Elevator Weighing System

Abstract

The invention relates to an elevator weighting system, comprising a lift car, a counter-weight, hauling cables, an impedance detection sensor and a control cabinet, a plurality of hauling cables are arranged; the lift car is connected with the counter-weight through the hauling cables by a traction machine and a guide wheel; the hauling cables are used as measured resistors to be connected with the impedance detection sensor in series; the impedance detection sensor detects the impedance change of each hauling cable; the impedance variable quantities of the hauling cables are overlaid and are converted into a signal accepted by the control cabinet after being subjected to internal operation; the control cabinet automatically computes the corresponding lift car load according to the signal input; and the traction machine is controlled to output moment which meets the requirement. According to the elevator weighting system, the elevator hauling cables are skillfully used a constituent part of the elevation weighting system, the cost is reduced, the hoistway space can be saved, the measurement precision is improved, the system structure is concise, the mounting and maintenance are easy, the weighting zero point is adjustable, and the weighting zero point needs not to be frequently adjusted again.

Description

technical field [0001] The invention relates to the technical field of elevator control, in particular to an elevator weighing system. Background technique [0002] At present, the weighing method of double-layer car bottom + eddy current sensor is commonly used in the weighing application technology of the elevator industry, which detects the deformation of the car bottom through the eddy current sensor to obtain the load of the car. Usually, in order to better obtain the deformation of the car bottom, the car bottom must adopt a double-layer structure, and weighing rubber is placed between the two layers of car bottoms. This increases the design difficulty of the car bottom, and more materials are used, so the cost of the car bottom is higher. At the same time, due to the use of double-layer car floors, the thickness of the car bottom is increased. In order to meet the buffer distance requirements of the national standard, a larger pit depth is required, which not only oc...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of existing methods and technologies, and provide a method that reduces costs, saves hoistway space, improves measurement accuracy, and has a simple system structure, easy installation and maintenance, and adjustable weighing zero point without frequent readjustment of the weighing scale. Heavy Zero Elevator Weighing System

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