An assembled keel for an elevator hall wall

Abstract

The utility model discloses a kind of assembly type keel for elevator hall wall surface, including keel stand, corner connecting piece and fixed structure, the keel stand is connected by corner connecting piece, multiple keel stand is formed into netlike frame keel structure, the keel stand is fixed by fixed structure and wall surface connection;The four corners of the keel stand are respectively provided with a clamping groove, the corner connecting piece includes fastener and adjusting bolt, the both ends of fastener are provided with clamping plate, adjusting bolt is arranged in fastener middle side, the clamping plate of the both ends of fastener is connected and fixed with the clamping groove of keel stand.

Description

Technical Field

[0001] This utility model belongs to the field of building decoration technology, and in particular relates to a prefabricated keel for elevator lobby walls. Background Technology

[0002] In traditional building decoration projects, the elevator lobby, as the face of public areas, has long relied on on-site welding for the installation of its wall decorations (such as stone, metal panels, wood veneer, etc.) – the keel frame system.

[0003] This construction method typically involves the following processes and issues:

[0004] 1. On-site welding is the primary method; construction workers need to cut the keel (mostly angle steel, channel steel, or square tube) on-site according to the actual dimensions, and then connect and fix the keel to the building's embedded parts (such as steel plates, reinforcing bars) or other keels by arc welding or gas welding. Welding is the main connection method.

[0005] 2. Reliance on professional skills and safety risks: Welding operations require skilled workers with professional qualifications, demanding high levels of skill. Furthermore, the welding process involves high temperatures, open flames, and arc radiation, generating large amounts of harmful fumes and metal spatter, posing significant fire hazards and threats to worker health (such as welder's pneumoconiosis and photokeratitis). Welding in densely populated or partially occupied buildings presents extremely high challenges and risks in safety management.

[0006] 3. Low construction efficiency and long cycle; the welding process is complex, including multiple steps such as positioning, spot welding, full welding, slag removal, weld grinding, and rust prevention treatment (usually requiring on-site application of anti-rust paint); each weld point requires time and is easily affected by worker condition and site conditions. The cumbersome process leads to low construction efficiency, occupies the elevator lobby for a long time, and affects the overall project progress.

[0007] 4. High difficulty in quality control; welding quality (such as weld fullness, undercut, porosity, etc.) is highly dependent on the welder's skill level and sense of responsibility, making on-site supervision difficult; the thermal deformation generated by welding can easily lead to unevenness and twisting of the keel frame, affecting the installation accuracy and final effect of the subsequent finishing layer. In addition, welding can damage the surface anti-corrosion layer (galvanized layer) of the keel (especially galvanized keel), and the weld points and heat-affected zones become weak points for later corrosion, affecting the structural durability.

[0008] 5. Environmental impact and coordination difficulties: Welding generates a large amount of smoke, noise, and bright light, polluting the working environment and causing disturbance to the surrounding area, especially in projects that are already occupied or in the finishing stage, where conflicts are particularly prominent. Hot work requires strict hot work permits and comprehensive fire monitoring measures, increasing the complexity of management and coordination.

[0009] 6. Poor material waste and flexibility; on-site welding has relatively low requirements for the dimensional accuracy of the keel (it can be cut and adjusted on-site), but it is also easy to waste materials due to measurement or cutting errors. Once welding is completed, it is extremely difficult to adjust or disassemble the frame structure, and it is inconvenient for later maintenance or modification. Utility Model Content

[0010] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a prefabricated keel for elevator hall walls. This utility model connects and fixes the keel columns with corner fasteners, realizing the welding-free operation of keel column connection, reducing the safety hazards of on-site welding, and shortening the construction cycle.

[0011] To achieve the aforementioned objectives of this utility model, the technical solution provided by this utility model patent is as follows:

[0012] A prefabricated keel for elevator lobby walls includes keel columns, corner connectors, and a fixing structure. The keel columns are connected by corner connectors, and multiple keel columns form a mesh frame keel structure. The keel columns are fixed to the wall by the fixing structure. Each of the four corners of the keel columns has a slot. The corner connector includes a clip and an adjusting bolt. The clip has a clip plate at both ends and an adjusting bolt on the side of the middle part of the clip. The clip plates at both ends of the clip are connected and fixed to the slots of the keel columns.

[0013] Furthermore, the keel column is a hollow cuboid, and the slots at the four corners of the keel column are U-shaped slots with the bottom of the slots facing the center of the keel column. The slots are set along the length of the keel column. The keel columns in the mesh frame keel structure are vertically connected and fixed.

[0014] Furthermore, the corner connector is a trapezoidal structure, with a retaining plate at each of the two sides of the corner connector and a cavity between the retaining plates. The retaining plates at the two sides of the corner connector are vertically arranged, and the adjusting bolt passes through the middle of the side of the corner connector. The adjusting bolt is used to adjust the size of the cavity on the corner connector.

[0015] Furthermore, when the keel columns are vertically connected, the corner connectors are installed at the connection points of the keel columns, so that the retaining plates at the two waists of the corner connectors are respectively connected and fixed to the two retaining slots on the same side of the keel columns, thereby making the keel columns vertically and fixedly connected.

[0016] Furthermore, the fixing structure includes a gripper and a fixing member. The gripper includes a first gripper and a second gripper. One end of the first gripper is provided with a claw member. The second gripper is generally L-shaped and one end of the second gripper is provided with a claw member. The other end of the second gripper and the other end of the first gripper are connected and fixed to the fixing member by bolts. The first gripper and the second gripper form a 90° angle.

[0017] Furthermore, the fastener is L-shaped in general, with elongated slots at both ends. One end of the fastener is connected and fixed to the claw, and the other end is fixed to the wall by bolts.

[0018] Based on the above solution, the prefabricated keel for elevator lobby walls of this utility model has achieved positive and beneficial results in practice:

[0019] This utility model discloses a prefabricated keel for elevator lobby walls, which uses corner fasteners to connect and fix the keel columns, achieving welding-free connection of the keel columns, reducing the safety hazards of on-site welding, and shortening the construction cycle. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the prefabricated keel used in the prefabricated keel of elevator hall walls according to this utility model.

[0021] Figure 2 This utility model relates to a prefabricated keel structure for use in elevator lobby walls, showing the connection between the prefabricated keel and the wall.

[0022] Figure 3 This is a side view of a clamping claw in a prefabricated keel used for elevator lobby walls according to this utility model.

[0023] Figure 4 This is a front view of a corner connector used in a prefabricated keel for elevator lobby walls, according to this utility model.

[0024] Figure 5 This is a side view of a corner connector in a prefabricated keel used in elevator lobby walls, according to this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific examples shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of this invention.

[0026] like Figure 1-5As shown, this utility model relates to a prefabricated keel for elevator lobby walls, including keel columns 1, corner connectors 2, and a fixing structure. The keel columns 1 are connected by the corner connectors 2, and multiple keel columns 1 form a mesh frame keel structure. The keel columns 1 are connected and fixed to the wall by the fixing structure. The four corners of the keel columns 1 are respectively provided with slots. The corner connectors 2 include clips and adjusting bolts. The clips are provided with clip plates at both ends and adjusting bolts on the side of the middle part of the clips. The clip plates at both ends of the clips are connected and fixed to the slots of the keel columns 1.

[0027] The keel column 1 is a hollow cuboid in shape. The slots at the four corners of the keel column 1 are U-shaped slots with the bottom of the slots facing the center of the keel column 1. The slots are set along the length of the keel column 1. The keel columns 1 in the mesh frame keel structure are vertically connected and fixed.

[0028] like Figure 4 and Figure 5 As shown, the corner connector 2 is a trapezoidal structure. The corner connector 2 has a retaining plate 21 at each of its two sides, and a cavity is provided between the retaining plates 21. The retaining plates 21 at the two sides of the corner connector 2 are vertically arranged. The adjusting bolt 22 passes through the middle of the side of the corner connector 2 and is used to adjust the size of the cavity on the corner connector 2.

[0029] When the keel columns 1 are vertically connected, the corner connectors 2 are installed at the connection points of the keel columns 1, so that the clamping plates 21 at the two waists of the corner connectors 2 are respectively connected and fixed to the two clamping slots on the same side of the keel columns 1, so that the keel columns 1 are vertically and fixedly connected.

[0030] like Figure 2 , Figure 3 As shown, the fixing structure includes a gripper 4 and a fixing member 3. The gripper 4 includes a first gripper 41 and a second gripper 42. One end of the first gripper 41 is provided with a claw. The second gripper 42 is generally L-shaped. One end of the second gripper 42 is provided with a claw. The other end of the second gripper 42 and the other end of the first gripper 41 are connected and fixed to the fixing member 3 by bolts. The first gripper 41 and the second gripper 42 form a 90° angle.

[0031] By setting up a fixed structure and corner connectors 2, welding-free erection and installation of the keel column 1 is achieved, avoiding the inconvenience of on-site welding and reducing safety hazards during on-site construction.

[0032] The fastener 3 is L-shaped in general. Each end of the fastener 3 is provided with a long strip-shaped slot. One end of the fastener 3 is connected and fixed to the claw 4, and the other end of the fastener 3 is fixed to the wall by bolts. The long strip-shaped slot on the fastener 3 makes it easy to adjust the installation position of the keel column 1 and facilitates installation.

[0033] The specific process for installing prefabricated keel is as follows: Based on the size of the elevator lobby wall, the mesh frame keel structure is erected and installed. Keel columns 1 are vertically connected, and the connection points of keel columns 1 are fixed using corner connectors 2 to achieve a fixed connection between the keel columns 1. By tightening the adjusting bolts 22 on the corner connectors 2, the clamping plates 21 on the corner connectors 2 are connected and fixed to the slots on the keel columns 1. According to the determined connection positions between the keel columns 1 and the wall, clamps 4 are installed on the corresponding keel columns 1. One end of the clamp 4 is fixedly connected to the slot on the keel column 1, and the other end of the clamp 4 is fixedly connected to one end of a fixing component 3 using bolts. The other end of the fixing component 3 is fixedly connected to the wall using expansion bolts, thus completing the installation of the keel columns 1.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A prefabricated keel for elevator lobby walls, characterized in that, It includes keel columns, corner connectors, and a fixing structure. The keel columns are connected by corner connectors, and multiple keel columns form a mesh frame keel structure. The keel columns are connected and fixed to the wall by the fixing structure. Each of the four corners of the keel column is provided with a slot. The corner connector includes a clip and an adjusting bolt. The clip has a clip plate at both ends and an adjusting bolt on the side of the middle part of the clip. The clip plates at both ends of the clip are connected and fixed to the slots of the keel column.

2. The prefabricated keel for elevator lobby walls according to claim 1, characterized in that, The keel column is a hollow cuboid, and the slots at the four corners of the keel column are U-shaped, with the bottom of the slots facing the center of the keel column. The slots are set along the length of the keel column. The keel columns in the mesh frame keel structure are vertically connected and fixed.

3. A prefabricated keel for elevator lobby walls according to claim 2, characterized in that, The corner connector is a trapezoidal structure. There are two retaining plates at the two sides of the corner connector, and a cavity is provided between the retaining plates. The retaining plates at the two sides of the corner connector are vertically arranged. The adjusting bolt passes through the middle of the side of the corner connector and is used to adjust the size of the cavity on the corner connector.

4. A prefabricated keel for elevator lobby walls according to claim 3, characterized in that, When the keel columns are vertically connected, the corner connectors are installed at the connection points of the keel columns, so that the retaining plates at the two waists of the corner connectors are respectively connected and fixed to the two retaining slots on the same side of the keel columns, so that the keel columns are vertically and fixedly connected.

5. A prefabricated keel for elevator lobby walls according to claim 1, characterized in that, The fixing structure includes a gripper and a fixing member. The gripper includes a first gripper and a second gripper. One end of the first gripper is provided with a claw. The second gripper is generally L-shaped and one end of the second gripper is provided with a claw. The other end of the second gripper and the other end of the first gripper are connected and fixed to the fixing member by bolts. The first gripper and the second gripper form a 90° angle.

6. A prefabricated keel for elevator lobby walls according to claim 5, characterized in that, The fastener is L-shaped in general. Long strip-shaped slots are provided at both ends of the fastener. One end of the fastener is connected and fixed to the claw, and the other end of the fastener is fixed to the wall by bolts.

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