Convection type bridge prefabricated part flow production line

Abstract

The invention provides a convection type bridge prefabricated part flow production line. The convection type bridge prefabricated part flow production line comprises a trolley and a ferry area. The ferry area is located in the center area of the assembly line, the steel bar binding machining area, the concrete pouring area, the steam curing shed, the primary tensioning area and the curing and secondary tensioning area are located on the periphery of the ferry area, and the beam storage area is arranged on one side of the curing and secondary tensioning area. The procedures of steel bar binding, formwork closing, concrete pouring, steam curing, formwork removal, pre-tensioning, outdoor curing and final tensioning and the like are completed one by one, and intensive assembly line type production of prefabricated parts is achieved; compared with a conventional longitudinal flow production line, the flow production line is compact in layout and small in occupied area, the situation that follow-up production is affected by preorder faults does not exist among the procedures any more, and production scheduling is flexible and reliable. The convection type bridge prefabricated part flow production line has the beneficial effects that the construction efficiency can be improved conveniently, and the formworks can be dismantled rapidly.

Description

Technical Field

[0001] The invention relates to the technical field of bridge prefabricated component production, and in particular to a convection type bridge prefabricated component production line. Background Art

[0002] Prefabricated bridge components have the advantages of fast construction speed, large span, high bearing capacity, low overall cost, no influence of climate, all-weather construction, and cost reduction. Therefore, the proportion of prefabricated parts used in the bridge construction process is increasing.

[0003] At present, precast bridge beams are generally produced on fixed pedestals or reciprocating assembly lines with moving bottom molds. In this production process, the turnover rate of templates and equipment is low, and the site occupies a large area. In addition, in the process of removing the templates, since large integral steel templates are mostly used when casting precast beams, the side templates are large in size and weight, and hoisting machinery is required to remove the templates. When the templates are removed by hoisting machinery, due to improper operation, the templates often move upward to squeeze the flanges, and the flange plates are subjected to upward external forces, causing cracks at their roots, which reduces the quality of the precast beams.

[0004] Therefore, it is necessary to provide a new convection bridge prefabricated component production line to solve the above technical problems. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a convection type bridge prefabricated component production line which is convenient for improving construction efficiency and quickly removing formwork.

[0006] In order to solve the above technical problems, the convection type bridge prefabricated component production line provided by the present invention comprises: a trolley and a ferry area; the ferry area is located in the central area of ​​the production line, and the steel bar binding processing area, concrete pouring area, steam curing shed, primary tensioning area, curing and secondary tensioning area are located around the ferry area, a template rest area is arranged on one side of the ferry area, and a concrete mixing station is installed on one side of the concrete pouring area; a beam storage area is arranged on one side of the curing and secondary tensioning area, and during the production process, the trolley is transferred to each workstation through the ferry area, and the processes of steel bar binding, template closing, concrete pouring, steam curing, demolding, pre-tensioning, outdoor curing final tensioning, etc. are completed one by one, so as to realize the intensive prefabricated component production line; The trolley comprises a base, a template for producing the precast beam is installed on the surface of the base, a plurality of sliding mechanisms for driving the movement of the precast beam are arranged at the bottom end of the base, and a steering mechanism for changing the movement direction of the trolley and the precast beam is installed on the surface of the sliding mechanism; a compression mechanism for facilitating demoulding and hoisting is installed on the bottom surface of the base, and the compression mechanism comprises a second box body, the second box body is fixed to the bottom surface of the base, the interior of the second box body is slidably connected to a slide plate and a compression rod, the two ends of the plurality of compression rods are respectively fixedly connected to the slide plate and the compression plate, the compression plate with a "T"-shaped side wall section is engaged with the interior of the base, and the compression plate contacts the precast beam. The bottom surface of the beam is controlled; a sealing ring is installed inside the base to prevent leakage of slurry, the inside of the sealing ring is engaged with a card plate, and the card plate is fixed to the bottom surface of the compression plate; an adjustment mechanism for adjusting the height of the base and the compression rod is installed on the bottom surface of the base, and the adjustment mechanism includes a mounting rod, and a plurality of mounting rods are installed on the bottom surface of the second box body, and the mounting rod is installed on the top surface of the adjustment cylinder, and the adjustment cylinder and the inside of the mounting rod are slidably connected to the fixing rod, and a piston is installed in the center of the side wall of the fixing rod, and the piston is slidably connected to the inside of the adjusting cylinder; both ends of the fixing rod are fixedly connected to the fixing seat, and the fixing seat at the top end of the fixing rod is slidably connected to the inside of the fixing rod.

[0007] Preferably, the template includes a first template and a second template, the side walls of the prefabricated beam are installed with the first template and the second template spliced ​​to each other, the side walls of the first template and the second template are both installed with brackets, and the brackets and the side walls of the slide are rotatably connected to the hydraulic rod for adjusting the position of the first template and the second template.

[0008] Preferably, the template also includes guide rails, a plurality of the guide rails are installed on the surface of the base, and the inside of the guide rails is slidably connected to the slide seat; the side wall of the base is rotatably connected to a plurality of screw rods, and the screw rods are threadedly connected to the slide seat.

[0009] Preferably, the sliding mechanism includes a support rod, a plurality of the support rods are arranged on the bottom surface of the base, a guard plate is installed at the bottom end of the support rod, the inside of the guard plate is rotatably connected to the roller, and a transmission is installed on the side wall of the guard plate.

[0010] Preferably, the steering mechanism includes a first box body, a plurality of the first boxes are installed on the bottom surface of the base, the first box body is internally rotatably connected to a first gear and a second gear that mesh with each other, the side wall of the support rod is fixedly connected to the second gear, the first box body is internally slidably connected to a toothed plate for fixing the second gear, and the side wall of the first box body is installed with a hydraulic rod for driving the toothed plate to move; the top end of the support rod is fixedly connected to a connecting sleeve with a funnel-shaped top end, the connecting sleeve is rotatably connected to the inside of a support sleeve, and the support sleeve is fixed to the bottom surface of the base; a rubber pad for increasing the rotation resistance of the support rod is installed inside the support sleeve, and a limiting ring for preventing the support rod from moving upward is installed inside the support sleeve.

[0011] Preferably, servo motors are installed on the base, the transmission and the side wall of the first box respectively, the servo motors are connected to the screw rod and the first gear, and the diameter of the first gear is smaller than the diameter of the second gear.

[0012] Preferably, the adjusting mechanism also includes an oil tank, the oil tank is installed at the bottom end of the second box body, and a hydraulic oil pump is installed inside the oil tank; multiple oil pipes are installed on both sides of the adjusting cylinder and the hydraulic rod, the oil pipes on one side of the adjusting cylinder and the hydraulic rod are connected to the interior of the oil tank, and the oil pipes on the other side of the adjusting cylinder and the hydraulic rod are connected to the hydraulic oil pump.

[0013] Preferably, the cross section of the sealing ring is a trapezoidal structure, and the cross section of the side wall of the clamping plate is a triangular structure.

[0014] Preferably, the compression plate is located at the center of the base, and the shortest distance between adjacent compression plates is smaller than the length of the compression plate.

[0015] Compared with the related art, the convection type bridge prefabricated component production line provided by the present invention has the following beneficial effects: The present invention provides a convection-type bridge prefabricated component production line, wherein a ferrying area is located in the center area of ​​the production line, and a steel bar binding processing area, a concrete pouring area, a steaming shed, a primary tensioning area, a curing and secondary tensioning area are located around the ferrying area. A beam storage area is arranged on one side of the curing and secondary tensioning area. During the production process, the trolley is transferred to each workstation through the ferrying area, and the processes of steel bar binding, formwork closing, concrete pouring, steam curing, formwork removal, pre-tensioning, outdoor curing and final tensioning are completed one by one, thereby realizing intensive prefabricated component production in an assembly line. When the steel bars are processed and spliced ​​in the steel bar processing area to form a steel bar skeleton, a crane is used to lift the steel bar skeleton and place it on the surface of the base. The template on the surface of the base is closed, and the sliding mechanism and the steering mechanism are operated to make the trolley move to drive the base and the template into the concrete pouring area to pour concrete; after the pouring is completed, the trolley moves to carry the precast beam to the steam curing shed for steam curing. After the steam curing is completed, the trolley moves to the primary tensioning area, and the first templates at both ends of the precast beam are first removed. When the second template is removed, the second template has a large volume and weight. The servo motor is turned on to drive the screw to rotate. Using the principle of screw transmission, the screw drives the slide seat to move toward the edge of the base. The contraction of the hydraulic rod also drives the second template to move toward the edge of the base, increasing the thrust of the second template to move toward the edge. At the same time, the hydraulic oil enters the inside of the adjusting cylinder, so that the piston and the fixed rod move upward to push the slide plate, the compression rod and the compression plate to move slowly upward. The compression plate pushes the precast beam upward. The side wall of the bottom end of the precast beam is inclined. When the compression plate pushes the precast beam to move upward, the precast beam tilts toward the direction of the edge line of the base to squeeze the second template, so as to avoid excessive squeezing force between the precast beam and the second template causing damage to the precast beam. The screw rod and the hydraulic rod pull the second template outward, and the precast beam squeezes the second template from the inside to the outside, so that the second template is quickly separated from the precast beam. At the same time, the precast beam moves upward and slides out of the second template, so as to avoid the flange plate of the precast beam being subjected to upward pressure. External force causes cracks at the root; after the formwork is removed, the steel strands are threaded and prestress is applied for the first time; after the initial tensioning, the compression plate lifts the precast beam to facilitate wrapping and fixing the sling on the side wall of the precast beam, and the precast beam is lifted to the curing and secondary tensioning area by a crane. After natural curing, the final tensioning, grouting and anchoring are carried out, and the trolley moves to the steel bar installation platform to produce the next precast beam. This production line has a smooth flow, compact layout, and small footprint. The various processes do not affect each other, and the production capacity of the formwork and equipment can be fully utilized to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a convection bridge prefabricated component production line provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the trolley structure shown; Figure 3 for Figure 2 An enlarged schematic diagram of the structure at A shown; Figure 4 for Figure 2 The schematic diagram of the base turning is shown; Figure 5 for Figure 2 Schematic diagram of template removal shown; Figure 6 for Figure 2 The schematic diagram of the hoisting of precast beams is shown; Figure 7 for Figure 2 An enlarged schematic diagram of the structure at B shown; Figure 8 for Figure 7 A top view of the internal structure of the first box body is shown; Fig. 9 for Figure 2 A top view of the base structure shown; Fig.10 The present invention provides a production flow chart of prefabricated beams.

[0017] Numbers in the figure: 100, trolley, 1, base, 2, template, 21, first template, 22, second template, 23, bracket, 24, hydraulic rod, 25, slide seat, 26, screw, 27, guide rail, 28, servo motor, 3, prefabricated beam, 31, steel frame, 4, sliding mechanism, 41, support rod, 42, transmission, 43, pulley, 44, guard plate, 5, steering mechanism, 51, first box, 52, first gear, 53, second gear, 54, connecting sleeve, 55, limiting ring, 56, support sleeve, 57, rubber pad, 58, tooth plate, 6, compression mechanism, 61. Second box, 62. Slide plate, 63. Compression rod, 64. Compression plate, 65. Cardan, 66. Sealing ring, 7. Adjustment mechanism, 71. Fixed rod, 72. Piston, 73. Mounting rod, 74. Fixed seat, 75. Oil pipe, 76. Adjustment cylinder, 77. Oil tank, 78. Hydraulic oil pump, 8. Lifting rope, 101. Ferry area, 1011. Formwork rest area, 102. Rebar processing area, 103. Concrete pouring area, 1031. Concrete mixing station, 104. Steaming shed, 105. Primary tensioning area, 106. Curing and secondary tensioning area, 107. Beam storage area. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0019] Please refer to Figures 1 to 10 ,in, Figure 1A schematic diagram of the structure of a convection bridge prefabricated component production line provided by the present invention; Figure 2 for Figure 1 The schematic diagram of the trolley structure shown; Figure 3 for Figure 2 An enlarged schematic diagram of the structure at A shown; Figure 4 for Figure 2 The schematic diagram of the base turning is shown; Figure 5 for Figure 2 Schematic diagram of template removal shown; Figure 6 for Figure 2 The schematic diagram of the hoisting of precast beams is shown; Figure 7 for Figure 2 An enlarged schematic diagram of the structure at B shown; Figure 8 for Figure 7 A top view of the internal structure of the first box body is shown; Fig. 9 for Figure 2 A top view of the base structure shown; Fig.10The present invention provides a production flow chart of prefabricated beams. The convection type bridge prefabricated component production line includes: a trolley 100 and a ferry area 101; the ferry area 101 is located in the central area of ​​the production line, and the steel bar binding processing area 102, the concrete pouring area 103, the steam curing shed 104, the primary tensioning area 105, and the curing and secondary tensioning area 106 are located around the ferry area 101. A template rest area 1011 is set on one side of the ferry area 101. In order to facilitate the replacement and maintenance of the template, a concrete mixing station 1031 is installed on one side of the concrete pouring area 103; a beam storage area 107 is set on one side of the curing and secondary tensioning area 106. During the production process, the trolley 100 circulates to each workstation through the ferry area 101, and completes the processes of steel bar binding, template closing, concrete pouring, steam curing, demolding, pre-tensioning, outdoor curing and final tensioning one by one, so as to realize the intensive prefabricated component assembly line production; in the specific production, the trolley 100 is first First, the steel bar binding processing area 102 completes the installation of the top and web steel bars and the closing of the formwork; then the trolley 100 travels above the ferry area 101 to the concrete pouring area 103, and the concrete mixing station 1031 transports the concrete into the concrete pouring area 103 after mixing, and pours concrete into the formwork in the concrete pouring area 103; then the trolley 100 travels to the steaming shed 104 for static and steam curing work; then the trolley 105 completes the opening of the formwork 2 and the prestressing; then the trolley 100 travels to all the production processes on one side of the ferry area 101; finally, it is stored in the beam storage area through a gantry crane; compared with conventional longitudinal production lines, this production line has a compact layout and a small footprint, and there is no situation where the previous failure between the processes affects the subsequent production, and the production scheduling is flexible and reliable. In specific production, the trolley 100 travels to the steel bar binding processing area 102 to complete the installation of the top and web steel bars and the closing of the formwork; then the trolley 100 moves above the ferry area to the concrete pouring area 103, and completes the concrete pouring work in the concrete pouring area 103; then the rear trolley 100 travels to the interior of the steaming shed 104 for static and steam curing work; then the trolley 100 travels to the primary tensioning area 105 to complete the opening of the formwork 2 and the prestressing of the precast beam prestressing. ; Then the trolley 100 travels to one side of the ferry area 101, and uses a crane to lift the precast beam 3 to the curing and secondary tensioning area 106, and spray curing is performed to achieve the designed strength, and then the final tensioning grouting and anchoring are performed to complete all production processes, and finally the precast beam is stored in the beam storage area 107 by a gantry crane; compared with conventional longitudinal production lines, this production line has a compact layout and a small footprint. There is no situation where the previous failure between the processes affects the subsequent production, and the production scheduling is flexible and reliable.

[0020] The trolley 100 includes a base 1, and the surface of the base 1 is installed with a template 2 for producing the precast beam 3, and the template 2 includes a first template 21 and a second template 22. The side wall of the precast beam 3 is installed with the first template 21 and the second template 22 spliced ​​to each other, and the side walls of the first template 21 and the second template 22 are both installed with a bracket 23, and the bracket 23 and the side wall of the slide 25 are rotatably connected to a hydraulic rod 24 for adjusting the position of the first template 21 and the second template 22. The template 2 also includes a guide rail 27. A plurality of guide rails 27 are installed on the surface of the base 1. The inside of the guide rail 27 is slidably connected to the slide 25. The side wall of the base 1 is rotatably connected to a plurality of screw rods 26, and the screw rods 26 are threadedly connected to the slide 25. When the steel skeleton 31 is placed on the surface of the base 1, the servo motor 28 is turned on, and the servo motor 28 drives the screw rods 26 to rotate. The slide 25 is moved along the guide rail 27 by utilizing the principle of screw transmission. The first template 21 and the second template 22 gradually approach the steel skeleton 31, and the hydraulic rod 24 is extended and retracted to drive the first template 21 and the second template 22 to rotate, and the positions of the first template 21 and the second template 22 are fine-tuned so that the first template 21 and the second template 22 are closed to each other.

[0021] A plurality of sliding mechanisms 4 for driving the movement of the precast beam 3 are arranged at the bottom end of the base 1, and the sliding mechanisms 4 include support rods 41. A plurality of the support rods 41 are arranged on the bottom surface of the base 1, and a guard plate 44 is installed at the bottom end of the support rod 41. The inner rotation of the guard plate 44 is connected to a roller 43, and a transmission 42 is installed on the side wall of the guard plate 44. The servo motor 28 drives the output shaft to rotate, and the output shaft changes the rotation speed through the transmission 42 to drive the roller 43 to rotate, thereby driving the base 1 and the precast beam 3 to move.

[0022] The bottom surface of the base 1 is installed with an adjustment mechanism 7 for adjusting the height of the base 1 and the compression rod 63, and the adjustment mechanism 7 includes a mounting rod 73. A plurality of mounting rods 73 are installed on the bottom surface of the second box body 61, and the mounting rod 73 is installed on the top surface of the adjustment cylinder 76. The interior of the adjustment cylinder 76 and the mounting rod 73 are slidably connected to a fixing rod 71, and a piston 72 is installed in the center of the side wall of the fixing rod 71, and the piston 72 is slidably connected to the interior of the adjusting cylinder 76; both ends of the fixing rod 71 are fixedly connected to a fixing seat 74, and the fixing seat 74 at the top of the fixing rod 71 is slidably connected to the interior of the mounting rod 73. The adjusting mechanism 7 also includes an oil tank 77, the oil tank 77 is installed at the bottom end of the second box body 61, and a hydraulic oil pump 78 is installed inside the oil tank 77; multiple oil pipes 75 are installed on both sides of the adjusting cylinder 76 and the hydraulic rod 24, the adjusting cylinder 76 and the oil pipe 75 on one side of the hydraulic rod 24 are connected to the inside of the oil tank 77, and the adjusting cylinder 76 and the oil pipe 75 on the other side of the hydraulic rod 24 are connected to the hydraulic oil pump 78; when it is necessary to change the movement direction of the base 1, the hydraulic oil pump 78 is turned on, and when the hydraulic oil pump 78 is turned on, the hydraulic oil inside the oil tank 77 enters the top end of the adjusting cylinder 76 through one of the oil pipes 75, and the hydraulic oil inside the bottom end of the adjusting cylinder 76 enters the inside of the oil tank 77 again through another oil pipe 75, so that the piston 72 and the fixing rod 71 move downward, thereby lifting the base 1 upward and the roller 43 is suspended.The surface of the sliding mechanism 4 is installed with a steering mechanism 5 for changing the movement direction of the trolley 100 and the precast beam 3; the steering mechanism 5 includes a first box body 51, and a plurality of the first boxes 51 are installed on the bottom surface of the base 1, and the first boxes 51 are internally rotatably connected to the first gear 52 and the second gear 53 that are meshed with each other; the side wall of the support rod 41 is fixedly connected to the second gear 53, and the first box body 51 is internally slidably connected to the toothed plate 58 for fixing the second gear 53, and the side wall of the first box body 51 is installed with a hydraulic rod 2 for driving the toothed plate 58 to move 4; the top of the support rod 41 is fixedly connected to the funnel-shaped connecting sleeve 54, the connecting sleeve 54 is rotatably connected to the inside of the support sleeve 56, the support sleeve 56 is fixed to the bottom surface of the base 1; the inside of the support sleeve 56 is installed with a rubber pad 57 for increasing the rotation resistance of the support rod 41, and the inside of the support sleeve 56 is installed with a limit ring 55 for preventing the support rod 41 from moving upward, the servo motor 28 on the side wall of the first box body 51 is opened, and the servo motor 28 drives the first gear 52 and the second gear 53 to rotate, and the first gear 52 The diameter of the first gear 52 is smaller than that of the second gear 53, so that the first gear 52 drives the second gear 53 to rotate more labor-savingly, and the second gear 53 drives the support rod 41, the guard plate 44 and the roller 43 to rotate, changing the movement direction of the roller 43 and the base 1. When the roller 43 is in a suitable position, the hydraulic rod 24 is opened to push the tooth plate 58 to move, so that the tooth plate 58 engages with the second gear 53 to fix the position of the support rod 41 and the roller 53, and the hydraulic oil pump 78 is turned on, and the fixing rod 71 is retracted to lower the base 1, and the roller 43 is in contact with the ground, and the roller 43 bears the weight of the trolley 100 and the precast beam 3. Under the action of the weight, the support rod 41 pushes the connecting sleeve 54 to move an end distance upward inside the support sleeve 56, and the connecting sleeve 54 squeezes the rubber pad 57 to increase the friction between the rubber pad 57 and the connecting sleeve 54. The top of the connecting sleeve 54 is funnel-shaped, which increases the contact area with the rubber pad 57, increases the rotation resistance of the connecting sleeve 54, increases the stability of the support rod 41, and avoids the movement direction of the roller 43 from shifting when rotating.

[0023] The bottom surface of the base 1 is installed with a compression mechanism 6 for easy demoulding and hoisting, and the compression mechanism 6 includes a second box body 61, and the second box body 61 is fixed to the bottom surface of the base 1. The interior of the second box body 61 is slidably connected to a slide plate 62 and a compression rod 63, and the two ends of a plurality of compression rods 63 are respectively fixedly connected to the slide plate 62 and a compression plate 64, and the compression plate 64 with a "T"-shaped side wall section is engaged with the interior of the base 1, and the compression plate 64 contacts the bottom surface of the precast beam 3; first, the first template 21 at both ends of the precast beam 3 is removed. When the second template 22 is removed, the second template 22 has a large volume and weight. The servo motor 28 is turned on to drive the screw 26 to rotate. The screw 26 drives the slide seat 58 to move toward the edge of the base 4 by using the principle of screw transmission. The contraction of the hydraulic rod 24 also drives the second template 22 to move toward the edge of the base 1, increasing the second template 22 to the edge The thrust of the movement, and at the same time, the hydraulic oil enters the interior of the adjusting cylinder 71, so that the piston 72 and the fixing rod 71 move upward to push the slide plate 62, the compression rod 63 and the compression plate 64 to move slowly upward, and the compression plate 64 pushes the precast beam 3 to move upward. Since the bottom end side wall of the precast beam 3 is inclined, when the compression plate 64 pushes the precast beam 3 to move upward, the precast beam 3 is inclined toward the direction of the edge line of the base 1 to squeeze the second template 22, so as to avoid the extrusion force between the precast beam 3 and the second template 22 being too large to cause damage to the precast beam 3, the screw rod 26 and the hydraulic rod 24 pull the second template 22 outward, and the precast beam 3 squeezes the second template 22 from the inside to the outside, so that the second template 22 is quickly separated from the precast beam 3, and at the same time, the precast beam 3 moves upward and slides out of the second template 22, so as to avoid the flange plate of the precast beam 3 being subjected to the upward external force to cause cracks at its root.

[0024] A sealing ring 66 for preventing leakage of slurry is installed inside the base 1, and a card plate 65 is engaged inside the sealing ring 66, and the card plate 65 is fixed to the bottom surface of the compression plate 64; when the compression plate 64 is engaged with the base 1, the base 1 drives the card plate 65 to enter the inside of the sealing ring 66, and the cross-section of the sealing ring 66 is a trapezoidal structure to prevent the sealing ring 66 from slipping out of the inside of the base 1. The side wall cross-section of the card plate 65 is a triangular structure. When the card plate 65 enters the inside of the sealing ring 66, the squeezing force of the card plate 65 on the sealing ring 66 gradually increases from bottom to top, thereby improving the sealing performance and preventing leakage of slurry.

[0025] The servo motor 28 is installed on the side wall of the base 1, the transmission 42 and the first box body 51 respectively. The servo motor 28 connects the screw rod 26 and the first gear 52 so that the servo motor 28 can drive the transmission 42, the screw rod 26 and the first gear 52 to start operation.

[0026] The compression plate 64 is located at the center of the base 1, and the shortest distance between adjacent compression plates 64 is less than the length of the compression plate 64. In order to avoid the distance between the compression plates 64 being too large, the contact area between the compression plate 64 and the bottom surface of the prefabricated beam 3 is increased to better support the prefabricated beam 3.

[0027] The working principle of the convection type bridge prefabricated component production line provided by the present invention is as follows: the device is connected to an external power supply, the steel bars are processed and spliced ​​in the steel bar processing area 102 to form a steel bar skeleton 31, and the steel bar skeleton 31 is lifted by a crane and placed on the surface of the base 1. After the steel bar skeleton 31 is placed on the surface of the base 1, the servo motor 28 is turned on, and the servo motor 28 drives the screw 26 to rotate, and the slide 25 is driven along the guide rail 27 by the screw transmission principle, and the first template 21 and the second template 22 gradually approach the steel bar skeleton 31, and the hydraulic rod 24 is extended and retracted to drive the first template 21 and the second template 22 to rotate, and the position of the first template 21 and the second template 22 is fine-tuned, so that the first template 21 and the second template 22 are closed to each other; when the trolley 100 moves, the servo motor 28 is turned on, and the servo motor 28 drives the output shaft to rotate, and the output shaft changes the rotation speed through the transmission 42 to drive the roller 4 3 rotates, thereby pushing the base 1 and the prefabricated beam 3 to move. When the movement direction of the base 1 needs to be changed, the hydraulic oil pump 78 is turned on. When the hydraulic oil pump 78 is turned on, the hydraulic oil in the oil tank 77 enters the top of the adjusting cylinder 76 through one of the oil pipes 75, and the hydraulic oil in the bottom of the adjusting cylinder 76 enters the oil tank 77 again through another oil pipe 75, so that the piston 72 and the fixing rod 71 move downward, thereby lifting the base 1 upward, and the roller 43 is suspended; the servo motor 28 on the side wall of the first box body 51 is turned on, and the servo motor 28 drives the first gear 52 and the second gear 53 to rotate, and the diameter of the first gear 52 is smaller than the diameter of the second gear 53, so that the first gear 52 drives the second gear 53 to rotate more labor-saving, and the second gear 53 drives the support rod 41, the guard plate 44 and the roller 43 to rotate, changing the movement direction of the roller 43 and the base 1 (as shown in the attached figure). Figure 4As shown), when the roller 43 is in a suitable position, the hydraulic rod 24 is opened to push the tooth plate 58 to move, so that the tooth plate 58 engages with the second gear 53 to fix the position of the support rod 41 and the roller 53, and the hydraulic oil pump 78 is turned on. The fixing rod 71 contracts to lower the base 1, and the servo motor 58 on the side wall of the roller 53 can be opened; the trolley 100 moves to drive the base 1 and the template 2 into the concrete pouring area to pour concrete; after the pouring is completed, the trolley 100 moves to carry the precast beam 3 to the steam curing shed 104 for steam curing. After the steam curing is completed, the trolley 100 moves to the primary tensioning area 105 to remove the template. When the second template 22 is removed, the servo motor 28 is turned on to drive the screw 26 to rotate. Using the principle of screw transmission, the screw 26 drives the slide 58 to move toward the edge of the base 4, and the hydraulic rod 24 contracts. The second template 22 is driven to move toward the edge of the base 1, increasing the thrust of the second template 22 moving toward the edge, and at the same time, the hydraulic oil pump 78 is turned on to allow the hydraulic oil to enter the interior of the adjusting cylinder 71, so that the piston 72 and the fixing rod 71 move upward, pushing the slide plate 62, the compression rod 63 and the compression plate 64 to move slowly upward, and the compression plate 64 pushes the precast beam 3 to move upward. Since the bottom end side wall of the precast beam 3 is inclined, when the compression plate 64 pushes the precast beam 3 to move upward, the precast beam 3 tilts toward the direction of the edge line of the base 1 to squeeze the second template 22, so as to avoid excessive squeezing force between the precast beam 3 and the second template 22, which may cause damage to the precast beam 3. The screw rod 26 and the hydraulic rod 24 pull the second template 22 outward, and the precast beam 3 squeezes the second template 22 from the inside to the outside, so that the second template 22 is quickly separated from the precast beam 3 (as shown in the attached figure). Figure 5As shown), at the same time, the precast beam 3 moves upward and slides out of the second template 22 to prevent the flange plate of the precast beam 3 from being subjected to an upward external force and causing cracks at its root, and the compression plate 64 moves upward to make the bottom surface of the precast beam 3 separate from the base 1 first, to prevent the surface of the precast beam 3 from being damaged by excessive bonding between the bottom surface of the precast beam 3 and the base 1 during the lifting process; after the template is removed, the steel strands are bundled and prestress is applied for the first time; after the initial tensioning is completed, the screw rod 26 and the hydraulic rod 24 operate to rotate the second template 22, revealing a larger construction space on the surface of the base 1; after the initial tensioning is completed, the compression plate 64 lifts the precast beam 3 to facilitate the lifting of the precast beam 3. The sling 8 is wound around and fixed on the side wall of the precast beam 3, so as to facilitate the lifting of the precast beam 3. When lifting, the precast beam 3 is separated from the compression plate 64, so that the bottom surface of the precast beam 3 is separated from the base 1 and the compression plate 64 twice, respectively, to prevent the bonding force of the bottom surface of the precast beam 3 from being too large, reduce the resistance encountered by the precast beam 3 when lifting, and increase the stability and firmness of the precast beam 3 during the lifting process. The precast beam 3 is lifted to the curing and secondary tensioning area 106 by a crane, and the final tensioning, grouting and anchoring are carried out after natural curing. The cured precast beam 3 is lifted to the beam storage area 107 for storage, and the trolley 100 moves to the steel bar installation platform 102 to produce the next precast beam.

[0028] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A convection bridge prefabricated component production line, characterized in that: include: A trolley (100) and a ferry area (101); the ferry area (101) is located in the center area of ​​the assembly line, and a steel bar binding processing area (102), a concrete pouring area (103), a steam curing shed (104), a primary tensioning area (105), and a curing and secondary tensioning area (106) are located around the ferry area (101). A template rest area (1011) is arranged on one side of the ferry area (101), and a concrete mixing station (1031) is installed on one side of the concrete pouring area (103); a beam storage area (107) is arranged on one side of the curing and secondary tensioning area (106). During the production process, the trolley (100) is transferred to each workstation through the ferry area (101), and the processes of steel bar binding, template closing, concrete pouring, steam curing, demolding, pre-tensioning, outdoor curing and final tensioning are completed one by one, thereby realizing intensive prefabricated component assembly line production; The trolley (100) comprises a base (1), a template (2) for producing the precast beam (3) being mounted on the surface of the base (1), a plurality of sliding mechanisms (4) for driving the precast beam (3) to move being arranged at the bottom end of the base (1), and a steering mechanism (5) for changing the movement direction of the trolley (100) and the precast beam (3) being mounted on the surface of the sliding mechanism (4); A compression mechanism (6) is installed on the bottom surface of the base (1) for facilitating demoulding and hoisting. The compression mechanism (6) comprises a second box body (61). The second box body (61) is fixed to the bottom surface of the base (1). The interior of the second box body (61) is slidably connected to a slide plate (62) and a compression rod (63). Two ends of a plurality of compression rods (63) are respectively fixedly connected to the slide plate (62) and a compression plate (64). The compression plate (64) having a T-shaped side wall section is engaged with the interior of the base (1), and the compression plate (64) contacts the bottom surface of the precast beam (3). A sealing ring (66) is installed inside the base (1) to prevent slurry leakage. The interior of the sealing ring (66) is engaged with a card plate (65), and the card plate (65) is fixed to the bottom surface of the compression plate (64). An adjusting mechanism (7) for adjusting the height of the base (1) and the compression rod (63) is installed on the bottom surface of the base (1), and the adjusting mechanism (7) comprises a mounting rod (73). A plurality of mounting rods (73) are installed on the bottom surface of the second box body (61), and the mounting rods (73) are installed on the top surface of an adjusting cylinder (76). The insides of the adjusting cylinder (76) and the mounting rods (73) are slidably connected to a fixing rod (71). A piston (72) is installed at the center of a side wall of the fixing rod (71), and the piston (72) is slidably connected to the inside of the adjusting cylinder (76). Both ends of the fixing rod (71) are fixedly connected to a fixing seat (74), and the fixing seat (74) at the top end of the fixing rod (71) is slidably connected to the inside of the fixing rod (73).

2. The convection type bridge prefabricated component production line according to claim 1 is characterized in that: The template (2) comprises a first template (21) and a second template (22); the side wall of the precast beam (3) is installed with the first template (21) and the second template (22) which are spliced ​​to each other; the side walls of the first template (21) and the second template (22) are both installed with brackets (23); and the brackets (23) and the side walls of the slide seat (25) are rotatably connected to a hydraulic rod (24) for adjusting the position of the first template (21) and the second template (22).

3. The convection type bridge prefabricated component production line according to claim 2 is characterized in that: The template (2) further comprises guide rails (27), a plurality of guide rails (27) being mounted on the surface of the base (1), the interior of the guide rails (27) being slidably connected to the slide seat (25); a plurality of screw rods (26) are rotatably connected to the side wall of the base (1), and the screw rods (26) are threadedly connected to the slide seat (25).

4. The convection type bridge prefabricated component production line according to claim 3 is characterized in that: The sliding mechanism (4) comprises a support rod (41), a plurality of the support rods (41) are arranged on the bottom surface of the base (1), a guard plate (44) is installed at the bottom end of the support rod (41), the inside of the guard plate (44) is rotatably connected to a roller (43), and a transmission (42) is installed on the side wall of the guard plate (44).

5. The convection type bridge prefabricated component production line according to claim 4 is characterized in that: The steering mechanism (5) comprises a first box (51), a plurality of the first boxes (51) are mounted on the bottom surface of the base (1), the first box (51) is internally rotatably connected to a first gear (52) and a second gear (53) that mesh with each other, the side wall of the support rod (41) is fixedly connected to the second gear (53), the first box (51) is internally slidably connected to a toothed plate (58) for fixing the second gear (53), and the side wall of the first box (51) is installed with a hydraulic rod (24) for driving the toothed plate (58) to move; the top end of the support rod (41) is fixedly connected to a connecting sleeve (54) having a funnel shape at the top end, the connecting sleeve (54) is rotatably connected to the inside of a supporting sleeve (56), and the supporting sleeve (56) is fixed to the bottom surface of the base (1); a rubber pad (57) for increasing the rotation resistance of the support rod (41) is installed inside the supporting sleeve (56), and a limiting ring (55) for preventing the support rod (41) from moving upward is installed inside the supporting sleeve (56).

6. The convection type bridge prefabricated component production line according to claim 5 is characterized in that: A servo motor (28) is installed on the side wall of the base (1), the transmission (42) and the first housing (51), respectively; the servo motor (28) is connected to the screw rod (26) and the first gear (52); and the diameter of the first gear (52) is smaller than the diameter of the second gear (53).

7. The convection type bridge prefabricated component production line according to claim 2 is characterized in that: The adjusting mechanism (7) further comprises an oil tank (77), the oil tank (77) being mounted at the bottom end of the second box body (61), and a hydraulic oil pump (78) being mounted inside the oil tank (77); a plurality of oil pipes (75) are mounted on both sides of the adjusting cylinder (76) and the hydraulic rod (24), the oil pipes (75) on one side of the adjusting cylinder (76) and the hydraulic rod (24) being connected to the inside of the oil tank (77), and the oil pipes (75) on the other side of the adjusting cylinder (76) and the hydraulic rod (24) being connected to the hydraulic oil pump (78).

8. The convection type bridge prefabricated component production line according to claim 1 is characterized in that: The cross section of the sealing ring (66) is a trapezoidal structure, and the cross section of the side wall of the clamping plate (65) is a triangular structure.

9. The convection type bridge prefabricated component production line according to claim 1 is characterized in that: The compression plate (64) is located in the center of the base (1), and the shortest distance between adjacent compression plates (64) is smaller than the length of the compression plate (64).

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