Ground Conveyor Wheel Arm Width Adjustment Mechanism
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Solution Overview
Problem
Existing ground conveyors face challenges in maintaining consistent ground clearance due to play and tolerances in wheel arm attachments, particularly when wheel arm width needs to be adjusted, leading to potential contact with the ground when the distance between wheel arms and attachment points increases.
Innovation Solution
The wheel arms are attached to a bearing arm that fits movably into a bearing opening on the frame or load part, with releasable fixing means to secure axial and pivot positions, allowing for adjustment through a clamping device or screw pins, and an eccentric adjustment mechanism for rotational adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the distance between wheel arms and attachment location is increased to accommodate larger wheel arm widths, then the wheel arm width is increased, but the ground clearance decreases due to greater bending and torsion
Solution Approach 1:
The patent implements a movable bearing arm that can be adjusted between different fixed positions rather than being permanently fixed. This allows the system to dynamically adapt the wheel arm width while maintaining proper ground clearance through releasable fixing means that secure the bearing arm in specific positions, eliminating the bending and torsion issues associated with increased distance.
Solution Approach 2:
The patent changes the parameter of wheel arm width by providing multiple predetermined positions for the bearing arm along the frame. By selectively positioning the bearing arm at different locations, the wheel arm width can be adjusted without permanently increasing the distance between attachment points, thus maintaining ground clearance while accommodating different operational requirements.
2Stability of the object's composition
If the wheel arms are permanently attached to the frame through welding to ensure stability, then the connection stability is improved, but the adaptability to change wheel arm width is lost
Solution Approach 1:
The patent segments the connection between the wheel arm and frame by introducing a movable bearing arm with releasable fixing means. This allows the connection to be divided into adjustable segments that can be positioned at different locations, providing both stability when fixed and adaptability when repositioned, unlike permanent welding which creates a single fixed connection.
Solution Approach 2:
The patent transforms the static permanent connection into a dynamic adjustable connection. The bearing arm can be moved to different positions and fixed using fixing means, providing stability when in position while allowing adaptation when repositioned. This dynamic system replaces the permanent weld with a controllable, adjustable connection mechanism.
3Adaptability or versatility
If releasable fixing means are provided to enable removal and adjustment of wheel arms, then the adaptability to change wheel arm width is improved, but the connection stability deteriorates due to play and tolerances
Solution Approach 1:
The patent applies preliminary action by providing multiple predetermined fixed positions for the bearing arm along the frame. The fixing means secure the bearing arm at these pre-established positions, ensuring stability by eliminating play and tolerances that would exist if arbitrary positions were allowed. The positions are predetermined during design to maintain proper geometry and clearance.
Solution Approach 2:
The patent introduces an intermediary bearing arm component that mediates between the wheel arm and the frame. This bearing arm provides a stable mounting point with releasable fixing means, acting as an intermediary that can be securely fixed at predetermined positions. The bearing arm absorbs and compensates for play and tolerances, maintaining connection stability while enabling adaptability.
Data Source
AI summary
Ground conveyor with a drive part with a frame, a load part, which is attached to the frame of the drive part and the height of which is operated on the, if applicable, one load pickup means that can be actuated by a lifting device, furthermore with parallelly distanced wheel arms, which are attached with their rear ends on the frame or the load part and each support a load-bearing wheel with means for changing the distance of the wheel arms (wheel-arm width), wherein a bearing arm is fastened on the rear end of the wheel arms, which extends almost perpendicular to the wheel arm and is received fittingly and moveably in at least one bearing opening of the frame or the load part and fixing means are provided on the frame or load part, with which the axial and pivot position of the bearing arms can be releasably retained.