CN209261941U - The hydraulic control system and crane of crane - Google Patents
The hydraulic control system and crane of crane Download PDFInfo
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- CN209261941U CN209261941U CN201822069524.2U CN201822069524U CN209261941U CN 209261941 U CN209261941 U CN 209261941U CN 201822069524 U CN201822069524 U CN 201822069524U CN 209261941 U CN209261941 U CN 209261941U
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- oil cylinder
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Abstract
The utility model discloses a kind of hydraulic control system of crane and cranes.The hydraulic control system of crane includes hydraulic pump, amplitude oil cylinder, telescopic oil cylinder and oil return control valve, and oil return control valve is set between the rod chamber of amplitude oil cylinder and the rodless cavity of telescopic oil cylinder to control the rodless cavity or fuel tank that the oil return of the rod chamber of amplitude oil cylinder when stretching out of the piston rod of amplitude oil cylinder flows to telescopic oil cylinder.The hydraulic control system of the utility model recycles to realize the linkage between amplitude oil cylinder and telescopic oil cylinder using system own traffic, amplitude oil cylinder oil return of its rod chamber when stretching out enters the rodless cavity of telescopic oil cylinder, compared with prior art, the volume for entering the hydraulic oil of the rodless cavity of telescopic oil cylinder in same time increases, so as to shorten the time used in entire branch vehicle, branch vehicle efficiency is improved.
Description
Technical field
The utility model relates to hoisting machinery technical field, in particular to the hydraulic control system and lifting of a kind of crane
Machine.
Background technique
Crane generally uses valve control load sensitive system at present, carries out flow point to each executive component by multi-way valve
Match, when individual part, flow can satisfy executive component needs, when carrying out composite move, be limited by oil pump maximum stream flow, respectively
A executive component is slow in one's movements, or even cannot achieve composite move.Crane needs before carrying out lifting operation crane
Be adjusted to working condition, the supporting leg that will generally get off stretch out and by the length adjustment of get on the bus luffing and telescopic arm of getting on the bus in place.
Fig. 1 shows the structure of the hydraulic control system of crane in the prior art.The hydraulic control system includes hydraulic
Pump 7a, luffing reversal valve 6a, luffing balanced valve 4a, amplitude oil cylinder 1a, telescopic oil cylinder 2a, flexible balanced valve 3a and flexible commutation
Valve 5a.When luffing reversal valve 6a is in left position, amplitude oil cylinder retraction；When luffing reversal valve 6a is in right position, amplitude oil cylinder is stretched out.
When flexible reversal valve 5a is in left position, telescopic oil cylinder retraction；When flexible reversal valve 5a is in right position, telescopic oil cylinder stretches out.
To improve branch vehicle efficiency, the throttle of engine is generally adjusted to maximum by operator, but by the discharge capacity of hydraulic pump 7a
Limitation, the maximum stream flow of hydraulic pump 7a are definite value, and the volume of its rodless cavity and be fixed when telescopic oil cylinder and amplitude oil cylinder are stretched out
Value, therefore luffing and flexible single movement or composite move, the time of entire branch vehicle process are either controlled during branch vehicle
Centainly, the branch vehicle time can not be shortened again.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic control system of crane and cranes, to shorten crane
The branch vehicle time.
The utility model first aspect provides a kind of hydraulic control system of crane, comprising:
Hydraulic pump；
Amplitude oil cylinder；
Telescopic oil cylinder；And
Oil return control valve is set between the rod chamber of amplitude oil cylinder and the rodless cavity of telescopic oil cylinder to control amplitude oil cylinder
Piston rod when stretching out the oil return of the rod chamber of amplitude oil cylinder flow to the rodless cavity or fuel tank of telescopic oil cylinder.
In some embodiments, oil return control valve is reversal valve.
In some embodiments, oil return control valve have the first hydraulic fluid port, the second hydraulic fluid port and third hydraulic fluid port, the first hydraulic fluid port with stretch
The rodless cavity of contracting oil cylinder connects, and the second hydraulic fluid port is connect with fuel tank, the rod chamber connection of third hydraulic fluid port and amplitude oil cylinder, oil return control
When valve is in the first operating position, the first hydraulic fluid port cut-off, the second hydraulic fluid port is connected to third hydraulic fluid port；Oil return control valve is in the second work
When making position, the first hydraulic fluid port is connected to third hydraulic fluid port, the cut-off of the second hydraulic fluid port.
In some embodiments, hydraulic control system further includes luffing reversal valve and flexible reversal valve, and luffing reversal valve is set
It is placed in control the flexible of amplitude oil cylinder between hydraulic pump and amplitude oil cylinder, flexible reversal valve is set to hydraulic pump and telescopic oil cylinder
Between to control the flexible of telescopic oil cylinder.
In some embodiments, hydraulic control system further includes that the luffing being set between the disengaging oil of luffing reversal valve is mended
Repay valve.
In some embodiments, hydraulic control system further includes the flexible benefit being set between the disengaging oil of flexible reversal valve
Repay valve.
In some embodiments, hydraulic control system further includes the luffing balanced valve connecting with the rodless cavity of amplitude oil cylinder.
In some embodiments, hydraulic control system further includes the flexible balanced valve connecting with the rodless cavity of telescopic oil cylinder.
In some embodiments, hydraulic control system further includes the rod chamber and/or rodless cavity for detecting amplitude oil cylinder
Oil pressure pressure sensor.
The utility model second aspect provides a kind of crane, including as any one of the utility model first aspect provides
Hydraulic control system.
Based on technical solution provided by the utility model, when needing quick branch vehicle, control luffing reversal valve makes luffing
The rodless cavity that the oil return for the rod chamber that oil cylinder stretches out and oil return control valve controls amplitude oil cylinder flows to telescopic oil cylinder makes flexible oil
Cylinder linkage is stretched out.The hydraulic control system of the utility model recycles to realize amplitude oil cylinder and flexible oil using system own traffic
Linkage between cylinder, amplitude oil cylinder oil return of its rod chamber when stretching out enters the rodless cavity of telescopic oil cylinder, with the prior art
It compares, the volume that the hydraulic oil of the rodless cavity of telescopic oil cylinder is entered in same time increases, so as to shorten used in entire branch vehicle
Time improves branch vehicle efficiency.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the hydraulic control system of the crane of the prior art；
Fig. 2 is the structural schematic diagram of the hydraulic control system of the crane of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the hydraulic control system of another embodiment of the utility model；
Each appended drawing reference respectively represents:
1a, amplitude oil cylinder；2a, telescopic oil cylinder；3a, flexible balanced valve；4a, luffing balanced valve；5a, flexible reversal valve；6a,
Luffing reversal valve；7a, hydraulic pump；
1, amplitude oil cylinder；2, telescopic oil cylinder；3, stretch balanced valve；4, luffing balanced valve；5, stretch reversal valve；6, luffing changes
To valve；7, hydraulic pump；8, oil return control valve；9, flexible compensation valve；10, compensation of luff valve；11, pressure sensor.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing
The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant
Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding
Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example
Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar
Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with
In attached drawing afterwards do not need that it is further discussed.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
As shown in Fig. 2, the hydraulic control system of the crane of the present embodiment includes hydraulic pump 7, amplitude oil cylinder 1, flexible oil
Cylinder 2, luffing reversal valve 6, flexible reversal valve 5 and oil return control valve 8.
The oil liquid that luffing reversal valve 6 controls the oil outlet of hydraulic pump 7 flows to rod chamber or the rodless cavity of amplitude oil cylinder 1 to control
The stretching or retraction of amplitude oil cylinder 1 processed.The oil liquid for the oil outlet that flexible reversal valve 5 controls hydraulic pump 7 flows to having for telescopic oil cylinder 2
Rod cavity or rodless cavity are to control the stretching or retraction of telescopic oil cylinder 2.
Oil return control valve 8 is set between the rod chamber of amplitude oil cylinder 1 and the rodless cavity of telescopic oil cylinder 2 to control luffing oil
The oil return of the rod chamber of cylinder 1 flows to the rodless cavity or fuel tank of telescopic oil cylinder 2.
When needing quick branch vehicle, control luffing reversal valve 6 is in right position so that amplitude oil cylinder 1 is stretched out and oil return controls
The rodless cavity that the oil return that valve 8 controls the rod chamber of amplitude oil cylinder 1 flows to telescopic oil cylinder 2 stretches out the linkage of telescopic oil cylinder 2.This reality
The hydraulic control system for applying example is recycled using system own traffic to realize the linkage between amplitude oil cylinder and telescopic oil cylinder, luffing
Oil cylinder oil return of its rod chamber when stretching out enters the rodless cavity of telescopic oil cylinder, compared with prior art, in same time into
The volume for entering the hydraulic oil of the rodless cavity of telescopic oil cylinder increases, and so as to shorten the time used in entire branch vehicle, improves branch vehicle efficiency.
The oil return control valve 8 of the present embodiment is reversal valve.
Specifically, the oil return control valve 8 of the present embodiment has the first hydraulic fluid port, the second hydraulic fluid port and third hydraulic fluid port, the first hydraulic fluid port
It is connect with the rodless cavity of telescopic oil cylinder 2, the second hydraulic fluid port is connect with fuel tank, and third hydraulic fluid port is connect with the rod chamber of amplitude oil cylinder 1, is returned
When oil control valve 8 is in the first operating position, the first hydraulic fluid port cut-off, the second hydraulic fluid port is connected to third hydraulic fluid port；At oil return control valve 8
When the second operating position, the first hydraulic fluid port is connected to third hydraulic fluid port, the cut-off of the second hydraulic fluid port.When not needing quick branch vehicle, controllably
Oil return control valve 8 processed is in the first operating position.When needing quick branch vehicle, oil return control valve 8 can control to be in the second work
Position.The hydraulic control system of the present embodiment allows user to choose whether quick branch vehicle according to the actual demand of oneself,
Therefore the range of applicability of the hydraulic control system of the present embodiment is larger.
The hydraulic control system of the present embodiment further includes that the luffing being set on the oil return line of the rodless cavity of amplitude oil cylinder 1 is put down
Weighing apparatus valve 4 and be set to telescopic oil cylinder 2 rodless cavity oil return line on flexible balanced valve 3.The setting of luffing balanced valve 4 so that
The amplitude oil cylinder of the crane of the present embodiment speed when retracting is controllable, avoids falling too fast and causing danger.Similarly, it stretches
The setting of balanced valve 3 so that the crane of the present embodiment telescopic oil cylinder when retracting speed it is controllable.
Each control valve of the present embodiment is solenoid electric valve.As long as passing through obtaining for the control terminal of control solenoid electric valve
Electricity or power loss can control derricking motion, be simple and efficient.
As shown in figure 3, in the present embodiment, hydraulic control system further includes compensation of luff valve 10 and flexible compensation valve 9.
The setting of compensation of luff valve 10 and flexible compensation valve 9 is so that the hydraulic control system of the present embodiment is realizing the flexible composite moving of luffing
Assignment of traffic is not affected by a load when making.
The luffing reversal valve 6 of the present embodiment has the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port
And the 6th hydraulic fluid port.First hydraulic fluid port is connect with the oil outlet of hydraulic pump 7, and the second hydraulic fluid port is connect with the rodless cavity of amplitude oil cylinder 1, the
Three hydraulic fluid ports are connect with the rod chamber of amplitude oil cylinder 1, and the 4th hydraulic fluid port is connect with the oil inlet of compensation of luff valve 10, the 5th hydraulic fluid port and change
The oil outlet of width recuperation valve 10 connects, and the 6th hydraulic fluid port is connect with fuel tank.When luffing reversal valve 6 is in middle position, the first hydraulic fluid port, second
Hydraulic fluid port, the 4th hydraulic fluid port and the 5th hydraulic fluid port are turned off, and third hydraulic fluid port is connected to the 6th hydraulic fluid port.When luffing reversal valve 6 is in left position,
First hydraulic fluid port is connected to the 4th hydraulic fluid port, and the second hydraulic fluid port is connected to the 5th hydraulic fluid port, and third hydraulic fluid port is connected to the 6th hydraulic fluid port, at this time luffing
The rodless cavity oil inlet of oil cylinder 1 is so that amplitude oil cylinder 1 is stretched out.When luffing reversal valve 6 is in right position, the first hydraulic fluid port and the 4th hydraulic fluid port connect
Logical, the second hydraulic fluid port is connected to the 6th hydraulic fluid port, and third hydraulic fluid port is connected to the 5th hydraulic fluid port, the rod chamber oil inlet of amplitude oil cylinder 1 at this time and
Retract amplitude oil cylinder.
The structure of the flexible reversal valve 5 of the present embodiment is similar with the structure of luffing reversal valve 6, and details are not described herein again.
As shown in Figures 2 and 3, in order to which the working condition to amplitude oil cylinder is monitored, the hydraulic control system of the present embodiment
System further includes the pressure sensor 11 of the oil pressure of the rod chamber and rodless cavity for detecting amplitude oil cylinder 1.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (10)
1. a kind of hydraulic control system of crane characterized by comprising
Hydraulic pump (7)；
Amplitude oil cylinder (1)；
Telescopic oil cylinder (2)；And
Oil return control valve (8) is set between the rod chamber of the amplitude oil cylinder (1) and the rodless cavity of the telescopic oil cylinder (2)
It is stretched described in the oil return flow direction of piston rod rod chamber of the amplitude oil cylinder (1) when stretching out of the amplitude oil cylinder (1) with controlling
The rodless cavity or fuel tank of contracting oil cylinder (2).
2. the hydraulic control system of crane according to claim 1, which is characterized in that the oil return control valve (8) is
Reversal valve.
3. the hydraulic control system of crane according to claim 1, which is characterized in that oil return control valve (8) tool
There are the first hydraulic fluid port, the second hydraulic fluid port and third hydraulic fluid port, first hydraulic fluid port is connect with the rodless cavity of the telescopic oil cylinder (2), described
Second hydraulic fluid port is connect with fuel tank, and the third hydraulic fluid port is connect with the rod chamber of the amplitude oil cylinder (1), the oil return control valve
(8) when being in the first operating position, the first hydraulic fluid port cut-off, second hydraulic fluid port is connected to the third hydraulic fluid port；Described time
When oil control valve (8) is in the second operating position, first hydraulic fluid port is connected to the third hydraulic fluid port, and second hydraulic fluid port is cut
Only.
4. the hydraulic control system of crane according to claim 1, which is characterized in that the hydraulic control system is also wrapped
Luffing reversal valve (6) and flexible reversal valve (5) are included, the luffing reversal valve (6) is set to the hydraulic pump (7) and the luffing
To control the flexible of the amplitude oil cylinder (1) between oil cylinder (1), the flexible reversal valve (5) be set to the hydraulic pump (7) with
To control the flexible of the telescopic oil cylinder (2) between the telescopic oil cylinder (2).
5. the hydraulic control system of crane according to claim 4, which is characterized in that the hydraulic control system is also wrapped
Include the compensation of luff valve (10) being set between the disengaging oil of the luffing reversal valve (6).
6. the hydraulic control system of crane according to claim 4, which is characterized in that the hydraulic control system is also wrapped
Include the flexible compensation valve (9) being set between the disengaging oil of the flexible reversal valve (5).
7. the hydraulic control system of crane according to claim 1, which is characterized in that the hydraulic control system is also wrapped
Include the luffing balanced valve (4) connecting with the rodless cavity of the amplitude oil cylinder (1).
8. the hydraulic control system of crane according to claim 1, which is characterized in that the hydraulic control system is also wrapped
Include the flexible balanced valve (3) connecting with the rodless cavity of the telescopic oil cylinder (2).
9. the hydraulic control system of crane according to claim 1, which is characterized in that the hydraulic control system is also wrapped
Include the pressure sensor (11) of the oil pressure of the rod chamber and/or rodless cavity for detecting the amplitude oil cylinder (1).
10. a kind of crane, which is characterized in that including hydraulic control system as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822069524.2U CN209261941U (en) | 2018-12-11 | 2018-12-11 | The hydraulic control system and crane of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822069524.2U CN209261941U (en) | 2018-12-11 | 2018-12-11 | The hydraulic control system and crane of crane |
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| Publication Number | Publication Date |
|---|---|
| CN209261941U true CN209261941U (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822069524.2U Active CN209261941U (en) | 2018-12-11 | 2018-12-11 | The hydraulic control system and crane of crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814961A (en) * | 2021-01-15 | 2021-05-18 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
| CN113911928A (en) * | 2021-09-26 | 2022-01-11 | 法兰泰克(常州)工程机械有限公司 | Crank arm type hydraulic system of luffing mechanism of overhead working truck |
-
2018
- 2018-12-11 CN CN201822069524.2U patent/CN209261941U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814961A (en) * | 2021-01-15 | 2021-05-18 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
| CN112814961B (en) * | 2021-01-15 | 2023-05-30 | 三一汽车制造有限公司 | Boom hydraulic system of working vehicle, control method and working vehicle |
| CN113911928A (en) * | 2021-09-26 | 2022-01-11 | 法兰泰克(常州)工程机械有限公司 | Crank arm type hydraulic system of luffing mechanism of overhead working truck |
| CN113911928B (en) * | 2021-09-26 | 2024-03-22 | 法兰泰克(常州)工程机械有限公司 | Hydraulic system of luffing mechanism of crank arm type overhead working truck |
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