Hydraulic automatic rock core discharging system of drilling machine

Abstract

The utility model discloses a drilling machine hydraulic automatic rock core discharging system which comprises a drill bit, the drill bit is fixedly connected with a drill rod in the axial direction, an ejector rod is arranged in the drill bit, a sealing piston piece is arranged at the top of the ejector rod, and a hydraulic bin is arranged between the sealing piston piece and the inner top of the drill bit. An outward quick connector is arranged on the drill bit wall at the top of the hydraulic bin; a spring bin is arranged on the periphery of the ejector rod, a spring is arranged in the spring bin and fixed between the sealing piston piece and a fixing ring at the bottom of the spring bin, and the ejector rod in the fixing ring can move in a reciprocating mode. The quick connector on the hydraulic bin is connected with the quick connector of the oil pump through a high-pressure oil pipe. A rock core is stably ejected out of the drill bit through the hydraulic system and the ejector rod, the integrity of the rock core is protected, damage to the rock core is reduced, the quality of a rock core sample is guaranteed, and follow-up geological analysis and research work are facilitated; the working efficiency is greatly improved, and the labor intensity is reduced; the hydraulic system is connected through the quick connector, so that equipment is convenient to mount and dismount.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration equipment technology, and in particular to a hydraulic automatic core extraction system for drilling rigs. Background Technology

[0002] In geological exploration, obtaining accurate and complete core samples is crucial for gaining a deep understanding of underground geological structures, rock properties, and mineral resource distribution. Traditional core drilling rigs have several shortcomings in practical applications. First, the core extraction process often relies heavily on manual labor, which is not only inefficient but also subjectes operators to high labor intensity. Prolonged work can easily lead to fatigue, thus affecting the accuracy and progress of the work. Second, traditional core extraction methods cannot guarantee the integrity of the core samples. During the extraction process, the cores are easily damaged by external forces such as compression and impact, which can adversely affect subsequent geological analysis and research results, leading to deviations in geological information. Furthermore, existing drilling rigs have poor adaptability to complex geological conditions in their structural design. When encountering rock layers of different hardness and types, frequent equipment changes or adjustments to operating methods are often required, increasing exploration costs and time. Therefore, developing a drilling rig that can automatically, efficiently, and safely extract core samples while possessing good geological adaptability is of significant practical importance. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hydraulic automatic core extraction system for drilling rigs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A hydraulic automatic core extraction system for drilling rigs includes a drill bit, drill rod, push rod, and a hydraulic system. The hydraulic system includes an oil pump, a hydraulic chamber, a high-pressure oil pipe, and a quick connector. The drill bit is axially fixed to the drill rod. The drill bit is a cylindrical drill bit with an open front end. A push rod is installed inside the drill bit. A sealing piston plate is installed at the top of the push rod. A hydraulic chamber is installed between the sealing piston plate and the top of the drill bit, and the sealing piston plate seals and isolates the hydraulic chamber. An outward-facing quick connector is installed on the drill bit wall at the top of the hydraulic chamber. A spring chamber is installed between the outer periphery of the push rod and the inner wall of the drill bit. A spring is installed inside the spring chamber. One end of the spring is fixed to the sealing piston plate, and the other end of the spring is fixed to a fixing ring at the bottom of the spring chamber. The fixing ring is fixed to the inner wall of the drill bit, and the push rod inside the fixing ring can reciprocate. The quick connector on the hydraulic chamber is connected to the quick connector of the oil pump through the high-pressure oil pipe.

[0006] The drill pipe is made of high-strength alloy steel and has a hollow internal structure, which reduces its weight.

[0007] The oil pump is a high-pressure plunger pump.

[0008] The drill bit and drill rod are connected by a trapezoidal thread. The trapezoidal thread has a large tooth angle and pitch, which can withstand a large torque and axial force, ensuring a firm connection during drilling and preventing loosening. In addition, a sealing gasket is provided at the threaded connection to prevent mud, debris and other impurities from entering the connection during drilling and affecting the stability of the connection.

[0009] The sealing piston plate is made of fluororubber material, which has good high temperature resistance, oil resistance and sealing performance, and can effectively prevent hydraulic oil leakage and ensure the sealing of the hydraulic chamber.

[0010] The quick connector adopts a self-sealing structure, which can automatically seal during connection and disassembly to prevent hydraulic oil leakage, while ensuring a firm connection and withstanding the impact of high-pressure hydraulic oil.

[0011] The beneficial effects of this utility model are as follows:

[0012] The hydraulic system and push rod smoothly eject the rock core from the drill bit, protecting the integrity of the rock core, reducing damage to the rock core, ensuring the quality of the rock core sample, and facilitating subsequent geological analysis and research; it greatly improves work efficiency and reduces labor intensity; the use of quick-connect couplings to connect the hydraulic system facilitates the installation and disassembly of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] In the diagram: 1-Drill bit; 2-Drill rod; 3-Top rod; 4-Oil pump; 5-Hydraulic chamber; 6-Spring chamber; 7-Spring; 8-Sealing piston plate; 9-Quick connector; 10-High-pressure oil pipe; 11-Retaining ring. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0016] Example 1

[0017] This utility model provides a hydraulic automatic core extraction system for drilling rigs, the structure of which includes a drill bit 1, a drill rod 2, a push rod 3, and a hydraulic system; the hydraulic system includes an oil pump 4, a hydraulic chamber 6, a high-pressure oil pipe 10, and a quick connector 9; the drill bit 1 is axially fixedly connected to the drill rod 2, the drill bit 1 is a cylindrical drill bit 1 with an open front end, the push rod 3 is provided inside the drill bit 1, the top of the push rod 3 is provided with a sealing piston plate 8, the hydraulic chamber 6 is provided between the sealing piston plate 8 and the top of the drill bit 1, the sealing piston plate 8 seals and blocks the hydraulic chamber 6; the quick connector 9 is provided on the wall of the drill bit 1 at the top of the hydraulic chamber 6; a spring is provided between the outer periphery of the push rod 3 and the inner wall of the drill bit 1. The spring magazine contains a spring 7, one end of which is fixed to a sealing piston plate 8, and the other end is fixed to a fixing ring 11 at the bottom of the spring magazine. The fixing ring 11 is fixed to the inner wall of the drill bit 1, and the push rod 3 inside the fixing ring 11 can reciprocate. The quick connector 9 on the hydraulic chamber 6 is connected to the quick connector 9 of the oil pump 4 via a high-pressure oil pipe 10. The drill rod 2 is made of high-strength alloy steel and has a hollow internal structure. The oil pump 4 is a high-pressure plunger pump. The drill bit 1 and the drill rod 2 are connected by a trapezoidal thread, and a sealing gasket is provided at the thread connection. The sealing piston plate 8 is made of fluororubber. The quick connector 9 has a self-sealing structure.

[0018] Specifically, when in use, the drilling rig is used in conjunction with the power system and support structure. When the drilling rig is running and drilling, the high-pressure oil pipe 10 and oil pump 4 are not connected. Drilling is carried out through the drill bit 1. After reaching a certain depth, the drill rod 2 and drill bit 1 are taken out. The oil pump 4 is connected through the quick connector 9 and the high-pressure oil pipe 10. When the oil pump 4 runs, the hydraulic chamber 5 is filled with high-pressure oil. At the same time, the sealing piston plate 8 at the top of the push rod 3 is squeezed to push the push rod 3 downward, pushing out the rock core in the drill bit 1 completely. The oil pump 4 is a high-pressure plunger pump. When the high-pressure oil in the hydraulic chamber 6 returns to the oil pump 4 during reciprocating operation, the spring 7 in the spring chamber 6 resets and the push rod 3 is reset.

Claims

1. A hydraulic automatic core extraction system for drilling rigs, characterized in that: The system includes a drill bit, drill rod, push rod, and hydraulic system. The hydraulic system includes an oil pump, hydraulic chamber, high-pressure oil pipe, and quick connectors. The drill bit is axially fixed to the drill rod. The drill bit is a cylindrical drill bit with an open front end. A push rod is installed inside the drill bit. A sealing piston plate is installed at the top of the push rod. A hydraulic chamber is installed between the sealing piston plate and the top of the drill bit, and the sealing piston plate seals and isolates the hydraulic chamber. An outward-facing quick connector is installed on the drill bit wall at the top of the hydraulic chamber. A spring chamber is installed between the outer periphery of the push rod and the inner wall of the drill bit. A spring is installed inside the spring chamber. One end of the spring is fixed to the sealing piston plate, and the other end of the spring is fixed to a fixing ring at the bottom of the spring chamber. The fixing ring is fixed to the inner wall of the drill bit, and the push rod inside the fixing ring can reciprocate. The quick connector on the hydraulic chamber is connected to the quick connector of the oil pump through a high-pressure oil pipe.

2. The hydraulic automatic core extraction system for drilling rigs according to claim 1, characterized in that: The drill pipe is made of high-strength alloy steel and has a hollow internal structure.

3. The hydraulic automatic core extraction system for drilling rigs according to claim 1, characterized in that: The oil pump is a high-pressure plunger pump.

4. The hydraulic automatic core extraction system for drilling rigs according to claim 1, characterized in that: The drill bit and drill rod are connected by a trapezoidal thread, and a sealing gasket is provided at the thread connection.

5. The hydraulic automatic core extraction system for drilling rigs according to claim 1, characterized in that: The sealing piston plate is made of fluororubber.

6. The hydraulic automatic core extraction system for drilling rigs according to claim 1, characterized in that: The quick connector adopts a self-sealing structure.

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