Universal Backhoe Coupler Pivoting Link Pin Spacing
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Solution Overview
Problem
Existing universal couplers for tractor loader backhoes face difficulties in accommodating different bucket styles due to variations in pin diameter and spacing, often requiring complex mechanisms like sleeve inserts and shims that are easily lost and time-consuming to install.
Innovation Solution
A universal coupler with a first link having a C-shaped slot and a pivotal second link that adjusts between positions to accommodate different bucket styles by aligning mounting holes and spacing, allowing for easy connection of various bucket styles to the articulation joints of a single style work machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sleeve inserts and shims are used to accommodate different pin spacing, then adaptability to different bucket styles is improved, but device complexity increases and parts are easily lost
Solution Approach 1:
The coupler employs a movable second link that can pivot between different positions to accommodate varying pin spacings. This dynamic adjustment mechanism replaces static sleeve inserts and shims, allowing the coupler to adapt to different bucket styles without requiring multiple separate components. The second link's pivotal movement enables the mounting hole spacing to be adjusted dynamically based on the bucket being attached.
2Adaptability or versatility
If sleeve inserts and shims are used to accommodate different pin spacing, then adaptability to different bucket styles is improved, but installation time increases
Solution Approach 1:
The dynamic pivotal movement of the second link allows for quick adjustment between different mounting hole configurations. Instead of requiring time-consuming installation of sleeve inserts and shims, the operator can simply pivot the second link to the appropriate position, significantly reducing the time required to switch between different bucket styles.
3Device complexity
If a fixed mounting hole configuration is used, then device complexity is reduced, but adaptability to different pin spacing is worsened
Solution Approach 1:
The coupler maintains relative structural simplicity while incorporating a dynamic element. The second link's pivotal capability provides adaptability without requiring complex mechanisms. The mounting holes are positioned on the movable second link, allowing the spacing to change dynamically while keeping the overall coupler structure simple and easy to manufacture.
Data Source
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AI summary
A universal coupler for a backhoe assembly in which a first link is pivotally connected to the articulation joints of the backhoe assembly. Mounting holes for a first and third style bucket with equal pin spacing are provided on the first link. A second link is connected to the first position and is pivotal between a first position in which the mounting holes are exposed and a second position in which the second link covers the holes on the first link and provides the mounting hole diameter and pin spacing for a bucket having a greater pin spacing.