CN112240369A - Valve device with adjustable compression damping - Google Patents

Valve device with adjustable compression damping Download PDF

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Publication number
CN112240369A
CN112240369A CN202011165388.2A CN202011165388A CN112240369A CN 112240369 A CN112240369 A CN 112240369A CN 202011165388 A CN202011165388 A CN 202011165388A CN 112240369 A CN112240369 A CN 112240369A
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CN
China
Prior art keywords
valve
pressure
low
sleeve
pin
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.)
Pending
Application number
CN202011165388.2A
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Chinese (zh)
Inventor
王鹏
刘向
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.)
Nanyang Weiao Situ Vehicle Shock Absorber Co ltd
Shanghai Xijian Automobile Suspension Co ltd
Nanyang Cijan Auto Shock Absorber Co Ltd
Original Assignee
Shanghai Xijian Automobile Suspension 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 Shanghai Xijian Automobile Suspension Co ltd filed Critical Shanghai Xijian Automobile Suspension Co ltd
Priority to CN202011165388.2A priority Critical patent/CN112240369A/en
Publication of CN112240369A publication Critical patent/CN112240369A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • 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
    • F16F9/34—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
    • F16F9/50—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
    • 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
    • F16F9/54—Arrangements for attachment

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

The invention relates to a valve device with adjustable compression damping, which comprises a valve seat, a valve sleeve, a valve body, a valve rod, a low-pressure valve pin, a high-pressure valve pin and a slide valve assembly, wherein a plurality of flow guide holes are formed in the circumferential array of the side wall of the valve sleeve; a shock absorber group for resisting vehicle roll comprises two shock absorbers, wherein each shock absorber comprises an oil storage cylinder, a working cylinder, an intermediate cylinder and a valve device. The invention aims to solve or at least alleviate the problems that a traditional compression valve depends on an electric control system and a sensor, the product cost is high, and the system reliability is low, and provides a valve device with adjustable compression damping.

Description

Valve device with adjustable compression damping
Technical Field
The invention relates to the technical field of shock absorbers, in particular to a valve device with adjustable compression damping.
Background
The compression valve system of the double-cylinder hydraulic shock absorber commonly seen in the market at present is generally composed of a compensating valve and a compression valve, when the shock absorber is in a compression stroke, oil can only flow out through a flow valve and the compression valve to generate damping force, the structure, the manufacturing process and the assembly process of the compression valve are simple and become the mainstream of the current hydraulic shock absorber valve system, but the defects are obvious, the unicity of an oil passage also determines that the compression damping force value of the structure can not be adjusted after the shock absorber is assembled, and therefore the comfort and the controllability of a vehicle can not be considered.
The shock absorber with adjustable compression damping in the market at present is mainly an active or semi-active electronic control shock absorber, for example, a plurality of electromagnetic valve shock absorbers and magneto-rheological shock absorbers are applied, however, the adjustment of the compression damping force of the semi-active or active shock absorber depends on an electronic control system and a sensor, so that the product cost is greatly improved on one hand, and the system reliability is reduced on the other hand.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, solve or at least reduce the problems that the traditional compression valve depends on an electric control system and a sensor, has high product cost and low system reliability, and provides a valve device with adjustable compression damping.
The invention is realized by the following technical scheme: a valve device with adjustable compression damping comprises a valve seat, a valve sleeve, a valve body, a valve rod, a low-pressure valve pin, a high-pressure valve pin and a slide valve assembly, wherein the valve sleeve is in a circular tube shape, the valve body and the valve seat are respectively positioned at the upper end and the lower end of the valve sleeve, and the valve rod which is used for fastening the valve seat, the valve sleeve and the valve body into a whole penetrates through the valve body from top to bottom and is sleeved on the valve seat in a threaded manner;
the valve body is provided with a low-pressure valve hole and a high-pressure valve hole, and the outer wall of the valve body is connected with the inner wall of the valve sleeve in a sealing manner;
the valve seat is characterized in that a boss is arranged at the upper part of the valve seat, the boss is sleeved in the valve sleeve and is longitudinally provided with a first counter bore, the upper surface of the boss is attached to the lower surface of the valve body in a sealing manner, a second counter bore is arranged at the lower part of the valve seat in the radial direction and is correspondingly arranged below the first counter bore, the outer wall of the lower part of the valve seat is connected with the inner wall of the valve sleeve in a sealing manner, the space formed in the first counter bore is a low-pressure valve cavity, the space between the boss and the valve sleeve is a high-pressure valve cavity, the space formed in the second counter bore is a sliding valve cavity, the sliding valve cavity is communicated to the low;
the valve sleeve is characterized in that a plurality of flow guide holes are formed in the circumferential array of the side wall of the valve sleeve, the lower ends of the flow guide holes are communicated to the high-pressure valve cavity, and the upper ends of the flow guide holes are communicated to the outer side of the upper end of the valve sleeve;
the low-pressure valve pin and the high-pressure valve pin are axially arranged on the upper part of the valve seat in a sliding manner through springs, the low-pressure valve pin and the high-pressure valve pin are respectively positioned in the low-pressure valve cavity and the high-pressure valve cavity, the upper part of the low-pressure valve pin and the upper part of the high-pressure valve pin are respectively arranged in the low-pressure valve hole and the high-pressure valve hole in a sealing and sliding manner, and the upper part of the low-;
the sliding valve assembly is positioned in the sliding valve cavity and used for controlling the opening and closing of the low-pressure communication hole.
In order to further implement the present invention, the following technical solutions may be preferably selected:
preferably, the valve rod is further sleeved with a limiter, a gasket and a compensation valve plate, the limiter, the gasket and the compensation valve plate are sequentially stacked above the valve body from top to bottom, the valve body is provided with a plurality of compensation holes, and the compensation holes are located below the compensation valve plate.
Preferably, a positioning mechanism is arranged between the valve body and the valve seat and comprises an upper positioning counter bore, a lower positioning counter bore and a positioning pin, the upper positioning counter bore and the lower positioning counter bore are respectively located on the lower side of the valve body and the upper side of the boss, the upper portion of the positioning pin is located in the upper positioning counter bore, and the lower portion of the positioning pin is located in the lower positioning counter bore.
Preferably, the drainage hole at the upper part of the low-pressure valve pin or the high-pressure valve pin comprises a vertical section and a horizontal section, the upper end of the vertical section is communicated to the upper end surface of the low-pressure valve pin or the high-pressure valve pin, the lower end of the vertical section is communicated to the inner end of the horizontal section, and the outer end of the horizontal section is communicated to the side wall of the low-pressure valve pin or the.
Preferably, the slide valve assembly comprises a slide valve sleeve and a slide valve core, the slide valve sleeve is fixedly arranged in the slide valve cavity, the outer side of the circumference of the slide valve sleeve is in a step shape, the higher end of the outer side of the slide valve sleeve is fixedly connected with the slide valve cavity in a sealing manner, the lower end of the outer side of the slide valve sleeve is correspondingly arranged at the communication position of the low-pressure communication hole and the slide valve cavity and is radially provided with a through hole, the slide valve core is arranged in the slide valve sleeve in a sliding manner, and a spring is arranged between the end, facing.
The utility model provides a shock absorber group that anti vehicle heeled, includes two shock absorbers, the shock absorber includes oil storage cylinder, working cylinder, middle jar and valve gear, oil storage cylinder inner wall and valve barrel outer wall sealing connection, the working cylinder lower extreme supports to valve barrel and working cylinder outer wall and valve barrel inner wall sealing connection, the coaxial cover of middle jar is in working cylinder and middle jar lower terminal surface sealing laminating to valve barrel up end, guiding hole upper end is located between middle jar and the oil storage cylinder.
Preferably, the valve sleeve is circumferentially arrayed with a plurality of interaction holes, the upper ends of the interaction holes are communicated to the upper end face of the valve sleeve and are positioned between the working cylinder and the middle cylinder, and the lower ends of the interaction holes are communicated to the outer side of the side wall of the valve sleeve.
Preferably, the lower end of the interaction hole of the valve sleeve and the outer end of the spool chamber of the valve device of one of the shock absorbers are respectively communicated with the outer end of the spool chamber of the valve device of the other shock absorber and the lower end of the interaction hole of the valve sleeve.
Through the technical scheme, the invention has the beneficial effects that:
compared with the traditional shock absorber, the oil liquid circulation channel of the compression valve in the compression stroke of the shock absorber is provided with the low-pressure valve channel and the high-pressure valve channel, when the shock absorber runs at low speed, the low-pressure valve channel is opened, the high-pressure valve channel is closed, but when wheels are impacted and the shock absorber runs at high speed, the high-pressure valve is also opened, so that the shock absorber is protected, the high-speed damping force can be reduced, the impact on a vehicle body and passengers is reduced, and the comfort of the whole vehicle is improved.
Compared with the traditional shock absorber, the low-pressure oil pump can control the flow of the low-pressure communication hole through the slide valve to further adjust the compression damping force, control the flow of the low-pressure communication hole through controlling the slide of the slide valve core to change the compression damping force, and control the power source of the slide valve core to be the central control oil pump.
The two shock absorbers adopting the valve device can be mutually connected, oil can enter the middle cylinder through the hole of the upper cavity of the working cylinder during the stretching stroke of the shock absorbers, then flows to the slide valve cavity of the other shock absorber through the interaction hole, and further controls the opening and closing of the low-pressure communication hole, so that the effect of increasing the compression damping force of the other shock absorber by stretching the shock absorber is achieved, the anti-roll capability of a vehicle is further improved, the stabilizer bar can be omitted, and the cost and the weight of the whole vehicle are reduced.
The invention can realize the self-adaptive adjustment of the compression damping force directly through three oil pipes in the passive suspension without the control of an electric control suspension, thereby being superior to the existing electromagnetic valve shock absorber, magneto-rheological shock absorber and the like in price.
Drawings
FIG. 1 is a structural cross-sectional view of a valve assembly of the present invention;
FIG. 2 is an exploded view of the construction of the valve assembly of the present invention;
fig. 3 is a structural cross-sectional view of the valve sleeve of the present invention;
FIG. 4 is a schematic structural view of the valve body of the present invention;
FIG. 5 is a schematic view of the valve seat of the present invention;
FIG. 6 is a structural cross-sectional view of a valve seat of the present invention;
FIG. 7 is a second structural cross-sectional view of the valve seat of the present invention;
FIG. 8 is a cross-sectional view of the construction of the low pressure valve pin of the present invention;
FIG. 9 is a structural cross-sectional view of a high pressure valve pin of the present invention;
FIG. 10 is a schematic view of the slide valve assembly of the present invention;
FIG. 11 is a schematic structural view of the shock absorber of the present invention;
wherein: 1-a valve seat; 2-valve housing; 3-a valve body; 4-a valve stem; 5-a low pressure valve pin; 6-a high pressure valve pin; 7-a boss; 8-a slide valve sleeve; 9-spool; 10-a stopper; 11-a gasket; 12-a compensation valve plate; 13-a locating pin; 14-oil storage cylinder; 15-a working cylinder; 16-intermediate cylinder; 17-a low pressure valve bore; 18-a high pressure valve bore; 19-a low pressure valve cavity; 20-high pressure valve cavity; 21-a sliding valve cavity; 22-low pressure communication hole; 23-high pressure communicating hole; 24-diversion holes; 25-drainage holes; 26-compensation holes; 27-alternating holes.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 11, a valve device with adjustable compression damping comprises a valve seat 1, a valve sleeve 2, a valve body 3, a valve rod 4, a low-pressure valve pin 5, a high-pressure valve pin 6 and a slide valve assembly, wherein the valve sleeve 2 is in a circular tube shape, the valve body 3 and the valve seat 1 are respectively positioned at the upper end and the lower end of the valve sleeve 2, and the valve rod 4 for fastening the valve seat 1, the valve sleeve 2 and the valve body 3 into a whole penetrates through the valve body 3 from top to bottom and is sleeved on the valve seat 1;
the valve body 3 is provided with a low-pressure valve hole 17 and a high-pressure valve hole 18, and the outer wall of the valve body 3 is hermetically connected with the inner wall of the valve sleeve 2;
the upper part of the valve seat 1 is provided with a boss 7, the boss 7 is sleeved in the valve sleeve 2 and is longitudinally provided with a first counter bore, the upper surface of the boss 7 is hermetically attached to the lower surface of the valve body 3, the lower part of the valve seat 1 is radially provided with a second counter bore, the second counter bore is correspondingly arranged below the first counter bore, the outer wall of the lower part of the valve seat 1 is hermetically connected with the inner wall of the valve sleeve 2, the space formed in the first counter bore is a low-pressure valve cavity 19, the space between the boss 7 and the valve sleeve 2 is a high-pressure valve cavity 20, the space formed in the second counter bore is a sliding valve cavity 21, the sliding valve cavity 21 is communicated to the low-pressure valve cavity 19 and the high-pressure valve;
a plurality of diversion holes 24 are formed in the circumferential array of the side wall of the valve sleeve 2, the lower ends of the diversion holes 24 are communicated to the high-pressure valve cavity 20, and the upper ends of the diversion holes are communicated to the outer side of the upper end of the valve sleeve 2;
the low-pressure valve pin 5 and the high-pressure valve pin 6 are axially arranged on the upper part of the valve seat 1 in a sliding manner through springs, the low-pressure valve pin 5 and the high-pressure valve pin 6 are respectively positioned in the low-pressure valve cavity 19 and the high-pressure valve cavity 20, the upper part of the low-pressure valve pin 5 and the upper part of the high-pressure valve pin 6 are respectively arranged in the low-pressure valve hole 17 and the high-pressure valve hole 18 in a sealing and sliding manner, and the upper parts of the low-pressure valve;
the slide valve assembly is located in the slide valve cavity 21 and used for controlling opening and closing of the low-pressure communication hole 22, the slide valve assembly comprises a slide valve sleeve 8 and a slide valve core 9, the slide valve sleeve 8 is fixedly arranged in the slide valve cavity 21, the outer side of the circumference of the slide valve sleeve 8 is in a step shape, the higher end of the outer side of the slide valve sleeve 8 is fixedly connected with the slide valve cavity 21 in a sealing mode, the lower end of the outer side of the slide valve sleeve 8 is correspondingly arranged at the communication position of the low-pressure communication hole 22 and the slide valve cavity 21 and is provided with a through hole in the radial direction, the slide valve core 9 is arranged in the slide valve sleeve 8 in a sliding.
In order to optimize the product structure, in this embodiment, the valve rod 4 is further sleeved with a stopper 10, a gasket 11 and a compensation valve plate 12, the stopper 10, the gasket 11 and the compensation valve plate 12 are sequentially stacked above the valve body 3 from top to bottom, the valve body 3 is provided with a plurality of compensation holes 26, and the compensation holes 26 are located below the compensation valve plate 12.
In order to prevent the valve body 3 from rotating relative to the valve seat 1, a positioning mechanism is arranged between the valve body 3 and the valve seat 1, the positioning mechanism comprises an upper positioning counter bore, a lower positioning counter bore and a positioning pin 13, the upper positioning counter bore and the lower positioning counter bore are respectively positioned on the lower side of the valve body 3 and the upper side of the boss 7, the upper part of the positioning pin 13 is positioned in the upper positioning counter bore, and the lower part of the positioning pin is positioned in the lower positioning.
In order to ensure that when the low-pressure valve pin 5 or the high-pressure valve pin 6 is pressed down, oil liquid above the valve body 3 can flow into the low-pressure valve cavity 19 or the high-pressure valve cavity 20, the drainage hole 25 at the upper part of the low-pressure valve pin 5 or the high-pressure valve pin 6 comprises a vertical section and a horizontal section, the upper end of the vertical section is communicated to the upper end surface of the low-pressure valve pin 5 or the high-pressure valve pin 6, the lower end of the vertical section is communicated to the inner end of the horizontal section.
A shock absorber group for resisting vehicle side inclination comprises two shock absorbers, wherein each shock absorber comprises an oil storage cylinder 14, a working cylinder 15, an intermediate cylinder 16 and a valve device, the inner wall of each oil storage cylinder 14 is in sealing connection with the outer wall of a valve sleeve 2, the lower end of each working cylinder 15 abuts against the valve sleeve 2, the outer wall of each working cylinder 15 is in sealing connection with the inner wall of the valve sleeve 2, the intermediate cylinder 16 is coaxially sleeved on the working cylinders 15, the lower end face of each intermediate cylinder 16 is in sealing fit with the upper end face of the valve sleeve 2, and the upper ends of guide holes 24 are located between the intermediate cylinders.
The valve sleeve 2 is circumferentially arrayed with a plurality of interaction holes 27, the upper end of each interaction hole 27 is communicated with the upper end face of the valve sleeve 2 and is positioned between the working cylinder 15 and the middle cylinder 16, the lower end of each interaction hole 27 is communicated with the outer side of the side wall of the valve sleeve 2, and the lower end of the interaction hole 27 of the valve sleeve 2 and the outer end of the sliding valve cavity 21 of one valve device of one shock absorber are respectively communicated with the outer end of the sliding valve cavity 21 of the other shock absorber and the lower end of the.
The working process is as follows:
when the shock absorber is in a compression stroke, the first passage: the pressure of the lower cavity of the working cylinder 15 is increased to push the low-pressure valve pin 5 to descend, oil enters the low-pressure valve cavity 19 through the drainage hole 25 at the upper end of the low-pressure valve pin 5, then flows into the sliding valve cavity 21 through the low-pressure connecting through hole 22, flows into the high-pressure valve cavity 20 through the high-pressure connecting through hole 23, and further flows into the oil storage cylinder 14 through the flow guide hole 24; and a second channel: when the pressure of the lower cavity of the working cylinder 15 reaches a certain degree, the high-pressure valve pin 6 descends, and oil enters the high-pressure valve cavity 20 through the drainage hole 25 at the upper end of the high-pressure valve pin 6 and then flows into the oil storage cylinder 14 through the drainage hole 24.
When oil enters the outer end of the spool cavity 21, the oil pushes the spool 9 to move inwards, meanwhile, the outer side of the spool 9 gradually slides through holes in the outer side of the spool sleeve 8, the flow rate of the low-pressure communication holes 22 is changed, the compression damping force is adjusted, when the through holes in the outer side of the spool sleeve 8 are completely blocked, the low-pressure communication holes 22 are closed, the oil can only flow out through the high-pressure communication holes 23, and the compression damping force is increased rapidly.
When the shock absorber is in a stretching stroke, a negative pressure is formed in the cavity of the working cylinder 15, oil in the oil storage cylinder 14 flows into the high-pressure valve cavity 20 through the diversion hole 24, the compensation valve plate 12 is opened through the compensation hole 26 in the valve body 3 and flows into the lower cavity of the working cylinder 15, meanwhile, the oil in the upper cavity of the working cylinder 15 flows into the middle cylinder 16 through the side wall hole in the upper cavity of the working cylinder 15 and flows into the outer end of the sliding valve cavity 21 of the other shock absorber through the interaction hole 27, the compression damping force of the other shock absorber is increased through the stretching stroke of the shock absorber, and the anti-roll capability of.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. The valve device with the adjustable compression damping is characterized by comprising a valve seat (1), a valve sleeve (2), a valve body (3), a valve rod (4), a low-pressure valve pin (5), a high-pressure valve pin (6) and a slide valve assembly, wherein the valve sleeve (2) is in a circular tube shape, the valve body (3) and the valve seat (1) are respectively positioned at the upper end and the lower end of the valve sleeve (2), and the valve rod (4) which is used for fastening the valve seat (1), the valve sleeve (2) and the valve body (3) into a whole penetrates through the valve body (3) from top to bottom and is sleeved on the valve seat (1) in a threaded manner;
the valve body (3) is provided with a low-pressure valve hole (17) and a high-pressure valve hole (18), and the outer wall of the valve body (3) is connected with the inner wall of the valve sleeve (2) in a sealing manner;
a boss (7) is arranged at the upper part of the valve seat (1), the boss (7) is sleeved in the valve sleeve (2) and is longitudinally provided with a first counter bore, the upper surface of the boss (7) is hermetically attached to the lower surface of the valve body (3), a second counter bore is radially arranged at the lower part of the valve seat (1), the second counter bore is correspondingly arranged below the first counter bore, the outer wall of the lower part of the valve seat (1) is connected with the inner wall of the valve sleeve (2) in a sealing way, the space formed in the first counter bore is a low-pressure valve cavity (19), the space between the boss (7) and the valve sleeve (2) is a high-pressure valve cavity (20), the space formed in the second counter bore is a sliding valve cavity (21), the sliding valve cavity (21) is communicated to a low-pressure valve cavity (19) and a high-pressure valve cavity (20) through a low-pressure communication hole (22) and a high-pressure communication hole (23), the inner end of the sliding valve cavity (21) is closed, and the outer end of the sliding valve cavity is communicated to the outside of the valve sleeve (2);
the side wall of the valve sleeve (2) is circumferentially arrayed with a plurality of flow guide holes (24), the lower ends of the flow guide holes (24) are communicated to the high-pressure valve cavity (20), and the upper ends of the flow guide holes are communicated to the outer side of the upper end of the valve sleeve (2);
the low-pressure valve pin (5) and the high-pressure valve pin (6) are axially arranged on the upper portion of the valve seat (1) in a sliding mode through springs, the low-pressure valve pin (5) and the high-pressure valve pin (6) are respectively located in the low-pressure valve cavity (19) and the high-pressure valve cavity (20), the upper portion of the low-pressure valve pin (5) and the upper portion of the high-pressure valve pin (6) are respectively arranged in the low-pressure valve hole (17) and the high-pressure valve hole (18) in a sealing sliding mode, and drainage holes (25) are formed in the upper portion of the low-pressure valve;
the slide valve assembly is positioned in a slide valve cavity (21) and is used for controlling the opening and closing of a low-pressure communication hole (22).
2. The valve device with the adjustable compression damping as claimed in claim 1, characterized in that the valve rod (4) is further sleeved with a stopper (10), a gasket (11) and a compensation valve plate (12), the stopper (10), the gasket (11) and the compensation valve plate (12) are sequentially stacked and arranged above the valve body (3) from top to bottom, the valve body (3) is provided with a plurality of compensation holes (26), and the compensation holes (26) are located below the compensation valve plate (12).
3. The valve device with the adjustable compression damping as claimed in claim 1, characterized in that a positioning mechanism is arranged between the valve body (3) and the valve seat (1), the positioning mechanism comprises an upper positioning counter bore, a lower positioning counter bore and a positioning pin (13), the upper positioning counter bore and the lower positioning counter bore are respectively located on the lower side of the valve body (3) and the upper side of the boss (7), the upper portion of the positioning pin (13) is located in the upper positioning counter bore, and the lower portion of the positioning pin (13) is located in the lower positioning counter bore.
4. The valve device with adjustable compression damping as claimed in claim 1, wherein the drainage hole (25) at the upper part of the low pressure valve pin (5) or the high pressure valve pin (6) comprises a vertical section and a horizontal section, the upper end of the vertical section is communicated to the upper end surface of the low pressure valve pin (5) or the high pressure valve pin (6), the lower end of the vertical section is communicated to the inner end of the horizontal section, and the outer end of the horizontal section is communicated to the side wall of the low pressure valve pin (5) or the high pressure valve pin (6).
5. The valve device with the adjustable compression damping as claimed in claim 1, wherein the slide valve assembly comprises a slide valve sleeve (8) and a slide valve core (9), the slide valve sleeve (8) is fixedly arranged in the slide valve cavity (21), the outer side of the circumference of the slide valve sleeve (8) is stepped, the higher end of the outer side of the slide valve sleeve (8) is fixedly connected with the slide valve cavity (21) in a sealing manner, the lower end of the outer side of the slide valve sleeve (8) is correspondingly arranged at the communication position of the low-pressure communication hole (22) and the slide valve cavity (21) and is radially provided with a through hole, the slide valve core (9) is arranged in the slide valve sleeve (8) in a sliding manner, and a spring is arranged between the end of the slide valve core (9) facing the inner end of the slide valve cavity (21.
6. A shock absorber group for resisting vehicle side inclination, which is characterized by comprising two shock absorbers, wherein each shock absorber comprises an oil storage cylinder (14), a working cylinder (15), an intermediate cylinder (16) and the valve device with adjustable compression damping as claimed in any one of claims 1 to 5, the inner wall of the oil storage cylinder (14) is in sealing connection with the outer wall of a valve sleeve (2), the lower end of the working cylinder (15) abuts against the valve sleeve (2) and the outer wall of the working cylinder (15) is in sealing connection with the inner wall of the valve sleeve (2), the intermediate cylinder (16) is coaxially sleeved on the working cylinder (15) and the lower end face of the intermediate cylinder (16) is in sealing connection with the upper end face of the valve sleeve (2), and the upper end of the diversion hole (24) is positioned between the intermediate cylinder (16) and the oil storage cylinder (.
7. The shock absorber group for resisting vehicle roll according to claim 6, characterized in that the valve housing (2) is circumferentially arrayed with a plurality of alternating holes (27), the alternating holes (27) are communicated with the upper end of the valve housing (2) and are positioned between the working cylinder (15) and the intermediate cylinder (16), and the lower end is communicated with the outside of the side wall of the valve housing (2).
8. The shock absorber group for resisting vehicle roll according to claim 7, wherein the lower end of the interaction hole (27) of the valve housing (2) and the outer end of the spool chamber (21) of the valve device of one of the shock absorbers are respectively communicated with the outer end of the spool chamber (21) of the valve device of the other shock absorber and the lower end of the interaction hole (27) of the valve housing (2).
CN202011165388.2A 2020-10-27 2020-10-27 Valve device with adjustable compression damping Pending CN112240369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011165388.2A CN112240369A (en) 2020-10-27 2020-10-27 Valve device with adjustable compression damping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011165388.2A CN112240369A (en) 2020-10-27 2020-10-27 Valve device with adjustable compression damping

Publications (1)

Publication Number Publication Date
CN112240369A true CN112240369A (en) 2021-01-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011165388.2A Pending CN112240369A (en) 2020-10-27 2020-10-27 Valve device with adjustable compression damping

Country Status (1)

Country Link
CN (1) CN112240369A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855829A (en) * 2021-01-21 2021-05-28 上海淅减汽车悬架有限公司 Restoration hydraulic buffer structure of shock absorber and shock absorber
CN116851987A (en) * 2023-07-31 2023-10-10 江苏禾立拓智能科技有限公司 Welding robot without dead angle in welding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112855829A (en) * 2021-01-21 2021-05-28 上海淅减汽车悬架有限公司 Restoration hydraulic buffer structure of shock absorber and shock absorber
CN112855829B (en) * 2021-01-21 2022-11-25 南阳淅减汽车减振器有限公司 Restoration hydraulic buffer structure of shock absorber and shock absorber
CN116851987A (en) * 2023-07-31 2023-10-10 江苏禾立拓智能科技有限公司 Welding robot without dead angle in welding
CN116851987B (en) * 2023-07-31 2024-02-02 江苏禾立拓智能科技有限公司 Welding robot without dead angle in welding

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Effective date of registration: 20220905

Address after: 474450 xipingtou Industrial Park, Xichuan County, Nanyang City, Henan Province

Applicant after: NANYANG CIJAN AUTO SHOCK ABSORBER Co.,Ltd.

Applicant after: Shanghai Xijian automobile suspension Co.,Ltd.

Applicant after: NANYANG WEIAO SITU VEHICLE SHOCK ABSORBER Co.,Ltd.

Address before: Room 2201, 888 Moyu South Road, Anting Town, Jiading District, Shanghai

Applicant before: Shanghai Xijian automobile suspension Co.,Ltd.