A high-speed gearbox shaft end sealing structure

Abstract

The utility model relates to the technical field of high-speed shaft sealing, and discloses a high-speed gearbox shaft end sealing structure, including an end cover and a connecting groove, wherein the connecting groove is horizontally penetrated and opened in the middle of the end cover, and the connecting groove is circular, and also includes an adjustment groove and a rubber ring. The utility model combines the connecting groove, the adjustment groove, the rubber ring and the spring. When the shaft end of the high-speed gearbox passes through the connecting groove of the end cover, the rubber ring is sleeved on the outer side of the shaft end. Through the elastic force of multiple groups of springs, the rubber ring can be pushed to shrink inward, so that the inner side of the rubber ring fits with the outer side of the shaft end. At the same time, the inner wall of one side of the rubber ring can be pressed against the inner wall of the adjusting groove for sealing. When the shaft end jumps, the rubber ring can be pushed to expand outward. At this time, the inner wall of the other side of the rubber ring can be pressed against the inner wall of the connecting groove, thereby solving the problem that the existing high-speed gearbox shaft end sealing ring is prone to gaps during deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of high-speed shaft sealing, in particular to a shaft end sealing structure of a high-speed gear box. Background Art

[0002] An air compressor is a device used to compress gas. The structure of an air compressor is similar to that of a water pump. Most air compressors are reciprocating piston type, with rotating blades or rotating screws. The gearbox of the air compressor is an important part of it, which is related to whether the air compressor can operate normally.

[0003] After searching, the publication number is CN219198075U, which discloses a shaft end sealing structure of a high-speed gearbox of an air compressor, including a gearbox body, in which a gear shaft is rotatably connected, and the gear shaft and the gearbox body are rotatably connected via a bearing. A sealing cover is provided at one end of the gear shaft, and the sealing cover is fixedly connected to one side of the gearbox body by a bolt, and the sealing cover is annularly sleeved on the gear shaft.

[0004] In the process of realizing the utility model, the inventors found that there are at least the following problems in the prior art that have not been solved: since the elastic sealing ring is elastic, when the gear shaft undergoes radial jump during startup, etc., the deformation of the elastic sealing ring can compensate for the gap caused by the gear shaft jump. However, the elastic sealing ring has a single structure and is in the shape of a circular ring. During the rapid and repeated jumping of the gear shaft, gaps will still be generated.

[0005] Therefore, we propose a high-speed gearbox shaft end sealing structure that can solve the above problems. Utility Model Content

[0006] The utility model aims to provide a high-speed gearbox shaft end sealing structure, which solves the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed gearbox shaft end sealing structure, including an end cover and a connecting groove, the connecting groove horizontally penetrates and is opened in the middle of the end cover, the connecting groove is circular, and also includes an adjustment groove and a rubber ring, the adjustment groove is annular and is opened in the middle of the inner wall of the connecting groove, the adjustment groove is slidingly connected to the outer side of the rubber ring, and the rubber ring matches the size of the adjustment groove; an adjustment mechanism: installed in the adjustment groove, used to adjust the rubber ring, the adjustment mechanism includes springs, the number of the springs is multiple groups, and the multiple groups of springs are evenly distributed inside the adjustment groove.

[0008] As an optional solution of the technical solution of the present application, two ends of the spring respectively abut against the outer side of the rubber ring and the inner wall of the adjustment groove, and the cross-section of the rubber ring is I-shaped.

[0009] As an optional solution of the technical solution of the present application, a limiting groove is provided on a side of the rubber ring close to the spring, and a limiting rod is fixedly installed on the inner wall of the adjustment groove.

[0010] As an optional solution of the technical solution of the present application, the limiting rod is slidably connected to the limiting groove, and the spring sleeve is arranged on the outside of the limiting rod.

[0011] As an optional solution of the technical solution of the present application, the end cover is in the shape of a boss, and fixing holes are horizontally penetrated through the upper end, the lower end, the front end and the rear end of one side of the end cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the combination of the connecting groove, the adjusting groove, the rubber ring and the spring, when the shaft end of the high-speed gear box passes through the connecting groove of the end cover, the rubber ring is sleeved on the outside of the shaft end, and the elastic force of multiple groups of springs can push the rubber ring to shrink inward, so that the inner side of the rubber ring fits with the outer side of the shaft end. At the same time, the inner wall of one side of the rubber ring can be pressed against the inner wall of the adjusting groove for sealing. When the shaft end bounces, the rubber ring can be pushed to expand outward. At this time, the inner wall of the other side of the rubber ring can be pressed against the inner wall of the connecting groove, thereby solving the problem that the existing high-speed gear box shaft end sealing ring is prone to gaps during deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a front view of a shaft end sealing structure of a high-speed gearbox of the utility model;

[0015] Figure 2 The utility model is a cross-sectional view of a rubber ring of a shaft end sealing structure of a high-speed gearbox.

[0016] In the figure: 1, end cover; 11, connecting groove; 12, adjusting groove; 13, rubber ring; 2, spring; 21, limiting groove; 22, limiting rod; 23, fixing hole. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 2The utility model provides a technical solution: a high-speed gearbox shaft end sealing structure, including an end cover 1 and a connecting groove 11, the connecting groove 11 is horizontally penetrated and opened in the middle of the end cover 1, the connecting groove 11 is circular, and also includes an adjusting groove 12 and a rubber ring 13, the adjusting groove 12 is annular and opened in the middle of the inner wall of the connecting groove 11, the adjusting groove 12 is slidably connected to the outer side of the rubber ring 13, and the rubber ring 13 matches the size of the adjusting groove 12; an adjusting mechanism: installed in the adjusting groove 12, used to adjust the rubber ring 13, the adjusting mechanism includes a spring 2, the number of the springs 2 is a plurality of groups, and the plurality of groups of the springs 2 are evenly distributed inside the adjusting groove 12.

[0018] In this technical solution, when the shaft end of the high-speed gearbox passes through the connecting groove 11 of the end cover 1, the rubber ring 13 is sleeved on the outer side of the shaft end. The elastic force of the multiple sets of springs 2 can push the rubber ring 13 to shrink inward, so that the inner side of the rubber ring 13 fits the outer side of the shaft end. At the same time, the inner wall of one side of the rubber ring 13 can be pressed against the inner wall of the adjustment groove 12 for sealing. When the shaft end bounces, the rubber ring 13 can be pushed to expand outward. At this time, the inner wall of the other side of the rubber ring 13 can be pressed against the inner wall of the connecting groove 11, thereby solving the problem that the existing high-speed gearbox shaft end sealing ring is prone to gaps during deformation.

[0019] In this embodiment, two ends of the spring 2 respectively contact the outer side of the rubber ring 13 and the inner wall of the adjustment groove 12 , and the cross section of the rubber ring 13 is in an I-shape.

[0020] In this technical solution, the cross section of the rubber ring 13 is in an I-shape, so that it can be fixed in the connecting groove 11 to prevent it from falling off during use.

[0021] In this embodiment, a limiting groove 21 is provided on one side of the rubber ring 13 close to the spring 2, a limiting rod 22 is fixedly installed on the inner wall of the adjustment groove 12, the limiting rod 22 is slidably connected to the limiting groove 21, the spring 2 is sleeved on the outside of the limiting rod 22, the end cover 1 is in a boss shape, and fixing holes 23 are horizontally penetrated at the upper end, the lower end, the front end and the rear end of one side of the end cover 1.

[0022] In this technical solution, the limiting rod 22 is slidably connected to the limiting groove 21, so that the stability of the rubber ring 13 can be improved. At the same time, the limiting rod 22 can limit the spring 2 to prevent the spring 2 from shaking and tilting during compression and extension, which affects the use effect.

[0023] When a high-speed gearbox shaft end sealing structure is used, the end cover 1 is fixed to one side of the high-speed gearbox by passing the fixing hole 23 through the bolt, so that the shaft end of the high-speed gearbox passes through the connecting groove 11 of the end cover 1. At this time, the rubber ring 13 is sleeved on the outer side of the shaft end. The elastic force of multiple groups of springs 2 can push the rubber ring 13 to shrink inward, so that the inner side of the rubber ring 13 fits the outer side of the shaft end. At the same time, the inner wall of one side of the rubber ring 13 can be pressed against the inner wall of the adjusting groove 12 for sealing. When the shaft end jumps, the rubber ring 13 can be pushed to expand outward. At this time, the inner wall of the other side of the rubber ring 13 can be pressed against the inner wall of the connecting groove 11, thereby solving the problem that the existing high-speed gearbox shaft end sealing ring is prone to gaps during deformation.

Claims

1. A high-speed gearbox shaft end sealing structure, comprising an end cover (1) and a connecting groove (11), wherein the connecting groove (11) is horizontally penetrated and opened in the middle of the end cover (1), and the connecting groove (11) is circular, characterized in that: It also comprises an adjusting groove (12) and a rubber ring (13), wherein the adjusting groove (12) is annularly arranged in the middle of the inner wall of the connecting groove (11), the adjusting groove (12) is slidably connected to the outer side of the rubber ring (13), and the size of the rubber ring (13) matches that of the adjusting groove (12); An adjustment mechanism is installed in the adjustment groove (12) and is used to adjust the rubber ring (13). The adjustment mechanism comprises springs (2). The number of the springs (2) is multiple groups, and the multiple groups of springs (2) are evenly distributed inside the adjustment groove (12).

2. A high-speed gearbox shaft end sealing structure according to claim 1, characterized in that: The two ends of the spring (2) respectively contact the outside of the rubber ring (13) and the inner wall of the adjustment groove (12); the cross section of the rubber ring (13) is in an I-shape.

3. The high-speed gearbox shaft end sealing structure according to claim 1 is characterized in that: A limiting groove (21) is provided on one side of the rubber ring (13) close to the spring (2), and a limiting rod (22) is fixedly mounted on the inner wall of the adjustment groove (12).

4. A high-speed gearbox shaft end sealing structure according to claim 3, characterized in that: The limiting rod (22) is slidably connected to the limiting groove (21), and the spring (2) is sleeved on the outside of the limiting rod (22).

5. The high-speed gearbox shaft end sealing structure according to claim 1, characterized in that: The end cover (1) is in the shape of a boss, and fixing holes (23) are horizontally penetrated at the upper end, the lower end, the front end and the rear end of one side of the end cover (1).

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