A pushing jack connecting structure

Abstract

The utility model discloses a kind of push jack connecting structures, to solve the phenomenon of easy to appear jam in steel box girder pushing process, the stress position appears the damage of insufficient. The utility model includes slide way beam and support beam, steel box girder is loaded on support beam, support beam is supported by support, and several counterforce clamping grooves are set on slide way beam at intervals;Push jack includes jack cylinder and jack telescopic rod, hinge seat is installed on jack cylinder and jack telescopic rod, one hinge seat is hinged with support beam, another hinge seat is hinged counterforce shear seat, counterforce shear block is set on counterforce shear seat, and counterforce shear block is connected with counterforce clamping groove. Push jack can be self-adapting adjustment in bridge pushing movement process, counterforce shear block and counterforce clamping groove connection are stable and reliable, and counterforce shear block does not warp, ensure the posture stability of steel box girder in pushing process.

Description

Technical Field

[0001] This utility model relates to the field of bridge beam replacement technology, and more specifically, it relates to a jacking connection structure. Background Technology

[0002] Currently, bridge construction often involves beam replacement, where existing beams are removed and replaced with new ones. This replacement process typically employs a lateral movement method, using hydraulic jacks to push the beam and achieve lateral movement. However, due to the unavoidable slight compressive deformation of steel components and foundations under stress, and the imperfect leveling of the grout used in the track leveling process, the steel beam's posture changes with track settlement during the entire jacking process. Because the jacking jacks are bolted to the upper reaction backing and lack rotational capability, the lifting of the superstructure causes the jacking jacks to rise, leading to the reaction shear blocks tilting upwards. This causes misalignment between the reaction shear blocks and the reaction slot plates, resulting in damage to both. For example, Chinese patent application number 2019106253707 discloses a jacking device and a bridge jacking method for bridge jacking construction. The method involves using a push-pull device to push a sliding platform, causing the bridge to be jacked, supported by a movable jacking device, to undergo relative displacement with the temporary pier distribution beam. However, since the push-pull device and the sliding platform are fixedly connected, jamming can easily occur during the push-pull process when the steel box girder's posture changes, potentially damaging the installation structure. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a jacking jack connection structure. The jacking jack can adaptively adjust during the bridge jacking movement. The reaction shear block and the reaction slot are connected smoothly and reliably, and the reaction shear block will not tilt, ensuring the stability of the steel box girder's posture during the jacking process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a jacking connection structure, including a slide beam and a support beam, a steel box beam is mounted on the support beam, a support is slidably arranged on the slide beam to support the support beam, and a plurality of reaction slots are arranged at intervals on the slide beam; the jacking jack includes a jack cylinder and a jack telescopic rod, and a hinge seat is installed on both the jack cylinder and the jack telescopic rod, one hinge seat is hinged to the support beam, and the other hinge seat is hinged to a reaction shear seat, a reaction shear block is arranged on the reaction shear seat, and the reaction shear block is connected to the reaction slot.

[0005] During the jacking operation of the steel box girder, the jacking jacks operate, extending their telescopic rods outwards. The two hinged seats push the support beam and the reaction shear seat respectively. The reaction shear blocks on the reaction shear seat are engaged in reaction slots, remaining stationary as force points, thus pushing the support beam and ultimately the steel box girder. Several reaction slots are spaced apart on the sliding beam. After each jacking operation, the reaction shear blocks separate from the slots, the jack telescopic rods retract, and the reaction shear blocks move to the next slot, connecting to it for the next jacking operation. This process is repeated multiple times until the steel box girder is pushed to the desired position.

[0006] Because the two hinged seats are respectively hinged to the support beam and the reaction shear seat, the jacking jack floats during the jacking process. Even if the level of the support beam deviates or the posture of the steel box girder deviates, the jacking operation of the steel box girder can still be reliably realized. During the jacking process, the reaction shear block and the reaction slot are connected smoothly and reliably. The reaction shear block and the reaction slot are always perpendicular to each other, preventing the reaction shear block from tilting up and ensuring the posture stability of the steel box girder during the jacking process.

[0007] The jacking jack connection structure in this patent application enables the jacking jack to adaptively adjust during the bridge jacking process. The reaction shear block and the reaction slot are connected smoothly and reliably, and the reaction shear block will not tilt, ensuring the stability of the steel box girder's posture during the jacking process.

[0008] Preferably, a jacking seat is provided on the support beam, and a mounting seat is fastened to the jacking seat. The mounting seat is provided with two mounting ears, and a hinged seat is provided with a hinged ear that is hinged between the two mounting ears.

[0009] A jacking seat is installed on the support beam to facilitate connection with the jacking jack. The hinge lug on the hinged seat is hinged between the two mounting lugs, making the connection convenient and reliable.

[0010] Preferably, a connecting seat is provided on the reaction shear seat, and two connecting ears are provided on the connecting seat. A hinge ear provided on another hinge seat is hinged between the two connecting ears.

[0011] A connecting seat is provided on the reaction shear seat, which facilitates connection with the jacking jack. The hinge lug on the hinge seat is hinged between the two connecting lugs, making the connection convenient and reliable.

[0012] Preferably, a piston cylinder is installed on the reaction shear seat, and the piston cylinder telescopic rod is connected to the reaction shear block.

[0013] The reaction shear block is extended and retracted by a piston cylinder, which enables the connection and disengagement of the reaction shear block from the reaction slot, making operation convenient.

[0014] Preferably, a lifting jack is installed on the support, and a lifting piston rod is installed on the lifting jack, which is connected to the support beam.

[0015] The lifting jack is used to lift the support beam. The lifting piston rod extends outward, thereby lifting the steel box beam upward.

[0016] Preferably, a sliding plate is provided at the bottom of the support, and the sliding plate is slidably installed on the slide beam.

[0017] The support is slidably connected to the slide beam via a sliding plate, ensuring the smooth sliding of the support.

[0018] Preferably, a support platform is provided below the slide beam, a support column is installed on the support platform, a spreader beam is installed on the support column, and the slide beam is securely installed on the spreader beam.

[0019] The installation of the support platform, support column, and spreader beam ensures reliable support for the slide beam.

[0020] As a preferred option, protective frames are installed on both sides of the support beam, and the lower part of the steel box girder is limited between the two protective frames.

[0021] The protective frames on both sides of the support beam play a positioning role for the steel box girder, making the connection between the support beam and the steel box girder more reliable.

[0022] Preferably, an extension plate is provided at the outer edge of the reaction groove opening, and a fastening rib is provided between the extension plate and the slide beam.

[0023] The extension plate and stiffening plate improve the load-bearing capacity of the reaction slot sidewall. When the reaction slot sidewall is subjected to the jacking force of the reaction shear block, it is not easy to deform, thus ensuring the reliability of the connection.

[0024] Preferably, the slide beam is rotatably connected with a stop rod, and the stop rod is set one-to-one with the reaction force slot. The stop rod is connected to a positioning torsion spring and is set at an angle. One side of the stop rod abuts against the reaction force shear seat, and the other side abuts against the slide beam to stop the reaction force shear seat from moving backward.

[0025] As the reaction shear seat slides along the jacking direction on the slide beam, it can press down the anti-reverse rod, at which point the anti-reverse rod will not obstruct the sliding of the reaction shear seat. After the reaction shear seat slides into place, the reaction shear block is inserted into the reaction slot, and the anti-reverse rod abuts against the reaction shear seat to stop its backward movement, further improving the reliability of the jacking process of the reaction shear seat.

[0026] Compared with the prior art, the beneficial effects of this utility model are: (1) The jacking jack connection structure of this patent application enables the jacking jack to adaptively adjust during the jacking movement of the bridge. The jacking jack is in a floating state, and the reaction shear block and the reaction slot are always perpendicular. The reaction shear block will not tilt up, ensuring the stability of the steel box girder during the jacking process; (2) The reaction shear block is driven to extend and retract by the piston cylinder, realizing the connection and disengagement of the reaction shear block and the reaction slot, which is convenient to operate; (3) An extension plate and a stiffener are set at the opening of the reaction slot, which improves the bearing capacity of the side wall of the reaction slot. When the side wall of the reaction slot is subjected to the jacking force of the reaction shear block, it is not easy to deform, ensuring the reliability of the connection; (4) The anti-reverse rod abuts against the reaction shear seat to realize the anti-reverse of the reaction shear seat, further improving the reliability of the jacking process of the reaction shear seat. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention.

[0028] Figure 2 This is a structural diagram of the jacking mechanism of this utility model.

[0029] Figure 3 This is a diagram of the support connection structure of this utility model.

[0030] Figure 4 This is a diagram showing the connection between the jacking jack and the slide beam in Embodiment 1 of this utility model.

[0031] Figure 5 This is a diagram showing the connection between the jacking jack and the slide beam in Embodiment 2 of this utility model.

[0032] Figure 6 This is a diagram showing the connection between the jacking jack and the slide beam in Embodiment 3 of this utility model.

[0033] In the diagram: 1. Slide beam, 2. Support beam, 3. Steel box girder, 4. Support, 5. Reaction groove, 6. Jack cylinder, 7. Jack telescopic rod, 8. Hinge seat, 9. Reaction shear seat, 10. Reaction shear block, 11. Protective frame, 12. Inclined plate, 13. Support plate, 14. Push seat, 15. Mounting seat, 16. Mounting ear, 17. Connecting seat, 18. Connecting ear, 19. Extension plate, 20. Rib plate, 21. Slide plate, 22. Lifting jack, 23. Lifting piston rod, 24. Base plate, 25. Pad plate, 26. Anti-reverse rod, 27. Mounting groove, 28. Abutment surface, 29. Foundation, 30. Support column, 31. Spreader beam. Detailed Implementation

[0034] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0035] Example 1: A jacking jack connection structure (see...) Figure 1 , Figure 2 , Figure 3 , Figure 4 The system includes a slide beam 1 and a support beam 2. A steel box beam 3 is mounted on the support beam 2. A support 4 is slidably mounted on the slide beam 1, positioned between the slide beam 1 and the support beam 2, supporting the support beam 2. Multiple slide beams 1 and 2 are spaced apart along the length of the steel box beam 3. Several reaction slots 5 are spaced apart on the slide beam 1. The jacking jack includes a jack cylinder 6 and a jack telescopic rod 7. Hinges 8 are installed on both the jack cylinder 6 and the jack telescopic rod 7. The jacking jack is floating. One hinge 8 is hinged to the support beam 2, and the other hinge 8 is hinged to a reaction shear seat 9. A reaction shear block 10 is mounted on the reaction shear seat 9, and the reaction shear block 10 is connected to the reaction slot 5. In this embodiment, the hinge 8 on the jack cylinder 6 is hinged to the support beam 2, and the hinge 8 on the jack telescopic rod 7 is hinged to the reaction shear seat 9.

[0036] Protective frames 11 are installed on both sides of the support beam 2, and the lower part of the steel box girder 3 is limited between the two protective frames 11. The protective frame 11 includes an inclined plate 12 and a support plate 13. The support plate 13 connects the inclined plate 12 and the support beam 2, and the inclined plate 12 supports and limits the sides of the steel box girder 3. The protective frames 11 on both sides of the support beam 2 play a positioning role for the steel box girder 3, making the connection between the support beam 2 and the steel box girder 3 more reliable.

[0037] A jacking seat 14 is installed on the support beam 2, and the jacking seat 14 is fastened to one end of the support beam 2. A mounting seat 15 is fastened to the jacking seat 14 by screws. The mounting seat 15 is provided with two mounting ears 16. A hinge ear on a hinged seat 8 is hinged between the two mounting ears 16. The hinge ear and the mounting ears 16 are hinged together by a hinge shaft. The jacking seat 14 on the support beam 2 facilitates the connection with the jacking jack. The hinge ear on the hinged seat 8 is hinged between the two mounting ears 16, making the connection convenient and reliable.

[0038] A connecting seat 17 is provided on the reaction shear seat 9. The connecting seat 17 and the reaction shear seat 9 are fastened together by screws. Two connecting ears 18 are provided on the connecting seat 17, and a hinge ear on another hinge seat 8 is hinged between the two connecting ears 18. The hinge ear and the connecting ear 18 are hinged together by a hinge shaft. The connecting seat 17 on the reaction shear seat 9 facilitates the connection with the jacking jack. The hinge ear on the hinge seat 8 is hinged between the two connecting ears 18, making the connection convenient and reliable.

[0039] A piston cylinder is installed on the reaction shear seat 9, and the piston cylinder extension rod is connected to the reaction shear block 10. The piston cylinder is a double-piston hydraulic cylinder, with piston cylinder extension rods at both ends, and each piston cylinder extension rod is connected to a reaction shear block 10. The slide beam 1 has a U-shaped structure, and reaction slots 5 are provided on both side walls of the slide beam 1. The two reaction shear blocks 10 installed on the reaction shear seat 9 are respectively inserted into the reaction slots 5 on both sides of the slide beam 1.

[0040] A sliding plate 21 is installed at the bottom of the support 4, and the sliding plate 21 is slidably mounted on the slide beam 1. The support 4 is placed between the two side walls of the slide beam 1. A lifting jack 22 is installed on the support 4, and a lifting piston rod 23 is installed on the lifting jack 22. The lifting piston rod 23 is connected to the support beam 2. A base plate 24 and a pad 25 are installed between the lifting piston rod 23 and the support beam 2. The pad 25 is fastened to the support beam 2, and the base plate 24 is fastened to the lifting piston rod 23. The base plate 24 and the pad 25 are supported together and connected and fastened.

[0041] A support platform 29 is installed below the slide beam 1, and multiple support columns 30 are installed on the support platform 29. The support columns 30 are connected into a whole by connecting rods. A spreader beam 31 is installed on the support column 30, and the slide beam 1 is fastened to the spreader beam 31. The multiple spreader beams 31 ensure stable support for the support beam 2.

[0042] During the jacking operation of the steel box girder 3, the jacking jacks operate, causing the jack extension rod 7 to extend outwards. The two hinged seats 8 respectively jack the support beam 2 and the reaction shear seat 9. The reaction shear block 10 set on the reaction shear seat 9 is locked in the reaction slot 5. The reaction shear block 10 remains stationary as the force point, which can push the support beam 2 to move, thereby realizing the jacking of the steel box girder 3. Several reaction slots 5 are set at intervals on the slide beam 1. After the jacking jack completes one jacking operation, the reaction shear block 10 separates from the reaction slot 5, the jack extension rod 7 retracts back to its original position, causing the reaction shear block 10 to move to the next reaction slot 5 position and insert and connect the reaction shear block 10 to the next reaction slot 5 for the next jacking operation. After multiple jacking operations, the steel box girder 3 is pushed to the appropriate position.

[0043] Since the two hinged seats 8 are respectively hinged to the support beam 2 and the reaction shear seat 9, the jacking jack floats during the jacking process. Even if the horizontality of the support beam 2 deviates or the posture of the steel box girder 3 deviates, the jacking operation of the steel box girder 3 can still be reliably realized. During the jacking process, the reaction shear block 10 is stably and reliably connected to the reaction slot 5. The reaction shear block 10 and the reaction slot 5 are always perpendicular to each other, preventing the reaction shear block 10 from tilting up and ensuring the stability of the posture of the steel box girder 3 during the jacking process.

[0044] Example 2: A jacking jack connection structure (see...) Figure 5The system includes a slide beam 1 and a support beam 2. A steel box beam 3 is mounted on the support beam 2. A support 4 is slidably mounted on the slide beam 1, positioned between the slide beam 1 and the support beam 2, supporting the support beam 2. Multiple slide beams 1 and 2 are spaced apart along the length of the steel box beam 3. Several reaction slots 5 are spaced apart on the slide beam 1. The jacking jack includes a jack cylinder 6 and a jack telescopic rod 7. Hinges 8 are installed on both the jack cylinder 6 and the jack telescopic rod 7. The jacking jack is floating. One hinge 8 is hinged to the support beam 2, and the other hinge 8 is hinged to a reaction shear seat 9. A reaction shear block 10 is mounted on the reaction shear seat 9, and the reaction shear block 10 is connected to the reaction slot 5. In this embodiment, the hinge 8 on the jack cylinder 6 is hinged to the support beam 2, and the hinge 8 on the jack telescopic rod 7 is hinged to the reaction shear seat 9.

[0045] Protective frames 11 are installed on both sides of the support beam 2, and the lower part of the steel box girder 3 is limited between the two protective frames 11. The protective frame 11 includes an inclined plate 12 and a support plate 13. The support plate 13 connects the inclined plate 12 and the support beam 2, and the inclined plate 12 supports and limits the sides of the steel box girder 3. The protective frames 11 on both sides of the support beam 2 play a positioning role for the steel box girder 3, making the connection between the support beam 2 and the steel box girder 3 more reliable.

[0046] A jacking seat 14 is installed on the support beam 2, and the jacking seat 14 is fastened to one end of the support beam 2. A mounting seat 15 is fastened to the jacking seat 14 by screws. The mounting seat 15 is provided with two mounting ears 16. A hinge ear on a hinged seat 8 is hinged between the two mounting ears 16. The hinge ear and the mounting ears 16 are hinged together by a hinge shaft. The jacking seat 14 on the support beam 2 facilitates the connection with the jacking jack. The hinge ear on the hinged seat 8 is hinged between the two mounting ears 16, making the connection convenient and reliable.

[0047] A connecting seat 17 is provided on the reaction shear seat 9. The connecting seat 17 and the reaction shear seat 9 are fastened together by screws. Two connecting ears 18 are provided on the connecting seat 17, and a hinge ear on another hinge seat 8 is hinged between the two connecting ears 18. The hinge ear and the connecting ear 18 are hinged together by a hinge shaft. The connecting seat 17 on the reaction shear seat 9 facilitates the connection with the jacking jack. The hinge ear on the hinge seat 8 is hinged between the two connecting ears 18, making the connection convenient and reliable.

[0048] A piston cylinder is installed on the reaction shear seat 9, and the piston cylinder extension rod is connected to the reaction shear block 10. The piston cylinder is a double-piston hydraulic cylinder, with piston cylinder extension rods at both ends, and each piston cylinder extension rod is connected to a reaction shear block 10. The slide beam 1 has a U-shaped structure, and reaction slots 5 are provided on both side walls of the slide beam 1. The two reaction shear blocks 10 installed on the reaction shear seat 9 are respectively inserted into the reaction slots 5 on both sides of the slide beam 1.

[0049] An extension plate 19 is provided at the outer opening edge of the reaction groove 5, and a stiffening rib 20 is fastened between the extension plate 19 and the slide beam 1. The extension plate 19 is provided on the outer wall of the reaction groove 5, and two extension plates 19 are provided on the left and right sides of each reaction groove 5. The provision of the extension plate 19 and the stiffening rib 20 improves the load-bearing capacity of the side wall of the reaction groove 5. When the side wall of the reaction groove 5 is subjected to the pushing force of the reaction shear block 10, it is not easy to deform, thus ensuring the reliability of the connection.

[0050] A sliding plate 21 is installed at the bottom of the support 4, and the sliding plate 21 is slidably mounted on the slide beam 1. The support 4 is placed between the two side walls of the slide beam 1. A lifting jack 22 is installed on the support 4, and a lifting piston rod 23 is installed on the lifting jack 22. The lifting piston rod 23 is connected to the support beam 2. A base plate 24 and a pad 25 are installed between the lifting piston rod 23 and the support beam 2. The pad 25 is fastened to the support beam 2, and the base plate 24 is fastened to the lifting piston rod 23. The base plate 24 and the pad 25 are supported together and connected and fastened.

[0051] A support platform 29 is installed below the slide beam 1, and multiple support columns 30 are installed on the support platform 29. The support columns 30 are connected into a whole by connecting rods. A spreader beam 31 is installed on the support column 30, and the slide beam 1 is fastened to the spreader beam 31. The multiple spreader beams 31 ensure stable support for the support beam 2.

[0052] During the jacking operation of the steel box girder 3, the jacking jacks operate, causing the jack extension rod 7 to extend outwards. The two hinged seats 8 respectively jack the support beam 2 and the reaction shear seat 9. The reaction shear block 10 set on the reaction shear seat 9 is locked in the reaction slot 5. The reaction shear block 10 remains stationary as the force point, which can push the support beam 2 to move, thereby realizing the jacking of the steel box girder 3. Several reaction slots 5 are set at intervals on the slide beam 1. After the jacking jack completes one jacking operation, the reaction shear block 10 separates from the reaction slot 5, the jack extension rod 7 retracts back to its original position, causing the reaction shear block 10 to move to the next reaction slot 5 position and insert and connect the reaction shear block 10 to the next reaction slot 5 for the next jacking operation. After multiple jacking operations, the steel box girder 3 is pushed to the appropriate position.

[0053] Since the two hinged seats 8 are respectively hinged to the support beam 2 and the reaction shear seat 9, the jacking jack floats during the jacking process. Even if the horizontality of the support beam 2 deviates or the posture of the steel box girder 3 deviates, the jacking operation of the steel box girder 3 can still be reliably realized. During the jacking process, the reaction shear block 10 is stably and reliably connected to the reaction slot 5. The reaction shear block 10 and the reaction slot 5 are always perpendicular to each other, preventing the reaction shear block 10 from tilting up and ensuring the stability of the posture of the steel box girder 3 during the jacking process.

[0054] Example 3: A jacking jack connection structure (see...) Figure 5 , Figure 6 The system includes a slide beam 1 and a support beam 2. A steel box beam 3 is mounted on the support beam 2. A support 4 is slidably mounted on the slide beam 1, positioned between the slide beam 1 and the support beam 2, supporting the support beam 2. Multiple slide beams 1 and 2 are spaced apart along the length of the steel box beam 3. Several reaction slots 5 are spaced apart on the slide beam 1. The jacking jack includes a jack cylinder 6 and a jack telescopic rod 7. Hinges 8 are installed on both the jack cylinder 6 and the jack telescopic rod 7. The jacking jack is floating. One hinge 8 is hinged to the support beam 2, and the other hinge 8 is hinged to a reaction shear seat 9. A reaction shear block 10 is mounted on the reaction shear seat 9, and the reaction shear block 10 is connected to the reaction slot 5. In this embodiment, the hinge 8 on the jack cylinder 6 is hinged to the support beam 2, and the hinge 8 on the jack telescopic rod 7 is hinged to the reaction shear seat 9.

[0055] Protective frames 11 are installed on both sides of the support beam 2, and the lower part of the steel box girder 3 is limited between the two protective frames 11. The protective frame 11 includes an inclined plate 12 and a support plate 13. The support plate 13 connects the inclined plate 12 and the support beam 2, and the inclined plate 12 supports and limits the sides of the steel box girder 3. The protective frames 11 on both sides of the support beam 2 play a positioning role for the steel box girder 3, making the connection between the support beam 2 and the steel box girder 3 more reliable.

[0056] A jacking seat 14 is installed on the support beam 2, and the jacking seat 14 is fastened to one end of the support beam 2. A mounting seat 15 is fastened to the jacking seat 14 by screws. The mounting seat 15 is provided with two mounting ears 16. A hinge ear on a hinged seat 8 is hinged between the two mounting ears 16. The hinge ear and the mounting ears 16 are hinged together by a hinge shaft. The jacking seat 14 on the support beam 2 facilitates the connection with the jacking jack. The hinge ear on the hinged seat 8 is hinged between the two mounting ears 16, making the connection convenient and reliable.

[0057] A connecting seat 17 is provided on the reaction shear seat 9. The connecting seat 17 and the reaction shear seat 9 are fastened together by screws. Two connecting ears 18 are provided on the connecting seat 17, and a hinge ear on another hinge seat 8 is hinged between the two connecting ears 18. The hinge ear and the connecting ear 18 are hinged together by a hinge shaft. The connecting seat 17 on the reaction shear seat 9 facilitates the connection with the jacking jack. The hinge ear on the hinge seat 8 is hinged between the two connecting ears 18, making the connection convenient and reliable.

[0058] A piston cylinder is installed on the reaction shear seat 9, and the piston cylinder extension rod is connected to the reaction shear block 10. The piston cylinder is a double-piston hydraulic cylinder, with piston cylinder extension rods at both ends, and each piston cylinder extension rod is connected to a reaction shear block 10. The slide beam 1 has a U-shaped structure, and reaction slots 5 are provided on both side walls of the slide beam 1. The two reaction shear blocks 10 installed on the reaction shear seat 9 are respectively inserted into the reaction slots 5 on both sides of the slide beam 1.

[0059] An extension plate 19 is provided at the outer opening edge of the reaction groove 5, and a stiffening rib 20 is fastened between the extension plate 19 and the slide beam 1. The extension plate 19 is provided on the outer wall of the reaction groove 5, and two extension plates 19 are provided on the left and right sides of each reaction groove 5. The provision of the extension plate 19 and the stiffening rib 20 improves the load-bearing capacity of the side wall of the reaction groove 5. When the side wall of the reaction groove 5 is subjected to the pushing force of the reaction shear block 10, it is not easy to deform, thus ensuring the reliability of the connection.

[0060] A sliding plate 21 is installed at the bottom of the support 4, and the sliding plate 21 is slidably mounted on the slide beam 1. The support 4 is placed between the two side walls of the slide beam 1. A lifting jack 22 is installed on the support 4, and a lifting piston rod 23 is installed on the lifting jack 22. The lifting piston rod 23 is connected to the support beam 2. A base plate 24 and a pad 25 are installed between the lifting piston rod 23 and the support beam 2. The pad 25 is fastened to the support beam 2, and the base plate 24 is fastened to the lifting piston rod 23. The base plate 24 and the pad 25 are supported together and connected and fastened.

[0061] A stop rod 26 is rotatably connected to the slide beam 1. The stop rod 26 is correspondingly set with the reaction groove 5. The stop rod 26 is connected to a positioning torsion spring and is inclined. One side of the stop rod 26 abuts against the reaction shear seat 9, and the other side abuts against the slide beam 1, thus preventing the reaction shear seat 9 from sliding backward. An installation groove 27 is provided on the slide beam 1. A recessed groove is provided at the bottom of the installation groove 27. One side wall of the recessed groove is inclined to form a contact surface 28. The stop rod 26 is rotatably installed on the side wall of the installation groove 27 via a rotating shaft. The positioning torsion spring is fitted on the rotating shaft. One end of the positioning torsion spring abuts against the inner wall of the installation groove 27, and the other end abuts against the stop rod 26. The lower part of the stop rod 26 abuts against the contact surface 28 to achieve positioning. During the process of the reaction shear seat 9 sliding along the pushing direction on the slide beam 1, it can press down the stop rod 26. At this time, the stop rod 26 will not obstruct the sliding of the reaction shear seat 9. After the reaction shear seat 9 slides into place, the reaction shear block 10 is inserted into the reaction slot 5, and the anti-reverse rod 26 abuts against the reaction shear seat 9 to prevent the reaction shear seat 9 from retracting, thereby further improving the reliability of the reaction shear seat 9 during the pushing process.

[0062] A support platform 29 is installed below the slide beam 1, and multiple support columns 30 are installed on the support platform 29. The support columns 30 are connected into a whole by connecting rods. A spreader beam 31 is installed on the support column 30, and the slide beam 1 is fastened to the spreader beam 31. The multiple spreader beams 31 ensure stable support for the support beam 2.

[0063] During the jacking operation of the steel box girder 3, the jacking jacks operate, causing the jack extension rod 7 to extend outwards. The two hinged seats 8 respectively jack the support beam 2 and the reaction shear seat 9. The reaction shear block 10 set on the reaction shear seat 9 is locked in the reaction slot 5. The reaction shear block 10 remains stationary as the force point, which can push the support beam 2 to move, thereby realizing the jacking of the steel box girder 3. Several reaction slots 5 are set at intervals on the slide beam 1. After the jacking jack completes one jacking operation, the reaction shear block 10 separates from the reaction slot 5, the jack extension rod 7 retracts back to its original position, causing the reaction shear block 10 to move to the next reaction slot 5 position and insert and connect the reaction shear block 10 to the next reaction slot 5 for the next jacking operation. After multiple jacking operations, the steel box girder 3 is pushed to the appropriate position.

[0064] Since the two hinged seats 8 are respectively hinged to the support beam 2 and the reaction shear seat 9, the jacking jack floats during the jacking process. Even if the horizontality of the support beam 2 deviates or the posture of the steel box girder 3 deviates, the jacking operation of the steel box girder 3 can still be reliably realized. During the jacking process, the reaction shear block 10 is stably and reliably connected to the reaction slot 5. The reaction shear block 10 and the reaction slot 5 are always perpendicular to each other, preventing the reaction shear block 10 from tilting up and ensuring the stability of the posture of the steel box girder 3 during the jacking process.

[0065] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A jacking connection structure, characterized in that, It includes a slide beam and a support beam. A steel box girder is mounted on the support beam. A support is slidably installed on the slide beam to support the support beam. Several reaction slots are set at intervals on the slide beam. The jacking jack includes a jack cylinder and a jack telescopic rod. A hinge seat is installed on both the jack cylinder and the jack telescopic rod. One hinge seat is hinged to the support beam, and the other hinge seat is hinged to a reaction shear seat. A reaction shear block is set on the reaction shear seat, and the reaction shear block is connected to the reaction slot.

2. The jacking jack connection structure according to claim 1, characterized in that, A jacking seat is installed on the support beam, and a mounting seat is fastened to the jacking seat. The mounting seat is provided with two mounting ears, and a hinged seat is provided with a hinged ear that is hinged between the two mounting ears.

3. The jacking jack connection structure according to claim 1, characterized in that, A connecting seat is provided on the reaction shear seat, and two connecting ears are provided on the connecting seat. A hinge ear is provided on another hinge seat and hinged between the two connecting ears.

4. The jacking jack connection structure according to claim 1, characterized in that, A piston cylinder is installed on the reaction shear seat, and the piston cylinder telescopic rod is connected to the reaction shear block.

5. The jacking jack connection structure according to claim 1, characterized in that, A lifting jack is installed on the support, and a lifting piston rod is installed on the lifting jack. The lifting piston rod is connected to the support beam.

6. The jacking jack connection structure according to claim 1, characterized in that, A sliding plate is installed at the bottom of the support, and the sliding plate is slidably mounted on the slide beam.

7. The jacking jack connection structure according to claim 1, characterized in that, A support platform is set under the slide beam, a support column is installed on the support platform, a spreader beam is installed on the support column, and the slide beam is securely installed on the spreader beam.

8. The jacking jack connection structure according to claim 1, characterized in that, Protective frames are installed on both sides of the support beam, and the lower part of the steel box girder is limited between the two protective frames.

9. A jacking connection structure according to any one of claims 1 to 8, characterized in that, An extension plate is provided at the outer edge of the reaction groove opening, and a connecting rib is fastened between the extension plate and the slide beam.

10. A jacking jack connection structure according to any one of claims 1 to 8, characterized in that, The slide beam is rotatably connected with a stop rod, and the stop rod is set one-to-one with the reaction force slot. The stop rod is connected to a positioning torsion spring and is set at an angle. One side of the stop rod abuts against the reaction force shear seat, and the other side abuts against the slide beam to stop the reaction force shear seat from moving backward.

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