CN2186329Y - Mechanical-hydraulic mixed speed regulating device - Google Patents
Mechanical-hydraulic mixed speed regulating device Download PDFInfo
- Publication number
- CN2186329Y CN2186329Y CN 94207815 CN94207815U CN2186329Y CN 2186329 Y CN2186329 Y CN 2186329Y CN 94207815 CN94207815 CN 94207815 CN 94207815 U CN94207815 U CN 94207815U CN 2186329 Y CN2186329 Y CN 2186329Y
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- hydraulic
- motor
- differential mechanism
- speed
- speed regulation
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Abstract
The utility model discloses constitute by ordinary squirrel-cage motor and one set of hydraulic drive system and planet differential mechanism, squirrel-cage motor and hydraulic drive system connect two input shafts of drive planet differential mechanism respectively, adopt motor and hydraulic motor direct drive differential mechanism simultaneously, the principle that each input rotational speed of differential mechanism can interconversion has been used, and the good stepless speed regulation characteristic of hydraulic motor has been made up, can make the equipment that has the speed governing requirement obtain zero to the stepless speed regulation of rated revolution and under any kind of speed long-term moving characteristic and its mechanical structure and automatically controlled simplest.
Description
The utility model belongs to the arrangements for speed regulation class, mainly proposes a kind of mechanical-hydraulic hybrid type arrangements for speed regulation, is mainly used in machinery squirrel-cage AC machine drive system and realizes stepless speed regulation.
The mode of speed regulation that at present domestic and international squirrel-cage AC motor dragging system mainly adopts has: motor speed-regulating one drive motor is an adjustable speed motor, adopt modes such as frequency conversion, change level, series resistor, controllable silicon power supply, electric set electric supply to carry out speed governing, its good speed adjustment features, efficient height, but automatically controlled complexity, manufacture cost height; Fully hydraulic driven one adopts variable displacement pump, fluid motor-driven mode to carry out speed governing, good speed adjustment features, stable drive, but efficient is lower, manufacture cost is high; Dual-motors Driving-employing double-speed motor drives the differential mechanism mode and carries out speed governing, and it is simple in structure, efficient is high, but can only step speed regulation, impact bigger; Pump control, break controlling and driving-employing oil hydraulic pump or break control differential mechanism carry out speed governing, but stepless speed regulation simple in structure, but can not be in zero long-time running to the arbitrary speed between rated velocity.
The purpose of this utility model provides a kind of employing squirrel cage motor driving, a mechanical hydraulic hybrid driven speed regulating, can make electromechanical equipment obtain stepless speed regulation performance preferably.
The utility model is finished the technological scheme that goal of the invention takes: mainly be made of common squirrel cage motor and a cover hydraulic driving system, planetary differential, take motor and hydraulic driving system directly to drive the technical pattern and the working method of planetary differential simultaneously, the oil hydraulic motor that is squirrel cage motor and hydraulic driving system is connected two input shafts that drive planetary differential respectively, and another axle of differential mechanism links for output shaft and operation mechanism's (load); Hydraulic system is made of oil hydraulic motor, bidirectional hydraulic pump and corresponding relief valve and feed circuit, the bidirectional hydraulic pump can be the bidirectional variable oil hydraulic pump, also can be two-way quantitative hydraulic pump, when adopting two-way metering pump, the corresponding by-pass throttle valve of setting up in the hydraulic system is to be used to control the flow on the working connection.
The working method of the utility model arrangements for speed regulation is: squirrel cage motor inputs to differential mechanism with constant input speed and power, oil hydraulic motor by set-any rotating speed and the power of η e-O-η e also inputs to differential mechanism, because the input of oil hydraulic motor can step-less adjustment, thereby the output that makes differential mechanism obtains zero stepless speed regulation to rated speed, and output is used to drive operation mechanism's equipment that makes and has stepless speed governing characteristic.
The utility model has adopted motor and oil hydraulic motor directly to drive the technical pattern and the mode of planetary differential simultaneously, used the principle that each input speed of differential mechanism can transform mutually, and made up the good stepless speed governing characteristic of oil hydraulic motor, thereby on the machinery that drives with the squirrel-cage AC motor, obtain good stepless speed governing characteristic.
The utility model can change the roadability of the direct driving device equipment of squirrel cage motor, makes its speed adjustable range expand as the stepless speed regulation operation of O-Ve, has increased running stability, and can improve its Security, increases working life.
The utility model needing on the machinery of stepless speed governing characteristic can be widely used in, and the automatically controlled simplification of equipment, efficient are improved.
The accompanying drawing that the utility model provides is:
Accompanying drawing 1 is the utility model structural representation.
Accompanying drawing 2 structural representation when adopting two-way metering pump.
Accompanying drawing 3 is the rate conversion schematic representation.
As shown in Figure 1: the utility model arrangements for speed regulation mainly are made of common squirrel cage motor 2, hydraulic driving system 4, planetary differential 1, two on three axles of differential mechanism 1 are input shaft, one is output shaft, its input shaft is connected with the oil hydraulic motor axle with the squirrel cage motor axle respectively, output shaft and operation mechanism (load) link, hydraulic system is made of oil hydraulic motor 3, bidirectional variable oil hydraulic pump 5 and two relief valves 6, feed circuits 7, and similarly the loop is applied in the drive unit of existing hydraulic shovel.
Be provided for driving the squirrel cage motor 9 of oil hydraulic pump 5.
Planetary differential in the utility model can adopt the planetary differential (comprising bevel gear planetary differential NGW, NGWN, NW and the transmission of WW type planet differential) of any form; Motor is common squirrel cage motor, and used by-pass throttle valve was the technical pattern that has now adopted when oil hydraulic motor and oil hydraulic pump all adopted formation and the relief valve in the system, the feed circuit of plunger type motor and pump, hydraulic system and adopt two-way metering pump.
Figure 2 shows that another kind of structural type of the present utility model, structural type and shown in Figure 1 basic identical, difference is: its oil hydraulic pump 5 adopts two-way metering pump, by-pass throttle valve 8 of also corresponding increase in the hydraulic system, be used to control flow on the working connection, thereby make oil hydraulic motor 3 obtain speed changing function.
Other structure squirrel cage motor 2, differential mechanism 1, oil hydraulic motor 3, relief valve 6, feed circuit 7 are identical with Fig. 1 structure.
Speed regulation process of the present utility model is (in conjunction with the accompanying drawings 3): after squirrel-cage motor 2 directly starts, the input shaft of the differential mechanism 1 that links with motor 2 turns round with rotating speed of motor, the rotation speed operation of the input shaft that links with oil hydraulic motor 3 to set, the rotating speed of these two inputs this moment is synthetic by differential mechanism 1, the rotating speed that makes its output shaft H is zero, the i.e. point of a in Fig. 3 running, the fuel delivery of variable displacement pump 5 is a maximum value, during speed governing, as long as reduce the fuel delivery of two-way variable displacement pump 5, can change the rotating speed of oil hydraulic motor 3, because the rotating speed of motor 2 remains unchanged, the rotating speed of differential mechanism output shaft H begins to rise, it changes shown in the ab section among Fig. 3, when the rotating speed of oil hydraulic motor 3 is zero, the rotating speed of differential mechanism output shaft H then is 1/2nd of its specified output, the i.e. point of b among the figure, if continue to change the fuel feeding direction and the fuel delivery of variable displacement pump, oil hydraulic motor 3 is antiport and acceleration just, because the rotating speed of motor 2 turns to still and remains unchanged at this moment, so the rotating speed of differential mechanism output shaft H continues to rise, it changes as the bc section among Fig. 3, when the fuel delivery of variable displacement pump 5 arrives maximum once more, differential mechanism output shaft H is with maximum rated rotation speed operation, be the c point among Fig. 3, this is acceleration, otherwise then slows down.
Claims (3)
1, a kind of mechanical-hydraulic hybrid type arrangements for speed regulation, be mainly used in machinery squirrel-cage AC machine drive system and realize stepless speed regulation, it is characterized in that: mainly by squirrel cage motor (2), hydraulic driving system (4) and planetary differential (1) constitute, hydraulic driving system (4) is by oil hydraulic motor (3), bidirectional hydraulic pump (5) and relief valve (6) and corresponding feed circuit (7) constitute, the motor shaft of squirrel cage motor (2) is connected with two input shafts of planetary differential (1) respectively with the oil hydraulic motor axle, and the other end of planetary differential (1) is that output shaft is connected with operation mechanism.
2, mechanical hydraulic hybrid arrangements for speed regulation according to claim 1, it is characterized in that: the bidirectional hydraulic pump (5) of hydraulic system (4) can adopt two-way variable displacement pump.
3, mechanical hydraulic hybrid arrangements for speed regulation according to claim 1, it is characterized in that: the bidirectional hydraulic pump (5) in the hydraulic driving system (4) can adopt two-way metering pump (5), and a by-pass throttle valve (8) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207815 CN2186329Y (en) | 1994-03-29 | 1994-03-29 | Mechanical-hydraulic mixed speed regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207815 CN2186329Y (en) | 1994-03-29 | 1994-03-29 | Mechanical-hydraulic mixed speed regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2186329Y true CN2186329Y (en) | 1994-12-28 |
Family
ID=33826027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94207815 Expired - Fee Related CN2186329Y (en) | 1994-03-29 | 1994-03-29 | Mechanical-hydraulic mixed speed regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2186329Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374735C (en) * | 2006-01-24 | 2008-03-12 | 中海油田服务股份有限公司 | Sleigh mounted electrohydraulic ratio regulating system |
| CN101243271A (en) * | 2005-08-15 | 2008-08-13 | 博格华纳公司 | Continuously variable transmission |
| WO2008151461A1 (en) * | 2007-06-11 | 2008-12-18 | Hongjian Zhao | A mechanic pressure-hydraulic pressure combined transmission mechanism and a mechanic power-hydraulic power combined transmission mechanism |
| CN103758976A (en) * | 2014-01-08 | 2014-04-30 | 湖南三一路面机械有限公司 | Power transmission system and grader |
| CN106542448A (en) * | 2016-12-28 | 2017-03-29 | 潍柴动力股份有限公司 | A kind of hydraulic closed system, hydraulic closed walking and hoisting system |
| CN110206786A (en) * | 2019-06-03 | 2019-09-06 | 徽瑞智能装备（黄山）有限责任公司 | A kind of actuator damping adjustable hydraulic motor |
-
1994
- 1994-03-29 CN CN 94207815 patent/CN2186329Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243271A (en) * | 2005-08-15 | 2008-08-13 | 博格华纳公司 | Continuously variable transmission |
| CN101243271B (en) * | 2005-08-15 | 2014-10-29 | 博格华纳公司 | Continuously variable transmission |
| CN100374735C (en) * | 2006-01-24 | 2008-03-12 | 中海油田服务股份有限公司 | Sleigh mounted electrohydraulic ratio regulating system |
| WO2008151461A1 (en) * | 2007-06-11 | 2008-12-18 | Hongjian Zhao | A mechanic pressure-hydraulic pressure combined transmission mechanism and a mechanic power-hydraulic power combined transmission mechanism |
| CN103758976A (en) * | 2014-01-08 | 2014-04-30 | 湖南三一路面机械有限公司 | Power transmission system and grader |
| CN106542448A (en) * | 2016-12-28 | 2017-03-29 | 潍柴动力股份有限公司 | A kind of hydraulic closed system, hydraulic closed walking and hoisting system |
| CN110206786A (en) * | 2019-06-03 | 2019-09-06 | 徽瑞智能装备（黄山）有限责任公司 | A kind of actuator damping adjustable hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |