Steel pipe scaffold cross bridging diagonal rod cross connecting piece device and construction method thereof

Abstract

The invention relates to a steel pipe scaffold cross bridging diagonal rod cross connecting piece device and a construction method thereof, the steel pipe scaffold cross bridging diagonal rod cross connecting piece device comprises an inner connecting steel pipe device, an outer connecting steel pipe device, a connecting high-strength bolt and a high-strength bolt sleeve, and the inner connecting steel pipe device is connected with the outer connecting steel pipe device into a whole through the connecting high-strength bolt and the high-strength bolt sleeve; the inner connecting steel pipe devices and the outer connecting steel pipe devices are connected with the diagonal bridging diagonal rods through butt joint fasteners. All the parts can be machined in batches in a machining plant, the cost is low, the parts can be repeatedly used, the position of the outer connecting steel pipe can be controlled when the double-rectangular surrounding structure passes through the outer connecting double-rectangular surrounding hole of the outer connecting steel pipe, and the double-rectangular surrounding structure and the inner connecting steel pipe can rotate on the same plane at the connecting core column; and after freely rotating at the double-rectangular surrounding structure, the double-rectangular surrounding structure can be aligned with the inner connecting steel pipe, so that the occupied space of a single component is reduced, and the loading, unloading, transportation and use are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering scaffolding, and in particular to a steel pipe scaffolding scissors brace diagonal rod cross-connecting piece device and a construction method thereof. Background Art

[0002] At present, the installation of steel pipe scaffolding in construction projects usually involves the setting of scissor braces. The extension of the diagonal rods of the scissor braces should be overlapped or butt-jointed. When the scissor brace diagonal rods are extended by overlap, the overlap length should not be less than 1m, and should be fixed with no less than 2 rotating fasteners.

[0003] Steel pipe scaffolding is generally divided into two types: scaffolding and support frame. Steel pipe scaffolding scissors support is divided into horizontal and vertical types.

[0004] If a steel pipe scaffold is equipped with scissor braces, the extension of the diagonal rods of the scissor braces is generally done by overlapping. When overlapping, the two steel pipes need to be connected with a rotating fastener. The inclination angle between the diagonal rods of the scissor braces and the ground should be between 45° and 60°. When overlapping or butt-jointing is used to extend the diagonal rods of the scissor braces, the steel pipes at the intersection must overlap and pass through, resulting in the two ends of one of the diagonal rods and the intersection being not in the same plane, so that the steel pipes that are not in the same plane cannot be connected to other steel pipes near the intersection.

[0005] In view of the above situation, the current construction projects have increasingly strict requirements on the quality of scaffolding erection, and the scissors brace is an important organizational part of the scaffolding, and the installation quality of the scissors brace plays a great role in improving the stability and bearing capacity of the frame. In order to ensure that the steel tube scaffolding scissors brace can be connected to the main node at every point during the installation and construction process, it is necessary to solve the problem of overlapping intersections of the scissors brace. New measures are needed to solve the problem of overlapping intersections of the steel tube scaffolding scissors brace. Summary of the invention

[0006] The purpose of the present invention is to provide a steel pipe scaffolding scissors brace diagonal rod cross-connector device and a construction method thereof, so as to solve the problem that after the diagonal rods of the existing scaffolding scissors brace overlap at the intersection, the diagonal rods on the outside of the intersection cannot be connected to the main node of the scaffolding near the intersection due to the overlap with the diagonal rods on the inside, and if the other positions of the scissors brace diagonal rods are connected to the main node of the scaffolding, the diagonal rods must be bent inwards with the help of manpower in order to contact and connect with the main node of the scaffolding, so that the deformation of the scissors brace diagonal rods affects the overall force and installation quality of the scaffolding.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A cross-connector device for a steel pipe scaffolding scissors brace diagonal rod comprises an inner connecting steel pipe device, an outer connecting steel pipe device, connecting high-strength bolts and high-strength bolt sleeves. The inner connecting steel pipe device is connected to the outer connecting steel pipe device as a whole through connecting high-strength bolts and high-strength bolt sleeves. The inner connecting steel pipe device and the outer connecting steel pipe device are both connected to the scissors brace diagonal rods through butt fasteners. The inner connecting steel pipe device, the outer connecting steel pipe device, the connecting high-strength bolts and the high-strength bolt sleeves can all be finalized and processed and produced by a factory.

[0009] The inner connecting steel pipe device includes an inner connecting steel pipe, an inner connecting steel plate and a steel pipe scaffolding scissors brace diagonal rod cross-connector device, including an inner connecting steel pipe device, an outer connecting steel pipe device, connecting high-strength bolts and high-strength bolt sleeves. The inner connecting steel pipe device is connected to the outer connecting steel pipe device as a whole by connecting high-strength bolts and high-strength bolt sleeves. The inner connecting steel pipe device and the outer connecting steel pipe device are connected to the scissors brace diagonal rods through docking fasteners. The inner connecting steel pipe device, the outer connecting steel pipe device, the connecting high-strength bolts and high-strength bolt sleeves can all be finalized and processed by the factory. The inner rotation angle limiter, an inner connecting steel pipe is connected to each of the two ends of the inner connecting steel plate. The inner connecting steel pipe is circular. The center of the inner connecting steel plate is provided with an inner connecting hole. The inner rotation angle limiter is composed of two inner right-angle limiters and two inner bevel limiters. The four inner rotation angle limiters are respectively welded to the four corners around the inner connecting hole on the inner connecting steel plate.

[0010] The maximum angle of rotation of the inner right angle limiter to the inner oblique angle limiter is 15°.

[0011] The external connecting steel pipe device includes an external connecting steel pipe, an external connecting steel plate and an external rotation angle limiter. The two ends of the external connecting steel plate are each connected to an external connecting steel pipe. The external connecting steel pipe is circular. An external connecting double-rectangular circular hole is opened in the center of the external connecting steel plate. The center of the external connecting double-rectangular circular hole is circular, and there are two protruding circular rectangular ears on the outside of the circle. The external rotation angle limiter is composed of two external right-angle limiters and two external bevel angle limiters. The four external rotation angle limiters are respectively welded to the four corners around the external connecting double-rectangular circular hole on the external connecting steel plate.

[0012] The maximum angle of rotation of the outer right-angle limiter to the outer bevel angle limiter is 15°.

[0013] The connecting high-strength bolt comprises a round head chord arch cap, a connecting core column and a double-square circular plate. The connecting core column is connected to the double-square circular plate, the other end of the connecting core column is connected to the round head chord arch cap, the other end of the double-square circular plate is connected to the round head chord arch cap, the round head chord arch cap is the chord arch body, and the round head chord arch cap can prevent the internal connecting steel pipe device and the external connecting steel pipe device from falling off.

[0014] The connecting core column is a solid cylinder, the double-rectangular circular plate is a rectangular plate, the externally connected double-rectangular circular hole and the double-rectangular circular plate form a double-rectangular circular structure, and the externally connected double-rectangular circular hole of the externally connected steel pipe device passes through the double-rectangular circular plate in the connecting high-strength bolt to reach the connecting core column and can be rotated, with a rotation angle of 15°.

[0015] The high-strength bolt sleeve is a hollow cylindrical sleeve. The diameter of the central cylindrical hole of the high-strength bolt sleeve is the same as the diameter of the connecting core column. The inner connecting steel plate and the outer connecting steel plate are separated by the high-strength bolt sleeve to meet the outer diameter clearance requirements and relative stability of the inner connecting steel pipe and the outer connecting steel pipe, ensuring the use needs and requirements of the inner connecting steel pipe and the outer connecting steel pipe in the same plane.

[0016] A construction method using a steel pipe scaffolding scissors brace diagonal rod cross connector device, the steps of which are:

[0017] S1. First check the scaffolding special construction plan and go to the construction site to check. According to the scaffolding special construction plan for the arrangement of the scissors brace, and based on the span and step spacing of the scaffolding, and the standard connection point requirement that the distance from the center line of the rotating fastener to the main node should not be greater than 150mm, determine the connection point position, starting point position, and angle of the diagonal bars in the two directions of the scissors brace;

[0018] S2. According to the special construction plan and the frame of the construction site, the positions of the diagonal bars in two directions of the scissors brace are determined, and the wires in two directions are used to determine the installation position of the cross-connection device of the diagonal bars of the scissors brace, that is, the intersection position and the connection position with the main node; when the diagonal bars in one direction of the scissors brace are installed, they are connected to the main node one by one from the bottom to the top, and the diagonal bars themselves are butt-jointed or overlapped to connect the steel pipes of the cross-connection device of the scissors brace diagonal bars. The top of the steel pipe of the scissors brace diagonal bar is at the lower end of the inner connecting steel pipe and is close to the inner connecting steel pipe; after the installation and fixation of the diagonal bars of the scissors brace at the lower part of the inner connecting steel pipe is completed, the inner connecting steel pipe device rotates the inner connecting steel pipe to connect the lower end of the diagonal bars of the scissors brace with the inner connecting steel pipe through the butt fastener to complete the connection;

[0019] S3, the outer connecting steel pipe passes through the outer connecting double-rectangular circular hole, passes through the double-rectangular circular plate, reaches the connecting core column, and then rotates to ensure that the inner connecting steel pipe and the outer connecting steel pipe are in the same plane;

[0020] S4. After the installation of the diagonal rod of one direction of the scissors brace is completed, when installing the diagonal rod of the other direction of the scissors brace, there are two installation methods: from the bottom of the frame upward and from the lower end of the external connection steel pipe of the external connection steel pipe device downward: when installing the diagonal rod of the scissors brace from the bottom of the frame upward, when installing the last diagonal rod of the scissors brace at the bottom of the external connection steel pipe, rotate the external connection steel pipe to align its lower end with the upper end of the diagonal rod of the scissors brace, and then connect it with the butt fastener. Then, the lower end of the diagonal rod of the scissors brace and the upper end of the diagonal rod of the secondary scissors brace are overlapped to extend the length. The overlap length shall not be less than m; When installing from the lower end of the external connection steel pipe of the external connection steel pipe device, first connect the upper end of the scissors brace diagonal rod adjacent to the lower end of the external connection steel pipe device through the butt fastener and rotate the external connection steel pipe so that its lower end is aligned with the scissors brace diagonal rod, and then pay attention to the inclination angle between the scissors brace diagonal rod and the ground when rotating the external connection steel pipe, and then install the scissors brace diagonal rods downward in sequence by butt connection or overlap connection, install the lowest scissors brace diagonal rod, select the appropriate steel pipe length, and use the rotating fastener to complete the installation and connection with the steel pipe at the lower part of the scissors brace diagonal rod;

[0021] S5. After the installation of the scissors brace diagonal bars in the two lower directions of the inner connecting steel pipe device and the outer connecting steel pipe device is completed, the scissors brace diagonal bars in the two upper directions of the inner connecting steel pipe device and the outer connecting steel pipe device can be installed one by one or at the same time. During the installation, the upper end of the inner connecting steel pipe of the inner connecting steel pipe device and the upper end of the outer connecting steel pipe of the outer connecting steel pipe device are butt-jointed with butt fasteners to lengthen the scissors brace diagonal bars connecting the upper ends of the inner connecting steel pipe and the outer connecting steel pipe.

[0022] The beneficial effects of the present invention are as follows: the equipment involved in the present invention has a simple structure, can be adjusted into a plane in two directions, reduces transportation space, is light in weight, has high strength, is easy to use, can be rotated, can be used in a turnover manner, can adjust the angle during installation, has a wide range of applications, and improves the installation quality of the scissor brace diagonal rod; the use of a double-rectangular circle structure can make the position of the external connecting steel pipe relatively fixed to prevent outward slippage; the connecting steel plates each have a set of four angle limiters that can be rotated 15°; the use of a round-headed chord arch cap can prevent falling off; the internal and external connecting steel pipe devices can be adjusted to the same plane during use and transportation. Finally, the internal connecting steel pipe device, the external connecting steel pipe device, the connecting high-strength bolts, the high-strength bolt sleeves, etc. of the present invention can all be pre-processed in batches in a processing plant, with high processing accuracy, and the quality of the finished product can be easily guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the invention;

[0024] Figure 2 It is a structural schematic diagram of the internal connecting steel pipe device of the invention;

[0025] Figure 3 for Figure 2BB cross-sectional view;

[0026] Figure 4 for Figure 2 CC section view;

[0027] Figure 5 It is a structural schematic diagram of the external connection steel pipe device of the invention;

[0028] Figure 6 for Figure 5 DD cross-sectional view;

[0029] Figure 7 for Figure 5 FF cross-sectional view;

[0030] Figure 8 A schematic diagram of the structure of the invented high-strength bolt connection;

[0031] Fig. 9 for Figure 8 GG cross-sectional view;

[0032] Fig.10 for Figure 8 HH cross-sectional view;

[0033] In the figure: 1-internal connection steel pipe device; 11-internal connection steel pipe; 12-internal connection steel plate; 13-internal connection hole; 14-internal rotation angle limiter; 2-external connection steel pipe device; 21-external connection steel pipe; 22-external connection steel plate; 23-external connection double-square circular hole; 24-external rotation angle limiter; 3-connecting high-strength bolt; 31-round head chord arch cap; 32-connecting core column; 33-double-square circular plate; 4-high-strength bolt sleeve; 5-butt fastener;

[0034] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] In order to better and more safely install the scaffolding scissors brace, ensure the smooth progress of the project production, and solve the problem that the rods at the intersection of the scaffolding scissors brace in the project overlap and the rods can only be in the same plane after deformation, the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0036] like Figure 1-Figure 10As shown, a steel pipe scaffolding scissors brace diagonal rod cross-connector device includes an inner connecting steel pipe device 1, an outer connecting steel pipe device 2, connecting high-strength bolts 3 and high-strength bolt sleeves 4. The inner connecting steel pipe device 1 is connected to the outer connecting steel pipe device 2 as a whole by connecting the high-strength bolts 3 and the high-strength bolt sleeves 4. The inner connecting steel pipe device 1 and the outer connecting steel pipe device 2 are both connected to the scissors brace diagonal rods through docking fasteners 5. The inner connecting steel pipe device 1, the outer connecting steel pipe device 2, the connecting high-strength bolts 3 and the high-strength bolt sleeves 4 can all be batch processed in a processing plant, and the quality of the finished product is easily guaranteed. The material is all made of iron, which is fatigue-resistant, strong, not easy to damage and can be used for multiple turnovers.

[0037] The inner connecting steel pipe device 1 includes an inner connecting steel pipe 11, an inner connecting steel plate 12 and an inner rotation angle limiter 14. The two ends of the inner connecting steel plate 12 are connected to an inner connecting steel pipe 11 respectively. The inner connecting steel pipe 11 is circular with an outer diameter of 48.3 mm, a wall thickness of 3.6 mm and a length of 102 mm. An inner connecting hole 13 is provided at the center of the inner connecting steel plate 12. The inner connecting steel plate 12 is a rectangular steel plate with a thickness of 10 mm. The diameter of the inner connecting hole 13 is 20 mm. The inner rotation angle limiter 14 is composed of two inner right angle limiters and two inner bevel limiters. The four inner rotation angle limiters 14 are respectively welded to the four corners around the inner connecting hole 13 on the inner connecting steel plate 12. The maximum angle of rotation of the inner right angle limiter to the inner bevel limiter is 15°, which meets the range requirement of 45° to 60° specified in the specification.

[0038] The external connecting steel pipe device 2 includes an external connecting steel pipe 21, an external connecting steel plate 22 and an external rotation angle limiter 24. The two ends of the external connecting steel plate 22 are each connected to an external connecting steel pipe 21. The external connecting steel pipe 21 is circular, with an outer diameter of 48.5mm, a wall thickness of 3.6mm, and a length of 102mm. An external connecting double-rectangular circular hole 23 is opened in the center of the external connecting steel plate 22. The external connecting steel plate 22 is a rectangular steel plate with a thickness of 10mm. The center of the external connecting double-rectangular circular hole 23 is circular, and there are two protruding circular rectangular ears on the outside of the circle. The center circle diameter of the external connecting double-rectangular circular hole 23 is 20mm, the rectangular ear width is 5mm, and the rectangular ear protruding circle height is 3mm. The external rotation angle limiter 24 is composed of two external right-angle limiters and two external bevel limiters. The four external rotation angle limiters 24 are respectively welded to the four corners around the external connecting double-rectangular circular hole 23 on the external connecting steel plate 22. The maximum angle of rotation of the outer right-angle limiter to the outer bevel angle limiter is 15°.

[0039] The connecting high-strength bolt 3 includes a round-headed chord arch cap 31, a connecting core column 32 and a double-rectangular circular plate 33. The connecting core column 32 is connected to the double-rectangular circular plate 33. The other end of the connecting core column 32 is connected to the round-headed chord arch cap 31. The other end of the double-rectangular circular plate 33 is connected to the round-headed chord arch cap 31. The round-headed chord arch cap 31 is a chord arch body with a bottom circle of 28 mm and a height of 6 mm.

[0040] The connecting core column 32 is a solid cylinder with a diameter of 20 mm and a length of 53 mm. The double-rectangular circular plate 33 is a rectangular plate with a thickness of 5 mm, a width of 23 mm and a length of 53 mm. The externally connected double-rectangular circular hole 23 and the double-rectangular circular plate 33 form a double-rectangular circular structure. The external connecting double-rectangular circular hole 23 in the external connecting steel pipe device 1 passes through the double-rectangular circular plate 33 in the connecting high-strength bolt 3 to reach the connecting core column 32 and can rotate freely within a rotation range of 15°, and the double-rectangular circular structure can prevent the external connecting steel pipe 21 from moving outward. The double-rectangular circular structure can control the position of the external connecting steel pipe 21 through the external connecting double-rectangular circular hole 23 of the external connecting steel pipe device 2. When the external connecting steel plate 22 is on the connecting core column 32, the external connecting steel pipe 21 can rotate in the same plane as the internal connecting steel pipe 11. When the external connecting steel plate 22 is on the double-rectangular circular plate 33, the external connecting steel pipe 21 can rotate freely and align with the internal connecting steel pipe 11, thereby reducing the space occupied by a single component and facilitating disassembly, assembly, transportation and use.

[0041] The high-strength bolt sleeve 4 is a hollow cylindrical sleeve, and the aperture of the central cylindrical hole of the high-strength bolt sleeve 4 is the same as the diameter of the connecting core column 32. The high-strength bolt sleeve 4 can fix the net distance between the inner connecting steel plate 12 and the outer connecting steel plate 22, so that the inner connecting steel pipe 11 and the outer connecting steel pipe 21 can rotate freely in the same plane.

[0042] The construction method using the steel scaffolding scissors brace diagonal rod cross-connector device comprises the following steps:

[0043] S1. First check the scaffolding special construction plan and go to the construction site to check. According to the scaffolding special construction plan, the layout requirements of the scissors brace, the span and pitch of the scaffolding, and the distance from the center line of the rotating fastener to the main node pole should not be greater than 150mm. Determine the connection point position, starting point position, and angle of the diagonal rods in both directions of the scissors brace to be between 45° and 60° with the ground;

[0044] S2, such as Figure 1As shown in , the positions of the diagonal bars in two directions of the scissors brace are determined according to the special construction plan and the frame at the construction site, and the wires in two directions are used to determine the position of the cross-connector installation of the diagonal bars of the scissors brace, that is, the intersection position and the connection position with the main node. When installing the diagonal bars in one direction of the scissors brace, they are connected to the main node one by one from the bottom to the top, and the diagonal bars themselves are butt-jointed or overlapped to extend the steel pipes connected to the cross-connector installation of the diagonal bars of the scissors brace. Note that the top of the steel pipe of the diagonal bar of the scissors brace must be at the lower end of the inner connecting steel pipe 11 and close to the inner connecting steel pipe 11. After the installation and fixation of the diagonal bars of the scissors brace at the bottom of the inner connecting steel pipe 11 is completed, the inner connecting steel pipe device 1 rotates the inner connecting steel pipe 11 to connect its lower end to the diagonal bar steel pipe of the scissors brace through the butt fastener 5, and the butt connection of the diagonal bar steel pipe of the scissors brace and the inner connecting steel pipe 11 is completed.

[0045] S3, in Figure 8 , 9 In the embodiment shown in FIG. 10 , the outer connecting steel pipe 21 passes through the outer connecting double-rectangular circular hole 23, passes through the double-rectangular circular plate 33, reaches the connecting core column 32, and then rotates to ensure that the inner connecting steel pipe 11 and the outer connecting steel pipe 21 are in the same plane;

[0046] S4. Figure 1 In the illustrated implementation example, after the installation of the diagonal rods in one direction of the scissors brace is completed, the installation of the diagonal rods in the other direction of the scissors brace can be carried out from the bottom of the frame upwards or from the lower end of the external connection steel pipe 21 of the external connection steel pipe device 2. When the diagonal rods of the scissors brace are installed from the bottom of the frame upwards, when the last diagonal rod of the scissors brace at the lower part of the external connection steel pipe 21 is installed, the lower end of the external connection steel pipe 21 is rotated to align its lower end with the upper end of the diagonal rod of the scissors brace and connected through the butt fastener 5, and then the lower end of the diagonal rod of the scissors brace and the upper end of the diagonal rod of the secondary scissors brace are overlapped to extend the length, and the overlap length shall not be less than 1m. When installing from the lower end of the external connecting steel pipe 21 of the external connecting steel pipe device 2, first connect the upper end of the scissors-bracing diagonal rod adjacent to the lower end of the external connecting steel pipe 21 of the external connecting steel pipe device 2 through the docking fastener 5 and rotate the external connecting steel pipe 21 so that its lower end is aligned with the scissors-bracing diagonal rod, and then connect. When rotating the external connecting steel pipe 21 to connect, pay attention to the inclination angle of the scissors-bracing diagonal rod and the ground. Then, use a docking method or a lap connection method to install the scissors-bracing diagonal rods downward in turn. Install the lowest scissors-bracing diagonal rod, select a suitable steel pipe length, and use a rotating fastener to complete the installation and connection with the steel pipe at the bottom of the scissors-bracing diagonal rod.

[0047] S5. Figure 1In the illustrated implementation example, after the installation of the scissor brace diagonal bars in the two lower directions of the inner connecting steel pipe device 1 and the outer connecting steel pipe device 2 is completed, the scissor brace diagonal bars in the two upper directions of the inner connecting steel pipe device 1 and the outer connecting steel pipe device 2 can be installed one by one or simultaneously. During installation, the upper end of the inner connecting steel pipe 11 in the inner connecting steel pipe device 1 and the upper end of the outer connecting steel pipe 21 in the outer connecting steel pipe device 2 are butt-jointed with the butt fastener 5 to lengthen the scissor brace diagonal bars connected to the upper ends of the inner connecting steel pipe 11 and the outer connecting steel pipe 21.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A cross-connector device for a steel pipe scaffolding scissor brace diagonal rod, characterized in that: The invention comprises an inner connecting steel pipe device (1), an outer connecting steel pipe device (2), connecting high-strength bolts (3) and high-strength bolt sleeves (4); the inner connecting steel pipe device (1) is connected to the outer connecting steel pipe device (2) into a whole through the connecting high-strength bolts (3) and the high-strength bolt sleeves (4); and the inner connecting steel pipe device (1) and the outer connecting steel pipe device (2) are both connected to the scissor support diagonal rod through a butt fastener (5).

2. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 1, characterized in that: The inner connecting steel pipe device (1) comprises an inner connecting steel pipe (11), an inner connecting steel plate (12) and an inner rotating angle limiter (14), wherein the two ends of the inner connecting steel plate (12) are respectively connected to an inner connecting steel pipe (11), an inner connecting hole (13) is provided at the center of the inner connecting steel plate (12), and the inner rotating angle limiter (14) is composed of two inner right angle limiters and two inner oblique angle limiters, and the four inner rotating angle limiters (14) are respectively welded to the four corner positions around the inner connecting hole (13) on the inner connecting steel plate (12).

3. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 2, characterized in that: The maximum angle of rotation of the inner right angle limiter to the inner oblique angle limiter is 15°.

4. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 3, characterized in that: The external connection steel pipe device (2) comprises an external connection steel pipe (21), an external connection steel plate (22) and an external rotation angle limiter (24), wherein the two ends of the external connection steel plate (22) are respectively connected to an external connection steel pipe (21), and the center of the external connection steel plate (22) is provided with an external connection double-rectangular circular hole (23), the center of the external connection double-rectangular circular hole (23) is circular, and two protruding circular rectangular ears are arranged on the outer side of the circle, and the external rotation angle limiter (24) is composed of two external right-angle limiters and two external oblique angle limiters, and the four external rotation angle limiters (24) are respectively welded to the four corner positions around the external connection double-rectangular circular hole (23) on the external connection steel plate (22).

5. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 4, characterized in that: The maximum angle of rotation of the outer right-angle limiter to the outer bevel angle limiter is 15°.

6. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 5, characterized in that: The connecting high-strength bolt (3) comprises a round-headed chord cap (31), a connecting core column (32) and a double-rectangular circular plate (33); the connecting core column (32) is connected to the double-rectangular circular plate (33); the other end of the connecting core column (32) is connected to the round-headed chord cap (31); and the other end of the double-rectangular circular plate (33) is connected to the round-headed chord cap (31).

7. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 6, characterized in that: The connecting core column (32) is a solid cylinder, the double-rectangular circular plate (33) is a rectangular plate, and the double-rectangular circular hole (23) and the double-rectangular circular plate (33) are externally connected to form a double-rectangular circular structure.

8. A steel pipe scaffolding scissors brace diagonal rod cross connector device according to claim 7, characterized in that: The high-strength bolt sleeve (4) is a hollow cylindrical sleeve, and the diameter of the central cylindrical hole of the high-strength bolt sleeve (4) is the same as the diameter of the connecting core column (32).

9. A construction method using the steel pipe scaffolding scissors brace diagonal rod cross connector device according to any one of claims 4 to 8, characterized in that: The steps are: S1. First check the scaffolding special construction plan and go to the construction site to check. According to the scaffolding special construction plan for the arrangement of the scissors brace, and based on the span and step spacing of the scaffolding, and the standard connection point requirement that the distance from the center line of the rotating fastener to the main node should not be greater than 150mm, determine the connection point position, starting point position, and angle of the diagonal bars in the two directions of the scissors brace; S2. According to the special construction plan and the frame at the construction site, the positions of the diagonal bars in two directions of the scissors brace are determined, and the positions of the cross-connection devices of the diagonal bars of the scissors brace, i.e., the intersection position and the connection position with the main node, are determined by pulling wires in two directions. When the diagonal bars in one direction of the scissors brace are installed, they are connected to the main node one by one from the bottom to the top, and the diagonal bars themselves are butt-jointed or overlapped to be extended. When the steel pipe of the diagonal bar cross-connection device of the scissors brace is connected, the top of the steel pipe of the diagonal bar of the scissors brace is at the lower end of the inner connecting steel pipe (11) and is close to the inner connecting steel pipe (11). After the installation and fixation of the diagonal bars of the scissors brace at the lower part of the inner connecting steel pipe (11) is completed, the inner connecting steel pipe device (1) rotates the inner connecting steel pipe (11) to connect the lower end of the diagonal bar of the scissors brace with the inner connecting steel pipe (11) through the butt fastener (5) to complete the connection. S3, the outer connecting steel pipe (21) passes through the outer connecting double-rectangular circular hole (23), passes through the double-rectangular circular plate (33), reaches the connecting core column (32), and then rotates to ensure that the inner connecting steel pipe (11) and the outer connecting steel pipe (21) are in the same plane; S4. After the installation of the diagonal rods in one direction of the scissors brace is completed, when installing the diagonal rods in the other direction of the scissors brace, there are two installation methods: from the bottom of the frame upward and from the lower end of the external connecting steel pipe (21) of the external connecting steel pipe device (2) downward. When the diagonal rods of the scissors brace are installed from the bottom of the frame upward, when the last diagonal rod of the scissors brace at the lower part of the external connecting steel pipe (21) is installed, the lower end of the external connecting steel pipe (21) is rotated to align its lower end with the upper end of the diagonal rod of the scissors brace and connected through the butt fastener (5). Then, the lower end of the diagonal rod of the scissors brace and the upper end of the diagonal rod of the secondary scissors brace are overlapped to extend the length. The overlap length shall not be less than 1m. When installing the lower end of the external connection steel pipe (21) of the external connection steel pipe device (2), first connect the upper end of the scissors brace diagonal rod adjacent to the lower end of the external connection steel pipe (21) of the external connection steel pipe device (1) through the butt fastener (5) and rotate the external connection steel pipe (21) so that its lower end is aligned with the scissors brace diagonal rod and then connect. When rotating the external connection steel pipe (21) to connect, pay attention to the inclination angle between the scissors brace diagonal rod and the ground. Then, the scissors brace diagonal rods are installed downward in sequence by butt connection or overlap connection. The lowest scissors brace diagonal rod is installed, and the appropriate steel pipe length is selected. The installation and connection with the steel pipe at the bottom of the scissors brace diagonal rod is completed by using a rotating fastener; S5. After the installation of the scissor brace diagonal bars in the two lower directions of the inner connecting steel pipe device (1) and the outer connecting steel pipe device (2) is completed, the scissor brace diagonal bars in the two upper directions of the inner connecting steel pipe device (1) and the outer connecting steel pipe device (2) can be installed one by one or simultaneously. During the installation, the upper end of the inner connecting steel pipe (11) of the inner connecting steel pipe device (1) and the upper end of the outer connecting steel pipe (21) of the outer connecting steel pipe device (2) are butt-jointed with butt fasteners (5) to lengthen the scissor brace diagonal bars connecting the inner connecting steel pipe (11) and the upper end of the outer connecting steel pipe (21).

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