Anti-fall Mechanism for Lifting Transport Apparatus
Solution Overview
Problem
Existing lifting transport equipment, such as hoists and elevators, are prone to material container falls due to broken synchronous belts or chains, especially at high lifting heights, posing safety risks to workers and causing equipment damage.
Innovation Solution
An anti-fall mechanism is introduced, comprising a conveying platform, linkage, elastic mechanism, limit switch, and self-locking mechanism. When the lifting belt is operational, the elastic mechanism is compressed, and the self-locking mechanism is unlocked. Upon belt breakage, the elastic mechanism resets, triggering the self-locking mechanism to lock the conveying platform, preventing falls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synchronous belts or chains are used for lifting, then lifting function is achieved, but equipment may break causing material container falls
Solution Approach 1:
The patent applies preliminary anti-action by pre-configuring a self-locking mechanism that automatically activates when the lifting belt breaks. The elastic mechanism pre-stores energy in a compressed state, ready to immediately trigger the locking action upon belt failure, preventing the harmful effect of container falls before they can occur
Solution Approach 2:
The self-locking mechanism is pre-positioned and pre-loaded through the compressed elastic mechanism during normal operation. When the belt breaks, the pre-positioned locking components are immediately activated by the elastic mechanism's reset, enabling rapid response without requiring complex real-time detection or control systems
2Reliability
If elastic mechanism is used to detect belt breakage, then safety response is achieved, but device complexity increases
Solution Approach 1:
The elastic mechanism serves dual functions: it normally maintains the self-locking mechanism in an unlocked state during operation, and automatically triggers the locking action when the belt breaks. This self-service approach eliminates the need for separate sensors, controllers, and power systems, reducing overall device complexity while maintaining high reliability
Solution Approach 2:
The elastic mechanism acts as an intermediary between the lifting belt and the self-locking mechanism. It translates the physical state of the belt (tensioned during operation, slack when broken) into corresponding states of the locking mechanism (unlocked during operation, locked when broken), providing a simple mechanical mediation that avoids complex electronic control systems
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
The anti-fall mechanism effectively secures the conveying platform to the frame when the lifting belt breaks, preventing material container falls and enhancing safety performance.
Implementation Method 1
The elastic mechanism is arranged between the conveying platform and the lifting belt, where one end of the elastic mechanism is connected to the first coupler, and the other end of the elastic mechanism is pressed by the lifting belt. When the lifting belt breaks, the elastic mechanism is reset to drive the first coupler to move
Data Source
AI summary
An anti-fall mechanism and a lifting transport apparatus are disclosed. The anti-fall mechanism includes a conveying platform, a linkage, an elastic mechanism, a limit switch and a self-locking mechanism. The conveying platform is installed on a lifting belt. The linkage includes a first coupler, a second coupler and two rockers, where two ends of the first coupler are rotationally coupled to two ends of the second coupler, respectively, via the rockers. The elastic mechanism is arranged between the conveying platform and the lifting belt, where one end of the elastic mechanism is connected to the first coupler, and the other end of the elastic mechanism is pressed by the lifting belt. The limit switch is arranged on the second coupler. The self-locking mechanism is arranged on the conveying platform and capable of locking and securing the conveying platform to a frame of the lifting transport apparatus.