Adjustable prefabricated box girder pedestal

Abstract

The utility model discloses an adjustable prefabricated box girder pedestal, including fixed base and telescopic pedestal. The adjustable prefabricated box girder pedestal, the top of fixed base is equipped with telescopic pedestal, and telescopic pedestal includes two foundation beams of symmetrical settings, and the opposite side of foundation beam all is fixedly connected with pad pole, and the end of pad pole away from foundation beam is commonly fixedly connected with the reinforcing beam, and the first guide rod is connected in the common equidistance sliding of reinforcing beam, and the bottom of foundation beam all is fixedly connected with mounting panel, and the linkage drive mechanism is equipped between mounting panel and fixed base, and the top of fixed base is equipped with telescopic pedestal, and two foundation beams on telescopic pedestal can be driven and adjusted interval through linkage drive mechanism cooperation mounting panel, wherein the process of foundation beam interval adjustment forms a support platform through pad pole, thereby can support bottom steel sheet, and cooperate foundation beam and fix bottom steel sheet and side edge formwork, thereby convenient adaptation different width prefabricated beam production.

Description

Technical Field

[0001] This utility model relates to the technical field of box girder pedestals, specifically an adjustable precast box girder pedestal. Background Technology

[0002] The existing precast box girder pedestals are mostly made by pouring concrete to form a concrete support platform on the precast site, and then installing steel plates on the concrete support platform to ensure the levelness of the bottom surface of the precast box girder pedestal and to prevent damage to the concrete support platform.

[0003] A search revealed patent document CN222156021U, which discloses an adjustable precast box girder platform. The platform includes a base with a limiting groove inside and a lifting mechanism inside. A support mechanism is fixedly connected to the top of the base, and a first steel plate is fixedly connected to the top of the support mechanism. Second steel plates are provided on both sides of the first steel plate, and a third steel plate is provided on the side of the second steel plate away from the first steel plate. Side edges are provided on both sides of the first, second, and third steel plates. This adjustable precast box girder platform, with its support mechanism, allows for connection and adjustment of the platform's length, accommodating the fabrication of box girders of different sizes. The support mechanism, along with the lifting mechanism, ensures more stable installation of the platform, preventing damage to the box girder due to instability and improving work efficiency.

[0004] Precast box girders are a mature construction technology in bridge construction and are widely used in highway bridge construction. In actual construction, there may be precast box girders with different top and bottom slab widths and lengths. Although the box girder platform in the existing technology can be extended in length, the width is fixed. When encountering various types of box girders, it cannot be well adapted. Therefore, an adjustable precast box girder platform is proposed to optimize the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable precast box girder platform that allows for convenient adjustment of its height and width, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An adjustable precast box girder platform includes a fixed base. A telescopic platform is provided on the top surface of the fixed base. The telescopic platform includes two symmetrically arranged foundation beams. A pad is fixedly connected to the opposite side of each foundation beam. The pads connected to the two foundation beams slide alternately and are L-shaped. A reinforcing beam is fixedly connected to the end of each pad away from the foundation beam. A first guide rod is slidably connected through the reinforcing beam at equal intervals. A circular hole is provided on the reinforcing beam for the first guide rod to pass through and slide. Both ends of the first guide rod are fixedly connected to the fixed base. An mounting plate is fixedly connected to the bottom surface of each foundation beam. A linkage drive mechanism is provided between the mounting plate and the fixed base. Bolt holes for side template installation are provided at equal intervals on both the foundation beams and the fixed base. Bolt holes for platform steel plate installation are also provided at equal intervals on the foundation beams. Two sets of bolt holes on the same foundation beam are staggered.

[0007] As a further embodiment of this utility model: the linkage drive mechanism includes a threaded sleeve, a threaded rod, and an intermediate gear.

[0008] As a further embodiment of this utility model: the threaded sleeve is fixedly connected to the inner side of the fixed base, the threaded rod is threadedly connected to the threaded sleeve, one end of the threaded rod rotatably passes through one of the mounting plates, the fixed base is provided with a clearance hole for the threaded rod to pass through, the intermediate gear is rotatably connected to the intermediate rib plate inside the fixed base, the two sides of the intermediate gear are symmetrically meshed and connected to racks, the racks are slidably connected to the corresponding rib plates, the rib plates are provided with slots for the racks to slide through, the racks slide through the fixed base and are fixedly connected to the corresponding mounting plates, the fixed base is provided with a clearance hole for the racks to pass through, and the end of the threaded rod is fixedly connected to a rotating head, which can be rotated by a power tool in conjunction with the rotating head.

[0009] As a further embodiment of this utility model: multiple ribs are provided at equal intervals, and multiple ribs are fixedly connected to the inner wall of the fixed base. The top surface of the rib abuts against the bottom surface of the reinforcing beam. The contact surface between the reinforcing beam and the rib is smooth and slides. The threaded sleeve is fixedly connected to the middle rib through. A cavity for the rotation and installation of the middle gear is provided on the middle rib.

[0010] As a further embodiment of this utility model: each of the mounting plates is fixedly connected with a second guide rod, the second guide rods on the two mounting plates are staggered vertically, the end of the second guide rod away from the mounting plate slides through the fixed base, the fixed base is provided with a round hole for the second guide rod to pass through and slide, and the second guide rod is staggered with the rib plate.

[0011] As a further embodiment of this utility model: both ends of the fixed base are symmetrically fixedly connected with fixed ears, and fixed holes are provided on the fixed ears. A plug-in plate is fixedly connected to the two fixed ears at one end, and a plug-in groove is provided on the two fixed ears at the other end. The plug-in plate corresponds to and fits into the plug-in groove and is inserted into the plug-in groove. A beveled groove is provided on the plug-in plate, and a shrinkage cavity is provided on the side wall of the plug-in groove. A beveled top pin corresponding to and fits into the beveled groove is slidably connected in the shrinkage cavity. The beveled surface of the beveled top pin fits into the beveled surface of the beveled groove. An adjusting bolt is threaded through the beveled top pin. A threaded hole for threaded connection of the adjusting bolt is provided on the beveled top pin. The end of the adjusting bolt is located in the shrinkage cavity to avoid interfering with the insertion of the plug-in plate. The adjusting bolt is rotatably connected to the fixed ear.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model has a telescopic platform on the top surface of the fixed base. The two foundation beams on the telescopic platform can be driven to adjust the spacing through a linkage drive mechanism and an installation plate. During the adjustment of the spacing of the foundation beams, a support plate is formed by pads, which can support the bottom steel plate. The foundation beams are used to fix the bottom steel plate and the side template, thus facilitating the production of precast beams of different widths.

[0013] 2. This utility model uses the rotation of the threaded rod in conjunction with the threaded sleeve to cause the mounting plate on the connecting side to move the foundation beam away from the fixed base. The mounting plate on the other side and the foundation beam move synchronously through the cooperation of the rack and the intermediate gear, thereby facilitating the adjustment of the width of the platform.

[0014] 3. The reinforcing beam of this utility model is guided by the first guide rod and supported by the rib plate. The pad rod is supported by the fixed base, and the mounting plate is slidably guided by the second guide rod, so as to play an anti-deformation effect when the telescopic platform is unfolded.

[0015] 4. The fixed base of this utility model is fixed to the foundation ground by fixing ears and fixing holes. Two adjacent fixed bases can be connected by plug-in plates and plug-in slots to extend the box girder platform and facilitate the use of different length requirements.

[0016] 5. When the plug plate and plug slot of this utility model are plugged in, the inclined top pin is driven to extend out of the inclined slot by adjusting the bolt. The inclined surface of the inclined top pin is pressed against the inclined surface of the inclined slot, which achieves a tensioning effect and increases the tightness of the connection between two adjacent fixed bases. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an adjustable precast box girder platform.

[0018] Figure 2This is a sectional view of an adjustable precast box girder platform.

[0019] Figure 3 This is an internal view of the fixed base in an adjustable precast box girder platform.

[0020] Figure 4 This is a top-view view of the telescopic platform in an adjustable precast box girder platform.

[0021] Figure 5 This is a diagram illustrating an adjustable precast box girder platform with an insert plate.

[0022] Figure 6 This is a diagram illustrating an adjustable precast box girder platform with an interlocking groove.

[0023] Figure 7 This is a cross-sectional view of the connection between the interlocking plate and the interlocking groove in an adjustable precast box girder platform.

[0024] Figure 8 This is a schematic diagram of the template installation for an adjustable precast box girder platform.

[0025] Figure 9 This is a top sectional view of an adjustable precast box girder platform.

[0026] In the diagram: 1. Fixed base; 2. Telescopic platform; 3. Foundation beam; 4. Pad rod; 5. Reinforcing beam; 6. Adjusting bolt; 7. First guide rod; 8. Mounting plate; 9. Threaded sleeve; 10. Threaded rod; 11. Intermediate gear; 12. Rib plate; 13. Rack; 14. Second guide rod; 15. Fixed lug; 16. Insert plate; 17. Insert groove; 18. Angled groove; 19. Contraction chamber; 20. Angled top pin. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-8In this embodiment of the utility model, an adjustable precast box girder platform includes a fixed base 1. The top surface of the fixed base 1 is provided with a telescopic platform 2. The telescopic platform 2 includes two symmetrically arranged foundation beams 3. The opposite sides of the foundation beams 3 are fixedly connected with pad rods 4. The pad rods 4 connected to the two foundation beams 3 slide alternately. The pad rods 4 are L-shaped. The end of the pad rods 4 away from the foundation beams 3 is fixedly connected with a reinforcing beam 5. The reinforcing beams 5 are equidistantly connected with a first guide rod 7. The reinforcing beams 5 have circular holes for the first guide rod 7 to pass through and slide. The two ends of the first guide rod 7 are fixedly connected to the fixed base 1. The bottom surface of the foundation beams 3 is fixedly connected with an installation plate 8. A linkage drive mechanism is provided between the installation plate 8 and the fixed base 1. The foundation beams 3 and the fixed base 1 are equidistantly provided with bolt holes for the installation of side templates. The foundation beams 3 are also equidistantly provided with bolt holes for the installation of the platform steel plate. The two sets of bolt holes on the same foundation beam 3 are staggered.

[0029] A telescopic platform 2 is provided on the top surface of the fixed base 1. The two foundation beams 3 on the telescopic platform 2 can be driven to adjust the spacing through the linkage drive mechanism in conjunction with the mounting plate 8. During the adjustment of the spacing of the foundation beams 3, a support platform is formed by the pad rod 4, which can support the bottom steel plate. The foundation beams 3 are used to fix the bottom steel plate and the side template, which can facilitate the production of precast beams of different widths.

[0030] The linkage drive mechanism includes a threaded sleeve 9, a threaded rod 10, and an intermediate gear 11.

[0031] A threaded sleeve 9 is fixedly connected to the inner side of the fixed base 1. A threaded rod 10 is threadedly connected to the threaded sleeve 9. One end of the threaded rod 10 rotatably passes through one of the mounting plates 8. The fixed base 1 has a clearance hole for the threaded rod 10 to pass through. An intermediate gear 11 is rotatably connected to an intermediate rib plate 12 inside the fixed base 1. The two sides of the intermediate gear 11 are symmetrically meshed with racks 13. The racks 13 are slidably connected to the corresponding rib plates 12. The rib plates 12 have slots for the racks 13 to slide through. After the racks 13 slide through the fixed base 1, they are fixedly connected to the corresponding mounting plates 8. The fixed base 1 has a clearance hole for the racks 13 to pass through. A rotating head is fixedly connected to the end of the threaded rod 10. The threaded rod 10 can be rotated by using a power tool with the rotating head.

[0032] By rotating the threaded rod 10 and engaging the threaded sleeve 9, the mounting plate 8 on the connecting side moves the base beam 3 away from the fixed base 1. The rack 13 and the intermediate gear 11 work together to drive the mounting plate 8 and the base beam 3 on the other side to move synchronously, thus facilitating the adjustment of the width of the platform.

[0033] Multiple ribs 12 are provided at equal intervals, and all ribs 12 are fixedly connected to the inner wall of the fixed base 1. The top surface of the rib 12 abuts against the bottom surface of the reinforcing beam 5. The contact surfaces of the reinforcing beam 5 and the rib 12 slide smoothly. The threaded sleeve 9 is fixedly connected to the intermediate rib 12 through it. A cavity is provided on the intermediate rib 12 for the rotational installation of the intermediate gear 11.

[0034] A second guide rod 14 is fixedly connected to each of the mounting plates 8. The second guide rods 14 on the two mounting plates 8 are staggered vertically. The end of the second guide rod 14 away from the mounting plate 8 slides through the fixed base 1. The fixed base 1 has a round hole for the second guide rod 14 to pass through and slide. The second guide rod 14 is staggered with the rib plate 12.

[0035] The reinforcing beam 5 is guided by the first guide rod 7 and supported by the rib plate 12. The pad rod 4 is supported by the fixed base 1, and the mounting plate 8 is slidably guided by the second guide rod 14, so as to play an anti-deformation effect when the telescopic platform 2 is unfolded.

[0036] Fixed ears 15 are symmetrically fixedly connected to both ends of the fixed base 1. Fixed ears 15 have fixed holes. Two fixed ears 15 at one end are fixedly connected to plug plates 16, and two fixed ears 15 at the other end are fixedly connected to plug grooves 17. Plug plates 16 correspond to and fit into plug grooves 17. Plug plates 16 have beveled grooves 18. A contraction cavity 19 is formed on the side wall of plug groove 17. A beveled top pin 20 corresponding to and fitting the beveled groove 18 is slidably connected in the contraction cavity 19. The beveled surface of the beveled top pin 20 fits the beveled surface of the beveled groove 18. An adjusting bolt 6 is threaded through the beveled top pin 20. A threaded hole for threaded connection of the adjusting bolt 6 is formed on the beveled top pin 20. The end of the adjusting bolt 6 is located in the contraction cavity 19 to avoid interfering with the insertion of the plug plates 16. The adjusting bolt 6 is rotatably connected to the fixed ears 15.

[0037] The fixed base 1 is fixed to the foundation ground by fixing ears 15 and fixing holes. Two adjacent fixed bases 1 can be connected by plug-in plates 16 and plug-in slots 17 to extend the box girder platform and facilitate the use of different length requirements.

[0038] When the plug plate 16 and the plug slot 17 are plugged in, the adjusting bolt 6 drives the inclined top pin 20 to extend out of the inclined slot 18. The inclined surface of the inclined top pin 20 is pressed against the inclined surface of the inclined slot 18, which achieves a tensioning effect and increases the tightness of the connection between the two adjacent fixed bases 1.

[0039] The working principle of this utility model is as follows: In use, the fixed base 1 is fixed to the foundation ground via the fixed lug 15 and the fixed hole. Two adjacent fixed bases 1 can be connected by interlocking plates 16 and interlocking slots 17 to extend the box girder platform. When the interlock plates 16 and interlocking slots 17 are interlocked, the adjusting bolt 6 drives the inclined pin 20 to extend into the inclined slot 18. The inclined surface of the inclined pin 20 presses against the inclined surface of the inclined slot 18, achieving a tensioning effect. When width adjustment is required, the threaded rod 10 is rotated, engaging with the threaded sleeve 9, thereby allowing the mounting plate on the connecting side to... 8 drives the foundation beam 3 away from the fixed base 1. Through the cooperation of the rack 13 and the intermediate gear 11, the mounting plate 8 on the other side and the foundation beam 3 move synchronously, which facilitates the width adjustment of the platform. The two foundation beams 3 on the telescopic platform 2 can be driven to adjust the spacing through the linkage drive mechanism in cooperation with the mounting plate 8. During the spacing adjustment of the foundation beams 3, a support plate is formed by the pad rod 4, which can support the bottom steel plate. The foundation beams 3 are used to fix the bottom steel plate and the side template, which facilitates the production of precast beams of different widths.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable precast box girder platform, comprising a fixed base (1), characterized in that: The top surface of the fixed base (1) is provided with a telescopic platform (2). The telescopic platform (2) includes two symmetrically arranged base beams (3). The opposite sides of the base beams (3) are fixedly connected with pads (4). The pads (4) connected to the two base beams (3) slide in an alternating manner. The pads (4) are L-shaped. The end of the pad (4) away from the base beam (3) is fixedly connected with a reinforcing beam (5). The reinforcing beam (5) is equidistantly connected with a first guide rod (7). The two ends of the first guide rod (7) are fixedly connected to the fixed base (1). The bottom surface of the base beams (3) is fixedly connected with an installation plate (8). The installation plate (8) and the fixed base (1) are provided with a linkage drive mechanism. The base beams (3) and the fixed base (1) are equidistantly provided with bolt holes for side template installation. The base beams (3) are also equidistantly provided with bolt holes for tabletop steel plate installation. The two sets of bolt holes on the same base beam (3) are staggered.

2. The adjustable precast box girder platform according to claim 1, characterized in that: The linkage drive mechanism includes a threaded sleeve (9), a threaded rod (10), and an intermediate gear (11).

3. An adjustable precast box girder platform according to claim 2, characterized in that: The threaded sleeve (9) is fixedly connected to the inner side of the fixed base (1), the threaded rod (10) is threadedly connected to the threaded sleeve (9), one end of the threaded rod (10) rotates through one of the mounting plates (8), the intermediate gear (11) is rotatably connected to the intermediate rib plate (12) in the fixed base (1), the two sides of the intermediate gear (11) are symmetrically meshed with racks (13), the racks (13) are slidably connected to the corresponding rib plate (12), the racks (13) slide through the fixed base (1) and are fixedly connected to the corresponding mounting plate (8), and the end of the threaded rod (10) is fixedly connected to a rotating head.

4. An adjustable precast box girder platform according to claim 3, characterized in that: The ribs (12) are provided at equal intervals. All ribs (12) are fixedly connected to the inner wall of the fixed base (1). The top surface of the ribs (12) abuts against the bottom surface of the reinforcing beam (5). The threaded sleeve (9) is fixedly connected to the middle rib (12). The middle rib (12) has a cavity for the rotational installation of the middle gear (11).

5. An adjustable precast box girder platform according to claim 1, characterized in that: Each of the mounting plates (8) is fixedly connected with a second guide rod (14). The second guide rods (14) on the two mounting plates (8) are staggered vertically. The end of the second guide rod (14) away from the mounting plate (8) slides through the fixed base (1). The second guide rod (14) is staggered with the rib plate (12).

6. An adjustable precast box girder platform according to claim 1, characterized in that: The fixed base (1) has fixed ears (15) symmetrically fixed on both sides. Fixed holes are provided on the fixed ears (15). A plug plate (16) is fixedly connected to the two fixed ears (15) at one end. A plug groove (17) is provided on the two fixed ears (15) at the other end. The plug plate (16) corresponds to and fits the plug groove (17) and is inserted into the plug groove (17). A beveled groove (18) is provided on the plug plate (16). A shrinkage cavity (19) is provided on the side wall of the plug groove (17). A beveled top pin (20) corresponding to and fits the beveled groove (18) is slidably connected in the shrinkage cavity (19). An adjusting bolt (6) is threaded through the beveled top pin (20). The adjusting bolt (6) is rotated through and connected to the fixed ear (15).

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