CN219691875U - Radial eccentric locking screw anti-loosening structure of oil cylinder piston - Google Patents
Radial eccentric locking screw anti-loosening structure of oil cylinder piston Download PDFInfo
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- CN219691875U CN219691875U CN202320649798.7U CN202320649798U CN219691875U CN 219691875 U CN219691875 U CN 219691875U CN 202320649798 U CN202320649798 U CN 202320649798U CN 219691875 U CN219691875 U CN 219691875U
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- piston
- locking screw
- eccentric
- piston rod
- radial
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- 238000005096 rolling process Methods 0.000 claims abstract description 22
- 239000003292 glue Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
The utility model discloses an anti-loosening structure of a radial eccentric locking screw of an oil cylinder piston, which comprises an oil cylinder, a piston and a piston rod; the piston is connected with the piston rod through right-handed threads, a pair of eccentric threaded holes are formed in the radial non-center position of the piston, a locking screw and a rolling ball are arranged in each eccentric threaded hole, and the locking screw is an inner hexagonal concave end set screw; the locking screw is in threaded fit with the eccentric threaded hole and abuts against the piston rod through the rolling ball, so that anti-loosening treatment between the piston and the piston rod is realized. Through setting up a pair of eccentric screw hole, locking screw and spin, when piston and piston rod atress are uneven to loosen in advance, can produce a reaction force, reaction force can be used in spin and locking screw, breaks up into a radial force and an axial force on the spin, and radial force acts on locking screw and spin radially, further prevents piston and piston rod pine completely, and axial force has increased frictional force, ensures that reliable realization of piston and piston rod, right-hand thread connection is locking.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to an anti-loosening structure of a radial eccentric locking screw of an oil cylinder piston.
Background
The cylinder, i.e. the hydraulic cylinder, mainly reciprocates linearly in the hydraulic system. In the current society, the efficiency requirement of a host computer on hydraulic equipment is higher and higher, and the oil cylinder is used as an executive component of a hydraulic system and is more and more applied to the working conditions of high speed, high pressure, mechanical vibration and uneven stress.
The piston and the piston rod of the oil cylinder are used as important parts for transferring load in the oil cylinder, are fixed through threaded connection and are applied to working conditions of high speed, high pressure, mechanical vibration and uneven stress, once the piston and the piston rod are loosened, the oil cylinder and mechanical equipment are damaged when the piston and the piston rod are light, serious safety accidents are caused, in the existing mechanical design, the anti-loosening measures of the piston and the piston rod mainly comprise friction anti-loosening and mechanical anti-loosening, and although a certain anti-loosening effect can be achieved, certain requirements are met on the skill and manufacturing precision of assembly personnel, and uncontrollable factor influence exists.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the anti-loosening structure of the radial eccentric locking screw of the oil cylinder piston, so that the occurrence of piston loosening is reduced, and the normal operation and the safe and reliable structure of the hydraulic cylinder are ensured.
Therefore, the utility model provides an anti-loosening structure of a radial eccentric locking screw of an oil cylinder piston, which comprises an oil cylinder, a piston and a piston rod; the piston is connected with the piston rod through right-handed threads, a pair of eccentric threaded holes are formed in the radial non-center position of the piston, a locking screw and a rolling ball are assembled in each eccentric threaded hole, and the locking screw is an inner hexagonal concave end set screw; the locking screw is in threaded fit with the eccentric threaded hole, and the piston rod is propped up by the rolling ball, so that anti-loosening treatment between the piston and the piston rod is realized.
Further, the piston rod is provided with a V-shaped ring groove.
Further, the included angle between the two side surfaces in the V-shaped ring groove is 90 degrees.
Further, the two eccentric threaded holes are symmetrically distributed with respect to the center axis of the piston.
Further, the nominal diameters of the locking screw and the eccentric threaded hole are 10mm.
Further, three welding spots are arranged between the outer end surface of the locking screw and the side surface of the piston.
Further, a fastening glue is coated between the locking screw and the eccentric threaded hole.
According to the anti-loosening structure for the radial eccentric locking screw of the oil cylinder piston, the pair of eccentric threaded holes are formed in the piston, the locking screw and the rolling ball are arranged in each eccentric threaded hole, when the piston and the piston rod are subjected to uneven pre-loosening, a reaction force can be generated, the reaction force can act on the rolling ball and the locking screw, the rolling ball is decomposed into a radial force and an axial force, the radial force acts on the locking screw and the rolling ball in the radial direction, the piston and the piston rod are further completely prevented from loosening, the axial force increases friction force, and the reliable anti-loosening of the piston, the piston rod and the right-handed threaded connection is ensured.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic structural view of an anti-loosening structure of a radial eccentric locking screw of an oil cylinder piston;
FIG. 2 is a cross-sectional view A-A of the radial eccentric locking screw anti-loosening structure of the cylinder piston of the present utility model;
FIG. 3 is a partial enlarged view of the B position of the radial eccentric locking screw locking structure of the cylinder piston of the present utility model;
FIG. 4 is a cross-sectional view of the piston in the radial eccentric locking screw anti-loosening structure of the cylinder piston of the present utility model;
description of the reference numerals
1. An oil cylinder; 2. a piston; 3. a piston rod; 4. right-handed threads; 5. a locking screw; 6. a rolling ball; 21. eccentric threaded holes.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 4, the locking structure of the radial eccentric locking screw of the cylinder piston of the present utility model comprises: the oil cylinder 1, the oil cylinder 1 includes piston 2 and piston rod 3, piston 2 passes through right-handed screw 4 with piston rod 3 and is connected, piston 2 radially is equipped with a pair of eccentric screw hole 21, every eccentric screw hole 21 is equipped with locking screw 5 and spin 6, and spin 6 reaches the effect of self-centering, and this kind of locking structure accomplishes oblique symmetry, and the effect can be better.
During the operation of the oil cylinder 1, the connection of the piston 2 and the piston rod 3 through the right-handed thread 4 must ensure reliable locking and must not be released. According to the utility model, an eccentric threaded hole 21 is formed in a position, which is away from the center H of the piston, of the radial non-center position of the piston 2, a locking screw 5 and a rolling ball 6 are assembled in the eccentric threaded hole 21, the locking screw 5 and the rolling ball 6 are positioned between the piston 2 and the piston rod 3, and the nominal diameters of the locking screw 5 and the eccentric threaded hole 21 are 10mm.
The eccentric threaded hole 21, the locking screw 5 and the rolling ball 6 are structured, when the piston 2 and the piston rod 3 are subjected to uneven pre-loosening, a reaction force F can be generated, the reaction force F can act on the rolling ball 6 and the locking screw 5, the rolling ball 6 is decomposed into a radial force F1 and an axial force F2, the radial force F1 acts on the locking screw 5 and the rolling ball 6, the piston 2 and the piston rod 3 are further completely prevented from loosening, the axial force F2 increases friction force, and the reliable connection between the piston 2 and the piston rod 3 and the reliable realization of right-handed thread 4 is ensured to be loose.
Therefore, when the oil cylinder 1 works, the piston 2 is connected with the piston rod 3 and the right-handed threads 4 for loosening due to uneven stress and the like, and the oil cylinder 1 and mechanical equipment are damaged, and the structure has a reliable anti-loosening effect, so that the normal work of the oil cylinder 1 and the mechanical equipment is completely ensured.
In the scheme, a V-shaped ring groove is added on the thread of the piston rod and is matched with the rolling ball 6, and the V-shaped ring groove can also eliminate the displacement caused by the axial size error of the anti-loosening structure; the positioning is more accurate; wherein, the included angle between two side surfaces in the V-shaped ring groove is 90 degrees.
In one embodiment, the screw is coated with fastening glue or three points of mortise on the end face of the screw, so that the reliability is further improved; in addition, the locking screw 5 adopts a hexagon socket end set screw, and the end face of the bottom of the screw is designed into a special structure.
The working principle of the locking structure of the radial eccentric locking screw of the oil cylinder piston is briefly described below with reference to the attached drawings.
The eccentric threaded hole 21, the locking screw 5 and the rolling ball 6 are structured, when the piston 2 and the piston rod 3 are subjected to uneven pre-loosening, a reaction force F can be generated, the reaction force F can act on the rolling ball 6 and the locking screw 5, the rolling ball 6 is decomposed into a radial force F1 and an axial force F2, the radial force F1 acts on the locking screw 5 and the rolling ball 6, the piston 2 and the piston rod 3 are further completely prevented from loosening, the axial force F2 increases friction force, and the reliable connection between the piston 2 and the piston rod 3 and the reliable realization of right-handed thread 4 is ensured to be loose.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. 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 (7)
1. The anti-loosening structure of the radial eccentric locking screw of the oil cylinder piston is characterized by comprising an oil cylinder (1), a piston (2) and a piston rod (3); the piston (2) is connected with the piston rod (3) through a right-handed thread (4),
a pair of eccentric threaded holes (21) are formed in the radial non-center position of the piston (2), a locking screw (5) and a rolling ball (6) are assembled in each eccentric threaded hole (21), and the locking screw (5) is a hexagon socket end set screw; the locking screw (5) is in threaded fit with the eccentric threaded hole (21), and pushes against the piston rod (3) through the rolling ball (6), so that anti-loosening treatment between the piston (2) and the piston rod (3) is achieved.
2. The locking structure of the radial eccentric locking screw of the oil cylinder piston according to claim 1, wherein the piston rod (3) is provided with a V-shaped ring groove.
3. The locking structure of the radial eccentric locking screw of the oil cylinder piston according to claim 2, wherein an included angle between two side surfaces of the V-shaped ring groove is 90 degrees.
4. The cylinder piston radial eccentric locking screw locking structure according to claim 1, wherein two eccentric threaded holes (21) are symmetrically distributed about the central axis of the piston (2).
5. The cylinder piston radial eccentric locking screw locking structure according to claim 1, characterized in that the nominal diameter of the locking screw (5) and the eccentric threaded hole (21) is 10mm.
6. The locking structure of the radial eccentric locking screw of the oil cylinder piston according to claim 1, wherein three welding points are arranged between the outer end surface of the locking screw (5) and the side surface of the piston (2).
7. The cylinder piston radial eccentric locking screw locking structure according to claim 1, wherein a fastening glue is coated between the locking screw (5) and the eccentric threaded hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320649798.7U CN219691875U (en) | 2023-03-28 | 2023-03-28 | Radial eccentric locking screw anti-loosening structure of oil cylinder piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320649798.7U CN219691875U (en) | 2023-03-28 | 2023-03-28 | Radial eccentric locking screw anti-loosening structure of oil cylinder piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219691875U true CN219691875U (en) | 2023-09-15 |
Family
ID=87963325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320649798.7U Active CN219691875U (en) | 2023-03-28 | 2023-03-28 | Radial eccentric locking screw anti-loosening structure of oil cylinder piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219691875U (en) |
-
2023
- 2023-03-28 CN CN202320649798.7U patent/CN219691875U/en active Active
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