Thrust wheel manufactured in split mode

Abstract

The utility model relates to the technical field of thrust wheels, in particular to a thrust wheel manufactured in a split mode, which comprises a thrust wheel body and a side cover arranged on the side edge of the thrust wheel body, the thrust wheel body comprises a main shaft and a thrust wheel shell arranged outside the main shaft, and a bearing pack is arranged between the main shaft and the thrust wheel shell. A sealing ring structure is further arranged between the main shaft and the thrust wheel shell, the outer wall of the sealing ring structure is connected with the inner wall of the thrust wheel shell in a meshed mode through threads and seals a gap between the thrust wheel shell and the main shaft, and the thrust wheel shell comprises a middle pipe and side cylinders symmetrically arranged on the two sides of the middle pipe in a meshed mode. The middle pipe comprises a pipe body internally provided with a containing cavity and a connecting layer arranged on the outer wall of the end of the pipe body, and the side cylinder comprises a cylinder body and a mounting cavity which is formed in the cylinder body and can be attached to the outer wall of the pipe body.

Description

Technical Field

[0001] The utility model relates to the technical field of track wheels, in particular to a track wheel manufactured in separate parts. Background Art

[0002] The track roller is an important chassis component of the crawler machine. Its main function is to bear the structural parts, that is, the track roller is used to support the weight of the machine. The track roller rolls on the track chain link or track guide plate, so that the track moves along the track roller. At the same time, it can also clamp the track and prevent the track from sliding laterally and falling out.

[0003] Existing track rollers usually consist of a track roller housing and a main shaft for installing tracks, which are matched with side covers arranged at both ends of the main shaft. Bearings are arranged between the track roller housing and the main shaft so that the track roller housing can rotate relative to the main shaft. The track rollers are installed in conjunction with the side covers, thereby effectively supporting and guiding the tracks, and the installation and fixing are relatively convenient.

[0004] Although the above-mentioned prior art can solve the corresponding technical problems, it still has certain defects: the existing supporting roller shell is integrally cast on both sides, and then the supporting roller shells on both sides are welded to form a supporting roller finished product, but the supporting roller shell manufactured in this way will have welds, which requires an additional grinding step. At the same time, in order to ensure the strength of the supporting roller shell, an additional heat treatment step is required to improve the uniformity of the integrally formed supporting roller shell. The manufacturing steps are complicated and numerous, which in disguise increases the production cost. Utility Model Content

[0005] The utility model aims to provide a separately manufactured track roller with fewer manufacturing steps and lower cost in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a separately manufactured supporting wheel, comprising a supporting wheel body and a side cover arranged on the side of the supporting wheel body, the supporting wheel body comprising a main shaft and a supporting wheel shell arranged outside the main shaft, a bearing group is arranged between the main shaft and the supporting wheel shell, and two closed ring structures are also arranged between the main shaft and the supporting wheel shell, the outer wall of the closed ring structure is meshed and connected with the inner wall of the supporting wheel shell through a thread and closes the gap between the supporting wheel shell and the main shaft, the supporting wheel shell comprises a middle tube and side tubes symmetrically meshed and arranged on both sides of the middle tube, the middle tube comprises a tube body with an accommodating cavity inside and a connecting layer arranged on the outer wall of the tube end, and the side tube comprises a tube body and an installation cavity arranged in the tube body and can fit the outer wall of the tube body.

[0007] A further improvement is that the inner wall of the installation cavity is provided with an internal thread layer.

[0008] A further improvement is that the connection layer is an external thread layer arranged on the outer wall of the end of the pipe body.

[0009] A further improvement is that an anti-slip guardrail is provided on the outer wall of the cylinder away from the middle tube.

[0010] A further improvement is that the outer wall of the middle section of the tube body is provided with a positioning outer convex ring for positioning the insertion depth of the cylinder body.

[0011] A further improvement is that: the inner wall of the tube body is provided with a limiting inner convex ring.

[0012] A further improvement is that: the closed ring structure is a Gray ring.

[0013] A further improvement is that a side cover gasket is provided between the side cover and the bearing assembly.

[0014] A further improvement is that the outer wall of the middle section of the main shaft is provided with a limiting boss for limiting the sliding of the bearing group.

[0015] A further improvement is that both of the two closed rings are provided with oil filling holes.

[0016] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: the supporting wheel shell of the utility model is composed of a middle tube and side tubes on both sides. The middle tube and the side tubes are manufactured separately and then connected by threads. There is no need for welding, grinding and heat treatment steps. The production steps are relatively simple and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the supporting wheel of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a front cross section of a track wheel of the utility model;

[0020] Figure 3 This is a structural schematic diagram of a front view cross section of the middle tube of the utility model;

[0021] Figure 4 It is a structural schematic diagram of a front view cross section of a side tube of the utility model. DETAILED DESCRIPTION

[0022] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0023] See also Figure 1-4 As shown, the technical solution adopted in this specific embodiment is: a separately manufactured supporting roller, including a supporting roller body 2 and a side cover 1 arranged on the side of the supporting roller body 2, the supporting roller body 2 includes a main shaft 22 and a supporting roller shell 21 arranged outside the main shaft 22, a bearing group 26 is arranged between the main shaft 22 and the supporting roller shell 21, and a closed ring structure 24 is also arranged between the main shaft 22 and the supporting roller shell 21, and the outer wall of the closed ring structure 24 is meshed and connected with the inner wall of the supporting roller shell 21 through a thread and The gap between the supporting wheel shell 21 and the main shaft 22 is closed. The supporting wheel shell 21 includes a middle tube and side tubes symmetrically meshed on both sides of the middle tube. The middle tube includes a tube body 31 with an accommodating cavity inside and a connecting layer 32 arranged on the outer wall of the end of the tube body 31. The connecting layer 32 is an external threaded layer arranged on the outer wall of the end of the tube body 31. The side tube includes a tube body 41 and an installation cavity 44 arranged in the tube body 41 and can fit the outer wall of the tube body 31. When in use, the bearing group 26 is installed into The outer wall of the main shaft 22 is then installed into the supporting wheel shell 21, so that the inner wall of the supporting wheel shell 21 is connected to the bearing group 26, and then the supporting wheel shell 21 can rotate relative to the main shaft 22 through the bearing group 26. The bearing group 26 can be provided with a plurality of bearing groups 26 according to needs. When two or more bearing groups are provided, the supporting wheel can obtain a higher load limit. When the supporting wheel shell 21 is installed, the tube body 31 of the middle tube of the supporting wheel shell 21 is inserted into the outside of the main shaft 22, so that the inner wall thereof is connected to the bearing group 26. Then, the cylinder body 41 of the side cylinder is inserted from both sides and rotated so that the installation cavity 44 of the cylinder body 41 is meshed and screwed into the connecting layer 32 of the outer wall of the tube body 31 for fixing. After both sides of the tube body 31 are installed in the side cylinders, the installation of the supporting wheel shell 21 is completed. The supporting wheel shell 21 is composed of a middle tube and side cylinders on both sides. The middle tube and the side cylinders are manufactured separately and then connected by threads. There is no need for welding, grinding and heat treatment steps. The production steps are relatively simple and the production cost is low.

[0024] The inner wall of the installation cavity 44 is provided with an internal thread layer 42, which is conducive to making it easier for the side tube to be installed into the middle tube and can be screwed into the connection layer 32 for connection and fixation;

[0025] An anti-slip guardrail 43 is provided on the outer wall of the cylinder 41 away from the middle tube, which is helpful to limit the installed crawler and prevent the crawler from slipping out of the side of the supporting wheel housing 21;

[0026] The outer wall of the middle section of the tube body 31 is provided with a positioning outer convex ring 33 for positioning the insertion depth of the cylinder body 41, which is conducive to preventing the cylinder body 41 from moving further when the cylinder body 41 is screwed in to a certain depth, thereby positioning the cylinder body 41;

[0027] The inner wall of the tube body 31 is provided with a limiting inner convex ring 34, which is beneficial to limit the axial movement of the bearing assembly 26;

[0028] The closed ring structure 24 is a Gly ring, which is more conducive to increasing the upper limit of the sealing oil pressure than the traditional O-ring, and can then add engine oil for lubrication, thereby improving the lubrication effect and having a better anti-leakage effect;

[0029] A side cover gasket 25 is provided between the side cover 1 and the bearing assembly 26, which is beneficial to prevent the end of the side cover 1 from directly pressing the friction bearing assembly 26 when the side cover 1 is locked, and to provide a buffer between the two, thereby preventing the side cover 1 from being squeezed and deformed to generate a gap, and further improving the running stability and the fit between the side cover 1 and the main shaft 22;

[0030] The outer wall of the middle section of the main shaft 22 is provided with a limiting boss 27 for limiting the sliding of the bearing group 26, which is conducive to limiting the bearing group 26 and preventing it from sliding along the main shaft 22 during the operation of the supporting roller and affecting the running stability of the supporting roller;

[0031] Both of the two closed rings 24 are provided with refueling holes for conveniently adding lubricating oil. When adding lubricating oil, oil can be added on one side and exhaust can be performed from the refueling hole on the other side to prevent the air pressure in the supporting wheel from hindering the entry of lubricating oil.

[0032] Working principle of the utility model: When the utility model is used, the bearing group 26 is installed into the outer wall of the main shaft 22, and then the supporting wheel shell 21 is installed, so that the inner wall of the supporting wheel shell 21 is connected with the bearing group 26, and then the supporting wheel shell 21 can rotate relative to the main shaft 22 through the bearing group 26. A number of bearing groups 26 can be provided according to needs. When two or more bearing groups 26 are provided, the supporting wheel can obtain a higher load limit. When the supporting wheel shell 21 is installed, the tube body 31 of the middle tube of the supporting wheel shell 21 is inserted into the outer wall of the main shaft 22. , so that its inner wall is connected to the bearing group 26, and then, the cylinder body 41 of the side cylinder is inserted from both sides and rotated, so that the installation cavity 44 of the cylinder body 41 is engaged and screwed into the connecting layer 32 of the outer wall of the tube body 31 for fixation. After both sides of the tube body 31 are installed in the side cylinder, the installation of the supporting wheel shell 21 can be completed. The supporting wheel shell 21 is composed of a middle tube and side cylinders on both sides. The middle tube and the side cylinders are manufactured separately and then connected by threads. There is no need for welding, grinding and heat treatment steps. The production steps are relatively simple and the production cost is low.

[0033] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above functions of the utility model can be used as a choice. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of various components.

[0034] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A separately manufactured roller, comprising a roller body (2) and a side cover (1) arranged on the side of the roller body (2), the roller body (2) comprising a main shaft (22) and a roller shell (21) arranged outside the main shaft (22), a bearing group (26) being arranged between the main shaft (22) and the roller shell (21), and two closed ring structures (24) being arranged between the main shaft (22) and the roller shell (21), the outer wall of the closed ring structure (24) being meshed and connected with the inner wall of the roller shell (21) by a thread and closing the gap between the roller shell (21) and the main shaft (22), characterized in that: The roller housing (21) comprises a middle tube and side tubes symmetrically arranged on both sides of the middle tube, the middle tube comprising a tube body (31) with an accommodating cavity inside and a connecting layer (32) arranged on the outer wall of the end of the tube body (31), and the side tubes comprising a tube body (41) and a mounting cavity (44) arranged in the tube body (41) and capable of fitting the outer wall of the tube body (31).

2. The separately manufactured track roller according to claim 1, characterized in that: The inner wall of the installation cavity (44) is provided with an internal thread layer (42).

3. The separately manufactured track roller according to claim 1, characterized in that: The connecting layer (32) is an external threaded layer arranged on the outer wall of the end of the tube body (31).

4. The separately manufactured track roller according to claim 1, characterized in that: An anti-slip guardrail (43) is provided on the outer wall of the cylinder (41) at a side away from the middle tube.

5. The separately manufactured track roller according to claim 1, characterized in that: The outer wall of the middle section of the tube body (31) is provided with a positioning outer convex ring (33) for positioning the insertion depth of the cylinder body (41).

6. The separately manufactured track roller according to claim 1, characterized in that: The inner wall of the tube body (31) is provided with a limiting inner convex ring (34).

7. The separately manufactured track roller according to claim 1, characterized in that: The closed ring structure (24) is a Gray ring.

8. The separately manufactured track roller according to claim 1, characterized in that: A side cover gasket (25) is provided between the side cover (1) and the bearing assembly (26).

9. The separately manufactured track roller according to claim 1, characterized in that: A limiting boss (27) for limiting the sliding of the bearing assembly (26) is provided on the outer wall of the middle section of the main shaft (22).

10. The separately manufactured track roller according to claim 1, characterized in that: The two closed ring structures (24) are both provided with oil filling holes.

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