CN2122973U - Harmonic geared reduction unit - Google Patents
Harmonic geared reduction unit Download PDFInfo
- Publication number
- CN2122973U CN2122973U CN 92213487 CN92213487U CN2122973U CN 2122973 U CN2122973 U CN 2122973U CN 92213487 CN92213487 CN 92213487 CN 92213487 U CN92213487 U CN 92213487U CN 2122973 U CN2122973 U CN 2122973U
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- speed reducer
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- gear
- flexbile gear
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Abstract
The utility model relates to a special harmonic gear speed reducer for a jigger, which can be used for the major repair of a steam turbine in a power plant. The utility model is an improved type machine of a planet gear speed reducer. A machine body and an output wheel are matched by a concave-convex structure. Thus the volume of the speed reducer is greatly reduced, and the weight of the speed reducer is reduced. Meanwhile, a cycloidal gear, a gear pin, a pin, etc., are cancelled, new parts, such as a rigidity gear, a flexible gear, a rigidity ring, etc., are used. Consequently, the working performance of the special speed reducer for the jigger of the turbine is improved. Thus, the utility model is an ideal special jigger machine when the turbine in the power plant is in the major repair.
Description
The utility model relates to the speed reducer of a kind of speed reducer, particularly a kind of Harmonic Gears.
General general speed reducer is gone into two off-centre on axle (motor reel), a two eccentric bushing, the two eccentric bushing as double cycloid pin gear speed reducer or planet-gear speed reducer, cycloidal pinwheel planetary gear speed reducer by wheel and is mutually 180 °, cycloid wheel, gear pin, pin, output shaft (speed reducer main shaft) and forms.(consult " cycloid pinwheel planetary gear transmission system " Zhengzhou Polytechnical College's Der Grundsatz der Maschinen and mechanical parts teaching and research room and compile the 1-8 of Science Press page or leaf, 1978) but these machines only can be used for motor deceleration, can not be used for the need that the power station steam turbine is taken off jiggering when covering overhaul.Because it is jiggering needs very slow rotating speed, whether correct for the central position of MEASUREMENT OF STEAM turbine axis accurately.But the past does not have this special mechanical equipment, adopts the driving tractive to be coiled in wire rope on the axle, the method that turbine shaft is rotated during maintenance always.So take a lot of work, time-consuming, work load is big, and measuring position and measuring accuracy are all undesirable.
The purpose of this utility model is will provide a kind of can be directly used in the special retarding device that the overhaul of steam turbine jiggering is used.
Task of the present utility model is finished like this:
As power station special-purpose overhaul of steam turbine jiggering speed reducer, should manufacture and design according to the actual demand of jiggering.It is different from normally used motor reducer, and needs the center height and the unsuitable excessive boundary dimension of specific rotating speed, moment of torsion, speed reducer.
For satisfying above-mentioned designing requirement, serve as the contrast foundation with general double cycloid pin gear speed reducer, make this kind Turbine Barring Gears special reduction gear have following characteristics:
1, total number of teeth in engagement is many simultaneously.Its total number of teeth in engagement generally can reach the 30-40% of total number of teeth, promptly is equivalent to about 100 teeth; And the total number of teeth in engagement of general double cycloid pin gear speed reducer has only about 10% of sum.Therefore, the transmission of this type is deposited loading capability and is much better than general deceleration type, and its transmitting torque exceeds about 50% than the general type of other equal volume.
2, simple in structure, part is few in addition.New machine by 19 in addition parts forms, lack half than other part of double cycloid pin gear speed reducer.
3, gear range is big.One stage gear ratio of new architecture is 1:144, and the velocity ratio of the general speed reducer that volume is close with it is generally about 1:80.
4, running accuracy height.The running accuracy of new architecture is higher by about 30% than the running accuracy of the speed reducer that the general teeth parts of equal accuracy are formed.
5, in light weight, volume is little.Because other part of new architecture is few, volume is little, thus in light weight, in light weight about 40% of general comparable double cycloid pin gear speed reducer.
6, special structural design.
In order to dwindle the volume of speed reducer, alleviate the weight of speed reducer.Design has adopted speed reducer body and speed reducer output wheel with the concave-convex shape cooperating structure, and body and output wheel compactness is combined, and has made full use of the spatial position of internal body.This just reaches reduced volume, the purpose of weight reduction.
Overhaul of steam turbine jiggering special reduction gear of the present utility model is made up of motor, speed reducer body, output wheel, flexbile gear, firm wheel, firm ring, speed reducer main shaft and generator, and its generator is made of two cover eccentric bushing, eccentric disk, roller and bearing, middle glands.Its connecting relation is:
To just take turns and be fixed on motor shaft end, the speed reducer body is fixed on the firm wheel again, the internal tooth of firm wheel is meshed with the last external tooth of flexbile gear, this flexbile gear is the cirque body that last outer gearing tooth and down interior engaging tooth are arranged up and down, with flexbile gear and firm ring drive fit, just in the ring generator is set again.This generator is by two groups of identical eccentric bushings, eccentric disk, roller, with the assembling of eccentric 180 ° of positions, adds middle gland, bearing, little pressing plate and constitutes.Because eccentric bushing is fixed on the motor reel, is furnished with bearing between eccentric bushing and roller, so motor reel can drive eccentric bushing, bearing and roller rotation when rotating.The following internal tooth that the other end of flexbile gear is set, can be meshed with the external tooth of output wheel, and the internal spline on the output wheel combines with the external splines of speed reducer main shaft, on the connecting part of speed reducer main shaft and body, join at last four bearings, add annexes such as back-up ring, gland, felt collar, then full machine assembling finishes.It is to be noted that the lower end of body of this speed reducer establishes a cirque body that protrudes, and output wheel is the cirque body of the band external tooth of a spill, the jog of this body and output wheel just in time matches, and the volume of speed reducer is greatly reduced, so this structure is a kind of special design.
When speed reducer turns round, be fixed on the motor casing because of just taking turns, so motor shaft rotates, two groups of eccentric components that order about in the generator rotate, the drive roller rotates, because of the roller rotary action in the generator makes firm ring and flexbile gear generation deformation, because design season, just the internal tooth (290 tooth) of wheel manyed two teeth than the last external tooth (288 tooth) of flexbile gear, flexbile gear is just being rotated in the wheel, the following internal tooth of flexbile gear is meshed with the external tooth of output wheel again simultaneously, so the rotation of flexbile gear can make output wheel also rotate, and the internal spline of output wheel combines with the external splines of speed reducer main shaft, then output wheel can drive the rotation of speed reducer main shaft.When this speed reducer main shaft matches application with rolling gear of turbine, just can satisfy the needs of overhaul of steam turbine jiggering.
Because the working component of this speed reducer under the effect of generator, makes firm ring and deformation of flexible wheel, and interact with firm wheel and reach the purpose of transferring power.The deformation process of this flexbile gear be a basic symmetry and harmonic wave, so this speed reducer is called the Harmonic Gears speed reducer.
In when design, firm wheel is equated with the circular pitch of flexbile gear tooth, but its number of teeth is unequal, and the attention long axis direction is engaging-in, the nibbling out of short-axis direction.Generator whenever turns around, and flexbile gear is fitted just to take turns and rotated two teeth, thereby reaches the purpose of tooth difference deceleration.
Below in conjunction with accompanying drawing the utility model is done simple the elaboration.
Accompanying drawing 1 is the schematic representation of existing cycloidal pinwheel planetary gear speed reducer;
Accompanying drawing 2 is structural representations of the harmonic gear speed reducer of the utility model indication;
Accompanying drawing 3 is structural representations of eccentric bushing in the generator;
Accompanying drawing 4 is structural representations of eccentric disk in the generator;
Accompanying drawing 5 is structural representations of roller in the generator;
Accompanying drawing 6 is structural representations of speed reducer body;
Accompanying drawing 7 is structural representations of speed reducer output wheel;
In conjunction with the accompanying drawings, a kind of harmonic gear speed reducer is made up of motor (7), speed reducer body (1), output wheel (15), firm wheel (2), firm ring (6), speed reducer main shaft (19), flexbile gear (4) and generator (24); Generator (24) is combined by two groups of eccentric bushings (9), eccentric disk (11), middle gland (8), roller (10).Its connection relation is: it is fastening with body (1) just to take turns (2) and motor case (7), just wheel (2) cooperates with engaging tooth (3,5) with flexbile gear (4), flexbile gear (4) matches with engaging tooth (14,16) with output wheel (15), output wheel (15) matches with main shaft (19) with spline (17,18), firm ring (6) is housed in flexbile gear (4), just be provided with generator (24) in the ring (6), generator (24) by two groups with the interlace eccentric part of 180 ° of installations of eccentric position.It is constituted with eccentric bushing (7), eccentric disk (11), roller (10) and middle gland (8), bearing (12) that key is fixed on the motor shaft (25).At last body (1) and main shaft (19) are fixed with bearing (23), back-up ring (22), gland (21) felt collar (20), then full machine assembling is finished.This speed reducer uses when promptly can be used for steam turbine overhaul jiggering.
Claims (3)
1, a kind of harmonic gear speed reducer, it is made of input shaft (motor reel), two eccentric bushing, output mechanism, the firm wheel (2) that it is characterized in that it and motor case (7), speed reducer body (1) are fastening, just wheel (2) combines with engaging tooth (3,5) with flexbile gear (4), flexbile gear (4) combines with engaging tooth (14,16) with taking turns out wheel (15), and output wheel (15) matches with main shaft (19) with spline (17,18); Firm ring (6) is housed in flexbile gear (4), just be provided with generator (24) in the ring (6), generator (24) by two groups with the interlace eccentric part of 180 ° of installations of eccentric position, it is made of eccentric bushing (7), eccentric disk (11), roller (10) and the middle gland (8), the bearing (12) that are fixed on key on the motor shaft (25); Body (1) fixes with bearing (23), back-up ring (22), gland (21), felt collar (20) with main shaft (19).
2, according to the harmonic gear speed reducer of claim 1, it is characterized in that speed reducer body (1) and speed reducer output wheel (15) are with the concave-convex shape respective outer side edges, be body (1) and the joining part of taking turns out wheel (15) is that the lower end of body (1) has one to projecting inward cirque body, and output wheel (15) is the cirque body that external tooth (16) are arranged of a spill, this external tooth can be meshed with the internal tooth (14) of the lower end of flexbile gear (4), and the concave volume of output wheel (15) is just matched with the convex body of body (1); Output wheel (15) is fixing with internal spline (17) and external splines (18) with speed reducer main shaft (19).
3, according to the harmonic gear speed reducer of claim 1, it is characterized in that its just wheel equate that with the circular pitch of flexbile gear but its number of teeth is unequal, just the internal tooth of wheel manys two teeth than the last external tooth of flexbile gear, promptly firm internal tooth of taking turns has 290 teeth, the last external tooth of flexbile gear has 288 teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213487 CN2122973U (en) | 1992-03-23 | 1992-03-23 | Harmonic geared reduction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213487 CN2122973U (en) | 1992-03-23 | 1992-03-23 | Harmonic geared reduction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122973U true CN2122973U (en) | 1992-11-25 |
Family
ID=4958200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92213487 Granted CN2122973U (en) | 1992-03-23 | 1992-03-23 | Harmonic geared reduction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122973U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465475C (en) * | 2006-12-14 | 2009-03-04 | 重庆大学 | Equivalent ellipsoidal harmonic speed reducer |
| WO2012103786A1 (en) * | 2011-02-01 | 2012-08-09 | 配天(安徽)电子技术有限公司 | Flexspline, harmonic reducer and robot joint structure |
| CN102705451A (en) * | 2012-05-21 | 2012-10-03 | 深圳职业技术学院 | Method for reducing drive eccentric errors of harmonic gear and automatic aligning wave generator |
| CN103354305A (en) * | 2013-07-09 | 2013-10-16 | 上海交通大学 | Harmonic-wave screw linear actuator |
| CN103967693A (en) * | 2014-04-18 | 2014-08-06 | 天津大学 | Wave power generation transmission device base on stiffness-variable harmonic gear and control method of wave power generation transmission device |
| CN106015515A (en) * | 2016-07-20 | 2016-10-12 | 湖南同晟精传技术有限公司 | Cycloid-pin gear harmonic-wave reducer |
-
1992
- 1992-03-23 CN CN 92213487 patent/CN2122973U/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465475C (en) * | 2006-12-14 | 2009-03-04 | 重庆大学 | Equivalent ellipsoidal harmonic speed reducer |
| WO2012103786A1 (en) * | 2011-02-01 | 2012-08-09 | 配天(安徽)电子技术有限公司 | Flexspline, harmonic reducer and robot joint structure |
| CN102705451A (en) * | 2012-05-21 | 2012-10-03 | 深圳职业技术学院 | Method for reducing drive eccentric errors of harmonic gear and automatic aligning wave generator |
| CN102705451B (en) * | 2012-05-21 | 2015-05-27 | 深圳职业技术学院 | Method for reducing drive eccentric errors of harmonic gear and automatic aligning wave generator |
| CN103354305A (en) * | 2013-07-09 | 2013-10-16 | 上海交通大学 | Harmonic-wave screw linear actuator |
| CN103967693A (en) * | 2014-04-18 | 2014-08-06 | 天津大学 | Wave power generation transmission device base on stiffness-variable harmonic gear and control method of wave power generation transmission device |
| CN103967693B (en) * | 2014-04-18 | 2016-10-26 | 天津大学 | Wave-activated power generation actuating device based on variation rigidity harmonic gear and control method thereof |
| CN106015515A (en) * | 2016-07-20 | 2016-10-12 | 湖南同晟精传技术有限公司 | Cycloid-pin gear harmonic-wave reducer |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |