Intelligent casting device for hydraulic formwork of precast box girder and its construction method

Abstract

This application relates to an intelligent hydraulic formwork casting device and construction method for precast box girders, belonging to the technical field of precast box girders. It includes a base and an outer formwork system. An inner formwork is provided inside the outer formwork system, and a reinforcing cage is provided between the inner formwork and the outer formwork system. The inner formwork includes a first formwork, a second formwork, and a third formwork. The first formwork is located on the side of the reinforcing cage away from the base, the second formwork is located on the side of the first formwork away from the base, and there are two third formworks, which are positioned opposite each other inside the reinforcing cage. A first arc-shaped plate is provided between the third formwork and the first formwork, and a second arc-shaped plate is provided between the third formwork and the second formwork. A fixing frame is provided inside the inner formwork, and both the first and second arc-shaped plates are connected to the fixing frame. A control component is provided inside the outer formwork system. This application has the effect of reducing the working load of the winch.

Description

Technical Field

[0001] This application relates to the technical field of precast box girders, and in particular to an intelligent hydraulic formwork casting device for precast box girders and its construction method. Background Technology

[0002] Box girders are a type of beam used in bridge engineering. They are hollow inside with flanges on both sides of the upper part, resembling a box, hence the name. They are classified as single-box or multi-box girders. Reinforced concrete box girders are divided into precast box girders and cast-in-place box girders. Precast box girders are widely used because they are cast in an independent site and then erected using a bridge erecting machine after the substructure is completed, which can accelerate the project progress and save construction time.

[0003] Currently, bridge box girders are prefabricated using formwork. Before pouring concrete, the formwork needs to be assembled, and after pouring concrete, the formwork needs to be disassembled. The existing method of pulling the inner formwork out of the prefabricated box girder mostly involves using a winch to fix a steel wire rope to the end of the inner formwork, and then pulling the inner formwork out of the prefabricated box girder by the continuous rotation of the winch.

[0004] Regarding the aforementioned technologies, the inventors believe that the outer surface of the inner mold is in direct contact with the inner wall of the precast box girder, and the concrete will also exert a certain adhesive force on the inner mold when it solidifies. Therefore, when the inner mold is pulled out of the precast box girder, a large frictional force will inevitably be generated, which requires increasing the output power of the winch to stably pull the inner mold out of the precast box girder. This results in a high working load on the winch. Summary of the Invention

[0005] To reduce the working load of the winch, this application provides an intelligent hydraulic formwork casting device for precast box girders and its construction method.

[0006] In the first aspect, this application provides an intelligent casting device for hydraulic formwork of precast box girders, which adopts the following technical solution:

[0007] A precast box girder hydraulic formwork intelligent casting device includes a base and an outer formwork system. An inner formwork is provided inside the outer formwork system, and a reinforcing cage is provided between the inner formwork and the outer formwork system. The inner formwork includes a first formwork, a second formwork, and a third formwork. The first formwork is located on the side of the reinforcing cage away from the base, the second formwork is located on the side of the first formwork away from the base, and there are two third formworks, which are arranged opposite each other inside the reinforcing cage. A first arc-shaped plate is provided between the third formwork and the first formwork, and a second arc-shaped plate is provided between the third formwork and the second formwork. A fixed frame is provided inside the inner formwork, and both the first and second arc-shaped plates are connected to the fixed frame. A control component is provided inside the outer formwork system to drive the movement of the first, second, and third formworks.

[0008] By adopting the above technical solution, the first, second, and third templates are moved away from the concrete using the control components. This reduces the contact between the inner template and the concrete when the winch pulls the inner template, thereby reducing the resistance of pulling out the inner template and thus achieving the effect of reducing the working load of the winch.

[0009] Optionally, the control component includes a first moving component, a second moving component, and a third moving component. The first moving component is disposed between the first template and the fixed frame. The first moving component includes a first threaded rod and a first threaded sleeve. The first threaded rod passes through the side wall of the fixed frame facing the first template and is slidably connected to the first template. The end of the first threaded rod away from the fixed frame is fixedly connected to the first template. The first threaded sleeve is threadedly connected to the first threaded rod and is rotatably connected to the fixed frame. The second moving component is disposed between the second template and the fixed frame. The second moving component includes a second threaded rod and a second threaded sleeve. The second threaded rod passes through the side wall of the fixed frame facing the second template and is slidably connected to the first template. The components are slidably connected. The end of the second threaded rod away from the fixed frame is fixedly connected to the second template. The second threaded sleeve is threadedly connected to the second threaded rod, and the second threaded sleeve is rotatably connected to the fixed frame. There are two third moving components, which are respectively located on both sides of the fixed frame. Each third moving component includes a third threaded rod and a third threaded sleeve. The third threaded rod passes through the side wall of the fixed frame facing the third template and is slidably connected to the third template. The end of the third threaded rod away from the fixed frame is fixedly connected to the third template. The third threaded sleeve is threadedly connected to the third threaded rod, and the third threaded sleeve is rotatably connected to the fixed frame. A drive device for driving and controlling the movement of the components is provided inside the fixed frame.

[0010] By adopting the above technical solution, the driving device causes the first threaded sleeve, the second threaded sleeve and the third threaded sleeve to rotate, thereby the first threaded rod, the second threaded rod and the third threaded rod pull the first template, the second template and the third template inward respectively, thereby achieving the effect of the control component driving the first template, the second template and the third template away from the concrete.

[0011] Optionally, the driving device includes a driving bevel gear and a driving motor. The driving motor is mounted on one side of the control component. The driving bevel gear is fixedly connected to the output shaft of the driving motor. A first driven bevel gear that meshes with the driving bevel gear is fixed on the circumferential sidewall of the first threaded sleeve. A second driven bevel gear that meshes with the driving bevel gear is fixed on the circumferential sidewall of the second threaded sleeve. A third driven bevel gear that meshes with the driving bevel gear is fixed on the circumferential sidewall of the third threaded sleeve.

[0012] By adopting the above technical solution, the drive motor causes the first driven bevel gear, the second driven bevel gear, and the third driven bevel gear to rotate through the active bevel gear, thereby causing the first threaded sleeve, the second threaded sleeve, and the third threaded sleeve to rotate, thus achieving the effect of the drive device driving the first threaded sleeve, the second threaded sleeve, and the third threaded sleeve to rotate.

[0013] Optionally, a first baffle is provided on the side of the first arc-shaped plate facing the fixed frame. There are two first baffles, one side of which is hinged together, and the hinge point of the two first baffles is hinged to the first arc-shaped plate. A first bidirectional lead screw is provided between the two first baffles. Both ends of the first bidirectional lead screw are threaded with first adjusting sleeves. The ends of the two first adjusting sleeves that are far apart from each other are respectively hinged to the two first baffles. A first connecting seat is provided between the first bidirectional lead screw and the fixed frame. The first connecting seat is fixedly connected to the fixed frame. The first bidirectional lead screw passes through the end of the connecting seat that is far away from the fixed frame. The first bidirectional lead screw is rotatably connected to the first connecting seat. A first linkage component that drives the first bidirectional lead screw to rotate is provided between the first bidirectional lead screw and the driving device.

[0014] By adopting the above technical solution, the first baffle is used to seal the joint between the first arc plate and the inner formwork, thereby achieving the effect that concrete is not easily leaked between the first arc plate and the inner formwork. At the same time, when the inner formwork moves inward, the two first baffles move closer to each other, thereby achieving the effect that the first baffles do not obstruct the movement of the inner formwork.

[0015] Optionally, the first linkage assembly includes a first linkage roller and a first transmission bevel gear. A first receiving cavity is provided in the first connecting seat, the first receiving cavity penetrates the side wall of the first connecting seat near the first bidirectional lead screw, the first bidirectional lead screw penetrates the first receiving cavity, the first linkage roller is disposed in the first connecting seat and the two are rotatably connected, one end of the first linkage roller extends into the first receiving cavity, and the other end of the first linkage roller extends into the fixed frame, the output shaft of the drive motor is fixedly connected to the linkage bevel gear, the first transmission bevel gear is disposed in the fixed frame, the first transmission bevel gear is fixedly connected to the first linkage roller, and the first transmission bevel gear meshes with the linkage bevel gear, a first synchronous bevel gear is disposed in the first receiving cavity, the first synchronous bevel gear is fixedly connected to the first linkage roller, and a first receiving bevel gear meshing with the first synchronous bevel gear is fixedly disposed on the circumferential side wall of the first bidirectional lead screw.

[0016] By adopting the above technical solution, the drive motor starts and causes the first transmission bevel gear to rotate through the linkage bevel gear. In turn, the first transmission bevel gear causes the first linkage roller to rotate through the first synchronous bevel gear and the first receiving bevel gear, thereby achieving the effect of bringing the two first baffles closer together or opening them.

[0017] Optionally, a second baffle is provided on the side of the second arc-shaped plate facing the fixed frame. There are two second baffles, one side of which is hinged together, and the hinge point of the two second baffles is hinged to the second arc-shaped plate. A second bidirectional lead screw is provided between the two second baffles. Both ends of the second bidirectional lead screw are threaded with second adjusting sleeves. The ends of the two second adjusting sleeves that are far apart from each other are respectively hinged to the two second baffles. A second connecting seat is provided between the second bidirectional lead screw and the fixed frame. The second connecting seat is fixedly connected to the fixed frame. The second bidirectional lead screw passes through the end of the second connecting seat that is far away from the fixed frame. The second bidirectional lead screw is rotatably connected to the second connecting seat. A second linkage component that drives the second bidirectional lead screw to rotate is provided between the second bidirectional lead screw and the driving device.

[0018] By adopting the above technical solution, the second baffle is used to seal the joint between the second arc plate and the inner formwork, thereby achieving the effect that concrete is not easily leaked between the second arc plate and the inner formwork. At the same time, when the inner formwork moves inward, the two second baffles move closer to each other, thereby achieving the effect that the second baffles do not obstruct the movement of the inner formwork.

[0019] Optionally, the second linkage assembly includes a second linkage roller and a second transmission bevel gear. A second receiving cavity is provided in the second connecting seat. The second receiving cavity penetrates the side wall of the second connecting seat near the second bidirectional lead screw. The second bidirectional lead screw penetrates the second receiving cavity. The second linkage roller is disposed in the second connecting seat and the two are rotatably connected. One end of the second linkage roller extends into the second receiving cavity, and the other two ends of the second linkage roller extend into the fixed frame. The second transmission bevel gear is disposed in the fixed frame and is fixedly connected to the second linkage roller. The second transmission bevel gear meshes with the linkage bevel gear. A second synchronous bevel gear is disposed in the second receiving cavity and is fixedly connected to the second linkage roller. A second receiving bevel gear meshing with the second synchronous bevel gear is fixedly disposed on the circumferential side wall of the second bidirectional lead screw.

[0020] By adopting the above technical solution, the drive motor starts and causes the second transmission bevel gear to rotate through the linkage bevel gear. In turn, the second transmission bevel gear causes the second linkage roller to rotate through the second synchronous bevel gear and the second receiving bevel gear, thereby achieving the effect of bringing the two second baffles closer together or opening them.

[0021] Optionally, each of the two opposing sidewalls of the third template is provided with a through groove, which penetrates the end faces of both ends of the third template. A cover plate covers the third template at the through groove, and guide blocks are fixed on both sides of the cover plate. A guide groove is provided on the inner wall of the third template at the through groove, which is slidably connected to the guide blocks. The guide groove penetrates the end faces of both ends of the third template. An installation plate is provided in the through groove. A roller is provided on the side of the installation plate facing the cover plate. A rotating roller is fixed in the roller. Support plates are provided on both sides of the roller. The support plates are fixedly connected to the installation plate. The two ends of the rotating roller are rotatably connected to the two support plates respectively. A rotating motor that drives the rotating roller is installed on the sidewall of the support plate. A transmission component that drives the installation plate to move is provided between the fixed frame and the installation plate.

[0022] By adopting the above technical solution, after the cover plate is disassembled, the installation plate is moved by the transmission component, thereby extending the roller to contact the concrete; when the winch is in operation, the rotating motor is started to rotate the roller, thereby further reducing the working load of the winch.

[0023] Optionally, the transmission assembly includes a fixed base, a transmission screw, and a transmission sleeve. Fixed bases are provided on both sides of the third threaded rod. A hanging rod is fixedly connected between the fixed base and the fixed frame. The transmission screw is disposed in the fixed base and slidably connected to it. The end of the transmission screw away from the fixed frame passes through the third template and is fixedly connected to the mounting plate. The transmission sleeve is threadedly connected to the transmission screw and rotatably connected to the fixed base. A transmission cylinder is sleeved on the third threaded rod. The transmission cylinder passes through the fixed frame and is fixedly connected to the third threaded sleeve. A transmission spur gear is fixedly provided on the circumferential side wall of the transmission cylinder. There are two transmission spur gears. A driven spur gear that meshes with the transmission spur gear is fixedly provided on the circumferential side wall of the transmission sleeve, and the driven spur gear corresponds to the transmission spur gear one-to-one.

[0024] By adopting the above technical solution, the third threaded sleeve drives the transmission spur gear through the transmission cylinder, and the transmission spur gear drives the transmission threaded sleeve to rotate through the driven spur gear. As a result, the transmission screw pushes the mounting plate towards the concrete, thus achieving the effect of the transmission component driving the mounting plate to move.

[0025] Secondly, this application provides a construction method for an intelligent hydraulic formwork casting device for precast box girders, employing the following technical solution:

[0026] A construction method for an intelligent hydraulic formwork casting device for precast box girders includes the following steps:

[0027] S1. Start the drive motor and complete the assembly of the inner template;

[0028] S2. After the pouring is completed, the workers will remove the cover plate from the channel.

[0029] S3. Start the drive motor. At this time, the direction of the drive motor is opposite to that of the drive motor in S1, until the roller comes into contact with the poured concrete.

[0030] S4. Start the winch to pull the inner formwork out of the precast box girder. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of an intelligent hydraulic formwork casting device for precast box girders according to an embodiment of this application;

[0032] Figure 2 This is a side view of an intelligent hydraulic formwork casting device for precast box girders according to an embodiment of this application;

[0033] Figure 3 This is a partial schematic diagram illustrating the movement of the first and second baffles in an embodiment of this application;

[0034] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0035] Figure 5 yes Figure 3 A magnified view of part B in the middle section;

[0036] Figure 6 This is a cross-sectional view illustrating the movement mode of the inner template in an embodiment of this application;

[0037] Figure 7 yes Figure 6 A magnified view of part C in the middle;

[0038] Figure 8 yes Figure 6 A magnified view of part D in the middle;

[0039] Figure 9 yes Figure 6 A magnified view of part E in the middle;

[0040] Figure 10 This is a partial cross-sectional view of an embodiment of the present application, illustrating the internal structure of the through-slot.

[0041] Explanation of reference numerals in the attached drawings: 1. Outer mold system; 11. Base; 12. Reinforcing cage; 2. Inner mold; 21. First mold; 22. Second mold; 23. Third mold; 231. Through groove; 232. Cover plate; 2321. Guide block; 233. Guide groove; 234. Mounting plate; 235. Roller; 2351. Rotating roller; 236. Support plate; 2361. Rotating motor; 3. First arc plate; 31. First baffle; 311. First sealing gasket; 32. First bidirectional lead screw; 321. First adjusting sleeve; 322. First receiver 4. Bevel gear; 5. Second arc-shaped plate; 6. Second baffle; 7. Second sealing gasket; 8. Second bidirectional lead screw; 9. Second adjusting sleeve; 10. Second receiving bevel gear; 11. Fixed frame; 12. Drive device; 13. Drive bevel gear; 14. Drive motor; 15. Linkage bevel gear; 16. First connecting seat; 17. First receiving cavity; 18. Second connecting seat; 19. Second receiving cavity; 20. Hanging rod; 21. Transmission cylinder; 22. Transmission spur gear; 33. Mounting seat; 44. First clearance groove; 55. 71. First limiting block; 58. Second clearance groove; 581. Second limiting block; 59. Third clearance groove; 591. Third limiting block; 6. Control assembly; 61. First moving assembly; 611. First threaded rod; 6111. First limiting groove; 612. First threaded sleeve; 6121. First driven bevel gear; 62. Second moving assembly; 621. Second threaded rod; 6211. Second limiting groove; 622. Second threaded sleeve; 6221. Second driven bevel gear; 63. Third moving assembly; 631. Third threaded rod; 63 11. Third limiting groove; 632. Third threaded sleeve; 6321. Third driven bevel gear; 7. First linkage assembly; 71. First linkage roller; 711. First synchronous bevel gear; 72. First transmission bevel gear; 8. Second linkage assembly; 81. Second linkage roller; 811. Second synchronous bevel gear; 82. Second transmission bevel gear; 9. Transmission assembly; 91. Fixed seat; 911. Fourth clearance groove; 912. Fourth limiting block; 92. Transmission screw; 921. Fourth limiting groove; 93. Transmission threaded sleeve; 931. Driven spur gear. Implementation

[0042] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0043] This application discloses an intelligent casting device for hydraulic formwork of precast box girders.

[0044] refer to Figure 1A precast box girder hydraulic formwork intelligent casting device includes an outer formwork system 1, which is arranged in a horizontal direction. A base 11 is arranged inside the outer formwork system 1, which is arranged along the length of the outer formwork system 1 and is fixedly connected to the ground. A steel cage 12 is arranged inside the outer formwork system 1 and the base 11, and an inner formwork 2 is arranged inside the steel cage 12.

[0045] After the workers moved the outer formwork system 1 into place, they used a gantry crane to hoist the steel cage 12 to the inside of the outer formwork system 1, and then hoisted the inner formwork 2 to the inside of the steel cage 12 before pouring the concrete. After the pouring was completed, the workers used a winch to pull out the inner formwork 2.

[0046] refer to Figure 1 and Figure 2 The inner formwork 2 includes a first formwork 21, a second formwork 22 and a third formwork 23. The first formwork 21 is set horizontally on the side of the reinforcing cage 12 away from the base 11. The second formwork 22 is set horizontally on the side of the first formwork 21 away from the base 11. There are two third formworks 23, which are set opposite to each other on the inner side of the reinforcing cage 12. A first arc plate 3 is set between the third formwork 23 and the first formwork 21, and a second arc plate 4 is set between the third formwork 23 and the second formwork 22.

[0047] refer to Figure 2 A fixed frame 5 is provided in the inner template 2 along its own length direction. A first baffle 31 is provided on the side of the first arc plate 3 facing the fixed frame 5. There are two first baffles 31. The two first baffles 31 are hinged to each other on the side away from the fixed frame 5, and the hinge of the two first baffles 31 is hinged to the first arc plate 3. A first sealing gasket 311 is fixed on the side wall of the two first baffles 31 facing away from each other.

[0048] refer to Figure 3 and Figure 4A first bidirectional lead screw 32 is provided between two first baffles 31. Multiple first bidirectional lead screws 32 are provided, spaced apart along the length of the first baffles 31. Each end of the first bidirectional lead screw 32 has two sections of threads with opposite directions. Both ends of the first bidirectional lead screw 32 are threadedly connected to a first adjusting sleeve 321. Two first adjusting sleeves 321 are respectively disposed on the two sections of threads. The ends of the two first adjusting sleeves 321 that are far apart from each other are hinged to the two first baffles 31. A first connecting seat 52 is provided between the first bidirectional lead screw 32 and the fixed frame 5. One end of the connecting seat 52 is fixedly connected to the fixed frame 5. The first bidirectional lead screw 32 passes through the end of the connecting seat away from the fixed frame 5. The first bidirectional lead screw 32 is rotatably connected to the first connecting seat 52. A first receiving cavity 521 is provided in the first connecting seat 52. The first receiving cavity 521 passes through the side wall of the first connecting seat 52 near the first bidirectional lead screw 32, and the first receiving cavity 521 passes through the side walls on both sides of the first connecting seat 52. The first bidirectional lead screw 32 passes through the first receiving cavity 521. A first receiving bevel gear 322 is fixedly provided on the circumferential side wall of the first bidirectional lead screw 32 in the first receiving cavity 521.

[0049] refer to Figure 3 A drive device 51 is provided inside the fixed frame 5. The number of drive devices 51 is the same as the number of first connecting seats 52 and they correspond one-to-one. The drive device 51 includes a drive motor 512. The drive motor 512 is a dual-axis motor. The drive motor 512 is located inside the fixed frame 5. A mounting seat 56 is fixed between the drive motor 512 and the inner wall of the fixed frame 5.

[0050] refer to Figure 3 and Figure 4 A first linkage assembly 7 is provided between the first bidirectional lead screw 32 and the drive motor 512. The first linkage assembly 7 includes a first linkage roller 71 and a first transmission bevel gear 72. The first linkage roller 71 is disposed in the first connecting seat 52 and the two are rotatably connected. One end of the first linkage roller 71 extends into the first receiving cavity 521, and the other end of the first linkage roller 71 extends into the fixed frame 5. One of the output shafts of the drive motor 512 is fixedly connected to the linkage bevel gear 5121. The first transmission bevel gear 72 is disposed in the fixed frame 5 and is fixedly connected to the first linkage roller 71. The first transmission bevel gear 72 and the linkage bevel gear 5121 are meshed and matched. The end of the first linkage roller 71 away from the fixed frame 5 is fixedly connected to a first synchronous bevel gear 711 that meshes and matches with the first receiving bevel gear 322.

[0051] The drive motor 512 starts and drives the linkage bevel gear 5121 to rotate. The linkage bevel gear 5121 drives the first transmission bevel gear 72 to rotate. The first transmission bevel gear 72 drives the first linkage roller 71 to rotate. The first linkage roller 71 drives the first synchronous bevel gear 711 to rotate. The first synchronous bevel gear 711 drives the first receiving bevel gear 322 to rotate. The first receiving bevel gear 322 drives the first bidirectional lead screw 32 to rotate. The rotation of the first bidirectional lead screw 32 drives the two first adjusting sleeves 321 to move towards each other, thereby bringing the two first baffles 31 closer together.

[0052] refer to Figure 3 and Figure 5 A second baffle 41 is provided on the side of the second arc plate 4 facing the fixed frame 5. There are two second baffles 41. The two second baffles 41 are hinged to each other on the side away from the fixed frame 5, and the hinge of the two second baffles 41 is hinged to the second arc plate 4. A second sealing gasket 411 is fixed on the side wall of the two second baffles 41 facing away from each other.

[0053] refer to Figure 3 and Figure 5 A second bidirectional lead screw 42 is provided between the two second baffles 41. Multiple second bidirectional lead screws 42 are provided, with the number of each corresponding to the number of drive motors 512. The multiple second bidirectional lead screws 42 are spaced apart along the length of the second baffles 41. Each end of the second bidirectional lead screw 42 has two sections of threads with opposite directions. Both ends of the second bidirectional lead screw 42 are threadedly connected to second adjusting sleeves 421. Two second adjusting sleeves 421 are respectively provided on the two sections of threads. The ends of the two adjusting sleeves 421 that are far apart from each other are hinged to the two second baffles 41. The second bidirectional lead screw 42 is connected to the fixed frame 512. A second connecting seat 53 is provided between the two. One end of the second connecting seat 53 is fixedly connected to the fixed frame 5. A second bidirectional lead screw 42 passes through the end of the connecting seat away from the fixed frame 5. The second bidirectional lead screw 42 is rotatably connected to the second connecting seat 53. A second receiving cavity 531 is provided inside the second connecting seat 53. The second receiving cavity 531 passes through the side wall of the second connecting seat 53 near the second bidirectional lead screw 42, and the second receiving cavity 531 passes through the side walls on both sides of the first connecting seat 52. The second bidirectional lead screw 42 passes through the first receiving cavity 521. A second receiving bevel gear 422 is fixedly provided on the circumferential side wall of the second bidirectional lead screw 42 inside the first receiving cavity 521.

[0054] refer to Figure 3 and Figure 5A second linkage assembly 8 is provided between the second bidirectional lead screw 42 and the drive motor 512. The second linkage assembly 8 includes a second linkage roller 81 and a second transmission bevel gear 82. The second linkage roller 81 is disposed in the second connecting seat 53 and the two are rotatably connected. One end of the second linkage roller 81 extends into the second receiving cavity 531, and the other end of the second linkage roller 81 extends into the fixed frame 5. The second transmission bevel gear 82 is disposed in the fixed frame 5 and is fixedly connected to the second linkage roller 81. The second transmission bevel gear 82 meshes with the linkage bevel gear 5121. The end of the second linkage roller 81 away from the fixed frame 5 is fixedly connected to a second synchronous bevel gear 811 that meshes with the second receiving bevel gear 422.

[0055] The drive motor 512 starts and drives the linkage bevel gear 5121 to rotate. The linkage bevel gear 5121 drives the second transmission bevel gear 82 to rotate. The second transmission bevel gear 82 drives the second linkage roller 81 to rotate. The second linkage roller 81 drives the second synchronous bevel gear 811 to rotate. The second synchronous bevel gear 811 drives the second receiving bevel gear 422 to rotate. The second receiving bevel gear 422 drives the second bidirectional lead screw 42 to rotate. The rotation of the second bidirectional lead screw 42 drives the two second adjusting sleeves 421 to move towards each other, thereby bringing the two second baffles 41 closer together.

[0056] refer to Figure 3 The drive motor 512 also includes a drive bevel gear 511, which is fixedly connected to the output shaft of the drive motor 512. The drive bevel gear 511 and the linkage bevel gear 5121 are respectively set on the two output shafts of the drive motor 512.

[0057] refer to Figure 3 and Figure 6 A control component 6 is provided between the fixed frame 5 and the inner template 2. Multiple control components 6 are provided, and the number of control components 6 is the same as the number of drive devices 51 and corresponds one-to-one. The control component 6 includes a first moving component 61, a second moving component 62 and a third moving component 63. The first moving component 61 is provided between the first template 21 and the fixed frame 5. The second moving component 62 is provided between the second template 22 and the fixed frame 5. There are two third moving components 63, which are respectively provided on both sides of the fixed frame 5.

[0058] refer to Figure 6 and Figure 7The first moving component 61 includes a first threaded rod 611 and a first threaded sleeve 612. The first threaded rod 611 passes through the side wall of the fixed frame 5 facing the first template 21 and is slidably connected to it. The side wall of the fixed frame 5 facing the first template 21 is provided with a first clearance groove 57 for the first threaded rod 611 to pass through. The end of the first threaded rod 611 away from the fixed frame 5 is fixedly connected to the first template 21. The first threaded sleeve 612 is threadedly connected to the first threaded rod 611 and is rotatably connected to the fixed frame 5. The circumferential side wall of the first threaded sleeve 612 is fixedly provided with a first driven bevel gear 6121 that meshes with the driving bevel gear 511.

[0059] refer to Figure 7 The fixed frame 5 is fixedly provided with a first limiting block 571 on the inner wall of the first clearance groove 57, and the side wall of the first threaded rod 611 is provided with a first limiting groove 6111 that is slidably adapted to the first limiting block 571. The first limiting groove 6111 is opened along the length direction of the first threaded rod 611.

[0060] The drive motor 512 starts and drives the active bevel gear 511 to rotate. The active bevel gear 511 drives the first driven bevel gear 6121 to rotate. The first driven bevel gear 6121 drives the first threaded sleeve 612 to rotate. The first threaded sleeve 612 drives the first threaded rod 611 to pull the first template 21 inward. At the same time, the first threaded rod 611 causes the first limiting block 571 to slide along the first limiting groove 6111.

[0061] refer to Figure 6 and Figure 8 The second moving component 62 includes a second threaded rod 621 and a second threaded sleeve 622. The second threaded rod 621 passes through the side wall of the fixed frame 5 facing the second template 22 and is slidably connected to it. The side wall of the fixed frame 5 facing the first template 21 is provided with a second clearance groove 58 for the second threaded rod 621 to pass through. The end of the second threaded rod 621 away from the fixed frame 5 is fixedly connected to the second template 22. The second threaded sleeve 622 is threadedly connected to the second threaded rod 621 and is rotatably connected to the fixed frame 5. The circumferential side wall of the second threaded sleeve 622 is fixedly provided with a second driven bevel gear 6221 that meshes with the driving bevel gear 511.

[0062] refer to Figure 8 The fixed frame 5 is fixed with a second limiting block 581 on the inner wall of the second clearance groove 58, and the side wall of the second threaded rod 621 is provided with a second limiting groove 6211 that is slidably adapted to the second limiting block 581. The second limiting groove 6211 is opened along the length direction of the second threaded rod 621.

[0063] The rotation of the active bevel gear 511 drives the rotation of the second driven bevel gear 6221, which in turn drives the rotation of the second threaded sleeve 622. The second threaded sleeve 622 drives the second threaded rod 621 to pull the second template 22 inward, while the second threaded rod 621 causes the second limiting block 581 to slide along the second limiting groove 6211.

[0064] refer to Figure 6 and Figure 9 The third moving component 63 includes a third threaded rod 631 and a third threaded sleeve 632. The third threaded rod 631 passes through the side wall of the fixed frame 5 facing the third template 23 and is slidably connected to it. The side wall of the fixed frame 5 facing the third template 23 is provided with a third clearance groove 59 for the third threaded rod 631 to pass through. The end of the third threaded rod 631 away from the fixed frame 5 is fixedly connected to the third template 23. The third threaded sleeve 632 is threadedly connected to the third threaded rod 631 and is rotatably connected to the fixed frame 5. The circumferential side wall of the third threaded sleeve 632 is fixedly provided with a third driven bevel gear 6321 that meshes with the driving bevel gear 511.

[0065] refer to Figure 9 The fixed frame 5 has a third limiting block 591 fixed on the inner wall of the third clearance groove 59, and the side wall of the third threaded rod 631 has a third limiting groove 6311 that is slidably adapted to the third limiting block 591. The third limiting groove 6311 is opened along the length direction of the third threaded rod 631.

[0066] The rotation of the active bevel gear 511 drives the rotation of the third driven bevel gear 6321, which in turn drives the rotation of the third threaded sleeve 632. The third threaded sleeve 632 drives the third threaded rod 631 to pull the third template 23 inward. At the same time, the third threaded rod 631 causes the third limiting block 591 to slide along the third limiting groove 6311.

[0067] refer to Figure 6 and Figure 10 Both of the two opposing sidewalls of the third template 23 are provided with through grooves 231. The through grooves 231 are opened along the length of the third template 23 and penetrate through the end faces of both ends of the third template 23. The third template 23 is covered with a cover plate 232 at the through groove 231. Guide blocks 2321 are fixed on both sides of the cover plate 232. The inner wall of the third template 23 at the through groove 231 is provided with a guide groove 233 that is slidably connected to the guide block 2321. The guide groove 233 penetrates through the end faces of both ends of the third template 23. Bolts are provided between the guide block 2321 and the third template 23.

[0068] refer to Figure 10An installation plate 234 is provided in the through groove 231. The installation plate 234 is arranged along the length of the through groove 231. A roller 235 is provided on the side of the installation plate 234 facing the cover plate 232. The number of rollers 235 is the same as the number of the third moving components 63 and corresponds one-to-one. A rotating roller 2351 is fixedly installed in the roller 235. A support plate 236 is provided on both sides of the roller 235. The support plate 236 is fixedly connected to the installation plate 234. The two ends of the rotating roller 2351 are rotatably connected to the two support plates 236 respectively. A rotating motor 2361 that drives the rotating roller 2351 to rotate is installed on the side wall of the support plate 236.

[0069] After the concrete pouring is completed, the workers remove the auger and then pull the cover plate 232 out of the through groove 231. As the cover plate 232 moves, it drives the guide block 2321 to slide along the guide groove 233. After the cover plate 232 is pulled out, the mounting plate 234 moves away from the fixed frame 5 until the roller 235 comes into contact with the concrete. When the winch is in operation, the rotating motor 2361 starts and drives the rotating roller 2351 to rotate, which in turn drives the roller 235 to roll.

[0070] refer to Figure 6 and Figure 9 A transmission assembly 9 is provided between the fixed frame 5 and the mounting plate 234. Transmission assemblies 9 are provided on both sides of the third threaded rod 631. The transmission assembly 9 includes a fixed seat 91, a transmission screw 92 and a transmission sleeve 93. The fixed seat 91 is arranged in the horizontal direction. A hanging rod 54 is fixedly connected between the fixed seat 91 and the fixed frame 5. The transmission screw 92 is arranged in the fixed seat 91 and the two are slidably connected. A fourth clearance groove 911 is opened through the end face of the fixed seat 91 facing the fixed frame 5 for the transmission screw 92 to pass through. The end of the transmission screw 92 away from the fixed frame 5 passes through the third template 23 and is fixedly connected to the mounting plate 234. The transmission sleeve 93 is arranged on the side of the fixed seat 91 away from the third template 23. The transmission sleeve 93 is threadedly connected to the transmission screw 92 and is rotatably connected to the fixed seat 91.

[0071] refer to Figure 9 The fixed base 91 has a fourth limiting block 912 fixed on the inner wall of the fourth clearance groove 911. The side wall of the transmission screw 92 has a fourth limiting groove 921 that is slidably adapted to the fourth limiting block 912. The fourth limiting groove 921 is opened along the length direction of the transmission screw 92.

[0072] The rotation of the transmission screw sleeve 93 drives the transmission screw 92 to push the mounting plate 234 away from the fixed frame 5. At the same time, the transmission screw 92 causes the fourth limiting block 912 to slide along the fourth limiting groove 921.

[0073] refer to Figure 9A transmission cylinder 55 is sleeved on the third threaded rod 631. There is a gap between the transmission cylinder 55 and the third threaded rod 631. The transmission cylinder 55 passes through the fixing frame 5 and is fixedly connected to the third threaded sleeve 632. A transmission spur gear 551 is fixedly provided on the circumferential side wall of the transmission cylinder 55. There are two transmission spur gears 551. A driven spur gear 931 that meshes with the transmission spur gear 551 is fixedly provided on the circumferential side wall of the transmission screw sleeve 93. The driven spur gear 931 and the transmission spur gear 551 correspond one-to-one.

[0074] The rotation of the third threaded sleeve 632 drives the transmission cylinder 55 to rotate, the transmission cylinder 55 drives the transmission spur gear 551 to rotate, the transmission spur gear 551 drives the driven spur gear 931 to rotate, and the driven spur gear 931 drives the transmission threaded sleeve 93 to rotate.

[0075] The implementation principle of the intelligent hydraulic formwork casting device for precast box girder according to an embodiment of this application is as follows: After casting is completed, the worker pulls the cover plate 232 out of the through groove 231 and starts the drive motor 512. At this time, the drive motor 512 pulls the inner formwork 2 inward through the first moving component 61, the second moving component 62 and the third moving component 63. At the same time, the mounting plate 234 drives the roller 235 to abut against the concrete. When the winch is in operation, the worker starts the rotating motor 2361. The rotating motor 2361 drives the roller 235 to rotate through the rotating roller 2351. Through the above structure, the working load of the winch is reduced.

[0076] This application also discloses a construction method for an intelligent hydraulic formwork casting device for precast box girders.

[0077] Includes the following steps:

[0078] S1. Start the drive motor 512 to complete the splicing of the inner template 2;

[0079] S2. After the pouring is completed, the workers will pull the cover plate 232 out of the channel 231;

[0080] S3. Start the drive motor 512. At this time, the direction of the drive motor 512 is opposite to that of the drive motor 512 in S1, until the roller 235 comes into contact with the poured concrete.

[0081] S4. Start the winch to pull the inner formwork 2 out of the precast box girder.

[0082] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A precast box girder hydraulic formwork intelligent pouring device, comprising a base (11) and an outer formwork system (1), characterized in that: An inner template (2) is provided inside the outer formwork system (1). A reinforcing cage (12) is provided between the inner template (2) and the outer formwork system (1). The inner template (2) includes a first template (21), a second template (22), and a third template (23). The first template (21) is located on the side of the reinforcing cage (12) away from the base (11). The second template (22) is located on the side of the first template (21) away from the base (11). There are two third templates (23), and the two third templates (23) are arranged opposite each other. The first arc plate (3) is set between the third template (23) and the first template (21) and the second arc plate (4) is set between the third template (23) and the second template (22). A fixed frame (5) is set inside the inner template (2). The first arc plate (3) and the second arc plate (4) are both connected to the fixed frame (5). A control component (6) that drives the first template (21), the second template (22) and the second template (22) to move is set inside the outer template system (1). Both of the two opposing sidewalls of the third template (23) are provided with through grooves (231), which penetrate the end faces of both ends of the third template (23). A cover plate (232) covers the through grooves (231) of the third template (23). Guide blocks (2321) are fixed on both sides of the cover plate (232). A guide groove (233) is provided on the inner wall of the through groove (231) of the third template (23) and is slidably connected to the guide blocks (2321). The guide groove (233) penetrates the end faces of both ends of the third template (23). An installation plate (234) is provided inside the through groove (231). 234) A roller (235) is provided on one side facing the cover plate (232). A rotating roller (2351) is fixed inside the roller (235). Support plates (236) are provided on both sides of the roller (235). The support plates (236) are fixedly connected to the mounting plate (234). The two ends of the rotating roller (2351) are rotatably connected to the two support plates (236) respectively. A rotating motor (2361) that drives the rotating roller (2351) to rotate is installed on the side wall of the support plate (236). A transmission assembly (9) that drives the mounting plate (234) to move is provided between the fixed frame (5) and the mounting plate (234).

2. The precast box girder hydraulic formwork intelligent pouring device according to claim 1, characterized in that: The control component (6) includes a first moving component (61), a second moving component (62), and a third moving component (63). The first moving component (61) is disposed between the first template (21) and the fixed frame (5). The first moving component (61) includes a first threaded rod (611) and a first threaded sleeve (612). The first threaded rod (611) passes through the side wall of the fixed frame (5) facing the first template (21) and is slidably connected to it. The end of the first threaded rod (611) away from the fixed frame (5) is fixedly connected to the first template (21). The first threaded sleeve (612) is threadedly connected to the first threaded rod (611) and is rotatably connected to the fixed frame (5). The second moving component (62) is disposed between the second template (22) and the fixed frame (5). The second moving component (62) includes a second threaded rod (621) and a second threaded sleeve (622). The second threaded rod (621) passes through the side wall of the fixed frame (5) facing the second template (22). The wall and the two are slidably connected. The end of the second threaded rod (621) away from the fixed frame (5) is fixedly connected to the second template (22). The second threaded sleeve (622) is threadedly connected to the second threaded rod (621), and the second threaded sleeve (622) is rotatably connected to the fixed frame (5). There are two third moving components (63). The two third moving components (63) are respectively set on both sides of the fixed frame (5). The third moving component (63) includes a third threaded rod (631) and a third threaded sleeve (632). The third threaded rod (631) passes through the side wall of the fixed frame (5) towards the third template (23) and the two are slidably connected. The end of the third threaded rod (631) away from the fixed frame (5) is fixedly connected to the third template (23). The third threaded sleeve (632) is threadedly connected to the third threaded rod (631), and the third threaded sleeve (632) is rotatably connected to the fixed frame (5). The fixed frame (5) is provided with a driving device (51) for driving the control component (6) to move.

3. The precast box girder hydraulic formwork intelligent pouring device according to claim 2, characterized in that: The drive device (51) includes a drive bevel gear (511) and a drive motor (512). The drive motor (512) is mounted on one side of the control component (6). The drive bevel gear (511) is fixedly connected to the output shaft of the drive motor (512). A first driven bevel gear (6121) that meshes with the drive bevel gear (511) is fixed on the circumferential sidewall of the first threaded sleeve (612). A second driven bevel gear (6221) that meshes with the drive bevel gear (511) is fixed on the circumferential sidewall of the second threaded sleeve (622). A third driven bevel gear (6321) that meshes with the drive bevel gear (511) is fixed on the circumferential sidewall of the third threaded sleeve (632).

4. The precast box girder hydraulic formwork intelligent pouring device according to claim 3, characterized in that: The first arc-shaped plate (3) is provided with a first baffle (31) on the side facing the fixed frame (5). There are two first baffles (31), and one side of the two first baffles (31) is hinged together. The hinge point of the two first baffles (31) is hinged to the first arc-shaped plate (3). A first bidirectional lead screw (32) is provided between the two first baffles (31). Both ends of the first bidirectional lead screw (32) are threaded with first adjusting sleeves (321). The ends of the two first adjusting sleeves (321) that are far apart from each other are... The first bidirectional screw (32) is hinged to the two first baffles (31). A first connecting seat (52) is provided between the first bidirectional screw (32) and the fixed frame (5). The first connecting seat (52) is fixedly connected to the fixed frame (5). The first bidirectional screw (32) passes through the end of the connecting seat away from the fixed frame (5). The first bidirectional screw (32) is rotatably connected to the first connecting seat (52). A first linkage assembly (7) that drives the first bidirectional screw (32) to rotate is provided between the first bidirectional screw (32) and the drive device (51).

5. The precast box girder hydraulic formwork intelligent pouring device according to claim 4, characterized in that: The first linkage assembly (7) includes a first linkage roller (71) and a first transmission bevel gear (72). A first receiving cavity (521) is provided in the first connecting seat (52). The first receiving cavity (521) penetrates the side wall of the first connecting seat (52) near the first bidirectional lead screw (32). The first bidirectional lead screw (32) penetrates the first receiving cavity (521). The first linkage roller (71) is disposed in the first connecting seat (52) and the two are rotatably connected. One end of the first linkage roller (71) extends into the first receiving cavity (521), and the other end of the first linkage roller (71) extends into the fixed frame (5). The drive motor ( The output shaft of 512) is fixedly connected to a linkage bevel gear (5121). The first transmission bevel gear (72) is set in the fixed frame (5). The first transmission bevel gear (72) is fixedly connected to the first linkage roller (71), and the first transmission bevel gear (72) meshes with the linkage bevel gear (5121). The first receiving cavity (521) is provided with a first synchronous bevel gear (711). The first synchronous bevel gear (711) is fixedly connected to the first linkage roller (71). The circumferential sidewall of the first bidirectional lead screw (32) is fixedly provided with a first receiving bevel gear (322) that meshes with the first synchronous bevel gear (711).

6. The precast box girder hydraulic formwork intelligent pouring device according to claim 5, characterized in that: The second arc-shaped plate (4) is provided with a second baffle (41) on the side facing the fixed frame (5). There are two second baffles (41), and one side of the two second baffles (41) is hinged together. The hinge point of the two second baffles (41) is hinged to the second arc-shaped plate (4). A second bidirectional screw (42) is provided between the two second baffles (41). Both ends of the second bidirectional screw (42) are threaded with second adjusting sleeves (421). The ends of the two second adjusting sleeves (421) that are far apart from each other are respectively connected to two... A second baffle (41) is hinged, a second connecting seat (53) is provided between the second bidirectional lead screw (42) and the fixed frame (5), the second connecting seat (53) is fixedly connected to the fixed frame (5), the second bidirectional lead screw (42) passes through the end of the second connecting seat (53) away from the fixed frame (5), the second bidirectional lead screw (42) is rotatably connected to the second connecting seat (53), and a second linkage assembly (8) that drives the second bidirectional lead screw (42) to rotate is provided between the second bidirectional lead screw (42) and the drive device (51).

7. The precast box girder hydraulic formwork intelligent pouring device according to claim 6, characterized in that: The second linkage assembly (8) includes a second linkage roller (81) and a second transmission bevel gear (82). A second receiving cavity (531) is provided in the second connecting seat (53). The second receiving cavity (531) penetrates the side wall of the second connecting seat (53) near the second bidirectional lead screw (42). The second bidirectional lead screw (42) penetrates the second receiving cavity (531). The second linkage roller (81) is disposed in the second connecting seat (53) and the two are rotatably connected. One end of the second linkage roller (81) extends into the second receiving cavity (531), and the other two ends of the second linkage roller (81) are... The second transmission bevel gear (82) is installed inside the fixed frame (5). The second transmission bevel gear (82) is fixedly connected to the second linkage roller (81), and the second transmission bevel gear (82) meshes with the linkage bevel gear (5121). The second receiving cavity (531) is provided with a second synchronous bevel gear (811), which is fixedly connected to the second linkage roller (81). The circumferential sidewall of the second bidirectional screw (42) is fixedly provided with a second receiving bevel gear (422) that meshes with the second synchronous bevel gear (811).

8. The precast box girder hydraulic formwork intelligent pouring device according to claim 7, characterized in that: The transmission assembly (9) includes a fixed seat (91), a transmission screw (92), and a transmission sleeve (93). Fixed seats (91) are provided on both sides of the third threaded rod (631). A hanging rod (54) is fixedly connected between the fixed seat (91) and the fixed frame (5). The transmission screw (92) is located within the fixed seat (91) and slidably connected to it. The end of the transmission screw (92) away from the fixed frame (5) passes through the third template (23) and is fixedly connected to the mounting plate (234). The transmission sleeve (93) is threadedly connected to the transmission screw (92), and the transmission... The moving threaded sleeve (93) is rotatably connected to the fixed seat (91). A transmission cylinder (55) is sleeved on the third threaded rod (631). The transmission cylinder (55) passes through the fixed frame (5) and is fixedly connected to the third threaded sleeve (632). A transmission spur gear (551) is fixedly provided on the circumferential side wall of the transmission cylinder (55). There are two transmission spur gears (551). A driven spur gear (931) that meshes with the transmission spur gear (551) is fixedly provided on the circumferential side wall of the transmission threaded sleeve (93). The driven spur gear (931) and the transmission spur gear (551) correspond one-to-one.

9. A construction method of the intelligent pouring device of the prefabricated box girder hydraulic formwork, which is suitable for the intelligent pouring device of the prefabricated box girder hydraulic formwork of claim 8, characterized in that: Includes the following steps: S1. Start the drive motor (512) to complete the splicing of the inner template (2); S2. After the pouring is completed, the workers will pull the cover plate (232) out of the through groove (231); S3. Start the drive motor (512). At this time, the direction of the drive motor (512) is opposite to that of the drive motor (512) in S1, until the roller (235) comes into contact with the poured concrete. S4. Start the winch to pull the inner formwork (2) out of the precast box girder.

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