CN110319142B - Piston valve of self-adaptive damping shock absorber - Google Patents
Piston valve of self-adaptive damping shock absorber Download PDFInfo
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- CN110319142B CN110319142B CN201910567896.4A CN201910567896A CN110319142B CN 110319142 B CN110319142 B CN 110319142B CN 201910567896 A CN201910567896 A CN 201910567896A CN 110319142 B CN110319142 B CN 110319142B
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- shock absorber
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- valve body
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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
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
- F16F9/3482—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body the annular discs being incorporated within the valve or piston body
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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
- F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
- F16F9/3484—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by features of the annular discs per se, singularly or in combination
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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
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
- F16F9/5126—Piston, or piston-like valve elements
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a piston valve of a self-adaptive damping shock absorber, which comprises a shock absorber cylinder barrel, a piston rod and a valve body assembly, wherein the piston rod is fixedly arranged in the center of the shock absorber cylinder barrel; the valve body assembly is positioned in the shock absorber cylinder barrel and divides the shock absorber cylinder barrel into an upper cavity and a lower cavity, and a damping hole for connecting the upper cavity and the lower cavity is formed in the valve body assembly; the opening degree of the damping hole is in direct proportion to the displacement of the valve body assembly from the initial position. Has the advantages that: the piston valve can automatically adjust the damping according to the pressure difference of the cylinder barrels of the upper shock absorber and the lower shock absorber of the shock absorber; the invention has the advantages of simple structure, strong practicability, wide application range and convenient installation, disassembly and debugging.
Description
Technical Field
The invention relates to a valve body structure, in particular to a piston valve of a self-adaptive damping shock absorber, and belongs to the field of automobile parts.
Background
In general, in order to accelerate the attenuation of the vibration of the vehicle frame and the vehicle body to improve the smoothness and comfort of the vehicle during running, a shock absorber is installed inside the suspension system of most vehicles. The damping system of the automobile is composed of a spring and a damper. The shock absorber is not intended to support the weight of the vehicle body, but is intended to suppress the vibration of the spring when it is rebounded after absorbing the shock and to absorb the energy of the road surface impact. The spring serves to moderate the shock, and the damper gradually damps the vibration. The rebound of the spring cannot be controlled without the shock absorber, the automobile can generate serious bounce when encountering a rugged road, and the tire grip force and tracking property can be lost due to the up-and-down oscillation of the spring when the automobile bends over.
Chinese patent 2011207109559.10 relates to a multistage damping piston valve of automobile shock absorber, and the piston body overlaps in the tip of connecting rod, and the inboard is spacing by spacing retaining ring, and the outside is fixed by fastening nut, is equipped with circulation valve spring and circulation valve block between spacing retaining ring and the piston body, and the connecting rod end is equipped with adjusting nut, establishes ties in proper order between piston body and the adjusting nut and is equipped with the cover and locates outside fastening nut doublestage low-speed damping valve, circlip, belleville spring group and gasket. The F-V recovery damping characteristic curve of the conventional hydraulic shock absorber is expanded into five sections from three sections of working areas, so that the multistage damping force characteristic of the shock absorber is realized. However, the device has disadvantages in that: the piston valve components are more, the structure is more complex, the coordination work among all stages of valve plates is difficult to achieve the theoretical effect, and the recovery damping characteristic curve is not smooth enough, so that the instant of the adjustment and switching of all stages can generate larger impact, and the stability of the shock absorber is influenced.
Chinese patent 2013113410777.3 relates to a piston valve of a shock absorber, which can simultaneously exhibit a variable damping force effect based on a frequency domain of vibration or impact transmitted to the shock absorber and a variable damping force effect based on pressure when a vehicle is running, but the piston valve is configured such that a main valve unit is combined with a lower end of a piston rod, the main valve unit is divided into an expansion chamber and a compression chamber, and a frequency sensing unit is further provided at one side of the main valve unit, so that the diameter of an outer cylinder is increased to be suitable for each assembly, and the pretightening force of a spring of the piston valve cannot be adjusted, thereby reducing the trial range. Secondly the main valve unit structure is complicated, and the trompil is great, when it receives great instantaneous impact, can cause the piston rod tip to rock, influences the damping effect, and the intensity requirement of structure is difficult to be satisfied simultaneously.
Chinese patent 2013110347010.7 discloses an automobile shock absorber piston valve, wherein the upper and lower end faces of the piston valve on the shock absorber piston rod are provided with valve system gasket groups, the diameter, thickness, number and size of holes or notches of the valve system gasket groups and the arrangement sequence of the gaskets are controlled to control the magnitude of the damping force, the coordination requirements on the size, size and number of each component are high, and meanwhile, the damping adjustment range is not wide, so that the requirements of practical application are difficult to meet.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems of complex structure, insufficient structural strength, narrow damping adjustment range and the like in the prior art, the invention provides the piston valve of the self-adaptive damping shock absorber, and the piston valve has the characteristics of simple structure, strong practicability, wide application range and the like.
The technical scheme is as follows: a piston valve of a self-adaptive damping shock absorber comprises a shock absorber cylinder barrel, a piston rod and a valve body assembly, wherein the piston rod is fixedly arranged in the center of the shock absorber cylinder barrel, the valve body assembly is arranged on the piston rod, and the valve body assembly can move up and down along the axis direction of the piston rod; the valve body assembly is positioned in the shock absorber cylinder barrel and divides the shock absorber cylinder barrel into an upper cavity and a lower cavity, and a damping hole for connecting the upper cavity and the lower cavity is formed in the valve body assembly; the opening degree of the damping hole is in direct proportion to the displacement of the valve body assembly from the initial position.
When the shock absorber works, the larger the external force action is, the larger the offset of the valve body assembly is, the larger the opening degree of the damping hole is, so that the damping of the shock absorber is reduced, when the external force action is reduced, the offset of the valve body assembly is also reduced, the opening degree of the damping hole is also reduced, so that the damping of the shock absorber is increased, the damping range of the shock absorber is wider, and the shock absorption process is smooth.
Preferably, in order to improve the damping effect, the valve body assembly comprises a valve core and a valve sleeve, the valve core is positioned in the valve sleeve, and the valve core moves along with the valve sleeve and rotates relatively; the valve sleeve comprises a valve seat and a valve cover, the valve seat and the valve cover are respectively provided with through holes with the same quantity, size and shape, and the vertical direction projections of the through holes on the valve seat and the valve cover are completely overlapped; the valve core is provided with an initial damping hole and an adjusting damping hole, the initial damping hole is communicated with the through holes in the valve seat and the valve cover in an initial state, the adjusting damping hole is communicated with the through holes in the valve seat and the valve cover after the valve core rotates for a certain angle, and the larger the rotation angle is, the larger the opening degree of the adjusting damping hole is.
The upper cavity and the lower cavity of the shock absorber are communicated through the initial damping hole of the valve body assembly, when the shock absorber has an external force, oil flows to the cavity on the low-pressure side through the initial damping hole under the action of pressure difference, when the external force is increased, the deviation of the valve body assembly is increased, the rotation angle of the valve core is increased, the adjusting damping hole is connected, the flow of the oil is increased, the damping is reduced, and the larger the rotation angle is, the larger the opening of the adjusting damping hole is, the smaller the damping is; and conversely, when the external force action is reduced, the opening of the valve core reset damping hole is reduced, and the damping is increased.
The distribution, size, shape and number of the through holes formed in the valve seat and the valve cover can be designed according to requirements.
Preferably, in order to enable the opening degree of the damping hole to be uniformly increased along with the increase of the rotation angle of the valve core, the through holes in the valve seat and the valve cover are fan-shaped holes. The damping hole is adjusted along with the rotation of the valve core and is connected into the shock absorber through the fan-shaped hole, so that the opening degree of the damping hole is increased.
Preferably, in order to increase the damping adjustment range, the valve seat and the valve cover are provided with at least two fan-shaped holes, and the central axes of the fan-shaped holes are coincident with the central axis of the valve sleeve. The opening adjusting range of the damping holes can be effectively enlarged by arranging the plurality of fan-shaped holes on the valve seat and the valve cover.
Preferably, in order to increase the opening range of the adjusting damping holes, when the number of the adjusting damping holes is more than or equal to 2, the opening of the adjusting damping holes is adjusted by the number of the communicated adjusting damping holes; when the number of the adjusting damping holes is one, the opening of the adjusting damping holes is adjusted through the size of the communicated adjusting damping holes. The distribution, size, shape and number of the damping holes can be designed according to the requirement.
Preferably, in order to realize the rotation of the valve core relative to the valve sleeve and the up-and-down motion of the whole valve body assembly, a valve body mounting part is arranged on the piston rod, the valve body mounting part is of a spiral rod piece structure, and inner threads matched with the outer threads of the spiral rod piece are arranged on the inner ring of the valve core; the valve body installation part is provided with a clamping groove along the axis direction, and the valve sleeve inner ring is provided with a plurality of convex parts corresponding to the clamping groove in quantity along the axis direction.
The valve sleeve comprises a valve seat, a valve cover, a clamping groove, a plurality of groups of clamping grooves and a plurality of groups of protruding parts, wherein the protruding parts of the inner ring of the valve sleeve slide in the clamping grooves, the valve sleeve slides up and down along the direction of the clamping grooves, the quantity of the clamping grooves and the number of the protruding parts are at least one pair, the relative positions of the valve seat and the valve cover can be unified through the pair of clamping grooves and the protruding parts, the valve sleeve can move more stably through the.
The valve core rotates along with the up-and-down movement of the valve body installation part under the matching action of the spiral rod piece and the internal threads, and the valve sleeve and the valve core synchronously move up and down because the valve core is positioned in the valve sleeve, and the valve core rotates relative to the valve sleeve, so that the control of the opening degree of the damping hole is realized.
Preferably, in order to realize the resetting of the valve body assembly, an upper reset spring and a lower reset spring are respectively arranged above and below the valve body assembly. When the external force does not act, the valve body assembly returns to the initial state under the action of the return spring.
Preferably, in order to conveniently adjust the overall initial position of the valve body, one end of each of the upper return spring and the lower return spring is provided with an adjusting nut, and the other end of each of the upper return spring and the lower return spring is provided with a check ring. The adjusting nut is installed on the piston rod, the return spring is compressed by rotating the adjusting nut, and the valve body assembly is adjusted up and down along the piston rod under the action of the return spring.
Preferably, in order to conveniently adjust the overall initial position of the valve body, two ends of the upper return spring and two ends of the lower return spring are respectively provided with an adjusting nut. Set up adjusting nut at reset spring both ends and can adjust the initial position with valve body assembly that prepares more fast.
Preferably, in order to improve the vibration reduction effect, a sealing ring is arranged between the valve sleeve and the inner wall of the cylinder barrel of the vibration absorber, and the sealing ring is arranged on the valve sleeve. The upper cavity and the lower cavity of the shock absorber cylinder barrel can be effectively isolated through the arrangement of the sealing ring, and oil liquid is guaranteed to flow in the upper cavity and the lower cavity through the damping holes.
Has the advantages that: the piston valve can automatically adjust the damping according to the pressure difference of the cylinder barrels of the upper shock absorber and the lower shock absorber of the shock absorber; the invention has the advantages of simple structure, strong practicability, wide application range and convenient installation, disassembly and debugging.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the valve body assembly of the present invention;
FIG. 3 is a cross-sectional view of a valve body mounting portion on a piston rod of the present invention;
FIG. 4 is a schematic view of the valve body assembly of the present invention in an initial state;
FIG. 5 is a schematic view of the valve spool rotation 30 ︒ of the present invention;
FIG. 6 is a schematic view of the valve core rotation 60 ︒ of the present invention;
FIG. 7 is a schematic view of the valve spool rotation 90 ︒ of the present invention;
fig. 8 is a schematic structural view of an embodiment of an adjusting nut of the present invention.
Detailed Description
Embodiments will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a piston valve of a self-adaptive damping shock absorber includes a shock absorber cylinder 1, a piston rod 2 and a valve body assembly 3, wherein the piston rod 2 is fixedly installed in the center of the shock absorber cylinder 1, the valve body assembly 3 is installed on the piston rod 2, and the valve body assembly 3 can move up and down along the axial direction of the piston rod 2; the valve body assembly 3 is positioned in the shock absorber cylinder barrel 1 and divides the shock absorber cylinder barrel into an upper cavity and a lower cavity, and a damping hole for connecting the upper cavity and the lower cavity is formed in the valve body assembly 3; the opening of the damping hole is proportional to the displacement of the valve body assembly 3 from the initial position.
When the shock absorber works, the larger the external force action is, the larger the offset of the valve body assembly 3 is, the larger the opening degree of the damping hole is, so that the damping of the shock absorber is reduced, when the external force action is reduced, the offset of the valve body assembly 3 is reduced, the opening degree of the damping hole is reduced, so that the damping of the shock absorber is increased.
As shown in fig. 2, the valve body assembly 3 includes a valve core 31 and a valve sleeve 32, the valve core 31 is located in the valve sleeve 32, and the valve core 31 moves together with the valve sleeve 32 and rotates relatively; the valve sleeve 32 comprises a valve seat 321 and a valve cover 322, the valve seat 321 and the valve cover 322 are respectively provided with through holes with the same number, size and shape, and the vertical direction projections of the through holes on the valve seat 321 and the valve cover 322 are completely overlapped; the valve core 31 is provided with an initial damping hole 311 and an adjusting damping hole 312, the initial damping hole 311 is communicated with through holes on the valve seat 321 and the valve cover 322 in an initial state, the adjusting damping hole 312 is communicated with the through holes on the valve seat 321 and the valve cover 322 after the valve core 31 rotates for a certain angle, and the larger the rotation angle is, the larger the opening degree of the adjusting damping hole 312 is.
As shown in fig. 4-7, the upper and lower chambers of the shock absorber of the present invention are communicated through the initial damping hole 311 of the valve body assembly 3, when the shock absorber has an external force, the oil flows to the low-pressure side chamber through the initial damping hole 311 under the action of the pressure difference, when the external force increases, the deviation of the valve body assembly 3 increases and the rotation angle of the valve core 31 increases, the adjusting damping hole 312 is connected, the flow rate of the oil increases, the damping decreases, and the larger the rotation angle is, the larger the opening of the adjusting damping hole 312 is, the smaller the damping is; on the contrary, when the external force action is reduced, the opening of the reset damping hole of the valve core 31 is reduced, and the damping is increased.
As shown in fig. 2, the through holes of the valve seat 321 and the valve cover 322 are fan-shaped holes so that the opening degree of the damping hole is uniformly increased as the rotation angle of the valve core 31 increases. The damping hole 312 is adjusted to be connected into the shock absorber through the fan-shaped hole along with the rotation of the valve core 31, so that the opening degree of the damping hole is increased.
In order to increase the damping adjustment range, the valve seat 321 and the valve cover 322 are provided with at least two fan-shaped holes, the central axes of which coincide with the central axis of the valve housing 2. The opening degree adjusting range of the damping hole can be effectively enlarged by forming a plurality of fan-shaped holes in the valve seat 321 and the valve cover 322.
As shown in fig. 2, 4-7, in order to increase the opening range of the adjusting damping holes 312, the number of the adjusting damping holes 312 is multiple, and the opening of the adjusting damping holes 312 is adjusted by the number of the communicated adjusting damping holes 312; when one damping adjusting hole 312 is provided, the opening of the damping adjusting hole 312 is adjusted by adjusting the size of the damping adjusting hole 312. The distribution, size, shape and number of the damper holes 312 can be designed as desired.
As shown in fig. 1 and 3, in order to realize the rotation of the valve core 31 relative to the valve sleeve 32 and the up-and-down movement of the whole valve body assembly 3, the piston rod 2 is provided with a valve body mounting portion 21, the valve body mounting portion 21 is of a helical rod structure, and the inner ring of the valve core 31 is provided with inner threads matched with the outer threads of the helical rod; the valve body mounting portion 21 is provided with a locking groove 211 along the axial direction, and the inner ring of the valve housing 32 is provided with a plurality of protruding portions 323 corresponding to the locking groove 211 along the axial direction.
The convex part 323 of the inner ring of the valve sleeve 32 slides in the clamping groove 211, the valve sleeve 32 slides up and down along the direction of the clamping groove 211, the number of the clamping grooves 211 and the convex parts 323 is four, the valve sleeve 32 can move more stably, and the error-proofing design that the sizes of the clamping grooves 211 and the convex parts 323 are matched can be adopted.
The valve core 31 rotates while moving up and down along the valve body mounting portion 21 under the cooperation of the helical rod and the internal threads, and since the valve core 31 is located inside the valve sleeve 32, the valve sleeve 32 and the valve core 31 move up and down synchronously, and the valve core 31 rotates relative to the valve sleeve 32, thereby realizing the control of the opening degree of the damping hole.
As shown in fig. 1 and 8, in order to reset the valve body assembly 3, an upper reset spring 4 and a lower reset spring 5 are respectively disposed above and below the valve body assembly 3. When the external force does not act, the valve body assembly 3 returns to the initial state under the action of the return spring.
As shown in fig. 1, in order to adjust the initial position of the valve body as a whole, adjusting nuts 6 are respectively disposed at both ends of the upper return spring 4 and the lower return spring 5. The valve body assembly 3 can be adjusted to the initial position more quickly by arranging the adjusting nuts 6 at the two ends of the return spring.
As shown in fig. 8, in order to adjust the initial position of the valve body as a whole, one end of the upper return spring 4 and the lower return spring 5 is provided with an adjusting nut 6, and the other end is provided with a retainer ring 7. Adjusting nut 6 installs on piston rod 2, compresses reset spring through rotatory adjusting nut 6, and valve body assembly 3 adjusts from top to bottom along piston rod 2 under reset spring's effect.
As shown in fig. 1 and 8, in order to improve the damping effect, a sealing ring 8 is arranged between the valve sleeve 32 and the inner wall of the damper cylinder 1, and the sealing ring 8 is mounted on the valve sleeve 32. The upper cavity and the lower cavity of the shock absorber cylinder barrel can be effectively isolated through the arrangement of the sealing ring 8, and the oil is guaranteed to flow in the upper cavity and the lower cavity through the damping holes.
Claims (8)
1. A piston valve of a self-adaptive damping shock absorber comprises a shock absorber cylinder (1), a piston rod (2) and a valve body assembly (3), wherein the piston rod (2) is fixedly arranged at the center of the shock absorber cylinder (1), the valve body assembly (3) is arranged on the piston rod (2), and the valve body assembly (3) can move up and down along the axial direction of the piston rod (2); the valve body assembly (3) is positioned in the shock absorber cylinder barrel (1) and divides the shock absorber cylinder barrel into an upper cavity and a lower cavity, and a damping hole for connecting the upper cavity and the lower cavity is formed in the valve body assembly (3); the method is characterized in that: the opening degree of the damping hole is in direct proportion to the pressure difference between the upper side and the lower side of the valve body assembly (3); an upper return spring (4) and a lower return spring (5) are respectively arranged on the upper part and the lower part of the valve body assembly (3); the valve body assembly (3) comprises a valve core (31) and a valve sleeve (32), the valve core (31) is positioned in the valve sleeve (32), and the valve core (31) moves along with the valve sleeve (32) and rotates relatively; the valve sleeve (32) comprises a valve seat (321) and a valve cover (322), the valve seat (321) and the valve cover (322) are respectively provided with through holes with the same number, size and shape, and the vertical direction projections of the through holes on the valve seat (321) and the valve cover (322) are completely overlapped; the valve core (31) is provided with an initial damping hole (311) and an adjusting damping hole (312), the initial damping hole (311) is communicated with through holes in the valve seat (321) and the valve cover (322) in an initial state, the adjusting damping hole (312) is communicated with the through holes in the valve seat (321) and the valve cover (322) after the valve core (31) rotates for a certain angle, and the larger the rotation angle is, the larger the opening degree of the adjusting damping hole (312) is; a valve body installation part (21) is arranged on the piston rod (2), the valve body installation part (21) is of a spiral rod piece structure, and inner threads matched with the outer threads of the spiral rod piece are arranged on the inner ring of the valve core (31); the valve body installation part (21) is provided with clamping grooves (211) along the axial direction, and the inner ring of the valve sleeve (32) is provided with convex parts (323) with the number corresponding to that of the clamping grooves (211) along the axial direction.
2. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: the through holes on the valve seat (321) and the valve cover (322) are fan-shaped holes.
3. The piston valve for an adaptive damping shock absorber according to claim 2, wherein: the valve seat (321) and the valve cover (322) are provided with at least two fan-shaped holes, and the central axes of the fan-shaped holes are overlapped with the central axis of the valve sleeve (32).
4. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: when the number of the adjusting damping holes (312) is more than or equal to 2, the opening degree of the adjusting damping holes (312) is adjusted through the number of the communicated adjusting damping holes (312); when the number of the adjusting damping holes (312) is one, the opening degree of the adjusting damping holes (312) is adjusted through the size adjustment of the communicated adjusting damping holes (312).
5. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: the upper end of the upper reset spring (4) is provided with a retainer ring (7), and the lower end of the lower reset spring (5) is provided with an adjusting nut (6).
6. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: an adjusting nut (6) is arranged at the upper end of the upper reset spring (4), and a check ring (7) is arranged at the lower end of the lower reset spring (5).
7. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: the upper end of the upper reset spring (4) is provided with an adjusting nut (6), and the lower end of the lower reset spring (5) is provided with an adjusting nut (6).
8. The piston valve for an adaptive damping shock absorber according to claim 1, wherein: and a sealing ring (8) is arranged between the valve sleeve (32) and the inner wall of the shock absorber cylinder barrel (1), and the sealing ring (8) is arranged on the valve sleeve (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567896.4A CN110319142B (en) | 2019-06-27 | 2019-06-27 | Piston valve of self-adaptive damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910567896.4A CN110319142B (en) | 2019-06-27 | 2019-06-27 | Piston valve of self-adaptive damping shock absorber |
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| Publication Number | Publication Date |
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| CN110319142A CN110319142A (en) | 2019-10-11 |
| CN110319142B true CN110319142B (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910567896.4A Active CN110319142B (en) | 2019-06-27 | 2019-06-27 | Piston valve of self-adaptive damping shock absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111120565B (en) * | 2020-02-20 | 2021-04-27 | 东莞利富高塑料制品有限公司 | But shock absorber of automatically regulated damping size |
| CN113586643B (en) * | 2020-04-30 | 2022-09-06 | 比亚迪股份有限公司 | Shock absorber and vehicle |
| CN112747074B (en) * | 2020-12-28 | 2022-04-01 | 武汉理工大学 | Novel magneto-rheological damper and vehicle ride comfort control method |
| CN113357303B (en) * | 2021-07-14 | 2022-09-23 | 浙江嘉派仕汽车配件有限公司 | Connecting rod type air bag shock absorber |
| CN113931968A (en) * | 2021-09-07 | 2022-01-14 | 西安航空制动科技有限公司 | Shock absorber for wheel of brake |
| CN113983112B (en) * | 2021-11-17 | 2023-02-28 | 长沙理工大学 | Damper for floating slab track bed |
| CN115143222B (en) * | 2022-07-18 | 2023-09-08 | 浙江快乐树减震器有限公司 | Mono-cylinder shock absorber with damping capable of being adaptively adjusted and application method thereof |
| CN115539554A (en) * | 2022-09-20 | 2022-12-30 | 重庆交通大学 | Damping adjusting valve with limiting device |
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| RU2127675C1 (en) * | 1998-07-27 | 1999-03-20 | Стравинский Игорь Александрович | Method of and device to control resistance force of hydraulic damper (design versions) |
| CN202371076U (en) * | 2011-11-21 | 2012-08-08 | 北汽福田汽车股份有限公司 | Adjusting valve and damping-adjustable shock absorber comprising adjusting valve |
| CN106151355B (en) * | 2016-08-29 | 2018-03-13 | 安徽工程大学 | Damping adjustment device suitable for electro-rheological fluid damper |
| CN108425979A (en) * | 2018-05-11 | 2018-08-21 | 南京林业大学 | The fluid linking damper of liquid pressure self-regulation in a kind of cylinder |
| CN109027097B (en) * | 2018-06-25 | 2020-11-13 | 武汉船用机械有限责任公司 | Hydraulic damping device |
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2019
- 2019-06-27 CN CN201910567896.4A patent/CN110319142B/en active Active
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