Horizontal assembly tool for large wind driven generator

Abstract

The utility model discloses a horizontal assembly tool for a large wind driven generator, which relates to the technical field of component assembly, and comprises a gear box side tool, a generator side tool, a gear box side tool, a gear box side tool, a gear box side tool, a gear box side tool, a gear box side tool, a gear box side tool, a gear box side tool and a gear box side tool, and the gear box side tool is of a plate-shaped structure and is used for fixing a stator and rotor set; the gearbox side tool is of a plate-shaped structure, a positioning piece is installed on the generator side tool and used for fixing a rotor, the generator side tool is fixed to a stator through a bolt, the two tools are matched with each other, compared with a traditional vertical assembling scheme, the two overturning procedures are omitted, the generator assembling time is greatly saved, and the assembling efficiency is improved. And meanwhile, the operation height of an operator during assembly operation is reduced, high-place operation is avoided, the safety and convenience of operation are remarkably improved, a torque arm tool does not need to be used, and the assembly cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of component assembly, and more specifically, to a horizontal assembly tool for a large-scale wind turbine. Background Art

[0002] In recent years, wind turbines have increasingly evolved towards higher power and larger sizes, with semi-direct-drive wind turbines becoming a key focus of industry development. These generators consist of a generator, gearbox, and main shaft. Wind power drives the impeller, which in turn drives the main shaft. Typically, the impeller's speed is relatively low, so increasing the generator's power generation requires increasing the impeller's speed through a speed-increasing gearbox. As generators grow larger, their assembly becomes increasingly difficult.

[0003] The existing assembly method is a vertical assembly method. The incoming gearbox is in a horizontal state. When assembling the generator and gearbox, torque arm fixtures must be installed on both sides of the gearbox. Then, a turning operation is performed to turn the gearbox from a horizontal state to a vertical state, and the generator and gearbox are assembled. After assembly is completed, a second turning operation is performed to flip the generator and gearbox combination to a horizontal state, and finally, the torque arm fixtures installed on both sides of the gearbox are removed. Because the gearbox in the vertical assembly method of the generator and gearbox has to turn over twice (horizontally-vertically-horizontally), the assembly time is increased. This is especially true for large semi-direct-drive wind turbines. Turning is difficult and the turning speed cannot be accelerated, resulting in a longer assembly time. In addition, multiple turning operations also increase the safety risks of operators.

[0004] In summary, how to provide a tool suitable for horizontal assembly of wind turbines is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a horizontal assembly tool for a large wind turbine generator, which can achieve the purpose of horizontal assembly of the generator by adding corresponding tooling, thereby improving the assembly efficiency of the generator.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A horizontal assembly tool for a large wind turbine generator, comprising:

[0008] Gearbox side tooling, which is a plate-shaped structure used to fix the stator and rotor set, and is fixed to the stator by bolts;

[0009] The generator side tooling, the gearbox side tooling is a plate-shaped structure, a positioning piece is installed on the generator side tooling, the positioning piece is used to fix the rotor, and the generator side tooling is fixed to the stator by bolts.

[0010] Furthermore, the present invention has a transition flange installed on the gearbox side tooling, the transition flange includes a main body, a circular positioning plate is installed on the main body, and the transition flange is used to position the rotor.

[0011] The present invention further comprises a guide shaft, which is detachably connected to the positioning plate and is used to guide the stator during installation.

[0012] Furthermore, in the present invention, the guide shaft adopts a conical structure.

[0013] Furthermore, the gearbox side tooling and the generator side tooling are both disc-shaped, the positioning piece is a cylindrical structure arranged coaxially with the generator side tooling, and its outer diameter is the same as the inner diameter of the rotor. When the positioning piece is in use, a connecting flange is provided on the side facing the rotor.

[0014] Furthermore, the present invention provides that the positioning member is detachably mounted on the generator side tooling, and the connecting flange is detachably mounted on the positioning member.

[0015] Furthermore, the present invention provides that the transition flange is detachably connected to the gear box side tooling.

[0016] Furthermore, the present invention provides a plurality of through holes on the gearbox side tooling and the generator side tooling for fixing the stator and rotor sleeves with bolts, and the plurality of through holes gradually spread outward from the axes of the gearbox side tooling and the generator side tooling.

[0017] Furthermore, the present invention has lifting lugs installed on both the gearbox side tooling and the generator side tooling.

[0018] The horizontal assembly tooling for large wind turbines provided by the present invention, when in use, first keeps the gearbox side tooling in a horizontal position, then hoists the rotor onto it and places it on the gearbox side tooling, and fixes the rotor to the gearbox side tooling, then hoists the stator and puts it on the outside of the rotor, then places the generator side tooling on the stator and fixes it to the stator, and at the same time the positioning piece contacts and fixes the rotor, at this time the motor is assembled, and after hoisting and flipping it, it is assembled with the gearbox to complete the assembly of the entire generator set, compared with the traditional vertical assembly scheme, it saves two turning processes, greatly saves the time of generator assembly, and at the same time the working height of the operators during assembly work is reduced, avoiding high-altitude work, significantly improving the safety and convenience of the work, and does not require the use of a torque arm tooling, reducing the cost of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the shaft side when the tooling provided by the utility model is in use;

[0021] Figure 2 This is a schematic diagram of the structure of the generator box side tooling shaft side provided by the utility model;

[0022] Figure 3 This is a schematic structural diagram of the side surface of the generator side tooling provided by the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the gearbox side tooling shaft side provided by the utility model;

[0024] Figure 5 This is a structural diagram of the back side of the gear box side tooling provided by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the transition flange shaft side provided by the utility model;

[0026] Figure 7 This is a structural schematic diagram of the shaft side of the rotor installation process provided by the utility model;

[0027] Figure 8 This is a structural schematic diagram of the side of the rotor installation process provided by the utility model;

[0028] Figure 9This is a schematic structural diagram of the side surface of the tooling provided by the utility model when in use.

[0029] Figures 1-9 , the reference numerals include:

[0030] 1. Gearbox side tooling; 2. Generator side tooling; 201. Positioning piece; 202. Connecting flange; 3. Rotor; 4. Stator; 5. Transition flange; 501. Positioning plate; 502. Main body; 6. Through hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] The core of the utility model is to provide a horizontal assembly tool for a large wind turbine generator, which can achieve the purpose of horizontal assembly of the generator by adding corresponding tooling, thereby improving the assembly efficiency of the generator.

[0033] Please refer to Figures 1-9 A horizontal assembly tool for a large wind turbine includes a gearbox side tool 1 and a generator side tool 2. The gearbox side tool 1 is a plate-shaped structure used to fix the stator and rotor set. The gearbox side tool 1 is fixed to the stator 4 by bolts. The gearbox side tool 1 is a plate-shaped structure. A positioning piece 201 is installed on the generator side tool 2. The positioning piece 201 is used to fix the rotor 3. The generator side tool 2 is fixed to the stator 4 by bolts.

[0034] It should be noted that the embodiments of the present invention do not limit the specific shapes of the gearbox side tooling 1 and the generator side tooling 2. In some embodiments, they can adopt any shape, such as circular, square, polygonal, triangular, etc., as long as they can fit and fix the stator and rotor.

[0035] In addition, the embodiment of the present invention does not limit the specific shape of the positioning member 201. In some embodiments, it can be cylindrical and match the inner ring of the rotor 3, that is, the rotor 3 can be fixed by inserting it into the inner ring of the rotor 3.

[0036] In other embodiments, multiple long bolts can be used to fix it on the generator side tooling 2 and distributed in an array along the circumference of the inner ring of the rotor 3. The rotor 3 can be fixed by inserting multiple long bolts into the inner ring of the rotor 3.

[0037] When the above technical solution is adopted, the distance between multiple long bolts and the axis of the inner ring of the rotor 3 can be adjusted by setting an adjustment structure. The adjustment structure is a plurality of slide grooves corresponding to the long bolts set on the generator side tooling 2. The slide grooves are set along the radial direction of the inner ring of the rotor 3. A screw is provided inside the slide groove. The long bolts and the screw are threaded together. By driving multiple screws to rotate at the same time, the positions of multiple long bolts can be adjusted at the same time, so that they can be suitable for rotors 3 of different sizes, and the adjustment method is simple and accurate.

[0038] In addition, the embodiment of the present invention does not limit the manner in which the positioning member 201 is mounted on the generator side tooling 2. In some embodiments, it can be fixedly mounted, such as by welding or riveting, and in other embodiments, it can be detachably mounted, such as by bolting or threading.

[0039] During use, first keep the gearbox side tooling 1 horizontal, then lift the rotor 3 onto it and place it on the gearbox side tooling 1, and fix the rotor 3 to the gearbox side tooling 1, then lift the stator 4 and put it on the outside of the rotor 3, then place the generator side tooling 2 on the stator 4 and fix it to the stator 4, and at the same time the positioning piece 201 contacts and fixes the rotor 3, at this time the motor is assembled, and it is assembled with the gearbox after being lifted and flipped, completing the assembly of the entire generator set. Compared with the traditional vertical assembly scheme, it saves two turning processes, greatly saving the time of generator assembly, and at the same time the working height of the operators during assembly work is reduced, avoiding high-altitude work, significantly improving the safety and convenience of the operation, and no torque arm tooling is required, reducing the cost of assembly.

[0040] Please refer to Figures 1-9 In order to further improve the accuracy of the rotor 3 when it is installed on the gearbox side tooling 1, in some embodiments, a transition flange 5 is installed on the gearbox side tooling 1. The transition flange 5 includes a main body 502, and a circular positioning plate 501 is installed on the main body 502. The transition flange 5 is used to position the rotor 3. That is, the installation position of the rotor 3 is limited by the transition flange 5 to avoid a large position deviation, thereby avoiding the contact between the positioning plate 501 and the inner ring of the rotor 3 to achieve precise positioning of the installation position of the rotor 3.

[0041] It should be noted that the connection between the main body 502 and the positioning plate 501 in the embodiment of the present invention can be fixed or detachable. When a fixed method is adopted, it can be fixed by welding, integral molding, etc. When a detachable method is adopted, it can be fixed by bolt connection, plug-in, etc. By adopting a detachable method, it is beneficial for the positioning plate 501 to be selected according to the inner ring size of the rotor 3 in the actual assembly process, thereby improving its versatility.

[0042] Please refer to Figures 1-9 In order to further improve the coaxiality of the stator 4 during the assembly process with the rotor 3 and avoid collision, in some embodiments, a guide shaft is further included. The guide shaft is detachably connected to the positioning plate 501. The guide shaft is used to guide the stator 4 during installation. That is, before assembling the stator and rotor 3, the guide shaft is first installed on the positioning plate 501. Under the action of the guide shaft, the stator 4 and the rotor 3 are coaxially limited to avoid collision during the assembly process.

[0043] It should be noted that the guide shaft in the embodiment of the present invention adopts a conical device, and its conical structure can better guide it.

[0044] Please refer to Figures 1-9 In some embodiments, the gearbox side tooling 1 and the generator side tooling 2 are both disc-shaped, the positioning piece 201 is a cylindrical structure coaxially arranged with the generator side tooling 2, and its outer diameter is the same as the inner diameter of the rotor 3. When in use, the positioning piece 201 is provided with a connecting flange 202 on the side facing the rotor 3. That is to say, the gearbox side tooling 1 and the generator side tooling 2 are both disc-shaped structures, which can reduce their production difficulty and material usage, and are also suitable for the assembly of generators. When in use, the positioning piece 201 is provided with a connecting flange 202 on the side facing the rotor 3. The connecting flange 202 can facilitate the fixation of the rotor 3 and the stator 4 during assembly, further improving its stability during assembly.

[0045] In some embodiments, the positioning member 201 is detachably mounted on the generator side tooling 2, and the connecting flange 202 is detachably mounted on the positioning member 201. Since both the positioning member 201 and the connecting flange 202 are detachable, different sizes can be selected during assembly, which is suitable for the assembly and use of more models of motors.

[0046] It should be noted that the disassembly method in the embodiment of the present invention can be a disassembly method through bolted connection, that is, the positioning members 201 and the connecting flanges 202 of different sizes have the same inner diameter but different outer diameters.

[0047] In some embodiments, the transition flange 5 is detachably connected to the gearbox side tooling 1. Setting it to be detachably installed allows for convenient flipping of the stator and rotor 3 to a vertical position after assembly. The gearbox side tooling 1 can be removed first, and then the transition flange 5 can be removed, thereby reducing the overall weight of the tooling during the disassembly process and reducing the difficulty of disassembly of the tooling.

[0048] In some embodiments, the gearbox side tooling 1 and the generator side tooling 2 are provided with a plurality of through holes 6 for fixing to the stator and rotor sets by bolts, and the plurality of through holes 6 gradually spread outward from the axis of the gearbox side tooling 1 and the generator side tooling 2. That is, the through holes 6 facilitate the fixation between the gearbox side tooling 1 and the generator side tooling 2 and the stator 4, and there are multiple groups of through holes 6, each group is distributed in a circular array around the axis of the gearbox side tooling 1 and the generator side tooling 2, and a certain gap is left between each group. The diameter of each group gradually expands from the axis of the gearbox side tooling 1 and the generator side tooling 2 outward, which is conducive to the assembly and use of generators of different sizes.

[0049] Please refer to Figures 1-9 In order to facilitate the movement and transportation of the gearbox side tooling 1 and the generator side tooling 2, in some embodiments, the gearbox side tooling 1 and the generator side tooling 2 are both installed with lifting lugs 7. That is, the gearbox side tooling 1 and the generator side tooling 2 can be lifted and their positions adjusted by the lifting lugs 7 during operation.

[0050] It should be noted that, in the embodiment of the present invention, the number of lifting lugs 7 can be selected according to different needs. When multiple numbers of lifting lugs 7 are selected, the multiple lifting lugs 7 are distributed in a circular array along the axial direction of the gearbox side tooling 1 and the generator side tooling 2.

[0051] In addition, the lifting lugs 7 of the embodiment of the present invention can be installed on the gearbox side tooling 1 and the generator side tooling 2 in a fixed manner, such as welding, integral molding, etc.

[0052] Alternatively, it can be installed in a movable manner on the gearbox side tooling 1 and the generator side tooling 2. For example, a circular groove is opened on the unused side of the gearbox side tooling 1 and the generator side tooling 2, and the lifting ear 7 is slidably installed inside the groove. The position of the lifting ear 7 can be adjusted by sliding it inside the groove, and different lifting positions can be selected according to the work requirements.

[0053] That is to say, the focus of the embodiment of the present invention is: keeping the gearbox side tooling 1 horizontal, then lifting the rotor 3 onto it and placing it on the gearbox side tooling 1, and fixing the rotor 3 to the gearbox side tooling 1, then lifting the stator 4 and putting it on the outside of the rotor 3, then placing the generator side tooling 2 on the stator 4, and fixing it to the stator 4, while the positioning piece 201 contacts and fixes the rotor 3, at the same time the motor is assembled, and after being hoisted and flipped over, it is assembled with the gearbox to complete the assembly of the entire generator set. Compared with the traditional vertical assembly scheme, it saves two turning processes, greatly saves the time of generator assembly, and at the same time the working height of the operators during assembly work is reduced, avoiding high-altitude work, significantly improving the safety and convenience of the work, and does not require the use of torque arm tooling, reducing the cost of assembly.

[0054] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0055] The above is a detailed introduction to the horizontal assembly tooling for large wind turbines provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A horizontal assembly tool for large wind turbines, characterized in that: include: A gearbox side tooling (1), the gearbox side tooling (1) is a plate-shaped structure used to fix the stator and rotor set, and the gearbox side tooling (1) is fixed to the stator (4) by bolts; The generator side tooling (2) is a plate-shaped structure, the gearbox side tooling (1) is provided with a positioning piece (201) installed on the generator side tooling (2), the positioning piece (201) is used to fix the rotor (3), and the generator side tooling (2) is fixed to the stator (4) by bolts.

2. A large-scale wind turbine horizontal assembly tool according to claim 1, characterized in that: A transition flange (5) is installed on the gearbox side tooling (1), and the transition flange (5) includes a main body (502). A circular positioning disk (501) is installed on the main body (502). The transition flange (5) is used to position the rotor (3).

3. A large-scale wind turbine horizontal assembly tool according to claim 2, characterized in that: It also includes a guide shaft, which is detachably connected to the positioning plate (501), and is used to guide the stator (4) during installation.

4. A large-scale wind turbine horizontal assembly tool according to claim 3, characterized in that: The guide shaft adopts a conical structure.

5. The large-scale wind turbine horizontal assembly tool according to claim 1, characterized in that: The gearbox side tooling (1) and the generator side tooling (2) are both disc-shaped, the positioning member (201) is a cylindrical structure arranged coaxially with the generator side tooling (2), and its outer diameter is the same as the inner diameter of the rotor (3), and the positioning member (201) is provided with a connecting flange (202) on the side facing the rotor (3) when in use.

6. The large-scale wind turbine horizontal assembly tool according to claim 5, characterized in that: The positioning member (201) is detachably mounted on the generator side tooling (2), and the connecting flange (202) is detachably mounted on the positioning member (201).

7. The large-scale wind turbine horizontal assembly tool according to claim 2, characterized in that: The transition flange (5) is detachably connected to the gear box side tooling (1).

8. A large-scale wind turbine horizontal assembly tool according to any one of claims 1 to 7, characterized in that: The gearbox side tooling (1) and the generator side tooling (2) are both provided with a plurality of through holes (6) for fixing the stator and rotor sleeves by bolts, and the plurality of through holes (6) gradually spread outward from the axes of the gearbox side tooling (1) and the generator side tooling (2).

9. The large-scale wind turbine horizontal assembly tool according to claim 8, characterized in that: Lifting lugs (7) are installed on both the gearbox side tooling (1) and the generator side tooling (2).

Images