Rear Axle Braking Mechanism for a Corn Harvester

Technical Field

The utility model relates to components of harvesting machinery, in particular to a rear axle braking mechanism for a corn harvester.

Background Art

In recent years, the planting area of crops such as corn has continuously expanded. However, harvesting is still mainly carried out manually, resulting in low production efficiency. With social development and technological progress, mechanical harvesting will inevitably replace manual operations.

Conventional corn harvesters are generally equipped with braking devices only on the front axle. During harvesting operations, when emergency braking is required, relying solely on the front axle braking is insufficiently stable and may easily lead to tail swinging. In addition, braking time fluctuates significantly and cannot meet operational requirements.

Summary of the Utility Model

The purpose of the utility model is to provide a rear axle braking mechanism for a corn harvester, which enables stable braking and improved braking performance.

The technical solution adopted is as follows:

The rear axle braking mechanism for a corn harvester comprises a steering axle frame, a steering assembly, a steering tie rod, and a wheel assembly. Both ends of the steering axle frame are rotatably connected with the steering assembly.

The steering assembly includes a steering arm, a steering kingpin, and a steering spindle arranged on the steering arm. The steering arm is connected to the lower end of the rear axle body via the steering kingpin, and is rotatably connected to the wheel assembly on the outer side of the steering axle frame via the steering spindle.

Both ends of the steering tie rod are respectively fixed to mounting holes at the ends of the steering arms.

The wheel assembly includes a hub body mounted at the front end of the steering spindle. Wheel bolts are evenly distributed on the hub body. A brake drum is mounted on the outer side of the hub body via bolts. A mudguard is installed on the inner side of the brake drum and is fixedly connected with the hub body. A flange for mounting the hub body is provided on the outer side of the brake drum.

Two semi-circular brake shoes are arranged on the inner side of the brake drum. The brake shoes are mounted on the mudguard via spring pins. A brake wheel cylinder and a spring are connected between the two brake shoes, and one end of the spring is connected to the spring pin.

Beneficial Effects

The rear axle braking mechanism for a corn harvester provided by the utility model has a simple structure and is easy to install. During braking, the phenomenon of tail swinging caused by uneven braking is significantly reduced, braking performance is greatly improved, and the stability and safety during braking are ensured.

Description of Drawings

In the figure:

Steering axle frame

Steering assembly

Steering arm

Steering kingpin

Steering spindle

Steering tie rod

Wheel assembly

Hub body

Wheel bolt

Brake drum

Mudguard

Flange

Brake shoe

Spring pin

Spring

Brake wheel cylinder

Detailed Description

The technical solution of the utility model is further described below in conjunction with the embodiment.

As shown in the figure, the rear axle braking mechanism for a corn harvester includes a steering axle frame (1), a steering assembly (2), a steering tie rod (3), and a wheel assembly (4). Both ends of the steering axle frame (1) are rotatably connected with the steering assembly (2).

The steering assembly (2) includes a steering arm (21), a steering kingpin (22), and a steering spindle (23). The steering arm (21) is connected to the lower end of the steering axle frame (1) via the steering kingpin (22), and is rotatably connected to the wheel assembly (4) via the steering spindle (23). Both ends of the steering tie rod (3) are fixed to mounting holes at the ends of the steering arms (21).

The steering assembly (2) is integrally formed by the steering arm (21), steering kingpin (22), and steering spindle (23), thereby increasing service life and reducing the likelihood of damage during steering.

The wheel assembly (4) includes a hub body (5) mounted at the front end of the steering spindle (23). Wheel bolts (6) are evenly distributed on the hub body (5). A brake drum (7) is mounted on the outer side of the hub body (5) via bolts. A mudguard (8) is installed on the inner side of the brake drum (7) and fixedly connected to the hub body (5). A flange (9) for mounting the hub body (5) is provided on the outer side of the brake drum (7).

Two semi-circular brake shoes (10) are arranged on the inner side of the brake drum (7). The brake shoes (10) are mounted on the mudguard (8) via spring pins (11). A brake wheel cylinder (13) and a spring (12) are connected between the two brake shoes (10), and one end of the spring (12) is connected to the spring pin (11).

When braking is required, the actuating end of the brake wheel cylinder (13) moves outward on both sides, driving the two semi-circular brake shoes (10) to expand outward. The brake shoes (10) contact the brake drum (7), thereby completing the braking action.

When braking is released, the actuating end of the brake wheel cylinder (13) retracts inward, and the two semi-circular brake shoes (10) return to their original positions under the pulling force of the spring (12).

Except for the technical features described in the specification, all other features are well known to those skilled in the art.