Arc-shaped floor trolley for flood discharge tunnel and construction method of arc-shaped floor trolley

Abstract

The arc-shaped floor trolley comprises a needle beam frame, a movable frame is arranged on the outer side of the needle beam frame, a bottom connecting frame is fixedly connected to the lower end of the movable frame, and an arc-shaped bottom plate is arranged below the bottom connecting frame. Through the arrangement of the traction rope and the limiting block, the limiting block can be rotated, the traction rope is wound together, the traction strength can be improved, meanwhile, force can be applied to the limiting block through the design, when the arc-shaped bottom plate is replaced, a second hydraulic cylinder stretches out, a first hydraulic cylinder contracts, and after the arc-shaped bottom plate makes contact with the ground, the traction strength is improved. When the limiting block and the extension frame are disconnected, the limiting block can be driven to rotate through the pulling rope, the position of the limiting block is limited through a second limiting plate, it is guaranteed that the limiting block can be taken out of a first connecting groove, and then a second hydraulic cylinder contracts or the first hydraulic cylinder stretches out; therefore, the limiting block is disconnected from the first connecting groove, and the arc-shaped bottom plate is taken out.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydropower engineering construction, and in particular to an arc-shaped floor trolley for a flood discharge tunnel and a construction method thereof. Background Art

[0002] The trolley, full name lining trolley, is mainly used for pouring concrete in tunnels, diversion tunnels, and secondary linings. As an important part of water conservancy and hydropower projects, the construction quality of the spillway is directly related to the safety and stability of the project.

[0003] In the prior art, when a trolley is used to construct the curved bottom plate at the bottom of the spillway tunnel, a release agent needs to be applied to the lower surface of the curved plate at the bottom of the trolley for use. Even if the release agent is used as an auxiliary, the traction force between the curved plate and the trolley is large during demoulding, which can easily cause the curved plate to gradually bend under force and change from its initial shape, thus easily affecting the subsequent construction of other parts of the spillway tunnel. Since the curved plate is fixed to the trolley by welding or bolts, it takes a long time to replace it, which is inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide a curved floor trolley for a flood discharge tunnel and a construction method thereof, so as to solve the problem proposed in the above-mentioned background technology that when using a trolley to construct the curved bottom plate at the bottom of the flood discharge tunnel, it is necessary to apply a release agent to the lower surface of the curved plate at the bottom of the trolley for use. Even if the release agent is used for auxiliary use, the traction force between the trolley and the curved plate is large during demoulding, which can easily cause the curved plate to gradually bend under force and change from its initial shape, which can easily affect the subsequent construction of other parts of the flood discharge tunnel. Because the curved plate and the trolley are fixed by welding or bolts, when replacing it, the replacement time is long, which is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a method for a curved floor trolley for a flood discharge tunnel, comprising a needle beam frame, a movable frame is arranged on the outer side of the needle beam frame, the lower end of the movable frame is fixedly connected with a bottom connecting frame, an curved bottom plate is arranged below the bottom connecting frame, the upper end of the curved bottom plate is fixedly connected with a No. 2 reinforcing rib, a connecting plate is arranged above the curved bottom plate, a No. 3 reinforcing rib is fixedly connected between the lower end of the connecting plate and the curved bottom plate, a No. 1 connecting groove is provided at the upper end of the connecting plate and the upper ends of the No. 3 and No. 2 reinforcing ribs, an extension frame is fixedly connected to the lower end of the extension frame, a No. 2 limiting plate is fixedly connected to the lower end of the extension frame, a limiting block is clamped inside the extension frame, the upper end of the limiting block is fixedly connected with a traction rope, the upper end of the traction rope is fixedly connected with the bottom plate, and a No. 2 hydraulic cylinder is installed at the upper end of the bottom plate.

[0006] Preferably, a hexagonal nut is fixedly connected to the upper end of the base plate, and the hexagonal nut is threadedly connected to the output end of the No. 2 hydraulic cylinder.

[0007] Preferably, a limiting clamping platform is fixedly connected to the middle of the upper end of the limiting block, and No. 2 connecting grooves are opened on both sides of the upper end of the limiting block, and a magnet is fixedly connected inside the No. 2 connecting groove.

[0008] Preferably, the upper end of the needle beam frame is fixedly connected to a slide rail, the upper end of the slide rail is fixedly connected to a support plate, and the interior of the support plate is slidably connected to a guide rail.

[0009] Preferably, the guide rail is fixedly connected to the movable frame, rollers are rotatably connected to both sides of the movable frame, the rollers overlap the needle beam frame, and both sides of the upper end of the needle beam frame are used to install winches to drive the movable frame to move.

[0010] Preferably, a side connecting frame is fixedly connected between the outer side of the movable frame and the upper end of the bottom connecting frame, and a No. 2 side connecting frame is fixedly connected to both ends of the bottom connecting frame.

[0011] Preferably, the lower end of the bottom connecting frame is fixedly connected to a No. 2 connecting frame, the lower end of the No. 2 connecting frame is fixedly connected to a No. 1 limiting plate, the upper end of the No. 1 limiting plate is fixedly connected to a supporting frame, the No. 2 hydraulic cylinder is fixedly connected to the supporting frame, and side fixing frames are fixedly connected between the two sides of the upper end of the No. 1 limiting plate and the side connecting frames.

[0012] Preferably, the upper end of the No. 1 limiting plate is located on the inner side of the support frame and is provided with a through groove, a limiting arc groove is provided inside the support frame, the bottom plate is slidably connected to the limiting arc groove, a No. 1 reinforcing rib is fixedly connected to one side of the support frame, side plates are fixedly connected on both sides of the upper end of the arc-shaped bottom plate, a supporting mesh plate is installed at the lower end of the needle beam frame, both ends of both sides of the needle beam frame are fixedly connected to a No. 1 side connecting frame, and a side sliding groove is provided on the inner side of the No. 1 side connecting frame.

[0013] Preferably, the side slide groove is internally slidably connected to a connecting frame No. 1, the interior of the No. 1 side connecting frame is internally fixedly connected to a hydraulic cylinder, the output end of the No. 1 hydraulic cylinder is fixedly connected to the connecting frame No. 1, the lower end of the No. 1 connecting frame is fixedly connected to a connecting claw, the lower end of the connecting claw is installed with a limiting frame, and a bottom support frame is installed between the connecting claw and the limiting frame.

[0014] A construction method for a curved floor trolley for a flood discharge tunnel comprises the following steps:

[0015] S1. Determine the construction location and size of the curved floor according to the construction drawings and actual site conditions;

[0016] S2. According to the construction requirements, select a suitable curved bottom plate and transport the curved bottom plate and the components of the device to the construction site;

[0017] S3, connecting the movable frame with the needle beam frame, and placing the selected arc bottom plate under the bottom connection frame;

[0018] S4, the No. 1 hydraulic cylinder contracts until the limiting block is at a height capable of connecting with the No. 1 connecting groove;

[0019] S5. According to the position of the second limiting plate, rotate the limiting block 180° and insert the limiting block into the extension frame;

[0020] S6, rotate the limit block by another 90°, lift the traction rope upward, and make the limit block engage with the extension frame;

[0021] S7, control the No. 2 hydraulic cylinder to contract and lift the limiting block, thereby moving the arc bottom plate until the upper end of the connecting plate contacts the lower end of the No. 1 limiting plate, and the limiting clamping table is clamped with the through groove;

[0022] S8. Tie the steel bars in the construction area, apply a release agent to the lower end of the curved bottom plate, move the curved bottom plate above the steel bars, and control the No. 1 hydraulic cylinder to retract so that the curved bottom plate is aligned with the area where the floor needs to be poured;

[0023] S9, pouring concrete into the steel bar area, after the concrete solidifies, the No. 1 hydraulic cylinder contracts to suspend the bottom support frame, and the winch is controlled to start to move the needle beam frame, and a sleeper is placed under one of the bottom support frames;

[0024] S10, the No. 1 hydraulic cylinder extends to release the arc bottom plate from the floor, and then washes the concrete at the lower end of the arc bottom plate and applies a release agent;

[0025] S11. Continue to tie the steel bars on one side of the formed arc floor. After the tying is completed, retract the No. 1 hydraulic cylinder to make the arc floor in the required position, pour concrete, wait for the concrete to be formed, repeat this process, and carry out the construction of the arc floor of the flood discharge tunnel;

[0026] S12. When the arc bottom plate needs to be replaced, the No. 2 hydraulic cylinder is controlled to extend, and then the No. 1 hydraulic cylinder is controlled to retract, so that the arc bottom plate contacts the ground. As the limiting block continues to fall, the limiting block can be disconnected from the extension frame, and the limiting block rotates. The limiting block is restricted by the No. 2 limiting plate, and then the No. 1 hydraulic cylinder is extended to disconnect the limiting block from the No. 1 connecting groove, and the arc bottom plate is taken out. Then the new arc bottom plate is placed under the No. 1 limiting plate, and steps S4-S7 are repeated to complete the replacement.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, the limiting block can be rotated by setting the traction rope and the limiting block, so that the traction rope is wound together, which can increase the traction strength. At the same time, the design can apply force to the limiting block. When the arc bottom plate is replaced, the No. 2 hydraulic cylinder is extended and the No. 1 hydraulic cylinder is retracted. After the arc bottom plate contacts the ground, the traction rope can squeeze the limiting block downward. When the limiting block is disconnected from the extension frame, the limiting block can be driven to rotate by the traction rope, and the position of the limiting block is limited by the No. 2 limiting plate to ensure that the limiting block can be taken out of the No. 1 connecting groove. Then, the No. 2 hydraulic cylinder is retracted or the No. 1 hydraulic cylinder is extended, so that the limiting block can be disconnected from the No. 1 connecting groove and the arc bottom plate can be taken out. In this way, the disassembly and assembly of the arc bottom plate is faster and simpler to use, so as to improve the construction efficiency of the arc floor of the flood discharge tunnel.

[0029] 2. In the present invention, the hexagonal nut is provided to facilitate the disassembly and replacement of the traction rope, and this method has a simple structure and low cost. By providing a magnet, when the limiting block is clamped with the extension frame, the connection strength between the limiting block and the extension frame can be increased by adsorption of the magnet, thereby avoiding the limiting block and the extension frame from being disconnected when the limiting block is connected to the arc bottom plate, thereby ensuring the stability of the arc bottom plate during installation.

[0030] 3. In the present invention, the side panels are arranged to facilitate the lifting of the arc-shaped bottom plate. The second and third reinforcing ribs are arranged to increase the strength of the arc-shaped bottom plate to increase its service life. The side slide grooves are arranged to guide the No. 1 connecting frame to increase its stability during use. The side connecting frame is arranged to increase the strength of the bottom connecting frame to make the movement of the mobile frame more stable. The limiting arc grooves are arranged to guide the position of the bottom plate to provide higher stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The three-dimensional structure of the arc-shaped floor trolley for flood discharge tunnel and the construction method thereof of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 2 The invention discloses a curved floor trolley for a flood discharge tunnel and a construction method thereof Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0033] Figure 3 The structure of the arc-shaped floor trolley for flood discharge tunnel and its construction method of the present invention is shown in FIG. Figure 2 ;

[0034] Figure 4 The invention discloses a curved floor trolley for a flood discharge tunnel and a construction method thereof Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0035] Figure 5It is a three-dimensional structural schematic diagram of a curved floor trolley for a flood discharge tunnel and a curved bottom plate in a construction method thereof according to the present invention;

[0036] Figure 6 It is a schematic diagram of the lower end structure of a connecting plate in a curved floor trolley for a flood discharge tunnel and a construction method thereof according to the present invention;

[0037] Figure 7 It is a schematic diagram of the connection structure between the second hydraulic cylinder and the limiting block in a curved floor trolley for a flood discharge tunnel and a construction method thereof according to the present invention;

[0038] Figure 8 The invention discloses an exploded view of the connection structure between a second hydraulic cylinder and a limiting block in a curved floor trolley for a flood discharge tunnel and a construction method thereof.

[0039] In the figure:

[0040] 1. Needle beam frame; 2. Support mesh plate; 3. No. 1 side frame; 4. No. 1 hydraulic cylinder; 5. Side slide; 6. No. 1 connecting frame; 7. Bottom support frame; 8. Connecting claw; 9. Limiting frame; 10. Moving frame; 11. Support plate; 12. Slide rail; 13. Arc bottom plate; 14. Side connecting frame; 15. Bottom frame; 16. No. 2 side frame; 17. No. 2 connecting frame; 18. No. 1 limiting plate; 19. Side fixing frame; 20. No. 2 hydraulic Cylinder; 21. Support frame; 22. No. 1 reinforcing rib; 23. Through slot; 24. Limiting arc slot; 25. Bottom plate; 26. Guide rail; 27. Side plate; 28. No. 2 reinforcing rib; 29. ​​No. 3 reinforcing rib; 30. Connecting plate; 31. No. 1 connecting slot; 32. Extension frame; 33. No. 2 limiting plate; 34. Hexagonal nut; 35. Towing rope; 36. Limiting card table; 37. Limiting block; 38. Magnet; 39. No. 2 connecting slot. DETAILED DESCRIPTION

[0041] 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 implementation regulations 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 creative work are within the scope of protection of the present invention.

[0042] Example 1: Reference Figure 1 - Figure 8As shown: A curved floor trolley for a flood discharge tunnel includes a needle beam frame 1, a movable frame 10 is arranged outside the needle beam frame 1, a bottom frame 15 is fixedly connected to the lower end of the movable frame 10, a curved bottom plate 13 is arranged below the bottom frame 15, a second reinforcing rib 28 is fixedly connected to the upper end of the curved bottom plate 13, a connecting plate 30 is arranged above the curved bottom plate 13, a third reinforcing rib 29 is fixedly connected between the lower end of the connecting plate 30 and the curved bottom plate 13, and the connecting plate A No. 1 connecting groove 31 is provided at the upper end of the connecting plate 30 and the upper ends of the No. 3 reinforcing ribs 29 and the No. 2 reinforcing ribs 28. The lower end of the connecting plate 30 is fixedly connected to an extension frame 32. The lower end of the extension frame 32 is fixedly connected to a No. 2 limiting plate 33. A limiting block 37 is provided inside the extension frame 32. The upper end of the limiting block 37 is fixedly connected to a traction rope 35. The upper end of the traction rope 35 is fixedly connected to the bottom plate 25. The upper end of the bottom plate 25 is installed with a No. 2 hydraulic cylinder 20.

[0043] In the present invention, by setting the traction rope 35 and the limit block 37, the limit block 37 can be rotated so that the traction rope 35 is entangled together, which can increase the traction strength. At the same time, the design can apply force to the limit block 37. When the arc bottom plate 13 is replaced, the No. 2 hydraulic cylinder 20 is extended and the No. 1 hydraulic cylinder 4 is retracted. After the arc bottom plate 13 contacts the ground, the traction rope 35 can squeeze the limit block 37 downward. When the limit block 37 is disconnected from the extension frame 32, the traction rope 35 can be used to drive the limit block 37 to rotate, and the No. 2 limit plate 33 is used to limit the position of the limit block 37 to ensure that the limit block 37 can be taken out from the No. 1 connecting groove 31. Then, the No. 2 hydraulic cylinder 20 is retracted or the No. 1 hydraulic cylinder 4 is extended, so that the limit block 37 can be disconnected from the No. 1 connecting groove 31, so that the arc bottom plate 13 can be taken out. In this way, the disassembly and assembly of the arc bottom plate 13 is faster and simpler to use, so as to improve the construction efficiency of the arc floor of the flood discharge tunnel.

[0044] Embodiment 2: Figure 1 - Figure 8 As shown, the upper end of the base plate 25 is fixedly connected with a hexagonal nut 34, and the hexagonal nut 34 is threadedly connected to the output end of the No. 2 hydraulic cylinder 20, and the middle part of the upper end of the limiting block 37 is fixedly connected with a limiting clamping table 36, and No. 2 connecting grooves 39 are provided on both sides of the upper end of the limiting block 37, and a magnet 38 is fixedly connected inside the No. 2 connecting groove 39, and the upper end of the needle beam frame 1 is fixedly connected with a slide rail 12, and the upper end of the slide rail 12 is fixedly connected with a support plate 11, and the support plate 11 is slidably connected with a guide rail 26 inside, and the guide rail 26 is fixedly connected to the moving frame 10, and both sides of the moving frame 10 are rotatably connected with rollers, and the rollers overlap the needle beam frame 1, and the two sides of the upper end of the needle beam frame 1 are used to install a winch to drive the moving frame 10 to move, and the outer side of the moving frame 10 and the upper end of the bottom frame 15 are fixedly connected with a side connecting frame 14.

[0045] In the present invention, the hexagonal nut 34 is provided to facilitate the disassembly and replacement of the traction rope 35, and this method has a simple structure and low cost. By providing the magnet 38, when the limiting block 37 is clamped with the extension frame 32, the magnet 38 can be adsorbed to increase the connection strength between the limiting block 37 and the extension frame 32, thereby avoiding the limiting block 37 and the extension frame 32 from being disconnected when the limiting block 37 is connected to the arc bottom plate 13, thereby ensuring the stability of the arc bottom plate 13 during installation.

[0046] Embodiment 3: According to Figure 1 - Figure 5 As shown, both ends of the bottom connecting frame 15 are fixedly connected with the second side connecting frame 16, the lower end of the bottom connecting frame 15 is fixedly connected with the second connecting frame 17, the lower end of the second connecting frame 17 is fixedly connected with the first limiting plate 18, the upper end of the first limiting plate 18 is fixedly connected with the support frame 21, the second hydraulic cylinder 20 is fixedly connected to the support frame 21, the two sides of the upper end of the first limiting plate 18 and the side connecting frame 14 are fixedly connected with the side fixing frame 19, the upper end of the first limiting plate 18 is located on the inner side of the support frame 21 and is penetrated by a through groove 23, the interior of the support frame 21 is provided with a limiting arc groove 24, the bottom plate 25 is slidably connected with the limiting arc groove 24, and the support frame 21 is fixedly connected with the bottom plate 25. One side is fixedly connected with a No. 1 reinforcing rib 22, both sides of the upper end of the arc-shaped bottom plate 13 are fixedly connected with side plates 27, the lower end of the needle beam frame 1 is installed with a supporting mesh plate 2, both ends of both sides of the needle beam frame 1 are fixedly connected with a No. 1 side connecting frame 3, the inner side of the No. 1 side connecting frame 3 is provided with a side slide groove 5, the inner side of the side slide groove 5 is slidably connected with a No. 1 connecting frame 6, the interior of the No. 1 side connecting frame 3 is fixedly connected with a No. 1 hydraulic cylinder 4, the output end of the No. 1 hydraulic cylinder 4 is fixedly connected to the No. 1 connecting frame 6, the lower end of the No. 1 connecting frame 6 is fixedly connected with a connecting claw 8, the lower end of the connecting claw 8 is installed with a limiting frame 9, and a bottom support frame 7 is installed between the connecting claw 8 and the limiting frame 9.

[0047] In the present invention, the side panels 27 are provided to facilitate the lifting of the arc-shaped bottom plate 13. The second reinforcing ribs 28 and the third reinforcing ribs 29 are provided to increase the strength of the arc-shaped bottom plate 13 to increase its service life. The side slide grooves 5 are provided to guide the first connecting frame 6 to increase its stability during use. The side connecting frame 14 is provided to increase the strength of the bottom connecting frame 15 to make the movement of the mobile frame 10 more stable. The limiting arc grooves 24 are provided to guide the position of the bottom plate 25 to provide higher stability.

[0048] Embodiment 4: A construction method of a curved floor trolley for a flood discharge tunnel, comprising the following steps:

[0049] Step 1: Determine the construction location and size of the curved floor according to the construction drawings and actual site conditions;

[0050] Step 2: Select a suitable curved bottom plate 13 according to construction requirements, and transport the curved bottom plate 13 and the components of the device to the construction site;

[0051] Step 3, connect the mobile frame 10 with the needle beam frame 1, and place the selected arc bottom plate 13 under the bottom connecting frame 15;

[0052] Step 4: The No. 1 hydraulic cylinder 4 contracts until the limiting block 37 is at a height capable of connecting with the No. 1 connecting groove 31;

[0053] Step 5: According to the position of the second limiting plate 33, rotate the limiting block 37 180 degrees and insert the limiting block 37 into the extension frame 32;

[0054] Step 6: Rotate the limiting block 37 by another 90°, lift the traction rope 35 upward, and make the limiting block 37 engage with the extension frame 32;

[0055] Step 7: Control the second hydraulic cylinder 20 to contract and lift the limiting block 37, so that the arc bottom plate 13 moves until the upper end of the connecting plate 30 contacts the lower end of the first limiting plate 18, and the limiting clamping platform 36 is clamped with the through groove 23;

[0056] Step 8: Tie the steel bars in the construction area, apply a release agent to the lower end of the arc bottom plate 13, move the arc bottom plate 13 above the steel bars, and control the No. 1 hydraulic cylinder 4 to contract so that the arc bottom plate 13 is aligned with the area where the floor needs to be poured;

[0057] Step 9: Pour concrete into the steel bar area. After the concrete solidifies, the No. 1 hydraulic cylinder 4 contracts to suspend the bottom support frame 7. The winch is controlled to start to move the needle beam frame 1, and a sleeper is placed under one of the bottom support frames 7.

[0058] Step 10: The No. 1 hydraulic cylinder 4 is extended to demould the arc bottom plate 13 from the floor, and then the concrete at the lower end of the arc bottom plate 13 is flushed and a release agent is applied;

[0059] Step 11: Continue to tie the steel bars on one side of the formed arc floor. After the tying is completed, retract the No. 1 hydraulic cylinder 4 to make the arc bottom plate 13 located at the desired position, pour concrete, wait for the concrete to be formed, repeat this process, and construct the arc floor of the flood discharge tunnel;

[0060] Step 12. When the arc bottom plate 13 needs to be replaced, control the No. 2 hydraulic cylinder 20 to extend, and then control the No. 1 hydraulic cylinder 4 to retract, so that the arc bottom plate 13 contacts the ground. As the limiting block 37 continues to fall, the limiting block 37 can be disconnected from the extension frame 32, and the limiting block 37 rotates. The limiting block 37 is restricted by the No. 2 limiting plate 33, and then the No. 1 hydraulic cylinder 4 is extended to disconnect the limiting block 37 from the No. 1 connecting groove 31, and the arc bottom plate 13 is taken out, and then the new arc bottom plate 13 is placed under the No. 1 limiting plate 18. Repeat steps 4 to 7 to complete the replacement.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A curved floor trolley for a flood discharge tunnel, comprising a needle beam frame (1), characterized in that: A movable frame (10) is arranged on the outer side of the needle beam frame (1), a bottom connecting frame (15) is fixedly connected to the lower end of the movable frame (10), an arc-shaped bottom plate (13) is arranged below the bottom connecting frame (15), a second reinforcing rib (28) is fixedly connected to the upper end of the arc-shaped bottom plate (13), a connecting plate (30) is arranged above the arc-shaped bottom plate (13), a third reinforcing rib (29) is fixedly connected between the lower end of the connecting plate (30) and the arc-shaped bottom plate (13), and a third reinforcing rib (29) is fixedly connected between the upper end of the connecting plate (30) and the third reinforcing rib A first connecting groove (31) is provided at the upper end of the connecting plate (30) and the second reinforcing rib (28); the lower end of the connecting plate (30) is fixedly connected to an extension frame (32); the lower end of the extension frame (32) is fixedly connected to a second limiting plate (33); a limiting block (37) is provided inside the extension frame (32); the upper end of the limiting block (37) is fixedly connected to a traction rope (35); the upper end of the traction rope (35) is fixedly connected to a bottom plate (25); and the upper end of the bottom plate (25) is installed with a second hydraulic cylinder (20).

2. The curved floor trolley for flood discharge tunnel according to claim 1, characterized in that: A hexagonal nut (34) is fixedly connected to the upper end of the base plate (25), and the hexagonal nut (34) is threadedly connected to the output end of the No. 2 hydraulic cylinder (20).

3. The curved floor trolley for flood discharge tunnel according to claim 2, characterized in that: A limiting clamping platform (36) is fixedly connected to the middle of the upper end of the limiting block (37), and a second connecting groove (39) is provided on both sides of the upper end of the limiting block (37), and a magnet (38) is fixedly connected inside the second connecting groove (39).

4. The arc-shaped floor trolley for flood discharge tunnel according to claim 3 is characterized in that: The upper end of the needle beam frame (1) is fixedly connected to a slide rail (12), the upper end of the slide rail (12) is fixedly connected to a support plate (11), and the interior of the support plate (11) is slidably connected to a guide rail (26).

5. The curved floor trolley for flood discharge tunnel according to claim 4, characterized in that: The guide rail (26) is fixedly connected to the movable frame (10), and rollers are rotatably connected to both sides of the movable frame (10), and the rollers overlap the needle beam frame (1). The two sides of the upper end of the needle beam frame (1) are used to install a winch to drive the movable frame (10) to move.

6. The arc-shaped floor trolley for flood discharge tunnel according to claim 5, characterized in that: A side connecting frame (14) is fixedly connected between the outer side of the movable frame (10) and the upper end of the bottom connecting frame (15), and a second side connecting frame (16) is fixedly connected to both ends of the bottom connecting frame (15).

7. The arc-shaped floor trolley for flood discharge tunnel according to claim 6, characterized in that: The lower end of the bottom connecting frame (15) is fixedly connected to a No. 2 connecting frame (17), the lower end of the No. 2 connecting frame (17) is fixedly connected to a No. 1 limiting plate (18), the upper end of the No. 1 limiting plate (18) is fixedly connected to a supporting frame (21), the No. 2 hydraulic cylinder (20) is fixedly connected to the supporting frame (21), and side fixing frames (19) are fixedly connected between the two sides of the upper end of the No. 1 limiting plate (18) and the side connecting frames (14).

8. The curved floor trolley for flood discharge tunnel according to claim 7, characterized in that: The upper end of the No. 1 limiting plate (18) is located on the inner side of the support frame (21) and is provided with a through groove (23); the interior of the support frame (21) is provided with a limiting arc groove (24); the bottom plate (25) is slidably connected to the limiting arc groove (24); one side of the support frame (21) is fixedly connected with a No. 1 reinforcing rib (22); both sides of the upper end of the arc-shaped bottom plate (13) are fixedly connected with side plates (27); the lower end of the needle beam frame (1) is provided with a supporting mesh plate (2); both ends of both sides of the needle beam frame (1) are fixedly connected with a No. 1 side connecting frame (3); and the inner side of the No. 1 side connecting frame (3) is provided with a side sliding groove (5).

9. The curved floor trolley for flood discharge tunnel according to claim 8, characterized in that: The side sliding groove (5) is internally slidably connected to a No. 1 connecting frame (6), the No. 1 side connecting frame (3) is internally fixedly connected to a No. 1 hydraulic cylinder (4), the output end of the No. 1 hydraulic cylinder (4) is fixedly connected to the No. 1 connecting frame (6), the lower end of the No. 1 connecting frame (6) is fixedly connected to a connecting claw (8), the lower end of the connecting claw (8) is installed with a limiting frame (9), and a bottom support frame (7) is installed between the connecting claw (8) and the limiting frame (9).

10. A construction method of a curved floor trolley for a flood discharge tunnel, characterized in that: The method of using a curved floor trolley for a flood discharge tunnel as claimed in any one of claims 1 to 9 comprises the following steps: S1. Determine the construction location and size of the curved floor according to the construction drawings and actual site conditions; S2. According to the construction requirements, a suitable arc bottom plate (13) is selected, and the arc bottom plate (13) and the components of the device are transported to the construction site; S3, connecting the movable frame (10) to the needle beam frame (1), and placing the selected arc-shaped bottom plate (13) below the bottom connection frame (15); S4, the No. 1 hydraulic cylinder (4) contracts until the limiting block (37) is at a height capable of connecting with the No. 1 connecting groove (31); S5. According to the position of the second limiting plate (33), the limiting block (37) is rotated 180°, and the limiting block (37) is inserted into the extension frame (32); S6, rotating the limiting block (37) by another 90°, lifting the traction rope (35) upward, so that the limiting block (37) is engaged with the extension frame (32); S7, controlling the second hydraulic cylinder (20) to contract and lift the limiting block (37), thereby moving the arc bottom plate (13) until the upper end of the connecting plate (30) contacts the lower end of the first limiting plate (18), and the limiting clamping platform (36) is clamped with the through groove (23); S8, tie the steel bars in the construction area, apply a release agent to the lower end of the arc-shaped bottom plate (13), move the arc-shaped bottom plate (13) above the steel bars, and control the first hydraulic cylinder (4) to contract so that the arc-shaped bottom plate (13) is aligned with the area where the floor needs to be poured; S9, pouring concrete into the steel bar area, and after the concrete solidifies, the No. 1 hydraulic cylinder (4) contracts to suspend the bottom support frame (7), and the winch is controlled to start to move the needle beam frame (1), and a sleeper is placed under one of the bottom support frames (7); S10, the No. 1 hydraulic cylinder (4) extends to demould the arc bottom plate (13) and the floor, and then the concrete at the lower end of the arc bottom plate (13) is washed and a release agent is applied; S11, continue to tie the steel bars on one side of the formed arc floor. After the tying is completed, retract the No. 1 hydraulic cylinder (4) to make the arc bottom plate (13) located at the required position, pour concrete, wait for the concrete to be formed, repeat this process, and carry out the construction of the arc floor of the flood discharge tunnel; S12, when the arc bottom plate (13) needs to be replaced, the No. 2 hydraulic cylinder (20) is controlled to extend, and then the No. 1 hydraulic cylinder (4) is controlled to retract, so that the arc bottom plate (13) contacts the ground, and as the limiting block (37) continues to fall, the limiting block (37) can be disconnected from the extension frame (32), the limiting block (37) rotates, and the limiting block (37) is restricted by the No. 2 limiting plate (33), and then the No. 1 hydraulic cylinder (4) is extended to disconnect the limiting block (37) from the No. 1 connecting groove (31), and the arc bottom plate (13) is taken out, and then a new arc bottom plate (13) is placed under the No. 1 limiting plate (18), and steps S4-S7 are repeated to complete the replacement.

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