Longitudinal pushing device for closure section of continuous rigid frame bridge

Abstract

The invention relates to the technical field of closure section pushing, in particular to a continuous rigid frame bridge closure section longitudinal pushing device which comprises a hydraulic cylinder, a first beam body and a second beam body. The hydraulic cylinder is installed at the bottom of the second beam body, the first beam body is located above the hydraulic cylinder, and the pushing mechanism is installed on the hydraulic cylinder; the pulling mechanism is mounted at the driving end of the pushing mechanism and is used for adaptively pulling the adjusting beam body I; the pushing mechanism comprises a driving assembly, a control assembly, a bearing assembly, an adjusting assembly and a clamping assembly. The driving assembly is installed in the hydraulic cylinder and used for driving the bearing assembly to move. The control assembly communicates with the driving assembly and is used for conveying hydraulic oil into the hydraulic cylinder; the distance between the first beam body and the second beam body at different intervals can be adjusted to be the same only by setting the moving distance of the control block on the first driving device, each closure section does not need to be calculated independently, and the device is suitable for continuous operation of a plurality of closure sections.

Description

Technical Field

[0001] This invention relates to the field of jacking technology for closure sections, and specifically to a longitudinal jacking device for the closure section of a continuous rigid frame bridge. Background Technology

[0002] During the construction of rigid frame bridges, construction usually begins simultaneously from multiple locations. This results in the need to connect the bridges built at different points. The longitudinal jacking device for the closure section of a continuous rigid frame bridge is a temporary construction system designed to actively adjust the internal forces and alignment of the bridge. First, the bridge on one side of the closure section that has been adjusted is fixed. Then, a horizontal thrust is applied to the bridge on the other side of the closure section that has not been adjusted, causing the bridge to undergo a predetermined longitudinal offset to reach a designated position. This adjusts the distance between the bridges on both sides of the closure section to counteract the additional internal forces caused by future concrete shrinkage, temperature changes, etc.

[0003] Chinese patent CN221589306U discloses a longitudinal jacking device for the closure section of a continuous rigid frame bridge. The device includes a closure section, with a connector fixedly connected to the top outer wall of the closure section. A bracket is fixedly connected to the outer wall of the connector. A second limiting plate is provided on the top outer wall of the bracket, and a mutual pushing mechanism is provided on the outer wall of the second limiting plate. A first lateral adjustment mechanism is provided between the second limiting plate and the bracket, and a base plate is provided at the bottom of the bracket. The prior art allows for adjustment of the mutual pushing position through the first lateral adjustment mechanism, facilitating adjustments based on specific conditions and improving operational convenience. The jacking mechanism allows for bridge jacking treatment, resulting in more rational stress distribution on the main beams and piers after bridge completion. The second lateral adjustment mechanism further improves adjustment convenience by allowing lateral adjustment of the jacking mechanism. Finally, the longitudinal position of the jacking mechanism can be adjusted through the position adjustment mechanism.

[0004] Firstly, a large continuous rigid frame bridge often has multiple closure segments. Each time longitudinal jacking is carried out on a closure segment, the staff needs to adjust the actual offset position of the bridge on both sides of the closure segment that has not been adjusted. During the construction process, due to various factors, the distance between the bridges on both sides of each closure segment may be different. This means that the construction staff needs to calculate and adjust the distance or set the pushing parameters of the jacking device each time in order to make these closure segments meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a longitudinal jacking device for the closure section of a continuous rigid frame bridge.

[0006] The technical solution of this invention: A longitudinal jacking device for the closure section of a continuous rigid frame bridge, comprising a hydraulic cylinder, a beam body one, and a beam body two; the hydraulic cylinder is installed at the bottom of beam body two, and beam body one is located above the hydraulic cylinder; it further comprises: a jacking mechanism installed on the hydraulic cylinder; a pulling mechanism installed on the drive end of the jacking mechanism, and used for adaptively pulling and adjusting beam body one; the jacking mechanism includes a drive component, a control component, a load-bearing component, an adjustment component, and a locking component; the drive component is installed inside the hydraulic cylinder and used to drive the load-bearing component to move; the control component is connected to the drive component and used to supply hydraulic oil into the hydraulic cylinder; the load-bearing component is connected outside the hydraulic cylinder and used to connect to the pulling mechanism; the adjustment component is installed on the load-bearing component and used to determine the required spacing between beam body one and beam body two; the locking component is installed on the hydraulic cylinder and used to lock the adjustment component; after the adjustment component adjusts the required spacing between beam body one and beam body two, the drive component drives beam body one on the load-bearing component to move, adjusting the spacing between beam body one and beam body two; after the specified spacing is reached, the locking component locks the adjustment component.

[0007] Preferably, the drive assembly includes a piston shaft, an oil drain pipe, a control valve, a first pipe, a second pipe, and a liquid-proof venting section; the large end of the piston shaft is fitted inside the hydraulic cylinder, and the small end passes through the hydraulic cylinder and connects to the pulling mechanism; the two input ends of the oil drain pipe are respectively connected to the two ends of the hydraulic cylinder; the control valve is connected to the output end of the oil drain pipe; the output ends of the first pipe and the second pipe are respectively connected to the two ends of the hydraulic cylinder, and their input ends are connected to the control assembly; the liquid-proof venting section is connected to both sides of the hydraulic cylinder; hydraulic oil enters the hydraulic cylinder from the first pipe, driving the small end of the piston shaft away from the hydraulic cylinder; hydraulic oil enters the hydraulic cylinder from the second pipe, driving the small end of the piston shaft closer to the hydraulic cylinder.

[0008] Preferably, the control assembly includes a control cylinder, a rectangular plate, elastic element one, elastic element two, a blocking block, a circular plate, elastic element four, an L-plate, and an injection pipe; the two ends of the control cylinder are respectively connected to the input ends of pipe one and pipe two; the rectangular plate is installed at the top of the control cylinder; the fixed ends of elastic element one and elastic element four are respectively connected to the two sides of the rectangular plate; there are two L-plates, which are respectively installed at the movable ends of elastic element one and elastic element four; the fixed ends of elastic element two and elastic element three are connected to the control cylinder, and the movable ends are connected to the blocking block, which is movably fitted inside the control cylinder; there are two circular plates, which are respectively installed at the ends of elastic element two and elastic element three away from the blocking block and are squeezed by the L-plate; the injection pipe is connected to the middle of the control cylinder.

[0009] Preferably, the load-bearing component includes an elastic element five, a support part, a drive device three, a hub part, and a connecting chain one; the two ends of the elastic element five are respectively connected to the hydraulic cylinder and the support part; the drive device three is installed outside the hydraulic cylinder, the hub part is installed on the output shaft of the drive device three, and the two ends of the connecting chain one are respectively connected to the support part and the hub part.

[0010] Preferably, the adjusting assembly includes a bearing portion, a drive device, a threaded rod, a round rod, and a control block; the bearing portion is mounted on the bearing assembly and moves above the hydraulic cylinder along with the bearing assembly; the drive device is mounted outside the bearing portion, and its output shaft is connected to the threaded rod; the round rod is mounted inside the bearing portion; the control block is threaded onto the threaded rod and movably sleeved on the round rod; the control block moves along the threaded rod, pushing the movable end of the control assembly to move.

[0011] Preferably, the snap-fit ​​assembly includes a second drive device, a lifting plate, a first spring, and a plug rod; the second drive device is mounted on a hydraulic cylinder, and the lifting plate is mounted on the drive end of the second drive device; the two ends of the first spring are respectively connected to the lifting plate and the plug rod; the plug rod passes through the lifting plate and is inserted into the limiting groove of the control block.

[0012] Preferably, the pulling mechanism includes an elastic element six, a telescopic linkage rod, and a pulling assembly; the two ends of the elastic element six are respectively connected to the support part and the telescopic linkage rod; the other end of the telescopic linkage rod is connected to the beam two; the pulling assembly is installed on the support part.

[0013] Preferably, the pulling component includes an elastic element seven, an adjusting plate, a connecting chain two, and a connecting hole; the two ends of the elastic element seven are respectively connected to the support part and the adjusting plate; the two ends of the connecting chain two are respectively connected to the movable end of the drive component and the adjusting plate; the two ends of the elastic element seven are respectively connected to the support part and the adjusting plate; and the connecting hole is formed on the adjusting plate.

[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: Install the hydraulic cylinder on beam two or the pier at the bottom of beam two. Beam two has been adjusted and fixed. Then, according to the required distance between beam one and beam two, adjust the distance the control block moves towards drive device one. At this time, the farther the control block is from the control cylinder, the longer the required distance between beam one and beam two is.

[0015] Next, the drive unit three is activated, causing the hub to rotate and releasing the connecting chain one. Then, the elasticity of the elastic element five moves the support part towards the beam one. Because the elasticity of the elastic element seven is strong, the connecting chain two is not pulled when the support part moves. Therefore, the small end of the piston shaft remains below the support part. When the adjusting plate contacts the beam one, the support part stops moving. At this point, if the control block pulls the L-plate on the elastic element four, the elastic element three separates from the L-plate and extends. Furthermore, the contraction force of the elastic element one drives the elastic element two to push the blocking block to the connection point between the control cylinder and pipe two, i.e., the direction in which the control block is located within the control cylinder. If the pipe is blocked, either pipe 1 or pipe 2 in this direction will be blocked. When pipe 2 is blocked, it means that beam 1 is too close to beam 2 and needs to be pushed away from beam 2 to achieve the required spacing. At this time, hydraulic oil enters the control cylinder from the injection pipe and is input into the hydraulic cylinder from pipe 1, thereby pushing the piston axis to move outward from the hydraulic cylinder. At this time, the piston axis drives beam 1 at the top of the support to move away from beam 2. Thus, by simply setting the distance that the control block moves on drive device 1, beams 1 and 2 with different spacings can be adjusted to the same spacing. It is no longer necessary to calculate each closure segment separately, which is suitable for continuous operation of multiple closure segments.

[0016] Before the support unit is driven, the end of the telescopic linkage rod furthest from the adjusting plate is connected to the bottom of beam two. At this time, the height of beam two presses down on the telescopic linkage rod. Then, after the adjusting plate contacts beam one, beam one fixes the adjusting plate to beam one. Subsequently, when hydraulic oil is injected into the hydraulic cylinder to drive the piston shaft to move, it will first pull the connecting chain two. Then, the connecting chain two pulls the adjusting plate down. When the adjusting plate lands on the top of the telescopic linkage rod, it means that beam one has descended to the same height as beam two. This completes the adaptive change of the height of beam one when adjusting the longitudinal position of beam one. It is simple, quick and improves construction efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the tube proposed in this invention; Figure 3 This is a schematic diagram of the telescopic rod proposed in this invention; Figure 4 This is a schematic diagram of the structure of the support portion proposed in this invention; Figure 5 This is a schematic diagram of the structure of the control block proposed in this invention; Figure 6 This is a schematic diagram of the structure of the elastic element four proposed in this invention; Figure 7 This is a schematic diagram of the insert rod proposed in this invention; Reference numerals: 1. Hydraulic cylinder; 2. Piston shaft; 3. Oil discharge pipe; 4. Control valve; 5. Pipe 1; 6. Pipe 2; 7. Control cylinder; 8. Rectangular plate; 9. Elastic element 1; 10. Elastic element 2; 11. Elastic element 3; 12. Blocking block; 13. Circular plate; 14. Elastic element 4; 15. L-plate; 16. Elastic element 5; 17. Support part; 18. Bearing part; 19. Drive device 1; 20. Threaded rod; 21. 1. Round rod; 22. Control block; 23. Drive device two; 24. Lifting plate; 25. Spring one; 26. Insert rod; 27. Injection pipe; 28. Drive device three; 29. ​​Hub; 30. Connecting chain one; 31. Elastic element six; 32. Telescopic linkage rod; 33. Elastic element seven; 34. Adjusting plate; 35. Connecting chain two; 36. Connecting hole; 37. Beam one; 38. Beam two; 39. Liquid-proof and breathable part. Detailed Implementation

[0018] Example 1, as Figures 1-6 As shown, the present invention proposes a longitudinal jacking device for the closure segment of a continuous rigid frame bridge, comprising a hydraulic cylinder 1, a beam body 37, and a beam body 38; the hydraulic cylinder 1 is installed at the bottom of the beam body 38, and the beam body 37 is located above the hydraulic cylinder 1; the device further comprises: a jacking mechanism installed on the hydraulic cylinder 1; and a pulling mechanism installed on the drive end of the jacking mechanism and used for adaptively pulling and adjusting the beam body 37; the jacking mechanism includes a drive component, a control component, a load-bearing component, an adjustment component, and a locking component; the drive component is installed inside the hydraulic cylinder 1 and is used to drive the movement of the load-bearing component; the control component... The control component is connected to the drive component and is used to supply hydraulic oil into the hydraulic cylinder 1; the bearing component is connected to the outside of the hydraulic cylinder 1 and is used to connect the pulling mechanism; the adjustment component is installed on the bearing component and is used to determine the required spacing between beam 1 37 and beam 2 38; the locking component is installed on the hydraulic cylinder 1 and is used to lock the adjustment component; after the adjustment component adjusts the required spacing between beam 1 37 and beam 2 38, the drive component drives beam 1 37 on the bearing component to move, adjusting the spacing between beam 1 37 and beam 2 38, and after the specified spacing is reached, the locking component locks the adjustment component.

[0019] The drive assembly includes a piston shaft 2, an oil drain pipe 3, a control valve 4, a first pipe 5, a second pipe 6, and a liquid-proof venting part 39. The large end of the piston shaft 2 is fitted inside the hydraulic cylinder 1, and the small end passes through the hydraulic cylinder 1 and connects to the pulling mechanism. The two input ends of the oil drain pipe 3 are respectively connected to the two ends of the hydraulic cylinder 1. The control valve 4 is connected to the output end of the oil drain pipe 3. The output ends of the first pipe 5 and the second pipe 6 are respectively connected to the two ends of the hydraulic cylinder 1, and their input ends are connected to the control assembly. The liquid-proof venting part 39 is connected to both sides of the hydraulic cylinder 1. Hydraulic oil flows from the first pipe 5... The piston enters the hydraulic cylinder 1, driving the small end of the piston shaft 2 away from the hydraulic cylinder 1; hydraulic oil enters the hydraulic cylinder 1 through pipe 2 6, driving the small end of the piston shaft 2 to approach the hydraulic cylinder 1; the small end of the piston shaft 2 is connected to the connecting chain 2 35; the liquid-proof venting part 39 can be a waterproof venting valve or a vacuum breaking valve, etc.; after adjusting the position of beam 1 37, the insert rod 26 locks the control block 22, thereby locking the position of beam 1 37. At this time, the control valve 4 can be opened to discharge and recycle the hydraulic oil in the inner cavity of the hydraulic cylinder 1.

[0020] The control assembly includes a control cylinder 7, a rectangular plate 8, an elastic element 1 9, an elastic element 2 10, a blocking block 12, a circular plate 13, an elastic element 4 14, an L-plate 15, and an injection pipe 27. The two ends of the control cylinder 7 are connected to the input ends of the first pipe 5 and the second pipe 6, respectively. The rectangular plate 8 is mounted on the top of the control cylinder 7. The fixed ends of the elastic elements 1 9 and 4 14 are connected to the two sides of the rectangular plate 8, respectively. There are two L-plates 15, which are respectively mounted on the movable ends of the elastic elements 1 9 and 4 14. The fixed ends of the elastic elements 2 10 and 3 11 are connected to the control cylinder 7, and their movable ends are connected to the blocking block 12, which is movably fitted inside the control cylinder 7. There are two circular plates 13, which are respectively mounted on the ends of the elastic elements 2 10 and 3 11 away from the blocking block 12 and are compressed by the L-plate 15. The injection pipe 27 is connected to the middle of the control cylinder 7. In the initial state, the blocking block... 12 is located in the middle of the inner cavity of the control cylinder 7. The blocking block 12 blocks the connection between the injection pipe 27 and the control cylinder 7. When the control block 22 is separated from one of the L plates 15, the elastic element 19 or elastic element 414 connected to this L plate 15 is in a contracted state. For example, if the control block 22 stretches the elastic element 414, the elastic element 19 will drive the L plate 15 to move towards the rectangular plate 8. The elastic element 19 is in a contracted state. Since the elasticity of the elastic element 19 is greater than that of the elastic element 210 and the elasticity of the elastic element 414 is greater than that of the elastic element 31, the elastic element 210 is pushed to move, so that the blocking block 12 moves to the connection between the pipe 26 and the control cylinder 7 and blocks the pipe 26. At this time, the hydraulic oil is input into the control cylinder 7 from the injection pipe 27 and then into the hydraulic cylinder 1 from the pipe 15, thereby pushing the piston shaft 2 to move to the outside of the hydraulic cylinder 1, and then pushing the beam 137 away from the beam 238 by a certain distance.

[0021] The load-bearing assembly includes an elastic element 16, a support 17, a drive device 28, a hub 29, and a connecting chain 30. The two ends of the elastic element 16 are connected to the hydraulic cylinder 1 and the support 17, respectively. The drive device 28 is installed outside the hydraulic cylinder 1, the hub 29 is installed on the output shaft of the drive device 28, and the two ends of the connecting chain 30 are connected to the support 17 and the hub 29, respectively. When longitudinal pushing is required, the drive device 28 is started to drive the hub 29 to rotate, thereby releasing the connecting chain 30. At this time, the elasticity of the elastic element 16 drives the support 17 to move towards the beam 37, thereby making the adjusting plate 34 contact the beam 37.

[0022] The adjustment assembly includes a support part 18, a drive device 19, a threaded rod 20, a round rod 21, and a control block 22. The support part 18 is mounted on the support assembly and moves above the hydraulic cylinder 1 along with the support assembly. The drive device 19 is mounted outside the support part 18, and its output shaft is connected to the threaded rod 20. The round rod 21 is mounted inside the support part 18. The control block 22 is threaded onto the threaded rod 20 and movably sleeved onto the round rod 21. The control block 22 moves along the threaded rod 20, pushing the movable end of the control assembly to move. When the round rod 21 rotates and drives the control block 22 to move, it pushes the L plate 15 to move. In the initial state, the drive device 19 is started to rotate the threaded rod 20, adjusting the position of the control block 22. The farther the distance between the control block 22 and the control cylinder 7, the longer the required distance between beam 1 37 and beam 2 38. Conversely, the closer the control block 22 is to the control cylinder 7 in the initial state, the shorter the required distance between beam 1 37 and beam 2 38.

[0023] The snap-fit ​​assembly includes a second drive device 23, a lifting plate 24, a first spring 25, and a plug rod 26. The second drive device 23 is mounted on the hydraulic cylinder 1, and the lifting plate 24 is mounted on the drive end of the second drive device 23. The two ends of the first spring 25 are connected to the lifting plate 24 and the plug rod 26, respectively. The plug rod 26 passes through the lifting plate 24 and is inserted into the limiting groove of the control block 22. When the control block 22 needs to be adjusted, the second drive device 23 is activated to drive the lifting plate 24 to the top, so that the plug rod 26 leaves the limiting groove of the control block 22. The bottom end of the plug rod 26 is inclined. After the adjusting plate 34 supports the beam 37, the second drive device 23 is activated to drive the lifting plate 24 to descend. When the control block 22 moves to the control cylinder 7, the plug rod 26 first contacts the control block 22 through the elasticity of the first spring 25, and the inclined surface at the bottom end of the plug rod 26 slides with the control block 22, so that the plug rod 26 moves upward above the control block 22 and then inserts into the limiting groove of the control block 22.

[0024] Example 2, as Figures 1-4As shown, the longitudinal jacking device for the closure section of a continuous rigid frame bridge proposed in this invention, compared with Embodiment 1, has a pulling mechanism including an elastic element 31, a telescopic linkage rod 32, and a pulling assembly; both ends of the elastic element 31 are connected to the support part 17 and the telescopic linkage rod 32 respectively; the other end of the telescopic linkage rod 32 is connected to the beam 38; the pulling assembly is installed on the support part 17; a connecting hole is provided at the end of the telescopic linkage rod 32 away from the elastic element 31, and the connecting hole can be connected to the beam 38 by bolts or the like.

[0025] The pulling assembly includes an elastic element 33, an adjusting plate 34, a connecting chain 35, and a connecting hole 36. The two ends of the elastic element 33 are connected to the support part 17 and the adjusting plate 34, respectively. The two ends of the connecting chain 35 are connected to the movable end of the drive assembly and the adjusting plate 34, respectively. The two ends of the elastic element 33 are connected to the support part 17 and the adjusting plate 34, respectively. The connecting hole 36 is opened on the adjusting plate 34. When the support part 17 moves towards the beam 37 through the elasticity of the elastic element 16, the piston shaft 2 can be pulled by the connecting chain 35 because the elastic strength of the elastic element 33 is relatively high. At this time, the piston shaft 2 is located below the support part 17, and the height of the adjusting plate 34 does not change.

[0026] Elastic components 1 (9), 4 (14), 5 (16), 6 (31), and 7 (33) are all composed of a telescopic rod and a spring 2; elastic components 2 (10) and 3 (11) are composed of a spring 3 and a movable rod; drive device 1 (19) and drive device 3 (28) are both motors; drive device 2 (23) is a cylinder.

[0027] In summary, in this invention, the hydraulic cylinder 1 is installed at the bottom of the second beam 38 or on the bridge support. Then, the input end of the hydraulic oil is connected to the injection pipe 27, and the telescopic linkage rod 32 is connected to the bottom end of the second beam 38. Subsequently, the drive device 19 is started as needed to drive the threaded rod 20 to rotate. Through the threaded engagement between the threaded rod 20 and the control block 22, the control block 22 is moved along the axial direction of the threaded rod 20 and the round rod 21. Then, the drive device 3 28 is started to drive the hub 29 to rotate, releasing the connecting chain 30. Then, through the elasticity of the elastic element 5 16, the support part 17 is moved away from the hydraulic cylinder 1 and towards the first beam 37. Then, the inclined surface of the adjusting plate 34 is attached to the bottom end of the first beam 37, and then it is locked at the top of the adjusting plate 34. Finally, bolts or the like are used to connect it to the bottom of the first beam 37 through the connecting hole 36.

[0028] If the control block 22 is positioned on the L-plate 15 of the elastic element 14, it indicates that the distance between beam 37 and beam 38 is too close. Beam 37 needs to be pushed away from beam 38 to allow the control block 22 to move to the center of the control cylinder 7. At this time, the elasticity of the elastic element 9 causes the L-plate 15 to push the elastic element 10 towards the control cylinder 7, causing the blocking block 12 to block the connection between the control cylinder 7 and pipe 6. Then, hydraulic oil enters the control cylinder 7 from the injection pipe 27, then through the input pipe 5, and finally into the hydraulic cylinder 1, driving the piston shaft 2 to move outwards from the hydraulic cylinder 1. This pulls the connecting chain 35, causing the adjusting plate 34 to move. When the piston shaft 2 moves and pulls the connecting chain 35, the adjusting plate 34 is pulled down. When the adjusting plate 34 moves to the top of the telescopic linkage rod 32, it means that beam 37 and beam 38 are at the same height. Then the support part 17 is pulled to move. When the support part 17 moves, it drives beam 37 and control block 22 to move. When the control block 22 moves to the middle of the control cylinder 7, the connecting hole 36 is inserted into the control block 22. This means that the distance between beam 37 and beam 38 has reached the predetermined requirement. Then the control valve 4 is activated to discharge the hydraulic oil in the inner cavity of the hydraulic cylinder 1. Then beam 37 and beam 38 can be joined together by pouring or other methods.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A continuous rigid frame bridge closure section longitudinal pushing device, comprising a hydraulic cylinder (1), a beam body one (37) and a beam body two (38); the hydraulic cylinder (1) is installed at the bottom of the beam body two (38), and the beam body one (37) is located above the hydraulic cylinder (1), characterized in that, Also includes: Push mechanism, which is installed on the hydraulic cylinder (1); Pull mechanism, which is installed on the drive end of the push mechanism, and is used to adapt to pull the adjustment beam body one (37); The push mechanism includes a drive assembly, a control assembly, a bearing assembly, an adjustment assembly and a clamping assembly; the drive assembly is installed in the hydraulic cylinder (1) and is used to drive the bearing assembly to move; the control assembly is connected to the drive assembly and is used to deliver hydraulic oil into the hydraulic cylinder (1); the bearing assembly is connected outside the hydraulic cylinder (1) and is used to connect the pull mechanism; the adjustment assembly is installed on the bearing assembly and is used to determine the required spacing between the beam body one (37) and the beam body two (38); the clamping assembly is installed on the hydraulic cylinder (1) and is used to lock the adjustment assembly; the adjustment assembly adjusts the required spacing between the beam body one (37) and the beam body two (38), the drive assembly drives the bearing assembly to move the beam body one (37), adjusts the spacing between the beam body one (37) and the beam body two (38), and locks the adjustment assembly with the clamping assembly after reaching the specified spacing.

2. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 1, characterized in that, The drive assembly includes a piston shaft (2), an oil discharge pipe (3), a control valve (4), a pipe one (5), a pipe two (6) and a liquid-proof air-permeable part (39); the large end of the piston shaft (2) is sleeved in the hydraulic cylinder (1), and the small end penetrates the hydraulic cylinder (1) to connect the pull mechanism; the two input ends of the oil discharge pipe (3) are connected to the two ends of the hydraulic cylinder (1) respectively; the control valve (4) is connected to the output end of the oil discharge pipe (3); the output ends of the pipe one (5) and the pipe two (6) are connected to the two ends of the hydraulic cylinder (1) respectively, and the input ends are connected to the control assembly; the liquid-proof air-permeable part (39) is connected to the two sides of the hydraulic cylinder (1); the hydraulic oil enters the hydraulic cylinder (1) from the pipe one (5), driving the small end of the piston shaft (2) to move away from the hydraulic cylinder (1); the hydraulic oil enters the hydraulic cylinder (1) from the pipe two (6), driving the small end of the piston shaft (2) to move close to the hydraulic cylinder (1).

3. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 2, characterized in that, The control assembly includes a control cylinder (7), a rectangular plate (8), an elastic member one (9), an elastic member two (10), a blocking block (12), a circular plate (13), an elastic member four (14), an L plate (15) and an injection pipe (27); the two ends of the control cylinder (7) are connected to the input ends of the pipe one (5) and the pipe two (6) respectively; the rectangular plate (8) is installed at the top end of the control cylinder (7); the fixed ends of the elastic member one (9) and the elastic member four (14) are connected to the two sides of the rectangular plate (8) respectively, and the two L plates (15) are installed at the movable ends of the elastic member one (9) and the elastic member four (14) respectively; the fixed ends of the elastic member two (10) and the elastic member three (11) are connected to the control cylinder (7), and the movable ends are connected to the blocking block (12), which is movably sleeved in the control cylinder (7); the two circular plates (13) are installed at one end of the elastic member two (10) and the elastic member three (11) away from the blocking block (12) respectively and are pressed by the L plate (15); the injection pipe (27) is connected to the middle part of the control cylinder (7).

4. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 1, characterized in that, The bearing assembly comprises elastic member five (16), support part (17), driving device three (28), collecting part (29) and connecting chain one (30); both ends of elastic member five (16) are connected with hydraulic cylinder (1) and support part (17) respectively; driving device three (28) is installed outside hydraulic cylinder (1), collecting part (29) is installed on the output shaft of driving device three (28), both ends of connecting chain one (30) are connected with support part (17) and collecting part (29) respectively.

5. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 1, characterized in that, The adjusting assembly comprises bearing part (18), driving device one (19), threaded rod (20), round rod (21) and control block (22); bearing part (18) is installed on the bearing assembly and moves above hydraulic cylinder (1) with the bearing assembly; driving device one (19) is installed outside bearing part (18), and the output shaft thereof is connected with threaded rod (20); round rod (21) is installed inside bearing part (18); control block (22) is screwed on threaded rod (20) and movably sleeved on round rod (21); control block (22) moves along threaded rod (20) to push the movable end of the control assembly to move.

6. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 5, characterized in that, The clamping assembly comprises driving device two (23), lifting plate (24), spring one (25) and plug rod (26); driving device two (23) is installed on hydraulic cylinder (1), lifting plate (24) is installed on the driving end of driving device two (23); both ends of spring one (25) are connected with lifting plate (24) and plug rod (26) respectively; plug rod (26) penetrates lifting plate (24) and is inserted into the limiting groove of control block (22).

7. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 4, characterized in that, The pulling mechanism comprises elastic member six (31), telescopic linkage rod (32) and pulling assembly; both ends of elastic member six (31) are connected with support part (17) and telescopic linkage rod (32) respectively; the other end of telescopic linkage rod (32) is connected with beam body two (38); the pulling assembly is installed on support part (17).

8. The longitudinal pushing device for closure segment of continuous rigid frame bridge according to claim 7, characterized in that, The pulling assembly comprises elastic member seven (33), adjusting plate (34), connecting chain two (35) and connecting hole (36); both ends of elastic member seven (33) are connected with support part (17) and adjusting plate (34) respectively; both ends of connecting chain two (35) are connected with the movable end of driving assembly and adjusting plate (34) respectively; both ends of elastic member seven (33) are connected with support part (17) and adjusting plate (34) respectively; connecting hole (36) is arranged on adjusting plate (34).

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