CN216842928U - Anti-reverse differential planetary mechanism - Google Patents
Anti-reverse differential planetary mechanism Download PDFInfo
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- CN216842928U CN216842928U CN202123082827.6U CN202123082827U CN216842928U CN 216842928 U CN216842928 U CN 216842928U CN 202123082827 U CN202123082827 U CN 202123082827U CN 216842928 U CN216842928 U CN 216842928U
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Abstract
The utility model provides an anti-reverse differential planetary mechanism, which comprises an outer gear ring, a planetary gear, a planetary carrier, a sun gear, an anti-reverse device and a planetary carrier input gear; the outer gear ring is meshed with the planet wheel, the planet wheel is meshed with the sun wheel, the anti-reverse device is installed on the sun wheel, and the planet carrier input gear is connected with the planet carrier. The utility model discloses transmission efficiency is high, the interval of speed governing is wide, can satisfy the operation requirement of water-feeding pump unit.
Description
Technical Field
The utility model belongs to prevent differential planetary mechanism of anti-reversion, concretely relates to prevent differential planetary mechanism of anti-reversion.
Background
The speed regulating equipment of the boiler feed pump unit of the power plant usually adopts a hydraulic coupler, the input end of the coupler is connected with a power frequency motor, the rotating speed is kept unchanged after the coupler is started, and the output end of the coupler is connected with a boiler feed pump. Because the starting speed of the power frequency motor is high, and the rotating speed of the feed pump is in a low interval when the feed pump is started, the coupler can play a role in softening and regulating the speed by regulating the opening of the scoop tube. But the efficiency of the coupling is low in certain rotational speed intervals. If the overall efficiency of the unit needs to be improved, a new equipment scheme needs to be adopted.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transmission efficiency is high, the speed governing is interval wide, can satisfy the operation requirement of feed pump unit's a prevent differential planetary mechanism of reverse.
An anti-reverse differential planetary mechanism comprises an outer gear ring, a planet wheel, a planet carrier, a sun wheel, an anti-reverse device and a planet carrier input gear; the outer gear ring is meshed with the planet wheel, the planet wheel is meshed with the sun wheel, the anti-reverse device is installed on the sun wheel, and the planet carrier input gear is connected with the planet carrier.
Furthermore, the planet carrier input gear and the planet carrier input power through the input 1 and the input 2, and the power is converged by the planet gears and then is output through the sun gear.
Furthermore, the equipment connected with the outer gear ring, the planet carrier input gear and the sun gear rotates in one direction.
The beneficial effects of the utility model reside in that:
1. when the speed regulating motor is started, the speed regulating motor is firstly started to a high rotating speed to drive the planet carrier, the water feeding pump connected with the sun gear tends to rotate reversely at the moment, the rotation of the water feeding pump is limited due to the anti-reverse mechanism, the rotating speed of the water feeding pump is 0 at the moment, and meanwhile, the outer gear ring and the power frequency motor are driven to rotate;
2. after the power frequency motor is started to a rated rotating speed, the solar wheel is driven to drive the water feeding pump to rotate in the forward direction, and the speed regulating motor is in a high rotating speed interval, so that the water feeding pump is in a low rotating speed interval, and the purpose of soft start of the water feeding pump is achieved;
3. after the starting is finished, the rotating speed of the speed regulating motor is reduced, so that the rotating speed of the water feeding pump is increased to a normal working range, and the stepless speed regulation of the water feeding pump can be realized in the range.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
An anti-reverse differential planetary mechanism comprises an outer gear ring 1, a planet wheel 2, a planet carrier 3, a sun wheel 4, an anti-reverse device 5 and a planet carrier input gear 6; the outer gear ring 1 is meshed with the planet wheel 2, the planet wheel 2 is meshed with the sun wheel 4, the anti-reversion device 5 is installed on the sun wheel 4, and the planet carrier input gear 6 is connected with the planet carrier 3.
The input 1 and the input 2 input power through the planet carrier input gear 6 and the planet carrier 3, and the power is converged by the planet gears 2 and then output through the sun gear 4. The equipment connected with the outer gear ring 1, the planet carrier input gear 6 and the sun gear 4 rotates in one direction, the rotating speed of the input 1 is fixed, the rotating speed of the input 2 is adjustable, and the higher the rotating speed of the input 2 is, the lower the output rotating speed is. Since the equipment connected to the output requires the lowest speed to start, input 2 is started to the highest speed and then input 1 is started.
The input 2 is started firstly, the planet carrier 3 is driven to rotate through the planet carrier input gear 6, the outer gear ring 1 is in a driven rotation state at the moment, the rotation trend of the sun gear 4 is reversed, and the anti-reverse device 5 is added because the equipment connected with the sun gear 4 is required to rotate in a single direction. The anti-reverse device 5 is a ratchet wheel and pawl mechanism, when the input 2 is started, the outer gear ring 1 is driven to rotate, the rotating speed of the sun gear 4 is 0 under the action of the anti-reverse device 5, and when the input 1 is started, the sun gear 4 starts to rotate.
In the illustration of FIG. 1: the power frequency motor is input 1, power is input through the outer gear ring 1, the speed regulating motor is input 2, power is input through the planet carrier input gear 6 and the planet carrier 3, the output is connected with the water feeding pump, and the power is converged through the planet gear 2 and then is transmitted to the water feeding pump through the sun gear 4. The speed regulating motor is started firstly, the rotating speed of the water feeding pump is 0 under the action of the anti-reverse device 5, and then the power frequency motor is started to the rated rotating speed to drive the water feeding pump to operate. When the speed regulating motor regulates the speed, the rotating speed of the water feeding pump is changed along with the speed regulation motor, and the purpose of stepless speed regulation is achieved.
A double-input single-output differential planetary structure is adopted, wherein one input power frequency motor is connected with an outer gear ring, the other input speed regulating motor is connected with a planetary carrier through a parallel gear, and the output end of the input speed regulating motor is connected with a water feeding pump. The purpose of stepless regulation of the rotating speed of the water feeding pump is achieved by regulating the rotating speed of the speed regulating motor, and the higher the rotating speed of the speed regulating motor is, the lower the rotating speed of the water feeding pump is.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An anti-reverse differential planetary mechanism is characterized in that: comprises an outer gear ring (1), a planet wheel (2), a planet carrier (3), a sun wheel (4), an anti-reversion device (5) and a planet carrier input gear (6); outer ring gear (1) and planet wheel (2) meshing, planet wheel (2) and sun gear (4) meshing, anti-reverse device (5) are installed in sun gear (4), planet carrier input gear (6) are connected with planet carrier (3).
2. An anti-reverse differential planetary mechanism as claimed in claim 1, wherein: the planet carrier input gear (6) and the planet carrier (3) input power through the input 1 and the input 2, and the power is converged by the planet gear (2) and then is output through the sun gear (4).
3. An anti-reverse differential planetary mechanism as claimed in claim 1, wherein: and the equipment connected with the outer gear ring (1), the planet carrier input gear (6) and the sun gear (4) rotates in one direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082827.6U CN216842928U (en) | 2021-12-09 | 2021-12-09 | Anti-reverse differential planetary mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123082827.6U CN216842928U (en) | 2021-12-09 | 2021-12-09 | Anti-reverse differential planetary mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216842928U true CN216842928U (en) | 2022-06-28 |
Family
ID=82107114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123082827.6U Active CN216842928U (en) | 2021-12-09 | 2021-12-09 | Anti-reverse differential planetary mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216842928U (en) |
-
2021
- 2021-12-09 CN CN202123082827.6U patent/CN216842928U/en active Active
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