Electric bus fire extinguishing device capable of being loaded and unloaded through hydraulic air cylinder

Abstract

The present invention relates to an electric bus fire extinguishing apparatus capable of loading and unloading by means of a hydraulic cylinder, comprising: a rotation assisting plate mounted to the tail of a cargo tank of a transport vehicle; a hydraulic cylinder disposed in a cargo tank of the transport vehicle; a folding frame which is unfolded or folded by hydraulic pressure; a rest stand disposed on one side of the foldable frame and configured so as to be engaged with an end portion of a cylinder rod led out from the hydraulic cylinder; and a spray gun for spraying fire extinguishing water, which sprays the fire extinguishing water into the battery after drilling the battery disposed in the upper part of the electric bus.

Description

TECHNICAL FIELD

[0001] The present application relates to an electric bus fire extinguishing device that can be loaded and unloaded by a hydraulic cylinder, and more particularly, to an electric bus fire extinguishing device that can be easily loaded and unloaded on a transport vehicle by a hydraulic cylinder, and can quickly extinguish a fire by drilling a battery disposed on an upper portion of an electric bus and injecting fire extinguishing water by hydraulic pressure in a state of being attached to the electric bus on fire. BACKGROUND

[0002] In recent years, the number of electric vehicles registered in Korea is increasing, and taxis or buses, which are major public transportation means, are gradually being converted into electric vehicles, and in the above-described case, there is an urgent need for a safety measure related to electric vehicle fires that can cope with problems such as frequent fires and difficulty in extinguishing fires due to the characteristics of electric vehicle batteries.

[0003] In particular, an electric bus has a battery storing high-capacity energy disposed on the upper portion of the bus, and in the case where the battery catches fire due to an accident or other various reasons, the temperature of the fire point is very high, and continuous heat transfer due to high-density integration and reignition occur, so it is difficult to extinguish the fire.

[0004] When the battery of an electric bus catches fire, it is difficult to extinguish the fire and reignition occurs easily before complete combustion, so a large amount of fire extinguishing water needs to be continuously injected for a long time to extinguish the fire.

[0005] As the most effective fire extinguishing method to solve the above-described problems, a method of lifting an electric vehicle on fire by a forklift and putting it into a water tank filled with water to extinguish the fire can be used, but it is difficult to apply the above-described method due to the weight and size of the electric bus. SUMMARY

[0006] The present application aims to solve the above-described problems and provides an electric bus fire extinguishing device that can be easily loaded and unloaded on a transport vehicle by a hydraulic cylinder, and can quickly extinguish a fire by drilling a battery disposed on an upper portion of an electric bus and injecting fire extinguishing water by hydraulic pressure in a state of being attached to the electric bus on fire.

[0007] The electric bus fire extinguishing device 100 that can be loaded and unloaded by a hydraulic cylinder according to one embodiment of the present application can include a rotation assisting plate 110 installed to the rear of the cargo box of a forklift truck, a hydraulic cylinder 120 disposed in the cargo box of the forklift truck, a folding frame 130 unfolded or folded by hydraulic pressure, a resting table 140 disposed to one side of the folding frame 130 and configured to be coupled to the end of a cylinder rod 121 drawn from the hydraulic cylinder 120, and a fire extinguishing water spraying lance 150 disposed to the folding frame 130 to spray fire extinguishing water supplied from a fire extinguishing water tank mounted to the forklift truck into a battery disposed to the upper portion of the electric bus after drilling the battery. The resting table 140 is disposed to the rotation assisting plate 110 in a state in which it is coupled to the end of the cylinder rod 121 and thereby maintained in a state in which it is loaded to the forklift truck, and when the cylinder rod 121 is drawn, the resting table 140 is moved to the ground by a sliding action in a state in which it is in close contact with the rotation assisting plate 110, and by uncoupling from the end of the cylinder rod 121, the resting table 140 and the rotation assisting plate 110 can be separated from each other and thereby unloading is completed.

[0008] The rotation assisting plate 110 according to one embodiment of the present application can include a bottom plate 111 disposed to the rear of the bottom surface of the cargo box, a resting bar 112 disposed to the upper side of the bottom plate 111 to allow the resting table 140 to be disposed, and a coupling assembly 113 disposed at a certain distance from the resting bar 112 on the upper side of the bottom plate 111 to allow one side of the resting table 140 to be coupled in a state in which the resting table 140 is disposed to the resting bar 112.

[0009] The folding frame 130 according to an embodiment of the present application can include a lower frame 131, an upper frame 132 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 to control rotation of the upper frame 132 by hydraulic pressure, an upper fixed frame 134 rotatably connected to the upper frame 132 by a hinge and attached to an upper surface of the electric bus, an upper fixed cylinder 135 connected between the upper frame 132 and the upper fixed frame 134 to control rotation of the upper fixed frame 134 by hydraulic pressure, a lower fixed frame 136 rotatably connected to the lower frame 131 by a hinge and attached to a lower surface of the electric bus, a lower fixed cylinder 137 connected between the lower frame 131 and the lower fixed frame 136 to control rotation of the lower fixed frame 136 by hydraulic pressure, and a boring cylinder 138 provided at an end of the upper fixed frame 134 to push the fire extinguishing water spraying lance 150 located at an upper portion of the electric bus in the direction of the battery.

[0010] The folding cylinder 133, the upper fixed cylinder 135, the lower fixed cylinder 137, and the boring cylinder 138 according to an embodiment of the present application can be connected to a hydraulic pump 200 provided at a side of the transport vehicle by a hydraulic supply line and controlled by hydraulic pressure.

[0011] The rest table 140 according to an embodiment of the present application can be provided at a side of the lower frame 131 and have a length to slide along the installation round bar 112 in a state of being seated on the installation round bar 112.

[0012] The rest table 140 according to an embodiment of the present application can include a rotation clamping cam 141 to be clamped to the installation round bar 112 by one side and rotated by 90 degrees during a process of sliding along the installation round bar 112 in a state of being seated on the installation round bar 112 when unloading is performed, and a rotation limiting round bar 142 to be clamped to the clamping assembly 113 to limit rotation when loading is performed.

[0013] The fire extinguishing water spraying lance 150 according to an embodiment of the present application can be connected to a fire extinguishing water pump 300 provided at a side of a fire extinguishing water tank by a fire extinguishing water supply line and receive supply of fire extinguishing water.

[0014] The fire extinguishing water injection lance 150 according to an embodiment of the present application can include a lance head 151 for drilling the upper portion of the battery by hydraulic pressure, and a fire extinguishing water nozzle 152 formed on the side of the body of the fire extinguishing water injection lance 150 for injecting the fire extinguishing water to the outside. The lance head 151 can be connected in a form replaceable from the body of the fire extinguishing water injection lance 150.

[0015] The body of the fire extinguishing water injection lance 150 according to an embodiment of the present application can be formed in a multi-stage form, and the fire extinguishing water nozzle 152 can be provided on each stage.

[0016] The drilling cylinder 138 and the fire extinguishing water injection lance 150 according to an embodiment of the present application can be configured in a form that can be converted in direction from the end of the upper portion fixing frame 134 by releasing the bolt.

[0017] According to the present application, the loading and unloading on the transport vehicle can be facilitated by the hydraulic cylinder.

[0018] Further, according to the present application, the direction of the drilling cylinder and the fire extinguishing water injection lance can be converted by releasing the bolt, so that the battery provided on the side of the overturned electric bus can be drilled and injected with the fire extinguishing water by hydraulic pressure, and the fire can be extinguished quickly.

[0019] Further, according to the present application, the battery provided on the upper portion of the electric bus can be drilled and injected with the fire extinguishing water by hydraulic pressure in a state of being attached to the electric bus in which the fire has occurred, and the fire can be extinguished quickly.

[0020] Further, according to the present application, the volume can be minimized by the folding structure when stored and transported, and the fire site can be transported simply and conveniently.

[0021] Further, according to the present application, the upper and lower portions of the electric bus can be firmly attached and fixed, so that the fire extinguishing water injection lance does not come off or separate during the process of drilling the battery by hydraulic pressure and injecting the high-pressure fire extinguishing water into the battery, and the fire can be extinguished stably. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the overall configuration of the electric bus fire extinguishing device 100 according to an embodiment of the present application, which can be loaded and unloaded by the hydraulic cylinder.

[0023] Figure 2 is a schematic view of the body of the electric bus fire extinguishing device 100 according to an embodiment of the present application, which can be loaded and unloaded by the hydraulic cylinder. Figure 1A schematic diagram illustrating a state in which the electric bus fire extinguishing device 100, which can be loaded and unloaded by a hydraulic cylinder, illustrated in the middle, is loaded to a carrying vehicle.

[0024] Figure 3 A schematic diagram illustrating a detailed configuration of the rotation assisting plate 110.

[0025] Figure 4 A schematic diagram illustrating a detailed configuration of the folding frame 130.

[0026] Figure 5 A schematic diagram illustrating a state in which the upper frame 132 is rotated from the lower frame 131 by means of the folding cylinder 133.

[0027] Figure 6 A schematic diagram illustrating a 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, respectively, by means of the upper fixed cylinder 135 and the lower fixed cylinder 137, respectively, and are attached to the upper and lower parts of the electric bus.

[0028] Figure 7 A schematic diagram illustrating a state in which the water jet lance 150 for fire extinguishing water jetting is inserted into the direction of the inside of the battery and drills the battery by means of the drilling cylinder 138.

[0029] Figure 8 A schematic diagram illustrating a detailed configuration of the resting table 140.

[0030] Figure 9 A schematic diagram illustrating a process in which the folding frame 130 is unloaded from the carrying vehicle by leading out the cylinder rod 121.

[0031] Figure 10 A schematic diagram illustrating a detailed configuration of the water jet lance 150 for fire extinguishing water jetting.

[0032] Figure 11 A schematic diagram illustrating a state in which the water jet lance 150 for fire extinguishing water jetting is inserted into the direction of the inside of the battery from the side of the overturned electric bus and drills the battery.

[0033]

SYMBOL EXPLANATION

[0034] 100: electric bus fire extinguishing device

[0035] 110: rotation assisting plate

[0036] 111: bottom plate

[0037] 112: seating round bar

[0038] 113: clamping coupling assembly

[0039] 120: hydraulic cylinder

[0040] 121: cylinder rod

[0041] 121-1: clamping ring

[0042] 130: folding frame

[0043] 131: lower frame

[0044] 131-1: clamping round bar

[0045] 132: upper frame

[0046] 133: folding cylinder

[0047] 134: upper fixed frame

[0048] 135: upper fixed cylinder

[0049] 136: lower fixed frame

[0050] 137: lower fixed cylinder

[0051] 138: drilling cylinder

[0052] 140: resting table

[0053] 141: rotating clamping cam

[0054] 142: rotating restriction round bar

[0055] 150: fire extinguishing water injection lance

[0056] 151: lance head

[0057] 152: fire extinguishing water nozzle

[0058] 200: hydraulic pump

[0059] 300: fire extinguishing water pump DETAILED DESCRIPTION

[0060] Next, specific contents for implementing the present application will be explained in detail with reference to the accompanying drawings. However, in the following explanation, specific explanation of well-known functions or configurations will be omitted in a case where it is possible to cause the gist of the present application to become unclear.

[0061] Figure 1 is a schematic view which outlines the overall configuration of an electric bus fire extinguishing device 100 which can be loaded and unloaded by a hydraulic cylinder according to one embodiment of the present application, and Figure 2 is a schematic view which outlines the overall configuration of an electric bus fire extinguishing device 100 which can be loaded and unloaded by a hydraulic cylinder according to one embodiment of the present application, and Figure 1A schematic diagram illustrating a state in which the electric bus fire extinguishing device 100, which can be loaded and unloaded by a hydraulic cylinder, illustrated in the middle, is loaded onto a carrying vehicle.

[0062] Referring to Figure 1 and Figure 2 The electric bus fire extinguishing device 100, which can be loaded and unloaded by a hydraulic cylinder, according to one embodiment of the present invention, can generally include a rotation assisting plate 110, a hydraulic cylinder 120, a folding frame 130, a resting table 140, and a fire extinguishing water spraying lance 150.

[0063] Here, a fire extinguishing water tank can be installed in a cargo box of a carrying vehicle (e.g., a truck, etc.).

[0064] The fire extinguishing water tank is a tank body in which fire extinguishing water for extinguishing a fire occurring on a battery of an electric bus is stored, and a storage capacity thereof is not particularly limited, and can be carried to a fire site together with the folding frame 130 by being loaded onto a carrying vehicle.

[0065] The fire extinguishing water tank as described above can arbitrarily change its size or volume according to a load capacity of a carrying vehicle, and as an example, a tank body of 1 ton capacity can be applied.

[0066] Further, in one embodiment, a fire extinguishing water pump 300 can be disposed at one side of the fire extinguishing water tank. The fire extinguishing water pump 300 supplies fire extinguishing water stored in the fire extinguishing water tank to the fire extinguishing water spraying lance 150, and can generate sufficient water pressure so as to strongly spray the fire extinguishing water into an inside of a battery located at an upper side of an electric bus.

[0067] Further, in one embodiment, the fire extinguishing water tank, the fire extinguishing water pump 300, and the fire extinguishing water spraying lance 150 can be connected to each other by a fire extinguishing water supply line. The fire extinguishing water supply line can be formed in a sufficient length (e.g., 10 m, etc.) so as to reach the fire extinguishing water spraying lance 150 from the fire extinguishing water tank.

[0068] Further, in one embodiment, the fire extinguishing water supply line can apply a heat dissipation material or be subjected to a heat dissipation coating process on an outer side thereof so as to prevent melting thereof due to high-temperature hot air generated in a battery located at an upper side of an electric bus.

[0069] Further, although not illustrated in the drawings, in one embodiment, the fire extinguishing water supply line can be carried in a state of being wound in a circular shape by a winch or the like so as to be automatically pulled out when the folding frame 130 to be described later is separated from a carrying vehicle and carried to an electric bus.

[0070] The rotation assisting plate 110 is installed at the rear of the cargo box of the transport vehicle, and functions to fix the folding frame 130 to prevent it from being separated during transport by the transport vehicle, and to guide the placement and rotation of the rest table 140. Next, this will be described.

[0071] Figure 3 is a view illustrating the configuration of the rotation assisting plate 110 in detail.

[0072] Referring to Figure 3 , the rotation assisting plate 110 can include a base plate 111 disposed at the rear of the bottom surface of the cargo box, a placement rod 112 disposed on the upper side of the base plate 111 to allow the rest table 140 to be placed thereon, and a clamping coupling member 113 disposed on the upper side of the base plate 111 at a distance from the placement rod 112 to clamp and couple one side of the rest table 140 in a state where the rest table 140 is placed on the placement rod 112.

[0073] The base plate 111 can be firmly installed at the rear of the bottom surface of the cargo box of the transport vehicle, and the placement rod 112 and the clamping coupling member 113 can be disposed at a distance on the upper side thereof.

[0074] At this time, the placement rod 112 can function as a placement space to allow the rest table 140 to be placed, as will be described later, and as a rotation shaft to rotate the rest table 140 by 90 degrees during unloading or loading.

[0075] The clamping coupling member 113 is formed in a "┓" shaped cross-section to clamp and couple one side of the rest table 140, as will be described later, and to prevent the rest table 140 from being separated from the rotation assisting plate 110 and to maintain a firm fixed state by being clamped and coupled by the clamping coupling member 113 in a state where the folding frame 130 is loaded onto the transport vehicle. Regarding this, this will be described later.

[0076] After the folding frame 130 is transported to the fire site in a state of being placed on the transport vehicle, it can be separated from the transport vehicle and attached to the electric bus, maintained in a folded state at ordinary times, and unfolded by hydraulic pressure. Next, this will be described in more detail.

[0077] Figure 4 is a view illustrating the configuration of the folding frame 130 in detail.

[0078] Referring to Figure 4 , the folding frame 130 can generally include a lower frame 131 placed on the ground and an upper frame 132 rotatably connected to the lower frame 131 by a hinge.

[0079] In detail, the lower frame 131 can function to support the folding frame 130 itself from falling by being seated to the ground, and a plurality of wheels can be provided at the lower side of the lower frame 131 to facilitate movement.

[0080] In addition, in an embodiment, a hinge for rotating the upper frame 132 is provided at the upper side of the lower frame 131, so that the upper frame 132 can be rotated from the lower frame 131 and stand upright in the upward direction by the corresponding hinge. This is to minimize the volume of the upper frame 132 by folding it when not in use or when the folding frame 130 is being transported, and to raise the upper frame 132 to the height of the electric bus by rotating it from the lower frame 131 during preparation for fire extinguishing.

[0081] The length of the upper frame 132 is less than or equal to the length of the lower frame 131 as described above, and is configured to be unfolded by being rotated in the upward direction from the lower frame 131 by a hinge or folded by being rotated in the downward direction.

[0082] The upper frame 132 as described above can be rotated from the lower frame 131 by the folding cylinder 133 by hydraulic pressure, which will be described later.

[0083] Figure 5 is a schematic view illustrating the state in which the upper frame 132 is rotated from the lower frame 131 by the folding cylinder 133.

[0084] Referring to Figure 5 , the lower frame 131 and the upper frame 132 are connected to each other by a hinge, and the lower cylinder 131 and the upper cylinder 132 are connected by the folding cylinder 133. As the folding cylinder 133, a hydraulic cylinder can be used, so that the cylinder length is shortened by hydraulic pressure and the upper frame 132 is pulled to stand upright, or the cylinder length is stretched and the upper frame 132 is pushed to fold in the downward direction. The folding cylinder 133 as described above can be connected to the hydraulic pump 200 provided at one side of the transport vehicle by a hydraulic pressure supply line and controlled by hydraulic pressure.

[0085] Here, the hydraulic pump 200 can be connected to the folding cylinder 133 by a high-pressure hydraulic pressure supply line, so that the cylinder rod length of the folding cylinder 133 is adjusted by hydraulic pressure and the upper frame 132 is pulled to stand upright, or the upper frame 132 is pushed to fold in the downward direction.

[0086] At the upper side of the upper frame 132, an upper fixed frame 134 is provided to be rotatable from the upper frame 132 by a hinge and to be attached to the upper surface of the electric bus.

[0087] The fixed frame 134 can be connected to the upper frame 132 by a hinge in a manner that has a certain length in the forward direction (toward the direction of the electric bus) with the upper frame 132 standing upright as a reference. The lower surface of the upper fixed frame 134 can be attached to the upper surface of the electric bus, and can be formed in a length sufficient to reach the center portion of the battery disposed on the upper portion of the electric bus.

[0088] In addition, the upper fixed frame 134 can be rotated up and down from the upper frame 132 by the upper fixed cylinder 135, which will be described later.

[0089] Figure 6 is a schematic diagram illustrating 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, respectively, by the upper fixed cylinder 135 and the lower fixed cylinder 137, and are attached to the upper portion and the lower portion of the electric bus, respectively.

[0090] Referring to Figure 6 The upper fixed frame 134 is connected to the upper frame 132 by a hinge, and the upper fixed frame 134 and the upper frame 132 are connected by the upper fixed cylinder 135. As the upper fixed cylinder 135, a hydraulic cylinder can be used, so that the length of the cylinder is shortened by hydraulic pressure, thereby pulling the upper fixed frame 134 to slightly lift it upward, or the length of the cylinder is stretched by hydraulic pressure, thereby pushing the upper fixed frame 134 to fold it downward and attach it to the upper surface of the electric bus.

[0091] That is, after the upper fixed frame 134 is disposed on the upper surface of the electric bus in a state in which the upper fixed frame 134 is slightly lifted upward, the upper fixed frame 134 is lowered downward by the upper fixed cylinder 135 and is attached to the upper surface of the electric bus, thereby playing a role of drilling the battery disposed on the upper portion of the electric bus by the fire extinguishing water injection lance 150 to be described later, or fixing the folding frame 130 to prevent it from sliding or moving during the injection of high-pressure fire extinguishing water.

[0092] The upper fixed cylinder 135 as described above can be connected to the hydraulic pump 200 disposed on one side of the carrier vehicle through a hydraulic supply line and be controlled by hydraulic pressure.

[0093] The hydraulic pump 200 is connected to the upper fixed cylinder 135 through a high-pressure hydraulic supply line and adjusts the length of the cylinder rod of the upper fixed cylinder 135 by hydraulic pressure, thereby pulling the upper fixed frame 134 to slightly lift it, or pushing the upper fixed frame 134 to lower it downward and thereby attaching the lower surface of the upper fixed frame 134 to the upper surface of the electric bus.

[0094] Furthermore, a fire extinguishing water spray gun 150, which will be described later, can be erected upright at the end of the upper fixing frame 134, facing downwards. The fire extinguishing water spray gun 150 can extinguish a fire by spraying high-pressure fire extinguishing water into the battery after drilling a hole in the battery disposed on the upper part of the electric bus using hydraulic pressure, with the upper fixing frame 134 already attached to the upper surface of the electric bus.

[0095] Furthermore, the lower fixing frame 136 is hinged to the lower side of the upper frame 131, and the lower fixing frame 136 and the lower frame 131 are connected by a lower fixing cylinder 137. The lower fixing cylinder 137 can be a hydraulic cylinder, which can shorten the cylinder length by hydraulically pulling the lower fixing frame 136 so that its end is lowered, or extend the cylinder length by extending the cylinder length and pushing the lower fixing frame 136 so that its end is raised and pressed against the lower surface of the electric bus.

[0096] That is, after the lower fixing frame 136 is positioned on the lower surface of the electric bus with the lower fixing frame 136 slightly lowered to the side, the lower fixing cylinder 137 raises the lower fixing frame 136 to the side and presses it against the lower surface of the electric bus. This allows the lower fixing frame 136 to be fixed and prevented from sliding or moving when drilling holes in the battery located on the upper part of the electric bus by the fire extinguishing water spray gun 150 as described later, or when high-pressure fire extinguishing water is sprayed.

[0097] The lower fixed cylinder 137, as described above, can be connected to a hydraulic pump 200 located on one side of the transport vehicle via a hydraulic supply line and controlled hydraulically.

[0098] Furthermore, in one embodiment, both the upper fixing cylinder 135 and the lower fixing cylinder 137 can be controlled simultaneously. For example, when hydraulic pressure is applied through hydraulic supply lines from the hydraulic pump 200 connected to the upper fixing cylinder 135 and the lower fixing cylinder 137 respectively, the upper fixing frame 134 connected to the upper fixing cylinder 135 will rise in the upward direction, while the lower fixing frame 136 connected to the lower fixing cylinder 137 will descend in the downward direction, thereby causing the upper fixing frame 134 and the lower fixing frame 136 to open up to each other.

[0099] In the state described above, when the folding frame 130 is moved to a position adjacent to the side of the electric bus where the fire occurred and the hydraulic direction of the hydraulic pump 200 is reversed, the upper fixing frame 134 connected to the upper fixing cylinder 135 will descend towards the upper surface of the electric bus and press against it, while the lower fixing frame 136 connected to the lower fixing frame 137 will rise towards the lower surface of the electric bus and press against it.

[0100] That is, when the upper fixed frame 134 and the lower fixed frame 136 are open to each other, they are converted into a narrowed state, which results in the upper and lower parts of the electric bus being clamped by the folding frame 130 and thus being firmly fixed to the electric bus.

[0101] Furthermore, a drilling cylinder 138 may be configured at the end of the upper fixing frame 134 as described above, for inserting the fire extinguishing water spray gun 150 (described later) into the battery direction located on the upper part of the electric bus and drilling a hole in the battery. This will be described next.

[0102] Figure 7 This is a schematic diagram illustrating the state in which the fire extinguishing water spray gun 150 is inserted into the battery by means of the drilling cylinder 138 and drills a hole in the battery.

[0103] See Figure 7 When the upper fixing frame 134 is attached to the upper surface of the electric bus via the upper fixing cylinder 135 as described above, the lower end of the fire extinguishing water spray gun 150, which is arranged in an upright position at the end of the upper fixing frame 134, will be attached to the upper surface of the electric bus.

[0104] In the state described above, the fire extinguishing water spray gun 150 can be lowered to the downward side by the drilling cylinder 138, thereby hydraulically moving the fire extinguishing water spray gun 150 in the downward direction to drill a hole in the battery. The drilling cylinder 138 described above can be connected to the hydraulic pump 200 configured on the side of the transport vehicle via a hydraulic supply line and controlled hydraulically.

[0105] At this time, the hydraulic pressure applied from the hydraulic pump 200 to the drilling cylinder 138 is equivalent to the pressure sufficient to drill holes in the battery located on the upper surface and inside of the electric bus using the fire extinguishing water spray gun 150.

[0106] With the drilling of the battery on the upper part of the electric bus completed by the hydraulic pressure of the drilling cylinder 138 as described above, fire extinguishing water will be sprayed into the battery through the lower side of the fire extinguishing water spray gun 150 and the fire extinguishing will begin.

[0107] Furthermore, in one embodiment, on one side of the lower frame 131, specifically above the position where the support platform 140 described later is installed, a snap-fit ​​round bar 131-1 may be provided for snapping with a snap-fit ​​ring 121-1 at the end of the cylinder rod 121 of the hydraulic cylinder 120.

[0108] The snap-fit ​​round bar 131-1 can be snapped into place by the snap-fit ​​ring 121-1 at the end of the cylinder rod 121 of the hydraulic cylinder 120. Through snap-fit, it can be used as a pulling force point during loading onto the transport vehicle, and conversely, as a pushing force point during unloading from the transport vehicle.

[0109] The support platform 140 is installed on one side of the lower frame 131 as described above, so that it can slide along the support bar 112 during unloading when it is placed on the support bar 112 as described above. A more detailed description will follow.

[0110] Figure 8 This is a schematic diagram illustrating the specific structure of the shelf 140. Figure 9 This is a schematic diagram illustrating the process of unloading the folding frame 130 from the transport vehicle via the extension of the cylinder rod 121. Figure 9 This is a schematic diagram illustrating the process of unloading the folding frame 130 from the transport vehicle by extending the cylinder rod 121.

[0111] See Figure 8 The shelf 140 can be located on the underside of the snap-fit ​​round bar 131-1 in the lower frame 131.

[0112] As described above, one side of the shelf 140 can be placed into the mounting rod 112 of the rotating auxiliary plate 110, and as... Figure 9 As shown, when the cylinder rod 121 is hydraulically extended, the snap ring 121-1 at the end of the cylinder rod 121 will push the snap ring 131-1, thereby pushing the platform 140 towards the rear of the transport vehicle while it is placed on the platform ring 112.

[0113] Furthermore, a rotating locking tab 141 is formed on one side of the shelf 140 for engaging with the shelf 112 on one side and rotating 90 degrees during the sliding movement along the shelf 112 while it is placed on the shelf 112.

[0114] The rotating locking 141 is designed to engage with the mounting rod 112 when the platform 140 is pushed out to its maximum extent while it is placed on the mounting rod 112. At this time, with the help of the load of the folding frame 130, the platform 140 will naturally rotate 90 degrees around the mounting rod 112 as the axis of rotation.

[0115] At this time, because the snap ring 121-1 equipped at the end of the cylinder rod 121 is snapped into the snap-fit ​​round bar 131-1, the folding frame 130 does not rotate sharply, but slowly rotates 90 degrees while bringing its lower side close to the ground.

[0116] After the rotation is completed, the snap ring 121-1 will separate from the snap ring bar 131-1, thereby completing the unloading of the folding frame 130.

[0117] Conversely, when the folding frame 130 is loaded onto the transport vehicle, with the lower frame 131 moved close to the rear of the transport vehicle and the snap ring 121-1 snapped into the snap bar 131-1, the hydraulic rod 121 of the hydraulic cylinder 120 is introduced, the snap ring 121-1 pulls the snap bar 131-1, and with the rotating snap stop 141 snapped into the placement bar 112, the platform 140 will rotate 90 degrees upwards again.

[0118] Furthermore, when the locking ring 121-1 continuously pulls the locking bar 131-1, the placement platform 140 will slide towards the inside of the cargo box of the transport vehicle while being placed on the placement bar 112.

[0119] At this time, a rotation limiting round bar 142 can be arranged on one side of the shelf 140 to limit rotation by engaging with the engagement assembly 113.

[0120] The rotation limiting round bar 142 can slide and move while the shelf 140 is placed on the placement round bar 112, and naturally engage with the engagement component 113 with a cross-section of "┓".

[0121] At this time, since the snap ring 121-1 remains snapped into the snap-fit ​​bar 131-1, the shelf 140 will be firmly fixed and will not separate from or rotate from the rotation auxiliary plate 110 as long as the snap ring 121-1 does not separate from the snap-fit ​​bar 131-1.

[0122] The fire extinguishing water spray gun 150 can be mounted vertically at the end of the upper fixed frame 134 within the folding frame 130 as described above. Furthermore, by configuring the drilling cylinder 138 as described above on the upper side, the drilling cylinder 138 can descend downwards when hydraulic pressure is applied from the hydraulic pump 200, forcibly drilling a hole in the battery located on the upper part of the electric bus before spraying fire extinguishing water inside. This will be described next.

[0123] Figure 10 This is a schematic diagram illustrating the specific details of the fire extinguishing water spray gun 150.

[0124] See Figure 10 The fire extinguishing water spray gun 150 may include: a spray gun head 151, which drills a hole in the upper part of the battery by hydraulic pressure and inserts it into the battery; and a fire extinguishing water nozzle 152, which is formed on the side of the body of the fire extinguishing water spray gun 150 and sprays fire extinguishing water outward.

[0125] Specifically, the nozzle 151 has a sharp, protruding lower end, and can be made of a material (such as an alloy) with sufficient strength to easily drill holes in the upper outer wall of the electric bus or even the upper part of the battery using hydraulic pressure from the hydraulic pump 200. Furthermore, in one embodiment, the nozzle 151 is connected in a way that allows it to be replaced from the fire extinguishing water spray nozzle 150. This allows for replacement with a new nozzle 151 when functional degradation occurs, such as the nozzle 151 becoming unable to effectively drill holes in the upper part of the battery due to end dulling, partial damage, or twisting.

[0126] Furthermore, the main body of the fire extinguishing water spray nozzle 150 can be connected to a fire extinguishing water supply line, and the fire extinguishing water supply line can be connected to a fire extinguishing water pump 300 connected to the fire extinguishing water tank as described above. In this way, fire extinguishing water can be forcefully sprayed through the fire extinguishing water nozzle 152 by the water pressure applied from the fire extinguishing water pump 300.

[0127] At this time, as Figure 10 As shown in (b), the main body of the fire extinguishing water spray gun 150 can be formed in multiple stages, and fire extinguishing water nozzles 152 can be respectively arranged on the side of each stage.

[0128] Furthermore, an internal supply pipeline can be formed inside the fire extinguishing water spray nozzle 150 for injecting fire extinguishing water supplied through the fire extinguishing water supply pipeline.

[0129] Furthermore, in one embodiment, the drilling cylinder 138 and the fire extinguishing water spray gun 150 are configured such that their directions can be changed from the end of the upper fixing frame 134 by releasing bolts. This allows drilling of the electric bus's battery from the side, even when the battery is located on the side rather than the top due to a rollover. This will be described next.

[0130] Figure 11 This is a schematic diagram illustrating the state in which a fire extinguishing water spray gun 150 is inserted into the battery from the side of the overturned electric bus and drills a hole in the battery.

[0131] See Figure 11 In the event that the battery is facing to the side instead of the top due to an electric bus overturning caused by a fire, the drilling cylinder 138 and the fire extinguishing water spray nozzle 150 can be redirected 180 degrees by loosening the bolts at the end of the upper fixing frame 134, thereby directing the fire extinguishing water spray nozzle 150 toward the electric bus's battery. In this state, the fire extinguishing water spray nozzle 150 will move downwards hydraulically to drill a hole in the battery. After drilling the battery located on the side of the electric bus using hydraulic pressure, fire extinguishing water will be sprayed into the interior through the lower side of the fire extinguishing water spray nozzle 150 to begin extinguishing the fire.

[0132] This specification describes some embodiments of the invention; however, those skilled in the art can make various modifications and alterations without departing from the scope of the invention. Furthermore, these modifications and alterations should be understood to be included within the scope of the appended claims.

Claims

1. An electric bus fire extinguishing device loadable and unloadable by a hydraulic cylinder, comprising: a rotation assisting plate (110) installed to a tail of a cargo box of a truck; a hydraulic cylinder (120) disposed into the cargo box of the truck; a folding frame (130) unfolded or folded by hydraulic pressure; a rest table (140) disposed to one side of the folding frame (130) and configured in a manner that one side is coupled to an end of a cylinder rod (121) drawn from the hydraulic cylinder (120); and a spray gun (150) for spraying fire extinguishing water disposed to the folding frame (130) and spraying fire extinguishing water supplied from a fire extinguishing water tank mounted on the truck into a battery disposed to an upper portion of an electric bus after drilling the battery, wherein the rest table (140) is disposed to the rotation assisting plate (110) in a state that the rest table (140) is coupled to the end of the cylinder rod (121) and thereby maintains a state of being loaded to the truck, and when the cylinder rod (121) is drawn, the rest table (140) moves to the ground by a sliding action in a state of being attached to the rotation assisting plate (110), and the rest table (140) and the rotation assisting plate (110) are separated from each other by uncoupling the rest table (140) from the end of the cylinder rod (121) and thereby unloading is completed.

2. The electric bus fire extinguishing device loadable and unloadable by a hydraulic cylinder according to claim 1, wherein the rotation assisting plate (110) comprises: a bottom plate (111) disposed to a bottom surface tail of the cargo box; a disposal round bar (112) disposed to an upper side of the bottom plate (111) and on which the rest table (140) is disposed; and a coupling assembly (113) disposed at a distance from the disposal round bar (112) on the upper side of the bottom plate (111) and for coupling one side of the rest table (140) in a state that the rest table (140) is disposed on the disposal round bar (112).

3. The electric bus fire extinguishing device loadable and unloadable by a hydraulic cylinder according to claim 2, wherein the folding frame (130) comprises: a lower frame (131); an upper frame (132) rotatably connected to the lower frame (131) by a hinge on one side; a folding cylinder (133) connected between the lower frame (131) and the upper frame (132) and controlling rotation of the upper frame (132) by hydraulic pressure; an upper fixed frame (134) rotatably connected to the upper frame (132) by a hinge on one side and attached to an upper surface of the electric bus; and an upper fixed cylinder (135) connected between the upper frame (132) and the upper fixed frame (134) and controlling rotation of the upper fixed frame (134) by hydraulic pressure. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A lower fixed frame (136) is rotatably connected to the lower frame (131) by a hinge on one side and is attached to the lower surface of the electric bus; A lower fixed cylinder (137) is connected between the lower frame (131) and the lower fixed frame (136) and controls the rotation of the lower fixed frame (136) by hydraulic pressure; and A drilling cylinder (138) is provided at the end of the upper fixed frame (134) and pushes the fire extinguishing water injection lance (150) located on the upper portion of the electric bus toward the battery direction.

4. The electric bus fire extinguishing device according to claim 3, which is loaded and unloaded by hydraulic cylinders, The folding cylinder (133), the upper fixed cylinder (135), the lower fixed cylinder (137), and the drilling cylinder (138), The folding cylinder (133), the upper fixed cylinder (135), the lower fixed cylinder (137), and the drilling cylinder (138) are connected to the hydraulic pump (200) provided on one side of the transport vehicle by a hydraulic supply line and are controlled by hydraulic pressure.

5. The electric bus fire extinguishing device according to claim 3, which is loaded and unloaded by hydraulic cylinders, The rest table (140), The rest table (140) is provided on one side of the lower frame (131) and has a certain length and slides along the installation round bar (112) in the state of being placed on the installation round bar (112).

6. The electric bus fire extinguishing device according to claim 5, which is loaded and unloaded by hydraulic cylinders, The rest table (140) includes: A rotation clamping cam (141) for clamping to the installation round bar (112) on one side and rotating by 90 degrees during the process of sliding along the installation round bar (112) in the state of being placed on the installation round bar (112) when unloading; and A rotation limiting round bar (142) for clamping and combining to the clamping and combining assembly (113) to limit rotation when loading.

7. The electric bus fire extinguishing device according to claim 1, which is loaded and unloaded by hydraulic cylinders, The fire extinguishing water injection lance (150), The fire extinguishing water injection lance (150) is connected to the fire extinguishing water pump (300) provided on one side of the fire extinguishing water tank by a fire extinguishing water supply line and receives the supply of fire extinguishing water.

8. The electric bus fire extinguishing device according to claim 7, which is loaded and unloaded by hydraulic cylinders, The fire extinguishing water injection lance (150) includes: A lance head (151) for drilling the upper portion of the battery by hydraulic pressure; And A fire extinguishing water nozzle (152) formed on the side of the body of the fire extinguishing water injection lance (150) and ejecting the fire extinguishing water outward; The lance head (151) is connected in a form that can be replaced from the body of the fire extinguishing water injection lance (150).

9. The electric bus fire extinguishing device according to claim 8, which is loaded and unloaded by hydraulic cylinders, The body of the fire extinguishing water injection lance (150) is formed in multiple stages, and the fire extinguishing water nozzle (152) is provided on each stage respectively.

10. The electrically operated bus fire extinguishing device of claim 3, which can be loaded and unloaded by a hydraulic cylinder, the drilling cylinder (138) and the fire extinguishing water injection lance (150), is configured in a manner that can be converted in direction from the upper fixed frame (134) end by releasing the bolt.

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