Non-embedded wall connecting device of existing building outer wall scaffold

Abstract

The utility model discloses a non-embedded wall connecting device for an outer wall scaffold of an existing building, which comprises a wall connecting plate, a fastener and a connecting steel pipe, and the wall connecting plate (4) comprises a channel steel (41) and two end plates (44); the channel steel is tightly attached to one indoor side face of the transverse ring beam in the axis direction of the transverse ring beam (2). The axis of the transverse ring beam is parallel to the longitudinal horizontal direction of the external scaffold; the two ends of the channel steel are respectively and fixedly connected with an end plate which is fixedly connected with each corresponding longitudinal ring beam (1); the axis of the longitudinal ring beam is perpendicular to the longitudinal horizontal direction of the external scaffold; angle steel (43) is welded on the lower side of the channel steel along the full length direction at an interval of 1.5 m; the corresponding upper part of each piece of angle steel adopts four fasteners (42) to fix the channel steel on the transverse ring beam; the connecting steel pipes (5) sequentially penetrate through the wall body below the transverse ring beam from the outside in the horizontal direction and then are fixedly connected with the wall connecting plate. The utility model solves the problem that the existing building wall body is connected with the external scaffold.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a non-embedded wall connection device for scaffolding on the exterior walls of existing buildings. Background Technology

[0002] Currently, the renovation of old urban residential communities in my country has become an important way to promote urban transformation and development. The aim is to attract population return, reshape urban culture, revitalize development momentum, and enhance urban value through the renovation of these communities, thereby boosting urban transformation and high-quality development. The renovation of the exterior facades of old residential buildings has also become a key focus in urban renewal. The original suspended platform construction method is no longer suitable for pitched roof structures, necessitating the use of ground-mounted external wall scaffolding. The conventional method for connecting the external wall scaffolding to the existing building involves drilling holes in the ring beam of the existing building with an electric hammer, inserting expansion bolts, welding a steel plate onto these bolts, welding the wall ties connecting the external wall scaffolding to this steel plate, and then connecting the wall ties to the external wall scaffolding.

[0003] Chinese patent document with announcement number CN217782818 U (patent number CN2022212981412, publication date November 11, 2022) discloses a wall-connecting device for existing external scaffolding, including a wall and scaffolding. The wall and steel plates are fixedly connected by expansion bolts through the wall. A long steel pipe is fixedly connected to the steel plates, and the other end of the long steel pipe is connected to the scaffolding by fasteners.

[0004] This type of existing scaffolding wall tie device has the following three shortcomings: 1. This method of using expansion bolts to fix steel plates through the ring beam can cause significant damage to the concrete structure of the ring beam, affecting the overall safety performance of the existing building structure; 2. This method of using expansion bolts to fix steel plates through the ring beam can easily cause the expansion bolts to be pulled out of the ring beam under the large tensile force of the scaffolding, thus failing to fully guarantee construction safety; 3. All components used in this type of existing scaffolding wall tie device are exposed outdoors, making them extremely prone to corrosion, inconvenient to inspect, maintain, and repair, and having poor turnover.

[0005] Therefore, it is necessary to optimize and improve the existing external scaffolding wall ties to avoid scaffolding instability or even collapse due to inapplicable connection methods. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing external scaffolding wall tie devices by providing a brand-new non-embedded wall tie device for existing building external scaffolding, thereby solving the problem that existing external scaffolding is prone to instability and collapse accidents.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a non-embedded wall-connecting device for existing building exterior wall scaffolding, comprising a wall-connecting plate, fasteners, and connecting steel pipes. The wall-connecting plate includes a channel steel and two end plates. The channel steel is tightly attached to one side of the transverse ring beam located indoors, along the axis of the transverse ring beam. The axis of the transverse ring beam is parallel to the longitudinal horizontal direction of the exterior scaffolding. Each end of the channel steel is fixedly connected to an end plate and fixedly connected to each corresponding longitudinal ring beam. The axis of the longitudinal ring beam is perpendicular to the longitudinal horizontal direction of the exterior scaffolding. An angle steel is welded at intervals of 1.5m along the lower side of the channel steel. The upper part of each angle steel is fixed to the transverse ring beam with four fasteners. The connecting steel pipe is fixedly connected to the longitudinal horizontal bar of the exterior scaffolding outdoors along a direction perpendicular to the wall. The connecting steel pipe passes through the opening in the wall below the transverse ring beam from the outside horizontally and is then fixedly connected to the wall-connecting plate.

[0008] Preferably, the fasteners include expansion bolts and fastening nuts. The threadless end of the expansion bolt passes through a hole in the channel steel in a vertical direction from the interior away from the transverse ring beam and enters the interior of the transverse ring beam and is anchored in the transverse ring beam. The fastening nut is fastened to the threaded end of the expansion bolt, and the channel steel is located between the transverse ring beam and the fastening nut.

[0009] Furthermore, the end plate includes a reinforcing plate and a base plate. The base plate is a square plate with a side length equal to the net distance between the upper and lower flange plates of the channel steel. The base plate is parallel to the longitudinal ring beam, and a reinforcing plate is welded to its upper and lower sides along a direction perpendicular to the base plate. The reinforcing plate is a triangular steel plate arranged symmetrically on the upper and lower sides, with one right-angled side welded to the base plate and the other right-angled side welded to the channel steel. The end plate is fixed to the longitudinal ring beam by four fasteners.

[0010] Furthermore, a baffle is welded to one end of the connecting steel pipe. The connecting steel pipe first passes through the mounting holes on the angle steel below the channel steel in a vertical direction from the end without the baffle, and then continues to pass through the opening in the wall below the transverse ring beam to be fixedly connected to the longitudinal horizontal bar of the external scaffold.

[0011] Furthermore, one end of the connecting steel pipe is provided with external threads. The connecting steel pipe with external threads passes through the opening on the wall below the transverse ring beam and the mounting hole on the angle steel in sequence from the outside along the horizontal direction, and is then fixed to the angle steel with two fixing nuts.

[0012] Due to the adoption of the above technical solutions, the technological advancements achieved by this utility model compared to the prior art are as follows: 1. The method of fixing the channel steel by partially wedging the ring beam with expansion bolts indoors, provided by this utility model, has little impact on the concrete structure of the ring beam and will not affect the overall safety performance of the existing building structure; 2. In addition to connecting with the transverse ring beam near the external scaffold, the wall-connecting device for the existing structure provided by this utility model also uses both ends of the channel steel to be connected with the longitudinal ring beam of the indoor scaffold perpendicular to the external wall, resulting in high tensile strength, strong stability, and sufficient safety performance; 3. All components used in the wall-connecting device for the existing structure provided by this utility model are installed indoors, making them less susceptible to corrosion from adverse outdoor environmental factors. Inspection, maintenance, upkeep, and dismantling are very convenient, with high turnover rate and reduced material consumption; 4. Using the above technical solutions, the connecting steel pipes in this solution are connected to the external scaffold through fasteners, resulting in a simple structure and convenient construction. The openings on the angle steel under the channel steel facilitate the installation of the connecting steel pipes. When disassembly is required, the expansion bolts can be removed directly, and then disassembly can be carried out step by step. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the non-embedded wall-connecting device for scaffolding on the exterior walls of existing buildings according to this utility model.

[0015] Figure 2 This is a front view of the non-embedded wall tie device for scaffolding on the exterior walls of existing buildings according to this utility model.

[0016] Figure 3 This utility model relates to a non-embedded wall tie device for scaffolding on the exterior walls of existing buildings. Figure 2 A cross-sectional view along line AA.

[0017] Figure 4 This is a schematic diagram of the second type of wall-connecting steel pipe structure for the non-embedded wall-connecting device of the external wall scaffolding of existing buildings according to this utility model.

[0018] Figure 5 This is a schematic diagram of the end plate structure of the wall-connecting plate of the non-embedded wall-connecting device for the exterior wall scaffolding of existing buildings according to this utility model.

[0019] Figure 6 This utility model relates to a non-embedded wall tie device for scaffolding on the exterior walls of existing buildings. Figure 2 A sectional view along line BB.

[0020] Figure 7 This utility model relates to a non-embedded wall tie device for scaffolding on the exterior walls of existing buildings. Figure 6 A cross-sectional view along the CC line.

[0021] In the diagram: 1-Longitudinal ring beam, 2-Transverse ring beam, 3-Longitudinal horizontal bar of external scaffolding, 4-Wall ties, 41-Channel steel, 411-Upper flange plate, 412-Lower flange plate, 42-Fasteners, 421-Expansion bolts, 422-Fastening nuts, 43-Angle steel, 431-Mounting holes, 44-End plates, 441-Reinforcing plates, 442-Base plates, 5-Connecting steel pipes, 51-Fixing nuts, 52-Threads, 53-Baffles, 6-Wall, 61-Opening. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", 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 utility model 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 limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 , Figure 2As shown, the wall-connecting plate 4 includes a channel steel 41 and two end plates 44; the channel steel 41 is closely attached to one side of the transverse ring beam 2 located indoors along the axis of the transverse ring beam 2; the axis of the transverse ring beam 2 is parallel to the longitudinal horizontal direction of the external scaffold; each end of the channel steel 41 is fixedly connected to an end plate 44 and fixedly connected to each corresponding longitudinal ring beam 1; the axis of the longitudinal ring beam 1 is perpendicular to the longitudinal horizontal direction of the external scaffold; an angle steel 43 is welded at intervals of 1.5m along the lower side of the channel steel 41; the upper part of each angle steel 43 is fixed to the transverse ring beam 2 with four fasteners 42; the longitudinal horizontal bar 3 of the external scaffold is fixed vertically to a connecting steel pipe 5; the connecting steel pipe 5 passes through the opening 61 on the wall 6 below the transverse ring beam 2 from the outside in a horizontal direction and is then fixedly connected to the wall-connecting plate 4.

[0026] like Figure 2 , Figure 4 As shown, the fastener 42 includes an expansion bolt 421 and a fastening nut 422. The threadless end of the expansion bolt 421 passes through a hole in the channel steel 41 in a vertical direction from the interior away from the transverse ring beam 2 and enters the interior of the transverse ring beam 2 and is anchored in the transverse ring beam 2. The fastening nut 422 is screwed into the threaded end of the expansion bolt 421. The channel steel 41 is located between the transverse ring beam 2 and the fastening nut 422. Tightening the fastening nut 422 can firmly fix the channel steel 41 to the transverse ring beam 2.

[0027] like Figure 5 As shown, the end plate 44 includes a reinforcing plate 441 and a base plate 442. The base plate 442 is a square plate with a side length equal to the net distance between the upper flange plate 411 and the lower flange plate 412 of the channel steel 41. The base plate 442 is parallel to the longitudinal ring beam 1. A reinforcing plate 441 is welded to its upper and lower sides along the direction perpendicular to the base plate. The reinforcing plate 441 is a triangular steel plate arranged symmetrically on the upper and lower sides. One right-angled side is welded to the base plate 442, and the other right-angled side is welded to the channel steel. The end plate 44 is fixed to the longitudinal ring beam 1 by four fasteners 42.

[0028] like Figure 3 As shown, a baffle 53 is welded to one end of the connecting steel pipe 5. The end of the connecting steel pipe 5 without the baffle passes through the mounting hole 431 on the angle steel 43 below the channel steel 41 in the vertical direction, and then continues to pass through the opening 61 on the wall 6 below the transverse ring beam 2 and is fixedly connected to the longitudinal horizontal bar 3 of the external scaffold.

[0029] like Figure 4As shown, one end of the connecting steel pipe 5 is provided with an external thread 52. The connecting steel pipe with the thread passes through the opening 61 on the wall 6 below the transverse ring beam 2 and the mounting hole 431 on the angle steel 43 in a horizontal direction from the outside, and is then fixed to the angle steel 43 by two fixing nuts 51.

[0030] In practice, firstly, an opening 61 is made in the wall 6 below the transverse ring beam 2 of the existing building using a hole saw. This opening is adapted to the diameter of the connecting steel pipe 5. A connecting steel pipe 5 is then fixedly connected to the longitudinal horizontal bar 3 of the external scaffolding using fasteners or bolts or other methods. One end of this connecting steel pipe 5 is fitted with an external thread 52. This threaded connecting steel pipe passes horizontally from the outside through the opening 61 in the wall 6 below the transverse ring beam 2 into the interior. A channel steel 41 is attached tightly to one side of the transverse ring beam 2 located indoors, along the axis of the transverse ring beam 2. The axis of the transverse ring beam 2 is parallel to the longitudinal horizontal direction of the external scaffold. An end plate 44 is fixedly connected to each end of the channel steel 41 and to the corresponding longitudinal ring beam 1. The axis of the longitudinal ring beam 1 is perpendicular to the longitudinal horizontal direction of the external scaffold. An angle steel 43 is welded at 1.5m intervals along the lower side of the channel steel 41. Four fasteners 42 are used to fix the channel steel 41 to the transverse ring beam 2 at the upper part of each angle steel 43. A connecting steel pipe 5, which enters from the outside, is then passed through the mounting holes 431 on the angle steel 43 below the channel steel 41 and fixed to the angle steel 43 using two fixing nuts 51.

[0031] The above specific examples illustrate the principles and implementation methods of this utility model in detail. These embodiments are only used to help understand the core technical content of this utility model and are not intended to limit the scope of protection of this utility model. The technical solution of this utility model is not limited to the above specific embodiments. Based on the above specific embodiments of this utility model, any improvements and modifications made to this utility model by those skilled in the art without departing from the principles of this utility model should fall within the patent protection scope of this utility model.

Claims

1. A non-embedded wall connecting device for external wall scaffold of existing building, comprising a wall connecting plate, fasteners and connecting steel pipes, characterized in that: The wall ties (4) include a channel steel (41) and two end plates (44); the channel steel (41) is closely attached to one side of the transverse ring beam (2) located indoors along the axis of the transverse ring beam (2); the axis of the transverse ring beam (2) is parallel to the longitudinal horizontal direction of the external scaffold; each end of the channel steel (41) is fixedly connected to an end plate (44) and fixedly connected to each corresponding longitudinal ring beam (1); the axis of the longitudinal ring beam (1) is perpendicular to the longitudinal horizontal direction of the external scaffold; the channel steel (41) An angle steel (43) is welded at intervals of 1.5m along the lower side of the wall. The upper part of each angle steel (43) is fixed to the transverse ring beam (2) with four fasteners (42). The connecting steel pipe (5) is fixedly connected to the longitudinal horizontal bar (3) of the outdoor scaffolding along the direction perpendicular to the wall (6). The connecting steel pipe (5) passes through the opening (61) on the wall (6) below the transverse ring beam (2) from the outside in the horizontal direction and is fixedly connected to the wall plate (4).

2. The non-embedded wall connecting device for existing building outer wall scaffold according to claim 1, characterized in that: The fastener (42) includes an expansion bolt (421) and a fastening nut (422). The threadless end of the expansion bolt (421) passes through a hole in the channel steel (41) in a vertical direction from the interior away from the transverse ring beam (2) and enters the interior of the transverse ring beam (2) and is anchored in the transverse ring beam (2). The fastening nut (422) is fastened to the threaded end of the expansion bolt (421). The channel steel (41) is located between the transverse ring beam (2) and the fastening nut (422).

3. The non-embedded wall connecting device for existing building outer wall scaffold according to claim 1, characterized in that: The end plate (44) includes a reinforcing plate (441) and a base plate (442). The base plate (442) is a square plate with a side length equal to the net distance between the upper flange plate (411) and the lower flange plate (412) of the channel steel. The base plate (442) is parallel to the longitudinal ring beam (1). A reinforcing plate (441) is welded to its upper and lower sides along the direction perpendicular to the base plate. The reinforcing plate (441) is a triangular steel plate arranged symmetrically on the upper and lower sides. One right-angled side is welded to the base plate (442), and the other right-angled side is welded to the channel steel (41). The end plate (44) is fixed to the longitudinal ring beam (1) by four fasteners (42).

4. The non-embedded wall connecting device for existing building outer wall scaffold according to claim 1, characterized in that: A baffle (53) is welded to one end of the connecting steel pipe (5). The connecting steel pipe (5) first passes through the mounting hole (431) on the angle steel (43) below the channel steel (41) in the vertical direction from the end without the baffle, and then continues to pass through the opening (61) on the wall (6) below the transverse ring beam (2) and is fixedly connected to the longitudinal horizontal bar (3) of the external scaffold.

5. The non-embedded wall connecting device for existing building outer wall scaffoldings according to claim 1 or 4, characterized in that: The connecting steel pipe (5) is provided with an external thread (52) at one end. The connecting steel pipe with the external thread passes through the opening (61) on the wall (6) below the transverse ring beam (2) and the mounting hole (431) on the angle steel (43) in the horizontal direction from the outside, and is then fixed to the angle steel (43) with two fixing nuts (51).

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