CN217837981U

CN217837981U - Lifting device of wind turbine generator and wind turbine generator

Info

Publication number: CN217837981U
Application number: CN202221526215.3U
Authority: CN
Inventors: 苗向文; 陈雷; 黄强
Original assignee: Sinovel Wind Group Co Ltd
Current assignee: Sinovel Wind Group Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-18
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a wind turbine generator's elevating gear and wind turbine generator, include: the ladder stand is installed in a tower barrel of the wind turbine generator and is provided with a guide rail extending along the height direction; the car is movably connected to the guide rail; the driving mechanism comprises a traction main machine and a traction steel wire rope, the traction main machine is fixedly connected to the crawling ladder, one end of the traction steel wire rope is connected with the traction main machine, and the other end of the traction steel wire rope is connected with the lift car so as to drive the lift car to lift along the guide rail through the traction main machine; the fall arrest mechanism comprises a safety steel wire rope, a centrifugal fall arrester and a safety gear fall arrester, the centrifugal fall arrester is mounted on the car so that the safety steel wire rope passes through the centrifugal fall arrester, and the safety gear fall arrester is mounted on the car and is arranged to clamp the guide rail at a clamping position and to loosen the guide rail at a releasing position. The lifting device of the utility model has double anti-falling functions; the lifting speed of the lift car can be increased by adopting the traction main machine; the traction main machine is fixedly arranged on the ladder stand, so that the weight of the lift car can be reduced.

Description

Lifting device of wind turbine generator and wind turbine generator

Technical Field

The utility model relates to a wind power generation technical field particularly relates to a wind turbine generator system's elevating gear and wind turbine generator system.

Background

The lifting device in the tower barrel of the wind turbine generator is mainly used for replacing the traditional manual climbing form, can be used for carrying people and objects, can save trouble and labor, and greatly improves the working efficiency. The higher the tower barrel is, the more obvious the effect of the lifting device is, the lifting device can be widely applied to occasions where people and materials are frequently conveyed vertically and vertically, and can be used under various climatic conditions.

Along with the continuous increase of the single machine capacity of the wind turbine generator, the diameter of a wind wheel of the fan is larger and larger, the tower barrel of the fan is also higher and higher, and the height of the tower barrel and the working efficiency are improved to ensure the safety of the tower barrel lifting device when the operation speed is improved. The existing widely used tower tube climbing-free device and low-speed tower tube lifter (running speed 8-12 m/min) only have one driving steel wire rope and one safety steel wire rope, the lift car is installed on the safety steel wire rope through a centrifugal falling protector for falling prevention safety protection, and the safety performance is low.

A conventional hanging basket elevator driving host machine applied to the market at present adopts a crawling lifting structure, a single steel wire rope is used for traction, the load of the steel wire rope is high, and the abrasion is large. Driving motor and car adopt the integral type design, and car carry driving motor, it is integrative with drive arrangement, lead to the whole weight of car big to the car size is bigger than normal relatively, has certain requirement to tower section of thick bamboo inner space. The running speed is 9-11m/min, the lifting time is relatively slow, and the efficiency is general. The driving device is arranged at the top of the car, and the maintenance and overhaul processes are complex.

Therefore, it is desirable to provide a lifting device for a wind turbine and a wind turbine to at least partially solve the above problems.

SUMMERY OF THE UTILITY MODEL

A series of concepts in a simplified form are introduced in the summary section, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

In order to solve the above problem at least partially, according to the utility model discloses a first aspect provides a wind turbine generator system's elevating gear, includes:

the crawling ladder is installed in a tower cylinder of the wind turbine generator and is provided with a guide rail extending in the height direction;

a car movably connected to the guide rail;

the driving mechanism comprises a traction main machine and a traction steel wire rope, the traction main machine is fixedly connected to the crawling ladder, one end of the traction steel wire rope is connected with the traction main machine, and the other end of the traction steel wire rope is connected with the car so as to drive the car to ascend and descend along the guide rail through the traction main machine; and

the anti-falling mechanism comprises a safety steel wire rope, a centrifugal type anti-falling device and a safety gear anti-falling device, wherein the centrifugal type anti-falling device is arranged on the lift car, so that the safety steel wire rope penetrates through the centrifugal type anti-falling device, the safety gear anti-falling device is arranged on the lift car and is set to be clamped at a clamping position, the guide rail is clamped at a releasing position, and the guide rail is loosened at the releasing position.

Optionally, the drive mechanism comprises two haul cables.

Optionally, the traction main machine is installed at the bottom of the ladder stand, the lifting device further comprises a pulley block located above the ladder stand, and the traction steel wire rope is connected to the top of the car through the pulley block.

Optionally, the lifting device further includes a tensioning mechanism installed at the bottom of the ladder and located below the traction main machine, and the traction steel wire rope is connected to the top of the car through the tensioning mechanism and the pulley block in sequence.

Optionally, the upper end of the safety steel wire rope is fixed on the upper part of the ladder stand, and the lower end of the safety steel wire rope is fixed on the bottom of the ladder stand.

Optionally, the traction main machine is arranged to enable the running speed of the car to be 23-26m/min.

Optionally, the guide rail is integrally formed with the ladder stand.

Optionally, the centrifugal fall arrestor and the safety gear fall arrestor are each provided with a respective speed sensor.

Optionally, the car comprises rollers by which the car is connected to the guide rail such that the car can move up and down along the guide rail and is restricted from moving in a horizontal direction.

The utility model also provides a wind turbine generator system, wind turbine generator system includes above-mentioned elevating gear.

The utility model discloses a wind turbine generator system's elevating gear realizes dual anti-falling function through set up independent operation's centrifugal safety hook and safety tongs safety hook separately on the car, can accomplish through another one safety hook independently when one of them safety hook became invalid and prevent weighing down the operation. The driving mechanism adopts a traction main machine, has high reliability and can improve the lifting speed of the lift car. The traction main machine is fixedly arranged on the ladder stand, so that the split type design of the car and the driving main machine is realized, the external size and the weight of the car can be reduced, and the requirement on the internal installation space of the fan tower drum is relatively lower; simultaneously, the inner space of the lift car is relatively larger, and the lift car is more convenient and efficient under the same load.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings embodiments of the invention and the description thereof for the purpose of illustrating the devices and principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic side view of a lifting device of a wind turbine generator according to an embodiment of the present invention;

fig. 2 is a schematic rear view of a lifting device of a wind turbine generator according to an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a of fig. 1;

fig. 4 is a partially enlarged view of a portion B in fig. 2.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The present invention is described in detail below with reference to preferred embodiments thereof, however, the present invention can have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, and that the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only and are not limiting.

Ordinal words such as "first" and "second" are referred to in this application as labels only, and do not have any other meanings, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and do not limit the present invention.

The utility model provides a wind turbine generator's elevating gear and install this elevating gear's wind turbine generator. As shown in fig. 1-4, the lifting device of the present invention comprises a ladder 1, a car 2, a driving mechanism and a fall-preventing mechanism. The crawling ladder 1 is installed in a tower barrel of the wind turbine generator and is provided with a guide rail 11 extending in the height direction, and the bottom of the crawling ladder 1 can be fixed on a platform at the bottom of the tower barrel; the car 2 is movably connected to the guide rail 11; the driving mechanism comprises a traction main machine 3 and a traction steel wire rope 4, the traction main machine 3 is fixedly connected to the ladder stand 1, one end of the traction steel wire rope 4 is connected with the traction main machine 3, and the other end of the traction steel wire rope is connected with the lift car 2 so as to drive the lift car 2 to ascend and descend along the guide rail 11 through the traction main machine 3; the fall arrest mechanism comprises a safety wire rope 5, a centrifugal fall arrester 6 and a safety gear fall arrester 7, the centrifugal fall arrester 6 being mounted on the car 2 such that the safety wire rope 5 passes through the centrifugal fall arrester 6, the safety gear fall arrester 7 being mounted on the car 2 and arranged to grip the guide rail 2 in a gripping position and to release the guide rail 2 in a release position.

The utility model discloses a lifting device realizes dual anti-falling function through set up independent operation's centrifugal safety hook 6 separately and safety tongs safety hook 7 on car 2, can accomplish through another one safety hook independently when one of them safety hook became invalid and prevent weighing down the operation. When the descending speed of the lift car 2 exceeds the set speed of the centrifugal falling protector 6, the centrifugal falling protector 6 is locked on the safety steel wire rope 5 so as to prevent the lift car 2 from falling; the safety gear safety catch 7 is connected with the guide rail 2 and belongs to a rigid track safety catch, and when the descending speed of the car 2 exceeds the set speed of the safety gear safety catch 7, the safety gear safety catch 7 clamps the guide rail 11 so as to prevent the car 2 from falling. The safety gear falling protector of the utility model can adopt the safety gear falling protector used in the elevator of high-rise buildings.

The utility model discloses a elevating gear's actuating mechanism adopts and tows the host computer, and the reliability is high and can promote the lifting speed of car. In addition, the traction main machine 3 is fixedly arranged on the ladder stand 1, so that the split design of the lift car and the driving main machine is realized, the external size and the weight of the lift car can be reduced, and the requirement on the internal installation space of the fan tower is relatively lower; simultaneously, the inner space of the lift car is relatively larger, and the lift car is more convenient and efficient under the same load.

According to the utility model discloses an embodiment, actuating mechanism can include two haulage wire 4. Specifically, as shown in fig. 2, two traction cables 4 are symmetrically connected to the top of the car 2 to ensure that the two traction cables are equally stressed. Through setting up two and drawing wire rope, can further improve elevating gear's security.

According to the utility model discloses an embodiment, as shown in fig. 1 and fig. 2, traction main machine 3 can install in the bottom of cat ladder 1, and elevating gear still includes the assembly pulley 8 that is located cat ladder 1 top, and traction wire rope 4 is connected to the top of car 2 via assembly pulley 8. The traction main machine 3 is arranged at the bottom of the ladder stand 1 so as to be convenient for overhauling and maintaining the ladder stand. Each traction wire 4 may be supported by two sheaves spaced apart from each other at the same height, thereby avoiding stress concentration caused by single sheave support and facilitating the arrangement of the hoisting point position of the car. The top of the tower can be provided with a hanging beam 9 for installing the pulley block 8, so that the pulley block 8 is positioned above the top of the ladder stand 1 at a certain distance.

According to the embodiment of the present invention, as shown in fig. 1 and 2, the lifting device may further include a tensioning mechanism 10 installed at the bottom of the ladder stand 1 and located below the traction main machine 3, and the traction wire rope 4 is connected to the top of the car 2 via the tensioning mechanism 10 and the pulley block 8 in sequence. Through setting up the tight mechanism that rises, can arrange traction wire rope better, make the operation of car more stable.

According to the embodiment of the present invention, as shown in fig. 1 and 2, the upper end of the safety wire rope 5 is fixed on the upper portion of the ladder stand 1, and the lower end is fixed on the bottom of the ladder stand 2, thereby ensuring the reliability of the safety wire rope 5.

According to the embodiment of the utility model, the traction main machine can be set to make the running speed of the car 2 be 23-26m/min. Because current wind turbine generator system elevating gear's car functioning speed generally is 11-15m/min, the utility model discloses a car functioning speed improves nearly one time, can promote the operating efficiency by a wide margin.

According to the utility model discloses an embodiment, guide rail 11 can with cat ladder 1 integrated into one piece. In particular, as shown in fig. 1-4, the vertical beams of the ladder 1 can be used as guide rails, so that there is no need to install separate parts as guide rails on the ladder, resulting in a simplified structure and reduced costs.

According to the utility model discloses an embodiment, centrifugal safety hook 6 and safety tongs safety hook 7 can be provided with respective speedtransmitter respectively. For the centrifugal falling protector 6, when the speed sensor detects that the falling speed of the car 2 exceeds the set speed of the centrifugal falling protector 6, the centrifugal falling protector 6 is locked on the safety steel wire rope 5 so as to prevent the car 2 from falling; for the safety gear safety hook 7, when the speed sensor thereof detects that the descending speed of the car 2 exceeds the set speed of the safety gear safety hook 7, the safety gear safety hook 7 clamps the guide rail 11 so as to prevent the car 2 from falling. Preferably, the set speed of the centrifugal safety catcher 6 and the set speed of the safety gear safety catcher 7 can be set to be different, for example, the set speed of the centrifugal safety catcher 6 is set to be slightly less than the set speed of the safety gear safety catcher 7, so that when the car exceeds the normal running speed of the car, the centrifugal safety catcher 6 firstly performs the operation of locking the safety rope 5, and in the case that the car 2 can be stopped by the independent operation of the centrifugal safety catcher 6, the safety gear safety catcher 7 does not need to be started; if the centrifugal safety brake 6 fails, so that the lowering speed of the car 2 increases further to the running speed of the safety gear safety brake 7, the safety gear safety brake 7 initiates the operation of the clamping rail 11, so that a double safety brake function is achieved and superfluous operation is avoided. As an alternative, a speed sensor can be provided on the car 2, to which the centrifugal safety brake arrester 6 and the safety gear safety brake arrester 7 are each connected in communication.

According to an embodiment of the present invention, as shown in fig. 3 and 4, the car 2 may include rollers 21, and the car 2 is connected to the guide rail 11 through the rollers 21 so that the car 2 can move up and down along the guide rail 11 and is restricted from moving in a horizontal direction. Specifically, as shown in fig. 4, the roller 21 is configured such that the outer peripheral surface is recessed inward to form a recessed ring, so that the guide rail 11 is embedded in the recessed ring thereof, thereby restricting the movement of the car 2 in the X-axis direction. In addition, as shown in fig. 3, one roller 21 is provided on each side of the guide rail 11 in the Y-axis direction, so that the guide rail 21 is sandwiched between the two rollers 21 in the Y-axis direction, thereby restricting the movement of the car 2 in the Y-axis direction. Therefore, the car 2 can move up and down in the Z-axis direction only by the rollers 21 rolling on the guide rails 11.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component being directly attached to another component or one component being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that many more modifications and variations can be made in accordance with the teachings of the present invention, all of which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A lifting device of a wind turbine generator is characterized by comprising:

the ladder stand is installed in a tower barrel of the wind turbine generator and is provided with a guide rail extending in the height direction;

a car movably connected to the guide rail;

the driving mechanism comprises a traction main machine and a traction steel wire rope, the traction main machine is fixedly connected to the ladder stand, one end of the traction steel wire rope is connected with the traction main machine, and the other end of the traction steel wire rope is connected with the lift car so as to drive the lift car to ascend and descend along the guide rail through the traction main machine; and

2. The lift device of claim 1, wherein the drive mechanism includes two pull cables.

3. The hoisting device of claim 1 wherein the traction machine is mounted at the bottom of the ladder, the hoisting device further comprising a pulley block above the ladder, the traction wire rope being connected to the top of the car via the pulley block.

4. The lifting device as claimed in claim 3, further comprising a tensioning mechanism installed at the bottom of the ladder and located below the traction main machine, wherein the traction cable is connected to the top of the car through the tensioning mechanism and the pulley block in sequence.

5. The lifting device as claimed in claim 1, wherein the safety cable is fixed at its upper end to the upper part of the ladder stand and at its lower end to the bottom part of the ladder stand.

6. The hoisting device according to claim 1, wherein the hoisting machine is arranged so that the running speed of the car is 23-26m/min.

7. A lifting device as claimed in claim 1, characterised in that the guide track is formed integrally with the ladder.

8. The lifting device as claimed in claim 1, characterized in that the centrifugal fall arrester and the safety gear fall arrester are each provided with a respective speed sensor.

9. A hoisting device as claimed in any one of claims 1 to 8, characterized in that the car comprises rollers by means of which the car is connected to the guide rails such that the car can move up and down along the guide rails and is restricted from moving in a horizontal direction.

10. Wind power plant, characterized in that it comprises a lifting device according to any of claims 1-9.