CN107781255B - A kind of resilient push structure - Google Patents
A kind of resilient push structure Download PDFInfo
- Publication number
- CN107781255B CN107781255B CN201710942314.7A CN201710942314A CN107781255B CN 107781255 B CN107781255 B CN 107781255B CN 201710942314 A CN201710942314 A CN 201710942314A CN 107781255 B CN107781255 B CN 107781255B
- Authority
- CN
- China
- Prior art keywords
- piston
- spring
- push rod
- housing cavity
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of resilient push structures, including shell, piston, the first spring, second spring and push rod；Piston, the first spring, second spring and push rod are installed in housing cavity, and housing cavity is plunger shaft；First spring is arranged between piston and push rod, so that forming elastic thrust between piston and push rod；Second spring is arranged between shell and piston, provides elastic-restoring force for piston；With the restraining position of piston in housing cavity, when piston reaches restraining position, the push rod can continue to slide relative to piston.The present invention is converted into the general rigidity transmission of piston displacement the flexible transfer of the pusher structure with damping element, it can play the role of buffering impact force, the compressible range for passing through damping cavity simultaneously, ensure that system can effectively work in the upper and lower biggish situation of grade stroke difference.
Description
Technical field
The present invention relates to valve member field, in particular to a kind of resilient push structure is mainly used for the transmitting of piston displacement.
In mechanical hydraulic unit, it usually needs the displacement of some pistons is transmitted to low-level device, completes specific function.
Background technique
In mechanical hydraulic unit, the displacement of piston calculates or pushes low-level device commonly used in controller.The former passes through
Displacement sensor can be realized；Piston displacement is directly delivered to low-level device often using rigid output by the latter.
Summary of the invention
The purpose of invention
Since piston traveling speed is very fast, existing rigidity output often has that impact force is larger；It can draw simultaneously
Play the unmatched problem of the superior and the subordinate's stroke.By previous displacement, rigidly output improves the present invention, (such as by band damping element
Spring, waveform spring, oil nozzle etc.) pusher structure, the displacement of piston is exported, thus play buffering impact force work
With；It ensure that the matching of the superior and the subordinate's stroke by the compressible range of damping cavity simultaneously.
Technical solution
The purpose of the present invention is what is realized by following measures.A kind of resilient push structure, including shell, work are provided
Plug, the first spring, second spring and push rod；Piston, the first spring, second spring and push rod are installed in housing cavity, shell
Intracoelomic cavity is plunger shaft；First spring is arranged between piston and push rod, so that forming elastic thrust between piston and push rod；The
Two springs are arranged between shell and piston, provide elastic-restoring force for piston；With the limit position of piston in housing cavity
It sets, when piston reaches restraining position, the push rod can continue to slide relative to piston.
Further, the piston is cylindrical structure, and first spring is arranged in cylindrical structure bottom and push rod one end
Between portion, push rod one end is slidably matched with cylindrical structure inner wall.
Further, the cylindrical structure inner wall has stepped part or convex shoulder, and described second spring one end is limited in rank
Terraced portion or convex shoulder.
Further, at least one sealing ring is provided between piston and housing cavity.
Further, the shell is high pressure valve body.
Further, the second spring is limited between shell and piston by spring base.
Technical effect
The present invention is converted into the general rigidity transmission of piston displacement the flexible transfer of the pusher structure with damping element, energy
Enough play the role of buffering impact force, while passing through the compressible range of damping cavity, ensure that system in upper and lower grade stroke difference
It can effectively work in biggish situation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Wherein: shell 1, piston 2, the first spring 3, the second bullet 4, push rod 5, spring base 6, sealing ring 7, stepped part 8.
Specific embodiment
The present invention provides a kind of resilient push structure, including shell 1, piston 2, the first spring 3, second spring 4 and push away
Bar 5；Piston, the first spring, second spring and push rod are installed in housing cavity, and housing cavity is plunger shaft；First spring
It is arranged between piston and push rod, so that forming elastic thrust between piston and push rod；Second spring is arranged in shell and piston
Between, elastic-restoring force is provided for piston；With the restraining position of piston in housing cavity, when piston reaches restraining position
When, the push rod can continue to slide relative to piston；The piston is cylindrical structure, and first spring is arranged in cartridge type
Between structural base and push rod one end, push rod one end is slidably matched with cylindrical structure inner wall；The cylindrical structure inner wall
There is stepped part, described second spring one end is limited in stepped part 8；A sealing ring 7 is provided between piston and housing cavity.
Further, the second spring is limited between shell and piston by spring base 6.
When piston starts mobile, second spring is compressed, and piston is identical as the mobile magnitude of push rod；When piston is moved to
When to a certain degree, push rod touches junior's movable part, and pushes junior's movable part mobile, such as lever assembly；When junior is living
Dynamic component moves to extreme position, and push rod passively stops moving, and damping element (the first spring) is caused to be compressed, and rises to impact force
Buffer function has been arrived, while low-level device being allowed to move in lesser stroke range.
Claims (2)
1. a kind of resilient push structure, including shell, piston, the first spring, second spring and push rod；Piston, the first spring,
Two springs and push rod are installed in housing cavity, and housing cavity is plunger shaft；First spring is arranged between piston and push rod,
So that forming elastic thrust between piston and push rod；Second spring is arranged between shell and piston, provides elasticity for piston and returns
Multiple power；With the restraining position of piston in housing cavity, when piston reaches restraining position, the push rod can be relative to
Piston continues to slide；
The piston is cylindrical structure, and first spring is arranged between cylindrical structure bottom and push rod one end, push rod one
End is slidably matched with cylindrical structure inner wall；
The cylindrical structure inner wall has stepped part or convex shoulder, and described second spring one end is limited in stepped part or convex shoulder；
At least one sealing ring is provided between piston and housing cavity；
The shell is high pressure valve body.
2. a kind of resilient push structure as described in claim 1, it is characterised in that: the second spring is limited by spring base
Between shell and piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942314.7A CN107781255B (en) | 2017-10-11 | 2017-10-11 | A kind of resilient push structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710942314.7A CN107781255B (en) | 2017-10-11 | 2017-10-11 | A kind of resilient push structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107781255A CN107781255A (en) | 2018-03-09 |
| CN107781255B true CN107781255B (en) | 2019-11-15 |
Family
ID=61434561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710942314.7A Active CN107781255B (en) | 2017-10-11 | 2017-10-11 | A kind of resilient push structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107781255B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253575A (en) * | 2020-10-14 | 2021-01-22 | 贵州新安航空机械有限责任公司 | Split type piston |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2818410A1 (en) * | 1978-04-27 | 1979-11-08 | Bosch Gmbh Robert | SPRING BRAKE CYLINDER |
| DE4038950A1 (en) * | 1990-12-06 | 1992-06-11 | Schloemann Siemag Ag | PISTON CYLINDER UNIT FOR THE PRODUCTION AND TRANSMISSION OF PRESSURE FORCES |
| KR20160042904A (en) * | 2013-08-16 | 2016-04-20 | 체체이 아게 | Actuating device and method for actuating a valve |
-
2017
- 2017-10-11 CN CN201710942314.7A patent/CN107781255B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107781255A (en) | 2018-03-09 |
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