Fire extinguishing device

Abstract

The utility model provides a kind of fire extinguishing device, belong to fire-fighting equipment technical field.It solves the problem of insufficient reliability of existing fire extinguishing device use.This fire extinguishing device includes fire blanket and rectangular frame-shaped hanger, and two rows of hanging plate are fixedly connected on fire blanket, and a plurality of hanging holes are spaced apart on each row of hanging plate;A plurality of vertically arranged locking pins are arranged on the two long sides of the hanger, and the locking pins are axially fixed and connected to the hanger in circumferential rotation, and the lower end of the locking pin protrudes to the side to form a support protrusion;Two rows of hanging plate on the fire blanket are respectively arranged on the lower side of the two long sides of the hanger, and the hanging hole and the locking pin are one-to-one corresponding, the support protrusion passes through the corresponding hanging hole, and the support protrusion and the hanging hole are formed by rotating the locking pin Misalignment;Each long side of the hanger is also provided with a long strip-shaped unlocking strip that is drivingly connected to each locking pin on the corresponding long side.The utility model has high use reliability, and the fire extinguishing effect is good.

Description

Technical Field

[0001] This utility model 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. In this device, the two sides of the fire blanket are stacked in a disc-shaped or roll-like manner below the base, while the middle of the fire blanket is fixed to the bottom surface of the base by the adsorption of the positioning strip and the fixing strip on the base. When a fire occurs, the two sides of the fire blanket first fall downwards and unfold, and then, relying on the weight of the weight block and the fire blanket itself, the positioning strip is detached from the fixing strip, thus causing the fire blanket to fall downwards and cover the fire area. Although this fire extinguishing device has an automatic fire extinguishing function, it has the following shortcomings:

[0004] The positioning strip in the middle of the fire blanket is magnetically attached to the fixing strip on the base. To ensure the fire blanket can fall smoothly in the event of a fire, the magnetic force between the positioning strip and the fixing strip cannot be too strong. When this design is used in relatively stable environments such as parking lots, the magnetic force between the positioning strip and the fixing strip can ensure the stable fixation of the fire blanket in the middle. However, when this fire extinguishing device is used in transportation scenarios such as ship or truck transport, there are not only dynamic external forces such as ship swaying and road bumps during transportation, but also strong winds that may act on the fire blanket through gaps in the vehicle compartment or ship ventilation openings. This can cause the positioning strip to detach from the fixing strip prematurely, resulting in the fire blanket partially unfolding or falling off even before a fire occurs. Once a fire breaks out, this abnormal state will hinder the smooth unfolding of the fire blanket, ultimately causing problems such as deviation in the coverage position of the fire blanket or failure to fully unfold, seriously affecting the fire extinguishing effect. Therefore, this fire extinguishing device has insufficient reliability when used in cargo transportation scenarios. 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. This invention solves the problem that existing fire extinguishing devices are not reliable enough when used in cargo transportation scenarios, which can easily lead to poor fire extinguishing effects.

[0006] The objective of this utility model can be achieved through the following technical solution: A fire extinguishing device includes a fire blanket and a rectangular frame-shaped hanger, characterized in that two rows of hanging plates are fixedly connected to the fire blanket, and each row of hanging plates is provided with a plurality of hanging holes spaced apart; a plurality of vertically arranged locking pins are arranged at intervals on the two long sides of the hanger, the locking pins are axially fixed and circumferentially rotatably connected to the hanger, and the lower end of the locking pin protrudes to the side to form a supporting protrusion; the two rows of hanging plates on the fire blanket are respectively arranged on the lower side of the two long sides of the hanger, and the hanging holes correspond one-to-one with the locking pins, so that the middle part of the fire blanket is unfolded and located below the hanger, the supporting protrusion passes through the corresponding hanging hole, and the supporting protrusion and the hanging hole are misaligned by rotating the locking pin; 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 an angle position where its supporting protrusion is aligned with the hanging hole.

[0007] In the improved design of the fire extinguishing device, the existing design of the fire blanket was changed to form a fire blanket structure with two rows of hanging plates. During installation, the middle part of the fire blanket is fixed to the two long sides of the hanger by the two rows of hanging plates, and the hanging holes correspond one-to-one with the locking pins. This allows the middle part of the fire blanket to unfold and be located below the hanger, while the two sides of the fire blanket can be folded and stored separately on the two long sides of the hanger, just like in the existing technology.

[0008] To secure the mounting plates, this fire extinguishing device does not employ the existing magnetic adsorption method. Instead, it uses several hanging holes spaced apart on each row of mounting plates. During installation, the supporting protrusion passes through the hanging hole, and then the locking pin is rotated to misalign the supporting protrusion with the corresponding hanging hole, thus preventing the mounting plate from falling. At this point, the mounting plate is positioned on the hanger. This positioning method ensures that even when the fire extinguishing device is used in cargo transportation scenarios, and is subject to shaking or bumps from the transport vehicle, or strong winds, the fire blanket will always remain unfolded and stably fixed below the hanger, preventing any abnormal downward fall. Therefore, this fire extinguishing device has high reliability, guaranteeing that the fire blanket will fall as preset in the event of a fire, achieving a good fire extinguishing effect.

[0009] Based on this, elongated unlocking strips are installed 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 obstruction of the locking pins and falls together 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.

[0010] In the aforementioned fire extinguishing device, the mounting plate is L-shaped, with one side wall of the mounting plate horizontally arranged and close to or abutting against the lower side of the hanger. The hanging hole is opened on the horizontally arranged side wall of the mounting plate, and a pressure plate is fixedly connected to the lower side of the side wall. The fire blanket corresponding to the pressure plate is sandwiched between the horizontally arranged side wall of the mounting plate and the pressure plate, and the lower side of the pressure plate abuts against the support protrusion of the locking pin.

[0011] By designing the mounting plate in an L-shape and fixing a pressure plate to the lower side of its horizontal sidewall, the fire blanket corresponding to the pressure plate is securely clamped between the horizontal sidewall and the pressure plate, enhancing the connection stability between the mounting plate and the fire blanket. When the horizontal sidewall of the mounting plate is against the lower side of the hanger, the mounting plate and hanger are in direct contact. Since the lower side of the pressure plate also abuts against the support protrusion of the locking pin, the vertical position of the mounting plate is precisely fixed, with no room for vertical movement. This improves the stability of the mounting plate installation and ensures the fire blanket is stably fixed below the hanger. When the horizontal sidewall of the mounting plate is close to the lower side of the hanger, there is a small gap between the mounting plate and the hanger. In this case, under the action of gravity, the lower side of the pressure plate abuts against the support protrusion of the locking pin, preventing the mounting plate from falling and ensuring it is stably positioned on the hanger.

[0012] In the aforementioned fire extinguishing device, a gear is fixedly fitted onto the upper end of each locking pin, and several racks are fixedly connected to the unlocking bar, each meshing with a corresponding gear. When the unlocking bar moves axially, it drives the locking pins on the hanger to rotate synchronously through the racks and gears, ensuring that each hanging plate loses the obstruction of the supporting protrusions and falls synchronously. This allows the fire blanket to fall more smoothly and steadily, accurately covering the vehicle and further improving the reliability of the fire extinguishing device. When no fire occurs, the unlocking bar is axially fixed, and the racks restrict the rotation of the gears, ensuring that the locking pins do not rotate on their own, thus effectively preventing the fire blanket from accidentally falling off during transportation.

[0013] In the aforementioned fire extinguishing device, the hanger is equipped with a push rod motor that can drive the unlocking bar to move axially. Each locking pin has a fixedly connected strip-shaped crank at its upper end, perpendicular to the locking pin. The crank has a strip-shaped hole arranged radially along the locking pin. Several hinged posts are fixedly connected to the unlocking bar, each corresponding to a slot in the slot. When a fire occurs and a fire blanket needs to be thrown, the push rod motor starts, driving the unlocking bar to move axially. Because the hinged posts fixedly connected to the unlocking bar pass through the slots in the upper cranks of each locking pin, the axial movement of the unlocking bar causes the hinged posts to slide relative to each other within the slots, thereby causing the crank to rotate around the locking pin. The rotation of the crank then causes the locking pin to rotate synchronously. When the locking pin rotates until its supporting protrusion is vertically aligned with the notch of the hanging hole, the fire blanket is thrown down.

[0014] In the aforementioned fire extinguishing device, this fire extinguishing device also includes a pin. Each unlocking bar is fixedly connected to a moving pin seat. A fixed pin seat, fixedly connected to a hanger, is located beside the moving pin seat. The pin is inserted into the moving pin seat and the fixed pin seat. The hanger is also equipped with a compression spring that pushes the unlocking bar to move axially after the pin is disengaged from the moving pin seat and the fixed pin seat. The pin being inserted into the moving pin seat and the fixed pin seat restricts the axial movement of the unlocking bar, keeping each locking pin in its current angular position and preventing the fire blanket from falling accidentally. After the pin is disengaged from the moving pin seat and the fixed pin seat, the compression spring, which was originally compressed, releases its elastic potential energy, pushing the unlocking bar to move axially, thereby causing each locking pin connected to it to rotate synchronously, ultimately resulting in the smooth and precise dropping of the fire blanket.

[0015] In the aforementioned fire extinguishing device, this fire extinguishing device also includes a blanket throwing rope and a rope winch motor mounted on the hanger and capable of winding the blanket throwing rope. The drive shaft of the rope winch motor has a rope threading hole in the radial direction. The blanket throwing rope passes through the rope threading hole, and the two ends of the blanket throwing rope are respectively fixedly connected to pins at the two long sides of the hanger.

[0016] When a fire occurs and the winch motor starts, it simultaneously pulls the pins on both long sides of the hanger, causing the unlocking strips on both sides to move synchronously. This, in turn, drives all the locking pins on the hanger to rotate synchronously via a rack and pinion mechanism. This unlocking method ensures that all hanging plates lose support simultaneously, preventing some plates from falling off while others remain secured by the locking pins. This allows the fire blanket to fall more smoothly and accurately cover the vehicle, further improving the reliability of the fire extinguishing device. Furthermore, the advantages of using the throw rope and locking pin positioning unlocking strips include the ability for operators to manually unlock the device by pulling the throw rope even during unexpected power outages. This design effectively avoids device failure due to power outages, further enhancing the reliability of the fire extinguishing device in complex environments.

[0017] In the aforementioned fire extinguishing device, each long side of the hanger is equipped with two block-shaped guide seats. A strip-shaped guide groove is formed on the lower side of the guide seat. A limiting protrusion protrudes from one side wall of the guide groove. The unlocking bar passes between the limiting protrusion and the other side wall of the guide groove, with both the limiting protrusion and the other side wall of the guide groove abutting against the unlocking bar. The abutment of the other side wall of the guide groove and the limiting protrusion against the unlocking bar ensures that the guide seats guide the movement of the unlocking bar. Furthermore, since two guide seats are provided on each long side of the hanger, the unlocking bar receives the combined guiding force of both guide seats, thereby improving the accuracy of its axial movement. This, in turn, enables the stable and precise rotation of each gear, enhancing the reliability of the device.

[0018] In the aforementioned fire extinguishing device, two strip-shaped notches are provided on one side of the unlocking strip. Two guide seats located on the same side of the hanger correspond one-to-one with the two strip-shaped notches on the unlocking strip. The limiting protrusions on the guide seats extend into the corresponding strip-shaped notches. Each strip-shaped notch is equipped with one of the aforementioned compression springs. One end of the compression spring abuts against the unlocking strip, and the other end abuts against the limiting protrusion. By providing strip-shaped notches, not only can the arrangement of compression springs be facilitated in a smaller space, making the product structure compact, but also the sidewalls of the strip-shaped notches allow the ends of the springs to abut against them. This allows the compression springs to push the unlocking strip axially after the pin is pulled out of the fixed pin seat and the fixed pin seat.

[0019] In the aforementioned fire extinguishing device, on the axial direction of the unlocking bar, the side of the limiting protrusion facing away from the compression spring is a certain distance away from the unlocking bar. After the spring pushes the unlocking bar to move axially, the side of the limiting protrusion facing away from the compression spring abuts against the unlocking bar. At the same time, the locking pin rotates to an angle position where its supporting protrusion is aligned with the hanging hole.

[0020] Because the side of the limiting protrusion facing away from the compression spring is a certain distance from the unlocking bar, after the compression spring pushes the unlocking bar axially, the side of the limiting protrusion facing away from the compression spring can abut against the unlocking bar, thus limiting the movement of the unlocking bar. In this design, the limiting protrusion serves a dual purpose: providing abutment for the end of the compression spring and limiting the movement of the unlocking bar. By limiting the movement of the unlocking bar, the rotation angle of the locking pin can be determined, ensuring that after the locking pin rotates, its supporting protrusion aligns with the hanging hole. This allows the fire blanket to reliably fall in the event of a fire, effectively improving the reliability of the fire extinguishing device.

[0021] In the aforementioned fire extinguishing device, the fire blanket has multiple hanging plates arranged in two rows. Each hanging plate has a vertically extending sidewall that extends downwards relative to the hanger. One end of each hanging plate has an integrally formed annular hinge protrusion, and the other end is fixedly connected to a hinge end plate. The hinge end plate has an integrally formed annular hinge protrusion. The hinge protrusion on the hanging plate abuts against the hinge protrusion on the adjacent hinge end plate and is hinged together by a connecting pin. The abutment and hinge connection between the hinge protrusions not only facilitates installation but also ensures high reliability of the hinge structure between adjacent hanging plates. The fire blanket has several scrapers arranged in two rows, and the hinged design of the vertical sidewalls of adjacent hanging plates allows the angle between adjacent hanging plates to be adjusted according to the shape of the vehicle after the fire blanket is unfolded and lowered. This ensures the fire blanket tightly covers the vehicle, better isolates air, and improves the fire extinguishing effect. Meanwhile, the hinged design allows each row of mounting plates to be connected together like a chain. When attaching the mounting plates to the fire blanket, there is no need to install each plate individually. Instead, simply place a row of mounting plates on the fire blanket and then attach the pressure plate to each mounting plate in turn, which greatly improves installation efficiency.

[0022] In the aforementioned fire extinguishing device, a parallel side plate is fixedly connected to the side of the vertical sidewall of the mounting plate. A ring-shaped 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 the aforementioned 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.

[0023] Compared with existing technologies, this fire-fighting and extinguishing device has the following advantages:

[0024] 1. When this fire extinguishing device is used in cargo transportation scenarios, even if the fire extinguishing device shakes or bumps with the transportation device, or is affected by strong winds, the middle of the fire blanket can always remain unfolded and stably fixed below the hanger, and will not fall down abnormally, thus having high reliability.

[0025] 2. The fire blanket has several hanging panels arranged in two rows, with multiple hanging panels in each row. This design allows the fire blanket to adapt its shape to the vehicle after it is lowered, ensuring that the fire blanket tightly covers the vehicle to better isolate it from the air and achieve a good fire extinguishing effect. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the fire extinguishing device.

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of a fire blanket.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Figure 5 yes Figure 2 The front view of the corresponding structure.

[0031] Figure 6 This is a partial 3D view of the fire extinguishing system.

[0032] Figure 7 It is a three-dimensional structural diagram of the locking pin and gear.

[0033] Figure 8 This is a partial top view of the fire extinguishing system.

[0034] Figure 9 yes Figure 1 Enlarged view of point B in the middle.

[0035] Figure 10 yes Figure 1 Enlarged view of point C in the middle.

[0036] Figure 11 yes Figure 1 Enlarged view of point D in the middle.

[0037] Figure 12 This is a three-dimensional structural diagram of the guide seat.

[0038] Figure 13 This is a bottom view of the guide seat, compression spring, and unlocking bar.

[0039] Figure 14 This is a schematic diagram showing the positional layout of the unlocking bar, guide seat, moving pin seat, fixed pin seat, and winch motor on the hanger.

[0040] Figure 15 It is an exploded view of the hanging plate, pressure plate, side plate, and pad.

[0041] Figure 16 This is a schematic diagram of the assembly of the hanging panel, pressure plate, side panel, and pad.

[0042] Figure 17 This is a schematic diagram of the fire blanket in this fire extinguishing device after both sides are unfolded downwards.

[0043] Figure 18 This is a schematic diagram of the transmission structure between the unlocking bar and the locking pin in Embodiment 2.

[0044] In the diagram: 1. Fire blanket; 2. Hanger; 3. Hanging plate; 31. Hanging hole; 32. Hinge protrusion 1; 4. Locking pin; 41. Support protrusion; 5. Unlocking strip; 51. Strip notch; 6. Rope motor; 61. Rope threading hole; 7. Push rod motor; 8. Crank; 81. Strip hole; 9. Hinge column; 10. Guide seat; 101. Guide groove; 102. Limiting protrusion; 11. Blanket throwing pull. 12. Rope; 13. Pin; 14. Compression spring; 15. Moving pin seat; 16. Fixed pin seat; 17. Gear; 18. Rack; 19. Pressure plate; 10. Hinge end plate; 191. Hinge protrusion two; 20. Side plate; 201. Hinge protrusion three; 21. Pad plate; 22. Connecting pin; 23. Blanket support plate; 24. Connecting plate; 25. Swing arm; 26. Spring top rod; 27. Blanket release rope. Detailed Implementation

[0045] 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.

[0046] Example 1

[0047] like Figure 1 and Figure 2 As shown, this fire extinguishing device includes a fire blanket 1 and a rectangular frame-shaped hanger 2. Each long side of the hanger 2 has a parallel strip-shaped blanket support plate 23 on its outer side, and the cross-section of the blanket support plate 23 is L-shaped. An L-shaped swing arm 25 is fixedly connected to the outer wall of the blanket support plate 23. A strip-shaped connecting plate 24 is fixedly connected to each swing arm 25 on the long side of the hanger 2, with one end of the connecting plate 24 hinged to the swing arm 25. A spring rod 26 is also provided on the upper side of the connecting plate, with both ends of the spring rod 26 hinged to the connecting plate 24 and the swing arm 25, respectively. The middle part of the fire blanket 1 unfolds and is located below the hanger 2, while the two sides of the fire blanket 1 are folded and stored along the two long sides of the hanger 2, supported by the blanket support plate 23. Under the action of the spring rod 26, the blanket support plate 23 can be held in place. Figure 2 The state shown ensures that the two sides of the fire blanket 1 will not automatically unfold downwards during normal transportation. When a fire occurs, the swing arm 25 can flip upwards together with the blanket support plate 23 and move away from the adjacent hanging plate 3. At this time, the two side walls of the fire blanket 1 lose the support of the blanket support plate 23 and unfold downwards.

[0048] like Figure 3 and Figure 4 As shown, several hanging plates 3 are fixedly connected to the fire blanket 1, and each hanging plate 3 is arranged in two rows. The hanging plates 3 are provided with hanging holes 31.

[0049] like Figure 5 , Figure 6 and Figure 7 As shown, each long side of the hanger 2 is provided with several locking pins 4 arranged at intervals. The locking pins 4 are axially fixed and circumferentially rotatably connected to the hanger 2. The locking pins 4 are vertically arranged and their lower ends protrude to the side to form supporting protrusions 41. The hanging holes 31 are irregularly shaped holes formed by notches made at the edges of circular holes. The two rows of hanging plates 3 on the fire blanket 1 are respectively arranged on the lower side of the two long sides of the hanger 2, and the hanging holes 31 correspond one-to-one with the locking pins 4, so that the middle part of the fire blanket 1 is unfolded and located below the hanger 2. The supporting protrusions 41 pass through the corresponding hanging holes 31, and the supporting protrusions 41 and hanging holes 31 are misaligned by rotating the locking pins 4.

[0050] like Figure 8 As shown, each long side of the hanger 2 is also provided with a long strip-shaped unlocking bar 5 that is pulsatorically connected to each locking pin 4 on the corresponding long side. The unlocking bar 5 can move axially and drive the locking pin 4 to rotate synchronously to an angle position where its supporting protrusion 41 is aligned with the hanging hole 31. Specifically, in combination with Figure 9 , Figure 10 and Figure 11 As shown, this fire extinguishing device also includes a rope motor 6, a blanket-throwing rope 11, and a pin 12 fixedly connected to the end of the blanket-throwing rope 11. Each unlocking bar 5 is fixedly connected to a moving pin seat 14. A fixed pin seat 15 is fixedly connected to the side of the moving pin seat 14 and the hanger 2. The pin 12 is inserted into the moving pin seat 14 and the fixed pin seat 15. The rope motor 6 can pull the blanket-throwing rope 11, and pulling the blanket-throwing rope 11 causes the pin 12 to disengage from the moving pin seat 14 and the fixed pin seat 15. A gear 16 is fixedly sleeved on the upper end of each locking pin 4. Several racks 17 that mesh with the gears 16 are fixedly connected to the unlocking bar 5. A rope-passing hole 61 is radially opened on the drive shaft of the rope motor 6. The blanket-throwing rope 11 passes through the rope-passing hole 61, and the two ends of the blanket-throwing rope 11 are fixedly connected to the pins 12 in the moving pin seats 14 at the two long sides of the hanger 2.

[0051] Combination Figure 8 , Figure 12 and Figure 13As shown, each long side of the hanger 2 is provided with a compression spring 13. After the blanket-throwing rope 11 is pulled to disengage the pin 12 from the moving pin seat 14 and the fixed pin seat 15, the compression spring 13 can push the unlocking bar 5 to move axially. Specifically, each long side of the hanger 2 is provided with two block-shaped guide seats 10. The lower side of the guide seat 10 is provided with a strip-shaped guide groove 101 along the length direction of the unlocking bar 5. A limiting protrusion 102 is formed on one side wall of the guide groove 101. The unlocking bar 5 passes between the limiting protrusion 102 and the other side wall of the guide groove 101, and both the limiting protrusion 102 and the other side wall of the guide groove 101 are in contact with the unlocking bar 5. Two strip-shaped notches 51 are provided on one side of the unlocking bar 5. Two guide seats 10 located on the same side of the hanger 2 correspond one-to-one with the two strip-shaped notches 51 on the unlocking bar 5. The limiting protrusions 102 on the guide seats 10 extend into the corresponding strip-shaped notches 51. Each strip-shaped notch 51 is provided with a compression spring 13 as described above. One end of the compression spring 13 abuts against the unlocking bar 5, and the other end abuts against the limiting protrusion 102. In the axial direction of the unlocking bar 5, the side of the limiting protrusion 102 facing away from the compression spring 13 is a certain distance away from the unlocking bar 5. After the spring pushes the unlocking bar 5 to move axially, the side of the limiting protrusion 102 facing away from the compression spring 13 abuts against the unlocking bar 5. At the same time, the support protrusion 41 on the locking pin 4 is vertically aligned with the notch of the hanging hole 31.

[0052] To better understand the arrangement of the rope motor 6, the moving pin seat 14, the fixed pin seat 15, and the lead seat, Figure 14 A simplified illustration shows the arrangement of the aforementioned components on the hanger 2. Figure 14 It can be seen that the hanger 2 is equipped with two rope motors 6. Each long side of the hanger 2 is equipped with an unlocking bar 5, two guide seats 10, two moving pin seats 14 and two fixed pin seats 15. The two guide seats 10 are located at both ends of the unlocking bar 5 to ensure that the unlocking bar 5 is well guided. The four fixed pin seats 15 on the two long sides of the hanger 2 are aligned in pairs along the short side of the hanger 2 so that the rope motor 6 can stably pull the pins 12 on the two long sides of the hanger 2 through the blanket pulling rope 11, so that the pins 12 disengage from the corresponding moving pin seats 14 and fixed pin seats 15.

[0053] like Figure 5 , Figure 15 and Figure 16As shown, the mounting plate 3 is L-shaped. One side wall of the mounting plate 3 is horizontally positioned and abuts or is close to the lower side of the hanger 2, while the other side wall is vertically positioned and extends downward relative to the hanger 2. A pressure plate 18 is fixedly connected to the lower side of the horizontal side wall of each mounting plate 3. The part of the fire blanket 1 corresponding to the pressure plate 18 is sandwiched between the horizontal side wall of the mounting plate 3 and the pressure plate 18. The lower side of the pressure plate 18 abuts against the support protrusion 41 of the locking pin 4. A through hole is provided on the pressure plate 18 for the locking pin 4 to pass through, and the shape of the through hole is the same as the shape of the hanging hole 31 on the mounting plate 3.

[0054] The mounting plate 3 has an integrally formed annular hinge protrusion 32 at the bottom of one end of its vertical sidewall, and a hinge end plate 19 is fixedly connected to the other end. The hinge end plate 19 has an integrally formed annular hinge protrusion 191. The hinge protrusion 32 on the mounting plate 3 abuts against the hinge protrusion 191 on the adjacent hinge end plate 19 and is hinged together by a connecting pin 22. The abutment of the hinge protrusion 32 and the hinge protrusion 191 and the hinged connection by the connecting pin 22 not only facilitates installation but also ensures high reliability of the hinge structure between adjacent mounting plates 3. The side of the vertical side wall of the hanging plate 3 is also fixedly connected to a side plate 20 parallel to it. The bottom of one end of the side plate 20 is integrally formed with an annular hinge protrusion 3 201, and a pad 21 is sandwiched between the end of the side plate 20 and the vertical side wall of the hanging plate 3. The hinge protrusion 1 32 and the adjacent hinge protrusion 3 201 are directly opposite each other. The hinge protrusion 2 191 passes through the hinge protrusion 1 32 and the hinge protrusion 3 201, and the three are hinged together by the connecting pin 22.

[0055] like Figure 17 As shown, this fire extinguishing device also includes a blanket-laying rope 27. Both the blanket-laying rope 27 and the blanket-throwing rope 11 pass through the drive shaft of the rope-winding motor 6. The two ends of the blanket-laying rope 27 are respectively connected to the upper ends of the two swing arms 25.

[0056] The following is a brief introduction to the working principle of this fire extinguishing device:

[0057] When a fire occurs, such as Figure 17 As shown, the winch motor 6 starts, and its drive shaft rotates. Both the blanket-laying pull rope 27 and the blanket-throwing pull rope 11 are wound around the drive shaft. The blanket-laying pull rope 27 pulls the swing arm 25 upward, causing the blanket support plate 23 to swing upward, and the two sides of the fire blanket 1 fall downward and unfold. At this time, although the pin 12 is also gradually pulled out of the moving pin seat 14 and the fixed pin seat 15, the pin 12 needs to move a certain distance before it can completely disengage from the fixed pin seat 15 so that the locking bar can move axially. Therefore, the axial movement of the locking bar is delayed relative to the swing of the swing arm 25, which allows the two sides of the fire blanket 1 to unfold first.

[0058] When the two sides of the fire blanket 1 are unfolded and the pin 12 is completely disengaged from the fixed pin seat 15 and the moving pin seat 14, the compression spring 13 located in the guide seat 10 pushes the unlocking bar 5 to move axially until the limiting protrusion 102 abuts against the side of the unlocking bar 5 facing away from the compression spring 13. At this time, the support protrusion 41 on the locking pin 4 is aligned vertically with the notch of the hanging hole 31. At this time, the hanging plate 3 loses the blocking effect of the locking pin 4, and the fire blanket 1 falls freely, covering the burning car, isolating the air, and achieving the effect of extinguishing the fire.

[0059] Example 2

[0060] This embodiment is basically the same in structure and principle as Embodiment 1, except that the method of axial movement of the unlocking bar 5 and the transmission connection between the unlocking bar 5 and the locking pin 4 are different. Specifically, as follows... Figure 18 As shown, the hanger 2 is equipped with a push rod motor 7 that can drive the unlocking bar 5 to move axially. Each locking pin 4 has a fixedly connected strip-shaped crank 8 at its upper end. The crank 8 is perpendicular to the locking pin 4, and has a strip-shaped hole 81 arranged radially along the locking pin 4. Several hinge pins 9 are fixedly connected to the unlocking bar 5, each corresponding to a slot in the slot 81. When a fire occurs and the fire blanket 1 needs to be thrown down, the push rod motor 7 starts, driving the unlocking bar 5 to move axially. Because the hinge pins 9 fixedly connected to the unlocking bar 5 pass through the slots 81 of the cranks 8 at the upper end of each locking pin 4, the axial movement of the unlocking bar 5 causes the hinge pins 9 to slide relative to each other within the slots 81, thereby causing the crank 8 to rotate around the locking pin 4. The rotation of the crank 8 then causes the locking pin 4 to rotate synchronously. When the locking pin 4 rotates until its supporting protrusion 41 is vertically aligned with the notch of the hanging hole 31, the fire blanket 1 is thrown down.

[0061] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model 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 this utility model or exceeding the scope defined by the appended claims.

[0062] Although this article uses the following terms extensively: 1. fire blanket; 2. hanger; 3. hanging plate; 31. hanging hole; 32. hinge protrusion 1; 4. locking pin; 41. support protrusion; 5. unlocking bar; 51. strip-shaped notch; 6. rope motor; 61. rope hole; 7. push rod motor; 8. crank; 81. strip-shaped hole; 9. hinge post; 10. guide seat; 101. guide groove; 102. limiting protrusion; 11. blanket throwing rope; 12. insert The following are some of the terms used: 13. Pin; 14. Compression spring; 15. Moving pin seat; 16. Fixed pin seat; 17. Gear; 18. Rack; 19. Pressure plate; 10. Hinge end plate; 191. Hinge protrusion two; 20. Side plate; 201. Hinge protrusion three; 21. Pad plate; 22. Connecting pin; 23. Blanket support plate; 24. Connecting plate; 25. Swing arm; 26. Spring top rod; 27. Blanket release rope, etc. However, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A fire extinguishing device, comprising a fire blanket (1) and a rectangular frame-shaped hanger (2), characterized in that, The fire blanket (1) is fixedly connected to two rows of hanging plates (3), and each row of hanging plates (3) is provided with several hanging holes (31) spaced apart; several vertically arranged locking pins (4) are arranged at intervals on the two long sides of the hanger (2), the locking pins (4) are axially fixed and circumferentially rotatably connected to the hanger (2), and the lower end of the locking pin (4) protrudes to the side to form a supporting protrusion (41); the two rows of hanging plates (3) on the fire blanket (1) are respectively set on the lower side of the two long sides of the hanger (2), and the hanging holes (31) and locking pins (4) are paired one-to-one. The fire blanket (1) is unfolded in the middle and located below the hanger (2). The supporting protrusion (41) passes through the corresponding hanging hole (31) and the supporting protrusion (41) and the hanging hole (31) are misaligned by rotating the locking pin (4). Each long side of the hanger (2) is also provided with a long strip-shaped unlocking bar (5) that is connected to the locking pin (4) on the corresponding long side. The unlocking bar (5) can move axially and drive the locking pin (4) to rotate synchronously to the angle position where the supporting protrusion (41) and the hanging hole (31) are aligned.

2. The fire extinguishing device according to claim 1, characterized in that, The hanging plate (3) is L-shaped. One side wall of the hanging plate (3) is horizontally set and abuts or is close to the lower side of the hanger (2). The hanging hole (31) is opened on the horizontally set side wall of the hanging plate (3) and the lower side of the side wall is fixedly connected to the pressure plate (18). The part of the fire blanket (1) corresponding to the pressure plate (18) is sandwiched between the horizontally set side wall of the hanging plate (3) and the pressure plate (18). The lower side of the pressure plate (18) abuts against the support protrusion (41) of the locking pin (4).

3. The fire extinguishing device according to claim 1, characterized in that, Each locking pin (4) has a gear (16) fixedly fitted on its upper end, and the unlocking bar (5) has several racks (17) that mesh with the gears (16) one by one.

4. The fire extinguishing device according to claim 1, characterized in that, The hanger (2) is equipped with a push rod motor (7) that can drive the unlocking bar (5) to move axially. Each locking pin (4) has a strip-shaped crank (8) fixedly connected to its upper end. The crank (8) is perpendicular to the locking pin (4). The crank (8) has a strip-shaped hole (81) arranged radially along the locking pin (4). The unlocking bar (5) is fixedly connected with several hinge pins (9). The several hinge pins (9) are inserted into each strip-shaped hole (81) in a corresponding manner.

5. The fire extinguishing device according to claim 1, 2, or 3, characterized in that, This fire extinguishing device also includes a pin (12), and each unlocking bar (5) is fixedly connected to a moving pin seat (14). The moving pin seat (14) is provided with a fixed pin seat (15) fixedly connected to the hanger (2) on the side. The pin (12) is inserted into the moving pin seat (14) and the fixed pin seat (15). The hanger (2) is also provided with a compression spring (13) that can push the unlocking bar (5) to move axially after the pin (12) is dislodged from the moving pin seat (14) and the fixed pin seat (15).

6. The fire extinguishing device according to claim 5, characterized in that, This fire extinguishing device also includes a blanket throwing rope (11) and a rope winch motor (6) installed on the hanger (2) and capable of winding the blanket throwing rope (11). The drive shaft of the rope winch motor (6) has a rope hole (61) in the radial direction. The blanket throwing rope (11) passes through the rope hole (61), and the two ends of the blanket throwing rope (11) are fixedly connected to the pins (12) on the two long sides of the hanger (2).

7. The fire extinguishing device according to claim 5, characterized in that, Two block-shaped guide seats (10) are provided on each long side of the hanger (2). A strip-shaped guide groove (101) is opened on the lower side of the guide seat (10). A limiting protrusion (102) is formed on one side wall of the guide groove (101). The unlocking strip (5) passes between the limiting protrusion (102) and the other side wall of the guide groove (101). The limiting protrusion (102) and the other side wall of the guide groove (101) are both in contact with the unlocking strip (5).

8. The fire extinguishing device according to claim 7, characterized in that, Two strip-shaped notches (51) are provided on one side of the unlocking bar (5). Two guide seats (10) located on the same side of the hanger (2) correspond one-to-one with the two strip-shaped notches (51) on the unlocking bar (5). The limiting protrusion (102) on the guide seat (10) extends into the corresponding strip-shaped notch (51). Each strip-shaped notch (51) is provided with a compression spring (13) as described above. One end of the compression spring (13) abuts against the unlocking bar (5), and the other end abuts against the limiting protrusion (102).

9. The fire extinguishing device according to claim 8, characterized in that, In the axial direction of the unlocking bar (5), the side of the limiting protrusion (102) facing away from the compression spring (13) is a certain distance away from the unlocking bar (5). After the compression spring pushes the unlocking bar (5) to move axially, the side of the limiting protrusion (102) facing away from the compression spring (13) can abut against the unlocking bar (5). At the same time, the locking pin (4) rotates to an angle position that aligns its supporting protrusion (41) with the hanging hole (31).

10. The fire extinguishing device according to claim 2, characterized in that, The fire blanket (1) has multiple hanging plates (3) arranged in two rows. The other side wall of each hanging plate (3) is vertically set and extends downward relative to the hanger (2). The hanging plate (3) has an annular hinge protrusion (32) integrally formed at the bottom of one end of its vertical side wall, and a hinge end plate (19) is fixedly connected to the other end. The hinge end plate (19) has an annular hinge protrusion (191) integrally formed on it. The hinge protrusion (32) on the hanging plate (3) is close to the hinge protrusion (191) on the adjacent hinge end plate (19) and is hinged by a connecting pin (22).

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