Lifting mechanism and sling of large tonnage single hanging point crane

A lifting mechanism and large tonnage technology, applied in the direction of load block, load hanging components, transportation and packaging, etc., can solve the problems of increased manufacturing and use costs, less compact structure, complex spreader structure, etc., to reduce stiffness Requirements, simple and compact structure, simple and clear force effect

Inactive Publication Date: 2008-02-06
TAIYUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although it improves the stress on the trolley frame and balances the stress on the trolley frame, its structure is relatively less compact and more complicated. The equipped spreader has multiple lifting points, which makes the structure of the spreader relatively complicated, thus The weight of the trolley frame, hoisting mechanism, and spreader of the crane is relatively large, which increases the cost of manufacturing and use

Method used

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  • Lifting mechanism and sling of large tonnage single hanging point crane
  • Lifting mechanism and sling of large tonnage single hanging point crane

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Embodiment Construction

[0015] As shown in Figure 1 and Figure 2, the hoisting mechanism of a large-tonnage crane. It includes a hoisting mechanism 2 mounted on a trolley frame 1, a winding wire rope 4 and a spreader 3; the hoisting mechanism consists of two electric motors 201, a large reducer 202, a reel 203, a double fixed pulley block 204, and a balance lever 205 and braking system; the double motors are connected to the two input shafts of the reducer through the coupling 206 inside the reducer. Shaft high-speed gear; there are two output shafts at both ends of the reducer, which are connected and driven by two double-connected single-layer winding reels through the reel coupling. The lifting mechanism is arranged symmetrically with the center of the reducer axis. The fixed pulley block and the balance lever device are installed in the inner center of the two reels respectively; the reducer is installed on the end beam of the trolley frame, and the fulcrum 101 of the trolley running mechanism co...

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Abstract

The present invention provides a hoisting mechanism and spreader of large-tonnage single hanging point crane. It is mainly characterized by that said hoisting mechanism includes the following several components: two sets of fixed pulley groups, balancing lever devices, two reels, speed reducer, trolley and trolley carrier, trolley running mechanism and brake system. Said invention also provides the concrete structure and composition of said brake system.

Description

technical field [0001] The invention belongs to hoisting and transporting machinery, in particular to a hoisting mechanism and a spreader of a large-tonnage single-suspension-point crane. Background technique [0002] At present, the common structure and layout of the hoisting mechanism of a crane is: a motor is connected to the high-speed shaft of the reducer through a coupling, and the low-speed shaft of the reducer drives a drum through a drum coupling. The upper pulley block and the movable pulley block take up or release the wire rope to make the spreader rise or fall. This arrangement is suitable for the lifting mechanism of medium and small cranes. For large-scale cranes with large lifting capacity and high motor power, this arrangement requires high rigidity of the trolley frame, relatively complicated manufacturing process, and the height of the trolley is large, making it difficult to select motors and wire ropes. [0003] Now there is a hoisting mechanism of a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C11/16B66C1/14
Inventor 李朗明魏双庆
Owner TAIYUAN HEAVY IND
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