A scissors support device based on a support steel pipe column for bridge construction

Abstract

The application relates to a scissors support device based on a support steel pipe column for bridge construction and relates to the technical field of bridge construction scissors supports, which comprises a support steel pipe column, an annular clamping base, a cross bogie and an adapter pipe, the back surface of the annular clamping base is provided with a clamping plate, the annular clamping base is fixed with the support steel pipe column through the clamping plate, the bottom of the cross bogie is inserted into the annular clamping base, the adapter pipe is arranged at four opposite corners of the cross bogie, a scissors support steel pipe is arranged at the end of the adapter pipe away from the cross bogie, and a universal joint connector is arranged at the end of the scissors support steel pipe away from the adapter pipe. The application can flexibly adjust the intersection angle of the connecting seat and the angle of the rod, realizes efficient assembly through a quick clamping structure, guarantees support stability through a multiple locking and limiting structure of the adapter scaffold rod, and facilitates maintenance and expansion through modular design, so that the installation efficiency and support safety are improved as a whole.

Description

Technical Field

[0001] This invention relates to the technical field of scissor bracing in bridge construction, and in particular to a scissor bracing device based on supporting steel pipe columns for bridge construction. Background Technology

[0002] In bridge construction, supporting steel pipe columns, as core components of temporary support systems, are widely used in scenarios such as high pier casting, cantilever construction, and scaffolding erection. Their structural stability is directly related to construction safety and project quality. To prevent supporting steel pipe columns from tilting or becoming unstable under vertical loads and lateral impacts, scissor bracing devices are usually installed to form a spatial constraint system. By distributing the load through diagonal support, the overall lateral stiffness is improved.

[0003] In existing technologies, the connection and adjustment method between scissor bracing and supporting steel pipe columns is crucial to the support effect. Typically, couplers are used to connect the steel pipes to form horizontal scissor bracing, using a fixed-angle cross structure to enhance load-bearing capacity. While this approach can enhance horizontal stability to some extent, it has significant limitations: First, the coupler connection is only compatible with steel pipes of a fixed diameter, failing to meet the needs of supporting steel pipe columns of different specifications commonly encountered in bridge construction. If the steel pipe diameter is changed, new couplers must be customized, resulting in poor versatility. Second, the fixed angle and length of the horizontal scissor bracing limit its placement to the pre-defined "first and third row node horizontal planes," making it difficult to adapt to changes in the spatial position of the supporting steel pipe columns due to construction phases, thus lacking adjustment flexibility. Third, the couplers are fixed by bolt tightening, which is prone to loosening under vibration loads, and disassembly requires tightening each bolt individually, leading to low efficiency and increased time and cost for high-altitude operations.

[0004] The solution involves extending and adjusting the angle of the vertical scissor bracing using cross-connectors, sliding rods, and fixing devices. While this solution addresses the issue of extending the vertical support, it still has several technical limitations: First, the connecting device is only suitable for linear connections between members and lacks an adaptation mechanism for the ring structure supporting the steel pipe column. If directly applied to steel pipe column connections, the small contact area can easily lead to localized stress concentration, causing damage to the steel pipe column surface. Second, the adjustment relies on a threaded structure, requiring repeated turning of the screws for length and angle adjustments, which is cumbersome. Furthermore, the threads are susceptible to rust from concrete slurry and rainwater, affecting adjustment accuracy and service life. Third, the solution lacks a coordinated design between horizontal and vertical scissor bracing. Vertical support alone cannot form a spatial constraint system, making it difficult to resist the complex three-dimensional loads during bridge construction.

[0005] Furthermore, existing technologies generally suffer from a contradiction between connection reliability and construction efficiency: some solutions employ rigid extrusion structures to achieve stable connections, but this can easily lead to surface dents in the steel pipe columns; other solutions use simple plug-in structures to improve adjustability, but these are prone to slippage under load. Meanwhile, for the frequent high-altitude operations in bridge construction, existing scissor bracing devices often require auxiliary tools for installation, increasing the risk of tool falls and operational complexity.

[0006] In summary, the existing scissor bracing devices have shortcomings in terms of adaptability to multiple steel pipe specifications, three-dimensional angle adjustment, spatial collaborative support, and rapid assembly and disassembly, making it difficult to meet the modern bridge construction requirements for efficient, safe, and universal support. There is an urgent need for a scissor bracing device that can take into account adaptability, adjustability, and stability. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. The purpose of the present invention is to provide a scissor bracing device based on supporting steel pipe columns for bridge construction, which is used to solve the problems mentioned in the background art.

[0008] To address the aforementioned problems, this invention provides a scissor bracing device based on a supporting steel pipe column for bridge construction, comprising a supporting steel pipe column, an annular clamping base, a cross bogie, and an adapter tube. A clamping plate is provided on the back of the annular clamping base, and the annular clamping base is fixed to the supporting steel pipe column via the clamping plate. The bottom of the cross bogie is inserted into the annular clamping base. The adapter tube is located at the four opposite corners of the cross bogie. A scissor bracing steel pipe is provided at the end of the adapter tube away from the cross bogie, and a universal joint connector is provided at the end of the scissor bracing steel pipe away from the adapter tube. The two ends of the universal joint connector are respectively bound to the scissor bracing steel pipe and the supporting steel pipe column.

[0009] The scissor bracing device based on steel pipe columns for bridge construction provided by this invention also has the following technical features: Furthermore, the universal joint connector consists of a ball joint fixed to the end of the scissor brace steel pipe and a ball socket fixed to the supporting steel pipe column. The ball joint can rotate three-dimensionally within the ball socket through the universal joint. The outer walls of the ball joint and the ball socket are provided with a snap-fit ​​assembly, which is used by the ball socket to fix the ball joint and the ball socket to complete the closed fixation.

[0010] Furthermore, the cross bogie is connected to the scissor brace steel pipe via an adapter tube. The end of the scissor brace steel pipe is slidably inserted into the adapter tube, and the end of the adapter tube is slidably inserted into the cross bogie. Both are fixed relative to each other by locking devices.

[0011] Furthermore, the locking element includes an L-shaped locking rod and at least one locking seat. A corresponding insertion hole for the locking rod to pass through is provided at the connection point where the cross-shaped bogie, adapter tube, and scissor brace steel tube interlock. The locking seat is fixedly disposed below the insertion hole and has an internal receiving groove. The front end of the locking rod is engaged within the receiving groove of the locking seat.

[0012] Furthermore, there are several supporting steel pipe columns, and one of the several supporting steel pipe columns is close to the annular clamping base. A positioning hole is opened at the middle end of the column. Fixing holes are opened at both ends of the clamping plate near the positioning frame. A positioning pin is inserted inside the fixing hole. The positioning pin passes through the fixing hole and the positioning hole and extends to the outside of the fixing hole. A fixing cap is threaded to the tail end of the positioning pin.

[0013] Furthermore, the outer wall of the adapter tube is provided with length graduations along the length direction, the insertion end of the scissor bracing steel pipe is provided with a limiting protrusion, and the inner wall of the adapter tube is provided with a corresponding limiting groove. The limiting protrusion slides along the limiting groove and can limit the maximum insertion depth of the scissor bracing steel pipe.

[0014] Furthermore, the supporting steel pipe column includes an upright, a longitudinal horizontal bar, a transverse horizontal bar, a malleable cast iron swivel coupler, and a cross coupler. The longitudinal horizontal bar and the transverse horizontal bar are respectively connected to different height positions of the upright through the cross coupler.

[0015] Furthermore, the annular clamping base and the clamping plate are movably connected by a hinge plate.

[0016] The present invention has the following beneficial effects: the hinge plate of the annular clamping base can flexibly adjust the opening and closing angle of the clamping plate, and with the elastic pad and buffer spring, it can adapt to support steel pipe columns of different diameters, solving the limitation of single specification adaptation; the cross bogie can rotate and adjust the horizontal angle, adapt to the sliding fit between the pipe and the scissor brace steel pipe and the three-dimensional deflection of the universal joint connector, realize the multi-angle cross arrangement of horizontal and vertical scissor braces, and meet the spatial support requirements of complex scenarios such as high bridge piers and cantilever construction.

[0017] The L-shaped locking rod and locking seat can be plugged into each other to quickly lock the length adjustment of the adapter tube and the scissor brace steel pipe, and the fixation can be completed without tools. The snap-fit ​​assembly of the universal joint connector can quickly lock the support angle, and the positioning pin and fixing cap of the ring clamping base can achieve double quick fixation, which greatly reduces the time cost of high-altitude operations.

[0018] The positioning pin passes through the fixing hole and the positioning hole and works with the fixing cap to achieve axial locking of the annular clamping base and the steel pipe column; the interference fit between the L-shaped locking rod and the insertion hole resists vibration loads and prevents loosening after adjustment; the snap-fit ​​assembly of the universal joint connector clamps the ball head and the ball socket to ensure reliable angle locking; the limiting protrusion and limiting groove of the adapter tube limit the maximum insertion depth to prevent excessive stretching failure. Multiple structures work together to ensure the stability of the support system under construction loads.

[0019] Each component adopts a modular design, and the cross bogie, adapter tube, universal joint, etc. can be disassembled and replaced independently. If a single component is damaged, the whole system does not need to be replaced, reducing maintenance costs by more than 60%. The length scale on the outer wall of the adapter tube can be precisely adjusted, improving construction accuracy and safety. Attached Figure Description

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Figure 1 This is a schematic cross-sectional view of the supporting steel pipe column in this invention; Figure 2 This is a schematic diagram of the cross-shaped bogie in this invention; Figure 3 This is a schematic diagram of the universal joint connector in this invention; Figure 4 This is a schematic diagram of the adapter tube structure in this invention; Figure 5 This is a schematic cross-sectional view of the top of the annular clamping base in this invention. Figure 6 This is a schematic diagram of the positioning pin in this invention.

[0022] Explanation of reference numerals in the attached drawings: 1-Supporting steel pipe column, 101-Positioning hole, 2-Annular clamping base, 201-Hinge plate, 2110-Fixing hole, 3-Cross bogie, 4-Adaptor pipe, 5-Scissor bracing steel pipe, 6-Universal joint connector, 61-Ball head, 610-Universal joint, 621-Snap-fit ​​assembly, 7-Positioning pin, 71-Fixing cap, 81-Locking rod, 810-Insertion hole, 82-Locking seat. Detailed Implementation

[0023] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0024] like Figures 1 to 3 In one embodiment of the scissor bracing device based on supporting steel pipe columns for bridge construction of the present invention, the scissor bracing device based on supporting steel pipe columns for bridge construction of this embodiment includes a supporting steel pipe column 1, an annular clamping base 2, a cross bogie 3, an adapter tube 4, a scissor bracing steel pipe 5, a universal joint connector 6, and a locking assembly. The materials and parameters of each component are designed as follows: The supporting steel pipe column 1 includes an upright, a longitudinal horizontal bar, and a transverse horizontal bar, which are assembled by malleable cast iron swivel fasteners and cross fasteners to form a grid-like three-dimensional frame.

[0025] During installation, first open the hinge plate 201 of the annular clamping base 2, so that the clamping plate 211 fits against the outer wall of the supporting steel pipe column 1. Align the fixing hole 2110 of the clamping plate with the positioning hole 101 of the steel pipe column, insert the positioning pin 7, and tighten the fastening cap 71. This forms a double fixing of "mechanical engagement + friction locking", which solves the problem of "single rigid compression and easy slippage" of existing fasteners.

[0026] After the insert column of the cross bogie 3 is inserted into the annular clamping base 2, the bottom of the cross bogie 3 is welded and fixed to the annular clamping base 2. The top of the cross bogie 3 is movable relative to the bottom. After the adapter tube 4 is inserted into the connecting seat of the bogie, it can rotate ±45° around the axis of the connecting seat to realize the spatial cross arrangement of horizontal and vertical scissor braces, so that the scissor braces form an X-shaped spatial grid, which improves the radial constraint strength of the supporting steel pipe column.

[0027] Based on the required span, the position of the sliding scissor brace steel pipe 5 within the adapter pipe 4 is quickly locked by reading the adjustment amount through the length scale. Compared to the existing threaded adjustment method, the adjustment efficiency is improved, and the interference fit between the locking rod 81 and the insertion hole 810 can resist vibration loads.

[0028] The other end of the scissor bracing steel pipe 5 is inserted into the ball socket 62 of another supporting steel pipe column 1 via the ball head component 61. The support angle is adjusted according to the construction drawings. The ball socket is closed and the buckle assembly 621 is fastened. The claws are embedded in the annular groove on the outer wall of the ball head component to achieve angle locking. The thrust bearing of the universal joint 610 can reduce the deflection resistance, making the angle adjustment smoother and solving the problem of "difficult angle adjustment" in existing rigid connections.

[0029] Taking the installation of scissor bracing for 3×3 grid-supported steel pipe columns in the construction of high bridge piers as an example, the specific steps are as follows: Drill positioning holes 101 at the preset height of the supporting steel pipe column 1. Install the annular clamping base 2 on the four corner columns and four side columns of the 3×3 grid, respectively, and lock it with the positioning pin 7 and the fixing cap 71 to ensure that the clamping plate 211 is not loose. Insert the cross bogie 3 into the annular clamping base 2, rotate it to position it according to the design angle, insert the adapter tube 4 and temporarily fix it. Insert the scissor brace steel pipe 5 into the adapter tube 4, adjust the length according to the span, and after confirming it by the scale, insert the L-shaped locking rod 81 to lock it. Connect the ball joint 61 at the other end of the scissor brace steel pipe 5 to the ball socket 62 of the adjacent column, adjust the angle and fasten the buckle assembly 621 to complete the installation of a set of scissor braces. Use a torque wrench to check the torque of the fixing cap 71 and use an angle gauge to verify the support angle.

[0030] In use, this invention constructs a continuous force transmission path of "three-dimensional - two-level - double-locking" within the node: the annular clamping base 2 first forms a first-level rigid anchorage of "mechanical engagement + friction locking" with the supporting steel pipe column 1 through the positioning pin 7; then, the insert column of the cross bogie 3 is locked with the precision sleeve of the base by the limit ring thread, realizing the second-level 360° horizontal steering positioning; after the four adapter tubes 4 are inserted into the bogie connecting seat, they can swing around their own axis ±45°, so that the scissor bracing steel pipe 5 simultaneously forms space in the horizontal and vertical planes. The X-shaped intersecting grid, the other end of the scissor bracing steel pipe is connected to the adjacent upright in a closed loop via the universal joint connector 6—the ball head 61 deflects ±30° in the ball socket 62 in three dimensions, the deflection torque is reduced in real time by the thrust bearing, after the angle is determined, the four spring claws of the buckle assembly 621 are simultaneously embedded into the ball head annular groove, completing the "angle-axial" double locking; the locking L-shaped locking rod 81 + locking seat 82 provides axial anti-slip insurance between the adapter tube and the scissor bracing steel pipe, forming a three-level anti-loosening system of "length scale → limit groove → interference hole". Thus, the supporting steel pipe columns, annular clamping bases, cross bogies, adapter pipes, scissor bracing steel pipes, and universal joint connectors are sequentially connected to form a complete "upright-node-diagonal brace" spatial truss. Horizontal loads are transferred through the scissor bracing steel pipes → ball joints → ball sockets → uprights, while vertical loads are transferred through the adapter pipes → cross bogies → annular clamping bases → uprights. The two sets of force flows converge and balance each other at the nodes, increasing the radial stiffness of the system by ≥40%. Furthermore, since the angles and lengths of each component can be infinitely adjusted, they can be prefabricated in the factory and then installed on-site with "zero welding and zero bolts" in one go. This ensures construction efficiency while enabling the bridge pier support frame to form a stable, measurable, and repeatable closed force ring, completely eliminating the slippage and stress concentration hazards caused by the "single-point rigid compression + non-adjustable angle" of traditional scissor bracing.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scissor bracing device based on steel pipe columns for bridge construction, characterized in that, The system includes a supporting steel pipe column (1), an annular clamping base (2), a cross bogie (3), and an adapter tube (4). The back of the annular clamping base (2) is provided with a clamping plate (211). The annular clamping base (2) is fixed to the supporting steel pipe column (1) through the clamping plate (211). The bottom of the cross bogie (3) is inserted into the annular clamping base (2). The adapter tube (4) is located at the four opposite corners of the cross bogie (3). A scissor bracing steel pipe (5) is provided at one end of the adapter tube (4) away from the cross bogie (3). A universal joint connector (6) is provided at one end of the scissor bracing steel pipe (5) away from the adapter tube (4). The two ends of the universal joint connector (6) are respectively bound to the scissor bracing steel pipe (5) and the supporting steel pipe column (1).

2. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 1, characterized in that, The universal joint connector (6) consists of a ball joint (61) fixed to the end of the scissor brace steel pipe (5) and a ball socket (62) fixed to the supporting steel pipe column (1). The ball joint (61) can be deflected in three dimensions within the ball socket (62) through the universal joint (610). The outer walls of the ball joint (61) and the ball socket (62) are provided with a snap-fit ​​assembly (621). The snap-fit ​​assembly (621) is used to fix the ball joint (61) and the ball socket (62) to complete the closed fixation.

3. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 1, characterized in that, The cross bogie (3) is connected to the scissor bracing steel pipe (5) through the adapter pipe (4). The end of the scissor bracing steel pipe (5) is slidably inserted into the adapter pipe (4), and the end of the adapter pipe (4) is slidably inserted into the cross bogie (3). Both are fixed relative to each other by locking members.

4. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 3, characterized in that, The locking component includes an L-shaped locking rod (81) and at least one locking seat (82). A corresponding insertion hole (810) is provided at the connection point where the cross-shaped bogie (3), the adapter tube (4), and the scissor brace steel tube (5) interlock, allowing the locking rod (81) to pass through. The locking seat (82) is fixedly disposed below the insertion hole (810), and has an internal receiving groove. The front end of the locking rod (81) is engaged within the receiving groove of the locking seat (82).

5. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 1, characterized in that, The number of the supporting steel pipe columns (1) is several. Several of the supporting steel pipe columns (1) are close to one of the annular clamping bases (2). The middle end of the column is provided with a positioning hole (101). The clamping plate (211) is provided with fixing holes (2110) at both ends of the positioning frame (101). A positioning pin (7) is inserted inside the fixing hole (2110). The positioning pin (7) passes through the fixing hole (2110) and the positioning hole (101) and extends to the outside of the fixing hole (2110). The tail end of the positioning pin (7) is threaded with a fixing cap (71).

6. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 3, characterized in that, The outer wall of the adapter tube (4) is provided with length markings along the length direction. The insertion end of the scissor bracing steel pipe (5) is provided with a limiting protrusion. The inner wall of the adapter tube (4) is provided with a corresponding limiting groove. The limiting protrusion slides along the limiting groove and can limit the maximum insertion depth of the scissor bracing steel pipe (5).

7. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 1, characterized in that, The supporting steel pipe column (1) includes an upright, a longitudinal horizontal bar, a transverse horizontal bar, a malleable cast iron swivel coupler and a cross coupler. The longitudinal horizontal bar and the transverse horizontal bar are respectively connected to different height positions of the upright through the cross coupler.

8. The scissor bracing device based on supporting steel pipe columns for bridge construction according to claim 1, characterized in that, The annular clamping base (2) and the clamping plate (211) are movably connected by a hinge plate (201).

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