A prefabricated box beam maintenance device

Abstract

The present invention relates to the technical field of bridge maintenance equipment, and specifically discloses a prefabricated box girder maintenance device, including a device body, wherein the device body includes a bearing mechanism and a spraying mechanism, the bearing mechanism is configured as a plurality of groups, and is arranged in an array along the length direction of the box girder, each group of the bearing mechanism includes a first support frame and a second support frame, a first driving component is provided on the bearing mechanism, the first driving component is used to drive the plurality of groups of bearing mechanisms to move along the length direction of the box girder, and to arrange the plurality of groups of bearing mechanisms equidistantly, so that the bearing mechanisms have a storage state and an expanded state, the spraying mechanism is configured as a plurality of groups, each group of the spraying mechanism includes a water pipe and a second driving component, a plurality of nozzles are provided on the water pipe, and the second driving component is used to drive the water pipe to rotate around its own axis to increase the spraying area of ​​the nozzle; the present invention can adapt the device body to the maintenance of box girders of different lengths through the expansion degree of the bearing mechanism, and can improve the maintenance efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bridge maintenance equipment, and in particular to a prefabricated box girder maintenance device. Background Art

[0002] As an important component of an elevated bridge, prefabricated box girders usually need to be pre-manufactured in a beam manufacturing plant. The prefabricated box girders are placed side by side and at intervals in the beam factory. This arrangement is convenient for transportation and maintenance. Most related technologies use spray curing and steam curing to maintain the box girders. Among them, spray curing can effectively improve the strength of the box girder concrete and prevent cracks by spraying water on the box girder, while steam curing is mainly used for winter construction. Steam is passed through the insulation shed and the beam body is cured by steam heating and insulation to ensure the concrete quality of the prefabricated box girder in a low temperature environment.

[0003] The patent application document with publication number CN117086991A discloses a spray maintenance device for prefabricated box girders of highway bridges, including a prefabricated box girder, a water pipe and a base, and also includes a plurality of nozzles, which are arranged on the water pipe and connected thereto; a support plate, which is arranged on the base, and a support frame is arranged on the support plate; a pressing mechanism, which is arranged on the support frame and is used to press and fix the water pipe; two docking seats, which are respectively arranged on both sides of the support plate; a connecting rod, which is arranged between two adjacent support plates, and a fixing mechanism is arranged on the docking seat for fixing the connecting rod. The patent application document presses and fixes the outer wall of the water pipe through the pressing mechanism, thereby stably supporting and fixing the water pipe, and spraying and curing the hollow part and the outer wall of the prefabricated box girder can be performed through the nozzle, which can avoid the current situation that the interior of the prefabricated box girder cannot be sprayed, so that the overall hardness of the prefabricated box girder is further and more comprehensively and thoroughly increased, thereby greatly improving the quality of the prefabricated box girder and bridge construction.

[0004] However, when using the above-mentioned maintenance device to maintain the prefabricated box girder, it is necessary to manually place multiple support plates and the components thereon into the internal hollow space of the prefabricated box girder and on both sides of the prefabricated box girder, and then install the installed water pipes and nozzles together with the support frames on the support plates. The operation is cumbersome, and the device cannot adapt to prefabricated box girders of different lengths. It is not very applicable and is not easy to store. Summary of the invention

[0005] The present invention provides a prefabricated box girder maintenance device, aiming to solve the problems in the related art that when the maintenance device is used to maintain the prefabricated box girder, the operation is cumbersome, the device cannot be adapted to prefabricated box girders of different lengths, the applicability is low, and it is not easy to store.

[0006] A prefabricated box beam curing device of the present invention comprises a device body, which is used for curing the box beam, and the device body comprises a bearing mechanism and a spraying mechanism;

[0007] The bearing mechanisms are provided in multiple groups and are arranged in an array along the length direction of the box beam. Each group of bearing mechanisms includes a support frame 1 that can be erected on the outside of the box beam, and a support frame 2 that can enter the cavity provided on the box beam. The bearing mechanisms are provided with a first driving assembly, which is used to drive the multiple groups of bearing mechanisms to move along the length direction of the box beam, and to arrange the multiple groups of bearing mechanisms equidistantly, so that the bearing mechanisms have a stowed state and an unfolded state.

[0008] The spray mechanism is set to multiple groups, each group of spray mechanisms includes a water pipe and a second drive assembly, a plurality of nozzles are arranged on the water pipe along its length direction, the second drive assembly is used to drive the water pipe to rotate around its own axis to increase the spray area of ​​the nozzle, when the spray mechanism is installed on the support frame one, it can spray the outside of the box girder, when the spray mechanism is installed on the support frame two, it can spray the inside of the cavity.

[0009] When the device body is not needed, the bearing mechanism is in a retracted state, which makes it convenient to store the device body. When the device body is needed to maintain the box girder, the bearing mechanism switches to an expanded state, and the outside of the box girder and the inside of the cavity can be evenly sprayed through the spray mechanism, thereby improving the maintenance efficiency and effect. In addition, according to the expansion degree of the bearing mechanism, the device body can be adapted to the maintenance of box girders of different lengths, thereby improving the applicability of the device.

[0010] Preferably, a foldable membrane cloth is installed on the outer side of support frame one. When the supporting mechanism is in a stored state, the membrane cloth is in a folded state. When the supporting mechanism is switched from the stored state to the unfolded state, the membrane cloth can be synchronously unfolded by moving support frame one.

[0011] When the temperature is low, a membrane cloth can be installed on the outside of the support frame. When the bearing mechanism is in the storage state, the membrane cloth is in the folded state. When the bearing mechanism is in the unfolded state, the membrane cloth is unfolded synchronously to cover and wrap the box girder, creating a relatively closed space for the box girder. At this time, the box girder can be steam-cured through the spray mechanism, which improves the applicability of the device.

[0012] Preferably, the water pipes in two adjacent groups of spray mechanisms are connected by telescopic tubes, so that the multiple water pipes installed on support frame one are connected, and the multiple water pipes installed on support frame two are connected, and the length of the telescopic tube can be adapted according to the distance between the two adjacent groups of supporting mechanisms.

[0013] It can ensure the connectivity between multiple water pipes during the unfolding of the bearing mechanism to ensure the spraying maintenance effect on the box girder.

[0014] Preferably, it also includes an adjusting mechanism, which is installed on the supporting mechanism and can adjust the rotation angle of the water pipe according to the expansion degree of the supporting mechanism, so that the spraying areas covered by two adjacent groups of spraying mechanisms are connected.

[0015] The rotation angle of the water pipe can be adjusted so that after the length of the box beam changes, the spraying area of ​​the spray mechanism can still just completely cover the surface of the box beam, avoiding the phenomenon of missed spraying or repeated spraying, and ensuring the spraying effect.

[0016] Preferably, the first drive assembly includes two groups of connecting rod telescopic structures, one group of connecting rod telescopic structures is installed between multiple support frames one, and the other group of connecting rod telescopic structures is installed between multiple support frames two, each group of connecting rod telescopic structures includes a pair of V-shaped connecting rods distributed on both sides and arranged opposite to each other, and a plurality of X-shaped connecting rods located between the two V-shaped connecting rods and distributed in parallel, the connecting rod telescopic structure is arranged horizontally, the middle parts of the two V-shaped connecting rods are respectively hinged to the two support frames one or the two support frames two located on both sides, the middle parts of the plurality of X-shaped connecting rods are respectively hinged to the remaining support frames one or support frames two, and a roller is provided at the lower end of each support frame one and support frame two.

[0017] Preferably, the one installed on the support frame one is defined as the connecting rod telescopic structure one, and the one installed on the support frame two is defined as the connecting rod telescopic structure two, and a plurality of connecting rods are provided between one of the V-shaped connecting rods in the connecting rod telescopic structure one and the V-shaped connecting rod on the same side of the connecting rod telescopic structure two.

[0018] By arranging the connecting rod, when the supporting frame 1 is pulled to be unfolded, the supporting frame 2 can be automatically unfolded under the cooperation of the connecting rod and the connecting rod telescopic structure 2.

[0019] Preferably, the second driving assembly includes a motor, a rotating shaft, a rotating wheel, a driving rod and a rod member. The water pipe is rotatably mounted on support frame one or support frame two, the motor is mounted on support frame one or support frame two, the rotating shaft is connected to the output end of the motor, the rotating wheel is fixedly connected to the end of the rotating shaft, the driving rod is longitudinally arranged, and the end is connected to the corresponding water pipe. A slide groove is provided on the driving rod, and the slide groove is arranged along the length direction of the driving rod. One end of the rod member extends into the slide groove and slides with the slide groove, and the other end is eccentrically connected to the rotating wheel.

[0020] Preferably, the adjustment mechanism includes a second rotating wheel, a second rod and a driving structure. The second rotating wheel is installed on the outside of the rotating shaft. The second rotating wheel can rotate synchronously with the rotating shaft and can slide relative to the rotating shaft along the axial direction of the rotating shaft. A second slide groove is provided on the end face of the first rotating wheel along its radial direction. A slider is provided in the second slide groove for sliding. The end of the first rod is connected to the slider. The second rod is provided between the first rotating wheel and the second rotating wheel. One end of the second rod is hinged to the second rotating wheel, and the other end is hinged to the slider. The driving structure is used to drive the second rotating wheel to move along the axial direction of the rotating shaft.

[0021] Preferably, the driving structure includes a rack, a gear, a screw, a ring and a driving member, the rack is slidably arranged on support frame one or support frame two, the gear is rotatably arranged on support frame one or support frame two, and the gear is meshingly connected with the rack, the end of the screw is connected to the gear, the ring is sleeved on the outside of the screw and cooperates with the screw thread, the ring is rotatably connected to the rotating wheel two, and the driving member is used to drive the rack to move.

[0022] Preferably, the driving member includes a winding roller and a rope, a mounting rod is provided on support frame one or support frame two, the winding roller is rotatably mounted on the mounting rod by a torsion spring, one end of the rope is wound around the outside of the winding roller, and the other end is connected to a rack on another adjacent support frame one or support frame two, and an elastic member is installed on the rack for driving it to reset.

[0023] The beneficial effects of the present invention are:

[0024] 1. The present invention is provided with a bearing mechanism. When the bearing mechanism is in a retracted state, it is convenient for storage. When the box girder is maintained, the first driving assembly drives multiple groups of bearing mechanisms to move, so that the bearing mechanisms are switched to an expanded state. At this time, multiple support frames 1 and multiple support frames 2 are evenly arranged, and the outer side of the box girder and the inside of the cavity can be evenly sprayed by the spraying mechanism. There is no need to manually spray the inside of the cavity, which improves the maintenance efficiency and effect. In addition, according to the expansion degree of the bearing mechanism, the device body can be adapted to the maintenance of box girders of different lengths, thereby improving the applicability of the device.

[0025] 2. The present invention is provided with an adjusting mechanism. When the length of the box beam changes, the length that the bearing mechanism needs to be unfolded changes accordingly. At this time, the rotation angle of the water pipe can be adjusted under the action of the adjusting mechanism to ensure that the spraying area of ​​the spraying mechanism just completely covers the surface of the box beam, avoiding the phenomenon of missed spraying or repeated spraying, and ensuring the spraying effect.

[0026] 3. When the temperature is low, a membrane cloth can be installed on the outside of the support frame. When the bearing mechanism is in the storage state, the membrane cloth is in the folded state. When the bearing mechanism is in the unfolded state, the membrane cloth is unfolded synchronously to cover and wrap the box girder, creating a relatively closed space for the box girder. At this time, the box girder can be steam-cured through the spray mechanism, which improves the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the carrying mechanism of the present invention when it is in the storage state.

[0029] Figure 3It is a schematic diagram of the carrying mechanism of the present invention when it is in an unfolded state.

[0030] Figure 4 It is a schematic diagram of the assembly structure of the spray mechanism and the supporting frame 2 of the present invention.

[0031] Figure 5 It is a schematic diagram of the assembly structure of two adjacent support frames 2 of the present invention.

[0032] Figure 6 It is a schematic diagram of the assembly structure of the second driving component and the second supporting frame of the present invention.

[0033] Figure 7 It is a partial structural schematic diagram of the regulating mechanism of the present invention.

[0034] Figure 8 It is a schematic diagram of the assembly structure of the second driving component and the adjusting mechanism of the present invention.

[0035] Reference numerals:

[0036] 1. Box beam; 11. Cavity; 2. Bearing mechanism; 21. Support frame 1; 22. Support frame 2; 23. V-shaped connecting rod; 24. X-shaped connecting rod; 25. Roller; 26. Connecting rod; 3. Spraying mechanism; 31. Water pipe; 311. Nozzle; 32. Telescopic tube; 33. Motor; 34. Rotating shaft; 35. Rotating wheel 1; 351. Slide groove 2; 352. Sliding block; 36. Driving rod; 361. Slide groove 1; 37. Rod member 1; 4. Adjusting mechanism; 41. Rotating wheel 2; 42. Rod member 2; 43. Rack; 44. Gear; 45. Screw; 46. Ring; 47. Winding roller; 471. Mounting rod; 48. Rope; 49. Elastic member. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figures 1 to 8 As shown, a prefabricated box beam curing device of the present invention includes a device body for curing a box beam 1 , and the device body includes a bearing mechanism 2 and a spray mechanism 3 .

[0039] The bearing mechanisms 2 are provided in multiple groups and are arranged in an array along the length direction of the box beam 1. Each group of bearing mechanisms 2 includes a support frame 21 that can be erected on the outside of the box beam 1, and a support frame 2 22 that can enter the cavity 11 provided on the box beam 1. A first driving component is provided on the bearing mechanism 2. The first driving component is used to drive the multiple groups of bearing mechanisms 2 to move along the length direction of the box beam 1, and arrange the multiple groups of bearing mechanisms 2 at equal intervals, so that the bearing mechanism 2 has a stowed state and an unfolded state.

[0040] The spray mechanism 3 is arranged in multiple groups, each group of the spray mechanism 3 comprises a water pipe 31 and a second driving assembly, a plurality of nozzles 311 are arranged on the water pipe 31 along its length direction, the second driving assembly is used to drive the water pipe 31 to rotate around its own axis to increase the spraying area of ​​the nozzle 311, when the spray mechanism 3 is installed on the support frame 1 21, it can spray the outside of the box girder 1, when the spray mechanism 3 is installed on the support frame 2 22, it can spray the inside of the cavity 11.

[0041] Specifically, Figures 1 to 8 As shown, when the box girder 1 needs to be maintained, the device body is moved to one side of the box girder 1, and then the first driving component is used to drive the multiple groups of bearing mechanisms 2 to move along the length direction of the box girder 1, so that the multiple support frames 21 are arranged equidistantly along the length of the box girder 1 on the outside of the box girder 1, and the multiple support frames 22 are arranged equidistantly along the length of the box girder 1 inside the cavity 11 provided on the box girder 1, and the spraying mechanism 3 is started, and the water flows through the water pipe 31 and is sprayed outward from the nozzle 311 provided on the water pipe 31. In this process, the outer side of the box girder 1 can be sprayed by the spraying mechanism 3 installed on the support frame 1 21, and the inside of the cavity 11 on the box girder 1 can be sprayed by the spraying mechanism 3 installed on the support frame 2 22. After the spraying is completed, the multiple groups of bearing mechanisms 2 are driven by the first driving component to move in the opposite direction along the length direction of the box girder 1 until the bearing mechanisms 2 are in the storage state, thereby realizing the maintenance process of the box girder 1.

[0042] In some embodiments, a foldable membrane cloth is installed on the outer side of the support frame 21. When the supporting mechanism 2 is in a stored state, the membrane cloth is in a folded state. When the supporting mechanism 2 is switched from the stored state to the unfolded state, the membrane cloth can be synchronously unfolded by moving the support frame 21.

[0043] Specifically, Figures 1 to 3As shown, when the weather temperature is high, the box girder 1 can be spray-cured by the cooperation of the bearing mechanism 2 and the spray mechanism 3; when the weather temperature is low, the box girder 1 needs to be steam-cured, and the membrane cloth is installed on the outside of the support frame 21, and the membrane cloth is unfolded by moving the support frame 21 so that the membrane cloth can cover the outside of the box girder 1, shielding and wrapping the box girder 1 to create a relatively closed space for the box girder 1. At this time, the steam generator is started, and steam is introduced into the water pipe 31. The steam can be sprayed outward from the nozzle 311 to steam-cured the box girder 1. By setting the membrane cloth, the applicability of the device body can be improved. Installing the membrane cloth on the support frame 21 is conducive to unfolding the membrane cloth, and there is no need to manually unfold the membrane cloth, thereby reducing labor intensity.

[0044] In some embodiments, the water pipes 31 in two adjacent groups of spray mechanisms 3 are connected by telescopic tubes 32, so that the multiple water pipes 31 installed on the support frame 1 21 are connected, and the multiple water pipes 31 installed on the support frame 2 22 are connected, and the length of the telescopic tube 32 can be adapted according to the distance between the two adjacent groups of supporting mechanisms 2.

[0045] Specifically, Figures 1 to 5 As shown, in this embodiment, two adjacent telescopic tubes 32 are respectively installed at the two ends of the water pipe 31, so that after the water pump is started, the water flow will enter the water pipe 31 and flow in an S shape, so that the water flow can enter multiple water pipes 31 in turn and maintain sufficient water flow in each water pipe 31 to ensure the spray maintenance effect of the box girder 1.

[0046] In some embodiments, the first drive assembly includes two groups of connecting rod telescopic structures, one group of connecting rod telescopic structures is installed between multiple support frames 1 21, and the other group of connecting rod telescopic structures is installed between multiple support frames 22. Each group of connecting rod telescopic structures includes a pair of V-shaped connecting rods 23 distributed on both sides and arranged opposite to each other, and a plurality of X-shaped connecting rods 24 located between the two V-shaped connecting rods 23 and distributed in parallel. The connecting rod telescopic structure is arranged horizontally, and the middle parts of the two V-shaped connecting rods 23 are respectively hinged to the two support frames 1 21 or support frames 22 located on both sides, and the middle parts of the plurality of X-shaped connecting rods 24 are respectively hinged to the remaining support frames 1 21 or support frames 22, and a roller 25 is provided at the lower end of each support frame 1 21 and support frame 22.

[0047] Specifically, Figures 1 to 5As shown, when the box girder 1 needs to be maintained, the device body is pushed, and under the action of the roller 25 under the support frame 21, the device body is moved to one side of the box girder 1. In this embodiment, the device body is placed on the rear side of the box girder 1, and the support frame 21 located at the rear side of the bearing mechanism 2 is fixed, and then the support frame 21 located at the front side is pulled to move along the length direction of the box girder 1, so that the connecting rod telescopic structure installed on the support frame 21 can be stretched to adjust the length of the connecting rod telescopic structure. When the connecting rod telescopic structure is pulled open, it can drive multiple support frames 21 hinged to the connecting rod telescopic structure to move along the length direction of the box girder 1 until the front side support frame 21 moves to the front side of the box girder 1. At this time, multiple support frames 21 are arranged equidistantly along the length of the box girder 1. When the water pump is started, the outer side of the box girder 1 can be evenly sprayed through the spraying mechanism 3 installed on the support frame 21.

[0048] In some embodiments, a plurality of connecting rods 26 are provided between the V-shaped connecting rods 23 on the same side of the two sets of connecting rod telescopic structures respectively installed on the support frame 1 21 and the support frame 2 22 .

[0049] Specifically, Figures 1 to 4As shown, in this embodiment, it is defined that the connecting rod telescopic structure 1 is installed on the support frame 1 21, and the connecting rod telescopic structure 2 is installed on the support frame 22. The connecting rod 26 is connected between the V-shaped connecting rod 23 located at the rear side in the connecting rod telescopic structure 1 and the V-shaped connecting rod 23 located at the rear side in the connecting rod telescopic structure 2. When the device body is moved to the rear side of the box beam 1 and pushed in the direction close to the box beam 1, the supporting frame 1 21 can be erected on the outer side of the box beam 1, and the supporting frame 2 22 can enter the cavity 11 set on the box beam 1. When the bearing mechanism 2 is switched from the storage state to the deployment state, the rearmost supporting frame 1 21 in the connecting rod telescopic structure 1 is fixed, and the frontmost supporting frame 1 21 is pulled to move, so that the connecting rod telescopic structure 1 can be pulled apart, so that the distance between the two adjacent supporting frames 1 21 becomes larger. As the connecting rod telescopic structure 1 is pulled apart, the angle between the two ends of the V-shaped connecting rod 23 located at the rear side in the connecting rod telescopic structure 1 will change, and Under the action of the rod 26, the V-shaped connecting rod 23 located at the rear side of the connecting rod telescopic structure 2 is driven to change synchronously. Through the change of this V-shaped connecting rod 23, the connecting rod telescopic structure 2 will be pushed to expand, so that the connecting rod telescopic structure 2 is gradually pulled apart along the length direction of the box beam 1, driving multiple support frames 22 to gradually move along the length direction of the box beam 1 in the cavity 11 until the frontmost support frame 1 21 stops moving. At this time, multiple support frames 1 21 and multiple support frames 2 22 are arranged equidistantly along the length of the box beam 1. Starting the water pump can spray the outer side of the box beam 1 through the spray mechanism 3 installed on the support frame 1 21, and at the same time, the cavity 11 of the box beam 1 is sprayed through the spray mechanism 3 installed on the support frame 2 22, thereby improving the maintenance effect of the box beam 1, and solving the problem that the maintenance device in the related art is not convenient to enter the cavity 11 of the box beam 1, and the staff needs to manually lay pipes in the cavity 11 for spraying, which makes it inconvenient to maintain the cavity 11 on the box beam 1.

[0050] In some embodiments, the second driving assembly includes a motor 33, a rotating shaft 34, a rotating wheel 35, a driving rod 36 and a rod member 37. The spray mechanism 3 is installed on the support frame 22 as an example for description. The water pipe 31 is rotatably installed on the support frame 22, the motor 33 is installed on the support frame 22, the rotating shaft 34 is connected to the output end of the motor 33, the rotating wheel 35 is fixedly connected to the end of the rotating shaft 34, the driving rod 36 is longitudinally arranged, and the end is connected to the corresponding water pipe 31. A slide groove 361 is provided on the driving rod 36, and the slide groove 361 is arranged along the length direction of the driving rod 36. One end of the rod member 37 extends into the slide groove 361 and slides with the slide groove 361. The other end is eccentrically connected to the rotating wheel 35.

[0051] Specifically, Figures 1 to 8As shown, starting the motor 33 can drive the rotating shaft 34 to rotate, and drive the rotating wheel 35 connected to the rotating shaft 34 to rotate. Due to the eccentric connection between the rod 37 and the rotating wheel 35, the rod 37 will make a circular motion around the axis of the rotating wheel 35. In this process, the circular motion of the rod 37 can be converted into a swinging motion of the driving rod 36 through the sliding cooperation between the rod 37 and the driving rod 36, so that the end of the driving rod 36 away from the water pipe 31 swings around the axis of the water pipe 31, and drives the water pipe 31 to rotate around its own axis, so that the direction of the nozzle 311 on the water pipe 31 changes continuously, thereby increasing the spraying area of ​​the nozzle 311 and ensuring uniform spraying.

[0052] When maintaining box beams 1 of different lengths, the extent to which the bearing mechanism 2 needs to be expanded is different, so that the distance between two adjacent support frames 1 21 or two adjacent support frames 2 22 is different. If the rotation angle of the water pipe 31 remains unchanged at this time, the spraying area that can be covered by the spraying mechanism 3 will be inconsistent with the area that needs to be sprayed on the box beam 1, that is, there will be a gap between the spraying areas that can be covered by two adjacent water pipes 31, resulting in part of the box beam 1 not being effectively maintained, or the spraying areas that can be covered by two adjacent water pipes 31 will overlap, resulting in part of the box beam 1 being over-sprayed, affecting the uniformity of the spraying. Therefore, if Figures 1 to 7 As shown, in some embodiments, an adjusting mechanism 4 is also installed on the supporting mechanism 2. The adjusting mechanism 4 can adjust the rotation angle of the water pipe 31 according to the expansion degree of the supporting mechanism 2, so that the spraying areas covered by two adjacent groups of spraying mechanisms 3 are connected, avoiding the phenomenon of missing spraying or over-spraying, and ensuring the maintenance effect of the box girder 1.

[0053] In some embodiments, the adjustment mechanism 4 includes a rotating wheel 41, a rod 42 and a driving structure. The rotating wheel 41 is installed on the outer side of the rotating shaft 34. The rotating wheel 41 can rotate synchronously with the rotating shaft 34 and can slide relative to the rotating shaft 34 along the axial direction of the rotating shaft 34. A sliding groove 351 is provided on the end face of the rotating wheel 35 along its radial direction. A sliding block 352 is slidingly provided in the sliding groove 351. The end of the rod 37 is connected to the sliding block 352. The rod 42 is provided between the rotating wheel 35 and the rotating wheel 41. One end of the rod 42 is hinged to the rotating wheel 41, and the other end is hinged to the sliding block 352. The driving structure is used to drive the rotating wheel 41 to move along the axial direction of the rotating shaft 34.

[0054] Specifically, Figure 1 , Figures 5 to 8As shown, starting the motor 33 can drive the rotating shaft 34 to rotate, and drive the runner 1 35 and the runner 2 41 to rotate synchronously. When the rotation angle of the water pipe 31 needs to be adjusted, the runner 2 41 is driven by the driving structure to move along the axial direction of the rotating shaft 34. When the runner 2 41 gradually approaches the runner 1 35, under the action of the rod 2 42, the slider 352 moves along the slide groove 2 351 in the direction away from the axis of the runner 1 35, and drives the rod 1 37 to move, so that the eccentricity of the connection point between the rod 1 37 and the runner 1 35 increases. At this time, as the runner 1 35 rotates, the swing amplitude of the driving rod 36 increases, that is, the angle at which the water pipe 31 can rotate increases, thereby increasing the spraying area that the water pipe 31 can cover; when the runner 2 41 gradually moves away from the runner When the wheel 1 is in the state of being rotated, the slider 352 will move along the slide groove 351 towards the axis of the runner 1 35 under the action of the rod 2 42, and drive the rod 1 37 to move, so that the eccentricity of the connection point between the rod 1 37 and the runner 1 35 is reduced. At this time, with the rotation of the runner 1 35, the swing amplitude of the driving rod 36 will be reduced, that is, the angle at which the water pipe 31 can rotate will be reduced, thereby reducing the spraying area that the water pipe 31 can cover. Therefore, when maintaining box girders 1 of different lengths, the degree of expansion of the bearing mechanism 2 will be different. At this time, the rotation angle of the water pipe 31 can be adjusted according to the distance between the two adjacent groups of bearing mechanisms 2, so that the spraying areas covered by the two adjacent water pipes 31 are just connected, so that the box girder 1 can be sprayed completely and without overlap.

[0055] In some embodiments, the driving structure includes a rack 43, a gear 44, a screw 45, a ring 46 and a driving member. The adjustment mechanism 4 is installed on the support frame 22 as an example for description. The rack 43 is slidably arranged on the support frame 22, the gear 44 is rotatably arranged on the support frame 22, and the gear 44 is meshingly connected with the rack 43. The end of the screw 45 is connected to the gear 44. The ring 46 is sleeved on the outside of the screw 45 and threadedly matched with the screw 45. The ring 46 is rotatably connected to the rotating wheel 241, and the driving member is used to drive the rack 43 to move.

[0056] Specifically, Figure 1 , Figures 5 to 8 As shown, when the rack 43 is driven to move by the driving member, the gear 44 can be driven to rotate under the meshing transmission of the rack 43 and the gear 44, and the screw 45 connected to the gear 44 can be driven to rotate. At this time, through the threaded cooperation between the screw 45 and the ring 46, the ring 46 can be driven to move along the axial direction of the screw 45, and the wheel 2 41 can be driven to move along the axial direction of the shaft 34, so that the wheel 2 41 moves toward or away from the wheel 1 35, and the rotation angle of the water pipe 31 is adjusted.

[0057] In some embodiments, the driving member includes a winding roller 47 and a rope 48. The adjustment mechanism 4 is installed on the support frame 22 as an example for description. A mounting rod 471 is provided on the support frame 22. The winding roller 47 is rotatably installed on the mounting rod 471 through a torsion spring. One end of the rope 48 is wound on the outside of the winding roller 47, and the other end is connected to the rack 43 on another adjacent support frame 22. An elastic member 49 is installed on the rack 43 for driving it to reset. The elastic member 49 can be set as a spring.

[0058] Specifically, Figures 1 to 8 As shown, in the initial state, the supporting mechanism 2 is in the stored state, at which time several turns of rope 48 are wound on the outer side of the winding roller 47. When the supporting mechanism 2 is gradually switched to the unfolded state, taking the support frame 21 as an example, the distance between the two adjacent support frames 21 will increase, that is, the distance between each winding roller 47 and the rack 43 on the support frame 21 adjacent to the rear side will increase. At this time, the winding roller 47 will rotate to release the line, and the torsion spring will twist to store force, so that the rope 48 adapts to the distance between the two adjacent support frames 21. In this process, the rack 43 remains stationary under the action of the elastic member 49 until the rope 48 on the outer side of the winding roller 47 is completely released. The unfolded length of the supporting mechanism 2 at this time is set to the set length. At this time, the slider 352 is at one end of the slide groove 351 close to the axis of the rotating wheel 35, so that the eccentricity between the rod 37 and the rotating wheel 35 is minimized, that is, the angle at which the water pipe 31 can rotate is minimized. If the supporting mechanism 2 continues to unfold at this time, the two adjacent As the distance between the support frames 21 continues to increase, the front support frame 21 gradually moves away from the adjacent support frame 21 on the rear side, which will drive the winding roller 47 to gradually move away from the rack 43 on the adjacent support frame 21 on the rear side. Since the rope 48 has been completely released at this time, the winding roller 47 moves while pulling the rack 43 through the rope 48. At this time, under the action of the adjusting mechanism 4, the distance between the rotating wheel 2 41 and the rotating wheel 1 35 is reduced, so that the slider 352 moves along the slide groove 2 351 in the direction away from the axis of the rotating wheel 1 35, so that the eccentricity between the rod 1 37 and the rotating wheel 1 35 increases, and the angle at which the water pipe 31 can rotate increases, so that the spraying area that the water pipe 31 can cover increases, that is, as the length of the box girder 1 increases, the length of the support mechanism 2 increases accordingly, and the angle at which each water pipe 31 can rotate increases accordingly, ensuring that the spraying area of ​​the spraying mechanism 3 can always just cover the surface of the box girder 1, thereby ensuring the maintenance effect of the box girder 1.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A prefabricated box beam maintenance device, comprising a device body, used for maintaining the box beam, characterized in that: The device body includes a bearing mechanism, a spraying mechanism and an adjusting mechanism; The bearing mechanisms are provided in multiple groups and are arranged in an array along the length direction of the box beam. Each group of bearing mechanisms includes a support frame 1 that can be erected on the outside of the box beam, and a support frame 2 that can enter the cavity provided on the box beam. The bearing mechanisms are provided with a first driving assembly, which is used to drive the multiple groups of bearing mechanisms to move along the length direction of the box beam, and to arrange the multiple groups of bearing mechanisms equidistantly, so that the bearing mechanisms have a stowed state and an unfolded state. The spray mechanism is provided in multiple groups, each of which includes a water pipe and a second driving assembly. The water pipe is provided with multiple nozzles along its length direction. The second driving assembly is used to drive the water pipe to rotate around its own axis to increase the spraying area of ​​the nozzle. When the spray mechanism is installed on the first support frame, the outer side of the box girder can be sprayed. When the spray mechanism is installed on the second support frame, the inside of the cavity can be sprayed. The water pipes in two adjacent groups of spray mechanisms are connected by telescopic pipes, so that the multiple water pipes installed on the first support frame are connected, and the multiple water pipes installed on the second support frame are connected. The length of the telescopic pipe can be adapted according to the distance between the two adjacent groups of bearing mechanisms. The second driving assembly includes a motor, a rotating shaft, a rotating wheel 1, a driving rod and a rod member 1. The water pipe is rotatably mounted on the supporting frame 1 or the supporting frame 2. The motor is mounted on the supporting frame 1 or the supporting frame 2. The rotating shaft is connected to the output end of the motor. The rotating wheel 1 is fixedly connected to the end of the rotating shaft. The driving rod is longitudinally arranged, and the end is connected to the corresponding water pipe. The driving rod is provided with a slide groove 1, which is arranged along the length direction of the driving rod. One end of the rod member 1 extends into the slide groove 1 and slides with the slide groove 1. The other end is eccentrically connected to the rotating wheel 1. The adjusting mechanism is installed on the carrying mechanism, and can adjust the rotation angle of the water pipe according to the expansion degree of the carrying mechanism, so that the spraying areas covered by two adjacent groups of spraying mechanisms are butted.

2. A prefabricated box beam maintenance device according to claim 1, characterized in that: A foldable membrane cloth is installed on the outer side of the support frame 1. When the supporting mechanism is in a stored state, the membrane cloth is in a folded state. When the supporting mechanism switches from the stored state to the unfolded state, the membrane cloth can be synchronously unfolded by moving the support frame 1.

3. The prefabricated box beam maintenance device according to claim 1, characterized in that: The first driving assembly includes two groups of connecting rod telescopic structures, one group of connecting rod telescopic structures is installed between multiple support frames one, and the other group of connecting rod telescopic structures is installed between multiple support frames two, each group of connecting rod telescopic structures includes a pair of V-shaped connecting rods distributed on both sides and arranged opposite to each other, and a plurality of X-shaped connecting rods located between the two V-shaped connecting rods and distributed in parallel, the connecting rod telescopic structure is arranged horizontally, the middle parts of the two V-shaped connecting rods are respectively hinged to the two support frames one or the two support frames two located on both sides, the middle parts of the plurality of X-shaped connecting rods are respectively hinged to the remaining support frames one or support frames two, and the lower end of each support frame one and support frame two is provided with a roller.

4. A prefabricated box beam maintenance device according to claim 3, characterized in that: It is defined that the connecting rod telescopic structure 1 is installed on the support frame 1, and the connecting rod telescopic structure 2 is installed on the support frame 2. Multiple connecting rods are arranged between one of the V-shaped connecting rods in the connecting rod telescopic structure 1 and the V-shaped connecting rod on the same side of the connecting rod telescopic structure 2.

5. The prefabricated box beam maintenance device according to claim 4, characterized in that: The adjusting mechanism comprises a second rotating wheel, a second rod and a driving structure. The second rotating wheel is installed on the outer side of the rotating shaft. The second rotating wheel can rotate synchronously with the rotating shaft and can slide relative to the rotating shaft along the axial direction of the rotating shaft. A second sliding groove is provided on the end face of the first rotating wheel along its radial direction. A sliding block is provided in the second sliding groove for sliding. The end of the first rod is connected to the sliding block. The second rod is arranged between the first rotating wheel and the second rotating wheel. One end of the second rod is hinged to the second rotating wheel, and the other end is hinged to the sliding block. The driving structure is used to drive the second rotating wheel to move along the axial direction of the rotating shaft.

6. The prefabricated box beam maintenance device according to claim 5, characterized in that: The driving structure includes a rack, a gear, a screw, a ring and a driving member. The rack is slidably arranged on support frame one or support frame two, the gear is rotatably arranged on support frame one or support frame two, and the gear is meshingly connected with the rack, the end of the screw is connected to the gear, the ring is sleeved on the outside of the screw and cooperates with the screw thread, the ring is rotatably connected to the second rotating wheel, and the driving member is used to drive the rack to move.

7. The prefabricated box beam maintenance device according to claim 6, characterized in that: The driving member includes a winding roller and a rope. A mounting rod is provided on support frame one or support frame two. The winding roller is rotatably mounted on the mounting rod through a torsion spring. One end of the rope is wound on the outside of the winding roller, and the other end is connected to a rack on another adjacent support frame one or support frame two. An elastic member is installed on the rack to drive it to reset.

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