Pulley block type vertical shaft lifting joint-adjusting test device and method

Abstract

The invention relates to a pulley block type vertical shaft lifting joint-adjusting test device comprising a support foundation, pulley block loading devices, pulley ropes and a rope pitch positioningdevice. The pulley block loading devices are arranged on an III platform of the support foundation symmetrically along horizontal and longitudinal directions. One end of each pulley rope is fixed atthe pulley block loading device, rolls the pulley block and then is fixed at the rope pitch positioning device. Loads at two sides of a coiling block are simulated based on the principles of driving the steel ropes by the pulley block and driving the pulley block by a hydraulic cylinder. On the basis of the multi-pulley-rope parallel driving mode, the load demand on the pulley rope is reduced. With a surrounding-angle positioning wheel, adaptability to main shaft devices with different coiling block diameters and surrounding angles is improved. With the rope pitch positioning plate, the joint-adjusting test device is suitable for main shaft devices with different steel rope numbers and steel rope pitches. The bearing performance of the main shaft device, the anti-skid performance of the friction pad and the brake performance of the brakes can be reliably evaluated; joint-adjusting testing is carried out on the vertical shaft lifting machine with different specifications before field mounting; and thus the pulley block type vertical shaft lifting joint-adjusting test device has the great significance in ensuring the safety of the vertical shaft lifting.

Description

technical field [0001] The invention relates to a vertical shaft hoist joint debugging test device and method, in particular to a vertical shaft hoist joint debugging testing device and method. Background technique [0002] As the main mine hoisting equipment, the vertical shaft hoist is responsible for the important tasks of lifting coal gangue, lowering materials, lifting personnel and equipment, and is the connection hub between the coal mine underground and the ground. The hoist joint debugging test refers to the joint inspection of whether the main shaft device and the braking system can adapt to normal and extreme working conditions after the successful installation of the main shaft device (including the drum, main shaft, and bearing housing), the liner, and the braking system. A key step before hoist installation on site. At the same time, the vertical shaft hoist is a large-scale basic equipment for one-time installation, especially the shaft tower type vertical sh...

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Problems solved by technology

The above research mainly has the following problems: First, the state monitoring of the equipment in service is mainly carried out, but the performance test of the shaft hoist system before installation is lacking, and the latter can uniformly calibrate the different types of shaft hoist systems produced by various manufacturers before installation on site. To avoid repeated testing investment of large-scale production enterprises, improve the manufacturing quality of small-scale production enterprises, and ensure the safety of the lifting system from the source; second, mainly for the detection of a single type of lifting system, which cannot effectively adapt to different reel diameters and volumes. The hoisting system of cylinder wrapping angle, number of wire ropes, and wire rope spacing; third, there is no loading test before installation, and the bearing performance of the main shaft device, the anti-skid performance of the liner, and the braking performance of the brake cannot be accurately evaluated; fourth, The detection of in-service mines cannot effectively utilize the change of characteristic parameters of the spindle device under no-load and heavy-load conditions, which is an important feature for diagnosing defects such as abnormal deformation and cracks of the spindle device. Loading and other vicious working conditions, and the latter is an important reference for judging whether the spindle device, friction lining, and braking system can withstand extreme working conditions

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