I-Shaped Side Plates with Serrated Flanges for Hammer Tool Assemblies
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Solution Overview
Problem
Existing hammer tool assemblies experience wear and deformation of side plates and bolts due to impact and side loads, leading to reduced efficiency and increased machine downtime, as current designs lack robustness in preventing these issues.
Innovation Solution
The hammer tool assembly features I-shaped side plates with serrated flange members and strategically positioned blocks and mounting bores, which provide enhanced rigidity and stability, along with serrations to secure mechanical fasteners, preventing wear and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional side plates with C-shaped cross section are used, then the hammer can be manufactured with simpler structure, but the side plates are prone to wear and deformation under impact and side loads
Solution Approach 1:
The side plates are designed with an I-shaped cross section instead of the traditional C-shaped cross section. This asymmetric I-shape provides superior resistance to bending and deformation under side loads while maintaining manufacturing feasibility, directly resolving the contradiction between strength and structural simplicity.
Solution Approach 2:
Flange members with serrations are added to the outer periphery of the side plates, extending perpendicular to the main axes. This dimensional addition creates a more robust fastening system that prevents wear and deformation at critical stress points, enhancing strength without significantly complicating the overall structure.
2Reliability
If mechanical fasteners are used to couple side plates to power cell, then the assembly can be easily manufactured and assembled, but the bolts experience fatigue and failure under impact and side loads
Solution Approach 1:
The flange members incorporate serrations that work in conjunction with mechanical fasteners to create a composite fastening system. The serrations distribute loads and prevent rotational movement, while the mechanical fasteners provide secure attachment, together creating a more reliable connection that resists fatigue under impact and side loads.
Solution Approach 2:
The flange members act as intermediary elements between the side plates and the mechanical fasteners. They provide a reinforced interface that distributes stresses and prevents direct load concentration on the fasteners, thereby reducing fatigue and improving reliability while maintaining ease of manufacture.
3Adaptability or versatility
If side plates are designed to withstand side loads in confined spaces, then the hammer can operate in restricted environments, but the side plates are still subject to bending and deformation
Solution Approach 1:
The I-shaped cross section of the side plates provides asymmetric strength distribution that is optimized for resisting side loads in confined space operations. This shape maintains structural stability under lateral forces while allowing the hammer to operate effectively in restricted environments.
Solution Approach 2:
The serrations on the flange members create a textured surface that enhances grip and distribution of lateral forces. This curved, serrated geometry helps dissipate side loads more effectively, maintaining structural stability during operations in confined spaces where side loads are prevalent.
Data Source
AI summary
A hammer tool assembly for a machine is provided. A hammer tool assembly includes a power cell, a tool and a frame assembly. The frame assembly includes a first side plate and a second side plate. The hammer tool assembly includes a flange member extending from an outer periphery of an outer wall of the first and second side plates. The flange member includes a plurality of serrations that extend from the outer periphery of the outer wall of at least one of the first and second side plates. The hammer tool assembly also includes a plurality of blocks provided in surrounding contact with the power cell and an inner wall of the first and second side plates respectively.