CN211009370U - Unloading shaft of single-acting piston type oil cylinder - Google Patents
Unloading shaft of single-acting piston type oil cylinder Download PDFInfo
- Publication number
- CN211009370U CN211009370U CN201922177287.6U CN201922177287U CN211009370U CN 211009370 U CN211009370 U CN 211009370U CN 201922177287 U CN201922177287 U CN 201922177287U CN 211009370 U CN211009370 U CN 211009370U
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- Prior art keywords
- unloading shaft
- unloading
- shaft body
- hole
- wall
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- Expired - Fee Related
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- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 42
- 239000007787 solid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses an off-load axle of single-action piston hydro-cylinder belongs to the single-action hydro-cylinder field. An unloading shaft of a single-acting piston type oil cylinder comprises an unloading shaft body, wherein the unloading shaft body is connected to a piston plate in the single-acting oil cylinder in a sliding manner; a through hole is formed in the piston plate, and the unloading shaft body is matched with the through hole; the outer wall of one end of the unloading shaft body is connected with a step conical surface, and one end, far away from the step conical surface, of the unloading shaft body is connected with a fixed shaft; the upper thread of the fixed shaft is connected with a nut, and the outer wall of the fixed shaft is also sleeved with a flat gasket; the outer wall of the unloading shaft body is also sleeved with a compression spring; the utility model discloses installation easy operation, high pressure off-load and elasticity sensitivity of resetting are high, can be accurate reach the function of spacing decompression, effectively protect the safe handling of other annexs such as hydro-cylinder cap, sealing member, under the work of hydro-cylinder pressure steady quality, reliable.
Description
Technical Field
The utility model relates to a single action hydro-cylinder technical field especially relates to an off-load axle of single action piston hydro-cylinder.
Background
At present, single-acting oil cylinder manufacturers in China mostly adopt a solid valve rod or a sealed oil passing hole structure when the stroke of a piston is finished, the solid valve rod structure needs to drill one to two through oil holes on the piston, the processing difficulty is high, and the mechanical performance of the piston is reduced; the sealing piece is damaged easily to the sealing piece oil hole structure, reduces the life of hydro-cylinder.
Disclosure of Invention
The utility model aims at solving the problems existing in the background technology and providing an unloading shaft of a single-action piston type oil cylinder.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an unloading shaft of a single-acting piston type oil cylinder comprises an unloading shaft body, wherein the unloading shaft body is connected to a piston plate in the single-acting oil cylinder in a sliding manner;
a through hole is formed in the piston plate, and the unloading shaft body is matched with the through hole;
the outer wall of one end of the unloading shaft body is connected with a step conical surface, and one end, far away from the step conical surface, of the unloading shaft body is connected with a fixed shaft;
the upper thread of the fixed shaft is connected with a nut, and the outer wall of the fixed shaft is also sleeved with a flat gasket;
and the outer wall of the unloading shaft body is also sleeved with a compression spring.
Preferably, the unloading shaft body is internally provided with a cavity, the unloading shaft body is further provided with a bending section, the bending section is provided with a high-pressure oil inlet hole, the outer wall of the unloading shaft body is further provided with a high-pressure oil outlet hole, and the high-pressure oil inlet hole and the high-pressure oil outlet hole are communicated with the cavity.
Preferably, the inner wall of the cavity is connected with a fixing block.
Preferably, the outer wall of the unloading shaft body is provided with an unloading shaft excircle, the unloading shaft excircle is connected in the through hole in a sliding manner, and a displacement variable is generated in the through hole through clearance sliding.
Preferably, the fixed shaft is provided with external threads, the rest of the nut is in threaded connection with the external threads, and the nut is used for fixing the position of the flat gasket.
Preferably, the piston plate is provided with a concave hole, the compression spring is connected in the concave hole, and one end, far away from the concave hole, of the compression spring is abutted to the outer wall of the flat gasket.
Compared with the prior art, the utility model provides an off-load axle of single-action piston hydro-cylinder possesses following beneficial effect:
1. according to the unloading shaft of the single-action piston type oil cylinder, when the stroke of the oil cylinder is finished, the fixed shaft in the through hole in the piston plate can touch a cylinder cover of the oil cylinder, the excircle of the unloading shaft generates displacement in the through hole, the step conical surface on the unloading shaft body is separated from the through hole in a matched manner, a gap can be generated, high-pressure oil flows through a cavity in the unloading shaft body from a high-pressure oil inlet hole, then flows out from a high-pressure oil outlet hole and returns to an oil tank, so that the limiting and pressure reducing effects are exerted, after pressure reduction, the unloading shaft body can be automatically reset by a compression spring, and is convenient to reuse; the existing oil cylinder with the unloading function of the sealed via hole easily damages a lip of a sealing element to cause failure of the oil cylinder, so that the existing oil cylinder has larger design defects and potential safety hazards, 1-2 inclined holes for returning oil need to be processed at two ends of a through hole in a piston plate by using a solid valve rod for unloading, the processing difficulty is high, the strength of the piston is influenced, and the service life of a product is finally influenced.
The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses installation easy operation, high pressure off-load and elasticity sensitivity of resetting are high, can accurately reach the function of spacing decompression, effectively protect the safe handling of other annexes such as hydro-cylinder cap, sealing member, and hydro-cylinder pressure work down stable in quality, reliable.
Drawings
Fig. 1 is a first schematic structural diagram of a section view of an unloading shaft of a single-acting piston type oil cylinder provided by the utility model;
fig. 2 is a schematic structural diagram of a section of an unloading shaft of a single-acting piston type oil cylinder according to the present invention;
fig. 3 is a schematic structural diagram of the unloading shaft working relationship of the single-acting piston cylinder of the present invention.
In the figure: 1. an unloading shaft body; 101. a curved section; 2. a fixed shaft; 201. an external thread; 3. a cavity; 4. a high pressure oil inlet hole; 5. a high-pressure oil outlet hole; 6. the outer circle of the unloading shaft; 7. a stepped conical surface; 8. a fixed block; 9. a compression spring; 10. a piston plate; 1001. a through hole; 1002. concave holes; 11. a nut; 12. and (7) a flat gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example (b):
referring to fig. 1-3, the unloading shaft of a single-acting piston type oil cylinder comprises an unloading shaft body 1, wherein the unloading shaft body 1 is connected to a piston plate 10 in the single-acting oil cylinder in a sliding manner;
a through hole 1001 is formed in the piston plate 10, and the unloading shaft body 1 is matched with the through hole 1001;
the outer wall of one end of the unloading shaft body 1 is connected with a step conical surface 7, and one end of the unloading shaft body 1, which is far away from the step conical surface 7, is connected with a fixed shaft 2;
the upper thread of the fixed shaft 2 is connected with a nut 11, and the outer wall of the fixed shaft 2 is sleeved with a flat gasket 12;
the outer wall of the unloading shaft body 1 is also sleeved with a compression spring 9.
The unloading shaft is characterized in that a cavity 3 is arranged in the unloading shaft body 1, a bending section 101 is further arranged on the unloading shaft body 1, a high-pressure oil inlet hole 4 is formed in the bending section 101, a high-pressure oil outlet hole 5 is further formed in the outer wall of the unloading shaft body 1, and the high-pressure oil inlet hole 4 and the high-pressure oil outlet hole 5 are both communicated with the cavity 3.
The inner wall of the cavity 3 is connected with a fixed block 8.
The outer wall of the unloading shaft body 1 is provided with an unloading shaft excircle 6, the unloading shaft excircle 6 is connected in the through hole 1001 in a sliding manner, and a displacement variable is generated in the through hole 1001 through clearance sliding.
The fixing shaft 2 is provided with an external thread 201, the nut 11 is in threaded connection with the external thread 201, and the nut 11 is used for fixing the position of the flat gasket 12.
The piston plate 10 is provided with a concave hole 1002, the compression spring 9 is connected in the concave hole 1002, and one end of the compression spring 9, which is far away from the concave hole 1002, is abutted against the outer wall of the flat gasket 12.
In the utility model, the unloading shaft body 1 is provided with a step conical surface 7 which is matched with the through hole 1001 on the piston plate 10 in a sealing way (needing to be researched and prepared); the excircle 6 of the unloading shaft and the through hole 1001 on the piston plate 10 slide in a clearance fit way, and the main function is motion guide; the unloading shaft body 1 is internally provided with a cavity 3, and two ends of the unloading shaft body 1 are respectively communicated with a high-pressure oil inlet 4 and a high-pressure oil outlet 5 to serve as a channel of high-pressure hydraulic oil.
The specific working principle is as follows: when the stroke of the hydraulic cylinder is finished, the fixed shaft 2 in the through hole 1001 in the piston plate 10 touches the cylinder cover of the hydraulic cylinder, the excircle 6 of the unloading shaft generates displacement in the through hole 1001, the step conical surface 7 on the unloading shaft body 1 is separated from the through hole 1001 in a matching way, a gap is generated, high-pressure oil flows through the cavity 3 in the unloading shaft body 1 from the high-pressure oil inlet hole 4 and then flows out from the high-pressure oil outlet hole 5 to return to the oil tank, so that the limiting and pressure reducing effects are exerted, the unloading shaft body 1 can be automatically reset by the compression spring 9 after pressure reduction, the repeated use is convenient, the unloading structure of the unloading shaft body 1 is simple, the installation and operation are convenient, the unloading is sensitive and safe, the service life is long, and the; the existing oil cylinder with the unloading function of the sealed via hole easily damages a lip of a sealing element to cause failure of the oil cylinder, and has larger design defects and potential safety hazards, and the unloading function of the solid valve rod needs to process 1-2 oil return inclined holes at two ends of a through hole 1001 in a piston plate 10, so that the processing difficulty is high, the strength of the piston is influenced, and the service life of a product is finally influenced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The unloading shaft of the single-acting piston type oil cylinder comprises an unloading shaft body (1), and is characterized in that the unloading shaft body (1) is connected to a piston plate (10) in the single-acting oil cylinder in a sliding manner;
a through hole (1001) is formed in the piston plate (10), and the unloading shaft body (1) is matched with the through hole (1001);
the outer wall of one end of the unloading shaft body (1) is connected with a step conical surface (7), and one end, far away from the step conical surface (7), of the unloading shaft body (1) is connected with a fixed shaft (2);
the upper thread of the fixed shaft (2) is connected with a nut (11), and the outer wall of the fixed shaft (2) is sleeved with a flat gasket (12);
the outer wall of the unloading shaft body (1) is further sleeved with a compression spring (9).
2. An unloading shaft of a single-acting piston type oil cylinder according to claim 1, characterized in that a cavity (3) is arranged in the unloading shaft body (1), a bending section (101) is further arranged on the unloading shaft body (1), a high-pressure oil inlet (4) is arranged on the bending section (101), a high-pressure oil outlet (5) is further arranged on the outer wall of the unloading shaft body (1), and both the high-pressure oil inlet (4) and the high-pressure oil outlet (5) are communicated with the cavity (3).
3. An unloading shaft for a single-acting piston cylinder according to claim 2, characterised in that the inner wall of the cavity (3) is connected with a fixing block (8).
4. An unloading shaft of a single-acting piston type oil cylinder according to claim 1, characterized in that the outer wall of the unloading shaft body (1) is provided with an unloading shaft outer circle (6), the unloading shaft outer circle (6) is connected in the through hole (1001) in a sliding manner, and displacement variables are generated in the through hole (1001) through clearance sliding.
5. An unloading shaft for a single-acting piston cylinder according to claim 1, characterized in that the fixed shaft (2) is provided with an external thread (201), the nut (11) is in threaded connection with the external thread (201), and the nut (11) is used for fixing the position of the flat gasket (12).
6. An unloading shaft of a single-acting piston type oil cylinder according to claim 5, characterized in that the piston plate (10) is provided with a concave hole (1002), the compression spring (9) is connected in the concave hole (1002), and one end of the compression spring (9) far away from the concave hole (1002) is abutted against the outer wall of the flat gasket (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177287.6U CN211009370U (en) | 2019-12-09 | 2019-12-09 | Unloading shaft of single-acting piston type oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177287.6U CN211009370U (en) | 2019-12-09 | 2019-12-09 | Unloading shaft of single-acting piston type oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009370U true CN211009370U (en) | 2020-07-14 |
Family
ID=71506365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922177287.6U Expired - Fee Related CN211009370U (en) | 2019-12-09 | 2019-12-09 | Unloading shaft of single-acting piston type oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211009370U (en) |
-
2019
- 2019-12-09 CN CN201922177287.6U patent/CN211009370U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |