Double Cam Taper Lock Connector Pin Wear Adjustment
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Solution Overview
Problem
Conventional ground engaging apparatus requires pounding to install and remove connector pins, leading to safety hazards and accelerated surface interface wear between wear and support members, which causes the wear member to shift and increase abrasion wear.
Innovation Solution
A hammerless connector pin assembly with a tubular sleeve and cam-shaped pin structure that allows for secure installation and adjustment to retighten the wear member on the support member, using a locking mechanism to prevent forward movement and accommodate surface wear, allowing for rotationally adjusted cammed end portions to re-engage the wear member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional connector pins are pounded into place, then secure retention of the wear member is achieved, but safety hazards and operational complexity increase
Solution Approach 1:
The connector pin is divided into multiple sections including a first section with a first cam and a second section with a second cam. Each cam can be independently adjusted to compensate for wear, eliminating the need for pounding while maintaining secure retention through distributed locking points.
Solution Approach 2:
The connector pin incorporates adjustable cam mechanisms that can be rotated to different positions. This dynamic adjustment capability allows the connector to adapt to wear accumulation and maintain secure retention without requiring forceful installation or removal.
2Stability of the object's composition
If the wear member is tightly secured to prevent shifting, then operational stability is improved, but the ability to accommodate surface wear is reduced
Solution Approach 1:
The cam mechanisms are designed to be adjustable during operation. As wear accumulates on the support member nose, the cams can be rotated to new positions that maintain proper engagement, allowing the system to adapt while preserving operational stability.
Solution Approach 2:
The connector pin allows for parameter changes in the form of cam rotation angles. By changing the angular position of the cams, the system compensates for wear-induced dimensional changes in the support member nose, maintaining stable operation throughout the wear cycle.
3Ease of operation
If the connector pin structure is simplified for ease of installation, then ease of operation is improved, but the capability to adjust for wear is reduced
Solution Approach 1:
The connector pin uses rotatable cam mechanisms that can be adjusted with simple rotational motion. This dynamic feature provides wear adjustment capability while maintaining ease of operation, as the cams can be rotated using basic hand tools without complex procedures.
Solution Approach 2:
The connector pin design allows operators to perform wear compensation adjustments themselves during routine maintenance. The cam adjustment mechanism is designed to be user-friendly, enabling field operators to maintain proper engagement without requiring specialized equipment or expertise.
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
Eliminates the need for pounding, reduces safety hazards, and effectively retightens the wear member to prevent further shifting and abrasion wear, enhancing the operational stability and longevity of the ground engaging apparatus.
Implementation Method 1
the outer end portions are rotatable to cause lateral movement of the wear member relative to the support member to thereby retighten the wear member on the support member
Data Source
AI summary
A hammerless connector pin assembly is insertable in the aligned connector openings in telescoped ground engaging wear and support members and is releasably lockable therein. The inserted assembly has opposite end portions that block removal of the wear member from the support member. Each of the two end portions has a laterally projecting cam member disposed thereon which is positioned within opposite ones of the two opposed wear member connector openings. As the interior surface of the wear member becomes worn from use and is able to shift further rearwardly along the support member, the cam members may simultaneously be rotationally adjusted to maintain contact with the wear member to prevent forward movement thereof away from its rearward shifted position, and then locked in their rotationally adjusted positions.