Maintenance operation platform for main arch ring of hanging type arch bridge

Abstract

The utility model relates to a mounting type arch bridge main arch ring maintenance operation platform which comprises a walking system, a suspension system, a platform system and a platform lifting system. The walking system is provided with walking trolleys on the top faces of the two sides of the main arch ring respectively and can walk along rails arranged on the main arch ring, the suspension system is suspended on the two walking trolleys through a cantilever beam, platforms on the two sides of the platform system are located on the two sides of the main arch ring respectively, a lower platform is located below the main arch ring, and a winch of the lifting system is arranged on the suspension system. And the side platform and the lower platform are connected through a traction rope. The main arch ring maintenance platform is directly hung on a main arch ring and walks along the main arch ring, bridge floor traffic can be prevented from being affected, and constructors can carry out all-directional maintenance operation on the main arch ring on the platform.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge maintenance and construction, and relates to a mounting type arch bridge main arch ring maintenance operation platform. Background Art

[0002] The main arch rings of concrete arch bridges are cast with reinforced concrete. As the bridge ages, cracks, carbonization, and surface corrosion develop in the main arch ring concrete, necessitating regular maintenance and repair. Conventional maintenance involves using a maintenance vehicle to suspend a hanging basket from a cantilever on the bridge. The basket is lowered to the outside of the bridge, where construction workers work. However, the basket's tendency to sway in mid-air poses significant construction risks, and workers are unable to maintain the underside of the arch ring. Furthermore, maintenance vehicles are bulky, and traveling across the bridge deck would disrupt the normal flow of vehicles on the bridge. Summary of the Invention

[0003] The purpose of the utility model is to solve the above problems and provide a mounted arch bridge main arch ring maintenance operation platform, which can carry out all-round maintenance of the main arch ring, ensure the safety of construction workers, and avoid affecting the traffic on the bridge.

[0004] The technical solution of the utility model is as follows:

[0005] A mounted arch bridge main arch ring maintenance operation platform, characterized by comprising 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 arranged at the top of both sides of the main arch along the longitudinal direction of the main arch, the tracks are zigzag-shaped, and the top surface of each track is provided with teeth at equal intervals along the longitudinal direction of the track, and the bottom of each track is welded to the embedded parts at the top of the main arch; each walking trolley includes a frame, a walking wheel is provided at the bottom of the frame, the walking wheel is a gear structure, a walking wheel driving motor is provided in the middle of the top of the frame, a driving wheel is provided on the transmission shaft of the walking wheel driving motor, and the driving wheel is connected to the rotating shaft of the walking wheel by a chain or a transmission belt, and the walking wheels of the two walking trolleys are respectively supported on the two tracks, the gears of the walking wheels are meshed with the teeth on the tracks and can move along the tracks;

[0007] The suspension system includes four cantilever beams and four suspenders; two of the four cantilever beams are welded in a transverse direction on the top of the frames of the two traveling trolleys, and 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 of the four suspenders are respectively provided on both sides of the main arch ring, and the upper ends of the two suspenders on each side of the main arch ring are respectively welded to the outer cantilevers of the two cantilever beams, and the lower ends of the four suspenders extend to a certain length below the main arch ring, an upper connecting beam is welded between the upper ends of the two suspenders on each side of the main arch ring, and a lower connecting beam is welded between the lower ends of every two suspenders opposite to each other in the transverse direction on both sides of the main arch ring;

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

[0009] The platform lifting system includes four winches, two of which are respectively set on the connecting beams of the two hangers on both sides of the main arch ring. There is a winch on each side of the main arch ring connected to the side platform below it through a traction rope, and the other two winches on both sides of the main arch ring are respectively connected to the two ends of the lower platform through traction ropes.

[0010] The utility model has the following advantages:

[0011] 1. Hang directly on the main arch ring and walk along the main arch ring to avoid affecting the traffic on the bridge deck;

[0012] 2. Equipped with side platforms and bottom platforms, construction workers can carry out all-round maintenance work on the main arch ring on the platforms;

[0013] 3. The structure is stable and safe, which can ensure the safety of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0016] Figure 3 yes Figure 1 The enlarged view of point A in the middle mainly shows the facade structure of the walking system and the anti-pull system;

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

[0018] Figure 5 It is a side view structural diagram of the anti-pull system;

[0019] Figure 6 This is the transverse elevation 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 transverse bridge elevation of the lower platform;

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

[0023] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the utility model 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 arranged at the top of both sides of the main arch ring along the longitudinal direction of the main arch ring 22, the track 1 is zigzag, and the top surface of each track is provided with teeth at equal intervals along the longitudinal direction of the track, and 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, a walking wheel 3 is provided at the bottom of the frame, the walking wheel 3 is a gear structure, a walking wheel driving motor 4 is provided in the middle of the top of the frame, a driving wheel is provided on the transmission shaft of the walking wheel driving motor 4, and the driving wheel is connected to the rotating shaft of the walking wheel by a chain 5 or a transmission belt, and the walking wheels 3 of the two walking trolleys are respectively supported on the two tracks 1, and the gears of the walking wheel 3 are engaged with the teeth on the track 1 and can walk along the track;

[0025] The suspension system includes four cantilever beams 6 and four suspenders 7; two of the four cantilever beams 6 are welded in a transverse bridge direction on the top of the frame 2 of the two walking trolleys, and there is a certain distance between the two cantilever beams 6 on each walking 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 a certain length to the inside of the main arch ring to form an inner cantilever; two of the four suspenders 7 are respectively provided on both sides of the main arch ring, and the upper ends of the two suspenders 7 on each side of the main arch ring are respectively welded to the outer cantilevers of the two cantilever beams 6, and the lower ends of the four suspenders 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 suspenders 7 on each side of the main arch ring, and a lower connecting beam 9 is welded between the lower ends of every two suspenders 7 opposite in the transverse bridge direction on both sides of the main arch ring;

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

[0027] The platform lifting system includes four winches 12, two of which are respectively set on the upper connecting beams 8 of the two hangers on both sides of the main arch ring. There is a winch 12 on each side of the main arch ring connected to the side platform 10 below it through a traction rope 13, and 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 respectively.

[0028] In the above structure, the hoist 12 raises and lowers the side platform 10 and lower platform 11 by retracting and releasing the traction rope 13. Construction workers can perform comprehensive maintenance on both sides and the bottom of the main arch from these platforms. The running wheel drive motor 4 drives the running wheels 3 along the track 1, carrying the platform longitudinally along the main arch. After completing maintenance work at one location, the platform moves to the next. The top surface of the main arch is arched, and the present invention incorporates a gear mechanism between the track 1 and the running wheels 3 to prevent the running wheels from sliding downhill when the running wheel drive motor is turned off.

[0029] In order to prevent the platform from being overloaded and causing the suspension system to tilt or the travel wheels to derail, the utility model is also equipped with a reverse pull system during its implementation. Figure 5 and Figure 3 、 Figure 1 As shown in the figure, the back-pull system includes two back-pull rails 14, two reaction beams 15 and two back-pull rods 16. The two back-pull rails 14 are respectively arranged at the top of both sides of the main arch ring 22 and below the inner cantilever end of the cantilever beam 6 along the longitudinal direction of the main arch ring. The bottom of each back-pull rail 14 is welded to the embedded part 21 at the top of the main arch ring. A C-shaped slide groove 141 is provided at the top of each back-pull rail along the longitudinal direction. 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 back-pull rods 16 are respectively welded to the middle of the two reaction beams 15. The lower ends of the two back-pull rods 16 are respectively provided with back-pressure rollers 17. The back-pressure rollers 17 at the lower ends of the two reaction rods are respectively stuck in the slide grooves 141 of the two back-pull rails 14 and can slide along the slide grooves.

[0030] In the above structure, since the counter-pressure roller 17 of the counter-pull system is confined in the slide groove 141 of the counter-pull slide rail, it provides a downward counter-pull force on 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 balanced and avoiding tilting due to unbalanced loading.

[0031] During the specific implementation of the present invention, in order to strengthen the connection strength between the two suspension rods on each side of the main arch ring, scissor struts 18 are respectively welded between the upper ends and the lower ends of the two suspension rods 7 on each side of the main arch ring.

[0032] like Figure 6 、 Figure 7As shown, each side platform 10 includes two side platform upper beams 101 and two side platform lower beams 102. The cross beams 101 on both side platforms and the side platform lower beams 102 are arranged between the two hangers 7 in the bridge direction. Support rods 103 are welded at both ends of the cross beam 101 on each side platform and the two ends of the side platform lower beam 102 respectively. Two side platform limiting rods 104 are welded at the bottom of the cross beams on both side platforms and the bottom of the side platform lower beams on both sides of the two hangers along the bridge direction. The length of the side platform limiting rods 104 is greater than the spacing between the two hangers 7. Multiple side platform distribution beams 105 are welded between the cross beams 101 on the two side platforms. Side platform distribution beams are laid on the side platform distribution beams, and side platform guardrails 107 are welded around the side platform panels.

[0033] In the above structure, the two suspension rods 7 can limit the side platform 10 from shaking or tilting along the bridge direction, and the limit rod 104 can limit the side platform 10 from shaking or tilting across the bridge, so that the side platform can keep balance in the air. When the side platform is raised and lowered, the suspension rod plays a guiding role.

[0034] like Figure 6 As shown in , when the present invention is specifically implemented, the length of the upper crossbeam 101 of the side platform can be set to be greater than the length of the lower crossbeam 102 of the side platform. This can not only expand the area of ​​the side platform, but also reduce the volume and weight of the side platform.

[0035] In order to further enhance the structural strength of the side platform, diagonal braces 108 may be welded between the two support bars at each end of the upper crossbeam of 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 of the bridge, and two of the four lower platform load-bearing beams 111 are respectively arranged on both sides of the hangers 7 opposite to each other in the transverse direction. The two ends of the four lower platform load-bearing beams 111 are respectively welded with lower platform limit rods 112 on both sides of the two hangers 7 on each side of the main arch ring. A plurality of lower platform distribution beams 113 are constructed between the top surfaces of the four lower platform load-bearing beams 111, and a lower platform panel 114 is laid on the lower platform distribution beams 113, and a lower platform guardrail 115 is welded around the lower platform panel 114.

[0037] When the utility model is implemented, the connection and traction method between the winch and the side platform and the lower platform of the platform lifting system can be adopted in the following ways: Figure 2 、 Figure 4 As shown in FIG, an anchor beam 19 is welded along the bridge direction on the two suspender connecting beams 8 on both sides of the main arch ring, close to the inner side of one suspender 7, and a winch 12 is set on the connecting beam, close to the inner side of the other suspender; Figure 1 、 Figure 2 and Figures 6 to 9As shown in the figure, a side platform joist 109 is welded along the bridge direction between the middle bottom surfaces of the two side platform lower cross beams 102 of each side platform 10, and a steering wheel 20 is provided at both ends of the side platform joist 109. The traction rope 13 of the winch connecting the side platform passes around the steering wheels 20 at both ends of the side platform joist and is connected to the upper anchor beam 19; the bottom surfaces of both ends of the lower platform 11 are respectively welded along the bridge direction to the lower surfaces, and a steering wheel 20 is provided at both ends of each lower platform joist 116. The traction rope 13 of the two winches connecting the lower platform passes around the steering wheels 20 at both ends of the two lower platform joists 116 and is connected to the upper anchor beam 19.

Claims

1. A mounted arch bridge main arch ring maintenance operation platform, characterized by: Including walking system, suspension system, platform system and platform lifting system; The walking system includes two tracks and two walking trolleys; the two tracks are respectively arranged at the top of both sides of the main arch along the longitudinal direction of the main arch, the tracks are zigzag-shaped, and the top surface of each track is provided with teeth at equal intervals along the longitudinal direction of the track, and the bottom of each track is welded to the embedded parts at the top of the main arch; each walking trolley includes a frame, a walking wheel is provided at the bottom of the frame, the walking wheel is a gear structure, a walking wheel driving motor is provided in the middle of the top of the frame, a driving wheel is provided on the transmission shaft of the walking wheel driving motor, and the driving wheel is connected to the rotating shaft of the walking wheel by a chain or a transmission belt, and the walking wheels of the two walking trolleys are respectively supported on the two tracks, the gears of the walking wheels are meshed with the teeth on the tracks and can move along the tracks; The suspension system includes four cantilever beams and four suspenders; two of the four cantilever beams are welded in a transverse direction on the top of the frames of the two traveling trolleys, and 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 of the four suspenders are respectively provided on both sides of the main arch ring, and the upper ends of the two suspenders on each side of the main arch ring are respectively welded to the outer cantilevers of the two cantilever beams, and the lower ends of the four suspenders extend to a certain length below the main arch ring, an upper connecting beam is welded between the upper ends of the two suspenders on each side of the main arch ring, and a lower connecting beam is welded between the lower ends of every two suspenders opposite to each other in the transverse direction on both sides of the main arch ring; The platform system includes two side platforms and a lower platform. The side platforms are located on both sides of the main arch ring, and each side platform is located between two suspension rods. The lower platform is located between four suspension rods below the main arch ring. The platform lifting system includes four winches, two of which are respectively set on the connecting beams of the two hangers on both sides of the main arch ring. There is a winch on each side of the main arch ring connected to the side platform below it through a traction rope, and the other two winches on both sides of the main arch ring are respectively connected to the two ends of the lower platform through traction ropes.

2. The mounted arch bridge main arch ring maintenance operation platform according to claim 1 is characterized by: The cam is provided with a plurality of counter-pull rods, and the plurality of counter-pull rods are connected to the cam by a plurality of counter-pull rods, and the plurality of counter-pull rods are connected to the cam by a plurality of counter-pull rods.

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

4. The mounted arch bridge main arch ring maintenance operation platform according to claim 1 or 2, characterized in that: Each side platform includes two upper cross beams on the side platforms and two lower cross beams on the side platforms. The cross beams on the two side platforms and the lower cross beams on the side platforms are arranged transversely between two hangers. Support rods are welded at both ends of the cross beam on each side platform and at both ends of the lower cross beam on one side platform. Two side platform limiting rods are welded on both sides of the two hangers along the bridge direction at the bottom of the cross beams on the two side platforms and the bottom of the lower cross beams on the two side platforms respectively. The length of the side platform limiting rods is greater than the spacing between the two hangers. Multiple side platform distribution beams are welded between the cross beams on the two side platforms. Side platform distribution beams are laid on the side platform distribution beams, and side platform guardrails are welded around the side platform panels.

5. The mounted arch bridge main arch ring maintenance operation platform according to claim 4 is characterized in that: The length of the upper crossbeam of the side platform is greater than the length of the lower crossbeam of the side platform.

6. The mounted arch bridge main arch ring maintenance operation platform according to claim 4 is characterized by: A diagonal bracing rod is welded between two supporting rods at each end of the upper crossbeam of the side platform and the lower crossbeam of the side platform.

7. The mounted arch bridge main arch ring maintenance operation platform according to claim 1 or 2, characterized in that: The lower platform includes four lower platform load-bearing beams arranged in the transverse direction of the bridge, two of the four lower platform load-bearing beams are respectively arranged on both sides of the hangers opposite to each other in the transverse direction, and lower platform limit rods are welded on both sides of the two hangers on each side of the main arch ring at both ends of the four lower platform load-bearing beams. Multiple lower platform distribution beams are set 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.

8. The mounted arch bridge main arch ring maintenance operation platform according to claim 1 or 2, characterized in that: An anchor beam is welded on the two hanger connecting beams on both sides of the main arch ring along the bridge direction; a side platform supporting beam is welded between the middle bottom surfaces of the lower cross beams on both sides of each side platform along the bridge direction, and steering wheels are respectively provided at both ends of the side platform supporting beam. The traction rope of the winch connecting the side platform passes around the steering wheels at both ends of the side platform supporting beam and is connected to the anchor beam above; a lower platform supporting beam is welded on the bottom surfaces at both ends of the lower platform along the bridge direction, and steering wheels are respectively provided at both ends of each lower platform supporting beam. The traction ropes of the two winches connecting the lower platform pass around the steering wheels at both ends of the two lower platform supporting beams and are connected to the anchor beam above.

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