Oil seal sealing structure of reduction gearbox framework

Abstract

The utility model relates to the technical field, and discloses an oil seal sealing structure of a reduction gearbox framework, which comprises a box body, a shaft body, a flange pipe and an oil seal framework, and a blank cap flange is fixedly arranged at the bottom of the flange pipe; according to the utility model, the oil seal framework is stably sleeved outside the shaft body in the flange pipe through the reinforcing rib cutting edge on the inner diameter and the reinforcing spring, and the reinforcing rib cutting edge and the reinforcing spring can play a role in compensating the self-tightening force of the oil seal at the joint of the oil seal framework and the shaft body; in this way, part of radial force on the inner diameter of the oil seal framework in the rotating process of the shaft body can be counteracted, so that self-tightening force between the oil seal and the shaft body can be compensated at any time, the inner diameter of the oil seal framework and the shaft body are tightly connected, and oil leakage is reduced; and the blank cap flange is sealed with the bottom of the flange pipe through the sealing ring, so that the problem of oil leakage of the framework oil seal is effectively avoided, lubricant and labor are saved, and the appearance of the bottom of the box body can be kept for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction box oil seals, in particular to an oil seal sealing structure of a reduction box frame. Background Art

[0002] The oil seal of the reduction gearbox is a key component to ensure that the lubricating oil inside the reduction gearbox does not leak out and prevent external pollutants from entering. In industrial applications, the reduction gearbox is an important device connecting the motor and the working machine. Its performance stability and service life largely depend on the quality of the oil seal. The oil seal is usually installed in the transparent cover at the input and output shaft ends of the reduction gearbox. Its main function is to prevent the leakage of lubricating oil and the invasion of external pollutants.

[0003] However, the existing three-in-one travel reducer is located in an open-air environment and below the working area. The mineral powder causes serious corrosion to the hollow shaft and skeleton oil seal. The inertia release of the gantry crane and the continuous free movement of the travel mechanism cause the skeleton oil seal and the shaft to be in a state of friction. This causes axial pressure on the cutting edge of the reducer oil seal, resulting in a gap at the cutting edge of the oil seal, reducing the sealing performance of the oil seal and causing serious oil leakage at the reducer oil seal. For this reason, we have improved the sealing structure of the existing reducer skeleton oil seal. Utility Model Content

[0004] The utility model aims to provide an oil seal sealing structure of a reduction box frame, which can enhance the sealing performance of the oil seal of the reduction box frame, thereby reducing the oil leakage of the reduction box oil seal.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil seal sealing structure of a reduction gearbox skeleton, comprising a box body, a shaft body, a flange tube, and an oil seal skeleton, a cover flange being fixedly installed at the bottom of the flange tube, the oil seal skeleton being fixedly installed in the inner wall of the flange tube, a sealing ring being detachably installed on the circumference of the bottom surface of the flange tube, a reinforcing rib edge being integrally formed on the inner diameter of the oil seal skeleton close to the shaft body, and a reinforcing spring being fixedly installed inside the oil seal skeleton.

[0006] Preferably, a mounting opening is formed between the flange tube and the shaft body, and the oil seal skeleton is located in the inner wall of the mounting opening.

[0007] Preferably, the oil seal skeleton is engaged with the outside of the shaft body through the edge of the reinforcing rib.

[0008] Preferably, bolt holes are provided at equal intervals on the circumference of the bottom of the flange pipe, and a plurality of groups of blind cover flanges are fixedly installed at the bottoms of the corresponding bolt holes by bolts.

[0009] Preferably, a sealing connection groove is provided on the bottom surface of the flange pipe near the edge of the installation opening, and the sealing ring is engaged in the inner wall of the sealing connection groove.

[0010] Preferably, a mounting groove is provided inside the oil seal skeleton, and the reinforcing spring is fixedly installed on the side wall of the mounting groove near the edge of the reinforcing rib.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The oil seal skeleton in the utility model is firmly sleeved on the outside of the shaft body in the flange tube through the reinforcing rib cutting edge and the reinforcing spring on the inner diameter. The reinforcing rib cutting edge and the reinforcing spring can compensate the self-tightening force of the oil seal on the connection between the oil seal skeleton and the shaft body, thereby offsetting a part of the radial force of the shaft body on the inner diameter of the oil seal skeleton during the rotation process, thereby being able to compensate the self-tightening force between the oil seal and the shaft body at any time, so that the inner diameter of the oil seal skeleton and the shaft body are closely connected to reduce oil leakage, and the bottom of the flange tube is installed with a blind cover flange by bolts, and the blind cover flange is sealed with the bottom of the flange tube through a sealing ring, which effectively prevents the problem of oil leakage of the skeleton oil seal, saves lubricant and labor, and can also keep the appearance of the bottom of the box body for a long time, and solves the problem of axial pressure of the shaft body on the oil seal cutting edge of the reduction box, thereby causing a gap at the oil seal cutting edge, reducing the sealing performance of the oil seal, and causing serious oil leakage at the oil seal of the reduction box. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a schematic diagram of the disassembled structure of the oil seal skeleton in the utility model;

[0015] Figure 3 for Figure 1 Schematic diagram of local structure;

[0016] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0017] In the figure: 1. Box body; 2. Flange pipe; 3. Cover flange; 4. Oil seal frame; 5. Sealing ring; 6. Reinforcement spring; 11. Shaft body; 12. Mounting port; 21. Bolt hole; 41. Reinforcement rib edge; 42. Mounting groove; 51. Sealing connection groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figure 1-4The utility model provides a technical solution: an oil seal sealing structure of a reduction box frame, comprising a box body 1, a shaft body 11, a flange pipe 2, an oil seal frame 4, and a cover flange 3 is fixedly installed at the bottom of the flange pipe 2;

[0020] The oil seal skeleton 4 is fixedly installed in the inner wall of the flange tube 2, and a sealing ring 5 is detachably installed on the circumference of the bottom surface of the flange tube 2. A reinforcing rib edge 41 is integrally formed on the inner diameter of the oil seal skeleton 4 near the shaft body 11, and a reinforcing spring 6 is fixedly installed inside the oil seal skeleton 4;

[0021] The oil seal frame 4 is mounted on the shaft body 11 by snapping, and plays a role in sealing the lubricating oil at the shaft body 11;

[0022] The oil seal skeleton 4 is firmly mounted on the outside of the shaft body 11 in the flange tube 2 through the reinforcing rib edge 41 on the inner diameter and the reinforcing spring 6. The reinforcing rib edge 41 and the reinforcing spring 6 can compensate for the self-tightening force of the oil seal at the connection between the oil seal skeleton 4 and the shaft body 11, so as to offset a part of the radial force of the shaft body 11 on the inner diameter of the oil seal skeleton 4 during the rotation process, so as to compensate for the self-tightening force between the oil seal and the shaft body 11 at any time, so that the inner diameter of the oil seal skeleton 4 and the shaft body 11 are closely connected to reduce oil leakage, and the bottom of the flange tube 2 is installed with the blind cover flange 3 by bolts, and the blind cover flange 3 is sealed with the bottom of the flange tube 2 by the sealing ring 5, which effectively prevents the problem of oil leakage of the skeleton oil seal, saves lubricant and labor, and can also keep the appearance of the bottom of the box body 1 for a long time.

[0023] Among them, an installation opening 12 is formed between the flange tube 2 and the shaft body 11, and the oil seal skeleton 4 is located in the inner wall of the installation opening 12. The oil seal skeleton 4 is clamped on the outside of the shaft body 11 through the reinforcing rib edge 41. The oil seal skeleton 4 is firmly mounted on the outside of the shaft body 11 in the flange tube 2 through the reinforcing rib edge 41 on the inner diameter and the reinforcing spring 6.

[0024] Among them, bolt holes 21 are opened at equal intervals on the circumference of the bottom of the flange pipe 2, and multiple groups of blind cover flanges 3 are fixedly installed at the bottom of the corresponding bolt holes 21 by bolts. By installing bolts on the original bolt holes 21 at the bottom of the flange pipe 2, the blind cover flanges 3 are isolated from the harsh environment on site and can also play a sealing role, achieving double insurance.

[0025] Among them, a sealing connection groove 51 is opened at the bottom surface of the flange pipe 2 near the edge of the installation port 12, and the sealing ring 5 is engaged in the inner wall of the sealing connection groove 51. The cover flange 3 is sealed and connected with the sealing ring 5 at the bottom of the flange pipe 2, thereby isolating the flange pipe 2 at the bottom of the box body 1 from the harsh environment on site and playing a sealing role.

[0026] Among them, an installation groove 42 is provided inside the oil seal skeleton 4, and the reinforcing spring 6 is fixedly installed on the side wall of the installation groove 42 near the reinforcing rib edge 41. The reinforcing rib edge 41 and the reinforcing spring 6 can compensate for the self-tightening force of the oil seal at the connection between the oil seal skeleton 4 and the shaft body 11, so as to offset a part of the radial force of the shaft body 11 on the inner diameter of the oil seal skeleton 4 during the rotation process, so as to compensate for the self-tightening force between the oil seal and the shaft body 11 at any time.

[0027] Working principle: When in use, the oil seal skeleton 4 is first firmly mounted on the outside of the shaft body 11 in the flange tube 2 through the inner diameter reinforcing rib edge 41 and the reinforcing spring 6. The reinforcing rib edge 41 and the reinforcing spring 6 can compensate for the self-tightening force of the oil seal at the connection between the oil seal skeleton 4 and the shaft body 11, so as to offset a part of the radial force of the shaft body 11 on the inner diameter of the oil seal skeleton 4 during the rotation process, thereby compensating for the self-tightening force between the oil seal and the shaft body 11 at any time, so that the inner diameter of the oil seal skeleton 4 and the shaft body 11 are closely connected, reducing oil leakage;

[0028] Then, the bottom of the flange pipe 2 is installed with a blind flange 3 by means of bolts. The blind flange 3 is sealed with the bottom of the flange pipe 2 by means of a sealing ring 5, thereby effectively preventing the problem of oil leakage from the skeleton oil seal.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil seal structure of a reduction gearbox frame, comprising a housing (1), a shaft (11), a flange pipe (2), and an oil seal frame (4), characterized in that: A blind flange (3) is fixedly mounted on the bottom of the flange tube (2); the oil seal skeleton (4) is fixedly mounted on the inner wall of the flange tube (2); a sealing ring (5) is detachably mounted on the circumference of the bottom surface of the flange tube (2); a reinforcing rib edge (41) is integrally formed on the inner diameter of the oil seal skeleton (4) on a side close to the shaft body (11); and a reinforcing spring (6) is fixedly mounted inside the oil seal skeleton (4).

2. The oil seal structure of a reduction gearbox frame according to claim 1, characterized in that: A mounting opening (12) is formed between the flange tube (2) and the shaft body (11), and the oil seal skeleton (4) is located in the inner wall of the mounting opening (12).

3. The oil seal structure of a reduction gearbox frame according to claim 1, characterized in that: The oil seal skeleton (4) is engaged with the outside of the shaft body (11) via a reinforcing rib edge (41).

4. The oil seal structure of a reduction gearbox frame according to claim 1, characterized in that: Bolt holes (21) are provided at equal intervals on the circumference of the bottom of the flange pipe (2), and a plurality of groups of blind cover flanges (3) are fixedly mounted on the bottoms of the corresponding bolt holes (21) by means of bolts.

5. The oil seal structure of a reduction gearbox frame according to claim 2, characterized in that: A sealing connection groove (51) is provided on the bottom surface of the flange pipe (2) near the edge of the installation opening (12), and the sealing ring (5) is engaged in the inner wall of the sealing connection groove (51).

6. The oil seal structure of a reduction gearbox frame according to claim 1, characterized in that: The oil seal skeleton (4) is provided with a mounting groove (42) inside, and the reinforcing spring (6) is fixedly mounted on a side wall inside the mounting groove (42) close to the reinforcing rib edge (41).

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