CN107046351B - Soft start type asynchronous motor - Google Patents
Soft start type asynchronous motor Download PDFInfo
- Publication number
- CN107046351B CN107046351B CN201611165557.6A CN201611165557A CN107046351B CN 107046351 B CN107046351 B CN 107046351B CN 201611165557 A CN201611165557 A CN 201611165557A CN 107046351 B CN107046351 B CN 107046351B
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- CN
- China
- Prior art keywords
- soft starter
- end cover
- motor
- bearing
- gear ring
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/32—Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention relates to a soft start asynchronous motor, when the asynchronous motor starts, slip s is maximum, rotor electromotive force E is also maximum, starting current is large, starting torque is small, because electromagnetic torque depends on active components of rotor winding current, when the asynchronous motor starts, s=1, rotor leakage reactance is maximum, rotor side power factor is low, active components of rotor winding current are small when the asynchronous motor starts, starting current is large, leakage impedance voltage drop of a stator winding is increased, air gap magnetic flux of each pole is reduced, starting torque is reduced, and therefore heavy load starting equipment can only increase power of the motor to cause great electric energy waste. The soft start asynchronous motor perfectly solves the problems. The motor comprises a motor, a soft starter shell, a soft starter, a bearing and an end cover. The no-load starting and automatic loading can be realized, the power of a motor of heavy-load starting equipment is reduced by more than half, and the motor can be widely applied to oil fields, mines and steel; the power-saving operation of cement, paper making, chemical industry, pumps, fans and other equipment.
Description
Technical Field
The invention relates to a soft start asynchronous motor, which is a motor capable of being matched with a load and directly started with a heavy load, and belongs to the technical field of motors.
Background
The slip ratio s is maximum when the asynchronous motor is started, the rotor electromotive force E is also maximum, the starting current is large, the starting torque is smaller, because the electromagnetic torque depends on the active component of the rotor winding current, s=1 when the asynchronous motor is started, the rotor leakage reactance is maximum, the rotor side power factor is very low, the active component of the rotor winding current is very small when the asynchronous motor is started, the starting current is large, the leakage impedance voltage drop of the stator winding is increased, the air gap magnetic flux of each pole is reduced, and the starting torque is reduced, so that the heavy-load starting equipment can only increase the power of the motor to cause great electric energy waste.
Disclosure of Invention
The invention provides a soft start type asynchronous motor, which comprises a motor, a soft starter shell with flanges and rabbets at two ends, a soft starter, a bearing inner baffle cover, a bearing, an outer end cover and a bearing outer baffle cover.
The soft starter includes: active external gear ring (2), soft starter left end cover (3), soft starter passive inner gear ring (4), soft starter right end cover (5), key (6), motor shaft (7), soft starter left end cover bearing (8), soft starter right end cover bearing (19), soft starter shell with flange and spigot at both ends (9), driving meson (10), soft starter output shaft with connecting disk (11), bearing inner gear cover (12), bearing outer gear cover (13), end cover (14), soft starter output shaft bearing (15), fastening bolt (16), first snap spring (17), second snap spring (18)
The technical scheme adopted for solving the technical problems is as follows: 1. the asynchronous motor adopts a vertical and horizontal dual-purpose table base with a base, an output side with a flange and a spigot, and the motor shaft is lengthened. 2. The driving part of the soft starter, namely the driving outer gear ring, is rigidly connected with a motor shaft by a key, the driven part comprises a left end cover and an inner gear ring right end cover, the bearings (8) and (19) are in sliding connection with the motor shaft (7), the driving part of the soft starter and the driven part are in friction connection by virtue of the centrifugal force of a transmission meson, the friction is generated in the starting process, the normal running is free from friction, and the inner cavity of the soft starter, the driving part and the driven part and the transmission meson all adopt high-hardness high-wear-resistant materials, so that the soft starter is free from maintenance and long in service life. 3. The soft starter is arranged on a motor shaft, a soft starter shell with flanges and rabbets at two ends is connected with a motor flange, a bearing baffle cover and a bearing are arranged on an output shaft of the soft starter, an upper end cover and a bearing outer baffle cover are arranged, and all fastening bolts are arranged on the upper end cover and the bearing outer baffle cover, and then the transmission meson is arranged.
Principle of operation
When the motor is just started, the soft starter is in a separation state, an active outer gear ring rigidly connected with the motor dials the transmission meson to an outer circle, the transmission meson at the left end and the right end slides to the main by leaning on the inclined planes of the inner cavities of the left end cover and the right end cover, tooth grooves of the driven gear ring are formed, and the main gear ring and the driven gear ring can increase the fit degree of the transmission meson and increase the friction force. And as the rotational speed increases and the centrifugal force increases, a friction ring is formed between the driving outer gear ring and the driven inner gear ring by the driving meson, and when the friction force is larger than the load torque, the friction is stopped, and the load is driven. When the load is abnormal, the torque increases much or gets stuck, the soft starter can slip to protect the motor and load. The maximum output torque can be adjusted by adjusting the weight of the transmission meson, and the time of the soft start process can be adjusted by changing the angle of the inner inclined surface of the end cover.
The beneficial effects of the invention are as follows: 1. the power of the driving motor of the heavy-load starting equipment can be reduced by about half, the capacity of the power supply transformer is reduced by about half, and the power saving rate of any energy-saving motor with the highest power saving rate cannot be compared. 2. The excellent soft start performance can save the soft start control device of the electric appliance and save the investment.
Drawings
In the drawing, 1, a motor, 2, a soft starter driving outer gear ring, 3, a soft starter left end cover, 4, a soft starter driven inner gear ring, 5, a soft starter right end cover, 6, a key, 7, a motor shaft, 8.19, bearings of the soft starter left and right end covers, 9, a soft starter shell with flanges and spigots at two ends, 10, a driving meson, 11, a soft starter output shaft with a receiving disc, 12, a bearing inner gear cover, 13, a bearing outer gear cover, 14, an outer end cover, 15, a soft starter output shaft bearing, 16, a fastening bolt, 17, a first clamping spring and 18, a second clamping spring.
Detailed Description
The invention is further described below with reference to the accompanying drawings: according to the specification, a bearing (8) is arranged on a left end cover of the soft starter, the left end cover of the soft starter is arranged on a motor shaft (7), a first clamping spring (17) is arranged on the motor shaft (7), an active outer gear ring and a key (6) of the soft starter are arranged on the motor shaft (7), a second clamping spring (18) is arranged, a passive inner gear ring (4) of the soft starter is arranged on a spigot of the left end cover (3) of the soft starter, a bearing 19 is arranged on a right end cover (5) and the right end cover (5) are arranged on the motor shaft (7), the left end cover (3), the passive inner gear ring (4) of the soft starter and the right end cover (5) are fastened by bolts, a soft starter output shaft (11) with a connecting disc is arranged on the spigot of the right end cover (5) of the soft starter, bolts are fastened, and a baffle cover (12) and a bearing (15) are arranged on the soft starter output shaft (11) with the connecting disc. And loading the soft starter shell with flanges and rabbets at two ends into the motor flange, and tightening the bolts. The outer end cover (14) is arranged in the spigot of the soft starter shell with flanges and spigots at the two ends, the bolts are tightened, the bearing outer baffle cover is arranged, and the bearing inner baffle cover and the outer baffle cover are fastened by the bolts.
Claims (1)
1. The soft start asynchronous motor comprises a motor (1), a soft starter shell with a method and a spigot at two ends, a soft starter, a bearing inner baffle cover, a bearing, an end cover and a bearing outer baffle cover, and is characterized in that: the soft starter comprises a soft starter driving outer gear ring (2), a soft starter left end cover (3), a soft starter driven inner gear ring (4), a soft starter right end cover (5), a key (6), a motor shaft (7), a soft starter left end cover bearing (8), a soft starter shell (9) with flanges and rabbets at two ends of a soft starter right end cover bearing (19), a transmission meson (10), a soft starter output shaft (11) with a connecting disc, a bearing inner gear cover (12), a bearing outer gear cover (13), an end cover (14), a soft starter output shaft bearing (15), a fastening bolt (16), a first snap spring (17), a second snap spring (18), a soft starter left end cover bearing (8) is arranged on the soft starter left end cover (3), the first snap spring (17) is arranged on the motor shaft (7), the soft starter driving outer gear ring (2) and the key (6) are arranged on the motor shaft (7), the second snap spring (18) is arranged on the motor shaft (7), the passive inner gear ring (4) is arranged on the motor shaft (4), the right end cover (5) is arranged on the soft starter right end cover (5), fastening a left end cover (3) of the soft starter, a passive inner gear ring (4) of the soft starter and a right end cover (5) of the soft starter by bolts, loading an output shaft (11) of the soft starter with a connecting disc into a spigot of the right end cover (5) of the soft starter, fastening bolts, and loading an inner baffle cover (12) of a bearing and a bearing (15) on the output shaft (11) of the soft starter with the connecting disc; loading a soft starter shell with flanges and rabbets at two ends into a motor flange, and tightening bolts;
the outer end cover (14) is arranged at the spigot of the soft starter shell with flanges and spigots at the two ends, the bolts are tightened, the bearing outer baffle cover is arranged, the bearing inner baffle cover and the outer baffle cover are fastened by the bolts, the transmission meson is arranged, when the motor is just started, the soft starter is in a separated state, the transmission meson is pulled to an outer circle by the driving outer gear ring which is rigidly connected with the motor, the transmission meson at the left end and the right end slides to the main by the inclined planes of the inner cavities of the left end cover and the right end cover, the tooth grooves of the driven gear ring, the driving gear ring and the driven gear ring can increase the fit degree of the transmission meson to increase the friction force, the friction force is increased along with the increase of the rotating speed, at the moment, the transmission meson forms a friction ring between the driving outer gear ring and the driven gear ring, when the friction force is larger than the load torque, the load is abnormal, the torque is increased greatly or is blocked, the soft starter can slip to protect the motor and the load, the maximum output torque can be adjusted by adjusting the weight of the transmission meson, the angle of the inner inclined planes of the end cover is changed, and the time of the soft starting process can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165557.6A CN107046351B (en) | 2016-12-07 | 2016-12-07 | Soft start type asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611165557.6A CN107046351B (en) | 2016-12-07 | 2016-12-07 | Soft start type asynchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107046351A CN107046351A (en) | 2017-08-15 |
| CN107046351B true CN107046351B (en) | 2023-08-25 |
Family
ID=59543094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611165557.6A Active CN107046351B (en) | 2016-12-07 | 2016-12-07 | Soft start type asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107046351B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540575A (en) * | 2009-04-09 | 2009-09-23 | 北京新宇航世纪科技有限公司 | Flexible starting motor |
| CA2714239A1 (en) * | 2009-09-02 | 2011-03-02 | Carlo Gavazzi Services Ag. | Softstarter device and method to control the softstarting of an electric motor |
| CN103051106A (en) * | 2013-01-21 | 2013-04-17 | 汪永海 | Flexible starting motor |
| CN103490553A (en) * | 2013-09-17 | 2014-01-01 | 湖南人文科技学院 | Elastic resistance mechanical braking high-power soft-start device |
| CN205039723U (en) * | 2015-07-20 | 2016-02-17 | 贺业开 | Beam -pumping unit soft start economize on electricity running device |
| CN106160582A (en) * | 2016-08-30 | 2016-11-23 | 魏稼丰 | The centrifugal soft initiator of precompressed enhancement mode |
-
2016
- 2016-12-07 CN CN201611165557.6A patent/CN107046351B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540575A (en) * | 2009-04-09 | 2009-09-23 | 北京新宇航世纪科技有限公司 | Flexible starting motor |
| CA2714239A1 (en) * | 2009-09-02 | 2011-03-02 | Carlo Gavazzi Services Ag. | Softstarter device and method to control the softstarting of an electric motor |
| CN103051106A (en) * | 2013-01-21 | 2013-04-17 | 汪永海 | Flexible starting motor |
| CN103490553A (en) * | 2013-09-17 | 2014-01-01 | 湖南人文科技学院 | Elastic resistance mechanical braking high-power soft-start device |
| CN205039723U (en) * | 2015-07-20 | 2016-02-17 | 贺业开 | Beam -pumping unit soft start economize on electricity running device |
| CN106160582A (en) * | 2016-08-30 | 2016-11-23 | 魏稼丰 | The centrifugal soft initiator of precompressed enhancement mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107046351A (en) | 2017-08-15 |
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