CN201536333U - Brushless starting device for wound rotor asynchronous motor - Google Patents
Brushless starting device for wound rotor asynchronous motor Download PDFInfo
- Publication number
- CN201536333U CN201536333U CN2009201257281U CN200920125728U CN201536333U CN 201536333 U CN201536333 U CN 201536333U CN 2009201257281 U CN2009201257281 U CN 2009201257281U CN 200920125728 U CN200920125728 U CN 200920125728U CN 201536333 U CN201536333 U CN 201536333U
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- China
- Prior art keywords
- slip ring
- weight
- guide rod
- screw rod
- motor
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- Expired - Fee Related
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Abstract
The utility model discloses a brushless starting device for a wound rotor asynchronous motor. The brushless starting device mainly comprises a shaft collar (1), a hammer sleeve (2), a heavy hammer (4), a spring (3), a guide rod (5), a short-circuit guide rod (6), a movable contact (7), a fixed contact (8), a slip ring (9) and a slip ring bracket (17), wherein one side of the slip ring (9) close to a motor is connected with a rotor winding (16) while the other side thereof is connected with a three-phase frequency inducing coil (23); a silicon steel column (24) is fixedly connected with a telescopic screw rod (13); the telescopic screw rod (13) is mounted on a fixed link (20); one end of a rotating screw rod (12) is mounted on a reduction gearbox (11) while the other end thereof is meshed with the telescopic screw rod (13); a micromotor (10) is mounted on the reduction gearbox (11); and the reduction gearbox (11) and the fixed link (20) are both mounted on a frame (14). The brushless starting device for the wound rotor asynchronous motor can start the wound rotor asynchronous motor under the brushless conditions, is operated reliably, remarkably reduces the maintenance frequency of the motor, improves the production efficiency, and is suitable for wound rotor asynchronous motors.
Description
Technical field
The utility model relates to the device that is used for actuating motor, relates in particular to the starting device of brushless no external impedance.
Background technology
As everyone knows, the starting of large wound formula asynchronous motor generally takes external starting resistance to start, the winding of rotor all needs to be connected with outside starting resistance by slip ring and carbon brush, outside starting resistance generally has resistance, water resistance, three kinds of forms of frequency sensor, and every kind of form all needs start control system.Aforementioned starting device has following deficiency, and carbon brush and slip ring have CONTACT WITH FRICTION in running, and failure rate is higher; Control and resistance, water resistance, the sensor floor space is big frequently, and contact is many, and failure rate is higher.
Having of the art applications patent relevant: CN1073813 number " sound electromagnetic coupling method and device ", CN2368219 number " the brushless rheostatic starter of AC induction motor " etc. with brushless startup wound type asynchronous motor, these patented technologies all can realize the started with no brush of asynchronous motor, but people still constantly bring forth new ideas, design update, more effective wire wound asynchronous motor started with no brush device.
Summary of the invention
The purpose of this utility model provides a kind of wire wound asynchronous motor started with no brush device, and brushless, no external control of this device and resistance, water resistance, sensor frequently can overcome the deficiency of prior art.
The wire wound asynchronous motor started with no brush device that the designer provides mainly is made up of the axle collar, hammer cover and weight, spring, guide rod, short circuit guide rod, moving contact, fixed contact, slip ring, slip ring spider; Collar bush is interference fit on motor rotary shaft, symmetrically arranged hammer cover and weight are arranged on the outer circumference surface of the axle collar; Spring one end links to each other with the end face of weight, and the other end is connected with axle collar outer circumference surface; Hammer cover is for cylindrical, the one end margin opening that turns up, and other end end face has circular hole; On the end that weight is connected with spring screw is arranged; The threaded end of guide rod passes the circular hole that puts of hammer and is connected mutually with the screw of weight, and the other end has Connection Block, and guide rod and short circuit guide rod are connected by Connection Block; Be fixed with moving contact on the short circuit guide rod, the axis direction of moving contact is consistent with guide rod axis bearing of trend; One end of moving contact is opening-like opposed with end fixed contact, and the other end of fixed contact is fixed on the slip ring or with slip ring and makes one; Slip ring spider is arranged on the slip ring, and the bottom of slip ring spider is provided with insulating base, is connected on the outer circumference surface of the axle collar; Characteristics of the present utility model are that slip ring leans on motor side to be connected with the rotor winding, and opposite side is felt coil with frequency and is connected; Frequently feel the coil three-phase on a cylinder ring, an end of cylinder ring is installed on the motor shaft, and the hollow core portion of the other end is installed the silicon steel post; Silicon steel post and flexible screw rod are affixed, and flexible screw rod is installed on the fixed lever; Rotating screw bolt one end is installed on the reduction box, and the other end and flexible screw rod are meshing; Electrical micro-machine is installed on the reduction box, and reduction box and fixed lever are installed on the framework.
Above-mentioned weight is cylindrical, is matched in clearance with the hammer cover; The shape and the axle collar outer circumference surface shape of hammer cover openend are complementary.
The pulling force of above-mentioned spring is greater than the weight of weight.
Above-mentioned slip ring spider is 2 or 3.
Above-mentioned expansion bend is made up of electrical micro-machine, decelerator, screw rod rotating mechanism.
The operation principle of wire wound asynchronous motor started with no brush device is: before the electric motor starting, weight is subjected to the effect of spring force, and is close to the axle center, and by guide rod, the short circuit guide rod drives moving contact to be separated with fixed contact.Three phase windings of rotor link to each other with hollow frequency sensor coil, and the silicon steel post all extend in the hollow frequency sensor, hollow frequency sensor impedance this moment maximum.When motor began to start, electrical micro-machine got and electricly just changes, and the silicon steel post withdraws from the ring in the sensor frequently from hollow at leisure, withdraws from fully when motor reaches rated speed, and hollow sensor frequently withdraws from the impedance minimum because of hollow core portion because of the silicon steel post.In addition in motor starting process, the rotating speed of motor rotor is started from scratch progressively to be increased, when rotating speed was increased to certain value, the suffered centrifugal force of weight was greater than the pulling force of extension spring, and weight is to moving away from axis direction, and pass through guide rod, the short circuit guide rod drives moving contact and contacts with fixed contact, and when rotor speed reached the volume rotating speed, it is maximum that the suffered centrifugal force of weight reaches, moving contact is crimped on tightly motor rotor winding short circuit with fixed contact; So far finish whole starting process.After motor was shut down, weight did not have centrifugal action, all gets back to pre-start state.
Wire wound asynchronous motor started with no brush device of the present utility model can make the wire wound asynchronous motor starting under brushless condition, reliable, obviously reduces the maintenance frequency of motor, enhances productivity.Be applicable to wire wound asynchronous motor.
Description of drawings
Fig. 1 is the structural representation of device of the present utility model;
Fig. 2 is that Figure 1A-A is to the sectional structure schematic diagram; Fig. 3 is that the B-B that amplifies is to view.
The utility model is described in further detail below in conjunction with accompanying drawing.
Among the figure: the 1-axle collar, 2-hammers cover into shape, 3-extension spring, 4-weight, the 5-guide rod, 6-short circuit guide rod, 7-moving contact, 8-fixed contact, the 9-slip ring, 10-electrical micro-machine, 11-reduction box, 12-rotating screw bolt, the 13-screw rod that stretches, 14-framework, 15-rotating shaft, 16-rotor coil conducting wire, the 17-slip ring spider, 18-insulating base, 19-through wires hole, 20-fixed lever, through wires hole on the 21-axle, 22-slip ring, 23-three phase frequency sense coils, 24-silicon steel post.
Embodiment
Embodiment
As attached illustrated in figures 1 and 2, machine shaft 15 1 end outer circumference surfaces are provided with the axle collar 1 that is interference fit with this rotating shaft 15; On the outer circumference surface of the axle collar 1, be symmetrically arranged with the 1 pair one end margin round-meshed cylindrical hammer cover 2 of opening, other end end face that turns up, the cylindrical weight 4 and the end that are matched in clearance with this hammer cover link to each other the extension spring 3 that the other end is connected with the annulus outer circumference surface with the end face of weight 4.This weight overlaps 2 openend shapes and the axle collar 1 outer circumference surface shape is suitable, and the pulling force of extension spring 3 is greater than the weight of weight 4.Weight 4 is placed with screwed hole with respect to the other end that extension spring 3 connects with hammer cover 2 circular hole correspondence positions, the guide rod 5 that one end has a screw thread passes circular hole on the hammer cover 2 and the screwed hole of weight 4 is connected, the other end of guide rod 5 has being connected of Connection Block realization and short circuit guide rod 6, on the short circuit guide rod 6 at this position that is connected, be processed with screwed hole respectively and realize and being connected of moving contact 7, the axis direction of moving contact 7 is consistent with guide rod 5 axis bearing of trends, the outer end of moving contact 7 is the opening dress, and is corresponding with an end of fixed contact 8; The other end of fixed contact 8 is fixed on the slip ring 9, and perhaps fixed contact 8 is made an integral body with slip ring 9, and slip ring 9 is provided with 2～3 slip ring spiders 17, and the bottom of slip ring spider 17 is provided with insulating base 18 and realizes and being connected of the axle collar 1.Also be provided with through wires hole 19 on insulating base 18, rotor coil conducting wire 16 is connected with slip ring spider 17 through through wires hole.One side of slip ring 9 is connected with rotor winding 16, and opposite side is connected with three phase frequency sense coils 23.Silicon steel post 24 and flexible screw rod 13 are affixed, and flexible screw rod 13 is installed on the fixed lever 20.Rotating screw bolt 12 1 ends are installed on the reduction box 11, and the other end and flexible screw rod 13 are meshing.Electrical micro-machine 10 is installed on the reduction box 11, and reduction box 11 is installed on the framework 14 with fixed lever 20.
Claims (5)
1. wire wound asynchronous motor started with no brush device, it mainly is made up of with weight (4), spring (3), guide rod (5), short circuit guide rod (6), moving contact (7), fixed contact (8), slip ring (9), slip ring spider (17) the axle collar (1), hammer cover (2); The axle collar (1) is enclosed within on the motor rotary shaft (15) and is interference fit, and symmetrically arranged hammer cover (2) and weight (4) are arranged on the outer circumference surface of the axle collar (1); Spring (3) one ends link to each other with the end face of weight (4), and the other end is connected with the axle collar (1) outer circumference surface; Hammer cover (2) is cylindrical, the one end margin opening that turns up, and other end end face has circular hole; On weight (4) and the end that spring (3) is connected screw is arranged; The circular hole that the threaded end of guide rod (5) passes on the hammer cover (2) is connected mutually with the screw of weight (4), and the other end has Connection Block, and guide rod (5) is connected by Connection Block with short circuit guide rod (6); Be fixed with moving contact (7) on the short circuit guide rod (6), the axis direction of moving contact (7) is consistent with guide rod (5) axis bearing of trend; One end of moving contact (7) is opening-like opposed with end fixed contact (8), and the other end of fixed contact (8) is fixed on slip ring (9) and upward or with slip ring (9) makes one; It is characterized in that slip ring (9) is connected with rotor winding (16) by motor one side, opposite side is connected with three phase frequency sense coils (23); Silicon steel post (24) is affixed with flexible screw rod (13), and flexible screw rod 13 is installed on the fixed lever (20); Rotating screw bolt (12) one ends are installed on the reduction box (11), and the other end and flexible screw rod (13) are meshing; Electrical micro-machine (10) is installed on the reduction box (11), and reduction box (11) is installed on the framework (14) with fixed lever (20).
2. started with no brush device according to claim 1 is characterized in that described weight (4) for cylindrical, is matched in clearance with hammer cover (2); The shape and the axle collar (1) the outer circumference surface shape of hammer cover (2) openend are complementary.
3. started with no brush device according to claim 1 is characterized in that the weight of the pulling force of described spring (3) greater than weight (4).
4. started with no brush device according to claim 1 is characterized in that described slip ring spider (17) has 2 or 3.
5. started with no brush device according to claim 1 is characterized in that described expansion bend is made up of electrical micro-machine, decelerator, screw rod rotating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201257281U CN201536333U (en) | 2009-09-25 | 2009-09-25 | Brushless starting device for wound rotor asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201257281U CN201536333U (en) | 2009-09-25 | 2009-09-25 | Brushless starting device for wound rotor asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536333U true CN201536333U (en) | 2010-07-28 |
Family
ID=42536107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201257281U Expired - Fee Related CN201536333U (en) | 2009-09-25 | 2009-09-25 | Brushless starting device for wound rotor asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336490A (en) * | 2019-07-24 | 2019-10-15 | 江西联创光电科技股份有限公司 | A kind of drop magnetic starting device of direct supercurrent induction heating motor |
-
2009
- 2009-09-25 CN CN2009201257281U patent/CN201536333U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110336490A (en) * | 2019-07-24 | 2019-10-15 | 江西联创光电科技股份有限公司 | A kind of drop magnetic starting device of direct supercurrent induction heating motor |
| CN110336490B (en) * | 2019-07-24 | 2021-04-02 | 江西联创光电科技股份有限公司 | Magnetism reduction starting device of superconducting direct current induction heating motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20180925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |