Hoisting slings specially for long steel rail

A technology of long rails and spreaders, which is applied in the directions of load hanging components, transportation and packaging, can solve the problems of inability to guarantee the safety of the transportation process, large deflection, etc., and achieves a simple structure of the spreader, improved stress conditions, and good rigidity. Effect

Inactive Publication Date: 2007-04-11
TAIYUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the weight of the long steel rail has increased several times, and the downward deflection during lifting and transportation is also very large, such a crane can no longer be used for lifting, and the original crane spreader is difficult to meet the requirements of transportation, and cannot guarantee the smoothness of the transportation process. Safety

Method used

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  • Hoisting slings specially for long steel rail
  • Hoisting slings specially for long steel rail
  • Hoisting slings specially for long steel rail

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Experimental program
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Effect test

Embodiment Construction

[0016] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] As shown in Figure 1 and Figure 2, a special lifting spreader for long rails. It includes hanging beams and two sets of pulleys installed on the hanging beams; the hanging beams are composed of upper hanging beams 1, adjustable pull rods 2, and lower hanging beams 3; connected by two pin shafts; the adjustable tie rods are connected at the ends of the upper and lower hanging beams. The upper hanging beam is a box beam structure with double suspension points, and the lower hanging beam is a truss structure with a trapezoidal cross section. The lower hanging beam is provided with some pairs of lifting rail protection devices 4, and several electromagnets 5 are housed, and the electromagnets are connected to the lower hanging beam with chains.

[0018] As shown in Figure 3 and Figure 4, the rail protection device. It includes a rotating pushing ...

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PUM

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Abstract

The hoisting sling special for long steel rail includes one suspended beam, one electromagnetic disc mounted below the suspended beam, and two pulley blocks. It features the suspended beam comprising one upper suspended beam, one adjustable pull rod, one lower suspended beam, and two pairs of connecting plates connected with four pin shafts between the upper suspended beam and the lower suspended beam; and several pairs of hoisted rail protecting devices. The upper suspended beam is one double hoisting point box beam structure, and the lower suspended beam is one truss structure with trapezoidal cross section. The present invention has simple structure, light weight, high rigidity, has safety, high production efficiency and easy operation and maintenance.

Description

1. Technical field [0001] The invention relates to crane technology, in particular to a special hoisting spreader for long steel rails used in bridge cranes. 2. Background technology [0002] At present, most of the steel rails produced by rail and beam factories of existing metallurgical enterprises are 12.5-25m in length. The crane spreader used to carry the rail is a suspension beam with an electromagnetic disk, which is composed of a hanging beam and several electromagnetic disks hanging under the suspension beam. When moving the rails, the electromagnetic disk on the hanging beam sucks the rails and is carried by a crane. With the development of railway and vehicle speed-up, rails with a length of 50-100m have been applied. Because the weight of the long steel rail has increased several times, and the downward deflection during lifting and transportation is also very large, such a crane can no longer be used for lifting, and the original crane spreader is difficult to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/00B66C1/06
Inventor 闫俊慧李朗明
Owner TAIYUAN HEAVY IND
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