Earth leakage protection device of overhead working truck

Abstract

The utility model relates to the technical field of electric leakage protection, in particular to an electric leakage protection device of an overhead working truck, which comprises a loading box body, and a protective plate piece is fixedly connected to the surface of the loading box body. According to the utility model, the connection clamping plate piece and the connection bolt piece on the connection mechanism are matched for use, and the connection bolt piece is in threaded connection in the corresponding through hole, so that the information protection box can be conveniently and rapidly maintained and replaced in the loading box body, and the use efficiency of the electric leakage protection switch of the overhead working truck is improved; through the display screen and the display lamp, data of the information protection box in the loading box body are displayed in real time, the working efficiency and quality of the electric leakage protection switch of the overhead working truck are improved, and the problems that when an existing overhead working truck and electric leakage protection equipment on the overhead working truck are used, a control interface is inconvenient to operate, and potential safety hazards exist are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of leakage current protection, and in particular to a leakage current protection device for aerial work vehicles. Background Technology

[0002] Aerial work platforms are high-performance mechanical devices primarily used in high-altitude operations such as construction, bridge building, power, and mining. They can quickly transport construction personnel and equipment to the work position, offering advantages such as high efficiency, ease of operation, good safety, and high flexibility, making them popular among on-site construction workers. Currently, when on-site construction workers rely on aerial work platforms for power tools and need to draw power from the mains, the common practice is to haphazardly fabricate a power cord on-site, pre-plugging one end and inserting it directly into a power outlet on the ground, while placing the other end, pre-plugged into a socket, directly into the work platform of the aerial work platform for the workers to draw power. The main drawbacks of this method are: the power cord is not fixed in place, resulting in a "flying wire" configuration that moves with the position of the work platform, causing interference and wear with other objects; there is no leakage protection device; and the quality of the temporary power cord, plug, and socket cannot be guaranteed, posing safety hazards and easily leading to electric shock accidents.

[0003] A safe power supply system for an aerial work platform boom (publication number CN222261625U) relates to the field of aerial work platform boom technology. The system includes an industrial plug and a residual current device (RCD) on a turntable. The industrial plug is connected to the input terminal of the RCD via a first cable, and the output terminal of the RCD is connected to a platform socket on the work platform via a second cable. The industrial plug is detachably connected to the industrial socket, which is connected to a wired plug via a third cable for connecting to a power supply. The second cable is sequentially threaded through the cable chain and the boom. This configuration allows for reasonable cable arrangement based on the boom's structural characteristics, and the inclusion of the RCD improves the safety of power supply to the aerial work platform boom.

[0004] The above technical solutions improve safety by setting up leakage current protection switches and corresponding components. However, leakage current protection switches mostly use air switches and other methods for protection, which cannot display data and require a high level of expertise to operate. This makes the control interface inconvenient to operate in the event of an accident, posing safety hazards and resulting in low efficiency of power grid insulation detection and leakage current protection. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a leakage protection device for aerial work platforms.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leakage current protection device for an aerial work platform includes a loading box. A protective plate is fixedly connected to the surface of the loading box. A display screen is fixedly connected to the upper surface of the protective plate. Multiple control keys are fixedly connected at equal intervals to the lower surface of the protective plate. An installation plate is fixedly connected to one side of the loading box. A connecting mechanism is installed on the inner wall of one side of the installation plate. A connecting clip is provided inside the connecting mechanism. An information protection box is fixedly connected to the bottom of the connecting clip. Two connecting ports are symmetrically opened on one side of the surface of the information protection box. Two network cable ports are opened on the other side of the surface of the information protection box. Eight through holes are evenly spaced on the surface of the installation plate.

[0008] Compared with the prior art, this utility model can facilitate the rapid maintenance and replacement of the information protection box inside the loading box by using the matching connecting plate and connecting bolts on the connecting mechanism. The connecting bolts are threaded into the corresponding through holes, which improves the efficiency of the aerial work platform's leakage protection switch. The display screen and indicator lights display the data of the information protection box inside the loading box in real time, improving the working efficiency and quality of the aerial work platform's leakage protection switch. This avoids the problems of inconvenient operation of the control interface and safety hazards of existing aerial work platforms and their leakage protection equipment.

[0009] Preferably, the connecting mechanism includes a connecting bolt threaded to the inner wall of one side of the mounting plate, and connecting plates are fixedly connected to both sides of the top of the connecting plate. One end of the connecting bolt passes through the two connecting plates in sequence and is threaded into the corresponding through hole.

[0010] Preferably, multiple indicator lights are fixedly connected at equal intervals at the bottom of the display screen.

[0011] Preferably, a protective screen is fixedly connected to the surface of the display screen, and reinforcing plates are fixedly connected to both sides of the surface of the protective plate.

[0012] Preferably, the surface of the mounting plate has multiple ventilation and heat dissipation holes.

[0013] The beneficial effects of this utility model are:

[0014] 1. By using the display screen, indicator lights, and control keys in combination, the display screen and indicator lights can display the data of the information protection box inside the loading box in real time, and the control keys can perform timely data processing, thereby improving the operating efficiency and quality of the leakage protection equipment on the aerial work platform.

[0015] 2. By using the information protection box, connecting plate and mounting plate and other components together, and connecting bolts threaded into the corresponding through holes, the information protection box can be quickly maintained and replaced in the loading box, improving the efficiency of the aerial work platform. Attached Figure Description

[0016] Figure 1 This is a front structural view of the present invention;

[0017] Figure 2 This is an overall structural diagram of the present invention;

[0018] Figure 3 This is a structural diagram of the information protection box and connecting components of this utility model;

[0019] Figure 4 This is a structural diagram of the mounting plate of this utility model.

[0020] In the diagram: 1. Protective panel, 2. Display screen, 3. Indicator light, 4. Control key, 5. Loading box, 6. Mounting plate, 7. Information protection box, 8. Connecting port, 9. Network cable interface, 10. Connecting bolt, 11. Connecting card plate, 12. Ventilation and heat dissipation hole, 13. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 The aerial work platform leakage protection device includes a loading box 5, which is used for the installation and protection of leakage protection components on the aerial work platform. A protective plate 1 is fixedly connected to the surface of the loading box 5. The display screen 2 and control key 4 are installed through the protective plate 1. The display screen 2 is fixedly connected to the upper surface of the protective plate 1. The display screen 2 adopts a dot matrix 240*128 graphic LCD display with a full Chinese menu structure. After power-on, the LCD screen will display information such as the insulation level of the three-phase power grid to ground and the power grid voltage level in real time. It can display various function menus and various data, parameters, fault event record tables and other information. It has an LCD sleep function. When there is no fault, the LCD will automatically go into sleep after 3 minutes. When the control key 4 is operated or a fault signal is received, the LCD will automatically turn on and display.

[0023] Reference Figure 1-4Multiple indicator lights 3 are fixedly connected at equal intervals at the bottom of the display screen 2 to indicate abnormalities in the transmission signal and promptly activate the leakage protection device of the aerial work platform to process the signal. A protective screen made of tempered glass is fixedly connected to the surface of the display screen 2 to protect the surface of the display screen 2. Reinforcing plates are fixedly connected to both sides of the surface of the protective plate 1 to reinforce the protective plate 1 from both sides. Multiple control keys 4 are fixedly connected at equal intervals at the lower part of the surface of the protective plate 1 to promptly process the data transmitted in the information protection box 7. A mounting plate 6 is fixedly connected to one side of the loading box 5. The internal information protection box 7 is fixed and installed by connecting the connecting clip plate 11 and the connecting bolt 10 through the through hole 13 on the mounting plate 6. Multiple ventilation and heat dissipation holes 12 are opened on the surface of the mounting plate 6 to dissipate heat from the information protection box 7 during operation and improve the leakage protection capability of the aerial work platform.

[0024] Reference Figure 1-4 A connecting mechanism is installed on one inner wall of the mounting plate 6. The connecting mechanism includes a connecting clip plate 11 and a connecting bolt 10 threadedly connected to the inner wall of one side of the mounting plate 6. The connecting bolt 10 is threadedly connected to the through hole 13 on the surface of the mounting plate 6. Connecting plates are fixedly connected to both sides of the top of the connecting clip plate 11. One end of the connecting bolt 10 passes through the two connecting plates in sequence and is threadedly connected to the corresponding through hole 13. The internal information protection box 7 is fixed and installed by connecting the connecting clip plate 11 and the connecting bolt 10 through the through hole 13 on the mounting plate 6, which facilitates the installation of the information protection box 7 in the loading box 5.

[0025] Reference Figure 1-4 The bottom of the connecting plate 11 is fixedly connected to the information protection box 7, which is located on the back of the display screen 2 and is connected via a data cable. Two connecting sockets 8 are symmetrically opened on one side of the surface of the information protection box 7, and two network cable interfaces 9 are opened on the other side of the surface of the information protection box 7. The information protection box 7 is connected to external supporting equipment through the connecting sockets 8 and the network cable interfaces 9. When the data cable is connected through the display screen 2, it is handled in time by the control key 4. The surface of the mounting plate 6 is provided with eight through holes 13 at equal intervals. According to the installation situation, the information protection box 7 is installed into the through holes 13 on the surface of the mounting plate 6 through the connecting plate 11 and the connecting bolts 10, which improves the work efficiency when maintaining the leakage protection equipment of the aerial work vehicle.

[0026] In this utility model, when using the leakage protection device on the aerial work platform, the data transmission line for low-voltage power grid insulation monitoring and leakage detection is connected to the leakage protection device through the connecting plug 8 and network cable plug interface 9 on the information protection box 7 inside the mounting plate 6. The data is processed by the matching processing mechanism inside the information protection box 7. The information protection box 7 can be quickly maintained and replaced inside the loading box 5 through the connecting bolts 10 and connecting clips 11 on the side wall, improving the efficiency of the aerial work platform's leakage protection device. The data inside the information protection box 7 is processed in a timely manner through the control keys 4 and display screen 2 on the protective plate 1, improving the operating efficiency and quality of the leakage protection device on the aerial work platform.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Overhead working truck leakage protection device, comprising a loading box (5), characterized in that: The surface of the loading box (5) is fixedly connected with a guard plate (1), the surface upper portion of the guard plate (1) is fixedly connected with a display screen (2), the surface lower portion of the guard plate (1) is fixedly connected with a plurality of control keys (4) at equal intervals, one side of the loading box (5) is fixedly connected with a mounting plate (6), one side inner wall of the mounting plate (6) is provided with a connecting mechanism, the connecting mechanism is provided with a connecting clamping plate (11) inside, the bottom of the connecting clamping plate (11) is fixedly connected with an information protection box (7), the surface of the information protection box (7) is symmetrically provided with two connecting socket pieces (8) on one side, the surface of the information protection box (7) is provided with two network cable plug interfaces (9) on the other side, the surface of the mounting plate (6) is provided with eight through holes (13) at equal intervals.

2. The aerial device ground fault protection device of claim 1, wherein: The connecting mechanism comprises a connecting bolt (10) which is screwed on one side inner wall of the mounting plate (6), both sides of the top of the connecting clamping plate (11) are fixedly connected with connecting plates, one end of the connecting bolt (10) penetrates through the two connecting plates in sequence and is screwed in the corresponding through hole (13).

3. The aerial device ground fault protection device of claim 1, wherein: The bottom of the display screen (2) is fixedly connected with a plurality of display lamps (3) at equal intervals.

4. The aerial device ground fault protection device of claim 1, wherein: The surface of the display screen (2) is fixedly connected with a protective screen, both sides of the surface of the guard plate (1) are fixedly connected with reinforcing plates.

5. The aerial device ground fault protection device of claim 1, wherein: The surface of the mounting plate (6) is provided with a plurality of ventilation and heat dissipation holes (12).

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