CN107228150A - A kind of damper with two-way pressure limiting piston - Google Patents
A kind of damper with two-way pressure limiting piston Download PDFInfo
- Publication number
- CN107228150A CN107228150A CN201710670592.1A CN201710670592A CN107228150A CN 107228150 A CN107228150 A CN 107228150A CN 201710670592 A CN201710670592 A CN 201710670592A CN 107228150 A CN107228150 A CN 107228150A
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- China
- Prior art keywords
- piston
- pressure limiting
- valve element
- way pressure
- left end
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of damper, in particular it is a kind of damper with two-way pressure limiting piston, including damping oil cylinder, two-way pressure limiting piston, damping spring, base suspension ring, oil sealing, piston rod and connecting rod suspension ring, the two-way pressure limiting piston is plugged on damping oil cylinder interior, damping spring is fixedly connected between damping oil cylinder and two-way pressure limiting piston, damping oil cylinder right-hand member is welded to connect base suspension ring, damping oil cylinder left end sets shoulder hole, oil sealing is connected in shoulder hole, shoulder hole left end is provided with jump ring, the right-hand member of piston rod connects two-way pressure limiting piston, the left end of piston rod is welded to connect connecting rod suspension ring；A kind of damper with two-way pressure limiting piston, its advantage is：The flow speed of fluid can be automatically adjusted according to the size of impulsive force, and then adjusts the size of damping action, and adjustable range that can be as needed to fluid flow speed is adjusted.
Description
Technical field
In particular it is a kind of damper with two-way pressure limiting piston the present invention relates to a kind of damper.
Background technology
Concussion when damper is for suppressing to rebound after spring shock-absorbing and the device from road shocks, are widely used in
In automotive suspension, for accelerating the decay of vehicle frame and body vibrations, to improve ride of vehicle.The work of damper is former
Reason is that, when being shaken between vehicle frame and vehicle bridge and relative motion occur, the piston in damper is moved up and down, the oil in snubber cavity
Liquid flows into another intracavitary from a chamber by different holes repeatedly.Friction and fluid now between hole wall and fluid is intermolecular
Interior friction to vibrations form damping force, thump energy is converted into fluid heat energy, then be dispersed into greatly by absorber
In gas.When the factors such as oil passage area of section are constant, damping force increases and decreases with the speed of related movement between vehicle frame and vehicle bridge,
And it is relevant with oil viscosity.Damper carries the slowing down impact and damping of the task with flexible member, and damping force is excessive, will make to hang
Frame elasticity degenerates, or even damages damper connector；Damping force is too small, will be unable to accelerate the vibration decay of flexible member, because
And the damping force that adjust damper becomes the problem of a contradiction.
Such as number of patent application is for a kind of CN200910302656.8 shock absorber piston component and containing the piston component
Automatic damping adjusting damper, shock absorber piston component include main piston, floating piston, subtask cylinder, the endoporus of main piston with
The cylindrical of subtask cylinder is fixedly connected, and one end of subtask cylinder, which is fixedly connected with piston rod, subtask cylinder, is separately installed with card
Ring, floating piston, floating piston back-moving spring, and it is axially disposed on the interior casing wall of subtask cylinder have throttling groove, the section
It is trapezoidal or multistage ladder-type structure to flow the vertical sectional shape of groove.The automatic damping adjusting damper of the component containing shock absorber piston
Including oil storage cylinder, working cylinder, piston component, absorber spring, described piston component is above-mentioned shock absorber piston component.Should
Invention can automatic damping adjusting size, it is ensured that vehicle traveling regularity and stability, but the invention damping force be only capable of by
Throttling groove specification changes automatically within the specific limits, when temperature change causes fluid viscosity to change, damper damping nothing
Method does further adjustment.
The content of the invention
It is an object of the invention to provide a kind of damper with two-way pressure limiting piston, can according to the size of impulsive force from
The flow speed of dynamic regulation fluid, and then the size of damping action is adjusted, and can be as needed to fluid flow speed
Adjustable range is adjusted.
The purpose of the present invention is achieved through the following technical solutions：
A kind of damper with two-way pressure limiting piston, including damping oil cylinder, two-way pressure limiting piston, damping spring, base
Suspension ring, oil sealing, piston rod, connecting rod suspension ring and jump ring, the two-way pressure limiting piston are plugged on damping oil cylinder interior, damping oil cylinder
Damping spring is fixedly connected between two-way pressure limiting piston, damping oil cylinder right-hand member is welded to connect base suspension ring, and damping oil cylinder is left
End sets shoulder hole, and oil sealing is connected in shoulder hole, and shoulder hole left end is provided with jump ring, and the right-hand member of piston rod connects two-way limit
Piston is pressed, the left end of piston rod is welded to connect connecting rod suspension ring.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention is described double
Include outer piston cylinder, valve core case, valve element I, valve element II, piston end cap, pressure limiting spring I and pressure limiting spring II, institute to pressure limiting piston
Cylindrical structure of the outer piston cylinder for left end opening and internal hollow out is stated, the right-hand member of outer piston cylinder is provided with multiple oil leak holes I, outside
The inwall of piston cylinder is provided with screw thread, and the valve core case is that spool bore I is provided with cylindrical structure, valve core case, valve core case with
Spool bore I is coaxial, and spool bore I is the cone structure that left end aperture is more than right-hand member aperture, and valve core case lateral wall is provided with screw thread, valve
Core print seat is threadedly attached in outer piston cylinder, and the valve element I is the frustum cone structure that left end diameter is more than right-hand member diameter, valve element I
It is plugged in spool bore I, spool bore II is set on valve element I, spool bore II is the cone structure that left end diameter is less than right-hand member diameter,
Grafting valve element II in spool bore II, the valve element II is the frustum cone structure that left end diameter is less than right-hand member diameter, the piston end cap
It is threadedly attached on the left end of outer piston cylinder, piston end cap and is provided with multiple oil leak holes II, the welding of piston end cap left end connects
Piston rod is connect, pressure limiting spring I is set between the valve element I and piston end cap, is set between the valve element II and outer piston cylinder
Pressure limiting spring II.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention is described outer
The screw thread of screw thread, the screw thread that valve core case lateral wall is set and piston end cap lateral wall that the piston inside wall of cylinder is set is sealing spiral shell
Line.
It is used as the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention, the valve
The left end diameter of core I is more than the minimum-value aperture of spool bore I, and the taper of valve element I is identical with the taper of spool bore I, and valve element I is plugged on valve
Gap is formed in core bore I to coordinate.
It is used as the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention, the valve
The left end diameter of core II is more than the minimum-value aperture of spool bore II, and the taper of valve element II is identical with the taper of spool bore II, valve element II
It is plugged in spool bore II and forms gap cooperation.
It is used as the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention, the work
The part that plug connecting rod is located at outside damping oil cylinder is provided with dust cover, and dust cover one end and damping oil cylinder are dust-proof by bonding connection
The other end of cover is interference fitted in the left end of piston rod.
It is used as the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention, the oil
The internal diameter of envelope is identical with piston rod diameter, and piston rod is with being plugged in oil sealing, and piston rod is interference fitted with oil sealing formation.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention is described double
Also include current limliting fore-set I and current limliting fore-set II to pressure limiting piston, the current limliting fore-set I is circular sleeve, the side wall of current limliting fore-set I
Multiple manholes are provided with, current limliting fore-set I is welded to connect the left end in valve element I, and pressure limiting spring I is socketed in current limliting fore-set I
Outside, the current limliting fore-set II is welded to connect the right-hand member in valve element II, and pressure limiting spring II is socketed in the outside of current limliting fore-set II.
It is used as the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention, the limit
The distance between the left side of fore-set I and the right side of piston end cap are flowed between 5mm to 30mm, the right side of the current limliting fore-set II
The distance between end face and outer piston cylinder interior right-hand member wall are between 5mm to 30mm.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the present invention is described to subtract
Shake the madial wall of oil cylinder, the lateral wall of outer piston cylinder, the side wall of spool bore I, the lateral wall of valve element I, spool bore II side wall with
And the side wall of valve element II is processed by shot blasting.
A kind of of the invention damper with two-way pressure limiting piston has the beneficial effect that：
A kind of damper with two-way pressure limiting piston of the present invention, is provided with two-way pressure limiting piston, can be to damping oil cylinder 1
Inner fluid flowing produces damping, so that vibration gradually decays；Valve element I and valve element II are provided with, can be with impulsive force size certainly
Dynamic regulation fluid flowing velocity, and then damping force is adjusted, be conducive to weakening damping when by greater impact, raising subtracts
Shake the cushioning effect of spring；The active strokes of valve element I and valve element II can be adjusted, can be as needed to fluid flow speed
Adjustable range is adjusted, so as to improve the applicability of damper.
Brief description of the drawings
The present invention will be further described in detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is the overall structure diagram one of the present invention；
Fig. 2 is the overall structure diagram two of the present invention；
Fig. 3 is the two-way pressure limiting piston structure schematic diagram one of the present invention；
Fig. 4 is the two-way pressure limiting piston structure schematic diagram two of the present invention；
Fig. 5 is the two-way pressure limiting piston structure schematic diagram three of the present invention；
Fig. 6 is the outer piston cylinder structure schematic diagram of the present invention；
Fig. 7 is the valve core case structural representation of the present invention；
Fig. 8 is the structural representation of valve element I of the present invention；
Fig. 9 is the structural representation of valve element II of the present invention.
In figure：Damping oil cylinder 1；Two-way pressure limiting piston 2；Outer piston cylinder 2-1；The 2-1-1 of oil leak hole I；Valve core case 2-2；Valve element
The 2-2-1 of hole I；The 2-3 of valve element I；The 2-3-1 of spool bore II；The 2-4 of valve element II；Piston end cap 2-5；The 2-5-1 of oil leak hole II；Pressure limiting spring I
2-6；The 2-7 of pressure limiting spring II；The 2-8 of current limliting fore-set I；The 2-9 of current limliting fore-set II；Damping spring 3；Base suspension ring 4；Oil sealing 5；Piston connects
Bar 6；Connecting rod suspension ring 7.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment one：
Illustrate present embodiment, a kind of damper with two-way pressure limiting piston, including damping oil cylinder with reference to Fig. 1-9
1st, two-way pressure limiting piston 2, damping spring 3, base suspension ring 4, oil sealing 5, piston rod 6, connecting rod suspension ring 7 and jump ring 8, described two-way
Pressure limiting piston 2 is plugged on inside damping oil cylinder 1, and damping spring 3 is fixedly connected between damping oil cylinder 1 and two-way pressure limiting piston 2,
The right-hand member of damping oil cylinder 1 is welded to connect base suspension ring 4, and the left end of damping oil cylinder 1 sets shoulder hole, and oil sealing 5 is connected in shoulder hole, rank
Terraced hole left end is provided with jump ring 8, and the inside of damping oil cylinder 1 is filled with fluid, and oil sealing 5 is used to seal fluid, prevents fluid
Leakage, jump ring 8 is used to carry out oil sealing 5 axially position, and the right-hand member of piston rod 6 connects two-way pressure limiting piston 2, piston rod 6
Left end be welded to connect connecting rod suspension ring 7, when between base suspension ring 4 and connecting rod suspension ring 7 produce vibratory impulse when, the band of piston rod 6
Move two-way pressure limiting piston 2 to move left and right in damping oil cylinder 1, fluid comes and goes flowing in two-way pressure limiting by two-way pressure limiting piston 2
The left and right ends of piston 2, fluid is acted on when flowing by frictional force, plays a part of making vibration decay with this.
Embodiment two：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment one, it is described double
Include outer piston cylinder 2-1, valve core case 2-2, the 2-3 of valve element I, the 2-4 of valve element II, piston end cap 2-5, pressure limiting spring I to pressure limiting piston 2
2-6 and the cylindrical structure that pressure limiting spring II 2-7, the outer piston cylinder 2-1 are left end opening and internal hollow out, outer piston cylinder 2-
1 left end is provided with multiple 2-1-1 of oil leak hole I, and outer piston cylinder 2-1 inwall is provided with screw thread, and the valve core case 2-2 is cylinder
Spool bore I 2-2-1, valve core case 2-2 are provided with body structure, valve core case 2-2 and the 2-2-1 of spool bore I is coaxial, the 2-2-1 of spool bore I
It is more than the cone structure in right-hand member aperture for left end aperture, valve core case 2-2 lateral walls are provided with screw thread, and valve core case 2-2 passes through screw thread
It is connected in outer piston cylinder 2-1, the 2-3 of valve element I is the frustum cone structure that left end diameter is more than right-hand member diameter, the 2-3 grafting of valve element I
In the 2-2-1 of spool bore I, it is that left end diameter is less than right-hand member that the 2-3-1 of spool bore II, the 2-3-1 of spool bore II are set on the 2-3 of valve element I
The 2-4 of grafting valve element II in the cone structure of diameter, the 2-3-1 of spool bore II, the 2-4 of valve element II are that left end diameter is straight less than right-hand member
The frustum cone structure in footpath, the piston end cap 2-5 is threadedly attached on outer piston cylinder 2-1 left end, piston end cap 2-5 and set
Have in multiple 2-5-1 of oil leak hole II, piston end cap 2-5 left ends are welded to connect piston rod 6, the 2-3 of valve element I and piston end cap
Set between 2-5 and the 2-7 of pressure limiting spring II is set between pressure limiting spring I 2-6, the 2-4 of valve element II and outer piston the cylinder 2-1；When double
When being moved right to the stress of pressure limiting piston 2, two-way pressure limiting piston 2 extrudes right in right-hand member fluid in damping oil cylinder 1, damping oil cylinder 1
Hold oil liquid pressure to be more than left end oil liquid pressure in damping oil cylinder 1, the 2-3 of pressure official post valve element I is moved to the left, now the 2-3 of valve element I with
Gap is produced between the 2-2-1 of spool bore I, under the 2-7 of pressure limiting spring II effects, the 2-4 of valve element II is closely pasted with the 2-3-1 of spool bore II
Close, the fluid of the inside right-hand member of damping oil cylinder 1 sequentially passes through the 2-2-1 of spool bore I, the 2-2-1 of spool bore I and the 2-5-1 of oil leak hole II streams
Enter the inside left end of damping oil cylinder 1；When the two-way stress of pressure limiting piston 2 is moved to the left, the two-way extruding damping of pressure limiting piston 2 oil cylinder 1
Left end oil liquid pressure is more than right-hand member oil liquid pressure, pressure official post valve element II in damping oil cylinder 1 in interior left end fluid, damping oil cylinder 1
2-4 moves right, and now produces gap between the 2-4 of valve element II and the 2-3-1 of spool bore II, under the 2-6 of pressure limiting spring I effects, valve
The 2-3 of core I fits closely with the 2-2-1 of spool bore I, and the fluid of the inside left end of damping oil cylinder 1 sequentially passes through the 2-5-1 of oil leak hole II, valve
The 2-3-1 of the core bore II and 2-1-1 of oil leak hole I flows into the inside right-hand member of damping oil cylinder 1；Fluid or so flows, and is acted on by frictional resistance,
Thus vibration is made gradually to decay.
Embodiment three：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, it is described outer
The screw thread of screw thread, the screw thread that valve core case 2-2 lateral walls are set and piston end cap 2-5 lateral walls that piston cylinder 2-1 inwalls are set
It is sealing screw thread, position that can be by rotary valve core print seat 2-2 regulating valve core print seat 2-2 in outer piston cylinder 2-1 is adjusted with this
The distance between the 2-9 of current limliting fore-set II right side and outer piston cylinder 2-1 inside right-hand member wall；Adjusted by rotary-piston end cap 2-5
Save the distance between the 2-8 of current limliting fore-set I left side and piston end cap 2-5 right side；Sealing screw thread is used to prevent fluid from existing
Threaded connection place produces leakage.
Embodiment four：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, the valve
The 2-3 left ends diameter of core I is more than the 2-2-1 of spool bore I minimum-value aperture, the taper phase of the 2-3 of valve element I taper and the 2-2-1 of spool bore I
Together, the 2-3 of valve element I, which is plugged in the 2-2-1 of spool bore I, forms gap cooperation；Under the 2-6 of pressure limiting spring I effects, the 2-3 of valve element I laminatings
In the 2-2-1 of spool bore I, the 2-2-1 of spool bore I can be fully sealed.
Embodiment five：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, the valve
The 2-4 of core II left end diameter is more than the 2-3-1 of spool bore II minimum-value aperture, and the 2-4 of valve element II taper is with the 2-3-1's of spool bore II
Taper is identical, and the 2-4 of valve element II, which is plugged in the 2-3-1 of spool bore II, forms gap cooperation；Under the 2-7 of pressure limiting spring II effects, valve
The 2-4 of core II is fitted in the 2-3-1 of spool bore II, and the 2-3-1 of spool bore II can be fully sealed.
Embodiment six：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment one, the work
The part that plug connecting rod 6 is located at outside damping oil cylinder 1 is provided with dust cover, and dust cover one end, by bonding connection, is prevented with damping oil cylinder 1
The other end of dust hood is interference fitted in the left end of piston rod 6, and dust cover is telescopic quality of rubber materials, for ensureing that piston connects
The cleanliness factor of bar 6, prevents dust from entering damping oil cylinder 1 or the abrasion influence sealing of oil sealing 5 with piston rod 6.
Embodiment seven：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment one, the oil
The internal diameter of envelope 5 is identical with the diameter of piston rod 6, and piston rod 6 is with being plugged in oil sealing 5, and piston rod 6 was formed with oil sealing 5
It is full of cooperation, oil sealing 5 is interference fitted in the shoulder hole of the left end of damping oil cylinder 1, oil sealing 5 is used to prevent the inner fluid of damping oil cylinder 1 from letting out
Leakage, the oil sealing 5 is outside framework oil seal, possesses anti-deformation performance, and with good sealing.
Embodiment eight：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, it is described double
It is circular sleeve, current limliting also to include the 2-8 of current limliting fore-set I and current limliting fore-set II 2-9, the 2-8 of current limliting fore-set I to pressure limiting piston 2
The 2-8 of fore-set I side wall is provided with multiple manholes, and the 2-8 of current limliting fore-set I is welded to connect the left end in the 2-3 of valve element I, pressure limiting bullet
The 2-6 of spring I is socketed in the 2-8 of current limliting fore-set I outside, and the 2-9 of current limliting fore-set II is welded to connect the right-hand member in the 2-4 of valve element II, limit
The 2-7 of pressing spring II is socketed in the 2-9 of current limliting fore-set II outside；The 2-8 of current limliting fore-set I is used for the active strokes for limiting the 2-4 of valve element II,
The 2-9 of current limliting fore-set II is used for the active strokes for limiting the 2-4 of valve element II.
Embodiment nine：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment eight, the limit
The distance between the 2-8 of fore-set I left side and piston end cap 2-5 right side are flowed between 5mm to 30mm, the current limliting fore-set
The distance between II 2-9 right side and outer piston cylinder 2-1 inside right-hand member wall are between 5mm to 30mm；The 2-8's of current limliting fore-set I
The distance between left side and piston end cap 2-5 right side are adjusted by rotary-piston end cap 2-5, the 2- of current limliting fore-set II
The distance between right-hand member wall is adjusted by rotary valve core print seat 2-2 inside 9 right side and outer piston cylinder 2-1；When current limliting top
When the 2-8 of post I left side is contacted with piston end cap 2-5 right side, the 2-3 of valve element I reaches the left end limit of active strokes, current limliting
The distance between the 2-8 of fore-set I left side and piston end cap 2-5 right side are used to limit the 2-3 of valve element I and the 2-2-1 of spool bore I
Between gap size, the area of section in gap is less than multiple 2-1-1 of oil leak hole I between the 2-3 of valve element I and the 2-2-1 of spool bore I
Area sum, the area of section in gap is also less than multiple 2-5-1 of oil leak hole II face between the 2-3 of valve element I and the 2-2-1 of spool bore I
Product sum, when the two-way pressure limiting piston 2 is moved right, fluid flow speed is controlled by the 2-3 of valve element I, when piston rod 6 by
The impulsive force increase arrived, the pressure differential increase at the two-way two ends of pressure limiting piston 2, the distance increase that the 2-3 of valve element I is moved to the left, so that
Increase the area of section in gap between the 2-3 of valve element I and the 2-2-1 of spool bore I, oil flow increase, deattenuation is conducive to
Damped by being weakened during greater impact, and then increase the elastic reaction of damping spring 3；Similarly, when the 2-9 of current limliting fore-set II right-hand member
When face is contacted with right-hand member wall inside outer piston cylinder 2-1, the 2-4 of valve element II reaches the extreme right of active strokes, the 2-9 of current limliting fore-set II
Right side and outer piston cylinder 2-1 inside the distance between right-hand member wall be used to limit between the 2-4 of valve element II and the 2-3-1 of spool bore II
The size in gap, the area of section in gap is less than multiple 2-1-1 of oil leak hole I face between the 2-4 of valve element II and the 2-3-1 of spool bore II
Product sum, the area of section in gap is also less than multiple 2-5-1 of oil leak hole II face between the 2-4 of valve element II and the 2-3-1 of spool bore II
Product sum, thus when two-way pressure limiting piston 2 is moved to the left, fluid flow speed by the 2-4 of valve element II control, the 2-4 of valve element II with
Between the 2-3-1 of spool bore II gap with impact dynamics size variation.
Embodiment ten：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, described to subtract
Shake madial wall, outer piston cylinder 2-1 lateral wall, the 2-2-1 of spool bore I side wall, the 2-3 of valve element I lateral wall, the valve element of oil cylinder 1
The 2-3-1 of hole II side wall and the 2-4 of valve element II side wall are processed by shot blasting that cooperation is close between in turn ensuring that each device,
Ensure sealing.
Certainly, described above not limitation of the present invention, the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made in the essential scope of the present invention, fall within the guarantor of the present invention
Protect scope.
Claims (10)
1. a kind of damper with two-way pressure limiting piston, including damping oil cylinder (1), two-way pressure limiting piston (2), damping spring
(3), base suspension ring (4), oil sealing (5), piston rod (6), connecting rod suspension ring (7) and jump ring (8), it is characterised in that：It is described two-way
Pressure limiting piston (2) is plugged on damping oil cylinder (1) inside, is fixedly connected with and subtracts between damping oil cylinder (1) and two-way pressure limiting piston (2)
Spring (3) is shaken, damping oil cylinder (1) right-hand member is welded to connect base suspension ring (4), and damping oil cylinder (1) left end sets shoulder hole, oil sealing
(5) it is connected in shoulder hole, shoulder hole left end is provided with jump ring (8), the right-hand member of piston rod (6) connects two-way pressure limiting piston
(2), the left end of piston rod (6) is welded to connect connecting rod suspension ring (7).
2. a kind of damper with two-way pressure limiting piston according to claim 1, it is characterised in that：The two-way pressure limiting
Piston (2) includes outer piston cylinder (2-1), valve core case (2-2), valve element I (2-3), valve element II (2-4), piston end cap (2-5), limit
Pressing spring I (2-6) and pressure limiting spring II (2-7), the outer piston cylinder (2-1) are the cylinder knot of left end opening and internal hollow out
Structure, the right-hand member of outer piston cylinder (2-1) is provided with multiple oil leak holes I (2-1-1), and the inwall of outer piston cylinder (2-1) is provided with screw thread,
The valve core case (2-2) is to be provided with spool bore I (2-2-1), valve core case (2-2) and valve on cylindrical structure, valve core case (2-2)
Coaxially, spool bore I (2-2-1) is the cone structure that left end aperture is more than right-hand member aperture to core bore I (2-2-1), and valve core case (2-2) is outside
Side wall is provided with screw thread, and valve core case (2-2) is threadedly attached in outer piston cylinder (2-1), and the valve element I (2-3) is left end
Diameter is more than the frustum cone structure of right-hand member diameter, and valve element I (2-3) is plugged in spool bore I (2-2-1), is set on valve element I (2-3)
Spool bore II (2-3-1), spool bore II (2-3-1) is the cone structure that left end diameter is less than right-hand member the diameter, (2-3- of spool bore II
1) grafting valve element II (2-4) in, the valve element II (2-4) is the frustum cone structure that left end diameter is less than right-hand member diameter, the piston
End cap (2-5) is threadedly attached on outer piston cylinder (2-1) left end, piston end cap (2-5) and is provided with multiple oil leak holes II
(2-5-1), piston end cap (2-5) left end is welded to connect piston rod (6), the valve element I (2-3) and piston end cap (2-5) it
Between set pressure limiting spring I (2-6), between the valve element II (2-4) and outer piston cylinder (2-1) setting pressure limiting spring II (2-7).
3. a kind of damper with two-way pressure limiting piston according to claim 2, it is characterised in that：The outer piston cylinder
The screw thread of screw thread, the screw thread that valve core case (2-2) lateral wall is set and piston end cap (2-5) lateral wall that (2-1) inwall is set
It is sealing screw thread.
4. a kind of damper with two-way pressure limiting piston according to claim 2, it is characterised in that：(the 2- of valve element I
3) left end diameter is more than the minimum-value aperture of spool bore I (2-2-1), the taper of valve element I (2-3) and the taper of spool bore I (2-2-1)
Identical, valve element I (2-3), which is plugged in spool bore I (2-2-1), forms gap cooperation.
5. a kind of damper with two-way pressure limiting piston according to claim 2, it is characterised in that：The valve element II
The left end diameter of (2-4) is more than the minimum-value aperture of spool bore II (2-3-1), taper and the (2-3- of spool bore II of valve element II (2-4)
1) taper is identical, and valve element II (2-4), which is plugged in spool bore II (2-3-1), forms gap cooperation.
6. a kind of damper with two-way pressure limiting piston according to claim 1, it is characterised in that：The piston rod
(6) part of damping oil cylinder (1) outside is provided with dust cover, dust cover one end by bonding connection, is prevented with damping oil cylinder (1)
The other end of dust hood is interference fitted in the left end of piston rod (6).
7. a kind of damper with two-way pressure limiting piston according to claim 1, it is characterised in that：The oil sealing (5)
Internal diameter it is identical with the diameter of piston rod (6), piston rod (6) and be plugged in oil sealing (5), piston rod (6) and oil sealing
(5) interference fit is formed.
8. a kind of damper with two-way pressure limiting piston according to claim 2, it is characterised in that：The two-way pressure limiting
Piston (2) also includes current limliting fore-set I (2-8) and current limliting fore-set II (2-9), and the current limliting fore-set I (2-8) is circular sleeve, limit
The side wall of stream fore-set I (2-8) is provided with multiple manholes, and current limliting fore-set I (2-8) is welded to connect on valve element I (2-3) left side
End, pressure limiting spring I (2-6) is socketed in current limliting fore-set I (2-8) outside, and the current limliting fore-set II (2-9) is welded to connect in valve element
II (2-4) right-hand member, pressure limiting spring II (2-7) is socketed in current limliting fore-set II (2-9) outside.
9. a kind of damper with two-way pressure limiting piston according to claim 8, it is characterised in that：The current limliting fore-set
The distance between I (2-8) left side and the right side of piston end cap (2-5) are between 5mm to 30mm, the current limliting fore-set II
The distance between the right side of (2-9) and the internal right-hand member wall of outer piston cylinder (2-1) are between 5mm to 30mm.
10. a kind of damper with two-way pressure limiting piston according to claim 2, it is characterised in that：The damping oil
The madial wall of cylinder (1), the lateral wall of outer piston cylinder (2-1), the side wall of spool bore I (2-2-1), the lateral wall of valve element I (2-3),
The side wall of spool bore II (2-3-1) and the side wall of valve element II (2-4) are processed by shot blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670592.1A CN107228150A (en) | 2017-08-08 | 2017-08-08 | A kind of damper with two-way pressure limiting piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710670592.1A CN107228150A (en) | 2017-08-08 | 2017-08-08 | A kind of damper with two-way pressure limiting piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107228150A true CN107228150A (en) | 2017-10-03 |
Family
ID=59958221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710670592.1A Withdrawn CN107228150A (en) | 2017-08-08 | 2017-08-08 | A kind of damper with two-way pressure limiting piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107228150A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177616A (en) * | 2017-12-26 | 2018-06-19 | 重庆欧文机械制造有限公司 | For the damping semi-surrounding bumper of mini-tiller |
| CN108591349A (en) * | 2018-04-28 | 2018-09-28 | 张美玲 | A kind of damper |
| CN111456981A (en) * | 2020-05-22 | 2020-07-28 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| CN112128302A (en) * | 2020-08-10 | 2020-12-25 | 盐城工学院 | Bidirectional action cylinder type shock absorber with small damage |
| CN113002261A (en) * | 2020-12-10 | 2021-06-22 | 江苏德发房车科技有限公司 | X-shaped suspension for motor home |
| CN113153953A (en) * | 2021-04-22 | 2021-07-23 | 安徽工程大学 | Novel shock absorber |
-
2017
- 2017-08-08 CN CN201710670592.1A patent/CN107228150A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177616A (en) * | 2017-12-26 | 2018-06-19 | 重庆欧文机械制造有限公司 | For the damping semi-surrounding bumper of mini-tiller |
| CN108591349A (en) * | 2018-04-28 | 2018-09-28 | 张美玲 | A kind of damper |
| CN111456981A (en) * | 2020-05-22 | 2020-07-28 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| CN111456981B (en) * | 2020-05-22 | 2024-05-17 | 湖南特达液压有限公司 | Built-in bidirectional pressure relief oil cylinder |
| CN112128302A (en) * | 2020-08-10 | 2020-12-25 | 盐城工学院 | Bidirectional action cylinder type shock absorber with small damage |
| CN112128302B (en) * | 2020-08-10 | 2022-04-08 | 盐城工学院 | Bidirectional action cylinder type shock absorber with small damage |
| CN113002261A (en) * | 2020-12-10 | 2021-06-22 | 江苏德发房车科技有限公司 | X-shaped suspension for motor home |
| CN113153953A (en) * | 2021-04-22 | 2021-07-23 | 安徽工程大学 | Novel shock absorber |
| CN113153953B (en) * | 2021-04-22 | 2022-09-02 | 安徽工程大学 | Novel shock absorber |
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Application publication date: 20171003 |