Steering Knuckle for Steering Axle Assembly of Combine Harvester

Technical Field

The utility model relates to the technical field of vehicle steering axles, and in particular to a steering knuckle for a steering axle assembly of a combine harvester.

Background Art

A combine harvester is a harvesting machine capable of completing operations such as harvesting, threshing, separating stalks, and removing impurities of grain crops in one process, and directly obtaining grain from the field. The steering knuckle is one of the important components in the steering axle assembly of a combine harvester. When the combine harvester performs harvesting operations under various working conditions, the steering knuckle bears the weight of the rear body of the harvester and withstands the torque generated during the steering process, thereby realizing the steering function during the operation of the harvester. Therefore, during a large amount of harvesting work, the steering knuckle may encounter various failure problems, affecting normal production operations.

Contents of the Utility Model

In view of this, the utility model provides a steering knuckle for a steering axle assembly of a combine harvester. By improving the structures and connection methods of the steering swing arm and steering pin shaft of the existing steering knuckle, the strength of the steering knuckle is effectively improved, thereby reducing the risk caused by fracture failure during operation. In order to achieve the above purpose, the utility model provides the following technical solution.

A steering knuckle for a steering axle assembly of a combine harvester, comprising: a steering wheel shaft, a steering vertical shaft, a steering swing arm, and a steering pin shaft. Wherein:

The steering vertical shaft is vertically fixed on the upper surface of one end of the steering wheel shaft. The steering swing arm has a “V”-shaped structure, and an installation hole is formed at the center thereof. The steering vertical shaft passes through the installation hole, and the two are fixedly connected together. Positioning holes are formed at both ends of the steering swing arm. The lower portion of the steering pin shaft is inserted into the positioning hole and fixedly connected thereto. A step is formed on the outer wall of the lower end of the steering pin shaft. The upper end of the steering pin shaft passes through the positioning hole and extends above the steering swing arm, and the step abuts against the lower surface of the steering swing arm.

Further, a reinforcing sleeve is tightly sleeved on the steering pin shaft, and the reinforcing sleeve is located on the upper surface of the steering swing arm, so as to alleviate the problem of fracture of the steering pin shaft.

Further, reinforcing ribs are provided on both sides of the side wall of the steering wheel shaft, and the lower surface of the steering swing arm is fixed on the reinforcing ribs, thereby increasing the strength of the steering swing arm.

Further, one end of the steering wheel shaft is formed as a cubic block structure, and the steering vertical shaft is vertically fixed on the upper surface of the cubic block structure. Two reinforcing ribs are provided and are respectively vertically fixed on two symmetrical side walls of the cubic block structure.

Further, both the steering vertical shaft and the steering pin shaft are located on the upper surface of the steering swing arm, and the steering vertical shaft and the steering pin shaft are arranged in parallel.

Compared with the prior art, the utility model has the following beneficial effects:

First, the steering swing arm of the steering knuckle for the steering axle assembly of the combine harvester in the utility model is improved into a “V”-shaped structure with an installation hole at the center, and the steering swing arm is sleeved onto the steering vertical shaft through the installation hole and then fixedly connected thereto. This overcomes the problem in the existing steering knuckle where the steering swing arm consists of two parts separately welded and fixed on both sides of the steering wheel shaft, which easily causes fracture under stress.

Second, the utility model provides a protruding step on the side wall of the lower end of the steering pin shaft, and the upper end of the steering pin shaft passes through the positioning hole so that the step abuts against the lower surface of the steering swing arm. This effectively overcomes the problem that the lower end of the existing steering pin shaft is directly welded to the steering swing arm and is prone to weld cracking.

Third, through practical exploration, the utility model sleeves a reinforcing sleeve onto the steering pin shaft. The reinforcing sleeve provides good reinforcement for the weld seam between the steering pin shaft and the steering swing arm, effectively solving the problem that the weld seam between the steering pin shaft and the steering swing arm is prone to fracture under stress.

Description of Drawings

The accompanying drawings forming part of the specification are used to provide a further understanding of the utility model. The schematic embodiments and descriptions of the utility model are used to explain the utility model and do not constitute improper limitations to the utility model.

Figure 1 is a schematic structural diagram of the steering knuckle before improvement in the following embodiments.

Figure 2 is a schematic structural diagram of the improved steering knuckle in the following embodiments.

Figure 3 is a schematic structural diagram of the improved steering knuckle from another angle in the following embodiments.

Reference numerals in the figures represent respectively:
1 — Steering wheel shaft
2 — Steering vertical shaft
3 — Steering swing arm
4 — Steering pin shaft
5 — Positioning hole
6 — Step
7 — Reinforcing sleeve
8 — Reinforcing rib

Detailed Description

For convenience of description, terms such as “upper”, “lower”, “left”, and “right” appearing in the utility model merely indicate consistency with the directions shown in the drawings themselves, and do not limit the structure. These terms are only used for convenient description and simplification of the utility model, rather than indicating or implying that the referred devices or components must have specific orientations or be constructed and operated in specific orientations. Therefore, they should not be understood as limitations on the utility model. The technical solution of the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 2 and 3, an example of a steering knuckle for a steering axle assembly of a combine harvester is shown, comprising: a steering wheel shaft 1, a steering vertical shaft 2, a steering swing arm 3, and a steering pin shaft 4. Wherein:

One end of the steering wheel shaft 1 is formed as a cubic block structure, and the steering vertical shaft 2 is vertically fixed on the upper surface of the cubic block structure. The steering swing arm 3 has a “V”-shaped structure, and an installation hole is formed at the center thereof. The steering vertical shaft 2 passes through the installation hole and is fixedly connected thereto. By improving the steering swing arm 3 into a “V”-shaped structure with an installation hole at the center, and sleeving the steering swing arm 3 onto the steering vertical shaft 2 through the installation hole before fixed connection, the problem in the existing steering knuckle (see Figure 1), in which the steering swing arm 3 consists of two parts separately welded and fixed on both sides of the steering wheel shaft 1 and is prone to fracture under stress, is overcome.

Both ends of the steering swing arm 3 are provided with positioning holes 5. The lower portion of the steering pin shaft 4 is inserted into the positioning hole 5 and fixedly connected thereto. A step 6 is formed on the outer wall of the lower end of the steering pin shaft 4. The upper end of the steering pin shaft 4 passes through the positioning hole 5 and extends above the steering swing arm 3, and the step 6 abuts against the lower surface of the steering swing arm 3. Both the steering vertical shaft 2 and the steering pin shaft 4 are located on the upper surface of the steering swing arm 3, and are arranged in parallel. In this embodiment, by providing the protruding step 6 on the side wall of the lower end of the steering pin shaft 4, and allowing the upper end of the steering pin shaft 4 to pass through the positioning hole 5 so that the step 6 abuts against the lower surface of the steering swing arm 3, the problem that the lower end of the existing steering pin shaft 4 is directly welded to the steering swing arm and prone to weld cracking is effectively overcome.

Referring to Figures 2 and 3, in another embodiment, in the steering knuckle for the steering axle assembly of the combine harvester illustrated above, a steel reinforcing sleeve 7 is tightly sleeved on the steering pin shaft 4, and the reinforcing sleeve 7 is located on the upper surface of the steering swing arm 3. Through practical exploration, this embodiment sleeves the reinforcing sleeve 7 onto the steering pin shaft 4. The reinforcing sleeve 7 provides good reinforcement for the weld seam between the steering pin shaft 4 and the steering swing arm 3, effectively solving the problem that the weld seam between the steering pin shaft 4 and the steering swing arm 3 is prone to fracture under stress.

Referring to Figures 2 and 3, in another embodiment, in the steering knuckle for the steering axle assembly of the combine harvester illustrated above, reinforcing ribs 8 are provided on both sides of the side wall of the steering wheel shaft 1, and the lower surface of the steering swing arm 3 is fixed on the reinforcing ribs 8, thereby increasing the strength of the steering swing arm 3. Two reinforcing ribs 8 are provided and are respectively vertically fixed on two symmetrical side walls of the cubic block structure.

Finally, it should be noted that any modifications, equivalent substitutions, improvements, and the like made within the spirit and principles of the utility model shall fall within the protection scope of the utility model. Although specific embodiments of the utility model have been described above with reference to the accompanying drawings, these descriptions do not limit the protection scope of the utility model. Those skilled in the art should understand that various modifications or variations made based on the technical solutions of the utility model without creative effort shall still fall within the protection scope of the utility model.