CN111188573A - Tunnel top drilling device - Google Patents
Tunnel top drilling device Download PDFInfo
- Publication number
- CN111188573A CN111188573A CN202010137758.5A CN202010137758A CN111188573A CN 111188573 A CN111188573 A CN 111188573A CN 202010137758 A CN202010137758 A CN 202010137758A CN 111188573 A CN111188573 A CN 111188573A
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- CN
- China
- Prior art keywords
- electric hammer
- tunnel top
- fixing plate
- drilling apparatus
- lifting mechanism
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 238000004804 winding Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
- E21B21/015—Means engaging the bore entrance, e.g. hoods for collecting dust
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
Landscapes
- 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 invention discloses a tunnel top drilling device which comprises a lifting mechanism with adjustable height and an automatic drilling mechanism with an electric hammer, wherein a position sensor for detecting the height of the electric hammer is also arranged on the automatic drilling mechanism, and the automatic drilling mechanism is connected with the lifting mechanism through a buffer mechanism. During actual manufacturing, the buffer mechanism is a plurality of buffer springs which are evenly and fixedly arranged on the connecting plate. In order to improve the working efficiency, the automatic drilling mechanism comprises an electric hammer fixing plate, the electric hammer is arranged on the electric hammer fixing plate at intervals in two stations, a reference rod is arranged on the electric hammer fixing plate between the two stations, a position sensor is arranged at the top of the reference rod, and a camera is arranged on the reference rod below the position sensor. The invention has smart structure and convenient use, can meet the top punching requirements of spaces with different heights and has wide application range; when in work, two holes can be drilled and broken simultaneously; through high definition digtal camera and position detection sensor, realize the accurate positioning of drilling position.
Description
Technical Field
The invention relates to drilling equipment, in particular to a tunnel top drilling device.
Background
Tunnels are engineering buildings buried in the ground, are a form of utilizing underground space by human beings, and can be generally divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels and the like. After the construction of these tunnels, decoration or lighting needs to be installed on the top of the tunnel, and it is essential to install these facilities and drill holes on the top of the tunnel.
Drilling is carried out at the top of the tunnel, an operator is required to stand on the frame to perform overhead operation, dust falling and other phenomena can also occur in the drilling process, the labor intensity of operators is high, and the working efficiency is low.
Disclosure of Invention
The invention aims to provide a tunnel top drilling device which can greatly improve the working efficiency.
In order to achieve the purpose, the invention can adopt the following technical scheme:
the tunnel top drilling device comprises a lifting mechanism with adjustable height and an automatic drilling mechanism with an electric hammer, wherein the automatic drilling mechanism is arranged above the lifting mechanism, and the automatic drilling mechanism is also provided with a position sensor for detecting the height of the electric hammer.
The automatic drilling mechanism is connected with the lifting mechanism through a buffer mechanism. During actual manufacturing, the buffer mechanisms are a plurality of buffer springs which are evenly and fixedly arranged on the connecting plate.
The automatic drilling mechanism comprises an electric hammer fixing plate, and the electric hammer is arranged on the electric hammer fixing plate at intervals in two stations; and a reference rod is arranged on the electric hammer fixing plate between the two stations of the electric hammer, the position sensor is arranged at the top of the reference rod, and a camera is arranged on the reference rod below the position sensor.
The distance between the two station electric hammers is adjustable; the lower part of each electric hammer is sleeved with a dust collecting cover.
The electric hammer position adjusting assembly is arranged below the electric hammer fixing plate and comprises a stepping motor, and the stepping motor drives the electric hammer on the two stations to be close to or far away from the electric hammer through a linear motion mechanism.
The lifting mechanism comprises an installation base and a plurality of sections of supporting tubes fixedly arranged on the installation base, the supporting tubes are sequentially overlapped and sleeved together, and the lifting mechanism is used for lifting or lowering the supporting tubes.
The lifting mechanism comprises a driving motor and a main winding drum which is arranged on the mounting base and connected with the driving motor, transition winding drums are respectively arranged on the outer side walls of the sections of outer sleeve supporting tubes, fixed pulleys corresponding to the winding drums are arranged at the tops of the sections of outer sleeve supporting tubes, fixed blocks are arranged at the bottoms of the outer sides of the innermost layer supporting tubes, and one ends of the fixed blocks are fixedly connected with the main winding drum through steel wire pull ropes fixedly connected with the fixed blocks sequentially after passing through each fixed pulley and the transition winding drum.
A guide mechanism is arranged between two adjacent sections of the supporting pipes; a manual crank is arranged on the outer side of the main winding drum
The multiple supporting tubes are square tubes.
The invention has the advantages of ingenious structure, convenient use, wide application range and capability of meeting the top punching requirements of spaces with different heights; when the drilling tool works, two holes can be drilled simultaneously, and the working efficiency is high; through high definition digtal camera and position detection sensor, realize the accurate positioning of drilling position.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view of the elevating mechanism in fig. 1.
FIG. 3 is a cross-sectional view of the multi-segmented support tube of FIG. 2.
Fig. 4 is an enlarged view of the automatic drilling mechanism of fig. 1.
Detailed Description
As shown in figure 1, the tunnel top drilling device comprises a lifting mechanism I with adjustable height and an automatic drilling mechanism II with an electric hammer, wherein the automatic drilling mechanism II is arranged above the lifting mechanism and is connected with the lifting mechanism I through a buffer mechanism III.
Specifically, the lifting mechanism i of the present invention is shown in fig. 2 and 3, and comprises a mounting base 11 and a square outer sleeve 12 fixed on the mounting base 11, wherein three sections of square support tubes 13-1, 13-2 and 13-3 are sequentially overlapped in the outer sleeve 12, and the three sections of support tubes are driven by a lifting mechanism to be raised or lowered so as to meet the punching requirements of spaces with different heights;
the lifting mechanism adopted by the invention comprises a driving motor 14 and a main winding drum 15 which is arranged on a mounting base 11 and connected with the driving motor 14, transition winding drums 16-1 and 16-2 are respectively arranged on the outer side walls of the bottoms of square supporting pipes 13-1 and 13-2, a fixed block 17 is arranged at the bottom of the outer side of the innermost supporting pipe 13-3, fixed pulleys 18-1, 18-2 and 18-3 corresponding to the winding drums are arranged at the top of the supporting pipe, and a steel wire pull rope 19 with one end fixedly connected with the fixed block 17 is sequentially wound around each fixed pulley and each transition winding drum and then fixedly connected with the main winding drum 15.
When the mechanism ascends, the driving motor 14 drives the main winding drum 15 to rotate, the steel wire pull rope 19 is tightened, the innermost support tube 13-3 is driven to ascend through the fixed pulleys and the transition winding drums of each layer, when the innermost support tube 13-3 ascends to the top position, the innermost support tube 13-3 and the second support tube 13-2 are tensioned, the second support tube 13-2 starts to ascend under the tension of the steel wire pull rope, and the rest is done in sequence until all the support tubes ascend to the right position.
In order to prevent the support tube from suddenly sliding off during the lifting process, the driving motor 14 should have a self-locking function, for example, a motor with a self-locking speed reducer may be used.
The outer side of the main winding drum 15 is provided with a manual crank 20, and when the emergency power failure occurs during working, the manual crank can be operated manually, so that the extension and retraction of the lifting mechanism are realized.
In order to ensure that the support pipes are not blocked during the lifting process, a guide mechanism is arranged between two adjacent sections of support pipes, such as a slide rail and a slide groove which are matched with each other, a slide groove and a roller which are matched with each other, and a drawer-type slide rail structure 21 shown in fig. 3 can also be adopted.
The automatic drilling mechanism II comprises an electric hammer fixing plate 101, two electric hammers 102 are arranged on the electric hammer fixing plate 101 in two stations, and the distance between the two electric hammers can be adjusted to meet different operation requirements; in order to prevent dust from falling during drilling, a dust collecting cover 103 is sleeved at the lower part of each electric hammer; be located and be provided with benchmark pole 104 on the electric hammer fixed plate between two stations electric hammer, install the position sensor 105 that is used for detecting the electric hammer height at benchmark pole top, install high definition digtal camera 106 on the benchmark pole of position sensor 105 below, under the accurate response of position sensor and the dual control of high definition digtal camera, realize the accurate positioning of drilling operation position.
When the distance between the electric hammers at the two stations is adjusted, the distance can be adjusted in advance according to the hole distance required by engineering design, or the electric hammers at the two stations can be driven to approach or separate from each other by an electric hammer position adjusting component such as a stepping motor 107 and a linear motion mechanism (for example, the most common linear guide rail mechanism can be adopted, and other mechanisms capable of realizing the function can be adopted during actual manufacturing) in the working process so as to meet the requirement of the distance between the two holes.
During the in-service use, change electric hammer fixed plate (and the electric hammer of installing on it), can also realize other functions, such as assembly nut operation or tapping operation etc..
In order to relieve larger impact caused by electric hammer drill breakage and prevent the drill bit from being blocked, a buffer mechanism III is arranged below an automatic drilling mechanism II, and comprises a plurality of buffer springs 1002 which are uniformly and fixedly arranged on a connecting plate 1001; the connecting plate 1001 is connected to the top of the innermost support tube 13-3 by a clamp 1003 (left and right halves connected by bolts), and a plurality of buffer springs 1002 are supported at the bottom of the frame body of the electric hammer position adjusting assembly.
When the drilling device is used, the mounting base 11 can be fixed on the AGV flat car, so that the drilling device can move in the whole tunnel and the hole distance of the top of the longitudinal tunnel can be adjusted.
Claims (10)
1. A tunnel roof drilling equipment which characterized in that: the automatic drilling machine comprises a lifting mechanism with adjustable height and an automatic drilling mechanism with an electric hammer, wherein the automatic drilling mechanism is arranged above the lifting mechanism, and a position sensor for detecting the height of the electric hammer is further installed on the automatic drilling mechanism.
2. The tunnel top drilling apparatus of claim 1, wherein: the automatic drilling mechanism is connected with the lifting mechanism through a buffer mechanism.
3. The tunnel top drilling apparatus of claim 2, wherein: the buffer mechanism is a plurality of buffer springs which are evenly and fixedly arranged on the connecting plate.
4. The tunnel top drilling apparatus of claim 1, wherein: the automatic drilling mechanism comprises an electric hammer fixing plate, and the electric hammer is arranged on the electric hammer fixing plate at intervals in two stations; and a reference rod is arranged on the electric hammer fixing plate between the two stations of the electric hammer, the position sensor is arranged at the top of the reference rod, and a camera is arranged on the reference rod below the position sensor.
5. The tunnel top drilling apparatus of claim 4, wherein: the distance between the two station electric hammers is adjustable; the lower part of each electric hammer is sleeved with a dust collecting cover.
6. The tunnel top drilling apparatus of claim 5, wherein: the electric hammer position adjusting assembly is arranged below the electric hammer fixing plate and comprises a stepping motor, and the stepping motor drives the electric hammer on the two stations to be close to or far away from the electric hammer through a linear motion mechanism.
7. The tunnel top drilling apparatus of claim 1, wherein: the lifting mechanism comprises an installation base and a plurality of sections of supporting tubes fixedly arranged on the installation base, the supporting tubes are sequentially overlapped and sleeved together, and the lifting mechanism is used for lifting or lowering the supporting tubes.
8. The tunnel top drilling apparatus of claim 7, wherein: the lifting mechanism comprises a driving motor and a main winding drum which is arranged on the mounting base and connected with the driving motor, transition winding drums are respectively arranged on the outer side walls of the sections of outer sleeve supporting tubes, fixed pulleys corresponding to the winding drums are arranged at the tops of the sections of outer sleeve supporting tubes, fixed blocks are arranged at the bottoms of the outer sides of the innermost layer supporting tubes, and one ends of the fixed blocks are fixedly connected with the main winding drum through steel wire pull ropes fixedly connected with the fixed blocks sequentially after passing through each fixed pulley and the transition winding drum.
9. The tunnel top drilling apparatus of claim 8, wherein: a guide mechanism is arranged between two adjacent sections of the supporting pipes; and a manual crank is arranged on the outer side of the main winding drum.
10. The tunnel top drilling apparatus of claim 7, wherein: the multiple supporting tubes are square tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137758.5A CN111188573A (en) | 2020-03-03 | 2020-03-03 | Tunnel top drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010137758.5A CN111188573A (en) | 2020-03-03 | 2020-03-03 | Tunnel top drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111188573A true CN111188573A (en) | 2020-05-22 |
Family
ID=70705368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010137758.5A Pending CN111188573A (en) | 2020-03-03 | 2020-03-03 | Tunnel top drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111188573A (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080089057A (en) * | 2007-03-31 | 2008-10-06 | 김한택 | Go up and down device for a hammer drill |
| CN201883940U (en) * | 2010-12-13 | 2011-06-29 | 刘汉华 | Electrically-driven lifting punching machine |
| CN203293134U (en) * | 2013-06-04 | 2013-11-20 | 浙江杭博电动工具有限公司 | Double-hammerhead electric hammer |
| CN103850648A (en) * | 2012-11-30 | 2014-06-11 | 西安众智惠泽光电科技有限公司 | Automatic portable rig for tunnel blasting construction |
| CN204294998U (en) * | 2014-11-12 | 2015-04-29 | 广州市景龙装饰工程有限公司 | A kind of percussion drill bracing or strutting arrangement |
| CN104647302A (en) * | 2013-11-25 | 2015-05-27 | 铜陵市精品工具模具有限责任公司 | Lifting punching machine convenient for punching high part |
| CN204524342U (en) * | 2015-03-27 | 2015-08-05 | 阳春林 | Wheel type mobile straight-tooth lifting top board eyes drill |
| CN205128998U (en) * | 2015-10-27 | 2016-04-06 | 贾福明 | Ceiling drilling elevating gear |
| CN206840447U (en) * | 2017-06-01 | 2018-01-05 | 周忠华 | A kind of full-automatic lifting puncher |
| CN208122755U (en) * | 2018-02-22 | 2018-11-20 | 西安沃祥航空科技有限公司 | A kind of tunnel overhead working punch device |
| CN109611023A (en) * | 2018-08-07 | 2019-04-12 | 有利创新科技有限公司 | Safety vertical drilling tool for high altitude operation |
| CN109732124A (en) * | 2019-01-29 | 2019-05-10 | 苏州市万斗精密机械有限公司 | Top plate punching support |
| CN109838210A (en) * | 2019-04-08 | 2019-06-04 | 中铁一局集团电务工程有限公司 | A kind of application method of rigid contact net suspension fully-automatic intelligent positioning drilling device |
| CN109930992A (en) * | 2019-03-04 | 2019-06-25 | 厦门市创凌包装设备有限公司 | A kind of intelligent tunnel drilling machine and boring method |
| CN209223995U (en) * | 2018-11-14 | 2019-08-09 | 中国二冶集团有限公司 | A kind of double electric hammer turn hole devices |
| CN209439489U (en) * | 2019-01-31 | 2019-09-27 | 咸阳铁人机械自动化有限公司 | A kind of scalable high altitude operation auxiliary device |
| CN110340629A (en) * | 2019-07-17 | 2019-10-18 | 合肥源驰科技有限公司 | A kind of extinguishing pipe automation fitting machine |
| CN110725648A (en) * | 2019-11-19 | 2020-01-24 | 中交机电工程局有限公司 | Double-drill-bit tunnel automatic drilling machine and method |
| CN212154639U (en) * | 2020-03-03 | 2020-12-15 | 郑州机械研究所有限公司 | Tunnel top drilling device |
-
2020
- 2020-03-03 CN CN202010137758.5A patent/CN111188573A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080089057A (en) * | 2007-03-31 | 2008-10-06 | 김한택 | Go up and down device for a hammer drill |
| CN201883940U (en) * | 2010-12-13 | 2011-06-29 | 刘汉华 | Electrically-driven lifting punching machine |
| CN103850648A (en) * | 2012-11-30 | 2014-06-11 | 西安众智惠泽光电科技有限公司 | Automatic portable rig for tunnel blasting construction |
| CN203293134U (en) * | 2013-06-04 | 2013-11-20 | 浙江杭博电动工具有限公司 | Double-hammerhead electric hammer |
| CN104647302A (en) * | 2013-11-25 | 2015-05-27 | 铜陵市精品工具模具有限责任公司 | Lifting punching machine convenient for punching high part |
| CN204294998U (en) * | 2014-11-12 | 2015-04-29 | 广州市景龙装饰工程有限公司 | A kind of percussion drill bracing or strutting arrangement |
| CN204524342U (en) * | 2015-03-27 | 2015-08-05 | 阳春林 | Wheel type mobile straight-tooth lifting top board eyes drill |
| CN205128998U (en) * | 2015-10-27 | 2016-04-06 | 贾福明 | Ceiling drilling elevating gear |
| CN206840447U (en) * | 2017-06-01 | 2018-01-05 | 周忠华 | A kind of full-automatic lifting puncher |
| CN208122755U (en) * | 2018-02-22 | 2018-11-20 | 西安沃祥航空科技有限公司 | A kind of tunnel overhead working punch device |
| CN109611023A (en) * | 2018-08-07 | 2019-04-12 | 有利创新科技有限公司 | Safety vertical drilling tool for high altitude operation |
| CN209223995U (en) * | 2018-11-14 | 2019-08-09 | 中国二冶集团有限公司 | A kind of double electric hammer turn hole devices |
| CN109732124A (en) * | 2019-01-29 | 2019-05-10 | 苏州市万斗精密机械有限公司 | Top plate punching support |
| CN209439489U (en) * | 2019-01-31 | 2019-09-27 | 咸阳铁人机械自动化有限公司 | A kind of scalable high altitude operation auxiliary device |
| CN109930992A (en) * | 2019-03-04 | 2019-06-25 | 厦门市创凌包装设备有限公司 | A kind of intelligent tunnel drilling machine and boring method |
| CN109838210A (en) * | 2019-04-08 | 2019-06-04 | 中铁一局集团电务工程有限公司 | A kind of application method of rigid contact net suspension fully-automatic intelligent positioning drilling device |
| CN110340629A (en) * | 2019-07-17 | 2019-10-18 | 合肥源驰科技有限公司 | A kind of extinguishing pipe automation fitting machine |
| CN110725648A (en) * | 2019-11-19 | 2020-01-24 | 中交机电工程局有限公司 | Double-drill-bit tunnel automatic drilling machine and method |
| CN212154639U (en) * | 2020-03-03 | 2020-12-15 | 郑州机械研究所有限公司 | Tunnel top drilling device |
Non-Patent Citations (2)
| Title |
|---|
| 刘桓龙;李茂;于兰英;柯坚;郑涛;: "地铁隧道多方位高精度钻孔设备的方案设计", 城市轨道交通研究, no. 04, 10 April 2017 (2017-04-10), pages 48 - 51 * |
| 李博;许淑惠;郝卿儒;: "支架式万向气动锚杆钻机", 建筑机械, no. 12, 9 December 2016 (2016-12-09), pages 57 - 61 * |
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