Wear-resistant ring for hydraulic oil cylinder

Abstract

The utility model relates to the technical field of sealing wear-resistant rings, in particular to a wear-resistant ring for a hydraulic oil cylinder, which comprises a piston, two first grooves are arranged on the piston, a wear-resistant ring body is sleeved in the first grooves, a second groove is arranged on the wear-resistant ring body, a hoop is mounted in the second groove, and the wear-resistant ring body is sleeved with a wear-resistant ring. Four bolts are rotationally connected to the hoop, the hoop abuts against the wear-resistant ring body, and the ends of the bolts are in threaded connection with the piston; the hoop is installed in the second groove in the wear-resistant ring, and meanwhile the bolt penetrates through the hoop and the wear-resistant ring body and then is in threaded connection with the piston, so that the hoop abuts against the wear-resistant ring in the direction of the piston, the wear-resistant ring body is installed more stably and firmly, and the situation that the use performance is affected due to rotation generated between the wear-resistant ring and the piston is avoided.

Description

Technical Field

[0001] The utility model relates to a wear-resistant ring, in particular to a wear-resistant ring for a hydraulic oil cylinder, and belongs to the technical field of sealing wear-resistant rings. Background Art

[0002] The wear ring is a key component in the hydraulic cylinder and has an important impact on the performance and service life of the hydraulic cylinder. The hydraulic cylinder wear ring, also known as the hydraulic cylinder piston ring or hydraulic cylinder sealing ring, is an annular part installed on the hydraulic cylinder piston rod or piston flange. Its main function is to reduce the friction between the piston and the cylinder wall, protect the hydraulic cylinder wall from wear, and thus extend the service life of the hydraulic cylinder.

[0003] However, the traditional wear-resistant ring is directly mounted in the groove on the piston without using other components to fix the wear-resistant ring, resulting in unstable installation of the wear-resistant ring. During use, the wear-resistant ring and the piston are prone to rotation, thereby affecting the performance of the wear-resistant ring. Utility Model Content

[0004] The purpose of the present utility model is to provide a wear-resistant ring for a hydraulic cylinder in order to solve the above-mentioned problem. By installing a clamp in the second groove on the wear-resistant ring, and passing a bolt through the clamp and the wear-resistant ring body and then connecting it with the piston thread, the clamp is pressed against the wear-resistant ring in the direction of the piston, thereby making the installation of the wear-resistant ring body more stable and firm, and avoiding rotation between the wear-resistant ring and the piston to affect the performance.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a wear-resistant ring for a hydraulic cylinder, comprising a piston, two first grooves are provided on the piston, a wear-resistant ring body is sleeved in the first groove, a second groove is provided on the wear-resistant ring body, a clamp is installed in the second groove, four bolts are rotatably connected to the clamp, the clamp contacts the wear-resistant ring body, and the ends of the bolts are threadedly connected to the piston.

[0006] Preferably, the cross section of the first groove is a trapezoidal structure, and the cross section of the wear-resistant ring body is a trapezoidal structure.

[0007] Preferably, the contact surface between the second groove and the clamp is an arc surface.

[0008] Preferably, a cutout is provided on the clamp, wherein the two bolts are symmetrically distributed about the middle of the cutout.

[0009] Preferably, four countersunk holes are provided on the clamp, and the bolts are installed in the corresponding countersunk holes on the clamp.

[0010] Preferably, two inclined surfaces are provided at the upper and lower ends of the wear-resistant ring body, and the two inclined surfaces are symmetrically distributed.

[0011] Preferably, a third groove is formed in the middle of the piston, and the two wear-resistant ring bodies are symmetrically distributed about the middle of the third groove.

[0012] The beneficial effects of the utility model are as follows: two first grooves are provided on the piston, a wear-resistant ring body is sleeved in the first grooves, a second groove is provided on the wear-resistant ring body, a clamp is installed in the second groove, four bolts are rotatably connected to the clamp, the clamp contacts the wear-resistant ring body, and the ends of the bolts are threadedly connected to the piston; by installing the clamp in the second groove on the wear-resistant ring and passing the bolts through the clamp and the wear-resistant ring body and then threadedly connected to the piston, the clamp is pressed against the wear-resistant ring in the direction of the piston, thereby making the wear-resistant ring body more stably and firmly installed, and avoiding rotation between the wear-resistant ring and the piston to affect the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the connection structure of the bolt and the clamp of the utility model;

[0015] Figure 3 for Figure 2 The enlarged structural diagram of part A is shown;

[0016] Figure 4 This is a schematic diagram of the connection structure between the wear-resistant ring body and the hoop of the utility model;

[0017] Figure 5 for Figure 4 The enlarged structural diagram of part B is shown.

[0018] In the figure: 1, piston; 2, first groove; 3, wear-resistant ring body; 4, second groove; 5, clamp; 6, bolt; 7, third groove; 8, inclined surface; 9, cutout; 10, countersunk hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5As shown, a wear-resistant ring for a hydraulic cylinder includes a piston 1. Two first grooves 2 are provided on the piston 1. A wear-resistant ring body 3 is sleeved in the first groove 2. A second groove 4 is provided on the wear-resistant ring body 3. A clamp 5 is installed in the second groove 4. Four bolts 6 are rotatably connected to the clamp 5. The clamp 5 contacts the wear-resistant ring body 3. The ends of the bolts 6 are threadedly connected to the piston 1. The cross-section of the first groove 2 is a trapezoidal structure, and the cross-section of the wear-resistant ring body 3 is a trapezoidal structure.

[0021] As a technical optimization solution of the present invention, the contact surface between the second groove 4 and the clamp 5 is an arc surface; the contact surface between the second groove 4 and the clamp 5 is an arc-shaped structure, which increases the contact area between the clamp 5 and the second groove 4, so that the clamp 5 can better fix the wear-resistant ring body 3.

[0022] As a technical optimization solution of the present invention, a cutout 9 is provided on the clamp 5, wherein the two bolts 6 are symmetrically distributed about the middle of the cutout 9, and four countersunk holes 10 are opened on the clamp 5, and the bolts 6 are installed in the corresponding countersunk holes 10 on the clamp 5; the wear-resistant ring body 3 is sleeved in the first groove 2 on the piston 1, and then the two pliers are respectively inserted into the countersunk holes 10 on both sides of the cutout 9 on the clamp 5, and then the clamp 5 is pulled toward both sides of the cutout 9 to expand the cutout 9, and then the clamp 5 is installed in the second groove 4 on the wear-resistant ring body 3, so that the wear-resistant ring body 3 is preliminarily fixed by the clamp 5.

[0023] As a technical optimization solution of the present invention, two inclined surfaces 8 are provided at the upper and lower ends of the wear-resistant ring body 3, and the two inclined surfaces 8 are symmetrically distributed; the inclined surfaces 8 on the wear-resistant ring body 3 have a guiding effect on the wear-resistant ring body 3, which facilitates the installation of the wear-resistant ring body 3 and the installation of the hoop 5.

[0024] As a technical optimization solution of the present invention, a third groove 7 is provided in the middle of the piston 1, and the two wear-resistant ring bodies 3 are symmetrically distributed about the middle of the third groove 7; the setting of the third groove 7 can effectively reduce the dead weight of the piston 1, while saving materials and saving the production cost of the piston 1.

[0025] When the utility model is in use, the wear-resistant ring body 3 is first sleeved in the first groove 2 on the piston 1, and then two pliers are respectively inserted into the countersunk holes 10 on both sides of the notch 9 on the hoop 5, and then the hoop 5 is pulled toward both sides of the notch 9 to expand the notch 9, and then the hoop 5 is installed in the second groove 4 on the wear-resistant ring body 3, so that the wear-resistant ring body 3 is preliminarily fixed by the hoop 5; then the bolts 6 are locked in the four countersunk holes 10 in turn, and the ends of the bolts 6 are threadedly connected to the piston 1, so that the hoop 5 is pressed against the wear-resistant ring body 3 toward the middle of the piston 1, and the wear-resistant ring body 3 is further fixed, so that the wear-resistant ring body 3 can no longer rotate, thereby making the installation of the wear-resistant ring body 3 more stable and firm, making the wear-resistant ring body 3 has better performance in use, avoiding rotation between the wear-resistant ring body 3 and the piston 1 affecting the performance; the contact surface between the second groove 4 and the clamp 5 is an arc-shaped structure, which increases the contact area between the clamp 5 and the second groove 4, so that the clamp 5 has a better fixing effect on the wear-resistant ring body 3; the setting of the countersunk hole 10 enables the bolt 6 to be installed inside the clamp 5, avoiding friction between the bolt 6 and the cylinder wall, thereby affecting the performance of the clamp 5 and the wear-resistant ring body 3; the inclined surface 8 on the wear-resistant ring body 3 has a guiding effect on the wear-resistant ring body 3, which is convenient for the installation of the wear-resistant ring body 3 and the installation of the clamp 5; the setting of the third groove 7 can effectively reduce the dead weight of the piston 1, while saving materials and saving the production cost of the piston 1.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A wear-resistant ring for a hydraulic cylinder, comprising a piston (1), characterized in that: The piston (1) is provided with two first grooves (2), a wear-resistant ring body (3) is sleeved in the first grooves (2), a second groove (4) is provided in the wear-resistant ring body (3), a clamp (5) is installed in the second groove (4), four bolts (6) are rotatably connected to the clamp (5), the clamp (5) contacts the wear-resistant ring body (3), and the ends of the bolts (6) are threadedly connected to the piston (1).

2. A wear-resistant ring for a hydraulic cylinder according to claim 1, characterized in that: The cross section of the first groove (2) is a trapezoidal structure, and the cross section of the wear-resistant ring body (3) is a trapezoidal structure.

3. The wear-resistant ring for a hydraulic cylinder according to claim 1, characterized in that: The contact surface between the second groove (4) and the hoop (5) is an arc surface.

4. The wear-resistant ring for a hydraulic cylinder according to claim 3, characterized in that: A cutout (9) is provided on the hoop (5), wherein the two bolts (6) are symmetrically distributed about the middle of the cutout (9).

5. The wear-resistant ring for a hydraulic cylinder according to claim 4, characterized in that: Four countersunk holes (10) are provided on the clamp (5), and the bolts (6) are installed in the corresponding countersunk holes (10) on the clamp (5).

6. The wear-resistant ring for a hydraulic cylinder according to claim 1, characterized in that: Two inclined surfaces (8) are provided at both the upper and lower ends of the wear-resistant ring body (3), and the two inclined surfaces (8) are symmetrically distributed.

7. The wear-resistant ring for a hydraulic cylinder according to claim 1, characterized in that: A third groove (7) is provided in the middle of the piston (1), and the two wear-resistant ring bodies (3) are symmetrically distributed about the middle of the third groove (7).

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