Fire extinguishing device

Abstract

The invention provides a fire extinguishing device, and belongs to the technical field of fire fighting equipment. The problem that in the prior art, a fire blanket is difficult to unfold smoothly, and consequently the use reliability of a fire extinguishing device is insufficient is solved. The fire extinguishing device comprises a fire extinguishing blanket and a rectangular-frame-shaped hanging bracket, long-strip-shaped blanket supporting plates are arranged on the outer side of each long edge of the hanging bracket in parallel, the cross section of each blanket supporting plate is in an L shape, the blanket supporting plates are hinged to the hanging bracket, one side wall of each blanket supporting plate is vertically arranged, and the other side wall of each blanket supporting plate is formed by inwards bending the lower end of the vertical side wall of the blanket supporting plate; a plurality of hanging plates are fixedly connected to the fire blanket, the hanging plates are arranged in two rows, the two rows of hanging plates are connected to the two long edges of the hanging bracket through locking structures correspondingly, and the hanging plates in each row are located on the inner sides of the adjacent blanket supporting plates and right face the vertical side walls of the blanket supporting plates. The two sides of the fire blanket are contained between the vertical side walls of the two blanket supporting plates and the opposite hanging plates correspondingly. The fire extinguishing device has the advantages of high use reliability and good fire extinguishing effect.

Description

Technical Field

[0001] This invention belongs to the field of fire protection equipment technology and relates to a fire extinguishing device. Background Technology

[0002] Currently, with the continuous promotion and application of new energy vehicles, their export transportation demand continues to grow. However, due to the high energy density characteristics of power batteries, thermal runaway may occur during transportation, leading to fires. Especially in shipping scenarios, new energy vehicles are often parked densely. If a fire breaks out in one vehicle, it can easily ignite neighboring vehicles, leading to large-scale vehicle fires and other accidents, posing a significant threat to the safety of transportation vehicles and goods.

[0003] Currently, some fire extinguishing devices for new energy vehicles have appeared on the market, such as an automatic fire extinguishing device for new energy vehicle batteries after thermal runaway (application number: 202510143383.6) disclosed in patent literature. This device includes a base, a control box, a fire blanket body, a release component, and a fire detection probe. The fire blanket has weights on both sides of its edges and a positioning strip fixed to its top surface. The fire blanket is fixed to the bottom of the base by the adsorption between the positioning strip and the fixing strip on the base. The fire blanket is stored in a disc-shaped or roll-like manner on both sides. When a fire occurs, the control box receives a detection signal and cuts off the power to the electromagnet, causing the weights to fall and pull the fire blanket to unfold and cover the fire area. Although this fire extinguishing device has automatic fire extinguishing function, it has the following shortcomings:

[0004] In this device, the fire blanket is stacked in a dish-like or roll-like shape on both sides beneath the base for storage. This design ensures stability in relatively stable environments such as parking lots. However, when used in transportation scenarios like ship or truck transport, the rolling of the ship and the bumps in the road can cause the stacked fire blanket to shift and loosen, potentially even partially unfolding before a fire breaks out. If a fire occurs, this abnormal state hinders the smooth unfolding of the fire blanket, leading to misalignment or incomplete unfolding, severely impacting firefighting effectiveness. Therefore, when used in cargo transportation scenarios, this firefighting device suffers from insufficient reliability due to the difficulty in smoothly unfolding the fire blanket. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a fire extinguishing device. The technical problem solved by this fire extinguishing device is to resolve the issue of insufficient reliability in the use of existing fire extinguishing devices when the fire blanket is difficult to deploy smoothly in cargo transportation scenarios.

[0006] The objective of this invention can be achieved through the following technical solution: A fire extinguishing device, comprising a fire blanket and a rectangular frame-shaped hanger, characterized in that a strip-shaped blanket support plate is provided parallel to the outer side of each long side of the hanger, the blanket support plate has an L-shaped cross-section and is hinged to the hanger, one side wall of the blanket support plate is vertically arranged, and the other side wall is formed by bending inward from the lower end of its vertical side wall; several hanging plates are fixedly connected to the fire blanket and arranged in two rows, the two rows of hanging plates are respectively connected to the two long sides of the hanger by a locking structure so that the middle part of the fire blanket is below the hanger and in an unfolded state, each hanging plate in each row is located inside the adjacent blanket support plate and is directly opposite the vertical side wall of the blanket support plate, the two sides of the fire blanket are respectively housed between the vertical side walls of the two blanket support plates and the opposite hanging plates, the hanger is also provided with a blanket-releasing drive structure that can drive the blanket support plate to flip upward and move away from the adjacent hanging plate, and the locking structure can unlock so that each hanging plate is detached from the hanger.

[0007] For fire extinguishing devices, fire blankets need to be dropped entirely from the hanger in the event of a fire. In existing technologies, it is difficult to implement a restraining structure on the sides of the stacked fire blankets to prevent displacement or loosening of the stacked portion after the sides are stacked. While a restraining structure to fix the stacking shape can prevent displacement or loosening during transport, it would also obstruct the free fall of the fire blankets, rendering them ineffective for fire extinguishing. Therefore, maintaining the initial shape and position of the fire blanket stack to ensure reliable operation during cargo transport presents significant technical challenges.

[0008] To address this technical problem, this fire extinguishing device first modifies the existing design of fire blankets, creating a structure with two rows of hanging plates. During installation, the middle section of the fire blanket is connected to the two long sides of the hanger via the two rows of hanging plates, placing the middle section of the fire blanket below the hanger and in an unfolded state. Furthermore, each long side of the hanger has parallel, elongated support plates with an L-shaped cross-section. One side wall of each support plate is vertical, while the other side wall is formed by bending inward from the lower end of the vertical side wall. Each hanging plate in each row is located inside an adjacent support plate and directly opposite its vertical side wall. This structure allows the two sides of the fire blanket to be respectively housed between the vertical side walls of two support plates and their corresponding hanging plates, and supported by the other side wall of the support plate. When a fire occurs, the blanket-laying drive structure drives the blanket support plate, which is hinged to the hanger, to flip upwards and move away from the adjacent hanging plate. At this time, the two sides of the fire blanket lose the support of the blanket support plate and unfold downwards under the action of gravity. Afterwards, the locking structure unlocks, and each hanging plate detaches from the hanger and falls downwards with the fire blanket.

[0009] In the aforementioned improvements, because the sides of the fire blanket are limited by the support plates and hanging plates, and the bottom is also supported by the support plates, the sides of the fire blanket, once folded up, will not shift or loosen even when used in cargo transportation scenarios where the fire extinguishing device shakes or bumps with the transport device. The fire blanket can always maintain its initial folded state, thus ensuring that the fire blanket can be smoothly deployed in the event of a fire. This effectively solves the technical problem of traditional fire extinguishing devices being unable to deploy smoothly due to transportation environments, affecting the reliability of use. Furthermore, since the two rows of hanging plates are directly mounted on the fire blanket, they can fall downwards with the entire fire blanket without obstructing its free fall. These hanging plates not only serve the installation and positioning function of connecting the fire blanket to the hanger, but also work with the L-shaped support plates to limit the folding of the sides of the fire blanket, achieving a dual-purpose design.

[0010] In the aforementioned fire extinguishing device, the hanging plate is L-shaped, with one side wall of the hanging plate connected to the hanger and set horizontally, and the other side wall set vertically and extending downward relative to the hanger. The fire blanket passes around the lower edge of the vertical side wall of the hanging plate, and the two sides of the fire blanket are respectively folded in a continuous Z-shape and stored between the vertical side walls of the two blanket support plates and the opposite hanging plate.

[0011] The mounting plate is L-shaped, with one side horizontally connected to the hanger and the other vertically positioned. This, along with the L-shaped blanket support, helps to limit the movement of the fire blanket on both sides. During installation, the mounting plate is first attached to the hanger to position the center of the fire blanket. Then, the fire blanket is wrapped around the lower edge of the vertical side wall of the mounting plate, allowing both sides to fold between the mounting plate and the blanket support. Clearly, this design cleverly utilizes the mounting plate to position the fire blanket on the hanger without affecting the folding and storage of the sides. In the event of a fire, the fire blanket can unfold quickly and smoothly without obstruction or jamming caused by the mounting plate.

[0012] Furthermore, because the other side wall of the mounting plate extends downward relative to the hanger, the two sides of the fire blanket, once folded up, are lower than the hanger. This allows the two sides of the fire blanket to more smoothly begin to unfold after the support plate flips upward and the fire blanket loses its support. The two sides of the fire blanket are folded in a continuous Z-shape, ensuring that the fire blanket falls naturally along a predetermined folding path, avoiding any obstruction during unfolding. This guarantees that the two sides of the fire blanket can unfold quickly and smoothly under the influence of gravity.

[0013] In the aforementioned fire extinguishing device, a pressure plate is fixedly connected to the lower side of the horizontal sidewall of each hanging plate. The fire blanket corresponding to the pressure plate is sandwiched between the horizontal sidewall of the hanging plate and the pressure plate. The vertical sidewalls of any two adjacent hanging plates in each row are hinged together.

[0014] The pressure plates ensure a stable connection between the mounting plates and the fire blanket. The hinged design of the vertical sidewalls of adjacent mounting plates allows the angle between them to be adjusted according to the vehicle's shape after the fire blanket is unfolded and lowered as a whole. This ensures the fire blanket tightly covers the vehicle, better isolating air and improving fire suppression effectiveness. Furthermore, the hinged design connects each row of mounting plates like a chain. When attaching the plates to the fire blanket, there's no need to install each plate individually; simply place a row of plates on the fire blanket and then connect the pressure plates to each plate sequentially, greatly improving installation efficiency.

[0015] In the aforementioned fire extinguishing device, several connecting plates are fixedly connected to each long side of the hanger, spaced apart along the corresponding long side. A swing arm is fixedly connected to the support plate at a position corresponding to each connecting plate. One end of the connecting plate extends outward relative to the hanger and is hinged to the corresponding swing arm. A spring rod is also provided on the upper side of the connecting plate. One end of the spring rod is hinged to the swing arm, and the other end is hinged to the connecting plate.

[0016] The spring-loaded rod is located on the upper side of the connecting plate, with one end hinged to the swing arm. This ensures that the pushing point of the spring-loaded rod is higher than the hinge point of the swing arm. Therefore, the pushing force generated by the spring-loaded rod causes the lower end of the swing arm to always tend to swing inward, thus achieving stable closure of the blanket support plate under normal conditions. This reliably stores and limits the fire blanket. Simultaneously, by setting multiple sets of connecting plates, swing arms, and spring-loaded rods at different positions on each long side of the hanger, the blanket support plate is subjected to inward closing constraints at multiple locations. This ensures that even in complex transportation environments such as ship swaying or vehicle bumps, the blanket support plate maintains a stable closed state, preventing displacement or loosening of the sides of the fire blanket. This ensures that the fire blanket can smoothly deploy in the event of a fire, effectively improving the reliability of the fire extinguishing device.

[0017] In the aforementioned fire extinguishing device, the swing arm is L-shaped, with its two ends respectively attached and fixed to the outer surfaces of the side walls of the blanket support plate. This design provides a large contact area between the swing arm and the blanket support plate, making the connection between them more stable and dispersing the stress generated when the swing arm drives the blanket support plate to swing. This reduces the risk of deformation of the blanket support plate due to excessive local stress, further improving the reliability of the fire extinguishing device.

[0018] In the aforementioned fire extinguishing device, the mounting plate has an annular hinge protrusion 1 integrally formed at the bottom of one end of its vertical sidewall, and a hinge end plate fixedly connected to the other end. The hinge end plate has an annular hinge protrusion 2 integrally formed thereon. The hinge protrusion 1 on the mounting plate and the hinge protrusion 2 on the adjacent hinge end plate are abutted and hinged together by a connecting pin. The abutment of the hinge protrusion 1 and the hinge protrusion 2, achieved through the connecting pin, not only facilitates installation but also ensures high reliability of the hinge structure between adjacent mounting plates.

[0019] In the aforementioned fire extinguishing device, a parallel side plate is fixedly connected to the side of the vertical sidewall of the mounting plate. An annular hinge protrusion (third part) is integrally formed at the bottom of one end of the side plate, and a pad is sandwiched between this end of the side plate and the vertical sidewall of the mounting plate. The first hinge protrusion and the adjacent third hinge protrusion face each other. The second hinge protrusion passes between the first and third hinge protrusions, and all three are hinged together by a connecting pin. When making a hinged connection between two adjacent mounting plates, a preset gap is formed between the first and third hinge protrusions by the pad. The second hinge protrusion on one of the mounting plates can be inserted into this gap before the connecting pin is installed. This forms a "plug-in" installation method to complete the assembly between the two mounting plates, thereby improving assembly efficiency and ensuring high reliability of the hinge structure between adjacent mounting plates.

[0020] In the above-mentioned fire extinguishing device, each swing arm on the two blanket support plates is arranged facing each other along the width direction of the hanger. The blanket-laying drive structure includes a pull rope and a rope-winding motor arranged on the hanger. The drive shaft of the rope-winding motor has a rope-passing hole in the radial direction. The pull rope passes through the rope-passing hole, and the two ends of the pull rope are respectively connected to the upper ends of the two swing arms facing each other on the two blanket support plates.

[0021] When the rope motor starts, the drive shaft rotates. Since the rope passes through the rope hole on the drive shaft, the rope will wrap around the drive shaft during the rotation of the drive shaft. At the same time, it pulls the upper end of the swing arm to swing inward, so that the lower end of the swing arm carries the blanket support plate upward and flips it away from the adjacent hanging plate, thereby causing the two sides of the fire blanket to fall down and unfold.

[0022] In the aforementioned fire extinguishing device, the blanket-laying drive structure includes a rack, a gear shaft, and a push rod motor. The swing arm is fixedly connected to the gear shaft and hinged to one end of the connecting plate via the gear shaft. The rack is horizontally positioned and perpendicular to the gear shaft, slidingly connected to the hanger along its axial direction and meshing with the gear surface on the gear shaft. The push rod of the push rod motor is coaxially fixedly connected to the rack and can drive the rack to move axially. The push rod motor is existing technology; it is an electric drive device that converts the rotational motion of a motor into the linear reciprocating motion of a push rod. When the push rod motor starts, its push rod retracts inward. Since the push rod of the push rod motor is coaxially fixedly connected to the rack, it drives the rack to move axially, simultaneously driving the gear shaft to rotate. The swing arm is hinged to the connecting plate via the gear shaft; the rotation of the gear shaft drives the swing arm to rotate, causing the lower end of the swing arm, carrying the blanket support plate, to flip upward, moving the blanket support plate away from the adjacent hanging plate, thereby causing the two sides of the fire blanket to fall downward and unfold.

[0023] In the aforementioned fire extinguishing device, the locking structure consists of several locking pins arranged at intervals along the long side of the hanger. The locking pins are vertically positioned and axially fixed to the hanger. The lower end of the locking pin protrudes to the side to form a supporting protrusion. Hanging holes are provided on the horizontal sidewall of the hanging plate and the pressure plate. The opening size of the hanging hole is larger than the cross-sectional size of the locking pin at the corresponding axial position of the supporting protrusion. The hanging holes correspond one-to-one with the locking pins, and the hanging plate is fitted onto the locking pins through the hanging holes. The supporting protrusion on the locking pin is misaligned with the corresponding hanging hole and abuts against the lower side of the pressure plate. Each long side of the hanger is also provided with a long strip-shaped unlocking bar that is pulsatorically connected to each locking pin on the corresponding long side. The unlocking bar can move axially and drive the locking pin to rotate synchronously to align its supporting protrusion with the hanging hole. The opening size of the hanging hole is larger than the cross-sectional size of the locking pin at the corresponding axial position of the supporting protrusion. This allows the lower end of the locking pin to pass through the hanging hole when installing the hanging plate. Then, by rotating the locking pin, the supporting protrusion of the locking pin is misaligned with the corresponding hanging hole and abuts against the pressure plate, thus positioning the hanging plate on the hanger. This fixing method ensures that when the fire extinguishing device is used in cargo transportation scenarios, even if the fire extinguishing device shakes or jolts with the transport device, or is affected by strong winds, the center of the fire blanket remains unfolded and stably fixed below the hanger, preventing abnormal downward falling. Therefore, this design further improves the reliability of the fire extinguishing device, ensuring that the fire blanket falls in the preset state in the event of a fire, achieving a better fire extinguishing effect.

[0024] By installing elongated unlocking strips on each long side of the hanger, when the unlocking strips move axially, they drive the locking pins connected to them to rotate synchronously. After the locking pins rotate, their supporting protrusions align with the hanging holes. At this point, the hanging plate loses the support of the locking pins and falls freely along with the fire blanket. Because the elongated unlocking strips are connected to each locking pin and drive the locking pins to rotate synchronously, the synchronicity of the hanging plate's fall is ensured. This allows the fire blanket to fall smoothly and steadily along a preset trajectory, thereby ensuring that the fire blanket can accurately cover the vehicle and further guaranteeing the reliability of the fire extinguishing device and the stability of its fire extinguishing effect.

[0025] In the aforementioned fire extinguishing device, the locking structure is an electromagnet fixed to the long side of the hanger, and the hanging plate is attracted to the electromagnet. When the electromagnet is de-energized, the locking structure unlocks, the hanging plate detaches from the hanger, and falls off the hanger along with the fire blanket.

[0026] In the aforementioned fire extinguishing device, the included angle between the two side walls of the blanket support plate is 90-110 degrees. This angle design allows the blanket support plate to stably support the fire blanket under normal conditions, and when the swing arm rotates it upwards, it allows the two sides of the fire blanket to fall downwards and unfold more smoothly.

[0027] Compared with existing technologies, this fire extinguishing device has the following advantages:

[0028] 1. In this fire extinguishing device, even when used in a cargo transportation scenario, the fire extinguishing device will not shift or loosen on both sides when it shakes or bumps with the transportation device. The fire extinguishing blanket will always maintain its initial folded state, thus ensuring that the fire extinguishing blanket can be smoothly deployed in the event of a fire. This effectively solves the technical problem of traditional fire extinguishing devices being unable to deploy smoothly due to the transportation environment, which affects the reliability of use.

[0029] 2. The hinged design of the vertical sidewalls of the adjacent mounting plates allows the angle between adjacent mounting plates to be adjusted according to the shape of the vehicle after the fire blanket is unfolded and lowered as a whole. This ensures that the fire blanket tightly covers the vehicle, better isolates the air, and improves the fire extinguishing effect. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the fire extinguishing device.

[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0032] Figure 3 yes Figure 1 The front view at point A in the middle.

[0033] Figure 4 This is a schematic diagram of the structure of a fire blanket.

[0034] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0035] Figure 6 yes Figure 1 Enlarged view of point B in the middle.

[0036] Figure 7 yes Figure 1 Enlarged view of point C in the middle.

[0037] Figure 8 It is an exploded view of the hanging plate, pressure plate, side plate, and pad.

[0038] Figure 9 This is a schematic diagram of the assembly of the hanging panel, pressure plate, side panel, and pad.

[0039] Figure 10 This is a partial structural diagram of Embodiment 1 of the fire extinguishing device.

[0040] Figure 11 This is a partial top view of Embodiment 1 of this fire extinguishing device.

[0041] Figure 12 This is a schematic diagram of the fire blanket unfolding downwards on both sides in Embodiment 1 of this fire extinguishing device.

[0042] Figure 13 This is a schematic diagram of the blanket-laying drive structure in Embodiment 2 of this fire extinguishing device.

[0043] In the diagram, 1. Fire blanket; 2. Hanger; 3. Blanket support plate; 4. Hanging plate; 41. Hinge protrusion one; 5. Pressure plate; 6. Connecting plate; 7. Swing arm; 8. Spring top rod; 9. Hinge end plate; 91. Hinge protrusion two; 10. Connecting pin; 11. Side plate; 111. Hinge protrusion three; 12. Pad plate; 13. Pull rope; 14. Rope winch motor; 15. Rope threading hole; 16. Rack; 17. Gear shaft; 18. Push rod motor; 19. Unlocking bar; 20. Hanging hole; 21. Locking pin; 211. Support protrusion; 22. Gear; 23. Toothed block. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0045] Example 1

[0046] like Figure 1 , Figure 2 and Figure 3As shown, this fire extinguishing device includes a fire blanket 1 and a rectangular frame-shaped hanger 2. The fire blanket 1 is typically rectangular as well. Several hanging plates 4 are fixedly connected to the fire blanket 1, arranged in two rows. The support plate 3 has an L-shaped cross-section and is hinged to the hanger 2. One side wall of the support plate 3 is vertically oriented, and the other side wall is formed by bending inward from the lower end of its vertical side wall. The included angle between the two side walls of the support plate 3 is 90-110 degrees, preferably 100 degrees.

[0047] like Figure 1 and Figure 2 As shown, each long side of the hanger 2 is fixedly connected with several connecting plates 6 spaced apart along the corresponding long side direction. A swing arm 7 is fixedly connected to each connecting plate 6 on the blanket support plate 3 at a position corresponding to each swing arm 7. The swing arms 7 are L-shaped, and their two ends are respectively attached to the outer surfaces of the two side walls of the blanket support plate 3. The swing arms 7 on the two blanket support plates 3 are arranged opposite each other along the width direction of the hanger 2. One end of the connecting plate 6 extends outward relative to the hanger 2 and is hinged to the corresponding swing arm 7. A spring rod 8 is also provided on the connecting plate 6. The spring rod 8 is located on the upper side of the connecting plate 6, with one end hinged to the swing arm 7 and the other end hinged to the connecting plate 6.

[0048] like Figure 4 and Figure 5 As shown, the fire blanket 1 has two rows of plate-shaped hanging panels 4, combined with Figure 2 and Figure 3 As shown, the two rows of hanging plates 4 are connected to the two long sides of the hanger 2 by a locking structure, so that the middle part of the fire blanket 1 is below the hanger 2 and in an unfolded state. Each hanging plate 4 in each row is located inside the adjacent blanket support plate 3 and is directly opposite the vertical side wall of the blanket support plate 3. The two sides of the fire blanket 1 are respectively stored between the vertical side walls of the two blanket support plates 3 and the opposite hanging plate 4. The hanger 2 is also provided with a blanket-releasing drive structure that can drive the blanket support plate 3 to flip upward and move away from the adjacent hanging plate 4, and the locking structure can unlock so that each hanging plate is detached from the hanger.

[0049] like Figure 2 and Figure 3 As shown, the hanging plate 4 is L-shaped. One side wall of the hanging plate 4 is connected to the hanger 2 and is set horizontally, while the other side wall is set vertically and extends downward relative to the hanger 2. The horizontal side wall is fixedly connected to the fire blanket 1. The fire blanket 1 passes around the lower edge of the vertical side wall of the hanging plate 4. The two sides of the fire blanket 1 are stored between the vertical side walls of the two blanket support plates 3 and the opposite hanging plate 4 in a continuous Z-shaped folding manner.

[0050] Combination Figure 6 and Figure 7As shown, the blanket-laying drive structure includes a pull rope 13 and a rope-winding motor 14 mounted on the hanger 2. The drive shaft of the rope-winding motor 14 has a rope-passing hole 15 along the radial direction. The pull rope 13 passes through the rope-passing hole 15, and the two ends of the pull rope 13 are respectively connected to the upper ends of two opposing swing arms 7 on the two blanket-supporting plates 3.

[0051] like Figure 5 , Figure 8 and Figure 9 As shown, a pressure plate 5 is fixedly connected to the lower side of the horizontal sidewall of each hanging plate 4. The fire blanket 1 is sandwiched between the horizontal sidewall of the hanging plate 4 and the pressure plate 5 at the part corresponding to the pressure plate 5. The vertical sidewalls of any two adjacent hanging plates 4 in each row are hinged together. Specifically, an annular hinge protrusion 41 is integrally formed at the bottom of one end of the vertical sidewall of the hanging plate 4, and a hinge end plate 9 is fixedly connected to the other end. The hinge end plate 9 is integrally formed with an annular hinge protrusion 91. The hinge protrusion 41 on the hanging plate 4 abuts against the hinge protrusion 91 on the adjacent hinge end plate 9 and is hinged together by a connecting pin 10.

[0052] Furthermore, such as Figure 8 and Figure 9 As shown, a side plate 11 parallel to the vertical sidewall of the hanging plate 4 is also fixedly connected to the side. A ring-shaped hinge protrusion 3 111 is integrally formed at the bottom of one end of the side plate 11. A pad 12 is sandwiched between this end of the side plate 11 and the vertical sidewall of the hanging plate 4. The first hinge protrusion 41 and the adjacent third hinge protrusion 3 111 face each other. The second hinge protrusion 91 passes between the first hinge protrusion 41 and the third hinge protrusion 3 111, and the three are hinged together by a connecting pin 10. When making a hinged connection between two adjacent hanging plates 4, a preset gap is formed between the first hinge protrusion 41 and the third hinge protrusion 3 111 by the pad 12. The second hinge protrusion 91 on one of the hanging plates 4 can be inserted into this gap before the connecting pin 10 is installed. Figure 9 As shown, this forms a "plug-in" installation method to complete the assembly between the two mounting plates 4, thereby improving the assembly efficiency and making the hinge structure between the two adjacent mounting plates 4 highly reliable.

[0053] The hanging plate 4 is connected to the hanger 2 via a locking structure, so that after the two sides of the fire blanket 1 fall downwards and unfold in the event of a fire, the supporting plate 3 can fall downwards as a whole. Specifically, as follows: Figure 9 , Figure 10 and Figure 11As shown, the locking structure includes several locking pins 21 spaced apart on the long side of the hanger 2. The locking pins 21 are vertically positioned and axially fixed to the hanger 2. The lower end of the locking pin 21 protrudes to the side to form a supporting protrusion 211. Hanging holes 20 are provided on the horizontal sidewall of the hanging plate 4 and the pressure plate 5. The opening size of the hanging hole 20 is larger than the cross-sectional size of the locking pin 21 at the corresponding axial position of the supporting protrusion 211. In this embodiment, the hanging hole 20 is an irregularly shaped hole formed by notching the edge of a circular hole, and its shape is "8". The hanging holes 20 correspond one-to-one with the locking pins 21, and the hanging plate 4 is sleeved on the locking pins 21 through the hanging holes 20. The supporting protrusion 211 is misaligned with the hanging hole 20 and abuts against the lower side of the pressure plate 5, thus locking the hanging plate 4 and preventing the hanging plate 4 and the fire blanket 1 from falling downwards.

[0054] To enable the locking structure to unlock, each long side of the hanger 2 is provided with a long strip-shaped unlocking bar 19 that is pulsatorically connected to the corresponding locking pin 21. Specifically, a gear 22 is fixedly connected to the upper end of the locking pin 21, and several toothed blocks 23 are fixedly connected to the unlocking bar 19, each meshing with a corresponding gear 22. The hanger 2 is also provided with a driving component that can drive the unlocking bar 19 to move axially. This driving component can be a push rod motor, spring, or similar device. When unlocking is required, the driving component moves the unlocking bar 19, which in turn rotates the locking pin 21 via the gear 22, causing the locking pin 21 to rotate to an angle position where its supporting protrusion 211 aligns with the hanging hole 20. This allows the hanging plate 4 to fall off the hanger 2.

[0055] The following is a brief introduction to the working principle of this fire extinguishing device:

[0056] If no fire occurs, Figure 1 and Figure 2 As shown, the middle part of the fire blanket 1 is connected to the two long sides of the hanger 2 via two rows of hanging plates 4, so that the middle part of the fire blanket 1 is below the hanger 2 and in an unfolded state. At this time, the pushing force generated by the spring rod 8 will cause the lower end of the swing arm 7 to always have an inward swing tendency, thereby achieving the stable closure of the blanket support plate 3 under normal conditions.

[0057] When a fire occurs, such as Figure 12 As shown, when the rope motor 14 starts, the drive shaft rotates. Since the rope 13 passes through the rope hole 15 on the drive shaft, the rope 13 will wrap around the drive shaft during the rotation of the drive shaft. At the same time, it pulls the upper end of the swing arm 7 to swing inward, so that the lower end of the swing arm 7 carries the blanket support plate 3 to flip upward, so that the blanket support plate 3 moves away from the adjacent hanging plate 4, and then the two sides of the fire blanket 1 fall down and unfold.

[0058] After the two sides of the fire blanket 1 fall down and unfold, the driving component moves the unlocking strip 19, causing the support protrusion 211 on the locking pin 21 to rotate to an angle position directly opposite the figure-eight shaped hanging hole 20. The locking pin 21 loses its locking function on the hanging plate 4, and the hanging plate 4 and the fire blanket 1 fall down as a whole, covering the burning car, isolating the air, and achieving the effect of extinguishing the fire.

[0059] In practice, a fire hose can also be installed on the hanger 2. After the fire blanket 1 covers the burning car, the fire hose can be quickly turned on to spray water onto the fire blanket 1 and the burning car, further enhancing the fire extinguishing effect and preventing the fire from reigniting.

[0060] Example 2

[0061] This embodiment is basically the same as embodiment one in structure and principle, except that: Figure 13 As shown, the blanket-laying drive structure includes a rack 16, a gear shaft 17, and a push rod motor 18. The swing arm 7 is hinged to one end of the connecting plate 6 via the gear shaft 17. The rack 16 is horizontally arranged and perpendicular to the gear shaft 17. The rack 16 is slidably connected to the hanger 2 along its axial direction and meshes with the gear 22 on the gear shaft 17. The push rod of the push rod motor 18 is coaxially fixed to the rack 16 and can drive the rack 16 to move axially. The push rod motor 18 is existing technology; it is an electric drive device that converts the rotational motion of a motor into the linear reciprocating motion of a push rod. When the push rod motor 18 starts, its push rod retracts inward. Since the push rod of the push rod motor 18 is coaxially fixed to the rack 16, it drives the rack 16 to move axially, and simultaneously drives the gear shaft 17 to rotate. The swing arm 7 is hinged to the connecting plate 6 via the gear shaft 17. When the gear shaft 17 rotates, it will drive the swing arm 7 to rotate, which will cause the lower end of the swing arm 7 to flip upward with the blanket support plate 3, so that the blanket support plate 3 moves away from the adjacent hanging plate 4, and then the two sides of the fire blanket 1 fall downward and unfold.

[0062] Example 3

[0063] This embodiment is basically the same as the first embodiment in terms of structure and principle, except that the locking structure is an electromagnet fixed to the long side of the hanger 2, and the hanging plate 4 is attracted to the electromagnet. When the electromagnet is de-energized, the locking structure unlocks, the hanging plate 4 detaches from the hanger and falls off the hanger 2 along with the fire blanket 1.

[0064] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0065] Although this document frequently uses terms such as 1. fire blanket; 2. hanging bracket; 3. blanket support plate; 4. hanging plate; 41. hinge protrusion one; 5. pressure plate; 6. connecting plate; 7. swing arm; 8. spring top rod; 9. hinge end plate; 91. hinge protrusion two; 10. connecting pin; 11. side plate; 111. hinge protrusion three; 12. pad plate; 13. pull rope; 14. rope winding motor; 15. rope threading hole; 16. rack; 17. gear shaft; 18. push rod motor; 19. unlocking bar; 20. hanging hole; 21. locking pin; 211. support protrusion; 22. gear; 23. toothed block, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A fire extinguishing device, comprising a fire blanket (1) and a rectangular frame-shaped hanger (2), characterized in that, Each long side of the hanger (2) is provided with a long strip of blanket support plate (3) parallel to the outside. The cross-section of the blanket support plate (3) is L-shaped and hinged to the hanger (2). One side wall of the blanket support plate (3) is set vertically, and the other side wall is formed by bending inward from the lower end of its vertical side wall. Several hanging plates (4) are fixedly connected to the fire blanket (1), and each hanging plate (4) is arranged in two rows. The two rows of hanging plates (4) are respectively connected to the two long sides of the hanger (2) by a locking structure so that the middle of the fire blanket (1) is located in the middle. The hanging frame (2) is in an unfolded state below. Each hanging plate (4) in each row is located inside the adjacent blanket support plate (3) and is directly opposite the vertical side wall of the blanket support plate (3). The two sides of the fire extinguishing blanket (1) are respectively stored between the vertical side walls of the two blanket support plates (3) and the opposite hanging plate (4). The hanging frame (2) is also provided with a blanket-releasing drive structure that can drive the blanket support plate (3) to flip upward and move away from the adjacent hanging plate (4). The locking structure can unlock so that each hanging plate (4) is detached from the hanging frame (2).

2. The fire extinguishing device according to claim 1, characterized in that, The hanging plate (4) is L-shaped. One side wall of the hanging plate (4) is connected to the hanger (2) and is set horizontally. The other side wall is set vertically and extends downward relative to the hanger (2). The fire blanket (1) passes around the lower edge of the vertical side wall of the hanging plate (4). The two sides of the fire blanket (1) are stored between the vertical side walls of the two blanket support plates (3) and the opposite hanging plate (4) in a continuous Z-shaped folding manner.

3. The fire extinguishing device according to claim 2, characterized in that, Each hanging plate (4) has a pressure plate (5) fixedly connected to the lower side of the horizontal side wall. The fire blanket (1) corresponding to the pressure plate (5) is sandwiched between the horizontal side wall of the hanging plate (4) and the pressure plate (5). The vertical side walls of any two adjacent hanging plates (4) in each row of hanging plates (4) are hinged together.

4. The fire extinguishing device according to claim 1, 2, or 3, characterized in that, Several connecting plates (6) are fixedly connected to each long side of the hanger (2) and spaced apart along the corresponding long side. A swing arm (7) is fixedly connected to the support plate (3) at the position corresponding to each connecting plate (6). One end of the connecting plate (6) extends outward relative to the hanger (2) and is hinged to the corresponding swing arm (7). A spring rod (8) is also provided on the upper side of the connecting plate (6). One end of the spring rod (8) is hinged to the swing arm (7), and the other end is hinged to the connecting plate (6).

5. The fire extinguishing device according to claim 4, characterized in that, The swing arm (7) is L-shaped, and the two ends of the swing arm (7) are respectively attached to and fixed on the outer side of the two side walls of the blanket support plate (3).

6. The fire extinguishing device according to claim 3, characterized in that, The hanging plate (4) has an annular hinge protrusion 1 (41) integrally formed at the bottom of one end of its vertical sidewall, and a hinge end plate (9) is fixedly connected to the other end. The hinge end plate (9) has an annular hinge protrusion 2 (91) integrally formed on it. The hinge protrusion 1 (41) on the hanging plate (4) is close to the hinge protrusion 2 (91) on the adjacent hinge end plate (9) and is hinged to it by a connecting pin (10).

7. The fire extinguishing device according to claim 6, characterized in that, The side of the vertical side wall of the hanging plate (4) is also fixedly connected to a side plate (11) parallel to it. The bottom of one end of the side plate (11) is integrally formed with an annular hinge protrusion three (111), and a pad plate (12) is sandwiched between the end of the side plate (11) and the vertical side wall of the hanging plate (4). The hinge protrusion one (41) and the adjacent hinge protrusion three (111) are directly opposite each other. The hinge protrusion two (91) passes between the hinge protrusion one (41) and the hinge protrusion three (111), and the three are hinged together by the connecting pin (10).

8. The fire extinguishing device according to claim 4, characterized in that, Each swing arm (7) on the two blanket support plates (3) is arranged facing each other along the width direction of the hanger (2). The blanket-laying drive structure includes a pull rope (13) and a rope-winding motor (14) arranged on the hanger (2). The drive shaft of the rope-winding motor (14) has a rope-passing hole (15) in the radial direction. The pull rope (13) passes through the rope-passing hole (15), and the two ends of the pull rope (13) are respectively connected to the upper ends of the two swing arms (7) facing each other on the two blanket support plates (3).

9. The fire extinguishing device according to claim 4, characterized in that, The blanket-laying drive structure includes a rack (16), a gear shaft (17), and a push rod motor (18). The swing arm (7) is fixedly connected to the gear shaft (17) and hinged to one end of the connecting plate (6) through the gear shaft (17). The rack (16) is horizontally arranged and perpendicular to the gear shaft (17). The rack (16) is slidably connected to the hanger (2) along its axial direction and meshes with the gear surface on the gear shaft (17). The push rod of the push rod motor (18) is coaxially fixedly connected to the rack (16).

10. The fire extinguishing device according to claim 3, characterized in that, The locking structure consists of several locking pins (21) spaced apart on the long side of the hanger (2). The locking pins (21) are vertically positioned and axially fixed to the hanger (2). The lower end of the locking pin (21) protrudes to the side to form a supporting protrusion (211). Hanging holes (20) are provided on the horizontal sidewall of the hanging plate (4) and the pressure plate (5). The opening size of the hanging hole (20) is larger than the cross-sectional size of the locking pin (21) at the corresponding axial position of the supporting protrusion (211). The hanging hole (20) and the locking pin (21) are paired one-to-one. The hanging plate (4) is fitted onto the locking pin (21) through the hanging hole (20). The supporting protrusion (211) on the locking pin (21) is misaligned with the corresponding hanging hole (20) and abuts against the lower side of the pressure plate (5). Each long side of the hanger (2) is also provided with a long strip-shaped unlocking strip (19) that is connected to each locking pin (21) on the corresponding long side. The unlocking strip (19) can move axially and drive the locking pin (21) to rotate synchronously to align its supporting protrusion (211) with the hanging hole (20). Alternatively, the locking structure is an electromagnet fixed to the long side of the hanger (2), and the hanging plate (4) is attracted to the electromagnet.

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