Hanging support in hub of wind generating set

Abstract

The invention discloses a hoisting support in a hub of a wind generating set, which relates to the technical field of wind power generation and comprises a cross-shaped beam body, a cross-shaped beam body, a cross-shaped beam body and a cross-shaped beam body, the limiting adjusting mechanisms are arranged at the lower end of the cross-shaped beam body; the limiting and adjusting mechanisms are arranged on the cross-shaped beam body, the lifting appliance mechanisms are movably arranged on the cross-shaped beam body, and the lifting appliance mechanisms are driven by the corresponding limiting and adjusting mechanisms to move and be limited. Four hooks are symmetrically hooked with mounting holes in the front end and the rear end of each variable-pitch bearing flange respectively, so that the variable-pitch bearing flanges on the two sides are symmetrical in hooking mode, then the lifting device is started to lift the hub, the forward and reverse rotation motors are adjusted to be started and stopped, the slings are made to be in the vertical state, and then the hub is lifted; a multi-point supporting structure is formed by the design of the four-point hooks, it is guaranteed that the hubs are kept stable in the hoisting process, and swing and deviation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and specifically to a hoisting bracket inside the hub of a wind turbine generator set. Background Technique

[0002] As an important part of renewable energy, wind turbine generator sets are widely used in wind farms around the world. With the continuous development of wind power generation technology, the single-unit capacity of wind turbine generator sets has been increasing continuously, which puts forward higher requirements for the installation and maintenance technology of wind turbine generator sets. The hub, as a key component of the wind turbine generator set, connects the blades and the main shaft and plays a crucial role in the operation of the entire unit. During the installation, maintenance, and replacement of related components of the hub, the hoisting bracket is an indispensable device, and its performance directly affects the efficiency, quality, and safety of the operation.

[0003] However, the existing hoisting brackets usually only have a single-side hanging bracket, and wind turbine generator sets are usually installed in outdoor open areas and are in a complex and changeable wind environment for a long time. Under the action of strong winds, the hoisted objects supported by the single-side hanging bracket are prone to swing, and the stability is poor. The installation personnel not only have to deal with the shaking of the hoisted object but also need to complete high-precision installation operations in this unstable state, which greatly increases the installation risk and difficulty.

[0004] In addition, when the hub is fixed to the main shaft in the nacelle, due to the support method of the single-side hanging bracket, it is difficult to control the center of gravity of the hub, and the phenomenon of tipping is very likely to occur. This not only increases the difficulty of aligning and installing the hub with the main shaft, prolongs the installation time, but also reduces the installation accuracy and affects the overall performance of the wind turbine generator set.

[0005] Therefore, it is necessary to provide a hoisting bracket inside the hub of a wind turbine generator set to solve the technical problems proposed in the above background technique. Summary of the Invention

[0006] In view of the above problems, the present invention provides a hoisting bracket inside the hub of a wind turbine generator set. First, place one of the pitch bearing flanges of the hub on the ground, then use two hooks to respectively hook the installation holes at the front and rear ends inside one side of the pitch bearing flange, and use another two hooks to respectively hook the corresponding installation holes at the front and rear ends inside the other side of the pitch bearing flange, so that the hooking methods of the two sides of the pitch bearing flanges are symmetrical. After starting the lifting device to lift the hub, adjust the start and stop of each forward and reverse motor so that each lifting cable is in a vertical state, and then lift the hub. The four-point hook design forms a multi-point support structure to ensure the stability of the hub during hoisting, reduce swing and offset.

[0007] To achieve the above object, the present invention provides the following technical solution: A hoisting bracket inside the hub of a wind turbine generator set, which includes:

[0008] Cross beam body, the beam bodies of which are all arranged in the shape of a capital "I". At the upper ends of the beam bodies away from the central position of the cross beam body, ear seats are fixedly arranged, and buckles are arranged on the ear seats.

[0009] Limit adjustment mechanisms, configured to be four in number, and are all installed at the lower ends of the beam bodies of the cross beam body; and

[0010] Lifting mechanism, corresponding to the limit adjustment mechanisms. The lifting mechanisms are all movably arranged on the cross beam body, and the lifting mechanisms are all driven to move and limited by the corresponding limit adjustment mechanisms.

[0011] In a possible implementation manner, the buckles can all be connected to the lower ends of the lifting rings, and the upper ends of the lifting rings are all connected to the lifting device.

[0012] In a possible implementation manner, the limit adjustment mechanism includes:

[0013] Load seats, which are all fixedly arranged at the lower ends of the beam bodies of the cross beam body away from the central position;

[0014] Mounting seats, which are all fixedly arranged at the lower ends of the beam bodies of the cross beam body close to the central position;

[0015] Central screw, rotatably arranged between the load seat and the mounting seat, and a first side screw and a second side screw are respectively rotatably arranged between the load seat and the mounting seat on both sides of the central screw; and

[0016] Power assembly, arranged on the load seat and the lower ends of the beam bodies of the cross beam body, and the output ends of the power assembly are respectively connected to the central screw, the first side screw and the second side screw.

[0017] In a possible implementation manner, the power assembly includes:

[0018] Forward and reverse motors, the upper ends of which are all fixedly arranged at the lower ends of the beam bodies of the cross beam body away from the central position, and one side of the forward and reverse motors close to the mounting seat is all fixedly arranged with the load seat; and

[0019] Driving gears, rotatably arranged at the central position inside the load seat, and a first driven gear and a second driven gear are sequentially rotatably arranged inside the load seat on both sides of the driving gear. The first driven gears are all meshed with the driving gear, and the second driven gears are all meshed with the first driven gears.

[0020] In a possible implementation, one end of the driving gear away from the forward and reverse motor is fixedly arranged with the central screw rod, one end of the driven gear two on one side away from the forward and reverse motor is fixedly arranged with the side screw rod one, and one end of the driven gear two on the other side away from the forward and reverse motor is fixedly arranged with the side screw rod two.

[0021] In a possible implementation, the lifting mechanism includes:

[0022] A base, the upper end of which is provided with a U-shaped groove, and three threaded holes are penetrated through the base at the lower end of the U-shaped groove;

[0023] Guide wheels, symmetrically and rotatably arranged on the base on both sides of the U-shaped groove;

[0024] A winding unit, fixedly arranged at the lower end of the base, a lifting cable is wound inside the winding unit, and a hook is fixedly arranged at the tail end of the lifting cable outside the base; and

[0025] A driving motor, fixedly arranged on the winding unit, and the driving motor is used to drive the lifting and retracting of the lifting cable in the winding unit.

[0026] In a possible implementation, the three threaded holes are respectively arranged corresponding to the side screw rod one, the central screw rod and the side screw rod two.

[0027] In a possible implementation, the guide wheels are movably arranged on the lower beam of the cross beam body, and the lower end of the U-shaped groove is located at the lower end of the beam of the cross beam body.

[0028] Compared with the prior art, the present invention provides a lifting bracket inside the hub of a wind turbine generator, which has the following beneficial effects:

[0029] 1. In the present invention, first place one of the pitch bearing flanges of the hub on the ground, then use two hooks to respectively hook the installation holes at the front and rear ends inside one side of the pitch bearing flange, and use another two hooks to respectively hook the corresponding installation holes at the front and rear ends inside the other side of the pitch bearing flange, so that the hooking methods of the two sides of the pitch bearing flange are symmetrical. After starting the lifting device to lift the hub, adjust the start and stop of each forward and reverse motor so that each lifting cable is in a vertical state, and then lift the hub. The four-point hook design forms a multi-point support structure to ensure the stability of the hub during the hoisting process, reduce swing and deviation. At the same time, the central screw rod, the side screw rod one and the side screw rod two can ensure that the hub swings synchronously with the cross beam body during the lifting process, avoiding the problem of the hub running off on the cross beam body during the lifting process, which is beneficial to the subsequent alignment and adjustment work between the hub and the main shaft.

[0030] 2. In the present invention, the sling can be adjusted to be in a vertical state by the forward and reverse motor, and the docking side of the hub can be adjusted to be lifted by the driving motor, so that the connecting main shaft flange can also be in a vertical state during docking, avoiding the warping phenomenon that is likely to occur during single-sided hoisting, ensuring the precise alignment between the connecting main shaft flange and the main shaft, helping to reduce the installation error and improve the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0032] Figure 1 It is a schematic diagram of the overall structure of the hoisting bracket inside the hub of a wind turbine generator.

[0033] Figure 2 It is a schematic diagram of the structure of the limit adjustment mechanism in the hoisting bracket inside the hub of a wind turbine generator.

[0034] Figure 3 It is a schematic diagram of the structure of the power assembly in the hoisting bracket inside the hub of a wind turbine generator.

[0035] Figure 4 It is a schematic diagram of the structure of the lifting appliance mechanism in the hoisting bracket inside the hub of a wind turbine generator.

[0036] Figure 5 It is a schematic diagram of the numbering position of the lifting appliance mechanism in the hoisting bracket inside the hub of a wind turbine generator.

[0037] Figure 6 It is a schematic diagram of the structure of the hub in the hoisting bracket inside the hub of a wind turbine generator.

[0038] Reference numerals: 1, cross beam body; 2, ear seat; 3, buckle; 4, limit adjustment mechanism; 5, lifting appliance mechanism; 6, lifting ring; 41, load-carrying seat; 42, mounting seat; 43, central screw; 44, lateral screw one; 45, lateral screw two; 46, power assembly; 51, base; 52, U-shaped groove; 53, guide wheel; 54, threaded hole; 55, winding unit; 56, sling; 57, hook; 58, driving motor; 461, forward and reverse motor; 462, driving gear; 463, driven gear one; 464, driven gear two. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0041] Please refer to Figures 1-6 , an object suspension bracket inside the hub of a wind turbine generator set provided by an embodiment of the present invention includes:

[0042] A cross beam body 1, the beam bodies of which are all arranged in an I-shaped manner. At the upper ends of the beam bodies of the cross beam body 1 away from the central position, ear seats 2 are fixedly arranged, and buckles 3 are arranged on the ear seats 2;

[0043] A limit adjusting mechanism 4, configured to be four, and all are installed at the lower ends of the beam bodies of the cross beam body 1; and

[0044] A lifting tool mechanism 5, which is arranged corresponding to the limit adjusting mechanism 4. The lifting tool mechanism 5 is movably arranged on the cross beam body 1, and the lifting tool mechanism 5 is driven to move and limited by the corresponding limit adjusting mechanism 4.

[0045] Through the above technical solution, first place one of the pitch bearing flanges of the hub on the ground, connect each lifting ring 6 with the buckle 3, control the hub to be initially lifted and positioned, and label the lifting tool mechanisms 5 as I, II, III, and IV respectively. As Figure 5 and Figure 6 shown, there are two corresponding solutions: a. Adjust the lifting tool mechanisms I and II to hook with the installation holes at the front and rear ends inside one side pitch bearing flange, and then adjust the lifting tool mechanisms III and IV to hook with the installation holes at the corresponding front and rear ends inside the other side pitch bearing flange; b. Adjust the lifting tool mechanisms I and IV to hook with the installation holes at the front and rear ends inside one side pitch bearing flange, and then adjust the lifting tool mechanisms II and III to hook with the installation holes at the corresponding front and rear ends inside the other side pitch bearing flange;

[0046] Then, control the secondary lifting and positioning of the hub. Adjust the positions of each lifting mechanism 5 on the cross beam body 1 by adjusting the limit adjusting mechanism 4, then fully lift the hub, control the lifting mechanism 5 to make the connecting spindle flange in a vertical state, and finally adjust the connection between the connecting spindle flange of the hub and the spindle for docking.

[0047] On the basis of the above technical solution, the four lifting mechanisms 5 are connected to the hub, so that the lifting bracket can hook the hub at four points, and the hooking methods of the pitch bearing flanges on both sides are symmetrical, thus forming a multi-point support structure for the hub to ensure the stability of the hub during hoisting and reduce swing and offset.

[0048] In a possible implementation manner, each buckle 3 can be connected to the lower end of the lifting ring 6, and the upper ends of the lifting rings 6 are connected to the lifting device. During the preliminary preparation of lifting the hub, first connect the lifting rings 6 to the lifting device, then connect each lifting ring 6 to the buckle 3, and then connect each lifting mechanism 5 to the mounting holes of the hub respectively, so that the lifting device can control the vertical lifting and horizontal movement of the hub, such as: by means of a crane, tower crane, etc.

[0049] In a possible implementation manner, the limit adjusting mechanism 4 includes:

[0050] The load-carrying seat 41 is fixedly arranged at the lower end of the beam body of the cross beam body 1 far from the center position;

[0051] The mounting seat 42 is fixedly arranged at the lower end of the beam body of the cross beam body 1 close to the center position;

[0052] The central screw 43 is rotatably arranged between the load-carrying seat 41 and the mounting seat 42, and a first side screw 44 and a second side screw 45 are respectively rotatably arranged between the load-carrying seat 41 and the mounting seat 42 on both sides of the central screw 43; and

[0053] The power assembly 46 is arranged on the load-carrying seat 41 and the lower end of the beam body of the cross beam body 1, and the output ends of the power assembly 46 are respectively connected to the central screw 43, the first side screw 44 and the second side screw 45, that is, after the power assembly 46 is started, it can control the synchronous rotation of the central screw 43, the first side screw 44 and the second side screw 45.

[0054] In a possible implementation manner, the power assembly 46 includes:

[0055] The forward and reverse motor 461 has its upper end fixedly arranged at the lower end of the beam body of the cross beam body 1 far from the center position, and one side of the forward and reverse motor 461 close to the mounting seat 42 is fixedly arranged with the load-carrying seat 41; and

[0056] The driving gear 462 is rotatably arranged at the central position within the load carrier 41, and within the load carrier 41 on both sides of the driving gear 462, a first driven gear 463 and a second driven gear 464 are sequentially and rotatably arranged. The first driven gears 463 are all meshed with the driving gear 462, and the second driven gears 464 are all meshed with the first driven gears 463.

[0057] Based on the above technical solution, when the forward and reverse motor 461 is started, the forward and reverse motor 461 drives the driving gear 462 to rotate within the load carrier 41, and the driving gear 462 sequentially drives the first driven gear 463 and the second driven gear 464 to rotate within the load carrier 41.

[0058] In a possible implementation manner, one end of the driving gear 462 away from the forward and reverse motor 461 is fixedly arranged with the central screw 43, one end of the second driven gear 464 on one side away from the forward and reverse motor 461 is fixedly arranged with the side screw 44, and one end of the second driven gear 464 on the other side away from the forward and reverse motor 461 is fixedly arranged with the side screw 45.

[0059] It should be added that when the driving gear 462 rotates within the load carrier 41, the central screw 43 rotates synchronously between the load carrier 41 and the mounting seat 42. At the same time, the driving gear 462 drives the first driven gear 463 and the second driven gear 464 to rotate within the load carrier 41. At this time, the second driven gear 464 on one side rotates synchronously with the side screw 44, and the second driven gear 464 on the other side rotates synchronously with the side screw 45.

[0060] Based on the above technical solution, first place one of the pitch bearing flanges of the hub on the ground, then use each lifting mechanism 5 to hook with the mounting holes at the front and rear ends within the pitch bearing flanges on both sides respectively, then start the lifting device to lift the hub, and then adjust the start and stop of each forward and reverse motor 461, so as to adjust the position of the hub at the lower end of the cross beam 1 and perform positioning. At this time, under the thread limiting action of the central screw 43, the side screw 44, and the side screw 45, each lifting mechanism 5 can ensure that the hub swings synchronously with the cross beam 1 during the lifting process, avoiding the problem of the hub running off on the cross beam 1 during the lifting process, which is beneficial to the subsequent alignment and adjustment work between the hub and the main shaft.

[0061] In a possible implementation manner, the lifting mechanism 5 includes:

[0062] A base 51, on the upper end of which a U-shaped groove 52 is opened, and three threaded holes 54 are penetrated through the base 51 at the lower end of the U-shaped groove 52;

[0063] The guide wheel 53 is symmetrically and rotatably arranged on the base 51 located on both sides of the U-shaped groove 52;

[0064] The winding unit 55 is fixedly arranged at the lower end of the base 51. A sling 56 is wound inside the winding unit 55, and a hook 57 is fixedly arranged at the end of the sling 56 outside the base 51; and

[0065] The driving motor 58 is fixedly arranged on the winding unit 55, and the driving motor 58 is used to drive the sling 56 to be wound and locked inside the winding unit 55.

[0066] In a possible implementation manner, the three threaded holes 54 are respectively arranged corresponding to the side screw rod one 44, the central screw rod 43, and the side screw rod two 45. That is, after the side screw rod one 44, the central screw rod 43, and the side screw rod two 45 rotate synchronously, the relative position of the base 51 on the side screw rod one 44, the central screw rod 43, and the side screw rod two 45 can be adjusted and positioned.

[0067] In a possible implementation manner, the guide wheel 53 is movably arranged on the lower beam of the cross beam body 1, and the lower end of the U-shaped groove 52 is located at the lower end of the beam of the cross beam body 1.

[0068] Adopting the above technical solution, taking the a solution as an example, the hooks 57 of the No. I and No. II lifting tool mechanisms 5 are respectively hooked with the mounting holes at the front and rear ends inside the pitch bearing flange on one side, and the hooks 57 of the No. III and No. IV lifting tool mechanisms 5 are respectively hooked with the corresponding mounting holes at the front and rear ends inside the pitch bearing flange on the other side. Then, the sling 56 is adjusted by the forward and reverse motor 461 to make it in a vertical state. Then, the driving motor 58 is used to adjust the winding and locking of the sling 56, so that the docking side of the hub is lifted and lowered, and the connecting main shaft flange can also be in a vertical state during docking, avoiding the warping phenomenon that is likely to occur during single-side hoisting of the hub, ensuring the precise alignment between the connecting main shaft flange and the main shaft, helping to reduce the installation error, and improving the assembly quality.

[0069] During specific implementation, first place one of the pitch bearing flanges of the hub on the ground, then connect the lifting rings 6 to the lifting device and connect each lifting ring 6 to the buckle 3. Stop after initially raising the lifting device. Hook the two hooks 57 respectively to the installation holes at the front and rear ends inside one side of the pitch bearing flange, and use the other two hooks 57 to hook the corresponding installation holes at the front and rear ends inside the other side of the pitch bearing flange. Then start the lifting device to lift the hub a second time and stop. Adjust the start and stop of each forward and reverse motor 461. The base 51 moves along the central screw 43, the first side screw 44, and the second side screw 45, and the guide wheel 53 moves along the cross beam body 1. Adjust each sling 56 to be in a vertical state. Then start the lifting device to completely lift the hub. Start the drive motor 58, and the drive motor 58 adjusts the lifting of the docking side of the hub so that the connecting spindle flange is also in a vertical state. Finally, adjust the lifting device to dock the connecting spindle flange of the hub with the spindle.

[0070] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wind turbine hub internal hanging bracket, characterized in that: include: A cross beam body (1), wherein the beam body is arranged in an I-shape, and an ear seat (2) is fixedly arranged at the upper end of the cross beam body (1) away from the center position, and a buckle (3) is installed on the ear seat (2); The limit adjustment mechanisms (4) are configured in four pieces and are all installed at the lower end of the cross beam (1); and The sling mechanism (5) is arranged corresponding to the limit adjustment mechanism (4); the sling mechanism (5) can be movably arranged on the cross beam body (1), and the sling mechanism (5) is driven to move and limit by the corresponding limit adjustment mechanism (4).

2. The wind turbine hub internal hanging bracket according to claim 1, characterized in that: The buckles (3) can be connected to the lower ends of the lifting rings (6), and the upper ends of the lifting rings (6) are connected to the lifting device.

3. The wind turbine hub internal hanging bracket according to claim 1, characterized in that: The limit adjustment mechanism (4) comprises: An object carrier (41) is fixedly arranged at the lower end of the cross beam (1) away from the center position; A mounting seat (42) which is fixedly arranged at the lower end of the cross beam body (1) near the center position; A central screw (43) is rotatably arranged between the object carrier (41) and the mounting seat (42), and a side screw first (44) and a side screw second (45) are rotatably arranged between the object carrier (41) and the mounting seat (42) on both sides of the central screw (43); and A power assembly (46) is arranged on the object carrier (41) and at the lower end of the cross beam (1), and an output end of the power assembly (46) is respectively connected to the central screw (43), the side screw 1 (44) and the side screw 2 (45).

4. The wind turbine generator hub internal hanging bracket according to claim 3, characterized in that: The power assembly (46) comprises: a forward and reverse motor (461), the upper end of which is fixedly arranged with the lower end of the cross beam (1) away from the center position, and the side of the forward and reverse motor (461) close to the mounting seat (42) is fixedly arranged with the object carrier (41); and A driving gear (462) is rotatably arranged at a central position in the object carrier (41), and a driven gear 1 (463) and a driven gear 2 (464) are rotatably arranged in sequence in the object carrier (41) on both sides of the driving gear (462), the driven gear 1 (463) is meshed with the driving gear (462), and the driven gear 2 (464) is meshed with the driven gear 1 (463).

5. The wind turbine generator hub internal hanging bracket according to claim 4, characterized in that: One end of the driving gear (462) away from the forward and reverse motor (461) is fixedly arranged with the central screw (43), one end of the driven gear 2 (464) away from the forward and reverse motor (461) is fixedly arranged with the side screw 1 (44), and one end of the driven gear 2 (464) away from the forward and reverse motor (461) is fixedly arranged with the side screw 2 (45).

6. The wind turbine generator set hub internal hanging bracket according to claim 3, characterized in that: The sling mechanism (5) comprises: The base (51) has a U-shaped groove (52) at its upper end, and three threaded holes (54) are formed through the base (51) at the lower end of the U-shaped groove (52); Guide wheels (53) are symmetrically and rotatably arranged on the base (51) located on both sides of the U-shaped groove (52); A winding unit (55) is fixedly arranged at the lower end of the base (51), a sling (56) is wound inside the winding unit (55), and a hook (57) is fixedly arranged at the tail end of the sling (56) located outside the base (51); and A driving motor (58) is fixedly arranged on the winding unit (55), and the driving motor (58) is used to drive the retracting and releasing lock of the sling (56) in the winding unit (55).

7. The wind turbine generator hub internal hanging bracket according to claim 6, characterized in that: The three threaded holes (54) are respectively arranged corresponding to the side screw rod 1 (44), the central screw rod (43) and the side screw rod 2 (45).

8. The wind turbine generator hub internal hanging bracket according to claim 6, characterized in that: The guide wheel (53) is movably arranged on the lower end beam body of the cross beam body (1), and the lower end of the U-shaped groove (52) is located at the lower end of the beam body of the cross beam body (1).

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