A kind of module disengaging type semitrailer of covariant
Technical field
The present invention relates to semitrailer technical field more particularly to a kind of module disengaging type semitrailers of covariant.
Background technique
The heavy indivisible cargo of three ultra-large types of state key construction project;The countless classifications of heavy industry enterprise, hundred kinds
The engineering machinery of model;There are also the transport of the various cargos such as cargo needed for transhipment between water route, railway and people's life, semi-mounteds
Vehicle has advantageous advantage.
However, prior art semitrailer is unable to satisfy ideal wheelbase, the number of axle and loading needed for different kinds of roads and cargo
Face change in size.
Summary of the invention
" covariant " of semitrailer of the present invention refers to:At any time, there are ideal makeup section size, wheelspan, axis everywhere, with needing
Number.Purport provides a kind of module disengaging type semitrailer of intelligent, energy saving, multipotency idealization perfect combination, can solve existing
Semitrailer technology there are problems.
The present invention:It is to be changed to prior art integration semitrailer:Module connection is composed:" a kind of covariant module from
Box-like semitrailer ";This Fa Ming module is invented around core " covariant ", and function is all mutually indepedent between module, mutually
All can with need, at any time, everywhere, thoroughly separation and smoothly combination.Because of semitrailer of the present invention " covariant ", just reach:It is any
Goods is at will transported, the ideal type semitrailer that any road is at will sailed.
In order to achieve the above object, the technical proposal of the invention is realized in this way:
A kind of module disengaging type semitrailer of covariant of the present invention, specifically includes gooseneck modular device, loading surface modular device
With load-bearing modular device;
Wherein between the return flanging die block assembly, loading surface modular device and each modular device of load-bearing modular device mutually solely
Vertical, any combination connects as needed;
The gooseneck modular device specifically includes concave-convex connection gooseneck;
Wherein, the concave-convex connection gooseneck specifically includes gooseneck closing piece, gooseneck ontology, gooseneck groove and saddle, hydraulic
System and device, wherein:
The front of the gooseneck ontology is provided with gooseneck protruding shaft, and the two sides of tail of the gooseneck ontology is provided with loading
Face connector;It is additionally provided with connection lock pin in the horizontal direction on the loading surface connector;The gooseneck ontology passes through front
The gooseneck protruding shaft is embedded in be formed in the gooseneck groove and be rotatably assorted, and the loading surface that the gooseneck ontology also passes through tail portion connects
The loading surface modular device of interface and connection lock pin and vehicle body is cooperatively connected;
The bottom of the gooseneck groove is also fixedly connected with towing pin;The towing pin of the gooseneck bottom portion of groove and institute
It states the mounting hole on saddle and forms pin hole mating connection;
The gooseneck closing piece is fixedly connected on the gooseneck groove, and the gooseneck closing piece is for limiting the gooseneck sheet
The gooseneck protruding shaft of body front moving up and down on vertical direction in the gooseneck groove;
The gooseneck protruding shaft of the gooseneck body portion is specially semi-cylindrical protruding shaft;The gooseneck groove is specially to justify
Arc;And the cambered surface of the groove Internal periphery of the gooseneck groove and the protruding shaft outer profile of the gooseneck protruding shaft is adapted;
The gooseneck closing piece is specially two, is separately positioned on left and right two slot sides of the gooseneck groove;Each institute
It states gooseneck closing piece and specifically includes a closing piece and two lock screws through the closing piece;The bottom of the lock screw and institute
The connection of gooseneck groove is stated, the top of the lock screw is connect with the closing piece;And the inner sidewall of the closing piece is inner concave arc surface;
The protruding shaft cambered surface of the inner concave arc surface of the closing piece and the gooseneck protruding shaft is adapted;
The loading surface modular device include telescopic rectangular shape collar tie beam and transversely and horizontally be laid with and it is telescopic
More crossbeams, two main girders being vertically laid with and horizontal hydraulic pressure telescopic device and vertical hydraulic telescopic device, wherein:
The collar tie beam of the rectangular shape is divided into left part and right side in two sub-sections, two part of horizontal direction phases
Mutually socket forms telescopic collar tie beam;And the every crossbeam is two section crossbeams, two section crossbeam horizontal directions mutually are socketed to be formed
Telescopic crossbeam;Two main girders are arranged on the inside of the collar tie beam of rectangular shape, and are fixedly connected between two main girders;Two
The distance between root main girder immobilizes;The more crossbeams run through across two main girders;
The horizontal hydraulic pressure telescopic device is two, and one of horizontal hydraulic pressure telescopic device pushes the circle for driving
The left part horizontal cross of beam is moved back and forth along crossbeam extending direction;Another one horizontal hydraulic pressure telescopic device is for driving
The dynamic right part horizontal cross for pushing the collar tie beam is moved back and forth along crossbeam extending direction;
The vertical hydraulic telescopic device is two, and is separately positioned on the front end and rear end of main girder;It is described vertical
Hydraulic telescopic device pushes main girder to move back and forth along the vertical direction for driving;
The load-bearing modular device specifically includes left and right two curb girders and the central sill being arranged between two curb girders, hangs
Extension system and Wheels group arrangement and elevating mechanism;
Wherein, left and right two curb girders and central sill vertically setting arranged in parallel, and two curb girders, central sill and more
It is fixedly connected between root crossbeam;The middle Liangqi width is slightly larger than the width of two curb girders;And the elevating mechanism setting exists
Between the central sill and the suspension;
One of them suspension is fixedly connected on the bottom of the central sill, and the bottom of the suspension is fixed to be connected
It is connected to a Wheels group arrangement;The bottom of left and right two curb girders is also equipped with suspension, and each suspension is fixedly connected with
One Wheels group arrangement.
Particular content is:The gooseneck modular device:1, concave-convex connection gooseneck;2, double-pin connects gooseneck;
The loading surface modular device:1, notch board loading surface modular device;2, plate loading surface modular device;
The load-bearing modular device:1, center load carrier;2, three axis load carrier;3, uniaxial auxiliary load carrier;4,
Twin shaft assists load carrier;
It is packaged that the i.e. described gooseneck modular device specifically includes two kinds of return flanging dies that concave-convex connection gooseneck connects gooseneck with double-pin
It sets.The loading surface modular device specifically includes notch board loading surface modular device and plate loading surface modular device.The load-bearing
It is total that modular device specifically includes center load carrier, three axis load carriers, uniaxial auxiliary load carrier, twin shaft auxiliary load carrier
Four kinds of load-bearing modular devices.
It should be noted that modules device of the invention, function are all mutually indepedent, between modules device mutually
Can at any time, everywhere, with needing, be completely separated and steadily combine.To which the intermodule of invention can be mutually careless with needing whenever and wherever possible
Connection, is combined into the module disengaging type semitrailer of " covariant ".Core " covariant " purpose of the present invention is:One covariant semitrailer can
Any goods is at will transported, and any road is at will sailed.
Connection description between above-mentioned modules device:
Gooseneck modular device:The gooseneck protruding shaft on top is put into gooseneck groove, is gone up and down card slot and is connected;Loading surface module dress
It sets:The rearward end of the one meter of insertion gooseneck in front end, then lock pin is plugged and is connected;Load-bearing modular device:Upper end card slot is by loading
It sets lower end and is caught in and plug lock pin and connect.By being interconnected to upper module as this invention:A kind of covariant module disengaging type
Semitrailer.
Related gooseneck modular device is divided into:Bumps connection gooseneck connects gooseneck with double-pin, can lead to lower end and select different height
It spends position and connects loading surface with lock pin, vehicle height can be improved, improve the passability of concave-convex bumpy road.
The advantages of this semitrailer gooseneck modular device bumps connect:
1 > gooseneck protruding shaft and the connection structure that is rotatably assorted of gooseneck groove are the connection methods of indirect hardness;It can be to heavy duty
Swinging for traveling convex-concave road plays rotating oscillation damping protective effect to crossbeam and bindiny mechanism, reduces driver's cabin vibration, mentions
High driver comfort.
2 > have the function of shockproof, anti-skidding and anti-rollover;
It is shockproof:Mode is matched in the clamping of gooseneck protruding shaft and gooseneck groove, headstock can be made not influenced by tail swing;
It is anti-skidding:Banked bend driving wheel uniform force and it is non-slip;
It is anti-to turn over:Semi-trailer tail, which collapses rollover, does not influence drawing head;
3 > can extend headstock, vehicle body service life and improve stable structure reliability.
The advantages of this semitrailer gooseneck modular device double-pin connects:
Two towing pins, referred to as double-pin interconnection technique have been welded using the bottom front in gooseneck ontology, can choose
Property the first towing pin of selection or second traction pin connection;
By converting towing pin position, each axle load of reasonable distribution and regulating wheel distance are short, and oil consumption and increase is effectively reduced
Traveling-capability in elbow;
It is heavier before cargo, the first traction pin connection tractor saddle of selection;It is relatively light before cargo, with second
Draw pin connection tractor saddle
It is divided into plate loading surface modular device and notch board loading surface modular device, stringer section in relation to loading surface modular device
For box type crossbeam, there is the features such as rigidity is high, and intensity is high.It mainly has the following advantages that:
1 > adjusts loading surface size according to cargo requirement and (and then realizes with loading surface ruler needed for needing covariant cargo
It is very little), meet the carriage requirement of all kinds of various special cargo length, width and height low dimensionals.
2 > it change by the adjusting that horizontal hydraulic pressure telescopic device can implement width to loading surface (i.e. working face);
3 > are inserted directly into another packaged section tail end by front end mutually available between multiple loading surface modular devices and connect
Mouth is connected with lock pin, and the adjusting that can implement length to loading surface changes.
4 > select different height position to connect the tune that loading surface (i.e. working face) implements height with lock pin by gooseneck lower end
Section variation.
5 > can carry out raising and reducing loading surface by vertical hydraulic telescopic device, it is possible to implement tractor and each mould
Connection clutch between block.
Related load-bearing modular device is divided into:1. center load carrier, 2. 3 axis load carriers, 3. uniaxial auxiliary load-bearing dresses
It sets, 4. twin shafts auxiliary load carrier.
The advantages of load carrier of the present invention:
1 > its due to load-bearing modular device be carry wheel group by loading surface modular device bottom end protrusion be partially submerged into load-bearing
In the groove of module upper end, it is connected and fixed because loading surface module lug point has lockpin hole that insertion may be selected at interval of one meter, this
Sample is also achieved that the effect (i.e. wheelbase length is adjustable) that any wheelbase is adjusted
2 center > load carrier structures and advantage:
Holding for semitrailer is carried out using being integrated to combine with air suspension from the rigidity or single-point having not been used
Refitting is set, and wherein rigidity or single-point suspension are located at lift load-bearing at semitrailer rear end center, separately in semi-mounted vehicle tail end in rigid
Property single-point suspension after the right and left be the load-bearing of air suspension single axle.The advantages of this spline structure is:
Using the structure of center stressed load-bearing, it is more adaptive to:The traveling of the relatively narrow road of inferior grade in counties and townships, in meeting and
When bend, 8 tires load-bearing of center reduces the receiving weight of two sides roadbed, to protect road, reduce vehicle crew
Security risk, more ensure that the carrying reliability of semitrailer;
Using being the purpose of lift load-bearing at center:Eight tires of empty wagons center load-bearing rise, by the list of air suspension
The work of four tires of axis, plays effect of energy;It is put down when loaded vehicle as the totally 12 tires load-bearing of three axis of vehicle, thus more
What is added is suitable for the different cargo of more weight
3 >, tri- axis load carrier structure and advantage
Suitable for the long-term high-grade above expressway.Vehicle bridge is hung using three axis hoisting type of semitrailer, empty wagons is automatically single
Controllable costs are controlled and are maximized by axis work load-bearing, the mode of three bearing of loaded vehicle weight,
4 > single shafts and twin shaft assist load carrier advantage
The tail portion connector of the front top and the loading surface modular device that assist load carrier, which can be inserted directly into, to be passed through
Lock pin is connected and fixed.It can realize one group of load carrier that the module disengaging type semitrailer combined originally has existed for, then
In conjunction with the auxiliary load carrier being connected and fixed below, it can realize and increase bearing capacity and load-bearing capacity, increase the number of axle
Technical effect;Such method can realize that uniaxial two axis, single shaft become three axis, and twin shaft becomes the technology that four axis etc. the number of axle arbitrarily adds
Effect.
The specific structure construction of modules device is described in detail below;
Further;The gooseneck modular device is specifically divided into concave-convex connection gooseneck and connects two kinds of forms of gooseneck with double-pin.
The concave-convex connection gooseneck specifically includes gooseneck closing piece 101, gooseneck ontology 102, gooseneck groove 103 and saddle
104, hydraulic system 105, wherein:
The front of the gooseneck ontology 102 is provided with gooseneck protruding shaft 106, and the two sides of tail of the gooseneck ontology 102 is equal
It is provided with loading surface connector 107;Connection lock pin 108 is additionally provided on the loading surface connector 107 in the horizontal direction;It is described
Gooseneck ontology 102 is embedded in be formed in the gooseneck groove 103 by the gooseneck protruding shaft 106 of front and is rotatably assorted, described
Gooseneck ontology 102 also passes through the loading surface connector 107 of tail portion and the loading surface modular device of connection lock pin 108 and vehicle body
200 are cooperatively connected;
The bottom of the gooseneck groove 103 is also fixedly connected with towing pin 109;103 bottom of gooseneck groove it is described
Mounting hole on towing pin 109 and the saddle 104 forms pin hole and is cooperatively connected;
The gooseneck closing piece 101 is fixedly connected on the gooseneck groove 103, and the gooseneck closing piece 101 is for limiting
The gooseneck protruding shaft 106 of 102 front of gooseneck ontology moving up and down on vertical direction in the gooseneck groove 103.
Further;Double-pin connects gooseneck:
The double-pin connection gooseneck includes the first towing pin and the second traction for being fixedly connected on gooseneck body bottom portion front end
Pin;
Double-pin connects gooseneck technical effect explanation:Since double-pin connection gooseneck is the bottom front setting two in gooseneck ontology
A towing pin (i.e. preceding first towing pin and posterior second towing pin), the property of can choose is by the first towing pin or
Two towing pins are connect with saddle;By conversion towing pin position, 1 meter of wheelspan length of each axle load of reasonable distribution and adjusting, effectively
It reduces oil consumption and increases traveling-capability in elbow;It is heavier before cargo, with the first towing pin;It is relatively light before cargo, using second
Towing pin realizes connection;In addition to this, double-pin connection gooseneck (claims the concave-convex goose connecting with the gooseneck of clamping engagement before
Neck) other specific structures are identical.
Further, the loading surface modular device is divided into notch board loading surface modular device and plate loading surface modular device
Two kinds of forms;
The loading surface modular device include telescopic rectangular shape collar tie beam 201 and transversely and horizontally be laid with and it is scalable
202, two main girders being vertically laid with 203 of more crossbeams and the flexible dress of horizontal hydraulic pressure telescopic device 204 and vertical hydraulic
205 are set, wherein:
The collar tie beam 201 of the rectangular shape divides for left part and right side in two sub-sections, two part of horizontal sides
Telescopic collar tie beam is formed to mutual socket;And the every crossbeam 202 is two section crossbeams, two section crossbeam horizontal directions mutually cover
It connects to form telescopic crossbeam;Two main girders 203 are arranged at 201 inside of collar tie beam of rectangular shape, and two main girders 203
Between be fixedly connected;The distance between two main girders 203 immobilize;The more crossbeams 202 run through main big across two
Beam 203;
The horizontal hydraulic pressure telescopic device 204 is two, and one of horizontal hydraulic pressure telescopic device pushes institute for driving
The left part horizontal cross for stating collar tie beam 201 is moved back and forth along 202 extending direction of crossbeam;Another one horizontal hydraulic pressure is flexible
Device pushes the right part horizontal cross of the collar tie beam 201 to move back and forth along 202 extending direction of crossbeam for driving;
The vertical hydraulic telescopic device 205 is two, and is separately positioned on the front end and rear end of main girder 203;Institute
State vertical hydraulic telescopic device 205 for drive promotion main girder 203 move back and forth along the vertical direction.
Further, the load-bearing modular device is broadly divided into center load carrier, three axis load carriers, uniaxial auxiliary and holds
Refitting sets, the structure type of twin shaft auxiliary load carrier totally four kinds of load-bearing modular devices.
The load-bearing modular device (i.e. load-bearing modular device 300) specifically includes left and right two curb girders 301 and setting exists
Central sill 302, suspension 303 and Wheels group arrangement 304 and elevating mechanism between two curb girders 301;
Connection relationship, positional relationship and specific configuration and topology layout between above-mentioned load carrier structure is as follows:
Wherein, left and right two curb girders 301 and the vertically setting arranged in parallel of central sill 302, and two curb girders 301, in
It is fixedly connected between beam 302 and more crossbeams 305;Described its width of central sill 302 is slightly larger than the width of two curb girders 301;
And the elevating mechanism is arranged between the central sill and the suspension;
One of them suspension 303 is fixedly connected on the bottom of the central sill 302, the suspension 303
Bottom is fixedly connected with a Wheels group arrangement 304;The bottom of left and right two curb girders 301 is also equipped with suspension 303, and every
A suspension 303 is fixedly connected with a Wheels group arrangement 304 (above-mentioned to generally refer to center load carrier).
It should be noted that elevating mechanism is for empty wagons when driving by single-point suspension or rigid suspended promotion, reduction tire
Abrasion;Elevating mechanism be also used to heavy duty when driving by single-point suspension or it is rigid suspended fall, play the role of support load-bearing traveling.
Compared with prior art, this have the advantage that:
A kind of module disengaging type semitrailer of covariant provided by the invention, can solve following problems:
" covariant " of semitrailer of the present invention refers to:At any time, there are Utopian loading surface size, wheelspan, axis everywhere, with needing
Number.Purport provides a kind of module disengaging type semitrailer of intelligent, energy saving, multipotency idealization perfect combination.
Module disengaging type semitrailer of the present invention, all modules are invented, function between module around core " covariant "
Can be all mutually indepedent, it mutually all can be with needing, at any time, everywhere, thoroughly separation and smoothly combine.
To which composition " covariant " module disengaging type semi-mounted mutually can be connected with need whenever and wherever possible between module of the invention
Vehicle.Because of semitrailer of the present invention " covariant ", just reach:Any goods is at will transported, the ideal type semitrailer that any road is at will sailed.
Detailed description of the invention
Fig. 1 is the whole assembling schematic diagram of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention;
Fig. 2 is the decomposition of the gooseneck modular device in the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
Figure;
The partial structurtes of gooseneck modular device in the module disengaging type semitrailer of Fig. 3 covariant provided in an embodiment of the present invention
With the assembling structure schematic diagram of semitrailer;
Fig. 4 is the gooseneck in the gooseneck modular device in the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
Body part figure;
Fig. 5 is the gooseneck in the gooseneck modular device in the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
This body-side view;
Fig. 6 is the whole assembly of the module disengaging type semitrailer of the covariant in the embodiment of the present invention with gooseneck modular device
Figure;
Fig. 7 is at the closing piece in the gooseneck modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
In opening working state schematic representation;
Fig. 8 is at the closing piece in the gooseneck modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
In opening locking state schematic diagram;
Fig. 9 is that the double-pin of the module disengaging type semitrailer of covariant in the embodiment of the present invention connects the assembling structure signal of gooseneck
Figure;
Figure 10 is the plate in the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
The structural schematic diagram of loading surface modular device;
Figure 11 is the notch board in the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
The structural schematic diagram of loading surface modular device;
Figure 12 is the width tune of the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
Save schematic diagram;
Figure 13 is the length tune of the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
One status architecture schematic diagram when section;
Figure 14 is the length tune of the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
Another status architecture schematic diagram when section;
Figure 15 is the loading surface modular device height adjustment in the embodiment of the present invention in the module disengaging type semitrailer of covariant
When one state structural schematic diagram;
Figure 16 is the height tune of the loading surface modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
Another status architecture schematic diagram when section;
Figure 17 is that the center in the load-bearing modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant is held
Reset the structural schematic diagram set;
Figure 18 is three bearings in the load-bearing modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant
Reset the structural schematic diagram set;
Figure 19 is that the single shaft in the load-bearing modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant is auxiliary
Help the structural schematic diagram of load carrier;
Figure 20 is that the twin shaft in the load-bearing modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant is auxiliary
Help the structural schematic diagram of load carrier;
Figure 21 is that the single shaft in the load-bearing modular device in the embodiment of the present invention in the module disengaging type semitrailer of covariant is auxiliary
Help the integral installation distribution structure schematic diagram of load carrier Yu loading surface modular device;
Description of symbols:
Gooseneck modular device 100;Gooseneck closing piece 101, gooseneck ontology 102, gooseneck groove 103;Saddle 104;Hydraulic system
Device 105;Gooseneck protruding shaft 106;Loading surface connector 107;Connect lock pin 108;Towing pin 109;Closing piece 110;Lock screw
111;First towing pin 112;Second towing pin 113;
Loading surface modular device 200;Collar tie beam 201;Crossbeam 202;Main girder 203;Horizontal hydraulic pressure telescopic device 204;Vertically
Hydraulic telescopic device 205;Tail portion connecting hole 206;Regulating wheel is away from lockpin hole 207;
Load-bearing modular device 300;Curb girder 301;Central sill 302;Suspension 303;Wheels group arrangement 304;Crossbeam 305;It is uniaxial
Assist load carrier 306;Twin shaft assists load carrier 307.
Specific embodiment
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of module disengaging type semitrailer of covariant provided in an embodiment of the present invention, tool includes that return flanging die is packaged
Set 100, loading surface modular device 200 and load-bearing modular device 300,;
Wherein its each module of the return flanging die block assembly 100, loading surface modular device 200 and load-bearing modular device 300 it
Between can be mutually indepedent, as needed any combination connection and separation;
It is packaged that the i.e. described gooseneck modular device specifically includes two kinds of return flanging dies that concave-convex connection gooseneck connects gooseneck with double-pin
It sets.The loading surface modular device specifically includes notch board loading surface modular device and plate loading surface modular device.The load-bearing
It is total that modular device specifically includes center load carrier, three axis load carriers, uniaxial auxiliary load carrier, twin shaft auxiliary load carrier
Four kinds of load-bearing modular devices.
It should be noted that module of the invention, function are all mutually indepedent, between module mutually can at any time, everywhere, with
It needs, be completely separated and steadily combine.To the intermodule of invention can be combined into mutually whenever and wherever possible with careless connection is needed " with
The module disengaging type semitrailer of change ".Invention core " covariant " purpose:One covariant semitrailer can any goods at will transport, Ren Helu
At will sail.
The specific structure of modules device is done below and is described in detail:
Further;The gooseneck modular device specifically includes 1. concave-convex connection goosenecks;2. double-pin connects gooseneck;
As shown in Fig. 2-Fig. 9, it is recessed that the concave-convex connection gooseneck specifically includes gooseneck closing piece 101, gooseneck ontology 102, gooseneck
Slot 103 and saddle 104, hydraulic system 105, wherein:
The front of the gooseneck ontology 102 is provided with gooseneck protruding shaft 106, and the two sides of tail of the gooseneck ontology 102 is equal
It is provided with loading surface connector 107;Connection lock pin 108 is additionally provided on the loading surface connector 107 in the horizontal direction;It is described
Gooseneck ontology 102 is embedded in be formed in the gooseneck groove 103 by the gooseneck protruding shaft 106 of front and is rotatably assorted, described
Gooseneck ontology 102 also passes through the loading surface connector 107 of tail portion and the loading surface modular device of connection lock pin 108 and vehicle body
200 are cooperatively connected;
The bottom of the gooseneck groove 103 is also fixedly connected with towing pin 109;103 bottom of gooseneck groove it is described
Mounting hole on towing pin 109 and the saddle 104 forms pin hole and is cooperatively connected;
The gooseneck closing piece 101 is fixedly connected on the gooseneck groove 103, and the gooseneck closing piece 101 is for limiting
The gooseneck protruding shaft 106 of 102 front of gooseneck ontology moving up and down on vertical direction in the gooseneck groove 103.
It should be noted that gooseneck modular device 100, mainly by gooseneck closing piece 101, gooseneck ontology 102 (including front
Gooseneck protruding shaft 106 and the loading surface connector 107 of tail end etc.), gooseneck groove 103 and saddle 104, hydraulic system
The structure compositions such as 105:
The vehicle body of gooseneck protruding shaft 106 (and gooseneck ontology) the connection semitrailer of this semi-cylindrical, while the semicircle
The gooseneck groove 103 of groove shapes is then achieved a fixed connection by towing pin 109 with the saddle 104 on headstock;So, when
It, can be so that vehicle body be realized connection with headstock and is separated after gooseneck protruding shaft 106 is embedded into the formation mating connection of gooseneck groove 103;
After the clamping of gooseneck protruding shaft 106 of vehicle body (loading surface modular device) connection is embedded in gooseneck groove 103, due to vehicle body itself
The effect of gravity is connected to gooseneck protruding shaft steadily in gooseneck groove, both make will not to separate (while vehicle body and headstock can be made
Connection);In addition, after gooseneck protruding shaft 106 is detached from gooseneck groove 103, it both can make to realize that separation (while can make vehicle body and vehicle
Head separation).So, novel gooseneck device also has the function of convenient for disassembly and assembly.
Above-mentioned gooseneck ontology 102, which is embedded in be formed in the gooseneck groove 103 by the gooseneck protruding shaft 106 of front, to be turned
Dynamic cooperation, above-mentioned gooseneck ontology 102 pass through the loading surface connector 107 of tail portion and the loading surface of connection lock pin 108 and vehicle body
Modular device 200 is cooperatively connected;When semitrailer is travelled to bumpy road, vehicle body and loading surface modular device etc. can run
It winnows with a dustpan vibration, causes vehicle body double swerve;It will be apparent that the rigid connection (i.e. hardness transmission) of traditional semitrailer will will lead to semitrailer
Body vibrations pass to tractor headstock, and it is very big to drive influence to driver safety;
Even if but gooseneck device vehicle body of the invention shakes, and only can cause gooseneck protruding shaft a certain amount of turn in gooseneck groove
It is dynamic, since the embodiment of the present invention is using be rotatably assorted connection structure and non-direct contact rigid connection method;So gooseneck is convex
The connection type of axis and gooseneck groove can play a protective role to heavy duty traveling convex-concave road to vehicle crossbeam;Behind vehicle body
Rubber-tyred roller vibration occur when pressing through rough road surface jolt, the vehicle head part in front, Bu Huiyin will not be transferred to substantially
Headstock vibration is played, provides good driving environment to driver.Keep headstock inner part more stable simultaneously, can enhance in headstock
The service life of component improves the stability of vehicle.Above-mentioned concave-convex connection gooseneck advantage explanation:It is shockproof:Gooseneck protruding shaft and gooseneck
The clamping of groove can be such that headstock is not influenced by tail swing with mode (i.e. concave-convex connection type);It is anti-skidding:Banked bend driving wheel
Uniform force and it is non-slip;Anti-rollover:Collapsing semitrailer rollover in tail portion does not influence tractor;
Further, in the specific structure of gooseneck ontology:
The gooseneck protruding shaft 106 of 102 front of gooseneck ontology is specially semi-cylindrical protruding shaft;The gooseneck groove
103 is specially arc-shaped;And the protruding shaft outer profile of the groove Internal periphery of the gooseneck groove 103 and the gooseneck protruding shaft 106
Cambered surface is adapted, and can make 106 tight clamping fit of gooseneck protruding shaft in the gooseneck groove 103 in this way.
It should be noted that gooseneck modular device:Gooseneck groove with lifting device can be firmly fixed for bottom
On the big fine strain of millet location of saddle support of tractor;Gooseneck protruding shaft:It is recessed that the gooseneck protruding shaft of gooseneck ontology front end can be stably embedded in gooseneck
In slot.Can just be formed it will be apparent that above-mentioned gooseneck protruding shaft and gooseneck groove part have special shape design, between them can
The clamping engagement of rotation;That is the gooseneck protruding shaft of gooseneck body portion is specially semi-cylindrical protruding shaft;Gooseneck groove is specially circular arc
Shape;Both and the cambered surface of the groove Internal periphery of gooseneck groove and the protruding shaft outer profile of gooseneck protruding shaft is adapted, just can guarantee in this way
Between form closely firm cooperation, while can be rotated that (i.e. semicircle cambered surface contacts with each other, and rotation can be made more flat in right amount
Surely, mitigate), play the role of rotating oscillation damping.
Further, in the specific structure of gooseneck closing piece:
The gooseneck closing piece 101 is specially two, is separately positioned on left and right two slot sides of the gooseneck groove 103;
Each gooseneck closing piece 101 specifically includes a closing piece 110 and two lock screws 111 through the closing piece;The lock
The bottom of tight screw 111 is connect with the gooseneck groove 103, and the top of the lock screw 111 is connect with the closing piece 110;
And the inner sidewall of the closing piece 110 is inner concave arc surface;The protruding shaft of the inner concave arc surface of the closing piece 110 and the gooseneck protruding shaft 106
Cambered surface is adapted.
It can be solved about gooseneck modular device:1, headstock rollover event there is no;2, banked bend skids into history;3, it mentions
High integeral vehicle life, comfortable safety;4, headstock trailer simple one second with regard to clutch;5, it can just convert with cargo up to efficient.
It is existing in status:1, it is collapsed at semitrailer tail wheel together with headstock rollover roadside lowland;2, banked bend center of gravity is different,
Unbalance stress causes driving wheel vacantly to skid;3, convex-concave Lu Zhengong swing causes traction crossbeam connection to disconnect, and influences integeral vehicle life.
Increase driver fatigue, increases security risk;4, drawing head and trailer Detaching and Lapping, perishable, time-consuming, complicated, low efficiency;5, work
Make face and is not adjustable height cause source of goods loss;
Defect caused by status and deficiency have:1, it newly changes driver or road conditions is unfamiliar with, into bend or and opposed vehicle
When meeting, loaded goods weight is not reciprocity with road quality classification, causes to collapse at semitrailer tail wheel public together with headstock driver rollover
Roadside recess causes life security accident potential.2, driving wheel banked bend, the different unbalance stress of center of gravity and hanging stagnation of movement is dangerous
Bend.Usually at one hour ten minutes, even longer time, driver just solved to pass through.It leaves security risk and increases various
Direct invisible cost expenditure.3, function is shaken in twisting when convex-concave road, and the junctions such as the big fine strain of millet of tractor, saddle is caused to loosen fracture.
It shakes function shake and increases tired driver initiation accident potential.4, tractor saddle is led in the fracture of crack lock pin and some minor issues
It causes to wait when needed and because step is more, excessively complicates, headstock cannot be separated and be engaged with semitrailer.Also because of the saddle service life 2 years
Increased costs are caused in left and right etc., allow operator's low efficiency.
Further;Double-pin connects gooseneck:
The double-pin connection gooseneck includes the first towing pin and the second traction for being fixedly connected on gooseneck body bottom portion front end
Pin;
Double-pin connects gooseneck technical effect explanation:Since double-pin connection gooseneck is the bottom front setting two in gooseneck ontology
A towing pin (i.e. preceding first towing pin and posterior second towing pin), the property of can choose is by the first towing pin or
Two towing pins are connect with saddle;By conversion towing pin position, 1 meter of wheelspan length of each axle load of reasonable distribution and adjusting, effectively
It reduces oil consumption and increases traveling-capability in elbow;It is heavier before cargo, with the first towing pin;It is relatively light before cargo, using second
Towing pin realizes connection;In addition to this, double-pin connection gooseneck (claims the concave-convex goose connecting with the gooseneck of clamping engagement before
Neck) other specific structures are identical.
Further, the loading surface modular device is specifically divided into notch board loading surface modular device and plate loading surface module
Two kinds of forms of device;
As shown in Figure 10-Figure 16, the loading surface modular device includes the collar tie beam 201 and cross of telescopic rectangular shape
To level laying and 202, two main girders being vertically laid with 203 of telescopic more crossbeams and horizontal hydraulic pressure telescopic device
204 and vertical hydraulic telescopic device 205, wherein:
The collar tie beam 201 of the rectangular shape divides for left part and right side in two sub-sections, two part of horizontal sides
Telescopic collar tie beam is formed to mutual socket;And the every crossbeam 202 is two section crossbeams, two section crossbeam horizontal directions mutually cover
It connects to form telescopic crossbeam;Two main girders 203 are arranged at 201 inside of collar tie beam of rectangular shape, and two main girders 203
Between be fixedly connected;The distance between two main girders 203 immobilize;The more crossbeams 202 run through main big across two
Beam 203;
The horizontal hydraulic pressure telescopic device 204 is two, and one of horizontal hydraulic pressure telescopic device pushes institute for driving
The left part horizontal cross for stating collar tie beam 201 is moved back and forth along 202 extending direction of crossbeam;Another one horizontal hydraulic pressure is flexible
Device pushes the right part horizontal cross of the collar tie beam 201 to move back and forth along 202 extending direction of crossbeam for driving;
The vertical hydraulic telescopic device 205 is two, and is separately positioned on the front end and rear end of collar tie beam 201;It is described
Vertical hydraulic telescopic device 205 pushes collar tie beam 201 to move back and forth along the vertical direction for driving.
It should be noted that above-mentioned vertical hydraulic telescopic device 205 will realize the technical effect of following aspect:1, it is convenient for
With the first second clutch of tractor;2, clutch is mutually converted between each module;3, handling goods and rapair and maintenance.
It should be noted that a kind of loading surface module of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
Device is mainly big by the collar tie beam 201 of telescopic rectangular shape and 202, two masters being vertically laid with of telescopic more crossbeams
Beam 203 and the structure compositions such as horizontal hydraulic pressure telescopic device 204 and vertical hydraulic telescopic device 205;Before loading surface modular device
The lower end tail portion of end insertion gooseneck device, is connect by latch gear connection (i.e. pin connection) with gooseneck, and then realize after insertion
Pulled and dragged traveling;
Wherein, the collar tie beam 201 of the rectangular shape divides for left part and right side in two sub-sections, two part water
Square telescopic collar tie beam 201 is formed to mutual socket;And the every crossbeam 202 is two section crossbeams, two section crossbeam level sides
Telescopic crossbeam is formed to mutual socket;Two main girders 203 are arranged on the inside of rectangle collar tie beam, and between two main girders
It is fixedly connected;The distance between two main girders immobilize;The more crossbeams run through across two main girders;
Meanwhile the horizontal hydraulic pressure telescopic device 204 is two, one of horizontal hydraulic pressure telescopic device is pushed away for driving
The left part horizontal cross for moving the collar tie beam is moved back and forth along crossbeam extending direction;The flexible dress of another one horizontal hydraulic pressure
It sets and pushes the right part horizontal cross of the collar tie beam to move back and forth along crossbeam extending direction for driving;So, two
A horizontal hydraulic pressure telescopic device can respectively rely on main girder, laterally urge the left part and right part of collar tie beam respectively
Transversal stretching is realized, in this telescopic process;The distance between two main girders immobilize, but collar tie beam is scalable,
Rectangle collar tie beam is formed by loading surface (i.e. working face) and will be with becoming larger or become smaller, and then realizes loading surface (i.e. working face)
The variation of width.
It should be noted simultaneously that gooseneck ontology is provided with multiple loading surface connectors on the different height position of tail portion
(not shown);Loading surface modular device can be connected to different gooseneck ontology different height positions by latch gear simultaneously
It sets, and then realizes the height adjustment of loading surface.Meanwhile the vertical hydraulic telescopic device 205 is two, and is separately positioned on
The front end and rear end of collar tie beam;The vertical hydraulic telescopic device pushes collar tie beam to move back and forth along the vertical direction for driving.It is logical
Loading surface (i.e. working face) can be gone up and down by crossing above-mentioned vertical hydraulic telescopic device, be beneficial to the handling of cargo in this way
Operation.
Meanwhile it being formed and being detachably connected between the main girder 203 of adjacent any two sections loading surface modular device;It is i.e. each
In loading surface modular device structure, the tail portion of each main girder 203 is additionally provided with tail portion connecting hole 206;Adjacent later section master
The front end of crossbeam 203 can be inserted into the tail portion connecting hole of previous 203 tail portion of section main girder, and (be sold by latch gear
Shaft lock device) it is attached, it can so drive deutomerite main girder to be formed on previous section main girder flexible, and
Lock pin connection is carried out after determining position;The length of loading surface (i.e. working face) can be adjusted by above structure.
Further, the load-bearing modular device is broadly divided into center load carrier, three axis load carriers, uniaxial auxiliary and holds
Refitting is set, twin shaft assists load carrier totally four kinds of load-bearing modular devices.As shown in Figure 17-Figure 21, the load-bearing modular device
The central sill that (i.e. load-bearing modular device 300) specifically includes left and right two curb girders 301 and be arranged between two curb girders 301
302, suspension 303 and Wheels group arrangement 304 and elevating mechanism;
Connection relationship, positional relationship and specific configuration and topology layout between above-mentioned load carrier structure is as follows:
Wherein, left and right two curb girders 301 and the vertically setting arranged in parallel of central sill 302, and two curb girders 301, in
It is fixedly connected between beam 302 and more crossbeams 305;Described its width of central sill 302 is slightly larger than the width of two curb girders 301;
And the elevating mechanism is arranged between the central sill and the suspension;
One of them suspension 303 is fixedly connected on the bottom of the central sill 302, the suspension 303
Bottom is fixedly connected with a Wheels group arrangement 304;The bottom of left and right two curb girders 301 is also equipped with suspension 303, and every
A suspension 303 is fixedly connected with a Wheels group arrangement 304.
It should be noted that elevating mechanism is for empty wagons when driving by single-point suspension or rigid suspended promotion, reduction tire
Abrasion;Elevating mechanism be also used to heavy duty when driving by single-point suspension or it is rigid suspended fall, play the role of support load-bearing traveling.
Vehicle body is its main components, and the spandrel girder of vehicle body primarily serves load-bearing effect.Spandrel girder is broadly divided into three parts,
Respectively left side curb girder, right side sills and central sill.Central sill is located at middle part, and width is slightly larger than the width of curb girder.Central sill passes through
Elevating mechanism is connected with vehicle body, can be lifted or be declined when in use.Meanwhile each suspension is connected with wheel assembling
Set, the suspension that the utility model uses for air suspension combine it is rigid suspended, can guarantee in this way load-bearing modular device have
There are more preferable more stable bearing capacity and load-bearing capacity.Gooseneck is the common component of existing semitrailer, and gooseneck is arranged in vehicle body
Front end is for connecting vehicle body and headstock (repeating no more to this).
In traditional semi-mounted bassinet structure, Wheels group arrangement is respectively positioned on the curb girder of the two sides of vehicle body, substantially wide with vehicle body.
During turn, the Wheels group arrangement of vehicle body is easy to be pressed onto the roadbed of corner the semitrailer of this structure, by roadbed pressure
Collapse, damages road surface;Adverse effect is brought to itself and society.In addition, the section more narrow on some road surfaces, semitrailer by
It is wider in itself, thus cannot by or be difficult to pass through.Again, the middle section load-bearing capacity of most roads is than two sides
Load-bearing capacity is strong, and wider semitrailer is often pressed onto road surface or the roadbed of two sides in motion, and crush road surface or roadbed, gives society
Loss can be brought.
Using the above-mentioned improved semitrailer of the utility model, its part Wheels group arrangement is because be located in central sill in motion
On, so its intermediate traveling that can be located at road surface with guarantee section Wheels group arrangement;The sky being unused simultaneously using the whole nation
The gas rigid suspended and single-point suspension that is suspended carries out load-bearing connection, the two sides of rolling road surface when can further reduce turn
The strength of roadbed, and then can also be travelled on relatively narrow road surface, also more difficult crush road surface and roadbed, facilitate itself
Traveling, will not destroy road.Since it is central sill load-bearing when transporting excavator, so even being wheel group inwardly close to also not
It will affect its stability.
Further, as shown in figure 19, the module disengaging type semitrailer of the covariant further includes uniaxial auxiliary load carrier
306;The uniaxial auxiliary load carrier 306 is detachably connected on the tail portion of loading surface modular device 200.
As shown in figure 20, the module disengaging type semitrailer of the covariant further includes that (it is twin shaft auxiliary load carrier 307
A number of axle has been had more than single shaft auxiliary load carrier);The twin shaft auxiliary load carrier 307 is detachably connected on loading face mould
The tail portion of block assembly 200.
In conclusion a kind of module disengaging type semitrailer of covariant provided by the invention, at least has following technological merit:
1, it is a kind of semi-mounted that can overturn traditional concept completely that the present invention, which provides a kind of covariant module disengaging type semitrailer,
Vehicle, it is desirable to provide it is a kind of at any time with need ideal length and width height loading surface, major and minor axis away from and the number of axle a kind of lightweight, simple
Change, the modular semitrailer of the ideal type of idealization perfect combination, to solve all the problems above existing for existing semitrailer.
2, the explanation of covariant module disengaging type semitrailer of the present invention:
Around core " covariant ", module of the invention, function is all mutually indepedent, between module mutually all can with need, at any time,
Thoroughly separation, mutually all can be with needing, everywhere, smoothly combine.To the module of invention, can mutually connect with need whenever and wherever possible
Connect composition " covariant " module disengaging type semitrailer.Because can " covariant " ideal loading surface, wheelbase, the number of axle and load carrier can
Reach any goods at will to transport, the ideal type semitrailer that any road is at will sailed.
3, a kind of generally speaking, the module disengaging type semitrailer of covariant provided by the invention, structure construction is novel, innovative
It is extremely strong.The i.e. described gooseneck modular device specifically includes two kinds of gooseneck modular devices that concave-convex connection gooseneck connects gooseneck with double-pin.
The loading surface modular device specifically includes two kinds of loading surface modular devices of notch board and plate.The load-bearing modular device is specific
Load carrier totally four kinds of load-bearing modules are assisted including center load carrier, three axis load carriers, uniaxial auxiliary load carrier, twin shaft
Device.
4, related gooseneck modular device:The embodiment of the present invention uses gooseneck protruding shaft and connect with being rotatably assorted for gooseneck groove
Structure (i.e. concave-convex connection gooseneck) and non-direct contact rigid connection method;Vehicle can be played in heavy duty traveling convex-concave road suitable
Rotating oscillation damping effect is measured, provides good driving environment to driver.
5, the semitrailer of the embodiment of the present invention can concave-convex bumpy road passability.With shockproof, anti-skidding and anti-side
The effect turned over;It is shockproof:The clamping of gooseneck protruding shaft and gooseneck groove can make headstock not by tail portion with mode (i.e. concave-convex connection type)
Swinging influences;It is anti-skidding:Banked bend driving wheel uniform force and it is non-slip;Anti-rollover:Collapsing semitrailer rollover in tail portion does not influence
Tractor;
6, double-pin connection gooseneck in embodiments of the present invention, is additionally used:Since double-pin connection gooseneck is in gooseneck ontology
Bottom front be arranged two towing pins (i.e. preceding first towing pin and posterior second towing pin), the property of can choose will
The connection of the saddle of first towing pin or the second towing pin and tractor;By converting towing pin position, each axis of reasonable distribution
Load-carrying and regulating wheel distance are short, and oil consumption is effectively reduced and increases traveling-capability in elbow;It is heavier before cargo, with the first towing pin;
It is relatively light before cargo, it is realized and is connected using the second towing pin.
7, the semitrailer of the embodiment of the present invention can make headstock and body extention service life, and semitrailer vehicle can be improved
Structural stability and structural reliability.
8, the module disengaging type semitrailer of the covariant in the embodiment of the present invention, is designed on semitrailer;It can be adapted for
The transport of a variety of mechanical equipments, large cargo, highway construction equipment, big part tank body, equipment body and various steel.It is transported
Stationarity it is stronger, be suitable for all kinds of engineering machinery large scale equipments of delivery and steel etc..
9, related loading surface modular device:The loading surface of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention
Modular device is changed by the adjusting that horizontal hydraulic pressure telescopic device can implement width to loading surface (i.e. working face).
10, the loading surface modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention, by more
The flexible adjusting that can implement length to loading surface (i.e. working face) of grafting changes between a loading surface modular device.
11, the loading surface modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention, passes through goose
The adjusting that different height position latch gear can implement height to loading surface (i.e. working face) on neck ontology changes, i.e., to loading
Face (i.e. working face) carries out descending operation.
12, the loading surface modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention, by vertical
Hydraulic telescopic device can be gone up and down, and the purpose of empty wagons lifting is reached.
13, the loading surface modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention, Girth
There can be the features such as rigidity is high, and intensity is high using flat and gravure (i.e. two kinds of plate and notch board).Which ensure that fortune
Defeated stationarity is suitable for all kinds of engineering machinery large scale equipments of delivery and steel etc..
14, the loading surface modular device of the module disengaging type semitrailer of the covariant of the embodiment of the present invention is strong with structure
Reliable loading surface (working face) is spent, the structural stability and structural reliability of semitrailer vehicle can be improved.
15, the loading surface modular device of the module disengaging type semitrailer of covariant provided in an embodiment of the present invention, it is widely used,
Efficient quick, loading surface can be versatile and flexible, according to user require adjust loading end size (and then realize useful load and
The covariant of loading surface size), meet the transport requirement of various special size cargos.
16, related load-bearing modular device:Load-bearing modular device is broadly divided into center load carrier, three axis load carriers, list
Axis assists load carrier, twin shaft auxiliary load carrier totally four kinds of load-bearing modular devices.Covariant provided by the embodiment of the utility model
Module disengaging type semitrailer load-bearing modular device, part Wheels group arrangement because be located on central sill, can protect
The intermediate traveling that part Wheels group arrangement can be located at road surface is demonstrate,proved, using the structure of center stressed load-bearing, roadbed can be effectively protected.
Meanwhile when can further reduce turn the two sides roadbed of rolling road surface strength, and then can also can on relatively narrow road surface
Traveling, is also not easy crush road surface and roadbed, facilitates the traveling of itself, will not destroy road.
17, the load-bearing modular device of the module disengaging type semitrailer of covariant provided by the embodiment of the utility model, simultaneously
The air suspension rigid suspended progress load-bearing connection in conjunction with single-point suspension integral structure being unused using the whole nation, in this way may be used
To guarantee that load-bearing modular device has more preferable more stable bearing capacity and load-bearing capacity.
18, the load-bearing modular device of the module disengaging type semitrailer of covariant provided by the embodiment of the utility model, passes through
Elevating mechanism implements the adjusting variation of height, i.e., carries out descending operation to loading surface (i.e. working face).
19, the module disengaging type semitrailer of covariant provided by the embodiment of the utility model is additionally provided with uniaxial auxiliary and holds
Refitting is set or twin shaft auxiliary load carrier;By taking single shaft assists load carrier as an example:The head of the uniaxial auxiliary load carrier with
It is connected between the tail portion of the loading surface modular device by latch gear.Set on the tail portion frame of loading surface modular device
It is equipped with tail portion connecting hole, the beam that uniaxial auxiliary load carrier stretches out behind can be plugged into the connecting hole of tail portion, and pass through lock pin
Device is attached;Tail portion since the front-rear position of each tail portion connecting hole is different, in this way at selection different location
After connecting hole is fixedly connected, it can realize the loading surface modular device (its bottom is provided with load carrier) of front with after
Elongation and contraction between the uniaxial auxiliary load carrier in face;Simultaneously because front has existed for one group of load-bearing dress
It sets, in conjunction with subsequent individual load carrier, can realize the technology for further increasing bearing capacity and load carrier
Effect;One group of Wheels group arrangement is also increased simultaneously, and then realizes that two axis become the number of axle increase method of three axis.
20, the load-bearing modular device of the module disengaging type semitrailer of covariant provided by the embodiment of the utility model, due to
Load-bearing modular device can carry the selectable different length any position for being mounted on device surface bottom of device such as Wheels group arrangement
On, and then the wheel group for realizing loading surface bottom wheel group and tractor vehicle head part realizes that distance is adjustable;It also achieves simultaneously
Any wheelbase adjusts (i.e. wheelbase length is adjustable) and any number of axle selection.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;Its
It is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features
It is equivalently replaced;And these are modified or replaceed, various embodiments of the present invention skill that it does not separate the essence of the corresponding technical solution
The range of art scheme.