A vertical prestressed pipeline communication grouting device

Abstract

The application provides a vertical pre-stressed pipeline communication pressure grouting device, which comprises a pressure grouting device body, the pressure grouting device body comprises a first pre-stressed pipeline, a second pre-stressed pipeline and a blocking mechanism, the top of the first pre-stressed pipeline and the second pre-stressed pipeline is provided with an independent blocking mechanism, the side of the blocking mechanism is connected with an injection inlet, a grouting pipe is connected with external concrete conveying equipment in communication, the bottom end of the first pre-stressed pipeline and the second pre-stressed pipeline is provided with a bottom mounting plate, the vertical pre-stressed pipeline communication pressure grouting device can discharge all the air at the top of the pre-stressed pipeline through the open state of the top after the pressure grouting in the later stage, so that the quality of the pressure grouting is improved, the first communication mechanism and the second communication mechanism are arranged at the bottom, the second communication mechanism can be automatically triggered and opened after the first communication mechanism is blocked, so that the pressure grouting process can be smoothly completed.

Description

A vertical prestressed duct connecting grouting device Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a vertical prestressed duct connection grouting device. Background Technology

[0002] Prestressed ducts, also known as corrugated pipes, are embedded inside concrete bridges to improve overall stiffness and load-bearing capacity. The quality of grouting compaction significantly impacts bridge durability. Defective grouting quality can lead to prestress loss over time, altering the designed stress state of the beam and reducing the bridge's load-bearing capacity, thus affecting its service life. Therefore, quality inspection of prestressed duct grouting is crucial for ensuring bridge construction quality. In existing technologies, grouting of vertical prestressed ducts involves directly injecting concrete into one duct and using a connecting structure at the bottom to discharge grout from the top of the other duct. This process is completed after a certain time. However, to prevent premature solidification of external concrete during the initial duct embedding, the top of the prestressed duct is often sealed. This prevents air from escaping from the top of the duct during later grouting, resulting in poor grout compaction. Furthermore, blockages in the connecting structure of conventional grouting devices reduce subsequent grouting efficiency. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a vertical prestressed pipe connection grouting device to solve the problems mentioned in the background technology. This invention can simultaneously prevent the blockage inside the pipe and completely remove air, and has a backup connection structure.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a vertical prestressed duct grouting device, comprising a grouting device body, the grouting device body including a first prestressed duct, a second prestressed duct, and a sealing mechanism. Each of the first and second prestressed ducts has an independent sealing mechanism at its top. An injection port is connected to the side of each sealing mechanism, and a grouting pipe is connected to the end of each injection port. The grouting pipe is connected to an external concrete conveying device. Bottom mounting plates are installed at the bottom of both the first and second prestressed ducts. Bottom anchor rods are inserted into the surface of the bottom mounting plates. The first prestressed duct is connected to the second prestressed duct via a first connecting mechanism and a second connecting mechanism. The first connecting mechanism is horizontal, while the second connecting mechanism is inclined. The second connecting mechanism is located on top of the first connecting mechanism.

[0005] Furthermore, the sealing mechanism includes a sealing pipe and a docking mechanism. A top mounting plate is provided at the bottom of the sealing pipe, and top anchor rods are inserted through the surface of the top mounting plate. The top of the docking mechanism is welded to the top mounting plate as a whole.

[0006] Furthermore, a sealing end cap is filled at the top of the sealing pipe, a threaded post is inserted in the middle of the sealing end cap, a tie rod is installed at the top of the threaded post, a partition is provided on the inner wall of the sealing pipe, and a threaded hole is opened in the middle of the partition.

[0007] Furthermore, a sandwich layer is provided on the top side of the sealing end cap. The sandwich layer is located at the joint between the sealing end cap and the top of the sealing pipe. A metal ring is inserted inside the sandwich layer. After the sealing end cap is screwed into the threaded hole by a threaded post, it is fixed to the sealing pipe part as a whole.

[0008] Furthermore, the docking mechanism includes a docking pipe and a support ring. The top of the inner side of both the first prestressed pipe and the second prestressed pipe is welded with a support ring, and the bottom of the outer side of the docking pipe is provided with a pressing ring.

[0009] Furthermore, the docking pipe is in contact with the surface of the support ring through the bottom pressing ring, and the bottom end of the top mounting plate is provided with an inflow channel. There is a gap between the inner side of the first prestressed pipe and the second prestressed pipe and the surface of the docking pipe, and the gap is connected to the external space through the inflow channel.

[0010] Furthermore, the first connecting mechanism is composed of a first connecting tube, the surface of which is provided with a plurality of protruding rings, and the two ends of the first connecting tube are provided with first connecting holes.

[0011] Furthermore, both the first prestressed duct and the second prestressed duct have a first connecting hole on their bottom side, and the two first connecting holes are on the same horizontal straight line.

[0012] Furthermore, the second connecting mechanism mainly consists of a second connecting tube, the inside of which is filled with a metal plug, the surface of which is covered with a rubber layer, and the inside of which is provided with a connecting groove.

[0013] Furthermore, the first prestressed pipe and the second prestressed pipe are provided with second connecting holes on their sides. The two ends of the second connecting pipe are respectively fixedly connected to the two second connecting holes. The metal plug is in contact with and adheres to the inner wall of the second connecting pipe through the rubber layer on its surface.

[0014] The beneficial effects of the present invention: The present invention provides a vertical prestressed pipe grouting device, comprising a grouting device body, wherein the grouting device body includes a first prestressed pipe, a second prestressed pipe, a sealing mechanism, an injection port, a grouting pipe, a top mounting plate, a first connecting mechanism, a second connecting mechanism, a sealing pipe, a partition, a threaded hole, a sealing end cap, a threaded column, a sandwich layer, a tie rod, a metal ring, a top anchor rod, a docking mechanism, a first connecting pipe, a convex ring, a first connecting hole, a bottom mounting plate, a bottom anchor rod, a second connecting pipe, a connecting groove, a second connecting hole, a metal plug, a rubber layer, an inflow channel, a docking pipe, a pressing ring, and a supporting ring.

[0015] 1. The vertical prestressed duct connecting grouting device can seal the top of the prestressed duct during the installation process through a sealing mechanism, which provides a guarantee for the subsequent grouting process and ensures a smoother grouting process.

[0016] 2. The vertical prestressed duct is connected to the grouting device. In the later stage of grouting, the sealing mechanism can be removed, and all the air at the top of the prestressed duct can be discharged through the open state at the top, so as to avoid the presence of air inside the prestressed duct and improve the quality of grouting.

[0017] 3. The vertical prestressed duct grouting device is equipped with a first connecting mechanism and a second connecting mechanism at the bottom. If the first connecting mechanism is blocked, the second connecting mechanism can be automatically triggered to open, providing a backup connecting structure for grouting and enabling the grouting process to be completed smoothly. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the external structure of a vertical prestressed duct connecting grouting device according to the present invention;

[0019] Figure 2 is a schematic diagram of the sealing mechanism of a vertical prestressed duct grouting device according to the present invention;

[0020] Figure 3 is a schematic diagram of the connecting mechanism of a vertical prestressed pipe connecting grouting device according to the present invention;

[0021] Figure 4 is an internal cross-sectional view of the second connecting mechanism of a vertical prestressed pipe connecting grouting device according to the present invention;

[0022] Figure 5 is a schematic diagram of the docking mechanism of a vertical prestressed pipe connecting grouting device according to the present invention;

[0023] In the diagram: 1. First prestressed duct; 2. Second prestressed duct; 3. Sealing mechanism; 4. Injection port; 5. Grouting pipe; 6. Top mounting plate; 7. First connecting mechanism; 8. Second connecting mechanism; 9. Sealing duct; 10. Partition plate; 11. Threaded hole; 12. Sealing end cap; 13. Threaded post; 14. Interlayer; 15. Tie rod; 16. Metal ring; 17. Top anchor rod; 18. Connecting mechanism; 19. First connecting pipe; 20. Convex ring; 21. First connecting hole; 22. Bottom mounting plate; 23. Bottom anchor rod; 24. Second connecting pipe; 25. Connecting groove; 26. Second connecting hole; 27. Metal plug; 28. Rubber layer; 29. ​​Inflow channel; 30. Connecting pipe; 31. Pressing ring; 32. Support ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] Please refer to Figures 1 to 5. This invention provides a technical solution: a vertical prestressed duct grouting device, comprising a grouting device body. The grouting device body includes a first prestressed duct 1, a second prestressed duct 2, and a sealing mechanism 3. Each of the first and second prestressed ducts 1 and 2 has an independent sealing mechanism 3 at its top. An injection port 4 is connected to the side of each sealing mechanism 3, and a grouting pipe 5 is connected to the end of each injection port 4. The grouting pipe 5 is connected to external concrete conveying equipment. Bottom mounting plates 22 are installed at the bottom of both the first and second prestressed ducts 1 and 2. Bottom anchor rods 23 are inserted into the surface of the bottom mounting plates 22. The first prestressed duct 1 is connected to the second prestressed duct 2 through a first connecting mechanism 7 and a second connecting mechanism 8. The first connecting mechanism 7 is generally horizontal, while the second connecting mechanism 8 is generally inclined. The second connecting mechanism 8 is provided with… The vertical prestressed duct grouting device, located at the top of the first connecting mechanism 7, injects concrete sequentially into the interior of the first prestressed duct 1 and the second prestressed duct 2 through an external grouting device. Specifically, before construction, the first prestressed duct 1 and the second prestressed duct 2 are connected through the first connecting mechanism 7 and the second connecting mechanism 8, and then fixed with the top mounting plate 6 and the bottom mounting plate 22. The sealing mechanism 3 is installed on the top of the first prestressed duct 1 and the second prestressed duct 2 respectively, and then the external concrete covering construction can be carried out. The surfaces of the first prestressed duct 1 and the second prestressed duct 2 are covered with concrete. After solidification, concrete is injected into the interior of the first prestressed duct 1 and the second prestressed duct 2 through the grouting pipe 5, filling the two prestressed ducts through the connecting pipe. In the later stage, the top sealing structure is opened to squeeze out the air on the top inner side of the first prestressed duct 1.

[0026] In this embodiment, the sealing mechanism 3 includes a sealing pipe 9 and a docking mechanism 18. A top mounting plate 6 is provided at the bottom of the sealing pipe 9, and top anchor rods 17 are inserted through the surface of the top mounting plate 6. The top of the docking mechanism 18 is partially welded to the top mounting plate 6 to form a whole. A sealing end cap 12 is filled at the top of the sealing pipe 9, and a threaded post 13 is inserted through the middle of the sealing end cap 12. A pull rod 15 is installed at the top of the threaded post 13. A partition 10 is provided on the inner wall of the sealing pipe 9, and a threaded hole 11 is opened in the middle of the partition 10. A sandwich layer 14 is provided on the top side of the sealing end cap 12, and the sandwich layer 14 is located at the docking point between the sealing end cap 12 and the top of the sealing pipe 9. A metal ring 16 is inserted inside the sandwich layer 14. The sealing end cap 12 is screwed into the threaded hole 11 by the threaded post 13 and then fixed as a whole with the sealing pipe 9. Through the sealing mechanism 3 at the top, the top can be sealed during the embedding of the prestressed pipe, preventing concrete from flowing into the prestressed pipe in advance and causing blockage. This provides a guarantee for the subsequent grouting process and ensures a smoother grouting process. Specifically, during installation, the sealing end cap 12 is first placed on the top of the sealing pipe 9. The threaded post 13 is then passed through the threaded hole 11 in the sealing end cap 12 and the bottom partition 10 in sequence to seal the top of the entire sealing mechanism 3. A metal ring 16 is then inserted into the interlayer 14. When embedding the prestressed pipe on the outside, concrete can be prevented from flowing into the pipe.

[0027] In this embodiment, the docking mechanism 18 includes a docking pipe 30 and a support ring 32. Support rings 32 are welded to the top of the inner sides of both the first prestressed pipe 1 and the second prestressed pipe 2. A pressing ring 31 is provided at the bottom of the outer side of the docking pipe 30. The docking pipe 30 contacts and fits against the surface of the support ring 32 through the pressing ring 31 at the bottom. An inflow channel 29 is provided at the bottom end of the top mounting plate 6. A gap is provided between the inner sides of the first prestressed pipe 1 and the second prestressed pipe 2 and the surface of the docking pipe 30, and this gap is partially connected to the external space through the inflow channel 29. After grouting by the grouting device, the sealing mechanism 3 can be removed, allowing grouting to proceed through the open top. All air is expelled from the top of the prestressed duct, preventing air from remaining inside the duct and improving the quality of grouting. Furthermore, the sealing end cap 12 and metal ring 16 structure on the sealing mechanism 3 make the removal of the top of the sealing mechanism easier and more convenient, preventing jamming after concrete hardening. Specifically, during grouting, the top metal ring 16 is removed first. At this point, the sealing end cap 12 is only connected to the sealing duct 9 via the threaded post 13. The hardened concrete, due to the isolation provided by the metal ring 16, will not connect or fix the sealing end cap 12 to the sealing duct 9. After removing the sealing end cap 12 and threaded post 13, the air inside the first prestressed duct 1 can be expelled upwards through the threaded hole 11 during subsequent grouting.

[0028] In this embodiment, the first connecting mechanism 7 is composed of a first connecting pipe 19. The surface of the first connecting pipe 19 is provided with a plurality of protruding rings 20. The two ends of the first connecting pipe 19 are provided with first connecting holes 21. The bottom sides of the first prestressed pipe 1 and the second prestressed pipe 2 are both provided with first connecting holes 21, and the two first connecting holes 21 are on the same horizontal straight line. When concrete grouting is carried out, the grout inside the first prestressed pipe 1 can be transported to the inside of the second prestressed pipe 2 through the first connecting pipe 19. Since the two connecting mechanisms are buried at the same time when the prestressed pipe is embedded, the first connecting pipe 19 can be fixed by the protruding rings 20 to prevent shaking during subsequent grouting.

[0029] In this embodiment, the second connecting mechanism 8 mainly consists of a second connecting pipe 24. A metal plug 27 is filled inside the second connecting pipe 24, and a rubber layer 28 is attached to the surface of the metal plug 27. A connecting groove 25 is provided inside the second connecting pipe 24. Second connecting holes 26 are provided on the sides of the first prestressed pipe 1 and the second prestressed pipe 2. Both ends of the second connecting pipe 24 are respectively fixedly connected to the two second connecting holes 26. The metal plug 27 is in contact with and adheres to the inner wall of the second connecting pipe 24 through the rubber layer 28 on its surface. A first connecting mechanism 7 and a second connecting mechanism 8 are provided at the bottom. The two connecting pipes can prevent the first connecting mechanism from being blocked. If the first connecting mechanism 7 becomes blocked, leading to a decrease in subsequent grouting efficiency, the second connecting mechanism 8 can be automatically triggered to open, providing a backup connecting structure for grouting and ensuring the smooth completion of the grouting process. When the first connecting mechanism 7 is not blocked, the grout pressure inside the second connecting pipe 24 is low, so the metal plug 27 will not move upward. However, when the first connecting pipe 19 becomes blocked, it will cause an increase in the pressure inside the entire first prestressed pipe 1, which in turn increases the pressure inside the second connecting pipe 24. In this state, the metal plug 27 will be pushed upward until it is pushed into the connecting groove 25, thus opening the second connecting pipe 24 and cooperating with the blocked first connecting pipe 19 to connect and transport the grout.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vertical prestressed duct connection grouting device, comprising a grouting device body, characterized in that: The grouting device body includes a first prestressed pipe (1), a second prestressed pipe (2), and a sealing mechanism (3). Each of the first and second prestressed pipes (1 and 2) has an independent sealing mechanism (3) at its top. An injection port (4) is connected to the side of each sealing mechanism (3), and a grouting pipe (5) is connected to the end of each injection port (4). The grouting pipe (5) is connected to an external concrete conveying device. Bottom mounting plates (22) are installed at the bottom of both the first and second prestressed pipes (1 and 2). Bottom anchor rods (23) are inserted into the surface of the bottom mounting plates (22). The first prestressed pipe (1) is connected to the second prestressed pipe (2) via a first connecting mechanism (7) and a second connecting mechanism (8). The first connecting mechanism (7) is horizontal, while the second connecting mechanism (8) is inclined. The second connecting mechanism (8) is located within the first connecting mechanism (7). 7) Top; The sealing mechanism (3) includes a sealing pipe (9) and a docking mechanism (18). The bottom of the sealing pipe (9) is provided with a top mounting plate (6). The surface of the top mounting plate (6) is interspersed with top anchor rods (17). The top of the docking mechanism (18) is partially welded to the top mounting plate (6) as a whole. The top of the sealing pipe (9) is filled with a sealing end cap (12). The middle of the sealing end cap (12) is interspersed with a threaded column (13). The top of the threaded column (13) is equipped with a pull rod (15). The inner wall of the sealing pipe (9) is provided with a partition (10). The middle of the partition (10) is provided with a threaded hole (11). The docking mechanism (18) includes a docking pipe (30) and a support ring (32). The top of the inner side of the first prestressed pipe (1) and the second prestressed pipe (2) are both welded with support rings (32). The bottom of the outer side of the docking pipe (30) is provided with a pressing ring (31).

2. The vertical prestressed duct connection grouting device according to claim 1, characterized in that: The sealing end cap (12) has a sandwich layer (14) on its side top. The sandwich layer (14) is located at the top joint of the sealing end cap (12) and the sealing pipe (9). A metal ring (16) is inserted inside the sandwich layer (14). The sealing end cap (12) is screwed into the threaded hole (11) by a threaded post (13) and then fixed together with the sealing pipe (9) as a whole.

3. The vertical prestressed duct connection grouting device according to claim 1, characterized in that: The docking pipe (30) is in contact with the surface of the support ring (32) through the bottom pressing ring (31). The bottom end of the top mounting plate (6) is provided with an inflow channel (29). There is a gap between the inner side of the first prestressed pipe (1) and the second prestressed pipe (2) and the surface of the docking pipe (30), and the gap is partially connected to the external space through the inflow channel (29).

4. The vertical prestressed duct connection grouting device according to claim 1, characterized in that: The first connecting mechanism (7) is composed of a first connecting pipe (19). The surface of the first connecting pipe (19) is provided with a plurality of protruding rings (20), and the two ends of the first connecting pipe (19) are provided with first connecting holes (21).

5. A vertical prestressed duct connection grouting device according to claim 4, characterized in that: The bottom sides of the first prestressed duct (1) and the second prestressed duct (2) are provided with first connecting holes (21), and the two first connecting holes (21) are on the same horizontal straight line.

6. A vertical prestressed duct connection grouting device according to claim 4, characterized in that: The second connecting mechanism (8) is mainly composed of a second connecting tube (24), the inside of which is filled with a metal plug (27), the surface of which is covered with a rubber layer (28), and the inside of which is provided with a connecting groove (25).

7. A vertical prestressed duct connection grouting device according to claim 6, characterized in that: The first prestressed pipe (1) and the second prestressed pipe (2) are provided with second connecting holes (26) on their sides. The two ends of the second connecting pipe (24) are respectively fixedly connected to the two second connecting holes (26). The metal plug (27) is in contact with the inner wall of the second connecting pipe (24) through the rubber layer (28) on its surface.

Images