Enhanced connecting structure of rotary drilling rig

Abstract

The utility model belongs to the field of connection of rotary drilling rigs, particularly relates to an enhanced connection structure of a rotary drilling rig, and aims to solve the problems that although a first sleeve and a second sleeve can be connected through a first bolt during use in the prior art, the first bolt is exposed outside and cannot be protected, and the service life of the first sleeve is prolonged. In order to solve the problem that the service life of the metal bolt is shortened due to the fact that the corrosion process of the metal bolt is easily accelerated by more moisture, salt or acidic substances contained in the soil, the following scheme is provided: the metal bolt comprises two sleeves, one end of each sleeve is welded with a first fixing ring, and the other end of each sleeve is welded with a second fixing ring; a plurality of threaded holes are formed in the first fixing ring, a plurality of inserting holes are formed in the second fixing ring, bolts can be protected through the protection mechanism, contact between the bolts and underground soil is reduced, the corrosion process of the bolts is slowed down, the service life of the bolts is prolonged, and the fixing cover can be conveniently mounted or dismounted through the convenient mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of connection of rotary drilling rigs, in particular to an enhanced connection structure of a rotary drilling rig. Background Technique

[0002] A rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation projects. It is mainly suitable for construction in soil layers such as sandy soil, cohesive soil, and silty soil, and is widely used in various foundation construction such as cast-in-place piles, diaphragm walls, and foundation reinforcement. When the rotary drilling rig works, it will first bury a casing in the soil, with a part of the top of the casing exposed above the ground. Then, the drill pipe of the rotary drilling rig drives the drill barrel to rotate and move vertically downward. The drill barrel rotates and excavates the soil underground in the casing. When the drill barrel rotates to a predetermined position, the soil in the casing is then rotated and excavated above the ground through the retraction of the drill pipe.

[0003] After retrieval, the patent with the publication number CN219139000U discloses a connection structure of a rotary drilling rig. However, the following deficiencies exist when this connection structure is used:

[0004] Although the first bolt can be used to connect the first casing and the second casing during use, the first bolt is exposed and cannot be protected. If the soil contains a large amount of moisture, salt, or acidic substances, these components are likely to accelerate the corrosion process of the metal bolt, shortening its service life. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies in the prior art that although the first bolt can be used to connect the first casing and the second casing during use, the first bolt is exposed and cannot be protected. If the soil contains a large amount of moisture, salt, or acidic substances, these components are likely to accelerate the corrosion process of the bolt, shortening its service life, and to propose an enhanced connection structure of a rotary drilling rig.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An enhanced connection structure of a rotary drilling rig, including two casings. One end of the casing is welded with a first fixing ring, and the other end of the casing is welded with a second fixing ring. A plurality of threaded holes are opened on the first fixing ring, and a plurality of insertion holes are opened on the second fixing ring. A bolt is inserted into the insertion hole. The first fixing ring is inserted into the second fixing ring, and one end of the bolt is threadedly connected with the threaded hole of the first fixing ring;

[0008] A protection mechanism, which is arranged on the second fixing ring to protect the bolt;

[0009] The convenient mechanism is arranged on the protection mechanism to facilitate the disassembly of the protection mechanism.

[0010] In a possible design, the protection mechanism includes a plurality of fixed covers for protecting a plurality of bolts. A plurality of internal thread grooves are formed on the second fixed ring. External threads are provided on the outer sides of the plurality of fixed covers. The fixed covers are in threaded connection with the internal thread grooves. The bolts are located inside the fixed covers. A sealing ring for improving the sealing performance between the fixed cover and the second fixed ring is fixedly arranged on one side of the fixed cover. The number of the fixed covers is the same as the number of the bolts.

[0011] In a possible design, the convenient mechanism includes a plurality of hexagonal blocks for facilitating the installation or disassembly of the plurality of fixed covers. The plurality of hexagonal blocks are respectively fixedly connected to one side of the plurality of fixed covers. The number of the hexagonal blocks is the same as the number of the fixed covers.

[0012] In a possible design, a gasket for enhancing the fixing effect is sleeved on the bolt.

[0013] In a possible design, an internal hexagonal groove for facilitating rotation with an internal hexagonal wrench is formed on one side of the hexagonal block.

[0014] In a possible design, a rubber plug for reducing the entry of soil into the internal hexagonal groove is inserted into the internal hexagonal groove.

[0015] In this application, when connecting two sleeves, insert the first fixing ring at one end of one sleeve into the second fixing ring at one end of the other sleeve, and align the jack hole of the second fixing ring with the threaded hole of the first fixing ring. Then take a gasket, put the gasket on the bolt, and then pass the bolt through the jack hole of the second fixing ring. Then use a tool (such as a wrench) to turn the bolt so that the bolt is threadedly connected to the threaded hole of the first fixing ring. After installing multiple bolts, the connection between the two sleeves can be completed. By providing the gasket, the use of the gasket can increase the contact area between the bolt and the object to be connected, thereby improving the stability of the connection. By increasing the contact area, the gasket can also help reduce the pressure per unit area, making the connection more uniform and stable. The material of the gasket can be a metal gasket or a rubber gasket, which can be selected according to actual needs. After installing multiple bolts, then take a fixing cover and screw the fixing cover tightly into the internal thread groove. At this time, the bolt is located inside the fixing cover, so that the bolt can be protected, reducing the contact between the bolt and the underground soil, thereby slowing down the corrosion process of the bolt and extending its service life. By providing the hexagonal block, when turning or disassembling the fixing cover, a wrench can be taken to turn it, which is convenient for installation and disassembly. By providing the internal hexagonal groove, in the case of having no wrench but only an internal hexagonal wrench, one end of the internal hexagonal wrench can be inserted into the internal hexagonal groove and the internal hexagonal wrench can be turned to drive the fixing cover to rotate, which is convenient for installation and disassembly. The materials of the fixing cover and the hexagonal block can be corrosion-resistant metal materials, such as stainless steel, titanium alloy, etc. The width of the first fixing ring is the same as the width of the second fixing ring, and the diameter of the first fixing ring is the same as the inner diameter of the second fixing ring.

[0016] The beneficial effects of the present utility model are as follows:

[0017] In the present utility model, for the enhanced connection structure of a rotary drilling rig, through the protection mechanism, the fixing cover is screwed tightly into the internal thread groove. At this time, the bolt is located inside the fixing cover, so that the bolt can be protected, reducing the contact between the bolt and the underground soil, thereby slowing down the corrosion process of the bolt and extending its service life;

[0018] In the present utility model, for the enhanced connection structure of a rotary drilling rig, through the convenient mechanism, by providing the hexagonal block, when turning or disassembling the fixing cover, a wrench can be taken to turn it, which is convenient for installation and disassembly;

[0019] In the present utility model, the bolt can be protected through the protection mechanism, reducing the contact between the bolt and the underground soil, thereby slowing down the corrosion process of the bolt and extending its service life. Through the convenient mechanism, it is convenient to install or disassemble the fixing cover. Description of the Drawings

[0020] Figure 1The front view structural schematic diagram of an enhanced connection structure for a rotary drilling rig proposed by the present utility model;

[0021] Figure 2 The side view structural schematic diagram of an enhanced connection structure for a rotary drilling rig proposed by the present utility model;

[0022] Figure 3 The partial structure separation structural schematic diagram of an enhanced connection structure for a rotary drilling rig proposed by the present utility model;

[0023] Figure 4 The separation structural schematic diagram of a rubber plug and a hexagonal block of an enhanced connection structure for a rotary drilling rig proposed by the present utility model.

[0024] In the figure: 1, casing; 2, first fixing ring; 3, threaded hole; 4, fixing cover; 5, second fixing ring; 6, jack; 7, internal thread groove; 8, bolt; 9, hexagonal block; 10, internal hexagonal groove; 11, rubber plug; 12, external thread; 13, gasket. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Embodiment

[0026] Referring to Figures 1-4 , an enhanced connection structure includes: two casings 1, and each casing 1 is carefully designed and processed to meet specific engineering requirements. At one end of the two casings 1, the first fixing rings 2 are respectively welded, and at the other end, the second fixing rings 5 are welded. The welding process needs to strictly control the welding temperature, welding time and welding materials to ensure the welding quality and form a firm connection between the first fixing ring 2, the second fixing ring 5 and the casing 1. A plurality of uniformly distributed threaded holes 3 are opened on the first fixing ring 2, and these threaded holes 3 are used for threaded connection with the bolts 8. At the same time, jacks 6 corresponding to the threaded holes 3 are opened on the second fixing ring 5, and the diameter of the jacks 6 is slightly larger than the diameter of the bolts 8 to facilitate the insertion and fixation of the bolts 8. The bolts 8 are inserted into the jacks 6 of the second fixing ring 5 one by one and passed through the jacks 6 to align with the threaded holes 3 of the first fixing ring 2. Then, a tool is used to rotate the bolts 8 to make them tightly threadedly connected with the threaded holes 3, thereby realizing the stable connection of the two casings 1.

[0027] In order to effectively protect the bolt 8 and prevent it from being eroded and damaged by the external environment, a protection mechanism is provided on the second fixing ring 5. The protection mechanism includes a plurality of fixing covers 4, and external threads 12 are provided on the outer side of each fixing cover 4. Internal thread grooves 7 matching the fixing covers 4 are provided on the second fixing ring 5, and the fixing covers 4 are screwed into the internal thread grooves 7 until the fixing covers 4 tightly cover the bolt 8.

[0028] In order to further improve the sealing performance between the fixing cover 4 and the second fixing ring 5, a sealing ring is fixedly provided on one side of the fixing cover 4. The sealing ring is made of a material with good elasticity and can closely fit between the fixing cover 4 and the second fixing ring 5, effectively preventing impurities such as water and soil from entering the area where the bolt 8 is located.

[0029] In order to facilitate the installation and disassembly of the fixing cover 4, a plurality of hexagonal blocks 9 are fixedly connected to one side of the fixing cover 4. The number of hexagonal blocks 9 is the same as the number of fixing covers 4, and each hexagonal block 9 is provided with an internal hexagonal groove 10. The design of the internal hexagonal groove 10 enables the operator to easily rotate the hexagonal block 9 using an internal hexagonal wrench, thereby driving the fixing cover 4 to rotate and disassemble.

[0030] This application is used in the field of connection of rotary drilling rigs and can also be used in other fields applicable to this application. Embodiment

[0031] Reference Figures 1-4 , on the basis of the first embodiment, an improved enhanced connection structure for a rotary drilling rig is provided, which is applied in the field of connection of rotary drilling rigs.

[0032] In order to prevent impurities such as soil from entering the internal hexagonal groove 10 and affecting the operation, a rubber plug 11 is inserted into the internal hexagonal groove 10. The rubber plug 11 is made of a soft and durable material and can closely fit at the opening of the internal hexagonal groove 10, effectively blocking the entry of external impurities.

[0033] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A rotary drilling rig enhanced connection structure, comprising two casings (1), characterized in that: A first fixing ring (2) is welded to one end of the sleeve (1), and a second fixing ring (5) is welded to the other end of the sleeve (1); a plurality of threaded holes (3) are provided on the first fixing ring (2), a plurality of insertion holes (6) are provided on the second fixing ring (5), bolts (8) are inserted into the insertion holes (6), the first fixing ring (2) is inserted into the second fixing ring (5), and one end of the bolt (8) is threadedly connected to the threaded hole (3) of the first fixing ring (2); A protection mechanism, the protection mechanism being arranged on the second fixing ring (5) and used for protecting the bolt (8); The convenient mechanism is arranged on the protective mechanism to facilitate the disassembly of the protective mechanism.

2. The enhanced connection structure of a rotary drilling rig according to claim 1, characterized in that: The protection mechanism comprises a plurality of fixing covers (4) for protecting a plurality of bolts (8), a plurality of internal thread grooves (7) are provided on the second fixing ring (5), external threads (12) are provided on the outer sides of the plurality of fixing covers (4), the fixing covers (4) are threadedly connected to the internal thread grooves (7), the bolts (8) are located in the fixing covers (4), a sealing ring for improving the sealing performance between the fixing covers (4) and the second fixing ring (5) is fixedly provided on one side of the fixing covers (4), and the number of the fixing covers (4) is the same as the number of the bolts (8).

3. The enhanced connection structure of a rotary drilling rig according to claim 2, characterized in that: The convenient mechanism comprises a plurality of hexagonal blocks (9) for facilitating installation or removal of the plurality of fixed covers (4); the plurality of hexagonal blocks (9) are respectively fixedly connected to one side of the plurality of fixed covers (4); and the number of the hexagonal blocks (9) is the same as the number of the fixed covers (4).

4. The enhanced connection structure of a rotary drilling rig according to claim 1, characterized in that: A gasket (13) is sleeved on the bolt (8) to enhance the fixing effect.

5. The enhanced connection structure of a rotary drilling rig according to claim 3, characterized in that: One side of the hexagonal block (9) is provided with a hexagonal slot (10) for easy rotation with a hexagonal wrench.

6. The enhanced connection structure of a rotary drilling rig according to claim 5, characterized in that: The inner plug of the hexagonal groove (10) is provided with a rubber plug (11) for reducing the amount of dirt that enters the inner hexagonal groove (10).

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