Gantry crane and hoisting mechanism thereof

Abstract

The invention discloses a hoisting mechanism of a gantry crane. The hoisting mechanism comprises a left hoisting assembly (1) and a right hoisting assembly (2) which are symmetrically arranged on a trolley rack (3), wherein the left hoisting assembly (1) and the right hoisting assembly (2) are in movable connection with the trolley rack (3), so that the left and right hoisting assemblies move leftward and rightward relatively to the trolley rack; and the contact hoisting points between the left hoisting assembly (1) and a hoisting tool (4) as well as between the right hoisting assembly (2) and the hoisting tool (4) are located just above the hoisting point of the locking and hoisting object of the hoisting tool (4). By adopting the hoisting mechanism, the stresses of the hoisting tool and the trolley rack are improved, thus the weights of the hoisting tool and the trolley rack are alleviated, the hoisting load is alleviated and the energy is saved. In addition, the invention also discloses the gantry crane comprising the hoisting mechanism.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a lifting mechanism of a gantry crane. In addition, the present invention also relates to a gantry crane comprising the above-mentioned lifting mechanism. Background technique [0002] The rail-mounted container gantry crane is a typical gantry crane, which is generally used for loading, unloading and stacking of containers in docks or freight yards. [0003] The rail-mounted container gantry crane mainly includes the gantry span, the driving mechanism on the left and right sides of the gantry span, and the loading and unloading mechanism on the beam of the gantry span. The lifting mechanism in the loading and unloading mechanism is one of the important components of the crane. One, it is used to realize the vertical and horizontal movement of goods such as containers. [0004] In the prior art, the position of the hoisting mechanism is fixed on the trolley frame....

AI Technical Summary

Problems solved by technology

However, since the connection position between the lifting mechanism and the upper frame of the spreader remains unchanged, when the spreader is hoisting the container, the spreader beam will bear an additional bending moment, which will affect the service life and operation safety of the spreader beam. In order to ensure safe lifting , the measures taken in the prior art are generally to increase the beam section of the spreader

[0006] However, the increase in the cross-section of the spreader will lead to an increase in the weight of the spreader, thereby increasing the power of the lifting operation, resulting in relatively large energy waste

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