A processing device for prefabricated box girder

Abstract

The application relates to a prefabricated box girder processing device and belongs to the technical field of prefabricated box girders. The device comprises a pedestal assembly, an outer formwork, an inner formwork, an anti-floating assembly and a connecting assembly. The pedestal assembly is used for forming a bottom formwork of the box girder. The outer formwork is connected to the two sides of the main pedestal. The inner formwork is arranged between the main pedestal and the outer formwork. The inner formwork, the outer formwork and the pedestal assembly cooperatively form a pouring space for pouring the box girder. The anti-floating assembly comprises an anti-floating pull rod, an anti-floating sleeve rod and an anti-floating limiting block. The anti-floating sleeve rod is arranged in the pouring space. The anti-floating pull rod is arranged in the anti-floating sleeve rod and penetrates through the inner formwork and the main pedestal. The anti-floating limiting block is arranged at one end of the anti-floating pull rod and abuts against the inner formwork. The connecting assembly is used for fixing the anti-floating pull rod relative to the main pedestal. The application has the beneficial effects of reducing the upward floating of the inner formwork during pouring of the concrete, improving the thickness stability of the web plate of the prefabricated box girder, guaranteeing the thickness of the steel reinforcement protective layer in the prefabricated box girder and improving the processing quality of the prefabricated box girder.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated box girders, and in particular to a processing device for prefabricated box girders. Background Art

[0002] A box girder is a type of beam used in bridge construction. It is hollow inside, with flanges on either side of its upper portion, resembling a box, hence its name. Precast box girders are a common form of superstructure in bridge construction and are typically prefabricated in a precast beam yard.

[0003] In the prior art, the prefabricated box girder is fabricated by first setting up the pedestal, then installing the reinforcement skeleton, corrugated pipe, inner and outer formwork, and end formwork, before pouring the concrete. After the concrete has cured and formed, the end, outer, and inner forms are removed in sequence, and the prestressed tendons are threaded. The concrete and the prestressed tendons embedded within it are then tensioned. After tensioning is complete, grouting is applied to the tendon ducts, followed by curing. Finally, the ends are capped, poured, and cured.

[0004] However, during the concrete pouring process, due to the pouring pressure of concrete, the inner formwork of the box beam is more likely to float up, resulting in a reduction in the thickness of the box beam top plate and the web plate, which leads to insufficient thickness of the steel bar protective layer, and thus reduces the processing quality of the prefabricated box beam, making it easier to form unqualified box beams or even scrap them. Summary of the Invention

[0005] In order to improve the problem that the inner formwork of the box beam is more likely to float up due to the pouring pressure of concrete, resulting in a reduction in the thickness of the box beam top plate and the web thickness, thereby causing insufficient thickness of the steel bar protective layer and further reducing the processing quality of the prefabricated box beam, the present application provides a processing device for a prefabricated box beam.

[0006] The present application provides a prefabricated box beam processing device that adopts the following technical solution:

[0007] A processing device for prefabricated box beams, comprising:

[0008] A pedestal assembly, the pedestal assembly comprising a main pedestal, the main pedestal being used to form a bottom formwork for casting a box girder;

[0009] A formwork assembly, comprising an outer formwork and an inner formwork, wherein the outer formwork is connected to both sides of the main pedestal, and the inner formwork is arranged between the main pedestal and the outer formwork, and the inner formwork, the outer formwork and the main pedestal cooperate to form a pouring space for pouring the box girder;

[0010] An anti-floating assembly, comprising an anti-floating rod, an anti-floating sleeve and an anti-floating limit block. The anti-floating sleeve is arranged in the casting space and abuts against the main pedestal at one end and against the plate surface of the inner formwork at the other end. The anti-floating rod is passed through the anti-floating sleeve and passes through the inner formwork and the main pedestal. The anti-floating limit block is arranged on the anti-floating rod and is located at one end close to the inner formwork. The anti-floating limit block abuts against the side of the inner formwork facing away from the anti-floating sleeve.

[0011] A connecting assembly is provided below the main pedestal and is used to fix the anti-floating pull rod relative to the main pedestal.

[0012] By adopting the above technical solution, during assembly, the relative position between the inner formwork and the main pedestal is first fixed, and then the anti-floating sleeve is arranged in the pouring space while the steel frame is installed, and then the anti-floating rod is passed upward from the bottom of the main pedestal until the anti-floating limit block extends into the inner formwork and abuts against the plate surface of the inner formwork, and then the anti-floating rod is limited and fixed by the connecting component to achieve relative fixation between the anti-floating rod and the main pedestal. Through the arrangement of the anti-floating rod and the anti-floating limit block, the position between the inner formwork and the main pedestal is relatively stable, which is conducive to reducing the floating of the inner formwork during concrete pouring, improving the stability of the web thickness of the prefabricated box girder, ensuring the thickness of the steel protective layer in the prefabricated box girder, and thereby improving the processing quality of the prefabricated box girder.

[0013] Preferably, a first through hole and a first give way groove are provided on the main base, the first give way groove is connected to the first through hole, a second through hole and a second give way groove are provided on the inner template, the second give way groove is connected to the second through hole, the first through hole and the second through hole are coaxially provided and are for the anti-floating rod to pass through, the first give way groove and the second give way groove are for the anti-floating limit block to pass through, and the first give way groove and the second give way groove are staggered along the axial direction of the anti-floating rod.

[0014] By adopting the above technical solution, when assembling the anti-floating rod, the anti-floating limit block is aligned with the first clearance groove, and the anti-floating rod is aligned with the first through hole and then inserted. After the anti-floating rod enters the anti-floating sleeve, the anti-floating rod is rotated so that the anti-floating limit block is staggered with the first clearance groove; at the same time, the anti-floating limit block is aligned with the second clearance groove, and the movement is continued to allow the anti-floating rod to pass through the inner template. After the anti-floating limit block passes through the second clearance groove, the anti-floating rod is rotated so that the anti-floating limit block is staggered with the second clearance groove and abuts against the inner template, thereby realizing the connection between the anti-floating rod and the inner template.

[0015] Preferably, the connecting assembly includes a connecting rod, and the anti-floating rod is provided with a clamping shaft at one end away from the anti-floating limit block. The clamping shaft is coaxial with the anti-floating rod, and one end of the connecting rod is provided with a clamping block for clamping the clamping shaft. The processing device also includes a locking assembly for locking the connecting rod.

[0016] By adopting the above technical solution, the clamping block clamps the clamping shaft to realize the connection between the connecting rod and the anti-floating rod. With the axis of the anti-floating rod as the center of the circle, the anti-floating rod can be driven to rotate by rotating the connecting rod, thereby realizing the disassembly and assembly of the anti-floating rod. After assembly is in place, the locking assembly can limit and fix the connecting rod, which is conducive to improving the convenience of use and operation.

[0017] Preferably, the locking assembly includes a locking rod, a locking sleeve and a locking piece. The locking sleeve is arranged in the casting space, the locking rod is arranged through the main pedestal and the inner template, and is passed through the locking sleeve. A locking groove is provided at the end of the connecting rod away from the anti-floating rod, and the groove opening of the locking groove faces the side where the main pedestal is located. The groove side wall of the locking groove along the length direction is arc-shaped and coaxial with the axis of the anti-floating rod. One end of the locking rod is slidably connected to the locking groove, and the locking piece is arranged in the locking rod. When the locking rod is located in the locking groove, the locking piece abuts against the inner template.

[0018] By adopting the above technical solution, after the anti-floating rod is assembled, the locking rod carrying the locking part is passed through the main base and the inner template, and passes through the locking sleeve, and then the clamping block is clamped on the clamping shaft, and the connecting rod is rotated to drive the anti-floating rod to rotate, and at the same time the locking rod slides into the locking groove, thereby realizing the assembly and fixation of the anti-floating rod and the locking rod simultaneously.

[0019] Preferably, the locking member includes a driving rod, a driving connecting rod and a locking block. A movable groove for sliding the locking block is provided in the locking rod. The driving rod is coaxially arranged in the locking rod and moves axially along the locking rod. The middle part of the driving connecting rod is rotatably connected to the inner wall of the locking rod. One end of the driving connecting rod is hinged to the driving rod, and the other end is hinged to the locking block. The driving rod moves up and down, driving the locking block to move along the movable groove, so that the locking block abuts against the plate surface of the inner template.

[0020] By adopting the above technical solution, before assembly, the locking block is located at one end of the movable groove and inside the locking rod. After the locking rod passes through the main base and the inner template, the driving rod is controlled to move upward. Driven by the driving connecting rod, the locking block moves along the movable groove and extends the locking rod, and then abuts against the plate surface of the inner template, thereby realizing a fixed connection between the locking rod and the inner template.

[0021] Preferably, an opening is provided on one side in the length direction of the locking groove, the bottom of the locking groove is an inclined surface, the groove depth of the locking groove gradually decreases from the opening end, the driving rod abuts against the bottom of the locking groove, and the locking pull rod moves along the locking groove, thereby driving the driving rod to move.

[0022] By adopting the above technical solution, when the locking rod slides into the locking groove, the rod end of the driving rod abuts against the bottom of the locking groove. Since the groove depth of the locking groove gradually decreases from the opening end, when the locking rod moves along the locking groove, the bottom of the locking groove abuts against the driving rod and moves axially, thereby driving the locking block to move.

[0023] Preferably, the pedestal assembly also includes a support frame, a sliding pedestal and a movable pedestal, the main pedestal is fixed on the support frame, the surfaces of the main pedestal, the sliding pedestal and the movable pedestal are flush, the sliding pedestal is connected to the support frame for lifting and sliding, the movable pedestal is movably connected to the support frame and is provided on the side of the sliding pedestal away from the main pedestal, a waist-shaped movable hole is opened on the support frame along the length direction of the main pedestal, a movable shaft is provided on the movable pedestal, and the end of the movable shaft extends into the waist-shaped movable hole, and the processing device also includes a control component for controlling the movement of the sliding pedestal.

[0024] By adopting the above technical solution, after assembly is completed, the surfaces of the main pedestal, the sliding pedestal and the movable pedestal are flush, which is used to form the bottom formwork for pouring the box girder; after pouring is completed, the box girder and the prestressed tendons in the box girder are tensioned. During the tensioning construction, the two ends of the box girder as a whole have a tendency to move toward the middle along the length direction, and the middle part of the box girder tends to be slightly arched. The control component controls the sliding pedestal to move downward to make way for the movable pedestal to move in the waist-shaped movable hole. That is, when the two ends of the box girder are displaced, the movable pedestal moves synchronously, reducing the friction between the box girder end and the main pedestal when it moves, thereby reducing the possibility of cracking at the box girder end, thereby improving the processing quality of the prefabricated box girder.

[0025] Preferably, the control assembly includes a control bolt, a first nut and a second nut. A sliding connecting plate is provided on the sliding platform. The control bolt is passed through the sliding connecting plate and the connecting rod. The first nut is threadedly connected to the control bolt and abuts against the sliding connecting plate. There are at least two second nuts, and at least two of the second nuts are respectively provided on opposite sides of the connecting rod close to the sliding platform and away from the sliding platform, and both are threadedly connected to the control bolt.

[0026] By adopting the above technical solution, after the connecting rod and the anti-floating rod, and the connecting rod and the locking rod are assembled and connected, the control bolt is passed through the sliding connecting plate, and the first nut is rotated to make it abut against the sliding connecting plate, and then the second nut is connected to the control bolt to clamp and fix the connecting rod, thereby achieving relative fixation of the sliding connecting plate and the connecting rod, that is, achieving relative fixation of the sliding pedestal and the connecting rod; when pouring concrete, due to the pouring pressure, the inner formwork, anti-floating rod, locking rod and connecting rod all tend to float and move, thereby making the abutment between the sliding pedestal and the main pedestal and the movable pedestal tighter, which is beneficial to improving the surface flatness of the prefabricated box girder.

[0027] Preferably, an embedded plate is detachably connected to the movable base, and the locking sleeve is fixedly connected to the embedded plate.

[0028] By adopting the above technical solution, after pouring, the embedded plate and the box beam are fixedly connected as one body, which is beneficial to improving the stability of the box beam end; due to the setting of the embedded plate and the movable pedestal, when the box beam is tensioned, the direct friction between the box beam and the main pedestal when it is displaced or arched can be reduced, further reducing the possibility of cracking and damage at the box beam end.

[0029] Preferably, a clearance hole is provided on the connecting rod, the side wall of the clearance hole along the length direction is arc-shaped and coaxial with the axis of the anti-floating rod, and the control bolt is passed through the clearance hole.

[0030] By adopting the above technical solution, when the inner formwork is removed and tensioning is carried out, the connecting rod is driven to rotate, and synchronously, the connecting rod drives the control bolt to move along the makeshift hole; the anti-floating limit block is aligned with the second makeshift groove, and then the connecting rod is moved in the direction away from the main pedestal, driving the anti-floating pull rod to move into the anti-floating sleeve rod until the anti-floating limit block abuts against the main pedestal. At this time, the anti-floating sleeve rod and the box girder are fixedly connected by casting; while the connecting rod moves, with the cooperation of the control component, the sliding pedestal is driven to move downward, so as to make way for the movement of the movable pedestal during subsequent tensioning.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Through the arrangement of anti-floating components, connecting components and locking components, during assembly, first install the anti-floating rod and the locking rod, and then clamp the connecting shaft through the clamping block; rotate the connecting rod along a plane parallel to the main pedestal table and with the axis of the anti-floating rod as the axis, driving the anti-floating rod and the anti-floating limit block to rotate synchronously. At the same time, the locking rod slides into the locking groove. After the connecting rod is rotated into place, the anti-floating rod and the locking rod are connected, and the inner formwork is pulled to connect, reducing the floating movement of the inner formwork during the pouring process, which is beneficial to improving the processing quality of the prefabricated box girder.

[0033] 2. Through the setting of the control component, the sliding pedestal and the movable pedestal, a relatively fixed connection between the sliding pedestal and the connecting rod is achieved through the control component. Even during pouring, the inner formwork will still have a tendency to float up, but due to the mutual abutment between the sliding pedestal, the movable pedestal and the main pedestal, the sliding pedestal is limited, thereby limiting the upward movement of the anti-floating component and the connecting rod; when the connecting rod moves away from the main pedestal, it can drive the sliding pedestal to move synchronously, that is, the abutment on the movable pedestal; when the box girder and the prestressed tendons in the box girder are subsequently tensioned, due to the cast and fixed connection between the embedded plate and the box girder, the box girder produces displacement and a tendency to arch in the middle, and the movable pedestal moves accordingly, reducing the stress concentration at the end of the box girder or the hard friction between the box girder and the main pedestal, which causes cracks and damage at the end of the box girder. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the processing device for prefabricated box beams in the embodiment of the present application.

[0035] Figure 2 It is a schematic diagram used in an embodiment of the present application to illustrate the state of concrete pouring after assembly is completed.

[0036] Figure 3 It is a schematic diagram of the specific structure of the anti-floating component, the connecting component and the locking component in the embodiment of the present application.

[0037] Figure 4 It is a schematic diagram of the state during the installation of the anti-floating tie rod in an embodiment of the present application.

[0038] Figure 5 It is a schematic diagram used to illustrate the assembly state of the connecting component and the locking component in the embodiment of the present application.

[0039] Figure 6 It is a schematic diagram used to reflect the locking state of the locking component and the connecting component in the embodiment of the present application.

[0040] Figure 7 yes Figure 6 A partial enlarged view of part A in the middle.

[0041] Figure 8 It is a schematic diagram used to reflect the active state of the movable platform in the embodiment of the present application.

[0042] Explanation of the reference numerals: 1. pedestal assembly; 11. main pedestal; 111. first through-hole; 112. first clearance groove; 113. first limiting plate; 114. second limiting plate; 115. positioning space; 12. sliding pedestal; 121. sliding connecting plate; 13. movable pedestal; 131. embedded plate; 132. movable shaft; 14. support frame; 141. waist-shaped movable hole; 15. end bracket; 2. formwork assembly; 21. outer formwork; 22. inner formwork; 221. second through-hole; 222. second clearance groove; 3. casting space; 4. anti-floating assembly; 41. anti-floating pull rod; 411. matching block; 42. anti-floating Floating sleeve rod; 43, anti-floating limit block; 44, clamping shaft; 5, locking assembly; 51, locking rod; 511, moving groove; 512, locking slider; 52, locking sleeve rod; 53, locking piece; 531, driving rod; 532, driving connecting rod; 5321, first sliding rod; 5322, second sliding rod; 5323, rotating support shaft; 533, locking block; 6, connecting assembly; 61, connecting rod; 611, clamping block; 612, clearance hole; 62, matching connecting plate; 621, locking slide groove; 622, driving groove; 7, control assembly; 71, control bolt; 72, first nut; 73, second nut. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-8 This application is described in further detail.

[0044] The present application embodiment discloses a processing device for prefabricated box beams, such as Figure 1 、 2 As shown in Figure 3, the precast box girder comprises a pedestal assembly 1, a formwork assembly 2, and an anti-floating assembly 4. The pedestal assembly 1 and the formwork assembly 2 work together to form a formwork for casting a box girder. The anti-floating assembly 4 is used to stabilize the relative position between the assembled formwork assembly 2 and the pedestal assembly 1, thereby ensuring that the web and top plate thicknesses of the precast box girder after casting are consistent. This helps to ensure the thickness of the protective layer of the steel frame within the precast box girder, significantly improving the processing quality of the precast box girder.

[0045] like Figure 2 、 3As shown in Figures 4 and 5, the pedestal assembly 1 includes a support frame 14, a main pedestal 11, a sliding pedestal 12, and a movable pedestal 13. The main pedestal 11 is fixedly connected to the support frame 14, and the sliding pedestal 12 is connected to the support frame 14 for lifting and sliding movement and is located on one side of the length direction of the main pedestal 11. The lateral cross-section of the sliding pedestal 12 is trapezoidal. A movable shaft 132 is fixedly connected to the movable pedestal 13. A waist-shaped movable hole 141 is opened on the support frame 14 along the length direction of the main pedestal 11, and the end of the movable shaft 132 extends into the waist-shaped movable hole 141. End brackets 15 are fixedly connected to both ends of the support frame 14 in the length direction, and the side of the movable pedestal 13 away from the sliding pedestal 12 is against the end bracket 15. The main pedestal 11, the sliding pedestal 12 and the movable pedestal 13 are pressed against each other in sequence. The surfaces of the main pedestal 11, the sliding pedestal 12 and the movable pedestal 13 are flush, and the three cooperate to form a bottom template for casting prefabricated box beams.

[0046] like Figure 3 As shown, the movable pedestal 13 is detachably connected with an embedded plate 131 by bolts, and the embedded plate 131 can be made of steel plate or wood plate, etc. After the prefabricated box beam is cast, the embedded plate 131 is fixedly connected to the box beam as a whole.

[0047] like Figure 1 and 2 As shown, the formwork assembly 2 includes outer formwork 21, inner formwork 22, and end formwork. The outer formwork 21 is connected to opposite sides of the main pedestal 11 along the length direction and is installed on the support frame 14. The inner formwork 22 is installed between the main pedestal 11 and the two outer formworks 21. The end formwork (not shown) is connected to the end bracket 15. The inner formwork 22, outer formwork 21, end formwork and pedestal assembly 1 cooperate to form a casting space 3 for casting precast box beams. During the formwork installation process, a steel reinforcement skeleton (not shown) is simultaneously laid out in the casting space 3.

[0048] like Figure 3 、 4 As shown in Figure 5 , the anti-floating assembly 4 includes an anti-floating rod 41, an anti-floating sleeve 42, and an anti-floating stopper 43. The anti-floating stopper 43 is fixedly connected to the rod wall of the anti-floating rod 41 and located at one end of the anti-floating rod 41. The anti-floating sleeve 42 is synchronously arranged within the casting space 3 along with the reinforcement skeleton. One end of the anti-floating sleeve 42 abuts the main pedestal 11, and the other end abuts the surface of the inner formwork 22. The anti-floating sleeve 42 is passed through the anti-floating rod 41. To reduce concrete leakage, rubber sealing pads are fixedly connected to both ends of the anti-floating sleeve 42.

[0049] like Figure 3As shown, the main pedestal 11 is provided with a first through-hole 111 and a first relief groove 112, which is connected to the first through-hole 111. The inner template 22 is provided with a second through-hole 221 and a second relief groove 222, which are connected to the second through-hole 221. The first through-hole 111 and the second through-hole 221 are coaxially arranged to accommodate the anti-floating rod 41, while the first relief groove 112 and the second relief groove 222 accommodate the anti-floating stop 43. The first relief groove 112 and the second relief groove 222 are staggered along the axial direction of the anti-floating rod 41, with the first relief groove 112 and the second relief groove 222 being centered about the axis of the anti-floating rod 41, and the staggered angle between the first relief groove 112 and the second relief groove 222 is 20-60°.

[0050] like Figure 4 As shown, to facilitate installation of the anti-floating rod 41, a mating block 411 is fixedly connected to the anti-floating rod 41. Along the axial direction of the anti-floating rod 41, the mating block 411 and the anti-floating stop block 43 are interlaced, and along the circumferential direction of the anti-floating rod 41, the mating block 411 and the anti-floating stop block 43 are overlapped. A first stop plate 113 and a second stop plate 114 are fixedly connected to the underside of the main pedestal 11. A positioning space 115 is formed between the first stop plate 113 and the second stop plate 114 for movement of the mating block 411.

[0051] like Figure 4 As shown, when assembling the anti-floating rod 41, the anti-floating stopper 43 is placed against the first stopper plate 113. The anti-floating stopper 43 is aligned with the first clearance groove 112, and the anti-floating rod 41 is inserted into the first through-hole 111. After the anti-floating rod 41 enters the anti-floating sleeve 42, the anti-floating rod 41 is rotated so that the anti-floating stopper 43 and the mating block 411 intersect with the first clearance groove 112. The mating block 411 is then placed against the second stopper plate 114. The anti-floating stopper 43 is then aligned with the second clearance groove 222. The rod 41 is then moved further to pass through the inner template 22. After the anti-floating stopper 43 passes through the second clearance groove 222, the anti-floating rod 41 is rotated so that the anti-floating stopper 43 intersects with the second clearance groove 222 and abuts against the inner template 22, thereby connecting the anti-floating rod 41 to the inner template 22.

[0052] like Figure 3 and 5 As shown, the connecting assembly 6 includes a connecting rod 61 and a clamping block 611. The clamping block 611 is fixedly connected to one end of the connecting rod 61. The end of the anti-floating rod 41 away from the anti-floating stop block 43 is fixedly connected to a clamping shaft 44. The clamping shaft 44 is coaxial with the anti-floating rod 41. The clamping block 611 clamps and secures the clamping shaft 44, thereby connecting the connecting rod 61 to the anti-floating rod 41.

[0053] like Figure 3 、 5As shown in Figure 6, it also includes a locking assembly 5, which includes a locking rod 51 and a locking sleeve 52. The locking sleeve 52 is fixedly connected to the embedded plate 131. The locking sleeve 52 is arranged in the casting space 3 and one end of the locking rod 52 abuts against the inner template 22. The locking rod 51 is arranged to pass through the main base 11 and the inner template 22 and is inserted into the locking sleeve 52. One end of the locking rod 51 is fixedly connected to the locking slider 512. The end of the connecting rod 61 away from the anti-floating rod 41 is fixedly connected to the matching connecting plate 62. The matching connecting plate 62 is provided with a locking groove 621 for the locking slider 512 to slide. The notch of the locking groove 621 faces the side where the main base 11 is located. The side groove wall of the locking groove 621 is arc-shaped along the length direction, and the side groove wall of the locking groove 621 is coaxial with the axis of the anti-floating rod 41. When connected, the moving trajectory of the locking slider 512 along the locking groove 621 is coaxial with the rotating axis of the anti-floating rod 41.

[0054] like Figure 5 、 6 As shown in FIG7 , the locking assembly 5 further includes a locking member 53, which includes a drive rod 531, a drive connecting rod 532, and a locking block 533. A movable groove 511 is symmetrically defined within the locking rod 51 for movement of the locking block 533. The opening trajectory of the movable groove 511 matches the movement trajectory of the locking block 533. The locking block 533 is located at one end of the movable groove 511 and within the locking rod 51. When the locking block 533 moves along the movable groove 511 to the other end, the locking block 533 extends out of the locking rod 51. The drive rod 531 is coaxially disposed within the locking rod 51 and moves axially therewith. The drive connecting rod 532 is disposed within the locking rod 51 and comprises a first sliding rod 5321 and a second sliding rod 5322. One end of the first sliding rod 5321 is hinged to the drive rod 531, while one end of the second sliding rod 5322 is hinged to the locking block 533. The end of the first sliding rod 5321, which is distal from the drive rod 531, slides and extends into the second sliding rod 5322. A rotating support shaft 5323 is fixedly connected to the middle portion of the second sliding rod 5322 and is rotatably connected to the inner wall of the locking rod 51.

[0055] like Figure 3 and 6As shown, the bottom of the locking slot 621 is connected to the driving slot 622. The bottom of the driving slot 622 is inclined, and the depth of the driving slot 622 gradually decreases from the open end. The driving rod 531 abuts the bottom of the driving slot 622. The locking slot 621 and the driving slot 622 are both open on the same side in the longitudinal direction. The driving rod 531 and the locking slider 512 enter the driving groove 622 and the locking slide groove 621 synchronously, and rotate along the plane parallel to the table surface of the main base 11 to cooperate with the connecting plate 62, so that the driving rod 531 slides along the driving groove 622. Under the abutment action of the bottom of the driving groove 622, the driving rod 531 moves upward along its own axis. The movement of the driving rod 531 drives the driving connecting rod 532 to rotate, and then drives the locking block 533 to move along the moving groove 511, so that the locking block 533 extends out of the locking rod 51 and abuts against the inner template 22, thereby realizing the connection between the locking rod 51 and the inner template 22, and at the same time realizing the connection between the locking rod 51 and the connecting rod 61.

[0056] like Figure 4 、 6 As shown in FIG8 , the sliding base 12 is fixedly connected to a sliding link 121 and also includes a control assembly 7 for connecting the sliding link 121 to the connecting rod 61. The control assembly 7 includes a control bolt 71, a first nut 72, and a second nut 73. The control bolt 71 is inserted through the sliding link 121. The first nut 72 is threadedly connected to the control bolt 71 and abuts the sliding link 121. The connecting rod 61 is provided with a clearance hole 612. The side hole wall of the clearance hole 612 along the longitudinal direction is curved and coaxial with the axis of the anti-floating rod 41. The control bolt 71 is inserted into the clearance hole 612. The provision of the clearance hole 612 facilitates the rotation of the connecting rod 61 along the anti-floating rod 41. Two second nuts 73 are provided, one on each opposite side of the connecting rod 61 and each threadedly connected to the control bolt 71.

[0057] The implementation principle of the processing device of a prefabricated box beam in the embodiment of the present application is as follows:

[0058] Before processing, the sliding base 12, the movable base 13 and the main base 11 are connected and assembled, and then the embedded plate 131 and the locking sleeve 52 are connected to the movable base 13, and then the steel frame and the anti-floating sleeve 42 are laid out.

[0059] During assembly, the anti-floating rod 41 is first passed through the main pedestal 11, the anti-floating sleeve 42, and the inner template 22. Simultaneously, the locking rod 51 is passed through the movable pedestal 13, the locking sleeve 52, and the inner template 22. The connecting rod 61 is then connected to the anti-floating rod 41 via the clamping block 611 and the clamping shaft 44. With the table surface parallel to the main pedestal 11 as the plane and the axis of the anti-floating rod 41 as the center of the circle, the connecting rod 61 is rotated, which drives the anti-floating rod 41 to rotate, so that the anti-floating limit block 43 abuts against the inner template 22. At the same time, the driving rod 531 slides into the driving groove 622, and the locking rod 51 slides into the locking groove 621. The connecting rod 61 continues to rotate. Driven by the abutment of the bottom of the driving groove 622, the driving rod 531 rises, causing the locking block 533 to extend from the locking rod 51 and abut against the inner formwork 22. This facilitates operation and improves the relative stability between the inner formwork 22 and the pedestal assembly 1. The sliding connecting plate 121 is then connected to the connecting rod 61 via the control assembly 7. Concrete is poured into the pouring space 3, forming a box girder.

[0060] After casting, the anti-floating sleeve 42, the locking sleeve 52, and the embedded plate 131 are all fixedly connected to the box girder. The outer formwork 21 is then removed first, and the connecting rod 61 is rotated. The connecting rod 61 drives the anti-floating rod 41 and the anti-floating stop block 43 to rotate. At the same time, the drive rod 531 slides out of the drive slot 622, facilitating the removal of the locking rod 51 from the inner formwork 22, the locking rod 51, and the movable pedestal 13. The connecting rod 61 moves away from the main pedestal 11, driving the anti-floating rod 41 to separate from the inner formwork 22. Simultaneously, the connecting rod 61 drives the sliding pedestal 12 downward, and the inner formwork 22 is then removed.

[0061] After dismantling, the box girder and the prestressed tendons inside the box girder are tensioned. During tensioning, the two ends of the box girder are displaced toward the middle and the middle part of the box girder tends to arch. Since the embedded plate 131 is cast and fixedly connected to the box girder, the movable pedestal 13 can be driven to move accordingly, reducing the stress concentration at the end of the box girder or the hard friction between the box girder and the main pedestal 11, which may cause cracks and damage at the end of the box girder.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A processing device for prefabricated box beams, characterized in that: include: A pedestal assembly (1), the pedestal assembly (1) comprising a main pedestal (11), the main pedestal (11) being used to form a bottom formwork for casting a box beam; A formwork assembly (2), the formwork assembly (2) comprising an outer formwork (21) and an inner formwork (22), the outer formwork (21) being connected to both sides of a main pedestal (11), the inner formwork (22) being arranged between the main pedestal (11) and the outer formwork (21), the inner formwork (22), the outer formwork (21) and the main pedestal (11) cooperating to form a pouring space (3) for pouring a box beam; An anti-floating assembly (4), the anti-floating assembly (4) comprising an anti-floating rod (41), an anti-floating sleeve rod (42) and an anti-floating limit block (43); the anti-floating sleeve rod (42) is arranged in the casting space (3) and one end of the anti-floating sleeve rod abuts against the main pedestal (11), and the other end abuts against the plate surface of the inner template (22); the anti-floating rod (41) is passed through the anti-floating sleeve rod (42) and passes through the inner template (22) and the main pedestal (11); the anti-floating limit block (43) is arranged on the anti-floating rod (41) and is located at one end close to the inner template (22); the anti-floating limit block (43) abuts against the side of the inner template (22) away from the anti-floating sleeve rod (42); A connecting assembly (6), wherein the connecting assembly (6) is arranged below the main pedestal (11), and the connecting assembly (6) is used to fix the anti-floating tie rod (41) relative to the main pedestal (11); the pedestal assembly (1) also includes a support frame (14), a sliding pedestal (12) and a movable pedestal (13); the main pedestal (11) is fixed on the support frame (14); during the pouring process, the surfaces of the main pedestal (11), the sliding pedestal (12) and the movable pedestal (13) are flush; the main pedestal (11), the sliding pedestal (12) and the movable pedestal (13) cooperate to form a bottom template for pouring the box beam; The sliding seat (12) is connected to the support frame (14) in a lifting and sliding manner. The movable seat (13) is movably connected to the support frame (14) and is arranged on the side of the sliding seat (12) away from the main seat (11). A waist-shaped movable hole (141) is opened on the support frame (14) along the length direction of the main seat (11). The movable seat (13) is provided with a movable shaft (132). The end of the movable shaft (132) extends into the waist-shaped movable hole (141). The processing device also includes a control component (7) for controlling the movement of the sliding seat (12); the control component (7) includes a control bolt (71), a first nut (72) and a second nut (73). The sliding seat (12) is provided with a sliding connecting plate ( 121), the control bolt (71) is passed through the sliding connecting plate (121) and the connecting rod (61), the first nut (72) is threadedly connected to the control bolt (71) and abuts against the sliding connecting plate (121), and at least two second nuts (73) are provided, and at least two second nuts (73) are respectively provided on the connecting rod (61) close to the sliding seat (12) and on the opposite sides away from the sliding seat (12), and are both threadedly connected to the control bolt (71); a clearance hole (612) is provided on the connecting rod (61), and the side wall of the clearance hole (612) along the length direction is arc-shaped and coaxial with the axis of the anti-floating pull rod (41), and the control bolt (71) is passed through the clearance hole (612).

2. The processing device for a prefabricated box beam according to claim 1, characterized in that: The main pedestal (11) is provided with a first through hole (111) and a first paving groove (112), the first paving groove (112) is communicated with the first through hole (111), the inner template (22) is provided with a second through hole (221) and a second paving groove (222), the second paving groove (222) is communicated with the second through hole (221), the first through hole (111) and the second through hole (221) are coaxially provided and are provided for the anti-floating rod (41) to pass through, the first paving groove (112) and the second paving groove (222) are provided for the anti-floating limit block (43) to pass through, and the first paving groove (112) and the second paving groove (222) are staggered along the axial direction of the anti-floating rod (41).

3. The processing device for prefabricated box beams according to claim 1, characterized in that: The connecting assembly (6) includes a connecting rod (61), an end of the anti-floating rod (41) away from the anti-floating limit block (43) is provided with a clamping shaft (44), the clamping shaft (44) is coaxial with the anti-floating rod (41), and one end of the connecting rod (61) is provided with a clamping block (611) for clamping the clamping shaft (44). The processing device also includes a locking assembly (5) for locking the connecting rod (61).

4. The processing device for prefabricated box beams according to claim 3, characterized in that: The locking assembly (5) includes a locking rod (51), a locking sleeve (52) and a locking member (53). The locking sleeve (52) is arranged in the casting space (3). The locking rod (51) is arranged through the main pedestal (11) and the inner template (22), and is arranged in the locking sleeve (52). The end of the connecting rod (61) away from the anti-floating rod (41) is provided with a locking groove (621), and the groove of the locking groove (621) is facing the main pedestal. (11) is located on the side where the locking groove (621) has an arc-shaped side wall along the length direction and is coaxial with the axis of the anti-floating rod (41). One end of the locking rod (51) is slidably connected to the locking groove (621). The locking member (53) is arranged in the locking rod (51). When the locking rod (51) is located in the locking groove (621), the locking member (53) abuts against the side of the inner template (22) away from the main base (11).

5. The processing device for prefabricated box beams according to claim 4, characterized in that: The locking member (53) includes a driving rod (531), a driving connecting rod (532) and a locking block (533). A movable groove (511) for the locking block (533) to slide is provided in the locking rod (51). The driving rod (531) is coaxially arranged in the locking rod (51) and moves along the axial direction of the locking rod (51). The middle part of the driving connecting rod (532) is rotatably connected to the inner wall of the locking rod (51). One end of the driving connecting rod (532) is hinged to the driving rod (531), and the other end is hinged to the locking block (533). The driving rod (531) moves up and down, driving the locking block (533) to move along the movable groove (511), so that the locking block (533) abuts against the plate surface of the inner template (22).

6. The processing device for prefabricated box beams according to claim 5, characterized in that: The locking groove (621) is provided with an opening on one side in the length direction, the bottom of the locking groove (621) is inclined, the groove depth of the locking groove (621) gradually decreases from the opening end, the driving rod (531) abuts against the bottom of the locking groove (621), and the locking pull rod (51) moves along the locking groove (621), thereby driving the driving rod (531) to move.

7. The processing device for prefabricated box beams according to claim 6, characterized in that: The movable pedestal (13) is detachably connected to an embedded plate (131), and the locking sleeve (52) is fixedly connected to the embedded plate (131).

Images