Protection device of alternating-current and direct-current welding machine

By introducing monitoring devices and processor modules into AC/DC welding machines, the problems of traditional electricity meters lacking leakage current and illegal load current warnings have been solved, enabling real-time monitoring and rapid fault response, thus improving electricity safety and maintenance efficiency.

CN224238607UActive Publication Date: 2026-05-15SHANGHAI ZONGRONG ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI ZONGRONG ELECTRIC CO LTD
Filing Date
2025-05-12
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Traditional smart meters lack early warning functions for leakage current and illegal load current, and cannot effectively eliminate potential safety hazards in load electricity use.

Method used

A protection device for AC/DC welding machines was designed, comprising a monitoring device, a processor module, and an alarm. The monitoring component monitors the current in real time and issues an early warning when a fault is detected. It can also transmit fault data to a cloud platform for timely handling by staff.

Benefits of technology

It enables real-time early warning of leakage current and illegal load current, improving electrical safety, reducing equipment troubleshooting time, and increasing maintenance efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a protection device of an alternating current and direct current welding machine. The protection device comprises a protection box body, a wiring end, a control button, an output end, a display screen, a wiring port and a monitoring device, according to the utility model, the monitoring device is arranged, real-time monitoring work is completed on the condition of current flowing in the protection box body through the monitoring assembly, and execution data is transmitted to the interior of the processor module through the monitoring assembly, so that the processor module can control the alarm to give an early warning, thereby reminding a worker to inspect equipment. The operation state of the protection box body is monitored in real time through the monitoring device, so that a worker can check equipment fault points through the mobile terminal, and the fault maintenance efficiency of the worker is improved; therefore, the problem that the intelligent electric energy meter in the traditional technical scheme of the original equipment cannot perform early warning on the leakage current and the illegal load current and cannot eliminate the potential safety hazard of load power utilization is solved.
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Description

Technical Field

[0001] This utility model relates to the field of electrical equipment, and in particular to a protective device for AC / DC welding machines. Background Technology

[0002] Three-phase rail-mounted energy meters are a new generation of miniature smart energy meters. They have advantages such as high measurement accuracy, strong overload capacity, stable and reliable performance, wide operating voltage range, and low power consumption. They are installed via rails, and users only need to clip the energy meter onto the rails when in use, which is very convenient and quick. They can be widely used in buildings, shopping malls, exhibition centers, schools, airports, and factories.

[0003] Chinese patent CN219456287U discloses a three-phase rail-mounted energy meter. The device achieves a rigid connection between the display board and the power board inside the energy meter through a connector assembly, thereby keeping the two in a fixed vertical position within the housing. Since both the display circuit and the metering circuit are integrated on the display board, the metering board is eliminated, thus optimizing the product structure layout.

[0004] Taking the above-mentioned utility model as an example, when the leakage current of the load of the device reaches the set threshold or the line current exceeds the set threshold, the power outage protection is executed; however, the leakage current and illegal load current below the set threshold lack early warning function and cannot truly eliminate the potential electrical safety hazards of the user's load. Therefore, the smart energy meter in the traditional technical solution has the problem that it cannot provide early warning for leakage current and illegal load current and thus cannot eliminate potential electrical safety hazards of the load. Utility Model Content

[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a protection device for AC / DC welding machines.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a protection device for an AC / DC welding machine, comprising a protection box, terminals, control buttons, output terminals, a display screen, wiring ports, and a monitoring device. The top of the protection box is provided with terminals, and the bottom of the terminals is provided with output terminals. Wiring ports are provided on the outer sides of both the terminals and the output terminals. The display screen is installed at the front end of the protection box, and the control buttons are mounted on the right end of the display screen. The right end of the monitoring device is provided with the protection box.

[0007] Preferably, the monitoring component includes a mounting housing, a sensor, a junction box, an integrated wiring harness, a detection wiring harness, and a protective housing. The mounting housing houses the sensor, the junction box is installed inside the sensor, the integrated wiring harness is connected to the bottom of the mounting housing and to the outside of the processor module, the detection wiring harness is connected to the top of the mounting housing, the protective housing is installed outside the detection wiring harness, and the detection wiring harness is connected to the top of the protective housing.

[0008] In a further preferred embodiment, the transmitter, processor module, and transmitter are vertically arranged at the rear end of the alarm, so that the alarm can judge the telecommunication data through the processor module and thus enable the alarm to issue an alarm in real time.

[0009] In a further preferred embodiment, the wiring boards are arranged parallel to each other inside the mounting housing, and both sets of the wiring boards are connected to the outside of the sensor.

[0010] In a further preferred embodiment, the rear end of the mounting block frame is provided with a heat dissipation window, which is composed of multiple sets of heat dissipation holes, to ensure that the equipment can dissipate heat through this structure, thereby avoiding overload of the internal components of the equipment.

[0011] In a further preferred embodiment, the detection harness is provided in multiple sets, and each set of the detection harness is connected to the top of the protective box.

[0012] In a further preferred embodiment, the interior of the protective housing is a hollow structure, which facilitates the assembly of multiple integrated wire harnesses inside the protective housing, enabling the protective housing to protect the integrated wire harnesses.

[0013] In a further preferred embodiment, the transmitter, processor module, and transceiver can be data transmission equipment that can employ an industrial UTS system.

[0014] The beneficial effects of this utility model are:

[0015] This invention incorporates a monitoring device that monitors the current flowing within the protection box in real time. The monitoring device transmits the execution data to a processor module, enabling the processor to control an alarm to issue a warning, thus alerting staff to inspect the equipment. Furthermore, it transmits fault data back to a cloud platform via a transmitter, allowing staff to easily view the fault location. This allows for real-time monitoring of the protection box's operating status, enabling staff to view equipment faults via mobile devices, thereby accelerating repair efficiency. This also addresses the problem in traditional solutions where smart meters cannot warn of leakage current and illegal load current, thus failing to eliminate potential electrical safety hazards.

[0016] This invention incorporates a monitoring component that distributes detection harnesses within the protection box, connecting them in parallel. Current from each port is transmitted to a terminal block, which then transmits the measured current back to the sensor. When the sensor detects a fault current, it sends an early warning signal to the processor module. This allows the monitoring component to monitor the current flowing within the protection box in real time. The monitoring component then transmits the execution data to the processor module, enabling the processor to control an alarm to issue a warning, thus alerting staff to inspect the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the monitoring component of this utility model;

[0020] Figure 4 This is a side view of the monitoring component of this utility model;

[0021] Figure 5 This is a schematic diagram of the monitoring component structure of this utility model.

[0022] The components include: protective housing-1, wiring terminal-2, control button-3, output terminal-4, display screen-5, wiring port-6, monitoring device-7, mounting block frame-71, alarm-72, transmitter-73, processor module-74, transmitter-75, monitoring component-76, power supply box-77, mounting shell-761, sensor-762, junction box-763, integrated wiring harness-764, detection wiring harness-765, and protective housing-766. Detailed Implementation

[0023] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0024] Please see Figure 1 and Figure 2 This utility model provides a protection device for an AC / DC welding machine, including a protection box 1, a terminal block 2, a control button 3, an output terminal 4, a display screen 5, a wiring port 6, and a monitoring device 7. The terminal block 2 is provided on the top of the protection box 1, and the output terminal 4 is installed at the bottom of the terminal block 2. The wiring port 6 is provided on the outside of both the terminal block 2 and the output terminal 4. The display screen 5 is installed at the front end of the protection box 1, the control button 3 is assembled on the right end of the display screen 5, and the right end of the monitoring device 7 is provided with the protection box 1.

[0025] Please see Figure 3 and Figure 4 This utility model provides a protection device for an AC / DC welding machine. The monitoring device 7 includes a mounting block frame 71, an alarm 72, a transmitter 73, a processor module 74, a transmitter 75, a monitoring component 76, and a power supply box 77. The mounting block frame 71 is fixed to the right end of the protection box 1. The alarm 72 is installed inside the mounting block frame 71. The processor module 74 is installed at the rear end of the alarm 72. The transmitter 73 is located below the processor module 74. The transmitter 75 is connected to the bottom of the mounting block frame 71 via a wire. The monitoring component 76 is connected to the top of the protection box 1. The power supply box 77 is installed at the rear end of the alarm 72. The transmitter 73, processor module 74, and transmitter 75 can utilize data transmission equipment that can employ an industrial UTS system.

[0026] In this embodiment, the transmitter 73, processor module 74, and transmitter 75 are vertically arranged at the rear end of the alarm 72, so that the alarm 72 can judge the telecommunication data through the processor module 74 and thus issue an alarm in real time. The wiring board 763 is arranged parallel to the inside of the mounting housing 761, and both sets of wiring boards 763 are connected to the outside of the sensor 762. The rear end of the mounting block frame 71 is provided with a heat dissipation window, which is composed of multiple sets of heat dissipation holes, to ensure that the device can dissipate heat through this structure, thereby avoiding overload of the internal components of the device.

[0027] Please see Figure 5 This utility model provides a protection device for an AC / DC welding machine. The monitoring component 76 includes a mounting shell 761, a sensor 762, a terminal block 763, an integrated wiring harness 764, a detection wiring harness 765, and a protective shell 766. The mounting shell 761 is equipped with the sensor 762. The terminal block 763 is installed inside the sensor 762. The integrated wiring harness 764 is connected to the bottom of the mounting shell 761 and to the outside of the processor module 74. The detection wiring harness 765 is connected to the top of the mounting shell 761. The protective shell 766 is installed on the outside of the detection wiring harness 765, and the detection wiring harness 765 is connected to the top of the protective housing 1.

[0028] In this embodiment, multiple sets of detection harnesses 765 are provided, and all sets of detection harnesses 765 are connected to the top of the protective housing 1. The interior of the protective housing 766 is a hollow structure, which facilitates the assembly of multiple sets of integrated harnesses 764 inside the protective housing 766, so that the protective housing 766 can protect the integrated harnesses 764.

[0029] See Figures 1-5When in use, the power supply equipment and the conductive equipment are connected to the wiring port 6 set above the wiring terminal 2 and the output terminal 4 through the transmission wire, so that the protection box 1 can monitor the current between the equipment in real time. During this process, the display screen 5 can display the current data monitored in real time during this period.

[0030] Meanwhile, the detection harness 765 is distributed and installed in parallel within the protection box 1, transmitting the current from each port to the terminal block 763. The terminal block 763 then transmits the tested current back to the sensor 762. When the sensor 762 detects a fault current, it sends an early warning signal to the processor module 74. The monitoring component 76 then performs real-time monitoring of the current flowing in the protection box 1. The monitoring component 76 transmits the execution data to the processor module 74, enabling the processor module 74 to control the alarm 72 to issue an early warning, thus reminding staff to inspect the equipment. In addition, the fault data can be transmitted back to the cloud platform via the transmitter 75, allowing staff to view the fault point. This achieves real-time monitoring of the operating status of the protection box 1 through the monitoring device 7, enabling staff to view equipment fault points via mobile devices, thereby accelerating the efficiency of fault repair. This solves the problem in the original equipment where the traditional smart energy meter could not provide early warnings for leakage current and illegal load current, thus failing to eliminate potential electrical safety hazards.

[0031] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0032] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for an AC / DC welding machine, comprising a protective housing (1), a terminal block (2), a control button (3), an output terminal (4), a display screen (5), a wiring port (6), and a monitoring device (7), wherein the terminal block (2) is provided on the top of the protective housing (1), and the output terminal (4) is installed on the bottom of the terminal block (2). Its features are: The monitoring device (7) includes a mounting block frame (71), an alarm (72), a transmitter (73), a processor module (74), a transmitter (75), a monitoring component (76), and a power supply box (77). The mounting block frame (71) is fixed to the right end of the protective box (1). The alarm (72) is installed inside the mounting block frame (71). The processor module (74) is installed at the rear end of the alarm (72). The transmitter (73) is located below the processor module (74). The transmitter (75) is connected to the bottom of the mounting block frame (71) via a wire. The monitoring component (76) is connected to the top of the protective box (1). The power supply box (77) is installed at the rear end of the alarm (72).

2. The protective device for an AC / DC welding machine according to claim 1, characterized in that: The monitoring component (76) includes a mounting housing (761), a sensor (762), a junction box (763), an integrated wiring harness (764), a detection wiring harness (765), and a protective housing (766). The mounting housing (761) houses the sensor (762). The junction box (763) is installed inside the sensor (762). The integrated wiring harness (764) is connected to the bottom of the mounting housing (761) and to the outside of the processor module (74). The detection wiring harness (765) is connected to the top of the mounting housing (761). The protective housing (766) is installed on the outside of the detection wiring harness (765). The detection wiring harness (765) is connected to the top of the protective housing (1).

3. The protective device for an AC / DC welding machine according to claim 1, characterized in that: Wiring ports (6) are provided on the outside of the wiring terminal (2) and the output terminal (4). The display screen (5) is installed at the front end of the protective box (1). The control button (3) is mounted on the right end of the display screen (5). The right end of the monitoring device (7) is provided with the protective box (1). The transmitter (73), processor module (74), and transmitter (75) are vertically arranged at the rear end of the alarm (72).

4. The protective device for an AC / DC welding machine according to claim 2, characterized in that: The wiring board (763) is arranged in parallel inside the mounting housing (761), and both sets of the wiring board (763) are connected to the outside of the sensor (762).

5. The protective device for an AC / DC welding machine according to claim 1, characterized in that: The rear end of the mounting block frame (71) is provided with a heat dissipation window, which is composed of multiple sets of heat dissipation holes.

6. The protective device for an AC / DC welding machine according to claim 2, characterized in that: The detection harness (765) is provided in multiple sets, and all sets of the detection harness (765) are connected to the top of the protective box (1).

7. The protective device for an AC / DC welding machine according to claim 2, characterized in that: The protective outer shell (766) has a hollow internal structure.