WO2020248339A1

WO2020248339A1 - Detachable turner beam for turning wind turbine blade mould

Info

Publication number: WO2020248339A1
Application number: PCT/CN2019/097432
Authority: WO
Inventors: Wei Gu; Jialin LU
Original assignee: Gurit Tooling (Taicang) Co., Ltd.
Priority date: 2019-06-10
Filing date: 2019-07-24
Publication date: 2020-12-17
Also published as: CN212528412U; CN214646055U

Abstract

The utility model discloses a detachable turner beam for turning a wind turbine blade mould, including an upper beam (1), a lower beam (2) and a turner arm (3) connecting the upper beam (1) and the lower beam (2); the upper beam (1) includes a welded box upper beam (19), a lateral transition fixing plate (14) and a front and rear adjusting plates (13) which are respectively arranged at two ends of the welded box upper beam (19), and a longitudinal transition connecting fixing plate (15) and a longitudinal transition adjusting plate (16) installed on the upper beam (1); the lower beam (2) includes a welded box lower beam (21), a bearing bottom plate (22) and a level adjusting device (24) installed at both ends of the welded box lower beam (21), as well as a turner arm connecting plate group (23) fixed on the welded box lower beam (21), wherein the turner arm connecting plate group (23) is connected with one end of the turner arm (3). The turner beam is installed in a mould opened state, and the installation method is simple, high in strength and accuracy and low in cost.

Description

DETACHABLE TURNER BEAM FOR TURNING WIND TURBINE BLADE MOULD

TECHNICAL FIELD

The utility model relates to the field of wind turbine blade mould, in particular to a detachable turner beam for turning a wind turbine blade mould.

BACKGROUND

As a kind of clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. The global wind energy is about 2.74 x 10 ⁹MW, of which the available wind energy is 2 x 10 ⁷MW, which is 10 times larger than the total exploitable water energy on the earth. Wind has long been used by people, mainly by pumping water by windmill, grinding flour, etc. Now, people are interested in how to use wind to generate electricity. The principle of wind power generation is to use wind to drive the wind turbine blades to rotate, and then speed up the rotating speed through a speed-up machine to generate electricity. According to current wind power generation technology, a wind speed of about three meters per second can start generating electricity. Wind power generation is forming a boom in the world because it has no fuel problems and does not produce radiation or air pollution.

With the development of clean energy, the wind power industry has also developed rapidly. The megawatt level of wind turbine blades is increasing, the length of wind turbine blades has grown from the original more than 40 meters to the present more than 80 meters. As the length of wind turbine blades is getting longer and longer, so as the length of mould, and the webs of wind turbine blades are getting bigger and longer. The turner beam is a key structure in the mainstream wind turbine blade mould. There are about twelve turner beams in the mainstream wind turbine blade mould, including six upper beams in the upper mould and six lower beams in the lower mould. There are many drawbacks due to the presence of so many turner beams in the wind turbine blade mould. As the wind power generation gradually increases, the size of wind turbine blade mould is increasing, the size and the number of turner beams will increase, thus these drawbacks will become more and more prominent, and the analysis is as follows.

First, connection mode

At present, the basic connection mode of the turner beam in the mainstream wind turbine blade mould is direct welding, the turner beam needs to ensure the opening and closing of the upper and lower moulds, thus the position precision of the turner beam in the upper mould and lower mould needs to be within 1-2 mm. However, as the length of the wind turbine blade mould exceeds 60 meters, and the width and height exceeds 5-6 m, it is very difficult to ensure the opening and closing by welding. In the later stage, the inaccuracy will lead to abnormal noise of the turner arm, j itter of the mould during mould turning, misalignment during mould closing, etc.

Second, strength

The turner beam is the main stressed member, the material of the turner beam is generally steel with high yield strength, and the part of the mould steel frame connected to the turner beam is mostly Q345D steel, and many manufacturers use Q235B steel. After the mould is opened and closed for several times, these welded parts will be cracked, which is very dangerous.

Third, cost

The price of each set of wind turbine blade mould is very expensive, and the cost of manufacturing, installation and welding of turner beams accounts for a large proportion. Due to the rapid development of wind power industry, the life cycle of a set of wind power mould is 1-2 years on average, and a minority of moulds can be used for 3-4 years. If the turner beam can be reused, the manufacturing cost of wind power mould can be greatly reduced.

Fourth, installation state

At present, the mainstream wind turbine blade mould needs to be in closed state when installing the turner beam because the upper and lower turner beams shall be in the same plane and be parallel to each other, and the closing of the mould is very difficult and inaccurate before the turner beam is installed, especially in the case where the size of the mould is increased, the safety risk of closing the mould without installing the turner beam is increased.

SUMMARY

Purpose of the utility model: in order to solve the drawbacks of the prior art, the utility model provides a detachable turner beam for turning a wind turbine blade mould which is simple in installation, high in strength and accuracy and low in cost.

Solution: in order to realize the above purpose, the detachable turner beam for turning a wind turbine blade mould described in the utility model includes an upper beam, a lower beam, and a turner arm connecting the upper beam and the lower beam; the turner beam is installed in opened state of the wind turbine blade mould;

The upper beam includes: a welded box upper beam, a transverse transition fixing plate mounted on both ends of the welded box upper beam and a turner arm trunnion plate group mounted on the welded box upper beam and abutting the transverse transition fixing plate, and a longitudinal transition adjusting plate installed on the welded box upper beam, wherein a transverse transition adjusting plate is arranged above the transverse transition fixing plate, the front and rear adjusting plates are installed on the transverse transition fixing plate, and the longitudinal transition adjusting plate is installed with a longitudinal transition connecting fixing plate.

The lower beam includes: a welded box lower beam, a bearing bottom plate installed at the bottom of both ends of the welded box lower beam, and a turner arm connecting plate group and a level adjusting device fixed at both ends of the welded box lower beam respectively.

As a further preferred embodiment of the utility model, the two ends of the turner arm are respectively connected to the turner arm trunnion plate group and the turner arm connecting plate group.

As a further preferred embodiment of the utility model, the front and rear adjusting plates are fixed on the transverse transition fixing plate by bolts, when the installation of the upper beam deviates, the bolts are screwed in and out with respect to the transverse transition fixing plate, thereby driving the change of the position of the front and rear adjusting plates with respect to the transverse transition fixing plate, thereby compensating the front and rear positions of the whole upper beam to be moved by the movement of the front and rear positions of the adjusting plates.

As a further preferred embodiment of the utility model, the longitudinal transition connecting fixing plate and the longitudinal transition adjusting plate are installed together through bolts, and the longitudinal transition connecting fixing plate can be longitudinally moved relative to the longitudinal transition adjusting plate and the moving range is ± 50 mm.

As a further preferred embodiment of the utility model, the transverse transition adjusting plate is connected to the longitudinal transition adjusting plate.

As a further preferred embodiment of the utility model, the transverse transition adjusting plate fixed on the welded box upper beam is bolted to the transverse transition fixing plate.

As a further preferred embodiment of the utility model, the bolt connection is carried out by passing bolts through fixing bolt holes on the transverse transition adjusting plate and waist-shaped adjusting holes on the transverse transition fixing plate sequentially, and by manually pushing the transverse transition adjusting plate and the transverse transition fixing plate, so that the transverse transition adjusting plate moves transversely with respect to the transverse transition fixing plate.

As a further preferred embodiment of the utility model, the level adjusting device includes a screw rod and a nut, one end of the screw rod is arranged by passing perpendicularly to the bearing bottom plate, the bottom of bearing bottom plate is in hollow assembly, the other end of the screw rod is fixed on the end of the welded box lower beam, the nut is sleeved on the screw rod above the bearing bottom plate, and the screw rod is driven to support the welded box lower beam to move up and down with respect to the bearing bottom plate by rotating the nut.

As a further preferred embodiment of the utility model, the longitudinal transition connecting fixing plate and the upper mould are fixed together by means of screw connection.

As a further preferred embodiment of the utility model, the bearing bottom plate is fixed to the ground through expansion bolts or chemical anchor bolts.

As a further preferred embodiment of the utility model, the lower beam passes through the steel structure of the lower mould of the wind power mould and is not in contact with it.

As a further preferred embodiment of the utility model, the upper beam and the lower beam are respectively fixed to the upper mould and the lower mould in opened state of the wind turbine blade mould.

Beneficial effects: the detachable turner beam for turning a wind turbine blade mould of the utility model has the following advantages compared with the prior art:

1. It avoids the deformation and displacement of the lower mould of the wind turbine blade mould caused by the stress produced by the turner beam in the turning process in the prior art. The utility model passes through the steel structure of a lower mould through a lower beam, without contact with the steel structure, and is directly connected to the ground, to transfer all stresses to the ground, so that the stress does not need to be considered in the design of the lower mould of the wind turbine blade mould, which greatly reduces the risk of deformation and displacement. Without considering the above problem, the height of the lower mould can be reduced to the minimum, so that the overall height of the wind turbine blade mould can be reduced, thereby reducing the requirements for height of facilities and vehicles.

2. The upper mould turner beam is connected to the upper mould steel structure through a transition connection structure, changing from the original multiple-point connection to the present multiple-face connection, which better disperses the stress at the connection, to make longitudinal movement adjustment of ±50mm through the longitudinal transition adjusting plate and make transverse movement through the transverse transition adjusting plate, so as to quickly meet the installation requirements of the turner beam and greatly reduce the installation time;

3. The upper and lower turner beams are adjusted twice, and the installation accuracy requirements are fully met when the turner arm is replaced at the later stage.

4. The wind turbine blade mould is separated from the turner arm in the manufacture and transportation process, and the turner arm is a hydraulic system, which cannot be operated until it is completely installed, thus it is very difficult to debug the opening and closing mould at this time. The turner beam of the utility model has the hinge function itself, which can complete the debugging of the opening and closing mould easily with the help of crane;

5. The utility model is basically not limited by the shape of the blade, can be directly replaced and installed on all the existing mainstream blade moulds under the mould opening state, greatly reduces the manufacturing cost, has strong universality, and is more convenient and flexible in use.

DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic structural diagram of an upper beam;

FIG. 2 is a schematic structural diagram of a lower beam;

FIG. 3 is a schematic structural diagram of the utility model;

FIG. 4 is a schematic structural diagram of a mould closed state;

FIG. 5 is a schematic structural diagram of a mould opened state;

DETAILED DESCRIPTION OF EMBODIMENTS

The utility model is further explained below in connection with the drawings and the specific embodiments.

As shown in FIGS. 1 and 2, a detachable turner beam for turning a wind turbine blade mould of the utility model comprises an upper beam 1, a lower beam 2, and a turner arm 3 connecting the upper beam 1 and the lower beam 2;

The upper beam 1 includes: front and rear adjusting plates 13, a transverse transition fixing plate 14, a longitudinal transition connecting fixing plate 15, a longitudinal transition adjusting plate 16, a transverse transit ion adjusting plate 17 and a welded box upper beam 19, wherein the two transverse transition fixing plates 14 are mounted on both ends of the welded box upper beam 19, a turner arm trunnion plate group 10 abuts the transverse transition fixing plate 14 and is mounted on the welded box upper beam 19, four longitudinal transition adjusting plates 16 are mounted on the side of the welded box upper beam 19, the movable and fixable transverse transition adjusting plate 17 is provided above the transverse transition fixing plate 14, the front and rear adjusting plates 13 are mounted on the transverse transition fixing plate 14, and the longitudinal transition adjusting plate 16 and the longitudinal transition connecting fixing plate 15 are bolted together.

The lower beam 2 includes: a welded box lower beam 21, a bearing bottom plate 22 mounted at the bottom of both ends of the welded box lower beam 21, and a turner arm connecting plate group 23 and a level adjusting device 24 fixed at both ends of the welded box lower beam 21 respectively.

EMBODIMENTS

Step 1. Connecting the two ends of the turner arm 3 with the turner arm trunnion plate group 10 and the turner arm connecting plate group 23 respectively, wherein the bearing bottom plate 2 is fixed to the ground by expansion bolts or chemical anchor bolts, and the welded box lower beam 21 is extended into the steel structure of the lower mould 4 of the wind turbine blade mould, at which time the lower beam 2 is not in contact with the lower mould 4 and is at the mould opening position, as shown in FIG. 5, and then rotate the nut of the level adjusting device 24 to make the horizontal position of the welded box lower beam 21 reach a predetermined value;

Step 2. According to the steel structure position of the lower mould 4 and the upper mould 5d, adjusting the transverse, longitudinal, as well as front and rear positions of the upper beam 1;

when the transverse position is adjusted, loosening the bolts from the transverse transition adjusting plate 17 and the transverse transition fixing plate 14, and manually pushing the transverse transition adjusting plate 17, so that the transverse transition adjusting plate 17 can be moved laterally above the transverse transition fixing plate 14 relative to the transverse transition fixing plate 14; when the transverse transition adjusting plate 17 is moved to the defined position, using bolts to fix the transverse transition adjusting plate 17 on the transverse transition fixing plate 14;

when the longitudinal position is adjusted, fixing the longitudinal transition connecting fixing plate 15 to the longitudinal transition adjusting plate 16 by bolts, fixing the longitudinal transition connecting plate 15 to the steel frame of the upper mould 5, connecting four longitudinal transition adjusting plates 16 to the side of the welded box upper beam 19, longitudinally extending the longitudinal transition connecting fixing plate 15 and the longitudinal transition adjusting plate 16 so that the longitudinal connecting area is enlarged; dispersing the stress by bolt connection so that the longitudinal connection strength is increased, and compensating the longitudinal error generated in the installation process of the upper beam 1 and the upper mould steel frame by the installation reserve adjustment margin;

when the front and rear positions are adjusted, bolting the front and rear adjusting plates 13 to the transverse transition fixing plate 14; when the installation of the upper beam 1 deviates, screwing the screw 130 in and out with respect to the transverse transition fixing plate 14, thereby driving the change of the position of the front and rear adjusting plates 13 with respect to the transverse transition fixing plate 14, thereby compensating the front and rear positions of the whole upper beam 1 to be moved by the movement of the front and rear positions of the front and rear adjusting plates 13;

Step 3. When it is necessary to close the mould, the hydraulic cylinder being controlled to work by the electronic control unit, and the piston rod of the hydraulic cylinder pushing one end of the turner arm 3 and driving the upper beam 1 to rotate with respect to the lower beam 2, at which point, the upper beam 1 drives the upper mould 5 to close the mould to the lower mould 4 to complete the mould closing action, and the stress generated in the process is transmitted to the ground through the lower beam 2, as shown in FIG. 4.

The above embodiments are only for illustrating the technical conception and characteristics of the utility model, and the purpose of the embodiments are to enable a person skilled in the art to understand the content of the utility model and implement the same, and the protection scope of the utility model cannot be limited by the embodiments. Any equivalent transformation or modification made in accordance with the spirit of the utility model shall fall within the scope of protection of the utility model.

Claims

A detachable turner beam for turning a wind turbine blade mould, comprising: an upper beam (1) , a lower beam (2) , and a turner arm (3) connecting the upper beam (1) and the lower beam (2) ; the turner beam is installed in an opened state of the wind turbine blade mould;

the upper beam (1) comprises a welded box upper beam (19) , a transverse transition fixing plate (14) mounted on both ends of the welded box upper beam (19) and a turner arm trunnion plate group (10) mounted on the welded box upper beam (19) and abutting the transverse transition fixing plate (14) , and a longitudinal transition adjusting plate (16) mounted on the welded box upper beam (19) , wherein a transverse transition adjusting plate (17) is arranged above the transverse transition fixing plate (14) , the front and rear adjusting plates (13) are mounted on the transverse transition fixing plate (14) , and the longitudinal transition adjusting plate (16) is mounted with a longitudinal transition connecting fixing plate (15) ;

and the lower beam (2) comprises: a welded box lower beam (21) , a bearing bottom plate (22) installed at the bottom of both ends of the welded box lower beam (21) , and a turner arm connecting plate group (23) and a level adjusting device (24) fixed at both ends of the welded box lower beam (21) respectively.
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein both ends of the turner arm (3) are respectively connected to the turner arm trunnion plate group (10) and the turner arm connecting plate group (23) .
The detachable turner beam for turner a wind turbine blade mould according to claim 1, wherein the front and rear adjustment plates (13) are fixed to the transverse transition fixing plate (14) by bolts (130) .
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the longitudinal transition connecting fixing plate (15) and the longitudinal transition adjusting plate (16) are installed together by bolts, and the longitudinal transition connecting fixing plate (15) is longitudinally movable relative to the longitudinal transition adjusting plate (16) .
The detachable turner beam for turning a wind turbine blade mould according to claim 4, wherein the two ends of the transverse transition adjusting plate (17) are respectively connected to the longitudinal transition adjusting plate (16) .
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the transverse transition adjusting plate (17) fixed on the welded box upper beam (19) is bolted to the transverse transition fixing plate (14) .
The detachable turner beam for turning a wind turbine blade mould according to claim 6, wherein the bolt connection is carried out by passing bolts through fixing bolt holes on the transverse transition adjusting plate (17) and waist-shaped adjusting holes on the transverse transition fixing plate (14) sequentially, so that the transverse transition adjusting plate (17) moves transversely with respect to the transverse transition fixing plate (14) .
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the level adjusting device (24) comprises a screw rod and a nut, one end of the screw rod is arranged by passing perpendicularly to the bearing bottom plate (22) , the other end of the screw rod is fixed on the end of the welded box lower beam (21) , the nut is sleeved on the screw rod above the bearing bottom plate (22) , and the screw rod is driven to support the welded box lower beam (21) to move up and down with respect to the bearing bottom plate (22) by rotating the nut.
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the longitudinal transition connecting fixing plate (15) and the upper mould (5) are fixed together by means of screw connection.
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the bearing bottom plate (22) is fixed to the ground by expansion bolts or chemical anchor bolts.
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the turner arm (3) is connected to the hydraulic oil cylinder and the electronic control unit.
The detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the lower beam (2) passes through the steel structure of the lower mould (5) and is not in contact with the lower mould (5) .
A detachable turner beam for turning a wind turbine blade mould according to claim 1, wherein the upper beam (1) and the lower beam (2) are respectively fixed to the upper mould (5) and the lower mould (4) in a opened state of the wind turbine blade mould.