Light truck front axle maintenance-free bearing unit

Abstract

The application discloses a light truck front axle maintenance-free bearing unit and belongs to the technical field of light truck front axle accessories. The light truck front axle maintenance-free bearing unit comprises a brake drum, a wheel disc fixedly arranged on one side of the brake drum, a bearing shell fixedly arranged on one side of the wheel disc and located on the inner side of the brake drum, an outer bearing arranged on the inner side of the bearing shell, and an inner bearing arranged on the inner side of the bearing shell. The outer bearing is arranged on the side close to the wheel disc, the outer ring of the outer bearing is fixedly arranged on the inner side of the bearing shell, the inner bearing is arranged on the side close to the wheel hub, the outer ring of the inner bearing is fixedly arranged on the inner side of the bearing shell, and the inner rings of the outer bearing and the inner bearing are arranged in cooperation with the wheel hub. The application effectively solves the problems that the tapered roller bearing needs to be regularly lubricated and maintained, the maintenance frequency is high, and the cost is large in the prior art, and the effect of maintenance-free bearing unit is achieved.

Description

Technical Field

[0001] This application relates to the technical field of light truck front axle components, and more specifically, to maintenance-free bearing units for light truck front axles. Background Technology

[0002] The front axle of a light truck is usually located at the front of the vehicle and is an important load-bearing and force-transmitting component connecting the body and the wheels. It is mainly responsible for bearing the weight of the front of the vehicle and transmitting the road reaction force to the suspension system. At the same time, it works with the steering mechanism to guide the vehicle. Its structural stability directly determines the driving safety and handling performance of the entire vehicle. In order to realize the wheel hub support and power transmission functions of the front axle of a light truck and ensure the driving stability of the vehicle, the existing wheel hub structure integrates the wheel hub and brake drum into one piece and uses tapered roller bearings to achieve support and transmission.

[0003] However, the tapered roller bearings used require regular lubrication and maintenance, which is costly and frequent, affecting vehicle operating efficiency.

[0004] In view of this, we propose a maintenance-free bearing unit for the front axle of light trucks. Utility Model Content

[0005] The purpose of this application is to provide a maintenance-free bearing unit for the front axle of light trucks, which can effectively solve the problems of tapered roller bearings in the prior art, which require regular lubrication and maintenance, have a high maintenance frequency and high cost, and achieve the effect of maintenance-free bearing unit.

[0006] This application provides a maintenance-free bearing unit for the front axle of a light truck, including: Brake drum; The wheel is fixedly mounted on one side of the brake drum; The bearing housing is fixedly mounted on one side of the wheel disc, located inside the brake drum; The outer bearing is located inside the bearing housing; The inner bearing is located inside the bearing housing. The outer bearing is located on the side closer to the wheel disc, and its outer ring is fixedly installed to the inner side of the bearing housing. The inner bearing is located on the side closer to the wheel hub, and its outer ring is fixedly installed to the inner side of the bearing housing. Both the outer and inner bearings are fitted to the wheel hub.

[0007] As an optional solution to the technical solution in this application, the brake drum and the wheel disc are fixedly installed by bolts or welding.

[0008] As an optional solution to the technical solution in this application, the wheel and the bearing housing are fixed together by bolts.

[0009] As an optional solution to the technical solution in this application, an external oil seal is provided on the side of the bearing housing near the wheel disc to seal the connection between the wheel disc and the bearing housing.

[0010] As an optional solution to the technical solution in this application, an inner oil seal is provided on the side of the bearing housing near the hub to seal the connection between the bearing housing and the hub.

[0011] As an optional solution to the technical solution of this application, both the outer bearing and the inner ring of the inner bearing are provided with perforated holes, which cooperate with the perforated axle of the wheel hub.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: (1) This application uses a bearing housing to fix the brake drum and wheel to the bearing housing. By setting the outer bearing and inner bearing as an insert structure, the traditional tapered roller bearing is replaced. The torque transmission and positioning are achieved by using the cooperation of the flower hole and the flower shaft. This can avoid the phenomenon of bearing collision and corrosion during transportation and storage. Therefore, it effectively solves the problem that tapered roller bearings need to be lubricated and maintained regularly, and the maintenance frequency is high and the cost is high in the prior art. It achieves the effect of maintenance-free bearing unit.

[0013] (2) By setting an external oil seal and an internal oil seal at both ends of the bearing housing, this application forms a double sealing barrier, which solves the problems of external impurities intrusion and grease leakage, and further improves the durability of the bearing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a maintenance-free bearing unit for a light truck front axle disclosed in a preferred embodiment of this application; Figure 2 This is a schematic diagram of the assembly of the wheel disc and bearing housing in a maintenance-free bearing unit for a light truck front axle, as disclosed in a preferred embodiment of this application. Figure 3 This is a schematic diagram of the bearing housing in a maintenance-free bearing unit for a light truck front axle, as disclosed in a preferred embodiment of this application. Figure 4 This is a cross-sectional structural schematic diagram of a maintenance-free bearing unit for a light truck front axle disclosed in a preferred embodiment of this application; The labels in the diagram are as follows: 1. Brake drum; 2. Wheel disc; 3. Bearing housing; 4. Outer bearing; 5. Inner bearing; 6. Outer oil seal; 7. Inner oil seal; Detailed Implementation

[0015] The present application will be further described in detail below with reference to the accompanying drawings.

[0016] Reference Figure 1and Figure 4 This application discloses a maintenance-free bearing unit for the front axle of a light truck, including a brake drum 1. A wheel disc 2 is fixedly mounted on one side of the brake drum 1. A bearing housing 3 is fixedly mounted on the inner side of the wheel disc 2, located inside the brake drum 1. An outer bearing 4 and an inner bearing 5 are mounted inside the bearing housing 3. The outer bearing 4 is located near the wheel disc 2, and its outer ring is fixedly mounted to the inner side of the bearing housing 3. The inner bearing 5 is located near the wheel hub, and its outer ring is fixedly mounted to the inner side of the bearing housing 3. The inner rings of both the outer bearing 4 and the inner bearing 5 are fitted with the wheel hub. Both the outer bearing 4 and the inner bearing 5 have perforated holes, which fit into the perforated axle of the wheel hub.

[0017] By redesigning the original wheel hub and brake drum 1 logic assembly into a fixed structure with wheel disc 2, brake drum 1, and bearing housing 3, the original integrated wheel hub structure is changed to an assembly of wheel hub plus brake drum 1, wheel disc 2, and bearing housing 3. Compared with the traditional integrated wheel hub structure, by setting the outer bearing 4 and inner bearing 5 as an insert structure, the traditional tapered roller bearing is replaced. The torque transmission and positioning are achieved by using the cooperation of the perforated hole and perforated shaft, which can avoid bearing collisions and corrosion during transportation and storage, ensuring the long life and stability of the bearing unit. No periodic adjustment and maintenance are required. The dual bearing layout of outer bearing 4 and inner bearing 5 improves the support stability. Combined with the protection of the bearing housing 3, the impact of the external environment on the bearing is reduced, and the maintenance-free effect is improved.

[0018] Reference Figure 1 The brake drum 1 and the wheel disc 2 are fixed together by bolts or welding.

[0019] By selecting high-strength anti-loosening bolts or using welding for fixing, an integrated structure of wheel disc 2 and brake drum 1 is formed, which can improve the overall structure and load-bearing capacity, and solve the problem that brake drum 1 and wheel disc 2 are difficult to integrally form through casting process.

[0020] Reference Figure 2 The wheel 2 and the bearing housing 3 are fixed together by bolts.

[0021] By using high-strength anti-loosening bolts for fixing, an integral structure of wheel disc 2 and bearing housing 3 is formed, which solves the problem that wheel disc 2 and bearing housing 3 are difficult to integrally form through casting process.

[0022] Reference Figure 3 and Figure 4 An external oil seal 6 is provided on the side of the bearing housing 3 near the wheel 2 to seal the connection between the wheel 2 and the bearing housing 3.

[0023] The outer oil seal 6 is made of fluororubber and fits tightly to the connection between the bearing housing 3 and the wheel disc 2. It can effectively block dust, mud and water and lubricating oil leakage generated during operation, prevent impurities from entering the bearing housing 3 and causing wear or corrosion to the outer bearing 4 and inner bearing 5, and ensure the stability of bearing operation.

[0024] Reference Figure 3 and Figure 4 An inner oil seal 7 is provided on the side of the bearing housing 3 near the hub to seal the connection between the bearing housing 3 and the hub.

[0025] The inner oil seal 7 and the outer oil seal 6 form a double sealing protection, further preventing external impurities from entering the bearing housing 3 and contacting the outer bearing 4 and the inner bearing 5. At the same time, it prevents the leakage of grease inside the outer bearing 4 and the inner bearing 5, ensuring that the inner bearing 5 and the outer bearing 4 are in a good lubrication state for a long time, and achieving the goal of maintenance-free operation.

[0026] In summary, the maintenance-free bearing unit for the front axle of a light truck disclosed in this application is used by first installing the outer bearing 4 and the inner bearing 5 into the bearing housing 3, and sealing them with the outer oil seal 6 and the inner oil seal 7. Then, the assembled bearing housing 3 is fixed to the wheel disc 2 with bolts, and the brake drum 1 is fixed to the outside of the wheel disc 2, forming a stable connection assembly. When the vehicle wheel hub is inserted, the hub's axle fits tightly with the flower holes of the inner rings of the outer bearing 4 and the inner bearing 5, realizing torque transmission and radial positioning. During vehicle operation, the outer bearing 4 and the inner bearing 5 operate in a good lubrication and sealing environment, eliminating the need for periodic preload adjustment or grease replenishment as required by traditional tapered roller bearings, greatly reducing maintenance costs and extending the service life of components.

[0027] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A maintenance-free bearing unit for the front axle of a light truck, characterized in that, Include: Brake drum (1); The wheel (2) is fixedly mounted on one side of the brake drum (1); The bearing housing (3) is fixedly installed on one side of the wheel disc (2) and located inside the brake drum (1); An outer bearing (4) is disposed on the inner side of the bearing housing (3); The inner bearing (5) is located inside the bearing housing (3); The outer bearing (4) is located on the side near the wheel disc (2), and the outer ring of the outer bearing (4) is fixedly disposed with the inner side of the bearing housing (3). The inner bearing (5) is located on the side near the wheel hub, and the outer ring of the inner bearing (5) is fixedly disposed with the inner side of the bearing housing (3). The inner rings of both the outer bearing (4) and the inner bearing (5) are fitted with the wheel hub.

2. The maintenance-free bearing unit for the front axle of a light truck according to claim 1, characterized in that: The brake drum (1) and the wheel disc (2) are fixed together by bolts or welding.

3. The maintenance-free bearing unit for the front axle of a light truck according to claim 1, characterized in that: The wheel (2) and the bearing housing (3) are fixed together by bolts.

4. The maintenance-free bearing unit for the front axle of a light truck according to claim 1, characterized in that: An external oil seal (6) is provided on the side of the bearing housing (3) near the wheel disc (2) to seal the connection between the wheel disc (2) and the bearing housing (3).

5. The maintenance-free bearing unit for the front axle of a light truck according to claim 1, characterized in that: An inner oil seal (7) is provided on the side of the bearing housing (3) near the hub to seal the connection between the bearing housing (3) and the hub.

6. The maintenance-free bearing unit for the front axle of a light truck according to claim 1, characterized in that: The inner rings of the outer bearing (4) and the inner bearing (5) are both provided with perforated holes, which are matched with the perforated axle of the hub.

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