High-durability dustproof idle wheel

Abstract

The utility model discloses a dustproof idle wheel with high durability, which comprises a wheel body and a bearing, the wheel body is sleeved on the outer ring of the bearing, and the dustproof idle wheel is characterized in that the inner ring of the bearing is provided with a shaft core which is integrally formed with the inner ring of the bearing, the shaft core is provided with a central hole, a bolt is arranged in the central hole in a penetrating manner, and the lower end of the bearing is detachably provided with a first dustproof cover. A connecting hole is formed in the center of the first dustproof cover and is matched with the bolt; a second dustproof cover is arranged at the upper end of the bearing in a matched mode, the upper shaft end of the inner ring of the corresponding bearing is higher than the upper shaft end of the outer ring, the second dustproof cover is fixedly arranged at the upper shaft end of the inner ring in a sleeved mode, and the periphery of the first dustproof cover extends to the upper shaft end of the outer ring. According to the utility model, a good dustproof effect on the bearing is achieved, and the maintenance convenience is effectively improved due to the detachable design of the first dustproof cover.

Description

Technical Field

[0001] This utility model relates to an improved invention of an idler wheel, and more particularly to an improved invention of a highly durable dustproof idler wheel. Background Technology

[0002] Engine idler wheels typically have built-in rolling bearings. In harsh environments, dust and other impurities can enter and accumulate inside the bearings along both ends, easily leading to bearing lubrication deterioration and jamming failure. Therefore, dust covers are usually installed at both ends of the bearings. The dust covers and the annular grooves on the idler wheel form a labyrinth to prevent dust. However, the dust covers are fixed to both ends of the bearings by press-fitting or other non-removable methods, which increases the maintenance costs of bearing grease lubrication and cleaning blind spots. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a highly durable dustproof idler wheel.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This high-durability dustproof idler wheel includes a wheel body and a bearing. The wheel body is sleeved on the outer ring of the bearing. The bearing inner ring is provided with an integrally formed shaft core. The shaft core has a central hole, and a bolt passes through the central hole. A first dustproof cover is detachably provided at the lower end of the bearing. The first dustproof cover has a connecting hole in the center, and the connecting hole cooperates with the bolt. A second dustproof cover is provided at the upper end of the bearing. The upper shaft end of the corresponding inner ring is higher than the upper shaft end of the outer ring. The second dustproof cover is fixedly sleeved on the upper shaft end of the inner ring, and the outer periphery of the first dustproof cover extends to the upper shaft end of the outer ring.

[0005] The outer periphery of the first dust cover extends to the wheel body, and the corresponding wheel body axle end is provided with a groove. The outer periphery of the first dust cover is provided with a first dustproof flange, which extends into the groove.

[0006] The bolt head is placed inside the inner ring of the bearing, and the corresponding bolt heads and shaft cores are distributed vertically inside the inner ring of the bearing.

[0007] The connecting hole is provided with annular serrations, which mesh with the threads of the bolt.

[0008] The second dust cover is press-fitted to the upper shaft end of the inner ring, and a press-fit flange is provided on the center hole of the corresponding second dust cover.

[0009] The second dust cover has a second dustproof flange on its outer periphery.

[0010] The beneficial effects of this utility model are that the improved high-durability dustproof idler wheel, by setting a first dust cover and a second dust cover at the upper and lower ends of the bearing, provides a good dustproof effect on the bearing and plays a role in protecting the bearing from pollution, thereby improving the service life of the idler wheel. In addition, the detachable design of the first dust cover effectively improves the convenience of maintenance, such as facilitating the lubrication of the bearing and cleaning blind spots. Attached Figure Description

[0011] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a top view of the structure of this utility model.

[0014] Figure 3 This utility model Figure 2 AA sectional view. Detailed Implementation

[0015] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1-3 This high-durability dustproof idler wheel includes a wheel body 1 and a bearing 2. The wheel body 1 is fitted onto the outer ring 21 of the bearing. The inner ring 22 of the bearing has an integrally formed shaft core 3. The shaft core 3 has a central hole, through which a bolt 4 passes. The bolt 4 extends out of the bearing 2 for the idler wheel to be installed. The lower end of the bearing 2 is detachably fitted with a first dust cover 5. The center of the first dust cover 5 has a connecting hole 51, which cooperates with the bolt 4. The first dust cover 5 covers the lower ball bearing area of ​​the bearing 2. The upper end of the bearing 2 is fitted with a second dust cover 6. The upper shaft end of the corresponding inner ring 22 is higher than the upper shaft end of the outer ring 21. The second dust cover 6 is fixedly fitted onto the upper shaft end of the inner ring 22, and the outer periphery of the first dust cover 5 extends to the upper shaft end of the outer ring 21. The second dust cover 6 covers the upper ball bearing area of ​​the bearing 2.

[0016] The installation principle of this utility model dust cover is as follows: the bolt 4 passes through the center hole of the shaft core 3, with the head of the bolt 4 located at the top. The threaded section of the bolt 4 extends from the lower end of the shaft core 3. The first dust cover 5 is connected to the extended threaded section of the bolt 4 through the connecting hole 51, and is fixed and covers the lower end of the bearing 2. The second dust cover 6 is press-fitted to the upper shaft end of the inner ring 22 of the bearing. The first dust cover 5 adopts a threaded connection and a detachable design, which effectively improves the convenience of maintenance, such as facilitating grease lubrication of the bearing 2 and cleaning blind spots.

[0017] As a further improved specific implementation, the outer periphery of the first dust cover 5 extends to the wheel body 1, and the corresponding wheel body 1 shaft end is provided with a groove 11. The outer periphery of the first dust cover 5 is provided with a first dustproof flange 52, which extends into the groove 11, thereby achieving a good dustproof effect of the first dust cover 5 on the lower end of the bearing 2.

[0018] As a further improved embodiment, the head of the bolt 4 is placed inside the inner ring 22 of the bearing, and the corresponding bolt heads and shaft core 3 are distributed vertically inside the inner ring 22 of the bearing, thus hiding the bolt heads inside the bearing ring 2, improving structural compactness, and preventing the bolt heads from affecting the installation requirements of the idler wheel. Preferably, the bolt heads are hexagonal internal structures, which facilitates tightening inside the inner ring 22 of the bearing.

[0019] As a further improved embodiment, the connecting hole 51 is provided with annular serrations, which engage with the thread of the bolt 4 to achieve disassembly, which is quick and convenient, and to keep the structure from loosening when engaged.

[0020] As a further improved specific implementation, the second dust cover 6 is press-fitted to the upper shaft end of the inner ring 22 of the bearing, and a press-fit flange 61 is provided on the center hole of the corresponding second dust cover 6, and the press-fit flange 61 is tightly fitted to the upper shaft end of the inner ring.

[0021] As a further improved specific implementation, the second dust cover 6 is provided with a second dustproof flange 62 on its outer periphery to prevent dust from moving radially outward from the outer side of the second dust cover 6.

[0022] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-durability dustproof idler wheel, comprising a wheel body and a bearing, wherein the wheel body is sleeved on the outer ring of the bearing, characterized in that: The bearing inner ring is provided with an axle core integrally formed thereon, the axle core is provided with a center hole, a bolt is arranged in the center hole, a first dust cover is detachably arranged at the lower end of the bearing, the first dust cover is provided with a connecting hole in the center thereof, and the connecting hole is matched with the bolt; a second dust cover is arranged at the upper end of the bearing, the upper end of the bearing inner ring is higher than the upper end of the outer ring, the second dust cover is fixedly arranged on the upper end of the inner ring, and the outer periphery of the first dust cover extends to the upper end of the outer ring.

2. The high durability dust-proof idler as claimed in claim 1, wherein: The outer periphery of the first dust cover extends to the wheel body, the axle end of the wheel body is provided with a groove, the outer periphery of the first dust cover is provided with a first dust cover flange, and the first dust cover flange extends into the groove.

3. The high durability dust protected idler of claim 1, wherein: The head of the bolt is arranged in the inner part of the bearing inner ring, and the head of the bolt is distributed in the inner part of the bearing inner ring above and below the axle core.

4. The high durability dust protected idler of claim 1, wherein: The connecting hole is provided with an annular sawtooth, and the annular sawtooth is engaged with the thread of the bolt.

5. The high durability dust protected idler of claim 1, wherein: The second dust cover is press-fitted on the upper end of the inner ring, and the center hole of the second dust cover is provided with a press-fitting flange.

6. The high durability dust protected idler of claim 1, wherein: The outer periphery of the second dust cover is provided with a second dust cover flange.

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