CN204046482U - A kind of novel alternating-current crane rotor thyristor speed setting controller - Google Patents
A kind of novel alternating-current crane rotor thyristor speed setting controller Download PDFInfo
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- CN204046482U CN204046482U CN201320553080.4U CN201320553080U CN204046482U CN 204046482 U CN204046482 U CN 204046482U CN 201320553080 U CN201320553080 U CN 201320553080U CN 204046482 U CN204046482 U CN 204046482U
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- control unit
- thyristor
- described control
- crane
- current
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Abstract
A kind of novel alternating-current crane rotor thyristor speed setting controller, it is made up of control unit and power cell, and both are fixed as one, completes electrical connection therebetween by connector; Described control unit is made up of polylith wiring board, display floater and base plate; Connector is adopted to connect between control board and base plate; Described power cell is made up of thyristor assembly, fan assembly, protective circuit assembly, fast acting fuse; Described control unit sealing, control board spray insulation anticorrosive coat; Described control unit and thyristor power unit adopt connector to be connected; Have high reliability, high security, antijamming capability strong, be simple and easy to by, the feature such as mechanism is reasonable, range of capacity is large, be suitable for requirement speed adjustable range wider, momentary speed variation is little, the crane hoisting mechanism, translation mechanism, slew gear, jib lubbing mechanism, multi-motor driving mechanism etc. of low cruise.Be specially adapted to crane for steelworks use requirement reliability high, pay no attention to the disconnected occasion run.
Description
Technical field
The utility model relates to a kind of speed regulating control apparatus, especially a kind of alternating-current crane rotor thyristor speed setting controller.
Background technology
Along with developing rapidly of China's industry, crane application is in the industry more and more extensive, also constantly improves the requirement of crane controller.Especially in energy-intensive today, adopt the crane controller of serial-resistance speed-regulation due to its inefficiency, progressively replace by the stator voltage controlling crane controller based on variable voltage control principle.There is a lot of producer can produce stator voltage controlling equipment at home, but their most of producer wherein adopts foreign technology, the profit of self is not high, and it is very large for the demand of crane speed regulation equipment on market, just under such power and pressure, some producers have been impelled to prepare independent research alternating-current crane rotor thyristor speed control device.
Summary of the invention
The utility model have employed advanced alternating-current crane rotor thyristor speed adjusting technique, there is provided a kind of and have the alternating-current crane rotor thyristor speed setting controller that high reliability, high security, antijamming capability are strong, be simple and easy to by, the feature such as rational in infrastructure, speed adjustable range is large, to seek, efficiency is high, the better governing system of performance.
The utility model solves the technical scheme that its technical problem adopts:
Alternating-current crane rotor thyristor speed setting controller is made up of control unit and power cell, and both are solidified as a whole, completes electrical connection therebetween by connector.Described control unit is made up of polylith wiring board, display floater and base plate.Power cell is made up of thyristor assembly, fan assembly, protective circuit assembly, fast acting fuse.Described control unit sealing, control board spray insulation anticorrosive coat, can be high temperature resistant, adapts to severe operational environment.Described control unit and thyristor power unit adopt connector to be connected, and are convenient to keep in repair dismounting.
Alternating-current crane rotor thyristor speed setting controller mechanism is compact, connection is reliable, and open brake after first setting up motor torque during starting, safety arrestment is guaranteed in multiple redundancy measure, has various faults self diagnosis and defencive function.
Alternating-current crane rotor thyristor speed setting controller adopts friendly man-machine interface to be full Chinese interface, display running status, display and record operation troubles.
Mechanical braking after first electric braking taked by alternating-current crane rotor thyristor speed setting controller, accurately controls mechanical braking time, both shortens braking time, and reduced again the wearing and tearing to brake.
Alternating-current crane rotor thyristor speed setting controller adopt rotor frequency feedback, be the most simply, the most reliable feedback method.
The input signal of alternating-current crane rotor thyristor speed setting controller isolates conversion by built in light electric isolution settling signal, outputs signal by Phototube Coupling power output signal.
Alternating-current crane rotor thyristor speed setting controller coordinates with master controller etc., for the starting of control and protection wound-rotor motor, speed governing, commutation and braking.Have high reliability, high security, antijamming capability strong, be simple and easy to by, the feature such as mechanism is reasonable, range of capacity is large, be suitable for requirement speed adjustable range wider, momentary speed variation is little, the crane hoisting mechanism, translation mechanism, slew gear, jib lubbing mechanism, multi-motor driving mechanism etc. of low cruise.Be specially adapted to crane for steelworks use requirement reliability high, the occasion of uninterrupted operation.
accompanying drawing illustrates:
Fig. 1 is the utility model speeds control schematic diagram
Fig. 2 is the utility model System Working Principle block diagram
In Fig. 1, K1 is power supply 1, K2 is power supply 2, NG is motor speed Setting signal, NF is motor speed feedback signal, F/V be frequency voltage conversion link as motor speed feedback signal, SA speed regulator, IG given value of current signal, IF current feedback signal, I/V be current-voltage conversion link as current feedback signal, IA be current regulator, MT is phase shift trigger.
embodiment:
Alternating-current crane rotor thyristor speed setting controller uses traditional mode of speed regulation to combine modern control method to control AC Asynchronous motor, specific as follows:
Rotor loop resistance device series thyristor, changes rotor current by the angle of flow controlling thyristor, thus changes the torque of motor, reaches the object controlling rotating speed.
As shown in Figure 1, be the utility model speeds control schematic diagram.When power supply 1K1 adhesive, motor exports forward torque, and during power supply 2K2 adhesive, motor exports opposing torque.After comparing with motor speed feedback signal NF from the motor speed Setting signal NG of master controller, Negotiation speed adjuster SA exports as given value of current signal IG, after given value of current signal IG compares with current feedback signal IF, as the input signal of current regulator IA.The angle of flow that speed regulator SA and current regulator IA forms rotating speed, current double closed-loop system controls thyristor by phase shift trigger MT, reaches and controls the object that rotating speed controls motor torque, also namely realize the control to motor speed.
When main order is placed in speed governing gear, motor is in closed-loop working state.When main order is placed in full gear, motor enters operate in open loop state state, two accelerating contactor actions when rotor frequency 25Hz and 12.5Hz respectively, is excised by two-stage rotor resistance respectively, and motor is accelerated at full speed.Within stator peak current when accelerator rotor resistance switches is limited in the twice of full-load current.When main order gets back to other gears from full gear, two accelerating contactors discharge at once, and resistance has been connected in series back major loop, and motor reenters closed-loop working state simultaneously.
As shown in Figure 2, be the utility model System Working Principle block diagram.The utility model system is by two groups of Energy control, and one is control power supply, and another is main circuit three phase mains.First, AC220V power supply is provided by control loop circuit breaker to control system after controlling power supply energising.The guard signal such as power supply is crossed from overcurrent relay by control circuit virtual protection cell protection.The main Setting signal that makes of alternating current 220V is converted to weak electric signal feeding CPU by the mode of input isolation by guidance panel, realizes the control of the actions such as elevating translational.
Secondly, after main circuit three power supply energisings, by circuit breaker for motor provides three-phase alternating-current supply.Be no more than the multiple of adjusting of rated current by overcurrent relay protection motor stator power supply, guard signal delivers to control circuit virtual protection unit.Simultaneously by 2 interfaces of stator phase commutation contactor, control their adhesive respectively, make motor have forward and reverse operation.Make the steady whereabouts of motor by Stopper contact device simultaneously.
Rotor contact device and rotor resistance are serially connected with in the rotor loop of motor, and the adhesive of contactor makes resistance carry out excising and cut-in operation.Current transformer is connected with rotor resistor with thyristor power unit, can change rotor current, and controlled trigger element of shifting to feeds back detection signal to CPU simultaneously.
Claims (1)
1. a novel alternating-current crane rotor thyristor speed setting controller, is characterized in that, it is made up of control unit and power cell, and both are solidified as a whole, completes electrical connection therebetween by connector; Described control unit is made up of polylith wiring board, display floater and base plate; Power cell is made up of thyristor assembly, fan assembly, protective circuit assembly, fast acting fuse; Described control unit sealing, control board spray insulation anticorrosive coat, can be high temperature resistant, adapts to severe operational environment; Described control unit and thyristor power unit adopt connector to be connected, and are convenient to keep in repair dismounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553080.4U CN204046482U (en) | 2013-09-06 | 2013-09-06 | A kind of novel alternating-current crane rotor thyristor speed setting controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553080.4U CN204046482U (en) | 2013-09-06 | 2013-09-06 | A kind of novel alternating-current crane rotor thyristor speed setting controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204046482U true CN204046482U (en) | 2014-12-24 |
Family
ID=52247103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320553080.4U Expired - Fee Related CN204046482U (en) | 2013-09-06 | 2013-09-06 | A kind of novel alternating-current crane rotor thyristor speed setting controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204046482U (en) |
-
2013
- 2013-09-06 CN CN201320553080.4U patent/CN204046482U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20150906 |
|
| EXPY | Termination of patent right or utility model |