CN2812365Y - Variable-frequency synchronizer for cable drum - Google Patents
Variable-frequency synchronizer for cable drum Download PDFInfo
- Publication number
- CN2812365Y CN2812365Y CNU200520095732XU CN200520095732U CN2812365Y CN 2812365 Y CN2812365 Y CN 2812365Y CN U200520095732X U CNU200520095732X U CN U200520095732XU CN 200520095732 U CN200520095732 U CN 200520095732U CN 2812365 Y CN2812365 Y CN 2812365Y
- Authority
- CN
- China
- Prior art keywords
- cable
- variable
- frequency
- cable drum
- reel
- 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
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a kind of electric-cable reel frequency-variable synchronizer, belong to handling machinery.It mainly comprises cable drum, and cable drum is connected with decelerator by driving chain, and cable drum is provided with current-collector, and decelerator is connected with variable-frequency motor, and variable-frequency motor is connected with frequency converter, and variable-frequency motor is provided with speed measuring coder.This device is owing to adopted frequency converter, the values for actual speed of main equipment can be sent in the crane control unit and be handled, velocity amplitude after converting is outputed to frequency converter, make cable drum and main equipment keep synchronous operation, cable does not need to bear extra pulling force.Torque or current sense function by frequency converter are adjusted the reel speed of service automatically, guarantee that cable is not broken.The design strength of cable and reel can reduce, and prolongs the useful life of equipment.
Description
Technical field
The utility model relates to a kind of device that is used for handling machinery, and is particularly a kind of by converter technique realization cable drum and the synchronous operated electric-cable reel frequency-variable synchronizer of main equipment.
Background technology
At present, the cable drum that the driven by power crane is selected for use generally adopts torque motor to drive or the magnetic hysteresis shaft coupling, along with the development of converter technique, has occurred utilizing tension force to detect the permanent tension force frequency-changing cable reel of regulating spool velocity again.Such scheme mainly utilizes the drag interaction folding and unfolding cable to cable, cable drum to horizontal folding and unfolding is practical, when being applied to the vertical folding and unfolding cable reeling of big stroke, higher to the requirement of strength of cable own, the decline operating mode has certain damage to cable, thereby reduces the useful life of cable and reel; Because the intensity of traditional cable is limited, the pulling force that is subjected under the situation that main equipment runs up is very big, easily cable is broken.
Summary of the invention
The purpose of this utility model provide a kind of can the active drive cable drum and main equipment keep the precise synchronization operation, it is little that cable bears pulling force, can further reduce the cross-section of cable and reel size, the electric-cable reel frequency-variable synchronizer that prolongs cable and reel useful life.
The purpose of this utility model is achieved in that a kind of electric-cable reel frequency-variable synchronizer, comprise cable drum 5, cable drum 5 is connected with decelerator 1 by driving chain 4, cable drum 5 is provided with current-collector 6, decelerator 1 is connected with variable-frequency motor 2, variable-frequency motor 2 is connected with frequency converter 7, and variable-frequency motor 2 is provided with speed measuring coder 3.Crane control unit 9 is connected with frequency converter 7 by communication cable 10.
Electric-cable reel frequency-variable synchronizer that the utility model provides, owing to adopted frequency converter, the values for actual speed of main equipment can be sent in the crane control unit and be handled, velocity amplitude after converting is outputed to frequency converter, frequency converter drives cable drum and main equipment keeps synchronous operation, cable does not need to bear extra pulling force, and the design strength of cable and reel can reduce, and prolongs the useful life of equipment.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The utility model adopts following structure: a kind of electric-cable reel frequency-variable synchronizer, comprise cable drum 5, cable drum 5 is connected with decelerator 1 by driving chain 4, cable drum 5 is provided with current-collector 6, decelerator 1 is connected with variable-frequency motor 2, variable-frequency motor 2 is connected with frequency converter 7, and variable-frequency motor 2 is provided with speed measuring coder 3.Crane control unit 9 is connected with frequency converter 7 by communication cable 10.
Current-collector in the utility model: be used for the device of transferring power or control signal in the cable drum, form by array slip ring, carbon brush usually, power or control signal are delivered to rotating part from standing part.Rotor ring in its effect and the wound-rotor motor, the effect of carbon brush are the same.
The crane control unit: advanced at present driven by power crane generally adopts the control unit of programmable controller PLC as it, perhaps is control system.Control unit is made up of modules such as CPU, I/O, by gathering various controls of crane or status signal, carry out analysis-by-synthesis after, by prior setting requirement output signal, drive each mechanism action or produce and report to the police etc.The electric-cable reel frequency-variable device receives the rate signal that crane control unit 9 is converted out according to main equipment actual motion speed, passes to frequency converter 7 by communication cable 10.Frequency converter 7 passes to crane control unit 9 with detected electric current or dtc signal by communication cable 10, sends frequency converter 7 back to after handling through crane control unit 9.
Speed measuring coder: generally be contained in the shaft extension end of mechanism's rotating part, be used for the rotary speed of testing agency.Its principle is to rotate a circle in mechanism, produces fixing step-by-step counting, by the count number that other device received code device produced in the unit interval, can obtain the actual rotary speed of mechanism.
The operation principle of this device is as follows: when hoisting machinery starts operation, deliver to electric-cable reel frequency-variable device 7 after the programmable controller unit 9 that main equipment frequency converter 8 enabling signals and rate signal are sent into hoisting machinery by communication cable 10 is handled simultaneously, frequency converter 7 drives the reel synchronous operations.Programmable Logic Controller converses the length velocity relation between main equipment motor and reel variable-frequency motor 2 by gathering the technical parameter of main equipment and cable drum 5.Because the cable drum and the cable drum 5 of main equipment all belong to multi-lay winding, length velocity relation constantly changes between them.When the coiling diameter of main equipment wire reel or cable drum 5 changed, in time the conversion scale factor remained cable drum 5 and main equipment speed synchronously.
In actual use, " race groove " phenomenon often takes place in cable when arranging on cable drum 5, the number of turns of certain one deck may have error with anticipation, cable drum synchronism deviation can occur in running like this, the main equipment operation is big highly more, synchronism deviation is big more, finally cause cable winding too tight or too loose, can utilize the torque or the current sense function of frequency converter 7 this moment, and Programmable Logic Controller between communication set up after, the real-time monitoring motor torque value or the current value of frequency converter are delivered to Programmable Logic Controller.Under the normal condition, the electric-cable reel frequency-variable device adopts speed control, keeps synchronous operation by conversion relation and main equipment.When Programmable Logic Controller detects coiling motor torque or electric current and exceeds the estimates upper limit torque or electric current, the expression cable draw tension, cable winding speed needs fine setting, this moment Programmable Logic Controller to adjust the reel frequency converter in proportion given, till detecting torque or current value and returning normal range (NR).The basic conception that the solution cable is crossed loose problem is: when the cable drum layer to layer transition, the certain proportion that Programmable Logic Controller is pressed the existing speed of reel motor is additional given to the reel frequency converter, adjusts the reel speed of service, tightens up cable automatically.If motor torque or electric current output have arrived preset upper limit, mean cable tensioning, can remove additional given this moment.So utilization torque or Current Control, to adjust spool velocity given in good time, can reach the effect with the main equipment precise synchronization.
Claims (2)
1, a kind of electric-cable reel frequency-variable synchronizer, comprise cable drum (5), cable drum (5) is connected with decelerator (1) by driving chain (4), it is characterized in that: cable drum (5) is provided with current-collector (6), decelerator (1) is connected with variable-frequency motor (2), variable-frequency motor (2) is connected with frequency converter (7), and variable-frequency motor (2) is provided with speed measuring coder (3).
2, electric-cable reel frequency-variable synchronizer according to claim 1 is characterized in that: crane control unit (9) is connected with frequency converter (7) by communication cable (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520095732XU CN2812365Y (en) | 2005-03-31 | 2005-03-31 | Variable-frequency synchronizer for cable drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520095732XU CN2812365Y (en) | 2005-03-31 | 2005-03-31 | Variable-frequency synchronizer for cable drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2812365Y true CN2812365Y (en) | 2006-08-30 |
Family
ID=36938752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520095732XU Expired - Fee Related CN2812365Y (en) | 2005-03-31 | 2005-03-31 | Variable-frequency synchronizer for cable drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2812365Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946091A (en) * | 2017-03-22 | 2017-07-14 | 广东工业大学 | A kind of variable speed Winder |
| CN108100575A (en) * | 2017-12-15 | 2018-06-01 | 无锡天奇信息技术有限公司 | A kind of completion line plate chain control device of auto production line |
| CN110467065A (en) * | 2019-09-24 | 2019-11-19 | 湖南海润电气有限公司 | A kind of cable drum in the case where high-frequency high-speed folding and unfolding cable |
-
2005
- 2005-03-31 CN CNU200520095732XU patent/CN2812365Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946091A (en) * | 2017-03-22 | 2017-07-14 | 广东工业大学 | A kind of variable speed Winder |
| CN108100575A (en) * | 2017-12-15 | 2018-06-01 | 无锡天奇信息技术有限公司 | A kind of completion line plate chain control device of auto production line |
| CN110467065A (en) * | 2019-09-24 | 2019-11-19 | 湖南海润电气有限公司 | A kind of cable drum in the case where high-frequency high-speed folding and unfolding cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1982188A (en) | Electric-cable reel frequency-variable synchronizer | |
| CN103234843B (en) | A kind of drop hammer impact testing machine | |
| CN103407920B (en) | A kind of intelligent deep hole rope winch being driven by variable-frequency motor | |
| CN105967002A (en) | Cable take-up and pay-off system | |
| CN2812365Y (en) | Variable-frequency synchronizer for cable drum | |
| CN112520503A (en) | Cable turntable of submarine cable laying vessel and cable laying machine control device | |
| CN209797337U (en) | Redundant electric hoist | |
| CN201080414Y (en) | Container multipurpose machine for assembling and disassembling door | |
| CN109703989A (en) | A kind of reliable continuous conveyor system auto-tensioning control system and its control method | |
| CN201223889Y (en) | Apparatus for winding metal wire | |
| CN108358064B (en) | Self-powered tower crane rotating lifting appliance device | |
| CN209720751U (en) | A kind of reliable continuous conveyor system auto-tensioning control system | |
| CN201865109U (en) | Variable-frequency control device of piling machine | |
| CN201770439U (en) | Constant-power speed regulation system for winch of oil drilling rig | |
| CN107055316B (en) | A kind of four rope grab crane for big elevating height | |
| CN209344642U (en) | Automatic overhead line system | |
| CN101844725B (en) | Line voltage drop automatic detection control method for hoisting machinery | |
| CN205901246U (en) | Shore connection cable reel | |
| CN201647832U (en) | Anti-torque device of mechanical screw rod type hanging tool | |
| CN103670340B (en) | M type traction digitlization energy-saving pumping unit | |
| CN201864476U (en) | Lifting mechanism of gantry crane | |
| CN201181831Y (en) | Cable reel control device | |
| CN101977015B (en) | Frequency conversion control device of pile hammer | |
| CN212222217U (en) | Real-time anti-swing device of tower crane luffing mechanism | |
| CN217769833U (en) | Crane pulley power generation and energy storage system |
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 |