Pre-embedded three-point protective scaffold wall connecting piece

Abstract

The utility model discloses a kind of pre-embedded three-point protective scaffold wall connecting pieces, including connecting unit, including main connection part, the main connection part two sides symmetrical arrangement have secondary connection part, the main connection part and two secondary connection parts are connected with concrete beam column structure and form three-point support;Adjusting unit, the adjusting unit connects main connection part and two secondary connection parts, for adjusting the spacing of two secondary connection parts and main connection part to avoid obstacle.The utility model solves the problems that existing scaffold wall connecting piece construction is complex, connection reliability is poor, later repair construction cost is higher and effect is poor, the scaffold wall connecting piece of the application is connected reliably with concrete beam column structure by three-point support, each part is quickly assembled, the operation is simple and convenient in installation and disassembly process, and most parts can be reused, the production cost is lower, can ensure that assembly is completed and timely used in construction site to improve production capacity.

Description

Technical Field

[0001] This utility model relates to the technical field of scaffolding wall ties, specifically to a three-point protective scaffolding wall tie that does not require pre-embedding. Background Technology

[0002] With the advancement of urban renewal projects, the wall ties for protective scaffolding erected on the facades of old existing buildings often fail to meet the required specifications, posing significant risks to the stability and safety of the scaffolding. Currently, in the field of existing building construction, the wall ties for protective scaffolding typically consist of a steel plate fixed to the building wall with expansion bolts, with a steel pipe welded to the plate and connected to the scaffolding for stability. Common types include a L-shaped structure with a single expansion bolt at one point, a small T-shaped structure with two expansion bolts at one point, and a large T-shaped structure with four expansion bolts at one point.

[0003] The aforementioned common wall ties suffer from poor reliability due to their small load-bearing area and are inconvenient to install. Often, pre-drilled holes are discarded due to fixed directional hole positions, making installation time-consuming and labor-intensive. Since steel plates require expansion bolts to be securely fixed to the existing building walls, and the size of the steel plate and the number of expansion bolt fixing points determine the reliability of the wall ties, the area occupied by the wall tie base cannot be formed in one go during exterior wall construction. This leads to secondary repairs after scaffolding removal, significantly impacting the appearance of the exterior wall finish and becoming a common quality defect. Removing expansion bolts fixed to the building's concrete beams and columns is also quite troublesome, and the removed bolts can rust and contaminate the finish layer. On-site repair measures involve using a ladder truck for secondary repairs after the protective scaffolding is removed, resulting in noticeable color differences and repair marks in the repaired areas. This repair method is costly and has an unsatisfactory appearance. Utility Model Content

[0004] The technical problem this utility model aims to solve is that existing scaffolding wall ties are complex to install and dismantle, have poor connection reliability, cannot be completed in one go, and result in high and ineffective repairs, leading to frequent rework and significant economic losses. The objective is to provide a three-point protective scaffolding wall tie that does not require pre-embedding.

[0005] This utility model is achieved through the following technical solution: A three-point protective scaffolding wall tie that does not require pre-embedding includes: The connecting unit includes a main connecting part, and two secondary connecting parts are symmetrically arranged on both sides of the main connecting part. The main connecting part and the two secondary connecting parts are all connected to the concrete beam-column structure to form a three-point support. An adjustment unit, which connects the main connecting part and two auxiliary connecting parts, is used to adjust the distance between the two auxiliary connecting parts and the main connecting part to avoid obstacles.

[0006] In some alternative embodiments, the adjustment unit includes a double-ear connecting cylinder, a single-ear connecting cylinder, and a connecting rod. The double-ear connecting sleeve is fitted onto the main connecting part; There are two single-ear connecting tubes, and the two single-ear connecting tubes are respectively sleeved with the two auxiliary connecting parts; There are two connecting rods, which are rotatably connected between the double-ear connecting cylinder and the corresponding single-ear connecting cylinder, respectively.

[0007] In some alternative embodiments, the end of the connecting rod is a U-shaped connecting plate, which is used to connect with a single-ear connecting tube or a double-ear connecting tube.

[0008] In some alternative implementations, the U-shaped connecting plate is detachably and rotatably connected to a single-ear or double-ear connecting cylinder via a locking gauge shaft.

[0009] In some alternative embodiments, the main connecting part includes a semi-threaded screw and a first self-destructing expansion head, the double-ear connecting sleeve is sleeved on the semi-threaded screw, and the end of the semi-threaded screw is detachably connected to the first self-destructing expansion head.

[0010] In some alternative embodiments, the two secondary connecting parts include a fully threaded screw and a second self-destructing expansion head, the single-ear connecting sleeve is sleeved on the fully threaded screw, and the end of the fully threaded screw is detachably connected to the second self-destructing expansion head.

[0011] In some alternative embodiments, both the first and second self-destructing expansion heads include a connecting section and an expansion section, the connecting section being provided with a threaded hole, and the expansion section being used for connection with a concrete beam-column structure.

[0012] In some alternative embodiments, the end of the semi-threaded screw away from the first self-destructing expansion head is provided with a pipe rack locking fastener for supporting the scaffold.

[0013] In some optional embodiments, the inner wall of the double-ear connecting cylinder is provided with an internal thread that mates with the half-threaded screw, and the inner walls of the two single-ear connecting cylinders are each provided with an internal thread that mates with the corresponding full-threaded screw.

[0014] In some alternative embodiments, a knob is connected to one end of both the full-thread screw and the two half-thread screws.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. The scaffolding wall tie of this application achieves a reliable connection with the concrete beam and column structure through three-point support, reducing the impact on construction.

[0016] 2. The scaffolding wall ties of this application are assembled quickly from individual parts, and the installation and disassembly processes are simple and convenient. Most parts are reusable, resulting in low manufacturing costs. This ensures timely deployment to the construction site after assembly, improving production capacity. It enhances the stability of the external wall protective scaffolding and reduces its impact on construction. It better meets the needs of the construction site, significantly improving construction safety and work efficiency, and reducing quality problems caused by secondary repairs.

[0017] 3. By setting up an adjustment unit, the distance between the two auxiliary connecting parts and the main connecting part can be adjusted to avoid obstacles, thereby ensuring the normal progress of the fixing operation. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the connection between the pre-embedded three-point protective scaffolding wall tie and the concrete beam-column structure of this utility model. Figure 3 This is a schematic diagram showing the connection between the connecting rod and the double-ear connecting cylinder of this utility model; Figure 4 This is a schematic diagram of the structure of either the first or second self-destructing expansion head.

[0019] The attached diagram shows the markings and corresponding component names: 1-Main connecting part, 11-Half-threaded screw, 12-First self-exploding expansion head, 2-Secondary connecting part, 21-Full-threaded screw, 22-Second self-exploding expansion head, 221-Connecting section, 222-Expansion section, 3-Adjusting unit, 31-Double-ear connecting cylinder, 32-Single-ear connecting cylinder, 33-Connecting rod, 331-U-shaped connecting plate, 4-Gauge shaft with locking buckle, 5-Pipe rack locking buckle, 6-Knob. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0021] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] In the description of this invention, the terms "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "high," "low," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0023] Currently, common wall ties suffer from poor reliability due to their small load-bearing area and are inconvenient to install. Often, pre-drilled holes are discarded due to fixed directional hole positions, making installation time-consuming and labor-intensive. Since steel plates require expansion bolts to be securely fixed to the existing building walls, and the size of the steel plate and the number of expansion bolt fixing points determine the reliability of the wall tie, the area occupied by the wall tie base cannot be formed in one go during exterior wall construction. This leads to secondary repairs after the scaffolding is dismantled, significantly impacting the appearance of the exterior wall finish – a common quality defect. Removing the expansion bolts fixed to the building is also quite troublesome, and the removed bolts can rust and contaminate the finish layer.

[0024] Based on the above problems, this embodiment provides a three-point protective scaffolding wall tie that does not require pre-embedding, such as... Figure 1 and Figure 2 As shown, the system includes a connection unit, which includes a main connection part 1 and two auxiliary connection parts 2 symmetrically arranged on both sides of the main connection part 1. The main connection part 1 and the two auxiliary connection parts 2 are all connected to the concrete beam and column structure to form a three-point support. Compared with the traditional single-point single expansion bolt fixed 7-shaped structure, single-point double expansion bolt fixed small T-shaped structure, and single-point four expansion bolt fixed large T-shaped structure, the three-point support form increases the reliability of the connection and reduces the impact on construction.

[0025] It also includes an adjustment unit 3, which connects the main connecting part 1 and two auxiliary connecting parts 2. The adjustment unit 3 is used to adjust the distance between the two auxiliary connecting parts 2 and the main connecting part 1 to avoid obstacles. The main connecting part 1 and the two auxiliary connecting parts 2 are arranged vertically to form a three-point support. The adjustment unit 3 connects the main connecting part 1 and the two auxiliary connecting parts 2. The distance is adjusted by moving the two auxiliary connecting parts 2. During this process, if there is an obstacle at the mounting point of the auxiliary connecting part 2, the position of the auxiliary connecting part 2 is adjusted by adjusting the adjustment unit 3 to avoid the obstacle.

[0026] Specifically, the adjustment unit 3 includes a double-ear connecting cylinder 31, a single-ear connecting cylinder 32, and a connecting rod 33. The double-ear connecting cylinder 31 is sleeved on the main connecting part 1; there are two single-ear connecting cylinders 32, each sleeved on one of the two corresponding secondary connecting parts 2; there are two connecting rods 33, each rotatably connected between the double-ear connecting cylinder 31 and its corresponding single-ear connecting cylinder 32. The double-ear connecting cylinder 31 is 270mm thick, and the single-ear connecting cylinder 32 is 70mm thick.

[0027] In this embodiment, to ensure that the main connecting part 1 and the secondary connecting part 2 are on the same vertical line, the connecting rod 33 is replaced accordingly while adjusting the angle. Specifically, when the distance between the two secondary connecting parts 2 and the main connecting part 1 increases, a longer connecting rod 33 is used to accommodate them. When the distance between the two secondary connecting parts 2 and the main connecting part 1 decreases, a shorter connecting rod 33 is used to accommodate them.

[0028] It is known that, as Figure 1 and Figure 3 As shown, the replacement method is as follows: the end of the connecting rod 33 is a U-shaped connecting plate 331, which is used to connect with the single-ear connecting cylinder 32 or the double-ear connecting cylinder 31. The U-shaped connecting plate 331 is detachably and rotatably connected to the single-ear connecting cylinder 32 or the double-ear connecting cylinder 31 through a locking gauge shaft 4. The locking gauge shaft 4 is a pin, and the lock limits the pin to prevent it from coming out, which ensures the normal rotation of the connecting rod 33 and facilitates the disassembly of the connecting rod 33.

[0029] Furthermore, the main connecting part 1 includes a semi-threaded screw 11 and a first self-destructing expansion head 12, with a double-eared connecting cylinder 31 sleeved on the semi-threaded screw 11, and the end of the semi-threaded screw 11 detachably connected to the first self-destructing expansion head 12. For example... Figure 4 As shown, the detachable connection method is as follows: the first self-destructing expansion head 12 includes a connecting section 221 and an expansion section 222, wherein the connecting section 221 is provided with an internal thread that engages with the thread of the half-thread screw 11.

[0030] Furthermore, the end of the semi-threaded screw 11 away from the first self-destructing expansion head 12 is provided with a pipe rack locking fastener 5 for supporting the scaffold, which is used for stable connection with the scaffold.

[0031] Furthermore, both auxiliary connecting parts 2 include a fully threaded screw 21 and a second self-destructing expansion head 22. A single-ear connecting cylinder 32 is sleeved on the fully threaded screw 21, and the end of the fully threaded screw 21 is detachably connected to the second self-destructing expansion head 22. The detachable connection is achieved by the second self-destructing expansion head 22 also including a connecting section 221 and an expansion section 222, wherein the connecting section 221 is provided with an internal thread that mates with the thread of the fully threaded screw 21.

[0032] In actual operation, the first self-destructing expansion head 12 and the second self-destructing expansion head 22 are both M20*100mm self-destructing expansion heads, the full-thread screw 21 is an M20 full-thread screw 21, and the half-thread screw 11 is an M20*450mm half-thread screw 11.

[0033] By using a detachable design, when the scaffolding wall ties need to be dismantled after use, there is no need to remove the first self-exploding expansion head 12 and the second self-exploding expansion head 22, thus avoiding secondary damage to the wall and eliminating the need for subsequent repairs.

[0034] Furthermore, a knob 6 is connected to one end of both the full-thread screw 21 and the two half-thread screws 11. The knob 6 facilitates the operation of the full-thread screw 21 and the half-thread screws 11 by the operator using the machine or manually.

[0035] It is also known that the inner wall of the double-ear connecting cylinder 31 in this embodiment is provided with an internal thread that mates with the half-threaded screw 11, and the inner walls of the two single-ear connecting cylinders 32 are each provided with an internal thread that mates with the corresponding full-threaded screw 21. This ensures a stable connection between the half-threaded screw 11 and the two full-threaded screws 21.

[0036] The specific working process of this utility model is as follows: First, adjust the positions of the first self-destructing expansion head 12 and the second self-destructing expansion head 22 using the connecting rod 33 to ensure that the first self-destructing expansion head 12 and the second self-destructing expansion head 22 are on the same vertical line. Then, drill holes in the concrete beam-column structure. By rotating the full-threaded screw 21, the full-threaded screw 21 drives the second self-destructing expansion head 22 to rotate, and the second self-destructing expansion head 22 is screwed into the hole. Then, the second self-destructing expansion head 22 is fixed in the hole. By rotating the half-threaded screw 11, the half-threaded screw 11 drives the first self-destructing expansion head 12 to rotate, and the first self-destructing expansion head 12 is screwed into the hole. Then, the first self-destructing expansion head 12 is fixed in the hole, achieving a reliable connection.

[0037] During disassembly, rotate the full-thread screw 21 and the half-thread screw 11 in the reverse direction. At this time, the half-thread screw 11 and the full-thread screw 21 will disengage the corresponding first self-destructing expansion head 12 or the second self-destructing expansion head 22 for subsequent use. The first self-destructing expansion head 12 or the second self-destructing expansion head 22 will remain in the hole.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A three-point protective scaffolding wall tie that does not require pre-embedding, characterized in that, include: The connecting unit includes a main connecting part, and two secondary connecting parts are symmetrically arranged on both sides of the main connecting part. The main connecting part and the two secondary connecting parts are all connected to the concrete beam-column structure to form a three-point support. An adjustment unit, which connects the main connecting part and two auxiliary connecting parts, is used to adjust the distance between the two auxiliary connecting parts and the main connecting part to avoid obstacles.

2. The wall tie for non-embedded three-point protective scaffolding as described in claim 1, characterized in that, The adjustment unit includes a double-ear connecting cylinder, a single-ear connecting cylinder, and a connecting rod. The double-ear connecting sleeve is fitted onto the main connecting part; There are two single-ear connecting tubes, and the two single-ear connecting tubes are respectively sleeved with the two auxiliary connecting parts; There are two connecting rods, which are rotatably connected between the double-ear connecting cylinder and the corresponding single-ear connecting cylinder, respectively.

3. The wall tie for non-embedded three-point protective scaffolding as described in claim 2, characterized in that, The end of the connecting rod is a U-shaped connecting plate, which is used to connect with a single-ear connecting tube or a double-ear connecting tube.

4. The wall tie for non-embedded three-point protective scaffolding as described in claim 3, characterized in that, The U-shaped connecting plate is detachably and rotatably connected to a single-ear or double-ear connecting cylinder via a locking gauge shaft.

5. The wall tie for non-embedded three-point protective scaffolding as described in claim 2, characterized in that, The main connecting part includes a semi-threaded screw and a first self-exploding expansion head. The double-ear connecting cylinder is sleeved on the semi-threaded screw, and the end of the semi-threaded screw is detachably connected to the first self-exploding expansion head.

6. The wall tie for non-embedded three-point protective scaffolding as described in claim 5, characterized in that, The two auxiliary connecting parts include a full-thread screw and a second self-exploding expansion head. The single-ear connecting sleeve is sleeved on the full-thread screw, and the end of the full-thread screw is detachably connected to the second self-exploding expansion head.

7. The wall tie for non-embedded three-point protective scaffolding as described in claim 6, characterized in that, Both the first and second self-destructing expansion heads include a connecting section and an expansion section. The connecting section is provided with a threaded hole, and the expansion section is used to connect with a concrete beam-column structure.

8. The wall tie for non-embedded three-point protective scaffolding as described in claim 5, characterized in that, The end of the semi-threaded screw away from the first self-destructing expansion head is equipped with a pipe rack locking device for supporting the scaffold.

9. The wall tie for non-embedded three-point protective scaffolding as described in claim 4, characterized in that, The inner wall of the double-ear connecting cylinder is provided with an internal thread that mates with the half-thread screw, and the inner walls of the two single-ear connecting cylinders are each provided with an internal thread that mates with the corresponding full-thread screw.

10. The wall tie for non-embedded three-point protective scaffolding according to claim 6, characterized in that, A knob is connected to one end of both the full-thread screw and the two half-thread screws.

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