An external scaffolding wall connector mounted on the side of a beam
Patent Information
- Application Number
- CN202522434687.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-17
AI Technical Summary
传统连墙件大多通过在梁顶面预埋钢管或螺栓来实现连接，但这种顶面预埋方式往往在二次结构或反坎施工时需要预留洞口，容易造成渗漏和结构薄弱，同时在安装模板时需避让连墙件，增加了施工难度和工期
[0012]本实用新型通过在梁侧面设置锚固件并与螺杆配合，实现连墙件对连墙钢管的可靠固定，避免了梁顶面预留洞口带来的渗漏和二次施工障碍；螺杆外周安装若干扣件，且在连墙钢管圆周处设置固定套并在靠近梁侧一端设置限位部件，固定套有效增大扣件与钢管的接触面积，限位部件可在钢管受力时与扣件侧面抵接，显著提高了防滑能力和抗拉强度；固定套与扣件间交错布置的限位齿提高了摩擦力和咬合力，使连接更稳定。该结构不仅安装快捷、构件可重复周转使用、节约材料成本，还能在长期荷载、风荷载及施工振动下保持高强度的连接效果，从而大幅提高外脚手架整体的安全系数和施工效率。
Smart Images
Figure CN224870910U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wall tie technology, and in particular to a wall tie for external scaffolding installed on the side of a beam. Background Technology
[0002] In existing building construction, to ensure the overall stability of external scaffolding, wall ties are usually installed between the main structure and the scaffolding. Traditional wall ties are mostly achieved by pre-embedding steel pipes or bolts on the top surface of beams. However, this method of pre-embedding on the top surface often requires leaving openings during secondary structure or sill construction, which can easily lead to leakage and structural weaknesses. At the same time, the wall ties must be avoided when installing formwork, increasing construction difficulty and time. On the other hand, while existing wall ties installed on the side of beams can avoid interference from top surface construction, they generally suffer from insufficient tensile strength, a large number of fasteners, complex installation, low construction efficiency, and high cost. Some solutions using pre-embedded bolts or simple fasteners are prone to slippage at the ends of the wall tie steel pipes, making it impossible to ensure sufficient tightness with the main structure. Under long-term loads, wind loads, or vibrations, they are prone to loosening or even falling off, affecting scaffolding safety. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wall tie for external scaffolding that is installed on the side of a beam.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A wall tie for external scaffolding installed on the side of a beam includes an anchor installed inside the beam body. The anchor has a screw inside, and several fasteners are arranged around the outer periphery of the screw. A wall tie steel pipe is inserted through the fastener and fixed to it. A fixing sleeve is provided around the circumference of the wall tie steel pipe, and the outer wall of the fixing sleeve abuts against the inner wall of the fastener. A limiting component is provided at the end of the wall tie steel pipe near the beam body, and the limiting component is located between the fastener and the beam body.
[0006] Preferably, the number of fasteners is two.
[0007] Preferably, the anchor includes either a built-in embedded part or a post-expansion mechanism.
[0008] Preferably, the outer wall of the fixing sleeve is provided with spaced-apart limiting teeth two, and the inner wall of the fastener is provided with spaced-apart limiting teeth one, with limiting teeth one and limiting teeth two being staggered.
[0009] Preferably, the outer diameter of the limiting component is larger than the inner diameter of the fastener's opening, and the end face of the limiting component abuts against the end face of the fastener.
[0010] Preferably, the end of the screw away from the anchor is threaded with a nut, which can be screwed along the screw axis and tightened against the side of the limiting component by the fastener, so as to generate an adjustable preload and prevent the fastener from loosening or slipping with the wall-connecting steel pipe.
[0011] The beneficial effects of this utility model are as follows:
[0012] This invention achieves reliable fixing of the wall-connecting steel pipe to the wall tie by setting anchors on the side of the beam and cooperating with the screw rod, avoiding leakage and secondary construction obstacles caused by the reserved opening on the top surface of the beam. Several fasteners are installed on the outer periphery of the screw rod, and a fixing sleeve is set on the circumference of the wall-connecting steel pipe, with a limiting component at one end near the beam side. The fixing sleeve effectively increases the contact area between the fastener and the steel pipe, and the limiting component can abut against the side of the fastener when the steel pipe is under force, significantly improving the anti-slip ability and tensile strength. The staggered limiting teeth between the fixing sleeve and the fastener improve the friction and biting force, making the connection more stable. This structure is not only quick to install, the components can be reused, and material costs are saved, but it can also maintain a high-strength connection effect under long-term loads, wind loads, and construction vibrations, thereby greatly improving the overall safety factor and construction efficiency of the external scaffolding. Attached Figure Description
[0013] Figure 1 This is a structural cross-sectional view of an external scaffold wall tie installed on the side of a beam, as proposed in an embodiment of this utility model.
[0014] Figure 2 This is a cross-sectional view of a wall-connecting steel pipe and fixing sleeve structure for an external scaffolding wall-connecting component installed on the side of a beam, as proposed in an embodiment of this utility model.
[0015] In the diagram: 1-beam body, 2-anchor, 3-screw, 4-nut, 5-wall connecting steel pipe, 6-fixing sleeve, 7-fastener, 8-limiting tooth one, 9-limiting tooth two, 10-limiting component. Detailed Implementation
[0016] 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.
[0017] Reference Figures 1 to 2A wall tie for external scaffolding installed on the side of a beam includes an anchor 2 installed inside the beam body 1. The anchor 2 has a threaded connection to a screw 3, which securely fixes one end of the screw 3 to the beam body 1, ensuring a reliable connection between the wall tie and the concrete beam. Several fasteners 7 are axially arranged on the outer periphery of the screw 3. A wall tie steel pipe 5 is inserted through the fastener 7 and fixed thereto. The wall tie steel pipe 5 is connected to the steel pipe members of the external scaffolding, forming a connection channel and force transmission path between the external scaffolding and the building structure. The combination of screw 3, fastener 7, and wall-connecting steel pipe 5 achieves a firm anchoring connection between the outer support structure of the scaffolding and the main structure. A fixing sleeve 6 is provided at the circumference of the wall-connecting steel pipe 5 to prevent slippage under long-term tension or compression. The outer wall of the fixing sleeve 6 abuts against the inner wall of the fastener 7. A limiting component 10 is provided at the end of the wall-connecting steel pipe 5 near the beam body 1, located between the fastener 7 and the beam body 1. The fixing sleeve 6 increases the connection between the outer wall of the wall-connecting steel pipe 5 and the fastener 7. The increased contact area enhances friction and clamping force, allowing the fastener 7 to reliably lock onto the wall-connecting steel pipe 5 after the nut is tightened, preventing axial slippage of the wall-connecting steel pipe 5 under load. The limiting component 10 increases the outer diameter of one end of the wall-connecting steel pipe 5. When the wall-connecting steel pipe 5 is subjected to tension from the external scaffolding or wind load, the side of the limiting component 10 directly abuts against the side of the fastener 7, thus forming a second mechanical barrier when the fastener 7 undergoes slight displacement, preventing the wall-connecting steel pipe 5 from being pulled outwards or detaching from the fastener 7. This double-limiting structure significantly improves the overall anti-slip performance and safety factor of the wall-connecting components.
[0018] The fixing sleeve 6 and the limiting component 10 form a double protection. The fixing sleeve 6 achieves the first layer of anti-slip locking by increasing the contact area and friction; the limiting component 10 achieves the second layer of anti-disengagement protection through physical limiting. The two work together to ensure that the wall-connecting steel pipe 5 is always reliably engaged with the fastener 7 under stress, and also effectively avoids the risk of loosening, slippage or even falling off of traditional wall ties under long-term load or vibration.
[0019] The fixing sleeve 6 is welded and installed on the circumference of the wall-connecting steel pipe 5.
[0020] In a preferred embodiment of this utility model, the limiting component 10 can be an annular limiting ring integrally welded to the outer wall of the wall-connecting steel pipe 5, or it can be a limiting flange mechanically clamped.
[0021] As a preferred embodiment of this utility model, the number of fasteners 7 is two, which not only improves the overall tensile strength and anti-slip performance of the wall tie, but also enhances the safety redundancy of the structure and the convenience of construction adjustment, and can better meet the requirements of long-term stress and safe use of external scaffolding.
[0022] As a preferred embodiment of the present invention, the anchor 2 includes either a built-in embedded part or a rear expansion mechanism, for forming a stable anchor point on the side of the beam.
[0023] In a preferred embodiment of this utility model, the limiting component 10 is a limiting tube.
[0024] In a preferred embodiment of this utility model, the outer wall of the fixing sleeve 6 is provided with spaced-apart limiting teeth 2 9, and the inner wall of the fastener 7 is provided with spaced-apart limiting teeth 1 8. The limiting teeth 1 8 and limiting teeth 2 9 are staggered. When the nut 4 is tightened, the fastener 7 is pressed along the screw 3 toward the beam body 1. The limiting teeth 1 8 on the inner wall of the fastener 7 and the limiting teeth 2 9 on the outer wall of the fixing sleeve 6 are interlocked to form multi-point meshing. This meshing not only improves the contact friction coefficient, but also forms a mechanical barrier in the longitudinal direction. Even when subjected to wind load or vibration impact, it can effectively resist slippage or rotation.
[0025] As a preferred embodiment of this utility model, the tooth shape of the limiting tooth 8 can be rectangular, triangular or wavy, with the tooth tip slightly protruding inward. The tooth shape of the limiting tooth 9 matches the limiting tooth 8 and is distributed in a circumferential direction. The two sets of limiting teeth are arranged in an alternating manner in the axial direction, that is, the limiting tooth 8 and the limiting tooth 9 interlock and engage with each other, rather than simply tooth to tooth, so that the fastener 7 and the fixing sleeve 6 have a stronger biting force in both the radial and axial directions.
[0026] In a preferred embodiment of this utility model, the outer diameter of the limiting component 10 is larger than the inner diameter of the opening of the fastener 7, and the end face of the limiting component 10 abuts against the end face of the fastener 7.
[0027] In a preferred embodiment of this utility model, the end of the screw 3 away from the anchor 2 is threadedly connected to a nut 4. The nut 4 can be screwed along the axial direction of the screw 3 and is tightened against the side of the limiting component 10 by the fastener 7, so as to generate an adjustable preload and prevent the fastener 7 from loosening or slipping from the wall-connecting steel pipe 5. During on-site construction, the screw 3 is first reliably connected to the anchor 2, then the fastener 7 and the wall-connecting steel pipe 5 are installed in sequence, and finally the nut 4 is tightened. The axial preload applied by the nut 4 can establish a stable friction between the screw 3 and the fastener 7, so that the entire wall-connecting component remains in a tight state when pulled by external force.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wall tie for external scaffolding installed on the side of a beam, comprising an anchor (2) disposed within the beam body (1), a threaded rod (3) disposed inside the anchor (2), a plurality of fasteners (7) disposed around the outer periphery of the threaded rod (3), and a wall-connecting steel pipe (5) penetrating through the fasteners (7), characterized in that, A fixing sleeve (6) is provided at the circumference of the wall-connecting steel pipe (5). The outer wall of the fixing sleeve (6) abuts against the inner wall of the fastener (7). A limiting component (10) is provided at one end of the wall-connecting steel pipe (5) near the beam body (1). The limiting component (10) is located between the fastener (7) and the beam body (1).
2. The wall tie for external scaffolding installed on the side of a beam according to claim 1, characterized in that, The number of fasteners (7) is two.
3. The wall tie for external scaffolding installed on the side of a beam according to claim 1, characterized in that, The anchor (2) includes either a built-in embedded part or a rear expansion mechanism.
4. A wall tie for external scaffolding installed on the side of a beam according to claim 1, characterized in that, The outer wall of the fixed sleeve (6) is provided with spaced limiting teeth two (9), and the inner wall of the fastener (7) is provided with spaced limiting teeth one (8). The limiting teeth one (8) and the limiting teeth two (9) are arranged alternately.
5. A wall tie for external scaffolding installed on the side of a beam according to claim 1, characterized in that, The outer diameter of the limiting component (10) is larger than the inner diameter of the opening of the fastener (7), and the end face of the limiting component (10) abuts against the end face of the fastener (7).
6. A wall tie for external scaffolding installed on the side of a beam according to claim 1, characterized in that, The end of the screw (3) away from the anchor (2) is threaded with a nut (4).