An idler wheel with a special bearing

Abstract

The utility model relates to an idler wheel of a special bearing, which is characterized in that it comprises a double-row angular contact bearing, the double-row angular contact bearing comprises a central shaft and a bearing rotatably arranged on the central shaft, a hollow mounting column is fixedly arranged in the central shaft, the rear end of the central shaft is flush with the rear end of the hollow mounting column, the front end of the central shaft protrudes from the front end of the hollow mounting column, and a pulley is rotatably arranged on the circumferential outer surface of the bearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of idler wheels, and in particular relates to an idler wheel with a special bearing. Background Art

[0002] The existing idler wheel uses two single-row deep groove ball bearings. There is a difference in the clearance of the two single-row deep groove ball bearings, which causes uneven force when the pulley and the shaft core are pressed. After the bearing is pressed through the outer ring and the pulley, and the inner ring and the shaft core are pressed, the clearance value fluctuates greatly, causing the bearing to fail prematurely and the heat dissipation effect is poor. Summary of the invention

[0003] In order to solve the above technical problems, the utility model provides the following technical solutions: an idler wheel of a special bearing, characterized in that it includes a double-row angular contact bearing, the double-row angular contact bearing includes a central shaft and a bearing rotatably arranged on the central shaft, a hollow mounting column is fixedly arranged in the central shaft, the rear end of the central shaft is flush with the rear end of the hollow mounting column, the front end of the central shaft protrudes from the front end of the hollow mounting column, and a pulley is rotatably arranged on the circumferential outer surface of the bearing.

[0004] The utility model is further configured as follows: the pulley includes a circular plate rotatably connected to the bearing, the front and rear ends of the circular plate are respectively bent upward to form a front connecting plate and a rear connecting plate, the front connecting plate is fixed with a front fixing plate on the side facing the rear connecting plate, and the rear connecting plate is fixed with a rear fixing plate on the side facing the front connecting plate, the rear connecting plate and the front connecting plate are spaced apart to form a heat dissipation groove, the circumferential outer surface of the circular plate is gapped with the front fixing plate and the rear fixing plate, and a support rod for connecting the circular plate and the front fixing plate and the circular plate and the rear fixing plate is provided in the gap.

[0005] The utility model is further configured as follows: an oil filling hole is opened on the front side of the hollow mounting column, and a sealing member is provided at the oil inlet of the oil filling hole.

[0006] The beneficial effects of the utility model are as follows: by providing a double-row angular contact bearing and merging the size of the central axis into the inner ring of the bearing, the dimensional accuracy and consistency of the double-row bearing are better than those of a single-row bearing, and thus the service life is significantly better than that of a single-row standard bearing. Heat is generated during long-term use, and by providing a heat dissipation groove, the heat can be quickly dissipated from the heat dissipation groove. A gap is provided between the circular plate and the front and rear fixed plates to facilitate the placement of the support rod, which supports the front and rear fixed plates, thereby avoiding bending and deformation of the opposite ends of the front and rear fixed plates caused by long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0008] Attached Figure 2 It is a rear view structural schematic diagram of the utility model;

[0009] Attached Figure 3 It is a schematic diagram of the structure in which the sealing element of the utility model is arranged on a hollow mounting column;

[0010] Attached Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0011] Attached Figure 5 It is a cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] according to Figure 1-5 The present embodiment discloses an idler wheel of a special bearing, comprising a double-row angular contact bearing 1, wherein the double-row angular contact bearing 1 comprises a central shaft 2 and a bearing 3 rotatably arranged on the central shaft 2, wherein a hollow mounting column 4 is fixedly arranged in the central shaft 2, wherein the rear end of the central shaft 2 is flush with the rear end of the hollow mounting column 4, and the front end of the central shaft 2 protrudes from the front end of the hollow mounting column 4, and by protruding the front end of the central shaft from the front end of the hollow mounting column, when installing, the nut is located in the interval between the front end of the central shaft and the front end of the hollow mounting column, thereby reducing the installation space and preventing the nut from protruding from the central shaft, and a pulley 5 is rotatably arranged on the circumferential outer surface of the bearing 3, and by arranging a double-row angular contact bearing and merging the size of the central shaft into the inner ring of the bearing, the dimensional accuracy and consistency of the double-row bearing are better than those of the single-row bearing, and thus the service life is significantly better than that of the single-row standard bearing.

[0013] The utility model is further configured as follows: the pulley 5 includes a circular plate 6 rotatably connected to the bearing 3, and the front and rear ends of the circular plate 6 are bent upward to form a front connecting plate 7 and a rear connecting plate 8 respectively. The front connecting plate 7 is fixed with a front fixing plate 9 on the side facing the rear connecting plate 8, and the rear connecting plate 8 is fixed with a rear fixing plate 10 on the side facing the front connecting plate 7. The rear connecting plate 8 and the front connecting plate 7 are spaced apart to form a heat dissipation groove 11. Heat is generated when used for a long time. By setting the heat dissipation groove, the heat can be quickly dissipated from the heat dissipation groove. The circumferential outer surface of the circular plate 6 and the front fixing plate 9 and the rear fixing plate 10 are all gapped, and a support rod 14 for connecting the circular plate 6 and the front fixing plate 9 and the circular plate 6 and the rear fixing plate 10 is provided in the gap. The gap between the circular plate and the front and rear fixing plates is set to facilitate the placement of the support rod. The support rod supports the front fixing plate and the rear fixing plate to avoid bending and deformation of the opposite ends of the front fixing plate and the rear fixing plate due to long-term use.

[0014] The utility model is further configured as follows: an oil filling hole 12 is opened on the front side of the hollow mounting column 4, and the oil outlet of the oil filling hole is connected with the gap between the fixing part of the bearing and the central axis, which plays a role in lubricating the rolling parts in the bearing. A sealing member 13 is provided at the oil inlet of the oil filling hole 12, and the sealing member is a plug. By setting the plug, a backflow prevention function is played, thereby preventing the oil from flowing out of the oil inlet hole.

[0015] The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above implementation mode. Any modification, alteration or equivalent substitution made by a person skilled in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. An idler wheel of a special bearing, characterized in that: It comprises a double-row angular contact bearing, which comprises a central shaft and a bearing rotatably arranged on the central shaft, a hollow mounting column is fixedly arranged in the central shaft, the rear end of the central shaft is flush with the rear end of the hollow mounting column, the front end of the central shaft protrudes from the front end of the hollow mounting column, and a pulley is rotatably arranged on the circumferential outer surface of the bearing.

2. The idler wheel of a special bearing according to claim 1, characterized in that: The pulley includes a circular plate rotatably connected to the bearing, and the front and rear ends of the circular plate are respectively bent upward to form a front connecting plate and a rear connecting plate, a front fixing plate is fixed to the side of the front connecting plate facing the rear connecting plate, and a rear fixing plate is fixed to the side of the rear connecting plate facing the front connecting plate, the rear connecting plate and the front connecting plate are spaced apart to form a heat dissipation groove, and a gap is set between the circumferential outer surface of the circular plate and the front fixing plate and the rear fixing plate, and a support rod for connecting the circular plate and the front fixing plate and the circular plate and the rear fixing plate is provided in the gap.

3. The idler wheel of a special bearing according to claim 2, characterized in that: An oil filling hole is provided on the front side of the hollow mounting column, and a sealing member is provided at the oil inlet of the oil filling hole.

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