Crawler vehicle track roller using a bearing
By introducing buffer components and protective structures into the tracked vehicle's track rollers, the problems of loosening and breakage of the pivot and connecting parts were solved, achieving stable operation of the track rollers and improving the safety of the tracked vehicle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINING JINNIU MACHINERY CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-26
Smart Images
Figure CN224409426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tracked vehicle track roller technology, and in particular to a tracked vehicle track roller using bearings. Background Technology
[0002] Track rollers are an important component of the chassis of tracked engineering machinery. Their main function is to support the weight of the vehicle and roll on the tracks to ensure that the vehicle travels smoothly under various terrain conditions. The structure of a track roller usually includes components such as the wheel body, track roller axle, bushing, seal ring, and end cap. Depending on different usage requirements, track rollers can be divided into single-sided track rollers and double-sided track rollers.
[0003] When existing tracked vehicles using bearings are in use, the direct rigid connection between the axle and the track roller lacks a buffer component. Since the track roller is generally used to support the weight of the vehicle and has a large gravitational load, on bumpy roads, the track roller is directly subjected to the vehicle's weight, which acts on the axle and the connecting parts fixed to the axle. Prolonged impact can cause the axle and connecting parts to loosen, or even cause the axle to break, which is detrimental to the normal operation of the tracked vehicle. Utility Model Content
[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology: When using existing track rollers with bearings, the shaft and the track roller are directly and rigidly connected without a buffer component. Since the track roller is generally used to support the weight of the vehicle and has a large gravity load, on some bumpy roads, the track roller is directly subjected to the vehicle's gravity and the connecting parts fixed to the shaft. Long-term impact can cause the shaft and connecting parts to loosen, or even cause the shaft to break, which is not conducive to the normal operation of the tracked vehicle. Therefore, a track roller with bearings is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A tracked vehicle support roller using bearings includes a connecting seat and a rotating shaft, the rotating shaft being rotatably connected in the connecting seat, and the support roller body being mounted on the outer surface of the rotating shaft;
[0007] A buffer component is installed inside the support roller body. The buffer component includes a fixed ring, a buffer plate, a straight rod, a fixed cylinder, a movable plate, and a buffer spring. The fixed ring is fixedly connected to the inner wall of the support roller body. Multiple buffer plates are fixedly connected to the inner wall of the fixed ring. The fixed cylinder is fixedly connected to the rotating shaft. Multiple cylinders are fixedly connected to the inner wall of the fixed cylinder. The movable plate is slidably connected inside the cylinder. The buffer spring is fixedly connected between the movable plate and the inner wall of the fixed cylinder. One end of the straight rod is fixedly connected to the movable plate, and the other end of the straight rod passes through the fixed cylinder and is fixedly connected to the buffer plate.
[0008] Preferably, the straight rod is slidably connected to the fixed cylinder, a limit ring is slidably connected to the outer surface of the cylinder, and the moving plate passes through the cylinder and is fixedly connected to the limit ring.
[0009] Preferably, two protective covers are fixedly connected to the outer surface of the support roller body, and the protective covers are slidably connected to the rotating shaft.
[0010] Preferably, the outer surface of the protective cover has two limiting holes, the limiting holes are square, and a square plate is slidably connected inside the limiting holes.
[0011] Preferably, the square plate is slidably connected to the protective cover, a shielding plate is fixedly connected to the outer surface of the square plate, and an arc-shaped plate is fixedly connected to the outer surface of the square plate.
[0012] Preferably, the shielding plate is slidably connected to the protective cover, the arc-shaped plate is slidably connected to the protective cover, and a straight spring is fixedly connected between the square plate and the inner wall of the protective cover.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. By using the combined action of components such as buffer plates, straight rods, and cylinders, the impact of the track roller body on the shaft is reduced, which can prevent the shaft from becoming loose from the connecting seat, ensure the normal operation of the shaft, thereby increasing the service life of the track roller body and the shaft, reducing the occurrence of shaft breakage, and ensuring the safety and stability of the tracked vehicle.
[0015] 2. Through the combined action of protective covers, curved plates, straight springs, and other components, stones or foreign objects from the outside cannot enter the body of the support roller. The two curved plates can seal the gaps created by the movement of the shaft, preventing gaps from forming between the support roller body and the shaft when the buffer component is in operation. This ensures the stability of the buffer component and also improves the applicability of the support roller body to some harsh road surfaces. Attached Figure Description
[0016] Figure 1This is a front structural diagram of a tracked vehicle support roller using bearings proposed in this utility model.
[0017] Figure 2 This is a schematic diagram of the external structure of a protective cover for a tracked vehicle support roller using bearings, as proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the internal structure of a protective cover for a tracked vehicle support roller using bearings, as proposed in this utility model.
[0019] Figure 4 This is a schematic diagram of the internal structure of the track roller body of a tracked vehicle using bearings, as proposed in this utility model.
[0020] Figure 5 This is a schematic diagram of a fixed cylinder structure for a tracked vehicle support roller using bearings, as proposed in this utility model.
[0021] Figure 6 This is a schematic diagram of a cylindrical structure for a tracked vehicle support roller using bearings, as proposed in this utility model.
[0022] In the diagram: 1 Connecting seat, 2 Rotating shaft, 3 Support wheel body, 4 Fixing ring, 5 Buffer plate, 6 Straight rod, 7 Fixing cylinder, 8 Cylinder, 9 Moving plate, 10 Limiting ring, 11 Buffer spring, 12 Protective cover, 13 Arc plate, 14 Square plate, 15 Baffle plate, 16 Straight spring, 17 Limiting hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.
[0025] Reference Figure 1 A tracked vehicle support roller using bearings includes a connecting seat 1 and a rotating shaft 2. The rotating shaft 2 is rotatably connected to the connecting seat 1. The support roller body 3 is mounted on the outer surface of the rotating shaft 2. The connecting seat 1 is used to connect with the track of the tracked vehicle and can also prevent the support roller body 3 from derailing. The support roller body 3 is provided with a rotating bearing for the rotation of the support roller body 3.
[0026] Reference Figure 4-6The support roller body 3 is equipped with a buffer component, which includes a fixed ring 4, a buffer plate 5, a straight rod 6, a fixed cylinder 7, a movable plate 9, and a buffer spring 11. The fixed ring 4 is fixedly connected to the inner wall of the support roller body 3 and is a hollow cylinder. Multiple buffer plates 5 are fixedly connected to the inner wall of the fixed ring 4. The fixed cylinder 7 is fixedly connected to the rotating shaft 2. An annular space is opened inside the fixed cylinder 7 for placing a cylinder 8. The rotating shaft 2 passes through the fixed cylinder 7. Multiple cylinders 8 are fixedly connected to the inner wall of the fixed cylinder 7. The cylinders 8 are hollow and have two square through holes on their outer surface. Figure 6 As shown, the movable plate 9 is slidably connected inside the cylinder 8, and the buffer spring 11 is fixedly connected between the movable plate 9 and the inner wall of the fixed cylinder 7. The buffer spring 11 is a rigid spring with great elasticity, which can absorb and relieve the impact force from the outside. One end of the straight rod 6 is fixedly connected to the movable plate 9, and the other end of the straight rod 6 passes through the fixed cylinder 7 and is fixedly connected to the buffer plate 5. The straight rod 6 and the fixed cylinder 7 are slidably connected, and the outer surface of the cylinder 8 is slidably connected to the limiting ring 10. The movable plate 9 passes through the cylinder 8 and is fixedly connected to the limiting ring 10.
[0027] Reference Figure 2-3 Two protective covers 12 are fixedly connected to the outer surface of the support roller body 3. The protective covers 12 are slidably connected to the rotating shaft 2, such as... Figure 3 As shown, two limiting holes 17 are provided on the outer surface of the protective cover 12. The limiting holes 17 are square. A square plate 14 is slidably connected inside the limiting holes 17. The square plate 14 is slidably connected to the protective cover 12. A shielding plate 15 is fixedly connected to the outer surface of the square plate 14. The function of the shielding plate 15 is to shield the limiting holes 17 and prevent foreign objects from entering the protective cover 12 through the limiting holes 17. An arc-shaped plate 13 is fixedly connected to the outer surface of the square plate 14. The arc-shaped plate 13 is tightly attached to the rotating shaft 2 under the action of the straight spring 16. The shielding plate 15 is slidably connected to the protective cover 12, and the arc-shaped plate 13 is slidably connected to the protective cover 12. A straight spring 16 is fixedly connected between the square plate 14 and the inner wall of the protective cover 12.
[0028] In this invention, when the track roller body 3 travels over an uneven surface with the track, it moves downward under the influence of gravity. The track roller body 3 is immediately reacted to by the ground, causing it to move upward a small distance. This is achieved by the buffer plate 5, which pushes the straight rod 6 to move. The straight rod 6 moves towards the rotating shaft 2, and relative sliding occurs between the straight rod 6 and the fixed cylinder 7. The straight rod 6 drives the moving plate 9 to move. The moving plate 9 is slidably connected inside the cylinder 8. The moving plate 9 drives the limiting ring 10 on the outer surface of the cylinder 8 to move. The moving plate 9 is in a limited position... Under the action of ring 10, it can only move in a straight line and will not deviate from its position. The moving plate 9 squeezes the buffer spring 11, which buffers part of the force and prevents this force from acting directly on the shaft 2, thus reducing the impact of the support roller body 3 on the shaft 2. At the same time, since the impact force on the shaft 2 is reduced, the phenomenon of the shaft 2 and the connecting seat 1 becoming loose can be avoided, ensuring the normal operation of the shaft 2, thereby improving the service life of the support roller body 3 and the shaft 2, reducing the occurrence of shaft breakage, and ensuring the safety and stability of the tracked vehicle.
[0029] The protective cover 12 can seal the installation gap between the rotating shaft 2 and the support roller body 3, preventing stones or foreign objects from entering the support roller body 3 and affecting its normal rotation. At the same time, when the support roller body 3 and the rotating shaft 2 move slightly relative to each other, one of the arc-shaped plates 13 moves downward under the thrust of the rotating shaft 2, and the other arc-shaped plate 13 also moves downward under the action of the straight spring 16. The two arc-shaped plates 13 can seal the gap created by the movement of the rotating shaft 2, preventing the gap between the support roller body 3 and the rotating shaft 2 from forming when the buffer component is in operation, thus preventing foreign objects from entering the support roller body 3. This ensures the stability of the buffer component and also improves the applicability of the support roller body 3 to some harsh road surfaces.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A tracked vehicle support roller using bearings, comprising a connecting seat (1) and a rotating shaft (2), characterized in that, The rotating shaft (2) is rotatably connected inside the connecting seat (1), and the outer surface of the rotating shaft (2) is fitted with a support wheel body (3). A buffer component is installed inside the support roller body (3). The buffer component includes a fixed ring (4), a buffer plate (5), a straight rod (6), a fixed cylinder (7), a movable plate (9), and a buffer spring (11). The fixed ring (4) is fixedly connected to the inner wall of the support roller body (3). Multiple buffer plates (5) are fixedly connected to the inner wall of the fixed ring (4). The fixed cylinder (7) is fixedly connected to the rotating shaft (2). Multiple cylinders (8) are fixedly connected to the inner wall of the fixed cylinder (7). The movable plate (9) is slidably connected inside the cylinder (8). The buffer spring (11) is fixedly connected between the movable plate (9) and the inner wall of the fixed cylinder (7). One end of the straight rod (6) is fixedly connected to the movable plate (9), and the other end of the straight rod (6) passes through the fixed cylinder (7) and is fixedly connected to the buffer plate (5).
2. A tracked vehicle support roller using bearings according to claim 1, characterized in that, The straight rod (6) is slidably connected to the fixed cylinder (7), and a limiting ring (10) is slidably connected to the outer surface of the cylinder (8). The moving plate (9) passes through the cylinder (8) and is fixedly connected to the limiting ring (10).
3. A tracked vehicle support roller using bearings according to claim 1, characterized in that, Two protective covers (12) are fixedly connected to the outer surface of the support roller body (3), and the protective covers (12) are slidably connected to the rotating shaft (2).
4. A tracked vehicle support roller using bearings according to claim 3, characterized in that, The outer surface of the protective cover (12) has two limiting holes (17), which are square in shape, and a square plate (14) is slidably connected inside the limiting holes (17).
5. A tracked vehicle support roller using bearings according to claim 4, characterized in that, The square plate (14) is slidably connected to the protective cover (12), and a shielding plate (15) is fixedly connected to the outer surface of the square plate (14). An arc-shaped plate (13) is fixedly connected to the outer surface of the square plate (14).
6. A tracked vehicle support roller using bearings according to claim 5, characterized in that, The shield (15) is slidably connected to the protective cover (12), the arc plate (13) is slidably connected to the protective cover (12), and a straight spring (16) is fixedly connected between the square plate (14) and the inner wall of the protective cover (12).