CN110847819A - Directional adjusting device for mine drilling and adjusting method thereof - Google Patents
Directional adjusting device for mine drilling and adjusting method thereof Download PDFInfo
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- CN110847819A CN110847819A CN201911057586.4A CN201911057586A CN110847819A CN 110847819 A CN110847819 A CN 110847819A CN 201911057586 A CN201911057586 A CN 201911057586A CN 110847819 A CN110847819 A CN 110847819A
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- motor
- drilling
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- rod
- switch
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
Abstract
The invention relates to a directional adjusting device for mine drilling and an adjusting method thereof, wherein the directional adjusting device comprises a main body assembly, wherein the main body assembly comprises a fixed column, a connecting block, a base, a plate body, a fixed block, a sliding rod, a lifting assembly, a drilling assembly and a switch assembly; drive first connecting axle through the third motor and rotate, first connecting axle drives first gear revolve, and first gear drives second gear revolve in the bearing through the second connecting axle, and it is rotatory to drive the backup pad through the first body of rod during second gear revolve, drives the plate body through the second body of rod and rotates, drives drilling subassembly and lifting unit through fixed column and connecting block and rotates, adjusts the location to the position of drilling. When needing the probing, drive the connecting block downstream under the effect of lead screw, make the drilling rod drive the drill bit and be close to the drilling position, the effectual point that needs drilling to survey is adjusted in a flexible way on every side and is carried out the probing, need not the position about and from top to bottom of manual regulation rig, has reduced labourer's use intensity.
Description
Technical Field
The invention belongs to the field of mine drilling, and particularly relates to a directional adjusting device for mine drilling and an adjusting method thereof.
Background
Drilling is an important technical means in geological exploration work, and is a mechanical engineering technology of deep drilling is utilized to exploit natural resources at the bottom of the earth or the sea, or a section real situation of a stratum is adopted, a solid sample is captured to provide an experiment to obtain related data information, a drilling machine is used for drilling downwards from the earth surface, and a cylindrical borehole is formed in the stratum so as to identify and divide the stratum. The rock core, the mineral sample and the soil sample can be obtained from different depths in the drill hole for analysis and research, and the rock core, the mineral sample and the soil sample can be used for measuring the physical and mechanical properties and indexes of the rock and the soil layer to provide design requirements. At present, when a mine geology is overhauled, drilled and sampled, a user needs to manually adjust a drilling machine when using the drilling machine, then drilling operation is carried out on the positions of holes to be drilled on the periphery, and the drilling machine cannot be flexibly adjusted, so that the labor intensity of the user is increased.
Disclosure of Invention
Technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides a directional adjustment device for mine drilling and an adjustment method thereof.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that: a directional adjustment apparatus for mine drilling, comprising:
the main body assembly comprises a fixing column, a connecting block, a base, a plate body, a fixing block, a sliding rod, a lifting assembly, a drilling assembly and a switch assembly;
the driving assembly comprises a third motor, a first connecting shaft, a first gear, a second connecting shaft, a second gear, a first rod body, a second rod body, a supporting plate and a bearing, the third motor is installed on one side inside the base, one end of the first connecting shaft is connected with an output shaft of the third motor, the first gear is connected to one end of the first gear, the first gear is connected with the second gear in a meshed mode, one end of the first rod body is welded to the outer wall of the second gear, one side of the bottom of the supporting plate is welded to one end of the top of the first rod body, one end of the second rod body is welded to one side of the top of the supporting plate, and one end of the second rod body penetrates through the bottom of the plate body;
the sliding assembly comprises a sliding block, an annular sliding groove and a through groove.
As further preferable in the present technical solution: the one end that the base was kept away from to the fixed column runs through in the inside of connecting block, connecting block and fixed column sliding connection, the one end that is close to the base of fixed column welds in the top of the plate body.
As further preferable in the present technical solution: one side of fixed block welds in one side of plate body, the one end of slide bar welds in the top of fixed block, the one end that the fixed block was kept away from to the slide bar runs through the mount, slide bar and mount sliding connection.
As further preferable in the present technical solution: the quantity of slider sets up to two, two the mutual symmetric welding of slider is in the bottom of plate body, the upper surface of base is seted up to the annular spout, two the slider imbeds in the inside of annular spout, lead to the groove and set up the top of base, the logical groove is run through to the one end of the second body of rod.
As further preferable in the present technical solution: the lifting assembly comprises a screw rod, a box body and a second motor, the box body is welded on one side of the top of the plate body, the second motor is installed inside the box body, an output shaft of the second motor is welded at one end of the screw rod, and one end, far away from the second motor, of the screw rod penetrates through the connecting block.
As further preferable in the present technical solution: the drilling assembly comprises a first motor, a fixing frame, a sleeve, a drill rod and a drill bit, the fixing frame is welded on one side of the connecting block, the first motor is installed on the upper portion of the fixing frame, an output shaft of the first motor is connected to one end of the sleeve, one end, far away from the motor, of the sleeve is connected with the drill rod, and the drill bit is installed at one end of the bottom of the drill rod.
As further preferable in the present technical solution: one end of the second connecting shaft is connected with the second gear, one end, far away from the second gear, of the second connecting shaft is welded to the inner ring of the bearing, and the outer ring of the bearing is welded to the bottom of the inner wall of the base.
As further preferable in the present technical solution: the switch assembly comprises a first switch, a second switch and a third switch, wherein the power output end of the first switch is electrically connected with the power input end of the first motor, the power output end of the second switch is electrically connected with the power input end of the second motor, and the power output end of the third switch is electrically connected with the power input end of the third motor.
In addition, the invention also provides an adjusting method of the directional adjusting device for mine drilling, which comprises the following steps:
s1, starting a third motor through a third switch, wherein the third motor drives a first connecting shaft to rotate, the first connecting shaft drives a first gear to rotate, and the first gear rotates in a bearing through a second connecting shaft to drive a second gear to rotate;
s2, when the second gear rotates, the first rod body drives the supporting plate to rotate, and the second rod body drives the plate body to rotate;
s3, driving the drilling assembly and the lifting assembly to rotate by the plate body through the fixing column and the connecting block, and adjusting the drilling position, wherein the rotation adjusting angle of the plate body is 0-360 degrees;
s4, the second switch starts the second motor to rotate, the connecting rod moves downwards under the drive of the second motor and the lead screw, the connecting block drives the drilling assembly to move downwards to drill, the length of the lead screw above the connecting block is 150mm-220mm, and the distance between the drilling rod and the fixing column is 350mm-600 mm.
(III) advantageous effects
The invention has the beneficial effects that: drive first connecting axle through the third motor and rotate, first connecting axle drives first gear revolve, first gear drives second gear revolve in the bearing through the second connecting axle, it is rotatory to drive the backup pad through the first body of rod during second gear revolve, it rotates to drive the plate body through the second body of rod, drive drilling subassembly and lifting unit through fixed column and connecting block and rotate, adjust the location to the position of drilling, when needing the probing, drive the connecting block downstream under the effect of lead screw, make the drilling rod drive the drill bit and be close to the drilling position, effectual point nimble the regulation of surveying to needs the drilling on every side is drilld, need not the manual regulation rig and control and upper and lower position, the intensity of labour has been reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the internal structure of the base of the present invention;
fig. 4 is a schematic view of the chute structure of the present invention.
[ description of reference ]
10: a body assembly; 11: fixing a column; 12: connecting blocks; 13: a base; 14: a plate body; 15: a fixed block; 16: a slide bar; 20: a drilling assembly; 21: a first motor; 22: a fixed mount; 23: a sleeve; 24: a drill stem; 25: a drill bit; 30: a lifting assembly; 31: a screw rod; 32: a box body; 33: a second motor; 40: a drive assembly; 41: a third motor; 42: a first connecting shaft; 43: a first gear; 44: a second connecting shaft; 45: a second gear; 46: a first rod body; 47: a second rod body; 48: a support plate; 49: a bearing; 50: a sliding assembly; 51: a slider; 52: an annular chute; 53: a through groove; 60: a switch assembly; 61: a first switch; 62: a second switch; 63: and a third switch.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 4, the present invention provides a directional adjustment device for mine drilling, comprising: the main body assembly 10 comprises a fixed column 11, a connecting block 12, a base 13, a plate body 14, a fixed block 15, a sliding rod 16, a lifting assembly 30, a drilling assembly 20 and a switch assembly 60;
the driving assembly 40, the driving assembly 40 includes a third motor 41, a first connecting shaft 42, a first gear 43, a second connecting shaft 44, a second gear 45, a first rod 46, a second rod 47, a supporting plate 48 and a bearing 49, the third motor 41 is installed at one side of the inside of the base 13, one end of the first connecting shaft 42 is connected with an output shaft of the third motor 41, the first gear 43 is connected to one end of the first gear 43, the first gear 43 is connected with the second gear 45 in a meshing manner, one end of the first rod 46 is welded to the outer wall of the second gear 45, one side of the bottom of the supporting plate 48 is welded to one end of the top of the first rod 46, one end of the second rod 47 is welded to one side of the top of the supporting plate 48, and one end of the second rod 47 penetrates through the bottom of the plate body;
the sliding assembly 50, the sliding assembly 50 includes a sliding block 51, an annular sliding chute 52 and a through slot 53; one end of the fixing column 11, which is far away from the base 13, penetrates through the inside of the connecting block 12, the connecting block 12 is in sliding connection with the fixing column 11, one end of the fixing column 11, which is close to the base 13, is welded to the top of the plate body 14, through the arrangement, the connecting block 12 drives the drilling assembly 20 to move under the driving of the first motor 21 and the screw rod 31, and the fixing column 11 supports the drilling assembly 20; one side of the fixed block 15 is welded to one side of the plate body 14, one end of the sliding rod 16 is welded to the top of the fixed block 15, one end, far away from the fixed block 15, of the sliding rod 16 penetrates through the fixed frame 22, the sliding rod 16 is in sliding connection with the fixed frame 22, through the arrangement, when the drilling assembly 20 ascends and descends, the fixed frame 22 moves on the sliding rod 16 to support the fixed frame 22, and when the drilling assembly rotates, the fixed frame 22 can be fixed; the quantity of the slide blocks 51 is set to be two, the two slide blocks 51 are symmetrically welded at the bottom of the plate body 14, the annular sliding groove 52 is formed in the upper surface of the base 13, the two slide blocks 51 are embedded into the annular sliding groove 52, the through groove 53 is formed in the top of the base 13, one end of the second rod body 47 penetrates through the through groove 53, through the arrangement, when the plate body 14 rotates, the two slide blocks 51 are driven to slide in the annular sliding groove 52, the plate body 14 can be stable, meanwhile, the rotating speed can be reduced through the friction force between the slide blocks 51 and the annular sliding groove 52, and the adjusting precision of the drilling assembly 20 is improved; the lifting assembly 30 comprises a screw rod 31, a box body 32 and a second motor 33, the box body 32 is welded on one side of the top of the plate body 14, the second motor 33 is installed inside the box body 32, an output shaft of the second motor 33 is welded on one end of the screw rod 31, one end, far away from the second motor 33, of the screw rod 31 penetrates through the connecting block 12, through the arrangement, the box body 32 is used for protecting the second motor 33 from being damaged by the outside, and the second motor 33 drives the screw rod 31 to drive the connecting block 12 to move; the drilling assembly 20 comprises a first motor 21, a fixing frame 22, a sleeve 23, a drill rod 24 and a drill bit 25, the fixing frame 22 is welded on one side of the connecting block 12, the first motor 21 is installed on the upper portion of the fixing frame 22, an output shaft of the first motor 21 is connected to one end of the sleeve 23, one end, far away from the motor, of the sleeve 23 is connected with the drill rod 24, the drill bit 25 is installed at one end of the bottom of the drill rod 24, through the arrangement, the first motor 21 drives the drill rod 24 to rotate through the sleeve 23, the drill rod 24 drives the drill bit 25 to drill the ground, the fixing frame 22 fixes the first motor 21, and the position of the first motor 21 moving up; one end of the second connecting shaft 44 is connected with the second gear 45, one end of the second connecting shaft 44, which is far away from the second gear 45, is welded to the inner ring of the bearing 49, the outer ring of the bearing 49 is welded to the bottom of the inner wall of the base 13, and through the arrangement, under the action of the bearing 49 and the second connecting shaft 44, the first gear 43 can drive the second gear 45 to rotate; the switch assembly 60 includes a first switch 61, a second switch 62 and a third switch 63, a power output end of the first switch 61 is electrically connected to a power input end of the first motor 21, a power output end of the second switch 62 is electrically connected to a power input end of the second motor 33, a power output end of the third switch 63 is electrically connected to a power input end of the third motor 41, by the above arrangement, the first switch 61 performs on-off control on the starting of the first motor 21, the second switch 62 performs on-off control on the starting of the second motor 33, and the third switch 63 performs on-off control on the starting of the third motor 41.
In addition, the invention also provides an adjusting method of the directional adjusting device for mine drilling, which comprises the following steps:
s1, starting a third motor through a third switch, wherein the third motor drives a first connecting shaft to rotate, the first connecting shaft drives a first gear to rotate, and the first gear rotates in a bearing through a second connecting shaft to drive a second gear to rotate;
s2, when the second gear rotates, the first rod body drives the supporting plate to rotate, and the second rod body drives the plate body to rotate;
s3, driving the drilling assembly and the lifting assembly to rotate by the plate body through the fixing column and the connecting block, and adjusting the position of a drilled hole, wherein the rotation adjusting angle of the plate body is 20 degrees;
s4, the second switch starts the second motor to rotate, the connecting rod moves downwards under the driving of the second motor and the lead screw, the connecting block drives the drilling assembly to move downwards to drill, the length of the lead screw above the connecting block is 150mm, and the distance between the drill rod and the fixing column is 350 mm.
Working principle or structural principle, during the use, at first start third motor 41 through third switch 63, third motor 41 drives first connecting axle 42 and rotates, first connecting axle 42 drives first gear 43 and rotates, first gear 43 drives second gear 45 through second connecting axle 44 in bearing 49 and rotates, it is rotatory to drive backup pad 48 through first body of rod 46 during second gear 45 rotates, it rotates to drive plate body 14 through second body of rod 47, plate body 14 drives drilling subassembly 20 and lifting unit 30 through fixed column 11 and connecting block 12 and rotates, adjust the location to the position of drilling, when needing the probing, drive lead screw 31 through second motor 33 and rotate, drive connecting block 12 and remove downwards under the effect of lead screw 31, make drilling rod 24 drive drill bit 25 be close to the drilling position, drill.
Example 2
The invention provides an adjusting method of a directional adjusting device for mine drilling, which comprises the following steps:
s1, starting a third motor through a third switch, wherein the third motor drives a first connecting shaft to rotate, the first connecting shaft drives a first gear to rotate, and the first gear rotates in a bearing through a second connecting shaft to drive a second gear to rotate;
s2, when the second gear rotates, the first rod body drives the supporting plate to rotate, and the second rod body drives the plate body to rotate;
s3, driving the drilling assembly and the lifting assembly to rotate by the plate body through the fixing column and the connecting block, and adjusting the position of a drilled hole, wherein the rotation adjusting angle of the plate body is 20 degrees;
s4, the second switch starts the second motor to rotate, the connecting rod moves downwards under the driving of the second motor and the lead screw, the connecting block drives the drilling assembly to move downwards to drill, the length of the lead screw above the connecting block is 190mm, and the distance between the drill rod and the fixing column is 500 mm.
Example 3
The invention provides an adjusting method of a directional adjusting device for mine drilling, which comprises the following steps:
s1, starting a third motor through a third switch, wherein the third motor drives a first connecting shaft to rotate, the first connecting shaft drives a first gear to rotate, and the first gear rotates in a bearing through a second connecting shaft to drive a second gear to rotate;
s2, when the second gear rotates, the first rod body drives the supporting plate to rotate, and the second rod body drives the plate body to rotate;
s3, driving the drilling assembly and the lifting assembly to rotate by the plate body through the fixing column and the connecting block, and adjusting the position of a drilled hole, wherein the rotation adjusting angle of the plate body is 90 degrees;
s4, the second switch starts the second motor to rotate, the connecting rod moves downwards under the driving of the second motor and the lead screw, the connecting block drives the drilling assembly to move downwards to drill, the length of the lead screw above the connecting block is 180mm, and the distance between the drill rod and the fixing column is 400 mm.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A directional adjustment device for mine drilling, comprising:
the device comprises a main body component (10), wherein the main body component (10) comprises a fixing column (11), a connecting block (12), a base (13), a plate body (14), a fixing block (15), a sliding rod (16), a lifting component (30), a drilling component (20) and a switch component (60);
the driving assembly (40) comprises a third motor (41), a first connecting shaft (42), a first gear (43), a second connecting shaft (44), a second gear (45), a first rod body (46), a second rod body (47), a supporting plate (48) and a bearing (49), the third motor (41) is installed on one side of the inside of the base (13), one end of the first connecting shaft (42) is connected with an output shaft of the third motor (41), the first gear (43) is connected to one end of the first gear (43), the first gear (43) is meshed with the second gear (45) and connected, one end of the first rod body (46) is welded on the outer wall of the second gear (45), one side of the bottom of the supporting plate (48) is welded on one end of the top of the first rod body (46), one end of the second rod body (47) is welded on one side of the top of the supporting plate (48), one end of the second rod body (47) penetrates through the bottom of the plate body (14);
the sliding assembly (50) comprises a sliding block (51), an annular sliding groove (52) and a through groove (53).
2. The directional adjustment device for mine drilling according to claim 1, characterized in that: one end, far away from the base (13), of the fixing column (11) penetrates through the inside of the connecting block (12), the connecting block (12) is connected with the fixing column (11) in a sliding mode, and one end, close to the base (13), of the fixing column (11) is welded to the top of the plate body (14).
3. The directional adjustment device for mine drilling according to claim 1, characterized in that: one side of fixed block (15) welds in one side of plate body (14), the one end of slide bar (16) welds in the top of fixed block (15), the one end that fixed block (15) were kept away from in slide bar (16) runs through mount (22), slide bar (16) and mount (22) sliding connection.
4. The directional adjustment device for mine drilling according to claim 1, characterized in that: the quantity of slider (51) sets up to two, two slider (51) mutual symmetric welding is in the bottom of plate body (14), the upper surface in base (13) is seted up in annular spout (52), two slider (51) imbeds in the inside of annular spout (52), lead to groove (53) and set up the top in base (13), logical groove (53) are run through to the one end of the second body of rod (47).
5. The directional adjustment device for mine drilling according to claim 1, characterized in that: lifting unit (30) include lead screw (31), box body (32) and second motor (33), box body (32) weld in the top one side of plate body (14), the inside in box body (32) is installed in second motor (33), the output shaft of second motor (33) welds in the one end of lead screw (31), the one end that second motor (33) were kept away from in lead screw (31) runs through in connecting block (12).
6. The directional adjustment device for mine drilling according to claim 1, characterized in that: drilling subassembly (20) include first motor (21), mount (22), sleeve (23), drilling rod (24) and drill bit (25), mount (22) weld in one side of connecting block (12), first motor (21) are installed on the upper portion of mount (22), the output shaft of first motor (21) is connected in the one end of sleeve (23), the one end that the motor was kept away from in sleeve (23) is connected with drilling rod (24), drill bit (25) are installed in the bottom one end of drilling rod (24).
7. The directional adjustment device for mine drilling according to claim 1, characterized in that: one end of the second connecting shaft (44) is connected with the second gear (45), one end, far away from the second gear (45), of the second connecting shaft (44) is welded to an inner ring of the bearing (49), and an outer ring of the bearing (49) is welded to the bottom of the inner wall of the base (13).
8. The directional adjustment device for mine drilling according to claim 1, characterized in that: the switch assembly (60) comprises a first switch (61), a second switch (62) and a third switch (63), wherein a power output end of the first switch (61) is electrically connected with a power input end of the first motor (21), a power output end of the second switch (62) is electrically connected with a power input end of the second motor (33), and a power output end of the third switch (63) is electrically connected with a power input end of the third motor (41).
9. An adjusting method of a directional adjusting device for mine drilling is characterized by comprising the following steps:
s1, starting a third motor through a third switch, wherein the third motor drives a first connecting shaft to rotate, the first connecting shaft drives a first gear to rotate, and the first gear rotates in a bearing through a second connecting shaft to drive a second gear to rotate;
s2, when the second gear rotates, the first rod body drives the supporting plate to rotate, and the second rod body drives the plate body to rotate;
s3, driving the drilling assembly and the lifting assembly to rotate by the plate body through the fixing column and the connecting block, and adjusting the drilling position, wherein the rotation adjusting angle of the plate body is 0-360 degrees;
s4, the second switch starts the second motor to rotate, the connecting rod moves downwards under the drive of the second motor and the lead screw, the connecting block drives the drilling assembly to move downwards to drill, the length of the lead screw above the connecting block is 150mm-220mm, and the distance between the drilling rod and the fixing column is 350mm-600 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911057586.4A CN110847819A (en) | 2019-11-01 | 2019-11-01 | Directional adjusting device for mine drilling and adjusting method thereof |
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| CN201911057586.4A CN110847819A (en) | 2019-11-01 | 2019-11-01 | Directional adjusting device for mine drilling and adjusting method thereof |
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| CN110847819A true CN110847819A (en) | 2020-02-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006689A (en) * | 2021-04-08 | 2021-06-22 | 赵生林 | Rapid drilling device and drilling method for resource exploration |
| CN113187389A (en) * | 2021-05-14 | 2021-07-30 | 河南工程学院 | Directional drilling machine for detecting thickness of three-soft coal seam and using method thereof |
| CN113294168A (en) * | 2021-07-07 | 2021-08-24 | 青岛市地铁四号线有限公司 | Subway is built with TBM end well strutting arrangement for excavating equipment |
| CN115506359A (en) * | 2022-09-20 | 2022-12-23 | 安徽宏源电力建设投资有限公司 | Equipment and method for excavation of transmission tower foundation pit in hilly area |
| CN117386297A (en) * | 2023-12-13 | 2024-01-12 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Geological drilling righting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113006689A (en) * | 2021-04-08 | 2021-06-22 | 赵生林 | Rapid drilling device and drilling method for resource exploration |
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| CN113187389B (en) * | 2021-05-14 | 2023-10-20 | 河南工程学院 | Directional drilling machine for detecting thickness of three-soft coal seam and use method thereof |
| CN113294168A (en) * | 2021-07-07 | 2021-08-24 | 青岛市地铁四号线有限公司 | Subway is built with TBM end well strutting arrangement for excavating equipment |
| CN113294168B (en) * | 2021-07-07 | 2022-08-16 | 青岛市地铁四号线有限公司 | Subway is built with TBM end well strutting arrangement for excavating equipment |
| CN115506359A (en) * | 2022-09-20 | 2022-12-23 | 安徽宏源电力建设投资有限公司 | Equipment and method for excavation of transmission tower foundation pit in hilly area |
| CN117386297A (en) * | 2023-12-13 | 2024-01-12 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Geological drilling righting device |
| CN117386297B (en) * | 2023-12-13 | 2024-02-23 | 山东省地质矿产勘查开发局第五地质大队（山东省第五地质矿产勘查院） | Geological drilling righting device |
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