CN201733271U - Three-phase electromotor brake - Google Patents
Three-phase electromotor brake Download PDFInfo
- Publication number
- CN201733271U CN201733271U CN2010202729687U CN201020272968U CN201733271U CN 201733271 U CN201733271 U CN 201733271U CN 2010202729687 U CN2010202729687 U CN 2010202729687U CN 201020272968 U CN201020272968 U CN 201020272968U CN 201733271 U CN201733271 U CN 201733271U
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- China
- Prior art keywords
- brake
- input terminal
- alternating current
- electromotor
- phase
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a three-phase electromotor brake, which is a device achieving braking of three-phase alternating current electromotor through inputting direct current to build static magnetic fields, and mainly comprises a rectifier bridge circuit, wherein the outer portion of the rectifier bridge circuit is connected with a brake current output terminal and an alternating current input terminal. The three-phase electromotor brake is characterized in that the alternating current input terminal is connected with a trigger board which is used to control two-way controlled silicon through a synchronizing transformer, the outer portion of the trigger board is connected with a brake signal input terminal, the two-way controlled silicon is connected between a rectifier circuit and the alternating current input terminal. The three-phase electromotor brake electronically adjusts voltage through changing a conduction angle of the two-way controlled silicon, and outputs direct current for braking after rectifying, thereby implementing braking of an electromotor, and achieving no-abrasion and accuracy control when the electromotor brakes. The structure is simple, the use is convenient, and the practicability is strong.
Description
Technical field
The utility model belongs to the motor brake, particularly a kind of device of setting up the brake of stationary magnetic field realization three-phase alternating-current motor by the direct current input.
Background technology
Three-phase alternating-current motor electronics brake is the motor feeding direct current to rotation, sets up static magnetic field and makes electrical motors arrive the purpose of brake in motor interior.Three-phase alternating-current motor mainly contains two kinds with the electronics brake at present: a kind of is to adopt high-power transformer that 220V or 380V alternating current are changed to 60V, and applied voltage when adjusting the motor brake with high-power current potential device is again with power supply motivation brake after its rectification.The brake structural volume of this kind structure is big, weight is big, and braking effect is poor simultaneously.Another kind is the structure that adopts three phase rectifier, capacitor filtering, Single-chip Controlling IGBT high power module.The brake braking effect of this kind structure is good, but uses the probability that element is many, cost is high, break down big.
Summary of the invention
The purpose of this utility model is to provide a kind of threephase motor brake of electronic pressure regulating.
The utility model is achieved in that
The threephase motor brake, mainly comprise rectifier circuit, the external brake current output terminal of the output of rectifier circuit, input external AC input terminal, it is characterized in that: described alternating current input terminal also connects an adjustable silicon trigger board by synchrotrans, this trigger board connects a bidirectional triode thyristor by holding wire, and this bidirectional triode thyristor is connected between rectification circuit and the alternating current input terminal; Described trigger board is circumscribed with the brake signal input terminal.
After the utility model adopts said structure, carry out electronic pressure regulating by the angle of flow that changes bidirectional triode thyristor, directly 220V or 380V alternating current are adjusted to required voltage, output threephase motor brake direct current after the rectification, motor is implemented brake, realize nothing wearing and tearing and the accurately control of motor when brake.Have simple in structure, easy to use, practical effect, low, the long service life of cost can be widely used in various three-phase alternating-current motors.
Description of drawings
Accompanying drawing is a kind of structural representation of the present utility model.
In the accompanying drawing, 1 is that trigger board, 2 is that synchrotrans, 3 are that bidirectional triode thyristor, 4 is that rectifier circuit, 5 is that alternating current input terminal, 6 is that brake signal input terminal, 7 is current output terminal that brakes.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
As shown in drawings, the utility model is a kind of electronic pressure regulating formula three-phase alternating-current motor brake, alternating current input terminal 5 connects the input of rectifier circuit 4 by the bidirectional triode thyristor 3 of series connection, the external brake current output terminal of the output of rectifier circuit 47, brake current output terminal 7 external threephase motors.Described alternating current input terminal 5 also connects an adjustable silicon trigger board 1 by synchrotrans 2, and this trigger board 1 is controlled described bidirectional triode thyristor 3 by holding wire; This trigger board 1 also is circumscribed with brake signal input terminal 6.Described bidirectional triode thyristor 3 is used for pressure regulation by changing the angle of flow, and bidirectional triode thyristor 3 is parallel with resistance, electric capacity, realizes the resistance-capacitance protection of bidirectional triode thyristor 3.
The utility model is arranged in the support housing of being made up of the base and the body of backing up, and synchrotrans 2, rectifier circuit 4, bidirectional triode thyristor 3 are arranged on the base, and trigger board 1 is arranged on props up on the body of backing up.
During use, alternating current input terminal 5 external 220V or 380V alternating current, after brake signal input terminal 6 receives the switch brake signal, synchrotrans 2 provide synchronous 60V voltage for trigger board 1, are triggered for bidirectional triode thyristor 3 provides lock-out pulse by trigger board 1, change the angle of flow of bidirectional triode thyristor 3, the alternating voltage of output regulation, be rectified into pulse direct current by rectifier circuit 4 again, export motor to by brake current output terminal 7 at last, make motor brake and realize brake.
Claims (2)
1. threephase motor brake, mainly comprise rectifier circuit (4), the external brake current output terminal of output (7) of rectifier circuit (4), input external AC input terminal (5), it is characterized in that: described alternating current input terminal (5) also connects an adjustable silicon trigger board (1) by synchrotrans (2), this trigger board (1) connects a bidirectional triode thyristor (3) by holding wire, and this bidirectional triode thyristor (3) is connected between rectification circuit and the alternating current input terminal (5); Described trigger board (1) is circumscribed with brake signal input terminal (6).
2. threephase motor brake according to claim 1 is characterized in that: described bidirectional triode thyristor (3) is parallel with resistance-capacitance protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202729687U CN201733271U (en) | 2010-07-23 | 2010-07-23 | Three-phase electromotor brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202729687U CN201733271U (en) | 2010-07-23 | 2010-07-23 | Three-phase electromotor brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733271U true CN201733271U (en) | 2011-02-02 |
Family
ID=43524427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202729687U Expired - Fee Related CN201733271U (en) | 2010-07-23 | 2010-07-23 | Three-phase electromotor brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733271U (en) |
-
2010
- 2010-07-23 CN CN2010202729687U patent/CN201733271U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20110723 |