Drilling chip accumulation limiting mechanism and rotary drilling machine

Abstract

The utility model discloses a drilling accumulated scrap limiting mechanism and a rotary drilling machine. The drilling accumulated scrap limiting mechanism comprises an accumulated scrap check block, an elevator, at least one fixed pulley, a rope and a detection system. A central through hole is formed in the accumulated debris stop block, and the accumulated debris stop block is sleeved on a drill rod and used for limiting accumulation of rock debris around a drill hole; the hoister has positive and negative rotation functions; at least one fixed pulley is mounted on an upper cover plate of the dust removal chamber above the accumulated scrap baffle block; one end of the rope is connected with the chip accumulation stop block, the other end of the rope penetrates through the at least one fixed pulley to be steered and then is connected to the elevator, and the elevator rotates to drive the chip accumulation stop block to move up and down on the drill rod; and the detection system is used for detecting the moving position of the chip accumulation stop block on the drill rod. The whole structure is simple, the problem that rock debris needs to be cleaned manually after drilling is solved, the working intensity is reduced, and manual secondary pollution for hole forming is avoided.

Description

Technical Field

[0001] The utility model relates to a drilling chip accumulation limiting mechanism, belonging to the technical field of cone drills. Background Art

[0002] Drilling rigs are a type of perforating equipment commonly used in open-pit mines. They use a drill bit to crush and cut rocks to form the desired holes. During the drilling process, high-pressure gas is used to blow the rock chips generated during the drilling process out of the hole along the gap between the drill rod and the borehole, forming a rock chip pile on the ground close to the edge of the borehole. After the drilling is completed, the rock chip pile needs to be manually pushed 30-40 cm away from the edge of the borehole using tools such as shovels. This is not only a huge workload but also easily pushes the rock chips into the borehole, affecting the filling effect of explosives. Summary of the Invention

[0003] In response to the problem that the debris accumulated at the edge of the hole needs to be manually cleaned after drilling, the utility model provides a drilling debris limiting mechanism with a simple structure, which solves the problem of manual cleaning of rock debris after drilling, reduces work intensity, and avoids secondary contamination of the hole by human beings.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, the utility model provides a drilling chip accumulation limiting mechanism, comprising:

[0006] A chip stopper is provided with a central through hole and is used to be sleeved on the drill pipe to limit the accumulation of rock chips around the drill hole;

[0007] The hoist has forward and reverse rotation functions;

[0008] at least one fixed pulley mounted on the upper cover plate of the dust removal chamber above the chip accumulation stopper;

[0009] A rope, one end of which is connected to the chip stopper, and the other end of which passes through the at least one fixed pulley for deflection and is then connected to the hoist, and is driven by the hoist to move the chip stopper up and down on the drill pipe;

[0010] The detection system is used to detect the moving position of the chip block on the drill rod.

[0011] In some embodiments, the chip block is an entire ring structure, and its top surface is configured as a sloped surface with a lower inner side and a higher outer side, so that rock chips will not accumulate on the slope during drilling.

[0012] In some embodiments, the rope is a forked rope converted from multiple strands to a single strand, and the multiple strands at one end are connected to the chip block and then pass through corresponding fixed pulleys to become a single rope connected to the hoist.

[0013] In some embodiments, the multiple strands of the bifurcated rope are evenly spaced along the circumference of the chip stopper at the edge thereof.

[0014] In some embodiments, the detection system includes a tension sensor, which is connected in series in the rope to determine whether the chip block has completely fallen to the ground and automatically adapt to different leg lifting heights.

[0015] In some embodiments, when the rope is a bifurcated rope in which multiple strands are converted into a single strand, the tension sensor is connected in series in the single strand of the bifurcated rope.

[0016] In some embodiments, the detection system includes a limit switch installed on the upper cover of the dust removal chamber. After the chip block rises and touches the limit switch, the elevator stops lifting.

[0017] In some embodiments, the hoist is a winch or a motor.

[0018] In a second aspect, the utility model provides a rotary drill equipped with the above-mentioned drilling chip accumulation limiting mechanism.

[0019] Beneficial effects of the utility model:

[0020] The chip block used in this utility model can be replaced according to the drill hole diameter and the required limit distance, without having to replace the lifting device and detection components. The utility model utilizes a tension sensor and limit switch to accurately control the chip block's placement on the ground and lift it to the highest point of the mechanism for securement. The lifting mechanism in this utility model automatically adjusts to different leg lift heights. The utility model has a simple overall structure, solves the problem of manual cleaning of rock chips after drilling, reduces labor intensity, and avoids secondary contamination of the drill hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0022] In the attached figure:

[0023] Figure 1 This is a schematic diagram of the drilling chip accumulation limiting mechanism of the present utility model;

[0024] Figure 2 Schematic diagram of the chip block of the present invention (a is a cross-sectional view, b is a top view);

[0025] Figure 3 This is a flow chart for the use of the drilling chip accumulation limiting mechanism of the present utility model.

[0026] The accompanying drawings are marked with the following symbols: drill rod 1, chip block 2, forked rope 3, limit switch 4, dust removal chamber upper cover 5, fixed pulley 6, tension sensor 7, and hoist 8.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0031] like Figure 1 As shown, a drilling chip limiting mechanism includes a chip stopper 2, a hoist 8, at least one fixed pulley 6, a rope and a detection system; the chip stopper 2 is provided with a central through hole for being mounted on the drill rod 1, and is used to limit the accumulation of rock chips in a certain area without affecting the drilling operation of the drill rod 1; the hoist 8 has forward and reverse functions; at least one fixed pulley 6 is installed on the upper cover plate 5 of the dust removal chamber above the chip stopper 2; one end of the rope is connected to the chip stopper 2, and the other end passes through at least one fixed pulley 6 for steering and is then connected to the hoist 8, which drives the chip stopper 2 to move up and down on the drill rod 1 after being rotated by the hoist 8; the detection system is used to detect the moving position of the chip stopper 2 on the drill rod 1.

[0032] It should be noted that the bottom of the drill pipe is equipped with a drill bit, a special component for rotary drills, which forms the required hole by rolling and cutting the ground. The hoist uses a winch or motor to raise or lower the chip block by winding the rope.

[0033] Further solutions, such as Figure 2 As shown, the chip block 2 is a circular ring structure as a whole, and its top surface is set as a slope surface with a low inside and a high outside. Under the dual effects of gravity and dust removal airflow, there is no dust or accumulation on the top surface of the chip block 2, which can limit the accumulation of rock chips in a certain area and will not affect the drilling operation of the drill rod.

[0034] It should be noted that, continue to refer to Figure 2 As shown in the figure, D2 is slightly larger than the borehole diameter; L is the distance between the dust accumulation edge and the hole edge; (D1-D2) / 2=L; α is the slope angle of the limit block. During drilling, rock cuttings will not accumulate on the slope, and the high-pressure airflow blown out from the hole will blow the dust accumulated on the periphery of the limit block away from the limit block along the slope.

[0035] Further solutions, such as Figure 1 As shown, the rope is a forked rope 3 that is converted from multiple strands to a single strand. The multiple strands at one end are connected to the chip stopper 2 and then pass through the corresponding fixed pulleys 6 to become a single rope connected to the hoist 8. The multiple strands are used to stably lift the chip stopper 2, solving the problem of instability of the chip stopper 2 when a single strand rope is used to lift it.

[0036] A further solution is that when drilling, the drilling rig needs to use outriggers to lift the machine off the ground. Due to the influence of the terrain, the height of the outriggers is different each time, so the lifting position of the hoist is also different each time. Figure 1 As shown, the detection system also includes a tension sensor 7, which is connected in series in the rope and is used to determine whether the chip block 2 has completely fallen to the ground and automatically adapt to different leg lifting heights.

[0037] It should be noted that, continue to refer to Figure 1 As shown, the tension sensor 7 is installed at the single end of the multi-strand rope to determine whether the hoist 8 places the chip block 2 on the ground. If too much rope is released, the hoist 8 will become tangled when winding the rope, causing a malfunction.

[0038] Further solutions, such as Figure 1 As shown, the detection system includes a limit switch 4, which is installed on the upper cover 5 of the dust removal chamber. After the chip block 2 rises and touches the limit switch 4, the elevator 8 stops lifting.

[0039] The following is the use process of the above-mentioned drilling chip accumulation limiting mechanism:

[0040] like Figure 1 、 Figure 3As shown, first, the chip stopper is placed at the preset hole position by the hoist (a tension sensor is used at this position to detect whether the chip stopper has completely fallen to the ground to prevent the rope from being released too much and causing the rope to be tangled when it is recovered). The drilling rig starts drilling, and the drilled rock cuttings cannot accumulate at the position of the chip stopper. At the same time, due to the special structure of the chip stopper, chips will not accumulate on the chip stopper. After the drilling is completed, the hoist lifts the chip stopper to the top until it touches the limit switch, forming a ring-shaped chip-free area around the hole.

[0041] In summary, the chip block used in this utility model can be replaced according to the drill hole diameter and the required limit distance, without having to replace the lifting device and detection components. The utility model utilizes a tension sensor and limit switch to accurately control the chip block's placement on the ground and lift it to the highest point of the mechanism for fixation. The lifting mechanism in this utility model can automatically adapt to different leg lift heights. This utility model has a simple overall structure, solves the problem of manual cleaning of rock chips after drilling, reduces labor intensity, and avoids secondary contamination of the drill hole.

[0042] The rotary drill provided by the present invention is described below. The rotary drill described below and the drilling chip accumulation limiting mechanism described above can be referred to each other.

[0043] The utility model provides a rotary drill, which may include the drilling chip accumulation limiting mechanism as described in any one of the above embodiments.

[0044] The beneficial effects achieved by the rotary drill provided by the present invention are consistent with the beneficial effects achieved by the drilling chip accumulation limiting mechanism provided by the present invention, and will not be described in detail here.

[0045] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0046] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0047] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A drilling chip limiting mechanism, characterized in that: include: A chip stopper is provided with a central through hole and is used to be sleeved on the drill pipe to limit the accumulation of rock chips around the drill hole; The hoist has forward and reverse rotation functions; at least one fixed pulley mounted on the upper cover plate of the dust removal chamber above the chip accumulation stopper; A rope, one end of which is connected to the chip stopper, and the other end of which passes through the at least one fixed pulley for deflection and is then connected to the hoist, and is driven by the hoist to move the chip stopper up and down on the drill pipe; The detection system is used to detect the moving position of the chip block on the drill rod.

2. A drilling chip accumulation limiting mechanism according to claim 1, characterized in that: The chip block is annular in structure as a whole, and its top surface is set as a slope surface with a low inside and a high outside, so that rock chips will not accumulate on the slope during drilling.

3. The drilling chip accumulation limiting mechanism according to claim 1, characterized in that: The rope is a bifurcated rope converted from multiple strands to a single strand. The multiple strands at one end are connected to the chip block and then pass through corresponding fixed pulleys to become a single strand connected to the hoist.

4. The drilling chip accumulation limiting mechanism according to claim 3, characterized in that: The multiple strands of the bifurcated rope are evenly and alternately arranged at the edge of the chip stopper along the circumference of the chip stopper.

5. The drilling chip accumulation limiting mechanism according to claim 1, characterized in that: The detection system includes a tension sensor, which is connected in series in the rope and is used to determine whether the chip block has completely fallen to the ground and automatically adapt to different leg lifting heights.

6. The drilling chip accumulation limiting mechanism according to claim 5, characterized in that: When the rope is a bifurcated rope in which multiple strands are converted into a single strand, the tension sensor is connected in series with the single strand of the bifurcated rope.

7. The drilling chip accumulation limiting mechanism according to claim 1, characterized in that: The detection system includes a limit switch installed on the upper cover of the dust removal chamber. After the chip block rises and touches the limit switch, the elevator stops lifting.

8. The drilling chip accumulation limiting mechanism according to claim 1, characterized in that: The hoist adopts a winch or a motor.

9. A rotary drill, characterized in that: A drilling chip limiting mechanism according to any one of claims 1 to 8 is installed.

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