Drive Unit Coupling Mechanism for Pallet Jack Attachment
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Solution Overview
Problem
The existing methods for attaching a drive unit to a hand pallet jack or truck require detaching the steered wheels, which complicates the process and reduces workability.
Innovation Solution
A drive unit configuration that includes a coupling mechanism with interlocking grooves and a support frame, allowing attachment to the hand pallet jack or truck without detaching the steered wheels, using a first and second coupling member with vertical and transverse grooves to accommodate the steering axle and support shaft members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the existing attachment method is used, then the drive unit can be attached to the hand pallet jack or truck, but the steered wheels must be detached which complicates the process and reduces workability
Solution Approach 1:
A coupling mechanism is introduced as an intermediary component between the drive unit and the steering axle member. This coupling mechanism includes a first coupling member that attaches to the drive unit and a second coupling member that attaches to the steering axle member, enabling the drive unit to be mounted without detaching the steered wheels from the hand pallet jack or truck.
Solution Approach 2:
The coupling mechanism is divided into multiple detachable components: a first coupling member attached to the drive unit and a second coupling member attached to the steering axle member. These segmented components can be independently assembled and detached, allowing the drive unit to be attached or removed without affecting the steered wheels, thereby simplifying the attachment process and improving workability.
2Productivity
If the coupling mechanism with grooves is used, then the attachment process is simplified and workability is enhanced, but additional coupling members and grooves must be designed and manufactured
Solution Approach 1:
The coupling mechanism is designed with detachable connections between the first and second coupling members, allowing dynamic assembly and disassembly. The grooves (first vertical groove, first transverse groove, second vertical groove, second transverse groove) provide guided alignment and secure engagement when connected, while allowing easy separation when detached, thus improving attachment efficiency without requiring overly complex manufacturing.
Data Source
AI summary
A drive unit includes a drive wheel, a prime mover, a coupling mechanism and a support frame. The coupling mechanism includes first and second coupling members. The first coupling member includes a first opposed surface. The second coupling member includes a second opposed surface opposed to the first opposed surface. The second coupling member is attached to the first coupling member in a detachable manner. The support frame is attached to the coupling mechanism. The support frame supports the drive wheel and the prime mover. The first coupling member includes a first vertical groove and a first transverse groove on the first opposed surface. The second coupling member includes a second vertical groove and a second transverse groove on the second opposed surface. The second vertical groove is opposed to the first vertical groove. The second transverse groove is opposed to the first transverse groove.