A scissors support connecting member for viaduct construction

Abstract

The application relates to the technical field of bridge construction, in particular to a scissors support connecting component for viaduct construction, which comprises a cross connecting seat, scissors support extension rods and scissors support fixing devices, the cross connecting seat comprises an upper rotating seat and a lower rotating seat which are rotationally connected through rotating shafts, and the ends of the upper rotating seat and the lower rotating seat are provided with first connecting devices. The scissors support connecting component designed by the application can effectively realize the quick extension between the scissors support extension rods through the first connecting devices and second connecting devices, then the scissors support extension rods are quickly connected with external scaffolds by the scissors support fixing devices, and the inclination angle and distance between the front end fixing device and the rear end fixing device can be adjusted by the scissors support fixing devices during the connecting process, so that the connection of the rods on the external scaffolds in different directions and distances is adapted, the installation efficiency is effectively improved, and the support performance of the scissors support structure on the scaffold is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a scissor brace connection component for the construction of viaducts. Background Technology

[0002] Scissor bracing is a structure erected on scaffolding to provide diagonal support, effectively strengthening the longitudinal rigidity of the scaffolding and preventing deformation. In the construction of elevated bridges, the safety of the scaffolding is crucial for the smooth progress of construction work. Because the scaffolding is often narrow during bridge construction, it frequently needs to bend along piers and other points. However, traditional scissor bracing structures are mainly used to fix the scaffolding to the outermost steel pipe structure. Furthermore, the length and direction of the connectors used to connect the scaffolding and the scissor bracing structure cannot be freely adjusted; they can only contact scaffolding members on the same plane. This means that the support provided by the scissor bracing structure is limited to the outermost layer of scaffolding members. Scaffolding members further away that cannot be connected are not directly supported by the scissor bracing structure, necessitating the addition of numerous other connectors at bends and other points to improve the overall strength of the structure.

[0003] If a novel scissor brace connection component that can change the connection angle and connection length to connect scaffolding steel pipes at various locations is invented, such problems can be effectively solved. Therefore, we provide a scissor brace connection component for elevated bridge construction. Summary of the Invention

[0004] The purpose of this invention is to provide a scissor brace connection component for the construction of elevated bridges, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a scissor brace connection component for elevated bridge construction, comprising a cross connection seat, a scissor brace extension member, and a scissor brace fixing device;

[0006] The cross connector includes an upper rotating seat and a lower rotating seat that are rotatably connected by a rotating shaft, and both the upper rotating seat and the lower rotating seat are provided with a first connecting device at their ends.

[0007] The scissor brace extension member is used to be fixed on the cross connector and fixed to the external scaffolding. The scissor brace extension member includes a sliding rod. One end of the sliding rod is provided with a first connecting device, and the other end of the sliding rod is fixedly provided with a second connecting device through a steering device for fixed connection with the first connecting device located on the cross connector or the first connecting device on other sliding rods.

[0008] The sliding rod is provided with a scissor brace fixing device for connecting the scissor brace extension rod and the external scaffolding. The scissor brace fixing device includes a front fixing device fixed to the sliding rod. A comprehensive adjustment device capable of rotating and adjusting its own length is connected below the front fixing device. A rear fixing device for fixing the external scaffolding is fixedly installed below the comprehensive adjustment device.

[0009] Preferably, the first connecting device includes a clamping groove fixedly installed on the upper rotating seat, the lower rotating seat, or the sliding rod. A clamping rotating arm is rotatably installed on the clamping groove, and a cam for pressing and fixing the second connecting device is provided on the clamping rotating arm. A connecting insertion hole for clamping and fixing the second connecting device is provided on the side of the clamping groove, and a pull handle is connected to the side of the clamping groove through a return spring. A limiting fixing rod for inserting and fixing the clamping rotating arm is fixedly installed on the pull handle.

[0010] Preferably, the steering device includes a rotating sleeve fixed to one end of the sliding rod where the first connecting device is not installed, and a rotating positioning column is rotatably mounted on the rotating sleeve. The rotating positioning column is fixed to the second connecting device, and the rotating sleeve is fixedly connected to the rotating positioning column by an adjusting fixing screw.

[0011] Preferably, the second connecting device includes a connecting platform fixed to the rotating positioning post, and a clamping protrusion that is slidably installed on the connecting platform and the clamping groove is fixedly installed on the connecting platform. A rotating arm is rotatably installed on the upper end of the clamping protrusion, and a plug-in post that is plugged into the connecting socket is fixedly installed on the rotating arm.

[0012] Preferably, the front-end fixing device includes a sliding seat that is slidably mounted to the sliding rod, and the sliding seat is fixed to the sliding rod by a side fixing screw.

[0013] Preferably, a top cover plate for closing the upper end of the sliding seat is slidably installed on the top of the sliding seat, and guide protrusions for sliding cooperation with the sliding rod are fixedly installed on both the top cover plate and the sliding seat. A side limiting block for limiting the top cover plate is provided on the side of the sliding seat, and a closing sliding post for limiting the top cover plate is provided on the sliding seat at a symmetrical position corresponding to the side limiting block. A connecting plate is fixed to the end of the closing sliding post, and the connecting plate is connected to the sliding seat by a tightening spring.

[0014] Preferably, the integrated adjustment device includes an upper rotating arm rotatably mounted to the sliding seat, and the upper rotating arm and the sliding seat are fixedly mounted by an upper positioning screw. An upper connecting sleeve is rotatably mounted on the lower end of the upper rotating arm, and a middle screw is threadedly mounted on the lower end of the upper connecting sleeve. A lower connecting sleeve is threadedly mounted on the lower end of the middle screw, and a lower rotating arm is rotatably mounted on the lower end of the lower connecting sleeve. The lower end of the lower rotating arm is rotatably mounted to the rear end fixing device.

[0015] Preferably, the lower part of the upper rotating arm is integrally formed with a first limiting post at the head end, and the top of the upper connecting sleeve is integrally formed with a second limiting post at the head end, which is engaged with the first limiting post at the head end and used to limit the rotation angle between the upper rotating arm and the upper connecting sleeve. The upper end of the lower rotating arm is integrally formed with a second limiting post at the rear end, and the bottom of the lower connecting sleeve is integrally formed with a first limiting post at the rear end, which is engaged with the second limiting post at the rear end and used to limit the rotation angle between the lower rotating arm and the lower connecting sleeve.

[0016] Preferably, the rear fixing device includes an upper sleeve that is rotatably mounted to the lower rotating arm, and the lower rotating arm and the upper sleeve are fixed together by a lower fixing screw. One end of the upper sleeve is hinged to the lower sleeve and used to fit and fix the external scaffolding, and the other end of the upper sleeve is fixed to the lower sleeve by bolts. A clamping screw for pressing and fixing the external scaffolding is screwed onto the upper sleeve.

[0017] Preferably, the cross connector is provided with a limiting device for adjusting the rotation angle between the upper and lower rotating seats. The limiting device includes a guide hole on the upper rotating seat, and a ball-head limiting slide rod is slidably installed in the guide hole. The lower rotating seat is provided with at least eight positioning holes arranged in a circumferential array to slide and engage with the ball-head limiting slide rod. The top of the ball-head limiting slide rod is driven by a compression spring to slide along the guide hole. An adjusting screw for adjusting the position of the compression plate by pressing is screwed above the guide hole.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The scissor brace connecting component designed in the present invention can effectively realize the rapid extension between the scissor brace extension members through the first connecting device and the second connecting device, and then use the scissor brace fixing device to quickly connect the scissor brace extension members to the external scaffolding. In addition, during the connection process, the scissor brace fixing device can also adjust the tilt angle and distance between the front fixing device and the rear fixing device, thereby adapting to the connection of members on the external scaffolding in different directions and at different distances, effectively improving the installation efficiency and the support performance of the scissor brace structure for the scaffolding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection between the scissor brace extension member and the scissor brace fixing device in Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the scissor brace extension member in Embodiment 1 of the present invention;

[0022] Figure 4This is a schematic diagram of the scissor brace fixing device in Embodiment 1 of the present invention;

[0023] Figure 5 This is a side view of the scissor brace fixing device in Embodiment 1 of the present invention;

[0024] Figure 6 This is a cross-sectional view of the cross connector in Embodiment 2 of the present invention.

[0025] In the diagram: 1. Cross connector; 101. Upper rotating seat; 102. Lower rotating seat; 2. Limiting device; 201. Adjusting knob; 202. Extrusion plate; 203. Guide hole; 204. Extrusion spring; 205. Positioning hole; 206. Ball head limiting slide bar; 3. First connecting device; 301. Connecting socket; 302. Pull handle; 303. Return spring; 304. Clamping groove; 305. Cam; 306. Limiting fixing rod; 307. Clamping rotating arm; 4. Steering device; 401. Rotating positioning column; 402. Rotating sleeve; 403. Adjusting fixing knob; 5. Front fixing device; 501. Top cover plate; 502. Side limiting block; 503. Sliding seat; 504. Side fixing knob; 505. Enclosed sliding block 506. Column; 507. Tensioning spring; 508. Connecting plate; 509. Guide protrusion; 6. Integrated adjustment device; 601. Upper rotating arm; 602. Upper positioning screw; 603. Lower fixing screw; 604. Upper connecting sleeve; 605. Middle screw; 606. Lower connecting sleeve; 607. Lower rotating arm; 7. Rear end fixing device; 701. Pressing screw; 702. Upper housing; 703. Lower housing; 8. Second connecting device; 801. Insertion column; 802. Rotating arm; 803. Connecting platform; 804. Clamping protrusion; 9. Rear end second limiting column; 10. Scissor brace extension rod; 11. Scissor brace fixing device; 12. Sliding rod; 13. First limiting column at the head end; 14. Second limiting column at the head end; 15. First limiting column at the rear end. Detailed Implementation

[0026] 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 technical solutions 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.

[0027] Example 1, please refer to Figures 1 to 6The present invention provides a technical solution: a scissor bracing connection component for the construction of elevated bridges, including a cross connecting seat 1, a scissor bracing extension member 10, and a scissor bracing fixing device 11. The cross connecting seat 1 includes an upper rotating seat 101 and a lower rotating seat 102 rotatably connected by a rotating shaft, and the ends of the upper rotating seat 101 and the lower rotating seat 102 are each provided with a first connecting device 3. The cross connecting seat 1 fixes the scissor bracing extension member 10 through the first connecting device 3, thereby forming a scissor bracing structure.

[0028] Please see Figure 2 and Figure 3 Please refer to the scissor brace extension member 10, which is used to fix on the cross connector 1 and to the external scaffold. The scissor brace extension member 10 includes a sliding rod 12. One end of the sliding rod 12 is provided with a first connecting device 3, and the other end of the sliding rod 12 is fixedly provided with a second connecting device 8 through a turning device 4 for fixed connection with the first connecting device 3 located on the cross connector 1 or the first connecting device 3 on other sliding rods 12. The turning device 4 is used to change the installation angle between the sliding rod 12 and the first connecting device 3 located at the end of the sliding rod 12, thereby facilitating the installation of the sliding rod 12 with the external scaffold. The scissor brace extension members 10 can also be connected in series through the cooperation between the first connecting device 3 and the second connecting device 8, thereby effectively extending the support range of the scissor brace structure.

[0029] Please see Figure 2 , Figure 4 and Figure 5 The sliding rod 12 is provided with a scissor brace fixing device 11 for connecting the scissor brace extension rod 10 and the external scaffolding. The scissor brace fixing device 11 includes a front fixing device 5 fixed to the sliding rod 12. A comprehensive adjustment device 6 capable of rotating and adjusting its own length is connected below the front fixing device 5. A rear fixing device 7 for fixing the external scaffolding is fixedly installed below the comprehensive adjustment device 6.

[0030] Please see Figure 2 and Figure 3The first connecting device 3 includes a clamping groove 304 fixedly installed on the upper rotating seat 101, the lower rotating seat 102, or the sliding rod 12. A clamping rotating arm 307 is rotatably installed on the clamping groove 304, and a cam 305 for pressing and fixing the second connecting device 8 is provided on the clamping rotating arm 307. A connecting insertion hole 301 for clamping and fixing the second connecting device 8 is provided on the side of the clamping groove 304, and a pull handle 302 is connected to the side of the clamping groove 304 through a return spring 303. A limiter for inserting and fixing the clamping rotating arm 307 is fixedly installed on the pull handle 302. The positioning rod 306 and the steering device 4 include a rotating sleeve 402 fixed to the end of the sliding rod 12 where the first connecting device 3 is not installed. A rotating positioning post 401 is rotatably mounted on the rotating sleeve 402. The rotating positioning post 401 is fixed to the second connecting device 8. The rotating sleeve 402 is fixedly connected to the rotating positioning post 401 by an adjusting fixing screw 403. The second connecting device 8 includes a connecting platform 803 fixed to the rotating positioning post 401. A clamping protrusion 804 is fixedly mounted on the connecting platform 803 and slidably mounted on the clamping groove 304. A rotating arm 802 is rotatably mounted on the upper end of the device, and a plug-in post 801 is fixedly mounted on the rotating arm 802 to be inserted into the connecting socket 301. When the first connecting device 3 and the second connecting device 8 need to be installed together, the locking protrusion 804 is first fully inserted into the locking groove 304. Then, the rotating arm 802 is rotated so that the plug-in post 801 can be aligned with the connecting socket 301. At this time, the locking rotating arm 307 is rotated so that the cam 305 presses against the locking protrusion 804, thereby causing the cam 305 to press the plug-in post 801 into the connecting socket 301, so that the first connecting device 8 can be installed together. 3 and the second connecting device 8 can be completely fixed. Then, the clamping rotating arm 307 can be fixed by the limiting fixing rod 306 to prevent it from rotating. This quick fixing and placement of the first connecting seat 3 and the second connecting seat 8 can replace the traditional method of fixing by threaded connection. It effectively avoids the problem of disassembly and installation difficulties caused by thread damage and rust, and improves the assembly efficiency. Thus, it is convenient to install the scissor brace extension rod 10 on the cross connecting seat 1, or to connect the scissor brace extension rods 10 in series to extend the support range of the scissor brace structure.

[0031] Please see Figure 2 , Figure 4 and Figure 5The front-end fixing device 5 includes a sliding seat 503 slidably mounted to the sliding rod 12, and the sliding seat 503 is fixed to the sliding rod 12 by a side fixing screw 504. A top cover plate 501 for closing the upper end of the sliding seat 503 is slidably mounted on the top of the sliding seat 503, and guide protrusions 508 that slide with the sliding rod 12 are fixedly mounted on both the top cover plate 501 and the sliding seat 503. A side limiting block 502 for limiting the top cover plate 501 is provided on the side of the sliding seat 503, and a closing sliding post 505 for limiting the top cover plate 501 is provided on the sliding seat 503 at a symmetrical position corresponding to the side limiting block 502. A connecting plate 507 is fixed to the end of the closing sliding post 505, and the connecting plate 507 is connected to the sliding seat 503. The three components are connected by a tensioning spring 506. The integrated adjustment device 6 includes an upper rotating arm 601 rotatably mounted to the sliding seat 503, and the upper rotating arm 601 is fixedly mounted to the sliding seat 503 by an upper positioning screw 602. An upper connecting sleeve 604 is rotatably mounted on the lower end of the upper rotating arm 601, and a middle screw 605 is threadedly mounted on the lower end of the upper connecting sleeve 604. A lower connecting sleeve 606 is threadedly mounted on the lower end of the middle screw 605, and a lower rotating arm 607 is rotatably mounted on the lower end of the lower connecting sleeve 606. The lower end of the lower rotating arm 607 is rotatably mounted to the rear end fixing device 7. A first limiting post 13 is integrally formed at the lower part of the upper rotating arm 601, and a first limiting post 13 is integrally formed at the top of the upper connecting sleeve 604. A first end second limiting post 14 is clamped to the first end limiting post 13 and used to limit the rotation angle between the upper rotating arm 601 and the upper connecting sleeve 604. A rear end second limiting post 9 is integrally formed at the upper end of the lower rotating arm 607, and a rear end first limiting post 15 is integrally formed at the bottom of the lower connecting sleeve 606, which clamps to the rear end second limiting post 9 and is used to limit the rotation angle between the lower rotating arm 607 and the lower connecting sleeve 606. The rear end fixing device 7 includes an upper sleeve 702 rotatably mounted to the lower rotating arm 607, and the lower rotating arm 607 and the upper sleeve 702 are fixed by a lower fixing screw 603. One end of the upper sleeve 702 is hinged to the lower sleeve 703 and used to fit and fix the external scaffolding, and the other end of the upper sleeve 702 is hinged to the lower sleeve 703. 703 is fixed by bolts. A clamping button 701 for tightening and fixing the external scaffolding is screwed onto the upper housing 702. First, the sliding seat 503 can be quickly fixed to the sliding rod 12 using the side fixing button 504. When it is necessary to remove the front fixing device 5 from the sliding rod 12 or install more front fixing devices 5 on the sliding rod 12, the connecting plate 507 can be pressed downwards, thus removing the limiting effect of the closing sliding column 505 on the top cover plate 501. At this point, the top cover plate 501 can be removed from the sliding seat 503 to remove or install the sliding seat 503 from the sliding rod 12. Then, the top cover plate 501 is slid back into the sliding seat 503 and closed using the closing sliding column 505.When the rear fixing device 7 needs to be installed on the external scaffolding, simply loosen the bolts between the upper sleeve 702 and the lower sleeve 703, then install the scaffolding members between the upper sleeve 702 and the lower sleeve 703. Next, use the bolts to seal the space between the upper sleeve 702 and the lower sleeve 703 again. Finally, use the clamping bolts 701 to press and fix the external scaffolding members located between the upper sleeve 702 and the lower sleeve 703. This allows for the fixing of scaffolding members of different diameters. The device is adapted for fixation. When it is necessary to change the relative angle between the front fixing device 5 and the rear fixing device 7, the upper rotating arm 601 and the lower rotating arm 607 can be rotated and then re-fixed using the upper positioning screw 602 and the lower fixing screw 603. At this time, the relative angle between the front fixing device 5 and the rear fixing device 7 can be changed. This is combined with the rotation of the upper rotating arm 601 and the upper connecting sleeve 604 within a certain angle, and the rotation of the lower rotating arm 607 and the lower connecting sleeve 606. The rotational action within a certain angle can greatly improve the overall degree of freedom of the scissor brace fixing device 11, allowing different scissor brace fixing devices 11 on the same scissor brace extension member 10 to be simultaneously fixed to external scaffold members with different inclination angles. When it is necessary to change the relative distance between the front fixing device 5 and the rear fixing device 7, simply rotate the middle screw 605. The distance at which the middle screw 605 is screwed into the upper connecting sleeve 604 and the lower connecting sleeve 606 is changed according to the rotation direction of the middle screw 605, thereby changing the distance between the front fixing device 5 and the rear fixing device 7. This ensures that the scissor brace fixing device 11 can provide good fixing to external scaffold members at different distances. Furthermore, to increase the adjustable distance range of the integrated adjustment device 6, the middle screw 605 can be manufactured in multiple different lengths, such as 15cm, 30cm, and 50cm. The appropriate middle screw 605 model can be changed according to the distance between the external scaffold member and the scissor brace extension member 10, facilitating better coordination.

[0032] In this embodiment, the scissor brace connecting component designed in this invention can effectively achieve rapid extension between the scissor brace extension members 10 through the first connecting device 3 and the second connecting device 8. Then, the scissor brace fixing device 11 is used to quickly connect the scissor brace extension members 10 to the external scaffolding. During the connection process, the scissor brace fixing device 10 can also adjust the tilt angle and distance between the front fixing device 5 and the rear fixing device 7, thereby adapting to the connection of members on the external scaffolding in different directions and at different distances. This effectively improves the installation efficiency and the support performance of the scissor brace structure for the scaffolding, and has high practical value.

[0033] Example 2, please refer to Figure 6Compared to Embodiment 1, this embodiment also includes a limiting device 2 on the cross-connecting seat 1 for adjusting the rotation angle between the upper rotating seat 101 and the lower rotating seat 102. The limiting device 2 includes a guide hole 203 on the upper rotating seat 101, and a ball-head limiting slide rod 206 is slidably installed in the guide hole 203. At least eight positioning holes 205 are arranged in a circumferential array on the lower rotating seat 102 to slide and engage with the ball-head limiting slide rod 206. The top of the ball-head limiting slide rod 206 is driven by a compression spring 204 to slide along the guide hole 203 to form a compression piece 202. An adjusting screw 201 for adjusting the position of the compression piece 202 by pressing is screwed onto the top of the guide hole 203. To facilitate the connection between the cross-connecting device 1 and the lower rotating seat 1, the limiting device 2 is provided with a limiting device 2 for adjusting the rotation angle between the upper rotating seat 101 and the lower rotating seat 102. The scissor brace extension member 10 is connected at a specified angle. The operator can manually move the upper rotating seat 101 and the lower rotating seat 102, thereby making the upper rotating seat 101 and the lower rotating seat 102 present a specified rotation angle. Specifically, when the user rotates the upper rotating seat 101 and the lower rotating seat 102 to make them rotate relative to each other, the ball head limiting slide rod 206 will be pushed by the side wall of the positioning hole 205, thereby causing the ball head limiting slide rod 206 to slide along the guide hole 203 and leave the positioning hole 205. At this time, the ball head limiting slide rod 206 will lose its limiting function, thereby allowing the upper rotating seat 101 and the lower rotating seat 102 to rotate relative to each other. After the rotation is in place, the ball head limiting slide rod 206 will... Under the compression of the compression spring 204, the compression piece is forced into the nearest positioning hole 205, thus restoring the limiting effect between the upper rotating seat 101 and the lower rotating seat 102. This prevents spontaneous rotation between the upper rotating seat 101 and the lower rotating seat 102, assisting the operator in more accurately changing the installation direction of the scissor brace during the initial installation. Additionally, the operator can adjust the screw 201 to change the position of the compression piece 202 within the positioning hole 205, thereby altering the maximum distance between the compression piece 202 and the ball-end limiting slide bar 206. This effectively changes the compression force of the compression spring 204 on the ball-end limiting slide bar 206, indirectly altering the distance between the upper rotating seat 101 and the lower rotating seat 102. The difficulty of adjusting the angle between the upper and lower rotating seats 101 and 102 depends on the force required between the seats 102 to push the ball-end limiting slide rod 206 out of the positioning hole. When there's no need to pre-change the upper and lower rotating seats 101 and 102, simply rotating the adjusting knob 201 to the furthest point from the ball-end limiting slide rod 206 will prevent it from being pressed into the positioning hole 205 by the compression spring 204. However, when rotation between the upper and lower rotating seats 101 and 102 is not desired after the scissor brace is fully installed, simply rotating the adjusting knob 201 to the closest point to the ball-end limiting slide rod 206 will allow the compression spring 204 to apply maximum compressive force to the ball-end limiting slide rod 206.At this point, external rotation of the upper rotating seat 101 and the lower rotating seat 102 is almost insufficient to disengage the ball head limiting slide rod 206 from the positioning hole 205, thus preventing any change in the angle between the upper rotating seat 101 and the lower rotating seat 102, making it more convenient to use.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A scissor brace connection component for elevated bridge construction, characterized in that: It includes a cross connector (1), a scissor brace extension member (10), and a scissor brace fixing device (11). The cross connector (1) includes an upper rotating seat (101) and a lower rotating seat (102) rotatably connected by a rotating shaft, and the ends of the upper rotating seat (101) and the lower rotating seat (102) are provided with a first connecting device (3). The scissor brace extension member (10) is used to fix on the cross connector (1) and to fix to the external scaffolding. The scissor brace extension member (10) includes a sliding rod (12). One end of the sliding rod (12) is provided with a first connecting device (3), and the other end of the sliding rod (12) is fixedly provided with a second connecting device (8) through a turning device (4) for fixed connection with the first connecting device (3) located on the cross connector (1) or the first connecting device (3) on other sliding rods (12). The sliding rod (12) is provided with a scissor brace fixing device (11) for connecting the scissor brace extension rod (10) and the external scaffold. The scissor brace fixing device (11) includes a front-end fixing device (5) fixed to the sliding rod (12). A comprehensive adjustment device (6) capable of rotating and adjusting its own length is connected below the front-end fixing device (5). A rear-end fixing device (7) for fixing the external scaffold is fixedly installed below the comprehensive adjustment device (6). The first connecting device (3) includes a clamping groove (304) fixedly mounted on the upper rotating seat (101), the lower rotating seat (102), or the sliding rod (12). A clamping rotating arm (307) is rotatably mounted on the clamping groove (304), and a cam (305) for pressing and fixing the second connecting device (8) is provided on the clamping rotating arm (307). A connecting insertion hole (301) for clamping and fixing the second connecting device (8) is provided on the side of the clamping groove (304), and a return spring (303) connects the side of the clamping groove (304) to a connecting hole (301) for clamping and fixing the second connecting device (8). A pull handle (302) is provided, and a limiting fixing rod (306) for inserting and fixing the rotating arm (307) is fixedly installed on the pull handle (302); the steering device (4) includes a rotating sleeve (402) fixed to one end of the sliding rod (12) without the first connecting device (3) installed, and a rotating positioning column (401) is rotatably installed on the rotating sleeve (402), the rotating positioning column (401) is fixed to the second connecting device (8), and the rotating sleeve (402) is fixedly connected to the rotating positioning column (401) by adjusting the fixing screw (403); The second connecting device (8) includes a connecting platform (803) fixed to the rotating positioning post (401), and a clamping protrusion (804) that is slidably installed on the connecting platform (803) and the clamping groove (304) is fixedly installed on the connecting platform (803). A rotating arm (802) is rotatably installed on the upper end of the clamping protrusion (804), and a plug-in post (801) that is plugged into the connecting socket (301) is fixedly installed on the rotating arm (802).

2. The scissor brace connection component for elevated bridge construction according to claim 1, characterized in that: The front-end fixing device (5) includes a sliding seat (503) that is slidably mounted to the sliding rod (12), and the sliding seat (503) is fixed to the sliding rod (12) by a side fixing screw (504).

3. A scissor brace connection component for elevated bridge construction according to claim 2, characterized in that: The top of the sliding seat (503) is slidably mounted with a top cover plate (501) for closing the upper end of the sliding seat (503), and both the top cover plate (501) and the sliding seat (503) are fixedly mounted with guide protrusions (508) that slide in cooperation with the sliding rod (12). The side of the sliding seat (503) is provided with a side limiting block (502) for limiting the top cover plate (501), and the sliding seat (503) is provided with a closing sliding post (505) for limiting the top cover plate (501) at a symmetrical position corresponding to the side limiting block (502). The end of the closing sliding post (505) is fixed with a connecting plate (507), and the connecting plate (507) is connected to the sliding seat (503) by a tightening spring (506).

4. A scissor brace connection component for elevated bridge construction according to claim 3, characterized in that: The integrated adjustment device (6) includes an upper rotating arm (601) rotatably mounted to a sliding seat (503), and the upper rotating arm (601) and the sliding seat (503) are fixedly mounted by an upper positioning screw (602). An upper connecting sleeve (604) is rotatably mounted on the lower end of the upper rotating arm (601), and a middle screw (605) is threadedly mounted on the lower end of the upper connecting sleeve (604). A lower connecting sleeve (606) is threadedly mounted on the lower end of the middle screw (605), and a lower rotating arm (607) is rotatably mounted on the lower end of the lower connecting sleeve (606). The lower end of the lower rotating arm (607) is rotatably mounted to the rear end fixing device (7).

5. A scissor brace connection component for elevated bridge construction according to claim 4, characterized in that: The upper rotating arm (601) has a first end limiting post (13) integrally formed at its lower end, and the upper connecting sleeve (604) has a second end limiting post (14) integrally formed at its top, which is clamped to the first end limiting post (13) and used to limit the rotation angle between the upper rotating arm (601) and the upper connecting sleeve (604). The lower rotating arm (607) has a second rear end limiting post (9) integrally formed at its upper end, and the lower connecting sleeve (606) has a first rear end limiting post (15) integrally formed at its bottom, which is clamped to the second rear end limiting post (9) and used to limit the rotation angle between the lower rotating arm (607) and the lower connecting sleeve (606).

6. A scissor brace connection component for elevated bridge construction according to claim 5, characterized in that: The rear fixing device (7) includes an upper sleeve (702) rotatably mounted to the lower rotating arm (607), and the lower rotating arm (607) and the upper sleeve (702) are fixed together by a lower fixing screw (603). One end of the upper sleeve (702) is hinged to the lower sleeve (703) and used to fit and fix the external scaffolding, and the other end of the upper sleeve (702) is fixed to the lower sleeve (703) by bolts. A clamping screw (701) for clamping and fixing the external scaffolding is screwed onto the upper sleeve (702).

7. A scissor brace connection component for elevated bridge construction according to claim 1, characterized in that: The cross-connector (1) is provided with a limiting device (2) for adjusting the rotation angle between the upper rotating seat (101) and the lower rotating seat (102). The limiting device (2) includes a guide hole (203) opened on the upper rotating seat (101), and a ball-head limiting slide rod (206) is slidably installed in the guide hole (203). The lower rotating seat (102) is provided with at least eight positioning holes (205) arranged in a circumferential array to slide and engage with the ball-head limiting slide rod (206). The top of the ball-head limiting slide rod (206) is driven by a compression spring (204) to slide along the guide hole (203). An adjusting screw (201) for adjusting the position of the extrusion plate (202) by pressing is screwed on the top of the guide hole (203).

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