CN114877005A - Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper - Google Patents

Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper Download PDF

Info

Publication number
CN114877005A
CN114877005A CN202210387665.7A CN202210387665A CN114877005A CN 114877005 A CN114877005 A CN 114877005A CN 202210387665 A CN202210387665 A CN 202210387665A CN 114877005 A CN114877005 A CN 114877005A
Authority
CN
China
Prior art keywords
damping
unit
damping device
oil
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210387665.7A
Other languages
Chinese (zh)
Other versions
CN114877005B (en
Inventor
王征
王海波
刘佳
王艳山
赵建新
李辉
张文生
王东波
栾秋冬
张钊
禹世博
古邵楠
董丹
蒋遵涛
张迅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Arnoda Auto Parts Manufacturing Co ltd
Original Assignee
Shandong Arnoda Auto Parts Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Arnoda Auto Parts Manufacturing Co ltd filed Critical Shandong Arnoda Auto Parts Manufacturing Co ltd
Priority to CN202210387665.7A priority Critical patent/CN114877005B/en
Publication of CN114877005A publication Critical patent/CN114877005A/en
Application granted granted Critical
Publication of CN114877005B publication Critical patent/CN114877005B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
    • 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
    • F16F9/3207—Constructional features
    • 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
    • F16F9/3207—Constructional features
    • F16F9/3214—Constructional features of pistons
    • 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
    • F16F9/3207—Constructional features
    • F16F9/3221—Constructional features of piston rods
    • 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
    • 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
    • F16F9/42—Cooling arrangements
    • 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
    • F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
    • F16F9/435—Filling or drainage arrangements, e.g. for supply of gas via opening in cylinder wall
    • 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
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses a variable damping device of a valve plate-free piston matched single-layer pipe small-hole damper, which comprises a fixing unit, a sealing unit, a damping unit and a heat dissipation unit, wherein the heat dissipation unit is connected with the damping unit, and the damping unit and the sealing unit are both positioned in a cylinder barrel of the fixing unit; the damping unit comprises a piston rod, a damping pipe, a piston head and an oil passing cavity, the damping pipe is connected with the piston head in a sliding mode inside the piston rod, the oil passing cavity is formed between the damping pipe and the inner side wall of the piston rod, a plurality of oil passing holes are formed in the side wall of the damping pipe, and an oil outlet channel of the piston head is communicated with the oil passing cavity. The variable damping device of the invention adopts the structure that the valve plate-free piston is matched with the single-layer pipe small-hole damper, the piston rod is not provided with the valve plate, the damping value can be changed according to road conditions and is synchronous with the driving requirements of people, and the variable damping device can realize hydraulic anti-collision and has long service life.

Description

Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper
Technical Field
The invention relates to the technical field of automobile shock absorbers, in particular to a variable damping device of a valve plate-free piston matched single-layer pipe small-hole damper.
Background
The working principle of the hydraulic shock absorber is that when the vehicle body and the axle are vibrated and move relatively, a piston in the shock absorber moves up and down, and oil repeatedly flows from one cavity into the other cavity through different pores. The damping force of the automobile shock absorber is generally close to a fixed value, so that the bumping degree of a vehicle can be controlled only by the speed when the automobile shock absorber is driven, meanwhile, the design of the damping value is mostly realized by the valve plates in the internal structure, the requirement on the manufacturing accuracy of the valve plates is high, and the valve plates are easy to damage and high in cost.
Disclosure of Invention
The invention aims to provide a variable damping device of a valve plate-free piston matched with a single-layer pipe small-hole damper, wherein a piston rod is not provided with a valve plate, the damping value can be changed according to road conditions and is synchronous with the driving requirements of people, and the variable damping device can realize hydraulic anti-collision and has long service life.
In order to achieve the following purposes, the invention provides a variable damping device of a valve plate-free piston matched single-layer tube small-hole damper, which comprises a fixing unit, a sealing unit, a damping unit and a heat dissipation unit, wherein the heat dissipation unit is connected with the damping unit, and the damping unit and the sealing unit are both positioned in a cylinder barrel of the fixing unit;
the damping unit comprises a piston rod, a damping pipe, a piston head and an oil passing cavity, the damping pipe is connected with the piston head in a sliding mode inside the piston rod, the oil passing cavity is formed between the damping pipe and the inner side wall of the piston rod, a plurality of oil passing holes are formed in the side wall of the damping pipe, and an oil outlet channel of the piston head is communicated with the oil passing cavity.
Preferably, the fixed unit includes end cover, oilless bearing, goes up the lug, lower lug and the cylinder, go up the lug respectively with the cylinder with the damping pipe is connected, down the lug with the piston rod is connected, the end cover be equipped with piston rod assorted removes the hole, remove downthehole be equipped with piston rod sliding connection oilless bearing.
Preferably, the sealing unit comprises a sealing ring and an oil seal, the piston rod is sequentially sleeved with the sealing ring and the oil seal from inside to outside at the end cover, and the sealing ring is sleeved at the joint of the cylinder barrel and the upper lifting lug.
Preferably, the heat dissipation unit comprises a nitrogen cylinder, the nitrogen cylinder is communicated with a first oil cavity at the upper lifting lug through a first oil pipe and a second oil pipe, and the first oil cavity is communicated with a second one-way valve and the damping pipe respectively.
Preferably, the damping pipe is communicated with a first one-way valve, and the cylinder barrel is communicated with a second one-way valve.
Preferably, the total length of the piston rod and the piston head is greater than the length of the damper tube.
Therefore, the variable damping device of the invention adopts the structure that the valve plate-free piston is matched with the single-layer pipe small-hole damper, the piston rod is not provided with the valve plate, the damping value can be changed according to road conditions and is synchronous with the driving requirements of people, and the variable damping device can realize hydraulic anti-collision and has long service life.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a front sectional view of a variable damping device of a valve plate-free piston matched single-layer tube orifice damper.
Reference numerals
1. A cylinder barrel; 2. a piston rod; 3. a damper tube; 4. a piston head; 5. an oil passing cavity; 6. an oil passing hole; 7. an oil outlet channel; 8. a first check valve; 9. a second one-way valve; 10. an upper lifting lug; 11. an end cap; 12. an oilless bearing; 13. a nitrogen cylinder; 14. a first oil chamber; 15. and a lower lifting lug.
Detailed Description
The technical solution of the present invention is further explained by the drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "lower", "upper", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 is a front sectional view of a variable damping device of a non-valve plate piston matched single-layer tube orifice damper, and as shown in the figure, the variable damping device of the non-valve plate piston matched single-layer tube orifice damper comprises a fixing unit, a sealing unit, a damping unit and a heat dissipation unit. The heat dissipation unit is connected with the damping unit, and the damping unit and the sealing unit are both located inside the cylinder barrel 1 of the fixing unit. The sealing unit guarantees that damping oil does not reveal, and the shock attenuation unit carries out the shock attenuation to the car, and the radiating unit carries out the heat dissipation to damping oil and handles, guarantees the shock attenuation effect of shock attenuation unit.
The damping unit comprises a piston rod 2, a damping tube 3, a piston head 4 and an oil passing cavity 5, the damping tube 3 inside the piston rod 2 is in sliding connection with the piston head 4, the oil passing cavity 5 is formed between the damping tube 3 and the inner side wall of the piston rod 2, a plurality of oil passing holes 6 are formed in the side wall of the damping tube 3, and an oil outlet channel 7 of the piston head 4 is communicated with the oil passing cavity 5.
The fixing unit comprises an end cover 11, an oilless bearing 12, an upper lifting lug 10, a lower lifting lug 15 and a cylinder barrel 1, wherein the upper lifting lug 10 is respectively connected with the cylinder barrel 1 and a damping pipe 3, and the lower lifting lug 15 is connected with a piston rod 2. The end cover 11 is provided with a moving hole matched with the piston rod 2, and an oilless bearing 12 connected with the piston rod 2 in a sliding manner is arranged in the moving hole. The upper lifting lug 10 fixes the positions of the damping tube 3 and the cylinder barrel 1, and the smooth work of the damping unit is ensured. The arrangement of the moving hole and the oilless bearing 12 ensures that the piston rod 2 moves smoothly relative to the cylinder barrel 1.
The sealing unit comprises a sealing ring and an oil seal, the piston rod 2 is sequentially sleeved with the sealing ring and the oil seal at the end cover 11 from inside to outside, and the sealing ring is sleeved at the joint of the cylinder barrel 1 and the upper lifting lug 10. The setting of sealing washer and oil blanket avoids the inside damping oil of cylinder 1 to reveal.
The heat dissipation unit comprises a nitrogen cylinder 13, and the nitrogen cylinder 13 is communicated with a first oil chamber 14 at the upper lifting lug 10 through a first oil pipe and a second oil pipe. The first oil chamber 14 is respectively communicated with the second one-way valve 9 and the damping pipe 3, and smooth work of the damping unit is guaranteed. The nitrogen cylinder 13 carries out heat dissipation treatment on the damping oil entering the nitrogen cylinder, and the cooled damping oil continues to enter the damping unit to work, so that the damping effect of the damping unit is ensured.
The damping tube 3 is communicated with the first one-way valve 8, and the cylinder barrel 1 is communicated with the second one-way valve 9.
The total length of the piston rod 2 and the piston head 4 is greater than the length of the damping tube 3.
Example 1
Different damping values are generated according to the relative position change of the piston rod 2 and the damping tube 3. The damping value of the piston rod 2 is smaller at the middle position of the damping tube 3, and the damping value of the piston rod 2 is larger at the two ends of the damping tube 3. The law is synchronous with the law of the bumping degree when the vehicle runs, and the hydraulic anti-collision effect is achieved when the two ends of the damping pipe 3 are not provided with the oil through holes 6.
In the compression process of the damping unit, the piston rod 2 moves upwards relative to the cylinder barrel 1 to drive damping oil above the piston rod 2 to enter the damping pipe 3 along the oil passing hole 6, the oil passing hole 6 can be distributed into a plurality of sections on the side wall of the damping pipe 3, and the number of holes, the aperture and the interval of each section can be different. Part of the damping oil enters the oil passing cavity 5 from the oil passing hole 6 in the piston rod 2, and the other part of the damping oil enters the first oil cavity 14 through the damping pipe 3 and finally enters the nitrogen cylinder 13 for heat dissipation. The damping oil entering the interior of the oil passing chamber 5 enters below the piston head 4 along the oil outlet passage 7 at the piston head 4.
When the piston head 4 approaches the upper part of the cylinder barrel 1, the piston head 4 closes the oil passing hole 6, and the damping oil above the piston head 4 cannot flow along the second one-way valve 9. Damping oil in the nitrogen cylinder 13 enters the first oil chamber 14 and then enters the upper part of the piston head 4 through the second one-way valve 9, so that hydraulic collision avoidance is realized.
During the stretching of the damping unit, the second check valve 9 is opened, and the damping oil inside the nitrogen cylinder 13 enters above the piston head 4. Damping oil below the piston head 4 enters the oil passing chamber 5 through the oil outlet passage 7. A part of the damping oil inside the oil passing chamber 5 returns to above the piston head 4 or enters the nitrogen cylinder 13 through the damping pipe 3, and the other part remains inside the oil passing chamber 5.
When the piston head 4 is close to the end cover 11, the piston head 4 closes the oil passing hole 6, and the damping oil below the piston head 4 cannot flow. The pressure difference enables the damping oil in the damping pipe 3 to push the first check valve 8 and then enter the oil passing cavity 5, and then enter the lower part of the piston head 4 through the oil outlet channel 7, so that hydraulic collision avoidance is realized.
Therefore, the variable damping device of the invention adopts the structure that the valve plate-free piston is matched with the single-layer pipe small-hole damper, the piston rod is not provided with the valve plate, the damping value can be changed according to road conditions, the damping value is synchronous with the driving requirements of people, and the variable damping device can realize hydraulic anti-collision and has long service life.
Finally, it should be noted that: the following examples are intended only to illustrate the technical solution of the present invention and not to limit it, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides a variable damping device of no valve plate piston cooperation single-layer pipe aperture attenuator which characterized in that: the damping device comprises a fixing unit, a sealing unit, a damping unit and a heat dissipation unit, wherein the heat dissipation unit is connected with the damping unit, and the damping unit and the sealing unit are both positioned in a cylinder barrel of the fixing unit;
the damping unit comprises a piston rod, a damping pipe, a piston head and an oil passing cavity, the damping pipe is connected with the piston head in a sliding mode inside the piston rod, the oil passing cavity is formed between the damping pipe and the inner side wall of the piston rod, a plurality of oil passing holes are formed in the side wall of the damping pipe, and an oil outlet channel of the piston head is communicated with the oil passing cavity.
2. The variable damping device of claim 1, wherein the variable damping device comprises a valve plate-free piston and a single-layer tube orifice damper, and the variable damping device comprises: the fixed unit comprises an end cover, an oilless bearing, an upper lifting lug, a lower lifting lug and the cylinder barrel, wherein the upper lifting lug is respectively connected with the cylinder barrel and the damping pipe, the lower lifting lug is connected with the piston rod, the end cover is provided with a moving hole matched with the piston rod, and the moving hole is internally provided with the oilless bearing connected with the piston rod in a sliding manner.
3. The variable damping device of claim 2, wherein the valve plate-free piston is matched with the single-layer tube orifice damper, and the variable damping device comprises: the sealing unit comprises a sealing ring and an oil seal, the piston rod is arranged at the end cover from inside to outside, the sealing ring and the oil seal are sequentially sleeved on the end cover, and the sealing ring is sleeved at the joint of the cylinder barrel and the upper lifting lug.
4. The variable damping device of claim 2, wherein the valve plate-free piston is matched with the single-layer tube orifice damper, and the variable damping device comprises: the heat dissipation unit comprises a nitrogen cylinder, the nitrogen cylinder is communicated with a first oil cavity at the upper lifting lug through a first oil pipe and a second oil pipe, and the first oil cavity is communicated with a second one-way valve and the damping pipe respectively.
5. The variable damping device of claim 4, wherein the valve plate-free piston is matched with the single-layer tube orifice damper, and the variable damping device comprises: the damping pipe is communicated with the first one-way valve, and the cylinder barrel is communicated with the second one-way valve.
6. The variable damping device of claim 1, wherein the variable damping device comprises a valve plate-free piston and a single-layer tube orifice damper, and the variable damping device comprises: the total length of the piston rod and the piston head is greater than the length of the damper tube.
CN202210387665.7A 2022-04-13 2022-04-13 Variable damping device of valve-plate-free piston matched single-layer pipe small-hole damper Active CN114877005B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210387665.7A CN114877005B (en) 2022-04-13 2022-04-13 Variable damping device of valve-plate-free piston matched single-layer pipe small-hole damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210387665.7A CN114877005B (en) 2022-04-13 2022-04-13 Variable damping device of valve-plate-free piston matched single-layer pipe small-hole damper

Publications (2)

Publication Number Publication Date
CN114877005A true CN114877005A (en) 2022-08-09
CN114877005B CN114877005B (en) 2023-10-17

Family

ID=82670663

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210387665.7A Active CN114877005B (en) 2022-04-13 2022-04-13 Variable damping device of valve-plate-free piston matched single-layer pipe small-hole damper

Country Status (1)

Country Link
CN (1) CN114877005B (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758083A1 (en) * 1977-12-24 1979-07-05 Stabilus Gmbh FREQUENCY-DEPENDENT VIBRATION DAMPER
CN101505981A (en) * 2006-06-07 2009-08-12 李海珍 Shock absorber apparatus for reducing weight and vibration of vehicle
CN202914615U (en) * 2012-11-12 2013-05-01 杭州伊诺斐机电有限公司 Bidirectional speed regulator
JP2013096566A (en) * 2011-11-07 2013-05-20 Honda Motor Co Ltd Damping force variable damper
CN104179872A (en) * 2014-07-24 2014-12-03 三一矿机有限公司 Variable damping oil-gas suspension cylinder and mining dump truck thereof
US20190032742A1 (en) * 2016-01-29 2019-01-31 Thyssenkrupp Bilstein Gmbh Vibration damper
CN209687985U (en) * 2019-03-18 2019-11-26 络优集成科技(无锡)有限公司 The cylinder type damper of adaptive damping
CN211501448U (en) * 2020-01-22 2020-09-15 无锡比德希减震阻尼技术有限公司 Hydraulic buffer device and buffer system
CN112727978A (en) * 2021-01-22 2021-04-30 保定市东利机械制造股份有限公司 Damping self-adaptation automobile shock absorber ware
CN112747063A (en) * 2019-10-31 2021-05-04 比亚迪股份有限公司 Vibration damper, energy conversion device and vehicle
CN113931961A (en) * 2021-09-09 2022-01-14 神龙汽车有限公司 Novel hydraulic self-adaptive damping adjustment shock absorber

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758083A1 (en) * 1977-12-24 1979-07-05 Stabilus Gmbh FREQUENCY-DEPENDENT VIBRATION DAMPER
CN101505981A (en) * 2006-06-07 2009-08-12 李海珍 Shock absorber apparatus for reducing weight and vibration of vehicle
JP2013096566A (en) * 2011-11-07 2013-05-20 Honda Motor Co Ltd Damping force variable damper
CN202914615U (en) * 2012-11-12 2013-05-01 杭州伊诺斐机电有限公司 Bidirectional speed regulator
CN104179872A (en) * 2014-07-24 2014-12-03 三一矿机有限公司 Variable damping oil-gas suspension cylinder and mining dump truck thereof
US20190032742A1 (en) * 2016-01-29 2019-01-31 Thyssenkrupp Bilstein Gmbh Vibration damper
CN209687985U (en) * 2019-03-18 2019-11-26 络优集成科技(无锡)有限公司 The cylinder type damper of adaptive damping
CN112747063A (en) * 2019-10-31 2021-05-04 比亚迪股份有限公司 Vibration damper, energy conversion device and vehicle
CN211501448U (en) * 2020-01-22 2020-09-15 无锡比德希减震阻尼技术有限公司 Hydraulic buffer device and buffer system
CN112727978A (en) * 2021-01-22 2021-04-30 保定市东利机械制造股份有限公司 Damping self-adaptation automobile shock absorber ware
CN113931961A (en) * 2021-09-09 2022-01-14 神龙汽车有限公司 Novel hydraulic self-adaptive damping adjustment shock absorber

Also Published As

Publication number Publication date
CN114877005B (en) 2023-10-17

Similar Documents

Publication Publication Date Title
CN107339360B (en) A kind of undercarriage buffer
CN104100673B (en) Automobile power assembly semi-active control hydraulic mount
EP2348227B1 (en) Stiff damper
EP1158202A3 (en) Independently tunable variable bleed orifice
CN203962843U (en) Automobile power assembly half active control hydraulic pressure suspension
CN201671908U (en) Actuator cylinder internally installed with buffer device
ITRM980567A1 (en) COMPRESSED GAS SHOCK ABSORBER
CN114877005A (en) Variable damping device of valve plate-free piston matched single-layer pipe small-hole damper
CN210565968U (en) Adjustable damping shock absorber
CN110594341B (en) Drum-type shock absorber for automobile suspension
CN215908302U (en) Air bag type compression force adjustable shock absorber
CN201391511Y (en) Hydraulic cylinder cushioning device
CN214578526U (en) Hydraulic damping type bidirectional fixed speed controller
CN209743462U (en) hydraulic vibration reduction piston with adjustable damping and hydraulic vibration reducer
CN208221453U (en) A kind of multistage flowing speed type bidirectional damper mechanism and hydraulic shock-absorption piston of more valve blocks
CN114877004A (en) Double-oil-cylinder variable damping structure for shock absorber
CN108105323B (en) Automobile shock absorber
CN107989947B (en) Multi-piston damping adjustable shock absorber mechanism
CN208565387U (en) The vehicle shock absorber of adaptive damping
CN208348200U (en) A kind of composite cushioned hydraulic cylinder of built-in buffer unit
CN102733701B (en) A kind of damper with metal shell
CN111637184A (en) Automobile suspension double-capsule variable-stiffness gas spring
CN219795943U (en) Valve body for vehicle suspension damper
CN103727163B (en) Three single cycle formula automobile absorbers
CN203784181U (en) Rapid heat-dissipating damper

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant