CN220314644U - Piston accumulator for vehicle suspension system divided into high and low pressure chambers - Google Patents
Piston accumulator for vehicle suspension system divided into high and low pressure chambers Download PDFInfo
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- CN220314644U CN220314644U CN202321676785.5U CN202321676785U CN220314644U CN 220314644 U CN220314644 U CN 220314644U CN 202321676785 U CN202321676785 U CN 202321676785U CN 220314644 U CN220314644 U CN 220314644U
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- cylinder barrel
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- piston
- oil
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- 239000000725 suspension Substances 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 15
- 230000004323 axial length Effects 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 abstract description 11
- 238000013016 damping Methods 0.000 abstract description 9
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000007789 gas Substances 0.000 description 10
- 239000010720 hydraulic oil Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a piston accumulator for a vehicle suspension system divided into high and low pressure chambers, comprising: the cylinder barrel is provided with two cylinder covers which are respectively provided with vent holes and are connected with the upper end and the lower end of the cylinder barrel in a one-to-one correspondence manner, two pistons which are arranged in the cylinder barrel and divide the cylinder barrel into a low-pressure cavity, an oil cavity and a high-pressure cavity which are distributed up and down in sequence, two oil through holes which are arranged on the side wall of the cylinder barrel and are respectively communicated with the oil cavity, and two inflation valves which are connected with the vent holes in a one-to-one correspondence manner; one inflation valve at the upper side is communicated with the low-pressure cavity, and one inflation valve at the lower side is communicated with the high-pressure cavity. The piston type energy accumulator for the vehicle suspension system with the high-low pressure cavity has the advantages of enhancing buffering and damping effects and being good in buffering and damping performance.
Description
Technical Field
The utility model relates to the technical field of vehicle suspensions, in particular to a piston type energy accumulator for dividing a vehicle suspension system into high and low pressure chambers.
Background
The utility model of chinese patent application number CNCN201410422834.1 relates to a vehicle suspension system comprising: the hydraulic cylinder is connected between the wheel assembly and the vehicle body; a pressure adjusting unit; a hydraulic power unit; a hydraulic circuit which communicates the hydraulic cylinder, the pressure adjusting unit and the hydraulic power unit; an accumulator disposed in the hydraulic circuit; the time relay is electrically connected with the pressure adjusting unit and the hydraulic power unit; and the oil tank is communicated with the pressure regulating unit and the hydraulic power unit. The energy accumulator is a type of energy storage and release in a hydraulic system by utilizing the compressibility of gas, and can play a role in buffering and damping in the system when being used for a vehicle suspension system; when the suspension oil (hydraulic) cylinder bears load, hydraulic oil is pressed into the energy accumulator by the suspension oil cylinder piston under the pressure action, enters the oil cavity, pushes the energy accumulator piston, compresses nitrogen in the air cavity, increases the pressure in the air cavity along with the increase of the gas compression amount until the pressure is equal to the load, and plays a role in energy accumulation and buffering; when the load is reduced, the external pressure is reduced, compressed gas in the air cavity pushes the accumulator piston, hydraulic oil is discharged back to the suspension cylinder, and the suspension cylinder is reset. The traditional energy accumulator only has one air cavity, and has the defect of poor buffering and damping performance; therefore, designing a piston type energy accumulator with enhanced buffering and damping effects and better buffering and damping performance for dividing a vehicle suspension system into high and low pressure chambers becomes a problem to be solved urgently.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a piston type energy accumulator which has a better buffering and damping effect and is used for dividing a vehicle suspension system into high and low pressure chambers.
The specific technical scheme of the utility model is as follows:
a piston accumulator for a vehicle suspension system divided into high and low pressure chambers, comprising: the cylinder barrel is provided with two cylinder covers which are respectively provided with vent holes and are connected with the upper end and the lower end of the cylinder barrel in a one-to-one correspondence manner, two pistons which are arranged in the cylinder barrel and divide the cylinder barrel into a low-pressure cavity, an oil cavity and a high-pressure cavity which are distributed up and down in sequence, two oil through holes which are arranged on the side wall of the cylinder barrel and are respectively communicated with the oil cavity, and two inflation valves which are connected with the vent holes in a one-to-one correspondence manner; one inflation valve at the upper side is communicated with the low-pressure cavity, and one inflation valve at the lower side is communicated with the high-pressure cavity.
Preferably, the cylinder tube includes: the lower end of the connecting cylinder barrel is connected with the upper end of the connecting cylinder barrel, and the upper end of the connecting cylinder barrel is connected with the lower end of the connecting cylinder barrel; the inner diameter of the low-pressure cylinder barrel is equal to that of the high-pressure cylinder barrel, and the inner diameter of the low-pressure cylinder barrel and the inner diameter of the high-pressure cylinder barrel are respectively smaller than that of the connecting cylinder barrel; the piston positioned at the upper side is positioned in the low-pressure cylinder barrel, and the cylinder cover positioned at the upper side is connected with the upper end of the low-pressure cylinder barrel; the piston positioned at the lower side is positioned in the high-pressure cylinder barrel, and the cylinder cover positioned at the lower side is connected with the lower end of the high-pressure cylinder barrel; the two oil through holes are positioned in the middle parts of two opposite sides of the side wall of the connecting cylinder barrel and are respectively communicated with the oil cavity.
Preferably, the axial length of the low-pressure cylinder barrel is smaller than that of the high-pressure cylinder barrel; in the initial state, the low-pressure chamber is filled with nitrogen with the pressure of 2Mpa, and the high-pressure chamber is filled with nitrogen with the pressure of 8.5 Mpa.
Preferably, the cylinder further includes: two inner holes are sleeves of screw holes; the lower end of the low-pressure cylinder barrel and the upper end of the high-pressure cylinder barrel are respectively provided with a thread section; one sleeve is in threaded connection with the threaded section of the low-pressure cylinder barrel, the lower end of the sleeve is pressed against the upper end of the connecting cylinder barrel, the other sleeve is in threaded connection with the threaded section of the high-pressure cylinder barrel, and the upper end of the sleeve is pressed against the lower end of the connecting cylinder barrel; the inner diameter of the thread section is respectively larger than the outer diameter of the low-pressure cylinder barrel and the outer diameter of the high-pressure cylinder barrel; the external diameter of the sleeve is equal to the external diameter of the connecting cylinder barrel.
Preferably, the piston accumulator for a vehicle suspension system divided into high and low pressure chambers further comprises: two waterproof end covers which are arranged at the upper end of the low-pressure cylinder barrel and the lower end of the high-pressure cylinder barrel in a one-to-one correspondence manner; the waterproof end cover covers the cylinder cover and the inflation valve.
Preferably, an annular oil groove is formed in the outer periphery of the piston; the annular oil groove can store oil, plays the effect of oil blanket, improves the gas tightness, plays the effect of lubricated cylinder inner wall simultaneously, has reduced friction and has generated heat the loss to the sealing member.
Preferably, one end of the piston, which is far away from the oil cavity, is provided with a counter bore and a check ring groove positioned at the side wall of the counter bore; the retainer ring groove is used for placing the elastic retainer ring when the piston is dismounted, so that the dismounting convenience is improved.
Preferably, a sealing ring is arranged between the inflation valve and the vent hole; the sealing ring is an O-shaped sealing ring.
Compared with the prior art, the utility model has the beneficial effects that: the piston type energy accumulator for dividing the vehicle suspension system into high and low pressure chambers is provided with the low pressure chamber and the high pressure chamber, and an oil through hole of the energy accumulator is connected with a suspension oil cylinder through an oil pipe; when the vehicle is in no-load or light-load, hydraulic oil enters the oil cavity from the suspension oil cylinder through the oil through hole, and the hydraulic oil only pushes the piston in the low-pressure cavity to move due to the fact that the pressure is smaller at the moment, and the pressure in the low-pressure cavity is increased along with the increase of the gas compression quantity until the pressure is the same as the oil cavity; when the pressure is reduced, the pressure of the gas in the low-pressure cavity is higher than the pressure of the oil cavity, the gas pushes the piston of the low-pressure cavity, hydraulic oil is discharged out of the oil cavity, and the functions of energy storage, buffering and shock absorption are realized; when the vehicle is under heavy load or full load, the pressure of hydraulic oil in the oil cavity exceeds 8.5Mpa, at the moment, the hydraulic oil pushes the piston in the low-pressure cavity and the piston in the high-pressure cavity to move simultaneously, at the moment, the gas pressure of the low-pressure cavity and the gas pressure of the high-pressure cavity are higher, the vibration of the vehicle under heavy load or full load is faced, and the displacement distance of the piston under unit pressure is reduced compared with that of the piston under no-load and light load; through the mode that the piston in the low-pressure cavity works when the empty load is light and the piston in the low-pressure cavity works together with the piston in the high-pressure cavity when the heavy load is full, the whole suspension system is guaranteed to have approximately equal natural vibration frequency in the working process of the host machine, the buffering and damping effects are enhanced, and the buffering and damping performance is good. One sleeve of the cylinder barrel is in threaded connection with the threaded section of the low-pressure cylinder barrel, the lower end of the sleeve is abutted against the upper end of the connecting cylinder barrel, the other sleeve of the cylinder barrel is in threaded connection with the threaded section of the high-pressure cylinder barrel, the upper end of the sleeve is abutted against the lower end of the connecting cylinder barrel, the cylinder barrel positioning step in the original structure is achieved, the blanking size of the cylinder barrel is reduced, and the material cost is reduced. The two waterproof end covers are correspondingly arranged at the upper end of the low-pressure cylinder barrel and the lower end of the high-pressure cylinder barrel, cover the cylinder cover and the inflation valve, effectively prevent the problem of water accumulation of the cylinder cover in an open-air working environment, and reduce the potential safety hazards of rust and water inflow of the inflation valve port. The annular oil groove is formed in the piston, oil can be stored, the oil seal effect is achieved, the air tightness is improved, the inner wall of the cylinder barrel is lubricated, the loss of friction heating on a sealing element is reduced, the heat productivity is small during working, the normal working of the energy accumulator is not affected, and the service life of the energy accumulator is prolonged. The one end that the oil pocket was kept away from to the piston is equipped with the counter bore and is located the retaining ring groove of counter bore side wall, places circlip when the retaining ring groove is used for dismouting piston, improves dismouting maintenance convenience, also can avoid the too big sealing member turn-ups scheduling problem that leads to of exerting oneself during the dismouting. The sealing ring is arranged between the inflation valve and the vent hole for sealing, so that the air tightness of the inflation valve port is improved.
Drawings
FIG. 1 is a schematic view of a construction of the present utility model;
FIG. 2 is a schematic view of the construction of the cylinder head position;
fig. 3 is a schematic view of the structure of the piston position.
In the figure: the cylinder barrel 1, the low-pressure cylinder barrel 2, the high-pressure cylinder barrel 3, the vent hole 4, the cylinder cover 5, the inflation valve 6, the sealing ring 7, the low-pressure cavity 8, the oil cavity 9, the high-pressure cavity 10, the piston 11, the oil through hole 12, the waterproof end cover 13, the sleeve 14, the threaded section 15, the annular oil groove 16, the counter bore 17 and the check ring groove 18 are connected.
Detailed Description
The utility model is further described below with reference to the drawings.
As shown in fig. 1, fig. 2 and fig. 3: a piston accumulator for a vehicle suspension system divided into high and low pressure chambers, comprising: the cylinder consists of a connecting cylinder 1, a low-pressure cylinder 2 with the lower end welded with the upper end of the connecting cylinder 1 and a high-pressure cylinder 3 with the upper end welded with the lower end of the connecting cylinder 1, wherein the axial length of the low-pressure cylinder 2 is smaller than that of the high-pressure cylinder 3, the inner diameter of the low-pressure cylinder 2 is equal to that of the high-pressure cylinder 3, and the inner diameters of the low-pressure cylinder 2 and the high-pressure cylinder 3 are respectively smaller than that of the connecting cylinder 1; two cylinder covers 5 which are respectively provided with vent holes 4 and are in one-to-one corresponding screw connection with the upper end of the low-pressure cylinder barrel 2 and the lower end of the high-pressure cylinder barrel 3; two air charging valves 6 in one-to-one corresponding screw connection with the air vents 4 of the two cylinder covers 5, a sealing ring 7 is arranged between the air charging valves 6 and the air vents 4, and the sealing ring 7 is an O-shaped sealing ring; two pistons 11 dividing the cylinder barrel into a low-pressure cavity 8, an oil cavity 9 and a high-pressure cavity 10 which are sequentially distributed up and down, wherein one piston 11 positioned at the upper side is positioned in the low-pressure cylinder barrel 2, and one piston 11 positioned at the lower side is positioned in the high-pressure cylinder barrel 3; two oil through holes 12 which are arranged at the middle parts of two opposite sides of the side wall of the connecting cylinder barrel 1 and are respectively communicated with the oil cavity 9; two waterproof end covers 13 which are arranged at the upper end of the low-pressure cylinder barrel 2 and the lower end of the high-pressure cylinder barrel 3 in a one-to-one correspondence manner, wherein the waterproof end covers 13 cover the cylinder cover 5 and the inflation valve 6; one inflation valve 6 on the upper side communicates with the low pressure chamber 8 and one inflation valve 6 on the lower side communicates with the high pressure chamber 10. In the initial state, the low-pressure chamber 8 is filled with nitrogen with the pressure of 2Mpa, and the high-pressure chamber 10 is filled with nitrogen with the pressure of 8.5 Mpa.
The cylinder barrel also comprises: two sleeves 14 with inner holes of screw holes; the lower end of the low-pressure cylinder barrel 2 and the upper end of the high-pressure cylinder barrel 3 are respectively provided with a thread section 15; one sleeve 14 is in threaded connection with the threaded section 15 of the low-pressure cylinder barrel 2, the lower end of the sleeve 14 is pressed against the upper end of the connecting cylinder barrel 1, the other sleeve 14 is in threaded connection with the threaded section 15 of the high-pressure cylinder barrel 3, and the upper end of the sleeve 14 is pressed against the lower end of the connecting cylinder barrel 1; the inner diameter of the thread section 15 is respectively larger than the outer diameter of the low-pressure cylinder barrel 2 and the outer diameter of the high-pressure cylinder barrel 3; the outer diameter of the sleeve 14 is equal to the outer diameter of the connecting cylinder 1.
An annular oil groove 16 is formed in the outer periphery of the piston 11; the annular oil groove 16 can store oil, plays the effect of oil blanket, improves the gas tightness, plays the effect of lubricated cylinder inner wall simultaneously, has reduced friction and has generated heat the loss to the sealing member.
A counter bore 17 and a check ring groove 18 positioned at the side wall of the counter bore 17 are arranged at one end of the piston 11 far away from the oil cavity 9; the retainer groove 18 is used for placing the circlip when the piston 11 is assembled and disassembled, so that the convenience of assembly and disassembly is improved.
In addition to the above embodiments, the technical features or technical data of the present utility model may be rearranged and combined within the scope of the claims and the description of the present utility model to constitute new embodiments, which may be implemented without inventive effort by those skilled in the art, and thus, embodiments of the present utility model not described in detail should be considered as embodiments of the present utility model within the scope of the protection of the present utility model.
Claims (8)
1. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers, comprising: the cylinder barrel is characterized in that the piston type energy accumulator for the high-low pressure cavity of the vehicle suspension system further comprises: the cylinder cover is provided with vent holes respectively and is connected with the upper end and the lower end of the cylinder barrel in a one-to-one correspondence manner, the cylinder cover is provided with two low-pressure cavities which are arranged in the cylinder barrel and divide the cylinder barrel into upper and lower low-pressure cavities which are sequentially distributed, the piston is provided with an oil cavity and a high-pressure cavity, the piston is provided with two oil through holes which are arranged on the side wall of the cylinder barrel and are respectively communicated with the oil cavity, and the air charging valve is connected with the vent holes in a one-to-one correspondence manner.
2. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 1, wherein said cylinder includes: the lower end of the connecting cylinder barrel is connected with the upper end of the connecting cylinder barrel, and the upper end of the connecting cylinder barrel is connected with the lower end of the connecting cylinder barrel; the inner diameter of the low-pressure cylinder barrel is equal to that of the high-pressure cylinder barrel, and the inner diameter of the low-pressure cylinder barrel and the inner diameter of the high-pressure cylinder barrel are respectively smaller than that of the connecting cylinder barrel; the piston positioned at the upper side is positioned in the low-pressure cylinder barrel, and the cylinder cover positioned at the upper side is connected with the upper end of the low-pressure cylinder barrel; the piston positioned at the lower side is positioned in the high-pressure cylinder barrel, and the cylinder cover positioned at the lower side is connected with the lower end of the high-pressure cylinder barrel; the two oil through holes are positioned at the side wall of the connecting cylinder barrel and are respectively communicated with the oil cavity.
3. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 2, wherein the axial length of the low pressure cylinder is less than the axial length of the high pressure cylinder.
4. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 2 or 3, wherein said cylinder further comprises: two inner holes are sleeves of screw holes; the lower end of the low-pressure cylinder barrel and the upper end of the high-pressure cylinder barrel are respectively provided with a thread section; one sleeve is in threaded connection with the threaded section of the low-pressure cylinder barrel, the lower end of the sleeve is pressed against the upper end of the connecting cylinder barrel, the other sleeve is in threaded connection with the threaded section of the high-pressure cylinder barrel, and the upper end of the sleeve is pressed against the lower end of the connecting cylinder barrel; the inner diameter of the thread section is respectively larger than the outer diameter of the low-pressure cylinder barrel and the outer diameter of the high-pressure cylinder barrel.
5. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 2 or 3, further comprising: two waterproof end covers which are arranged at the upper end of the low-pressure cylinder barrel and the lower end of the high-pressure cylinder barrel in a one-to-one correspondence manner.
6. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 1, 2 or 3, wherein the piston is provided with an annular oil groove on the outer periphery thereof; the annular oil groove can store oil, plays the effect of oil blanket, improves the gas tightness, plays the effect of lubricated cylinder inner wall simultaneously, has reduced friction and has generated heat the loss to the sealing member.
7. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 1, 2 or 3, wherein the end of the piston remote from the oil chamber is provided with a counterbore and a retainer groove at the side of the counterbore.
8. A piston accumulator for a vehicle suspension system divided into high and low pressure chambers according to claim 1, 2 or 3, wherein a sealing ring is provided between the charging valve and the vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321676785.5U CN220314644U (en) | 2023-06-28 | 2023-06-28 | Piston accumulator for vehicle suspension system divided into high and low pressure chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321676785.5U CN220314644U (en) | 2023-06-28 | 2023-06-28 | Piston accumulator for vehicle suspension system divided into high and low pressure chambers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220314644U true CN220314644U (en) | 2024-01-09 |
Family
ID=89414911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321676785.5U Active CN220314644U (en) | 2023-06-28 | 2023-06-28 | Piston accumulator for vehicle suspension system divided into high and low pressure chambers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220314644U (en) |
-
2023
- 2023-06-28 CN CN202321676785.5U patent/CN220314644U/en active Active
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