Bridge swivel assembly type hydraulic supporting foot and using method

Abstract

The invention discloses a bridge swivel assembly type hydraulic supporting foot, a using method and a hydraulic jack, which realize the automatic adjustment of the height of the supporting foot, can play a good buffering role on the impact during the falling of a beam body, and can effectively improve the stability of a bridge superstructure in the construction process. Effective contact between the sliding assembly and the surface of the sliding way is achieved under the action of the hydraulic jack, elevation change and foundation tiny deformation in construction can be flexibly adapted without cutting or elevating the structure, synchronous action and stress balance of multiple supporting feet can be achieved through hydraulic control, the defect that the stress state of the supporting feet is not clear is overcome, and the construction efficiency is improved. The overall stability of a swivel structure is enhanced, a stable sliding friction pair can be provided through combination of sliding shoes and sliding ways in the sliding assemblies and cooperation of the stability of hydraulic drive, and potential safety hazards caused by fluctuation of friction resistance of traditional supporting feet are reduced, a positioning ring is arranged, and the lower end of a hydraulic jack is embedded into the positioning ring, so that the stability of the supporting feet is improved. And the working stability of the hydraulic jack is improved.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology and relates to a prefabricated hydraulic support foot for bridge rotation and its usage method. Background Technology

[0002] When constructing bridges that span existing railway or highway lines, the bridge rotation method is widely used due to its advantages such as strong adaptability, high construction quality, and fast construction speed. The principle involves pre-casting or assembling the bridge structure at a location not aligned with the design axis, then rotating the entire bridge to the design position using a specially designed rotation system, ultimately achieving system conversion and closure. During bridge rotation construction, the support legs are crucial devices for ensuring the rotated structure has good anti-overturning stability, and they play an important role in each stage of construction: before rotation, the support legs serve as temporary supports to assist in adjusting the structural elevation and maintaining overall stability; after rotation and before system conversion, they act as temporary supports to safely transfer the load to the foundation.

[0003] Traditional support structures use steel pipes filled with concrete as the main body, with steel plates welded to the bottom and in contact with friction pairs on an annular track. This type of support is difficult to adjust in terms of height; when the height does not meet design requirements, it needs to be recut or raised, and it cannot accommodate minor settlement or deformation of the foundation that may occur during rotation. The stress state of each support is unclear, and it cannot provide effective support when there are manufacturing or installation errors. The frictional resistance between the support and the track is unstable, posing potential safety hazards. Furthermore, the support and the rotating structure are usually rigidly connected, making repair and replacement complex and costly after damage. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art, such as the difficulty in fixing and adjusting the height of the support legs, the need to recut or raise them when the height does not meet the design requirements, the inability to adapt to the slight settlement or deformation of the foundation that may occur during the rotation process, the inability to provide effective support when there are manufacturing or installation errors in the support legs, and the unstable frictional resistance between the support legs and the slide rail, which poses safety hazards. The invention provides a prefabricated hydraulic support leg for bridge rotation and its usage method.

[0005] To achieve the above objectives, the present invention employs the following technical solution: A bridge rotation assembly hydraulic support foot includes a connecting component and a support foot component connected sequentially from top to bottom. The support foot component is equipped with a hydraulic jack, and the lower end of the hydraulic jack is connected to a sliding component. The hydraulic jack can drive the connecting component and the support foot component to move synchronously axially. The sliding assembly includes a positioning ring, the lower end of the hydraulic jack is embedded inside the positioning ring, and a sliding shoe is provided at the lower end of the positioning ring. During construction, a sliding track corresponding to the sliding shoe is provided on the base to be constructed.

[0006] A further improvement of the present invention is that: The positioning ring is provided with a positioning boss inside, and the lower end of the hydraulic jack is provided with a positioning groove corresponding to the positioning boss.

[0007] The support leg assembly includes a support leg sleeve, the upper end of which is connected to a support leg top plate, and the support leg top plate is connected to a connecting assembly; The hydraulic jack is located inside the support foot casing. The lower end of the support foot casing is provided with an annular sealing plate with a through hole. The hydraulic jack includes a cylinder with a piston inside. The lower end of the piston is connected to a pressure plate, which is embedded in a positioning ring. The piston passes through the through hole in the annular sealing plate. The cylinder is located inside the support foot casing.

[0008] The inner wall of the support foot sleeve is provided with a positioning strip, and the side wall of the oil cylinder is provided with a positioning groove that corresponds to and cooperates with the positioning strip.

[0009] The side wall of the support foot sleeve has a pipeline channel corresponding to the pipeline interface on the oil cylinder.

[0010] The connecting assembly includes an anchor cylinder, inside which a cross anchor plate is provided, and on the outer wall of the cross anchor cylinder a vertical anchor plate is provided. The lower end of the anchor cylinder is connected to a pre-embedded connecting plate, which is connected to a support foot assembly.

[0011] The pre-embedded connecting plate is provided with a bolt sleeve, which is connected to the support leg assembly.

[0012] The sliding shoe is an arc-shaped steel plate. During construction, there are gaps between the two ends of the sliding shoe and the slide track, and the middle part of the sliding shoe contacts the end face of the slide track.

[0013] Two positioning rings are spaced apart on the skate, and the two positioning rings are connected by an arc-shaped rib.

[0014] A method for using a prefabricated hydraulic support for bridge rotation includes the following steps: On the foundation to be constructed, ball joints, slides and traction equipment are pre-installed; Erect a turntable template on the ball joint, embed several connecting components circumferentially into the turntable template, install the support leg assembly to the lower end of the connecting components; assemble the hydraulic jack and sliding assembly; Start the hydraulic jacks to gradually make the sliding shoe contact the slide, pour the upper turntable template to obtain the upper turntable, connect the traction equipment to the upper turntable, and pour the bridge superstructure. After the pouring is completed, the hydraulic jacks are started to lift all the hydraulic jacks synchronously. After reaching the preset support state, the traction equipment is driven. The traction equipment applies circumferential driving force to the upper turntable. With the cooperation of several slippers and ball joints at the bottom, the upper turntable begins to rotate. At this time, the rotation construction is carried out. During the initial stage of the rotation construction, all hydraulic jacks retract synchronously. At this time, the ball joint is the main support, and the circumferentially distributed hydraulic support feet are the auxiliary support. After the initial construction is completed, all hydraulic jacks lift synchronously. At this time, the ball joint is the auxiliary support, and the circumferentially distributed hydraulic support feet are the main support. After the rotation construction is completed, the fixed connection of the skid and the track is established. A permanent bridge support is installed between the upper turntable and the base. All hydraulic jacks retract synchronously, and the upper turntable gradually falls onto the permanent bridge support. Remove the hydraulic support legs and proceed with subsequent construction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a prefabricated hydraulic support for bridge rotation. The support assembly incorporates hydraulic jacks, enabling autonomous height adjustment and effectively buffering the impact of the falling bridge beam. This significantly improves the stability of the bridge superstructure during construction. The hydraulic jacks ensure effective contact between the sliding component and the track surface, allowing for flexible adaptation to elevation changes and minor foundation deformations during construction without requiring structural cutting or padding. Hydraulic control enables simultaneous movement and balanced force distribution across multiple supports, overcoming the drawback of unclear stress states and enhancing the overall stability of the rotating structure. The combination of the sliding shoe and track within the sliding component, combined with the smoothness of hydraulic drive, provides a stable sliding friction pair, reducing safety hazards caused by frictional resistance fluctuations in traditional supports. Furthermore, a positioning ring is incorporated, with the lower end of the hydraulic jack embedded within it, further enhancing stability during operation and preventing potential safety issues.

[0016] Furthermore, in this invention, the positioning boss and the positioning groove cooperate to improve the stability of the hydraulic jack during operation.

[0017] Furthermore, in this invention, a positioning strip is provided on the inner wall of the support foot casing. The positioning strip cooperates with the positioning groove, which can effectively strengthen the inner wall of the casing on the one hand, and limit and connect the built-in hydraulic jack on the other hand, preventing the jack from rotating relative to the support foot during installation and rotation construction, and further enhancing the cooperative force-bearing performance of the support foot assembly and the hydraulic jack.

[0018] Furthermore, in this invention, a pipeline channel corresponding to the pipeline interface on the hydraulic cylinder is opened on the side wall of the support foot sleeve, which facilitates the installation of the hydraulic jack.

[0019] This invention also discloses a method for using prefabricated hydraulic support legs for bridge rotation. During construction, the support height is adjusted by using the "synchronous lifting" and "synchronous retraction" of hydraulic jacks according to the needs of different stages. In the early stage of rotation, the hydraulic support legs are synchronously retracted, with the ball joint bearing as the main load-bearing component, which reduces the starting friction resistance and makes the rotation smooth. In the final stage of rotation, the hydraulic support legs are synchronously lifted and converted into the main load-bearing components, thereby realizing the transition from continuous rotation to precise inching and fine adjustment. After the rotation is in place, the upper structure is smoothly placed on the permanent support by the synchronous retraction of the hydraulic jacks, realizing a smooth transition from a temporary support system to a permanent support system. This avoids sudden changes in structural internal forces and elevation during the system transition. It can flexibly adapt to elevation changes and minor foundation deformations during construction without cutting or raising the structure, improving the drawback of unclear stress state of the support legs and enhancing the overall stability of the rotating structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the connection component structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the support leg assembly structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the sliding component structure of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation of the hydraulic jack of the present invention.

[0026] Figure 6 This is a front view of the bridge rotation system layout of the present invention.

[0027] Figure 7 This is a top view of the bridge rotation system layout of the present invention.

[0028] Wherein: 1-Connecting assembly; 11-Anchor cylinder; 111-Cross anchor plate; 112-Vertical anchor plate; 113-First stiffening rib; 12-Embedded connecting plate; 121-Bolt sleeve; 122-First connecting bolt; 2-Support assembly; 21-Support top plate; 22-Support sleeve; 23-Annular sealing plate; 211-Second connecting bolt; 221-Second stiffening rib; 222-Pipeline channel; 223-Positioning strip; 3-Jack; 31-Hydraulic cylinder; 32-Piston ; 33-Pressure plate; 311-Positioning groove; 312-Pipeline connector; 331-Cross groove; 332-Second threaded hole; 4-Sliding assembly; 41-Slipper; 42-Positioning ring; 43-Positioning boss; 44-Arc-shaped rib; 411-PTFE plate; 5-Third connecting bolt; 6-Fourth connecting bolt; 7-Fifth connecting bolt; 8-Upper rotating structure; 9-Upper turntable; 10-Traction equipment; 13-Slide rail; 14-Pier; 15-Spherical hinge. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0035] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1 to 7 This invention discloses a prefabricated hydraulic support foot for bridge rotation. The support foot adopts a prefabricated structure and integrates a hydraulic system, which can effectively support the upper rotating structure and has multiple functions such as temporary support, structural weighing and system conversion, effectively improving the safety and stability of the rotating structure.

[0036] Example 1 like Figure 1 As shown, a bridge rotation prefabricated hydraulic support includes a connecting component 1, a support component 2, a hydraulic jack 3, and a sliding component 4. The connecting component 1 is embedded in the upper turntable, and the embedded connecting plate 12 is flush with the bottom surface of the upper turntable. The hydraulic jack 3 is located inside the support sleeve 22 and is connected to the support component 2 through an annular sealing plate 23 and a fourth connecting bolt 6 to form the support body. The support body and the connecting component 1 are connected by a third connecting bolt 5. The preload applied to each bolt is the same, which can make the device more evenly stressed. The hydraulic jack 3 is connected to the sliding component 4 through a fifth connecting bolt 7. The support component 2 directly bears the self-weight load of the upper rotating structure 8 and transfers the load to the lower structure through the sliding component 4.

[0037] like Figure 1 and Figure 2 As shown, the anchor cylinder 11, the cross anchor plate 111, and the vertical anchor plate 112 are welded together to form an anchoring structure, which is then connected to the pre-embedded connecting plate 12 by the first connecting bolt 122 to form the main body of the connecting assembly 1. Specifically: The center of the cross anchor plate 111 coincides with that of the anchor tube 11, and the vertical anchor plate 112 and the first stiffening rib 113 are centrally symmetrically distributed on the outer wall of the anchor tube 11 to strengthen the anchor tube 11. Furthermore, a bolt sleeve 121 is welded to the upper surface of the pre-embedded connecting plate 12. The bolt sleeve 121 can be matched with the third connecting bolt 5 to realize the connection of the connecting component 1 and the support component 2. The surfaces of each pre-embedded component in the connecting component 1 are roughened to achieve effective connection with the concrete structure.

[0038] like Figure 1 and Figure 3 As shown, the support leg assembly 2 has a similar structure to the connecting assembly 1, mainly including a support leg base plate 21, a support leg sleeve 22, and an annular sealing plate 23. The support leg sleeve 22 is connected to the support leg top plate 21 and the annular sealing plate 23 respectively by the second connecting bolt 211 and the fourth connecting bolt 6. The bottom of the outer wall of the support leg sleeve 22 is uniformly welded with second stiffening ribs 221 to strengthen the structure. The middle of the sleeve is provided with a circular pipeline channel 222 that connects the inside and outside for the equipment pipeline to connect with the hydraulic jack 3. The inner wall of the support leg sleeve 22 is provided with an integrally cast positioning strip 223. The positioning strip 223 is a vertical corbel rib of equal height distributed along the circumference of the inner wall of the support leg sleeve 22. The positioning strip 223 can effectively strengthen the inner wall of the sleeve on the one hand, and limit and connect the built-in hydraulic jack 3 on the other hand, preventing the jack from rotating relative to the support leg during the installation and rotation construction, and further enhancing the cooperative force-bearing performance of the support leg assembly 2 and the hydraulic jack 3.

[0039] like Figure 1 and Figure 4 As shown, the specific structure of the sliding component 4 is as follows: The main component of the sliding assembly 4, the sliding shoe 41, is a curved steel plate. The upper surface of the sliding shoe 41 is welded with a positioning ring 42 of the same height as the bearing plate 33 of the jack. Each positioning ring 42 has a steel positioning boss 43 that coincides with its center. The positioning boss 43 is specifically a cross boss. Bolt holes are evenly opened on the side wall of the positioning ring 42 so that the fifth connecting bolt 7 can pass through. An arc-shaped rib plate 44 is welded between adjacent positioning rings 42. The two ends and the bottom surface of the arc-shaped rib plate 44 are fixedly connected to the positioning ring 42 and the sliding shoe 41 respectively, thus strengthening the plate.

[0040] Furthermore, a polytetrafluoroethylene plate 411 is attached to the bottom surface of the sliding shoe 41, which can effectively reduce the frictional resistance when the sliding component 4 rotates relative to the slide rail 13, so that the upper rotating structure 8 can generate continuous rotation around the ball joint 11.

[0041] like Figure 5 As shown, the main structure of the hydraulic jack 3 is as follows: The hydraulic jack 3 is mainly composed of a cylinder 31, a piston 32 and a pressure plate 33. The pressure plate 33 is connected to the end of the piston 32 by a thread. The piston 32 can move along the inner wall of the cylinder 31. The outer wall of the cylinder 31 is provided with an oil pipe and a sensor line interface and multiple positioning grooves 311. The top surface and the side surface of the pressure plate 33 are respectively provided with a cross groove 331 and a second threaded hole 332. The positioning groove 331 has a cross structure.

[0042] Furthermore, during the assembly of the hydraulic support foot 12, the side pipeline interface of the hydraulic jack 3 is first aligned with the pipeline channel 222 on the side wall of the support foot casing 22, so that the hydraulic jack 3 slides into the support foot casing 22 from top to bottom. After the hydraulic jack 3 is in place, the positioning strip 223 and the cross groove 311 fit tightly together. The end of the positioning strip 223 has a first threaded hole, which cooperates with the fourth connecting bolt 6 to fix the annular sealing plate 23 to the bottom of the support foot casing 22, restricting the downward movement of the hydraulic jack 3. The pressure plate 33 and the pipeline connector 312 are screwed into the piston 32 and the reserved pipeline interface respectively to complete the installation of the support foot body. The support foot body is connected to the bottom surface of the connecting component 1 by the third connecting bolt 5. Then, after the positioning boss 43 and the cross groove 331 are aligned and matched, the hydraulic jack 3 is connected to the sliding component 4 by the fifth connecting bolt 7. Finally, external equipment such as the hydraulic oil pump and data acquisition system are installed to complete the assembly of the hydraulic support foot 12.

[0043] In this embodiment, the support foot is equipped with a hydraulic jack to achieve autonomous adjustment of the support foot height, realize effective contact between the sliding component and the slide surface, and at the same time, the hydraulic equipment can play a good buffering role when the beam falls, which can effectively improve the stability of the bridge superstructure during the construction process.

[0044] In this embodiment, the hydraulic pump controls the synchronous lifting and lowering of each support leg jack, and the pressure sensor monitors the lifting force of the support leg jack, realizing multiple functions such as temporary support, structural weighing and system conversion. It has good adaptability, reduces the input of construction machinery and manpower, and is more economical and efficient.

[0045] In this embodiment, the device is made of high-strength steel, and an anti-corrosion layer is set on the surface of the exposed components. At the same time, the surface of the embedded connecting components is roughened, and the components are connected by high-strength bolts. The structure has good load-bearing capacity and durability, ensuring safe construction.

[0046] In this embodiment, the device adopts modular prefabricated components, which are connected by bolts to achieve rapid disassembly and replacement, improving on-site construction efficiency. Damaged or defective support legs can be processed and used as anchor cylinders, which can reduce costs and is more energy-efficient and environmentally friendly. Example 2 Combination Figure 6 and Figure 7The following steps explain how to use the above-mentioned prefabricated multi-functional hydraulic support legs for rotating bridges: Step 1: Weld a cross anchor plate 111 and a vertical anchor plate 112 to the inside and outside of the anchor cylinder 11, respectively. Weld the bolt sleeve 121 to the upper surface of the pre-embedded connecting plate 12. Secure the anchor cylinder 11 and the pre-embedded connecting plate 12 to form a connecting assembly using the first connecting bolt 122. Weld a cross-shaped positioning boss 43 inside the positioning ring 42. Weld the positioning ring 42 and the arc-shaped rib plate 44 to the corresponding positions on the top surface of the sliding shoe 41 to complete the assembly of the sliding assembly 4.

[0047] Step 2: After the hydraulic jack 3 is inverted, align the pipeline interface with the pipeline channel 222 provided on the wall of the support foot casing, and let it slide in along the bracket vertical rib (positioning strip 223) provided on the inner wall of the support foot casing 22. Then install the annular sealing plate 23 to restrict the downward movement of the hydraulic jack 3, tighten the pressure plate 33 along the piston end thread and install the pipeline joint, and connect the support foot top plate 21 and the support foot casing 22 with the second connecting bolt 211 to form the support foot body.

[0048] Step 3: Install the ball hinge 15, slide rail 13, and traction device 10 onto the top surface of the turntable under the foundation cap or pier (specifically in this embodiment). Figure 6 (Bridge pier 14) Check whether the plane position and elevation of each device meet the design requirements. Erect a turntable template on the top surface of the ball hinge 15 and tie the reinforcing bars. At the same time, embed the connecting component 1 so that the embedded connecting plate 12 is flush with the lower surface of the upper turntable 9. Install the main body of the support foot under the connecting component 1 through the third connecting bolt 5. Connect the sliding component 4 to the bearing plate 33 of the jack. Connect the hydraulic jack 3 to the hydraulic oil pump and the data acquisition system through hydraulic oil pipes and data lines respectively. Repeat this step to complete the installation of multiple hydraulic support feet.

[0049] Step 4: Adjust the extension length of the piston 32 of the jack so that the bottom surface of the sliding shoe 41 contacts the surface of the slide 13. At this time, the upper construction load is borne by the support foot. Then, pour the upper turntable 9 and temporarily fix it to the lower turntable. Install the traction equipment 10 and pour the upper structure of the bridge.

[0050] Step 5: Release the temporary fixing measures between the upper turntable 9 and the lower turntable, operate the hydraulic oil pump to make the jacks lift synchronously, collect data from the pressure sensor to obtain the lifting force of each support foot, complete the weighing test of the rotating structure through the hydraulic support feet, and calculate the unbalanced counterweights in the longitudinal and transverse directions of the bridge.

[0051] Step Six: After confirming that the hydraulic support legs and other devices are working properly, proceed with the rotation construction. At the beginning of the rotation, the piston of the hydraulic support legs should be appropriately contracted, with the ball joint 15 bearing the main load and the support legs bearing the secondary load. In the final stage of the rotation, the hydraulic support legs synchronously lift the cylinder to bear the main upper load. The rotation is changed from continuous rotation to inching. After fine-tuning the position of the rotating structure, check whether its alignment and elevation are consistent with the design, and drive steel wedges between the slipper 41 and the slide rail 13.

[0052] Step 7: On the upper turntable 9 and the lower turntable (specifically in this embodiment) Figure 6 The bridge pier 14) is installed with permanent bearings. The oil pump is controlled to make the hydraulic support cylinders contract synchronously. At this time, the upper rotating structure 8 slowly falls on the permanent bearings, and the force on the ball hinge 15 is converted to the force on the permanent bearings to complete the system conversion.

[0053] Step 8: Erect temporary supports to support the ends of the cantilever beam, remove temporary facilities such as the support legs, ball joint 15 and slide rail 13. When removing the support legs, remove the sliding components, support leg components and hydraulic jacks in sequence from bottom to top, and finally carry out the construction of the cantilever section at the beam end.

[0054] This invention discloses a prefabricated hydraulic support for bridge rotation. The main body of the device consists of hydraulic jacks integrated within the support assembly. A sliding component transfers the load of the rotating structure to the foundation. A hydraulic pump controls the piston extension and retraction of the jacks to autonomously adjust the support height. Pressure sensor data monitors the lifting force of each hydraulic support, ensuring the overall stability of the rotating structure. The device provides multiple functions, including temporary support, structural weighing, and system conversion. All components are made of steel and connected by bolts, resulting in a high structural load-bearing capacity and a high degree of prefabrication. This allows for rapid disassembly, repair, and replacement, while reducing the need for construction equipment and manpower, making it more efficient and economical.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A bridge rotation prefabricated hydraulic support, characterized in that, It includes a connecting component (1) and a support component (2) connected from top to bottom. The support component (2) is equipped with a hydraulic jack (3). The lower end of the hydraulic jack (3) is connected to a sliding component (4). The hydraulic jack (3) can drive the connecting component (1) and the support component (2) to move axially synchronously. The sliding component (4) includes a positioning ring (42), the lower end of the hydraulic jack (3) is embedded in the positioning ring (42), and a sliding shoe (41) is provided at the lower end of the positioning ring (42). During construction, a slide (13) corresponding to the sliding shoe (41) is provided on the base to be constructed.

2. The bridge rotation assembly hydraulic support leg according to claim 1, characterized in that, The positioning ring (42) is provided with a positioning boss inside, and the lower end of the hydraulic jack (3) is provided with a positioning groove (311) corresponding to the positioning boss (43).

3. The bridge rotation assembly hydraulic support leg according to claim 2, characterized in that, The support leg assembly (2) includes a support leg sleeve (22), the upper end of which is connected to a support leg top plate (21), and the support leg top plate (21) is connected to the connecting assembly (1); The hydraulic jack (3) is located inside the foot support sleeve (22). The lower end of the foot support sleeve (22) is provided with an annular sealing plate (23). A through hole is opened on the annular sealing plate (23). The hydraulic jack (3) includes a cylinder (31). A piston (32) is provided inside the cylinder (31). The lower end of the piston (32) is connected to a pressure plate (33). The pressure plate (33) is embedded in the positioning ring (42). The piston (32) passes through the through hole on the annular sealing plate (23). The cylinder (31) is located inside the foot support sleeve (22).

4. The bridge rotation assembly hydraulic support leg according to claim 3, characterized in that, The inner wall of the support sleeve (22) is provided with a positioning strip (223), and the side wall of the oil cylinder (31) is provided with a positioning groove (311) that corresponds to and cooperates with the positioning strip (223).

5. A bridge rotation assembly hydraulic support leg according to claim 3, characterized in that, The side wall of the support sleeve (22) is provided with a pipeline channel (222) corresponding to the pipeline interface on the oil cylinder (31).

6. The bridge rotation prefabricated hydraulic support leg according to claim 1, characterized in that, The connecting assembly (1) includes an anchor cylinder (11), a cross anchor plate (111) is provided inside the anchor cylinder (11), a vertical anchor plate (112) is provided on the outer wall of the cross anchor cylinder (11), a pre-embedded connecting plate (12) is connected to the lower end of the anchor cylinder (11), and the pre-embedded connecting plate (12) is connected to the support foot assembly (2).

7. A bridge rotation prefabricated hydraulic support leg according to claim 6, characterized in that, The pre-embedded connecting plate (12) is provided with a bolt sleeve (121), which is connected to the support leg assembly (2) through the bolt sleeve (121).

8. A bridge rotation assembly hydraulic support leg according to claim (1), characterized in that, The slipper (41) is an arc-shaped steel plate. During construction, there is a gap between the two ends of the slipper (41) and the slide (13), and the middle part of the slipper (41) is in contact with the end face of the slide (13).

9. A bridge rotation assembly hydraulic support leg according to claim 1, characterized in that, Two positioning rings (42) are spaced apart on the slipper (41), and the two positioning rings (42) are connected by an arc-shaped rib plate (44).

10. A method for using a prefabricated hydraulic support for bridge rotation, characterized in that, Includes the following steps: On the base to be constructed, a ball joint (15), a slide (13) and a traction device (10) are pre-installed. Erect a turntable template on the ball joint (15), embed several connecting components (1) circumferentially into the turntable template, install the support leg assembly (2) to the lower end of the connecting component (1); assemble the hydraulic jack (3) and the sliding assembly (4). Start the hydraulic jack (3) to gradually make the sliding shoe (41) contact the slide (13) and pour the upper turntable template to obtain the upper turntable (9). Connect the traction device (10) to the upper turntable (9) and pour the bridge superstructure. After the pouring is completed, start the hydraulic jacks (3) to lift all the hydraulic jacks (3) synchronously. After reaching the preset support state, drive the traction device (10). The traction device (10) applies circumferential driving force to the upper turntable (9). With the cooperation of several slippers (41) and ball joints (15) at the bottom, the upper turntable (9) starts to rotate. At this time, the rotation construction is carried out. When the rotation construction is initially carried out, all the hydraulic jacks (3) retract synchronously. At this time, the ball joint (15) is the main support and the circumferentially distributed hydraulic support feet are the auxiliary support. After the initial construction is completed, all the hydraulic jacks (3) lift synchronously. At this time, the ball joint (15) is the auxiliary support and the circumferentially distributed hydraulic support feet are the main support. After the rotation construction is completed, the fixed connection of the sliding shoe (41) and the slide (13) is made. The permanent bridge support is installed between the upper turntable (9) and the base. All the hydraulic jacks (3) retract synchronously, and the upper turntable (9) gradually falls onto the permanent bridge support. Remove the hydraulic support legs and proceed with subsequent construction.

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