Spiral sealing structure

Abstract

The utility model discloses a spiral sealing structure which comprises a speed reducer box body, a roller skating oil cavity is arranged in the speed reducer box body, an input shaft is installed on the speed reducer box body, and the speed reducer box body and the input shaft are sealed through an oil sealing structure. A sealing ring is further arranged between the speed reducer box body and the input shaft for mechanical sealing, and a spiral line structure is installed on the inner circle wall of the sealing ring. According to the utility model, the sealing ring and the oil seal are combined, so that lubricating oil is firmly locked in the box body, the lubricating oil in the box body is thrown back into the box body through the reverse spiral line in the sealing ring, and oil leakage is basically avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer structures, in particular to a spiral sealing structure. Background Art

[0002] The existing reducer input shaft sealing structure generally uses oil seals, because the oil seal itself is a consumable part and has a life cycle. Oil leakage will still occur, it is just a matter of time. There are also practices that will add mechanical structures to the input shaft on the basis of oil seals to ensure the sealing of the input shaft, such as installing simple adjustment gaskets to achieve auxiliary sealing, but the effect is not particularly obvious and needs to be improved. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to provide a spiral sealing structure in order to overcome the deficiencies in the prior art.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a spiral sealing structure, including a reducer housing, a wheel sliding oil cavity is arranged in the reducer housing, an input shaft is installed on the reducer housing, and the reducer housing and the input shaft are sealed by an oil seal structure;

[0005] A sealing ring is provided between the reducer housing and the input shaft for mechanical sealing, and a spiral structure is installed on the inner circular wall of the sealing ring.

[0006] Furthermore, the winding direction of the helical structure of the utility model is opposite to the rotation direction of the input shaft;

[0007] The input shaft of the reducer rotates counterclockwise or clockwise. The spiral line is divided into left-handed and right-handed. Choose the spiral line structure that is opposite to the input shaft's rotation direction for installation. The lubricating oil in the lubricating oil chamber will encounter resistance when passing through the spiral line of the sealing ring, and cannot continue to flow to the oil seal, thus ensuring the reliability of the seal.

[0008] Furthermore, the oil seal structure described in the utility model includes an oil seal and an oil seal cover plate.

[0009] The beneficial effect of the utility model is that the utility model firmly locks the lubricating oil inside the box body in the form of a sealing ring and an oil seal combination, and throws the lubricating oil inside the box body back into the box body through the reverse spiral line inside the sealing ring, and oil leakage basically does not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0012] Figure 2 It is a three-dimensional schematic diagram of the utility model embodying the spiral structure inside the sealing ring.

[0013] Numbers in the figure: 1. Reducer housing, 2. Wheel pulley oil chamber, 3. Input shaft, 4. Sealing ring, 5. Spiral structure, 6. Oil seal, 7. Oil seal cover. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Figure 1 and Figure 2 A spiral sealing structure shown includes a reducer housing 1, a roller sliding oil chamber 2 is arranged inside the reducer housing 1, an input shaft 3 is installed on the reducer housing 1, and the reducer housing 1 and the input shaft 3 are sealed by an oil seal structure; the reducer housing 1 and the input shaft 3 are also mechanically sealed by a sealing ring 4, and a spiral wire structure 5 is arranged on the inner circular wall of the sealing ring 4.

[0016] The winding direction of the helical structure 5 is opposite to the rotation direction of the input shaft 3;

[0017] The reducer input shaft rotates counterclockwise or clockwise, and the spiral line is divided into left-handed and right-handed. Selecting the spiral line structure opposite to the input shaft rotation direction, the lubricating oil in the lubricating oil chamber will encounter resistance through the spiral line of the sealing ring and cannot continue to flow to the oil seal, thus ensuring the reliability of the seal. The oil seal structure includes an oil seal 6 and an oil seal cover plate 7.

[0018] The utility model combines a sealing ring and an oil seal to firmly lock the lubricating oil inside the box body, and throws the lubricating oil inside the box body back into the box body through the reverse spiral line inside the sealing ring.

[0019] Achieve maintenance-free sealing; more reliable sealing; modularization, easy installation; low after-sales cost.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A spiral sealing structure, Features: The invention comprises a reducer housing (1), wherein a wheel sliding oil chamber (2) is arranged in the reducer housing (1), an input shaft (3) is mounted on the reducer housing (1), and an oil seal structure is used to seal the reducer housing (1) and the input shaft (3); A sealing ring (4) is provided between the reducer housing (1) and the input shaft (3) for mechanical sealing, and a spiral structure (5) is installed on the inner circular wall of the sealing ring (4).

2. A spiral sealing structure according to claim 1, Features: The winding direction of the helical structure (5) is opposite to the rotation direction of the input shaft (3).

3. A spiral sealing structure according to claim 1, Features: The oil seal structure comprises an oil seal (6) and an oil seal cover plate (7).

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