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Jib-type crane pulley device

A crane and pulley technology, used in cranes, hoisting devices, portable lifting devices, etc., to ensure the safety of hoisting, reduce deformation, and ensure stability.

Inactive Publication Date: 2010-09-22
CHANGZHOU CHANGKUANG HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the structural defects of the existing pulleys of jib cranes, and provide a pulley device for jib cranes that can effectively reduce the deformation of the pulley during use, prolong the service life of the pulley and ensure safe hoisting

Method used

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  • Jib-type crane pulley device
  • Jib-type crane pulley device
  • Jib-type crane pulley device

Examples

Experimental program
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Embodiment 1

[0038] See figure 1 and figure 2 , The jib type crane pulley device of this embodiment includes a pulley, a pulley shaft 4 and a pulley frame 7.

[0039] Pulley bag wheel rim 1, wheel spoke 2, wheel hub 3, swing mechanism 5 and oil circuit 6. The oil passage 6 is located in the spoke 2 and the hub 3 and communicates with the inner ball 51 and the steel ring 52 . A U-shaped rope groove carrying a wire rope is arranged on the wheel rim 1, and the wheel spoke 2 connects the wheel rim 1 and the wheel hub 3. The swing mechanism 5 includes an inner ball 51 , a steel ring 52 , a positioning sleeve 53 , a slide key 54 and a fixed key 55 .

[0040] still see figure 1 and figure 2 , Inner ball 51 is made of aluminum-iron bronze casting, is sleeved in the inner ring of steel ring 52, and its center of sphere coincides with the center of circle of steel ring 52. See Figure 8 , The inner ball 51 is provided with a pulley shaft hole 51-1 matched with the pulley shaft 4, and the pu...

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Abstract

The invention discloses a jib-type crane pulley device which comprises a pulley and a pulley shaft. The pulley comprises a rim with a U-shaped rope groove, a hub, a spoke and a swinging mechanism, wherein the spoke is connected with the rim and the hub, the swinging mechanism comprises an inner ball, a steel ring and a positioning sleeve, the inner ball is sleeved in an inner ring of the steel ring, the ball center of the inner ball is superposed on the circle center of the steel ring which is fixedly connected with the hub by the positioning sleeve, and the inner ball is provided with a pulley shaft hole matched with the pulley shaft which penetrates through the pulley shaft hole of the inner ball of the swinging mechanism and is in rotating connection with the inner ball. When the jib-type crane pulley device is in use, the pulley can wholly swing along with the inclination direction of a hoisted object to constantly keep a force position kept in the center of the pulley so that the rope groove can not be deformed due to unbalanced force, a steel wire is prevented from jumping to cause danger, the deformation of the pulley is effectively lessened in the use process, and the pulley has prolonged service life and is safe to hoist.

Description

technical field [0001] The invention relates to a hoisting machine, in particular to a pulley device on a jib type crane. Background technique [0002] A crane is a multi-action hoisting machine that lifts vertically and carries heavy objects horizontally within a certain range, also known as a crane, and belongs to material handling machinery. Cranes are divided into jib cranes and bridge cranes according to their structure. The structural feature of the jib crane is that there is an overhanging and rotatable jib as the main force-bearing component. Through the combined movement of the four major mechanisms such as the lifting mechanism, the luffing mechanism, the rotating mechanism and the running mechanism, it can realize Loading and unloading operations in circular or oblong spaces. The hoisting mechanism is a mechanism used to lift materials vertically. It is the most important and basic mechanism of the crane. As a part of the hoisting mechanism, the pulley is the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/50B66C23/62
Inventor 顾龙标商伟军胡桂君王守岗刘正连钱勇强邵珂
Owner CHANGZHOU CHANGKUANG HOISTING MACHINERY
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