Method of using an adjustable dolly formwork system

Abstract

The adjustable trolley formwork system of the present invention addresses the problems of poor adjustability of existing trolley formwork systems, non-adjustable support frames, and inconvenient movement. The steps are as follows: The assembled support frame and formwork system are placed in the first construction section. The bottom lifter extends to raise the top formwork assembly to the designed height. The corner formwork lifter extends to push the corner formwork panel to assemble with the top formwork assembly. The side formwork lifter extends to push the side formwork assembly out and assemble with the corner formwork panel. After the construction of the walls and top slab of the current construction section of the box culvert structure is completed, the wall support lifter retracts to move away from the wall. The side formwork lifter, corner formwork lifter, and bottom lifter are retracted sequentially, allowing the support frame and formwork system to be supported as a whole by the formwork moving vehicle. The formwork moving vehicle is then moved to the next construction section of the box culvert structure to be poured. This process is repeated until the concrete pouring of the box culvert structure is completed section by section.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method of using an adjustable trolley formwork system. Background Technology

[0002] Currently, in the construction of various box culverts, pipe corridors, tunnels and other structures, traditional trolley formwork is usually used for on-site concrete pouring. Traditional trolley formwork is generally a steel formwork rail trolley formwork or a simple steel formwork trolley formwork. Traditional trolley formwork has defects such as poor formwork system adjustment capability, non-adjustable support frame size, and inconvenient trolley formwork movement. This results in large deviations in the concrete structure pouring size, poor adaptability to culverts with different cross-sectional sizes, and low trolley formwork movement efficiency. Summary of the Invention

[0003] To address the problems of poor adjustability of existing trolley mold frames, non-adjustable support frame dimensions, and low trolley mold frame movement efficiency, the purpose of this invention is to provide a method for using an adjustable trolley mold frame system.

[0004] The technical solution adopted by this invention to solve its technical problem is: a method of using an adjustable trolley mold frame system, the steps of which are as follows:

[0005] S21: The assembled formwork system and support frame are placed on the already poured box culvert structure and located in the first construction section of the box culvert structure to be poured. The formwork system includes top formwork components, corner formwork panels and side formwork components. The support frame includes corner formwork lifts, support gantry frames, and side formwork lifts, wall support lifts and bottom lifts connected to the support gantry frames.

[0006] S22: After the formwork system and support frame are in place, control the bottom lift to extend and support the bottom slab of the cast-in-place box culvert structure, and simultaneously lift the top formwork assembly to the design height; control the wall support lift to extend and abut against the wall of the cast-in-place box culvert structure; control the screw of the corner formwork lift to extend and push the corner formwork panel out and assemble it with the top formwork assembly; then control the side formwork lift to extend and push the side formwork assembly out and assemble it with the corner formwork panel;

[0007] S23: Pour the walls and top slab of the current construction section of the box culvert structure to be poured. After the concrete reaches the design strength, control the wall support elevator to retract and separate from the walls of the already poured box culvert structure; control the side formwork elevator to retract and drive the side formwork components to retract and separate from the walls; then control the screw of the corner formwork elevator to retract and drive the corner formwork panel to retract and separate from the corner of the box culvert.

[0008] S24: Move the formwork moving vehicle to the bottom of the support frame so that the ends of the two telescopic frames of the formwork moving vehicle correspond to the positions of the casters of the support frame. Control the bottom lifting platform to retract so that the support frame and the formwork system can be supported as a whole by the formwork moving vehicle. Control the formwork moving vehicle to move to the next construction section of the box culvert structure to be poured.

[0009] S25: Repeat steps S22 to S24 until the concrete pouring construction of the box culvert structure to be poured is completed segment by segment.

[0010] The adjustable trolley formwork system of the present invention is used in the first construction section of the box culvert structure to be poured, after the assembled support frame and formwork system are placed. The wall support elevator extends and supports the wall of the box culvert structure that has been poured. The bottom elevator is controlled to extend and lift the top formwork assembly to the design height. The corner formwork elevator is controlled to extend and push the corner formwork panel to be assembled with the top formwork assembly. The side formwork elevator is controlled to extend and push the side formwork assembly out and assemble with the corner formwork panel. The formwork system is assembled in the order of first assembling the top formwork assembly, then assembling the corner formwork panel, and finally assembling the side formwork assembly. After the construction of the walls and top slab of the current construction section of the box culvert structure is completed, the wall support elevator is retracted away from the wall. The side formwork elevator, corner formwork elevator, and bottom elevator are retracted in sequence. The side formwork components are opened, then the corner formwork panels are opened, and finally the top formwork components are opened to complete the formwork system. The bottom elevator is retracted so that the support frame and formwork system can be supported as a whole on the formwork moving vehicle. The formwork moving vehicle is then controlled to move to the next construction section of the box culvert structure to be poured. This process is repeated until the concrete pouring of the box culvert structure is completed section by section. This method utilizes the overlapping of steel panels at the joints of the top formwork assembly, corner formwork panels, and side formwork assemblies to achieve seamless splicing, preventing grout leakage from affecting the quality of concrete pouring. It employs multi-angle telescopic adjustable components on the support frame for detachable connection with the formwork system, enabling automated adjustment of the formwork system's width and height, as well as automated closing and dismantling of each formwork component. Furthermore, the formwork moving vehicle can carry the support frame and the dismantled formwork system and move them as a whole to the next construction section of the box culvert structure to be poured. This method boasts a high degree of automation, high equipment turnover efficiency, and safe and efficient overall movement, improving the level of industrialized construction, enhancing construction efficiency and quality, and ensuring construction safety.

[0011] Furthermore, the support frame also includes multiple adjustable horizontal beams. The support gantry is a rectangular frame formed by connecting two vertically and horizontally spaced columns and two horizontal beams. The two support gantry are vertically spaced, and the multiple adjustable horizontal beams are horizontally arranged and bolted between the two support gantry. The adjustable horizontal beams include a first horizontal beam made of I-beams and a second horizontal beam made of two spaced and opposite channel steels. The web of the first horizontal beam is adapted to the gap between the two channel steels of the second horizontal beam, so that the first horizontal beam can be fitted into the gap of the second horizontal beam and slide relative to it. The first and second horizontal beams are equipped with multiple spaced bolt holes on their webs. The other ends of the first and second horizontal beams are vertically connected to side plates with bolt holes. The side plates of the first and second horizontal beams are bolted to the two supporting gantry frames on both sides. At least two pairs of side formwork lifters and one pair of wall support lifters are symmetrically installed on the two columns of each supporting gantry frame. The other end of the side formwork lifter is detachably connected to the side formwork assembly. The other end of the wall support lifter abuts against the wall of the cast-in-place box culvert structure. A bottom lifter is connected to the bottom of each column of the supporting gantry frame.

[0012] In step S21, the extension length of the adjustable horizontal beam is determined according to the width of the box culvert structure to be cast. After adjusting the relative position of the first horizontal beam and the second horizontal beam to the required length for construction, the positioning bolts pass through the bolt holes of the first horizontal beam and the second horizontal beam and are locked and fixed.

[0013] Furthermore, each of the supporting gantry frames also includes two pairs of connecting rods (first), one pair of connecting rods (second), a pair of cantilever beam support frames, and a pair of adjustable cantilever beams. The two pairs of connecting rods (first) are vertically fixed to the connection points of the columns and the crossbeams, respectively. One end of the connecting rod (first) near the proposed culvert structure is bolted to the side formwork lifting machine, and the other end is bolted to the adjustable horizontal beam. The pair of connecting rods (second) are vertically fixed to the outer sides of the bottom of the two columns, and the ends of the connecting rods (second) are bolted to the wall support lifting machine. A horizontal connecting rod parallel to the crossbeam is also provided between the pair of connecting rods (first) at the top. The pair of cantilever beam support frames are horizontally spaced and fixed to the crossbeams and the horizontal connecting rods, respectively. The pair of adjustable cantilever beams are erected and bolted to the pair of cantilever beam support frames. The adjustable cantilever beam includes a cantilever beam, a support bracket, and a lower support bracket. The support bracket includes a base, a sleeve connected to the base, and a first bearing connected to the bottom of the sleeve by a pin. One end of the cantilever beam passes through the sleeve and is supported by the first bearing. The lower support bracket includes a U-shaped support frame, an adjustable screw connected to the top of the support frame, a second bearing and a shaft pressure block located at the bottom of the adjustable screw and connected to the support frame by a pin. The other end of the cantilever beam passes through the support frame and is located at the bottom of the second bearing and the shaft pressure block. Both the support bracket and the lower support bracket are bolted to the cantilever beam support frame. The two ends of the cantilever beam are respectively provided with a first pin hole and a second pin hole. The first pin hole of the cantilever beam, which is close to the box culvert structure to be cast, is connected to the side formwork assembly by a pin. A stop block is installed in the second pin hole at the other end of the cantilever beam.

[0014] In steps S22 and S23, during the process of closing and disassembling the side formwork assembly, the adjustable screw rotates downward to push the second bearing and the axial pressure block to move along the Y-axis, so that the cantilever beam can support the side formwork assembly to rotate around the first bearing of the support in the XY plane to the installation position required for construction, thereby achieving fine adjustment of the installation position of the side formwork assembly.

[0015] Furthermore, in step S24, each supporting frame also includes a pair of caster connecting rods and a pair of casters. The bottom of the pair of connecting rods at the bottom is vertically connected to the pair of caster connecting rods, and the connecting plate fixed to the bottom end of each caster connecting rod is connected to the caster bolt.

[0016] Furthermore, the formwork moving vehicle includes a main frame, telescopic frames, an adjusting device, hollow crossbeams, main rods, support rods, rollers, a winch, and fixed pulleys. The main frame is a frame structure composed of two horizontal and two vertical rods arranged in a crisscross pattern. Two hollow crossbeams are arranged parallel and spaced apart within the main frame, and the hollow crossbeams perpendicularly penetrate the two vertical rods of the main frame. Two telescopic frames are symmetrically arranged on both sides of the two hollow crossbeams. Each telescopic frame includes two parallel and spaced sliding rods, a connecting rod connecting the two sliding rods, an ear plate located in the middle of the connecting rod, and a bracket connecting the sliding rod and the connecting rod. The bracket includes a support lift fixed to the end of the sliding rod and a support plate connected to the top of the lead screw of the support lift. The sliding rods of the two telescopic frames are respectively embedded at both ends of the hollow crossbeams. The poles and supports are arranged parallel to the hollow crossbeam. The main pole is located in the middle of the main frame, and the supports are located between the hollow crossbeam and the main pole. The adjustment device includes an adjustment lift and two support guide rods symmetrically arranged on both sides. The adjustment lift is vertically fixed to the middle of the main pole. The two support guide rods are symmetrically arranged along the axis of the main frame. One end of each support guide rod is connected to the top of the adjustment lift, and the other end of each support guide rod is connected to the ear plate pins of the telescopic frames on both sides. The winch is fixed to the support rod, and the fixed pulley is fixed to the hollow crossbeam. The adjustment lift, winch, and fixed pulley are all arranged along the axis of the main frame. One end of the wire rope is wound around the winch, and the other end passes over the fixed pulley and is connected to the anchor located on the axis of the cast-in-place box culvert structure. Multiple rollers are installed at the bottom of the main frame.

[0017] Step S24 further includes adjusting the height of the support lift of the bracket so that the support plates of multiple brackets are on the same horizontal plane, moving the formwork moving vehicle to the bottom of the support frame, controlling the screw of the adjusting lift to extend and retract along the Y-axis, driving the two telescopic frames to move synchronously in opposite directions along the X-axis through the support guide rod, thereby adjusting the distance between the brackets on the two telescopic frames along the X-axis so that the brackets on the two telescopic frames can correspond to the position of the casters of the support frame, controlling the bottom lift of the support frame to retract so that the support frame can be completely erected on the brackets of the two telescopic frames; the winch winds up the wire rope to shorten the length of the wire rope between the formwork moving vehicle and the anchor, and the formwork moving vehicle carries the support frame and the formwork system to travel along the Z-axis to the next construction section.

[0018] Furthermore, the mold frame moving vehicle also includes two telescopic guide rods. The two telescopic guide rods are respectively vertically connected to both sides of the two longitudinal rods of the main frame. The telescopic guide rods include two hollow cross rods fixed to the ends of the longitudinal rods and two support rods respectively embedded in the two hollow cross rods. The two support rods are installed in opposite directions. The side walls of the hollow cross rods and the support rods are provided with multiple bolt holes at equal intervals. The ends of the two support rods are connected to guide wheels.

[0019] Step S24 further includes, when the formwork moving vehicle is unloaded, keeping both telescopic guide rods in a retracted state, with the formwork system and support frame mounted on the brackets of the two telescopic frames of the formwork moving vehicle, the two support rods of the two telescopic guide rods extending out, and the guide wheels at the ends of the two support rods abutting against the wall of the already poured box culvert structure, and the positioning bolts passing through the bolt holes on the hollow crossbar and support rods and locking them in place, so that the formwork moving vehicle can maintain an equal distance from the wall during sliding.

[0020] Further, in step S21, the top mold assembly includes a top mold panel, multiple horizontal back ribs spaced apart at its bottom, and multiple back rib quick connectors. Each back rib quick connector consists of a U-shaped bending plate, a threaded rod penetrating the bending plate, and multiple nuts. One end of the threaded rod is rigidly connected to the nut, and the other end passes through the connection hole between the bending plate and the top mold panel and is locked in place by the nut. The horizontal back ribs are snapped into the hooks of the bending plate, allowing them to be vertically snapped into the bottom of the top mold panel. The side mold assembly includes a side mold panel, horizontal back ribs, a first vertical back rib, a second vertical back rib, and back rib quick connectors. Multiple horizontal back ribs are connected to one side of the side mold panel via the back rib quick connectors. The first vertical back ribs are vertically spaced and correspond to the positions of the two columns supporting the gantry. The first vertical back ribs are bolted to the second horizontal back rib. The two channel steels of the first vertical back ribs have corresponding elongated holes. The end of the screw of the side formwork lifting machine is embedded in the gap between the two channel steels. The pin passes through the elongated hole of the first vertical back rib and the screw of the side formwork lifting machine and is tightened. The two second vertical back ribs are vertically spaced and correspond to the positions of the two adjustable cantilever beams. The second vertical back ribs are bolted to the second horizontal back rib. The two channel steels of the second vertical back ribs have corresponding elongated holes. The end of the adjustable cantilever beam is embedded in the gap between the two channel steels. The pin passes through the elongated hole of the second vertical back rib and the end of the adjustable cantilever beam and is tightened.

[0021] Furthermore, in step S21, the corner mold frame of the corner mold panel is provided with a first connection hole and a second connection hole at both ends. The top surface of the corner mold frame near the first connection hole has a slot. The corner mold frame is connected to the top mold panel of the top mold assembly through the first connection hole. One end of the steel panel of the top mold panel can be snapped into the slot of the corner mold panel, and the other end of the steel panel of the corner mold panel extends out of the corner mold frame as an extension end. The extension end can be embedded in the slot at the end of the steel panel of the side mold panel. Multiple corner mold lifting machines are symmetrically arranged at both ends along the axis of the top mold assembly, and one end of the corner mold lifting machine is hinged to the top mold. The component edge, with its other end connected to the corner mold panel pin, the corner mold lifting machine includes a lead screw, a connecting rod connected to one end of the lead screw, a screw drive device threaded to the other end of the lead screw, and an upper support fixed to the end of the screw drive device. The upper support is connected to the horizontal back rib of the top mold component pin. The connecting rod at the end of the lead screw is connected to its pin through the connecting hole two of the corner mold skeleton. The screw drive device is connected to the control system signal. Controlling the extension and retraction of the lead screw of the corner mold lifting machine drives the corner mold panel to rotate around the connecting hole one along the end of the top mold component, pushing the corner mold panel out and assembling it with the top mold component.

[0022] Furthermore, each support gantry also includes an adjusting screw vertically connected to the top of the column, and the adjusting screw is bolted to the top formwork assembly; each support gantry also has a gantry bottom sleeve at the bottom of the column, the gantry bottom sleeve is rigidly connected to a vertically set cylinder and a base plate, the base plate is bolted to the bottom lift, the cylinder can be fitted inside the column, and the side wall of the cylinder and the bottom of the column are vertically spaced with multiple through holes, the gantry bottom sleeve is fitted to the bottom of the support gantry and connected by a pin through the through hole, so that the bottom lift can be detachably connected to the bottom of the support frame;

[0023] In step S22, the relative position between the cylinder of the bottom sleeve of the gantry and the column is adjusted to the required construction height, and the two are connected and fixed by a pin through the through hole. The bottom lift is controlled to extend and support the bottom plate of the cast-in-place box culvert structure. The extension and retraction length of the adjusting screw is adjusted to lift the top formwork assembly to the design height. Attached Figure Description

[0024] Figure 1 This is a perspective view of an adjustable trolley formwork system according to an embodiment of the present invention, installed inside a culvert;

[0025] Figure 2 This is a schematic diagram of the template system in one embodiment of the present invention;

[0026] Figure 3 for Figure 2 An enlarged view of part B;

[0027] Figure 4 This is a schematic diagram of the corner mold panel in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the top mold assembly in one embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the quick-connect component with back ribs in one embodiment of the present invention;

[0030] Figure 7 for Figure 2 AA section view;

[0031] Figure 8 This is a perspective view of the support frame in an adjustable trolley mold frame system according to an embodiment of the present invention;

[0032] Figure 9 This is a perspective view of the supporting gantry in one embodiment of the present invention;

[0033] Figure 10 This is a perspective view of an adjustable cantilever beam according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the adjustable horizontal beam in one embodiment of the present invention;

[0035] Figure 12 for Figure 11 CC section view;

[0036] Figure 13 This is a perspective view of the bottom sleeve of the gantry in one embodiment of the present invention;

[0037] Figure 14 This is a schematic diagram showing the dimensional relationships of the main components in an adjustable trolley mold frame system according to an embodiment of the present invention;

[0038] Figure 15 This is a perspective view of a mold frame moving vehicle in one embodiment of the present invention;

[0039] Figure 16 This is a top view of the mold frame moving vehicle in one embodiment of the present invention;

[0040] Figure 17 This is a perspective view of the main frame of the mold frame moving vehicle in one embodiment of the present invention;

[0041] Figure 18 This is a perspective view of the telescopic frame of the mold frame moving vehicle in one embodiment of the present invention;

[0042] Figure 19 for Figure 15 A side view along the Z-axis;

[0043] Figure 20 for Figure 19 A schematic diagram of the telescopic guide rod after it has retracted.

[0044] Figure 21 for Figure 15 A side view along the X-axis;

[0045] Figure 22 This is a schematic diagram of the support rod of the mold frame moving vehicle in one embodiment of the present invention;

[0046] Figures 23 to 27 A schematic diagram illustrating the various steps involved in constructing a box culvert using an adjustable trolley formwork system;

[0047] Figure 28 This is a perspective view of the construction process of an adjustable trolley formwork system according to an embodiment of the present invention.

[0048] The numbers in the diagram are as follows:

[0049] Box culvert structure 1 already poured; box culvert structure 2 to be poured;

[0050] Support frame 100; Support gantry 10; Column 11; Horizontal beam 12; Caster connecting rod 13; Secondary horizontal beam 14; Connecting rod one 15; Connecting rod two 16; Horizontal connecting rod 17; Adjustable horizontal beam 20; First horizontal beam 21; Second horizontal beam 23; Side plate 24; Adjusting screw 41; Side formwork lifting machine 42; Wall support lifting machine 43; Gantry bottom sleeve 45; Cylinder 451; Base plate 452; Bottom lifting machine 46; Caster 47; Angle formwork lifting machine 50; Screw 51; Connecting rod 52; Screw drive device 54; Upper support 55; Working platform 60;

[0051] Template system 200; Top formwork panel 211; Horizontal back rib 1 212; Back rib quick connector 213; Bending plate 213a; Screw 213b; Side formwork panel 224; Horizontal back rib 225; First vertical back rib 226; Second vertical back rib 227; Corner formwork frame 231; Steel panel of corner formwork panel 232; Slot 234; Connecting hole 1 235; Connecting hole 2 236; Extension end 237; Adjustable cantilever beam 30; Cantilever beam 31; Sleeve 32; Base 33; First bearing 34; Support frame 35; Adjustable screw 36; Second bearing 37; Pin hole 1 38; Pin hole 2 39;

[0052] 300; main frame; 310; hollow crossbar; 311; longitudinal bar; 312; support rod; 314; guide wheel; 315; main rod; 316; hollow crossbeam; 317; support rod; 318; telescopic frame; 320; connecting rod; 321; sliding rod; 322; ear plate; 323; support lift; 324; pallet; 325; adjusting lift; support guide rod; 342; roller; 350; control system; 400; wire rope; 510; anchor; 500. Detailed Implementation

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clearly illustrate the embodiments of the present invention. For ease of description, the terms "upper" and "lower" used below are consistent with the upper and lower directions in the drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0054] This embodiment takes the concrete pouring construction of a box culvert as an example. An XYZ rectangular coordinate system is established with the width direction of the box culvert as the X-axis, the height direction as the Y-axis, and the length extension direction as the Z-axis. The box culvert in this embodiment consists of a pre-cast box culvert structure 1 and a proposed box culvert structure 2 connected as a single unit. The pre-cast box culvert structure 1 includes a pre-cast base slab and walls of a certain height. The proposed box culvert structure 2 is located on top of the pre-cast box culvert structure 1. The following section combines... Figures 1 to 22 The adjustable trolley mold frame system of this embodiment includes:

[0055] The formwork system 200 includes a top formwork assembly, a side formwork assembly, and a corner formwork panel, which correspond to the shape and position of the top surface, side surface, and corner of the inner cavity of the box culvert structure 2 to be cast.

[0056] The support frame 100 includes a support gantry 10, adjustable horizontal beams 20, adjustable cantilever beams 30, a corner formwork lift 50, a side formwork lift 42, a wall support lift 43, and a bottom lift 46. The support gantry 10 is a rectangular frame formed by two vertically and horizontally spaced columns 11 and two horizontal beams 12. Two support gantry 10s are vertically spaced, and multiple adjustable horizontal beams 20 are horizontally arranged and bolted between the two support gantry 10s to form the main frame. At least two adjustable cantilever beams 30 are mounted on the top horizontal beam 12 of each support gantry 10. The other end is detachably connected to the side formwork assembly. At least two pairs of side formwork lifters 42 and a pair of wall support lifters 43 are symmetrically arranged on the two columns 11 of each support gantry 10. The other end of the side formwork lifter 42 is detachably connected to the side formwork assembly. The other end of the wall support lifter 43 abuts against the wall of the cast-in-place box culvert structure 1. Multiple corner formwork lifters 50 are symmetrically arranged at both ends of the top formwork assembly along its axis. One end of the corner formwork lifter 50 is hinged to the edge of the top formwork assembly, and the other end is connected to the corner formwork panel pin. A bottom lifter 46 is connected to the bottom of each column 11 of the support gantry 10.

[0057] The formwork moving vehicle 300 includes a main frame 310, a telescopic frame 320, an adjustment device, and rollers 350. Multiple rollers 350 are installed at the bottom of the main frame 310. Two telescopic frames 320 are symmetrically arranged and fitted on both sides of the main frame 310. The adjustment device includes an adjustment lift 341 vertically arranged along the axis of the main frame 310, and two support guide rods 342 symmetrically arranged on both sides of the adjustment lift 341. One end of each support guide rod 342 is connected to the top of the adjustment lift 341, and the other end of each support guide rod 342 is connected to the two telescopic frames 320 respectively. The extension and retraction of the adjustment lift 341 drives the two telescopic frames 320 to move synchronously in opposite directions along the axis, so that the ends of the two telescopic frames 320 can correspond to the positions of the casters 47 of the support frame 100. The formwork moving vehicle 300 is set at the bottom of the support frame 100 and is used to support and move the support frame 100 and the formwork system 200 after demolding to the next construction section.

[0058] The control system 400 is mounted on the support frame 100 and is at least signal-connected to the corner formwork lift 50 and the bottom lift 46.

[0059] The adjustable trolley formwork system of this embodiment includes a support frame 100, a formwork system 200, a formwork moving trolley 300, and a control system 400. Two vertically spaced support gantry frames 10 and multiple adjustable horizontal beams 20 positioned between them constitute the main body of the support frame 100. Adjusting the extension length of the adjustable horizontal beams 20 ensures the width of the support frame 100 meets construction requirements. The bottom lifting mechanism 46 of the support gantry 10 adjusts the height of the support frame 100 so that the height of the top formwork assembly is adapted to the height of the box culvert structure 2 to be poured. The screw ends of the side formwork lifting mechanisms 42 on the outer sides of the columns 11 of the two support gantry frames 10 are connected to the pin shafts of the side formwork assembly, and are connected to the top of the crossbeams 12 of the support gantry frame 10. One end of each pair of adjustable cantilever beams 30 is connected to the side formwork assembly via a pin. The adjustable cantilever beams 30 can support the side formwork assembly and drive it to move back and forth along the X-axis. They can also finely adjust the height of the side formwork assembly along the Y-axis. Multiple corner formwork lifts 50 are hinged to both ends of the top formwork assembly, with their other ends connected to the corner formwork panels. The corner formwork lifts 50 extend and retract, causing the corner formwork panels to rotate around the ends of the top formwork assembly. The adjustable horizontal beams, adjustable cantilever beams, lifts, and control system mounted on the support frame 100 work together to automatically and accurately adjust the closing positions of the top formwork assembly, side formwork assembly, and corner formwork panels, ensuring the accuracy of the concrete pouring structure and improving the adaptability of the support frame 100 to concrete structures with different cross-sectional dimensions. This improves the standardization level and turnover efficiency of the components of the support frame 100; the two telescopic frames 320 of the formwork moving vehicle 300 are symmetrically arranged and sleeved on both sides of the main frame 310. One end of the two support guide rods 342 of the adjustment device is connected to the adjustment lift 341 on the main frame 310, and the other end is connected to the pin shafts of the two telescopic frames 320 respectively. The extension and retraction of the adjustment lift 341 drives the two telescopic frames 320 to move synchronously in opposite directions along the axis, so that the ends of the two telescopic frames 320 can correspond to the positions of the casters 47 of the support frame 100. After the bottom lift 46 of the support frame 100 is retracted, the demolded formwork system 200 and the support frame 100 can be supported on the formwork moving vehicle 300 and move with it. The system moves to the next construction section, repeating this process section by section to complete the concrete pouring of the box culvert. The adjustable trolley formwork system utilizes adjustable horizontal beams 20 and adjustable cantilever beams 30 installed on the support frame 100, and the elevator is detachably connected to the formwork system 200. This enables automated adjustment of the width and height of the formwork system 200, as well as automated closing and dismantling of the formwork system 200. Moreover, the formwork moving vehicle 300 can carry the support frame 100 and the formwork system 200 as a whole to move to the next construction section. This adjustable trolley formwork system has a high degree of automation, high equipment turnover efficiency, and safe and efficient overall movement, effectively improving the level of industrialized construction, increasing construction efficiency, enhancing construction quality, and ensuring construction safety.

[0060] In this embodiment, the top mold panel 211, side mold panel 224, and corner mold panel are all made of a frame welded from structural steel, and steel panels fixed to the outside of the frame. The horizontal back ribs and vertical back ribs are both made of two channel steels with openings facing outwards and spaced apart, and structural steel materials welded to the webs of the two channel steels respectively. Figure 5 and Figure 6 As shown, the top mold assembly includes a top mold panel 211, multiple horizontal back ribs 212 spaced apart at its bottom, and multiple quick-connect fittings 213 for the back ribs. Each quick-connect fitting 213 consists of a U-shaped bending plate 213a, a screw 213b passing through the bending plate 213a, and multiple nuts. One end of the screw 213b is rigidly connected to a nut, and the other end passes through the connection hole between the bending plate 213a and the top mold panel 211 and is locked in place by the nut. The horizontal back ribs 212 are snapped into the hooks of the bending plate 213a, allowing them to be vertically snapped into the bottom of the top mold panel 211. The multiple horizontal back ribs 212 are assembled onto the top mold panel 211 via the quick-connect fittings 213, making assembly and disassembly convenient and quick, thus improving the installation efficiency of the template system 200.

[0061] like Figure 7 As shown, the side mold assembly includes a side mold panel 224, a second horizontal back rib 225, a first vertical back rib 226, a second vertical back rib 227, and a back rib quick connector. Multiple second horizontal back ribs 225 are connected to one side of the side mold panel 224 through the back rib quick connector. Specifically, the screw of the back rib quick connector passes through the side mold panel 224 and is locked and fixed by a nut. The second horizontal back rib 225 is snapped into the hook at the end of the bending plate, so that the second horizontal back rib 225 can be vertically snapped into one side of the side mold panel 224. The fastening between the side mold panel 224 and the second horizontal back rib 225 is achieved by rotating and tightening the nut. Two first vertical back ribs 226 are vertically spaced and correspond to the positions of the two columns 11 of the supporting gantry 10. The first vertical back ribs 226 are bolted to the second horizontal back rib 225. The two channel steels of the first vertical back ribs 226 are provided with corresponding elongated holes. The end of the screw of the side mold lifting machine 42 is embedded in the gap between the two channel steels. The pin passes through the elongated hole of the first vertical back rib 226 and the screw of the side mold lifting machine 42 and is fastened. The side mold lifting machine 42 can move vertically along the elongated hole of the first vertical back rib 226 without bearing the weight of the side mold assembly. Two second vertical back ribs 227 are vertically spaced and correspond to the positions of two adjustable cantilever beams 30. The second vertical back ribs 227 are bolted to the second horizontal back rib 225. The two channel steels of the second vertical back ribs 227 are provided with corresponding elongated holes. The end of the adjustable cantilever beam 30 is inserted into the gap between the two channel steels. The pin passes through the elongated hole of the second vertical back rib 227 and the end of the adjustable cantilever beam 30 and is fastened. The adjustable cantilever beam 30 carries the side mold assembly and can drive the side mold assembly to move along the X and Y directions for fine-tuning of its position.

[0062] like Figures 2 to 4As shown, the shape of the corner formwork panel matches the corner of the box culvert structure 2 to be cast. The corner formwork frame 231 has a first connection hole 235 and a second connection hole 236 at both ends. A groove 234 is located on the top surface of the corner formwork frame 231 near the first connection hole 235. The corner formwork frame 231 is pin-connected to the top formwork panel 211 of the top formwork assembly via the first connection hole 235. One end of the steel panel of the top formwork panel 211 can be snapped into the groove 234 of the corner formwork panel. The other end of the steel panel 232 of the corner formwork panel extends out of the corner formwork frame 231 as an extension end 237, which can be embedded into the groove at the end of the steel panel of the side formwork panel 224. Because the steel panels at the connection points of the top formwork panel 211, the corner formwork panel, and the side formwork panel 224 are sequentially stacked, the formwork panel connections are tightly joined, ensuring the casting quality of the box culvert concrete structure.

[0063] like Figure 2 and Figure 3 As shown, the corner mold lifting machine 50 includes a lead screw 51, a connecting rod 52 connected to one end of the lead screw 51, a screw drive device 54 threadedly connected to the other end of the lead screw 51, and an upper support 55 fixed to the end of the screw drive device 54. The upper support 55 is connected to the horizontal back rib 212 of the top mold assembly by a pin. The connecting rod 52 at the end of the lead screw 51 is connected to its pin through the connecting hole 236 of the corner mold frame 231. The screw drive device 54 is connected to the control system 400 by a signal. The control system 400 controls the extension and retraction of the lead screw 51 of the corner mold lifting machine 50, which drives the corner mold panel to rotate around the connecting hole 235 as the center along the end of the top mold assembly, thereby realizing the automatic mold closing and demolding of the corner mold panel.

[0064] like Figure 8 and Figure 9 As shown, each support gantry 10 also includes two pairs of connecting rods 15 and one pair of connecting rods 16. The two pairs of connecting rods 15 are vertically fixed to the connection points of the columns 11 and the crossbeams 12, respectively. One end of the connecting rod 15 near the box culvert structure 2 to be cast is bolted to the side formwork lift 42, and the other end of the connecting rod 15 is bolted to the adjustable horizontal beam 20. The pair of connecting rods 16 are vertically fixed to the outer sides of the bottom of the two columns 11, and the ends of the connecting rods 16 are bolted to the wall support lift 43. Each support gantry 10 is also provided with a cantilever beam support frame 18. A horizontal connecting rod 17 parallel to the crossbeam 12 is provided between the pair of connecting rods 15 at the top. The pair of cantilever beam support frames 18 are horizontally spaced and fixed to the crossbeams 12 and the horizontal connecting rods 17, respectively. A support plate is provided on the top of the cantilever beam support frame 18 for fixing the adjustable cantilever beam 30. Since a pair of connecting rods 15, crossbeam 12 and horizontal connecting rod 17 together form a closed rectangular support plane, they can provide stable support for the adjustable cantilever beam 30.

[0065] like Figure 8 and Figure 9As shown, each support frame 10 also includes an adjusting screw 41 vertically connected to the top of the column 11. The connecting plate fixed to the top of the adjusting screw 41 is bolted to the cross back rib 212 of the top mold assembly. The upper and lower support internal threads of the adjusting screw 41 are left-handed and right-handed, respectively, for fine-tuning the height of the top mold assembly.

[0066] like Figure 13 As shown, each support gantry 10 has a bottom sleeve 45 at the bottom of its column 11. The bottom sleeve 45 is formed by a vertically arranged cylinder 451 and a base plate 452. The base plate 452 is bolted to the bottom lifting mechanism 46. The cylinder 451 can be fitted inside the column 11. The side wall of the cylinder 451 and the bottom of the column 11 are vertically spaced with multiple through holes. The bottom sleeve 45 is fitted on the bottom of the support gantry 10 and connected by a pin through the through hole, so that the bottom lifting mechanism 46 can be detachably connected to the bottom of the support frame 100. The height of the support gantry 10 can be indirectly adjusted by changing the relative position between the bottom sleeve 45 and the column 11.

[0067] like Figure 8 and Figure 9 As shown, each support gantry 10 also includes a pair of caster connecting rods 13 and a pair of casters 47. The bottom of the pair of connecting rods 15 located at the bottom is vertically connected to the pair of caster connecting rods 13. The connecting plate fixed to the bottom end of each caster connecting rod 13 is bolted to the caster 47. The casters 47 of the support gantry 10 can support the top of the two telescopic frames 320 of the mold frame moving vehicle 300.

[0068] like Figure 8 and Figure 9 As shown, each support gantry 10 also includes a secondary crossbeam 14 arranged in parallel between a pair of crossbeams 12, and the support frame 100 also includes a working platform 60 mounted on top of the two secondary crossbeams 14. The working platform 60 is used to provide a safe and reliable support surface for construction workers to work at height.

[0069] like Figure 10As shown, the adjustable cantilever beam 30 includes a cantilever beam 31, a support bracket, and a pressing bracket. The support bracket includes a base 33, a sleeve 32 connected to the base 33, and a first bearing 34 pinned to the bottom of the sleeve 32. One end of the cantilever beam 31 passes through the sleeve 32 and is supported by the first bearing 34. The pressing bracket includes a U-shaped support frame 35, an adjustable screw 36 connected to the top of the support frame 35, a second bearing 37 located at the bottom of the adjustable screw 36 and pinned to the support frame 35, and a pressing bracket. The cantilever beam 31 has one end that passes through the support frame 35 and is located at the bottom of the second bearing 37 and the axial pressure block. Both the support support and the lower pressure support are bolted to the cantilever beam support frame 18. The two ends of the cantilever beam 31 are respectively provided with pin hole 1 38 and pin hole 2 39. The pin hole 1 38 of the cantilever beam 31 near the box culvert structure 2 to be cast is connected to the pin shaft of the second vertical back rib 227 of the side formwork assembly. A stop block (not shown in the figure) is installed in the pin hole 2 39 at the other end of the cantilever beam 31 to prevent the cantilever beam 31 from sliding out of the lower pressure support. The adjustable screw 36 rotates downward to push the second bearing 37 and the axial pressure block to move along the Y-axis, so that the cantilever beam 31 can support the side formwork assembly to rotate a certain angle around the first bearing 34 of the support support in the XY plane. This not only allows for fine adjustment of the installation position of the side formwork assembly, but also facilitates the rapid closing and disassembly of the side formwork assembly.

[0070] like Figure 11 and Figure 12 As shown, the adjustable horizontal beam 20 includes a first horizontal beam 21 made of I-beams and a second horizontal beam 23 made of two channel steels spaced apart and opposite to each other. The web of the first horizontal beam 21 is adapted to the gap between the two channel steels of the second horizontal beam 23, so that the first horizontal beam 21 can be fitted into the gap of the second horizontal beam 23 and slide relative to each other. The webs of the first horizontal beam 21 and the second horizontal beam 23 are provided with multiple bolt holes spaced apart. The positioning bolts pass through the bolt holes of the first horizontal beam 21 and the second horizontal beam 23 and are locked and fixed. The other ends of the first horizontal beam 21 and the second horizontal beam 23 are vertically connected to side plates 24 with bolt holes. The side plates 24 of the first horizontal beam 21 and the second horizontal beam 23 are respectively bolted to the connecting rods 15 of the two side support frames 10. By adjusting the length of the adjustable horizontal beam 20, the width of the support frame 100 along the X-axis direction is adapted to the width of the box culvert structure 2 to be cast.

[0071] like Figures 15 to 18 As shown, the formwork moving vehicle 300 also includes hollow crossbeams 317, an adjusting lift 341, and supporting guide rods 342. The main frame 310 is a frame structure composed of at least two horizontal bars and two vertical bars 312 arranged in a crisscross pattern. The two hollow crossbeams 317 are parallel and spaced apart, and the hollow crossbeams 317 vertically penetrate the two vertical bars 312 of the main frame. Two telescopic frames 320 are symmetrically arranged on both sides of the main frame 310. Figure 18As shown, the telescopic frame 320 includes two parallel and spaced-apart sliding rods 322, a connecting rod 321 connecting the two sliding rods 322, an ear plate 323 disposed in the middle of the connecting rod 321, and a bracket connecting the sliding rods 322 and the connecting rod 321. The bracket includes a support lift 324 fixed to the end of the sliding rod 322, and a support plate 325 connected to the top of the lead screw of the support lift 324. The bracket is used to support the support frame 100 and the template system 200 after demolding. Figure 15 and Figure 16 As shown, the sliding rods 322 of the two telescopic frames 320 are respectively embedded at both ends of the hollow crossbeam 317. The adjusting lift 341 is fixed in the middle of the main frame 310. Two support guide rods 342 are symmetrically arranged along the axis of the main frame 310. One end of each of the two support guide rods 342 is connected to the top of the adjusting lift 341. The other end of each of the two support guide rods 342 is connected to the ear plate 323 pin of the connecting rod 321 of the telescopic frames 320 on both sides. The screw of the adjusting lift 341 extends and retracts along the Y-axis. Through the support guide rods 342, the two telescopic frames 320 move synchronously in opposite directions along the X-axis, thereby adjusting the spacing of the brackets on the two telescopic frames 320 along the X-axis, so that the brackets on the two telescopic frames 320 can correspond to the position of the column 11 of the support frame 100. The formwork moving vehicle 300 can carry the support frame 100 and the demolded formwork system 200 to the next construction section.

[0072] like Figures 19 to 22 As shown, the mold frame moving vehicle 300 also includes telescopic guide rods. Two telescopic guide rods are vertically connected to both sides of the two longitudinal rods 312, that is, the telescopic guide rods replace the crossbars and together with the longitudinal rods 312 form the main frame 310. The telescopic guide rods include two hollow crossbars 311 fixed to the ends of the longitudinal rods 312 and two support rods 314 respectively embedded in the two hollow crossbars 311. The two support rods 314 are installed in opposite directions. The hollow crossbars 311 and the support rods The side walls of 314 are provided with multiple bolt holes at equal intervals. The ends of the two support rods 314 are connected to guide wheels 315. After the two support rods 314 extend in opposite directions and the guide wheels 315 abut against the wall of the cast-in-place box culvert structure 1, the positioning bolts pass through the bolt holes on the hollow crossbar 311 and the support rods 314 and are locked and fixed, so that the formwork moving vehicle 300 can maintain an equal distance from the wall during the sliding process, and avoid the formwork moving vehicle 300 from deviating during the movement and causing safety accidents.

[0073] like Figure 15 and Figure 28As shown, the formwork moving vehicle 300 also includes a main rod 316 and a support rod 318 arranged parallel to the hollow crossbeam 317. The main rod 316 is located in the middle of the main frame, and the support rod 318 is located between the hollow crossbeam 317 and the main rod 316. An adjusting elevator 341 is vertically fixed to the main rod 316, a winch is fixed to the support rod 318, and a fixed pulley is fixed to the hollow crossbeam 317. The adjusting elevator 341, the winch, and the fixed pulley (not shown in the figure) are all arranged along the axis of the main frame. One end of the wire rope 510 is wound around the winch, and the other end passes over the fixed pulley and is connected to the anchor 500 located on the axis of the cast-in-place box culvert structure 1. After the formwork moving vehicle 300 carries the support frame 100 and the formwork system 200 after demolding, the winch retracts the wire rope 510, and the formwork moving vehicle 300 can automatically move the formwork system 200 and the support frame 100 as a whole along the construction route.

[0074] In this embodiment, the side mold lifting machine 42, the bottom lifting machine 46, the support lifting machine 324, and the adjusting lifting machine 341 can all be screw jacks. Of course, this is just an example, and the lifting machine is not limited to this.

[0075] Combination Figures 1 to 13 The installation method of the adjustable trolley mold frame system in this embodiment is explained below, with specific steps as follows:

[0076] S10: Prefabricate top formwork components, side formwork components, and corner formwork panels that meet the dimensions required for box culvert construction, such as... Figures 2 to 7 As shown, the corner formwork lifting machine 50 pin is connected to the end of the horizontal back rib 212 of the top formwork assembly. The top formwork panel 211 is not installed yet. The side formwork assembly is assembled. Wooden blocks are laid on the ground. The side formwork panel 224 is laid flat on the wooden blocks with the steel panel facing down. The wooden blocks protect the steel panel. The back rib quick connector 213 is used to fix multiple horizontal back ribs 225 to the side formwork panel 224. Then, multiple first vertical back ribs 226 and multiple second vertical back ribs 227 are bolted to the horizontal back ribs 225.

[0077] S12: Send Figures 8 to 12As shown, assembling the support frame 100: Adjust the adjustable horizontal beam 20 to the designed length and lock it in place. Place two support frames 10 flat. Bolt the bottom lifting platform 46 to the bottom of the columns 11 of the two support frames 10 and adjust it to the designed height. Install four adjustable horizontal beams 20 on one of the support frames 10 and erect it for temporary support. Bolt the other support frame 10 to the other end of the four adjustable horizontal beams 20 to form the main support structure. Construction workers install other components of the support frame 100 from bottom to top. Install the wall support lifting platform 43 on the connecting rod 2 16. Install the side formwork lifting platform 42 on the outside of the connecting rod 1 15 at the bottom. Lay the working platform 60 on the top of the two secondary crossbeams 14. Then... Construction workers stand on the work platform 60 and install multiple side formwork lifts 42 on the outside of the connecting rod 15 at the top. They install cantilever beam support frames 18 on the top of the crossbeam 12 and the horizontal connecting rod 17. The adjustable cantilever beam 30 is not installed temporarily to prevent it from falling. An adjusting screw 41 is installed on the top of the column 11. Four bottom lifts 46 are placed on the ground to suitable installation positions. The support frame 100, assembled by four-point lifting, is placed on top of the four bottom lifts 46. The bottom lifts 46 are bolted to the bottom of the column 11. The electrical control box of the control system 400 is installed on the support frame 100. Construction workers connect the adjustable cantilever beam 30 to the cantilever beam support frame 18 on the work platform 60 and temporarily fix the adjustable cantilever beam 30.

[0078] S13: Assembled formwork system 200: Hoist the hinged top formwork assembly and corner formwork lift 50 to the top of the support frame 100, bolt the horizontal back rib 212 of the top formwork assembly to the upper support of the adjusting screw 41, hoist the top formwork panel 211 and place it on top of the horizontal back rib 212, and connect and fix the two using the back rib quick connector 213. The electrical control box of the control system 400 is electrically connected to the corner formwork lift 50, the side formwork lift 42, the bottom lift 46, and the wall support lift 43, and the electrical control debugging of the extension and retraction of each lift is performed; adjust the side formwork lift 4... 2. Adjust the adjustable cantilever beam 30 to a suitable length, hoist the side formwork assembly so that the second vertical back rib 227 and the adjustable cantilever beam 30 are connected by a pin. The adjustable cantilever beam 30 bears the weight of the side formwork assembly. Adjust the side formwork lift 42 to a suitable length. The screw of the side formwork lift 42 is connected to the first vertical back rib 226 by a pin. Adjust the screw of the corner formwork lift 50 to a suitable length and connect it to the corner formwork frame 231 by a pin. The extension and retraction of the corner formwork lift 20 can drive the corner formwork panel to rotate around the end of the top formwork assembly, which facilitates the closing and disassembly of the corner formwork panel and avoids conflict and collision between the corner formwork panel and the side formwork assembly.

[0079] Combination Figures 1 to 14 The adjustment method of the adjustable trolley mold frame system in this embodiment is explained in the following steps:

[0080] Height adjustment steps of the side formwork assembly: In the closed mold state, rotate the adjustable screw 36 of the adjustable cantilever beam 30 to press down the support, so that the second bearing 37 and the axial pressure block push the cantilever beam 31 to carry the side formwork assembly to rotate a certain angle around the first bearing 34 of the support in the XY plane until the side formwork panel 224 and the corner formwork panel are completely fitted. Adjust the height of the side formwork assembly by using the adjustable cantilever beam 30. On the one hand, it can avoid the problem that the side formwork panel 224 and the corner formwork panel are not tightly fitted due to insufficient height of the side formwork assembly. On the other hand, it can avoid the torsion of the side formwork assembly in the YZ plane due to different heights on both sides after the installation of the side formwork assembly is completed.

[0081] Height adjustment steps of the top formwork assembly: In the closed mold state, use a surveying instrument to detect the flatness of the top formwork assembly, and finely adjust the height of the top formwork assembly by rotating the nut of the adjusting screw 41 until the levelness of the top formwork assembly meets the construction requirements. Fine-tuning the height of the top formwork assembly by using the adjusting screw 41 can avoid the problem that the top formwork assembly is uneven in the XZ plane due to installation errors.

[0082] As Figure 14 shown, the size adjustment steps of the support frame 100 are as follows:

[0083] S1: Adjust the length of the adjustable horizontal beam 20, and adjust the size of the support frame 100 along the X-axis direction so that l satisfies the following formula (1):

[0084] Minimum value of N ≤ (L - l) / 2 - M ≤ Maximum value of N (Formula 1)

[0085] Where, L is the net distance between the two side walls of the box culvert structure 2 to be poured;

[0086] l is the width of the support frame 100;

[0087] M is the thickness of the side formwork assembly;

[0088] N is the total length of the side formwork lifter 42;

[0089] S2: Adjust the size of the support frame 100 along the Y-axis direction so that h satisfies the following formula (2):

[0090] (Minimum value of (K + G)) < H - J - h < (Maximum value of (K + G)) (Formula 2)

[0091] Where, H is the net height of the box culvert structure 2 to be poured;

[0092] h is the height of the column 11 of the support frame 100;

[0093] J is the thickness of the top formwork assembly;

[0094] K is the height of the adjusting screw 41;

[0095] G represents the height of the bottom lift, which is 46.

[0096] The following is combined with Figures 23 to 28 The method of using the adjustable trolley mold frame system of the present invention is explained in the following steps:

[0097] S21: As Figure 23 As shown, the concrete pouring of the precast box culvert structure 1 is completed in advance using traditional formwork. The precast box culvert structure 1 includes a base slab cast as a whole and a wall of a certain height. After the concrete meets the design strength requirements, the assembled support frame 100 and formwork system 200 are placed on the precast box culvert structure 1 and located in the first construction section of the box culvert structure 2 to be poured.

[0098] S22: After the support frame 100 is in place, control the extension of the wall support lifts 43 on both sides of the support frame 100 to abut against the wall of the already poured box culvert structure 1, control the extension of the bottom lift 46 to support the bottom plate, and at the same time lift the top formwork assembly to the design height, control the extension of the screw 51 of the corner formwork lift 50 to push the corner formwork panel out and assemble it with the top formwork assembly, the slot 234 of the corner formwork frame 231 is engaged with the protruding edge of the top formwork panel 211, control the extension of the side formwork lift 42 to push the side formwork assembly out and assemble it with the corner formwork panel, the extension end 237 of the corner formwork panel is engaged with the end slot of the side formwork panel 224, that is, the formwork system 200 is completed in the order of first assembling the top formwork assembly, then assembling the corner formwork panel, and finally assembling the side formwork assembly. Check and adjust the width and height of the support frame 100 and the formwork system 200 until the construction requirements are met.

[0099] S23: Tie the reinforcing bars for the walls and top slab of the proposed box culvert structure 2, install the external side formwork and end cap formwork, and reinforce them with tie rods and side formwork assemblies. Pour the concrete for the walls and top slab. After the concrete reaches the design strength, ... Figure 24 As shown, the wall support elevator 43 is controlled to retract and leave the wall of the cast-in-place box culvert structure 1. The side formwork elevator 42, corner formwork elevator 50 and bottom elevator 46 are controlled to retract in sequence. The formwork system 200 is opened in the order of opening the side formwork components, then opening the corner formwork panels, and finally opening the top formwork components.

[0100] S24: As Figure 25 As shown, the formwork moving vehicle 300 is moved to the bottom of the support frame 100 so that the ends of the two telescopic frames 320 can correspond to the positions of the columns 11 of the support frame 100. The bottom lifting machine 46 is retracted so that the support frame 100 and the formwork system 200 can be supported as a whole by the formwork moving vehicle 300. The formwork moving vehicle 300 is controlled to move to the next construction section of the box culvert structure 2 to be poured.

[0101] S25: Repeat steps S22 to S24 until the concrete pouring construction of the proposed box culvert structure 2 is completed segment by segment.

[0102] The adjustable trolley formwork system of the present invention is used in the following manner: the assembled support frame 100 and formwork system 200 are placed in the first construction section of the box culvert structure 2 to be poured; the wall support lift 43 extends and supports the wall of the already poured box culvert structure 1; the bottom lift 46 is controlled to extend and lift the top formwork assembly to the designed height; the corner formwork lift 50 is controlled to extend and push the corner formwork panel to assemble with the top formwork assembly; the side formwork lift 42 is controlled to extend and push the side formwork assembly out and assemble with the corner formwork panel; the formwork system 200 is closed in the following order: first the top formwork assembly, then the corner formwork panel, and finally the side formwork assembly; the box culvert to be poured is then constructed. After the construction of the wall and top slab of the current construction section of Structure 2 is completed, the wall support elevator 43 is controlled to retract and move away from the wall. The side formwork elevator 42, corner formwork elevator 50, and bottom elevator 46 are controlled to retract in sequence. The side formwork components are opened, then the corner formwork panels are opened, and finally the top formwork components are opened to realize the formwork construction of the formwork system 200. The bottom elevator 46 retracts, so that the support frame 100 and the formwork system 200 can be supported as a whole on the formwork moving vehicle 300. The formwork moving vehicle 300 is controlled to move to the next construction section of the box culvert structure 2 to be poured. This process is repeated until the concrete pouring construction of the box culvert structure 2 to be poured is completed section by section. This method utilizes the overlapping of steel panels at the connection points of the top formwork assembly, corner formwork panels, and side formwork assemblies to achieve seamless splicing, preventing grout leakage from affecting the concrete pouring quality. The multi-angle telescopic adjustable components on the support frame 100 are detachably connected to the formwork system 200, enabling automated adjustment of the width and height of the formwork system 200, as well as automated closing and dismantling of each formwork component. Furthermore, the formwork moving vehicle 300 can carry the support frame 100 and the dismantled formwork system 200 and move them as a whole to the next construction section of the box culvert structure 2 to be poured. This method features a high degree of automation, high equipment turnover efficiency, safe and efficient overall movement, improved industrialized construction level, enhanced construction efficiency and quality, and ensured construction safety.

[0103] In step S21, the extension length of the adjustable horizontal beam 20 is determined according to the width of the box culvert structure 2 to be cast. After adjusting the relative position of the first horizontal beam 21 and the second horizontal beam 23 to the required length for construction, the positioning bolts pass through the bolt holes of the first horizontal beam 21 and the second horizontal beam 23 and are locked and fixed.

[0104] In steps S22 and S23, during the process of closing and disassembling the side mold assembly, the adjustable screw 36 rotates downward to push the second bearing 37 and the axial pressure block to move along the Y-axis, so that the cantilever beam 31 can support the side mold assembly to rotate around the first bearing 34 of the support base in the XY plane to the installation position required for construction, thereby achieving fine adjustment of the installation position of the side mold assembly.

[0105] Step S24 further includes adjusting the telescopic height of the adjusting lift 341 of the formwork moving vehicle 300, pushing the two telescopic frames 320 to move in opposite directions along the X-axis, adjusting the height of the support lift 324 of the bracket so that the support plates 325 of multiple brackets are on the same horizontal plane and maintain a certain distance from the casters 47, keeping the telescopic guide rod in the retracted state, running the formwork moving vehicle 300 to the bottom of the support frame 100 so that the support plates 325 of multiple brackets correspond to the positions of the casters 47 of the support frame 100, controlling the bottom lift 46 of the support frame 100 to retract so that the support frame 100 can be completely erected on the brackets of the two telescopic frames 320; the winch winds up the wire rope to shorten the length of the wire rope between the formwork moving vehicle 300 and the anchor 500, and the formwork moving vehicle 300 carries the support frame 100 and the formwork system 200 to travel along the Z-axis to the next construction section. One end of the wire rope 510 is wound around a winch, and the other end passes over a fixed pulley and connects to the anchor 500. The winch winds up the wire rope 510, shortening the length of the wire rope 510 between the formwork moving vehicle 300 and the anchor 500. The formwork moving vehicle 300 carries the support frame 100 and the formwork system 200 and moves along the Z-axis to the next construction section. Due to the addition of the winch and anchor 500, the support frame 100 and the formwork system 200 are automatically moved to the next construction section along the construction route by means of traction using the wire rope 510, making the movement efficient and safe. The telescopic guide rods on both sides of the main frame 310 have adjustable extension lengths, which can flexibly adapt to the construction of box culvert concrete structures with different structures and cross-sectional dimensions, and improve the stability of the formwork moving vehicle 300 during movement.

[0106] Step S24 further includes, with the formwork moving vehicle 300 unloaded, keeping both telescopic guide rods in a retracted state, the formwork system 200 and the support frame 100 mounted on the brackets of the two telescopic frames 320 of the formwork moving vehicle 300, the two support rods 314 of the two telescopic guide rods extending out, so that the guide wheels 315 maintain a certain small distance from the wall of the already poured box culvert structure 1, the positioning bolts pass through the bolt holes on the hollow crossbar 311 and the support rod 314 and are locked and fixed, so that the formwork moving vehicle 300 can maintain an equal distance from the wall during the sliding process, the support frame 100 and the formwork system 200 after demolding are supported on the formwork moving vehicle 300 and travel along the axis of the already poured box culvert structure to the next construction section of the box culvert structure 2 to be poured.

[0107] In step S22, the relative position between the cylinder 451 of the bottom sleeve 45 of the gantry and the column 11 is adjusted to the required construction height, and the two are connected and fixed by a pin through the through hole. The bottom lifting machine 46 is controlled to extend and support the bottom plate of the cast-in-place box culvert structure 1. The extension length of the adjusting screw 41 is adjusted to lift the top formwork assembly to the design height.

[0108] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the claims.

Claims

1. A method of using an adjustable trolley formwork system, the adjustable trolley formwork system comprising a formwork system, a support frame, a formwork moving trolley, and a control system; the support frame comprising a support gantry, adjustable horizontal beams, adjustable cantilever beams, a corner formwork lift, a side formwork lift, a wall support lift, and a bottom lift; the support gantry is a rectangular frame formed by two vertically and horizontally spaced columns and two horizontal beams connected together, the two support gantry are vertically spaced apart, and multiple adjustable horizontal beams are horizontally arranged and bolted between the two support gantry to form the main frame; each support gantry has a crossbeam at its top supported by a support frame. The system includes two adjustable cantilever beams, with one end of each beam detachably connected to the side formwork assembly. At least two pairs of side formwork lifters and one pair of wall support lifters are symmetrically installed on the two columns of each supporting gantry. The other end of each side formwork lifter is detachably connected to the side formwork assembly, and the other end of each wall support lifter abuts against the wall of the already cast box culvert structure. Multiple corner formwork lifters are symmetrically arranged at both ends of the top formwork assembly along its axis. One end of each corner formwork lifter is hinged to the edge of the top formwork assembly, and the other end is connected to the corner formwork panel pin. A bottom lifter is connected to the bottom of each column of the supporting gantry. The system is characterized by... The steps are as follows: S21: The assembled formwork system and support frame are placed on the already poured box culvert structure, and located in the first construction section of the box culvert structure to be poured. The formwork system includes a top formwork assembly, corner formwork panels and side formwork assemblies. The support frame includes a corner formwork lift, a support gantry, and a side formwork lift, a wall support lift, and a bottom lift connected to the support gantry. The corner formwork frame of the corner formwork panel has a connecting hole one and a connecting hole two at both ends. The top surface of the corner formwork frame near the connecting hole one has a slot. The corner formwork frame is connected to the top formwork panel of the top formwork assembly through the connecting hole one. One end of the steel panel of the top formwork panel can be snapped into the slot of the corner formwork panel. The other end of the steel panel of the corner formwork panel extends out of the corner formwork frame as an extension end. The extension end can be embedded in the slot at the end of the steel panel of the side formwork panel. S22: After the formwork system and support frame are in place, control the bottom lift to extend and support the bottom slab of the cast-in-place box culvert structure, and simultaneously lift the top formwork assembly to the design height; control the wall support lift to extend and abut against the wall of the cast-in-place box culvert structure; control the screw of the corner formwork lift to extend and push the corner formwork panel out and assemble it with the top formwork assembly; then control the side formwork lift to extend and push the side formwork assembly out and assemble it with the corner formwork panel; S23: Pour the walls and top slab of the current construction section of the box culvert structure to be poured. After the concrete reaches the design strength, control the wall support elevator to retract and separate from the walls of the already poured box culvert structure; control the side formwork elevator to retract and drive the side formwork components to retract and separate from the walls; then control the screw of the corner formwork elevator to retract and drive the corner formwork panel to retract and separate from the corner of the box culvert. S24: Move the formwork moving vehicle to the bottom of the support frame, so that the ends of the two telescopic frames of the formwork moving vehicle correspond to the positions of the casters of the support frame. Control the bottom lifting platform to retract, so that the support frame and the formwork system can be supported as a whole by the formwork moving vehicle. Control the formwork moving vehicle to move to the next construction section of the box culvert structure to be poured. S25: Repeat steps S22 to S24 until the concrete pouring construction of the box culvert structure to be poured is completed segment by segment.

2. The method of using the adjustable trolley mold frame system according to claim 1, characterized in that: The support frame also includes multiple adjustable horizontal beams. Each support gantry is a rectangular frame formed by connecting two longitudinally and transversely spaced columns and two horizontal beams. Two support gantry frames are vertically spaced apart, and multiple adjustable horizontal beams are horizontally arranged and bolted between the two support gantry frames. Each adjustable horizontal beam includes a first horizontal beam made of I-beams and a second horizontal beam made of two spaced and oppositely arranged channel steels. The web of the first horizontal beam is adapted to the gap between the two channel steels of the second horizontal beam, allowing the first horizontal beam to fit within the gap of the second horizontal beam and slide relative to it. The webs of the first and second horizontal beams are provided with multiple bolt holes spaced apart. The other ends of the first and second horizontal beams are vertically connected to side plates with bolt holes. The side plates of the first and second horizontal beams are bolted to the two supporting gantry frames on both sides respectively. At least two pairs of side formwork lifters and one pair of wall support lifters are symmetrically arranged on the two columns of each supporting gantry frame. The other end of the side formwork lifter is detachably connected to the side formwork assembly. The other end of the wall support lifter abuts against the wall of the cast-in-place box culvert structure. A bottom lifter is connected to the bottom of each column of the supporting gantry frame. In step S21, the extension length of the adjustable horizontal beam is determined according to the width of the box culvert structure to be cast. After adjusting the relative position of the first horizontal beam and the second horizontal beam to the required length for construction, the positioning bolts pass through the bolt holes of the first horizontal beam and the second horizontal beam and are locked and fixed.

3. The method of using the adjustable trolley mold frame system according to claim 2, characterized in that: Each of the aforementioned support gantry frames also includes two pairs of connecting rods (first), one pair of connecting rods (second), a pair of cantilever beam support frames, and a pair of adjustable cantilever beams. The two pairs of connecting rods (first) are vertically fixed to the connection points of the columns and beams, respectively. One end of the connecting rod (first) near the proposed culvert structure is bolted to the side formwork lift, and the other end is bolted to the adjustable horizontal beam. The pair of connecting rods (second) are vertically fixed to the outer sides of the bottom of the two columns, and the ends of the connecting rods (second) are bolted to the wall support lift. A horizontal connecting rod parallel to the beam is also provided between the pair of connecting rods (first) at the top. The pair of cantilever beam support frames are horizontally spaced and fixed to the beams and horizontal connecting rods, respectively. The pair of adjustable cantilever beams are erected and bolted to the pair of cantilever beam support frames. The adjustable cantilever beam includes a cantilever beam, a support bracket, and a lower support bracket. The support bracket includes a base, a sleeve connected to the base, and a first bearing connected to the bottom of the sleeve by a pin. One end of the cantilever beam passes through the sleeve and is supported by the first bearing. The lower support bracket includes a U-shaped support frame, an adjustable screw connected to the top of the support frame, a second bearing and a shaft pressure block located at the bottom of the adjustable screw and connected to the support frame by a pin. The other end of the cantilever beam passes through the support frame and is located at the bottom of the second bearing and the shaft pressure block. Both the support bracket and the lower support bracket are bolted to the cantilever beam support frame. The two ends of the cantilever beam are respectively provided with a first pin hole and a second pin hole. The first pin hole of the cantilever beam, which is close to the box culvert structure to be cast, is connected to the side formwork assembly by a pin. A stop block is installed in the second pin hole at the other end of the cantilever beam. In steps S22 and S23, during the process of closing and disassembling the side formwork assembly, the adjustable screw rotates downward to push the second bearing and the axial pressure block to move along the Y-axis, so that the cantilever beam can support the side formwork assembly to rotate around the first bearing of the support in the XY plane to the installation position required for construction, thereby achieving fine adjustment of the installation position of the side formwork assembly.

4. The method of using the adjustable trolley mold frame system according to claim 3, characterized in that: In step S24, each supporting gantry also includes a pair of caster connecting rods and a pair of casters. The bottom of the pair of connecting rods at the bottom is vertically connected to the pair of caster connecting rods, and the connecting plate fixed to the bottom end of each caster connecting rod is connected to the caster bolt.

5. The method of using the adjustable trolley mold frame system according to claim 1, characterized in that: The formwork moving vehicle includes a main frame, telescopic frames, an adjusting device, hollow crossbeams, main rods, support rods, rollers, a winch, and fixed pulleys. The main frame is a frame structure composed of two horizontal and two vertical rods arranged in a crisscross pattern. Two hollow crossbeams are arranged parallel and spaced apart within the main frame, and the hollow crossbeams perpendicularly penetrate the two vertical rods of the main frame. Two telescopic frames are symmetrically arranged on both sides of the two hollow crossbeams. Each telescopic frame includes two parallel and spaced sliding rods, a connecting rod connecting the two sliding rods, an ear plate located in the middle of the connecting rod, and a bracket connecting the sliding rod and the connecting rod. The bracket includes a support lift fixed to the end of the sliding rod and a support plate connected to the top of the lead screw of the support lift. The sliding rods of the two telescopic frames are respectively embedded at both ends of the hollow crossbeams; the main rods and The support rods are arranged parallel to the hollow crossbeams. The main rod is located in the middle of the main frame, and the support rods are located between the hollow crossbeams and the main rods. The adjustment device includes an adjustment lift and two support guide rods symmetrically arranged on both sides. The adjustment lift is vertically fixed to the middle of the main rod. The two support guide rods are symmetrically arranged along the axis of the main frame. One end of each support guide rod is connected to the top of the adjustment lift, and the other end of each support guide rod is connected to the ear plate pins of the telescopic frames on both sides. The winch is fixed to the support rods, and the fixed pulley is fixed to the hollow crossbeam. The adjustment lift, winch, and fixed pulley are all arranged along the axis of the main frame. One end of the wire rope is wound around the winch, and the other end passes over the fixed pulley and is connected to the anchor located on the axis of the cast-in-place box culvert structure. Multiple rollers are installed at the bottom of the main frame. Step S24 further includes adjusting the height of the support lift of the bracket so that the support plates of multiple brackets are on the same horizontal plane, running the mold frame moving trolley to the bottom of the support frame, controlling the screw of the adjusting lift to extend and retract along the Y-axis, driving the two telescopic frames to move synchronously in opposite directions along the X-axis through the support guide rod, thereby adjusting the distance between the brackets on the two telescopic frames along the X-axis so that the brackets on the two telescopic frames can correspond to the position of the casters of the support frame, controlling the bottom lift of the support frame to retract so that the support frame can be completely erected on the brackets of the two telescopic frames; The winch winds up the wire rope, shortening the length of the wire rope between the formwork moving vehicle and the anchor. The formwork moving vehicle carries the support frame and the formwork system and moves along the Z-axis to the next construction section.

6. The method of using the adjustable trolley mold frame system according to claim 5, characterized in that: The mold frame moving vehicle also includes two telescopic guide rods. The two telescopic guide rods are respectively vertically connected to both sides of the two longitudinal rods of the main frame. The telescopic guide rods include two hollow cross rods fixed to the ends of the longitudinal rods and two support rods respectively embedded in the two hollow cross rods. The two support rods are installed in opposite directions. The side walls of the hollow cross rods and the support rods are provided with multiple bolt holes at equal intervals. The ends of the two support rods are connected to guide wheels. Step S24 further includes, when the formwork moving vehicle is unloaded, keeping both telescopic guide rods in a retracted state, with the formwork system and support frame mounted on the brackets of the two telescopic frames of the formwork moving vehicle, the two support rods of the two telescopic guide rods extending out, and the guide wheels at the ends of the two support rods abutting against the wall of the already poured box culvert structure, and the positioning bolts passing through the bolt holes on the hollow crossbar and support rods and locking them in place, so that the formwork moving vehicle can maintain an equal distance from the wall during sliding.

7. The method of using the adjustable trolley mold frame system according to claim 3, characterized in that: In step S21, the top mold assembly includes a top mold panel, multiple horizontal back ribs spaced apart at its bottom, and multiple quick-connectors for the back ribs. Each quick-connector consists of a U-shaped bending plate, a threaded rod penetrating the bending plate, and multiple nuts. One end of the threaded rod is rigidly connected to a nut, and the other end passes through the connection hole between the bending plate and the top mold panel and is locked in place by the nut. The horizontal back ribs are snapped into hooks on the bending plate, allowing them to be vertically snapped into the bottom of the top mold panel. The side mold assembly includes a side mold panel, horizontal back ribs, a first vertical back rib, a second vertical back rib, and quick-connectors for the back ribs. Multiple horizontal back ribs are connected to one side of the side mold panel via quick-connectors for the back ribs. Two first vertical back ribs... Vertical back ribs are set vertically at intervals and correspond to the positions of the two columns supporting the gantry. The first vertical back rib is bolted to the second horizontal back rib. The two channel steels of the first vertical back rib have corresponding elongated holes. The end of the screw of the side formwork lifting machine is embedded in the gap between the two channel steels. The pin passes through the elongated hole of the first vertical back rib and the screw of the side formwork lifting machine and is tightened. Two second vertical back ribs are set vertically at intervals and correspond to the positions of the two adjustable cantilever beams. The second vertical back ribs are bolted to the second horizontal back rib. The two channel steels of the second vertical back rib have corresponding elongated holes. The end of the adjustable cantilever beam is embedded in the gap between the two channel steels. The pin passes through the elongated hole of the second vertical back rib and the end of the adjustable cantilever beam and is tightened.

8. The method of using the adjustable trolley mold frame system according to claim 6, characterized in that: In step S21, multiple corner mold lifting machines are symmetrically arranged at both ends of the top mold assembly along its axis. One end of each corner mold lifting machine is hinged to the edge of the top mold assembly, and the other end is connected to the corner mold panel pin. Each corner mold lifting machine includes a lead screw, a connecting rod connected to one end of the lead screw, a screw drive device threaded to the other end of the lead screw, and an upper support fixed to the end of the screw drive device. The upper support is connected to the horizontal back rib of the top mold assembly pin. The connecting rod at the end of the lead screw is connected to the pin through the connecting hole two of the corner mold skeleton. The screw drive device is connected to the control system signal. By controlling the extension and retraction of the lead screw of the corner mold lifting machine, the corner mold panel rotates around the connecting hole one along the end of the top mold assembly, pushing the corner mold panel out and assembling it with the top mold assembly.

9. The method of using the adjustable trolley mold frame system according to claim 1, characterized in that: Each support gantry also includes an adjusting screw vertically connected to the top of the column, and the adjusting screw is bolted to the top formwork assembly; Each support gantry column is also provided with a gantry bottom sleeve at the bottom. The gantry bottom sleeve is made of a vertically set cylinder and a base plate. The base plate is bolted to the bottom lift. The cylinder can be fitted inside the column, and multiple through holes are vertically spaced between the side wall of the cylinder and the bottom of the column. The gantry bottom sleeve is fitted to the bottom of the support gantry and connected by a pin through the through hole, so that the bottom lift can be detachably connected to the bottom of the support frame. In step S22, the relative position between the cylinder of the bottom sleeve of the gantry and the column is adjusted to the required construction height, and the two are connected and fixed by a pin through the through hole. The bottom lift is controlled to extend and support the bottom plate of the cast-in-place box culvert structure. The extension and retraction length of the adjusting screw is adjusted to lift the top formwork assembly to the design height.

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