Crane used for maintenance of large-scale wind power equipment

A technology of wind power equipment and cranes, applied in the field of wind power equipment maintenance cranes, can solve the problems of high hoisting and transportation costs, long hoisting cycle, uneconomical, etc., achieve the effect of timely maintenance and repair, and eliminate potential safety hazards

Inactive Publication Date: 2008-07-23
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very uneconomical to have such equipment for backup in power plants, and the hoisting period is long, and the hoisting and transportation costs are high
Lifting technology using such a large mobile crane is inconvenient and expensive at the present stage in our country

Method used

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  • Crane used for maintenance of large-scale wind power equipment
  • Crane used for maintenance of large-scale wind power equipment
  • Crane used for maintenance of large-scale wind power equipment

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] A maintenance crane for large-scale wind power equipment as shown in Figures 1 to 4 includes: a steel structure 1, a lifting drive mechanism 2, a differential weight and variable magnification lifting rope system 3, a trolley and its traction and anti-sway device 4, The special spreader 5 and the electrical control system 6 are based on a driving unit, namely the lifting drive mechanism 2.1, and the special spreaders 5.1 to 5.4 are used by changing the winding mode of the rope, that is, paths I, II, III and IV, namely It can realize the normal lifting function of small parts in the nacelle, and can also meet the lifting needs of large and medium-sized parts during overhaul, and can also take into account the lifting needs of blades outside the nacelle.

[0034] The trolley in the present invention adopts a dual-drive traction device, which can not only pull the trolley to walk, effectively prevent the trolley from horizontal movement and jumping due to the shaking of the...

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PUM

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Abstract

The invention discloses a maintenance crane used for a large-size wind power device, comprising a steel structure, a raising drive mechanism, a special hanger and an electronic controlling system, wherein, the steel structure is arranged inside an engine room of the wind power device and is provided with the raising drive mechanism and a trolley as well as the traction and anti-shake device. The invention is characterized in that the crane also comprises a weight difference variable multiplying factor raising line which consists of a wire rope, a direction-changing assembly pulley, a trolley assembly pulley, a hanger assembly pulley, a fixed assembly pulley and a fixed point or a balancing device; one end of the wire rope is fixed on the raising drive mechanism, the other end of the wire rope is respectively connected to the special hanger by the weight difference variable multiplying factor raising line, the raising and the dropping of a weight are realized under the control of an electric control system. The invention can replace the existing ultra-large type mobile crane or the floating crane and provides an economic and safe hoisting method and a path for the large-size wind power device.

Description

technical field [0001] The invention relates to a crane specially suitable for a specific area or a special purpose, in particular to a crane for wind power equipment maintenance. Background technique [0002] When each wind power generation equipment distributed in the wind farm is put into operation, the indispensable regular maintenance and uncertain emergency repairs cannot be separated from the lifting equipment. [0003] In the prior art, the hoisting techniques applied to wind power generation equipment, mainly referring to the maintenance of blades and boosters in the engine room, generators, transformers, etc., usually have the following types: [0004] (1) Relying entirely on external cranes, it is mainly used for micro or small wind power generation equipment. [0005] (2) Self-contained small lifting equipment and external cranes. The engine room is equipped with a small electric maintenance crane with a lifting capacity of hundreds of kilograms, which is used f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C17/06B66C13/06B66D1/20F03D11/00F03D80/50
CPCY02E10/722Y02E10/72
Inventor 周秋生韩俊良刘银娥
Owner DALIAN HUARUI HEAVY IND GRP CO LTD
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