Multipurpose tool for assembling and testing semi-direct-drive permanent magnet wind driven generator

Abstract

The utility model belongs to the technical field of wind driven generators, and particularly discloses a multipurpose tool for assembling and testing a semi-direct-drive permanent magnet wind driven generator, which comprises a right-angle bearing frame, and a test end cover is mounted on a vertical section of the bearing frame. The test end cover is rotationally connected with a test rotating shaft coaxially arranged in the test end cover through different bearing assemblies, one end of the test rotating shaft penetrates out of the bearing frame, and the other end of the test rotating shaft penetrates out of the test end cover; wherein the test end cover is matched with and detachably connected with a spigot of the stator base; the limiting plate and the guide rod are used for assembling the rotor and are used for preventing magnetic poles of the rotor from adsorbing an inner hole of the stator and assembling and positioning, and the grounding carbon brush and the insulation assembly are arranged and are used for preventing the shaft voltage and the shaft current of the rotor from damaging the test bearing in the test process. According to the utility model, the purpose that a gear box is not needed in the assembling and testing process of the semi-direct-driven permanent magnet wind driven generator is completely realized, the assembling and testing cost is reduced, and the working efficiency and the economic benefit are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind turbines, and specifically relates to a multi-purpose tooling for assembling and testing a semi-direct-drive permanent magnet wind turbine, which is mainly used for general assembly and type testing of a semi-direct-drive permanent magnet synchronous power generator with an outer stator and an inner rotor. Background Art

[0002] In the current global situation of increasing shortage of "fossil energy" and people's awareness of environmental protection, the development of green energy has become a focus of universal attention in countries around the world. Among them, wind power, as a new type of renewable clean energy, has been growing rapidly in scale and quantity worldwide in recent years. Its principle is to convert wind energy into mechanical work, which drives the rotor to rotate and finally outputs AC power equipment.

[0003] Wind turbines are divided into doubly-fed, direct-drive and semi-direct-drive types according to the main transmission chain structure. Among them, semi-direct drive means that the wind blades drive the gearbox to drive the permanent magnet motor to generate electricity. It is between direct drive and doubly-fed. The speed regulation of the gearbox is not as high as that of the doubly-fed. The generator is also changed from the doubly-fed winding type to the permanent magnet synchronous type, avoiding many defects of the direct drive scheme and the high-speed gearbox drive scheme. It combines the advantages of both direct drive and doubly-fed wind turbines, has the advantages of compact structure, high power generation efficiency, small space occupation, and is suitable for large-scale wind power. Therefore, semi-direct drive permanent magnet wind turbines have gradually become mainstream in recent years.

[0004] However, due to the structural characteristics of the semi-direct-drive permanent magnet synchronous wind turbine, the generator does not have a fixed stator and rotor shaft system, so most of the generator stators and rotors need to be installed in the gearbox for assembly and testing at the factory of the whole machine manufacturer. This is extremely inconvenient for manufacturers of generator stators and generator rotors, increases production costs, and seriously restricts production efficiency; in addition, the generator rotor pole is a permanent magnet structure, which poses a great safety risk during packaging and transportation.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a multi-purpose tool for assembling and testing a semi-direct-drive permanent magnet wind turbine. The tool can not only assemble the stator, rotor and end cover of the generator, but also carry out relevant tests (such as type tests) on the assembled semi-direct-drive permanent magnet wind turbine, thereby improving the production efficiency of wind turbine manufacturers and reducing manufacturing costs.

[0007] The purpose of the utility model is to solve the problem through the following technical solutions:

[0008] The utility model provides a multi-purpose tool for assembling and testing a semi-direct-drive permanent magnet wind turbine, comprising a carrier frame with a right-angle cross section, a test end cover installed on the inner side of the vertical section of the carrier frame, the test end cover consisting of a hollow structure and a coaxial front cover plate and a rear cover plate fixedly connected by a plurality of connectors, the front cover plate is rotatably connected to a test shaft coaxially arranged therein through a driving end bearing assembly, and the rear cover plate is rotatably connected to a test shaft coaxially arranged therein through a non-driving end bearing assembly, one end of the test shaft passes through the vertical section, and the other end passes through the rear cover plate;

[0009] Wherein, the front cover plate of the test end cover is detachably connected to the stator frame of the generator stator;

[0010] It also includes a limit plate and a guide rod for assembling the generator rotor, wherein there are multiple limit plates, which are arranged in a circular shape along the outer end surface of the stator frame and are detachably connected thereto, and are used to limit the circumferential direction of the generator rotor, and there are multiple guide rods, which are arranged in a circular shape on the rear end step of the test shaft passing through the rear cover plate and are detachably connected thereto, and the other end of each guide rod passes through a preset through hole of the generator rotor, and the generator rotor is detachably connected to the test shaft via the preset through hole and fasteners.

[0011] Further, the drive end bearing assembly includes a first oil slinger, a first bearing outer cover, a first insulating bearing sleeve, a deep groove ball bearing, a first bearing inner cover, a first oil filling cup and a first temperature sensor;

[0012] The deep groove ball bearing is rotatably arranged on the circumferential surface of the test shaft, the first bearing outer cover and the first bearing inner cover are respectively located on both sides of the deep groove ball bearing, and the first bearing outer cover is arranged close to the support frame relative to the first bearing inner cover, and the first temperature sensor is installed on the first bearing outer cover, the first oil flinger is located between the first bearing outer cover and the deep groove ball bearing, the first insulating bearing sleeve is arranged on the circumferential surface of the deep groove ball bearing, and is detachably connected to the first bearing outer cover and the first bearing inner cover, and the first oil filling cup is installed on the first bearing inner cover.

[0013] Furthermore, the tooling also includes a grounding carbon brush, which is in contact with the test shaft and is detachably connected to the bearing outer cover.

[0014] Further, the non-drive end bearing assembly includes a second oil slinger, a second bearing outer cover, a second insulating bearing sleeve, a cylindrical roller bearing, a second bearing inner cover, a second oil filling cup and a second temperature sensor;

[0015] The cylindrical roller bearing is rotatably arranged on the circumferential surface of the test shaft, the second bearing outer cover and the second bearing inner cover are respectively located on both sides of the cylindrical roller bearing, and the second bearing outer cover is arranged close to the support frame relative to the second bearing inner cover, and the second temperature sensor is installed on the second bearing outer cover, the second oil slinger is located between the second bearing outer cover and the cylindrical roller bearing, the second insulating bearing sleeve is arranged on the circumferential surface of the cylindrical roller bearing, and is detachably connected to the second bearing outer cover and the second bearing inner cover, and the second oil filling cup is installed on the second bearing inner cover.

[0016] Furthermore, the driving end bearing assembly is detachably connected to the front cover plate by bolts, and the non-driving end bearing assembly is detachably connected to the rear cover plate by bolts, and insulating assemblies of the same structure are provided at the connection points.

[0017] Furthermore, the insulating assembly includes an insulating sleeve, a radial insulating pad and an axial insulating pad;

[0018] When the driving end bearing assembly is connected to the front cover plate and the non-driving end bearing assembly is connected to the rear cover plate, they are respectively matched with the corresponding front cover plate and rear cover plate through the stoppers arranged on the first insulating bearing sleeve and the second insulating bearing sleeve. The insulating sleeve is arranged on the side of the bolt close to the nut. A radial insulating pad is arranged between the nut of the bolt and the first insulating bearing sleeve or the second insulating bearing sleeve. The first insulating bearing sleeve, the second insulating bearing sleeve and the corresponding front cover plate and rear cover plate are correspondingly provided with radial insulating pads and axial insulating pads in the vertical direction and the horizontal direction.

[0019] Furthermore, the number of the limit plates and the number of the guide rods are both three, and the limit plates and the guide rods are both made of non-magnetic materials.

[0020] Furthermore, the tooling also includes a turning rack, and the height of the turning rack is greater than the distance that the test shaft extends out of the carrier frame.

[0021] Furthermore, the ends of the vertical section and the horizontal section of the support frame are both provided with lifting holes that cooperate with the lifting rings, and a reinforcing rib is provided between the vertical section and the horizontal section.

[0022] Furthermore, an inner stopper which cooperates with the test end cover is provided on the inner side of the vertical section of the support frame, and three cooling ventilation holes are evenly opened on the vertical section and located on the circumference of the test shaft for cooling air to enter during the test of the semi-direct-drive permanent magnet wind turbine.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The multi-purpose tooling provided by the utility model is mainly composed of a load frame, a test end cover, a drive end bearing assembly, a non-drive end bearing assembly, a test shaft, a limit plate, a guide rod, a grounding carbon brush, an insulating assembly, and a turning and placing frame. Among them, the test end cover is mainly used to cooperate with the installation of the stator part of the generator; the limit plate and the guide rod are mainly used for rotor assembly to prevent its magnetic poles from adsorbing the inner hole of the stator and assembly positioning; the test shaft, the drive end bearing assembly and the non-drive end bearing assembly can provide rotation support and torque for the rotor during the test, and have the function of monitoring the operating temperature of the bearing during the test; the setting of the grounding carbon brush and the insulating assembly can prevent the damage to the bearing caused by the rotor shaft voltage and shaft current during the test, and avoid interfering with the collection of the real data of the rotor shaft voltage and shaft current during the test. To sum up, the tooling provided by the utility model can not only realize the assembly of the stator, rotor and end cover of the semi-direct-drive permanent magnet wind turbine, but also can carry out relevant tests on the tooling, thereby avoiding the various inconveniences and risks in the transportation process caused by the manufacturers of the stators and rotors having to transport them to the whole machine factory for assembly and testing with the help of gearboxes, thereby reducing the assembly and testing costs and improving work efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings herein are incorporated into and constitute a part of this specification, and together with the description, are used to explain the principles of the present utility model.

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model tooling;

[0028] Figure 2 It is a left view schematic diagram of the overall structure of the tooling of the utility model;

[0029] Figure 3 yes Figure 1 The enlarged schematic diagram of the middle part II;

[0030] Figure 4 yes Figure 1 The enlarged schematic diagram of the middle part I;

[0031] Figure 5 It is a schematic diagram of the assembly of the drive end bearing assembly and the test shaft in the tooling of the utility model;

[0032] Figure 6 It is a left side schematic diagram of the assembly of the drive end bearing assembly and the test shaft in the tooling of the utility model;

[0033] Figure 7 It is a schematic diagram of the assembly of the non-drive end bearing assembly and the test shaft in the tooling of the utility model;

[0034] Figure 8 It is a left side schematic diagram of the assembly of the non-drive end bearing assembly and the test shaft in the tooling of the utility model;

[0035] Fig. 9 It is a schematic diagram of the process of assembling a semi-direct drive permanent magnet wind turbine using the tooling of the utility model;

[0036] Fig.10 This is a state diagram of the semi-direct-drive permanent magnet wind turbine generator during testing after the tooling of the utility model is assembled.

[0037] In the figure: 1 is a bearing frame; 1-1 is a vertical section; 1-2 is a horizontal section; 1-3 is a reinforcing rib; 2 is a test end cover; 2-1 is a front cover; 2-2 is a rear cover; 2-3 is a connector; 3 is a drive end bearing assembly; 4 is a non-drive end; 5 is a test shaft; 6 is a limit plate; 7 is a guide rod; 8 is a grounding carbon brush; 9 is an insulating assembly; 10 is a turning rack; 11 is a hanging hole; 12 is a cooling vent; 21 is a stopper; 31 is a first oil thrower; 32 is a first bearing outer cover; 33 is a first insulating bearing sleeve; 34 is a deep groove ball bearing; 35 is the first bearing inner cover; 36 is the first oil filling cup; 37 is the first temperature sensor; 41 is the second oil slinger; 42 is the second bearing outer cover; 43 is the second insulating bearing sleeve; 44 is a cylindrical roller bearing; 45 is the second bearing inner cover; 46 is the second oil filling cup; 47 is the second temperature sensor; 51 is the rear end step; 91 is the insulating sleeve; 92 is the radial insulating pad; 93 is the axial insulating pad; A is the generator stator; B is the generator rotor; C is the generator end cover; L is the distance between the stop of the front cover and the rear end step of the test shaft. DETAILED DESCRIPTION

[0038] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices consistent with some aspects of the utility model as detailed in the attached claims.

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] See also Figures 1 to 10The embodiment of the utility model provides a multi-purpose tool for assembling and testing a semi-direct-drive permanent magnet wind turbine, comprising a carrier frame 1 with a right-angled cross section, a test end cover 2 is installed on the inner side of a vertical section 1-1 of the carrier frame 1, and the test end cover 2 is composed of a hollow structure and a coaxial front cover plate 2-1 and a rear cover plate 2-2 fixedly connected by a plurality of connectors 2-3; wherein the front cover plate 2-1 and the rear cover plate 2-2 are both hollow disc structures, and the outer diameter of the front cover plate 2-1 is larger than that of the rear cover plate 2- 2, the number of connecting pieces 2-3 is multiple and they are distributed in a circular array with the inner hole opened by the front and rear cover plates as the center, and the front cover plate 2-1 and the rear cover plate 2-2 are connected as an integral structure, the front cover plate 2-1 is connected to the vertical section 1-1 of the carrier frame 1 through a circle of multiple fastening bolts, the front cover plate 2-1 is provided with a circle of stoppers 21 that match the stator frame of the generator stator A, and the test end cover 2 is detachably connected to the generator stator A at the stoppers through multiple bolts evenly distributed. The test end cover 2 is rotatably connected with a horizontally arranged test shaft 5, and one end of the test shaft 5 passes through the vertical section 1-1, and the other end passes through the rear cover plate 2-2; wherein, the front cover plate 2-1 is rotatably connected to the corresponding positions of the test shaft 5 through the drive end bearing assembly 3, and the rear cover plate 2-2 is rotatably connected to the corresponding positions of the test shaft 5 through the non-drive end bearing assembly 4.

[0041] The utility model tooling also includes a limit plate 6 and a guide rod 7 for assembling the generator rotor B. In this embodiment, the number of the limit plates 6 is three, and the three limit plates 6 are arranged in a circular shape along the outer end surface of the stator frame and are detachably connected thereto, and are used to limit the circumferential direction of the generator rotor B. The number of the guide rods 7 is also three, and one end of each guide rod 7 is provided with an external thread. One end of the three guide rods 7 with an external thread is screwed into the internal thread hole at one end of the test shaft 5 passing through the rear cover plate 2-2, and the other end passes through the preset through hole of the generator rotor B. The limit plate 6 and the guide rod 7 jointly prevent the rotor from adsorbing the inner hole of the stator and assembling and positioning when the rotor is transferred, so that after the rotor falls, its preset through hole corresponds one by one with the internal thread hole of the test shaft 5, which is convenient for the two to be detachably connected by bolts.

[0042] Furthermore, in the embodiment of the utility model, the limit plate 6 and the guide rod 7 are made of non-magnetic materials, such as stainless steel. Of course, other non-magnetic materials can also be used, and the utility model does not make specific restrictions. The dimension L (the gap between the stop of the front cover plate and the rear end step of the test shaft) in the assembly drawing of the test tooling of the utility model is set, and the dimension L must be consistent with the product drawing to ensure the axial positioning dimension of the stator and rotor of the product.

[0043] Specifically, in the embodiment of the utility model, the support frame 1 is a frame-type structure, and the inner side surface of the vertical section 1-1 and the bottom surface of the horizontal section 1-2 are paved with steel plates to ensure the parallelism between the whole machine and the test platform. During the transfer and testing, the support frame 1 needs to bear the weight of the generator stator, rotor and end cover in addition to the weight of the tooling itself. For this reason, a plurality of reinforcing ribs 1-3 are arranged between the vertical section 1-1 and the horizontal section 1-2. Of course, sufficient space should be reserved when the reinforcing ribs 1-3 are arranged to avoid interference with the generator to be assembled. In addition, a fixed counterweight can be arranged in the frame of the horizontal section 1-2 to ensure that the tooling bears the weight of the whole machine during the test and provides sufficient structural rigidity to avoid harmful deformation and vibration during the experiment. In addition, an inner stopper which cooperates with the test end cover 2 is provided on the inner side of the vertical section 1-1 of the carrier frame 1 to ensure that the mounting hole opened in the vertical section 1-1 is coaxial with the stopper 21 of the test end cover 2, and three cooling ventilation holes 12 are evenly opened on the vertical section 1-1 and located on the circumference of the test shaft 5 for the entry of cooling air during the test of the semi-direct-drive permanent magnet wind turbine.

[0044] like Figure 5 , 6 As shown, the drive end bearing assembly 3 in the embodiment of the utility model includes a first oil slinger 31, a first bearing outer cover 32, a first insulating bearing sleeve 33, a deep groove ball bearing 34, a first bearing inner cover 35, a first oil filling cup 36 and a first temperature sensor 37; wherein, the deep groove ball bearing 34 is rotatably arranged on the circumferential surface of the test shaft 5, the first bearing outer cover 32 and the first bearing inner cover 35 are respectively located on both sides of the deep groove ball bearing 34, and the first bearing outer cover 32 is arranged close to the carrier frame 1 relative to the first bearing inner cover 35, and the first temperature sensor 37 is installed on the first bearing outer cover 32, the first oil slinger 31 is located between the first bearing outer cover 32 and the deep groove ball bearing 34, the first insulating bearing sleeve 33 is arranged on the circumferential surface of the deep groove ball bearing 34, and is detachably connected to the first bearing outer cover 32 and the first bearing inner cover 35, and the first oil filling cup 36 is installed on the first bearing inner cover 35.

[0045] like Figure 7 , 8As shown, the structure of the non-drive end bearing assembly 4 in the embodiment of the utility model is basically the same as that of the drive end bearing assembly 3, which includes a second oil slinger 41, a second bearing outer cover 42, a second insulating bearing sleeve 43, a cylindrical roller bearing 44, a second bearing inner cover 45, a second oil filling cup 46 and a second temperature sensor 47; wherein, the cylindrical roller bearing 44 is rotatably arranged on the circumferential surface of the test shaft 5, the second bearing outer cover 42 and the second bearing inner cover 45 are respectively located on both sides of the cylindrical roller bearing 44, and the second bearing outer cover 42 is arranged close to the carrier frame 1 relative to the second bearing inner cover 45, and the second temperature sensor 47 is installed on the second bearing outer cover 42, the second oil slinger 41 is located between the second bearing outer cover 42 and the cylindrical roller bearing 44, the second insulating bearing sleeve 43 is arranged on the circumferential surface of the cylindrical roller bearing 44, and is detachably connected to the second bearing outer cover 42 and the second bearing inner cover 45, and the second oil filling cup 46 is installed on the second bearing inner cover 45.

[0046] In the embodiment of the utility model, the test shaft 5 is a stepped shaft, the distance of the test shaft 5 extending from the vertical section 1-1 is designed according to the coupling interface size, the other end is designed according to the rotor interface size and equipped with a guide rod 7, the middle is equipped with a bearing assembly position, and meets the rotor high-speed rotation strength requirements under the conditions of torque transmission and electromagnetic force. In addition, the bearing assembly setting "front ball and rear column" on the test fixture of the utility model is significant in that the ball bearing axially positions the entire rotor and overcomes the unilateral magnetic pull that the rotor bears during the test; the column bearing mainly bears the radial force of the rotor.

[0047] The embodiment of the utility model can provide rotational support and torque for the rotor during the test of the wind turbine generator through the arrangement of the drive end bearing assembly 3, the non-drive end bearing assembly 4 and the test shaft 5, and has the function of monitoring the operating temperature of the bearing during the test.

[0048] The utility model tooling also includes a grounding carbon brush 8, which contacts the test shaft 5 and is detachably connected to the bearing outer cover 32. In addition, in the utility model, the drive end bearing assembly 3 is detachably connected to the front cover plate 2-1 by bolts, and the non-drive end bearing assembly 4 is detachably connected to the rear cover plate 2-2 by bolts, and an insulating assembly 9 of the same structure is provided at the connection point. Figure 1 , 3, 4; specifically, the insulating assembly 9 includes an insulating sleeve 91, a radial insulating pad 92 and an axial insulating pad 93; when the driving end bearing assembly 3 is connected to the front cover plate 2-1 and the non-driving end bearing assembly 4 is connected to the rear cover plate 2-2, the stoppers provided on the first insulating bearing sleeve 33 and the second insulating bearing sleeve 43 respectively cooperate with the corresponding front cover plate 2-1 and rear cover plate 2-2, the insulating sleeve 91 is sleeved on the side of the bolt close to the nut, and a radial insulating pad 92 is provided between the nut of the bolt and the first insulating bearing sleeve 33 or the second insulating bearing sleeve 43, and the first insulating bearing sleeve 33, the second insulating bearing sleeve 43 and the corresponding front cover plate 2-1 and rear cover plate 2-2 are provided with radial insulating pads 92 and axial insulating pads 93 in the vertical direction and horizontal direction. From the above content, it can be known that the grounding carbon brush 8 and the insulating assembly 9 provided in the embodiment of the utility model can prevent the damage to the bearing caused by the rotor shaft voltage and shaft current during the test, extend the service life of the tooling, and at the same time avoid interfering with the real data of the rotor shaft voltage and shaft current collected during the test.

[0049] When assembling the semi-direct-drive permanent magnet wind turbine, the utility model needs to turn the tooling counterclockwise by 90°, that is, to make the test shaft 5 perpendicular to the ground, so as to facilitate the installation of the generator stator A, the generator rotor B and the generator end cover C in sequence from the vertical direction. Therefore, in order to facilitate the operation of the lifting equipment, the ends of the vertical section 1-1 and the horizontal section 1-2 of the carrier frame 1 are provided with lifting holes 11 that cooperate with the lifting rings. At the same time, after turning counterclockwise by 90 degrees, the extended test shaft 5 makes it difficult to place the tooling stably. Therefore, the utility model specially sets a turning-over placement frame 10, the height of which is greater than the distance that the test shaft 5 extends out of the carrier frame 1, so that after the tooling is stably placed on the turning-over placement frame 10, there is a distance between the test shaft 5 and the ground.

[0050] The utility model also provides a process for using a multi-purpose tool for assembling and testing a semi-direct-drive permanent magnet wind turbine, which includes the following specific steps:

[0051] 1) First, assemble the driving end bearing assembly 3 and the non-driving end bearing assembly 4 on the test shaft 5 respectively; then, insulate and assemble the driving end bearing assembly 3 and the front cover plate 2-1 of the test end cover 2, and the non-driving end bearing assembly 4 and the rear cover plate 2-2 of the test end cover 2 into one piece; then, fix the front cover plate 2-1 of the test end cover 2 on the inner side of the vertical section 1-1 of the carrier frame 1, and finally install the grounding carbon brush 8;

[0052] 2) Turn the tooling assembled in step 1 counterclockwise by 90 degrees and place it on the turning rack 10, so that the test shaft 5 is perpendicular to the ground and keeps a certain distance from the ground;

[0053] 3) First, match the stator base stop of the generator stator A with the stop 21 of the front cover 2-1, and fasten them with fasteners; then evenly install multiple limit plates 6 on the upper end surface of the stator base, and arrange three guide rods 7 in a circular shape on one end of the test shaft 5 that passes through the rear cover 2-2, and the other end of each of the guide rods 7 passes through the preset through hole of the generator rotor B. Under the action of limiting and guiding, the generator rotor B gradually falls until it contacts the end surface of the test shaft 5. At this time, remove the guide rod 7, and use fasteners to fasten the generator rotor B to the test shaft 5. After connection, remove the limit plate 6; finally, install the generator end cover C and other accessories, and complete the general assembly of the semi-direct drive permanent magnet wind turbine. The assembly process is as follows Fig. 9 After the general assembly is completed, the whole is rotated 90 degrees clockwise so that the test axis 5 is parallel to the ground, as shown in FIG. Fig.10 As shown, relevant experimental verification is carried out.

[0054] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0055] It should be understood that the present invention is not limited to the above-described contents, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A multi-purpose tool for assembling and testing a semi-direct drive permanent magnet wind turbine, characterized in that: The invention comprises a support frame (1) having a right-angled cross section, wherein a test end cover (2) is installed on the inner side of a vertical section (1-1) of the support frame (1), wherein the test end cover (2) is composed of a hollow structure and a coaxial front cover plate (2-1) and a rear cover plate (2-2) fixedly connected via a plurality of connecting members (2-3), wherein the front cover plate (2-1) is rotatably connected to a test rotating shaft (5) coaxially arranged in the test end cover (2) via a driving end bearing assembly (3) and the rear cover plate (2-2) is rotatably connected to a test rotating shaft (5) coaxially arranged in the test end cover (2) via a non-driving end bearing assembly (4), and one end of the test rotating shaft (5) passes through the vertical section (1-1) and the other end passes through the rear cover plate (2-2); Wherein, the front cover plate (2-1) of the test end cover (2) is detachably connected to the stator frame of the generator stator (A); It also includes a limit plate (6) and a guide rod (7) for assembling the generator rotor (B), wherein the limit plates (6) are multiple, and the multiple limit plates (6) are arranged in a circular shape along the outer end surface of the stator frame and are detachably connected thereto, and are used to limit the circumferential direction of the generator rotor (B), and the guide rods (7) are multiple, and the multiple guide rods (7) are arranged in a circular shape on the rear end step (51) of the test shaft (5) passing through the rear cover plate (2-2) and are detachably connected thereto, and the other end of each guide rod (7) passes through a preset through hole of the generator rotor (B), and the generator rotor (B) is detachably connected to the test shaft (5) via the preset through hole and fasteners.

2. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 1 is characterized in that: The drive end bearing assembly (3) comprises a first oil slinger (31), a first bearing outer cover (32), a first insulating bearing sleeve (33), a deep groove ball bearing (34), a first bearing inner cover (35), a first oil filling cup (36) and a first temperature sensor (37); The deep groove ball bearing (34) is rotatably arranged on the circumferential surface of the test shaft (5); the first bearing outer cover (32) and the first bearing inner cover (35) are respectively located on both sides of the deep groove ball bearing (34); the first bearing outer cover (32) is arranged close to the bearing frame (1) relative to the first bearing inner cover (35); the first temperature sensor (37) is installed on the first bearing outer cover (32); the first oil slinger (31) is located between the first bearing outer cover (32) and the deep groove ball bearing (34); the first insulating bearing sleeve (33) is arranged on the circumferential surface of the deep groove ball bearing (34) and is detachably connected to the first bearing outer cover (32) and the first bearing inner cover (35); and the first oil filling cup (36) is installed on the first bearing inner cover (35).

3. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 2, characterized in that: The tooling also includes a grounding carbon brush (8), wherein the grounding carbon brush (8) is in contact with the test shaft (5) and is detachably connected to the bearing outer cover (32).

4. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 2, characterized in that: The non-drive end bearing assembly (4) comprises a second oil slinger (41), a second bearing outer cover (42), a second insulating bearing sleeve (43), a cylindrical roller bearing (44), a second bearing inner cover (45), a second oil filling cup (46) and a second temperature sensor (47); The cylindrical roller bearing (44) is rotatably arranged on the circumferential surface of the test shaft (5); the second bearing outer cover (42) and the second bearing inner cover (45) are respectively located on both sides of the cylindrical roller bearing (44); the second bearing outer cover (42) is arranged close to the carrier frame (1) relative to the second bearing inner cover (45); the second temperature sensor (47) is installed on the second bearing outer cover (42); the second oil slinger (41) is located between the second bearing outer cover (42) and the cylindrical roller bearing (44); the second insulating bearing sleeve (43) is arranged on the circumferential surface of the cylindrical roller bearing (44) and is detachably connected to the second bearing outer cover (42) and the second bearing inner cover (45); and the second oil filling cup (46) is installed on the second bearing inner cover (45).

5. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 4, characterized in that: The drive end bearing assembly (3) is detachably connected to the front cover plate (2-1) via bolts, and the non-drive end bearing assembly (4) is detachably connected to the rear cover plate (2-2) via bolts, and insulating assemblies (9) of the same structure are provided at the connection points.

6. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 5, characterized in that: The insulating assembly (9) comprises an insulating sleeve (91), a radial insulating pad (92) and an axial insulating pad (93); When the driving end bearing assembly (3) is connected to the front cover plate (2-1) and the non-driving end bearing assembly (4) is connected to the rear cover plate (2-2), the stoppers provided on the first insulating bearing sleeve (33) and the second insulating bearing sleeve (43) respectively cooperate with the corresponding front cover plate (2-1) and the rear cover plate (2-2); the insulating sleeve (91) is sleeved on the side of the bolt close to the nut; a radial insulating gasket (92) is provided between the nut of the bolt and the first insulating bearing sleeve (33) or the second insulating bearing sleeve (43); and radial insulating gaskets (92) and axial insulating gaskets (93) are correspondingly provided in the vertical direction and the horizontal direction between the first insulating bearing sleeve (33), the second insulating bearing sleeve (43) and the corresponding front cover plate (2-1) and the rear cover plate (2-2).

7. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 1, characterized in that: The number of the limiting plates (6) and the number of the guiding rods (7) are both three, and the limiting plates (6) and the guiding rods (7) are both made of non-magnetic conductive materials.

8. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 1, characterized in that: The tooling also includes a turning and placing frame (10), and the height of the turning and placing frame (10) is greater than the distance that the test rotating shaft (5) extends out of the bearing frame (1).

9. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 1, characterized in that: The ends of the vertical section (1-1) and the horizontal section (1-2) of the carrier (1) are both provided with lifting holes (11) that cooperate with lifting rings, and a plurality of reinforcing ribs (1-3) are provided between the vertical section (1-1) and the horizontal section (1-2).

10. The multi-purpose tooling for assembling and testing a semi-direct drive permanent magnet wind turbine according to claim 1, characterized in that: An inner stopper which cooperates with the test end cover (2) is arranged on the inner side of the vertical section (1-1) of the carrier frame (1), and three cooling ventilation holes (12) are evenly arranged on the vertical section (1-1) and located in the circumferential direction of the test shaft (5) for the entry of cooling air during the test of the semi-direct-drive permanent magnet wind turbine.

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