A cast-in-place arch bridge arch structure dismantling device and dismantling method

Abstract

The present invention discloses a device and method for dismantling an arch frame structure of a cast-in-place arch bridge, and relates to the field of arch bridge construction. The dismantling device includes a frame, a protective plate is fixedly connected to one side of the upper side of the frame, a sliding rod is slidably connected to the top of the protective plate, and one end of the sliding rod is fixedly connected to a mounting plate; the present invention forms a knocking mechanism by providing a second motor, a reciprocating screw, a limit plate, a transmission block, a transmission rod, a knocking block, a first gear, a second gear, a sliding frame, a sliding block and a one-way threaded rod. Starting the second motor can drive the knocking block to reciprocate and knock one end of the pin shaft, so that the pin shaft gradually moves in the opposite direction of the arch frame structure, saving manpower and improving the dismantling efficiency. In addition, an adjustment structure is formed by providing an adjustment frame, an adjustment rod, a first bevel gear, a second bevel gear, an adjustment threaded rod and a knocking rod. The movement of the knocking block drives the knocking rod to knock the mounting plate, and the fixing mechanism applies a pulling force to one end of the pin shaft, thereby improving the dismantling efficiency of the pin shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of arch bridge construction, and in particular to a device and method for dismantling an arch frame structure of a cast-in-place arch bridge. Background Art

[0002] An arch bridge is a bridge whose main load-bearing structural element is an arch. Vertical loads are transferred to the abutments through the curved arches. In engineering, this bridge serves the purpose of flood discharge and navigation under the bridge. Throughout its formation and development, arch bridges have always been curved, and for this reason, they are often referred to as curved bridges. An arch bridge is a bridge whose main load-bearing element is an arch ring or arch rib, primarily designed to withstand axial pressure. The arch structure consists of the arch ring and its supports. Arch bridges can be constructed of materials with good compressive properties, such as brick, stone, and concrete. Long-span arch bridges are constructed of reinforced concrete or steel to withstand the torque that occurs.

[0003] An arch frame structure is required during the pouring and construction of an arch bridge. After the arch frame structure is built, stones are placed on top of the arch frame, and then concrete is poured to construct the bridge body. After the pouring is completed, the arch frame structure needs to be dismantled. The arch frame structure is usually composed of multiple steel frames, and usually requires manpower or the use of hydraulic cylinders to remove the pins at the connection of the steel frames. However, since the arch frame pins will be deformed to a certain extent due to the pressure of the concrete above during use, when the hydraulic cylinder is used to remove the stamping pins, it may cause damage to the connection between the steel frame and the pins, resulting in a waste of resources; if manpower is directly used to knock the pins multiple times for disassembly, the number of knocks required is large, and the disassembly process is time-consuming and labor-intensive. Summary of the Invention

[0004] In response to the problems existing in the above-mentioned background technology, the present invention provides a cast-in-place arch bridge arch frame structure dismantling device and dismantling method, which effectively solves the problem of dismantling the pin shaft on the arch frame, saves time and labor, is highly efficient and has good results.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] The present invention discloses a device for dismantling an arch frame structure of a cast-in-situ arch bridge, comprising a frame, wherein a rectangular hole and a strip-shaped hole are sequentially opened on the top of the frame, a protective plate is fixedly connected to one side of the rectangular hole, a plurality of sliding rods are slidably connected to the top of the protective plate, one end of the sliding rod is fixedly connected to a mounting plate, the mounting plate is movably arranged in the rectangular hole, and a fixing mechanism is provided on the mounting plate;

[0007] The driving mechanism is mounted on a link cam of the second cam and is located adjacent to the drive means, wherein the driving mechanism comprises a first motor, a second motor, a second gear, a limit plate, a transmission block, a transmission rod, a knocking block, a first gear, a second gear, a sliding frame, a sliding block, a one-way threaded rod and a reciprocating block, an output end of the second motor is fixedly connected to the first gear, one side of the first gear is fixedly connected to the reciprocating screw rod, the limiting plate has two pieces, which are fixedly connected to the bottom inner side of the frame in parallel and spaced apart. The reciprocating block is slidably arranged between the two limiting plates, the reciprocating block is threadedly connected to the reciprocating screw rod, the transmission block is slidably connected to the upper end of the reciprocating block, the transmission rod is fixedly connected to the top of the transmission rod and extends out from the strip hole, the knocking block is fixedly connected to the top end of the transmission rod, the second gear is meshed with the first gear, one side of the second gear is fixedly connected to one end of the sliding frame, the sliding block is slidably connected to the inside of the sliding frame,

[0008] Furthermore, an adjustment mechanism is provided on one side of the transmission rod, and the adjustment mechanism includes an adjustment frame, an adjustment rod, a first bevel gear, a second bevel gear, an adjustment threaded rod and a knocking rod. One side of the adjustment frame is fixedly connected to the transmission rod, and the adjustment rod rotates and passes through the upper side of the adjustment frame, the bottom end of the adjustment rod is fixedly connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, one side of the second bevel gear is fixedly connected to one end of the adjustment threaded rod, the other end of the adjustment threaded rod is threadedly connected to the knocking rod, and the knocking rod is slidingly connected to the adjustment frame.

[0009] Furthermore, a fixing mechanism is provided on one side of the mounting plate, and the fixing mechanism includes a first motor, a threaded block, a bidirectional threaded rod and a fixing block. The first motor is fixedly mounted on one side of the mounting plate by bolts, and the output end of the first motor is fixedly connected to the bidirectional threaded rod. The bidirectional threaded rod is provided on the inner side of the mounting plate, and threaded blocks are respectively threadedly connected on the left and right sides thereof. The threaded block is slidably connected to the mounting plate, and one side of the threaded block is fixedly connected to the fixing block.

[0010] Furthermore, a rubber pad is provided on the inner side of the fixing block, and both the fixing block and the rubber pad are semicircular in shape.

[0011] Furthermore, the knocking mechanism also includes a plurality of first bearing seats and second bearing seats, each of the second bearing seats is fixedly connected to the upper inner wall of the frame, and the second bearing seats are respectively rotatably connected to the sliding frame, and each of the first bearing seats is fixedly connected to the lower inner wall of the frame, and the first bearing seats are respectively rotatably connected to the reciprocating screw.

[0012] Furthermore, a sliding seat is fixedly connected to the inner side wall of the frame, and the sliding seat is slidably connected to the one-way threaded rod.

[0013] Furthermore, a limiting protrusion is provided inside the sliding frame, and the limiting protrusion is slidably connected to the sliding block.

[0014] Furthermore, a shielding plate is fixedly connected to one side of the mounting plate, and the shielding plate passes through the protective plate and is slidably connected to the protective plate.

[0015] Furthermore, glass windows are provided on both the front and rear sides of the frame, and the height of the bottom of the glass windows is the same as the height above the transmission block.

[0016] The present invention provides a method for dismantling an arch frame structure of a cast-in-situ arch bridge, which uses the device for dismantling an arch frame structure of a cast-in-situ arch bridge described in the above technical solution, and comprises the following steps:

[0017] Step 1: Start the first motor of the fixing mechanism to drive the fixing block to move and fix the pin cap of the pin shaft;

[0018] Step 2: Start the second motor of the knocking mechanism to drive the knocking block to move and knock the pin. The movement of the knocking block will drive the knocking rod to move and knock the mounting plate. The movement of the mounting plate applies a pulling force to the pin through the fixing mechanism, so that the pin is gradually separated from the arch frame.

[0019] Step 3: After the pin shaft is separated from the arch frame, start the first motor of the fixing mechanism to drive the fixing block to separate from the pin shaft, and then take the pin shaft to complete the disassembly.

[0020] Compared with the prior art, the present invention provides a device and method for dismantling the arch frame structure of a cast-in-place arch bridge. A knocking mechanism is formed by providing a second motor, a reciprocating screw, a limit plate, a transmission block, a transmission rod, a knocking block, a first gear, a second gear, a sliding frame, a sliding block and a one-way threaded rod. By starting the second motor, the knocking block can be driven to knock reciprocally on one end of the pin shaft, so that the pin shaft gradually moves opposite to the arch frame structure, saving manpower and improving the dismantling efficiency. An adjustment structure is formed by providing an adjustment frame, an adjustment rod, a first bevel gear, a second bevel gear, an adjusting threaded rod and a knocking rod. The movement of the knocking block will drive the knocking rod to knock on the mounting plate, and the fixing mechanism will apply a pulling force to one end of the pin shaft, thereby improving the dismantling efficiency of the pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a front structural schematic diagram of the present invention;

[0023] Figure 3 For the present invention Figure 2 A magnified schematic diagram of part A;

[0024] Figure 4 For the present invention Figure 2An enlarged schematic diagram of part B;

[0025] Figure 5 This is a front view of the present invention;

[0026] Figure 6 It is a side structural schematic diagram of the present invention;

[0027] Figure 7 For the present invention Figure 6 An enlarged schematic diagram of part C;

[0028] Figure 8 It is a schematic diagram of the top surface structure of the present invention.

[0029] In the figure: 1, frame; 2, protective plate; 3, sliding rod; 4, mounting plate; 5, fixing mechanism; 501, first motor; 502, threaded block; 503, bidirectional threaded rod; 504, fixing block; 505, rubber pad; 6, knocking mechanism; 601, second motor; 602, reciprocating screw rod; 603, limit plate; 604, transmission block; 605, transmission rod; 606, knocking block; 607, first gear; 608, first gear Second gear; 609, sliding frame; 610, sliding block; 611, one-way threaded rod; 612, limiting protrusion; 613, sliding seat; 614, first bearing seat; 615, second bearing seat; 616, reciprocating block; 7, adjusting mechanism; 701, adjusting frame; 702, adjusting rod; 703, first bevel gear; 704, second bevel gear; 705, adjusting threaded rod; 706, knocking rod; 8, glass window; 9, baffle. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The terms "upper", "lower", "left", "right", "front", "back", etc. used in the patent application specification and claims of this disclosure are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly; "connected" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The parts not described in detail in the present invention are all common knowledge to those skilled in the art.

[0031] Example 1:

[0032] like Figure 1-8 The top of the protective plate 2 is slidably connected to a plurality of sliding rods 3, which are generally two and symmetrically arranged. The sliding rods 3 are fixedly provided with a limit plate at the end of the protective plate 2 to prevent the sliding rods 3 from detaching from the protective plate 2. The other end of the sliding rods 3 is welded to a mounting plate 4, which is limited by the sliding rods 3 to ensure the stability of the mounting plate 4 during movement. The mounting plate 4 is movably arranged in the rectangular hole, and a fixing mechanism 5 for fixing the pin cap on the arch frame to be disassembled is provided on it. A step or platform for the mounting plate 4 to slide can also be provided in the frame 1 at the bottom, and can support the mounting plate 4 at the same time.

[0033] The frame 1 is internally provided with a knocking mechanism 6, which includes a second motor 601, a reciprocating screw 602, a limit plate 603, a transmission block 604, a transmission rod 605, a knocking block 606, a first gear 607, a second gear 608, a sliding frame 609, a sliding block 610, a one-way threaded rod 611 and a reciprocating block 616. The output end of the second motor 601 is fixedly connected to the first gear 607, and one side of the first gear 607 is fixedly connected to the reciprocating screw 602. There are two limit plates 603, which are fixedly connected to the bottom of the inner side of the frame 1 in parallel and at intervals. The reciprocating block 616 is slidably arranged between the two limit plates 603. The reciprocating block 616 is fixedly connected to the reciprocating screw 602. The multifilament rod 602 is threadedly connected, the transmission block 604 is slidingly connected to the upper part of the reciprocating block 616, the transmission rod 605 is fixedly connected to the top of the transmission block 604 and extends from the strip hole, the knocking block 606 is fixedly connected to the top of the transmission rod 605, the second gear 608 is meshed with the first gear 607, one side of the second gear 608 is fixedly connected to one end of the sliding frame 609, and the sliding block 610 is slidingly connected to the inside of the sliding frame 609, one side of the sliding block 610 is fixedly connected to one end of the one-way threaded rod 611, the one-way threaded rod 611 is threadedly connected to the transmission block 604, and the top of the reciprocating block 616 is slidingly connected to the one-way threaded rod 611.

[0034] In this embodiment, the knocking block 606 can be driven to perform reciprocating motion by starting the second motor 601. The knocking block 606 knocks the pin shaft multiple times, and the knocking block 606 gradually moves toward the pin shaft during the reciprocating motion. The knocking block 606 can always knock the pin shaft, thereby separating the pin shaft from the arch frame structure, saving manpower, and improving the efficiency of pin shaft disassembly.

[0035] In this embodiment, an adjustment mechanism 7 is provided on one side of the transmission rod 605, and the adjustment mechanism 7 includes an adjustment frame 701, an adjustment rod 702, a first bevel gear 703, a second bevel gear 704, an adjustment threaded rod 705 and a knocking rod 706. One side of the adjustment frame 701 is fixedly connected to the transmission rod 605, and the adjustment rod 702 rotates and passes through the upper side of the adjustment frame 701. The bottom end of the adjustment rod 702 is fixedly connected to the first bevel gear 703, and the first bevel gear 703 is meshed with the second bevel gear 704. One side of the second bevel gear 704 is fixedly connected to one end of the adjustment threaded rod 705, and the other end of the adjustment threaded rod 705 is threadedly connected to the knocking rod 706, and the knocking rod 706 is slidingly connected to the adjustment frame 701. When the knocking block 606 moves, it will drive the knocking rod 706 to move. The movement of the knocking rod 706 will knock on the mounting plate 4. The mounting plate 4 will apply a pulling force to the pin shaft, so that the pin shaft can be separated from the arch frame more quickly, thereby improving the disassembly efficiency of the pin shaft.

[0036] In this embodiment, a fixing mechanism 5 is provided on one side of the mounting plate 4. The fixing mechanism 5 includes a first motor 501, a threaded block 502, a bidirectional threaded rod 503, and a fixing block 504. The first motor 501 is fixedly mounted on one side of the mounting plate 4 by bolts. The output end of the first motor 501 is fixedly connected to the bidirectional threaded rod 503. The bidirectional threaded rod 503 is provided on the inner side of the mounting plate 4. The left and right sides of the bidirectional threaded rod 503 are respectively threadedly connected. The threaded block 502 is slidably connected to the mounting plate 4. One side of the threaded block 502 is fixedly connected to the fixing block 504. Starting the first motor 501 can drive the fixing block 504 to move. The pin cap of the pin shaft can be quickly fixed by the two sets of fixing blocks 504, which is simple to operate and convenient and quick.

[0037] Furthermore, a rubber pad 505 is provided inside the fixing block 504, and both the fixing block 504 and the rubber pad 505 are semicircular in shape. The rubber pad 505 is provided to ensure friction with the pin cap of the pin shaft, thereby ensuring stability after the pin shaft is fixed.

[0038] In this embodiment, the knocking mechanism 6 further includes a plurality of first bearing seats 614 and second bearing seats 615. Each of the second bearing seats 615 is fixedly connected to the upper inner wall of the frame 1, and the second bearing seats 615 are respectively rotatably connected to the sliding frame 609. Each of the first bearing seats 614 is fixedly connected to the lower inner wall of the frame 1, and the first bearing seats 614 are respectively rotatably connected to the reciprocating screw 602. The second bearing seats 615 are used to limit and fix the sliding frame 609 to ensure stability during the rotation of the sliding frame 609. The first bearing seats 614 are used to limit and fix the reciprocating screw 602 to ensure stability during the rotation of the reciprocating screw 602.

[0039] In this embodiment, a sliding seat 613 is fixedly connected to the inner wall of the frame 1, and the sliding seat 613 is slidably connected to the one-way threaded rod 611. The sliding seat 613 limits and fixes one end of the one-way threaded rod 611 to ensure the stability of the one-way threaded rod 611 during sliding.

[0040] In this embodiment, a limiting protrusion 612 is provided inside the sliding frame 609, and the limiting protrusion 612 is slidably connected to the sliding block 610. The limiting protrusion 612 limits the sliding block 610 to prevent the sliding block 610 from rotating inside the sliding frame 609.

[0041] In this embodiment, a shielding plate 9 is fixedly connected to one side of the mounting plate 4, and the shielding plate 9 passes through the protective plate 2 and is slidably connected to the protective plate 2. The shielding plate 9 is provided to block external dust to a certain extent, thereby preventing external dust and impurities from entering the interior of the frame 1.

[0042] In this embodiment, glass windows 8 are provided on both the front and rear sides of the frame 1, and the bottom height of the glass windows 8 is the same as the height above the transmission block 604. Through the glass windows 8, the fit between the knocking rod 706 and the mounting plate 4 can be checked, thereby facilitating the staff to rotate the adjustment rod 702 for adjustment.

[0043] Example 2:

[0044] The present invention provides a method for dismantling an arch frame structure of a cast-in-situ arch bridge, using the device for dismantling an arch frame structure of a cast-in-situ arch bridge described in Example 1, comprising the following steps:

[0045] Step 1: Start the first motor 501 of the fixing mechanism 5 to drive the fixing block 504 to move and fix the pin cap of the pin shaft;

[0046] Step 2: Start the second motor 601 of the knocking mechanism 6 to drive the knocking block 606 to move and knock the pin. The movement of the knocking block 606 will drive the knocking rod 706 to move and knock the mounting plate 4. The movement of the mounting plate 4 applies a pulling force to the pin through the fixing mechanism 5, so that the pin is gradually separated from the arch frame.

[0047] Step 3: After the pin shaft is separated from the arch frame, the first motor 501 of the fixing mechanism 5 is started to drive the fixing block 504 to separate from the pin shaft, and then the pin shaft is taken out to complete the disassembly.

[0048] The working principle of the dismantling device for the arch frame structure of a cast-in-situ arch bridge described in the present invention is as follows: first, when the pin shaft of the arch frame structure needs to be dismantled, the mounting plate 4 is pushed so that the pin cap of the pin shaft is located between the two sets of fixing blocks 504, and then the first motor 501 is started. The operation of the first motor 501 will drive the bidirectional threaded rod 503, and the threaded block 502 is slidably connected with the mounting plate 4, so that the mounting plate 4 will limit the threaded block 502 to a certain extent, and the rotation of the bidirectional threaded rod 503 will drive the threaded block 502 in the slide groove on one side of the mounting plate 4 under the influence of the thread. The movement of the threaded block 502 drives the fixed block 504 to move, and the movement of the fixed block 504 fits the pin cap of the pin shaft to fix the pin cap, and then the adjusting rod 702 is rotated. The rotation of the adjusting rod 702 drives the first bevel gear 703 to rotate, and the rotation of the first bevel gear 703 drives the second bevel gear 704 to rotate. The rotation of the second bevel gear 704 drives the adjusting threaded rod 705 to rotate. The rotation of the adjusting threaded rod 705 drives the knocking rod 706 to move under the influence of the thread, and one end of the knocking rod 706 fits to one side of the mounting plate 4;

[0049] Secondly, start the second motor 601. The operation of the second motor 601 will drive the first gear 607 to rotate. The rotation of the first gear 607 will drive the reciprocating screw rod 602 to rotate. Since the reciprocating screw rod 602 is threadedly connected to the reciprocating block 616, and the reciprocating block 616 is slidably connected to the limit plate 603, the rotation of the reciprocating screw rod 602 will drive the reciprocating block 616 to reciprocate under the influence of the thread. The movement of the reciprocating block 616 will drive the one-way threaded rod 611 to move. The movement of the one-way threaded rod 611 will drive the transmission block 604 to move. The movement of the transmission block 604 will drive the transmission rod 605 to move. The movement of the transmission rod 605 will drive the knocking block 606 to move. The knocking block 606 moves to knock on the pin shaft. The reciprocating knocking of the knocking block 606 causes the pin shaft to loosen.

[0050] Then, when the first gear 607 moves, it will drive the second gear 608 to rotate. The rotation of the second gear 608 will drive the sliding frame 609 to rotate. The rotation of the sliding frame 609 will drive the sliding block 610 to move. The movement of the sliding block 610 will drive the one-way threaded rod 611 to rotate. Since the one-way threaded rod 611 is threadedly connected to the transmission block 604, and the transmission block 604 is slidably connected to the reciprocating block 616, the rotation of the one-way threaded rod 611 will drive the transmission block 604 to move under the influence of the thread. Therefore, during the reciprocating motion of the reciprocating block 616, the transmission block 604 will gradually move to one side of the mounting plate 4, thereby adjusting the reciprocating position of the knocking block 606, avoiding the situation where the pin shaft cannot contact the knocking block 606 during the knocking process, and ensuring the knocking effect of the knocking block 606;

[0051] Finally, when the transmission rod 605 moves, it will drive the adjustment frame 701 to move, and the movement of the adjustment frame 701 will drive the knocking rod 706 to move. The movement of the knocking rod 706 will knock on the bottom of the mounting plate 4. After the mounting plate 4 is knocked, it will drive the fixed block 504 to move. The movement of the fixed block 504 will apply a pulling force to the pin shaft, so that the pin shaft can be separated from the arch frame faster, ensuring the disassembly efficiency of the arch frame pin shaft. After the pin shaft is separated from the arch frame, the first motor 501 is started to drive the bidirectional threaded rod 503 to rotate in the opposite direction. The rotation of the bidirectional threaded rod 503 drives the fixed block 504 to move and separate from the pin shaft, thereby completing the disassembly of the pin shaft. The overall operation is simple, manpower is saved, and the disassembly efficiency of the pin shaft is high.

Claims

1. A device for dismantling the arch structure of a cast-in-situ arch bridge, characterized by: The invention comprises a frame (1), wherein a rectangular hole and a strip hole are sequentially opened on the top of the frame (1), a protective plate (2) is fixedly connected to one side of the rectangular hole, a plurality of sliding rods (3) are slidably connected to the top of the protective plate (2), one end of the sliding rod (3) is fixedly connected to a mounting plate (4), the mounting plate (4) is movably arranged in the rectangular hole, and a fixing mechanism (5) for fixing a pin cap on a pin shaft of an arch frame to be disassembled is provided on the mounting plate; A knocking mechanism (6) is provided inside the frame (1), and the knocking mechanism (6) includes a second motor (601), a reciprocating screw (602), a limiting plate (603), a transmission block (604), a transmission rod (605), a knocking block (606), a first gear (607), a second gear (608), a sliding frame (609), a sliding block (610), a one-way threaded rod (611) and a reciprocating block (616). The output end of the second motor (601) is fixedly connected to the first gear (607), and one side of the first gear (607) is fixedly connected to the reciprocating screw (602). The limiting plates (603) have two pieces, which are fixedly connected to the bottom of the inner side of the frame (1) at intervals in parallel. The reciprocating block (616) is slidably provided between the two limiting plates (603). The reciprocating block (616) 16) is threadedly connected to the reciprocating screw rod (602), the transmission block (604) is slidably connected to the upper part of the reciprocating block (616), the transmission rod (605) is fixedly connected to the top of the transmission block (604) and extends from the strip hole, the knocking block (606) is fixedly connected to the top of the transmission rod (605), the second gear (608) is meshedly connected to the first gear (607), one side of the second gear (608) is fixedly connected to one end of the sliding frame (609), the sliding block (610) is slidably connected to the inner side of the sliding frame (609), the rotation of the sliding frame (609) will drive the sliding block (610) to move, one side of the sliding block (610) is fixedly connected to one end of the one-way threaded rod (611), and the one-way threaded rod (611) is threadedly connected to the transmission block (604); An adjusting mechanism (7) is provided on one side of the transmission rod (605), and the adjusting mechanism (7) comprises an adjusting frame (701), an adjusting rod (702), a first bevel gear (703), a second bevel gear (704), an adjusting threaded rod (705) and a knocking rod (706). One side of the adjusting frame (701) is fixedly connected to the transmission rod (605), the adjusting rod (702) is rotatably connected to the upper side of the adjusting frame (701), the bottom end of the adjusting rod (702) is fixedly connected to the first bevel gear (703), the first bevel gear (703) is meshedly connected to the second bevel gear (704), one side of the second bevel gear (704) is fixedly connected to one end of the adjusting threaded rod (705), the other end of the adjusting threaded rod (705) is threadedly connected to the knocking rod (706), and the knocking rod (706) is slidably connected to the adjusting frame (701).

2. The cast-in-situ arch bridge arch structure dismantling device according to claim 1, characterized in that: A fixing mechanism (5) is provided on one side of the mounting plate (4), and the fixing mechanism (5) includes a first motor (501), a threaded block (502), a bidirectional threaded rod (503) and a fixing block (504). The first motor (501) is fixedly mounted on one side of the mounting plate (4) by means of bolts. The output end of the first motor (501) is fixedly connected to the bidirectional threaded rod (503). The bidirectional threaded rod (503) is provided on the inner side of the mounting plate (4), and is threadedly connected to the threaded blocks (502) on the left and right sides thereof. The threaded block (502) is slidably connected to the mounting plate (4), and one side of the threaded block (502) is fixedly connected to the fixing block (504).

3. The cast-in-situ arch bridge arch structure dismantling device according to claim 2, characterized in that: A rubber pad (505) is provided inside the fixing block (504), and both the fixing block (504) and the rubber pad (505) are semicircular in shape.

4. The cast-in-situ arch bridge arch structure dismantling device according to claim 1, characterized in that: The knocking mechanism (6) also includes a plurality of first bearing seats (614) and second bearing seats (615), each of the second bearing seats (615) is fixedly connected to the upper inner wall of the frame (1), and the second bearing seats (615) are respectively rotatably connected to the sliding frame (609), and each of the first bearing seats (614) is fixedly connected to the lower inner wall of the frame (1), and the first bearing seats (614) are respectively rotatably connected to the reciprocating screw (602).

5. The cast-in-situ arch bridge arch structure dismantling device according to claim 1, characterized in that: The inner side wall of the frame (1) is fixedly connected to a sliding seat (613), and the sliding seat (613) is slidably connected to the one-way threaded rod (611).

6. The device for dismantling the arch frame structure of a cast-in-situ arch bridge according to claim 1, characterized in that: A limiting protrusion (612) is provided inside the sliding frame (609), and the limiting protrusion (612) is slidably connected to the sliding block (610).

7. The device for dismantling the arch frame structure of a cast-in-situ arch bridge according to claim 1, characterized in that: A shielding plate (9) is fixedly connected to one side of the mounting plate (4), and the shielding plate (9) passes through the protective plate (2) and is slidably connected to the protective plate (2).

8. The device for dismantling the arch frame structure of a cast-in-situ arch bridge according to claim 1, characterized in that: Glass windows (8) are provided on both the front and rear sides of the frame (1), and the bottom height of the glass windows (8) is the same as the height above the transmission block (604).

9. A method for dismantling an arch frame structure of a cast-in-situ arch bridge, characterized by: The cast-in-situ arch bridge arch structure dismantling device according to claim 2 or 3 comprises the following steps: Step 1: Start the first motor (501) of the fixing mechanism (5) to drive the fixing block (504) to move and fix the pin cap of the pin shaft; Step 2: Start the second motor (601) of the knocking mechanism (6) to drive the knocking block (606) to move and knock the pin. The movement of the knocking block (606) drives the knocking rod (706) to move and knock the mounting plate (4). The movement of the mounting plate (4) applies a pulling force to the pin through the fixing mechanism (5), thereby gradually separating the pin from the arch frame. Step 3: After the pin shaft is separated from the arch frame, the first motor (501) of the fixing mechanism (5) is started to drive the fixing block (504) to separate from the pin shaft, and then the pin shaft is taken out to complete the disassembly.

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