A drill string system for cutting debris within a lunar drill

Abstract

The application discloses a drill string internal chip removal system for lunar rock drilling, which comprises a rock taking outer drill bit, an internal swallowing type rock chip removal joint, a rock chip removal cylinder cover, a directional knocking hammer, a knocking hammer mounting plate, a rock chip removal cylinder cover opening and closing transmission shaft, a rock chip removal cylinder cover opening and closing thrust shaft and a rock chip removal cylinder cover opening and closing driving motor. When drilling rock is carried out, the rock chip removal system is arranged, the rock chips generated in the drilling process are moved to the rock chip storage cavity from the hole bottom through the rock chip removal channel under the combined action of directional vibration and self inertia, and are stored in the rock chip storage cavity, so that the hole bottom is cleaned, abnormal wear of the drill bit caused by repeated crushing is avoided, and the service life of the drill bit and the drilling efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of exploration and drilling technology for extraterrestrial bodies such as the Moon and Mars, and particularly to an internal chip removal system for drilling tools used in lunar rock drilling. Background Technology

[0002] To address the bottlenecks in lunar (extraterrestrial) drilling, such as the large weight of drilling equipment, the complexity of automation due to numerous drilling actions, the difficulty in forming holes due to unstable borehole walls, the large disturbance of lunar soil, the difficulty in advancing and sampling rock blocks in the soil, the difficulty in maintaining and storing lunar soil (rock) samples, the tendency for borehole deviation, and the difficulty in dissipating heat from rock breaking by the drill bit, a dual-drill-bit biomimetic self-balancing lunar soil (rock) micro-disturbance drilling and sampling technology has been invented, which can effectively solve the above problems.

[0003] In order to enable the dual-drill-bit biomimetic self-balancing lunar soil (rock) micro-disturbance drilling and sampling technology to realize the real-time collection and storage of lunar rock cuttings during continuous drilling, ensure the cleanliness of the bottom of the hole, and create favorable conditions for the drill bit to break the rock, it is necessary to invent an internal cuttings removal system for lunar rock drilling tools. Summary of the Invention

[0004] The purpose of this invention is to address the problems and shortcomings described in the background art by providing an internal chip removal system for lunar rock drilling tools.

[0005] An internal cuttings removal system for lunar rock drilling tools includes an external cuttings bit, an internal cuttings removal connector, a cuttings removal cylinder cover, a directional hammer, a hammer mounting plate, a cuttings removal cylinder cover opening and closing drive shaft, a cuttings removal cylinder cover opening and closing thrust shaft, and a cuttings removal cylinder cover opening and closing drive motor.

[0006] The internal cuttings discharge joint is equipped with a cuttings storage chamber. An upper platform of the cuttings storage chamber is located at the end of the internal cuttings discharge joint. Six vibration transmission bases are evenly distributed in a ring on the upper platform, and six directional hammers are also evenly distributed in a ring, rotatably connected to the hammer mounting plate. The hammer heads contact the vibration transmission bases. The hammer mounting plate is fixedly connected to the drive shaft of the external drill bit. The external drill bit and the internal cuttings discharge joint are coaxially fixedly connected. Both have three evenly distributed cuttings transport channels in a ring inside, and these channels are interconnected. The cuttings inlet is located on the outer wall of the external drill bit, and the cuttings outlet is connected to the cuttings storage chamber of the internal cuttings discharge joint. The drive shaft of the external drill bit rotates under the drive of the external drill bit drive motor, causing the hammer mounting plate to rotate, which in turn drives the directional hammers to rotate. The vibration transmission base generates a circumferential, instantaneous impact, causing the external drill bit and the internal cuttings discharge joint to also generate instantaneous circumferential motion. This causes the cuttings entering the cuttings transport channel to overcome gravity and move upward under the combined action of inertia and friction with the cuttings transport channel until they are discharged from the cuttings outlet and enter the cuttings storage chamber. The upper platform of the cuttings storage chamber is fixedly connected to the cuttings discharge cylinder cover opening and closing drive motor. The cuttings discharge cylinder cover opening and closing transmission shaft is threadedly connected to the cuttings discharge cylinder cover opening and closing drive motor. The cuttings discharge cylinder cover opening and closing thrust shaft is rotatably connected to the cuttings discharge cylinder cover opening and closing transmission shaft. The cuttings discharge cylinder cover is rotatably connected to the cuttings discharge cylinder cover opening and closing thrust shaft. The side wall of the internal cuttings discharge joint is provided with a second window, through which the cuttings storage chamber is connected to the outside of the lunar rock drilling and sampling system. The cuttings discharge cylinder cover is rotatably connected inside the second window.

[0007] The beneficial effects of this invention are:

[0008] During drilling and rock extraction, a cuttings removal system is installed to transport the rock cuttings generated during drilling from the bottom of the hole to the cuttings storage chamber through the cuttings transport channel under the combined action of directional vibration and its own inertia. This cleans the bottom of the hole, avoids abnormal wear of the drill bit caused by repeated crushing, and improves the life of the drill bit and drilling efficiency. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of the present invention.

[0010] Figure 2 This is a schematic diagram of the rock cuttings transport path according to the present invention. Detailed Implementation

[0011] Referring to the attached drawings, a cuttings removal system for lunar rock drilling tools includes an external cuttings drill bit 202, an internal cuttings removal connector 204, a cuttings removal cylinder cover 211, a directional hammer 215, a hammer mounting plate 216, a cuttings removal cylinder cover opening and closing drive shaft 217, a cuttings removal cylinder cover opening and closing thrust shaft 218, and a cuttings removal cylinder cover opening and closing drive motor 219.

[0012] The internal cuttings discharge joint 204 is provided with a cuttings storage cavity 212 for storing cuttings. The upper platform 213 of the cuttings storage cavity is located near the end of the internal cuttings discharge joint 204. Six vibration transmission bases 214 are evenly distributed in a ring on the upper platform 213 of the cuttings storage cavity. Correspondingly, six directional hammers 215 are also arranged in a ring and are rotatably connected to the hammer mounting plate 216. The hammer head is in contact with the vibration transmission base 214. The hammer mounting plate 216 is fixedly connected to the drive shaft 205 of the external drill bit. The external drill bit 202 is coaxially fixedly connected to the internal cuttings discharge joint 204. Both have three cuttings transport channels 229 evenly distributed in a ring inside, and the channels are in a connected state. The cuttings inlet 233 is located on the outer wall of the external drill bit 202, and the cuttings outlet 234 is connected to the cuttings storage cavity 212 of the internal cuttings discharge joint 204. During operation, the external drill bit drive shaft 205 rotates under the drive of the external drill bit drive motor 220, causing the hammer mounting plate 216 to rotate as well, and pulling the directional hammer 215 to rotate. This rotation generates a momentary circumferential impact on the vibration transmission base 214, causing the external drill bit 202 and the internal cuttings discharge connector 204 to also undergo momentary circumferential movement. This causes the cuttings entering the cuttings transport channel 229 to overcome gravity and move upwards under the combined action of inertia and friction with the channel, until they are discharged from the cuttings outlet 234 and enter the cuttings storage chamber 212, completing the collection of cuttings generated during drilling. The upper platform 213 of the cuttings storage chamber is fixedly connected to the cuttings discharge cylinder cover opening and closing drive motor 219. The cuttings discharge cylinder cover opening and closing drive shaft 217 is threadedly connected to the cuttings discharge cylinder cover opening and closing drive motor 219. The cuttings discharge cylinder cover opening and closing thrust shaft 218 is rotatably connected to the cuttings discharge cylinder cover opening and closing drive shaft 217. The cuttings discharge cylinder cover 211 is rotatably connected to the cuttings discharge cylinder cover opening and closing thrust shaft 218. The side wall of the internal cuttings discharge connector 204 is provided with a second window 232, through which the cuttings storage chamber 212 is connected to the outside of the lunar rock drilling and sampling system. The cuttings discharge cylinder cover 211 is rotatably connected within the second window 232. During operation, after the lunar rock drilling and sampling system completes sampling and is lifted to the lunar surface, the cuttings discharge cylinder cover opening and closing drive motor 219 drives the cuttings discharge cylinder cover opening and closing transmission shaft 217 to move downward, thereby driving the cuttings discharge cylinder cover opening and closing thrust shaft 218 to move and push the cuttings discharge cylinder cover 211 to open outward, thereby dumping the cuttings collected in the cuttings storage cavity 212 during drilling out of the lunar rock drilling and sampling system.

Claims

1. An internal cuttings removal system for drilling tools used in lunar rock drilling, characterized in that: It includes an external rock drill bit (202), an internal rock cuttings discharge connector (204), a rock cuttings discharge cylinder cover (211), a directional hammer (215), a hammer mounting plate (216), a rock cuttings discharge cylinder cover opening and closing drive shaft (217), a rock cuttings discharge cylinder cover opening and closing thrust shaft (218), and a rock cuttings discharge cylinder cover opening and closing drive motor (219); The internal cuttings discharge joint (204) is provided with a cuttings storage cavity (212) for storing cuttings. The upper platform (213) of the cuttings storage cavity is located at the end of the internal cuttings discharge joint (204). Six vibration transmission bases (214) are evenly distributed in a ring on the upper platform (213). Six directional hammers (215) are also arranged in a ring and are rotatably connected to the hammer mounting plate (216). The hammer head is in contact with the vibration transmission base (214). The hammer mounting plate (216) is fixedly connected to the drive shaft (205) of the external rock-taking drill bit. 2) Coaxially fixedly connected with the internal cuttings discharge connector (204), both have three annularly distributed cuttings transport channels (229) inside, and the channels are in a connected state. The cuttings inlet (233) is set on the outer wall of the external drilling bit (202), and the cuttings outlet (234) is connected to the cuttings storage cavity (212) of the internal cuttings discharge connector (204). The external drilling bit drive shaft (205) rotates under the drive of the external drilling bit drive motor (220), which drives the hammer mounting plate (216) to rotate, and drives the directional hammer (215) to rotate, so that it... During rotation, a circumferential, instantaneous impact is generated on the vibration transmission base (214), causing the external drilling bit (202) and the internal cuttings discharge connector (204) to also generate instantaneous circumferential motion. This causes the cuttings entering the cuttings transport channel (229) to overcome gravity and move upward under the combined action of inertia and friction with the cuttings transport channel (229) until they are discharged from the cuttings outlet (234) and enter the cuttings storage chamber (212). The upper platform (213) of the cuttings storage chamber is fixedly connected to the cuttings discharge cylinder cover opening and closing drive motor (219). The opening and closing drive shaft (217) is threadedly connected to the rock cuttings discharge cylinder cover opening and closing drive motor (219). The rock cuttings discharge cylinder cover opening and closing thrust shaft (218) is rotatably connected to the rock cuttings discharge cylinder cover opening and closing drive shaft (217). The rock cuttings discharge cylinder cover (211) is rotatably connected to the rock cuttings discharge cylinder cover opening and closing thrust shaft (218). The side wall of the internal rock cuttings discharge connector (204) is provided with a second window (232). Through the second window (232), the rock cuttings storage chamber (212) is connected to the outside of the lunar rock drilling and sampling system. The rock cuttings discharge cylinder cover (211) is rotatably connected inside the second window (232).

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