CN103803417A - Tower crane slewing speed regulating device - Google Patents
Tower crane slewing speed regulating device Download PDFInfo
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- CN103803417A CN103803417A CN201410007583.0A CN201410007583A CN103803417A CN 103803417 A CN103803417 A CN 103803417A CN 201410007583 A CN201410007583 A CN 201410007583A CN 103803417 A CN103803417 A CN 103803417A
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Abstract
The invention discloses a tower crane slewing speed regulating device and relates to the technical field of engineering machinery devices of tower cranes. The tower crane slewing speed regulating device comprises a motor, a frequency converter, an eddy current unit and a transformer, and is characterized by also comprising a phase-shift pressure regulating trigger, wherein the phase-shift pressure regulating trigger comprises a phase-shift pressure regulating trigger bottom plate, and a thyristor module and terminal blocks arranged on the phase-shift pressure regulating trigger bottom plate; the eddy current unit and the transformer are respectively connected to the terminal blocks of the phase-shift pressure regulating trigger; according to the terminal blocks of the phase-shift pressure regulating trigger, a first potentiometer of a dual gang potentiometer is connected with the phase-shift pressure regulating trigger, and a second potentiometer of the dual gang potentiometer is connected with the frequency converter. According to the technical scheme, the dual gang potentiometer is connected with the phase-shift pressure regulating trigger and the frequency converter, so that the eddy current braking current of the eddy current unit is effectively controlled by the phase-shift pressure regulating trigger, and the tower crane is sensitive and accurate in slewing start and brake, stable in operation, safe and reliable. Moreover, the structure is simple.
Description
Technical field
The present invention relates to tower machine construction machinery and equipment device technique field, be specifically related to a kind of tower machine revolution speed regulation device.
Background technology
Along with the development of contemporary engineering construction needs and mechanization, tower machine becomes the indispensable construction machinery and equipment in place such as harbour cargo hoisting, building ground construction hoisting, therefore its safety, stationarity and high efficiency is had to very high requirement.But tower machine needs to start frequently, brake at work, particularly in heavy duty revolution hoisting process, can bring no small impact and concussion, this not only can affect the service life of tower machine, and can lose the stationarity in revolution hoisting process, after the i.e. goods of lifting revolution puts in place, tower arm can not stop revolution at once, exist this disadvantage the lighter to affect lifting or construction, the generation of the safety misadventure that severe one is led.The reason that has this disadvantage is because tower machine of the prior art can not synchronization action at the moment frequency converter that stops and starting, binary pair.
In order to overcome the above-mentioned disadvantage of tower machine, the technical scheme of " tower machine revolution speed control equipment, system, method and tower machine " patent application and notification number: 201587814U " a kind of tower machine speed regulation device " that it is CN102780449A that people have proposed publication number.The former technical scheme, wherein this tower machine revolution speed control equipment comprises: receiving device, for receiving the speed signal of motor reality; Processing equipment, be used for the speed of motor reality and target velocity comparison, in the case of the speed of motor reality and the absolute value of the bias of target velocity are within the scope of velocity deviation, what calculation deviation was corresponding treats tonal signal value, and according to treating the frequency of tonal signal value control frequency converter or the electric current of vortex device, to adjust the speed of motor.But above-mentioned technical scheme only rests on functional description, there is no the description of the concrete technical scheme that can implement, there is open disadvantage of not filling part, thus " can make the velocity-stabilization of motor and accurately be adjusted to expected value " goal of the invention cannot realize.The latter's technical scheme is characterized in that, comprises signal processing submodule, PLC controller, PWM control module, eddy current intelligent control module, vortex device, driver output control module, ac driver, brake control module, brake equipment and motor.So there is baroque disadvantage in it, because complex structure also exists the reliability of equipment to guarantee difficulty simultaneously, the disadvantage that cost is high.
Summary of the invention
Exist and open, brake difficulty, acceleration and deceleration and move the disadvantages such as not steady for tower machine equipment speed regulation process in prior art, invent a kind of tower machine revolution speed regulation device, it has overcome the disadvantage that tower machine can not synchronization action at the moment frequency converter that stops and starting, binary pair, make tower machine open, brake sensitive and accurate, operate steadily, safe and reliable; And simple in structure, dependable performance, at the bottom of cost.
Above-mentioned goal of the invention is achieved by the following technical programs:
A kind of tower machine revolution speed regulation device, comprise motor, frequency converter, whirlpool, voltage transformer, its main points are, it also comprises phase-shift voltage regulating binary pair, phase-shift voltage regulating binary pair comprises phase-shift voltage regulating binary pair base plate, is contained in thyristor module and connection terminal on phase-shift voltage regulating binary pair base plate, and described whirlpool, voltage transformer are connected to respectively on the connection terminal of phase-shift voltage regulating binary pair; By the connection terminal of phase-shift voltage regulating binary pair, the first potential device of a duplex gang potentiometer is connected with phase-shift voltage regulating binary pair, and the second potential device of the coaxial position of duplex electrical equipment is connected with frequency converter.
As preferably, described voltage transformer is 380V/48V voltage transformer.
As preferably, described motor is torque motor
The present invention compared with prior art tool has the following advantages:
The present invention adopts a duplex to be connected with phase-shift voltage regulating binary pair with a potential device of electric axis position device, the technical scheme that another potential device of the coaxial position of duplex device is connected with frequency converter, the motor that simultaneously turns round use adopts in the situation of torque motor, make the eddy current brake electric current of the effective controlled vortex flow device of phase-shift voltage regulating binary pair, thereby overcome the disadvantage that moment frequency converter that tower machine stops and starting in revolution, binary pair can not synchronization actions, make turret machine open, brake sensitive and accurate, operate steadily, safe and reliable; And simple in structure, dependable performance, at the bottom of cost.
Accompanying drawing explanation
Fig. 1: circuit diagram of the present invention
Fig. 2: converter circuit connection diagram
Fig. 3: phase-shift voltage regulating flip-flop circuit connection diagram
Fig. 4: phase-shift voltage regulating binary pair circuit connection diagram in kind
Fig. 5: frequency converter frequency control time and motor speed coordinate diagram
Fig. 6: whirlpool braking time and eddy current brake electric current coordinate diagram
Coordinate diagram after Fig. 7: Fig. 5 and Fig. 6 are synthetic
Number in the figure is: 1-motor, 2-frequency converter, 3-whirlpool, 4-voltage transformer, 5-phase-shift voltage regulating binary pair, 6-phase-shift voltage regulating binary pair base plate, 7-thyristor module, 8-connection terminal, 9-duplex gang potentiometer, 10-the first potential device, 11-the second potential device.
The specific embodiment
Below in conjunction with embodiment that accompanying drawing 1-7 is represented, the invention will be further described:
A kind of tower machine revolution speed regulation device, comprise motor 1, frequency converter 2, whirlpool 3, voltage transformer 4, it also comprises phase-shift voltage regulating binary pair 5, phase-shift voltage regulating binary pair 5 comprises phase-shift voltage regulating binary pair base plate 6, is contained in thyristor module 7 and connection terminal 8 on phase-shift voltage regulating binary pair base plate 6, on described whirlpool 3, the connection terminal 8 that voltage transformer 4 is connected to respectively phase-shift voltage regulating binary pair 5; The first potential device 10 of connection terminal 8, the one duplex gang potentiometers 9 by phase-shift voltage regulating binary pair 5 is connected with phase-shift voltage regulating binary pair 5, and the second potential device 11 of duplex gang potentiometer 9 is connected with frequency converter 2.Described voltage transformer 6 is 380V/48V voltage transformer, and described motor 1 is torque motor.
Above-described embodiment motor 1, frequency converter 2, whirlpool 3, voltage transformer 4 have for tower machine is former, and the thyristor module 7 on newly-increased phase voltage-regulating trigger 5 is connected with motor 1, frequency converter 2, whirlpool 3, voltage transformer 4 by above-mentioned Fig. 4 to Fig. 5 with connection terminal 8, duplex gang potentiometer 9.Duplex gang potentiometer 9 and phase-shift voltage regulating binary pair 5 are arranged on joint action table the inside, and phase-shift voltage regulating binary pair 5 is subject to joint action table control.When start, joint action table handle is in zero-bit, and now phase-shift voltage regulating binary pair 5 is output as maximum voltage direct current 20V, and frequency converter 2 is output as zero; When slow operations linkage platform, duplex gang potentiometer 9 is along with joint action table operating handle rotates and changes, and the output voltage of phase-shift voltage regulating binary pair 5 changes between 0V at direct current 20V, and now frequency converter 2 changes between 0 to 50HZ.
Debugging: start test whirlpool 3 output voltages, there is the explanation of 20V vdc normal, if voltage is 0V, two lines of 380VAC are exchanged, survey output voltage and normally can use; Operations linkage platform handle, whirlpool 3 both end voltage will change between 0V at 20V, otherwise will check the problem of circuit.
Can find out from Fig. 5 to Fig. 7 of above-described embodiment, frequency converter 2 makes the full speed of speed from 0 time to the T1 time until to the T2 time, when T2 time to T3 time frequency converter 2 makes speed from being down to 0 at full speed.And in these time periods, the speed governing synchronous change of the eddy current brake electric current of whirlpool 3 complete complete and frequency converter 2, frequency converter 2 makes the full speed of speed from 0 time to the T1 time until to the T2 time, the eddy current brake electric current of whirlpool 3 is 0; When T2 time to T3 time frequency converter 2 makes speed from being at full speed down to 0, the eddy current brake electric current of whirlpool 3 rises to as maximum eddy current brake electric current, can find out from the brake line of the real-world operation of Fig. 7, and it has significantly accelerated the speed of motor 1 reduction of speed.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All such to the apparent modification of described those skilled in the art by within being included in the scope of this claim.
Claims (3)
1. a tower machine revolution speed regulation device, comprise motor (1), frequency converter (2), whirlpool (3), voltage transformer (4), it is characterized in that, it also comprises phase-shift voltage regulating binary pair (5), phase-shift voltage regulating binary pair (5) comprises phase-shift voltage regulating binary pair base plate (6), is contained in thyristor module (7) and connection terminal (8) on phase-shift voltage regulating binary pair base plate (6), on described whirlpool (3), the connection terminal (8) that voltage transformer (4) is connected to respectively phase-shift voltage regulating binary pair (5); By the connection terminal (8) of phase-shift voltage regulating binary pair (5), first potential device (10) of one duplex gang potentiometer (9) is connected with phase-shift voltage regulating binary pair (5), and second potential device (11) of duplex gang potentiometer (9) is connected with frequency converter (2).
2. tower machine revolution speed regulation device according to claim 1, is characterized in that, described voltage transformer (6) is 380V/48V voltage transformer.
3. tower machine revolution speed regulation device according to claim 1 and 2, is characterized in that, described motor (1) is torque motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007583.0A CN103803417A (en) | 2014-01-07 | 2014-01-07 | Tower crane slewing speed regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007583.0A CN103803417A (en) | 2014-01-07 | 2014-01-07 | Tower crane slewing speed regulating device |
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| CN103803417A true CN103803417A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410007583.0A Pending CN103803417A (en) | 2014-01-07 | 2014-01-07 | Tower crane slewing speed regulating device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11106180A (en) * | 1997-10-07 | 1999-04-20 | Tokyu Constr Co Ltd | Crane device control system |
| CN2646957Y (en) * | 2003-08-29 | 2004-10-06 | 长沙中联重工科技发展股份有限公司 | Rotary eddy flow controller |
| CN2708560Y (en) * | 2004-05-26 | 2005-07-06 | 四川建设机械（集团）股份有限公司 | DC speed regulator for lift mechanism of tower crane |
| CN201512374U (en) * | 2009-06-05 | 2010-06-23 | 抚顺永茂建筑机械有限公司 | Tower type crane swinger vortex controller |
| CN203624859U (en) * | 2014-01-07 | 2014-06-04 | 义乌华盟电器有限公司 | Rotation speed adjusting device of tower crane |
-
2014
- 2014-01-07 CN CN201410007583.0A patent/CN103803417A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11106180A (en) * | 1997-10-07 | 1999-04-20 | Tokyu Constr Co Ltd | Crane device control system |
| CN2646957Y (en) * | 2003-08-29 | 2004-10-06 | 长沙中联重工科技发展股份有限公司 | Rotary eddy flow controller |
| CN2708560Y (en) * | 2004-05-26 | 2005-07-06 | 四川建设机械（集团）股份有限公司 | DC speed regulator for lift mechanism of tower crane |
| CN201512374U (en) * | 2009-06-05 | 2010-06-23 | 抚顺永茂建筑机械有限公司 | Tower type crane swinger vortex controller |
| CN203624859U (en) * | 2014-01-07 | 2014-06-04 | 义乌华盟电器有限公司 | Rotation speed adjusting device of tower crane |
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Application publication date: 20140521 |