A bottom bracket for preventing deformation of a multi-layer shield segment reinforcement cage stack

Abstract

The application relates to a bottom bracket for preventing deformation of stacked multi-layer shield segment reinforcement cages and belongs to the technical field of segment reinforcement cage storage, which comprises lifting frames, the lifting frames are in two groups, bearings A are fixedly connected to the top and bottom of the two groups of lifting frames, lifting threaded rods are rotationally connected to the interiors of the two groups of bearings A, positioning blocks are threadedly connected to the outer surfaces of the lifting threaded rods, platforms are fixedly connected to the bottoms of the two groups of lifting frames, clamping grooves are arranged in the interiors of the platforms, and gears A are fixedly connected to the bottom ends of the lifting threaded rods in a penetrating mode. The application drives the rotation of a rotating shaft and a gear B connected with the rotating shaft by rotating a rotating wheel A, the gear B is engaged with the gear A, the gear A and the lifting threaded rod are driven to rotate, the positioning blocks on the outer surfaces of the lifting threaded rods are adjusted upwards or downwards in the lifting frames, the height of the positioning blocks can be adjusted according to the size of the reinforcement cage, and the actual arc-shaped profile of the reinforcement cage can be adapted.

Description

Technical Field

[0001] This application relates to the technical field of storing steel reinforcement cages for tunnel segments, and in particular to a bottom support frame for preventing deformation caused by stacking multiple layers of steel reinforcement cages for tunnel segments. Background Technology

[0002] In the construction of shield tunnels, precast concrete shield segments are an important component. During the segment production process, the steel reinforcement cage must be placed in a steel mold before concrete is poured. The segment reinforcement cage is a complete grid formed by steel reinforcement, which helps to restrain the concrete and improve the integrity of the concrete component.

[0003] The steel reinforcement cages for tunnel segments are semi-circular in shape. After welding, multiple cages are usually temporarily stacked and stored in a designated location. Once the required quantity is reached, they are hoisted one by one for the next step of concrete pouring. The bottom support for stacking the steel reinforcement cages cannot be adjusted according to the size of the cages. Mismatched sizes will cause uneven stress on the cages, resulting in excessive local pressure after stacking. This can easily lead to problems such as bending of the main reinforcement bars and detachment of the stirrups. This will directly cause uneven stress on the cages, making them prone to deformation and requiring additional rework to ensure project quality. Furthermore, the poor versatility will increase equipment procurement and management costs, while limiting construction flexibility and slowing down the work progress. Utility Model Content

[0004] The purpose of this application is to provide a base support for preventing deformation of multi-layer shield tunnel segment reinforcement cages when stacked. It has advantages such as easy adjustment and solves the problem that the reinforcement cages of the tunnel segments are semi-circular in shape. After welding, multiple reinforcement cages are usually temporarily stacked and stored in a designated location. Once the quantity reaches the standard, they are hoisted one by one for the next concrete pouring work. The base support for stacking the reinforcement cages cannot be adjusted according to the size of the reinforcement cage. The size mismatch will cause uneven stress on the reinforcement cage. After stacking, the local pressure will be too large, which will easily lead to problems such as bending of the main reinforcement and detachment of the stirrups. This will directly lead to uneven stress on the reinforcement cage, easy deformation, and additional rework to ensure project quality. It will also increase the equipment procurement and management costs due to poor versatility, while limiting construction flexibility and slowing down the work progress.

[0005] The technical solution provided in this application for a bottom support frame to prevent deformation of multi-layer shield tunnel segment reinforcement cage stacking is as follows: it includes a lifting frame, which has two sets. The top and bottom of the two sets of lifting frames are fixedly connected to bearings A. The bearings A are rotatably connected to the inside of the two sets of bearings A. The outer surface of the lifting threaded rod is threadedly connected to a positioning block. The bottom of the two sets of lifting frames is fixedly connected to a platform. The platform has a slot inside. The bottom end of the lifting threaded rod passes through the lifting frame and is fixedly connected to a gear A. The outer surface of the gear A is meshed with a gear B. The side of the gear B is fixedly connected to a rotating shaft. The outer surface of the rotating shaft is rotatably connected to a bearing B. The end of the rotating shaft is fixedly connected to a wheel A. By adopting the above technical solution, the rotating wheel A drives the connected rotating shaft and gear B to rotate. Gear B meshes with gear A, which in turn drives gear A and the lifting threaded rod to rotate. This allows the positioning block on the outer surface of the lifting threaded rod to be adjusted up or down inside the lifting frame. The height of the positioning block can be adjusted according to the size of the rebar cage to fit the actual arc contour of the rebar cage. This avoids uneven stress on the rebar cage due to size mismatch, excessive local pressure after stacking, and phenomena such as bending of the main bars and detachment of stirrups.

[0006] Preferably, the lifting frame has a guide rail inside, the positioning block has limit blocks fixedly connected to both sides, and the positioning block has a support block fixedly connected to the side.

[0007] By adopting the above technical solution, the guide rail inside the lifting frame provides a fixed path for the movement of the positioning block. The limiting blocks on both sides of the positioning block can slide up and down along the guide rail with the positioning block, and can also prevent the positioning block from leaving the guide rail, thus cooperating with it to ensure the stability and safety of the lifting. The support blocks on the side of the positioning block are used to support the steel cage.

[0008] Preferably, one set of the platforms has a support platform fixedly connected to its bottom, and the support platform has a track A inside. The other set of the platforms has a slider fixedly connected to its bottom, and the track A is slidably connected to the slider.

[0009] By adopting the above technical solution, the bottom of one set of platforms is fixedly connected to the support platform, and the support platform at the bottom of the other set of platforms has a track A inside, and the slider fixed at the bottom of the platform is slidably connected to it. Through the cooperation of the two, the relative movement of the two sets of platforms can be realized, and the position adjustment function is available.

[0010] Preferably, bearings C are fixedly connected to both ends of the track A, and adjusting screws are rotatably connected inside the two sets of bearings C. The adjusting screws are threadedly connected to the slider, and a transmission wheel is fixedly connected to the outer surface of the adjusting screw. A transmission belt is sleeved on the outer surface of the transmission wheel, and a rotating wheel B is fixedly connected to the end of the adjusting screw.

[0011] By adopting the above technical solution, rotating wheel B drives the transmission wheel and transmission belt to rotate, which in turn drives another set of transmission wheels to rotate together, realizing the synchronous rotation of multiple sets of adjusting screws. When the adjusting screws rotate, the slider cannot rotate synchronously with the adjusting screws due to the restriction of track A, and can only move in a straight line along the direction of track A, thereby realizing the adjustment of the platform position.

[0012] Preferably, the top of the support platform is provided with a track B, and two sets of arc-shaped pads are slidably connected inside the track B.

[0013] By adopting the above technical solution, track B is set on the top of the support platform to provide sliding guidance for the arc-shaped pads. The two sets of arc-shaped pads can adjust their spacing by sliding within track B to adapt to arc-shaped objects of different diameters and improve the overall load-bearing stability.

[0014] Preferably, the outer surface of the support block and the arc-shaped pad block are slidably connected with a steel cage.

[0015] By adopting the above technical solution, the curved surfaces of the support block and the arc-shaped pad block can fit the outer contour of the steel cage, which can support the outer contour of the steel cage and disperse the pressure through curved surface contact, thus avoiding local pressure deformation of the steel cage.

[0016] Preferably, the bottom of the support platform is fixedly connected to a leg, and the outer surface of the leg is threadedly connected to a fixing plate.

[0017] By adopting the above technical solution, the tripod and fixing plate can be set to adapt to different ground conditions. When dealing with uneven ground, the height of the fixing plate on the outer surface of each tripod can be adjusted individually to ensure that the support platform is always in a horizontal state.

[0018] In summary, this application includes at least one of the following beneficial technical effects: This type of base support frame prevents deformation of multi-layer shield tunnel segment reinforcement cages by rotating a rotating wheel A to drive a connected rotating shaft and gear B to rotate. Gear B meshes with gear A, which in turn drives gear A and a lifting threaded rod to rotate. This allows the positioning block on the outer surface of the lifting threaded rod to be adjusted upwards or downwards inside the lifting frame. The height of the positioning block can be adjusted according to the size of the reinforcement cage to fit the actual arc contour of the reinforcement cage. This avoids uneven stress on the reinforcement cage due to size mismatch, excessive local pressure after stacking, and phenomena such as bending of the main reinforcement and detachment of stirrups. Attached Figure Description

[0019] Figure 1 This is a frontal three-dimensional structural diagram of this application; Figure 2 This is a frontal planar structural diagram of this application; Figure 3 This is a three-dimensional sectional view of the structure of this application; Figure 4 This is a structural schematic diagram of the lifting assembly of this application. Figure 5 This is a schematic diagram of the structure of the adjustment component in this application.

[0020] In the picture: 1. Lifting frame; 2. Bearing A; 3. Lifting threaded rod; 4. Positioning block; 5. Platform; 6. Slot; 7. Gear A; 8. Gear B; 9. Rotating shaft; 10. Bearing B; 11. Rotating wheel A; 12. Guide rail; 13. Limiting block; 14. Support block; 15. Support platform; 16. Track A; 17. Sliding block; 18. Bearing C; 19. Adjusting screw; 20. Transmission wheel; 21. Transmission belt; 22. Rotating wheel B; 23. Track B; 24. Arc-shaped pad; 25. Reinforcing cage; 26. Leg frame; 27. Fixing plate. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0022] Example 1: A bottom support for preventing deformation of multi-layer shield tunnel segment reinforcement cages, referring to... Figure 1 , Figure 2 , Figure 3 and Figure 4 The system includes a lifting frame 1, which has two sets. The top and bottom of the two sets of lifting frames 1 are fixedly connected to bearings A2. The two sets of bearings A2 are rotatably connected to lifting threaded rods 3. The outer surface of the lifting threaded rods 3 is threadedly connected to positioning blocks 4. The bottom of the two sets of lifting frames 1 is fixedly connected to a platform 5. The platform 5 has a slot 6 inside. The bottom end of the lifting threaded rod 3 passes through the lifting frame 1 and is fixedly connected to a gear A7. The outer surface of the gear A7 is meshed with a gear B8. The side of the gear B8 is fixedly connected to a rotating shaft 9. The outer surface of the rotating shaft 9 is rotatably connected to a bearing B10. The end of the rotating shaft 9 is fixedly connected to a wheel A11.

[0023] The rotating wheel A11 drives the connected rotating shaft 9 and gear B8 to rotate. Gear B8 meshes with gear A7, which in turn drives gear A7 to rotate with the lifting threaded rod 3. This allows the positioning block 4 on the outer surface of the lifting threaded rod 3 to be adjusted up or down inside the lifting frame 1. The height of the positioning block 4 can be adjusted according to the size of the rebar cage 25 to match the actual arc contour of the rebar cage 25. This avoids uneven stress on the rebar cage 25 due to size mismatch, excessive local pressure after stacking, and phenomena such as bending of the main bars and detachment of stirrups.

[0024] Example 2: A bottom support for preventing deformation of multi-layer shield tunnel segment reinforcement cages, referring to... Figure 1 , Figure 2 , Figure 3 and Figure 5One set of platforms 5 has a support platform 15 fixedly connected to its bottom. The support platform 15 has a track A16 inside. Another set of platforms 5 has a slider 17 fixedly connected to its bottom. The track A16 is slidably connected to the slider 17. Bearings C18 are fixedly connected to both ends of the track A16. Adjusting screws 19 are rotatably connected inside the two sets of bearings C18. The adjusting screws 19 are threadedly connected to the slider 17. A transmission wheel 20 is fixedly connected to the outer surface of the adjusting screw 19. A transmission belt 21 is sleeved on the outer surface of the transmission wheel 20. A rotating wheel B22 is fixedly connected to the end of the adjusting screw 19. One set of platforms... The bottom of platform 5 is fixedly connected to support platform 15. The support platform 15 at the bottom of another set of platforms 5 has a track A16 inside, and the slider 17 fixed at the bottom of platform 5 is slidably connected to it. By rotating the rotating wheel B22, the transmission wheel 20 and the transmission belt 21 are driven to rotate, which in turn drives another set of transmission wheels 20 to rotate together, so that multiple sets of adjusting screws 19 rotate synchronously. When the adjusting screws 19 rotate, the slider 17 cannot rotate synchronously with the adjusting screws 19 due to the restriction of track A16. It can only move in a straight line along the direction of track A16, so as to realize the relative movement of the two sets of platforms 5 and have the function of position adjustment.

[0025] Example 3: A bottom support for preventing deformation of multi-layer shield tunnel segment reinforcement cages, referring to... Figure 1 , Figure 2 and Figure 3 The lifting frame 1 has a guide rail 12 inside. Limiting blocks 13 are fixedly connected to both sides of the positioning block 4. Support blocks 14 are fixedly connected to the sides of the positioning block 4. A track B23 is provided on the top of the support platform 15. Two sets of arc-shaped pads 24 are slidably connected inside the track B23. A steel cage 25 is slidably connected to the outer surface of the support block 14 and the arc-shaped pads 24. A leg 26 is fixedly connected to the bottom of the support platform 15. A fixing plate 27 is threadedly connected to the outer surface of the leg 26. The guide rail 12 inside the lifting frame 1 provides a fixed path for the movement of the positioning block 4. The limiting blocks 13 on both sides of the positioning block 4 can slide up and down along the guide rail 12 with the positioning block 4, and can also prevent the positioning block 4 from detaching from the guide rail 12, forming a coordinated movement. To ensure stable and safe lifting, track B23 is located on top of support platform 15, providing sliding guidance for arc-shaped pads 24. The two sets of arc-shaped pads 24 can slide and adjust their spacing within track B23 to accommodate arc-shaped objects of different diameters, improving overall load-bearing stability. The arc-shaped surfaces of support block 14 and arc-shaped pads 24 can conform to the outer contour of steel cage 25, supporting the outer contour of steel cage 25. The pressure is dispersed through curved surface contact, preventing localized deformation of steel cage 25. The setting of legs 26 and fixing plates 27 can adapt to different ground conditions. When dealing with uneven ground, the height of fixing plates 27 on the outer surface of each set of legs 26 can be finely adjusted to ensure that support platform 15 is always in a horizontal state.

[0026] The implementation principle of this application embodiment is as follows: By setting up the legs 26 and the fixed plate 27, it can adapt to different ground conditions. When dealing with uneven ground, the height of the fixed plate 27 on the outer surface of each set of legs 26 can be finely adjusted to ensure that the support platform 15 is always in a horizontal state. By rotating the rotating wheel B22, the transmission wheel 20 and the transmission belt 21 are driven to rotate, which in turn drives another set of transmission wheels 20 to rotate together, realizing the synchronous rotation of multiple sets of adjusting screws 19. When the adjusting screws 19 rotate, the slider 17 cannot rotate synchronously with the adjusting screws 19 due to the restriction of the track A16, and moves linearly along the track A16 to adjust it to match the size of the steel cage 25. Driven by the rotating wheel A11 The connected rotating shaft 9 rotates with gear B8, and gear B8 meshes with gear A7, which drives gear A7 to rotate with lifting threaded rod 3. This causes the positioning block 4 on the outer surface of the lifting threaded rod 3 to adjust its height inside the lifting frame 1 according to the size of the reinforcing cage 25, so as to adapt to the actual arc contour of the reinforcing cage 25. Finally, the size of the reinforcing cage 25 moves the two sets of arc-shaped pads 24 to slide and adjust the spacing within the track B23, thereby improving the overall load-bearing stability. The arc surfaces of the support block 14 and the arc-shaped pads 24 can fit the outer contour of the reinforcing cage 25, which can support the outer contour of the reinforcing cage 25. The pressure is dispersed through curved surface contact, avoiding local pressure deformation of the reinforcing cage 25.

Claims

1. A base support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages, comprising a lifting frame (1), characterized in that: The lifting frame (1) has two sets. The top and bottom of the two sets of lifting frames (1) are fixedly connected with bearings A (2). The two sets of bearings A (2) are rotatably connected with lifting threaded rods (3). The outer surface of the lifting threaded rods (3) is threaded with positioning blocks (4). The bottom of the two sets of lifting frames (1) is fixedly connected with platforms (5). The platform (5) has a slot (6) inside. The bottom end of the lifting threaded rods (3) passes through the lifting frame (1) and is fixedly connected with gears A (7). The outer surface of gears A (7) is meshed with gears B (8). The side of gears B (8) is fixedly connected with a rotating shaft (9). The outer surface of the rotating shaft (9) is rotatably connected with bearings B (10). The end of the rotating shaft (9) is fixedly connected with a wheel A (11).

2. The bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages as described in claim 1, characterized in that: The lifting frame (1) has a guide rail (12) inside, and the positioning block (4) has a limit block (13) fixedly connected to both sides, and a support block (14) fixedly connected to the side of the positioning block (4).

3. The bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages according to claim 2, characterized in that: One set of platforms (5) has a support platform (15) fixedly connected to its bottom, and the support platform (15) has a track A (16) inside. The other set of platforms (5) has a slider (17) fixedly connected to its bottom, and the track A (16) and the slider (17) are slidably connected.

4. The bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages according to claim 3, characterized in that: Both ends of the track A (16) are fixedly connected to bearings C (18), and the two sets of bearings C (18) are rotatably connected to adjusting screws (19). The adjusting screws (19) are threadedly connected to the slider (17). The outer surface of the adjusting screws (19) is fixedly connected to a transmission wheel (20), and the outer surface of the transmission wheel (20) is sleeved with a transmission belt (21). The end of the adjusting screws (19) is fixedly connected to a rotating wheel B (22).

5. A bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages as described in claim 3, characterized in that: The top of the support platform (15) is provided with a track B (23), and two sets of arc-shaped pads (24) are slidably connected inside the track B (23).

6. A bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages as described in claim 3, characterized in that: The outer surface of the support block (14) and the arc-shaped pad block (24) are slidably connected to a steel cage (25).

7. A bottom support frame for preventing deformation of multi-layer shield tunnel segment reinforcement cages as described in claim 3, characterized in that: The bottom of the support platform (15) is fixedly connected to a leg (26), and the outer surface of the leg (26) is rotatably connected to a fixing plate (27).

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