CN104528559B - Tower crane system and tower crane rotation vortex flow controller - Google Patents
Tower crane system and tower crane rotation vortex flow controller Download PDFInfo
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- CN104528559B CN104528559B CN201510003950.4A CN201510003950A CN104528559B CN 104528559 B CN104528559 B CN 104528559B CN 201510003950 A CN201510003950 A CN 201510003950A CN 104528559 B CN104528559 B CN 104528559B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a tower crane system and a tower crane rotation vortex flow controller. The tower crane rotation vortex flow controller comprises a mains supply circuit and a storage battery power supply circuit which are connected between a power grid and a vortex coil in parallel, wherein the storage battery power supply circuit comprises a transformer, a rectification and filtration circuit, a charging circuit, a storage battery, a first relay and a relay control circuit; the transformer, the rectification and filtration circuit, the charging circuit, the storage battery and the first relay are sequentially connected between the power grid and the vortex coil one by one, and the relay control circuit is connected with the control end of the first relay and used for controlling closing of a normally-open contact of the first relay when the power grid loses power or breaks down suddenly so as to guarantee that a tower crane can brake normally on the condition that the power grid loses power or breaks down suddenly.
Description
Technical field
The present invention relates to control technology field is vortexed, more particularly, it relates to a kind of tower crane system and tower crane revolution whirlpool
Stream controller.
Background technology
Tower crane is crane gear the most frequently used on construction site, turns round vortex controller, arm, slew gear electricity by tower crane
The parts such as machine are constituted.When braking is needed, electrical network turns round vortex controller by tower crane and persistently gives back to rotation mechanism motor
Eddy current coil is powered, and applies brake force whereby to arm, but works as the unexpected power-off of electrical network or break down (such as electrical network phase shortage or wink
Between the failure condition such as power down) when, eddy current coil without electricity failure, be lifted with the arm of weight probably because the inswept building site of inertia and
Lead to a disaster.
Traditional counte-rplan are, on the basis of above-mentioned electrical network current supply circuit, to be further added by a connection accumulator and brake
The storage battery power supply loop of coil, be serially connected with the storage battery power supply loop footbrake switch, the unexpected power-off of electrical network or send out
Switched by driver's footbrake during raw failure, but the program respond of driver is required it is higher,
There is accident potential.
The content of the invention
In view of this, the present invention provides a kind of tower crane system and tower crane revolution vortex controller, to ensure tower crane in electricity
Can be with normal brake application in the case of netting unexpected power-off or breaking down.
A kind of tower crane turns round vortex controller, including the electrical network current supply circuit and storage that are connected in parallel between electrical network and eddy current coil
Battery current supply circuit, wherein, the storage battery power supply loop includes：
Transformator between electrical network and eddy current coil, current rectifying and wave filtering circuit, charging circuit, accumulator are sequentially connected with one by one
With the first relay；
And the control relay circuit being connected with the control end of first relay, in the unexpected power-off of electrical network or
The normally opened contact closure of first relay is controlled when breaking down.
Wherein, the control relay circuit include the first diode, the second diode, first resistor, second resistance,
Three resistance, the 4th resistance, the 5th resistance, the first electric capacity, the first NPN type triode and NMOS tube, wherein：
The anode of first diode connects the input side of the charging circuit, its negative electrode successively first resistor described in Jing and
First capacity earth；Second resistance described in Jing and the 3rd resistor are grounded the input side of the charging circuit successively；
Described in Jing, the 4th resistance and the 5th resistance connect the junction point of the first resistor and first electric capacity successively
Ground；
The grounded emitter of first NPN type triode, its colelctor electrode connect the 4th resistance and the 5th resistance
Junction point, its base stage connects the junction point of the second resistance and the 3rd resistor；
The source ground of the NMOS tube, its grid connect the junction point of the 4th resistance and the 5th resistance, its leakage
Pole connects the anode of second diode；
The negative electrode of second diode connects the outlet side of the charging circuit；The coils from parallel connection of coils of first relay exists
The second diode two ends.
Alternatively, the control relay circuit also includes the reverse-filling diode positioned at the accumulator outlet side.
Wherein, the charge circuit include the first voltage stabilizing IC, the second electric capacity, the second NPN type triode, PNP type triode,
6th resistance, the 7th resistance, the 8th resistance and the 9th resistance, wherein：
The plus earth of the first voltage stabilizing IC, the 6th resistance described in its negative electrode Jing connect the output of the current rectifying and wave filtering circuit
Side, the second electric capacity described in its reference edge Jing connect the negative electrode of the first voltage stabilizing IC；
The colelctor electrode of second NPN type triode connects the outlet side of the current rectifying and wave filtering circuit, and its base stage connects described
The negative electrode of one voltage stabilizing IC, its emitter stage the 7th resistance and the 8th resistance eutral grounding described in Jing successively；
The junction point of the 7th resistance and the 8th resistance connects the reference edge of the first voltage stabilizing IC；
The emitter stage of the PNP type triode connects the emitter stage of second NPN type triode, the 9th described in its base stage Jing
Resistance eutral grounding, its colelctor electrode connect the outlet side of the accumulator.
Alternatively, the charging circuit also includes the first light emitting diode, the tenth resistance, the second voltage stabilizing IC, the 11st electric
Resistance and the 12nd resistance, wherein：
The outlet side and ground of the charging circuit are connected in parallel on after 11st resistance and the 12nd resistance concatenation
Between；
The reference of the second voltage stabilizing IC terminates the junction point of the 11st resistance and the 12nd resistance, its anode
Ground connection, the first light emitting diode described in Jing and the tenth resistance connect the emitter stage of the PNP type triode to its negative electrode successively.
Wherein, the electrical network current supply circuit includes the controlled rectification circuit and second being serially connected between electrical network and eddy current coil
Relay.
Wherein, the controlled rectification circuit is half-wave controlled rectification circuit.
Wherein, the half-wave controlled rectification circuit includes the 4th diode, the first IGCT, the second IGCT, first steady
Pressure pipe, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, adjustable electric
Resistance, the 3rd electric capacity and the 5th diode, wherein：
The high voltage input that 13rd resistance described in the anode Jing of the 4th diode gets access to grid, its negative electrode Jing successively
14th resistance and the 15th resistance connect the first end of the 16th resistance；
The low-voltage input of the second termination electrical network of the 16th resistance；
The control pole of first IGCT connects the junction point of the 14th resistance and the 15th resistance, its negative electrode
Described in Jing, the 18th resistance connects the first end of the 16th resistance, and the 3rd electric capacity described in its anode Jing connects the 16th resistance
First end, while its anode also adjustable resistance described in Jing and the 17th resistance connect the moon of the 4th diode successively
Pole；
The control pole of second IGCT connects the negative electrode of first IGCT, and its negative electrode connects the 16th resistance
First end, the high voltage input that its anode gets access to grid；
First stabilivolt is connected in parallel on the 14th resistance and the 15th resistance two ends, and its anode is connected on described
15th resistance side, its negative electrode are connected on the 14th resistance side；
The anode of first stabilivolt connects the first end of second relay, the second termination of second relay
The low-voltage input of electrical network；
The anode of the 6th diode connects the second end of the 16th resistance, and its negative electrode connects the 16th resistance
First end.
Alternatively, the half-wave controlled rectification circuit also include the 6th diode, the 19th resistance, the 20th resistance, the
Two stabilivolts and the second light emitting diode, wherein：
The anode of the 5th diode connects the second end of the 16th resistance, and its negative electrode connects second relay
Second end；
19th resistance described in the negative electrode Jing of second stabilivolt connects the second end of second relay, and its anode connects
The low-voltage input of electrical network；It is steady that described second is connected in parallel on again after 20th resistance and second light emitting diode series connection
Pressure pipe two ends.
A kind of tower crane system, including the vorticity line of any of the above-described kind of tower crane revolution vortex controller and slew gear motor
Circle.
It can be seen from above-mentioned technical scheme that, the present invention is by cut-in relay and relay on storage battery power supply loop
Device control circuit, and when the unexpected power-off of electrical network is detected or the when of breaking down automatically controls the normally opened contact of the relay and inhales
Close, so as to continue power supply a period of time to eddy current coil using accumulator in the unexpected power-off of electrical network or in the case of breaking down,
It is sufficient for tower crane normal brake application.Compared to prior art, the present invention can be automatically switched in grid cut-off or after breaking down
On storage battery power supply loop, the handoff procedure improves the safety coefficient and reliability of tower crane braking procedure without the need for manual operation.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is that a kind of tower crane turns round vortex controller structural representation disclosed in the embodiment of the present invention；
Fig. 2 is a kind of control relay circuit structural representation disclosed in the embodiment of the present invention；
Fig. 3 is a kind of charging circuit configuration schematic diagram disclosed in the embodiment of the present invention；
Fig. 4 is that disclosed another tower crane of the embodiment of the present invention turns round vortex controller structural representation；
Fig. 5 is a kind of half-wave controlled rectification circuit structural representation disclosed in the embodiment of the present invention；
Fig. 6 is a kind of input and output voltage oscillogram of half-wave controlled rectification circuit disclosed in the embodiment of the present invention；
Fig. 7 is the binding post schematic diagram that a kind of tower crane disclosed in the embodiment of the present invention turns round vortex controller.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the invention discloses a kind of tower crane revolution vortex controller, to ensure that tower crane is unexpected in electrical network
Power-off can be with normal brake application, including being connected in parallel on electrical network (at least connecing two live wires in three phase network) in the case of breaking down
Electrical network current supply circuit L1 and storage battery power supply loop L2 and eddy current coil between；Storage battery power supply loop L2 includes transformator
10th, current rectifying and wave filtering circuit 20, charging circuit 30, accumulator 40, the first relay KA1 and control relay circuit 50, wherein：
Transformator 10, current rectifying and wave filtering circuit 20, charging circuit 30, accumulator 40 and the first relay KA1 sequentially connect one by one
It is connected between electrical network and eddy current coil；
Control relay circuit 50 is connected with the control end of the first relay KA1, in the unexpected power-off of electrical network or generation
The normally opened contact closure of the first relay KA1 is controlled during failure (the such as failure condition such as electrical network phase shortage or instant power-down).
When electrical network is normal, line voltage is powered to eddy current coil by electrical network current supply circuit L1, while transformator 10 is to defeated
The line voltage for entering carries out blood pressure lowering process, and the low-voltage AC that process is obtained is conveyed to current rectifying and wave filtering circuit 20；Rectification is filtered
The low-voltage AC for receiving is converted into charging circuit 30 is sent into after stable low-voltage DC by wave circuit 20；Charge electricity afterwards
Road 30 is charged for accumulator 40, until 40 charging complete of accumulator.It can be seen that, the tower crane revolution vortex controller has accumulator
Automatic charging function.
Additionally, the present embodiment also accesses the first relay KA1, control relay circuit 50 on the L2 of storage battery power supply loop
The normally opened contact adhesive of the first relay KA1 is automatically controlled when the unexpected power-off of electrical network is detected or break down, so as in electricity
Continue power supply a period of time to eddy current coil using accumulator 40 in the case of netting unexpected power-off or breaking down, it is sufficient to allow tower crane
Normal brake application.Compared to prior art, the present embodiment can automatically switch to accumulator confession in grid cut-off or after breaking down
Electrical circuit L2, the handoff procedure improve the safety coefficient and reliability of tower crane braking procedure without the need for manual operation.
Disclosed in the present embodiment in tower crane revolution vortex controller, control relay circuit 50 can be adopted and be opened up shown in Fig. 2
Flutter, it is not limited to this.It includes the first diode D1, the second diode D2, first resistor R1, second resistance R2, the 3rd electric
Resistance R3, the 4th resistance R4, the 5th resistance R5, the first electric capacity C1, the first NPN type triode VT1 and NMOS tube Q1, wherein (at this
In accompanying drawing disclosed in embodiment, the coil and normally opened contact of the first relay KA1 are marked with same alphabetic character KA1；Charge
The input side and input side voltage of circuit 30 is marked with same alphabetic character VCC1；The outlet side of charging circuit 30 and output
Side voltage, namely the positive pole and cathode voltage of accumulator 40, are marked with same alphabetic character VCC2)：
The anode of the first diode D1 meets the input side VCC1 of charging circuit 30, its negative electrode Jing first resistors R1 and successively
One electric capacity C1 is grounded；Jing second resistances R2 and 3rd resistor R3 are grounded VCC1 successively；The company of first resistor R1 and the first electric capacity C1
The 4th resistance R4 of Jing and the 5th resistance R5 are grounded contact successively；
The grounded emitter of the first NPN type triode VT1, its colelctor electrode connect the connection of the 4th resistance R4 and the 5th resistance R5
Point, its base stage connect the junction point of second resistance R2 and 3rd resistor R3；
The source ground of NMOS tube Q1, its grid connect the junction point of the 4th resistance R4 and the 5th resistance R5, and its drain electrode connects the
The anode of two diode D2；
The negative electrode of the second diode D2 meets the outlet side VCC2 of charging circuit 30；The coils from parallel connection of coils of the first relay KA1 exists
Second diode D2 two ends.
The operation principle of control relay circuit 50 shown in Fig. 2 is：
When electrical network is normal, VCC1 passes through the first diode D1 and first resistor R1 and charges to the first electric capacity C1 so that the
One electric capacity C1 obtains left positive right negative charging voltage；VCC1 passes through the partial pressure electricity that second resistance R2 and 3rd resistor R3 are constituted simultaneously
Road come drive the first NPN type triode VT1 turn on；After VT1 conductings, the grid potential of NMOS tube Q1 is pulled low, and NMOS tube Q1 is closed
It is disconnected；The coil no power of the first relay KA1 after the shut-off of NMOS tube Q1, its normally opened contact are off, and accumulator 40 is not
Can power to eddy current coil.
When grid cut-off or when breaking down, the first electric capacity C1 passes through the 4th resistance R4 and the 5th resistance R5 and discharges, NMOS
The grid potential of pipe Q1 is driven high, the conducting of NMOS tube Q1；The coil electricity of the first relay KA1 after the conducting of NMOS tube Q1, which is normal
Contact adhesive is opened, accumulator 40 starts to power to eddy current coil.The capacitance and the 4th resistance R4 of the first electric capacity C1 and the 5th electric
The resistance size of resistance R5, determines the duration of opening of NMOS tube Q1, namely grid cut-off or the backwash coil that breaks down are connected
The duration of accumulator 40, the braking duration that can be needed according to tower crane in practical application are rationally arranged.
Wherein, due to the reverse cut-off effect of the first diode D1, the discharge current of the first electric capacity C1 will not flow to first
The base stage of NPN type triode VT1 turns on the first NPN type triode VT1, therefore also would not be in the first NPN type triode VT1
The grid potential of NMOS tube Q1 is dragged down after conducting.Winks of the second diode D2 in the normally opened contact disconnection of the first relay KA1
Between provide continuous current circuit to its coil, the overvoltage of NMOS tube Q1 can be avoided to burn.
Additionally, referring also to Fig. 2, when the first relay KA1 is closed by mistake to prevent control relay circuit 50 from breaking down,
The energy for coming from electrical network current supply circuit pours in down a chimney into accumulator 40 and causes accumulator 40 to damage, and control relay circuit 50 can also be wrapped
Include：Positioned at the reverse-filling diode D3 of 40 outlet side of accumulator.
Finally it should be noted that disclosed in Fig. 2 in topology, the first NPN type triode VT1 can be replaced NMOS tube,
NMOS tube Q1 can be replaced NPN type triode.
Disclosed in the present embodiment in tower crane revolution vortex controller, charging circuit 30 can adopt topological shown in Fig. 3, but and
Do not limit to.It include the first voltage stabilizing IC U1, the second electric capacity C2, the second NPN type triode VT2, PNP type triode VT3, the 6th
Resistance R6, the 7th resistance R7, the 8th resistance R8 and the 9th resistance R9, wherein：
Voltage stabilizing IC is the three terminal device with reference edge Ref, negative electrode Cathode and anode A node, can with Multiple Type
Choosing, such as TL431, LMV431 etc.；
The anode A node ground connection of the first voltage stabilizing IC U1, the 6th resistance R6 of its negative electrode Cathode Jing connect current rectifying and wave filtering circuit
20 outlet side (input side of the outlet side of current rectifying and wave filtering circuit 20 and charging circuit 30 mentioned above is same point, therefore
Equally with VCC1 as labelling in Fig. 3), its reference edge Ref Jing the second electric capacity C2 meet the negative electrode Cathode of the first voltage stabilizing IC U1；
The colelctor electrode of the second NPN type triode VT2 meets VCC1, and its base stage meets the negative electrode Cathode of the first voltage stabilizing IC U1,
The 7th resistance R7 of Jing and the 8th resistance R8 are grounded its emitter stage successively；
The junction point of the 7th resistance R7 and the 8th resistance R8 meets the reference edge Ref of the first voltage stabilizing IC U1；
The emitter stage of PNP type triode VT3 connects the emitter stage of the second NPN type triode VT2, the 9th resistance R9 of its base stage Jing
Ground connection, its colelctor electrode meet VCC2.
In charging circuit shown in Fig. 3, the first voltage stabilizing IC U1, the second electric capacity C2, the second NPN type triode VT2, the 6th
Resistance R6, the 7th resistance R7 and the 8th resistance R8 constitute mu balanced circuit, and its operation principle is：Second NPN type triode VT2 is led
After logical, just having electric current and flowing through the 8th resistance R8 increases the pressure drop on the 8th resistance R8, when the pressure drop on the 8th resistance R8 (i.e.
Voltage difference between the reference edge Ref and anode A node of the first voltage stabilizing IC U1) reference voltage more than the first voltage stabilizing IC U1 when,
First voltage stabilizing IC U1 are turned on；First voltage stabilizing IC U1 conductings subtract can the base voltage (electric current) of the second NPN type triode VT2
Little, then the electric current that the 8th resistance R8 is drawn from VCC1 accordingly will reduce, the pressure drop on the 8th resistance R8 also can be dropped therewith
It is low；Finally, this negative feedback process can make the stable reference voltage in the first voltage stabilizing IC U1 of the pressure drop on the 8th resistance R8, that
Now the emitter voltage of the second NPN type triode VT2 also reaches stable.
PNP type triode VT3 and the 9th resistance R9 constitute constant-current circuit, and the constant-current circuit is connected on the output of mu balanced circuit
Side, the transmitting best base current of PNP type triode VT3 are constant, therefore the transmitting best colelctor electrode electricity of PNP type triode VT3
Stream is constant, realizes constant current output.
It can be seen that, charging circuit 30 realizes the constant voltage constant current charging to accumulator 40 using mu balanced circuit and constant-current circuit.
Additionally, preferably, charging circuit 30 may also include Full Charge Capacity display circuit, the Full Charge Capacity display circuit is by the first light-emitting diodes
Pipe LED1, the tenth resistance R10, the second voltage stabilizing IC U2, the 11st resistance R11 and the 12nd resistance R12 are constituted, wherein：
11st resistance R11 and the 12nd resistance R12 are serially connected between VCC2 and ground；The reference edge of the second voltage stabilizing IC U2
Ref connects the junction point of the 11st resistance R11 and the 12nd resistance R12, and its anode A node is grounded, its negative electrode Cathode Jing successively
First LED 1 and the tenth resistance R10 connect the emitter stage of PNP type triode VT3.
The operation principle of the Full Charge Capacity display circuit is：By rationally arranging the 11st resistance R11 and the 12nd resistance
Dividing ratios on R12 so that during 40 charging complete of accumulator, the pressure drop on the 12nd resistance R12 is just above the second voltage stabilizing
The reference voltage of IC U2, then now the second voltage stabilizing IC U2 conductings, the first LED 1 are shinny, realize accumulator
40 Full Charge Capacity display functions.
When electrical network is normal, tower crane adopts electrical network current supply circuit to power for eddy current coil, traditional electrical network current supply circuit bag
Transformator, full-wave rectifying circuit and the relay being connected in turn between electrical network and eddy current coil is included, wherein：The relay
Break-make is by outside Frequency Converter Control；Line voltage sends into eddy current coil Jing after transformer pressure-reducing, full-wave rectifying circuit rectification, obtains
Eddy current voltage it is too little do not reach braking effect, it is too big the goods for hanging load to be caused because brake force is excessive to rock again, can also be to whole
Individual tower crane produces harmful stress impact.In this regard, traditional counte-rplan are selected by selecting a limited number of tap of transformator
Determine eddy current voltage, but due under the program eddy current voltage can only saltatory change, therefore be difficult find most suitable braking point, reach
To best braking effect.
To solve above-mentioned technical problem, the present embodiment is designed as follows to tower crane revolution vortex controller, to realize electricity
Net current supply circuit output voltage it is stepless adjustable, i.e., eddy current voltage is stepless adjustable, and referring to Fig. 4, electrical network current supply circuit L1 includes
The controlled rectification circuit 60 being serially connected between electrical network and eddy current coil and the second relay KA2 (when braking, converter control
Make the second relay KA2 disconnections；When braking is needed, Frequency Converter Control the second relay KA2 adhesives), due to controlled rectification electricity
The stepless output of voltage can be realized by changing the size of the angle of flow in road 60, therefore solve asking for original electrical network current supply circuit presence
Topic.Certainly, the program is equally applicable to the revolution vortex controller of tower crane shown in Fig. 1.
Controlled rectification circuit 60 can adopt all-wave controlled rectification circuit or half-wave controlled rectification circuit, be reduce hardware into
This, the preferred half-wave controlled rectification circuit of the present embodiment.
The half-wave controlled rectification circuit using topology shown in Fig. 5, but can not limit to.It include the 4th diode D4,
First IGCT PUTT1, the second IGCT SCR1, the first stabilivolt ZD1, the 13rd resistance R13, the 14th resistance R14, the tenth
Five resistance R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, adjustable resistance POT1, the 3rd electric capacity C3 and
5th diode D5, wherein：
The high voltage input AC1 that the 13rd resistance R13 of anode Jing of the 4th diode D4 get access to grid, its negative electrode Jing successively
14th resistance R14 and the 15th resistance R15 connect the first end of the 16th resistance R16；
The low-voltage input AC2 of the second termination electrical network of the 16th resistance R16；
Control pole G of the first IGCT PUTT1 connects the junction point of the 14th resistance R14 and the 15th resistance R15, its negative electrode
The 18th resistance R18 of K Jing connect the first end of the 16th resistance R16, and the 3rd electric capacity C3 of its anode A Jing connects the 16th resistance R16's
First end, at the same anode A also Jing adjustable resistances POT1 and the 17th resistance R17 connect the negative electrode of the 4th diode D4 successively；
Control pole G of the second IGCT SCR1 meets the negative electrode K of the first IGCT PUTT1, and its negative electrode K connects the 16th resistance
The first end of R16, the high voltage input AC1 that its anode A gets access to grid；
First stabilivolt ZD1 is connected in parallel on the 14th resistance R14 and the 15th resistance R15 two ends, and its anode is connected on the 15th
Resistance R15 sides, its negative electrode are connected on the 14th resistance R14 sides；
The anode of the first stabilivolt ZD1 meets first end K1 of the second relay KA2, the second end K2 of the second relay KA2
The low-voltage input AC2 for getting access to grid；Eddy current coil meets K2 and AC2；
The anode of the 6th diode D6 connects second end of the 16th resistance R16, and its negative electrode connects the first of the 16th resistance R16
End.
The operation principle of the half-wave controlled rectification circuit is：When the line voltage of input is positive half-wave, the 13rd is electric
There is electric current to flow through on resistance R13, the 4th diode D4, the 14th resistance R14, the 15th resistance R15 and the 16th resistance R16；Lead
When leading to certain angle, the total partial pressure on the 15th resistance R15 and the 16th resistance R16 can reach the threshold of the first stabilivolt ZD1
Threshold voltage, such as 16V, now the first stabilivolt ZD1 starts reverse-conducting and voltage stabilizing is in 16V；Meanwhile, the 13rd resistance of electrical network Jing
R13, the 4th diode D4, the 14th resistance R14 provide driving current, and Jing the tenth to control pole G of the first IGCT PUTT1
Three resistance R13, the 4th diode D4, the 17th resistance R17, adjustable resistance POT1 charge to the 3rd electric capacity C3；
When the 3rd electric capacity C3 both end voltages charge to certain value, the first IGCT PUTT1 is turned on and is provided driving current
To the second IGCT SCR1 so that the second IGCT SCR1 is also turned on therewith；
When the line voltage of input is to bear half-wave, the second IGCT SCR1 automatically shuts down, the half-wave controlled rectification electricity
Road Non voltage output；16th resistance R16 is returned for providing fictitious load to the second IGCT SCR1 when eddy current coil is not connect
Road, the input and output voltage waveform of the half-wave controlled rectification circuit refer to Fig. 6；
Preferably, referring also to Fig. 5, the half-wave controlled rectification circuit may also include the 6th diode D6, the 19th electric
Resistance R19, the 20th resistance R20, the second stabilivolt ZD2 and the second LED 2, wherein：
The anode of the 5th diode D5 connects second end of the 16th resistance R16, and its negative electrode connects the second of the second relay KA2
End K2；
The 19th resistance R19 of negative electrode Jing of the second stabilivolt ZD2 meet the second end K2 of the second relay KA2, and its anode connects
AC2；20th resistance R20 and the second LED 2 are connected in parallel on the second stabilivolt ZD2 two ends after connecting again.
6th diode D6 plays afterflow function, provides continuous current circuit to eddy current coil when the second relay KA2 disconnects；
R19, R20, ZD2 and LED2 are constituted and are indicated loop, and when eddy current coil is braked, the second LED 2 is powered shinny, convenient
Maintenance and inspection.
Preferably, referring also to Fig. 5, the half-wave controlled rectification circuit may also include the varistor for being arranged at grid side
VR1, plays lightning protection effect.
Preferably, referring also to Fig. 5, the half-wave controlled rectification circuit of stating may also include the fuse for being arranged at grid side
FU, as short circuit and the protector of overcurrent.
In embodiments of the present invention, the half-wave controlled rectification circuit output voltage of vortex controller is adjustable, meets different systems
Dynamic equipment voltage requirements, while adjustable brake force size, makes braking more steady.
In addition it should be noted that the second relay KA2 may be provided at tower crane turn round vortex controller inside, at this moment
The control circuit of the second relay KA2 coils is drawn and is gone.Second relay KA2 can also be arranged on tower crane revolution vortex control
At this moment the contact of the second relay KA2 need to only be introduced by the outside of device processed.The tower crane revolution vortex controller
Binding post schematic diagram is as shown in fig. 7, the high-low voltage inputs that get access to grid respectively of terminal AC1～AC2, terminal K1～K2 difference
Meet the contact two ends of the second relay KA2, the terminal K2～indirect eddy current coils of AC2.
Additionally, the embodiment of the invention also discloses a kind of tower crane system, it includes that any one disclosed above tower crane is turned round
The eddy current coil of vortex controller and slew gear motor.Certainly, the tower crane system can also include connection accumulator and tower
The brake coil for hanging footbrake switch, in storage battery power supply partial failure as standby, so as to further improve
The safety coefficient and reliability of tower crane braking procedure.
In sum, it is of the invention by cut-in relay and control relay circuit on storage battery power supply loop, and
Detect the unexpected power-off of electrical network or when breaking down, automatically control the normally opened contact adhesive of the relay, so as to unexpected in electrical network
Power-off continues power supply a period of time to eddy current coil using accumulator in the case of breaking down, it is sufficient to allow tower crane normally to make
It is dynamic.Compared to prior art, the present invention can be automatically switched in grid cut-off or after breaking down on storage battery power supply loop,
The handoff procedure improves the safety coefficient and reliability of tower crane braking procedure without the need for manual operation.
In this specification, each embodiment is described by the way of progressive, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in the case of the spirit or scope without departing from the embodiment of the present invention in other embodiments.Therefore,
The embodiment of the present invention is not intended to be limited to the embodiments shown herein, and be to fit to principles disclosed herein and
The consistent most wide scope of features of novelty.
Claims (9)
1. a kind of tower crane turns round vortex controller, it is characterised in that supply including the electrical network being connected in parallel between electrical network and eddy current coil
Electrical circuit and storage battery power supply loop, wherein, the storage battery power supply loop includes：
Transformator between electrical network and eddy current coil, current rectifying and wave filtering circuit, charging circuit, accumulator and are sequentially connected with one by one
One relay；
And the control relay circuit being connected with the control end of first relay, in the unexpected power-off of electrical network or generation
The normally opened contact closure of first relay is controlled during failure；
Wherein, the control relay circuit includes the first diode, the second diode, first resistor, second resistance, the 3rd electric
Resistance, the 4th resistance, the 5th resistance, the first electric capacity, the first NPN type triode and NMOS tube, specifically：
The anode of first diode connects the input side of the charging circuit, its negative electrode first resistor described in Jing and described successively
First capacity earth；Second resistance described in Jing and the 3rd resistor are grounded the input side of the charging circuit successively；
The junction point of the first resistor and first electric capacity the 4th resistance and the 5th resistance eutral grounding described in Jing successively；
The grounded emitter of first NPN type triode, its colelctor electrode meet the company of the 4th resistance and the 5th resistance
Contact, its base stage connect the junction point of the second resistance and the 3rd resistor；
The source ground of the NMOS tube, its grid connect the junction point of the 4th resistance and the 5th resistance, and its drain electrode connects
The anode of second diode；
The negative electrode of second diode connects the outlet side of the charging circuit；The coils from parallel connection of coils of first relay is described
Second diode two ends.
2. tower crane according to claim 1 turns round vortex controller, it is characterised in that the control relay circuit is also wrapped
Include the reverse-filling diode positioned at the accumulator outlet side.
3. tower crane according to claim 1 turns round vortex controller, it is characterised in that the charge circuit includes that first is steady
Pressure IC, the second electric capacity, the second NPN type triode, PNP type triode, the 6th resistance, the 7th resistance, the 8th resistance and the 9th are electric
Resistance, wherein：
The plus earth of the first voltage stabilizing IC, the 6th resistance described in its negative electrode Jing connect the outlet side of the current rectifying and wave filtering circuit,
Second electric capacity described in its reference edge Jing connects the negative electrode of the first voltage stabilizing IC；
The colelctor electrode of second NPN type triode connects the outlet side of the current rectifying and wave filtering circuit, and it is steady that its base stage connects described first
The negative electrode of pressure IC, its emitter stage the 7th resistance and the 8th resistance eutral grounding described in Jing successively；
The junction point of the 7th resistance and the 8th resistance connects the reference edge of the first voltage stabilizing IC；
The emitter stage of the PNP type triode connects the emitter stage of second NPN type triode, the 9th resistance described in its base stage Jing
Ground connection, its colelctor electrode connect the outlet side of the accumulator.
4. tower crane according to claim 3 turns round vortex controller, it is characterised in that the charging circuit also includes first
Light emitting diode, the tenth resistance, the second voltage stabilizing IC, the 11st resistance and the 12nd resistance, wherein：
It is connected in parallel between the outlet side and ground of the charging circuit after 11st resistance and the 12nd resistance concatenation；
The reference of the second voltage stabilizing IC terminates the junction point of the 11st resistance and the 12nd resistance, and its anode connects
Ground, the first light emitting diode described in Jing and the tenth resistance connect the emitter stage of the PNP type triode to its negative electrode successively.
5. tower crane according to claim 1 turns round vortex controller, it is characterised in that the electrical network current supply circuit includes string
The controlled rectification circuit being connected between electrical network and eddy current coil and the second relay.
6. tower crane according to claim 5 turns round vortex controller, it is characterised in that the controlled rectification circuit is half-wave
Controlled rectification circuit.
7. tower crane according to claim 6 turns round vortex controller, it is characterised in that the half-wave controlled rectification circuit bag
Include the 4th diode, the first IGCT, the second IGCT, the first stabilivolt, the 13rd resistance, the 14th resistance, the 15th electric
Resistance, the 16th resistance, the 17th resistance, the 18th resistance, adjustable resistance, the 3rd electric capacity and the 5th diode, wherein：
The high voltage input that 13rd resistance described in the anode Jing of the 4th diode gets access to grid, its negative electrode is successively described in Jing
14th resistance and the 15th resistance connect the first end of the 16th resistance；
The low-voltage input of the second termination electrical network of the 16th resistance；
The control pole of first IGCT meets the junction point of the 14th resistance and the 15th resistance, its negative electrode Jing institutes
The first end that the 18th resistance connects the 16th resistance is stated, the 3rd electric capacity described in its anode Jing connects the of the 16th resistance
One end, at the same its anode also adjustable resistance described in Jing and the 17th resistance connect the negative electrode of the 4th diode successively；
The control pole of second IGCT connects the negative electrode of first IGCT, and its negative electrode connects the first of the 16th resistance
End, the high voltage input that its anode gets access to grid；
First stabilivolt is connected in parallel on the 14th resistance and the 15th resistance two ends, and its anode is connected on the described tenth
Five resistance sides, its negative electrode are connected on the 14th resistance side；
The anode of first stabilivolt connects the first end of second relay, the second termination electrical network of second relay
Low-voltage input；
The anode of the 5th diode connects the second end of the 16th resistance, and its negative electrode connects the first of the 16th resistance
End.
8. tower crane according to claim 7 turns round vortex controller, it is characterised in that the half-wave controlled rectification circuit is also
Including the 6th diode, the 19th resistance, the 20th resistance, the second stabilivolt and the second light emitting diode, wherein：
The anode of the 5th diode connects the second end of the 16th resistance, and its negative electrode connects the second of second relay
End；
19th resistance described in the negative electrode Jing of second stabilivolt connects the second end of second relay, and its anode gets access to grid
Low-voltage input；Second stabilivolt is connected in parallel on again after 20th resistance and second light emitting diode series connection
Two ends.
9. a kind of tower crane system, it is characterised in that including the tower crane revolution vortex controller any one of claim 1-8
With the eddy current coil of slew gear motor.
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| CN201510003950.4A CN104528559B (en) | 2015-01-05 | 2015-01-05 | Tower crane system and tower crane rotation vortex flow controller |
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| CN104803306B (en) * | 2015-05-15 | 2017-01-04 | 深圳市英威腾电气股份有限公司 | A kind of tower crane slew gear eddy current brake systems |
| CN107991018B (en) * | 2017-12-20 | 2023-09-15 | 西安航天计量测试研究所 | Negative step force generation system, thrust measurement dynamic characteristic calibration device and method |
| CN112491115A (en) * | 2020-11-25 | 2021-03-12 | 四川长虹电器股份有限公司 | Power supply management circuit for standby rechargeable battery |
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| CN2932798Y (en) * | 2006-07-10 | 2007-08-08 | 蒋宝民 | Automatic switching device of backup power supply of traffic lights |
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| CN2063717U (en) * | 1990-01-10 | 1990-10-10 | 湘潭市特种电机研究所 | Ac stepless voltage and speed regulating asynchronous motor |
| CN2865112Y (en) * | 2005-12-20 | 2007-01-31 | 莫平顺 | Tower type crane slewing gear brake |
| JP5667915B2 (en) * | 2011-03-29 | 2015-02-12 | 株式会社Ｎｔｔファシリティーズ | DC power supply |
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| CN1843885A (en) * | 2006-03-21 | 2006-10-11 | 牡丹江建工机械有限责任公司 | Slewing normally disengaged brake circuit of tower crane having emergent braking function in power turn-off situation |
| CN2932798Y (en) * | 2006-07-10 | 2007-08-08 | 蒋宝民 | Automatic switching device of backup power supply of traffic lights |
| CN201536269U (en) * | 2009-09-11 | 2010-07-28 | 洪冲祥 | Emergency power supply for illuminating lamp |
| CN203865911U (en) * | 2014-06-06 | 2014-10-08 | 南通市达欣工程股份有限公司 | Electrical emergency control circuit of tower crane |
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