CN101794673A - Motor-driven operating mechanism with thermal protector - Google Patents
Motor-driven operating mechanism with thermal protector Download PDFInfo
- Publication number
- CN101794673A CN101794673A CN201010118019A CN201010118019A CN101794673A CN 101794673 A CN101794673 A CN 101794673A CN 201010118019 A CN201010118019 A CN 201010118019A CN 201010118019 A CN201010118019 A CN 201010118019A CN 101794673 A CN101794673 A CN 101794673A
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- Prior art keywords
- motor
- operating mechanism
- thermal protector
- circuit breaker
- rotor
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Abstract
The invention relates to a motor-driven operating mechanism, in particular to a motor-driven operating mechanism with a thermal protector. The technical scheme provided by the invention is as follows: the motor-driven operating mechanism comprises a motor installed in an installation shell, wherein the motor is provided with a stator and a rotor; the stator is provided with a stator coil; a speed reducer and a linkage are arranged in the installation shell; the speed reducer is provided with an output gear which is connected with a circuit breaker spindle; a cam is arranged on the circuit breaker spindle and is connected with the linkage; the output gear of the speed reducer is meshed with a rotor gear of the rotor; a spring is arranged in the installation shell; and the thermal protector is arranged on the stator coil and is connected with the stator coil circuit in series. The invention can effectively prevent overcurrent of the motor-driven operating mechanism caused by turn-to-turn short circuit, overload, long idling, locked rotor, etc.
Description
Technical field
The present invention relates to a kind of motor-operating mechanism, especially a kind of motor-operating mechanism with thermal protector.
Background technology
Motor-operating mechanism partly is widely used in various circuit breaker industries as the circuit breaker core drive, and its major function is that electric energy is converted into mechanical energy is that the closing of circuit breaker, separating brake (energy storage) provide power.In use generally adopt and burn out motor to avoid motor interior loop winding temperature to surpass permissible value with the shared overcurrent protective device of circuit breaker.In real work; size and the time control of shared overcurrent protective device during to the motor-operating mechanism overcurrent is relatively poor; because in most cases; the design of the overcurrent protective device of circuit breaker will be considered and its common other electric equipment that is equipped with such as the starting current of electromagnet, counter etc.; substantially exceed normal operating current in design; therefore; motor-operating mechanism does not have the better protect effect because of the overcurrent that turn-to-turn short circuit, overload, stall etc. cause, burns out motor-operating mechanism and circuit breaker easily and causes damage.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, thereby provide a kind of motor-operating mechanism that can effectively prevent because of turn-to-turn short circuit, overload, the overcurrent that causes such as idle running and stall causes that the motor-operating mechanism heating burns circuit breaker and can make the reliability of circuit breaker obtain the motor-operating mechanism of band thermal protector stable and easy to maintenance for a long time.
According to technical scheme provided by the invention; the motor-operating mechanism of described band thermal protector; be included in the motor of installing in the housing is installed; motor has motor stator and rotor; motor stator has stator coil; in being installed, housing is provided with decelerator and linkage; decelerator has output gear; output gear is connected with the circuit breaker main shaft, on the circuit breaker main shaft cam is installed, and cam is connected with linkage; the output gear of decelerator and the engagement of the rotor gear of rotor; in housing is installed spring is installed, thermal protector is installed on stator coil, described thermal protector is connected with stator coil circuit.
The present invention compared with prior art has following advantage:
1, the temperature of Cai Yonging (heat) protector overall dimensions are little, do not influence the overall dimension of former motor-operating mechanism, thereby saved the installing space of circuit breaker, the miniaturization of circuit breaker had the effect of key;
2, shock-resistant and vibration, the shock and vibration of circuit breaker do not have influence to its performance, and former circuit breaker is not increased performance requirement;
3, easy for installation, need not maintain, need only a nylon cable tie tie up on coil and get final product;
4, insensitive to instantaneous large-current, the normal starting of motor-operating mechanism there is not influence;
5, protecting device with traditional guarantor's heat compares and has double protection functions: can both auto power off when electric current and temperature are surpassed design load, and traditional guarantor's heat is protected device and only temperature is shielded;
6, can realize far distance controlled and circuit breaker intellectuality: to being installed in open air and pole-mounted circuit breaker, this motor-operating mechanism can automatically reset after circuit breaker damages, and need not repair, thereby save a large amount of artificial and expenses.
Description of drawings
Fig. 1 is one of overall structure stereogram of the present invention.
Fig. 2 is two of an overall structure stereogram of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure: the motor of in housing is installed, installing 7; motor 7 has motor stator 8 and rotor 1; motor stator 8 has stator coil 2; in being installed, housing is provided with decelerator 6 and linkage; decelerator 6 has output gear 5; output gear 5 is connected with circuit breaker main shaft 4; on the circuit breaker main shaft 4 cam is installed; cam is connected with linkage; the output gear 5 of decelerator 6 meshes with the rotor gear of rotor 1; in housing is installed spring 9 is installed, thermal protector 3 is installed on stator coil 2, described thermal protector 3 is connected with stator coil 2 circuit.
A series connection thermal protector 3 (being temperature protector) in the circuit of motor-operating mechanism, this thermal protector 3 is installed on the stator coil 2 of motor 7.When circuit breaker needs on/off switch, to the 7 part energized of the motor in the motor-operating mechanism, rotor 1 rotates in the magnetic that motor stator 8 produces changes, finish electric energy and be converted into mechanical energy this moment, mechanical energy is delivered to each gear of decelerator 6 by the gear on the rotor 1 (not shown), being delivered to circuit breaker main shaft 4, cam (not shown) and connecting rod (not shown) by the output gear on the decelerator 65 waits and compresses spring 9, finish the separating brake action, when spring 9 is released energy, finish the feed motion of circuit breaker.In this process, when stall appearred in the decelerator 6 of circuit breaker and motor-operating mechanism, stall, the phenomenon that dallies continuously appearred in motor 7, stator coil 2 temperature raise, when temperature surpassed thermal protector 3 set points, thermal protector 3 disconnected, and motor 7 can quit work automatically; When turn-to-turn short circuit, commutator (not shown) short circuit etc. appearred in stator coil 2, electric current was bigger than normal, when inner self temperature of thermal protector 3 surpasses set point; thermal protector 3 automatic disconnections; cut off motor 7 power supplys, thereby play protective effect, prevent that motor 7 from burning motor 7.Reduce to thermal protector 3 set points constantly when motor 7 temperature, thermal protector 3 can automatically reset, and motor 7 is resumed work.
Claims (1)
1. motor-operating mechanism with thermal protector; be included in the motor of installing in the housing (7) is installed; motor (7) has motor stator (8) and rotor (1); motor stator (8) has stator coil (2); in being installed, housing is provided with decelerator (6) and linkage; decelerator (6) has output gear (5); output gear (5) is connected with circuit breaker main shaft (4); the circuit breaker main shaft is equipped with cam on (4); cam is connected with linkage; the output gear (5) of decelerator (6) and the engagement of the rotor gear of rotor (1); in housing is installed, spring (9) is installed; it is characterized in that: thermal protector (3) is installed on stator coil (2), and described thermal protector (3) is connected with stator coil (2) circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118019A CN101794673A (en) | 2010-02-24 | 2010-02-24 | Motor-driven operating mechanism with thermal protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010118019A CN101794673A (en) | 2010-02-24 | 2010-02-24 | Motor-driven operating mechanism with thermal protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101794673A true CN101794673A (en) | 2010-08-04 |
Family
ID=42587284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010118019A Pending CN101794673A (en) | 2010-02-24 | 2010-02-24 | Motor-driven operating mechanism with thermal protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101794673A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938190A (en) * | 2010-09-09 | 2011-01-05 | 无锡市凯旋电机有限公司 | Motor specially used for miniature circuit breaker |
| CN102734347A (en) * | 2012-03-30 | 2012-10-17 | 李智奇 | Electromagnetic embedded clutch device with slotted shaft core |
| CN102779697A (en) * | 2012-07-16 | 2012-11-14 | 无锡市凯旋电机有限公司 | Electric operating mechanism with overcurrent safety device |
| CN110574133A (en) * | 2017-05-08 | 2019-12-13 | Abb瑞士股份有限公司 | Motor device of high-voltage switch equipment |
-
2010
- 2010-02-24 CN CN201010118019A patent/CN101794673A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938190A (en) * | 2010-09-09 | 2011-01-05 | 无锡市凯旋电机有限公司 | Motor specially used for miniature circuit breaker |
| CN102734347A (en) * | 2012-03-30 | 2012-10-17 | 李智奇 | Electromagnetic embedded clutch device with slotted shaft core |
| CN102779697A (en) * | 2012-07-16 | 2012-11-14 | 无锡市凯旋电机有限公司 | Electric operating mechanism with overcurrent safety device |
| CN102779697B (en) * | 2012-07-16 | 2015-10-07 | 无锡市凯旋电机有限公司 | A kind of motor-operating mechanism of tool overcurrent safety device |
| CN110574133A (en) * | 2017-05-08 | 2019-12-13 | Abb瑞士股份有限公司 | Motor device of high-voltage switch equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100804 |