A sugarcane wheel machine front wheel arrangement

Abstract

The utility model discloses a wheeled sugarcane machine front wheel arrangement structure, including frame and height adjusting oil cylinder still including with the frame parallelly arranged rotating shaft, one end of rotating shaft is fixedly connected frame through upper swing arm, and the other end is fixedly connected frame through lower swing arm, and frame, upper swing arm, lower swing arm and rotating shaft constitute quadrilateral mechanism, still fixedly installed with wheel hub axle on rotating shaft, height adjusting oil cylinder is connected with upper swing arm and frame respectively. The utility model provides a wheeled sugarcane machine front wheel arrangement structure, has solved the problem that the sugarcane harvester front wheel tire camber changes with the frame height and leads to the tire abnormal wear or the drum bag etc.

Description

Technical Field

[0001] This utility model relates to the field of sugarcane harvester technology, and in particular to a front wheel arrangement structure for a wheeled sugarcane harvester. Background Technology

[0002] With rising labor costs both domestically and internationally, the proportion of agricultural harvesting using automated machinery is increasing. Sugarcane, a major raw material for sugar production, is also increasingly harvested mechanically. When harvesting sugarcane by machine, the header needs to be adjusted vertically to accommodate the height of the sugarcane baskets. In wheeled sugarcane harvesters, adjusting the header height causes changes in the wheel camber angle, with a maximum camber angle reaching 7°. This can easily lead to abnormal tire wear, tire bulges, and even tire blowouts during operation, affecting the overall safety of the machine.

[0003] The existing wheeled sugarcane harvester uses a hydraulic cylinder single swing arm structure for the front wheel, as detailed in the attached document. Figure 4 As shown, the hub shaft is fixed to the outer cylinder of the height adjustment cylinder, the hub is mounted on the hub shaft, the wheel is fixed to the hub, and the cylinder and the swing arm are connected by a ball bearing. The above structure is prone to the following problems:

[0004] 1. Because the wheel offset is fixed to the cylinder barrel, the bending moment caused by the weight of the entire machine is applied to the cylinder, which can easily lead to oil leakage at the cylinder seals and even bending of the cylinder rod. This results in high maintenance costs.

[0005] 2. When the height adjustment cylinder extends or retracts, the wheel and the outer cylinder are relatively fixed, causing the wheel camber angle to change with the cylinder stroke. Since the extension stroke needs to reach more than 300mm, the wheel camber angle cannot simultaneously meet all stroke positions, leading to abnormal tire wear, bulges, tire blowouts and other malfunctions under extreme working conditions. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides a front wheel arrangement structure for a wheeled sugarcane harvester, which solves the problems of abnormal tire wear or bulges caused by excessive camber angle of the front wheel tires due to changes in the frame height.

[0007] The present invention achieves the above objectives by adopting the following technical solution:

[0008] A front wheel arrangement structure for a wheeled sugarcane machine includes a frame and a height adjustment cylinder, and also includes a rotating shaft arranged parallel to the frame. One end of the rotating shaft is fixedly connected to the frame via an upper swing arm, and the other end is fixedly connected to the frame via a lower swing arm. The frame, the upper swing arm, the lower swing arm, and the rotating shaft form a quadrilateral mechanism. A wheel hub axle is also fixedly installed on the rotating shaft. The height adjustment cylinder is connected to the upper swing arm and the frame respectively.

[0009] Preferably, it further includes a steering knuckle arm and a steering cylinder, wherein the steering knuckle arm is connected to the steering cylinder and the rotating shaft, respectively.

[0010] Preferably, the hub is mounted on the hub axle, and the wheel is fixedly mounted on the hub.

[0011] Preferably, the height adjustment cylinder is connected to the upper swing arm and the vehicle frame by a pin.

[0012] Preferably, the frame, the upper swing arm, the lower swing arm, and the rotating shaft form a parallelogram mechanism.

[0013] The beneficial effects of this utility model are:

[0014] This utility model's wheeled sugarcane harvester front wheel arrangement structure ensures that the quadrilateral mechanism composed of the frame, upper swing arm, lower swing arm, and rotating shaft maintains a constant vertical angle during the extension and retraction of the height adjustment cylinder. Therefore, the wheel hub angle remains constant, and the camber angle of the front wheels remains unchanged, solving the tire failure problem caused by improper camber angles. Furthermore, the height adjustment cylinder only bears axial force, not bending moment, eliminating the risk of cylinder deformation and resolving issues such as oil leakage due to cylinder bending, thus improving reliability. In the event of future damage to the wheel hub, only the wheel hub needs to be replaced, without replacing the entire cylinder, resulting in low maintenance costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of the front wheel arrangement structure of a wheeled sugarcane machine provided for an embodiment of this utility model;

[0016] Figure 2 An assembly diagram of the front wheel arrangement structure of a wheeled sugarcane machine provided for an embodiment of this utility model;

[0017] Figure 3 A side view of the front wheel arrangement structure of a wheeled sugarcane machine provided for an embodiment of this utility model;

[0018] Figure 4 A schematic diagram of the front wheel structure of an existing wheeled sugarcane harvester, provided for the purposes of this utility model embodiment.

[0019] In the diagram, 1-frame, 2-height adjustment cylinder, 3-rotating shaft, 4-upper control arm, 5-lower control arm, 6-wheel hub shaft, 7-wheel hub, 8-wheel, 9-steering knuckle arm. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-3 The present invention will be described in detail with reference to specific embodiments.

[0021] Please also see Figure 1 , Figure 2 and Figure 3 This utility model provides a front wheel arrangement structure for a wheeled sugarcane harvester, including a frame 1 and a height adjustment cylinder 2. It also includes a rotating shaft 3 arranged parallel to the frame 1. One end of the rotating shaft 3 is fixedly connected to the frame 1 via an upper swing arm 4, and the other end is fixedly connected to the frame 1 via a lower swing arm 5. The frame 1, upper swing arm 4, lower swing arm 5, and rotating shaft 3 form a quadrilateral mechanism. A wheel hub axle 6 is also fixedly mounted on the rotating shaft 3. The height adjustment cylinder 2 is connected to both the upper swing arm 4 and the frame 1.

[0022] In operation, the front wheel arrangement structure of this utility model for a wheeled sugarcane harvester allows the height adjustment cylinder 2 to move up and down during its extension and retraction. This movement drives the upper swing arm 4, which in turn moves the wheel hub axle 6 up and down. During this process, the quadrilateral mechanism composed of the frame 1, upper swing arm 4, lower swing arm 5, and rotating shaft 3 ensures that the angle of the rotating shaft 3 remains constant in the vertical direction. Therefore, the angle of the wheel hub axle 6 remains unchanged, and the camber angle of the front wheel remains constant, solving the tire failure problem caused by an inappropriate camber angle. Furthermore, the height adjustment cylinder 2 only bears axial force, not bending moment, eliminating the risk of cylinder deformation and solving problems such as oil leakage due to cylinder bending, thus improving reliability. If the wheel hub axle 6 is damaged later, only the wheel hub axle 6 needs to be replaced, without replacing the entire cylinder, resulting in low maintenance costs.

[0023] In this embodiment, the wheel hub 7 is mounted on the wheel hub axle 6, and the wheel 8 is fixedly mounted on the wheel hub 7. During the up-and-down movement of the upper swing arm 4 driven by the height adjustment cylinder 2, the camber angle of the wheel 8 remains consistent with the angle of the wheel hub axle 6.

[0024] The front wheel arrangement structure of the wheeled sugarcane machine in this embodiment also includes a steering knuckle arm 9 and a steering cylinder. The steering knuckle arm 9 is connected to the steering cylinder and the rotating shaft 3 respectively, so as to drive the rotating shaft 3 to rotate left and right through the steering cylinder, thereby driving the wheel 8 to rotate left and right.

[0025] In this embodiment, the height adjustment cylinder 2 is connected to the upper swing arm 4 and the frame 1 by a pin.

[0026] In this embodiment, the frame 1, the upper swing arm 4, the lower swing arm 5, and the rotating shaft 3 form a parallelogram mechanism.

[0027] This invention changes the single swing arm structure to a quadrilateral double swing arm structure. Regardless of the wheel 8's position, the camber angle of the wheel 8 remains constant, ensuring camber stability and thus solving the problems of abnormal tire wear and bulges. Furthermore, the wheel hub axle 6 is fixed to the rotating shaft 3, and the height adjustment cylinder 2 is installed separately from the wheel hub axle 6. This eliminates the bending moment on the height adjustment cylinder 2, solving the problem of easy oil leakage and improving reliability. The separate installation also allows for independent maintenance, enhancing ease of repair.

[0028] Although the present invention has been described in detail above with specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A front wheel arrangement structure for a wheeled sugarcane harvester, comprising a frame and a height adjustment cylinder, characterized in that, It also includes a rotating shaft arranged parallel to the frame. One end of the rotating shaft is fixedly connected to the frame via an upper swing arm, and the other end is fixedly connected to the frame via a lower swing arm. The frame, the upper swing arm, the lower swing arm, and the rotating shaft form a quadrilateral mechanism. A wheel hub axle is also fixedly installed on the rotating shaft. The height adjustment cylinder is connected to the upper swing arm and the frame respectively.

2. The front wheel arrangement structure of a wheeled sugarcane machine according to claim 1, characterized in that, It also includes a steering knuckle arm and a steering cylinder, wherein the steering knuckle arm is connected to the steering cylinder and the rotating shaft respectively.

3. The front wheel arrangement structure of a wheeled sugarcane machine according to claim 1, characterized in that, The wheel hub is mounted on the wheel hub axle, and the wheel is fixedly mounted on the wheel hub.

4. The front wheel arrangement structure of a wheeled sugarcane machine according to claim 1, characterized in that, The height adjustment cylinder is connected to the upper swing arm and the vehicle frame by a pin.

5. The front wheel arrangement structure of a wheeled sugarcane machine according to claim 1, characterized in that, The frame, the upper swing arm, the lower swing arm, and the rotating shaft form a parallelogram mechanism.

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