Tooth Adaptor Boss Geometry for Excavation Bucket Wear Reduction
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Solution Overview
Problem
Excavation equipment, such as earth-working buckets, face significant wear issues due to friction and digging forces, leading to frequent replacements of teeth and tooth adaptors, which increases equipment downtime.
Innovation Solution
A tooth adaptor with a U-shaped body and a boss with an arcuate geometry is designed to be mounted on the leading edge of excavation equipment, featuring a cylindrical section surface and a contact surface with a flaring section to enhance stability and prevent movement, along with a connector assembly that includes an endless screw and wedge member for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tooth adaptors are used, then the structure is simple and easy to manufacture, but wear occurs frequently leading to increased downtime
Solution Approach 1:
The tooth adaptor is divided into multiple functional segments: a U-shaped body for mounting, a boss for positioning, contact surfaces for stabilization, and a cavity for receiving the leading edge. This segmentation allows each part to perform its specific function optimally, improving overall reliability and wear resistance while maintaining manufacturing feasibility through modular design
Solution Approach 2:
The boss with arcuate geometry is nested within the U-shaped body, and the leading edge is received within the cavity defined by the legs. This nested structure maximizes space utilization and ensures proper positioning and stabilization of components, enhancing wear resistance without significantly increasing overall structural complexity
2Reliability
If the tooth adaptor is designed with stabilization features, then movement is prevented and reliability improves, but manufacturing complexity increases
Solution Approach 1:
The boss is designed with arcuate geometry and cylindrical section surfaces, and the contact surfaces feature curved profiles. These curved geometries naturally conform to the leading edge and provide multi-directional stabilization through contact at multiple points. The curvature enables stable mounting while using standard machining operations, maintaining manufacturing ease
Solution Approach 2:
The contact surfaces are designed with specific geometric parameters including arcuate profiles and cylindrical section surfaces with defined radii. These parameter specifications ensure optimal contact and stabilization while being achievable through conventional manufacturing processes. The flaring section angle and boss dimensions are optimized to provide stability without excessive complexity
3Productivity
If frequent replacement of wear members is performed, then equipment can continue operating, but downtime increases and productivity decreases
Solution Approach 1:
The tooth adaptor is designed with pre-configured stabilization features including the boss, contact surfaces, and cavity geometry that ensure proper alignment and secure mounting before operation begins. This preliminary configuration prevents excessive wear and misalignment during operation, reducing the frequency of replacements and minimizing downtime for maintenance
Solution Approach 2:
The tooth adaptor and leading edge are designed as replaceable wear members that can be easily swapped out when worn. The simplified yet effective stabilization design ensures that even as these components wear, they maintain functionality for longer periods, and when replacement is needed, the process is quick and straightforward, minimizing productivity loss
Data Source
AI summary
A tooth adaptor for a leading edge of excavation equipment has a body having legs defining a cavity, the body adapted to be mounted to the excavation equipment by the leading edge received in the cavity. A tooth interface is at a leading end of the body, a contact surface of the body being defined in the cavity and being configured to be opposite a leading surface of the leading edge and in contact with the leading surface. A boss projects in a trailing direction from the contact surface, wherein at least one of contact surfaces including a slot extending in a leading-to-trailing direction of the tooth adaptor. The slot may define a flaring section in which sidewalks) of the slot diverges from the leading-to-trailing direction. A trailing surface(s) at an end of the legs has a flaring geometry flaring away from the tooth interface.