CN216714868U - Piston anti-loosening connecting structure - Google Patents
Piston anti-loosening connecting structure Download PDFInfo
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- CN216714868U CN216714868U CN202123103629.3U CN202123103629U CN216714868U CN 216714868 U CN216714868 U CN 216714868U CN 202123103629 U CN202123103629 U CN 202123103629U CN 216714868 U CN216714868 U CN 216714868U
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- piston rod
- loosening
- looseness
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Abstract
The utility model relates to the technical field of hydraulic mechanical parts, in particular to a piston anti-loosening connecting structure, which comprises a piston rod and a piston body, wherein the piston body is connected to the end part of the piston rod in a threaded manner, the end part of the piston rod is provided with an anti-loosening assembly for preventing the piston body from being separated or loosened, the anti-loosening assembly comprises an anti-loosening element and a clamping element for limiting the anti-loosening element, a protection element is sleeved on the piston rod between the anti-loosening element and the clamping element, an anti-loosening groove is formed in the position, matched with the anti-loosening element, on the piston rod, the protection element is sleeved on the piston rod in a sliding manner, a limiting groove is formed in the position, close to the end face of the piston rod, on the piston rod, the clamping element is arranged in an abutting manner, the anti-loosening element on the piston rod prevents the piston from falling off, the protection element limits the anti-loosening element to prevent the anti-loosening element from falling off, the clamping element prevents the protection element from falling off, and the clamping element are sequentially assembled and installed on the piston rod, can effectively ensure the stability of the piston rod when the piston rod reciprocates in the piston cylinder.
Description
Technical Field
The utility model relates to the technical field of hydraulic mechanical parts, in particular to a piston anti-loosening connecting structure.
Background
The piston cylinder is a structural form of a hydraulic cylinder, and a metal machine part for guiding the piston to do linear reciprocating motion in the cylinder comprises a motion execution part piston rod, a piston doing linear motion to do work and a connecting part for supporting the piston to do work.
Current piston and piston rod are installed fixedly with threaded connection's form or welded form mostly, and when the piston had the screw hole through-hole to install on the piston rod, the piston rod was not hard up easily when reciprocating motion was done in the piston cylinder, leads to the piston cylinder can not normally work, and when the piston welded on the piston rod, the structure was firm, but can not dismantle the maintenance.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defects in the prior art, the utility model aims to provide the anti-loosening connecting structure for the piston, the stability among the piston rod, the piston cylinder and the piston during reciprocating motion of the piston rod in the piston cylinder is improved through the clamping key, the outer sleeve and the anti-loosening part, meanwhile, the sealing performance of the structure is ensured, the structure is simple, and the disassembly is convenient.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a piston anti-loosening connection structure, includes piston rod and the piston body of threaded connection in the piston rod tip, its characterized in that, piston rod tip are provided with and prevent that the piston body breaks away from or not hard up locking subassembly, and locking subassembly includes anticreep piece and to the spacing screens piece of anticreep piece, and the cover is equipped with the protection piece on the piston rod between anticreep piece and the screens piece.
Through adopting above-mentioned technical scheme, anticreep piece prevents that the piston from droing on the piston rod, and the protection piece restriction anticreep piece prevents that the anticreep piece from droing, and the screens piece prevents that the protection piece from droing, and anticreep piece, protection piece and screens piece make up in proper order and install on the piston rod, can effectively guarantee the stability of piston rod when carrying out reciprocating motion in the piston cylinder, are difficult to not hard up, and simple structure, make things convenient for the dismouting.
Preferably, the piston rod is provided with at least two anti-falling grooves at the positions matched with the anti-falling pieces, the anti-falling pieces are arranged in the anti-falling grooves, the outer side parts of the anti-falling pieces are exposed out of the piston body, and the parts of the anti-falling pieces exposed out of the piston body are abutted to the end face of the piston body.
Through adopting above-mentioned technical scheme, anticreep piece is provided with a plurality of merges and installs at anticreep inslot, uses simple to operate, has reduced the limitation when installing to anticreep piece butt and piston body terminal surface guarantee the leakproofness and the stability of this structure.
Preferably, the anti-falling grooves are arranged in a circular ring shape, and the end faces of the adjacent anti-falling parts are matched.
Through adopting above-mentioned technical scheme, it is further, make things convenient for anticreep piece to install at anticreep inslot, easy dismounting.
Preferably, the anticreep groove is provided with at least two, and every anticreep inslot all corresponds and is provided with anticreep spare, and the lateral wall of all anticreep spares all is on same torus.
Through adopting above-mentioned technical scheme, it is further, make things convenient for anticreep piece to install in the anticreep inslot to can effectively guarantee that piston body installs leakproofness and stability on the piston rod.
Preferably, the protection member is an annular protection sleeve, the protection sleeve is slidably sleeved on the piston rod, an expanding portion is arranged on the inner annular wall of the protection sleeve close to the anti-falling part, the expanding portion and the inner annular wall of the protection sleeve form a step surface, the expanding portion is sleeved on the anti-falling part, the protection sleeve is not in contact with the piston body, and the step surface abuts against the end face corresponding to the anti-falling part.
Through adopting above-mentioned technical scheme, guarantee leakproofness and stability between lag and the anticreep piece, the lag is used for guaranteeing the firm of anticreep piece, and anticreep piece is not hard up to drop when avoiding the piston rod to carry out reciprocating motion in the piston cylinder, and the lag is damaged with the spare part such as piston in order to avoid equipment work machinery vibration too big to cause with the piston body contactless.
Preferably, the piston rod is provided with a limiting groove at a position close to the end face of the piston rod and on the protection member, the clamping member is a limiting snap ring, the limiting snap ring is clamped in the limiting groove, and the limiting snap ring abuts against the protection member.
Through adopting above-mentioned technical scheme, it is further, guarantee the leakproofness and the stability of this structure, the removal of spacing snap ring restriction lag, lag is not hard up when avoiding the piston rod to carry out reciprocating motion in the piston cylinder and drops.
Preferably, one end of the piston rod, which is used for mounting the piston, is provided with at least two reducing parts, the reducing parts and the outer wall of the piston rod form a step surface, one of the step surfaces is provided with a thread, the inner wall of the piston body is matched with the step surface of the outer wall of the piston rod, and the end surface of the piston body is abutted to the step surface on the piston rod.
By adopting the technical scheme, the piston body is convenient to install and fix on the piston rod, the bending stress of the piston and the piston rod during working can be reduced, and the bending deformation of the piston and the piston rod during working is further reduced.
Preferably, a chamfer surface is arranged at a corner formed between two adjacent diameter reducing parts, and a gap is arranged between the chamfer surface and the inner wall of the piston body.
Through adopting above-mentioned technical scheme, the inner wall of piston body touches with the corner when can effectively avoiding the piston body to install on the piston rod, and is further, is destroyed when avoiding the piston body to install on the piston rod, leads to the circumstances such as oil leak, influences the working property of equipment.
In summary, the present invention has the following technical effects:
the clamping key, the outer sleeve and the anti-falling part increase the stability of the piston rod, the piston cylinder and the piston when the piston rod reciprocates in the piston cylinder, and meanwhile, the sealing performance of the structure is ensured
Drawings
Fig. 1 is a schematic structural view of a piston anti-loose connection structure according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a release preventing member in the piston looseness prevention connection structure according to the embodiment of the utility model.
The reference numerals in the figures illustrate:
1. a piston body; 2. a drop-off prevention member; 3. a piston rod; 4. a limiting groove; 5. a guard; 6. chamfering; 7. and (4) an anti-drop groove.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to FIGS. 1-2.
A piston anti-loosening connecting structure is shown in figure 1 and comprises a piston rod 3 and a piston body 1 installed on the piston rod 3, wherein one end of the piston rod 3, which is used for installing the piston body 1, is provided with two reducing parts which are gradually reduced towards the end part of the piston rod, a corner formed between every two adjacent reducing parts is provided with a chamfer surface 6, a gap exists between the chamfer surface 6 and the inner wall of the piston body 1, the reducing parts and the outer wall of the piston rod 3 form step surfaces, if the number of the reducing parts is two, the step surface facing the end part of the piston rod 3 is provided with threads, the other step surface is provided with a sealing ring, the inner wall of the piston body 1 and the step surface on the outer wall of the piston rod 3 are matched, the end surface of the piston body 1 is abutted against the step surfaces on the piston rod 3, and the purpose here is that the piston body 1 is installed and fixed on the piston rod 3 to avoid the piston body 1 from being damaged when being installed on the piston rod 3, the oil leakage and the like are caused, and the working performance of the equipment is affected, and the number of the diameter reducing parts is three or more, so that the bending stress of the piston and the piston rod 3 during the working is reduced, and the bending deformation of the piston and the piston rod 3 during the working is further reduced.
3 tip of piston rod is provided with prevents that piston body 1 from breaking away from or not hard up locking subassembly, locking subassembly includes anticreep piece 2 and to the spacing screens piece of anticreep piece 2, in this embodiment, the screens piece is the elasticity rand, the cover is equipped with protection piece 5 on the piston rod 3 between anticreep piece 2 and the screens piece, on piston rod 3, anticreep piece 2 is used for preventing that the piston from droing, protection piece 5 is used for preventing that anticreep piece 2 from droing, the screens piece is used for preventing that protection piece 5 from droing, anticreep piece 2, protection piece 5 and screens piece combination attach is in proper order on piston rod 3, can effectively guarantee the stability of piston rod 3 when carrying out reciprocating motion in the piston cylinder, be difficult to not hard up.
As shown in fig. 2, the anti-slip groove 7 is a circular ring, the anti-slip member 2 is provided with at least two anti-slip members 2, the end faces of the adjacent anti-slip members 2 are adapted to each other, if the number of the anti-slip members is two, the end faces of the adjacent anti-slip members 2 can be gear faces which are in planar or concave-convex embedded, or other shapes which can be matched with each other, so as to ensure the stability of the adaptation between the adjacent anti-slip members 2, of course, the number of the anti-slip members 2 is three or more, the end face matching of the adjacent anti-slip members 2 is similar to that of the two anti-slip members 2, so that the anti-slip members 2 can be combined into a circular ring, and the stability is high, here, the purpose is to reduce the limitation in installation, and the use and installation are convenient.
In other embodiments, the anti-slip grooves 7 may not be a continuous annularly-arranged groove, that is, a plurality of anti-slip grooves 7 are circumferentially arranged on the piston rod, and the anti-slip members 2 are matched with the anti-slip grooves 7 in number and position, generally, the number of the anti-slip grooves 7 is at least two, and in this case, the outer side walls of all the anti-slip members 2 are on the same circular ring surface.
In this embodiment, the protection member 5 is an annular protection sleeve, the protection sleeve is slidably sleeved on the piston rod 3, an expanding portion is arranged on an inner annular wall of the protection sleeve close to the anti-drop member 2, the expanding portion and the inner annular wall of the protection sleeve form a step surface, the expanding portion is sleeved on the anti-drop member 2, the protection sleeve is not in contact with the piston body 1, the expansion portion is used for ensuring the stability of the anti-drop member 2, the anti-drop member 2 is limited and fixed, and meanwhile, damage to parts such as the piston and the like caused by too large vibration of a working machine of the device is avoided.
An annular limiting groove 4 for installing a clamping piece is arranged on the piston rod 3 and is positioned at the position, close to the end face of the piston rod 3, of the protection piece 5, and the clamping piece is clamped in the limiting groove 4 and is used for limiting the movement of the protection sleeve.
In order to ensure the stability and the sealing performance of the structure, the outer part of the anti-falling part 2 is exposed out of the piston body 1, the part of the anti-falling part 2 exposed out of the piston body 1 is abutted against the end surface of the piston body 1, the step surface formed by the expanding part and the inner ring wall of the protective sleeve is abutted against the end surface corresponding to the anti-falling part 2, and the limiting snap ring is abutted against the protective piece 5.
The implementation principle of the embodiment of the application is as follows: wherein one end restriction is in the step face department that forms on piston rod 3 on the piston, the other end is carried on spacing fixed by locking subassembly, the maintenance is conveniently dismantled, and stability is high, and is more practical, the other end department anticreep piece 2 of piston prevents that the piston from droing on piston rod 3, protection piece 5 restriction anticreep piece 2 prevents that anticreep piece 2 from droing, the screens piece prevents that protection piece 5 from droing, anticreep piece 2, protection piece 5 and screens piece combination mount are in proper order on piston rod 3, and the butt between the two adjacent spare parts, guarantee the stability and the leakproofness of this structure.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a piston anti-loosening connection structure, includes piston rod (3) and piston body (1) of threaded connection in piston rod (3) tip, its characterized in that, piston rod (3) tip is provided with prevents that piston body (1) break away from or not hard up locking subassembly, and locking subassembly includes anticreep piece (2) and to spacing screens piece of anticreep piece (2), and the cover is equipped with protection piece (5) on piston rod (3) between anticreep piece (2) and the screens piece.
2. The piston looseness-prevention connecting structure according to claim 1, wherein a position, which is matched with the looseness-prevention piece (2), of the piston rod (3) is provided with at least two looseness-prevention grooves (7), the looseness-prevention pieces (2) are arranged in the looseness-prevention grooves (7), the outer side portions of the looseness-prevention pieces (2) are exposed out of the piston body (1), and the portions, which are exposed out of the piston body (1), of the looseness-prevention pieces (2) abut against the end face of the piston body (1).
3. A piston anti-loosening connection according to claim 2, wherein the anti-loosening grooves (7) are arranged in a circular shape, and the end faces of the adjacent anti-loosening elements (2) are matched with each other.
4. A piston anti-loosening connection structure according to claim 2, wherein at least two anti-loosening grooves (7) are provided, each anti-loosening groove (7) is internally provided with an anti-loosening element (2), and the outer side walls of all anti-loosening elements (2) are on the same circular ring surface.
5. A piston anti-loosening connection structure according to claim 2, wherein the protection member (5) is an annular protection sleeve which is slidably fitted over the piston rod (3), the protection sleeve is provided with an expanded diameter portion adjacent to the inner annular wall of the anti-loosening member (2), the expanded diameter portion forms a step surface with the inner annular wall of the protection sleeve, the expanded diameter portion is fitted over the anti-loosening member (2) and the protection sleeve is not in contact with the piston body (1), and the step surface abuts against a corresponding end surface of the anti-loosening member (2).
6. A piston anti-loosening connection structure according to any one of claims 1 to 5, characterized in that the piston rod (3) is provided with a limiting groove (4) at a position of the protection member (5) close to the end face of the piston rod (3), the clamping member is a limiting snap ring, the limiting snap ring is clamped in the limiting groove (4), and the limiting snap ring abuts against the protection member (5).
7. The piston looseness-prevention connecting structure according to claim 1, wherein one end, used for mounting a piston, of the piston rod (3) is provided with at least two reducing portions, the reducing portions and the outer wall of the piston rod (3) form step surfaces, one of the step surfaces is provided with a thread, the inner wall of the piston body (1) is matched with the step surface of the outer wall of the piston rod (3), and the end face of the piston body (1) abuts against the step surface of the piston rod (3).
8. A piston looseness-prevention connecting structure according to claim 7, wherein a chamfered surface (6) is provided at a corner formed between adjacent reduced diameter portions, and a clearance is provided between the chamfered surface (6) and an inner wall of the piston body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123103629.3U CN216714868U (en) | 2021-12-11 | 2021-12-11 | Piston anti-loosening connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123103629.3U CN216714868U (en) | 2021-12-11 | 2021-12-11 | Piston anti-loosening connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216714868U true CN216714868U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123103629.3U Active CN216714868U (en) | 2021-12-11 | 2021-12-11 | Piston anti-loosening connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216714868U (en) |
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2021
- 2021-12-11 CN CN202123103629.3U patent/CN216714868U/en active Active
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