CN105984821A - Hoisting device used according to needs and used in wind power unit cabin - Google Patents

Abstract

The invention relates to an on-demand hoisting device in the cabin of a wind turbine, which mainly includes three parts: a crane bracket, a fixed electric hoist, and a temporary hoisting system. The crane bracket is composed of a pillar, a transverse beam and a longitudinal beam. The hoist is installed on the transverse beam of the crane bracket, and the temporary lifting system consists of a trolley installed on the longitudinal beams on both sides of the crane bracket, a dual-purpose beam fixed on the trolley at both ends, and a hand-push monorail installed on the dual-purpose beam. Composed of trolley and chain hoist. This on-demand lifting device can not only meet the needs of daily maintenance, but also meet the needs of maintaining heavier components such as yaw drives. The fixed electric hoist and the cancellation of the driving frame reduce the impact of the electric hoist shaking on the crane bracket and The impact of the nacelle cover improves the stability and safety of the unit.

Description

An on-demand hoisting device in the cabin of a wind turbine

technical field

The invention relates to an in-cabin hoisting device used in a large-scale wind power generating set.

Background technique

In large wind turbines, the crane structures required for maintenance in the nacelle are mainly single-girder cranes. The single-girder crane is composed of a driving beam, an electric chain hoist with a trolley, a driving longitudinal beam and a driving rail. When in use, the rollers of the crane walk on the longitudinal rail, and the electric hoist can move laterally. The electric hoist lifts the parts that need to be repaired to the lifting hole in the cabin and lowers them to the ground. When the electric hoist stops working, it needs to be fixed reliably. The structure in the form of single-girder crane is relatively complicated, and both the truck frame and the electric hoist can be moved. When the fan is running, the shaking of the chain box of the electric hoist will have an impact on the truck frame, and the truck frame will have an impact on the crane bracket and the engine room. If the frame and electric hoist are not fixed reliably, it will hit other components in the cabin, causing potential safety hazards.

Contents of the invention

In order to overcome the defects of high cost and relatively complex and unstable structure of the existing single-girder driving frame using the driving frame, the invention provides an on-demand hoisting device in the cabin of the wind turbine unit, which can not only meet the needs of daily maintenance, but also Meets the need to maintain heavier components such as yaw drives.

The technical solution adopted by the present invention to solve the technical problem is: the lifting device mainly includes three parts: a crane support, a fixed electric hoist, and a temporary lifting system. The fixed electric hoist is installed on the transverse beam of the crane bracket, and the temporary lifting system consists of a walking trolley installed on the longitudinal beams on both sides of the crane bracket, a dual-purpose beam fixed on both ends of the walking trolley, and a dual-purpose beam installed on the dual-purpose beam. It consists of a combination of a hand-push monorail trolley and a chain hoist.

The dual-purpose beam is fixed to the crane support and the nacelle cover during routine maintenance, and is fixed to the traveling trolley during maintenance of heavier parts.

The combination of the walking trolley, the hand-push monorail trolley and the chain hoist can be temporarily assembled in the engine room by using a fixed electric hoist during the maintenance of heavy parts, so as to be dismantled after maintenance.

By adopting an on-demand hoisting device in the wind turbine cabin of the present invention, when it is necessary to maintain heavy parts, the disassembly and assembly of the parts can be completed by assembling a temporary lifting system, and the fixed electric hoist can complete zero maintenance. Lifting of parts. Due to the cancellation of the driving frame and the running track of the driving frame, the structure of the crane bracket is simplified, and the maintenance cost is reduced. At the same time, due to the use of a fixed electric hoist, the impact of the shaking of the electric hoist on the crane bracket and the nacelle cover is reduced, and the safety is improved. Stability and safety of the lifting device.

Description of drawings

The accompanying drawing is a structural schematic diagram of a hoisting device in the cabin of a wind turbine used on demand.

In the figure: 1. pillar; 2. walking trolley; 3. longitudinal beam; 4. fixed electric hoist; 5. transverse beam; 6. dual-purpose beam;

detailed description

The present invention will be further described below in conjunction with accompanying drawing.

The figure shows a structure of an on-demand hoisting device in the cabin of a wind turbine, which mainly includes three parts: a crane bracket, a fixed electric hoist 4, and a temporary lifting system. The crane bracket consists of a pillar 1 installed in the nacelle , transverse beam 5 and longitudinal beam 3, the fixed electric hoist 4 is installed on the transverse beam 5 of the crane support, and the temporary lifting system is composed of the walking trolley 2 installed on the longitudinal beam 3 on both sides of the crane support, and the two ends are fixed on the walking The dual-purpose beam 6 on the trolley 2, the hand-push monorail trolley and the chain hoist combination 7 installed on the dual-purpose beam 6 are composed.

In the case of daily maintenance, the maintenance articles are hoisted by the fixed electric hoist 4 . When heavy parts need to be maintained, the traveling trolley 2, the hand-push monorail trolley and chain hoist combination 7, as well as new parts and maintenance tools are hoisted into the engine room through the fixed electric hoist 4. The walking trolley 2, the hand-push monorail trolley and the chain hoist combination 7 belong to the parts used on demand, and are usually placed in the tool warehouse of the wind farm. One wind farm only needs to configure 1 to 2 sets. The dual-purpose beam 6 is bolted to the longitudinal beam 3 of the crane support when it leaves the factory, and is connected and fixed with the nacelle cover by an elastic support. When removing the parts that need to be maintained, remove the bolts connecting the dual-purpose beam 6 with the nacelle cover and the pillar 1 at the same time, install the traveling trolley 2 on the longitudinal beam 3 of the crane support, and fix the two ends of the dual-purpose beam 6 on the traveling trolley 2 , and then the hand-push monorail trolley and chain hoist combination 7 are installed below the dual-purpose beam 6 to form a temporary crane.

Use a temporary crane to hoist the parts that need to be removed and replaced to the vicinity of the fixed electric hoist 4, and then hoist the new parts to the installation location for installation. After installing the new parts, use the temporary crane to transport the removed parts to The fixed electric hoist 4 can be hoisted, and then remove the parts used on demand, the dual-purpose beam 6 is restored to the fixed mode, and finally use the fixed electric hoist 4 to remove the parts used on demand, maintenance tools and removed parts Lift to the ground.

Although the present invention has been described in conjunction with specific embodiments, substitutions, modifications and changes based on the above descriptions will be apparent to those skilled in the art. Therefore, when such substitutions, modifications and changes fall within the spirit and scope of the claims of the present invention, they should be included in the present invention.

Claims (3)

1. boom hoisting in the Wind turbines cabin of an on-demand use, in Large-scale Wind Turbines, it is characterized in that: this boom hoisting mainly includes crane support, fixing type electric calabash, interim three parts of tackling system, wherein crane support is by the pillar being arranged in cabin, transverse beam and longitudinal beam composition, fixing type electric calabash is arranged in the transverse beam of crane support, interim tackling system is by the walking dolly being arranged on the longitudinal beam of crane support both sides, the dual-purpose crossbeam that two ends are fixed on walking dolly, the hand push monorail trolley being arranged on dual-purpose crossbeam and chain block combination composition.

Boom hoisting in the Wind turbines cabin of a kind of on-demand use the most according to claim 1, it is characterised in that: described dual-purpose crossbeam is fixed with crane support and engine room cover during regular maintenance, is fixed on walking dolly during safeguarding heavier parts.

Boom hoisting in the Wind turbines cabin of a kind of on-demand use the most according to claim 1, it is characterized in that: described walking dolly, hand push monorail trolley and chain block combination can utilize fixing type electric calabash to assemble in being lifted to cabin during safeguarding heavier parts temporarily, in order to remove after maintenance.