Fabricated bridge large-diameter prefabricated pipe column preparation device

Abstract

The invention belongs to the technical field of prefabricated pipe column preparation, and particularly relates to an assembly type bridge large-diameter prefabricated pipe column preparation device which comprises a bearing base, a PLC console is arranged on one side of the bearing base, and the PLC console comprises a PLC arranged inside and a liquid crystal display screen arranged on the surface. According to the manufacturing device for the large-diameter prefabricated pipe column of the fabricated bridge, by arranging the PLC control table, the quantitative feeding mechanism, the centrifugal forming mechanism and the plugging mechanism, when the manufacturing device is used, a rotary unloader, a material distribution driving motor and a centrifugal driving motor are integrally controlled through the PLC, and full-process automation of concrete from quantitative conveying, spiral material distribution to centrifugal forming is achieved. The rotary discharger ensures that the feeding amount is constant by accurately controlling the number of turns of rotation, concrete is uniformly pushed in combination with a feeding spiral piece, the problem of segregation or cavities caused by traditional manual material distribution is effectively avoided, the compactness and forming consistency of a pipe column are remarkably improved, and meanwhile the labor cost and the operation error are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of precast concrete column preparation technology, and in particular to a device for preparing large-diameter precast concrete columns for assembled bridges. Background Technology

[0002] A tubular column is a thin-walled, circular hollow structure driven into the foundation to transfer the load and weight of the superstructure to the foundation.

[0003] In prefabricated bridge construction, large-diameter precast concrete columns are key load-bearing components, and their manufacturing quality directly affects the structural safety and service life of the bridge. Traditional precast concrete columns are mostly produced manually or using semi-automated equipment for concrete pouring and molding, which presents problems such as difficulty in controlling the accuracy of material feeding, uneven centrifugal compaction, and poor inner wall smoothness. Furthermore, existing equipment has limited functionality, and the processes of mold sealing, material placement, and leveling are poorly coordinated, relying heavily on manual intervention. This results in low production efficiency and poor product consistency, making it difficult to meet the high standards and mass production requirements of modern bridge engineering for large precast components.

[0004] Therefore, there is an urgent need to develop a dedicated preparation device with a high degree of integration and automation to achieve precise material distribution, efficient centrifugal molding, and fine treatment of the inner wall. Summary of the Invention

[0005] Based on existing technical problems, this invention proposes a device for preparing large-diameter precast pipe columns for assembled bridges.

[0006] The present invention proposes a prefabricated bridge large-diameter pipe column preparation device, including a load-bearing base. A PLC control console is provided on one side of the load-bearing base. The PLC control console includes an internal PLC controller and an LCD screen on the surface. A quantitative feeding mechanism and a centrifugal forming mechanism are respectively provided on the upper surface of the load-bearing base. A forming mold is provided on the surface of the centrifugal forming mechanism. A sealing mechanism is provided at one end of the load-bearing base.

[0007] The quantitative feeding mechanism is used to feed concrete into the mold.

[0008] Among them, the centrifugal molding mechanism is used to drive the centrifugal molding of concrete inside the molding die.

[0009] The sealing mechanism is used to seal the forming mold and assist in the centrifugal forming of the precast tubular column.

[0010] Preferably, the quantitative feeding mechanism includes fixed support bases, with load-bearing plates fixedly connected to the upper surfaces of the two fixed support bases, and the lower surfaces of the two fixed support bases fixedly connected to the upper surface of the load-bearing base.

[0011] A rotary unloader is fixedly installed on the upper surface of the load-bearing plate. The rotary unloader is driven by an unloading motor, which is electrically connected to the PLC controller inside the PLC console via a cable.

[0012] Preferably, a cloth hopper is fixedly connected to the lower surface of the load-bearing plate, the inner wall of the cloth hopper is fixedly connected to the discharge end of the rotary unloader, and a feed hopper is fixedly connected to the feed end of the rotary unloader.

[0013] One end of the fabric hopper is fixedly connected to a feed pipe, the surface of the feed pipe is fixedly connected to the surfaces of the two fixed support seats, a drive support frame is fixedly installed on the upper surface of the load-bearing base, one end of the feed pipe is fixedly connected to the surface of the drive support frame, a fabric drive motor is fixedly installed on the surface of the drive support frame away from the feed pipe, and the fabric drive motor is electrically connected to the PLC controller inside the PLC control console via a cable.

[0014] The output shaft of the fabric drive motor is fixedly connected to the feeding drive shaft via a coupling, and the surface of the feeding drive shaft is sleeved with the inner wall of the feed pipe.

[0015] Preferably, a positioning platform is fixedly connected to the surface of one of the fixed support bases, and the other end of the feed pipe passes through and extends to the inner wall of the positioning platform. A cloth pipe is rotatably connected to the surface of the positioning platform via a bearing, and the inner wall of the cloth pipe is slidably connected to the surface of the feed pipe.

[0016] One end of the feeding drive shaft extends to the inner wall of the fabric tube. A feeding spiral blade is fixedly sleeved on the surface of the feeding drive shaft. The surface of the feeding spiral blade is slidably connected to the inner wall of the feed tube and the inner wall of the fabric tube, respectively.

[0017] The surface of the positioning platform is rotatably connected to a front sealing cover via a bearing, and the surface of the front sealing cover is rotatably connected to the surface of the fabric tube via a bearing.

[0018] Preferably, the centrifugal forming mechanism includes a load-bearing drive roller, the surface of which is rotatably connected to the surface of the fixed support base via a bearing, and the two load-bearing drive rollers are symmetrically distributed about the axis of the fixed support base.

[0019] The surface of the fixed support base is rotatably connected to a forming limiting roller via a bearing. The two forming limiting rollers are symmetrically distributed around the axis of the fixed support base and correspond to the two load-bearing drive rollers.

[0020] Preferably, a positioning support is fixedly connected to the upper surface of the load-bearing base, and multiple positioning supports are evenly distributed on the upper surface of the load-bearing base. The surface of the positioning support is rotatably connected to the surface of the load-bearing drive roller through a bearing.

[0021] Two centrifugal drive motors, corresponding to the two load-bearing drive rollers, are fixedly mounted on the surface of one of the fixed support bases. Both centrifugal drive motors are electrically connected to the PLC controller inside the PLC console via cables.

[0022] The output shafts of the two centrifugal drive motors are respectively fixedly connected to one end of the two load-bearing drive rollers via couplings. Drive contact wheels are fixedly sleeved on the surface of the two load-bearing drive rollers. Multiple drive contact wheels are evenly distributed on the surface of the load-bearing drive rollers. The surface of the load-bearing drive rollers is slidably connected to the surface of the forming mold.

[0023] Preferably, the sealing mechanism includes a fixed base plate, which is disposed at one end of the load-bearing base. A guide rail is fixedly connected to the upper surface of the fixed base plate. Two guide rails are symmetrically distributed about the axis of the fixed base plate. A sealing slide is slidably connected to the surface of the guide rail.

[0024] A drive hydraulic cylinder is fixedly installed on the upper surface of the fixed base plate. The three drive hydraulic cylinders are evenly distributed on the upper surface of the fixed base plate. The drive hydraulic cylinders are electrically connected to the PLC controller inside the PLC console through a solenoid valve. One end of the hydraulic rod of the drive hydraulic cylinder is fixedly connected to the surface of the sealing slide.

[0025] Preferably, a drive mounting base is fixedly connected to the upper surface of the sealing slide, and sealing hydraulic cylinders are fixedly installed on both sides of the drive mounting base. The sealing hydraulic cylinders are electrically connected to the PLC controller inside the PLC control console through solenoid valves, and a movable base is fixedly connected to one end of the hydraulic rod of the sealing hydraulic cylinder.

[0026] The lower surface of the movable base is fixedly mounted with movable support wheels. Two movable support wheels are symmetrically distributed with the axis of the movable base as the center. The surface of the drive mounting base is fixedly connected with guide posts. Four guide posts are located at the four corners of the drive mounting base. The surface of the guide posts is slidably connected to the surface of the movable base.

[0027] Preferably, a rear end sealing cover is rotatably connected to the surface of the movable seat via a bearing. Mounting holes are provided on the surface of the rear end sealing cover, the surface of the movable seat, and the surface of the drive mounting seat. Ceramic balls are rotatably connected to the inner wall of the mounting holes, and a plurality of ceramic balls are arranged in a ring array with the axis of the mounting holes as the center.

[0028] A drive tube is fitted into the inner wall of the mounting hole. The surface of the drive tube is slidably connected to the surface of the ceramic ball. A spline ring is fixedly connected to one end of the drive tube. A spline groove adapted to the surface of the spline ring is opened on the inner wall of the fabric tube. The surface of the spline ring is inserted into the inner wall of the spline groove.

[0029] Multiple evenly distributed discharge slots are fixedly formed on the surface of the drive tube and the surface of the cloth tube. A receiving slot is formed on the surface of the drive tube and the cloth tube. The four receiving slots are symmetrically distributed with the axis of the drive tube and the cloth tube as the center. An arc-shaped wiping plate is rotatably connected to the inner wall of the receiving slot through a functional shaft. Torsion springs are sleeved on both ends of the functional shaft. One end of the torsion spring is fixedly connected to the surface of the arc-shaped wiping plate, and the other end of the torsion spring is fixedly connected to the inner wall of the receiving slot.

[0030] Preferably, a sealing disc for sealing is fixedly connected to the inner wall of the drive tube, a driven gear is fixedly sleeved on the surface of the drive tube, a material-applying drive motor is fixedly mounted on the surface of the drive mounting base through a motor mounting slot, the material-applying drive motor is electrically connected to the PLC controller inside the PLC control console through a cable, and a drive gear is fixedly mounted on the output shaft of the material-applying drive motor through a key and a keyway, the surface of the drive gear meshing with the surface of the driven gear.

[0031] A limit hydraulic cylinder is fixedly installed on the surface of the drive mounting base near the movable base. The two limit hydraulic cylinders are symmetrically distributed with the axis of the drive mounting base as the center. The limit hydraulic cylinder is electrically connected to the PLC controller inside the PLC control console through a solenoid valve. One end of the hydraulic rod of the limit hydraulic cylinder is fixedly connected to a limit frame.

[0032] The surface of the drive mounting base has two limiting guide grooves corresponding to the two limiting frames. The surface of the limiting frame is slidably connected to the inner wall of the limiting guide groove. The inner wall of the limiting frame is rotatably connected to a limiting wheel via a pin. The surface of the drive tube has an annular positioning groove. The surface of the limiting wheel is slidably connected to the inner wall of the annular positioning groove.

[0033] The beneficial effects of this invention are as follows: 1. By setting up a PLC control console, a quantitative feeding mechanism, a centrifugal molding mechanism, and a sealing mechanism, the PLC controller integrates and controls the rotary unloader, the feeding drive motor, and the centrifugal drive motor, achieving full automation of the concrete process from quantitative conveying and spiral feeding to centrifugal molding. The rotary unloader ensures a constant feed rate by precisely controlling the number of rotations, and combined with the feeding spiral blades to evenly propel the concrete, effectively avoiding segregation or cavity problems caused by traditional manual feeding, significantly improving the compactness and molding consistency of the concrete column, while greatly reducing labor costs and operational errors.

[0034] 2. By setting up a PLC control console, a quantitative feeding mechanism, and a centrifugal molding mechanism, the system employs a bidirectional rotation design during operation. A centrifugal drive motor drives the mold to rotate at high speed, achieving concrete compaction. Simultaneously, a material-applying drive motor, through the cooperation of a drive gear and a driven gear, drives the material-applying pipe to rotate at low speed in the opposite direction to the drive pipe. Under centrifugal force, the arc-shaped material-applying plate automatically unfolds and applies material to and smooths the inner wall of the pipe column. This dual action effectively eliminates air bubbles and unevenness on the inner wall, significantly improving the smoothness and structural uniformity of the inner wall, overcoming the drawbacks of traditional processes that result in rough inner walls and require secondary repairs.

[0035] 3. By incorporating a sealing mechanism, during operation, the sealing mechanism, driven by a hydraulic system, activates the rear sealing cap and limit wheel, achieving rapid sealing of the molding die and precise positioning of the drive tube. The spline ring and spline groove insertion design ensures synchronous rotation of the drive tube and the material placing tube while allowing axial displacement, and the guide column and movable support wheel guarantee motion stability. This modular structure adapts to molds of different specifications, significantly reducing assembly and disassembly time, enhancing the equipment's flexible production capabilities, and providing an efficient solution for mass production of multi-specification tubes. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 2 This is a three-dimensional view of the PLC control console structure of the prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 3 This is a three-dimensional view of the load-bearing base structure of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 4 This invention proposes a prefabricated bridge large-diameter precast pipe pile preparation device. Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a perspective view of the fixed base plate structure of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 6This is a perspective view of the drive mounting base structure of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention. Figure 7 This is a three-dimensional view of the sealing slide structure of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 8 This is a perspective view of the driven gear structure of a prefabricated bridge large-diameter pipe column preparation device proposed in this invention; Figure 9 This invention proposes a prefabricated bridge large-diameter precast pipe pile preparation device. Figure 8 Enlarged view of the structure at point B in the middle.

[0037] In the diagram: 1. Load-bearing base; 2. PLC control console; 3. Fixed support base; 301. Load-bearing plate; 302. Rotary unloader; 303. Unloader motor; 304. Cloth hopper; 305. Feed hopper; 306. Feed pipe; 307. Drive support frame; 308. Cloth drive motor; 309. Feed drive shaft; 310. Positioning table; 311. Cloth pipe; 312. Feed auger; 313. Front sealing cover; 4. Load-bearing drive roller; 401. Positioning support base; 402. Centrifugal drive motor; 403. Drive contact wheel; 5. Fixed base plate; 501. Guide rail; 502. 503. Sealing slide; 504. Drive hydraulic cylinder; 505. Drive mounting base; 506. Ceramic ball bearing; 507. Sealing hydraulic cylinder; 508. Moving base; 509. Moving support wheel; 510. Guide column; 511. Rear end sealing cover; 512. Drive tube; 513. Spline ring; 514. Spline groove; 515. Discharge chute; 516. Collection chute; 517. Arc-shaped wiping plate; 518. Sealing disc; 519. Driven gear; 520. Wiping drive motor; 521. Drive gear; 522. Limiting hydraulic cylinder; 523. Limiting frame; 524. Limiting wheel; 525. Annular positioning groove. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Reference Figures 1-9 A prefabricated bridge large-diameter pipe column preparation device includes a load-bearing base 1, a PLC control console 2 is provided on one side of the load-bearing base 1, the PLC control console 2 includes a PLC controller inside and an LCD screen on the surface, a quantitative feeding mechanism and a centrifugal forming mechanism are respectively provided on the upper surface of the load-bearing base 1, a forming mold is provided on the surface of the centrifugal forming mechanism, and a sealing mechanism is provided at one end of the load-bearing base 1.

[0040] Furthermore, the PLC console 2 is the PLC console 2 known on the market. Its core is the PLC controller, which is a programmable logic controller. It is a general-purpose industrial automatic control device developed with microprocessor as the core and integrating computer technology, automatic control technology and communication technology. It uses programmable memory as the internal instruction memory device and has functions such as logic, sorting, timing, counting and arithmetic operations. Therefore, its internal structure and wiring diagram are known and do not need to be described in detail.

[0041] The quantitative feeding mechanism is used to feed concrete into the mold.

[0042] The quantitative feeding mechanism includes fixed support bases 3, with load-bearing plates 301 fixedly connected to the upper surfaces of the two fixed support bases 3, and the lower surfaces of the two fixed support bases 3 fixedly connected to the upper surfaces of the load-bearing base 1.

[0043] A rotary unloader 302 is fixedly installed on the upper surface of the load-bearing plate 301. The rotary unloader 302 is driven by an unloading motor 303, which is electrically connected to the PLC controller inside the PLC control console 2 via a cable.

[0044] In use, the unloading motor 303 is driven and controlled by the PLC control console 2, thereby realizing the unloading control of the rotary unloader 302.

[0045] The electric unloader, also known as the rotary unloader 302, consists of a rotor impeller with several blades, a housing, seals, a reducer, and a motor. It features reliable and stable operation, low noise, few malfunctions, and long service life. Made of ductile iron and bearing steel, it has advantages such as good performance and high wear resistance. As an advanced unloading equipment, the electric unloader plays a significant role in industries such as dust removal, metallurgy, building materials, chemicals, and food.

[0046] During use, the volume between the rotor impeller of the rotary unloader 302 and the housing is fixed. The number of rotations of the unloading motor 303 is controlled by the PLC controller to achieve quantitative feeding of concrete for the production of precast pipe columns.

[0047] Furthermore, in order to achieve better and more precise control of the unloading amount of the rotary unloader 302, a rotary encoder is fixedly installed on the surface of the rotary unloader 302 and electrically connected to the PLC controller via a cable. The rotary encoder is connected to the rotor impeller of the rotary unloader 302 to monitor the number of rotations of the rotor impeller and feed the information back to the PLC controller, thereby achieving a better quantitative material distribution effect.

[0048] A material hopper 304 is fixedly connected to the lower surface of the load-bearing plate 301. The inner wall of the material hopper 304 is fixedly connected to the discharge end of the rotary unloader 302. A feed hopper 305 is fixedly connected to the feed end of the rotary unloader 302.

[0049] In use, concrete material enters the rotary unloader 302 through the feed hopper 305, and the rotary unloader 302 quantitatively feeds the concrete material into the distribution hopper 304 to achieve quantitative material distribution.

[0050] One end of the fabric hopper 304 is fixedly connected to the feed pipe 306. The surface of the feed pipe 306 is fixedly connected to the surfaces of the two fixed support seats 3. The upper surface of the load-bearing base 1 is fixedly installed with the drive support frame 307. One end of the feed pipe 306 is fixedly connected to the surface of the drive support frame 307. The surface of the drive support frame 307 away from the feed pipe 306 is fixedly installed with the fabric drive motor 308. The fabric drive motor 308 is electrically connected to the PLC controller inside the PLC control console 2 through a cable.

[0051] During use, the fabric drive motor 308 is automatically controlled by the PLC controller.

[0052] The output shaft of the fabric drive motor 308 is fixedly connected to the feeding drive shaft 309 via a coupling, and the surface of the feeding drive shaft 309 is sleeved with the inner wall of the feed pipe 306.

[0053] One of the fixed support bases 3 has a positioning platform 310 fixedly connected to its surface. The other end of the feed pipe 306 passes through and extends to the inner wall of the positioning platform 310. The surface of the positioning platform 310 is rotatably connected to the feeding pipe 311 via a bearing. The inner wall of the feeding pipe 311 is slidably connected to the surface of the feed pipe 306.

[0054] In use, the concrete distribution pipe 311 is slidably connected to the feed pipe 306, which facilitates the concrete inside the feed pipe 306 to enter the distribution pipe 311 to achieve quantitative distribution.

[0055] One end of the feeding drive shaft 309 extends to the inner wall of the feeding tube 311. A feeding spiral blade 312 is fixedly sleeved on the surface of the feeding drive shaft 309. The surface of the feeding spiral blade 312 is slidably connected to the inner wall of the feed tube 306 and the inner wall of the feeding tube 311, respectively.

[0056] In use, the feeding motor drives the feeding drive shaft 309 to rotate, and the feeding drive shaft 309 drives the feeding spiral blade 312 to rotate, so as to transport the concrete material from the feeding hopper 305 into the molding mold for column forming.

[0057] The surface of the positioning table 310 is rotatably connected to the front sealing cover 313 via a bearing, and the surface of the front sealing cover 313 is rotatably connected to the surface of the cloth tube 311 via a bearing.

[0058] In use, the front sealing cover 313 is rotatably connected to the cloth tube 311 and the positioning table 310, so that the front sealing cover 313 can rotate with the forming mold during the centrifugal forming process of the tube column, thereby achieving the effect of sealing the forming mold.

[0059] Among them, the centrifugal molding mechanism is used to drive the centrifugal molding of concrete inside the molding die.

[0060] The centrifugal forming mechanism includes a load-bearing drive roller 4. The surface of the load-bearing drive roller 4 is rotatably connected to the surface of the fixed support 3 through a bearing. The two load-bearing drive rollers 4 are symmetrically distributed with the axis of the fixed support 3 as the center.

[0061] The surface of the fixed support base 3 is rotatably connected to the forming limit rollers via bearings. The two forming limit rollers are symmetrically distributed with the axis of the fixed support base 3 as the center, and correspond to the two load-bearing drive rollers 4.

[0062] A positioning support seat 401 is fixedly connected to the upper surface of the load-bearing base 1. Multiple positioning support seats 401 are evenly distributed on the upper surface of the load-bearing base 1. The surface of the positioning support seat 401 is rotatably connected to the surface of the load-bearing drive roller 4 through a bearing.

[0063] Two centrifugal drive motors 402, corresponding to the two load-bearing drive rollers 4, are fixedly mounted on the surface of one of the fixed support bases 3. Both centrifugal drive motors 402 are electrically connected to the PLC controller inside the PLC control console 2 via cables.

[0064] During use, the two centrifugal drive motors 402 are automatically controlled by the PLC controller inside the PLC console 2.

[0065] The output shafts of the two centrifugal drive motors 402 are fixedly connected to one end of the two load-bearing drive rollers 4 via couplings. Drive contact wheels 403 are fixedly sleeved on the surface of the two load-bearing drive rollers 4. Multiple drive contact wheels 403 are evenly distributed on the surface of the load-bearing drive rollers 4. The surface of the load-bearing drive rollers 4 is slidably connected to the surface of the forming mold.

[0066] In use, two centrifugal drive motors 402 drive two load-bearing drive rollers 4 to rotate, which in turn drives the forming mold to rotate, thus centrifugally forming the tube column.

[0067] The sealing mechanism is used to seal the forming mold and assist in the centrifugal forming of the precast tubular column.

[0068] The sealing mechanism includes a fixed base plate 5, which is set at one end of the load-bearing base 1. A guide slide rail 501 is fixedly connected to the upper surface of the fixed base plate 5. The two guide slide rails 501 are symmetrically distributed with the axis of the fixed base plate 5 as the center. A sealing slide table 502 is slidably connected to the surface of the guide slide rail 501.

[0069] A drive hydraulic cylinder 503 is fixedly installed on the upper surface of the fixed base plate 5. The three drive hydraulic cylinders 503 are evenly distributed on the upper surface of the fixed base plate 5. The drive hydraulic cylinders 503 are electrically connected to the PLC controller inside the PLC control console 2 through solenoid valves. One end of the hydraulic rod of the drive hydraulic cylinder 503 is fixedly connected to the surface of the sealing slide 502.

[0070] Furthermore, the drive hydraulic cylinder 503 is electrically connected to the PLC controller via a solenoid valve, and is also connected to the hydraulic pump station via the solenoid valve and hydraulic oil pipe. The hydraulic pump station is electrically connected to the PLC controller via a cable, thus facilitating automatic control of the hydraulic pump station's operation by the PLC controller, and controlling the operation of the drive hydraulic cylinder 503 by opening or closing the solenoid valve. The hydraulic rod inside the drive hydraulic cylinder 503 extends and retracts, causing the sealing slide 502 to move.

[0071] A drive mounting base 504 is fixedly connected to the upper surface of the blocking slide 502. A blocking hydraulic cylinder 505 is fixedly installed on both sides of the drive mounting base 504. The blocking hydraulic cylinder 505 is electrically connected to the PLC controller inside the PLC control console 2 through a solenoid valve. A movable base 506 is fixedly connected to one end of the hydraulic rod of the blocking hydraulic cylinder 505.

[0072] Furthermore, the sealing hydraulic cylinder 505 is electrically connected to the PLC controller via a solenoid valve, and is also connected to the hydraulic pump station via the solenoid valve and hydraulic oil pipe. The hydraulic pump station is electrically connected to the PLC controller via a cable, thus facilitating automatic control of the hydraulic pump station's operation by the PLC controller, and controlling the operation of the sealing hydraulic cylinder 505 by opening or closing the solenoid valve. The extension and retraction of the hydraulic rod inside the sealing hydraulic cylinder 505 drives the moving seat 506 to move.

[0073] The lower surface of the movable seat 506 is fixedly equipped with movable support wheels 507, and the two movable support wheels 507 are symmetrically distributed about the axis of the movable seat 506.

[0074] Guide posts 508 are fixedly connected to the surface of the drive mounting base 504. The four guide posts 508 are located at the four corners of the drive mounting base 504, and the surface of the guide posts 508 is slidably connected to the surface of the movable base 506.

[0075] In use, the guide column 508 and the movable support wheel 507 work together to guide, support and limit the movement of the movable seat 506.

[0076] The surface of the movable seat 506 is rotatably connected to the rear sealing cover 509 via a bearing. The surfaces of the rear sealing cover 509, the movable seat 506, and the drive mounting seat 504 are all provided with mounting holes. The inner walls of the mounting holes are rotatably connected to ceramic balls 5041. Multiple ceramic balls 5041 are arranged in a ring array with the axis of the mounting hole as the center.

[0077] A drive tube 510 is fitted into the inner wall of the mounting hole. The surface of the drive tube 510 is slidably connected to the surface of the ceramic ball 5041. A spline ring 511 is fixedly connected to one end of the drive tube 510. A spline groove 512 adapted to the surface of the spline ring 511 is opened on the inner wall of the fabric tube 311. The surface of the spline ring 511 is inserted into the inner wall of the spline groove 512.

[0078] In use, the drive tube 510, through the cooperation of the spline ring 511 and the spline groove 512, drives the fabric tube 311 to rotate.

[0079] Multiple evenly distributed discharge slots 513 are fixedly opened on the surface of the drive tube 510 and the surface of the distribution tube 311. A collection slot 514 is opened on the surface of the drive tube 510 and the distribution tube 311. The four collection slots 514 are symmetrically distributed with the axis of the drive tube 510 and the distribution tube 311 as the center. An arc-shaped wiping plate 515 is rotatably connected to the inner wall of the collection slot 514 through a functional shaft. Torsion springs are sleeved on both ends of the functional shaft. One end of the torsion spring is fixedly connected to the surface of the arc-shaped wiping plate 515, and the other end of the torsion spring is fixedly connected to the inner wall of the collection slot 514.

[0080] During use, the drive tube 510 drives the cloth tube 311 to rotate. Under the action of centrifugal force, the arc-shaped troweling plate 515 separates from the receiving groove 514, troweling the inner wall of the centrifugally formed tube column to improve the smoothness of the inner wall. When the drive tube 510 stops rotating, the arc-shaped troweling plate 515 is stored in the receiving groove 514 under the action of the torsion spring. In actual operation, depending on the length of the produced tube column, multiple troweling plates are opened on the surface of the arc-shaped troweling plate 515 when forming longer tube columns. The spring groove uses multiple torsion springs to ensure that the arc-shaped troweling plate 515 can be stored in the storage groove 514 after the centrifugal force is lost. Specifically, the torsion spring is sleeved with the functional shaft in the spring groove opened on the surface of the arc-shaped troweling plate 515. One end of the torsion spring is fixedly connected to the inner wall of the spring groove, and the other end of the torsion spring is fixedly connected to the inner wall of the storage groove 514. This achieves better centrifugal throwing and shaping smoothing effects and prevents the arc-shaped troweling plate 515 from damaging the inner wall of the column after the centrifugal force is lost.

[0081] A sealing disc 516 for sealing is fixedly connected to the inner wall of the drive tube 510. A driven gear 517 is fixedly sleeved on the surface of the drive tube 510. A troweling drive motor 518 is fixedly mounted on the surface of the drive mounting base 504 through the motor mounting slot. The troweling drive motor 518 is electrically connected to the PLC controller inside the PLC control console 2 through a cable.

[0082] During use, the working time and speed of the material-spreading drive motor 518 are automatically controlled by the program preset by the PLC controller, thereby improving the smoothness of the inner wall of the formed column.

[0083] The output shaft of the material-driving motor 518 is fixedly mounted with a drive gear 519 via a key and keyway, and the surface of the drive gear 519 meshes with the surface of the driven gear 517.

[0084] A limit hydraulic cylinder 520 is fixedly installed on the side surface of the drive mounting base 504 near the movable base 506. The two limit hydraulic cylinders 520 are symmetrically distributed with the axis of the drive mounting base 504 as the center. The limit hydraulic cylinder 520 is electrically connected to the PLC controller inside the PLC control console 2 through a solenoid valve. One end of the hydraulic rod of the limit hydraulic cylinder 520 is fixedly connected to the limit frame 521.

[0085] Furthermore, the limit hydraulic cylinder 520 is electrically connected to the PLC controller via a solenoid valve, and is also connected to the hydraulic pump station via a solenoid valve and hydraulic oil pipe. The hydraulic pump station is electrically connected to the PLC controller via a cable, thereby facilitating automatic control of the hydraulic pump station's operation by the PLC controller, and controlling the operation of the limit hydraulic cylinder 520 by opening or closing the solenoid valve. The hydraulic rod inside the limit hydraulic cylinder 520 extends and retracts, driving the limit frame 521 to move.

[0086] The surface of the drive mounting base 504 has two limit guide grooves corresponding to the two limit brackets 521. The surface of the limit bracket 521 is slidably connected to the inner wall of the limit guide groove. The inner wall of the limit bracket 521 is rotatably connected to the limit wheel 522 through a pin.

[0087] The surface of the drive tube 510 is provided with an annular positioning groove 523, and the surface of the limiting wheel 522 is slidably connected to the inner wall of the annular positioning groove 523.

[0088] In use, the limiting hydraulic cylinder 520 drives the limiting frame 521 and the limiting wheel 522 to move. The limiting wheel 522 is inserted into the inner wall of the annular positioning groove 523 to limit the rotation of the drive tube 510.

[0089] By incorporating a sealing mechanism, during operation, the sealing mechanism drives the rear sealing cap 509 and the limiting wheel 522 via a hydraulic system, achieving rapid sealing of the molding die and precise positioning of the drive tube 510. The insertion design of the spline ring 511 and spline groove 512 ensures that the drive tube 510 and the material distribution tube 311 rotate synchronously while allowing axial displacement, and the guide column 508 and the movable support wheel 507 ensure motion stability. This modular structure is adaptable to molds of different specifications, significantly shortening assembly and disassembly time, enhancing the equipment's flexible production capacity, and providing an efficient solution for batch production of multi-specification tubes.

[0090] By setting up a PLC control console 2, a quantitative feeding mechanism, and a centrifugal molding mechanism, a bidirectional rotation design is adopted during use. The centrifugal drive motor 402 drives the mold to rotate at high speed to achieve concrete compaction. At the same time, the material spreading drive motor 518, through the cooperation of the drive gear 519 and the driven gear 517, drives the material spreading tube 311 to rotate at low speed in the opposite direction to the drive tube 510. Under the action of centrifugal force, the arc-shaped material spreading plate 515 automatically unfolds and throws and smooths the inner wall of the tube column. The dual action effectively eliminates air bubbles and uneven defects on the inner wall, significantly improves the smoothness of the inner wall and the uniformity of the structure, and overcomes the drawbacks of the traditional process of rough inner wall and the need for secondary repair.

[0091] By setting up a PLC control console 2, a quantitative feeding mechanism, a centrifugal molding mechanism, and a sealing mechanism, the PLC controller integrates and controls the rotary unloader 302, the material distribution drive motor 308, and the centrifugal drive motor 402 during operation, achieving full automation of the concrete process from quantitative conveying and spiral distribution to centrifugal molding. The rotary unloader 302 ensures a constant feed rate by precisely controlling the number of rotations, and combined with the feeding spiral blades 312 to uniformly propel the concrete, effectively avoiding segregation or cavity problems caused by traditional manual distribution, significantly improving the compactness and molding consistency of the concrete column, while greatly reducing labor costs and operational errors.

[0092] Working principle: During the tubular column forming process, the PLC control program inside the PLC console 2 is first set. Then, the hydraulic rod on the limit hydraulic cylinder 520 is retracted through the PLC console 2, driving the limit frame 521 and the limit wheel 522 to move, causing the limit wheel 522 to separate from the inner wall of the annular positioning groove 523. Then, the drive tube 510 is pulled, causing one end of the drive tube 510 to separate from one end of the material distribution tube 311, causing the spline ring 511 to separate from the spline groove 512. Then, the drive hydraulic cylinder 503 is controlled by the PLC console 2 to work, causing the hydraulic rod on the drive hydraulic cylinder 503 to retract, driving the sealing slide 502 to move, causing the sealing slide 502 to be misaligned with the load-bearing base 1. Then, the forming mold is inserted through one end of the sealing slide 502 and fitted with the material distribution tube 311. The mold is then connected to the drive contact wheel 403, and one end of the mold is inserted into the front sealing cover 313 for sealing. Then, the drive hydraulic cylinder 503 is controlled to work again by the PLC control console 2. The hydraulic rod inside the drive hydraulic cylinder 503 extends, driving the sealing slide 502 to reset. Then, the drive tube 510 is inserted into the mold, and the spline ring 511 at one end of the drive tube 510 is inserted into the spline groove 512 in the cloth tube 311. Then, the limit hydraulic cylinder 520 is controlled to work by the PLC control console 2. The hydraulic rod inside the limit hydraulic cylinder 520 extends, driving the limit frame 521 and the limit wheel 522 to move along the inner wall of the limit guide groove, so that the surface of the limit wheel 522 is inserted into the inner wall of the annular positioning groove 523 to limit and position the drive tube 510.

[0093] Then, the sealing hydraulic cylinder 505 is controlled by the PLC control console 2. The hydraulic rod inside the sealing hydraulic cylinder 505 extends out, driving the moving seat 506 to move, so that the rear sealing cover 509 is inserted and sealed with the end face of the forming mold.

[0094] Then, concrete material is fed into the feed hopper 305, and the automatic control program of PLC console 2 is started. PLC console 2 automatically controls the rotary unloader 302 to work through the PLC controller, quantitatively inputting the concrete material in the feed hopper 305 into the distribution hopper 304, and then into the feed pipe 306 through the distribution hopper 304. The distribution drive motor 308 is automatically controlled by the PLC controller to work. The output shaft of the distribution drive motor 308 drives the feeding drive shaft 309 to rotate through the coupling, which drives the feeding spiral blade 312 to spirally extrude the concrete material into the distribution pipe 311 and the drive pipe 510, and discharges it through the discharge trough 513 opened on the distribution pipe 311 and the drive pipe 510. At the same time, the PLC controller controls the two centrifugal drive motors 402 to work. The output shafts of the two centrifugal drive motors 402 drive the two load-bearing drive rollers 4 to rotate through the coupling, which drives the forming mold to rotate, and perform centrifugal forming while distributing the material.

[0095] At the same time, the PLC controller also synchronously controls the operation of the material spreading drive motor 518. The output shaft of the material spreading drive motor 518 drives the drive gear 519 to rotate, the drive gear 519 drives the driven gear 517 to rotate, the driven gear 517 drives the drive tube 510 to rotate, and the drive tube 510 drives the material spreading tube 311 to rotate. During the rotation process, the drive tube 510 and the material spreading tube 311 rotate in the opposite direction to the rotation of the molding die.

[0096] As the material distribution pipe 311 and drive pipe 510 rotate, the arc-shaped trowel plate 515 opens under centrifugal force, throwing out concrete material to contact the forming mold, thereby increasing the density of the pipe column. After the material distribution is completed, during the forming process of the pipe column, the arc-shaped trowel plate 515 contacts the inner wall of the pipe column to smooth the inner wall of the pipe column, thereby increasing the smoothness of the inner wall of the pipe column.

[0097] After the tubing is formed, the limit hydraulic cylinder 520, the sealing hydraulic cylinder 505 and the drive hydraulic cylinder 503 are controlled again by the PLC control console 2 to pull the drive tube 510 out of the tubing. Then, the rear sealing cover 509 is separated from the forming mold, and the sealing slide 502 is misaligned with the load-bearing base 1 by the drive hydraulic cylinder 503. Finally, the forming mold and tubing are hoisted or transported away from the load-bearing base 1 by hoisting or conveying equipment and transferred to the steam curing process.

[0098] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated pipe column manufacturing device for large diameter precast bridges, comprising a load-bearing base (1), characterized in that: A PLC control console (2) is provided on one side of the load-bearing base (1). A quantitative feeding mechanism and a centrifugal forming mechanism are respectively provided on the upper surface of the load-bearing base (1). A forming mold is provided on the surface of the centrifugal forming mechanism. A sealing mechanism is provided at one end of the load-bearing base (1). The quantitative feeding mechanism is used to feed concrete into the mold. Among them, the centrifugal molding mechanism is used to drive the centrifugal molding of concrete inside the molding die; The sealing mechanism is used to seal the forming mold and assist in the centrifugal forming of the precast tubular column.

2. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 1, characterized in that: The quantitative feeding mechanism includes a fixed support base (3), and a load-bearing plate (301) is fixedly connected to the upper surface of each of the two fixed support bases (3). The lower surface of the two fixed support bases (3) is fixedly connected to the upper surface of the load-bearing base (1). A rotary unloader (302) is fixedly installed on the upper surface of the load-bearing plate (301). The rotary unloader (302) is driven by an unloading motor (303). The unloading motor (303) is electrically connected to the PLC controller inside the PLC console (2) via a cable.

3. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 2, characterized in that: The lower surface of the load-bearing plate (301) is fixedly connected to a cloth hopper (304), the inner wall of the cloth hopper (304) is fixedly connected to the discharge end of the rotary unloader (302), and the feed end of the rotary unloader (302) is fixedly connected to a feed hopper (305). One end of the fabric hopper (304) is fixedly connected to the feed pipe (306), the surface of the feed pipe (306) is fixedly connected to the surfaces of the two fixed support seats (3), the upper surface of the load-bearing base (1) is fixedly installed with a drive support frame (307), one end of the feed pipe (306) is fixedly connected to the surface of the drive support frame (307), and the surface of the drive support frame (307) away from the feed pipe (306) is fixedly installed with a fabric drive motor (308), and the fabric drive motor (308) is electrically connected to the PLC controller inside the PLC control console (2) through a cable; The output shaft of the fabric drive motor (308) is fixedly connected to the feeding drive shaft (309) via a coupling, and the surface of the feeding drive shaft (309) is sleeved with the inner wall of the feed pipe (306).

4. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 3, characterized in that: One of the fixed support bases (3) is fixedly connected to a positioning platform (310), and the other end of the feed pipe (306) extends through and to the inner wall of the positioning platform (310). The surface of the positioning platform (310) is rotatably connected to a feeding pipe (311) via a bearing, and the inner wall of the feeding pipe (311) is slidably connected to the surface of the feed pipe (306). One end of the feeding drive shaft (309) extends to the inner wall of the feeding tube (311), and a feeding spiral blade (312) is fixedly sleeved on the surface of the feeding drive shaft (309). The surface of the feeding spiral blade (312) is slidably connected to the inner wall of the feed tube (306) and the inner wall of the feeding tube (311). The surface of the positioning platform (310) is rotatably connected to the front sealing cover (313) via a bearing, and the surface of the front sealing cover (313) is rotatably connected to the surface of the fabric tube (311) via a bearing.

5. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 4, characterized in that: The centrifugal forming mechanism includes a load-bearing drive roller (4), the surface of which is rotatably connected to the surface of the fixed support base (3) via a bearing, and the two load-bearing drive rollers (4) are symmetrically distributed with the axis of the fixed support base (3) as the center. The surface of the fixed support base (3) is rotatably connected to the forming limiting rollers via bearings. The two forming limiting rollers are symmetrically distributed with the axis of the fixed support base (3) as the center, corresponding to the two load-bearing drive rollers (4).

6. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 5, characterized in that: The upper surface of the load-bearing base (1) is fixedly connected to a positioning support (401), and multiple positioning supports (401) are evenly distributed on the upper surface of the load-bearing base (1). The surface of the positioning support (401) is rotatably connected to the surface of the load-bearing drive roller (4) through a bearing. Two centrifugal drive motors (402) corresponding to the two load-bearing drive rollers (4) are fixedly installed on the surface of one of the fixed support bases (3). Both centrifugal drive motors (402) are electrically connected to the PLC controller inside the PLC console (2) through cables. The output shafts of the two centrifugal drive motors (402) are respectively fixedly connected to one end of the two load-bearing drive rollers (4) through couplings. Drive contact wheels (403) are fixedly sleeved on the surface of the two load-bearing drive rollers (4). Multiple drive contact wheels (403) are evenly distributed on the surface of the load-bearing drive rollers (4). The surface of the load-bearing drive rollers (4) is slidably connected to the surface of the forming mold.

7. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 6, characterized in that: The sealing mechanism includes a fixed base plate (5), which is disposed at one end of the load-bearing base (1). A guide slide rail (501) is fixedly connected to the upper surface of the fixed base plate (5). The two guide slide rails (501) are symmetrically distributed with the axis of the fixed base plate (5) as the center. A sealing slide table (502) is slidably connected to the surface of the guide slide rail (501). A driving hydraulic cylinder (503) is fixedly installed on the upper surface of the fixed base plate (5). The three driving hydraulic cylinders (503) are evenly distributed on the upper surface of the fixed base plate (5). The driving hydraulic cylinder (503) is electrically connected to the PLC controller inside the PLC control console (2) through a solenoid valve. One end of the hydraulic rod of the driving hydraulic cylinder (503) is fixedly connected to the surface of the sealing slide (502).

8. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 7, characterized in that: The upper surface of the sealing slide (502) is fixedly connected to a drive mounting base (504), and both sides of the drive mounting base (504) are fixedly mounted with sealing hydraulic cylinders (505). The sealing hydraulic cylinders (505) are electrically connected to the PLC controller inside the PLC control console (2) through a solenoid valve. One end of the hydraulic rod of the sealing hydraulic cylinder (505) is fixedly connected to a movable base (506). The lower surface of the movable seat (506) is fixedly mounted with movable support wheels (507). The two movable support wheels (507) are symmetrically distributed with the axis of the movable seat (506) as the center. The surface of the drive mounting seat (504) is fixedly connected with guide posts (508). The four guide posts (508) are located at the four corners of the drive mounting seat (504). The surface of the guide posts (508) is slidably connected to the surface of the movable seat (506).

9. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 8, characterized in that: The surface of the movable seat (506) is rotatably connected to the rear sealing cover (509) via a bearing. The surface of the rear sealing cover (509), the surface of the movable seat (506), and the surface of the drive mounting seat (504) are all provided with mounting holes. The inner wall of the mounting hole is rotatably connected to a ceramic ball (5041). A plurality of ceramic balls (5041) are arranged in a ring array with the axis of the mounting hole as the center. A drive tube (510) is sleeved on the inner wall of the mounting hole. The surface of the drive tube (510) is slidably connected to the surface of the ceramic ball (5041). A spline ring (511) is fixedly connected to one end of the drive tube (510). A spline groove (512) adapted to the surface of the spline ring (511) is opened on the inner wall of the fabric tube (311). The surface of the spline ring (511) is inserted into the inner wall of the spline groove (512). Multiple evenly distributed discharge slots (513) are fixedly opened on the surface of the drive tube (510) and the surface of the cloth tube (311). A collection slot (514) is opened on the surface of the drive tube (510) and the cloth tube (311). The four collection slots (514) are symmetrically distributed with the axis of the drive tube (510) and the cloth tube (311) as the center. The inner wall of the collection slot (514) is rotatably connected to an arc-shaped wiping plate (515) through a functional shaft. Torsion springs are sleeved on both ends of the functional shaft. One end of the torsion spring is fixedly connected to the surface of the arc-shaped wiping plate (515), and the other end of the torsion spring is fixedly connected to the inner wall of the collection slot (514).

10. The prefabricated large-diameter pipe column preparation device for prefabricated bridges according to claim 9, characterized in that: A sealing disc (516) for sealing is fixedly connected to the inner wall of the drive tube (510). A driven gear (517) is fixedly sleeved on the surface of the drive tube (510). A wiping drive motor (518) is fixedly mounted on the surface of the drive mounting base (504) through a motor mounting slot. The wiping drive motor (518) is electrically connected to the PLC controller inside the PLC console (2) through a cable. A drive gear (519) is fixedly mounted on the output shaft of the wiping drive motor (518) through a key and a keyway. The surface of the drive gear (519) meshes with the surface of the driven gear (517). A limiting hydraulic cylinder (520) is fixedly installed on the side surface of the drive mounting base (504) near the moving base (506). The two limiting hydraulic cylinders (520) are symmetrically distributed with the axis of the drive mounting base (504) as the center. The limiting hydraulic cylinder (520) is electrically connected to the PLC controller inside the PLC control console (2) through a solenoid valve. One end of the hydraulic rod of the limiting hydraulic cylinder (520) is fixedly connected to a limiting frame (521). The surface of the drive mounting base (504) has two limiting guide grooves corresponding to the two limiting brackets (521). The surface of the limiting bracket (521) is slidably connected to the inner wall of the limiting guide groove. The inner wall of the limiting bracket (521) is rotatably connected to the limiting wheel (522) by a pin. The surface of the drive tube (510) has an annular positioning groove (523). The surface of the limiting wheel (522) is slidably connected to the inner wall of the annular positioning groove (523).

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