CN107143604B - Automatic regulating valve of shock absorber and stepped oil discharging method thereof - Google Patents
Automatic regulating valve of shock absorber and stepped oil discharging method thereof Download PDFInfo
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- CN107143604B CN107143604B CN201710512373.0A CN201710512373A CN107143604B CN 107143604 B CN107143604 B CN 107143604B CN 201710512373 A CN201710512373 A CN 201710512373A CN 107143604 B CN107143604 B CN 107143604B
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/267—Combination of a sliding valve and a lift valve
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1226—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston the fluid circulating through the piston
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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
- F16F2230/00—Purpose; Design features
- F16F2230/06—Fluid filling or discharging
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an automatic regulating valve of a shock absorber and a stepped oil discharging method thereof, wherein the regulating valve comprises an oil discharging copper piston, an oil discharging column, a conical oil discharging needle and a regulating valve base; the upper end of the regulating valve base is fixed with an upper pressing plate, the upper pressing plate and the lower pressing plate are enclosed to form a cavity, the oil discharging column is arranged in the cavity, a piston spring is arranged in the oil discharging column, the oil discharging copper piston is placed in the oil discharging column, and the lower part of the oil discharging copper piston is sleeved in the piston spring; an oil discharge needle spring is arranged in the oil discharge copper piston, and the conical oil discharge needle is sleeved in the oil discharge needle spring; the upper end of the oil drainage copper piston is provided with a first oil drainage hole matched with the conical part of the conical oil drainage needle; a plurality of second oil discharge holes are uniformly formed in the outer wall of the oil discharge column. The invention enables the regulating valve to realize a step type oil discharge mode, and achieves the effect of autonomous regulation; and therefore, hydraulic oil can be effectively discharged outwards, and sufficient resistance required by descending of the shaft and the suspension piston can be ensured.
Description
Technical Field
The invention relates to the technical field of shock absorbers, in particular to an automatic regulating valve of a shock absorber and a stepped oil discharging method thereof.
Background
In general, shock absorbers are designed to support the weight of a vehicle body and to suppress and prevent the transmission of vibration from a road surface to the vehicle body, contribute to the improvement of ride comfort, and protect the loaded goods and various components of the vehicle.
Such a shock absorber includes a cylinder filled with oil, a piston rod connected to a vehicle body for reciprocating motion, and a piston valve connected to a lower end of the piston rod, and oil that moves within the cylinder and controls the operation.
Its hydraulic oil of structure on the present market can not carry out effectual outer row, and in addition, the vehicle is running the in-process and is met speed low road surface unevenness time, and the vehicle can not reach steady comfortable effect.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides the automatic regulating valve of the shock absorber and the stepped oil discharging method thereof, and the automatic regulating valve can achieve a real automatic regulating mode through stepped oil discharging.
In order to achieve the purpose, the invention provides an automatic regulating valve of a shock absorber, which comprises an oil drainage copper piston, an oil drainage column, a conical oil drainage needle and a regulating valve base, wherein the oil drainage copper piston is connected with the oil drainage column; the upper end of the regulating valve base is fixed with an upper pressing sheet, the upper pressing sheet and the lower pressing sheet enclose to form a cavity, the oil discharging column is arranged in the cavity, a piston spring is arranged in the oil discharging column, the oil discharging copper piston is placed in the oil discharging column, and the lower part of the oil discharging copper piston is sleeved in the piston spring; an oil discharge needle spring is arranged in the oil discharge copper piston, and the conical oil discharge needle is sleeved in the oil discharge needle spring;
the upper end of the oil drainage copper piston is provided with a first oil drainage hole matched with the conical part of the conical oil drainage needle; a plurality of second oil discharge holes are uniformly formed in the outer wall of the oil discharge column;
when the damping shaft penetrates through the suspended valve plate piston and moves downwards, after the hydraulic oil pressure punches the first oil discharge hole, the conical oil discharge needle moves downwards and the conical part of the conical oil discharge needle leaves the first oil discharge hole, the first oil discharge hole in the oil discharge copper piston is opened for oil discharge, and first step oil discharge is carried out;
when the oil pressure in the inner cylinder increases, the oil pressure is also applied to the oil drain copper piston, the oil amount discharged by the conical oil discharge needle reaches the limit after the oil drain copper piston receives larger pressure, so that the whole oil drain copper piston descends in the oil discharge column after receiving larger pressure, and the oil discharge of the second step is opened by the second oil discharge hole of the oil discharge column.
The second oil drainage holes form a plurality of circles of oil drainage hole groups, and the plurality of circles of oil drainage hole groups are sequentially distributed on the outer wall of the oil drainage column from top to bottom; in the oil discharging process, the oil discharging hole groups are sequentially opened from top to bottom according to the sequential increase of oil pressure.
An oil storage groove is arranged in the lower end of the oil drainage column, and the size of a notch of the oil storage groove is smaller than the size of the lower end of the oil drainage copper piston; the oil drain copper piston can move downwards in the piston spring to be in contact with the notch of the oil storage groove.
The periphery of the upper end of the oil drain copper piston is outwards provided with a limiting block for limiting the descending position of the oil drain copper piston, and the diameter of the limiting block is larger than or equal to that of the piston spring.
The lower end of the regulating valve base is fixed with a spring seal base, and a piston base is installed in the lower end of the oil drain copper piston.
The upper end of the oil drainage column is provided with an extension column which is integrally formed with the oil drainage column, and the upper pressing sheet extends to be fixed in the extension column.
The upper pressing piece is internally provided with a through hole, and a joint rod which can be contacted with the upper end face of the oil drainage copper piston is arranged in the through hole; and the joint rod is connected with the damping shaft.
The outer surface of the upper pressing sheet is sequentially sleeved with a piston descending tower spring and a plurality of oil supplementing valve plates from top to bottom.
In order to achieve the above object, the present invention further provides a stepped oil discharge method of an autonomous control valve of a shock absorber, in which when the shock absorber operates, a part of hydraulic oil in an internal pressure must be discharged to an external cylinder due to a change in hydraulic oil pressure in the internal cylinder;
when the speed of the vehicle is low in the running process and the road surface is not big, after the force generated by the downward oil pressure in the inner cylinder acts on the first oil discharge hole, the conical oil drain needle moves downward and the conical part of the conical oil drain needle leaves the first oil discharge hole, the first oil discharge hole in the oil drain copper piston is opened for oil discharge, and the first step oil discharge is carried out;
along with the change of the vehicle speed and the road condition, when the oil pressure in the inner cylinder is increased, the oil pressure also acts on the oil drainage copper piston; after receiving great pressure, the oil mass that the toper oil discharge needle was arranged has reached the limit to the oil drain copper piston for whole oil drain copper piston receives behind the great pressure, descends in the oil discharge post, opens the oil extraction of second ladder by the second oil drain hole of oil discharge post.
The second oil drainage holes form a plurality of circles of oil drainage hole groups, and the plurality of circles of oil drainage hole groups are sequentially distributed on the outer wall of the oil drainage column from top to bottom; in the oil discharging process, the oil discharging hole groups are opened from top to bottom in sequence according to the sequentially increased oil pressure; the larger the oil pressure is, the more the number of turns of the opened oil drain hole group is.
The invention has the beneficial effects that: compared with the prior art, the autonomous regulating valve of the shock absorber and the stepped oil discharging method thereof have the advantages that the oil discharging copper piston is arranged in the oil discharging column of the regulating valve, the conical oil discharging needle is arranged in the oil discharging copper piston, and first-step oil discharging is realized through the matching of the conical oil discharging needle and the oil discharging copper piston in the descending process; and oil discharge of the second step is realized through the oil discharge column. The improvement of the structure enables the regulating valve to realize a step type oil discharging mode, and the effect of automatic regulation is achieved; therefore, hydraulic oil can be effectively discharged, and sufficient resistance required by descending of the shaft and the suspension piston can be ensured.
Drawings
FIG. 1 is a cross-sectional view of the self-regulating valve of the shock absorber of the present invention.
The main element symbols are as follows:
10. the oil drain device comprises an oil drain copper piston 11, an oil drain column 12, a conical oil drain needle 13, an adjusting valve base 14, an upper pressing plate 15, a piston spring 16, an oil drain needle spring 17, a spring sealing base 18, a joint rod 19, a piston descending tower spring 20, an oil supplementing valve plate 21, a piston base 101, a first oil drain hole 102, a limiting block 111, a second oil drain hole 112, an oil storage groove 113 and an extension column.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the self-regulating valve of a shock absorber provided by the present invention includes an oil drain copper piston 10, an oil drain column 11, a tapered oil drain needle 12, and a regulating valve base 13; the upper end of the regulating valve base is fixed with an upper pressing sheet 14, the upper pressing sheet and the lower pressing sheet enclose to form a cavity, an oil discharging column is arranged in the cavity, a piston spring 15 is arranged in the oil discharging column, an oil discharging copper piston is arranged in the oil discharging column, and the lower part of the oil discharging copper piston is sleeved in the piston spring; an oil drain needle spring 16 is arranged in the oil drain copper piston, and a conical oil drain needle is sleeved in the oil drain needle spring;
the upper end of the oil drainage copper piston is provided with a first oil drainage hole 101 matched with the conical part of the conical oil drainage needle; a plurality of second oil discharge holes 111 are uniformly formed in the outer wall of the oil discharge column;
when the damping shaft penetrates through the suspended valve plate piston and moves downwards, after the hydraulic oil pressure punches the first oil discharge hole, the conical oil discharge needle moves downwards and the conical part of the conical oil discharge needle leaves the first oil discharge hole, the first oil discharge hole in the oil discharge copper piston is opened for oil discharge, and first step oil discharge is carried out;
when the oil pressure in the interior jar increased, the oil pressure was used in the oil drain copper piston equally, and oil drain copper piston is after receiving great pressure, and the oil mass that the toper oil extraction needle was arranged has arrived the limit for whole oil drain copper piston receives behind the great pressure, and is down in the oil drainage post, opens the oil extraction of second ladder by the second oil drain hole of oil drainage post.
In this embodiment, the second oil drainage holes form a plurality of circles of oil drainage hole groups, and the plurality of circles of oil drainage hole groups are sequentially distributed on the outer wall of the oil drainage column from top to bottom; in the oil discharging process, the oil discharging hole groups are sequentially opened from top to bottom according to the sequential increase of oil pressure. The structure design ensures that the opening amount of the second oil discharge hole in the oil discharge column is completely determined by the oil pressure generated in the inner cylinder when the shaft and the suspended valve plate piston move downwards; the larger the oil pressure is, the more the number of turns of the opened oil drain hole group is.
In this embodiment, an oil storage groove 112 is disposed in the lower end of the oil drainage column 11, and the size of the notch of the oil storage groove is smaller than the size of the lower end of the oil drainage copper piston; the oil drain copper piston can move downwards in the piston spring to be contacted with the notch of the oil storage groove. The oil storage groove is arranged in the oil discharging column, so that the copper hole type piston is well protected from being impacted with the bottom of the oil discharging column when moving downwards, the hole type oil discharging copper piston is ensured to be contacted with an oil surface in the oil storage groove, a buffering effect is achieved, and the oil discharging copper piston is not damaged by impact.
In this embodiment, a limiting block 102 for limiting the descending position of the oil drain copper piston 10 is outwardly disposed on the periphery of the upper end of the oil drain copper piston, and the diameter of the limiting block is greater than or equal to that of the piston spring. The oil discharge spring in the regulating valve is easy to deform and shorten in the long-term compression process, and a limiting block is set, so that the oil discharge spring can only be sprung to be in contact with the lower end of the limiting block at most; so that the bearing limit of the machine is not exceeded during operation and the machine can normally operate within the bearing range.
In this embodiment, a spring seal seat 17 is fixed to the lower end of the regulator valve seat 13, and a piston seat 21 is installed in the lower end of the oil drain copper piston. The upper end of the oil drainage column is provided with an extension column which is integrally formed with the oil drainage column, and the upper pressing sheet extends to be fixed in the extension column 113. A through hole is arranged in the upper pressing sheet, and a joint rod 18 which can be contacted with the upper end surface of the oil drainage copper piston is arranged in the through hole; and the connecting rod is connected with the damping shaft. The outer surface of the upper pressing sheet is sequentially sleeved with a piston descending tower spring 19 and a plurality of oil supplementing valve plates 20 from top to bottom, and the oil supplementing valve plates are closed in the ascending process and opened in the descending process.
In order to achieve the above object, the present invention further provides a stepped oil discharge method of an autonomous control valve of a shock absorber, in which when the shock absorber operates, a part of hydraulic oil in an internal pressure must be discharged to an external cylinder due to a change in hydraulic oil pressure in the internal cylinder;
when the speed of a vehicle is low in the running process and the road surface is not smooth, after a force generated by downward oil pressure in the inner cylinder acts on the first oil discharge hole, the conical oil drain needle moves downward and the conical part of the conical oil drain needle leaves the first oil discharge hole, the first oil discharge hole in the oil drain copper piston is opened for oil discharge, and first step oil discharge is carried out;
along with the change of the vehicle speed and the road condition, when the oil pressure in the inner cylinder is increased, the oil pressure also acts on the oil drainage copper piston; after receiving great pressure, the oil mass that toper oil drain needle was arranged has arrived the limit to the oil drain copper piston for whole oil drain copper piston receives behind the great pressure, and is down in the oil drain post, opens the oil extraction of second ladder by the second oil extraction hole of oil drain post.
The second oil drain holes form a plurality of circles of oil drain hole groups, and the plurality of circles of oil drain hole groups are sequentially distributed on the outer wall of the oil drain column from top to bottom; in the oil discharging process, the oil discharging hole groups are sequentially opened from top to bottom according to the sequential enlargement of oil pressure; the larger the oil pressure is, the more the number of turns of the opened oil drain hole group is.
Compared with the situation of the prior art, the autonomous regulating valve of the shock absorber and the stepped oil discharging method thereof have the advantages that the oil discharging copper piston is arranged in the oil discharging column of the regulating valve, the conical oil discharging needle is arranged in the oil discharging copper piston, and first-step oil discharging is realized through the matching of the conical oil discharging needle and the oil discharging copper piston in the descending process; and oil discharge of the second step is realized through the oil discharge column. The improvement of the structure ensures that the regulating valve realizes a step type oil discharging mode and achieves the effect of automatic regulation; therefore, hydraulic oil can be effectively discharged, and sufficient resistance required by descending of the shaft and the suspension piston can be ensured.
The two-step oil discharge of the regulating valve is specifically as follows: the invention designs a step type oil discharge mode, wherein an oil discharge hole in a lower hole type copper piston of a conical oil discharge needle in a hole type copper piston in an autonomous regulating valve is opened for oil discharge, and the design is mainly designed for ensuring the stability and comfort of a vehicle when the speed of the vehicle is low and the road surface is not large. The oil discharge device is only the first step of the automatic regulating valve in the oil discharge process, at the moment, the force generated by the downward oil pressure in the inner cylinder only acts on the hole type copper piston, so that the cylindrical spring in the conical oil discharge needle of the copper piston is pressed downward, the conical oil discharge needle is opened downward, and oil is discharged moderately. The oil pressure in the inner cylinder is increased along with the change of the vehicle speed and the road condition, the oil discharge amount of the conical oil discharge needle in the same piston cannot meet the requirement at the moment, when the oil pressure in the inner cylinder is increased, the oil pressure also acts on the hole type piston, and after the copper piston is subjected to larger pressure, the oil discharge amount discharged by the conical oil discharge needle reaches the limit, so that the whole hole type copper piston descends in an oil discharge column after being subjected to larger pressure, and the oil discharge of the second step is started.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be considered by those skilled in the art are intended to fall within the scope of the present invention.
Claims (8)
1. An automatic regulating valve of a shock absorber is characterized by comprising an oil drainage copper piston, an oil drainage column, a conical oil drainage needle and a regulating valve base; the upper end of the regulating valve base is fixed with an upper pressing sheet, the upper pressing sheet and the lower pressing sheet enclose to form a cavity, the oil discharging column is arranged in the cavity, a piston spring is arranged in the oil discharging column, the oil discharging copper piston is placed in the oil discharging column, and the lower part of the oil discharging copper piston is sleeved in the piston spring; an oil discharge needle spring is arranged in the oil discharge copper piston, and the conical oil discharge needle is sleeved in the oil discharge needle spring;
the upper end of the oil drain copper piston is provided with a first oil drain hole matched with the conical part of the conical oil drain needle; a plurality of second oil discharge holes are uniformly formed in the outer wall of the oil discharge column;
when the damping shaft penetrates through the suspended valve plate piston and moves downwards, after the hydraulic oil pressure punches the first oil discharge hole, the conical oil discharge needle moves downwards and the conical part of the conical oil discharge needle leaves the first oil discharge hole, the first oil discharge hole in the oil discharge copper piston is opened for oil discharge, and first step oil discharge is carried out;
when the oil pressure in the inner cylinder is increased, the oil pressure also acts on the oil drainage copper piston, and after the oil drainage copper piston is subjected to higher pressure, the oil quantity drained by the conical oil drainage needle reaches the limit, so that the whole oil drainage copper piston descends in the oil drainage column after being subjected to higher pressure, and the oil drainage of a second step is started through a second oil drainage hole of the oil drainage column;
an oil storage groove is arranged in the lower end of the oil drainage column, and the size of a notch of the oil storage groove is smaller than the size of the lower end of the oil drainage copper piston; the oil drain copper piston can move downwards in the piston spring to be in contact with the notch of the oil storage groove.
2. The self-regulating valve of a shock absorber according to claim 1, wherein said second plurality of drain holes form a plurality of sets of drain holes, and the plurality of sets of drain holes are distributed on the outer wall of the drain post in sequence from top to bottom; in the oil discharging process, the oil discharging hole groups are sequentially opened from top to bottom according to the sequential increase of oil pressure.
3. The autonomous regulating valve of a shock absorber according to claim 1, characterized in that a limiting block for limiting the downward position of the oil drain copper piston is arranged outwards from the periphery of the upper end of the oil drain copper piston, and the diameter of the limiting block is greater than or equal to the diameter of the piston spring.
4. The autonomous regulating valve for shock absorbers according to claim 1, characterized in that a spring seal seat is fixed to the lower end of the regulating valve seat, and a piston seat is installed in the lower end of the oil drain copper piston.
5. The self-regulating valve of a shock absorber according to claim 1, wherein the upper end of the oil drainage column is provided with an extension column integrally formed therewith, and the upper pressing plate extends to be fixed in the extension column.
6. The self-regulating valve of a shock absorber according to claim 5, wherein a through hole is arranged in the upper pressing sheet, and an engaging rod which can be contacted with the upper end surface of the oil-discharging copper piston is arranged in the through hole; and the connecting rod is connected with the damping shaft.
7. The automatic regulating valve of the shock absorber according to claim 5, wherein the outer surface of the upper pressure plate is sleeved with a piston descending tower spring and an oil compensating valve plate from top to bottom in sequence.
8. The stepped oil discharge method for an automatic control valve of a shock absorber according to any one of claims 1 to 7, wherein a part of hydraulic oil in an inner pressure must be discharged to an outer cylinder due to a change in the hydraulic oil pressure in the inner cylinder when the shock absorber is in operation;
when the speed of the vehicle is low in the running process and the road surface is not big, after the force generated by the downward oil pressure in the inner cylinder acts on the first oil discharge hole, the conical oil drain needle moves downward and the conical part of the conical oil drain needle leaves the first oil discharge hole, the first oil discharge hole in the oil drain copper piston is opened for oil discharge, and the first step oil discharge is carried out;
along with the change of the vehicle speed and the road condition, when the oil pressure in the inner cylinder is increased, the oil pressure also acts on the oil drainage copper piston; after the oil drainage copper piston is subjected to larger pressure, the oil quantity discharged by the conical oil discharge needle reaches the limit, so that the whole oil drainage copper piston descends in the oil discharge column after being subjected to larger pressure, and the oil discharge of the second step is opened by a second oil discharge hole of the oil discharge column;
the second oil drain holes form a plurality of circles of oil drain hole groups, and the plurality of circles of oil drain hole groups are sequentially distributed on the outer wall of the oil drain column from top to bottom; in the oil discharging process, the oil discharging hole groups are sequentially opened from top to bottom according to the sequential enlargement of oil pressure; the larger the oil pressure is, the more the number of turns of the opened oil drain hole group is.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512373.0A CN107143604B (en) | 2017-06-29 | 2017-06-29 | Automatic regulating valve of shock absorber and stepped oil discharging method thereof |
| PCT/CN2017/106974 WO2019000719A1 (en) | 2017-06-29 | 2017-10-20 | Automatic regulating valve of shock absorber and multistep oil drainage method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512373.0A CN107143604B (en) | 2017-06-29 | 2017-06-29 | Automatic regulating valve of shock absorber and stepped oil discharging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143604A CN107143604A (en) | 2017-09-08 |
| CN107143604B true CN107143604B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710512373.0A Active CN107143604B (en) | 2017-06-29 | 2017-06-29 | Automatic regulating valve of shock absorber and stepped oil discharging method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN107143604B (en) |
| WO (1) | WO2019000719A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143604B (en) * | 2017-06-29 | 2023-02-28 | 黄永宁 | Automatic regulating valve of shock absorber and stepped oil discharging method thereof |
| CN108757810B (en) * | 2018-08-10 | 2020-08-07 | 上海曼杰汽车精密零部件有限公司 | Vibration damper |
| CN112196932B (en) * | 2020-09-25 | 2022-04-22 | 中国直升机设计研究所 | Throttle valve for buffer |
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| CN107143604A (en) | 2017-09-08 |
| WO2019000719A1 (en) | 2019-01-03 |
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