Integrated electric control system applied to crane

Abstract

The utility model relates to an integrated electric control system applied to a crane. The integrated electric control system comprises an operation unit, a power driving unit, an integrated control unit, a communication unit, an alarm unit, a power supply protection unit, a grounding unit and a connecting unit, the power driving unit comprises a main power supply control loop, a rectifier bridge circuit, a filter circuit, a brake circuit, an inverter circuit and a crane running mechanism; the integrated control unit comprises a control module, an anti-shake module, a data acquisition module, a Bluetooth module, a man-machine interaction module and a black box module. The integrated electric control system applied to the crane, provided by the utility model, is high in intelligent degree, can monitor the running state of a running mechanism of the crane in real time, and can timely and automatically adjust a control strategy according to the running state of the running mechanism of the crane so as to optimize the running performance of the crane.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane technical field, concretely relates to a kind of integrated electric control system applied to crane. BACKGROUND

[0002] In modern engineering construction, logistics handling and many other fields, crane plays an indispensable role, and its electric control system, as the core control part of crane, directly determines the operating performance, safety and work efficiency of crane.

[0003] However, the traditional crane electric control system has the following problems: 1. Low degree of intelligence, limited monitoring and fault diagnosis functions for the operating state of the crane, unable to monitor the operating state of the crane in real time, often requiring regular manual inspection and maintenance, and unable to automatically adjust the control strategy in time to optimize the operating performance of the crane when facing complex and variable operating environments and conditions; 2. When controlling the operating mechanism of the crane, the heavy object may swing, which may cause safety accidents.

[0004] Therefore, the utility model provides an integrated electric control system applied to crane to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model aims to provide an integrated electric control system applied to crane, which can monitor the operating state of the crane operating mechanism in real time and automatically adjust the control strategy in time to optimize the operating performance of the crane according to the operating state of the crane operating mechanism.

[0006] The utility model provides an integrated electric control system applied to crane, which comprises:

[0007] An operation unit for issuing operation instructions;

[0008] A power drive unit comprising a main power control circuit connected to an externally input three-phase alternating voltage, a rectifier bridge circuit connected to the main power control circuit through wires for converting the three-phase alternating voltage into a direct current voltage, a filter circuit connected to the rectifier bridge circuit through wires for filtering the direct current voltage, a brake circuit connected to the filter circuit through wires, an inverter circuit connected to the brake circuit through wires for converting the direct current voltage waveform into an adjustable frequency alternating voltage waveform, and a crane operating mechanism connected to the inverter circuit through wires, wherein the brake circuit is used to make the crane operating mechanism stop running quickly.

[0009] An integrated control unit comprising a control module, an anti-swing module, a data acquisition module, a Bluetooth module, a human-computer interaction module and a black box module; the control module is connected with the operation unit and the inverter circuit simultaneously, the control module is used for receiving the operation instruction and controlling the crane running mechanism to execute corresponding operation action according to the operation instruction; the anti-swing module, the data acquisition module, the Bluetooth module, the human-computer interaction module and the black box module are all arranged on the control module; the anti-swing module is used for preventing the load from swinging when the crane running mechanism is hoisting; the data acquisition module is used for acquiring the state signal of the crane running mechanism in the running process; the Bluetooth module is used for connecting with the external mobile terminal, so that the maintenance personnel can check the real-time running condition of the crane running mechanism through the mobile terminal; the human-computer interaction module is used for displaying all state information of the crane running mechanism, and the human-computer interaction module stores professional output code instruction book, so as to facilitate the accurate code output operation of the maintenance personnel in operation; the black box module is used for real-time monitoring and recording the running state of the crane running mechanism;

[0010] A communication unit connected with the control module is used for enabling the crane running mechanism to remotely communicate with the external cloud platform, so as to realize remote monitoring and control of the crane running mechanism;

[0011] An alarm unit connected with the control module is used for emitting red light and / or high-decibel alarm when the crane running mechanism fails or runs;

[0012] A power protection unit connected with the main power control circuit is used for detecting the current of the main power control circuit, and disconnecting the main power control circuit immediately when short circuit or overrated current of the main power control circuit is detected;

[0013] A grounding unit connected with the operation unit, the control module, the anti-swing module, the data acquisition module, the Bluetooth module, the human-computer interaction module, the black box module, the communication unit, the alarm unit and the power protection unit through wires is used for preventing the occurrence of electric leakage;

[0014] A connection unit is used for controlling the connection and disconnection of wires.

[0015] Preferably, the main power control circuit comprises an upper power contactor connected with an external input three-phase alternating voltage and an air circuit breaker connected with the upper power contactor and the rectifier bridge circuit; the rectifier bridge circuit is composed of multiple diode elements; the filter circuit is composed of resistance elements and capacitor elements; the brake circuit is composed of resistance elements, diode elements and the brake pipe element; the inverter circuit comprises a hoisting inverter circuit, a trolley inverter circuit and a crab inverter circuit, and the hoisting inverter circuit, the trolley inverter circuit and the crab inverter circuit are each composed of six insulated gate bipolar transistor elements.

[0016] Preferably, the crane operating mechanism comprises a hoisting motor connected with the hoisting inverter circuit, a first trolley motor and a second trolley motor connected with the trolley inverter circuit, and a crab motor connected with the crab inverter circuit.

[0017] Preferably, the control module comprises a control board and a drive board; the control board is connected with the operating unit and the hoisting inverter circuit; the drive board is connected with the control board, the trolley inverter circuit and the crab inverter circuit; the control board is used for receiving the operation instruction issued by the operating unit and controlling the hoisting motor, the first trolley motor, the second trolley motor and the crab motor to perform corresponding operating actions according to the operation instruction; the anti-sway module, the data acquisition module, the Bluetooth module, the human-computer interaction module and the black box module are arranged on the control board.

[0018] Preferably, the operating unit is a hand switch or a wireless remote controller, and the operation instruction issued by the hand switch or the wireless remote controller can be any one or more of hoisting uplink, hoisting downlink, hoisting fast, trolley forward, trolley backward, trolley fast, crab left, crab right, crab fast, start, emergency stop, alarm bell, fault reset and start anti-sway, and the emergency stop operation instruction is higher than the hoisting uplink operation instruction, the hoisting downlink operation instruction, the hoisting fast operation instruction, the trolley forward operation instruction, the trolley backward operation instruction, the trolley fast operation instruction, the crab left operation instruction, the crab right operation instruction, the crab fast operation instruction, the start operation instruction, the alarm bell operation instruction, the fault reset operation instruction and the start anti-sway operation instruction.

[0019] Preferably, the electric control system further comprises an overload sensor, a brake module and a limit module connected with the control panel, the overload sensor is used for monitoring the weight of the load hoisted by the crane in real time; when the control panel receives the emergency stop operation instruction sent by the hand switch or the wireless remote controller, the brake module is used for sending a brake signal to stop the hoisting motor, the first trolley motor, the second trolley motor and the trolley motor; the limit module is used for preventing the hoisting motor, the first trolley motor, the second trolley motor and the trolley motor from over-movement.

[0020] Compared with the related art, the utility model provides an integrated electric control system applied to a crane, which comprises an operation unit, a power driving unit, an integrated control unit, a communication unit, an alarm unit, a power protection unit, a grounding unit and a connecting unit; the power driving unit comprises a main power control loop, a rectifier bridge circuit, a filter circuit, a braking circuit, an inverter circuit and a crane operating mechanism; the integrated control unit comprises a control module, an anti-swing module, a data acquisition module, a Bluetooth module, a man-machine interaction module and a black box module. In the above structure, the frequency and amplitude of the output alternating voltage can be adjusted through the setting of the power driving unit, so as to realize accurate control of the crane operating mechanism; the anti-swing module can prevent the load from swinging when the crane operating mechanism is performing hoisting operation, thereby reducing safety accidents caused by load swinging; the setting of the data acquisition module can acquire the state signal of the crane operating mechanism during operation; the setting of the Bluetooth module can be connected with an external mobile terminal, so that maintenance personnel can check the real-time operation of the crane operating mechanism through the mobile terminal; the setting of the man-machine interaction module can display all state information of the crane operating mechanism, and the man-machine interaction module stores a professional output code instruction manual, so as to facilitate accurate code output operation of maintenance personnel during operation; the setting of the black box module can monitor and record the operating state of the crane operating mechanism in real time; the setting of the communication unit can enable the crane operating mechanism to remotely communicate with an external cloud platform, so as to realize remote monitoring and control of the crane operating mechanism; the setting of the alarm unit can emit a red light and / or a high-decibel alarm to remind the operator and nearby workers to pay attention to the safety of the crane operating area when the crane operating mechanism fails or operates; the setting of the power protection unit can detect the current of the main power control loop, and when short circuit or overrated current of the main power control loop is detected, the main power control loop will be immediately disconnected to avoid bad components; the setting of the grounding unit can prevent leakage; the setting of the connecting unit is used for controlling the connection and disconnection of the wire, without the need for complex welding or winding operation, thereby reducing the risk of electrical failure caused by improper welding or winding. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic view of the integral electric control system applied to the crane;

[0022] Figure 2 A structure schematic view of the connection of the operation unit, the power driving unit and the integrated control unit in the utility model;

[0023] Figure 3 A structure schematic view of the connection of the control panel, the operation unit and the band brake module in the utility model;

[0024] Figure 4 A structure schematic view of the connection of the control panel, the limit module and the overload sensor in the utility model. DETAILED DESCRIPTION

[0025] The utility model provides a kind of integral electric control system applied to crane, to solve the intelligent degree of lower of existing crane electric control system, the monitoring and fault diagnosis function of crane operating state is more limited, cannot real-time monitoring the operating state of crane, often need artificial periodic inspection and maintenance, when facing complex and changeable operating environment and working condition, cannot timely automatically adjust control strategy to optimize the operating performance of crane problem.

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0027] Please refer to the drawings in the embodiments of the utility model Figures 1-4As shown, the utility model provides an integral type electric control system for crane, it includes: operation unit 1 for sending operation instruction, power drive unit 2: it includes the main power control circuit 21 connected with the three -phase alternating voltage of external input, rectifier bridge circuit 22 for converting the three -phase alternating voltage into direct current voltage with the main power control circuit 21 is connected through wire, filter circuit 23 for carrying out filter processing to the direct current voltage with rectifier bridge circuit 22 is connected through wire, brake circuit 24 connected through wire with the filter circuit 23, inverter circuit 25 for converting the direct current voltage waveform into adjustable frequency alternating voltage waveform with brake circuit 24 is connected through wire and crane operating mechanism 26 connected through wire with inverter circuit 25, brake circuit 24 is used for making crane operating mechanism 26 can stop running fast, integrated control unit 3 includes control module 31, anti -swing module 32, data acquisition module 33, bluetooth module 34, man -machine interaction module 35 and black box module 36, control module 31 is connected with operation unit 1 and inverter circuit 25 simultaneously, control module 31 is used for receiving operation instruction, and according to operation instruction control crane operating mechanism 26 executes corresponding operation action, anti -swing module 32, data acquisition module 33, bluetooth module 34, man -machine interaction module 35 and black box module 36 all set up on control module 31, anti -swing module 32 is used for preventing crane operating mechanism 26 when hoisting operation load swing situation occurs, data acquisition module 33 is used for gathering the state signal of crane operating mechanism 26 in the operation process, bluetooth module 34 is used for external mobile terminal connection, so that maintenance personnel can view the real -time operation of crane operating mechanism 26 through mobile terminal, man -machine interaction module 35 is used for showing all state information of crane operating mechanism 26, and man -machine interaction module 35 has professional output code instruction book, so that maintenance personnel carries out accurate code output operation when operating, black box module 36 is used for real -time monitoring, record the operating state of crane operating mechanism.A communication unit 4 connected with the control module 31 for remote communication between the crane operating mechanism 26 and an external cloud platform to realize remote monitoring and control of the crane operating mechanism 26; an alarm unit 5 connected with the control module 31 for emitting red light and / or high-decibel alarm when the crane operating mechanism 26 fails or operates; a power protection unit 6 connected with the main power control circuit 21 for detecting the current of the main power control circuit 21 and immediately disconnecting the main power control circuit 21 when a short circuit or overrated current of the main power control circuit 21 is detected; a grounding unit 7 connected with the operation unit 1, the control module 31, the anti-sway module 32, the data acquisition module 33, the Bluetooth module 34, the human-computer interaction module 35, the black box module 36, the communication unit 4, the alarm unit 5 and the power protection unit 6 through wires for preventing the occurrence of electric leakage; and a connection unit 8 for controlling the connection and disconnection of wires.

[0028] It should be noted that the control logic of the integrated electric control system applied to the crane is as follows: 1. After power-on, first perform self-checking on each unit to check whether the electrical elements of each unit are in a normal state, after self-checking is completed and self-checking is normal, the human-computer interaction interface unit will display a normal state indication code, at this time the next operation can be performed. 2. After receiving the control instruction issued by the operation unit 1, the power drive unit 2 will first interact with the matching safety protection device of the related components required to execute the operation instruction based on the operation instruction content, after confirming that the safety protection device is in a normal state and the signal is correct, the operation instruction is issued, and the corresponding crane operating mechanism 26 executes the operation instruction. 3. The stop operation instruction of the integrated electric control system applied to the crane is higher than all operation instructions, when any emergency occurs during the operation of the system, the stop instruction can be issued through the operation unit 1, the system does not need to perform any signal interaction, and immediately executes the stop instruction, and all mechanism components stop operating.

[0029] In the above structure, the frequency and amplitude of the output alternating voltage can be adjusted by the power driving unit 2 to achieve precise control of the crane operating mechanism 26; the anti-sway module 32 can prevent the load from swinging when the crane operating mechanism 26 is performing lifting operations, for example, it can significantly reduce the swinging of the hook and load caused by the movement of the crane or the inertial impact of the load during operation, which helps to maintain the stability of the load and reduce safety accidents caused by load swinging; the data acquisition module 33 can collect all external signals, including digital signals (such as switch status) and analog signals (such as weight, temperature, etc.), which reflect the real-time state of the crane operating mechanism 26 during operation and are the basis for data processing and control of the control module; the Bluetooth module 34 can be connected with external mobile terminals (such as mobile phone APP) to enable maintenance personnel to view the real-time operation of the crane operating mechanism through the mobile terminal, which completely solves the pain point of the maintenance personnel needing to carry a computer to the electrical control cabinet on the lifting maintenance platform and connecting with the PLC for maintenance, greatly facilitating the maintenance personnel; the human-computer interaction module 35 is a key input and code output interaction mode that can display all state information of the crane operating mechanism 26, and the human-computer interaction module 35 stores professional output code instructions to facilitate accurate code output operations by maintenance personnel during operation, but to minimize the impact of human factors on the system, human-computer interaction operations need to be performed by professional maintenance personnel. The black box module 36 can monitor and record the operating state of the crane operating mechanism 26 in real time, and can also provide operation records, fault review, and troubleshooting solutions for customers with no or poor network; the communication unit 4 can enable the crane operating mechanism 26 to communicate with external cloud platforms through the network to achieve remote monitoring and control of the crane operating mechanism 26, and the communication unit 4 is very convenient for remote operation and fault troubleshooting, improving work efficiency and flexibility.And the communication unit 4 is connected with the control panel 311, realizes the real-time collection of data, these data have important significance for the state monitoring, fault early warning and performance optimization of the system, not only realizes the transmission of data and remote control, but also can provide network connection and data storage function, access the crane running mechanism 26 to the Internet of Things, realize the integration and data sharing with other systems; Through the setting of the alarm unit 5, when the crane running mechanism 26 fails or runs, red light and / or high decibel alarm reminds the operator and nearby staff to pay attention to the safety of crane running area; Through the setting of the power protection unit 6, the current of the main power control circuit 21 can be detected, when the main power control circuit 21 is detected to have short circuit or exceed rated current, the main power control circuit 21 will be disconnected immediately, to avoid bad components; Through the setting of the grounding unit 7, potential leakage current can be introduced into the ground in time, to avoid equipment damage caused by leakage and electrical failure, and the electrical components of each unit can be effectively protected in normal operation and fault state, reducing the risk of electrical fire, when a unit leaks, the grounding unit 7 can quickly introduce the leakage current into the ground, effectively preventing the operator from being electrocuted by touching the leakage equipment, and effectively dissipating static electricity generated in the unit, reducing the influence of static electricity on electrical equipment. In addition, the grounding unit 7 has a low grounding resistance, which helps to quickly discharge current when electrical components fail, reducing the risk of equipment damage. Through the setting of the connection unit 8, it is used to control the connection and disconnection of the wire, without complex welding or winding operation, reducing the risk of electrical failure caused by improper welding or winding. In addition, the above-mentioned units constitute an integrated electric control system, which has high intelligence and can monitor the running state of the crane running mechanism in real time, and can automatically adjust the control strategy in time according to the running state of the crane running mechanism to optimize the running performance of the crane.

[0030] In the embodiment, the operation unit 1 is a hand flashlight or a wireless remote controller, the operation instruction sent by the hand flashlight or the wireless remote controller can be any one or more of hoisting up, hoisting down, hoisting fast, trolley forward, trolley backward, trolley fast, car left, car right, car fast, start, emergency stop, alarm, fault reset and start anti-shake, and the emergency stop operation instruction is higher than the hoisting up operation instruction, the hoisting down operation instruction, the hoisting fast operation instruction, the trolley forward operation instruction, the trolley backward operation instruction, the trolley fast operation instruction, the car left operation instruction, the car right operation instruction, the car fast operation instruction, the start operation instruction, the alarm operation instruction, the fault reset operation instruction and the start anti-shake operation instruction.

[0031] Specifically, the main power control circuit 21 includes an upper contactor 211 connected with an external input three-phase alternating voltage and an air circuit breaker 212 connected with the upper contactor 211 and the rectifier bridge circuit 22; the rectifier bridge circuit 22 is composed of a plurality of diode elements; the filter circuit 23 is composed of a resistance element and a capacitor element; the braking circuit 24 is composed of a resistance element, a diode element and the brake pipe element; the inverter circuit 25 includes a lifting inverter circuit 251, a trolley inverter circuit 252 and a crab inverter circuit 253, and the lifting inverter circuit 251, the trolley inverter circuit 252 and the crab inverter circuit 253 are each composed of six insulated gate bipolar transistor elements; the crane operating mechanism 26 includes a lifting motor 261 connected with the lifting inverter circuit 251, first and second trolley motors 262 and 263 connected with the trolley inverter circuit 252, and a crab motor 264 connected with the crab inverter circuit 253.

[0032] It is worth mentioning that the direct current voltage waveform obtained after rectification by the rectifier bridge circuit 22 usually contains a large number of harmonic components, and the rectified direct current voltage is filtered by the filter circuit 23, so that the filtered direct current voltage waveform is more stable and smooth, which is conducive to improving the efficiency and stability of the inverter process; the inverter circuit 25 is composed of power electronic devices such as insulated gate bipolar transistors (IGBT) and diodes, and the insulated gate bipolar transistors (IGBT) convert the filtered direct current voltage waveform into an adjustable frequency alternating voltage waveform. By controlling the switching sequence of IGBT, the frequency and amplitude of the output alternating voltage waveform can be accurately controlled, and by adjusting the frequency and amplitude of the output alternating voltage, the crane operating mechanism 26 can be accurately controlled; the braking circuit 24 has the following functions: 1. Consuming feedback braking current: when the output frequency of the inverter circuit 25 drops too fast, the crane operating mechanism 26 will generate a feedback braking current, causing the direct current voltage to rise, which may cause system damage, and the braking circuit 24 can consume this part of the feedback braking current, thereby avoiding system damage. 2. Stabilizing grid voltage: the braking circuit 24 converts the feedback energy into heat energy and consumes it, avoiding voltage fluctuations caused by regenerative energy feedback to the grid, which helps to maintain the smooth operation of the power network. 3. Improving braking capacity: the braking circuit 24 can significantly improve the braking capacity of the system, ensuring that the crane operating mechanism 26 can be quickly stopped within the set time.

[0033] Further, the control module 31 comprises a control board 311 and a drive board 312; the control board 311 is connected with the operation unit 1 and the lifting inverter circuit 251 simultaneously; the drive board 312 is connected with the control board 311, the cart inverter circuit 252 and the trolley inverter circuit 253 simultaneously; the control board 311 is used for receiving the operation instruction sent by the operation unit 1, and controlling the lifting motor 261, the first cart motor 262, the second cart motor 263 and the trolley motor 264 to execute corresponding operation actions according to the operation instruction; the anti-swing module 32, the data acquisition module 33, the Bluetooth module 34, the human-computer interaction module 35 and the black box module 36 are all arranged on the control board 311.

[0034] In the embodiment, the electric control system further comprises an overload sensor 9, a brake module 10 and a limit module 11 connected with the control board 311; the overload sensor 9 is used for monitoring the weight of the load lifted by the crane in real time; when the control board 311 receives the emergency stop operation instruction sent by the hand switch or the wireless remote controller, the brake module 10 is used for sending a brake signal to stop the lifting motor 261, the first cart motor 262, the second cart motor 263 and the trolley motor 264; the limit module 11 is used for preventing the lifting motor 261, the first cart motor 262, the second cart motor 263 and the trolley motor 264 from over-movement.

[0035] In addition, an encoder is arranged on the control board 311, which converts the movement parameters of the crane running mechanism 26 into digital signals that can be processed by the control board 311 according to its own encoding principle (such as recording the number of pulses by the incremental encoder, outputting binary code by the absolute value encoder, etc.), thereby providing highly accurate data support for the precise control of the crane.

[0036] Compared with the related art, the utility model provides an integral type electric control system for crane, it includes operation unit, power drive unit, integrated control unit, communication unit, alarm unit, power protection unit, grounding unit and connecting unit, power drive unit includes main power control circuit, rectifier bridge circuit, filter circuit, brake circuit, inverter circuit and crane operating mechanism, integrated control unit includes control module, anti - swing module, data acquisition module, bluetooth module, man - machine interface module and black box module, through the setting of power drive unit, can adjust the frequency and amplitude of output alternating voltage, realize accurate control to crane operating mechanism, through anti - swing module can prevent the crane operating mechanism when hoisting operation load swing situation, thereby reduce the safety accident caused by load swing, through the setting of data acquisition module, can gather the state signal of crane operating mechanism in the running process, through the setting of bluetooth module, can connect with external mobile terminal, so that the maintenance personnel can check the real - time operation condition of crane operating mechanism through mobile terminal, through the setting of man - machine interface module, can display all state information of crane operating mechanism, and man - machine interface module has professional output code instruction book, so that the accurate code output operation of maintenance personnel in operation, through the setting of black box module, can real - time monitoring, record the running state of crane operating mechanism, through the setting of communication unit, can make crane operating mechanism and external cloud platform remote communication, realize remote monitoring and control to crane operating mechanism, through the setting of alarm unit, when crane operating mechanism appears failure or operation, send red light and / or high decibel alarm to remind operating personnel and nearby staff to pay attention to crane operation area safety, through the setting of power protection unit, can detect the current of main power control circuit, when detecting that main power control circuit has short - circuit or exceeds rated current, will immediately disconnect main power control circuit, avoid bad component, through the setting of grounding unit, can prevent the leakage situation, through the setting of connecting unit, it is used for controlling the connection and disconnection of wire, need not to carry out complex welding or winding operation, reduced the electrical failure risk caused by improper welding or winding.

[0037] It should be noted that the above-mentioned embodiments should be understood as illustrative, rather than limiting the protection scope of the utility model, the protection scope of the utility model is subject to the claims. For those skilled in the art, some non-essential improvements and adjustments made to the utility model without departing from the essence and scope of the utility model still belong to the protection scope of the utility model.

Claims

1. An integrated electronic control system for a crane, characterized in that, The electric control system comprises: an operation unit for issuing operation instructions; a power drive unit comprising a main power control circuit connected with an externally input three-phase alternating voltage, a rectifier bridge circuit connected with the main power control circuit through wires for converting the three-phase alternating voltage into a direct current voltage, a filter circuit connected with the rectifier bridge circuit through wires for filtering the direct current voltage, a braking circuit connected with the filter circuit through wires, an inverter circuit connected with the braking circuit through wires for converting the direct current voltage waveform into an alternating voltage waveform with adjustable frequency, and a crane operating mechanism connected with the inverter circuit through wires, the braking circuit being used for enabling the crane operating mechanism to stop running quickly; an integrated control unit comprising a control module, an anti-swing module, a data acquisition module, a Bluetooth module, a human-computer interaction module and a black box module; the control module is connected with the operation unit and the inverter circuit simultaneously, the control module being used for receiving the operation instructions and controlling the crane operating mechanism to perform corresponding running actions according to the operation instructions; the anti-swing module, the data acquisition module, the Bluetooth module, the human-computer interaction module and the black box module are all arranged on the control module; the anti-swing module is used for preventing the load from swinging when the crane operating mechanism is performing hoisting operations; the data acquisition module is used for acquiring state signals of the crane operating mechanism in the running process; the Bluetooth module is used for external mobile terminal connection, so that maintenance personnel can check the real-time running condition of the crane operating mechanism through the mobile terminal; the human-computer interaction module is used for displaying all state information of the crane operating mechanism, and the human-computer interaction module stores a professional output code instruction manual, so as to facilitate accurate code output operation of maintenance personnel in operation; the black box module is used for real-time monitoring and recording the running state of the crane operating mechanism; a communication unit connected with the control module for enabling the crane operating mechanism to perform remote communication with an external cloud platform, so as to realize remote monitoring and control of the crane operating mechanism; an alarm unit connected with the control module for emitting red light and / or high-decibel alarm when the crane operating mechanism appears to be faulty or running; a power protection unit connected with the main power control circuit for detecting the current of the main power control circuit, and immediately disconnecting the main power control circuit when detecting that the main power control circuit is short-circuited or exceeds the rated current; a grounding unit connected with the operation unit, the control module, the anti-swing module, the data acquisition module, the Bluetooth module, the human-computer interaction module, the black box module, the communication unit, the alarm unit and the power protection unit through wires, for preventing leakage; a connection unit for controlling the connection and disconnection of wires.

2. An integrated electric control system for a crane according to claim 1, characterized in that, The main power control circuit comprises an upper power contactor connected with an external input three-phase alternating voltage and an air circuit breaker connected with the upper power contactor and the rectifier bridge circuit; the rectifier bridge circuit is composed of multiple diode elements; the filter circuit is composed of resistance elements and capacitor elements; the brake circuit is composed of resistance elements, diode elements and brake tube elements; the inverter circuit comprises a hoisting inverter circuit, a trolley inverter circuit and a crab inverter circuit, and the hoisting inverter circuit, the trolley inverter circuit and the crab inverter circuit are each composed of six insulated gate bipolar transistor elements.

3. An integrated electric control system for a crane according to claim 2, characterized in that, The crane operating mechanism comprises a hoisting motor connected with the hoisting inverter circuit, a first trolley motor and a second trolley motor connected with the trolley inverter circuit, and a crab motor connected with the crab inverter circuit.

4. An integrated electric control system for a crane according to claim 3, characterized in that, The control module comprises a control board and a drive board; the control board is connected with the operating unit and the hoisting inverter circuit; the drive board is connected with the control board, the trolley inverter circuit and the crab inverter circuit; the control board is used for receiving the operation instruction issued by the operating unit and controlling the hoisting motor, the first trolley motor, the second trolley motor and the crab motor to perform corresponding operation actions according to the operation instruction; the anti-sway module, the data acquisition module, the Bluetooth module, the man-machine interaction module and the black box module are arranged on the control board.

5. An integrated electronic control system for a crane according to claim 4, characterized in that, The operating unit is a hand switch or a wireless remote controller, and the operation instruction issued by the hand switch or the wireless remote controller can be any one or more of hoisting uplink, hoisting downlink, hoisting fast, trolley forward, trolley backward, trolley fast, crab left, crab right, crab fast, start, emergency stop, alarm, fault reset and start anti-sway, and the emergency stop operation instruction is higher than the hoisting uplink operation instruction, the hoisting downlink operation instruction, the hoisting fast operation instruction, the trolley forward operation instruction, the trolley backward operation instruction, the trolley fast operation instruction, the crab left operation instruction, the crab right operation instruction, the crab fast operation instruction, the start operation instruction, the alarm operation instruction, the fault reset operation instruction and the start anti-sway operation instruction.

6. An integrated electronic control system for a crane according to claim 5, characterized in that, The electric control system further comprises an overload sensor, a brake holding module and a limit module connected with the control board; the overload sensor is used for monitoring the weight of the crane hoisting load in real time; when the control board receives the emergency stop operation instruction issued by the hand switch or the wireless remote controller, the brake holding module is used for issuing a brake holding signal to stop the hoisting motor, the first trolley motor, the second trolley motor and the crab motor; the limit module is used for preventing the hoisting motor, the first trolley motor, the second trolley motor and the crab motor from excessive movement.

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