CN116733881A - Air spring composite shock absorber with height automatic adjusting function - Google Patents

Air spring composite shock absorber with height automatic adjusting function Download PDF

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Publication number
CN116733881A
CN116733881A CN202310855837.3A CN202310855837A CN116733881A CN 116733881 A CN116733881 A CN 116733881A CN 202310855837 A CN202310855837 A CN 202310855837A CN 116733881 A CN116733881 A CN 116733881A
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CN
China
Prior art keywords
end cover
valve
air
oil storage
air spring
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Pending
Application number
CN202310855837.3A
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Chinese (zh)
Inventor
彭哲熙
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Guangzhou Viking Auto Parts Co ltd
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Guangzhou Viking Auto Parts Co ltd
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Application filed by Guangzhou Viking Auto Parts Co ltd filed Critical Guangzhou Viking Auto Parts Co ltd
Priority to CN202310855837.3A priority Critical patent/CN116733881A/en
Publication of CN116733881A publication Critical patent/CN116733881A/en
Pending legal-status Critical Current

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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
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/064—Units characterised by the location or shape of the expansion chamber
    • 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
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
    • F16F9/084—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder
    • 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
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/362—Combination of sealing and guide arrangements for 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
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/368—Sealings in 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
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
    • 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
    • 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
    • F16F9/5123—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 responsive to the static or steady-state load on the damper
    • 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
    • F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
    • 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
    • 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
    • F16F2222/126—Fluid damping using gases
    • 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
    • F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention discloses an air spring composite shock absorber with a height automatic adjusting function, which comprises a shock absorber main body, wherein the shock absorber main body is provided with a height automatic adjusting mechanism and an air spring, an oil storage cylinder is fixedly arranged on the outer side of the shock absorber main body, and the middle of the oil storage cylinder is connected with a piston rod through a movable valve core; the air spring comprises an end cover, a piston and a capsule shell, wherein the end cover is arranged on the outer surface of the oil storage cylinder, and the end cover and the piston are respectively connected with the two ends of the capsule shell; the automatic height adjusting mechanism is arranged between the end cover and the oil storage cylinder and comprises an air inlet valve and an air outlet valve which are fixedly arranged on side holes of the end cover. The beneficial effects of the invention are as follows: through the relative motion of the piston and the end cover, the air inlet valve and the air outlet valve on the end cover are driven to be closed or opened, so that the height of the damper main body is always kept to be up and down floating at the designed height position, and the automatic height adjustment is realized while the vibration reduction of the air spring is ensured.

Description

Air spring composite shock absorber with height automatic adjusting function
Technical Field
The invention relates to a shock absorber, in particular to an air spring composite shock absorber with a height automatic adjusting function, and belongs to the technical field of shock absorbers.
Background
With the high-speed development of economy in China, the requirements of users on comfort level are higher and higher, and the air spring is favored by the majority of users with excellent comfort level, especially on a commercial vehicle cab suspension system, so that the air spring composite damper is basically popularized.
In order to improve the comfort level of the air spring and stabilize the riding posture of a driver, the air spring needs to have the requirement of being inflated and deflated at any time, and an external height valve is basically matched in the market at present.
The external altitude valve is connected with the link mechanism generally, and the function of inflating and deflating the altitude valve is achieved through swinging of the link mechanism. However, due to the complexity of the link mechanism, when the whole vehicle factory is assembled with the external height valve, a great deal of time is often spent for debugging, and the loading efficiency is greatly reduced. And the external altitude valve works in open air throughout the year, is subjected to severe environmental degradation, and greatly reduces the service life. Meanwhile, powder oil dirt and the like in the air path often block the air hole of the external height valve, so that the function of the height valve is invalid, and the maintenance cost of the vehicle is increased.
Disclosure of Invention
The invention aims to solve the problems and provide the air spring composite damper with the height automatic adjusting function, by compositely integrating the height automatic adjusting mechanism with the air spring and the damper main body, through the relative movement of the piston and the end cover, the air inlet valve and the air outlet valve on the end cover are driven to be closed or opened, so that the height of the damper main body always keeps to float up and down at the designed height position, the air spring is ensured to be damped, the height automatic adjustment is realized, and besides the loading process is simplified, and the installation space is also saved.
The invention realizes the aim through the following technical scheme that the air spring composite shock absorber with the height automatic adjusting function comprises a shock absorber main body, wherein the shock absorber main body is provided with a height automatic adjusting mechanism and an air spring, an oil storage cylinder is fixedly arranged on the outer side of the shock absorber main body, and a piston rod is connected with the middle of the oil storage cylinder through a movable valve core;
the air spring comprises an end cover, a piston and a capsule shell, wherein the end cover is arranged on the outer surface of the oil storage cylinder, and the end cover and the piston are respectively connected with two ends of the capsule shell;
the automatic height adjusting mechanism is arranged between the end cover and the oil storage cylinder and comprises an air inlet valve and an air outlet valve which are fixedly arranged on side holes of the end cover.
Preferably, a lower lifting ring is welded below the oil storage cylinder, a lower bushing is arranged inside the lower lifting ring, an upper lifting ring is connected to the upper end of the piston rod through threads, an upper bushing is arranged inside the upper lifting ring, and a buffer block is arranged outside the piston rod.
Preferably, a second O-shaped ring is arranged between the oil storage cylinder and the end cover, partition sealing is formed between the oil storage cylinder and the end cover through the second O-shaped ring, a first compression ring and a second compression ring are respectively arranged at the joint of the capsule shell and the end cover and the piston, the joint of the capsule shell, the end cover and the piston is sealed through the first compression ring and the second compression ring, a dust cover is arranged at the outer side of the piston, a first O-shaped ring is arranged between the inner side of the piston and the piston rod, and the first O-shaped ring is used for sealing between the inner side of the piston and the piston rod, so that a sealed cavity is formed inside the capsule shell.
Preferably, the automatic height adjusting mechanism further comprises a lower spring and a valve body upper end cover, the bottom end of the lower spring is fixedly connected with the outer side of the oil storage cylinder, the valve body upper end cover is fixedly connected with the oil storage cylinder through a baffle plate, a valve body framework is arranged above the lower spring, the upper end face of the lower spring is in contact with the valve body framework, the lower end of the valve body framework is provided with a valve body lower support, a lower baffle ring is arranged between the valve body lower support and the oil storage cylinder, and blocking is formed through the lower baffle ring.
Preferably, a middle spring is arranged between the lower baffle ring and the valve body framework, the upper part of the middle spring is in contact with the upper end cover of the valve body, the upper baffle ring is arranged in the upper end cover of the valve body, and an upper spring is arranged between the upper baffle ring and the valve body framework.
Preferably, one side of the end cover is provided with a first round hole, the air inlet valve is assembled in the first round hole, a third O-shaped ring is arranged between the end cover and the air inlet valve, a sealing structure is formed between the end cover and the air inlet valve through the third O-shaped ring, one end of the air inlet valve is connected with an air tap, and an air pipe is inserted into the hole of the air tap.
Preferably, the other side of the end cover is provided with a second round hole, the exhaust valve is assembled in the second round hole, a fourth O-shaped ring is arranged between the end cover and the exhaust valve, a sealing structure is formed between the end cover and the exhaust valve through the fourth O-shaped ring, and the other end of the exhaust valve is connected with a nut through threads.
Preferably, the end of the intake valve is equipped with an intake valve needle.
Preferably, one end of the exhaust valve is provided with an exhaust valve thimble, and the other end of the exhaust valve is provided with an exhaust hole.
The beneficial effects of the invention are as follows: through the high automatic regulating mechanism and air spring and the compound integration of shock absorber main part together, through the relative motion of piston and end cover, intake valve and discharge valve on the drive end cover are closed or are opened, make the height of shock absorber main part remain floating from top to bottom in the design height position all the time, when guaranteeing air spring damping, realize high automatically regulated, outside having simplified the loading flow, also saved installation space.
Under the design height, under the fixed bearing of the two ends of the shock absorber main body, the end face of the air inlet valve thimble is in a non-contact state, the air inlet valve is in a closed state, the air outlet valve thimble is in a compressed state, and the air outlet valve is also in a closed state; when the air pressure in the cavity is insufficient, the air spring has a compression trend, when the air spring is compressed to a certain height, the end face of the air inlet valve thimble is contacted with the valve body framework, the air inlet valve thimble is pressed into the air inlet valve, the internal channel of the air inlet valve is opened, and high-pressure air enters the cavity from the air pipe; when the air pressure in the cavity is gradually increased, the bearing of the air spring is gradually increased, and the valve body framework is gradually far away from the air inlet valve until the air inlet valve is closed, and the air charging is stopped; when the vehicle jolts, the air spring is in a stretching state, the lower support of the valve body moves along the direction away from the exhaust valve, the ejector pin of the exhaust valve ejects out of the exhaust valve, the internal channel of the exhaust valve is opened, high-pressure air in the cavity gradually discharges the air spring, the air pressure in the air spring is reduced, the stretching amplitude of the air spring is reduced until the height of the air spring is restored to the design height, and the air spring always works in a smaller height range.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a portion of the structure of the present invention;
FIG. 3 is a schematic diagram of a portion of the structure of the second embodiment of the present invention;
FIG. 4 is a schematic diagram of a portion of a third embodiment of the present invention;
fig. 5 is a schematic diagram of the operation of an embodiment of the present invention.
In the figure: 1. a damper main body; 101. a lower hanging ring; 102. a lower bushing; 103. an oil storage cylinder; 104. a piston rod; 105. an upper hanging ring; 106. an upper bushing; 2. an air pipe; 3. an air tap; 4. an end cap; 5. a third O-ring; 6. a first press ring; 7. a capsule skin; 8. a lower spring; 9. a lower baffle ring; 10. an intake valve; 1001. an air inlet valve thimble; 11. a valve body skeleton; 12. a spring is arranged; 13. an upper baffle ring; 14. a chamber; 15. a dust cover; 16. a first O-ring; 17. a second press ring; 18. a piston; 19. a buffer block; 20. an upper end cover of the valve body; 21. a middle spring; 22. a valve body lower support; 23. an exhaust valve; 2301. an exhaust valve ejector pin; 2302. an exhaust hole; 24. a fourth O-ring; 25. a nut; 26. and a second O-ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses an air spring composite shock absorber with a height automatic adjusting function.
According to the drawings 1-5, the vibration absorber comprises a vibration absorber main body 1, wherein the vibration absorber main body 1 is provided with a height automatic adjusting mechanism and an air spring, an oil storage cylinder 103 is fixedly arranged on the outer side of the vibration absorber main body 1, and a piston rod 104 is connected with the middle of the oil storage cylinder 103 through a movable valve core;
the air spring comprises an end cover 4, a piston 18 and a capsule shell 7, wherein the end cover 4 is arranged on the outer surface of the oil storage cylinder 103, and the end cover 4 and the piston 18 are respectively connected with two ends of the capsule shell 7;
the height automatic adjusting mechanism is arranged between the end cover 4 and the oil storage cylinder 103, the height automatic adjusting mechanism comprises an air inlet valve 10 and an air outlet valve 23, and the air inlet valve 10 and the air outlet valve 23 are fixedly arranged on side holes of the end cover 4.
Through the compound integration of high automatically regulated mechanism and air spring and shock absorber main part 1 together, through the relative motion of piston 18 and end cover 4, drive the admission valve 10 and the discharge valve 23 on the end cover 4 and close or open, make the height of shock absorber main part 1 remain the upper and lower floating in the design height position throughout, realize high automatically regulated when guaranteeing air spring damping, outside having simplified the loading flow, also saved installation space.
Under the design height, under the condition that fixed bearing exists at two ends of the shock absorber main body 1, the end face of the air inlet valve thimble 1001 is in a non-contact state, the air inlet valve 10 is in a closed state, the air outlet valve thimble 2301 is in a compressed state, and the air outlet valve 23 is also in a closed state;
when the air pressure in the cavity 14 is insufficient, the air spring has a compression trend, when the air spring is compressed to a certain height, the end face of the air inlet valve thimble 1001 is contacted with the valve body framework 11, the air inlet valve thimble 1001 is pressed into the air inlet valve 10, the internal channel of the air inlet valve 10 is opened, and high-pressure air enters the cavity 14 from the air pipe 2;
when the air pressure in the chamber 14 is gradually increased, the bearing of the air spring is gradually increased, and the valve body framework 11 is gradually far away from the air inlet valve 10 until the air inlet valve 10 is closed, and the air charging is stopped;
when the air spring is in a stretching state during bumping of the vehicle, the valve body lower support 22 moves in a direction away from the exhaust valve 23, the exhaust valve thimble 2301 ejects from the exhaust valve 23, the internal channel of the exhaust valve 23 is opened, high-pressure air in the cavity 14 is gradually discharged out of the air spring, the air pressure in the air spring is reduced, the stretching amplitude of the air spring is reduced until the height of the air spring is restored to the designed height, and the air spring always works in a smaller height range.
Preferably, a lower lifting ring 101 is welded below the oil storage cylinder 103, a lower bushing 102 is assembled inside the lower lifting ring 101, an upper lifting ring 105 is connected to the upper end of the piston rod 104 through threads, an upper bushing 106 is assembled inside the upper lifting ring 105, and a buffer block 19 is arranged outside the piston rod 104.
Preferably, a second O-shaped ring 26 is arranged between the oil storage cylinder 103 and the end cover 4, partition sealing is formed between the oil storage cylinder 103 and the end cover 4 through the second O-shaped ring 26, a first compression ring 6 and a second compression ring 17 are respectively arranged at the connection part of the capsule shell 7 and the end cover 4 and the piston 18, the connection part of the capsule shell 7 and the end cover 4 and the piston 18 is sealed through the first compression ring 6 and the second compression ring 17, a dust cover 15 is assembled at the outer side of the piston 18, a first O-shaped ring 16 is arranged between the inner side of the piston 18 and the piston rod 104, and the first O-shaped ring 16 is used for sealing between the inner side of the piston 18 and the piston rod 104, so that a sealed cavity 14 is formed inside the capsule shell 7.
Preferably, the automatic height adjusting mechanism further comprises a lower spring 8 and a valve body upper end cover 20, the bottom end of the lower spring 8 is fixedly connected with the outer side of the oil storage cylinder 103, the valve body upper end cover 20 is fixedly connected with the oil storage cylinder 103 through a baffle plate, a valve body framework 11 is arranged above the lower spring 8, the upper end face of the lower spring 8 is in contact with the valve body framework 11, a valve body lower support 22 is arranged at the lower end of the valve body framework 11, a lower baffle ring 9 is arranged between the valve body lower support 22 and the oil storage cylinder 103, and blocking is formed through the lower baffle ring 9.
Preferably, a middle spring 21 is arranged between the lower baffle ring 9 and the valve body framework 11, the upper side of the middle spring 21 is in contact with the valve body upper end cover 20, an upper baffle ring 13 is arranged in the valve body upper end cover 20, and an upper spring 12 is arranged between the upper baffle ring 13 and the valve body framework 11.
Preferably, one side of the end cover 4 is provided with a first round hole, the air inlet valve 10 is assembled in the first round hole, a third O-shaped ring 5 is arranged between the end cover 4 and the air inlet valve 10, a sealing structure is formed between the end cover 4 and the air inlet valve 10 through the third O-shaped ring 5, one end of the air inlet valve 10 is connected with the air tap 3, and an air pipe 2 is inserted into the hole of the air tap 3.
Preferably, a second round hole is formed in the other side of the end cover 4, the exhaust valve 23 is assembled in the second round hole, a fourth O-shaped ring 24 is arranged between the end cover 4 and the exhaust valve 23, a sealing structure is formed between the end cover 4 and the exhaust valve 23 through the fourth O-shaped ring 24, and a nut 25 is connected to the other end of the exhaust valve 23 through threads.
Preferably, the end of intake valve 10 is fitted with an intake valve needle 1001.
Preferably, one end of the exhaust valve 23 is equipped with an exhaust valve spike 2301, and the other end of the exhaust valve 23 is provided with an exhaust hole 2302.
Under the design height, under the condition that fixed bearing exists at two ends of the shock absorber main body 1, the end face of the air inlet valve thimble 1001 is in a non-contact state, the air inlet valve 10 is in a closed state, the air outlet valve thimble 2301 is in a compressed state, and the air outlet valve 23 is also in a closed state;
when the air pressure in the cavity 14 is insufficient, the air spring has a compression trend, when the air spring is compressed to a certain height, the end face of the air inlet valve thimble 1001 is contacted with the valve body framework 11, the air inlet valve thimble 1001 is pressed into the air inlet valve 10, the internal channel of the air inlet valve 10 is opened, and high-pressure air enters the cavity 14 from the air pipe 2;
when the air pressure in the chamber 14 is gradually increased, the bearing of the air spring is gradually increased, and the valve body framework 11 is gradually far away from the air inlet valve 10 until the air inlet valve 10 is closed, and the air charging is stopped;
when the air spring is in a stretching state during bumping of the vehicle, the valve body lower support 22 moves in a direction away from the exhaust valve 23, the exhaust valve thimble 2301 ejects from the exhaust valve 23, the internal channel of the exhaust valve 23 is opened, high-pressure air in the cavity 14 is gradually discharged out of the air spring, the air pressure in the air spring is reduced, the stretching amplitude of the air spring is reduced until the height of the air spring is restored to the designed height, and the air spring always works in a smaller height range.
Through the compound integration of high automatically regulated mechanism and air spring and shock absorber main part 1 together, through the relative motion of piston 18 and end cover 4, drive the admission valve 10 and the discharge valve 23 on the end cover 4 and close or open, make the height of shock absorber main part 1 remain the upper and lower floating in the design height position throughout, realize high automatically regulated when guaranteeing air spring damping, outside having simplified the loading flow, also saved installation space.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (9)

1. The utility model provides an air spring composite damper with high automatically regulated function, includes shock absorber main part (1), its characterized in that: the shock absorber is characterized in that the shock absorber main body (1) is provided with a height automatic adjusting mechanism and an air spring, an oil storage cylinder (103) is fixedly arranged on the outer side of the shock absorber main body (1), and a piston rod (104) is connected with the middle of the oil storage cylinder (103) through a movable valve core;
the air spring comprises an end cover (4), a piston (18) and a bag cover (7), wherein the end cover (4) is arranged on the outer surface of the oil storage cylinder (103), and the end cover (4) and the piston (18) are respectively connected with two ends of the bag cover (7);
the automatic height adjusting mechanism is arranged between the end cover (4) and the oil storage cylinder (103), and comprises an air inlet valve (10) and an air outlet valve (23), and the air inlet valve (10) and the air outlet valve (23) are fixedly arranged on side holes of the end cover (4).
2. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: the lower part of the oil storage cylinder (103) is welded with a lower lifting ring (101), a lower bushing (102) is arranged in the lower lifting ring (101), an upper lifting ring (105) is connected to the upper end of the piston rod (104) through threads, an upper bushing (106) is arranged in the upper lifting ring (105), and a buffer block (19) is arranged outside the piston rod (104).
3. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: install second O type circle (26) between oil storage section of thick bamboo (103) and end cover (4), and form the wall seal through second O type circle (26) between oil storage section of thick bamboo (103) and end cover (4), first clamping ring (6) and second clamping ring (17) are installed respectively to the junction of bag skin (7) and end cover (4) and piston (18), and seal the junction of bag skin (7) and end cover (4) and piston (18) through first clamping ring (6) and second clamping ring (17), and the outside of piston (18) is equipped with dust cover (15), be provided with first O type circle (16) between the inboard of piston (18) and piston rod (104), seal between the inboard of first O type circle (16) are used for piston (18) and piston rod (104), make bag skin (7) inside form sealed cavity (14).
4. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: the automatic height adjusting mechanism further comprises a lower spring (8) and a valve body upper end cover (20), the bottom end of the lower spring (8) is fixedly connected with the outer side of the oil storage cylinder (103), the valve body upper end cover (20) is fixedly connected with the oil storage cylinder (103) through a baffle, a valve body framework (11) is arranged above the lower spring (8), the upper end face of the lower spring (8) is in contact with the valve body framework (11), a valve body lower support (22) is arranged at the lower end of the valve body framework (11), and a lower baffle ring (9) is arranged between the valve body lower support (22) and the oil storage cylinder (103) and is blocked through the lower baffle ring (9).
5. An air spring composite damper with height automatic adjustment function according to claim 4, wherein: the upper end cover of the valve body is characterized in that a middle spring (21) is assembled between the lower baffle ring (9) and the valve body framework (11), the upper part of the middle spring (21) is in contact with the upper end cover (20) of the valve body, an upper baffle ring (13) is installed in the upper end cover (20) of the valve body, and an upper spring (12) is installed between the upper baffle ring (13) and the valve body framework (11).
6. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: one side of end cover (4) is opened there is first round hole, and air inlet valve (10) are assembled inside first round hole, are provided with third O type circle (5) between end cover (4) and air inlet valve (10), form seal structure through third O type circle (5) between end cover (4) and air inlet valve (10), and the one end of air inlet valve (10) is connected with air cock (3), and the downthehole grafting of air cock (3) has trachea (2).
7. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: the other side of the end cover (4) is provided with a second round hole, the exhaust valve (23) is assembled in the second round hole, a fourth O-shaped ring (24) is arranged between the end cover (4) and the exhaust valve (23), a sealing structure is formed between the end cover (4) and the exhaust valve (23) through the fourth O-shaped ring (24), and the other end of the exhaust valve (23) is connected with a nut (25) through threads.
8. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: an intake valve needle (1001) is mounted at the end of the intake valve (10).
9. An air spring composite damper with height automatic adjustment function according to claim 1, wherein: one end of the exhaust valve (23) is provided with an exhaust valve thimble (2301), and the other end of the exhaust valve (23) is provided with an exhaust hole (2302).
CN202310855837.3A 2023-07-12 2023-07-12 Air spring composite shock absorber with height automatic adjusting function Pending CN116733881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310855837.3A CN116733881A (en) 2023-07-12 2023-07-12 Air spring composite shock absorber with height automatic adjusting function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310855837.3A CN116733881A (en) 2023-07-12 2023-07-12 Air spring composite shock absorber with height automatic adjusting function

Publications (1)

Publication Number Publication Date
CN116733881A true CN116733881A (en) 2023-09-12

Family

ID=87915148

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310855837.3A Pending CN116733881A (en) 2023-07-12 2023-07-12 Air spring composite shock absorber with height automatic adjusting function

Country Status (1)

Country Link
CN (1) CN116733881A (en)

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