A long casing wall protection structure for pile foundation dry work hole forming construction

Abstract

The utility model relates to the technical field of civil construction, and this long casing fender structure for pile foundation dry operation hole forming construction, including the casing main part, the casing main part top fixedly connected with the top fixed ring, three countersunk screw holes are uniformly arranged outside top fixed ring, and a plurality of limiting grooves are arranged on the top of top fixed ring, locking grooves are arranged on the bottom of limiting groove, the plug -in ring is fixedly installed in the casing main part bottom, a plurality of locking blocks are fixedly installed outside the bottom of plug -in ring, the utility model discloses the setting of outer wall stiffener and annular stiffener improves the structural strength of casing main part, and the plug -in fixing between plug -in ring and top fixed ring is rotated after plugging, guarantees locking fixed between locking block and locking groove, and the two long casings connected with bolt are fixed after locking, compared with welding fixed, and the installation is more firm, and simple, realizes the repeated use of long casing.

Description

Technical Field

[0001] This utility model belongs to the field of civil engineering construction technology, specifically relating to a long casing wall structure for dry drilling construction of pile foundations. Background Technology

[0002] Using long casing structures for dry pile foundation drilling is an effective way to prevent hole wall collapse, especially suitable for situations with high groundwater levels or loose and unstable soil.

[0003] In dry drilling of pile foundations, due to the depth of the holes, it is usually necessary to splice and vibrate multiple long casing sections to achieve the specified depth of the dry drilling hole. The existing method is to connect adjacent long casing sections by welding. For recyclable long casing sections, welding is troublesome for subsequent recycling and disassembly. Moreover, when there are many connected sections of long casing sections, the welded long casing section at the bottom may fall off during recycling, affecting the smooth recycling process. Utility Model Content

[0004] The purpose of this utility model is to provide a long casing wall structure for dry pile foundation drilling that is simple in structure and reasonably designed in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A long casing wall structure for dry drilling of pile foundation includes a casing body. A top fixing ring is fixedly connected to the top of the casing body. Three countersunk threaded holes are evenly opened on the outside of the top fixing ring. Several limiting grooves are opened on the top of the top fixing ring, and locking grooves are opened at the bottom of the limiting grooves.

[0007] A plug-in ring is fixedly installed at the bottom of the main body of the casing, and several locking blocks are evenly fixedly installed on the bottom of the outer side of the plug-in ring.

[0008] Preferably, a plurality of annular reinforcing ribs are uniformly fixedly installed inside the casing body, and outer wall reinforcing ribs are uniformly installed outside the casing body.

[0009] Preferably, a retaining ring is fixedly installed inside the top fixing ring, and the retaining ring is located below the locking groove.

[0010] Preferably, the bottom of the outer wall reinforcing rib is chamfered, and the outer wall reinforcing rib is welded to the main body of the casing.

[0011] Preferably, the top fixing ring and the insertion ring between the two upper and lower connected casing bodies are movably inserted and fixed, and the two upper and lower connected casing bodies are fixedly connected by bolts.

[0012] Preferably, the outer surface of the insertion ring is provided with a plurality of threaded through holes.

[0013] The beneficial effects of this utility model are as follows: By setting the outer wall reinforcing ribs and annular reinforcing ribs, the structural strength of the main body of the protective sleeve is improved. Furthermore, the insertion ring and the top fixing ring are fixed by insertion. After insertion, a certain angle is rotated to ensure that the locking block and the locking groove are locked and fixed. After locking, the two long protective sleeves connected to each other are fixed with bolts. Compared with welding, the installation is more secure and effectively prevents detachment. Moreover, the installation and disassembly are simple, and the long protective sleeve can be reused. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembled structure of the long protective sleeve of this utility model;

[0015] Figure 2 This is an exploded view of this utility model;

[0016] Figure 3 This is a three-dimensional view of the overall structure of this utility model;

[0017] Figure 4 This is a partial sectional view of the overall structure of this utility model.

[0018] In the diagram: 1. Main body of the casing; 2. Outer wall reinforcing rib; 3. Top fixing ring; 4. Limiting groove; 5. Bolt; 6. Retaining ring; 7. Countersunk threaded hole; 8. Threaded through hole; 9. Insertion ring; 10. Locking block; 11. Locking groove; 12. Annular reinforcing rib. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example

[0021] Please see Figure 1 , Figure 3 and Figure 4A long casing wall structure for dry drilling of pile foundations includes a casing body 1. A top fixing ring 3 is fixedly connected to the top of the casing body 1. Three countersunk threaded holes 7 are evenly opened on the outside of the top fixing ring 3. Several limiting grooves 4 are opened on the top of the top fixing ring 3. Locking grooves 11 are opened at the bottom of the limiting grooves 4. A plug ring 9 is fixedly installed at the bottom of the plug ring 9. Several locking blocks 10 are evenly fixedly installed on the bottom of the plug ring 9. Several annular reinforcing ribs 12 are evenly fixedly installed inside the casing body 1. Outer wall reinforcing ribs 2 are evenly installed on the outside of the casing body 1. A retaining ring 6 is fixedly installed inside the top fixing ring 3. The retaining ring 6 is located below the locking groove 11. The bottom of the outer wall reinforcing rib 2 is chamfered. The outer wall reinforcing rib 2 is welded to the casing body 1.

[0022] In use, the casing body 1 is used to support the inner wall of the pile hole formed by dry drilling of the pile foundation. The top fixing ring 3 is used to enhance the structural strength of the top of the casing body 1. The locking groove 11 is used to lock with the locking block 10. The plug ring 9 is used to directly and movably plug and fix with the top fixing ring 3. The annular reinforcing rib 12 and the outer wall reinforcing rib 2 are used to enhance the overall structural strength of the casing body 1. The chamfer on the outer wall reinforcing rib 2 facilitates the insertion of the outer wall reinforcing rib 2 into the ground.

[0023] Please see Figure 1 , Figure 2 and Figure 3 The top fixing ring 3 and the plug ring 9 between the two upper and lower connected protective cylinder bodies 1 are movably plugged and fixed, and the two upper and lower connected protective cylinder bodies 1 are fixedly connected by bolts 5. Several threaded through holes 8 are evenly opened on the outside of the plug ring 9.

[0024] When assembling the upper and lower casing bodies 1, insert the insertion ring 9 on the top casing body 1 into the top fixing ring 3 on the bottom casing body 1, and then use bolts 5 to fix it with threads.

[0025] It should be noted that this long casing wall structure for dry pile foundation drilling is used by first using a vibratory sinker to vibrate and insert the casing body 1 into the construction ground. Then, a new long casing is hoisted up by a crane. Next, the locking block 10 at the bottom of the new casing body 1 is aligned with the lower limiting groove 4 and inserted until the bottom of the insertion ring 9 is in contact with the top of the lower retaining ring 6. At this time, the upper casing body 1 is rotated, which simultaneously drives the insertion ring 9 and the locking block 10 on it to rotate until the locking block 10 rotates into the locking groove 11. As the insertion ring 9 rotates, the threaded through hole 8 in the upper long casing coincides with the countersunk threaded hole 7 in the lower long casing. At this time, the upper and lower long casings are threadedly fixed together using bolts 5, realizing the assembly between the upper and lower long casings. Compared with welding fixation, it is more robust and reliable, and is easy to disassemble and reuse.

[0026] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A long casing wall structure for dry drilling construction of pile foundations, comprising a casing body (1), characterized in that: The top of the casing body (1) is fixedly connected to a top fixing ring (3). The top fixing ring (3) has three countersunk threaded holes (7) evenly opened on the outside. The top of the top fixing ring (3) has several limiting grooves (4) and the bottom of the limiting grooves (4) has a locking groove (11). The bottom of the casing body (1) is fixedly installed with a plug ring (9), and several locking blocks (10) are evenly fixedly installed on the bottom of the plug ring (9).

2. The long casing wall structure for dry drilling construction of pile foundations according to claim 1, characterized in that: The casing body (1) has several annular reinforcing ribs (12) evenly fixed inside, and the casing body (1) has outer wall reinforcing ribs (2) evenly installed outside.

3. The long casing wall structure for dry drilling construction of pile foundations according to claim 1, characterized in that: The top fixing ring (3) has a retaining ring (6) fixedly installed inside, and the retaining ring (6) is located below the locking groove (11).

4. The long casing wall structure for dry drilling construction of pile foundations according to claim 2, characterized in that: The outer wall reinforcing rib (2) has a chamfer at the bottom, and the outer wall reinforcing rib (2) is welded to the casing body (1).

5. The long casing wall structure for dry drilling construction of pile foundations according to claim 1, characterized in that: The top fixing ring (3) and the insertion ring (9) between the two upper and lower connected casing bodies (1) are movably inserted and fixed, and the two upper and lower connected casing bodies (1) are fixedly connected by bolts (5).

6. The long casing wall structure for dry drilling construction of pile foundations according to claim 1, characterized in that: The plug ring (9) has several threaded through holes (8) evenly distributed on its exterior.

Images