CN207049243U - A kind of damper with two-way pressure limiting piston - Google Patents
A kind of damper with two-way pressure limiting piston Download PDFInfo
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- CN207049243U CN207049243U CN201720983179.6U CN201720983179U CN207049243U CN 207049243 U CN207049243 U CN 207049243U CN 201720983179 U CN201720983179 U CN 201720983179U CN 207049243 U CN207049243 U CN 207049243U
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- piston
- pressure limiting
- valve element
- way pressure
- left end
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Abstract
It the utility model is related 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 are：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 the adjustable range of fluid flow speed can be adjusted as needed.
Description
Technical field
A kind of damper is the utility model is related to, is in particular a kind of damper with two-way pressure limiting piston.
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 when being shaken between vehicle frame and vehicle bridge and relative motion occur, and the piston in damper moves up and down, the oil in snubber cavity
Liquid flows into another intracavitary from a chamber by different holes repeatedly.Now the friction between hole wall and fluid and fluid are 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,
It is and 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 regulation 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 is fixedly connected with piston rod, and card is separately installed with subtask cylinder
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
The vertical sectional shape for flowing groove is trapezoidal or multistage ladder-type structure.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
The size of utility model energy automatic damping adjusting, it is ensured that the regularity and stability of vehicle traveling, but the utility model damps
Power is only capable of within the specific limits automatically changing by throttling groove specification, when temperature change causes fluid viscosity to change, damping
Device damping can not do further adjustment.
Utility model content
The purpose of this utility model is to provide a kind of damper with two-way pressure limiting piston, can be according to the big of impulsive force
The small flow speed for automatically adjusting fluid, and then the size of damping action is adjusted, and can be as needed to fluid flow speed
The adjustable range of degree is adjusted.
The purpose of this utility model 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 utility model, institute
Stating two-way pressure limiting piston includes outer piston cylinder, valve core case, valve element I, valve element II, piston end cap, pressure limiting spring I and pressure limiting spring
II, the outer piston cylinder is the cylindrical structure of left end opening and internal hollow out, and the right-hand member of outer piston cylinder is provided with multiple drainings
Hole I, the inwall of outer piston cylinder are provided with screw thread, and the valve core case is cylindrical structure, and spool bore I, valve are provided with valve core case
Core print seat and spool bore I are 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 case are threadedly attached in outer piston cylinder, and the valve element I is the round platform knot that left end diameter is more than right-hand member diameter
Structure, valve element I are plugged in spool bore I, and spool bore II is set on valve element I, and spool bore II is that left end diameter is less than right-hand member diameter
Cone structure, 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, described
Piston end cap is threadedly attached in the left end of outer piston cylinder, and multiple oil leak holes II are provided with piston end cap, and piston end cap is left
End is welded to connect piston rod, and pressure limiting spring I, the valve element II and outer piston cylinder are set between the valve element I and piston end cap
Between pressure limiting spring II is set.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
It is close to state the screw thread, the screw thread of valve core case lateral wall setting and the screw thread of piston end cap lateral wall of the setting of the outer piston inside wall of cylinder
Seal screw thread.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
The minimum-value aperture that the left end diameter of valve element I is more than spool bore I is stated, the taper of valve element I is identical with the taper of spool bore I, the grafting of valve element I
Gap is formed in spool bore I to coordinate.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
The left end diameter for stating valve element 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
Core II, which is plugged in spool bore II, forms gap cooperation.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
State the part that piston rod is located at outside damping oil cylinder and be provided with dust cover, dust cover one end and damping oil cylinder by bonding connection,
The other end of dust cover is interference fitted in the left end of piston rod.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
It is identical with piston rod diameter to state the internal diameter of oil sealing, for piston rod with being plugged in oil sealing, piston rod forms interference with oil sealing
Coordinate.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
Stating two-way pressure limiting piston also includes current limliting fore-set I and current limliting fore-set II, and the current limliting fore-set I is circular sleeve, current limliting fore-set I
Side wall is provided with multiple manholes, and 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 are welded to connect the right-hand member in valve element II, and pressure limiting spring II is socketed in the outer of current limliting fore-set II
Side.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
The distance between the left side of current limliting fore-set I and the right side of piston end cap are stated between 5mm to 30mm, the current limliting fore-set II
Right side and the distance between outer piston cylinder interior right-hand member wall between 5mm to 30mm.
As the further optimization of the technical program, a kind of damper with two-way pressure limiting piston of the utility model, institute
State the madial wall of damping oil cylinder, the lateral wall of outer piston cylinder, the side wall of spool bore I, the lateral wall of valve element I, the side of spool bore II
The side wall of wall and valve element II is processed by shot blasting.
A kind of damper with two-way pressure limiting piston of the utility model has the beneficial effect that：
A kind of damper with two-way pressure limiting piston of the utility model, is provided with two-way pressure limiting piston, can be to damping
The flowing of the inner fluid of oil cylinder 1 produces damping, so that vibration gradually decay；Valve element I and valve element II are provided with, can be big with impulsive force
It is small to automatically adjust fluid flowing velocity, and then damping force is adjusted, be advantageous to weaken damping when by greater impact, carry
The cushioning effect of high damping spring；The active strokes of valve element I and valve element II can be adjusted, can be as needed to fluid flow speed
The adjustable range of degree is adjusted, so as to improve the applicability of damper.
Brief description of the drawings
The utility model is described in more detail with specific implementation method below in conjunction with the accompanying drawings.
Fig. 1 is overall structure diagram one of the present utility model；
Fig. 2 is overall structure diagram two of the present utility model；
Fig. 3 is two-way pressure limiting piston structure schematic diagram one of the present utility model；
Fig. 4 is two-way pressure limiting piston structure schematic diagram two of the present utility model；
Fig. 5 is two-way pressure limiting piston structure schematic diagram three of the present utility model；
Fig. 6 is outer piston cylinder structure schematic diagram of the present utility model；
Fig. 7 is valve core case structural representation of the present utility model；
Fig. 8 is the structural representation of valve element I of the present utility model；
Fig. 9 is the structural representation of valve element II of the present utility model.
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 utility model 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, it is 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 are 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 are acted on when flowing by frictional force, play 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, 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 pressure limiting spring II 2-7, the outer piston cylinder 2-1 are the cylindrical structure of 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
Body structure, spool bore I 2-2-1, valve core case 2-2 are provided with 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 more than the frustum cone structure of right-hand member diameter, the 2-3 grafting of valve element I for left end diameter
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 cone structure of diameter, it is straight that the 2-4 of grafting valve element II in the 2-3-1 of spool bore II, the 2-4 of valve element II are that left end diameter is less than right-hand member
The frustum cone structure in footpath, the piston end cap 2-5 are threadedly attached in outer piston cylinder 2-1 left end, set on piston end cap 2-5
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-hand member fluid in damping oil cylinder 1, right in 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 closely pastes with the 2-3-1 of spool bore II
Close, the fluid of the inside right-hand member of damping oil cylinder 1 flows by 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 successively
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, two-way pressure limiting piston 2 extrudes damping oil cylinder 1
Interior left end fluid, left end oil liquid pressure is more than right-hand member oil liquid pressure in damping oil cylinder 1, pressure official post valve element II in 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 is bonded closely with the 2-2-1 of spool bore I, and the fluid of the inside left end of damping oil cylinder 1 is successively by 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, 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 fittings
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, prevent dust from entering damping oil cylinder 1 or abrasion oil sealing 5 with piston rod 6 and influenceing sealing.
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 with being plugged in oil sealing 5, piston rod 6 was formed piston rod 6 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, and 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 have good sealing.
Embodiment eight：
Illustrate present embodiment with reference to Fig. 1-9, present embodiment is described further to embodiment two, described double
It is circular sleeve 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, current limliting
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 contacts 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 both ends of pressure limiting piston 2, the distance increase that the 2-3 of valve element I is moved to the left, so as to
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, be advantageous 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 contacts 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 the madial wall of oil cylinder 1, 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, valve element
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 is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In the scope of protection of the utility model.
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), and 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).
A kind of 2. 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) are 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 cylindrical structure, and spool bore I (2-2-1), valve core case (2-2) and valve are provided with 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), set on valve element I (2-3)
Spool bore II (2-3-1), spool bore II (2-3-1) are less than the cone structure of right-hand member the diameter, (2-3- of spool bore II for left end diameter
1) grafting valve element II (2-4) in, the valve element II (2-4) are less than the frustum cone structure of right-hand member diameter, the piston for left end diameter
End cap (2-5) is threadedly attached in outer piston cylinder (2-1) left end, and multiple oil leak holes II are provided with piston end cap (2-5)
(2-5-1), piston end cap (2-5) left end are 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).
A kind of 3. 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.
A kind of 4. 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.
A kind of 5. 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.
A kind of 6. 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).
A kind of 7. 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.
A kind of 8. 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) are 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) are socketed in current limliting fore-set II (2-9) outside.
A kind of 9. 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.
A kind of 10. 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), valve element I (2-3) lateral wall,
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983179.6U CN207049243U (en) | 2017-08-08 | 2017-08-08 | A kind of damper with two-way pressure limiting piston |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983179.6U CN207049243U (en) | 2017-08-08 | 2017-08-08 | A kind of damper with two-way pressure limiting piston |
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| Publication Number | Publication Date |
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| CN207049243U true CN207049243U (en) | 2018-02-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
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2017
- 2017-08-08 CN CN201720983179.6U patent/CN207049243U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535082A (en) * | 2020-05-09 | 2020-08-14 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
| CN111535082B (en) * | 2020-05-09 | 2021-08-10 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20210808 |