CN207049303U - A kind of main shaft of generating set - Google Patents
A kind of main shaft of generating set Download PDFInfo
- Publication number
- CN207049303U CN207049303U CN201720854271.2U CN201720854271U CN207049303U CN 207049303 U CN207049303 U CN 207049303U CN 201720854271 U CN201720854271 U CN 201720854271U CN 207049303 U CN207049303 U CN 207049303U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- hole
- flange
- guide
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Wind Motors (AREA)
Abstract
It the utility model is related to a kind of main shaft of generating set, including main shaft, guide, flange, packing ring and bolt；Guide passes through liquid nitrogen cooling treatment technique, has stronger anti-shearing stress performance, and flange is fixed on main shaft, and the moment of torsion of main shaft passes through guide shearing resistance and bolt pretightening transmission；The utility model is connected using the combination of guide and bolt, is not limited by major axis diameter size, and specification, the size and number of guide and bolt are unified, and simple in construction, the type and quantity of required fastener are few, reduce manufacturing cost；And the moment of torsion transmitted is bigger, failure is reduced, substantially increases safety coefficient, dismounting is simple and convenient.
Description
Technical field
It the utility model is related to a kind of main shaft of generating set.
Background technology
The main shaft applied to high-power wind-driven generator group is connected with gear-box at present generally uses shrink disk or flange
Structure.As wind power generating set power is increasing, the moment of torsion that main shaft is delivered to gear-box is increasing.Main shaft and gear-box
Connection is using dish structure is shunk, and with the increase of moment of torsion, shrink disk size and weight are increasing；1.5MW blower fans, shrink disk
Weigh about 1.5 tons；3MW blower fans, shrink disk weigh about 3.5 tons.And main shaft and the length that shrink disk coordinates are longer, safeguard, dismantle, more
The inconvenience of gear changing case, wastes time and energy.
3MW uses flange connection with fan, main shaft with gear-box, and flange weighs about 2 tons, and flange size is smaller, weight
Amount is lighter；Main shaft transmits moment of torsion with pretightning force of the flange by bolt, because moment of torsion is big, it is necessary to bigger specification, greater number of spiral shell
Bolt, but because major axis diameter limits, bolt quantity can not be more, the bolt of major diameter can not be used, so that main shaft can not
Larger transmission moment of torsion is born, safety coefficient is small, up for being further improved.
Utility model content
In view of the above-mentioned state of the art, technical problem to be solved in the utility model is that providing one kind uses pin
Set is connected with the combination of bolt, is not limited by major axis diameter size, and simple in construction, the type and quantity of required fastener are few,
Manufacturing cost is reduced, and the moment of torsion transmitted is bigger, reduces failure, substantially increases safety coefficient, dismounting is simply and easily
The main shaft of generating set.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of main shaft of generating set, including
Main shaft, guide, flange, packing ring and bolt, it is characterised in that the side end face center of the main shaft outwards forms connecting pole,
Multiple pin-and-holes being angularly distributed are offered in the end face outside of the connecting pole, the bottom center of each pin-and-hole opens up
There is a screwed hole；The side end face center of the flange offers circular-shaped, concave cavity, is offered on the bottom surface of the circular-shaped, concave cavity
Multiple through holes being angularly distributed, the quantity of the through hole is identical with the quantity of pin-and-hole, the position of each through hole with it is each
The corresponding cooperation in position of pin-and-hole；The flange is fixed on the connecting pole of main shaft.
Preferably, the quantity of the pin-and-hole 3~6.
Preferably, the connecting pole on the main shaft is inserted in the circular-shaped, concave cavity on flange, and the guide passes through through hole simultaneously
It is inserted into pin-and-hole, the screw bolt passes packing ring and guide are simultaneously screwed into screwed hole.
Compared with prior art, the utility model has the advantage of：It is applied to the master of high-power wind-driven generator group at present
Axle is connected the generally structure using shrink disk or flange with gear-box.As wind power generating set power is increasing, main shaft passes
The moment of torsion for being delivered to gear-box is increasing.Main shaft is connected with gear-box using dish structure is shunk, and with the increase of moment of torsion, is shunk
Disk size and weight are increasing；1.5MW blower fans, shrink disk weigh about 1.5 tons；3MW blower fans, shrink disk weigh about 3.5 tons.It is and main
Axle and the length that shrink disk coordinates are longer, safeguard, dismantle, changing gear-box inconvenience, wasting time and energy.3MW with fan, main shaft with
Gear-box uses flange connection, and flange weighs about 2 tons, and flange size is smaller, lighter in weight；Main shaft is with flange by the pre- of bolt
Clamp force transmits moment of torsion, because moment of torsion is big, it is necessary to bigger specification, greater number of bolt, but because major axis diameter limits, bolt
Quantity can not be more, the bolt of major diameter can not be used, so that main shaft can not bear larger transmission moment of torsion, safety coefficient
It is small；The utility model is connected using the combination of guide and bolt, is not limited by major axis diameter size, the rule of guide and bolt
Lattice, size and number are unified, and simple in construction, the type and quantity of required fastener are few, reduce manufacturing cost；And transmit
Moment of torsion it is bigger, reduce failure, substantially increase safety coefficient, dismounting is simple and convenient.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model.
Embodiment
As shown in figure 1, a kind of main shaft of generating set, including main shaft 1, guide 2, flange 3, packing ring 4 and bolt 5；Main shaft 1
Side end face center outwards form connecting pole 13, four pins being angularly distributed are offered in the end face outside of connecting pole 13
Hole 11, the bottom center of each pin-and-hole 11 offer a screwed hole 12, and the side end face center of flange 3 offers circular recessed
Chamber 31, four through holes being angularly distributed 32, the quantity of through hole 32 and the number of pin-and-hole 11 are offered on the bottom surface of circular-shaped, concave cavity 31
Identical, the position of each through hole 32 cooperation corresponding with the position of each pin-and-hole 11 is measured, during assembling, by the connecting pole on main shaft 1
13 are inserted into the circular-shaped, concave cavity 31 on flange 3, and make it that the position of each through hole 32 is relative with the position of each pin-and-hole 11
The alignment on ground is answered, then through four through holes 32 and is inserted into four guidees 2 in four pin-and-holes 11, guide 2 is cold by liquid nitrogen
But handling process, there is stronger anti-shearing stress performance, finally reuse four bolts 5 and sequentially pass through four packing rings 4 respectively
With four guidees 2 and be screwed into four screwed holes 12, so as to which flange 3 is fixed on the connecting pole 13 of main shaft 1；Main shaft 1
Moment of torsion passes through the shearing resistance of guide 2 and the pretightning force transmission of bolt 5；In use, flange 3 is connected with gear-box, the then rotation of main shaft 1
The pinion rotation in gear-box can be driven.
The main shaft applied to high-power wind-driven generator group is connected with gear-box at present generally uses shrink disk or flange
Structure.As wind power generating set power is increasing, the moment of torsion that main shaft is delivered to gear-box is increasing.Main shaft and gear-box
Connection is using dish structure is shunk, and with the increase of moment of torsion, shrink disk size and weight are increasing；1.5MW blower fans, shrink disk
Weigh about 1.5 tons；3MW blower fans, shrink disk weigh about 3.5 tons.And main shaft and the length that shrink disk coordinates are longer, safeguard, dismantle, more
The inconvenience of gear changing case, wastes time and energy.3MW uses flange connection with fan, main shaft with gear-box, and flange weighs about 2 tons, method
Blue size is smaller, lighter in weight；Main shaft and flange transmit moment of torsion by the pretightning force of bolt, due to moment of torsion it is big, it is necessary to bigger specification,
Greater number of bolt, but because major axis diameter limits, bolt quantity can not be more, can not use the bolt of major diameter, so as to
Prevent main shaft, from bearing larger transmission moment of torsion, safety coefficient is small；The utility model is connected using the combination of guide and bolt,
Do not limited by major axis diameter size, specification, the size and number of guide and bolt are unified, simple in construction, required fastener
Type and quantity it is few, reduce manufacturing cost；And the moment of torsion transmitted is bigger, failure is reduced, substantially increases safety coefficient,
Dismount simple and convenient.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to
The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is replaced on an equal basis
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technical scheme
Spirit and scope.
Claims (3)
1. a kind of main shaft of generating set, including main shaft, guide, flange, packing ring and bolt, it is characterised in that the main shaft
Side end face center outwards forms connecting pole, and multiple pins being angularly distributed are offered in the end face outside of the connecting pole
Hole, the bottom center of each pin-and-hole offer a screwed hole；The side end face center of the flange offers circle
Cavity, multiple through holes being angularly distributed, the quantity of the through hole and the number of pin-and-hole are offered on the bottom surface of the circular-shaped, concave cavity
Measure identical, the position cooperation corresponding with the position of each pin-and-hole of each through hole；The flange is fixed on the connection of main shaft
On post.
A kind of 2. main shaft of generating set according to claim 1, it is characterised in that the quantity of the pin-and-hole 3~6.
A kind of 3. main shaft of generating set according to claim 1, it is characterised in that the connecting pole insertion on the main shaft
In circular-shaped, concave cavity on flange, the guide is through through hole and is inserted into pin-and-hole, the screw bolt passes packing ring and pin
Cover and be screwed into screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854271.2U CN207049303U (en) | 2017-07-14 | 2017-07-14 | A kind of main shaft of generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720854271.2U CN207049303U (en) | 2017-07-14 | 2017-07-14 | A kind of main shaft of generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049303U true CN207049303U (en) | 2018-02-27 |
Family
ID=61496249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720854271.2U Active CN207049303U (en) | 2017-07-14 | 2017-07-14 | A kind of main shaft of generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207049303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714972A (en) * | 2019-12-03 | 2020-01-21 | 重庆望江工业有限公司 | Connecting structure of main shaft of wind driven generator and planet carrier of wind power gear box |
| CN113958620A (en) * | 2021-10-14 | 2022-01-21 | 三一重能股份有限公司 | Wind turbine generator and transmission system thereof |
-
2017
- 2017-07-14 CN CN201720854271.2U patent/CN207049303U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714972A (en) * | 2019-12-03 | 2020-01-21 | 重庆望江工业有限公司 | Connecting structure of main shaft of wind driven generator and planet carrier of wind power gear box |
| CN113958620A (en) * | 2021-10-14 | 2022-01-21 | 三一重能股份有限公司 | Wind turbine generator and transmission system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5763292B2 (en) | Slewing bearing | |
| CN207049303U (en) | A kind of main shaft of generating set | |
| CN205952226U (en) | Slewing mechanism and bicycle | |
| CN212454708U (en) | Single-bearing transmission system connecting structure of wind generating set | |
| CN110080953B (en) | Wind power generation plant | |
| WO2011084826A4 (en) | Torque limiting coupling for wind turbine | |
| EP3390810B1 (en) | Joint for connecting a wind turbine rotor blade to a rotor hub and associated method | |
| CN201679657U (en) | Equal-strength wind-power locking disc | |
| CN204283755U (en) | A kind of wind-driven generator and blower fan main shaft thereof | |
| CN203272625U (en) | Step-up gear box of wind driven generator | |
| US10989250B2 (en) | Coupling assembly and wind turbine comprising such assembly | |
| CN205714591U (en) | A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon | |
| CN105927375B (en) | A kind of engine and generator coupling process | |
| CN106640531A (en) | Megawatt-grade draught fan with direct drive structure | |
| US20220252048A1 (en) | Wind turbine main shaft assembly | |
| CN214643320U (en) | Draw shaft coupling frock | |
| CN210510000U (en) | Planet carrier and main shaft locking structure | |
| CN207131734U (en) | A kind of pitch variable bearings of Wind turbines and the pitch-controlled system comprising the pitch variable bearings | |
| CN206903936U (en) | A kind of impeller fixed structure of centrifugal compressor | |
| CN204477107U (en) | Big torque clutch | |
| CN217762020U (en) | Full-retreating type large-megawatt wind power gear box | |
| CN219729085U (en) | Wind-driven generator hubcap transportation support | |
| CN214063724U (en) | Offshore wind power gear box connecting structure | |
| US10502264B1 (en) | Ball plug retention for slewing ring bearing | |
| CN203272758U (en) | Contraction disc in wind driven generator gear case |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 210038 room 514, science and technology base, 12 Hengguang Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Wind Power Technology Co., Ltd. Address before: 211100 intersection of dry road and Yongning Road, Jiangning District, Nanjing, Jiangsu Patentee before: Nanjing Wind Power Technology Co., Ltd. |