CN218325110U

CN218325110U - Wind turbine generator main shaft structure and wind turbine generator

Info

Publication number: CN218325110U
Application number: CN202221940480.6U
Authority: CN
Inventors: 计文博; 乔红; 张振
Original assignee: Cgn Ruyang New Energy Co ltd
Current assignee: Cgn Ruyang New Energy Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-01-17
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a wind turbine generator system main shaft structure and wind turbine generator system, including first main shaft, it passes through the rotatable setting of bearing device in the cabin, first main shaft is located the coaxial second main shaft that is provided with on the other end of cabin inside, the second main shaft is kept away from first main shaft and is served and install in the cabin through bearing device, inlet port one end and mounting groove intercommunication, other end intercommunication set up the distributing pipe on the outer lane outer wall. The utility model discloses a tip at first main shaft is extended and is set up the second main shaft to first main shaft and second main shaft are all installed in the cabin through bearing arrangement, make first main shaft have a plurality of fixed points, and form fixing torque, on the one hand, at the in-process of fan operation, can make the cabin atress balanced, on the other hand, compare in single fixed point, effectively avoided installation position load and stress to concentrate, and then avoided the wearing and tearing and damage at connection position, the life of whole device has been improved.

Description

Wind turbine generator system main shaft structure and wind turbine generator system

Technical Field

The utility model relates to a aerogenerator equipment technical field specifically is a wind turbine generator system main shaft structure and wind turbine generator system.

Background

Chinese patent publication No.: CN201568234U discloses a wind turbine generator system main shaft structure and wind turbine generator system, including the main shaft, wherein, still include: the bearing is sleeved on the main shaft; and the locking mechanism is fixedly arranged on the main shaft and is used for being matched with a frame of an external wind turbine generator to brake the rotation of the main shaft. The main shaft is supported by the bearing, the axial length of the main shaft is shortened, and the locking mechanism is directly and fixedly arranged on the main shaft, so that the main shaft structure of the wind turbine generator set is more compact, and the axial size of the main shaft structure is reduced. However, the above device has the following obvious defects in the use process: through setting up a bearing, although shortened the length of main shaft, because fan blade, wheel hub weight are big for the main shaft is big at the operation in-process load, and the cabin atress is unbalanced, leads to bearing and cabin supporting part load and stress concentration, and wearing and tearing appear and damage extremely easily after long-term the use, have serious potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind turbine generator system main shaft structure and wind turbine generator system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a wind turbine main shaft structure comprises

The first main shaft is rotatably arranged in the engine room through a bearing device, a hub is arranged at one end of the first main shaft, which extends to the outside of the engine room, a plurality of groups of blades are arranged on the periphery of the hub in an annular array mode, a second main shaft is coaxially arranged at the other end, which is positioned in the engine room, of the first main shaft, and one end, which is far away from the first main shaft, of the second main shaft is arranged in the engine room through the bearing device;

wherein: the bearing device comprises an outer ring and an inner ring which are coaxially arranged, the outer ring is arranged on a bearing seat, the bearing seat is fixedly arranged in a cabin, the inner ring is arranged on a first main shaft and a second main shaft, one side of the outer ring, which is opposite to the inner ring, is provided with a corresponding mounting groove, and a rolling shaft is movably arranged in the mounting groove;

the oil inlet hole is formed in the outer ring, one end of the oil inlet hole is communicated with the mounting groove, the other end of the oil inlet hole is communicated with a distribution pipe arranged on the outer wall of the outer ring, the distribution pipe is communicated with one end of the oil inlet pipe, the other end of the oil inlet pipe is communicated with an oil pump, and the oil pump is communicated with an oil tank;

the oil groove is arranged on the side surface of the bearing device and corresponds to a gap on the side surface of the bearing device, one end of the oil groove is fixedly connected with the outer ring, the other end of the oil groove is hermetically connected with the inner ring, the oil groove is communicated with an oil return pipe, and the other end of the oil return pipe is communicated with an oil tank;

the fixed seat is fixedly arranged at the bottom of the machine cabin, a sliding block is movably arranged on the fixed seat, the sliding block is symmetrically arranged relative to a braking piece on the second main shaft, a braking piece corresponding to the braking piece is detachably arranged on the sliding block, the bottom of the sliding block is in transmission connection with a lead screw on the fixed seat, one end of the lead screw is in transmission connection with the output end of a first speed reducer, and the input end of the first speed reducer is in transmission connection with a braking motor; and

and the driving wheel is fixedly arranged on the second main shaft, the driving wheel is in transmission connection with the input end of a second speed reducer inside the engine room, and the output end of the second speed reducer is in transmission connection with a generator.

Preferably, a friction plate is detachably arranged on the side surface of the brake block, which is in contact with the brake block.

Preferably, a plurality of groups of through holes with the functions of chip removal and heat dissipation are formed in the brake sheet.

Preferably, a sealing ring is arranged on the side surface of the oil groove, which is in contact with the inner ring.

Preferably, the first main shaft is provided with a fan blade on one side close to the brake pad.

The application also provides a wind turbine generator, which comprises the wind turbine generator main shaft structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a tip at first main shaft is extended and is set up the second main shaft, and first main shaft and second main shaft all install in the cabin through bearing arrangement, make first main shaft have a plurality of fixed points, and form fixing torque, on the one hand, at the in-process of fan operation, can make the cabin atress balanced, on the other hand, compare in single fixed point, installation site load and stress concentration have effectively been avoided, and then the wearing and tearing and the damage at connection position have been avoided, the service life of whole device has been improved, and simultaneously, through setting up by oil pipe, the oil pump, the lubricating oil circulation system that oil tank and oil groove constitute, make lubricating oil can effectively annotate, and realize circulation recycle.

Drawings

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

FIG. 2 is an enlarged view of the structure of area A in FIG. 1;

fig. 3 is an enlarged schematic view of the structure of region B in fig. 1.

In the figure: the system comprises a cabin 1, a first main shaft 2, a second main shaft 3, a hub 4, blades 5, an outer ring 6, an inner ring 7, a bearing seat 8, a roller 9, an oil inlet hole 10, a distribution pipe 11, an oil inlet pipe 12, an oil pump 13, an oil tank 14, an oil tank 15, an oil return pipe 16, a fixed seat 17, a sliding block 18, a brake block 19, a brake block 20, a screw rod 21, a first speed reducer 22, a brake motor 23, a driving wheel 24, a second speed reducer 25 and a generator 26.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a wind turbine main shaft structure comprises

The first main shaft 2 is rotatably arranged in the engine room 1 through a bearing device, one end of the first main shaft 2, which extends to the outside of the engine room 1, is provided with a hub 4, the periphery of the hub 4 is annularly arrayed with a plurality of groups of blades 5, the other end of the first main shaft 2, which is positioned in the engine room 1, is coaxially provided with a second main shaft 3, one end of the second main shaft 3, which is far away from the first main shaft 2, is arranged in the engine room 1 through the bearing device, the blades 5 rotate under the action of wind force to further link the first main shaft 2 and the second main shaft 3 to rotate, and finally, a generator 26 in the engine room 1 is linked to operate to realize power generation, and simultaneously, in the technical scheme of the application, the second main shaft 3 is arranged at the end part of the first main shaft 2 in an extending mode, and the first main shaft 2 and the second main shaft 3 are both installed in the engine room 1 through the bearing device, so that the first main shaft 2 is provided with a plurality of fixed points and forms fixed torque;

wherein: the bearing device comprises an outer ring 6 and an inner ring 7 which are coaxially arranged, the outer ring 6 is fixedly arranged on a bearing seat 8, the bearing seat 8 is fixedly arranged in the cabin 1 through bolts, the inner ring 7 is arranged on the first main shaft 2 and the second main shaft 3, one side of the outer ring 6, which is opposite to the inner ring 7, is provided with a corresponding mounting groove, a roller 9 is movably arranged in the mounting groove, and the whole bearing device has good precision and is not easy to shake in the rotating process through the mounting groove and the roller 9;

the oil inlet hole 10 is formed in the outer ring 6, one end of the oil inlet hole 10 is communicated with the mounting groove, the other end of the oil inlet hole is communicated with a distribution pipe 11 arranged on the outer wall of the outer ring 6, the distribution pipe 11 is communicated with one end of an oil inlet pipe 12, the other end of the oil inlet pipe 12 is communicated with an oil pump 13, and the oil pump 13 is communicated with an oil tank 14;

the oil groove 15 is arranged on the side surface of the bearing device and corresponds to a gap on the side surface of the bearing device, one end of the oil groove 15 is fixedly connected with the outer ring 6, the other end of the oil groove 15 is hermetically connected with the inner ring 7, a sealing ring is arranged on the side surface of the oil groove 15, which is in contact with the inner ring 7, the oil groove 15 is arranged to effectively avoid the leakage of lubricating oil, the environment of the whole cabin 1 is effectively prevented from being polluted by the lubricating oil, the cleanness of the environment of the cabin 1 is ensured, the oil groove 15 is communicated with the oil return pipe 16, and the other end of the oil return pipe 16 is communicated with the oil tank 14; lubricating oil is deposited in oil tank 14, under the effect of oil pump 13, passes through oil inlet pipe 12, distributing pipe 11, inlet port 10 in proper order and enters into the mounting groove that outer lane 6 and inner circle 7 were seted up, realizes lubricating outer lane 6, inner circle 7 and roller bearing 9 to from returning oil pipe 16 backward flow to oil tank 14, the advantage that sets up like this lies in: on one hand, the lubricating oil is timely filled through the remote control oil pump 13, and recycling and cyclic utilization are realized, and on the other hand, after the lubricating system is used for a long time, the lubricating system can be effectively and conveniently cleaned through filling cleaning liquid;

the fixed seat 17 is fixedly arranged at the bottom of the cabin 1 through bolts, a sliding block 18 is movably arranged on the fixed seat 17, the sliding block 18 is symmetrically arranged relative to a braking piece 20 on the second main shaft 3, the braking piece 20 is fixedly arranged on the second main shaft 3 and synchronously rotates with the second main shaft 3, fan blades are arranged on one side, close to the braking piece 20, of the first main shaft 2, and the first main shaft 2 is linked with the fan blades to rotate in the rotating process, so that the air blowing and heat dissipation of the whole cabin 1 are realized, particularly the braking piece 20 is cooled, and the over-high temperature of the braking piece 20 caused in the braking process is avoided; the slide block 18 is detachably provided with a brake block 19 corresponding to the brake block 20, and the detachably arranged brake block 19 is convenient to replace after long-term use; the friction plate is detachably arranged on the side face, which is in contact with the brake block 19, of the brake block 20, a plurality of groups of through holes with the functions of chip removal and heat dissipation are formed in the brake block 20, the bottom of the sliding block 18 is in transmission connection with a screw rod 21 on the fixed seat 17, one end of the screw rod 21 is in transmission connection with the output end of a first speed reducer 22, the input end of the first speed reducer 22 is in transmission connection with a brake motor 23, and the first speed reducer 22 can increase the torque of the brake motor 23; the brake motor 23 drives the first speed reducer 22 to rotate, and the linkage screw rod 21 rotates, so that the sliding blocks 18 and the brake blocks 19 on the two sides can be synchronously close to or far away from the brake block 20, and the first spindle 2 and the second spindle 3 are braked and unlocked; and

and the driving wheel 24 is fixedly arranged on the second main shaft 3, the driving wheel 24 is in transmission connection with the input end of a second speed reducer 25 in the nacelle 1, and the output end of the second speed reducer 25 is in transmission connection with a generator 26.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wind turbine generator system main shaft structure which characterized in that: comprises that

The first main shaft (2) is rotatably arranged in the engine room (1) through a bearing device, a hub (4) is arranged at one end, extending to the outside of the engine room (1), of the first main shaft (2), a plurality of groups of blades (5) are annularly arrayed around the hub (4), a second main shaft (3) is coaxially arranged at the other end, located inside the engine room (1), of the first main shaft (2), and one end, far away from the first main shaft (2), of the second main shaft (3) is installed in the engine room (1) through the bearing device;

wherein: the bearing device comprises an outer ring (6) and an inner ring (7) which are coaxially arranged, the outer ring (6) is arranged on a bearing seat (8), the bearing seat (8) is fixedly arranged in the cabin (1), the inner ring (7) is arranged on the first main shaft (2) and the second main shaft (3), one side of the outer ring (6) opposite to the inner ring (7) is provided with a corresponding mounting groove, and a rolling shaft (9) is movably arranged in the mounting groove;

the oil inlet hole (10) is formed in the outer ring (6), one end of the oil inlet hole (10) is communicated with the mounting groove, the other end of the oil inlet hole is communicated with a distribution pipe (11) arranged on the outer wall of the outer ring (6), the distribution pipe (11) is communicated with one end of an oil inlet pipe (12), the other end of the oil inlet pipe (12) is communicated with an oil pump (13), and the oil pump (13) is communicated with an oil tank (14);

the oil groove (15) is arranged on the side face of the bearing device and corresponds to a gap on the side face of the bearing device, one end of the oil groove (15) is fixedly connected with the outer ring (6), the other end of the oil groove is hermetically connected with the inner ring (7), the oil groove (15) is communicated with an oil return pipe (16), and the other end of the oil return pipe (16) is communicated with an oil tank (14);

the fixed seat (17) is fixedly arranged at the bottom of the engine room (1), a sliding block (18) is movably arranged on the fixed seat (17), the sliding block (18) is symmetrically arranged relative to a brake block (20) on the second main shaft (3), a brake block (19) corresponding to the brake block (20) is detachably arranged on the sliding block (18), the bottom of the sliding block (18) is in transmission connection with a screw rod (21) on the fixed seat (17), one end of the screw rod (21) is in transmission connection with the output end of a first speed reducer (22), and the input end of the first speed reducer (22) is in transmission connection with a brake motor (23); and

and the driving wheel (24) is fixedly arranged on the second main shaft (3), the driving wheel (24) is in transmission connection with the input end of a second speed reducer (25) in the cabin (1), and the output end of the second speed reducer (25) is in transmission connection with a generator (26).

2. The wind turbine generator main shaft structure according to claim 1, wherein: the side surface of the brake block (20) which is contacted with the brake block (19) is detachably provided with a friction plate.

3. The wind turbine generator main shaft structure according to claim 2, wherein: the brake block (20) is provided with a plurality of groups of through holes with the functions of chip removal and heat dissipation.

4. The wind turbine generator main shaft structure according to claim 1, wherein: and a sealing ring is arranged on the side surface of the oil groove (15) contacted with the inner ring (7).

5. The wind turbine generator main shaft structure according to claim 1, wherein: fan blades are arranged on one side, close to the brake pad (20), of the first main shaft (2).

6. A wind turbine generator system is characterized in that: comprising a wind turbine main shaft structure according to any of claims 1-5.