CN107143603A - Valve component, piston unit and oil-pressure damper - Google Patents
Valve component, piston unit and oil-pressure damper Download PDFInfo
- Publication number
- CN107143603A CN107143603A CN201710512103.XA CN201710512103A CN107143603A CN 107143603 A CN107143603 A CN 107143603A CN 201710512103 A CN201710512103 A CN 201710512103A CN 107143603 A CN107143603 A CN 107143603A
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- China
- Prior art keywords
- valve
- piston
- valve element
- oil
- hole
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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
- F16F9/32—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
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
Abstract
The present invention proposes a kind of valve component, it is arranged on the piston only of oil-pressure damper, fluid bore is provided with valve bonnet, fluid above the piston only passes sequentially through the fluid bore and outlet to realize off-load and vibration-damping function, avoid the influence to the form and position tolerance between the valve bonnet and valve element when processing unloading port on the wall of valve element blind hole side in the prior art, the fit precision between the valve bonnet and valve element is ensure that, and then makes the valve component of the present invention that there is the quality and precision property of stabilization.Present invention further propose that a kind of piston unit, applied to foregoing valve component on oil-pressure damper, is provided with, with stabilised quality and precision property.Present invention further propose that a kind of oil-pressure damper, is provided with foregoing piston unit, with stabilised quality and precision property.
Description
Technical field
The invention belongs to rail locomotive vehicle oil-pressure damper technical field, more particularly to a kind of valve component, piston
Unit and oil-pressure damper.
Background technology
Rail locomotive vehicle oil-pressure damper includes working cylinder and the piston unit being placed in working cylinder, the oil cylinder
In be filled with off-load fluid, referring to Fig. 1 and Fig. 2, the piston unit include piston only 11, the top of the piston only 11
One or more valve component is provided with, each valve component includes valve bonnet 12, valve element 13 and spring 14.The valve
Cover 12 and valve element 13 be cylindrical-shaped structure, the valve bonnet 12 is axially arranged through hole 121, and the valve element 13 is axially arranged blind
Hole 131, the outer surface of the valve bonnet 12 is threadedly coupled with the piston only 11, and the valve element 13 is sheathed on the valve bonnet 12
In through hole 121, the motion of 121 pairs of the through hole valve element 13 play the guiding role, and the outer surface of the valve element 13 leads to described
The internal surface gaps of hole 121 coordinate, so that closing oil path；Square off-load is provided with the bottom sidewall of the blind hole 131 of valve element 13
Mouthfuls 132, the top of valve element 13 is connected by spring 14 with the piston only 11 so that the valve element 13 can be moved up and down,
Oil sealing portion 15 is provided with the valve element, the spring 14 can oppress the upper surface of oil sealing portion 15 and the lower surface of valve bonnet 12
Fit with closing oil path, outlet is provided with the position corresponding with the valve element 13 on the bottom surface of the piston only 11
111；When the piston only 11 is moved upwards, the oil liquid pressure increase of the top of piston only 11, the valve element 13 is in fluid
Pressure under move down, the unloading port 132 is separated with the inner surface of 12 through hole of valve bonnet 121, on the piston only 11
Square fluid passes sequentially through the outlet 111 of blind hole 131, unloading port 132 and the piston only 11 of the valve element 13, from piston only
11 tops flow into the lower section of piston only 11, so as to complete unloading process, reach effectiveness in vibration suppression.In order that oil-pressure damper is with double
To off-load and effectiveness in vibration suppression, be further provided with valve component, the bottom of piston only 11 on the bottom of piston only 11
The valve component in portion and the valve component at the top of piston only 11 mutually deviate from and are staggered.
From the foregoing, the gap between the valve bonnet inner surface and the valve core outer surface coordinates, it is ensured that stationary flow
The up and down motion of the valve element freely is oriented to, therefore, the cooperation morpheme between the valve bonnet inner surface and the valve core outer surface
Tolerance has very important influence to valve component and piston unit, and on the quality stability of whole oil-pressure damper.
But, process unloading port during, inevitably clamp the valve core outer surface, at the same valve core outer surface also by
To the mutation strength impact from process tool, and then the cylindricity and perpendicularity of the valve core outer surface are influenceed, influence is described
Gap fit tolerance between valve bonnet inner surface and the valve core outer surface, and then influence the oil-pressure damper quality and precision
Stability.
Therefore, a kind of valve component, the work using the valve component of the quality and precision property with stabilization are designed
The oil-pressure damper of unit and the application piston unit is filled in, is very important to those skilled in the art.
The content of the invention
The present invention is directed to existing oil-pressure damper quality and the unstable technical problem of precision, proposes a kind of with stable
Quality and the valve component of precision property, the oil pressure of the piston unit using the valve component and application piston unit subtract
Shake device.
In order to achieve the above object, the technical solution adopted by the present invention is：
A kind of valve component, is arranged on the piston only of oil-pressure damper, including valve bonnet, and is movably sheathed on
Valve element inside the valve bonnet, the outer surface of the valve bonnet is connected with the piston only, and the valve bonnet is provided with pilot hole, institute
Valve core housing is stated in the pilot hole, the valve element coordinates with closing oil path with the guiding interporal lacuna；The valve element and institute
Piston only elastic connection is stated, the valve bonnet is provided with unloading hole, the valve bonnet away from one end of the pilot hole and sets institute
The one end for stating pilot hole is further provided with fluid bore, and the fluid bore is connected with the unloading hole；The valve element is further
It is sheathed in the unloading hole, the outer surface of the valve element and the internal surface gaps of the unloading hole coordinate with the fluid that circulates.
Preferably, the valve element is further provided with that the oil sealing portion with closing oil path, institute can be engaged with the valve bonnet
State oil sealing portion to be arranged at below the valve bonnet, the top surface in the oil sealing portion is fitted with the bottom surface of the valve bonnet.
Preferably, the valve element is further provided with tapered portion, the tapered portion is sheathed in the unloading hole, described
Tapered portion coordinates with the fluid that circulates with the off-load interporal lacuna.
Preferably, the valve bonnet is further provided with shoe cream room, the top of the shoe cream room respectively with the pilot hole
It is connected with fluid bore, the bottom of the shoe cream room is connected with the unloading hole.
Preferably, the valve element axially arranged has throttle orifice, the phase of the valve element away from one end of the piston only
Axially arranged to the other end to have the second blind hole, the throttle orifice is connected with second blind hole.
The present invention further provides a kind of piston unit, it is arranged in oil-pressure damper, including piston only, the piston
Foregoing valve component is provided with body.
Preferably, the valve component is axially set in the top and bottom of the piston only.
Preferably, the valve component of the valve component and the piston only bottom at the top of the piston only is in axial direction
Upper interlaced setting.
Preferably, the circumferentially distributed top in the piston only of valve component at the top of the piston only；Institute
State the circumferentially distributed bottom in the piston only of valve component of piston only bottom.
The present invention further provides a kind of oil-pressure damper, including working cylinder, foregoing work is provided with the working cylinder
Fill in unit.
Compared with prior art, advantages and positive effects of the present invention are：
1st, valve component of the invention sets the fluid above fluid bore, the piston only to lead to successively on the valve bonnet
Cross the fluid bore and outlet to realize off-load and vibration-damping function, it is to avoid in the prior art on the valve element blind hole side wall
Influence during processing unloading port to the form and position tolerance between the valve bonnet and valve element, it is ensured that matching somebody with somebody between the valve bonnet and valve element
Precision is closed, and then makes valve component of the present invention that there is stable quality and precision.
2nd, the fluid above valve component of the invention, the piston only respectively flows through the unloading hole and the valve element
Between path, the top surface in the oil sealing portion and the valve bonnet bottom surface between path when, be uniform flow in a circumferential direction
Cross, the radial load that the fluid is produced to the valve element is cancelled out each other, it is to avoid the local stress fatigue of the valve element, further
Ground improves the quality and service life of valve component of the present invention.
3rd, set on valve component of the invention, the valve element and tapered portion be set, the tapered portion outer surface with it is described
Variable cross-section fluid path is formed between off-load internal surface of hole, it is to avoid though because when the valve element is just moved downward at this circulation compared with
Many fluid amount and the situation for causing moment off-load, make the gentle off-load of valve component of the present invention, further increase quality steady
It is qualitative, and make the requirement that the valve component of the present invention meets damping force and unloading rate is linear or class is linear.
4th, valve component of the invention, the valve bonnet is further provided with shoe cream room, valve described in the shoe cream room available buffer
Core moves downward impact of the fluid described in moment to the tapered portion outer surface, further improves the quality of valve component of the present invention
Stability.
5th, valve component of the invention, the throttle orifice is arranged at the top of the valve element, with throttling of the prior art
Hole is compared, not only easy to process, and the cooperation essence of the valve core outer surface and the through-hole inner surface is not interfered with during processing
Degree.
Brief description of the drawings
Fig. 1 is the structural representation of prior art oil-pressure damper piston unit；
Fig. 2 is A-A directions sectional view in Fig. 1；
Fig. 3 is the structural representation of valve component of the present invention；
Fig. 4 is the top view of valve component of the present invention and piston unit.
Above in each figure：11st, piston only；111st, outlet；12nd, valve bonnet；121st, through hole；13rd, valve element；131st, blind hole；
132nd, unloading port；133rd, throttle orifice；14th, spring；15th, oil sealing portion；
21st, piston only；211st, outlet；22nd, valve bonnet；221st, pilot hole；222nd, unloading hole；223rd, fluid bore；224、
Shoe cream room；23rd, valve element；231st, oil sealing portion；232nd, tapered portion；233rd, throttle orifice；234th, the second blind hole；24th, spring.
Embodiment
Below, the present invention is specifically described by exemplary embodiment.It should be appreciated, however, that not entering one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.
In the description of the invention, it is necessary to which explanation, axially refers to the axial direction of working cylinder and piston only, be also piston
The direction of body motion；Circumferentially refer to the circumferencial direction of working cylinder and piston only；Radially refer to working cylinder and piston only
Radial direction；The orientation or position relationship of the instruction such as term " top ", " bottom " " interior ", " outer ", " on ", " under ", "front", "rear" are base
In the position relationship shown in accompanying drawing 2 and accompanying drawing 3, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying and be relative
Importance.
Referring to Fig. 3, Fig. 3 is the structural representation of valve component of the present invention.As shown in figure 3, a kind of valve component, is arranged at
On the piston only 21 of oil-pressure damper, filled for closing or opening oil circuit with realizing in damping effect, the oil-pressure damper
Fluid is marked with, valve component of the invention includes valve bonnet 22, valve element 23 and spring 24, outer surface and the work of the valve bonnet 22
Plug body 21 is threadedly coupled, and threaded connection place plays sealing glue to meet the requirement of closing oil path；The valve bonnet 22 is axially arranged
There are pilot hole 221 and unloading hole 222, the valve element 23 is from top to bottom sheathed on the pilot hole 221 and unloading hole 222 successively
In, the outer surface at the top of valve element 23 and the inner surface premise clearance fit of the pilot hole 221, the precision that the gap coordinates
Meet accurate guide function and being capable of closing oil path, the outer surface of the bottom of valve element 23 and the interior table of the unloading hole 222
Face gap coordinates to form the path that can pass through fluid；The valve bonnet 22 is provided with fluid bore 223 axially further, described to unload
The top in lotus hole 222 is connected with the pilot hole 221 and fluid bore 223 respectively, and the fluid of the top of piston only 21 can
Flowed into by the fluid bore 223 between the unloading hole 222 and the valve element 23 in path；The bottom surface of valve element 23 with it is described
The bottom surface elastic connection of piston only 21, i.e., the bottom surface phase of the described underrun spring 24 of valve element 23 and the piston only 21
Even, the bottom surface of the piston only 21 position corresponding with the valve element 23 is provided with outlet 211；When the piston only
When the 21 top fluid compressing valve elements 23 are moved downward, the spring 24 will be compressed, the fluid bore 223 and the piston
The lower section fluid of body 21 is connected, so that the fluid of the top of the piston only 21 passes sequentially through the fluid bore 223 and row
Outlet 211 is connected with the fluid of the lower section of piston only 21, and then realizes off-load and vibration-damping function.The valve body group of the present invention
Part, by setting fluid bore 223 to realize off-load and vibration-damping function on the valve bonnet 22, it is to avoid in the prior art described
Influence on the side wall of 13 blind hole of valve element 131 during processing unloading port 132 to the form and position tolerance between the valve bonnet 12 and valve element 13, is protected
The fit precision between the valve bonnet 22 and valve element 23 has been demonstrate,proved, and then has made valve component of the present invention that there is stable quality and precision
Performance.
Further, unloading port 132 of the prior art is arranged at the side of the blind hole of valve element 13, the piston only
The fluid of 11 tops flows into the lower section of piston only 11 by the unloading port 132, and the fluid flows through the unloading port 132
When radial load inevitably is produced to the side wall of valve element 13 of the opposite side of unloading port 132, and then influence the valve element 13
Service life；The valve component of the present invention, the fluid of the top of piston only 21 flows through the unloading hole 222 and the valve
It is to flow uniformly through in a circumferential direction, the radial load that the fluid is produced to the valve element 23 is mutual during path between core 23
Offset, it is to avoid the local stress fatigue of the valve element 23, further increasing the quality of valve component of the present invention and use
Life-span.
With continued reference to Fig. 3, as shown in figure 3, the valve element 23 is further provided with oil sealing portion 231,231, the oil sealing portion
In it is described can be with the lower section of the valve bonnet 22, the top surface in the oil sealing portion 231 is adjacent with the bottom surface of the valve bonnet 22, the regulation bullet
The pretightning force of spring 24 makes the top surface in the oil sealing portion 231 be fitted with the bottom surface of the valve bonnet 22, with prevent the unloading hole 222 with
Fluid between the valve element 23 is connected with the fluid of the bottom of valve element 23.
Specifically, during initial position, the oil liquid pressure balance above and below the piston only 21,23 sets of the valve element
In the pilot hole 221 and unloading hole 222, path passes through the fluid between the unloading hole 222 and the valve element 23
Hole 223 is connected with the fluid of the top of piston only 21, the bottom surface phase of the top surface in the oil sealing portion 231 and the valve bonnet 22
Coordinate with closing oil path；When the piston only 21 is moved upwards, the oil liquid pressure increase of the top of piston only 21, institute
The fluid for stating the top of piston only 21 oppresses the valve element 23 and spring 24, and moves downward the valve element 23 and make the bullet
Spring 24 compresses, so that the top surface in the oil sealing portion 231 is separated with the bottom surface of valve bonnet 22, and then opens oil circuit, i.e. the work
The fluid of plug body 21 top pass sequentially through path between the fluid bore 223, the unloading hole 222 and the valve element 23,
Path between the top surface in the oil sealing portion 231 and the bottom surface of the valve bonnet 22 flows into the bottom of valve element 23, and eventually through institute
State outlet 211 and flow into the lower section of piston only 21, the oil liquid pressure above and below the piston only 21 is balanced each other,
Reach off-load and effectiveness in vibration suppression；When 21 stop motion of piston only, the restoring force of the spring 24 makes the valve element 23
Motion, makes the top surface in the oil sealing portion 231 be fitted again with the bottom surface of valve bonnet 22, so that oil circuit is closed again upwards.
Referring to Fig. 3 and Fig. 4, as shown in Figure 3 and Figure 4, the fluid bore 223 is arranged at the circumferential exterior of pilot hole 221
Circumferential ring body in, and the fluid bore 223 may be configured as one or more, to meet different off-load and damping requirements.
When the fluid bore 223 is multiple, in order that fluid circulation is uniform in unloading process, the multiple fluid bore 223 is uniformly divided
In the circumferential ring body for being distributed in the circumferential exterior of pilot hole 221.
With continued reference to Fig. 3, as shown in figure 3, the valve element 23 is further provided with tapered portion 232,232 sets of the tapered portion
In the unloading hole 222, fluid is formed between the outer surface of the tapered portion 232 and the inner surface of the unloading hole 222
Path, and connected with the fluid in the fluid bore 223, so as to flow through the fluid of the top of piston only 21.It is described
The tip of tapered portion 232 is towards the pilot hole 221, i.e., when the valve element 23 is moved downward, the outer surface of tapered portion 232
The fluid area of passage between the inner surface of unloading hole 222 gradually increases, so that the fluid amount flowed through at this gradually increases
Plus, it is to avoid the feelings of moment off-load caused by even if circulating more fluid amount at this when the valve element 23 is just moved downward
Condition, makes the gentle off-load of valve component of the present invention, further increases quality stability.
Further, as the valve element 23 continues to move downward, the decrement increase of the spring 24, i.e. send out this
Bright valve component produces bigger damping, while moving downward for the valve element 23 causes the appearance of tapered portion 232
Fluid path face between face and the inner surface of the unloading hole 222 gradually increases, the fluid amount increase flowed through at this, that is, reaches fast
The effect of fast off-load, makes the requirement that the valve component of the present invention meets damping force and unloading rate is linear or class is linear.
With continued reference to Fig. 3, as shown in figure 3, the valve bonnet 22 is further provided with shoe cream room 224, the shoe cream room 224
Between the pilot hole 221 and unloading hole 222, and the shoe cream room 224 top respectively with the pilot hole 221 and fluid
Hole 223 is connected, and the bottom of the shoe cream room 224 is connected with the unloading hole 222, because of the valve element 23 and the pilot hole
221 premise clearance fit can realize accurate guide function and can closing oil path, when the valve element 23 is sheathed on the guiding
When in hole 221 and unloading hole 222, the fluid of the top of piston only 21 can pass through the fluid bore 223 and the shoe cream room
224 are connected, valve element 23 described in the available buffer of shoe cream room 224 move downward fluid described in moment to the tapered portion 232 outside
The impact on surface further improves the quality stability of valve component of the present invention.
With continued reference to Fig. 3, as shown in figure 3, the valve element 23 axially arranged has throttle orifice away from one end of the spring 24
233, the opposite other end of the valve element 23 is axially arranged the second blind hole 234, the throttle orifice 233 and second blind hole
234 are connected.When the piston only 21 produces trickle upward motion, i.e., the oil liquid pressure of the described top of piston only 21 is slightly
There is an increase, and the oil liquid pressure, when being not enough to overcome the elastic force of the spring 24, the fluid of the top of piston only 21 can lead to
Cross the throttle orifice 233 to flow into second blind hole 234, and work is flowed into by the outlet 211 on the piston only 21
The lower section of body 21 is filled in, so as to realize off-load and effectiveness in vibration suppression.
It should be noted that referring to Fig. 1 and Fig. 2, in the prior art, the bottom of the blind hole 131 of the valve element 13 is radially set
Throttle orifice 133 is equipped with, the throttle orifice 133 connects the fluid in the blind hole 131 and the fluid of the lower section of piston only 11
Logical, when the piston only 11 produces trickle upward motion, the fluid of the top of piston only 11 can pass sequentially through institute
State blind hole 131 and throttle orifice 133 flows into the lower section of piston only 11, to realize off-load and effectiveness in vibration suppression.But because of the throttle orifice
133 are located at the bottom surface of the blind hole 132, and processing is inconvenient, and when processing the throttle orifice 133, it is necessary to clamp described
The outer surface that valve element 13 is engaged with the through hole 121 of valve bonnet 12, inevitably influences the outer surface of valve element 13 and institute
State the fit precision of the inner surface of through hole 121.
Further, valve component of the invention, by setting throttle orifice 233 on the top of the valve element 23, passes through institute
State throttle orifice 233 makes the fluid of the upper and lower of piston only 21 be connected with the second blind hole 234, and the throttle orifice 233 is set
It is not only easy to process on the top of the valve element 23, and when processing the throttle orifice 233, the valve element only need to be clamped
The outer surface of 23 least significant ends, the outer surface at this is non-matching surface, and then does not interfere with matching somebody with somebody for valve component of the present invention
Precision is closed, the quality of valve component of the present invention and the stability of precision is further increased.
In order to further improve the sealing property of valve component of the present invention, the valve bonnet 22 and the screw thread of piston only 21
The screw thread vice division chief of connection is coated with thread locking adhesive, is consolidated with ensureing that the valve bonnet 22 is installed in place rear position, and improve
The sealing property of screw thread pair, further increases valve component of the present invention and starves quality stability.
Present invention further propose that a kind of piston unit, is arranged in oil-pressure damper, including piston only 21, the work
Foregoing valve component is provided with plug body 21.
With continued reference to Fig. 4, as shown in figure 4, the valve component is axially set in the top and bottom of the piston only 21
The valve component at portion, the valve component of the bottom of piston only 21 and the top of piston only 21, which mutually deviates from, to be set, i.e.
The valve component at the top of piston only 21 is with the valve component of the bottom of piston only 21 on the piston only
Central horizontal face is symmetrical arranged.
In order that the piston unit of the present invention smoothly realizes two-way off-load and vibration-damping function, the top of piston only 21
Valve component and the valve component setting interlaced in the axial direction of the bottom of piston only 21.
With continued reference to Fig. 4, as shown in figure 4, the valve component at the top of the piston only 21 may be configured as one or many
It is individual, to meet different damping requirements.When the valve component at the top of piston only 21 is set to multiple, the multiple valve
Body component is uniformly distributed circumferentially in the top of the piston only 21, when being moved upwards with increasing inventive piston body 21,
Stability during piston unit off-load and vibration damping.
Specifically, when the piston only 21 is moved upwards, the oil liquid pressure increase of the top of piston only 21 is simultaneously
The spring 21 for oppressing the top body component of piston only 21 compresses, and the spring 21 drives the crown valve of piston only 21
The valve element 23 of body component declines, so that the top surface of 23 oil sealing portion of the valve element 231 is separated with the bottom surface of valve bonnet 22, the piston
The fluid of the top of body 21 pass sequentially through passage between the fluid bore 223, shoe cream room 224, tapered portion 232 and unloading hole 222,
Outlet 211 flows into the lower section of piston only 21, realizes off-load and effectiveness in vibration suppression.Multiple valves at the top of piston only 21
In body component, one or more the top of valve element 23 sets throttle orifice 233, and when the piston only 21, motion is drawn upwards
When the increase of the top oil liquid pressure of piston only 21 risen is not enough to compression spring 21, the top fluid of piston only 21 is successively
The lower section of piston only 21 is flowed into by the blind hole 234 of throttle orifice 233 and second, to realize off-load and effectiveness in vibration suppression.
Further, the valve component of the bottom of piston only 21 may be configured as one or more, to meet difference
Damping requirements.When the valve component of the bottom of piston only 21 is set to multiple, the multiple valve component is circumferentially
The bottom of the piston only 21 is uniformly distributed in, when being moved downward with increasing piston unit 21, inventive piston unit off-load
With the stability during vibration damping.
Specifically, when the piston only 21 is moved downward, the oil liquid pressure increase of the lower section of piston only 21 is simultaneously
The spring 21 for oppressing the bottom body component of piston only 21 compresses, and the spring 21 drives the bottom valve of piston only 21
The valve element 23 of body component rises, so that the bottom surface of 23 oil sealing portion of the valve element 231 is separated with the top surface of valve bonnet 22, the piston
The fluid of the lower section of body 21 pass sequentially through passage between the fluid bore 223, shoe cream room 224, tapered portion 232 and unloading hole 222,
Outlet 211 flows into the top of piston only 21, realizes off-load and effectiveness in vibration suppression.Multiple valves of the bottom of piston only 21
In body component, one or more the bottom of valve element 23 sets throttle orifice 233, draws when the piston only 21 is moved downward
When the increase of the lower section oil liquid pressure of piston only 21 risen is not enough to compression spring 21, the lower section fluid of piston only 21 is successively
The top of piston only 21 is flowed into by the blind hole 234 of throttle orifice 233 and second, to realize off-load and effectiveness in vibration suppression.
Present invention further propose that a kind of oil-pressure damper, including working cylinder, foregoing work is provided with the working cylinder
Fill in unit.It is not described in detail herein.
Claims (10)
1. a kind of valve component, is arranged on the piston only of oil-pressure damper (21), including valve bonnet (22), and movably
The internal valve element (23) of the valve bonnet (22) is sheathed on, the outer surface of the valve bonnet (22) is connected with the piston only (21),
The valve bonnet (22) is provided with pilot hole (221), and the valve element (23) is sheathed in the pilot hole (221), the valve element
(23) coordinate with the pilot hole (221) gap with closing oil path；The valve element (23) connects with the piston only (21) elasticity
Connect, it is characterised in that：The valve bonnet (22) is provided with unloading hole (222), the valve bonnet away from one end of the pilot hole (221)
(22) set one end of the pilot hole (221) to be further provided with fluid bore (223) on, the fluid bore (223) with it is described
Unloading hole (222) is connected；
The valve element (23) is further sheathed in the unloading hole (222), outer surface and the off-load of the valve element (23)
The internal surface gaps in hole (222) coordinate with the fluid that circulates.
2. valve component according to claim 1, it is characterised in that：The valve element (23) be further provided with can with it is described
Valve bonnet (22) is engaged the oil sealing portion (231) with closing oil path, and the oil sealing portion (231) is arranged at below the valve bonnet (22),
The top surface of the oil sealing portion (231) is fitted with the bottom surface of the valve bonnet (22).
3. valve component according to claim 1, it is characterised in that：The valve element (23) is further provided with tapered portion
(232), the tapered portion (232) is sheathed in the unloading hole (222), the tapered portion (232) and the unloading hole (222)
Gap coordinates with the fluid that circulates.
4. valve component according to claim 3, it is characterised in that：The valve bonnet (22) is further provided with shoe cream room
(224), the top of the shoe cream room (224) is connected with the pilot hole (221) and fluid bore (223) respectively, the oil storage
The bottom of chamber (224) is connected with the unloading hole (222).
5. valve component according to claim 1, it is characterised in that：The valve element (23) deviates from the piston only (21)
One end it is axially arranged have throttle orifice (233), the opposite other end of the valve element (23) is axially arranged the second blind hole (234),
The throttle orifice (233) is connected with second blind hole (234).
6. a kind of piston unit, is arranged in oil-pressure damper, including piston only (21), it is characterised in that：The piston sheet
Set on body (21) just like the valve component described in claim any one of 1-5.
7. piston unit according to claim 6, it is characterised in that：The valve component is axially set in the piston sheet
The top and bottom of body (21).
8. piston unit according to claim 7, it is characterised in that：Valve component at the top of the piston only (21) with
The valve component of piston only (21) bottom is interlaced in the axial direction to be set.
9. piston unit according to claim 8, it is characterised in that：Valve component edge at the top of the piston only (21)
The circumferentially distributed top in the piston only (21)；The valve component of piston only (21) bottom is circumferentially distributed in institute
State the bottom of piston only (21).
10. a kind of oil-pressure damper, including working cylinder, it is characterised in that：Set and appoint just like claim 6-9 in the working cylinder
Piston unit described in one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512103.XA CN107143603B (en) | 2017-06-28 | 2017-06-28 | Valve component, piston unit and oil-pressure damper |
| PCT/CN2017/101224 WO2019000646A1 (en) | 2017-06-28 | 2017-09-11 | Valve assembly, piston unit and oil damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710512103.XA CN107143603B (en) | 2017-06-28 | 2017-06-28 | Valve component, piston unit and oil-pressure damper |
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| Publication Number | Publication Date |
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| CN107143603A true CN107143603A (en) | 2017-09-08 |
| CN107143603B CN107143603B (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710512103.XA Active CN107143603B (en) | 2017-06-28 | 2017-06-28 | Valve component, piston unit and oil-pressure damper |
Country Status (2)
| Country | Link |
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| CN (1) | CN107143603B (en) |
| WO (1) | WO2019000646A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000646A1 (en) * | 2017-06-28 | 2019-01-03 | 中车青岛四方车辆研究所有限公司 | Valve assembly, piston unit and oil damper |
| CN110886803A (en) * | 2019-11-29 | 2020-03-17 | 中国北方车辆研究所 | Single-cylinder type hydro-pneumatic spring |
| CN110905960A (en) * | 2019-11-29 | 2020-03-24 | 中国北方车辆研究所 | Two-way discharge vibration damping valve |
| CN112727992A (en) * | 2020-12-22 | 2021-04-30 | 东风越野车有限公司 | Hydro-pneumatic spring base assembly integrating vehicle height sensor and valve bank |
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| WO1981001180A1 (en) * | 1978-04-10 | 1981-04-30 | Maremont Corp | Shock absorber with improved compression valve assembly |
| CN2736598Y (en) * | 2004-05-31 | 2005-10-26 | 深圳市中车业成实业有限公司 | Foot valve assembly for vehicle vibration isolator |
| CN103851122A (en) * | 2012-12-07 | 2014-06-11 | 常州朗锐凯迩必减振技术有限公司 | Overflow valve for oil-pressure damper |
| CN203822930U (en) * | 2014-05-17 | 2014-09-10 | 刘广彬 | Oil pressure absorber for railway vehicle |
| CN105065542A (en) * | 2015-09-18 | 2015-11-18 | 珠海市业成轨道交通设备科技有限公司 | Piston unit of oil-pressure damper for rail locomotive |
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| DE10138504B9 (en) * | 2000-06-13 | 2012-12-13 | Günter Stein | Vorfederrückschlagventil |
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| CN102575739B (en) * | 2009-10-14 | 2013-12-04 | 卡欧特欧自动化工程有限公司 | Linear shock absorber |
| GB2522191B (en) * | 2014-01-15 | 2020-04-29 | Bamford Excavators Ltd | Bi-directional hydraulic flow control valve |
| CN107143603B (en) * | 2017-06-28 | 2019-01-25 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
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- 2017-06-28 CN CN201710512103.XA patent/CN107143603B/en active Active
- 2017-09-11 WO PCT/CN2017/101224 patent/WO2019000646A1/en active Application Filing
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| WO1981001180A1 (en) * | 1978-04-10 | 1981-04-30 | Maremont Corp | Shock absorber with improved compression valve assembly |
| CN2736598Y (en) * | 2004-05-31 | 2005-10-26 | 深圳市中车业成实业有限公司 | Foot valve assembly for vehicle vibration isolator |
| CN103851122A (en) * | 2012-12-07 | 2014-06-11 | 常州朗锐凯迩必减振技术有限公司 | Overflow valve for oil-pressure damper |
| CN203822930U (en) * | 2014-05-17 | 2014-09-10 | 刘广彬 | Oil pressure absorber for railway vehicle |
| CN105065542A (en) * | 2015-09-18 | 2015-11-18 | 珠海市业成轨道交通设备科技有限公司 | Piston unit of oil-pressure damper for rail locomotive |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019000646A1 (en) * | 2017-06-28 | 2019-01-03 | 中车青岛四方车辆研究所有限公司 | Valve assembly, piston unit and oil damper |
| CN110886803A (en) * | 2019-11-29 | 2020-03-17 | 中国北方车辆研究所 | Single-cylinder type hydro-pneumatic spring |
| CN110905960A (en) * | 2019-11-29 | 2020-03-24 | 中国北方车辆研究所 | Two-way discharge vibration damping valve |
| CN110905960B (en) * | 2019-11-29 | 2021-11-30 | 中国北方车辆研究所 | Two-way discharge vibration damping valve |
| CN112727992A (en) * | 2020-12-22 | 2021-04-30 | 东风越野车有限公司 | Hydro-pneumatic spring base assembly integrating vehicle height sensor and valve bank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107143603B (en) | 2019-01-25 |
| WO2019000646A1 (en) | 2019-01-03 |
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