High-strength steel pile casing applied to underwater pile foundation

Abstract

The utility model discloses a high-strength steel casing applied to an underwater pile foundation, and relates to the technical field of steel casings. The device comprises a first steel casing, a second steel casing is mounted at the top of the first steel casing, an inner ring plate is fixedly connected to the bottom of the second steel casing, an annular groove matched with the inner ring plate is formed in the top of the first steel casing, four storage grooves are evenly formed in the outer side of the first steel casing, and four pairs of fixing insertion holes are formed in the top of the first steel casing; and the bottom of the fixed insertion hole is communicated with the storage groove. After a traction locking bolt penetrates through a fixing insertion hole to be in threaded connection with a locking screw groove, one end of the locking bolt is installed in a storage groove, and when the first steel casing and the second steel casing are inserted into the ground, a guiding side plate abuts against an underground soil layer and extrudes the soil layer towards the two sides, so that the soil layer is prevented from being damaged. In this way, the situation that when the first steel casing and the second steel casing are guided to be inserted into the ground, the locking bolts are squeezed by the soil layer to be loosened is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of steel casings, and in particular to a high-strength steel casing applied to underwater pile foundations. Background Art

[0002] Steel casing is an important and indispensable structure for underwater drilling pile foundation construction. The steel casing in underwater drilling plays an important role in storing drilling wall mud, maintaining overpressure head in the hole, supporting the hole wall, guiding the drilling, and bearing the load of the drilling rig and platform when necessary. Therefore, the installation technology of steel casing is very important.

[0003] The existing Chinese patent authorization announcement number: CN216041129U mentions a combined pile foundation steel casing, including a steel casing body; the steel casing body includes a plurality of steel casing segments, all of which are coaxially arranged, a connecting plate is arranged at one end of the steel casing segment, and a docking plate is arranged at the other end of the steel casing segment, and a docking groove is provided at one end of the docking plate away from the connecting plate, and the docking groove is arranged around the circumference of the docking plate; the connecting plate can be inserted into the docking groove of the docking plate of the adjacent steel casing segment, and the side wall of the connecting plate and the inner wall of the docking groove are mutually adapted. This application has the effect of improving the convenience of pile foundation steel casing during transportation.

[0004] When the existing steel casing is in use, the connecting bolt is inserted into the first docking block and threadedly connected with the second docking block of the adjacent steel casing section, and then the fixing nut is tightened on the connecting bolt to complete the fixed connection between the two adjacent steel casing sections. However, in actual use, as the steel casing drives the connecting bolt and the fixing nut to be inserted into the ground, the fixing nut and the connecting bolt are prone to friction with the underground soil layer, which causes the connecting bolt and the fixing nut to loosen, thereby reducing the connection strength and stability between the two adjacent steel casings. Utility Model Content

[0005] The purpose of the present application is to solve the problem that as the steel casing drives the connecting bolts and the fixing nuts to be inserted into the ground, the fixing nuts and the connecting bolts are easily subject to friction with the underground soil layer, thereby causing looseness between the connecting bolts and the fixing nuts, thereby reducing the connection strength and stability between two adjacent steel casings. The present application provides a high-strength steel casing for underwater pile foundations.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A high-strength steel casing used in underwater pile foundations includes a first steel casing, a second steel casing is installed on the top of the first steel casing, an inner ring plate is fixedly connected to the bottom of the second steel casing, an annular groove matching the inner ring plate is provided on the top of the first steel casing, four receiving grooves are evenly provided on the outer side of the first steel casing, four pairs of fixing sockets are provided on the top of the first steel casing, the bottoms of the fixing sockets are connected to the receiving grooves, locking bolts are inserted into the fixing sockets, a locking screw groove threadedly connected to the locking bolt is provided on the bottom of the second steel casing, and four guide side plates are evenly fixedly connected to the outer side of the first steel casing, and the four guide side plates are respectively installed on one side of the four receiving grooves.

[0008] By adopting the above technical scheme, by setting the storage groove and the fixed socket, the locking bolt, the locking screw groove, and the guide side plate for coordinated use, when the locking bolt is pulled through the fixed socket to form a threaded connection with the locking screw groove, one end of the locking bolt is installed inside the storage groove, and the guide side plate is used to form a conflict with the underground soil layer when the first steel casing and the second steel casing are inserted into the ground, and the soil layer is squeezed to both sides, thereby effectively reducing the situation in which the locking bolt is squeezed by the soil layer and becomes loose when the first steel casing and the second steel casing are guided to be inserted into the ground, thereby improving the connection strength and stability between the first steel casing and the second steel casing.

[0009] Furthermore, an anti-falling sliding groove is provided inside the fixed socket, one end of the locking bolt is fixedly connected with an anti-falling sliding sheet, and the anti-falling sliding sheet is movably installed inside the anti-falling sliding groove.

[0010] By adopting the above technical solution, by setting the anti-falling slide groove and the anti-falling slide sheet in combination, it is convenient to limit the range of movement of the locking bolt along the length direction of the fixed socket, effectively reducing the situation where the locking bolt is detached from the inside of the fixed socket, thereby effectively reducing the situation where the locking bolt is lost and improving the practicality of the device.

[0011] Furthermore, one end of the locking bolt is sleeved with a storage spring, and the storage spring is installed between the anti-falling sliding sheet and the anti-falling sliding groove.

[0012] By adopting the above technical solution, through the coordinated use of the storage spring and the anti-falling sliding plate, it is convenient to utilize the rebound of the storage spring to push out the anti-falling sliding plate to drive one end of the locking bolt to retract into the interior of the fixed socket, thereby reducing the situation where one end of the locking bolt is stuck out of the top of the fixed socket, resulting in wear when the end faces of the first steel casing and the second steel casing are aligned, thereby improving the practicality of the device.

[0013] Furthermore, a gasket is sleeved on one end of the locking bolt, and the gasket is installed between the locking bolt and the first steel casing.

[0014] By adopting the above technical solution and setting the cooperation between the gasket and the locking bolt, the contact area between the locking bolt and the first steel casing is effectively increased, the friction between the locking bolt and the first steel casing is increased, and the connection between the locking bolt and the first steel casing is more stable.

[0015] Furthermore, an annular rubber pad is fixedly connected to the bottom of the second steel casing, and the annular rubber pad is installed between the first steel casing and the second steel casing.

[0016] By adopting the above technical scheme, by arranging the annular rubber pad for use in conjunction with the first steel casing and the second steel casing, the elastic deformation characteristics of the annular rubber pad are conveniently utilized, the sealing between the first steel casing and the second steel casing is improved, and the leakage between the first steel casing and the second steel casing is reduced.

[0017] Furthermore, four anti-rotation blocks are evenly and fixedly connected to the bottom of the inner ring plate, and an anti-rotation groove adapted to the anti-rotation blocks is formed at the bottom of the annular groove.

[0018] By adopting the above technical scheme, by setting the anti-rotation block and the anti-rotation groove for use in combination, it is convenient to utilize the mutual interference between the anti-rotation block and the anti-rotation groove, thereby effectively reducing the misaligned rotation between the first steel casing and the second steel casing, thereby reducing the looseness of the connection end between the first steel casing and the second steel casing, and improving the stability of the device.

[0019] Furthermore, a plurality of annular reinforcing ribs are fixedly connected to the inner side of the inner ring plate.

[0020] By adopting the above technical solution, the supporting strength inside the inner ring plate is effectively improved by providing annular reinforcement ribs, thereby further improving the stability of the device.

[0021] Furthermore, the surfaces of the locking bolt and the storage spring are coated with a silicone waterproof coating.

[0022] By adopting the above technical solution and providing an organic silicon waterproof coating, the corrosion resistance of the device surface is effectively improved, thereby extending the service life of the device.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. By setting the storage groove and the fixed socket, the locking bolt, the locking screw groove and the guide side plate for coordinated use, when the locking bolt is pulled through the fixed socket to form a threaded connection with the locking screw groove, one end of the locking bolt is installed inside the storage groove, and the guide side plate is used to form a conflict with the underground soil layer when the first steel casing and the second steel casing are inserted into the ground, and the soil layer is squeezed to both sides, thereby effectively reducing the situation in which the locking bolt is squeezed by the soil layer and becomes loose when the first steel casing and the second steel casing are guided to be inserted into the ground, thereby improving the connection strength and stability between the first steel casing and the second steel casing.

[0025] 2. By setting up the anti-rotation block and the anti-rotation groove for use, the mutual interference between the anti-rotation block and the anti-rotation groove is utilized to effectively reduce the misaligned rotation between the first steel casing and the second steel casing, thereby reducing the looseness of the connection end between the first steel casing and the second steel casing and improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is an exploded view of the internal structure of the device body in this application.

[0028] Figure 3 It is a cross-sectional view of the internal structure of the fixed socket in this application.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Description of reference numerals:

[0031] 1. First steel casing; 2. Second steel casing; 3. Inner ring plate; 4. Annular groove; 5. Storage groove; 6. Fixing socket; 7. Locking bolt; 8. Locking screw groove; 9. Guide side plate; 10. Anti-falling slide groove; 11. Anti-falling slide plate; 12. Storage spring; 13. Gasket; 14. Annular rubber pad; 15. Anti-rotation block; 16. Anti-rotation groove; 17. Annular reinforcement rib. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiments of the present application disclose a high-strength steel casing applied to an underwater pile foundation.

[0034] Reference Figure 1-Figure 4A high-strength steel casing used in underwater pile foundations includes a first steel casing 1, a second steel casing 2 is installed on the top of the first steel casing 1, an inner ring plate 3 is fixedly connected to the bottom of the second steel casing 2, an annular groove 4 adapted to the inner ring plate 3 is opened on the top of the first steel casing 1, four receiving grooves 5 are evenly opened on the outside of the first steel casing 1, four pairs of fixed sockets 6 are opened on the top of the first steel casing 1, the bottom of the fixed sockets 6 are connected to the receiving grooves 5, and locking bolts 7 are inserted into the inside of the fixed sockets 6, a locking screw groove 8 threadedly connected to the locking bolt 7 is opened on the bottom of the second steel casing 2, and four guide side plates 9 are evenly fixedly connected to the outside of the first steel casing 1, and the four guide side plates 9 are respectively installed on one side of the four receiving grooves 5.

[0035] When in use, first guide the second steel casing 2 to drive the inner ring plate 3 to insert into the annular groove 4, and at the same time make the second steel casing 2 drive the locking screw groove 8 to align with the fixed socket 6, then push one end of the locking bolt 7 through the fixed socket 6 and form a conflict with one end of the locking screw groove 8, and then rotate the locking bolt 7 so that one end of the locking bolt 7 passes through the fixed socket 6 and forms a threaded connection with the locking screw groove 8, and at the same time, a fixed connection is formed between the first steel casing 1 and the second steel casing 2, and one end of the locking bolt 7 is tightened. It is installed inside the receiving groove 5, so that when the first steel casing 1 and the second steel casing 2 are inserted into the ground, the underground soil layer contacts the guide side plate 9 and is squeezed to both sides along the inclined surface of the guide side plate 9, thereby reducing the soil layer from entering the receiving groove 5 and squeezing one end of the locking bolt 7. This effectively reduces the situation where the locking bolt 7 is squeezed and loosened by the soil layer when the first steel casing 1 and the second steel casing 2 are inserted into the ground, thereby improving the connection strength and stability between the first steel casing 1 and the second steel casing 2.

[0036] Reference Figure 3 and Figure 4 An anti-falling slide groove 10 is provided inside the fixed socket 6 , and an anti-falling slide piece 11 is fixedly connected to one end of the locking bolt 7 , and the anti-falling slide piece 11 is movably installed inside the anti-falling slide groove 10 .

[0037] When in use, when the locking bolt 7 has not yet formed a threaded connection with the locking screw groove 8, the locking bolt 7 slides along the length direction of the anti-falling slide groove 10 through the anti-falling slide plate 11, thereby reducing the locking bolt 7 from sliding out of the fixed socket 6 along the length direction of the anti-falling slide groove 10, thereby reducing the locking bolt 7 from escaping from the fixed socket 6, thereby effectively reducing the loss of the locking bolt 7 and improving the practicability of the device.

[0038] Reference Figure 3 and Figure 4One end of the locking bolt 7 is sleeved with a receiving spring 12 , and the receiving spring 12 is installed between the anti-falling sliding sheet 11 and the anti-falling sliding groove 10 .

[0039] When in use, the storage spring 12 is set to rebound and push out the anti-falling sliding piece 11, so that the anti-falling sliding piece 11 drives the locking bolt 7 to move downward along the length direction of the anti-falling sliding groove 10, and drives the top end of the locking bolt 7 to be completely retracted into the interior of the fixed socket 6, thereby effectively reducing the situation where one end of the locking bolt 7 is stuck out of the top of the fixed socket 6, resulting in wear when the end faces of the first steel casing 1 and the second steel casing 2 are aligned, thereby improving the practicability of the device.

[0040] Reference Figure 3 and Figure 4 One end of the locking bolt 7 is sleeved with a gasket 13 , and the gasket 13 is installed between the locking bolt 7 and the first steel casing 1 .

[0041] During use, when one end of the locking bolt 7 is rotated to form a threaded connection with the locking screw groove 8, the locking bolt 7 drives the gasket 13 to form a conflict with one end of the first steel casing 1, thereby effectively increasing the contact area between the locking bolt 7 and the first steel casing 1, increasing the friction between the locking bolt 7 and the first steel casing 1, and making the connection between the locking bolt 7 and the first steel casing 1 more stable.

[0042] Reference Figure 1 and Figure 2 An annular rubber pad 14 is fixedly connected to the bottom of the second steel casing 2 , and the annular rubber pad 14 is installed between the first steel casing 1 and the second steel casing 2 .

[0043] During use, when the locking bolt 7 is rotated to form a threaded connection with the locking screw groove 8, the locking bolt 7 drives the second steel casing 2 to move closer to the first steel casing 1, and at the same time, the first steel casing 1 cooperates with the second steel casing 2 to squeeze the annular rubber gasket 14, so that the annular rubber gasket 14 is deformed under force and filled between the first steel casing 1 and the second steel casing 2, thereby effectively improving the sealing between the first steel casing 1 and the second steel casing 2 and reducing the leakage between the first steel casing 1 and the second steel casing 2.

[0044] Reference Figure 1 and Figure 2 Four anti-rotation blocks 15 are evenly and fixedly connected to the bottom of the inner ring plate 3 , and an anti-rotation groove 16 adapted to the anti-rotation blocks 15 is opened at the bottom of the annular groove 4 .

[0045] During use, when the second steel casing 2 is pulled to drive the inner ring plate 3 to be inserted into the annular groove 4, the second steel casing 2 drives the anti-rotation block 15 to be inserted into the anti-rotation groove 16, so that when the first steel casing 1 and the second steel casing 2 are subjected to the torsion of the soil layer, the mutual interference between the anti-rotation block 15 and the anti-rotation groove 16 is utilized to drive the first steel casing 1 and the second steel casing 2 to rotate synchronously, thereby reducing the independent rotation of the first steel casing 1 and the second steel casing 2, which causes the loosening of the connection end of the first steel casing 1 and the second steel casing 2, and improves the stability of the device.

[0046] Reference Figure 1 and Figure 2 A plurality of annular reinforcing ribs 17 are fixedly connected to the inner side of the inner ring plate 3 .

[0047] When in use, the annular reinforcement ribs 17 are provided to effectively increase the support strength inside the inner ring plate 3 , thereby improving the connection strength and stability of the connection ends of the first steel casing 1 and the second steel casing 2 .

[0048] Reference Figure 3 and Figure 4 The surfaces of the locking bolt 7 and the storage spring 12 are coated with a silicone waterproof coating.

[0049] When in use, by coating the surfaces of the locking bolt 7 and the storage spring 12 with a silicone waterproof coating, the corrosion resistance of the surfaces of the locking bolt 7 and the storage spring 12 is improved, the service life of the locking bolt 7 and the storage spring 12 is extended, and the practicality of the device is improved.

[0050] The implementation principle of the high-strength steel casing applied to the underwater pile foundation of this embodiment is as follows: first, the second steel casing 2 is guided to drive the inner ring plate 3 to be inserted into the annular groove 4, and at the same time, the second steel casing 2 drives the locking screw groove 8 to be aligned with the fixed insertion hole 6, and at the same time, the second steel casing 2 drives the anti-rotation block 15 to be inserted into the anti-rotation groove 16, so that when the first steel casing 1 and the second steel casing 2 are subjected to the torsion of the soil layer, the mutual interference between the anti-rotation block 15 and the anti-rotation groove 16 is utilized to reduce the misaligned rotation between the first steel casing 1 and the second steel casing 2, thereby reducing the loosening of the connection end of the first steel casing 1 and the second steel casing 2;

[0051] Then, by pushing one end of the locking bolt 7 through the fixing socket 6 and forming a conflict with one end of the locking screw groove 8, the locking bolt 7 is then rotated so that one end of the locking bolt 7 passes through the fixing socket 6 and forms a threaded connection with the locking screw groove 8, thereby forming a fixed connection between the first steel casing 1 and the second steel casing 2, and one end of the locking bolt 7 is installed inside the receiving groove 5, so that when the first steel casing 1 and the second steel casing 2 are inserted into the ground, the underground soil layer forms a conflict with the guide side plate 9 and is squeezed to both sides along the inclined surface of the guide side plate 9, thereby reducing the situation where the soil layer enters the receiving groove 5 and is squeezed against one end of the locking bolt 7.

Claims

1. A high-strength steel casing for underwater pile foundation, comprising a first steel casing (1), characterized in that: A second steel casing (2) is installed on the top of the first steel casing (1), and an inner ring plate (3) is fixedly connected to the bottom of the second steel casing (2). An annular groove (4) adapted to the inner ring plate (3) is provided on the top of the first steel casing (1), and four receiving grooves (5) are evenly provided on the outer side of the first steel casing (1). Four pairs of fixing plug holes (6) are provided on the top of the first steel casing (1), and the bottoms of the fixing plug holes (6) are connected to the receiving grooves (5). Locking bolts (7) are inserted into the fixing plug holes (6). A locking screw groove (8) threadedly connected to the locking bolt (7) is provided on the bottom of the second steel casing (2), and four guide side plates (9) are evenly fixedly connected to the outer side of the first steel casing (1), and the four guide side plates (9) are respectively installed on one side of the four receiving grooves (5).

2. The high-strength steel casing for underwater pile foundation according to claim 1 is characterized in that: An anti-drop-out slide groove (10) is provided inside the fixed insertion hole (6), and an anti-drop-out slide plate (11) is fixedly connected to one end of the locking bolt (7), and the anti-drop-out slide plate (11) is movably mounted inside the anti-drop-out slide groove (10).

3. The high-strength steel casing for underwater pile foundation according to claim 1 is characterized in that: One end of the locking bolt (7) is sleeved with a receiving spring (12), and the receiving spring (12) is installed between the anti-falling sliding sheet (11) and the anti-falling sliding groove (10).

4. The high-strength steel casing for underwater pile foundation according to claim 1, characterized in that: One end of the locking bolt (7) is sleeved with a gasket (13), and the gasket (13) is installed between the locking bolt (7) and the first steel casing (1).

5. The high-strength steel casing for underwater pile foundation according to claim 1 is characterized in that: An annular rubber pad (14) is fixedly connected to the bottom of the second steel casing (2), and the annular rubber pad (14) is installed between the first steel casing (1) and the second steel casing (2).

6. The high-strength steel casing for underwater pile foundation according to claim 1, characterized in that: Four anti-rotation blocks (15) are evenly and fixedly connected to the bottom of the inner ring plate (3), and an anti-rotation groove (16) adapted to the anti-rotation blocks (15) is provided at the bottom of the annular groove (4).

7. The high-strength steel casing for underwater pile foundation according to claim 1 is characterized in that: A plurality of annular reinforcing ribs (17) are fixedly connected to the inner side of the inner ring plate (3).

8. The high-strength steel casing for underwater pile foundation according to claim 1, characterized in that: The surfaces of the locking bolt (7) and the storage spring (12) are both coated with an organic silicon waterproof coating.

Images