Arch bridge support device and support method for river channel

Abstract

The present invention discloses an arch bridge supporting device for a river channel and a supporting method. A driving mechanism is started to rotate four active rotating shafts, and the four active rotating shafts then rotate four corresponding active gears, and the four active gears then rotate four meshing driven gears, and the four driven gears then rotate the corresponding driven rotating shafts, and the four driven rotating shafts then rotate four storage arms, and the four storage arms respectively drive four load-bearing hydraulic cylinders to rotate out of one side of four arc-shaped storage grooves, and then the four load-bearing hydraulic cylinders are started, and the four load-bearing hydraulic cylinders drive four hydraulic telescopic rods, so that the entire device can be supported, the telescopic rods are telescoped downward, and the four sliding columns respectively slide downward in the sliding grooves in the four fixed cylinders, so as to have a certain buffering effect on excessive pressure on the bridge deck and downward movement of the telescopic rods.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge support devices, and in particular to an arch bridge support device for a river and a support method. Background Art

[0002] An arch bridge is a bridge with a semicircular convex arc. Its main materials are masonry and reinforced concrete. Its scope of application depends on the materials. The span ranges from tens of meters to more than 300 meters. The largest span reinforced concrete arch bridge in China is 170 meters. The arch ribs are the main load-bearing components. The force characteristics are that the arch ribs bear pressure and there is horizontal thrust at the supports, and the span capacity is large. Compared with steel bridges and reinforced concrete beam bridges, it can save a lot of steel and cement. It is durable and has low maintenance and repair costs. It has a beautiful appearance. The structure is relatively simple, which is conducive to widespread adoption. At the same time, since it is a thrust structure, it has high requirements for the foundation. For multi-hole continuous arch bridges, in order to prevent the damage of one hole from affecting the entire bridge, special measures must be taken or one-way thrust piers must be set to withstand the unbalanced thrust, which increases the project cost. When building arch bridges in plain areas, due to the high building height, the connection projects at both ends and the longitudinal slope of the bridge deck increase, which is extremely unfavorable for driving.

[0003] In current life, most of the river arch bridges left over from history are used as tourist attractions. Due to their long history, their safety is not very high. When encountering a large passenger flow, the limited bearing capacity of the bridge can easily lead to accidents such as bridge breakage, which in turn causes personal injury to tourists. Therefore, we disclose a river arch bridge support device to meet the support needs of river arch bridges in tourist attractions. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an arch bridge support device for a river channel, which has the advantages of being able to support arch bridges with different curvatures and being easy to support, thereby solving the problem that the limited bearing capacity of the bridge may easily lead to unexpected situations such as bridge breakage.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arch bridge support device for a river, comprising an operating platform, a driving mechanism is fixedly connected to the bottom of the operating platform, a movable crawler is arranged below the driving mechanism, four active rotating grooves and four driven rotating grooves are opened at the bottom of the driving mechanism, the positions of the four active rotating grooves and the four driven rotating grooves correspond to each other, a driving shaft and a driven shaft are rotatably connected in the four active rotating grooves and the four driven rotating grooves respectively, a driving gear is rotatably sleeved on one side of the four active rotating shafts, and the four driven rotating shafts are rotatably sleeved on one side. A driven gear is fixedly sleeved on one side of the dynamic rotating shaft, and the driving gear and the driven gear at the same position are meshed with each other. A storage arm is fixedly sleeved on one side of the four driven rotating shafts, and a load-bearing hydraulic cylinder is fixedly sleeved in the four storage arms. The bottom ends of the four storage arms are fixedly connected to hydraulic telescopic rods, and the bottom ends of the four hydraulic telescopic rods are fixedly connected to a load-bearing chassis. Two arc-shaped storage grooves are provided on both sides of the operating table away from each other, and the positions of the four arc-shaped storage grooves correspond to and match the positions of the four load-bearing hydraulic cylinders.

[0008] Preferably, the bottoms of the four load-bearing chassis are fixedly connected to pressure sensors, the tops of the four load-bearing chassis are fixedly connected to controllers, one side of the four controllers are fixedly connected to pressure wires, the other ends of the four pressure wires are respectively connected to corresponding pressure sensors, the tops of the four load-bearing hydraulic cylinders are fixedly connected to control elements, and the tops of the four controllers are fixedly connected to control wires.

[0009] Preferably, the other ends of the four control wires are connected to the control element, the four controllers are electrically connected to the corresponding four pressure wires and the four control wires, the top of the operating table is fixedly connected to a lifting hydraulic cylinder, the top of the lifting hydraulic cylinder is fixedly connected to a height lifting and retraction rod, the top of the height lifting and retraction rod is fixedly connected to a lifting base, and the top of the operating table is fixedly connected to four fixed cylinders.

[0010] Preferably, the top ends of the four fixed cylinders are each provided with a slide groove, the four slide grooves are each slidably sleeved with a slide column, the bottom ends of the four slide columns are each fixedly connected with a sealing rubber pad, the four sealing rubber pads are respectively located in the corresponding slide grooves, the top ends of the four sliding columns are each connected to the lifting base, a plurality of evenly distributed ventilation holes are each provided on one side of the four fixed cylinders, the plurality of evenly distributed ventilation holes are respectively interconnected with the four slide grooves, and when in use, the air intake speed of the plurality of ventilation holes is adapted to the rising speed of the sliding column.

[0011] Preferably, the top of the lifting base is fixedly connected to a T-shaped base, two fixed shafts are fixedly connected inside the T-shaped base, the top of the T-shaped base is fixedly connected to a vertical hydraulic cylinder, the top of the vertical hydraulic cylinder is fixedly connected to a vertical telescopic rod, one side of the vertical telescopic rod is fixedly sleeved with two horizontal connecting shafts, and one side of the two horizontal connecting shafts is provided with the same arc-shaped abutment plate.

[0012] Preferably, two arc-shaped connecting columns are fixedly connected to the bottom of the arc-shaped support plate, and the positions of the two arc-shaped connecting columns correspond to the positions of the two horizontal connecting shafts. One end of the two arc-shaped connecting columns is provided with a through hole, and the two horizontal connecting shafts are respectively connected to the two corresponding through holes, and one side of the two fixed shafts is rotatably sleeved with two first connecting blocks.

[0013] Preferably, one side of the two first connecting blocks on the same side is fixedly connected with an outer supporting hydraulic cylinder and an inner supporting hydraulic cylinder respectively, the two outer supporting hydraulic cylinders and inner supporting hydraulic cylinders at the same position are cross-arranged, the top ends of the two outer supporting hydraulic cylinders are fixedly connected with an outer supporting telescopic rod, and the top ends of the two inner supporting hydraulic cylinders are fixedly connected with an inner supporting telescopic rod.

[0014] Preferably, the top ends of the two outer supporting telescopic rods and the inner supporting telescopic rod on the same side are fixedly connected to the same supporting column, one side of the two supporting columns are fitted with the arc-shaped abutment plate, one side of the two outer supporting hydraulic cylinders and the two inner supporting hydraulic cylinders are fixedly connected to an arc-shaped connecting block, and the top of the lifting base is fixedly connected to four first arc-shaped bottom blocks.

[0015] Preferably, the four first arc-shaped bottom blocks are rotatably sleeved with second connecting blocks, the tops of the four second connecting blocks are fixedly connected to diagonal support hydraulic cylinders, the tops of the four diagonal support hydraulic cylinders are fixedly connected to diagonal support telescopic rods, and the tops of the four diagonal support telescopic rods are connected to the arc-shaped connecting blocks.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present invention provides an arch bridge support device for a river channel, which has the following beneficial effects:

[0018] 1. The arch bridge support device for the river channel starts the lifting hydraulic cylinder, which drives the height telescopic rod, so that the height telescopic rod drives the arc-shaped support plate through the lifting base, and at the same time starts two outer support hydraulic cylinders and two inner support hydraulic cylinders, thereby making the two outer support telescopic rods and the two inner support telescopic rods fit the arc-shaped support plate with the bridge deck, so as to support the bridge.

[0019] 2. The arch bridge support device for the river channel starts four diagonal support hydraulic cylinders, which respectively drive the corresponding diagonal support telescopic rods. The diagonal support telescopic rods are telescopically moved, thereby adjusting the angle between the two outer support hydraulic cylinders and the two inner support hydraulic cylinders. The two outer support hydraulic cylinders and the two inner support hydraulic cylinders then move the support columns away from or closer to each other, thereby supporting arch bridges with different degrees of curvature.

[0020] 3. The arch bridge support device for the river channel rotates by starting the driving mechanism, and the four active shafts rotate, and the four active shafts then rotate the corresponding four active gears, and the four active gears then rotate the four meshing driven gears, and the four driven gears then rotate the corresponding driven shafts, and the four driven shafts then rotate the four storage arms, and the four storage arms respectively drive the four load-bearing hydraulic cylinders to rotate out of one side of the four arc-shaped storage grooves, and then start the four load-bearing hydraulic cylinders, and the four load-bearing hydraulic cylinders drive the four hydraulic telescopic rods, so as to support the entire device.

[0021] 4. The arch bridge support device for the river channel continuously extends and retracts downward through four hydraulic telescopic rods. When the resistance to downward extension and retraction is large, the signal is transmitted to the pressure wire through the pressure sensor, and then the signal is transmitted to the controller through the pressure wire, and the signal is transmitted to the control element through the control wire to close the load-bearing hydraulic cylinder, so that it can provide support according to the different softness of the soil, thereby improving the practicality of the entire device.

[0022] 5. The arch bridge support device for the river channel is extended and retracted downward by the telescopic rod, and the four sliding columns slide downward in the slide grooves in the four fixed cylinders respectively, thereby playing a certain buffering role against excessive pressure on the bridge deck and downward movement of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle;

[0025] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the vertical hydraulic cylinder of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the outer supporting hydraulic cylinder and the inner supporting hydraulic cylinder of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the arc-shaped abutment plate of the present invention.

[0031] In the figure: 1. operating table; 2. driving mechanism; 3. moving crawler; 4. driving shaft; 5. driving gear; 6. driven shaft; 7. driven gear; 8. storage arm; 9. load-bearing hydraulic cylinder; 10. hydraulic telescopic rod; 11. load-bearing chassis; 12. arc storage slot; 13. pressure sensor; 14. controller; 15. pressure wire; 16. control element; 17. control wire; 18. lifting hydraulic cylinder; 19. height lifting and retracting rod; 20. lifting base; 21. fixed cylinder; 22. sliding column; 23. Sealing rubber pad; 24. Ventilation hole; 25. T-type base; 26. Fixed axis; 27. Vertical hydraulic cylinder; 28. Vertical telescopic rod; 29. ​​Horizontal connecting axis; 30. Arc-shaped abutment plate; 31. Arc-shaped connecting column; 32. First connecting block; 33. External supporting hydraulic cylinder; 34. Internal supporting hydraulic cylinder; 35. External supporting telescopic rod; 36. Internal supporting telescopic rod; 37. Support column; 38. Arc-shaped connecting block; 39. First arc-shaped bottom block; 40. Second connecting block; 41. Diagonal supporting hydraulic cylinder; 42. Diagonal supporting telescopic rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] As described in the background technology, the shortcomings of the prior art exist. In order to solve the above technical problems, this application proposes an arch bridge support device for a river channel.

[0034] In a typical implementation of the present application, Figure 1-8As shown, an arch bridge support device for a river includes an operating platform 1, a driving mechanism 2 is fixedly connected to the bottom of the operating platform 1, a movable crawler 3 is arranged below the driving mechanism 2, four active rotating grooves and four driven rotating grooves are opened at the bottom of the driving mechanism 2, the positions of the four active rotating grooves and the four driven rotating grooves correspond to each other, a driving shaft 4 and a driven shaft 6 are rotatably connected in the four active rotating grooves and the four driven rotating grooves respectively, a driving gear 5 is rotatably sleeved on one side of the four active rotating shafts 4, and a driven gear 5 is fixedly sleeved on one side of the four driven rotating shafts 6. The driving gear 7 and the driven gear 7 at the same position are meshed with each other. A storage arm 8 is fixedly sleeved on one side of the four driven rotating shafts 6. A load-bearing hydraulic cylinder 9 is fixedly sleeved in the four storage arms 8. The bottom ends of the four storage arms 8 are fixedly connected with a hydraulic telescopic rod 10. The bottom ends of the four hydraulic telescopic rods 10 are fixedly connected with a load-bearing chassis 11. Two arc-shaped storage grooves 12 are provided on both sides of the operating table 1 away from each other. The positions of the four arc-shaped storage grooves 12 correspond to the positions of the four load-bearing hydraulic cylinders 9 and are adapted to each other.

[0035] Furthermore, in the above scheme, the bottoms of the four load-bearing chassis 11 are fixedly connected with pressure sensors 13, the tops of the four load-bearing chassis 11 are fixedly connected with controllers 14, one side of the four controllers 14 is fixedly connected with pressure wires 15, and the other ends of the four pressure wires 15 are respectively connected to the corresponding pressure sensors 13, the tops of the four load-bearing hydraulic cylinders 9 are fixedly connected with control elements 16, and the tops of the four controllers 14 are fixedly connected with control wires 17. By setting the control wires 17, the start-up of the load-bearing hydraulic cylinders 9 can be controlled.

[0036] Furthermore, in the above scheme, the other ends of the four control wires 17 are connected to the control element 16, the four controllers 14 are electrically connected to the corresponding four pressure wires 15 and the four control wires 17, the top of the operating platform 1 is fixedly connected to a lifting hydraulic cylinder 18, the top of the lifting hydraulic cylinder 18 is fixedly connected to a height lifting and retraction rod 19, the top of the height lifting and retraction rod 19 is fixedly connected to a lifting base 20, and the top of the operating platform 1 is fixedly connected to four fixed cylinders 21. The setting of the four fixed cylinders 21 facilitates the sliding of the sliding column 22.

[0037] Furthermore, in the above scheme, the top ends of the four fixed cylinders 21 are provided with sliding grooves, and the sliding columns 22 are slidably sleeved in the four sliding grooves. The bottom ends of the four sliding columns 22 are fixedly connected with sealing rubber pads 23, and the four sealing rubber pads 23 are respectively located in the corresponding sliding grooves. The top ends of the four sliding columns 22 are connected to the lifting base 20, and one side of the four fixed cylinders 21 is provided with a plurality of evenly distributed ventilation holes 24, and the plurality of evenly distributed ventilation holes 24 are respectively interconnected with the four sliding grooves. When in use, the air intake speed of the plurality of ventilation holes 24 is adapted to the rising speed of the sliding column 22. Through the setting of the ventilation holes 24, the sliding column 22 is squeezed and slid downward to facilitate the discharge of air in the fixed cylinder 21.

[0038] Furthermore, in the above scheme, the top of the lifting base 20 is fixedly connected to a T-shaped base 25, two fixed shafts 26 are fixedly connected inside the T-shaped base 25, the top of the T-shaped base 25 is fixedly connected to a vertical hydraulic cylinder 27, the top of the vertical hydraulic cylinder 27 is fixedly connected to a vertical telescopic rod 28, one side of the vertical telescopic rod 28 is fixedly sleeved with two horizontal connecting shafts 29, and one side of the two horizontal connecting shafts 29 is provided with the same arc-shaped abutment plate 30. Through the setting of the arc-shaped abutment plate 30, it can fit with the bridge deck, thereby facilitating the support of the arch bridge.

[0039] Furthermore, in the above scheme, two arc-shaped connecting columns 31 are fixedly connected to the bottom of the arc-shaped abutment plate 30, and the positions of the two arc-shaped connecting columns 31 correspond to the positions of the two horizontal connecting shafts 29. Through holes are provided at one end of the two arc-shaped connecting columns 31, and the two horizontal connecting shafts 29 are respectively connected to the two corresponding through holes. Two first connecting blocks 32 are rotatably sleeved on one side of the two fixed shafts 26. The setting of the first connecting blocks 32 facilitates the connection between the outer supporting hydraulic cylinder 33 and the inner supporting hydraulic cylinder 34.

[0040] Furthermore, in the above scheme, one side of the two first connecting blocks 32 on the same side is fixedly connected with an outer supporting hydraulic cylinder 33 and an inner supporting hydraulic cylinder 34 respectively, and the two outer supporting hydraulic cylinders 33 and the inner supporting hydraulic cylinders 34 at the same position are cross-arranged, and the top ends of the two outer supporting hydraulic cylinders 33 are fixedly connected with an outer supporting telescopic rod 35, and the top ends of the two inner supporting hydraulic cylinders 34 are fixedly connected with an inner supporting telescopic rod 36. Through the arrangement of the outer supporting telescopic rod 35 and the inner supporting telescopic rod 36, the arc-shaped support plate 30 can be supported according to the curvature of different arch bridges.

[0041] Furthermore, in the above scheme, the top ends of the two outer supporting telescopic rods 35 and the inner supporting telescopic rod 36 on the same side are fixedly connected to the same supporting column 37, one side of the two supporting columns 37 are both in contact with the arc-shaped abutment plate 30, one side of the two outer supporting hydraulic cylinders 33 and the two inner supporting hydraulic cylinders 34 are fixedly connected to an arc-shaped connecting block 38, and the top of the lifting base 20 is fixedly connected to four first arc-shaped bottom blocks 39. The arrangement of the arc-shaped connecting block 38 and the first arc-shaped bottom block 39 facilitates the connection of the diagonal supporting hydraulic cylinder 41.

[0042] Furthermore, in the above scheme, the second connecting blocks 40 are rotatably sleeved in the four first arc-shaped bottom blocks 39, the tops of the four second connecting blocks 40 are fixedly connected to the diagonal support hydraulic cylinders 41, the tops of the four diagonal support hydraulic cylinders 41 are fixedly connected to the diagonal support telescopic rods 42, and the tops of the four diagonal support telescopic rods 42 are connected to the arc-shaped connecting block 38. By setting the four diagonal support hydraulic cylinders 41 and the four diagonal support telescopic rods 42, the crossing angle of the outer support hydraulic cylinder 33 and the inner support hydraulic cylinder 34 can be adjusted.

[0043] When in use, the lifting hydraulic cylinder 18 is started, and the lifting hydraulic cylinder 18 drives the height telescopic rod 19, so that the height telescopic rod 19 drives the arc-shaped support plate 30 through the lifting base 20, and at the same time, the two outer support hydraulic cylinders 33 and the two inner support hydraulic cylinders 34 are started, thereby driving the two outer support telescopic rods 35 and the two inner support telescopic rods 36, so that the arc-shaped support plate 30 fits against the bridge deck, thereby supporting the bridge.

[0044] The four diagonal support hydraulic cylinders 41 are started, and the four diagonal support hydraulic cylinders 41 respectively drive the corresponding diagonal support telescopic rods 42, and the diagonal support telescopic rods 42 are telescopically moved, so that the angle between the two outer support hydraulic cylinders 33 and the two inner support hydraulic cylinders 34 can be adjusted. The two outer support hydraulic cylinders 33 and the two inner support hydraulic cylinders 34 then move the support columns 37 away from or closer to each other, so as to support arch bridges with different degrees of curvature.

[0045] Start the driving mechanism 2 to rotate the four active shafts 4, the four active shafts 4 rotate, the four active shafts 4 then rotate the corresponding four active gears 5, the four active gears 5 then rotate the four meshing driven gears 7, the four driven gears 7 then rotate the corresponding driven shafts 6, the four driven shafts 6 then rotate the four storage arms 8, the four storage arms 8 respectively drive the four load-bearing hydraulic cylinders 9 to rotate out of one side of the four arc-shaped storage grooves 12, and then start the four load-bearing hydraulic cylinders 9, the four load-bearing hydraulic cylinders 9 drive the four hydraulic telescopic rods 10, so that the entire device can be supported.

[0046] The four hydraulic telescopic rods 10 continuously extend and retract downward. When the resistance to downward extension and retraction is large, a signal is transmitted to the pressure wire 15 through the pressure sensor 13, and then the signal is transmitted to the controller 14 through the pressure wire 15, and then the signal is transmitted to the control element 16 through the control wire 17 to close the load-bearing hydraulic cylinder 9, so that support can be provided according to the soil with different softness, thereby improving the practicality of the entire device.

[0047] When the pressure on the bridge deck is too great, the telescopic rod 19 is extended downward, and the four sliding columns 22 slide downward in the slide grooves in the four fixed cylinders 26 respectively, thereby playing a certain buffering role against the excessive pressure on the bridge deck and the downward movement of the telescopic rod 19.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river arch bridge support device, comprising an operating platform (1), characterized in that: The bottom of the operating table (1) is fixedly connected to a driving mechanism (2), a movable crawler (3) is provided below the driving mechanism (2), four active rotating grooves and four driven rotating grooves are provided at the bottom of the driving mechanism (2), the positions of the four active rotating grooves and the four driven rotating grooves correspond to each other, a driving rotating shaft (4) and a driven rotating shaft (6) are rotatably connected in the four active rotating grooves and the four driven rotating grooves respectively, a driving gear (5) is rotatably sleeved on one side of the four active rotating shafts (4), a driven gear (7) is fixedly sleeved on one side of the four driven rotating shafts (6), and the driving gears (5) at the same position are rotatably sleeved on one side of the four driven rotating shafts (6). The wheel (5) is meshed with the driven gear (7), one side of the four driven rotating shafts (6) is fixedly sleeved with a storage arm (8), the four storage arms (8) are fixedly sleeved with a load-bearing hydraulic cylinder (9), the bottom ends of the four storage arms (8) are fixedly connected with a hydraulic telescopic rod (10), the bottom ends of the four hydraulic telescopic rods (10) are fixedly connected with a load-bearing chassis (11), and two arc-shaped storage grooves (12) are provided on two sides away from each other of the operating platform (1), and the positions of the four arc-shaped storage grooves (12) correspond to and match the positions of the four load-bearing hydraulic cylinders (9); The bottoms of the four load-bearing chassis (11) are fixedly connected to pressure sensors (13), the tops of the four load-bearing chassis (11) are fixedly connected to controllers (14), one side of the four controllers (14) is fixedly connected to pressure wires (15), and the other ends of the four pressure wires (15) are respectively connected to corresponding pressure sensors (13), the tops of the four load-bearing hydraulic cylinders (9) are fixedly connected to control elements (16), and the tops of the four controllers (14) are fixedly connected to control wires (17); The other ends of the four control wires (17) are all connected to the control element (16); the four controllers (14) are electrically connected to the corresponding four pressure wires (15) and the four control wires (17); the top of the operating platform (1) is fixedly connected to a lifting hydraulic cylinder (18); the top of the lifting hydraulic cylinder (18) is fixedly connected to a height lifting and retracting rod (19); the top of the height lifting and retracting rod (19) is fixedly connected to a lifting base (20); and the top of the operating platform (1) is fixedly connected to four fixing cylinders (21); The top of the lifting base (20) is fixedly connected to a T-shaped base (25), two fixed shafts (26) are fixedly connected inside the T-shaped base (25), the top of the T-shaped base (25) is fixedly connected to a vertical hydraulic cylinder (27), the top of the vertical hydraulic cylinder (27) is fixedly connected to a vertical telescopic rod (28), one side of the vertical telescopic rod (28) is fixedly sleeved with two horizontal connecting shafts (29), and one side of the two horizontal connecting shafts (29) is provided with a same arc-shaped abutment plate (30); Two arc-shaped connecting columns (31) are fixedly connected to the bottom of the arc-shaped abutment plate (30), the positions of the two arc-shaped connecting columns (31) correspond to the positions of the two horizontal connecting shafts (29), one end of the two arc-shaped connecting columns (31) is provided with a through hole, the two horizontal connecting shafts (29) are respectively connected to the two corresponding through holes, and one side of the two fixed shafts (26) is rotatably sleeved with two first connecting blocks (32); One side of the two first connection blocks (32) on the same side is respectively fixedly connected to an outer support hydraulic cylinder (33) and an inner support hydraulic cylinder (34); the two outer support hydraulic cylinders (33) and the inner support hydraulic cylinders (34) at the same position are cross-arranged; the top ends of the two outer support hydraulic cylinders (33) are fixedly connected to an outer support telescopic rod (35); and the top ends of the two inner support hydraulic cylinders (34) are fixedly connected to an inner support telescopic rod (36); The top ends of the two outer supporting telescopic rods (35) and the inner supporting telescopic rod (36) on the same side are fixedly connected to the same supporting column (37), one side of the two supporting columns (37) is in contact with the arc-shaped abutment plate (30), one side of the two outer supporting hydraulic cylinders (33) and the two inner supporting hydraulic cylinders (34) is fixedly connected to an arc-shaped connecting block (38), and the top of the lifting base (20) is fixedly connected to four first arc-shaped bottom blocks (39); The four first arc-shaped bottom blocks (39) are all rotatably sleeved with second connection blocks (40), the tops of the four second connection blocks (40) are all fixedly connected to diagonal support hydraulic cylinders (41), the tops of the four diagonal support hydraulic cylinders (41) are all fixedly connected to diagonal support telescopic rods (42), and the tops of the four diagonal support telescopic rods (42) are all connected to the arc-shaped connection blocks (38).

2. The arch bridge support device for a river according to claim 1, characterized in that: The top ends of the four fixed cylinders (21) are each provided with a slide groove, and a slide column (22) is slidably sleeved in the four slide grooves. The bottom ends of the four slide columns (22) are each fixedly connected with a sealing rubber pad (23), and the four sealing rubber pads (23) are respectively located in the corresponding slide grooves. The top ends of the four slide columns (22) are each connected to the lifting base (20). A plurality of evenly distributed ventilation holes (24) are each provided on one side of the four fixed cylinders (21), and the plurality of evenly distributed ventilation holes (24) are respectively interconnected with the four slide grooves. When in use, the air intake speed of the plurality of ventilation holes (24) is adapted to the rising speed of the sliding column (22).

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