CN2780999Y - Barring gear - Google Patents
Barring gear Download PDFInfo
- Publication number
- CN2780999Y CN2780999Y CN 200520070979 CN200520070979U CN2780999Y CN 2780999 Y CN2780999 Y CN 2780999Y CN 200520070979 CN200520070979 CN 200520070979 CN 200520070979 U CN200520070979 U CN 200520070979U CN 2780999 Y CN2780999 Y CN 2780999Y
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- barring
- motor
- barring gear
- piston rod
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a barring gear, particularly a steam turbine barring gear. The existing barring gear is provided with a barring motor, an input shaft connected with a reduction box and a hydraulic cylinder of a single piston rod, wherein the hydraulic cylinder of a single piston rod can drive a pinion wheel on a rotary shaft, the piston rod extends and propels a handle head of a shifting fork shaft on the reduction box, a shifting fork can be driven to switch the pinion wheel and a gearwheel on a steam turbine rotor, and the pinion wheel and the gearwheel can be engaged with a back barring gear from tooth ends. The existing barring gear has the disadvantages that if two gears are dislocated and clashed, the gears not only can be difficult to be engaged, but also can damage teeth. The utility model is characterized in that the tail part of the barring gear motor is provided with a clutch, a driving part is driven by a speed reducer of a direct connected motor, and a driven part is connected with a rotor shaft of the barring gear motor. A hydraulic cylinder is connected with a pressure relay, an oil inlet of the hydraulic cylinder is communicated with a rodless cavity of the hydraulic cylinder, so the gears are easy to engage, and the teeth are hard to damage.
Description
Technical field the utility model relates to a kind of barring gear, particularly rolling gear of turbine.
Existing its purpose of a kind of barring gear of background technique is that turbine rotor is carried out jiggering, make rotor before operation preheating and rotate during postrun slow cooling and prevent distortion.Its formation is to have a barring motor to connect the input shaft of a speed reducer, drive the transmission shaft that screw key is arranged, that slides on the transmission shaft is equipped with a small gear that inner spiral groove is arranged, speed reducer has a declutch shift shaft shift fork and a handle to be arranged on it, there is a spring spindle below of handle head with the handle crown upward, the top of handle head has its piston rod of oil hydraulic cylinder of a single-piston rod relative with handle head, the piston rod that has a solenoid directional control valve to control oil hydraulic cylinder stretches out and withdraws, a position limit switch is arranged on the speed reducer, when needing to drop into jiggering, solenoid directional control valve is connected the power supply commutation, pressure oil enters the oil hydraulic cylinder rodless cavity, piston rod stretches out the driving handle head to lower swing, the drive shift fork is stirred small gear and is moved to the gearwheel end on the turbine rotor below the transmission shaft, enter engagement from increment and gearwheel, the swing of the long engagement of full-depth tooth back handle puts in place, the depression stroke switch contact, disconnect solenoid directional control valve power connection barring motor power supply, barring motor starting jiggering begins.Its deficiency is small gear and gearwheel when increment meshes such as dislocation is collided, necessary artificial crawl barring motor, make pinion rotation change dislocation, but because the crawl barring motor is difficult to the control rotating speed, tend to cause pinion rotation speed higher, and be obstructed because of small gear moves this moment oil hydraulic cylinder rodless cavity oil pressure is raise, has increased the increment face extruding force of small gear and gearwheel, in this case small gear if rotational velocity higher not only be difficult to mesh also can damage tooth.
The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and provides a kind of small gear to slowly run to change dislocation with gearwheel, and can break away from the barring gear of gearwheel when dislocation is collided automatically.
Model utility content the purpose of this utility model can reach by following measure: a kind of barring gear, there is a barring motor to connect the input shaft of a speed reducer on it, drive the transmission shaft that screw key is arranged, that slides on the transmission shaft is equipped with a small gear that inner spiral groove is arranged, there is a declutch shift shaft shift fork and a handle to be arranged on it on the speed reducer, there is a spring spindle below of handle head with the handle crown upward, the top of handle head has its piston rod of oil hydraulic cylinder of a single-piston rod relative with handle head, the piston rod that has a solenoid directional control valve to control oil hydraulic cylinder stretches out and withdraws, a position limit switch is arranged on the speed reducer, feature of the present utility model is at the barring motor afterbody clutch to be arranged, clutch can be electromagnetism also can be mechanical, the driving link that the speed reducer drive clutch of a direct connection motor is arranged, the driven member of clutch is connected with barring motor rotor shaft tail end, and oil hydraulic cylinder connects its filler opening of pressure relay and is connected with the oil hydraulic cylinder rodless cavity.
The utility model has following advantage compared to existing technology: can be under the situation of barring motor unstart, clutch is slowly run in conjunction with driving the barring motor rotor by speed reducer, small gear is slowly running and gearwheel meshes thereby drive, collide as dislocation, then rotate voluntarily and change dislocation, owing to connecting its filler opening of pressure relay, oil hydraulic cylinder is connected simultaneously with the oil hydraulic cylinder rodless cavity, when the dislocation of small gear and gearwheel is collided and moved when being obstructed, oil hydraulic cylinder rodless cavity oil pressure raises, pressure relay disconnects the solenoid directional control valve power supply, the solenoid directional control valve commutation, make the piston rod withdrawal of oil hydraulic cylinder, upwards swing the drive shift fork at spring spindle active force assistant button and stir the oppositely mobile gearwheel that breaks away from of small gear, pressure relay resets and connects the solenoid directional control valve power supply after oil hydraulic cylinder rodless cavity oil pressure reduces, the solenoid directional control valve commutation, the piston rod of oil hydraulic cylinder stretches out again, the small gear that slowly runs is meshed with gearwheel again, so not only engagement easily, can not damage tooth yet, and can not collide and interrupt dropping into the jiggering process because of two gears dislocation, realized automatic input jiggering.
Appended drawings is to describe an embodiment's of the present utility model plan view.
Embodiment the utility model is described in further detail below in conjunction with accompanying drawing: a kind of barring gear, barring motor＜1 is arranged on it〉connect speed reducer＜2 input shaft, drive transmission shaft＜6 that screw key is arranged〉slide on it small gear＜4 that inner spiral groove is arranged are housed, speed reducer＜2〉declutch shift shaft＜12 are arranged 〉, shift fork＜5 are arranged on it〉and handle＜13, handle＜13〉head the below spring spindle＜7 are arranged with handle＜13 crown upward, handle＜13〉there are oil hydraulic cylinder＜9 of a single-piston rod top of head its piston rod＜8 with handle＜13 relative, solenoid directional control valve＜10 are arranged〉control oil hydraulic cylinder＜9 piston rod＜8 stretch out and withdraw, speed reducer＜2〉on position limit switch＜14 are arranged, in transmission shaft＜6〉there are gearwheel＜3 on the turbine rotor below 〉, feature of the present utility model is in barring motor＜1〉afterbody has magnetic clutch＜18 〉, direct connection motor＜15 are arranged〉speed reducer＜16 drive magnetic clutch＜18 by belt wheel driving link＜17, magnetic clutch＜18〉driven member＜19 with barring motor＜1 rotor shaft＜20 tail end is connected oil hydraulic cylinder＜9 connect pressure relay＜11 its filler opening and oil hydraulic cylinder＜9 rodless cavity is connected.When steam turbine need drop into jiggering, magnetic clutch＜18〉adhesive of connection power supply, motor＜15〉connection power supply speed reducer＜16〉work zone Moving plate tramcar motor＜1〉rotor shaft＜20〉slowly run, thereby drive small gear＜4〉slowly run, solenoid directional control valve＜10〉commutation of connection power supply, oil hydraulic cylinder＜9〉piston rod＜8 stretch out driving handle＜13 head is to lower swing, drive shift fork＜5〉stir small gear＜4 that slowly run〉to gearwheel＜3〉end moves axially from increment and gearwheel＜3〉mesh, collide as dislocation this moment and make small gear＜4 move and be obstructed, oil hydraulic cylinder＜9〉rising of rodless cavity oil pressure, pressure relay＜11〉disconnection solenoid directional control valve＜10〉power supply, solenoid directional control valve＜10〉commutating makes piston rod＜8〉withdrawal, in spring spindle＜7〉effect lower handle＜13 head upwards swing drive shift fork＜5 stir small gear＜4 oppositely move break away from gearwheel＜3, this moment oil hydraulic cylinder＜9 the rodless cavity oil pressure reduces, pressure relay＜11〉reset, reach solenoid directional control valve＜10 behind the delay time of setting〉be switched on the power supply commutation, oil hydraulic cylinder＜9〉piston rod＜8 stretch out driving handle＜13 head, make small gear＜4 that slowly run〉again to gearwheel＜3〉hold to move and mesh, so repetitive operation is until entering engagement, in the long engagement of full-depth tooth back handle＜13〉swing depression stroke switch＜14 that put in place〉contact, this moment magnetic clutch＜18 outage loosen, motor＜15〉outage speed reducer＜16〉stop operating, solenoid directional control valve＜10〉outage commutation makes oil hydraulic cylinder＜9 piston rod＜8 withdrawal, barring motor＜1〉connect the power supply starting, jiggering begins.
Claims (1)
- A kind of barring gear, rolling gear of turbine particularly, there is a barring motor to connect the input shaft of a speed reducer on it, a declutch shift shaft is arranged on the speed reducer, a handle is arranged on the declutch shift shaft, the handle head top has its piston rod of oil hydraulic cylinder of a single-piston rod relative with handle head, feature of the present utility model is at the barring motor afterbody clutch to be arranged, the driving link that the speed reducer drive clutch of a direct connection motor is arranged, the driven member of clutch is connected with barring motor rotor shaft tail end, and oil hydraulic cylinder connects its filler opening of pressure relay and is connected with the oil hydraulic cylinder rodless cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070979 CN2780999Y (en) | 2005-04-21 | 2005-04-21 | Barring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520070979 CN2780999Y (en) | 2005-04-21 | 2005-04-21 | Barring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2780999Y true CN2780999Y (en) | 2006-05-17 |
Family
ID=36762201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520070979 Expired - Fee Related CN2780999Y (en) | 2005-04-21 | 2005-04-21 | Barring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2780999Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943035A (en) * | 2010-10-18 | 2011-01-12 | 德阳东方数控科技有限公司 | Turning unit |
| CN102278452A (en) * | 2011-06-20 | 2011-12-14 | 何青 | Combined gearbox |
| CN102536359A (en) * | 2012-01-19 | 2012-07-04 | 哈尔滨汽轮机厂有限责任公司 | Jigger device with axially injected worms and gears |
| CN105370414A (en) * | 2014-08-26 | 2016-03-02 | 国家电网公司 | Control system based on hydraulic barring gear of gas turbine |
| CN113187566A (en) * | 2021-05-11 | 2021-07-30 | 中国船舶重工集团公司第七0三研究所 | Gear box barring device |
-
2005
- 2005-04-21 CN CN 200520070979 patent/CN2780999Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943035A (en) * | 2010-10-18 | 2011-01-12 | 德阳东方数控科技有限公司 | Turning unit |
| CN101943035B (en) * | 2010-10-18 | 2013-10-02 | 德阳东方数控科技有限公司 | Turning unit |
| CN102278452A (en) * | 2011-06-20 | 2011-12-14 | 何青 | Combined gearbox |
| CN102536359A (en) * | 2012-01-19 | 2012-07-04 | 哈尔滨汽轮机厂有限责任公司 | Jigger device with axially injected worms and gears |
| CN105370414A (en) * | 2014-08-26 | 2016-03-02 | 国家电网公司 | Control system based on hydraulic barring gear of gas turbine |
| CN105370414B (en) * | 2014-08-26 | 2017-01-25 | 国家电网公司 | Control system based on hydraulic barring gear of gas turbine |
| CN113187566A (en) * | 2021-05-11 | 2021-07-30 | 中国船舶重工集团公司第七0三研究所 | Gear box barring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060517 Termination date: 20100421 |