A crane electronic control system

Abstract

This invention relates to the field of crane control technology, and more particularly to a crane electrical control system, comprising: an operation module for receiving control commands from a user and sending the control commands to a control module; a control module for receiving the control commands, parsing the commands to obtain the operating modules to be controlled and the corresponding control operations, encoding the corresponding control operations to obtain corresponding digital signals, and sending the operating modules and digital signals to a connection module; and a connection module for connecting all operating modules and converting the digital signals into corresponding currents to control the operating modules. By directly receiving user control commands through the operation module, this system allows for intuitive operation by the user, reducing the difficulty of use. Users do not need to directly understand the working details of the underlying operating modules; they only need to send control commands through the operation module, greatly simplifying the operation process and enabling remote control of the crane.

Description

Technical Field

[0001] This invention relates to the field of crane control technology, and in particular to a crane electrical control system. Background Technology

[0002] Existing crane control systems generally consist of displays, controllers, and distribution boxes. The controllers are usually located in the electrical control box and are connected to various operating modules in the crane (such as throttle pedals, three-color alarm lights, work lights, and solenoid valves) via wiring harnesses. However, because electrical components are distributed in different locations on the crane, the wiring harnesses required are numerous and complex, resulting in a complex and costly system that is difficult for technicians to operate. Summary of the Invention

[0003] To address the aforementioned shortcomings, the present invention aims to provide a crane electrical control system to reduce the complexity of crane control systems.

[0004] To achieve this objective, the present invention adopts the following technical solution: a crane electrical control system, comprising:

[0005] The operation module is used to accept control commands from the user and send the control commands to the control module.

[0006] The control module is used to receive the control command, parse the control command to obtain the operating module to be controlled and the corresponding control operation, encode the corresponding control operation to obtain the corresponding digital signal, and send the operating module and digital signal to the connection module.

[0007] The connection module is used to connect all operating modules and convert digital signals into corresponding currents to control the operating modules;

[0008] It also includes a power drive module, which is electrically connected to the connection module and the control module respectively;

[0009] The power drive module includes a first drive module, a second drive module, and a third drive module;

[0010] The first drive module is used to convert the input AC power into DC power using a rectifier bridge;

[0011] The second drive module is used to filter the rectified DC voltage;

[0012] The third drive module is used to convert the filtered DC voltage waveform into an AC voltage waveform with an adjustable frequency and control the switching timing of the IGBT, thereby enabling control over the frequency and amplitude of the output AC voltage waveform.

[0013] Preferably, it also includes a braking module, which is electrically connected to the power drive module;

[0014] The braking module is used to introduce the feedback current into the braking resistor after receiving the braking current signal.

[0015] Preferably, it includes an alarm module; the alarm module is electrically connected to the control module;

[0016] The alarm module is used to receive fault signals and start signals, and to issue an alarm when it receives fault signals and start signals.

[0017] Preferably, it also includes a human-computer interaction module; the human-computer interaction module is electrically connected to the control module;

[0018] The human-machine interaction module acquires the digital signals or fault signals executed by the crane and displays them on the display.

[0019] Preferably, it also includes an anti-sway module, which is electrically connected to the control module;

[0020] The anti-sway module is used to reduce the swaying of the hook and load caused by crane operation or load inertial impact.

[0021] Preferably, it also includes a black box module, which is electrically connected to the control module;

[0022] The black box module is used to monitor and record the crane's operating status in real time.

[0023] Preferably, it also includes a Bluetooth module, which is electrically connected to the control module;

[0024] The Bluetooth module is used to connect to the user's input terminal and to feed back the crane's operating status to the user's input terminal.

[0025] Preferably, it also includes a data acquisition module, which is electrically connected to the control module;

[0026] The data acquisition module is used to collect digital and analog signals fed back by the operating module.

[0027] One of the above technical solutions has the following advantages or beneficial effects: The system's operation module directly accepts user control commands, enabling intuitive operation and reducing the difficulty of use. Users do not need to directly understand the working details of the underlying operating module; they only need to send control commands through the operation module, greatly simplifying the operation process and realizing remote control of the crane. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an embodiment of the present invention. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figure 1 As shown, a crane electrical control system includes:

[0033] The operation module is used to accept control commands from the user and send the control commands to the control module.

[0034] The control module is used to receive the control command, parse the control command to obtain the operating module to be controlled and the corresponding control operation, encode the corresponding control operation to obtain the corresponding digital signal, and send the operating module and digital signal to the connection module.

[0035] The connection module is used to connect all operating modules and convert digital signals into corresponding currents to control the operating modules;

[0036] In this invention, the operation module can receive user control commands for the crane. For example, the user can manually input control commands such as start and move through the operation module. The operation module then sends the control commands to the control module, which stores the codes corresponding to various control commands. After receiving the control commands, the control module parses them, matches them with the corresponding codes, and obtains digital signals. Therefore, the control module can support a variety of different control operations, improving the system's flexibility. The digital signals can be transmitted via baseband to the connection module. The connection module acts as a central management module, responsible for connecting all operating modules and ensuring accurate transmission of digital signals, further enhancing the system's reliability. The operating modules specifically consist of external components of the crane, such as motors, brakes, and fans. Upon receiving the corresponding current, they execute corresponding actions to enable the crane to operate.

[0037] This system's operation module directly accepts user control commands, enabling intuitive operation and reducing the difficulty of use. Users do not need to understand the working details of the underlying operating modules; they only need to send control commands through the operation module, greatly simplifying the operation process and enabling remote control of the crane.

[0038] It also includes a power drive module, which is electrically connected to the connection module and the control module respectively;

[0039] The power drive module includes a first drive module, a second drive module, and a third drive module;

[0040] The first drive module is used to convert the input AC power into DC power using a rectifier bridge;

[0041] The second drive module is used to filter the rectified DC voltage;

[0042] The third drive module is used to convert the filtered DC voltage waveform into an AC voltage waveform with an adjustable frequency and control the switching timing of the IGBT, thereby enabling control over the frequency and amplitude of the output AC voltage waveform.

[0043] To better and faster control the operating module, enabling the transmitted digital signal to be immediately converted into the corresponding current and allowing the connection module to directly control the operating module, this invention also includes a power drive module. First, the power drive module converts the received AC power into DC power. Since the rectified DC voltage waveform typically contains numerous harmonic components, and some operating modules use electromagnetic relays, these harmonics can often cause malfunctions or failures in relay protection and automatic devices, easily leading to or exacerbating operating module failures. Therefore, a second drive module is provided to filter the rectified DC voltage to eliminate harmonics. Subsequently, a third drive module, through precise control of the IGBT switching sequence, makes the output AC voltage waveform closer to a sine wave, further reducing harmonic content, thereby improving power quality and protecting the operating module. Furthermore, by adjusting the frequency and amplitude of the output AC voltage, precise control of the operating module's motor speed and load can be achieved.

[0044] Preferably, it also includes a braking module, which is electrically connected to the power drive module;

[0045] The braking module is used to introduce the feedback current into the braking resistor after receiving the braking current signal.

[0046] The braking module is electrically connected to the power drive module. When a braking digital signal is transmitted to the power drive module, the drive module controls the corresponding current to brake the crane's operating module. During braking, the power corresponding to the operating module is rapidly reduced, generating a braking feedback current. This causes a rise in DC voltage, which can severely damage the motor of the operating module. Therefore, this invention also includes a braking module. When the braking module receives a braking current signal from the power drive module, it introduces the braking feedback current into a braking resistor. The braking resistor converts electrical energy into heat energy for dissipation, preventing voltage fluctuations caused by regenerated energy feeding back into the power grid and helping to maintain stable power network operation. Simultaneously, it allows the operating module to utilize maximum braking capacity promptly without considering the braking feedback current issue, ensuring the crane stops quickly within a set time.

[0047] Preferably, it includes an alarm module; the alarm module is electrically connected to the control module;

[0048] The alarm module is used to receive fault signals and start signals, and to issue an alarm when it receives fault signals and start signals.

[0049] When this control module detects a fault or the crane starts operating, it will emit a bright red light and a high-decibel alarm sound. This alerts operators and nearby personnel to the safety of the crane's operating area, thereby improving crane operation safety.

[0050] Preferably, it also includes a human-computer interaction module; the human-computer interaction module is electrically connected to the control module;

[0051] The human-machine interaction module acquires the digital signals or fault signals executed by the crane and displays them on the display.

[0052] The human-machine interface (HMI) module is located on the integrated control board and uses a button input and code output interaction mode. As the crane is a special type of equipment, to minimize the impact of human error on the system, the operation of the HMI module must be performed by qualified maintenance personnel. The HMI module is equipped with a professional output code manual, and all statuses can be displayed on the module.

[0053] Preferably, it also includes an anti-sway module, which is electrically connected to the control module;

[0054] The anti-sway module is used to reduce the swaying of the hook and load caused by crane operation or load inertial impact.

[0055] The anti-sway module, located on the integrated control board, handles the swaying of the load during crane operation after lifting. This module significantly reduces the swaying of the hook and load caused by the movement of the trolley and crane or the inertial impact of the load during operation. This helps maintain load stability and reduces potential safety accidents caused by swaying. The anti-sway module is an existing functional module; for details, please refer to patent publication number CN104609304.

[0056] Preferably, it also includes a black box module, which is electrically connected to the control module;

[0057] The black box module is used to monitor and record the crane's operating status in real time.

[0058] The black box module, located on the integrated control board, can monitor and record the crane's operating status in real time. It provides operating records, fault diagnosis, and troubleshooting solutions for customers without or with poor network connectivity on-site.

[0059] Preferably, it also includes a Bluetooth module, which is electrically connected to the control module;

[0060] The Bluetooth module is used to connect to the user's input terminal and to feed back the crane's operating status to the user's input terminal.

[0061] The Bluetooth module is located on the expansion interface of the integrated control board and can connect to the user's input terminal (mobile app). Maintenance personnel can view the real-time operation status of the crane in this system via the mobile app. This Bluetooth module completely solves the previous pain point where maintenance personnel had to carry a computer while riding a lifting maintenance platform to the electrical control cabinet and connect it to the PLC for maintenance, greatly simplifying the process for maintenance personnel.

[0062] Preferably, it also includes a data acquisition module, which is electrically connected to the control module;

[0063] The data acquisition module is used to collect digital and analog signals fed back by the operating module.

[0064] The module is located on the integrated control board. Through built-in input modules or external sensors, it can acquire all external signals, including digital signals (such as switch status) and analog signals (such as weight and temperature). These signals reflect the real-time status of the crane during operation and form the basis for the data processing and control of the "control module".

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A crane electrical control system, characterized in that, include: The operation module is used to accept control commands from the user and send the control commands to the control module. The control module is used to receive the control command, parse the control command to obtain the operating module to be controlled and the corresponding control operation, encode the corresponding control operation to obtain the corresponding digital signal, and send the operating module and digital signal to the connection module. The connection module is used to connect all operating modules and convert digital signals into corresponding currents to control the operating modules; It also includes a power drive module, which is electrically connected to the connection module and the control module respectively; The power drive module includes a first drive module, a second drive module, and a third drive module; The first drive module is used to convert the input AC power into DC power using a rectifier bridge; The second drive module is used to filter the rectified DC voltage; The third drive module is used to convert the filtered DC voltage waveform into an AC voltage waveform with an adjustable frequency and control the switching timing of the IGBT, thereby enabling control over the frequency and amplitude of the output AC voltage waveform.

2. The crane electrical control system according to claim 1, characterized in that, It also includes a braking module, which is electrically connected to the power drive module; The braking module is used to introduce the feedback current into the braking resistor after receiving the braking current signal.

3. A crane electrical control system according to claim 1, characterized in that, Includes an alarm module; the alarm module is electrically connected to the control module; The alarm module is used to receive fault signals and start signals, and to issue an alarm when it receives fault signals and start signals.

4. A crane electrical control system according to claim 1, characterized in that, It also includes a human-computer interaction module; the human-computer interaction module is electrically connected to the control module; The human-machine interaction module acquires the digital signals or fault signals executed by the crane and displays them on the display.

5. A crane electrical control system according to claim 1, characterized in that, It also includes an anti-sway module, which is electrically connected to the control module; The anti-sway module is used to reduce the swaying of the hook and load caused by crane operation or load inertial impact.

6. A crane electrical control system according to claim 1, characterized in that, It also includes a black box module, which is electrically connected to the control module; The black box module is used to monitor and record the crane's operating status in real time.

7. A crane electrical control system according to claim 1, characterized in that, It also includes a Bluetooth module, which is electrically connected to the control module; The Bluetooth module is used to connect to the user's input terminal and to feed back the crane's operating status to the user's input terminal.

8. A crane electrical control system according to claim 1, characterized in that, It also includes a data acquisition module, which is electrically connected to the control module; The data acquisition module is used to collect digital and analog signals fed back by the operating module.

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