Connecting structure for main shaft and side cover of thrust wheel

Abstract

The utility model relates to the technical field of thrust wheels, in particular to a thrust wheel spindle and side cover connecting structure which comprises a spindle and a side cover detachably arranged on the outer wall of the end of the spindle, a cavity with the inner wall capable of being attached to the spindle is formed in the side cover, and the spindle comprises a spindle body and a connecting layer arranged on the outer wall of the end of the spindle body. And the inner wall of the side cover is detachably arranged on the outer wall of the end part of the main shaft body by being meshed with the connecting layer.

Description

Technical Field

[0001] The utility model relates to the technical field of idler wheels, and particularly relates to a connection structure between an idler wheel main shaft and a side cover. Background Art

[0002] An idler wheel is an important chassis part of a crawler machine. Its main function is to bear structural parts, that is, the idler wheel is used to support the gravity of the machine. The idler wheel rolls on the crawler chain links or the crawler guide plates, enabling the crawler to move forward along the idler wheel. At the same time, it can also play a role in clamping the crawler and preventing the crawler from slipping out laterally.

[0003] In the existing idler wheel, a pin is inserted into the main shaft and the side cover, and then the main shaft and the side cover are linked into a whole to prevent the side cover from falling off the main shaft. Furthermore, the idler wheel shell and components such as bearings inside the main shaft are effectively restricted, and it is more convenient to install the idler wheel on the equipment for use.

[0004] Although the above-mentioned existing technology can solve corresponding technical problems, there are still certain defects: when the idler wheel is used on an inclined road surface, the inclined road surface will cause uneven pressure exerted by the equipment on the idler wheel, with high pressure on one side and low pressure on the other side. As a result, a large gap will be generated on one side of the idler wheel, which is likely to cause lubricating oil leakage or road dust to enter, leading to an accelerated wear rate of the idler wheel, a short service life, and unstable use. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a connection structure between an idler wheel main shaft and a side cover that is stable in use and not prone to generating gaps due to inclination, aiming at the defects and deficiencies of the existing technology.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions: a connection structure between an idler wheel main shaft and a side cover, including a main shaft and a side cover detachably arranged on the outer wall of the end of the main shaft. The side cover is provided with a cavity whose inner wall can fit the main shaft. The main shaft includes a main shaft body and a connection layer arranged on the outer wall of the end of the main shaft body. The inner wall of the side cover is detachably arranged on the outer wall of the end of the main shaft body through meshing connection with the connection layer.

[0007] Further improvement is that: a limiting convex ring is further arranged on the outer wall of the middle section of the main shaft body.

[0008] Further improvement is that: the connection layer is an external thread layer.

[0009] Further improvement is that: a blocking piece is fitted between the end of the main shaft and the inner wall of the side cover.

[0010] Further improvement is that: a fixing ring is further fitted between one side of the blocking piece and the inner wall of the side cover.

[0011] Further improvement: The inner wall of the cavity of the side cover is provided with internal threads.

[0012] Further improvement: The inner wall of the cavity of the side cover is provided with a receiving card slot having the same outer diameter as the fixing ring.

[0013] Further improvement: The side cover is provided with a plurality of mounting holes penetrating the side cover.

[0014] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: The present utility model locks and fixes the side cover on the main shaft body through threads. Then, when the idler wheel is used on an inclined road surface and uneven forces are applied on both sides, the side cover can be stably fitted and fixedly connected to the main shaft body through the threads, avoiding the generation of gaps between the two, preventing the occurrence of phenomena such as lubricating oil leakage or road dust entering the inside of the idler wheel body, slowing down the wear speed of the idler wheel, having a longer service life, and at the same time, since there are no gaps, the idler wheel rolls and rotates more stably during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the connection structure of the present utility model;

[0017] Figure 2 It is a front-view cross-sectional structural schematic diagram of the connection structure of the present utility model;

[0018] Figure 3 It is a front-view cross-sectional structural schematic diagram of the side cover of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0020] Refer to Figures 1-3As shown in the figure, the technical solution adopted in this specific embodiment is as follows: A connecting structure between the carrier roller main shaft and the side cover, including the main shaft 1 and the side cover 2 detachably arranged on the outer wall of the end of the main shaft 1. There is a cavity inside the side cover 2 whose inner wall can fit the main shaft 1. The main shaft 1 includes the main shaft body 11 and a connecting layer 12 arranged on the outer wall of the end of the main shaft body 11. The connecting layer 12 is an external thread layer. The inner wall of the side cover 2 is detachably arranged on the outer wall of the end of the main shaft body 11 through meshing connection with the connecting layer 12. When in use, fix the main shaft body 11 first, and then align the cavity of the side cover 2 with the main shaft body 11 and turn the side cover 2, then the side cover 2 can be screwed onto the outer wall of the end of the main shaft body 11 through the connecting layer 12, that is, the external thread layer, to achieve a very low-gap combination with the main shaft body 11. When disassembly is required, reverse the side cover 2 to screw the side cover 2 out and remove it from the end of the main shaft body 11. When the carrier roller is used on an inclined road surface and uneven forces are applied on both sides, the side cover 2 can be stably fitted and fixedly connected to the main shaft body 11 through the threads of the connecting layer 12, avoiding the generation of gaps between the two, preventing the occurrence of phenomena such as lubricating oil leakage or road dust entering the inside of the carrier roller body, slowing down the wear speed of the carrier roller, having a longer service life, and at the same time, since there are no gaps, the carrier roller rotates more stably during operation;

[0021] A limiting convex ring 13 is also provided on the outer wall of the middle section of the main shaft body 11, which is beneficial for restricting the sliding of the bearing after the bearing is installed on the main shaft body 11, making the carrier roller run more stably after loading;

[0022] A blocking piece 14 is fitted between the end of the main shaft 1 and the inner wall of the cavity of the side cover 2, which is beneficial for avoiding debris such as stones from entering the main shaft 1 through the cavity when the carrier roller is running, and preventing the debris from getting stuck and affecting the running stability of the carrier roller;

[0023] A fixing ring 15 is also fitted between one side of the blocking piece 14 and the inner wall of the side cover 2, which is beneficial for improving the fixing effect of the blocking piece 14 and preventing it from falling off;

[0024] The inner wall of the cavity of the side cover 2 is provided with an internal thread 22, which is beneficial for making it more convenient and labor-saving to screw the side cover 2 onto the connecting layer 12 and fix it;

[0025] The inner wall of the cavity of the side cover 2 is provided with a receiving slot 23 having the same outer diameter as the fixing ring 15, which is beneficial for better positioning and clamping the fixing ring 15 through the receiving slot 23 so that it will not loosen after being clamped, and further making the blocking piece 14 more firmly fixed;

[0026] The side cover 2 is provided with several mounting holes 24 penetrating the side cover 2. In this embodiment, there are two, which is beneficial for making it more convenient to fixedly install the side cover 2 on the device using the carrier roller.

[0027] Working principle of the utility model: When the utility model is in use, the main shaft body 11 is fixed. Subsequently, the cavity of the side cover 2 is aligned with the main shaft body 11, and by turning the side cover 2, the side cover 2 can be screwed onto the outer wall of the end of the main shaft body 11 through the connection layer 12, i.e., the external thread layer, to achieve a combination with an extremely low gap with the main shaft body 11. When disassembly is required, reversing the side cover 2 can unscrew and remove the side cover 2 from the end of the main shaft body 11. When the idler wheel is used on an inclined road surface and uneven forces are applied on both sides, the side cover 2 can be stably fitted and fixedly connected to the main shaft body 11 through the threads of the connection layer 12, avoiding the generation of gaps between the two, preventing the occurrence of phenomena such as lubricating oil leakage or road dust entering the inside of the idler wheel body, slowing down the wear rate of the idler wheel, and having a longer service life. At the same time, since there are no gaps, the idler wheel rotates more stably during operation.

[0028] What the utility model aims to protect is the structure of the product. The models of each component are not the content protected by the utility model and are also well-known technologies. Any components on the market that can achieve the above functions of the utility model can be selected for application. Therefore, parameters such as the models of the components are not described in detail in the utility model. The contribution of the utility model lies in the scientific combination of each component.

[0029] The above has shown and described the basic principles, main features and their advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and explanations only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents. Where the utility model is not described in detail, it is all well-known technology to those skilled in the art.

Claims

1. A structure for connecting a main shaft of a supporting wheel and a side cover, comprising a main shaft (1) and a side cover (2) detachably arranged on the outer wall of an end of the main shaft (1), wherein the side cover (2) is provided with a cavity whose inner wall can fit the main shaft (1), and characterized in that: The main shaft (1) comprises a main shaft body (11) and a connection layer (12) arranged on the outer wall of the end of the main shaft body (11); the inner wall of the side cover (2) is detachably arranged on the outer wall of the end of the main shaft body (11) by meshing connection with the connection layer (12).

2. The connecting structure of the main shaft of the supporting wheel and the side cover according to claim 1, characterized in that: A limiting convex ring (13) is also provided on the outer wall of the middle section of the main shaft body (11).

3. The connecting structure of the main shaft of the supporting wheel and the side cover according to claim 1, characterized in that: The connecting layer (12) is an external thread layer.

4. The connecting structure of the main shaft of the supporting wheel and the side cover according to claim 1, characterized in that: A blocking piece (14) is provided between the end of the main shaft (1) and the inner wall of the side cover (2).

5. The structure for connecting the main shaft of a track roller to a side cover according to claim 4, characterized in that: A fixing ring (15) is also provided between one side of the blocking piece (14) and the inner wall of the side cover (2).

6. A connecting structure between a main shaft of a track roller and a side cover according to claim 1, 4 or 5, characterized in that: An inner wall of the cavity of the side cover (2) is provided with an internal thread (22).

7. The connecting structure of the main shaft of the supporting wheel and the side cover according to claim 5, characterized in that: The inner wall of the cavity of the side cover (2) is provided with a receiving slot (23) having the same outer diameter as the fixing ring (15).

8. The connecting structure of the main shaft of the supporting wheel and the side cover according to claim 1, characterized in that: The side cover (2) is provided with a plurality of mounting holes (24) penetrating the side cover (2).

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