Drilling device special for strip mine soft rock

Abstract

The utility model relates to a special drilling device for strip mine soft rock. Comprising a circular-ring-shaped base, a plurality of connecting blocks fixedly arranged on the outer circumference of the base at intervals in a surrounding mode, electric rods arranged on the top faces of the connecting blocks, connecting rods arranged at the top ends of the electric rods and extension rods arranged at the tops of the connecting rods. The motor is fixedly connected with the ends, away from the electric rod, of the extension rods through fixing sleeves, the rotating column is fixedly arranged at the end of the motor, the spiral rotating piece surrounds the peripheral side of the rotating column, and the drill bit is arranged at the bottom end of the rotating column. According to the drilling machine, the motor can drive the rotating column to rotate so as to drive the drill bit to drill the ground, the spiral rotating piece can bring soil and stone chippings drilled by the drill bit to the ground, the electric rod can drive the rotating column to move upwards or downwards to conduct drilling and soil discharging, and the outer cover can prevent soil and stone impurities from splashing all around during drilling.

Description

Technical Field

[0001] The utility model relates to the field of mining engineering equipment, in particular to a special drilling device for soft rocks in open-pit mines. Background Art

[0002] Open-pit blasting is the primary process of mining, accounting for about 30% to 35% of the total mining cost during the entire ore mining process. A large amount of rock debris will inevitably be generated along with the drilling operation. These debris are blown to the surface of the hole mouth by the auxiliary equipment of the drill rig and reused during the blasting operation as filling materials to achieve interval charging or hole backfilling. This achieves the purpose of controlling ore loss, eliminating the foundation, reducing large pieces, and improving the blasting quality.

[0003] Since many mining companies have different standards and requirements for blasting operations, especially some large or super-large open-pit coal mines clearly state that "rock powder is cleaned within 0.5m from the edge of the hole to see the hard bottom, and the rock powder forms a closed ring hole protection ring with a height of not less than 0.1m", this open-pit mine operation standardization requirement has become the standard of the coal industry. In order to standardize the operation of this process, pure manual work is basically adopted in actual construction, which has high labor intensity and is difficult to meet quality requirements in plateau or cold regions. Although a special device for pushing the rock powder of the hole outward with four right-angle push plates has been developed, it has also been put into use in some engineering projects. In practice, when using this equipment, there will be gaps between the push plates, which need to be supplemented by manual caulking and repair. Rock chips fall into the blasthole, resulting in insufficient hole depth, and the closed circle is irregular, and the equipment has defects in use function. The whole process consumes a lot of manpower, increases costs, is slow, and quality is difficult to guarantee.

[0004] Therefore, an innovative drilling device specially designed for soft rock in open-pit mines is developed to solve the above technical problems. Utility Model Content

[0005] In view of this, the utility model aims to provide a special drilling device for soft rock in open-pit mines to solve the problems in the above-mentioned background technology.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The present invention proposes a special drilling device for soft rock in open-pit mines, which comprises: a base in the shape of a ring, a plurality of connection blocks fixedly arranged around the outer circumference of the base at intervals, an electric rod arranged on the top surface of each of the connection blocks, a connecting rod arranged at the top of the electric rod, an extension rod arranged at the top of the connecting rod, a motor fixedly connected to one end of each of the extension rods away from the electric rod through a fixing sleeve, a rotating column fixedly arranged at the end of the motor, a spiral rotating sheet surrounding the circumference of the rotating column, and a drill bit arranged at the bottom end of the rotating column;

[0008] The end of the motor is arranged downward, the end of the rotating column is directly opposite to the center of the base, an outer cover is arranged on the top of the base, and a sliding groove cooperating with the connecting rod is arranged along the height direction of the outer cover.

[0009] Furthermore, a receiving tray in the shape of a funnel is provided on the inner side wall of the base, and an inner hole is provided at the bottom of the receiving tray;

[0010] The rotating column faces the inner hole.

[0011] Furthermore, a spiral pattern is provided on the inner side wall of the receiving tray, and a storage groove that follows the contour is provided on the base;

[0012] The receiving plate is rotatably connected to the inner side wall of the base, and the receiving plate is fixedly connected to the upper position of the rotating column through a connecting component.

[0013] Furthermore, the connecting assembly includes a fixing rod and a mounting portion, the mounting portion is fixedly mounted on the upper position of the rotating column, the fixing rod is in a 7-shape, one end of which is fixedly connected to the receiving plate, and the other end of which is fixedly connected to the mounting portion, and at least two groups of fixing rods are provided.

[0014] Furthermore, one end of the connecting rod away from the electric rod is rotatably connected to the rotating column through a rotating sleeve.

[0015] Furthermore, the drill bit is detachably connected to the end of the rotating column via a nut.

[0016] Furthermore, the connection block and the bottom surface of the base are provided with a plurality of friction lines.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] In the utility model, the motor can drive the rotating column to rotate, thereby driving the drill bit to drill the ground, the spiral rotating piece can bring the soil and stone debris drilled by the drill bit to the ground, the electric rod can drive the rotating column to move upward or downward to drill holes and remove soil, the outer cover can prevent soil and stone impurities from splashing around during drilling, and the sliding groove on the outer cover cooperates with the connecting rod, so that the sliding rod is not restricted by the outer cover when sliding downward. The fixing sleeve and the extension rod can fix the motor on each connecting rod, so that each electric rod can be driven by the motor to move the rotating column up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the connection component of the utility model.

[0024] Description of reference numerals:

[0025] 101, base; 1011, storage tank; 102, connection block;

[0026] 201, electric rod; 202, connecting rod; 203, extension rod; 204, fixed sleeve; 205, rotating sleeve;

[0027] 3. Motor;

[0028] 401, rotating column; 402, rotating sheet; 403, drill bit; 404, nut;

[0029] 501, mounting portion; 502, fixing rod;

[0030] 601, receiving plate; 602, spiral pattern; 603, inner hole;

[0031] 701, outer cover; 702, slide;

[0032] 8. Friction lines. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0036] The following will refer to the attached Figures 1 to 4 The utility model is described in detail in conjunction with the embodiments.

[0037] In general, the utility model relates to a special drilling device for soft rock in an open-pit mine, comprising a base 101 in the shape of a ring, a plurality of connection blocks 102 fixedly arranged around the outer circumference of the base 101 at intervals, an electric rod 201 fixedly arranged on the top surface of each connection block 102, a connection rod 202 fixedly arranged at the top of the electric rod 201, an extension rod 203 fixedly arranged on the top of the connection rod 202, a motor 3 fixedly connected to one end of each extension rod 203 away from the electric rod 201 through a fixing sleeve 204, a rotating column 401 fixedly arranged at the end of the motor 3, a spiral rotating sheet 402 surrounding the circumference of the rotating column 401, and a drill bit 403 arranged at the bottom end of the rotating column 401, and a slide groove 702 cooperating with the connecting rod 202 is provided along the height direction of the outer cover 701.

[0038] In this embodiment, the motor 3 can drive the rotating column 401 to rotate, thereby driving the drill bit 403 to drill the ground, and the spiral rotating piece 402 can bring the soil and stone debris drilled by the drill bit 403 to the ground. The electric rod 201 can drive the rotating column 401 to move upward or downward to drill holes and remove soil. The outer cover 701 can prevent soil and stone impurities from splashing around during drilling. The slide groove 702 provided on the outer cover 701 cooperates with the connecting rod 202, so that the sliding rod is not restricted by the outer cover 701 when sliding downward. The fixing sleeve 204 and the extension rod 203 can fix the motor 3 on each connecting rod 202, so that each electric rod 201 can be driven by the motor 3 to move up and down.

[0039] In specific implementation, at least three groups of electric rods 201 are preferably provided and started at the same time. As the drilling and soil discharge process proceeds, the electric rods 201 will contract and drive the rotating column 401 to operate downward to drill holes and discharge soil, during which the connecting rod 202 will slide in the slide groove 702. During installation, the end of the motor 3 is arranged downward, and the end of the rotating column 401 is directly opposite to the center position of the base 101. This structure can facilitate the operator to align the rotating column 401 with the drilling and soil discharge position.

[0040] Preferably, the drill bit 403 is detachably connected to the end of the rotating column 401. Specifically, the drill bit 403 is connected to the bottom end of the rotating column 401 via a nut 404. Of course, it can also be connected to the rotating column 401 via a snap fastener, etc., which is not further limited here.

[0041] It should be noted that, in the present soil discharge device, the connecting blocks 102 arranged on the outer circumference of the base 101 are mainly used to install and fix the electric rods 201. The number of the connecting blocks 102 is consistent with the number of the electric rods 201, and the number of the electric rods 201 is consistent with the number of the connecting rods 202. In detail, the connecting rods 202 are arranged at intervals around the side of the motor 3, and the extension rods 203 connect the connecting rods 202 and the motor 3 together.

[0042] like Figures 1 to 3 As shown, the outer cover 701 isolates the entire soil discharge working point from the outside world, and the entire soil discharge process is carried out inside the outer cover 701. A water spray nozzle can be installed on the inner side of the outer cover 701 according to actual conditions to settle the dust and impurities flying in the outer cover 701 due to soil discharge. In addition, water will flow into the soil discharge drilling position to cool the drill bit 403.

[0043] In order to facilitate the collection of the discharged soil, in this embodiment, a funnel-shaped receiving tray 601 is provided on the inner side wall of the base 101, and an inner hole 603 is opened at the bottom of the receiving tray 601, and the rotating column 401 is directly opposite to the inner hole 603. In specific implementation, the rotating column 401 will drill into the ground through the inner hole 603, and the rotating piece 402 will bring the soil out to the receiving tray 601, which is convenient for the operator to collect.

[0044] Based on the above configuration, as a preferred structure of the receiving tray 601, Figure 2 As shown, in this embodiment, a spiral pattern 602 is provided on the inner wall of the receiving tray 601, and a storage groove 1011 following the contour is provided on the base 101; the receiving tray 601 is rotatably connected to the inner wall of the base 101, and the receiving tray 601 is fixedly connected to the upper position of the rotating column 401 through a connecting component.

[0045] The rotating column 401 drives the receiving plate 601 to rotate through the connecting assembly, and the soil placed on the receiving plate 601 is transported to the storage tank 1011 through the spiral pattern 602 on the receiving plate 601.

[0046] Among them, Figure 4 As shown, the connecting assembly includes a fixing rod 502 and a mounting portion 501. The fixing sleeve 204 of the mounting portion 501 is installed at the upper position of the rotating column 401. The fixing rod 502 is in a 7 shape, one end of which is fixedly connected to the receiving plate 601, and the other end is fixedly connected to the mounting portion 501. At least two groups of fixing rods 502 are arranged.

[0047] During specific implementation, the rotating column 401 drives the fixed rod 502 to rotate, thereby driving the receiving plate 601 to rotate. In addition, in order to prevent the rotating column 401 from rotating too fast to affect the receiving plate 601, a reduction box is preferably installed in the mounting portion 501.

[0048] In order to facilitate the stability of the rotating column 401 when it moves up and down, Figure 2 As shown, in this embodiment, the end of the connecting rod 202 away from the electric rod 201 is rotatably connected to the rotating column 401 through a rotating sleeve 205, preferably through a bearing, to increase the stability of the rotating column 401 and the motor 3 when the electric rod 201 is adjusted up and down.

[0049] In addition, as preferably, Figure 3 As shown, the bottom surfaces of the connecting block 102 and the base 101 are provided with a plurality of friction grooves 8. After the soil discharge device is placed on the ground, the bottom surfaces of the connecting block 102 and the base 101 are in contact with the ground. The friction grooves 8 increase the friction between the connecting block 102 and the base 101 and the ground, thereby reducing shaking.

[0050] In summary, the soil discharge device can be used to drill holes and discharge soil before mine blasting, which reduces manual operations. It not only prevents the splashing soil and rock impurities from causing harm to surrounding personnel, but also makes it easier to collect the discharged soil.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A special drilling device for soft rock in open-pit mines, characterized by: The invention comprises a base (101) in the shape of an annulus, a plurality of connection blocks (102) fixedly arranged at intervals around the outer circumference of the base (101), an electric rod (201) arranged on the top surface of each connection block (102), a connection rod (202) arranged at the top end of the electric rod (201), an extension rod (203) arranged at the top of the connection rod (202), a motor (3) fixedly connected to one end of each extension rod (203) away from the electric rod (201) through a fixing sleeve (204), a rotating column (401) fixedly arranged at the end of the motor (3), a spiral rotating sheet (402) surrounding the circumference of the rotating column (401), and a drill bit (403) arranged at the bottom end of the rotating column (401); The end of the motor (3) is arranged downward, the end of the rotating column (401) is directly opposite to the center position of the base (101), the top of the base (101) is provided with an outer cover (701), and a sliding groove (702) cooperating with the connecting rod (202) is provided along the height direction of the outer cover (701).

2. The special drilling device for soft rock in open-pit mines according to claim 1, characterized in that: The inner side wall of the base (101) is provided with a receiving tray (601) in the shape of a funnel, and the bottom of the receiving tray (601) is provided with an inner hole (603); The rotating column (401) is directly opposite to the inner hole (603).

3. The special drilling device for soft rock in open-pit mines according to claim 2, characterized in that: The inner side wall of the receiving plate (601) is provided with a spiral pattern (602), and the base (101) is provided with a storage groove (1011) that follows the contour; The receiving plate (601) is rotatably connected to the inner wall of the base (101), and the receiving plate (601) is fixedly connected to the upper position of the rotating column (401) through a connecting assembly.

4. The special drilling device for soft rock in open-pit mines according to claim 3, characterized in that: The connection assembly comprises a fixing rod (502) and a mounting portion (501); the fixing sleeve (204) of the mounting portion (501) is mounted on the upper portion of the rotating column (401); the fixing rod (502) is in a 7-shape, one end of which is fixedly connected to the receiving plate (601) and the other end of which is fixedly connected to the mounting portion (501); and at least two groups of fixing rods (502) are provided.

5. The special drilling device for soft rock in open-pit mines according to claim 1, characterized in that: One end of the connecting rod (202) away from the electric rod (201) is rotatably connected to the rotating column (401) via a rotating sleeve (205).

6. The special drilling device for soft rock in open-pit mines according to claim 1, characterized in that: The drill bit (403) is detachably connected to the end of the rotating column (401) via a nut (404).

7. The special drilling device for soft rock in open-pit mines according to claim 1, characterized in that: The connection block (102) and the bottom surface of the base (101) are provided with a plurality of friction lines (8).

Images