Winch Anti-Locking Structure Using Positioning Sleeves
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Solution Overview
Problem
Prior art winches experience locking issues due to vibration of the belt shaft, which causes the worm wheel to deviate from its original position, preventing normal meshing with the worm and rendering the winch inoperable during bumpy rides.
Innovation Solution
The winch incorporates a support structure with ring-shaped positioning bosses and sleeves that fix the worm wheel within the case body, transferring vibration-induced forces to the case body, ensuring the worm wheel remains meshed with the worm, and includes a U-shaped support and annular protruding shoulder to enhance belt shaft rigidity and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the belt shaft is supported by two supporting parts on the winch support with spline connection, then the winch structure is compact and space usage is small, but the worm wheel cannot be effectively positioned and vibrates with the belt shaft, causing it to deviate from its original position and fail to mesh with the worm normally, resulting in locking
Solution Approach 1:
The patent introduces positioning sleeves as intermediary components between the belt shaft and the worm wheel. These sleeves act as mediators that isolate the worm wheel from the vibrations of the belt shaft, allowing the worm wheel to maintain its original position and mesh properly with the worm while still being driven by the belt shaft through the spline connection.
Solution Approach 2:
The patent segments the connection between the belt shaft and worm wheel by introducing positioning sleeves that separate the driving function from the positioning function. The belt shaft connects to the worm wheel through the spline connection for power transmission, while the positioning sleeves provide independent positional stability, dividing the coupled functions into separate manageable components.
2Device complexity
If the worm wheel is directly connected to the belt shaft through spline, then the structure is simple, but the worm wheel cannot be effectively positioned and deviates under vibration, causing locking
Solution Approach 1:
The positioning sleeves serve as intermediary components that facilitate smooth operation by absorbing and isolating vibrations. They enable the worm wheel to rotate smoothly with reduced friction by preventing vibrational interference from the belt shaft, while maintaining the simplicity of the spline connection for power transmission.
3Adaptability or versatility
If the worm wheel is allowed to vibrate with the belt shaft, then the structure accommodates movement freely, but the worm wheel deviates from its original position and cannot mesh with the worm, causing the winch to lock
Solution Approach 1:
The patent segments the movement accommodation function from the meshing stability function. The positioning sleeves accommodate the vibrational movements of the belt shaft independently, while the worm wheel maintains its stable position for reliable meshing with the worm. This segmentation allows the system to handle movement freely without compromising meshing stability.
Solution Approach 2:
The positioning sleeves act as intermediaries that absorb and isolate the vibrational movements. They allow the belt shaft to vibrate and move freely while preventing these movements from being transmitted to the worm wheel, thereby maintaining meshing stability and preventing locking.
Data Source
AI summary
A winch with an anti-locking structure comprises a support and a worm wheel, the two sides of the worm wheel are provided with a ring-shaped left positioning boss and a ring-shaped right positioning boss which protrude outward, the left positioning boss is sleeved with a left positioning sleeve, the right positioning boss is sleeved with a right positioning sleeve, and the outer circumferential surface of the left positioning boss is gaplessly sleeved with a circular hole wall of the left positioning sleeve, the outer circumferential surface of the left positioning sleeve is gaplessly sleeved with an inner hole of the case body, the outer circumferential surface of right positioning boss is gaplessly sleeved with a circular hole wall of the right positioning sleeve, the outer circumferential surface of the right positioning sleeve is gaplessly sleeved with the inner hole of the case body.