CN111874112A - Engineering equipment transportation semitrailer for building - Google Patents

Abstract

The invention discloses a construction engineering equipment transportation semitrailer, which comprises a shell, wherein a bottom plate rotates leftwards and rightwards symmetrically and vehicle shafts extending to the front side and the rear side, the vehicle shafts are fixedly provided with front-rear symmetrical wheels, the top end surface of the bottom plate is provided with a shaft sleeve cavity with an upward opening, a balance auxiliary mechanism is arranged in the bottom plate, the top end surface of the bottom plate is provided with a cargo box, the top end surface of the cargo box is provided with a placing cavity with an upward opening, the placing cavity is internally provided with a balance judging mechanism, the left end surface of the cargo box is fixedly provided with a connector, and the right end surface of the cargo box is fixedly provided; the invention realizes that the center of gravity of the engineering equipment of the device is automatically adjusted through the clamping block, so that the semi-trailer is kept balanced in the carrying process, the potential safety hazard of the semi-trailer in the transportation process is reduced, and meanwhile, the supporting block is started to support one side with the shifted center of gravity, so that the running safety of the vehicle is ensured.

Description

Engineering equipment transportation semitrailer for building

Technical Field

The invention relates to the related field of civil engineering, in particular to a transport semitrailer of construction engineering equipment.

Background

In the civil engineering process, a large amount of building materials and construction equipment are needed, and the transportation of the building materials and the construction equipment is mostly completed by using a semi-trailer.

At the present stage, the balance of the semitrailer for transporting building materials and equipment is completed by a suspension system without redundant auxiliary systems, so that when heavy objects are transported, the gravity center is seriously deviated and is difficult to reset, and the side turning of the semitrailer is easy to occur, thereby causing traffic accidents.

Disclosure of Invention

The invention aims to solve the technical problem of providing a construction engineering equipment transportation semitrailer, which utilizes a balance mechanism to assist a suspension system to balance a vehicle body, and solves the problem that the gravity center of the vehicle is difficult to automatically balance under the condition of gravity center deviation.

The invention relates to a construction engineering equipment transportation semitrailer, which comprises a bottom plate, wherein a vehicle shaft which is bilaterally symmetrical and extends to the front side and the rear side is rotated in the bottom plate, front-rear symmetrical wheels are fixedly arranged on the vehicle shaft, a shaft sleeve cavity with an upward opening is arranged on the end surface of the top of the bottom plate, a balance auxiliary mechanism is arranged in the bottom plate, a cargo box is arranged on the end surface of the top of the bottom plate, a placing cavity with an upward opening is arranged on the end surface of the top of the cargo box, a balance judging mechanism is arranged in the placing cavity, a connector is fixedly arranged on the end surface of the left side of the cargo box, a guide rail is fixedly arranged on the end surface of the right side of the cargo box, a threaded shaft sleeve with a front-rear symmetry is arranged in the shaft sleeve cavity in a sliding manner, a hinged cavity, the connecting groove is internally provided with a U-shaped connecting rod in a sliding manner, the connecting rod is fixedly provided with a lower fixed block, the upper fixed block is hinged with the lower fixed block through a first hinge rod, the inner wall of the rear side of the cavity of the shaft sleeve is fixedly provided with a motor, the end face of the front side of the motor is in power connection with a screw rod with opposite front and rear threads, the screw rod penetrates through the two threaded shaft sleeves and is meshed with the two threaded shaft sleeves, the end face of the bottom of the threaded shaft sleeve is provided with a bayonet with a downward opening, the top wall in the bayonet is fixedly provided with a rack, the bottom wall in the cavity of the shaft sleeve is provided with clamping block cavities with upward openings and symmetrical front and rear, the clamping block cavities are internally provided with first clamping blocks in a sliding manner, the end face of the bottom of the first clamping block is fixedly provided with an electromagnetic spring fixedly connected with the, a first gear cavity with an upward opening is formed in the end face of the top of the second clamping block, a first transmission shaft is rotatably arranged on the front inner wall and the rear inner wall of the first gear cavity, a first transmission gear meshed with the rack is fixedly arranged on the first transmission shaft, a second gear cavity with an upward opening is formed in the bottom wall of the first gear cavity, a second transmission shaft is rotatably arranged on the front inner wall and the rear inner wall of the second gear cavity, a second transmission gear meshed with the first transmission gear and a winding wheel positioned on the rear side of the second transmission gear are fixedly arranged on the second transmission shaft, a first pull rope is fixedly arranged on the winding wheel, a flywheel cavity is formed in the inner wall of the front side of the shaft sleeve cavity, a flywheel is fixedly arranged on the part of the screw rod extending into the flywheel cavity, a rotating shaft is rotatably arranged on the end face of the front side of the flywheel, and a piston cavity with a leftward opening is arranged on the, link up on the inner wall of piston chamber right side and be equipped with passageway and first through-hole, the passageway with all the fixed check valve that is equipped with in the first through-hole, the piston intracavity slides and is equipped with the piston, the fixed piston fixed block that is equipped with on the piston left side terminal surface, the piston fixed block with it is articulated through the second hinge bar between the axis of rotation.

Further, a pressure storage cavity is arranged on the inner bottom wall of the flywheel cavity, the inner wall of the rear side of the pressure storage cavity is communicated with the other end of the channel far away from the piston cavity, a first pipeline positioned on the lower side of the channel is fixedly communicated with the inner wall of the rear side of the pressure storage cavity, a pressure storage piston is arranged in the pressure storage cavity in a sliding manner, a pressure storage spring fixedly connected with the inner wall of the front side of the pressure storage cavity is fixedly arranged on the end face of the front side of the pressure storage piston, an exhaust hole communicated with the outside is arranged on the top wall in the pressure storage cavity in a penetrating manner, a valve block cavity is arranged on the inner wall of the rear side of the pressure storage cavity, a valve block is arranged in the valve block cavity in a sliding manner, a valve block port with an upward opening is arranged on the end face of the top of the valve block, the inner bottom wall of the valve block port is fixedly communicated with the other end of the first pipeline far away from the, the valve block is characterized in that the front end face and the rear end face of the valve block are fixedly connected with second pull ropes, the top wall in the cavity of the valve block is fixedly communicated with second pipelines which are symmetrical front and back, and the bottom wall in the cavity of the valve block is fixedly communicated with valve block cavity exhaust holes which are symmetrical front and back and communicated with the outside.

Further, the balance judging mechanism comprises a placing plate arranged in the placing cavity in a sliding manner, front and back symmetrical spring telescopic rods are fixedly arranged on the bottom end face of the placing plate, front and back symmetrical second through holes are arranged in the bottom wall of the placing cavity in an up-down through manner, the spring telescopic rods penetrate through the second through holes and are fixedly connected with the top end face of the bottom plate, a judging cavity is arranged in the placing plate, front and back symmetrical judging push blocks and judging blocks positioned between the two judging push blocks are arranged in the judging cavity in a sliding manner, front and back symmetrical linkage push plate sliding grooves are arranged on the front and back inner walls of the judging cavity, a linkage push plate is arranged in the linkage push plate sliding grooves in a sliding manner, the linkage push plate is fixedly connected with the judging push blocks through connecting rods, and a linkage push plate spring fixedly connected with the inner wall of the linkage push plate sliding groove is fixedly arranged on the end, the linkage push pedal is close to fixedly connected with on the terminal surface of judgement chamber one side the second stay cord is kept away from the other end of valve block, be equipped with the opening orientation on the inner wall around placing the chamber place the clamping piece spout at chamber center, it is equipped with the clamping piece to slide in the clamping piece spout, the clamping piece is kept away from place on the terminal surface of chamber one side fixedly be equipped with clamping piece spout inner wall fixed connection's clamping piece spring, the clamping piece is kept away from place fixedly connected with on the terminal surface of chamber one side the first stay cord is kept away from the other end of winding wheel, the clamping piece spout is kept away from place on the inner wall of chamber one side fixed intercommunication have the second pipeline is kept away from the other end in valve block chamber.

Furthermore, the balance auxiliary mechanism comprises support block chutes which are arranged on the bottom wall in the bottom plate and are symmetrical in the front and back direction and have downward openings, the other end, far away from the valve block cavity, of the second pipeline is fixedly communicated with the top wall in the support block chute, support blocks are arranged in the support block chutes in a sliding mode, support block springs fixedly connected with the top wall in the support block chute are fixedly arranged on the top end face of each support block, four groups of roller cavities with downward openings are arranged on the bottom end face of each support block, roller shafts are rotatably connected to the front inner wall and the rear inner wall of each roller cavity, and rollers are fixedly arranged on the roller shafts.

The invention has the beneficial effects that: the invention realizes that the center of gravity of the engineering equipment of the device is automatically adjusted through the clamping block, so that the semi-trailer is kept balanced in the carrying process, the potential safety hazard of the semi-trailer in the transportation process is reduced, and meanwhile, the supporting block is started to support one side with the shifted center of gravity, thereby ensuring the running safety of the vehicle.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram at C-C in FIG. 2 according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram at D-D in FIG. 2 according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram at E-E in FIG. 3 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

With reference to the accompanying drawings 1-6, the semitrailer for transporting construction equipment comprises a base plate 10, a vehicle shaft 39 which is rotationally symmetrical in the base plate 10 and extends towards the front side and the rear side, front-rear symmetrical wheels 11 are fixedly arranged on the vehicle shaft 39, a shaft sleeve cavity 47 with an upward opening is formed in the top end face of the base plate 10, a balance auxiliary mechanism is arranged in the base plate 10, a cargo box 13 is arranged on the top end face of the base plate 10, a placing cavity 21 with an upward opening is formed in the top end face of the cargo box 13, a balance judging mechanism is arranged in the placing cavity 21, a connector 15 is fixedly arranged on the left end face of the cargo box 13, a guide rail 14 is fixedly arranged on the right end face of the cargo box 13, threaded shaft sleeves 29 with front-rear symmetrical structures are slidably arranged in the shaft sleeve cavity 47, a hinged cavity 27 with a downward opening is formed in the bottom end face of the cargo box 13, the end faces, far away from each other, of the threaded shaft sleeves 29 are provided with connecting grooves, a U-shaped connecting rod slides in the connecting grooves, a lower fixing block is fixedly arranged on the connecting rod, the upper fixing block is hinged to the lower fixing block through a first hinge rod 28, a motor 26 is fixedly arranged on the inner wall of the rear side of the shaft sleeve cavity 47, a screw 30 with opposite front and rear threads is in power connection with the front end face of the motor 26, the screw 30 penetrates through the two threaded shaft sleeves 29 and is meshed with the two threaded shaft sleeves 29, the end face of the bottom of the threaded shaft sleeve 29 is provided with a bayonet 64 with a downward opening, the inner top wall of the bayonet 64 is fixedly provided with a rack 65, the inner bottom wall of the shaft sleeve cavity 47 is provided with clamping block cavities 50 with upward openings and symmetrical front and rear, first clamping blocks 49 are arranged in the clamping block cavities 50 in a sliding manner, the end face of the bottom of the first clamping, a second clamping block 46 which is positioned between the two clamping block cavities 50 and matched with the bayonet 64 is fixedly arranged on the bottom wall in the shaft sleeve cavity 47, a first gear cavity 66 with an upward opening is arranged on the top end surface of the second clamping block 46, first transmission shafts 68 are rotatably arranged on the front inner wall and the rear inner wall of the first gear cavity 66, a first transmission gear 67 meshed with the rack 65 is fixedly arranged on the first transmission shaft 68, a second gear cavity 45 with an upward opening is arranged on the bottom wall in the first gear cavity 66, second transmission shafts 70 are rotatably arranged on the front inner wall and the rear inner wall of the second gear cavity 45, a second transmission gear 69 meshed with the first transmission gear 67 and a winding wheel 71 positioned at the rear side of the second transmission gear 69 are fixedly arranged on the second transmission shaft 70, a first pull rope 16 is fixedly arranged on the winding wheel 71, and a flywheel cavity 38 is arranged on the inner wall at the front side of the shaft sleeve cavity 47, the screw rod 30 stretches into fixed flywheel 62 that is equipped with in the part in the flywheel chamber 38, it is equipped with axis of rotation 61 to rotate on the flywheel 62 front end face, be equipped with opening piston chamber 58 to the left on the flywheel chamber 38 right side inner wall, it is equipped with passageway 44 and first through-hole 57 to link up on the inner wall of piston chamber 58 right side, passageway 44 with all fixed check valves that are equipped with in the first through-hole 57, it is equipped with piston 63 to slide in the piston chamber 58, the fixed piston fixed block 59 that is equipped with on the piston 63 left side terminal surface, piston fixed block 59 with it is articulated through second hinge bar 60 between the axis of rotation 61.

Beneficially, a pressure storage cavity 40 is arranged on the inner bottom wall of the flywheel cavity 38, the inner wall of the rear side of the pressure storage cavity 40 is communicated with the other end of the channel 44 far away from the piston cavity 58, the inner wall of the rear side of the pressure storage cavity 40 is fixedly communicated with a first pipeline 43 positioned on the lower side of the channel 44, a pressure storage piston 42 is arranged in the pressure storage cavity 40 in a sliding manner, a pressure storage spring 41 fixedly connected with the inner wall of the front side of the pressure storage cavity 40 is fixedly arranged on the front side end face of the pressure storage piston 42, an exhaust hole communicated with the outside is arranged on the inner top wall of the pressure storage cavity 40 in a penetrating manner, a valve block cavity 51 is arranged on the inner wall of the rear side of the pressure storage cavity 40, a valve block 53 is arranged in the valve block cavity 51 in a sliding manner, a valve block port 52 with an upward opening is arranged on the top end face of the valve block 53, the other end of the pressure storage cavity 40 far away from the first pipeline 43 is fixedly communicated with the bottom wall of the valve block port 52, and a The front end face and the rear end face of the valve block 53 are fixedly connected with second pull ropes 34, the top wall in the valve block cavity 51 is fixedly communicated with second pipelines 18 which are symmetrical front and back, and the bottom wall in the valve block cavity 51 is fixedly communicated with valve block cavity exhaust holes which are symmetrical front and back and communicated with the outside.

Profitable, balanced mechanism of judging includes place the board 22 of placing that slides in the chamber 21 and be equipped with, place the fixed spring telescopic link 24 that is equipped with front and back symmetry on the terminal surface of board 22 bottom, place and link up the second through-hole 23 that is equipped with front and back symmetry about on the diapire in chamber 21, spring telescopic link 24 runs through second through-hole 23 with bottom plate 10 top end fixed connection, it is equipped with in the board 22 and judges chamber 31 to place, judge the judgement ejector pad 32 and be located two of symmetry about sliding in chamber 31 judge judgement piece 33 between the ejector pad 32, judge the linkage push pedal spout 37 that is equipped with front and back symmetry about the inner wall around chamber 31, slide in linkage push pedal spout 37 and be equipped with linkage push pedal 35, linkage push pedal 35 with judge through connecting rod fixed connection between the ejector pad 32, linkage push pedal 35 keeps away from judge on the terminal surface of chamber 31 one side fixedly be equipped with linkage push pedal 37 inner wall fixed connection's linkage push pedal Move push pedal spring 36, linkage push pedal 35 is close to fixedly connected with on the terminal surface of judgement chamber 31 one side second stay cord 34 is kept away from the other end of valve block 53, be equipped with the opening orientation on placing chamber 21 front and back inner wall place the clamping piece spout 19 at chamber 21 center, it is equipped with clamping piece 20 to slide in clamping piece spout 19, clamping piece 20 keeps away from place on the terminal surface of chamber 21 one side fixed be equipped with clamping piece spout 19 inner wall fixed connection's clamping piece spring 17, clamping piece 20 keeps away from place fixedly connected with on the terminal surface of chamber 21 one side first stay cord 16 keeps away from the other end of winding wheel 71, clamping piece spout 19 keeps away from place on the inner wall of chamber 21 one side fixed intercommunication have second pipeline 18 keeps away from the other end of valve block chamber 51.

Advantageously, the balance assisting mechanism includes support block sliding grooves 55 which are arranged on the inner bottom wall of the bottom plate 10 and are symmetrical in a front-back direction and have downward openings, the other end, away from the valve block cavity 51, of the second pipeline 18 is fixedly communicated with the top wall of the support block sliding groove 55, a support block 56 is slidably arranged in the support block sliding groove 55, a support block spring 72 fixedly connected with the inner top wall of the support block sliding groove 55 is fixedly arranged on the top end surface of the support block 56, four sets of roller cavities 73 with downward openings are arranged on the bottom end surface of the support block 56, roller shafts 74 are rotatably connected to the front inner wall and the rear inner wall of the roller cavities 73, and rollers 75 are fixedly arranged on the roller.

In the initial state, the threaded sleeves 29 are located at the extreme positions close to each other, the cargo box 13 is located at the lower extreme position, the retainer spring 17 is in the compressed state, the valve block 53 is located at the middle position under the action of the valve block spring 54, the first retainer 49 is located at the lower extreme position under the action of the electromagnetic spring 48 and is contracted in the retainer cavity 50, the support block 56 is contracted in the support block sliding groove 55 under the action of the support block spring 72, and the cargo box 13 is located at the lower extreme position

When the engineering equipment transportation device is in operation, the container 13 is located at the lower limit position, the engineering equipment is convenient to transport to the placing plate 22, after the engineering equipment transportation is completed, the starting motor 26 drives the screw rod 30 to rotate forward, the screw rod 30 rotates forward to drive the threaded shaft sleeve 29 to move towards the direction away from each other, the container 13 is moved upwards through the first hinge rod 28, the threaded shaft sleeve 29 moves towards the direction away from each other to drive the rack 65 to drive the first gear cavity 66 meshed with the rack 65 to rotate forward, the first gear cavity 66 rotates forward to drive the second transmission gear 69 meshed with the first transmission gear to rotate reversely, so as to drive the winding wheel 71 coaxial with the second transmission gear 69 to rotate reversely to loosen the first pull rope 16, so that the clamping block 20 moves towards the direction close to each other under the action of the clamping block spring 17 to clamp the engineering equipment to complete the clamping and fixing of the engineering equipment, when the threaded shaft sleeve 29 moves towards the limit position, so that the screw rod 30 drives the threaded shaft sleeve 29 to idle, the screw rod 30 rotates to drive the flywheel 62 to rotate, the piston 63 is driven by the second hinge rod 60 to move left and right to perform air-blowing pressurization in the pressure storage cavity 40, and the pressure storage piston 42 is pushed to compress the pressure storage spring 41 until high-pressure air is discharged outwards through the exhaust hole; when the center of gravity of the engineering equipment deviates during the running of the vehicle, taking backward deviation as an example, when the center of gravity of the engineering equipment deviates backward, the rear end face of the placing plate 22 displaces downward, so that the judgment block 33 displaces backward to push the judgment push block 32 and the linkage push plate 35 on the rear side to displace backward to tighten the second pull rope 34 on the rear side, so that the valve block 53 displaces backward, so that the second pipeline 18 on the rear side is communicated with the first pipeline 43, so that the high-pressure gas in the pressure storage cavity 40 flows through the second pipeline 18 on the rear side through the first pipeline 43 to enter the clamping block sliding groove 19 on the rear side and the supporting block 55 on the rear side, so that the clamping block 20 on the rear side is pushed to reset the center of gravity of the engineering equipment forward, and the supporting block 56 on the rear side is pushed to displace downward to abut against the ground to ensure that the vehicle does; after the gravity center balance is completed, judging that the push block 32 and the linkage push plate 35 push the judgment block 33 to return to the initial state under the action of the linkage push plate spring 36, and the valve block 53 returns to the initial state under the action of the valve block spring 54, so that the second pipeline 18 is communicated with the exhaust hole, and the pressure is relieved to the clamping block sliding groove 19 and the supporting block sliding groove 55, and the balance action is completed; when the engineering equipment is unloaded, the electromagnetic spring 48 is electrified to enable the first clamping block 49 to be clamped into the bayonet 64, the motor 26 drives the screw rod 30 to rotate reversely, so that the threaded shaft sleeve 29 moves towards the mutually approaching direction to enable the container 13 to move downwards, the rack 65 is meshed with the first transmission gear 67 to enable the first transmission gear 67 to rotate reversely, the winding wheel 71 rotates normally to tighten the first pull rope 16, the clamping block 20 is contracted in the clamping block sliding groove 19, the clamping of the engineering equipment is finished, and the unloading of the engineering equipment is facilitated.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides a construction equipment transportation semitrailer, includes the casing, its characterized in that: the vehicle axle is rotationally and bilaterally symmetrical and extends to the front side and the rear side, wheels which are symmetrical to each other are fixedly arranged on the vehicle axle, a shaft sleeve cavity with an upward opening is formed in the end surface of the top of the bottom plate, a balance auxiliary mechanism is arranged in the bottom plate, a container is arranged on the end surface of the top of the bottom plate, a placing cavity with an upward opening is formed in the end surface of the top of the container, a balance judging mechanism is arranged in the placing cavity, a connector is fixedly arranged on the end surface of the left side of the container, and a guide rail is fixedly arranged on; the container is characterized in that threaded shaft sleeves which are symmetrical front and back are arranged in the shaft sleeve cavity in a sliding manner, a hinged cavity with a downward opening is arranged on the end face of the bottom of the container, upper fixed blocks which are symmetrical front and back are fixedly arranged on the top wall in the hinged cavity, connecting grooves are arranged on the end faces, far away from each other, of the threaded shaft sleeves, a U-shaped connecting rod slides in the connecting grooves, a lower fixed block is fixedly arranged on the connecting rod, the upper fixed block is hinged with the lower fixed block through a first hinged rod, a motor is fixedly arranged on the inner wall of the rear side of the shaft sleeve cavity, a screw rod with opposite front and back threads is connected to the end face of the front side of the motor in a power connection manner, penetrates through the two threaded shaft sleeves and is meshed with the two threaded shaft sleeves, a bayonet with a downward opening is arranged on the, a first clamping block is arranged in the clamping block cavity in a sliding manner, an electromagnetic spring fixedly connected with the inner bottom wall of the clamping block cavity is fixedly arranged on the bottom end face of the bottom of the first clamping block, a second clamping block which is positioned between the two clamping block cavities and matched with the clamping opening is fixedly arranged on the inner bottom wall of the shaft sleeve cavity, a first gear cavity with an upward opening is arranged on the top end face of the second clamping block, a first transmission shaft is rotatably arranged on the front inner wall and the rear inner wall of the first gear cavity, a first transmission gear meshed with the rack is fixedly arranged on the first transmission shaft, a second gear cavity with an upward opening is arranged on the bottom wall of the first gear cavity, a second transmission shaft is rotatably arranged on the front inner wall and the rear inner wall of the second gear cavity, a second transmission gear meshed with the first transmission gear and a winding wheel positioned on the rear side of the second transmission gear are, the winding takes turns to and fixes being equipped with first stay cord, be equipped with the flywheel chamber on the axle sleeve chamber front side inner wall, the screw rod stretches into fixed flywheel that is equipped with in the part of flywheel intracavity, it is equipped with the axis of rotation to rotate on the flywheel front end face, be equipped with the piston chamber of opening left on the flywheel chamber right side inner wall, it is equipped with passageway and first through-hole to link up on the inner wall of piston chamber right side, the passageway with all fixed check valves that are equipped with in the first through-hole, the slip of piston intracavity is equipped with the piston, the fixed piston fixed block that is equipped with on the piston left side terminal surface, the piston fixed block with it is articulated through the second hinge bar between the axis of rotation.

2. The construction engineering equipment transportation semitrailer of claim 1, characterized in that: a pressure storage cavity is arranged on the inner bottom wall of the flywheel cavity, the inner wall of the rear side of the pressure storage cavity is communicated with the other end of the channel far away from the piston cavity, a first pipeline positioned on the lower side of the channel is fixedly communicated with the inner wall of the rear side of the pressure storage cavity, a pressure storage piston is slidably arranged in the pressure storage cavity, a pressure storage spring fixedly connected with the inner wall of the front side of the pressure storage cavity is fixedly arranged on the end face of the front side of the pressure storage piston, an exhaust hole communicated with the outside is arranged on the top wall in the pressure storage cavity in a through manner, a valve block cavity is arranged on the inner wall of the rear side of the pressure storage cavity, a valve block is slidably arranged in the valve block cavity, a valve block port with an upward opening is arranged on the end face of the top of the valve block, the inner bottom wall of the valve block port is fixedly communicated with the other end of the first pipeline far away from the pressure storage cavity, the valve block is characterized in that the front end face and the rear end face of the valve block are fixedly connected with second pull ropes, the top wall in the cavity of the valve block is fixedly communicated with second pipelines which are symmetrical front and back, and the bottom wall in the cavity of the valve block is fixedly communicated with valve block cavity exhaust holes which are symmetrical front and back and communicated with the outside.

3. The construction engineering equipment transportation semitrailer of claim 1, characterized in that: the balance judging mechanism comprises a placing plate arranged in the placing cavity in a sliding manner, spring telescopic rods which are symmetrical front and back are fixedly arranged on the end surface of the bottom of the placing plate, second through holes which are symmetrical front and back are arranged on the bottom wall of the placing cavity in a top-down penetrating manner, the spring telescopic rods penetrate through the second through holes and are fixedly connected with the end surface of the top of the bottom plate, a judging cavity is arranged in the placing plate, judging push blocks which are symmetrical front and back and are arranged in the judging cavity in a sliding manner and judging blocks which are positioned between the two judging push blocks are arranged in the judging cavity, linkage push plate sliding grooves which are symmetrical front and back are arranged on the front and back inner walls of the judging cavity are arranged in the linkage push plate sliding grooves, linkage push plate springs which are fixedly connected with the inner walls of the linkage push plate sliding grooves are fixedly arranged on the end surface of, the linkage push pedal is close to fixedly connected with on the terminal surface of judgement chamber one side the second stay cord is kept away from the other end of valve block, be equipped with the opening orientation on the inner wall around placing the chamber place the clamping piece spout at chamber center, it is equipped with the clamping piece to slide in the clamping piece spout, the clamping piece is kept away from place on the terminal surface of chamber one side fixedly be equipped with clamping piece spout inner wall fixed connection's clamping piece spring, the clamping piece is kept away from place fixedly connected with on the terminal surface of chamber one side the first stay cord is kept away from the other end of winding wheel, the clamping piece spout is kept away from place on the inner wall of chamber one side fixed intercommunication have the second pipeline is kept away from the other end in valve block chamber.

4. The construction engineering equipment transportation semitrailer of claim 1, characterized in that: the balance auxiliary mechanism comprises support block chutes which are arranged on the bottom wall in the bottom plate and are symmetrical front and back and have downward openings, the top wall in the support block chute is fixedly communicated with the other end of the second pipeline far away from the valve block cavity, support blocks are arranged in the support block chutes in a sliding manner, support block springs fixedly connected with the top wall in the support block chute are fixedly arranged on the top end surface of each support block, four groups of roller cavities with downward openings are arranged on the bottom end surface of each support block, roller shafts are rotatably connected to the front inner wall and the rear inner wall of each roller cavity, and rollers are fixedly arranged on the roller shafts.

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