CN202596821U - Planetary cycloidal pin gear balance wheel throw-in type barring gear - Google Patents
Planetary cycloidal pin gear balance wheel throw-in type barring gear Download PDFInfo
- Publication number
- CN202596821U CN202596821U CN 201220183128 CN201220183128U CN202596821U CN 202596821 U CN202596821 U CN 202596821U CN 201220183128 CN201220183128 CN 201220183128 CN 201220183128 U CN201220183128 U CN 201220183128U CN 202596821 U CN202596821 U CN 202596821U
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- China
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- gear
- barring
- shaped swing
- swing shell
- toothed gear
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Abstract
The utility model relates to a barring gear, discloses a planetary cycloidal pin gear balance wheel throw-in type barring gear, and aims at solving the problems that in the prior art, addendums are prone to happen to an existing barring gear of a steam turbine, and the addendums are prone to be impacted and rubbed. A handwheel and one end of a crank are connected in transmission mode, the other end of the crank is respectively connected with the upper end of a spring and the upper end of a connecting rod in transmission mode, the spring is mounted above a machine frame, the lower end of the connecting rod is connected with the upper end of a pull rod, and the lower end of the pull rod is connected with a connecting ring of a U-shaped swing shell in hinged mode. A speed reducer is mounted on the machine frame, a first toothed gear is mounted on an output shaft of the speed reducer, the first toothed gear meshes with a second toothed gear mounted on a first middle shaft, the first middle shaft is further provided with the swing shell and a third toothed gear, the third toothed gear meshes with a fourth toothed gear mounted on a second middle shaft, the third toothed gear and the fourth toothed gear are arranged in the U-shaped swing shell, and one end of an ejector rod penetrates through the machine frame and corresponds to a casing pipe of the U-shaped swing shell. The planetary cycloidal pin gear balance wheel throw-in type barring gear is used in a barring of the steam turbine .
Description
Technical field
The utility model relates to a kind of barring gear.
Background technique
Electric barring equipment mainly contains two kinds of forms: the electric barring equipment (most of homemade middle-size and small-size steam turbine and 125,300MW unit adopt) that 1) has screw axis; 2) has the electric barring equipment (homemade unit 50MW, 100MW, 200MW adopt) of wobble gear; Has the screw axis electric barring equipment and working principle screw axis electric barring equipment is made up of motor, coupling, small gear, gearwheel, engaging gear, screw axis, jiggering gear, arming pin, handle etc.The engaging gear internal surface is milled with helical tooth and is meshed with screw axis, and engaging gear can horizontally slip along screw axis.When needs drop into jiggering, extract arming pin, pushing handle, setting stick motor coupling earlier and all mesh until engaging gear and jiggering gear.When handle was pushed to the working position, the position limit switch junction closure was connected the jiggering power supply, and motor starting drives turbine rotor rotation carrying out jiggering to full speed.After steam turbine starting red switch, when the rotating speed of rotor is higher than the jiggering rotating speed, make engaging gear become driven wheel by original driving wheel; Be that jiggering gear driven engaging gear rotates, the axial force of screw axis changes direction, and engaging gear and screw axis produce relative rotation; And move along screw axis and to withdraw from the engaging position, handle counter-rotation thereupon breaks off position limit switch to rest position; The motor stall quits work basically.If need manually stop jiggering, but hand press barring motor and stop button, the motor stall, engaging gear withdraws from, jiggering stops.Said structure is easy to that tooth top takes place and tooth top bumps mill.
The model utility content
The purpose of the utility model provides a kind of planet cycloid pinwheel escapement throw-in type barring gear, to solve the problem that present rolling gear of turbine easy generation tooth top and tooth top bump mill.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: said barring gear comprises handwheel, crank, spring, connecting rod, pull bar, U-shaped swing shell, retarder, first gear, first jack shaft, second gear, the 3rd gear, second jack shaft, the 4th gear, frame and push rod; U-shaped swing shell is provided with a connecting ring near the sidewall of bottom; Other sidewall of U-shaped swing shell is provided with a sleeve pipe; One end of handwheel and crank is in transmission connection; The other end of crank is in transmission connection with the upper end of spring and connecting rod respectively; Spring is contained in the top of frame, and the lower end of connecting rod is connected with the upper end of pull bar, and the connecting ring of the lower end of pull bar and U-shaped swing shell is hinged;
Retarder is contained on the frame; First gear is housed on the output shaft of retarder; First gear be contained in second gear engagement on first jack shaft, U-shaped swing shell and the 3rd gear are housed on first jack shaft simultaneously, the 3rd gear be contained in the 4th gear engagement on second jack shaft; The 3rd gear and the 4th gear are located in the U-shaped swing shell, and an end of push rod passes the corresponding setting of sleeve pipe that frame and U-shaped are swung shell.
The utlity model has following beneficial effect: this barring gear master is with having used planet cycloid pinwheel escapement; Solved the tooth top problem of colliding well; It is that pendulum housing ejects to the right rapidly because of the acceleration of gear that barring gear is deactivated automatically; Pushing drawing rod rises, and when the pull bar upper extreme point rises above horizontal position, withdraws from jiggering.
Description of drawings
Fig. 1 is the utility model overall structure plan view, and Fig. 2 is the partial sectional view (after removing speed reducer) of the utility model, and Fig. 3 is the structural representation of the utility model when quitting work state.
Embodiment
Embodiment one: combine Fig. 1 and Fig. 2 that this mode of execution is described; The barring gear of this mode of execution comprises handwheel, crank 2, spring 3, connecting rod 4, pull bar 5, U-shaped swing shell 6, retarder 7, first gear 8, first jack shaft 9, second gear 10, the 3rd gear 12, second jack shaft 13, the 4th gear 14, frame 15 and push rod 16; U-shaped swing shell 6 is provided with a connecting ring 6-1 near the sidewall of bottom; Other sidewall of U-shaped swing shell 6 is provided with a sleeve pipe 6-2; One end of handwheel and crank 2 is in transmission connection, and the other end of crank 2 is in transmission connection with the upper end of spring 3 and connecting rod 4 respectively, and spring 3 is contained in the top of frame 15; The lower end of connecting rod 4 is connected with the upper end of pull bar 5, and the connecting ring 6-1 of the lower end of pull bar 5 and U-shaped swing shell 6 is hinged;
Retarder 7 is contained on the frame; First gear 8 is housed on the output shaft of retarder 7; First gear 8 and second gear, 10 engagements that are contained on first jack shaft 9 are equipped with U-shaped swing shell 6 and the 3rd gear 12, the three gears 12 and the 4th gear 14 engagements that are contained on second jack shaft 13 simultaneously on first jack shaft 9; The 3rd gear 12 and the 4th gear 14 are located in the U-shaped swing shell 6, and an end of push rod 16 passes the corresponding setting of sleeve pipe 6-2 that frame 15 and U-shaped are swung shell 6.
Embodiment two: combine Fig. 1 that this mode of execution is described, the angle of U-shaped swing shell 6 swings of this mode of execution is 120 °.Other mode of execution is identical with embodiment one.
Working principle: during barring gear work; Retarder 7 drives the 5th gear 17 through first gear 8, second gear 10, the 3rd gear 12 and the 4th gear 14 and rotates; The 5th gear 17 is enclosed within steam turbine coupling outer rim; Thereby driving the rotor rotation, the driving that the 3rd gear 12 can only bear motor is around the central shaft rotation of U-shaped swing shell 6.No matter whether the 3rd gear 12 rotates, U-shaped swing shell 6 all can rotate around its central shaft.14 of the 4th gears can rotate around himself center; Again can be under external force with pendulum; The input of barring gear or deactivate all relies on the escapement shell to realize swinging up and down of handling of push rod 16 together with the 4th gear 14, and the action of push rod 16 is by the control of operation handwheel.
Position when barring gear is not worked such as Fig. 3 are in " disengagement " state, and U-shaped swing shell 6 and the 4th gear 14 are sling, and position limit switch breaks off, and motor does not change.Spring bolt inserts pin-and-hole on the handwheel, and handwheel is by locked, and in " disengagements " position, connecting rod 4 is under the effect of spring 3 simultaneously, and the push-tight crank 2 left, and can not there be any motion in whole push rod system, guarantees to take turns 4 reliably and is in a disengaged position.
Devote oneself to work: extract spring bolt, clockwise rotate handwheel, then crank 2 clockwise rotates with handwheel, and drivening rod 4 moves to the bottom right; Pressure spring 3, pull bar 5 descend simultaneously, thereby U-shaped is swung shell 6 and the 4th gear 14 moves downward clockwise; Up to the 4th gear 14 and the 5th gear engagement, after this two-wheeled engagement, the 4th gear 14 just enters near the neutral position; The position limit switch bar drops into the pit on the handwheel, and circuit is connected, and gets final product jiggering by start button again.
Deactivate: deactivating is that jiggering at the end takes place during steam turbine in the unit starting process.During initial steam impulsion rotor, the 5th gear 17 rotating speeds raise suddenly, but the 4th gear 14 is because of receiving motoring; Rotating speed is constant; U-shaped is swung shell 6 thereby is ejected to the right rapidly by the acceleration of the 5th gear 17, and pushing drawing rod 5 rises, when pull bar 5 upper extreme points rise above horizontal position; Connecting rod 4 is under the effect of spring 3, and the pull-up U-shaped is swung shell 6.
Claims (2)
1. planet cycloid pinwheel escapement throw-in type barring gear; It is characterized in that said barring gear comprises handwheel, crank (2), spring (3), connecting rod (4), pull bar (5), U-shaped swing shell (6), retarder (7), first gear (8), first jack shaft (9), second gear (10), the 3rd gear (12), second jack shaft (13), the 4th gear (14), frame (15) and push rod (16); U-shaped swing shell (6) is provided with a connecting ring (6-1) near the sidewall of bottom; Other sidewall of U-shaped swing shell (6) is provided with a sleeve pipe (6-2); One end of handwheel and crank (2) is in transmission connection; The other end of crank (2) is in transmission connection with the upper end of spring (3) and connecting rod (4) respectively; Spring (3) is contained in the top of frame (15), and the lower end of connecting rod (4) is connected with the upper end of pull bar (5), and the connecting ring (6-1) of the lower end of pull bar (5) and U-shaped swing shell (6) is hinged;
Retarder (7) is contained on the frame (15); First gear (8) is housed on the output shaft of retarder (7); First gear (8) and second gear (10) engagement that is contained on first jack shaft (9); U-shaped swing shell (6) and the 3rd gear (12) are housed on first jack shaft (9) simultaneously; The 3rd gear (12) and the 4th gear (14) engagement that is contained on second jack shaft (13), the 3rd gear (12) is located in the U-shaped swing shell (6) with the 4th gear (14), and an end of push rod (16) passes the corresponding setting of sleeve pipe (6-2) that frame (15) and U-shaped are swung shell (6).
2. according to the said planet cycloid pinwheel of claim 1 escapement throw-in type barring gear, it is characterized in that the angle of U-shaped swing shell (6) swing is 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220183128 CN202596821U (en) | 2012-04-26 | 2012-04-26 | Planetary cycloidal pin gear balance wheel throw-in type barring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220183128 CN202596821U (en) | 2012-04-26 | 2012-04-26 | Planetary cycloidal pin gear balance wheel throw-in type barring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596821U true CN202596821U (en) | 2012-12-12 |
Family
ID=47314368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220183128 Expired - Lifetime CN202596821U (en) | 2012-04-26 | 2012-04-26 | Planetary cycloidal pin gear balance wheel throw-in type barring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678203A (en) * | 2012-04-26 | 2012-09-19 | 哈尔滨汽轮机厂有限责任公司 | Planetary cycloid pin wheel balance wheel throw-in type barring device |
-
2012
- 2012-04-26 CN CN 201220183128 patent/CN202596821U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678203A (en) * | 2012-04-26 | 2012-09-19 | 哈尔滨汽轮机厂有限责任公司 | Planetary cycloid pin wheel balance wheel throw-in type barring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
|
| CX01 | Expiry of patent term |