CN201763916U - Variable-speed-ratio hydraulic planet gear speed increasing box - Google Patents
Variable-speed-ratio hydraulic planet gear speed increasing box Download PDFInfo
- Publication number
- CN201763916U CN201763916U CN200920220189XU CN200920220189U CN201763916U CN 201763916 U CN201763916 U CN 201763916U CN 200920220189X U CN200920220189X U CN 200920220189XU CN 200920220189 U CN200920220189 U CN 200920220189U CN 201763916 U CN201763916 U CN 201763916U
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- gear
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- planet
- oil motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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- General Engineering & Computer Science (AREA)
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Abstract
The utility model provides a variable-speed-ratio hydraulic planet gear speed increasing box which comprises a speed increasing box; one stage of planet speed variator provided with a hydraulic feedback system is arranged in the speed increasing box; the planet speed variator comprises an input shaft (1), a planet gear (2), a rotatable internal gear ring (3), a sun gear (4), an output shaft (5), a piston pump driving gear pair (6), a variable piston pump (7), an oil filter (8), a relief valve (9), a piston oil motor (10) and an oil motor output gear part (11); wherein, the output shaft and the internal gear ring are integrated as a whole; the piston pump driving gear pair (6) positioned on the output shaft (5) drives the variable piston pump (7) and the piston oil motor (10); and the piston oil motor (10) drives the sun gear (4) to rotate through the oil motor driving gear part (11). Therefore, by controlling the flow rate of the variable piston pump through a control system as required, the rotating speed of the oil motor can be controlled, so that the speed ratio of the whole gearbox can be continuously adjustable.
Description
Technical field
The utility model relates to hydraulic transmission and gear-box, especially a kind of hydraulic pressure planetary gearbox of variable gear ratio.
Background technique
Gear-box is the critical component of wind-driven generator, and the wind-driven generator of China's MW class all adopts the step-up gear that comprises the Gear Planet Transmission level at present.The example of this class planet speedup box is disclosed in Chinese patent CN1427149A and CN2893312Y.But the shortcoming of the planet speedup box that these are traditional is a gear ratio can not be changed.And the wind wheel of wind-driven generator is just caught more wind energy when having only by different wind speed variable-speed operation.So adopt the unit of conventional gearbox so can only adopt the double-fed generator of variable speed operation to satisfy the requirement of speed change usually.And double-fed generator must be furnished with 1/3 flat-out current transformer, makes product complicated, brings the increase of cost, and electric energy quality and low voltage to pass through performance bad.In recent years, Europe has fewer companies to occur utilizing the fluid coupling technology to realize the variable gear ratio gear-box at the megawatt-level wind unit in succession, and adopts the technology of synchronous generator, but its complex structure, cost is higher.
Summary of the invention
Goal of the invention of the present utility model is, a kind of hydraulic pressure planetary gearbox of variable gear ratio is provided, to satisfy needs to the wind wheel variable-speed operation, thereby can adopt the general synchronous generator of constant-speed operation, so just got rid of current transformer, reduce the unit cost, and improved the electric energy quality greatly and low voltage is passed through performance, can also reduce cost of electricity-generating simultaneously.
The technical solution of the utility model is, a kind of hydraulic pressure planetary gearbox of variable gear ratio, comprise speedup box, it is characterized in that, this speedup box is provided with the planet speed-change level of one-level band hydraulic pressure reponse system, this planet speed-change level comprises: input shaft, planet wheel, can change ring gear, sun gear, output shaft, plunger pump driving gear wheel set, Variable plunger pump, oil strainer, relief valve, plunger oil motor, oil motor output gear wheel set, output shaft and ring gear are one, be positioned at the plunger pump driving gear wheel set on the output shaft, drive Variable plunger pump, and the drive plunger oil motor, plunger oil motor drives sun gear by oil motor driving gear wheel set and rotates.
The beneficial effects of the utility model are, hydraulic pressure planetary gearbox of the present utility model is used in and has realized the adjustable continuously of variable gear ratio on the large-scale wind driven generator, can satisfy needs to the wind wheel variable-speed operation, thereby can make the wind-powered electricity generation unit adopt the general synchronous generator of constant-speed operation, get rid of current transformer.Owing to adopt synchronous generator, can easily adopt high-voltage generator directly to network simultaneously, save main transformer, greatly reduce cost, and improved the electric energy quality greatly.In addition, in the pressure circuit of oil pump outlet, also can add elastic element in case of necessity, to reduce the peak value of dynamic load in the Transmitted chains.
Description of drawings
Fig. 1 is the structure principle chart of the hydraulic pressure planetary gearbox of variable gear ratio of the present utility model;
Fig. 2 is the skeleton diagram of hydraulic control system principle.
Embodiment
Referring to accompanying drawing 1, the hydraulic pressure planetary gearbox of variable gear ratio is on the basis of a conventional speedup box 12, increases the planet speed-change level of upper level band hydraulic pressure reponse system.This planet speed-change level mainly comprises: input shaft 1, planet wheel 2, can change ring gear 3, sun gear 4, output shaft 5, plunger pump driving gear wheel set 6, Variable plunger pump 7, oil strainer 8, relief valve 9, plunger oil motor 10, oil motor output gear wheel set 11, output shaft 5 is an one with ring gear 3.Hydraulic pressure planet speed-change level is the difference structure form of NGW.As output shaft is arranged on the ring gear, and establishes sun gear and maintain static, then this mechanism can become a fixed speed ratio i
dSpeedup box, output shaft will be with a certain rotation speed n
dRotate.If sun gear is with certain speed n
tRotate, at this moment the rotating speed of gear ring will and then be accelerated or slow down, and promptly its output speed will become n
d+ n
tOr will depend on that turning to of sun gear 4 is identical with turning to of planet wheel 2 or opposite actually accelerate to slow down, i.e. n
tOn the occasion of still being negative value.Adopt in this patent on the occasion of, promptly sun gear turn to identical with turning to of planet wheel.Because the output speed of this grade has changed speed ratio i at this moment
bAlso just changed, i.e. i
b≠ i
dThereby, realized change speed ratio purpose.Can utilize a pair of gear pair of output shaft to remove to drive a Variable plunger pump, and then drive a plunger oil motor, and gear pair be removed to drive sun gear with certain rotational speed, thereby realize the adjustable purpose of gear-box speed ratio by another.As long as the flow that continuously changes plunger pump just can realize continuously changing the speed ratio of speed change level.
For guaranteeing that speed ratio can change on request, can hydraulic control system be set by the skeleton diagram shown in the accompanying drawing 2.By this figure, can obtain the relation of different theories wind speed and sun gear in advance by requirement of wind wheel variable-speed operation and generator constant-speed operation condition, with of the input of this relation as regulating system, by controller action in variable displacement pump and oil motor, remove to control the rotating speed of sun gear, and the tach signal of sun gear is introduced the input end of regulating system as reverse feedback.Can reach the actual speed ratio that changes speedup box on request like this.
Gear-box of the present utility model is in when operation, and the load that the output shaft power that it is main removes driving gearbox feeds back to sun gear with fraction power very by the hydraulic pressure reponse system simultaneously, and passes to output shaft by planet wheel.This part power overwhelming majority of feedback turns back to again on the output shaft, and the power of real loss only is the loss in efficiency of each element in this process.
The rotating speed of sun gear is controlled by oil pump-oil motor.Speed ratio that can be as requested changes be provided with a control system, utilizes the controlled ability of flow of plunger pump to control the rotating speed of oil motor, realizes the purpose of speed ratio continuous controllable.This gear-box can be used for MW class wind turbine, and at this moment wind power generating set can adopt conventional synchronous generator.Because the generator that is in its Transmitted chains terminal is drawn in sync state by electrical network all the time, promptly rotating speed is synchronous speed all the time, and to have controlled speed ratio be the may command wind speed round so have only, so that the best power coefficient when guaranteeing the following different wind speed of design wind speed.The power of the reponse system transmission of this speedup box is no more than 10% of rated power when hanging down wind speed, be no more than 3% when middle wind speed, is almost 0 when high wind speed.The efficient of hydraulic pressure planetary stage can reach 92% when hanging down wind speed, can reach for 96%～98% (loss does not comprise the loss of original gear-box) when middle and high wind speed.The double-fed wind power generator group can be used synchronous generator instead after adopting this patent, can save the loss of current transformer and main transformer, and the complete machine total efficiency is improved.
This speedup box also can be applicable to the various fields that need to adopt the planet tool wheel speedup box that changes gear ratio.
Claims (6)
1. the hydraulic pressure planetary gearbox of a variable gear ratio, comprise speedup box, it is characterized in that, this speedup box is provided with the planet speed-change level of one-level band hydraulic pressure reponse system, this planet speed-change level comprises: input shaft (1), planet wheel (2), can change ring gear (3), sun gear (4), output shaft (5), plunger pump driving gear wheel set (6), Variable plunger pump (7), oil strainer (8), relief valve (9), plunger oil motor (10), oil motor output gear wheel set (11), output shaft and ring gear are one, be positioned at the plunger pump driving gear wheel set (6) on the output shaft (5), drive Variable plunger pump (7), and drive plunger oil motor (10), plunger oil motor (10) drives sun gear (4) by oil motor driving gear wheel set (11) and rotates.
2. the hydraulic pressure planetary gearbox of variable gear ratio according to claim 1 is characterized in that, the planet speed-change level is the Gear Planet Transmission structural type of " internal gear pair-public planet wheel-external gear pump pair ", and its output shaft is arranged on the ring gear.
3. the hydraulic pressure planetary gearbox of variable gear ratio according to claim 2 is characterized in that, sun gear (4) maintains static.
4. the hydraulic pressure planetary gearbox of variable gear ratio according to claim 2 is characterized in that, sun gear (4) can rotate according to the direction identical or opposite with turning to of planet wheel (2).
5. the hydraulic pressure planetary gearbox of variable gear ratio according to claim 1 is characterized in that, the flow of Variable plunger pump (7) is what continuously change, thereby realizes continuously changing the speed ratio of speed change level.
6. the hydraulic pressure planetary gearbox of variable gear ratio according to claim 1 is characterized in that, is provided with hydraulic control system in the hydraulic pressure reponse system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920220189XU CN201763916U (en) | 2009-10-28 | 2009-10-28 | Variable-speed-ratio hydraulic planet gear speed increasing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920220189XU CN201763916U (en) | 2009-10-28 | 2009-10-28 | Variable-speed-ratio hydraulic planet gear speed increasing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763916U true CN201763916U (en) | 2011-03-16 |
Family
ID=43716521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920220189XU Expired - Fee Related CN201763916U (en) | 2009-10-28 | 2009-10-28 | Variable-speed-ratio hydraulic planet gear speed increasing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763916U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN102678876A (en) * | 2012-06-04 | 2012-09-19 | 东北大学 | Wind power generation hydraulic control shifting voltage stabilizer |
| CN102900607A (en) * | 2012-10-19 | 2013-01-30 | 济南轨道交通装备有限责任公司 | Electro-hydraulic servo synchronizer for megawatt wind turbine generator |
| CN103185121A (en) * | 2013-04-02 | 2013-07-03 | 江苏大学 | Engine liquid compound transmission speeder |
| CN103277252A (en) * | 2013-04-10 | 2013-09-04 | 浙江大学 | Control method of grid connected wind turbine |
| CN108006188A (en) * | 2017-12-27 | 2018-05-08 | 北京理工大学 | A kind of dual-speed hydraulic hybrid electric drive system |
| CN118815881A (en) * | 2024-09-14 | 2024-10-22 | 杭州超江科技有限公司 | Planetary gear continuously variable transmission mechanism |
-
2009
- 2009-10-28 CN CN200920220189XU patent/CN201763916U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506017A (en) * | 2011-11-22 | 2012-06-20 | 江麓机电科技有限公司 | Static-pressure differential speed regulation-type main transmission in wind generating set |
| CN102678876A (en) * | 2012-06-04 | 2012-09-19 | 东北大学 | Wind power generation hydraulic control shifting voltage stabilizer |
| CN102678876B (en) * | 2012-06-04 | 2014-05-14 | 东北大学 | Wind power generation hydraulic control shifting voltage stabilizer |
| CN102900607A (en) * | 2012-10-19 | 2013-01-30 | 济南轨道交通装备有限责任公司 | Electro-hydraulic servo synchronizer for megawatt wind turbine generator |
| CN102900607B (en) * | 2012-10-19 | 2015-05-27 | 济南轨道交通装备有限责任公司 | Electro-hydraulic servo synchronizer for megawatt wind turbine generator |
| CN103185121A (en) * | 2013-04-02 | 2013-07-03 | 江苏大学 | Engine liquid compound transmission speeder |
| CN103277252A (en) * | 2013-04-10 | 2013-09-04 | 浙江大学 | Control method of grid connected wind turbine |
| CN108006188A (en) * | 2017-12-27 | 2018-05-08 | 北京理工大学 | A kind of dual-speed hydraulic hybrid electric drive system |
| CN108006188B (en) * | 2017-12-27 | 2020-06-26 | 北京理工大学 | Double-speed hydraulic hybrid power driving system |
| CN118815881A (en) * | 2024-09-14 | 2024-10-22 | 杭州超江科技有限公司 | Planetary gear continuously variable transmission mechanism |
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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: 20110316 Termination date: 20111028 |