Box culvert pouring top plate dismounting structure

Abstract

The utility model discloses a box culvert pouring top plate dismounting structure which comprises two bottom beams, the number of the bottom beams is two, the two bottom beams are arranged in a left-right mode, and the positions, close to the front end and the rear end, of the tops of the two bottom beams are each provided with a front end stand column and a rear end stand column. All the components are assembled and can be disassembled and recycled, the components are connected through 8.8-grade high-strength M20 bolts, walking wheels are installed on a truss bottom plate, the components can integrally move in the construction process, a set-shaped steel truss is adopted in the box culvert to serve as a supporting system, the early-stage investment cost is high, the assembly time is long, but in the later-stage construction, the construction cost is low, and the construction efficiency is high. A large amount of manpower and mechanical equipment for transferring the steel supporting frame and the formwork can be reduced, the labor cost is reduced, the work efficiency is improved, after the steel formwork trolley is assembled for the first time, the steel formwork trolley can be directly and integrally hoisted and installed into a box culvert, convenience and rapidness are achieved, a large amount of installation and disassembly time is saved, and the key effect on cost control and construction period control is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of box culvert concrete pouring, in particular to a box culvert pouring top plate disassembly structure. Background Art

[0002] When pouring the roof slab of an existing box culvert, the formwork is divided into two parts: the side formwork and the top formwork. When the formwork is reused, it is installed through a series of steps, including setting up supports, installing the side formwork, installing the top I-beams, and then installing the top and side formwork. To remove the formwork, the top support must be loosened before the side and top formwork are removed. This makes the formwork installation and removal process complex, time-consuming, and labor-intensive. The formwork's overall stability is poor, and the formwork itself is not integrated, making it prone to slippage and leakage. Repeated assembly of formwork during box culvert construction wastes a significant amount of time. Formwork removal is difficult, and formwork turnover and assembly are time-consuming, resulting in high labor and equipment costs. Utility Model Content

[0003] The purpose of the utility model is to provide a suction bucket construction hanger to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A box culvert cast roof disassembly structure includes a bottom beam, two bottom beams are provided, and the two bottom beams are arranged on the left and right, front and rear end columns are provided on the tops of the two bottom beams near the front and rear ends, and two front and rear distributed middle columns are provided on the tops of the two bottom beams near the middle position, intermediate cross braces are provided between the two longitudinally adjacent front and rear end columns and the middle column, and the tops of the two longitudinally adjacent front and rear end columns are provided with the same front upper cross beam, the tops of the two longitudinally adjacent middle columns are provided with the same middle upper cross beam, three top plate longitudinal beams are equidistantly provided on the tops of the two front upper cross beams and the middle upper cross beam, and the tops of the three top plate longitudinal beams are provided with the same top plate body.

[0006] As a further solution of the present invention, a connecting mechanism is provided between the top plate body and the top plate longitudinal beam, and three cross connections are equidistantly provided on the top of the two bottom beams, and the two ends of the cross connections located on the front and rear sides are respectively fixedly connected to the adjacent front and rear end columns and the center column, and the front and rear ends of the two cross connections located in the middle are respectively fixedly connected to the adjacent center columns.

[0007] As a further solution of the present invention, three scissors diagonal braces are equidistantly arranged on the tops of the two bottom beams, and the two scissors diagonal braces located on the front and rear sides are fixedly connected to the adjacent front and rear end columns and the middle column respectively, and the two scissors diagonal braces located in the middle are fixedly connected to the adjacent middle columns respectively, and the two longitudinally adjacent front and rear end columns and the adjacent side of the middle column are each provided with a column diagonal brace, and the other ends of the column diagonal braces are respectively fixedly connected to the adjacent front end upper cross beam and the middle upper cross beam, a number of adjustment screw rods are equidistantly arranged on the two bottom beams, and a number of cross bracing screw rods are equidistantly arranged between the two adjacent bottom beams.

[0008] As a further solution of the present invention, the front cross-section of the top plate longitudinal beam is arranged in an I-shape.

[0009] As a further solution of the present invention, the connecting mechanism includes three groups of fixed plates, and the three groups of fixed plates are evenly fixedly connected to the bottom of the top plate body, each group of fixed plates has two, and the two fixed plates are respectively fitted on the left and right sides of the top plate longitudinal beam, each group of fixed plates is rotatably connected to the same threaded rod, and the threaded rod is screwed with two threaded sleeves with opposite internal thread directions, each of the fixed plates is provided with two upper and lower distributed limit slots, and the inner cavities of two vertically adjacent limit slots are slidably connected to the same C-shaped plate.

[0010] As a further solution of the present invention, the top of the three top plate longitudinal beams are provided with two L-shaped plates distributed on the left and right, and the two sides of the L-shaped plates are respectively fixedly connected to the threaded sleeve and the C-shaped plate, the bottom of the top plate body is fixedly connected to a connecting plate near the left and right sides, and a through hole is opened on the connecting plate on the right side, the ends of the two threaded rods on the left and right sides respectively penetrate the inner cavities of adjacent through holes, and are fixedly connected to driven gears, and the bottoms of the driven gears are engaged with transmission gears, and movable shafts are fixed through the centers of the two transmission gears, and one end of the movable shaft is rotatably connected to the connecting plate, and the other ends of the two movable shafts are fixedly connected to a hand crank, and the adjacent ends of the two threaded rods on the left and right sides are fixedly connected to the transmission shaft, and the other end of the transmission shaft is fixedly connected to one end of the middle threaded rod.

[0011] As a further solution of the present invention, three sliders are fixedly connected to the bottom of the L-shaped plate at equal distances from front to back, and the top of the top plate longitudinal beam is provided with three sliding grooves adapted to the sliders, and the three sliders are respectively slidably connected to the inner cavities of adjacent sliding grooves.

[0012] As a further solution of the present invention, the C-shaped plate is arranged to fit the lower surface of the top plate longitudinal beam.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Through the arrangement of the top plate longitudinal beam, the middle upper cross beam, the front upper cross beam, the middle column, the front and rear end columns, the column diagonal brace, the middle cross brace, the scissors diagonal brace, the cross connection, the bottom beam, the adjustment screw rod and the cross brace screw rod, the light integral steel formwork trolley truss has good integrity, and the various components are assembled, detachable and recyclable, and the components are connected with 8.8-grade high-strength M20 bolts, and the walking wheels are installed on the bottom plate of the truss, which can be moved as a whole during the construction process. The box culvert adopts the standard steel truss as the support system. The initial investment cost is high and the assembly time is long, but in the later construction, a large amount of manpower and mechanical equipment can be reduced to transport the steel support frame and formwork, reducing labor costs and speeding up work efficiency. After the steel formwork trolley is assembled for the first time, it can be directly lifted and installed into the box culvert as a whole, which is convenient and fast, saving a lot of installation and disassembly time, and playing a key role in cost control and construction period control.

[0015] 2. Through the linkage setting of the fixed plate, the limiting slot, the C-shaped plate, the L-shaped plate, the threaded sleeve, the threaded rod, the transmission shaft, the connecting plate, the driven gear, the transmission gear, the movable shaft, the hand crank, the slider and the slide groove, after the top plate body is laid on the top of the top plate longitudinal beam, each set of fixed plates can be respectively fitted on the left and right sides of the top plate longitudinal beam, and the slider can be slid into the slide groove cavity on the top of the top plate longitudinal beam. Then, the threaded rod can be driven to rotate by rotating the hand crank on either side, and the remaining two threaded rods can be driven to rotate synchronously through the transmission connection between the transmission shaft and the threaded rod, thereby driving the two threaded sleeves on the same threaded rod to move relative to each other, and driving the C-shaped plate to slide and fit the lower surface of the top plate longitudinal beam, thereby locking the top plate body in the longitudinal, transverse and vertical directions, which can not only improve the stability of the installation of the top plate body, but also improve the convenience of disassembly and assembly of the top plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the connection structure between the top plate body and the top plate longitudinal beams of this embodiment;

[0018] Figure 3 This is a schematic diagram of the connection structure between the top plate longitudinal beam and the U-shaped plate of this embodiment;

[0019] Figure 4 Schematic diagram of the fixed plate structure of this embodiment;

[0020] Figure 5 This is a schematic diagram of the main structure of the top plate of this embodiment.

[0021] In the figure: 1. Top plate longitudinal beam; 2. Middle upper crossbeam; 3. Front upper crossbeam; 4. Middle column; 5. Front and rear end columns; 6. Column diagonal brace; 7. Middle crossbeam; 8. Scissors diagonal brace; 9. Cross connection; 10. Bottom beam; 11. Adjustment screw rod; 12. Cross brace screw rod; 13. Top plate body; 14. Fixed plate; 15. Threaded sleeve; 16. Threaded rod; 17. L-shaped plate; 18. C-shaped plate; 19. Limiting slot; 20. Slider; 21. Slide; 22. Drive shaft; 23. Connecting plate; 24. Driven gear; 25. Drive gear; 26. Movable shaft; 27. Hand crank. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figure 1 The top of the two front and rear end columns 5 are connected to each other, and the top of the two bottom beams 10 is connected to the top of the top beam 10. There are two front and rear end columns 5 on the top of the two bottom beams 10, and two front and rear distributed center columns 4 are provided near the middle position of the top of the two bottom beams 10. An intermediate cross brace 7 is provided between the two longitudinally adjacent front and rear end columns 5 and the center column 4, and the top of the two longitudinally adjacent front and rear end columns 5 is provided with the same front upper cross beam 3, and the top of the two longitudinally adjacent center columns 4 is provided with the same middle upper cross beam 2. Three top plate longitudinal beams 1 are equidistantly arranged on the top of the two front upper cross beams 3 and the middle upper cross beam 2, and the top of the three top plate longitudinal beams 1 is provided with the same top plate body 13. A connecting mechanism is provided between the top plate body 13 and the top plate longitudinal beam 1. The front cross section of the top plate longitudinal beam 1 is an I-shaped setting, which can meet the bearing requirements of the building structure while maintaining high strength and improve the stability of the connection between the top plate longitudinal beam 1 and the top plate body 13.

[0025] Three cross links 9 are equidistantly provided on the tops of the two bottom beams 10, and the two ends of the two cross links 9 on the front and rear sides are fixedly connected to the adjacent front and rear end columns 5 and the center column 4 respectively, and the front and rear ends of the two cross links 9 in the middle are fixedly connected to the adjacent center column 4 respectively, and three scissors diagonal braces 8 are equidistantly provided on the tops of the two bottom beams 10, and the two scissors diagonal braces 8 on the front and rear sides are fixedly connected to the adjacent front and rear end columns 5 and the center column 4 respectively, and the two scissors diagonal braces 8 in the middle are fixedly connected to the adjacent center column 4 respectively, and the adjacent sides of the two longitudinally adjacent front and rear end columns 5 and the center column 4 are provided with column diagonal braces 6, and the other ends of the column diagonal braces 6 are fixedly connected to the adjacent front upper cross beam 3 and the middle upper cross beam 2 respectively, and a number of adjusting screw rods 11 are equidistantly provided on the two bottom beams 10, and a number of cross bracing screw rods 12 are equidistantly provided between the two adjacent bottom beams 10.

[0026] Working principle: When the utility model is in use, the trolley is composed of a bottom beam 10, a front upper crossbeam 3, a middle upper crossbeam 2, front and rear end columns 5, a middle column 4, and a top plate longitudinal beam 1, which constitute the main vertical force support system. The total length of the trolley is 5.1m, and it is composed of 20# channel steel. The column axis spacing is 2.8m. First, four column door frames with equal spacing of 1.4 meters are installed on the trolley bottom beam 10, and then the cross bracing screw rods 12, crossbeams, horizontal cross braces, and diagonal braces in the middle and on both sides of the door frame are connected. , so that it forms a whole, and finally install the top plate longitudinal beam 1. The formwork is assembled with combined steel formwork, the back rib is made of 10# channel steel, the stiffening rib plate is 6# flat steel, and the inner formwork and top formwork are assembled in 4 stages (1.25m, 1.25m, 1.25m, 1.25m). The top plate formwork is installed first, and then the side formwork is installed. A connecting plate is set at the back rib of the top formwork, which can be directly connected to the screws of the trolley top longitudinal beam. A full-length connecting rod is set on the side formwork, which can be directly connected to the trolley column cross bracing screw rod 12.

[0027] Specifically, after all the templates are installed, enter the interior of the trolley, adjust the cross support screw 12 and the adjustment screw 11 to ensure that the overall size meets the design requirements. After the size adjustment is completed, the template is polished and the release agent is brushed. Before installation, the rails are arranged in the box culvert (spacing 2800) and the rails are connected and fixed with 10# channel steel to prevent the rails from shifting. The trolley + side formwork + top formwork weighs about 18 tons. Four lifting points are set at the crossbeam to keep it level during lifting. After the trolley is installed, first use iron wedges to insert them into the moving wheels to prevent the trolley from moving and sliding. Then the size of the entire trolley is adjusted using the internal cross support, diagonal support, and top support screws.

[0028] When adjusting the height, use 4 jacks to support the trolley so that its bottom is at the same level, then install the top support screw, fix the screw height, and unload the 4 jacks at the same time. When the top plate concrete strength reaches the designed demolding strength, the top plate can be demolded. Before removing the formwork, arrange the position of the winch and the completed rail support frame in advance. The track of the rail support frame and the track inside the trolley should be kept horizontal and straight. When removing the formwork, first retract the cross support screw 12 to let the side formwork leave the concrete surface (30mm), and then use 6 Use a screw jack to support the bottom beam 10 of the trolley, loosen the bottom support screw rod, separate it from the rail, and finally slowly lower the jacks at the same time to allow the trolley to separate from the top plate concrete under the action of its own weight until the moving wheel drops onto the steel track, completing the demoulding. After confirming that all the templates are off the concrete surface, use two lifting rings on the winch to connect the wire rope to the trolley pull ring. Then the winch operator presses the remote control to pull the trolley out at a uniform speed, and the gantry crane assists in traction. After the overall pulling is completed, it is polished, coated with release agent, and hoisted to the inside of the next box culvert.

[0029] Example 2

[0030] See also Figures 2 to 5 The connecting mechanism includes three groups of fixing plates 14, and the three groups of fixing plates 14 are evenly fixedly connected to the bottom of the top plate body 13. There are two fixing plates 14 in each group, and the two fixing plates 14 are respectively fitted on the left and right sides of the top plate longitudinal beam 1. Each group of fixing plates 14 is rotatably connected to the same threaded rod 16, and the threaded rod 16 is screwed with two threaded sleeves 15 with opposite internal thread directions. Each fixing plate 14 is provided with two upper and lower distributed limiting slots 19, and the inner cavity of the two vertically adjacent limiting slots 19 is slidably connected with the same C-shaped plate 18. The C-shaped plate 18 is rotatably connected to the top plate longitudinal beam 1 The lower surface is fitted and arranged to lock the top plate body 13 in the vertical direction. Two L-shaped plates 17 distributed on the left and right are provided on the top of the three top plate longitudinal beams 1, and the two sides of the L-shaped plate 17 are fixedly connected to the threaded sleeve 15 and the C-shaped plate 18 respectively. The bottom of the L-shaped plate 17 is fixedly connected with three sliders 20 equidistant from front to back. The top of the top plate longitudinal beam 1 is provided with three slide grooves 21 adapted to the sliders 20, and the three sliders 20 are slidably connected to the inner cavities of adjacent slide grooves 21, which can limit and lock the top plate body 13 in the longitudinal direction to prevent the top plate body 13 from displacement and sliding.

[0031] Specifically, the bottom of the top plate body 13 is fixedly connected to a connecting plate 23 near the left and right sides, and a through hole is opened on the connecting plate 23 on the right side. The ends away from the two threaded rods 16 on the left and right sides respectively pass through the inner cavities of adjacent through holes and are fixedly connected to a driven gear 24, and the bottom of the driven gear 24 is meshed with a transmission gear 25. A movable shaft 26 is fixedly passed through the center of the circle of the two transmission gears 25, and one end of the movable shaft 26 is rotatably connected to the connecting plate 23, and the other ends of the two movable shafts 26 are fixedly connected to a hand crank 27. The adjacent ends of the two threaded rods 16 on the left and right sides are fixedly connected to the transmission shaft 22, and the other end of the transmission shaft 22 is fixedly connected to one end of the middle threaded rod 16. By locking the top plate body 13 in the longitudinal, transverse and vertical directions, the stability of the installation of the top plate body 13 can be improved, and the convenience of disassembly and assembly of the top plate body 13 can be improved.

[0032] Working principle: When the utility model is in use, after the top plate body 13 is paved on the top of the top plate longitudinal beam 1, each set of fixed plates 14 is respectively fitted on the left and right sides of the top plate longitudinal beam 1, and the slider 20 is slidably inserted into the inner cavity of the slide groove 21 on the top of the top plate longitudinal beam 1. Then, by rotating the hand crank 27 on either side, the movable shaft 26 is driven to rotate, and the rotation of the movable shaft 26 drives the transmission gear 25 to rotate. The rotation of the transmission gear 25 drives the driven gear 24 to rotate. The rotation of the driven gear 24 can drive the threaded rod 16 to rotate, and the transmission connection between the transmission shaft 22 and the threaded rod 16 can synchronously drive the remaining two threaded rods 16 to rotate, thereby driving the two threaded sleeves 15 on the same threaded rod 16 to move relative to each other, and driving the C-shaped plate 18 to slide and fit on the lower surface of the top plate longitudinal beam 1, thereby locking the top plate body 13 in the longitudinal, transverse and vertical directions, which can not only improve the stability of the installation of the top plate body 13, but also improve the convenience of disassembly and assembly of the top plate body 13.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A box culvert casting top plate disassembly structure, comprising a bottom beam (10), characterized in that: Two bottom beams (10) are provided, and the two bottom beams (10) are provided on the left and right sides. Front and rear end columns (5) are provided at the tops of the two bottom beams (10) near the front and rear ends, and two middle columns (4) distributed front and back are provided at the tops of the two bottom beams (10) near the middle positions. An intermediate cross brace (7) is provided between the two longitudinally adjacent front and rear end columns (5) and the middle column (4), and the tops of the two longitudinally adjacent front and rear end columns (5) are provided with the same front upper cross beam (3), and the tops of the two longitudinally adjacent middle columns (4) are provided with the same middle upper cross beam (2). Three top plate longitudinal beams (1) are equidistantly provided on the tops of the two front upper cross beams (3) and the middle upper cross beam (2), and the tops of the three top plate longitudinal beams (1) are provided with the same top plate body (13).

2. A box culvert casting top plate disassembly structure according to claim 1, characterized in that: A connecting mechanism is provided between the top plate body (13) and the top plate longitudinal beam (1); three transverse links (9) are equidistantly provided on the tops of the two bottom beams (10); and the two ends of the transverse links (9) located on the front and rear sides are respectively fixedly connected to the adjacent front and rear end columns (5) and the center column (4); and the front and rear ends of the two transverse links (9) located in the middle are respectively fixedly connected to the adjacent center column (4).

3. A box culvert casting top plate disassembly structure according to claim 2, characterized in that: Three scissor diagonal braces (8) are evenly spaced on the tops of the two bottom beams (10), and the two scissor diagonal braces (8) located on the front and rear sides are fixedly connected to the adjacent front and rear end columns (5) and the middle column (4), respectively. The two scissor diagonal braces (8) located in the middle are fixedly connected to the adjacent middle column (4), and the adjacent sides of the two longitudinally adjacent front and rear end columns (5) and the middle column (4) are each provided with a column diagonal brace (6), and the other ends of the column diagonal braces (6) are respectively fixedly connected to the adjacent front upper cross beam (3) and the middle upper cross beam (2). A plurality of adjusting screw rods (11) are evenly spaced on the two bottom beams (10), and a plurality of cross bracing screw rods (12) are evenly spaced between the two adjacent bottom beams (10).

4. The box culvert casting top plate disassembly structure according to claim 1, characterized in that: The front cross section of the top plate longitudinal beam (1) is arranged in an I-shape.

5. The box culvert casting top plate disassembly structure according to claim 2, characterized in that: The connecting mechanism includes three groups of fixing plates (14), and the three groups of fixing plates (14) are evenly fixedly connected to the bottom of the top plate body (13), each group of fixing plates (14) has two, and the two fixing plates (14) are respectively arranged on the left and right sides of the top plate longitudinal beam (1), each group of fixing plates (14) is rotatably connected to the same threaded rod (16), and the threaded rod (16) is screwed with two threaded sleeves (15) with opposite internal thread directions, each fixing plate (14) is provided with two upper and lower distributed limiting slots (19), and the inner cavities of two vertically adjacent limiting slots (19) are slidably connected to the same C-shaped plate (18).

6. A box culvert casting top plate disassembly structure according to claim 5, characterized in that: The tops of the three top plate longitudinal beams (1) are each provided with two L-shaped plates (17) distributed on the left and right, and the two sides of the L-shaped plates (17) are respectively fixedly connected to the threaded sleeves (15) and the C-shaped plates (18), and the bottom of the top plate body (13) is fixedly connected to the left and right sides thereof, and a through hole is provided on the right side of the connecting plate (23), and the ends of the two threaded rods (16) on the left and right sides respectively penetrate the inner cavities of the adjacent through holes and are both fixedly connected to the driven gears (24), and The bottom of the driven gear (24) is meshed with a transmission gear (25), and a movable shaft (26) is fixed through the center of the two transmission gears (25), and one end of the movable shaft (26) is rotatably connected to the connecting plate (23), and the other ends of the two movable shafts (26) are fixedly connected to a hand crank (27), and the adjacent ends of the two threaded rods (16) located on the left and right sides are fixedly connected to a transmission shaft (22), and the other end of the transmission shaft (22) is fixedly connected to one end of the middle threaded rod (16).

7. A box culvert casting top plate disassembly structure according to claim 6, characterized in that: The bottom of the L-shaped plate (17) is fixedly connected with three sliders (20) at equal intervals from front to back, and the top of the top plate longitudinal beam (1) is provided with three sliding grooves (21) adapted to the sliders (20), and the three sliders (20) are respectively slidably connected to the inner cavities of adjacent sliding grooves (21).

8. The box culvert casting top plate disassembly structure according to claim 5, characterized in that: The C-shaped plate (18) is arranged to fit the lower surface of the top plate longitudinal beam (1).

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