Ascending and descending operation and belt breakage detection method of elevator

Abstract

The invention provides an ascending and descending operation and belt breakage detection method of an elevator. A transmission detection device and method for detection through synchronous rotation with a motor driving shaft are used, so as to integrally accelerate the ascending and descending speed of a cargo carrying platform and improve the stroke control precision of the cargo carrying platform; meanwhile, the monitoring disposal of the belt breakage and other abnormal ascending and descending states can be realized; and the problems of deviation and abrasion of a lifting belt are prevented and solved to the maximum degree. Specifically, the lifting belt connected with the cargo carrying platform cyclically bypasses through a driving module, a steering module and a direction changing module to form a closed loop operation track in the whole ascending and descending process through being driven by a servo motor; the driving module and the servo motor drive a main driving shaft to rotate; the lifting belt is driven to do ascending and descending operation through a driving belt wheel; the steering module is provided with an encoder at the end part of a steering shaft bypassing the lifting belt; the lifting belt drives the steering shaft to rotate, and the encoder outputs a frequency feedback signal; and by calculating and comparing the frequency feedback signal output by theencoder and a servo motor output signal, the practical ascending and descending stroke distance of the cargo carrying platform is calculated and is used as the basis of judging whether the lifting belt is broken or not.

Description

technical field [0001] The invention relates to a hoist lifting operation and broken belt detection device and method used in an automatic three-dimensional warehouse, belonging to the technical field of logistics storage. Background technique [0002] At present, in the conveying equipment in the logistics and warehousing industry, hoists are usually used to lift or lower pallets, loading platforms and other devices from one working height to another working height, so as to assist the vertical warehouse to complete the storage, delivery and storage of materials. The layer change operation and maintenance work of the trolley, etc. [0003] Existing domestic and foreign hoists have a relatively single function and large volume, and mainly have the following disadvantages: First, high-speed hoists have become the standard equipment of modern logistics automatic production lines, but the existing equipment structure combination cannot effectively greatly To increase the lifti...

AI Technical Summary

Problems solved by technology

[0003] Existing domestic and foreign hoists have a relatively single function and large volume, and mainly have the following disadvantages: First, high-speed hoists have become the standard equipment of modern logistics automatic production lines, but the existing equipment structure combination cannot effectively greatly Increase the lifting speed of the loading platform. If it is driven by a high-power motor alone, the energy efficiency will be relatively low, which is not conducive to the control of operating costs.

Second, the positioning accuracy of the lifting equipment such as the loading platform is not high, and the operating height is difficult to control accurately, and the phenomenon of staggered floors often occurs, which brings troubles to the entry and exit of goods.

Third, for hoists with high operating speed or large stroke, the lifting belt is prone to deviation and excessive wear due to drift under the premise of bearing a large load

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