A method for lifting a nacelle

A nacelle and lifting beam technology, applied in the field of hoisting the nacelle, can solve problems such as difficult control of the inclination angle of the nacelle, aggravating the inclination of the nacelle, damage to mechanical equipment, etc., to achieve the effect of guaranteeing the lifting effect, realizing equal distribution, and reducing the cost of unloading

Active Publication Date: 2018-05-18
POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, since the hoisting sling for the nacelle is specially designed for hoisting the nacelle in place, one hoisting chain is used for the two hoisting points at the front of the nacelle, and one hoisting chain is used for the two hoisting points at the rear of the nacelle. It is used for single-machine hoisting. If two cranes are used for double-machine lifting, crane collisions will easily occur, resulting in damage to mechanical equipment. In addition, when multiple machines are lifted, it is difficult to control the tilt angle of the cabin. If one side is heavier , and the operator is not aware of this problem, it is easy to make the car crane tilt, and in severe cases, the cabin of the hanger is tilted and damaged; and the wind in the cabin is relatively strong, and the use of a lifting chain is easy to aggravate the tilt of the cabin

Method used

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  • A method for lifting a nacelle
  • A method for lifting a nacelle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for lifting a nacelle, providing a lifting beam, one side surface of the lifting beam is provided with a first hook and a first ring for connecting with a hook of a hoisting machine, the number of the first hook and the first ring Similarly, the first hook and the first ring are arranged symmetrically with respect to the vertical axis of the lifting beam, and a second hook or a second ring for fixing to the engine room is provided on the other side of the lifting beam relative to the hook;

[0037] Arrange at least three lifting points on the base of the generator in the engine room,

[0038] Install at least two lifting machines on the side of the engine room carrier vehicle, each lifting machine is connected to the lifting beam through the first hook or the first ring, and the second hook or the second ring is provided with a connecting rope for connecting with the lifting point Fixed, lift the lifting beam from the ground and turn it to the top of the engine...

Embodiment 2

[0041] Such as figure 1 and figure 2 As shown, a method for hoisting the nacelle, providing a hoisting beam, one side surface of the hoisting beam is provided with two first left hoisting rings A and first right hoisting hoops B for connecting with hoisting mechanical hooks, and the two The other is set at a set distance, and each of them can be replaced by the first hook. The first hook or the first ring is arranged symmetrically with respect to the vertical axis of the lifting beam. On the other side of the lifting beam relative to the hook A second hook or second ring C for fixing to the engine room is provided; when in use, the first hook or the first ring is arranged on the upper surface of the lifting beam, and the second hook or the second ring C is arranged on the upper surface of the lifting beam. The lower surface of the hanging beam, the first suspension ring and the second suspension ring are connected with the lifting beam by welding.

[0042]Wherein, in order ...

Embodiment 3

[0048] The difference between this embodiment and Embodiment 1 is: the hook of the hoisting machine is fixed to the first hook or the first ring by a wire rope or a chain cable, the second hook or the second ring is fixed to one end of the chain cable, and the other end of the chain cable is fixed. It is fixed with the lifting point of the generator base, and the chain cables are provided with at least three, preferably four.

[0049] Wherein, the lifting points on the base of the generator are arranged symmetrically.

[0050] In order to further ensure the stability of the suspension of the nacelle, the horizontal distance between the first suspension ring and the end face of the lifting beam is 1 / 12 to 1 / 8 of the length of the lifting beam.

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Abstract

The invention discloses a method for lifting a cabin. In the method, a lifting beam is provided, at least two first lifting hooks or first lifting rings used for being connected with lifting machine hooks are arranged on the surface of one side of the lifting beam, the first lifting hooks or first lifting rings are symmetrically arranged relative to the vertical axis of the lifting beam, and second lifting hooks or second lifting rings fixed to the cabin are arranged on the other side, relative to the side with the lifting hooks, of the lifting beam; through the arrangement that openings of the first lifting hooks are far away from the vertical center line of the lifting beam, the situation that the lifting beam slips relative to a crane is effectively avoided; by means of the arrangement of the above lifting system, the structure is simple, lifting of the cabin with the weight larger than 80 t is effectively guaranteed, multi-machine lifting is achieved, the sufficient safety distance between the two lifting machine hooks is guaranteed, crane collision generated in the traditional double-machine lifting process is avoided, and the unloading cost is reduced.

Description

technical field [0001] The invention relates to the wind energy industry, in particular to a method for lifting a nacelle. Background technique [0002] At present, my country's wind energy industry is in a stage of rapid development. With the continuous increase of unit capacity, the weight of each component of the wind turbine, especially the engine room, is getting heavier and heavier. The wind turbine equipment comes from different parts of the country, especially the engine room, hub, and blades may be far away from the wind field. In order to ensure the continuity of on-site construction operations, the wind turbine equipment needs to be transported to the site in advance and unloaded. [0003] In general, the weight of the nacelle of a 2.0MW doubly-fed wind turbine generator set is over 80t. To unload the truck using the special unloading spreader provided by the wind turbine equipment manufacturer, a truck crane with a rated lifting capacity of over 150t is required....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C1/10
CPCB66C1/108
Inventor 于景龙安利华杨政罗强
Owner POWERCHINA SEPCO1 ELECTRIC POWER CONSTR CO LTD
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