CN109515099B - Suspension hydraulic system and vehicle with same - Google Patents
Suspension hydraulic system and vehicle with same Download PDFInfo
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- CN109515099B CN109515099B CN201910016378.3A CN201910016378A CN109515099B CN 109515099 B CN109515099 B CN 109515099B CN 201910016378 A CN201910016378 A CN 201910016378A CN 109515099 B CN109515099 B CN 109515099B
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- valve
- oil
- electromagnetic valve
- main pipe
- way valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a suspension hydraulic system which comprises a motor, an oil tank, a hydraulic pump, an oil return main pipe and an oil inlet main pipe, wherein the oil return main pipe and the oil inlet main pipe are connected with the oil tank, the hydraulic pump is respectively connected with the motor and the oil inlet main pipe, and the suspension hydraulic system is characterized by further comprising at least one group of adjusting devices, each adjusting device comprises a rectifying component and an executing component arranged on each wheel suspension, the rectifying component is connected with the oil inlet main pipe, and the executing component is connected with the rectifying component. The invention has simple structure and low development cost, can realize the adjustment of the height of the vehicle body through the system, and in addition, the flow control device arranged in the invention plays a role in the ascending and descending of the vehicle body, the number of the flow valves is doubled, and the flow of oil liquid can be controlled by the rectifying electromagnetic valve group in the flow control device, thereby realizing the adjustment of the ascending and descending speed of the vehicle body and greatly reducing the development cost.
Description
Technical Field
The invention relates to a vehicle suspension height adjusting system, in particular to a suspension hydraulic system and a vehicle with the same.
Background
The hydro-pneumatic suspension is a suspension device integrating an elastic element and a shock absorber, overcomes the linear characteristic of a leaf spring, can be well applied to engineering vehicles, special vehicles and the like, has good shock absorption performance, smoothness and stability of vehicle running, and can realize adjustment of the height of the vehicle. At present, foreign related hydro-pneumatic springs and hydro-pneumatic suspension technologies are mature products, and the automatic adjusting mechanism of the hydro-pneumatic springs and hydro-pneumatic suspension technologies are applied to various engineering vehicles and special vehicles. And domestic research is carried out later in this aspect.
The existing hydro-pneumatic suspension system can also realize the adjustment of the height of the vehicle body, but has the defects of complex structure and high development cost, and is not suitable for popularization and application.
Disclosure of Invention
The invention aims to solve the technical problem of providing a suspension hydraulic system which is simple in structure and low in development cost, and further provides a vehicle with the suspension hydraulic system.
The technical scheme adopted for solving the technical problems is as follows: the suspension hydraulic system comprises a motor, an oil tank, a hydraulic pump, an oil return main pipe and an oil inlet main pipe, wherein the oil return main pipe and the oil inlet main pipe are connected with the oil tank, the hydraulic pump is respectively connected with the motor and the oil inlet main pipe, the suspension hydraulic system further comprises at least one group of adjusting devices, the adjusting devices comprise rectifying assemblies and executing assemblies arranged on each wheel suspension, the rectifying assemblies are connected with the oil inlet main pipe, and the executing assemblies are connected with the rectifying assemblies;
the rectifying component comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve, a first electromagnetic valve and a flow control device;
the execution assembly comprises a second electromagnetic valve and an execution unit, and the second electromagnetic valve is connected with the execution unit;
the first check valve, the first electromagnetic valve, the flow control device and the second electromagnetic valve are sequentially connected in series through an oil way branch pipe, and the first electromagnetic valve is connected with an oil return main pipe;
the flow control device comprises a fluid inlet and a fluid outlet, the second one-way valve is arranged between the first electromagnetic valve and the fluid inlet, the third one-way valve is arranged between the first electromagnetic valve and the fluid outlet, the fourth one-way valve is arranged between the second electromagnetic valve and the fluid inlet, and the fifth one-way valve is arranged between the second electromagnetic valve and the fluid outlet;
the flow guiding directions of the second one-way valve and the third one-way valve are opposite, the flow guiding directions of the second one-way valve and the fifth one-way valve are consistent, and the flow guiding directions of the third one-way valve and the fourth one-way valve are consistent;
the flow control device includes at least one flow valve.
The invention further preferably comprises the following steps: the flow control device comprises three flow valves, namely a first flow valve and a second flow valve, which are connected in parallel through pipelines.
The invention further preferably comprises the following steps: the flow control device also comprises a third electromagnetic valve, and the third electromagnetic valve is connected with the first flow valve in series.
The invention further preferably comprises the following steps: the hydraulic system further comprises a first overflow valve, a fourth electromagnetic valve and a throttle valve, wherein the first overflow valve is arranged between the hydraulic pump and the oil return main pipe, the throttle valve is connected with the fourth electromagnetic valve in series, the fourth electromagnetic valve is connected with the hydraulic pump, and the throttle valve is connected with the oil return main pipe. Starting the motor and operating the hydraulic pump; the rated discharge oil of the hydraulic pump returns to the oil tank through the fourth electromagnetic valve and the throttle valve, the oil in the loop establishes a lower idle pressure for the system due to the flow limiting effect of the throttle valve, so that the aim of low-pressure starting of the system is fulfilled, the idle pressure ensures the reliability of the action of valve elements, the first overflow valve is used for regulating the pressure of the system, the fourth electromagnetic valve is powered on, the valve core is closed, and the rated discharge oil of the hydraulic pump returns to the oil tank through the first overflow valve to establish working pressure for the system.
The invention further preferably comprises the following steps: the rectifying assembly further comprises a second overflow valve, and the second overflow valve is arranged between the first electromagnetic valve and the oil return main pipe.
The invention further preferably comprises the following steps: the execution assembly further comprises a third overflow valve, and the third overflow valve is connected with the second electromagnetic valve in parallel. The third overflow valve plays an overload protection role.
The invention further preferably comprises the following steps: and a pressure observation port connected with the hydraulic pump.
The invention further preferably comprises the following steps: the system also comprises a first pressure transmitter and a second pressure transmitter, wherein the first pressure transmitter is connected with the pressure observation port in parallel, and the second pressure transmitter is connected with the third overflow valve in parallel.
The invention further preferably comprises the following steps: the valve core of the second electromagnetic valve adopts a cone valve structure. The valve core of the cone valve structure has better sealing performance, can completely cut off an oil way, ensures that oil in the hydro-pneumatic spring cannot flow back, and ensures the reliability of the position fixing of the suspension after adjustment.
The invention further preferably comprises the following steps: a vehicle includes the suspension hydraulic system.
Compared with the prior art, the invention has the advantages that the structure is simple, the development cost is low, the height of the vehicle body can be regulated through the system, the traditional lifting speed regulation of the vehicle body needs to be controlled through two groups of flow valves, namely, the lifting of the vehicle body needs one group of flow valves, the lowering of the vehicle body also needs to use the other group of flow valves, the flow control device provided by the invention plays a role in the lifting and lowering of the vehicle body, the number of the flow valves is doubled, and the flow of oil can be controlled by the rectifying electromagnetic valve group in the flow control device, so that the lifting speed regulation of the vehicle body is realized, and the development cost is greatly reduced.
In addition, when the oil flows back to the rectifying component, the first electromagnetic valve is electrified, the oil flows back to each executing component under the action of the first one-way valve, and the oil flows in each executing component, so that the pressure in each executing unit (including an oil cylinder, an oil-gas spring and the like) is balanced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1: the suspension hydraulic system comprises a motor, an oil tank 1, a hydraulic pump 2, an oil return main pipe and an oil inlet main pipe which are connected with the oil tank 1, wherein the hydraulic pump 2 is respectively connected with the motor and the oil inlet main pipe, and at least one group of adjusting devices, each adjusting device comprises a rectifying component and an executing component arranged on each wheel suspension, the rectifying component is connected with the oil inlet main pipe, and the executing component is connected with the rectifying component;
the rectifying component comprises a first one-way valve 4, a second one-way valve 7, a third one-way valve 8, a fourth one-way valve 9, a fifth one-way valve 10, a first electromagnetic valve 5 and a flow control device;
the execution assembly comprises a second electromagnetic valve 6 and an execution unit 23, and the second electromagnetic valve 6 is connected with the execution unit 23;
the first check valve 4, the first electromagnetic valve 5, the flow control device and the second electromagnetic valve 6 are sequentially connected in series through oil way branch pipes, and the first electromagnetic valve 5 is connected with an oil return main pipe;
the flow control device comprises a fluid inlet and a fluid outlet, a second one-way valve 7 is arranged between the first electromagnetic valve 5 and the fluid inlet, a third one-way valve 8 is arranged between the first electromagnetic valve 5 and the fluid outlet, a fourth one-way valve 9 is arranged between the second electromagnetic valve 6 and the fluid inlet, and a fifth one-way valve 10 is arranged between the second electromagnetic valve 6 and the fluid outlet;
the flow guiding direction of the second one-way valve 7 is opposite to that of the third one-way valve 8, the flow guiding direction of the second one-way valve 7 is consistent with that of the fifth one-way valve 10, and the flow guiding direction of the third one-way valve 8 is consistent with that of the fourth one-way valve 9;
the flow control device includes at least one flow valve.
The flow control device comprises three flow valves, namely a first flow valve 11 and a second flow valve 12, wherein the first flow valve 11 and the second flow valve 12 are connected in parallel through pipelines.
The flow control device further comprises a third solenoid valve 13, the third solenoid valve 13 being in series with the first flow valve 11.
The hydraulic system further comprises a first overflow valve 14, a fourth electromagnetic valve 15 and a throttle valve 16, wherein the first overflow valve 14 is arranged between the hydraulic pump 2 and the oil return main pipe, the throttle valve 16 is connected with the fourth electromagnetic valve 15 in series, the fourth electromagnetic valve 15 is connected with the hydraulic pump 2, and the throttle valve 16 is connected with the oil return main pipe.
The rectifying assembly further comprises a second overflow valve 17, and the second overflow valve 17 is arranged between the first electromagnetic valve 5 and the oil return main pipe.
The actuator assembly further comprises a third relief valve 18, the third relief valve 18 being connected in parallel with the second solenoid valve 6.
And a pressure observation port 19 connected to the hydraulic pump 2.
Also included are a first pressure transmitter 21 and a second pressure transmitter 22, the first pressure transmitter 21 being connected in parallel with the pressure viewing port 19 and the second pressure transmitter 22 being connected in parallel with the third relief valve 18.
The valve core of the second electromagnetic valve 6 adopts a cone valve structure.
A vehicle includes a suspension hydraulic system.
The ascending process of the vehicle body:
a. starting the motor and starting the hydraulic pump 2 to work; the rated discharge oil of the hydraulic pump 2 returns to the oil tank 1 through the fourth electromagnetic valve 15 and the throttle valve 16, and the oil in the loop establishes a lower idle pressure due to the flow limiting effect of the throttle valve 16, so that the aim of low-pressure starting of the system is fulfilled, and the idle pressure ensures the reliability of the action of valve elements;
b. the fourth electromagnetic valve 15 is powered on, the valve core is closed, and the rated oil discharged by the hydraulic pump 2 returns to the oil tank 1 through the first overflow valve 14, so that the working pressure is established for the system.
c. The first electromagnetic valve 5 is powered on, the opening from the opening 5A to the opening P of the first electromagnetic valve is conducted, and the opening O is closed; the second electromagnetic valve 6 is powered on, and the valve core is conducted; the oil sequentially passes through the first one-way valve 4, the first electromagnetic valve 5, the second one-way valve 7, the flow control device, the fifth one-way valve 10 and the second electromagnetic valve 6, and finally reaches the hydro-pneumatic spring 3 to realize the ascending action of the vehicle body.
The oil undergoes differential pressure compensation in the flow control device, namely, the oil is respectively shunted to the first flow valve 11 and the second flow valve 12 through the third electromagnetic valve 13 and the pipeline, and finally flows are merged to the fifth one-way valve 10 after being stabilized.
d. The third electromagnetic valve 13 is powered on, the valve core is closed, and the oil input of the first flow valve 11 is cut off; thereby correspondingly reducing the volume flow of oil flowing into the hydro-pneumatic spring 3 and realizing the function of adjusting the ascending speed of the vehicle body. At this time, the surplus oil output from the hydraulic pump 2 returns to the oil tank 1 through the first relief valve 14.
e. The second electromagnetic valve 6 is powered off, the valve core is reset and closed, oil is cut off from flowing into the hydro-pneumatic spring 3, the vehicle body stops rising, and at the moment, the excessive oil discharged by the hydraulic pump 2 returns to the oil tank 1 through the first overflow valve 14. Because the valve core of the second electromagnetic valve 6 adopts a cone valve structure, the structure is bidirectional non-return, so that the oil in the oil-gas spring 3 can not flow back, and the reliability of the position fixing of the suspension after the adjustment is finished is ensured. The first electromagnetic valve 5 is powered off, the valve core is reset, the P port is closed, and the A port is communicated with the O port; the residual pressure inside the circuits associated with port a and port O is released by returning to the tank 1 through the second relief valve 17.
f. After the posture of the vehicle is adjusted, the fourth electromagnetic valve 15 is powered off, and the valve core is reset; the oil returns to the oil tank 1 through the fourth electromagnetic valve 15 and the throttle valve 16. At this point the system is operating at idle pressure and the motor operating current is minimal, providing for the motor to be shut down.
g. The motor stops running, and the hydraulic pump 2 stops working; and the system operation is finished.
The descending process of the vehicle body comprises the following steps:
a. the second electromagnetic valve 6 is powered on, and the valve core is conducted; the hydro-pneumatic spring 3 discharges oil to the oil outlet under the action of the mass load of the vehicle body, the oil passes through the second electromagnetic valve 6 and sequentially passes through the fourth one-way valve 9, the flow control device, the third one-way valve 8, the first electromagnetic valve 5 and the second overflow valve 17 through pipelines, and finally flows into the oil tank 1 to realize the descent of the vehicle body.
The oil undergoes differential pressure compensation in the flow control device, that is, the oil is split into a first flow valve 11 and a second flow valve 12 through a third electromagnetic valve 13 and a pipeline respectively, and finally flows are merged into a third one-way valve 8 after being stabilized.
In addition, the oil in the loop is overflowed by the second overflow valve 17, so that the system establishes oil return back pressure, and the pressure plays a role in load balancing.
b. The third electromagnetic valve 13 is powered on, the valve core is closed, and the oil input of the first flow valve 11 is cut off; thereby correspondingly reducing the volume flow of the oil liquid backflow and realizing the descending speed adjusting function of the vehicle body.
c. After the posture of the vehicle is adjusted, the second electromagnetic valve 6 is powered off, the valve core is reset, the second electromagnetic valve 6 stops oil discharging, and the vehicle body stops descending. And the system operation is finished.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The suspension hydraulic system comprises a motor, an oil tank, a hydraulic pump, an oil return main pipe and an oil inlet main pipe, wherein the oil return main pipe and the oil inlet main pipe are connected with the oil tank, and the hydraulic pump is respectively connected with the motor and the oil inlet main pipe;
the rectifying component comprises a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve, a first electromagnetic valve and a flow control device;
the execution assembly comprises a second electromagnetic valve and an execution unit, and the second electromagnetic valve is connected with the execution unit;
the first check valve, the first electromagnetic valve, the flow control device and the second electromagnetic valve are sequentially connected in series through an oil way branch pipe, and the first electromagnetic valve is connected with an oil return main pipe;
the flow control device comprises a fluid inlet and a fluid outlet, the second one-way valve is arranged between the first electromagnetic valve and the fluid inlet, the third one-way valve is arranged between the first electromagnetic valve and the fluid outlet, the fourth one-way valve is arranged between the second electromagnetic valve and the fluid inlet, and the fifth one-way valve is arranged between the second electromagnetic valve and the fluid outlet;
the flow guiding directions of the second one-way valve and the third one-way valve are opposite, the flow guiding directions of the second one-way valve and the fifth one-way valve are consistent, and the flow guiding directions of the third one-way valve and the fourth one-way valve are consistent;
the flow control device comprises a first flow valve and a second flow valve which are connected in parallel through a pipeline;
the flow control device also comprises a third electromagnetic valve, and the third electromagnetic valve is connected with the first flow valve in series;
the valve core of the second electromagnetic valve adopts a cone valve structure.
2. The suspension hydraulic system of claim 1 further comprising a first relief valve, a fourth solenoid valve, and a throttle valve, said first relief valve being disposed between the hydraulic pump and the return manifold, said throttle valve being in series with the fourth solenoid valve, said fourth solenoid valve being connected to the hydraulic pump, said throttle valve being connected to the return manifold.
3. The suspension hydraulic system of claim 2 wherein the fairing assembly further includes a second relief valve disposed between the first solenoid valve and the return manifold.
4. The suspension hydraulic system of claim 3 wherein the actuator assembly further comprises a third relief valve, the third relief valve being in parallel with the second solenoid valve.
5. The suspension hydraulic system of claim 4 further comprising a pressure port coupled to the hydraulic pump.
6. The suspension hydraulic system of claim 5 further comprising a first pressure transmitter and a second pressure transmitter, the first pressure transmitter being connected in parallel with the pressure port, the second pressure transmitter being connected in parallel with the third relief valve.
7. A vehicle characterized by comprising a suspension hydraulic system according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016378.3A CN109515099B (en) | 2019-01-08 | 2019-01-08 | Suspension hydraulic system and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016378.3A CN109515099B (en) | 2019-01-08 | 2019-01-08 | Suspension hydraulic system and vehicle with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109515099A CN109515099A (en) | 2019-03-26 |
| CN109515099B true CN109515099B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910016378.3A Active CN109515099B (en) | 2019-01-08 | 2019-01-08 | Suspension hydraulic system and vehicle with same |
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| Country | Link |
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| CN (1) | CN109515099B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115416161A (en) * | 2022-10-14 | 2022-12-02 | 湖南中联重科新材料科技有限公司 | Spraying device and method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1049107A (en) * | 1964-06-16 | 1966-11-23 | Damic Controls Ltd | Improvements in hydro-pneumatic suspension systems |
| JPH04321418A (en) * | 1991-04-19 | 1992-11-11 | Tokico Ltd | Suspension control device |
| JPH0840035A (en) * | 1994-07-26 | 1996-02-13 | Mitsubishi Motors Corp | Hydraulic active suspension device |
| JP2001097017A (en) * | 1999-09-28 | 2001-04-10 | Hitachi Constr Mach Co Ltd | Vehicle height adjusting device of working vehicle |
| CN101412355A (en) * | 2008-11-27 | 2009-04-22 | 北京理工大学 | External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control |
| CN102673341A (en) * | 2012-06-07 | 2012-09-19 | 中国北方车辆研究所 | Modularized vehicle position regulating system |
| CN104369639A (en) * | 2014-09-23 | 2015-02-25 | 北京理工大学 | Wheel-type amphibious vehicle retractable type oil gas suspension system and control method |
| CN104401198A (en) * | 2014-09-23 | 2015-03-11 | 东北农业大学 | Active suspension system for hydraulic type vehicle |
| CN106567904A (en) * | 2016-11-10 | 2017-04-19 | 湖北航天技术研究院特种车辆技术中心 | Lifting hydro-pneumatic suspension hydraulic system |
-
2019
- 2019-01-08 CN CN201910016378.3A patent/CN109515099B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1049107A (en) * | 1964-06-16 | 1966-11-23 | Damic Controls Ltd | Improvements in hydro-pneumatic suspension systems |
| JPH04321418A (en) * | 1991-04-19 | 1992-11-11 | Tokico Ltd | Suspension control device |
| JPH0840035A (en) * | 1994-07-26 | 1996-02-13 | Mitsubishi Motors Corp | Hydraulic active suspension device |
| JP2001097017A (en) * | 1999-09-28 | 2001-04-10 | Hitachi Constr Mach Co Ltd | Vehicle height adjusting device of working vehicle |
| CN101412355A (en) * | 2008-11-27 | 2009-04-22 | 北京理工大学 | External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control |
| CN102673341A (en) * | 2012-06-07 | 2012-09-19 | 中国北方车辆研究所 | Modularized vehicle position regulating system |
| CN104369639A (en) * | 2014-09-23 | 2015-02-25 | 北京理工大学 | Wheel-type amphibious vehicle retractable type oil gas suspension system and control method |
| CN104401198A (en) * | 2014-09-23 | 2015-03-11 | 东北农业大学 | Active suspension system for hydraulic type vehicle |
| CN106567904A (en) * | 2016-11-10 | 2017-04-19 | 湖北航天技术研究院特种车辆技术中心 | Lifting hydro-pneumatic suspension hydraulic system |
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| CN109515099A (en) | 2019-03-26 |
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