CN202121451U - Separately excited brake adjustable series machine - Google Patents
Separately excited brake adjustable series machine Download PDFInfo
- Publication number
- CN202121451U CN202121451U CN2011202493166U CN201120249316U CN202121451U CN 202121451 U CN202121451 U CN 202121451U CN 2011202493166 U CN2011202493166 U CN 2011202493166U CN 201120249316 U CN201120249316 U CN 201120249316U CN 202121451 U CN202121451 U CN 202121451U
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Abstract
The utility model discloses a separately excited brake adjustable series machine which includes a series-excited motor and a switch device which is connected with a single-phase power supply. The series-excited motor is serially connected with the switch device to form a working circuit of the series machine. The separately excited brake adjustable series machine also includes an excitation module and a brake resistor module. The excitation module loads a rising voltage to a stator coil of the series-excited motor to generate a magnetic field when the series machine is in a stopped state. The brake resistor module is connected in parallel with a rotor coil of the series-excited motor to form a brake circuit via the switch device. The rotor coil cuts the magnetic lines of the magnetic field under the rotor inertia effect to generate a reverse electromotive force in the brake circuit for the braking of the rotor. Through adjusting the resistance of a braking resistor and the excitation voltage, the braking time can be conveniently controlled so as to acquire the optimal braking state. The adjustment is convenient, and the impact spark is inhibited, so the security and the service lifetime are increased. Besides, a brake pair circuit in a conventional structure is saved, so the cost is reduced, and the manufacturability is improved.
Description
Technical field
The utility model relates to series excited machine, and especially a kind of separated exciting that is applied on the electric tool is braked adjustable series excited machine.
Background technology
Series excited machine is widely used in each type electric tool such as bench saw, electric drill, scroll saw, electric wrench, and is light because of it, volume is little, with the single-phase electricity power supply, is particluarly suitable for using on the compact electric apparatus.
Existing electric tool brake mainly contains mechanical braking and deceleration of electrons, and stator secondary coil plugging is generally adopted in deceleration of electrons.As shown in Figure 1: when circuit is connected, major loop 01 work; When circuit breaks off, subloop 02 brake.Its shortcoming is: working condition measurement is difficult to pass through, and shock spark is big, and brake function lost efficacy easily, and there is big defective in the life-span; Stator processing technology difficulty is big, and work efficiency is slow, and quality is difficult to control; The enamelled wire consumption increases, and to associated components such as carbon brush, brush carrier, commutators the certain mass requirement will be arranged, and cost improves; Inhomogeneous with a collection of product brake speed, can not regulate.
Summary of the invention
The utility model problem to be solved just provides a kind of separated exciting and brakes adjustable series excited machine, improves processing technology, save production cost, and control brake time easily, with the best braking state of acquisition instrument.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of separated exciting is braked adjustable series excited machine; Comprise series excitation type motor and the switching device that is connected with single phase poaer supply; Said series excitation type motor is connected with switching device and is constituted the work loop of series excited machine; It is characterized in that: also comprise excitation module and brake resistance module, said excitation module loads the voltage that edges up to the stator coil of series excitation type motor under the series excited machine stopped status makes it produce magnetic field, and said brake resistance module is connected in parallel on through switching device on the rotor coil of series excitation type motor and forms brake circuit; Rotor coil cuts magnetic field magnetic line and makes in the brake circuit and to produce inverse electromotive force and be used for the rotor braking under rotor inertia operation effect.
Further, said excitation module comprise the reset circuit that is connected with rotor coil, by reset circuit trigger the control circuit that starts, by the thyristor and the supply module of control circuit triggering and conducting.
Further, also be connected with rectifier diode and current foldback circuit between said thyristor and supply module.
Further, said brake resistance module comprises brake resistance and is connected in parallel on the light-emitting component on the brake resistance.
Further, said brake resistance adopts slide rheostat.Change the resistance of slide rheostat self through the position of moving slide plate on the rheostat, to realize the adjusting of braking time.
Further, said brake resistance is to be connected the fixed resistance in the brake circuit with the activity inserting mode.Mode to change different resistance fixed resistances changes braking time.
Further, also be connected with soft starting circuit in the said work loop.
The beneficial effect of the utility model: series excited machine cuts off the power supply moment, is stopped at short notice by high rotating speed, and impulsive force is very big; Reverse potential abrupt release, energy impact are also very big, and it is a key issue that spark suppresses; Therefore, braking will be selected a best operating point, avoids peak current; Naturally discharge the back brake by energy moment, this is with regard to once-existing delay problem, and needs controlled by customization one dedicated module.The utility model adopts excitation module to combine series excitation type motor with the brake resistance module; Under the series excited machine stopped status; Be transformed into generator to series excitation type motor; On stator coil, produce magnetic field through excitation module, utilize rotor inertia to rotate and make its cutting magnetic field magnetic line of force generation back electromotive force make the rotor braking.Through adjustment brake resistance resistance and exciting voltage, control brake time easily just is with acquisition instrument the best braking state; Not only easy to adjust; Suppress shock spark, improved fail safe and useful life, and saved the brake subloop in the existing conventional structure; Practice thrift cost, improved processing technology.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is existing series excitation type electric tool brake principle schematic;
Fig. 2 is the electrical block diagram of the utility model.
Embodiment
With reference to Fig. 2; A kind of separated exciting of the utility model is braked adjustable series excited machine; The switching device 2 that comprises series excitation type motor and be connected with single phase poaer supply; Said series excitation type motor is connected with switching device 2 and is constituted the work loop of series excited machine; Also comprise excitation module 4 and brake resistance module 5, said excitation module 4 loads the voltage that edges up to the stator coil 3 of series excitation type motor under the series excited machine stopped status makes it produce magnetic field, and said brake resistance module 5 is connected in parallel on through switching device 2 on the rotor coil 1 of series excitation type motor and forms brake circuit; Rotor coil 1 cuts magnetic field magnetic line and makes in the brake circuit and to produce inverse electromotive force and be used for the rotor braking under rotor inertia operation effect.
Excitation module 4 comprise the reset circuit 41 that is connected with rotor coil 1, by reset circuit 41 trigger the control circuit 42 that starts, by the thyristor V and the supply module 44 of control circuit 42 triggering and conducting.44 of thyristor V and supply modules also are connected with rectifier diode D and current foldback circuit 43.Brake resistance module 5 comprises brake resistance R and is connected in parallel on the light-emitting component 51 on the brake resistance R; Brake resistance R wherein adopts slide rheostat usually; Change the resistance of slide rheostat self through the position of moving slide plate on the rheostat, to realize the adjusting of braking time; Brake resistance R is connected the fixed resistance in the brake circuit with the activity inserting mode, changes braking time through the mode of changing different resistance fixed resistances; Light-emitting component 51 can be common lamp pearl or light-emitting diode.In the work loop, also be provided with soft starting circuit 6, guarantee that there is not impact torque in the overall process of electric motor starting, but level and smooth startup operation.
Braking principle: press switching device 2, contact K1, K2 connect, and electric current is through soft starting circuit, rotor coil 1, stator coil 3 formation loops, series excited machine work.
When rotor stops operating fully, the input of signal triggering pin no signal, reset circuit 41 resets, and control circuit 42 quits work, and controllable silicon ends, and the magnetic field on the stator coil 3 disappears, and treats next electric motor starting.
Through adjustment brake resistance R resistance and exciting voltage, control brake time easily just is with acquisition instrument the best braking state.
Except that above-mentioned preferred embodiment; The utility model also has other execution mode; Those skilled in the art can make various changes and distortion according to the utility model, only otherwise break away from the spirit of the utility model, all should belong to the defined scope of the utility model accompanying claims.
Claims (7)
1. a separated exciting is braked adjustable series excited machine; The switching device that comprises series excitation type motor and be connected (2) with single phase poaer supply; Said series excitation type motor is connected with switching device (2) and is constituted the work loop of series excited machine; It is characterized in that: also comprise excitation module (4) and brake resistance module (5); Said excitation module (4) loads the voltage that edges up to the stator coil (3) of series excitation type motor under the series excited machine stopped status makes it produce magnetic field, and said brake resistance module (5) goes up the formation brake circuit through the rotor coil (1) that switching device (2) is connected in parallel on series excitation type motor; Rotor coil (1) cuts magnetic field magnetic line and makes in the brake circuit and to produce inverse electromotive force and be used for the rotor braking under rotor inertia operation effect.
2. a kind of separated exciting according to claim 1 is braked adjustable series excited machine, it is characterized in that: said excitation module (4) comprise the reset circuit (41) that is connected with rotor coil (1), by reset circuit (41) trigger the control circuit (42) that starts, by the thyristor (V) and the supply module (44) of control circuit (42) triggering and conducting.
3. a kind of separated exciting according to claim 2 is braked adjustable series excited machine, it is characterized in that: also be connected with rectifier diode (D) and current foldback circuit (43) between said thyristor (V) and supply module (44).
4. a kind of separated exciting according to claim 1 and 2 is braked adjustable series excited machine, it is characterized in that: said brake resistance module (5) comprises brake resistance (R) and is connected in parallel on the light-emitting component (51) on the brake resistance (R).
5. a kind of separated exciting according to claim 4 is braked adjustable series excited machine, it is characterized in that: said brake resistance (R) adopts slide rheostat.
6. a kind of separated exciting according to claim 4 is braked adjustable series excited machine, it is characterized in that: said brake resistance (R) is to be connected the fixed resistance in the brake circuit with the activity inserting mode.
7. a kind of separated exciting according to claim 1 and 2 is braked adjustable series excited machine, it is characterized in that: also be connected with soft starting circuit (6) in the said work loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202493166U CN202121451U (en) | 2011-07-14 | 2011-07-14 | Separately excited brake adjustable series machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202493166U CN202121451U (en) | 2011-07-14 | 2011-07-14 | Separately excited brake adjustable series machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202121451U true CN202121451U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202493166U Expired - Fee Related CN202121451U (en) | 2011-07-14 | 2011-07-14 | Separately excited brake adjustable series machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202121451U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518717A (en) * | 2015-01-06 | 2015-04-15 | 沈阳辽通电气有限公司 | Direct current speed regulator of series-excited motor |
| CN104779844A (en) * | 2015-04-08 | 2015-07-15 | 中国西电电气股份有限公司 | Braking circuit of universal motor |
| CN106026791A (en) * | 2016-06-30 | 2016-10-12 | 冼毅 | Short-circuit brake control method |
| CN110265248A (en) * | 2019-07-18 | 2019-09-20 | 科都电气有限公司 | The commutation brake gear and direct current electric power tools switch of direct current electric power tools switch |
-
2011
- 2011-07-14 CN CN2011202493166U patent/CN202121451U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518717A (en) * | 2015-01-06 | 2015-04-15 | 沈阳辽通电气有限公司 | Direct current speed regulator of series-excited motor |
| CN104779844A (en) * | 2015-04-08 | 2015-07-15 | 中国西电电气股份有限公司 | Braking circuit of universal motor |
| CN106026791A (en) * | 2016-06-30 | 2016-10-12 | 冼毅 | Short-circuit brake control method |
| CN110265248A (en) * | 2019-07-18 | 2019-09-20 | 科都电气有限公司 | The commutation brake gear and direct current electric power tools switch of direct current electric power tools switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG BEICHEN ELECTRIC MOTORS MANUFACTURING CO. Free format text: FORMER OWNER: HUANGGUAN ELECTRIC TOOL MANUFACTURING CO., LTD., ZHEJIANG Effective date: 20120424 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120424 Address after: 321017 No. 636, nine Feng street, Jinhua Industrial Park, Zhejiang, China Patentee after: Zhejiang Beichen Electric Motor Manufacture Co., Ltd. Address before: 321017 No. 636, nine Feng street, Jinhua Industrial Park, Zhejiang, China Patentee before: Zhejiang Crown Electric Tools Manufacture Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20180714 |