CN114623047A - Bearing load transfer device controlled in electric mode - Google Patents
Bearing load transfer device controlled in electric mode Download PDFInfo
- Publication number
- CN114623047A CN114623047A CN202210289287.9A CN202210289287A CN114623047A CN 114623047 A CN114623047 A CN 114623047A CN 202210289287 A CN202210289287 A CN 202210289287A CN 114623047 A CN114623047 A CN 114623047A
- Authority
- CN
- China
- Prior art keywords
- bearing
- pressure ring
- ring
- transfer device
- load transfer
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to the field of wind generating sets, in particular to a bearing load transfer device controlled in an electric mode, which comprises a sliding semi-ring, wherein the sliding semi-ring is arranged on the side surface of a bearing locking nut, which is far away from a bearing, and a plurality of sliding bearings are arranged between the sliding semi-ring and an unloading end cover; a spring mounting seat is arranged at one end of the sliding bearing, which is far away from the bearing locking nut; a plurality of spring groups are arranged on the circumference of the spring mounting seat; the pressure ring is arranged on one side of the spring group, which is far away from the spring mounting seat, and wedge-shaped blocks are arranged on two radial sides of one side of the pressure ring, which is close to the spring group; one side of the pressure ring, which is far away from the spring group, is provided with a driven gear; and the driving motors are arranged on two radial sides of the unloading end cover, and drive the driven gear to rotate through the driving gear, so that the pressure ring is driven to rotate, and the wedge block applies pressure to the spring group. The driving motor drives the pressure ring to rotate, the pressure ring has two limit positions in total, one is a working position, namely pressing, and the other is a releasing position.
Description
Technical Field
The invention relates to the field of wind generating sets, in particular to a bearing load transfer device controlled in an electric mode, which is mainly applied to the technical transformation of a wind generating set which takes a double-aligning roller bearing as a main shaft bearing.
Background
The wind turbine generator with the double-aligning roller bearing as the main shaft bearing layout operates in a wind power plant for about 10 years, the phenomenon that the whole wind turbine generator transmission chain moves backwards due to the fact that a large amount of abrasion of a rear bearing occurs continuously, when the abrasion loss is large, the backward movement of the wind turbine generator transmission chain can reach about 15mm, at the moment, a wind wheel almost or already collides with an engine room, the wind turbine generator cannot continue to operate any more, the existing industry solves the problem that a main shaft system is hoisted to be arranged on a lower tower to replace the main shaft bearing, then the main shaft system is hoisted to be arranged on the upper tower again, the cost of replacing a new bearing and the cost of replacing the lower tower of a single fan main shaft system in the solving process are expensive, and the economic benefit of the wind power plant is seriously influenced.
Disclosure of Invention
In order to solve the problem that the wind turbine generator set transmission chain in the prior art generates backward movement phenomenon and large abrasion loss, the application provides a bearing load transfer device controlled in an electric mode, and axial load of a wind turbine generator set is transferred to a front bearing seat to a main frame, so that abrasion of a rear bearing is reduced.
The technical scheme adopted by the application is as follows: a bearing load transfer device controlled in an electric mode comprises a sliding semi-ring, wherein the sliding semi-ring is fixed on the side surface, away from a bearing, of a bearing locking nut, and a plurality of sliding bearings are arranged between the sliding semi-ring and an unloading end cover;
a spring mounting seat is arranged at one end of the sliding bearing, which is far away from the bearing locking nut;
a plurality of spring groups are arranged on the circumference of the spring mounting seat;
the pressure ring is arranged on one side of the spring group, which is far away from the spring mounting seat, and wedge-shaped blocks are arranged on two radial sides of one side of the pressure ring, which is close to the spring group;
one side of the pressure ring, which is far away from the spring group, is provided with a driven gear;
and the driving motors are arranged on two radial sides of the unloading end cover, and drive the driven gear to rotate through the driving gear, so that the pressure ring is driven to rotate, and the wedge block applies pressure to the spring group.
Further, the height of the wedge-shaped blocks is gradually reduced along the circumferential direction of the pressure ring.
Further, the spring group is a butterfly spring group.
Furthermore, at least one pressure sensor is arranged between the pressure ring and the unloading end cover.
Furthermore, the unloading end cover is in a round table shape and gradually shrinks outwards from the bearing seat.
Further, the unloading end cover is fixed on the bearing seat through a bolt.
Furthermore, the diameter of the driven gear is smaller than that of the pressure ring, and the driving gear axially limits the pressure ring.
Further, the sliding half ring is fixed on the side face, far away from the bearing, of the bearing locking nut through a bolt.
The invention has the advantages that: the two driving motors drive the driving gear, the pressure ring is driven to rotate through transmission, the pressure ring has two limit positions in total, one is a working position and is applied with pressure, the other is a release position, when the main shaft of the fan unit rotates reversely and stops, the pressure ring is in the release position, when the main shaft of the wind turbine unit rotates normally, the pressure ring is in the working position and is applied with pressure, at the moment, when the butterfly spring group is compressed and stressed at the same time, the axial force of the outer ring of the front bearing of the main shaft is transmitted to the bearing seat through the unloading end cover, the axial force borne by the rear bearing of the wind turbine unit is effectively reduced, the reduced magnitude is the magnitude of transmitted load, the stress of the rear bearing is reduced, the abrasion of the rear bearing caused by overlarge axial load is effectively relieved, and when the rear bearing is not abraded any more, the main shaft transmission chain of the wind turbine unit does not move backwards any more.
Drawings
FIG. 1 is a schematic structural view of an electrically controlled bearing load transfer device of the present invention;
FIG. 2 is an enlarged fragmentary view of the electrically controlled bearing load transfer device of the present invention;
FIG. 3 is a schematic view of the pressure ring installation of the present invention;
FIG. 4 is a side view of a pressure ring of the present invention;
wherein: 1-a pressure ring; 101-a wedge block; 2-a spring set; 3-a pressure sensor; 4-spring mounting seat; 5-a plain bearing; 6-sliding half ring; 7-driving a motor; 8-bearing lock nut; 9-unloading end cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present embodiment provides an electric form controlled bearing load transfer device, which is integrally installed at the rear end of the front bearing of a wind turbine generator, and comprises a sliding half ring 6, wherein the sliding half ring 6 is fixed on the side of a bearing lock nut 8 far away from the bearing by using a bolt (M10x35), and a plurality of sliding bearings 5 are arranged between the sliding half ring 6 and an unloading end cover 9; the unloading end cover 9 is in a shape of a circular truncated cone and gradually closes from the bearing seat outwards, the unloading end cover 9 is fixed at the rear end of a front bearing seat of the wind turbine generator by using 10 bolts (M16x70), and when a main shaft of the wind turbine generator rotates, the unloading end cover 9 is fixed on the bearing seat and does not rotate;
a spring mounting seat 4 is arranged at one end, far away from a bearing locking nut 8, of the sliding bearing 5, a plurality of spring groups 2 are arranged on the circumference of the spring mounting seat 4, and the sliding bearing 5 and the spring mounting seat 4 rotate along with the main shaft;
the pressure ring 1 is arranged on one side, far away from the spring mounting seat 4, of the spring group 2, and wedge blocks 101 are arranged on two radial sides of one side, close to the spring group 2, of the pressure ring 1;
a driven gear is arranged on one side of the pressure ring 1, which is far away from the spring group 2;
the two driving motors 7 are arranged on two radial sides of the unloading end cover 9 and do not rotate along with the main shaft, and the two driving motors 7 drive the speed reducer to drive the driven gear to rotate by using the driving gear, so that the pressure ring 1 is driven to rotate, and the wedge block 101 applies pressure to the spring group 2.
The driving gear and the driven gear are in a common transmission mode, and the figures of partial gears are omitted, so that the understanding of technical schemes of technical personnel is not influenced.
Further, the height of the wedge block 101 is gradually reduced along the circumferential direction of the pressure ring 1, the pressure ring 1 has two limit positions in total, one limit position is a working position, namely, the pressure ring 1 applies pressure, namely, the pressure ring 1 rotates to drive the wedge block 101 to apply pressure to the spring group 2; one is a release position, when the main shaft of the fan unit rotates reversely and is in a stop state, the pressure ring 1 rotates reversely, the wedge block 101 does not press the spring unit 2 and is in the release position, and when the main shaft of the wind turbine unit rotates normally, the pressure ring 1 is in a working position, namely a pressing position. With the change of the rotation angle of the pressure ring 1, the depth of the wedge block 101 for compressing the spring set 2 changes, the compression amount of the spring is different, and the unloading force is different.
Further, the spring group 2 is a butterfly spring group, and the number of the butterfly spring groups is determined by the size of the axial load needing to be transmitted.
Further, at least one pressure sensor 3 is arranged between the pressure ring 1 and the unloading end cover 9, and the pressure sensor 3 is used for detecting pressure data and is used as a signal source for controlling the opening and closing of the driving motor 7.
Furthermore, the diameter of the driven gear is smaller than that of the pressure ring 1, the driving gear axially limits the pressure ring 1, waist holes can be formed in two radial sides of the pressure ring 1, and limiting is carried out through limiting bolts.
The working principle is as follows:
the driving motor is arranged on the unloading end cover, an output shaft of the driving motor is connected with a driving gear, two driven gears are arranged on the plane opposite to the wedge-shaped block of the pressure disc in the symmetrical direction, so that the driving gear is meshed with the driven gears, the driving gear is driven to rotate when a motor shaft rotates, the driven gears rotate to drive the pressure disc to rotate at the moment, and the rotation angle of the pressure disc is controlled by controlling the rotation speed of the motor; when the main shaft of the wind turbine generator normally rotates, the driving motor is started, the driving gear is meshed with the driven gear, the pressure ring is driven to rotate to a pressure applying working position, the pressure ring structure is provided with a wedge block, when the wedge block rotates to the position of the belleville spring set, the belleville spring is compressed and stressed, the axial force of the outer ring of the front bearing of the main shaft is transmitted to the bearing seat through the unloading end cover, the axial force borne by the rear bearing of the wind turbine generator is effectively reduced, the reduced axial force is the size of the transmitted load, the stress of the rear bearing is reduced, the abrasion of the rear bearing caused by the overlarge axial load is effectively relieved, and when the rear bearing is not abraded any more, the main shaft transmission chain of the wind turbine generator does not move backwards any more.
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 (8)
1. An electrically form controlled bearing load transfer device, characterized by: the unloading device comprises a sliding semi-ring (6), wherein the sliding semi-ring (6) is fixed on the side surface of a bearing locking nut (8) far away from a bearing, and a plurality of sliding bearings are arranged between the sliding semi-ring (6) and an unloading end cover (9);
a spring mounting seat (4) is arranged at one end of the sliding bearing (5) far away from the bearing locking nut (8);
a plurality of spring groups (2) are arranged on the circumference of the spring mounting seat (4);
the pressure ring (1) is arranged on one side, far away from the spring mounting seat (4), of the spring group (2), and wedge-shaped blocks (101) are arranged on two radial sides of one side, close to the spring group (2), of the pressure ring (1); a driven gear is arranged on one side of the pressure ring (1) far away from the spring group (2);
and the driving motors (7) are arranged on two radial sides of the unloading end cover (9) and drive the driven gears to rotate through the driving gears, so that the pressure ring (1) is driven to rotate, and the wedge-shaped blocks (101) apply pressure to the spring group (2).
2. The electrically form controlled bearing load transfer device of claim 1, wherein: the height of the wedge-shaped block (101) is gradually reduced along the circumferential direction of the pressure ring (1).
3. The electrically form controlled bearing load transfer device of claim 1, wherein: the spring group (2) is a butterfly spring group.
4. The electrically form controlled bearing load transfer device of claim 1, wherein: at least one pressure sensor (3) is arranged between the pressure ring (1) and the unloading end cover (9).
5. The electrically form controlled bearing load transfer device of claim 1, wherein: the unloading end cover (9) is in a circular truncated cone shape and gradually closes up from the bearing seat outwards.
6. The electrically form controlled bearing load transfer device of claim 1, wherein: the unloading end cover (9) is fixed on the bearing seat through a bolt.
7. The electrically form controlled bearing load transfer device of claim 1, wherein: the diameter of the driven gear is smaller than that of the pressure ring (1), and the driving gear axially limits the pressure ring (1).
8. The electrically form controlled bearing load transfer device of claim 1, wherein: the sliding half ring (6) is fixed on the side face, far away from the bearing, of the bearing locking nut (8) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289287.9A CN114623047A (en) | 2022-03-22 | 2022-03-22 | Bearing load transfer device controlled in electric mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289287.9A CN114623047A (en) | 2022-03-22 | 2022-03-22 | Bearing load transfer device controlled in electric mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114623047A true CN114623047A (en) | 2022-06-14 |
Family
ID=81904733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210289287.9A Pending CN114623047A (en) | 2022-03-22 | 2022-03-22 | Bearing load transfer device controlled in electric mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114623047A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235771A (en) * | 2022-09-21 | 2022-10-25 | 苏州开密科智能装备科技有限公司 | Bearing vibration detection equipment |
-
2022
- 2022-03-22 CN CN202210289287.9A patent/CN114623047A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115235771A (en) * | 2022-09-21 | 2022-10-25 | 苏州开密科智能装备科技有限公司 | Bearing vibration detection equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2810016Y (en) | Electric push rod | |
| CN201925109U (en) | Turning gear for high-speed shaft of wind generating set | |
| CN114623047A (en) | Bearing load transfer device controlled in electric mode | |
| CN106545600A (en) | Wind generating set and yaw braking device, braking system and braking method thereof | |
| CA3054974C (en) | Adjustment unit for azimuth adjustment and/or pitch adjustment of a wind turbine, and method | |
| US9458827B2 (en) | Wind turbine rotor and method of assembly thereof | |
| CN101324219B (en) | Yawing mechanism of wind power generator | |
| CN216975129U (en) | Bearing load transfer device controlled in electric mode | |
| CN202715833U (en) | Axial locking mechanism for machine tool spindle | |
| CN106801725A (en) | A kind of mechanical device for realizing the quick rotating of shafting | |
| CN102728859A (en) | Axial locking mechanism of machine tool spindle | |
| WO2015127589A1 (en) | Transmission structure for wind power generator | |
| CN201666343U (en) | Differential used as dynamic coupling device of series parellel hybrid electric vehicle | |
| CN100366949C (en) | Planet differential actuator | |
| CN101020551A (en) | Drag for service elevator | |
| CN107882895B (en) | The motor of large and medium-sized press machine friction clutch combines driving structure with edge cam | |
| WO2014003867A1 (en) | Friction wheel drive train for a wind turbine | |
| CN101900169A (en) | Frictional plate type limit torque coupling | |
| CN113446150B (en) | Pitch system and wind generating set | |
| CN217878620U (en) | Rotary supporting device for cylinder hardness test | |
| CN201475199U (en) | Friction lining limit moment coupling | |
| CN2583293Y (en) | Locking device for vehicle door system | |
| CN218844947U (en) | Disc spring device for preventing main shaft of wind generating set from moving backwards | |
| CN217327568U (en) | Axial unloading device for main bearing of wind turbine generator | |
| CN218335614U (en) | Rotary driving mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |