Movable spark splashing prevention device for fire operation

Abstract

The invention discloses a movable spark splashing prevention device for fire operation. The technical problem that all-directional coverage cannot be achieved in the prior art is solved. The device comprises a conical fireproof cover, an angle adjusting assembly, a collecting tank and at least one auxiliary fireproof cover. The conical fireproof cover comprises a flaring end and a necking end. The angle adjusting assembly comprises at least three adjusting mechanisms, and each adjusting mechanism comprises a telescopic supporting rod, a connecting block and a fixing block. The telescopic supporting rod is connected with the conical fireproof cover through the connecting block. The fixing block is used for fixing the angle between the telescopic supporting rod and the conical fireproof cover. And the collecting tank is mounted at the necking end of the conical fireproof cover. The auxiliary fireproof covers and the conical fireproof covers are arranged at intervals. According to the movable spark splashing prevention device for fire operation, the height is independently adjusted through the telescopic supporting rod, so that the conical fireproof cover can flexibly adapt to the movable spark splashing prevention device for fire operation with different heights or complex terrains, and it is ensured that a protection face covers an operation area all the time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of preventing spark flying, and particularly relates to a mobile spark flying prevention device for hot work. BACKGROUND

[0002] High-altitude hot work is widely used in industrial production, but the working environment is complex and the risk is high. The temperature of sparks generated during the hot work process is extremely high (1300-1500℃), which may fly to the flammable material or explosive gas pipeline below, causing fire or explosion accidents. In the prior art, although protective measures such as fire receiving basin and fire receiving plate have been taken, there are problems such as limited protection range and inability to cover all directions, which makes it difficult to effectively prevent spark flying. SUMMARY

[0003] To solve the above technical problems, the application discloses a mobile spark flying prevention device for hot work.

[0004] The technical scheme adopted to achieve the purpose of the application is that the application discloses a mobile spark flying prevention device for hot work, which comprises:

[0005] A conical fireproof cover comprising an expanded end and a contracted end;

[0006] An angle adjusting assembly comprising at least three sets of adjusting mechanisms, each set of the adjusting mechanisms comprising an extension support rod, a connecting block and a fixing block, each of the extension support rods being arranged along the circumference of the conical fireproof cover, the extension support rod being connected to the conical fireproof cover through the connecting block, and the fixing block being used for fixing the angle between the extension support rod and the conical fireproof cover;

[0007] A collecting groove installed at the contracted end of the conical fireproof cover; and

[0008] At least one auxiliary fireproof cover arranged at intervals with the conical fireproof cover.

[0009] In some embodiments, the extension support rod comprises a first rod, a second rod and a telescopic buckle, the top of the first rod is connected to the conical fireproof cover, the first rod and the second rod are slidingly connected, and the telescopic buckle is connected to one of the first rod and the second rod.

[0010] When the telescopic buckle is closed, the positions of the first rod and the second rod are fixed.

[0011] In some embodiments, one end of the second rod away from the first rod is provided with a universal wheel.

[0012] In some embodiments, the conical fireproof cover is made of fireproof cloth or high-temperature resistant metal mesh.

[0013] In some embodiments, a support structure is arranged in the conical fireproof cover, and the support structure is used to support the conical fireproof cover.

[0014] In some embodiments, the support structure comprises a first connecting member, a second connecting member, and at least three third connecting members. The first connecting member is annular along the circumference of the flared end. The second connecting member is annular along the circumference of the tapered end, and the second connecting member is connected with the collecting groove. One end of the third connecting member is connected with the first connecting member, and the other end of the third connecting member is connected with the second connecting member. Each of the third connecting members is arranged at intervals along the circumference of the conical fireproof cover.

[0015] In some embodiments, the number of the third connecting members is equal to the number of the telescopic supporting rods. Each of the third connecting members is arranged in one-to-one correspondence with each of the telescopic supporting rods, and the third connecting members are connected with the telescopic supporting rods.

[0016] In some embodiments, the third connecting members are connected with the telescopic supporting rods through the connecting blocks. The connecting blocks are universal joints, and the fixing blocks are arranged between the third connecting members and the telescopic supporting rods.

[0017] In some embodiments, the telescopic supporting rods are arranged as four, and the third connecting members are also arranged as four.

[0018] In some embodiments, the first connecting member comprises a plurality of magnetic connecting strips. The plurality of magnetic connecting strips are sequentially connected in a ring shape with the first ends of adjacent magnetic connecting strips being magnetically connected.

[0019] According to the above technical solution, the mobile spark flying prevention device for hot work operation disclosed in the present application comprises a conical fireproof cover, an angle adjusting assembly, a collecting groove, and at least one auxiliary fireproof cover. The conical fireproof cover comprises a flared end and a tapered end. The angle adjusting assembly comprises at least three groups of adjusting mechanisms. Each group of adjusting mechanisms comprises a telescopic supporting rod, a connecting block, and a fixing block. Each of the telescopic supporting rods is arranged at intervals along the circumference of the conical fireproof cover, and the telescopic supporting rods are connected with the conical fireproof cover through the connecting blocks. The fixing blocks are used to fix the angle between the telescopic supporting rods and the conical fireproof cover. The collecting groove is installed at the tapered end of the conical fireproof cover. The auxiliary fireproof cover is arranged at intervals with the conical fireproof cover.

[0020] The mobile fire flash flying device for fire operation disclosed in the application can independently adjust the height through the telescopic supporting rod, so that the conical fireproof cover can flexibly adapt to the mobile fire flash flying device for fire operation of different heights or complex terrains (such as sloping land, obstacles or inclined surfaces, etc.), and ensure that the protection surface always covers the operation area. The conical structure guides the sparks to the center, cooperates with the collecting groove to realize centralized recovery, and reduces the risk of spark flying to the surrounding environment. The auxiliary fireproof cover can independently adjust the height or angle, cooperates with the conical fireproof cover, and covers a wider protection area. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the person skilled in the art to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Figure 1 FIG. 1 is a schematic view of a mobile fire flash flying device for fire operation in one or more embodiments of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 100, conical fireproof cover; 110, supporting structure; 111, first connecting piece; 112, second connecting piece; 113, third connecting piece; 200, angle adjusting assembly; 210, telescopic supporting rod; 211, first rod; 212, second rod; 213, telescopic buckle; 220, connecting block; 230, fixed block; 240, universal wheel; 300, collecting groove; 400, auxiliary fireproof cover; 410, magnetic annular connecting strip. DETAILED DESCRIPTION

[0025] In order to make the person skilled in the art to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the present application.

[0026] Moreover, the reference numerals and / or the reference letters in the various examples can be repeated in different instances in this application for the sake of simplicity and clarity and do not indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific process and material examples are provided in this application, but it will be apparent those skilled in the art that other processes and / or materials can be used.

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] The mobile spark flying prevention device for hot work operation disclosed by the embodiments of the present application can solve the technical problem that the prior art cannot cover all aspects, thereby preventing spark flying, and reducing the risk of fire or explosion accidents.

[0029] The technical solutions of the present application will be described in detail below through specific embodiments:

[0030] Referring to Figure 1 The mobile spark flying prevention device for hot work operation disclosed by the embodiments of the present application includes a conical fireproof cover 100, an angle adjusting assembly 200, a collecting groove 300, and at least one auxiliary fireproof cover 400. The conical fireproof cover 100 includes an expanding end and a narrowing end. The angle adjusting assembly 200 includes at least three sets of adjusting mechanisms, each of which includes an extension support rod 210, a connecting block 220, and a fixing block 230. The extension support rods 210 are arranged along the circumference of the conical fireproof cover 100 at intervals, and the extension support rods 210 are connected to the conical fireproof cover 100 through the connecting blocks 220. The fixing blocks 230 are used to fix the angle between the extension support rods 210 and the conical fireproof cover 100. The collecting groove 300 is installed at the narrowing end of the conical fireproof cover 100. The auxiliary fireproof cover 400 is arranged at intervals with the conical fireproof cover 100.

[0031] The mobile spark flying prevention device for hot work operation disclosed by the embodiments of the present application can independently adjust the height through the extension support rods 210, so that the conical fireproof cover 100 can flexibly adapt to the mobile spark flying prevention device for hot work operation of different heights or complex terrains (such as sloping land, obstacles, or inclined surfaces, etc.), and ensure that the protection surface always covers the operation area. The conical structure guides the sparks to converge to the center, and cooperates with the collecting groove 300 to realize centralized recovery, thereby reducing the risk of spark flying to the surrounding environment. The auxiliary fireproof cover 400 can independently adjust the height or angle, and works cooperatively with the conical fireproof cover 100 to cover a wider protection area.

[0032] The collecting groove 300 is installed at the narrowing end, which can accurately capture the sparks converged by the conical fireproof cover 100, and avoid the sparks from scattering and causing secondary fires. A suction system (such as a negative pressure fan) can be integrated, thereby further enhancing the spark recovery efficiency and reducing the on-site cleaning cost.

[0033] In one embodiment, the telescopic support rod 210 includes a first rod 211, a second rod 212, and a telescopic buckle 213. The top of the first rod 211 is connected with the conical fireproof cover 100, and the first rod 211 and the second rod 212 are slidingly connected. The telescopic buckle 213 is connected with one of the first rod 211 and the second rod 212, and is used to fix the first rod 211 and the second rod 212. When the telescopic buckle 213 is closed, the positions of the first rod 211 and the second rod 212 are fixed, and when the telescopic buckle 213 is opened, the first rod 211 and the second rod 212 can move relatively.

[0034] Since the first rod 211 and the second rod 212 are slidingly connected, and the positions of the two rods can be fixed by the telescopic buckle 213, the height of the telescopic support rod 210 can be flexibly adjusted according to actual needs. In a hot work operation, different operation environments and height requirements may be different, and such height adjustability enables the device to adapt to various complex operation scenarios, improving the applicability and flexibility of the device.

[0035] The design of the telescopic buckle 213 makes it simple and fast to adjust the height of the telescopic support rod 210. When the height needs to be adjusted, the telescopic buckle 213 is simply loosened, the relative positions of the two rods are adjusted, and then the telescopic buckle 213 is closed again. This operation method is not only convenient, but also saves time and labor cost, improving the operation efficiency.

[0036] In one embodiment, the telescopic support rod 210 can be length-adjusted by hydraulic, pneumatic or mechanical screw rod, to adapt to different height of hot work equipment or complex terrain (such as slope, ladder).

[0037] In one embodiment, the second rod 212 is provided with universal wheels 240 at the end away from the first rod 211. The design of the universal wheels 240 enables the entire anti-sparking device to move easily in different directions. In a hot work operation site, it is often necessary to adjust the position of the device according to the operation progress or safety requirements, and the presence of the universal wheels 240 greatly simplifies this process, improving the work efficiency.

[0038] Although the universal wheels 240 themselves have the ability to move in multiple directions, they are usually equipped with brake devices (although not directly mentioned, but it is a common design). After the device is moved to the specified position, the universal wheels 240 can be locked by the brake device to ensure that the device stays stably at the required position, improving the accuracy of positioning.

[0039] The terrain of a hot work operation site may not always be flat, and there may be slopes, unevenness, etc. The design of the universal wheels 240 enables the device to better adapt to these complex terrains, maintain stable movement and positioning, and further enhance the practicality and adaptability of the device.

[0040] Without the universal wheel 240, moving the entire spark-spatter-proof device can require multiple people to cooperate, using ropes, pulleys, and other tools for carrying, which is both laborious and time-consuming. With the addition of the universal wheel 240, the process becomes easy and simple, and only one person is needed to easily push the device to move, greatly reducing the burden of manual carrying.

[0041] In an embodiment, the conical fireproof cover 100 is made of fireproof cloth, high-temperature-resistant metal mesh, or fire-resistant material (such as ceramic fiber, aluminum silicate fiber, etc.), ensuring structural stability in high-temperature environments and not generating secondary fire sources.

[0042] Fireproof cloth is usually woven from special fibers (such as glass fiber, ceramic fiber) and has excellent high-temperature resistance (can withstand 800-1200°C high temperature), does not burn or melt at high temperatures, and can effectively block spark spatter and prevent fire spread. Fireproof cloth is soft and light in weight, easy to fold and carry, and suitable for work scenarios that require frequent movement.

[0043] High-temperature-resistant metal mesh, such as stainless steel mesh and iron-chromium-aluminum alloy mesh, maintains structural stability in high-temperature environments and is not easily deformed or melted, forming a reliable physical barrier to prevent spark penetration. Compared to solid metal plates, the mesh structure of high-temperature-resistant metal mesh significantly reduces weight while maintaining sufficient strength, making it easy to install and adjust.

[0044] In an embodiment, the conical fireproof cover 100 is provided with a support structure 110, which is used to support the conical fireproof cover 100.

[0045] The conical fireproof cover 100 is prone to deformation under high temperature or external force, and the support structure 110 (such as a ring-shaped framework or radial support rods) can effectively disperse stress, maintain the shape of the cover stable, and avoid protection failure due to deformation. The support structure 110 enhances the overall stiffness, making the fireproof cover less likely to be blown or knocked down in strong wind environments, ensuring continuous protection effect.

[0046] In an embodiment, the support structure 110 includes a first connecting piece 111, a second connecting piece 112, and at least three third connecting pieces 113. The first connecting piece 111 is annular along the circumference of the flared end. The second connecting piece 112 is annular along the circumference of the tapered end, and the second connecting piece 112 is connected to the collection groove 300. One end of the third connecting piece 113 is connected to the first connecting piece 111, and the other end of the third connecting piece 113 is connected to the second connecting piece 112. Each third connecting piece 113 is spaced apart along the circumference of the conical fireproof cover 100.

[0047] The first connecting piece 111 (flared end annular) and the second connecting piece 112 (flared end annular) form a stable upper and lower boundary, significantly improving the overall rigidity of the fire cover, effectively resisting high temperature deformation and mechanical external force impact. At least three third connecting pieces 113 are evenly distributed circumferentially, forming a polygonal stable structure, evenly dispersing the stress to the entire conical surface, avoiding damage or collapse caused by local stress concentration. Each connecting piece can be independently manufactured and quickly assembled, facilitating the adjustment of support structure 110 parameters (such as height, angle) according to different operation requirements, improving the versatility and adaptability of the device.

[0048] The second connecting piece 112 is directly connected with the collection groove 300, ensuring that sparks and slag flow smoothly into the collection device under the action of gravity, avoiding secondary splashing.

[0049] In one embodiment, the number of third connecting pieces 113 is equal to the number of telescopic support rods 210, each third connecting piece 113 is arranged one-to-one with each telescopic support rod 210, and the end of the third connecting piece 113 away from the second connecting piece 112 is connected with the telescopic support rod 210.

[0050] The one-to-one correspondence design of the third connecting piece 113 and the telescopic support rod 210 allows the support system to be modularly expanded. According to the operation scale and protection requirements, the number of support rods can be flexibly increased or decreased, improving the versatility and adaptability of the device.

[0051] In one embodiment, the third connecting piece 113 and the telescopic support rod 210 are connected through the connecting block 220, the connecting block 220 is a universal joint, and the fixed block 230 is arranged between the third connecting piece 113 and the telescopic support rod 210.

[0052] The universal joint allows the conical fire cover 100 to freely rotate and tilt in three-dimensional space, adapting to changes in the position of the hot work equipment (such as curved welding, irregular surface operation), ensuring that the protection surface always covers the hot work point. When the hot work equipment moves or vibrates, the universal joint can absorb the impact force, preventing the protection cover from shifting or falling off, improving stability.

[0053] The fixed block 230 is arranged between the third connecting piece 113 and the telescopic support rod 210, which can independently lock the angle of the support rod, while other support rods can still be freely adjusted, realizing a mixed support structure 110 of "local rigidity + overall flexibility". When the fixed block 230 locks the third connecting piece 113 and the telescopic support rod 210, the third connecting piece 113 and the telescopic support rod 210 are fixed, and when each third connecting piece 113 and each telescopic support rod 210 are fixed, the position and angle of the conical fire cover 100 are fixed; when the fixed block 230 is unlocked, the third connecting piece 113 and the telescopic support rod 210 can continue to adjust the angle through the universal joint.

[0054] Wherein, the universal joint is usually composed of a driving fork, a driven fork and a cross shaft (or a ball cage structure). The cross shaft type universal joint is the most common type, and the cross shaft is connected with the two forks through bearings, allowing the two shafts to rotate flexibly within a certain angle range. When there is an included angle between the two shafts, the universal joint enables power to be transmitted from the driving shaft to the driven shaft through the rotation of the cross shaft. Due to the special design of the cross shaft, the rotational speeds of the driving shaft and the driven shaft may not be equal at a certain moment, but through reasonable arrangement of two universal joints (such as double universal joint transmission), constant speed transmission can be achieved. Of course, setting the connecting block 220 as a universal joint is only one embodiment in this embodiment, and in other embodiments, the connecting block 220 can also be provided with other structures capable of realizing the relative rotation of the third connecting piece 113 and the telescopic supporting rod 210.

[0055] In one embodiment, the telescopic supporting rod 210 is provided as four, and the third connecting piece 113 is also provided as four.

[0056] The four supporting rods are uniformly distributed along the circumference of the conical fireproof cover 100, forming a stable four-prism conical supporting frame, which significantly improves the overall overturning resistance. Compared with three supporting rods, four supporting rods can more evenly disperse the self-weight and external load (such as wind force, spark impact force) of the fireproof cover, avoiding local stress concentration leading to structural deformation or failure.

[0057] The four-edge supporting structure 110 forms a closed loop in the horizontal direction, effectively resisting the torsional moment, ensuring that the fireproof cover can still maintain a stable posture under complex working conditions (such as strong wind, equipment vibration), preventing the protective surface from deviating due to torsion.

[0058] If a supporting rod or a third connecting piece 113 is damaged, it can be replaced individually without affecting the continued work of other parts, reducing maintenance downtime and maintenance costs.

[0059] In one embodiment, the first connecting piece 111 includes a plurality of magnetic connecting strips, and the plurality of magnetic connecting strips are sequentially connected in a ring shape with adjacent magnetic connecting strips magnetically connected.

[0060] The magnetic connecting strips can be spliced by magnetic force adsorption without the need for tools or bolt fastening, significantly shortening the installation time, especially suitable for temporary or emergency hot work operation scenarios. Magnetic connection requires the application of a certain external force to separate, preventing accidental collision from causing connection disconnection. In addition, the number of connecting strips can be flexibly increased or decreased according to the size requirements of the fireproof cover, adjusting the size of the ring structure to adapt to different specifications of hot work equipment.

[0061] The magnetic connecting strips can be adjusted in angle, allowing the ring structure to better fit the curved surface or irregular shape of the hot work equipment, ensuring that the protective surface is in close contact with the equipment to prevent sparks from splashing.

[0062] The magnetic connecting strip can be made of high-temperature-resistant magnetic material (such as neodymium-iron-boron magnet), so as to ensure that it does not fail in a high-temperature environment and maintains the integrity of the fire cover.

[0063] In one embodiment, a magnetic annular connecting strip 410 is also arranged at the opening of the auxiliary fire cover 400 to facilitate the installation and fixation of the auxiliary fire cover 400.

[0064] Through the above embodiments, the mobile spark flying prevention device for hot work operation has the following beneficial effects or advantages: the combination design of the conical fire cover 100, the angle adjusting assembly 200 and the auxiliary fire cover 400 realizes all-around protection against spark flying during hot work operation, effectively reducing the risk of fire or explosion accidents caused by spark flying. The design of the telescopic supporting rod 210 and the fixing block 230 of the angle adjusting assembly 200 enables the device to be flexibly adjusted according to different working environments and height requirements, improving the applicability and flexibility of the device. The design of the supporting structure 110 in the conical fire cover 100 enhances the stability and reliability of the device, ensuring that the device does not shake or tilt due to external forces during hot work operation. The design of the universal wheel 240 at the bottom of the telescopic supporting rod 210 enables the device to be conveniently moved, positioned and directionally adjusted, improving the work efficiency. The arrangement of the auxiliary fire cover 400 further expands the protection range and enhances the protection effect, enabling the device to better cope with complex working environments.

[0065] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application are described clearly and completely above in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0066] Therefore, the above detailed description of the embodiments of the present application disclosed in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0067] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0068] In the description of the application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0069] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0070] In the present application, unless specifically defined and limited otherwise, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0071] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0072] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A mobile spark protection device for hot work, characterized in that: include: A conical fireproof cover, the conical fireproof cover comprising a flared end and a constricted end; An angle adjustment assembly, the angle adjustment assembly includes at least three groups of adjustment mechanisms, each group of the adjustment mechanisms includes a telescopic support rod, a connecting block and a fixed block, each of the telescopic support rods is arranged at intervals along the circumference of the conical fireproof cover, the telescopic support rod is connected to the conical fireproof cover through the connecting block, and the fixed block is used to fix the angle between the telescopic support rod and the conical fireproof cover; A collecting trough, the collecting trough being installed at the conical fireproof cover's conical end; as well as At least one auxiliary fireproof cover is provided, and the auxiliary fireproof cover is spaced apart from the conical fireproof cover.

2. The mobile hot work spark prevention device according to claim 1 is characterized in that: The telescopic support rod includes a first rod, a second rod and a telescopic buckle, the top of the first rod is connected to the conical fireproof cover, the first rod and the second rod are slidably connected, and the telescopic buckle is connected to one of the first rod and the second rod; When the telescopic buckle is closed, the positions of the first rod and the second rod are fixed.

3. The mobile hot work spark prevention device according to claim 2, characterized in that: A universal wheel is provided at one end of the second rod facing away from the first rod.

4. The mobile hot work spark prevention device according to claim 1, characterized in that: The conical fireproof cover is made of fireproof cloth or high-temperature resistant metal mesh.

5. The mobile hot work spark prevention device according to any one of claims 1 to 4, characterized in that: A supporting structure is provided in the conical fireproof cover, and the supporting structure is used to support the conical fireproof cover.

6. The mobile hot work spark prevention device according to claim 5, characterized in that: The support structure includes a first connecting member, a second connecting member and at least three third connecting members. The first connecting member is annular along the circumference of the expanded end, the second connecting member is annular along the circumference of the narrowed end, and the second connecting member is connected to the collection tank. One end of the third connecting member is connected to the first connecting member, and the other end of the third connecting member is connected to the second connecting member. Each of the third connecting members is arranged at intervals along the circumference of the conical fire cover.

7. The mobile hot work spark prevention device according to claim 6, characterized in that: The number of the third connecting members is equal to the number of the telescopic support rods, each of the third connecting members is arranged in a one-to-one correspondence with each of the telescopic support rods, and the third connecting members are connected to the telescopic support rods.

8. The mobile hot work spark prevention device according to claim 7, characterized in that: The third connecting member is connected to the telescopic support rod via the connecting block, the connecting block is a universal joint, and the fixing block is arranged between the third connecting member and the telescopic support rod.

9. The mobile hot work spark prevention device according to claim 7, characterized in that: The number of the telescopic support rods is four, and the number of the third connecting members is also four.

10. The mobile hot work spark prevention device according to claim 6, characterized in that: The first connecting member includes a plurality of magnetic connecting strips, which are sequentially connected to form a ring, and adjacent magnetic connecting strips are magnetically connected.

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