Quick-Release Fastener Structure for Machine-Arm Force Resistance
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Solution Overview
Problem
Existing quick-release fastener devices for attaching tools to machine arms, such as hydraulic shovels, lack sufficient resistance to the forces exerted by the tools, leading to potential breakage and reduced service life.
Innovation Solution
The device incorporates prominences and abutments on the base plate to enhance structural integrity, with prominences projecting from the front and abutments from the lower face, ensuring better resistance to forces and limiting wear, and includes a notch to prevent soil or waste introduction during locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the base plate structure is simplified, then the device complexity is reduced, but the resistance to forces exerted by the bucket decreases
Solution Approach 1:
The base plate is segmented into multiple functional zones: a first zone with a first structure for resisting forces from the bucket, and a second zone with a second structure for resisting forces from the rocker actuator. This segmentation allows each zone to be optimized for its specific force direction, improving overall strength without requiring the entire base plate to be overly complex.
Solution Approach 2:
Different regions of the base plate are given different structural characteristics tailored to their specific force resistance requirements. The first zone has structural features optimized for bucket force resistance, while the second zone has features optimized for rocker actuator force resistance, creating local quality variations that enhance overall performance.
2Reliability
If the locking plate is made more robust, then the reliability of the locking mechanism improves, but the wear on the locking part increases
Solution Approach 1:
The locking plate is designed as a movable component that can slide relative to the base plate, transitioning between locked and unlocked positions. This dynamic design allows the locking mechanism to engage and disengage smoothly, reducing wear on contact surfaces while maintaining reliable locking through the spring means that bias the plate into the locked position.
3Strength
If the coupling hook is made stronger, then the strength of the connection improves, but the device complexity increases
Solution Approach 1:
The coupling hook is integrated directly into the base plate structure rather than being a separate component. This merging of the coupling hook with the base plate simplifies the overall device structure while maintaining connection strength, as the hook benefits from the structural support of the base plate without adding separate structural elements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The enhanced design provides increased resistance to forces, preventing breakage and improving safety and service life by ensuring secure attachment and preventing improper unlocking due to impacts or vibrations.
Implementation Method 1
a slidably mounted locking plate biased by spring means
Data Source
AI summary
Quick-release fastener device for attaching a tool to an arm of a machine including a first part and a second part, the first part including a base plate having front and rear edges, a coupling hook or pin protruding from the lower face of the base plate, and a locking hook protruding from the upper face of the base plate. The second part includes a pin or hook to couple to the coupling hook or pin of the first part; a base plate; and a slidable locking plate, the locking hook of the first part passes through the slidable locking plate to hook to an edge of the opening once the locking plate has slid to lock the device. Two prominences, one right and one left, project from the front of the base plate of the first part.