CN116815650A - Precast box girder transverse movement construction method and construction system - Google Patents
Precast box girder transverse movement construction method and construction system Download PDFInfo
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- CN116815650A CN116815650A CN202310874976.0A CN202310874976A CN116815650A CN 116815650 A CN116815650 A CN 116815650A CN 202310874976 A CN202310874976 A CN 202310874976A CN 116815650 A CN116815650 A CN 116815650A
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- 238000010276 construction Methods 0.000 title claims abstract description 52
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- 238000009434 installation Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
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Abstract
The invention relates to the technical field of precast box girder transverse movement construction operation, in particular to a precast box girder transverse movement construction system, which comprises sliding platforms and track assemblies, wherein the track assemblies are arranged in a crisscross manner, the two sliding platforms are matched with each other to transport precast box girders along the longitudinal and transverse walking of the track assemblies, and each sliding platform comprises a supporting assembly, a limiting assembly, a longitudinal movement assembly and a transverse movement assembly; two groups of limiting assemblies are symmetrically arranged on the upper part of the supporting assembly, and the two groups of limiting assemblies are respectively and movably connected with two ends of the supporting assembly; the upper end of the longitudinal moving assembly is fixedly connected with the bottom of the supporting assembly through a hydraulic telescopic structure, and the longitudinal moving assembly longitudinally slides back and forth along the track assembly through a first pulley; two groups of transverse moving assemblies are respectively arranged at two ends of the lower part of the supporting assembly, the upper ends of the transverse moving assemblies are fixedly connected with the bottoms of the two ends of the supporting assembly through hydraulic telescopic structures, and the transverse moving assemblies transversely slide left and right along the track assembly through second pulleys; the construction system can effectively reduce construction cost and time and ensure efficient transportation of the prefabricated box girder.
Description
Technical Field
The invention relates to the technical field of transverse movement construction operation of prefabricated box girders, in particular to a transverse movement construction method and a transverse movement construction system of prefabricated box girders.
Background
The box girder is one of the middle girders of bridge engineering, flanges are arranged on two sides of the upper part, a reinforced concrete structure is generally adopted, the box girder is good in transverse bending resistance and torsion resistance, safe and stable in structure, and is widely applied to bridge engineering at present, and is mainly used for large-span or bearing structures, the prefabricated box girder is generally prefabricated on an independent site, then is transported to a transfer storage site for storage, and is transported to an engineering site for erection from the transfer storage site during use, and the large-volume prefabricated box girder is transported to the transfer storage site after being manufactured from the prefabrication site, and is required to be transported by a special portal crane, so that the corresponding cost is high, time and labor are wasted.
Accordingly, the present invention provides a transverse moving construction method and system for prefabricated box girders, which are used for solving the above problems.
Disclosure of Invention
Aiming at the problems, the invention provides a transverse moving construction method and a transverse moving construction system for a prefabricated box girder, which can effectively reduce construction cost and time and ensure high-efficiency transportation of the prefabricated box girder.
The invention solves the technical problems by adopting the technical scheme that:
the transverse moving construction system for the prefabricated box girder comprises sliding platforms and a track assembly, wherein the track assembly is arranged in a crisscross manner, the two sliding platforms are matched with each other to transport the prefabricated box girder along the longitudinal and transverse moving direction of the track assembly, and the sliding platforms comprise supporting assemblies, limiting assemblies, longitudinal moving assemblies and transverse moving assemblies; two groups of limiting assemblies are symmetrically arranged on the upper part of the supporting assembly, and the two groups of limiting assemblies are respectively and movably connected with two ends of the supporting assembly; the upper end of the longitudinal moving assembly is fixedly connected with the bottom of the supporting assembly through a hydraulic telescopic structure, and the longitudinal moving assembly longitudinally slides back and forth along the track assembly through a first pulley; two groups of transverse moving assemblies are respectively arranged at two ends of the lower part of the supporting assembly, the upper ends of the transverse moving assemblies are fixedly connected with the bottoms of the two ends of the supporting assembly through hydraulic telescopic structures, and the transverse moving assemblies transversely slide left and right along the track assemblies through second pulleys.
In an alternative embodiment, the support assembly includes a baffle, a support seat and a support plate, and a first hydraulic cylinder; two baffle plates are vertically and symmetrically arranged on two sides of the supporting seat, two sides of the supporting seat extend outwards horizontally, the middle part of the supporting seat is sunken downwards to form a space for accommodating the first hydraulic cylinder, and two ends, close to the sunken space, of the middle part of the supporting seat are respectively provided with a fixed plate; the supporting plate is positioned above the supporting seat and is in sliding connection with the supporting seat, and the upper surface of the supporting plate is abutted with the prefabricated box girder; the first hydraulic cylinder body end is fixedly connected with the supporting seat, and the first hydraulic cylinder piston end is fixedly connected with the supporting plate.
In an alternative embodiment, indulge and move the subassembly and include second pneumatic cylinder and first removal seat, the second pneumatic cylinder is vertical to be set up a plurality of, and a plurality of second pneumatic cylinders are along controlling the direction interval equipartition setting, second pneumatic cylinder body end and supporting seat fixed connection, second pneumatic cylinder piston end and first removal seat upper surface fixed connection, first removal seat lower part sets up logical groove, leads to the groove both ends to set up first pulley shaft respectively, and first removal seat is rotated with first pulley through first pulley shaft and is connected.
In an alternative embodiment, the traversing assembly includes a third hydraulic cylinder and a second traveling block; the cylinder body end of the third hydraulic cylinder is fixedly connected with the bottom of one side of the support seat extending outwards horizontally, the piston end of the third hydraulic cylinder is fixedly connected with the upper surface of the second movable seat, the two ends of the second movable seat are respectively provided with a second pulley shaft, and the second movable seat is rotationally connected with the second pulley through the second pulley shafts.
In an alternative embodiment, the limiting assembly comprises a limiting plate, a sliding piece, a screw rod and a telescopic rod; one side, close to the supporting seat, of the limiting plate is abutted against the prefabricated box girder, the other side of the limiting plate is rotationally connected with the telescopic rod cylinder body end, and the telescopic rod telescopic end is rotationally connected with the baffle plate; the sliding piece is hinged with the limiting plate, and the lower part of the sliding piece is connected with the upper surface of the supporting seat in a sliding way; one end of the screw rod is rotationally connected with the baffle, the other end of the screw rod penetrates through the sliding piece and then is rotationally connected with the fixed plate, and the screw rod is in threaded connection with the sliding piece.
In an alternative embodiment, the track assembly comprises a longitudinal track and a transverse track, the longitudinal track comprising a longitudinal track plate and a longitudinal rail, the longitudinal track being perpendicular to the transverse track; the transverse rail comprises a transverse rail plate and a transverse guide rail.
In an alternative embodiment, the longitudinal rails and the transverse rails are arranged in parallel in two groups, the two groups of longitudinal rails and the transverse rails are arranged in a groined shape, each group of longitudinal rails comprises two longitudinal rails, each group of transverse rails comprises two transverse rails, each longitudinal rail is connected with a first pulley, and each transverse rail is connected with a second pulley.
The invention also provides a precast box girder traversing construction method adopting the precast box girder traversing construction system, which comprises the following steps:
s1: respectively placing two ends of the prefabricated box girder above the supporting plates of the two sliding platforms in the same group at the prefabricated place, so that the two sliding platforms in the same group are respectively positioned at the same distance at the two ends of the prefabricated box girder;
s2: starting the limiting assembly to enable the sliding assembly to move until the distance between the two groups of limiting assemblies is suitable for the width of the bottom plate of the prefabricated box girder, and enabling the telescopic rod to act to drive the limiting plate to rotate until the limiting plate is attached to the web plate of the prefabricated box girder;
s3: starting the transverse moving assembly to separate the second pulley from the transverse guide rail, and moving and transporting the prefabricated box girder to a transit storage place along the longitudinal guide rail by the first pulley along the longitudinal guide rail;
s4: repeating the steps S1-S3, and moving a plurality of prefabricated box girders to a transfer storage place through a plurality of groups of sliding platforms;
s5: when the prefabricated box girder is required to be hoisted to a construction site, starting the supporting component to drive the supporting plate to ascend, and ejecting the prefabricated box girder upwards, so that constructors can conveniently hoist the prefabricated box girder to the construction site for installation through hoisting equipment, and at the moment, each group of two sliding platforms are empty;
s6: starting the transverse moving assembly until the second pulley is abutted with the transverse guide rail; starting the longitudinal moving assembly again to enable the first moving seat to ascend, so that the first pulley is separated from the longitudinal guide rail, and the sliding platform moves rightwards along the transverse guide rail to the joint of the longitudinal rail and the transverse rail;
s7: starting the supporting component to restore the supporting board to the initial position; starting the longitudinal moving assembly to enable the first moving seat to descend, so that the first pulley is abutted with the longitudinal guide rail; starting the transverse moving assembly again to enable the second moving seat to ascend, so that the second pulley is separated from the transverse guide rail, and the sliding platform moves forwards along the longitudinal guide rail to the joint of the longitudinal rail and the transverse rail;
s8: starting the transverse moving assembly to enable the second moving seat to descend, so that the second pulley is abutted with the transverse guide rail; starting the longitudinal moving assembly again to drive the first moving seat to ascend, so that the first pulley is separated from the longitudinal guide rail; the sliding platform moves forwards along the longitudinal guide rail to the junction of the longitudinal rail and the transverse rail;
s9: and (6) repeating the steps (S6-S8) to enable the plurality of empty sliding platforms to return to the prefabricated place for recycling.
Compared with the prior art, the invention has the beneficial effects that:
according to the transverse moving construction system for the prefabricated box girder, the prefabricated box girder is transported by matching the sliding platform and the track assembly, so that the construction cost of dispatching by adopting a special gantry crane can be reduced, and the high-efficiency transportation of the prefabricated box girder can be ensured; the sliding platform ensures that the prefabricated box girder is stably fixed in the transportation process through the supporting component and the limiting component, and meets the safety and reliability in girder moving; the sliding platform can be matched with the track assembly through the longitudinal moving assembly and the transverse moving assembly, so that stable movement and reversing of the sliding platform are realized, and construction cost and time are reduced.
The invention also provides a precast box girder traversing construction method adopting the precast box girder traversing construction system, the precast box girders meeting the design requirement are moved by matching the sliding platforms and the track components, in the precast box girder traversing construction system, a plurality of sliding platforms can be arranged, each precast box girder and the matched sliding platform are directly arranged at a transit storage place, when the precast box girders positioned at the transit storage place are used, the empty sliding platform can be reversed through the track components and transported to the precast place for reuse, the method can recycle and transport the precast box girders, greatly reduce construction cost and time, and improve construction efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a schematic view of a cross-conveyor box girder structure according to an embodiment of the present invention;
FIG. 2 is a schematic plan view of a vertically and horizontally moving transport beam according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a cross-sectional structure in the front direction according to an embodiment of the present invention;
fig. 5 is a partially exploded view of a supporting component and a limiting component according to an embodiment of the present invention.
Reference numerals illustrate:
1. a support assembly; 11. a baffle; 111. a chute; 12. a support base; 121. a fixing plate; 13. a support plate; 14. a first hydraulic cylinder; 15. a support column; 16. a first hinge support; 2. a limit component; 21. a limiting plate; 211. a connecting lug; 22. a sliding member; 221. a connecting shaft; 222. a slide block; 23. a motor; 24. a screw rod; 25. a telescopic rod; 26. a second hinge support; 3. a longitudinally moving component; 31. a second hydraulic cylinder; 32. a first movable seat; 321. a first pulley shaft; 33. a first pulley; 4. a traversing assembly; 41. a third hydraulic cylinder; 42. a second movable seat; 421. a second pulley shaft; 43. a second pulley; 5. prefabricating box girders; 6. a track assembly; 61. a longitudinal rail; 611. a longitudinal rail plate; 612. a longitudinal guide rail; 62. a transverse rail; 621. a transverse track plate; 622. and a transverse guide rail.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connected" merely means a connection between devices and is not of special significance.
1-5, the invention provides a precast box girder traversing construction system, which comprises a sliding platform and a track assembly 6, wherein the track assembly 6 is arranged in a crisscross manner, the two sliding platforms are matched with each other to transport precast box girders 5 along the track assembly 6 in a crisscross manner, and the sliding platform comprises a supporting assembly 1, a limiting assembly 2, a longitudinal moving assembly 3 and a traversing assembly 4; the upper part of the supporting component 1 is provided with two groups of limiting components 2, and the two groups of limiting components 2 are symmetrically arranged and are respectively and movably connected with the two ends of the supporting component 1; the longitudinal moving assembly 3 is arranged in the middle of the lower part of the supporting assembly 1, the upper end of the longitudinal moving assembly 3 is fixedly connected with the bottom of the supporting assembly 1 through a hydraulic telescopic structure, and the longitudinal moving assembly 3 longitudinally slides back and forth along the track assembly 6 through a first pulley 33; the two groups of the transverse moving assemblies 4 are arranged, the two groups of the transverse moving assemblies 4 are respectively arranged at two ends of the lower portion of the supporting assembly 1, the upper ends of the transverse moving assemblies 4 are fixedly connected with the bottoms of the two ends of the supporting assembly 1 through hydraulic telescopic structures, and the transverse moving assemblies 4 transversely slide leftwards and rightwards along the track assemblies 6 through second pulleys 43.
Preferably, the sliding platforms are used in groups of two pairs, the sliding platforms are placed at intervals front and back, and two ends of the prefabricated box girder 5 are respectively placed on the two sliding platforms.
The track assembly 6 comprises a longitudinal track 61 and a transverse track 62, the longitudinal track 61 comprising a longitudinal track plate 611 and a longitudinal rail 612, the longitudinal track 61 being perpendicular to the transverse track 62; the transverse rail 62 includes a transverse rail plate 621 and a transverse rail 622, both the longitudinal rail 612 and the transverse rail 622 may be i-shaped steel, the longitudinal rail 612 is welded along a central position on the longitudinal rail plate 611, the transverse rail 622 is welded along a central position on the transverse rail plate 621, and the junction between the longitudinal rail plate 611 and the transverse rail plate 621 is not welded, so that the first pulley 33 or the second pulley 43 can pass through.
The longitudinal rails 61 and the transverse rails 62 are arranged in parallel, the two groups of longitudinal rails 61 and the transverse rails 62 are arranged in a groined shape, so that the sliding platform can circularly use the prefabricated box girder 5 along the rail assembly 6, each group of longitudinal rails 61 comprises two longitudinal rails 61, each group of transverse rails 62 comprises two transverse rails 62, each longitudinal rail 61 is connected with the first pulley 33, and each transverse rail 62 is connected with the second pulley 43, thereby realizing stable movement of the sliding platform on the rail assembly 6.
The support assembly 1 comprises a baffle 11, a support seat 12, a support plate 13, a first hydraulic cylinder 14 and a support column 15; the two baffles 11 are vertically and symmetrically arranged on two sides of the supporting seat 12, the baffles 11 can be rectangular plates, two sides of the supporting seat 12 horizontally extend outwards, the middle part of the supporting seat downwards sinks to form a space for accommodating the supporting column 15 and the first hydraulic cylinder 14, and the baffles 11 and the supporting seat 12 can be integrally formed or welded; the upper surfaces of the plates horizontally extending outwards from the two sides of the supporting seat 12 are respectively provided with sliding grooves 111 along the left-right direction, the sliding grooves 111 on the two sides of the supporting seat 12 are respectively arranged in parallel and are used for being connected with the limiting assembly 2 in a sliding manner, and the two ends, close to the concave space, of the middle part of the supporting seat 12 are respectively provided with a fixed plate 121 and are used for being connected with the limiting assembly 2; the baffle 11 is fixedly connected with the first hinge supports 16, two first hinge supports 16 are arranged, and the two first hinge supports 16 are longitudinally arranged back and forth; the backup pad 13 is located supporting seat 12 top, with supporting seat 12 sliding connection, backup pad 13 upper surface and prefabricated case roof beam 5 butt for support prefabricated case roof beam 5.
The support columns 15 are fixedly arranged in the support seat 12 and used for providing supporting force for the support plate 13, a plurality of support columns 15 are arranged, the support columns 15 are uniformly distributed and arranged into two groups along the left-right direction at intervals, and the two groups of support columns 15 are respectively arranged at two ends of the support seat 12; the first hydraulic cylinders 14 are arranged between the two groups of support columns 15, the number of the first hydraulic cylinders 14 is two, the cylinder body end of each first hydraulic cylinder 14 is fixedly connected with the support seat 12, the connection mode can be screw connection, the piston end of each first hydraulic cylinder 14 is fixedly connected with the support plate 13, and the connection mode can be screw connection; when the sliding platform is used, the prefabricated box girder 5 is hoisted above the supporting plate 13 through hoisting equipment in a prefabricated area, so that two groups of sliding platforms are respectively close to the positions with the same distance at the two ends of the prefabricated box girder 5, when the prefabricated box girder 5 is transported to a storage area, the first hydraulic cylinder 14 is started, the piston end of the first hydraulic cylinder 14 is extended, the supporting plate 13 is driven to ascend, the prefabricated box girder 5 is ejected upwards, and a constructor is convenient to hoist the prefabricated box girder 5 to an engineering site construction position through the hoisting equipment; the first hydraulic cylinder 14 is started, so that the piston end of the first hydraulic cylinder 14 is contracted, and the supporting plate 13 is driven to return to the initial position.
The two limiting assemblies 2 are respectively corresponding to the two baffle plates 11, and each limiting assembly 2 comprises a limiting plate 21, a sliding piece 22, a motor 23, a screw rod 24, a telescopic rod 25 and a second hinge support 26; one side, close to the supporting seat 12, of the limiting plate 21 is abutted against the prefabricated box girder 5, the other side of the limiting plate is fixedly connected with the second hinge support 26, the telescopic rod 25 is of a hydraulic structure, the limiting plate 21 is rotatably connected with the cylinder end of the telescopic rod 25 through the second hinge support 26, and the telescopic end of the telescopic rod 25 is rotatably connected with the baffle 11 through the first hinge support 16; the two second hinge supports 26 and the two telescopic rods 25 are respectively arranged, and the two second hinge supports 26 and the two telescopic rods 25 are respectively in one-to-one correspondence with the two first hinge supports 16; the telescopic rod 25 is used for supporting the limiting plate 21, so that the limiting plate 21 is attached to the web plate of the prefabricated box girder 5, the prefabricated box girder 5 is prevented from shaking in transportation, and stability is enhanced.
Connecting lugs 211 are respectively arranged at two ends of the lower part of the limiting plate 21, connecting shafts 221 are respectively arranged at two ends of the sliding piece 22, the limiting plate 21 is hinged with the sliding piece 22 through the connecting lugs 211 and the connecting shafts 221, sliding blocks 222 are arranged at the lower side of the sliding piece 22, two sliding blocks 222 are arranged, the two sliding blocks 222 are identical in shape, equal in size and opposite in position to two sliding grooves 111 on the baffle 11, and the sliding piece 22 is in sliding connection with the upper surface of the supporting seat 12 through the sliding blocks 222 and the sliding grooves 111; the motor 23 is fixedly arranged on the outer side of the baffle 11, one end of the screw 24 penetrates through the baffle 11 and is fixedly connected with an output shaft of the motor 23, the screw is rotatably connected with the baffle 11, the other end of the screw penetrates through the sliding piece 22 and is rotatably connected with the fixed plate 121, and the screw 24 is in threaded connection with the sliding piece 22; when the sliding platform is used, the motor 23 is started, the output shaft of the motor 23 drives the screw rod 24 to rotate, so that the sliding pieces 22 move along the sliding grooves 111, the distance between the sliding pieces 22 in the two groups of limiting assemblies 2 is adapted to the width of the bottom plate of the prefabricated box girder 5, constructors rotate the limiting plates 21 until the limiting plates 21 are attached to the webs of the prefabricated box girders 5, and the limiting assemblies 2 can be adapted to the prefabricated box girders 5 with different sizes.
The longitudinal moving assembly 3 comprises a second hydraulic cylinder 31, a first moving seat 32 and a first pulley 33; the second hydraulic cylinders 31 are vertically arranged in a plurality, the second hydraulic cylinders 31 are uniformly distributed and arranged at intervals along the left-right direction, the piston ends of the second hydraulic cylinders 31 are fixedly connected with the upper surface of the first movable seat 32, the connection mode can be screw connection, the cylinder body ends of the second hydraulic cylinders 31 are fixedly connected with the lower surface of the supporting seat 12, and the connection mode can be screw connection; a through groove is arranged at the lower part of the first movable seat 32, first pulley shafts 321 are respectively arranged at two ends of the through groove, and the first movable seat 32 is rotationally connected with the first pulleys 33 through the first pulley shafts 321; the first pulleys 33 are provided with two groups, the two groups of first pulleys 33 are symmetrically arranged, each group of first pulleys 33 is provided with two first pulleys 33, the two first pulleys 33 are longitudinally arranged back and forth, the first pulleys 33 are abutted or separated from the longitudinal guide rail 612, the first pulleys 33 can roll along the upper surface of the longitudinal guide rail 612, the inner sides of the first pulleys 33 are provided with outer bosses I which are abutted or separated from the longitudinal rail plate 611, the outer bosses I can roll along the longitudinal rail plate 611, and the inner sides of the outer bosses I are abutted against the inner sides of the longitudinal guide rail 612 and are used for preventing the first pulleys 33 from being separated from the longitudinal guide rail 612; when the sliding platform is switched from the transverse rail 62 to move along the longitudinal rail 61, the second hydraulic cylinder 31 is started, the piston end of the second hydraulic cylinder 31 is extended, the first movable seat 32 is driven to descend, the first pulley 33 is abutted against the longitudinal rail 612, the third hydraulic cylinder 41 is started, the piston end of the third hydraulic cylinder 41 is contracted, the second movable seat 42 is driven to ascend until the second pulley 43 is separated from the transverse rail 622, the first pulley 33 is driven to roll along the upper surface of the longitudinal rail 612, and the prefabricated box girder 5 is driven to move along the longitudinal rail 61.
The traversing assembly 4 comprises a third hydraulic cylinder 41, a second movable seat 42 and a second pulley 43; the cylinder body end of the third hydraulic cylinder 41 is fixedly connected with the bottom of one side of the support seat 12 extending horizontally outwards, the connection mode can be screw connection, the piston end of the third hydraulic cylinder 41 is fixedly connected with the upper surface of the second movable seat 42, and the connection mode can be screw connection; the two ends of the second moving seat 42 are respectively provided with a second pulley shaft 421, and the second moving seat 42 is rotatably connected with the second pulley 43 through the second pulley shafts 421; the second pulleys 43 are provided with two groups, the two groups of second pulleys 43 are symmetrically arranged, each group of second pulleys 43 is provided with two second pulleys 43, the two second pulleys 43 are arranged left and right along the transverse direction, the second pulleys 43 are abutted or separated from the transverse guide 622, the second pulleys 43 can roll along the upper surface of the transverse guide 622, the inner side of each second pulley 43 is provided with an outer boss which is abutted or separated from the transverse guide 622, the outer boss can roll along the transverse guide 622, and the inner side of each outer boss is abutted against the inner side of the transverse guide 622 so as to prevent the second pulleys 43 from being separated from the transverse guide 622; when the sliding platform is switched from the longitudinal rail 61 to move along the transverse rail 62, the third hydraulic cylinder 41 is started, the piston end of the third hydraulic cylinder 41 is extended, the second movable seat 42 is driven to descend until the second pulley 43 abuts against the transverse rail 622, the second hydraulic cylinder 31 is started again, the piston end of the second hydraulic cylinder 31 is contracted, the first movable seat 32 is driven to ascend, the first pulley 33 is separated from the longitudinal rail 612, the second pulley 43 rolls along the upper surface of the transverse rail 622, and the prefabricated box girder 5 is driven to move along the transverse rail 62.
The invention also provides a precast box girder traversing construction method adopting the precast box girder traversing construction system, which comprises the following steps:
s1: respectively placing two ends of the prefabricated box girder 5 above the supporting plates 13 of the two sliding platforms in the same group at the prefabricated place, so that the two sliding platforms in the same group are respectively positioned at the same distance from the two ends of the prefabricated box girder 5;
s2: starting the motor 23, wherein an output shaft of the motor 23 drives the screw rod 24 to rotate, so that the sliding piece 22 moves until the distance between the two groups of limiting assemblies 2 is adapted to the width of the bottom plate of the prefabricated box girder 5, and the telescopic rod 25 acts to drive the limiting plate 21 to rotate until the web plate of the prefabricated box girder 5 is attached;
s3: starting the third hydraulic cylinder 41, enabling the piston end of the third hydraulic cylinder 41 to shrink, driving the second movable seat 42 to rise, enabling the second pulley 43 to be separated from the transverse guide rail 622, enabling the first pulley 33 to be abutted with the longitudinal guide rail 612, and enabling the first pulley 33 to move and transport the prefabricated box girder 5 to a transfer storage place along the longitudinal guide rail 612;
s4: repeating S1-S3, and moving a plurality of prefabricated box girders 5 to a transfer storage place through a plurality of groups of sliding platforms;
s5: when the prefabricated box girder 5 is required to be hoisted to a construction site, the first hydraulic cylinder 14 is started, so that the piston end of the first hydraulic cylinder 14 is extended, the supporting plate 13 is driven to rise, the prefabricated box girder 5 is ejected upwards, so that constructors can conveniently hoist the prefabricated box girder 5 to the construction site for installation through hoisting equipment, and at the moment, each group of two sliding platforms are empty;
s6: activating the third hydraulic cylinder 41 to extend the piston end of the third hydraulic cylinder 41 until the second pulley 43 abuts against the transverse guide 622; the second hydraulic cylinder 31 is started again, so that the piston end of the second hydraulic cylinder 31 is contracted, the first movable seat 32 is driven to ascend, the first pulley 33 is separated from the longitudinal guide rail 612, and the sliding platform moves rightwards along the transverse guide rail 622 to the joint of the longitudinal rail 61 and the transverse rail 62;
s7: starting the first hydraulic cylinder 14 to enable the piston end of the first hydraulic cylinder 14 to shrink, and driving the supporting plate 13 to restore to the initial position; starting the second hydraulic cylinder 31, so that the piston end of the second hydraulic cylinder 31 extends to drive the first movable seat 32 to descend, and the first pulley 33 is abutted against the longitudinal guide rail 612; the third hydraulic cylinder 41 is started again, so that the piston end of the third hydraulic cylinder 41 is contracted, the second movable seat 42 is driven to ascend, the second pulley 43 is separated from the transverse guide rail 622, and the sliding platform moves forwards along the longitudinal guide rail 612 to the joint of the longitudinal rail 61 and the transverse rail 62;
s8: starting the third hydraulic cylinder 41, enabling the piston end of the third hydraulic cylinder 41 to extend, driving the second movable seat 42 to descend, enabling the second pulley 43 to be in contact with the transverse guide rail 622, starting the second hydraulic cylinder 31 again, enabling the piston end of the second hydraulic cylinder 31 to shrink, driving the first movable seat 32 to ascend, and enabling the first pulley 33 to be separated from the longitudinal guide rail 612; the skid platform moves leftwards along the longitudinal rail 612 to the junction of the longitudinal rail 61 and the transverse rail 62;
s9: and (6) repeating the steps (S6-S8) to enable the plurality of empty sliding platforms to return to the prefabricated place for recycling.
According to the transverse moving construction system for the prefabricated box girder, the prefabricated box girder is transported by matching the sliding platform and the track assembly, so that the construction cost of dispatching by adopting a special gantry crane can be reduced, and the high-efficiency transportation of the prefabricated box girder can be ensured; the sliding platform ensures that the prefabricated box girder is stably fixed in the transportation process through the supporting component and the limiting component, and meets the safety and reliability in girder moving; the sliding platform can be matched with the track assembly through the longitudinal moving assembly and the transverse moving assembly, so that stable movement and reversing of the sliding platform are realized, and construction cost and time are reduced.
The invention also provides a precast box girder traversing construction method adopting the precast box girder traversing construction system, the precast box girders meeting the design requirement are moved by matching the sliding platforms and the track components, in the precast box girder traversing construction system, a plurality of sliding platforms can be arranged, each precast box girder and the matched sliding platform are directly arranged at a transit storage place, when the precast box girders positioned at the transit storage place are used, the empty sliding platform can be reversed through the track components and transported to the precast place for reuse, the method can recycle and transport the precast box girders, greatly reduce construction cost and time, and improve construction efficiency.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The transverse moving construction system of the prefabricated box girder is characterized by comprising sliding platforms and track assemblies (6), wherein the track assemblies (6) are arranged in a crisscross manner, the two sliding platforms are matched to transport the prefabricated box girder (5) along the track assemblies (6) in a longitudinal and transverse moving mode, and the sliding platforms comprise supporting assemblies (1), limiting assemblies (2), longitudinal moving assemblies (3) and transverse moving assemblies (4); two groups of limiting assemblies (2) are symmetrically arranged on the upper part of the supporting assembly (1), and the two groups of limiting assemblies (2) are respectively and movably connected with two ends of the supporting assembly (1); the upper end of the longitudinal moving assembly (3) is fixedly connected with the bottom of the supporting assembly (1) through a hydraulic telescopic structure, and the longitudinal moving assembly (3) longitudinally slides back and forth along the track assembly (6) through a first pulley (33); two groups of transverse moving assemblies (4) are respectively arranged at two ends of the lower part of the supporting assembly (1), the upper ends of the transverse moving assemblies (4) are fixedly connected with the bottoms of the two ends of the supporting assembly (1) through a hydraulic telescopic structure, and the transverse moving assemblies (4) transversely slide left and right along the track assemblies (6) through second pulleys (43).
2. A precast box girder traversing construction system according to claim 1, wherein the support assembly (1) comprises a baffle (11), a support base (12) and a support plate (13) and a first hydraulic cylinder (14); two baffle plates (11) are vertically and symmetrically arranged on two sides of the supporting seat (12), two sides of the supporting seat (12) extend outwards horizontally, the middle part of the supporting seat is sunken downwards to form a space for accommodating the first hydraulic cylinder (14), and two ends, close to the sunken space, of the middle part of the supporting seat (12) are respectively provided with a fixed plate (121); the supporting plate (13) is positioned above the supporting seat (12) and is in sliding connection with the supporting seat (12), and the upper surface of the supporting plate (13) is abutted with the prefabricated box girder (5); the cylinder body end of the first hydraulic cylinder (14) is fixedly connected with the supporting seat (12), and the piston end of the first hydraulic cylinder (14) is fixedly connected with the supporting plate (13).
3. The precast box girder traversing construction system according to claim 1, wherein the longitudinally moving assembly (3) comprises a plurality of second hydraulic cylinders (31) and first moving seats (32), the second hydraulic cylinders (31) are vertically arranged, the plurality of second hydraulic cylinders (31) are uniformly distributed along the left-right direction at intervals, the cylinder body ends of the second hydraulic cylinders (31) are fixedly connected with the supporting seats (12), the piston ends of the second hydraulic cylinders (31) are fixedly connected with the upper surfaces of the first moving seats (32), through grooves are formed in the lower portions of the first moving seats (32), first pulley shafts (321) are respectively arranged at the two ends of each through groove, and the first moving seats (32) are rotationally connected with the first pulleys (33) through the first pulley shafts (321).
4. A precast box girder traversing construction system according to claim 1, wherein the traversing assembly (4) comprises a third hydraulic cylinder (41) and a second movable seat (42); the cylinder body end of the third hydraulic cylinder (41) is fixedly connected with the bottom of one side of the support seat (12) extending outwards horizontally, the piston end of the third hydraulic cylinder (41) is fixedly connected with the upper surface of the second movable seat (42), second pulley shafts (421) are respectively arranged at two ends of the second movable seat (42), and the second movable seat (42) is rotationally connected with the second pulleys (43) through the second pulley shafts (421).
5. A precast box girder traversing construction system according to claim 2, wherein the limit assembly (2) comprises a limit plate (21), a sliding piece (22), a screw rod (24) and a telescopic rod (25); one side of the limiting plate (21) close to the supporting seat (12) is abutted against the prefabricated box girder (5), the other side of the limiting plate is rotationally connected with the cylinder end of the telescopic rod (25), and the telescopic end of the telescopic rod (25) is rotationally connected with the baffle plate (11); the sliding piece (22) is hinged with the limiting plate (21), and the lower part of the sliding piece (22) is connected with the upper surface of the supporting seat (12) in a sliding way; one end of the screw rod (24) is rotationally connected with the baffle (11), the other end of the screw rod passes through the sliding piece (22) and is rotationally connected with the fixed plate (121), and the screw rod (24) is in threaded connection with the sliding piece (22).
6. The transverse movement construction system for the prefabricated box girder according to claim 1, wherein the track assembly (6) comprises a longitudinal track (61) and a transverse track (62), the longitudinal track (61) comprises a longitudinal track plate (611) and a longitudinal guide rail (612), and the longitudinal track (61) is perpendicular to the transverse track (62); the transverse rail (62) includes a transverse rail plate (621) and a transverse rail (622).
7. The transverse moving construction system for the prefabricated box girder according to claim 6, wherein two groups of longitudinal rails (61) and transverse rails (62) are arranged in parallel, the two groups of longitudinal rails (61) and the transverse rails (62) are arranged in a groined shape, each group of longitudinal rails (61) comprises two longitudinal rails (61), each group of transverse rails (62) comprises two transverse rails (62), each longitudinal rail (61) is connected with a first pulley (33), and each transverse rail (62) is connected with a second pulley (43).
8. A precast box girder traversing construction method, according to any one of claims 1 to 7, characterized by comprising the steps of:
s1: two ends of the prefabricated box girder (5) are respectively arranged above the supporting plates (13) of the two sliding platforms in the same group at the prefabricated places, so that the two sliding platforms in the same group are respectively positioned at the same distance at the two ends of the prefabricated box girder (5);
s2: starting the limiting assemblies (2), enabling the sliding members (22) to move until the distance between the two groups of limiting assemblies (2) is adapted to the width of the bottom plate of the prefabricated box girder (5), and enabling the telescopic rods (25) to act to drive the limiting plates (21) to rotate until the limiting plates are attached to the web plate of the prefabricated box girder (5);
s3: starting the traversing assembly (4) to separate the second pulley (43) from the transverse guide rail (622), and moving and transporting the prefabricated box girder (5) to a transit storage place along the longitudinal guide rail (612) by the first pulley (33) along the longitudinal guide rail (612);
s4: repeating the steps S1-S3, and moving a plurality of prefabricated box girders (5) to a transfer storage place through a plurality of groups of sliding platforms;
s5: when the prefabricated box girder (5) needs to be hoisted to a construction site, starting the supporting component (1) to drive the supporting plate (13) to ascend, and ejecting the prefabricated box girder (5) upwards, so that constructors can hoist the prefabricated box girder (5) to the construction site for installation through hoisting equipment, and each group of two sliding platforms is empty at the moment;
s6: starting the traversing assembly (4) until the second pulley (43) is abutted with the transverse guide rail (622); starting the longitudinal moving assembly (3) again, and lifting the first moving seat (32) so as to separate the first pulley (33) from the longitudinal guide rail (612), and moving the sliding platform rightwards along the transverse guide rail (622) to the joint of the longitudinal rail (61) and the transverse rail (62);
s7: starting the supporting component (1) to restore the supporting board (13) to the initial position; starting the longitudinal moving assembly (3) to enable the first moving seat (32) to descend, so that the first pulley (33) is abutted with the longitudinal guide rail (612); starting the transverse moving assembly (4) again to enable the second moving seat (42) to ascend, so that the second pulley (43) is separated from the transverse guide rail (622), and the sliding platform moves forwards along the longitudinal guide rail (612) to the joint of the longitudinal rail (61) and the transverse rail (62);
s8: the traversing assembly (4) is started, the second moving seat (42) is lowered, and the second pulley (43) is abutted against the transverse guide rail (622); starting the longitudinal moving assembly (3) again to drive the first moving seat (32) to ascend, so that the first pulley (33) is separated from the longitudinal guide rail (612); the sliding platform moves forwards along the longitudinal guide rail (612) to the junction of the longitudinal rail (61) and the transverse rail (62);
s9: and (6) repeating the steps (S6-S8) to enable the plurality of empty sliding platforms to return to the prefabricated place for recycling.
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| CN202310874976.0A CN116815650A (en) | 2023-07-17 | 2023-07-17 | Precast box girder transverse movement construction method and construction system |
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| CN118205998A (en) * | 2024-05-07 | 2024-06-18 | 中铁十局集团有限公司 | Prefabricated box beam hoisting device and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117359771A (en) * | 2023-10-16 | 2024-01-09 | 山东瑞亿高铁科技有限公司 | Beam making pedestal equipment for interlocking assembly and recycling |
| CN118327034A (en) * | 2024-04-15 | 2024-07-12 | 中铁西南科学研究院有限公司 | Box culvert rapid construction tool and construction method |
| CN118205998A (en) * | 2024-05-07 | 2024-06-18 | 中铁十局集团有限公司 | Prefabricated box beam hoisting device and construction method |
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