CN209705152U - A kind of piston spring retarding mechanism - Google Patents
A kind of piston spring retarding mechanism Download PDFInfo
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- CN209705152U CN209705152U CN201920407187.5U CN201920407187U CN209705152U CN 209705152 U CN209705152 U CN 209705152U CN 201920407187 U CN201920407187 U CN 201920407187U CN 209705152 U CN209705152 U CN 209705152U
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- piston rod
- piston
- cylinder barrel
- piston head
- centre bore
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Abstract
The utility model discloses a kind of piston spring retarding mechanisms, it include: cylinder barrel and piston rod, one end of piston rod is protruded into cylinder barrel, spacing block is additionally provided in cylinder barrel, the end that piston rod protrudes into one end of cylinder barrel is further fixed on piston head, the outer rim of piston head is mutually agreed with inner wall of cylinder, centre bore is formed in the middle part of piston head, a sliding valve core is further fixed on the end alignment centre bore of piston rod and end face, the end that sliding valve core is located remotely from piston rod side is molded into the capping agreed with center hole end surface, the cross section of piston head towards the side of piston rod is trapezoidal, the through-hole for extending to centre bore is also provided on the side wall of the trapezoidal side of piston head.The utility model greatly reduces stretching force, and then the difference between maximum compression power and stretching force.
Description
Technical field
The utility model relates to gas spring technology field, specially a kind of piston spring retarding mechanism.
Background technique
The external output characteristics of Ordinary Compression gas spring is to provide load lifting force, and it is desirable that frictional force is as small as possible.In
Some use occasions wish that compressing force and stretching force difference want sufficiently large, or even wish that stretching force is negative.
Utility model content
The purpose of this utility model is to provide a kind of piston spring retarding mechanisms, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the utility model provides the following technical solutions: a kind of piston spring retarding mechanism, comprising:
One end of cylinder barrel and piston rod, piston rod is protruded into cylinder barrel, and spacing block is additionally provided in cylinder barrel, and piston rod protrudes into one end of cylinder barrel
End be further fixed on piston head, the outer rim of piston head is mutually agreed with inner wall of cylinder, and centre bore is formed in the middle part of piston head, living
It is further fixed on a sliding valve core on the end alignment centre bore of stopper rod and end face, sliding valve core is located remotely from piston rod side
End is molded into the capping agreed with center hole end surface, and the cross section of piston head towards the side of piston rod is trapezoidal, piston head
Trapezoidal side side wall on be also provided with the through-hole for extending to centre bore, sliding valve core is located in centre bore at position
It is also socketed with compressed spring, sealing ring is further fixed on centre bore inner sidewall, sealing ring is close to the lateral wall of sliding valve core.
Preferably, being injected with high pressure nitrogen and oil liquid in cylinder barrel, cylinder barrel is divided into oil pocket and air cavity by spacing block, isolation
The side of the close piston rod of block is oil pocket, and the side of the separate piston rod of spacing block is air cavity.
Preferably, also forming gasket annular groove, gasket ring on lateral wall of the piston head far from the side of piston rod
Gasket ring is provided in slot.
Preferably, also forming a through slot on lateral wall of the piston head far from the side of piston rod, through slot connection is close
The end face of packing annular groove and piston head far from piston rod side.
Preferably, piston head is towards pressure compensation opening is also formed on the end face of piston rod side, pressure compensation opening prolongs
It extends in gasket annular groove.
Compared with prior art, the utility model has the beneficial effects that the centre bore of the piston head of the utility model is formed
One valve chamber, piston rod end are arranged compressed spring and sliding valve core, have sealing ring on the outside of sliding valve core, so that compressed action
When, oil liquid is entered in rod chamber by piston head outer passage by rodless cavity, and centre bore is by the sealing ring on sliding valve core outer diameter
It shuts, when stretching, since piston head internal and external channel is state of shutting, rod chamber cavity pressure is just constantly increased, thus
Pressure difference is formed in piston two sides, when the pressure in valve chamber is enough to overcome compressed spring, pushes sliding valve core to spacing block side
Mobile, final valve is opened, and the runner for forming centre bore and through-hole is opened, and pressure difference keeps stablizing, to obtain desired resistance
The negative sense stretching force that stagnant piston rod stretches out.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1 is cylinder barrel, and 2 be piston rod, and 3 be spacing block, and 4 be sliding valve core, and 5 be capping, and 6 be through-hole, and 7 be compression
Spring, 8 be gasket annular groove, and 9 be gasket ring, and 10 be sealing ring, and 11 be through slot, and 12 be pressure compensation opening, and 21 be piston head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, the utility model provides a kind of piston spring retarding mechanism, comprising: cylinder barrel 1 and piston rod 2, piston
One end of bar 2 is protruded into cylinder barrel 1, and spacing block 3 is additionally provided in cylinder barrel 1, and the end that piston rod 2 protrudes into one end of cylinder barrel 1 is also solid
Surely there is piston head 21, outer rim and 1 inner wall of cylinder barrel of piston head 21 mutually agree with, and the middle part of piston head 21 forms centre bore, piston
It is further fixed on a sliding valve core 4 on the end alignment centre bore of bar 2 and end face, sliding valve core 4 is located remotely from 2 side of piston rod
End be molded into the capping 5 agreed with center hole end surface, the cross section of piston head 21 towards the side of piston rod 2 is trapezoidal,
The through-hole 6 for extending to centre bore is also provided on the side wall of the trapezoidal side of piston head 21, sliding valve core 4 is located at center
Compressed spring 7 is also socketed in hole at position, sealing ring 10 is further fixed on centre bore inner sidewall, sealing ring 10 is close to slide-valve
The lateral wall of core 4.
High pressure nitrogen and oil liquid are injected in cylinder barrel 1, cylinder barrel 1 is divided into oil pocket and air cavity by spacing block 3, spacing block 3
It is oil pocket close to the side of piston rod 2, the side of the separate piston rod 2 of spacing block 3 is air cavity.
Gasket annular groove 8 is also formed on the lateral wall of side of the piston head 21 far from piston rod 2, in gasket annular groove 8
It is provided with gasket ring 9.
A through slot 11,11 communication seals of through slot are also formed on the lateral wall of side of the piston head 21 far from piston rod 2
The end face of gasket ring slot 8 and piston head 21 far from 2 side of piston rod.
Piston head 21 extends towards pressure compensation opening 12, pressure compensation opening 12 is also formed on the end face of 2 side of piston rod
To gasket annular groove 8.
Working principle are as follows: the centre bore of piston head 21 forms a valve chamber, and 2 end of piston rod is arranged compressed spring 7 and slides
Movable valve plug 4 has sealing ring 10 on the outside of sliding valve core 4, so that oil liquid is by 21 outer passage of piston head by no bar when compressed action
Chamber enters in rod chamber, and centre bore is shut by the sealing ring 10 on 4 outer diameter of sliding valve core, when stretching, due to piston head
21 internal and external channels are state of shutting, and rod chamber cavity pressure just constantly increases, to form pressure difference in piston two sides, work as valve chamber
Interior pressure is enough to overcome compressed spring 7, pushes sliding valve core 4 mobile to 3 side of spacing block, and final valve is opened, and center is made
The runner that hole and through-hole 6 are formed is opened, and pressure difference keeps stablizing, to obtain the negative sense stretching, extension that desired retardance piston rod 2 stretches out
Power.
In the description of the present invention, it should be understood that term " coaxial ", " bottom ", " one end ", " top ", " in
The orientation of the instructions such as portion ", " other end ", "upper", " side ", " top ", "inner", " front ", " center ", " both ends " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " setting ", " connection ", " Gu
Calmly ", the terms such as " being screwed on " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；
It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly, for this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of piston spring retarding mechanism, comprising: one end of cylinder barrel and piston rod, the piston rod is protruded into cylinder barrel, described
Spacing block is additionally provided in cylinder barrel, it is characterised in that: the end that the piston rod protrudes into one end of cylinder barrel is further fixed on piston head,
The outer rim of the piston head is mutually agreed with inner wall of cylinder, and centre bore, the end of the piston rod are formed in the middle part of the piston head
A sliding valve core is further fixed on portion's aligned central holes and end face, the sliding valve core is located remotely from the end of piston rod side
It is molded into the capping agreed with center hole end surface, the cross section of the piston head towards the side of piston rod is trapezoidal, the work
The through-hole for extending to centre bore is also provided on the side wall of the trapezoidal side of chock plug, the sliding valve core is located at centre bore
It is also socketed with compressed spring at interior position, sealing ring is further fixed on the centre bore inner sidewall, the sealing ring is close to sliding
The lateral wall of spool.
2. a kind of piston spring retarding mechanism according to claim 1, it is characterised in that: be injected with high pressure in the cylinder barrel
Cylinder barrel is divided into oil pocket and air cavity by nitrogen and oil liquid, the spacing block, and the side of the close piston rod of the spacing block is oil
Chamber, the side of the separate piston rod of the spacing block are air cavity.
3. a kind of piston spring retarding mechanism according to claim 2, it is characterised in that: the piston head is far from piston rod
Side lateral wall on also form gasket annular groove, be provided with gasket ring in the gasket annular groove.
4. a kind of piston spring retarding mechanism according to claim 3, it is characterised in that: the piston head is far from piston rod
Side lateral wall on also form a through slot, the through slot communication seals gasket ring slot and piston head are far from piston rod side
End face.
5. a kind of piston spring retarding mechanism according to claim 4, it is characterised in that: the piston head is towards piston rod
Pressure compensation opening is also formed on the end face of side, the pressure compensation opening extends in gasket annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407187.5U CN209705152U (en) | 2019-03-28 | 2019-03-28 | A kind of piston spring retarding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407187.5U CN209705152U (en) | 2019-03-28 | 2019-03-28 | A kind of piston spring retarding mechanism |
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| Publication Number | Publication Date |
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| CN209705152U true CN209705152U (en) | 2019-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920407187.5U Active CN209705152U (en) | 2019-03-28 | 2019-03-28 | A kind of piston spring retarding mechanism |
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| Country | Link |
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| CN (1) | CN209705152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826898A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of piston spring retarding mechanism |
-
2019
- 2019-03-28 CN CN201920407187.5U patent/CN209705152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826898A (en) * | 2019-03-28 | 2019-05-31 | 湖州吉信科技发展有限公司 | A kind of piston spring retarding mechanism |
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