Bridge incremental launching construction supporting cushion block and working method thereof

Abstract

The invention belongs to the technical field of bridge construction, particularly relates to a bridge incremental launching construction supporting cushion block and a working method thereof, and aims to solve the problem that an existing expansion piece is limited in length, so that lifting adjustment cannot be continued when the expansion piece is used on a pier with a large fall, and adjustment is not flexible enough. In order to solve the problems that the pushing direction cannot be changed and the use is inconvenient after a bridge moves and inclines, the following scheme is provided: the device comprises a bottom plate arranged on a temporary pier, four jacking cylinders are arranged at the top of the bottom plate, a same connecting disc is fixedly arranged at the tops of the four jacking cylinders, and a rotating plate is arranged at the top of the connecting disc; through cooperative work of the four jacking cylinders, a bridge is stably lifted, accurate pushing construction of the bridge is achieved through the design of a rotating plate and a pushing cylinder, the pushing direction can be flexibly adjusted according to actual construction requirements due to the existence of an adjusting mechanism, the construction efficiency and flexibility are improved, heightening adjustment can be conducted according to needs, and the construction efficiency is improved. And the flexibility in the use process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a bridge jacking construction support pad and a working method thereof. Background Art

[0002] In the era of rapid development of construction engineering, jacking construction technology has been widely used in the field of bridge and building construction. During the jacking construction process, since bridges and building structures often have curved surfaces and height differences, it is necessary to install pads under the jack to solve the problem of adjusting the horizontal height of the jack.

[0003] After searching, the utility model with the announcement number CN221421709U discloses a transfer support device for bridge jacking. However, the device still has the following disadvantages during use:

[0004] 1. During use, the length of the telescopic device is limited. When facing a bridge pier with a large drop, it is impossible to continue to lift and lower it, resulting in inflexible adjustment;

[0005] 2. After the bridge moves and tilts, the device cannot change the pushing direction, which makes it inconvenient to use. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art that the length of the telescopic device is limited during use, and it is impossible to continue to lift and lower when used on bridge piers with a large drop, making the adjustment not flexible enough; and after the bridge moves and tilts, the pushing direction cannot be changed, making it inconvenient to use. A bridge jacking construction support pad and a working method thereof are proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A bridge jacking construction support pad comprises a bottom plate arranged on a temporary pier, four jacking cylinders are arranged on the top of the bottom plate, a same connecting plate is fixedly arranged on the top of the four jacking cylinders, a rotating plate is arranged on the top of the connecting plate, a sliding frame is fixedly arranged on the top of the rotating plate, a sliding block is slidably arranged in the sliding frame, two push cylinders are penetrated on one side of the sliding frame, and the output ends of the two push cylinders are fixedly connected to the sliding block for jacking the bridge;

[0009] An adjustment mechanism, arranged on the connecting plate, for adjusting the pushing direction;

[0010] Four groups of cushion blocks, all of which are arranged on the bottom plate and used in conjunction with the lifting cylinder to increase the lifting height of the lifting cylinder, and each group of cushion blocks is stepped and increases in height in sequence;

[0011] A support block, which is rotatably arranged on the bottom plate and is used to support the lowered connection plate after rotation, and to suspend the lifting cylinder;

[0012] The first oil cylinder is arranged on the top of the bottom plate, and the output end of the first oil cylinder is transmission-connected with the support block and the cushion block, so as to drive the support block and the cushion block to rotate in turn.

[0013] In a possible design, the adjustment mechanism includes two groups of first rotating seats fixed on the outer wall of the connecting disk, the rotating plate is rotatably arranged on the top of the connecting disk, and two second rotating seats are arranged at the bottom of the rotating plate. The same adjustment cylinder is rotatably arranged between the second rotating seat and the first rotating seat on the same side, which is used to adjust the output direction of the push cylinder.

[0014] In a possible design, a mounting shaft is rotatably provided on the top of the sliding block, a rotating disk that contacts the bridge is fixedly provided on the top of the mounting shaft, and a limiting member is provided between the rotating disk and the connecting disk for controlling the rotation of the rotating disk to prevent the rotating disk from rotating during pushing.

[0015] In a possible design, four limit rods are fixedly provided on the side of the connecting disk and the base plate that are close to each other, the outer walls of the four limit rods on the same side are slidingly sleeved with the same lifting seat, and the same connecting shaft is rotatably provided between the two lifting seats, the support block is fixedly sleeved on the connecting shaft, the outer wall of the limit rod is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the outer wall of the limit rod and the outer side of the lifting seat, so as to keep the support block between the connecting disk and the base plate, and can automatically adjust the height according to the distance between the connecting disk and the base plate.

[0016] In a possible design, the outer wall of the connecting shaft is rotatably sleeved with two sliding seats, and the sliding seats are fixedly arranged on the outside of the corresponding lifting seats. The outer wall of the connecting shaft is provided with a gear located in the sliding seat through a one-way bearing sleeve, and a first rack meshing with the gear is slidably arranged in the sliding seat, and one end of the two first racks is connected to the output end of the first oil cylinder.

[0017] In a possible design, a rotating shaft is rotatably provided inside each group of the pads, and the rotating shaft is fixed on the top of the base plate. The outer wall of each group of the pads is provided with a gear disk through a one-way bearing sleeve, and two second racks are slidably provided on the top of the base plate. The second racks are meshed with the corresponding two gear disks, and the two second racks are connected to the output end of the first oil cylinder.

[0018] In a possible design, a sliding bar is provided on the top of the base plate, the output end of the first oil cylinder is fixedly connected to the sliding bar, the two second racks are fixedly connected to the sliding bar, two first guide rods are fixedly provided on the top of the sliding bar, the outer wall sliding sleeves of the two first guide rods are provided with the same lifting rod, two sliding rods are penetrated on one side of the lifting rod, and the two sliding rods are respectively fixedly connected to the corresponding first racks, and drive the support block to rotate when the first oil cylinder is extended, and drive the pad block to rotate when it is reset.

[0019] In a possible design, a first pin corresponding to the sliding rod is slidably provided on the top of the lifting rod, the sliding rod is slidably provided on the lifting rod, a first jack used in conjunction with the first pin is opened on the outer wall of the sliding rod, a first electromagnet block is fixedly provided on the top of the first pin, a second spring is sleeved on the outer wall of the first pin, two ends of the second spring are respectively fixedly connected to the first electromagnet block and the lifting rod on one side close to each other, a mounting bracket corresponding to the first pin is fixedly provided on the top of the lifting rod, and a second electromagnet block used in conjunction with the first electromagnet block is fixedly provided on the bottom of the mounting bracket for controlling the movement of the sliding rod.

[0020] In one possible design, the limit member includes a mounting hole opened on the sliding block, a third electromagnet block is fixedly provided on the bottom wall of the mounting hole, a second pin column and a fourth electromagnet block are slidably provided in the mounting hole, the second pin column is fixed on the fourth electromagnet block, the outer wall of the second pin column is sleeved with a tension spring located in the mounting hole, the two ends of the tension spring are respectively fixedly connected to the top of the fourth electromagnet block and the top wall of the mounting hole, and a plurality of second sockets used in conjunction with the second pin columns are opened at the bottom of the rotating disk.

[0021] A working method for a bridge jacking construction support pad comprises the following steps:

[0022] S1. Device installation and initial lifting: install the device on the temporary pier;

[0023] Start the lifting cylinder to drive the rotating plate to move upwards and lift the bridge;

[0024] Start the push cylinder, extend it and drive the sliding block to move in the sliding frame, and drive the bridge to move through the rotating disk;

[0025] S2. Adjust the pushing direction of the bridge: start the third and fourth electromagnet blocks to release the limit of the rotating disk;

[0026] Start the two adjustment cylinders to drive the sliding frame to rotate and adjust the direction of the push cylinder;

[0027] After the adjustment is completed, the electromagnet block is turned off, and the second pin is driven by the tension spring to be inserted into the second plug hole to limit the rotating disk and then push it;

[0028] S3. Adjust the lifting height of the rotating plate: start the lifting cylinder to fully extend it;

[0029] Start the first oil cylinder, extend it and drive the support block to rotate;

[0030] Then start the lifting cylinder to retract it and place the connecting plate on the support block;

[0031] S4. Select a suitable pad: start the first oil cylinder again, retract it and drive the pad to rotate;

[0032] Select a suitable pad and move it under the lifting cylinder;

[0033] S5, final lifting work: start the lifting cylinder, extend it and perform the lifting work.

[0034] In the present application, the device is first installed on the temporary pier, and then the jacking cylinder is started to extend to drive the connecting plate to move upward. The upward movement of the connecting plate can drive the sliding frame to move upward through the rotating plate, and can drive the rotating plate to move upward to lift the bridge. Then the push cylinder is started to extend to drive the sliding block to move in the sliding frame. During the movement, the friction between the rotating plate and the bridge can drive the bridge to move, and the jacking action can be performed.

[0035] When it is necessary to adjust the pushing direction of the bridge, start the third electromagnet block and the fourth electromagnet block to make them adsorbed, which can drive the second pin to move downward, so that the second pin is disengaged from the second socket, and the limit on the rotating disk is released, and the two adjusting cylinders are started to extend. The extension of the adjusting cylinders can drive the rotating plate to rotate on the connecting disk, and can drive the sliding frame to rotate, and rotate to adjust the direction of the push cylinder. After the adjustment is completed, close the third electromagnet block and the fourth electromagnet block, and drive the second pin to be inserted into the second socket through the tension spring to limit the rotating disk, and then push;

[0036] When the lifting height of the rotating disk needs to be adjusted, the lifting cylinder is first started to fully extend. During the extension process, the limit rod below can be driven upward by the connecting disk, and the lifting seat can be driven upward by the first spring, and the sliding rod can be driven upward by the first rack. The upward movement of the sliding rod can drive the lifting rod to move on the first guide rod, so that the lifting seat is between the connecting disk and the bottom plate, and then the first oil cylinder is started to extend, which can drive the sliding bar to move. The movement of the sliding bar can drive the lifting rod to move through the first guide rod. The movement of the lifting rod can drive the first pin to move. During the movement of the first pin, the sliding rod can be driven to move through the first jack. The movement of the sliding rod can drive the first rack to move. During the movement of the first rack, the connecting shaft can be driven to rotate through the gear, which drives the support block to rotate. When the lifting cylinder is started to retract, the connecting disk is placed on the support block. During the movement of the sliding bar, the gear disc can also be driven to rotate. Due to the effect of the one-way bearing, the rotation of the gear disc will not drive multiple pads to rotate.

[0037] Secondly, start the first oil cylinder to retract, and during the retraction process, the sliding rod and the first guide rod are driven to reset and move. Due to the effect of the one-way bearing on the connecting shaft, the first rack will not drive the support block to reset and rotate during the reset movement, but the reset movement of the first guide rod can drive the gear plate to rotate, and the rotation of the gear plate can drive the pad block to rotate through the one-way bearing, and drive the pad block to move to the bottom of the jacking cylinder. When the moved pad block is still low, start the second electromagnet block and the gear to drive the first pin column to move upward, which can drive the first pin column away from the first plug hole, and then continue to start the first oil cylinder to telescope and move to drive the pad block to rotate, until the appropriate pad block moves to the bottom of the jacking cylinder;

[0038] After the adjustment is completed, the second electromagnet block and the first electromagnet block are closed. At this time, the first pin can be inserted into the first jack under the action of the second spring, and then the first oil cylinder is started to extend and drive the support block to rotate, so that the support block is in a horizontal state.

[0039] Finally, start the lifting cylinder to extend and perform the lifting work.

[0040] Beneficial effects:

[0041] In the present invention, the bridge jacking construction support pad block, through the arrangement of four groups of stepped pad blocks, not only increases the jacking height of the jacking cylinder, but also provides multi-level support options to meet the jacking requirements of bridges of different heights, and the support block and the pad block are used in coordination with the first oil cylinder to realize automatic rotation adjustment, reduce manual operations, improve construction efficiency, and reduce labor intensity;

[0042] In the present invention, the bridge jacking construction support pad block realizes precise adjustment of the rotating plate and the upper sliding frame and the pushing cylinder by adjusting the rotation of the cylinder between the two groups of first rotating seats and the second rotating seats, thereby ensuring that the output direction of the pushing cylinder meets the construction requirements, improving the accuracy and reliability of the jacking operation, and the design of the limiter effectively controls the rotation of the rotating disk during the pushing process, avoiding the deviation or instability caused by the rotation, and ensuring the smooth progress of the jacking operation and the safety of the bridge structure;

[0043] In the present invention, the bridge jacking construction support pad block, through the cooperation of the limit rod and the lifting seat, combined with the elastic force of the first spring, enables the support block to automatically adjust the height as the distance between the connecting plate and the bottom plate changes, thereby maintaining the stability and supporting force of the support block, and effectively avoiding the support block from conflicting with the connecting plate and the bottom plate during rotation, thereby improving the stability during use;

[0044] In the present invention, the bridge jacking construction support pad realizes the control of the sliding rod through the combination of the first pin column, the first plug hole, the first electromagnet block, the second spring and the second electromagnet block, so that the position of the pad can be adjusted multiple times independently, and it is convenient to adjust to a suitable height;

[0045] In the present invention, four jacking cylinders work together to stably lift the bridge, and the design of the rotating plate and the push cylinder enables precise jacking construction of the bridge. The existence of the adjustment mechanism allows the pushing direction to be flexibly adjusted according to actual construction needs, thereby improving construction efficiency and flexibility, and can be raised and adjusted as needed, thereby improving flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A schematic diagram of the three-dimensional structure of a bridge jacking construction support pad proposed by the present invention;

[0047] Figure 2 This is a schematic diagram of the installation position structure of a jacking cylinder of a bridge jacking construction support pad proposed by the present invention;

[0048] Figure 3 A schematic diagram of a support block installation structure of a bridge jacking construction support pad block proposed by the present invention;

[0049] Figure 4 This is a schematic diagram of the connection structure of the sliding rod and the lifting rod of the supporting pad block for bridge jacking construction proposed by the present invention;

[0050] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0051] Figure 6A schematic diagram of a pad installation structure of a bridge jacking construction support pad proposed by the present invention;

[0052] Figure 7 This is a schematic diagram of the connection structure between the sliding bar and the second rack of a bridge jacking construction support pad proposed by the present invention;

[0053] Figure 8 The present invention provides a schematic diagram of the connection structure between a push block and a rotating block of a bridge jacking construction support pad.

[0054] In the figure: 1, temporary pier; 2, bottom plate; 3, rotating plate; 4, sliding frame; 5, rotating plate; 6, connecting plate; 7, lifting cylinder; 8, first rotating seat; 9, second rotating seat; 10, adjusting cylinder; 11, supporting block; 12, cushion block; 13, limiting rod; 14, first spring; 15, lifting seat; 16, connecting shaft; 17, gear; 18, sliding seat; 19, first rack; 20, sliding rod; 21, first oil cylinder; 22, sliding bar; 23, The first guide rod; 24, the lifting rod; 25, the first socket; 26, the first pin; 27, the first electromagnet block; 28, the second spring; 29, the mounting frame; 30, the second electromagnet block; 31, the rotating shaft; 32, the gear plate; 33, the second rack; 34, the push cylinder; 35, the sliding block; 36, the mounting shaft; 37, the mounting hole; 38, the third electromagnet block; 39, the fourth electromagnet block; 40, the second pin; 41, the tension spring; 42, the second socket. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0056] Example 1

[0057] Reference Figure 1-Figure 8 A bridge jacking construction support pad, which is used in the field of bridge construction, includes: a base plate 2 on a temporary pier 1, four jacking cylinders 7 are arranged on the top of the base plate 2, the tops of the four jacking cylinders 7 are fixedly connected to a connecting plate 6, the top of the connecting plate 6 is provided with a rotating plate 3, a sliding frame 4 is fixed on the rotating plate 3, a sliding block 35 is designed inside the sliding frame 4, the sliding block 35 can slide freely in the sliding frame 4, two push cylinders 34 are installed on one side of the sliding frame 4, the output ends of the two push cylinders 34 are fixedly connected to the sliding block 35, and the jacking operation of the bridge is realized by the extension and retraction of the push cylinders 34.

[0058] In order to adjust the pushing direction, an adjusting mechanism is provided, which is installed on the connecting plate 6 and can adjust the orientation of the rotating plate 3 and the sliding frame 4 as required, thereby achieving precise control of the pushing direction of the bridge.

[0059] Two groups of first rotating seats 8 are fixedly installed on the outer wall of the connecting disk 6, and each group includes two first rotating seats 8 arranged opposite to each other. At the same time, two second rotating seats 9 are arranged at the bottom of the rotating plate 3, and their positions correspond to the first rotating seats 8. The same adjusting cylinder 10 is rotatably installed between the second rotating seat 9 and the first rotating seat 8 on the same side. One end of the adjusting cylinder 10 is hinged to the first rotating seat 8, and the other end is hinged to the second rotating seat 9. By extending and retracting the adjusting cylinder 10, the angle of the rotating plate 3 relative to the connecting disk 6 can be changed, thereby adjusting the output direction of the push cylinder 34, and realizing flexible adjustment of the pushing direction.

[0060] The mounting shaft 36 is rotatably mounted on the top of the sliding block 35, and the top of the mounting shaft 36 is fixedly connected to a rotating disk 5 that contacts the bridge. The rotating disk 5 is used to directly contact and push the bridge to ensure stability during the pushing process.

[0061] In addition, in order to increase the lifting height of the lifting cylinder 7, four groups of pads 12 are arranged on the base plate 2. Each group of pads 12 increases in height in a step-like manner and is used in conjunction with the lifting cylinder 7. When the lifting height needs to be increased, it can be achieved by selecting pads 12 in different positions.

[0062] In order to support the lowered connection plate 6 and to suspend the lifting cylinder 7, a support block 11 is designed. The support block 11 is rotatably arranged on the base plate 2. When the lifting cylinder 7 descends, the support block 11 can be rotated to a suitable position to support the connection plate 6.

[0063] In order to realize the rotation adjustment of the support block 11 and the cushion block 12, a first oil cylinder 21 is arranged on the top of the base plate 2, and the output end of the first oil cylinder 21 is connected to the support block 11 and the cushion block 12 through a transmission mechanism. Specifically, four limit rods 13 are fixedly provided on the side close to each other of the connecting disk 6 and the base plate 2, and the outer walls of the four limit rods 13 on the same side are slidingly sleeved with the same lifting seat 15, and the same connecting shaft 16 is rotatably provided between the two lifting seats 15. The support block 11 is fixedly sleeved on the connecting shaft 16, and the outer wall of the limit rod 13 is sleeved with a first spring 14. The two ends of the first spring 14 are respectively fixedly connected to the outer wall of the limit rod 13 and the outer side of the lifting seat 15 to keep the support block 11 between the connecting disk 6 and the base plate 2, and can automatically adjust the height according to the distance between the connecting disk 6 and the base plate 2.

[0064] Furthermore, the outer wall of the connecting shaft 16 is rotatably sleeved with two sliding seats 18, and the sliding seats 18 are fixedly arranged on the outer side of the corresponding lifting seats 15. The outer wall of the connecting shaft 16 is sleeved with a gear 17 located in the sliding seat 18 through a one-way bearing, and a first rack 19 meshing with the gear 17 is slidably provided in the sliding seat 18. One ends of the two first racks 19 are connected to the output end of the first oil cylinder 21. When the first oil cylinder 21 is extended, the support block 11 is driven to rotate through the meshing action of the first rack 19 and the gear 17.

[0065] A rotating shaft 31 is rotatably provided in each group of cushion blocks 12, and the rotating shaft 31 is fixedly provided on the top of the base plate 2. A toothed disc 32 is provided on the outer wall of each group of cushion blocks 12 through a one-way bearing sleeve. Two second racks 33 are slidably provided on the top of the base plate 2. The second racks 33 are meshed with the corresponding two toothed discs 32. The two second racks 33 are connected to the output end of the first oil cylinder 21. When the first oil cylinder 21 is reset, the cushion blocks 12 are driven to rotate through the meshing action of the second racks 33 and the toothed discs 32.

[0066] Example 2

[0067] refer to Figure 1-Figure 8 , improved on the basis of Example 1: in order to prevent unnecessary rotation of the rotating disk 5 during the pushing process, a limit piece is designed for fixing. Specifically, a mounting hole 37 is opened on the sliding block 35, and the third electromagnet block 38 is fixedly installed on the bottom wall of the mounting hole 37. At the same time, the second pin 40 and the fourth electromagnet block 39 are slidably installed in the mounting hole 37, and the second pin 40 is fixedly connected to the fourth electromagnet block 39. The outer wall of the second pin 40 is sleeved with a tension spring 41, and the two ends of the tension spring 41 are respectively fixedly connected to the top of the fourth electromagnet block 39 and the top wall of the mounting hole 37. A plurality of second plug holes 42 used in conjunction with the second pin 40 are opened at the bottom of the rotating disk 5. When the rotating disk 5 needs to be fixed, the magnetism of the third electromagnet block 38 and the fourth electromagnet block 39 is controlled so that the second pin 40 is inserted into the corresponding second plug hole 42 to achieve the limited fixing of the rotating disk 5.

[0068] In order to achieve the above functions, a sliding bar 22 is also slidably provided on the top of the base plate 2, the output end of the first oil cylinder 21 is fixedly connected to the sliding bar 22, the two second racks 33 are fixedly connected to the sliding bar 22, and two first guide rods 23 are fixedly provided on the top of the sliding bar 22. The outer wall sliding sleeves of the two first guide rods 23 are provided with the same lifting rod 24. Two sliding rods 20 are penetrated on one side of the lifting rod 24. The two sliding rods 20 are respectively fixedly connected to the corresponding first racks 19, and drive the support block 11 to rotate when the first oil cylinder 21 is extended, and drive the cushion block 12 to rotate when it is reset.

[0069] In order to realize the independent rotation of the cushion block 12, a first pin column 26 corresponding to the sliding rod 20 is slidably provided on the top of the lifting rod 24, and the sliding rod 20 is slidably provided on the lifting rod 24. The outer wall of the sliding rod 20 is provided with a first socket 25 used in conjunction with the first pin column 26. A first electromagnet block 27 is fixedly provided on the top of the first pin column 26, and a second spring 28 is sleeved on the outer wall of the first pin column 26. The two ends of the second spring 28 are respectively fixedly connected to the first electromagnet block 27 and the side close to each other of the lifting rod 24. A mounting frame 29 corresponding to the first pin column 26 is fixedly provided on the top of the lifting rod 24, and a second electromagnet block 30 used in conjunction with the first electromagnet block 27 is fixedly provided on the bottom of the mounting frame 29, which is used to control the movement of the sliding rod 20, so that the extension and retraction of the first oil cylinder 21 can only drive the movement of the second rack 33.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge jacking construction support pad, characterized in that: It comprises a base plate (2) arranged on a temporary pier (1), four lifting cylinders (7) are arranged on the top of the base plate (2), a same connecting plate (6) is fixedly arranged on the top of the four lifting cylinders (7), a rotating plate (3) is arranged on the top of the connecting plate (6), a sliding frame (4) is fixedly arranged on the top of the rotating plate (3), a sliding block (35) is slidingly arranged in the sliding frame (4), two push cylinders (34) are penetrated on one side of the sliding frame (4), the output ends of the two push cylinders (34) are fixedly connected to the sliding block (35) for pushing the bridge; An adjustment mechanism, arranged on the connecting plate (6) and used for adjusting the pushing direction; Four groups of cushion blocks (12), all of which are arranged on the bottom plate (2) and are used in conjunction with the lifting cylinder (7) to increase the lifting height of the lifting cylinder (7), and each group of cushion blocks (12) is stepped and increases in height in sequence; A support block (11), the support block (11) being rotatably disposed on the bottom plate (2), and being used to support the lowered connection plate (6) and to suspend the lifting cylinder (7) after rotation; A first oil cylinder (21), wherein the first oil cylinder (21) is arranged on the top of the base plate (2), and an output end of the first oil cylinder (21) is transmission-connected to the support block (11) and the cushion block (12), and is used to drive the support block (11) and the cushion block (12) to rotate in turn.

2. A bridge jacking construction support pad according to claim 1, characterized in that: The adjustment mechanism comprises two groups of first rotating seats (8) fixedly arranged on the outer wall of the connecting disk (6); the rotating plate (3) is rotatably arranged on the top of the connecting disk (6); two second rotating seats (9) are arranged at the bottom of the rotating plate (3); and the same adjustment cylinder (10) is rotatably arranged between the second rotating seat (9) and the first rotating seat (8) on the same side, for adjusting the output direction of the push cylinder (34).

3. A bridge jacking construction support pad according to claim 2, characterized in that: The top of the sliding block (35) is rotatably provided with a mounting shaft (36), the top of the mounting shaft (36) is fixedly provided with a rotating disk (5) that contacts the bridge, and a limiting member is provided between the rotating disk (5) and the connecting disk (6) for controlling the rotation of the rotating disk (5) to prevent the rotating disk (5) from rotating when pushing.

4. A bridge jacking construction support pad according to claim 1, characterized in that: Four limiting rods (13) are fixedly provided on the mutually adjacent sides of the connecting disk (6) and the bottom plate (2); the outer walls of the four limiting rods (13) on the same side are slidably sleeved with a same lifting seat (15); a same connecting shaft (16) is rotatably provided between the two lifting seats (15); the supporting block (11) is fixedly sleeved on the connecting shaft (16); the outer wall of the limiting rod (13) is sleeved with a first spring (14); the two ends of the first spring (14) are respectively fixedly connected to the outer wall of the limiting rod (13) and the outer side of the lifting seat (15), so as to keep the supporting block (11) between the connecting disk (6) and the bottom plate (2), and can automatically adjust the height according to the distance between the connecting disk (6) and the bottom plate (2).

5. A bridge jacking construction support pad according to claim 4, characterized in that: The outer wall of the connecting shaft (16) is rotatably sleeved with two sliding seats (18), and the sliding seats (18) are fixedly arranged on the outer sides of the corresponding lifting seats (15). The outer wall of the connecting shaft (16) is sleeved with a gear (17) located in the sliding seat (18) through a one-way bearing, and a first rack (19) meshing with the gear (17) is slidably arranged in the sliding seat (18), and one end of the two first racks (19) is connected to the output end of the first oil cylinder (21).

6. A bridge jacking construction support pad according to claim 5, characterized in that: A rotating shaft (31) is rotatably provided in each group of the cushion blocks (12), and the rotating shaft (31) is fixedly provided on the top of the base plate (2). A toothed disc (32) is provided on the outer wall of each group of the cushion blocks (12) via a one-way bearing sleeve. Two second racks (33) are slidably provided on the top of the base plate (2), and the second racks (33) are meshed with the corresponding two toothed discs (32). The two second racks (33) are connected to the output end of the first oil cylinder (21).

7. A bridge jacking construction support pad according to claim 6, characterized in that: A sliding bar (22) is slidably provided on the top of the bottom plate (2); the output end of the first oil cylinder (21) is fixedly connected to the sliding bar (22); the two second racks (33) are fixedly connected to the sliding bar (22); two first guide rods (23) are fixedly provided on the top of the sliding bar (22); the outer wall sliding sleeves of the two first guide rods (23) are provided with the same lifting rod (24); two sliding rods (20) are penetrated on one side of the lifting rod (24); the two sliding rods (20) are respectively fixedly connected to the corresponding first racks (19); when the first oil cylinder (21) is extended, the supporting block (11) is driven to rotate; when the first oil cylinder (21) is reset, the cushion block (12) is driven to rotate.

8. A bridge jacking construction support pad according to claim 7, characterized in that: A first pin column (26) corresponding to the sliding rod (20) is slidably provided on the top of the lifting rod (24); the sliding rod (20) is slidably provided on the lifting rod (24); a first insertion hole (25) for use with the first pin column (26) is provided on the outer wall of the sliding rod (20); a first electromagnet block (27) is fixedly provided on the top of the first pin column (26); a second spring (28) is sleeved on the outer wall of the first pin column (26); two ends of the second spring (28) are respectively fixedly connected to the first electromagnet block (27) and the lifting rod (24) on one side close to each other; a mounting frame (29) corresponding to the first pin column (26) is fixedly provided on the top of the lifting rod (24); a second electromagnet block (30) for use with the first electromagnet block (27) is fixedly provided on the bottom of the mounting frame (29) for controlling the movement of the sliding rod (20).

9. A bridge jacking construction support pad according to claim 3, characterized in that: The limiting member comprises a mounting hole (37) provided on the sliding block (35), a third electromagnet block (38) being fixedly provided on the bottom wall of the mounting hole (37), a second pin column (40) and a fourth electromagnet block (39) being slidably provided in the mounting hole (37), the second pin column (40) being fixedly provided on the fourth electromagnet block (39), an outer wall of the second pin column (40) being sleeved with a tension spring (41) located in the mounting hole (37), two ends of the tension spring (41) being fixedly connected to the top of the fourth electromagnet block (39) and the top wall of the mounting hole (37) respectively, and a plurality of second plug holes (42) for use with the second pin column (40) being provided at the bottom of the rotating disk (5).

10. A working method for a bridge jacking construction support pad according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Device installation and initial lifting: Install the device on the temporary pier (1); The lifting cylinder (7) is started to drive the rotating plate (5) to move upwards and lift the bridge; The push cylinder (34) is started to extend and drive the sliding block (35) to move in the sliding frame (4), and the bridge is driven to move through the rotating disk (5); S2, adjusting the pushing direction of the bridge: starting the third electromagnet block (38) and the fourth electromagnet block (39) to release the limit of the rotating disk (5); Start the two adjustment cylinders (10) to drive the sliding frame (4) to rotate and adjust the direction of the push cylinder (34); After the adjustment is completed, the electromagnet block is turned off, and the second pin (40) is driven by the tension spring (41) to be inserted into the second insertion hole (42), so as to limit the position of the rotating disk (5) and then push it; S3. Adjust the lifting height of the rotating disk: start the lifting cylinder (7) to fully extend it; Starting the first oil cylinder (21) to extend and drive the support block (11) to rotate; Then start the lifting cylinder (7) to retract it and place the connecting plate (6) on the supporting block (11); S4, select a suitable cushion block: start the first oil cylinder (21) again, retract and drive the cushion block (12) to rotate; Select a suitable cushion block (12) and move it to the bottom of the lifting cylinder (7); S5, final lifting work: start the lifting cylinder (7), extend it and perform the lifting work.

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