Low-abrasion hydraulic oil cylinder sealing element

Abstract

The utility model discloses a low-abrasion hydraulic oil cylinder sealing element which comprises an upper connecting ring installed at the upper end of the outer side of a sealing element body, a lower connecting ring installed at the lower end of the outer side of the sealing element body, and a connecting block located outside the sealing element body and connected to the lower end of the outer side of the upper connecting ring. The first prefabricated groove is formed in the upper end of the inner wall of the sealing element body, and a second prefabricated groove is formed in the lower end of the inner wall of the sealing element body; and the lower mounting lip is mounted on the outer side of the lower end of the sealing element body. The utility model belongs to the technical field of sealing elements, and aims to solve the problem that in the prior art, when a sealing element is connected with the inner wall of a cylinder body during movement, the resistance is increased, so that the sealing element is worn quickly. The sealing element has the advantages that excessive tight connection between the sealing element body and the piston rod can be relieved, meanwhile, the resistance of connection between the whole sealing element body and the inner wall of a cylinder body during moving is reduced, and therefore the overall abrasion efficiency is doubly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing elements, in particular to a low-wear hydraulic cylinder sealing element. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that performs linear reciprocating motion (or swinging motion). It is basically composed of a cylinder barrel and a cylinder head, a piston rod, a seal, a buffer device, and an exhaust device. The seal is very important for reciprocating sealing devices such as hydraulic cylinders.

[0003] Most seals are installed on the piston rod and are pressed tightly against the inner wall of the cylinder under the squeeze of hydraulic oil. However, the connection between traditional seals and piston rods is too tight, resulting in the hydraulic oil not being able to be retained at the connection. When moving, the resistance when connected to the inner wall of the cylinder increases, causing the seal to wear faster and shortening its service life. Utility Model Content

[0004] To this end, the utility model provides a low-wear hydraulic cylinder seal to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] According to a first aspect of the utility model, a low-wear hydraulic cylinder seal comprises:

[0007] An upper connecting ring is installed on the upper end of the outer side of the seal body, a lower connecting ring is also installed on the lower end of the outer side of the seal body, and the lower end of the upper connecting ring is connected to a connecting block located outside the seal body;

[0008] A first prefabricated groove is provided at the upper end of the inner wall of the seal body, a second prefabricated groove is provided at the lower end of the inner wall of the seal body, and connecting holes are provided at equal angles in the middle of the inner wall of the seal body;

[0009] The lower mounting lip is mounted on the outer side of the lower end of the sealing body.

[0010] Furthermore, the upper connecting ring and the lower connecting ring are arranged in parallel on the outer side of the sealing body, and a mounting ring is integrally arranged on the inner side of the top of the sealing body.

[0011] Furthermore, the first prefabricated groove, the second prefabricated groove and the connecting hole are arranged in a connected manner on the inner wall of the sealing body.

[0012] Furthermore, the lower end of the connecting block is connected to the upper end of the lower connecting ring, and the middle part of the connecting block is concavely arranged.

[0013] Furthermore, the diameter of the upper end of the lower mounting lip is larger than the diameter of the lower end thereof, and a reinforcement ring is connected to the outer end of the lower mounting lip.

[0014] Furthermore, the upper end of the reinforcement ring is connected to the outer side of the lower end of the lower connecting ring.

[0015] The utility model has the following advantages:

[0016] 1. Through the first prefabricated groove and the second prefabricated groove, the first prefabricated groove, the second prefabricated groove and the connecting hole can alleviate the overly tight connection between the seal body and the piston rod without affecting the sealing effect, and can reduce the wear efficiency of the seal body;

[0017] 2. Through the connecting block, the concave structure in the middle of the connecting block can store the hydraulic oil quantitatively, which is convenient for reducing the resistance of the overall connection with the inner wall of the cylinder body during movement, thereby further reducing the overall wear efficiency;

[0018] 3. Through the lower mounting lip, the lower mounting lip can better guide the seal body during installation, so that the whole can be inserted into the cylinder more conveniently and labor-savingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An overall diagram of a low-wear hydraulic cylinder seal provided for some embodiments of the utility model.

[0020] Figure 2 An overall cross-sectional view of the connection between a seal body and a lower mounting lip of a low-wear hydraulic cylinder seal provided in some embodiments of the utility model.

[0021] In the figure: 1. seal body, 2. mounting ring, 3. upper connecting ring, 4. lower connecting ring, 5. connecting block, 6. first prefabricated groove, 7. second prefabricated groove, 8. connecting hole, 9. lower mounting lip, 10. reinforcing ring. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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 creative work are within the scope of protection of the present invention. Example

[0023] like Figure 1 to Figure 2As shown, a low-wear hydraulic cylinder seal in the embodiment of the first aspect of the utility model comprises: an upper connecting ring 3 is installed on the upper end of the outer side of the seal body 1, and a lower connecting ring 4 is also installed on the lower end of the outer side of the seal body 1. A mounting ring 2 is integrated on the inner side of the top of the seal body 1, so that the upper and lower ends of the seal body 1 can be distinguished by the mounting ring 2, and the seal body 1 can be installed on the outer side of the piston rod through the mounting ring 2. At this time, the lower mounting lip 9 is located at the lower end of the outer side of the piston rod;

[0024] The lower mounting lip 9 is mounted on the outer side of the lower end of the seal body 1. The upper end diameter of the lower mounting lip 9 is larger than the lower end diameter thereof. A reinforcement ring 10 is connected to the outer end of the lower mounting lip 9. The reinforcement ring 10 can improve the installation effect of the lower mounting lip 9. The lower mounting lip 9 can guide the seal body 1 better during installation, so that the seal body 1 can be inserted into the cylinder more conveniently and labor-savingly.

[0025] A first prefabricated groove 6 is provided at the upper end of the inner wall of the seal body 1, and a second prefabricated groove 7 is provided at the lower end of the inner wall of the seal body 1, and a connecting hole 8 is provided at an equal angle circumference in the middle of the inner wall of the seal body 1, the first prefabricated groove 6, the second prefabricated groove 7 and the connecting hole 8 are connected on the inner wall of the seal body 1, and the first prefabricated groove 6, the second prefabricated groove 7 and the connecting hole 8 exist at the connection between the seal body 1 and the piston rod, at this time, the first prefabricated groove 6, the second prefabricated groove 7 and the connecting hole 8 can alleviate the overly tight connection between the seal body 1 and the piston rod without affecting the sealing effect, and can reduce the wear efficiency of the seal body 1;

[0026] The lower end of the outer side of the upper connecting ring 3 is connected to a connecting block 5 located outside the sealing body 1. The lower end of the connecting block 5 is connected to the upper end of the lower connecting ring 4, and the middle part of the connecting block 5 is concave. When working, the upper connecting ring 3 and the lower connecting ring 4 are both connected to the inner wall of the cylinder body. At this time, the concave structure of the middle part of the connecting block 5 can store the hydraulic oil quantitatively, which is convenient for reducing the resistance of the overall connection with the inner wall of the cylinder body during movement, thereby further reducing the overall wear efficiency.

Claims

1. A low-wear hydraulic cylinder seal, characterized in that: include: An upper connecting ring (3) is mounted on the upper end of the outer side of the seal body (1); a lower connecting ring (4) is also mounted on the lower end of the outer side of the seal body (1); and the lower end of the outer side of the upper connecting ring (3) is connected to a connecting block (5) located outside the seal body (1); A first prefabricated groove (6) is provided at the upper end of the inner wall of the sealing body (1), a second prefabricated groove (7) is provided at the lower end of the inner wall of the sealing body (1), and connecting holes (8) are provided at equal angles in the middle of the inner wall of the sealing body (1); A lower mounting lip (9) is mounted on the outer side of the lower end of the sealing body (1).

2. A low-wear hydraulic cylinder seal according to claim 1, characterized in that: The upper connecting ring (3) and the lower connecting ring (4) are arranged in parallel on the outside of the sealing body (1), and a mounting ring (2) is integrally arranged on the inside of the top of the sealing body (1).

3. A low-wear hydraulic cylinder seal according to claim 1, characterized in that: The first prefabricated groove (6), the second prefabricated groove (7) and the connecting hole (8) are arranged in a connected manner on the inner wall of the sealing element body (1).

4. A low-wear hydraulic cylinder seal according to claim 1, characterized in that: The lower end of the connecting block (5) is connected to the upper end of the lower connecting ring (4), and the middle part of the connecting block (5) is arranged in a concave manner.

5. A low-wear hydraulic cylinder seal according to claim 1, characterized in that: The diameter of the upper end of the lower mounting lip (9) is greater than the diameter of the lower end thereof, and a reinforcement ring (10) is connected to the outer end of the lower mounting lip (9).

6. A low-wear hydraulic cylinder seal according to claim 5, characterized in that: The upper end of the reinforcement ring (10) is connected to the outer side of the lower end of the lower connection ring (4).

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