CN201365225Y - Crane self-excitation brake control cabinet - Google Patents

Abstract

The utility model relates to a crane self-excitation brake control cabinet which comprises a control cabinet body, wherein a controller is connected with the exterior power supply of a main switch, the controller is also connected with an ascending contactor, a descending contactor, a first level cut resistance contactor, a second level cut resistance contactor, a third level cut resistance contactor and a pre-excitation current contactor; the pre-excitation current contactor is connected with the stator of a motor and a brake contactor, the rotor of the motor is connected with the first level cut resistance contactor, the second level cut resistance contactor and the third level cut resistance contactor; the crane self-excitation brake control cabinet has the advantages that the electric fault rate of crane is reduced, the electric cost of crane is reduced, the space occupation of electric part of crane is reduced, the hoisting electric performance is improved and the number of hoisting speed-regulation resistors is reduced.

Description

Crane self-excitation braking control cubicle

Technical field

The invention relates to a kind of in the crane lifting process, crane motor is carried out the self power generation speed-regulating control device of speed regulating control.

Background technology

At present, traditional crane self-excitation braking control cubicle, when starting because of the general control cabinet impulse current be the motor rated current 3-5 doubly, impulse current is big, and the common overcurrent relay of installing in this traditional crane control cubicle can only with cross 3-5 that flow valuve adjust in the motor rated current doubly more than, usually do not have protective effect like this during excessive current flow in motor, therefore exist the high defective of failure rate, this traditional crane control cubicle does not have overvoltage and under-voltage protection function simultaneously, might burn all contactor coils, even burn motor; Adopt a large amount of contactors, auxilliary contact and an air time-delay forming control system in this traditional crane control cubicle, to occur joint easily loosening for these control original papers in operating process, it is also aging easily that air time-delay head is gone up the air bag that uses, thereby reduce the reliability of crane lifting control cubicle.The controller of traditional crane lifting control cubicle is because of the components and parts that adopt are many, causes control circuit cost height, efficient is low, maintenance is inconvenient, bulky defective, and wiring bothers, and breaks down easily.

Summary of the invention

The purpose of the invention is to overcome the deficiency of prior art existence and a kind of electric failure rate of lifting that can reduce is provided, the electric cost of compression lifting, reduce the lifting electric part and take up space, the high speed governing Based Intelligent Control cabinet that hoists is braked in the intelligentized self-excitation of raising lifting electric part.

For achieving the above object, the technical scheme that the invention is adopted is: comprise the control cubicle cabinet,

It is characterized in that: at control cabinet middle controller, the power input of controller is connected by the external power source of circuit breaker and master switch, the power input of master switch is connected with external power source, the power output end of master switch is connected with the contactless for hoisting power input by the stator current transducer, be connected with decline contactor power input, be connected with the power input of braking contactor, the stator current input of controller is connected with the signal output part of stator current transducer, the rising signals output of controller is connected with the coil signal input of contactless for hoisting, the output of contactless for hoisting is connected with the power input of motor stator, be connected with the power input of decline contactor, the dropping signal output of controller is connected with the coil signal input of decline contactor, the power output end of the rotor of motor is connected with the power input of rectifier by rotor sensor, the signal output part of rotor sensor is connected with the rotor signal input part of intelligent controller, the positive output end of rectifier is by long string resistor, by the one-level resistor, by the secondary resistor, be connected with the negative input end line of rectifier by three grades of resistors, the power end that one-level is cut the resistance contactor is attempted by one-level resistor two ends, coil input end and the one-level of intelligent controller that one-level is cut the resistance contactor cut and hindered the contactor signal output part and be connected, secondary is cut the two ends that resistance contactor power end is attempted by the secondary resistor, the coil signal input that secondary is cut the resistance contactor is connected with the output that the secondary of intelligent controller is cut the resistance signal, cut resistance contactor power end and connect three grades of resistor two ends for three grades, cut for three grades of three grades of coil signal input and controllers of cutting the resistance contactor and hinder signal output part to being connected, the power input of pre-excitation contactor is connected with the power output end of master switch by the stator transducer, the power supply of pre-excitation contactor is exported an end and is connected with motor stator power input one end, the power supply output other end of pre-excitation contactor is connected by the negative input end of pre-excitation resistor with the pre-excitation rectifier, pre-excitation contactor coil signal input is connected with intelligent controller pre-excitation contactor signal output part, the positive output end of pre-excitation rectifier is connected with the power supply of the motor stator input other end, the power output end of braking contactor is connected with the power input of brake, the coil signal input of braking contactor is connected with the brake signal output of intelligent controller, and the master of controller makes signal input part be connected with the output signal of master controller.

Described controller comprises and packs circuit that this control circuit comprises control power circuit, signal processing circuit and output circuit.

The output circuit part annexation is: relay J ₄₃Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₃Pin two connect rectifier bridge DD ₇ Pin 3, rectifier bridge DD ₇Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₇The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A1, rectifier bridge DD ₇The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A2, relay J ₄₂Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₂Pin two connect rectifier bridge DD ₈ Pin 3, rectifier bridge DD ₈Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₈The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A1, rectifier bridge DD ₈The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A2, relay J ₄₁Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₁Pin two connect rectifier bridge DD ₉ Pin 3, rectifier bridge DD ₉Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₉The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _41A1, rectifier bridge DD ₉The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _41A2, relay J ₈Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₈Pin two connect rectifier bridge DD ₁₀ Pin 3, rectifier bridge DD ₁₀Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₁₀The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A1, rectifier bridge DD ₁₀The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A2, relay J ₁Pin one connect the power input terminal B of intelligent controller, relay J ₁Pin two connect the contactless for hoisting signal output terminal K of intelligent controller _1A1, relay J ₂Pin one connect the power input terminal B of intelligent controller, relay J ₂Pin two connect the decline contactor signal output terminal K of intelligent controller _2A1, relay J ₄Pin one connect the power input terminal B of intelligent controller, relay J ₄Pin two connect the signal output terminal K of intelligent controller pre-excitation contactor _4A1, relay J ₈Pin one connect the power input terminal B of intelligent controller, relay J ₈Pin two connect the signal output terminal K of intelligent controller exciting current contactor _8A1, intelligent controller power input terminal A connects intelligent controller contactless for hoisting signal output terminal K _1A2, connect intelligent controller decline contactor signal output terminal K _2A2, connect intelligent controller pre-excitation contactor signal output terminal K _4A2, connect intelligent controller braking contactor signal output terminal K _7A2

The invention has can reduce the electric failure rate of lifting, and compression lifting electric cost reduces the lifting electric part and takes up space, and the high speed governing Based Intelligent Control cabinet that hoists is braked in the low-cost crane self-excitation that improves lifting electric part scientific and technological content.

Description of drawings

Fig. 1 crane self-excitation braking control cubicle block diagram.

The power unit schematic diagram of Fig. 2 crane self-excitation braking control cubicle intelligent controller.

The signal processing circuit theory diagrams of Fig. 3 crane self-excitation braking control cubicle intelligent controller.

The output circuit theory diagrams of Fig. 4 crane self-excitation braking control cubicle intelligent controller

Embodiment

As shown in Figure 1, the invention comprises the control cubicle cabinet, at control cabinet middle controller 24, the power input of controller 24 is connected by the external power source of circuit breaker 19 with master switch 1, the power input of master switch 1 is connected with external power source, the power output end of master switch 1 is connected with contactless for hoisting 3 power inputs by stator current transducer 2, be connected with decline contactor 4 power inputs, be connected with the power input of braking contactor 20, the stator current input of controller 24 is connected with the signal output part of stator current transducer 2, the rising signals output of controller 24 is connected with the coil signal input of contactless for hoisting 3, the output of contactless for hoisting 3 is connected with the power input of motor stator 5, be connected with the power input of decline contactor 4, the dropping signal output of controller 24 is connected with the coil signal input of decline contactor 4, the power output end of the rotor 6 of motor is connected by the power input of rotor sensor 7 with rectifier 8, the signal output part of rotor sensor 7 is connected with the rotor signal input part of controller 24, the positive output end of rectifier 8 is by long string resistor 9, by one-level resistor 10, by secondary resistor 12, be connected with the negative input end line of rectifier 8 by three grades of resistors 14, the power end that one-level is cut resistance contactor 11 is attempted by one-level resistor 10 two ends, coil input end and the one-level of intelligent controller 24 that one-level is cut resistance contactor 11 cut and hindered the contactor signal output part and be connected, secondary is cut the two ends that resistance contactor 13 power ends are attempted by secondary resistor 12, the coil signal input that secondary is cut resistance contactor 13 is connected with the output that the secondary of controller 24 is cut the resistance signal, cut resistance contactor 15 power ends and connect three grades of resistor 14 two ends for three grades, cut for three grades of three grades of coil signal input and intelligent controllers 24 of cutting the resistance contactor and hinder signal output part to being connected, the power input of pre-excitation contactor 18 is connected by the power output end of stator transducer 2 with master switch 1, the power supply of pre-excitation contactor 18 is exported an end and is connected with motor stator 5 power inputs one end, the power supply output other end of pre-excitation contactor 18 is connected by the negative input end of pre-excitation resistor 17 with pre-excitation rectifier 16, pre-excitation contactor 18 coil signal inputs are connected with intelligent controller 24 pre-excitation contactor signal output parts, the positive output end of pre-excitation rectifier 16 is connected with the power supply input other end of motor stator 5, the power output end of braking contactor 20 is connected with the power input of brake 21, the coil signal input of braking contactor 20 is connected with the brake signal output of intelligent controller 24, and the master of controller 24 makes signal input part be connected with the output signal of master controller 23.

Described controller 24 comprises control circuit, and this control circuit comprises control power circuit, signal processing circuit and output circuit.

As shown in Figure 4, the output circuit part annexation is: relay J ₄₃Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₃Pin two connect rectifier bridge DD ₇ Pin 3, rectifier bridge DD ₇Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₇The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A1, rectifier bridge DD ₇The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A2, relay J ₄₂Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₂Pin two connect rectifier bridge DD ₈ Pin 3, rectifier bridge DD ₈Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₈The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A1, rectifier bridge DD ₈The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A2, relay J ₄₁Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₁Pin two connect rectifier bridge DD ₉ Pin 3, rectifier bridge DD ₉Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₉The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _41A1, rectifier bridge DD ₉The 2 pin one-level that connects intelligent controller cut resistance 1 signal output terminal K _41A2, relay J ₈Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₈Pin two connect rectifier bridge DD ₁₀ Pin 3, rectifier bridge DD ₁₀Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₁₀The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A1, rectifier bridge DD ₁₀The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A2, relay J ₁Pin one connect the power input terminal B of intelligent controller, relay J ₁Pin two connect the contactless for hoisting signal output terminal K of intelligent controller _1A1, relay J ₂Pin one connect the power input terminal B of intelligent controller, relay J ₂Pin two connect the decline contactor signal output terminal K of intelligent controller _2A1, relay J ₄Pin one connect the power input terminal B of intelligent controller, relay J ₄Pin two connect the signal output terminal K of intelligent controller pre-excitation contactor _4A1, relay J ₈Pin one connect the power input terminal B of intelligent controller, relay J ₈Pin two connect the signal output terminal K of intelligent controller exciting current contactor _8A1, intelligent controller power input terminal A connects intelligent controller contactless for hoisting signal output terminal K _1A2, connect intelligent controller decline contactor signal output terminal K _2A2, connect intelligent controller pre-excitation contactor signal output terminal K _4A2, connect intelligent controller braking contactor signal output terminal K _7A2

Claims (2)

1, a kind of crane self-excitation braking control cubicle, it comprises the control cubicle cabinet, it is characterized in that: in the control cabinet, controller (24) is installed, the power input of controller (24) is connected by the external power source of circuit breaker (19) with master switch (1), the power input of master switch (1) is connected with external power source, the power output end of master switch (1) is connected with contactless for hoisting (3) power input by stator current transducer (2), be connected with decline contactor (4) power input, be connected with the power input of braking contactor (20), the stator current input of intelligent controller (24) is connected with the signal output part of stator current transducer (2), the rising signals output of controller (24) is connected with the coil signal input of contactless for hoisting (3), the output of contactless for hoisting (3) is connected with the power input of motor stator (5), be connected with the power input of decline contactor (4), the dropping signal output of controller (24) is connected with the coil signal input of decline contactor (4), the power output end of the rotor of motor (6) is connected by the power input of rotor sensor (7) with rectifier (8), the signal output part of rotor sensor (7) is connected with the rotor signal input part of controller (24), the positive output end of rectifier (8) is by long string resistor (9), by one-level resistor (10), by secondary resistor (12), be connected by the negative input end line of three grades of resistors (14) with rectifier (8), the power end that one-level is cut resistance contactor (11) is attempted by one-level resistor (10) two ends, coil input end and the one-level of intelligent controller (24) that one-level is cut resistance contactor (11) cut and hindered the contactor signal output part and be connected, secondary is cut the two ends that resistance contactor (13) power end is attempted by secondary resistor (12), the coil signal input that secondary is cut resistance contactor (13) is connected with the output that the secondary of intelligent controller (24) is cut the resistance signal, cut resistance contactor (15) power end and connect three grades of resistors (14) two ends for three grades, three grades of three grades of coil signal input and intelligent controllers (24) of cutting the resistance contactor are cut and are hindered signal output part and be connected, the power input of pre-excitation contactor (18) is connected by the power output end of stator transducer (2) with master switch (1), the power supply of pre-excitation contactor (18) is exported an end and is connected with motor stator (5) power input one end, the power supply output other end of pre-excitation contactor (18) is connected by the negative input end of pre-excitation resistor (17) with pre-excitation rectifier (16), pre-excitation contactor (18) coil signal input is connected with intelligent controller (24) pre-excitation contactor signal output part, the positive output end of pre-excitation rectifier (16) is connected with the power supply input other end of motor stator (5), the power output end of braking contactor (20) is connected with the power input of brake (21), the coil signal input of braking contactor (20) is connected with the brake signal output of controller (24), and the master of controller (24) makes signal input part be connected with the output signal of master controller (23).

2, crane self-excitation braking control cubicle according to claim 1, it is characterized in that: described controller (24) comprises control circuit, this control circuit comprises control power circuit, signal processing circuit and output circuit;

The output circuit part annexation is: relay J ₄₃Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₃Pin two connect rectifier bridge DD ₇Pin 3, rectifier bridge DD ₇Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₇The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A1, rectifier bridge DD ₇The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _43A2, relay J ₄₂Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₂Pin two connect rectifier bridge DD ₈Pin 3, rectifier bridge DD ₈Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₈The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A1, rectifier bridge DD ₈The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _42A2, relay J ₄₁Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₄₁Pin two connect rectifier bridge DD ₉Pin 3, rectifier bridge DD ₉Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₉The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _41A1, rectifier bridge DD ₉The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _41A2, relay J ₈Pin one connect the AC signal input AC of intelligent controller _220VThe L terminal, relay J ₈Pin two connect rectifier bridge DD ₁₀Pin 3, rectifier bridge DD ₁₀Pin one connect the AC signal input AC of intelligent controller _220VThe N terminal, rectifier bridge DD ₁₀The 4 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A1, rectifier bridge DD ₁₀The 2 pin one-level that connects intelligent controller cut resistance signal output terminal K _8A2, relay J ₁Pin one connect the power input terminal B of intelligent controller, relay J ₁Pin two connect the contactless for hoisting signal output terminal K of intelligent controller _1A1, relay J ₂Pin one connect the power input terminal B of intelligent controller, relay J ₂Pin two connect the decline contactor signal output terminal K of intelligent controller _2A1, relay J ₄Pin one connect the power input terminal B of intelligent controller, relay J ₄Pin two connect the signal output terminal K of intelligent controller pre-excitation contactor _4A1, relay J ₈Pin one connect the power input terminal B of intelligent controller, relay J ₈Pin two connect the signal output terminal K of intelligent controller exciting current contactor _8A1, intelligent controller power input terminal A connects intelligent controller contactless for hoisting signal output terminal K _1A2, connect intelligent controller decline contactor signal output terminal K _2A2, connect intelligent controller pre-excitation contactor signal output terminal K _4A2, connect intelligent controller braking contactor signal output terminal K _7A2

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