Movable new energy automobile chassis forcible entry fire extinguishing and cooling device

Abstract

The invention belongs to the technical field of fire extinguishing equipment, and particularly relates to a mobile new energy automobile chassis forcible entry fire extinguishing cooling device. Comprising an abrasive water jet supply device, a lifting device, a water spraying pipe and a movable chassis, the lifting device and the water spraying pipe are arranged on the movable chassis, and the water spraying pipe is laid around the lifting device; one end of the water spraying pipe is closed, and the other end serves as a water inlet and is butted with a fire pump; a plurality of sprayers are arranged on the water spraying pipe, and water outlets of the sprayers face the automobile chassis; a high-pressure abrasive water spray head is arranged on the lifting device, a nozzle is vertically upward, and the high-pressure abrasive water spray head is remotely connected with the abrasive water jet supply device through a pipeline. The device is simple in structure and convenient to operate, the generated high-pressure abrasive water jet can break down a battery protection plate and a shell structure at the bottom of the electric automobile, the effect that a fire extinguishing agent penetrates through the shell to directly reach a battery for precise cooling is achieved, and the problem that the fire extinguishing efficiency of a current electric automobile is low is effectively solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fire extinguishing equipment, and particularly relates to a mobile new energy vehicle chassis breaking and fire extinguishing cooling device. BACKGROUND

[0002] With the rapid growth of new energy vehicle production and sales, new energy vehicle fire safety accidents also occur from time to time; with the continuous increase of vehicle ownership and the continuous growth of battery service life, the aging of key components will inevitably lead to the rise of lithium battery system fire risk, and the fire situation of future new energy vehicles and other lithium battery related industries will be more complex, and the fire rescue situation faced by the fire rescue team will be more severe. An important problem in the current electric vehicle fire disposal is that the consumption of fire extinguishing agent is large, and the domestic relevant standard stipulates that more than 10t of fire water should be carried for the disposal of a vehicle fire. According to the relevant disposal cases at home and abroad, the consumption of fire water is generally more than 10t. The reason for the large amount of fire extinguishing agent is that the fire extinguishing agent cannot enter the internal battery of the electric vehicle for fire extinguishing, and cannot curb the progress of the internal battery thermal runaway, so continuous fire water cooling is needed.

[0003] Abrasive water jet technology is a new technology developed in the past two decades. Abrasive water jet can be used for breaking, breaking, cutting and sand blasting and rust removal in various industrial scenes, and has mature application in various industrial scenes. Its main principle is to mix solid particles into high-pressure water, so that the solid particles obtain a large kinetic energy, and when they hit the surface of the workpiece, the surface material will be stripped, so as to realize the punching, cutting or polishing of the workpiece. At present, there are mature products of portable abrasive water supply devices in China, such as Liaoning Wanlin Science and Technology Co., Ltd. and Binzhou Jason Mechanical Technology Co., Ltd. The portable abrasive water supply device is generally driven by a gasoline engine or an electric motor to drive a high-pressure plunger pump to generate high-pressure water (≥30MPa), which is mixed with abrasive through negative pressure suction to generate high-pressure abrasive water. There are precedents for using abrasive water jet for fire extinguishing in the fire protection industry. In 2007, Shanghai Fire Research Institute of the Emergency Management Department first published related research results, comparing two commonly used abrasive mixing methods, and considering that the premixing type abrasive water jet is more suitable for fire extinguishing equipment. Compared with the post-mixing type, the premixing type abrasive water jet equipment is more portable and requires less pressure. Subsequently, a handheld abrasive water jet fire extinguishing / breaking equipment was developed. After that, some researchers also developed fire extinguishing devices based on abrasive water jet. Yang Xiaofeng et al. proposed an abrasive water jet mixing method and fire extinguishing device, which installed the abrasive tank on the barrel, reducing the complexity of the rear-end supply device, but significantly increasing the weight of the handheld water gun, which is not suitable for long-time handheld fire extinguishing operation by firefighters, and the structure determines that the device cannot carry more abrasive, which significantly affects the cutting time.

[0004] Through the above analysis, the hard abrasive (generally garnet, corundum, etc.) contained in the abrasive water jet can effectively penetrate the electric vehicle shell and other battery shielding objects, effectively improve the penetration effect of the water jet, and help the water reach the battery surface to implement accurate battery cooling. At present, the existing abrasive water jet fire extinguishing device cannot completely adapt to the fire extinguishing working condition of the electric vehicle fire, so it is necessary to develop a fire extinguishing and rescue equipment specially used for electric vehicle fire based on the abrasive water jet technology, and effectively improve the emergency rescue ability of the firefighters in dealing with the electric vehicle fire. SUMMARY

[0005] The mobile new energy vehicle chassis breaking and fire extinguishing cooling device provided by the application has the advantages of simple operation, high fire extinguishing efficiency, and the like.

[0006] The mobile new energy vehicle chassis breaking and fire extinguishing cooling device provided by the application has the advantages of simple operation, high fire extinguishing efficiency, and the like. The lifting device is located at the center position of the mobile chassis, and the water spraying pipe is laid around the lifting device. One end of the water spraying pipe is closed, and the other end serves as a water inlet and is connected to a fire pump. The high-pressure abrasive water jet head is fixed on the top rail through a support.

[0007] In the application, the lifting device is a hand-operated cross arm lifting device, which comprises a bottom rail, an X-shaped lifting arm, a top rail, a hand-operated shaft and a hand-operated lever. One end of the bottom rail and the top rail is respectively provided with a fixed rotating shaft. The inner side of the bottom rail and the top rail is provided with a sliding groove along the length direction of the bottom rail and the top rail. The other end of the bottom rail and the top rail is respectively provided with a moving rotating shaft. With the lifting of the X-shaped lifting arm, the moving rotating shaft can move transversely in the sliding groove, so as to raise / lower the height of the top rail. The high-pressure abrasive water jet head is fixed on the top rail through a support. The hand crank shaft is a long threaded rod arranged between the fixed rotating shaft and the moving rotating shaft at the lower end of the X-shaped lifting arm; one end of the hand crank shaft passes through the pre-set through hole of the fixed rotating shaft and is connected with the hand crank lever; the other end of the hand crank shaft passes through the pre-set internal threaded hole of the moving rotating shaft and is threadedly engaged; rotating the hand crank lever can drive the hand crank shaft to rotate, and the clockwise / counterclockwise rotation of the hand crank shaft can drive the moving rotating shaft with the internal threaded hole to move back and forth on the external thread of the hand crank shaft. The hand crank lever is a long lever which can keep the operator and the fire source at a safe distance.

[0008] In the present application, the water spraying pipe is in a U shape and is arranged around the lifting device, and the spray head is arranged on the outer wall of the U-shaped water spraying pipe, and the water outlet of the spray head is at an oblique angle upward and outward of the U shape.

[0009] Further, the inner wall of the U-shaped water spraying pipe is also provided with a spray head, and the spray opening of the spray head is at an oblique angle upward and inward of the U shape.

[0010] Further, the water outlet of the spray head is at an oblique angle of 45°.

[0011] In the present application, the hand crank shaft is connected with the hand crank lever through a universal joint; the hand crank lever can be adjusted in angle position at will through the universal joint, and can drive the hand crank shaft to rotate through the universal joint, thereby improving the operation convenience.

[0012] When the present application is used, the mobile chassis is pushed under the automobile chassis through the hand crank long lever, the lifting device is lifted through the hand crank long lever, the high-pressure abrasive water spray head is close to the battery position of the chassis, the abrasive water is sprayed out from the high-pressure abrasive water spray head to penetrate the battery guard and the shell of the vehicle chassis, the position of the mobile chassis can be adjusted through the hand crank long lever, and the cutting of the guard and the shell is formed; at the same time, the fire water pump is started, and the fire water and the fire extinguishing agent are sprayed out from the spray heads through the water spraying pipe, can fully enter the battery pack through the cut opening, and can cool and extinguish the automobile chassis and the battery.

[0013] The present application has the advantages of simple structure, convenient operation, direct injection of fire extinguishing liquid / agent into the burning battery, greatly improved fire extinguishing and cooling effect, effectively delayed battery burning fire, and reduced risk of deflagration and explosion. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0015] Figure 2 It is a schematic diagram of the structure of the mobile chassis of the present application.

[0016] Figure 3 It is a schematic diagram of the structure of the lifting device of the embodiment of the present application.

[0017] The figure label: 1 is abrasive water jet supply device, 2 is lifting device, 3 is water pipe, 4 is moving chassis, 5 is high pressure abrasive water nozzle, 6 is bottom rail, 7 is X cross lifting arm, 8 is top rail, 9 is hand crank shaft, 10 is hand crank lever, 11 is sliding groove, 12 is fixed pivot, 13 is moving pivot, 14 is support, 15 is universal joint coupling, 16 is limit cover, 17 is fire pump, 18 is nozzle. DETAILED DESCRIPTION

[0018] In the present application, it includes abrasive water jet supply device 1, lifting device 2, water pipe 3, moving chassis 4 and high pressure abrasive water nozzle 5.

[0019] The moving chassis 1 is a rectangular metal plate, and the bottom is provided with four universal wheels.

[0020] The lifting device 2 can adopt the basic structural principle based on the existing hand-operated cross arm lifting on sale, including bottom rail 6, X cross lifting arm 7, top rail 8, hand crank shaft 9 and hand crank lever 10; the X cross lifting arm 7 is arranged between the bottom rail 6 and the top rail 8, and is a group, and there are two groups arranged in parallel; The bottom rail 6 and the top rail 8 are respectively provided with a fixed pivot 12 at one end, and the two groups of bottom rails 6 and top rails 8 are connected through the fixed pivot 12, and the upper and lower arm ends of the same side of the X cross lifting arm 7 are rotationally connected with the respective fixed pivots 12; The inner side of the bottom rail 6 and the top rail 8 is provided with a sliding groove 11 along the length direction of the bottom rail 6 and the top rail 8; The other end of the bottom rail 6 and the top rail 8 is respectively provided with a moving pivot 13, and the two moving pivots 13 are arranged in the respective corresponding sliding grooves 11 of the bottom rail / top rail and can slide back and forth in the sliding groove 11; the upper and lower arm ends of the other same side of the X cross lifting arm 7 are rotationally connected with the respective moving pivots 13; With the lifting of the X cross lifting arm 7, the moving pivot 13 can move back and forth in the sliding groove 11 transversely, so as to raise / lower the height of the top rail; The high pressure abrasive water nozzle 5 is fixedly arranged on the top rail through the support 14.

[0021] The hand crank shaft 9 is a long threaded rod, which is arranged between the fixed rotating shaft 12 and the moving rotating shaft 13 at the lower end of the X-shaped lifting arm 7. One end of the hand crank shaft 9 penetrates through a through hole pre-set on the fixed rotating shaft 12, is connected with the hand crank lever 10 through the universal joint coupling 15, and is limited in the through hole of the fixed rotating shaft 12 through a limiting structure, that is, the hand crank shaft 9 can only rotate in the through hole, but cannot move back and forth. The other end of the hand crank shaft 9 penetrates through an internal threaded hole pre-set on the moving rotating shaft 13. When the hand crank lever 10 is rotated, the hand crank shaft 9 is driven to rotate through the universal joint coupling 15, and the clockwise / counter-clockwise rotation of the hand crank shaft 9 can drive the moving rotating shaft 13 with the internal threaded hole to move back and forth on the external thread of the hand crank shaft 9. The limiting structure can limit the hand crank shaft 9 through a bearing structure. The outer ring of the bearing is welded with the through hole inner hole wall of the fixed rotating shaft 12, and the inner ring of the bearing is nested and welded on the hand crank shaft 9, so that the hand crank shaft 9 and the fixed rotating shaft 12 can only rotate relative to each other in the through hole and cannot move out of the through hole. Alternatively, the hand crank shaft 9 is penetrated through the through hole, and limiting washers are welded on the hand crank shaft 9 and adhere to the two sides of the fixed rotating shaft 12, so that the hand crank shaft 9 cannot move out of the through hole of the fixed rotating shaft 12. The limiting cover 16 is used for covering and protecting the structure and maintaining the aesthetic appearance.

[0022] The universal joint coupling 15 is a standard part, which is mainly used for connecting two shafts not in a straight line to realize torque transmission from one shaft to another shaft.

[0023] The hand crank lever 10 is a long lever, which can be composed of a plurality of short levers. A handle is connected to one end of the long lever, so that the operator and the fire source can be kept at a safe distance.

[0024] The specific structure of the lifting device 2 is shown in Figure 3

[0025] The water spraying pipe 3 is in a U shape, one end of the water spraying pipe 3 is closed, and the other end serves as a water inlet and is connected with a fire hose and a fire pump 17. A plurality of spray heads 18 are arranged on the water spraying pipe 3, and the spray heads 18 are arranged on the inner and outer walls of the U-shaped water spraying pipe 3. The water outlets of the spray heads 18 are inclined upward and face the inner and outer directions of the U-shaped water spraying pipe 3. The angle of the water outlets of the spray heads 18 is 45°.

[0026] The lifting device 2 and the water spraying pipe 3 are arranged on the moving chassis 4. The lifting device 2 is located at the center of the moving chassis 4, and the water spraying pipe 3 is arranged around the lifting device 2.

[0027] ​The high-pressure abrasive water jet 5 is arranged on the top rail 8 by a support 14 and is detachably fixed by a screw; the nozzle of the high-pressure abrasive water jet 5 is vertically upward, and the high-pressure abrasive water jet 5 is remotely connected with the abrasive water jet supply device 1 through a pipeline.

[0028] The abrasive water jet supply device 1 has the following basic components and principles: It comprises an engine, a high-pressure plunger pump, an abrasive tank, a jet pump mixer and the like, the high-pressure plunger pump sucks external fire-fighting water to generate high-pressure water, the high-pressure water is divided into two paths, one path enters the abrasive tank from the high-pressure plunger pump, and the other path enters the jet pump mixer, the jet pump mixer generates negative pressure inside due to the influence of the jet, the negative pressure sucks the sand-water mixture in the abrasive tank to mix with the high-speed water in the other path, thereby providing abrasive water for the front-end mobile breaking and fire extinguishing cooling device.

[0029] When the present application is used, the firefighter pushes the mobile chassis under the automobile chassis through a hand crank long rod; one hand of the firefighter can hold the long rod, and the other hand rotates the handle, so that the torque is transmitted to the front-end hand crank shaft, the screw rod of the hand crank shaft drives the mobile shaft to move along the axial direction of the screw rod, and the up-down movement of the X-cross arm is realized; wherein the X-cross arm is retracted by rotating the hand crank long rod, the lifting mechanism is lifted upward, the height is increased, the top rail is lifted, the high-pressure abrasive water jet moves upward together with the top rail until the lifting height limit is reached or the puncture surface is reached, the screw rod can realize self-locking, and in the case that the torque is not received, the lifting mechanism will not move downward due to its own weight or external load; after the high-pressure abrasive water jet is close to the battery position of the chassis, the abrasive water jet supply device is started, the abrasive water is sprayed out of the high-pressure abrasive water jet to pierce the battery guard plate and the shell of the vehicle chassis, the position of the mobile chassis can be adjusted through the hand crank long rod, the cutting of the guard plate and the shell is formed, the fire source can be exposed and the internal pressure of the battery can be released; at the same time, the fire water pump is started, the fire water and the fire extinguishing agent are sprayed out of the nozzles through the water spraying pipe, can enter the battery pack through the cut opening formed by cutting, and can cool and extinguish the automobile chassis and the battery, and can uniformly cool the vehicle chassis and protect the entire mobile new energy automobile chassis breaking and fire extinguishing cooling device.

[0030] The present application has the advantages of simple structure, convenient operation, direct injection of fire extinguishing liquid / agent into the burning battery, greatly improved fire extinguishing and cooling effect, reduced burning time of the vehicle battery, and reduced risk of subsequent deflagration and explosion.

[0031] Although the above-described methods are illustrated and described as a series of structures for simplicity, it is to be understood that the methods are not limited by the illustrated order, as some structures could occur in different orders and / or concurrently with each other. In another embodiment, structures from two or more different examples can be performed in the same order. Sub-combinations of structures and actions from multiple examples can also be used to implement techniques of the present disclosure.

[0032] The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile new energy vehicle chassis dismantling, fire extinguishing, and cooling device, characterized in that, Includes an abrasive water jet supply device, a lifting device, a water spray pipe, and a mobile chassis; The lifting device and the water spray pipe are mounted on a mobile chassis with rollers. The lifting device is located at the center of the mobile chassis, and the water spray pipe is laid around the lifting device. The mobile chassis can be moved under the car chassis; One end of the sprinkler pipe is closed, and the other end serves as a water inlet, which is connected to the fire pump. Several nozzles are installed on the sprinkler pipe, with the nozzle outlets facing the vehicle chassis. The lifting device is equipped with a high-pressure abrasive water nozzle with the nozzle pointing vertically upward. The high-pressure abrasive water nozzle is remotely connected to the abrasive water jet supply device via a pipeline.

2. The mobile new energy vehicle chassis dismantling, fire extinguishing, and cooling device as described in claim 1, characterized in that, The lifting device is a hand-cranked cross-arm lifting device, including a bottom rail, an X-shaped cross-arm lifting arm, a top rail, a hand crank shaft, and a hand crank. The X-shaped cross-arm lifting arm is located between the bottom rail and the top rail. The bottom rail and the top rail are each provided with a fixed rotating shaft at one end, and the fixed rotating shafts at the ends of the upper and lower arms on the same side of the X-shaped lifting arm are rotatably connected. The inner sides of the bottom rail and the top rail are provided with grooves along the length of the bottom rail and the top rail; The bottom rail and the top rail are each provided with a movable pivot at their other ends, and the ends of the movable pivots are set in the corresponding grooves of the bottom rail / top rail; the ends of the upper and lower arms on the same side of the X-shaped lifting arm are rotatably connected to their respective movable pivots. As the X-shaped lifting arm rises and falls, the movable pivot can move laterally in the slide, thereby raising / lowering the height of the top rail; The high-pressure abrasive water nozzle is fixedly mounted on the top rail by a bracket; The hand crank is a long threaded rod, located between the fixed rotating shaft and the movable rotating shaft at the lower end of the X-shaped lifting arm; one end of the hand crank passes through a pre-set through hole on the fixed rotating shaft and is connected to the hand crank; the other end of the hand crank passes through a pre-set internal threaded hole on the movable rotating shaft, forming a threaded engagement connection; rotating the hand crank can drive the hand crank to rotate, and the clockwise / counterclockwise rotation of the hand crank can drive the movable rotating shaft with the internal threaded hole to move back and forth on the external thread of the hand crank; The hand crank is a long rod.

3. The mobile new energy vehicle chassis dismantling, fire extinguishing and cooling device as described in claim 2, wherein the hand crank shaft is connected to the hand crank rod via a universal joint coupling.

4. The mobile new energy vehicle chassis dismantling, fire extinguishing, and cooling device as described in claim 1, characterized in that, The water spray pipe is U-shaped and is arranged around the lifting device. The nozzle is located on the outer wall of the U-shaped water spray pipe, and the water outlet of the nozzle is angled upward and outward of the U-shape.

5. The mobile new energy vehicle chassis dismantling, fire extinguishing, and cooling device as described in claim 4, characterized in that, The inner wall of the U-shaped water pipe is also equipped with a nozzle, and the nozzle nozzle is angled upward and inward into the U-shape.

6. The mobile new energy vehicle chassis dismantling, fire extinguishing, and cooling device as described in claim 4 or 5, characterized in that, The nozzle's outlet is at a 45° angle.

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