CN207108418U - Turning tool for wind-driven generator - Google Patents

Abstract

The utility model provides a turnover tool for a wind-driven generator. The turn-over tool for a wind-driven generator comprises: a workbench, including an upper panel; a mounting base, rotatably installed on the upper panel; a telescopic device, Installed between the workbench and the installation base, the installation base can be rotated relative to the upper panel, and the installation base includes an installation frame for fixing the wind power generator. According to the exemplary embodiment of the utility model, the safety factor can be improved, the cost of the hook can be reduced, and the working efficiency can be improved.

Description

Turning tooling for wind turbines

technical field

The utility model relates to the field of wind power generation, in particular to a turning tool for a wind power generator.

Background technique

In the wind power industry, permanent magnet direct drive is the most integrated form of wind power generator, so most wind power generators use permanent magnet direct drive wind power generators. The performance of the permanent magnet direct drive wind turbine directly determines the generating capacity of the unit, so in the process of unit development, it is essential to conduct type tests on the test bench for the permanent magnet direct drive wind turbine. However, the permanent magnet direct drive wind turbine generally has a cylindrical shape, and it is particularly difficult to hoist and turn over it.

For small-capacity units, lifting lugs are generally provided on the generator rotor casing to turn over the motor. The disadvantages of this structure are large deformation of the rotor and difficult design of the stator-rotor air gap. For units with a capacity of more than 3MW, especially 6MW generators, the weight generally exceeds 100 tons, or even 150 tons. If the turning lugs are installed on the rotor casing of the generator, the strength of the lugs is high and the air gap between the stator and the rotor is difficult to meet. According to the design requirements, it is generally installed on the end face of the generator shaft to turn over the generator, and use a mechanism such as a crane to turn the generator to a nearly vertical state (for example, turn it into a state at an angle of 83 degrees to the ground), and then dock it to the engine room .

At present, the overturning work of large-capacity units is carried out through the cooperation of the overturning spreader and two 200-ton hooks. After receiving the different positions of the turn-over spreader, first use a 200-ton hook to lift the wind turbine, and stop it after hoisting to a specific position, and then slowly lift another 200-ton hook to make the wind turbine slow down. Turn over slowly, and install it to the cabin after turning over to a predetermined angle.

The shortcomings of the existing scheme mainly lie in: (1) Due to the heavy weight of the permanent magnet direct drive wind turbine, for example, a 6MW generator weighs more than 140 tons, so there is a requirement for the tonnage of the driving, and there must be two hooks , and the rated load of the two hooks must be greater than the sum of the weight of the generator and the turning spreader, otherwise the turning operation will not be possible; (2) The hook configuration for normal driving is a large-tonnage hook and a small-tonnage hook, if The cost of configuring two 200-ton hooks at the same time is high, and the lifting speed of the 200-ton hooks is slow, which affects the use efficiency of the driving; (3) The shortest distance between the two hooks is limited. For smaller generators, the two slings of the crane will be pulled and slanted, and the safety is low.

Utility model content

The purpose of the utility model is to provide a turnover tool for wind-driven generators, which reduces the cost of hooks required for the turn-over of the wind-driven generator, improves the turn-over efficiency and improves the safety of the turn-over of the wind-driven generator.

According to one aspect of the present utility model, there is provided a turn-over tool for a wind-driven generator, the turn-over tool for a wind-driven generator comprising: a workbench, including an upper panel; a mounting base, rotatably mounted on the On the panel; a retractable device, installed between the workbench and the installation base, can make the installation base rotate relative to the upper panel, wherein the installation base includes a mounting bracket.

The telescopic device includes a pair of telescopic arms, the telescopic arms can be telescopic along their length direction, the upper end and the lower end of the telescopic arms are respectively rotatably connected to the installation base and the workbench, through Telescoping of the telescopic arm enables the mounting base to rotate relative to the upper panel.

The installation base also includes a support frame, the installation frame is arranged on the support frame, the support frame includes a pair of rotating beams, the first ends of the rotating beams are rotatably connected to the workbench, the The second end of the rotating beam is rotatably connected to the upper end of the telescopic arm.

The workbench further includes a plurality of support legs for supporting the upper panel and a reinforcing beam connected between the plurality of support legs, the lower end of the telescopic arm is rotatably connected to the plurality of support legs One of the legs or the reinforcing beam.

A surface of the rotating beam on which the telescopic arm is mounted has a predetermined angle with respect to the upper panel, and the predetermined angle is in a range of 30° to 60°.

The support frame further includes a pair of curved beams curvedly extending from the second end of the rotating beam to the same level as the first end of the rotating beam, and formed between the pair of rotating beams and the A connecting beam between the pair of curved beams and connecting the pair of rotating beams and the pair of curved beams respectively.

The rotating beams are respectively formed on both sides of the support frame, and the mounting frame is separated from the rotating beam by a predetermined distance.

The joint plate is formed in a ring shape or a discontinuous ring shape to correspond to the shape of the stator or rotor of the wind power generator, and the plurality of reinforcement members are formed under the joint plate so that The combination plate is separated from the supporting frame by a predetermined distance.

The mounting bracket further includes an auxiliary mounting plate formed under the plurality of reinforcement members.

At least one circle of connecting holes is arranged on the connecting plate.

An angle indicator is provided at the connection point between the installation base and the workbench to indicate the rotation angle of the installation base.

According to the exemplary embodiment of the utility model, the risk of the wind power generator turning over can be reduced, the safety performance can be improved, the cost of the hook can be reduced, and the working efficiency can be improved.

Description of drawings

Fig. 1 is a schematic structural view of a turning tool for a wind generator according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of a mounting base according to an embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the connection between a wind generator equipped with a stand-up spreader and a stand-up tool according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of the connection structure between the wind turbine installed with the turnover spreader and the turnover tool when the turnover reaches a specified angle.

Explanation of reference signs:

10-workbench; 30-installation base; 11-upper panel; 9-extensible arm, hydraulic cylinder; 91-outer cylinder; 92-inner cylinder; 5-turning spreader; 6-support seat; 321-connection hole; 2-wind generator; 32-connecting beam; 33-rotating beam; 35-bending beam; 12-supporting leg; 13-strengthening beam; 310-supporting frame; 320-installation frame; Component; 325-combining plate; 23-hook connection point; 24, 25-lug block; 26-reinforcing rib; 51-long side; 52-short side; 3-bolt flange on the impeller side.

Detailed ways

Embodiments of the utility model are described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of a turning tool for a wind generator according to an embodiment of the present invention; Fig. 2 is a schematic diagram of an exploded structure of a mounting base according to an embodiment of the present invention.

Referring to Fig. 1 and Fig. 2, according to an embodiment of the utility model, the turnover tool for a wind power generator may include: a workbench 10 including an upper panel 11; a mounting base 30 rotatably mounted on the upper panel of the workbench 10 11 : the retractable device is installed between the workbench 10 and the installation base 30 , and can make the installation base 30 rotate relative to the upper panel 11 . Wherein, the installation base 30 includes an installation frame 320 for fixing the wind generator 2 so as to install the wind generator 2 . After the wind power generator 2 is installed on the installation frame 320, the wind power generator 2 can be turned over by turning over the installation base 30, which will be described in detail below.

The telescopic device includes a pair of telescopic arms 9 that can be telescopic along its length, and the upper and lower ends of the telescopic arms 9 are rotatably connected to the mounting base 30 and the workbench 10 respectively. The mounting base 30 rotates relative to the upper panel 11 .

The telescopic arm 9 can be realized as a hydraulic cylinder 9 , the outer cylinder 91 of which can be connected to the table 10 , and the inner cylinder 92 of the hydraulic cylinder 9 can be connected to the mounting base 30 . In this way, by adjusting the hydraulic pressure of the hydraulic cylinders 9 , the inner cylinders 92 of the pair of hydraulic cylinders 9 can expand and contract synchronously with respect to the outer cylinders 91 , so as to realize the overturning of the mounting base 30 .

The installation base 30 may include a support frame 310 , and the installation frame 320 for installing the wind power generator 2 is arranged on the support frame 310 . The support frame 310 can also include a pair of rotating beams 33, the first end of the rotating beam 33 is rotatably connected to the upper panel 11 of the workbench 10, and the second end of the rotating beam 33 is rotatably connected to the inner cylinder of the hydraulic cylinder 9 92 (that is, the upper end of the hydraulic cylinder 9). In this way, the first ends of the pair of rotating beams 33 can serve as the fulcrum of the mounting base 30 to turn the mounting base 30 around the axis formed by the first ends of the pair of rotating beams 33 .

The workbench 10 includes a plurality of support legs 12 for supporting the upper panel 11 and reinforcing beams 13 connected between the plurality of support legs 12 . In this way, the outer cylinder 91 of the hydraulic cylinder 9 (ie, the lower end of the hydraulic cylinder 9) can be rotatably connected to one of the plurality of support legs 12 or the reinforcement beam 13, only the connection to the reinforcement beam 13 is shown in the drawings. Beam 13, but not limited thereto.

In addition, as shown in Figure 1, in order to realize the connection of the telescopic arms 9, openings can be formed on the upper panel 11 of the workbench 10, and the positions of the openings correspond to a pair of telescopic arms 9 respectively. , a pair of telescopic arms 9 are located on both sides of the table 10, so the upper panel 11 includes two openings formed on both sides thereof. However, the size and shape of the opening may be determined according to the range of motion of the telescopic arm 9 without particular limitation.

The surface of the swivel beam 33 on which the hydraulic cylinder 9 is mounted has a predetermined angle with respect to the upper panel 11, and the predetermined angle may preferably be in the range of 30° to 60°. In addition, in the initial state (unextended state) of the hydraulic cylinder 9 , the hydraulic cylinder 9 and the swivel beam 33 may be substantially perpendicular to each other, so as to apply force to the swivel beam 33 .

The reason why the included angle between the surface on which the rotating beam 33 is installed with the hydraulic cylinder 9 and the upper panel 11 is in the range of 30° to 60° is that if the included angle between the rotating beam 33 and the upper panel 11 is less than 30°, Then it may affect the space required for installing the hydraulic cylinder 9; if the angle between the rotating beam 33 and the upper panel 11 is greater than 60°, the hydraulic cylinder 9 needs to provide a larger driving force and extend a longer length to realize wind power generation However, under normal circumstances, the maximum length of the hydraulic cylinder 9 after it is extended is twice the length when it is not extended (initial state), if the angle of inclination of the swivel beam 33 is greater than 60 °, it may be difficult to realize the flip angle required by the wind turbine 2 through the hydraulic cylinder 9.

In addition, in addition to the inclined portion used to connect with the inner cylinder 92 of the hydraulic cylinder, the swivel beam 33 also includes a horizontal portion substantially parallel to the upper panel 11, that is, the first end of the swivel beam 33 can be an extended horizontal portion, so that To realize the connection between the installation base 30 and the workbench 10 . As shown in Figures 1 and 2, the first end of the rotating beam 33 can be in a "U" shape, and an inverted "T"-shaped support seat 6 can be installed on the upper panel 11, and the "U" shape of the rotating beam 33 can be The ""-shaped end is placed on the outside of the inverted "T"-shaped support base 6, and the two are connected through a pivot, so that the rotatable connection between the above-mentioned installation base 30 and the workbench 10 can be realized.

In addition, the connection between the hydraulic cylinder 9 and the rotating beam 33 and the reinforcing beam 13 can also adopt a similar structure, which will not be repeated here. However, the rotatable connection structure between the two components is not limited thereto, as long as the rotatable connection structure between the two components is feasible.

In addition, as shown in FIG. 2 , the support frame 310 also includes a pair of curved beams 35 extending curvedly from the second end of the rotating beam 33 to the same horizontal plane as the first end of the rotating beam 33, that is, at the initial stage of turning over the tooling In this state, a pair of curved beams 35 extending from the second ends of a pair of rotating beams 33 contact the upper panel 11 of the workbench 10 after bending, and each rotating beam 33 and corresponding bending beams 35 can be formed as shown in the figure. The trapezoidal-arched shape shown in 2 provides sufficient space for the installation of the hydraulic cylinder 9. In addition, the support frame 310 also includes a connecting beam 32 formed between the pair of rotating beams 33 and a pair of bending beams 35 and connecting the pair of rotating beams 33 and the pair of bending beams 35 respectively, as shown in FIG. 2 As shown, the connecting beam 32 can be welded by a plurality of connecting steel beams, and welded with the rotating beam 33 and the bending beam 35 to form a supporting frame 310 .

A pair of rotating beams 33 can be respectively formed on both sides of the support frame 310, in this case, the installation frame 320 is separated from the pair of rotating beams 33 by a predetermined distance, so as to prevent the wind turbine 2 from colliding with the rotating beams 33. put one's oar in.

The mounting frame 320 may include a coupling plate 325 and a plurality of reinforcing members 322 , and the coupling plate 325 may be formed in a ring shape or a discontinuous ring shape to correspond to the shape of a stator or a rotor of the wind power generator 2 . A plurality of reinforcement members 322 may be formed under the coupling plate 325, so that the coupling plate 325 is separated from the support frame 310 by a predetermined distance, thereby preventing the support frame 310 from interfering with the rotor or stator located on the outside of the wind turbine 2 , which is an important factor for the wind turbine 2. Provide space for installation.

The outer diameter of the mounting frame 320 may be smaller than the inner diameter of the rotor of the wind power generator 2 , and the inner diameter thereof is smaller than the inner diameter of the stator of the wind power generator 2 . The reason for this design is: when the wind power generator 2 is a permanent magnet direct drive wind power generator, the stator is usually arranged inside the rotor, and the air gap between the stator and the rotor is very small (about several millimeters). In addition, the rotor is suspended in the air, and if the rotor is impacted by an external force, it will be easily damaged. The above-mentioned structure of the mounting frame 320 can prevent the rotor from being affected by external force. However, the shape of the mounting frame 320 is not limited thereto, as long as the stator of the wind power generator 2 can be mounted without interfering with the rotor of the wind power generator 2 .

In addition, the above only describes the situation when the stator of the wind power generator 2 is located inside the rotor, and the wind power generator 2 also has a situation where the rotor is located inside the stator. In this case, the mounting bracket 320 can be formed as a The shape of the rotor is corresponding, and the rotor of the wind power generator 2 is installed on the turning tool for the wind power generator.

The mounting frame 320 may further include an auxiliary mounting plate 323 formed under the plurality of reinforcing members 322 to facilitate connection between the mounting frame 320 and the support frame 310 . The auxiliary mounting plate 323 may be formed in the same shape as the mounting frame 320 , but the shape of the auxiliary mounting plate 323 is not limited thereto as long as connection between the plurality of reinforcement members 322 and the support frame 310 can be achieved.

In addition, at least one circle of connecting holes 321 can be formed on the connecting plate 325 to connect different models of wind power generators. As an example, three circles of connection holes 321 with different diameters are formed on the coupling plate 325 according to the embodiment, and the outermost circle to the innermost circle can be respectively used for installing 6MW, 3MW, and 2MW permanent magnet direct-drive wind turbines.

According to the embodiment of the utility model, the turnover tooling for wind power generators can also include an angle indicator (not shown), and the angle indicator can be installed on the rotating beam 33, for example, as shown in Figure 1, the angle indicator Can be installed at the end of the rotating beam 33 to record the rotation angle of the mounting base 30 .

Fig. 3 is a schematic diagram of the structure of the connection between the wind-driven generator with the turn-over sling and the turn-over frock according to the embodiment of the present invention; Schematic diagram of the connection structure. Referring to Fig. 3 and Fig. 4, the process of turning over the wind power generator by using the turning over tool for the wind power generator according to the embodiment of the present utility model will be described below.

Firstly, the turnover spreader 5 used for the turnover work of the wind turbine 2 is introduced. As shown in Fig. 3, the stand-up spreader 5 is L-shaped as a whole, and the long side 51 of the L-shaped stand-up spreader 5 is formed with lug blocks 24 and 25 connected with the wind power generator 2, and the lug blocks 24 and 25 pass through Fasteners such as bolts are connected to the bolt flange 3 on the impeller side of the wind turbine 2, and a hook connection point 23 is formed on the short side 52 of the L-shaped turning spreader 5, which is used to connect to the lifting hook after the turning work is completed. (not shown).

The long side 51 of the stand-up sling 5 is also formed with reinforcing ribs 26 , and the reinforcing ribs 26 can form a triangular shape with a part of the long side 51 , thereby strengthening the strength of the turn-over sling 5 . In addition, the reinforcing rib 26 can also be connected with the hook to realize the translation of the wind-driven generator 2. For example, when the wind-driven generator 2 is installed on the turning tool for the wind-driven generator, the reinforcing rib 26 can be used as the hook hanging point. The shape of the rib 26 is not limited to the shape described here, and any shape that can achieve the above-mentioned functions is feasible.

As mentioned above, after the wind-driven generator 2 and the stand-up suspender 5 are assembled, the hook can be connected to the reinforcing rib 26, and then the wind-driven generator 2 is hoisted to the assembled turn-over tool for the wind-driven generator, and then Carry out the connection between the wind-driven generator 2 and the turn-over frock for the wind-driven generator (the connection between the suspension hook and the reinforcing rib 26 can be removed at this moment). If the wind power generator 2 is an inner stator and an outer rotor, the stator of the wind power generator 2 is connected to the joint plate 325 by bolts, otherwise, the rotor of the wind power generator 2 is connected to the joint plate 325 . Taking the case where the wind power generator 2 is an inner stator and an outer rotor as an example, use the mounting holes (not shown) formed on the stator and a circle of connection holes 321 formed on the connecting plate 325 to connect the two with bolts. , to complete the connection between the wind turbine 5 and the turning tool, as shown in FIG. 3 .

After the connection between the wind-driven generator 2 and the stand-up tooling is completed, start the hydraulic cylinder 9, increase the hydraulic pressure, make the inner cylinder 92 of the hydraulic cylinder 9 stretch out, push the installation base 30 to turn over, and then drive the wind-driven generator 2 to turn over together, and the angle indication The indicator can indicate the current turning angle of the wind turbine 2.

When the angle indicator indicates that the wind-driven generator 2 turns over and reaches the specified angle (that is, the installation angle) (as shown in Figure 4), the hydraulic cylinder 9 is kept hydraulically constant, and the hook is connected to the hanging hook on the turning spreader 5. Hook the connecting point 23, and then remove the connection between the wind-driven generator 2 and the turning tool used for the wind-driven generator. Afterwards, the wind power generator 2 is hoisted by a hook, and then installed on a gearbox (not shown) located at a nacelle (not shown).

In addition, when the overturning spreader 5 and the wind turbine 2 are hoisted by the hook together, the structural design of the overturning spreader 5 can satisfy that when it is assembled with the wind turbine 2 and turned to a specified angle, the direction of the overall center of gravity is vertical, that is, it can The wind turbine 2 is kept at a predetermined inclination angle to be installed on the nacelle. Specifically, the structural design of the turnover spreader 5 corresponding to the wind turbines 2 of different models is different, so as to meet the requirement of turnover. In addition, the above-mentioned reinforcing ribs 26 can act as a counterweight to the overturning spreader 5 to meet this requirement.

After finishing turning over the wind-driven generator 2 and removing the wind-driven generator 2, reduce the hydraulic pressure of the hydraulic cylinder 9, and the inner cylinder 92 of the hydraulic cylinder 9 is retracted, so that the mounting base 30 returns to the initial position, and the installation of the wind-driven generator 2 is completed so far. Turn over and work.

As mentioned above, using the turnover tool for wind turbines according to the utility model, only one hook can be used to realize the turnover work of the wind turbine, thereby reducing the risk of using two hooks to turn over and improving safety performance , and reduce the cost of the hook, avoid the problem of generator skew when using two hooks, and improve work efficiency.

Although the exemplary embodiment of the present utility model has been described in detail above, those skilled in the art should understand that without departing from the principle and spirit of the present utility model, various modifications and improvements can be made to the embodiment of the present utility model. transform. However, it should be understood that in the eyes of those skilled in the art, these modifications and variations will still fall within the scope of the present invention defined by the claims.

Claims (11)

1. A stand-up frock for wind-driven generator, characterized in that, the turn-over frock for wind-driven generator comprises: Workbench (10), including upper panel (11); The mounting base (30) is rotatably mounted on the upper panel (11); a retractable device installed between the workbench (10) and the installation base (30), capable of rotating the installation base (30) relative to the upper panel (11), Wherein, the installation base (30) includes an installation frame (320) for fixing the wind power generator (2). 2. The stand-up frock for wind power generators as claimed in claim 1, characterized in that, the telescopic device comprises a pair of telescopic arms (9), and the telescopic arms (9) can be Telescopic, the upper end and the lower end of the telescopic arm (9) are respectively rotatably connected to the installation base (30) and the workbench (10), and the telescopic arm (9) can make the The installation base (30) rotates relative to the upper panel (11). 3. The turnover tool for wind power generators according to claim 2, characterized in that, the installation base (30) further comprises a support frame (310), and the installation frame (320) is arranged on the support frame (310), the support frame (310) includes a pair of rotating beams (33), the first end of the rotating beam (33) is rotatably connected to the workbench (10), and the rotating beam ( 33) is rotatably connected to the upper end of said telescopic arm (9). 4. The turnover tool for wind power generators according to claim 3, characterized in that, the workbench (10) further comprises a plurality of support legs (12) for supporting the upper panel (11) and a reinforcing beam (13) connected between said plurality of support legs (12), the lower end of said telescopic arm (9) being rotatably connected to said support of one of said plurality of support legs (12) legs (12) or the reinforcing beam (13). 5. The turnover tool for wind power generators according to claim 3, characterized in that, the surface of the rotating beam (33) on which the telescopic arm (9) is installed is opposite to the upper panel (11) At a predetermined angle, the predetermined angle is in the range of 30° to 60°. 6. The turnover tool for wind power generators according to claim 3, characterized in that, the support frame (310) further includes a bending extending from the second end of the rotating beam (33) to the The first end of the rotating beam (33) is located at a pair of curved beams (35) on the same horizontal plane, and is formed between the pair of rotating beams (33) and between the pair of curved beams (35) and respectively A connecting beam (32) connecting the pair of rotating beams (33) and the pair of bending beams (35). 7. The turnover tool for wind power generators according to claim 6, characterized in that, the rotating beams (33) are respectively formed on both sides of the support frame (310), and the mounting frame (320) Separated from said rotating beam (33) by a predetermined distance. 8. The turnover tool for wind power generators according to claim 7, characterized in that, the installation frame (320) comprises a combination plate (325) and a plurality of reinforcement members (322), and the combination plate (325 ) is formed into a ring shape or a discontinuous ring shape to correspond to the shape of the stator or rotor of the wind power generator (2), and the plurality of reinforcing members (322) are formed on the joint plate (325 ), so that the combination plate (325) is separated from the support frame (310) by a predetermined distance. 9. The turnover tool for a wind power generator according to claim 8, characterized in that, the mounting frame (320) further comprises an auxiliary mounting plate (323) formed under the plurality of reinforcing members (322) . 10. The turnover tool for a wind power generator according to claim 8, characterized in that at least one circle of connecting holes (321) is provided on the connecting plate (325). 11. The turning tool for wind power generators according to any one of claims 1-10, characterized in that an angle indicator is provided at the connection point between the installation base (30) and the workbench (10) indicator to indicate the rotation angle of the mounting base (30).