CN104528559A - Tower crane system and tower crane rotation vortex flow controller - Google Patents
Tower crane system and tower crane rotation vortex flow controller Download PDFInfo
- Publication number
- CN104528559A CN104528559A CN201510003950.4A CN201510003950A CN104528559A CN 104528559 A CN104528559 A CN 104528559A CN 201510003950 A CN201510003950 A CN 201510003950A CN 104528559 A CN104528559 A CN 104528559A
- Authority
- CN
- China
- Prior art keywords
- resistance
- connects
- tower crane
- relay
- diode
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (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 eddy current control technology field, more particularly, relate to a kind of tower crane system and tower crane revolution vortex controller.
Background technology
Tower crane is weight-lifting equipment the most frequently used on building ground, is turned round the parts such as vortex controller, arm, swing type mechanism motor form by tower crane.When needs are braked, electrical network continues to power to the eddy current coil of swing type mechanism motor by tower crane revolution vortex controller, whereby braking force is applied to arm, but when the unexpected power-off of electrical network or et out of order (as failure conditions such as electrical network phase shortage or instant power-downs), eddy current coil lost efficacy without electricity, and the arm being lifted with weight probably leads to a disaster because of the inswept building site of inertia.
Traditional counte-rplan are on the basis in above-mentioned mains supply loop, increase the storage battery power supply loop that connects storage battery and brake coil again, this storage battery power supply loop is serially connected with footbrake switch, control arm when the unexpected power-off of electrical network or et out of order by driver's footbrake switch suddenly to stop, but the program requires higher to the capability of reaction of driver, there is accident potential.
Summary of the invention
In view of this, the invention provides a kind of tower crane system and tower crane revolution vortex controller, to ensure that tower crane can normal brake application when the unexpected power-off of electrical network or et out of order.
A kind of tower crane revolution vortex controller, comprise and be connected in parallel on mains supply loop between electrical network and eddy current coil and storage battery power supply loop, wherein, described storage battery power supply loop comprises:
Be connected to the voltage transformer between electrical network and eddy current coil, current rectifying and wave filtering circuit, charge circuit, storage battery and the first relay one by one in turn;
And the control relay circuit to be connected with the control end of described first relay, close for the open contact controlling described first relay when the unexpected power-off of electrical network or et out of order.
Wherein, described control relay circuit comprises the first diode, the second diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the first NPN type triode and NMOS tube, wherein:
The anode of described first diode connects the input side of described charge circuit, and its negative electrode is successively through described first resistance and described first capacity earth; The input side of described charge circuit is successively through described second resistance and described 3rd resistance eutral grounding;
The point of connection of described first resistance and described first electric capacity is successively through described 4th resistance and described 5th resistance eutral grounding;
The grounded emitter of described first NPN type triode, its collecting electrode connects the point of connection of described 4th resistance and described 5th resistance, and its base stage connects the point of connection of described second resistance and described 3rd resistance;
The source ground of described NMOS tube, its grid connects the point of connection of described 4th resistance and described 5th resistance, and its drain electrode connects the anode of described second diode;
The negative electrode of described second diode connects the outgoing side of described charge circuit; The coils from parallel connection of coils of described first relay is at described second diode two ends.
Alternatively, described control relay circuit also comprises the reverse-filling diode being positioned at described storage battery outgoing side.
Wherein, described charge circuit comprises the first voltage stabilizing 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 resistance, wherein:
The plus earth of described first voltage stabilizing IC, its negative electrode connects the outgoing side of described current rectifying and wave filtering circuit through described 6th resistance, and its reference edge connects the negative electrode of described first voltage stabilizing IC through described second electric capacity;
The collecting electrode of described second NPN type triode connects the outgoing side of described current rectifying and wave filtering circuit, and its base stage connects the negative electrode of described first voltage stabilizing IC, and its emitter is successively through described 7th resistance and described 8th resistance eutral grounding;
The point of connection of described 7th resistance and described 8th resistance connects the reference edge of described first voltage stabilizing IC;
The emitter of described PNP type triode connects the emitter of described second NPN type triode, and its base stage is through described 9th resistance eutral grounding, and its collecting electrode connects the outgoing side of described storage battery.
Alternatively, described charge circuit also comprises the first light-emitting diode, the tenth resistance, the second voltage stabilizing IC, the 11 resistance and the 12 resistance, wherein:
Between the outgoing side being connected in parallel on described charge circuit after described 11 resistance and described 12 resistance are connected in series and ground;
The point of connection of the 11 resistance and described 12 resistance described in the reference termination of described second voltage stabilizing IC, its plus earth, its negative electrode connects the emitter of described PNP type triode successively through described first light-emitting diode and described tenth resistance.
Wherein, described mains supply loop comprises and is serially connected in controlled rectification circuit between electrical network and eddy current coil and the second relay.
Wherein, described controlled rectification circuit is half-wave controlled rectification circuit.
Wherein, described half-wave controlled rectification circuit comprises the 4th diode, the first thyristor, the second thyristor, the first stabilivolt, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, adjustable resistance, the 3rd electric capacity and the 5th diode, wherein:
The high potential input end that the anode of described 4th diode gets access to grid through described 13 resistance, its negative electrode connects the first end of described 16 resistance successively through described 14 resistance and described 15 resistance;
The low voltage input end of the second termination electrical network of described 16 resistance;
The control pole of described first thyristor connects the point of connection of described 14 resistance and described 15 resistance, its negative electrode connects the first end of described 16 resistance through described 18 resistance, its anode connects the first end of described 16 resistance through described 3rd electric capacity, and its anode also connects the negative electrode of described 4th diode successively through described adjustable resistance and described 17 resistance simultaneously;
The control pole of described second thyristor connects the negative electrode of described first thyristor, and its negative electrode connects the first end of described 16 resistance, the high potential input end that its anode gets access to grid;
Described first stabilivolt is connected in parallel on described 14 resistance and described 15 resistance two ends, and its anode is connected on described 15 resistance side, and its negative electrode is connected on described 14 resistance side;
The anode of described first stabilivolt connects the first end of described second relay, the low voltage input end of the second termination electrical network of described second relay;
The anode of described 6th diode connects the second end of described 16 resistance, and its negative electrode connects the first end of described 16 resistance.
Alternatively, described half-wave controlled rectification circuit also comprises the 6th diode, the 19 resistance, the 20 resistance, the second stabilivolt and the second light-emitting diode, wherein:
The anode of described 5th diode connects the second end of described 16 resistance, and its negative electrode connects the second end of described second relay;
The negative electrode of described second stabilivolt connects the second end of described second relay, the low voltage input end that its anode gets access to grid through described 19 resistance; Described second stabilivolt two ends are connected in parallel on again after described 20 resistance and described second light-emitting diode series connection.
A kind of tower crane system, comprises the eddy current coil of any one tower crane above-mentioned revolution vortex controller and swing type mechanism motor.
As can be seen from above-mentioned technical scheme, the present invention is by cut-in relay and control relay circuit on storage battery power supply loop, and when the unexpected power-off of electrical network being detected or et out of order time automatically control the open contact adhesive of described relay, thus utilize storage battery to continue power supply a period of time to eddy current coil when the unexpected power-off of electrical network or et out of order, be enough to allow tower crane normal brake application.Compared to prior art, the present invention can automatically switch on storage battery power supply loop after grid cut-off or et out of order, and this handoff procedure, without the need to manual operation, improves safety factor and the reliability of tower crane braking procedure.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of tower crane revolution 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 the embodiment of the present invention disclosed another tower crane revolution 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;
The input and output voltage mode chart of Fig. 6 a kind of half-wave controlled rectification circuit disclosed in the embodiment of the present invention;
The connection terminal schematic diagram of Fig. 7 a kind of tower crane revolution vortex controller disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the invention discloses a kind of tower crane revolution vortex controller, to ensure that tower crane can normal brake application when the unexpected power-off of electrical network or et out of order, comprise and be connected in parallel on mains supply loop L1 between electrical network (at least connecing two live wires in three phase network) and eddy current coil and storage battery power supply loop L2; Storage battery power supply loop L2 comprises voltage transformer 10, current rectifying and wave filtering circuit 20, charge circuit 30, storage battery 40, first relay K A1 and control relay circuit 50, wherein:
Voltage transformer 10, current rectifying and wave filtering circuit 20, charge circuit 30, storage battery 40 and the first relay K A1 are connected between electrical network and eddy current coil one by one in turn;
Control relay circuit 50 is connected with the control end of the first relay K A1, closes for the open contact controlling the first relay K A1 when the unexpected power-off of electrical network or et out of order (as failure conditions such as electrical network phase shortage or instant power-downs).
When electrical network is normal, line voltage is powered to eddy current coil by mains supply loop L1, and the line voltage of voltage transformer 10 to input carries out step-down process simultaneously, and flows to current rectifying and wave filtering circuit 20 by processing the low-voltage AC obtained; Current rectifying and wave filtering circuit 20 sends into charge circuit 30 after converting the low-voltage AC received to stable low-voltage DC; Charge circuit 30 charges for storage battery 40 afterwards, until storage battery 40 charging complete.Visible, described tower crane revolution vortex controller has storage battery automatic charging function.
In addition, the present embodiment also accesses the first relay K A1 on the L2 of storage battery power supply loop, control relay circuit 50 controls the open contact adhesive of the first relay K A1 automatically when the unexpected power-off of electrical network or et out of order being detected, thus utilize storage battery 40 to continue power supply a period of time to eddy current coil when the unexpected power-off of electrical network or et out of order, be enough to allow tower crane normal brake application.Compared to prior art, the present embodiment can automatically switch to storage battery power supply loop L2 after grid cut-off or et out of order, and this handoff procedure, without the need to manual operation, improves safety factor and the reliability of tower crane braking procedure.
In tower crane revolution vortex controller disclosed in the present embodiment, control relay circuit 50 can adopt topology shown in Fig. 2, is not limited thereto.It comprises the first diode D1, the second diode D2, the first resistance R1, the second resistance R2, the 3rd 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 (in the accompanying drawing disclosed in the present embodiment, the coil of the first relay K A1 and the same alphabetic character KA1 of open contact mark; The input side of charge circuit 30 and the same alphabetic character VCC1 of input side voltage mark; The outgoing side of charge circuit 30 and outgoing side voltage, be also positive pole and the cathode voltage of storage battery 40, mark with same alphabetic character VCC2):
The anode of the first diode D1 meets the input side VCC1 of charge circuit 30, and its negative electrode is successively through the first resistance R1 and the first electric capacity C1 ground connection; VCC1 is successively through the second resistance R2 and the 3rd resistance R3 ground connection; The point of connection of the first resistance R1 and the first electric capacity C1 is successively through the 4th resistance R4 and the 5th resistance R5 ground connection;
The grounded emitter of the first NPN type triode VT1, its collecting electrode connects the point of connection of the 4th resistance R4 and the 5th resistance R5, and its base stage connects the point of connection of the second resistance R2 and the 3rd resistance R3;
The source ground of NMOS tube Q1, its grid connects the point of connection of the 4th resistance R4 and the 5th resistance R5, and its drain electrode connects the anode of the second diode D2;
The negative electrode of the second diode D2 meets the outgoing side VCC2 of charge circuit 30; The coils from parallel connection of coils of the first relay K A1 is at the second diode D2 two ends.
The principle of work of control relay circuit 50 shown in Fig. 2 is:
When electrical network is normal, VCC1 charges to the first electric capacity C1 by the first diode D1 and the first resistance R1, makes the first electric capacity C1 obtain left positive right negative charging valtage; The bleeder circuit that VCC1 is consisted of the second resistance R2 and the 3rd resistance R3 simultaneously drives the first NPN type triode VT1 conducting; After VT1 conducting, the grid potential of NMOS tube Q1 is dragged down, and NMOS tube Q1 turns off; NMOS tube Q1 closes the coil no power of the first relay K A1 that has no progeny, and its open contact is in off-state, and storage battery 40 can not be powered to eddy current coil.
When grid cut-off or et out of order, the first electric capacity C1 is discharged by the 4th resistance R4 and the 5th resistance R5, and the grid potential of NMOS tube Q1 is driven high, NMOS tube Q1 conducting; The coil electricity of the first relay K A1 after NMOS tube Q1 conducting, its open contact adhesive, storage battery 40 starts to power to eddy current coil.The capacitance of the first electric capacity C1 and the resistance size of the 4th resistance R4 and the 5th resistance R5, what determine NMOS tube Q1 opens duration, also namely the duration of storage battery 40 connected by grid cut-off or et out of order backwash coil, and the braking duration that can need according to tower crane when practical application is rationally arranged.
Wherein, due to the reverse cut-off effect of the first diode D1, the base stage that the discharge current of the first electric capacity C1 can not flow to the first NPN type triode VT1 makes the first NPN type triode VT1 conducting, therefore also the grid potential of NMOS tube Q1 would not be dragged down after the first NPN type triode VT1 conducting.Second diode D2 provides continuous current circuit to its coil in the moment that the open contact of the first relay K A1 disconnects, and NMOS tube Q1 overvoltage can be avoided to burn.
In addition, still see Fig. 2, when the first relay K A1 being closed by mistake for preventing control relay circuit 50 et out of order, the energy coming from mains supply loop pours in down a chimney and causes storage battery 40 to damage into storage battery 40, and control relay circuit 50 also can comprise: the reverse-filling diode D3 being positioned at storage battery 40 outgoing side.
Finally it should be noted that, in topology disclosed in Fig. 2, the first NPN type triode VT1 can be replaced NMOS tube, and NMOS tube Q1 can be replaced NPN type triode.
In tower crane revolution vortex controller disclosed in the present embodiment, charge circuit 30 can adopt topology shown in Fig. 3, but does not limit to.It comprises 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, has Multiple Type optional, as TL431, LMV431 etc.;
The anode A node ground connection of the first voltage stabilizing IC U1, its negative electrode Cathode connects the outgoing side of current rectifying and wave filtering circuit 20 through the 6th resistance R6, and (outgoing side of current rectifying and wave filtering circuit 20 and the input side of the above-mentioned charge circuit 30 mentioned are same point, therefore in Fig. 3 same VCC1 as mark), its reference edge Ref meets the negative electrode Cathode of the first voltage stabilizing IC U1 through the second electric capacity C2;
The collecting 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, and its emitter is successively through the 7th resistance R7 and the 8th resistance R8 ground connection;
The point of connection of the 7th resistance R7 and the 8th resistance R8 meets the reference edge Ref of the first voltage stabilizing IC U1;
The emitter of PNP type triode VT3 connects the emitter of the second NPN type triode VT2, and its base stage is through the 9th resistance R9 ground connection, and its collecting electrode meets VCC2.
In charge circuit shown in Fig. 3, 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, its principle of work is: after the second NPN type triode VT2 conducting, just have electric current to flow through the 8th resistance R8 the pressure drop on the 8th resistance R8 is increased, when the reference voltage of the pressure drop (voltage difference namely between the reference edge Ref of the first voltage stabilizing IC U1 and anode A node) on the 8th resistance R8 more than the first voltage stabilizing IC U1, the first voltage stabilizing IC U1 conducting; First voltage stabilizing IC U1 conducting can make the base tension (electric current) of the second NPN type triode VT2 reduce, and the electric current that so the 8th resistance R8 draws from VCC1 will correspondingly reduce, and the pressure drop on the 8th resistance R8 also can decrease; Finally, this negative feedback process can make the pressure drop on the 8th resistance R8 be stabilized in the reference voltage of the first voltage stabilizing IC U1, and so now the emitter voltage of the second NPN type triode VT2 also reaches stable.
PNP type triode VT3 and the 6th resistance R9 constitutes constant-current circuit, this constant-current circuit is connected on the outgoing side of mu balanced circuit, the emitter of PNP type triode VT3 is constant to base current, and therefore the emitter of PNP type triode VT3 is constant to collector current, achieves constant current output.
Visible, charge circuit 30 utilizes mu balanced circuit and constant-current circuit to achieve constant voltage constant current charging to storage battery 40.In addition, as preferably, charge circuit 30 also can comprise Full Charge Capacity display circuit, and this Full Charge Capacity display circuit is made up of the first LED 1, the tenth resistance R10, the second voltage stabilizing IC U2, the 11 resistance R11 and the 12 resistance R12, wherein:
11 resistance R11 and the 12 resistance R12 is serially connected between VCC2 and ground; The reference edge Ref of the second voltage stabilizing ICU2 connects the point of connection of the 11 resistance R11 and the 12 resistance R12, its anode A node ground connection, and its negative electrode Cathode connects the emitter of PNP type triode VT3 successively through the first LED 1 and the tenth resistance R10.
The principle of work of described Full Charge Capacity display circuit is: by rationally arranging the dividing ratios on the 11 resistance R11 and the 12 resistance R12, when making storage battery 40 charging complete, pressure drop on 12 resistance R12 is just higher than the reference voltage of the second voltage stabilizing IC U2, so now the second voltage stabilizing IC U2 conducting, first LED 1 is shinny, achieves storage battery 40 Full Charge Capacity Presentation Function.
When electrical network is normal, tower crane adopts mains supply loop to be that eddy current coil is powered, traditional mains supply loop comprises the voltage transformer, full-wave rectifying circuit and the relay that are connected in turn between electrical network and eddy current coil, wherein: the break-make of described relay is by outside Frequency Converter Control; Line voltage sends into eddy current coil after transformer pressure-reducing, full-wave rectifying circuit rectification, the too little out of reach braking effect of the eddy current voltage obtained, and can cause again too greatly hanging the goods carried and rock, also can produce harmful stress impact to whole tower crane because braking force is excessive.To this, traditional counte-rplan carry out selected eddy current voltage by selecting the limited several taps of voltage transformer, but due to eddy current voltage under the program can only great-jump-forward change, be therefore difficult to find most suitable braking point, reach best braking effect.
For solving the problems of the technologies described above, the present embodiment designs as follows to tower crane revolution vortex controller, to realize the stepless adjustable of mains supply output voltage loop, namely eddy current voltage is stepless adjustable, see Fig. 4, mains supply loop L1 comprises and is serially connected in controlled rectification circuit 60 between electrical network and eddy current coil and the second relay K A2 (when without the need to braking, Frequency Converter Control second relay K A2 disconnects; When needs are braked, Frequency Converter Control second relay K A2 adhesive), because controlled rectification circuit 60 realizes the stepless output of voltage by the size changing conduction angle, therefore solve original mains supply loop Problems existing.Certainly, the program is equally applicable to the revolution of tower crane shown in Fig. 1 vortex controller.
Controlled rectification circuit 60 can adopt all-wave controlled rectification circuit or half-wave controlled rectification circuit, for reducing hardware cost, the preferred half-wave controlled rectification circuit of the present embodiment.
Described half-wave controlled rectification circuit can adopt topology shown in Fig. 5, but does not limit to.It comprises the 4th diode D4, the first thyristor PUTT1, the second thyristor SCR1, the first stabilivolt ZD1, the 13 resistance R13, the 14 resistance R14, the 15 resistance R15, the 16 resistance R16, the 17 resistance R17, the 18 resistance R18, adjustable resistance POT1, the 3rd electric capacity C3 and the 5th diode D5, wherein:
The high potential input end AC1 that the anode of the 4th diode D4 gets access to grid through the 13 resistance R13, its negative electrode connects the first end of the 16 resistance R16 successively through the 14 resistance R14 and the 15 resistance R15;
The low voltage input end AC2 of the second termination electrical network of the 16 resistance R16;
The control pole G of the first thyristor PUTT1 connects the point of connection of the 14 resistance R14 and the 15 resistance R15, its negative electrode K connects the first end of the 16 resistance R16 through the 18 resistance R18, its anode A connects the first end of the 16 resistance R16 through the 3rd electric capacity C3, and anode A also connects the negative electrode of the 4th diode D4 successively through adjustable resistance POT1 and the 17 resistance R17 simultaneously;
The control pole G of the second thyristor SCR1 meets the negative electrode K of the first thyristor PUTT1, and its negative electrode K connects the first end of the 16 resistance R16, the high potential input end AC1 that its anode A gets access to grid;
First stabilivolt ZD1 is connected in parallel on the 14 resistance R14 and the 15 resistance R15 two ends, and its anode is connected on the 15 resistance R15 side, and its negative electrode is connected on the 14 resistance R14 side;
The anode of the first stabilivolt ZD1 meets the first end K1 of the second relay K A2, the low voltage input end AC2 that the second end K2 of the second relay K A2 gets access to grid; Eddy current coil meets K2 and AC2;
The anode of the 6th diode D6 connects second end of the 16 resistance R16, and its negative electrode connects the first end of the 16 resistance R16.
The principle of work of described half-wave controlled rectification circuit is: when the line voltage inputted is positive half-wave, the 13 resistance R13, the 4th diode D4, the 14 resistance R14, the 15 resistance R15 and the 16 resistance R16 have electric current to flow through; When being conducting to certain angle, the total dividing potential drop on the 15 resistance R15 and the 16 resistance R16 can reach the threshold voltage of the first stabilivolt ZD1, as 16V, now the first stabilivolt ZD1 start reverse-conducting and voltage stabilizing at 16V; Simultaneously, electrical network provides drive current through the 13 resistance R13, the 4th diode D4, the 14 resistance R14 to the control pole G of the first thyristor PUTT1, and charges to the 3rd electric capacity C3 through the 13 resistance R13, the 4th diode D4, the 17 resistance R17, adjustable resistance POT1;
When the 3rd electric capacity C3 both end voltage charges to certain value, the first thyristor PUTT1 conducting also provides drive current to the second thyristor SCR1, makes the second thyristor SCR1 also conducting thereupon;
When the line voltage inputted is for negative half-wave, the second thyristor SCR1 automatically shuts down, described half-wave controlled rectification circuit Non voltage output; 16 resistance R16 is used for providing fictitious load loop when not connecing eddy current coil to the second thyristor SCR1, and the input and output voltage waveform of described half-wave controlled rectification circuit is with reference to figure 6;
As preferably, still see Fig. 5, described half-wave controlled rectification circuit also can comprise the 6th diode D6, the 19 resistance R19, the 20 resistance R20, the second stabilivolt ZD2 and the second LED 2, wherein:
The anode of the 5th diode D5 connects second end of the 16 resistance R16, and its negative electrode meets the second end K2 of the second relay K A2;
The negative electrode of the second stabilivolt ZD2 meets the second end K2 of the second relay K A2 through the 19 resistance R19, its anode meets AC2; The second stabilivolt ZD2 two ends are connected in parallel on again after 20 resistance R20 and the series connection of the second LED 2.
6th diode D6 plays afterflow function, provides continuous current circuit when the second relay K A2 disconnects to eddy current coil; R19, R20, ZD2 and LED2 form instruction loop, and when eddy current coil is braked, the second LED 2 is energized shinny, convenient for maintaining and inspection.
As preferably, still see Fig. 5, described half-wave controlled rectification circuit also can comprise the pizo-resistance VR1 being arranged at grid side, plays lightning protection effect.
As preferably, still see Fig. 5, described in state half-wave controlled rectification circuit and also can comprise the fuse FU being arranged at grid side, as the protector of short circuit and excess current.
In embodiments of the present invention, the half-wave controlled rectification circuit output voltage of vortex controller is adjustable, meets different braking equipment voltage requirements, and adjustable braking force size, makes braking more steady simultaneously.
In addition it should be noted that, the second relay K A2 can be arranged on the inside of tower crane revolution vortex controller, at this moment the control circuit of the second relay K A2 coil is drawn and goes.Second relay K A2 also can be arranged on the outside of tower crane revolution vortex controller, at this moment only the contact of the second relay K A2 need be introduced.As shown in Figure 7, the high-low voltage input end that terminal AC1 ~ AC2 gets access to grid respectively, terminal K1 ~ K2 connects the two ends, contact of the second relay K A2 to the connection terminal schematic diagram of described tower crane revolution vortex controller respectively, the indirect eddy current coil of terminal K2 ~ AC2.
In addition, the embodiment of the invention also discloses a kind of tower crane system, it comprises the eddy current coil of above-mentioned disclosed any one tower crane revolution vortex controller and swing type mechanism motor.Certainly, described tower crane system also can comprise the footbrake switch of the brake coil connecting storage battery and tower crane, in order to when storage battery power supply partial failure as subsequent use, thus improve safety factor and the reliability of tower crane braking procedure further.
In sum, the present invention is by cut-in relay and control relay circuit on storage battery power supply loop, and the open contact adhesive of described relay is automatically controlled when the unexpected power-off of electrical network or et out of order being detected, thus utilize storage battery to continue power supply a period of time to eddy current coil when the unexpected power-off of electrical network or et out of order, be enough to allow tower crane normal brake application.Compared to prior art, the present invention can automatically switch on storage battery power supply loop after grid cut-off or et out of order, and this handoff procedure, without the need to manual operation, improves safety factor and the reliability of tower crane braking procedure.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments.Therefore, the embodiment of the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a tower crane revolution vortex controller, is characterized in that, comprise and be connected in parallel on mains supply loop between electrical network and eddy current coil and storage battery power supply loop, wherein, described storage battery power supply loop comprises:
Be connected to the voltage transformer between electrical network and eddy current coil, current rectifying and wave filtering circuit, charge circuit, storage battery and the first relay one by one in turn;
And the control relay circuit to be connected with the control end of described first relay, close for the open contact controlling described first relay when the unexpected power-off of electrical network or et out of order.
2. tower crane revolution vortex controller according to claim 1, it is characterized in that, described control relay circuit comprises the first diode, the second diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the first NPN type triode and NMOS tube, wherein:
The anode of described first diode connects the input side of described charge circuit, and its negative electrode is successively through described first resistance and described first capacity earth; The input side of described charge circuit is successively through described second resistance and described 3rd resistance eutral grounding;
The point of connection of described first resistance and described first electric capacity is successively through described 4th resistance and described 5th resistance eutral grounding;
The grounded emitter of described first NPN type triode, its collecting electrode connects the point of connection of described 4th resistance and described 5th resistance, and its base stage connects the point of connection of described second resistance and described 3rd resistance;
The source ground of described NMOS tube, its grid connects the point of connection of described 4th resistance and described 5th resistance, and its drain electrode connects the anode of described second diode;
The negative electrode of described second diode connects the outgoing side of described charge circuit; The coils from parallel connection of coils of described first relay is at described second diode two ends.
3. tower crane revolution vortex controller according to claim 2, it is characterized in that, described control relay circuit also comprises the reverse-filling diode being positioned at described storage battery outgoing side.
4. tower crane revolution vortex controller according to claim 1, it is characterized in that, described charge circuit comprises the first voltage stabilizing 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 resistance, wherein:
The plus earth of described first voltage stabilizing IC, its negative electrode connects the outgoing side of described current rectifying and wave filtering circuit through described 6th resistance, and its reference edge connects the negative electrode of described first voltage stabilizing IC through described second electric capacity;
The collecting electrode of described second NPN type triode connects the outgoing side of described current rectifying and wave filtering circuit, and its base stage connects the negative electrode of described first voltage stabilizing IC, and its emitter is successively through described 7th resistance and described 8th resistance eutral grounding;
The point of connection of described 7th resistance and described 8th resistance connects the reference edge of described first voltage stabilizing IC;
The emitter of described PNP type triode connects the emitter of described second NPN type triode, and its base stage is through described 9th resistance eutral grounding, and its collecting electrode connects the outgoing side of described storage battery.
5. tower crane revolution vortex controller according to claim 4, it is characterized in that, described charge circuit also comprises the first light-emitting diode, the tenth resistance, the second voltage stabilizing IC, the 11 resistance and the 12 resistance, wherein:
Between the outgoing side being connected in parallel on described charge circuit after described 11 resistance and described 12 resistance are connected in series and ground;
The point of connection of the 11 resistance and described 12 resistance described in the reference termination of described second voltage stabilizing IC, its plus earth, its negative electrode connects the emitter of described PNP type triode successively through described first light-emitting diode and described tenth resistance.
6. tower crane according to claim 1 revolution vortex controller, is characterized in that, described mains supply loop comprises and is serially connected in controlled rectification circuit between electrical network and eddy current coil and the second relay.
7. tower crane revolution vortex controller according to claim 6, it is characterized in that, described controlled rectification circuit is half-wave controlled rectification circuit.
8. tower crane revolution vortex controller according to claim 7, it is characterized in that, described half-wave controlled rectification circuit comprises the 4th diode, the first thyristor, the second thyristor, the first stabilivolt, the 13 resistance, the 14 resistance, the 15 resistance, the 16 resistance, the 17 resistance, the 18 resistance, adjustable resistance, the 3rd electric capacity and the 5th diode, wherein:
The high potential input end that the anode of described 4th diode gets access to grid through described 13 resistance, its negative electrode connects the first end of described 16 resistance successively through described 14 resistance and described 15 resistance;
The low voltage input end of the second termination electrical network of described 16 resistance;
The control pole of described first thyristor connects the point of connection of described 14 resistance and described 15 resistance, its negative electrode connects the first end of described 16 resistance through described 18 resistance, its anode connects the first end of described 16 resistance through described 3rd electric capacity, and its anode also connects the negative electrode of described 4th diode successively through described adjustable resistance and described 17 resistance simultaneously;
The control pole of described second thyristor connects the negative electrode of described first thyristor, and its negative electrode connects the first end of described 16 resistance, the high potential input end that its anode gets access to grid;
Described first stabilivolt is connected in parallel on described 14 resistance and described 15 resistance two ends, and its anode is connected on described 15 resistance side, and its negative electrode is connected on described 14 resistance side;
The anode of described first stabilivolt connects the first end of described second relay, the low voltage input end of the second termination electrical network of described second relay;
The anode of described 6th diode connects the second end of described 16 resistance, and its negative electrode connects the first end of described 16 resistance.
9. tower crane revolution vortex controller according to claim 8, it is characterized in that, described half-wave controlled rectification circuit also comprises the 6th diode, the 19 resistance, the 20 resistance, the second stabilivolt and the second light-emitting diode, wherein:
The anode of described 5th diode connects the second end of described 16 resistance, and its negative electrode connects the second end of described second relay;
The negative electrode of described second stabilivolt connects the second end of described second relay, the low voltage input end that its anode gets access to grid through described 19 resistance; Described second stabilivolt two ends are connected in parallel on again after described 20 resistance and described second light-emitting diode series connection.
10. a tower crane system, is characterized in that, the tower crane comprised according to any one of claim 1-9 turns round the eddy current coil of vortex controller and swing type mechanism motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003950.4A CN104528559B (en) | 2015-01-05 | 2015-01-05 | Tower crane system and tower crane rotation vortex flow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510003950.4A CN104528559B (en) | 2015-01-05 | 2015-01-05 | Tower crane system and tower crane rotation vortex flow controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104528559A true CN104528559A (en) | 2015-04-22 |
| CN104528559B CN104528559B (en) | 2017-04-26 |
Family
ID=52844258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510003950.4A Active CN104528559B (en) | 2015-01-05 | 2015-01-05 | Tower crane system and tower crane rotation vortex flow controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104528559B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803306A (en) * | 2015-05-15 | 2015-07-29 | 深圳市英威腾电气股份有限公司 | Eddy current braking system of tower crane swing mechanism |
| CN107991018A (en) * | 2017-12-20 | 2018-05-04 | 西安航天计量测试研究所 | Negative step force generating system, thrust measurement dynamic characteristic caliberating 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN2865112Y (en) * | 2005-12-20 | 2007-01-31 | 莫平顺 | Tower type crane slewing gear brake |
| 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 |
| JP2012210029A (en) * | 2011-03-29 | 2012-10-25 | Ntt Facilities Inc | Dc power supply |
| 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 |
-
2015
- 2015-01-05 CN CN201510003950.4A patent/CN104528559B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| JP2012210029A (en) * | 2011-03-29 | 2012-10-25 | Ntt Facilities Inc | Dc power supply |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803306A (en) * | 2015-05-15 | 2015-07-29 | 深圳市英威腾电气股份有限公司 | Eddy current braking system of tower crane swing mechanism |
| CN107991018A (en) * | 2017-12-20 | 2018-05-04 | 西安航天计量测试研究所 | Negative step force generating system, thrust measurement dynamic characteristic caliberating device and method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104528559B (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103687217B (en) | A kind of switch dimming LED drive circuit | |
| CN107637169A (en) | Can delay lighting circuit and device | |
| CN103228087B (en) | A kind of constant current anti-flicker circuit, method and apply the LED driver of this circuit | |
| CN102638024B (en) | Interruption line protector | |
| CN104528559A (en) | Tower crane system and tower crane rotation vortex flow controller | |
| CN104555764A (en) | Rotary braking system and tower crane control system | |
| CN103280767B (en) | The braking resistor protection circuit of converter and method | |
| CN204206534U (en) | A kind of LED drive circuit and electronic equipment | |
| CN205689473U (en) | AC fan Novel electrodeless alignment circuit | |
| CN201374649Y (en) | Power supply circuit and air conditioner provided with same | |
| CN205092997U (en) | High -power dimming controller | |
| CN207283541U (en) | A kind of current loop communication circuit | |
| CN203872387U (en) | Power off non-stroboscopic second gear dimmable LED driving power supply | |
| CN205611031U (en) | Illumination lamp driving circuit with function of gradually going out | |
| CN210579355U (en) | Single live wire control circuit of diode | |
| CN204256517U (en) | A kind of proving installation of electric locomotive power controling box | |
| CN202424125U (en) | Phase sequence regulator for three-phase power supply | |
| CN105813273B (en) | The method, apparatus and lighting apparatus of a kind of anti-lamp group over-voltage and under-voltage work | |
| CN205491291U (en) | Light -emitting diode (LED) driving circuit | |
| CN209357673U (en) | A kind of silicon-controlled output control relay circuit and motor control power panel | |
| CN204761141U (en) | Overload protection device double loop power supply automatic switch -over circuit | |
| CN104427677A (en) | Low-voltage safety switching circuit for lamps | |
| CN202551473U (en) | Automatic lighting controller adopting double D-type flip-flops | |
| CN201766341U (en) | Overvoltage protection air switch | |
| CN208508826U (en) | A kind of comprehensive power control circuit and control system for video monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |