CN213501726U - Vehicle hydro-pneumatic suspension system - Google Patents
Vehicle hydro-pneumatic suspension system Download PDFInfo
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- CN213501726U CN213501726U CN202022014783.2U CN202022014783U CN213501726U CN 213501726 U CN213501726 U CN 213501726U CN 202022014783 U CN202022014783 U CN 202022014783U CN 213501726 U CN213501726 U CN 213501726U
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Abstract
The utility model provides a vehicle oil gas suspension system, including left oil gas suspension jar, right oil gas suspension jar, axle and frame, left side oil gas suspension jar, right oil gas suspension jar both ends are connected respectively on axle and frame, are connected with left energy storage ware on the left side oil gas suspension jar, are connected with right energy storage ware on the right side oil gas suspension jar, and the rodless chamber of having the pole chamber of left side oil gas suspension jar through the rodless chamber of valve A connection right oil gas suspension jar, and the rodless chamber of left side oil gas suspension jar passes through the pole chamber that has of valve B connection right oil gas suspension jar. Adopt the utility model discloses, switching and resistance through valve A and valve B are adjusted, have realized the changeable operation of the operation operating mode of vehicle, cross-country operating mode, the operating mode of traveling fast. Furthermore, the valve A and the valve B are three-position two-way electromagnetic directional valves, and an upper oil port and a lower oil port of each three-position two-way electromagnetic directional valve are connected through an electro-hydraulic proportional control valve.
Description
Technical Field
The utility model relates to a vehicle car appearance adjustment technical field, concretely relates to vehicle oil gas suspension system.
Background
When engineering machinery vehicles such as a wheel type hydraulic excavator, a crane and a bulldozer are actually used, 3 working conditions generally exist: 1. the working condition is that the vehicle runs at a low speed and has a large load, the connection rigidity of the frame and the axle is required to be large, the shaking amplitude is reduced as much as possible, and the accuracy and the stability of the operation are ensured; 2. in the cross-country working condition, the vehicle has high running speed and violent road shock, and the flexibility between the vehicle frame and the vehicle axle is required to be as large as possible, so that the vehicle body is prevented from being excessively inclined; 3. the working condition of driving fast, the vehicle load is little, and is fast, and the road surface is flat, needs the damping system compliance between speed regulation frame and the axle, improves the travelling comfort and the stability fast. The existing oil-gas suspension system of the special wheel type hydraulic excavator is mainly designed aiming at the operation working condition, and the three working conditions are not unified. Chinese patent publication No. CN203864384U discloses an independent hydro-pneumatic suspension, which comprises a frame, a hydraulic cylinder connected to the frame, an axle connected to the hydraulic cylinder, and an accumulator connected to the hydraulic cylinder via a hydraulic oil path, so as to adjust the height of the vehicle body. The independent hydro-pneumatic suspension still fails to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a vehicle oil gas suspension system.
The utility model discloses a following technical scheme can realize.
The utility model provides a vehicle oil gas suspension system, including left oil gas suspension jar, right oil gas suspension jar, axle and frame, left side oil gas suspension jar, right oil gas suspension jar both ends are connected respectively on axle and frame, are connected with left energy storage ware on the left side oil gas suspension jar, are connected with right energy storage ware on the right side oil gas suspension jar, and the rodless chamber B that has the pole chamber A of left side oil gas suspension jar passes through valve A and connects right oil gas suspension jar, and the rodless chamber A of left side oil gas suspension jar passes through the pole chamber B that has that valve B connects right oil gas suspension jar.
When the vehicle works, the valve A and the valve B are closed, the left oil-gas suspension cylinder and the right oil-gas suspension cylinder are isolated from each other, the compressibility of oil is negligible under load, and the vehicle frame and the vehicle axle are connected in a rigid manner, so that the stability is guaranteed; when in off-road working condition, the valve A and the valve B are completely opened, taking the example that the left side is subjected to larger shock, the piston rod of the left oil gas suspension cylinder moves upwards, the pressure of the cavity at the upper part of the piston is increased, and oil flows into the cavity at the lower part of the piston of the right oil gas suspension cylinder through the valve A with the minimum resistance, so that the piston of the right oil gas suspension cylinder moves upwards, the inclination angle of the vehicle body is prevented from being too large, and the stability of the vehicle frame is kept; under the working condition of fast running, the opening degrees of the valve A and the valve B are adjusted to adjust resistance, so that the flexibility between the vehicle frame and the vehicle axle is adjusted, and the vehicle runs stably and comfortably. By opening and closing the valve A and the valve B and adjusting resistance, the unified design and switchable operation of the operation working condition, the off-road working condition and the rapid running working condition of the vehicle are realized.
At least one of the valve A and the valve B is a three-position two-way electromagnetic directional valve. And furthermore, an upper oil port and a lower oil port of the three-position two-way electromagnetic directional valve are connected through an electro-hydraulic proportional control valve.
The upper oil port and the lower oil port are two oil ports on the double oil port side of the three-position two-way electromagnetic directional valve, and belong to common knowledge.
The three-position two-way electromagnetic directional valve is adopted, the opening and closing of the upper oil port or the lower oil port are selectively controlled through an electric signal, when the opened oil way is connected with the electro-hydraulic proportional control valve in series, the resistance of the oil way is adjusted through the electro-hydraulic proportional control valve, so that rigid connection corresponding to an operation working condition, flexible connection corresponding to a cross-country working condition and adjustable resistance connection corresponding to a quick running working condition are realized, the three connections are switched with each other, and the convenience of control is improved.
Furthermore, the electro-hydraulic proportional control valves are all electro-hydraulic proportional overflow valves with the same model. Further, the type of the valve A is the same as that of the valve B.
The lower ends of the left oil-gas suspension cylinder and the right oil-gas suspension cylinder are hinged with the axle through piston rods, and the upper ends of the left oil-gas suspension cylinder and the right oil-gas suspension cylinder are hinged with the frame through a shell.
The left hydro-pneumatic suspension cylinder and the right hydro-pneumatic suspension cylinder are of the same type.
The left energy accumulator and the right energy accumulator are liquid-gas separated energy accumulators.
The left energy accumulator and the right energy accumulator are of the same type. The symmetry of the performance of the left end and the right end of the system is guaranteed.
The beneficial effects of the utility model reside in that:
to sum up, adopt the utility model discloses, switching and resistance through valve A and valve B are adjusted, have realized the changeable operation of the operation operating mode of vehicle, cross-country operating mode, the operating mode of traveling fast.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a detailed view of the connection mode of the three-position two-way electromagnetic directional valve.
In the figure: 1-left hydro-pneumatic suspension cylinder; 101-rodless cavity a; 102-rod chamber a; 2-right hydro-pneumatic suspension cylinder; 201-rodless cavity B; 202-rod chamber B; 3-valve A; 4-valve B; 5-a left accumulator; 6-right accumulator; 7-vehicle bridge; 8-a frame; 9-an electro-hydraulic proportional control valve; 11-a middle oil port; 12-upper oil port; 13-lower oil port.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, the structure of the present invention is schematically illustrated:
the utility model provides a vehicle oil gas suspension system, including left oil gas suspension jar 1, right oil gas suspension jar 2, axle 7 and frame 8, left side oil gas suspension jar 1, right oil gas suspension jar 2 both ends are connected respectively on axle 7 and frame 8, are connected with left energy storage ware 5 on the left side oil gas suspension jar 1, are connected with right energy storage ware 6 on the right side oil gas suspension jar 2, and left side oil gas suspension jar 1 has pole chamber A102 to connect right oil gas suspension jar 2's no pole chamber B201 through valve A3, and left side oil gas suspension jar 1 has pole chamber B202 through valve B4 connection right oil gas suspension jar 2's no pole chamber A101.
When the automobile is in an operating condition, the valve A3 and the valve B4 are closed, the left hydro-pneumatic suspension cylinder 1 and the right hydro-pneumatic suspension cylinder 2 are isolated from each other, the compressibility of oil is negligible under load, and the automobile frame 8 and the axle 7 are connected in a rigid manner, so that the stability is guaranteed; when in off-road working condition, the valve A3 and the valve B4 are completely opened, taking the example that the left side is subjected to larger shock, the piston rod of the left oil-gas suspension cylinder moves upwards, the pressure of the cavity at the upper part of the piston is increased, and oil flows into the cavity at the lower part of the piston of the right oil-gas suspension cylinder 2 through the valve A3 with the minimum resistance, so that the piston of the right oil-gas suspension cylinder 2 moves upwards, the overlarge inclination angle of the vehicle body is prevented, and the stability of the vehicle frame 8 is kept; in the fast driving condition, the opening degrees of the valve A3 and the valve B4 are adjusted to adjust the resistance, so that the flexibility between the vehicle frame 8 and the vehicle axle 7 is adjusted, and the vehicle runs smoothly and comfortably. By opening and closing the valve A3 and the valve B4 and adjusting resistance, the unified design and switchable operation of the working condition, the off-road working condition and the fast running working condition of the vehicle are realized.
At least one of the valve A3 and the valve B4 is a three-position two-way electromagnetic directional valve. Further, as shown in fig. 2, a detailed connection mode of the three-position two-way electromagnetic directional valve is shown, and an upper oil port 12 and a lower oil port 13 of the three-position two-way electromagnetic directional valve are connected through an electro-hydraulic proportional control valve 9.
The structure of the three-position two-way electromagnetic directional valve belongs to the common knowledge and is provided with a single oil port side and a double oil port side, wherein a connecting port on the single oil port side is a middle oil port 11, and two connecting ports on the double oil port side are an upper oil port 12 and a lower oil port 13 respectively.
The three-position two-way electromagnetic directional valve is adopted, the opening and closing of the upper oil port 12 or the lower oil port 13 are selectively controlled through an electric signal, when an opened oil way is connected with the electro-hydraulic proportional control valve 9 in series, the resistance of the oil way is adjusted through the electro-hydraulic proportional control valve 9, so that rigid connection corresponding to an operation working condition, flexible connection corresponding to a cross-country working condition and adjustable resistance connection corresponding to a quick running working condition are achieved, the three connections are switched with each other, and the convenience of control is improved.
Further, the electro-hydraulic proportional control valves 9 are all electro-hydraulic proportional overflow valves of the same type. Further, the valve a3 and the valve B4 are of the same type.
The lower ends of the left hydro-pneumatic suspension cylinder 1 and the right hydro-pneumatic suspension cylinder 2 are hinged with an axle 7 through piston rods, and the upper ends of the left hydro-pneumatic suspension cylinder and the right hydro-pneumatic suspension cylinder are hinged with a frame 8 through a shell.
The left hydro-pneumatic suspension cylinder 1 and the right hydro-pneumatic suspension cylinder 2 are of the same type.
The left energy accumulator 5 and the right energy accumulator 6 are liquid-gas separated energy accumulators.
The left energy accumulator 5 and the right energy accumulator 6 are of the same type. The symmetry of the performance of the left end and the right end of the system is guaranteed.
Claims (9)
1. A vehicle oil gas suspension system which characterized in that: the automobile suspension device comprises a left oil-gas suspension cylinder (1), a right oil-gas suspension cylinder (2), an axle (7) and a vehicle frame (8), wherein two ends of the left oil-gas suspension cylinder (1) and the right oil-gas suspension cylinder (2) are respectively connected to the axle (7) and the vehicle frame (8), the left oil-gas suspension cylinder (1) is connected with a left energy accumulator (5), the right oil-gas suspension cylinder (2) is connected with a right energy accumulator (6), a rod cavity A (102) of the left oil-gas suspension cylinder (1) is connected with a rodless cavity B (201) of the right oil-gas suspension cylinder (2) through a valve A (3), and a rodless cavity A (101) of the left oil-gas suspension cylinder (1) is connected with a rod cavity B (202) of the right oil-gas suspension cylinder (2) through a valve B (4.
2. The vehicle hydro-pneumatic suspension system of claim 1, wherein: at least one of the valve A (3) and the valve B (4) is a three-position two-way electromagnetic directional valve.
3. The vehicle hydro-pneumatic suspension system of claim 2, wherein: an upper oil port (12) and a lower oil port (13) of the three-position two-way electromagnetic directional valve are connected through an electro-hydraulic proportional control valve (9).
4. The vehicle hydro-pneumatic suspension system of claim 3, wherein: the electro-hydraulic proportional control valves (9) are all electro-hydraulic proportional overflow valves of the same type.
5. The vehicle hydro-pneumatic suspension system of claim 2, wherein: the type of the valve A (3) is the same as that of the valve B (4).
6. The vehicle hydro-pneumatic suspension system of claim 1, wherein: the lower ends of the left oil-gas suspension cylinder (1) and the right oil-gas suspension cylinder (2) are hinged with the axle (7) through piston rods, and the upper ends of the left oil-gas suspension cylinder and the right oil-gas suspension cylinder are hinged with the frame (8) through a shell.
7. The vehicle hydro-pneumatic suspension system of claim 1, wherein: the left hydro-pneumatic suspension cylinder (1) and the right hydro-pneumatic suspension cylinder (2) are of the same type.
8. The vehicle hydro-pneumatic suspension system of claim 1, wherein: the left energy accumulator (5) and the right energy accumulator (6) are liquid-gas separated energy accumulators.
9. The vehicle hydro-pneumatic suspension system of claim 1, wherein: the left energy accumulator (5) and the right energy accumulator (6) are of the same type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022014783.2U CN213501726U (en) | 2020-09-15 | 2020-09-15 | Vehicle hydro-pneumatic suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022014783.2U CN213501726U (en) | 2020-09-15 | 2020-09-15 | Vehicle hydro-pneumatic suspension system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213501726U true CN213501726U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022014783.2U Active CN213501726U (en) | 2020-09-15 | 2020-09-15 | Vehicle hydro-pneumatic suspension system |
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| Country | Link |
|---|---|
| CN (1) | CN213501726U (en) |
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2020
- 2020-09-15 CN CN202022014783.2U patent/CN213501726U/en active Active
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