Pouring equipment for large-section cantilever closure section in bridge construction

Abstract

The present application relates to a kind of for bridge construction large section cantilever closure section pouring equipment.The pouring equipment is installed between two groups of bridge cantilever section, and each group of bridge cantilever section includes pier part and bridge part, and the pouring equipment includes bridging part, hanging basket part and suspension correction assembly;The bridging part includes two groups of portal frame, and two groups of portal frame are respectively erected on the bridge part of closure section two sides, and the rear end of two groups of portal frame is equipped with moving part, and moving part includes middle connecting plate and two groups of L-shaped guide rail, and two groups of L-shaped guide rail are slidably installed with straight connecting plate, and the front end of straight connecting plate is equipped with hanging basket part for pouring, and multiple cross beams are inserted between two groups of portal frame, and multiple cross beams are equipped with suspension correction assembly for correcting the hanging basket part of pouring, and the bottom of two pouring hanging basket parts is equipped with monitoring assembly.The large section cantilever closure section pouring equipment provided by the present application has the advantages of accurate pouring, and the pouring forming quality is high.

Description

Technical Field

[0001] This invention relates to the field of bridge closure segment construction technology, and in particular to a casting device for large-segment cantilever closure segments in bridge construction. Background Technology

[0002] The casting of large-segment cantilever closure sections is a core control point when large continuous beam bridges, continuous rigid frame bridges, and cable-stayed bridges adopt the cantilever construction method. Its quality is directly related to the bridge's alignment, internal forces, and long-term safety.

[0003] Because the length of the large segment closure section is relatively large, the conventional closure section length is generally 2-3 meters, while the "large segment" may reach 4-8 meters or longer. This brings challenges to the closure section pouring construction. Traditional hanging baskets have difficulties in docking when pouring such large segment closure sections, which can easily lead to pouring misalignment during the closure process, thus affecting the construction quality of the bridge closure section.

[0004] Therefore, it is necessary to provide a new large-segment cantilever closure section casting equipment to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a casting device for large-segment cantilever closure sections in bridge construction. This device can improve the alignment accuracy of the closure section formwork, facilitate the casting construction of the closure section, and monitor the alignment of the formwork during casting, thereby further controlling the construction accuracy of the casting.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a casting device for large-segment cantilever closure sections in bridge construction. The casting device is installed between two sets of bridge cantilever segments and is used to cast the closure section between the two bridge cantilever segments. Each set of bridge cantilever segments includes a pier section and a bridge section erected on the pier section. The casting device includes a bridge erection section, a moving section, a hanging basket section, and a cantilever alignment component.

[0007] The bridging section includes two sets of gantry frames and multiple span beams connecting the two sets of gantry frames. The two sets of gantry frames are respectively set at the cantilever ends of the bridge section of the two sets of bridge cantilever segments. A movable part is installed at the rear of each set of gantry frames, and a hanging basket for joint casting is installed at the front end of each movable part.

[0008] The moving part includes a central connecting plate and two sets of C-shaped guide rails. The two sets of C-shaped guide rails are respectively installed on the two side walls of the corresponding side bridge part by anchor bolts and are fixedly connected by the central connecting plate. The hanging basket part is located at the cantilever end of the corresponding side bridge part. Straight connecting plates are connected to both sides of the hanging basket part. Each side hanging basket part is slidably connected to the two sets of C-shaped guide rails of the corresponding side moving part by two straight connecting plates. The two sets of hanging basket parts move along the two moving parts to the alignment state under the drive of external force. In the alignment state, the two sets of hanging basket parts are placed parallel to each other below multiple span beams and are connected to multiple span beams through suspension components. Monitoring components for monitoring the deformation of the closure and casting are installed at the bottom alignment parts of the two hanging basket parts.

[0009] The suspension assembly includes an upper top frame fixedly installed in the middle of multiple span beams. Hydraulic cylinders are symmetrically installed on both sides of the upper top frame. A horizontal connecting plate is fixedly installed on the telescopic end of each hydraulic cylinder. A tie rod is installed on each horizontal connecting plate. The hanging basket part has a concave structure. L-shaped grooves are opened at the mating ends on both sides of its opening. Pull holes matching the tie rods are provided on both sides of the opening of the hanging basket part. A correction component that plugs into the L-shaped groove is installed on each tie rod.

[0010] The preferred technical solution of the present invention is as follows: the opening of the hanging basket is symmetrically provided with L-shaped flanges, the L-shaped grooves are opened on each side of the L-shaped flanges near the mating ends of the hanging baskets, and multiple pull holes are provided on each side, equidistantly distributed at the bottom of the L-shaped flanges; the upper top frame is provided with two sets of tie rods on each side, each set of tie rods including multiple J-shaped tie rods that match the pull holes, and the correction component is installed on two adjacent J-shaped tie rods in the middle of the two sets of tie rods on the same side; the correction component includes a sliding block, the sliding block is slidably installed on two adjacent J-shaped tie rods, and the front end of the sliding block is provided with a fixed protrusion and a movable protrusion that match and engage with the L-shaped grooves, the fixed protrusion is fixedly installed on the sliding block, and the movable protrusion is installed on the sliding block through an adjustment component; the adjustment component includes a guide rod, an adjustment plate and a screw, the screw is rotatably installed on the side of the sliding block away from the protrusion, the adjustment plate is threaded onto the screw, the guide rod moves through the sliding block, one end is connected to the movable protrusion and the other end is connected to the adjustment plate.

[0011] A further technical solution of the present invention: The monitoring component includes a rectangular box, which is fixedly installed at the bottom front end of the hanging basket. Multiple piezoelectric sensors are evenly installed at the bottom of the rectangular box. A groove is formed at the top of the rectangular box directly above the multiple piezoelectric sensors. A disc is fitted into the groove. A guide rod is fixedly installed at the bottom of the disc. A monitoring rod is slidably installed on the guide rod. One end of the monitoring rod, away from the guide rod, extends towards the other side of the hanging basket and is threaded with an adjusting rod. A connecting spring is sleeved on the guide rod. One end of the connecting spring is fixedly connected to the monitoring rod, and the other end is fixedly connected to the piezoelectric sensor. The multiple piezoelectric sensors are electrically connected to a controller, which is fixedly installed on the outer wall of the rectangular box and communicatively connected to a host computer.

[0012] A preferred technical solution of the present invention is as follows: a movable seat is slidably installed on each set of C-shaped guide rails, and a diagonal tie rod connected to the gantry frame is installed on the movable seat. One end of each diagonal tie rod is rotatably connected to the side of the corresponding side of the gantry frame, and the other end is rotatably installed on the movable seat on the corresponding side. The inner cavity of the C-shaped guide rail is symmetrically provided with grooves that slide and engage with the movable seat. Several slots are evenly provided on the outer side of the C-shaped guide rail. A limiting chuck that engages with the slots is slidably installed on the movable seat. A locking screw is threaded on one side of the movable seat.

[0013] A preferred technical solution of the present invention is as follows: the two sides of the hanging basket are provided with inclined plates for strengthening the connection between them and the gantry frame. One end of the inclined plate is fixedly connected to the gantry frame, and the other end of the inclined plate is hinged to the side wall of the hanging basket. The hanging basket is provided with a slot for insertion and cooperation with the straight connecting plate.

[0014] The preferred technical solution of the present invention is as follows: the cross beam includes a middle main beam, the middle main beam has a threaded through hole in the middle for fixed connection with the upper top frame, the two ends of the middle main beam are equipped with telescopic connecting beams, the end of the connecting beam opposite to the middle main beam is provided with a plug-in column, and the crossbeam of the gantry frame is provided with a plug hole for plugging into the plug-in column.

[0015] The preferred technical solution of the present invention is that the monitoring components at the bottom of the two mating hanging baskets are staggered.

[0016] A preferred embodiment of the present invention is that the moving part further includes a skid-mounted vehicle for moving the gantry.

[0017] The preferred technical solution of the present invention is as follows: the guide rod is provided in two sets, the two sets of guide rods are movably inserted into the sliding block, the front end of the two sets of guide rods are connected to the movable protrusion, and the other end is fixedly connected to the adjustment plate. The two sets of guide rods are arranged parallel to each other on the upper and lower sides of the screw. A handwheel is fixedly installed on the end of the screw away from the movable protrusion. A backstop plate is fixedly installed on the top of the sliding block.

[0018] The preferred technical solution of the present invention is as follows: each set of tie rods includes a vertical rod, the upper end of which is fixedly connected to a horizontal connecting plate, and a horizontal tie plate is fixedly installed at the bottom end of the vertical rod. The vertical rod is connected to the middle of the horizontal tie plate, and multiple J-shaped tie rods are evenly installed at the bottom end of the horizontal tie plate.

[0019] Compared with related technologies, the present invention has the following beneficial effects:

[0020] (1) The large segment cantilever closure section casting equipment provided by the present invention sets a cross beam on the gantry frame and a suspension correction component on the cross beam. The suspension correction component is used to correct and align the closure hanging basket, which improves the alignment accuracy of the closure section hanging basket and facilitates the casting construction of the closure section. This avoids the problem of casting misalignment caused by inaccurate alignment of the hanging basket and improves the casting construction quality of the beam closure section.

[0021] (2) The present invention provides a monitoring component at the bottom of the two mating hanging baskets. The monitoring component uses a rectangular box, a piezoelectric sensor, a disc, a guide rod, a monitoring rod, an adjusting rod, a connecting spring and a controller to monitor the misalignment of the two mating hanging baskets during the pouring process. When a large misalignment occurs in the mating hanging baskets, an early warning is issued to facilitate timely adjustment and correction, and further control the construction accuracy of the pouring process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0024] Figure 3 A schematic diagram of a suspension assembly installed on a span-connecting beam provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the hanging basket provided by the present invention;

[0026] Figure 5 Another structural schematic diagram of the hanging basket provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the calibration component provided by the present invention;

[0028] Figure 7 Another perspective structural schematic diagram of the correction component provided by the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the monitoring component provided by the present invention;

[0030] Figure 9 A schematic diagram of a guide rod with a monitoring rod mounted on it, provided by the present invention;

[0031] Figure 10 for Figure 2 A magnified view of part A shown.

[0032] Figure labels: 100, Pier; 110, Bridge section; 200, Bridge erection section; 210, Gantry frame; 211, Cable tie plate; 220, Connecting beam; 221, Intermediate main beam; 222, Connecting beam; 223, Inserted column; 300, Moving section; 310, Middle connecting plate; 320, U-shaped guide rail; 321, Slot; 330, Moving seat; 331, Limiting chuck; 332, Anti-reverse screw; 340, Cable tie rod; 350, Straight connecting plate; 360, Skid-mounted vehicle; 400, Hanging basket section; 401, L-shaped groove; 402, Pull hole; 500, Suspension assembly; 510, Upper... Top frame; 520, Hydraulic cylinder; 530, Horizontal connecting plate; 540, Fastener; 541, Vertical rod; 542, Horizontal tie plate; 543, J-type tie rod; 550, Correction component; 551, Sliding block; 552, Fixed protrusion; 553, Guide rod; 554, Movable protrusion; 555, Adjusting plate; 556, Screw; 557, Handwheel; 558, Anti-reverse plate; 600, Monitoring component; 610, Rectangular box; 620, Piezoelectric sensor; 630, Disc; 640, Guide rod; 650, Monitoring rod; 660, Adjusting rod; 670, Connecting spring; 680, Controller. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0035] Example 1 provides a casting device for large-segment cantilever closure sections in bridge construction, such as... Figures 1 to 10As shown, the casting equipment is installed between two sets of bridge cantilever sections for casting a 4-8m long closure section between the two cantilever sections. Each set of bridge cantilever sections includes a pier section 100 and a bridge section 110 erected on the pier section 100. The casting equipment includes a bridge erection section 200, a moving section 300, a formwork section 400, and a suspension assembly 500. The bridge erection section 200 includes two sets of gantry frames 210 and a connection between the two sets of gantry frames 210. Multiple span connecting beams 220 are arranged between the gantry frames 210. The two sets of gantry frames 210 are respectively set at the cantilever ends of the bridge section 110 of the two sets of bridge cantilever sections. The multiple span connecting beams 220 are horizontally arranged between the two sets of gantry frames 210. The two ends of each span connecting beam 220 are respectively inserted into the two sets of gantry frames 210. A movable part 300 is installed at the rear of each set of gantry frames 210. A hanging basket part 400 for joint casting is installed at the front end of each movable part 300.

[0036] In Example 1, as Figure 1 and Figure 2 As shown, the moving part 300 includes a central connecting plate 310 and two sets of C-shaped guide rails 320. The two sets of C-shaped guide rails 320 are respectively installed on the two side walls of the corresponding side bridge part 110 by anchor bolts. One end of the two sets of C-shaped guide rails 320 is close to the cantilever end of the bridge part 110, and the other end of the two sets of C-shaped guide rails 320 away from the cantilever end of the bridge part 110 is fixedly connected by the central connecting plate 310, and the central connecting plate 310 is fixed on the bridge part 110. The hanging basket part 400 is located at the cantilever end of the corresponding side bridge part 110. Straight connecting plates 350 are respectively connected to its two sides. Each side hanging basket part 400 is slidably connected to the two sets of C-shaped guide rails 320 of the corresponding side moving part 300 by two straight connecting plates 350. The shape of each straight connecting plate 350 matches the sliding groove of the C-shaped guide rail 320 and can slide within the corresponding C-shaped guide rail 320. The two sets of hanging baskets 400 can move along the two sets of moving parts 300 to the mating state under the drive of the external drive mechanism. In the mating state, the two sets of hanging baskets 400 are placed parallel to each other below the multiple cross beams 220 and are connected to the multiple cross beams 220 through the suspension assembly 500.

[0037] The large-segment cantilever closure section casting equipment provided in Example 1, such as Figure 4 and Figure 5 As shown, the hanging basket part 400 has a concave structure, with L-shaped flanges symmetrically arranged on both sides of its opening. Each L-shaped flange has an L-shaped groove 401 near the mating end of the hanging basket part 400. Multiple pull holes 402 are provided at the bottom of the two L-shaped flanges. Monitoring components 600 for monitoring the deformation of the closure casting are respectively installed at the mating bottom of the two hanging basket parts 400. Figure 3As shown, the suspension assembly 500 includes an upper top frame 510, which is fixedly installed in the middle of multiple span beams 220. Hydraulic cylinders 520 are symmetrically installed on both sides of the upper top frame 510. A horizontal connecting plate 530 is fixedly installed at the telescopic end of each hydraulic cylinder 520. Two sets of fasteners 540 matching the pull holes 402 are installed on each horizontal connecting plate 530. The fasteners 540 on both sides of the upper top frame 510 are symmetrically arranged. A correction component 550 that is inserted into the L-shaped groove 401 is installed on each fastener 540. Each set of fasteners 540 includes a vertical rod 541, the upper end of which is fixedly connected to a horizontal connecting plate 530. A horizontal tie plate 542 is fixedly installed at the bottom end of the vertical rod 541. The vertical rod 541 is connected to the middle of the horizontal tie plate 542. A plurality of J-shaped tie rods 543 are evenly installed at the bottom end of the horizontal tie plate 542. The diameter of the J-shaped tie rods 543 matches the pull hole 402 and is inserted into the pull hole 402. The correction piece 550 is installed on two adjacent J-shaped tie rods 543 in the middle of the two sets of fasteners 540.

[0038] In Example 1, as Figure 6 and Figure 7 As shown, the calibration component 550 includes a sliding block 551, which is slidably mounted on two adjacent J-shaped pull rods 543. A fixing protrusion 552, which matches and engages with an L-shaped groove 401, is fixedly mounted on one side of the front end of the sliding block 551. Two sets of guide rods 553 are inserted into the other side of the sliding block 551. The two sets of guide rods 553 are movably inserted into the sliding block 551, and a movable protrusion 554, which matches and engages with an L-shaped groove 401, is fixedly mounted at the front end of each set of guide rods 553. The other ends of the two sets of guide rods 553 are jointly fixed. An adjusting plate 555 is installed, with a threaded hole in the middle of the adjusting plate 555. Two sets of guide rods 553 are located on the upper and lower sides of the threaded hole, respectively. A screw 556 is rotatably mounted on the rear end of the sliding block 551. The adjusting plate 555 is threadedly connected to the screw 556 through the threaded hole in the middle. A handwheel 557 is fixedly mounted on the end of the screw 556 away from the movable protrusion 554. Rotating the screw 556 by the handwheel 557 causes the adjusting plate 555 to move, thereby driving the movable protrusion 554 to move. To install the screw 556, an L-shaped support plate is fixedly installed on the sliding block 551, and the screw 556 is rotatably mounted between the support plate and the sliding block 551.

[0039] In the first embodiment, during the pouring of non-closure sections, external auxiliary equipment drives the gantry 210 to move forward step by step along the bridge section 110, while simultaneously driving the straight connecting plate 350 to move along the U-shaped guide rail 320, causing the hanging basket section 400 to move forward synchronously, thus enabling pouring section by section. During the pouring process, the U-shaped guide rail 320 can be extended according to the pouring length, or a fixed length can be set according to the pouring length, its length allowing the hanging basket section 400 to move to the correct position. At the closure section, when the pouring is moved to the closure section, the span beam 220 is inserted between the two sets of gantry frames 210, and then the two hanging basket parts 400 are combined into one. At this time, the hydraulic cylinder 520 is in a retracted state, and the four sets of fasteners 540 are respectively located below the L-shaped flanges of the two hanging basket parts 400. Then, by driving the sliding block 551 downward, it slides along the J-shaped tie rod 543 to the position where the hanging basket part 400 has an L-shaped groove 401. The fixing protrusion 552 is inserted into one side of the hanging basket part 400. In the L-shaped groove 401, the movable protrusion 554 is inserted into the L-shaped groove 401 of the hanging basket part 400 on the other side. Then, by turning the handwheel 557, the screw 556 is driven to rotate. When the screw 556 rotates, it drives the guide rod 553 to move on the sliding block 551 through the adjusting plate 555, thereby driving the movable protrusion 554 to move in the L-shaped groove 401, so as to push or pull the hanging basket part 400 inward, so as to make it precisely aligned with the hanging basket part 400 in which the fixed protrusion 552 is inserted. To prevent misalignment, the hydraulic cylinder 520 drives the horizontal connecting plate 530 to move upward. As the horizontal connecting plate 530 moves upward, it drives several J-shaped tie rods 543 to move upward synchronously through the vertical rod 541 and the horizontal tie plate 542 until they are inserted into the pull hole 402, thus completing the suspension of the hanging basket part 400 and improving the tensile stability of the hanging basket part 400. After the hanging basket part 400 is aligned and secured, the monitoring component 600 is used to detect the vertical misalignment of the two hanging basket parts 400.

[0040] It should also be noted that the operation of hydraulic cylinder 520 is controlled by an external hydraulic oil pump and hydraulic valve, and the specific control principle is based on existing technology.

[0041] In this embodiment, a stop plate 558 is fixedly installed at the top of the sliding block 551. When the sliding block 551 moves downward along the J-shaped pull rod 543, the stop plate 558 contacts the top of the hanging basket part 400 to stop it from moving downward, thus preventing the sliding block 551 from sliding below the mating hanging basket part 400 and affecting the rapid adjustment.

[0042] Example 2 provides a casting device for large-segment cantilever closure sections in bridge construction, such as... Figures 1 to 10 As shown, its main structure is the same as that of Embodiment 1. The difference is that the monitoring component 600 is further defined in Embodiment 2, such as... Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the monitoring component 600 includes a rectangular box 610, which is fixedly installed at the bottom front end of the hanging basket 400. Multiple piezoelectric sensors 620 are evenly installed on the bottom of the rectangular box 610. Multiple recesses are formed at the top of the rectangular box 610, located directly above and corresponding to each piezoelectric sensor 620. A disc 630 is fitted inside each recess, and a guide rod 640 is fixedly installed at the bottom of the disc 630. A sliding rod 640 is mounted on the guide rod 640. A monitoring rod 650 is provided, with one end of the monitoring rod 650 away from the guide rod 640 extending to the hanging basket part 400 on the other side, and an adjusting rod 660 is threadedly installed thereon. A connecting spring 670 is sleeved on the guide rod 640, with one end of the connecting spring 670 fixedly connected to the monitoring rod 650 and the other end of the connecting spring 670 fixedly connected to the piezoelectric sensor 620. Several piezoelectric sensors 620 are electrically connected to a controller 680, which is fixedly installed on the outer wall of the rectangular box 610 and is communicatively connected to a host computer.

[0043] In Example 3, when the monitoring component 600 is in use, after the two opposing hanging basket sections 400 are leveled using the J-shaped pull rod 543, the adjusting rods 660 on the multiple monitoring rods 650 of one side of the hanging basket section 400 are adjusted so that the top of the adjusting rod 660 is aligned with the bottom of the other side of the hanging basket section 400. After adjustment, the piezoelectric sensor 620 is zeroed using the controller 680. After calibration, during pouring, when one side of the hanging basket section 400 is misaligned downwards, the adjusting rod 660 is pressed to drive the monitoring rod 650 to slide along the guide rod 640. During sliding, the piezoelectric sensor 620 is squeezed by the connecting spring 670. Then, the piezoelectric sensor 620 transmits data to the controller 680. The controller 680 is connected to an alarm device, which can provide alarm prompts. The upper computer monitors the vertical misalignment of the opposing hanging basket sections 400. When the vertical misalignment is severe, timely adjustment and correction are made.

[0044] In this embodiment, the monitoring components 600 at the bottom of the two mating hanging baskets 400 are staggered. This staggered arrangement avoids the two monitoring rods 650 from monitoring the same position and causing interference.

[0045] Example 3 provides a casting device for large-segment cantilever closure sections in bridge construction, such as... Figures 1 to 10As shown, its main structure is the same as that of Embodiment 2, except that: a movable seat 330 is slidably installed on each set of C-shaped guide rails 320, and a diagonal tie rod 340 connected to the gantry frame 210 is installed on the movable seat 330. One end of each diagonal tie rod 340 is rotatably connected to the side of the corresponding side of the gantry frame 210, and the other end is rotatably installed on the corresponding side movable seat 330. The inner cavity of the C-shaped guide rail 320 is symmetrically provided with grooves that slide with the movable seat 330, and the outer side of the C-shaped guide rail 320 is evenly provided with multiple slots 321. A limiting chuck 331 that engages with the slots 321 is slidably installed on the movable seat 330, and a locking screw 332 is threaded on one side of the movable seat 330.

[0046] It should be noted that: after the movable seat 330 moves along the U-shaped guide rail 320, when it needs to be fixed, the limiting chuck 331 is moved along the movable seat 330 until it is inserted into the slot 321 of the U-shaped guide rail 320. Then, the anti-reverse screw 332 is screwed into the movable seat 330 to limit the limiting chuck 331. When it is necessary to drive the movable seat 330 to slide along the U-shaped guide rail 320, the anti-reverse screw 332 is unscrewed to remove the limiting chuck 331 from the slot 321.

[0047] In Example 3, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The hanging basket part 400 is provided with inclined bracing plates 211 for strengthening the connection between its two sides and the gantry frame 210. One end of the inclined bracing plate 211 is fixedly connected to the gantry frame 210, and the other end of the inclined bracing plate 211 is hinged to the side wall of the hanging basket part 400. The hanging basket part 400 is provided with a slot for insertion and cooperation with the straight connecting plate 350.

[0048] It should be noted that when the formwork 400 needs to be moved after it has been cast (for non-closure section casting construction), when the formwork 400 is bonded to the cast bridge section 110, the straight connecting plate 350 is pulled out of the formwork 400, and then the formwork 400 is tapped downwards so that the formwork 400 can rotate around the inclined plate 211 and separate from the cast bridge section 110. After separation, the formwork 400 is kept horizontal, and then the straight connecting plate 350 is reinserted to drive the movement.

[0049] It should also be noted that the hanging basket section 400 here is a direct casting formwork, and the shape of its inner cavity is the same as the cross-section of the bridge section 110. This allows the steel cage to be directly inserted into it for casting, and after casting, the formwork can be demolded.

[0050] In Embodiment 3 of the present invention, please refer to Figure 1 and Figure 2The moving part 300 also includes a skid-mounted vehicle 360 ​​for moving the gantry 210; when the gantry 210 needs to be moved, the skid-mounted vehicle 360 ​​is pulled by an external power component (crane, winch or traction equipment) to first lift the gantry 210 off the bridge part 110 and then push it forward.

[0051] In Embodiment 3 of the present invention, please refer to Figure 1 , Figure 2 and Figure 3 The connecting beam 220 includes a central main beam 221. The central main beam 221 has a threaded through hole in its middle for fixed connection with the upper top frame 510. Telescopic connecting beams 222 are installed at both ends of the central main beam 221. A plug-in post 223 is provided at the end of the connecting beam 222 facing away from the central main beam 221. The crossbeam of the gantry frame 210 has insertion holes for insertion into the plug-in posts 223. Thus, when connecting two sets of gantry frames 210, the connecting beam 220 is pulled along the connecting beams 222 on both sides of the central main beam 221 to match the length of the two sets of gantry frames 210. Then, the plug-in posts 223 are quickly inserted into the insertion holes on the gantry frames 210, completing the rapid installation.

[0052] The working principle of the large-segment cantilever closure section casting equipment provided in Example 3 is as follows:

[0053] During use, for the non-closure section pouring construction, the skid-mounted vehicle 360 ​​is pulled by an external power component (crane, winch, or traction equipment) to first lift the gantry frame 210 from the bridge section 110, and then push it forward to move it gradually forward along the bridge section 110. At the same time, the external power component drives the straight connecting plate 350 to move along the U-shaped guide rail 320, which in turn drives the hanging basket 400 to move forward synchronously, so that the pouring can be carried out section by section. When the pouring movement reaches the closure section, the span beam 220 is inserted into the two sets of gantry frames 210, and then the two hanging baskets 400 are combined into one, and then driven downward. The sliding block 551 slides along the J-shaped pull rod 543 into the L-shaped groove 401 of the hanging basket part 400. The fixed protrusion 552 is fixedly inserted into the L-shaped groove 401 of one side of the hanging basket part 400, and the movable protrusion 554 is inserted into the L-shaped groove 401 of the other side of the hanging basket part 400. Then, by turning the handwheel 557, the screw 556 is driven to rotate. When the screw 556 rotates, it drives the guide rod 553 to move on the sliding block 551 via the adjusting plate 555, thereby causing the movable protrusion 554 to move in the L-shaped groove 401, thus pushing or pulling the hanging basket part 400 inwards or outwards, so that it is aligned with the fixed protrusion 552. 1. The inserted hanging basket section 400 is precisely aligned to avoid left-right misalignment. After alignment, the hydraulic cylinder 520 drives the horizontal connecting plate 530 to move upward. When the horizontal connecting plate 530 moves upward, it drives several J-shaped tie rods 543 to move upward synchronously through the vertical rod 541 and the horizontal tie plate 542 until they move into the insertion hole 402, thus completing the suspension of the hanging basket section 400 and improving the tensile stability of the hanging basket section 400. After alignment and tensioning, the two aligned hanging basket sections 400 are leveled using the J-shaped tie rods 543. Then, the adjusting rods 660 on several monitoring rods 650 of one side of the hanging basket section 400 are adjusted. This ensures that the top of the adjusting rod 660 is aligned with the bottom of the hanging basket 400 on the other side. After adjustment, the controller 680 is used to calibrate the piezoelectric sensor 620. After calibration, during pouring, when one side of the hanging basket 400 is misaligned downwards, the adjusting rod 660 is pressed to drive the monitoring rod 650 to slide along the guide rod 640. During sliding, the connecting spring 670 squeezes the piezoelectric sensor 620, and then the piezoelectric sensor 620 transmits data to the controller 680. The host computer then monitors the vertical misalignment of the aligned hanging baskets 400. When the vertical misalignment is severe, timely adjustment and correction are made.

[0054] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0055] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A casting device for large-segment cantilever closure sections in bridge construction, the casting device being installed between two sets of bridge cantilever segments for casting the closure section between the two bridge cantilever segments, each set of bridge cantilever segments including a pier section (100) and a bridge section (110) erected on the pier section (100), characterized in that: The pouring equipment includes a bridging section (200), a moving section (300), a hanging basket section (400), and a suspension assembly (500). The bridging section (200) includes two sets of gantry frames (210) and multiple span beams (220) connecting the two sets of gantry frames (210). The two sets of gantry frames (210) are respectively set at the cantilever ends of the bridge section (110) of the two sets of bridge cantilever sections. A movable part (300) is installed at the rear of each set of gantry frames (210). A hanging basket part (400) for joint casting is installed at the front end of each movable part (300). The movable part (300) includes a central connecting plate (310) and two sets of U-shaped guide rails (320). The two sets of U-shaped guide rails (320) are respectively installed on the two side walls of the corresponding side bridge part (110) by anchor bolts and are fixedly connected by the central connecting plate (310). The hanging basket part (400) is located at the cantilever end of the corresponding side bridge part (110), and its two sides are respectively connected by straight connecting plates (350). Each side hanging basket part (400) is connected to the corresponding side bridge part (110) by two straight connecting plates (350). The two sets of C-shaped guide rails (320) of the moving part (300) are slidably connected; the two sets of hanging baskets (400) move along the two sets of moving parts (300) to the mating state under the drive of external force. In the mating state, the two sets of hanging baskets (400) are placed parallel to each other below the multiple span beams (220) and are connected to the multiple span beams (220) through the suspension assembly (500). Monitoring components (600) for monitoring the deformation of the closure casting are installed at the mating parts at the bottom of the two hanging baskets (400). The suspension assembly (500) includes an upper top frame (510) fixedly installed in the middle of multiple cross beams (220). Hydraulic cylinders (520) are symmetrically installed on both sides of the upper top frame (510). A horizontal connecting plate (530) is fixedly installed at the telescopic end of each hydraulic cylinder (520). A tie rod (540) is installed on each horizontal connecting plate (530). The hanging basket part (400) has a concave structure. L-shaped grooves (401) are respectively opened at the mating ends on both sides of its opening. Pull holes (402) matching the tie rods (540) are respectively provided on both sides of the opening of the hanging basket part (400). A correction component (550) that is inserted into the L-shaped groove (401) is installed on each tie rod (540). The opening of the hanging basket part (400) is symmetrically provided with L-shaped flanges. The L-shaped grooves (401) are opened on each side of the L-shaped flanges near the mating ends of the hanging basket part (400). Multiple pull holes (402) are provided on each side, equidistantly distributed at the bottom of the L-shaped flanges. The upper top frame (510) is provided with two sets of fasteners (540) on each side. Each set of fasteners (540) includes multiple J-shaped pull rods (543) that match the pull holes (402). The corrector (550) is installed on two adjacent J-shaped pull rods (543) in the middle of the two sets of fasteners (540) on the same side. The corrector (550) includes a sliding block (551). The sliding block (551) is slidably installed on two adjacent J-shaped pull rods (543). The front end of the sliding block (551) is provided with a fixed protrusion (552) and a movable protrusion (554) that are matched and inserted into the L-shaped groove (401). The fixed protrusion (552) is fixedly installed on the sliding block (551), and the movable protrusion (554) is installed on the sliding block (551) through an adjustment assembly. The adjustment assembly includes a guide rod (553), an adjustment plate (555), and a screw (556). The screw (556) is rotatably installed on the side of the sliding block (551) away from the protrusion. The adjustment plate (555) is threaded onto the screw (556). The guide rod (553) moves through the sliding block (551), with one end connected to the movable protrusion (554) and the other end connected to the adjustment plate (555).

2. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The monitoring component (600) includes a rectangular box (610), which is fixedly installed at the bottom of the mating end of the hanging basket (400). Multiple piezoelectric sensors (620) are evenly installed on the bottom of the rectangular box (610). A groove is formed at the top of the rectangular box (610) directly above the multiple piezoelectric sensors (620). A disc (630) is fitted inside the groove. A guide rod (640) is fixedly installed at the bottom of the disc (630). A monitoring rod (650) is slidably installed on the guide rod (640). 650) One end of the guide rod (640) extends to the other side of the hanging basket (400) and is threaded with an adjusting rod (660). A connecting spring (670) is sleeved on the guide rod (640). One end of the connecting spring (670) is fixedly connected to the monitoring rod (650), and the other end of the connecting spring (670) is fixedly connected to the piezoelectric sensor (620). Multiple piezoelectric sensors (620) are electrically connected to a controller (680). The controller (680) is fixedly installed on the outer wall of the rectangular box (610) and is communicatively connected to a host computer.

3. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: A movable seat (330) is slidably installed on each set of C-shaped guide rails (320). A diagonal tie rod (340) connected to the gantry frame (210) is installed on the movable seat (330). One end of each diagonal tie rod (340) is rotatably connected to the side of the corresponding side gantry frame (210), and the other end is rotatably installed on the corresponding side movable seat (330). The inner cavity of the C-shaped guide rail (320) is symmetrically provided with grooves that slide with the movable seat (330). Multiple slots (321) are evenly provided on the outer side of the C-shaped guide rail (320). A limiting chuck (331) that engages with the slot (321) is slidably installed on the movable seat (330). A locking screw (332) is threaded on one side of the movable seat (330).

4. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The two sides of the hanging basket (400) are provided with inclined plates (211) for strengthening the connection between the gantry frame (210). One end of the inclined plate (211) is fixedly connected to the gantry frame (210), and the other end of the inclined plate (211) is hinged to the side wall of the hanging basket (400). The hanging basket (400) is provided with a slot for insertion and cooperation with the straight connecting plate (350).

5. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The cross beam (220) includes a middle main beam (221), the middle main beam (221) has a threaded through hole in the middle for fixed connection with the upper top frame (510), and telescopic connecting beams (222) are installed at both ends of the middle main beam (221). The end of the connecting beam (222) away from the middle main beam (221) is provided with a plug-in column (223), and the crossbeam of the gantry frame (210) has a plug hole for plugging into the plug-in column (223).

6. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The monitoring components (600) at the bottom of the two opposing hanging basket sections (400) are staggered.

7. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The moving part (300) also includes a skid-mounted vehicle (360) for moving the gantry (210).

8. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: The guide rod (553) is provided in two sets. The two sets of guide rods (553) are movably inserted into the sliding block (551). The front ends of the two sets of guide rods (553) are connected to the movable protrusion (554), and the other ends are fixedly connected to the adjusting plate (555). The two sets of guide rods (553) are arranged in parallel on the upper and lower sides of the screw (556). A handwheel (557) is fixedly installed at the end of the screw (556) away from the movable protrusion (554). A backstop plate (558) is fixedly installed at the top of the sliding block (551).

9. The equipment for casting large-segment cantilever closure sections in bridge construction according to claim 1, characterized in that: Each set of tie rods (540) includes a vertical rod (541), the upper end of which is fixedly connected to a horizontal connecting plate (530), and a horizontal tie plate (542) is fixedly installed at the bottom end of the vertical rod (541). The vertical rod (541) is connected to the middle of the horizontal tie plate (542), and multiple J-shaped tie rods (543) are evenly installed at the bottom end of the horizontal tie plate (542).

Images