CN201772026U - Rotational speed limiting device - Google Patents
Rotational speed limiting device Download PDFInfo
- Publication number
- CN201772026U CN201772026U CN2010205020969U CN201020502096U CN201772026U CN 201772026 U CN201772026 U CN 201772026U CN 2010205020969 U CN2010205020969 U CN 2010205020969U CN 201020502096 U CN201020502096 U CN 201020502096U CN 201772026 U CN201772026 U CN 201772026U
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- China
- Prior art keywords
- ratchet
- gear
- rotational speed
- motor
- input
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- Expired - Fee Related
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Abstract
The utility model relates to a rotational speed limiting device, which comprises a housing, an input gear pair, a planetary transmission mechanism and a ratchet wheel mechanism. A driven gear of the input gear pair is fixedly connected with a sun gear of the planetary transmission mechanism; a main drive gear of the input gear pair is meshed with the driven gear; the ratchet wheel mechanism is fixedly mounted on a shaft connected into a whole with the main drive gear; ratchet pawls of the ratchet wheel mechanism are embedded on a ratchet wheel type inner gear; a planetary gear frame is connected with a motor; a gear ring is connected with the motor; and the shaft is connected with an air turbine. According to the use requirement of the motor and the characteristics about one-way operation of the ratchet wheel structure, the conversion between the single input and the double input of the mechanism is realized; and the rotational speed of the motor during the transmission is ensured not to exceed a set value no matter how high the rotational speed of the motor is, so as to guarantee the use requirement of the motor. The favorable effect of the rotational speed limiting device has been improved by use.
Description
Technical field
The utility model relates to a kind of constant speed rotational speed devices.
Background technique
In existing mechanical equipment, the alternator that has requires input speed to be no more than steady state value, and then guarantees the stable of power generation performance.And the rotating speed of the motor that is connected with generator is constantly improving, and therefore when the rotating speed of generator surpasses steady state value, needs a constant speed drive device this moment, is no more than steady state value with the rotating speed that guarantees generator.
Summary of the invention
The purpose of this utility model provides a kind of transmission device of generator constant speed, guarantees that the rotating speed of generator is no more than steady state value.
The technical solution of the utility model is: device comprises housing, input gear pair, epicyclic transmission mechanism, ratchet mechanism composition, described epicyclic transmission mechanism comprises sun gear and the planetary pinion that with planetary carrier be fixed together intermeshing with it, and the planetary pinion outside is engaged with gear ring; The driven gear of described input gear pair and the sun gear of epicyclic transmission mechanism are affixed, the driving gear of input gear pair and driven gear engagement, go up the ratchet matrix that fixedly mounts ratchet mechanism with the axle of driving gear one, also be provided with on the described ratchet mechanism by rotating shaft and be installed in ratchet on the ratchet matrix, on the housing of device the ratchet-type internal gear is housed, described ratchet is embedded on the ratchet-type internal gear by elastic member; Described planetary carrier is connected with motor, and gear ring is connected with generator, and described axle is connected with air turbine.It is little than the quality of the other end that described ratchet is embedded in ratchet-type internal gear one end, and described ratchet also can be 3.
When engine rotation, drive planetary pinion by planet carrier and rotate around sun gear, by the effect of ratchet, sun gear does not rotate, and planetary pinion drives gear ring and rotates, generator for electricity generation; When the rotating speed of generator surpasses constant rotational speed, under the effect by sensor, start turbine rotor, because the direction that turbine rotor rotates is the opposite direction that ratchet blocks direction, therefore can drive axle and be rotated, thereby drive the sun gear rotation, sense of rotation is that the planetary carrier sense of rotation is opposite, therefore can guarantee that the rotating speed of gear ring is constant, and then make the invariablenes turning speed of generator.It is little than the quality of the other end that ratchet is embedded in ratchet-type internal gear one end, therefore center of mass is in the ratchet rear end, when turbine rotor rotates, be subjected to receive in the centrifugal action ratchet during ratchet work, ratchet is thrown off from the ratchet-type internal gear fully, thereby friction is reduced or disappearance, raise the efficiency, reduce wearing and tearing, increased working life.Use three pawl structures, not only satisfy the usage requirement in space, can also guarantee the embedding effect of ratchet, improve to use and go all out to do one's duty regardless of personal danger.
The utility model is according to the usage requirement of generator, characteristics by the unidirectional running of ratchet structure, realized the conversion of single input of mechanism and double input, no matter muchly guaranteed in engine speed, can both make and make the rotating speed of generator be no more than steady state value in the transmission process, ensured the usage requirement of generator, through using checking, respond well.
Description of drawings
Fig. 1 is a schematic representation of the present utility model;
Fig. 2 is the ratchet mechanism structural drawing;
Single input service schematic diagram when Fig. 3 is embedded in the ratchet-type internal gear for ratchet;
Double input fundamental diagram when Fig. 4 throws off for ratchet.
Embodiment
As shown in the figure, device comprises housing 1, input gear pair, epicyclic transmission mechanism, ratchet mechanism composition, described epicyclic transmission mechanism comprises sun gear 4 and the planetary pinion 6 that with planetary carrier 5 be fixed together intermeshing with it, and the planetary pinion outside is engaged with gear ring 7; The driven gear 3 of described input gear pair is affixed with the sun gear 4 of epicyclic transmission mechanism, the driving gear 2 of input gear pair and driven gear 3 engagements, with driving gear 2 one the axle 8 on the fixed installation ratchet mechanism ratchet matrix 9, also be provided with on the described ratchet mechanism by rotating shaft 12 and be installed in ratchet 10 on the ratchet matrix 9, on the housing of device ratchet-type internal gear 11 is housed, described ratchet is embedded on the ratchet-type internal gear 11 by elastic member; Described planetary carrier 5 is connected with motor, and gear ring 7 is connected with generator, and described axle 8 is connected with air turbine.It is little than the quality of the other end that described ratchet 10 is embedded in ratchet-type internal gear 11 1 ends, and described ratchet 10 also can be 3.
Embodiment one
The alternator that certain aircraft accessory system uses, its Constant-Speed Unit comprises housing 1, input gear epicyclic transmission mechanism, ratchet mechanism composition, described epicyclic transmission mechanism comprises sun gear 4 and the planetary pinion 6 that with planetary carrier 5 be fixed together intermeshing with it, and the planetary pinion outside is engaged with gear ring 7; The driven gear 3 of described input gear pair is affixed with the sun gear 4 of epicyclic transmission mechanism, the driving gear 2 of input gear pair and driven gear 3 engagements, with driving gear 2 one the axle 8 on the fixed installation ratchet mechanism ratchet matrix 9, also be provided with on the described ratchet mechanism by rotating shaft 12 and be installed in ratchet 10 on the ratchet matrix 9, on the housing of device ratchet-type internal gear 11 is housed, described ratchet is embedded on the ratchet-type internal gear 11 by elastic member; Described planetary carrier 5 is connected with motor, and gear ring 7 is connected with generator, and described axle 8 is connected with air turbine.It is little than the quality of the other end that described ratchet 10 is embedded in ratchet-type internal gear 11 1 ends, and described ratchet 10 is 1.
Embodiment two
The alternator of certain aeroengine assembling, its Constant-Speed Unit comprises housing 1, input gear epicyclic transmission mechanism, ratchet mechanism composition, described epicyclic transmission mechanism comprises sun gear 4 and the planetary pinion 6 that with planetary carrier 5 be fixed together intermeshing with it, and the planetary pinion outside is engaged with gear ring 7; The driven gear 3 of described input gear pair is affixed with the sun gear 4 of epicyclic transmission mechanism, the driving gear 2 of input gear pair and driven gear 3 engagements, with driving gear 2 one the axle 8 on the fixed installation ratchet mechanism ratchet matrix 9, also be provided with on the described ratchet mechanism by rotating shaft 12 and be installed in ratchet 10 on the ratchet matrix 9, on the housing of device ratchet-type internal gear 11 is housed, described ratchet is embedded on the ratchet-type internal gear 11 by elastic member; Described planetary carrier 5 is connected with motor, and gear ring 7 is connected with generator, and described axle 8 is connected with air turbine.It is little than the quality of the other end that described ratchet 10 is embedded in ratchet-type internal gear 11 1 ends, and described ratchet 10 is 3.
Claims (3)
1. constant speed rotational speed devices, it is characterized in that, device comprises housing (1), input gear pair, epicyclic transmission mechanism, ratchet mechanism composition, described epicyclic transmission mechanism comprises sun gear (4) and the planetary pinion (6) that with planetary carrier (5) be fixed together intermeshing with it, and the planetary pinion outside is engaged with gear ring (7); The driven gear of described input gear pair (3) is affixed with the sun gear (4) of epicyclic transmission mechanism, the driving gear (2) of input gear pair and driven gear (3) engagement, go up the ratchet matrix (9) that fixedly mounts ratchet mechanism with the axle (8) of driving gear (2) one, also be provided with on the described ratchet mechanism by rotating shaft (12) and be installed in ratchet (10) on the ratchet matrix (9), on the housing of device ratchet-type internal gear (11) is housed, described ratchet is embedded on the ratchet-type internal gear (11) by elastic member; Described planetary carrier (5) is connected with motor, and gear ring (7) is connected with generator, and described axle (8) is connected with air turbine.
2. constant speed rotational speed devices as claimed in claim 1 is characterized in that, it is little than the quality of the other end that described ratchet (10) is embedded in ratchet-type internal gear (11) one ends.
3. constant speed rotational speed devices as claimed in claim 1 is characterized in that, described ratchet (10) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205020969U CN201772026U (en) | 2010-08-20 | 2010-08-20 | Rotational speed limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205020969U CN201772026U (en) | 2010-08-20 | 2010-08-20 | Rotational speed limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772026U true CN201772026U (en) | 2011-03-23 |
Family
ID=43751870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205020969U Expired - Fee Related CN201772026U (en) | 2010-08-20 | 2010-08-20 | Rotational speed limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772026U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969251A (en) * | 2010-12-01 | 2011-02-09 | 哈尔滨东安发动机（集团）有限公司 | Constant rotating speed device |
-
2010
- 2010-08-20 CN CN2010205020969U patent/CN201772026U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969251A (en) * | 2010-12-01 | 2011-02-09 | 哈尔滨东安发动机（集团）有限公司 | Constant rotating speed device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20160820 |