A multi-directional self-anchoring assembled fire protection device for steel trusses

Abstract

The present invention discloses a multi-directional self-anchoring assembled fire protection device for steel trusses, which includes a passive fire protection board, an upper active fire protection board and a lower active fire protection board; the passive fire protection board includes a thin steel plate, an outer layer of fireproof rock wool and an inner layer of fireproof rock wool arranged in sequence from outside to inside; after the inner layers of the outer layer of fireproof rock wool and the inner layer of fireproof rock wool are attached, a stepped clamping part is formed around; V-shaped steel plate anchor heads are arranged around the thin steel plate; a compression spring is arranged inside the upper active fire protection board; the upper active fire protection board is provided with an active fire extinguishing mechanism, and a fire extinguishing trigger mechanism is arranged on the lower active fire protection board. The active fire extinguishing mechanism and the fire extinguishing trigger mechanism on the active fire protection board of the present invention cooperate to connect and fix the upper active fire protection board and the lower active fire protection board. At the same time, the fire extinguishing trigger mechanism can trigger the active fire extinguishing mechanism at the first time through high temperature when a fire occurs outside, take active fire protection measures against the external fire, and protect the steel truss.

Description

Technical Field

[0001] The present invention relates to the field of fire protection for structural members, and particularly to a multi-directional self-anchoring assembled fire protection device for steel trusses. Background Art

[0002] Building fires occur frequently. Since engineering materials will degrade in performance under the high temperature of a fire, building fires can cause damage or even collapse to engineering structures. Therefore, fire protection design and fire protection measures for structures are required by codes. Since the structure with fire protection measures can block or slow down the transfer of high fire temperature to the interior of structural members, it is possible to avoid damage and collapse of the structure, and enable the people inside the structure to escape effectively and ensure the necessary time for fire fighting.

[0003] At present, domestic and foreign codes require the analysis and calculation of the fire resistance performance of important building structures to design fire protection measures, and the codes provide various fire protection methods, such as spraying fire retardant coatings, wrapping fire protection boards, etc. These methods can play a certain role and achieve the expected effect for different situations, but they have some limitations or disadvantages. For example, when spraying fire retardant coatings, it is not easy to ensure the fire resistance time and it is easily damaged and peeled off, affecting the fire protection effect; for example, when wrapping fire protection boards, the connection is relatively complex, and generally, additional complex connection fittings are used for anchoring to fix the fire protection layer. This connection method not only has complex construction procedures and a long cycle, but may even cause damage or destruction to the structural members themselves, affecting the mechanical properties of the structure. Therefore, it will have important engineering application significance to research and develop a device that does not damage the structural performance and is convenient and fast for construction to carry out fire protection for building structural members. Moreover, the aforementioned methods are all passive fire protection, and passive fire protection cannot further hinder the spread of fire. Therefore, it is necessary to provide a truss multi-directional self-anchoring assembled fire protection device that can carry out active fire protection. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a steel truss multi-directional self-anchored assembled fire protection device, which solves the problem that after a building fire occurs, the structural components can both ensure the fire resistance of the components and not cause damage to the structural components themselves, and at the same time install a simple fire protection device to carry out fire protection of the building structural components and prevent the further spread of the fire through active fire protection. The present invention includes a passive fireproof board and an active fireproof board; the passive fireproof board includes a thin steel plate arranged on the outermost layer, a fireproof rock wool outer layer fixed on the inner side of the thin steel plate, and a fireproof rock wool inner layer fixed on the fireproof rock wool outer layer; the fireproof rock wool outer layer is bonded to the inner layer of the fireproof rock wool inner layer to form a step-shaped clamping portion around it, and the length and width of the fireproof rock wool outer layer and the fireproof rock wool inner layer are the same; V-shaped steel plate anchoring heads are arranged around the thin steel plate, and the V-shaped steel plate anchoring heads are divided into outward V-shaped steel plate anchoring heads and inward V-shaped steel plate anchoring heads, and the adjacent passive fireproof boards or active fireproof boards are respectively provided with outward V-shaped steel plate anchoring heads and inward V-shaped steel plate anchoring heads. The steel plate anchoring head, the adjacent passive fire protection panels or active fire protection panels are connected and fixed by buckling the outward V-shaped steel plate anchoring head and the inward V-shaped steel plate anchoring head; the active fire protection panel includes an upper active fire protection panel and a lower active fire protection panel, and a compression spring is arranged on the inner side of the upper active fire protection panel; the upper active fire protection panel is provided with an active fire extinguishing mechanism, and the lower active fire protection panel is provided with a fire extinguishing triggering mechanism; while the active fire extinguishing mechanism and the fire extinguishing triggering mechanism fix the upper active fire protection panel and the lower active fire protection panel, the fire extinguishing triggering mechanism is triggered by high temperature, and after the upper active fire protection panel is lifted to a certain angle, the active fire extinguishing mechanism sprays the fire extinguishing medium outwardly.

[0005] Furthermore, the upper active fireproof plate also includes a thin steel plate arranged on the outermost layer and a fireproof rock wool outer layer fixed on the inner side of the thin steel plate, a V-shaped steel plate anchoring head is also arranged on the upper side of the thin steel plate, a lower fixed edge is arranged on the lower side of the thin steel plate, and an upper mounting through hole for mounting the active fire extinguishing mechanism is arranged on the lower fixed edge;

[0006] Furthermore, the lower active fire protection plate also includes a thin steel plate arranged on the outermost layer and a fireproof rock wool outer layer fixed on the inner side of the thin steel plate, and V-shaped steel plate anchoring heads are also arranged on the left side, right side and lower side of the thin steel plate, and an upper fixed edge is also arranged on the upper side of the thin steel plate, and a lower mounting through hole for installing a fire extinguishing trigger mechanism is arranged on the upper fixed edge, and the upper mounting through hole is aligned with the lower mounting through hole.

[0007] Furthermore, the active fire extinguishing mechanism includes a fire extinguishing pipe fixed on a thin steel plate, the fire extinguishing pipe is used to transport the fire extinguishing medium, the upper end of the fire extinguishing pipe is connected to a metal bellows, the lower end of the fire extinguishing pipe is connected to a sealing ring, and a sealing ball is also provided at the lower end of the sealing ring. The sealing ring is sealed and fixedly connected to the fire extinguishing pipe, and the sealing ball is fixed to the lower side of the sealing ring through a fire extinguishing trigger mechanism.

[0008] Furthermore, the fire extinguishing trigger mechanism includes a support cylinder for supporting and fixing the sealing ball and a guide rod for installing the support cylinder. The guide rod is fixedly connected to the thin steel plate through a number of brackets. The axes of the fire extinguishing pipe, the support cylinder, and the guide rod coincide. A lower support clamping part is arranged at the lower end of the guide rod, and an upper support clamping part is arranged at the lower end of the support cylinder. The lower support clamping part and the upper support clamping part penetrate to the outer surface of the thin steel plate. A strip-shaped opening for the movement of the upper support clamping part is arranged on the thin steel plate. A fire-fighting glass bulb is clamped and fixed between the lower support clamping part and the upper support clamping part. When the fire-fighting glass bulb is installed between the lower support clamping part and the upper support clamping part, the support cylinder extends to fix the upper active fireproof board and the lower active fireproof board, and at the same time, the support cylinder presses against the sealing ball and seals the fire extinguishing pipe.

[0009] Furthermore, an arc surface matching the sealing ball is arranged on the inner ring surface of the sealing ring. The arc surface is bowl-shaped, and a surface contact is formed between the arc surface and the sealing ball. A rubber piston is also arranged inside the end of the fire extinguishing pipe, and the bottom of the rubber piston contacts the sealing ball.

[0010] Furthermore, three connecting pieces are also arranged on the side of the sealing ball. One end of each connecting piece is fixed to the sealing ball, and the other end is fixed to the outside of the fire extinguishing pipe. The connecting pieces are soft steel wire ropes, fiber ropes, or belt ropes.

[0011] Furthermore, a hollow funnel part for supporting the sealing ball is arranged at the upper end of the support cylinder. The inner funnel surface of the hollow funnel part is semi-spherical, and the contact area between the hollow funnel part and the sealing ball is greater than or equal to one-fourth of the surface area of the sealing ball.

[0012] Furthermore, the upper support clamping part includes an upper connecting rod connected to the support cylinder and an upper support part connected to the upper connecting rod. A lower groove for installing the fire-fighting glass bulb is arranged at the lower end of the upper support part. The lower support clamping part includes a lower connecting rod and a lower support part connected to the lower connecting rod. An upper groove for installing the fire-fighting glass bulb is arranged at the lower end of the lower support part.

[0013] Furthermore, a return spring is also arranged between the lower support clamping part and the upper support clamping part. When the lower support clamping part and the upper support clamping part clamp and fix the fire-fighting glass bulb, the return spring is in a tension energy storage state.

[0014] Furthermore, the fire extinguishing medium is water, a flame retardant, or a dry powder fire extinguishing agent.

[0015] The beneficial effects of the present invention are as follows: The present invention has a passive fireproof board and an active fireproof board. The passive fireproof board includes a thin steel plate, an outer layer of fireproof rock wool, and an inner layer of fireproof rock wool. After the outer layer of fireproof rock wool and the inner layer of fireproof rock wool are adhered, a stepped clamping portion for clamping is formed around, which can facilitate the installation between adjacent passive fireproof boards. At the same time, there are V-shaped steel plate anchoring heads on the side of the thin steel plate, which can facilitate the connection and fixation between adjacent passive fireproof boards or active fireproof boards, and facilitate the installation of the passive fireproof board; The active fireproof board includes an upper active fireproof board and a lower active fireproof board. An active fire extinguishing mechanism is installed on the upper active fireproof board, and a fire extinguishing trigger mechanism is installed on the lower active fireproof board. The active fire extinguishing mechanism cooperates with the fire extinguishing trigger mechanism, can connect and fix the upper active fireproof board and the lower active fireproof board. At the same time, the fire extinguishing trigger mechanism can trigger the active fire extinguishing mechanism in the first time through high temperature when a fire occurs outside, take active fire prevention measures against the fire outside, further hinder the spread of the fire, and take active fire prevention measures to protect the steel truss.

[0016] The passive fireproof board of the present invention has an outer layer of fireproof rock wool and an inner layer of fireproof rock wool, and the active fireproof board has an outer layer of fireproof rock wool and an active fire prevention mechanism, so that the fireproof board has good fire resistance. At the same time, no additional connecting parts are required for installation, and there is no damage to the structure. The active fire prevention mechanism can take active fire prevention measures, thus further achieving a good fire prevention effect; The passive fireproof board and the active fireproof board can be seamlessly connected through the V-shaped steel plate anchoring heads arranged around, are not easily damaged by impact, and different-shaped fireproof devices can be quickly assembled in multiple directions on site, with a fast construction speed. Brief Description of the Drawings

[0017] Figure 1 is a schematic external view of the L-shaped passive fireproof board in the present invention;

[0018] Figure 2 is a top view of the L-shaped passive fireproof board in the present invention;

[0019] Figure 3 is a schematic view in the side view direction of the L-shaped passive fireproof board in the present invention;

[0020] Figure 4 is a side view of the active fireproof board in the present invention;

[0021] Figure 5 is Figure 5 partial enlarged view A in;

[0022] Figure 6 is a working schematic view of the active fireproof board;

[0023] Figure 7 is the connection schematic of the V-shaped steel plate anchoring head in the present invention Figure 1 ;

[0024] Figure 8 Schematic connection of the V-shaped steel plate anchoring head in the present invention Figure 2 ;

[0025] Figure 9 Installation schematic when the passive protection plate is in use Figure 1 ;

[0026] Figure 10 Installation schematic when the passive protection plate is in use Figure 2 ;

[0027] Figure 11 Installation schematic when the passive protection plate is in use Figure 3 ;

[0028] Figure 12 Installation schematic diagram of the active protection plate in the present invention

[0029] Explanation of the main component symbols in the figure is as follows:

[0030] 1. Passive fire protection plate; 4. Compression spring; 5. Thin steel plate; 6. Outer layer of fireproof rock wool; 7. Inner layer of fireproof rock wool; 8. Inward V-shaped steel plate anchoring head; 9. Outward V-shaped steel plate anchoring head; 10. Steel truss

[0031] 2. Upper side active fire protection plate; 21. Lower fixed edge; 22. Active fire extinguishing mechanism; 221. Fire extinguishing pipe; 222. Sealing ring; 223. Sealing ball

[0032] 3. Lower side active fire protection plate; 31. Upper fixed edge; 32. Fire extinguishing trigger mechanism; 321. Support cylinder; 322. Guide rod; 323. Upper support clamping part; 324. Lower support clamping part; 325. Fire-fighting glass bulb Detailed implementation manners

[0033] The following describes the detailed implementation manners of the present invention to facilitate those skilled in the art of the present technology to understand the present invention. However, it should be clear that the present invention is not limited to the scope of the detailed implementation manners. For those of ordinary skill in the art of the present technology, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are within the scope of protection.

[0034] Such as Figure 1 、 2As shown in FIGS. 3, 7, and 8, the steel truss multi-directional self-anchoring assembled fire protection device includes a passive fire protection board 1 and an active fire protection board; the passive fire protection board 1 includes a thin steel plate 5 arranged on the outermost layer, a fireproof rock wool outer layer 6 fixed to the inner side of the thin steel plate 5, and a fireproof rock wool inner layer 7 fixed to the fireproof rock wool outer layer 6; after the inner layers of the fireproof rock wool outer layer 6 and the fireproof rock wool inner layer 6 are attached, a stepped clamping portion is formed around; the lengths and widths of the inner layers of the fireproof rock wool outer layer 6 and the fireproof rock wool inner layer 7 are the same; V-shaped steel plate anchor heads are arranged around the thin steel plate 5, and the V-shaped steel plate anchor heads are divided into an outward V-shaped steel plate anchor head 8 and an inward V-shaped steel plate anchor head 9. The outward V-shaped steel plate anchor head 9 and the inward V-shaped steel plate anchor head 8 are respectively arranged on adjacent passive fire protection boards 1 or active fire protection boards, and adjacent passive fire protection boards 1 or active fire protection boards are connected and fixed by buckling the outward V-shaped steel plate anchor head 9 and the inward V-shaped steel plate anchor head 8.

[0035] Among them, the active fire protection board includes an upper active fire protection board 2 and a lower active fire protection board 3. A compression spring is arranged inside the upper active fire protection board 2; an active fire extinguishing mechanism 22 is arranged on the upper active fire protection board 2, and a fire extinguishing trigger mechanism 32 is arranged on the lower active fire protection board 3; while the active fire extinguishing mechanism 22 and the fire extinguishing trigger mechanism 32 fix the upper active fire protection board 2 and the lower active fire protection board 3, the fire extinguishing trigger mechanism 32 is triggered by high temperature. After the upper active fire protection board 2 is lifted by a certain angle, the active fire extinguishing mechanism 22 sprays the fire extinguishing medium outwards, and the fire extinguishing medium is water, a flame retardant or a dry powder fire extinguishing agent.

[0036] As Figure 4 、 5 As shown in FIGS. 6, the upper active fire protection board 2 also includes a thin steel plate 5 arranged on the outermost layer and a fireproof rock wool outer layer 6 fixed to the inner side of the thin steel plate 5. A V-shaped steel plate anchor head is also arranged on the upper side of the thin steel plate 5, and a lower fixed edge 21 is arranged on the lower side of the thin steel plate 5. An upper installation through hole for installing the active fire extinguishing mechanism 22 is arranged on the lower fixed edge 21.

[0037] The active fire extinguishing mechanism 22 includes a fire extinguishing pipe 221 fixed to the thin steel plate 5. The fire extinguishing pipe 221 is used for conveying the fire extinguishing medium. The upper end of the fire extinguishing pipe 221 is connected to a metal bellows, and the lower end of the fire extinguishing pipe 221 is connected to a sealing ring 222. A sealing ball 223 is also arranged at the lower end of the sealing ring 222. The sealing ring 223 is hermetically and fixedly connected to the fire extinguishing pipe 221, and the sealing ball 223 is fixed to the lower side of the sealing ring 223 through the fire extinguishing trigger mechanism 32.

[0038] The lower active fireproof board 3 also includes a thin steel plate 5 arranged on the outermost layer and a fireproof rock wool outer layer 6 fixed to the inner side of the thin steel plate 5. V-shaped steel plate anchoring heads are also arranged on the left, right, and lower sides of the thin steel plate 5. An upper fixing edge 31 is arranged on the upper side of the thin steel plate 5. The upper fixing edge 31 is provided with a lower installation through hole for installing the fire extinguishing trigger mechanism 32, and the upper installation through hole is arranged in alignment with the lower installation through hole.

[0039] The fire extinguishing trigger mechanism 32 includes a support cylinder 321 for supporting and fixing the sealing ball 223 and a guide rod 322 for installing the support cylinder 321. The guide rod 322 is fixedly connected to the thin steel plate 5 through a number of brackets. The axes of the fire extinguishing pipe 221, the support cylinder 321, and the guide rod 322 coincide. A lower support clamping part 324 is arranged at the lower end of the guide rod 322, and an upper support clamping part 323 is arranged at the lower end of the support cylinder 321. The lower support clamping part 324 and the upper support clamping part 323 penetrate to the outer surface of the thin steel plate 5. A strip-shaped opening for the movement of the upper support clamping part 323 is arranged on the thin steel plate 5. A fire-fighting glass bulb 325 is clamped and fixed between the lower support clamping part 324 and the upper support clamping part 323. When the fire-fighting glass bulb 325 is installed between the lower support clamping part 324 and the upper support clamping part 323, the support cylinder 321 extends to fix the upper active fireproof board 2 and the lower active fireproof board 3, and at the same time, the support cylinder 321 presses against and seals the sealing ball 223 to seal the fire extinguishing pipe 221.

[0040] In this embodiment, an arc surface that mates with the sealing ball 223 is provided on the inner ring surface of the sealing ring 222. The arc surface is bowl-shaped, and a surface contact is formed between the arc surface and the sealing ball 223. A rubber piston is further provided inside the end of the fire extinguishing pipe 221, and the bottom of the rubber piston contacts the sealing ball 221. The bowl-shaped arc surface forms a surface contact with the sealing ball 223, which has better sealing performance. At the same time, the bowl-shaped arc surface can center and position the sealing ball 223, making the fixing of the sealing ball 222 more stable when the sealing ring 222 cooperates with the support cylinder 321 of the fire extinguishing trigger mechanism 32. The rubber piston is located inside the end of the fire extinguishing pipe 221 and is supported and fixed by the top of the sealing ball 221. The rubber piston can slide inside the end of the fire extinguishing pipe 221. In the normal state, the sum of the frictional force between the rubber piston and the inner wall of the fire extinguishing pipe 221 and the supporting force of the fire extinguishing trigger mechanism 32 on the sealing ball 222 is less than or equal to the pressure of the fire extinguishing medium in the fire extinguishing pipe 221, thereby achieving the sealing effect of the sealing ball 222 on the fire extinguishing pipe 221. The role of the rubber piston is to greatly reduce the supporting force required to seal the fire extinguishing pipe 221, so as to better utilize the fire extinguishing trigger mechanism 32 to cancel the sealing of the fire extinguishing pipe 221 in the active fire extinguishing mechanism 22. After losing the supporting effect of the sealing ball 222, the frictional force between the rubber piston and the fire extinguishing pipe 221 is less than the pressure of the fire extinguishing medium, so that the rubber piston is pushed out of the end of the fire extinguishing pipe 221 under the action of the fire extinguishing medium. In this embodiment, three connecting pieces are further provided on the side of the sealing ball 223. One end of each connecting piece is fixed to the sealing ball 223, and the other end is fixed to the outside of the fire extinguishing pipe 221. The connecting pieces are soft steel wire ropes, fiber ropes or belt ropes. After the supporting force of the support cylinder 321 in the fire extinguishing trigger mechanism 32 on the sealing ball 223 is removed, the sealing ball is located below the ejected fire extinguishing medium under the action of the three connecting pieces. After the fire extinguishing medium is ejected, it sprays on the sealing ball 222. The spherical surface of the sealing ball 222 plays a certain guiding role for the fire extinguishing medium, guiding the fire extinguishing medium to the periphery of the sealing ball, so that the spraying range of the fire extinguishing medium is larger, thereby improving the spraying fire extinguishing effect of the fire extinguishing medium.

[0041] In this embodiment, a hollow funnel portion for supporting the sealing ball 223 is provided at the upper end of the support cylinder 321. The inner funnel surface of the hollow funnel portion is semi-spherical, and the contact area between the hollow funnel portion and the sealing ball 223 is greater than or equal to one-fourth of the surface area of the sealing ball 223. The hollow funnel portion effectively supports and fixes the lower part of the sealing ball 223 to the sealing ball 222. The semi-spherical inner funnel surface can better form a surface contact with the sealing ball 222 and play a supporting role for the sealing ball 222.

[0042] In this embodiment, the upper support clamping part 323 includes an upper connecting rod connected to the support tube 321, and an upper supporting part connected to the upper connecting rod, and the lower end of the upper supporting part is provided with a lower groove for installing the fire glass bubble; the lower support clamping part 324 includes a lower connecting rod and a lower supporting part connected to the lower connecting rod, and the lower end of the lower supporting part is provided with an upper groove for installing the fire glass bubble 325. The upper supporting part and the lower supporting part are bowl-shaped, which can well support and position the upper and lower sides of the fire glass bubble 325, thereby facilitating the fixing of the fire glass bubble 325, making the fixing of the fire glass bubble 325 more secure, and not easily being triggered by mistake under the influence of external force, thereby ensuring the stability and reliability of the fire extinguishing trigger mechanism 32.

[0043] In this embodiment, a return spring is further provided between the lower support clamping portion 323 and the upper support clamping portion 324. When the lower support clamping portion 323 and the upper support clamping portion 324 clamp and fix the fire glass bulb 325, the return spring is in a stretched energy storage state. The return spring can better recover the support tube 321 to a predetermined position after the fire glass bulb 325 bursts at high temperature, thereby improving the sensitivity of the fire extinguishing trigger mechanism 32 after being triggered, so that the active fire extinguishing mechanism 22 can quickly perform active fire extinguishing work.

[0044] The working principle and process of the active fire extinguishing mechanism 22 and the fire extinguishing triggering mechanism 32 are as follows:

[0045] Installation process: pre-fix the rubber piston inside the end of the fire extinguishing pipe 221, and then use a little tape to fix the sealing ball 222 to the lower end of the fire extinguishing pipe 221; press the upper active fire protection plate 2 to make the lower mounting hole of the upper active fire protection plate 2 coincide with the upper mounting hole of the lower active fire protection plate 3, move the upper support clamping part 324 to drive the support tube 321 to move upward, so that the support tube 321 passes through the upper mounting hole and the lower mounting hole in sequence until the upper end of the support tube 321 fixes the sealing ball 222, so that the sealing ball 222 seals the end of the fire extinguishing pipe 221, and finally fix the fire glass bubble 325 between the upper support clamping part 323 and the lower support clamping part 324, and use the fire glass bubble 325 to support the upper support clamping part 323 to fix and limit the position of the support tube 321, so that the support tube 321 is used to fix the upper active fire protection plate 2 and the lower active fire protection plate 3.

[0046] Active fire prevention process: When a fire breaks out outside, the temperature of the fire-fighting glass bulb 325 rises sharply. When the fire-fighting glass bulb 325 reaches the preset temperature, it bursts. Under the reset action of the reset spring, the reset spring brings back the support cylinder 321. The support cylinder 321 is withdrawn from the lower installation through hole and the lower installation through hole. After the upper active fire-proof board 2 loses the fixing effect of the support cylinder 321, it turns outwards under the ejection action of the compression spring. Since the upper side of the upper active fire-proof board 2 is connected to other fire-proof boards through the V-shaped steel plate anchor head, the upper active fire-proof board 2 can rotate to a certain extent, and the opening angle of the upper active fire-proof board 2 can be adjusted accordingly according to the reset spring. At the same time, when the support cylinder 321 is withdrawn, the bottom of the sealing ball 222 loses support and loosens. At this time, the friction between the rubber piston and the fire extinguishing pipe 221 is less than the pressure of the fire extinguishing medium, and the rubber piston is ejected from the end of the fire extinguishing pipe 221. The fire extinguishing pipe 221 starts to spray the fire extinguishing medium to take active fire prevention measures on the outside. Through the blocking and guiding action of the sealing ball 222, the fire extinguishing medium can expand the dispersion range, so that the fire extinguishing medium has a better fire prevention effect.

[0047] As Figure 9 , 10 and Figure 11 show the assembly process diagram when the passive fire-proof board 1 is L-shaped. The passive fire-proof board 1 can be straight-shaped or L-shaped. The L-shaped one is generally a steel truss 10 with a smaller width.

[0048] As Figure 12 shown, the steel truss with a larger width generally adopts the combination of the passive fire-proof board 1 and the active fire-proof board.

Claims

1. A multi-directional self-anchoring assembled fire protection device for steel trusses, characterized in that: It includes a passive fire protection panel (1) and an active fire protection panel; The passive fireproof panel (1) comprises a thin steel plate (5) arranged at the outermost layer, a fireproof rock wool outer layer (6) fixed to the inner side of the thin steel plate (5), and a fireproof rock wool inner layer (7) fixed to the fireproof rock wool outer layer (6); the fireproof rock wool outer layer (6) and the inner layer of the fireproof rock wool inner layer (7) are attached to form a stepped clamping portion around them, and the length and width of the fireproof rock wool outer layer (6) and the inner layer of the fireproof rock wool inner layer (7) are the same; V-shaped steel plate anchoring heads are arranged around the thin steel plate (5), and the V-shaped steel plate anchoring heads are divided into outward V-shaped steel plate anchoring heads (9) and inward V-shaped steel plate anchoring heads (8). Adjacent passive fire protection panels (1) or active fire protection panels are respectively provided with outward V-shaped steel plate anchoring heads (9) and inward V-shaped steel plate anchoring heads (8). Adjacent passive fire protection panels (1) or active fire protection panels are connected and fixed by buckling the outward V-shaped steel plate anchoring heads (9) and the inward V-shaped steel plate anchoring heads (8); The active fire protection plate comprises an upper active fire protection plate (2) and a lower active fire protection plate (3), wherein a compression spring is arranged on the inner side of the upper active fire protection plate (2); the upper active fire protection plate (2) is provided with an active fire extinguishing mechanism (22), and the lower active fire protection plate (3) is provided with a fire extinguishing trigger mechanism (32); The active fire extinguishing mechanism (22) and the fire extinguishing trigger mechanism (32) fix the upper active fire protection plate (2) and the lower active fire protection plate (3). The fire extinguishing trigger mechanism (32) is triggered by high temperature to open the upper active fire protection plate (2) to a certain angle, and then the active fire extinguishing mechanism (22) sprays a fire extinguishing medium outwards. The active fire extinguishing mechanism (22) comprises a fire extinguishing pipe (221) fixed on the thin steel plate (5), the fire extinguishing pipe (221) being used to transport a fire extinguishing medium, the upper end of the fire extinguishing pipe (221) being connected to a metal bellows, the lower end of the fire extinguishing pipe (221) being connected to a sealing ring (222), the lower end of the sealing ring (222) being further provided with a sealing ball (223), the sealing ring (222) being sealed and fixedly connected to the fire extinguishing pipe (221), and the sealing ball (223) being fixed to the lower side of the sealing ring (222) via the fire extinguishing trigger mechanism (32); The fire extinguishing trigger mechanism (32) includes a support cylinder (321) for supporting and fixing the sealing ball (223) and a guide rod (322) for installing the support cylinder (321). The guide rod (322) is fixedly connected to the thin steel plate (5) through a number of brackets. The axes of the fire extinguishing pipe (221), the support cylinder (321), and the guide rod (322) coincide. A lower support clamping part (324) is arranged at the lower end of the guide rod (322), and an upper support clamping part (323) is arranged at the lower end of the support cylinder (321). The lower support clamping part (324) and the upper support clamping part (323) penetrate to the outer surface of the thin steel plate (5). A strip-shaped opening for the movement of the upper support clamping part (323) is arranged on the thin steel plate (5). A fire-fighting glass bulb (325) is clamped and fixed between the lower support clamping part (324) and the upper support clamping part (323). When the fire-fighting glass bulb (325) is installed between the lower support clamping part (324) and the upper support clamping part (323), the support cylinder (321) extends out to fix the upper active fireproof board (2) and the lower active fireproof board (3). At the same time, the support cylinder (321) presses against the sealing ball (223) to seal the fire extinguishing pipe (221).

2. The multi-directional self-anchoring prefabricated fire protection device for steel trusses according to claim 1, wherein The upper active fireproof board (2) also includes a thin steel plate (5) arranged on the outermost layer and a fireproof rock wool outer layer (6) fixed to the inner side of the thin steel plate (5). A V-shaped steel plate anchor head is also arranged on the upper side of the thin steel plate (5). A lower fixing edge (21) is arranged on the lower side of the thin steel plate (5). An upper installation through hole for installing the active fire extinguishing mechanism (22) is arranged on the lower fixing edge (21). The lower active fireproof board (3) also includes a thin steel plate (5) arranged on the outermost layer and a fireproof rock wool outer layer (6) fixed to the inner side of the thin steel plate (5). V-shaped steel plate anchor heads are also arranged on the left side, right side, and lower side of the thin steel plate (5). An upper fixing edge (31) is arranged on the upper side of the thin steel plate (5). A lower installation through hole for installing the fire extinguishing trigger mechanism (32) is arranged on the upper fixing edge (31). The upper installation through hole and the lower installation through hole are arranged in alignment.

3. The steel truss multi-directional self-anchoring prefabricated fire protection device according to claim 1, characterized in that, The inner ring surface of the sealing ring (222) is provided with an arc surface that cooperates with the sealing ball (223). The arc surface is bowl-shaped, and a surface contact is formed between the arc surface and the sealing ball (223). A rubber piston is also arranged inside the end of the fire extinguishing pipe (221). The bottom of the rubber piston contacts the sealing ball (223).

4. The multi-directional self-anchoring prefabricated fire protection device for steel trusses according to claim 1, wherein Three connecting pieces are also arranged on the side of the sealing ball (223). One end of each connecting piece is fixed to the sealing ball (223), and the other end is fixed to the outside of the fire extinguishing pipe (221). The connecting pieces are soft steel wire ropes, fiber ropes, or belt ropes.

5. The multi-direction self-anchoring prefabricated fire protection device for steel trusses according to claim 1, characterized in that, The upper end of the support cylinder (321) is provided with a hollow funnel portion for supporting the sealing ball (223). The inner funnel surface of the hollow funnel portion is semi-spherical, and the contact area between the hollow funnel portion and the sealing ball (223) is greater than or equal to one-fourth of the surface area of the sealing ball (223).

6. The multi-directional self-anchoring prefabricated fire protection device for steel trusses according to claim 1, wherein The upper support clamping portion (323) includes an upper connecting rod connected to the support cylinder (321), and an upper support portion connected to the upper connecting rod. A lower groove for installing the fire-fighting glass bulb (325) is provided at the lower end of the upper support portion; the lower support clamping portion (324) includes a lower connecting rod, and a lower support portion connected to the lower connecting rod. An upper groove for installing the fire-fighting glass bulb (325) is provided at the lower end of the lower support portion.

7. The multi-directional self-anchoring prefabricated fire protection device for steel trusses according to claim 1, wherein, A return spring is further provided between the lower support clamping portion (324) and the upper support clamping portion (323). When the lower support clamping portion (324) and the upper support clamping portion (323) clamp and fix the fire-fighting glass bulb (325), the return spring is in a stretched energy storage state.

8. The multi-directional self-anchoring prefabricated fire protection device for steel trusses according to claim 1, characterized in that, The fire extinguishing medium is water, a flame retardant or a dry powder fire extinguishing agent.

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