Fast construction platform for long-span continuous rigid frame bridge construction and operation method thereof

Abstract

The application discloses a kind of quick construction platform for large-span continuous rigid frame bridge construction and its operating method, belong to bridge construction technical field;Including two opposite installation platforms, formwork platform is provided on installation platform, two formwork platforms are connected by connecting device;Formwork platform includes horizontal part and lifting mechanism, the bottom side of horizontal part is provided with vertical part, the bottom side of vertical part is equipped with fixed extension, the bottom side of fixed extension is equipped with adjustable extension mechanism, the bottom side of adjustable extension mechanism is equipped with bottom die fixedly connected with installation platform;The top side of vertical part, fixed extension, adjustable extension mechanism and bottom die has first U-shaped frame, the bottom side of horizontal part, vertical part, fixed extension and adjustable extension mechanism has first U-shaped insertion strip inserted with first U-shaped frame.The application overcomes the problem that the quick construction support platform for large-span continuous rigid frame bridge pier needs to be customized according to the specifications of the pier, and the general performance is poor.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and more specifically, to a rapid construction platform for the construction of long-span continuous rigid frame bridges and its operation method. Background Technology

[0002] In continuous beam bridges, those where the piers and main girder are rigidly integrated are called continuous rigid frame bridges. Continuous rigid frame bridges are a commonly used structural system in the construction of long-span bridges, with typical spans between 100 and 300 meters. When the span exceeds 100 meters, prestressed concrete continuous rigid frame bridges can be considered as a comparable option for continuous beam bridges. Continuous rigid frame bridges combine the stress characteristics of continuous beam bridges and T-shaped rigid frame bridges, with the main girder being a continuous beam body rigidly connected to the piers.

[0003] Currently, long-span continuous rigid frame bridges are mostly constructed using cast-in-place piers and precast beams. During pier construction, appropriate supports are needed to hold the pier molds in place. However, existing supports are slow to dismantle, affecting the demolding efficiency of the pier molds and resulting in low pier construction efficiency, which in turn impacts the construction speed of long-span continuous rigid frame bridges.

[0004] A search revealed that Chinese patent CN218203919U discloses a support structure for the rapid construction of a long-span continuous rigid frame bridge. The structure includes two opposing semi-supports, each composed of a vertical and a horizontal section. A quick-disassembly mechanism is also included, comprising fixing blocks respectively fixed to the front and rear ends of the vertical section. Each fixing block has a mounting hole at one end, into which a telescopic rod is installed. Two abutment plates are fixed to the ends of the telescopic rod, and a compression spring is provided on the outer wall of the telescopic rod. One end of the compression spring is fixed to abutment plate one, and the other end is fixed to abutment plate two. This invention utilizes the properties of compression springs to provide a certain degree of assistance, facilitating the rapid disassembly of the two supports, improving the demolding efficiency of the bridge pier mold, and contributing to accelerating the construction speed of long-span continuous rigid frame bridges.

[0005] However, since there are inevitably height differences on the ground at different locations, the height of each pier needs to be designed in real time according to these differences to ensure that adjacent beams are at the same height, resulting in most piers having different heights. The support platform used in the aforementioned device cannot be adjusted according to the height of the piers, requiring the separate fabrication of support platforms to match each pier. Furthermore, its quick-disassembly mechanism also needs to be customized and adjusted, resulting in poor versatility.

[0006] Therefore, improving the demolding efficiency of pier molds and thus increasing the construction speed of long-span continuous rigid frame bridges is a current challenge. Summary of the Invention

[0007] 1. The technical problem that the invention aims to solve

[0008] The purpose of this invention is to overcome the problem of low demolding efficiency of pier molds for long-span continuous rigid frame bridges in the prior art, and to provide a rapid construction platform for the construction of long-span continuous rigid frame bridges and its operation method.

[0009] 2. Technical Solution

[0010] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0011] The present invention discloses a rapid construction platform for the construction of a long-span continuous rigid frame bridge, comprising two installation platforms arranged opposite each other, wherein a formwork platform is provided on the installation platform, and the two formwork platforms are connected by a connecting device; the formwork platform includes a horizontal part and a lifting mechanism, one end of the lifting mechanism is connected to the installation platform, and the other end of the lifting mechanism is connected to the horizontal part;

[0012] A vertical part is provided on the bottom side of the horizontal part, a fixed extension part is provided on the bottom side of the vertical part, an adjustable extension mechanism is provided on the bottom side of the fixed extension part, and a bottom mold that is fixedly connected to the installation platform is provided on the bottom side of the adjustable extension mechanism.

[0013] The top side of the vertical part, the fixed extension part, the adjustable extension mechanism and the bottom mold has a first U-shaped frame, and the bottom side of the horizontal part, the vertical part, the fixed extension part and the adjustable extension mechanism has a first U-shaped insert that is inserted into the first U-shaped frame.

[0014] Furthermore, the adjustable extension mechanism includes a second U-shaped frame fixedly connected to the first U-shaped frame, a second U-shaped insert slidably connected to the inner wall of the second U-shaped frame, one end of the second U-shaped insert penetrating the second U-shaped frame and fixedly connected to the adjacent first U-shaped insert; a toothed belt is provided inside the second U-shaped insert, a pulley is drivenly connected to the inner side of the toothed belt, a first threaded post is fixedly connected to the bottom side of the pulley, and the other end of the first threaded post penetrating the second U-shaped frame and threadedly connected to the second U-shaped insert.

[0015] Furthermore, the second U-shaped frame has an installation cavity that communicates with the adjacent first U-shaped frame. The toothed belt, pulley, and first threaded post are all disposed in the installation cavity, and one of the pulleys has an adjustment groove.

[0016] Furthermore, the second U-shaped frame includes an indicator component; the indicator component includes transparent glass and an indicator strip, the transparent glass is mounted on the surface of the second U-shaped frame, the transparent glass has uniformly distributed scales, and the indicator strip is mounted on the surface of the second U-shaped insert.

[0017] Furthermore, the connecting device includes several mounting frames and threaded seats. The two horizontal parts, vertical parts, fixed extension parts, second U-shaped frame and the opposite side parts of the bottom mold are respectively fixedly connected to the mounting frames and threaded seats. A worm gear is rotatably connected to the inner wall of the mounting frame. A second threaded post is fixedly connected to the inner side of the worm gear. The other end of the second threaded post is threadedly connected to the adjacent threaded seat. A worm is meshed with the worm gear and rotatably connected to the mounting frame. A connecting assembly is provided between two adjacent worms.

[0018] Furthermore, the connecting assembly includes a connecting seat fixedly connected to one end of the worm, and a connecting block fixedly connected to the adjacent worm is inserted into the inner wall of the connecting seat.

[0019] Furthermore, the lifting mechanism includes a hydraulic station, the output end of which is connected to a first hydraulic cylinder, and a guide seat is provided above the first hydraulic cylinder, the guide seat being connected to the side of the horizontal part.

[0020] Furthermore, the support platform is equipped with an auxiliary device, part of which is located inside the installation platform. The installation platform has a storage cavity. The auxiliary device includes a second rack and two first racks that are slidably connected to the inner wall of the storage cavity. The first racks and the second racks are intersected. The first racks are engaged with toothed rings, and the two toothed rings located at the intersection of the racks are engaged with the second racks.

[0021] Furthermore, the inner side of the gear ring is fixedly connected to an internally threaded tube that is rotatably connected to the storage cavity, the inner side of the internally threaded tube is threadedly connected to a threaded plate, and the bottom side of the threaded plate is fixedly connected to a caster wheel; the second rack is connected to a second hydraulic cylinder, and the second hydraulic cylinder is fixedly connected to and communicates with the hydraulic station.

[0022] The present invention provides an operation method for a rapid construction platform for a long-span continuous rigid frame bridge as described above, comprising the following steps:

[0023] a. Assemble the formwork platform;

[0024] b. Adjust the height of the formwork platform using the lifting mechanism;

[0025] c. The two formwork support platforms are connected and merged;

[0026] d. The two support platforms are split.

[0027] 3. Beneficial effects

[0028] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0029] (1) By setting up a formwork platform, workers can horizontally rotate the prefabricated and matched formwork platform according to the height of the pier using a corresponding number of fixed extension sections and adjustable extension mechanisms of corresponding length. The use of a lifting mechanism allows workers to quickly disassemble and reassemble the formwork platform layout, and to increase or decrease the number of fixed extension sections or adjust the length of the adjustable extension mechanisms as needed. This meets the needs of piers of different heights, eliminating the need to customize formwork platforms of specific specifications based on the pier height, thus improving the versatility of the formwork platform, making it more practical, and accelerating the construction speed of the piers.

[0030] (2) By setting an adjustable extension mechanism, when the needs of the workers cannot be met by adding or removing fixed extension sections, the workers can steplessly adjust the overall height of the formwork platform by adjusting the length of the adjustable extension mechanism, without having to customize fixed extension sections of the corresponding specifications according to the needs. This not only reduces the cost of pier construction, but also reduces the probability of pier construction being slowed down, thus ensuring the construction speed of piers.

[0031] (3) By setting up a connecting device, in which the servo motor drives all the second threaded columns to connect or separate from the threaded seats through the active bevel gear, driven bevel gear, connecting component, worm and worm wheel, the two formwork support platforms can be brought into contact with each other or separated from each other. This not only reduces the difficulty of use for workers, but also reduces the difficulty of demolding the formwork support platform, making it easier for workers to use.

[0032] (4) By setting up an auxiliary device, the second hydraulic cylinder can be extended and retracted via a hydraulic station as needed, allowing the second hydraulic cylinder to simultaneously raise and lower all the casters via the second rack, gear ring, first rack, internal threaded pipe, and threaded plate. This not only makes it more convenient for workers to move the installation platform, but also further shortens the preparation time for pier construction. In addition, when not in use, it allows the installation platform to maintain more stable contact with the ground, making the pier more stable during pouring. Attached Figure Description

[0033] Figure 1 A structural diagram of the platform for rapid construction;

[0034] Figure 2 An exploded view of the formwork platform and connecting device;

[0035] Figure 3 This is a schematic diagram of the adjustable extension mechanism;

[0036] Figure 4 This is a vertical sectional view of the adjustable extension mechanism;

[0037] Figure 5 This is a schematic diagram showing the arrangement of pulleys and threaded rods;

[0038] Figure 6 This is a schematic diagram of the adjustable extension mechanism in the horizontal direction.

[0039] Figure 7 This is a schematic diagram of the connecting device;

[0040] Figure 8 This is a schematic diagram of the internal structure of the connecting device;

[0041] Figure 9 A sectional view of the structure of the connecting device;

[0042] Figure 10 This is a horizontal sectional view of the connecting device;

[0043] Figure 11 An exploded view of the connecting components;

[0044] Figure 12 A vertical sectional view of the mounting platform and auxiliary devices;

[0045] Figure 13 This is a schematic diagram of the auxiliary device.

[0046] Explanation of the labels in the diagram:

[0047] 1. Installation platform; 11. Storage cavity;

[0048] 2. Formwork platform; 21. Horizontal section; 22. Vertical section; 23. Fixed extension section; 24. Adjustable extension mechanism; 241. Second U-shaped frame; 242. Second U-shaped insert; 243. Toothed belt; 244. Pulley; 245. First threaded post; 246. Mounting cavity; 247. Adjustment groove; 248. Indicator assembly; 2481. Transparent glass; 2482. Scale; 2483. Indicator strip; 249. U-shaped rubber sleeve; 25. Bottom mold; 26. First U-shaped frame; 27. First U-shaped insert; 28. First bolt; 29. ​​Lifting mechanism; 291. Hydraulic station; 292. First hydraulic cylinder; 293. Guide seat; 294. Second bolt;

[0049] 3. Connecting device; 31. Mounting frame; 32. Threaded seat; 33. Worm gear; 34. Second threaded post; 35. Worm; 36. Connecting assembly; 361. Connecting seat; 362. Connecting block; 363. Annular guide slope; 37. Driven bevel gear; 38. Driving bevel gear; 39. Servo motor;

[0050] 4. Auxiliary devices; 41. First rack; 42. Second rack; 43. Gear ring; 44. Internally threaded pipe; 45. Threaded plate; 46. Caster wheel; 47. Second hydraulic cylinder; 48. Guide rod. Detailed Implementation

[0051] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0052] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0053] like Figure 1 As shown in the figure, a rapid construction platform for a long-span continuous rigid frame bridge in this embodiment includes two installation platforms 1 arranged opposite each other. Each installation platform 1 is equipped with a formwork support platform 2, and the two formwork support platforms 2 are connected by a connecting device 3. An auxiliary device 4 is installed on the formwork support platform 2, and part of the structure of the auxiliary device 4 extends into the interior of the installation platform 1. The formwork support platform 2 includes a horizontal part 21 and a lifting mechanism 29. One end of the lifting mechanism 29 is connected to the installation platform 1, and the other end of the lifting mechanism 29 is connected to the horizontal part 21.

[0054] The lifting mechanism 29 includes a hydraulic station 291 fixedly connected to the installation platform 1. The output end of the hydraulic station 291 is fixedly connected to and communicates with two first hydraulic cylinders 292. The first hydraulic cylinders 292 are fixedly connected to the installation platform 1 and symmetrically distributed on both sides of the horizontal section 21. The other end of each first hydraulic cylinder 292 is connected to a guide seat 293. Evenly distributed second bolts 294 are inserted into the surface of the guide seat 293. One end of each second bolt 294 passes through the guide seat 293 and is threadedly connected to the horizontal section 21. This allows workers to more easily adjust the height of the formwork platform, reducing the difficulty of adjustment.

[0055] like Figure 2As shown, a vertical part 22 is provided on the bottom side of the horizontal part 21, a fixed extension part 23 is provided on the bottom side of the vertical part 22, an adjustable extension mechanism 24 is provided on the bottom side of the fixed extension part 23, and a bottom mold 25 is provided on the bottom side of the adjustable extension mechanism 24 and fixedly connected to the mounting platform 1; the top side of the vertical part 22, the fixed extension part 23, the adjustable extension mechanism 24 and the bottom mold 25 has a first U-shaped frame 26, and the bottom side of the horizontal part 21, the vertical part 22, the fixed extension part 23 and the adjustable extension mechanism 24 has a first U-shaped insert 27 that is inserted into the adjacent first U-shaped frame 26.

[0056] Preferably, a first bolt 28 is inserted into the surface of the first U-shaped frame 26, and one end of the first bolt 28 passes through the first U-shaped frame 26 and is threadedly connected to the first U-shaped insert 27.

[0057] By setting up a formwork platform, workers can horizontally rotate a prefabricated, matching formwork platform according to the height of the bridge piers, using a corresponding number of fixed extension sections and adjustable extension mechanisms of appropriate length. Furthermore, the use of a lifting mechanism allows workers to quickly disassemble and reassemble the formwork platform layout, enabling them to add or remove fixed extension sections or adjust the length of adjustable extension mechanisms as needed. This meets the requirements of bridge piers of different heights, eliminating the need to customize formwork platforms to specific pier heights, thus improving the versatility of the formwork platform and making it more practical.

[0058] like Figure 3 As shown, the adjustable extension mechanism 24 includes a second U-shaped frame 241 fixedly connected to the side of the first U-shaped frame 26. A second U-shaped insert 242 is slidably connected to the inner wall of the second U-shaped frame 241. One end of the second U-shaped insert 242 passes through the second U-shaped frame 241 and is fixedly connected to the adjacent first U-shaped insert 27. A toothed belt 243 is provided inside the second U-shaped insert 242. The inner side of the toothed belt 243 is driven by evenly distributed pulleys 244. A first threaded post 245 is fixedly connected to the bottom side of the pulleys 244. The other end of the first threaded post 245 passes through the second U-shaped frame 241 and is threadedly connected to the second U-shaped insert 242.

[0059] By incorporating an adjustable extension mechanism, when the needs of workers cannot be met by simply adding or removing fixed extension sections, the overall height of the formwork platform can be infinitely adjusted by changing the length of the adjustable extension mechanism, eliminating the need to customize fixed extension sections to specific specifications. This not only reduces the cost of pier construction but also decreases the probability of delays in pier construction, thus ensuring the construction speed of the piers.

[0060] Furthermore, such as Figure 4 and Figure 5As shown, the second U-shaped frame 241 has a mounting cavity 246 communicating with the adjacent first U-shaped frame 26. The toothed belt 243, pulley 244, and first threaded post 245 are all disposed within the mounting cavity 246. The inner wall of the mounting cavity 246 is in contact with the surface of the toothed belt 243. Both ends of the pulley 244 are rotatably connected to the mounting cavity 246. The other end of the first threaded post 245 extends to the outside of the mounting cavity 246. One of the pulleys 244 has an adjustment groove 247 with a cross-sectional shape of a regular hexagon. The above structure ensures a stable connection between the toothed belt and the pulley, preventing the probability of the toothed belt "skipping teeth," and thus ensuring that the length of the adjustable extension mechanism can be adjusted normally.

[0061] like Figure 6 As shown, an indicator component 248 is embedded in the surface of the second U-shaped frame 241 and fixedly connected to the second U-shaped insert 242; wherein, the indicator component 248 includes a transparent glass 2481 and an indicator strip 2483. The transparent glass 2481 is embedded in the surface of the second U-shaped frame 241 and has uniformly distributed scales 2482. The indicator strip 2483 is embedded in the surface of the second U-shaped insert 242 and is set at the same height as the adjacent scales 2482.

[0062] When the staff adjusts the position of the second U-shaped insert 242, the second U-shaped insert 242 drives the indicator bar 2483 to move. The staff can calculate the moving distance of the second U-shaped insert 242 according to the scale 2482 indicated by the indicator bar 2483.

[0063] A U-shaped rubber sleeve 249 is fixedly connected to the bottom side of the second U-shaped frame 241. The other side of the U-shaped rubber sleeve 249 is fixedly connected to the adjacent first U-shaped insert 27. The second U-shaped insert 242 is disposed inside the U-shaped rubber sleeve 249. Without affecting the normal movement of the second U-shaped insert, this allows the second U-shaped insert to remain flush with the second U-shaped frame, reducing the probability of gaps between them.

[0064] like Figures 7-10 As shown, the connecting device 3 includes several mounting frames 31 and threaded seats 32. The two horizontal parts 21, the vertical part 22, the fixed extension part 23, the second U-shaped frame 241, and the opposite sides of the bottom mold 25 are connected or separated by the mounting frames 31 and threaded seats 32. A worm gear 33 is rotatably connected to the inner wall of the mounting frame 31. A second threaded post 34 is fixedly connected to the inner side of the worm gear 33. The other end of the second threaded post 34 is threadedly connected to the adjacent threaded seat 32. A worm 35 is meshed with the worm gear 33 and rotatably connected to the mounting frame 31. A connecting assembly 36 is provided between two adjacent worms 35.

[0065] like Figure 11As shown, the connecting assembly 36 includes a connecting seat 361 fixedly connected to one end of the worm 35. A connecting block 362 fixedly connected to the adjacent worm 35 is inserted into the inner wall of the connecting seat 361. The cross-sectional shape of the inner wall of the connecting seat 361 and the surface of the connecting block 362 is a matching gear shape. One end of the connecting seat 361 is rounded, and the other end of the connecting seat 361 is provided with an annular guide slope 363.

[0066] By setting up the connecting components, the connecting seat can automatically connect with the connecting block as the worm gear is driven from top to bottom by the formwork platform and moves closer to the lower worm gear. This ensures that the lower worm gear can synchronously transmit power to the upper worm gear through the connecting components. Furthermore, the design of rounded corners and annular guide slope on the other end of the connecting seat increases the success rate of the connection between the connecting seat and the connecting block and reduces the difficulty of docking for workers.

[0067] The other end of the worm gear 35 closest to the mounting platform 1 is fixedly connected to a driven bevel gear 37, which is meshed with a driving bevel gear 38. The driving bevel gear 38 is fixedly connected to a servo motor 39 that is fixedly connected to the mounting platform 1.

[0068] The worm gear 35, corresponding to the second U-shaped frame 241, has a rectangular groove at its bottom. A rectangular rod is slidably connected to the inner wall of the rectangular groove. One end of the rectangular rod passes through the rectangular groove and is fixedly connected to the adjacent connecting seat 361. The adjacent connecting seat 361 is rotatably connected to the surface of the first U-shaped insert 27, which is fixedly connected to the second U-shaped insert 242. A rubber frame that contacts the adjacent mounting frame 31 is fixedly connected to the bottom of the mounting frame 31, and the rectangular rod is located on the inner side of the rubber frame.

[0069] When the second U-shaped insert 242 moves the first U-shaped insert 27 connected to it, the first U-shaped insert 27 moves the connecting seat 361 connected to it. The connecting seat 361 causes the rectangular rod to slide on the inner wall of the rectangular groove. When the worm 35 drives the rectangular rod to rotate through the connecting assembly 36, the rectangular rod drives the adjacent worm 35 to rotate through the rectangular groove. This ensures that the adjacent connecting seats 361 and the adjacent connecting blocks 362 can be stably connected without affecting the normal extension and retraction of the adjustable extension mechanism 24, and that the two adjacent worms 35 can be stably transmitted through the connecting assembly 36, thus ensuring that the entire connecting device 3 can operate normally.

[0070] By setting up a connection device, the operator only needs to rotate the servo motor, which can then drive all the second threaded columns to connect or separate from the threaded seats simultaneously through the active bevel gear, driven bevel gear, connecting component, worm gear, and worm wheel. This allows the two formwork platforms to be brought together or separated, which not only reduces the difficulty of operation for the operator but also reduces the difficulty of demolding the formwork platforms, making it easier for the operator to use.

[0071] like Figure 12 and Figure 13 As shown, the installation platform 1 has a storage cavity 11. The auxiliary device 4 includes two first racks 41 and a second rack 42. Both the first racks 41 and the second rack 42 are slidably connected to the inner wall of the storage cavity 11, and the first racks 41 and the second racks 42 are intersected. One end of the first rack 41 is engaged with a uniformly distributed toothed ring 43, and the two toothed rings 43 located at the intersection of the racks are engaged with the second rack 42.

[0072] Specifically, the inner side of the gear ring 43 is fixedly connected to an internally threaded tube 44 that is rotatably connected to the storage cavity 11. The inner side of the internally threaded tube 44 is threadedly connected to a threaded plate 45. One end of the threaded plate 45 is fixedly connected to a universal wheel 46. One end of the second gear rack 42 is fixedly connected to a second hydraulic cylinder 47. The other end of the second hydraulic cylinder 47 passes through the storage cavity 11 and the mounting platform 1 in sequence and is fixedly connected to and communicates with the hydraulic station 291.

[0073] In addition, a guide rod 48 is inserted inside the threaded plate 45. Both ends of the guide rod 48 pass through the threaded plate 45 and are fixedly connected to the storage cavity 11. This can prevent the threaded plate from rotating with the internal threaded tube, so as to ensure that the caster wheel can be raised and lowered stably.

[0074] When the operator needs to move the installation platform 1, the operator can extend the second hydraulic cylinder 47 via the hydraulic station 291. The second hydraulic cylinder 47 drives the second rack 42 to move, and the second rack 42 simultaneously drives the two connected gear rings 43 to rotate. The gear rings 43 drive the first rack 41 connected to move, and the first rack 41 drives the other gear rings 43 to rotate synchronously. The gear rings 43 drive the internal threaded tube 44 to rotate, and the internal threaded tube 44 drives the threaded plate 45 to move spirally downward along the guide rod 48. The threaded plate 45 drives the universal wheel 46 to move downward until the universal wheel 46 passes through the storage cavity 11 and supports the installation platform 1.

[0075] At this point, the staff can quickly move the installation platform 1 using the casters 46. When the installation platform 1 does not need to be moved, the staff can simply shorten the second hydraulic cylinder 47 using the hydraulic station 291 to retract the casters 46 back into the storage cavity 11 and make the installation platform 1 stick tightly to the ground.

[0076] The above structure not only makes it easier for workers to move the installation platform, further shortening the preparation time for pier construction, but also allows the installation platform to make more stable contact with the ground when not in use, making the pier more stable during pouring.

[0077] Based on the structure of the rapid construction platform for long-span continuous rigid frame bridges described above, this embodiment also provides an operation method, specifically including the following steps:

[0078] a. Assemble the formwork platform 2

[0079] Workers remove the horizontal section 21, vertical section 22, and a corresponding number of fixed extension sections 23 and adjustable extension mechanisms 24 according to the height of the bridge pier. Then, workers insert the tool that matches the adjustment groove 247 into the adjustment groove 247 and rotate the adjustment groove 247 in the corresponding direction. The adjustment groove 247 drives the pulley 244 connected to it to rotate. The pulley 244 drives the toothed belt 243 to drive along the inner wall of the mounting cavity 246. The toothed belt 243 simultaneously drives all other pulleys 244 to rotate synchronously. The pulley 244 drives the first threaded post 245 connected to it to rotate. The first threaded post 245 drives the second U-shaped insert 242 to slide along the inner wall of the second U-shaped frame 241 through rotation. The second U-shaped insert 242 drives the first U-shaped insert 27 connected to it to move until the distance between the first U-shaped frame 26 and the first U-shaped insert 27 is adjusted to match the requirements.

[0080] Then, the workers sequentially connect the horizontal part 21, the vertical part 22, the corresponding number of fixed extension parts 23, the adjustable extension mechanism 24, and the bottom mold 25 from top to bottom through the first U-shaped frame 26 and the first U-shaped insert 27. Then, the first bolt 28 passes through the first U-shaped frame 26 and is firmly connected to the first U-shaped insert 27. At this point, the workers have completed the assembly of one formwork platform 2. The workers then assemble the other formwork platform 2 according to the same steps.

[0081] b. Adjust the height of the formwork support platform 2 using the lifting mechanism 29.

[0082] When the staff needs to adjust the height of the formwork platform 2, the staff first presses the guide seat 293 against the corresponding position of the horizontal part 21, and then the second bolt 294 passes through the guide seat 293 and is threadedly connected to the horizontal part 21, so that the guide seat 293 and the horizontal part 21 are firmly connected together.

[0083] Then, the workers removed all the first bolts 28 from the surface of the first U-shaped frame 26 connected to the bottom mold 25, so that the first U-shaped frame 26 and the first U-shaped insert 27 lost resistance. Then, the workers simultaneously controlled the two first hydraulic cylinders 292 to extend upward through the hydraulic station 291. The first hydraulic cylinders 292 drove the guide seat 293 to rise. The guide seat 293 drove the horizontal part 21 to rise through the second bolt 294. The horizontal part 21 drove the vertical part 22, the corresponding number of fixed extension parts 23 and the adjustable extension mechanism 24 to rise through the first U-shaped frame 26, the first U-shaped insert 27 and the first bolt 28, until the distance between the adjustable extension mechanism 24 and the bottom mold 25 was adjusted to be convenient for the workers to operate.

[0084] At this point, the staff can increase or decrease the number of fixed extension parts 23 and adjust the length of adjustable extension mechanism 24 according to the installation process of the above-mentioned formwork platform 2. After the number of fixed extension parts 23 or the length of adjustable extension mechanism 24 are adjusted, the staff can control the first hydraulic cylinder 292 to shorten through the hydraulic station 291. The first hydraulic cylinder 292 drives the horizontal part 21 to move down through the guide seat 293 and the second bolt 294. The horizontal part 21 simultaneously drives the vertical part 22, the corresponding number of fixed extension parts 23 and adjustable extension mechanism 24 to move down until the first U-shaped insert 27 at the bottom of the adjustable extension mechanism 24 is inserted into the first U-shaped frame 26 of the bottom mold 25. Then the staff can thread the first bolt 28 through the first U-shaped frame 26 and connect it to the first U-shaped insert 27. At this point, the height adjustment operation of the formwork platform 2 is completed.

[0085] c. Connect and merge the two formwork platforms 2

[0086] After both formwork platforms 2 are assembled, the workers place the two installation platforms 1 symmetrically on both sides of the pier pouring site, and then move the two installation platforms 1 towards each other. At this time, the two installation platforms 1 drive the two formwork platforms 2 to move closer to each other, and the two formwork platforms 2 drive the two connecting devices 3 to move closer to each other, until the second threaded column 34 is connected with the corresponding threaded seat 32.

[0087] Then, the staff simultaneously start two servo motors 39. The servo motors 39 drive the active bevel gear 38 to rotate, the active bevel gear 38 drives the driven bevel gear 37 to rotate, the driven bevel gear 37 drives the worm 35 to rotate, and the worm 35 drives the adjacent worm 35 to rotate through the connecting component 36. During the rotation of the worm 35, the worm wheel 33 rotates synchronously, and the worm wheel 33 drives the second threaded column 34 to rotate into the threaded seat 32.

[0088] At this time, the second threaded column 34 drives the mounting frame 31 to approach the threaded seat 32, and the mounting frame 31 drives the formwork platform 2 to approach the other formwork platform 2. When the mounting frame 31 and the threaded seat 32 are in contact, the two formwork platforms 2 are tightly in contact, and then the workers can carry out normal pouring work between the two formwork platforms 2.

[0089] d. Split the two formwork platforms 2

[0090] When the workers need to disassemble the two support platforms 2, they only need to control the two servo motors 39 to move in opposite directions at the same time. At this time, the servo motors 39 drive the active bevel gear 38 to rotate in the opposite direction, the active bevel gear 38 drives the driven bevel gear 37 to rotate in the opposite direction, the driven bevel gear 37 drives the worm 35 to rotate in the opposite direction, and the worm 35 drives the adjacent worm 35 to rotate in the opposite direction through the connecting component 36. During the rotation, the worm 35 drives the worm wheel 33 to rotate in the opposite direction, and the worm wheel 33 drives the second threaded column 34 to rotate outward of the threaded seat 32.

[0091] At this time, the second threaded column 34 drives the mounting frame 31 away from the threaded seat 32, and the mounting frame 31 drives the formwork platform 2 away from the other formwork platform 2 and separates it from the inner formwork until the second threaded column 34 is completely separated from the threaded seat 32. At this time, the workers can move the formwork platform 2 to the next pier pouring site through the mounting platform 1.

[0092] In this embodiment, workers can rotate the prefabricated matching formwork platform 2 horizontally according to the height of the bridge pier using a corresponding number of fixed extension sections 23 and an adjustable extension mechanism 24 of a corresponding length. The design of the lifting mechanism 29 allows workers to quickly disassemble the layout of the formwork platform 2, and to increase or decrease the number of fixed extension sections 23 or adjust the length of the adjustable extension mechanism 24 as needed. This can meet the needs of bridge piers of different heights, eliminating the need to customize formwork platforms 2 of corresponding specifications according to the height of the bridge piers, thereby improving the versatility of the formwork platform 2 and making it more practical.

[0093] It should be noted that the hydraulic station 291, the first hydraulic cylinder 292, the servo motor 39, and the second hydraulic cylinder 47 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the hydraulic station 291, the first hydraulic cylinder 292, the servo motor 39, and the second hydraulic cylinder 47 can be powered by the built-in power supply or by the mains power supply. The specific power supply method is selected according to the situation and will not be elaborated here.

[0094] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited to this. To avoid repetition, repeated content in each embodiment has been omitted, but this should not be construed as meaning that the corresponding embodiment does not include features from other embodiments. Features that cooperate with each other in different embodiments can also be combined with each other. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rapid construction platform for building long-span continuous rigid frame bridges, characterized in that, It includes two installation platforms (1) arranged opposite each other, and a formwork support platform (2) is provided on the installation platform (1). The two formwork support platforms (2) are connected by a connecting device (3). The formwork support platform (2) includes a horizontal part (21) and a lifting mechanism (29). One end of the lifting mechanism (29) is connected to the installation platform (1), and the other end of the lifting mechanism (29) is connected to the horizontal part (21). A vertical part (22) is provided on the bottom side of the horizontal part (21), a fixed extension part (23) is provided on the bottom side of the vertical part (22), an adjustable extension mechanism (24) is provided on the bottom side of the fixed extension part (23), and a bottom mold (25) is fixedly connected to the installation platform (1) on the bottom side of the adjustable extension mechanism (24). The top side of the vertical part (22), the fixed extension part (23), the adjustable extension mechanism (24) and the bottom mold (25) has a first U-shaped frame (26), and the bottom side of the horizontal part (21), the vertical part (22), the fixed extension part (23) and the adjustable extension mechanism (24) has a first U-shaped insert (27) that is inserted into the first U-shaped frame (26). The adjustable extension mechanism (24) includes a second U-shaped frame (241) fixedly connected to the first U-shaped frame (26). A second U-shaped insert (242) is slidably connected to the inner wall of the second U-shaped frame (241). One end of the second U-shaped insert (242) passes through the second U-shaped frame (241) and is fixedly connected to the adjacent first U-shaped insert (27). A toothed belt (243) is provided inside the second U-shaped insert (242). A pulley (244) is drivenly connected to the inner side of the toothed belt (243). A first threaded post (245) is fixedly connected to the bottom side of the pulley (244). The other end of the first threaded post (245) passes through the second U-shaped frame (241) and is threadedly connected to the second U-shaped insert (242).

2. The rapid construction platform for long-span continuous rigid frame bridges according to claim 1, characterized in that, The second U-shaped frame (241) has an installation cavity (246) that communicates with the adjacent first U-shaped frame (26). The toothed belt (243), pulley (244) and first threaded post (245) are all located in the installation cavity (246), and one of the pulleys (244) has an adjustment groove (247).

3. The rapid construction platform for long-span continuous rigid frame bridges according to claim 1, characterized in that, The second U-shaped frame (241) includes an indicator component (248); the indicator component (248) includes a transparent glass (2481) and an indicator strip (2483), the transparent glass (2481) is mounted on the surface of the second U-shaped frame (241), the transparent glass (2481) is provided with uniformly distributed scales (2482), and the indicator strip (2483) is mounted on the surface of the second U-shaped insert (242).

4. The rapid construction platform for long-span continuous rigid frame bridges according to claim 1, characterized in that, The connecting device (3) includes several mounting frames (31) and threaded seats (32). The two horizontal parts (21), vertical parts (22), fixed extension parts (23), second U-shaped frame (241) and bottom mold (25) are respectively fixedly connected to the mounting frames (31) and threaded seats (32). The inner wall of the mounting frame (31) is rotatably connected to a worm gear (33). The inner side of the worm gear (33) is fixedly connected to a second threaded post (34). The other end of the second threaded post (34) is threadedly connected to the adjacent threaded seat (32). The worm gear (33) is meshed with a worm (35) rotatably connected to the mounting frame (31). A connecting assembly (36) is provided between two adjacent worms (35).

5. The rapid construction platform for long-span continuous rigid frame bridges according to claim 4, characterized in that, The connecting assembly (36) includes a connecting seat (361) fixedly connected to one end of the worm (35), and a connecting block (362) fixedly connected to the adjacent worm (35) is inserted into the inner wall of the connecting seat (361).

6. The rapid construction platform for long-span continuous rigid frame bridges according to claim 1, characterized in that, The lifting mechanism (29) includes a hydraulic station (291), the output end of which is connected to a first hydraulic cylinder (292), and a guide seat (293) is provided above the first hydraulic cylinder (292), the guide seat (293) being connected to the side of the horizontal part (21).

7. The rapid construction platform for long-span continuous rigid frame bridges according to claim 6, characterized in that, The support platform (2) is equipped with an auxiliary device (4). Part of the structure of the auxiliary device (4) is located inside the installation platform (1). The installation platform (1) has a storage cavity (11). The auxiliary device (4) includes a second rack (42) and two first racks (41) that are slidably connected to the inner wall of the storage cavity (11). The first racks (41) and the second racks (42) are intersected. The first racks (41) are meshed with toothed rings (43). The two toothed rings (43) located at the intersection of the racks are meshed with the second racks (42).

8. The rapid construction platform for long-span continuous rigid frame bridges according to claim 7, characterized in that, The inner side of the toothed ring (43) is fixedly connected to an internally threaded tube (44) that is rotatably connected to the storage cavity (11). The inner side of the internally threaded tube (44) is threadedly connected to a threaded plate (45). The bottom side of the threaded plate (45) is fixedly connected to a universal wheel (46). The second rack (42) is connected to a second hydraulic cylinder (47). The second hydraulic cylinder (47) is fixedly connected to and communicates with the hydraulic station (291).

9. A method for operating a rapid construction platform for a long-span continuous rigid frame bridge as described in any one of claims 1-8, characterized in that, Includes the following steps: a. Assemble the formwork platform (2); b. Adjust the height of the formwork platform (2) using the lifting mechanism (29); c. The two formwork platforms (2) are connected and merged; d. The two support platforms (2) are split.

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