Hoisting mechanism

Abstract

The invention discloses a hoisting mechanism, which comprises a frame, a motor and two coiling devices, wherein the frame is arranged on a crane and can reciprocate; the motor, the quantity of which is one, is fixedly mounted on the frame; output shafts are arranged at the two ends of the motor; the two coiling devices are fixedly mounted on the two sides of the motor; central lines of coiling blocks on the coiling devices are vertical to the central lines of the output shafts of the motor; power input ends of the coiling blocks are connected to the output shafts; fixed pulley sets and wire rope balancing lever devices are fixedly mounted on the two sides of the coiling blocks; and the coiling blocks, the fixed pulley sets and the wire rope balancing lever devices are in winding connection with a movable pulley mounted on a hoisting hook by wire ropes. Compared with the prior art, the hoisting mechanism has the beneficial effects that a function of an original hoisting mechanism is achieved by changing a structure of a driving part and the structure and layout of the coiling devices in the hoisting mechanism under a condition of reducing a set of telescopic rigid guiding cylinders and a hoisting motor, thereby reducing the manufacturing cost. Structural components are reduced, thereby reducing the fault points and lowering the repairing and maintaining costs.

Description

technical field [0001] The invention relates to a hoisting mechanism, in particular to a hoisting mechanism of a crane for hoisting wide and thick plates in a steel factory. Background technique [0002] At present, the hanging beam crane is the necessary lifting equipment for the wide and thick plate process in steel mills. Such as figure 1 As shown, the arrows shown in the figure are the moving directions of the hanging beam crane 4 and the existing hoisting mechanism 20 respectively. A hoisting mechanism 20 is installed on the hanging beam crane 4 . Hanging beam crane 4 must solve the problem of starting, braking and swinging in operation when lifting wide and thick plates, otherwise there will be hidden dangers of accidents. The running speed of the hoisting mechanism 20 on the hanging beam crane 4 used in the steel mill is about 40m / min, while the running speed of the hanging beam crane 4 itself is about (100~120)m / min. The lifting point 21,22 of hoisting mechanism ...

AI Technical Summary

Problems solved by technology

Although the use of the rigid guide cylinder device 23 can prevent the excessive swing of the wide and thick plate, the rigid guide cylinder device 23 has a relatively large weight, which increases the calculated load of the hoisting mechanism 20, and requires the use of more powerful hoisting motors 24, 25. Make hoisting mechanism 20 manufacture cost increase

In addition, the increase of the rigid guide cylinder device 23 increases the failure points, thereby increasing the repair and maintenance costs of the lifting mechanism 20

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