CN101787905B - Safe extracting device for electric barring gear - Google Patents
Safe extracting device for electric barring gear Download PDFInfo
- Publication number
- CN101787905B CN101787905B CN 201010144666 CN201010144666A CN101787905B CN 101787905 B CN101787905 B CN 101787905B CN 201010144666 CN201010144666 CN 201010144666 CN 201010144666 A CN201010144666 A CN 201010144666A CN 101787905 B CN101787905 B CN 101787905B
- Authority
- CN
- China
- Prior art keywords
- small gear
- gear
- contact
- pinion
- gearwheel
- 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
Images
Landscapes
- Gear Transmission (AREA)
Abstract
The invention discloses a safe extracting device for an electric barring gear, which mainly comprises a case, a drive shaft, a worm and gear driving device, a pinion, a gear and a torsion coil. The worm and gear driving device is connected with the drive shaft in a transmission mode, the torsion coil is fixedly connected with the drive shaft, and the external surface of the drive shaft is provided with a thread. The pinion can be movably arranged on the drive shaft, and the center of the pinion is provided with a screw hole matched with the thread. One side of the pinion adjacent to the gear is provided with a forward hook, the pinion is also provided with a backward hook, and the forward hook and the backward hook are respectively located on both sides of pinion teeth. A rack is arranged on the case on the extracting side of the pinion, and the rack is matched with the pinion and the backward hook. The case is also provided with a detecting device used for detecting the displacement of the pinion. The safe extracting device for electric barring gear can ensure the pinion to be engaged with or extracted from the gear more quickly, efficiently, safely and smoothly.
Description
Technical field
The present invention relates to a kind of steam turbine electric barring improvement in performance device, especially a kind of safe extracting device for electric barring gear.
Background technique
Steam turbine needs to start barring gear before the starting red switch and after shutting down, and drives the turbine spindle slow circumvolve, to eliminate the rotor bow distortion that is caused by the temperature difference.After steam turbine starting red switch, be after main frame formally puts into operation, the small gear of barring gear must with turbine rotor on gearwheel withdraw from engagement fully, and be in safe stationary state.
The power of most of electric barring equipment is motor, the rotating speed of motor is higher, by worm and gear speed-reduction apparatus transmission of power is arrived transmission shaft, be down to 20-30r/min with rotating speed this moment, small gear and transmission shaft are threaded, motor rotation when jiggering begins, small gear can be close until axially mesh simultaneously small gear and radially fully engagement of gearwheel with torsion plate from the trend torsion plate, torsion plate is that interference fit or key are connected with transmission shaft, power passes to small gear by torsion plate, small gear passes to gearwheel with torque, and the rotating speed of gearwheel is about 10r/min, and turbine spindle will be kept this rotating speed jiggering.
When jiggering finishes, motor power is cut off, turbine spindle has on foot, gearwheel will continue inertial rotation by the jiggering direction, the passive relation of master original for small gear and gearwheel will be changed, small gear becomes driven wheel by driving wheel, because this moment, transmission shaft was static, small gear rotates along trapezoidal thread, leave gradually torsion plate and break away from gearwheel, stop just breaking away from gearwheel or position that certain is random at last, the position that small gear withdraws from is fixing, and having contact with of small gear is in random position, improper operation and some other reason owing to the user, in time, has and has contact with the accident of being clashed into by epitrochanterian gearwheel and occur, and makes barring gear impaired, and operation is a hidden danger to Host Security.
Summary of the invention
What the objective of the invention is to provide for the deficiency that solves above-mentioned technology a kind ofly guarantees after jiggering is stopped using, and the forward of small gear and small gear has contact with the safe extracting device for electric barring gear that is in safety and fixing position.
In order to achieve the above object, the safe extracting device for electric barring gear that the present invention is designed, it mainly comprises casing, transmission shaft, worm and gear drive unit, small gear, gearwheel and torsion plate, the worm and gear drive unit is connected with transmission shaft driven, torsion plate is fixedly connected on the transmission shaft, and the transmission shaft surface is provided with screw thread; Small gear is removably set on the transmission shaft, its center is provided with the screw that matches with described screw thread, on small gear, be provided with a forward near a side of gearwheel and have contact with, also being provided with one on the described small gear oppositely has contact with, described forward has contact with and oppositely has contact with the both sides that lay respectively at pinion gear teeth, be provided with a tooth bar at the casing that is positioned at the small gear receding side, this tooth bar reaches oppositely to have contact with described small gear and matches; Also be provided with the detection device that detects the small gear displacement on the described casing.Can effectively detect position after small gear withdraws from gearwheel by detection device, so that the site operation personnel is very clear, can transmit jiggering Safe withdrawing state electrical signal to central control chamber simultaneously, so that the down-stream that middle control personnel carry out the steam turbine starting and shut down; By the reverse direction actuation worm and gear, so that transmission shaft backward rotation, so that small gear is to direction (the being the receding side) operation away from gearwheel, oppositely have contact with and to make small gear in running, make small gear and tooth bar engagement, thereby no longer rotate with transmission shaft, and only do axial translation, can more effectively withdraw to home.
In order to make small gear break away from tooth bar when preparing the incision gearwheel, forward has contact with gearwheel certain contact ratio; When same small gear withdraws from gearwheel preparation incision tooth bar, oppositely have contact with tooth bar certain contact ratio is arranged, thereby guarantee that small gear safety meshes or withdraws from the incision of gearwheel smoothly, preferred scheme be described tooth bar end with close tooth bar one side of gearwheel between distance have contact with distance between the small gear increment of the corresponding far-end in exterior edge face and it less than forward, and oppositely have contact with distance between the small gear increment of the exterior edge face far-end corresponding with it, simultaneously greater than the facewidth of small gear.
In order to realize the position probing of small gear goodly, be convenient to automatic control, preferred scheme is that described detection device mainly is comprised of bearing and linkage board, described bearing is positioned on the casing in small gear receding side, and is positioned at the small gear top, and described tooth bar is set on its lower end surface, linkage board is connected on the bearing by hinge structure, its chain connection point is positioned at a side of close small gear on the linkage board, thereby because action of gravitation can make the linkage board lower end turn to small gear one lateral deviation; The upper end of described bearing is provided with indicating structure and the position switch that covers in the time of can being rotated by linkage board, described indicating structure can be various eye-catching indicative marks, position switch can adopt optoelectronic switch commonly used, electromagnetic induction switch etc., small gear can promote linkage board and rotate around chain connection point in withdrawing from process, thereby make its upper end cover indicative mark, but position switch perception This move, and output signal is used for automatically control.
In order to realize more easily the counter-rotating of transmission shaft, preferred scheme is that described worm and gear drive unit comprises a motor, and motor shaft one end of this motor is connected with worm drive, and the other end extend out to outside the motor casing, and is connected with a handwheel.
The safe extracting device for electric barring gear that the present invention obtains, can guarantee that small gear safety meshes or withdraws from the incision of gearwheel smoothly, can effectively detect position after small gear withdraws from gearwheel by detection device, so that the site operation personnel is very clear, simultaneously can transmit jiggering Safe withdrawing state electrical signal to central control chamber, so that the down-stream that middle control personnel carry out the steam turbine starting and shut down; By cooperating of small gear and tooth bar, can make small gear when displacement, only do axial motion and do not rotate, can more fast, more effectively cut gearwheel or withdraw to home.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of motor among the embodiment 1.
Among the figure: casing 1, transmission shaft 2, small gear 3, gearwheel 4, torsion plate 5, forward have contact with 6, oppositely have contact with 7, detection device 8, bearing 9, linkage board 10, motor casing 11, handwheel 12, tooth bar 13, worm gear 14, worm screw 15.
Embodiment
The invention will be further described by reference to the accompanying drawings below by embodiment.
As shown in Figure 1, the described safe extracting device for electric barring gear of the present embodiment, it mainly comprises casing 1, transmission shaft 2, worm and gear drive unit, small gear 3, gearwheel 4 and torsion plate 5, worm and gear drive unit and transmission shaft 2 are in transmission connection, torsion plate 5 is fixedly connected on the transmission shaft 2, and transmission shaft 2 surfaces are provided with screw thread; Small gear 3 is removably set on the transmission shaft 2, its center is provided with the screw that matches with described screw thread, on small gear, be provided with a forward near a side of gearwheel 4 and have contact with 6, it is characterized in that also being provided with one on the described small gear 3 oppositely has contact with 7, described forward has contact with 6 and oppositely have contact with 7 both sides that lay respectively at small gear 3 teeth, be provided with a tooth bar 13 at the casing 1 that is positioned at small gear 3 receding sides, this tooth bar 13 is with described small gear 3 and oppositely have contact with 7 and match; Also be provided with the detection device 8 that detects small gear 3 displacements on the described casing 1.In order to make small gear 3 break away from tooth bars 13 when preparing incision gearwheel 4, forward has contact with 6 has certain contact ratio with gearwheel 4; When same small gear 3 withdraws from gearwheel 4 preparation incision tooth bar 13, oppositely have contact with 7 with tooth bar 13 certain contact ratio is arranged, thereby guarantee that small gear 3 safety mesh or withdraw from the incision of gearwheel 4 smoothly, tooth bar 13 ends and gearwheel 4 has contact with the distance between small gear 3 increments of 6 exterior edge faces and its corresponding far-end less than forward near the distance between tooth bar 13 1 sides, and oppositely have contact with distance between small gear 3 increments of the 7 exterior edge faces far-end corresponding with it, simultaneously greater than the facewidth of small gear 3.In order to realize the position probing of small gear 3 goodly, be convenient to automatic control, described detection device 8 mainly is comprised of bearing 9 and linkage board 10, described bearing 9 is positioned on the casing 1 in small gear 3 receding sides, and is positioned at small gear 3 tops, and described tooth bar 13 is set on its lower end surface, linkage board 10 is connected on the bearing 9 by hinge structure, its chain connection point is positioned at a side of close small gear 3 on the linkage board 10, thereby because action of gravitation can make linkage board 10 lower ends turn to small gear 3 one lateral deviations; The upper end of described bearing 9 is provided with indicating structure and the position switch that covers in the time of can being rotated by linkage board 10, described indicating structure can be various eye-catching indicative marks, red point such as a projection, small gear 3 can promote linkage board 10 and rotate around chain connection point in withdrawing from process, thereby make its upper end cover indicative mark, but position switch perception This move, and output signal is used for automatically control.Certainly detection device 8 can also be industrial displacement transducer commonly used, such as inductive displacement transducer.As shown in Figure 2, described worm and gear drive unit comprises a motor, and motor shaft one end of this motor is connected with worm drive, and the other end extend out to outside the motor casing 11, and is connected with a handwheel 12.After motor stops energising, can realize by handwheel 12 counterrotating of motor shaft.Certainly, the drive mechanism of worm and gear is the mechanical field routine techniques, also can adopt other drive form.
When electric barring equipment in running order, be that small gear 3 is in engagement or withdraws from when not yet putting in place, linkage board 10 is because deadweight, the lower end turns to small gear 3 one lateral deviations, as seen the red point of jiggering on tooth bar 13 bearings 9 tops clear, the on-the-spot red point of jiggering and the position switch teletransmission that shows all points out jiggering in running order to the signal of central control room, forbid the red switch of steam turbine main frame to start this moment, avoid on-the-spot and control room misoperation (central control room also jiggering position switch Design of Signal can be become and steam turbine starting drive logic chain this will be more safe and reliable).
Jiggering finishes, motor power is cut off, small gear 3 is at last after just breaking away from gearwheel 4 or position that certain is random and stopping, the site operation personnel can be by handwheel 12 counterrotatings of motor afterbody, when be installed on the small gear 3 oppositely have contact with 7 with tooth bar 13 engagement after, small gear 3 is to the slow displacement of direction that breaks away from gearwheel 4, driving simultaneously linkage board 10 rotates around hinges, covered by linkage board 10 when jiggering is red, just point out Safe withdrawing of site operation personnel's electric barring, position switch also sends identical information to central control chamber simultaneously.
When steam turbine needs jiggering next time, as long as starting electrical machinery jiggering small gear 3 will be along tooth bar 13 progressively near torsion plate 5 and gearwheel 4, mesh respectively with torsion plate 5 and gearwheel 4 at last, the transmission motor power begins jiggering.This safe extracting device for electric barring gear can be guaranteed after jiggering is inactive, and the forward of small gear 3 and small gear 3 has contact with 6 and is in safety and fixing positions, and the safety in the time of also guaranteeing next time to start simultaneously meshes with the incision of gearwheel 4 smoothly.
Claims (3)
1. safe extracting device for electric barring gear, it mainly comprises casing (1), transmission shaft (2), worm and gear drive unit, small gear (3), gearwheel (4) and torsion plate (5), worm and gear drive unit and transmission shaft (2) are in transmission connection, torsion plate (5) is fixedly connected on the transmission shaft (2), and transmission shaft (2) surface is provided with screw thread; Small gear (3) is removably set on the transmission shaft (2), its center is provided with the screw that matches with described screw thread, on small gear, be provided with a forward near a side of gearwheel (4) and have contact with (6), it is characterized in that also being provided with one on the described small gear (3) oppositely has contact with (7), described forward has contact with (6) and oppositely has contact with the both sides that (7) lay respectively at small gear (3) tooth, be provided with a tooth bar (13) at the casing (1) that is positioned at small gear (3) receding side, this tooth bar (13) and described small gear (3) and oppositely have contact with (7) and match; Also be provided with the detection device (8) that detects small gear (3) displacement on the described casing (1); Described tooth bar (13) end and gearwheel (4) have contact with the distance between small gear (3) increment of (6) exterior edge face and its corresponding far-end less than forward near the distance between tooth bar (13) one sides, and oppositely have contact with distance between small gear (3) increment of (7) exterior edge face far-end corresponding with it, simultaneously greater than the facewidth of small gear (3).
2. safe extracting device for electric barring gear according to claim 1, it is characterized in that described detection device (8) mainly is comprised of bearing (9) and linkage board (10), described bearing (9) is positioned on the casing (1) in small gear (3) receding side, and be positioned at above the small gear (3), described tooth bar (13) is set on its lower end surface, linkage board (10) is connected on the bearing (9) by hinge structure, and its chain connection point is positioned at the upper side near small gear (3) of linkage board (10); The upper end of described bearing (9) is provided with indicating structure and the position switch that covers in the time of can being rotated by linkage board (10).
3. safe extracting device for electric barring gear according to claim 1 and 2, it is characterized in that described worm and gear drive unit comprises a motor, motor shaft one end of this motor is connected with worm drive, and the other end extend out to outside the motor casing (11), and is connected with a handwheel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144666 CN101787905B (en) | 2010-04-12 | 2010-04-12 | Safe extracting device for electric barring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144666 CN101787905B (en) | 2010-04-12 | 2010-04-12 | Safe extracting device for electric barring gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787905A CN101787905A (en) | 2010-07-28 |
| CN101787905B true CN101787905B (en) | 2013-04-17 |
Family
ID=42531262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010144666 Active CN101787905B (en) | 2010-04-12 | 2010-04-12 | Safe extracting device for electric barring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101787905B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943035B (en) * | 2010-10-18 | 2013-10-02 | 德阳东方数控科技有限公司 | Turning unit |
| JP6222614B2 (en) * | 2014-10-30 | 2017-11-01 | 三菱重工コンプレッサ株式会社 | Turning device |
| CN108223127B (en) * | 2018-03-14 | 2023-06-02 | 山东交通学院 | Improved electric jigger for ship host |
| CN108194199B (en) * | 2018-03-14 | 2023-04-18 | 山东交通学院 | Marine main engine turning machine |
| CN109404506B (en) * | 2018-12-07 | 2024-03-01 | 中国船舶重工集团公司第七0四研究所 | Automatic electric jigger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB130299A (en) * | 1918-10-10 | 1919-07-31 | Schneider & Cie | An Improved Power Barring Apparatus. |
| GB564519A (en) * | 1942-04-09 | 1944-10-02 | Svenska Turbinfab Ab | Improved barring mechanism |
| CN2729320Y (en) * | 2004-09-22 | 2005-09-28 | 郭泉生 | Electric barring gear used for repairing generating set |
| CN2931944Y (en) * | 2006-04-21 | 2007-08-08 | 王智 | Oscillating gear tangential meshing type barring gear |
| CN200993191Y (en) * | 2006-12-25 | 2007-12-19 | 南京高速齿轮制造有限公司 | Barring gearbox for gas turbine |
| CN201145005Y (en) * | 2007-12-25 | 2008-11-05 | 杭州南方通达齿轮有限公司 | Inner engaging full-automatic dynamoelectric jigger |
| CN201687534U (en) * | 2010-04-12 | 2010-12-29 | 杭州汽轮机股份有限公司 | Safety withdrawing device of electric barring gear |
-
2010
- 2010-04-12 CN CN 201010144666 patent/CN101787905B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB130299A (en) * | 1918-10-10 | 1919-07-31 | Schneider & Cie | An Improved Power Barring Apparatus. |
| GB564519A (en) * | 1942-04-09 | 1944-10-02 | Svenska Turbinfab Ab | Improved barring mechanism |
| CN2729320Y (en) * | 2004-09-22 | 2005-09-28 | 郭泉生 | Electric barring gear used for repairing generating set |
| CN2931944Y (en) * | 2006-04-21 | 2007-08-08 | 王智 | Oscillating gear tangential meshing type barring gear |
| CN200993191Y (en) * | 2006-12-25 | 2007-12-19 | 南京高速齿轮制造有限公司 | Barring gearbox for gas turbine |
| CN201145005Y (en) * | 2007-12-25 | 2008-11-05 | 杭州南方通达齿轮有限公司 | Inner engaging full-automatic dynamoelectric jigger |
| CN201687534U (en) * | 2010-04-12 | 2010-12-29 | 杭州汽轮机股份有限公司 | Safety withdrawing device of electric barring gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101787905A (en) | 2010-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101787905B (en) | Safe extracting device for electric barring gear | |
| US7309208B2 (en) | Turning gear drive system | |
| CN102872942B (en) | For drive unit and the corresponding grinder of grinder | |
| CN101623834B (en) | Power tool | |
| CN104261265B (en) | A kind of novel gantry crane automatic rotating anchoring device | |
| CN201687534U (en) | Safety withdrawing device of electric barring gear | |
| CN102814364B (en) | Automatic control system of plate rolling machine | |
| CN204920596U (en) | Adopt spacing translation door machine of encoder | |
| CN102654175B (en) | Integrated transmission case for electronically operated gate | |
| CN103163805B (en) | Safeguard device for charging port of electric automobile charging pile | |
| CN101943035B (en) | Turning unit | |
| CN203096443U (en) | Washing machine automatic door lock | |
| CN201284008Y (en) | Electric outboard engine control box | |
| CN203729849U (en) | Driving mechanism for electric rolling door | |
| CN205260968U (en) | Electric actuator | |
| CN206963237U (en) | Switch board lowering or hoisting gear and moistureproof switch board | |
| CN205610506U (en) | Motor safety starting protection system | |
| CN211669101U (en) | Fragment detection structure | |
| CN201169705Y (en) | Control device of electric clothing-airing hanger | |
| CN201426066Y (en) | Electric actuator | |
| CN203112402U (en) | Hoisting machine | |
| CN103168568A (en) | Automatic braking device | |
| CN201281220Y (en) | Power tool | |
| CN100480458C (en) | Controller of electric clothes hanger | |
| KR20100136693A (en) | Elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310022 Building 1, No. 608, Kangxin Road, Linping District, Hangzhou, Zhejiang Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: 357 Shiqiao Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100728 Assignee: Hangzhou Steam Turbine Machinery Equipment Co.,Ltd. Assignor: Hangzhou Turbine Power Group Co.,Ltd. Contract record no.: X2022330000771 Denomination of invention: Electric barring safety exit device Granted publication date: 20130417 License type: Common License Record date: 20221226 |