A box culvert formwork system

Abstract

This invention provides a box culvert formwork system. The box culvert formwork system includes a formwork system, a support system within the formwork system, and a traveling system connected to the lower end of the support system. The support system is equipped with a guide system for rolling contact with the inner wall of the lower end of the box culvert. The guide system includes supports and guide wheels. The supports are connected to both ends of the support system in a transverse direction (X). The guide wheels are rotatably mounted at the ends of the supports that are far apart from each other in the transverse direction (X). Multiple guide systems are spaced apart along the longitudinal direction (Y) of the formwork system. This invention provides a guide system on the support system that allows rolling contact with the inner wall of the lower end of the box culvert, ensuring that the formwork system remains centered during movement without adjustment, thus guaranteeing construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of box culvert construction technology, and in particular to a box culvert formwork system. Background Technology

[0002] Box culverts are typically constructed using cast-in-place concrete due to their structural characteristics. The specific process involves first binding the reinforcement of the box culvert base slab, erecting the formwork, and pouring the concrete on the pre-cast concrete foundation. The construction joint is usually located approximately 30cm above the finished surface of the base slab on the side wall of the box culvert. Then, the side wall reinforcement is bound. Following this, the formwork is erected, the inner and outer formwork of the side walls and the top formwork are installed, the top slab reinforcement is bound, and the side walls and top slab concrete are poured. Once the concrete reaches the design strength, the formwork is removed and the work is moved to the next construction surface.

[0003] Existing formwork systems, such as the sliding formwork system for cast-in-place box culverts disclosed in patent application publication number CN111088761A, include formwork components, support structures, and a traveling mechanism. The movement of the formwork system is achieved only through the traveling mechanism set at the lower end of the support structure. If the gap between the traveling wheels and the U-shaped steel rails is too large, lateral displacement is likely to occur during longitudinal movement. After moving to the position to be poured, the formwork system needs to be readjusted to be centered, which increases the workload and reduces construction efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a box culvert formwork system that does not require position adjustment, thereby ensuring construction efficiency.

[0005] The technical solution of this utility model is: a box culvert formwork system, including a formwork system, a support system within the formwork system, and a walking system connected to the lower end of the support system. The support system is provided with a guide system for rolling contact with the inner wall of the lower end of the box culvert. The guide system includes a bracket and guide wheels. The bracket is connected to both ends of the support system in the transverse X direction. The guide wheels are rotatably arranged at the ends of the brackets at opposite ends in the transverse X direction. Multiple guide systems are arranged at intervals along the longitudinal Y direction of the formwork system.

[0006] In the above scheme, a guiding system is set on the formwork system that can roll into contact with the inner wall of the lower end of the box culvert, so that the formwork system always stays in the center position during the movement without adjustment, thus ensuring construction efficiency.

[0007] Preferably, the box culvert formwork system further includes a support lifting system for adjusting the height of the formwork system, the support lifting system being located at the bottom of the formwork system.

[0008] Preferably, an adjusting component is connected between the formwork support system and the template system. The adjusting component includes a lifting lug plate connected to the template system, a sleeve connected to the lifting lug plate, and a screw threaded to the sleeve. The screw is rotatably mounted on the formwork support system, and a drive end is installed at the end of the screw away from the sleeve.

[0009] Preferably, the template system includes a surface layer and side molds hinged to both ends of the surface layer in the lateral direction X via hinge seats, the guide system is located below the side molds, and the support system is supported on the surface layer.

[0010] Preferably, the lower surface of the surface layer is provided with secondary ribs extending in the transverse direction X and main ribs extending in the longitudinal direction, and multiple secondary ribs and main ribs are connected in an alternating manner. The formwork support system includes uprights, the upper end of the uprights is provided with top supports adapted to the main ribs, and the lower end of the uprights is provided with bottom supports. Both the top supports and the bottom supports can extend and retract along the axial direction of the uprights. The guide system is connected between the side mold and the uprights.

[0011] Preferably, the formwork support system includes a square column-shaped support frame, and the walking system is connected to the lower end of the support frame; the top of the support frame is provided with a top scissor brace, the bottom of the support frame is provided with a bottom scissor brace, the longitudinal Y-shaped side of the support frame is provided with a longitudinal scissor brace, and the transverse X-shaped side of the support frame is provided with a transverse scissor brace.

[0012] Preferably, the walking system includes a slide rail disposed on the bottom plate of the box culvert and a walking wheel adapted in the slide rail, the walking wheel being installed at the bottom of the formwork support system.

[0013] Preferably, a displacement sensor is provided at the bottom of the formwork system.

[0014] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0015] I. This utility model sets up a guide system on the formwork system that can roll into contact with the inner side wall of the lower end of the box culvert. After the formwork system is centered by the guide system for the first time, no further adjustment is needed during subsequent movements, so that the formwork system is always in the centered position, thus ensuring construction efficiency.

[0016] Second, this utility model adopts an adjusting component to adjust the contraction and expansion of the side plate (side mold) of the template system. The adjusting component is a screw adjustment method with a drive end, which makes adjustment more convenient.

[0017] Third, the template system of this utility model is equipped with main and secondary ribs, which improves the integrity of the template system. In addition, brackets are set on the columns to match the main ribs, saving time caused by placing the ribs and repositioning the template after walking. Attached Figure Description

[0018] Figure 1A cross-sectional structural schematic diagram of the box culvert formwork system provided by this utility model;

[0019] Figure 2 A top view of the box culvert formwork system provided by this utility model;

[0020] Figure 3 For along Figure 1 AA section view diagram;

[0021] Figure 4 For along Figure 1 BB cross-sectional diagram in the middle;

[0022] Figure 5 Detailed structural diagram for mounting the adjustment component;

[0023] Figure 6 for Figure 1 Enlarged diagram of point C in the image.

[0024] In the attached diagram: 1. Hinge seat; 2. Surface layer; 3. Secondary rib; 4. Main rib; 5. Top scissor brace; 6. Top support; 7. Horizontal scissor brace; 8. Longitudinal scissor brace; 9. Upright pole; 10. Bottom scissor brace; 11. Base support; 12. Slide rail; 13. Traveling wheel; 14. Displacement sensor; 15. Jack; 16. Guide wheel; 17. Lifting lug plate; 18. Sleeve; 19. Lead screw; 20. Drive end; 21. Side formwork; 22. Formwork system; 23. Support system; 24. Traveling system; 25. Support lifting system; 26. Adjusting component; 27. Bracket; 28. Guide system; 29. ​​Support frame; 30. Connecting frame. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0026] like Figures 1-4 As shown, the box culvert formwork system provided in this embodiment includes a formwork system 22, a support system 23, a walking system 24, a support lifting system 25, a guide system 28, and an adjusting component 26.

[0027] The template system 22 is made of Q235B material and includes a surface layer 2 and side molds 21 hinged to both ends of the surface layer 2 in the transverse direction X via hinge seats 1. The bolts installed at the hinge seats 1 are M20 bolts of grade 8.8. The lower surface of the surface layer 2 is provided with secondary ribs 3 extending in the transverse direction X and main ribs 4 extending in the longitudinal direction, and multiple secondary ribs 3 and main ribs 4 are staggered and connected.

[0028] The surface layer 2 is 3mm thick, and the main rib 4 is 60mm × 80mm in size, with one rib arranged every 1m along the longitudinal direction Y. The secondary rib 3 is 40mm × 40mm in size, with one rib arranged every 1m along the transverse direction X.

[0029] The formwork support system 23 includes a square column-shaped support frame 29 and multiple uprights 9 connected to the support frame 29 along the longitudinal direction X and the transverse direction Y. The top of the support frame 29 is provided with a top scissor brace 5, the bottom of the support frame 29 is provided with a bottom scissor brace 10, the longitudinal scissor brace 8 is provided on the side of the support frame 29 along the longitudinal direction Y, and the transverse scissor brace 7 is provided on the side of the support frame 29 along the transverse direction X.

[0030] The upper end of the upright 9 is provided with a top support 6, which extends to the outer side above the support frame 29. The lower end of the upright 9 is provided with a bottom support 11. The top support 6 includes a screw threadedly connected to the upright 9 and a channel steel connected to the upper end of the screw, the channel steel being snapped onto the main rib 4. The bottom support 11 includes a screw threadedly connected to the upright 9 and a support plate connected to the lower end of the screw, the support plate being supported on the bottom plate of the box culvert.

[0031] The uprights 9 are made of hollow steel pipes of A48.3×3.2mm, and one upright is arranged every 1m×1m.

[0032] The bottom of the support frame 29 is provided with a walking system 24. The walking system 24 includes a slide rail 12 provided on the bottom plate of the box culvert and a walking wheel 13 adapted to the slide rail 12. The walking wheel 13 is installed at the bottom of the support frame 29 column.

[0033] The supporting lifting system 25 includes jacks 15 and displacement sensors 14. The jacks 15 support the culvert bottom plate and the support frame 29, and lift the support frame 29 to adjust the height of the template system 22. Multiple displacement sensors 14 are arranged at the lower end of the support frame 29, both horizontally and vertically. The displacement sensors 14 are used to determine the rising height and speed of the support frame 29.

[0034] The guiding system 28 is located below the side formwork 21, and the support system 23 is supported on the surface layer 2. The guiding system 28 includes a bracket 27 and guide wheels 16. The bracket 27 is connected to both ends of the support frame 29 in the transverse X direction, and the guide wheels 16 are rotatably mounted at the ends of the brackets 27 that are far apart from each other in the transverse X direction. The guiding system 28 has multiple guide wheels spaced apart along the longitudinal Y direction of the template system 22. The guide wheels 16 are located below the side formwork 21. The guide wheels 16 can be connected to the bracket 27 by screws to adjust according to the width of the inner wall of the lower end of the box culvert.

[0035] An adjusting member 26 connects the formwork support system 23 and the template system 22. For example... Figure 5 , Figure 6 As shown, the adjusting component 26 includes a lifting lug plate 17 welded to the side mold 21, a sleeve 18 connected to the lifting lug plate 17, and a lead screw 19 threadedly connected to the sleeve 18. A connecting frame 30 is fitted onto the upright 9, and the lead screw 19 passes through the connecting frame 30, and the lead screw 19 is rotatably connected to the connecting frame 30. A driving end 20 is installed at the end of the lead screw 19 away from the sleeve 18. In this embodiment, the driving end 20 is a crank handle. Rotating the crank handle enables the side mold 21 to contract and expand.

[0036] The construction method of the box culvert formwork system provided by this utility model includes the following steps:

[0037] S1, the traveling wheel 13 travels along the slide rail 12, causing the box culvert formwork system to move. At this time, the guide wheel 16 rolls into contact with the inner wall of the lower end of the box culvert, assisting in movement. This continues until the system stops at the location to be poured.

[0038] S2, place jack 15 between support frame 29 and box culvert bottom plate. Lift jack 15 to raise formwork system 23, thereby raising surface layer 2 to the predetermined elevation;

[0039] S3, adjust the bottom support 11 to extend so that it contacts the bottom plate of the box culvert;

[0040] S4, remove jack 15;

[0041] S5, the hand-cranked drive end 20 expands and stretches the side mold 21 to the predetermined position, so that the support system 23 forms a supported state;

[0042] S6, pour concrete until the formwork removal conditions are met;

[0043] S7, demold the formwork system 22, and use the hand-cranked drive end 20 to keep the side formwork 21 at a distance from the finished concrete;

[0044] S8, place jack 15 between support frame 29 and box culvert bottom plate. Lift jack 15 to raise formwork system 23, so that bottom support 11 is off the ground, retract bottom support 11, lower jack 15 until traveling wheel 13 returns to slide rail 12;

[0045] S9, remove jack 15; repeat step S1, move to the next section to be poured;

[0046] Repeat the above steps until all pouring in the project is completed.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A box culvert formwork system, comprising a formwork system (22), a support formwork system (23) supported within the formwork system (22), and a walking system (24) connected to the lower end of the support formwork system (23), characterized in that, The formwork system (23) is provided with a guide system (28) for rolling contact with the inner wall of the lower end of the box culvert. The guide system (28) includes a bracket (27) and a guide wheel (16). The bracket (27) is connected to both ends of the formwork system (23) in the transverse X direction. The guide wheel (16) is rotatably set at the ends of the brackets (27) at both ends of the transverse X direction that are far apart from each other. Multiple guide systems (28) are arranged at intervals along the longitudinal Y direction of the formwork system (22).

2. The box culvert formwork system according to claim 1, characterized in that, It also includes a support lifting system (25) for adjusting the height of the formwork system (22), the support lifting system (25) being located at the bottom of the formwork system (23).

3. The box culvert formwork system according to claim 1, characterized in that, An adjusting component (26) is connected between the formwork support system (23) and the template system (22). The adjusting component (26) includes a lifting lug plate (17) connected to the template system (22), a sleeve (18) connected to the lifting lug plate (17), and a screw rod (19) threadedly connected to the sleeve (18). The screw rod (19) is rotatably mounted on the formwork support system (23), and a drive end (20) is installed at the end of the screw rod (19) away from the sleeve (18).

4. The box culvert formwork system according to claim 1, characterized in that, The template system (22) includes a surface layer (2) and side molds (21) hinged to the two ends of the surface layer (2) in the lateral direction X by hinge seats (1). The guide system (28) is located below the side molds (21), and the support system (23) is supported on the surface layer (2).

5. The box culvert formwork system according to claim 4, characterized in that, The lower surface of the surface layer (2) is provided with secondary ribs (3) extending in the transverse direction X and main ribs (4) extending in the longitudinal direction. There are multiple secondary ribs (3) and main ribs (4) connected in an alternating manner. The formwork support system (23) includes uprights (9). The upper end of the uprights (9) is provided with a top support (6) adapted to the main ribs (4). The lower end of the uprights (9) is provided with a bottom support (11). Both the top support (6) and the bottom support (11) can extend and retract along the axial direction of the uprights (9). The guide system (28) is connected between the side mold (21) and the uprights (9).

6. The box culvert formwork system according to any one of claims 1-5, characterized in that, The formwork system (23) includes a square column-shaped support frame (29), and the walking system (24) is connected to the lower end of the support frame (29). The top of the support frame (29) is provided with a top scissor brace (5), the bottom of the support frame (29) is provided with a bottom scissor brace (10), the longitudinal Y side of the support frame (29) is provided with a longitudinal scissor brace (8), and the transverse X side of the support frame (29) is provided with a transverse scissor brace (7).

7. The box culvert formwork system according to any one of claims 1-5, characterized in that, The walking system (24) includes a slide rail (12) for mounting on the bottom plate of the box culvert and a walking wheel (13) adapted to the slide rail (12), the walking wheel (13) being installed at the bottom of the formwork system (23).

8. The box culvert formwork system according to any one of claims 1-5, characterized in that, The bottom of the formwork system (23) is equipped with a displacement sensor (14).

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