CN108730400B - Double-cylinder shock absorber for maintaining damping force and preventing cavitation distortion by using temperature control element - Google Patents

Double-cylinder shock absorber for maintaining damping force and preventing cavitation distortion by using temperature control element Download PDF

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Publication number
CN108730400B
CN108730400B CN201810512091.5A CN201810512091A CN108730400B CN 108730400 B CN108730400 B CN 108730400B CN 201810512091 A CN201810512091 A CN 201810512091A CN 108730400 B CN108730400 B CN 108730400B
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valve
piston
spring
piston rod
shock absorber
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CN108730400A (en
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吴志成
王曦
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Beijing University of Technology
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Beijing University of Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • F16F9/3405Throttling passages in or on piston body, e.g. slots
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/50Special 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
    • F16F9/52Special 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 in case of change of temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2228/00Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06Stiffness
    • F16F2228/066Variable stiffness

Abstract

The invention discloses a double-cylinder shock absorber which utilizes a temperature control element to maintain damping force and prevent cavitation distortion, and the technical scheme is as follows: after the working temperature rises, the curvature of the bimetal valve plate of the circulation valve in the piston valve system is reduced, and the opening of the circulation valve is increased. When the shock absorber is in a stretching working condition, the first spring seat releases the sealing of the first oil outlet of the piston; when the working temperature rises, the rigidity of the shape memory spring of the extension valve is increased, and the spring can be opened only by needing higher working oil pressure. After the working temperature rises, the curvature of the bimetallic valve plate of the compensating valve in the base valve system is reduced to increase the opening of the compensating valve. When the shock absorber is in a compression working condition, the second spring seat releases the sealing of the first oil outlet hole of the bottom valve; when the working temperature rises, the rigidity of the compression valve shape memory spring is increased, and the spring needs higher working oil pressure to be opened. The piston valve system and the base valve system can realize the change of the opening of the valve system according to the change of the temperature of the oil liquid so as to prevent cavitation distortion and adjust damping force.

Description

double-cylinder shock absorber for maintaining damping force and preventing cavitation distortion by using temperature control element
Technical Field
The invention relates to the technical field of vehicle vibration reduction, in particular to a double-cylinder bidirectional-action temperature control vibration absorber.
Background
To improve the ride comfort of the vehicle, hydraulic dampers in vehicle suspensions are typically mounted in parallel with spring elements. The working principle of the hydraulic shock absorber is that when the frame (or the vehicle body) and the axle are vibrated to generate relative motion, a piston in the shock absorber moves up and down, oil in a cavity of the shock absorber repeatedly flows into the other cavity from one cavity through different pores, and at the moment, the friction between a pore wall and the oil and the internal friction between oil molecules form damping force on the vibration, so that the vibration energy of the vehicle is converted into oil heat energy, and then the oil heat energy is absorbed by the shock absorber and dissipated into the atmosphere, thereby realizing the shock absorption effect. When the cross section and the like of the oil passage are not changed, the damping force is changed along with the increase and decrease of the relative movement speed between the vehicle frame and the vehicle axle (or the vehicle wheel) and is related to the viscosity of the oil.
The traditional double-tube type shock absorber is internally provided with an extension valve, a flow valve, a compensation valve and a compression valve, and the damping force of the shock absorber is mainly provided by the extension valve. The damping characteristics of the extension valve are preset and not controllable. However, in the running process of the automobile, along with the jolt of the automobile, the vibration energy of the automobile is converted into heat energy of oil in large quantity, so that the temperature of the oil of the shock absorber is increased. Because the viscosity of the working oil of the shock absorber is reduced along with the increase of the working temperature, the shock absorber is easy to generate cavitation distortion, and the damping force of the shock absorber is also reduced along with the increase of the working temperature. Therefore, the shock absorber needs to increase the opening of the circulating valve and the compensating valve when the temperature of the working oil rises, and simultaneously increase the damping force of the extension valve, so that the automobile suspension system has better performance.
Some temperature control appliances employ a shape memory alloy spring or a bimetallic strip, such as an electric water heater. However, the spring and the bimetallic strip only transmit movement, the maximum stress is small, the spring and the bimetallic strip cannot be directly applied to the shock absorber, and research and design are needed again.
disclosure of Invention
The purpose of the invention is: in order to improve the running smoothness of the automobile, a double-cylinder shock absorber which utilizes a temperature control element to maintain damping force and prevent cavitation distortion is provided.
The technical scheme of the invention is as follows: a dual tube shock absorber for maintaining damping force and preventing cavitation distortion utilizing a temperature control element, comprising: a piston rod assembly, a cylinder barrel assembly and a valve system assembly;
the piston rod assembly is installed in the cylinder assembly, and the piston rod assembly includes: a piston rod axially moving in the cylinder assembly;
the valve train assembly includes: a piston valve system and a base valve system; wherein:
the piston valve system is installed on the piston rod, includes: the device comprises a flow valve butterfly spring, a piston sleeved with a piston ring, a flow valve bimetal valve plate, an expansion valve shape memory spring, a first spring seat and a first tightening nut installed at the bottom of the telescopic end of a piston rod; the top surface of the piston is sequentially provided with a first piston oil outlet hole, an annular bulge, a second piston oil outlet hole and an annular piston clamping groove from inside to outside; the piston is arranged on the telescopic end of the piston rod; the telescopic end of the piston rod is provided with a stretching valve shape memory spring through a first spring seat; the piston is in abutting connection with the first tightening nut through a stretching valve shape memory spring, and the first oil outlet hole of the piston is sealed by the first spring seat; a first one-way valve formed by the double-metal valve plate of the circulation valve and the butterfly spring of the circulation valve is sleeved on the telescopic end of the piston rod, one end of the double-metal valve plate of the circulation valve is clamped in the annular clamping groove of the piston, and the middle part of the double-metal valve plate of the circulation valve is in sealing contact with the annular bulge of the piston;
The base valve system is installed in cylinder assembly bottom, includes: the compensating valve comprises a compensating valve butterfly spring, a compression valve shape memory spring, a bottom valve seat, a compensating valve bimetal valve plate and a second tightening nut; the center of the top surface of the bottom valve seat is provided with a T-shaped boss, the top surface of the bottom valve seat is sequentially provided with a first bottom valve oil outlet hole, a bottom valve annular bulge, a second bottom valve oil outlet hole and a bottom valve annular clamping groove from inside to outside, and the center of the bottom valve seat is provided with a connecting rod; the bottom of the connecting rod is connected with a second tightening nut, and a compression valve shape memory spring is installed on the connecting rod through a second spring seat; the bottom valve seat is in abutting connection with the second tightening nut through a compression valve shape memory spring, and the second spring seat seals the first oil outlet hole of the bottom valve; the compensation valve bimetal valve plate and the compression valve shape memory spring form a second one-way valve which is sleeved on the T-shaped boss, one end of the compensation valve bimetal valve plate is clamped in the bottom valve annular clamping groove, and the middle part of the compensation valve bimetal valve plate is in sealing contact with the bottom valve annular bulge.
The working principle of the piston valve system is as follows: the piston divides the inner cylinder of the total components of the cylinder barrel into an upper cavity and a lower cavity; the first check valve formed by the double-metal valve plate of the flow valve and the butterfly spring of the flow valve can only allow the working oil in the lower cavity to be led to the upper cavity, namely, the first check valve is only opened under the compression working condition of the shock absorber. After the working temperature rises, the curvature of the bimetal valve plate of the circulation valve can be reduced and tends to be straight, so that the opening degree of the circulation valve is increased, and the aim of preventing the cavitation distortion of the shock absorber is fulfilled. When the shock absorber is in a stretching working condition, the middle part of the bimetallic valve plate of the through valve is separated from the annular bulge of the piston, oil is injected into the first oil outlet hole of the piston from the second oil outlet hole of the piston, and when the pressure of the oil is greater than the pre-tightening force of the shape memory spring of the stretching valve, the first spring seat releases the sealing of the first oil outlet hole of the piston; when the working temperature rises, the rigidity of the shape memory spring of the extension valve is increased, and the spring can be opened only by higher working oil pressure, so that the damping force is increased, and the aim of keeping the resistance of the shock absorber stable is fulfilled.
The working principle of the base valve system is as follows: the bottom valve seat divides the cylinder barrel assembly into an outer barrel part and an inner barrel part; the second one-way valve formed by the bimetallic valve plate of the compensating valve and the shape memory spring of the compression valve can only allow the working oil of the outer cylinder to lead to the inner cylinder, namely, the second one-way valve is opened only under the expansion working condition of the shock absorber. After the working temperature rises, the curvature of the bimetallic valve plate of the compensating valve can be reduced and tends to be straight, so that the opening degree of the compensating valve is increased, and the aim of preventing the shock absorber from cavitation and distortion is fulfilled. When the shock absorber is in a compression working condition, the middle part of the bimetallic valve plate of the compensating valve is separated from the annular bulge of the bottom valve, oil enters the first oil outlet hole of the bottom valve from the second oil outlet hole of the bottom valve, and the second spring seat removes the sealing of the first oil outlet hole of the bottom valve after the oil pressure is greater than the pre-tightening force of the shape memory spring of the compression valve; when the working temperature rises, the rigidity of the shape memory spring of the compression valve is increased, and the spring can be opened only by higher working oil pressure, so that the damping force is increased, and the aim of keeping the resistance of the shock absorber stable is fulfilled.
in the above-mentioned scheme, specifically, the piston rod assembly still includes: the earring is connected with the fixed end of the piston rod, and the guider is sleeved on the piston rod; an antifriction sleeve is arranged between the guider and the piston rod.
The cylinder assembly includes: the oil storage cylinder barrel, the working cylinder barrel and the cylinder seat are arranged on the cylinder base; the bottom of the oil storage cylinder barrel is connected with the cylinder seat; the oil storage cylinder is sleeved outside the piston rod, and the contact position is sealed by an oil seal; the guider is connected with the inner wall of the oil storage cylinder barrel; the working cylinder barrel is positioned between the oil storage cylinder barrel and the piston rod, and the upper end and the lower end of the working cylinder barrel are respectively connected with the guider and the bottom valve seat.
Further, the dual tube shock absorber further comprises: a dust cover and a dust cover; the dust cover covers and connects outside the oil storage cylinder, and the upper end covers has dust cover lid.
Has the advantages that:
(1) According to the invention, through the reciprocating motion of the piston, oil is promoted to flow in a reciprocating manner among the upper cavity and the lower cavity of the outer cylinder, the inner cylinder and the inner cylinder, and damping force is generated when the oil flows through the valve system assembly. The piston valve system and the base valve system can realize the change of the opening of the valve system according to the change of the temperature of the oil liquid so as to prevent cavitation distortion and adjust damping force.
(2) The dual-cylinder shock absorber has the advantages that damping control is simple, maintenance is convenient, the execution of the damping adjusting function of the dual-cylinder shock absorber for maintaining damping force and preventing cavitation distortion by using the temperature control element can be automatically realized only by the temperature change of working liquid of the shock absorber, and the control is simple.
drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a middle piston valve system according to the present invention;
FIG. 3 is a schematic view of a front base valve system according to the present invention;
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings and examples.
referring to fig. 1, the present embodiment provides a dual tube shock absorber for maintaining damping force and preventing cavitation distortion using a temperature control element, comprising: a piston rod assembly, a cylinder barrel assembly and a valve system assembly;
the piston rod assembly is installed in the cylinder assembly, and the piston rod assembly includes: a piston rod 5 axially moving in the cylinder assembly;
The valve train assembly includes: a piston valve system and a base valve system; wherein:
Referring to fig. 2, the piston valve train is mounted on the piston rod 5 and comprises: the hydraulic control valve comprises a flow valve butterfly spring 9, a piston 10 sleeved with a piston ring 11, a flow valve bimetal valve plate 17, an expansion valve shape memory spring 18, a first spring seat 19 and a first tightening nut installed at the bottom of the telescopic end of a piston rod 5; the top surface of the piston 10 is sequentially provided with a first piston oil outlet, an annular piston bulge, a second piston oil outlet and an annular piston clamping groove from inside to outside; the piston 10 is arranged on the telescopic end of the piston rod 5; a stretching valve shape memory spring 18 is arranged on the telescopic end of the piston rod 5 through a first spring seat 19; the piston 10 is in abutting connection with the first tightening nut through a stretching valve shape memory spring 18, and a first oil outlet of the piston is sealed by a first spring seat 19; a first one-way valve formed by the double-metal valve plate 17 of the circulation valve and the butterfly spring 9 of the circulation valve is sleeved on the telescopic end of the piston rod 5, one end of the double-metal valve plate 17 of the circulation valve is clamped in the annular clamping groove of the piston, and the middle part of the double-metal valve plate 17 of the circulation valve is in sealing contact with the annular bulge of the piston;
Referring to fig. 3, the base valve system is installed at the bottom of the cylinder assembly and includes: the compensating valve butterfly spring 12, the compression valve shape memory spring 13, the bottom valve seat 14, the compensating valve bimetal valve plate 20 and the second tightening nut 21; a T-shaped boss is arranged at the center of the top surface of the bottom valve seat 14, a first bottom valve oil outlet hole, a bottom valve annular bulge, a second bottom valve oil outlet hole and a bottom valve annular clamping groove are sequentially formed in the top surface of the bottom valve seat 14 from inside to outside, and a connecting rod is arranged at the center of the bottom valve seat 14; the bottom of the connecting rod is connected with a second tightening nut 21, and a compression valve shape memory spring 13 is arranged on the connecting rod through a second spring seat; the bottom valve seat 14 is in abutting connection with the second tightening nut 21 through a compression valve shape memory spring 13, and the second spring seat seals the first oil outlet hole of the bottom valve; the compensation valve bimetal valve plate 20 and the compression valve shape memory spring 13 form a second one-way valve which is sleeved on the T-shaped boss, one end of the compensation valve bimetal valve plate 20 is clamped in the bottom valve annular clamping groove, and the middle part of the compensation valve bimetal valve plate 20 is in sealing contact with the bottom valve annular bulge.
The working principle of the piston valve system is as follows: the piston 10 divides the inner cylinder of the total components of the cylinder barrel into an upper cavity and a lower cavity; the first check valve formed by the double-metal valve plate 17 of the flow valve and the butterfly spring 9 of the flow valve can only allow the working oil in the lower cavity to be led to the upper cavity, namely, the first check valve is only opened under the compression working condition of the shock absorber. After the working temperature rises, the curvature of the bimetal valve plate 17 of the circulating valve can be reduced and tends to be straight, so that the opening degree of the circulating valve is increased, and the aim of preventing the shock absorber from cavitation and distortion is fulfilled. When the shock absorber is in a stretching working condition, the middle part of the bimetallic valve plate 17 of the through valve is separated from the annular bulge of the piston, oil is injected into the first oil outlet hole of the piston from the second oil outlet hole of the piston, and when the pressure of the oil is greater than the pre-tightening force of the shape memory spring 18 of the stretching valve, the first spring seat 19 releases the sealing of the first oil outlet hole of the piston; when the working temperature rises, the rigidity of the shape memory spring 18 of the extension valve is increased, and the spring can be opened only by needing higher working oil pressure, so that the damping force is increased, and the aim of keeping the resistance of the shock absorber stable is fulfilled.
The working principle of the base valve system is as follows: the bottom valve seat 14 divides the cylinder barrel assembly into an outer barrel part and an inner barrel part; the second one-way valve composed of the compensation valve bimetal valve plate 20 and the compression valve shape memory spring 13 can only allow the working oil of the outer cylinder to lead to the inner cylinder, namely, the second one-way valve is opened only under the expansion working condition of the shock absorber. After the working temperature rises, the curvature of the bimetallic valve plate 20 of the compensating valve is reduced and tends to be straight, so that the opening degree of the compensating valve is increased, and the aim of preventing the shock absorber from cavitation and distortion is fulfilled. When the shock absorber is in a compression working condition, the middle part of the bimetallic valve plate 20 of the compensating valve is separated from the annular bulge of the bottom valve, oil enters the first oil outlet hole of the bottom valve from the second oil outlet hole of the bottom valve, and when the oil pressure is greater than the pre-tightening force of the shape memory spring 13 of the compression valve, the second spring seat releases the sealing of the first oil outlet hole of the bottom valve; when the working temperature rises, the rigidity of the compression valve shape memory spring 13 is increased, and the spring can be opened only by needing higher working oil pressure, so that the damping force is increased, and the aim of keeping the resistance of the shock absorber stable is fulfilled.
In the above-mentioned scheme, specifically, the piston rod assembly still includes: the earring 1 is connected with the fixed end of the piston rod 5, and the guider 4 is sleeved on the piston rod 5; an anti-friction sleeve 16 is arranged between the guider 4 and the piston rod 5.
the cylinder assembly includes: an oil storage cylinder barrel 7, a working cylinder barrel 6 and a cylinder seat 15; the bottom of the oil storage cylinder barrel 7 is connected with a cylinder seat 15; the oil storage cylinder barrel 7 is sleeved outside the piston rod 5, and the contact part is sealed by the oil seal 3; the guider 4 is connected with the inner wall of the oil storage cylinder 7; the working cylinder 6 is positioned between the oil storage cylinder 7 and the piston rod 5, and the upper end and the lower end of the working cylinder are respectively connected with the guider 4 and the bottom valve seat 14.
Further, the dual tube shock absorber further comprises: a dust cover 2 and a dust cover 8; the dust cover 8 covers the outside of the oil storage cylinder barrel 7, and the upper end of the dust cover is covered with the dust cover 2.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (4)

1. utilize the double-cylinder shock absorber of temperature control element maintenance damping force and prevent cavitation distortion, its characterized in that: it includes: a piston rod assembly, a cylinder barrel assembly and a valve system assembly;
the piston rod assembly is installed in the cylinder assembly, the piston rod assembly includes: a piston rod (5) axially moving in the cylinder assembly;
the valve train assembly comprises: a piston valve system and a base valve system; wherein:
The piston valve train is mounted on the piston rod (5) and comprises: the device comprises a flow valve butterfly spring (9), a piston (10) sleeved with a piston ring (11), a flow valve bimetal valve plate (17), an expansion valve shape memory spring (18), a first spring seat (19) and a first tightening nut arranged at the bottom of the telescopic end of a piston rod (5); the top surface of the piston (10) is sequentially provided with a first piston oil outlet hole, an annular piston bulge, a second piston oil outlet hole and an annular piston clamping groove from inside to outside; the piston (10) is arranged on the telescopic end of the piston rod (5); the expansion valve shape memory spring (18) is mounted on the telescopic end of the piston rod (5) through the first spring seat (19); the piston (10) is in abutting connection with the first tightening nut through the expansion valve shape memory spring (18), and the first oil outlet of the piston is sealed by the first spring seat (19); the double-metal valve plate (17) of the circulation valve and the butterfly spring (9) of the circulation valve form a first one-way valve which is sleeved on the telescopic end of the piston rod (5), one end of the double-metal valve plate (17) of the circulation valve is clamped in the annular clamping groove of the piston, and the middle part of the double-metal valve plate (17) of the circulation valve is in sealing contact with the annular bulge of the piston;
After the working temperature rises, the curvature of the bimetal valve plate of the circulation valve is reduced and tends to be straight, so that the opening degree of the circulation valve is increased; meanwhile, when the working temperature rises, the rigidity of the shape memory spring of the extension valve is increased;
the base valve system is installed in cylinder assembly bottom, includes: the valve comprises a compensation valve butterfly spring (12), a compression valve shape memory spring (13), a base valve seat (14), a compensation valve bimetal valve plate (20) and a second tightening nut (21); the center of the top surface of the bottom valve seat (14) is provided with a T-shaped boss, the top surface of the bottom valve seat (14) is sequentially provided with a bottom valve first oil outlet hole, a bottom valve annular bulge, a bottom valve second oil outlet hole and a bottom valve annular clamping groove from inside to outside, and the center of the bottom valve seat (14) is provided with a connecting rod; the bottom of the connecting rod is connected with the second tightening nut (21), and the compression valve shape memory spring (13) is mounted on the connecting rod through a second spring seat; the bottom valve seat (14) is in abutting connection with the second tightening nut (21) through the compression valve shape memory spring (13), and the second spring seat seals the first oil outlet hole of the bottom valve; the compensation valve bimetal valve plate (20) and the compression valve shape memory spring (13) form a second one-way valve which is sleeved on the T-shaped boss, one end of the compensation valve bimetal valve plate (20) is clamped in the bottom valve annular clamping groove, and the middle part of the compensation valve bimetal valve plate (20) is in sealing contact with the bottom valve annular bulge;
after the working temperature rises, the curvature of the bimetallic valve plate of the compensating valve is reduced and tends to be straight, so that the opening degree of the compensating valve is increased; meanwhile, when the working temperature is increased, the rigidity of the compression valve shape memory spring is increased.
2. The dual tube shock absorber with temperature control element for maintaining damping force and preventing cavitation distortion of claim 1, wherein: the piston rod assembly further comprises: the earring (1) is connected with the fixed end of the piston rod (5), and the guider (4) is sleeved on the piston rod (5); an anti-friction sleeve (16) is arranged between the guider (4) and the piston rod (5).
3. The dual tube shock absorber with temperature control element for maintaining damping force and preventing cavitation distortion of claim 2, wherein: the cylinder assembly includes: an oil storage cylinder barrel (7), a working cylinder barrel (6) and a cylinder seat (15); the bottom of the oil storage cylinder barrel (7) is connected with the cylinder base (15); the oil storage cylinder barrel (7) is sleeved outside the piston rod (5), and the contact part is sealed by the oil seal (3); the guider (4) is connected with the inner wall of the oil storage cylinder barrel (7); the working cylinder barrel (6) is located between the oil storage cylinder barrel (7) and the piston rod (5), and the upper end and the lower end of the working cylinder barrel are respectively connected with the guider (4) and the bottom valve seat (14).
4. The dual tube shock absorber with temperature control element for maintaining damping force and preventing cavitation distortion of claim 3, wherein: the dual tube shock absorber further comprises: a dust cover (2) and a dust cover (8); the dustproof cover (8) is covered outside the oil storage cylinder (7), and the upper end of the dustproof cover is covered with the dustproof cover cap (2).
CN201810512091.5A 2018-05-25 2018-05-25 Double-cylinder shock absorber for maintaining damping force and preventing cavitation distortion by using temperature control element Active CN108730400B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220099155A1 (en) * 2019-01-29 2022-03-31 Suspa Gmbh Temperature compensating valve for gas springs
CN110552989A (en) * 2019-09-24 2019-12-10 杭州金士顿实业有限公司 Compression valve structure of large-flow compensation channel and working method thereof
CN113983103A (en) * 2021-11-26 2022-01-28 山东理工大学 Vibration energy collection and vibration reduction optimization device for automotive suspension

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US4273220A (en) * 1978-07-20 1981-06-16 Yamaha Hatsudoki Kabushiki Kaisha Oleo dampers having variable orifices
CN101994774A (en) * 2010-10-13 2011-03-30 成都九鼎科技(集团)有限公司 Lateral damper with double-acting valve structure
CN201944178U (en) * 2011-03-03 2011-08-24 北京吉信气弹簧制品有限公司 Assistance supporting bar gas spring of memory-alloy low-temperature balanced structure
CN103867625A (en) * 2013-11-26 2014-06-18 徐州工程学院 Rope type self-reset shape memory alloy seismic isolation and seismic reduction support
CN106438821A (en) * 2016-07-14 2017-02-22 西格迈股份有限公司 Barrel type hydraulic shock absorber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273220A (en) * 1978-07-20 1981-06-16 Yamaha Hatsudoki Kabushiki Kaisha Oleo dampers having variable orifices
CN101994774A (en) * 2010-10-13 2011-03-30 成都九鼎科技(集团)有限公司 Lateral damper with double-acting valve structure
CN201944178U (en) * 2011-03-03 2011-08-24 北京吉信气弹簧制品有限公司 Assistance supporting bar gas spring of memory-alloy low-temperature balanced structure
CN103867625A (en) * 2013-11-26 2014-06-18 徐州工程学院 Rope type self-reset shape memory alloy seismic isolation and seismic reduction support
CN106438821A (en) * 2016-07-14 2017-02-22 西格迈股份有限公司 Barrel type hydraulic shock absorber

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