Elevator weighing device

Abstract

The invention relates to an elevator weighing device which comprises a rope hitch plate and a middle supporting plate. A plurality of rubber drums which are distributed side by side are arranged between the rope hitch plate and the middle supporting plate, a plurality of rope hitch springs corresponding to the rubber drums are arranged at the upper end of the middle supporting plate, an eddy current sensor, an overload detector switch, a rope loosening detector switch support and a rope loosening detector switch are arranged on the rope hitch plate, and an eddy current sensor magnetism blocking plate, an overload detector switch touch plate and a rope loosening detector switch touch plate are installed on the middle supporting plate. The elevator weighing device further comprises a plurality of rope hitch pull rods corresponding to the rubber drums and the rope hitch springs, the rope hitch pull rods sequentially penetrate through through holes of the rope hitch plate, the rubber drums, the middle supporting plate and the rope pitch springs, one end of each rope hitch pull rod is provided with a loosening-fastening nut for fixing the corresponding rope hitch spring, and the other end of each rope hitch pull rod is connected with the corresponding elevator lifting car lateral hauling rope through a connecting assembly. The elevator weighing device is simple in structure, high in lifting car weighing detection accuracy, low in cost, capable of saving shaft space, convenient to install, debug and operate and high in safety performance.

Description

technical field [0001] The invention relates to the technical field of vertical elevators, in particular to an elevator weighing device. 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. The car bottom is a double-layer structure, and weighing rubber is placed between the two car bottoms. The load of the car is obtained by detecting the deformation of the weighing rubber through the eddy current sensor. This increases the design difficulty of the car bottom, and more materials are used, and the cost of the car bottom is higher. When the load in the car is uneven, it will cause inaccurate weighing signals. 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 occupies t...

AI Technical Summary

Problems solved by technology

This device cannot effectively adjust the tension of each steel wire rope evenly, and it is easy to cause the installation plate to tilt. Because the sensor is very sensitive to the distance, a distance deviation of 2mm will greatly affect the detection accuracy of the weighing signal, and the car load cannot be accurately detected. At the same time, there is no 110% car overload mechanical detection, does not meet the national standard requirements

Images