CN217783898U - Tensioning oil cylinder assembly - Google Patents
Tensioning oil cylinder assembly Download PDFInfo
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- CN217783898U CN217783898U CN202221466651.6U CN202221466651U CN217783898U CN 217783898 U CN217783898 U CN 217783898U CN 202221466651 U CN202221466651 U CN 202221466651U CN 217783898 U CN217783898 U CN 217783898U
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- rod body
- rod
- oil cylinder
- wall
- cylinder sleeve
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Abstract
The application relates to a tight device technical field that rises especially relates to a tight cylinder assembly rises: the pull rod comprises a rod cap and a rod piece fixedly arranged on the lower end face of the rod cap, the rod piece is sequentially divided into a rod body A, a rod body B and a rod body C from top to bottom, the diameter of the rod body A is larger than that of the rod body B, and the diameter of the rod body B is larger than that of the rod body C; the rod body A is matched with the inner wall of the oil cylinder sleeve in a clearance structure mode, and a sealing ring is embedded in the inner wall of the oil cylinder at the rod body A; the rod body B is matched with the inner wall of the oil cylinder sleeve in an interference structure mode; through dividing into the syllogic structure with the member, and body of rod diameter reduces gradually, and member A and cylinder liner inner wall clearance fit, so member B and member C can not be ejecting with the sealing washer through passing through sealing washer department smoothly, more can not cause the harm to it to guaranteed the leakproofness, avoided the fluid to leak outward.
Description
The technical field is as follows:
the application relates to the technical field of tensioning devices, in particular to a tensioning oil cylinder assembly.
Background art:
the tensioning oil cylinder assembly is a device which utilizes a hydraulic mechanism to push a tensioning wheel or a tensioning slide rail so as to compensate the elongation of a chain caused by abrasion in use.
The pull rod and the oil cylinder sleeve of the existing tensioning oil cylinder assembly are in interference fit, when the tensioning oil cylinder assembly is installed, the pull rod can eject out a sealing ring which is already embedded in the inner wall of the oil cylinder sleeve, or the sealing ring is damaged, in order to solve the problems, some embedding grooves of the sealing ring are deepened to be processed, but the sealing effect of the sealing ring can be influenced, when the pressure in the oil cylinder is too large, liquid leakage is easy, and the practicability is poor.
The utility model has the following contents:
in order to solve the technical problem, the utility model provides a tight hydro-cylinder assembly rises, the technical problem of solution is: when the pull rod is installed, the sealing ring is damaged, and the sealing effect is affected. In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a tensioning oil cylinder assembly comprises a fork ring, a pull rod, a nut, an oil cylinder sleeve, a plunger shaft, a limiting disc and a spring, wherein the bottom of the pull rod is installed on the fork ring through the nut;
the pull rod comprises a rod cap and a rod piece fixedly arranged on the lower end face of the rod cap, the rod piece is sequentially divided into a rod body A, a rod body B and a rod body C from top to bottom, the diameter of the rod body A is larger than that of the rod body B, and the diameter of the rod body B is larger than that of the rod body C; the rod body A is matched with the inner wall of the oil cylinder sleeve in a clearance structure mode, and a sealing ring is embedded in the inner wall of the oil cylinder at the rod body A; the rod body B is matched with the inner wall of the oil cylinder sleeve in an interference structure mode.
Further, the range of the gap between the rod body A and the inner wall of the oil cylinder sleeve is 0.05 mm-0.1 mm.
Furthermore, the joint of the rod body A and the rod piece B and the joint of the rod body B and the rod piece C are both in a circular truncated cone structure.
Further, a limiting sleeve is arranged between the spring and the rod piece C, and the limiting sleeve is matched with the rod piece C in a clearance structure mode.
Furtherly, the lower part all inlays and is equipped with the dust ring on the inner wall of stop collar, and the dust ring can contradict at body of rod C periphery wall.
The beneficial effects of the utility model are that: the rod piece is divided into a three-section structure, the diameter of the rod body is gradually reduced, and the rod piece A is in clearance fit with the inner wall of the oil cylinder sleeve, so that the rod piece B and the rod piece C can smoothly pass through the sealing ring, the sealing ring can not be ejected out, and the sealing ring can not be damaged, so that the sealing property is ensured, and the oil leakage is avoided; by arranging the circular truncated cone structure, stable transition of different rod pieces is facilitated, and damage to the sealing ring is further avoided; the dustproof ring that the stop collar goes out avoids the small stone to get into between stop collar and the body of rod, and causes stop collar and the wearing and tearing of the body of rod, increases life.
Description of the drawings:
fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is an enlarged schematic view of a shown in fig. 1 according to the present invention.
Fig. 3 is a schematic view of the structure of the pull rod of the present invention.
In the figure:
1. the device comprises a fork ring, 21, a rod cap, 22, a rod piece, 221, rod bodies A,222, rod bodies B,223, rod bodies C,3, a nut, 4, an oil cylinder sleeve, 5, a plunger shaft, 6, a limiting disc, 7, a spring, 8, a sealing ring, 9, a limiting sleeve, 10, a dust ring, 11 and a circular truncated cone structure.
The specific implementation mode is as follows:
for the purpose, technical solution and advantages of the present invention to be more clear, it is now clear to refer to the attached drawings and the following examples to describe the present invention in further detail, so that the public can better master the method of implementing the present invention, the specific embodiments of the present invention are:
a tensioning oil cylinder assembly comprises a fork ring 1, a pull rod, a nut 3, an oil cylinder sleeve 4, a plunger shaft 5, a limiting disc 6 and a spring 7, wherein the bottom of the pull rod is installed on the fork ring 1 through the nut 3, the upper part of the pull rod is embedded in the oil cylinder sleeve 4, the plunger shaft 5 is embedded at one end, far away from the pull rod, of the oil cylinder sleeve 4, the limiting disc 6 is fixedly arranged on the outer vertical surface of the oil cylinder sleeve 4, and the spring 7 is arranged between a connecting disc outside the oil cylinder sleeve 4 and the fork ring 1; the pull rod comprises a rod cap 21 and a rod piece 22 fixedly arranged on the lower end face of the rod cap 21, the rod piece 22 is sequentially divided into a rod body A221, a rod body B222 and a rod body C223 from top to bottom, the diameter of the rod body A221 is larger than that of the rod body B222, and the diameter of the rod body B222 is larger than that of the rod body C223; the rod body A221 is matched with the inner wall of the oil cylinder sleeve 4 in a clearance structure mode, and a sealing ring 8 is embedded in the inner wall of the oil cylinder at the position of the rod body A221; the rod body B222 is matched with the inner wall of the oil cylinder sleeve 4 in an interference structure mode, and a derivation position can be obtained, and an annular groove is formed in the inner wall of the oil cylinder sleeve 4 to meet the requirement that the rod body A221 is in clearance fit with the inner wall of the oil cylinder sleeve 4; through dividing into syllogic structure with member 22, and body of rod diameter reduces gradually, and member A221 and the clearance fit of cylinder liner 4 inner wall, so member B222 and member C223 can not be ejecting with sealing washer 8 through passing through sealing washer 8 department smoothly, more can not cause the harm to it to guaranteed the leakproofness, avoided the fluid to leak outward.
Specifically, the gap between the rod body a221 and the inner wall of the cylinder liner 4 is 0.1 mm, and may be 0.05 mm in other embodiments.
The joint of the rod body A221 and the rod body B222 and the joint of the rod body B222 and the rod piece C223 are both of the circular truncated cone structures 11, when the pull rod is inserted into the oil cylinder sleeve 4, the rod body A221, the rod body B222 and the rod piece C223 can be in smooth transition when passing through the sealing ring 8, and the sealing ring is prevented from being damaged during installation.
A limiting sleeve 9 is arranged between the spring 7 and the rod piece 22C, and the limiting sleeve 9 is matched with the rod piece 22C in a clearance structure mode, so that the spring 7 is prevented from being damaged due to over compression.
The dust ring 10 is embedded in the upper portion and the lower portion of the inner wall of the limiting sleeve 9, the dust ring 10 can be abutted to the outer peripheral wall of the rod body C223, and small stones are prevented from entering the position between the limiting sleeve 9 and the rod body C223, so that the limiting sleeve and the rod body C223 are prevented from being abraded.
In describing the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those 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 scope of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as described herein.
Claims (5)
1. A tensioning oil cylinder assembly comprises a fork ring (1), a pull rod, a nut (3), an oil cylinder sleeve (4), a plunger shaft (5), a limiting disc (6) and a spring (7), wherein the bottom of the pull rod is installed on the fork ring (1) through the nut (3), the upper part of the pull rod is embedded in the oil cylinder sleeve (4), the plunger shaft (5) is embedded at one end, far away from the pull rod, of the oil cylinder sleeve (4), the limiting disc (6) is fixedly arranged on the outer vertical surface of the oil cylinder sleeve (4), and the spring (7) is arranged between a connecting disc outside the oil cylinder sleeve (4) and the fork ring (1); the method is characterized in that:
the pull rod comprises a rod cap (21) and a rod piece (22) fixedly arranged on the lower end face of the rod cap (21), the rod piece (22) is sequentially divided into a rod body A (221), a rod body B (222) and a rod body C (223) from top to bottom, the diameter of the rod body A (221) is larger than that of the rod body B (222), and the diameter of the rod body B (222) is larger than that of the rod body C (223); the rod body A (221) is matched with the inner wall of the oil cylinder sleeve (4) in a clearance structure mode, and a sealing ring (8) is embedded in the inner wall of the oil cylinder at the position of the rod body A (221); the rod body B (222) is matched with the inner wall of the oil cylinder sleeve (4) in an interference structure mode.
2. The tensioning cylinder assembly as claimed in claim 1, wherein: the clearance between the rod body A (221) and the inner wall of the oil cylinder sleeve (4) ranges from 0.05 mm to 0.1 mm.
3. The tensioning cylinder assembly as claimed in claim 1, wherein: the joint of the rod body A (221) and the rod body B (222) and the joint of the rod body B (222) and the rod body C (223) are both of a circular truncated cone structure (11).
4. The tensioning cylinder assembly according to claim 1, wherein: a limiting sleeve (9) is arranged between the spring (7) and the rod body C (223), and the limiting sleeve (9) is matched with the rod body C (223) in a clearance structure mode.
5. The tensioning cylinder assembly as claimed in claim 4, wherein: the upper and lower parts of the inner wall of the limit sleeve (9) are respectively embedded with a dustproof ring (10), and the dustproof ring (10) can be abutted against the outer peripheral wall of the rod body C (223).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466651.6U CN217783898U (en) | 2022-06-13 | 2022-06-13 | Tensioning oil cylinder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221466651.6U CN217783898U (en) | 2022-06-13 | 2022-06-13 | Tensioning oil cylinder assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217783898U true CN217783898U (en) | 2022-11-11 |
Family
ID=83934894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221466651.6U Active CN217783898U (en) | 2022-06-13 | 2022-06-13 | Tensioning oil cylinder assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217783898U (en) |
-
2022
- 2022-06-13 CN CN202221466651.6U patent/CN217783898U/en active Active
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