Elevator Buffering Device with Telescopic Height Adjustment
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Solution Overview
Problem
Existing elevator buffering devices require manual adjustment of height for maintenance access, leading to safety risks and inefficiencies, as they must be adjusted before and after maintenance, and do not automatically adapt to different operational states of the elevator system.
Innovation Solution
An elevator buffering device with a multi-stage buffer system, including a body bracket and telescopic push rod mechanism, which automatically adjusts the height of buffering elements in response to normal or abnormal elevator operation signals, utilizing a control element to communicate with the elevator controller for precise height adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the buffering device height is adjusted manually before and after maintenance, then maintenance personnel can access the hoistway pit, but safety risks remain during the adjustment periods and the process is inefficient
Solution Approach 1:
The buffering device employs a dynamic height adjustment mechanism that automatically changes the buffer height based on the elevator's operational state. The drive mechanism moves the buffer between a first height (for maintenance access) and a second height (for normal operation), eliminating the need for manual adjustment and ensuring safety during transitions.
Solution Approach 2:
The buffering device performs self-adjustment through automatic control based on elevator operational signals. The control element receives signals from the elevator controller and autonomously actuates the drive mechanism to adjust buffer height, eliminating human intervention and the associated safety risks during adjustment periods.
2Adaptability or versatility
If the buffering device is adjusted to higher height for maintenance access, then enough risk-protection space is provided, but the hoistway pit depth requirement cannot be met during normal operation
Solution Approach 1:
The buffering device transitions from a static to a dynamic configuration, with the buffer height being variable rather than fixed. The drive mechanism enables the buffer to occupy different vertical positions, allowing the system to meet hoistway pit depth requirements during normal operation while providing adequate clearance during maintenance.
Solution Approach 2:
The buffering device is divided into multiple positional states (first height and second height), with the buffer element being able to segment its position vertically. This segmentation allows the system to optimize for different operational requirements at different times without compromising either normal operation or maintenance access.
3Adaptability or versatility
If manual adjustment of buffer height is required, then the buffering device can adapt to different states, but the adjustment process is time-consuming and inefficient
Solution Approach 1:
The buffering device achieves self-adjustment through automatic control based on elevator operational signals. The control element receives signals from the elevator controller and autonomously actuates the drive mechanism, eliminating manual intervention and significantly improving adjustment efficiency and productivity.
Solution Approach 2:
The system implements feedback control where the control element monitors elevator operational signals and automatically adjusts the buffer height in response. This closed-loop control ensures the buffer is at the correct height for the current operational state without requiring manual assessment or adjustment, improving both adaptability and efficiency.
Data Source
AI summary
An elevator buffering device and an elevator system. The elevator buffering device includes a multi-stage buffer including: a body bracket; and a plurality of buffering elements mounted on the body bracket; wherein each of the buffering elements is at different heights when they are driven to operating positions in a vertical direction; a drive mechanism including: a power source for powering the drive mechanism; and a telescopic push rod pivotally connected to the body bracket; and a control element for controlling a telescopic length of the telescopic push rod of the drive mechanism so that one of the plurality of buffering elements on the body bracket is driven to the operating position.