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A hoisting sling specially for long steel rails

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 large deflection and can not guarantee the safety of the transportation process, and achieves improved stress conditions, simple structure of the spreader, and good rigidity. Effect

Inactive Publication Date: 2009-03-04
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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  • A hoisting sling specially for long steel rails
  • A hoisting sling specially for long steel rails
  • A hoisting sling specially for long steel rails

Examples

Experimental program
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Embodiment Construction

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

[0017] Figure 1 and figure 2 As shown, a special lifting spreader for long rails. It includes a hanging beam and two sets of pulleys mounted on the hanging beam; the hanging beam is composed of an upper hanging beam 1, an adjustable pull rod 2 and a lower hanging beam 3, and two pairs of connecting plates are arranged in the middle of the upper hanging beam and the lower hanging beam. Four pins are used to connect; the adjustable pull rod is connected at the end of the upper hanging beam and the lower hanging beam. 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 h...

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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 Patents(China)
IPC IPC(8): B66C1/00B66C1/06
Inventor 闫俊慧王江李朗明胡晴莽
Owner TAIYUAN HEAVY IND
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