Bridge frame pushing device and pushing frame construction method

Abstract

The application relates to a bridge frame pushing device and a pushing frame construction method, and relates to the technical field of bridge construction. The bridge frame pushing device comprises a pushing mechanism and a sliding support mechanism which are arranged at intervals on each pier. The pushing mechanism comprises a sliding platform arranged at the top end of the pier, a sliding block arranged on the sliding platform, first joints arranged on the two sides of the sliding block, a contact seat arranged at the top end of the sliding block, an advancing hydraulic cylinder with the piston end fixedly connected with the sliding block and the cylinder body end hinged to the top end of the pier, a deviation rectifying hydraulic cylinder hinged to the two sides of the sliding platform and provided with second joints on the piston end, and a transition hydraulic cylinder arranged at the top end of the pier and used for supporting the frame. The first joints and the second joints are detachably connected, and the deviation rectifying hydraulic cylinder is used for pushing the sliding block from the two sides. The application has the effects of making the deviation rectifying operation more convenient, saving time and labor.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and in particular to a bridge frame jacking device and a jacking frame construction method. Background Technology

[0002] Since Professors Leonhardt and Bauer first used the incremental launching method on the Agger Bridge in Austria in 1959, more than 200 bridges worldwide have adopted this method. The incremental launching method involves setting up a prefabrication yard behind the abutments along the bridge axis, and installing steel guide beams, temporary piers, sliding tracks, and horizontal jacks for force application. Specifically, it is a construction method that uses incremental launching to slide and install the cast-in-place or precast bridge frame onto the piers.

[0003] Regarding the aforementioned technologies, the inventors discovered that during the jacking and advancing of the main frame of the bridge, due to the influence of the objective environment and equipment, it is inevitable that the frame will deviate from the predetermined route. In this case, a correction device is needed to correct the deviation, and a special support frame needs to be erected to provide reliable support for the correction device, which consumes time and manpower. Summary of the Invention

[0004] To make the correction operation more convenient and save time and manpower, this application provides a bridge frame jacking device and a jacking frame construction method.

[0005] Firstly, the bridge frame jacking device provided in this application adopts the following technical solution:

[0006] A bridge frame jacking device includes a jacking mechanism and a sliding support mechanism spaced apart on each pier. The jacking mechanism includes:

[0007] A sliding platform is installed at the top of the bridge pier;

[0008] The slider is slidably mounted on a sliding platform, with first joints on both sides and a contact seat at the top.

[0009] The forward hydraulic cylinder has a piston end fixedly connected to a slider, and the cylinder body end is hinged to the top of the bridge pier.

[0010] The correction hydraulic cylinder is hinged to both sides of the sliding platform, and a second joint is provided on the piston end;

[0011] Transition hydraulic cylinders, installed at the top of the piers, are used to support the frame structure;

[0012] The first connector and the second connector are detachably connected, and the correction hydraulic cylinder is used to push the slider from both sides.

[0013] By adopting the above technical solution, when the frame deviates from the predetermined route, after the forward hydraulic cylinder is fully extended, the correction hydraulic cylinder is activated. The second joint on the piston rod of the correction hydraulic cylinder moves and connects with the first joint. The piston rod continues to move, which will push the slider and the forward hydraulic cylinder to rotate simultaneously, moving the frame a certain distance. By repeatedly pushing the slider with the correction hydraulic cylinder, the directional correction of the frame can be achieved. Compared with the traditional method of erecting supports and pushing from both sides of the frame, no special supports need to be installed. Moreover, correction can be performed during the pushing process, making the correction operation more convenient and saving time and manpower.

[0014] Optionally, the first connector is provided with a horizontally open, vertically penetrating slot, the bottom of the slot is an arc surface, and the piston end of the correction hydraulic cylinder is provided with a vertical rotating shaft.

[0015] By adopting the above technical solution, the piston rod of the correction hydraulic cylinder extends, and the rotating shaft enters the slot and abuts against the bottom of the slot. As the piston rod continues to extend outward, the rotating shaft pushes the slider, causing the frame to move laterally. When the piston rod retracts, the rotating shaft can automatically disengage from the slot.

[0016] Optionally, a rotating ring is rotatably connected to the rotating shaft.

[0017] By adopting the above technical solution, the rotating ring can make the rotation between the rotating shaft and the slider smoother, reduce friction, and facilitate the pushing of the slider.

[0018] Optionally, the pushing mechanism further includes a first reset component, which includes:

[0019] The first guide plate is located on one side of the correction hydraulic cylinder;

[0020] The first guide rod is fixedly connected to the cylinder body of the correction hydraulic cylinder and slides through the first guide plate;

[0021] A first spring is disposed between the first guide plate and the first guide rod, and is used to push the first guide rod to make the correction hydraulic cylinder fit against the first guide plate.

[0022] By adopting the above technical solution, when the piston rod of the correction hydraulic cylinder retracts, the first spring will push the correction hydraulic cylinder against the first guide plate. When the correction hydraulic cylinder is against the first guide plate, it can be ensured that the piston rod of the correction hydraulic cylinder is facing the slot.

[0023] Optionally, a buffer layer is provided on the side wall of the first guide plate facing the correction hydraulic cylinder.

[0024] By adopting the above technical solution, the corrective hydraulic cylinder will collide with the first guide plate when it rotates back. The buffer layer is used to buffer the collision, making the corrective hydraulic cylinder less prone to damage.

[0025] Optionally, a control plate is provided on the cylinder body of the forward hydraulic cylinder, and the pushing mechanism further includes a second reset assembly, which includes:

[0026] There are two second guide plates, which are respectively set on both sides of the forward hydraulic cylinder;

[0027] The second guide rod is connected to the control panel, and its two ends slide through the second guide plate respectively;

[0028] The second spring is located between the second guide plate and the control plate.

[0029] By adopting the above technical solution, when the piston rod of the correction hydraulic cylinder disengages from the slider, the forward hydraulic cylinder will return to the center position under the action of the second spring, aligning with the pushing direction.

[0030] Optionally, the pushing mechanism further includes a limit lock, the limit lock comprising:

[0031] The guide rails are vertically installed at the top of the bridge piers;

[0032] The locking tongue is slidably mounted on the guide rail.

[0033] The lifting cylinder is used to control the raising and lowering of the bolt.

[0034] By adopting the above technical solution, the locking tongue can restrict the position of the control plate, thereby locking the orientation of the forward hydraulic cylinder. The guide rail is used to bear the horizontal force transmitted from the control plate to the locking tongue, protecting the lifting cylinder from excessive lateral force.

[0035] Optionally, the pushing mechanism further includes a reaction baffle coaxial with the hinge shaft of the forward hydraulic cylinder, and the cylinder end of the forward hydraulic cylinder is provided with a reaction slide rod that slides against the reaction baffle.

[0036] By adopting the above technical solution, the end of the reaction slide bar will slide on the surface of the reaction baffle. The reaction baffle supports the reaction slide bar and provides support for the forward hydraulic cylinder when the piston rod of the forward hydraulic cylinder extends to push the slide block.

[0037] Optionally, the sliding support mechanism includes:

[0038] The height of the slide gradually decreases along the traveling direction of the frame on the side of the top away from the jacking platform.

[0039] The hydraulic cylinder is supported and positioned between the top of the pier and the slide block.

[0040] By adopting the above technical solution, the frame structure is in a cantilever state before being connected to the sliding support mechanism. The end away from the fulcrum will bend downward to a certain extent. The inclined surface of the slide can better support the frame structure and guide the frame structure to align with the jacking mechanism when the slide rises.

[0041] Secondly, the incremental launching frame construction method provided in this application adopts the following technical solution:

[0042] A method for constructing a jacking frame structure includes the following steps:

[0043] S1: Install multiple measuring plates at intervals along the axis at the bottom of the frame structure, with all measuring plates overlapping along the extension direction of the frame structure; set a set of jacking mechanisms on the jacking platform for the initial jacking of the frame structure; set a sliding support mechanism and a jacking mechanism at the top of the piers, and set distance measuring instruments on both sides of the end of each pier away from the frame structure.

[0044] S2: Activate the jacking mechanism on the jacking platform to push the frame structure out of the jacking platform until the frame structure moves above the sliding support mechanism on the first pier;

[0045] S3: Start the sliding support mechanism on the first pier to lift the frame structure, continue to push the frame structure to the top of the jacking mechanism on the pier, lower the slide block until the frame structure rests on the slider, and the jacking mechanism continues to perform the jacking operation.

[0046] S4: When the measuring plate passes the distance measuring instrument, the distance between the measuring plate and the measuring instrument is compared to determine whether the frame structure deviates from the predetermined route. If the deviation is less than 5cm, the jacking operation continues. If the deviation is greater than or equal to 5cm, after the forward hydraulic cylinder on the pier completes one jacking operation, the correction hydraulic cylinder is activated to push the slider and the forward hydraulic cylinder to rotate together, causing the frame structure to move at a certain angle. The transition hydraulic cylinder lifts the frame structure, and the forward hydraulic cylinder and correction hydraulic cylinder retract to complete one correction operation. The correction operation is repeated until the frame structure returns to the predetermined route.

[0047] By adopting the above technical solution, it is relatively easy to measure whether there is a large deviation in the frame structure during the jacking process, and to correct the deviation in a timely manner.

[0048] In summary, this application includes at least one of the following beneficial technical effects:

[0049] 1. By repeatedly pushing the slider with the hydraulic cylinder for correction, the directional correction of the frame structure can be achieved. Compared with the traditional method of erecting a support frame and pushing from both sides of the frame structure, no special support frame needs to be installed. Moreover, correction can be performed during the pushing process, making the correction operation more convenient and saving time and manpower.

[0050] 2. The rotating ring makes the rotation between the shaft and the slider smoother, reduces friction, and facilitates pushing the slider.

[0051] 3. When the piston rod of the correction hydraulic cylinder retracts, the first spring will push the correction hydraulic cylinder against the first guide plate. When the correction hydraulic cylinder is against the first guide plate, it can ensure that the piston rod of the correction hydraulic cylinder is facing the slot.

[0052] 4. The locking tongue can restrict the position of the control plate, thereby locking the orientation of the forward hydraulic cylinder. The guide rail is used to bear the horizontal force transmitted from the control plate to the locking tongue, protecting the lifting cylinder from excessive lateral force.

[0053] 5. The end of the reaction slide rod will slide on the surface of the reaction baffle. The reaction baffle supports the reaction slide rod and provides support for the forward hydraulic cylinder when the piston rod of the forward hydraulic cylinder extends to push the slide block. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0055] Figure 2 This is a schematic diagram of the jacking mechanism;

[0056] Figure 3 This is a schematic diagram of the connection structure between the second reset component, the limit lock, and the forward hydraulic cylinder;

[0057] Figure 4 This is a schematic diagram of the jacking frame of the jacking device;

[0058] In the diagram, 1. Pushing mechanism; 11. Sliding platform; 12. Slider; 121. First connector; 1211. Slot; 122. Contact seat; 13. Forward hydraulic cylinder; 131. Control board; 132. Reaction slide rod; 14. Correction hydraulic cylinder; 141. Second connector; 142. Rotating shaft; 143. Rotating ring; 15. Transition hydraulic cylinder; 16. First reset assembly; 161. First guide plate; 1611. Buffer layer; 162. First guide rod; 163. First spring; 17. Second reset assembly; 171. Second guide plate; 172. Second guide rod; 173. Second spring; 18. Limit lock; 181. Guide rail; 182. Locking tongue; 183. Lifting cylinder; 19. Reaction baffle; 2. Sliding support mechanism; 21. Slide seat; 22. Support hydraulic cylinder; 3. Frame structure; 31. Measuring plate; 4. Rangefinder. Detailed Implementation

[0059] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0060] This application proposes a bridge frame jacking device, referring to... Figure 1It includes a jacking mechanism 1 and a sliding support mechanism 2. Two stepped platforms are set at the top of the pier. The sliding support mechanism 2 is set on the lower level and is used to guide and lift the frame structure 3, and is placed on the jacking mechanism 1. The jacking mechanism 1 is set on the higher level and is used for step-by-step jacking of the frame structure 3.

[0061] Two sets of sliding support mechanisms 2 are respectively installed on both sides of the lower level of the stepped platform, including a slide block 21 and a support hydraulic cylinder 22. The support hydraulic cylinder 22 is vertically installed on the lower level of the stepped platform with the piston rod facing upward. The slide block 21 is a cuboid, vertically bolted to the top of the support hydraulic cylinder 22, used to support the frame 3 and allow the frame 3 to slide on it. The top of the slide block 21 has an arc-shaped convex surface on the side near the higher level of the stepped platform, and its height gradually decreases along the direction towards the higher level of the stepped platform. A sliding plate is vertically welded to the end, and the sliding plate slides against the vertical surface of the stepped platform. When the frame 3 slides on the slide block 21, the vertical surface of the stepped platform provides a reaction force to balance the horizontal friction force generated by the movement of the frame 3 on the slide block 21. A triangular reinforcing rib is welded between the sliding plate and the slide block 21. Before the frame structure 3 is connected to the sliding support mechanism 2, it is in a cantilever state. The end away from the fulcrum will be bent downward to a certain extent. The inclined surface of the slide 21 can better support the frame structure 3. After the slide 21 is raised, the frame structure 3 can abut against the top plane of the slide 21.

[0062] Reference Figure 1 and Figure 2 The jacking mechanism 1 includes a sliding platform 11, a slider 12, a forward hydraulic cylinder 13, a correction hydraulic cylinder 14, a transition hydraulic cylinder 15, a first reset assembly 16, a second reset assembly 17, a limit lock 18, and a reaction baffle 19. Multiple mounting plates are provided on the higher level of the stepped platform for mounting the jacking mechanism 1. The sliding platform 11 is rectangular and bolted to the mounting platform. The forward hydraulic cylinder 13 is hinged to the mounting plate, with a reaction slide rod 132 welded to the end of the cylinder body. The hinge shaft is located on the reaction slide rod 132, and a mounting plate is vertically welded to the bottom end. The slider 12 is fixedly connected to the piston rod end of the forward hydraulic cylinder 13 and slides on the sliding platform 11. The top of the slider 12 has a disc-shaped contact seat 122 for increasing friction with the frame 3. First joints 121 are welded to both sides of the slider 12. Each first joint 121 has a U-shaped groove 1211, with the groove opening facing away from the slider 12 and extending vertically through it.

[0063] Reference Figure 2 and Figure 3The reaction baffle 19 is an arc-shaped vertical plate welded to the mounting plate and coaxial with the hinge shaft of the forward hydraulic cylinder 13. An arc-shaped plate is welded to the end of the reaction slide rod 132, and the arc-shaped plate fits against the concave surface of the reaction baffle 19. When the forward hydraulic cylinder 13 pushes the frame 3 forward, the reaction baffle 19 provides a reaction force to the forward hydraulic cylinder 13. Reinforcing ribs are welded between the reaction baffle 19 and the mounting plate. A control plate 131 is vertically welded downwards onto the cylinder sidewall of the forward hydraulic cylinder 13. The second reset assembly 17 includes a second guide plate 171, a second guide rod 172, and a second spring 173. The second guide rod 172 is an arc-shaped rod, coaxially fixed and passed through the control plate 131 with its hinge shaft, and its two ends are symmetrical on both sides of the control plate 131.

[0064] The second guide plate 171 is vertically welded onto the mounting plate. Two guide rods 172 are perpendicularly arranged on both sides of the control plate 131, and the second guide rods 172 slide through the second guide plate 171. Two second springs 173 are provided, respectively sleeved on both ends of the second guide rods 172. The two ends of the second springs 173 abut against the second guide plate 171 and the control plate 131, respectively. In the natural state, the two second springs 173 push the control plate 131 towards the center position.

[0065] The limit lock 18 includes a guide rail 181, a locking tongue 182, and a lifting cylinder 183. Two guide rails 181 are provided, welded parallel and perpendicularly to each other onto the mounting plate. The locking tongue 182 is a U-shaped block with an upper opening of the same width as the control plate 131. Chamfers are provided on the two opposite sidewalls of the opening to facilitate the control plate 131 engaging with it. The locking tongue 182 slides between the two guide rails 181 along their respective directions. The lifting cylinder 183 is positioned between the mounting plate and the locking tongue 182, controlling the rotation of the forward hydraulic cylinder 13 through its lifting mechanism. It also serves to lock the orientation of the forward hydraulic cylinder 13. The guide rails 181 bear the horizontal force transmitted from the control plate 131 to the locking tongue 182, protecting the lifting cylinder 183 from excessive lateral forces.

[0066] Reference Figure 1 and Figure 2 A reaction support is welded onto the mounting plate. The cylinder body of the correction hydraulic cylinder 14 is hinged to the reaction support and can rotate horizontally. A U-shaped second connector 141 is welded to the end of the piston rod of the correction hydraulic cylinder 14. A rotating shaft 142 is vertically welded inside the connecting frame, and a rotating ring 143 is rotatably sleeved on the rotating shaft 142. When the piston rod of the correction hydraulic cylinder 14 extends, the rotating shaft 142 enters the slot 1211, and the rotating ring 143 abuts against the bottom of the slot 1211. As the piston rod continues to extend outward, the rotating shaft 142 pushes the slider 12, causing the frame 3 to produce lateral displacement. When the piston rod retracts, the rotating shaft 142 can automatically disengage from the slot 1211.

[0067] The first reset assembly 16 includes a first guide plate 161, a first guide rod 162, and a first spring 163. The first guide rod 162 is an arc-shaped rod, coaxial with the hinge axis of the correction hydraulic cylinder 14. The first guide plate 161 is vertically welded to the mounting plate, and reinforcing ribs are welded between the first guide plate 161 and the mounting plate. The first guide rod 162 slides through the first guide plate 161, and a convex ring is provided at the end away from the correction hydraulic cylinder 14. The first spring 163 is sleeved on the first guide rod 162, with its two ends abutting against the first guide plate 161 and the convex ring respectively and in a compressed state. A buffer layer 1611 is provided at the end of the first guide plate 161 facing the correction hydraulic cylinder 14. When the correction hydraulic cylinder 14 rotates back, it will collide with the first guide plate 161. The buffer layer 1611 is used to buffer the collision and prevent damage to the correction hydraulic cylinder 14. A set of correction hydraulic cylinders 14 and the first reset assembly 16 are provided on each side of the slider 12 to realize correction of the frame 3 in two directions.

[0068] The transition hydraulic cylinder 15 is vertically mounted on the mounting plate with the piston rod facing upward. It is used to support the frame 3 and disengage it from the slider 12, so that the slider 12 can return to its initial position and repeatedly push the frame 3.

[0069] This application also discloses a method for constructing a jacking frame structure 3, referring to... Figure 4 The steps are as follows:

[0070] The guide beams and bridge beams are assembled on the jacking platform to form a frame structure 3. Multiple measuring plates 31 are installed at intervals along the axis at the bottom of the frame structure 3. The measuring plates 31 are vertical, and all measuring plates 31 overlap along the extension direction of the frame structure 3. A set of jacking mechanisms 1 is installed on the jacking platform for the initial jacking of the frame structure 3. A sliding support mechanism 2 and the jacking mechanism 1 are installed at the top of the piers. Distance measuring instruments 4 are symmetrically installed on both sides of the end of each pier furthest from the frame structure 3 along a predetermined route.

[0071] Start the jacking mechanism 1 on the jacking platform. The forward hydraulic cylinder 13 pushes the slider 12 forward, causing the frame 3 to move. Then the transition hydraulic cylinder 15 lifts the frame 3 off the slider 12. The forward hydraulic cylinder 13 retracts, and the slider 12 returns to its initial position. The frame 3 is lowered and placed back on the slider 12. Repeat the above actions to push the frame 3 out of the jacking platform until the frame 3 moves above the sliding support mechanism 2 on the first pier.

[0072] The sliding support mechanism 2 on the first pier is activated to lift the frame 3, so that the bottom end of the frame 3 away from the jacking platform is higher than the slider 12 on the pier. The frame 3 is pushed until it moves above the slider 12 on the pier. The support hydraulic cylinder 22 is retracted, and the slide seat 21 is lowered until the frame 3 rests on the slider 12. The jacking platform and the jacking mechanism 1 on the first pier work together to perform the jacking operation. The operation is repeated. The jacking mechanism 1, which is no longer needed, can be removed and the frame 3 is supported by the sliding support mechanism 2.

[0073] When the measuring plate 31 passes the distance measuring instrument 4, the distance measuring instrument 4 can measure the distance between itself and the measuring plate 31. By comparing the distances measured by the two distance measuring instruments 4 with the measuring plate 31, it can be determined whether the frame structure 3 deviates from the predetermined route. If the deviation of the frame structure 3 from the predetermined route is less than 5cm, it will not affect the jacking operation, so the jacking operation will continue. If the deviation of the frame structure 3 from the predetermined route is greater than or equal to 5cm, after the forward hydraulic cylinder 13 on the pier completes one jacking operation, the correction hydraulic cylinder 14 is activated, which pushes the slider 12 and the forward hydraulic cylinder 13 to rotate together, so that the frame structure 3 moves at a certain angle. The transition hydraulic cylinder 15 lifts the frame structure 3, and the forward hydraulic cylinder 13 and the correction hydraulic cylinder 14 are contracted to complete one correction operation. The correction operation is repeated until the distance measured by the distance measuring instrument 4 matches the data corresponding to the frame structure 3 moving along the predetermined route. The correction is then stopped, and normal jacking continues until the frame structure 3 is completely in place.

[0074] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bridge frame pushing device, comprising a pushing mechanism (1) and a sliding support mechanism (2) which are arranged at intervals on each pier, characterized in that, The pushing mechanism (1) comprises: A sliding platform (11) is arranged at the top of the pier; A sliding block (12) is arranged on the sliding platform (11), and first joints (121) are arranged on both sides of the sliding block (12), and a contact seat (122) is arranged at the top of the sliding block (12); An advancing hydraulic cylinder (13) is arranged, and the piston end of the advancing hydraulic cylinder (13) is fixedly connected with the sliding block (12), and the cylinder body end of the advancing hydraulic cylinder (13) is hingedly connected with the top of the pier; A deviation correction hydraulic cylinder (14) is arranged on both sides of the sliding platform (11), and a second joint (141) is arranged on the piston end of the deviation correction hydraulic cylinder (14); A transition hydraulic cylinder (15) is arranged at the top of the pier, and the transition hydraulic cylinder (15) is used for supporting the frame structure (3); The first joint (121) and the second joint (141) are detachably connected, and the deviation correction hydraulic cylinder (14) is used for pushing the sliding block (12) from both sides; The pushing mechanism (1) further comprises a first reset assembly (16), and the first reset assembly (16) comprises: A first guide plate (161) is arranged on one side of the deviation correction hydraulic cylinder (14); A first guide rod (162) is fixedly connected to the cylinder body of the deviation correction hydraulic cylinder (14) and slidably penetrates the first guide plate (161); A first spring (163) is arranged between the first guide plate (161) and the first guide rod (162), and the first spring (163) is used for pushing the first guide rod (162) to make the deviation correction hydraulic cylinder (14) abut against the first guide plate (161); A control plate (131) is arranged on the cylinder body of the advancing hydraulic cylinder (13), and the pushing mechanism (1) further comprises a second reset assembly (17), and the second reset assembly (17) comprises: Two second guide plates (171) are arranged on both sides of the advancing hydraulic cylinder (13); Second guide rods (172) are connected to the control plate (131) and slidably penetrate the second guide plates (171); A second spring (173) is arranged between the second guide plates (171) and the control plate (131).

2. A bridge frame pushing device according to claim 1, characterized in that A horizontally-opened and vertically-penetrating clamping groove (1211) is arranged on the first joint (121), the groove bottom of the clamping groove (1211) is a circular arc surface, and the piston end of the deviation correction hydraulic cylinder (14) is provided with a vertical rotating shaft (142).

3. A bridge frame pushing device according to claim 2, characterized in that A rotating ring (143) is rotatably connected to the rotating shaft (142).

4. A bridge frame pushing device according to claim 1, characterized in that, A buffer layer (1611) is arranged on the side wall of the first guide plate (161) facing the deviation correction hydraulic cylinder (14).

5. A bridge frame pushing device according to claim 1, characterized in that, The pushing mechanism (1) further comprises a limiting lock (18), and the limiting lock (18) comprises: A guide rail (181) is vertically arranged at the top of the pier; A lock tongue (182) is slidably arranged on the guide rail (181); A lifting cylinder (183) is used for controlling the lifting of the lock tongue (182).

6. A bridge frame pushing device according to claim 1, characterized in that, The pushing mechanism (1) further comprises a counterforce baffle (19) coaxially arranged with the hinge shaft of the advancing hydraulic cylinder (13), and the cylinder body end of the advancing hydraulic cylinder (13) is provided with a counterforce sliding rod (132) slidably abutting against the counterforce baffle (19).

7. A bridge frame pushing device according to claim 1, characterized in that, The sliding support mechanism (2) comprises: A sliding seat (21) is arranged at the top of the pier, and the height of the sliding seat (21) gradually decreases along the advancing direction of the frame structure (3); A support hydraulic cylinder (22) is arranged between the top of the pier and the sliding seat (21).

8. A method for constructing a push frame structure, applied to the bridge frame pushing device according to any one of claims 1-7, characterized in that, The method comprises the following steps: S1: install multiple measuring plates (31) on the bottom of the frame (3) along the axis, all the measuring plates (31) coincide along the direction of the frame (3) extension; set a group of jacking mechanisms (1) on the jacking platform for initial jacking of the frame (3); set the sliding support mechanism (2) and the jacking mechanism (1) on the top of the pier, and set the range finder (4) on both sides of the end of each pier away from the frame (3); S2: start the jacking mechanism (1) on the jacking platform to push the frame (3) out of the jacking platform to the sliding support mechanism (2) on the first pier; S3: start the sliding support mechanism (2) on the first pier to jack up the frame (3) and continue to jacking the frame (3) to the jacking mechanism (1) on the pier, lower the sliding seat (21) to the frame (3) on the sliding block (12), and continue the jacking work of the jacking mechanism (1); S4: when the measuring plate (31) passes the range finder (4), compare the distance between the range finder (4) and the measuring plate (31) to determine whether the frame (3) deviates from the predetermined route, if the frame (3) deviates from the predetermined route by less than 5cm, continue the jacking work; if the frame (3) deviates from the predetermined route by more than or equal to 5cm, after the forward hydraulic cylinder (13) on the pier completes a jacking, start the correction hydraulic cylinder (14) to push the sliding block (12) and the forward hydraulic cylinder (13) to rotate together, so that the frame (3) moves a certain angle, the transition hydraulic cylinder (15) jacks up the frame (3), the forward hydraulic cylinder (13) and the correction hydraulic cylinder (14) are retracted, and a correction work is completed, the correction work is repeated until the frame (3) returns to the predetermined route.

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