CN210859058U

CN210859058U - A change device for aerogenerator gear box

Info

Publication number: CN210859058U
Application number: CN201922123919.0U
Authority: CN
Inventors: 李�荣; 赵红露; 刘世江; 蔡林洹; 谢丹; 杨志; 姜鸿帅; 刘润龙
Original assignee: Hebei Suntien New Energy Technology Co Ltd
Current assignee: Hebei Suntien New Energy Technology Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-06-26
Anticipated expiration: 2029-12-02

Abstract

The utility model provides a change device for aerogenerator gear box, including two unable adjustment bases, unable adjustment base upper surface installs the mounting bracket, be provided with the main shaft between two mounting brackets and press the frock, the main shaft is pressed the frock and is contained a plurality of main shaft preforming, and first fixed orifices has all been seted up at every main shaft preforming both ends, fixed surface is provided with two and prescribes a limit to the ear on the mounting bracket, it all corresponds on the ear surface and has seted up the second fixed orifices to prescribe a limit to the ear, the both ends of main shaft preforming set up respectively between two prescribe a limit to the ear, and the position of first fixed orifices and second fixed orifices is corresponding and fix through. The utility model overcomes prior art's is not enough, through being divided into a plurality of main shaft preforming with main shaft pressure frock to the device of being convenient for does not need large-scale equipment of lifting by crane, the artifical transport of being convenient for, convenient and fast from transporting between the ground to the aerogenerator cabin.

Description

A change device for aerogenerator gear box

Technical Field

The utility model relates to an aerial change technical field, concretely relates to change device for aerogenerator gear box.

Background

The gear box is damaged due to various reasons in the running and using process of the wind turbine generator, and the gear box needs to be replaced in time in order to reduce the loss of the generated energy of the wind power plant after being damaged. For a wind power generator with a single main bearing, a method for replacing a gear box is to disassemble and hoist a fan blade and a hub to the ground, then disassemble a connecting coupling between the generator and the gear box, disassemble and hoist the gear box and a main shaft to the ground for separation, and replace the gear box with a new gear box.

At present, for the gear box replacement of the wind driven generator with a single main bearing, some other methods also exist, for example, a main shaft pressing device is used for mounting before the gear box is replaced, so that the main shaft is fixedly connected with a base bed plate of a cabin of the wind driven generator, then the connection between the main shaft and the gear box (for example, expansion sleeve or flange bolt connection) is disassembled, a coupler between the generator and the gear box is disassembled, and then the gear box is disassembled from the cabin and is hung to the ground. The means for securing the main shaft, however, typically have a weight of 1-2 tons, requiring a ground crane to transport the equipment to the nacelle of a wind turbine several tens of meters high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a change device for aerogenerator gear box has overcome the not enough of prior art, reasonable in design through pressing the frock with the main shaft and be divided into a plurality of main shaft preforming to be convenient for change device from ground to transporting between the aerogenerator cabin, do not need large-scale equipment of lifting by crane, convenient and fast.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a change device for aerogenerator gear box, includes two unable adjustment bases, unable adjustment base upper surface fixed mounting has the mounting bracket, two be provided with main shaft pressure frock between the mounting bracket, main shaft pressure frock contains a plurality of main shaft preforming, and first fixed orifices has all been seted up at every main shaft preforming both ends, fixed surface is provided with two and prescribes a limit to the ear on the mounting bracket, prescribe a limit to the ear surface and all correspond and seted up the second fixed orifices, the both ends of main shaft preforming set up respectively between two prescribe a limit to the ear, just first fixed orifices with the position of second fixed orifices is corresponding and fixes through the fixed pin.

Preferably, the fixed base is of a U-shaped structure and is clamped on the bottom plate of the engine room through a U-shaped groove.

Preferably, threaded holes are formed in the two ends of the mounting frame and the upper surface of the fixing base, a fixing bolt is connected between the threaded holes in a threaded mode, a locking nut is connected to the upper end of the fixing bolt in a threaded mode, and the locking nut is located on the upper surface of the mounting frame.

Preferably, the position that mounting bracket upper surface is located between two limited ears is provided with the guide block, the screens hole has all been seted up to main shaft pressure frock both ends lower surface, screens hole and guide block phase-match.

Preferably, both side surfaces of the guide block are provided with inclined surfaces.

Preferably, each main shaft pressing piece surface is provided with a locking hole at a corresponding position, a locking rod is movably connected in the locking hole, locking pieces are sleeved on the outer surfaces of the two ends of the locking rod, the locking pieces are in contact with the surface of the main shaft pressing piece on the outermost side, and locking nuts are in threaded connection with the two ends of the locking rod.

Preferably, the middle of the main shaft pressing tool is of an arc structure and is matched with the outer surface of a main shaft of the gear box.

Preferably, a supporting frame is arranged in the middle of the main shaft pressing tool, the supporting frame comprises an upper fixing plate and a lower fixing plate, the upper fixing plate and the lower fixing plate are respectively positioned on the upper surface and the lower surface in the middle of the main shaft pressing tool, the upper surface of the lower fixing plate is fixedly connected with one end of a screw rod, and the other end of the screw rod penetrates through the upper fixing plate and is connected with a fixing nut through threads; the gear box is characterized in that through holes are formed in two sides of the lower fixing plate, adjusting screws are arranged in the through holes, adjusting nuts are connected to the outer surfaces of the upper ends of the adjusting screws in a threaded mode, the lower ends of the adjusting screws penetrate through the through holes and are fixedly connected with supporting claws, and the supporting claws are matched with the outer surface of a main shaft of the gear box.

The utility model provides a change device for aerogenerator gear box. The method has the following beneficial effects: the main shaft pressing tool is divided into the plurality of main shaft pressing sheets, so that the device is convenient to convey from the ground to the wind driven generator, large-scale hoisting equipment is not needed, and convenience and rapidness are realized; through guide block and screens hole assorted action, what make the both ends of main shaft preforming can be better guides orientation to guarantee that the first fixed orifices at every main shaft preforming both ends can correspond with the second fixed orifices of injecing the ear surface, and through establishing guide block both sides face into the inclined plane, thereby when the installation, also can play the guide effect to the screens hole at main shaft preforming both ends.

Drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an exploded view of the present invention;

FIG. 3 is a schematic view of the structure of the present invention in use;

fig. 4 is a schematic structural diagram of a fifth embodiment of the present invention;

the reference numbers in the figures illustrate:

1. a fixed base; 2. a mounting frame; 3. pressing a main shaft; 4. pressing a main shaft; 5. a first fixing hole; 6. a defining ear; 7. a second fixing hole; 8. a fixing pin; 9. fixing the bolt; 10. locking the nut; 11. a guide block; 12. a position clamping hole; 13. a locking lever; 14. a locking piece; 15. an upper fixing plate; 16. a lower fixing plate; 17. a screw; 18. adjusting the screw rod; 19. adjusting the nut; 20. supporting claws; 21. a cabin floor; 22. a main shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.

Embodiment one, as shown in fig. 1 to 3, a replacing device for a gearbox of a wind driven generator, includes two fixing bases 1, fixing base 1 is a U-shaped structure, fixing base 1 is clamped on a nacelle baseplate 21 through a U-shaped groove, a mounting frame 2 is fixedly mounted on fixing base 1, a spindle pressing tool 3 is arranged between two mounting frames 2, spindle pressing tool 3 includes a plurality of spindle pressing sheets 4, first fixing holes 5 are respectively arranged at two ends of each spindle pressing sheet 4, two limiting lugs 6 are fixedly arranged on mounting frame 2, second fixing holes 7 are respectively arranged on surfaces of limiting lugs 6, two ends of each spindle pressing sheet 4 are respectively arranged between two limiting lugs 6, and positions of first fixing holes 5 and second fixing holes 7 are corresponding and fixed through fixing pins 8.

Before use, the fixed base 1, the mounting rack 2 and the plurality of main shaft pressing sheets 4 are respectively conveyed into a cabin of an aerial wind driven generator, the main shaft pressing tool 3 is divided into a plurality of main shaft pressing sheets 4, thereby facilitating the air conveying operation of the device, when in installation, the two fixed bases 1 are respectively fixed on the cabin bottom plates 21 at the two sides of the main shaft 22, the mounting rack 2 is fixed on the upper surface of the fixed base 1, the plurality of main shaft pressing sheets 4 are arranged between the two mounting racks 2, the two ends of the main shaft pressing sheet 4 are respectively positioned between the limiting lugs 6 above the two mounting frames 2, and then are inserted into the first fixing hole 5 and the second fixing hole 7 through the fixing pin 8, therefore, a plurality of spindle pressing sheets 4 can be positioned and fixed, and the positions of two ends of the fixing pin 8, which are jointed with the outer surface of the limiting lug 6, can be provided with insertion holes for inserting limit pins to prevent the fixing pin 8 from falling off; after using, extract the spacer pin, take out fixed pin 8 again, can take off a plurality of main shaft preforming 4 and transport ground respectively, convenient and fast to need not large-scale equipment of lifting by crane can accomplish and transport.

In this embodiment, the middle of the main shaft pressing tool 3 is of an arc structure and is matched with the outer surface of the main shaft 22, so that when the main shaft pressing tool is used, the main shaft 22 is supported by the arc structure in the middle of the main shaft pressing tool 3, and the gear box can be detached.

Embodiment two, based on the further improvement to embodiment one, threaded hole has all been seted up at the both ends of mounting bracket 2 and unable adjustment base 1 upper surface, and threaded connection has fixing bolt 9 between the threaded hole, and fixing bolt 9 upper end threaded connection has lock nut 10, and lock nut 10 is located mounting bracket 2 upper surface. Through fixing bolt 9 lower extreme and the effect of unable adjustment base 1 threaded connection, can make unable adjustment base 1 and cabin bottom plate 21 fixed firm, lock nut 10 of rethread fixing bolt 9 upper end can be with the firm connection of mounting bracket 2 at unable adjustment base 1 upper surface.

Third, based on the further improvement to first embodiment, the position that the upper surface of mounting bracket 2 is located between two limit ears 6 is provided with guide block 11, and the lower surface of main shaft pressing tool 3 both ends has all been seted up screens hole 12, screens hole 12 and guide block 11 phase-match. Therefore, when two ends of the main shaft pressing piece 4 are placed between the limiting lugs 6, the two ends of the main shaft pressing piece 4 can be better guided and positioned through the matching effect of the guide block 11 and the clamping holes 12, the first fixing holes 5 at the two ends of each main shaft pressing piece 4 can be ensured to correspond to the second fixing holes 7 on the surfaces of the limiting lugs 6, and two side faces of the guide block 11 are arranged to be inclined faces, so that the clamping holes 12 at the two ends of the main shaft pressing piece 4 can also play a guiding role in installation.

The fourth embodiment, based on the further improvement of the first embodiment, six locking holes are formed in the corresponding positions on the surface of each main shaft pressing piece 4 in the first embodiment, a locking rod 13 is movably connected in each locking hole, locking pieces 14 are sleeved on the outer surfaces of the two ends of each locking rod 13, the locking pieces 14 are in contact with the surface of the main shaft pressing piece 4 on the outermost side, and nuts are connected to the two ends of each locking rod 13 through threads. Thereby after fixing the main shaft preforming 4 both ends position, insert six locking lever 13 respectively in 6 locking holes to sheathe stay 14 in every locking lever 13 both ends, the rethread nut is locked, in order to guarantee to merge as an organic whole between a plurality of main shaft preforming 4.

In the fifth embodiment, as shown in fig. 4, in the present embodiment, the middle of the main shaft pressing tool 3 is set to be a planar structure, and a support frame is arranged in the middle of the main shaft pressing tool 3, the support frame includes an upper fixing plate 15 and a lower fixing plate 16, the upper fixing plate 15 and the lower fixing plate 16 are respectively located on the upper surface and the lower surface of the middle of the main shaft pressing tool 3, the upper surface of the lower fixing plate 16 is fixedly connected with one end of a screw 17, and the other end of the screw 17 penetrates through the upper fixing plate 15 and is connected with a fixing nut through a thread; through holes are formed in two sides of the lower fixing plate 16, adjusting screws 18 are arranged in the through holes, adjusting nuts 19 are connected to the outer surfaces of the upper ends of the adjusting screws 18 in a threaded mode, the lower ends of the adjusting screws 18 penetrate through the through holes and are fixedly connected with supporting claws 20, and the supporting claws 20 are matched with the outer surface of a main shaft 22.

Therefore, when the gear box main shaft pressing tool is used, the upper fixing plate 15 and the lower fixing plate 16 are firstly installed on the upper surface and the lower surface in the middle of the main shaft pressing tool 3 respectively and are fixed through the screw rod 17 and the fixing nut, then when the main shafts 22 with different sizes are supported, the position of the adjusting screw rod 18 in the vertical direction is adjusted by rotating the adjusting nut 19, and then the supporting claw 20 can be supported on the outer surface of the main shaft 22 of the gear box, so that the gear box main shaft pressing tool can adapt to the main shafts 22 with different diameters.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A replacement device for a gearbox of a wind turbine comprises two fixed bases (1), and is characterized in that: fixed surface installs mounting bracket (2) on unable adjustment base (1), two be provided with main shaft press tool (3) between mounting bracket (2), main shaft press tool (3) contain a plurality of main shaft preforming (4), and first fixed orifices (5) have all been seted up at every main shaft preforming (4) both ends, fixed surface is provided with two and prescribes a limit to ear (6) on mounting bracket (2), prescribe a limit to ear (6) surface and all correspond and seted up second fixed orifices (7), the both ends of main shaft preforming (4) set up respectively between two prescribe a limit to ear (6), just first fixed orifices (5) with the position of second fixed orifices (7) is corresponding and fix through fixed pin (8).

2. A replacing device for a gearbox of a wind turbine according to claim 1, characterized in that: the fixing base (1) is of a U-shaped structure, and the fixing base (1) is clamped on the bottom plate (21) of the engine room through a U-shaped groove.

3. A replacement device for a gearbox of a wind turbine according to claim 2, characterised in that: threaded holes are formed in the two ends of the mounting frame (2) and the upper surface of the fixing base (1), a fixing bolt (9) is connected between the threaded holes in a threaded mode, a locking nut (10) is connected to the upper end of the fixing bolt (9) in a threaded mode, and the locking nut (10) is located on the upper surface of the mounting frame (2).

4. A replacing device for a gearbox of a wind turbine according to claim 1, characterized in that: the position that mounting bracket (2) upper surface is located between two limited ears (6) is provided with guide block (11), screens hole (12) have all been seted up to main shaft pressure frock (3) both ends lower surface, screens hole (12) and guide block (11) phase-match.

5. A replacing device for a gearbox of a wind turbine according to claim 4, characterized in that: two side surfaces of the guide block (11) are provided with inclined surfaces.

6. A replacing device for a gearbox of a wind turbine according to claim 1, characterized in that: every main shaft preforming (4) surface has all seted up the locking hole in corresponding the position, the downthehole swing joint of locking has check lock lever (13), check lock lever (13) both ends surface has all cup jointed stay (14), stay (14) contact with main shaft preforming (4) surface in the outside, just check lock lever (13) both ends threaded connection has the nut.

7. A replacing device for a gearbox of a wind turbine according to claim 1, characterized in that: the middle of the main shaft pressing tool (3) is of an arc structure and is matched with the outer surface of the main shaft (22).

8. A replacing device for a gearbox of a wind turbine according to claim 1, characterized in that: the main shaft pressing tool is characterized in that a supporting frame is arranged in the middle of the main shaft pressing tool (3), the supporting frame comprises an upper fixing plate (15) and a lower fixing plate (16), the upper fixing plate (15) and the lower fixing plate (16) are respectively positioned on the upper surface and the lower surface of the middle of the main shaft pressing tool (3), the upper surface of the lower fixing plate (16) is fixedly connected with one end of a screw rod (17), and the other end of the screw rod (17) penetrates through the upper fixing plate (15) and is connected with a fixing nut through threads; the through-hole has all been seted up to the both sides of bottom plate (16), be provided with adjusting screw (18) in the through-hole, the upper end surface threaded connection of adjusting screw (18) has adjusting nut (19), the lower extreme of adjusting screw (18) passes through-hole fixedly connected with and supports claw (20), support the surface phase-match of claw (20) and main shaft (22).