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Four-rope lifting appliance of crane

A technology of cranes and spreaders, applied in the field of four-rope spreaders, can solve the problems of poor stability of motor grabs and low work efficiency, and achieve the effect of improving loading and unloading efficiency and good stability

Inactive Publication Date: 2018-01-19
张达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since portal cranes require high efficiency when loading and unloading goods, and the motor grab has poor stability when in use, and an anti-swing device must be installed, the work efficiency is low, so a four-rope sling for the crane is needed to solve these problems. question

Method used

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  • Four-rope lifting appliance of crane
  • Four-rope lifting appliance of crane

Examples

Experimental program
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Embodiment Construction

[0013] like Figure 1 ~ Figure 2 As shown, a four-rope spreader for a crane includes a spreader body arranged on the jib of the crane, and the spreader body includes a hoisting rope 1, a pulley block 2 and a hook 3, and the pulley block 2 is arranged on On the jib frame of the crane, the hoisting rope 1 is wound around the pulley block 2, one end of the hoisting rope 1 is connected with the hook, and the other end is connected with the driving device in the crane.

[0014] There are at least four sets of pulleys 2, and each set is composed of four pulleys. There are four lifting ropes 1, which are respectively wound on the corresponding pulleys.

[0015] A four-rope spreader for a crane includes a spreader body arranged on a jib of a crane, and the spreader body includes a hoisting rope 1 , a pulley block 2 and a grab bucket 4 .

[0016] The pulley block 2 is arranged on the jib of the crane, the hoisting rope 1 is wound around the pulley block 2, one end of the hoisting rope...

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PUM

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Abstract

The invention provides a four-rope lifting appliance of a crane. The four-rope lifting appliance of the crane comprises a lifting appliance body arranged on a crane jib; the lifting appliance body comprises lifting ropes, pulley sets and lifting hooks; the pulley sets are arranged on the crane jib; the lifting ropes are wound on the pulley sets; and one ends of the lifting ropes are connected withthe lifting hooks, and the other ends of the lifting ropes are connected with a driving device in the crane. At least four pulley sets are provided; each pulley set consists of four pulleys; and fourlifting ropes are provided, and are wound on the corresponding pulleys. In the four-rope lifting appliance of the crane, as lifting ropes of a portal crane do not rotate around pulleys along with change of a lifting height, a four-rope grab can be adopted, the loading and unloading efficiency is improved, and stability is high; and a shaking prevention device is not needed, and when the grab is used, the lifting ropes at the upper parts of the lifting hooks and the pulley sets are only removed from wedge sleeves, and the lifting ropes are fixed above the pulleys at the upper part of the grabthrough the wedge sleeves.

Description

technical field [0001] The invention relates to a crane spreader, in particular to a four-rope spreader for a crane. Background technique [0002] For portal cranes, when the spreader is used for both hook and grab, a motor grab is usually hung under the hook. Since portal cranes require high efficiency when loading and unloading goods, and the motor grab has poor stability when in use, and an anti-swing device must be installed, the work efficiency is low, so a four-rope sling for the crane is needed to solve these problems. question. Contents of the invention [0003] Aiming at the deficiencies in the existing technology, the invention provides a four-rope spreader for a crane. [0004] In order to achieve the above object, the technical solution adopted by the present invention is: a four-rope spreader for a crane, which includes a spreader body arranged on the jib of the crane, and the spreader body includes a hoisting rope, a pulley block and a hook , the pulley se...

Claims

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Application Information

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IPC IPC(8): B66C3/12
Inventor 张娜
Owner 张达