Stator and rotor assembling device for large wind driven generator

Abstract

The utility model belongs to the technical field of assembling devices, and particularly relates to a stator and rotor assembling device for a large wind driven generator, which comprises a lifting appliance, an adjusting mechanism is arranged on a lifting rope of the lifting appliance, the adjusting mechanism comprises a first sleeve, a second sleeve and a bidirectional threaded rod, and a generator rotor and a generator stator are arranged at the bottom end of the lifting appliance. The top end of the generator rotor is connected with a sliding sleeve through a bolt, the interior of the generator stator is connected with a guide cylinder through a bolt, and the top end of the lifting appliance is connected with a connecting block. Through the use of the adjusting mechanism, the length of the lifting rope on the lifting appliance can be adjusted, then the distance between the bottom surface of the generator rotor at four lifting points and the platform is measured by matching with the measuring scale, and the generator rotor is in a horizontal state by adjusting the length of the lifting rope on the lifting appliance through the adjusting mechanism. And then descending and assembling with the generator stator. Therefore, the assembly precision is improved, the assembly time is shortened, and the problem that the lifted generator rotor cannot be kept in a parallel state due to the fact that the lifting ropes with the same length are difficult to adapt to the gravity center characteristics is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of assembly device, specifically relates to be used for large -scale wind driven generator stator rotor assembly device. BACKGROUND

[0002] With the rapid development of wind power generation technology, the single machine capacity of wind turbine is increasing, and the size and weight of stator and rotor are also increasing. Further in the assembly of large wind driven generator stator and rotor, assembly device is needed, which is cooperated with lifting device through lifting appliance, and then the generator rotor is lifted, and then the generator rotor is moved to the top of generator stator by using lifting device, and then is assembled by descending. However, the existing assembly process has obvious defects. The length of lifting rope on lifting appliance is consistent, and the structure of generator rotor is complex, and the gravity center is unevenly distributed. The same length of lifting rope is difficult to adapt to the gravity center characteristics, so that the generator rotor after lifting cannot keep parallel state. When assembling with motor stator, this deviation will cause the difficulty of the butt joint of the two, greatly reduce the assembly accuracy, and make the performance of the assembled unit difficult to reach the best state. At the same time, repeated adjustment of rotor position to try accurate assembly will consume a lot of time, seriously delay the assembly progress, and increase the time cost and labor cost of the project. SUMMARY

[0003] The utility model aims at providing large -scale wind driven generator stator rotor assembly device, aiming at solving the obvious defects in the existing assembly process in the prior art. The length of lifting rope on lifting appliance is consistent, and the structure of generator rotor is complex, and the gravity center is unevenly distributed. The same length of lifting rope is difficult to adapt to the gravity center characteristics, so that the generator rotor after lifting cannot keep parallel state. When assembling with motor stator, this deviation will cause the difficulty of the butt joint of the two, greatly reduce the assembly accuracy, and make the performance of the assembled unit difficult to reach the best state. At the same time, repeated adjustment of rotor position to try accurate assembly will consume a lot of time, seriously delay the assembly progress, and increase the time cost and labor cost of the project.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: large -scale wind driven generator stator rotor assembly device, including lifting appliance, the lifting rope of lifting appliance is provided with adjusting mechanism, the adjusting mechanism includes first sleeve, second sleeve and bidirectional screw rod, the bottom of lifting appliance is provided with generator rotor and generator stator, the top of generator rotor is connected with sliding sleeve through bolt, the inside of generator stator is connected with guide cylinder through bolt, the top of lifting appliance is connected with connecting block.

[0005] As the utility model for large -scale wind driven generator stator rotor assembly device is preferred, the first sleeve is connected on the lifting rope of lifting appliance, and the second sleeve is connected on the lifting rope of lifting appliance.

[0006] As the utility model is used for large wind driven generator stator rotor assembly device preferred, two-way threaded rod's both ends respectively with second sleeve and first sleeve's inside threaded connection.

[0007] As the utility model is used for large wind driven generator stator rotor assembly device preferred, two-way threaded rod's both ends respectively with second sleeve and first sleeve's inside threaded connection.

[0008] As the utility model is used for large wind driven generator stator rotor assembly device preferred, two-way threaded rod's both ends respectively with second sleeve and first sleeve's inside threaded connection.

[0009] As the utility model is used for large wind driven generator stator rotor assembly device preferred, two-way threaded rod's both ends respectively with second sleeve and first sleeve's inside threaded connection.

[0010] As the utility model is used for large wind driven generator stator rotor assembly device preferred, two-way threaded rod's both ends respectively with second sleeve and first sleeve's inside threaded connection.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] Through the use of adjusting mechanism, the length of the lifting rope on the lifting appliance can be adjusted, and then the distance between the four lifting points and the platform of the generator rotor bottom surface is measured by cooperating with the measuring ruler, the length of the lifting rope on the lifting appliance is adjusted by the adjusting mechanism to make the generator rotor in a horizontal state. Then it is lowered and assembled with the generator stator. This improves the assembly precision and reduces the assembly time, avoids the problem that the same length of lifting rope is difficult to adapt to the gravity center characteristics, so that the lifted generator rotor cannot maintain a parallel state.

[0013] Through the use of the anti-skid pad made of soft rubber material with high friction, the friction between the hand and the operating part of the adjusting mechanism can be effectively increased, the slipping during operation is avoided, the pressure on the hand during operation is buffered, and the comfort of the use of the adjusting mechanism is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model and constitute a part of the specification, which are used together with embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0015] Figure 1 It is the main body structure schematic view of the utility model;

[0016] Figure 2 It is the main body front view structure schematic view of the utility model;

[0017] Figure 3 The adjusting mechanism structure sectional view of the utility model;

[0018] Figure 4 The adjusting mechanism split structure sectional view of the utility model.

[0019] In the drawing: 1, generator rotor; 2, generator stator; 3, sliding sleeve; 4, guide cylinder; 5, lifting appliance; 6, connecting block; 7, adjusting mechanism; 71, first sleeve; 72, second sleeve; 73, bidirectional threaded rod; 74, antiskid pad; 75, limiting block; 76, lug. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Please refer to Figure 1 - Figure 4 The utility model provides the following technical scheme: a device for assembling stator and rotor of large wind driven generator, including lifting appliance 5, setting up adjusting mechanism 7 on the lifting rope of lifting appliance 5, adjusting mechanism 7 includes first sleeve 71, second sleeve 72 and bidirectional threaded rod 73, the bottom of lifting appliance 5 is provided with generator rotor 1 and generator stator 2, the top of generator rotor 1 is connected with sliding sleeve 3 through bolt, the inside of generator stator 2 is connected with guide cylinder 4 through bolt, the top of lifting appliance 5 is connected with connecting block 6.

[0022] Preferably: first sleeve 71 is connected on the lifting rope of lifting appliance 5, and second sleeve 72 is connected on the lifting rope of lifting appliance 5.

[0023] When used, one end of first sleeve 71 is connected to the designated position of the lifting rope to ensure that the two are tightly connected and there is no sign of looseness. Then, in the same way, one end of second sleeve 72 is connected to the designated position of the lifting rope at the lower position of first sleeve 71, and the connection of first sleeve 71 and second sleeve 72 is on the same lifting rope, ensuring that the two sleeves are firmly in place on the lifting rope. In subsequent operations involving the adjustment of the length of the lifting rope, first sleeve 71 and second sleeve 72 can cooperate with bidirectional threaded rod 73 to adjust the length of the same lifting rope, thereby adjusting the horizontal state of the hoisted generator rotor 1, laying the foundation for the subsequent high-precision assembly with generator stator 2.

[0024] Preferably: the two ends of bidirectional threaded rod 73 are respectively threadedly connected with the interiors of second sleeve 72 and first sleeve 71.

[0025] Specific use, when the need to adjust the length of the sling to ensure that the generator rotor 1 hoisting in a horizontal state, the operator in a convenient position, palm holding the two-way threaded rod 73 clockwise rotation, because the two-way threaded rod 73 and the internal thread of the second sleeve 72 and the first sleeve 71 cooperation, with the two-way threaded rod 73 rotation, it will be in the first sleeve 71 along the thread direction linear movement. At the same time, the other end of the two-way threaded rod 73 also in the second sleeve 72 synchronous rotation and movement. Will make the first sleeve 71 and the second sleeve 72 close to each other, thereby shortening the effective length of the sling; conversely, if the two-way threaded rod 73 counterclockwise rotation, will make the first sleeve 71 and the second sleeve 72 away from each other, increase the effective length of the sling. The operator in the process of rotating the two-way threaded rod 73, need to keep the distance between the four sling generator rotor 1 bottom distance platform, through the continuous fine tuning of the two-way threaded rod 73 rotation direction and the number of turns, adjust the length of each sling, until the generator rotor 1 to achieve a horizontal hoisting state, for the subsequent high precision assembly with the generator stator 2 to do a good job.

[0026] Preferred: the two-way threaded rod 73 surface of the opposite screw symmetry.

[0027] Specific use, when the operator rotates the two-way threaded rod 73 for length adjustment of the sling, because the opposite screw symmetrical distribution, the first sleeve 71 and the second sleeve 72 will be in the same rate along the two-way threaded rod 73 in opposite directions. For example, when the two-way threaded rod 73 clockwise rotation, with the first sleeve 71 of the positive thread cooperation will move upwards, while the second sleeve 72 with the reverse thread cooperation will move downwards, and the distance between the two is equal. This makes the adjustment process more stable, controllable. The operator does not need to adjust the two sleeves separately, greatly simplifying the operation process, reducing the adjustment difficulty, improving the adjustment efficiency.

[0028] Preferred: the two-way threaded rod 73 of the center of the outer wall is integrally connected with the protrusion 76, the two-way threaded rod 73 and the protrusion 76 cross section is "X" shape.

[0029] Specific use, when the operator needs to rotate the two-way threaded rod 73 to adjust the length of the sling, because the two-way threaded rod 73 size is less than the first sleeve 71 and the second sleeve 72, resulting in artificial palm is difficult to hold the two-way threaded rod 73 for rotation, and then the connecting protrusion 76 is convenient for the operator to hold the palm, and then rotate the protrusion 76 can drive the two-way threaded rod 73 for synchronous rotation, for the use of the two-way threaded rod 73 to provide convenience.

[0030] Preferred: the outer wall of the protrusion 76 is adhered with the non-slip pad 74, and the non-slip pad 74 is annular.

[0031] Specific use, when the operator holds the convex block 76 rotation, its non-slip mat 74 will be in contact with the palm of the operator, non-slip mat 74 with soft and high friction rubber material made, not only can effectively increase the friction between the hands and the operating part of the adjustment mechanism 7, to avoid the operation slip, but also can buffer the pressure on the hand during operation, to ensure the comfort of the adjustment mechanism 7.

[0032] Preferably: the end of the bidirectional threaded rod 73 is connected to the limit block 75, the size of the limit block 75 is greater than the size of the bidirectional threaded rod 73.

[0033] Specific use, when the operator rotates the bidirectional threaded rod 73, its bidirectional threaded rod 73 from the first sleeve 71 and the second sleeve 72 out, its through the limit block 75 can limit the movement position, avoid the first sleeve 71 and the second sleeve 72 from the end of the bidirectional threaded rod 73 accidentally off, resulting in the risk of rope out of control, assembly work interrupted even cause safety accidents.

[0034] The working principle is as follows: when the stator and rotor of a large wind turbine are assembled, the connecting block 6 is connected with a lifting device, which is a mature technology and thus will not be described in detail. Then, the hooks on the lifting device 5 are connected with the sliding sleeve 3, and then the lifting device works to lift and move the rotor 1, and the lifting distance is about 50 cm from the assembly platform. At this time, the rotor 1 is at the top of the stator 2, and then the distance between the four lifting points and the platform is measured by a ruler. If the rotor 1 is not in a horizontal state when lifted by the lifting device 5, the operator holds the protruding block 76. At the same time, the anti-skid pad 74 is in contact with the palm of the operator's hand. The anti-skid pad 74 is made of soft rubber material with high friction, which can effectively increase the friction between the hand and the operating part of the adjusting mechanism 7, avoid slipping during operation, and buffer the pressure on the hand during operation, ensuring the comfort of the adjusting mechanism 7. Then, the operator rotates the protruding block 76. Since the bidirectional threaded rod 73 is matched with the internal threads of the second sleeve 72 and the first sleeve 71, as the bidirectional threaded rod 73 rotates, the bidirectional threaded rod 73 moves linearly in the first sleeve 71 along the thread direction. At the same time, the other end of the bidirectional threaded rod 73 also rotates and moves synchronously in the second sleeve 72. This will make the first sleeve 71 and the second sleeve 72 approach each other, thereby shortening the effective length of the lifting rope; on the contrary, if the bidirectional threaded rod 73 is rotated counterclockwise, the first sleeve 71 and the second sleeve 72 will move away from each other, increasing the effective length of the lifting rope. During the rotation of the bidirectional threaded rod 73, the operator needs to constantly measure the distance between the four lifting points and the platform with a ruler, and adjust the length of each lifting rope by constantly adjusting the rotation direction and number of turns of the bidirectional threaded rod 73, until the rotor 1 reaches a horizontal lifting state. Then, the rotor 1 is lowered by the lifting device to assemble the rotor 1 and the stator 2. The use of the sliding sleeve 3 and the guide cylinder 4 allows the sliding sleeve 3 on the rotor 1 to move along the outer wall of the guide cylinder 4 on the stator 2. Under the guidance of the guide cylinder 4, the rotor 1 moves accurately, and the rotor 1 and the stator 2 gradually approach each other until the assembly is completed.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements of some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. Assembly device for large wind generator stator and rotor, comprising a spreader (5), characterized in that: The adjusting mechanism (7) is arranged on the lifting rope of the lifting appliance (5), and comprises a first sleeve (71), a second sleeve (72) and a bidirectional threaded rod (73). The bottom end of the lifting appliance (5) is provided with a generator rotor (1) and a generator stator (2), the top end of the generator rotor (1) is connected with a sliding sleeve (3) through bolts, the inside of the generator stator (2) is connected with a guide cylinder (4) through bolts, and the top end of the lifting appliance (5) is connected with a connecting block (6).

2. The assembly device for large wind generator rotor and stator according to claim 1, characterized in that: The first sleeve (71) is connected on the lifting rope of the lifting appliance (5), and the second sleeve (72) is connected on the lifting rope of the lifting appliance (5).

3. The assembly device for large wind generator rotor and stator according to claim 1, characterized in that: The two ends of the bidirectional threaded rod (73) are respectively threadedly connected with the inside of the second sleeve (72) and the first sleeve (71).

4. The assembly device for large wind power generator rotor and stator according to claim 1, characterized in that: The opposite threads on the surface of the bidirectional threaded rod (73) are symmetrical.

5. The assembly device for large wind generator rotor and stator according to claim 1, characterized in that: The outer wall of the center of the bidirectional threaded rod (73) is integrally connected with a protruding block (76), and the cross section of the bidirectional threaded rod (73) and the protruding block (76) is in the shape of a cross.

6. The assembly device for large wind generator rotor and stator according to claim 5, characterized in that: The outer side wall of the protruding block (76) is attached with a non-slip pad (74), and the non-slip pad (74) is in the shape of a ring.

7. The assembly device for large wind generator rotor-stator according to claim 6, characterized in that: The end of the bidirectional threaded rod (73) is connected with a limiting block (75), and the size of the limiting block (75) is greater than the size of the bidirectional threaded rod (73). The end of the bidirectional threaded rod (73) is connected with a limiting block (75), and the size of the limiting block (75) is greater than the size of the bidirectional threaded rod (73).

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