Sealing connection structure of set screw

Abstract

The utility model discloses a sealing connection structure of a set screw, which comprises a set bolt, a locking nut, a gasket and a connecting part, the connecting part is provided with a connecting hole, the set bolt sequentially penetrates through the locking nut, the gasket and the connecting hole, the upper end face of the gasket is attached to the lower end face of the locking nut, the lower end face of the gasket is attached to the end face of the opening of the connecting hole, and the connecting hole is formed in the connecting part. The set screw body is made of a high-strength alloy material, and the surface of the set screw body is coated with an anti-corrosion coating, so that the set screw can adapt to various severe environments; the combined gasket is integrally formed by adopting a high-temperature-resistant rubber material and an alloy material, and has good sealing performance and anti-aging performance.

Description

Technical Field

[0001] The utility model relates to a sealing connection structure of a set screw. Background Art

[0002] A hydraulic motor is an actuator of a hydraulic system. It converts the liquid pressure energy provided by a hydraulic pump into mechanical energy (torque and speed) of its output shaft. Liquid is a medium for transmitting force and motion. Hydraulic motors, also known as oil motors, are mainly used in injection molding machinery, ships, hoists, engineering machinery, construction machinery, coal mining machinery, mining machinery, metallurgical machinery, shipbuilding machinery, petrochemical industry, port machinery, etc.

[0003] Hydraulic motors require a sealing structure to prevent hydraulic oil leakage. The currently used set screw sealing structure is that the anti-leakage nut and the set screw are directly connected to the connecting piece, and the sealing effect is achieved by squeezing the sealant integrated at the front end of the anti-leakage screw. This sealing method often has problems such as leakage and loosening due to various factors such as the use environment, vibration, and pressure. In addition, this connection method relies on the anti-leakage nut to be tightened once to form a seal; it cannot be disassembled repeatedly, and it is not convenient to adjust the set screw. Utility Model Content

[0004] The purpose of the utility model is to solve the above deficiencies in the prior art and provide a sealing connection structure for a set screw.

[0005] A sealing connection structure for a set screw comprises a set bolt, a locking nut, a gasket and a connecting part. The connecting part is provided with a connecting hole. The set bolt passes through the locking nut, the gasket and the connecting hole in sequence. The upper end face of the gasket is in contact with the lower end face of the locking nut, and the lower end face of the gasket is in contact with the end face at the connecting hole.

[0006] Preferably, the set bolts are made of high-strength alloy material.

[0007] Preferably, the surface of the fastening bolt is coated with an anti-corrosion coating.

[0008] Preferably, the gasket is integrally formed and is made of high temperature resistant rubber material and alloy material.

[0009] Beneficial effects: Compared with the prior art, in the utility model, the set screw body is made of high-strength alloy material, and the surface is sprayed with anti-corrosion coating, so that it can adapt to various harsh environments; the combined gasket is made of high-temperature resistant rubber material and alloy material, and has good sealing performance and anti-aging performance;

[0010] This structure solves the problems of traditional set screw sealing structures that cannot be repeatedly disassembled and have low pressure resistance. The use of high-temperature resistant rubber materials and alloy materials on the combined gasket can increase the pressure resistance of the sealing connection structure to 21Mpa, and the heat resistance can reach 150°C. It achieves high-pressure and high-temperature sealing and repeated disassembly for long-life use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a sealing connection structure of a set screw;

[0012] In the figure, 1. tightening bolt, 2. locking nut, 3. gasket, 4. connecting parts. DETAILED DESCRIPTION

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] like Figure 1 As shown, the fixing bolt 1, the locking nut 2, the gasket 3, and the connecting part 4;

[0015] A sealing connection structure of a set screw comprises a set bolt 1, a locking nut 2, a gasket 3, and a connecting part 4. The connecting part 4 is provided with a connecting hole. The set bolt 1 passes through the locking nut 2, the gasket 3 and the connecting hole in sequence. The upper end surface of the gasket 3 is in contact with the lower end surface of the locking nut 2, and the lower end surface of the gasket 3 is in contact with the end surface at the connecting hole.

[0016] Preferably, the set bolt 1 is made of a high-strength alloy material.

[0017] Preferably, the surface of the set bolt 1 is coated with an anti-corrosion coating.

[0018] Preferably, the gasket 3 is integrally formed and is made of high temperature resistant rubber material and alloy material.

[0019] Instructions for use: Screw the set screw, washer 3, and lock nut 2 together into the connecting part 4; use the set screw and lock nut 2 to press and lock the combined washer 3 onto the surface of the connecting part 4;

[0020] The combined gasket 3 can disperse the pressure between the set screw and the lock nut 2 so that it is evenly distributed on the surface of the connection part, reducing the phenomenon of the threaded screw being broken due to excessive local pressure. In addition, the combined gasket 3 can adapt to the defects of the plane of the connection part 4 through the deformation of the gasket 3, achieving a better fastening effect.

[0021] When subjected to external forces such as vibration and pressure, the locking nut 2 can keep the fastening position of the screw stable and prevent loosening, thereby providing a good sealing effect.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing connection structure of a set screw, characterized in that: It includes a fixing bolt, a locking nut, a gasket, and a connecting part. The connecting part is provided with a connecting hole. The fixing bolt passes through the locking nut, the gasket and the connecting hole in sequence. The upper end surface of the gasket is in contact with the lower end surface of the locking nut, and the lower end surface of the gasket is in contact with the end surface at the connecting hole.

2. A sealing connection structure of a set screw according to claim 1, characterized in that: The set bolts are made of high-strength alloy material.

3. The sealing connection structure of a set screw according to claim 1, characterized in that: The surface of the fastening bolt is coated with an anti-corrosion coating.

4. The sealing connection structure of a set screw according to claim 1, characterized in that: The gasket is integrally formed and is made of high temperature resistant rubber material and alloy material.

Images