Rope tensioning device and crane with same

Abstract

The invention provides a rope supporting tensioning device and a crane with the same. The device comprises two oppositely arranged first mounting bases (10) and a tensioning mechanism (20). The tensioning mechanism (20) is arranged between the two first mounting bases (10) and comprises a carrier roller component (21) and a compression component (22). Two ends of the carrier roller component (21) are in one-to-one corresponding connection with the two first mounting bases (10), and the carrier roller component (21) is provided with a rope winding cambered surface extending along the axial direction of the carrier roller component (21) and arranged in a radial movable mode relative to the two first mounting bases (10) to tension a hoisting rope (31) wound on the rope winding cambered surface. The compression component (22) is arranged on the first mounting bases (10) and in drive connection with the carrier roller component (21). By means of the device and the crane with the same, the phenomenon that the steel wire rope leaps and jumbles easily on a winding cylinder and a pulley can be changed, abrasion to the hoisting rope is reduced, and the service life of the hoisting rope is increased.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a rope tensioning device and a crane having the same. Background technique [0002] During the use of the hoisting mechanism of the crane, a section of the rope between the hoisting rope coming out of the drum and the fixed pulley wound on the boom will sag due to its own weight, resulting in the failure of the hoisting mechanism when the load is not hoisted or the hoisting mechanism When driving and shifting, the hoisting rope is prone to skipping or messing up the rope on the reel and the fixed pulley. At present, in order to avoid the occurrence of the sagging phenomenon of the hoisting rope and ensure the normal use of the hoisting mechanism, a hoisting rope tensioning device is provided on the crane. [0003] Such as figure 1 As shown, the underwire tensioning device includes a support portion 10' and a tensioning portion 20'. Wherein the support seat 11' of th...

AI Technical Summary

Problems solved by technology

The defect of the support rope tensioning device of this pulley form is that, because the outer circumferential wall of the pulley has a groove structure, when the lifting rope 30' is wound on the supporting wheel 12' and the tensioning pulley 22', the lifting rope 30' Most of the outer surface will be accommodated in the groove structure and rub against the inner surface of the groove structure, resulting in a large frictional contact area between the lifting rope 30' and the supporting wheel 12' and the tensioning wheel 22', so that the lifting rope 30' is subject to increased friction, and the lifting rope 30' is prone to wear

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