A fire barrier for building deformation joints

Abstract

A fire barrier strip for building deformation joints, characterized in that it comprises a strip body (1) and an elastic support mechanism (2); the strip body (1) has a U-shaped cross section and is composed of an internal fire-resistant insulation core (11) and an outer surface protective layer (12); the elastic support mechanism (2) comprises a plurality of elastic elements (21), and the elastic elements (21) are arranged to act between two walls of the U-shaped cross section of the strip body (1), forcing the two walls of the U-shaped cross section of the strip body (1) to maintain a certain distance. The present invention relies on elastic expansion to be embedded in the building deformation joint, does not require additional structural fixation, is easy and quick to install, greatly shortens the construction period, and greatly reduces the construction cost.

Description

Technical Field

[0001] The invention relates to a building fireproof material, in particular to a fire barrier strip for building deformation joints. Background Art

[0002] Building deformation joints refer to structural joints reserved for deformation caused by external factors such as temperature changes, uneven foundation settlement, earthquakes, etc. It is a general term for expansion joints, settlement joints and seismic joints. Deformation joints run through the entire building from top to bottom. When a fire occurs, the fire and smoke can spread rapidly through this part, causing the fire partition to completely fail, which is very dangerous.

[0003] At present, the mainstream fire prevention measures for building expansion joints in China are to use double-layer stainless steel or galvanized thin plates 3 sandwiched with refractory fiber blankets 4 to form fire-blocking strips that are continuously welded or anchored and installed in the expansion joints to form fire barriers, such as Figure 1 As shown, there are the following defects:

[0004] 1. Since the steel shell of the fire barrier strip is made of hard material with low scalability, when the deformation joint is sheared or has a large horizontal or vertical displacement, it is easy to cause the shell to deform and the welding to fall off, resulting in fire barrier failure;

[0005] 2. The installation is difficult. When splicing the fire barrier strip in the length direction, it is necessary to cut the steel plate shell, overlap the internal fire-resistant fiber, and then seal the shell;

[0006] 3. Because it is a rigid structure, it cannot be installed in L-shaped, T-shaped, or cross-shaped deformation joints, and the construction cost is high;

[0007] 4. Poor maintainability and high maintenance cost;

[0008] 5. Poor seismic resistance;

[0009] 6. It is heavy and difficult to transport. Summary of the invention

[0010] The invention aims to provide a fire barrier strip for building deformation joints.

[0011] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fire barrier strip for building expansion joints, comprising a strip body and an elastic support mechanism; the cross-section of the strip body is U-shaped, and is composed of an internal fire-resistant insulation core and an outer surface protective layer; the elastic support mechanism comprises a plurality of elastic elements, and the elastic elements are arranged to act between the two walls of the U-shaped cross-section of the strip body, forcing the two walls of the U-shaped cross-section of the strip body to maintain a certain distance.

[0012] In the above solution, fixing points are respectively arranged on the inner side surfaces of the two walls of the U-shaped cross section of the strip-shaped body corresponding to the two ends of the elastic element, and the two ends of the elastic element are fixedly engaged with the fixing points.

[0013] In the above solution, the elastic element is a double torsion spring.

[0014] Furthermore, a hard side strip is fixedly provided on the inner side surfaces of the two walls of the U-shaped cross section of the strip-shaped body, and a clamping groove is provided on the hard side strip corresponding to the two ends of the elastic element as a clamping point, and the two ends of the elastic element are embedded in the clamping groove. More preferably, the cross section of the hard side strip has an inverted V-shaped arched portion in the middle, and the clamping groove is provided on the lower wall of the arched portion.

[0015] In the above solution, the fire-resistant heat-insulating core is composed of a double layer of an inner layer and an outer layer stacked together, and the edge of the outer layer of the fire-resistant heat-insulating core extends beyond the inner layer to form an extended section.

[0016] Furthermore, a fixing point is provided on the inner side surface of the extension section of the outer layer of the fire-resistant heat-insulating core corresponding to the two ends of the elastic element, and the two ends of the elastic element are fixedly engaged with the fixing point.

[0017] Furthermore, the elastic element is a double torsion spring.

[0018] Preferably, a hard edge strip is fixedly provided on the inner side surface of the extension section of the outer layer of the fireproof heat-insulating core, and a clamping groove is provided on the hard edge strip corresponding to the two ends of the elastic element as a clamping point, and the two ends of the elastic element are embedded in the clamping groove. More preferably, the cross section of the hard edge strip has an inverted V-shaped arched portion in the middle, and the clamping groove is provided on the lower wall of the arched portion.

[0019] The present invention has the following advantages:

[0020] 1. Since the strip body of the present invention is composed of a heat-insulating fire-resistant layer and a surface protective layer, and is elastically supported and embedded in the deformation joint of the building by an elastic support mechanism, no additional structural fixation is required, and the installation is convenient and fast, which greatly shortens the construction period and greatly reduces the construction cost;

[0021] 2. Similarly, since the strip body of the present invention is composed of a heat-insulating fire-resistant layer and a surface protective layer, and is elastically supported and embedded in the building deformation joint by an elastic support mechanism, the strip body and the building deformation joint are not rigidly connected, and the whole is a flexible structure, which can meet the large displacement of the deformation joint in all dimensional directions;

[0022] 3. The overlap of the continuous laying of the present invention can be installed in a male-female plug-in manner without the need for additional splicing and sealing treatment;

[0023] 4. The present invention can be prefabricated into L-shaped, T-shaped, and cross-shaped cross modules, which can be flexibly adapted to L-shaped, T-shaped, and cross-shaped deformation joints for on-site deployment and installation;

[0024] 5. The present invention has extremely low requirements for on-site installation space and can be well adapted to installation in narrow spaces and complex interlaced areas;

[0025] 6. The material of the present invention is light, and it is easy to carry and install;

[0026] 7. The present invention has strong repairability, convenient maintenance and low cost;

[0027] 8. The present invention is flexible and lightweight and can absorb system vibrations well. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the prior art;

[0029] Figure 2 It is a schematic diagram of the main view of an embodiment of the present invention;

[0030] Figure 3 for Figure 2 AA sectional view of FIG.

[0031] Figure 4 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0032] In the above attached figure:

[0033] 1. Strip body;

[0034] 11. fire-resistant insulation core; 111. inner layer; 112. outer layer; 1121. extension section;

[0035] 12. Surface protective layer;

[0036] 13. Hard edge strip; 131. Inverted V-shaped arch;

[0037] 14. Fixing point;

[0038] 2. Elastic support mechanism; 21. Elastic element;

[0039] 3. Stainless steel or galvanized sheet; 4. Refractory fiber blanket. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0041] Example: See Figure 2-Figure 4 As shown:

[0042] A fire barrier strip for building deformation joints comprises a strip-shaped main body 1 and an elastic supporting mechanism 2.

[0043] The strip-shaped body 1 has a U-shaped cross section and is composed of an internal fire-resistant heat-insulating core 11 and an external surface protective layer 12 .

[0044] The elastic support mechanism 2 includes a plurality of elastic elements 21 , and the elastic elements 21 are arranged to act between two walls of the U-shaped cross section of the strip body 1 , forcing the two walls of the U-shaped cross section of the strip body 1 to maintain a certain distance.

[0045] Specifically, these elastic elements 21 are arranged in an interval arrangement in the length direction of the strip body 1, and the inner side surfaces of the two walls of the U-shaped cross section of the strip body 1 are provided with fixing points 14 corresponding to the two ends of the elastic elements 21, and the two ends of the elastic elements are fixed with the fixing points 14. The fixing here can be the embedded matching of the groove and the protrusion, or it can be fixed with fasteners such as riveting. Preferably, a hard side strip 13 is fixedly provided on the inner side surfaces of the two walls of the U-shaped cross section of the strip body 1, and the hard side strip 13 is provided with a fixing groove corresponding to the two ends of the elastic element 21 as the fixing point 14, and the two ends of the elastic element 21 are embedded in the fixing groove for matching.

[0046] Preferably, the elastic element 21 adopts a double torsion spring to ensure stable elastic force and service life. In practice, the use of compression springs or even elastic sheets is also an alternative solution that can achieve the desired effect.

[0047] The hard edge strip 13 is preferably made of metal, and has an inverted V-shaped arched portion 131 in its middle in its cross section, and the clamping groove is provided on the lower wall of the inverted V-shaped arched portion 131 .

[0048] Specifically, the fire-resistant insulation core 11 is composed of an inner layer 111 and an outer layer 112 stacked together. The edge of the outer layer 112 of the fire-resistant insulation core 11 extends beyond the inner layer to form an extension section 1121. Specifically, the hard edge strip 13 is arranged on the inner side surface of the extension section 1121 of the outer layer 112 of the fire-resistant insulation core 11. The hard edge strip is fixed on the inner side surface of the extension section 1121, which can be fixed by rivets. Of course, other fixing schemes can also be used.

[0049] The fire-resistant insulation core 11 is composed of a double layer of an inner layer 111 and an outer layer 112 stacked together. The main advantage of this is that at both ends of the fire barrier strip, the inner layer 111 at one end can be extended to form a male end, while the outer layer 112 at the other end can be extended to form a female end, thus forming a male and female end structure at the end of the fire barrier strip, which is convenient for direct plug-in installation.

[0050] The fireproof insulation core 11 can be made of rock wool, silicate fiber wool and other materials, and the surface protection layer 12 can be made of high temperature resistant stainless steel foil or aluminum foil composite veneer, silicon cloth, glass fiber cloth and other materials according to the application occasion.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A fire barrier strip for building expansion joints, characterized in that: The invention comprises a strip body (1) and an elastic support mechanism (2); the strip body (1) has a U-shaped cross section and is composed of an internal fire-resistant heat-insulating core (11) and an outer surface protective layer (12); the elastic support mechanism (2) comprises a plurality of elastic elements (21), and the elastic elements (21) are arranged to act between two walls of the U-shaped cross section of the strip body (1), so as to force the two walls of the U-shaped cross section of the strip body (1) to maintain a certain distance; On the inner side surfaces of the two walls of the U-shaped cross section of the strip-shaped body (1), corresponding to the two ends of the elastic element (21), fixing points (14) are respectively provided, and the two ends of the elastic element are fixedly engaged with the fixing points (14); The elastic element (21) is a double torsion spring; A hard side strip (13) is fixedly provided on the inner side surfaces of the two walls of the U-shaped cross section of the strip-shaped body (1), and a clamping groove (14) is provided on the hard side strip (13) corresponding to the two ends of the elastic element (21) to serve as a clamping point (14), and the two ends of the elastic element (21) are embedded in the clamping groove for cooperation; The fire-resistant heat-insulating core (11) is composed of a double layer of an inner layer (111) and an outer layer (112) stacked together, and the edge of the outer layer (112) of the fire-resistant heat-insulating core (11) extends beyond the inner layer to form an extension section (1121); The strip-shaped body (1) is elastically supported by the elastic support mechanism (2) to be embedded in the deformation joint of the building, without the need for additional structural fixation; At both ends of the fire barrier strip, the inner layer (111) at one end is extended to form a male end, while the outer layer (112) at the other end is extended to form a female end.

2. The fire barrier strip for building expansion joints according to claim 1 is characterized in that: When viewed from the cross section of the hard edge strip (13), the middle portion thereof has an inverted V-shaped arched portion (131), and the clamping groove is provided on the lower wall of the inverted V-shaped arched portion (131).

3. The fire barrier strip for building expansion joints according to claim 1 is characterized in that: The hard edge strip (13) is fixedly provided on the inner side surface of the extension section (1121) of the outer layer of the fire-resistant heat-insulating core (11).

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