CN219827331U - Hydraulic cylinder piston sealing structure - Google Patents
Hydraulic cylinder piston sealing structure Download PDFInfo
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- CN219827331U CN219827331U CN202320962368.0U CN202320962368U CN219827331U CN 219827331 U CN219827331 U CN 219827331U CN 202320962368 U CN202320962368 U CN 202320962368U CN 219827331 U CN219827331 U CN 219827331U
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- Prior art keywords
- ring
- sealing ring
- piston body
- compensation
- piston
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- 238000007789 sealing Methods 0.000 title claims abstract description 86
- 239000013013 elastic material Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 24
- 238000009434 installation Methods 0.000 abstract description 5
- 230000003313 weakening effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model belongs to the technical field of hydraulic cylinder pistons, in particular to a hydraulic cylinder piston sealing structure, which comprises a piston body, a guide ring arranged on the outer side wall of the piston body, and a bottom ring arranged on one side of the guide ring, wherein the bottom ring is of a circular ring structure with a circular section made of elastic materials, the bottom ring is clamped in a groove on the surface of the piston body, and an inner sealing ring is sleeved on the outer side wall of the bottom ring; the utility model has convenient installation, smooth abrasion compensation and longer sealing life, when the outer ring is abraded, the bottom ring elastically resets to enable the inner sealing ring to outwards expand, thereby weakening the deformation degree of the compensation plate and increasing the compensation range of the abrasion sealing ring, when the outer ring is abraded completely, the inner pad is attached to the inner wall of the cylinder body, the compensation plate thoroughly releases elasticity, the inner pad is in a floating state, and during the movement, the inner pad, the inner wall of the piston body and the inner wall of the cylinder body vibrate to generate noise, so that a user can be reminded to replace the utility model.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinder pistons, and particularly relates to a hydraulic cylinder piston sealing structure.
Background
The piston is a core component in the hydraulic cylinder body, and the pressure loss of the hydraulic cylinder can be avoided by sealing between the piston and the cylinder body, so that the sealing treatment of the piston is very important, and the sealing is generally carried out by installing a sealing ring on the outer side of the piston at present;
through investigation publication (bulletin) number: CN214887650U discloses a piston sealing structure, which discloses in the art a technical scheme that the piston sealing structure comprises a piston cylinder, a sliding cavity is formed in the piston cylinder, a piston is arranged in the sliding cavity, and the piston can do reciprocating rectilinear motion along the central line direction of the sliding cavity; the utility model has the technical effects of improving the condition that the traditional piston sealing structure is easy to cause sealing failure due to abrasion, greatly improving the service life of the piston, and the like;
although the sealing ring has a certain compensation effect, the elastic compensation effect is single only through the inner sealing ring, when the inner sealing ring casting is recovered, the compensation effect is gradually weakened, and the elastic force of the outer sealing ring is difficult to stably compensate.
In order to solve the problems, the utility model provides a hydraulic cylinder piston sealing structure.
Disclosure of Invention
To solve the problems set forth in the background art. The utility model provides a hydraulic cylinder piston sealing structure, which has the characteristics of being matched with a plurality of elastic pieces, having smoother compensation effect and prolonging sealing life.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pneumatic cylinder piston seal structure, includes the piston body and installs guide ring on the piston body lateral wall, still including setting up the foundation ring of guide ring one side, the foundation ring is the circular ring structure that the elastic material cross-section is circular, the foundation ring clamp is in the recess of piston body surface, the lateral wall cover of foundation ring is equipped with interior sealing ring, interior sealing ring is the circular ring structure that the cross-section is the rectangle, the lateral wall of interior sealing ring is fixed with a plurality of edges interior sealing ring is the compensating plate that annular distributes, the compensating plate is the snakelike sheet structure of elastic material, a plurality of the compensating plate is kept away from the one end of interior sealing ring is fixed with the wearing and tearing sealing ring that encircles the compensating plate set up, the lateral wall of wearing and tearing sealing ring exposes outside the recess of piston body.
As the preferable piston sealing structure of the hydraulic cylinder, the wear sealing ring is of a double-layer structure, the outer layer of the wear sealing ring is an outer ring, the outer ring is of a circular ring structure which is made of elastic materials and has a rectangular section, the inner side of the outer ring is fixedly provided with a plurality of inner pads of a tile-shaped structure made of plastic materials, the inner pads are in one-to-one correspondence with the compensation plates, and the compensation plates are fixed in the middle of the inner side of the inner pads.
As a preferable sealing structure of the hydraulic cylinder piston, the edge of the outer side wall of the outer ring is of a chamfer structure.
Preferably, the compensation plate has an elastic tendency to extend toward both ends as a piston seal structure of a hydraulic cylinder of the present utility model.
As a piston sealing structure of a hydraulic cylinder of the present utility model, preferably, when the compensation plate is elastically released, the outer side wall of the inner pad is tangent to the outer side wall of the piston body.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has convenient installation, smooth abrasion compensation and longer sealing life, when the outer ring is abraded, the diameter of the outer ring is reduced, the binding force of the outer ring to the bottom ring, the inner sealing ring and the compensation plate is weakened, the compensation plate enables the outer ring to be expanded outwards to compensate, meanwhile, the bottom ring is elastically reset, and the inner sealing ring is expanded outwards, so that the deformation degree of the compensation plate is weakened, the compensation range of the abrasion sealing ring is enlarged, when the outer ring is abraded completely, the inner pad is attached to the inner wall of the cylinder body, the compensation plate thoroughly releases elasticity, the inner pad is in a floating state, and the inner pad, the inner wall of the piston body and the inner wall of the cylinder body vibrate to generate noise in the movement process, so that a user can be reminded of replacing the utility model.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic three-dimensional structure of the present utility model;
FIG. 2 is a schematic elevational view of the present utility model;
FIG. 3 is a schematic view of the installation state structure of the present utility model;
FIG. 4 is a schematic view of the outer ring and inner pad structure of the present utility model;
in the figure: 1. a piston body; 2. a guide ring; 3. a bottom ring; 4. an inner seal ring; 5. a compensation plate; 6. wearing the sealing ring; 61. an outer ring; 62. an inner pad.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 3;
a hydraulic cylinder piston sealing structure comprises a piston body 1 and a guide ring 2 arranged on the outer side wall of the piston body 1;
in this embodiment: through investigation publication (bulletin) number: CN214887650U discloses a piston sealing structure, which discloses in the art a technical scheme that the piston sealing structure comprises a piston cylinder, a sliding cavity is formed in the piston cylinder, a piston is arranged in the sliding cavity, and the piston can do reciprocating rectilinear motion along the central line direction of the sliding cavity; the utility model has the technical effects of improving the condition that the traditional piston sealing structure is easy to cause sealing failure due to abrasion, greatly improving the service life of the piston, and the like;
although the sealing ring has a certain compensation effect, the elastic compensation effect is single only through the inner sealing ring, when the inner sealing ring casting is recovered, the compensation effect is gradually weakened, and the elastic force of the outer sealing ring is difficult to stably compensate.
Further, the method comprises the following steps:
as shown in fig. 1-4;
in combination with the above:
this pneumatic cylinder piston seal structure still includes the foundation ring 3 that sets up in guide ring 2 one side, the foundation ring 3 is the circular ring structure that the elastic material cross-section is circular, the foundation ring 3 clamp is in the recess of piston body 1 surface, the lateral wall cover of foundation ring 3 is equipped with interior sealing ring 4, interior sealing ring 4 is the circular ring structure that the cross-section is the rectangle, the lateral wall of interior sealing ring 4 is fixed with a plurality of compensating plates 5 that are annular distribution along interior sealing ring 4, compensating plate 5 is the snakelike sheet structure of elastic material, the one end that a plurality of compensating plates 5 kept away from interior sealing ring 4 is fixed with the wearing and tearing sealing ring 6 that encircle compensating plate 5 set up, the lateral wall of wearing and tearing sealing ring 6 exposes outside the recess of piston body 1.
In this embodiment: when the piston is installed, the bottom ring 3 is firstly propped open and sleeved in the groove on the piston body 1, then the inner sealing ring 4 and the abrasion sealing ring 6 are propped open and sleeved on the surface of the bottom ring 3, the inner sealing ring 4 and the abrasion sealing ring 6 rebound to enable the bottom ring 3 to be compressed and deformed, the installation and fixation of the piston are completed, when the piston body 1 slides in a cylinder body, the guide ring 2 plays a guiding role, the abrasion sealing ring 6 is contacted with the inner wall of the cylinder body, the gap between the piston body 1 and the inner wall of the cylinder body is sealed by the abrasion sealing ring 6, so that the loss of hydraulic pressure is avoided, when the abrasion sealing ring 6 is worn, the bottom ring 3 and the compensation plate 5 extrude the abrasion sealing ring 6 outwards, so that the abrasion sealing ring 6 is always attached to the inner wall of the cylinder body, the abrasion compensation of the abrasion sealing ring 6 is realized, and the durability of the abrasion sealing ring 6 is increased.
Still further, the method comprises:
in an alternative embodiment, the wear seal ring 6 has a double-layer structure, the outer layer of the wear seal ring 6 is an outer ring 61, the outer ring 61 is a circular ring structure made of elastic materials and having a rectangular cross section, the inner side of the outer ring 61 is fixed with a plurality of inner pads 62 made of plastic materials in tile-shaped structures, the inner pads 62 are in one-to-one correspondence with the compensation plates 5, and the compensation plates 5 are fixed in the middle of the inner sides of the inner pads 62.
In this embodiment: through this design, outer loop 61 and cylinder body inner wall contact, when wearing and tearing produced, the elasticity of outer loop 61 weakens, the elasticity of foundation ring 3, interior sealing ring 4 and compensation board 5 is released, make outer loop 61 outwards expand, the compensation board 5 promotes the outward motion of interior pad 62, interior pad 62 drives outer loop 61 outwards motion, interior pad 62 makes the outer loop 61 after expanding keep into circular, thereby improve the sealed effect of outer loop 61, when outer loop 61 wears out, compensation board 5 is in the complete release state, interior pad 62 can shake in the recess when piston body 1 moves, thereby make a sound, remind the user to need to change wearing and tearing sealing ring 6 in this way, convenience of customers uses.
Still further, the method comprises:
in an alternative embodiment, the outer sidewall edge of the outer ring 61 is a chamfer.
In this embodiment: by this design, the piston body 1 is conveniently installed into the inner wall of the cylinder, and the outer ring 61 is prevented from being clamped at the edge of the cylinder when the piston body 1 is installed.
Still further, the method comprises:
in an alternative embodiment, the compensation plate 5 has a resilient tendency to extend towards both ends.
In this embodiment: through the design, the compensation plate 5 is in a compressed state, so that the abrasion sealing ring 6 can be expanded outwards, and the abrasion sealing ring 6 is attached to the inner wall of the cylinder body.
Still further, the method comprises:
in an alternative embodiment, the outer side wall of the inner pad 62 is tangential to the outer side wall of the piston body 1 when the compensation plate 5 is elastically released.
In this embodiment: through the design, the inner pad 62 is positioned in the groove of the piston body 1, so that the inner pad 62 can be prevented from being in direct contact with the inner wall of the cylinder, and the inner pad 62 is prevented from being pulled against the inner wall of the cylinder.
The working principle and the using flow of the utility model are as follows: when the piston is installed, the bottom ring 3 is firstly propped open and sleeved into the groove on the piston body 1, then the inner sealing ring 4 and the abrasion sealing ring 6 are propped open and sleeved on the surface of the bottom ring 3, the inner sealing ring 4 and the abrasion sealing ring 6 rebound to enable the bottom ring 3 to compress and deform, the installation and fixation of the piston are completed, when the piston body 1 slides in a cylinder body, the guide ring 2 plays a guiding role, the abrasion sealing ring 6 contacts with the inner wall of the cylinder body, a gap between the piston body 1 and the inner wall of the cylinder body is sealed by the abrasion sealing ring 6, so that loss of hydraulic pressure is avoided, when the piston body 1 moves, the outer ring 61 contacts with the inner wall of the cylinder body, when abrasion occurs, the elasticity of the outer ring 61 is weakened, the elasticity of the bottom ring 3, the inner sealing ring 4 and the compensation plate 5 is released, the outer ring 61 is outwards expanded, the compensation plate 5 pushes the inner ring 62 to outwards move, the inner ring 61 is driven to outwards, the inner ring 62 keeps the expanded outer ring 61 to be circular, so that the sealing effect of the outer ring 61 is improved, when the outer ring 61 is completely used, the compensation plate 5 is in a complete release state, the inner ring 62 can be worn in the groove when the piston body 1 moves, so that the abrasion is convenient for users to make the vibration and the user to change.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides a pneumatic cylinder piston seal structure, includes piston body (1) and installs guide ring (2) on piston body (1) lateral wall, its characterized in that: still including setting up foundation ring (3) of guide ring (2) one side, foundation ring (3) are elastic material cross-section circular ring structure, foundation ring (3) clamp is in the recess of piston body (1) surface, the lateral wall cover of foundation ring (3) is equipped with interior sealing ring (4), interior sealing ring (4) are the cross-section and are rectangular ring structure, the lateral wall of interior sealing ring (4) is fixed with a plurality of edges interior sealing ring (4) are compensation plate (5) that annular distributes, compensation plate (5) are elastic material's snakelike sheet structure, and a plurality of compensation plate (5) are kept away from one end of interior sealing ring (4) is fixed with and encircles wearing and tearing sealing ring (6) that compensation plate (5) set up, the lateral wall of wearing and tearing sealing ring (6) exposes outside the recess of piston body (1).
2. The hydraulic cylinder piston seal structure according to claim 1, characterized in that: the wear seal ring (6) is of a double-layer structure, the outer layer of the wear seal ring (6) is an outer ring (61), the outer ring (61) is of a circular ring structure which is made of elastic materials and is rectangular in section, inner pads (62) of a plurality of tile-shaped structures made of plastic materials are fixed on the inner side of the outer ring (61), the inner pads (62) are in one-to-one correspondence with the compensation plates (5), and the compensation plates (5) are fixed on the middle of the inner sides of the inner pads (62).
3. The hydraulic cylinder piston seal arrangement according to claim 2, wherein: the outer side wall edge of the outer ring (61) is of a chamfer structure.
4. The hydraulic cylinder piston seal arrangement according to claim 2, wherein: the compensation plate (5) has an elastic tendency to extend towards both ends.
5. The hydraulic cylinder piston seal arrangement according to claim 2, wherein: when the compensation plate (5) is elastically released, the outer side wall of the inner pad (62) is tangent to the outer side wall of the piston body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320962368.0U CN219827331U (en) | 2023-04-25 | 2023-04-25 | Hydraulic cylinder piston sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320962368.0U CN219827331U (en) | 2023-04-25 | 2023-04-25 | Hydraulic cylinder piston sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827331U true CN219827331U (en) | 2023-10-13 |
Family
ID=88278163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320962368.0U Active CN219827331U (en) | 2023-04-25 | 2023-04-25 | Hydraulic cylinder piston sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827331U (en) |
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2023
- 2023-04-25 CN CN202320962368.0U patent/CN219827331U/en active Active
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