Double volume quadruple arc door hoist

Abstract

The invention discloses a double-roll four-block arc door opening and closing machine which comprises a machine frame. A speed reducer, a power device and a lifting device are fixedly arranged on the machine frame. The speed reducer is connected with an output end of the power device. The lifting device comprises two sets of double-block winding barrels and lifting ropes which are arranged on the double-block winding barrels. The two sets of double-block winding barrels are directly connected with the speed reducer in a driving mode. One end of each lifting rope is fixed on one of the two sets of double-block winding barrels and bypasses a hanger, and the other end of each lifting rope is fixed on other set of double-block winding barrels. According to the method, the double-roll four-block arc door opening and closing machine reduces diameter of steel wire ropes and winding barrels effectively, overcomes the defects that a traditional arc door opening and closing machine is large in diameter of the steel wire ropes and the winding barrels, the steel wire ropes are easy to impact by water flow and poor in safety and the like, and solves the problems that local stress of the steel wire ropes is concentrated caused by connection of the steel wire ropes of a single-block opening and closing machine and arc door hanging lugs. The double-roll four-block arc door opening and closing machine has the advantages of being simple in structure, small in size, light, compact in arrangement, free from maintenance, good in safety precautions and the like.

Description

technical field [0001] The invention relates to the field of hoists, in particular to a large and medium-sized double-volume quadruple arc door hoist. Background technique [0002] The fixed hoist hoist is generally used in water conservancy and hydropower projects for the opening and closing of gates. At present, the hoists used for large and medium-sized arc doors are generally divided into hydraulic hoist and fixed hoist hoist, and fixed hoist hoist is divided into single-drum hoist and double-drum hoist . [0003] The deficiencies of the existing large and medium-sized arc gate hoists are mainly manifested as follows: [0004] The hydraulic hoist is expensive, complicated to control and high in maintenance costs; [0005] Single-drum hoist: It adopts a single wire rope hoist design. One end of the wire rope is fixed to the drum, and the other end is directly connected to the gate lug. For large and medium-sized fixed hoist hoist (the hoisting force is greater than 500...

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Problems solved by technology

[0004] The hydraulic hoist is expensive, complicated to control and high in maintenance costs;

[0005] Single-drum hoist: It adopts a single wire rope hoist design. One end of the wire rope is fixed to the drum, and the other end is directly connected to the gate lug. For large and medium-sized fixed hoist hoist (the hoisting force is greater than 500N), The diameter of the steel wire rope and the diameter of the reel are large, occupying a large space, heavy in weight, and high in use and maintenance costs; during the opening and closing of the gate, the fixed position of the steel wire rope and the gate lug changes direction with the change of the opening and closing height, which is likely to cause local stress concentration. Accidents prone to wire rope breakage

[0006] Double-drum hoist: It adopts a cable-stayed design, adding a movable pulley block, reducing the diameter of the wire rope and drum, but there are still the following shortcomings: the wire rope of the hoist cannot be completely attached to the panel, and the wire rope is easily shaken by the impact of water flow , the steel wire rope will rub against the rope groove, and even the phenomenon of job-hopping and chaotic grooves will occur

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