A steel bar correction device for the connection of prefabricated hollow slabs in bridges

Abstract

The present invention provides a steel bar correction device for a prefabricated hollow slab connection of a bridge, and relates to the technical field of bridge engineering. The steel bar correction device for a prefabricated hollow slab connection of a bridge comprises a fixed placement box, wherein a lifting and fixing column is provided inside the fixed placement box, wherein the lifting and fixing column passes through the fixed placement box and is slidably connected to the fixed placement box, wherein a rotating connecting rod is rotatably connected inside the lifting and fixing column, and wherein the steel bar correction device for a prefabricated hollow slab connection of a bridge causes the output end of a dual-axis motor to drive two screws to rotate, and when the screws rotate, a second connecting tube is threadedly connected to the outer side of the screws, and the second connecting tube is fixedly connected to a correction installation frame, and a second telescopic rod is fixedly connected between the correction installation frame and the connection frame, thereby causing the correction installation frame to move so as to contact the position of the steel bar, completely covering the top of the steel bar, thereby increasing the contact surface and being more stable during correction.

Description

Technical Field

[0001] The invention relates to a steel bar correction device at a connection of a hollow slab, in particular to a steel bar correction device at a connection of a prefabricated hollow slab of a bridge, and belongs to the technical field of bridge engineering. Background Art

[0002] A bridge is a structure built across rivers, lakes, or seas to facilitate the smooth passage of vehicles and pedestrians. Before pouring the hinge joints of precast hollow slabs in bridges, the U-shaped steel bars extending from the hinge joints need to be straightened.

[0003] Therefore, a patent application numbered CN212945143U has been published for a rebar straightening device for hinged joints in precast hollow slabs in bridges. The device comprises a bearing box, columns, an upper crossbeam, a lower crossbeam, a downward pressure component, and a straightening component. The bearing box is provided with two columns, the upper and lower crossbeams are slidably connected to the two columns, the downward pressure component is positioned between the upper and lower crossbeams, and a force transmission component is provided at the bottom of the lower crossbeam. The force transmission component is movably connected to the straightening component, which is movably nested within the bearing box. This device is low-cost and highly practical. While reducing labor intensity, it can efficiently, labor-savingly, and accurately achieve the horizontal angle of rebar to meet design and specification requirements.

[0004] Patent publication number CN209811091U discloses a sliding groove type straightening device for hinged joint reinforcement of prefabricated hollow slabs in bridges, which relates to the field of construction of prefabricated hollow slabs in bridges. The device comprises a base, on which an input shaft and a rack and pinion box are mounted. The rack and pinion box comprises a housing with an open lower end, wherein a transmission gear, a vertically arranged rack, an output shaft mounted in the housing via a bearing and arranged parallel to the input shaft are arranged in the housing. The input shaft and the output shaft are connected in a transmission manner, and the transmission gear is fixedly mounted on the output shaft. The middle portion of the rack is provided with transmission teeth that mesh with the transmission gear. The two ends of the rack can slide up and down out of the housing and the base, respectively, and the lower end is provided with an open slot facing downward. This straightening device has the advantages of being easy to operate, labor-saving, fast, safe, and reliable. It can also avoid the risk of damage to the hollow slab beam when straightening the hinged joint reinforcement with a manual lever.

[0005] In the above scheme, when the correction plate is inserted into the connection between the two prefabricated hollow slabs of the bridge, it has no locking effect on the downward pressure of the steel bars. When pressing down, the steel bars will slip and deviate, resulting in correction errors. In addition, since the reserved lengths of the steel bars are different, when the correction plate is inserted into the gap, it cannot be adjusted and extended, resulting in the downward pressure only being at the head position of the steel bars, and unable to contact the steel bars to the maximum extent. Summary of the Invention

[0006] (1) Technical problems solved

[0007] The purpose of the present invention is to provide a steel bar correction device at the connection of prefabricated hollow slabs of bridges in order to solve the above problems, so as to solve the problem in the related technology that when the correction plate is inserted into the connection of two prefabricated hollow slabs of bridges, it has no locking effect on the downward pressure of the steel bars. When pressing down, the steel bars will slip and deviate, resulting in correction errors. Moreover, since the reserved lengths of the steel bars are different, when the correction plate is inserted into the gap, it cannot be adjusted and extended, resulting in the downward pressure only being at the head position of the steel bars, and unable to contact the steel bars to the maximum extent.

[0008] (2) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steel bar correction device at the connection of prefabricated hollow slabs of a bridge, comprising a fixed placement box, a lifting and fixing column is provided inside the fixed placement box, the lifting and fixing column passes through the fixed placement box and is slidably connected to the fixed placement box, a rotating connecting rod is rotatably connected inside the lifting and fixing column, and a locking assembly is provided between the lifting and fixing column and the rotating connecting rod.

[0010] Two fixed plates are fixedly connected to the outside of the lifting fixed column, and the tops of the two fixed plates are fixedly connected to a hydraulic telescopic rod for pushing. The hydraulic telescopic rod is fixedly connected to the top of the fixed placement box, and the bottom of the rotating connecting rod is fixedly connected to a connecting frame. Correction mounting frames are provided on both sides of the connecting frame, and a contraction component is provided between the connecting frame and the two correction mounting frames for driving the two correction mounting frames to contract;

[0011] The two correction installation frames are both provided with a limiting component inside for fixing the steel bars;

[0012] The limiting assembly includes a correction lower pressure plate, which is arranged inside the correction mounting frame, and a plurality of third telescopic rods and springs are fixedly connected between the correction lower pressure plate and the correction mounting frame, and the plurality of springs are respectively sleeved on the outside of the plurality of third telescopic rods, and a first rotating shaft and a second rotating shaft are provided on both sides of the correction lower pressure plate, and the first rotating shaft and the second rotating shaft both pass through the correction mounting frame and are rotatably connected to the correction mounting frame;

[0013] The limiting assembly also includes multiple steel bar clamping plates, multiple steel bar clamping plates are respectively fixedly connected to the outside of the two first rotating shafts, and multiple steel bar clamping plates arranged on the outside of the two first rotating shafts are staggered. Multiple first gears are fixedly connected to the outside of the second rotating shaft, and multiple second gears are fixedly connected to the outside of the first rotating shaft. Multiple first gears are respectively meshed with multiple second gears. Multiple collecting wheels are fixedly connected to the outside of the two second rotating shafts, and a steel wire is wrapped and fixed around the outside of the collecting wheel. One end of the steel wire is fixedly connected to the correction lower pressure plate, and a clockwork spring is sleeved on the outside of the two second rotating shafts. The two ends of the clockwork spring are respectively fixedly connected to the second rotating shaft and the correction mounting frame. The second rotating shaft can be driven by the clockwork spring to automatically reset, so that the steel bar clamping plate fixedly connected to the outside of the first rotating shaft releases the fixation of the steel bar.

[0014] Preferably, the locking assembly includes a second worm gear, which is fixedly connected to the outside of the rotating connecting rod, the outside of the second worm gear is meshed with a second worm, the inside of the second worm is fixedly connected to a rotating handle, the outside of the rotating handle is rotatably connected to a mounting bracket, and the mounting bracket is fixedly connected to the lifting and fixing column. The engagement of the second worm and the second worm gear has a locking effect, thereby preventing the rotating connecting rod from rotating arbitrarily inside the lifting and fixing column.

[0015] Preferably, the contraction assembly includes two screw rods, which respectively pass through both ends of the connecting frame and extend into the interior of the connecting frame. A dual-axis motor is fixedly connected to the interior of the connecting frame, and the two output ends of the dual-axis motor are respectively fixedly connected to the two screw rods.

[0016] Preferably, the shrinkage assembly also includes two second connecting tubes, which are respectively fixedly connected to the top of the correction mounting frame, and the second connecting tubes are sleeved on the outside of the screw rod and are threadedly connected to the screw rod. A second telescopic rod is fixedly connected between the correction mounting frame and the connecting frame, and the position of the correction mounting frame can be adjusted according to different lengths of steel bars, so that the correction mounting frame can cover the upper part of the steel bars.

[0017] Preferably, four universal wheels are provided at the bottom of the fixed placement box, and the tops of the four universal wheels are fixedly connected to a first threaded rod, the outer side of the first threaded rod is threadedly connected to a first threaded cylinder, the outer side of the first threaded cylinder is rotatably connected to a side plate, and the side plate is fixedly connected to the inner wall of the fixed placement box.

[0018] Preferably, the tops of the four universal wheels are fixedly connected to a first telescopic rod, the first telescopic rod is fixedly connected to the side plate, the tops of the four first threaded cylinders are fixedly connected to a first bevel gear, and the outer sides of the four first bevel gears are meshed with a second bevel gear.

[0019] Preferably, a connecting rod is fixedly connected between the two opposing second bevel gears, the outer side of the connecting rod is fixedly connected to the first worm gear, the outer side of the connecting rod is rotatably connected to a cross plate, the cross plate is fixedly connected to the inner wall of the fixed placement box, the outer side of the first worm gear is meshed with the first worm, the inside of the first worm is fixedly connected to the rotating rod, and both sides of the inner wall of the fixed placement box are fixedly connected to the first servo motor, the output end of the first servo motor is fixedly connected to the rotating rod, so that the fixed placement box can be lowered to contact the ground, making the overall equipment more stable during correction.

[0020] The present invention provides a steel bar correction device for the connection of prefabricated hollow slabs of bridges, which has the following beneficial effects:

[0021] 1. The steel bar correction device at the connection of the prefabricated hollow slab of the bridge starts the hydraulic telescopic rod fixedly connected inside the fixed placement box, so that the hydraulic telescopic rod pushes the fixed plate fixed at the bottom, so that the fixed plate drives the fixed lifting and fixing columns to descend, so that the lifting and fixing columns are inserted into the gap, and then the rotating connecting rod inside the lifting and fixing columns is moved close to the steel bars through the moving device, so as to achieve the effect of processing steel bars of different depths, and the lifting and fixing columns are rotatably connected to the rotating connecting rod, and the rotating connecting rod can be rotated to make the connection frame and the correction installation frame fixed at the bottom of the rotating connecting rod enter the gap.

[0022] 2. The steel bar correction device at the connection of the prefabricated hollow slab of the bridge makes the output end of the dual-axis motor drive the two screw rods to rotate. When the screw rod rotates, a second connecting tube is threadedly connected to the outer side of the screw rod. The second connecting tube is fixedly connected to the correction installation frame. A second telescopic rod is fixedly connected between the correction installation frame and the connection frame, so that the correction installation frame can be moved to make it contact with the position of the steel bar, and the correction installation frame is completely covered on the top of the steel bar, thereby increasing the contact surface and being more stable during correction.

[0023] 3. The steel bar correction device at the connection of the prefabricated hollow slab of the bridge, when the first worm gear rotates, it drives the fixedly connected connecting rod to rotate, when the connecting rod rotates, it drives the fixedly connected second bevel gear to rotate, so that the second bevel gear drives the meshing first bevel gear to rotate, when the first bevel gear rotates, it drives the fixedly connected first threaded cylinder to rotate, when the first threaded cylinder rotates, it drives the threaded first threaded rod to rotate, because the first threaded rod is fixedly connected to the universal wheel, and the first telescopic rod is fixedly connected between the universal wheel and the side plate, so that the universal wheel rises, and the whole equipment descends to contact with the ground to make it more stable.

[0024] 4. The steel bar correction device at the connection of the prefabricated hollow slab of the bridge, when the second rotating shaft rotates, drives the first gear fixedly connected on the outside to rotate, so that the first gear drives the meshing second gear to rotate, and then the first rotating shaft rotates, and the rotation of the first rotating shaft drives the steel bar clamping plate fixedly connected on the outside to deflect, so as to achieve the effect of multiple steel bar clamping plates staggered clamping the steel bars, avoiding the steel bars from slipping out when pressed down, making the steel bars more stable when correcting, avoiding deviation when the steel bars are pressed down and correcting, and improving stability. When the correction is completed, the hydraulic telescopic rod is started to rise. Since a clockwork spring is fixedly connected between the second rotating shaft and the correction mounting frame, the clockwork spring drives the second rotating shaft to reset and rotate, so that the collecting wheel reels in the steel wire, thereby the first gear rotates, the first rotating shaft rotates, and the steel bar clamping plate releases the limit of the steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a front view structural schematic diagram of the present invention;

[0027] Figure 3 This is a structural schematic diagram of a fixed placement box according to the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the fixed placement box of the present invention;

[0029] Figure 5 This is a schematic diagram of the connecting rod structure of the present invention;

[0030] Figure 6 This is a schematic structural diagram of the first threaded barrel of the present invention;

[0031] Figure 7 This is a schematic diagram of the lifting and fixing column structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the connection frame structure of the present invention;

[0033] Figure 9 This is a structural diagram of the correction installation frame of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the limit assembly of the present invention;

[0035] Figure 11 This is a structural diagram of the correction lower pressure plate of the present invention;

[0036] Figure 12 For the present invention Figure 7 Schematic diagram of the enlarged structure of part B;

[0037] Figure 13 For the present invention Figure 5Schematic diagram of the enlarged structure of part A.

[0038] In the figure: 1. Fixed storage box; 2. Lifting fixed column; 3. Rotating connecting rod; 4. Connecting frame; 5. Universal wheel; 6. First threaded rod; 7. First threaded cylinder; 8. Side plate; 9. First telescopic rod; 10. First bevel gear; 11. Connecting rod; 12. Second bevel gear; 13. Cross plate; 14. First worm gear; 15. First worm; 16. First servo motor; 17. Rotating rod; 18. Fixed plate; 19. Hydraulic telescopic rod; 20. Correction Mounting frame; 21. Screw rod; 22. Dual-axis motor; 23. Second connecting tube; 24. Second telescopic rod; 25. Correction lower pressure plate; 26. First rotating shaft; 27. Second rotating shaft; 28. Third telescopic rod; 29. ​​Spring; 30. First gear; 31. Second gear; 32. Steel wire; 33. Steel bar clamping plate; 34. Second worm gear; 35. Second worm; 36. Rotating handle; 37. Mounting frame; 38. Collecting wheel; 39. Clockwork spring. DETAILED DESCRIPTION

[0039] An embodiment of the present invention provides a steel bar correction device at the connection of prefabricated hollow slabs of a bridge.

[0040] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 , including a fixed placement box 1, a lifting fixed column 2 is provided inside the fixed placement box 1, the lifting fixed column 2 passes through the fixed placement box 1 and is slidably connected to the fixed placement box 1, a rotating connecting rod 3 is rotatably connected inside the lifting fixed column 2, and a locking component is provided between the lifting fixed column 2 and the rotating connecting rod 3;

[0041] Two fixed plates 18 are fixedly connected to the outside of the lifting fixed column 2. The tops of the two fixed plates 18 are fixedly connected to hydraulic telescopic rods 19 for pushing. The hydraulic telescopic rods 19 are fixedly connected to the top of the fixed placement box 1. The bottom of the rotating connecting rod 3 is fixedly connected to a connecting frame 4. Correction mounting frames 20 are provided on both sides of the connecting frame 4. A retraction component is provided between the connecting frame 4 and the two correction mounting frames 20, which is used to drive the two correction mounting frames 20 to retract;

[0042] The two correction installation frames 20 are both provided with limiting components for fixing the steel bars;

[0043] Specifically, such as Figure 1As shown, there are steel bars at the connection of the prefabricated hollow slabs of the bridge. Because the slab beams are prefabricated and easy to transport from the factory, the rectangular steel bars are close to the hollow slab beams. During construction, the rectangular steel bars need to be spread outward so that the rectangular steel bars between adjacent hollow slab beams are corrected to improve the connection strength between the adjacent hollow slab beams. The equipment is moved to the connection between the two hollow slabs, and the lifting and fixing columns 2 are manually aligned with the gap. The hydraulic telescopic rod 19 fixedly connected to the inside of the fixed placement box 1 is activated to push the fixed plate 18 fixedly connected at the bottom, so that the fixed plate 18 drives the fixed lifting and fixing columns 2 to descend, so that the lifting and fixing columns 2 are inserted into the gap. Then, the moving device is used to move the rotating connecting rod 3 inside the lifting and fixing columns 2 close to the steel bars, thereby achieving the effect of processing steel bars of different depths. The lifting and fixing columns 2 are rotatably connected to the rotating connecting rod 3, and the rotating connecting rod 3 can be rotated to make the connecting frame 4 and the correction installation frame 20 fixedly connected to the bottom of the rotating connecting rod 3 enter the gap.

[0044] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 The locking assembly includes a second worm gear 34, which is fixedly connected to the outside of the rotating connecting rod 3. The outside of the second worm gear 34 is meshed with a second worm 35. The inside of the second worm 35 is fixedly connected to a rotating handle 36. The outside of the rotating handle 36 is rotatably connected to a mounting bracket 37. The mounting bracket 37 is fixedly connected to the lifting and fixing column 2. The engagement of the second worm 35 with the second worm gear 34 has a locking effect, preventing the rotating connecting rod 3 from rotating arbitrarily inside the lifting and fixing column 2.

[0045] Specifically, by manually rotating the rotating handle 36, the rotating handle 36 drives the fixedly connected second worm 35 to rotate. When the second worm 35 rotates, it drives the meshing second worm wheel 34 to rotate. When the second worm wheel 34 rotates, it drives the fixedly connected rotating connecting rod 3 to rotate, thereby causing the rotating connecting rod 3 to drive the connecting frame 4 to rotate. After the connecting frame 4 is inserted into the gap between the two prefabricated hollow slabs of the bridge, the angle is adjusted to facilitate the alignment of steel bars at different angles.

[0046] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 The contraction assembly includes two screw rods 21, which respectively pass through the two ends of the connecting frame 4 and extend into the interior of the connecting frame 4. A dual-axis motor 22 is fixedly connected to the interior of the connecting frame 4. The two output ends of the dual-axis motor 22 are respectively fixedly connected to the two screw rods 21. The contraction assembly also includes two second connecting tubes 23, which are respectively fixedly connected to the top of the correction mounting frame 20. The second connecting tubes 23 are sleeved on the outside of the screw rod 21 and are threadedly connected to the screw rod 21. A second telescopic rod 24 is fixedly connected between the correction mounting frame 20 and the connecting frame 4. The position of the correction mounting frame 20 can be adjusted according to different lengths of steel bars, so that the correction mounting frame 20 can cover the upper part of the steel bars.

[0047] Specifically, after alignment, the dual-axis motor 22 inside the connecting frame 4 is started, so that the output end of the dual-axis motor 22 drives the two screw rods 21 to rotate. When the screw rod 21 rotates, a second connecting tube 23 is threadedly connected to the outer side of the screw rod 21. The second connecting tube 23 is fixedly connected to the correction installation frame 20. A second telescopic rod 24 is fixedly connected between the correction installation frame 20 and the connecting frame 4, so that the correction installation frame 20 is moved to make it contact with the position of the steel bar, and the correction installation frame 20 is completely covered on the top of the steel bar, thereby increasing the contact surface and being more stable during correction.

[0048] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13, four universal wheels 5 are set at the bottom of the fixed placement box 1, and the tops of the four universal wheels 5 are fixedly connected to the first threaded rod 6. The outer side of the first threaded rod 6 is threadedly connected to the first threaded cylinder 7. The outer side of the first threaded cylinder 7 is rotatably connected to the side plate 8. The side plate 8 is fixedly connected to the inner wall of the fixed placement box 1. The tops of the four universal wheels 5 are fixedly connected to the first telescopic rod 9. The first telescopic rod 9 is fixedly connected to the side plate 8. The tops of the four first threaded cylinders 7 are fixedly connected to the first bevel gear 10. The outer sides of the four first bevel gears 10 are meshed with the second bevel gear 12. The two opposite second bevel gears A connecting rod 11 is fixedly connected between the wheels 12, and a first worm gear 14 is fixedly connected to the outside of the connecting rod 11. A cross plate 13 is rotatably connected to the outside of the connecting rod 11, and the cross plate 13 is fixedly connected to the inner wall of the fixed placement box 1. A first worm 15 is meshed with the outside of the first worm gear 14, and a rotating rod 17 is fixedly connected to the inside of the first worm gear 15. A first servo motor 16 is fixedly connected to both sides of the inner wall of the fixed placement box 1, and the output end of the first servo motor 16 is fixedly connected to the rotating rod 17, which can make the fixed placement box 1 drop down and contact the ground, making the overall equipment more stable during correction.

[0049] Specifically, in order to maintain the stability of the entire equipment during correction, the two first servo motors 16 are started, so that the output ends of the two first servo motors 16 drive the two rotating rods 17 to rotate. When the rotating rod 17 rotates, it drives the fixedly connected first worm 15 to rotate, so that the first worm 15 drives the meshing first worm gear 14 to rotate. When the first worm gear 14 rotates, it drives the fixedly connected connecting rod 11 to rotate. When the connecting rod 11 rotates, it drives the fixedly connected second bevel gear 12 to rotate, so that the second bevel gear 12 drives the meshing first bevel gear 10 to rotate. When the first bevel gear 10 rotates, it drives the fixedly connected first threaded cylinder 7 to rotate. When the first threaded cylinder 7 rotates, it drives the threaded first threaded rod 6 to rotate. Since the first threaded rod 6 is fixedly connected to the universal wheel 5, a first telescopic rod 9 is fixedly connected between the universal wheel 5 and the side plate 8, so that the universal wheel 5 rises, and the entire equipment descends and contacts the ground to make it more stable.

[0050] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13, the limiting assembly includes a correction lower pressure plate 25, which is arranged inside the correction mounting frame 20, and a plurality of third telescopic rods 28 and springs 29 are fixedly connected between the correction lower pressure plate 25 and the correction mounting frame 20, and a plurality of springs 29 are respectively sleeved on the outside of the plurality of third telescopic rods 28, and a first rotating shaft 26 and a second rotating shaft 27 are provided on both sides of the correction lower pressure plate 25, and the first rotating shaft 26 and the second rotating shaft 27 both pass through the correction mounting frame 20 and are rotatably connected to the correction mounting frame 20, and the limiting assembly also includes a plurality of steel bar clamping plates 33, and the plurality of steel bar clamping plates 33 are respectively fixedly connected to the outside of the two first rotating shafts 26, and the plurality of steel bar clamping plates 33 arranged on the outside of the two first rotating shafts 26 are staggered. A plurality of first gears 30 are fixedly connected to the outside of the rotating shaft 27, and a plurality of second gears 31 are fixedly connected to the outside of the first rotating shaft 26. The plurality of first gears 30 are respectively meshed with the plurality of second gears 31. A plurality of collecting wheels 38 are fixedly connected to the outside of the two second rotating shafts 27. A steel wire 32 is wound and fixed on the outside of the collecting wheel 38. One end of the steel wire 32 is fixedly connected to the correction lower pressure plate 25. A clockwork spring 39 is sleeved on the outside of the two second rotating shafts 27. The two ends of the clockwork spring 39 are respectively fixedly connected to the second rotating shaft 27 and the correction mounting frame 20. The second rotating shaft 27 can be driven by the clockwork spring 39 to automatically reset, so that the steel bar clamping plate 33 fixedly connected to the outside of the first rotating shaft 26 releases the fixation of the steel bar.

[0051] Specifically, when the steel bar is corrected, the hydraulic telescopic rod 19 is lowered, so that the correction lower pressure plate 25 inside the correction installation frame 20 contacts the steel bar. Since the third telescopic rod 28 and the spring 29 are fixedly connected between the correction lower pressure plate 25 and the correction installation frame 20, when the correction installation frame 20 is lowered, the correction lower pressure plate 25 is squeezed and raised. Two first rotating shafts 26 and a second rotating shaft 27 are provided on both sides of the correction installation frame 20. A plurality of collecting wheels 38 are fixedly connected to the outside of the second rotating shaft 27. A steel wire 32 is fixedly connected between the collecting wheel 38 and the correction lower pressure plate 25. When the correction lower pressure plate 25 rises, the collecting wheel 38 is pulled by the steel wire 32, so that the collecting wheel 38 drives the second rotating shaft 27 to rotate. When the second rotating shaft 27 rotates, it drives the first gear 30 fixedly connected to the outside to rotate. The first gear 30 drives the meshing second gear 31 to rotate, and then the first rotating shaft 26 rotates. The rotation of the first rotating shaft 26 drives the steel bar clamping plate 33 fixedly connected on the outside to deflect, so as to achieve the effect of staggered clamping of the multiple steel bar clamping plates 33 on the steel bars, preventing the steel bars from slipping out when pressed down, making the steel bars more stable when correcting, avoiding deviation when the steel bars are pressed down and correcting, and improving stability. When the correction is completed, the hydraulic telescopic rod 19 is started to rise. Since a clockwork spring 39 is fixedly connected between the second rotating shaft 27 and the correction mounting frame 20, the clockwork spring 39 drives the second rotating shaft 27 to reset and rotate, causing the collecting wheel 38 to reel in the steel wire 32, thereby rotating the first gear 30 and rotating the first rotating shaft 26, releasing the limit of the steel bar clamping plate 33 on the steel bar.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar correction device for a prefabricated hollow slab connection of a bridge, comprising a fixed placement box (1), characterized in that: A lifting fixed column (2) is provided inside the fixed placement box (1), the lifting fixed column (2) passes through the fixed placement box (1) and is slidably connected to the fixed placement box (1), a rotating connecting rod (3) is rotatably connected inside the lifting fixed column (2), and a locking component is provided between the lifting fixed column (2) and the rotating connecting rod (3); The outer side of the lifting fixed column (2) is fixedly connected to two fixed plates (18), the tops of the two fixed plates (18) are fixedly connected to hydraulic telescopic rods (19) for pushing, the hydraulic telescopic rods (19) are fixedly connected to the top of the fixed placement box (1), the bottom of the rotating connecting rod (3) is fixedly connected to a connecting frame (4), both sides of the connecting frame (4) are provided with correction installation frames (20), and a contraction component is provided between the connecting frame (4) and the two correction installation frames (20) for driving the two correction installation frames (20) to contract; The two correction installation frames (20) are both provided with a limiting component inside for fixing the steel bars; The limiting component includes a correction lower pressure plate (25), the correction lower pressure plate (25) is arranged inside the correction installation frame (20), a plurality of third telescopic rods (28) and springs (29) are fixedly connected between the correction lower pressure plate (25) and the correction installation frame (20), the plurality of springs (29) are respectively sleeved on the outside of the plurality of third telescopic rods (28), a first rotating shaft (26) and a second rotating shaft (27) are provided on both sides of the correction lower pressure plate (25), the first rotating shaft (26) and the second rotating shaft (27) both pass through the correction installation frame (20) and are rotationally connected to the correction installation frame (20); The limiting assembly also includes a plurality of steel bar clamping plates (33), which are respectively fixedly connected to the outside of the two first rotating shafts (26). The plurality of steel bar clamping plates (33) arranged on the outside of the two first rotating shafts (26) are staggered. A plurality of first gears (30) are fixedly connected to the outside of the second rotating shaft (27). A plurality of second gears (31) are fixedly connected to the outside of the first rotating shaft (26). The plurality of first gears (30) are respectively meshed with the plurality of second gears (31). A plurality of collecting wheels (38) are fixedly connected to the outside of the two second rotating shafts (27). A steel wire (32) is wound and fixed on the outside of the collecting wheel (38). One end of the steel wire (32) is fixedly connected to the correction lower pressure plate (25). A spring (39) is sleeved on the outside of the two second rotating shafts (27). The two ends of the spring (39) are respectively fixedly connected to the second rotating shaft (27) and the correction mounting frame (20).

2. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 1, characterized in that: The locking assembly comprises a second worm gear (34), the second worm gear (34) is fixedly connected to the outside of the rotating connecting rod (3), the outside of the second worm gear (34) is meshedly connected to a second worm (35), the inside of the second worm (35) is fixedly connected to a rotating handle (36), the outside of the rotating handle (36) is rotatably connected to a mounting bracket (37), and the mounting bracket (37) is fixedly connected to the lifting fixed column (2).

3. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 1, characterized in that: The contraction assembly comprises two screw rods (21), the two screw rods (21) respectively passing through two ends of the connection frame (4) and extending into the interior of the connection frame (4), a dual-axis motor (22) is fixedly connected to the interior of the connection frame (4), and two output ends of the dual-axis motor (22) are respectively fixedly connected to the two screw rods (21).

4. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 3, characterized in that: The retraction assembly further comprises two second connecting tubes (23), the two second connecting tubes (23) being fixedly connected to the top of the correction installation frame (20), respectively, the second connecting tubes (23) being sleeved on the outside of the screw rod (21) and being threadedly connected to the screw rod (21), and a second telescopic rod (24) being fixedly connected between the correction installation frame (20) and the connecting frame (4).

5. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 1, characterized in that: Four universal wheels (5) are provided at the bottom of the fixed placement box (1), and the tops of the four universal wheels (5) are fixedly connected to a first threaded rod (6), the outer side of the first threaded rod (6) is threadedly connected to a first threaded cylinder (7), and the outer side of the first threaded cylinder (7) is rotatably connected to a side plate (8), and the side plate (8) is fixedly connected to the inner wall of the fixed placement box (1).

6. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 5, characterized in that: The tops of the four universal wheels (5) are all fixedly connected to a first telescopic rod (9), the first telescopic rod (9) is fixedly connected to the side plate (8), the tops of the four first threaded cylinders (7) are all fixedly connected to a first bevel gear (10), and the outer sides of the four first bevel gears (10) are all meshedly connected to a second bevel gear (12).

7. The steel bar correction device for the connection of prefabricated hollow slabs of bridges according to claim 6, characterized in that: A connecting rod (11) is fixedly connected between the two opposite second bevel gears (12), a first worm gear (14) is fixedly connected to the outside of the connecting rod (11), a transverse plate (13) is rotatably connected to the outside of the connecting rod (11), the transverse plate (13) is fixedly connected to the inner wall of the fixed placement box (1), a first worm gear (15) is meshedly connected to the outside of the first worm gear (14), a rotating rod (17) is fixedly connected inside the first worm gear (15), a first servo motor (16) is fixedly connected to both sides of the inner wall of the fixed placement box (1), and an output end of the first servo motor (16) is fixedly connected to the rotating rod (17).

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