CN203321324U - Underground coal mine seam drilling and cavitating device - Google Patents

Underground coal mine seam drilling and cavitating device Download PDF

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Publication number
CN203321324U
CN203321324U CN2013203601203U CN201320360120U CN203321324U CN 203321324 U CN203321324 U CN 203321324U CN 2013203601203 U CN2013203601203 U CN 2013203601203U CN 201320360120 U CN201320360120 U CN 201320360120U CN 203321324 U CN203321324 U CN 203321324U
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CN
China
Prior art keywords
cutting arm
transmission shaft
housing
coal mine
power transmission
Prior art date
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.)
Withdrawn - After Issue
Application number
CN2013203601203U
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Chinese (zh)
Inventor
赵继展
张俭
黑磊
张培河
孙四清
龙威成
牟全斌
陈冬冬
张阳
景兴鹏
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Xian Research Institute Co Ltd of CCTEG
Original Assignee
Xian Research Institute Co Ltd of CCTEG
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
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Priority to CN2013203601203U priority Critical patent/CN203321324U/en
Application granted granted Critical
Publication of CN203321324U publication Critical patent/CN203321324U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to an underground coal mine seam drilling and cavitating device. The gas collection effect can be improved by enlarging the drilling diameter, the drilling diameter can be theoretically enlarged infinitely according to a multi-time broaching technology, however, with the limit of power of a drilling machine and strength of a drilling tool in practice, multiple specifications of drill bits are required to be adopted, tripping is performed for multiple times to replace the drill bits for broaching, the process is complex, and the occupied time is long. The underground coal mine seam drilling and cavitating device is characterized by comprising a drill rod joint, a transmission shaft, a pressure-loaded bearing and a casing, wherein an L-shaped cutting arm is arranged in the casing, and the bending part of the cutting arm is fixed on the casing; one end of the transmission shaft is connected with the drill rod joint, the other end of the transmission shaft is movably connected with one end of the cutting arm through a state control connecting rod, and the other end of the cutting arm is arranged in a strip-shaped opening of the casing; and a reset spring is arranged on the transmission shaft. The underground coal mine seam drilling and cavitating device is simple in structure and can enlarge the drilling diameter in shorter time.

Description

The cave device is made in a kind of coal mine underground coal bed boring
Technical field
The utility model belongs to the coal bed drilling technical field, relates to a kind of coal mine underground coal bed boring and makes the cave device.
Background technology
Because coal seam permeability is generally lower, cause China's coal-mine enterprise to adopt common gas pumping method will within the limited extraction time, reach desirable effect very difficult, there is exigence in enterprise to the raising of extraction efficiency.
Increase bore diameter and can improve significantly the mash gas extraction effect, down-hole major diameter mash gas pumping drilling technology is promoted at present.But the one-step pore-creating large diameter borehole needs high-power rig and high strength drilling tool, and easily induces Gas Outburst in projecting coal bed, so the bore diameter of one-step pore-creating is restricted.Repeatedly counter-boring techniques can infinitely increase bore diameter in theory, but be subject to the restriction of rig power and drilling tool intensity in practice, bore diameter generally is confined in φ 300mm, need to adopt the drill bit of a plurality of specifications simultaneously, more bit change reaming repeatedly pulls out of hole, complex procedures, holding time is long, and practical operation is restricted.
The utility model content
Technical problem to be solved in the utility model is to provide and a kind ofly can enlarges bore diameter and the cave device is made in the simple coal mine underground coal bed boring of using method.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the cave device is made in a kind of coal mine underground coal bed boring, and its special feature is: described coal mine underground coal bed boring is made the cave device and is comprised tool joint, power transmission shaft, pressure-loaded bearing and housing; The cutting arm of " L " type is set in described housing, and the bending part of cutting arm is fixed on housing by bearing pin; In described housing, power transmission shaft is set, an end of power transmission shaft is connected with tool joint, and its other end is flexibly connected by an end of state control link and cutting arm, and the other end of cutting arm is arranged in the strip gab of housing; Back-moving spring is set on power transmission shaft, and the front end of housing arranges pressure-loaded bearing, and pressure-loaded bearing is connected with the righting base by bearing rotary joint, location drilling rod.
Interconnected passage is set in described tool joint, power transmission shaft, bearing pin and cutting arm, forms waterflood path, the delivery port of described waterflood path is positioned on cutting arm.
One end of described state control link is connected with power transmission shaft by clamp nut, and its other end is connected with cutting arm by small clevis pin with head.
Described righting base is connected with the location drilling rod by screw thread, and described location drilling rod is connected with the bearing rotary joint by screw thread, and described bearing rotary joint is connected with pressure-loaded bearing by screw thread.
Compared with prior art, the beneficial effects of the utility model are:
1. coal mine underground coal bed boring of the present utility model is made the cave device and is provided with cutting arm, driving cutting arm when power transmission shaft applies axial torque to housing take drive shaft axis and does the cutting that rotates in a circumferential direction as axle, can realize that diameter is greater than the cave of making of φ 300mm at the set depth of coal bed gas extraction boring, more bit change reaming, reach the anti-reflection effect of coal seam release, improve drilling gas extraction efficiency;
2. be provided with interconnected waterflood path in tool joint of the present utility model, power transmission shaft, bearing pin and cutting arm, in when work, by tool joint by water supply water conservancy diversion in drilling rod to waterflood path, from the delivery port ejection of cutting arm, realization washing away cinder;
3. be provided with pressure-loaded bearing in the utility model, this pressure-loaded bearing is arranged on housing, by the bearing rotary joint, with the location drilling rod, be connected, bear axial compression, realize that location drilling rod and righting base can be along with housing rotates simultaneously, weaken resistance when location drilling rod, righting base and housing together rotate, prevented the wearing and tearing when righting base rotates with housing.
4. to make the cave apparatus structure simple for the coal mine underground coal bed boring of the utility model, thereby can increase bore diameter within a short period of time, improves the mash gas extraction effect.
The accompanying drawing explanation
Describe the utility model in detail below in conjunction with drawings and embodiments:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the course of work schematic diagram in the utility model;
Fig. 3 is filling pipe schematic diagram in the utility model.
In figure: 1. righting base, 2. location drilling rod, 3. bearing rotary joint, 4. cutting arm, 5. bearing pin, 6. small clevis pin with head, 7. state control link, 8. clamp nut, 9. housing, 10. power transmission shaft, 11. tool joint, 12. pressure-loaded bearings, 13. back-moving springs, 14. filling pipes, 15. strip gabs.
The specific embodiment
As shown in Figure 1, the cave device is made in a kind of coal mine underground coal bed boring, comprise tool joint 11, power transmission shaft 10, pressure-loaded bearing 12 and housing 9, the cutting arm 4 of the interior setting of housing 9 " L " type, the bending part of cutting arm 4 is fixed on housing 9 by bearing pin, the interior power transmission shaft 10 that arranges of housing 9, back-moving spring 13 is set on power transmission shaft 10, one end of power transmission shaft 10 stretches out housing 9 and is connected with tool joint 11, its other end is flexibly connected by state control link 7 and an end of cutting arm 4, the other end of cutting arm 4 is arranged in the strip gab 15 of housing 9, like this, power transmission shaft 10 drives cutting arm 4 expansions or shrinks by state control link 7 under end thrust or pulling force effect.
The front end of housing 9 arranges pressure-loaded bearing 12, and righting base 1 is connected with location drilling rod 2 by screw thread, and location drilling rod 2 is connected with bearing rotary joint 3 by screw thread, and bearing rotary joint 3 is connected with pressure-loaded bearing 12 by screw thread.
One end of state control link 7 is fixedly connected with power transmission shaft 10 by clamp nut 8, and its other end is flexibly connected by small clevis pin with head 6 and cutting arm 4.
Referring to Fig. 4, in order to realize washing away the cooling and cinder of cutting arm 4, tool joint 11, power transmission shaft 10, bearing pin and cutting arm 4 be interior arranges interconnected passage, form waterflood path 14, the delivery port of waterflood path 14 is positioned on cutting arm 4, by tool joint 11 by the rotation of drilling rod with feed transmission of power to power transmission shaft 10, tool joint 11 simultaneously by the water supply water conservancy diversion to waterflood path 14, water supply is from the ejection of the delivery port of cutting arm 4, thereby realized the washing away of cooling and cinder of cutting arm 4.
Referring to Fig. 3, cave device operating principle is made in coal mine underground coal bed boring of the present utility model: tool joint 11 is connected on drilling rod, send in the hole in cave to be made, righting base 1 and hole wall are held out against, start working, drilling rod by tool joint 11 by rotary power and feed transmission of power to power transmission shaft 10, back-moving spring 13 on power transmission shaft 10 is feeding the effect lower compression of power, the state control link 7 be connected with power transmission shaft 10 is subject to axial force and advances vertically, the cutting arm 4 be flexibly connected with state control link 7 also advances thereupon vertically, power transmission shaft 10 drives housing 9 rotations simultaneously under the effect of rotary power.The bending part of cutting arm 4 is fixed on housing 9 by large bearing pin 5.Cutting arm 4 other ends stretch out that strip gab 15 is expanded gradually and along with housing 9 circumgyration incisions boring ribs are made cave; When making cave, tool joint 11 to filling pipe 14, realize to be supplied water water supply water conservancy diversion in drilling rod right, the washing away of the cooling and cinder of cutting arm 4.In the whole course of work, the pressure-loaded bearing 12 of housing 9 front ends bears axial compression, realize housing 9 rotation and location drilling rod 2 and righting base 1 do not rotate, avoiding locating when drilling rod 2, righting base 1 together rotate with housing 9 increases resistance, wearing and tearing while avoiding righting base 1 together to rotate simultaneously.

Claims (4)

1. the cave device is made in a coal mine underground coal bed boring, it is characterized in that: described coal mine underground coal bed boring is made the cave device and is comprised tool joint (11), power transmission shaft (10), pressure-loaded bearing (12) and housing (9); The cutting arm (4) of " L " type is set in described housing (9), and the bending part of cutting arm (4) is fixed on housing by bearing pin (5); Power transmission shaft (10) is set in described housing (9), one end of power transmission shaft (10) is connected with tool joint (11), its other end is flexibly connected by state control link (7) and an end of cutting arm (4), and the other end of cutting arm (4) is arranged in the strip gab (15) of housing (9); Back-moving spring (13) is set on power transmission shaft (10), and the front end of housing (9) arranges pressure-loaded bearing (12), and pressure-loaded bearing (12) is connected with righting base (1) by bearing rotary joint (3), location drilling rod (2).
2. the cave device is made in a kind of coal mine underground coal bed boring according to claim 1, it is characterized in that: in described tool joint (11), power transmission shaft (10), bearing pin (5) and cutting arm (4), interconnected passage is set, form waterflood path (14), the delivery port of described waterflood path (14) is positioned on cutting arm (4).
3. the cave device is made in a kind of coal mine underground coal bed boring according to claim 1 and 2, it is characterized in that: an end of described state control link (7) is connected with power transmission shaft (10) by clamp nut (8), and its other end is connected with cutting arm (4) by small clevis pin with head (6).
4. the cave device is made in a kind of coal mine underground coal bed boring according to claim 3, it is characterized in that: described righting base (1) is connected with location drilling rod (2) by screw thread, described location drilling rod (2) is connected with bearing rotary joint (3) by screw thread, and described bearing rotary joint (3) is connected with pressure-loaded bearing (12) by screw thread.
CN2013203601203U 2013-06-24 2013-06-24 Underground coal mine seam drilling and cavitating device Withdrawn - After Issue CN203321324U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013203601203U CN203321324U (en) 2013-06-24 2013-06-24 Underground coal mine seam drilling and cavitating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013203601203U CN203321324U (en) 2013-06-24 2013-06-24 Underground coal mine seam drilling and cavitating device

Publications (1)

Publication Number Publication Date
CN203321324U true CN203321324U (en) 2013-12-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013203601203U Withdrawn - After Issue CN203321324U (en) 2013-06-24 2013-06-24 Underground coal mine seam drilling and cavitating device

Country Status (1)

Country Link
CN (1) CN203321324U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334699A (en) * 2013-06-24 2013-10-02 中煤科工集团西安研究院 Coal mine underground coal bed drilling and cave-building device and method of use

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334699A (en) * 2013-06-24 2013-10-02 中煤科工集团西安研究院 Coal mine underground coal bed drilling and cave-building device and method of use
CN103334699B (en) * 2013-06-24 2015-04-08 中煤科工集团西安研究院有限公司 Coal mine underground coal bed drilling and cave-building device and method of use

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: XI AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY

Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI AN RESEARCH INSTITUTE

CP01 Change in the name or title of a patent holder

Address after: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82

Patentee after: Xi'an Research Institute, CCTEG

Address before: 710075 Xi'an high tech Industrial Development Zone, Shaanxi, Jin Jin Road, No. 82

Patentee before: China Coal Technology & Engineering Group Xi'an Research Institute

RGAV Abandon patent right to avoid regrant
AV01 Patent right actively abandoned

Granted publication date: 20131204

Effective date of abandoning: 20150408