CN207986533U - A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor - Google Patents
A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor Download PDFInfo
- Publication number
- CN207986533U CN207986533U CN201721419670.2U CN201721419670U CN207986533U CN 207986533 U CN207986533 U CN 207986533U CN 201721419670 U CN201721419670 U CN 201721419670U CN 207986533 U CN207986533 U CN 207986533U
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- CN
- China
- Prior art keywords
- contactor
- dynamic braking
- hoisting motor
- control circuit
- pressure regulator
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- 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.)
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Abstract
The utility model provides a kind of crane pair hoisting motor simply adjustable dynamic braking control circuit, including secondary hoisting motor, resistor, conversing contactor, cut resistance contactor, secondary hoisting motor stator winding connects main power source by conversing contactor, rotor windings connect resistor terminations terminals, and resistance contactor is cut in the intermediate connection end connection of resistor.Further include the energy-dissipating brake circuit being connected between main power source and secondary hoisting motor stator winding terminals, the energy-dissipating brake circuit includes dynamic braking contactor one, pressure regulator, transformer, dynamic braking contactor two and rectifier bridge.The pressure regulation of small voltage range is carried out using simple pressure regulator, simultaneously step-down transformer is connected in output voltage regulator, the voltage that pressure regulator exports is reduced to the voltage that dynamic braking uses again, to improve carrying load ability, it solves the problems, such as that pressure regulator is unable to low-voltage directly band heavy load, while also meeting the pressure regulation requirement in dynamic braking circuit.
Description
Technical field
The utility model is related to crane technical field of electric control, more particularly to a kind of crane pair hoisting motor is simple
Adjustable dynamic braking control circuit.
Background technology
Goliath has been generally designed main hoisting mechanism and auxiliary hoisting mechanism, and the crane having is to secondary lifting machine
The speed governing of structure is of less demanding, may be used simple serial-resistance speed-regulation mode in the case of cost-effective, but single string
Rheostatic speed regulation mode cannot meet the requirement of goliath raising action, and general simple low cost is equipped with uniphase brake
Or reversing braking, but uniphase brake or the Property comparison of reversing braking are hard, less desirable, crane is needed using dynamic braking
The size that brake force can be mediated according to field condition is wanted, general adjustable energy-dissipating brake circuit is more complicated, needs
Complicated control circuit board and thyristor, such cost is very high, is not suitable for the crane configuration of low cost.
The pressure regulation output that pressure regulator directly carries out power supply may be used, but pressure regulator is due to being auto-transformer,
Carrying load ability is weak when low-voltage output, cannot be directly used to major loop band high power load, if wanting to be used in crane hoisting machine
In the pressure regulation of structure dynamic braking, it is also necessary to solve the problems, such as that its is load-carrying.
Invention content
In order to solve the problems, such as described in background technology, it is simply adjustable that the utility model provides a kind of crane pair hoisting motor
Dynamic braking control circuit is carried out the pressure regulation of small voltage range using simple pressure regulator, meets the pressure regulation in dynamic braking circuit
It is required that while in output voltage regulator connection step-down transformer, the voltage that pressure regulator exports is reduced to dynamic braking again to be made
Voltage solves the problems, such as that pressure regulator is unable to low-voltage directly band heavy load, while also meeting to improve carrying load ability
The pressure regulation requirement in dynamic braking circuit.Control the energized state that pressure regulator outputs and inputs circuit simultaneously using two-stage contactor,
When dynamic braking is out of service, pressure regulator input circuit and output loop are powered off simultaneously, ensure to become in energy consumption brake circuit
The safe handling of depressor and pressure regulator.
In order to achieve the above object, the utility model is realized using following technical scheme：
Simply adjustable dynamic braking control circuit, the control circuit include secondary raising electricity for a kind of crane pair hoisting motor
Mechanical, electrical resistance device, cuts resistance contactor at conversing contactor；Secondary hoisting motor stator winding is connected by conversing contactor and is led
Power supply, rotor windings connect resistor terminations terminals, and resistance contactor is cut in the intermediate connection end connection of resistor.
The control circuit further includes the energy consumption system being connected between main power source and secondary hoisting motor stator winding terminals
Dynamic circuit, the energy-dissipating brake circuit includes dynamic braking contactor one, pressure regulator, transformer, dynamic braking contactor two
And rectifier bridge.
The input terminal of the pressure regulator is connected to main power source by dynamic braking contactor one, and output end connects transformer
Primary coil, transformer secondary coil are connected to secondary hoisting motor stator winding by dynamic braking contactor two and rectifier bridge and connect
Line end.
It is also associated with DC ammeter between the rectifier bridge and secondary hoisting motor stator winding terminals.
The conversing contactor cuts resistance contactor and dynamic braking contactor one and dynamic braking contactor two
Power coil is connected to the output end of PLC controller, and the actuation of each contactor is controlled by PLC controller.
Compared with prior art, the utility model has the beneficial effects that：
1, the simple adjustable dynamic braking control circuit of a kind of crane pair hoisting motor of the utility model, using simple
Pressure regulator carries out the pressure regulation of small voltage range, meets the pressure regulation requirement in dynamic braking circuit, while connecting in output voltage regulator
The voltage that pressure regulator exports is reduced to the voltage that dynamic braking uses by step-down transformer again, to improve carrying load ability, solution
Certainly pressure regulator cannot directly band heavy load the problem of.
2, the simple adjustable dynamic braking control circuit of a kind of crane pair hoisting motor of the utility model, using two-stage energy
Consumption contactor controls the energized state that pressure regulator outputs and inputs circuit simultaneously, when dynamic braking is out of service, to pressure regulator
Input circuit and output loop power off simultaneously, ensure the safe handling of transformer and pressure regulator in energy consumption brake circuit.
3, simply adjustable dynamic braking control circuit, dynamic braking are straight for a kind of crane pair hoisting motor of the utility model
It flows back to and is equipped with DC ammeter in road, when can adjust the voltage of pressure regulator at the scene, facilitate viewing load current, understand energy consumption
The actual size of stalling current.
Description of the drawings
Fig. 1 is that a kind of structure of the simple adjustable dynamic braking control circuit of crane pair hoisting motor of the utility model is shown
It is intended to；
Fig. 2 is a kind of major loop of the simple adjustable dynamic braking control circuit of crane pair hoisting motor of the utility model
Electrical schematic diagram；
Fig. 3 be the utility model a kind of crane pair hoisting motor simply adjustable dynamic braking control circuit PLC control
Device output signal electrical schematic diagram processed；
Fig. 4 be the utility model a kind of crane pair hoisting motor simply adjustable dynamic braking control circuit control return
Road electrical schematic diagram.
Specific implementation mode
Specific implementation mode provided by the utility model is described in detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor, the control circuit packet
It includes secondary hoisting motor, resistor, conversing contactor, cut resistance contactor, secondary hoisting motor stator winding passes through positive and negative switching
Tentaculum connects main power source, and rotor windings connect resistor terminations terminals, and Ohmic contact is cut in the intermediate connection end connection of resistor
Device.
The control circuit further includes the energy consumption system being connected between main power source and secondary hoisting motor stator winding terminals
Dynamic circuit, the energy-dissipating brake circuit includes dynamic braking contactor one, pressure regulator, transformer, dynamic braking contactor two
And rectifier bridge.
The input terminal of the pressure regulator is connected to main power source by dynamic braking contactor one, and output end connects transformer
Primary coil, transformer secondary coil are connected to secondary hoisting motor stator winding by dynamic braking contactor two and rectifier bridge and connect
Line end.
It is also associated with DC ammeter between the rectifier bridge and secondary hoisting motor stator winding terminals.
The conversing contactor cuts resistance contactor and dynamic braking contactor one and dynamic braking contactor two
Power coil is connected to the output end of PLC controller, and the actuation of each contactor is controlled by PLC controller.
As shown in Fig. 2, for using the crane pair hoisting motor major loop of the simple dynamic braking mode of the utility model
Schematic diagram, wherein 201QF are secondary hoisting motor major loop breaker, 201ZC is positive contactor, 201FC be reversion contactor,
201RJ is overheating protection, 201M is secondary hoisting motor, 201R is resistor, 201JSC-204JSC is to cut resistance contactor；Energy
Consume braking circuit in, 203QF is breaker, 201ZJ is dynamic braking contactor one, 201B is pressure regulator, 202B be transformer,
202ZJ is dynamic braking contactor two, 201ZL is rectifier bridge, and 201QJ is undercurrent relay, 201A is DC ammeter.
The rightmost side is the motor main circuit of the liquid braking device 201TZD of auxiliary hoisting mechanism in Fig. 2.
As shown in Figure 3-4, it is by the control of the terminal figure and intermediate relay of each contactor of PLC controller control output
Loop diagram, PLC controller therein are Siemens S7300 type PLC, using DO module SM322-1BH01-0AA0 in figure,
PLC controller is isolated by intermediate relay, and control signal passes through intermediate relay final output to the electricity of each contactor
Positive contactor 201ZC, reversion contactor 201FC, source coil is cut resistance and is connect including intermediate relay 201PC-209PC
Tentaculum 201JSC-204JSC, one 201ZJ of dynamic braking contactor, two 202ZJ of dynamic braking contactor and for hydraulic braking electricity
Contactor 201ZDC in owner circuit.
A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor of the utility model is adjusted using simple
Depressor carries out the pressure regulation of small voltage range, meets the pressure regulation requirement in dynamic braking circuit, while connecting and dropping in output voltage regulator
The voltage that pressure regulator exports is reduced to the voltage that dynamic braking uses by pressure transformer again, to improve carrying load ability, is solved
Pressure regulator cannot directly band heavy load the problem of.
The energized state that pressure regulator outputs and inputs circuit is controlled simultaneously using two-stage dynamic braking contactor, when energy consumption system
When dynamic out of service, pressure regulator input circuit and output loop are powered off simultaneously, ensure transformer and tune in energy consumption brake circuit
The safe handling of depressor.
Facilitate sight when can adjust the voltage of pressure regulator at the scene equipped with DC ammeter in dynamic braking DC loop
It sees load current, understands the actual size of dynamic braking electric current.
Above example is implemented under premised on technical solutions of the utility model, gives detailed embodiment
With specific operating process, but the scope of protection of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (3)
1. simply adjustable dynamic braking control circuit, the control circuit include secondary raising electricity to a kind of crane pair hoisting motor
Mechanical, electrical resistance device, conversing contactor and cut resistance contactor；Secondary hoisting motor stator winding is connected by conversing contactor and is led
Power supply, rotor windings connect resistor terminations terminals, and resistance contactor is cut in the intermediate connection end connection of resistor；
It is characterized in that, the control circuit further includes being connected between main power source and secondary hoisting motor stator winding terminals
Energy-dissipating brake circuit, the energy-dissipating brake circuit include that dynamic braking contactor one, pressure regulator, transformer, dynamic braking connect
Tentaculum two and rectifier bridge；
The input terminal of the pressure regulator is connected to main power source by dynamic braking contactor one, and output end connects the primary of transformer
Coil, transformer secondary coil passes sequentially through dynamic braking contactor two and rectifier bridge is connected to secondary hoisting motor stator winding and connects
Line end.
2. a kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor according to claim 1, feature
It is, DC ammeter is also associated between the rectifier bridge and secondary hoisting motor stator winding terminals.
3. a kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor according to claim 1, feature
It is, the conversing contactor, the electricity for cutting resistance contactor and dynamic braking contactor one and dynamic braking contactor two
Source coil is connected to the output end of PLC controller, and the actuation of each contactor is controlled by PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419670.2U CN207986533U (en) | 2017-10-30 | 2017-10-30 | A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721419670.2U CN207986533U (en) | 2017-10-30 | 2017-10-30 | A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207986533U true CN207986533U (en) | 2018-10-19 |
Family
ID=63803471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721419670.2U Expired - Fee Related CN207986533U (en) | 2017-10-30 | 2017-10-30 | A kind of simple adjustable dynamic braking control circuit of crane pair hoisting motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207986533U (en) |
-
2017
- 2017-10-30 CN CN201721419670.2U patent/CN207986533U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 Termination date: 20191030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |