CN2817209Y - Frequency conversion start hydraulic press multi motor device - Google Patents
Frequency conversion start hydraulic press multi motor device Download PDFInfo
- Publication number
- CN2817209Y CN2817209Y CN 200520026783 CN200520026783U CN2817209Y CN 2817209 Y CN2817209 Y CN 2817209Y CN 200520026783 CN200520026783 CN 200520026783 CN 200520026783 U CN200520026783 U CN 200520026783U CN 2817209 Y CN2817209 Y CN 2817209Y
- Authority
- CN
- China
- Prior art keywords
- power
- converter
- switch
- electrically connected
- hydraulic press
- 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
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model provides a frequency conversion start hydraulic press multi-motor device. The utility model is characterized in that an alternating current frequency converter is electrically connected among multiple motors driving a hydraulic press main oil pump and a power switch; the power input end of the alternating current frequency converter is electrically connected with the power switch, and the output end thereof is connected with each motor through a frequency conversion start switch of the alternating current frequency converter; the power switch is also electrically connected with each motor through a power frequency run switch of the alternating current frequency converter, and the control end of the alternating current frequency converter is electrically connected with the output ends of a PC single-chip machine and a PLC programmable controller of the hydraulic press. After the multiple motors of the hydraulic press main oil pump gradually regulate the supply frequency to 50Hz power frequency orderly from low frequency to high frequency, the power supply circuit of commercial power is switched on. The device solves the problem that the multiple alternating current asynchronous motors with high power are difficult to start, and the device largely enhances the starting performance of the motors. Besides, the utility model also has the advantages of simple structure and easy production.
Description
Technical field
The utility model relates to a kind of hydraulic press HYDRAULIC CONTROL SYSTEM technical field that is used for, especially a kind of variable frequency starting hydraulic press multiple motors device.
Background technology
At present, the high power AC asynchronous motor on the high power hydraulic machine is commonly the Starting mode of star triangle start or single-circuit transformer reduction voltage.The shortcoming of this traditional Starting mode is that staring torque is little, only is specified 30%-50%; Starting current is big, for the 3.5-7 of rated current doubly.Therefore, traditional Starting mode is very limited large hydraulic press user's power supply capacity, often because excessive the causing of starting current starts difficulty.
Summary of the invention
The utility model is for solving the technical problem that exists in the known technology; And provide a kind of variable frequency starting hydraulic press multiple motors device that improves the motor start-up performance.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of variable frequency starting hydraulic press multiple motors device, form by the hydraulic press Hydraulic Power Transmission System of Programmable Logic Controller PLC and single-chip microcomputer PC control, the multiple motors that is connected with Hydraulic Power Transmission System, the mains switch that is electrically connected with multiple motors, also be electrically connected with 1 AC converter between described multiple motors and the mains switch; Power input R, the S of AC converter, T electric connection of power supply switch, the variable frequency starting switch that output U, the V of AC converter, W reach by AC converter is electrically connected the input of multiple motors; Mains switch also is electrically connected the input of multiple motors by the power frequency operation switch of AC converter; Described variable frequency starting switch and power frequency operation switch are the mechanical interlocking contactor; The control end of described AC converter is electrically connected the output of PLC Programmable Logic Controller.
The utility model can also adopt following technical measures:
Described motor is 4, is respectively M1, M2, M3, M4; Described variable frequency starting switch is 4, is respectively KM1, KM3, KM5, KM7; Described power frequency operation switch is 4 also, is respectively KM2, KM4, KM6, KM8; The control end of described AC converter is respectively soft and opens/and H/A, the soft M1 of opening input H1, the soft M2 of opening input H2, the soft M3 of opening input H3, the soft M4 of opening input H4, COM and frequency converter move/stop input RUN, COM automatically.
Advantage and the good effect that the utlity model has are: owing to be electrically connected with AC converter by Programmable Logic Controller PLC control between the multiple motors of hydraulic press and mains switch, successively multiple motors is regulated from low to high gradually the frequency of supply of motor stator, to the 50Hz power frequency, switch to the mains-supplied circuit, greatly reduce starting current (starting current is reduced to 1-1.25 times of rated current), improved staring torque 150%; The utility model also has advantage simple in structure, that be easy to make in addition.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an AC converter circuit connection diagram of the present utility model.
Among the figure: 1, PC single-chip microcomputer; 2, PLC Programmable Logic Controller; 3, PROFIBUS communication bus; 4, AC converter; 5, motor M1-M4; 6, mechanical interlocking contactor; 7, mains switch.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, the motor 5 of hydraulic press main oil pump has four, is respectively M1, M2, M3, M4.In order to reduce the starting current of motor 5, between four motor and mains switch 7, be electrically connected with AC converter 4.In order to switch to the mains-supplied circuit after starting, between AC converter and each motor, also add mechanical interlocking contactor 6.The control end of AC converter 4 is by the output of PROFIBUS communication bus 3 electrical connection PC single-chip microcomputers 1 and PLC Programmable Logic Controller 2, and PLC can control four motor frequency changes startups successively like this, until the normal power frequency running of whole motor.AC converter is connected as shown in Figure 2 with the circuit of each motor, power input R, the S of AC converter 4, T are connected with the 380V power supply with KMO by the QFO of mains switch 7, output U, the V of AC converter, W can realize each motor variable frequency starting respectively like this by M1, M2, M3 and M4 that variable frequency starting K switch M1, KM3, KM5 and the KM7 of AC converter is electrically connected motor 5 respectively; Motor M1, M2, M3 and M4 also respectively by power frequency operation K switch M2, KM4, KM6 and the KM8 of AC converter, are electrically connected the 380V power supply through mains switch QF1 in addition; In order to ensure the switching of variable frequency starting and power frequency operation switch, each motor 5 is provided with the mechanical interlocking contactor 6 of KM1 and KM2, KM3 and KM4, KM5 and KM6, KM7 and KM8; Soft the opening of the control end of AC converter/H/A, the soft M1 of opening input H1, the soft M2 of opening input H2, the soft M3 of opening input H3, the soft M4 of opening import H4, COM (KAO), move/stop the output that KAO (RUN, COM) all is electrically connected the PLC Programmable Logic Controller automatically.
Among the utility model embodiment: AC converter 4 is selected the Ai Mosheng model; Mechanical interlocking contactor 6 selects the sky and water 213, the CJX4-D model.
Claims (2)
1. variable frequency starting hydraulic press multiple motors device, form by the hydraulic press Hydraulic Power Transmission System of Programmable Logic Controller PLC and single-chip microcomputer PC control, the multiple motors that is connected with Hydraulic Power Transmission System, the mains switch that is electrically connected with multiple motors, it is characterized in that: also be electrically connected with 1 AC converter between described multiple motors and the mains switch; Power input R, the S of AC converter, T electric connection of power supply switch, output U, the V of AC converter, W are electrically connected the input of multiple motors by the variable frequency starting switch of AC converter; Mains switch also is electrically connected the input of multiple motors by the power frequency operation switch of AC converter; Described variable frequency starting switch and power frequency operation switch are the mechanical interlocking contactor; The control end of described AC converter is electrically connected the output of PLC Programmable Logic Controller.
2. variable frequency starting hydraulic press multiple motors device according to claim 1, it is characterized in that: described motor is 4, is respectively M1, M2, M3, M4; Described variable frequency starting switch is 4, is respectively KM1, KM3, KM5, KM7; Described power frequency operation switch is 4 also, is respectively KM2, KM4, KM6, KM8; The control end of described AC converter is respectively soft and opens/and H/A, the soft M1 of opening input H1, the soft M2 of opening input H2, the soft M3 of opening input H3, the soft M4 of opening input H4, COM and frequency converter move/stop input RUN, COM automatically.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200520026783 CN2817209Y (en) | 2005-07-26 | 2005-07-26 | Frequency conversion start hydraulic press multi motor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200520026783 CN2817209Y (en) | 2005-07-26 | 2005-07-26 | Frequency conversion start hydraulic press multi motor device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2817209Y true CN2817209Y (en) | 2006-09-13 |
Family
ID=36997019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200520026783 Expired - Fee Related CN2817209Y (en) | 2005-07-26 | 2005-07-26 | Frequency conversion start hydraulic press multi motor device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2817209Y (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102381550A (en) * | 2011-10-24 | 2012-03-21 | 南京化工职业技术学院 | Material weighing and variable-speed conveying system for blast furnace |
CN102480255A (en) * | 2010-11-29 | 2012-05-30 | 蓝星化工新材料股份有限公司广西分公司 | Method and device for controlling multiple motors by one soft starter |
CN102681480A (en) * | 2012-05-04 | 2012-09-19 | 南通中技桩业有限公司 | Energy-saving power supply system of concrete pipe pile production device |
CN103148255A (en) * | 2011-12-07 | 2013-06-12 | 无锡华瑛微电子技术有限公司 | Valve control system and method thereof |
CN111293925A (en) * | 2018-12-10 | 2020-06-16 | 深圳市中南科学院有限公司 | Method and device for stepped starting operation of high-power motor |
-
2005
- 2005-07-26 CN CN 200520026783 patent/CN2817209Y/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102480255A (en) * | 2010-11-29 | 2012-05-30 | 蓝星化工新材料股份有限公司广西分公司 | Method and device for controlling multiple motors by one soft starter |
CN102381550A (en) * | 2011-10-24 | 2012-03-21 | 南京化工职业技术学院 | Material weighing and variable-speed conveying system for blast furnace |
CN102381550B (en) * | 2011-10-24 | 2014-12-24 | 南京化工职业技术学院 | Material weighing and variable-speed conveying system for blast furnace |
CN103148255A (en) * | 2011-12-07 | 2013-06-12 | 无锡华瑛微电子技术有限公司 | Valve control system and method thereof |
CN103148255B (en) * | 2011-12-07 | 2015-04-15 | 无锡华瑛微电子技术有限公司 | Valve control system and method thereof |
CN102681480A (en) * | 2012-05-04 | 2012-09-19 | 南通中技桩业有限公司 | Energy-saving power supply system of concrete pipe pile production device |
CN111293925A (en) * | 2018-12-10 | 2020-06-16 | 深圳市中南科学院有限公司 | Method and device for stepped starting operation of high-power motor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN2817209Y (en) | Frequency conversion start hydraulic press multi motor device | |
CN201616807U (en) | Motor control device for permanent-magnet motor direct-driving screw-pump oil extractor | |
CN201113876Y (en) | Oil pumping machine dedicated multi- power integral energy-saving actuator | |
CN201270497Y (en) | Variable frequency and power frequency operation main circuit structure for three phase AC electric motor | |
CN2874922Y (en) | Variable frequency fume exhaust fan | |
CN201536344U (en) | On-line electric pole-changing speed regulation control circuit for two-speed motor | |
CN101447720A (en) | Novel tri-power, efficient, energy-saving three-phase asynchronous motor used for oil extractor | |
CN103166543A (en) | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor | |
CN102832872A (en) | Multi-level matrix frequency converter based speed-regulating control system of mine hoist | |
CN200956559Y (en) | Large-sized motor reactive power balance steping-down start device | |
CN202334410U (en) | Frequency conversion control system | |
CN113394935A (en) | Variable power three-phase motor | |
CN101814812B (en) | Double-speed four-power energy-saving three-phase asynchronous motor | |
CN201069861Y (en) | Reverser speed-adjusting device for lifter | |
CN201039081Y (en) | Frequency conversion speed regulation circuit of mining hoister | |
CN201608690U (en) | Variable-frequency speed-adjusting device of evaporating-type air conditioner | |
CN201805294U (en) | Direct-current brushless motor with series-parallel three-phase double winding structure | |
CN201374598Y (en) | Novel three-power high-efficiency energy-saving three-phase asynchronous motor for pumping unit | |
CN202094840U (en) | Novel rotor chopping speed regulating system of hoisting wound motor | |
CN2535965Y (en) | Double-power energy-saving motor | |
CN2471013Y (en) | High start-torque single-phase capacity operation micro motor | |
CN2530382Y (en) | Dynamo having multiple control modes | |
CN200950799Y (en) | Soft ice cream machine capable of realizing variable frequency control | |
CN206650610U (en) | A kind of paper mill heavy-duty motor frequency-converting control device | |
CN214412509U (en) | Surface aerator with intelligent motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |