Net hanging device for concrete spraying

Abstract

The utility model relates to a net hanging device for concrete spraying, and relates to the technical field of building construction, the net hanging device for concrete spraying comprises a steel bar net piece and a connecting piece, the connecting piece is used for being fixed to a structure to be subjected to concrete spraying, and the steel bar net piece is hung on the connecting piece; the connecting structure further comprises a pressing piece, and the pressing piece is pressed on the reinforcing mesh and fixedly connected with the connecting piece. Through the design of the connecting pieces and the pressing pieces, the reinforcing mesh is fixed to the structure, the concrete rebound phenomenon can be effectively reduced, and the construction quality and efficiency in the concrete spraying process are ensured; due to the design of the pressing piece, the reinforcing mesh can be evenly and stably pressed on a structure, the reinforcing mesh is prevented from tilting or bending in the spraying process, and therefore the stability and durability of the mesh hanging device are guaranteed; the construction process is simple and clear, operation is convenient and fast, the net hanging device can be rapidly used, the construction period is shortened, the site guidance difficulty is reduced, and economic benefits are improved while the construction quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a mesh hanging device for concrete spraying. Background Art

[0002] In recent years, with the rapid expansion of the urban subway industry, the demand for deep foundation pit engineering in the construction field has been increasing day by day. Against this background, domestic foundation pit excavation pile concrete spraying construction has gradually become a common practice; the spraying concrete process is a method of using a concrete sprayer to spray quick-setting concrete onto the surface of rocks or structures to strengthen and protect their structures.

[0003] Concrete spraying technology has many advantages. First of all, the construction operation is simple and convenient, without the need for a large number of formworks, and even no need to use or only single-sided formwork, thus saving a lot of formwork materials; secondly, concrete transportation, pouring and compaction can be completed in one go, speeding up the construction of lining projects; in addition, sprayed concrete has a high density, good strength and impermeability, and can save the amount of concrete used; in addition, through the feed hose, it can be sprayed to any thin-walled structure under construction at high altitude or in a narrow working area, and has strong adaptability; therefore, the support method of bored cast-in-place piles combined with inter-pile mesh sprayed concrete has gradually become the mainstream trend in construction projects.

[0004] However, the traditional inter-pile mesh shotcrete process faces a series of technical challenges. Regardless of whether dry or wet shotcrete is used, concrete rebound will occur, resulting in serious concrete waste. This not only increases the workload of concrete cleaning, but also increases construction costs and time. In addition, when fixing the steel mesh, the steel mesh often warps and bends, resulting in an uneven surface of the shotcrete, which in turn increases the workload of leveling the base surface when laying waterproof membranes later. Utility Model Content

[0005] In order to improve the problems of concrete rebound and steel mesh warping and bending when mesh spraying concrete, the present application provides a mesh hanging device for concrete spraying.

[0006] The present application provides a mesh hanging device for concrete spraying, which adopts the following technical solution:

[0007] A mesh hanging device for concrete spraying comprises a steel mesh and a connecting piece, wherein the connecting piece is used to be fixed on a structure to be sprayed with concrete, and the steel mesh is hung on the connecting piece; and further comprises a pressing piece, which is pressed on the steel mesh and connected and fixed to the connecting piece.

[0008] By adopting the above technical solution, during construction, first, the connecting piece is driven into and fixed on the structure to be sprayed with concrete, ensuring that the connecting piece is fixed on the structure, then, the steel mesh is hung on the connecting piece so that it is suspended on the surface of the structure and covers the entire spraying area, and then the steel mesh is pressed with a clamp to fix it, and the clamp is connected to the connecting piece to form a stable overall structure to ensure the installation stability of the steel mesh. Finally, when the mesh hanging device is completely fixed, the spraying of concrete can be carried out; in this process, the steel mesh is fixed to the structure through the design of the connecting piece and the clamp. It can effectively reduce the rebound phenomenon of concrete and ensure the construction quality and efficiency during the concrete spraying process; and the design of the clamping piece enables the steel mesh to be pressed evenly and stably on the structure to prevent it from warping or bending during the spraying process, thereby ensuring the stability and durability of the mesh device; the construction process of this application is simple and clear, and the operation is convenient. It can quickly fix and use the mesh device, shorten the construction period, and reduce the difficulty of on-site guidance. It can quickly and effectively guide on-site construction, and can effectively solve common problems in the concrete spraying process, ensure construction quality while improving economic benefits.

[0009] In a specific possible implementation scheme, the connecting member includes a plurality of hooks, and the plurality of hook arrays are arranged on the structure, one end of the plurality of hooks is fixed to the structure, and the other end passes through the steel mesh and is connected to the clamping member, and the steel mesh is hung on the plurality of hooks.

[0010] By adopting the above technical solution, during construction, several hook arrays are set on the structure and fixed to form a uniformly distributed hook grid, and then the steel mesh is hung on these hooks so that it is suspended on the surface of the structure to cover the entire spraying area, and then a clamping piece is used to press the steel mesh to fix it, and the clamping piece is connected to several hooks to form a stable overall structure; the setting of the hook array allows the steel mesh to be evenly suspended, ensuring uniformity and consistency during the spraying process, thereby further reducing the concrete rebound phenomenon and further preventing the steel mesh from warping or shifting during the spraying process.

[0011] In a specific feasible implementation scheme, the connecting member includes a plurality of expansion screws, and the plurality of expansion screws are arranged in an array on the structure, one end of the plurality of expansion screws is fixed to the structure, and the other end passes through the steel mesh and is connected to the clamping member, and the steel mesh is mounted on the plurality of expansion screws.

[0012] By adopting the above technical solution, during construction, a plurality of expansion screw arrays are set and fixed on the structure to form a uniformly distributed expansion screw grid, and then the steel mesh is hung on these expansion screws so that it is suspended on the surface of the structure to cover the entire spraying area, and then a clamping piece is used to press the steel mesh to fix it, and the clamping piece is connected to a plurality of expansion screws to form a stable overall structure; the arrangement of the expansion screw array allows the steel mesh to be evenly suspended, ensuring uniformity and consistency during the spraying process, thereby further reducing the concrete rebound phenomenon and further preventing the steel mesh from warping or shifting during the spraying process; since the expansion screws are usually made of corrosion-resistant materials, they have good durability and corrosion resistance, and can maintain the stability and reliability of the connector for a long time.

[0013] In a specific implementation scheme, the interval between any two adjacent hooks or the interval between any two adjacent expansion screws is within 0.5m-1.5m.

[0014] By adopting the above technical solution and utilizing the above interval design, more support points can be provided to enhance the stability of the overall structure. By arranging hooks or expansion screws in smaller intervals, the load can be distributed more evenly and the stress concentration of the structure can be reduced, thereby improving the bearing capacity and durability of the structure and effectively meeting the design and use requirements.

[0015] In a specific possible implementation scheme, the clamping member includes a plurality of angle steels, which are arranged along the length direction of the steel mesh and connected to the hooks or the expansion screws located in the same row, and the plurality of angle steels are pressed on the steel mesh.

[0016] By adopting the above technical scheme, angle steel is used as a clamping member, which is arranged along the length direction of the steel mesh and connected with the hooks or expansion screws in the same row. It can provide good support and clamping effect, realize uniform distribution of load, reduce the stress concentration of the structure, and enhance the stability of the overall structure; the angle steel pressed on the steel mesh can play a reinforcing role, enhance the rigidity and bearing capacity of the steel mesh, and improve the wind resistance, earthquake resistance and other capabilities of the overall structure, thereby effectively reducing the concrete rebound phenomenon and preventing the steel mesh from warping or bending during the spraying process; and as one of the common building materials, angle steel is easily available in the market, suitable for structures of various sizes and types, and has good versatility and applicability.

[0017] In a specific possible implementation mode, a plurality of the angle steels are evenly distributed along the height direction of the steel mesh.

[0018] By adopting the above technical solution, the uniform arrangement of angle steels can enhance the rigidity and strength of the steel mesh, so that it can better withstand external loads and deformations, thereby improving the bending and compression resistance of the structure. It can effectively limit the deflection and deformation of the steel mesh when subjected to stress, so that the structure maintains a stable shape and reduces the risk of possible structural failure or damage.

[0019] In a specific possible implementation mode, the angle steel is connected to the hook or the expansion screw by welding.

[0020] By adopting the above technical solution, a higher connection strength can be provided by welding connection, thereby ensuring a firm connection between the angle steel and the hook or expansion screw, and improving the durability and stability of the connection.

[0021] In a specific possible implementation manner, the hook is provided with a gasket, the angle steel frame is on the gasket, and the angle steel is connected to the gasket.

[0022] By adopting the above technical solution, the presence of the gasket can help disperse the force applied by the angle steel on the hook, reduce the local stress concentration of the hook, thereby improving the load-bearing capacity and stability of the hook. The angle steel frame on the gasket can increase the support area, making the contact between the angle steel and the hook closer, which can effectively prevent the angle steel from sliding or falling off on the hook, and improve the safety and reliability of the connection.

[0023] In a specific possible implementation manner, the angle steel is connected to the gasket by welding.

[0024] By adopting the above technical solution, a higher connection strength can be provided by welding connection, thereby ensuring a firm connection between the angle steel and the gasket and improving the durability and stability of the connection.

[0025] In a specific possible implementation manner, the angle steel is connected to the gasket by bolts, the bolts pass through the angle steel and the gasket, and one end of the bolt passing through the gasket is threadedly connected with a nut.

[0026] By adopting the above technical solution, during installation, the angle steel is placed on the hooks in the same row so that the bottom of the angle steel contacts the gasket of the hook to ensure that the gasket can evenly support the angle steel. Bolts are passed through one side of the angle steel and then through the gasket to be exposed on the other side of the gasket. Nuts are installed on the exposed side of the bolts and tightened to the bottom surface of the gasket to ensure the firmness and stability of the connection. Compared with welding connections, bolt connections have a simpler installation process and do not require special welding equipment and technology. They are suitable for on-site installation or emergency repairs. Bolted connections are suitable for various materials and structural forms and can meet the connection requirements of different engineering projects.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. This application fixes the steel mesh to the structure by designing hooks or expansion screws and angle steels, which can effectively reduce the rebound of concrete and ensure the construction quality and efficiency during the concrete spraying process; and the design of the clamping piece enables the steel mesh to be pressed evenly and stably on the structure, enhancing the rigidity and strength of the steel mesh, so that it can better withstand external loads and deformation, and prevent it from warping or bending during the spraying process, thereby ensuring the stability and durability of the mesh hanging device;

[0029] 2. The construction process of this application is simple and clear, and the operation is convenient. It can quickly realize the fixing and use of the hanging net device, shorten the construction period, and reduce the difficulty of on-site guidance. It can quickly and effectively guide on-site construction, and can effectively solve common problems in the concrete spraying process, ensuring the construction quality while improving economic benefits;

[0030] 3. The additional gasket in this application can help disperse the force applied by the angle steel on the hook, reduce the local stress concentration of the hook, and thus improve the load-bearing capacity and stability of the hook. The angle steel frame on the gasket can increase the support area, making the contact between the angle steel and the hook closer, which can effectively prevent the angle steel from sliding or falling off on the hook, and improve the safety and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the mesh hanging device for concrete spraying in Example 1 of the present application.

[0032] Figure 2 It is a diagram used to show the position relationship between the hanging net and the hook.

[0033] Figure 3 It is a side view used to show the reinforcement mesh, hooks and angle steel.

[0034] Figure 4 It is a structural schematic diagram of the mesh hanging device for concrete spraying in Example 2 of the present application.

[0035] Figure 5 It is a structural schematic diagram of the mesh hanging device for concrete spraying in Example 3 of the present application.

[0036] Explanation of the accompanying reference numerals: 1. steel mesh; 2. connecting piece; 21. hook; 3. pressing piece; 31. angle steel; 4. gasket; 5. bolt; 6. nut; 7. retaining pile. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] Embodiment 1

[0039] Reference Figure 1-3 The embodiment of the present application discloses a mesh hanging device for concrete spraying, which includes but is not limited to being used for the smoothness and thickness control of the sprayed mixed surface of various types of subway station foundation pit retaining structures. In this embodiment, the mesh hanging device of the present application is used for concrete spraying work between the retaining piles of foundation pit engineering;

[0040] The mesh hanging device includes a steel mesh 1 and a connecting member 2. The connecting member 2 is used to be fixed on the structure to be sprayed with concrete. In this embodiment, the connecting member 2 is fixed on the retaining pile 7, and the steel mesh 1 is hung on the connecting member 2.

[0041] It also includes a pressing member 3, which is pressed on the steel mesh 1 and is connected and fixed to the connecting member 2;

[0042] Before construction, the intrusion limit range of the retaining pile 7 is determined according to the construction drawings and relevant design requirements provided by the design institute. The intrusion limit range refers to the range within which the retaining pile 7 is allowed to intrude into the ground or interact with the surrounding structure. The total station is used to take point coordinates of the sprayed mix base surface of the on-site retaining pile 7 structure. In this embodiment, the coordinate error of each point on the base surface taken by the total station is ±5mm. The actual point coordinates obtained are summarized and compared with the construction drawings to obtain the intrusion limit data of each part and mark the parts that need to be processed on the retaining pile 7 according to the intrusion limit range. Then, each intrusion limit part is chiseled out by machinery to the design boundary line specified on the construction drawing, so as to ensure the accuracy of the intrusion limit processing result. In the actual process, it is necessary to take multiple coordinate points at different heights of the same plane position of the retaining pile 7 base surface to be constructed and conduct a review to improve the accuracy of the intrusion limit processing of each position of the sprayed mix base surface, and further realize accurate sprayed mix thickness control.

[0043] During construction, first, the connector 2 is driven into and fixed on the structure to be sprayed with concrete, ensuring that the connector 2 is fixed on the retaining pile 7, then the steel mesh 1 is hung on the connector 2, so that it is suspended on the surface of the structure and covers the entire spraying area, and then the clamping member 3 is used to press the steel mesh 1 to fix it, and the clamping member 3 is connected to the connector 2 to form a stable overall structure to ensure the installation stability of the steel mesh 1. Finally, when the mesh hanging device is completely fixed, the spraying concrete work can be carried out; the sprayed concrete is sprayed onto the treated pile surface and between the piles through the spraying machine, and the thickness is controlled according to the position of the clamping member 3, and after the spraying is completed, the spraying surface is finished, that is, the spraying surface is leveled and polished with tools (such as a shovel, a trowel), and the convex and uneven parts of the surface are removed to ensure that the surface is flat and beautiful;

[0044] In this process, the steel mesh 1 is fixed to the structure through the design of the connecting piece 2 and the clamping piece 3, which can effectively reduce the concrete rebound phenomenon and ensure the construction quality and efficiency during the concrete spraying process; and the design of the clamping piece 3 enables the steel mesh 1 to be pressed evenly and stably on the structure to prevent it from warping or bending during the spraying process, thereby ensuring the stability and durability of the mesh hanging device.

[0045] In this embodiment, the connecting member 2 includes but is not limited to a plurality of hooks 21 (it should be noted that the connecting members 2 in the drawings of the embodiments of the present application are all drawn with hooks 21 as schematic examples), and a plurality of hooks 21 are arranged in an array on the retaining pile 7. In this embodiment, a plurality of hooks 21 are driven into the pile body of the retaining pile 7 vertically, and the depth of the hooks 21 driven into the pile body and the exposed length are determined according to the design requirements. One end of the plurality of hooks 21 is fixed on the retaining pile 7, and the other end passes through the steel mesh 1 and is connected to the pressing member 3, and the steel mesh 1 is hung on the plurality of hooks 21;

[0046] In this embodiment, the connector 2 includes but is not limited to a plurality of expansion screws, and a plurality of expansion screw arrays are arranged on the retaining pile 7. In this embodiment, a plurality of expansion screws are driven into the pile body of the retaining pile 7 vertically, and the depth of the expansion screws driven into the pile body and the exposed length are determined according to the design requirements. One end of the plurality of expansion screws is fixed on the retaining pile 7, and the other end passes through the steel mesh 1 and is connected to the clamping member 3, and the steel mesh 1 is mounted on the plurality of expansion screws; since the expansion screws are usually made of corrosion-resistant materials, they have good durability and corrosion resistance, and can maintain the stability and reliability of the connector 2 for a long time;

[0047] The interval between any two adjacent hooks 21 or the interval between any two adjacent expansion screws is within 0.5m-1.5m. In this embodiment, the interval between any two adjacent hooks 21 or the interval between any two adjacent expansion screws includes but is not limited to 1m; through this interval design, more support points can be provided to enhance the stability of the overall structure. By arranging the hooks 21 or expansion screws in a smaller interval, the load can be distributed more evenly, the force concentration of the structure can be reduced, thereby improving the bearing capacity and durability of the structure, and effectively meeting the design and use requirements;

[0048] During construction, a plurality of hooks 21 or expansion screw arrays are set and fixed on the structure to form a uniformly distributed grid of hooks 21 or expansion screws, and then the steel mesh 1 is hung on these hooks 21 or expansion screws so that it is suspended on the surface of the retaining pile 7 to cover the entire spraying area, and then the clamping member 3 is used to press the steel mesh 1 to fix it, and the clamping member 3 is connected to a plurality of hooks 21 or expansion screws to form a stable overall structure; the arrangement of the hook 21 or expansion screw array allows the steel mesh 1 to be evenly suspended to ensure uniformity and consistency during the spraying process, thereby further reducing the concrete rebound phenomenon and further preventing the steel mesh 1 from warping or shifting during the spraying process; and by controlling the depth and exposed length of the hook 21 or expansion screw driven into the pile body, lines are formed through points, and then a control surface is formed, so that the effect of forming a surface from points can be achieved, thereby achieving overall control of the sprayed surface with full coverage.

[0049] The clamping member 3 includes a plurality of angle steels 31. In this embodiment, the angle steels 31 include but are not limited to angle steels of 2.2*2.5 mm. The angle steels 31 are arranged along the length direction of the steel mesh 1 and connected with the hooks 21 or expansion screws located in the same row. The plurality of angle steels 31 are pressed on the steel mesh 1. In this embodiment, the position of the angle steels 31 is determined according to the spray mix thickness required by the design drawings. The position can be checked and determined by an instrument, so as to achieve the purpose of controlling the spray mix thickness, and then achieve the purpose of controlling the overall flatness of the spray mix surface by forming a line into a surface;

[0050] Several angle steels 31 are evenly distributed along the height direction of the steel mesh 1; the even arrangement of the angle steels 31 can enhance the rigidity and strength of the steel mesh 1, so that it can better withstand external loads and deformations, thereby improving the bending and compression resistance of the structure, and can effectively limit the deflection and deformation of the steel mesh 1 when subjected to force, so that the structure maintains a stable shape and reduces the risk of possible structural failure or damage;

[0051] The angle steel 31 is connected to the hook 21 or the expansion screw by welding; the welding connection can provide a higher connection strength, ensure a firm connection between the angle steel 31 and the hook 21 or the expansion screw, and improve the durability and stability of the connection;

[0052] During construction, the angle steel 31 is set along the length direction of the steel mesh 1 and evenly arranged along the height direction of the steel mesh 1. The angle steel 31 is set on the hooks 21 or expansion screws in the same row and pressed on the steel mesh 1. The angle steel 31 is welded to the hooks 21 or expansion screws in the same row to form a stable overall structure. The angle steel 31 can provide good support and compression for the steel mesh 1, achieve uniform distribution of load, reduce stress concentration on the structure, and enhance the stability of the overall structure; the angle steel 31 pressed on the steel mesh 1 can play a reinforcing role, enhance the rigidity and bearing capacity of the steel mesh 1, and improve the wind resistance, earthquake resistance and other capabilities of the overall structure, thereby effectively reducing the concrete rebound phenomenon and preventing the steel mesh 1 from warping or bending during the spraying process; and as one of the common building materials, the angle steel 31 is easily available on the market, suitable for structures of various sizes and types, and has good versatility and applicability.

[0053] In this embodiment, an application case of the mesh hanging device for concrete spraying of the present application is as follows: the Huayuan Station of the DS5-TA05 section of the civil engineering project of Nanjing Metro Ningyang Line is constructed using this method; in the actual use of the test section, the manual visual control is changed to instrument layout control on site, which effectively reduces the use of manual labor and saves construction costs. The position of the angle steel 31 is directly compared and verified with the design and construction drawings to avoid later visual measurement errors, and the steel mesh 1 is fixed by the design of the clamping member 3 and the connecting member 2, which can solve the problems of concrete rebound, warping or bending of the steel mesh 1, and difficulty in controlling the flatness of the construction spray-mixed surface. It can also improve construction efficiency, effectively reduce construction costs, and meet the requirements of construction period goals and quality goals at the same time; through the coordinated use of instrument point measurement and design and construction drawings, the limit measurement of each point on the spray-mixed base surface can be quickly realized, thereby improving construction efficiency and shortening the construction period. It can also reduce the difficulty of on-site guidance, quickly and effectively guide on-site construction, ensure construction quality and improve economic benefits.

[0054] The implementation principle of the embodiment of the present application is as follows: the present application fixes the steel mesh 1 on the structure through the design of the hook 21 or the collision screw and the angle steel 31, effectively reduces the rebound phenomenon of concrete, ensures the construction quality and efficiency during the concrete spraying process, and the design of the clamping member 3 enables the steel mesh 1 to be pressed evenly and stably on the structure to prevent it from warping or bending during the spraying process, thereby ensuring the stability and durability of the mesh hanging device;

[0055] Before construction, the intrusion limit range of the retaining pile 7 is determined according to the construction drawings and relevant design requirements provided by the design institute. The intrusion limit range refers to the range within which the retaining pile 7 is allowed to intrude into the ground or interact with the surrounding structure. The total station is used to take point coordinates of the sprayed concrete base surface of the on-site retaining pile 7 structure, and the actual point coordinates obtained are summarized and compared with the construction drawings to obtain the intrusion limit data of each part and mark the parts that need to be processed on the retaining pile 7 according to the intrusion limit range. In this process, it is necessary to take multiple coordinate points at different heights of the same plane position of the base surface of the retaining pile 7 to be constructed and review them, and then use machinery to chisel away each intrusion limit part to the design boundary line specified on the construction drawing, so as to ensure the accuracy of the intrusion limit treatment result;

[0056] During construction, first, several hooks 21 or expansion screws are arranged on the structure in an array with an interval of 1m and fixed, several hooks 21 are driven into and fixed on the retaining piles 7 to form a grid of evenly distributed hooks 21, and then the steel mesh 1 is hung on these hooks 21 so that it is suspended on the surface of the retaining piles 7 to cover the entire spraying area, angle steels 31 are arranged along the length direction of the steel mesh 1 and evenly arranged along the height direction of the steel mesh 1, the angle steels 31 are erected on the hooks 21 in the same row and pressed on the steel mesh 1, and the angle steels 31 are welded to the hooks 21 in the same row.

[0057] A stable overall structure is formed to ensure the installation stability of the steel mesh 1. Finally, when the mesh hanging device is completely fixed, the spraying concrete work can be carried out; the spraying concrete is sprayed onto the treated pile surface and between the piles through the spraying machine, and the thickness is controlled according to the position of the clamping member 3. After the spraying is completed, the spraying surface is finished, that is, the spraying surface is leveled and polished with a tool shovel to remove the convex and uneven parts of the surface to ensure that the surface is flat and beautiful;

[0058] The construction process of this application is simple and clear, and the operation is convenient. It can quickly fix and use the hanging net device, shorten the construction period, reduce the difficulty of on-site guidance, quickly and effectively guide on-site construction, and effectively solve common problems in the concrete spraying process, thereby ensuring construction quality and improving economic benefits.

[0059] Embodiment 2

[0060] Reference Figure 4 The difference between this embodiment and the first embodiment is that the hook 21 is provided with a gasket 4, the angle steel 31 is mounted on the gasket 4, and the angle steel 31 is connected to the gasket 4; the angle steel 31 is welded to the gasket 4, and the welding connection can provide a higher connection strength, ensure the firm connection between the angle steel 31 and the gasket 4, and improve the durability and stability of the connection;

[0061] The additional gasket 4 can help disperse the force applied by the angle steel 31 on the hook 21, reduce the local stress concentration of the hook 21, and thus improve the load-bearing capacity and stability of the hook 21. The angle steel 31 is placed on the gasket 4 to increase the supporting area, making the contact between the angle steel 31 and the hook 21 closer, which can effectively prevent the angle steel 31 from sliding or falling off on the hook 21, thereby improving the safety and reliability of the connection.

[0062] Embodiment 3

[0063] Reference Figure 5 The difference between this embodiment and the second embodiment is that the angle steel 31 is connected to the gasket 4 by a bolt 5, the bolt 5 passes through the angle steel 31 and the gasket 4, and one end of the bolt 5 passing through the gasket 4 is threadedly connected with a nut 6, and the nut 6 abuts against the side of the gasket 4 away from the angle steel 31;

[0064] During installation, place the angle steel 31 on the hooks 21 in the same row so that the bottom of the angle steel 31 contacts the gasket 4 of the hook 21, ensuring that the gasket 4 can evenly support the angle steel 31. Use the bolt 5 to pass the bolt 5 from one side of the angle steel 31, then pass through the gasket 4, and expose it on the other side of the gasket 4. Install the nut 6 on the exposed side of the bolt 5 and tighten it to the bottom surface of the gasket 4 to ensure the firmness and stability of the connection.

[0065] Compared with the welding connection, the bolt 5 connection between the angle steel 31 and the gasket 4 has a simpler installation process and does not require special welding equipment and technology. It is suitable for on-site installation or emergency repair. The bolt 5 connection is suitable for various materials and structural forms, and can meet the connection requirements of different engineering projects. Through the bolt 5 connection, a stable connection is formed between the angle steel 31 and the gasket 4, which can withstand a certain amount of tension, pressure and shear force, ensuring the stability and safety of the structure.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mesh hanging device for concrete spraying, characterized in that: The invention comprises a steel mesh (1) and a connecting piece (2), wherein the connecting piece (2) is used to be fixed on a structure to be sprayed with concrete, and the steel mesh (1) is hung on the connecting piece (2); further comprising a pressing piece (3), wherein the pressing piece (3) is pressed on the steel mesh (1) and is connected and fixed to the connecting piece (2); the connecting piece (2) comprises a plurality of hooks (21), wherein the plurality of hooks (21) are arranged in an array on the structure, wherein one end of the plurality of hooks (21) is fixed on the structure, and the other end passes through the steel mesh (1) and is connected to the pressing piece (3), and the steel mesh (1) is hung on the plurality of hooks (21); or the connecting piece (2) comprises a plurality of expansion screws, wherein the plurality of expansion screws are arranged in an array on the structure, wherein one end of the plurality of expansion screws is fixed on the structure, and the other end passes through the steel mesh (1) and is connected to the pressing piece (3), and the steel mesh (1) is mounted on the plurality of expansion screws.

2. The mesh hanging device for concrete spraying according to claim 1 is characterized in that: The distance between any two adjacent hooks (21) or the distance between any two adjacent expansion screws is within 0.5m-1.5m.

3. The mesh hanging device for concrete spraying according to claim 1 is characterized in that: The pressing member (3) comprises a plurality of angle steels (31), each of which is arranged along the length direction of the steel mesh (1) and connected to the hooks (21) or the expansion screws located in the same row. The plurality of angle steels (31) are pressed onto the steel mesh (1).

4. The mesh hanging device for concrete spraying according to claim 3 is characterized in that: A plurality of the angle steels (31) are evenly distributed along the height direction of the steel mesh (1).

5. The mesh hanging device for concrete spraying according to claim 3 is characterized in that: The angle steel (31) is connected to the hook (21) or the expansion screw by welding.

6. The mesh hanging device for concrete spraying according to claim 3 is characterized in that: The hook (21) is provided with a gasket (4), the angle steel (31) is mounted on the gasket (4), and the angle steel (31) is connected to the gasket (4).

7. The mesh hanging device for concrete spraying according to claim 6, characterized in that: The angle steel (31) is connected to the gasket (4) by welding.

8. The mesh hanging device for concrete spraying according to claim 6, characterized in that: The angle steel (31) and the gasket (4) are connected via a bolt (5), wherein the bolt (5) passes through the angle steel (31) and the gasket (4), and one end of the bolt (5) passing through the gasket (4) is threadedly connected to a nut (6).

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