CN221235127U - Hydraulic system for suspension arm bolt mechanism - Google Patents
Hydraulic system for suspension arm bolt mechanism Download PDFInfo
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- CN221235127U CN221235127U CN202323116223.8U CN202323116223U CN221235127U CN 221235127 U CN221235127 U CN 221235127U CN 202323116223 U CN202323116223 U CN 202323116223U CN 221235127 U CN221235127 U CN 221235127U
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- 239000000725 suspension Substances 0.000 title claims abstract description 23
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 130
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic system for a suspension arm bolt mechanism, which adopts an electromagnetic reversing valve group, a sequential valve group, a cylinder pin oil cylinder, an arm pin oil cylinder, an energy accumulator and a first electromagnetic reversing valve, wherein the energy accumulator is respectively connected with the cylinder pin oil cylinder and the arm pin oil cylinder after passing through the electromagnetic reversing valve group and the sequential valve group, and an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of the sequential valve group. The utility model can realize the interlocking of the cylinder pin oil cylinder and the arm pin oil cylinder; the open-close state of the sequence valve effectively avoids the outward extension of the oil cylinder caused by the internal leakage of the valve group, and reduces the possibility of jamming in the telescopic process of the suspension arm; the retraction of the cylinder pin oil cylinder and the extension of the arm pin oil cylinder are controlled by the energy accumulator, so that the oil supply of an oil pump is not needed, and the energy consumption can be reduced.
Description
Technical Field
The utility model relates to the technical field of control of a crane boom telescopic mechanism of an automobile crane, and particularly discloses a hydraulic system for a boom latch mechanism.
Background
The telescopic mechanism of the crane boom of the automobile is mainly provided with the bolt mechanism, the cylinder pin can control the telescopic of the boom, the arm pin can control the state of the boom to be kept, and the hydraulic system applied to the telescopic mechanism of the crane boom of the automobile can solve the related problems of complex structure, heavier dead weight and the like, and can improve the stability of the system.
The hydraulic system of the existing suspension arm bolt mechanism is shown in fig. 1, and comprises a filter, an oil pump 2, a valve bank 3, a first electromagnetic directional valve 4, a cylinder pin oil cylinder 5, an arm pin oil cylinder 6, a second electromagnetic directional valve 7, a one-way valve 8 and an unloading valve 9, wherein the valve bank 3 comprises a first flow dividing valve 31, a second flow dividing valve 32 and a pressure reducing valve 33.
The working principle of the hydraulic system of the existing suspension arm bolt mechanism is as follows:
When the suspension arm does not work, the oil pump 2 works, hydraulic oil directly passes through the unloading valve 9, and low pressure overflows.
Cylinder pin extension: the electromagnetic coil Y1 of the unloading valve 9 is powered on, the electromagnetic coil Y2 of the cylinder pin oil cylinder 5 is powered on, the large cavity of the cylinder pin oil cylinder 5 is filled with oil, and a piston rod extends out.
Cylinder pin shrinkage: the electromagnetic coil Y1 of the unloading valve 9 is powered on, the electromagnetic coil Y3 of the cylinder pin oil cylinder 5 is powered on, the small cavity of the cylinder pin oil cylinder 5 is filled with oil, and the piston rod is retracted.
Arm pin extension: the electromagnetic coil Y1 of the unloading valve 9 is powered on, the electromagnetic coil Y4 of the arm pin oil cylinder 6 is powered on, the large cavity of the arm pin oil cylinder 6 is filled with oil, and a piston rod extends out.
Arm pin shrinkage: the electromagnetic coil Y1 of the unloading valve 9 is powered on, the electromagnetic coil Y5 of the arm pin oil cylinder 6 is powered on, the small cavity of the arm pin oil cylinder 6 is filled with oil, and the piston rod is retracted.
The existing hydraulic system of the suspension arm bolt mechanism has the following defects:
1. the cylinder pin and the arm pin are independently controlled by two electromagnetic valves, so that the interlocking cannot be realized, and the clamping stagnation phenomenon easily occurs in the telescopic process of the suspension arm.
2. The cylinder pin oil cylinder and the arm pin oil cylinder adopt double-acting cylinders, oil source control is needed for expansion and contraction, and energy consumption is increased.
3. The boom has small installation space, the double-acting cylinder has large volume and is not easy to install.
Therefore, the above-mentioned drawbacks of the existing hydraulic system of the boom latch mechanism are technical problems to be solved.
Disclosure of utility model
The utility model provides a hydraulic system for a suspension arm latch mechanism, and aims to solve the defects of the existing suspension arm latch mechanism hydraulic system.
The utility model relates to a hydraulic system for a suspension arm bolt mechanism, which comprises an electromagnetic reversing valve group, a sequential valve group, a cylinder pin oil cylinder, an arm pin oil cylinder, an energy accumulator and a first electromagnetic reversing valve, wherein the energy accumulator is respectively connected with the cylinder pin oil cylinder and the arm pin oil cylinder after passing through the electromagnetic reversing valve group and the sequential valve group, and an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of the sequential valve group.
Further, the sequence valve group comprises a first sequence valve, a second sequence valve, a third sequence valve and a fourth sequence valve, an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of the second sequence valve, and an oil outlet of the second sequence valve is connected with a cylinder pin oil cylinder; an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of a third sequence valve, and an oil outlet of the third sequence valve is connected with an arm pin oil cylinder; an oil return port of the first electromagnetic reversing valve is connected with an oil outlet of the first sequence valve, and an oil inlet of the first sequence valve is connected with a cylinder pin oil cylinder; the oil return port of the first electromagnetic reversing valve is connected with the oil outlet of the fourth sequence valve, and the oil inlet of the fourth sequence valve is connected with the arm pin oil cylinder.
Further, the electromagnetic reversing valve group comprises a second electromagnetic reversing valve and a third electromagnetic reversing valve, and the energy accumulator is respectively connected with the second electromagnetic reversing valve and the third electromagnetic reversing valve.
Further, the hydraulic system for the suspension arm bolt mechanism further comprises an oil tank, an oil pump and a first one-way valve, one end of the first one-way valve is connected with an oil inlet of the first electromagnetic directional valve, and the other end of the first one-way valve is connected with the oil tank after passing through the oil pump and the oil conveying pipeline.
Further, the hydraulic system for the boom latch mechanism further comprises a second one-way valve, one end of the second one-way valve is connected with the energy accumulator, and the other end of the second one-way valve is connected with an oil inlet of the second sequence valve and an oil inlet of the third sequence valve respectively.
Further, the first electromagnetic directional valve adopts a two-position three-way directional valve.
Further, the second electromagnetic directional valve and the third electromagnetic directional valve are three-position four-way directional valves.
Further, the arm pin cylinder adopts a single acting cylinder.
Further, the cylinder pin cylinder adopts a single-acting cylinder.
Further, electromagnetic coils are arranged on the first electromagnetic directional valve, the second electromagnetic directional valve and the third electromagnetic directional valve.
The beneficial effects obtained by the utility model are as follows:
The utility model provides a hydraulic system for a suspension arm bolt mechanism, which adopts an electromagnetic reversing valve group, a sequential valve group, a cylinder pin oil cylinder, an arm pin oil cylinder, an energy accumulator and a first electromagnetic reversing valve, wherein the energy accumulator is respectively connected with the cylinder pin oil cylinder and the arm pin oil cylinder after passing through the electromagnetic reversing valve group and the sequential valve group, and an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of the sequential valve group. The hydraulic system for the suspension arm latch mechanism can realize interlocking of the cylinder pin oil cylinder and the arm pin oil cylinder; the open-close state of the sequence valve effectively avoids the outward extension of the oil cylinder caused by the internal leakage of the valve group, and reduces the possibility of jamming in the telescopic process of the suspension arm; the retraction of the cylinder pin oil cylinder and the extension of the arm pin oil cylinder are controlled by the energy accumulator, so that the oil supply of an oil pump is not needed, and the energy consumption can be reduced.
Drawings
FIG. 1 is a schematic diagram of the hydraulic operating principle of a hydraulic system of a conventional boom latch mechanism;
Fig. 2 is a schematic diagram of the hydraulic working principle of a hydraulic system for a boom latch mechanism according to the present utility model.
Reference numerals illustrate:
10. An electromagnetic reversing valve group; 20. a sequential valve block; 30. a cylinder pin cylinder; 40. arm pin oil cylinder; 50. an accumulator; 60. a first electromagnetic directional valve; 21. a first sequence valve; 22. a second sequence valve; 23. a third sequence valve; 24. a fourth sequence valve; 11. a second electromagnetic directional valve; 12. a third electromagnetic directional valve; 71. an oil tank; 72. an oil pump; 73. a first one-way valve; 80. and a second one-way valve.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, the utility model provides a hydraulic system for a boom latch mechanism, which comprises an electromagnetic directional valve bank 10, a sequential valve bank 20, a cylinder pin oil cylinder 30, an arm pin oil cylinder 40, an energy accumulator 50 and a first electromagnetic directional valve 60, wherein the energy accumulator 50 is respectively connected with the cylinder pin oil cylinder 30 and the arm pin oil cylinder 40 after passing through the electromagnetic directional valve bank 10 and the sequential valve bank 20, and an oil outlet of the first electromagnetic directional valve 60 is connected with an oil inlet of the sequential valve bank 20. In this embodiment, the electromagnetic directional valve group 10 may employ an existing electromagnetic directional valve group. The sequential valve block 20 may employ an existing sequential valve block.
Further, please refer to fig. 2, in the hydraulic system for a boom latch mechanism provided by the present utility model, the sequence valve group 20 includes a first sequence valve 21, a second sequence valve 22, a third sequence valve 23 and a fourth sequence valve 24, an oil outlet of the first electromagnetic directional valve 60 is connected with an oil inlet of the second sequence valve 22, and an oil outlet of the second sequence valve 22 is connected with a cylinder latch cylinder 30; the oil outlet of the first electromagnetic directional valve 60 is connected with the oil inlet of the third sequence valve 23, and the oil outlet of the third sequence valve 23 is connected with the arm pin oil cylinder 40; the oil return port of the first electromagnetic directional valve 60 is connected with the oil outlet of the first sequence valve 21, and the oil inlet of the first sequence valve 21 is connected with the cylinder pin oil cylinder 30; the oil return port of the first electromagnetic directional valve 60 is connected with the oil outlet of the fourth sequence valve 24, and the oil inlet of the fourth sequence valve 24 is connected with the arm pin cylinder 40. The electromagnetic directional valve group 10 includes a second electromagnetic directional valve 11 and a third electromagnetic directional valve 12, and the accumulator 50 is connected to the second electromagnetic directional valve 11 and the third electromagnetic directional valve 12, respectively.
Preferably, referring to fig. 2, the hydraulic system for a suspension arm latch mechanism according to the present utility model further includes an oil tank 71, an oil pump 72, a first check valve 73 and a second check valve 80, one end of the first check valve 73 is connected to an oil inlet of the first electromagnetic directional valve 60, and the other end of the first check valve 73 is connected to the oil tank 71 after passing through the oil pump 72 and the oil delivery pipeline. One end of the second check valve 80 is connected with the accumulator 50, and the other end of the second check valve 80 is connected with the oil inlet of the second sequence valve 22 and the oil inlet of the third sequence valve 23, respectively. The first electromagnetic directional valve 60 is a two-position three-way directional valve. The second electromagnetic directional valve 11 and the third electromagnetic directional valve 12 are three-position four-way directional valves. The arm pin cylinder 40 and the cylinder pin cylinder 30 each employ a single-acting cylinder. Electromagnetic coils are arranged on the first electromagnetic directional valve 60, the second electromagnetic directional valve 11 and the third electromagnetic directional valve 12. According to the hydraulic system for the suspension arm bolt mechanism, the cylinder pin oil cylinder and the arm pin oil cylinder are both single-acting cylinders, the oil cylinders can be automatically reset, the number of pipelines in a lifting appliance is reduced, later maintenance is facilitated, the cylinder pin and the arm pin are interlocked, the safety of the suspension arm can be improved, and meanwhile, the energy accumulator is additionally arranged in the hydraulic system, so that the energy consumption can be reduced, and the heating of the system can be reduced.
As shown in fig. 2, the hydraulic system for the boom latch mechanism provided in this embodiment has the following working principle:
the oil pump 72 is turned on and the oil passes through the second check valve 80 and then throttled, and the accumulator 50 begins to be stamped.
Cylinder pin extension: the electromagnetic coil Y4 of the second electromagnetic directional valve 11 is powered, the oil in the accumulator 50 flows out, the second sequence valve 22 is opened, the hydraulic oil enters the large cavity of the cylinder pin oil cylinder 30 through the second sequence valve 22, the piston rod of the cylinder pin oil cylinder 30 extends out, meanwhile, the third sequence valve 23 is closed, and the state of the arm pin oil cylinder 40 is maintained.
Arm pin retraction: the Y5 of the second electromagnetic directional valve 11 is powered on, the oil in the accumulator flows out, the third sequence valve 23 is opened, the hydraulic oil enters the small cavity of the arm pin oil cylinder through the third sequence valve 23, the piston rod of the arm pin oil cylinder is retracted, meanwhile, the second sequence valve 22 is closed, and the state of the cylinder pin oil cylinder 30 is maintained.
Cylinder pin retraction: the electromagnetic coil Y1 of the first electromagnetic directional valve 60 is powered on, the system returns oil, the electromagnetic coil Y2 of the third electromagnetic directional valve 12 is powered on, the oil in the accumulator flows out, the first sequence valve 21 is opened, the large-cavity hydraulic oil of the cylinder pin oil cylinder is pushed by a spring, flows into the oil tank 71 through the first sequence valve 21, and the piston rod of the cylinder pin oil cylinder 30 is retracted; at the same time, the fourth sequence valve 24 is closed and the arm pin cylinder 40 is maintained.
Arm pin extension: the first electromagnetic directional valve 60 is powered by the electromagnetic coil Y2, the system returns oil, the electromagnetic coil Y3 of the third electromagnetic directional valve 12 is powered by the system return oil, the oil in the accumulator 50 flows out, the second sequence valve 22 is opened, the small-cavity hydraulic oil of the cylinder pin oil cylinder 30 is pushed by a spring and flows into the oil tank 71 through the fourth sequence valve 24, and the piston rod of the arm pin oil cylinder 40 is retracted; at the same time, the first sequence valve 21 is closed and the state of the cylinder pin cylinder 30 is maintained.
Compared with the prior art, the hydraulic system for the suspension arm bolt mechanism provided by the embodiment adopts an electromagnetic reversing valve group, a sequential valve group, a cylinder pin oil cylinder, an arm pin oil cylinder, an energy accumulator and a first electromagnetic reversing valve, wherein the energy accumulator is respectively connected with the cylinder pin oil cylinder and the arm pin oil cylinder after passing through the electromagnetic reversing valve group and the sequential valve group, and an oil outlet of the first electromagnetic reversing valve is connected with an oil inlet of the sequential valve group. The hydraulic system for the suspension arm latch mechanism can realize interlocking of the cylinder pin oil cylinder and the arm pin oil cylinder; the open-close state of the sequence valve effectively avoids the outward extension of the oil cylinder caused by the internal leakage of the valve group, and reduces the possibility of jamming in the telescopic process of the suspension arm; the retraction of the cylinder pin oil cylinder and the extension of the arm pin oil cylinder are controlled by the energy accumulator, so that the oil supply of an oil pump is not needed, and the energy consumption can be reduced.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The hydraulic system for the suspension arm bolt mechanism is characterized by comprising an electromagnetic reversing valve group (10), a sequential valve group (20), a cylinder pin oil cylinder (30), an arm pin oil cylinder (40), an energy accumulator (50) and a first electromagnetic reversing valve (60), wherein the energy accumulator (50) is respectively connected with the cylinder pin oil cylinder (30) and the arm pin oil cylinder (40) after passing through the electromagnetic reversing valve group (10) and the sequential valve group (20), and an oil outlet of the first electromagnetic reversing valve (60) is connected with an oil inlet of the sequential valve group (20).
2. The hydraulic system for a boom latch mechanism according to claim 1, wherein the sequence valve block (20) comprises a first sequence valve (21), a second sequence valve (22), a third sequence valve (23) and a fourth sequence valve (24), the oil outlet of the first electromagnetic directional valve (60) is connected with the oil inlet of the second sequence valve (22), and the oil outlet of the second sequence valve (22) is connected with the cylinder pin cylinder (30); an oil outlet of the first electromagnetic directional valve (60) is connected with an oil inlet of the third sequence valve (23), and an oil outlet of the third sequence valve (23) is connected with the arm pin oil cylinder (40); an oil return port of the first electromagnetic directional valve (60) is connected with an oil outlet of the first sequence valve (21), and an oil inlet of the first sequence valve (21) is connected with the cylinder pin oil cylinder (30); the oil return port of the first electromagnetic directional valve (60) is connected with the oil outlet of the fourth sequence valve (24), and the oil inlet of the fourth sequence valve (24) is connected with the arm pin oil cylinder (40).
3. Hydraulic system for a boom latch mechanism according to claim 2, characterized in that the electromagnetic directional valve group (10) comprises a second electromagnetic directional valve (11) and a third electromagnetic directional valve (12), the accumulator (50) being connected to the second electromagnetic directional valve (11) and the third electromagnetic directional valve (12), respectively.
4. A hydraulic system for a boom latch mechanism according to claim 3, further comprising a tank (71), an oil pump (72) and a first check valve (73), one end of the first check valve (73) being connected to an oil inlet of the first electromagnetic directional valve (60), and the other end of the first check valve (73) being connected to the tank (71) after passing through the oil pump (72) and the oil delivery line.
5. A hydraulic system for a boom latch mechanism according to claim 3, further comprising a second non-return valve (80), one end of the second non-return valve (80) being connected to the accumulator (50), the other end of the second non-return valve (80) being connected to the oil inlet of the second sequence valve (22) and the oil inlet of the third sequence valve (23), respectively.
6. A hydraulic system for a boom latch mechanism according to claim 3, wherein the first electromagnetic directional valve (60) is a two-position three-way directional valve.
7. A hydraulic system for a boom latch mechanism according to claim 3, wherein the second electromagnetic directional valve (11) and the third electromagnetic directional valve (12) are each three-position four-way directional valves.
8. A hydraulic system for a boom latch mechanism according to claim 3, wherein the boom latch cylinder (40) employs a single acting cylinder.
9. A hydraulic system for a boom latch mechanism according to claim 3, wherein the cylinder pin cylinder (30) is a single acting cylinder.
10. A hydraulic system for a boom latch mechanism according to claim 3, characterised in that the first electromagnetic directional valve (60), the second electromagnetic directional valve (11) and the third electromagnetic directional valve (12) are each provided with an electromagnetic coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323116223.8U CN221235127U (en) | 2023-11-17 | 2023-11-17 | Hydraulic system for suspension arm bolt mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323116223.8U CN221235127U (en) | 2023-11-17 | 2023-11-17 | Hydraulic system for suspension arm bolt mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221235127U true CN221235127U (en) | 2024-06-28 |
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ID=91597280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323116223.8U Active CN221235127U (en) | 2023-11-17 | 2023-11-17 | Hydraulic system for suspension arm bolt mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221235127U (en) |
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2023
- 2023-11-17 CN CN202323116223.8U patent/CN221235127U/en active Active
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