Forming die special for high-strength precast beam plate

Abstract

The invention discloses a high-strength precast beam plate special forming mold which comprises a base, a bottom mold plate is fixedly connected to the center of the top face of the base, a core mold is arranged in the center of the top face of the bottom mold plate, the two sides of the bottom mold plate are each movably connected with a side mold plate, and the two side mold plates are both movably connected to the top face of the base. The top faces of the two side formworks are jointly connected with a top formwork, the two sides of the base are each provided with a locking piece, and the two locking pieces are connected with the two side formworks.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated moulds, in particular to a special forming mould for high-strength prefabricated beams and slabs. Background Art

[0002] Reinforced concrete box girders, as a key bridge structure, play a vital role in modern bridge engineering. They can be categorized into precast and cast-in-place box girders, depending on the concrete pouring method. The internal formwork design of precast box girders is primarily to ensure that they meet the geometric dimensional requirements specified on the design drawings. These formworks are often carefully crafted from a variety of materials. They must not only possess sufficient strength and rigidity to withstand the dead load generated by the concrete during the hardening process, known as the dead load, but also be able to support the weight of small construction machinery and workers. Precast box girders are prefabricated at a separate site, enabling a more organized and efficient construction process. After the bridge's substructure is completed, the precast box girders are hoisted into place. This construction method effectively reduces on-site construction complexity and interference, significantly improving the overall project schedule. Due to these advantages, precast box girders have been widely used in bridge construction, speeding up construction and saving valuable time resources.

[0003] A search revealed a Chinese patent document that discloses a beam-slab forming mold [Application No. 202122857175.2; Publication No. CN 216442756U]. Existing precast beam forming molds typically use steel nails to secure the formwork, creating a hollow mold. However, the biggest problem with these nails is that once the precast beam is formed, they adhere to the inner wall of the formwork, making it difficult to remove. Furthermore, removing the nails is time-consuming and labor-intensive, causing significant inconvenience for workers. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a special forming mold for high-strength prefabricated beams and slabs.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a special forming mold for high-strength prefabricated beams and slabs, comprising a base, a bottom template fixedly connected to the center of the top surface of the base, a core mold provided at the center of the top surface of the bottom template, a side template movably connected to each side of the bottom template, both side templates are movably connected to the top surface of the base, the top surfaces of the two side templates are commonly connected to a top template, a locking piece is provided on each side of the base, and both locking pieces are connected to the two side templates.

[0006] The top surface of the bottom template is vertically provided with a plurality of equally spaced blind holes, each of the blind holes is movably plugged with a permanent magnet block, the permanent magnet block is fixed to the bottom surface of the core mold, and the bottom template is made of metal.

[0007] A through groove is provided on the outer side of each of the two side templates, and the through groove is lower than the top surface of the bottom template. A screw sleeve and a guide sleeve are movably connected in the two through grooves on the outer side of each side template. A threaded rod is threaded through the inner thread of the screw sleeve, one end of the threaded rod is rotatably connected to the side surface of the bottom template, and the other end is transmission-connected to a rotating motor, and the rotating motor is horizontally fixed on the top surface of the base. A guide rod is axially slidably connected in the guide sleeve, one end of the guide rod is horizontally fixed to the side surface of the bottom template, and the other end is fixed to a support seat, and the support seat is fixed to the top surface of the base.

[0008] Two mirror-symmetrical guide grooves are horizontally opened on the outer side of each screw sleeve and the guide sleeve, and a guide block is slidably connected in each guide groove. The guide block is fixed on the inner wall of the through groove, and a compressed spring is fixed between each guide groove and the guide block.

[0009] The locking member includes a support block fixed to the front side of the base, a threaded groove is horizontally provided on each side of the support block, a threaded block is threadedly connected in each threaded groove, an adjusting rod is concentrically fixed on the side of each threaded block, the outer edge of each adjusting rod is movably connected to a support plate, and each side template is fixedly connected to a support plate.

[0010] Two mirror-symmetrical positioning grooves are vertically formed on the top surfaces of the two side templates. A positioning pin is movably inserted into each positioning groove, and each positioning pin is vertically fixed to the bottom surface of the top template.

[0011] A cavity is provided in the base, the cavity is located below the core mold, and a plurality of vibration motors are provided inside the cavity.

[0012] Compared with the existing technology, this special forming mold for high-strength prefabricated beams and slabs has the following advantages: In the present invention, two mirror-symmetrical side templates are movably connected on the top surface of the base, and the guide sleeves and screw sleeves are telescopically connected in the through grooves of the two side templates, so that the prefabricated beam slab in the mold can be quickly opened. There is no need to remove multiple steel nails and then take the prefabricated beam slab out of the mold, thereby improving the convenience of opening the mold and the production efficiency of the prefabricated beam slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2It is a main cross-sectional view of the overall structure of the present invention; Figure 3 for Figure 1 A magnified view of the structure at point A; Figure 4 This is a main cross-sectional view of the connection between the side template and the screw sleeve of the present invention; Figure 5 It is a top cross-sectional view of the connection between the side formwork and the screw sleeve of the present invention; Figure 6 This is a main cross-sectional view of the connection between the support plate and the support block of the present invention.

[0014] In the figure, 1. base; 2. threaded rod; 3. side template; 4. support plate; 5. adjusting rod; 6. support block; 7. threaded groove; 8. rotating motor; 9. support seat; 10. guide rod; 11. top template; 12. core mold; 13. positioning pin; 14. positioning groove; 15. cavity; 16. vibration motor; 17. blind hole; 18. permanent magnet block; 19. bottom template; 20. through groove; 21. screw sleeve; 22. guide block; 23. guide groove; 24. spring; 25. threaded block. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0016] Reference Figure 1-6 , This high-strength prefabricated beam and slab special forming mold includes a base 1, a cavity 15 is provided in the base 1, the cavity 15 is located below the core mold 12, and a plurality of vibration motors 16 are provided inside the cavity 15. A bottom template 19 is fixedly connected to the center of the top surface of the base 1, and a core mold 12 is provided at the center of the top surface of the bottom template 19. A side template 3 is movably connected to each side of the bottom template 19, and the two side templates 3 are movably connected to the top surface of the base 1. The top surfaces of the two side templates 3 are jointly connected to a top template 11. Two mirror-symmetrical positioning grooves 14 are vertically provided on the top surfaces of the two side templates 3, and a positioning pin 13 is movably inserted in each positioning groove 14. Each positioning pin 13 is vertically fixed to the bottom surface of the top template 11. A locking piece is provided on each side of the base 1, and the two locking pieces are connected to the two side templates 3; A through slot 20 is provided on the outside of each of the two side templates 3. The through slot 20 is lower than the top surface of the bottom template 19. The two through slots 20 on the outside of each side template 3 are movably connected to a screw sleeve 21 and a guide sleeve. The threads of the two screw sleeves 21 are rotated in opposite directions. A threaded rod 2 is threaded through the inner thread of the screw sleeve 21. One end of the threaded rod 2 is rotatably connected to the side of the bottom template 19, and the other end is connected to a rotating motor 8. The rotating motor 8 is horizontally fixed to the top surface of the base 1. A guide rod 10 is axially slidably connected in the guide sleeve. One end of the guide rod 10 is horizontally fixed to the side of the bottom template 19, and the other end is fixed. A support seat 9 is fixed to the top surface of the base 1. Two mirror-symmetrical guide grooves 23 are horizontally provided on the outer side of each screw sleeve 21 and the guide sleeve. A guide block 22 is slidably connected in each guide groove 23. The guide block 22 is fixed to the inner wall of the through groove 20. A compressed spring 24 is fixed between each guide groove 23 and the guide block 22. A plurality of equally spaced blind holes 17 are vertically provided on the top surface of the bottom template 19. A permanent magnet block 18 is movably inserted in each blind hole 17. The permanent magnet block 18 is fixed to the bottom surface of the core mold 12. The bottom template 19 is made of metal. In order to fix the side formwork 3 when in use, the locking part includes a support block 6 fixed to the front side of the base 1, and a threaded groove 7 is horizontally opened on both sides of the support block 6. A threaded block 25 is threadedly connected in each threaded groove 7, and an adjusting rod 5 is concentrically fixed on the side of each threaded block 25. The outer edge of each adjusting rod 5 is movably connected to a support plate 4, and a support plate 4 is fixedly connected to both sides of each side formwork 3.

[0017] By movably connecting two mirror-symmetrical side templates 3 on the top surface of the base 1, and telescopically connecting the guide sleeve and the screw sleeve 21 in the through groove 20 of the two side templates 3, it is convenient to quickly open the mold of the prefabricated beam plate in the mold. There is no need to remove multiple steel nails and then take the prefabricated beam plate out of the mold, thereby improving the convenience of opening the mold and the production efficiency of the prefabricated beam plate.

[0018] Working principle: When in use, the rotating motor 8 drives the threaded rod 2 to rotate, the threaded rod 2 drives the screw sleeve 21 to move axially, and the screw sleeve 21 drives the side template 3 to move relatively, so that the side template 3 is molded until the screw sleeve 21 moves to the extreme position, and the threaded hole abuts the entrance of the thread groove 7. At this time, there is still a gap between the two side templates 3, and then the adjusting rod 5 is rotated. The adjusting rod 5 drives the thread block 25 to rotate, and the thread block 25 moves toward the thread groove 7, and at the same time drives the two support plates 4 to move relative to each other, so that the two side templates 3 are completely merged, and the spring 24 is compressed, and then the concrete is poured into the mold. , close the top template 11 and then start the vibration motor 16 to vibrate the concrete in the mold, shake out the bubbles in the concrete, and make the concrete flow to every part of the mold, so that the concrete is more evenly distributed in the mold. After the concrete solidifies, remove the top template 11, then rotate the adjusting rod 5 to move the threaded hole out of the thread groove 7, and the support plate 4 moves in the opposite direction with the side template 3. At the same time, the spring 24 is reset, so that the two side templates 3 are initially separated, and then the rotating motor 8 drives the threaded rod 2 to rotate in the opposite direction, so that the two side templates 3 are finally opened, and then the solidified precast beam slab can be taken out of the mold.

[0019] The above components are all common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A special forming mold for high-strength prefabricated beams and slabs, comprising a base (1), characterized in that: A bottom mold plate (19) is fixedly connected to the center of the top surface of the base (1), and a core mold (12) is provided at the center of the top surface of the bottom mold plate (19). A side mold plate (3) is movably connected to each of the two sides of the bottom mold plate (19), and the two side mold plates (3) are movably connected to the top surface of the base (1), and the top surfaces of the two side mold plates (3) are commonly connected to a top mold plate (11). A locking piece is provided on each of the two sides of the base (1), and the two locking pieces are connected to the two side mold plates (3).

2. A special forming mold for high-strength prefabricated beams and slabs according to claim 1, characterized in that: The top surface of the bottom mold plate (19) is vertically provided with a plurality of equally spaced blind holes (17), each of the blind holes (17) having a permanent magnet block (18) movably inserted therein, the permanent magnet block (18) being fixed to the bottom surface of the core mold (12), and the bottom mold plate (19) being made of metal.

3. The special forming mold for high-strength prefabricated beams and slabs according to claim 1, characterized in that: A through groove (20) is respectively formed on the outer side of the two side templates (3), and the through groove (20) is lower than the top surface of the bottom template (19). A screw sleeve (21) and a guide sleeve are movably connected in the two through grooves (20) on the outer side of each side template (3). A threaded rod (2) is threadedly connected to the inner thread of the screw sleeve (21). One end of the threaded rod (2) is rotatably connected to the side surface of the bottom template (19), and the other end is transmission-connected to a rotating motor (8). The rotating motor (8) is horizontally fixed to the top surface of the base (1). A guide rod (10) is axially slidably connected in the guide sleeve. One end of the guide rod (10) is horizontally fixed to the side surface of the bottom template (19), and the other end is fixed to a support seat (9). The support seat (9) is fixed to the top surface of the base (1).

4. A special forming die for high-strength prefabricated beams and slabs according to claim 3, characterized in that: Two mirror-symmetrical guide grooves (23) are horizontally formed on the outer sides of each of the screw sleeves (21) and the guide sleeves. A guide block (22) is slidably connected in each of the guide grooves (23). The guide block (22) is fixed to the inner wall of the through groove (20). A spring (24) in a compressed state is fixed between each of the guide grooves (23) and the guide block (22).

5. The special forming mold for high-strength prefabricated beam and slab according to claim 1, characterized in that: The locking member comprises a support block (6) fixed to the front side of the base (1), a thread groove (7) being horizontally provided on both sides of the support block (6), each threadedly connected to a thread block (25) in each threaded groove (7), an adjusting rod (5) being concentrically fixed to the side surface of each thread block (25), an outer edge of each adjusting rod (5) being movably connected to a support plate (4), and each side surface of each side template (3) being fixedly connected to a support plate (4).

6. The special forming mold for high-strength prefabricated beam and slab according to claim 1, characterized in that: Two mirror-symmetrical positioning grooves (14) are vertically formed on the top surfaces of the two side mold plates (3), a positioning pin (13) is movably inserted into each positioning groove (14), and each positioning pin (13) is vertically fixed to the bottom surface of the top mold plate (11).

7. The special forming mold for high-strength prefabricated beam and slab according to claim 1, characterized in that: A cavity (15) is provided in the base (1), the cavity (15) is located below the core mold (12), and a plurality of vibration motors (16) are provided inside the cavity (15).

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