Nut with fireproof characteristic
By designing nuts with fire-resistant characteristics and using heat-resistant materials to seal and installation components, the problem of metal nuts being heat-softened in fires is solved, and the effect of reducing the degree of heat-receiving of nuts and improving the fire resistance of wooden buildings is achieved.
Patent Information
- Application Number
- CN202421904879.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-07
AI Technical Summary
In wooden buildings, metal nuts are softened by heat during fire, resulting in failure of the connection of wooden components, which in turn leads to failure of the house structure.
A nut with fire-resistant properties is designed, using a seal structure, which is made of heat-resistant material, and the seal is installed and tightened by mounting components (including connecting blocks and springs) to avoid direct contact with open flames from the nut.
By sealing and covering the nut, the possibility of the nut being heated is reduced, the degree of heat received by the nut is reduced, and the fire resistance of wooden buildings in fires is improved.
Smart Images
Figure CN222937080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuts, in particular to a nut with fire prevention characteristics. Background Art
[0002] A nut is a part that is thread - fitted with a bolt or screw rod and plays a fastening role.
[0003] In wooden buildings, metal screw rods and nuts are commonly used as connecting parts to connect wooden components such as wooden beams and columns. However, when a wooden building encounters a short - time fire, the wooden building is likely to have its structural failure or even collapse due to the fire. One of the reasons is that metal parts such as nuts and screw rods are heated when exposed to fire. The strength of metal parts at high fire temperature is only about 20% of the room - temperature strength. After being softened by heat, the metal parts fail, resulting in the failure of the connection of wooden components and ultimately the failure of the building structure. Content of the Utility Model
[0004] In order to reduce the heating degree of the screw rod, this application provides a nut with fire prevention characteristics.
[0005] The nut with fire prevention characteristics provided by this application adopts the following technical scheme:
[0006] A nut with fire prevention characteristics includes a matrix and a cover. The cover is arranged on the matrix and covers the matrix. An installation component is arranged on the cover. The installation component includes a connecting block and a spring piece. The connecting block is connected to the cover. At the position corresponding to the connecting block on the matrix, a feeding groove and a rotating groove are opened. The feeding groove is perpendicular to the rotating groove and communicates with the rotating groove. A limiting groove is opened on the side wall of the rotating groove. The spring piece is installed on the connecting block. When installing the cover, the connecting block is located in the rotating groove, and the spring piece is located in the limiting groove.
[0007] By adopting the above - mentioned technical scheme, during installation, the worker thread - fits the matrix on the screw rod, then slews the cover on the matrix and rotates the cover so that the connecting block enters the rotating groove through the feeding groove. During this process, the spring piece abuts against the top wall of the rotating groove and deforms until the spring piece enters the limiting groove, and the spring piece restores and fits against the inner wall of the limiting groove, thereby restricting the connecting block and realizing the installation of the cover. The worker uses the cover to shield the matrix and the screw rod, thereby avoiding direct contact between the screw rod and the matrix with external open fire, reducing the possibility of the screw rod being softened by heat, and reducing the heating degree of the screw rod.
[0008] Optionally, the bottom wall and the top wall of the rotating groove are both inclined. Taking the inner wall from the feeding groove to the rotating groove as the reference direction, the distance between the bottom wall of the rotating groove and the top wall of the matrix gradually increases. When the connecting block abuts against the inner wall of the rotating groove, the cover tightly presses against the wooden building.
[0009] By adopting the above technical solution, when the connecting block enters the inclined rotating groove, the cover descends and presses tightly against the surface of the wooden building, thus reducing the possibility of a gap remaining between the cover and the wooden building, and reducing the possibility of heat entering the interior of the cover through the gap and heating the matrix or the screw.
[0010] Optionally, an oil groove is provided on one side of the matrix close to the cover, and a plurality of inclined holes communicating with the threaded part of the matrix are formed in the oil groove.
[0011] By adopting the above technical solution, during long-term use, there is a possibility that the threaded part of the matrix rusts, making it difficult to loosen the matrix from the screw. The staff can pour lubricating oil through the oil groove, so that the lubricating oil enters the threaded part of the matrix through the inclined holes. After the lubricating oil penetrates the threaded part of the matrix, then use a tool to rotate the matrix. This will reduce the friction between the matrix and the screw, making it easier to loosen and remove the matrix, and improving the disassembly efficiency of the nut.
[0012] Optionally, a sealing filler is filled between the cover and the matrix.
[0013] By adopting the above technical solution, the sealing filler is used to seal the interior of the cover to wrap the end of the screw, reducing the possibility of the screw rusting on the one hand and further reducing the possibility of the screw being heated on the other hand.
[0014] Optionally, an installation ring groove is formed inside the matrix, and a nylon ring is installed in the installation ring groove. When the matrix is in threaded fit with the screw, the nylon ring deforms and fits against the surface of the screw.
[0015] By adopting the above technical solution, the nylon ring is used to increase the friction between the screw and the matrix, reducing the possibility of the matrix rotating due to vibration.
[0016] Optionally, the cover is prefabricated from a heat-resistant material.
[0017] By adopting the above technical solution, the cover prefabricated from a heat-resistant material can block the flame from contacting the matrix, and the heat-resistant material itself has poor thermal conductivity, which can better reduce the possibility of the internal matrix heating up.
[0018] Optionally, two clamping planes are provided on the matrix, and the two clamping planes are arranged oppositely.
[0019] By adopting the above technical solution, the clamping planes are used to facilitate the staff to clamp the matrix with a tool to facilitate the rotation of the matrix, improving the operability of the matrix.
[0020] Optionally, the surface of the matrix is coated with a heat-resistant and corrosion-resistant coating.
[0021] By adopting the above technical solution, the heat-resistant and corrosion-resistant coating is used to further improve the high temperature resistance and corrosion resistance of the matrix, which not only extends the service life of the matrix, but also reduces the thermal conductivity of the matrix and reduces the possibility of screw temperature rise.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] 1. During installation, the staff fits the mother body thread on the screw rod, then puts the sealing cover on the mother body and rotates the sealing cover to make the connection block enter the rotating groove through the feeding groove. During this process, the spring piece contacts the top wall of the rotating groove and deforms until the spring piece enters the limiting groove. The spring piece recovers and fits the inner wall of the limiting groove, thereby limiting the connection block and realizing the installation of the sealing cover. The staff uses the sealing cover to shield the mother body and the screw rod, thereby avoiding direct contact between the screw rod and the mother body with external open flames, reducing the possibility of the screw rod being softened by heat, and reducing the degree of heat exposure of the screw rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the nut with fireproof properties in the embodiment of the present application.
[0025] Figure 2 It is a cross-sectional view used to illustrate the nut structure in the embodiment of the present application.
[0026] Figure 3 It is a schematic diagram of the structure of the parent body in the embodiment of the present application.
[0027] Figure 4 It is an exploded diagram used to illustrate the nut structure in the embodiment of the present application.
[0028] Figure 5 This is a cross-sectional view used to illustrate the structure of the installation component in the embodiment of the present application.
[0029] Explanation of the reference numerals: 01, screw; 1, mother body; 11, oil groove; 12, inclined hole; 13, nylon ring; 14, feed groove; 15, rotating groove; 16, sealing filler; 17, clamping plane; 2, sealing cover; 3, mounting assembly; 31, connecting block; 32, spring sheet. DETAILED DESCRIPTION
[0030] The following is combined with Figures 1 - 5 This application is described in further detail.
[0031] The present application embodiment discloses a nut with fireproof properties. Figure 1 , Figure 2 and Figure 3, the nut with fireproof characteristics includes a matrix 1 and a cover 2. An oil groove 11 is formed on the matrix 1, and a number of inclined holes 12 are formed on the bottom wall of the oil groove 11. The end of the inclined hole 12 communicates with the threaded part of the matrix 1. The oil groove 11 and the inclined holes 12 are used for the flow of lubricating oil. An installation ring groove is formed inside the matrix 1, and a nylon ring 13 is installed in the installation ring groove. The nylon ring 13 is used to tightly press against the surface of the screw 01. Two clamping planes 17 are formed on the side wall of the matrix 1. The two clamping planes 17 are arranged oppositely, and the clamping planes 17 are used to facilitate the staff to rotate the matrix 1.
[0032] Refer to Figure 3 , Figure 4 and Figure 5 , the cover 2 is preformed from a heat-resistant material, such as: concrete, gypsum, cut logs, etc. In this embodiment, concrete is taken as an example. The cover 2 is arranged on the matrix 1 and covers the matrix 1 and the end of the screw 01. An installation component 3 is arranged between the matrix 1 and the cover 2. The installation component 3 includes a connecting block 31 and a spring piece 32. The connecting block 31 is a metal block. In this embodiment, 45 steel is taken as an example. A number of connecting blocks 31 are pre-set in the cover 2. In this embodiment, two are taken as an example. The spring piece 32 is welded on the connecting block 31. Feeding grooves 14 and rotating grooves 15 are formed at the positions of the matrix 1 corresponding to the connecting blocks 31. The feeding grooves 14 are perpendicular to the rotating grooves 15. The top wall and the bottom wall of the rotating groove 15 are both inclined. Taking the direction from the feeding groove 14 to the inner wall of the rotating groove 15 as the reference direction, the distance between the bottom wall of the rotating groove 15 and the top wall of the matrix 1 gradually increases. A limiting groove is formed on the top wall of the rotating groove 15.
[0033] When installing the cover 2, the staff inserts the connecting block 31 into the feeding groove 14 and rotates the cover 2 to make the connecting block 31 move in the rotating groove 15. During this process, the spring piece 32 abuts against the side wall of the rotating groove and deforms until the connecting block 31 abuts against the inner end of the rotating groove. The spring piece 32 resumes its original shape and fits against the inner wall of the limiting groove, thereby restricting the freedom of the connecting block 31 and realizing the installation of the cover 2.
[0034] Refer to Figure 3 , in order to improve the heat resistance of the matrix 1, the surface of the matrix 1 is coated with a heat-resistant and corrosion-resistant coating. In this embodiment, polytetrafluoroethylene coating is taken as an example.
[0035] Refer to Figure 2 and Figure 4 , in order to further reduce the possibility of the screw 01 being heated, a sealing filler 16 is filled between the cover 2 and the matrix 1. In this embodiment, asbestos sealing filler is taken as an example. One side of the sealing filler 16 is used to seal the inside of the cover 2, reducing the possibility of water penetrating into the cover 2 and rusting the screw 01 and the matrix 1. The other side is used to reduce the direct contact between the nut and the screw 01, further delaying the heating time of the screw 01.
[0036] The implementation principle of a nut with fireproof characteristics in an embodiment of the present application is as follows: During installation, the staff passes the screw rod 01 through two wood materials, then thread-fits the base body 1 onto the screw rod 01. Subsequently, lubricating oil is poured into the oil groove 11, and the connecting block 31 is inserted into the feeding groove 14. Then, the cover 2 is rotated. During this process, the spring piece 32 abuts against the side wall of the rotating groove and deforms until the connecting block 31 abuts against the inner end of the rotating groove. The spring piece 32 resumes its original shape and fits against the inner wall of the limiting groove, and the cover 2 presses tightly against the surface of the wooden building, realizing the installation of the cover 2.
[0037] The staff uses the cover 2 to shield the base body 1 and the screw rod 01, thereby preventing the screw rod 01 and the base body 1 from directly contacting external open flames, reducing the possibility of the screw rod 01 softening due to heat, and lowering the heat absorption degree of the screw rod 01.
[0038] The above are all preferred embodiments of the present application. Without limiting the protection scope of the present application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A fireproof nut, characterized in that: The invention comprises a mother body (1) and a sealing cover (2), wherein the sealing cover (2) is arranged on the mother body (1) and covers the mother body (1), and a mounting assembly (3) is arranged on the sealing cover (2), and the mounting assembly (3) comprises a connecting block (31) and a spring sheet (32), wherein the connecting block (31) is connected to the sealing cover (2), and a feed trough (14) and a rotation trough (15) are provided at a position corresponding to the connecting block (31) on the mother body (1), wherein the feed trough (14) is perpendicular to the rotation trough (15) and is connected to the rotation trough (15), and a limiting groove is provided on the side wall of the rotation trough (15), and the spring sheet (32) is mounted on the connecting block (31), and when the sealing cover (2) is installed, the connecting block (31) is located in the rotation trough (15), and the spring sheet (32) is located in the limiting groove.
2. The fireproof nut according to claim 1, characterized in that: The bottom wall and the top wall of the rotating groove (15) are both arranged at an inclination, and the distance between the bottom wall of the rotating groove (15) and the top wall of the mother body (1) gradually increases with the inner wall from the feeding groove (14) to the rotating groove (15) as the reference direction. When the connecting block (31) contacts the inner wall of the rotating groove (15), the sealing cover (2) contacts the wooden building.
3. The fireproof nut according to claim 1, characterized in that: The mother body (1) is provided with an oil groove (11), and the oil groove (11) is provided with a plurality of inclined holes (12) connected to the threaded parts of the mother body (1).
4. The fireproof nut according to claim 1, characterized in that: A sealing filler is filled between the sealing cover (2) and the matrix (1).
5. The fireproof nut according to claim 1, characterized in that: The mother body (1) has an installation ring groove inside, and a nylon ring (13) is installed in the installation ring groove. When the mother body (1) and the screw rod (01) are threadedly matched, the nylon ring (13) is deformed and fits the surface of the screw rod (01).
6. The fireproof nut according to claim 1, characterized in that: The sealing cover (2) is pre-set from heat-resistant material.
7. The fireproof nut according to claim 1, characterized in that: The mother body (1) is provided with two clamping planes (17), and the two clamping planes (17) are arranged opposite to each other.
8. The fireproof nut according to claim 1, characterized in that: The surface of the matrix (1) is coated with heat-resistant and corrosion-resistant coating.