Cast-in-situ bored pile casing

Abstract

The utility model provides a cast-in-situ bored pile casing which effectively solves the problems that an existing casing cannot radically treat the downward moving phenomenon, and the posture of the casing cannot be adjusted through self-adjustment. According to the technical scheme for solving the problems, the device comprises a pile casing, an annular plate is arranged on the outer side of the upper end of the pile casing in a sleeving mode, a limiting block is arranged at the upper end of the pile casing, a plurality of hydraulic cylinders which are evenly distributed in the circumferential direction are arranged at the lower end of the annular plate, and piston rods in the hydraulic cylinders are hinged to the annular plate; a plurality of rib plates are arranged between the annular protrusion and the bottom plate and correspond to the hydraulic cylinders in a one-to-one mode, and bases of the hydraulic cylinders are installed on the rib plates. The device is ingenious in structure, after the pile casing moves downwards, the pile casing can restore to the original position through flexible adjustment of the device, disassembly and assembly are easy and convenient, and the height of the pile casing extending out of the ground can be flexibly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of bored cast-in-place pile construction, in particular to a bored cast-in-place pile casing. Background Art

[0002] During the construction of bored cast-in-place piles, steel casings are required for positioning. The existing casings are made of 10mm thick steel pipes. During use, the casing will move downward due to the drilling of the drill bit and the pouring of concrete during the drilling process, which can easily lead to a skewed hole. In the prior art, patent documents CN212801511U disclose a casing for bored cast-in-place piles and CN216130113U disclose a casing for bored cast-in-place piles. Both of them are annular structures clamped on the outer side of the upper end of the casing to resist the sinking of the casing. However, during use, since the edge of the casing is mostly soil, the casing will still move downward after encountering rainfall and water accumulation. When the height of the casing exposed to the ground is insufficient, the debris around the pile hole can easily fall into the pile hole, so the prior art still cannot fundamentally solve the problem of casing decline.

[0003] A bored pile casing is provided. After the casing moves downward, the casing can be flexibly adjusted to restore the casing to its original position. The disassembly and assembly are simple and convenient, and the height of the casing extending out of the ground can be flexibly adjusted. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a bored pile casing, which effectively solves the problem that the prior casing cannot completely solve the downward movement phenomenon and cannot adjust the casing posture by self-adjustment.

[0005] The technical solution is to include a casing, an annular plate is sleeved on the outer side of the upper end of the casing, a limit block is arranged on the upper end of the casing, a plurality of hydraulic cylinders are evenly distributed in a circle on the lower end of the annular plate, a piston rod in the hydraulic cylinder is hinged to the annular plate, an annular bottom plate is sleeved on the outer side of the casing, an annular protrusion is arranged on the upper end surface of the bottom plate, a plurality of ribs are arranged between the annular protrusion and the bottom plate, the ribs correspond to the hydraulic cylinders one by one, and the base of the hydraulic cylinder is installed on the ribs.

[0006] Furthermore, the limit block is a screw, and threaded holes corresponding to the screws are arranged on the side wall of the casing, and the screws are screwed into the threaded holes.

[0007] Furthermore, a plug rod is hinged on the rib plate, a cylinder is fixed at the bottom of the cylinder body of the hydraulic cylinder, and the plug rod is inserted in the cylinder.

[0008] The utility model has an ingenious structure, and after the casing moves downward, it can flexibly adjust itself to restore the casing to its original position, and the disassembly and assembly are simple and convenient, and the height of the casing protruding from the ground can be flexibly adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a front sectional view of the utility model.

[0010] Figure 2 for Figure 1 Middle AA section view.

[0011] Figure 3 It is a schematic diagram of the disassembly of the utility model.

[0012] Figure 4 It is a top view of the bottom plate and the annular protrusion, rib plate and insert rod thereon in the utility model. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0014] Depend on Figures 1 to 4 The utility model includes a casing 1, an annular plate 2 is sleeved on the outer side of the upper end of the casing 1, a limiting block 3 is arranged on the upper end of the casing 1, a plurality of hydraulic cylinders 4 are evenly distributed in a circle at the lower end of the annular plate 2, a piston rod in the hydraulic cylinder 4 is hinged to the annular plate 2, an annular bottom plate 5 is sleeved on the outer side of the casing 1, an annular protrusion 6 is arranged on the upper end surface of the bottom plate 5, a plurality of ribs 7 are arranged between the annular protrusion 6 and the bottom plate 5, the ribs 7 correspond to the hydraulic cylinders 4 one by one, and the base of the hydraulic cylinder 4 is installed on the ribs 7.

[0015] In order to facilitate the removal of the casing 1, the limit block 3 is a screw, and threaded holes corresponding to the screws are arranged on the side wall of the casing 1, and the screws are screwed into the threaded holes.

[0016] In order to facilitate disassembly, a plug rod 8 is hinged on the rib plate 7 , a cylinder 9 is fixed at the bottom of the cylinder body of the hydraulic cylinder 4 , and the plug rod 8 is inserted into the cylinder 9 .

[0017] It is worth noting that the hydraulic cylinder 4 in this solution can also be replaced by an electric cylinder; in order to ensure the tightening effect, a rubber pad can be placed in the cylinder 9.

[0018] When in use, place the bottom plate 5 in the device at the positioning position, then place the casing 1 in the bottom plate 5 from top to bottom, then put the annular plate 2 on the casing, and match the cylinder 9 at the bottom of the hydraulic cylinder 4 with the corresponding plug rod 8, and finally install multiple limit blocks 3 on the casing 1, adjust the overall length of the hydraulic cylinder 4, preliminarily complete the height positioning, and finally press the casing 1 downward. When the limit blocks 3 on the casing 1 contact the annular plate 2, stop pressing downward.

[0019] When the casing 1 and the entire device move downward, the posture of the casing 1 can be adjusted by adjusting the lengths of the multiple hydraulic cylinders 4.

[0020] The utility model has an ingenious structure. After the casing 1 moves downward, the casing 1 can be flexibly adjusted to restore to its original position. The disassembly and assembly are simple and convenient, and the height of the casing 1 extending out of the ground can be flexibly adjusted.

Claims

1. A bored pile casing, characterized in that: The invention comprises a casing (1), wherein an annular plate (2) is sleeved on the outer side of the upper end of the casing (1), a limit block (3) is arranged on the upper end of the casing (1), a plurality of hydraulic cylinders (4) are arranged at the lower end of the annular plate (2) and are evenly distributed in a circumference, a piston rod in the hydraulic cylinder (4) is hinged to the annular plate (2), an annular bottom plate (5) is sleeved on the outer side of the casing (1), an annular protrusion (6) is arranged on the upper end surface of the bottom plate (5), a plurality of ribs (7) are arranged between the annular protrusion (6) and the bottom plate (5), the ribs (7) correspond to the hydraulic cylinders (4) one by one, and the base of the hydraulic cylinder (4) is mounted on the ribs (7).

2. A bored pile casing according to claim 1, characterized in that: The limit block (3) is a screw, and threaded holes corresponding to the screws are arranged on the side wall of the casing (1), and the screws are screwed into the threaded holes.

3. The bored pile casing according to claim 1, characterized in that: The rib plate (7) is hingedly provided with an insertion rod (8), a cylinder (9) is fixed at the bottom of the cylinder body of the hydraulic cylinder (4), and the insertion rod (8) is inserted into the cylinder (9).

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