CN105129617A - Power source integrated control method and system and crane - Google Patents
Power source integrated control method and system and crane Download PDFInfo
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- CN105129617A CN105129617A CN201510465459.3A CN201510465459A CN105129617A CN 105129617 A CN105129617 A CN 105129617A CN 201510465459 A CN201510465459 A CN 201510465459A CN 105129617 A CN105129617 A CN 105129617A
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Abstract
The invention discloses a power source integrated control method and system and a crane. The system comprises a power source protection unit, a logic control unit, a communication unit, an adaptation unit and a printed circuit board, wherein the power source protection unit is connected with a power source through the adaptation unit, judges whether circuits of all electricity use units have an overloading phenomenon and cuts off the overloaded circuit when the circuit has an overloading phenomenon; the logic control unit is connected with the power source protection unit through the adaptation unit and distributes power output to all the electricity use units according to control signals; the adaptation unit comprises a circuit band and a plugging terminal; the printed circuit board integrates the power source protection unit, the logic control unit, the communication unit and the adaptation unit. The power source integrated control method and system and the crane are high in integration degree, the circuits are simplified, and only a few connecting wires are needed. Overloading protection can be carried out on the circuits while power source distribution is realized, installation is easy, and the protective level is improved.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of power supply integrated control method, system and hoisting crane.
Background technology
What require along with the development of Crane Industry and hoisting crane High Performance, traveling comfort, safety, hommization improves constantly, and the consumer on hoisting crane gets more and more.Multiple parts such as current hoister in large tonnage comprises control cabin, turntable, principal arm, auxiliary, tower arm, surpassed, electric system is complicated, and relay and circuit breaker quantity can reach at most 45-50 altogether, and wiring quantity reaches hundreds of even thousands of.Power control system, as the core component of electric system of getting on the bus, is the key of design of electrical system and product repairing.
Power control system of the prior art adopts self-control wire harness, dispersed arrangement form, and level of integrated system is not high, comprises following shortcoming: 1) circuit breaker, relay are by the horizontally-arranged arrangement of guide rail, and upper and lower outlet, to take volume large; 2) owing to lacking Integration Design thought, cause volume large and heavy, difficulty is installed, is unfavorable for car load integral layout and light-weight design; 3) assemble loaded down with trivial details, wiring easily makes mistakes; 4) degree of protection is low, under the foggy environment of humidity, easily cause line fault; 5) trouble free diagnosis function, cannot realize the condition monitoring of power-supply system.Therefore a kind of new power control system of market demand solves the problems referred to above.
Summary of the invention
The invention provides a kind of power supply integrated control method, system and hoisting crane, integrated level is high, circuit simplifies, wiring is few, while realizing power distribution, can carry out overload protection to circuit, be easy to install, promote degree of protection.
According to an aspect of the present invention, provide a kind of power supply integrated control system, comprise power protection unit, logic control element, communication unit, adapter unit and printed circuit board (PCB), wherein:
Power protection unit is connected with power supply by adapter unit, judges whether each power unit place circuit occurs overload, when there is overload circuit, cuts off overload circuit;
Logic control element is connected with power protection unit by adapter unit, is assigned on each power unit according to control signal by power stage;
Adapter unit comprises circuit band and inserting terminal;
Communication unit communicates to connect between logic control element and master controller and between logic control element and power unit;
Printed circuit board (PCB) integrated power supply protected location, logic control element, communication unit and adapter unit.
In one embodiment, also comprise indicator lamp, wherein:
Indicator lamp is arranged between power protection unit andlogic control unit, and when overload circuit appears in power protection unit judges, carries out fault warning display.
In one embodiment, also comprise master controller and telltale, wherein:
When overload circuit appears in power protection unit judges, send breakdown signal to logic control element;
Breakdown signal is sent to master controller by communication unit and adapter unit by logic control element;
Breakdown signal is sent to telltale by master controller;
Telltale display faulty condition.
In one embodiment, communication unit comprises integrated CAN interface, passes through CAN between logic control element and master controller and between logic control element and power unit, uses J1939 agreement to communicate.
In one embodiment, the printed circuit board (PCB) in above-described embodiment is that double-layer and double-side covers copper printed circuit board (PCB), wherein:
Ground floor printed circuit board (PCB) is provided with power protection unit and logic control element;
Second layer printed circuit board (PCB) is provided with communication unit and inserting terminal.
In one embodiment, the printed circuit board (PCB) of above-described embodiment is individual plates or two block plate, utilizes welding conductive pole to realize circuit and be communicated with between two block plate.
In one embodiment, printed circuit board (PCB) is provided with strut member, and strut member is provided with lid, between lid and layer shell, be provided with seal ring.
In one embodiment, power protection unit comprises circuit breaker, is arranged on the circuit of each power unit place, for judging whether each power unit place circuit occurs overload, when occurring overload circuit, cuts off overload circuit.
In one embodiment, logic control element comprises relay line bag and microcontroller, wherein:
Relay line bag is arranged on the circuit of each power unit place, and one end is connected to power protection unit, and the other end is connected to power unit, for power stage being assigned to each power unit according to control signal;
Microcontroller, for receiving the control signal that master controller sends, and sends to relay line bag by control signal; Also for when receiving breakdown signal, breakdown signal is sent to master controller.
According to a further aspect in the invention, provide a kind of hoisting crane, comprise the power supply integrated control system in above-mentioned any embodiment.
According to another aspect of the invention, provide a kind of power supply integrated control method, comprising:
Power protection unit is connected with power supply by adapter unit;
Logic control element is connected with power protection unit by adapter unit;
Communicated to connect by communication unit between logic control element and master controller and between logic control element and power unit;
By on a printed circuit integrated to power protection unit, logic control element, communication unit and adapter unit.
In one embodiment, said method comprises described power protection unit judges each power unit place circuit and whether occurs overload, when there is overload circuit, cuts off described overload circuit;
Fault warning display is carried out by indicator lamp.
In one embodiment, said method comprises: whether power protection unit judges each power unit place circuit occurs overload, and when there is overload circuit, cut off overload circuit, logic control element sends breakdown signal;
Breakdown signal is sent to master controller by communication unit and adapter unit by logic control element;
Breakdown signal is sent to telltale by master controller;
Telltale display faulty condition.
In one embodiment, communication unit comprises integrated CAN interface, passes through CAN between logic control element and master controller and between logic control element and power unit, uses J1939 agreement to communicate.
In one embodiment, in the method for above-mentioned any embodiment, printed circuit board (PCB) is that double-layer and double-side covers copper printed circuit board (PCB), and ground floor printed circuit board (PCB) is provided with power protection unit and logic control element;
Second layer printed circuit board (PCB) is provided with communication unit and inserting terminal.
The invention discloses a kind of power supply integrated control method, system and hoisting crane, integrated level is high, circuit simplifies, wiring is few, while realizing power distribution, can carry out overload protection to circuit, be easy to install, promote degree of protection.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing of embodiment or required use in describing 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 the schematic diagram of a power supply integrated control system of the present invention embodiment.
Fig. 2 is the schematic diagram of another embodiment of power supply integrated control system of the present invention.
Fig. 3 is the schematic diagram of a power supply integrated control method of the present invention embodiment.
Fig. 4 is an embodiment schematic diagram of overload protection in power supply integrated control method of the present invention.
Fig. 5 is the schematic diagram of another embodiment of overload protection in power supply integrated control method 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.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.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.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Fig. 1 is the schematic diagram of power supply integrated control system of the present invention 100 1 embodiments; as shown in Figure 1; comprise power protection unit 101, logic control element 102, communication unit 103, adapter unit (not shown) and printed circuit board (PCB) (PCB; PrintedCircuitBoard; not shown), wherein:
Power protection unit 101 is connected with power supply 104 by adapter unit, judges whether each power unit 106 place circuit occurs overload, when there is overload circuit, cuts off overload circuit.
Such as, power protection unit 101 can comprise circuit breaker or insurance, when there is overload circuit, and circuit breaker or safety shear overload circuit.
Logic control element 102 is connected with power protection unit 101 by adapter unit, is assigned on each power unit 106 by power stage according to control signal.
Preferably, logic control element 102 comprises smart power device and/or PCB relay, for according to control signal Logic judgment, drives power unit 106.
Adapter unit comprises circuit band and inserting terminal.
Preferably, the inserting terminal of adapter unit is the insert pocket possessing avoiding misinsertion function.
Communication unit 103 communicates to connect between logic control element 102 and master controller 105 and between logic control element 102 and power unit 106.
Preferably, communication unit 103 comprises integrated CAN (ControllerAreaNetwork, controller local area network) interface, pass through CAN between logic control element 102 and master controller 105 and between logic control element 102 and power unit 106, use J1939 agreement to communicate.
Printed circuit board (PCB) integrated power supply protected location 101, logic control element 102, communication unit 103 and adapter unit.
In one embodiment, as shown in Figure 1, N number of power unit 106i is comprised, wherein 1≤i≤N, N >=1.Then total N bar circuit gives power unit 106i power stage respectively.Adapter unit comprises circuit band and inserting terminal; power protection unit 101, between logic control element 102 and communication unit 103, and communication unit 103 is connected with inserting terminal with the circuit band all by adapter unit between power supply 104 with master controller 105, power protection unit 101.Power protection unit 101, logic control element 102, communication unit 103 and adapter unit are on a printed circuit integrated.
When power protection unit 101 judges that overload appears in power unit 106i place circuit, cut off the circuit at power unit 106i place, system is protected.
Because each unit is on a printed circuit integrated, break away from self-control wire harness and connected, therefore, integrated level is high, circuit has simplified, wiring is few, while realizing power distribution, can carry out overload protection to circuit, be easy to install, promote degree of protection.
Those skilled in the art are scrutable is, the power unit 106 related in above-described embodiment, includes but not limited to: the bus apparatus etc. such as combination instrument, air-conditioning, loudspeaker, illuminating lamp, Cigarette lighter, proximity switch, oil pressure sensor, length measurement sensor, angular transducer, level indicator etc. and controller, limiter of moment, Ethernet switch, handle, wireless remote control, engine block, wireless remote control module, telltale, coder, field bus instrument.
Fig. 2 is the schematic diagram of power supply integrated control system of the present invention 200 1 embodiments; as shown in Figure 2; comprise power protection unit 201, logic control element 202, communication unit 203, adapter unit (not shown), printed circuit board (PCB) (not shown) and indicator lamp 207 wherein, power protection unit 201, logic control element 202 and communication unit 203 is same or similar with power protection unit 101, logic control element 102 and communication unit 103 in Fig. 1.
Indicator lamp 207i is arranged between power protection unit 201 andlogic control unit 202, on the circuit at power unit 206i place.When power protection unit 201 judges the circuit overloads at power unit 206i place, indicator lamp 207i carries out fault warning display.Such as, when the circuit working at power unit 206i place is normal, indicator lamp 207i shows green; When overload occurs, indicator lamp 207i shows redness, so that staff's Timeliness coverage overload circuit, carries out safeguarding or keeping in repair.
In one embodiment, power supply integrated control system 200 also comprises master controller 205 and telltale 207.
When power protection unit 201 judges that overload appears in the circuit at power unit 206i place, send breakdown signal to logic control element 202.
Breakdown signal is sent to master controller 205 by communication unit 203 and adapter unit by logic control element 202.
Breakdown signal is sent to telltale 208 by master controller 205, and telltale 208 shows faulty condition, is convenient to staff and finds faulty line more intuitively.
Preferably, power protection unit 201 comprises N number of circuit breaker 2011, is arranged at respectively on the circuit of power unit 206i place, judges whether power unit 206i place circuit occurs overload, when there is overload circuit, cuts off overload circuit.
Preferably, logic control element 202 comprises microcontroller 2022 (MCU, MicrocontrollerUnit) and N number of relay line bag 2021.
Relay line bag 2021 is arranged on the circuit of each power unit 206i place, and one end is connected to power protection unit 201, and the other end is connected to power unit 206i, for power stage being assigned to each power unit 206i according to control signal.
In one embodiment, relay line bag 2021 comprises smart power device and/or PCB relay, for according to control signal Logic judgment, drives power unit 206.
Microcontroller 2022 receives the control signal that master controller 205 sends, and control signal is sent to relay line bag 2021; When receiving breakdown signal, breakdown signal is sent to master controller 205.
Preferably, communication unit 203 comprises integrated CAN interface, passes through CAN between microcontroller 2022 and master controller 205 and between microcontroller 2022 and relay line bag 2021, uses J1939 agreement to communicate.Microcontroller 2022 is adopted to realize data communication as a node in CAN network.Carry out control relay switch by reception J1939 agreement CAN information frame and realize power stage.Possess voltage monitoring function, sent state (fusing, damage, the leakage are inserted) report of wire fuse and relay by J1939CAN information frame.Can realize mounting special programming device in CAN by J1939 boot protocol, the software program of adjustment or change object module and configuration file, thus can wire harness be reduced and increase diagnosis function, improve system reliability further.
The system of power supply integrating control of the present invention, integrated level is high, circuit simplifies, wiring is few, while realizing power distribution, can carry out overload protection to circuit, is easy to install, promote degree of protection.
Preferably, the printed circuit board (PCB) in above-described embodiment is that double-layer and double-side covers copper printed circuit board (PCB), and ground floor printed circuit board (PCB) is provided with power protection unit 201 and logic control element 202; Second layer printed circuit board (PCB) is provided with communication unit 203 and inserting terminal.
Concrete, the 1st layer of double-sided copper-clad printed circuit board (PCB) is used for meeting electric function requirement, arranges fuse, relay, microcontroller and other electronic devices and components covering distribution on copper printed circuit board (PCB) more.2nd layer of double-sided copper-clad printed circuit board (PCB) is used for meeting to be guided on wire harness by circuit, and this laminate will be arranged the inserting terminal docked with wire harness.
Preferably, can individual plates be adopted for different product circuit card, also by two pieces of circuit card superpositions, welding conductive pole can be utilized between two boards to realize circuit and be communicated with.Every block plate can one side wiring, also can double-sided wiring, can also multilayer wiring to meet complicated circuit needs.For avoiding the electromagnetic interference that on power supply integrated control system, big current line and relay contact adhesive cause system.Ground shield process to be done to high-frequency elements such as microcontroller reception, crystal oscillators; Place enough and suitable decoupling capacitance to relax the noise on bus plane and stratum in the power pin of each unit, increase at power unit end or relay contact end the interference that inductance and charge and discharge capacitance cause circuit to eliminate big current startup and stopping.
Preferably, printed circuit board (PCB) is provided with strut member, and strut member is provided with lid, between lid and layer shell, be provided with seal ring.
Preferably, seal ring adopts silaatic material, and shape adopts collapsible type.Support machine component, housing and lid adopt the engineering plastics of fire-proof high-temperature resistant, thus effectively improve degree of protection and the reliability of power supply integrated control system, are reduced in the fault rate of power supply integrating control circuit under moist foggy environment.
The system of power supply integrating control of the present invention, integrated level is high, circuit simplifies, wiring is few, can while realizing power distribution; overload protection is carried out to circuit, does not adopt self-control wire harness, the fault rate of effective minimizing system; improve efficiency of assembling, take volume little, be conducive to the space optimization of complete machine.
The invention also discloses a kind of hoisting crane of power supply integrating control, this hoisting crane comprises the power supply integrated control system in above-mentioned any embodiment, while realizing power distribution, can carry out overload protection to circuit, is easy to install, promote degree of protection.
Fig. 3 is the schematic diagram of an embodiment of power supply integrated control method of the present invention, and preferably, the method for the present embodiment can be performed by power supply integrated control system of the present invention, wherein:
Step 301, is connected power protection unit with power supply by adapter unit.
Step 302, is connected logic control element with power protection unit by adapter unit;
Step 303, is communicated to connect by communication unit between logic control element and master controller and between logic control element and power unit.
Step 304, by a printed circuit integrated to power protection unit, logic control element, communication unit and adapter unit.
The method of power supply integrating control of the present invention; by by a printed circuit integrated to power protection unit, logic control element, communication unit and adapter unit; improve integrated level, simplify circuit, reduce wiring; while realizing power distribution, overload protection can be carried out to circuit, not adopt self-control wire harness; the fault rate of effective minimizing system; improve efficiency of assembling, take volume little, be conducive to the space optimization of complete machine.
Fig. 4 is an embodiment schematic diagram of overload protection in power supply integrated control method of the present invention, and preferably, the method for the present embodiment can be performed by power supply integrated control system of the present invention, wherein:
Step 401, whether power protection unit judges each power unit place circuit there is overload, when there is overload circuit, cuts off overload circuit.
Step 402, carries out fault warning display by indicator lamp.Such as, when the circuit working at power unit place is normal, indicator lamp display is green; When overload occurs, indicator lamp display is red.
The method of power supply integrating control of the present invention, while realizing power distribution, can carry out actv. overload protection to circuit.By the mode of operation of indicator lamp instruction power unit place circuit, be convenient to staff's Timeliness coverage overload circuit, carry out safeguarding or keeping in repair.
Fig. 5 is another embodiment schematic diagram of overload protection in power supply integrated control method of the present invention, and preferably, the method for the present embodiment can be performed by power supply integrated control system of the present invention, wherein:
Step 501, whether power protection unit judges each power unit place circuit there is overload, and when there is overload circuit, cut off overload circuit, logic control element sends breakdown signal;
Step 502, breakdown signal is sent to master controller by communication unit and adapter unit by logic control element;
Step 503, breakdown signal is sent to telltale by master controller;
Step 504, telltale display faulty condition.
Preferably, communication unit comprises integrated CAN interface, passes through CAN between logic control element and master controller and between logic control element and power unit, uses J1939 agreement to communicate.
Preferably, printed circuit board (PCB) is that double-layer and double-side covers copper printed circuit board (PCB), and ground floor printed circuit board (PCB) is provided with power protection unit and logic control element; Second layer printed circuit board (PCB) is provided with communication unit and inserting terminal.
Those skilled in the art are scrutable by the present invention is, the method of the present embodiment can be carried out in conjunction with indicator lamp, and namely when there is overload circuit, indicator lamp carries out fault warning display, telltale also shows faulty condition, is convenient to staff and finds faulty line more fast, more intuitively.
The method of power supply integrating control of the present invention, system and hoisting crane; level of integrated system is high, circuit simplifies, wiring is few; can while realizing power distribution; overload protection is carried out to circuit; do not adopt self-control wire harness, the fault rate of effective minimizing system, improve efficiency of assembling; take volume little, be conducive to the space optimization of complete machine.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory (ROM), disk or CD etc.
Claims (15)
1. a power supply integrated control system, is characterized in that, comprises power protection unit, logic control element, communication unit, adapter unit and printed circuit board (PCB), wherein:
Described power protection unit is connected with power supply by described adapter unit, judges whether each power unit place circuit occurs overload, when there is overload circuit, cuts off described overload circuit;
Described logic control element is connected with described power protection unit by adapter unit, is assigned on each power unit according to control signal by power stage;
Described adapter unit comprises circuit band and inserting terminal;
Described communication unit communicates to connect between described logic control element and master controller and between described logic control element and power unit;
The integrated described power protection unit of described printed circuit board (PCB), described logic control element, described communication unit and described adapter unit.
2. system according to claim 1, is characterized in that, also comprises indicator lamp, wherein:
Described indicator lamp is arranged between described power protection unit and described logic control element, and when described overload circuit appears in described power protection unit judges, carries out fault warning display.
3. system according to claim 1, is characterized in that, also comprises master controller and telltale, wherein:
When described overload circuit appears in described power protection unit judges, send breakdown signal to described logic control element;
Described breakdown signal is sent to described master controller by described communication unit and described adapter unit by described logic control element;
Described breakdown signal is sent to described telltale by described master controller;
Described telltale display faulty condition.
4. system according to claim 1, it is characterized in that, described communication unit comprises integrated CAN interface, passes through CAN between described logic control element and described master controller and between described logic control element and power unit, uses J1939 agreement to communicate.
5., according to the arbitrary described system of claim 1-4, it is characterized in that, described printed circuit board (PCB) is that double-layer and double-side covers copper printed circuit board (PCB), wherein:
Printed circuit board (PCB) described in ground floor is provided with described power protection unit and described logic control element;
Printed circuit board (PCB) described in the second layer is provided with described communication unit and described inserting terminal.
6. according to the arbitrary described system of claim 1-4, it is characterized in that, described printed circuit board (PCB) is individual plates or two block plate, utilizes welding conductive pole to realize circuit and be communicated with between described pair of block plate.
7. system according to claim 6, is characterized in that, described printed circuit board (PCB) is provided with strut member, and described strut member is provided with lid, between described lid and layer shell, be provided with seal ring.
8. system according to claim 1, is characterized in that, described power protection unit comprises circuit breaker; be arranged on the circuit of described each power unit place; for judging whether each power unit place circuit occurs overload, when there is described overload circuit, cut off described overload circuit.
9. system according to claim 1, is characterized in that, described logic control element comprises relay line bag and microcontroller, wherein:
Described relay line bag is arranged on the circuit of described each power unit place, and one end is connected to power protection unit, and the other end is connected to described power unit, for power stage being assigned to each power unit according to control signal;
Described microcontroller, for receiving the described control signal that described master controller sends, and sends to described relay line bag by described control signal; Also for when receiving described breakdown signal, described breakdown signal is sent to described master controller.
10. a hoisting crane, is characterized in that, comprises the arbitrary described power supply integrated control system of claim 1-9.
11. 1 kinds of power supply integrated control methods, is characterized in that, comprising:
Power protection unit is connected with power supply by adapter unit;
Logic control element is connected with described power protection unit by adapter unit;
Communicated to connect by communication unit between described logic control element and master controller and between described logic control element and power unit;
By on a printed circuit integrated to described power protection unit, described logic control element, described communication unit and described adapter unit.
12. methods according to claim 11, is characterized in that, comprising:
Whether described power protection unit judges each power unit place circuit there is overload, when there is overload circuit, cuts off described overload circuit;
Fault warning display is carried out by indicator lamp.
13. methods according to claim 11, is characterized in that, comprising:
Whether described power protection unit judges each power unit place circuit there is overload, when there is overload circuit, cuts off described overload circuit, and described logic control element sends breakdown signal;
Described breakdown signal is sent to master controller by described communication unit and described adapter unit by described logic control element;
Described breakdown signal is sent to described telltale by described master controller;
Described telltale display faulty condition.
14. methods according to claim 13, is characterized in that, comprising:
Described communication unit comprises integrated CAN interface, passes through CAN between described logic control element and described master controller and between described logic control element and power unit, uses J1939 agreement to communicate.
15., according to claim 11 to 14 arbitrary described methods, is characterized in that, comprising:
Described printed circuit board (PCB) is that double-layer and double-side covers copper printed circuit board (PCB), and printed circuit board (PCB) described in ground floor is provided with described power protection unit and described logic control element;
Printed circuit board (PCB) described in the second layer is provided with described communication unit and described inserting terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510465459.3A CN105129617A (en) | 2015-07-31 | 2015-07-31 | Power source integrated control method and system and crane |
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| CN201510465459.3A CN105129617A (en) | 2015-07-31 | 2015-07-31 | Power source integrated control method and system and crane |
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Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |