Modular Hydraulic Thumb for Excavator Bucket
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Solution Overview
Problem
Existing excavator thumb attachments lack versatility and efficiency in gripping and releasing materials, particularly in adapting to different sizes and shapes of buckets and materials being handled.
Innovation Solution
A modular thumb system for excavators, comprising a thumb body that rotates with respect to the excavator arm and a tine kit that can be welded to the thumb body, featuring a channel for receiving actuating arms or actuators, and a pin-up attachment point for easy storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional welded or bolted thumb assembly is used, then structural strength is maintained, but adaptability to different bucket sizes and material types deteriorates
Solution Approach 1:
The thumb assembly is divided into modular components including interchangeable tine kits, adjustable actuating arms, and separable connection elements. This segmentation allows different tine configurations to be attached to the same thumb body, enabling adaptation to various material types and bucket sizes while maintaining structural integrity through standardized connection interfaces.
Solution Approach 2:
The thumb assembly incorporates adjustable actuating arms with variable length configurations and interchangeable tine kits that can be swapped based on application requirements. This dynamic reconfigurability allows the same thumb body to adapt to different operational conditions, bucket sizes, and material types without compromising structural strength.
2Ease of manufacture
If a fixed configuration thumb is used, then manufacturing simplicity is maintained, but gripping and releasing efficiency for varied materials deteriorates
Solution Approach 1:
The thumb body is designed as a universal platform that can accommodate multiple tine kit configurations and actuating arm arrangements. This multi-functionality allows a single thumb assembly to efficiently handle various material types and gripping requirements, improving productivity without requiring multiple specialized thumb assemblies, thus maintaining manufacturing simplicity.
3Adaptability or versatility
If multiple attachment points are added for versatility, then adaptability to different configurations improves, but device complexity increases
Solution Approach 1:
The actuating arms are designed with nested or telescopic capabilities, allowing compact storage when not in use and easy adjustment to different lengths. This nesting approach provides multiple effective attachment point configurations without proportionally increasing overall device complexity, as the adjustment mechanisms are integrated into the existing thumb body structure.
Data Source
AI summary
A modular thumb for a bucket of an excavator arm having a thumb body rotating with respect to the excavator arm. The thumb body has a pair of spaced elongate members and a main body extending between the elongate members. The main body has a bucket side and a non-bucket side. A channel on the non-bucket side and along the elongate members receives at least one of: an actuating arm of a progressive link kit and an actuator of the excavator arm. A tine kit may be welded to the main body.