Electric bus fire suppression device that can be loaded and unloaded using a hydraulic cylinder

Abstract

The present invention relates to an electric bus fire suppression device that can be loaded and unloaded via a hydraulic cylinder. [Solution] This relates to a fire suppression device for electric buses that can be loaded and unloaded using a hydraulic cylinder, and includes a rotating auxiliary plate installed at the rear of the loading box of the transport vehicle, a hydraulic cylinder placed in the loading box of the transport vehicle, a folding frame that can be unfolded or folded using hydraulic pressure, a mounting base that is placed on one side of the folding frame and configured to engage with the end of the cylinder rod that is extended from the hydraulic cylinder, and a fire extinguishing water injection lance that pierces a battery placed on top of the electric bus and then injects fire extinguishing water into the battery.

Description

[Technical Field]

[0001] The present invention relates to a fire suppression device for electric buses that can be loaded and unloaded via a hydraulic cylinder. More specifically, the device can be easily loaded and unloaded onto a transport vehicle via a hydraulic cylinder, and when placed in close contact with a fire-hit electric bus, the device can hydraulically drill holes in the battery located on top of the electric bus and inject fire-extinguishing water to quickly extinguish the fire. [Background technology]

[0002] Recently, the number of registered electric vehicles in Korea has been increasing, and major forms of public transportation such as taxis and buses are also being converted to electric vehicles. As a result, fires are occurring frequently, and the characteristics of electric vehicle batteries make it difficult to extinguish fires, making it an urgent issue to take safety measures to deal with electric vehicle fires.

[0003] In particular, electric buses have high-capacity energy-storing batteries placed on top of the bus, and if the battery catches fire due to an accident or other reasons, the temperature at the heat point is very high, and the densely packed structure causes continuous heat transfer, leading to re-ignition, making it difficult to extinguish the fire.

[0004] If an electric bus battery catches fire, it is difficult to extinguish and easily reignites until it is completely burned, making it difficult to extinguish the fire using large amounts of firewater for a long period of time.

[0005] The most effective way to extinguish a fire is to use a crane to lift the burning electric vehicle and place it in a tank filled with water. However, this method is difficult to apply to electric buses due to their weight and size. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention is intended to solve the above-mentioned problems, and its purpose is to provide an electric bus fire suppression device that can be easily loaded and unloaded onto a transport vehicle via a hydraulic cylinder, and that can quickly extinguish a fire by hydraulically drilling holes in the battery located on top of the electric bus while in close contact with the electric bus where a fire has occurred and injecting fire extinguishing water. [Means for solving the problem]

[0007] The electric bus fire suppression device 100 capable of being loaded and unloaded via a hydraulic cylinder according to an embodiment of the present invention includes a rotation assist plate 110 installed at the rear of a loading box of a transport vehicle, a hydraulic cylinder 120 disposed in the loading box of the transport vehicle, a folding frame 130 that is unfolded or folded via hydraulic pressure, a mounting base 140 disposed on one side of the folding frame 130 and configured to engage with an end of a cylinder rod 121 that is drawn out from the hydraulic cylinder 120, and a mounting base 140 disposed on the folding frame 130 and configured to pierce a battery disposed on the top of the electric bus and then mount the battery on the loading box. and a fire extinguishing water spray lance 150 that sprays fire extinguishing water supplied from a fire extinguishing water tank mounted on the transport vehicle into the battery. The mounting base 140 may be attached to the rotation assist plate 110 while being engaged with an end of the cylinder rod 121, thereby maintaining a state in which it is loaded on the transport vehicle. When the cylinder rod 121 is pulled out, the mounting base 140 moves toward the ground through a sliding action while being in close contact with the rotation assist plate 110, and the mounting base 140 and the rotation assist plate 110 are separated from each other by disengaging from the end of the cylinder rod 121, thereby completing loading and unloading.

[0008] The rotation assist plate 110 according to one embodiment of the present invention may include a base plate 111 arranged at the rear of the bottom surface of the loading box, a seating round bar 112 arranged above the base plate 111 and on which the mounting base 140 is seated, and an engagement means 113 arranged above the base plate 111 and spaced a predetermined distance from the seating round bar 112, with which one side of the mounting base 140 is engaged when the mounting base 140 is seated on the seating round bar 112.

[0009] The foldable frame 130 according to an embodiment of the present invention includes a lower frame 131, an upper frame 132 rotatably connected to the lower frame 131 at one side by a hinge, a folding cylinder 133 connected between the lower frame 131 and the upper frame 132 and controlling the rotation of the upper frame 132 through hydraulic pressure, an upper fixed frame rotatably connected to the upper frame 132 at one side by a hinge and in close contact with the upper surface of the electric bus, and a folding cylinder 133 connected between the upper frame 132 and the upper fixed frame 134 and controlling the rotation of the upper frame 132 through hydraulic pressure. The electric bus may include an upper fixed cylinder 135 that controls the rotation of the fixed frame 134, a lower fixed frame 136 that is rotatably connected at one side to the lower frame 131 via a hinge and is in close contact with the underside of the electric bus, a lower fixed cylinder 137 that is connected between the lower frame 131 and the lower fixed frame 136 and controls the rotation of the lower fixed frame 136 via hydraulic pressure, and a drilling cylinder 138 that is disposed at an end of the upper fixed frame 134 and pushes the fire extinguishing water spray lance 150 located at the top of the electric bus toward the battery.

[0010] According to one embodiment of the present invention, the folding cylinder 133, the upper fixed cylinder 135, the lower fixed cylinder 137, and the drilling cylinder 138 may be hydraulically controlled by being connected to a hydraulic pump 200 disposed on one side of the transport vehicle via a hydraulic supply line.

[0011] According to one embodiment of the present invention, the mounting base 140 is disposed on one side of the lower frame 131, has a certain length, and may slide on the seating round bar 112 while seated on the seating round bar 112.

[0012] The mounting base 140 according to an embodiment of the present invention may include a rotation locking step 141, one side of which is engaged with the seating round bar 112 and rotates at an angle of 90 degrees while being seated on the seating round bar 112 and sliding on the seating round bar 112 during loading and unloading, and a rotation limiting round bar 142, which is engaged with the engaging means 113 during loading to limit the rotation.

[0013] The extinguishing water spraying lance 150 according to an embodiment of the present invention may be connected to a fire extinguishing water pump 300 disposed on one side of the extinguishing water tank via an extinguishing water supply line to receive the supply of extinguishing water.

[0014] The extinguishing water spraying lance 150 according to an embodiment of the present invention includes a lance head 151 that drills a hole in the upper part of the battery using hydraulic pressure, and an extinguishing water nozzle 152 that is formed on a side of the body of the extinguishing water spraying lance 150 and sprays the extinguishing water outward, and the lance head 151 may be replaceably connected to the body of the extinguishing water spraying lance 150.

[0015] The body of the fire extinguishing water jetting lance 150 according to an embodiment of the present invention may be formed in multiple stages, and the fire extinguishing water nozzles 152 may be disposed in each stage.

[0016] According to an embodiment of the present invention, the drilling cylinder 138 and the fire extinguishing water injection lance 150 may be configured so that their directions can be switched by releasing bolts from the ends of the upper fixing frame 134 . [Effects of the Invention]

[0017] The present invention has the advantage that loading and unloading onto a transport vehicle can be easily performed via a hydraulic cylinder.

[0018] Furthermore, according to the present invention, the direction of the drilling cylinder and the fire-extinguishing water injection lance can be easily switched by releasing the bolt, which has the advantage of enabling the fire to be quickly extinguished by hydraulically drilling holes in the battery located on the side of an overturned electric bus and injecting fire-extinguishing water.

[0019] The present invention also has the advantage of being able to quickly extinguish a fire by hydraulically drilling holes in the battery located on top of the electric bus while in close contact with the electric bus where a fire has occurred and injecting fire-extinguishing water.

[0020] Furthermore, the present invention has the advantage that the volume can be minimized during storage and transportation due to its foldable structure, and it can be easily and conveniently transported to the fire scene. In addition, according to the present invention, since the lance is tightly and securely fixed to the top and bottom of the electric bus, the lance for spraying fire extinguishing water does not come loose or become detached during the process of drilling the battery using hydraulic pressure and spraying high-pressure fire extinguishing water into the battery, which has the advantage of allowing for stable fire extinguishing. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a diagram illustrating the overall configuration of a fire suppression device 100 for an electric bus that can be loaded and unloaded using a hydraulic cylinder according to an embodiment of the present invention. [Figure 2] 1 is a diagram showing a state in which the electric bus fire suppression device 100, which can be loaded and unloaded via a hydraulic cylinder shown in FIG. 1, is loaded onto a transport vehicle. [Figure 3] 10A and 10B are diagrams showing the configuration of the rotation assist plate 110 in more detail. [Figure 4] 10 is a diagram showing the configuration of the folding frame 130 in more detail. FIG. [Figure 5] 13 is a diagram showing a state in which the upper frame 132 is rotated from the lower frame 131 by the folding cylinder 133. FIG. [Figure 6] This figure shows the state in which the upper fixed frame 134 and the lower fixed frame 136 are rotated from the upper frame 132 and the lower frame 131 by the upper fixed cylinder 135 and the lower fixed cylinder 137, respectively, and are in close contact with the upper and lower parts of the electric bus. [Figure 7] 10 is a view showing a state in which a fire-extinguishing water injection lance 150 is inserted toward the inside of the battery by a drilling cylinder 138 to drill a hole in the battery. FIG. [Figure 8] 10 is a diagram showing the configuration of the mounting base 140 in more detail. FIG. [Figure 9] 10A and 10B are diagrams showing the process of the folding frame 130 being unloaded from the transport vehicle by pulling out the cylinder rod 121. [Figure 10] FIG. 2 is a diagram showing the fire-extinguishing water injection lance 150 in more detail. [Figure 11] 10 is a view showing a state in which a fire-extinguishing water injection lance 150 is inserted from the side of an overturned electric bus toward the inside of the battery and perforates the battery. DETAILED DESCRIPTION OF THE INVENTION

[0022] Hereinafter, specific details for carrying out the present invention will be described in detail with reference to the accompanying drawings. However, in the following description, detailed descriptions of well-known functions or configurations will be omitted if they may unnecessarily obscure the gist of the present invention.

[0023] FIG. 1 is a diagram illustrating the overall configuration of a fire suppression system 100 for electric buses, which can be loaded and unloaded using a hydraulic cylinder according to one embodiment of the present invention. FIG. 2 is a diagram illustrating the state in which the fire suppression system 100 for electric buses, which can be loaded and unloaded using a hydraulic cylinder, shown in FIG. 1, is loaded onto a transport vehicle.

[0024] Referring to Figures 1 and 2, an electric bus fire suppression device 100 capable of loading and unloading using a hydraulic cylinder according to one embodiment of the present invention may include a pivoting auxiliary plate 110, a hydraulic cylinder 120, a folding frame 130, a mounting base 140, and a fire extinguishing water spray lance 150.

[0025] Here, a fire extinguishing water tank can be installed in the loading box of the transport vehicle (for example, a truck).

[0026] The fire water tank is a tank that stores fire water for extinguishing a fire that breaks out in the battery of an electric bus, and can be loaded onto a transport vehicle and transported to the fire scene together with the foldable frame 130 regardless of storage capacity.

[0027] The size and volume of such a fire extinguishing water tank can be changed according to the loading capacity of the transport vehicle, and for example, a tank having a capacity of 1 ton can be applied.

[0028] In one embodiment, a fire extinguishing water pump 300 may be disposed on one side of the fire extinguishing water tank. The fire extinguishing water pump 300 supplies the fire extinguishing water stored in the fire extinguishing water tank to the fire extinguishing water spraying lance 150, and generates sufficient water pressure to spray the fire extinguishing water strongly into the battery located above the electric bus.

[0029] In one embodiment, the fire extinguishing water tank, the fire extinguishing water pump 300, and the fire extinguishing water spray lance 150 may be connected to each other via a fire extinguishing water supply line. The fire extinguishing water supply line may be formed to have a sufficient length (e.g., 10 m) to reach the fire extinguishing water spray lance 150 from the fire extinguishing water tank.

[0030] In addition, in one embodiment, the fire extinguishing water supply line may be made of a heat-dissipating material or may be coated on the outside to prevent it from melting in the high temperature heat generated from the battery located on the electric bus.

[0031] Also, although not shown in the drawings, in one embodiment, the fire extinguishing water supply line can be transported in a circularly wound state using a winch or the like, and can be automatically unwound when the foldable frame 130 described below is separated from the transport vehicle and transported to the electric bus.

[0032] The rotation assist plate 110 is installed at the rear of the loading box of the transport vehicle and serves to fix the folding frame 130 so that it does not come apart when transported by the transport vehicle, and also serves as a guide for the stand 140 to sit on and rotate during loading and unloading. This will be described next.

[0033] FIG. 3 is a diagram showing the configuration of the rotation assist plate 110 in more detail.

[0034] Referring to Figure 3, the rotation assist plate 110 may include a base plate 111 arranged at the rear of the bottom surface of the loading box, a seating round bar 112 arranged above the base plate 111 and on which the mounting base 140 is seated, and an engagement means 113 arranged above the base plate 111 with the seating round bar 112 spaced a certain distance from the base plate 111, with which one side of the mounting base 140 is engaged when the mounting base 140 is seated on the seating round bar 112.

[0035] The base plate 111 can be firmly installed at the rear of the bottom of the loading box of the transport vehicle, and the seating round rods 112 and the engagement means 113 can be arranged at regular intervals on the upper side.

[0036] In this case, the seating round bar 112 can serve as a seating space for the mounting base 140 (described later) to sit on, and as a pivot axis for the mounting base 140 to rotate at a 90-degree angle during the loading or unloading process.

[0037] The engaging means 113 is formed in an L-shaped cross section so that one side of the base 140 (described later) can be engaged therewith, and when the folding frame 130 is loaded onto a transport vehicle, the base 140 is engaged with the engaging means 113, so that the base 140 can be maintained firmly fixed without being separated from the rotation assisting plate 110, as will be described later.

[0038] The folding frame 130 can be attached to a transport vehicle, transported to a fire scene, and then separated from the transport vehicle to fit closely to the electric bus. Basically, the folding frame 130 can be maintained in a folded state and then unfolded by hydraulic pressure. This will be described in more detail below.

[0039] FIG. 4 is a diagram showing the configuration of the folding frame 130 in more detail.

[0040] Referring to FIG. 4, the folding frame 130 can be roughly divided into a lower frame 131 seated on the bottom and an upper frame 132 rotatably connected to the lower frame 131 by a hinge.

[0041] More specifically, the lower frame 131 sits on the bottom surface and serves to support the folding frame 130 so that it does not tip over, and a plurality of wheels may be arranged on the underside of the lower frame 131 to facilitate movement.

[0042] In one embodiment, a hinge for rotating the upper frame 132 is disposed above the lower frame 131, and the upper frame 132 can rotate from the lower frame 131 via the hinge to stand upright in an upward direction. This is because the upper frame 132 is folded to minimize the volume during normal operation or when the foldable frame 130 is being transported, and the upper frame 132 is rotated from the lower frame 131 to increase the height of the electric bus during preparations for fire suppression.

[0043] The upper frame 132 is shorter than the lower frame 131 or has a length corresponding to the length of the lower frame 131, and has a structure in which it can be rotated upward from the lower frame 131 via a hinge to be unfolded or rotated downward to be folded.

[0044] The upper frame 132 can be rotated from the lower frame 131 via a folding cylinder 133 via hydraulic pressure, which will be described next.

[0045] FIG. 5 is a diagram showing a state in which the upper frame 132 is rotated from the lower frame 131 by the folding cylinder 133.

[0046] 5, the lower frame 131 and the upper frame 132 are connected to each other via a hinge, and the lower frame 131 and the upper frame 132 are connected to each other via a folding cylinder 133. The folding cylinder 133 is a hydraulic cylinder, and the length of the cylinder can be reduced by hydraulic pressure to pull the upper frame 132 upright, or the length of the cylinder can be extended to push the upper frame 132 to be folded downward. The folding cylinder 133 is connected to a hydraulic pump 200 disposed on one side of the transport vehicle via a hydraulic supply line, and can be controlled by hydraulic pressure.

[0047] Here, the hydraulic pump 200 is connected to the folding cylinder 133 via a high-pressure hydraulic supply line, and by adjusting the length of the cylinder rod of the folding cylinder 133 via hydraulic pressure, the upper frame 132 can be pulled upright or pushed to be folded downward.

[0048] An upper fixed frame 134 is disposed above the upper frame 132. One side of the upper fixed frame 134 is rotatably connected to the upper frame 132 by a hinge, and the upper fixed frame 134 is in close contact with the upper surface of the electric bus.

[0049] The upper fixing frame 134 may be connected to the upper frame 132 via a hinge so as to have a certain length forward (toward the electric bus) based on the upright state of the upper frame 132. The lower surface of the upper fixing frame 134 may be in close contact with the upper surface of the electric bus, and may be formed with a length sufficient to reach the center of the battery arranged on the top of the electric bus.

[0050] The upper fixed frame 134 can be rotated up and down from the upper frame 132 via the upper fixed cylinder 135, which will be described next.

[0051] FIG. 6 shows the state in which the upper and lower fixed frames 134 and 136 are rotated from the upper and lower frames 132 and 131 by the upper and lower fixed cylinders 135 and 137, respectively, and are brought into close contact with the upper and lower parts of the electric bus.

[0052] 6, the upper fixing frame 134 is connected to the upper frame 132 via a hinge, and the upper fixing frame 134 and the upper frame 132 are connected via an upper fixing cylinder 135. The upper fixing cylinder 135 is a hydraulic cylinder, and the length of the cylinder is reduced by hydraulic pressure to pull the upper fixing frame 134 and lift it slightly upward, or the length of the cylinder is extended to push the upper fixing frame 134 down so that it fits tightly onto the top surface of the electric bus.

[0053] That is, the upper fixing frame 134 is positioned on the top of the electric bus while being slightly raised upward, and then the upper fixing frame 134 is lowered downward via the upper fixing cylinder 135 so that it is in close contact with the top of the electric bus. This allows the foldable frame 130 to be fixed so that it does not get pushed or moved during the process of pressing and drilling the battery arranged on the top of the electric bus or spraying high-pressure fire extinguishing water via a fire extinguishing water spray lance, which will be described later.

[0054] The upper fixed cylinder 135 is connected to a hydraulic pump 200 disposed on one side of the transport vehicle through a hydraulic supply line, and can be controlled hydraulically.

[0055] The hydraulic pump 200 is connected to the upper fixed cylinder 135 via a high-pressure hydraulic supply line, and by adjusting the length of the cylinder rod of the upper fixed cylinder 135 via hydraulic pressure, the upper fixed frame 134 can be pulled up slightly or pushed down so that the bottom surface of the upper fixed frame 134 is in close contact with the top surface of the electric bus.

[0056] In addition, a fire-extinguishing water spray lance 150 (described later) may be installed upright facing downward at an end of the upper fixing frame 134. When the upper fixing frame 134 is in close contact with the top surface of the electric bus, the fire-extinguishing water spray lance 150 uses hydraulic pressure to pierce the battery disposed on the top of the electric bus, and then sprays high-pressure fire-extinguishing water into the battery to extinguish the fire.

[0057] In addition, the lower fixing frame 136 is connected to the lower side of the lower frame 131 via a hinge, and the lower fixing frame 136 and the lower frame 131 are connected via a lower fixing cylinder 137. The lower fixing cylinder 137 is a hydraulic cylinder, and the length of the cylinder is reduced by hydraulic pressure to pull the lower fixing frame 136 and lower its end portion downward, or the length of the cylinder is extended to push the lower fixing frame 136 and push its end portion upward, so that it can be in close contact with the underside of the electric bus.

[0058] That is, the lower fixing frame 136 is positioned on the underside of the electric bus in a state where it is slightly lowered downward, and then the lower fixing frame 136 is pushed up via the lower fixing cylinder 137 so as to be in close contact with the underside of the electric bus. In this way, the lance 150 for spraying fire extinguishing water, which will be described later, can press and puncture the battery arranged on the top of the electric bus or spray high-pressure fire extinguishing water, thereby fixing the foldable frame 130 so that it does not get pushed or move.

[0059] The lower fixed cylinder 137 is connected to a hydraulic pump 200 disposed on one side of the transport vehicle through a hydraulic supply line, and can be controlled via hydraulic pressure.

[0060] Also, in one embodiment, the upper fixed cylinder 135 and the lower fixed cylinder 137 can be controlled simultaneously. For example, when hydraulic pressure is applied from the hydraulic pump 200 through hydraulic supply lines connected to the upper fixed cylinder 135 and the lower fixed cylinder 137, the upper fixed frame 134 connected to the upper fixed cylinder 135 is lifted upward, and the lower fixed frame 136 connected to the lower fixed cylinder 137 is lowered downward, causing the upper fixed frame 134 and the lower fixed frame 136 to spread apart from each other.

[0061] In this state, if the folding frame 130 moves adjacent to the side of the electric bus where the fire has occurred and the hydraulic direction of the hydraulic pump 200 is switched to the opposite direction, the upper fixed frame 134 connected to the upper fixed cylinder 135 will move down toward the top of the electric bus and press tightly against it, and the lower fixed frame 136 connected to the lower fixed cylinder 137 will move up toward the bottom of the electric bus and press tightly against it.

[0062] That is, the upper fixing frame 134 and the lower fixing frame 136 are spread apart and narrowed together, and as a result, the folding frame 130 can be fastened to the electric bus by clamping the upper and lower parts of the electric bus.

[0063] In addition, a drilling cylinder 138 may be disposed at an end of the upper fixing frame 134. The drilling cylinder 138 is used to push a fire extinguishing water injection lance 150 (described later) toward the battery located at the top of the electric bus to drill a hole in the battery. This will be described next.

[0064] FIG. 7 is a view showing a state in which the fire-extinguishing water injection lance 150 is inserted into the battery by the drilling cylinder 138 to drill a hole in the battery.

[0065] Referring to FIG. 7, when the upper fixing frame 134 is fully attached to the upper surface of the electric bus via the upper fixing cylinder 135, the lower end of the fire extinguishing water spray lance 150, which is arranged upright at the end of the upper fixing frame 134, is attached to the upper surface of the electric bus.

[0066] In this state, the extinguishing water spray lance 150 is lowered downward via the drilling cylinder 138, and the extinguishing water spray lance 150 is pushed downward by hydraulic pressure to drill a hole in the battery. The drilling cylinder 138 is connected to a hydraulic pump 200 disposed on one side of the transport vehicle via a hydraulic supply line and can be controlled via hydraulic pressure.

[0067] At this time, the hydraulic pressure applied to the drilling cylinder 138 from the hydraulic pump 200 may correspond to a pressure sufficient to drill the battery located on the top surface and inside of the electric bus through the fire extinguishing water injection lance 150.

[0068] In this way, the battery at the top of the electric bus is drilled by the hydraulic pressure of the drilling cylinder 138, and then fire extinguishing water is sprayed into the battery through the underside of the fire extinguishing water spray lance 150, starting the fire extinguishing process.

[0069] In addition, in one embodiment, a locking round bar 131-1 may be arranged on one side of the lower frame 131, more specifically, above the position where the mounting base 140 described below is installed, to lock the locking ring 121-1 provided at the end of the cylinder rod 121 of the hydraulic cylinder 120.

[0070] The locking round bar 131-1 can be engaged with a locking ring 121-1 provided at the end of the cylinder rod 121 of the hydraulic cylinder 120, and through this engagement, it can become a point that is pulled during the process of loading onto a transport vehicle, and conversely, it can become a point that is pushed during the process of unloading from a transport vehicle.

[0071] The stand 140 is installed on one side of the lower frame 131 and can slide on the seating rod 112 when handling cargo while seated on the seating rod 112. This will be described in more detail below.

[0072] Figure 8 is a diagram showing the configuration of the mounting base 140 in more detail, Figure 9 is a diagram showing the process of the folding frame 130 being loaded from the transport vehicle by extending the cylinder rod 121, and Figure 9 is a diagram showing the process of the folding frame 130 being loaded onto the transport vehicle by retracting the cylinder rod 121.

[0073] Referring to FIG. 8, the mounting base 140 can be positioned below the locking round bar 131-1 of the lower frame 131.

[0074] One side of such a mounting base 140 can be seated on the seating round bar 112 of the rotation assist plate 110, and when the cylinder rod 121 is pulled out by hydraulic pressure as shown in Figure 9, the locking ring 121-1 provided at the end of the cylinder rod 121 presses the locking round bar 131-1, and the mounting base 140 is pushed toward the rear of the transport vehicle while seated on the seating round bar 112.

[0075] In addition, one side of the mounting base 140 is formed with a rotation locking step 141, which is engaged with the seating round bar 112 and rotates at an angle of 90 degrees when the mounting base 140 is seated on the seating round bar 112 and slides on the seating round bar 112.

[0076] The rotation locking step 141 has a structure in which it is locked to the seating round bar 112 when the base 140 is pushed to the maximum extent while seated on the seating round bar 112, and at this time, the load of the folding frame 130 causes the base 140 to naturally rotate at an angle of 90 degrees with the seating round bar 112 as the rotation side.

[0077] At this time, since the locking ring 121-1 provided at the end of the cylinder rod 121 is engaged with the locking round bar 131-1, the folding frame 130 does not rotate suddenly, but rather rotates gradually at an angle of 90 degrees as the lower side approaches the ground.

[0078] After the rotation is completed, the locking ring 121-1 is separated from the locking round bar 131-1, and the loading of the folding frame 130 is completed.

[0079] Conversely, when the folding frame 130 is loaded onto a transport vehicle, with the lower frame 131 positioned adjacent to the rear of the transport vehicle and the locking ring 121-1 engaged with the locking round bar 131-1, the cylinder rod 121 of the hydraulic cylinder 120 is retracted, causing the locking ring 121-1 to pull the locking round bar 131-1, and with the rotating locking step 141 engaged with the seating round bar 112, the base 140 again rotates upward at an angle of 90 degrees.

[0080] Furthermore, as the locking ring 121-1 continues to pull the locking round bar 131-1, the stand 140, seated on the seating round bar 112, slides inward of the loading box of the transport vehicle.

[0081] At this time, a rotation limiting round bar 142 may be disposed on one side of the mounting base 140 to be engaged with the engaging means 113 to limit rotation.

[0082] The rotation-limiting round bar 142 is naturally engaged with the engaging means 113 having an L-shaped cross section while the mounting base 140 slides while seated on the seating round bar 112 .

[0083] At this time, the locking ring 121-1 remains engaged with the locking round bar 131-1, so unless the locking ring 121-1 is separated from the locking round bar 131-1, the mounting base 140 will not separate from the rotation assist plate 110 or rotate, and will be firmly fixed.

[0084] The fire-extinguishing water spray lance 150 may be installed vertically at an end of the upper fixed frame 134 of the above-described foldable frame 130, and the above-described drilling cylinder 138 may be disposed on the upper side thereof. When the drilling cylinder 138 is actuated by hydraulic pressure applied from the hydraulic pump 200, the lance 150 descends downward to forcibly drill a hole in the battery located at the top of the electric bus and then spray fire-extinguishing water into the battery. This will be described below.

[0085] FIG. 10 is a diagram showing the fire-extinguishing water jet lance 150 in more detail.

[0086] Referring to FIG. 10, the fire extinguishing water spraying lance 150 may include a lance head 151 that drills an upper portion of the battery through hydraulic pressure and penetrates the interior, and a fire extinguishing water nozzle 152 that is formed on a side of the body of the fire extinguishing water spraying lance 150 and sprays fire extinguishing water outward.

[0087] More specifically, the lance head 151 has a sharply protruding lower end and may be made of a material (e.g., alloy) strong enough to easily pierce not only the upper outer wall of the electric bus but also the top of the battery using hydraulic pressure from the hydraulic pump 200. In addition, in one embodiment, the lance head 151 may be replaceably connected to the fire-extinguishing water spray lance 150, so that when a performance degradation occurs, such as when the end of the lance head 151 becomes dull or is partially damaged or crushed and is unable to properly pierce the top of the battery, the lance head 151 may be replaced with a new lance head 151 from the fire-extinguishing water spray lance 150.

[0088] In addition, an extinguishing water supply line may be connected to the side of the main body of the extinguishing water injection lance 150, and the extinguishing water supply line may be connected to the extinguishing water pump 300 connected to the extinguishing water tank. Therefore, the extinguishing water can be strongly injected through the extinguishing water nozzle 152 by the water pressure applied by the extinguishing water pump 300.

[0089] At this time, as shown in FIG. 10(b), the body of the fire extinguishing water jetting lance 150 may be formed in multiple stages, and a fire extinguishing water nozzle 152 may be disposed on the side of each stage.

[0090] In addition, an internal supply line may be formed inside the fire extinguishing water injection lance 150 to inject the fire extinguishing water supplied through the fire extinguishing water supply line.

[0091] In one embodiment, the drilling cylinder 138 and the fire extinguishing water injection lance 150 are configured to be able to change direction by releasing the bolts from the ends of the upper fixing frame 134. Therefore, if the electric bus battery to be drilled is located on the side instead of the top due to an overturn of the electric bus, the electric bus battery can be drilled from the side. This will be described next.

[0092] FIG. 11 is a diagram showing a state in which a fire-extinguishing water injection lance 150 is inserted from the side of an overturned electric bus toward the inside of the battery to perforate the battery.

[0093] 11, if an electric bus on fire overturns and the battery faces sideways instead of upwards, the direction of the drilling cylinder 138 and the fire-extinguishing water spray lance 150 can be switched 180 degrees by releasing the bolts at the end of the upper fixing frame 134, so that the fire-extinguishing water spray lance 150 faces the battery of the electric bus. In this state, the fire-extinguishing water spray lance 150 is pushed downward by the hydraulic pressure, penetrating the battery. With the battery located on the side of the electric bus penetrated by the hydraulic pressure, fire-extinguishing water is sprayed into the battery from the underside of the fire-extinguishing water spray lance 150, starting the fire extinguishing process.

[0094] Although the present invention has been described herein with reference to several embodiments, various modifications and changes can be made without departing from the scope of the present invention, which are understandable to those of ordinary skill in the art to which the present invention pertains, and these modifications and changes should also be understood to fall within the scope of the claims appended hereto. [Explanation of symbols]

[0095] 100 Electric Bus Fire Suppression System 110 Rotation support plate 111 Base Plate 112 Seat round bar 113 Engagement means 120 Hydraulic Cylinder 121 Cylinder rod 121-1 Locking ring 130 Folding Frame 131 Lower frame 131-1 Locking round bar 132 Upper Frame 133 Folding Cylinder 134 Upper fixed frame 135 Upper fixed cylinder 136 Lower fixed frame 137 Lower fixed cylinder 138 Perforated Cylinder 140 Stationary stand 141 Locking step for rotation 142 Rotation limiting round bar 150 Fire extinguishing water spray lance 151 Lancehead 152 Fire extinguishing water nozzle 200 Hydraulic Pump 300 Fire Water Pump

Claims

1. A rotation assist plate (110) installed at the rear of the loading box of the transport vehicle; a hydraulic cylinder (120) disposed in the loading box of the transport vehicle; a folding frame (130) that is unfolded and folded via hydraulic pressure; a base (140) disposed on one side of the folding frame (130), one side of which is configured to be engaged with an end of a cylinder rod (121) drawn out from the hydraulic cylinder (120); a fire extinguishing water injection lance (150) disposed on the foldable frame (130) for piercing a battery disposed on top of the electric bus and then injecting fire extinguishing water supplied from a fire extinguishing water tank mounted on the transport vehicle into the battery; The mounting base (140) is engaged with the end of the cylinder rod (121) and is seated on the rotation assist plate (110), maintaining the state of being loaded on the transport vehicle; When the cylinder rod (121) is pulled out, the base (140) moves toward the ground through a sliding action while in close contact with the rotation assist plate (110), and the base (140) and the rotation assist plate (110) are separated from each other by disengaging from the end of the cylinder rod (121), completing the loading and unloading process. This is an electric bus fire suppression device that can be loaded and unloaded via a hydraulic cylinder.

2. The rotation assist plate (110) is a base plate (111) disposed at the rear of the bottom surface of the loading box; A seating rod (112) arranged on the upper side of the base plate (111) and on which the mounting base (140) is seated; 2. The fire suppression device for electric buses capable of being loaded and unloaded via a hydraulic cylinder according to claim 1, further comprising: a seating rod (112) spaced a predetermined distance above the base plate (111); and an engaging means (113) for engaging one side of the mounting base (140) when the mounting base (140) is seated on the seating rod (112).

3. The folding frame (130) A lower frame (131); an upper frame (132) whose one side is rotatably connected to the lower frame (131) by a hinge; a folding cylinder (133) connected between the lower frame (131) and the upper frame (132) and controlling the rotation of the upper frame (132) through hydraulic pressure; an upper fixed frame (134) whose one side is rotatably connected to the upper frame (132) by a hinge and which is in close contact with the upper surface of the electric bus; an upper fixed cylinder (135) connected between the upper frame (132) and the upper fixed frame (134) and controlling the rotation of the upper fixed frame (134) through hydraulic pressure; a lower fixed frame (136) whose one side is rotatably connected to the lower frame (131) by a hinge and which is in close contact with the underside of the electric bus; a lower fixed cylinder (137) connected between the lower frame (131) and the lower fixed frame (136) and controlling the rotation of the lower fixed frame (136) through hydraulic pressure; and a drilling cylinder (138) disposed at an end of the upper fixed frame (134) and pushing the fire extinguishing water injection lance (150) located at the top of the electric bus toward the battery.

4. The folding cylinder (133), the upper fixed cylinder (135), the lower fixed cylinder (137), and the perforated cylinder (138) are 4. The fire suppression device for electric buses capable of loading and unloading via a hydraulic cylinder according to claim 3, wherein the device is connected to a hydraulic pump (200) disposed on one side of the transport vehicle via a hydraulic supply line and is hydraulically controlled.

5. The base (140) is 4. The fire suppression device for electric buses capable of being loaded and unloaded via a hydraulic cylinder according to claim 3, wherein the fire suppression device is disposed on one side of the lower frame (131), has a certain length, and slides on the seating rod (112) while seated on the seating rod (112).

6. The base (140) is a rotation locking step (141) for locking one side of the container to the seating round bar (112) and rotating at an angle of 90 degrees while the container is seated on the seating round bar (112) and sliding on the seating round bar (112) during loading and unloading; 6. The fire suppression device for an electric bus capable of being loaded and unloaded via a hydraulic cylinder according to claim 5, further comprising: a rotation limiting round rod (142) that is engaged with the engaging means (113) to limit rotation during loading.

7. The fire extinguishing water injection lance (150) 2. The fire suppression device for electric buses capable of being loaded and unloaded via a hydraulic cylinder according to claim 1, wherein the fire suppression device is connected to a fire extinguishing water pump (300) disposed on one side of the fire extinguishing water tank via a fire extinguishing water supply line to receive the supply of fire extinguishing water.

8. The fire extinguishing water injection lance (150) a lance head (151) for drilling the upper part of the battery through hydraulic pressure; a fire extinguishing water nozzle (152) formed on a side surface of the body of the fire extinguishing water injection lance (150) for injecting the fire extinguishing water outward; 8. The fire suppression device for an electric bus capable of being loaded and unloaded via a hydraulic cylinder according to claim 7, wherein the lance head (151) is detachably connected to the main body of the fire-extinguishing water spray lance (150).

9. 9. The fire suppression device for electric buses capable of being loaded and unloaded via a hydraulic cylinder according to claim 8, wherein the body of the fire extinguishing water spray lance (150) is formed in multiple stages, and the fire extinguishing water nozzles (152) are respectively arranged in each stage.

10. The drilling cylinder (138) and the fire extinguishing water injection lance (150) are 4. The electric bus fire suppression device capable of loading and unloading via hydraulic cylinder according to claim 3, wherein the direction can be changed by releasing bolts from the end of the upper fixed frame (134).

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