Elevator Safety Clamp Control Device Using Elastic Energy Storage
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Solution Overview
Problem
Existing elevator safety devices face challenges in construction, installation, operational control, safety reliability, and manufacturing cost, which can lead to inadequate protection during abnormal operations such as overspeed or exceeding the limit height.
Innovation Solution
An elevator safety clamp control device that includes an operating portion for releasing kinetic energy to engage the safety clamp with the guide rail, a control portion to manage the operating portion's states based on detected parameters, and a power portion to reset the clamp, utilizing elastic energy storage and a motor for efficient and rapid engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing elevator safety devices are used, then basic safety function is provided, but safety reliability is insufficient during abnormal operations
Solution Approach 1:
The operating portion stores kinetic energy in advance through the elastic energy storage component during normal operation. When an abnormal condition occurs, this pre-stored energy is immediately released to actuate the safety clamp, eliminating the delay associated with starting a motor and ensuring rapid response for enhanced safety reliability.
Solution Approach 2:
The invention extracts the motor from the safety clamp actuation system and replaces it with a spring-based elastic energy storage component. This removal of the motor simplifies the device structure while improving reliability by eliminating components that could fail during emergency operation.
2Speed
If motor-based actuation is used, then controlled operation is achieved, but response time is delayed during emergencies
Solution Approach 1:
The elastic energy storage component accumulates kinetic energy during normal elevator operation. When overspeed or abnormal conditions are detected, this pre-stored energy is instantly released to actuate the safety clamp, providing immediate response without the time delay required for motor startup and acceleration.
Solution Approach 2:
The invention skips the motor startup phase entirely by using stored elastic energy to directly and rapidly actuate the safety clamp. This rushes through the critical emergency response phase, achieving clamping action in the shortest possible time during overspeed events.
3Reliability
If complex safety devices are used, then safety function is improved, but manufacturing cost increases
Solution Approach 1:
The invention removes the motor from the safety clamp system, replacing it with a simpler elastic energy storage component. This extraction of the complex motor mechanism reduces manufacturing costs while maintaining safety function through the use of straightforward mechanical spring-based actuation.
Solution Approach 2:
The elastic energy storage component provides a cost-effective alternative to expensive motor-based systems. While the spring mechanism is simple and inexpensive to manufacture, it delivers reliable safety function throughout its service life, offering an economical solution that meets safety requirements without high manufacturing costs.
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
Enhances safety performance by quickly and reliably stopping the elevator in case of overspeed, with improved manufacturability, installation ease, and reduced costs, making it suitable for widespread application in various elevator systems.
Implementation Method 1
the operating portion comprises an elastic energy storage component, and the elevator safety clamp is arranged on a frame structure of the running device and is connected to the elastic energy storage component
Data Source
AI summary
An elevator safety clamp control device, an elevator safety apparatus and an elevator system. The elevator safety clamp control device includes an operating portion arranged on a running device running along an elevator guide rail and connected to an elevator safety clamp, the operating portion release kinetic energy when controlled to enter a second state from a first state of energy storage, for actuating the elevator safety clamp to engage with the elevator guide rail to stop the running device; a control portion configured to control the operating portion to be in the first state, and to control the operating portion to enter the second state from the first state to release kinetic energy when an operating parameter of the running device exceeds a threshold; and a power portion arranged on the running device and connected to the operating portion.