A multi-rope friction lifting ultra-deep large-tonnage lifting system and its application method

Abstract

The invention discloses a multi-rope friction lifting ultra-deep large-tonnage lifting system which is commonly driven by a large traction force front rope driving system and a balance rope driving system. The large traction force front rope driving system and the balance rope driving system are of compound winding structures. Each balance rope is provided with a balance rope adjusting device, andthe installation heights of the balance rope adjusting devices on the two sides are vertically staggered. A left-right guide wheel set is installed at the position, corresponding to each balance rope, of the corresponding balance rope adjusting device. Each guide wheel set is composed of three guide wheels and one hydraulic cylinder, wherein the hydraulic cylinder and the corresponding middle guide wheel are connected and are installed at the same height. All the hydraulic cylinders are commonly connected with a pump station. Tensioning force of the balance ropes drives the hydraulic cylinders through the pump station in the lifting circulation process, the guide wheels on the balance ropes are driven to move horizontally for adjustment, and the tension fluctuation values of all sectionsof system front ropes in the whole lifting circulation are reduced. The multi-rope friction lifting ultra-deep large-tonnage lifting system can be overall arranged in a vertical shaft, roadway space is not occupied, the driving torque of the balance ropes can also be reduced, stability of the whole lifting system is improved, and the service life of a steel wire rope is prolonged.

Description

technical field [0001] The invention relates to a multi-rope friction lifting ultra-deep and large-tonnage lifting system and a using method thereof, belonging to the technical field of ultra-deep mine shafts. Background technique [0002] In the multi-rope friction lifting system, due to the influence of the balance rope, the first rope's own weight and the load, the system will experience stress fluctuations during the lifting cycle, which limits the maximum height that the friction lifting system can lift and the load that can be loaded to a certain extent. The maximum net load value, and the stress fluctuation in the large-tonnage hoisting system with a deep hoisting depth is relatively large, which affects the service life of the wire rope and is not conducive to the safe operation of the hoisting system. [0003] At the same time, in the multi-rope friction lifting system, because the tension between the balance ropes cannot be adjusted to be absolutely equal when the ...

AI Technical Summary

Problems solved by technology

[0002] In the multi-rope friction lifting system, due to the influence of the balance rope, the first rope's own weight and the load, the system will experience stress fluctuations during the lifting cycle, which limits the maximum height that the friction lifting system can lift and the load that can be loaded to a certain extent. The maximum net load value, and the stress fluctuation in the large-tonnage hoisting system with a deep hoisting depth is relatively large, which affects the service life of the wire rope and is not conducive to the safe operation of the hoisting system

[0003] At the same time, in the multi-rope friction lifting system, because the tension between the balance ropes cannot be adjusted to be absolutely equal when the steel wire ropes are replaced, the elastic elongation of all the steel wire ropes is different, resulting in the tension of the steel wire ropes. Unbalanced; the geometric dimensions and mechanical properties of the balance rope, such as tensile strength, elastic modulus, etc. are different; the roundness of each rope groove is different due to the aging of the liner of the drive wheel of the balance rope, processing errors, etc., resulting in different rope grooves during the traction process. Due to various reasons such as the different moving distances of the steel wire ropes and the uneven stress on each steel wire rope, the hydraulic tension balance device fixed to the container is mainly used for adjustment at present, which increases the self-weight of the container, and the adjustment distance is limited at the same time.

Images