CN112647856A - Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection - Google Patents

Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection Download PDF

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Publication number
CN112647856A
CN112647856A CN202011574337.5A CN202011574337A CN112647856A CN 112647856 A CN112647856 A CN 112647856A CN 202011574337 A CN202011574337 A CN 202011574337A CN 112647856 A CN112647856 A CN 112647856A
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CN
China
Prior art keywords
support
guide rail
drilling machine
drilling
switchable
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011574337.5A
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Chinese (zh)
Inventor
邓志刚
赵善坤
苏振国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shijiazhuang Molong Coal Mine Equipment Co ltd
China Coal Research Institute CCRI
Original Assignee
Shijiazhuang Molong Coal Mine Equipment Co ltd
China Coal Research Institute CCRI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shijiazhuang Molong Coal Mine Equipment Co ltd, China Coal Research Institute CCRI filed Critical Shijiazhuang Molong Coal Mine Equipment Co ltd
Priority to CN202011574337.5A priority Critical patent/CN112647856A/en
Publication of CN112647856A publication Critical patent/CN112647856A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/003Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/006Means for anchoring the drilling machine to the ground
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

The embodiment of the invention discloses a drilling machine which can be used for detecting a drilling cutting method and is supported by a plurality of support pieces in a switchable manner. The drilling machine provided by the embodiment of the invention can use corresponding supporting structures according to different construction environments, and various supporting structures are convenient to switch.

Description

Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection
Technical Field
The invention relates to the technical field of drilling machine equipment, in particular to a drilling machine with multiple support pieces capable of being supported in a switchable mode and capable of being used for detecting a drilling cutting method.
Background
Under different construction environments, the angle and the height of the drilling machine need to be properly adjusted by means of a supporting structure so as to meet the drilling requirement.
However, the existing drilling machine is single in supporting structure and cannot adapt to complex construction environments, and meanwhile, the problems that the supporting structure is not firm and the movement is not stable exist in the drilling process, so that the problems that the drilling is inaccurate, the drilling effect is poor and the like are caused, and the drilling efficiency is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides a drilling machine with multiple support pieces capable of being supported in a switching mode and capable of being used for detecting a drilling cutting method.
The drilling machine with multiple support members capable of being supported in a switching mode and capable of being used for the detection of the drilling cuttings method comprises: a guide rail; the coal dust collector is movably arranged on the guide rail;
the control device is connected with the pulverized coal collector; and the upright post support, the multi-leg support and the air leg support can be switchably connected with the guide rail and are positioned below the guide rail.
According to the embodiment of the invention, the drilling machine comprises three support structures including the upright post support, the multi-leg support and the air leg support, and the three support structures are connected with a guide rail in the drilling machine in a switchable mode. Therefore, the drilling machine can use the corresponding supporting structures according to different construction environments, and the multiple supporting structures are convenient to switch, so that the drilling machine can stably run under the multiple construction environments, and the drilling efficiency is improved.
In some embodiments, the guide rail is provided with a first through hole, the pillar support includes a first support and a second support, the first support is inserted into the first through hole, the first support is connected to the guide rail, and the first support is movably sleeved on the second support.
In some embodiments, the column support further comprises a telescopic member, one end of the telescopic member is provided on the second support member, and the other end of the telescopic member is provided on the guide rail.
In some embodiments, the system further comprises a track support disposed below the mast support, the track support being coupled to the mast support.
In some embodiments, the track support includes a track and a shoe disposed on the track, and the second support is disposed on the shoe.
In some embodiments, the multi-leg support comprises a plurality of support legs, the guide rail is provided with a plurality of first connecting portions, and the upper ends of the plurality of support legs are connected with the plurality of first connecting portions in a one-to-one correspondence and in a rotatable manner.
In some embodiments, the support leg comprises a third support member and a fourth support member, the upper end of the third support member is rotatably connected to the first connecting portion, and the third support member is movably sleeved on the fourth support member.
In some embodiments, the first connecting portion is provided with a first pin hole and a first limiting groove, the upper end of the third supporting member is connected to the first pin hole through a first pin shaft, and the upper end of the third supporting member can freely rotate in the first limiting groove through a second pin shaft.
In some embodiments, the guide rail is provided with a second through hole, the drilling machine further comprises a support rod, the support rod is arranged in the second through hole, and the upper end of the air leg support is rotatably connected with the guide rail.
In some embodiments, the pneumatic leg support comprises a pneumatic cylinder and a telescoping member rotatably connected at an upper end thereof to the guide rail, the telescoping member being telescopically connected to the pneumatic cylinder.
Drawings
FIG. 1 is a schematic view of a drilling rig according to one embodiment of the present invention.
Fig. 2 is a schematic view of a drilling rig according to another embodiment of the invention.
Fig. 3 is a schematic view of a drilling rig according to yet another embodiment of the invention.
Fig. 4 is a schematic view of a drilling rig according to yet another embodiment of the invention.
Reference numerals:
the coal dust collector comprises a drilling machine 100, a supporting rod 101, a guide rail 1, a first through hole 11, a clamping piece 12, a first connecting portion 13, a first pin hole 14, a first limiting groove 15, a second through hole 16, a coal dust collector 2, a control device 3, an upright post supporting piece 4, a first supporting piece 41, a second supporting piece 42, an expansion piece 43, a multi-leg supporting piece 5, a supporting leg 51, a third supporting piece 511, a fourth supporting piece 512, a first pin shaft 513, a second pin shaft 514, a second pin hole 515, a third pin hole 516, an air leg supporting piece 6, an air cylinder 61, an expansion part 62, an expansion pipe 621, a crawler supporting piece 7, a crawler 71 and a crawler plate 72.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 4, a drilling machine 100 for cuttings method detection, which is switchably supported by a plurality of supports according to an embodiment of the present invention, includes a guide rail 1, a pulverized coal collector 2, a control device 3, a column support 4, a multi-leg support 5, and a gas-leg support 6.
The coal dust collector 2 is movably arranged on the guide rail 1, and the control device 3 is connected with the coal dust collector 2.
The column support 4, the multi-legged support 5 and the gas-legged support 6 are switchably connectable to the guide rail 1 and are located below the guide rail 1.
Specifically, as shown in fig. 1 to 4, the guide rail 1 is horizontally arranged in the left-right direction, the pulverized coal collector 2 is movably arranged on the guide rail 1 in the left-right direction, the pulverized coal collector 2 can be positioned above the guide rail 1, and the control device 3 is connected with the pulverized coal collector 2 and is used for starting and closing the pulverized coal collector 2.
One of the upright support 4, the multi-legged support 5 and the gas-legged support 6 can be selected according to different construction environments, and is located below the guide rail 1 and detachably connected with the guide rail 1, so that the drilling machine 100 of the embodiment can adapt to various construction environments, and the drilling machine 100 of the embodiment can be rapidly switched among the upright support 4, the multi-legged support 5 and the gas-legged support 6, which is beneficial to improving the working efficiency of the drilling machine 100 and saving time and cost.
Therefore, the drilling machine 100 of the invention has the advantages that the corresponding support structure can be used according to different construction environments, and the switching of various support structures is convenient.
In some embodiments, as shown in fig. 1, the guide rail 1 is provided with a first through hole 11, the pillar support 4 includes a first support 41 and a second support 42, the first support 41 is disposed in the first through hole 11, the first support 41 is connected to the guide rail 1, and the first support 41 is movably sleeved on the second support 42.
As shown in fig. 1, the second supporting member 42 is a round bar structure, the lower end of the second supporting member 42 can be fixed on the ground, the first supporting member 41 is a round bar structure, and the first supporting member 41 can be movably sleeved on the second supporting member 42 along the up-down direction. Through holes (not shown) are formed in the peripheral wall of the first support member 41, the clamping piece 12 is arranged on the guide rail 1, threaded holes are formed in the clamping piece 12, when the first support member 41 moves to a proper position in the vertical direction, bolts can sequentially penetrate through the threaded holes in the clamping piece 12 and the through holes in the peripheral wall of the first support member 41, and the bolts abut against the second support member 42. This secures the first support 41 to the second support 42, i.e. the guide rail 1 to the second support 42.
In some embodiments, as shown in fig. 1, the pillar support 4 further includes a telescopic member 43, one end of the telescopic member 43 (e.g., the lower end of the telescopic member 43 in fig. 1) is disposed on the second support member 42, and the other end of the telescopic member 43 (e.g., the upper end of the telescopic member 43 in fig. 1) is disposed on the guide rail 1. Thus, when the guide rail 1 moves in the up-down direction, the expansion member 43 is used to connect the second support member 42 and the guide rail 1, and the guide rail 1 can be more stable during the movement.
In some embodiments, as shown in fig. 2, the drilling rig 100 further includes track supports 7, the track supports 7 being disposed below the mast supports 4, the track supports 7 being connected to the mast supports 4. Therefore, the crawler support 7 can drive the drilling machine 100 to move freely in a construction site, and the working efficiency of the drilling machine 100 is improved.
In some embodiments, as shown in FIG. 2, track support 7 includes a track 71 and a shoe 72 disposed on track 71, and second support 42 is disposed on shoe 72. Specifically, the lower end of the second support member 42 may be fixed to the track shoe 72, and the track support member 7 may drive the pillar support 4 and the drilling machine 100 installed on the pillar support 4 to move freely in the construction site, so as to improve the working efficiency of the drilling machine 100.
In some embodiments, as shown in fig. 3, the multi-leg supporter 5 includes a plurality of supporting legs 51, a plurality of first coupling portions 13 are provided on the guide rail 1, and upper ends of the plurality of supporting legs 51 are coupled to the plurality of first coupling portions 13 in a one-to-one correspondence and rotatably. Specifically, the lower ends of the plurality of support legs 51 are provided on the ground, and the drilling machine 100 of the present invention can freely adjust the support points of the plurality of support legs 51 according to the difference of construction environments, so that the drilling machine 100 of the present invention can stably operate in complicated terrains.
In some embodiments, as shown in fig. 3, the supporting leg 51 includes a third supporting member 511 and a fourth supporting member 512, the upper end of the third supporting member 511 is rotatably connected to the first connecting portion 13, and the third supporting member 511 is movably sleeved on the fourth supporting member 512.
Specifically, the fourth support 512 is a round bar structure, at least a part of the third support 511 is a round tube structure, and the third support 511 is sleeved on the fourth support 512 in a movable manner along the axial direction of the fourth support 512, so that the length of the support leg 51 can be freely adjusted according to different construction sites, that is, the height of the guide rail 1 can be freely adjusted, and the drilling machine 100 can stably run in complex terrains.
In some embodiments, the first connecting portion 13 is provided with a first pin hole 14 and a first limiting groove 15, the upper end of the third supporting member 511 is connected to the first pin hole 14 through a first pin 513, and the second pin 514 limits the third supporting member 511 to freely rotate in the first limiting groove 15. Specifically, the upper end of the third supporting member 511 is provided with a second pin hole 515 and a third pin hole 516, the second pin hole 515 and the first pin hole 14 are correspondingly arranged, and the third supporting member 511 is rotatably connected with the first connecting portion 13 by the first pin 513 passing through the second pin hole 515 and the first pin hole 14 in sequence. The third pin hole 516 and the first limiting groove 15 are correspondingly arranged, and the second pin shaft 514 sequentially passes through the third pin hole 516 and the first limiting groove 15, so that the first limiting groove 15 limits the rotation angle of the third supporting member 511, which is beneficial to improving the stability of the drilling machine 100.
In some embodiments, as shown in fig. 4, the guide rail 1 is provided with a second through hole 16, the drilling machine 100 further comprises a support rod 101, the support rod 101 is inserted into the second through hole 16, and the support rod 101 is connected with the guide rail 1. The upper end of the air leg support 6 is rotatably connected to the guide rail 1. Specifically, the lower end of the gas leg support 6 may be fixed to the ground, and the lower end of the support rod 101 may also be fixed to the ground, whereby the gas leg support 6 and the support rod 101 are engaged with each other, so that the stability of the drilling machine 100 is improved.
In some embodiments, as shown in fig. 4, the gas leg support 6 comprises a cylinder 61 and a telescopic member 62, the upper end of the telescopic member 62 is rotatably connected with the guide rail 1, and the telescopic member 62 is telescopically connected with the cylinder 61.
Specifically, as shown in fig. 4, the telescopic member 62 is hollow inside, a telescopic tube 621 is provided in the telescopic member 62, and the air cylinder 61 is connected to the telescopic tube 621, and the air cylinder 61 can extend and retract the telescopic tube 621 to and from the telescopic member 62.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A drilling machine with multiple support members and switchable supports and capable of being used for drilling cuttings method detection is characterized by comprising:
a guide rail;
the coal dust collector is movably arranged on the guide rail;
the control device is connected with the pulverized coal collector; and
the device comprises a stand column support, a multi-leg support and an air leg support, wherein the stand column support, the multi-leg support and the air leg support can be switchably connected with the guide rail and are positioned below the guide rail.
2. The drilling machine with multiple switchable supports and capable of being used for drilling cuttings method detection according to claim 1, wherein a first through hole is formed in the guide rail, the stand support comprises a first support and a second support, the first support is arranged in the first through hole in a penetrating mode, the first support is connected with the guide rail, and the first support is movably sleeved on the second support.
3. The drilling machine with multiple support switchable supports and capable of being used for drillings detection according to claim 2, wherein the column support further comprises a telescopic member, one end of the telescopic member is arranged on the second support, and the other end of the telescopic member is arranged on the guide rail.
4. The drilling machine with multiple support switchable supports for cuttings method detection according to claim 3, further comprising a track support disposed below the column support, the track support being connected to the column support.
5. The drilling rig with multiple support switchable supports for cuttings method testing of claim 4, wherein the track support comprises a track and a track shoe disposed on the track, and the second support is disposed on the track shoe.
6. The drilling machine with multiple support pieces switchably supported and capable of being used for drillings detection according to claim 1, wherein the multiple support pieces comprise multiple support legs, the guide rail is provided with multiple first connecting portions, and the upper ends of the multiple support legs are connected with the multiple first connecting portions in a one-to-one correspondence and in a rotatable manner.
7. The drilling machine with multiple support members switchable and supported for drillings detection according to claim 6, wherein the support legs comprise a third support member and a fourth support member, the upper end of the third support member is rotatably connected with the first connecting portion, and the third support member is movably sleeved on the fourth support member.
8. The drilling machine capable of being used for detecting a drilling cutting method and provided with the switchable support of the multiple support pieces according to claim 7, wherein the first connecting portion is provided with a first pin hole and a first limiting groove, the upper end of the third support piece is connected with the first pin hole through a first pin shaft, and the upper end of the third support piece can freely rotate in the first limiting groove through a second pin shaft.
9. The drilling machine capable of being used for detecting the drilling cutting method and provided with the switchable support of the multiple supports according to claim 6, wherein the guide rail is provided with a second through hole, the drilling machine further comprises a support rod, the support rod is arranged in the second through hole, and the upper end of the air leg support is rotatably connected with the guide rail.
10. The drilling machine capable of being used for detecting the drilling cuttings method and provided with the multiple support pieces in a switchable mode according to claim 8, wherein the air leg support piece comprises an air cylinder and a telescopic component, the upper end of the telescopic component is rotatably connected with the guide rail, and the telescopic component is telescopically connected with the air cylinder.
CN202011574337.5A 2020-12-28 2020-12-28 Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection Pending CN112647856A (en)

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CN202011574337.5A CN112647856A (en) 2020-12-28 2020-12-28 Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection

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CN202011574337.5A CN112647856A (en) 2020-12-28 2020-12-28 Drilling machine with multiple support pieces capable of being switched and supported and capable of being used for drilling cutting method detection

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2544318A1 (en) * 2006-03-15 2007-09-15 Xtreme Coil Drilling Corp. Mobile drilling rig with replaceable dolly
CN201883938U (en) * 2010-11-25 2011-06-29 平顶山市铁福来机电设备有限公司 Multidirectional hydraulic deep hole drill carriage
CN204357360U (en) * 2014-12-18 2015-05-27 平顶山冠宏矿山技术装备有限公司 A kind of multi-angle rotary support of coal mine drilling machine
CN208122770U (en) * 2018-03-16 2018-11-20 河北菲克森煤矿机械制造有限公司 A kind of wirerope cylinder frame cylindrical drill machine
WO2019165511A1 (en) * 2018-03-02 2019-09-06 Intelligent Drilling Applications & Technology Pty Ltd Drilling tool replacement apparatus
CN110242280A (en) * 2019-07-09 2019-09-17 煤炭科学技术研究院有限公司 A kind of intelligent detecting method and special drilling machine of drilling cuttings method special project drilling machine
CN110306936A (en) * 2019-07-09 2019-10-08 煤炭科学技术研究院有限公司 A kind of drilling cuttings method special project drilling machine
CN110761711A (en) * 2019-10-08 2020-02-07 珠海市英格尔特种钻探设备有限公司 Portable full-hydraulic tunnel drilling machine capable of switching feed force and drilling angle in modularized mode
CN110821400A (en) * 2019-12-13 2020-02-21 安徽宏昌机电装备制造有限公司 Multifunctional pneumatic crawler-type drilling machine
CN210239579U (en) * 2019-06-04 2020-04-03 天津市九方煤矿机械制造有限公司 Pneumatic frame column type drilling machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2544318A1 (en) * 2006-03-15 2007-09-15 Xtreme Coil Drilling Corp. Mobile drilling rig with replaceable dolly
CN201883938U (en) * 2010-11-25 2011-06-29 平顶山市铁福来机电设备有限公司 Multidirectional hydraulic deep hole drill carriage
CN204357360U (en) * 2014-12-18 2015-05-27 平顶山冠宏矿山技术装备有限公司 A kind of multi-angle rotary support of coal mine drilling machine
WO2019165511A1 (en) * 2018-03-02 2019-09-06 Intelligent Drilling Applications & Technology Pty Ltd Drilling tool replacement apparatus
CN208122770U (en) * 2018-03-16 2018-11-20 河北菲克森煤矿机械制造有限公司 A kind of wirerope cylinder frame cylindrical drill machine
CN210239579U (en) * 2019-06-04 2020-04-03 天津市九方煤矿机械制造有限公司 Pneumatic frame column type drilling machine
CN110242280A (en) * 2019-07-09 2019-09-17 煤炭科学技术研究院有限公司 A kind of intelligent detecting method and special drilling machine of drilling cuttings method special project drilling machine
CN110306936A (en) * 2019-07-09 2019-10-08 煤炭科学技术研究院有限公司 A kind of drilling cuttings method special project drilling machine
CN110761711A (en) * 2019-10-08 2020-02-07 珠海市英格尔特种钻探设备有限公司 Portable full-hydraulic tunnel drilling machine capable of switching feed force and drilling angle in modularized mode
CN110821400A (en) * 2019-12-13 2020-02-21 安徽宏昌机电装备制造有限公司 Multifunctional pneumatic crawler-type drilling machine

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