Twist bit and combined device with same

Abstract

The utility model discloses an auger bit and a combined device with the auger bit, and belongs to the technical field of sampling devices. The twist bit comprises a rod part; one end of the end part is connected with the rod part, so that a circumferential annular containing space is formed, and the end part is used for preventing an ore sample from the rod part from falling back to a drill hole. The twist drill combination device comprises a drilling machine body and a twist drill bit, and the twist drill bit is installed on the drilling machine body through a drill rod and used for sampling of a tailing pond. When the gravity action and the adhesion force between the ore sample and the rod part are insufficient, the scheme can prevent the ore sample from falling back into the drill hole, so that the problem that the ore sample slips when the twist drill is used for drilling the ore sample in the prior art is solved, and meanwhile, the accuracy of a sampling result is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of sampling devices, and relates to a twist drill bit and a combined device having the twist drill bit. Background Technology

[0002] Twist drills, as a commonly used drilling tool, play a crucial role in machining. As sampling work progresses, using a drilling rig in conjunction with a twist drill bit to conduct detailed sampling of specific areas of tailings is indeed an effective method.

[0003] When using twist drill bits to extract mineral samples at mining sites, the samples tend to adhere tightly to the drill bit due to its special structure and drilling method (rotary sampling). However, when the drill bit is removed from the borehole, due to gravity and insufficient adhesion between the sample and the drill bit, some of the sample easily slips back into the borehole, causing sample slippage and resulting in inaccurate and incomplete sampling results.

[0004] Furthermore, the adhesion problem caused by the moisture content of the mineral samples also poses a significant challenge to operators. Traditional methods using pointed pry bars, crowbars, and bare hands are not only inefficient but also pose safety risks.

[0005] To address the above issues and improve the performance and adaptability of twist drills, it is necessary to propose a new type of twist drill device. Utility Model Content

[0006] To at least solve the problem of mineral sample slippage when using twist drills in the prior art, the present invention provides the following technical solution:

[0007] A twist drill bit, comprising:

[0008] rod; and

[0009] The end portion is connected to the rod portion to form a circumferential annular receiving space to prevent mineral samples from the rod portion from falling back into the borehole.

[0010] In the twist drill bit described above, optionally, the diameter of the end portion is 8 to 12 mm larger than the diameter of the shank; and the length of the shank is greater than the length of the end portion.

[0011] In the twist drill bit described above, optionally, the cutting edge thread angle at the end is greater than the cutting edge thread angle at the shank, and the cutting edge thread at the end communicates with the receiving space.

[0012] In the twist drill bit described above, optionally, one end of the end is a flat surface; or one end of the end is an annular groove.

[0013] In the twist drill bit described above, optionally, the surfaces of the shank and the end are provided with an anti-adhesion coating.

[0014] A twist drill assembly, comprising:

[0015] The drilling rig body; and the twist drill bit as described above, which is mounted on the drilling rig body via a drill rod for tailings dam sampling.

[0016] Optionally, in the twist drill assembly described above, the drill body is equipped with a pedestrian protection monitoring device to monitor the safe distance between the operator and the equipment.

[0017] Optionally, in the twist drill assembly described above, the assembly further includes a sample shaker; the sample shaker is located on one side of the drill body and is used to detach the mineral sample attached to the twist drill bit.

[0018] In the twist drill assembly described above, optionally, the drill body includes: a main unit, a traveling device, a tilting device, and a directional support; the traveling device is located at the bottom of the main unit and is used to move the position of the main unit; the main unit is provided with outriggers for raising the height of the main unit and adjusting the level of the main unit; the directional support is mounted on the main unit via the tilting device; when the tilting device is fully extended, the directional support is in a vertical state; the twist drill bit is parallel to the directional support, and the twist drill bit is connected to the directional support via a wire rope.

[0019] In the twist drill assembly described above, optionally, the other end of the wire rope is connected to the main unit via a guide frame disposed at the fixed end of the directional support, and the other end of the wire rope is connected to the drill rod via a directional device; the directional device is installed on the directional support and reciprocates along the length direction of the directional support, and the directional device is used to keep the drill rod in a vertical state; the shaking device is installed on the drill rod, and the height of the end of the shaking device from the ground is 50 to 60 mm.

[0020] The beneficial effects of the technical solution provided by this utility model embodiment are:

[0021] This application solves the problem of mineral sample slippage when using twist drills in the prior art by forming an annular receiving space between the shaft and the end of the twist drill bit. This prevents the mineral sample from falling back into the borehole. It also ensures the accuracy of the sampling results. Attached Figure Description

[0022] Figure 1A combined device with a twist drill bit is provided for an embodiment of this utility model;

[0023] Figure 2 A schematic diagram of the structure of a twist drill bit provided in an embodiment of this utility model;

[0024] In the diagram: 1. Walking device; 2. Outrigger; 3. Main unit; 4. Tilt device; 5. Guide frame; 6. Orientation support; 7. Wire rope; 8. Orienter; 9. Drill rod; 10. Twist drill bit; 101. Rod section; 102. End; 11. Shaker; 12. Pedestrian protection monitoring device; 13. Base; 14. Accommodation space. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] Please see Figure 2 This utility model provides the following technical solution: a twist drill bit, comprising a shank 101 and an end 102. The shank 101 is a conventional twist drill. One end of the end 102 is connected to the shank 101 to form a circumferential annular receiving space 14. Preferably, the cutting edge thread on the sidewall of the end 102 communicates with the receiving space 14, and the rotation directions of the shank 101 and the end 102 are consistent. The cutting edge thread angle of the end 102 is greater than that of the shank 101, and the cutting edge thread of the shank 101 tends to be horizontal, thus reducing the amount of mineral sample slippage. Figure 2In the diagram, end 102 is located below rod 101. A twist drill bit 10 is used to drill a hole. Due to the threaded structure on the outer wall of the twist drill bit 10, the mineral sample adheres tightly to it. When rod 101 is removed from the hole, due to gravity and insufficient adhesion between the mineral sample and rod 101, some of the mineral sample detaches from rod 101 and slides down into the receiving space 14 between rod 101 and end 102. This receiving space 14 prevents the mineral sample from falling back into the hole, thus solving the problem of mineral sample slippage when using a twist drill in the prior art, while ensuring the accuracy of the sampling results. It should be noted that the twist drill bit 10 of this application is made of high-performance high-speed steel and powder metallurgy high-speed steel, which can increase the service life by 12 times and significantly improve wear resistance. When connecting rod and end, the connecting end of rod can be a tapered tip, which increases the connection strength between rod and end. The annular receiving space formed by the connection between the rod and the end gradually increases in cross-section from top to bottom.

[0028] To better receive the ore sample detached from the rod 101, the diameter of the end 102 is 8–12 mm larger than the diameter of the rod 101, for example, 8 mm, 9 mm, 10 mm, 11 mm, or 12 mm. A difference of 10 mm between the two diameters yields the best results. It should be noted that the length of the rod 101 is greater than the length of the end 102.

[0029] To improve drilling accuracy, the cutting edge shape of the twist drill bit is optimized in this embodiment. The drill bit with an R-shaped cutting edge transition and an increased rake angle of the chisel edge is adopted, as well as a protective edge formed by edge trimming. This effectively prevents the drill bit from chipping during drilling, thereby improving drilling accuracy.

[0030] As an embodiment of the specific structure of the end 102, in this embodiment, one end of the end 102 is a plane; or one end of the end 102 is an annular groove, which facilitates the reception of the mineral sample sliding down.

[0031] To prevent mineral samples from adhering to the surface of the twist drill bit 10 due to moisture content, this embodiment provides an anti-adhesion coating (such as tin TiN, titanium aluminum nitride TiAlN, etc.) on the surfaces of the shank 101 and end 102. This reduces the adhesion of sample material to the twist drill bit 10. The coating utilizes nanotechnology to ensure uniformity and a durable anti-adhesion effect. The service life of the high-speed steel twist drill bit, after applying the anti-adhesion coating, can be increased by 13 times.

[0032] Please see Figure 1This utility model also provides the following technical solution: a twist drill assembly, comprising: a drill rig body and a twist drill bit 10 as described above. Before use, the twist drill bit 10 is mounted on the drill rig body via a drill rod 9. During use, the drill rig body controls the twist drill bit 10 to drill for mineral samples in the tailings dam. For specific operating methods of the drill rig body, refer to commonly used drill rigs in the field; this embodiment is not limited to these methods.

[0033] To enhance the safety of the equipment, a pedestrian protection monitoring device 12 is installed on the drilling rig to monitor the safe distance between operators and the equipment. The pedestrian protection monitoring device 12 uses infrared technology for monitoring. Before use, a fan-shaped protection distance, such as any value between 18 and 22 mm, is preset. Simultaneously, the pedestrian protection monitoring device 12 is connected to the drilling rig body (referring to the main unit 3). The main unit 3 analyzes the data sent by the pedestrian protection monitoring device 12 through an artificial intelligence algorithm. Once a potential danger is detected (i.e., the data is less than the preset value), drilling will automatically stop and an alarm will be issued. This prevents possible accidents and ensures personnel safety during the sampling process.

[0034] To improve sampling efficiency, the combined device also includes a shaker 11. The shaker 11 and the base 13 are an integral structure located on one side of the drilling rig body (specifically, the directional support 6). When collecting mineral samples (also called specimens), the base 13 of the shaker 11 is rotated, causing the shaker 11 to wrap around the twist drill bit 10. The shaker 11 is then activated, and its high-frequency vibration causes the mineral sample attached to the twist drill bit 10 to detach and fall into the shaker 11. Compared to the existing technology where mineral samples are manually removed from the twist drill bit with a shovel, this significantly improves work efficiency and safety.

[0035] As an embodiment of the specific structure of the aforementioned drilling rig body, in this embodiment, the drilling rig body includes: a main unit 3, a traveling device 1, a tilting device 4, and a directional support 6. The traveling device 1 is located at the bottom of the main unit 3 and is used to move the position of the main unit 3 (e.g., the position to be drilled). The main unit 3 is equipped with outriggers 2 for raising the height of the main unit 3 and adjusting its level. The directional support 6 is mounted on the main unit 3 via the tilting device 4. When the tilting device 4 is fully extended, the directional support 6 is in a vertical position. The twist drill bit 10 is parallel to the directional support 6 and is connected to the directional support 6 via a wire rope 7. Preferably, one end of the wire rope 7 is connected to the main unit 3 via a guide frame 5 located at the fixed end of the directional support 6, and the other end of the wire rope 7 is connected to the drill rod 9 via a guide 8. The guide 8 is mounted on the directional support 6 and can reciprocate along the length of the directional support 6 following the twist drill bit 10 (in...). Figure 1In the image shown, (referring to movement in an upward or downward direction), the orienter 8 is used to keep the drill rod 9 vertical. It should be noted that the sampler 11 is mounted on the drill rod 9 and meets the minimum limit requirement of the twist drill bit 10, that is, the height of the end 102 of the twist drill bit 10 from the ground is 50-60 mm.

[0036] The working principle of the twist drill assembly is briefly introduced below:

[0037] The walking device 1 moves normally and turns. When the walking device 1 reaches the position to be drilled, the support leg 2 on the main unit 3 extends, raising the height of the components above the main unit 3 and adjusting the level. Then the tilting device 4 unfolds (as shown). Figure 1 As shown, the directional support 6 is in a vertical position. One end of the wire rope 7 is connected to the main unit 3 through the guide frame 5 located at the top of the directional support 6, and the other end of the wire rope 7 is connected to the directional device 8 located on the directional support 6. At the same time, the directional device 8 is connected to the twist drill bit 10 through the drill rod 9. The main unit 3 raises or lowers the wire rope 7 according to the preset drilling depth. The drill rod 9 and the twist drill bit 10 are raised or lowered in the same direction as the wire rope 7. The directional device 8 keeps the drill rod 9 in a vertical position. At the same time, it also drives the drill rod 9 and the twist drill bit 10 to rotate and drill through the internal structure. With the help of the external thread structure of the twist drill bit 10, the mineral sample is tightly attached to the twist drill bit 10. During the drilling process, due to the effect of gravity and the insufficient adhesion between the mineral sample and the rod 101, some of the mineral sample detaches from the rod 101 and slides down into the receiving space 14 between the rod 101 and the end 102.

[0038] During the operation, the pedestrian protection monitoring device 12 monitors the safe distance between the operator and the equipment in real time.

[0039] When collecting samples, rotate the base 13 of the shaker 11 so that the shaker 11 wraps around the twist drill bit 10. The sample is dropped into the shaker 11 by vibration, and finally the sample is transported away.

[0040] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. A twist drill, characterized by The twist drill comprises: a rod portion; and an end portion connected to the rod portion at one end to form a circumferential annular receiving space for preventing the ore sample from falling back into the borehole from the rod portion.

2. The twist drill according to claim 1, wherein The diameter of the end portion is 8-12mm larger than that of the rod portion; and The length of the rod portion is greater than that of the end portion.

3. The twist drill according to claim 1, wherein The blade thread angle of the end portion is greater than that of the rod portion, and the blade thread of the end portion is in communication with the receiving space.

4. The twist drill according to claim 1, wherein One end of the end portion is a flat surface; or One end of the end portion is an annular groove.

5. The twist drill according to claim 1, wherein The surfaces of the rod portion and the end portion are provided with an anti-adhesion coating.

6. A twist drill combination, characterized in that The combined device comprises: a drilling machine body; and the twist drill according to any one of claims 1-5 is installed on the drilling machine body through a drill rod for tailings sampling.

7. The twist drill assembly of claim 6, wherein, A pedestrian protection monitoring device is arranged on the drilling machine body for monitoring the safety distance between the operator and the equipment.

8. The twist drill assembly of claim 6, wherein, The combined device further comprises a sample shaker; The sample shaker is located on one side of the drilling machine body, and is used to make the ore sample attached to the twist drill fall off.

9. The twist drill assembly of claim 8, wherein, The drilling machine body comprises a main machine, a walking device, an inclination device and a directional support; The walking device is arranged at the bottom of the main machine for moving the position of the main machine; A supporting leg is arranged on the main machine for lifting the height of the main machine and adjusting the levelness of the main machine; The directional support is installed on the main machine through the inclination device; When the inclination device is fully unfolded, the directional support is in a vertical state; The twist drill is parallel to the directional support, and the twist drill is connected to the directional support through a steel wire rope.

10. The twist drill assembly of claim 9, wherein, The other end of the steel wire rope is linked to the main machine through a guide frame arranged at the end of the directional support, and the other end of the steel wire rope is connected to the drill rod through a directional device; The directional device is installed on the directional support and reciprocally moves along the length direction of the directional support, and is used to keep the drill rod in a vertical state; The sample shaker is installed on the drill rod, and the height of the end portion from the ground is 50-60mm.

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