Reinforced track roller

Abstract

The utility model relates to the technical field of thrust wheels, in particular to a reinforced track thrust wheel 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 wheel shell arranged outside the main shaft, and a bearing pack is arranged between the main shaft and the wheel shell. A sealing ring structure is further arranged between the main shaft and the wheel shell, the outer wall of the sealing ring structure is in meshed connection with the inner wall of the wheel shell through threads and seals a gap between the wheel shell and the main shaft, a connecting layer is arranged on the outer wall of the end of the main shaft, and the main shaft is fixedly connected with the inner wall of the side cover through the connecting layer.

Description

Technical Field

[0001] The utility model relates to the technical field of track rollers, in particular to a reinforced track roller. 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] The Chinese patent number CN204641928U discloses a new type of supporting wheel shell and supporting wheel, which is characterized by: a shell body, which is integrally formed to form a symmetrical two-half shell structure, and the preferred embodiment is directly processed by a lathe. After the shell is tempered as a whole, compared with the traditional welding method, the new type of shell not only eliminates the welding process and simplifies the manufacturing process; but also the overall axial tensile strength of the integral shell structure is greatly improved. When operating under the same complex working conditions or special working conditions, the effectiveness of the overall structure of the supporting wheel can be guaranteed, and the supporting wheel is not prone to failure and oil leakage, which greatly improves the effective performance of the product. In addition, in terms of appearance, there are no welding mark defects, which is much more beautiful than the traditional supporting wheel shell, greatly improving the overall appearance of the product.

[0004] Although the above patents can solve the corresponding technical problems, they still have certain defects:

[0005] The existing track rollers use pins to be inserted into the main shaft and the side covers, thereby connecting the main shaft and the side covers as a whole, preventing the side covers and the main shaft from falling off, thereby effectively restricting the track roller housing and the bearings in the main shaft and making it more convenient to fix and install the track rollers. However, when the track rollers are used on an inclined road surface, the inclined road surface will cause the equipment to apply uneven pressure to the track rollers, with high pressure on one side and low pressure on the other side, which will cause a larger gap on one side of the track roller, which is prone to lubricating oil leakage or road dust intrusion, resulting in accelerated wear of the track rollers, a shorter lifespan and less stable use. Utility Model Content

[0006] The utility model aims to provide a reinforced crawler roller which is stable in use and not prone to tilting and generating gaps in view of the defects and shortcomings of the prior art.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a reinforced track roller, comprising a roller body and a side cover arranged on the side of the roller body, the roller body comprising a main shaft and a wheel shell arranged outside the main shaft, a bearing group is arranged between the main shaft and the wheel shell, and a closed ring structure is also arranged between the main shaft and the wheel shell, the outer wall of the closed ring structure is meshed and connected with the inner wall of the wheel shell through a thread and closes the gap between the wheel shell and the main shaft, the outer wall of the main shaft end is provided with a connecting layer, and the main shaft is connected and fixed to the inner wall of the side cover through the connecting layer.

[0008] A further improvement is that: the connecting layer is an external thread layer structure.

[0009] A further improvement is that the inner wall of the side cover is provided with an internal thread layer corresponding to the connecting layer.

[0010] A further improvement is that: the closed ring structure is a Gray ring.

[0011] A further improvement is that a side cover gasket is provided between the side cover and the bearing assembly.

[0012] A further improvement is that: the bearing group is two tapered roller bearings, and the larger surfaces of the two tapered roller bearings are in contact with each other.

[0013] 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.

[0014] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: the utility model locks the side cover into and fixes it on the main shaft of the supporting wheel body through threads, and then when the supporting wheel is used on an inclined road surface and is subjected to uneven forces on both sides, the side cover and the main shaft can be stably fitted and fixedly connected through threads, avoiding the generation of a gap between the two, preventing the leakage of lubricating oil or the entry of road dust into the supporting wheel body, slowing down the wear rate of the supporting wheel and extending its service life. At the same time, since there is no gap, the rolling rotation of the supporting wheel during operation is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the supporting wheel of the utility model;

[0017] Figure 2It is a structural schematic diagram of a front cross section of a track wheel of the utility model. DETAILED DESCRIPTION

[0018] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figure 1-2 As shown, the technical solution adopted in this specific embodiment is: a reinforced track roller, including a roller body 2 and a side cover 1 arranged on the side of the roller body 2, the roller body 2 includes a main shaft 22 and a wheel shell 21 arranged outside the main shaft 22, a bearing group 26 is arranged between the main shaft 22 and the wheel shell 21, and a closed ring structure 24 is also arranged between the main shaft 22 and the wheel shell 21, and the outer wall of the closed ring structure 24 is meshed and connected with the inner wall of the wheel shell 21 through a thread and The gap between the wheel housing 21 and the main shaft 22 is closed, and the outer wall of the end of the main shaft 22 is provided with a connecting layer 23, and the connecting layer 23 is an external thread layer structure. The main shaft 22 is connected and fixed to the inner wall of the side cover 1 through the connecting layer 23. When in use, the bearing group 26 is installed into the outer wall of the main shaft 22, and then the wheel housing 21 is installed to connect the inner wall of the wheel housing 21 with the bearing group 26, and then the wheel housing 21 can be relatively rotated with the main shaft 22 through the bearing group 26, and the bearing group 26 can Several of them are provided as required. When two or more are provided, the supporting wheel can obtain a higher load limit. Then, the side cover 1 is screwed into the connecting layer 23, i.e., the external threaded layer structure, so that the side cover 1 is meshed and locked on the main shaft 22 through the connecting layer. Then, the closing ring structure 24 is screwed into the side cover 1 to close the gap between the main shaft 22 and the wheel shell 21. At this time, the entire supporting wheel can be installed on the use equipment through the side cover 1, and the track can be installed through the wheel shell 21. When the supporting wheel is used on an inclined road and subjected to uneven forces on both sides, the side cover 1 can be stably fitted and fixedly connected to the main shaft 22 through the connecting layer 23, i.e., the external threaded layer structure, to avoid the generation of a gap between the two, to prevent the occurrence of lubricating oil leakage or road dust entering the inside of the supporting wheel body 2, to slow down the wear rate of the supporting wheel, and to prolong the service life. At the same time, since there is no gap, the rolling rotation of the supporting wheel during operation is more stable;

[0020] The inner wall of the side cover 1 is provided with an internal thread layer 12 corresponding to the connection layer 23, which is conducive to faster installation of the side cover 1 through the mutual engagement of the internal thread layer 12 and the connection layer 23, and the installation is more time-saving and labor-saving;

[0021] 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;

[0022] 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;

[0023] The bearing set 26 is two tapered roller bearings, and the larger surfaces of the two tapered roller bearings fit each other, which is conducive to making the load-bearing capacity stronger and offsetting the axial force generated during operation, so that the supporting wheel is more stable during operation;

[0024] 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;

[0025] Both of the closed ring structures 24 are provided with refueling holes for conveniently adding lubricating oil. When adding lubricating oil, refueling can be done on one side and exhaust can be done from the refueling hole on the other side to prevent the air pressure in the supporting wheel from hindering the lubricating oil from entering.

[0026] The inner wall of the middle section of the wheel housing 21 is provided with a second limiting boss for limiting the sliding of the bearing group 26, which is conducive to cooperating with the limiting boss 27 of the main shaft 22 to further limit the lateral sliding of the bearing group 26, and can also be used alone to limit the bearing group 26.

[0027] 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 wheel shell 21 is installed so that the inner wall of the wheel shell 21 is connected to the bearing group 26, and then the 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 as required. When two or more bearing groups are provided, the supporting wheel can obtain a higher load limit. Then, the side cover 1 is screwed into the connecting layer 23, i.e., the external threaded layer structure, so that the side cover 1 is meshed and locked on the main shaft 22 through the connecting layer, and then the closing ring structure 24 is screwed in so that it cooperates with the side cover 1 to close the main shaft. The gap between the shaft 22 and the wheel shell 21 can be used to install the entire supporting wheel on the equipment through the side cover 1, and the track can be installed through the wheel shell 21. When the supporting wheel is used on an inclined road and is subjected to uneven forces on both sides, the side cover 1 and the main shaft 22 can be stably fitted and fixedly connected through the connecting layer 23, that is, the external threaded layer structure, to avoid a gap between the two, prevent lubricating oil leakage or road dust from entering the supporting wheel body 2, slow down the wear rate of the supporting wheel, and extend its service life. At the same time, since there is no gap, the rolling rotation of the supporting wheel is more stable during operation.

[0028] 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.

[0029] 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 reinforced track 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 wheel shell (21) arranged outside the main shaft (22), a bearing group (26) being arranged between the main shaft (22) and the wheel shell (21), and two closed ring structures (24) being arranged between the main shaft (22) and the wheel shell (21), the outer wall of the closed ring structure (24) being meshed and connected with the inner wall of the wheel shell (21) through a thread and closing the gap between the wheel shell (21) and the main shaft (22), characterized in that: The outer wall of the end of the main shaft (22) is provided with a connecting layer (23), and the main shaft (22) is connected and fixed to the inner wall of the side cover (1) via the connecting layer (23).

2. The reinforced track roller according to claim 1, characterized in that: The connecting layer (23) is an external thread layer structure.

3. The reinforced track roller according to claim 2, characterized in that: The inner wall of the side cover (1) is provided with an internal thread layer (12) corresponding to the connection layer (23).

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

5. The reinforced 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).

6. A reinforced track roller according to claim 1 or 5, characterized in that: The bearing set (26) is two tapered roller bearings, and the larger surfaces of the two tapered roller bearings are in contact with each other.

7. The reinforced 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).

8. A reinforced track roller according to claim 1 or 4, characterized in that: The two closed ring structures (24) are both provided with oil filling holes.

9. The reinforced track roller according to claim 1, characterized in that: A second limiting boss for limiting the sliding of the bearing assembly (26) is provided on the inner wall of the middle section of the wheel housing (21).

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