Synchronized Claw Puller for Secure Multi-Size Ring Removal
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Solution Overview
Problem
Conventional pullers for removing annular elements from axles are hazardous due to accidental disengagement of claws, limited suitability for varying sizes, and require multiple pullers of different sizes, making them expensive and inconvenient.
Innovation Solution
A puller design featuring a collar with slots and pivotal connectors, synchronized by a movable synchronizer and extensible abutting element, allowing for adjustable claw angles and easy replacement of claws, ensuring safe and efficient detachment of annular elements regardless of size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If claws are not interconnected, then each claw can be engaged independently, but accidental disengagement occurs making the operation hazardous
Solution Approach 1:
The patent connects multiple claws through a common pivot connection to a yoke, making them move together as a unified system. This ensures that all claws engage and disengage simultaneously, eliminating the hazard of accidental disengagement while maintaining operational ease.
Solution Approach 2:
The patent employs a synchronizing mechanism with lugs that move along slots in the claws, providing mechanical feedback that ensures all claws remain synchronized. This feedback system automatically corrects any tendency toward unequal positioning, maintaining reliability during operation.
2Reliability
If lugs of synchronizer are inserted in slots of claws, then pivoting of claws is synchronized, but the pivoting angle is limited to a small angle
Solution Approach 1:
The patent designs the synchronizing mechanism with movable lugs that travel along slots, allowing the system to adapt dynamically to different operating conditions. The slots are positioned and angled to permit greater pivoting range while maintaining synchronization, enabling the claws to accommodate larger annular elements.
Solution Approach 2:
The patent resolves the angle limitation by changing the geometric arrangement of the synchronizing elements. The slots are oriented at specific angles and the lugs move in a combination of radial and axial directions, effectively increasing the available pivoting angle through three-dimensional motion rather than simple rotational movement.
3Adaptability or versatility
If adjusters are located between claws and collar, then the angle of pivoting of claws can be adjusted, but the adjusters might be disengaged from the claws
Solution Approach 1:
The patent removes the separate adjusters and their associated disengagement risks by integrating the angle adjustment function directly into the synchronizing mechanism. The slots in the yoke provide built-in adjustment capability without requiring separate adjuster components that could become disengaged.
Solution Approach 2:
The patent combines the synchronizing function and the angle adjustment function into a single integrated mechanism. The movable lugs traveling along slots simultaneously achieve synchronization and provide adjustable pivoting angles, eliminating the need for separate adjusters and their inherent disengagement problems.
4Adaptability or versatility
If multiple pullers of various sizes are purchased, then different sized annular elements can be detached, but it becomes expensive and inconvenient
Solution Approach 1:
The patent designs a universal puller with adjustable claws and synchronizing mechanism that can accommodate various sizes of annular elements. The slots in the yoke and movable lugs allow the same puller to be adjusted for different operating conditions, eliminating the need to maintain multiple specialized pullers and reducing both cost and inventory complexity.
Data Source
AI summary
A puller includes a collar, claws, a synchronizer and an abutting element. The collar includes slots and pivotal connectors located corresponding to the slots. The claws are pivotally connected to the pivotal connectors. Each of the claws includes a protuberance movable in and along a corresponding one of the slots. The synchronizer includes a receiving portion for receiving the protuberances. The synchronizer is movable in the collar between an opening position and a closing position. In the opening position, the synchronizer opens the claws by the protuberances. In the closing position, the synchronizer closes the claws by the protuberances. The abutting element is extensible from the collar.