Rear drive axle of tractor

Abstract

The utility model relates to the technical field of tractors, in particular to a tractor rear drive axle which comprises a rear axle box body, a half axle shell is arranged on the side face of the rear axle box body, the end of the half axle shell is fixedly connected with a final transmission mechanism, and the outer surface of the half axle shell is fixedly connected with a parking brake and a service brake respectively. The side face of the half shaft shell is fixedly connected with a hub reduction gear. A final transmission mechanism, a service brake and a parking brake are changed from a built-in mode into an external mode, maintenance and adjustment of a rear drive axle are facilitated to the maximum extent, compared with a final transmission mechanism of a conventional tractor, the final transmission mechanism can obtain larger bearing capacity, the tractor is more practical in use, and the service life of the tractor is prolonged. Compared with a disc brake of a conventional tractor, the hydraulic pressing caliper disc brake can provide larger braking torque and is more convenient and rapid to adjust and maintain, and a reliable foundation is provided for the tractor to achieve an electronic hand brake through the spring pressing hydraulic releasing caliper disc brake.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a rear drive axle of a tractor. Background Art

[0002] A tractor is a self-propelled power machine used to pull and drive machinery for various mobile tasks. It can also be used for stationary work. It consists of three main components: an engine, a chassis, and electrical equipment. Tractors are categorized by function and purpose into agricultural, industrial, and special-purpose types. Tractors are further divided into wheeled, crawler, boat-shaped, and self-propelled chassis types based on their structural type.

[0003] Traditional tractors still have certain shortcomings when in use. The final transmission mechanism, service brake, and parking brake of the traditional tractor rear drive axle are all built-in when in use, which makes it inconvenient to inspect and adjust the rear drive axle, limiting the practicality and convenience of the tractor. In addition, the braking torque of the traditional tractor rear drive axle is small, which limits the applicability of the tractor rear drive axle. Therefore, we propose a tractor rear drive axle. Utility Model Content

[0004] The purpose of the utility model is to provide a rear drive axle for a tractor, so as to solve the problems mentioned in the above background art that the final transmission mechanism, service brake and parking brake of the conventional rear drive axle of a tractor are all built-in when in use, which makes it inconvenient to inspect and adjust the rear drive axle, resulting in limited practicality and convenience of the tractor, and the conventional rear drive axle of a tractor has a small braking torque, which limits the applicability of the rear drive axle of the tractor.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A rear drive axle of a tractor comprises a rear axle case, a side of the rear axle case is provided with a half-axle housing, the end of the half-axle housing is fixedly connected to the final drive mechanism, the outer surface of the half-axle housing is respectively fixedly connected to the parking brake and the service brake, the side of the half-axle housing is fixedly connected to the wheel-side reducer, the surface of the wheel-side reducer is fixedly connected to the brake disc, and the parking brake and the service brake share the same brake disc.

[0007] As a preferred solution of the present invention, a rear drive wheel is mounted on the surface of the final transmission mechanism, and the final transmission mechanism is arranged on the side of the parking brake and the service brake.

[0008] As a preferred solution of the present invention, two half-shaft housings are provided, the two half-shaft housings are positioned opposite to each other, and the two half-shaft housings are of the same model.

[0009] As a preferred solution of the present invention, the service brake is a hydraulically clamped caliper disc brake, and the parking brake is a spring-loaded hydraulically released caliper disc brake.

[0010] As a preferred solution of the present invention, the parking brake and the service brake are respectively arranged on both sides of the half-axle housing, and the brake disc is circular in shape.

[0011] As a preferred solution of the present invention, the shape of the rear axle box is rectangular, and the material of the rear axle box is stainless steel.

[0012] As a preferred solution of the present invention, the two half-axle housings have the same size, and the two half-axle housings are fixedly connected to the rear axle box.

[0013] As a preferred solution of the present invention, the wheel-side reducer is arranged on the side of the half-axle housing, and the shape of the wheel-side reducer is circular.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the present invention, by changing the final drive mechanism, service brake, and parking brake from built-in to external, the inspection and adjustment of the rear drive axle are facilitated to the greatest extent. In addition, compared with the final drive mechanism of a conventional tractor, the final drive mechanism can obtain a greater load-bearing capacity, making the tractor more practical when in use.

[0016] 2. In the present invention, by arranging the coordinated use of the parking brake and the service brake, the hydraulic clamping caliper disc brake can provide a greater braking torque than the disc brake of a conventional tractor, and adjustment and maintenance are also more convenient and quick. The use of the spring-loaded hydraulic release caliper disc brake provides a reliable basis for realizing the electronic handbrake of the tractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural diagram of the rear axle box of the utility model;

[0019] Figure 3 This is a schematic structural diagram of the final drive mechanism and parking brake of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the half-shaft housing of the utility model.

[0021] In the figure: 1. Final drive mechanism; 2. Parking brake; 3. Axle shaft housing; 4. Rear axle box; 5. Service brake; 6. Brake disc; 7. Wheel-side reducer. DETAILED DESCRIPTION

[0022] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] For examples, see Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A rear drive axle of a tractor includes a rear axle case 4, a side of which is provided with a half-shaft housing 3, the end of which is fixedly connected to a final drive mechanism 1, the outer surfaces of which are respectively fixedly connected to a parking brake 2 and a service brake 5, a side of which is fixedly connected to a wheel-side reducer 7, a surface of which is fixedly connected to a brake disc 6, and the parking brake 2 and the service brake 5 share the same brake disc 6.

[0025] In this embodiment, Figure 1 and Figure 2 As shown, the rear drive wheel is mounted on the surface of the final drive mechanism 1, and the final drive mechanism 1 is arranged on the side of the parking brake 2 and the service brake 5. Two half-shaft housings 3 are provided, and the two half-shaft housings 3 are positioned opposite to each other. The two half-shaft housings 3 are of the same model. The service brake 5 is a hydraulically clamped caliper disc brake, and the parking brake 2 is a spring-loaded hydraulically released caliper disc brake.

[0026] Among them, by changing the final transmission mechanism 1, the service brake 5, and the parking brake 2 from built-in to external, the maintenance and adjustment of the rear drive axle are facilitated to the greatest extent. In addition, compared with the final transmission mechanism of a conventional tractor, the final transmission mechanism 1 can obtain a greater load-bearing capacity, making the tractor more practical when in use.

[0027] In this embodiment, Figure 3 and Figure 4 As shown, the parking brake 2 and the service brake 5 are respectively arranged on both sides of the half-axle housing 3, the brake disc 6 is circular in shape, the rear axle housing 4 is rectangular in shape, the rear axle housing 4 is made of stainless steel, the two half-axle housings 3 have the same size, and the two half-axle housings 3 are fixedly connected to the rear axle housing 4. The wheel-side reducer 7 is arranged on the side of the half-axle housing 3, and the wheel-side reducer 7 is circular in shape.

[0028] Among them, by setting the coordinated use of the parking brake 2 and the service brake 5, the hydraulic clamping caliper disc brake can provide a larger braking torque than the disc brake of a conventional tractor, and adjustment and maintenance are also more convenient and quick. The use of the spring-loaded hydraulic release caliper disc brake provides a reliable foundation for the tractor to realize the electronic handbrake.

[0029] The working process of the present utility model is as follows: when the rear drive axle of the tractor designed using the present scheme is in operation, the half-axle housing 3 is fixed to the side of the rear axle box 4, and then the final transmission mechanism 1 is fixed to the side end of the half-axle housing 3, the parking brake 2, the service brake 5 and the wheel-side reducer 7 are fixed to the surface of the half-axle housing 3, and then the brake disc 6 is fixed to the surface of the wheel-side reducer 7. Through the coordinated use of the final transmission mechanism 1, the parking brake 2, the service brake 5, the wheel-side reducer 7 and the brake disc 6, the inspection and adjustment of the rear drive axle can be facilitated to the greatest extent, a greater load-bearing capacity can be obtained, a greater braking torque can be provided, and adjustment and maintenance are also more convenient and quick, which provides a reliable foundation for the tractor to realize the electronic handbrake, making the tractor more practical when in use.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear drive axle of a tractor, comprising a rear axle box (4), characterized in that: A half-axle housing (3) is provided on the side of the rear axle box (4); the end of the half-axle housing (3) is fixedly connected to the final transmission mechanism (1); the outer surface of the half-axle housing (3) is fixedly connected to the parking brake (2) and the service brake (5); the side of the half-axle housing (3) is fixedly connected to the wheel-side reducer (7); the surface of the wheel-side reducer (7) is fixedly connected to the brake disc (6); the parking brake (2) and the service brake (5) share the same brake disc (6).

2. The rear drive axle of a tractor according to claim 1, characterized in that: A rear drive wheel is mounted on the surface of the final transmission mechanism (1), and the final transmission mechanism (1) is arranged on the sides of the parking brake (2) and the service brake (5).

3. The rear drive axle of a tractor according to claim 1, characterized in that: Two half-shaft housings (3) are provided, the two half-shaft housings (3) are positioned opposite to each other, and the two half-shaft housings (3) are of the same model.

4. The rear drive axle of a tractor according to claim 1, characterized in that: The service brake (5) is a hydraulically clamped caliper disc brake, and the parking brake (2) is a spring-loaded hydraulically released caliper disc brake.

5. The rear drive axle of a tractor according to claim 1, characterized in that: The parking brake (2) and the service brake (5) are respectively arranged on both sides of the half-axle housing (3), and the brake disc (6) is circular in shape.

6. The rear drive axle of a tractor according to claim 1, characterized in that: The rear axle box (4) is rectangular in shape and is made of stainless steel.

7. The rear drive axle of a tractor according to claim 1, characterized in that: The two half-axle housings (3) have the same size, and the two half-axle housings (3) are fixedly connected to the rear axle box (4).

8. The rear drive axle of a tractor according to claim 1, characterized in that: The wheel-side speed reducer (7) is arranged on the side of the half-axle housing (3), and the shape of the wheel-side speed reducer (7) is circular.

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