Bridge hanging basket construction structure and construction method thereof

Abstract

This invention discloses a bridge hanging basket construction structure and its construction method, comprising: a main truss, a main truss traveling mechanism, a secondary crossbeam traveling mechanism, a hanging basket formwork, and a main truss protective structure; the main truss includes a crossbeam, the crossbeam including a main crossbeam and secondary crossbeams disposed at both ends of the main crossbeam, the main crossbeam and the secondary crossbeams being detachably connected; the main truss traveling mechanism is disposed at the bottom of the main truss, and the main truss traveling mechanism can drive the main truss to travel; the secondary crossbeam traveling mechanism is located below the secondary crossbeam, and the secondary crossbeam traveling mechanism can support the secondary crossbeam after it is separated from the main crossbeam, and drive the secondary crossbeam after it is separated from the main crossbeam to travel; the main crossbeam... After the main crossbeam and secondary crossbeam separate, the main crossbeam can pass between the stay cables on both sides of the cable-stayed bridge under the drive of the main truss traveling mechanism, and the secondary crossbeam can pass outside the stay cables on both sides of the cable-stayed bridge under the drive of the secondary crossbeam traveling mechanism; the hanging basket formwork is connected to the secondary crossbeam via a suspension structure; the main truss protective structure includes a primary fall protection net installation block and a primary fall protection net. The primary fall protection net installation block can be hung on the secondary crossbeam via eyelets, and the primary fall protection net installation block is equipped with a sliding groove; one end of the primary fall protection net is equipped with a sliding rod that can be inserted into the sliding groove, and the other end of the primary fall protection net can be hung on the hanging basket formwork via eyelets. This approach aims to reduce the labor intensity of workers and accelerate the construction progress while ensuring safety.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for bridge construction, and more particularly to a bridge hanging basket construction structure and its construction method. Background Technology

[0002] The formwork is a core piece of equipment in the segmented construction of prestressed concrete continuous beams, T-shaped steel structures, and cantilever beams, and it needs to be dismantled after the bridge is closed. For cable-stayed bridges crossing highways, after the bridge is closed in the middle, it is difficult to close the highway beneath the bridge, so the construction team cannot directly set up hoisting equipment on the highway to dismantle the formwork. Therefore, the formwork needs to be moved back to both ends of the bridge for dismantling. However, due to the excessive length of the formwork's crossbeams, it will inevitably be obstructed by the bridge's stay cables during the retraction process. Although directly and destructively dismantling the formwork can avoid the obstruction of the stay cables, this will affect the reuse of the formwork, increase the labor intensity of workers, and negatively impact the construction progress.

[0003] Given the high-altitude nature of hanging basket construction, the installation of fall protection nets is essential to ensure the safety of construction workers. However, falling materials and tools during construction may damage the netting. If not replaced in time, the netting may break when bearing falling objects again, creating a safety hazard. Therefore, timely replacement of fall protection nets is crucial. Currently, most construction teams directly tie the fall protection nets to the scaffolding on the outside of the bridge. This cumbersome setup and dismantling process increases the labor intensity of workers and affects the construction progress. Summary of the Invention

[0004] This invention provides a bridge hanging basket construction structure and its construction method, which reduces the labor intensity of workers and speeds up the construction progress while ensuring safety.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A bridge hanging basket construction structure includes: a main truss, a main truss traveling mechanism, a secondary crossbeam traveling mechanism, a hanging basket formwork, and a main truss protective structure;

[0007] The main truss includes a crossbeam, which includes a main crossbeam and secondary crossbeams disposed at both ends of the main crossbeam. The main crossbeam and the secondary crossbeams are detachably connected.

[0008] The main truss traveling mechanism is located at the bottom of the main truss, and the main truss traveling mechanism can drive the main truss to travel;

[0009] The secondary crossbeam traveling mechanism is located below the secondary crossbeam. The secondary crossbeam traveling mechanism can support the secondary crossbeam after it is separated from the main crossbeam and drive the secondary crossbeam after it is separated from the main crossbeam to travel.

[0010] After the main crossbeam and the secondary crossbeam are separated, the main crossbeam can pass between the stay cables on both sides of the cable-stayed bridge under the drive of the main truss traveling mechanism, and the secondary crossbeam can pass outside the stay cables on both sides of the cable-stayed bridge under the drive of the secondary crossbeam traveling mechanism.

[0011] The hanging basket template is connected to the secondary crossbeam via a suspension structure;

[0012] The main truss protective structure includes a primary fall protection net mounting block and a primary fall protection net. The primary fall protection net mounting block can be hooked onto the secondary crossbeam through a ring hook, and the primary fall protection net mounting block is provided with a sliding groove.

[0013] One end of the primary fall protection net is provided with a sliding rod that can be inserted into the sliding groove, and the other end of the primary fall protection net can be hung on the hanging basket template through a ring hook.

[0014] Furthermore, the secondary crossbeam traveling mechanism includes a track pad beam, a secondary rail, a wheel frame, a jacking device, a push rod, and a mechanical gripper;

[0015] The track pad beam is set on the cable-stayed bridge deck, the sub-rail is set on the track pad beam, the wheel is installed on the wheel frame, the jacking device is installed on the sub-rail, the jacking device can push the wheel frame to make the wheel slide along the sub-rail, one end of the push rod is fixed to the top of the wheel frame, and the other end of the push rod is fixedly connected to the mechanical gripper, the mechanical gripper can clamp the sub-beam.

[0016] Furthermore, the secondary crossbeam traveling mechanism also includes a limiting push rod, which is inclinedly disposed on the top of the wheel frame. After the piston rod of the limiting push rod is extended, it can abut against the gripper of the mechanical gripper, preventing the mechanical gripper from releasing the secondary crossbeam.

[0017] Furthermore, it also includes a beam limiting bolt. The end of the secondary beam is provided with multiple protrusions, and the end of the main beam is provided with multiple grooves corresponding to the protrusions. Bolt holes are opened on both sides of the grooves and on the protrusions. When the protrusions are inserted into the grooves, the beam limiting bolts can pass through the bolt holes opened on both sides of the grooves and on the protrusions, preventing the secondary beam and the main beam from separating.

[0018] Furthermore, the main truss protective structure also includes a transition net and a secondary fall protection net, with the secondary fall protection net located below the primary fall protection net;

[0019] One end of the secondary fall protection net can be hung on the hanging basket template through the eyelet hook, and the other end of the secondary fall protection net is provided with a transition net mounting block, and the transition net mounting block is provided with a transition net groove;

[0020] One end of the transition net can be hooked onto the primary fall protection net via a loop hook, and the other end of the transition net is provided with a transition net slide bar that can be inserted into the transition net slide groove.

[0021] Furthermore, it also includes a bottom walking passage, which is located at the bottom of the hanging basket template. The bottom walking passage has a three-sided enclosed structure, with the three-sided enclosed structure opening towards the side away from the closure point of the cable-stayed bridge.

[0022] Furthermore, it also includes a bottom walking passage safety net, which includes a frame and a protective soft net tied to the frame, and the frame is hung on the bottom walking passage by eyelets.

[0023] Furthermore, the suspension structure includes a steel sling, one end of which is fixed to the hanging basket template, and the other end of which is fixed to the secondary crossbeam.

[0024] The present invention also relates to a construction method for a bridge hanging basket construction structure, including the aforementioned bridge hanging basket construction structure, and further including the following steps;

[0025] S1: After the cable-stayed bridge is closed, the secondary crossbeam traveling mechanism is moved to directly below the secondary crossbeam;

[0026] S2: The hoisting equipment lifts the secondary crossbeam, and the construction workers disassemble the connection between the main crossbeam and the secondary crossbeam. After the disassembly is completed, the hoisting equipment moves the secondary crossbeam laterally to separate the secondary crossbeam from the main crossbeam.

[0027] S3: The secondary crossbeam traveling mechanism supports the secondary crossbeam. The main truss traveling mechanism drives the main truss to move backward from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge. The secondary crossbeam traveling mechanism drives the secondary crossbeam, which has separated from the main crossbeam, to move backward from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge.

[0028] Beneficial effects:

[0029] This invention provides a bridge hanging basket construction structure and its construction method. By dividing the crossbeam into a detachable main crossbeam and a secondary crossbeam, the two can be separated. At the same time, by setting up a main truss traveling mechanism and a secondary crossbeam traveling mechanism, the separated main crossbeam and secondary crossbeam can be retracted separately, allowing the stay cables to pass through the separation point of the main crossbeam and secondary crossbeam without obstructing the crossbeam. This allows the hanging basket to be smoothly retracted to both ends of the bridge for disassembly without damaging the hanging basket structure, reducing the labor intensity of workers and improving construction efficiency.

[0030] Compared to the commonly used method of directly tying the fall protection net to the scaffolding on the outside of the bridge, by designing the main truss protective structure in a way that is easy to assemble and disassemble, it is possible to easily replace the net after it is damaged. This reduces the labor intensity of construction workers and improves construction efficiency. At the same time, since it is directly installed on the main truss and the hanging basket formwork, the main truss protective structure can move with the secondary crossbeam and the hanging basket formwork. Construction workers do not need to continuously build the fall protection net as the hanging basket structure moves forward, which further reduces the labor intensity of construction workers. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a cross-sectional schematic diagram of a bridge hanging basket construction structure with the bottom walking passage removed, as disclosed in this invention.

[0033] Figure 2 This is a top view schematic diagram of a bridge hanging basket construction structure with the bottom walking passage removed, as disclosed in this invention.

[0034] Figure 3 This is a cross-sectional schematic diagram of a bridge hanging basket construction structure disclosed in this invention;

[0035] Figure 4 This is a side view schematic diagram of a bridge hanging basket construction structure disclosed in this invention;

[0036] Figure 5 This is a schematic diagram of the connection between the main crossbeam and the secondary crossbeam of a bridge hanging basket construction structure disclosed in this invention.

[0037] Figure 6 This is a top view schematic diagram of the protective netting for the bottom walking passage of a bridge hanging basket construction structure disclosed in this invention;

[0038] Figure 7 This is a schematic diagram showing the cooperation between the skeleton and the protective soft net of the bottom walking passage of a bridge hanging basket construction structure disclosed in this invention.

[0039] Figure 8 This is a schematic diagram of the secondary crossbeam traveling mechanism of a bridge hanging basket construction structure disclosed in this invention. Figure 1 ;

[0040] Figure 9 This is a schematic diagram of the secondary crossbeam traveling mechanism of a bridge hanging basket construction structure disclosed in this invention. Figure 2 ;

[0041] Figure 10 This is a schematic diagram of a primary fall protection net installation block for a bridge hanging basket construction structure disclosed in this invention;

[0042] Figure 11 This is a schematic diagram of a primary fall protection net for a bridge hanging basket construction structure disclosed in this invention;

[0043] Figure 12 This is a schematic diagram of a transition net for a bridge hanging basket construction structure disclosed in this invention;

[0044] Figure 13 This is a schematic diagram of a secondary fall protection net for a bridge hanging basket construction structure disclosed in this invention;

[0045] Figure 14 This is a schematic diagram of a ring eye hook for a bridge hanging basket construction structure disclosed in this invention;

[0046] Figure 15 This is a schematic diagram of a bridge formwork construction structure disclosed in this invention being moved forward on a cable-stayed bridge;

[0047] Figure 16 This is a schematic diagram of the closure of a bridge hanging basket construction structure disclosed in this invention on a cable-stayed bridge;

[0048] Figure 17 This is a schematic diagram of a bridge hanging basket construction structure disclosed in this invention being moved backward on a cable-stayed bridge.

[0049] In the picture:

[0050] 1. Main truss;

[0051] 2. Main crossbeam; 201. Groove;

[0052] 3. Secondary crossbeam; 301. Protrusion;

[0053] 4. Track support beams;

[0054] 5. Secondary rail;

[0055] 6. Wheel frame;

[0056] 7. Jacking device;

[0057] 8. Push rod;

[0058] 9. Mechanical gripper;

[0059] 10. Wheels;

[0060] 11. Limiting push rod;

[0061] 12. Crossbeam limiting bolts;

[0062] 13. Primary fall protection net installation block; 1301. Slide groove;

[0063] 14. Level 1 fall protection net; 1401. Sliding rod;

[0064] 15. Transition net; 1501. Transition net slide bar;

[0065] 16. Secondary fall protection net;

[0066] 17. Eyelet hook;

[0067] 18. Transition mesh installation block; 1801. Transition mesh chute;

[0068] 19. Bottom walking passage;

[0069] 20. Bottom walking passage safety net; 2001. Frame; 2002. Protective soft net;

[0070] 21. Steel lifting slings;

[0071] 22. Side formwork;

[0072] 23. Base template;

[0073] 24. Main track;

[0074] 25. Reinforcing ribs;

[0075] A. Cable stays; B. Closure point; C. Bridge deck; D. Highway. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0077] Example 1

[0078] This embodiment provides a bridge hanging basket construction structure, including: main truss 1, main truss traveling mechanism, secondary crossbeam traveling mechanism, hanging basket formwork and main truss protective structure;

[0079] like Figures 1 to 3 As shown, the main truss 1 includes a crossbeam, the crossbeam includes a main crossbeam 2 and a secondary crossbeam 3 disposed at both ends of the main crossbeam 2, the main crossbeam 2 and the secondary crossbeam 3 are detachably connected;

[0080] The main truss traveling mechanism is located at the bottom of the main truss 1. The main truss traveling mechanism can drive the main truss 1 to travel. The main truss traveling mechanism can adopt the structure in the prior art. Except for the crossbeam part, the main truss 1 can adopt the structure in the prior art. The specific structure will not be described in detail.

[0081] The secondary crossbeam traveling mechanism is located below the secondary crossbeam 3. The secondary crossbeam traveling mechanism can support the secondary crossbeam 3 after it is separated from the main crossbeam 2, and drive the secondary crossbeam 3 after it is separated from the main crossbeam 2 to travel.

[0082] After the main crossbeam 2 and the secondary crossbeam 3 are separated, the main crossbeam 2 can pass between the cable stays A on both sides of the cable-stayed bridge under the drive of the main truss traveling mechanism, and the secondary crossbeam 3 can pass outside the cable stays A on both sides of the cable-stayed bridge under the drive of the secondary crossbeam traveling mechanism.

[0083] The hanging basket template is connected to the secondary crossbeam 3 via a suspension structure. In this embodiment, as shown... Figures 1 to 3 As shown, the hanging basket template includes a bottom template 23 and side templates 22, with the two side templates 22 respectively fixed on both sides of the bottom template 23;

[0084] like Figure 1 , Figure 3 and Figure 4 As shown, the main truss protective structure includes a primary fall protection net mounting block 13 and a primary fall protection net 14, as... Figure 10 As shown, the primary fall protection net mounting block 13 can be hung on the steel structure of the secondary crossbeam 3 via the eye hook 17. The primary fall protection net mounting block 13 is provided with a sliding groove 1301. In this embodiment, the eye hook 17 is welded and fixed to the primary fall protection net mounting block 13. The primary fall protection net mounting block 13 is provided with two rows of eye hooks 17 to ensure that the primary fall protection net mounting block 13 can be stably installed on the secondary crossbeam 3.

[0085] like Figure 11 As shown, one end of the primary fall protection net 14 is welded with a sliding rod 1401 that can be inserted into the sliding groove 1301, and the other end of the primary fall protection net 14 is welded with a sliding rod 1401 that can be inserted into the sliding groove 1301. Figure 14 The eyelet hook 17 shown is used to hang the primary fall protection net 14 on the steel structure of the hanging basket template.

[0086] Construction workers insert the slide bar 1401 into the slide groove 1301 and hang the eye hook 17 of the primary fall protection net 14 on the steel structure of the hanging basket template to complete the installation of the primary fall protection net 14.

[0087] Compared to existing formwork structures where the crossbeams are integrated, this embodiment provides a bridge formwork construction structure that divides the crossbeams into a detachably connected main crossbeam 2 and a secondary crossbeam 3, allowing them to be separated. Furthermore, by incorporating a main truss traveling mechanism and a secondary crossbeam traveling mechanism, the separated main crossbeam 2 and secondary crossbeam 3 can be retracted independently. This allows the stay cable A to pass through the separation point between the main crossbeam 2 and secondary crossbeam 3 without obstructing the crossbeams, enabling the formwork to smoothly retract to both ends of the bridge for disassembly and avoiding damage to the bridge structure. Figures 15 to 17 The normal use of Highway D under the cable-stayed bridge is affected. The retreat operation can be completed without damaging the formwork structure, which reduces the labor intensity of workers, improves construction efficiency, and allows the formwork structure to be reused, greatly reducing construction costs.

[0088] Compared to the commonly used method of directly tying the fall protection net to the scaffolding on the outside of the bridge, by making the main truss protective structure easy to assemble and disassemble, it is possible to easily replace the net after it is damaged. This reduces the labor intensity of construction workers and improves construction efficiency. At the same time, since the main truss protective structure is directly installed on the main truss 1 and the hanging basket formwork, it can move with the secondary crossbeam 3 and the hanging basket formwork. Construction workers do not need to continuously build the fall protection net as the hanging basket structure moves forward, which further reduces the labor intensity of construction workers.

[0089] In a specific embodiment, such as Figure 8 and Figure 9 As shown, the secondary crossbeam traveling mechanism includes a track pad beam 4, a secondary rail 5, a wheel frame 6, a jacking device 7, a push rod 8, and a mechanical gripper 9;

[0090] The track pad beam 4 is set as follows: Figures 1 to 3 On the bridge deck C of the cable-stayed bridge shown, the secondary rail 5 is mounted on the track pad beam 4. A wheel axle is rotatably connected to the wheel frame 6, and a wheel 10 is mounted on the wheel axle. A jacking device 7 is mounted on the secondary rail 5, and the jacking device 7 can push the wheel frame 6 to make the wheel 10 slide along the secondary rail 5. One end of the push rod 8 is fixed to the top of the wheel frame 6, and the other end of the push rod 8 is fixedly connected to a mechanical gripper 9, which can clamp the secondary crossbeam 3. In this embodiment, as shown... Figure 8 As shown, after the mechanical gripper 9 clamps the secondary crossbeam 3, the end of the gripper can press against the top surface of the secondary crossbeam 3 to prevent the secondary crossbeam 3 from falling off the mechanical gripper 9.

[0091] In this embodiment, as Figure 2 As shown, the secondary rail 5 is parallel to the main rail 24 of the main truss traveling mechanism, ensuring that when retracting, the main truss 1 and the separated secondary beam 3 move in the same direction without interference.

[0092] In this embodiment, the push rod 8 is an electric push rod, such as... Figure 8 and Figure 9 As shown, a reinforcing rib 25 is welded to the top of the wheel frame 6. The reinforcing rib 25 abuts against the outer periphery of the push rod 8 to prevent the push rod 8 from tipping over.

[0093] In a specific embodiment, such as Figure 8 As shown, the secondary crossbeam traveling mechanism also includes a limiting push rod 11. The limiting push rod 11 is inclinedly arranged on the top of the wheel frame 6. After the piston rod of the limiting push rod 11 is extended, it can abut against the gripper of the mechanical gripper 9, preventing the mechanical gripper 9 from releasing the secondary crossbeam 3. The limiting push rod 11 effectively improves the reliability of the secondary crossbeam traveling mechanism.

[0094] In this embodiment, the limiting push rod 11 is an electric push rod. After the mechanical gripper 9 clamps the secondary crossbeam 3, the piston rod of the limiting push rod 11 extends to abut against the gripper 9, ensuring that the mechanical gripper 9 is stable and reliable in the clamped state, preventing the gripper from accidentally opening, thereby avoiding the secondary crossbeam 3 from falling off and causing a safety accident.

[0095] In a specific embodiment, such as Figure 5 As shown, it also includes a crossbeam limiting bolt 12. The end of the secondary crossbeam 3 is provided with multiple protrusions 301, and the end of the main crossbeam 2 is provided with multiple grooves 201 corresponding to the protrusions 301. Bolt holes are opened on both sides of the grooves 201 and on the protrusions 301. When the protrusions 301 are inserted into the grooves 201, the crossbeam limiting bolt 12 can pass through the bolt holes opened on both sides of the grooves 201 and on the protrusions 301, preventing the secondary crossbeam 3 and the main crossbeam 2 from separating, so that the secondary crossbeam 3 and the main crossbeam 2 are reliably connected.

[0096] In this embodiment, the beam limiting bolt 12 passes through the bolt holes on both sides of the groove 201 and the protrusion 301, and then engages with the nut.

[0097] In a specific embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the main truss protective structure also includes a transition net 15 and a secondary fall protection net 16, with the secondary fall protection net 16 located below the primary fall protection net 14, as shown. Figure 13 As shown, one end of the secondary fall protection net 16 is welded with a ring hook 17, and the secondary fall protection net 16 is hung on the steel structure of the hanging basket template through the ring hook 17. The other end of the secondary fall protection net 16 is welded with a transition net mounting block 18, and the transition net mounting block 18 is provided with a transition net groove 1801.

[0098] like Figure 12As shown, one end of the transition net 15 is welded with an eye hook 17. The transition net 15 is hung on the first-level anti-falling net 14 through the eye hook 17. The other end of the transition net 15 is welded with a transition net slide bar 1501 that can be inserted into the transition net chute 1801;

[0099] The construction worker inserts the transition net slide bar 1501 into the transition net chute 1801, hangs the eye hook 17 of the transition net 15 on the first-level anti-falling net 14, and hangs the eye hook 17 of the second-level anti-falling net 16 on the steel structure of the hanging basket formwork, then the installation of the transition net 15 and the second-level anti-falling net 16 can be realized;

[0100] During actual use, the mesh of the transition net 15 and the second-level anti-falling net 16 is smaller than that of the first-level anti-falling net 14, so as to provide multiple protections for construction workers, construction materials and construction tools during the construction of the hanging basket structure, ensure the safety of construction workers, and avoid the negative impact on the normal operation of the road D under the cable-stayed bridge caused by the accidental falling of various tools and construction materials during the construction process.

[0101] In a specific embodiment, as Figure 3 shown, it further includes a bottom walking passage 19. The bottom walking passage 19 is arranged at the bottom of the hanging basket formwork. The bottom walking passage 19 is a three-sided surrounding structure. The three-sided surrounding structure faces away from the side with an opening at the closure B of the cable-stayed bridge as shown in Figure 16 and Figure 17 shown. The bottom walking passage 19 provides convenience for construction workers to install suspension structures, disassemble and maintain formwork structures, etc.;

[0102] In actual application, the bottom walking passage 19 can be an independent component, directly welded and fixed on the hanging basket formwork; or a guardrail can be welded on the outer periphery of the steel structure extending from the bottom formwork 23 and the side formwork 22 to form the bottom walking passage 19.

[0103] In a specific embodiment, as Figure 3 and Figure 6 shown, it further includes a bottom walking passage protection net 20. As Figure 7 shown, the bottom walking passage protection net 20 includes a skeleton 2001 and a protection soft net 2002 tied to the skeleton 2001. The skeleton 2001 is hung on the bottom walking passage 19 through a steel wire rope with eye hooks 17 fixed at both ends, so as to facilitate the installation and replacement of the bottom walking passage protection net 20;

[0104] By setting the "C"-shaped bottom walking passage protection net 20 as shown in Figure 6 shown, it effectively prevents the falling of construction workers on the bottom walking passage 19 of the three-sided surrounding structure and the safety problems caused by the accidental dropping of construction tools or construction materials;

[0105] The frame 2001 is a welded steel frame. In actual use, the primary fall protection net 14, the transition net 15, and the secondary fall protection net 16 can all be composed of a steel frame and a protective soft net.

[0106] In a specific embodiment, such as Figure 1 and Figure 3 As shown, the suspension structure includes steel slings 21. One end of the steel sling 21 is fixed to the hanging basket template, and the other end of the steel sling 21 is fixed to the secondary crossbeam 3. In this embodiment, both ends of the steel sling 21 are provided with hooks. The steel sling 21 is hung on the steel structure of the secondary crossbeam 3 and the hanging basket template through the hooks. Multiple steel slings 21 are provided between the secondary crossbeam 3 and the hanging basket template to ensure that the hanging basket template can be stably connected to the secondary crossbeam 3 and move forward and backward together with the secondary crossbeam 3.

[0107] Example 2

[0108] This embodiment provides a construction method for a bridge hanging basket construction structure, including the bridge hanging basket construction structure described in Embodiment 1. The construction methods for moving the hanging basket structure forward and closing it are existing technologies. It is only necessary to ensure that the main crossbeam 2 and the secondary crossbeam 3 do not separate during the construction process of moving the hanging basket structure forward and closing it. It will not be described in detail here. The following describes the construction method for moving the hanging basket structure backward, including the following steps.

[0109] S1: After the cable-stayed bridge is closed, the secondary crossbeam traveling mechanism is moved to the underside of the secondary crossbeam 3. Specifically, the wheel frame 6 is pushed forward by the jacking device 7 so that the mechanical gripper 9 is located directly under the secondary crossbeam.

[0110] S2: The hoisting equipment lifts the secondary crossbeam 3, and the construction personnel disassemble the connection between the main crossbeam 2 and the secondary crossbeam 3, remove the crossbeam limit bolt 12 to complete the disassembly, and then the hoisting equipment moves the secondary crossbeam 3 laterally to separate the secondary crossbeam 3 from the main crossbeam 2.

[0111] S3: The push rod 8 of the secondary crossbeam traveling mechanism extends, driving the mechanical gripper 9, which is in the open state, to rise and abut against the bottom of the secondary crossbeam 3. Then the gripper 9 closes to clamp the secondary crossbeam 3. The main truss traveling mechanism drives the main truss 1 to retreat from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge. The secondary crossbeam traveling mechanism drives the secondary crossbeam 3, which is separated from the main crossbeam 2, to retreat from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge.

[0112] 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bridge hanging basket construction structure, characterized in that, include: Main truss (1), main truss traveling mechanism, secondary crossbeam traveling mechanism, hanging basket formwork and main truss protective structure; The main truss (1) includes a crossbeam, which includes a main crossbeam (2) and secondary crossbeams (3) disposed at both ends of the main crossbeam (2). The main crossbeam (2) and the secondary crossbeams (3) are detachably connected. The main truss traveling mechanism is located at the bottom of the main truss (1), and the main truss traveling mechanism can drive the main truss (1) to travel. The secondary crossbeam traveling mechanism is located below the secondary crossbeam (3). The secondary crossbeam traveling mechanism can support the secondary crossbeam (3) after it is separated from the main crossbeam (2) and drive the secondary crossbeam (3) after it is separated from the main crossbeam (2) to travel. After the main crossbeam (2) and the secondary crossbeam (3) are separated, the main crossbeam (2) can pass between the cable stays (A) on both sides of the cable-stayed bridge under the drive of the main truss traveling mechanism, and the secondary crossbeam (3) can pass outside the cable stays (A) on both sides of the cable-stayed bridge under the drive of the secondary crossbeam traveling mechanism. The hanging basket template is connected to the secondary crossbeam (3) via a suspension structure; The main truss protective structure includes a primary fall protection net installation block (13) and a primary fall protection net (14). The primary fall protection net installation block (13) can be hung on the secondary crossbeam (3) by a ring hook (17). The primary fall protection net installation block (13) is provided with a sliding groove (1301). One end of the primary fall protection net (14) is provided with a sliding rod (1401) that can be inserted into the sliding groove (1301), and the other end of the primary fall protection net (14) can be hung on the hanging basket template by a ring hook (17).

2. The bridge hanging basket construction structure according to claim 1, characterized in that, The secondary crossbeam traveling mechanism includes a track pad beam (4), a secondary rail (5), a wheel frame (6), a jacking device (7), a push rod (8), and a mechanical gripper (9); The track pad beam (4) is set on the cable-stayed bridge deck, the subrail (5) is set on the track pad beam (4), the wheel (10) is installed on the wheel frame (6), the jacking device (7) is installed on the subrail (5), the jacking device (7) can push the wheel frame (6) to make the wheel (10) slide along the subrail (5), one end of the push rod (8) is fixed to the top of the wheel frame (6), and the other end of the push rod (8) is fixedly connected to the mechanical gripper (9), the mechanical gripper (9) can clamp the sub-crossbeam (3).

3. The bridge hanging basket construction structure according to claim 2, characterized in that, The secondary crossbeam traveling mechanism also includes a limiting push rod (11), which is inclinedly arranged on the top of the wheel frame (6). After the piston rod of the limiting push rod (11) is extended, it can abut against the gripper of the mechanical gripper (9) to prevent the mechanical gripper (9) from releasing the secondary crossbeam (3).

4. The bridge hanging basket construction structure according to claim 1, characterized in that, It also includes a beam limiting bolt (12). The end of the secondary beam (3) is provided with multiple protrusions (301), and the end of the main beam (2) is provided with multiple grooves (201) corresponding to the protrusions (301). Bolt holes are provided on both sides of the grooves (201) and on the protrusions (301). When the protrusions (301) are inserted into the grooves (201), the beam limiting bolt (12) can penetrate through the bolt holes on both sides of the grooves (201) and on the protrusions (301), preventing the secondary beam (3) and the main beam (2) from separating.

5. A bridge hanging basket construction structure according to claim 1, characterized in that, The main truss protective structure also includes a transition net (15) and a secondary fall protection net (16), the secondary fall protection net (16) being located below the primary fall protection net (14); One end of the secondary fall protection net (16) can be hung on the hanging basket template by a ring hook (17), and the other end of the secondary fall protection net (16) is provided with a transition net mounting block (18), and the transition net mounting block (18) is provided with a transition net groove (1801); One end of the transition net (15) can be hung on the primary fall protection net (14) by a ring hook (17), and the other end of the transition net (15) is provided with a transition net slide bar (1501) that can be inserted into the transition net slide groove (1801).

6. A bridge hanging basket construction structure according to claim 1, characterized in that, It also includes a bottom walking channel (19), which is located at the bottom of the hanging basket template. The bottom walking channel (19) is a three-sided enclosed structure, and the three-sided enclosed structure opens towards the side away from the closure point of the cable-stayed bridge.

7. A bridge hanging basket construction structure according to claim 6, characterized in that, It also includes a bottom walking channel protective net (20), which includes a frame (2001) and a protective soft net (2002) tied to the frame (2001). The frame (2001) is hung on the bottom walking channel (19) by eyelet hooks (17).

8. A bridge hanging basket construction structure according to claim 1, characterized in that, The suspension structure includes a steel sling (21), one end of which is fixed to the hanging basket template, and the other end of which is fixed to the secondary crossbeam (3).

9. A construction method for a bridge hanging basket construction structure, comprising the bridge hanging basket construction structure as described in any one of claims 1 to 8, and further comprising the following steps; S1: After the cable-stayed bridge is closed, the secondary crossbeam traveling mechanism is moved to the underside of the secondary crossbeam (3); S2: The hoisting equipment lifts the secondary crossbeam (3), and the construction personnel disassemble the connection between the main crossbeam (2) and the secondary crossbeam (3). After the disassembly is completed, the hoisting equipment moves the secondary crossbeam (3) laterally, so that the secondary crossbeam (3) and the main crossbeam (2) are separated. S3: The secondary crossbeam traveling mechanism supports the secondary crossbeam (3), the main truss traveling mechanism drives the main truss (1) to move backward from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge, and the secondary crossbeam traveling mechanism drives the secondary crossbeam (3) separated from the main crossbeam (2) to move backward from the middle of the cable-stayed bridge to both ends of the cable-stayed bridge.

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