Soft stratum drilling retaining wall stabilizing sleeve

Abstract

The utility model relates to the technical field of drilling wall protection, and discloses a soft stratum drilling wall protection stabilizing sleeve which comprises a first sleeve body, a connecting assembly is movably connected to the inner wall of the upper end of the first sleeve body in a clamped mode, and the upper end of the connecting assembly extends to the position above the first sleeve body. A second sleeve body is movably clamped to the outer wall of the upper end of the connecting assembly, and the lower end of the connecting assembly is connected with the upper end of the first sleeve body through a first fastening bolt. Through cooperation of the first sleeve body, the connecting assembly, the second sleeve body, the first fastening bolt and the second fastening bolt, the connecting mode that the first sleeve body and the connecting assembly are connected through the first fastening bolt is adopted, and then the connecting mode that the second sleeve body and the connecting assembly are connected through the second fastening bolt is adopted; the first sleeve body, the connecting assembly and the second sleeve body can be detached, and therefore the assembling length of the sleeve can be adjusted according to the actual hole channel depth.

Description

Technical Field

[0001] This utility model relates to the field of borehole wall protection technology, specifically a borehole wall stabilizing sleeve for soft formations. Background Technology

[0002] The backfilled soil foundation has a loose structure and complex composition, containing loose materials such as quarry rock and concrete. The pile foundation construction process presents numerous problems, including easy borehole collapse and difficulties in equipment drilling, necessitating the implementation of wall protection measures. Conventional wall protection methods include mud slurry wall protection or steel casing wall protection.

[0003] However, due to varying actual construction needs, the drilling depth must be adapted to the specific requirements, resulting in boreholes of different depths. The fixed length of the sleeve cannot be used for boreholes of different depths. When the sleeve length is less than the borehole depth, it cannot effectively protect the borehole wall. When the sleeve length is greater than the borehole depth, a portion of the sleeve will be exposed above the ground surface. In this case, the fixed length of the sleeve reduces its applicability and thus decreases its flexibility in practical use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stabilizing sleeve for borehole wall protection in soft formations. It has the advantages of adjustable sleeve length according to different borehole depths, simplified assembly and disassembly steps for multiple sleeves, and improved sleeve practicality, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a drilling wall stabilizing sleeve for soft formations, comprising a first sleeve body, a connecting component movably engaged on the inner wall of the upper end of the first sleeve body, and the upper end of the connecting component extending above the first sleeve body; a second sleeve body movably engaged on the outer wall of the upper end of the connecting component; the lower end of the connecting component being connected to the upper end of the first sleeve body via a first fastening bolt; the lower end of the second sleeve body being connected to the upper end of the connecting component via a second fastening bolt; a second arc-shaped groove being provided at both the upper and lower ends of the first sleeve body; the first sleeve body being movably engaged with the connecting component via the second arc-shaped groove at the upper end; and a first arc-shaped groove being provided at both the upper and lower ends of the second sleeve body; the first sleeve body being movably engaged with the connecting component via the first arc-shaped groove at the lower end.

[0006] Preferably, the connecting assembly includes a connecting pipe, an upper end plate, and a lower end plate. The upper end of the connecting pipe is fixedly connected to the lower end of the upper end plate. The outer wall of the upper end plate is movably engaged with the inner wall of the first arc-shaped groove. The end of the connecting pipe away from the upper end plate is fixedly connected to the upper end of the lower end plate. The outer wall of the lower end plate is movably engaged with the inner wall of the second arc-shaped groove.

[0007] Preferably, the outer walls of the upper and lower end plates are evenly distributed with external protrusions, the inner walls of the upper and lower end plates are evenly distributed with internal protrusions, and the upper and lower ends of the upper and lower end plates are respectively provided with limiting grooves.

[0008] Preferably, the outer walls of the upper and lower ends of the first sleeve body are respectively provided with first threaded holes, and the outer wall of the first fastening bolt is threaded through the inner wall of the first threaded hole, and the first threaded hole is connected to the lower end plate through the first fastening bolt.

[0009] Preferably, the outer walls of the upper and lower ends of the second sleeve body are evenly provided with second threaded holes, and the inner wall of the second threaded hole is threadedly connected to the outer wall of the second fastening bolt. The second threaded hole is connected to the connecting pipe through the second fastening bolt.

[0010] Preferably, the inner walls of the first arc-shaped groove and the second arc-shaped groove are evenly distributed with limiting rods, and the outer walls of the limiting rods are movably sleeved with the inner walls of the limiting grooves. The outer side of the first arc-shaped groove is evenly provided with an outer locking groove, and the inner wall of the outer locking groove is movably locked with the outer wall of the outer protrusion. The inner side of the first arc-shaped groove is evenly provided with an inner locking groove, and the inner wall of the inner locking groove is movably locked with the outer wall of the inner protrusion.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model utilizes the cooperation between the first sleeve body, the connecting component, the second sleeve body, the first fastening bolt, and the second fastening bolt. The first fastening bolt connects the first sleeve body to the connecting component, and the second fastening bolt connects the second sleeve body to the connecting component. This allows the first sleeve body, the connecting component, and the second sleeve body to be disassembled, thereby enabling the assembly length of the sleeve to be adjusted according to the actual hole depth.

[0013] This utility model, through the cooperation between the first sleeve body, the connecting component, the second sleeve body, the inner protrusion, the outer protrusion, and the limiting rod, utilizes the connection method of the inner protrusion engaging with the inner groove, the connection method of the outer protrusion engaging with the outer groove, and the connection method of the limiting rod engaging with the limiting groove, to restrict the installation position of the connecting component on the first sleeve body and the second sleeve body, thereby simplifying the installation steps between the first sleeve body, the connecting component, and the second sleeve body. Attached Figure Description

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

[0015] Figure 2 This is a top view of the second sleeve body of this utility model;

[0016] Figure 3This is a cross-sectional view of the first sleeve body of this utility model;

[0017] Figure 4 This is a cross-sectional view of the connecting component of this utility model;

[0018] Figure 5 This is a top view of the upper plate of this utility model;

[0019] Figure 6 This utility model Figure 3 A magnified view of point A.

[0020] In the figure: 1. First sleeve body; 2. Connecting assembly; 201. Connecting pipe; 202. Upper end plate; 203. Lower end plate; 3. Second sleeve body; 4. First fastening bolt; 5. Second fastening bolt; 6. First arc groove; 7. Second arc groove; 8. First threaded hole; 9. Second threaded hole; 10. Limiting rod; 11. Outer groove; 12. Inner groove; 13. Inner protrusion; 14. Outer protrusion; 15. Limiting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 and Figure 4A drilling wall stabilization sleeve for soft formations includes a first sleeve body 1. A connecting component 2 is movably engaged with the inner wall of the upper end of the first sleeve body 1, and the upper end of the connecting component 2 extends above the first sleeve body 1. The connecting component 2 connects the first sleeve body 1 and a second sleeve body 3, allowing the actual length of the sleeve to be varied. The second sleeve body 3 is movably engaged with the outer wall of the upper end of the connecting component 2. The lower end of the connecting component 2 is connected to the upper end of the first sleeve body 1 via a first fastening bolt 4. The first fastening bolt 4 connects the connecting component 2 to the first sleeve body 1. The lower end of the second sleeve body 3 is connected to the upper end of the first sleeve body 1 via a first fastening bolt 4. The second fastening bolt 5 is connected to the upper end of the connecting component 2. The installation of the second fastening bolt 5 serves to connect the connecting component 2 and the second sleeve body 3. The upper and lower ends of the first sleeve body 1 are provided with second arc-shaped grooves 7. The opening of the second arc-shaped grooves 7 provides space for the connecting component 2 to be installed on the first sleeve body 1. The first sleeve body 1 is movably engaged with the connecting component 2 through the second arc-shaped groove 7 at the upper end. The upper and lower ends of the second sleeve body 3 are provided with first arc-shaped grooves 6. The opening of the first arc-shaped grooves 6 provides space for the connecting component 2 to be installed on the second sleeve body 3. The first sleeve body 1 is movably engaged with the connecting component 2 through the first arc-shaped groove 6 at the lower end.

[0023] The connecting assembly 2 includes a connecting pipe 201, an upper end plate 202, and a lower end plate 203. The upper end of the connecting pipe 201 is fixedly connected to the lower end of the upper end plate 202. The connecting pipe 201 provides support and a platform for the installation of the upper end plate 202 and the lower end plate 203. The outer wall of the upper end plate 202 is movably engaged with the inner wall of the first arc-shaped groove 6. The end of the connecting pipe 201 away from the upper end plate 202 is fixedly connected to the upper end of the lower end plate 203. The outer wall of the lower end plate 203 is movably engaged with the inner wall of the second arc-shaped groove 7. The lower end plate 203 is engaged inside the second arc-shaped groove 7, thereby realizing the connection between the connecting assembly 2 and the first sleeve body 1.

[0024] Please see Figure 2 and Figure 6 The outer walls of the upper end plate 202 and the lower end plate 203 are evenly distributed with external protrusions 14, and the inner walls of the upper end plate 202 and the lower end plate 203 are evenly distributed with internal protrusions 13. The upper end plate 202 and the lower end plate 203 provide support and platform for the installation of external protrusions 14 and internal protrusions 13, respectively. Limiting grooves 15 are respectively opened at the upper and lower ends of the upper end plate 202 and the lower end plate 203.

[0025] The outer walls of the upper and lower ends of the first sleeve body 1 are respectively provided with first threaded holes 8, and the inner wall of the first threaded hole 8 is threaded to the outer wall of the first fastening bolt 4. The opening of the first threaded hole 8 provides space for the installation of the first fastening bolt 4. The first threaded hole 8 is connected to the lower end plate 203 through the first fastening bolt 4.

[0026] Please see Figure 3 and Figure 5 The outer walls of the upper and lower ends of the second sleeve body 3 are evenly provided with second threaded holes 9, and the inner wall of the second threaded hole 9 is threadedly connected to the outer wall of the second fastening bolt 5. The opening of the second threaded hole 9 provides space for the installation of the second fastening bolt 5. The second threaded hole 9 is connected to the connecting pipe 201 through the second fastening bolt 5.

[0027] Limiting rods 10 are evenly distributed on the inner walls of the first arc-shaped groove 6 and the second arc-shaped groove 7, and the outer wall of the limiting rod 10 is movably sleeved with the inner wall of the limiting groove 15. The limiting rod 10 is inserted into the inside of the limiting groove 15, which restricts the connection position between the arc-shaped groove and the connecting component 2. The outer side of the first arc-shaped groove 6 is evenly provided with an outer slot 11, and the inner wall of the outer slot 11 is movably engaged with the outer wall of the outer protrusion 14. The opening of the outer slot 11 provides space for the installation of the outer protrusion 14. The inner side of the first arc-shaped groove 6 is evenly provided with an inner slot 12, and the inner wall of the inner slot 12 is movably engaged with the outer wall of the inner protrusion 13. The opening of the inner slot 12 provides space for the installation of the inner protrusion 13.

[0028] Working principle: In use, firstly, assemble a sleeve that matches the actual depth of the hole. Insert the lower end plate 203 into the second arc-shaped groove 7. When the lower end plate 203 is movably sleeved with the second arc-shaped groove 7, the inner protrusion 13 on the inner side of the lower end plate 203 engages with the inner groove 12, and the outer protrusion 14 on the outer side of the lower end plate 203 engages with the outer groove 11. The limiting rod 10 in the first arc-shaped groove 6 is inserted into the limiting groove 15 at the bottom of the lower end plate 203, thus fixing the lower end plate 203 in the second arc-shaped groove 7 at the upper end. Then, use the first fastening bolt 4 to connect the lower end plate 203 to the first threaded hole 8, thus connecting the connecting assembly 2 and the first sleeve body 1 with the first fastening bolt 4. Finally, install the second sleeve body 3 on the upper end of the connecting assembly 2. The lower end of the second arc-shaped groove 7 is fitted onto the outer wall of the upper end plate 202. The outer protrusion 14 on the outer side of the upper end plate 202 is engaged with the outer groove 11 on the second arc-shaped groove 7. The inner protrusion 13 on the inner side of the upper end plate 202 is engaged with the inner groove 12 on the second arc-shaped groove 7. The limiting rod 10 on the second arc-shaped groove 7 is inserted into the limiting groove 15 at the upper end of the upper end plate 202. The upper end plate 202 can then be installed at the bottom of the second sleeve body 3. The second fastening bolt 5 is then used to connect the connecting component 2 and the second sleeve body 3. Finally, the connection between the first sleeve body 1, the connecting component 2, and the second sleeve body 3 is completed. Several first sleeve bodies 1, connecting components 2, and second sleeve bodies 3 are installed in sequence according to the above operation steps, so that the actual length of the sleeve can be adjusted according to the actual depth of the channel.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A borehole wall stabilising sleeve for use in soft ground drilling comprising a first sleeve body (1) characterised in that: The inner wall of the upper end of the first sleeve body (1) is movably engaged with a connecting component (2), and the upper end of the connecting component (2) extends above the first sleeve body (1). The outer wall of the upper end of the connecting component (2) is movably engaged with a second sleeve body (3). The lower end of the connecting component (2) is connected to the upper end of the first sleeve body (1) through a first fastening bolt (4). The lower end of the second sleeve body (3) is connected to the upper end of the connecting component (2) through a second fastening bolt (5). The upper and lower ends of the first sleeve body (1) are provided with second arc-shaped grooves (7). The first sleeve body (1) is movably engaged with the connecting component (2) through the second arc-shaped groove (7) at the upper end. The upper and lower ends of the second sleeve body (3) are provided with first arc-shaped grooves (6). The first sleeve body (1) is movably engaged with the connecting component (2) through the first arc-shaped groove (6) at the lower end.

2. A borehole wall stabilising sleeve for use in soft ground drilling according to claim 1, characterised in that: The connecting assembly (2) includes a connecting pipe (201), an upper end plate (202) and a lower end plate (203). The upper end of the connecting pipe (201) is fixedly connected to the lower end of the upper end plate (202). The outer wall of the upper end plate (202) is movably engaged with the inner wall of the first arc groove (6). The end of the connecting pipe (201) away from the upper end plate (202) is fixedly connected to the upper end of the lower end plate (203). The outer wall of the lower end plate (203) is movably engaged with the inner wall of the second arc groove (7).

3. A soft ground borehole lining stabilising sleeve according to claim 2, wherein: The outer walls of the upper end plate (202) and the lower end plate (203) are evenly distributed with external protrusions (14), and the inner walls of the upper end plate (202) and the lower end plate (203) are evenly distributed with internal protrusions (13). Limiting grooves (15) are respectively opened at the upper and lower ends of the upper end plate (202) and the lower end plate (203).

4. A soft ground borehole lining stabilising sleeve according to claim 2, wherein: The outer walls of the upper and lower ends of the first sleeve body (1) are respectively provided with first threaded holes (8), and the outer wall of the first fastening bolt (4) of the inner wall of the first threaded hole (8) is threadedly connected. The first threaded hole (8) is connected to the lower end plate (203) through the first fastening bolt (4).

5. A drilling wall stabilizing sleeve for soft formations according to claim 2, characterized in that: The second sleeve body (3) has a second threaded hole (9) evenly opened on the outer wall at both ends. The inner wall of the second threaded hole (9) is threadedly connected to the outer wall of the second fastening bolt (5). The second threaded hole (9) is connected to the connecting pipe (201) through the second fastening bolt (5).

6. A soft ground borehole wall stabilising sleeve according to claim 3, characterised in that: Limiting rods (10) are evenly distributed on the inner walls of the first arc groove (6) and the second arc groove (7), and the outer wall of the limiting rod (10) is movably connected to the inner wall of the limiting groove (15). An outer slot (11) is evenly opened on the outer side of the first arc groove (6), and the inner wall of the outer slot (11) is movably connected to the outer wall of the outer protrusion (14). An inner slot (12) is evenly opened on the inner side of the first arc groove (6), and the inner wall of the inner slot (12) is movably connected to the outer wall of the inner protrusion (13).

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