Bridge maintenance platform and maintenance method

Abstract

The application discloses a bridge maintenance platform and a maintenance method, wherein the bridge maintenance platform comprises a longitudinal support beam and a walking mechanism slidingly installed on the longitudinal support beam; the longitudinal support beam is horizontally arranged and fixedly connected with a bridge; a manned lifting mechanism is hung below the walking mechanism; and the walking mechanism drives the manned lifting mechanism to move horizontally along the longitudinal support beam. The bridge maintenance platform can be fixed on the bridge, does not affect the traffic on the bridge and the navigation under the bridge, can be fixed on the bridge for a long time, can be used for the bridge inspection and maintenance at any time, and the staff can stand on the bridge maintenance platform to control the movement of the bridge maintenance platform to conduct the dead angle-free inspection and maintenance on each part of the bridge without the need of erecting a scaffold, thereby saving time and effort. The bridge maintenance platform is not affected by the traffic on the bridge and the topography and geomorphology under the bridge, and is suitable for the maintenance of various bridges.

Description

Technical Field

[0001] This invention relates to the field of bridge maintenance, and in particular to a bridge inspection platform and inspection method. Background Technology

[0002] After a bridge is completed and put into use, its technical condition gradually deteriorates with the increase of its service life. Therefore, in order to ensure the safety of bridge traffic, regular inspection and maintenance of bridges are imperative.

[0003] Currently, bridge inspection and maintenance are generally carried out using bridge inspection vehicles. The vehicle is parked on the bridge, and workers move to various parts of the bridge for inspection and maintenance by extending the inspection arm. The problem with this method is that it can easily affect traffic on the bridge, and the extension length of the inspection arm is limited, making it difficult to conduct inspection and maintenance of all parts of the bridge without blind spots.

[0004] Due to the limitations of the specific structure of the bridge, when bridge inspection vehicles cannot conduct thorough inspections and repairs of all parts of the bridge, or when the inspection determines that the bridge requires a long period of repair, the industry practice is to erect scaffolding under the bridge as a working platform for inspection and repair work in order to avoid the bridge inspection vehicles staying on the bridge for a long time and affecting traffic. Obviously, erecting scaffolding is costly, time-consuming and labor-intensive, and sometimes difficulties in erecting scaffolding can occur due to the terrain under the bridge, which affects the inspection and maintenance of the bridge. Summary of the Invention

[0005] The main objective of this invention is to propose a bridge maintenance platform and maintenance method, which aims to solve the problems existing in current bridge maintenance mentioned in the background art.

[0006] To address the aforementioned problems, this invention proposes a bridge maintenance platform, comprising a longitudinal support beam and a traveling mechanism slidably mounted on the longitudinal support beam. The longitudinal support beam is horizontally positioned and fixedly connected to the bridge. A personnel lifting mechanism is suspended below the traveling mechanism, which drives the personnel lifting mechanism to move horizontally along the longitudinal support beam.

[0007] In one embodiment, the walking mechanism includes:

[0008] A pair of vertically spaced parallel mounting plates are fixedly connected by a connecting rod.

[0009] A roller assembly is symmetrically disposed on two mounting plates. The roller assembly is rotatably connected to the longitudinal support beam, and the mounting plates are suspended on the longitudinal support beam via the roller assembly.

[0010] Motor 1 is fixed on mounting plate 1 and connected to roller assembly 1 for driving roller assembly 1 to roll along longitudinal support beam;

[0011] The connecting cylinder has one end fixedly connected to the mounting plate and the other end fixedly connected to the mounting ring. The central axis of the mounting ring is vertical, and the connecting cylinder is equipped with a motor.

[0012] In one embodiment, the passenger lifting mechanism includes:

[0013] The guide rail is set vertically, and its upper end is rotatably connected to the first mounting ring and connected to the third motor drive. The third motor drives the guide rail to rotate around the central axis of the first mounting ring.

[0014] The hanging basket is located at the lower end of the guide rail and is vertically slidably / rollingly connected to the guide rail;

[0015] The telescopic device has a hanging basket and a guide rail hinged at both ends, which is used to drive the hanging basket to rise and fall vertically along the guide rail.

[0016] In one embodiment, there is a pair of longitudinal support beams, which are parallel to each other and spaced apart, and the hanging baskets under the two longitudinal support beams are detachably connected.

[0017] A pair of longitudinal support beams are installed on both sides of the bridge wall in the direction of water flow.

[0018] In one embodiment, both ends of the longitudinal support beam are fixedly connected to a vertical support beam, the two vertical support beams are parallel to each other and fixedly connected to the bridge;

[0019] The lower end of the vertical support beam is fixed with a buried pile, which is inserted into the ground.

[0020] In one embodiment, racks and grooves are vertically provided on both vertical support beams. A slide plate is vertically slidably installed in the groove. A second motor connected to the rack is fixed on the slide plate, and the slide plate is driven to move up and down along the groove by the second motor.

[0021] The slide plate is fixedly equipped with a tensioning device and a braking device, which are connected by a rotating shaft.

[0022] In one embodiment, the tensioning device includes:

[0023] The box body is fixedly connected to the skateboard. One end of the rotating shaft extends into the box body. The box body is provided with a strap outlet hole. A box cover is detachably and fixedly installed on the side of the box body away from the skateboard.

[0024] Mounting plate four is located inside the box and is coaxially fixedly connected to the rotating shaft. A winding cylinder is coaxially fixed on mounting plate four and is located inside the box.

[0025] The tape is located inside the box and is wound on the winding drum. One end of the tape is unwound, passes through the tape hole, extends out of the box and is connected to the hanging basket. The unwound tape drives the winding drum, the mounting plate, and the rotating shaft to rotate forward.

[0026] The spring is located inside the winding drum and wound on the shaft. One end of the spring is fixedly connected to the shaft, and the other end is fixedly connected to the cover via a mounting rod. The shaft rotates clockwise to tighten the spring. The tightened spring gradually loosens, causing the shaft, winding drum, and mounting plate to rotate in four directions to wind up the unfolded tape.

[0027] In one embodiment, the braking device includes:

[0028] Mounting ring two is fixedly connected to the slide plate. Multiple circumferentially distributed toothed grooves are provided on the inner circumferential surface of mounting ring two. Each toothed groove has a straight toothed surface and an oblique toothed surface. The straight toothed surface of one toothed groove intersects the oblique toothed surface line of the adjacent toothed groove. The other end of the rotating shaft passes through the slide plate and extends into mounting ring two and is coaxial with mounting ring two.

[0029] An inner ring is tightly fitted onto the other end of the rotating shaft and is coaxially arranged with the rotating shaft; a mounting plate is fixedly provided on the inner ring.

[0030] An outer ring is fitted outside the inner ring and is fixedly connected to the mounting plate three and is coaxial with the inner ring. The outer ring is located inside the mounting ring two and does not contact the mounting ring two. The outer ring is provided with a sliding hole extending radially through the outer ring. There are multiple sliding holes, which are distributed circumferentially.

[0031] The second slider is slidably installed in the sliding hole along the radial direction of the outer ring, and the end of the second slider near the tooth groove is provided with an inclined surface;

[0032] A spring connects the second slider and the inner ring at both ends. When the rotating shaft rotates rapidly, the second slider overcomes the tension of the spring and slides radially away from the rotating shaft into the tooth groove. The inclined surface of the second slider extending into the tooth groove can fit against the inclined tooth surface. The second slider, which is close to the straight tooth surface, can prevent the rotating shaft from rotating forward. When the rotating shaft does not rotate, the spring pulls the second slider to slide radially out of the tooth groove while it is close to the straight tooth surface. When the rotating shaft rotates in reverse, the inclined tooth surface pushes the inclined surface of the second slider that has entered the tooth groove to slide radially out of the tooth groove.

[0033] In one embodiment, the braking device further includes an end cap located on the side of the mounting ring two away from the rotating shaft, and the end cap is coaxially and fixedly connected to the mounting ring two.

[0034] Furthermore, this invention also proposes a bridge maintenance method, comprising:

[0035] Adjust the height of the skateboard and hanging basket to be the same;

[0036] Control the hanging basket to move to both ends of the longitudinal support beam. When the hanging basket is close to the slide plate, unfold the winding of the tensioning device on the slide plate and connect it to the hanging basket.

[0037] Control the hanging basket to move along the longitudinal support beam and rotate around the guide rail, so that the two hanging baskets can be detachably and fixedly connected;

[0038] With the sliding plate and the hanging basket at the same height, control the lifting and / or translation of the hanging basket to the maintenance position to carry out bridge maintenance.

[0039] After the maintenance is completed, first separate the two hanging baskets, then separate the two conveyor belts from the hanging baskets, control the hanging baskets to rotate around the guide rails and move to either end of the longitudinal support beam.

[0040] Beneficial effects: The bridge inspection platform of this invention can be installed and fixed on the bridge without affecting traffic on the bridge or navigation under the bridge. Therefore, it can be fixed on the bridge for a long time and can be used for bridge inspection and maintenance at any time. When it is necessary to inspect or repair the bridge, the staff stands on the bridge inspection platform and controls the movement of the bridge inspection platform to carry out inspection and maintenance of all parts of the bridge without blind spots. There is no need to build scaffolding, saving time and labor. The bridge inspection platform is not affected by traffic on the bridge or the terrain under the bridge, and is suitable for the inspection of various types of bridges. Attached Figure Description

[0041] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the bridge maintenance platform of the present invention during operation;

[0043] Figure 2 This is a schematic diagram of the structure of the hanging basket of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of the manned lifting mechanism of the present invention;

[0045] Figure 4 This is a schematic diagram of the walking mechanism of the present invention;

[0046] Figure 5 This is a schematic diagram of the bridge maintenance platform of the present invention when it is not in operation;

[0047] Figure 6 yes Figure 1 Enlarged view of part A in the image;

[0048] Figure 7This is a schematic diagram of the tensioning device of the present invention;

[0049] Figure 8 yes Figure 7 A schematic diagram of the tensioning device after the cover has been removed;

[0050] Figure 9 This is a diagram of the internal structure of the box in the tensioning device;

[0051] Figure 10 This is a schematic diagram of the braking device of the present invention. Figure 1 ;

[0052] Figure 11 This is a schematic diagram of the structure of the skateboard of the present invention;

[0053] Figure 12 This is an internal structural diagram of the braking device of the present invention;

[0054] Figure 13 This is a schematic diagram of the braking device of the present invention. Figure 2 ;

[0055] Figure 14 This is a schematic diagram of the structure of slider two of the present invention;

[0056] Figure 15 This is a schematic diagram of the structure of the mounting ring two of the present invention.

[0057] The annotations in the attached figures are explained as follows:

[0058] 1. Bridge; 2. Longitudinal support beam; 3. Bolt;

[0059] 4. Walking mechanism; 40. Mounting ring one; 41. Mounting plate one; 42. Roller assembly one; 43. Connecting rod; 44. Motor one; 45. Connecting cylinder; 46. Gear one; 47. Wheel and axle one; 48. Gear two; 49. Wheel and axle two;

[0060] 5. Passenger lifting mechanism; 51. Hanging basket; 52. Hook; 53. Roller assembly II; 54. Guide rail; 55. Telescopic device;

[0061] 6. Vertical support beam; 63. Slide groove; 64. Rack;

[0062] 7. Mounting plate two; 8. Buried pile; 9. Slide plate; 91. Slider one; 10. Rotating shaft; 11. Box body; 12. Box cover; 13. Belt winding; 14. Through hole; 15. Belt exit hole; 16. Mounting hole one; 17. Mounting hole two; 18. Mounting ring two; 19. Gear groove; 191. Straight tooth surface; 192. Helical tooth surface; 20. End cap; 21. Inner ring; 22. Outer ring; 23. Mounting plate three; 24. Sliding hole; 25. Slider two; 251. Sliding wall surface; 26. Spring; 27. Inclined surface; 28. Motor two; 29. ​​Gear three; 30. Motor three; 31. Winding drum; 32. Spring; 33. Mounting rod; 34. Mounting plate four; 35. Slot. Detailed Implementation

[0063] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0064] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0067] This invention proposes a bridge maintenance platform that can be installed and fixed on bridge 1 without affecting traffic on the bridge or navigation under the bridge. Therefore, it can be permanently fixed on bridge 1 and can be used for inspection and maintenance of bridge 1 at any time. When inspection or maintenance work is required on bridge 1, workers stand on the bridge maintenance platform and control its movement to conduct a thorough inspection and maintenance of all parts of bridge 1 without blind spots. No scaffolding is required, saving time and labor. The bridge maintenance platform is not affected by traffic on the bridge or the terrain under the bridge and is suitable for the maintenance of various types of bridges 1.

[0068] Specifically, in one embodiment of the invention, such as Figure 1 and Figure 5 As shown, the bridge maintenance platform includes a longitudinal support beam 2 and a traveling mechanism 4 slidably installed on the longitudinal support beam 2. The longitudinal support beam 2 is horizontally arranged and fixedly connected to the bridge 1 by bolts 3. Preferably, the bolts 3 are expansion bolts 3.

[0069] In this embodiment, as Figure 4As shown, the walking mechanism 4 includes: a pair of vertically spaced parallel mounting plates 41, a roller assembly 42, a motor 44, and a connecting cylinder 45. The two mounting plates 41 are fixedly connected by multiple connecting rods 43. The roller assembly 42 is symmetrically arranged on the two mounting plates 41 and is rotatably connected to the longitudinal support beam 2. The pair of mounting plates 41 are suspended on the longitudinal support beam 2 by the roller assembly 42 and move along the longitudinal support beam 2 under the drive of the pair of roller assemblies 42. The mechanism 4 moves smoothly on the longitudinal support beam 2, preventing tilting of the guide rail 54 and connecting cylinder 45 that could endanger the safety of the passenger lifting mechanism 5. Each pair of roller assemblies 42 has at least two rollers along the walking direction. The motor 44 is fixed on the mounting plate 41 and is connected to the roller assembly 42 for transmission, driving the roller assembly 42 to roll along the longitudinal support beam 2, thereby driving a pair of mounting plates 41 to move along the longitudinal support beam 2. One end of the connecting cylinder 45 is fixedly connected to the mounting plate 41, and the other end is connected to the mounting ring. A mounting ring 40 is fixedly connected to the upper end of a vertically positioned guide rail 54. The central axis of the mounting ring 40 is vertical, and the mounting ring 40 is rotatably connected to the upper end of the vertically positioned guide rail 54. A motor 30 is mounted on the connecting cylinder 45, and the output shaft of the motor 30 is connected to a wheel axle 47. A gear 46 is mounted on the wheel axle 47. A wheel axle 49 is coaxially fixed to the upper end of the guide rail 54, and a gear 48 is mounted on the wheel axle 49. Gears 46 and 48 mesh. This design allows the motor 30 to drive the guide rail 54. The rail 54 rotates around its own vertical axis, and in conjunction with the motor 44, drives a pair of mounting plates 41 to move along the longitudinal support beam 2, thereby moving the personnel lifting mechanism 5 to various parts of the bridge 1 for inspection and maintenance without blind spots. No scaffolding is required, saving time and effort. The longitudinal support beam 2 is directly fixed to the bridge 1, without affecting traffic on the bridge or navigation under the bridge. Therefore, it can be fixed to the bridge 1 for a long time and can be used for inspection and maintenance of the bridge 1 at any time. It is not affected by traffic on the bridge or the terrain under the bridge, and is suitable for the inspection and maintenance of various types of bridges 1.

[0070] In this embodiment, as Figure 1 and Figure 5 As shown, a passenger lifting mechanism 5 is suspended below the walking mechanism 4. The walking mechanism 4 drives the passenger lifting mechanism 5 to move horizontally along the longitudinal support beam 2, as shown. Figure 3 As shown, the passenger lifting mechanism 5 includes: a guide rail 54, a hanging basket 51, and a telescopic device 55. The guide rail 54 is vertically arranged, with its upper end rotatably connected to the mounting ring 40 and driven by the motor 30. The motor 30 drives the guide rail 54 to rotate around the central axis of the mounting ring 40, which is also its own central axis. The hanging basket 51 is located at the lower end of the guide rail 54 and is vertically slidably / rollingly connected to the guide rail 54, preferably rollingly connected, such as... Figure 3As shown, a roller assembly 53 is installed on the side of the hanging basket 51 near the guide rail 54. The roller assembly 53 is rotatably connected to the guide rail 54 and can roll up and down along the guide rail 54. The telescopic device 55 is inclined and its two ends are respectively hinged to the hanging basket 51 and the guide rail 54. With this design, the telescopic device 55 can drive the hanging basket 51 to vertically raise and lower along the guide rail 54 to adjust the height of the hanging basket 51, thereby enabling inspection and maintenance of various parts of the bridge 1 without blind spots. Moreover, the inclined setting of the telescopic device 55 can form a stable triangular structure with the hanging basket 51 and the guide rail 54, which is conducive to the stable raising and lowering of the hanging basket 51. Commonly, the telescopic device 55 is a cylinder, a hydraulic cylinder, or a linear motor.

[0071] In this embodiment, when inspecting bridge 1, all personnel and various inspection and construction tools and equipment are placed in the hanging basket 51. The hanging basket 51 is equipped with a control switch. The personnel stand on the hanging basket 51 and operate the control switch to control the lifting and lowering of the hanging basket 51, its horizontal movement along the longitudinal support beam 2, and its rotation around the guide rail 54. This allows the hanging basket 51 to be moved to various parts of bridge 1 for inspection and maintenance without blind spots. There is no need to build scaffolding, which saves time and effort. The longitudinal support beam 2 is directly fixed to bridge 1. The bridge inspection platform is not affected by traffic on the bridge or the terrain below the bridge, and is suitable for the inspection of various types of bridges 1.

[0072] In this embodiment, the bridge maintenance platform is installed and fixed to the bridge 1 via longitudinal support beams 2, as follows: Figure 1 As shown, during the maintenance work on bridge 1, the operation of the traveling mechanism 4 and the personnel lifting mechanism 5 does not affect traffic on the bridge. Figure 5 As shown, when no maintenance work is being carried out on bridge 1, the personnel lifting mechanism 5 is moved to any end of the longitudinal support beam 2 and retracted, without affecting navigation under the bridge. Therefore, the bridge maintenance platform can be fixed on bridge 1 for a long time and can be used for inspection and maintenance of bridge 1 at any time. Especially for bridges 1 with a long service life or high maintenance frequency, the bridge maintenance platform can be installed and fixed on such bridges 1, saving the trouble of frequently setting up scaffolding and frequently stopping bridge inspection vehicles on the bridge, which affects traffic. It saves time and effort. When it is necessary to inspect or carry out maintenance work on bridge 1, the staff stands on the hanging basket 51 and controls the bridge maintenance platform to move the hanging basket 51 to carry out inspection and maintenance of all parts of bridge 1 without dead angles. There is no need to set up scaffolding. The bridge maintenance platform is not affected by traffic on the bridge or the terrain under the bridge, and is suitable for the maintenance of various types of bridges 1.

[0073] Furthermore, such as Figure 1 As shown, there is a pair of longitudinal support beams 2, which are parallel to each other and spaced apart. The pair of longitudinal support beams 2 are located on both sides of the bridge 1 in the direction of water flow. The hanging baskets 51 below the two longitudinal support beams 2 are detachably connected. Preferably, the two hanging baskets 51 are connected by hooks 52, as shown. Figure 2As shown, this design allows for the connection of two hanging baskets 51 when there are many workers and various maintenance and construction tools and equipment, or when the inspection position of Bridge 1 is inconvenient for inspection. This increases the working area for workers, facilitating maintenance and construction. Then, the two hanging baskets 51 are controlled to move synchronously to complete the maintenance and construction of Bridge 1. Figure 1 As shown, after construction is completed, the two hanging baskets 51 will be separated, and each hanging basket 51 will be moved to one end of the longitudinal support beam 2, as shown. Figure 5 As shown.

[0074] Furthermore, such as Figure 1 As shown, both ends of the longitudinal support beam 2 are fixedly connected to a vertical support beam 6. The two vertical support beams 6 are parallel to each other and fixedly connected to the bridge 1 by bolts 3. This design helps the vertical support beams 6 to enhance the stability of the longitudinal support beam 2, preventing the longitudinal support beam 2 from loosening and falling off, and ensuring the safety of the bridge maintenance platform. Furthermore, the lower end of the vertical support beam 6 is fixed with a buried pile 8 through an installation plate 2 7. The buried pile 8 is inserted into the ground, using the buried pile 8 to support and fix the vertical support beam 6, enhancing the fixing effect of the vertical support beam 6 and ensuring the safety of the bridge maintenance platform. Of course, In other embodiments, the length of the buried piles 8 can be set to be larger, and then only the buried piles 8 are used to support and fix the entire vertical support beam 6 and the longitudinal support beam 2. The vertical support beam 6 and the longitudinal support beam 2 are not fixedly connected to the bridge 1. This design eliminates the trouble of fixing the vertical support beam 6 and the longitudinal support beam 2 to the bridge 1, and facilitates the quick disassembly and reuse of the bridge maintenance platform. Normally, after the vertical support beam 6 and the longitudinal support beam 2 are fixedly connected to the bridge 1, the bridge maintenance platform will be permanently fixed to the bridge 1 and cannot be disassembled. It is used specifically for the maintenance of the bridge 1 and cannot be reused by other bridges 1.

[0075] During the bridge maintenance work using the platform of this embodiment, workers inevitably engage in hammering, repairing, and patching. These vigorous and large-amplitude movements cause significant vibration and impact on the hanging basket 51, easily leading to violent shaking and endangering worker safety. Furthermore, they can cause mis-rolling of roller assemblies 42 and 53, and mis-rotation of the guide rail 54, affecting the stability of the hanging basket 51. Even with the use of braked motors 44 and 30, roller assemblies 42 and 53, and the guide rail 54 to slow down the shaking of the hanging basket 51, the impact is still significant. Intense and frequent vibrations and impacts can exacerbate the wear of the aforementioned components, causing a series of problems such as loosening of connections between components and damage to brake components, thus affecting the service life of the bridge maintenance platform. Based on this, the present invention adds a winding belt 13 to tighten the hanging basket 51, reduce the swaying of the hanging basket 51, and absorb the vibration and impact on the hanging basket 51 during construction, thereby protecting the safety of the personnel lifting mechanism 5 and the traveling mechanism 4, preventing the various components in the aforementioned mechanisms from being damaged by severe and frequent vibrations and impacts, effectively extending the service life of the bridge maintenance platform, and ensuring construction safety.

[0076] Specifically, the above functions are implemented through the following structure.

[0077] like Figure 6 As shown, both vertical support beams 6 are vertically equipped with racks 64 and grooves 63, as follows: Figure 10 and Figure 12 As shown, a slide plate 9 is vertically slidably installed in the slide groove 63. A slider 91 is provided on the slide plate 9. The slider 91 is vertically slidably installed in the slide groove 63. A motor 28 is fixed on the slide plate 9. A gear 29 is installed on the motor 28. The gear 29 meshes with the rack 64. When the motor 28 is started, it drives the slide plate 9 to slide along the slide groove 63 and rise and fall on the vertical support beam 6. The height of the slide plate 9 is adjusted so that it is level with the hanging basket 51 to facilitate the connection of the winding belt 13.

[0078] In this embodiment, as Figure 7 , Figure 10 and Figure 12As shown, a tensioning device and a braking device are fixed on the slide plate 9. The tensioning device and the braking device are located on both sides of the slide plate 9 and are connected by a rotating shaft 10. The tensioning device has a winding belt 13, which is connected to the hanging basket 51. The braking device is used to brake the rotating shaft 10 when the hanging basket 51 is subjected to severe vibration and impact, so that the winding belt 13 cannot extend. This achieves the purpose of tightening the hanging basket 51 by the winding belt 13 and reducing the swaying of the hanging basket 51. In this process, the winding belt 13 absorbs the vibration and impact on the hanging basket 51 during construction, protects the safety of the personnel lifting mechanism 5 and the traveling mechanism 4, avoids damage to the various components in the above mechanisms due to severe and frequent vibration and impact, effectively extends the service life of the bridge maintenance platform, and ensures construction safety.

[0079] Specifically, in this embodiment, such as Figures 7-12 As shown, the tensioning device includes: a box body 11, a mounting plate 34, a winding strip 13, and a spring 32. The box body 11 is fixedly connected to the sliding plate 9, as shown. Figure 9 As shown, one end of the rotating shaft 10 extends into the housing 11, and the housing 11 is provided with a tape outlet hole 15, as shown. Figure 7 As shown, a cover 12 is detachably and fixedly installed on the side of the box body 11 away from the slide plate 9; as Figure 9 As shown, the mounting plate 34 is located inside the housing 11 and is coaxially and fixedly connected to the rotating shaft 10. A winding cylinder 31 is coaxially fixed on the mounting plate 34, and the winding cylinder 31 is located inside the housing 11. Figure 8 As shown, the tape 13 is located inside the box body 11 and is wound on the winding cylinder 31. One end of the tape 13 unfolds, passes through the tape hole 15, extends out of the box body 11, and connects to the hanging basket 51. To facilitate the connection between the tape 13 and the hanging basket 51, as shown... Figure 7 As shown, one end of the winding tape 13 is provided with a through hole 14, which is used to suspend one end of the winding tape 13 on the hanging basket 51. The suspension position of the winding tape 13 on the hanging basket 51 should not affect the movement and rotation of the hanging basket 51. The unwinding of the winding tape 13 drives the winding drum 31, the mounting plate 34, and the rotating shaft 10 to rotate clockwise. Figure 8 As shown, the spring 32 is located inside the winding cylinder 31 and wound on the rotating shaft 10, as... Figure 9 As shown, the rotating shaft 10 is provided with a slot 35, and one end of the mainspring 32 is locked in the slot 35, such as... Figure 8As shown, the other end of the spring 32 is fixedly connected to the mounting rod 33, which is fixedly connected to the cover 12. The rotating shaft 10 rotates clockwise to tighten the spring 32, thus ensuring that the unfolded coil 13 is taut. When the hanging basket 51 moves close to the tensioning device, the tightened spring 32 loosens, causing the rotating shaft 10, winding cylinder 31, and mounting plate 34 to reverse, causing the unfolded coil 13 to wind up and retract. This ensures that the coil 13 is always taut and prevents it from loosening and sagging. The design, in conjunction with the braking device, brakes the rotating shaft 10 when the hanging basket 51 shakes violently, preventing the winding belt 13 from extending. This allows the winding belt 13 to tighten the hanging basket 51, reducing its shaking. During this process, the winding belt 13 absorbs the vibration and impact on the hanging basket 51 during construction, protecting the safety of the personnel lifting mechanism 5 and the traveling mechanism 4. It also prevents damage to the various components within these mechanisms from severe and frequent vibration and impact, effectively extending the service life of the bridge maintenance platform and ensuring construction safety.

[0080] In this embodiment, after the tensioning device's winding tape 13 on the sliding plate 9 of the two vertical support beams 6 is connected to the hanging basket 51, the hanging basket 51 moves along the longitudinal support beam 2, approaching one of the tensioning devices while moving away from the other. During this process, the winding tape 13 on the other tensioning device unfolds, and the winding tape 13 on one of the tensioning devices retracts. Both winding tapes 13 remain taut, ensuring that the hanging basket 51 can smoothly tension the winding tape 13 without affecting the movement of the hanging basket 51.

[0081] In this embodiment, as Figures 10-15 As shown, the braking device includes: a second mounting ring 18, an inner ring 21, an outer ring 22, a second slider 25, and a spring 26. The second mounting ring 18 is fixedly connected to the slide plate 9, for example... Figure 11 As shown, the slide plate 9 is provided with mounting holes 16, such as... Figure 10 As shown, the mounting ring 18 is provided with mounting hole 17. Mounting hole 16 and mounting hole 17 correspond one-to-one, which facilitates the bolt 3 to pass through mounting hole 16 and mounting hole 17 to fix the mounting ring 18 to the slide plate 9.

[0082] In this embodiment, as Figures 13-15 As shown, the inner circumferential surface of the mounting ring 18 is provided with multiple circumferentially distributed toothed grooves 19. Each toothed groove 19 has a straight tooth surface 191 and a helical tooth surface 192. The straight tooth surface 191 of one toothed groove 19 intersects the helical tooth surface 192 of the adjacent toothed groove 19. This design connects two adjacent toothed grooves 19, ensuring that when the slider 25 moves radially, it can always slide into one of the toothed grooves 19 in the shortest possible time to stop the rotating shaft 10 from rotating forward. The braking is efficient, stable, and reliable. Figure 12As shown, the other end of the rotating shaft 10 passes through the sliding plate 9 and extends into the mounting ring 18, where it is coaxial with the mounting ring 18; Figures 12-14 As shown, the inner ring 21 is tightly fitted onto the other end of the rotating shaft 10 and is coaxially arranged with the rotating shaft 10. A mounting plate 3 23 is fixedly mounted on the inner ring 21. The outer ring 22 is fitted around the inner ring 21 and is fixedly connected to the mounting plate 3 23, and is coaxial with the inner ring 21. This design allows the rotating shaft 10 to rotate synchronously, driving the mounting plate 3 23, the inner ring 21, and the outer ring 22. The outer ring 22 is located inside the mounting ring 2 18 and does not contact the mounting ring 2 18. This design avoids friction between the mounting ring 2 18 and the outer ring 22, which could affect the rotation of the outer ring 22. Figure 14 As shown, the outer ring 22 is provided with multiple sliding holes 24 extending radially through the outer ring 22, and these sliding holes 24 are distributed circumferentially; for example... Figure 13 and Figure 14 As shown, the second slider 25 is slidably installed in the sliding hole 24 along the radial direction of the outer ring 22. An inclined surface 27 is provided at one end of the second slider 25 near the toothed groove 19. The surface of the second slider 25 that is in close sliding contact with the sliding hole 24 is the sliding wall surface 251. The two ends of the spring 26 connect the second slider 25 and the inner ring 21.

[0083] During the maintenance and construction of Bridge 1, the workers hammered, repaired, and patched things up. When their movements were vigorous and large, the hanging basket 51 would be subjected to severe vibration and impact. Specifically, the hanging basket 51 would suddenly pull the winding belt 13, causing the rotating shaft 10 to rotate rapidly in the forward direction, as shown in the image below. Figure 8 and Figure 14 As shown by the middle arrow, under the action of enormous centrifugal force, such as Figure 13 and Figure 14 As shown, the second slider 25 can overcome the tension of the spring 26 and slide radially into the tooth groove 19 along the sliding hole 24 in a direction away from the rotating shaft 10. When the sliding wall surface 251 is in close contact with the straight tooth surface 191, the second slider 25 is blocked by the tooth groove 19, preventing the outer ring 22, mounting plate 23, inner ring 21, and rotating shaft 10 from rotating in the correct direction. Therefore, when the hanging basket 51 pulls the winding belt 13 sharply, the second slider 25 quickly inserts into the tooth groove 19 to prevent the winding belt 13 from being pulled out further, effectively preventing the hanging basket 51 from shaking violently after being subjected to vibration and impact, absorbing the vibration and impact on the hanging basket 51, protecting the safety of the personnel lifting mechanism 5 and the traveling mechanism 4, and preventing the various components in the above mechanisms from being damaged by violent and frequent vibration and impact, effectively extending the service life of the bridge maintenance platform and ensuring construction safety; Figure 13 and Figure 14As shown, when the rotating shaft 10 is not rotating, the spring 26 pulls the slider 25 to slide radially out of the tooth groove 19 while closely adhering to the straight tooth surface 191, thus resetting it. At this time, the straight tooth surface 191 is parallel to the radial sliding direction of the slider 25. This design ensures that the straight tooth surface 191 will not obstruct the slider 25 from sliding radially away from the tooth groove 19, guaranteeing that after the rotating shaft 10 stops rotating, the slider 25 can quickly slide radially away from the tooth groove 19 without delaying or affecting the subsequent movement of the hanging basket 51 to pull the winding belt 13 to unfold. The walking mechanism 4 and the personnel lifting mechanism... 5. Due to its slow movement speed, the speed at which it pulls the hanging basket 51 to move, causing the winding belt 13 to unfold and the rotating shaft 10 to rotate forward is relatively small. The slider 25 cannot overcome the tension of the spring 26 and cannot slide radially along the sliding hole 24 into the tooth groove 19. Therefore, when the hanging basket 51 moves normally, it can smoothly pull the winding belt 13 to unfold, the braking device does not brake, and the tensioning device can work normally. Only when the hanging basket 51 suffers a violent vibration or impact is the rotating shaft 10 quickly braked by the braking device and prevented from rotating forward, thus protecting the safety of the bridge maintenance platform; Figure 13 and Figure 14 As shown, the inclined surface 27 of the slider 25 extending into the tooth groove 19 can fit against the inclined tooth surface 192. With this design, when the rotating shaft 10 reverses, the inclined tooth surface 192 can push the inclined surface 27 of the slider 25 extending into the tooth groove 19 to slide radially out of the tooth groove 19. The slider 25 does not obstruct the rotating shaft 10 from reversing. Therefore, the tensioning device can smoothly retract the unfolded roll 13. It can be seen that the braking device can brake the rotating shaft 10 only when the rotating shaft 10 suddenly and rapidly rotates forward. When the rotating shaft 10 reverses or rotates forward at a small speed, the braking device does not brake the rotating shaft 10. This design does not affect the movement of the hanging basket 51 under the drive of the traveling mechanism 4 and the personnel lifting mechanism 5 to inspect the bridge 1, so that the roll 13 can be smoothly unfolded or retracted. At the same time, it can quickly brake the tensioning device when the hanging basket 51 is subjected to severe vibration and impact, so that the roll 13 does not unfold, avoid the hanging basket 51 from shaking violently, protect the safety of the staff and the safety of various components of the bridge maintenance platform, and extend the service life of the bridge maintenance platform.

[0084] In this embodiment, to protect the safety of the vibration device and prevent foreign objects from entering the braking device and affecting its operation, such as... Figure 10 and Figure 12 As shown, the braking device also includes an end cap 20, which is located on the side of the mounting ring 18 away from the rotating shaft 10, and the end cap 20 is coaxially and fixedly connected to the mounting ring 18.

[0085] Furthermore, this invention also proposes a bridge maintenance method, which uses the aforementioned bridge maintenance platform to perform the following steps:

[0086] S1, the adjusting slide plate 9 and the hanging basket 51 are at the same height, which facilitates the subsequent unfolding of the winding belt 13 and connection with the hanging basket 51;

[0087] S2. Control the hanging basket 51 to move to both ends of the longitudinal support beam 2. When the hanging basket 51 is close to the slide plate 9, unfold the winding belt 13 of the tensioning device on the slide plate 9 and connect it to the hanging basket 51. For example, first control the hanging basket 51 to move to one end of the longitudinal support beam 2, connect the winding belt 13 of the tensioning device on the slide plate 9 on the vertical support beam 6 at that end, and then control the hanging basket 51 to move to the other end of the longitudinal support beam 2 and connect another winding belt 13.

[0088] S3. Control the hanging basket 51 to move along the longitudinal support beam 2 and rotate around the guide rail 54 so that the two hanging baskets 51 can be detachably and fixedly connected. If the number of construction personnel, construction equipment and materials are small, one hanging basket 51 is enough, and this step is not required.

[0089] S4. Under the condition that the sliding plate 9 and the hanging basket 51 are at the same height and level, control the lifting and / or horizontal movement of the hanging basket 51 to the maintenance position to carry out maintenance on the bridge 1. During the maintenance process, large-amplitude construction actions such as drilling holes and knocking cement blocks on the bridge 1 will cause vibration and impact on the hanging basket 51. At this time, the braking device brakes the tensioning device so that the winding belt 13 cannot continue to unfold, so as to avoid the hanging basket 51 shaking violently and protect the construction safety.

[0090] S5. After maintenance, first separate the two hanging baskets 51, then separate the two conveyor belts 13 from the hanging baskets 51, control the hanging baskets 51 to rotate around the guide rail 54 and move them to either end of the longitudinal support beam 2, such as... Figure 5 As shown, the hanging basket 51 at this location does not affect navigation under the bridge.

[0091] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A bridge maintenance platform, characterized in that, The walking mechanism is hung with the passenger lifting mechanism below, and the passenger lifting mechanism is driven by the walking mechanism to move horizontally along the longitudinal support beam; The walking mechanism comprises: A pair of vertically spaced parallel installation plates I are fixedly connected by connecting rods; A pair of symmetrically arranged roller assemblies I are arranged on the two installation plates I, the roller assemblies I are rollingly connected with the longitudinal support beam, and the installation plates I are suspended on the longitudinal support beam through the roller assemblies I; A motor I is fixedly arranged on the installation plate I and is in transmission connection with the roller assembly I, and is used to drive the roller assembly I to roll along the longitudinal support beam; One end of the connecting cylinder is fixedly connected with the installation plate I, and the other end is fixedly connected with the installation ring I, the central axis of the installation ring I is vertical, and the connecting cylinder is provided with a motor III; The passenger lifting mechanism comprises: A guide rail is vertically arranged, the upper end of the guide rail is in rotary connection with the installation ring I, and the motor III is in transmission connection with the guide rail, so that the guide rail is driven to rotate around the central axis of the installation ring I by the motor III; A hanging basket is located at the lower end of the guide rail and is in vertical sliding / rolling connection with the guide rail; A telescopic device is hingedly connected with the hanging basket and the guide rail at two ends, and is used to drive the hanging basket to vertically ascend and descend along the guide rail; The longitudinal support beam has a pair of longitudinal support beams which are parallel and spaced apart, and the hanging baskets below the two longitudinal support beams are detachably connected; The two longitudinal support beams are arranged on the two side walls of the bridge in the water flow direction; The two ends of the longitudinal support beam are fixedly connected with a vertical support beam, and the two vertical support beams are parallel and fixedly connected with the bridge; The lower end of the vertical support beam is fixedly provided with a buried pile which is inserted into the ground; A rack and a sliding groove are vertically arranged on the two vertical support beams, a sliding plate is vertically slidingly arranged in the sliding groove, a motor II is fixedly arranged on the sliding plate and is in transmission connection with the rack, and the sliding plate is driven to ascend and descend along the sliding groove by the motor II; The sliding plate is fixedly provided with a tensioning device and a braking device which are in transmission connection through a rotating shaft; The tensioning device comprises: A box body is fixedly connected with the sliding plate, one end of the rotating shaft extends into the box body, the box body is provided with a belt outlet hole, and a box cover is detachably fixedly arranged on the side of the box body away from the sliding plate; An installation plate IV is coaxially fixedly connected with the rotating shaft in the box body, a winding cylinder is coaxially fixedly arranged on the installation plate IV, and the winding cylinder is located in the box body; A winding belt is located in the box body and is wound on the winding cylinder, one end of the winding belt extends out of the box body through the belt outlet hole and is connected with the hanging basket, and the unwinding of the winding belt drives the winding cylinder, the installation plate IV and the rotating shaft to rotate forward; A clockwork spring is located in the winding cylinder and is wound on the rotating shaft, one end of the clockwork spring is fixedly connected with the rotating shaft, and the other end is fixedly connected with the box cover through an installation rod, the forward rotation of the rotating shaft drives the clockwork spring to be tightened, the tightened clockwork spring gradually loosens to drive the rotating shaft, the winding cylinder and the installation plate IV to rotate reversely to wind up the unwound winding belt; The braking device comprises: The second mounting ring is fixedly connected with the sliding plate, and a plurality of circumferentially distributed tooth grooves are arranged on the inner circumferential surface of the second mounting ring. Each tooth groove has a straight tooth surface and an inclined tooth surface. The straight tooth surface of one tooth groove intersects with the inclined tooth surface line of the adjacent tooth groove. The other end of the rotating shaft penetrates the sliding plate and extends into the second mounting ring coaxially with the second mounting ring. The inner ring is tightly sleeved on the other end of the rotating shaft and is coaxially arranged with the rotating shaft. The mounting plate three is fixedly arranged on the inner ring. The outer ring is sleeved outside the inner ring and is fixedly connected with the mounting plate three and coaxial with the inner ring. The outer ring is located in the second mounting ring and does not contact the second mounting ring. The outer ring is provided with a plurality of radial sliding holes penetrating the outer ring. The sliding block two is arranged in the sliding hole. The sliding block two is arranged in the sliding hole. The end of the sliding block two close to the tooth groove is provided with an inclined surface. The spring is connected between the sliding block two and the inner ring. The rapid rotation of the rotating shaft can drive the sliding block two to slide radially away from the rotating shaft to extend into the tooth groove against the pulling force of the spring. The inclined surface of the sliding block two extending into the tooth groove can be attached to the inclined tooth surface. The sliding block two tightly attached to the straight tooth surface can block the forward rotation of the rotating shaft. When the rotating shaft does not rotate, the spring pulls the sliding block two to slide radially out of the tooth groove. When the rotating shaft reverses, the inclined tooth surface pushes the inclined surface of the sliding block two extending into the tooth groove to slide radially out of the tooth groove.

2. A bridge maintenance platform as claimed in claim 1, wherein, The brake device further comprises an end cover, which is located on the side of the second mounting ring away from the rotating shaft and is fixedly connected with the second mounting ring coaxially.

3. A method of inspecting a bridge, applied to the bridge inspection platform according to any one of claims 1-2, characterized in that, The method comprises the following steps: Adjusting the height of the sliding plate and the hanging basket; Controlling the hanging basket to move to the two ends of the longitudinal support beam, and when the hanging basket approaches the sliding plate, the tape of the tensioning device on the sliding plate is unwound and connected with the hanging basket; Controlling the hanging basket to move along the longitudinal support beam and rotate around the guide rail, so that the two hanging baskets can be detachably fixedly connected; Under the condition that the sliding plate and the hanging basket are kept at the same height, controlling the hanging basket to ascend and / or translate to the maintenance position to maintain the bridge; After the maintenance is completed, first separate the two hanging baskets, then separate the two tapes from the hanging baskets, control the hanging basket to rotate around the guide rail and move to any end of the longitudinal support beam.

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