Tower crane, lifting mechanism thereof and method for leveling lifting mechanism

Abstract

The invention discloses a tower crane, a lifting mechanism thereof and a method for leveling the lifting mechanism. The lifting mechanism comprises a first lifting unit, a second lifting unit and a lifting assembly, wherein the first lifting unit comprises a first driving mechanism (11) and a first drum (12); the first driving mechanism (11) drives the first drum (12) to rotate; the second lifting unit comprises a second driving mechanism (21) and a second drum (22); the second driving mechanism (21) drives the second drum (22) to rotate; and the lifting assembly is provided with a hook crossbeam (4) and a hook arranged below the hook crossbeam (4), wherein a first rope (31) on the first drum (12) extends out of the first drum (12) and is connected to one end of the hook crossbeam (4); and a second rope (32) on the second drum (22) extends out of the second drum (22) and is connected to the other end of the hook crossbeam (4). The lifting capacity of the lifting mechanism is greatly improved, the rope capacity is improved, and the lifting mechanism can adapt to conditions of high lifting height and heavy lifting weight.

Description

technical field [0001] The invention relates to a tower crane, in particular to a tower crane, its hoisting mechanism and a leveling method for the hoisting mechanism. Background technique [0002] Tower cranes are widely used material handling machinery on construction sites. Most of the currently widely used tower cranes are single-hook and single-drive. Generally, a drum is driven by a set of driving mechanism, such as a geared motor and a brake device. The hoisting weight is small and the rope capacity is low. When a fault occurs, not only does it need to be shut down for maintenance immediately, but it may also need to be lifted by other power devices to repair. When lifting heavier objects, it is necessary to configure a driving mechanism with a larger specification, which is not conducive to improving the versatility of the product. [0003] The existing single-drive hoisting mechanism mainly includes two kinds of hoisting mechanisms arranged in an "L" shape and a h...

AI Technical Summary

Problems solved by technology

Its biggest advantage is that when one of the motors or reducers fails, the mechanism can still work normally, and the hoisting weight of the mechanism is 50% of the rated hoisting weight; It is difficult to exceed 1400 meters; when the mechanism has only one motor working, the other set becomes a kind of load, so the transmission efficiency of the mechanism is relatively low

[0005] "∏"-shaped hoisting mechanism and "U"-shaped hoisting mechanism, these mechanisms can solve the defect that the single-drive hoisting mechanism is unbalanced relative to the balance arm, but its hoisting weight and rope capacity are still low

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