Novel waterproof structure of main shaft of gear transmission box

Abstract

The utility model discloses a novel gear transmission case main shaft waterproof structure, including main shaft box body and main shaft, the main shaft includes the axle sleeve and the axle core, be provided with the bearing seat in the main shaft box body, deep groove ball bearing is installed in the bearing seat, be provided with the labyrinth waterproof structure between the main shaft and main shaft box body and bearing seat, the labyrinth waterproof structure includes the labyrinth waterproof cover, the labyrinth waterproof cover is fixedly connected with the bearing seat. Through design labyrinth waterproof structure, the cooperation and the combination of combining multiple sealing rings, can effectively prevent the invasion of moisture and dirt, significantly improve the waterproof effect of main shaft, ensure its normal operation under the harsh environment.

Description

Technical Field

[0001] This utility model relates to a novel waterproof structure for the main shaft of a gearbox, belonging to the field of gearbox technology. Background Technology

[0002] In modern mechanical transmission systems, gearboxes are critical components whose performance directly impacts the overall efficiency and reliability of the machine. The spindle, as the core component of the gearbox, is crucial for its operational stability and durability. However, during operation, the spindle often faces the intrusion of moisture and contaminants from the environment, causing problems such as lubricant emulsification, bearing damage, and corrosion, ultimately leading to gearbox failure. Therefore, designing an effective waterproof structure can effectively prevent the intrusion of moisture and contaminants, extend the service life of the spindle and its related components, and improve the overall performance of the gearbox.

[0003] Existing waterproofing structures typically employ simple sealing rings or gaskets, which, while providing some degree of waterproofing, generally suffer from insufficient sealing performance, poor durability, and maintenance difficulties. Furthermore, as the operating environments of gearboxes become increasingly harsh, the shortcomings of traditional waterproofing structures become more apparent. Therefore, there is an urgent need for a new type of spindle waterproofing structure that can provide superior waterproofing performance. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a novel waterproof structure for the main shaft of a gearbox, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a novel waterproof structure for the main shaft of a gearbox, comprising a main shaft housing and a main shaft; the main shaft includes a bushing and a shaft core; a bearing housing is provided inside the main shaft housing; a deep groove ball bearing is installed inside the bearing housing; a labyrinth waterproof structure is provided between the main shaft, the main shaft housing, and the bearing housing; the labyrinth waterproof structure includes a labyrinth waterproof cover; the labyrinth waterproof cover is fixedly connected to the bearing housing.

[0006] Furthermore, the bushing is provided with a slot for one part of the labyrinth waterproof cover to be inserted and fixed.

[0007] Furthermore, an annular sealing groove is provided on the inner side of the bushing near the upper end of the slot, and an O-ring seal is placed in the annular sealing groove.

[0008] Furthermore, the labyrinth waterproof cover includes a waterproof cover body, a first bent-extension waterproof part, and a second bent-extension waterproof part; the waterproof cover body is provided with mounting holes, which are fixedly connected to the bearing seat by screws passing through the mounting holes; the first bent-extension waterproof part extends vertically into the bushing groove; the second bent-extension waterproof part extends downward into the space between the bearing seat and the shaft core.

[0009] Furthermore, an annular sealing groove 2 is provided on the inner side of the bearing housing, and an O-ring 2 is placed in the annular sealing groove 2. The O-ring 2 is used for sealing, waterproofing and preventing dirt between the bearing housing and the labyrinth waterproof cover.

[0010] Furthermore, an annular sealing groove is provided on the outer side of the bearing housing, and an O-ring seal is placed in the annular sealing groove. The O-ring seal is used for sealing, waterproofing and anti-fouling between the bearing housing and the spindle housing.

[0011] Furthermore, the bearing housing is also provided with mounting holes, which are then fixedly connected to the spindle housing by screws passing through the mounting holes.

[0012] The beneficial effects of this utility model are:

[0013] 1. Excellent waterproof performance: By designing a labyrinth waterproof structure and combining multiple sealing rings, it can effectively prevent the intrusion of water and dirt, significantly improve the waterproof effect of the spindle, and ensure its normal operation in harsh environments.

[0014] 2. Strong structural stability: The tight connection between the spindle and the spindle housing and bearing seat, combined with the fixation of the labyrinth waterproof cover, enhances the overall structural stability and reduces sealing failure caused by vibration or impact.

[0015] 3. Easy maintenance: The waterproof structure design makes each sealing component easy to disassemble and replace, reducing maintenance costs and improving ease of use.

[0016] 4. Extended service life: Through effective waterproof and anti-fouling design, the risk of lubricating oil contamination is significantly reduced, wear on the spindle and bearings is reduced, and the service life of the gearbox is extended.

[0017] 5. High adaptability: This waterproof structure can be widely used in various types of gearboxes to meet the waterproof requirements under different working conditions, thus improving the flexibility of its application range. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged schematic diagram of the maze structure of this utility model.

[0020] In the diagram: 1. Spindle housing; 2. Spindle; 21. Bushing; 211. Slot; 212. Annular sealing groove one; 213. O-ring one; 22. Shaft core; 3. Bearing housing; 31. Annular sealing groove two; 32. O-ring two; 33. Annular sealing groove three; 34. O-ring three; 4. Deep groove ball bearing; 5. Labyrinth waterproof cover; 51. Waterproof cover body; 52. Bent and extended waterproof part one; 53. Bent and extended waterproof part two; 6. Screw. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0023] like Figure 1 and Figure 2 As shown, a novel waterproof structure for the main shaft of a gearbox includes a main shaft housing 1 and a main shaft 2; the main shaft 2 includes a bushing 21 and a shaft core 22; a bearing seat 3 is provided inside the main shaft housing 1; a deep groove ball bearing 4 is installed inside the bearing seat 3; a labyrinth waterproof structure is provided between the main shaft 2, the main shaft housing 1, and the bearing seat 3; the labyrinth waterproof structure includes a labyrinth waterproof cover 5; the labyrinth waterproof cover 5 is fixedly connected to the bearing seat 3.

[0024] In this preferred embodiment, the bushing 21 is provided with a slot 211, which is used for the labyrinth waterproof cover 5 to be inserted and fixed.

[0025] In this preferred embodiment, an annular sealing groove 212 is provided on the inner side of the bushing 21 near the upper end of the slot 211, and an O-ring 213 is placed in the annular sealing groove 212.

[0026] In this preferred embodiment, the maze waterproof cover 5 includes a waterproof cover body 51, a first bent-extension waterproof part 52, and a second bent-extension waterproof part 53. The waterproof cover body 51 is provided with mounting holes, which are fixedly connected to the bearing seat 3 by screws 6 passing through the mounting holes. The first bent-extension waterproof part 52 extends vertically into the groove of the bushing 21. The second bent-extension waterproof part 53 extends downward into the space between the bearing seat 3 and the shaft core 22.

[0027] In this preferred embodiment, an annular sealing groove 31 is provided on the inner side of the bearing housing 3, and an O-ring 32 is placed in the annular sealing groove 31. The O-ring 32 is used for sealing, waterproofing and preventing dirt between the bearing housing 3 and the labyrinth waterproof cover 5.

[0028] In this preferred embodiment, an annular sealing groove 33 is provided on the outer side of the bearing housing 31, and an O-ring 34 is placed in the annular sealing groove 31. The O-ring 34 is used for sealing, waterproofing and anti-fouling between the bearing housing 3 and the spindle housing 1.

[0029] In this preferred embodiment, the bearing housing 3 is also provided with mounting holes, through which screws 6 pass and are fixedly connected to the spindle housing 1.

[0030] This invention, through the design of a labyrinth waterproof structure and the combination of multiple sealing rings, can effectively prevent the intrusion of moisture and dirt, significantly improve the waterproof effect of the spindle, and ensure its normal operation in harsh environments.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel waterproof structure for the main shaft of a gearbox, characterized in that, It includes a spindle housing (1) and a spindle (2); the spindle (2) includes a bushing (21) and a core (22); a bearing seat (3) is provided inside the spindle housing (1); a deep groove ball bearing (4) is installed inside the bearing seat (3); a labyrinth waterproof structure is provided between the spindle (2), the spindle housing (1) and the bearing seat (3); the labyrinth waterproof structure includes a labyrinth waterproof cover (5); the labyrinth waterproof cover (5) is fixedly connected to the bearing seat (3).

2. The novel waterproof structure for the main shaft of a gearbox according to claim 1, characterized in that, The bushing (21) is provided with a slot (211) for the labyrinth waterproof cover (5) to be inserted and fixed.

3. The novel waterproof structure for the main shaft of a gearbox according to claim 2, characterized in that, The inner side of the bushing (21) at the upper end of the slot (211) is provided with an annular sealing groove (212), and an O-ring (213) is placed in the annular sealing groove (212).

4. The novel waterproof structure for the main shaft of a gearbox according to claim 1, characterized in that, The labyrinth waterproof cover (5) includes a waterproof cover body (51), a first bent extension waterproof part (52), and a second bent extension waterproof part (53). The waterproof cover body (51) is provided with mounting holes, which are fixedly connected to the bearing seat (3) by screws (6) passing through the mounting holes. The first bent extension waterproof part (52) extends vertically into the groove of the bushing (21). The second bent extension waterproof part (53) extends downward into the space between the bearing seat (3) and the shaft core (22).

5. The novel waterproof structure for the main shaft of a gearbox according to claim 1, characterized in that, The bearing housing (3) has an annular sealing groove (31) on its inner side. An O-ring (32) is placed in the annular sealing groove (31). The O-ring (32) is used for sealing, waterproofing and preventing contamination between the bearing housing (3) and the labyrinth waterproof cover (5).

6. The novel waterproof structure for the main shaft of a gearbox according to claim 1, characterized in that, The outer side of the bearing housing (3) is provided with an annular sealing groove three (33), and an O-ring three (34) is placed in the annular sealing groove three (33). The O-ring three (34) is used for sealing, waterproofing and anti-fouling between the bearing housing (3) and the spindle box (1).

7. The novel waterproof structure for the main shaft of a gearbox according to claim 1, characterized in that, The bearing housing (3) is also provided with mounting holes, which are fixedly connected to the spindle housing (1) by screws (6) passing through the mounting holes.

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