Fire blanket device for eliminating fire of electric vehicle

Abstract

The utility model relates to a fire extinguishing blanket device, especially to a fire extinguishing blanket device for extinguishing fire of electric vehicle, a fire extinguishing blanket device for extinguishing fire of electric vehicle, including support subassembly, set up in the support subassembly top's take -up fire blanket subassembly, the support subassembly includes two support columns that are left and right symmetry sets up, two the top of support column corresponds through 90 degree self -locking hinge and is provided with arc support block, the take -up fire blanket subassembly includes the take -up cylinder that sets up in two arc support block top, the take -up cylinder is provided with the pivot in along the axis line horizontal of it, the left end pivot of pivot is set up on the take -up cylinder inner wall, the right end pivot of pivot extends to the take -up cylinder outside and is connected with the handle, the pivot is around set with fire blanket. The utility model aims at providing a kind of fire extinguishing blanket device for extinguishing fire of electric vehicle, which can be adjusted, is convenient to take up, is more practical.

Description

Technical Field

[0001] This utility model relates to fire blanket devices, and in particular to a fire blanket device for extinguishing fires in electric vehicles. Background Technology

[0002] The battery materials used in new energy vehicles are mostly flammable and reactive metals, which are prone to ignition under high temperatures and collisions. Furthermore, the fires are slow to ignite and difficult to extinguish using traditional methods such as water, sand, or fire extinguishers. Even if extinguished temporarily, the risk of reignition is high. To reduce the environmental impact of vehicle fires, it is necessary to design fire blankets suitable for new energy vehicles for fire suppression, rescue, and repair protection.

[0003] There are many types of flame-retardant and high-temperature resistant fire blankets on the market, but they are usually folded and placed in bags or shells. The process of taking them out is often cumbersome, time-consuming and laborious, which is not conducive to quickly stopping the spread of fire. Moreover, they are not easy to recycle after use. Utility Model Content

[0004] In view of this, the present invention provides a fire blanket device for extinguishing fires in electric vehicles. The purpose is to provide an adjustable, easy-to-deploy, and more practical fire blanket device for extinguishing fires in electric vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fire blanket device for extinguishing electric vehicle fires includes a support assembly and a retractable fire blanket assembly disposed on top of the support assembly. The support assembly includes two symmetrically arranged support columns, with arc-shaped support blocks corresponding to the tops of the two support columns via 90° self-locking hinges. The retractable fire blanket assembly includes a retractable cylinder corresponding to the tops of the two arc-shaped support blocks. A rotating shaft is horizontally arranged along its central axis inside the retractable cylinder. The left end of the rotating shaft is rotatably mounted on the inner wall of the retractable cylinder, and the right end of the rotating shaft extends through to the outside of the retractable cylinder and is connected to a handle. A fire blanket is wound around the rotating shaft, and a fireproof sealing strip is provided at the moving end of the fire blanket. A fire blanket outlet is provided on the front side of the discharge cylinder corresponding to the fireproof sealing strip. A sector gear is provided on the right end of the rotating shaft. A first gear is meshed with the bottom of the sector gear. The first gear is rotatably mounted on the bracket. A ratchet is fixedly provided on the right end of the first gear. A limit plate is provided on the bracket corresponding to the ratchet. A baffle is rotatably mounted inside the limit plate through a connecting shaft. A torsion spring is provided between the bottom of the baffle and the bracket through a fixed shaft. A connecting post is provided on the right end face of the baffle and the ratchet respectively. A limit rod is provided on the right end of the connecting post. The bottom of the limit rod slides downward to the outside of the discharge cylinder and connects to the limit assembly.

[0006] Preferably, the limiting component includes a limiting strip that is slidably connected to the bottom of the limiting rod, and an adjusting rod is integrally formed at the left end of the limiting strip. The top end of the adjusting rod is slidably disposed in a guide groove on the bottom wall of the take-up and release cylinder, and the adjusting rod is connected to the inner wall of the left side of the guide groove by a strong spring.

[0007] Preferably, the device further includes an angle adjustment component, which includes arc-shaped slots corresponding to the two arc-shaped support blocks. Arc-shaped racks are slidably arranged in each of the two arc-shaped slots. Second gears are meshed at the bottom of each of the two arc-shaped racks. Drive shafts are passed through each of the two second gears. The disjoint ends of the two drive shafts extend to the outside of the corresponding arc-shaped support blocks and are slidably connected to an adjustment disc. A circular plate is provided outside the drive shaft between the adjustment disc and the corresponding arc-shaped support block. Two positioning blocks are radially symmetrically arranged at the inner end of the adjustment disc. Multiple positioning slots are formed in a circular array corresponding to the two positioning blocks on the circular plate.

[0008] Preferably, the bottom of the limiting rod is provided with an upper limiting groove and a lower limiting groove corresponding to the limiting strip.

[0009] Preferably, the fireproof sealing strip has two fireproof strips arranged symmetrically on the front side, and each of the two fireproof strips has a pull ring at its lower part.

[0010] Preferably, a transport ring is rotatably provided on both the left and right outer walls of the take-up and take-down cylinder.

[0011] Preferably, magnetic blocks are provided at the bottom of the opposite sides of the two support columns.

[0012] Preferably, the outer walls of the take-up and take-down cylinders are made of ferromagnetic material.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model includes a support assembly and a fire blanket retraction assembly disposed on top of the support assembly. The support assembly provides support and space for the entire device, while the fire blanket retraction assembly assists in the retraction and deployment of the fire blanket. Compared to previous fire blanket devices, this device assists in retraction and deployment, extending its service life to some extent. The support assembly, through the combination of a support column, a 90° self-locking hinge, and an arc-shaped support block, allows for quick unfolding or folding of the support column by adjusting the 90° self-locking hinge. Simultaneously, folding the support column effectively reduces the space occupied by the entire fire blanket device, thus facilitating its retraction and deployment. The fire blanket retraction assembly, through the combination of a retraction cylinder, a rotating shaft, a handle, a fire blanket, a fireproof sealing strip, a fire blanket outlet, a sector gear, a first gear, a bracket, a ratchet, a limiting plate, a connecting shaft, a baffle, a torsion spring, a connecting column, a limiting rod, and a limiting component, allows for retraction and deployment by releasing the limiting strip. The limiting rod restricts movement (i.e., pulling the adjusting rod to the left causes the limiting strip to slide out of the lower limiting groove), and then pulling the limiting rod downwards causes the limiting rod to disengage the connecting post and baffle from the ratchet's tooth groove. The limiting strip then slides into the upper limiting groove to restrict the limiting rod. At this point, the handle can be turned in the opposite direction, and the pull ring can be pulled simultaneously to release the fire blanket. When it is necessary to retract the fire blanket, the limiting strip can slide out of the upper limiting groove, and then, under the torsional force of the torsion spring, the baffle resets and engages with the ratchet's tooth groove, simultaneously driving the connecting post. The column and limit rod are reset, and then the limit strip slides into the lower limit groove to restrict the limit rod. This can prevent the rotating shaft from rotating in the opposite direction due to the weight of the fire blanket to a certain extent. When rolling up the fire blanket, the handle can be turned clockwise to drive the rotating shaft and the sector gear to rotate synchronously. The sector gear meshes and drives the first gear to rotate. The whole process is simple in principle and easy to operate. Moreover, the torque can be amplified by the 1:3 reduction ratio, so that the rotating shaft can roll up the fire blanket at a higher speed, thereby reducing the manual operation force to a certain extent.

[0014] 2. This utility model's limiting assembly, through the combined arrangement of a limiting strip, adjusting rod, guide groove, and powerful spring, allows for the release of the limiting strip's restriction on the limiting rod (i.e., pulling the adjusting rod to the left to allow the limiting strip to slide out of the lower limiting groove), followed by pulling the limiting rod downwards. This causes the limiting rod to disengage the connecting post and baffle from the ratchet's tooth groove, allowing the limiting strip to slide into the upper limiting groove to restrict the limiting rod. At this point, the handle can be rotated in the opposite direction, and the pull ring can be pulled simultaneously to release the fire blanket. When it is necessary to retract the fire blanket... During winding, the limiting bar can slide out of the upper limiting groove, and then the torsion force of the torsion spring drives the baffle to reset and engage with the ratchet tooth groove. At the same time, the connecting column and the limiting rod can be reset simultaneously, and then the limiting bar slides into the lower limiting groove to restrict the limiting rod. The adjusting rod slides in the guide groove on the bottom wall of the take-up and take-down cylinder to ensure that the limiting bar always moves in a straight line, avoiding the failure of the limiting due to deviation, and allowing the operator to intuitively judge the locking and unlocking of the device by the engaging objects of the limiting bar (upper limiting groove and lower limiting groove).

[0015] 3. This utility model also includes an angle adjustment component. The angle adjustment component is formed by combining an arc-shaped slot, an arc-shaped rack, a second gear, a drive shaft, an adjustment disc, a circular plate, a positioning block, and a positioning groove. By simultaneously pulling the two adjustment discs outward, the positioning blocks on the corresponding sides are disengaged from the positioning grooves. Then, the adjustment discs are rotated, causing the drive shaft and the second gear to rotate synchronously. The second gear engages and drives the arc-shaped rack to slide along the arc-shaped slot, thereby causing the arc-shaped rack to drive the take-up and release tube to achieve angle adjustment. After the angle of the take-up and release tube is adjusted, the adjustment discs are pushed inward, causing the two positioning blocks on the adjustment discs to engage with the two positioning grooves of the corresponding angle, thereby locking the angle of the take-up and release tube. The whole process is simple in principle and easy to operate, and can be adapted to different locations such as the bottom battery of a car and the side battery of an SUV, making it more practical.

[0016] 4. The bottom of the limiting rod of this utility model is provided with an upper limit groove and a lower limit groove corresponding to the limiting strip. The upper limit groove corresponds to the fire blanket unfolding and unlocking state, and the lower limit groove corresponds to the fire blanket retracting and locking state. This setting allows the operator to intuitively judge the locking and unlocking of the device by the engaging objects of the limiting strip (upper limit groove and lower limit groove), which is more intuitive and convenient.

[0017] 5. The front side of the fireproof sealing strip of this utility model is symmetrically provided with two fireproof strips, and the lower part of each fireproof strip is provided with a pull ring. This arrangement allows the user to pull the pull ring to move and unfold the fireproof strip, fireproof sealing strip and fire blanket simultaneously. At the same time, the fireproof strips make the process of covering the fire blanket on the fire point safer.

[0018] 6. The left and right outer walls of the receiving and discharging cylinder of this utility model are equipped with corresponding transport rings, which facilitates the user to quickly transport the entire device.

[0019] 7. The bottom of the two support columns on opposite sides of this utility model is provided with magnetic blocks. This arrangement effectively ensures that the support columns can be firmly fixed by the magnetic attraction between the magnetic blocks and the outer wall of the storage tube when folding and unfolding.

[0020] 8. The outer wall of the retractable tube of this utility model is made of ferromagnetic material. This design ensures effective fixation between the magnetic block and the outer wall of the retractable tube, thereby ensuring that the support column can be effectively fixed when folded. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a front view of the support rod of this utility model when it is extended or retracted; Figure 3 This is a schematic diagram of the internal structure of the receiving and dispensing tube of this utility model; Figure 4 This is a top view of the internal structure of the fire blanket of this utility model when it is unfolded. Figure 5 This is a schematic diagram of the left-side structure of this utility model; Figure 6 This is a schematic diagram of the right-side cross-sectional structure of the retractable tube of this utility model; Figure 7 This is a schematic diagram of the installation structure of the ratchet of this utility model; Figure 8 This is a schematic diagram of the limiting component of this utility model; Figure 9 This is a schematic diagram of the installation structure of the adjusting disc of this utility model; Figure 10 for Figure 3 A magnified structural diagram of part A in the middle; Figure 11 for Figure 5 A magnified structural diagram of part B in the middle section; Figure 12 for Figure 7 A magnified structural diagram of section C.

[0022] Reference numerals: 1: Support assembly, 2: Fire blanket retraction assembly, 3: Support column, 4: 90° self-locking hinge, 5: Arc-shaped support block, 6: Retraction cylinder, 7: Rotating shaft, 8: Handle, 9: Fire blanket, 10: Fireproof sealing strip, 11: Fire blanket outlet, 12: Sector gear, 13: First gear, 14: Bracket, 15: Ratchet, 16: Limiting plate, 17: Connecting shaft, 18: Baffle, 19: Fixed shaft, 20: Torsion spring, 21: Connecting column, 22: Limiting rod, 23: Limiting components, 24: Limiting strip, 25: Adjusting rod, 26: Guide groove, 27: Strong spring, 28: Angle adjustment component, 29: Arc-shaped slot, 30: Arc-shaped rack, 31: Second gear, 32: Drive shaft, 33: Adjusting disc, 34: Circular plate, 35: Positioning block, 36: Positioning groove, 37: Upper limit groove, 38: Lower limit groove, 39: Fireproof strip, 40: Pull ring, 41: Transport ring, 42: Magnetic block, 43: Slider, 44: Slide groove, 45: Viewing window. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the device includes a support assembly 1 and a fire blanket retraction assembly 2 located on top of the support assembly 1. This assembly provides support and space for the entire device via the support assembly 1. The fire blanket retraction assembly 2 assists in the retraction and deployment of the fire blanket 9 within it. Compared to previous fire blanket devices, this device assists in retraction and deployment, extending its service life to some extent. The support assembly 1 includes two symmetrically arranged support columns 3. The tops of the two support columns 3 are respectively equipped with arc-shaped support blocks 5 via 90° self-locking hinges 4. The 90° self-locking hinges 4 are 90° self-locking hinges with brakes, and the unlocking force of the 90° self-locking hinges 4 is 30-50N. The user can easily open the 90° self-locking hinge 4 to 90° or fold it to 0° by simply pushing or pulling the brake button. The specific operation and support effect of the 90° self-locking hinge 4 are as follows: [180° fold, 90° fold, 0° self-locking hinge, stainless steel coffee table furniture hardware manufacturer direct supply (1688.com)]. The switch is the brake button mentioned in the instruction manual. Its specific structural composition can be referred to in the folding joint structure of the published utility model patent: Publication (announcement) number CN216875440U "A self-locking folding joint structure and wall table". This setting allows for rapid adjustment of the support column 3 by adjusting the 90° self-locking hinge 4. The fire blanket can be unfolded or folded, and the support column 3 can effectively reduce the space occupied by the entire fire blanket device when folded, thus facilitating the unfolding and folding of the entire fire blanket device to a certain extent. The unfolding and folding fire blanket assembly 2 includes unfolding and folding cylinders 6 corresponding to the top of the two arc-shaped support blocks 5. A rotating shaft 7 is horizontally arranged along the central axis inside the unfolding and folding cylinder 6. The left end of the rotating shaft 7 is rotatably set on the inner wall of the unfolding and folding cylinder 6, and the right end of the rotating shaft 7 extends through to the outside of the unfolding and folding cylinder 6 and is connected to a handle 8. A fire blanket 9 is wound around the rotating shaft 7. The fire blanket 9 has a three-layer composite structure: the inner layer is a modified basalt fiber cloth containing 20% ​​nano aluminum hydroxide and 5% montmorillonite (1.5mm thick), the middle layer is embedded with stainless steel micro The microchannel consists of a phase change material layer (microchannel diameter 0.8mm, spacing 5mm, phase change material is paraffin) and an outer layer of glass fiber + flame-retardant silicone coating (silicone thickness 0.3mm, oxygen index ≥32%). When an electric vehicle battery catches fire, the nano-aluminum hydroxide (20% content) in the inner layer of modified basalt fiber cloth decomposes at a high temperature of 200-300℃, absorbing the heat released by the battery's thermal runaway. Montmorillonite (5% content) adsorbs harmful gases such as CO and HF produced by the decomposition of the electrolyte through the interlayer structure, blocking the thermal runaway chain reaction. The middle layer of paraffin phase change material (phase change temperature 70-80℃) melts when heated, absorbing a large amount of latent heat. At the same time, the stainless steel microchannels (diameter 0.8mm, spacing 5mm, phase change material is paraffin) are also present.An air convection channel (8mm wide, 5mm spaced) is formed to conduct heat from the battery surface to the outside, preventing temperature buildup after covering. The outer layer of glass fiber + flame-retardant silicone coating (oxygen index ≥32%) can withstand temperatures above 800℃, preventing external flames from entering the battery compartment and preventing internal flames from overflowing and igniting the surrounding environment. The moving end of the fire blanket 9 is equipped with a fireproof sealing strip 10, which is made of flame-retardant rubber. The front side of the retractable cylinder 6 has a fire blanket outlet 11 corresponding to the fireproof sealing strip 10. The width of the fire blanket outlet 11 is wider than the width of the fireproof sealing strip 10. The shaft 7 is 2mm larger than the pivot. A sector gear 12 is provided on the right end of the pivot. A first gear 13 is correspondingly meshed at the bottom of the sector gear 12. The sector gear 12 and the first gear 13 have the same module (2 in this embodiment) and a gear ratio of 3:1, which makes the sector gear 12 and the first gear 13 form a 1:3 reduction ratio, so that the user can operate with less effort. The first gear 13 is rotatably mounted on the bracket 14 through a bearing (not shown in the figure). A ratchet 15 (20 teeth, module 1) is fixedly provided on the right end of the first gear 13 through a flat key (not shown in the figure).5) A limiting plate 16 is provided on the bracket 14 corresponding to the ratchet 15. The limiting plate 16 is welded to the bracket 14. A baffle 18 is rotatably provided inside the limiting plate 16 via a connecting shaft 17. A torsion spring 20 (torque 2N*m) is provided between the bottom of the baffle 18 and the bracket 14 via a fixed shaft 19. The fixed shaft 19 is fixedly provided on the limiting plate 16. A connecting post 21 is provided on the right end face of the baffle 18 near the ratchet 15. The connecting post 21 and the baffle 18 are integrally formed. A limiting rod 22 is provided at the right end of the connecting post 21. The right end of the connecting post 21 is fixedly connected to the limiting rod 22. The bottom of the limiting rod 22 slides downward to the outside of the take-up and dispensing tube 6 and is connected to the limiting component 23. This setting can be achieved by releasing the limiting bar 24 from the limiting rod 22 (i.e., pulling the adjusting rod 25 to the left to make the limiting bar 24 slide out of the lower limiting groove 38), and then pulling the limiting rod 22 downward, thereby causing the limiting rod 22 to drive the connecting post 21 and the baffle 18 to disengage from the ratchet 15. The toothed groove allows the limiting strip 24 to slide into the upper limiting groove 37 to restrict the limiting rod 22. At this time, the handle 8 can be rotated in the opposite direction and the pull ring 40 can be pulled simultaneously to release the fire blanket 9. When it is necessary to retract the fire blanket 9, the limiting strip 24 can slide out of the upper limiting groove 37, and then the torsion force of the torsion spring 20 drives the baffle 18 to reset and engage with the toothed groove of the ratchet 15. At the same time, the connecting column 21 and the limiting rod 22 can be reset simultaneously, and then the limiting strip 24 slides into the lower limiting groove 38 to restrict the limiting rod 22. The limiting rod 22 restricts the rotation of the shaft 7 due to the weight of the fire blanket 9, preventing it from rotating in the opposite direction. When winding the fire blanket 9, the handle 8 can be turned clockwise to drive the shaft 7 and the sector gear 12 to rotate synchronously. The sector gear 12 meshes with and drives the first gear 13 to rotate. The entire process is simple in principle and easy to operate. Furthermore, the 1:3 reduction ratio amplifies the torque, allowing the shaft 7 to wind the fire blanket 9 at a higher speed, thus reducing the manual operation effort to some extent.

[0027] like Figure 3 , Figure 8 and Figure 10As shown, the limiting assembly 23 includes a limiting strip 24 (made of 45# steel, 80mm in length) that is slidably connected to the bottom of the limiting rod 22. An adjusting rod 25 (8mm in diameter, 60mm in length) is integrally formed at the left end of the limiting strip 24. The top end of the adjusting rod 25 is slidably disposed in a guide groove 26 (50mm in length, 9mm in width) on the bottom wall of the take-up cylinder 6. The adjusting rod 25 and the inner wall of the left side of the guide groove 26 are connected by a strong spring 27 (6mm in diameter, 40mm in free length, 8N / mm stiffness). This arrangement can be achieved by releasing the limiting strip 24 from the limiting rod 22 (i.e., pulling the adjusting rod 25 to the left to make the limiting strip 24 slide out of the lower limiting groove 38), and then pulling the limiting rod 22 down, thereby causing the limiting rod 22 to drive the connecting post 21 and the baffle 18 to disengage from the teeth of the ratchet 15. The limit bar 24 slides into the upper limit groove 37 to restrict the limit rod 22. At this time, the handle 8 can be rotated in the opposite direction and the pull ring 40 can be pulled to release the fire blanket 9. When it is necessary to rewind the fire blanket 9, the limit bar 24 can slide out of the upper limit groove 37. Then, under the torsional force of the torsion spring 20, the baffle 18 is reset and locked into the tooth groove of the ratchet 15. At the same time, the connecting column 21 and the limit rod 22 can be reset simultaneously. Then, the limit bar 24 slides into the lower limit groove 38 to restrict the limit rod 22. The adjusting rod 25 slides in the guide groove 26 on the bottom wall of the take-up and release cylinder 6 to ensure that the limit bar 24 always moves in a straight line, avoids the failure of the limit due to deviation, and allows the operator to intuitively judge the locking and unlocking of the device through the locking objects of the limit bar 24 (upper limit groove 37, lower limit groove 38).

[0028] like Figure 1 , Figure 2 , Figure 5 , Figure 9 and Figure 11As shown, it also includes an angle adjustment component 28, which includes arc-shaped slots 29 (90° arc, 25mm width) corresponding to the two arc-shaped support blocks 5. Arc-shaped racks 30 (9 teeth, module 2) are slidably arranged in each of the two arc-shaped slots 29. Second gears 31 (9 teeth, module 2) are meshed with the bottom of each of the two arc-shaped racks 30. A viewing window 45 is provided on the opposite side of each of the two arc-shaped support blocks 5 at the meshing point of the corresponding arc-shaped rack 30 and second gear 31. A drive shaft 32 (12mm in diameter, 50mm in length) is provided through each of the two drive shafts 31. The disjoint ends of the two drive shafts 32 extend to the outside of the corresponding arc-shaped support block 5 and are slidably connected to an adjusting disc 33 (40mm in diameter, 5mm in thickness). Multiple sliders 43 are integrally formed on the inner side of the adjusting disc 33. Multiple grooves 44 are provided on the outer periphery of the drive shafts 32 corresponding to the multiple sliders 43. A circular plate 34 (30mm in diameter, 3mm in thickness) is provided outside the drive shaft 32 between the adjusting disc 33 and the corresponding arc-shaped support block 5. Plate 34 is fixedly mounted on the corresponding arc-shaped support block 5. Two positioning blocks 35 (5mm high, 8mm wide) are radially symmetrically arranged at the inner end of the adjusting disc 33. Multiple positioning grooves 36 are formed in a circular array on the disc 34 corresponding to the two positioning blocks 35 (in this embodiment, there are 8 positioning grooves 36 arranged in a circular array, with a groove depth of 5mm and a width of 9mm). This arrangement allows the positioning blocks 35 on the corresponding side to disengage from the positioning grooves 36 by simultaneously pulling the two adjusting discs 33 outwards, and then rotating the adjusting disc 33 to move it... The drive shaft 32 and the second gear 31 rotate synchronously. The second gear 31 meshes with and drives the arc-shaped rack 30 to slide along the arc-shaped slot 29, thereby causing the arc-shaped rack 30 to drive the take-up and release tube 6 to achieve angle adjustment. After the angle of the take-up and release tube 6 is adjusted, the adjustment disc 33 can be pushed inward to make the two positioning blocks 35 on the adjustment disc 33 engage in the two positioning slots 36 of the corresponding angle, thereby locking the angle of the take-up and release tube 6. The whole process is simple in principle and easy to operate. It can be adapted to different positions such as the bottom battery of a car and the side battery of an SUV, making it more practical.

[0029] like Figure 3 , Figure 8 and Figure 10 As shown, the bottom of the limiting rod 22 is provided with an upper limiting groove 37 (groove depth 3mm, width 9mm) and a lower limiting groove 38 (groove depth 3mm, width 9mm) corresponding to the limiting strip 24. The upper limiting groove 37 corresponds to the unfolded and unlocked state of the fire blanket 9, and the lower limiting groove 38 corresponds to the rolled-up and locked state of the fire blanket 9. This setting allows the operator to intuitively judge the locking and unlocking of the device through the engaging objects of the limiting strip 24 (upper limiting groove 37, lower limiting groove 38), which is more intuitive and convenient.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, two fireproof strips 39 are symmetrically arranged on the front side of the fireproof sealing strip 10. Each of the two fireproof strips 39 has a pull ring 40 at its lower part. This arrangement allows the user to pull the pull ring 40 to simultaneously move and unfold the fireproof strips 39, the fireproof sealing strip 10, and the fire blanket 9. At the same time, the fireproof strips 39 make it safer for the user to cover the fire blanket 9 on the fire point.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 11 As shown, a transport ring 41 is rotatably installed on the outer walls of both the left and right sides of the receiving and discharging cylinder 6, which facilitates the user's quick transport of the entire device.

[0032] like Figure 1 and Figure 2 As shown, magnetic blocks 42 are provided at the bottom of the opposite sides of the two support columns 3. This arrangement effectively ensures that the support columns 3 can be firmly fixed by the magnetic attraction between the magnetic blocks 42 and the outer wall of the storage tube 6 when folding and unfolding.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 11 As shown, the outer wall of the take-up and take-down tube 6 is made of ferromagnetic material. This design ensures effective fixation between the magnetic block 42 and the outer wall of the take-up and take-down tube 6, thereby ensuring that the support column 3 can be effectively fixed when folded.

[0034] The specific operating principle is as follows: When using this fire blanket device, the user can quickly move the entire device to the vicinity of the electric vehicle fire by grasping the carrying rings on both sides of the retractable tube. Then, by pushing and pulling the brake button, the 90° self-locking hinge is adjusted from 90° to 0°, that is, the magnetic block is separated from the outer wall of the retractable tube, adjusting the support column from the folded state to the vertically open state. Then, the entire fire blanket device is placed steadily on the ground. By simultaneously pulling the two adjusting discs outward, the corresponding positioning blocks on the corresponding sides are disengaged from the positioning slots. Then, the adjusting discs are rotated, causing the drive shaft and the second gear to rotate synchronously. The second gear engages and drives the arc-shaped rack to slide along the arc-shaped slot, thereby causing the arc-shaped rack to drive the retractable tube to adjust the angle. After the angle of the retractable tube is adjusted, it can be pushed inward. Adjust the disc so that the two positioning blocks on the disc engage with the corresponding positioning slots, thereby locking the angle of the retractable tube. This completes one angle adjustment of the retractable tube. Then, release the limiting bar from the limiting rod (i.e., pull the adjusting rod to the left to slide the limiting bar out of the lower limiting slot), and then pull the limiting rod downwards. This causes the limiting rod to disengage the connecting column and baffle from the ratchet's tooth groove, allowing the limiting bar to slide into the upper limiting slot to restrict the limiting rod. At this point, the handle can be turned in the opposite direction, and the pull ring can be pulled simultaneously to move the fireproof strip and fireproof sealing strip outwards. Finally, the fire blanket moves and unfolds, gradually covering the fire point of the electric vehicle. Then, the nano-aluminum hydroxide (20%) in the inner layer of the modified basalt fiber cloth of the fire blanket... The montmorillonite (5% content) decomposes at 200-300℃, absorbing the heat released by the battery's thermal runaway. Montmorillonite adsorbs harmful gases such as CO and HF produced by electrolyte decomposition through its interlayer structure, blocking the thermal runaway chain reaction. The middle layer of paraffin phase change material (phase change temperature 70-80℃) melts upon heating, absorbing a large amount of latent heat. Simultaneously, stainless steel microchannels (0.8mm diameter, 5mm spacing) form air convection channels, dissipating heat from the battery surface to the outside, preventing temperature buildup after covering. The outer layer of glass fiber + flame-retardant silicone coating (oxygen index ≥32%) can withstand temperatures above 800℃, preventing external flames from entering the battery compartment and preventing internal flames from igniting the surrounding environment. After use (including simple cleaning of the fire blanket surface by the user)... (The cleaning process uses common cleaning methods found in existing technologies and is not considered a protected point in this technical solution, so it will not be elaborated on here.) When retracting or extending the fire blanket, the limiting strip can slide out of the upper limiting groove, and then, under the torsional force of the torsion spring, the baffle is reset and locked into the ratchet tooth groove. At the same time, the connecting column and the limiting rod are reset simultaneously, and then the limiting strip slides into the lower limiting groove to restrict the limiting rod. This can prevent the rotating shaft from rotating in the opposite direction due to the weight of the fire blanket to a certain extent. Then, by turning the handle clockwise, the rotating shaft and the sector gear can be rotated synchronously. The sector gear meshes and drives the first gear to rotate, thereby retracting the fire blanket until the fireproof sealing strip enters the fire blanket outlet and seals it. This completes the retraction or extension of the fire blanket and the sealing of the retraction cylinder.

[0035] The electrical components mentioned in this article can all be connected to an external main controller and 220V AC mains power via a transformer. The main controller can be a conventional known device such as a computer that plays a control role. The conventional known device such as a computer that plays a control role can receive various data signals detected by this device in real time. The electrical components provided by this utility model are only used according to the structural characteristics of the product in this technical solution. The product will be adjusted and modified after purchase to better match and conform to the technical solution of this utility model. It is an optimal application of this technical solution. The product model can be replaced and modified according to the required technical parameters. It is well known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding usage effect through the technical solution provided by this utility model.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] In addition, during the use of this embodiment, the operator should perform regular maintenance, cleaning and upkeep, and replace each component regularly according to its service life to ensure that the device is always kept in the best working condition.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fire blanket device for extinguishing fires in electric vehicles, characterized in that, Includes a support assembly and a fire blanket retraction assembly disposed on top of the support assembly; The support assembly includes two support columns arranged symmetrically on the left and right, and the tops of the two support columns are respectively provided with arc-shaped support blocks through 90° self-locking hinges; The fire blanket retraction assembly includes retraction cylinders correspondingly disposed on the tops of the two arc-shaped support blocks. A rotating shaft is horizontally arranged along its central axis inside each cylinder. The left end of the rotating shaft is rotatably mounted on the inner wall of the cylinder, and the right end extends through to the outside of the cylinder and is connected to a handle. A fire blanket is wound around the rotating shaft. A fireproof sealing strip is provided at the moving end of the fire blanket. A fire blanket outlet is provided on the front side of the cylinder corresponding to the fireproof sealing strip. A sector gear is provided at the right end of the rotating shaft, with the bottom of the sector gear facing... A first gear is provided for meshing, and the first gear is rotatably mounted on the bracket. A ratchet is fixedly mounted on the right end of the first gear. A limit plate is provided on the bracket corresponding to the ratchet. A baffle is rotatably mounted inside the limit plate via a connecting shaft. A torsion spring is provided between the bottom of the baffle and the bracket via a fixed shaft. A connecting post is provided on the right end face of the baffle and the ratchet respectively. A limit rod is provided on the right end of the connecting post. The bottom of the limit rod slides downward to the outside of the take-up and release tube and connects to the limit assembly.

2. The fire blanket device for extinguishing electric vehicle fires according to claim 1, characterized in that, The limiting component includes a limiting strip that is slidably connected to the bottom of the limiting rod. An adjusting rod is integrally formed at the left end of the limiting strip. The top end of the adjusting rod is slidably disposed in a guide groove on the bottom wall of the take-up and release cylinder. The adjusting rod is connected to the inner wall of the left side of the guide groove by a strong spring.

3. The fire blanket device for extinguishing electric vehicle fires according to claim 1, characterized in that, It also includes an angle adjustment component, which includes arc-shaped slots corresponding to the two arc-shaped support blocks. Arc-shaped racks are slidably arranged in each of the two arc-shaped slots. Second gears are meshed at the bottom of each of the two arc-shaped racks. Drive shafts are passed through each of the two second gears. The disjoint ends of the two drive shafts extend to the outside of the corresponding arc-shaped support blocks and are slidably connected to an adjustment disc. A circular plate is arranged outside the drive shaft between the adjustment disc and the corresponding arc-shaped support block. Two positioning blocks are arranged radially symmetrically at the inner end of the adjustment disc. Multiple positioning slots are arranged in a circular array corresponding to the two positioning blocks on the circular plate.

4. A fire blanket device for extinguishing fires in electric vehicles according to claim 2, characterized in that, The bottom of the limiting rod is provided with an upper limiting groove and a lower limiting groove corresponding to the limiting strip.

5. A fire blanket device for extinguishing fires in electric vehicles according to claim 1, characterized in that, The fireproof sealing strip has two fireproof strips arranged symmetrically on the front side, and each of the two fireproof strips has a pull ring at the bottom.

6. A fire blanket device for extinguishing fires in electric vehicles according to claim 1, characterized in that, The outer walls on both the left and right sides of the take-up and take-down cylinder are equipped with corresponding transport rings that can rotate.

7. A fire blanket device for extinguishing fires in electric vehicles according to claim 1, characterized in that, Magnetic blocks are provided at the bottom of the opposite sides of the two support columns.

8. A fire blanket device for extinguishing fires in electric vehicles according to claim 1, characterized in that, The outer walls of the take-up and take-down cylinders are all made of ferromagnetic material.

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