Fireproof charging box for AGV (Automatic Guided Vehicle)
By installing a flexible fireproof layer and a fusible connection inside the AGV charging box, the fire risk caused by electrical faults during charging is resolved, enabling automatic sealing and fire extinguishing, thus ensuring the safety of the warehouse.
Patent Information
- Application Number
- CN202520336114.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-28
AI Technical Summary
During the charging process, AGV transport vehicles are prone to electrical failures due to short circuits or aging, posing a risk of electrical sparks or battery fires due to high temperatures. The metal sheet metal parts of common charging boxes can easily ignite surrounding flammable materials at high temperatures, leading to warehouse fires.
A fireproof charging box was designed, which has a flexible fireproof layer and a fusible connection. The flexible fireproof layer prevents direct heat conduction, and the fusible connection automatically seals the AGV entrance and exit when the temperature is high. Combined with an induction automatic fire extinguisher and a high temperature alarm device, it prevents open flames from overflowing.
It effectively prevents open flames from spilling out of the charging box, thus preventing warehouse fires, ensuring safety and fire resistance, and achieving automatic sealing and fire extinguishing.
Smart Images
Figure CN223871883U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of intelligent warehousing technology, and more specifically, it is a fireproof charging box for AGV transport vehicles. Background Technology
[0002] When AGV transport vehicles are charging, electrical faults can easily occur due to short circuits, aging, etc. There is a risk of electric sparks or battery fire due to high temperature during the charging process. Common charging boxes usually use a single sheet metal part to prevent the spread of open flames. However, due to the high thermal conductivity of metal, the temperature of the sheet metal part is extremely high when the battery catches fire. If there are flammable materials around the charging box, the high temperature of the sheet metal part can easily ignite these flammable materials, thereby causing a warehouse fire and resulting in severe damage to the warehouse. Summary of the Invention
[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a fireproof charging box for AGV transport vehicles. It can automatically seal the fireproof charging box when the internal temperature is high, thereby preventing the open flame inside the fireproof charging box from overflowing. It can also prevent the fireproof plate from getting too hot when it catches fire, thereby preventing the sealing plate from igniting flammable materials around the fireproof charging box due to excessive temperature.
[0004] Technical Solution: To achieve the above objectives, this utility model provides a fireproof charging box for AGV transport vehicles, comprising a fireproof charging box, a frame, and a window formed around the frame by splicing several horizontal and vertical bars. A sealing plate is sealed to the inner side of each window, and each sealing plate has a vertical flange along its contour. Each vertical flange is sealed and fitted to the inner side of its corresponding window and locked by fasteners. A flame-retardant cavity is formed within the area enclosed by the four vertical flanges on the contour of the sealing plate, and a flexible fireproof layer is provided inside the flame-retardant cavity. Each fastener corresponds to a folding plate, which includes an integrally formed and mutually perpendicular pressing plate and a mounting plate. Several first mounting holes are provided on the vertical flanges, and second mounting holes are provided on the mounting plate. The fasteners pass through the corresponding second mounting holes and first mounting holes in sequence and are locked to the frame. The edge of the flexible fireproof layer is sandwiched between the pressing plate and the sealing plate.
[0005] Furthermore, it also includes an AGV transport vehicle, with an AGV entrance / exit on any one of the sealing plates located at the lower end of the frame. The AGV transport vehicle enters or exits the internal space of the fireproof charging box through the AGV entrance / exit.
[0006] Furthermore, the lower end of the frame is fixedly and sealed on the ground, and no sealing plate is installed in the window of the frame that is in contact with the ground. The AGV entrance and exit are perpendicular to each other, and no crossbar is set on the side of the window near the AGV entrance and exit.
[0007] Furthermore, a suspension beam is provided on the sealing plate above the AGV entrance and exit, and the suspension beam is inside the fireproof charging box; a fusible connection is provided on the suspension beam, and a gate is suspended at the lower end of the fusible connection. When the internal space of the fireproof charging box reaches a certain temperature, the fusible connection spontaneously breaks and releases the gate.
[0008] Furthermore, the fusible connection includes at least two fusible links and a suspension arm. The two fusible links are respectively connected to both ends of the suspension arm. The ends of the two fusible links away from the suspension beam are both connected to the suspension beam. The lower end of the suspension arm is connected to the upper end of the gate.
[0009] Furthermore, a sealing door frame is provided on the sealing plate installed in the window on the side of the frame away from the AGV entrance and exit. An outward opening door is provided on one side of the sealing door frame. The sealing door frame and the outward opening door are normally closed. In the closed state, the sealing door frame and the outward opening door are in sealed contact.
[0010] Beneficial effects: This utility model provides a fireproof charging box for AGV transport vehicles. By incorporating a flexible fireproof layer within the fireproof board, the temperature inside the charging box cannot be directly transferred to the fireproof board, preventing the fireproof board from overheating and thus avoiding the sealing plate from igniting flammable materials around the charging box. Furthermore, the fusible connection and gate at the AGV input port automatically seal the charging box when the internal temperature reaches a set value, preventing the leakage of open flames. Attached Figure Description
[0011] Figure 1 This is a scene illustration of a fireproof charging box for an AGV transport vehicle according to the present invention.
[0012] Figure 2 This is a structural schematic diagram of a fireproof charging box for an AGV transport vehicle according to the present invention;
[0013] Figure 3 This is a magnified view of a portion of the image (A).
[0014] Figure 4 A schematic diagram of the installation structure where the sealing plate is mounted on the frame;
[0015] Figure 5 A schematic diagram of the structure of an AGV (Automated Guided Vehicle) being charged inside a fireproof charging box;
[0016] Figure 6 A schematic diagram of the structure of an AGV transport vehicle after it is charged in a fireproof charging box and an open flame is generated.
[0017] Figure 7This is a schematic diagram of an outward-opening door structure. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] like Figure 2 and 4 As shown, a fireproof charging box for an AGV (Automated Guided Vehicle) includes a fireproof charging box 1. The fireproof charging box 1 includes a frame 8, which is composed of several horizontal and vertical bars. Several windows 7 are formed around the frame 8. A sealing plate 9 is sealed on the inner side of each window 7. The sealing plate 9 is a thin plate, which reduces the overall weight of the fireproof charging box 1 and makes installation or disassembly more convenient. Each sealing plate 9 has a vertical flange 18 along its contour. Each vertical flange 18 is sealed and fitted to the inner side of the corresponding window 7 and locked by fasteners 14, which are locking bolts or screws. A flame-retardant cavity 19 is formed within the area enclosed by the four vertical flanges 18 on the contour of the sealing plate 9. A flexible fireproof layer 10 is provided in the flame-retardant cavity 19. The flexible fireproof layer 10 is a calcium silicate flexible fireproof roll material. Each fastener 14 corresponds to a folding plate 11, which includes a... The frame 8 has a clamping plate 12 and a mounting plate 13 that are perpendicular to each other. The vertical flange 18 has several first mounting holes 20 and the mounting plate 13 has second mounting holes 21. When the first mounting holes 20 and the second mounting holes 21 are on the same axis, the fasteners 14 pass through the corresponding second mounting holes 21 and first mounting holes 20 in sequence and are locked onto the frame 8. At this time, the outer side of the vertical flange 18 is in contact with the inner side of the window 7, the mounting plate 13 is in contact with the inner side of the vertical flange 18, the clamping plate 12 is in contact with the flexible fireproof layer 10, and the edge of the flexible fireproof layer 10 is sandwiched between the clamping plate 12 and the sealing plate 9. The frame 8 may have several threaded holes on the inner side of each window 7 relative to each first mounting hole 20, or it may be possible to set nuts that can be threaded to each fastener 14, or other settings that can ensure that the fasteners 14 lock the folding plate 11 and the vertical flange 18 onto the frame 8.
[0020] Since the flexible fireproof layer 10 is made of calcium silicate flexible fireproof roll material, when it needs to be replaced, it is not necessary to remove all the folding plates 11 that press the flexible fireproof layer 10 from the frame 8. Only the folding plates 11 on any one horizontal or vertical bar in each window 7 need to be removed to quickly complete the loading and unloading of the flexible fireproof layer 10. Select any one horizontal or vertical bar in the window 7 where the flexible fireproof layer 10 needs to be replaced, and designate this bar as the loading / unloading bar. Remove all the folding plates 11 on the loading / unloading bar. At this point, the other folding plates 11 exert only a small pressing force on the flexible fireproof layer 10. Workers only need to use minimal pulling force to pull the flexible fireproof layer 10 out of the flame-retardant cavity 19. Then, the new flexible fireproof layer 10 can be installed. During installation, the worker pulls one end of the flexible fireproof layer 10 into the flame-retardant cavity 19 from the side where the loading and unloading rod is located, and pulls the edge of the flexible fireproof layer 10 under the folding plate 11 installed on the other rods of the window 7. At this time, the folding plate 11 installed on the other rods of the window 7 has a certain pre-pressure on the three edges of the flexible fireproof layer 10, so that the flexible fireproof layer 10 can fit with the sealing plate 9. Finally, the replacement work can be completed by fastening the folding plate 11 on the loading and unloading rod to the frame 8 with fasteners 14. The replacement process is simple and can ensure that the flexible fireproof layer 10 and the sealing plate 9 fit together, thereby preventing the sealing plate 9 from directly participating in heat exchange when a fire occurs inside the fireproof charging box 1, and preventing the temperature of the sealing plate 9 from becoming too high.
[0021] like Figure 1 As shown, it also includes an AGV transport vehicle 2, which travels along a predetermined route on the ground. The lower end of the frame 8 is fixedly and sealed on the ground and located on the travel path of the AGV transport vehicle 2. An AGV entrance / exit 3 is provided on any one of the sealing plates 9 at the lower end of the frame 8. The AGV transport vehicle 2 enters or exits the internal space of the fireproof charging box 1 through the AGV entrance / exit 3. No sealing plate 9 is installed in the window 7 on the frame 8 that is in contact with the ground. The AGV entrance / exit 3 is perpendicular to the window 7, and no crossbar is provided on the side of the window 7 near the AGV entrance / exit 3, thereby avoiding the AGV transport vehicle 2 being unable to enter or exit the internal space of the fireproof charging box 1 through the AGV entrance / exit 3 due to the vertical flange 18 and the crossbar protruding from the ground.
[0022] A suspension beam 4 is provided on the sealing plate 9 above the AGV entrance / exit 3. The suspension beam 4 is inside the fireproof charging box 1. The sealing plate 9 above the AGV entrance / exit 3 is referred to as the entrance / exit sealing plate. The side of the entrance / exit sealing plate near the AGV entrance / exit 3 does not have a vertical flange 18. The flexible fireproof layer 10 attached to the entrance / exit sealing plate is sandwiched between the entrance / exit sealing plate and the suspension beam 4. A fusible connection part 5 is provided on the suspension beam 4. A gate 6 is suspended at the lower end of the fusible connection part 5. The gate 6 is located inside the fireproof charging box 1 and is attached to the entrance / exit sealing plate. When the internal space of the fireproof charging box 1 reaches a certain temperature, the fusible connection part 5 spontaneously breaks and releases the gate 6. The gate 6 slides vertically relative to the entrance / exit sealing plate and seals the AGV entrance / exit 3, thereby making the internal space of the fireproof charging box 1 a sealed space.
[0023] Because a flexible fireproof layer 10 is provided on one side of the sealing plate 9 inside the fireproof charging box 1, when the temperature inside the fireproof charging box 1 rises, the sealing plate 9 cannot directly exchange heat with the internal space of the fireproof charging box 1. Therefore, the temperature of the sealing plate 9 is lower than the temperature inside the fireproof charging box 1. Therefore, if the suspension beam 4 is placed outside the fireproof charging box 1, after a fire has occurred inside the fireproof charging box 1 and open flames have overflowed, due to the obstruction of the sealing plate 9 and the gate 6, the open flames overflowing from the AGV entrance / exit 3 to the outside of the fireproof charging box 1 cannot directly contact the fusible connection part 5. Furthermore, due to the presence of the flexible fireproof layer 10, the temperature of the sealing plate 9 is also... The temperature reached is such that the fusible connection 5 breaks, preventing the gate 6 from descending and causing the open flame inside the fireproof charging box 1 to continue to leak out, leading to a warehouse fire. Therefore, the suspension beam 4 needs to be installed inside the fireproof charging box 1 so that the fusible connection 5 can directly exchange heat with the interior of the fireproof charging box 1. When the temperature inside the fireproof charging box 1 reaches the temperature required for the fusible connection 5 to melt, the fusible connection 5 will break on its own, causing the gate 6 to descend and seal the AGV entrance / exit 3, thereby preventing the open flame or high-temperature smoke inside the fireproof charging box 1 from leaking to the outside of the fireproof charging box 1, thus avoiding a warehouse fire.
[0024] like Figure 3As shown, the fusible connection 5 includes at least two fusible links 15 and a suspension arm 16. The two fusible links 15 are respectively connected to both ends of the suspension arm 16. The ends of the two fusible links 15 away from the suspension beam 4 are both connected to the suspension beam 4. The lower end of the suspension arm 16 is connected to the upper end of the gate plate 6, and the suspension arm 16 is located at the center of the upper end of the gate plate 6. The fusible links 15 are made of Wood's alloy, and the melting temperature of the fusible links 15 is 70°. This allows the gate plate 6 to seal the AGV entrance / exit 3 when no open flame is generated inside the fireproof charging box 1, thereby preventing the open flame generated inside the fireproof charging box 1 from overflowing from the AGV entrance / exit 3 to the outside of the fireproof charging box 1.
[0025] The sealing plate 9 installed in the window 7 at the top of the frame 8 is called the top plate. Several hooks 23 are provided on the side of the top plate near the inside of the fireproof charging box 1. The hooks are equipped with automatic fire extinguishers with induction. The automatic fire extinguishers with induction are connected to the external fire extinguishing material tank. The automatic fire extinguishers with induction do not require power control to spray the fire extinguishing material into the inside of the fireproof charging box 1. When smoke or open flame is generated inside the fireproof charging box 1, the temperature inside the fireproof charging box 1 will rise sharply. When the temperature inside the fireproof charging box 1 is higher than the sensing temperature of the automatic fire extinguisher with induction, the automatic fire extinguisher with induction releases the fire extinguishing material into the inside of the fireproof charging box 1.
[0026] The fireproof charging box 1 is also equipped with a high-temperature alarm device, which is located on the outside of the fireproof charging box 1. The high-temperature alarm device is equipped with a temperature sensor, which passes through the sealing plate 9 on which the high-temperature alarm device is installed and the flexible fireproof layer attached to the sealing plate 9 into the interior of the fireproof charging box 1. The temperature sensor can detect the temperature change inside the fireproof charging box 1. When the temperature sensor senses that the temperature inside the fireproof charging box 1 is higher than the alarm temperature of the high-temperature alarm device, the high-temperature alarm device will sound an alarm, and the management personnel will take fire-fighting measures for the fireproof charging box 1 that has sounded the alarm. The alarm temperature of the high-temperature alarm device should not be higher than the melting temperature of the fusible sheet 15.
[0027] like Figure 7As shown, a sealing door frame 22 is provided on the sealing plate 9 installed in the window 7 on the side of the frame 8 away from the AGV entrance / exit 3. An outward opening door 17 is provided on one side of the sealing door frame 22. The sealing door frame 22 and the outward opening door 17 are normally closed. In the closed state, the sealing door frame 22 and the outward opening door 17 are in sealed contact. When no fire occurs in the fireproof charging box 1, maintenance personnel enter the fireproof charging box 1 through the outward opening door 17 to monitor and record the fire performance of the induction automatic fire extinguisher and the flexible fireproof layer 10, and to repair the charging device for charging the AGV transport vehicle 2 inside the fireproof charging box 1. When a fire occurs in the fireproof charging box 1, maintenance personnel enter the fireproof charging box 1 through the outward opening door 17 to replace the induction automatic fire extinguisher and the flexible fireproof layer 10, and to repair the charging device for charging the AGV transport vehicle 2 inside the fireproof charging box 1.
[0028] The working method of the fireproof charging box for AGV transport vehicles according to this utility model is as follows: When the AGV transport vehicle 2 enters the interior of the fireproof charging box 1 through the AGV entrance / exit 3 and is charged by the charging device, if either the AGV transport vehicle 2 or the charging device malfunctions during the charging process, resulting in high-temperature smoke or open flame, the temperature inside the fireproof charging box 1 will rise sharply. When the temperature inside the fireproof charging box 1 exceeds the melting temperature of the fusible link 15 on the fusible connection 5, the fusible link 15 on the fusible connection 5 melts and breaks at high temperature, causing the gate 6 to slide vertically downward relative to the frame 8 until it completely seals the AGV entrance / exit 3. At this time, the gate 6 makes the interior space of the fireproof charging box 1 a sealed independent space, and the temperature inside the fireproof charging box 1 is already higher than the high temperature. When the alarm temperature of the alarm device is detected, the high-temperature alarm will sound. Upon hearing the alarm, the management personnel will first shut off the power to the fireproof charging box 1 that triggered the alarm, then evacuate the warehouse staff, and notify professional firefighters to set up fire prevention facilities near the fireproof charging box 1 in preparation for emergencies. When the temperature inside the fireproof charging box 1 exceeds the sensing temperature of the automatic fire extinguisher, the automatic fire extinguisher will release extinguishing material into the fireproof charging box 1 to extinguish any open flames inside until the temperature inside the fireproof charging box 1 returns to normal. After a considerable period of time, maintenance personnel can enter the fireproof charging box 1 through the outward-opening door 17 to replace the automatic fire extinguisher and the flexible fireproof layer 10, and to repair the charging device inside the fireproof charging box 1 that charges the AGV transport vehicle 2.
[0029] The above are the preferred embodiments described in this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A fireproof charging box for AGV transport vehicles, characterized in that: The fireproof charging box (1) includes a frame (8), which is spliced from several horizontal bars and several vertical bars. Several windows (7) are formed around the frame (8). A sealing plate (9) is installed on the inner side of each window (7). Each sealing plate (9) has a vertical flange (18) along its contour around its perimeter. Each vertical flange (18) is sealed and fitted to the inner side of the corresponding window (7) and locked by fasteners (14). A flame-retardant cavity (19) is formed within the area enclosed by the four vertical flanges (18) on the contour of the sealing plate (9). (19) is provided with a flexible fireproof layer (10); each fastener (14) corresponds to a folding plate (11), the folding plate (11) includes a pressing plate (12) and a mounting plate (13) that are integrally set and perpendicular to each other, a number of first mounting holes (20) are opened on the vertical flange (18), and a second mounting hole (21) is opened on the mounting plate (13). The fastener (14) passes through the corresponding second mounting hole (21) and first mounting hole (20) in sequence and is locked on the frame (8). The edge of the flexible fireproof layer (10) is sandwiched between the pressing plate (12) and the sealing plate (9).
2. The fireproof charging box for AGV transport vehicles according to claim 1, characterized in that: It also includes an AGV transport vehicle (2), and an AGV entrance / exit (3) is provided on any one of the sealing plates (9) at the lower end of the frame (8). The AGV transport vehicle (2) enters or exits the internal space of the fireproof charging box (1) through the AGV entrance / exit (3).
3. A fireproof charging box for an AGV transport vehicle according to claim 2, characterized in that: The lower end of the frame (8) is fixed and sealed on the ground. No sealing plate (9) is installed in the window (7) on the frame (8) that is in contact with the ground. The AGV entrance (3) is perpendicular to the window (7), and no crossbar is installed on the side of the window (7) near the AGV entrance (3).
4. A fireproof charging box for an AGV transport vehicle according to claim 2, characterized in that: A suspension beam (4) is provided on the sealing plate (9) above the AGV entrance (3), and the suspension beam (4) is inside the fireproof charging box (1); a fusible connection part (5) is provided on the suspension beam (4), and a gate plate (6) is suspended at the lower end of the fusible connection part (5). When the internal space of the fireproof charging box (1) reaches a certain temperature, the fusible connection part (5) breaks spontaneously and releases the gate plate (6).
5. A fireproof charging box for an AGV transport vehicle according to claim 4, characterized in that: The fusible connection (5) includes at least two fusible tabs (15) and a suspension arm (16). The two fusible tabs (15) are respectively connected to both ends of the suspension arm (16). The ends of the two fusible tabs (15) away from the suspension beam (4) are both connected to the suspension beam (4). The lower end of the suspension arm (16) is connected to the upper end of the gate (6).
6. A fireproof charging box for an AGV transport vehicle according to claim 1, characterized in that: A sealing door frame (22) is provided on the sealing plate (9) installed in the window (7) on the side of the frame (8) away from the AGV entrance (3). An outward opening door (17) is provided on one side of the sealing door frame (22). The sealing door frame (22) and the outward opening door (17) are normally closed. In the closed state, the sealing door frame (22) and the outward opening door (17) are in sealed contact.