CN203582303U - Crane control system driven by outer rotor permanent magnet synchronous motor - Google Patents
Crane control system driven by outer rotor permanent magnet synchronous motor Download PDFInfo
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- CN203582303U CN203582303U CN201320602601.0U CN201320602601U CN203582303U CN 203582303 U CN203582303 U CN 203582303U CN 201320602601 U CN201320602601 U CN 201320602601U CN 203582303 U CN203582303 U CN 203582303U
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- permanent magnet
- magnet synchronous
- rotor permanent
- synchronous machine
- external rotor
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Abstract
The utility model discloses a crane control system driven by an outer rotor permanent magnet synchronous motor, and relates to the field of crane control systems. The crane control system comprises a linkage operation control platform (1), a programmable logic controller (2) and a mechanical brake (3), a variable frequency driving unit (4) and the outer rotor permanent magnet synchronous motor (5), wherein the linkage operation control platform (1) and the variable frequency driving unit (4) are both connected with the programmable logic controller (2); an outer rotor of the outer rotor permanent magnet synchronous motor (5) and a crane winding drum are the same component, the outer rotor permanent magnet synchronous motor (5) and the mechanical brake (3) are both connected with the variable frequency driving unit (4), and the mechanical brake (3) is also connected with the programmable logic controller (2). The control system disclosed by the utility model has the advantages that the impact of a crane in machinery is small in a starting moment, the noises in operation are small, the mechanical vibration is small, and the operation is smooth and stable.
Description
Technical field
The utility model relates to crane control system field, is specifically the crane control system that a kind of external rotor permanent magnet synchronous machine drives.
Background technology
Conventional hoist generally adopts AC induction motor as main driving power resources, and AC induction motor drives reel by retarder, and then Wound steel rope lifts by crane the weight on fishhook.This crane control system by ACasynchronous motor drive, due to AC induction motor High Rotation Speed, causes hoisting crane to start moment large to mechanical impact, and when hoisting crane moves, noise is large, moves not steady; And due to the existence of retarder, when hoisting crane moves, mechanical vibration are large.
Utility model content
For the defect existing in prior art, the crane control system that provides a kind of external rotor permanent magnet synchronous machine to drive is provided the purpose of this utility model, this control system makes hoisting crane to start moment little to mechanical impact, and during operation, noise is little, mechanical vibration are little, and operates steadily.
For reaching above object, the technical scheme that the utility model is taked is: the crane control system that a kind of external rotor permanent magnet synchronous machine drives, comprise combined operation control platform, Programmable Logic Controller and mechanical brake, also comprise variable frequency drive unit and external rotor permanent magnet synchronous machine, platform is controlled in described combined operation and variable frequency drive unit is all connected with described Programmable Logic Controller, the outer rotor of described external rotor permanent magnet synchronous machine and hoist roller are same member, and described external rotor permanent magnet synchronous machine and mechanical brake are all connected with described variable frequency drive unit, described mechanical brake also can be connected by Programmable Logic Controller with described.
On the basis of such scheme, also comprise rotary encoder, described rotary encoder is connected with described external rotor permanent magnet synchronous machine, and described rotary encoder is also connected with described variable frequency drive unit.
On the basis of such scheme, also comprise magnet stopper, described magnet stopper is connected with described variable frequency drive unit, and is connected with described external rotor permanent magnet synchronous machine.
On the basis of such scheme, also comprise energy feedback unit, described energy feedback unit is connected with described variable frequency drive unit.
On the basis of such scheme, also comprise stroke limit protection device, described stroke limit protection device is connected with described Programmable Logic Controller.
On the basis of such scheme, also comprise data record unit, described data record unit is connected with described variable frequency drive unit.
On the basis of such scheme, also comprise display module, described display module is connected with described Programmable Logic Controller, and described display module is also connected with described variable frequency drive unit.
On the basis of such scheme, also comprise intelligent control box, described intelligent control box is connected with described Programmable Logic Controller, and described intelligent control box is also connected with described variable frequency drive unit.
The beneficial effects of the utility model are:
1, adopt external rotor permanent magnet synchronous machine, motor outer rotor and hoist roller are same member, motor and reel function unite two into one, motor direct-drive hoist roller, thus retarder removed, reduced the mechanical vibration of hoisting crane, simultaneously, because there is no retarder, make crane structure simple, the maintenance of control system is also simple.
2, because variable frequency drive unit is controlled for external rotor permanent magnet synchronous machine provides accurate closed-loop vector, external rotor permanent magnet synchronous machine has low-speed big feature simultaneously, and can be between 0r/min-50r/min infinite speed variation, on the one hand, reduce hoisting crane and started moment to mechanical impact, effectively protect the load-carrying properties of hoisting crane, guaranteed the service life of hoisting crane, simultaneously, by external rotor permanent magnet synchronous machine, with lower speed, directly drive hoist roller, reduced because of motor high-speed rotary then the noise producing; On the other hand, hoisting crane is operated steadily.
3, variable frequency drive unit directly drives external rotor permanent magnet synchronous machine, has reduced hoisting crane operation power consumption, and hoisting crane output efficiency between the 30%-120% of rating horsepower is remained on more than 80%, and this control system has advantages of energy-conservation.
4, in control system except mechanical brake, be also provided with magnet stopper, when hoisting crane starts operation, external rotor permanent magnet synchronous machine first declutches magnet stopper, then external rotor permanent magnet synchronous machine starts, last mechanical brake declutches; When hoisting crane is out of service, external rotor permanent magnet synchronous machine is first zero-speed Speed Reduction, then mechanical brake band-type brake, finally magnet stopper band-type brake.By the cooperation of magnet stopper and mechanical brake, for hoisting crane provides duplicate protection, make the operation of hoisting crane safer.
5, in control system, be provided with data record unit, to gather and to record the operating data of hoisting crane, for management and the failure analysis of hoisting crane provides foundation.
6, in control system, be provided with stroke limit protection device; the position running to for detection of hoisting crane, and feedback position signal is to Programmable Logic Controller, after limit signal is triggered; Programmable Logic Controller is outputting parking instruction immediately, thus the safety while further having improved hoisting crane operation.
7, in control system, be provided with intelligent control box; for realizing the combined operation instruction of hoisting crane; and the protection to hoisting crane when realizing the selfdiagnosis of control logic and producing error-logic in operational process; simultaneously; intelligent control box is realized the multipoint Intelligent overload judgement of hoisting crane and protection, thus the safety while also further having improved hoisting crane operation.
8, in control system, be provided with display module, for showing the running state of hoisting crane, be convenient to manual operation and management hoisting crane.
Accompanying drawing explanation
Fig. 1 is the structural representation of the crane control system of a kind of external rotor permanent magnet synchronous machine driving of the utility model.
Reference numeral: platform 1 is controlled in combined operation; Programmable Logic Controller 2; Mechanical brake 3; Variable frequency drive unit 4; External rotor permanent magnet synchronous machine 5; Rotary encoder 6; Magnet stopper 7; Energy feedback unit 8; Stroke limit protection device 9; Data record unit 10; Display module 11; Intelligent control box 12.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
As shown in Figure 1, the crane control system that the utility model external rotor permanent magnet synchronous machine drives comprises combined operation control platform 1, Programmable Logic Controller 2, mechanical brake 3, variable frequency drive unit 4, external rotor permanent magnet synchronous machine 5, rotary encoder 6, magnet stopper 7, energy feedback unit 8, stroke limit protection device 9, data record unit 10, display module 11 and intelligent control box 12.
Described combined operation is controlled platform 1 and is all connected with described Programmable Logic Controller 2 with described stroke limit protection device 9; Described Programmable Logic Controller 2 is also connected with described display module 11, intelligent control box 12 and variable frequency drive unit 4 respectively; Described display module 11 and intelligent control box 12 are also connected with described variable frequency drive unit 4 respectively; Described variable frequency drive unit 4 is also connected with energy feedback unit 8, data record unit 10, rotary encoder 6, external rotor permanent magnet synchronous machine 5, magnet stopper 7 and mechanical brake 3 respectively; Described rotary encoder 6, magnet stopper 7 and mechanical brake 3 are also connected with described external rotor permanent magnet synchronous machine 5 respectively, and described mechanical brake 3 is also connected with described Programmable Logic Controller 2.
Described combined operation is controlled platform 1 combined operation control command is provided, such as hoisting, the instruction such as decline, large vehicle walking and carriage walking.
Described Programmable Logic Controller 2 receives the operation instruction signal that platform 1 is controlled in combined operation; then export controlling run instruction to variable frequency drive unit 4; receive the operating state signal of variable frequency drive unit 4 feedbacks simultaneously; also receive the signal of stroke limit protection device 9, according to control logic output command adapted thereto.
Described variable frequency drive unit 4 receives the control command of Programmable Logic Controllers 2, realizes control that external rotor permanent magnet synchronous machine 5 starts, stops, moves and the adjusting of running velocity, and possesses the various faults defencive functions such as overcurrent, overload, hypervelocity, stall.
Described external rotor permanent magnet synchronous machine 5, the reel of realizing motor and hoisting crane becomes one, motor outer rotor and reel are same member, make motor there is the function of reel simultaneously, by motor direct-drive reel, and for hoisting crane provides the control of accurate closed-loop vector algorithm, control hoisting crane and can in low speed situation, export high pulling torque, infinite speed variation that can be between 0r/min-50r/min, between the 30%-120% of rating horsepower, output efficiency remains on more than 80%.
The detections that described rotary coding 6 is realized external rotor permanent magnet synchronous machine 5 rotating speeds and direction, and to variable frequency drive unit 4 feed back external rotor permanent magnet synchronous machines 5 startup, status signal stops.
3 pairs of hoisting cranes of described magnet stopper 7 and mechanical brake are carried out duplicate protection, and when hoisting crane starts operation, external rotor permanent magnet synchronous machine 5 first declutches magnet stopper 7, and then external rotor permanent magnet synchronous machine 5 starts, and last mechanical brake 3 declutches; When hoisting crane is out of service, external rotor permanent magnet synchronous machine 5 is first zero-speed Speed Reduction, then mechanical brake 3 band-type brakes, finally magnet stopper 7 band-type brakes.
Described energy feedback unit 8 is realized the power consumption of external rotor permanent magnet synchronous machine 5 under generating state, protects variable frequency drive unit 4 simultaneously.
Described data record unit 10 gathers and records the operating data of hoisting crane, comprise the time of run of hoisting crane, the running state of the running power of external rotor permanent magnet synchronous machine 5, electric current, voltage and variable frequency drive unit 4 etc., for management and the failure analysis of hoisting crane provides foundation.
Described stroke limit protection device 9 detects the position that hoisting crane runs to; and feedback position signal is to Programmable Logic Controller 2; the left and right spacing and dolly, front and back spacing, cart up and down that is provided with lifting mechanism in control system is spacing; after these limit signals are triggered, Programmable Logic Controller 2 is outputting parking instruction immediately.
Described display module 11 shows the running state of hoisting crane, comprises indicator lamp, operational factor etc., is convenient to manual operation and management hoisting crane.
The operation of described intelligent control box 12 and Programmable Logic Controller 2 Collaborative Control hoisting cranes, and the protection to hoisting crane when realizing the selfdiagnosis of control logic and producing error-logic in operational process; Simultaneously; the position of intelligent control box 12 based on dolly; the comprehensive variable frequency drive unit 4 of analyzing drives parameter; by reasoning from logic indirect analysis load weight; make overload and judge and export relevant information to variable frequency drive unit 4 and Programmable Logic Controller 2, thereby realize the multipoint Intelligent overload judgement of hoisting crane and protection.
Combined operation is controlled platform 1 and has been accepted after the action command of manual operation hoisting crane, action command is directly inputted to Programmable Logic Controller 2 with level signal, without any fault, needing under de-protected state and in hoisting crane stroke allowed band, the controlling party of Programmable Logic Controller 2 response action commands output lifting mechanisms operation to and control the switching value signal of multistage speed, this signal is input to variable frequency drive unit 4, variable frequency drive unit 4 drives external rotor permanent magnet synchronous machine 5 forward or reverse again, and external rotor permanent magnet synchronous machine 5 is carried out to speed control, thereby the control of response Programmable Logic Controller 2.
When hoisting crane starts operation, when variable frequency drive unit 4 and external rotor permanent magnet synchronous machine 5 are all under normal condition, variable frequency drive unit 4 discharges magnet stopper 7, variable frequency drive unit 4 is exported zero-speed moment of torsion electric current subsequently, output simultaneously discharges mechanical brake 3 signals to Programmable Logic Controller 2, Programmable Logic Controller 2 outputs discharge mechanical brake 3 signals, after mechanical brake 3 declutches feedback the signal in the state of declutching to variable frequency drive unit 4, variable frequency drive unit 4 drives external rotor permanent magnet synchronous machine 5 according to the target speed signal of Programmable Logic Controller 2 inputs.The rotary encoder 6 being fixedly connected with external rotor permanent magnet synchronous machine 5 detects real-world operation speed, direction and the magnetic pole signal of external rotor permanent magnet synchronous machine 5, and the impulse singla detecting is fed back to variable frequency drive unit 4, after controlling target velocity that platform 1 sets and compare with combined operation, running velocity by 4 pairs of external rotor permanent magnet synchronous machines 5 of variable frequency drive unit regulates, the feedback closed loop of formation speed is controlled, and is also that the closed-loop vector of external rotor permanent magnet synchronous machine 5 is controlled.
When combined operation, controlling platform 1 has received after the operational order out of service of manual operation hoisting crane, combined operation is controlled platform 1 and is sent instruction out of service to Programmable Logic Controller 2, Programmable Logic Controller 2 output signal out of service is to variable frequency drive unit 4, and variable frequency drive unit 4 drives external rotor permanent magnet synchronous machine 5 to enter deceleration stopped process.Under variable frequency drive unit 4 output lock torque effects, the speed of external rotor permanent magnet synchronous machine 5 is progressively reduced to zero according to default, guaranteeing under zero-speed torque and mass loading balance, the speed-slackening signal of variable frequency drive unit 4 output mechanical brakes 3 is to Programmable Logic Controller 2, Programmable Logic Controller 2 output brake switch amount are to mechanical brake 3, mechanical brake 3 brake sticking brakes, and send the feedback of status signal that whether completes band-type brake to Programmable Logic Controller 2 and variable frequency drive unit 4, Programmable Logic Controller 2 receives this feedback of status signal with variable frequency drive unit 4 simultaneously, confirm that mechanical brake 3 has been successfully completed brake sticking brake, variable frequency drive unit 4 just stops outputing to the drive current of external rotor permanent magnet synchronous machine 5, then variable frequency drive unit 4 output control signals are realized effective brake to magnet stopper 7, thereby complete dual brake system protection.Finally; variable frequency drive unit 4 output run-stopping status signals are to Programmable Logic Controller 2; Programmable Logic Controller 2 receives after the band-type brake status signal of mechanical brake 3 and the run-stopping status signal of variable frequency drive unit 4; confirm that each link is all in good condition; complete once normal stopping process, ready for normally start flow process next time.
In Control System Software of the present utility model, be provided with failure reset lock function, once control system produces fault, all functions except control system reset function are all locked completely, automatically or manually getting rid of after various faults, also must use manual mode to reset to control system, could again start hoisting crane, avoid control system to move in spite of illness because operating personal violation operation causes hoisting crane the potential risk having.
The utility model is not only confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a utility model or akin technical scheme, all within its protection domain.
Claims (8)
1. the crane control system that an external rotor permanent magnet synchronous machine drives, comprise combined operation control platform (1), Programmable Logic Controller (2) and mechanical brake (3), it is characterized in that: also comprise variable frequency drive unit (4) and external rotor permanent magnet synchronous machine (5), platform (1) is controlled in described combined operation and variable frequency drive unit (4) is all connected with described Programmable Logic Controller (2), the outer rotor of described external rotor permanent magnet synchronous machine (5) and hoist roller are same member, and described external rotor permanent magnet synchronous machine (5) and mechanical brake (3) are all connected with described variable frequency drive unit (4), described mechanical brake (3) is also connected with described Programmable Logic Controller (2).
2. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, it is characterized in that: also comprise rotary encoder (6), described rotary encoder (6) is connected with described external rotor permanent magnet synchronous machine (5), and described rotary encoder (6) is also connected with described variable frequency drive unit (4).
3. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, it is characterized in that: also comprise magnet stopper (7), described magnet stopper (7) connects respectively described variable frequency drive unit (4), described external rotor permanent magnet synchronous machine (5).
4. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, is characterized in that: also comprise energy feedback unit (8), described energy feedback unit (8) is connected with described variable frequency drive unit (4).
5. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, is characterized in that: also comprise stroke limit protection device (9), described stroke limit protection device (9) is connected with described Programmable Logic Controller (2).
6. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, is characterized in that: also comprise data record unit (10), described data record unit (10) is connected with described variable frequency drive unit (4).
7. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, it is characterized in that: also comprise display module (11), described display module (11) is connected with described Programmable Logic Controller (2), and described display module (11) is also connected with described variable frequency drive unit (4).
8. the crane control system that a kind of external rotor permanent magnet synchronous machine as claimed in claim 1 drives, it is characterized in that: also comprise intelligent control box (12), described intelligent control box (12) is connected with described Programmable Logic Controller (2), and described intelligent control box (12) is also connected with described variable frequency drive unit (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602601.0U CN203582303U (en) | 2013-09-27 | 2013-09-27 | Crane control system driven by outer rotor permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602601.0U CN203582303U (en) | 2013-09-27 | 2013-09-27 | Crane control system driven by outer rotor permanent magnet synchronous motor |
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| Publication Number | Publication Date |
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| CN203582303U true CN203582303U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320602601.0U Expired - Fee Related CN203582303U (en) | 2013-09-27 | 2013-09-27 | Crane control system driven by outer rotor permanent magnet synchronous motor |
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| CN (1) | CN203582303U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140047A (en) * | 2014-07-30 | 2014-11-12 | 辽宁华禹重工有限公司 | Permanent magnetic crane |
| CN104192721A (en) * | 2014-08-21 | 2014-12-10 | 江西工埠机械有限责任公司 | Crane operation monitor |
| CN104310220A (en) * | 2014-08-21 | 2015-01-28 | 樟树市至晟锻造有限公司 | High-torque low-speed permanent magnet synchronous motor hoisting load on-line detection system and detection method |
| CN109969945A (en) * | 2019-04-30 | 2019-07-05 | 哈尔滨三跃驱动技术股份有限公司 | A kind of integrated crane permanent magnet direct-drive lifting system with fault tolerance |
-
2013
- 2013-09-27 CN CN201320602601.0U patent/CN203582303U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140047A (en) * | 2014-07-30 | 2014-11-12 | 辽宁华禹重工有限公司 | Permanent magnetic crane |
| CN104140047B (en) * | 2014-07-30 | 2016-03-16 | 辽宁华禹重工有限公司 | Permanent magnetic crane |
| CN104192721A (en) * | 2014-08-21 | 2014-12-10 | 江西工埠机械有限责任公司 | Crane operation monitor |
| CN104310220A (en) * | 2014-08-21 | 2015-01-28 | 樟树市至晟锻造有限公司 | High-torque low-speed permanent magnet synchronous motor hoisting load on-line detection system and detection method |
| CN109969945A (en) * | 2019-04-30 | 2019-07-05 | 哈尔滨三跃驱动技术股份有限公司 | A kind of integrated crane permanent magnet direct-drive lifting system with fault tolerance |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140507 Termination date: 20170927 |