Novel thrust wheel

Abstract

The utility model discloses a novel thrust wheel which comprises a wheel body, a main shaft, a shaft sleeve, a floating sealing piece, an end cover and a shaft seat, the outer ring of the main shaft is sleeved with the shaft sleeve, the shaft sleeve is sleeved in an inner cavity of the wheel body, the floating sealing piece and the end cover are arranged at the matching positions of the two ends of the wheel body and the main shaft, and the shaft seat is provided with a screw hole for a bolt to be inserted in to be fixed with a track frame. The roller is characterized in that extension parts are reserved on roller flanges at two ends of the roller body, and arc groove surfaces are arranged at the lower ends of the extension parts; and the arc-shaped groove surface and the end cover form an arc-shaped groove channel for extruding soil. The arc-shaped channel can automatically discharge soil between the track frame and the thrust wheel, so that the interior of the thrust wheel is prevented from being damaged; the extension part is added to prevent the caterpillar track from derailing and scratching the end cover, and the seal is protected.

Description

Technical Field

[0001] This utility model relates to support rollers, and more particularly to a support roller with an improved end. Background Technology

[0002] As a primary load-bearing component of tracked construction machinery, especially in heavy-duty tracked excavators and bulldozers, the design and manufacturing quality of track rollers directly affects the safety of the entire machine. Installed at the bottom of the track frame, track rollers support the weight of the machinery and distribute it across the track pads. Simultaneously, their roller flanges clamp the track links to prevent lateral slippage, ensuring the machinery moves along the track direction.

[0003] However, under poor actual road conditions, long-term use can cause the track chain to slip off. After slipping off, the sprocket gets stuck in the gap between the inside of the track frame and the end face of the wheel body. The sprocket will wear down the end cover, causing damage to the end cover; this will also damage the floating seal, resulting in damage to the oil circuit, main shaft, and other issues.

[0004] In addition, the axle seat is installed under the track frame, and the track frame, end cover and roller flange form a cavity structure. During use, it is easy to be blocked by mud, which will hinder the rotation of the support roller; when moving on soaked soil, it is also easy to block the support roller. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a novel support roller that solves the technical issues of end cap damage and mud jamming.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a novel support roller, including a wheel body, a main shaft, a bushing, a floating seal, an end cap, and a bearing seat. The main shaft is fitted with a bushing on its outer ring and is fitted into the inner cavity of the wheel body. Floating seals and end caps are provided at both ends of the wheel body where they mate with the main shaft. The bearing seat is provided with screw holes for bolts to be inserted and fixed to the track frame. The characteristic feature is that the roller flanges at both ends of the wheel body have reserved extensions, and the lower end of the extensions is provided with an arc groove surface; the arc groove surface and the end cap form an arc-shaped channel for extruding soil.

[0007] Furthermore, the thickness of the extension is less than the thickness of the roller flange.

[0008] Furthermore, the arc groove surface is a quarter-cylindrical arc surface.

[0009] Furthermore, there is a gap between the end face of the extension and the track frame for mud removal.

[0010] The extension reduces the gap between the track frame and the track roller, creating space solely for mud removal. This prevents the track from derailing and scratching the end caps, and avoids damaging the floating seal inside the track roller. The resulting arc-shaped channel also facilitates mud removal.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0012] 1. The extension reduces the clearance between the track frame and the track roller, protects the end cover, and reduces collisions to the main shaft of the track roller.

[0013] 2. The curved channel will cause the new soil to squeeze out the old soil, and the curved channel will also reduce the amount of soil stuck. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 This is a partial cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the existing technology. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Example

[0020] refer to Figure 1 A novel support roller includes a wheel body 1, a main shaft 2, a bushing 3, a floating seal 4, an end cap 5, and a bearing seat 6. The bushing 3 is fitted around the outer ring of the main shaft 2 and is fitted into the inner cavity of the wheel body 1. The floating seal 4 and the end cap 5 are provided at both ends of the wheel body where they mate with the main shaft. The bearing seat 6 is provided with screw holes for bolts to be inserted and fixed to the track frame 7. The roller flanges 11 at both ends of the wheel body have reserved extensions 8. The thickness of the extensions 8 is less than the thickness of the roller flanges 11. The lower end of the extensions is provided with an arc groove surface 9, which is a quarter-cylindrical arc surface. The arc groove surface and the end cap form an arc-shaped channel 10 for extruding soil.

[0021] There is a gap between the end face of the extension 8 and the track frame 7 for mud removal.

[0022] The spindle is equipped with an oil injection channel and an oil injection hole 12 is provided on the bearing seat.

[0023] The track roller can be lubricated for routine maintenance through the oil filling hole 12;

[0024] The two ends of the support rollers are fixed to the track frame 7 by bolts, so that the machine has the ability to rotate;

[0025] The main shaft 2 is fitted with a bushing 3, which is fitted into the inner cavity of the wheel body 1, so that the main shaft 2 and the wheel body 1 can roll relative to each other;

[0026] The extension 8 can reduce the gap between the wheel body 1 and the track frame 7, preventing the track chain from getting stuck and damaging the end cover during transmission, thus destroying the floating seal 4; with the extension 8, the track chain cannot get stuck and will not damage the protection of the end cover.

[0027] The arc-shaped groove surface and the end cover form an arc-shaped channel 10, which can automatically discharge the soil on both sides of the support roller. This is because the arc-shaped groove surface allows the soil to be discharged from the gap between the support roller and the track frame under the subsequent compression of the soil.

Claims

1. A novel track roller, comprising a wheel body (1), a main shaft (2), a bushing (3), a floating seal (4), an end cap (5), and a bearing seat (6), wherein the main shaft (2) is fitted with a bushing (3) on its outer ring and is fitted into the inner cavity of the wheel body (1), and the wheel body is provided with a floating seal (4) and an end cap (5) at both ends where it mates with the main shaft, and the bearing seat (6) is provided with screw holes for bolts to be inserted and fixed to a track frame (7), characterized in that: The extension (8) is provided with a circular-arc groove (9) at the lower end.

2. A new type of bearing wheel according to claim 1, characterized by: The thickness of the extension (8) is less than that of the roller flange (11).

3. A new type of bearing wheel according to claim 1, characterized in that: The circular-arc groove (9) is a quarter of a cylindrical arc surface.

4. A new type of bearing wheel according to claim 1, characterized in that: The extension (8) is provided with a gap between the end surface and the track frame (7) for discharging mud.

5. A new type of bearing wheel according to claim 1, characterized by: The main shaft is provided with an oil injection channel and an oil injection hole (12) in the shaft seat.

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