CN112177989A - Hydraulic control device for hydro-pneumatic suspension mechanism of vehicle - Google Patents
Hydraulic control device for hydro-pneumatic suspension mechanism of vehicle Download PDFInfo
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- CN112177989A CN112177989A CN201911057320.XA CN201911057320A CN112177989A CN 112177989 A CN112177989 A CN 112177989A CN 201911057320 A CN201911057320 A CN 201911057320A CN 112177989 A CN112177989 A CN 112177989A
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- group
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- oil cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a hydraulic control device of a vehicle hydro-pneumatic suspension mechanism, which is used in the field of ultra-low plug-in semitrailers. The left valve group and the right valve group are connected by the master control system, the left valve group and the right valve group are connected with the comprehensive control system through electromagnetic valves and control valves, the left oil cylinder group and the left energy storage group are connected with the left valve group, the right oil cylinder group and the right energy storage group are connected with the right valve group, the left oil cylinder group and the right oil cylinder group are respectively provided with two oil cylinders, and each oil cylinder barrel is connected with a frame. The solenoid valve is a two-position two-way solenoid valve. The control valve is a damping valve, a throttle valve, a speed regulating valve or a proportional valve. After a whole vehicle descending control instruction is received, the main control system and the integrated control system control the left valve group and the right valve group to be disconnected, hydraulic oil in the left energy storage group and the right energy storage group is prevented from flowing out, the lifting oil way is controlled to be communicated, and hydraulic oil in the left oil cylinder group and the right oil cylinder group is controlled to flow back to the oil tank. The invention has the advantages of simple structure, convenient operation, higher control precision and low operation failure rate.
Description
Technical Field
The invention relates to a hydraulic control device of a vehicle hydro-pneumatic suspension mechanism, which is used in the field of ultra-low plug-in semitrailers.
Background
The ultra-low plug-in semi-trailer is a special vehicle for transporting goods such as plate materials, building materials and the like, and an oil-gas suspension mechanism of the semi-trailer is an important part of the vehicle. When the vehicle is in a running state, the mechanism plays a role in shock absorption; during the ascending or descending process of the vehicle, the mechanism realizes the loading and unloading of the cargos through the expansion and contraction of the self-suspended oil tank.
In the prior art, the control of the hydro-pneumatic suspension mechanism usually adopts an air bag type, a single oil cylinder type and a double oil cylinder type. Wherein, the lifting stroke of the air bag type mechanism is limited and is not easy to control; the single oil cylinder type mechanism has the risk of tube explosion of the oil cylinder. The double-oil-cylinder mechanism can also have the hidden troubles that the oil pipe is wound on the cylinder and the oil pipe is pulled apart, and the welding seam defect easily occurs at the welding part of the cylinder.
Disclosure of Invention
The invention aims to provide a hydraulic control device of a vehicle hydro-pneumatic suspension mechanism, which can effectively meet the requirement of a lifting stroke and reliably ensure the safe operation of a hydraulic oil cylinder and a pressure pipeline.
The hydraulic control device of the vehicle hydro-pneumatic suspension mechanism is designed and comprises an execution component and an attached component, wherein one end of a master control system is connected with a left valve group, and the left valve group is connected with one end of a comprehensive control system through an electromagnetic valve and a control valve; the other end of the master control system is connected with a right valve group, and the right valve group is connected with the other end of the comprehensive control system through an electromagnetic valve and a control valve; the left oil cylinder group and the left energy storage group are respectively connected with the left valve group, the right oil cylinder group and the right energy storage group are respectively connected with the right valve group, the left oil cylinder group and the right oil cylinder group are respectively provided with two oil cylinders, and the cylinder barrel of each oil cylinder is connected and positioned with the frame; after a whole vehicle descending control instruction is received, the master control system and the integrated control system respectively control the left valve group and the right valve group to be disconnected so as to prevent hydraulic oil in the left energy storage group and the right energy storage group from flowing out, and simultaneously control the lifting oil circuit to be conducted so as to control the hydraulic oil in the left oil cylinder group and the right oil cylinder group to flow back to the oil tank. The electromagnetic valve is a two-position two-way electromagnetic valve. The control valve is one of a damping valve, a throttle valve, a speed regulating valve or a proportional valve.
The beneficial technical effects of the invention are as follows: because the left oil cylinder group and the right oil cylinder group are respectively provided with two oil cylinders, the lifting stroke of the suspension system is increased, and the accident potential of pipe explosion of the oil cylinders is reduced. Meanwhile, because the cylinder barrels of the oil cylinders are independently connected and positioned with the frame, on one hand, the limited cylinder barrels cannot be wound by an oil pipe of a hydraulic pipeline, and on the other hand, the connection and positioning mode between the cylinder barrels is cancelled, so that the possible connection defects between the cylinder barrels are avoided. In addition, the master control system and the integrated control system are respectively connected with the oil cylinder through the electromagnetic valve and the control valve, and the integrated control system can also be directly connected with the oil cylinder, so that effective hydraulic control can be realized. The invention also has the advantages of simple structure, convenient operation, higher control precision and low operation failure rate.
Drawings
FIG. 1 is a block diagram of the architecture;
fig. 2 is a component arrangement diagram.
In the figure, the device comprises an execution component 1, an attachment component 2, a main control system 3, a comprehensive control system 4, a left oil cylinder group 5, a right oil cylinder group 6, a right oil cylinder group 7, a left valve group 8, a right valve group 9, a left energy storage group 10, a right energy storage group 11, oil cylinders 12, electromagnetic valves 13, control valves 14, energy accumulators 15, an oil pump 16, an oil tank 17 and a storage battery.
Detailed Description
The invention will be further explained in two parts with reference to the embodiments provided in the drawings.
First portion, component structure.
The embodiment comprises the following steps: an execution component (1), an attachment component (2);
the execution unit (1) includes: the system comprises a main control system (3), a comprehensive control system (4), a left oil cylinder group (5), a right oil cylinder group (6), a left valve group (7), a right valve group (8), a left energy storage group (9), a right energy storage group (10), an oil cylinder (11), an electromagnetic valve (12), a control valve (13) and an energy accumulator (14);
the attachment part (2) comprises: an oil pump (15), an oil tank (16) and a storage battery (17).
And a second part, operating the running process.
The left valve group (7) and the right valve group (8) are respectively connected with the left oil cylinder group (5), the right oil cylinder group (6), the left energy storage group (9) and the right energy storage group (10), and the master control system (3) is respectively connected with the comprehensive control system (4), the left valve group (7), the right valve group (8) and the attached component (2).
The master control system (3) is respectively connected with the comprehensive control system (4), the left valve group (7) and the right valve group (8), when a descending instruction of the whole vehicle is received, the electromagnetic valves (12) in the left valve group (7) and the right valve group (8) are controlled to be switched off to prevent hydraulic oil in the energy accumulators (14) of the left energy accumulation group (9) and the right energy accumulation group (10) from flowing out, namely hydraulic oil in the energy accumulators (14) of the left energy accumulation group (9) and the right energy accumulation group (10) flows into the oil cylinder (11) or the hydraulic oil tank (16), and the comprehensive control system (4) is controlled to be switched on to enable the hydraulic oil in the oil cylinder (11) to flow back to the hydraulic oil tank (16).
The whole vehicle descending refers to the descending of the vehicle body of the ultra-low insertion type semi-trailer from the running height to the loading or unloading height. The control system (4) can be an on-off control valve, when the main control system (3) controls the on-off control valve to be switched off, the oil cylinder (11) and the oil tank (16) are switched off, and at the moment, hydraulic oil in the oil cylinder (11) cannot flow into the oil tank (16). When the main control system (3) controls the on-off control valve to be conducted, the oil cylinder (11) and the oil tank (16) are conducted, and at the moment, hydraulic oil in the oil cylinder (11) flows into the oil tank (16).
The left valve group (7) and the right valve group (8) have the effects that when the master control system (3) controls the electromagnetic valves (12) in the left valve group (7) and the right valve group (8) to be disconnected, the left energy storage group (9) and the right energy storage group (10) are disconnected with the oil cylinder (11) and the oil tank (16), and the oil levels of hydraulic oil in the energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) are kept unchanged. Namely, the on-off of a pipeline between the oil cylinder (11) and the oil tank (16) is controlled by controlling the on-off of the comprehensive control system (4), and the on-off of the pipeline between the left energy storage group (9), the right energy storage group (10) and the oil cylinder (11) is controlled by controlling the on-off of the electromagnetic valves (12) of the left valve group (7) and the right valve group (8). The on-off of pipelines among the left energy storage group (9), the right energy storage group (10) and the oil tank (16) is controlled by controlling the on-off of the comprehensive control system (4), the left valve group (7) and the right valve group (8).
In the descending process of the whole vehicle, the electromagnetic valves (12) of the left valve group (7) and the right valve group (8) are disconnected, pipelines between the left energy storage group (9) and the right energy storage group (10) and the oil tank (16) are cut off, and the energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) are not decompressed, so that the oil levels of hydraulic oil in the left energy storage group (9) and the right energy storage group (10) are kept unchanged. Therefore, on one hand, the pressure relief time of the left energy storage group (9) and the right energy storage group (10) is saved, and the effect of improving the efficiency is achieved; on the other hand, in the subsequent vehicle ascending process, the time for charging the left energy storage group (9) and the right energy storage group (10) is reduced, and the time for ascending the whole vehicle is further shortened. Meanwhile, the hydraulic energy stored in the left energy storage group (9) and the right energy storage group (10) in the descending process of the whole vehicle is utilized to enable the whole vehicle to ascend, so that the energy-saving purpose is achieved, namely, the left energy storage group (9) and the right energy storage group (10) are prevented from participating in actions in the descending process of the whole vehicle, hydraulic oil in the left energy storage group (9) and the right energy storage group (10) is prevented from flowing back to the oil tank (16), and the energy storage purpose is achieved. The hydraulic oil reserved in the left energy storage group (9) and the right energy storage group (10) provides power with certain energy for the subsequent whole vehicle in the ascending process, so that energy is saved, and the efficiency is improved.
Considering that three conditions exist in the whole vehicle ascending process, the first condition is that the whole vehicle runs in full load, then descends and unloads the vehicle in full load, and then ascends in the whole vehicle, namely the whole vehicle ascends in no load; the second situation is that the whole vehicle runs from no-load to no-load descending for loading, and then the whole vehicle ascends, namely the whole vehicle ascends in full load; the third case is when the weight carried by the driving condition is between empty and full.
When the vehicle is in a full-load and stable running state of the whole vehicle, the oil levels of hydraulic oil in the left energy storage group (9) and the right energy storage group (10) are the highest. Therefore, compared with the prior art, in the full-load descending and unloading process, the electromagnetic valves (12) of the left valve group (7) and the right valve group (8) are controlled to be switched off, pipelines between the left energy storage group (9), the right energy storage group (10) and the oil tank (16) are cut off, so that the oil levels of hydraulic oil in the left energy storage group (9) and the right energy storage group (10) are kept unchanged, at the moment, the maximum energy is reserved in the descending process of the whole vehicle, in the following no-load ascending process of the vehicle, the no-load ascending of the whole vehicle can be finished by directly controlling the hydraulic oil reserved in the left energy storage group (9) and the right energy storage group (10) to flow into the oil cylinder (11), the oil pump (15) is not required to be started to consume the energy of the storage battery (17), the left energy storage group (9) and the right energy storage group (10) are pressurized through the comprehensive control system (4), and the pressurizing, thereby shortening the lifting time of the whole vehicle.
The control process of the no-load rise of the whole vehicle is as follows:
in the no-load ascending process of the whole vehicle, the main control system (3) controls the electromagnetic valves (12) of the left valve group (7) and the right valve group (8) to be conducted, so that hydraulic oil in the left energy storage group (9) and the right energy storage group (10) flows into the oil cylinder (11), and controls the comprehensive control system (4) to be disconnected so as to prevent the hydraulic oil in the left energy storage group (9) and the right energy storage group (10) from flowing into the oil tank (16).
The whole vehicle no-load ascending refers to that the vehicle body of the ultra-low position plug-in semitrailer ascends to the running height from the unloading height, in the whole vehicle no-load ascending process, hydraulic oil flowing into the oil cylinder (11) from the left energy storage group (9) and the right energy storage group (10) provides power for the whole vehicle ascending of the ultra-low position plug-in semitrailer, the power of the storage battery (17) is consumed without starting the oil pump (15), the left energy storage group (9) and the right energy storage group (10) are charged through the comprehensive control system (4), the charging time of the left energy storage group (9) and the right energy storage group (10) is saved, and the ascending time of the whole vehicle is further shortened.
The control process of the full load descending of the whole vehicle is as follows:
in the full-load descending process of the whole vehicle, the comprehensive control system (4) is conducted, hydraulic oil in the oil cylinder (11) automatically flows into the oil tank (16) through the comprehensive control system (4) and the oil pump (15), and the oil cylinder (11) is automatically decompressed, so that a carriage and goods are automatically descended. Meanwhile, the electromagnetic valves (12) of the left valve group (7) and the right valve group (8) are disconnected, and hydraulic oil in the left energy storage group (9) and the right energy storage group (10) cannot flow into the oil cylinder (11) and the oil tank (16). At the moment, the piston stroke of the oil cylinder (11) is changed greatly, and hydraulic oil in the energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) is prevented from flowing back to the oil tank (16) by disconnecting the electromagnetic valves (12) of the left valve group (7) and the right valve group (8), so that energy waste is avoided, and an energy-saving effect is achieved. Meanwhile, in the descending process of the whole vehicle, the situation that the energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) are completely decompressed is not required to be waited, so that the descending time of the whole vehicle is shortened.
After unloading is finished, in the process of no-load ascending of the whole vehicle, electromagnetic valves (12) of a left valve group (7) and a right valve group (8) are conducted, hydraulic oil in energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) flows into an oil cylinder (11) through the left energy storage group (9) and the right energy storage group (10), so that the pressure of the left energy storage group (9) and the right energy storage group (10) is stably released under the control of a control valve (13), the energy loss of a storage battery (17) is reduced, automatic pressure accumulation of the oil cylinder (11) is realized, and a carriage is automatically ascended. Meanwhile, the comprehensive control system (4) is disconnected, and hydraulic oil in the energy accumulators (14) of the left energy accumulation group (9) and the right energy accumulation group (10) cannot flow into the oil tank (16). Considering the process that the hydraulic oil in the left energy storage group (9) and the right energy storage group (10) flows into the oil cylinder (11), and keeping the stability of the whole vehicle in the lifting process, a control valve (13) is respectively connected in series in the left valve group (7) and the right valve group (8). The electromagnetic valves (12) in the left energy storage group (9) and the right energy storage group (10) are disconnected under the control of the main control system (3) to prevent hydraulic oil in the left energy storage group (9) and the right energy storage group (10) from flowing into the oil cylinder (11) or the oil tank (16), or are switched on under the control of the main control system (3) to enable the hydraulic oil in the left energy storage group (9) and the right energy storage group (10) to flow into the oil cylinder (11). Consider that during driving, if the solenoid valve (12) is in a conducting state, and the control valve (13) connected in series with the solenoid valve (12) is in an operating state. At this time, once bumping occurs, the control valve (13) controls the flow rate of the hydraulic oil flowing into the oil cylinder (11), thereby affecting the damping effect of the hydro-pneumatic suspension device during driving. Based on the situation, a left valve group (7) and a right valve group (8) are respectively arranged on the left energy storage group (9) and the right energy storage group (10), and the left valve group (7) and the right valve group (8) are respectively provided with an electromagnetic valve (12) and a control valve (13) which are connected in series.
The control process of the master control system (3):
when the ultra-low-position plug-in type semi-trailer is in a running state, the electromagnetic valves (12) in the left energy storage group (9) and the right energy storage group (10) are controlled to be disconnected, namely, one way of the control valve (12) is disconnected when the ultra-low-position plug-in type semi-trailer is in a normal running process, and at the moment, even if a bumping condition occurs in the running process, the oil-gas suspension device can be ensured to have a good damping effect;
after a finished automobile descending control instruction is received, the electromagnetic valves (12) in the left energy storage group (9) and the right energy storage group (10) are controlled to be disconnected, namely, all pipelines between the left energy storage group (9) and the right energy storage group (10) and the comprehensive control system (4) and the oil cylinder (11) are disconnected in the finished automobile descending process, and hydraulic oil in the left energy storage group (9) and the right energy storage group (10) is prevented from flowing into the oil cylinder (11) or the oil tank (16).
After a finished automobile lifting control instruction is received, the electromagnetic valves (12) in the left energy storage group (9) and the right energy storage group (10) are controlled to be conducted, namely, in the lifting process of the finished automobile, hydraulic oil in the energy accumulators (14) of the left energy storage group (9) and the right energy storage group (10) flows into the oil cylinder (11) through the control valve (13), so that the flow rate of the hydraulic oil flowing into the oil cylinder (11) is controlled through the control valve (13), and the lifting stability of the finished automobile is improved.
The electromagnetic valves (12) in the left energy storage group (9) and the right energy storage group (10) are connected in series with the control valve (13), wherein the electromagnetic valves (12) are two-position two-way electromagnetic valves, and the control valve (13) is a one-way throttle valve, a speed regulating valve or a proportional valve. The ultra-low-position plug-in type semitrailer is in a normal driving process, the control electromagnetic valve (12) and the comprehensive control system (4) are disconnected, and therefore the oil-gas suspension device can be guaranteed to have a good damping effect even if bumping occurs in the driving process. Meanwhile, in the lifting process of the whole vehicle, the flow rate of hydraulic oil flowing into the oil cylinder (11) can be controlled, and the lifting stability of the whole vehicle is improved.
Claims (3)
1. The hydraulic control device for the hydro-pneumatic suspension mechanism of the vehicle is composed of an execution component (1) and an attached component (2), and is characterized in that: one end of the main control system (3) is connected with a left valve group (7), and the left valve group (7) is connected with one end of the comprehensive control system (4) through an electromagnetic valve (12) and a control valve (13); the other end of the master control system (3) is connected with a right valve group (8), and the right valve group (8) is connected with the other end of the comprehensive control system (4) through an electromagnetic valve (12) and a control valve (13); the left oil cylinder group (5) and the left energy storage group (9) are respectively connected with a left valve group (7), the right oil cylinder group (6) and the right energy storage group (10) are respectively connected with a right valve group (8), the left oil cylinder group (5) and the right oil cylinder group (6) are respectively provided with two oil cylinders (11), and the cylinder barrel of each oil cylinder (11) is connected with the frame for positioning; after a whole vehicle descending control instruction is received, the main control system (3) and the comprehensive control system (4) respectively control the left valve group (7) and the right valve group (8) to be disconnected so as to prevent hydraulic oil in the left energy storage group (9) and the right energy storage group (10) from flowing out, and simultaneously control the lifting oil circuit to be conducted so as to control hydraulic oil in the left oil cylinder group (5) and the right oil cylinder group (6) to flow back to the oil tank (16).
2. The hydraulic control device for hydro-pneumatic suspension mechanism of vehicle as claimed in claim 1, wherein: the electromagnetic valve (12) is a two-position two-way electromagnetic valve.
3. The hydraulic control device for hydro-pneumatic suspension mechanism of vehicle as claimed in claim 1, wherein: the control valve (13) is one of a damping valve, a throttle valve, a speed regulating valve or a proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911057320.XA CN112177989A (en) | 2019-11-01 | 2019-11-01 | Hydraulic control device for hydro-pneumatic suspension mechanism of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911057320.XA CN112177989A (en) | 2019-11-01 | 2019-11-01 | Hydraulic control device for hydro-pneumatic suspension mechanism of vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112177989A true CN112177989A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911057320.XA Pending CN112177989A (en) | 2019-11-01 | 2019-11-01 | Hydraulic control device for hydro-pneumatic suspension mechanism of vehicle |
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| CN (1) | CN112177989A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857206A (en) * | 2022-07-06 | 2022-08-05 | 太原理工大学 | Active control vibration reduction system and method based on electro-hydraulic compound cylinder |
-
2019
- 2019-11-01 CN CN201911057320.XA patent/CN112177989A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857206A (en) * | 2022-07-06 | 2022-08-05 | 太原理工大学 | Active control vibration reduction system and method based on electro-hydraulic compound cylinder |
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