Long pile casing for rotary excavating and drilling combined construction

Abstract

The utility model provides a long pile casing for rotary drilling combined construction, which comprises a plurality of groups of pile casing main bodies, connecting sleeves are arranged at the tops of the pile casing main bodies, one group of pile casing main bodies are clamped at the bottom of the other group of pile casing main bodies through the connecting sleeves, and the two groups of pile casing main bodies are detachably connected; a reinforcing ring is arranged between the two pile casing bodies, a connecting groove is formed in the bottom of each pile casing body, the connecting sleeve is sleeved with the reinforcing ring, and one end of the reinforcing ring is clamped in the connecting groove; a mounting head is arranged above the pile casing main body, one end of the mounting head sleeves the connecting sleeve, and the other end of the mounting head is connected with the rotary drilling rig. The long pile casing is arranged in a drill hole in a penetrating mode through the pile casing body, the surface of the long pile casing makes contact with the inner wall of the drill hole, lateral pressure applied by soil around the drill hole can be effectively resisted, hole wall collapse can be forcefully prevented in an area where the soil is soft, and stability and safety of the drill hole are guaranteed; and meanwhile, the pile casing main bodies are detachably connected, so that the pile casing main bodies can be increased according to the depth of a drill hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary drilling, and more specifically, particularly relates to a long casing for combined rotary drilling construction. Background Art

[0002] In infrastructure construction, rotary drilling rigs are often used for pile foundation construction, which can quickly drill high-quality pile holes in various strata and ensure the stability of bridge piers. However, when conducting rotary drilling operations in some unstable areas, such as soft soil areas, relying solely on the drilling ability of the rotary drilling rig itself cannot guarantee the stability and safety of the drilling holes, and it is easy to cause the hole wall to collapse extremely easily during drilling, affecting the drilling quality and even resulting in the failure of the entire pile foundation construction. In order to ensure the smooth progress of rotary drilling construction, at the same time, to ensure the verticality and stability of the pile holes, improve the hole-forming quality, and effectively cope with complex geological conditions, a long casing for combined rotary drilling construction is required. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a long casing for combined rotary drilling construction to solve the technical problems that in the prior art, when operating in soft soil areas, the drilling stability and safety cannot be guaranteed by the drilling ability of the rotary drilling rig itself, and it is easy to cause the hole wall to collapse extremely easily during drilling.

[0004] The purpose and efficacy of the long casing for combined rotary drilling construction of the utility model are achieved by the following specific technical means:

[0005] A long casing for combined rotary drilling construction includes multiple casing bodies. A connecting sleeve is arranged at the top of the casing body. One of the casing bodies is clamped at the bottom of another casing body through the connecting sleeve, and the two casing bodies are detachably connected. A reinforcing ring is arranged between the two casing bodies. A connecting groove is formed at the bottom of the casing body. The reinforcing ring is sleeved on the connecting sleeve and one end is clamped in the connecting groove. An installation head is arranged above the casing body. One end of the installation head is sleeved on the connecting sleeve and the other end is connected to the rotary drilling rig.

[0006] According to a preferred embodiment, multiple first limiting blocks are arranged at the top of the casing body. First limiting grooves corresponding to the first limiting blocks are formed at the bottom of the casing body and at the installation head. The first limiting blocks are clamped in the first limiting grooves. Multiple first connecting through holes are formed in the casing body, the connecting sleeve, and the reinforcing ring, and first connecting bolts are inserted into the first connecting through holes.

[0007] According to a preferred embodiment, a plurality of groups of second limit blocks are arranged on the top of the protective tube body, a plurality of groups of second limit grooves are provided on the reinforcement ring, and the second limit blocks are clamped in the second limit grooves; a plurality of groups of second connecting through holes are provided on the protective tube body, the connecting sleeve and the reinforcement ring, a plurality of groups of connecting clamping grooves are provided on the protective tube body, connecting plates are clamped in the connecting clamping grooves, a plurality of groups of second connecting bolts are provided on the connecting plates, and the second connecting bolts are passed through the second connecting through holes.

[0008] According to a preferred embodiment, the mounting head is provided with a mounting sleeve corresponding to the first connecting through hole, and the mounting bolt is penetrated through the mounting sleeve and the first connecting through hole.

[0009] According to a preferred embodiment, both the mounting sleeve and the mounting bolt are provided with limit holes, and the limit pin is inserted into the limit hole.

[0010] According to a preferred embodiment, the casing body is made of steel, and the surface of the casing body is also coated with an epoxy coating.

[0011] According to a preferred embodiment, a plurality of groups of reinforcing ribs are arranged in the casing body.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. When drilling, the casing body is inserted into the borehole and contacts the inner wall of the borehole, forming an outward tension, which can effectively resist the lateral pressure of the soil around the borehole and prevent the hole wall from collapsing. The first limit block on the top of the casing body is stuck in the first limit groove corresponding to the bottom, and the casing body is connected to the connecting sleeve and the reinforcement ring through the first connecting bolt inserted in the first connecting through hole. This multi-directional limit and connection method further enhances the integrity between the casing bodies and ensures the stability of the connection between the two groups of casing bodies. The number of casing bodies can be increased or decreased according to the drilling requirements. At the same time, it can also withstand various external forces during drilling in soft soil areas to ensure that the soil around the borehole will not flow into the hole due to the instability of the casing and cause the hole wall to collapse.

[0014] 2. One end of the mounting head is sleeved on the connecting sleeve, and the other end is connected to the rotary drilling rig. The mounting head is provided with a mounting sleeve corresponding to the first connecting through hole, and the mounting bolt is passed through the mounting sleeve and the first connecting through hole. At the same time, the mounting sleeve and the mounting bolt are provided with limit holes, and the limit pin is passed through the limit hole. This ensures a stable connection between the long casing body and the rotary drilling rig. When operating in soft soil areas, the drilling action of the drilling rig is more complicated. This stable connection can ensure that the casing body moves accurately with the operation of the drilling rig, avoiding safety issues such as drilling deviation or hole wall collapse caused by unstable connection between the casing body and the drilling rig.

[0015] 3. The casing body is made of steel, with high strength and can withstand large external forces. In soft soil areas, such high-strength casings can effectively resist the extrusion of the soft soil on the hole wall. Moreover, multiple groups of reinforcing ribs are arranged inside the casing body, and the reinforcing ribs further improve the overall strength of the casing. In addition, the surface of the casing body is coated with an epoxy coating, which can prevent the casing from being eroded by the moisture and possible corrosive substances in the soft soil, extend the service life of the casing, ensure that the casing can normally play the role of protecting the hole wall during the entire drilling process, and thus guarantee the safety of the drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural schematic diagram after the assembly of the present utility model;

[0017] Figure 2 is the structural schematic diagram after the disassembly of two groups of casing bodies;

[0018] Figure 3 is the structural schematic diagram after the disassembly of the mounting head and the casing body;

[0019] Figure 4 is Figure 3 the partial enlarged view of area a in

[0020] Figure 5 is the sectional view of the casing body.

[0021] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows:

[0022] 11. Casing body; 12. Connecting sleeve; 13. Connecting groove; 14. First limiting block; 15. First limiting groove; 16. Second limiting block; 17. Reinforcing rib; 21. Reinforcing ring; 22. First connecting through hole; 23. First connecting bolt; 24. Second limiting groove; 25. Second connecting through hole; 26. Connecting clamping groove; 27. Connecting plate; 28. Second connecting bolt; 31. Mounting head; 32. Mounting sleeve; 33. Mounting bolt; 34. Limiting hole; 35. Limiting pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the technical solutions of the present utility model, but cannot be used to limit the protection scope of the present utility model.

[0024] Embodiment:

[0025] As Figures 1 to 5As shown, the utility model provides a long casing for rotary drilling combined construction, including multiple groups of casing bodies 11, and a connecting sleeve 12 is arranged on the top of the casing body 11, so that one group of casing bodies 11 can be clamped on the bottom of another group of casing bodies 11 through the connecting sleeve 12, thereby realizing the detachable connection of the two groups of casing bodies 11, so that during the construction process, the number of casing bodies 11 can be increased or decreased according to the use requirements. A reinforcement ring 21 is also arranged between the two groups of casing bodies 11. In order to make the reinforcement ring 21 play a role firmly, a connecting groove 13 is opened at the bottom of the casing body 11. After the reinforcement ring 21 is sleeved on the connecting sleeve 12, one end of the reinforcement ring 21 can be clamped in the connecting groove 13, which can enhance the overall stability of the casing, so that the long casing can still maintain good structural integrity in a complex construction environment, especially when subjected to a large external force. At the same time, a mounting head 31 is also provided above the casing body 11, one end of the mounting head 31 is sleeved on the connecting sleeve 12, and the other end is connected to the rotary drilling rig. A reliable connection is established between the long casing and the rotary drilling rig, ensuring that the long casing can work in coordination with the rotary drilling rig during the drilling construction process. Whether it is the drilling action at the beginning of drilling or various complex operations during the drilling process, this connection method can ensure the coordination between the long casing and the rotary drilling rig.

[0026] like Figure 2 , Figure 3 As shown, a plurality of groups of first limit blocks 14 are arranged on the top of the casing body 11, and a first limit groove 15 is provided at the bottom of the casing body 11 and at the position of the first limit block 14 corresponding to the mounting head 31. When the first limit block 14 is clamped in the first limit groove 15, the casing body can maintain structural consistency under different working conditions to avoid misalignment or offset. A plurality of groups of first connecting through holes 22 are evenly provided on the casing body 11, the connecting sleeve 12 and the reinforcement ring 21, and the first connecting bolt 23 can be inserted into the first connecting through hole 22. Through the fixing effect of the first connecting bolt, the casing body 11, the connecting sleeve 12 and the reinforcement ring 21 are connected together, which greatly enhances the stability of the entire casing structure and enables it to withstand various external forces in a complex construction environment.

[0027] Meanwhile, multiple groups of second limit blocks 16 are provided at the top of the casing body 11, and multiple groups of second limit grooves 24 are formed on the reinforcement ring 21. The second limit blocks 16 are clamped in the second limit grooves 24, further strengthening the connection relationship between the casing body and the reinforcement ring and making their cooperation more stable. In addition, multiple groups of second connection through holes 25 are formed on the casing body 11, the connecting sleeve 12 and the reinforcement ring 21. The casing body 11 is also designed with several groups of connection card slots 26, and connection plates 27 are clamped in the connection card slots 26. Multiple groups of second connection bolts 28 are uniformly arranged on the connection plates 27, and the second connection bolts 28 can pass through the second connection through holes 25, ensuring the tight connection between the various components of the casing from multiple aspects, enabling the entire casing structure to form an integral whole, and being able to effectively resist external interference and damage during the actual construction process, providing a reliable guarantee for the rotary drilling construction.

[0028] As Figure 3 , Figure 4 shown, the installation head 31 is provided with an installation sleeve 32 corresponding to the first connection through hole 2, and the installation bolt 33 can pass through the installation sleeve 32 and the first connection through hole 22, making the connection between them more stable. To further enhance the reliability of the connection, limit holes 34 are formed on both the installation sleeve 32 and the installation bolt 33, and the limit pin 35 can pass through the limit holes 34, effectively preventing the loosening or displacement of the installation bolt that may occur during use, enabling the long casing to always maintain the integrity of its structure in a complex construction environment.

[0029] The casing body 11 is made of steel, and the steel itself has the characteristics of high strength and high toughness, and can withstand large external forces. Whether it is the soil layer extrusion encountered during the drilling process or other mechanical stresses, the steel casing body 11 can effectively resist them. At the same time, an epoxy coating is also applied on the surface of the casing body 11. The epoxy coating has good corrosion resistance and can effectively prevent the casing from being eroded by moisture, chemical substances, etc. that may exist in the construction environment, thereby extending the service life of the casing.

[0030] Multiple groups of reinforcing ribs 17 are also arranged inside the casing body 11, which can significantly improve the overall strength of the casing body, share the external forces borne by the casing during use, enable the casing to maintain a stable structural form in the face of various complex working conditions, ensure that it can effectively protect the drilling wall during the drilling construction process, and provide a reliable guarantee for the smooth progress of the project.

[0031] The specific usage mode and function of this embodiment:

[0032] During use, the installation head 31 is placed corresponding to the first connection through-hole 22 on the installation sleeve 32, and then the installation bolt 33 is accurately inserted into the installation sleeve 32 and the first connection through-hole 22 to ensure a tight connection between the two, forming a preliminary stable structure. Next, the limit pin 35 is inserted into the limit holes 34 opened on the installation sleeve 32 and the installation bolt 33. This operation can further enhance the reliability of the connection, effectively prevent the installation bolt from loosening or displacing during subsequent use, and ensure the structural integrity of the long casing under complex construction environments. During the construction process, since the casing body 11 is made of steel, with the characteristics of high strength and high toughness of the steel itself, it can well withstand the extrusion of the soil layer during drilling and other mechanical stresses. At the same time, the epoxy coating on the surface of the casing body 11 can play a protective role. When encountering moisture, chemical substances, etc. in the construction environment, with the good corrosion resistance of the epoxy coating, it can effectively prevent the casing from being eroded and extend its service life. When the long casing works under complex working conditions, multiple groups of reinforcing ribs 17 in the casing body 11 can share the external forces borne by the casing, thereby improving the overall strength of the casing body and ensuring that the long casing stably protects the drilling wall during the drilling construction process and guaranteeing the smooth progress of the project.

[0033] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments.

Claims

1. A long casing for rotary drilling combined construction, comprising a plurality of casing bodies (11), characterized in that: A connecting sleeve (12) is arranged at the top of the casing body (11), wherein one group of the casing bodies (11) is clamped on the bottom of another group of the casing bodies (11) through the connecting sleeve (12), and the two groups of the casing bodies (11) are detachably connected; a reinforcement ring (21) is arranged between the two groups of the casing bodies (11), a connecting groove (13) is opened at the bottom of the casing body (11), the reinforcement ring (21) is sleeved on the connecting sleeve (12), and one end of the reinforcement ring (21) is clamped in the connecting groove (13); an installation head (31) is arranged above the casing body (11), one end of the installation head (31) is sleeved on the connecting sleeve (12), and the other end is connected to the rotary drilling rig.

2. The long casing for rotary drilling combined construction according to claim 1, characterized in that: A plurality of first limit blocks (14) are arranged on the top of the casing body (11); a first limit groove (15) is provided at the bottom of the casing body (11) and the mounting head (31) corresponding to the first limit block (14); the first limit block (14) is clamped in the first limit groove (15); a plurality of first connecting through holes (22) are provided on the casing body (11), the connecting sleeve (12) and the reinforcing ring (21); a first connecting bolt (23) is passed through the first connecting through hole (22).

3. The long casing for rotary drilling combined construction according to claim 2 is characterized by: A plurality of groups of second limit blocks (16) are arranged on the top of the casing body (11), a plurality of groups of second limit grooves (24) are provided on the reinforcement ring (21), and the second limit blocks (16) are clamped in the second limit grooves (24); a plurality of groups of second connecting through holes (25) are provided on the casing body (11), the connecting sleeve (12) and the reinforcement ring (21), a plurality of groups of connecting clamping grooves (26) are provided on the casing body (11), and connecting plates (27) are clamped in the connecting clamping grooves (26), and a plurality of groups of second connecting bolts (28) are provided on the connecting plates (27), and the second connecting bolts (28) are inserted in the second connecting through holes (25).

4. The long casing for rotary drilling combined construction according to claim 2 is characterized by: The mounting head (31) is provided with a mounting sleeve (32) corresponding to the first connecting through hole (22), and the mounting bolt (33) is inserted into the mounting sleeve (32) and the first connecting through hole (22).

5. The long casing for rotary drilling combined construction according to claim 4 is characterized by: The installation sleeve (32) and the installation bolt (33) are both provided with a limiting hole (34), and a limiting pin (35) is inserted into the limiting hole (34).

6. The long casing for rotary drilling combined construction according to claim 1, characterized in that: The casing body (11) is made of steel, and the surface of the casing body (11) is also coated with an epoxy coating.

7. The long casing for rotary drilling and combination construction according to claim 6 is characterized by: A plurality of groups of reinforcing ribs (17) are arranged in the casing body (11).

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