Prestressed concrete precast pile manufacturing mold

Abstract

The utility model discloses a prestressed concrete precast pile manufacturing mould, which comprises two fixing seats, an upper mould and a lower mould, a plurality of fixing rings are fixedly arranged at the top ends of the two fixing seats, a first screw rod and two sliding rods are respectively arranged among the plurality of fixing rings, the first screw rod is rotatably connected with the fixing rings, and the two sliding rods are respectively connected with the upper mould and the lower mould. And the sliding rods are fixedly connected with the fixing rings, and a plurality of connecting plates are fixedly installed on the side walls of the lower mold and the upper mold correspondingly. After the reinforcing mesh body is placed on the lower die, the first screw rod is adjusted, so that the blanking pipe at one end of the material injection pipe is arranged at one end in the reinforcing mesh body, then the first screw rod is controlled to rotate, the plurality of movable frames are controlled to move, and the material injection pipe rotates while injecting materials under the meshing action between the first gear and the second gear; and the lower mold and the reinforcing mesh body move towards one end, so that concrete is uniformly injected into the reinforcing mesh body, and the material injection efficiency and uniformity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed concrete precast piles, in particular to a manufacturing mold for prestressed concrete precast piles. Background Art

[0002] Prestressed concrete precast piles (PC piles), as important foundation components in the field of modern civil engineering, are widely favored for their high bearing capacity, good stability, and construction convenience. This type of pile forms a prestressed state after the concrete solidifies by pre-tensioning the internal steel bars, thus significantly enhancing the tensile performance and overall structural strength of the pile body. With the continuous progress of construction technology, prestressed concrete precast piles have gradually replaced traditional pile types and play a key role in projects such as high-rise buildings, bridges, and ports. The core of its technology lies in ensuring that the pile body can maintain excellent mechanical properties under complex geological conditions through precise prestressing technology and high-quality concrete materials.

[0003] As a support and positioning component for bearings, the bearing housing also plays an important role in mechanical equipment. Its technical background is closely related to bearings and aims to provide a stable and reliable installation environment for bearings. The bearing housing usually consists of a housing body, a cover plate, and fasteners, etc. The housing body is internally designed with precise holes and bosses for installing and fixing bearings. According to different application requirements, the bearing housing also has various forms and specifications, such as split bearing housings, integral bearing housings, and bearing housings with adjustment functions, etc. In the manufacturing process, the material selection, machining accuracy, and surface treatment of the bearing housing are all crucial to ensure that it can meet the operating requirements of the equipment and provide sufficient rigidity and stability.

[0004] Patent document CN107020695A discloses a mold for producing concrete prestressed pipe piles, including two semi-cylindrical molds. The opening edges of each semi-cylindrical mold form flanges along its length direction. A number of threaded holes are provided on the flanges. A folding block coaxial with the threaded holes is provided on the flange of the upper semi-cylindrical mold. Bolts are inserted into the threaded holes. The bottom of the bolt head is provided with a right-angled edge coaxial with the bolt. A spring is sleeved on the bolt. The spring is respectively limited to the folding block and the right-angled edge through a limiting piece fixed to the spring. In the present invention, the two semi-cylindrical molds are locked by screwing the bolts into the threaded holes, and a spring is sleeved on the bolts. The lower end of the spring is limited on the flange, and the upper end of the spring is limited below the nut of the bolt. Thus, when screwing in the bolts, the spring will be compressed, and when unscrewing the bolts, when the bolts are almost unscrewed, they will become loose, and the spring will bounce upwards to drive the bolts to pop out of the lower flange.

[0005] As in the prior art of the above-mentioned patent, when the above-mentioned mold is used to make prestressed concrete piles, it is necessary to add a steel mesh to the lower mold and then pour concrete on the steel mesh. However, in actual operation, when pouring concrete above the steel mesh, it is necessary to wait for the concrete to gradually fall under the steel mesh before the lower mold can be completely filled. This process is inefficient and significantly affects the production progress. Moreover, the method of pouring concrete from above may also cause the concrete below to not be filled evenly, resulting in voids or insufficient density, which not only affects the quality of the prestressed concrete piles, but also may reduce its overall structural strength, posing a potential threat to subsequent safety in use. Therefore, these problems in the mold making process need to be solved urgently to ensure the production efficiency and quality of prestressed concrete piles. Utility Model Content

[0006] The utility model aims to provide a prestressed concrete precast pile production mold to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a prestressed concrete precast pile production mold, comprising two fixed seats, an upper mold and a lower mold, a plurality of fixed rings are fixedly installed on the top ends of the two fixed seats, a first screw and two sliding rods are respectively arranged between the plurality of fixed rings, the first screw is rotatably connected to the fixed ring, the sliding rod is fixedly connected to the fixed ring, the side walls of the lower mold and the upper mold are fixedly installed with a plurality of connecting plates, a plurality of moving frames are fixedly installed on the bottom end of the lower mold, the moving frame is threadedly connected to the first screw, and the moving frame is slidably connected to the two sliding rods, a fixed plate is fixedly installed on the side wall of one of the fixed seats, an injection pipe is arranged on the fixed plate, the injection pipe passes through the side wall of the fixed plate and is rotatably connected to the fixed plate, a first gear and a second gear are respectively fixedly installed on the first screw and the injection pipe, the first gear and the second gear are meshed with each other, and one end of the injection pipe extends between the upper mold and the lower mold and is provided with a discharge pipe.

[0008] As a further description of the above technical solution: a plurality of bolts are threadedly installed between the connecting plates arranged on the side walls of the upper mold and the lower mold, and the upper mold and the lower mold are fixedly connected by the bolts.

[0009] As a further description of the above technical solution: a motor is fixedly mounted on the side wall of one of the fixing seats, and the output end of the motor is drivingly connected to the first screw rod.

[0010] As a further description of the above technical solution: a screw pump body is fixedly installed at one end of the injection tube, a conveying screw is rotatably installed inside the injection tube, and the conveying screw is drivingly connected to the screw pump body.

[0011] As a further description of the above technical solution: a feeding hopper is connected and installed at the input end of the screw pump body.

[0012] As a further description of the above technical solution: two liquid injection pipes are connected and installed on the side wall of the moving frame. A threaded through groove is provided on the moving frame. The first screw is threadedly connected to the moving frame through the threaded through groove. A communicating pipe is provided inside the moving frame, and the communicating pipe is communicated with the liquid injection pipe and the threaded through groove.

[0013] The utility model provides a production mold for prestressed concrete precast piles, which has the following beneficial effects: after placing a steel mesh on the lower mold of the utility model, adjust the first screw so that the feeding pipe at one end of the feeding pipe is arranged at one end inside the steel mesh, and then control the rotation of the first screw. While multiple moving frames move, under the meshing action between the first gear and the second gear, the feeding pipe rotates while feeding, and at the same time, the lower mold and the steel mesh move towards one end, realizing uniform injection of concrete into the inside of the steel mesh, increasing the feeding efficiency and uniformity.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall three-dimensional structure diagram of a production mold for prestressed concrete precast piles proposed by the utility model;

[0017] Figure 2 is a three-dimensional structure diagram of another perspective of the utility model;

[0018] Figure 3 is a sectional structure diagram of the feeding pipe and the conveying screw of the utility model;

[0019] Figure 4 is a three-dimensional exploded structure diagram of the upper mold, the lower mold and the steel mesh of the utility model;

[0020] Figure 5 is a sectional structure diagram of the moving frame of the utility model.

[0021] Legend Explanation:

[0022] 1. Fixed seat; 2. Fixed ring; 3. Fixed plate; 4. Motor; 5. First screw; 6. Slide bar; 7. Moving frame; 8. First gear; 9. Second gear; 10. Injection pipe; 11. Hopper; 12. Screw pump body; 13. Lower mold; 14. Connecting plate; 15. Bolt; 16. Upper mold; 17. Reinforcement mesh; 18. Liquid injection pipe; 19. Conveying screw; 20. Feed pipe; 21. Connecting pipe; 22. Threaded through slot. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Referring to Figures 1-5 , a production mold for prestressed concrete precast piles includes two fixed seats 1, an upper mold 16 and a lower mold 13. A plurality of fixed rings 2 are fixedly installed at the top ends of the two fixed seats 1. A first screw 5 and two slide bars 6 are respectively arranged between the plurality of fixed rings 2. The first screw 5 is rotatably connected to the fixed ring 2, and the slide bar 6 is fixedly connected to the fixed ring 2. A plurality of connecting plates 14 are fixedly installed on the side walls of the lower mold 13 and the upper mold 16. A plurality of moving frames 7 are fixedly installed at the bottom end of the lower mold 13. The moving frame 7 is threadedly connected to the first screw 5, and the moving frame 7 is slidably connected to the two slide bars 6. A fixed plate 3 is fixedly installed on the side wall of one of the fixed seats 1. An injection pipe 10 is arranged on the fixed plate 3. The injection pipe 10 penetrates through the side wall of the fixed plate 3 and is rotatably connected to the fixed plate 3. A first gear 8 and a second gear 9 are respectively fixedly installed on the first screw 5 and the injection pipe 10. The first gear 8 meshes with the second gear 9. One end of the injection pipe 10 extends between the upper mold 16 and the lower mold 13 and is provided with a feed pipe 20; after placing the reinforcement mesh 17 on the lower mold 13, the first screw 5 is adjusted so that the feed pipe 20 at one end of the injection pipe 10 is arranged at one end inside the reinforcement mesh 17, and then the first screw 5 is controlled to rotate. While the plurality of moving frames 7 move, under the meshing action between the first gear 8 and the second gear 9, the injection pipe 10 rotates while injecting material, and the lower mold 13 and the reinforcement mesh 17 move towards one end, realizing uniform injection of concrete into the inside of the reinforcement mesh 17, increasing the injection efficiency and uniformity.

[0025] As a preferred technical solution of this embodiment, a plurality of bolts 15 are threadedly installed between the connecting plates 14 provided on the side walls of the upper mold 16 and the lower mold 13, and the upper mold 16 and the lower mold 13 are fixedly connected by the bolts 15; after injecting concrete between the upper mold 16 and the lower mold 13, they are fixed by the bolts 15.

[0026] As a preferred technical solution of this embodiment, a motor 4 is fixedly installed on the side wall of one of the fixed seats 1, and the output end of the motor 4 is in transmission connection with a first screw rod 5; the motor 4 can enable the first screw rod 5 to rotate, providing power for the meshing rotation between the moving lower die 13 and the two gears.

[0027] As a preferred technical solution of this embodiment, a screw pump body 12 is fixedly installed at one end of the injection pipe 10, a conveying screw rod 19 is rotatably installed inside the injection pipe 10, and the conveying screw rod 19 is in transmission connection with the screw pump body 12; the concrete can be pumped through the screw pump body 12 and the conveying screw rod 19. The screw pump body 12 and the conveying screw rod 19 are prior arts, and their function is to stably pump the concrete.

[0028] As a preferred technical solution of this embodiment, a feeding hopper 11 is connected and installed at the input end of the screw pump body 12; the feeding hopper 11 contains the concrete to be filled, and can continuously provide the concrete raw materials that can be pumped for the conveying screw rod 19.

[0029] As a preferred technical solution of this embodiment, two liquid injection pipes 18 are connected and installed on the side wall of the moving frame 7, a threaded through groove 22 is formed in the moving frame 7, the first screw rod 5 is threadedly connected with the moving frame 7 through the threaded through groove 22, a communicating pipe 21 is formed inside the moving frame 7, and the communicating pipe 21 is communicated with the liquid injection pipe 18 and the threaded through groove 22; lubricating liquid can be injected into the inside of the moving frame 7 through the liquid injection pipe 18, and the lubricating liquid flows into the inner wall of the threaded through groove 22 through the communicating pipe 21, which can realize the lubrication between the first screw rod 5 and the moving frame 7, and improves the convenience of maintaining the device.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A prestressed concrete precast pile production mold, comprising two fixing seats (1), an upper mold (16) and a lower mold (13), characterized in that: A plurality of fixing rings (2) are fixedly mounted on the top ends of the two fixing seats (1), a first screw rod (5) and two sliding rods (6) are respectively arranged between the plurality of fixing rings (2), the first screw rod (5) is rotatably connected to the fixing ring (2), the sliding rod (6) is fixedly connected to the fixing ring (2), a plurality of connecting plates (14) are fixedly mounted on the side walls of the lower mold (13) and the upper mold (16), a plurality of moving frames (7) are fixedly mounted on the bottom end of the lower mold (13), the moving frames (7) are threadedly connected to the first screw rod (5), and the moving frames (7) are connected to the two fixing rings (2). A sliding rod (6) is slidably connected, a fixed plate (3) is fixedly installed on the side wall of one of the fixed seats (1), and an injection pipe (10) is arranged on the fixed plate (3), and the injection pipe (10) passes through the side wall of the fixed plate (3) and is rotatably connected to the fixed plate (3), a first gear (8) and a second gear (9) are fixedly installed on the first screw rod (5) and the injection pipe (10), respectively, and the first gear (8) and the second gear (9) are meshed with each other, and one end of the injection pipe (10) extends between the upper mold (16) and the lower mold (13) and is provided with a discharge pipe (20).

2. A prestressed concrete precast pile production mold according to claim 1, characterized in that: A plurality of bolts (15) are threadedly mounted between a connecting plate (14) disposed on the side walls of the upper mold (16) and the lower mold (13); the upper mold (16) and the lower mold (13) are fixedly connected by the bolts (15).

3. The prestressed concrete precast pile production mold according to claim 1 is characterized in that: A motor (4) is fixedly mounted on the side wall of one of the fixing seats (1), and an output end of the motor (4) is drivingly connected to a first screw rod (5).

4. The prestressed concrete precast pile production mold according to claim 1, characterized in that: A screw pump body (12) is fixedly mounted on one end of the injection pipe (10), a conveying screw (19) is rotatably mounted inside the injection pipe (10), and the conveying screw (19) is drivingly connected to the screw pump body (12).

5. A prestressed concrete precast pile production mold according to claim 4, characterized in that: The input end of the screw pump body (12) is connected to a lower hopper (11).

6. The prestressed concrete precast pile production mold according to claim 1, characterized in that: Two injection pipes (18) are connected and installed on the side wall of the movable frame (7); a threaded through groove (22) is provided on the movable frame (7); the first screw rod (5) is threadedly connected to the movable frame (7) via the threaded through groove (22); a connecting pipe (21) is provided inside the movable frame (7); the connecting pipe (21) is connected to the injection pipe (18) and the threaded through groove (22).

Images