Batch prefabricated bridge automatic production line and process thereof

Abstract

The invention provides a batch prefabricated bridge automatic production line and a process thereof, and relates to the field of prefabricated bridge production, and the batch prefabricated bridge automatic production line comprises a steel bar straightening and cutting machine, a numerical control steel bar bending machine, mold mounting equipment, a concrete pouring machine, a concrete conveying pipeline, a guide connecting pipe and a sliding butt joint pipe; the numerical control steel bar bender is positioned in front of the steel bar straightening and cutting machine; the mold mounting equipment is arranged on the right side of the numerical control steel bar bender; the concrete pouring machine is arranged in front of the mold mounting equipment; the concrete conveying pipeline is fixedly connected to the lower portion of the concrete pouring machine. The guide connecting pipe is fixedly connected to the rear side of the concrete conveying pipeline; the sliding butt joint pipe is connected to the inner side of the guide connecting pipe through a spline, the situation that multiple pouring machines need to be maintained separately is avoided, a large amount of time is saved, and the problem that when pouring equipment is maintained regularly, multiple pieces of equipment need to be maintained separately, and long time is consumed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated bridge production, and in particular to an automatic production line for batch prefabricated bridges and a process thereof. Background Art

[0002] The automatic production line for prefabricated bridges integrates automation technology, information technology and advanced manufacturing processes. It is capable of mass-producing prefabricated bridges, significantly improving the production efficiency, quality and consistency of bridge components. When prefabricating bridge components, the steel bars must first be straightened by a steel bar straightening and cutting machine and cut according to the required length. The cut steel bars are then transferred to a CNC steel bar bending machine for bending. The bent steel bars are welded into the steel bar skeleton required for the bridge components and then transferred to the formwork. After the formwork is assembled together, concrete is poured into the formwork by a pump truck for automated pouring. After the prefabricated bridge is formed, the formwork is disassembled and the transport trolley will transfer the prefabricated bridge to the steam generator for maintenance.

[0003] However, in order to ensure the production efficiency of prefabricated bridges, most existing automatic production lines have multiple workstations at the same time, which requires the purchase of multiple casting equipment at the same time, resulting in high production costs for prefabricated bridges. In addition, the maintenance of the casting equipment is relatively complicated. During regular maintenance of the casting equipment, multiple devices need to be maintained separately, which takes a long time, causing the production line to stagnate for a long time, affecting the production efficiency of prefabricated bridges. Summary of the Invention

[0004] In view of this, the present invention provides an automatic production line for batch prefabricated bridges and a process thereof, which avoids the situation where workers need to hold the ends of the steel bars with their hands, avoids the situation where the ends of the steel bars jump abnormally after being stressed and cause harm to the workers, effectively reduces the safety hazards in the use of the CNC steel bar bending machine, and improves the safety of the use of the CNC steel bar bending machine. The friction force exerted on the steel bars is increased by the anti-slip rubber pad, and the clamping force exerted on the steel bars is buffered at the same time, effectively ensuring the fixing effect of the steel bars, ensuring the bending effect of the steel bars, and thus ensuring the production quality of the prefabricated bridges. By changing the position of the first steel bar limiting splint and the second steel bar limiting splint, it is convenient to fix steel bars with different bending angles or different sizes, effectively improving the versatility of the CNC steel bar bending machine, supporting and positioning the bridge frame through the steel bar frame support plate, avoiding the position of the bridge frame from moving during the casting process, and at the same time being able to The prefabricated bridge is limited to facilitate the transfer of the prefabricated bridge by the transfer trolley. The position of the second prefabricated mold and the first prefabricated mold is changed by the action of the hydraulic cylinder to realize automatic disassembly and assembly of the second prefabricated mold and the first prefabricated mold. The flow direction of the concrete is changed by the reversing solenoid valve, so that one concrete pouring machine can pour concrete at multiple workstations, ensuring the continuity of mass production of prefabricated bridges, avoiding the need to purchase multiple concrete pouring machines, reducing the production cost of prefabricated bridges, and also avoiding the need to maintain multiple concrete pouring machines separately, saving a lot of time, reducing the downtime of the production line, and improving the production efficiency of prefabricated bridges. The sliding butt joint is automatically aligned with the pouring port through the movement of the sliding butt joint and is away from the pouring port after pouring is completed, avoiding the friction of the sliding butt joint during the mold opening process that affects the flatness of the end face, ensuring the service life of the sliding butt joint, and avoiding concrete leakage during the pouring process.

[0005] The present invention provides an automatic production line for batch prefabricated bridges and a process thereof, which specifically includes: a steel bar straightening and cutting machine, a CNC steel bar bending machine, a mold installation device, a positioning structure, an opening and closing structure, a concrete pouring machine, a concrete delivery pipeline, a position adjustment structure, a guide connecting pipe and a sliding butt pipe; the CNC steel bar bending machine is located in front of the steel bar straightening and cutting machine; the mold installation devices are provided in plurality, and the plurality of mold installation devices are all arranged to the right of the CNC steel bar bending machine; the positioning structure is arranged on the upper part of the CNC steel bar bending machine; the opening and closing structure is arranged on the lower part of the mold installation device ; The concrete pouring machine is arranged in front of multiple mold installation devices, and a delivery pump is arranged on the inner side of the concrete pouring machine; the concrete delivery pipe is fixedly connected to the lower part of the concrete pouring machine, and the front end of the concrete delivery pipe is connected to the output end of the delivery pump; the position adjustment structure is arranged on the rear side of the concrete delivery pipe; there are multiple guide connecting pipes, and multiple guide connecting pipes are evenly distributed and fixedly connected to the rear side of the concrete delivery pipe; there are multiple sliding butt joints, and multiple sliding butt joints are respectively spline-connected to the inner sides of multiple guide connecting pipes.

[0006] Furthermore, the positioning structure includes a position adjustment screw and a first steel bar limiting splint; two position adjustment screws are provided, and the two position adjustment screws are respectively rotatably connected to the front and rear sides of the CNC steel bar bending machine; two first steel bar limiting splints are provided, and the two first steel bar limiting splints are respectively slid left and right and connected to the front and rear sides of the CNC steel bar bending machine, and the two first steel bar limiting splints are respectively threadedly connected to the two position adjustment screws.

[0007] Furthermore, the positioning structure also includes a second steel bar limiting splint, an anti-slip rubber pad and a limit adjustment screw; two second steel bar limiting splints are provided, and the two second steel bar limiting splints are respectively connected to the lower part of the two first steel bar limiting splints by sliding left and right; four anti-slip rubber pads are provided, and the four anti-slip rubber pads are respectively bonded to the upper part of the two second steel bar limiting splints or the upper part of the two first steel bar limiting splints; two limit adjustment screws are provided, and the two limit adjustment screws are respectively rotatably connected to the lower part of the two first steel bar limiting splints, and the two limit adjustment screws are respectively threadedly connected to the two second steel bar limiting splints.

[0008] Furthermore, the opening and closing structure includes a sliding mounting plate, a first precast mold and a second precast mold; there are multiple sliding mounting plates, and the multiple sliding mounting plates are respectively connected to the upper parts of the multiple mold mounting devices for sliding up and down, and the upper parts of the multiple mold mounting devices are all provided with hydraulic cylinders, and the sliding mounting plate is fixedly connected to the piston rod of the hydraulic cylinder; there are multiple first precast molds, and the multiple first precast molds are respectively bolted to the lower parts of the multiple sliding mounting plates, and the front sides of the multiple first precast molds are provided with casting ports; there are multiple second precast molds, and the multiple second precast molds are respectively connected to the lower parts of the multiple mold mounting devices for sliding up and down.

[0009] Furthermore, the opening and closing structure also includes a steel frame support plate and a limit mounting frame; there are multiple steel frame support plates, and the multiple steel frame support plates are bolted to the left and right sides of multiple mold installation devices; there are multiple limit mounting frames, and the multiple limit mounting frames are bolted to the left and right sides of multiple mold installation devices.

[0010] Furthermore, the opening and closing structure also includes a limiting connecting base plate and a guide mounting rod; there are multiple limiting connecting base plates, and the multiple limiting connecting base plates are respectively bolted to the lower end surfaces of the multiple second prefabricated molds; there are multiple guide mounting rods, and the multiple guide mounting rods are respectively fixedly connected to the left and right sides of the multiple limiting connecting base plates, and the multiple guide mounting rods are respectively connected to the front sides of the multiple mold mounting devices by sliding up and down, and the multiple guide mounting rods are respectively slidably connected to the multiple sliding mounting plates.

[0011] Furthermore, the opening and closing structure also includes a limit drive rack, a power transmission gear and a limit driven rack; there are multiple limit drive racks, and the multiple limit drive racks are respectively fixedly connected to the left and right sides of the multiple sliding mounting plates; there are multiple power transmission gears, and the multiple power transmission gears are respectively rotatably connected to the upper parts of the multiple limit mounting frames, and the multiple power transmission gears are respectively engaged with the multiple limit drive racks; there are multiple limit driven racks, and the multiple limit driven racks are respectively fixedly connected to the upper parts of the multiple guide mounting rods, and the multiple limit driven racks are respectively engaged with the multiple power transmission gears.

[0012] Furthermore, the position adjustment structure includes a reversing solenoid valve and a positioning mounting plate; the reversing solenoid valve is arranged on the front side of the concrete conveying pipe; there are multiple positioning mounting plates, and the multiple positioning mounting plates are evenly distributed and fixedly connected to the rear side of the concrete conveying pipe.

[0013] Furthermore, the position adjustment structure also includes a limit mounting plate and a reset elastic member; there are multiple limit mounting plates, and the multiple limit mounting plates are respectively fixedly connected to the rear sides of the multiple sliding docking tubes; there are multiple reset elastic members, and the multiple limit mounting plates are elastically connected to the concrete conveying pipe through the multiple reset elastic members.

[0014] Furthermore, the position adjustment structure also includes a position adjustment electromagnet and a limiting metal block; there are multiple position adjustment electromagnets, and the multiple position adjustment electromagnets are respectively fixedly connected to the rear sides of the multiple positioning mounting plates, and the control circuits of the multiple position adjustment electromagnets are respectively connected in parallel with the control circuits of the reversing solenoid valves; there are multiple limiting metal blocks, and the multiple limiting metal blocks are respectively fixedly connected to the front sides of the multiple limiting mounting plates.

[0015] Beneficial effects

[0016] The present invention fixes the ends of the steel bars by the first steel bar limiting splint and the second steel bar limiting splint, avoiding the situation that the workers need to hold the ends of the steel bars with their hands, and avoiding the situation that the ends of the steel bars jump abnormally after being stressed and cause harm to the workers, effectively reducing the safety hazards in the use of the CNC steel bar bending machine and improving the safety of the CNC steel bar bending machine. The friction force exerted on the steel bars is increased by the anti-slip rubber pad, and the clamping force exerted on the steel bars is buffered at the same time, effectively ensuring the fixing effect of the steel bars and the bending effect of the steel bars, thereby ensuring the production quality of prefabricated bridges. By changing the positions of the first steel bar limiting splint and the second steel bar limiting splint, it is convenient to fix steel bars with different bending angles or different sizes, effectively improving the versatility of the CNC steel bar bending machine, supporting and positioning the bridge frame by the steel bar frame support plate, avoiding the position of the bridge frame from moving during the casting process, and at the same time being able to The prefabricated bridge is limited to facilitate the transfer of the prefabricated bridge by the transfer trolley, the position of the second prefabricated mold and the first prefabricated mold is changed by the action of the hydraulic cylinder, and the second prefabricated mold and the first prefabricated mold are automatically disassembled and assembled, and the flow direction of the concrete is changed by the reversing solenoid valve, so that one concrete pouring machine can pour at multiple stations, ensuring the continuity of batch production of prefabricated bridges, avoiding the need to purchase multiple concrete pouring machines, reducing the production cost of prefabricated bridges, and also avoiding the need to maintain multiple concrete pouring machines separately, saving a lot of time, reducing the stagnation time of the production line, and improving the production efficiency of prefabricated bridges. The sliding butt joint is automatically aligned with the pouring port through the movement of the sliding butt joint, and is away from the pouring port after the pouring is completed, avoiding the friction of the sliding butt joint during the mold opening process that affects the flatness of the end face, ensuring the service life of the sliding butt joint, and avoiding the leakage of concrete during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the numerically controlled steel bar bending machine of the present invention.

[0022] Figure 3 It is a schematic diagram of the disassembled structure of the first steel bar limiting splint, the second steel bar limiting splint and the limiting adjustment screw of the present invention.

[0023] Figure 4 It is a schematic diagram of the positional relationship between the mold installation equipment and the concrete pouring machine of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the mold installation equipment of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the matching relationship among the position-limiting driving rack, the power transmission gear and the position-limiting driven rack of the present invention.

[0026] Figure 7 It is a schematic diagram of the disassembled structure of the guide connecting pipe and the sliding butt-joint pipe of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the sliding butt joint pipe of the present invention.

[0028] Reference Signs List

[0029] 1. Rebar straightening and cutting machine; 2. CNC rebar bending machine; 201. Position adjustment screw; 202. First rebar limiting splint; 203. Second rebar limiting splint; 204. Anti-slip rubber pad; 205. Limit adjustment screw; 3. Mould installation equipment; 301. First precast mould; 302. Second precast mould; 303. Rebar skeleton support plate; 304. Limit drive rack; 305. Limit mounting frame; 306. Power transmission gear; 307. Limit connecting base plate; 308. Guide mounting rod; 309. Limit driven rack; 4. Concrete pouring machine; 5. Concrete conveying pipeline; 501. Reversing solenoid valve; 502. Positioning mounting plate; 503. Position adjustment electromagnet; 6. Guide connecting pipe; 7. Sliding butt joint pipe; 701. Limit mounting plate; 702. Limit metal block; 703. Resetting elastic member; 310. Sliding mounting plate. DETAILED DESCRIPTION

[0030] Example 1:

[0031] Please refer to Figures 1 to 3 As shown:

[0032] The present invention provides an automatic production line for batch prefabricated bridges and a process thereof, comprising a steel bar straightening and cutting machine 1, a CNC steel bar bending machine 2, a mold installation device 3, a positioning structure and an opening and closing structure; the CNC steel bar bending machine 2 is located in front of the steel bar straightening and cutting machine 1; a plurality of mold installation devices 3 are provided, and the plurality of mold installation devices 3 are all arranged to the right of the CNC steel bar bending machine 2; the positioning structure is arranged on the upper part of the CNC steel bar bending machine 2; and the opening and closing structure is arranged on the lower part of the mold installation device 3.

[0033] Among them, the positioning structure includes a position adjustment screw rod 201 and a first steel bar limiting splint 202; there are two position adjustment screw rods 201, and the two position adjustment screw rods 201 are respectively rotatably connected to the front and rear sides of the CNC steel bar bending machine 2; there are two first steel bar limiting splints 202, and the two first steel bar limiting splints 202 are respectively slid left and right and connected to the front and rear sides of the CNC steel bar bending machine 2, and the two first steel bar limiting splints 202 are respectively threadedly connected to the two position adjustment screw rods 201.

[0034] Among them, the positioning structure also includes a second steel bar limiting splint 203, an anti-slip rubber pad 204 and a limit adjustment screw 205; there are two second steel bar limiting splints 203, and the two second steel bar limiting splints 203 are respectively connected to the lower part of the two first steel bar limiting splints 202 by sliding left and right; there are four anti-slip rubber pads 204, and the four anti-slip rubber pads 204 are respectively bonded to the upper part of the two second steel bar limiting splints 203 or the upper part of the two first steel bar limiting splints 202; there are two limit adjustment screws 205, and the two limit adjustment screws 205 are respectively rotatably connected to the lower part of the two first steel bar limiting splints 202, and the two limit adjustment screws 205 are respectively threadedly connected to the two second steel bar limiting splints 203.

[0035] Among them, the opening and closing structure includes a sliding mounting plate 310, a first precast mold 301 and a second precast mold 302; there are multiple sliding mounting plates 310, and the multiple sliding mounting plates 310 are respectively connected to the upper part of multiple mold mounting devices 3 by sliding up and down, and the upper part of multiple mold mounting devices 3 is provided with a hydraulic cylinder, and the sliding mounting plate 310 is fixedly connected to the piston rod of the hydraulic cylinder; there are multiple first precast molds 301, and the multiple first precast molds 301 are respectively bolted to the lower part of the multiple sliding mounting plates 310, and the front side of the multiple first precast molds 301 is provided with a casting port; there are multiple second precast molds 302, and the multiple second precast molds 302 are respectively connected to the lower part of the multiple mold mounting devices 3 by sliding up and down.

[0036] Among them, the opening and closing structure also includes a steel skeleton support plate 303 and a limit mounting frame 305; there are multiple steel skeleton support plates 303, and the multiple steel skeleton support plates 303 are respectively bolted to the left and right sides of multiple mold installation devices 3; there are multiple limit mounting frames 305, and the multiple limit mounting frames 305 are respectively bolted to the left and right sides of multiple mold installation devices 3.

[0037] Among them, the opening and closing structure also includes a limiting connecting base plate 307 and a guide installation rod 308; there are multiple limiting connecting base plates 307, and the multiple limiting connecting base plates 307 are respectively bolted to the lower end faces of the multiple second prefabricated molds 302; there are multiple guide installation rods 308, and the multiple guide installation rods 308 are respectively fixedly connected to the left and right sides of the multiple limiting connecting base plates 307, and the multiple guide installation rods 308 are respectively slidably connected to the front side of the multiple mold installation devices 3, and the multiple guide installation rods 308 are respectively slidably connected to the multiple sliding installation plates 310.

[0038] Among them, the opening and closing structure also includes a limit drive rack 304, a power transmission gear 306 and a limit driven rack 309; there are multiple limit drive racks 304, and the multiple limit drive racks 304 are respectively fixedly connected to the left and right sides of the multiple sliding mounting plates 310; there are multiple power transmission gears 306, and the multiple power transmission gears 306 are respectively rotatably connected to the upper parts of the multiple limit mounting frames 305, and the multiple power transmission gears 306 are respectively engaged with the multiple limit drive racks 304; there are multiple limit driven racks 309, and the multiple limit driven racks 309 are respectively fixedly connected to the upper parts of the multiple guide mounting rods 308, and the multiple limit driven racks 309 are respectively engaged with the multiple power transmission gears 306.

[0039] The specific usage and function of this embodiment are as follows: when mass-producing prefabricated bridges, the steel bars are first straightened by the steel bar straightening and cutting machine 1, and the steel bars are cut according to the required length. The cut steel bars are placed on the CNC steel bar bending machine 2, and the position adjustment screw rod 201 is rotated to make the position adjustment screw rod 201 drive the first steel bar limiting splint 202 to slide and change its position. When the position adjustment of the first steel bar limiting splint 202 is completed, the limit adjustment screw 205 is rotated to make the limit adjustment screw 205 drive the second steel bar limiting splint 203 to slide along the first steel bar limiting splint 202, and the end of the steel bar is placed between the first steel bar limiting splint 202 and the second steel bar limiting splint 203. The limit adjustment screw 205 is rotated in the opposite direction to make the second steel bar limiting splint 203 close to the first steel bar limiting splint 202 until the first steel bar limiting splint 202 and the second steel bar limiting splint 203 clamp the steel bar. The anti-slip rubber pad 204 can increase the friction force on the steel bar, and also The clamping force is buffered. After the end of the steel bar is fixed, the CNC steel bar bending machine 2 can adjust the curvature of the steel bar as needed. The adjusted steel bar is removed and welded into a bridge skeleton, and the bridge skeleton is transferred to the mold installation device 3 by the transfer trolley. At this time, the steel bar skeleton support plate 303 will support and limit the bridge skeleton. After the bridge skeleton is placed, the hydraulic cylinder is started to push the sliding mounting plate 310 and the first precast mold 301 downward. When the sliding mounting plate 310 moves downward, it will drive the limit drive rack 304 to move downward. When the limit drive rack 304 moves, it will push the power transmission gear 306 above the limit mounting frame 305 to rotate. When the power transmission gear 306 rotates, it will drive the limit driven rack 309 and the guide mounting rod 308 to move upward. When the guide mounting rod 308 moves upward, it will drive the limit connecting base plate 307 and the second precast mold 302 to move upward, so that the second precast mold 302 and the first precast mold 301 are fitted together and wait for concrete pouring.

[0040] Example 2:

[0041] like Figures 4 to 8 As shown:

[0042] On the basis of Example 1, it also includes a concrete pouring machine 4, a concrete delivery pipe 5, a position adjustment structure, a guide connecting pipe 6 and a sliding butt joint pipe 7; the concrete pouring machine 4 is arranged in front of multiple mold installation equipment 3, and a delivery pump is arranged on the inner side of the concrete pouring machine 4; the concrete delivery pipe 5 is fixedly connected to the lower part of the concrete pouring machine 4, and the front end of the concrete delivery pipe 5 is connected to the output end of the delivery pump; the position adjustment structure is arranged on the rear side of the concrete delivery pipe 5; a plurality of guide connecting pipes 6 are provided, and the plurality of guide connecting pipes 6 are evenly distributed and fixedly connected to the rear side of the concrete delivery pipe 5; a plurality of sliding butt joint pipes 7 are provided, and the plurality of sliding butt joint pipes 7 are respectively spline-connected to the inner sides of the plurality of guide connecting pipes 6.

[0043] Among them, the position adjustment structure includes a reversing solenoid valve 501 and a positioning mounting plate 502; the reversing solenoid valve 501 is arranged on the front side of the concrete conveying pipe 5; there are multiple positioning mounting plates 502, and the multiple positioning mounting plates 502 are evenly distributed and fixedly connected to the rear side of the concrete conveying pipe 5.

[0044] Among them, the position adjustment structure also includes a limit mounting plate 701 and a reset elastic member 703; there are multiple limit mounting plates 701, and the multiple limit mounting plates 701 are respectively fixedly connected to the rear sides of the multiple sliding docking pipes 7; there are multiple reset elastic members 703, and the multiple limit mounting plates 701 are elastically connected to the concrete conveying pipe 5 through the multiple reset elastic members 703.

[0045] Among them, the position adjustment structure also includes a position adjustment electromagnet 503 and a limiting metal block 702; there are multiple position adjustment electromagnets 503, and the multiple position adjustment electromagnets 503 are respectively fixedly connected to the rear sides of multiple positioning mounting plates 502, and the control circuits of the multiple position adjustment electromagnets 503 are respectively connected in parallel with the control circuits of the reversing solenoid valves 501; there are multiple limiting metal blocks 702, and the multiple limiting metal blocks 702 are respectively fixedly connected to the front sides of multiple limiting mounting plates 701.

[0046] The specific usage and function of this embodiment are as follows: After the second precast mold 302 and the first precast mold 301 are attached together, the delivery pump in the concrete pouring machine 4 delivers concrete to the concrete delivery pipe 5. At this time, the reversing solenoid valve 501 can change the flow direction of the concrete, so that the concrete flows along the concrete delivery pipe 5 to the corresponding guide connecting pipe 6 and the sliding butt joint pipe 7. At this time, the position adjustment electromagnet 503 at the guide connecting pipe 6 where no flow is generated is energized to generate magnetic force to attract the limit metal block 702 and the limit mounting plate 701, so that the limit mounting plate 701 drives the sliding butt joint pipe 7. The docking tube 7 is retracted to facilitate the separation of the second precast mold 302 and the first precast mold 301 on the outside of the precast bridge that has been cast. The position adjustment electromagnet 503 at the circulating guide connecting tube 6 and the sliding docking tube 7 is powered off and reset by the elastic member 703, which pushes the sliding docking tube 7 to reset, making it convenient for the sliding docking tube 7 to align with the casting port. The positioning mounting plate 502 can determine the installation position of the position adjustment electromagnet 503. After the cast precast bridge is formed, the second precast mold 302 and the first precast mold 301 are separated, and the transfer trolley will transfer the precast bridge to the maintenance area for maintenance.

[0047] In this article, there are several points to note:

[0048] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0049] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0050] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An automatic production line for batch prefabricated bridges, comprising a steel bar straightening and cutting machine (1), a numerically controlled steel bar bending machine (2), a mold installation device (3), a positioning structure, an opening and closing structure, a concrete pouring machine (4), a concrete delivery pipe (5), a position adjustment structure, a guide connecting pipe (6) and a sliding butt joint pipe (7); the numerically controlled steel bar bending machine (2) is located in front of the steel bar straightening and cutting machine (1); a plurality of the mold installation devices (3) are provided, and the plurality of the mold installation devices (3) are all arranged on the right side of the numerically controlled steel bar bending machine (2); and the characteristics are: The positioning structure is arranged at the upper part of the CNC steel bar bending machine (2); the opening and closing structure is arranged at the lower part of the mold installation device (3); the concrete pouring machine (4) is arranged in front of multiple mold installation devices (3), and a delivery pump is arranged on the inner side of the concrete pouring machine (4); the concrete delivery pipe (5) is fixedly connected to the lower part of the concrete pouring machine (4), and the front end of the concrete delivery pipe (5) is connected to the output end of the delivery pump; the position adjustment structure is arranged on the rear side of the concrete delivery pipe (5); a plurality of guide connecting pipes (6) are provided, and the plurality of guide connecting pipes (6) are evenly distributed and fixedly connected to the rear side of the concrete delivery pipe (5); a plurality of sliding butt joint pipes (7) are provided, and the plurality of sliding butt joint pipes (7) are respectively spline-connected to the inner sides of the plurality of guide connecting pipes (6).

2. The automatic production line for batch prefabricated bridges according to claim 1, characterized in that: The positioning structure comprises a position adjustment screw rod (201) and a first steel bar limiting clamp (202); two position adjustment screw rods (201) are provided, and the two position adjustment screw rods (201) are respectively rotatably connected to the front and rear sides of the numerical control steel bar bending machine (2); two first steel bar limiting clamps (202) are provided, and the two first steel bar limiting clamps (202) are respectively slidably connected to the front and rear sides of the numerical control steel bar bending machine (2), and the two first steel bar limiting clamps (202) are respectively threadedly connected to the two position adjustment screw rods (201).

3. The automatic production line for batch prefabricated bridges according to claim 2, characterized in that: The positioning structure further comprises a second steel bar limiting splint (203), an anti-skid rubber pad (204) and a limiting adjustment screw (205); two second steel bar limiting splints (203) are provided, and the two second steel bar limiting splints (203) are respectively connected to the lower parts of the two first steel bar limiting splints (202) by sliding left and right; four anti-skid rubber pads (204) are provided, and the four anti-skid rubber pads (204) are respectively bonded to the upper parts of the two second steel bar limiting splints (203) or the upper parts of the two first steel bar limiting splints (202); two limiting adjustment screws (205) are provided, and the two limiting adjustment screws (205) are respectively rotatably connected to the lower parts of the two first steel bar limiting splints (202), and the two limiting adjustment screws (205) are respectively threadedly connected to the two second steel bar limiting splints (203).

4. The automatic production line for batch prefabricated bridges according to claim 1, characterized in that: The opening and closing structure includes a sliding mounting plate (310), a first precast mold (301) and a second precast mold (302); a plurality of the sliding mounting plates (310) are provided, and the plurality of sliding mounting plates (310) are respectively connected to the upper parts of the plurality of mold mounting devices (3) by sliding up and down, and the upper parts of the plurality of mold mounting devices (3) are all provided with hydraulic cylinders, and the sliding mounting plates (310) are fixedly connected to the piston rods of the hydraulic cylinders; a plurality of the first precast molds (301) are provided, and the plurality of the first precast molds (301) are respectively connected to the lower parts of the plurality of the sliding mounting plates (310) by bolts, and the front sides of the plurality of the first precast molds (301) are all provided with pouring ports; a plurality of the second precast molds (302) are provided, and the plurality of the second precast molds (302) are respectively connected to the lower parts of the plurality of the mold mounting devices (3) by sliding up and down.

5. The automatic production line for batch prefabricated bridges according to claim 4, characterized in that: The opening and closing structure further comprises a steel frame support plate (303) and a position limiting mounting frame (305); a plurality of the steel frame support plates (303) are provided, and the plurality of the steel frame support plates (303) are respectively bolted to the left and right sides of the plurality of the mold installation devices (3); a plurality of the position limiting mounting frames (305) are provided, and the plurality of the position limiting mounting frames (305) are respectively bolted to the left and right sides of the plurality of the mold installation devices (3).

6. The automatic production line for batch prefabricated bridges according to claim 5, characterized in that: The opening and closing structure further includes a limiting connection base plate (307) and a guide mounting rod (308); a plurality of the limiting connection base plates (307) are provided, and the plurality of the limiting connection base plates (307) are respectively bolted to the lower end surfaces of the plurality of second prefabricated molds (302); a plurality of the guide mounting rods (308) are provided, and the plurality of the guide mounting rods (308) are respectively fixedly connected to the left and right sides of the plurality of the limiting connection base plates (307), and the plurality of the guide mounting rods (308) are respectively slidably connected up and down to the front sides of the plurality of the mold mounting devices (3), and the plurality of the guide mounting rods (308) are respectively slidably connected to the plurality of the sliding mounting plates (310).

7. The automatic production line for batch prefabricated bridges according to claim 6, characterized in that: The opening and closing structure further includes a limit drive rack (304), a power transmission gear (306) and a limit driven rack (309); a plurality of the limit drive racks (304) are provided, and the plurality of limit drive racks (304) are respectively fixedly connected to the left and right sides of the plurality of sliding mounting plates (310); a plurality of the power transmission gears (306) are provided, and the plurality of power transmission gears (306) are respectively rotatably connected to the upper parts of the plurality of limit mounting frames (305), and the plurality of power transmission gears (306) are respectively meshed with the plurality of limit drive racks (304); a plurality of the limit driven racks (309) are provided, and the plurality of limit driven racks (309) are respectively fixedly connected to the upper parts of the plurality of guide mounting rods (308), and the plurality of limit driven racks (309) are respectively meshed with the plurality of power transmission gears (306).

8. The automatic production line for batch prefabricated bridges according to claim 1, characterized in that: The position adjustment structure comprises a reversing solenoid valve (501), a positioning mounting plate (502), a limiting mounting plate (701) and a reset elastic member (703); the reversing solenoid valve (501) is arranged on the front side of the concrete conveying pipe (5); a plurality of positioning mounting plates (502) are provided, and the plurality of positioning mounting plates (502) are evenly distributed and fixedly connected to the rear side of the concrete conveying pipe (5); a plurality of limiting mounting plates (701) are provided, and the plurality of limiting mounting plates (701) are respectively fixedly connected to the rear sides of the plurality of sliding butt joint pipes (7); a plurality of reset elastic members (703) are provided, and the plurality of limiting mounting plates (701) are elastically connected to the concrete conveying pipe (5) through the plurality of reset elastic members (703).

9. The automatic production line for batch prefabricated bridges according to claim 8, characterized in that: The position adjustment structure further comprises a position adjustment electromagnet (503) and a limiting metal block (702); a plurality of the position adjustment electromagnets (503) are provided, and the plurality of the position adjustment electromagnets (503) are respectively fixedly connected to the rear sides of the plurality of positioning mounting plates (502), and the control circuits of the plurality of the position adjustment electromagnets (503) are respectively connected in parallel with the control circuit of the reversing solenoid valve (501); a plurality of the limiting metal blocks (702) are provided, and the plurality of the limiting metal blocks (702) are respectively fixedly connected to the front sides of the plurality of limiting mounting plates (701).

10. The automatic production process for batch prefabricated bridges according to claim 1, characterized in that: S1. The steel bars are straightened and cut to the required length using a rebar straightening and cutting machine. The CNC rebar bending machine adjusts the curvature of the steel bars as needed. After adjustment, the steel bars are welded into the bridge frame. S2. The transfer trolley transfers the bridge frame to the mold installation equipment, and the second precast mold and the first precast mold are automatically fitted together to wait for concrete pouring; S3. Concrete flows along the concrete delivery pipe to the corresponding guide connecting pipe and sliding butt pipe, through the pouring port into the second precast mold and the first precast mold; S4. After the pouring is completed, the second precast mold and the first precast mold are automatically separated, and the transfer trolley transfers the precast bridge to the maintenance area for maintenance.

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