A telescopic wall connecting member for an external scaffolding

Abstract

A kind of outer frame telescopic wall connecting piece for repair and reconstruction, including wall connecting plate and telescopic wall connecting rod, the telescopic wall connecting rod is vertically fixed in the middle of wall connecting plate, at least four reserved bolt holes are evenly provided with telescopic wall connecting rod as center on wall connecting plate, wall connecting plate is fixed on wall body by expansion bolt installed in reserved bolt hole.The interval of adjacent reserved bolt holes on the wall connecting piece of the device is similar to the thickness of the floor of the building under construction, the connecting steel plate can be directly connected with the corresponding position of the building floor through expansion bolt, avoiding the influence on the residents, the wall connecting piece is directly connected with the main floor in elevation, the connection reliability is greatly improved, the safety and stability problem of outer frame is solved, the length adjustment characteristic of telescopic wall connecting rod solves the problem that wall connecting piece needs to be welded according to the actual situation on site, and the device can be disassembled, recycled, greatly saves the cost and reduces material waste, and achieves the purpose of green construction.

Description

Technical Field

[0001] This utility model relates to the field of building facade renovation, and in particular to a telescopic wall tie for external scaffolding used for renovation and repair. Background Technology

[0002] In the field of building construction, scaffolding ties play a crucial role as key connectors between the external scaffolding and the building under construction. Their core function is to effectively resist the overturning force of the scaffolding, thereby tightly connecting the building under construction and the scaffolding erected during construction into a stable whole.

[0003] When the height of the scaffolding exceeds a certain limit and wall ties are not properly installed, the height of the free end at the top of the scaffolding will increase significantly. Under such circumstances, once a large wind load or construction load is encountered, the scaffolding is very likely to tilt, or even cause a serious overturning accident. In addition, if the scaffolding is not erected, the safety of construction workers during the operation cannot be effectively guaranteed. It can be seen that the erection of scaffolding is an indispensable part of the construction process, and when the height of the scaffolding is too high, it is imperative to install wall ties to ensure the anti-overturning performance of the scaffolding.

[0004] In conventional building construction, the common practice is to pre-embed wall ties around the building during construction, and then connect these pre-embedded parts to the external scaffolding using steel pipe fasteners. This construction method has become the first choice for many construction projects due to its relatively simple operation and good stability.

[0005] However, the aforementioned conventional construction methods face numerous limitations and are difficult to implement in ancient building restoration and building facade renovation projects. On the one hand, the main structure of ancient buildings and existing buildings awaiting facade renovation is already completed. At this point, secondary repairs or renovations to the building facade cannot be performed by pre-installing embedded parts around the building as in the case of new construction. On the other hand, the renovated building facade often features rich lines and uneven shapes, requiring wall ties to be connected to the existing building structure, and their length needs to be flexibly adjusted according to the actual conditions of the construction site. This unique construction environment and requirements pose a significant challenge to traditional scaffolding wall tie installation methods, thus necessitating the development of a new scaffolding wall tie solution suitable for ancient building restoration and building facade renovation projects. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a removable and reusable telescopic wall tie for repair and renovation, which is low in cost, improves installation efficiency, and extends construction progress.

[0007] To achieve the above objectives, this utility model first proposes a telescopic wall tie for repair and renovation, including a wall tie plate and a telescopic wall tie rod. The telescopic wall tie rod is vertically fixed in the middle of the wall tie plate. At least four reserved bolt holes are evenly arranged on the wall tie plate with the telescopic wall tie rod as the center. The wall tie plate is fixed to the wall by expansion bolts installed in the reserved bolt holes.

[0008] In this embodiment, the telescopic wall tie rod includes a fixed outer cylinder and an adjustable inner rod. The adjustable inner rod is coaxially slidably inserted into the adjustable inner rod. The adjustable inner rod is provided with a plurality of pin holes arranged along the axial direction. The fixed outer cylinder is provided with a plurality of through holes that match the pin holes along the axial direction. The fixed outer cylinder and the adjustable inner rod are locked together by fixing bolts installed in the through holes and the corresponding pin holes.

[0009] In this embodiment, three through holes are provided.

[0010] In this embodiment, the threaded end of the fixing bolt passes through the through hole and the corresponding pin hole, and a fixing washer, a fastening nut and an anti-slip nut are sequentially installed on the threaded end of the fixing bolt to lock the fixing bolt.

[0011] In this embodiment, the wall-connecting plate is made of steel plate.

[0012] In this embodiment, both the fixed outer cylinder and the adjusting inner rod are made of seamless steel pipe.

[0013] In this embodiment, the pin holes on the adjusting inner rod are arranged along the axial length, and the spacing between adjacent pin holes on the adjusting inner rod is consistent with the spacing between adjacent through holes on the fixed outer cylinder.

[0014] In this embodiment, the spacing between adjacent bolt holes on the wall tie plate is not greater than the thickness of the floor slab of the building under construction, and the outer diameter of the telescopic wall tie rod matches the outer diameter of the steel pipe with fasteners used for the external frame.

[0015] With the above structure, this utility model has the following advantages:

[0016] 1. Using wall ties to connect retractable wall ties to corresponding positions on the exterior walls and floors of existing buildings is equivalent to directly fixing the wall ties to the floor slab with expansion bolts. On the one hand, it eliminates the need to penetrate walls or windows, reducing secondary damage to the building walls during the installation of traditional wall ties, reducing the amount of subsequent repair work, and avoiding impact on residents. On the other hand, it prevents the impact of unstable exterior walls of ancient buildings and existing buildings on safety, and improves the firmness of the wall tie fixing.

[0017] 2. Pre-drilled bolt holes are provided at the four corners of the wall tie plate. Expansion bolts are used to ensure a reliable connection between the wall tie and the floor slab, thus ensuring the safety of the wall tie and the external frame structure.

[0018] 3. The inner rod can freely extend and retract within the fixed outer cylinder to control the overall length of the telescopic wall tie, allowing the length of the telescopic wall tie to be adjusted according to the uneven shape of the building facade, making it highly practical.

[0019] 4. The entire wall tie, the fixed outer cylinder, the adjusting inner rod, and the fixing bolts of this device can all be disassembled and reused, resulting in less wear and tear. This reduces costs while improving the efficiency of wall tie installation and helps to speed up the construction process.

[0020] In summary, the spacing between adjacent pre-drilled bolt holes on the wall tie of this utility model is similar to the thickness of the floor slab of the building under construction. The connecting steel plate can be directly connected to the corresponding position of the building floor slab using expansion bolts, avoiding any impact on residents. The wall tie is directly connected to the main floor slab on the facade, greatly improving the reliability of the connection and solving the problem of the safety and stability of the external scaffold. The adjustable length of the telescopic wall tie rod solves the problem of welding the wall tie according to the actual site conditions. Moreover, this device is detachable and reusable, greatly saving costs, reducing material waste, and achieving the goal of green construction. Attached Figure Description

[0021] Figure 1 This is a front view of the present invention.

[0022] Figure 2 This is a top view of the present invention.

[0023] Figure 3 This is the right view of the present invention.

[0024] In the attached diagram: 1. Wall connecting plate; 2. Pre-drilled bolt holes; 3. Fixed outer cylinder; 4. Adjusting inner rod; 5. Pin hole; 6. Fixing bolt; 7. Fixing washer; 8. Fastening nut; 9. Anti-slip nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figures 1 to 3 As shown, a telescopic wall tie for repair and renovation includes a wall tie plate 1 and a telescopic wall tie rod. The telescopic wall tie rod is vertically fixed in the middle of the wall tie plate 1. At least four reserved bolt holes 2 are evenly arranged on the wall tie plate 1 with the telescopic wall tie rod as the center. The wall tie plate 1 is fixed to the wall by expansion bolts installed in the reserved bolt holes 2.

[0028] like Figure 2 , 3 As shown, the telescopic wall tie rod includes a fixed outer cylinder 3 and an adjusting inner rod 4. The adjusting inner rod 4 is coaxially slidably inserted into the adjusting inner rod 4. The adjusting inner rod 4 is provided with a plurality of pin holes 5 arranged axially. The fixed outer cylinder 3 is provided with a plurality of through holes that match the pin holes 5. In this embodiment, there are three through holes. The fixed outer cylinder 3 and the adjusting inner rod 4 are locked together by fixing bolts 6 installed in the through holes and the corresponding pin holes 5. Further, the threaded end of the fixing bolt 6 passes through the through hole and the corresponding pin hole 5. Then, a fixing washer 7, a fastening nut 8 and an anti-slip nut 9 are installed sequentially on the threaded end of the fixing bolt 6 to lock the fixing bolt 6.

[0029] In this embodiment, the wall-connecting plate 1 is made of steel plate, and four reserved bolt holes 2 are reserved at the four corners of the wall-connecting plate 1. The reserved bolt holes 2 on the wall-connecting plate 1 are used to install expansion bolts. The expansion bolts fix the wall-connecting plate 1 to the corresponding position of the floor slab of the existing building. The length and width of the wall-connecting plate 1 are the same and slightly smaller than the thickness of the floor slab of the existing building, so as to ensure that the expansion bolts at the four corners can be 100% fixed in the position of the floor slab. The reserved bolt holes 2 on the wall-connecting plate 1 are symmetrically arranged left and right and up and down, and are the same size.

[0030] The fixed outer cylinder 3 is made of ordinary seamless steel pipe, which is the same as the fastener-type steel pipe for the outer frame. It is hollow. The fixed outer cylinder 3 is welded to the wall plate 1, and the connection is fully welded. The other end of the fixed outer cylinder 3 has three through holes with the same spacing between adjacent through holes.

[0031] The adjusting inner rod 4 is made of ordinary seamless steel pipe. The diameter of the adjusting inner rod 4 is smaller than that of the fixed outer cylinder 3, just enough to allow the adjusting inner rod 4 to be inserted into the fixed outer cylinder 3. The length of the adjusting inner rod 4 is increased according to the actual situation. The adjusting inner rod 4 is evenly provided with pin holes 5 along its entire length. The spacing between adjacent pin holes 5 is the same as the spacing between through holes. The through holes on the fixed outer cylinder 3 and the pin holes 5 on the adjusting inner rod 4 have the same diameter to ensure that the fixing bolts 6 of the adjusting inner rod 4 can be tightened in place.

[0032] In use, first weld the wall tie plate 1 to the fixed outer cylinder 3. Then, connect the wall tie plate 1 to the existing building floor slab using expansion bolts at the location where the wall tie needs to be installed. Use four expansion bolts. After the wall tie plate 1 is connected to the existing building, insert the adjusting inner rod 4 into the fixed outer cylinder 3 so that the fixed outer cylinder 3 and the adjusting inner rod 4 can be connected to the inner and outer uprights of the external frame, respectively. The adjustment length is based on the spacing of the fixing bolts 6 of the adjusting inner rod 4 as a module. Ensure that the pin hole 5 of the adjusting inner rod 4 is aligned with the three through holes on the fixed outer cylinder 3. After aligning the pin holes 5 of the two rods, use the fixing bolts 6 to fix the fixed outer cylinder 3 and the adjusting inner rod 4. All three through holes on the fixed outer cylinder 3 must be fixed with the fixing bolts 6 to ensure a firm connection between the fixed outer cylinder 3 and the adjusting inner rod 4. After the fixed outer cylinder 3 and the adjusting inner rod 4 are firmly fixed, use swivel fasteners to connect the fixed outer cylinder 3 and the adjusting inner rod 4 to the inner and outer uprights of the external frame, respectively. In this way, one wall tie is installed.

[0033] When dismantling the scaffold, remove the swivel couplers on the inner and outer uprights of the scaffold and release the four expansion bolts at the wall tie plate 1. The wall tie can then be removed and reused. If the length of the wall tie needs to be adjusted, simply adjust the depth of the inner adjusting rod 4 inserted into the outer fixing cylinder 3 and re-fix the inner adjusting rod 4 fixing bolt 6.

[0034] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A telescopic wall tie for external scaffolding used in repair and renovation, characterized in that: It includes a wall-connecting plate and a telescopic wall-connecting rod. The telescopic wall-connecting rod is vertically fixed to the middle of the wall-connecting plate. At least four reserved bolt holes are evenly arranged on the wall-connecting plate with the telescopic wall-connecting rod as the center. The wall-connecting plate is fixed to the wall by expansion bolts installed in the reserved bolt holes.

2. The telescopic wall tie for repair and renovation as described in claim 1, characterized in that: The telescopic wall tie rod includes a fixed outer cylinder and an adjustable inner rod. The adjustable inner rod is coaxially slidably inserted into the inner rod. The adjustable inner rod has multiple pin holes arranged axially. The fixed outer cylinder has multiple through holes arranged axially that match the pin holes. The fixed outer cylinder and the adjustable inner rod are locked together by fixing bolts installed in the through holes and the corresponding pin holes.

3. The telescopic wall tie for repair and renovation as described in claim 2, characterized in that: There are three through holes.

4. The telescopic wall tie for repair and renovation as described in claim 2, characterized in that: The threaded end of the fixing bolt passes through the through hole and the corresponding pin hole. A fixing washer, a fastening nut and an anti-slip nut are installed sequentially on the threaded end of the fixing bolt to lock the fixing bolt.

5. The telescopic wall tie for repair and renovation as described in claim 1, characterized in that: The wall ties are made of steel plates.

6. The telescopic wall tie for repair and renovation as described in claim 2, characterized in that: Both the fixed outer cylinder and the adjusting inner rod are made of seamless steel pipe.

7. The telescopic wall tie for external scaffolding used for repair and renovation according to claim 2, characterized in that: The pin holes on the adjusting inner rod are arranged along the axial length, and the spacing between adjacent pin holes on the adjusting inner rod is the same as the spacing between adjacent through holes on the fixed outer cylinder.

8. The telescopic wall tie for repair and renovation as described in any one of claims 1 to 7, characterized in that: The spacing between adjacent pre-reserved bolt holes on the wall ties shall not exceed the thickness of the floor slab of the building under construction.

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