Agricultural Chassis With Independent Wheel Pivots
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Solution Overview
Problem
Existing agricultural machines face challenges in achieving independent wheel movement in both horizontal and vertical planes within the frame width, leading to increased mechanical load and limitations in adjusting track width, which affects stability and compatibility with uneven terrain.
Innovation Solution
The design features impeller swings movable along the main joint shafts, allowing transverse movement and pivoting, with hydraulic cylinders for adjustable wheel positioning, enabling independent wheel movement and flexible chassis adaptation to terrain irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If impeller swings are attached to the frame via telescopic connection to change track width, then the track width can be adjusted, but the frame is subject to increased mechanical load and the wheels cannot occupy a track width less than the frame width
Solution Approach 1:
The suspension system is divided into independent impeller swing units, each with its own main swing shaft and attachment mechanism to the frame. This segmentation allows each wheel assembly to be adjusted independently without loading the entire frame structure, resolving the contradiction between track width adaptability and frame strength.
Solution Approach 2:
The patent introduces an intermediary attachment mechanism where impeller swings connect to the frame through designated attachment points rather than direct telescopic connection. This intermediary structure distributes and reduces the mechanical load on the frame while still enabling track width adjustment, solving both the load and adaptability issues.
2Ease of manufacture
If impeller swings are attached to the outside of the frame for telescopic movement, then the connection is simple, but the minimum track width is limited by the frame width
Solution Approach 1:
Instead of having the impeller swings attach to the outside of the frame and telescope outward, the patent inverts the approach by allowing impeller swings to move inward along the main swing shafts. The attachment mechanism is designed so that impeller swings can occupy positions within the frame width, enabling track widths less than the frame width while maintaining simple attachment construction.
3Ease of operation
If wheels are suspended by impeller swing with independent horizontal movement, then the wheels can move independently in horizontal plane, but the attachment forces increase mechanical load on the frame
Solution Approach 1:
The patent applies local quality by providing specific attachment points and main swing shafts at strategic locations on the frame. These localized structures are designed to handle the attachment forces from impeller swings, distributing the mechanical load to specific reinforced areas rather than the entire frame, thus enabling independent wheel movement while minimizing overall frame loading.
Data Source
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AI summary
An agricultural machine with a frame that rests on the ground via connecting components and a chassis with running wheels, wherein each running wheel is assigned a wheel pivot and each wheel pivot is independently movable in an upright and/or horizontal plane relative to the frame. To create a compact and lightweight chassis that decouples the running wheels and the frame of the agricultural machine and also allows independent movement of the running wheels in an upright and horizontal plane, with the running wheels able to occupy positions within the width of the frame, it is provided that, with respect to the center of the machine, opposing wheel pivots are arranged in pairs on a continuous, common main pivot shaft extending transversely to the direction of travel.