Indexable Piercing Tip Assembly for Demolition Shear Wear Reduction
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Solution Overview
Problem
Conventional heavy-duty demolition shears lack an efficient and replaceable piercing tip that can effectively switch between piercing and shearing edges, leading to reduced operational efficiency and increased wear on the equipment.
Innovation Solution
The development of an indexable piercing tip for demolition shears, featuring a first and second body that sandwich the nose portion of the jaw, allowing for selective attachment in two operative positions. Each position presents different piercing and shearing edges, enabling the tip to be rotated 180° for edge switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional demolition shears use fixed piercing tips, then the structure is simple, but the operational efficiency decreases and wear on equipment increases
Solution Approach 1:
The piercing tip is divided into two separate bodies (first body and second body), each with distinct piercing edges and shearing edges. This segmentation allows the tip to be disassembled and reconfigured, enabling operators to switch between different edge configurations based on operational needs, thereby improving productivity while maintaining manageable complexity through modular design
Solution Approach 2:
The piercing tip design allows dynamic reconfiguration by rotating the first body relative to the second body to present different combinations of piercing and shearing edges. This dynamic adaptability enables the same tip assembly to serve multiple functions throughout its service life, improving operational efficiency without requiring multiple complete tip replacements
2Duration of action of stationary object
If conventional shears use non-replaceable piercing edges, then the manufacturing process is simple, but the equipment lifespan is reduced due to increased wear
Solution Approach 1:
The design enables selective replacement of worn edges by allowing the first and second bodies to be separated and reconfigured. When one set of edges becomes worn, the tip can be rotated 180 degrees to present fresh edges, effectively recovering the remaining useful life of the component without discarding the entire piercing tip assembly, thus extending equipment lifespan
Solution Approach 2:
The piercing tip allows change in functional parameters by rotating the first body relative to the second body, presenting different combinations of piercing and shearing edges. This parameter change capability enables the same physical component to adapt to different operational requirements throughout its extended service life, delaying the need for complete replacement
3Object-affected harmful factors
If conventional shears lack indexable piercing tips, then the device complexity is low, but the wear on equipment increases
Solution Approach 1:
The piercing tip assembly achieves multi-functionality through the ability to rotate the first body relative to the second body, presenting different combinations of piercing and shearing edges. This universal design allows a single tip assembly to perform multiple functions (piercing, shearing, and combinations thereof) that would otherwise require multiple separate tips, reducing equipment wear through distribution of usage across multiple edges while keeping the overall device complexity manageable
Data Source
AI summary
An indexable piercing tip mounts to a nose portion of one of the jaws of a heavy-duty demolition shears so as to enclose and protect top, bottom, front, and two opposing side surfaces of the nose portion during use of the shears. The piercing tip has a first operative position in which a first set of piercing and shearing edges of the piercing tip are presented for use. When the first set gets dull or worn, the piercing tip can be rotated/indexed 180° degrees so as to present a second set of piercing and shearing edges of the piercing tip for use.