Ultra-deep vertical shaft dual-channel large-load friction lifting system and method for reducing stress fluctuations

Abstract

The invention provides a dual-channel large-load friction hoisting system for an ultra-deep vertical shaft. The dual-channel large-load friction hoisting system comprises shafts; even numbers of channels are arranged in the shafts in parallel to form front rows and rear rows; parts above each pair of front channels and rear channels share a friction wheel; hoisting steel wire ropes on the frictionwheels are uniformly divided into front parts and rear parts with the same number; two sides of the front hoisting steel wire ropes and the rear hoisting steel wire ropes between the friction wheelsand the shafts are respectively wound between two parallel guide wheels; the two ends of the front hoisting steel wire ropes are separately connected with front balances and front containers; the twoends of the rear steel wire ropes are separately connected with rear containers and rear balances; when the front balances and the front containers are staggered in position, the front balances pass through the front containers; and when the rear balances and the rear containers are staggered in position, the rear balances pass through the rear containers; and the lower ends of the front balancesand the front containers are connected by front balance tail ropes and the lower ends of the rear containers and the rear balances are connected by rear balance tail ropes to form a closed system. Thedual-channel large-load friction hoisting system can realize large-load friction hoisting of even numbers of channels, the stress fluctuation value of the hoisting system is reduced to a certain degree, and the ultra-deep hoisting under large load is improved.

Description

technical field [0001] The invention relates to a large-load lifting system, in particular to a dual-channel large-load friction lifting system for an ultra-deep shaft and a method for reducing stress fluctuations, belonging to the technical field of ultra-deep shafts, and also applicable to ultra-high and large-load traction Lifting systems such as mining elevators and high-speed elevators. Background technique [0002] At present, friction hoisting systems for ultra-deep shafts have been widely used in various deep mines. However, for friction hoisting systems, large stress fluctuations will occur due to the influence of load and wire rope self-weight changes during heavy-load transportation, which will seriously threaten The safe production of the mine hoisting system limits the load limit value that the ultra-deep shaft hoisting system can lift within a certain lifting height, which affects the production efficiency of the mine. [0003] However, existing friction lifti...

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Problems solved by technology

[0002] At present, friction hoisting systems for ultra-deep shafts have been widely used in various deep mines. However, for friction hoisting systems, large stress fluctuations will occur due to the influence of load and wire rope self-weight changes during heavy-load transportation, which will seriously threaten The safe production of the mine hoisting system limits the load limit value that the ultra-deep shaft hoisting system can lift within a certain lifting height, which affects the production efficiency of the mine

[0003] However, the existing friction lifting systems with counterweights, such as the current lifting systems such as mine elevators and high-speed elevators, have only one container and counterweight, and there is no way to reduce the fluctuating stress, which affects the efficiency of lifting

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