Elevator UCMP Test Method Using Unbalanced Torque
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Solution Overview
Problem
Existing testing methods for unintended car movement protection devices in elevators require longer test times due to the need to move the elevator car, which increases operational inefficiency.
Innovation Solution
A testing method that involves moving the elevator car to a position enabling floor releveling, simulating an opened door state, and using unbalanced torque to move the car during the testing process, thereby reducing test time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric motor of the traction machine is driven to move the car for testing, then the UCMP device operation can be checked, but the test time becomes longer
Solution Approach 1:
The patent uses a simulation mode where the control device creates a virtual opened-door state without physically opening the doors. This copying of the critical condition (opened door state) allows testing the UCMP device's response to unintended movement without requiring actual door opening, thereby reducing test time while maintaining verification reliability
Solution Approach 2:
The patent performs preliminary positioning of the car to a specific floor position before initiating the UCMP test. By pre-positioning the car and pre-configuring the simulation parameters, the actual testing phase can proceed more quickly without requiring time-consuming setup and adjustment during the test execution
2Reliability
If the car is moved to test the UCMP device, then the protection function can be verified, but operational efficiency decreases
Solution Approach 1:
The control device automatically manages the entire testing process including car positioning, simulation state configuration, test execution, and result verification. This self-service capability eliminates the need for manual intervention and extensive operational adjustments, thereby maintaining higher operational efficiency while ensuring thorough protection function verification
Solution Approach 2:
The patent replaces the mechanical action of physically opening doors with an electronic simulation of the opened-door state through the control device. This substitution of mechanical operations with electronic control reduces physical manipulation time and maintains operational efficiency while achieving the same testing objective
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
This method significantly reduces the test time for unintended car movement protection devices, improving operational efficiency and safety during testing.
Implementation Method 1
checking an operation of the unintended car movement protection device by making the car in the closed door state move by unbalanced torque in accordance with the power cut-off command signal
Data Source
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AI summary
A testing method for an unintended car movement protection device for an elevator, which can shorten the time required for performing the operation test, is disclosed. The testing method includes: moving a car (100) to a position where a floor releveling operation is enabled; making an unintended car movement protection device operate for testing; enabling the floor releveling operation by an elevator control device (108) to control the car by way of a command signal from a control device (1) of the unintended car movement protection device while the control device of the unintended car movement protection device simulatively sets an opened door detection state in which a car door (110) or a landing door (109) is detected to be opened and a power cut-off command signal to be outputted to an electric motor (105) to drive the car; performing the floor releveling operation by way of the elevator control device in such a closed door state that the car door and the landing door are being closed; and making the car in the closed door state move by unbalanced torque in accordance with the power cut-off command signal when the car lands on a releveled floor through the floor releveling operation.