A mounted arch bridge main arch ring maintenance operation platform

Abstract

This invention relates to a suspended arch bridge main arch ring maintenance work platform, comprising a traveling system, a suspension system, a platform system, and a platform lifting system. The traveling system has a trolley mounted on each side of the main arch ring's top surface, capable of moving along tracks set on the main arch ring. The suspension system is suspended from the two trolleys by cantilever beams. The platform system has two side platforms located on either side of the main arch ring, with the lower platform located below the main arch ring. The lifting system's winch is mounted on the suspension system and connects the side platforms and the lower platform via traction ropes. This invention directly suspends itself on and moves along the main arch ring, avoiding disruption to bridge traffic. Construction personnel can perform comprehensive maintenance work on the main arch ring from the platform.

Description

Technical Field

[0001] This invention belongs to the field of bridge maintenance and construction technology, and relates to a mounting-type arch bridge main arch ring maintenance operation platform. Background Technology

[0002] The main arch of the concrete arch bridge is constructed of reinforced concrete. As the bridge ages, the concrete in the main arch will develop defects such as cracks, carbonation, and surface corrosion, requiring regular maintenance and repair. The conventional maintenance method involves using a maintenance vehicle to lower a suspended platform onto the outside of the bridge, where workers perform the work. However, the suspended platform is prone to swaying in the air, posing significant construction risks, and workers cannot directly maintain the bottom surface of the arch. Furthermore, the large size of the maintenance vehicle obstructs traffic on the bridge. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a mounted arch bridge main arch ring maintenance platform, which can perform all-round maintenance on the main arch ring, ensure the safety of construction personnel, and avoid affecting traffic on the bridge.

[0004] The technical solution of the present invention is as follows:

[0005] A mounting-type arch bridge main arch ring maintenance operation platform, characterized in that it includes a walking system, a suspension system, a platform system, and a platform lifting system;

[0006] The walking system includes two tracks and two walking trolleys. The two tracks are respectively set on the top of the main arch ring on both sides of the main arch ring. The tracks are sawtooth-shaped, and each track has teeth evenly spaced along the longitudinal direction on its top surface. The bottom of each track is welded to the embedded parts at the top of the main arch ring. Each walking trolley includes a frame, and a walking wheel is set at the bottom of the frame. The walking wheel has a gear structure. A walking wheel drive motor is set in the middle of the top of the frame. A drive wheel is set on the transmission shaft of the walking wheel drive motor. The drive wheel is connected to the shaft of the walking wheel by a chain or transmission belt. The walking wheels of the two walking trolleys are supported on the two tracks respectively. The gears of the walking wheels mesh with the teeth on the tracks and can move along the tracks.

[0007] The suspension system includes four cantilever beams and four hangers. Two cantilever beams are welded transversely to the top of the frames of the two traveling trolleys. There is a certain distance between the two cantilever beams on each traveling trolley. One end of each cantilever beam extends to a certain length outside the main arch ring to form an outer cantilever, and the other end extends to a certain length inside the main arch ring to form an inner cantilever. Two hangers are installed on each side of the main arch ring. The upper ends of the two hangers on each side of the main arch ring are welded to the outer cantilever of the two cantilever beams. The lower ends of the four hangers extend to a certain length below the main arch ring. An upper connecting beam is welded between the upper ends of the two hangers on each side of the main arch ring. A lower connecting beam is welded between the lower ends of every two transversely opposite hangers on each side of the main arch ring.

[0008] The platform system includes two side platforms and one lower platform. The two side platforms are located on both sides of the main arch ring, and each side platform is located between two hangers. The lower platform is located between four hangers below the main arch ring.

[0009] The platform lifting system includes four winches. Two winches are installed on the connecting beams on the two slings on both sides of the main arch ring. One winch on each side of the main arch ring is connected to the side platform below it via a traction rope. The other two winches on both sides of the main arch ring are connected to the two ends of the lower platform via traction ropes.

[0010] The present invention has the following advantages:

[0011] 1. It can be directly suspended on the main arch and travel along the main arch, which can avoid affecting the traffic on the bridge surface;

[0012] 2. It is equipped with side platforms and bottom platforms, allowing construction workers to carry out all-round maintenance work on the main arch ring from the platforms;

[0013] 3. The structure is stable and safe, ensuring the safety of construction personnel. Attached Figure Description

[0014] Figure 1 This is a transverse elevation view of the present invention;

[0015] Figure 2 This is a side view of the invention along the bridge direction;

[0016] Figure 3 yes Figure 1 The enlarged view at point A mainly shows the elevation structure of the walking system and the anti-tension system;

[0017] Figure 4 yes Figure 2 The enlarged view at point B mainly shows the side view structure of the walking system;

[0018] Figure 5 This is a side view of the anti-pull system.

[0019] Figure 6 This is the transverse elevation view of the side platform;

[0020] Figure 7 This is a side view of the side platform along the bridge direction;

[0021] Figure 8 This is the horizontal elevation view of the lower platform bridge;

[0022] Figure 9 This is a side view of the lower platform along the bridge. Detailed Implementation

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention includes a walking system, a suspension system, a platform system, and a platform lifting system;

[0024] The walking system includes two tracks 1 and two walking trolleys; the two tracks 1 are respectively set longitudinally on the top of the main arch ring 22 on both sides of the main arch ring 22. The tracks 1 are sawtooth-shaped, and each track has teeth evenly spaced along the longitudinal direction on its top surface. The bottom of each track 1 is welded to the embedded part 21 at the top of the main arch ring 22. Each walking trolley includes a frame 2, and a walking wheel 3 is set at the bottom of the frame. The walking wheel 3 has a gear structure. A walking wheel drive motor 4 is set in the middle of the top of the frame. A drive wheel is set on the transmission shaft of the walking wheel drive motor 4. The drive wheel is connected to the shaft of the walking wheel by a chain 5 or a transmission belt. The walking wheels 3 of the two walking trolleys are respectively supported on the two tracks 1. The gears of the walking wheels 3 mesh with the teeth on the tracks 1 and can move along the tracks.

[0025] The suspension system includes four cantilever beams 6 and four hangers 7. Two cantilever beams 6 are welded transversely to the top of the frame 2 of each of the two traveling trolleys. There is a certain distance between the two cantilever beams 6 on each traveling trolley. One end of each cantilever beam 6 extends to a certain length outside the main arch ring 22 to form an outer cantilever, and the other end extends to a certain length inside the main arch ring to form an inner cantilever. Two hangers 7 are set on each side of the main arch ring. The upper ends of the two hangers 7 on each side of the main arch ring are welded to the outer cantilever of the two cantilever beams 6. The lower ends of the four hangers 7 extend to a certain length below the main arch ring 22. An upper connecting beam 8 is welded between the upper ends of the two hangers 7 on each side of the main arch ring. A lower connecting beam 9 is welded between the lower ends of every two transversely opposite hangers 7 on each side of the main arch ring.

[0026] The platform system includes two side platforms 10 and a lower platform 11. The two side platforms 10 are located on both sides of the main arch ring 22, and each side platform 10 is located between two hangers 7. The lower platform 11 is located between four hangers below the main arch ring 22.

[0027] The platform lifting system includes four winches 12. Two winches 12 are installed on the upper connecting beams 8 of the two rods on both sides of the main arch ring. One winch 12 on each side of the main arch ring is connected to the side platform 10 below it through a traction rope 13. The other two winches 12 on both sides of the main arch ring are connected to the two ends of the lower platform 11 through traction ropes 13.

[0028] In the above structure, the winch 12 raises and lowers the side platform 10 and the lower platform 11 by winding and unwinding the traction rope 13. Construction personnel can perform all-round maintenance on both sides and the bottom of the main arch ring from the platform. The traveling wheel drive motor 4 drives the traveling wheels 3 to move along the track 1, carrying the platform longitudinally along the main arch ring. After the maintenance work in one location is completed, it moves to the next construction location. The top surface of the main arch ring is arched. In this invention, the track 1 and the traveling wheels 3 are set with a gear engagement to prevent the traveling wheels from slipping when the traveling wheel drive motor is turned off.

[0029] To prevent platform imbalance from causing the suspension system to tilt or the wheels to derail, this invention also includes a counter-pull system in its implementation. For example... Figure 5 and Figure 3 , Figure 1 As shown, the anti-pull system includes two anti-pull slide rails 14, two reaction beams 15, and two anti-pull rods 16. The two anti-pull slide rails 14 are respectively arranged longitudinally along the top of both sides of the main arch ring 22 and below the inner cantilever end of the cantilever beam 6. The bottom of each anti-pull slide rail 14 is welded to the embedded part 21 at the top of the main arch ring. A C-shaped groove 141 is provided longitudinally at the top of each anti-pull slide rail. The two reaction beams 15 are respectively welded between the inner cantilever ends of the two cantilever beams 6 on each side of the main arch ring. The upper ends of the two anti-pull rods 16 are respectively welded to the middle of the two reaction beams 15. The lower ends of the two anti-pull rods 16 are respectively provided with anti-pressure rollers 17. The anti-pressure rollers 17 at the lower ends of the two anti-pull rods are respectively stuck in the grooves 141 of the two anti-pull slide rails 14 and can slide along the grooves.

[0030] In the above structure, since the anti-pressure roller 17 of the anti-pull system is confined within the groove 141 of the anti-pull slide rail, it provides a downward anti-pull force to the short cantilever end of the cantilever beam 6, which can resist the load force borne by the long cantilever end of the cantilever beam, thereby keeping the suspension system in balance and avoiding tilting caused by eccentric loading.

[0031] In a specific implementation of the present invention, in order to strengthen the connection between the two hangers on each side of the main arch ring, scissor braces 18 are welded between the upper and lower ends of the two hangers 7 on each side of the main arch ring.

[0032] like Figure 6 , Figure 7As shown, each side platform 10 includes two upper side beams 101 and two lower side beams 102. The upper side beams 101 and lower side beams 102 are arranged in the bridge direction between two hangers 7. Each upper side beam 101 has a support rod 103 welded to both ends of the lower side beam 102. The bottom of the upper side beams and the bottom of the lower side beams are each welded to two side platform limiting rods 104 in the bridge direction on both sides of the hangers. The length of the side platform limiting rods 104 is greater than the distance between the two hangers 7. Multiple side platform distribution beams 105 are welded between the upper side beams 101. Side platform panels 106 are laid on the side platform distribution beams. Side platform guardrails 107 are welded around the side platform panels.

[0033] In the above structure, the two booms 7 can limit the side platform 10 from swaying or tilting in the longitudinal direction of the bridge, and the limiting rod 104 can limit the side platform 10 from swaying or tilting in the transverse direction of the bridge, so that the side platform can maintain balance in the air. When the side platform is raised and lowered, the booms play a guiding role.

[0034] like Figure 6 As shown, in a specific implementation of the present invention, the length of the crossbeam 101 on the side platform can be set to be greater than the length of the crossbeam 102 on the lower side platform. This can both increase the area of ​​the side platform and reduce its volume and weight.

[0035] To further enhance the structural strength of the side platform, diagonal bracing rods 108 can be welded between the two support rods at each end of the crossbeam on the side platform and the lower crossbeam of the side platform.

[0036] like Figure 8 , Figure 9 As shown, the lower platform 11 includes four lower platform load-bearing beams 111 arranged in the transverse direction. Two lower platform load-bearing beams 111 are respectively set on both sides of each pair of opposite hangers 7 in the transverse direction. Lower platform limiting rods 112 are welded to both sides of the two hangers 7 on each side of the main arch ring at both ends of the four lower platform load-bearing beams 111. Multiple lower platform distribution beams 113 are erected between the top surfaces of the four lower platform load-bearing beams 111. Lower platform panels 114 are laid on the lower platform distribution beams 113. Lower platform guardrails 115 are welded around the lower platform panels 114.

[0037] In specific implementations of this invention, the connection and traction methods between the winch of the platform lifting system and the side platform and lower platform can be as follows: (e.g.) Figure 2 , Figure 4 As shown, on the two connecting beams 8 on both sides of the main arch ring, an anchor beam 19 is welded along the bridge direction near the inner side of one of the connecting beams 7. The winch 12 is installed on the connecting beam near the inner side of the other connecting beam; as shown Figure 1 , Figure 2 and Figures 6 to 9As shown, a side platform support beam 109 is welded longitudinally between the bottom surfaces of the lower crossbeams 102 on both sides of each side platform 10. Each side platform support beam 109 has a steering wheel 20 at both ends. The traction rope 13 of the winch connecting the side platform passes over the steering wheels 20 at both ends of the side platform support beam and connects to the upper anchor beam 19. A lower platform support beam 116 is welded longitudinally to the bottom surfaces of both ends of the lower platform 11. Each lower platform support beam 116 has a steering wheel 20 at both ends. The traction rope 13 of the two winches connecting the lower platform passes over the steering wheels 20 at both ends of the two lower platform support beams 116 and connects to the upper anchor beam 19.

Claims

1. A mounting-type arch bridge main arch ring maintenance operation platform, characterized in that: This includes the walking system, suspension system, platform system, platform lifting system, and anti-pull system; The walking system includes two tracks and two walking trolleys. The two tracks are respectively set on the top of the main arch ring on both sides of the main arch ring. The tracks are sawtooth-shaped, and each track has teeth evenly spaced along the longitudinal direction on its top surface. The bottom of each track is welded to the embedded parts at the top of the main arch ring. Each walking trolley includes a frame, and a walking wheel is set at the bottom of the frame. The walking wheel has a gear structure. A walking wheel drive motor is set in the middle of the top of the frame. A drive wheel is set on the transmission shaft of the walking wheel drive motor. The drive wheel is connected to the shaft of the walking wheel by a chain or transmission belt. The walking wheels of the two walking trolleys are supported on the two tracks respectively. The gears of the walking wheels mesh with the teeth on the tracks and can move along the tracks. The suspension system includes four cantilever beams and four hangers. Two cantilever beams are welded transversely to the top of the frames of the two traveling trolleys. There is a certain distance between the two cantilever beams on each traveling trolley. One end of each cantilever beam extends to a certain length outside the main arch ring to form an outer cantilever, and the other end extends to a certain length inside the main arch ring to form an inner cantilever. Two hangers are installed on each side of the main arch ring. The upper ends of the two hangers on each side of the main arch ring are welded to the outer cantilever of the two cantilever beams. The lower ends of the four hangers extend to a certain length below the main arch ring. An upper connecting beam is welded between the upper ends of the two hangers on each side of the main arch ring. A lower connecting beam is welded between the lower ends of every two transversely opposite hangers on each side of the main arch ring. The platform system includes two side platforms and one lower platform. The two side platforms are located on both sides of the main arch ring, and each side platform is located between two hangers. The lower platform is located between four hangers below the main arch ring. The platform lifting system includes four winches. Two winches are installed on the connecting beams on the two rods on both sides of the main arch ring. One winch on each side of the main arch ring is connected to the side platform below it via a traction rope. The other two winches on both sides of the main arch ring are connected to the two ends of the lower platform via traction ropes. The anti-pull system includes two anti-pull slide rails, two reaction beams, and two anti-pull rods. The two anti-pull slide rails are respectively set along the longitudinal direction of the main arch ring at the top of both sides of the main arch ring and below the inner cantilever end of the cantilever beam. The bottom of each anti-pull slide rail is welded to the embedded part at the top of the main arch ring. A C-shaped groove is set at the top of each anti-pull slide rail along the longitudinal direction. The two reaction beams are respectively welded between the inner cantilever ends of the two cantilever beams on each side of the main arch ring. The upper ends of the two anti-pull rods are respectively welded to the middle of the two reaction beams. The lower ends of the two anti-pull rods are respectively provided with anti-pressure rollers. The anti-pressure rollers at the lower ends of the two reaction rods are respectively locked in the grooves of the two anti-pull slide rails and can slide along the grooves.

2. The mounting-type arch bridge main arch ring maintenance platform according to claim 1, characterized in that: Scissor braces are welded between the upper and lower ends of the two hangers on each side of the main arch.

3. The mounting-type arch bridge main arch ring maintenance platform according to claim 1, characterized in that: Each side platform includes two upper side beams and two lower side beams. The upper and lower side beams are arranged transversely between two hangers. Each upper side beam has a support rod welded to both ends of the lower side beam. At the bottom of the upper and lower side beams, two side platform limiting rods are welded to both sides of the hangers in the longitudinal direction. The length of the limiting rods is greater than the distance between the two hangers. Multiple side platform distribution beams are welded between the upper and lower side beams. Side platform panels are laid on the side platform distribution beams, and side platform guardrails are welded around the side platform panels.

4. The mounting-type arch bridge main arch ring maintenance platform according to claim 3, characterized in that: The length of the crossbeam on the side platform is greater than the length of the crossbeam below the side platform.

5. The mounting-type arch bridge main arch ring maintenance platform according to claim 3, characterized in that: Diagonal bracing rods are welded between the two support rods at each end of the crossbeam on the side platform and the lower crossbeam of the side platform.

6. The mounting-type arch bridge main arch ring maintenance platform according to claim 1, characterized in that: The lower platform includes four transverse lower platform load-bearing beams. Two lower platform load-bearing beams are installed on each side of every two transversely opposite hangers. Lower platform limiting rods are welded to both ends of the four lower platform load-bearing beams on both sides of the two hangers on each side of the main arch ring. Multiple lower platform distribution beams are erected between the top surfaces of the four lower platform load-bearing beams. Lower platform panels are laid on the lower platform distribution beams, and lower platform guardrails are welded around the lower platform panels.

7. The mounting-type arch bridge main arch ring maintenance platform according to claim 1, characterized in that: An anchor beam is welded along the bridge direction to each of the two connecting beams on both sides of the main arch ring; a side platform support beam is welded along the bridge direction between the bottom surfaces of the crossbeams on both sides of each side platform, and a steering wheel is provided at both ends of the side platform support beam. The traction rope of the winch connecting the side platform passes around the steering wheels at both ends of the side platform support beam and is connected to the anchor beam above; a lower platform support beam is welded along the bridge direction to the bottom surfaces of both ends of the lower platform, and a steering wheel is provided at both ends of each lower platform support beam. The traction rope of the two winches connecting the lower platform passes around the steering wheels at both ends of the two lower platform support beams and is connected to the anchor beam above.

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