Telescopic Elevator Apron Damping and Locking
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Solution Overview
Problem
Existing telescopic elevator car aprons suffer from noise pollution and mechanical wear due to frequent use, leading to short maintenance intervals and potential operator injury during extension movements.
Innovation Solution
A three-part telescopic car apron with a damping element to prevent rapid extension, allowing manual extension only when necessary, and a locking device that can be unlocked by actuating a single unlocking element, along with a mechanical connection between unlocking elements to prevent tilting and blocking of telescopic elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If telescopic apron is pushed together into retracted position by car movement, then shaft pit depth is reduced, but noise pollution and mechanical wear increase
Solution Approach 1:
The patent introduces a damping element that dynamically controls the retraction speed of the telescopic apron panels. The damping element allows the panels to move at a controlled, reduced speed during retraction, transforming the harmful high-speed impact into a controlled motion that minimizes noise and mechanical stress while still achieving the retracted position for reduced shaft pit depth.
Solution Approach 2:
The damping element acts as an intermediary between the moving telescopic panels and the shaft floor. This intermediary component absorbs and dissipates the kinetic energy of the moving panels, preventing direct high-impact contact with the shaft floor and reducing both noise pollution and mechanical wear on the panels.
2Length of stationary object
If telescopic apron is pushed together by car movement, then shaft pit depth is reduced, but mechanical wear increases leading to short maintenance intervals
Solution Approach 1:
The damping element dynamically regulates the retraction velocity of the telescopic panels, converting rapid high-stress motion into controlled low-stress motion. This dynamic speed control significantly reduces mechanical wear on the panel components and connection elements, thereby extending maintenance intervals while maintaining the ability to retract to minimal depth.
Solution Approach 2:
The damping element provides beforehand cushioning by being pre-installed in the retraction path of the telescopic panels. This cushioning element is positioned to absorb and dissipate energy before the panels complete their retraction, preventing high-impact contact and reducing cumulative mechanical wear that would otherwise occur with repeated full-speed retraction cycles.
3Reliability
If multiple locking elements are used to secure telescopic panels, then safety is improved, but operation complexity increases
Solution Approach 1:
The patent merges multiple locking elements into a single integrated locking mechanism. Instead of requiring separate operation of multiple independent locking elements, the design combines them so that a single unlocking action simultaneously releases all locking elements, maintaining safety through multiple locking points while simplifying operation to a single action.
Solution Approach 2:
The unlocking mechanism is designed with multi-functionality, serving both as a safety release and an operational control. A single unlocking element performs the dual function of releasing multiple locking points and initiating the controlled retraction sequence, thereby maintaining high safety standards through multiple locks while keeping the interface simple and easy to operate.
4Speed
If rapid extension movement is allowed, then response time is improved, but operator safety is compromised
Solution Approach 1:
The damping element dynamically controls the extension speed of the telescopic panels, allowing rapid response when needed while automatically reducing speed during operations that could pose safety risks. The damping mechanism adapts the motion speed based on the operational context, maintaining fast response capability while preventing dangerous rapid movements that could injure operators.
Solution Approach 2:
The damping element serves as a safety intermediary between the motor-driven retraction system and the telescopic panels. It mediates the force transmission, allowing the system to maintain high response capability through the drive mechanism while the damping element ensures that the actual panel movement occurs at controlled, safe speeds that protect operators from injury.
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 solution reduces noise pollution, minimizes mechanical wear, and ensures operator safety by preventing rapid and dangerous extension movements, thus extending maintenance intervals and enhancing safety features.
Implementation Method 1
wird durch eine Dämpfungseinrichtung gebremst
Data Source
Figure 1~2
Figure 3~4
AI summary
The three-part telescopic apron (1), for an elevator cabin, has three telescopic sections (10-12). It has a manual locking action and a damper (4) to brake the movement from a retracted to an extended position. When retracted, two sections overlap the base section.