High-rust-proof casing pipe for full-slewing drilling machine

Abstract

The utility model relates to the technical field of pile hole construction, and discloses a high-rust-proof casing pipe for a full-slewing drilling machine, which comprises a casing pipe main body, and a protective component is mounted on the casing pipe main body; the protection assembly comprises an arc-shaped clamping sleeve arranged at the bottom of the sleeve body and a cutter welded to the lower surface of the arc-shaped clamping sleeve. The multiple sets of arc-shaped clamping sleeves are annularly arranged at equal intervals, the cutters are designed to be of a wave-shaped structure, and the high-rust-prevention casing pipe for the full-slewing drilling machine can adapt to different environmental conditions through protection of the protection assembly and the anti-corrosion coating layer and the zinc coating layer, can provide good protection no matter in a dry suburban area or a wet offshore area, and is high in practicability. The sleeve body is not prone to being corroded, under the cooperation of the arc-shaped clamping sleeve and the cutter, the sleeve body can be effectively prevented from being corroded due to abrasion, a better protection effect on the sleeve body is achieved, the rusting condition is effectively avoided, and the using effect of the sleeve body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile hole construction, in particular to a casing for a high-rust-proof full-rotation drilling rig. Background Technique

[0002] With the continuous acceleration of China's infrastructure construction, there are more and more constructions in various complex geological environments such as plateaus, mountains, hills, beaches, and river-lake beaches. During on-site construction, various complex geological conditions such as quicksand, karst caves, and rock formations are often encountered underground. Traditional excavation tools and construction methods are very difficult to construct. In recent years, full-casing full-rotation drilling rigs have emerged at home and abroad, which are a new type of pile construction engineering machinery;

[0003] At present, for the existing casings of full-rotation drilling rigs, if they encounter soils containing a large amount of hard particles such as sand and rock, or need to penetrate particularly hard rock formations, these will aggravate the wear at the bottom of the casing. The rust-proof coating at the bottom of the casing may be damaged, resulting in the metal being directly exposed to the corrosive environment, thus being easily corroded and rusted, reducing the use effect of the casing. Therefore, we propose a casing for a high-rust-proof full-rotation drilling rig to solve the above existing problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a casing for a high-rust-proof full-rotation drilling rig, which solves the problems that when the casing encounters soils containing a large amount of hard particles such as sand and rock, or needs to penetrate particularly hard rock formations, these will aggravate the wear at the bottom of the casing. The rust-proof coating at the bottom of the casing may be damaged, resulting in the metal being directly exposed to the corrosive environment, thus being easily corroded and rusted, reducing the use effect of the casing.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A casing for a high-rust-proof full-rotation drilling rig includes a casing body, and a protection component is installed on the casing body;

[0006] The protection component includes an arc-shaped clamping sleeve arranged at the bottom of the casing body and a cutter welded to the lower surface of the arc-shaped clamping sleeve;

[0007] A plurality of groups of the arc-shaped clamping sleeves are provided and are arranged in an annular equidistant manner. The cutter is designed in a wavy structure, and the maximum outer diameter of the outer sides of multiple groups of cutters is greater than the outer diameter of the casing body;

[0008] The outer surface of the casing body is sequentially coated with a galvanized layer and an anti-corrosion paint layer.

[0009] Preferably, two sets of locking bolts are provided on the arc-shaped sleeve. A perforation is provided on the surface of the arc-shaped sleeve near one side of the locking bolt. A threaded hole is provided on the bottom of the sleeve body near one side of the perforation. The locking bolt passes through the perforation of the arc-shaped sleeve and is threadedly connected to the threaded hole of the sleeve body for fixing the arc-shaped sleeve at the bottom end of the sleeve body.

[0010] Preferably, a gasket is sleeved on the surface of the locking bolt for increasing the friction between the locking bolt and the arc-shaped sleeve.

[0011] Preferably, a plurality of sets of equally spaced tooth grooves are provided on the lower surface of the cutting tool.

[0012] Preferably, two sets of positioning posts are fixed on the bottom of the sleeve body near the arc-shaped sleeve. Positioning holes adapted to the positioning posts are provided on the surface of the arc-shaped sleeve.

[0013] Preferably, the two arc-shaped sleeves are closely attached to each other.

[0014] Advantageous Effects

[0015] The present utility model provides a casing for a high-rust-preventive full-rotation drilling rig. Compared with the prior art, the following advantageous effects are achieved:

[0016] For the casing of the high-rust-preventive full-rotation drilling rig, through the protection of the anti-corrosion coating layer and the galvanized layer by the protection component, it can adapt to different environmental conditions. Whether in dry suburbs or humid offshore areas, it can provide good protection, making the sleeve body not easily corroded. Moreover, through the cooperation of the arc-shaped sleeve and the cutting tool, it can effectively avoid the corrosion of the sleeve body due to wear, playing a better protection effect on the sleeve body, thereby effectively avoiding the rusting situation and improving the use effect of the sleeve body. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the connection structure of the arc-shaped sleeve and the locking bolt of the present utility model;

[0019] Figure 3 is a schematic diagram of the connection components such as the threaded hole and the positioning post of the present utility model;

[0020] Figure 4 is of the present utility model Figure 3 The enlarged structure schematic diagram at A.

[0021] In the figure: 1. Casing body; 2. Protection component; 201. Arc-shaped clamping sleeve; 202. Locking bolt; 203. Perforation; 204. Threaded hole; 205. Gasket; 206. Cutting knife; 207. Tooth alveolar groove; 208. Positioning column; 209. Positioning hole; 210. Anticorrosive coating layer; 211. Galvanized layer. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figure 1 shown:

[0024] A casing for a high-rust-preventing full-rotation drill rig includes a casing body 1.

[0025] In this implementation scheme: To solve the technical problems existing in this prior art, such as those disclosed in the background art above, "For the currently existing casing for a full-rotation drill rig, if it encounters soil containing a large amount of hard particles such as sand and rock, or needs to penetrate through particularly hard rock formations, these will exacerbate the wear at the bottom of the casing. The rust-proof coating at the bottom of the casing may be damaged, resulting in the metal being directly exposed to the corrosive environment, thus being easily corroded and rusted, reducing the use effect of the casing." In combination, this problem is obviously a real and relatively difficult problem to solve. In view of this, to solve this technical problem, a protection component 2 is added in this application document.

[0026] Furthermore:

[0027] As Figures 1-4 shown:

[0028] A protection component 2 is installed on the casing body 1. The protection component 2 includes an arc-shaped clamping sleeve 201 arranged at the bottom of the casing body 1 and a cutting knife 206 welded to the lower surface of the arc-shaped clamping sleeve 201;

[0029] Multiple groups of arc-shaped clamping sleeves 201 are provided and are arranged in an annular equidistant manner. The cutting knife 206 is designed in a wavy structure, and the maximum outer diameter of the outer sides of multiple groups of cutting knives 206 is greater than the outer diameter of the casing body 1;

[0030] The outer surface of the casing body 1 is successively coated with a galvanized layer 211 and an anti-corrosion coating layer 210. Two groups of locking bolts 202 are provided on the arc-shaped clamping sleeve 201. A perforation 203 is formed on the surface of the arc-shaped clamping sleeve 201 near one side of the locking bolt 202. A threaded hole 204 is formed on one side of the bottom of the casing body 1 near the perforation 203. The locking bolt 202 passes through the perforation 203 of the arc-shaped clamping sleeve 201 and is threadedly connected to the threaded hole 204 of the casing body 1 for fixing the arc-shaped clamping sleeve 201 at the bottom end of the casing body 1.

[0031] In this embodiment: For the casing of the high-rust-proof full-rotation drill rig, during use, as the casing body 1 rotates and is used, when the casing body 1 contacts the rock, first, the cutting knife 206 can effectively cut into the soil or rock, improving the cutting efficiency and reducing the heat generated by friction. At the same time, under the condition that the arc-shaped clamping sleeve 201 shields and protects the bottom of the casing body 1, it can effectively protect the bottom of the casing body 1 and avoid the wear of the bottom of the casing body 1 due to the large frictional force when contacting the rock. Since the cutting knife 206 is designed with a wavy structure, it helps to disperse the cutting force and reduce the pressure on the unit area of the cutting tool, thereby reducing the wear of the cutting knife 206 and further increasing the service life of the cutting knife 206. Since the maximum outer diameter of the outer sides of multiple groups of cutting knives 206 is larger than the outer diameter of the casing body 1, during the drilling process, the diameter drilled by the cutting knife 206 is larger than the diameter of the casing body 1, thereby reducing the friction between the casing body 1 and the side wall of the soil. At the same time, due to the anti-corrosion coating layer 210 and the galvanized layer 211 being coated on the outer surface of the casing body 1, due to the protection of the anti-corrosion coating layer 210 and the galvanized layer 211, it can adapt to different environmental conditions. Whether it is a dry suburb or a humid offshore area, it can provide good protection, making the casing body 1 not easily corroded, thereby reducing the frequency of maintenance and replacement, lowering the long-term operation cost, effectively avoiding the corrosion of the casing body 1 due to wear, achieving a better protection effect on the casing body 1, thus effectively avoiding the rusting situation and improving the use effect of the casing body 1.

[0032] Since multiple groups of arc-shaped clamping sleeves 201 are provided and the multiple groups of arc-shaped clamping sleeves 201 are installed and fixed on the casing body 1 through the locking bolts 202, when the bottom of the casing body 1 is collided and causes the arc-shaped clamping sleeves 201 and the cutting knives 206 to deform, only the arc-shaped clamping sleeves 201 and the cutting knives 206 at the local position need to be replaced, thereby saving costs and improving the use effect of the device.

[0033] Furthermore;

[0034] In an alternative embodiment, a gasket 205 is sleeved on the surface of the locking bolt 202 for increasing the frictional force between the locking bolt 202 and the arc-shaped clamping sleeve 201.

[0035] In this embodiment: A gasket 205 is sleeved on the surface of the locking bolt 202, increasing the friction force between the locking bolt 202 and the arc-shaped clamping sleeve 201, and can effectively prevent the locking bolt 202 from loosening.

[0036] Furthermore;

[0037] In an alternative embodiment, a plurality of equally spaced tooth grooves 207 are formed on the lower surface of the cutting tool 206.

[0038] In this embodiment: The design of the tooth grooves 207 formed on the lower surface of the cutting tool 206 helps to discharge the debris and soil chips generated during the cutting process, avoiding the accumulation of debris between the tool and the soil, thereby reducing the wear of the tool and the resistance during the drilling process.

[0039] Furthermore;

[0040] In an alternative embodiment, two groups of positioning posts 208 are fixed to one side of the bottom of the casing body 1 close to the arc-shaped clamping sleeve 201, and positioning holes 209 adapted to the positioning posts 208 are formed on the surface of the arc-shaped clamping sleeve 201.

[0041] In this embodiment: When installing the arc-shaped clamping sleeve 201, the positioning holes 209 on the arc-shaped clamping sleeve 201 are aligned with the positioning posts 208, and the positioning holes 209 on the arc-shaped clamping sleeve 201 are inserted into the positioning posts 208. Thus, during this process, the perforations 203 and the threaded holes 204 are aligned, enabling precise positioning of the arc-shaped clamping sleeve 201, facilitating the rapid installation of the locking bolt 202, and improving the installation efficiency.

[0042] Furthermore;

[0043] In an alternative embodiment, the two groups of arc-shaped clamping sleeves 201 are closely attached to each other, and a plurality of arc-shaped clamping sleeves 201 form an annular structure after being spliced.

[0044] In this embodiment: The two groups of arc-shaped clamping sleeves 201 are closely attached to each other. After a plurality of arc-shaped clamping sleeves 201 are spliced, an annular structure is formed, increasing the overall sealing effect of the bottom of the casing body 1 and making the protection effect better.

[0045] Working principle and usage process of the present utility model: When the casing for the high-rust-proof full-rotation drilling rig is in use, with the operation of the casing body 1, when the casing body 1 contacts the rock, the cutter 206 first effectively cuts into the soil or rock, improving the cutting efficiency and reducing the heat generated by friction. At the same time, under the protection of the arc-shaped clamping sleeve 201 on the bottom of the casing body 1, the bottom of the casing body 1 can be effectively protected, avoiding the wear of the bottom of the casing body 1 due to the large friction force when contacting the rock. Since the cutter 206 is designed with a wavy structure, it helps to disperse the cutting force and reduce the pressure on the unit area of the cutter, thereby reducing the wear of the cutter 206 and further increasing the service life of the cutter 206. Since the maximum outer diameter of the outer sides of multiple groups of cutters 206 is greater than the outer diameter of the casing body 1, during the drilling process, the diameter drilled by the cutters 206 is greater than the diameter of the casing body 1, thus reducing the friction between the casing body 1 and the soil side wall. At the same time, an anti-corrosion coating layer 210 and a galvanized layer 211 are coated on the outer surface of the casing body 1. Due to the protection of the anti-corrosion coating layer 210 and the galvanized layer 211, it can adapt to different environmental conditions. Whether it is a dry suburb or a humid coastal area, it can provide good protection, making the casing body 1 not easily corroded, thereby reducing the frequency of maintenance and replacement and lowering the long-term operation cost. Through this structure, it can effectively prevent the casing body 1 from being corroded due to wear, providing a better protection effect on the casing body 1, thus effectively avoiding the rusting situation and improving the usage effect of the casing body 1. Since multiple groups of arc-shaped clamping sleeves 201 are provided, and multiple groups of arc-shaped clamping sleeves 201 are installed and fixed on the casing body 1 through locking bolts 202, when the bottom of the casing body 1 is deformed due to collision, only the arc-shaped clamping sleeves 201 and cutters 206 at the local position need to be replaced, thereby saving costs and improving the usage effect of the device. When installing the arc-shaped clamping sleeve 201, the positioning hole 209 on the arc-shaped clamping sleeve 201 is corresponded with the positioning post 208, and the positioning hole 209 on the arc-shaped clamping sleeve 201 is inserted into the positioning post 208. During this process, the through hole 203 and the threaded hole 204 are corresponded, enabling the precise positioning of the arc-shaped clamping sleeve 201 and facilitating the quick installation of the locking bolt 202, improving the installation efficiency.

[0046] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A highly rust-proof full-rotation drilling rig casing, comprising a casing body (1), characterized in that: A protective component (2) is installed on the sleeve body (1); The protection component (2) comprises an arc-shaped ferrule (201) arranged at the bottom of the sleeve body (1) and a cutter (206) welded to the lower surface of the arc-shaped ferrule (201); The arc-shaped ferrules (201) are provided in multiple groups and are arranged in an annular shape with equal distances. The cutters (206) are designed in a wave-shaped structure. The maximum outer diameters of the multiple groups of cutters (206) are larger than the outer diameter of the sleeve body (1). The outer surface of the sleeve body (1) is coated with a galvanized layer (211) and an anti-corrosion coating layer (210) in sequence.

2. The highly rust-proof full-rotation drilling rig casing according to claim 1, characterized in that: Two groups of locking bolts (202) are arranged on the arc-shaped clamping sleeve (201); a through hole (203) is provided on the surface of the arc-shaped clamping sleeve (201) near the locking bolt (202); a threaded hole (204) is provided on the bottom of the sleeve body (1) near the through hole (203); the locking bolt (202) passes through the through hole (203) of the arc-shaped clamping sleeve (201) and is threadedly connected to the threaded hole (204) of the sleeve body (1), so as to fix the arc-shaped clamping sleeve (201) to the bottom end of the sleeve body (1).

3. The highly rust-proof full-rotation drilling rig casing according to claim 2, characterized in that: A gasket (205) is sleeved on the surface of the locking bolt (202) to increase the friction between the locking bolt (202) and the arc-shaped clamping sleeve (201).

4. The highly rust-proof full-rotation drilling rig casing according to claim 1, characterized in that: The lower surface of the cutting knife (206) is provided with a plurality of groups of tooth grooves (207) arranged at equal distances.

5. The highly rust-proof full-rotation drilling rig casing according to claim 1, characterized in that: Two groups of positioning columns (208) are fixed on one side of the bottom of the sleeve body (1) close to the arc-shaped clamping sleeve (201), and positioning holes (209) matching the positioning columns (208) are opened on the surface of the arc-shaped clamping sleeve (201).

6. The highly rust-proof full-rotation drilling rig casing according to claim 1, characterized in that: The two groups of arc-shaped ferrules (201) fit tightly against each other.

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