CN1049306C - Starting device for large motor - Google Patents
Starting device for large motor Download PDFInfo
- Publication number
- CN1049306C CN1049306C CN 92105203 CN92105203A CN1049306C CN 1049306 C CN1049306 C CN 1049306C CN 92105203 CN92105203 CN 92105203 CN 92105203 A CN92105203 A CN 92105203A CN 1049306 C CN1049306 C CN 1049306C
- Authority
- CN
- China
- Prior art keywords
- motor
- starting
- permanent magnet
- earth permanent
- magnet rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a starting device of a large motor. The device is provided with a starting motor and a shaft coupling, wherein the devices are characterized in that the starting motor is a numerical control electric drive system and comprises a rare earth permanent magnet rotor motor, a controllable variable frequency inverter power supply and a programmable controller, and the rare earth permanent magnet rotor motor is connected with a motor started by the shaft coupling with the function of unidirectional coupling; the shaft coupling is composed of an input connection mandrel, an output overrunning clutch wheel boss and a clutch. The present invention uses the program of a programmable controller for controlling, thereby reducing the surge of current during starting and also reducing the starting time by the rare earth permanent magnet motor for starting the motor started by raising speed.
Description
A kind of starting device of large-size machine is used to help the smooth starting of various large-size machines, is specially adapted to regulate the motor of exciting current, and (as inductor motor, steromotor), the impulse current when making starting is reduced to the permission degree.
The startup of large-size machine is the process of a more complicated now.Because the capacity of large-size machine and starting inertia are bigger, thereby the rush of current during starting is bigger, and starting is longer perdurabgility.This all has bigger influence to power supply grid and motor itself.Mostly present solution is to adopt sacrifice design of electrical motor performance, or adopt motor to carry out excitation adjustment starting than the adjustable rotor excitation current of structure more complicated, or adopting direct reduced voltage starting, the solution of these three kinds of startings all has shortcoming separately.
The objective of the invention is to invent a kind of starting device of large-size machine,, be used to help the smooth starting of large-size machine, rush of current and starting time when big spoke degree reduces starting as an attachment device of large-size machine.
Structure of the present invention as shown in Figure 1, it has actuating motor 1, shaft joint 2, it is characterized in that: actuating motor 1 is fully numerical-controlled electric towing, it includes rare-earth permanent magnet rotor motor 3, controlled frequency conversion inverter 4 and Programmable Logic Controller 5, the shaft joint 2 of rare-earth permanent magnet rotor motor 3 by unidirectional coupling function is arranged with linked to each other by actuating motor, shaft joint 2 connects axle 6 by input, output overdrive clutch wheel hub 7 and clutch body 8 are formed.
Accompanying drawing 1 is general structure schematic diagram of the present invention.
Accompanying drawing 2 is the cutaway view when clutch body 8 uses roller in the shaft joint 2.
Accompanying drawing 3 is the cutaway view when clutch body 8 uses friction pawl in the shaft joint 2.
The present invention is made up of actuating motor 1 and shaft joint 2.Actuating motor 1 is a fully numerical-controlled electric towing, it includes rare-earth permanent magnet rotor motor 3, controlled frequency conversion inverter 4 and Programmable Logic Controller 5, the shaft joint 2 of rare-earth permanent magnet rotor motor 3 by unidirectional coupling function is arranged with linked to each other by actuating motor, shaft joint 2 connects axle 6 by input, and output overdrive clutch wheel hub 7 and clutch body 8 are formed.
The present invention uses the power source of being done starting by the rare-earth permanent magnet rotor motor 3 of Programmable Logic Controller 5 and 4 controls of controlled frequency conversion inverter and driving.Under the control of Programmable Logic Controller 5, the output frequency of controlled frequency conversion inverter 4 progressively promotes from zero, rotates thereby make rare-earth permanent magnet rotor motor 3 do synchronous raising speed.At shaft joint 2 places, because connecting the rotor of axle 6 and rare-earth permanent magnet motor 3, input joins, by its driven rotary.And simultaneously, with the output overdrive clutch wheel hub 7 that is linked to each other by starting motor rotor under being hindered by the actuating motor axle, the trend of not rotating is arranged, under the effect of frictional force, clutch body 8 is connected axle 6 friction self-lockings with input, and input connects axle 6 rotates by clutch body 8 drive output overdrive clutch wheel hubs 7, thereby drives by the rotor rotation of actuating motor, behind certain value, closed in actuating motor 1 raising speed by the supply line of actuating motor.Owing to, thereby the impedance of stator coil is increased by the existing certain speed of the rotor of actuating motor, significantly reduced starting current, avoid the impact of starting current.After being incorporated into the power networks, by mains supply by actuating motor.Simultaneously reduction of speed is up to stopping under the control of Programmable Logic Controller 3 for actuating motor 1, and the output overdrive clutch wheel hub 7 of shaft joint 2 becomes drive end.Under the effect of being used to the power of giving birth to, clutch body 8 unclamps the contact that is connected axle 6 with input, makes output overdrive clutch wheel hub 7 connect axle 6 excess revolutions with respect to input.Thereby make by the actuating motor utonomous working, finish starting process.
The present invention uses the shaft joint of a starting motor of being made up of Programmable Logic Controller, controlled frequency conversion inverter and rare-earth permanent magnet rotor by unidirectional coupling function is arranged and is linked to each other by the rotor of actuating motor, use the program control in the Programmable Logic Controller, start by actuating motor by the raising speed of rare-earth permanent-magnet electric machine, just closed by the actuating motor input circuit behind the certain value by the actuating motor raising speed, rush of current when having significantly reduced starting, and reduced the starting time.Because the starting motor that uses is a rare-earth permanent magnet rotor motor, carry out synchronous operation by controlled frequency conversion inverter power supply, very big starting torque is arranged.
Actuating motor 1 among the present invention can be made up of " a kind of fully numerical-controlled electric towing " that as number of patent application be CN92100001, and general actuating motor power is by 1/10th to 1/50th of actuating motor rated power.Because rare-earth permanent magnet rotor motor can have high rotational speed, thereby can add a decelerator at motor output end, to increase starting torque.
The shaft joint 2 that plays unidirectional coupling among the present invention can be structure as shown in Figure 2, output overdrive clutch wheel hub 7 inner edges outside have the eccentric grove that equates with clutch body 8 numbers, the eccentric grove smallest end connects the diameter that axle 6 radiuses add clutch body 8 rollers apart from the size at wheel hub 7 centers less than input, and the size at the maximum end distance wheel hub of eccentric grove 7 centers should connect the roller diameter that axle 6 radiuses add clutch body 8 greater than input, the eccentric throw of eccentric grove should be not excessive, and the angle of wedge that should make eccentric grove is less than the friction self-locking angle.
The shaft joint 2 that plays unidirectional coupling among the present invention can be structure as shown in Figure 3, clutch body 8 uses friction pawl, friction pawl afterbody and output overdrive clutch wheel hub 7 are in axial hinge joint, in wheel hub 7, have the groove that holds friction pawl, friction pawl afterbody and output overdrive clutch wheel hub 7 should be connected axle 6 radiuses than contact less than input apart from the distance at wheel hub 7 centers and add the maximum radius of gyration of friction pawl, should add the radius of dodging of friction pawl simultaneously greater than input connection axle 6 radiuses.In this scope, size can increase transmission torque less than some, reduces structure stress.
The number of the clutch body 8 among the present invention can be 3, and 4 or more a plurality of, a plurality of clutch bodies can reduce the load on each clutch body.But because the increase of nonuniformity coefficient, number increases to 6 when above, and load reduces very little.
Claims (1)
1. the starting device of a large-size machine, it has actuating motor 1, shaft joint 2, it is characterized in that: actuating motor is a fully numerical-controlled electric towing, it includes rare-earth permanent magnet rotor motor 3, controlled frequency conversion inverter 4 and Programmable Logic Controller 5, the shaft joint 2 of rare-earth permanent magnet rotor motor 3 by unidirectional coupling function is arranged with linked to each other by actuating motor, shaft joint 2 connects axle 6 by input, output overdrive clutch wheel hub 7 and clutch body 8 are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105203 CN1049306C (en) | 1992-07-03 | 1992-07-03 | Starting device for large motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105203 CN1049306C (en) | 1992-07-03 | 1992-07-03 | Starting device for large motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1080793A CN1080793A (en) | 1994-01-12 |
| CN1049306C true CN1049306C (en) | 2000-02-09 |
Family
ID=4941223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105203 Expired - Fee Related CN1049306C (en) | 1992-07-03 | 1992-07-03 | Starting device for large motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049306C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790642B (en) * | 2016-05-05 | 2018-06-29 | 江苏华源防爆电机有限公司 | System is protected in motor clean boot |
-
1992
- 1992-07-03 CN CN 92105203 patent/CN1049306C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1080793A (en) | 1994-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1994026016A1 (en) | Multi-rotor a.c. electrodynamic device | |
| CN1049306C (en) | Starting device for large motor | |
| CN112018983B (en) | Permanent magnet auxiliary brushless alternating synchronous motor | |
| CN104767331B (en) | A kind of movable stator formula is from speed governing magneto | |
| CN210201679U (en) | Three-phase permanent magnet synchronous motor | |
| CN2125209U (en) | Device for starting big electric motor | |
| CN104767322B (en) | A kind of motor speed control device being controlled rotating speed by the adjustment magnetic line of force | |
| CN2393259Y (en) | Double-phase driven double-winding dc. brushless electric motor | |
| CN206575249U (en) | A kind of magnetic material grinding machine permanent magnet direct-drive structure | |
| JPH08298748A (en) | Motor apparatus | |
| CN107546912A (en) | A kind of compound four-quadrant motor speed regulation system of differential planet gear | |
| CN204237450U (en) | Hoisting crane translation driving device | |
| CN2204467Y (en) | Electric dynamic-modulating vibration motor | |
| CN112901732A (en) | Flexible motor and flexible starting method | |
| CN210839285U (en) | Motor with differential rotor structure | |
| CN102647051A (en) | Servo bending-moment electromotor | |
| CN2181768Y (en) | AC variable speed motor | |
| CN214756012U (en) | Birotor permanent magnet synchronous motor with auxiliary starting device | |
| WO2014016728A4 (en) | Induction motor-permanent magnet generator tandem configuration starter-generator for hybrid vehicles | |
| CN115967238B (en) | Direct current brushless motor with startup protection | |
| TWM580286U (en) | Motor apparatus | |
| EP4092888A1 (en) | An electric drive unit for a vehicle | |
| CN204597714U (en) | A kind of motor speed control device being controlled rotating speed by the adjustment magnetic line of force | |
| CN212774850U (en) | Fan and air conditioner driven by double motors | |
| CN214036175U (en) | Fan driving system and fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| 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 |