Excavator Lip Wear Member Stabilization Against Lateral Movement
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Solution Overview
Problem
Conventional wear member attachment systems for excavator lips fail to adequately prevent lateral movement, leading to wear and damage due to side loads during excavation, as they only restrict large movements while allowing smaller movements that cause damage over time.
Innovation Solution
A wear member stabilization system that includes stabilization abutments on the excavator lip, which are slid into recesses in the wear members, preventing lateral movement by engaging with opposing surfaces and projections, thereby enhancing the attachment and reducing wear and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wear member attachment systems are used, then the wear members can be attached to the excavator lip, but lateral movement of the wear members occurs due to side loads, leading to wear and damage
Solution Approach 1:
The attachment system is divided into multiple functional components: a base structure welded to the lip, adjustable stabilization members that can be positioned independently, and wear members with specific engagement features. This segmentation allows each component to address specific aspects of the attachment problem, particularly lateral stabilization.
Solution Approach 2:
The stabilization members are pre-positioned and adjusted before the wear members are fully installed. This preliminary action ensures that the lateral movement constraints are already in place, preventing wear and damage from occurring during the attachment process itself.
2Device complexity
If wear members are allowed to move laterally, then the attachment system is simpler, but wear and damage occur due to side loads during excavation
Solution Approach 1:
Stabilization members act as intermediary elements between the base structure and the wear members. These intermediaries provide the necessary lateral constraint without requiring a completely complex integrated structure, thus balancing simplicity with durability.
Solution Approach 2:
The stabilization members are made adjustable, allowing the lateral constraint parameters to be modified based on specific application requirements. This adjustability provides flexibility without significantly increasing the overall device complexity.
3Duration of action of stationary object
If stabilization abutments are added to prevent lateral movement, then wear and damage are reduced, but the attachment system becomes more complex
Solution Approach 1:
Instead of making the wear members themselves complex with integrated stabilization features, the invention inverts the approach by providing simple stabilization members that attach to a basic base structure. This separates the stabilization function from the wear member, keeping each component relatively simple.
Solution Approach 2:
The stabilization members are designed to be self-adjusting and self-positioning through their engagement with the base structure and wear members. This self-service capability reduces the need for complex adjustment mechanisms while still providing effective lateral constraint.
Data Source
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AI summary
A wear member stabilization system can include a wear member having recesses formed therein on opposing sides of an excavator lip receiving slot, the recesses receiving therein respective stabilization abutments which protrude outwardly from respective opposing inner and outer sides of the lip. A method of stabilizing a wear member on an excavator lip can include welding stabilization abutments to respective inner and outer sides of the lip, sliding the wear member onto the excavator lip, thereby engaging the stabilization abutments with respective recesses formed in the wear member, the stabilization abutments contacting lateral sides of the recesses between a forward end of the excavator lip and an opening extending through the excavator lip, thereby limiting lateral movement of the wear member relative to the excavator lip.