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CN-224228995-U - Hydraulic cylinder

CN224228995UCN 224228995 UCN224228995 UCN 224228995UCN-224228995-U

Abstract

The utility model discloses a hydraulic cylinder in the technical field of hydraulic pressure, which comprises a cylinder body. The cylinder body is of a hollow circular tube structure, a front end cover and a rear end cover are respectively pressed at the left end and the right end of the cylinder body, and a second steel wire check ring and a first steel wire check ring are respectively clamped between the front end cover and the inner wall of the cylinder body and between the rear end cover and the inner wall of the cylinder body. The rear end cover is installed in the middle of the dish spring guide bar, is equipped with the belleville spring on the dish spring guide bar. The front end cover center has offered the mounting hole, installs the piston in the mounting hole, and piston mid-mounting has movable rod. A first sealing structure is arranged between the piston and the front end cover mounting hole, and a second sealing structure is arranged between the piston and the inner wall of the cylinder body. An oil filling hole is formed in one side of the cylinder body and is communicated with a cavity between the front end cover and the piston. The utility model adopts the connection mode of the cylinder body with the hollow circular tube structure and the steel wire check ring, reduces the manufacturing difficulty and the cost and improves the sealing performance.

Inventors

  • MU LINLIN
  • MU SEN
  • Xu yucai
  • JIANG GUOFU
  • MA DENGKE
  • LIU WEI

Assignees

  • 焦作市虹发制动器有限公司

Dates

Publication Date
20260512
Application Date
20250627

Claims (6)

  1. 1. A hydraulic oil cylinder comprises a cylinder body (6) and is characterized in that the cylinder body (6) is of a hollow circular tube structure, a front end cover (11) and a rear end cover (3) are respectively pressed at the left end and the right end of the cylinder body (6), a second steel wire check ring (12) and a first steel wire check ring (5) are respectively clamped between the front end cover (11) and the inner wall of the rear end cover (3) and the inner wall of the cylinder body (6), a disc spring guide rod (4) is centrally installed on the rear end cover (3), a disc spring (7) is arranged on the disc spring guide rod (4), a mounting hole is formed in the center of the front end cover (11), a piston (8) is installed in the mounting hole, a movable rod (13) is installed in the middle of the piston (8), a first sealing structure is arranged between the piston (8) and the mounting hole of the front end cover (11), a second sealing structure is arranged between the piston (8) and the inner wall of the cylinder body (6), and one side of the cylinder body (6) is provided with an oil hole, and a cavity between the oil hole and the front end cover (11) is communicated with the piston (8).
  2. 2. The hydraulic cylinder as claimed in claim 1, wherein the first sealing structure comprises dust rings (14), a first U-shaped seal (15), a first guide belt (17) and a first Style seal (18) which are arranged at intervals from left to right, and an annular groove matched with each sealing element of the first sealing structure is formed in the inner side of the front end cover (11).
  3. 3. The hydraulic cylinder as claimed in claim 1, wherein the second sealing structure comprises a second Style seal (19), a second guide belt (20) and a second U-shaped seal (21) which are arranged at intervals from left to right, and an annular groove matched with each sealing element of the second sealing structure is formed in the inner wall of the cylinder body (6).
  4. 4. The hydraulic cylinder of claim 1, wherein the side surfaces of the front end cover (11) and the rear end cover (3) are respectively provided with a mounting groove (31), the mouth of the cylinder body (6) is respectively provided with a clamping groove (61) matched with the mounting groove (31), and the mounting groove (31) and the clamping groove (61) on the same side are respectively provided with a second steel wire check ring (12) and a first steel wire check ring (5).
  5. 5. The hydraulic cylinder of claim 1, wherein a rear joint (1) is arranged on the right side of the rear end cover (3), a connecting hole is formed in the rear joint (1), and a self-lubricating shaft sleeve (2) is arranged in the connecting hole.
  6. 6. The hydraulic cylinder according to claim 1, wherein a screw plug (10) is arranged in the oil filling hole, a combined sealing gasket (9) is arranged below the screw plug (10), and an O-shaped ring (16) is arranged between the side surface of the front end cover (11) and the inner wall of the cylinder body (6).

Description

Hydraulic cylinder Technical Field The utility model relates to the technical field of hydraulic pressure, in particular to a hydraulic cylinder. Background Hydraulic rams are a critical component in industrial brakes. At present, the existing hydraulic cylinder for the brake has the problem of unreasonable structural design. For example, the cylinder body is generally in an integrated structure, which makes the processing process complicated and difficult, so that the production and use costs of the brake are significantly increased, and further, the selling price of the product is increased, and the market is lack of enough competitiveness. Disclosure of utility model The utility model mainly aims to provide a hydraulic cylinder which is used for solving the problems in the background art. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: A hydraulic cylinder comprises a cylinder body. The cylinder body is of a hollow circular tube structure, a front end cover and a rear end cover are respectively pressed at the left end and the right end of the cylinder body, and a second steel wire check ring and a first steel wire check ring are respectively clamped between the front end cover and the inner wall of the cylinder body and between the rear end cover and the inner wall of the cylinder body. The rear end cover is installed in the middle of the dish spring guide bar, is equipped with the belleville spring on the dish spring guide bar. The front end cover center has offered the mounting hole, installs the piston in the mounting hole, and piston mid-mounting has movable rod. A first sealing structure is arranged between the piston and the front end cover mounting hole, and a second sealing structure is arranged between the piston and the inner wall of the cylinder body. An oil filling hole is formed in one side of the cylinder body and is communicated with a cavity between the front end cover and the piston. Further, the first sealing structure comprises a dust ring, a first U-shaped seal, a first guide belt and a first Style seal which are arranged at intervals from left to right, and an annular groove matched with each sealing element of the first sealing structure is formed in the inner side of the front end cover. Further, the second sealing structure comprises a second Style seal, a second guide belt and a second U-shaped seal which are arranged at intervals from left to right, and an annular groove matched with each sealing element of the second sealing structure is formed in the inner wall of the cylinder body. Further, the front end cover and the side face of the rear end cover are respectively provided with a mounting groove, the mouth of the cylinder body is respectively provided with a clamping groove matched with the mounting groove, and the mounting groove and the clamping groove on the same side are respectively provided with a second steel wire check ring and a first steel wire check ring. Further, a rear joint is arranged on the right side of the rear end cover, a connecting hole is formed in the rear joint, and a self-lubricating shaft sleeve is arranged in the connecting hole. Further, a screw plug is arranged in the oil filling hole, and a combined sealing gasket is arranged below the screw plug. An O-shaped ring is arranged between the side surface of the front end cover and the inner wall of the cylinder body. The utility model also comprises other components which can enable the hydraulic oil cylinder to be used normally, and the equipment or the components adopt the conventional technical means in the field. In addition, the devices and components not defined in the present utility model are conventional in the art, such as belleville springs and the like. In the implementation process, a proper equipment or component model can be selected according to a specific working scene. The hydraulic cylinder has the working principle that the cylinder body of the hydraulic cylinder adopts a simple hollow circular tube structure, the left end and the right end of the cylinder body are matched with the clamping groove through the mounting groove, and the front end cover and the rear end cover are pressed at the two ends of the cylinder body by means of the first steel wire check ring and the second steel wire check ring, so that the manufacturing difficulty is effectively reduced. When hydraulic oil is injected from the oil injection hole, the piston drives the movable rod to move under the hydraulic action, so that a braking function is realized. Meanwhile, the first sealing structure (comprising a dustproof ring, a first U-shaped seal, a first guide belt and a first Style seal) and the second sealing structure (comprising a second Style seal, a second guide belt and a second U-shaped seal) are matched with each other, so that good tightness of the hydraulic cylinder in the working process is ensured, leakage of hydraulic oil is prevented, and