CN205241039U - Installation hoist of generator - Google Patents

Abstract

The utility model provides a generator installation hanger, the installation hanger includes a hanger body, the first hanger and the second hanger are arranged on the hanger body, and one end of the hanger body is a ring structure , the annular structure is provided with a connecting flange matching the flange on the main shaft of the generator to be hoisted, and at least one auxiliary lifting eye is also provided on the hanger body. The generator installation hanger of the utility model is tightly connected to the generator through the connecting flange, which can effectively avoid the phenomenon that the generator is not firmly connected and the generator is dropped. At the same time, the auxiliary lifting lug cooperates with the first lifting lug Hoisting and turning over the generator reduces the weight of each crane, reduces the tonnage of the crane, and saves costs.

Description

Generator installation spreader

technical field

The utility model relates to equipment hoisting technology, in particular to a generator installation hanger.

Background technique

The installation process of the existing wind turbine generator is mainly through the two symmetrical lifting lugs set on the generator, the main crane and the spreader lift the generator by lifting the lifting lugs, and install the turning spreader on the outer edge of the generator , the spreader is connected with the auxiliary crane to turn over the generator. After turning over, the main crane lifts the generator, and then connects the generator to the base in the engine room. After the installation is completed, the staff disassembles the spreader outside the engine room.

In order to solve this problem, a generator hoisting device is provided with a flange on the sling body, and the flange on the body is bolted to the connecting flange on the generator, thereby avoiding the need to directly lift the generator lug and cause deformation of the generator. However, this device can only lift the generator and turn over, but cannot form a certain angle with the installation surface of the generator, so that it is easy to form an upper opening with the installation surface of the generator when installing the generator, and then cause the bearing of the generator to be damaged. damage. In addition, when the spreader is disassembled, it needs to be operated outside the engine room, and there is a risk of operation.

Another generator turn-over spreader is connected with the generator through at least three eccentric claw mechanisms, and is used for horizontal lifting and turn-over of the generator. After the generator is overturned, the connection line between the main lifting point and the center of gravity of the generator forms a certain angle with the installation surface of the generator, so as to facilitate the installation of the generator. However, since the overturning spreader is connected to the generator through the eccentric claws, after a long period of use, the claws are worn and cannot be effectively tightly connected to the generator, which may easily cause dangers such as the generator falling. In addition, when disassembling the spreader, it also needs to be operated outside the engine room, and there is a risk of operation.

Utility model content

The embodiment of the utility model provides a generator installation hanger to effectively connect and fix the generator, prevent the hoisted generator from falling, and reduce the load bearing capacity of the crane.

In order to achieve the above purpose, the embodiment of the utility model provides a generator installation hanger, which includes a hanger body, a first lifting lug and a second lifting lug are arranged on the spreader body, and one end of the hanger body is A ring structure, the ring structure is provided with a connecting flange matching the flange on the main shaft of the generator to be hoisted, and at least one auxiliary lifting lug is provided on the spreader body.

Further, the second lifting lug is located at the center of gravity of the spreader body.

Further, an included angle α is formed between the line connecting the rotation center of the first lifting lug and the center of gravity of the generator to be hoisted and the installation surface of the generator, and the included angle α is not less than the elevation angle of the generator cabin.

Further, the size of the included angle α is 1° to 10°.

Further, the first lifting lug is located on the end of the spreader body away from the ring structure, and the auxiliary lifting lugs include two and are symmetrically installed on the ring structure.

Further, the first lifting lug, the second lifting lug and the auxiliary lifting lug are lifting rings, shackles, connecting plates with threaded holes or connecting plates with through holes.

Further, the ring structure is a ring structure or a regular polygonal ring structure.

Further, the connecting flange is a circular or regular polygonal flange, and there are no less than 20 connecting holes on the connecting flange.

Further, a guardrail is also included, and the guardrail is welded to the spreader body or detachably connected by bolts.

Further, the guardrail includes a first pedal layer and a second pedal layer connected to each other, the second pedal layer is located between the first pedal layer and the spreader body, and the first pedal layer is connected to the generator. Corresponding to the manhole, the second pedal layer is provided with a channel communicating with the first pedal layer.

The generator installation hanger of the utility model is fastened to the generator through the connecting flange, which can effectively avoid the phenomenon that the generator is not firmly connected and the generator is dropped. At the same time, at least An auxiliary lifting lug cooperates with the first lifting lug to hoist and turn over the generator, which reduces the load-bearing capacity of each crane, reduces the tonnage of the crane, and saves costs.

Description of drawings

Fig. 1 is the structural representation of the installation hanger of the generator of the utility model embodiment;

Fig. 2 is the structural representation of the assembly of the installation hanger and the generator of the utility model embodiment;

Fig. 3 is the structural representation of generator;

Fig. 4 is a schematic diagram of the installation sling according to the embodiment of the present invention after turning over the generator;

Explanation of reference signs:

1. Spreader body; 1a, curved arm structure; 1b, connecting arm structure; 11. First lifting lug; 12. Second lifting lug; 13. Ring structure; 14. Connecting flange; 15. Auxiliary lifting lug; 16. Curved arm structure; 2. Guardrail; 21. First pedal layer; 22. Second pedal layer; 23. Channel; 3. Generator; 31. Main shaft; 32. Generator flange; 33. Generator entry Holes; 4, bolts.

detailed description

The generator installation hanger proposed by the embodiment of the utility model can be used for the hoisting of the generator of the permanent magnet direct drive wind power generating set, and of course it can also be used for the hoisting of other generators. For ease of understanding, a brief introduction to the relevant structure of the generator is given first.

As shown in FIG. 3 , the inner ring of the generator 3 has a main shaft 31 . The main shaft 31 is a member that supports the rotation of the generator 3, and is attached to the generator 3, and the protruding part of the main shaft 31 is long. A generator flange 32 is arranged on the main shaft 31 , and a generator inlet hole 33 is also arranged on the generator 3 , and the main shaft 31 and the generator inlet hole 33 are located on the same side of the generator 3 .

The installation hanger of the generator of the embodiment of the utility model is designed according to the structural characteristics of the above-mentioned generator, and the installation hanger of the generator of the embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the generator installation sling of the embodiment of the present invention includes a sling body 1, and the sling body 1 is provided with a first lifting lug 11 for lifting the generator and a hanger for installing the sling. The second lug 12. One end of the spreader body 1 is a ring-shaped structure 13, and the ring-shaped structure 13 is provided with a connecting flange 14 that matches the generator flange 32 on the generator main shaft 31 to be hoisted. By hoisting the second lifting lug 12, the The spreader is installed on the generator 3. In addition, at least one auxiliary lifting lug 15 for assisting in lifting and turning over the generator is provided on the spreader body 1 .

When using the installation sling to hoist the generator, use a crane to connect with the second lifting lug 12, put the main shaft 31 of the generator to be hoisted into the ring structure 13, and then lift the sling horizontally to connect the flange 14 It is opposite to the generator flange 32 and connected by bolts; then use a crane to hoist the first lifting lug 11 and the auxiliary lifting lug 15 to lift the generator 3 off the ground to an appropriate height, lift the first lifting lug 11 and lower the auxiliary lifting lug at the same time 15 Turn over the generator 3 until the generator reaches a vertical state; finally connect the generator 3 with its base in the nacelle and install it. The connecting flange 14 of the hanger is opposite to the generator flange 32 and is connected by bolts, which can effectively avoid phenomena such as weak connection of the generator and dropping of the generator.

In this embodiment, the auxiliary lifting lugs 15 preferably include two and are symmetrically installed on the ring structure 13. The two auxiliary lifting lugs 15 cooperate with the first lifting lugs 11 to lift and turn over the generator 3, reducing the number of cranes for each crane. The load bearing reduces the tonnage of the crane and saves costs. The auxiliary lifting lugs 15 are not limited to two, and one, three or more can be set according to the needs of the generator to be hoisted.

In order to connect the sling to the generator more conveniently, the second lifting lug 12 is arranged at the center of gravity of the sling body 1, which can make it more balanced and convenient for installation when the sling is lifted.

As shown in Figure 4, when the generator 3 is overturned, an included angle ɑ is formed between the rotation center of the first lifting lug 11 and the center of gravity of the generator 3 to be hoisted and the installation surface of the generator 3, and the included angle ɑ is not less than the elevation angle of the engine room of the generator 3, which can avoid forming an opening with the installation surface of the generator 3 when installing the generator 3, causing damage to the bearing of the generator, and can avoid contact with the generator 3 when installing the generator 3 Interference occurs between the main shaft, which facilitates the docking of the generator 3 and the base in the nacelle, and facilitates the installation of the generator.

In order to achieve the predetermined value of the above angle α, when designing and installing the spreader, preferably, the spreader body 1 includes a curved arm structure 1a and a connecting arm structure 1b, the first lifting lug 11 is located on the curved arm structure 1a, and the connecting arm structure 1b is parallel to the installation surface of the generator 3. The elevation angle of the engine room of the generator 3 has been determined at the time of delivery. A straight line L is made so that it passes through the center of gravity of the generator 3 and at the same time forms a distance not less than For the included angle ɑ of the elevation angle of the engine room of generator 3, the rotation center of the first lifting lug 11 must be located on the straight line L, and at the same time ensure that the included angle C is formed between the curved arm structure 1a and the connecting arm structure 1b, and the value of the included angle C is 0 Any value between -180°, excluding the two end values of 0° and 180°, can satisfy the connection between the rotation center of the first lifting lug 11 and the center of gravity of the generator 3 to be hoisted after the generator 3 is overturned. An included angle α is formed between the line and the installation surface of the generator 3, and the included angle α is not less than the elevation angle of the engine room of the generator 3.

Since different types of generators have different elevation angles of the nacelle when they leave the factory, according to the actual installation situation, the included angle ɑ is preferably any value between 1° and 10°, including the two extreme values of 1° and 10°, so as to meet different power generation requirements. machine installation requirements.

The first lifting lug 11 is located on the end of the spreader body 1 away from the ring structure 13. When lifting the generator, the main crane is connected to the first lifting lug 11 for lifting. The auxiliary lifting lugs 15 are connected for auxiliary lifting and turning over, so that the structure of the spreader is simplified, the weight is light, and the cost is saved. At the same time, it is easy to turn over the generator 3 .

The first lifting lug 11, the second lifting lug 12 and the auxiliary lifting lug 15 are the lifting ring structure shown in the drawings of this embodiment, but they are not limited to the lifting ring structure, and it can also use a shackle or a connecting plate with a threaded hole. Or a connection plate structure with through holes. The first lifting lug 11, the second lifting lug 12 and the auxiliary lifting lug 15 can be in the same structural form as above, and can also adopt a different structural form as above. For example, the first lifting lug 11 adopts a ring structure, the second lifting lug 12 and the auxiliary The lifting lug 15 adopts a shackle structure, which can be selected arbitrarily as required.

The ring structure 13 is not limited to the circular ring structure shown in the drawings of this embodiment, and a regular polygon ring structure, such as a regular quadrilateral ring structure, can also be used, as long as it can meet the requirements for the generator main shaft 31 to pass through That's it.

Correspondingly, the connecting flange 14 is not limited to the circular flange shown in the accompanying drawings of this embodiment, and can also be a regular polygonal flange, such as a regular quadrilateral flange. In order to ensure the connection strength, the connection on the connecting flange 14 The number of holes is preferably not less than 20.

In order to facilitate the disassembly of the spreader and at the same time ensure the personal safety of the operator, the installation spreader described in the above embodiments also includes a guardrail 2, which is detachably connected to the spreader body 1 through bolts 4. Of course, the guardrail 2 and the hanger The tool body 1 can also be fixed by welding, and the guardrail 2 can carry the staff and operating tools, so that the installation and disassembly of the spreader can be carried out in an orderly manner, and it is safe and reliable.

Specifically, the guardrail 2 includes a first pedal layer 21 and a second pedal layer 22 connected to each other, the second pedal layer 22 is located between the first pedal layer 21 and the spreader body 1, and the first pedal layer 21 is connected to the generator. Corresponding to the hole 33, the staff arrives at the first pedal layer 21 of the guardrail 2 through the generator manhole 33 from the cabin, which is safe and reliable, and convenient for installation. The channel 23, the first pedal layer 21 and the second pedal layer 22 are welded and fixed, the second pedal layer 22 is used to carry the staff and operating tools, and the staff enters the second pedal layer 22 from the first pedal layer 21 through the channel 23 to generate electricity After the disassembly work of the generator spreader is completed, the generator spreader can be used to go down the tower, which is safe, reliable, convenient and fast.

The generator installation hanger of the utility model is fastened to the generator through the connecting flange, which can effectively avoid the phenomenon that the generator is not firmly connected and the generator is dropped. At the same time, at least An auxiliary lifting lug cooperates with the first lifting lug to hoist and turn over the generator, which reduces the load-bearing capacity of each crane, reduces the tonnage of the crane, and saves costs.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. a mounting hanger for generator, is characterized in that, it comprises suspender body (1), instituteState and on suspender body (1), be provided with the first hanger (11) and the second hanger (12), suspender body (1)One end is circulus (13), in described circulus (13), is provided with and generator main to be liftedThe adpting flange (14) that flange on axle matches, is also provided with at least one on described suspender body (1)Individual auxiliary hanger (15).

2. the mounting hanger of generator according to claim 1, is characterized in that, described inThe second hanger (12) is positioned at the center of gravity place of suspender body (1).

3. the mounting hanger of generator according to claim 1, is characterized in that, described inThe line of the center of gravity of the pivot of the first hanger (11) and generator (3) to be lifted and describedBetween the installed surface of motor (3), form angle ɑ, described angle ɑ is not less than the machine of described generator (3)The elevation angle, cabin.

4. the mounting hanger of generator according to claim 3, is characterized in that, described inThe size of angle ɑ is 1～10 °.

5. the mounting hanger of generator according to claim 3, is characterized in that, described inThe first hanger (11) is positioned at the upper one end away from circulus (13) of suspender body (1), described auxiliary hangingEar (15) comprises that two and symmetry are arranged in circulus (13).

6. the mounting hanger of generator according to claim 1, is characterized in that, described inThe first hanger (11), described the second hanger (12) and described auxiliary hanger (15) are suspension ring, shackle, bandThere are the connecting plate of screwed hole or the connecting plate with through hole.

7. the mounting hanger of generator according to claim 1, is characterized in that, described inCirculus (13) is annular or regular polygon circulus.

8. the mounting hanger of generator according to claim 7, is characterized in that, described inAdpting flange (14) is circle or regular polygon flange, and the connecting hole on described adpting flange (14) is notBe less than 20.

9. according to the mounting hanger of the generator described in any one in claim 1～8, its featureBe, also comprise guardrail (2), described guardrail (2) and described suspender body (1) weld or pass through bolt(4) detachable connects.

10. the mounting hanger of generator according to claim 9, is characterized in that, instituteState guardrail (2) and comprise interconnective the first pedal layer (21) and the second pedal layer (22), described secondPedal layer (22) is positioned between described the first pedal layer (21) and described suspender body (1), and described firstPedal layer (21) is corresponding with generator enter hole (33), on described the second pedal layer (22), be provided withThe passage (23) that described the first pedal layer (21) is connected.