Guided Clevis Pin Press Tool for Corroded Brake Slack Adjusters
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Solution Overview
Problem
Existing clevis pin removal tools are prone to failure due to minor misalignment, especially in inaccessible and corroded brake slack adjusters of trucks and heavy vehicles, leading to inefficiency and safety issues.
Innovation Solution
A press tool comprising a base assembly, drive pin, and guide sleeve, where axial rotation of the drive pin causes linear displacement, ensuring precise alignment and removal of the clevis pin through housing and sleeve guide surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional press tool is used to remove clevis pins, then the tool structure is simple, but the tool fails due to misalignment in inaccessible and corroded brake slack adjusters
Solution Approach 1:
A guide sleeve is introduced as an intermediary component between the drive pin and the clevis pin. The guide sleeve includes a guide surface that receives a corresponding guide surface on the base assembly, ensuring proper alignment. This intermediary element transfers and maintains alignment information from the base assembly to the drive pin, preventing misalignment failures in difficult-to-access locations.
Solution Approach 2:
The press tool is divided into distinct functional segments: a base assembly with a housing, a drive pin with threaded engagement, and a guide sleeve with alignment surfaces. This segmentation allows each component to perform its specific function independently while working together as a system, with the guide sleeve specifically addressing the alignment problem without requiring complete redesign of the entire tool.
2Adaptability or versatility
If the drive pin is made adjustable to accommodate misalignment, then alignment flexibility is improved, but the device complexity increases
Solution Approach 1:
The guide sleeve is pre-positioned on the base assembly with its guide surface already configured to match the base assembly's guide surface. This preliminary alignment preparation eliminates the need for complex real-time adjustment mechanisms during operation. The threaded engagement of the drive pin with the base assembly provides inherent adjustability while the pre-configured guide surfaces ensure proper alignment is maintained throughout the pressing operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates reliable and efficient removal of clevis pins from brake slack adjusters, even in challenging conditions, by maintaining linear movement and alignment during the process.
Implementation Method 1
a drive pin (122) engaging the base assembly (120) such that axial rotation of the drive pin (122) causes linear displacement of the drive pin (122) relative to the base assembly (120)
Implementation Method 2
The housing guide surface (158) engages the guide sleeve (124). The sleeve guide surface (194) engages the drive pin (122)
Data Source
AI summary
A press tool comprises a base assembly defining a housing guide surface, a drive pin, and a guide sleeve defining a sleeve guide surface. The drive pin engages the base assembly such that axial rotation of the drive pin causes linear displacement of the drive pin relative to the base assembly. The housing guide surface engages the guide sleeve. The sleeve guide surface engages the drive pin.