CN204391989U - A kind of electrodeless variable resistance starting drive of motor - Google Patents
A kind of electrodeless variable resistance starting drive of motor Download PDFInfo
- Publication number
- CN204391989U CN204391989U CN201520146710.5U CN201520146710U CN204391989U CN 204391989 U CN204391989 U CN 204391989U CN 201520146710 U CN201520146710 U CN 201520146710U CN 204391989 U CN204391989 U CN 204391989U
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- Prior art keywords
- collar
- motor
- variable resistance
- short circuit
- electrodeless variable
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Abstract
The utility model relates to technical field of electricity, a kind of electrodeless variable resistance starting drive of motor is provided, comprise the collar be socketed with rotor, the short circuit ring, three slide resistors and three springs that arrange concentric on the collar, two terminals of slide resistor are fixedly connected with the collar with short circuit ring respectively, and three slide resistors are uniformly distributed, one end of three springs is fixed with the sliding end of a slide rheostat respectively and is electrically connected, spring is fixedly installed between short circuit ring and the collar away from one end of sliding end, and is electrically connected by the rotor windings of wire with electricity.The utility model can electrodeless variable resistance, ensure that the stable startup of motor, not only saves energy, and structure is simple, greatly reduces production cost and maintenance cost.
Description
Technical field
The utility model relates to technical field of electricity, is specifically related to a kind of electrodeless variable resistance starting drive of motor.
Background technology
The Starting mode of Wound-rotor type threephase asynchronous machine mainly contains two kinds, one in rotor loop, seals in resistance start, and which reduces starting current, in this Starting mode, during starting, whole resistance seals in rotor circuit, because resistance is constant, what starting resistance is divided into, excises step by step in start-up course, more level and smooth start-up course can be obtained, want to obtain starting characteristic more stably, must increase startup progression, this will make equipment complicated; Another kind adopts frequency sensitive trheostat to start, and its operation principle is equivalent to the stepless excision of resistance in start-up course, and startup can be made more steady, but still there is the problems such as starting current is large, energy consumption is high, maintenance workload is large, supply power voltage cannot start when reducing.Therefore, a kind of motor starting device that can solve the problem is needed badly.
Utility model content
The purpose of this utility model is the electrodeless variable resistance starting drive providing a kind of motor, to solve existing motor starting device complex structure, problem that energy consumption is high.
For reaching above-mentioned requirements, the technical scheme that the utility model is taked is: the electrodeless variable resistance starting drive providing a kind of motor, the electrodeless variable resistance starting drive of this motor comprises the collar be socketed with rotor, the short circuit ring that arrange concentric on the collar, three slide resistors and three springs, two terminals of slide resistor are fixedly connected with the collar with short circuit ring respectively, and three slide resistors are uniformly distributed, one end of three springs is fixed with the sliding end of a slide rheostat respectively and is electrically connected, spring is fixedly installed between short circuit ring and the collar away from one end of sliding end, and be electrically connected by the rotor windings of wire with electricity.
Further, the electrodeless variable resistance starting drive of motor also comprises the shell be connected with the collar, and shell is arranged with the collar is concentric, and the collar, short circuit ring, slide resistor and spring are all arranged in shell.
Further, shell is provided with three binding posts, three springs are fixedly installed on a binding post respectively away from one end of sliding end, and spring is electrically connected by binding post with wire.
Further, shell and the collar are insulating material.
Compared with prior art, the advantage that has of the electrodeless variable resistance starting drive of this motor is as follows:
(1) remove slip ring, carbon brush and brush box, and remove the element such as frequency sensitive trheostat, A.C. contactor, the time relay in secondary circuit system, reduce production cost and maintenance cost.
(2) on rotor windings, series resistance can increase rotor torque, reduces starting current, saves energy, and can electrodeless variable resistance, ensure that the stable operation of starter, ensure that the useful life of starter self while extending motor useful life.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present application, form a application's part, use identical reference number to represent same or analogous part in the drawings, the schematic description and description of the application, for explaining the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is scheme of installation of the present utility model;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is circuit connection diagram of the present utility model;
Wherein: 11, short circuit ring; 12, slide resistor; 13, wire; 14, sliding end; 15, spring; 16, binding post; 17, shell; 18, the collar; 2, motor; 21, rotor; 22, rotor windings; 23, stator winding.
Embodiment
For making the object of the application, technical scheme and advantage clearly, below in conjunction with drawings and the specific embodiments, the application is described in further detail.
According to an embodiment of the application, a kind of electrodeless variable resistance starting drive of motor is provided, as shown in Figure 1, 2, comprise be socketed with rotor 21 the collar 18, with the collar 18 concentric short circuit ring arranged 11, three identical slide resistors 12 and three identical springs 15, two terminals of slide resistor 12 are fixedly connected with the collar 18 with short circuit ring 11 respectively, and three slide resistors 12 are all arranged along short circuit ring 11 diametric(al), three slide resistors 12 are uniformly distributed, and namely the angle of every two slide resistor 12 extended lines is 120 °; One end of three springs 15 is fixed with the sliding end 14 of a slide rheostat 12 and is electrically connected respectively, spring 15 is fixedly installed between short circuit ring 11 and the collar 18 away from one end of sliding end 14, and be electrically connected with the rotor windings 22 of motor 2 by wire 13, each slide resistor 12 is connected with corresponding rotor windings 22.
According to an embodiment of the application; as shown in Figure 1; the electrodeless variable resistance starting drive of this motor also comprises the shell 17 be connected with the collar 18; and shell 17 is arranged with the collar 18 is concentric; the collar 18, short circuit ring 11, slide resistor 12 and spring 15 are all arranged in shell 17, and shell 17 can play the effect of proofing dust and protecting, and make whole starting drive become to be integrated; be more convenient for mobile, more attractive in appearance.
According to an embodiment of the application, as shown in Figure 1, the shell 17 of the electrodeless variable resistance starting drive of this motor is provided with three binding posts, 16, three springs 15 to be fixedly installed on respectively on a binding post 16 away from one end of sliding end 14, and is electrically connected by binding post 16 with wire 13.
According to an embodiment of the application, shell 17 and the collar 18 are insulating material.
Operation principle of the present utility model is: after the threephase stator winding 23 (each difference 120 degree of electrical degrees) of motor 2 passes into three-phase symmetrical alternating current, by generation rotating magnetic field, this rotating magnetic field cutting rotor winding 22, induced current is produced because rotor windings 22 is closed, induced current and rotating magnetic field interact and produce electromagnetic force, so rotor 21 just follows rotating magnetic field to rotate, and rotor 21 direction of rotation is identical with rotating magnetic field direction; Originally, sliding end 14 is positioned at the one end near the collar 18 on slide resistor 12, and after rotor 21 rotates, the sliding end 14 of slide resistor 12 slides towards short circuit ring 11 under the influence of centrifugal force, the descending stepless variable resistance of starting resistance, the torque of rotor 21 reduces gradually; When motor 2 reaches rated speed, resistance sliding end 14 just slides into the position be electrically connected with short circuit ring 11, and now slide resistor 12 is by short circuit, and the electrodeless variable resistance starting drive of this motor cuts out automatically.If motor 2 output load increase can cause rotor 21 rotating speed to reduce, when rotor 21 rotating speed is lower than critical whirling speed value, sliding end 14 can slide towards the collar 18 under the effect of spring 15, now slide resistor 12 is connected with rotor windings 22 again, larger torque is provided, makes rotor 21 reach rated speed.
The above embodiment only represents several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not be interpreted as the restriction to the utility model scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to the utility model protection range.Therefore protection range of the present utility model should be as the criterion with described claim.
Claims (4)
1. the electrodeless variable resistance starting drive of a motor, it is characterized in that: comprise the collar (18) be socketed with the rotor of motor (2) (21), the short circuit ring (11) that arrange concentric on the collar (18), three slide rheostats (12) and three springs (15), two terminals of described slide rheostat (12) are fixedly connected with the collar (18) with short circuit ring (11) respectively, and three slide rheostats (12) are uniformly distributed, one end of described three springs (15) is fixed with the sliding end (14) of a slide rheostat (12) and is electrically connected respectively, spring (15) is fixedly installed between short circuit ring (11) and the collar (18) away from one end of sliding end (14), and be electrically connected with the rotor windings (22) of motor (2) by wire (13).
2. the electrodeless variable resistance starting drive of motor according to claim 1, it is characterized in that: the electrodeless variable resistance starting drive of described motor also comprises the shell (17) be connected with the collar (18), and described shell (17) is arranged with the collar (18) is concentric, the described collar (18), short circuit ring (11), slide resistor (12) and spring (15) are all arranged in shell (17).
3. the electrodeless variable resistance starting drive of motor according to claim 2, it is characterized in that: described shell (17) is provided with three binding posts (16), described three springs (15) are fixedly installed on a binding post (16) respectively away from one end of sliding end (14), and spring (15) is electrically connected by binding post (16) with wire (13).
4. the electrodeless variable resistance starting drive of motor according to claim 2, is characterized in that: described shell (17) and the collar (18) are insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520146710.5U CN204391989U (en) | 2015-03-13 | 2015-03-13 | A kind of electrodeless variable resistance starting drive of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520146710.5U CN204391989U (en) | 2015-03-13 | 2015-03-13 | A kind of electrodeless variable resistance starting drive of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391989U true CN204391989U (en) | 2015-06-10 |
Family
ID=53364670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520146710.5U Expired - Fee Related CN204391989U (en) | 2015-03-13 | 2015-03-13 | A kind of electrodeless variable resistance starting drive of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391989U (en) |
Cited By (3)
| 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 |
| CN111672374A (en) * | 2020-06-18 | 2020-09-18 | 方茂霖 | Electrophoresis lacquer agitating unit at uniform velocity based on resistance is adjusted |
| CN112314198A (en) * | 2020-11-11 | 2021-02-05 | 厦门枫熙恋市政工程有限公司 | Straw rubbing crusher feed control mechanism is used in straw board processing |
-
2015
- 2015-03-13 CN CN201520146710.5U patent/CN204391989U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| CN111672374A (en) * | 2020-06-18 | 2020-09-18 | 方茂霖 | Electrophoresis lacquer agitating unit at uniform velocity based on resistance is adjusted |
| CN112314198A (en) * | 2020-11-11 | 2021-02-05 | 厦门枫熙恋市政工程有限公司 | Straw rubbing crusher feed control mechanism is used in straw board processing |
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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: 20150610 Termination date: 20210313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |