Self-Locking Gear Mechanism with Brake Member to Prevent Overheating
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Solution Overview
Problem
Conventional gearing arrangements suffer from overheating due to direct friction during self-locking, leading to reduced service life, and lack versatility in self-locking force adjustment to accommodate different loads.
Innovation Solution
A self-locking mechanism comprising a casing, self-locking gear, and brake member, where the brake member releases or brakes the self-locking gear based on direction of rotation, preventing direct friction and allowing variable self-locking force adjustment through gear ratio changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking structure is provided on the transmission gear to enable self-locking, then self-locking function is achieved, but the transmission gear is heated up due to friction which shortens service life
Solution Approach 1:
A separate self-locking gear is introduced as an intermediary component that meshes with the transmission gear. The brake member acts on this self-locking gear rather than directly on the transmission gear, preventing direct friction between the brake member and transmission gear teeth. This intermediary mechanism achieves self-locking while protecting the transmission gear from heat damage and extending its service life.
2Adaptability or versatility
If existing gearing arrangements use an invariable self-locking force, then结构简单性 is maintained, but versatile self-locking demands cannot be satisfied
Solution Approach 1:
The gear ratio between the transmission gear and self-locking gear is made changeable, which dynamically adjusts the self-locking force output. By varying the speed ratio through different gear configurations, the system can adapt to different load requirements while maintaining a relatively simple overall structure. This dynamic adjustment capability provides versatility without excessive complexity.
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
Extends the service life of gearing arrangements by preventing overheating and enables flexible self-locking force adjustment to meet diverse load requirements, enhancing structural flexibility and application range.
Implementation Method 1
the brake member refers to a torsion spring sleeved over the rotary part, the torsion spring elastically pressing against the rotary part
Implementation Method 2
preventing direct friction between the brake member and the gearing arrangement and thus preventing heating-up of the gearing arrangement
Data Source
AI summary
A self-locking mechanism for a gearing arrangement, a gearing arrangement, an actuator, and a lifting platform, which relate to the technical field of lifting tables. The self-locking mechanism includes a casing, a self-locking gear, and a brake member, the self-locking gear meshing with the gearing arrangement, the brake member being connected between the casing and the self-locking gear; in a case where the gearing arrangement pushes the self-locking gear forwardly, the brake member releases the self-locking gear, and in a case where the gearing arrangement pushes the self-locking gear reversely, the brake member brakes the self-locking gear.