Wall connecting piece device capable of being detached
By designing a detachable wall tie device, using components such as mounting plates, connecting pipes, and expansion bolts, the problem of damage to openings after the removal of traditional wall ties is solved, enabling opening-free construction and efficient reuse, thus improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional wall ties leave openings after removal, leading to structural damage and water seepage risks. They are also inefficient to install and cannot be reused.
Design a detachable wall tie device, including mounting plate, connecting pipe, expansion bolts and clamps, accurately positioned by BIM modeling, drilled for installation, and connected by detachable horizontal tie rods and vertical rods, avoiding the need for pre-embedded steel pipes and adopting a reusable steel pipe structure.
It eliminates the need for post-construction sealing of openings, saves steel, avoids potential leakage risks, improves construction efficiency, enhances the flexibility and reusability of the equipment, simplifies the operation process, and saves construction costs.
Smart Images

Figure CN224063894U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wall tie technology, and in particular to a wall tie device that can be disassembled. Background Technology
[0002] Wall ties are an important component of scaffolding in building construction. They connect the scaffolding to the main structure, providing tie and stability, and are crucial for ensuring scaffolding safety. Traditional wall ties consist of steel pipes pre-embedded in the floor or shear wall, with horizontal steel pipes and fasteners connecting the scaffolding uprights to the vertically embedded pipes for ties. However, after the wall ties are removed, openings are left in the structural floor, shear wall, or exterior masonry. These openings require repair during subsequent construction, wasting manpower and resources. Furthermore, the openings can damage the building structure and pose a risk of water seepage into the exterior walls. Therefore, we propose a removable wall tie device to solve these problems. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wall-connecting device that can be disassembled.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A detachable wall tie device includes a mounting plate, a second connecting pipe welded to one side of the mounting plate, a first connecting pipe welded to one end of the second connecting pipe, and the first and second connecting pipes being arranged perpendicularly. A horizontal tie rod is installed at the upper end of the first connecting pipe via a first clamp. One end of the horizontal tie rod abuts against the upper end of the mounting plate, and a vertical pole is detachably installed on one side of the horizontal tie rod.
[0006] Preferably, the mounting plate has mounting holes at all four corners, and expansion bolts are inserted through the mounting holes.
[0007] Preferably, the first connecting pipe has two first through holes on both sides, and the two ends of the first clamp are installed in the first through holes by screws.
[0008] Preferably, the upper end of the mounting plate is provided with a notch, and one end of the horizontal tie rod abuts against the notch.
[0009] Preferably, the horizontal tie rod is installed on the vertical pole by a second clamp.
[0010] Preferably, one end of both the second connecting pipe and the first connecting pipe is inclined, and the two inclined surfaces are welded together.
[0011] Preferably, a fixing tube is welded to one side of the mounting plate, one end of the second connecting tube passes through the fixing tube, a plurality of second through holes are provided at equal intervals on the second connecting tube, a connecting bolt is provided through the fixing tube, and the connecting bolt passes through one of the second through holes.
[0012] The operation process of this utility model is as follows:
[0013] 1. BIM modeling
[0014] Before the wall ties are installed, the BIM center will pre-build the external scaffold model using the Glodon template and scaffold design software according to the construction plan, and the steel reinforcement software will build the three-dimensional model of the steel reinforcement components to accurately simulate the arrangement of the steel reinforcement of the wall beams and columns on site. Then, according to the installation requirements of the construction plan, the position and quantity of this new type of wall tie can be arranged to completely avoid the problem of collision between the drilling position and the steel reinforcement of the wall beams and columns, and at the same time, it can effectively maintain the connection with the external scaffold.
[0015] 2. Construction Preparation
[0016] Before constructing the external scaffolding, conduct technical briefings and other technical preparations, inspect the technical performance of the main construction equipment and materials, calculate the number of wall ties required for each floor and each facade based on the wind load borne by the external scaffolding, formulate construction procedure inspection procedures, and develop technical measures for construction in adverse weather (rainy season). All protective measures, safety facilities, construction equipment, and personnel entering the site must meet the requirements.
[0017] 3. Positioning
[0018] Based on the number of wall ties required for each floor and each facade, the specific tie positions are set on site. After determining the positions, the mounting plate of the wall tie is pressed tightly against the wall. Using white chalk, the specific positions of the four mounting holes are marked from the hole positions on the mounting plate 5. The wall tie is removed and a cross is drawn on the previously marked points to facilitate determining the position of the holes on the wall when drilling.
[0019] 4. Drilling
[0020] According to the center position of the marked "+", the on-site operators used a drill with a 12mm diameter drill bit to drill four 80mm deep holes in the wall in sequence. After the four fixed holes were drilled, a blower was used to clean the impurities and dust in the holes.
[0021] 5. Install wall ties
[0022] First, loosen the nuts on each expansion bolt to the end without removing them. Then, align the holes on the wall tie mounting plate with the four fixing holes on the wall. Insert the expansion bolts into the fixing holes one by one. Then, use a hammer to strike one end of the expansion bolt until the expansion bolt can no longer be pushed into the wall. Adjust the size of the wrench's teeth to match the size of the nuts. Next, use the wrench to tighten the nuts on the expansion bolts one by one to firmly fix the wall tie adapter to the wall.
[0023] 6. Connect the horizontal tie rod
[0024] A steel pipe of appropriate length is selected as the horizontal tie rod. This horizontal tie rod is set separately as part of the wall tie. First, one end of the horizontal tie rod is pressed against the wall surface. The intersection of the horizontal tie rod and the wall tie pipe arm is connected with the first clamp, and the fastener nut is tightened with an electric wrench. The position of the horizontal tie rod is adjusted to ensure that the horizontal tie rod and the vertical pole can be connected together with the second clamp. The right-angle fastener nut is tightened. When setting it up, a structure with a fixed pipe can be selected as needed, and precise position adjustment can be made to further improve the accuracy of the installation and enhance its adaptability. After the wall tie of each floor is installed, it is reported to the project department's safety department for inspection and acceptance. After the acceptance is qualified, it can be put into use.
[0025] This utility model has the following advantages:
[0026] 1. Simple structure and flexible placement. Its simplified design facilitates production, makes rational use of steel pipe waste on construction sites, and saves construction costs.
[0027] 2. During use, it can be installed according to the pre-set position, and can also be flexibly adjusted, added, or changed according to the actual situation on site. The wall tie can be reused after one production, and has a very high turnover rate.
[0028] 3. The operation process is simple and the construction efficiency is high, which speeds up the construction progress. The L-shaped wall tie is easy to operate. After a demonstration by relevant personnel, professionals can perform effective installation. Moreover, the installation time is short, which greatly saves labor time, improves work efficiency, and indirectly speeds up the construction progress.
[0029] 4. No need to seal scaffolding holes later, does not affect the quality of the exterior wall project. The installation of L-shaped wall ties will not create scaffolding holes, and there is no need to seal them. There is no quality risk of leakage in the exterior wall. Only the expansion bolts that protrude from the wall need to be cut after the L-shaped wall ties are removed.
[0030] In summary, this utility model avoids the need for pre-reservation or pre-embedding in beams and slabs, saving steel. It also avoids the need to leave scaffolding holes in corresponding positions on the exterior wall, which would require sealing later, leaving potential quality hazards such as leakage. Furthermore, it avoids delays in construction due to sealing scaffolding holes. It can also be reused, making it highly reusable. In addition, the operation process is simple, the construction efficiency is high, and the construction progress is accelerated. Attached Figure Description
[0031] Figure 1 This is a diagram showing the installation structure of this utility model;
[0032] Figure 2 This is a structural diagram of the present invention;
[0033] Figure 3 A structural diagram showing the notch design of this utility model;
[0034] Figure 4 This is a structural diagram of the second connecting pipe of this utility model;
[0035] Figure 5 This is a structural diagram of the installation of the fixed pipe and the second connecting pipe of this utility model.
[0036] In the diagram: 1 First through hole, 2 First connecting pipe, 3 Second connecting pipe, 4 Mounting hole, 5 Mounting plate, 6 Notch, 7 Second through hole, 8 Connecting bolt, 9 Fixing pipe, 10 First clamp, 11 Expansion bolt, 12 Second clamp, 13 Horizontal tie rod, 14 Vertical pole. Detailed Implementation
[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0038] Example 1
[0039] Reference Figure 1-4 A wall tie device that can be disassembled includes a mounting plate 5, a second connecting pipe 3 welded to one side of the mounting plate 5, a first connecting pipe 2 welded to one end of the second connecting pipe 3, and the first connecting pipe 2 and the second connecting pipe 3 are arranged vertically. The vertical arrangement can effectively transmit and disperse the forces in the horizontal and vertical directions.
[0040] A horizontal tie rod 13 is installed at the upper end of the first connecting pipe 2 via a first clamp 10. One end of the horizontal tie rod 13 abuts against the upper end of the mounting plate 5. A vertical rod 14 is detachably installed on one side of the horizontal tie rod 13. The first clamp 10 is made of high-strength cast iron, which has good clamping force and durability, and is convenient for adjustment and disassembly at different construction stages, thus improving the flexibility and reusability of the device.
[0041] Mounting plate 5 has mounting holes 4 at each of its four corners. Expansion bolts 11 are inserted through the mounting holes 4. The specifications of the expansion bolts 11 are selected according to the material of the wall and the load-bearing requirements. Generally, M12-M16 expansion bolts are selected to ensure that the mounting plate 5 can be firmly fixed to the wall.
[0042] The first connecting pipe 2 has two first through holes 1 on both sides. The two ends of the first clamp 10 are installed in the first through holes 1 by screws. The upper end of the mounting plate 5 has a notch 6. One end of the horizontal tie rod 13 abuts in the notch 6. The notch 6 is designed to position and limit the horizontal tie rod 13, preventing the horizontal tie rod 13 from displacing when subjected to force.
[0043] The horizontal tie rod 13 is installed on the vertical pole 14 through the second clamp 12. One end of the second connecting pipe 3 and the first connecting pipe 2 are both inclined, and the two inclined surfaces are welded to each other. The inclined welding structure can increase the strength and stability of the connection part and better adapt to forces in different directions.
[0044] Example 2
[0045] Reference Figure 5 The difference between this embodiment 2 and embodiment 1 is that this embodiment 2 also includes a fixing pipe 9 welded to one side of the mounting plate 5, one end of the second connecting pipe 3 passing through the fixing pipe 9, a plurality of second through holes 7 evenly spaced on the second connecting pipe 3, a connecting bolt 8 passing through the fixing pipe 9, and the connecting bolt 8 passing through one of the second through holes 7. According to the actual construction needs, the position of the second connecting pipe 3 can be precisely adjusted by adjusting the connecting bolt 8 passing through different second through holes 7, thereby improving the installation accuracy and adaptability of the wall tie device.
[0046] The operation process of this utility model is as follows:
[0047] 1. BIM modeling
[0048] Before the wall ties are installed, the BIM center will pre-build the external scaffold model using the Glodon template and scaffold design software according to the construction plan, and the steel reinforcement software will build the three-dimensional model of the steel reinforcement components to accurately simulate the arrangement of the steel reinforcement of the wall beams and columns on site. Then, according to the installation requirements of the construction plan, the position and quantity of this new type of wall tie can be arranged to completely avoid the problem of collision between the drilling position and the steel reinforcement of the wall beams and columns, and at the same time, it can effectively maintain the connection with the external scaffold.
[0049] 2. Construction Preparation
[0050] Before constructing the external scaffolding, conduct technical briefings and other technical preparations, inspect the technical performance of the main construction equipment and materials, calculate the number of wall ties required for each floor and each facade based on the wind load borne by the external scaffolding, formulate construction procedure inspection procedures, and develop technical measures for construction in adverse weather (rainy season). All protective measures, safety facilities, construction equipment, and personnel entering the site must meet the requirements.
[0051] 3. Positioning
[0052] Based on the number of wall ties required for each floor and each facade, the specific tie positions are set on site. After determining the positions, the mounting plate 5 of this wall tie is pressed tightly against the wall. The specific positions of the four mounting holes 4 are marked with white chalk from the hole positions on the mounting plate 5. The wall tie is removed and a cross is drawn on the previously marked points to facilitate determining the position of the holes on the wall when drilling.
[0053] 4. Drilling
[0054] According to the center position of the marked "+", the on-site operators used a drill with a 12mm diameter drill bit to drill four 80mm deep holes in the wall in sequence. After the four fixed holes were drilled, a blower was used to clean the impurities and dust in the holes.
[0055] 5. Install wall ties
[0056] First, loosen the nuts on each expansion bolt 11 to the end without removing them. Then, align the holes on the wall tie mounting plate 5 with the four fixing holes on the wall. Insert the expansion bolts 11 into the fixing holes one by one. Then, use a hammer to strike one end of the expansion bolt until the expansion bolt can no longer be pushed into the wall. Adjust the size of the wrench teeth to match the size of the nuts. Then, use the wrench to tighten the nuts on the expansion bolts 11 one by one to firmly fix the wall tie adapter to the wall.
[0057] 6. Connect the horizontal tie rod
[0058] A steel pipe of appropriate length is selected as the horizontal tie rod 13. This horizontal tie rod 13 is set separately as part of the wall tie. First, one end of the horizontal tie rod 13 is pressed against the wall surface. The intersection of the horizontal tie rod and the wall tie pipe arm is first connected with the first clamp 10. The fastener nut is tightened with an electric wrench. The position of the horizontal tie rod is adjusted to ensure that the horizontal tie rod 13 and the vertical pole 14 can be connected together with the second clamp 12. The right-angle fastener nut is tightened. When setting it up, a structure with a fixing pipe 9 can be selected as needed, and precise position adjustment can be made to further improve the accuracy of the installation and enhance the adaptability. After the wall tie of each floor is installed, it is reported to the project department's safety department for inspection and acceptance. After the acceptance is qualified, it can be put into use.
[0059] Application examples of this utility model:
[0060] During the main construction phase of the civil engineering and exterior decoration works of the Hongqiao Comprehensive Building Project in Changsha, Hunan, the external scaffolding used was a coupler-type steel pipe scaffolding. For the main structure height of 24m and below, the ground-supported steel pipe scaffolding was used, while for the section above 24m, the I-beam cantilevered steel pipe coupler scaffolding was used. Each section of cantilever height was 17.4-17.5m, that is, the number of cantilever layers was 5-6 layers. Rigid wall ties with steel pipe couplers were used. The project adopted this new type of wall tie, which is welded from two steel pipes with a length of 200mm and a steel plate with a side length of 150mm and a thickness of 6-8mm.
[0061] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A device for a wall tie that can be dismantled, comprising a mounting plate (5), characterised in that, One side of the mounting plate (5) is welded with a second connecting pipe (3), one end of the second connecting pipe (3) is welded with a first connecting pipe (2), and the first connecting pipe (2) and the second connecting pipe (3) are vertically arranged, the upper end of the first connecting pipe (2) is installed with a horizontal pull rod (13) through a first clamp (10), one end of the horizontal pull rod (13) abuts against the upper end of the mounting plate (5), and one side of the horizontal pull rod (13) is detachably installed with a vertical rod (14).
2. A wall tie device according to claim 1, wherein: The mounting plate (5) is provided with mounting holes (4) at four corners, and expansion bolts (11) are arranged in the mounting holes (4).
3. A wall tie device according to claim 1, wherein: The first connecting pipe (2) is provided with two first through holes (1) at two sides, and the first clamp (10) is installed in the first through holes (1) through screws.
4. A wall anchoring device according to claim 1, wherein: The upper end of the mounting plate (5) is provided with an opening (6), and one end of the horizontal pull rod (13) abuts against the opening (6).
5. A wall anchoring device according to claim 1, wherein: The horizontal pull rod (13) is installed on the vertical rod (14) through a second clamp (12).
6. A wall anchoring device according to claim 1, wherein: One end of the second connecting pipe (3) and the first connecting pipe (2) is arranged in an inclined manner, and the two inclined surfaces are welded with each other.
7. A wall anchoring device according to claim 1, wherein: One side of the mounting plate (5) is welded with a fixing pipe (9), one end of the second connecting pipe (3) penetrates the fixing pipe (9), a plurality of second through holes (7) are arranged on the second connecting pipe (3) at equal intervals, a connecting bolt (8) penetrates the fixing pipe (9), and the connecting bolt (8) penetrates one of the second through holes (7).