Water drill lance for container fire suppression

Abstract

The present invention relates to a water drill lance for container fire extinguishing, which can automatically drill a fire hole in the container door using water pressure when a fire breaks out inside the container, then spray water to extinguish the fire, and which can be adjusted in height to quickly extinguish the fire regardless of the height of containers stacked in multiple layers.

Description

[Technical Field]

[0001] The present invention relates to a water drill lance for extinguishing a container fire, and more specifically, to a water drill lance for extinguishing a container fire that can automatically drill a fire hole in a container door using water pressure when a fire breaks out inside the container, and then spray water to extinguish the fire, and that can quickly extinguish the fire regardless of the height of containers stacked in multiple layers by adjusting the vertical height. [Background technology]

[0002] Recently, container carriers have become super-large for marine logistics transportation, and because the cargo loaded onto container ships is sealed and kept secret inside the container, fires have broken out in the container itself during marine transportation, regardless of the hull, due to impact, friction, static electricity, spontaneous combustion, incombustibility of internal materials, and exothermic reactions of water-resistant materials with rainwater, humidity, and other moisture.

[0003] Fires inside containers release different amounts of heat and smoke depending on the HRR (Heat Release Rate) of the material, and due to the structural characteristics of the inside of a container, it is not possible to detect the fire, and crew members, fireboats, and firefighting aircraft cannot inject foam, seawater, or powder chemicals into the container to extinguish the fire. Therefore, once a fire breaks out, it becomes prolonged, and in the case of fires involving chemicals or products with high heat output, the heat released during the fire is transmitted to adjacent containers through conduction, convection, and radiation, acting as a chain reaction to exacerbate the damage.

[0004] In the past, to extinguish such fires, workers would directly drill holes in the container door using a hammer and then inject a water injection lance into the drilled hole to extinguish the fire. However, this process not only takes a lot of time and labor to drill holes in an iron container door, but also requires workers to perform the work manually next to the container, which would emit a great deal of heat and smoke in the event of a fire, which poses a risk of fire and explosion.

[0005] Furthermore, if a fire breaks out in a container that is stacked high up, workers must first set up a ladder at the height of the container and then climb up onto the ladder to drill holes in the container door, which exposes the workers to many risks.

[0006] In particular, even if a worker directly drills a hole using a hammer, it is extremely difficult and dangerous for the worker to directly inject water with a water injection lance in a situation where a huge amount of hot air is blowing out through the drilled hole. Therefore, there was a need for technology that would allow a worker to safely extinguish a fire without having to directly perform such fire suppression. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a water drill lance for container fire extinguishing, which can drill a fire hole in the container door using water pressure when a fire breaks out inside the container, and then spray water to extinguish the fire, and which can be adjusted in height to quickly extinguish the fire regardless of the height of containers stacked in multiple layers. [Means for solving the problem]

[0008] A water drill lance for extinguishing a container fire according to one embodiment of the present invention may include a clamp body 110 that is fitted tightly to a container door, a locking hook assembly 120 that is attached to the clamp body 110 and rotates to be fixed or unlocked to a locking rod of the container, a drill module 130 that is attached to the clamp body 110 and drills holes in the container door using water injected from the outside and sprays water into the container through the drilled holes, and a lance support 140 that is connected to the clamp body 110 and is adapted to be connected to an external lifting pole whose height is adjustable.

[0009] In one embodiment, the clamp body 110 may have an accommodating groove 111 formed therein for accommodating the locking rod in the longitudinal direction.

[0010] In one embodiment, the lock hook assembly 120 includes a rotation guide 121 provided on the inner surface of the clamp body 110, a lock hook 122 connected to the rotation guide 121 by an axis and adapted to rotate to engage or disengage with a locking rod, a shaft 123 connected to the lock hook 122 and pushing or pulling the lock hook 122, and a trigger 124 having one end connected to the shaft 123 and a center connected to the clamp body 110 by an axis and adapted to push or pull the shaft 123 depending on the rotation direction of the other end. As the trigger 124 rotates from up to down, the shaft 123 pushes the lock hook 122, and the lock hook 122 may rotate about the rotation guide 121 to engage with the locking rod.

[0011] In one embodiment, a wire may be connected to the other end of the trigger 124 to pull the trigger 124 downward.

[0012] In one embodiment, a locking means 141 is protruded from one side of the lance support 140 so as to be positioned below the trigger 124. The lance support 140 is connected to the clamp body 110 and rotates at a certain angle from the clamp body 110. When the lance support 140 rotates, the locking means 141 pushes the other end of the trigger 124 from below to above, causing the shaft 123 to pull the locking hook 122. The locking hook 122 may rotate around the rotation guide 121 as an axis and disengage from the locking rod.

[0013] In one embodiment, the drill module 130 may include a housing 131 into which water is injected, an impeller 132 disposed within the housing 131 and rotated by the injected water to generate rotational force, a center drill 133 connected to the impeller 132 and drilling a center hole in the container door using the rotational force of the impeller 132 while in close contact with the container door, a hole cutter 134 connected to the impeller 132 and drilling a fire hole through which water is injected into the container using the rotational force of the impeller 132, a bearing cover 135 covering a bearing disposed between the housing 131 and the impeller 132, and a drill guide shaft 136 connected to the center drill 133.

[0014] In one embodiment, a pair of slide guides 112 are formed on the outside of the clamp body 110 to protrude toward the housing 131, and a pair of slide wings 131a are formed on the outside of the housing 131 to be coupled to the pair of slide guides 112. With the pair of slide wings 131a coupled to the pair of slide guides 112, the drill module 130 may slide along the pair of slide guides 112 to move away from or towards the clamp body 110.

[0015] In one embodiment, the pair of slide guides 112 may be provided at their ends with guide channels 112 a that prevent the housing 131 from being separated from the pair of slide guides 112 .

[0016] In one embodiment, an elastic body may be provided between the guide channel 112a and the pair of slide wings 131a, and the elastic force of the elastic body may maintain the housing 131 in close contact with the clamp body 110.

[0017] In one embodiment, when the clamp body 110 is in close contact with the container door, the center drill 133 abuts against the container door, causing the housing 131 to move away from the clamp body 110, and during the process of drilling the container door with the center drill 133 and the hole cutter 134, the distance by which the housing 131 is separated from the clamp body 110 may gradually decrease due to the elastic force of the elastic body, causing the housing 131 to come into close contact with the clamp body 110.

[0018] In one embodiment, a drain hole 131b may be provided on the lower side of the housing 131 to allow water injected inside to be discharged to the outside when the impeller 132 rotates.

[0019] In one embodiment, a drain plate 113 may be provided on the outside of the clamp body 110 to block the drain hole 131b and guide water injected into the housing 131 to be injected into the container through the fire hole instead of being discharged through the drain hole 131b when the distance between the housing 131 and the clamp body 110 gradually decreases and the housing 131 comes into close contact with the clamp body 110 due to the elastic force of the elastic body during the process of drilling the container door with the center drill 133 and the hole cutter 134. [Effects of the Invention]

[0020] The present invention has the advantage that a fire hole can be automatically drilled in the container door using water pressure, and then water can be sprayed to extinguish the fire, without the need for an operator to directly drill a hole in the container door using a hammer.

[0021] Furthermore, the present invention has the advantage that by adjusting the vertical height, a fire can be quickly extinguished regardless of the height of containers stacked in multiple layers.

[0022] In particular, the present invention has the advantage that a fire can be extinguished safely without workers having to directly perform tasks such as drilling holes in the container door or spraying water to extinguish the fire. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a diagram showing the structure of a water drill lance 100 for container fire suppression according to one embodiment of the present invention. [Figure 2] 10 is a diagram showing the clamp body 110 in more detail. FIG. [Figure 3] 10A-10C illustrate the process of locking hook assembly 120 being locked or unlocked relative to the locking rod. [Figure 4] FIG. 12 is a diagram showing the drill module 130 in more detail. [Figure 5] 10A and 10B are diagrams showing a process in which holes are drilled in a container door via a drill module 130. [Figure 6] 1A and 1B are diagrams showing the structure of a lifting pole device 200 for adjusting the height of a water drill lance. [Figure 7] 10 is a diagram showing the lifting pole 210 and the locking bar 211 in more detail. [Figure 8] FIG. 10 is a diagram showing a state in which the lock bar 211 is fixed to the handrail. [Figure 9] 10A and 10B are diagrams illustrating a process of adjusting the height of the lifting pole 210 using the lifting handle 230. [Figure 10] 1A to 1C are diagrams sequentially showing the entire process of extinguishing a container fire using a water drill lance for extinguishing a container fire. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily understand and practice the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0025] For clarity of description, parts that are not relevant to the description will be omitted, and the same reference numerals will be used throughout the specification to refer to the same or similar components.

[0026] In some embodiments, components having the same configuration will be described using the same reference numerals only in the representative embodiment, and in other embodiments, only configurations different from the representative embodiment will be described.

[0027] Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" via another member. Furthermore, when a part is said to "comprise" a certain component, this does not mean excluding other components, but may also mean including other components, unless otherwise specified.

[0028] FIG. 1 is a diagram showing the structure of a water drill lance 100 for suppressing a container fire according to one embodiment of the present invention.

[0029] Referring to FIG. 1, a water drill lance 100 for container fire suppression according to one embodiment of the present invention may include a clamp body 110 that is fitted tightly to a container door, a locking hook assembly 120 that is provided on the clamp body 110 and fixed to a locking rod, a drill module 130 that drills a hole in the container door and sprays water inside, and a lance support 140 that is provided on the clamp body 110 and connected to an external lifting pole that is height-adjustable.

[0030] First, the clamp body 110 is closely installed on the container door and serves as a support for stably installing the drill module 130 (described later) on the container door.

[0031] FIG. 2 shows the clamp body 110 in more detail.

[0032] 2, a number of receiving grooves 111 for receiving the locking rods of the container in the longitudinal direction are formed on the upper and lower sides of the clamp body 110. The receiving grooves 111 are formed according to the number and positions of the locking rods of the container, and are formed in a shape corresponding to the shape around the locking rods so that the locking rods are in complete contact with each other without any separation.

[0033] An open area is formed in the center of the clamp body 110 so that the center drill 133 and hole cutter 134 of the drill module 130 (described later) can enter inward. The clamp body 110 is in close contact with the container door, allowing the center drill 133 and hole cutter 134 to stably drill holes in the container door.

[0034] Meanwhile, a lock hook assembly 120 is provided inside the clamp body 110 to ensure that the clamp body 110, which is in close contact with the container door, is firmly fixed without separation.

[0035] The lock hook assembly 120 is provided inside the clamp body 110 and serves to either engage with the locking rod of the container through rotation to firmly fix the clamp body 110 so that it does not move, or to release the engagement to separate the clamp body 110 from the locking rod.

[0036] Such a lock hook assembly 120 is composed of a pivot guide 121, a lock hook 122, a shaft 123, and a trigger .

[0037] The rotation guide 121 is located in an open area formed in the clamp body 110 and can serve as an axis for rotating the lock hook 122 around the rotation guide 121 as an axis.

[0038] The lock hook 122 is formed in a hook shape and can rotate in one direction to engage with the locking rod or rotate in the opposite direction to separate from the locking rod. When one side of the lock hook 122 is pushed by the shaft 123, it rotates around the rotation guide 121 in a direction toward the locking rod. Conversely, when the shaft 123 is pulled, the lock hook 122 rotates in the opposite direction, around the rotation guide 121 in a direction away from the locking rod.

[0039] One side of the shaft 123 is connected to the lock hook 122, and the other side is connected to the trigger 124. The shaft 123 can move linearly in a direction to push the lock hook 122 or in a direction to pull the lock hook 122, depending on the rotation direction of the trigger 124.

[0040] The trigger 124 is a type of switch for rotating the locking hook 122, and one end of the trigger 124 is connected to the shaft 123. When the end of the trigger 124 is positioned upward, the shaft 123 is pulled, and in this case, the locking hook 122 is also rotated in a direction away from the locking rod. This corresponds to the case where the clamp body 110 is installed on the container door.

[0041] Conversely, when the end of the trigger 124 is pulled downward, the shaft 123 is pressed, and in this case, the lock hook 122 is rotated toward the locking rod around the rotation guide 121. As a result, the lock hook 122 engages with the locking rod, thereby firmly fixing the clamp body 110 to the container door. At this time, a wire that allows an operator to pull the trigger 124 downward may be connected to the end of the trigger 124.

[0042] Next, such a process will be described.

[0043] FIG. 3 illustrates the process by which the locking hook assembly 120 is locked or unlocked relative to the locking rod.

[0044] 3, when the clamp body 110 is not installed on the container door, the trigger 124 is in the upper position and the shaft 123 pulls the locking hook 122, so that the locking rod engages with the receiving groove 111. In this state, as the worker pulls the wire, the trigger 124 moves downward, and as a result, the shaft 123 presses the locking hook 122, which rotates and engages with the locking rod.

[0045] If the trigger 124 needs to be moved upward again, the locking means 141 located below the trigger 124 comes into contact with the trigger 124, causing the trigger 124 to move upward. The locking means 141 will be further described in the lance support 140 below.

[0046] The drill module 130 is installed outside the clamp body 110 in a direction facing the container door, and serves to drill holes in the container door using water injected from the outside, and to extinguish a fire inside the container by spraying water into the drilled holes. This will be described below.

[0047] FIG. 4 is a diagram showing the drill module 130 in more detail, and FIG. 5 is a diagram showing the process of drilling a hole in a container door through the drill module 130.

[0048] 4 and 5, the drill module 130 can be broadly configured to include a housing 131, an impeller 132, a center drill 133, a hole cutter 134, a bearing cover 135, and a drill guide shaft 136.

[0049] The housing 131 is provided outside the clamp body 110 and accommodates the impeller 132, the center drill 133, and the hole cutter 134 inside. A water inlet is provided on one side of the housing 131 for injecting water into the interior, and the impeller 132 inside rotates due to the water pressure of the water injected through the water inlet. The rotational force of the impeller 132 is directly transmitted to the center drill 133 and the hole cutter 134, and as a result, the center drill 133 and the hole cutter 134 drill a hole in the container door due to the water pressure.

[0050] Water injected through a water inlet provided in the housing 131 rotates along the inner wall of the housing 131, causing the impeller 132 to rotate.

[0051] The impeller 132 rotates due to water pressure to generate a rotational force, which rotates the center drill 133 and the hole cutter 134 .

[0052] The center drill 133 protrudes to be in close contact with the container door, and drills a center hole in the container door while rotating due to the rotational force of the impeller 132.

[0053] Once the center hole of a certain depth has been drilled by the center drill 133, the hole cutter 134 rotates again by the rotational force of the impeller 132 to drill a fire hole in the container door. Since the fire hole has a wider diameter than the center hole, a large amount of water can be injected into the container through the fire hole, thereby more effectively suppressing the fire.

[0054] Meanwhile, before the hole is drilled in the container door by the center drill 133 and the hole cutter 134, the water injected through the water inlet must be drained to the outside, and for this purpose, a drain hole 131b may be formed on the bottom of the housing 131.

[0055] In addition, the housing 131 gradually approaches the clamp body 110 from the outside thereof due to the elastic force of the elastic body, thereby allowing the center drill 133 and the hole cutter 134 to continuously drill holes in the container door. This will be described next.

[0056] A pair of slide guides 112 are formed on the outside of the clamp body 110 so as to protrude toward the housing 131, and a pair of slide wings 131a are formed on the outside of the housing 131 to be coupled with the pair of slide guides 112.

[0057] The housing 131 moves linearly along the slide guides 112 to move away from or towards the clamp body 110. In particular, guide channels 112a are provided at the ends of the pair of slide guides 112 to prevent the housing 131 from being separated from the slide guides 112. Therefore, even if the housing 131 moves away from the clamp body 110, it is caught in the guide channels 112a and is not separated outward.

[0058] In addition, an elastic body having elastic force is provided between the guide channel 112a and the pair of slide wings 131a. The elastic body uses its elastic force to push the pair of slide wings 131a, thereby keeping the housing 131 in close contact with the clamp body 110 at all times.

[0059] When the clamp body 110 is installed on the container door, the relatively protruding center drill 133 causes the housing 131 to move linearly along the slide guide 112 and move away from the clamp body 110. This is because the elastic body is in a compressed state, and an elastic force is generated in the elastic body.

[0060] In this state, the impeller 132 rotates due to water pressure, which in turn rotates the center drill 133 and the hole cutter 134, gradually drilling holes in the container door until the center drill 133 and the hole cutter 134 penetrate the container door. This is because the elastic body constantly presses the housing 131 toward the clamp body 110 through its elastic force.

[0061] Meanwhile, a drain hole 131b is formed on the lower side of the housing 131 to allow the injected water to be discharged to the outside until the hole is drilled by the center drill 133 and the hole cutter 134.

[0062] The drain hole 131b functions as a kind of water outlet that discharges water that has been injected before the hole is drilled by the center drill 133 and the hole cutter 134. After the hole is drilled by the center drill 133 and the hole cutter 134, the clamp body 110 is formed with a drain plate 113 that covers the drain hole 131b to prevent the water injected from the water inlet from being discharged to the outside through the drain hole 131b.

[0063] The drain plate 113 protrudes from the outside of the clamp body 110 toward the drain hole 131b and does not cover the drain hole 131b when the housing 131 is separated from the clamp body 110. However, when the housing 131 gradually approaches and tightly contacts the clamp body 110 due to the elastic force of the elastic body during the process of drilling the container door with the center drill 133 and the hole cutter 134, the drain plate 113 gradually closes the drain hole 131b, leading to water being injected into the container through the fire extinguishing hole rather than being discharged through the drain hole 131b.

[0064] That is, when the container door is drilled using the center drill 133 and the hole cutter 134 and the housing 131 gradually approaches the clamp body 110, the drain plate 113 naturally covers the drain hole 131b, so that the water injected into the housing 131 can naturally flow into the inside of the container through the fire extinguishing hole.

[0065] The lance support 140 is connected to one side of the clamp body 110 and is connected to an external lifting pole that is height adjustable, making it usable when the clamp body 110 needs to be installed on a container door that is located at a high position.

[0066] More specifically, the lance support 140 is not connected to the clamp body 110 by a connection structure that is completely fixed and immovable, but is connected by a connection structure that allows it to rotate partially at a certain angle at the connection part, so that when the worker pulls the lifting pole downward, it rotates downward at a certain angle with the connection part with the clamp body 110 as an axis.

[0067] A locking means 141 may be formed protruding from the lance support 140 so as to face the lower side of the trigger 124. After the fire is extinguished, the lifting handle of the lifting pole device may be rotated in the opposite direction to partially lower the lifting pole, thereby releasing the locked state of the gear. In this state, when the lifting handle is rotated to partially raise the lifting pole, the locking means 141 of the lance support 140 raises the trigger 123, thereby releasing the binding state of the lock hook 122, and the clamp body 110 may be easily separated from the container. The lifting pole connected to the lance support 140 can be used when installing the clamp body 110 on the door of a container located at a higher level among multiple stacked containers.

[0068] Next, the lifting pole connected to the lance support 140 will be described.

[0069] Figure 6 shows the structure of the lifting pole device 200 for adjusting the height of a water drill lance, Figure 7 shows the lifting pole 210 and locking bar 211 in more detail, and Figure 8 shows the locking bar 211 fixed to the handrail.

[0070] 6 to 8, the lifting pole device 200 for adjusting the height of a water drill lance can be broadly configured to include a multi-stage lifting pole 210 connected to the lance support of the water drill lance, a gear assembly 220, and a lifting handle 230.

[0071] First, the lifting pole 210 can be formed in multiple stages by applying a telescopic method, which allows height adjustment, so that the water drill lance 100 for container fire suppression can be installed regardless of the height even when containers are stacked in multiple layers.

[0072] The lifting poles 210 of each stage may be made of square tubes with different diameters, and have a shape in which the diameter gradually decreases from the lowest lifting pole 210 upward.

[0073] In particular, the uppermost lifting pole 210 is connected to a lance support 140, and the lowermost lifting pole 210 is provided with a lock bar 211 for fixing to a handrail installed in front of the container door.

[0074] The lock bar 211 is fixed to the lowest lifting pole 210 via a fixing bracket 211a, and is configured to be height adjustable along the lowest lifting pole 210, especially when the fixing bracket 211a is released.

[0075] 8, the locking bar 211 can be firmly fixed to the handrail by rotating the locking means downward when it is placed on a horizontal handrail installed in front of the container door. In particular, the locking means can always maintain a downward rotated state due to its own weight, so the locking bar 211 can remain firmly fixed to the handrail unless an operator directly rotates the locking means upward. This fixation of the locking bar 211 allows the lifting pole 210 to maintain a vertical position without falling over.

[0076] Meanwhile, a gear assembly 220 is provided on the upper side of the lifting pole 210 of each stage.

[0077] The gear assembly 220 is provided on the upper side of the lifting pole 110 of each stage and can mesh with the gear groove 210a formed on the side of the other lifting pole 210 (meaning a lifting pole with a smaller diameter) that is retracted inward via a gear.

[0078] In this case, the gear may be provided with a rotation stopper that can stop the rotation after rotating in one direction only, so that the lifting pole 210 that is pulled inward by the gear can be maintained in the pulled-out state.

[0079] At this time, a lifting handle 230 for rotating the inner gear is provided on one side of the gear assembly 220.

[0080] FIG. 9 is a diagram showing a process of adjusting the height of the lifting pole 210 using the lifting handle 230.

[0081] Referring to FIG. 9, the lifting handle 230 is basically formed so that it can be separated from the gear assembly 220. Therefore, a lifting handle 230 is not provided for every gear assembly 220. After the top lifting pole 210 is pulled out, the lifting handle 230 is separated from the gear assembly 220, and then another lifting handle 230 below is separated from the gear assembly 220. Then, the other lifting handle 230 is connected to the gear assembly 220 on another lifting pole 210 below (meaning a lifting pole with a larger diameter), and the lifting pole 210 is pulled out again. This process is repeated.

[0082] On the other hand, when it is necessary to retract the lifting poles 210 of each stage, the lifting handle 230 is connected to the lowest lifting pole 210 and rotated in the opposite direction, so that the lifting poles 2 inside the lowest lifting pole 210 are retracted. By repeating this process, all the lifting poles 210 return to their original state.

[0083] Next, the entire process of extinguishing a container fire using the above-mentioned water drill lance for extinguishing a container fire will be described in order.

[0084] FIG. 10 is a diagram sequentially showing the entire process of extinguishing a container fire using a water drill lance for extinguishing a container fire.

[0085] Referring to FIG. 10, first, the lifting pole 210 is positioned on the handrail installed in front of the container door, and the locking bar 211 is fixed to the handrail.

[0086] In this state, the lifting handle 230 is connected to the gear assembly 220 provided on the lowest lifting pole 210 and rotates, and the inner lifting pole 210 meshed with the gear in the gear assembly 220 is pulled out, increasing the height by one level. By repeating this process, the fire suppression water drill lance connected to the top lifting pole 210 can move up to the height of the container door where the fire has occurred.

[0087] When the container fire suppression water drill lance 100 is positioned in front of the container door where a fire has occurred, the clamp body 110 is in close contact with the container door, and in this state, the wire connected to the trigger 124 of the lock hook assembly 120 is pulled, causing the lock hook 122 to engage with the locking rod, thereby firmly fixing the clamp body 110.

[0088] In this state, water is supplied from the water inlet of the housing 131, causing the impeller 132 to rotate, and the center drill 133 connected to the impeller 132 rotates to drill a center hole in the container door. At this time, the elastic force of the elastic body allows the center drill 133 to closely contact the container door. After drilling the center hole, the hole cutter 134 closely contacts the container door and drills a fire hole again.

[0089] When the drilling of the fire extinguishing hole is completed, the drain hole 131b is blocked by the drain plate 113, and the water injected from the water inlet is injected and sprayed into the inside of the container through the fire extinguishing hole instead of the drain hole 131b, thereby starting to extinguish the fire inside the container.

[0090] After the fire has been extinguished, the lifting handle 230 is rotated to raise the lifting pole 210 two or three steps upward, whereby the locking means 141 provided on the lance support 140 pushes the trigger 124 upward, thereby disengaging the locking hook 122 from the locking rod and allowing the clamp body 110 to be easily separated from the container door.

[0091] After the clamp body 110 is separated, the lifting handle 230 is connected to the gear assembly 220 attached to the lowest lifting pole 210 and rotates, and the inner lifting pole 210 meshed with the gear in the gear assembly 220 is retracted, lowering the height by one level. This process is repeated to complete the release of the container fire extinguishing water drill lance 100.

[0092] Although the present invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and variations can be made thereto without departing from the spirit and scope of the present invention as set forth in the following claims. [Industrial Applicability]

[0093] According to the present invention, fires in containers loaded on ships or ports can be quickly and safely extinguished, and therefore the present invention is a technology that can be widely used in the shipbuilding, marine and firefighting industries to realize its practical and economic value. [Explanation of symbols]

[0094] 100 Water Drill Lance for Container Fire Suppression 110 Clamp body 111 Storage groove 112 Slide Guide 112a Guide trough 113 Drain plate 120 Lock Hook Assembly 121 Rotating guide 122 Lock Hook 123 Shaft 124 Trigger 130 Drill Module 131 Housing 131a Slide Wing 131b Drain Hole 132 Impeller 133 Center Drill 134 Hole Cutter 135 bearing cover 136 Drill guide shaft 140 Lance Support 141 Locking means 200 Water Drill Lance Height Adjustment Lifting Pole Device 210 Lifting Pole 210a gear groove 211 Rock Bar 211a Fixing bracket 220 Gear Assembly 230 Lifting Handle

Claims

1. a clamp body (110) that fits tightly against the container door; a locking hook assembly (120) provided on the clamp body (110) and adapted to be locked or unlocked with respect to a locking rod of a container via a rotation; a drill module (130) provided in the clamp body (110) for drilling holes in the container door through water injected from the outside and spraying water into the container through the drilled holes; and a lance support (140) connected to the clamp body (110) and adapted to be connected to an external lifting pole whose height is adjustable.

2. The clamp body (110) has:

2. The water drill lance for container fire suppression according to claim 1, characterized in that it is formed with an accommodation groove (111) for accommodating the locking rod in the longitudinal direction.

3. The locking hook assembly (120) A rotation guide (121) provided on the inner surface of the clamp body (110); a locking hook (122) connected to the pivot guide (121) by a shaft and adapted to be engaged with or disengaged from the locking rod through pivoting; a shaft (123) connected to the locking hook (122) for pushing and pulling the locking hook (122); a trigger (124) whose one end is connected to the shaft (123), whose center is connected to the clamp body (110) by an axis, and whose other end pushes or pulls the shaft (123) depending on the direction of rotation; 2. The water drill lance for container fire suppression according to claim 1, wherein as the trigger (124) rotates from up to down, the shaft (123) pushes the locking hook (122), and the locking hook (122) rotates about the rotation guide (121) as an axis to be engaged with a locking rod.

4. The other end of the trigger (124) has:

4. The water drill lance for container fire suppression according to claim 3, wherein a wire for pulling the trigger (124) downward is connected to the trigger (124).

5. On one side of the lance support (140), A protruding locking means (141) is provided so as to be positioned below the trigger (124), 5. The water drill lance for container fire suppression according to claim 4, wherein the lance support (140) rotates at a certain angle from the clamp body (110) while connected to the clamp body (110), and when the lance support (140) rotates, the locking means (141) pushes the other end portion of the trigger (124) from below to above, causing the shaft (123) to pull the locking hook (122), and the locking hook (122) rotates about the rotation guide (121) as an axis to be disengaged from the locking rod.

6. The drill module (130) comprises: a housing (131) into which water is injected; an impeller (132) provided in the housing (131) and rotated by injected water to generate rotational force; a center drill (133) connected to the impeller (132) and drilling a center hole in the container door by using the rotational force of the impeller (132) while being in close contact with the container door; a hole cutter (134) connected to the impeller (132) for drilling a fire extinguishing hole through which water is injected into the container by the rotational force of the impeller (132); a bearing cover (135) for covering a bearing provided between the housing (131) and the impeller (132); 2. The water drill lance for container fire suppression according to claim 1, further comprising: a drill guide shaft (136) connected to the center drill (133).

7. A pair of slide guides (112) are formed on the outside of the clamp body (110) to protrude toward the housing (131), A pair of slide wings (131a) are formed on the outer side of the housing (131) to be coupled with the pair of slide guides (112), 7. The water drill lance for container fire suppression according to claim 6, wherein the drill module (130) slides along the pair of slide guides (112) to move away from or towards the clamp body (110) while the pair of slide wings (131 a) are coupled to the pair of slide guides (112).

8. The pair of slide guides (112) have at their ends:

8. The water drill lance for container fire suppression according to claim 7, characterized in that it is provided with a guide channel (112a) for preventing the housing (131) from being separated from the pair of slide guides (112).

9. An elastic body is provided between the guide channel (112a) and the pair of slide wings (131a), 9. The water drill lance for container fire suppression according to claim 8, wherein the elastic force of the elastic body keeps the housing (131) in close contact with the clamp body (110).

10. When the clamp body (110) is in close contact with the container door, the center drill (133) abuts against the container door, and the housing (131) moves away from the clamp body (110); 10. The water drill lance for container fire suppression as set forth in claim 9, wherein, during the process of drilling a hole in the container door by the center drill (133) and the hole cutter (134), the distance at which the housing (131) is separated from the clamp body (110) gradually decreases due to the elastic force of the elastic body, so that the housing (131) comes into close contact with the clamp body (110).

11. The underside of the housing (131) is 11. The water drill lance for container fire suppression according to claim 10, further comprising a drain hole (131b) for discharging water injected into the lance to the outside when the impeller (132) rotates.

12. On the outside of the clamp body (110), 12. The water drill lance for container fire suppression as claimed in claim 11, further comprising a drain plate (113) that blocks the drain hole (131b) when the distance between the housing (131) and the clamp body (110) gradually decreases and the housing (131) comes into close contact with the clamp body (110) due to the elastic force of the elastic body during the process of drilling the container door with the center drill (133) and the hole cutter (134), thereby directing water injected into the housing (131) to be injected into the container through the fire hole instead of being discharged through the drain hole (131b).

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