Tunnel center ditch cover plate bottom die support pushing system

Abstract

The application relates to the technical field of a support and an edge formwork plugging system for pouring concrete on a roof plate of a central water ditch of a tunnel, and discloses a tunnel central water ditch cover plate bottom formwork support pushing-up system, which comprises a bottom formwork, an edge formwork pushing-up system, a pushing system, a rotating ring, a traction ring and a bent corner rail, a support is welded on the bent corner rail, an angle steel is welded at the top of the support, the front end of the bent corner rail is welded with the traction ring, horizontal clamping teeth are welded on a transverse support beam, rotating clamping teeth are fixedly installed on the surface of a rotating rod, a suspension plate is arranged at the top of the rotating rod, a jacking rod connected with the rotating ring is sleeved on the rotating rod, the front end of the jacking rod is connected with an edge formwork plate through a connecting rod, a support point steel plate pad for supporting the bottom formwork is welded at the top of the jacking rod, the edge of the bottom formwork is matched with the inner edge of the edge formwork plate in a bevel butt joint, clamping columns are welded on the outer edge of the edge formwork plate, rubber plugs with clamping grooves are installed, and a steel plate of the bottom formwork is installed, so that the application has the characteristics of simple structure, low cost and safety and reliability.

Description

Technical Field

[0001] This invention relates to the technical field of supports and side formwork sealing systems for concrete pouring of the top slab of a tunnel central drainage ditch, specifically a pushing system for the bottom formwork support of a tunnel central drainage ditch cover slab. Background Technology

[0002] Currently, to improve the tightness between the tunnel center drainage ditch cover and the sidewall, cast-in-place construction is commonly used, often employing temporary scaffolding. This requires disassembling and reassembling 30% of the components each time, consuming significant labor and materials. Poor contact between the cover's bottom formwork and the sidewall can easily lead to grout leakage, causing potential quality issues. Sometimes, long strips of geotextile or waterproof membrane are used to plug the leaks, but these are difficult to remove and waste materials. Furthermore, workers face low efficiency and significant safety hazards in the confined space.

[0003] Conversely, using the tunnel center ditch top formwork push support system reduces labor and improves work efficiency; it prevents grout leakage at the bottom formwork corners, ensuring concrete quality; the overall pushing reduces material usage; and workers only need to work on the periphery, eliminating unnecessary safety hazards. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a tunnel central drainage ditch cover bottom formwork support pushing system. By assembling and improving commonly used components, an integral support template for confined spaces is created, solving the problems existing in the background technology mentioned above. This effectively improves the construction speed of the central drainage ditch, reduces the amount of manual labor, shortens the reinforcement time, improves work efficiency, standardizes the construction of drainage ditch cover, reduces construction costs through technical measures, and enhances the effect of civilized construction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bottom formwork support pushing system for a tunnel center drainage ditch cover, comprising a bottom formwork, a side formwork pushing system, a pushing system, a rotating ring, a traction ring, and a curved rail; the side formwork pushing system comprises a side template, a connecting rod, a locking column, a rubber plug, a top seat, and a pushing rod; the pushing system comprises a support beam, a rotating handle, a rotating rod, horizontal locking teeth, rotating locking teeth, and a suspension plate.

[0006] A bracket is welded onto the curved rail, and a 100mm angle steel is welded to the top of the bracket. A traction ring is welded to the front end of the curved rail. A horizontal locking tooth is welded onto the transverse support beam. The crank handle is fixedly installed at the end of the rotating rod. The rotating locking tooth is fixedly installed on the surface of the rotating rod, and the positions of the rotating locking tooth and the horizontal locking tooth correspond. A 2mm thick suspension plate is provided at the top of the rotating rod. A push rod connected to the rotating ring is fitted onto the rotating rod. A triangular wedge block top seat is welded to the bottom of the push rod. The front end of the push rod is connected to the side template through a connecting rod. A support point steel plate pad for supporting the bottom mold is welded to the top of the push rod. The side of the bottom mold and the inner side of the side template are made into a beveled joint with matching dimensions. A locking post is welded to the outer side of the side template, and a rubber plug with a locking groove is installed, and the steel plate of the bottom mold is installed.

[0007] As a further embodiment of the present invention: the side mold pushing system also includes a sliding base and a top seat. The sliding base and the top seat form a sliding pad. The sliding pad is used to lift and lower the side mold. The side mold pushing system 2 lifts and lowers the mold by means of wedge-shaped pads. The corner bevels fit together, and the rubber plug 24 provides a tight seal due to its softness and elasticity.

[0008] As a further embodiment of the present invention: the edge template is used to seal the gap at the edge of the bottom formwork; the connecting rod connects the edge template and the support; the clamping column is used to fix the rubber plug on the edge template; the rubber plug seals the gap between the concrete wall and the edge template; the jacking rod is used to transmit horizontal pushing force; the lifting of the bottom formwork 1 is consistent with the outward movement and lifting of the edge template 21; while the bottom formwork 1 is lifted, the template at the gap of the edge template 21 is also lifted and moved outward; by calculating the horizontal distance and the lifting height, the length of the rod and the height of the pad are determined, so that the template at the gap is accurately aligned by the oblique angle.

[0009] As a further embodiment of the present invention: the rotating ring is fitted onto the rotating rod, and the rotating ring is connected to the push rod.

[0010] As a further embodiment of the present invention: the support beam is used to support the bottom formwork, the bottom formwork is used to support the reinforcing steel and concrete wall, and is used to transfer gravity to the support, the support is used to transfer vertical loads.

[0011] As a further embodiment of the present invention: the pushing system further includes a spring and a fixing bolt. The rotating rod is connected to the suspension plate through the spring and the fixing bolt. The pushing system 3 uses the meshing force between the horizontal cleat 34 on the rotating rod 33 and the rotating caliper 35 (referred to as the meshing force between gears) to generate thrust. The suspension plate 36 fixes the rotating caliper 35 and the horizontal caliper 34 of the rotating rod 33 in a moderately meshed state to ensure stable rotation and pushing.

[0012] As a further embodiment of the present invention: the curved rail is formed by pressing the front end of a steel pipe with a diameter of 42mm.

[0013] As a further embodiment of the present invention: a bottom mold base is installed between the bottom mold and the support beam.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The formwork support has the characteristics of simple structure, easy use, strong operability for workers and high construction efficiency.

[0016] (2) The materials are commonly used materials that can be used repeatedly after a one-time investment, and have the characteristics of low cost.

[0017] (3) Workers can work in a spacious workspace, which is safe and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the tunnel center ditch top slab pushing support system of the present invention;

[0019] Figure 2 This is a schematic diagram of the side mold pushing system in this invention;

[0020] Figure 3 This is a schematic diagram of the side-mode driven thrust system in this invention.

[0021] In the diagram: 1-bottom formwork, 11-support, 2-side formwork pushing system, 21-side template, 22-connecting rod, 23-clamping column, 24-rubber plug, 25-pushing base, 26-top seat, 27-pushing rod, 3-pushing system, 31-support beam, 32-handle, 33-rotating rod, 34-horizontal clamping tooth, 35-rotating clamping tooth, 36-suspended plate, 37-spring, 38-fixing bolt, 4-rotating ring, 5-traction ring, 6-curved rail, 7-ditch bottom plate, 8-concrete wall, 9-bottom formwork base, 10-top seat. Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1-3As shown, the present invention provides a technical solution: a bottom formwork support pushing system for a tunnel center drainage ditch cover, comprising a bottom formwork 1, a side formwork pushing system 2, a pushing system 3, a rotating ring 4, a traction ring 5, and a curved rail 6. The side formwork pushing system 2 includes a side template 21, a connecting rod 22, a locking post 23, a rubber plug 24, a top seat 26, and a pushing rod 27. The pushing system 3 includes a support beam 31, a rotating handle 32, a rotating rod 33, horizontal locking teeth 34, rotating locking teeth 35, and a suspension plate 36. The support beam 31 serves as the support base for the entire system; the rotating handle 35 is used for manual rotation to make the rotating rod 33 roll; the horizontal locking teeth 34 are the locking points for the rotating caliper 35 to move forward; the rotating caliper 35 and the horizontal locking teeth 34 engage to form a pushing force; the suspension plate 36 presses down on the rotating rod 33 to prevent the horizontal locking teeth 34 and the rotating caliper 35 from disengaging.

[0024] A bracket 11 is welded onto the curved rail 6. A 100mm angle steel is welded to the top of the bracket 11. A traction ring 5 is welded to the front end of the curved rail 6. A horizontal locking tooth 34 is welded onto the transverse support beam 31. The crank handle 32 is fixedly installed at the end of the rotating rod 33. The rotating locking tooth 35 is fixedly installed on the surface of the rotating rod 33, and the positions of the rotating locking tooth 35 and the horizontal locking tooth 34 correspond. A 2mm thick suspension plate 36 is provided at the top of the rotating rod 33. A push rod 27 connected to the rotating ring 4 is fitted onto the rotating rod 33. A triangular part is welded to the bottom of the push rod 27. The wedge-shaped block top seat 10 and the front end of the push rod 27 are connected to the side template 21 via the connecting rod 22. The top of the push rod 27 is welded with a support point steel plate pad for supporting the bottom mold 1. The side of the bottom mold 1 and the inner side of the side template 21 are made into a beveled joint with matching dimensions. The outer side of the side template 21 is welded with a locking post 23 and a rubber plug 24 with a locking groove is installed. The steel plate of the bottom mold 1 is also installed. The materials are common materials that can be used repeatedly after one-time investment, which has the characteristics of low cost. Moreover, workers can work in a spacious working space, which has the characteristics of safety and reliability.

[0025] Furthermore, the side formwork pushing system 2 also includes a sliding base 25 and a top seat 26. The sliding base 25 and the top seat 26 form a sliding pad, which is used to lift and lower the side formwork 21. The side formwork pushing system 2 uses wedge-shaped pads to lift and lower the formwork, and utilizes the beveled edges of the edges to fit together. The rubber plug 24 provides a tight seal due to its softness and elasticity. The formwork support has the characteristics of simple structure, convenient use, strong worker operability, and high construction efficiency.

[0026] Furthermore, the edge template 21 is used to seal the gap at the edge of the bottom formwork 1, the connecting rod 22 connects the edge template 21 and the bracket 11, the clamping post 23 is used to fix the rubber plug 24 on the edge template 21, the rubber plug 24 seals the gap between the concrete wall 8 and the edge template 21, the jacking rod 27 is used to transmit horizontal pushing force, the lifting of the bottom formwork 1 is consistent with the outward lifting of the edge template 21, while the bottom formwork 1 is lifted, the template at the gap of the edge template 21 is also lifted and moved outward. By calculating the horizontal distance and the lifting height, the length of the rod and the height of the pad are determined, so that the template at the gap is accurately aligned by the oblique angle.

[0027] Furthermore, the rotating ring 4 is fitted onto the rotating rod 33, and the rotating ring 4 is connected to the push rod 27. The push rod 27 transmits the horizontal force that pushes forward from the rotating rod 33 to the side mold pushing system 2.

[0028] Furthermore, the support beam 31 is used to support the structure of the bottom formwork 1, which is used to support the reinforcing steel and concrete wall 8, and to transfer gravity to the bracket 11, which can transfer vertical loads and assemble the main components of the structure.

[0029] Furthermore, the pushing system 3 also includes a spring 37 and a fixing bolt 38. The rotating rod 33 is connected to the suspension plate 36 through the spring 37 and the fixing bolt 38. The spring 37 and the fixing bolt 38 enable the suspension plate 36 to press down on the rotating rod 33 without generating significant resistance. The pushing system 3 utilizes the meshing force between the horizontal cleat 34 on the rotating rod 33 and the rotating caliper 35 (referred to as the meshing force between gears) to generate thrust. The rotating caliper 35 and the horizontal caliper 34 of the rotating rod 33 are appropriately meshed on the suspension plate 36 to ensure stable rotation and pushing.

[0030] Furthermore, the traction ring 5 serves as the traction point for the overall support formwork to move forward. When the overall support formwork slides on the concrete surface, the curved rail 6 can prevent the bottom plate from being locally protruded and obstructed.

[0031] Furthermore, a bottom mold base 9 is installed between the bottom mold 1 and the support beam 31.

[0032] The assembly process of this invention is as follows: First, the front end of a 42mm diameter steel pipe is pressed into a curved rail 6. Then, a bracket 11 is welded onto the curved rail 6. Next, a 100mm angle steel is welded to the top of the bracket 11. Then, a traction ring 5 made of bent steel bars is welded to the front end of the curved rail 6. Immediately afterward, a pushing system 3 is installed on the transverse support beam 31. Before installing the pushing system 3, the horizontal locking teeth 34 are welded. Then, the pre-prepared rotating rod 33, rotating locking teeth 35, and crank handle 32 are assembled. During assembly, the rotating locking teeth 35 are aligned with the designed position of the horizontal locking teeth 34. Immediately afterward, the top fixing frame is welded, and a top of the rotating rod 33 is placed... A 2mm thick suspension plate 36 is placed and fixed to the frame with fixing bolts 38 and springs 37. Then, a push rod 27 connected to a rotating ring 4 is fitted onto the rotating rod 33, and a triangular wedge block top seat 10 is welded to the bottom of the push rod 27. The front end is connected to the side template 21 with a connecting rod 22. A support point steel plate pad for supporting the bottom mold 1 is welded to the top of the push rod 27. The side of the bottom mold 1 and the inner side of the side template 21 are made into a beveled joint with matching dimensions. Next, a locking post 23 is welded to the outer side of the side template 21, and a rubber plug 24 with a locking groove is installed. Finally, the steel plate of the bottom mold 1 is installed. The steel plate needs to be 5mm thick.

[0033] Working principle: After the bottom slab 7 of the tunnel center ditch and the concrete wall 8 are poured, and the overall support formwork of the cover plate is assembled, the crank handle 32 is manually turned at the end to rotate the rotating rod 33 and move it to the side. Then, the push rod 27 is pushed to move and rise, so that the bottom formwork 1 of the cover plate reaches the design elevation. The side formwork 21 is embedded in the side seam, the rubber plug 24 is sealed tightly with the concrete surface, the rotating rod 33 is locked, the reinforcing steel is tied and installed, the concrete is poured and the surface is finished. After the concrete reaches a certain strength, the crank handle 32 is rotated in the opposite direction to make the bottom formwork 1 and the side formwork 21 fall off. The traction ring 5 of the support 11 is pulled forward by the excavator and moved to the next cycle position for fixing. The above steps are repeated for construction.

[0034] In summary, this invention mainly utilizes simple principles such as rolling gears, rotating sleeves, wedge lifting, and rubber deformation to form a structure for adjusting the support and template. It primarily addresses issues such as the inconvenience of installing and dismantling the support due to the small cross-sectional size of the central drainage ditch, low efficiency, difficulty in sealing the bottom plate of the mold with the side wall concrete surface, severe grout leakage, difficulty in demolding after concrete pouring, and sinking of the bottom mold during pouring.

[0035] This support formwork system can ensure the clearance of the drainage ditch by assembling the standardized overall support and then moving it as a whole; the rubber clamps on the sides can ensure a seal with the side wall concrete and form a sufficiently strong bottom support; the traction rail can both provide support and reduce the resistance area during sliding.

[0036] The use of a central drainage ditch top formwork pusher can effectively save labor time, eliminate the need for repeated installation and dismantling of supports, improve the overall quality of the top slab concrete, and reduce construction costs. This system has broad application value in the construction of central drainage ditches in extra-long tunnels.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bottom formwork support pushing system for a tunnel center drainage ditch cover, comprising a bottom formwork (1), a side formwork pushing system (2), a pushing system (3), a rotating ring (4), a traction ring (5), and a curved rail (6), characterized in that, The side mold pushing system (2) includes a side template (21), a connecting rod (22), a locking post (23), a rubber plug (24), a top seat (26), and a pushing rod (27). The pushing system (3) includes a support beam (31), a crank (32), a rotating rod (33), a horizontal locking tooth (34), a rotating locking tooth (35), and a suspension plate (36). A bracket (11) is welded onto the curved rail (6), and a 100mm angle steel is welded to the top of the bracket (11). A traction ring (5) is welded to the front end of the curved rail (6). A horizontal locking tooth (34) is welded onto the support beam (31). The crank handle (32) is fixedly installed at the end of the rotating rod (33). The rotating locking tooth (35) is fixedly installed on the surface of the rotating rod (33). The rotating locking tooth (35) corresponds to the horizontal locking tooth (34). A 2mm thick suspension plate (36) is provided on the top of the rotating rod (33). A top push rod (27) connected to a rotating ring (4) is fitted onto the top push rod (27). A top seat (26) is welded to the bottom of the top push rod (27). The front end of the top push rod (27) is connected to the side template (21) through a connecting rod (22). A support point steel plate pad for supporting the bottom mold (1) is welded to the top of the top push rod (27). The side of the bottom mold (1) and the inner side of the side template (21) are made into a beveled joint with matching dimensions. A locking post (23) is welded to the outer side of the side template (21), and a rubber plug (24) with a locking groove is installed. The steel plate of the bottom mold (1) is also installed. The side mold pushing system (2) also includes a sliding base (25) and a top seat (26). The sliding base (25) and the top seat (26) form a sliding pad, which is used to lift and lower the side mold (21).

2. The tunnel center drainage ditch cover bottom formwork support pushing system according to claim 1, characterized in that, The side template (21) is used to seal the gaps at the edges of the bottom formwork (1). The connecting rod (22) connects the side template (21) and the push rod (27). The clamping post (23) is used to fix the rubber plug (24) on the side template (21). The rubber plug (24) seals the gap between the concrete wall (8) and the side template (21). The push rod (27) is used to transmit horizontal pushing force.

3. The tunnel center ditch cover bottom formwork support pushing system according to claim 2, characterized in that, The rotating ring (4) is fitted onto the rotating rod (33), and the rotating ring (4) is connected to the push rod (27).

4. The tunnel center ditch cover bottom formwork support pushing system according to claim 3, characterized in that, The support beam (31) is used to support the bottom formwork (1), the bottom formwork (1) is used to support the reinforcing steel and concrete wall (8), and is used to transfer gravity to the support (11), the support (11) is used to transfer vertical loads.

5. The tunnel center drainage ditch cover bottom formwork support pushing system according to claim 1, characterized in that, The propulsion system (3) also includes a spring (37) and a fixing bolt (38), and the rotating rod (33) is connected to the suspension plate (36) through the spring (37) and the fixing bolt (38).

6. The tunnel center drainage ditch cover bottom formwork support pushing system according to claim 1, characterized in that, The curved rail (6) is formed by pressing the front end of a steel pipe with a diameter of 42mm.

7. The tunnel center drainage ditch cover bottom formwork support pushing system according to claim 1, characterized in that, A bottom mold base (9) is installed between the bottom mold (1) and the support beam (31).

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