Pile foundation steel casing capable of being hoisted

Abstract

The utility model discloses a liftable pile foundation steel casing which is applied to the technical field of pile foundation steel casings and comprises a steel casing body, L-shaped sliding grooves are formed in the two sides of the interior of the steel casing body, a lifting rod is arranged in the steel casing body, and a lifting hole is formed in the top of the lifting rod. And the two ends of the hoisting rod slide into the L-shaped sliding grooves, so that the hoisting rod can be hoisted to drive the steel casing main body to move upwards and be hoisted. And meanwhile, the hoisting rod can be detached, drilling of a pile hole in the steel casing body is not affected, and the hoisting rod can be installed on the pile foundation steel casing for use. The pile foundation steel casing is embedded into the surface of a pile hole for supporting, and then the rotating rod is rotated out of the interior of the fixing block, so that the supporting block can support the steel casing body. Therefore, the risk that the pile foundation steel casing sinks in the pile hole can be reduced, and the pile foundation steel casing can be conveniently taken out subsequently.

Description

Technical Field

[0001] This utility model belongs to the technical field of pile foundation steel casing, and specifically relates to a pile foundation steel casing that can be hoisted. Background Technology

[0002] Steel casing for pile foundations is a temporary support structure used in pile foundation construction. It is mainly used to protect the borehole wall, prevent borehole collapse, and ensure the formation and construction safety of the pile hole.

[0003] Currently, Chinese utility model patent CN220503888U discloses a hoistable steel casing for pile foundations. Existing steel casings for pile foundations are generally prefabricated components manufactured according to the length of the pile hole. This results in low practicality, as it prevents the free assembly of various lengths of steel casings to suit different pile hole lengths, failing to meet actual usage needs. Furthermore, because steel casings are generally cylindrical with smooth surfaces and inner walls, hoisting them is inconvenient. When slings are applied to the surface, they easily slip, posing a significant safety hazard. Moreover, the smooth surface of the steel casing, lacking support, easily sinks into the soil when embedded in the pile hole, affecting the support effect on the pile hole and making subsequent removal of the casing inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a hoistable steel casing for pile foundations, which has the advantages of facilitating the hoisting of the steel casing, reducing the risk of the steel casing sinking inside the pile hole, and allowing for the assembly and adjustment of the length of the steel casing according to the depth of the pile hole.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a hoistable pile foundation steel casing, including a steel casing body, with L-shaped grooves opened on both sides inside the steel casing body, a hoisting rod installed inside the steel casing body, a hoisting hole opened at the top of the hoisting rod, and the two ends of the hoisting rod slidingly connected on the inner surface of the steel casing body through the L-shaped grooves.

[0006] By employing the above technical solution, the steel casing body is lifted upwards by sliding both ends of the lifting rod into the L-shaped groove. This facilitates the installation of the pile foundation steel casing, and the lifting rod can be disassembled without affecting drilling the pile hole inside the steel casing body. It can also be used on the pile foundation steel casing. By embedding the pile foundation steel casing into the surface of the pile hole for support, and then rotating the rotating rod out of the fixed block, the support block can support the steel casing body. This reduces the risk of the pile foundation steel casing sinking inside the pile hole and facilitates subsequent removal of the pile foundation steel casing. By splicing an extension tube at the bottom of the steel casing body, the length of the pile foundation steel casing can be adjusted according to the pile hole depth, ensuring the support effect on the pile hole and improving the practicality of the pile foundation steel casing.

[0007] The present invention is further configured such that: a fixing block is welded to the top surface of the steel casing body, a rotating rod is rotatably connected inside the fixing block, a threaded shaft is threadedly connected inside the rotating rod, and a support block is welded to the bottom of the threaded shaft.

[0008] By adopting the above technical solution, the risk of the steel casing of the pile foundation sinking inside the pile hole can be reduced, and it is convenient to remove the steel casing of the pile foundation in the future.

[0009] The present invention is further configured such that: an extension cylinder is provided at the bottom of the steel casing body, and a connecting protrusion is integrally formed at the top of the extension cylinder and threadedly connected to the inner surface of the steel casing body.

[0010] By adopting the above technical solution, the length of the steel casing for the pile foundation can be adjusted according to the depth of the pile hole, thus ensuring the support effect for the pile hole.

[0011] The present invention is further configured such that: both sides inside the steel casing body are provided with limiting grooves that communicate with the L-shaped sliding groove.

[0012] By adopting the above technical solution, an upward pulling force will be generated during the hoisting process, which will cause the hoisting rod to slide upward into the interior of the limiting groove, thus preventing the hoisting rod from coming out of the interior of the L-shaped sliding groove and becoming loose during the hoisting process.

[0013] The present invention is further configured such that: the side of the support block near the fixing block and the inside of the fixing block are both bolted with magnet blocks that are attracted to each other by magnetic force.

[0014] By adopting the above technical solution, after the rotating rod is rotated and stored inside the fixed block, the magnetic blocks can be attracted to each other by magnetic force to fix the support block inside the magnetic block, preventing it from automatically slipping out of the fixed block.

[0015] The present invention is further configured such that: both the bottom of the steel casing body and the extension cylinder are provided with threaded grooves, and the connecting protrusion is threadedly connected to the bottom of the steel casing body through the threaded grooves.

[0016] By adopting the above technical solution, the bottom of the extension tube can be spliced ​​with other extension tubes by means of the threaded groove and the threaded engagement of the connecting convex tube, thereby adjusting the length of the pile foundation steel casing.

[0017] The present invention is further configured such that: the inner surfaces of the steel casing body and the bottom of the extension cylinder are both welded with metal sealing rings that are slidably connected to the connecting convex cylinder.

[0018] By adopting the above technical solution, the sealing performance of the steel casings of the pile foundation is improved after they are spliced ​​together, preventing water in the soil from seeping into the pile hole.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. By sliding both ends of the lifting rod into the L-shaped groove, the steel casing body can be lifted upwards using the lifting rod. This facilitates the installation of the pile foundation steel casing, and the lifting rod can be disassembled without affecting the drilling of pile holes inside the steel casing body. It can also be installed on the pile foundation steel casing.

[0021] 2. By embedding the steel casing into the surface of the pile hole for support, and then rotating the rod out of the fixed block, the support block can support the main body of the steel casing. This reduces the risk of the steel casing sinking inside the pile hole and facilitates its subsequent removal.

[0022] 3. By splicing an extension tube at the bottom of the main body of the steel casing, the length of the steel casing can be adjusted according to the depth of the pile hole, ensuring the support effect of the pile hole and improving the practicality of the steel casing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0025] Figure 3 This is a top sectional view of a partial structure of this utility model.

[0026] Reference numerals in the attached drawings: 1. Steel casing body; 2. L-shaped slide groove; 3. Lifting rod; 4. Lifting hole; 5. Limiting groove; 6. Fixing block; 7. Rotating rod; 8. Support block; 9. Threaded shaft; 10. Extension cylinder; 11. Connecting protrusion; 12. Threaded groove; 13. Magnet block; 14. Metal sealing ring. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Example 1:

[0029] refer to Figure 1 , Figure 2 , Figure 3 A hoistable steel casing for pile foundations includes a steel casing body 1. L-shaped grooves 2 are formed on both sides of the interior of the steel casing body 1. A hoisting rod 3 is installed inside the steel casing body 1, with a hoisting hole 4 at the top. The two ends of the hoisting rod 3 are slidably connected to the inner surface of the steel casing body 1 via the L-shaped grooves 2. By sliding the two ends of the hoisting rod 3 into the L-shaped grooves 2, the steel casing body 1 can be lifted upwards by the hoisting rod 3. This facilitates the installation of the steel casing for pile foundations. Furthermore, the hoisting rod 3 can be disassembled without affecting the drilling of pile holes inside the steel casing body 1, and can also be installed on the steel casing for use.

[0030] refer to Figure 1 , Figure 2 The bottom of the steel casing body 1 is provided with an extension cylinder 10, and the top of the extension cylinder 10 is integrally formed with a connecting protrusion 11 that is threaded to the inner surface of the steel casing body 1. By splicing the extension cylinder 10 at the bottom of the steel casing body 1, the length of the pile foundation steel casing can be adjusted according to the pile hole depth, ensuring the support effect on the pile hole and improving the practicality of the pile foundation steel casing.

[0031] refer to Figure 1 The steel casing body 1 has limiting grooves 5 on both sides inside, which are connected to the L-shaped sliding groove 2. During the hoisting process, an upward pulling force is generated, which in turn drives the hoisting rod 3 to slide upward into the interior of the limiting groove 5, which can prevent the hoisting rod 3 from coming out of the interior of the L-shaped sliding groove 2 during the hoisting process and causing it to loosen.

[0032] refer to Figure 2 Both the steel casing body 1 and the extension tube 10 have threaded grooves 12 at their bottoms. The connecting protrusion 11 is threadedly connected to the bottom of the steel casing body 1 through the threaded grooves 12. The bottom of the extension tube 10 can be connected to other extension tubes 10 by means of the threaded engagement between the threaded grooves 12 and the connecting protrusion 11, thereby adjusting the length of the pile foundation steel casing.

[0033] refer to Figure 2 Both the inner surfaces of the steel casing body 1 and the extension tube 10 are welded with metal sealing rings 14 that are slidably connected to the connecting protrusion 11. This improves the sealing performance of the steel casings after they are spliced ​​together, preventing moisture in the soil from seeping into the pile hole.

[0034] Brief description of the usage process: By sliding both ends of the lifting rod 3 into the two L-shaped grooves 2 respectively, and then rotating the lifting rod 3 90 degrees so that both ends of the lifting rod 3 are at the bottom of the limiting groove 5, the sling is then passed through the lifting hole 4, thereby lifting the steel casing body 1. During the lifting process, an upward pulling force is generated, which drives the lifting rod 3 upward into the limiting groove 5, preventing the lifting rod 3 from coming loose from the L-shaped groove 2 during the lifting process. At the same time, after the lifting is completed, the lifting rod 3 can be removed from the L-shaped groove 2, so as not to obstruct the internal space of the L-shaped groove 2, and can also be installed on other pile foundation steel casings, so that the lifting rod 3 can be reused multiple times.

[0035] Example 2:

[0036] refer to Figure 1 , Figure 2 A hoistable steel casing for pile foundations is disclosed. A fixing block 6 is welded to the top surface of the main body 1 of the steel casing. A rotating rod 7 is rotatably connected inside the fixing block 6, and a threaded shaft 9 is threadedly connected inside the rotating rod 7. A support block 8 is welded to the bottom of the threaded shaft 9. By embedding the steel casing into the surface of the pile hole for support, and then rotating the rotating rod 7 out of the fixing block 6, the support block 8 can support the main body 1 of the steel casing. This reduces the risk of the steel casing sinking inside the pile hole and facilitates its subsequent removal.

[0037] refer to Figure 2 Magnet blocks 13 that are attracted to each other are bolted to the side of the support block 8 near the fixed block 6 and inside the fixed block 6. After the rotating rod 7 is rotated and stored inside the fixed block 6, the support block 8 can be fixed inside the magnet blocks 13 by the mutual magnetic attraction of the magnet blocks 13, preventing it from automatically slipping out of the fixed block 6.

[0038] Brief description of the usage process: The steel casing of the pile foundation is embedded in the surface of the pile hole for support. Then, the rotating rod 7 is tilted and rotated out of the fixed block 6. At the same time, the rotating support block 8 drives the threaded shaft 9 to engage with the rotating rod 7, thereby causing the support block 8 to slide forward and contact the foundation around the pile hole. This allows the support block 8 to support the main body 1 of the steel casing, reducing the risk of the main body 1 of the steel casing naturally sinking into the pile hole. If the surface of the pile hole is a loose soil layer, a metal plate can be placed at the bottom of the support block 8 to increase the contact area between the support block 8 and the ground, preventing the support block 8 from sinking into the ground.

[0039] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A hoistable steel casing for pile foundations, comprising a steel casing body (1), characterized in that: The steel casing body (1) has L-shaped grooves (2) on both sides inside. The steel casing body (1) is equipped with a lifting rod (3). The top of the lifting rod (3) has a lifting hole (4). The two ends of the lifting rod (3) are slidably connected on the inner surface of the steel casing body (1) through the L-shaped grooves (2).

2. The hoistable steel casing for pile foundations according to claim 1, characterized in that: A fixing block (6) is welded to the top surface of the steel casing body (1). A rotating rod (7) is rotatably connected inside the fixing block (6). A threaded shaft (9) is threaded inside the rotating rod (7). A support block (8) is welded to the bottom of the threaded shaft (9).

3. The hoistable steel casing for pile foundations according to claim 1, characterized in that: The bottom of the steel casing body (1) is provided with an extension cylinder (10), and the top of the extension cylinder (10) is integrally formed with a connecting protrusion (11) that is threadedly connected to the inner surface of the steel casing body (1).

4. The hoistable steel casing for pile foundations according to claim 1, characterized in that: The steel casing body (1) has limiting grooves (5) on both sides inside, which are connected to the L-shaped sliding groove (2).

5. A hoistable steel casing for pile foundations according to claim 2, characterized in that: The support block (8) is attached to a magnet block (13) that is magnetically attracted to each other on the side near the fixing block (6) and inside the fixing block (6).

6. The hoistable steel casing for pile foundations according to claim 3, characterized in that: The bottom of both the steel casing body (1) and the extension cylinder (10) is provided with threaded grooves (12), and the connecting protrusion (11) is threadedly connected to the bottom of the steel casing body (1) through the threaded grooves (12).

7. A hoistable steel casing for pile foundations according to claim 3, characterized in that: The inner surfaces of the bottom of the steel casing body (1) and the extension cylinder (10) are both welded with metal sealing rings (14) that are slidably connected to the connecting protrusion (11).

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