CN113216939A - Drilling depth meter counter and meter counting method for drilling machine - Google Patents
Drilling depth meter counter and meter counting method for drilling machine Download PDFInfo
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- CN113216939A CN113216939A CN202110288239.3A CN202110288239A CN113216939A CN 113216939 A CN113216939 A CN 113216939A CN 202110288239 A CN202110288239 A CN 202110288239A CN 113216939 A CN113216939 A CN 113216939A
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- 238000005553 drilling Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000006386 memory function Effects 0.000 claims description 3
- 241000209094 Oryza Species 0.000 claims 2
- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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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)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to the technical field of drilling measurement of a drilling machine, in particular to a drilling depth meter counter of the drilling machine, which comprises a counting code and storage component, a meter counter gear, a hydraulic clutch, an input gear, a clutch gear and a rack, wherein the meter counter gear is sleeved on an input shaft of the counting code and storage component; the oil inlet of the clutch is connected in parallel with the oil inlet of the hydraulic clamping mechanism, the hydraulic clutch is closed when the hydraulic clamping mechanism is in a clamping state, and the hydraulic clutch is separated when the hydraulic clamping mechanism is in a non-clamping state. The meter counter can realize automatic recording of drilling footage of a drilling machine and can store a plurality of drilling depth footage data, and the meter counter can realize automatic metering of effective drilling depth of a drilling tool through the parallel connection of the hydraulic clutch and the hydraulic clamping mechanism of the drilling tool, and is simple and convenient to operate.
Description
Technical Field
The invention relates to the technical field of drilling measurement of drilling machines, in particular to a drilling depth meter and a meter measuring method of a drilling machine.
Background
At present, the engineering machinery develops towards serialization, diversification and intellectualization. The drilling machine is more and more paid attention to as a conventional engineering machine. At present, the normal state during drilling: when the drilling machine normally drills, the chuck carries the pipe to drill, and after the drilling is finished, the clamping mechanism is in an idle state; emergency during drilling: the drilling and feeding are difficult or the drilling tool needs to be repeatedly pulled and fed back and forth by operating the clamping mechanism to achieve the purpose of passing through a complex geological zone when a small-range hole collapse is encountered. Because the emergency has the action of carrying the pipe to retreat during drilling, the metering system cannot identify the step of carrying the pipe to retreat, so that the metering of the drilling machine is difficult to realize all the time, and most of the statistics of the drilling size of the drilling machine at present adopts a manual recording mode. And because constructors are influenced by factors such as time, space, environment, complex drilling process and the like, the bodies and the minds of the constructors are always in a nervous state, and the behaviors of the constructors are different from those of the constructors under normal conditions. Therefore, the statistics of the drilling footage often show the phenomena of missing notes, vagueness and even data loss.
The problem not only limits the intelligent process of the drilling machine, but also increases the labor intensity of workers and influences the drilling work efficiency.
Therefore, the drilling depth meter is arranged on the drilling machine, and the automatic recording of the drilling footage is of great significance.
Disclosure of Invention
In order to solve the problems, the invention provides a drilling depth meter counter for a drilling machine, which can realize that the drilling machine can automatically record drilling depth measuring rules and can store a plurality of drilling depth measuring rules.
In order to achieve the purpose, the invention adopts the technical scheme that:
in a first technical scheme, the drilling depth meter for the drilling machine is used for measuring the drilling depth of the drilling tool of the drilling machine, the drilling tool is clamped by a hydraulic clamping mechanism, the drilling depth meter for the drilling machine is installed on a power head chuck base, the power head chuck base is installed on a rack guide rail in a sliding mode, the drilling depth meter for the drilling machine comprises a counting code and storage assembly, a meter gear, a hydraulic clutch, an input gear, a clutch gear and a rack, the meter gear is sleeved on an input shaft of the counting code and storage assembly, the clutch gear is connected with the input gear through the hydraulic clutch, the rack guide rail is provided with the rack which is arranged along the direction of a motor rack guide rail, and the input gear is meshed with the rack;
the oil inlet of the clutch is connected with the oil inlet of the hydraulic clamping mechanism in parallel, the hydraulic clutch is closed when the hydraulic clamping mechanism is in a clamping state, and the hydraulic clutch is separated when the hydraulic clamping mechanism is in a non-clamping state.
In the first technical solution, preferably, the counting, encoding and storing component includes a counter, an encoder and a storing and wireless unit, wherein the storing and wireless unit is internally provided with an RS485 communication module and a wireless communication module, and is used for USB connection copy data, direct connection computer display or wireless transmission data.
In the first technical solution, preferably, the counting code and storage component is a bidirectional counting module, and the forward rotation value is increased and the reverse rotation value is decreased.
In the first technical means, preferably, the counting code and storage module has a storage module with a power-off memory function, so that power-off data is not lost.
In the first technical means, preferably, the counter is provided with a parameter setting button and a data clearing button.
In the first technical scheme, as preferred, the drilling depth meter counter of the drilling machine further comprises a shell, a bearing, a transmission shaft and a mounting seat, wherein an inner hole of a clutch gear is connected with an outer ring of the bearing 10, an inner ring of the bearing is connected with the transmission shaft 11, an input gear is connected with the transmission shaft through a spline, the transmission shaft is mounted on the mounting seat, and the mounting seat is mounted on the shell through a screw and a positioning pin.
In the first technical solution, preferably, the clutch gear includes an oil inlet nozzle, and the oil inlet nozzle is mounted on the side wall of the housing through an oil inlet nozzle fixing seat.
In the first technical solution, preferably, a pressure reducing valve is provided on the oil inlet nozzle.
In a second technical scheme, the drilling depth meter counter of the drilling machine is used, an oil supply pipeline of the hydraulic clutch is connected in parallel with an oil inlet of a clamping mechanism which is arranged on drilling machine equipment and used for clamping and driving a drilling tool to advance and retreat, and a pressure reducing valve is arranged on the oil supply pipeline of the hydraulic clutch;
when a hydraulic system of a drilling machine supplies oil for a clamping mechanism to clamp a drilling tool for drilling and construction, and simultaneously supplies oil for a hydraulic clutch connected in parallel with an oil circuit of the hydraulic clamping mechanism to enable the hydraulic clutch to be in a closed state, at the moment, a rack arranged on a rack guide rail and a power head chuck base and an input gear arranged in a meter counter main body respectively enable the linear reciprocating motion to be converted into rotary motion, the input gear rotates to drive a transmission shaft and the hydraulic clutch and a clutch gear arranged on the installation shaft to rotate, and the clutch gear drives a meter counter gear meshed with the clutch gear to rotate to enable a counting code and storage assembly to start to record data;
when the clamping mechanism is not supplied with oil, the hydraulic clutch connected with the oil circuit of the clamping mechanism in parallel is not supplied with oil, the hydraulic clutch is in a disengaged state, and at the moment, the relative displacement of the rack and the input gear in the meter counter main body cannot drive the clutch gear and the meter counter gear to rotate, so that the counting coding and storing assembly does not record data.
The invention has the beneficial effects that:
the length-counting coding and storage component is integrated with the storage unit, a plurality of drilling depth footage data can be stored, and the data can be transmitted to the well for processing and analysis through a USB flash disk, networking or wireless transmission, so that the accuracy of the drilling depth data is effectively improved, and the labor intensity of construction managers is reduced.
The meter counter is connected in parallel with a hydraulic clamping mechanism of the drilling tool through a hydraulic clutch, can realize automatic measurement of the effective drilling depth of the drilling tool, and is simple and convenient to operate.
Drawings
FIG. 1 is a schematic view of a depth and meter drilling machine of the present invention.
FIG. 2 is a schematic top view of the depth and meter drilling machine of the present invention.
FIG. 3 is a schematic diagram of the counting code and storage assembly of the drilling depth meter of the drilling machine of the present invention.
The reference numerals include:
1-counting, coding and storing component, 2-meter gear, 3-shell, 4-hydraulic clutch, 5-input gear, 6-clutch gear, 7-mounting seat, 8-oil inlet nozzle fixing seat, 9-pressure reducing valve, 10-bearing, 11-transmission shaft, 12-rack, 13-rack guide rail, 14-power head chuck base and 15-screw;
101-encoder, 102-storage and radio unit, 103-counter.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
Example 1
As shown in fig. 1-3, the drilling depth meter of the drilling machine according to the present embodiment is used for measuring the drilling depth of a drilling tool of the drilling machine, the drilling tool is clamped by a hydraulic clamping mechanism, the drilling depth meter of the drilling machine is mounted on a power head chuck base 14, the power head chuck base 14 is slidably mounted on a rack guide rail 13, the drilling depth meter of the drilling machine comprises a count code and storage component 1, a meter gear 2, a hydraulic clutch 4, an input gear 5, a clutch gear 6 and a rack 12, wherein the meter gear 2 is sleeved on an input shaft of the count code and storage component 1, the clutch gear 6 is connected with the input gear 5 through the hydraulic clutch 4, the rack 12 arranged along the direction of the rack guide rail 13 is arranged on the rack guide rail 13, and the input gear 5 is engaged with the rack 12;
an oil inlet of the clutch is connected in parallel with an oil inlet of the hydraulic clamping mechanism, the hydraulic clutch 4 is closed when the hydraulic clamping mechanism is in a clamping state, and the hydraulic clutch 4 is separated when the hydraulic clamping mechanism is in a non-clamping state.
The counting, coding and storing component 1 comprises a counter 103, a coder 101 and a storing and wireless unit 102, wherein the storing and wireless unit 102 is internally provided with an RS485 communication module and a wireless communication module and is used for USB connection copy data, direct connection computer display or wireless data transmission. The counting, coding and storing component 1 is a bidirectional counting module, the positive rotation value is increased, and the negative rotation value is decreased. The counting coding and storage component 1 is provided with a storage component with a power-off memory function, and power-off data are not lost. The counter 103 is provided with a parameter setting button and a data clearing button.
The drilling depth meter counter of the drilling machine further comprises a shell 3, a bearing 10, a transmission shaft 11 and a mounting seat 7, wherein an inner hole of a clutch gear 6 is connected with an outer ring of the bearing 10, an inner ring of the bearing 10 is connected with the transmission shaft 11, an input gear 5 is connected with the transmission shaft 11 through a spline, the transmission shaft 11 is mounted on the mounting seat 7, and the mounting seat 7 is mounted on the shell 3 through a screw 15 and a positioning pin.
The clutch gear 6 comprises an oil inlet nozzle, and the oil inlet nozzle is installed on the side wall of the shell 3 through an oil inlet nozzle fixing seat 8. The oil inlet nozzle is provided with a pressure reducing valve 9.
Specifically, the embodiment provides a drilling machine depth and meter counter which comprises a meter counter body and 12 racks. The meter counter main body comprises a counting coding and storing component 1, a meter counting gear 2, a shell 3, a hydraulic clutch 4, an input gear 5, a clutch gear 6, a mounting seat 7, an oil inlet nozzle fixing seat 8, a pressure reducing valve 9, a bearing 10, a transmission shaft 11 and a rack 12, wherein the meter counter main body is mounted on a power head chuck base 14 of the drilling machine, and the rack 12 is mounted on the side face of a rack guide rail 13 of the drilling machine. The meter main body is a housing 3 and components mounted therein. The meter counter main body comprises a counting coding and storage component 1, a meter counting gear 2, a shell 3, a hydraulic clutch 4, an input gear 5, a clutch gear 6, a mounting seat 7, an oil inlet nozzle fixing seat 8, pressure reducing valves 9, 10 and a transmission shaft 11. The clutch gear 6 is fixedly connected with the hydraulic clutch 4 through a screw 15, an inner hole of the clutch gear 6 is connected with an outer ring of a bearing 10, an inner ring of the bearing 10 is connected with a transmission shaft 11, the input gear 5 is connected with the transmission shaft 11 through a spline, the transmission shaft 11 is installed on an installation seat 7, the installation seat 7 is installed on the shell 3 through a screw 15 and a positioning pin, a rack 12 is installed on the side wall of a rack guide rail 13, and the input gear 5 is meshed with the rack 12.
The oil supply pipeline of the hydraulic clutch 4 is connected in parallel with the oil inlet of a clamping mechanism which is arranged on the drilling machine equipment and used for clamping and driving a drilling tool to advance and retreat, a pressure reducing valve 9 is arranged on the oil supply pipeline of the hydraulic clutch 4 so as to ensure that the larger working pressure of the clamping mechanism does not influence the normal work of a hydraulic clutch 4 assembly, and when the system supplies oil to the hydraulic clutch 4, the hydraulic clutch 4 is in a closed state; when the hydraulic clutch 4 is not supplied with oil, the hydraulic clutch 4 is in a closed state;
generally speaking, the use of the device is as follows, according to the design requirements, the meter main body and the rack 12 are respectively arranged on the side of the power head chuck base 14 and the side of the rack guide rail 13. An oil supply line of the clamping mechanism and an oil supply line of the hydraulic clutch 4 are connected in parallel, and a pressure reducing valve 9 is installed on the oil supply line of the hydraulic clutch 4. When the drilling machine drills or retreats, the rack guide rail 13 and the power head chuck base 14 generate linear reciprocating motion, the rack 12 and the input gear 5 in the meter counting device main body which are respectively arranged on the rack guide rail 13 and the power head chuck base 14 enable the linear reciprocating motion to be converted into rotary motion, the input gear 5 rotates to drive the transmission shaft 11 and the hydraulic clutch 4 and the clutch gear 6 which are arranged on the installation shaft 11 to rotate, and the clutch gear 6 drives the meter counting gear 2 which is meshed with the clutch gear to rotate so that the counting coding and storage assembly 1 starts to record data. This data can be set to be automatically recorded every n meters (the smaller the value of n is taken, the more accurate the recording).
The storage and wireless unit 102 provided by the invention can continuously record and wirelessly transmit the depths of a plurality of construction drill holes, so that the total footage of construction can be conveniently calculated.
Example 2
In the method for metering the drilling depth meter of the drilling machine, in the drilling depth meter of the drilling machine in the embodiment 1, an oil supply pipeline of a hydraulic clutch 4 is connected in parallel with an oil inlet of a clamping mechanism which is arranged on drilling machine equipment and used for clamping and driving a drilling tool to advance and retreat, and a pressure reducing valve 9 is arranged on the oil supply pipeline of the hydraulic clutch 4;
when a hydraulic system of a drilling machine supplies oil for a clamping mechanism to clamp a drilling tool for drilling and construction, and simultaneously supplies oil for a hydraulic clutch 4 connected in parallel with an oil path of the hydraulic clamping mechanism to enable the hydraulic clutch 4 to be in a closed state, at the moment, a rack 12 arranged on a rack guide rail 13 and a power head chuck base 14 and an input gear 5 in a meter main body enable the linear reciprocating motion to be converted into rotary motion, the input gear 5 rotates to drive a transmission shaft 11 and the hydraulic clutch 4 and a clutch gear 6 arranged on an installation shaft to rotate, and the clutch gear 6 drives a meter gear 2 meshed with the clutch gear to rotate to enable a counting code and storage assembly 1 to start to record data;
when the clamping mechanism is not supplied with oil, the hydraulic clutch 4 connected with the oil circuit of the clamping mechanism in parallel is not supplied with oil, the hydraulic clutch 4 is in a disengaged state, and at the moment, the relative displacement of the rack 12 and the input gear 5 in the meter counter main body cannot drive the clutch gear 6 and the meter counter gear 2 to rotate, so that the counting coding and storing component 1 does not record data.
The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.
Claims (9)
1. The utility model provides a rig bores depth meter rice ware for measure the brill depth of rig drilling tool, this drilling tool passes through the hydraulic clamping mechanism centre gripping, rig bores depth meter rice ware and installs at unit head chuck base, and unit head chuck base slidable installs on the frame guide rail its characterized in that: the drilling depth meter counter of the drilling machine comprises a counting code and storage assembly, a meter gear, a hydraulic clutch, an input gear, a clutch gear and a rack, wherein the meter gear is sleeved on an input shaft of the counting code and storage assembly, the clutch gear is connected with the input gear through the hydraulic clutch, the rack guide rail is provided with the rack which is guided and arranged along the moving rack guide rail, and the input gear is meshed with the rack;
the oil inlet of the clutch is connected with the oil inlet of the hydraulic clamping mechanism in parallel, the hydraulic clutch is closed when the hydraulic clamping mechanism is in a clamping state, and the hydraulic clutch is separated when the hydraulic clamping mechanism is in a non-clamping state.
2. The drilling machine depth and meter reading device of claim 1, wherein: the counting coding and storing assembly comprises a counter, a counting coding and storing assembly and a storing assembly, wherein an RS485 communication module and a wireless communication module are arranged in the counting coding and storing assembly and are used for USB connection copy data and direct connection computer display or wireless data transmission.
3. The drilling machine depth and meter drill of claim 2, wherein: the counting coding and storing component is a bidirectional counting module, the positive rotation numerical value is increased, and the negative rotation numerical value is decreased.
4. The drilling machine depth and meter drill of claim 2, wherein: the counting coding and storage assembly is provided with a storage assembly with a power-off memory function, so that power-off data are not lost.
5. The drilling machine depth and meter drill of claim 2, wherein: and a parameter setting button, a data zero clearing button and the like are arranged on the counter.
6. The drilling machine depth and meter reading device of claim 1, wherein: the drilling machine depth and meter counter further comprises a shell, a bearing, a transmission shaft and a mounting seat, wherein an inner hole of a clutch gear is connected with an outer ring of the bearing, an inner ring of the bearing is connected with the transmission shaft, an input gear is connected with the transmission shaft through a spline, the transmission shaft is mounted on the mounting seat, and the mounting seat is mounted on the shell through a screw and a positioning pin.
7. The drilling rig depth and meter drill of claim 6, wherein: the clutch gear comprises an oil inlet nozzle, and the oil inlet nozzle is installed on the side wall of the shell through an oil inlet nozzle fixing seat.
8. The drilling rig depth and meter drill of claim 7, wherein: and a pressure reducing valve is arranged on the oil inlet nozzle.
9. A method of measuring depth of a drill meter using a drill according to any one of claims 1 to 8, wherein: connecting an oil supply pipeline of the hydraulic clutch in parallel with an oil inlet of a clamping mechanism which is arranged on the drilling machine equipment and used for performing clamping and driving a drilling tool to advance and retreat, and installing a pressure reducing valve on the oil supply pipeline of the hydraulic clutch;
when a hydraulic system of a drilling machine supplies oil for a clamping mechanism to clamp a drilling tool for drilling and construction, and simultaneously supplies oil for a hydraulic clutch connected in parallel with an oil circuit of the hydraulic clamping mechanism to enable the hydraulic clutch to be in a closed state, at the moment, a rack arranged on a rack guide rail and a power head chuck base and an input gear arranged in a meter counter main body respectively enable the linear reciprocating motion to be converted into rotary motion, the input gear rotates to drive a transmission shaft and the hydraulic clutch and a clutch gear arranged on the installation shaft to rotate, and the clutch gear drives a meter counter gear meshed with the clutch gear to rotate to enable a counting code and storage assembly to start to record data;
when the clamping mechanism is not supplied with oil, the hydraulic clutch connected with the oil circuit of the clamping mechanism in parallel is not supplied with oil, the hydraulic clutch is in a disengaged state, and at the moment, the relative displacement of the rack and the input gear in the meter counter main body cannot drive the clutch gear and the meter counter gear to rotate, so that the counting coding and storing assembly does not record data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288239.3A CN113216939B (en) | 2021-03-17 | 2021-03-17 | Drilling machine drill depth meter and meter counting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288239.3A CN113216939B (en) | 2021-03-17 | 2021-03-17 | Drilling machine drill depth meter and meter counting method |
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| Publication Number | Publication Date |
|---|---|
| CN113216939A true CN113216939A (en) | 2021-08-06 |
| CN113216939B CN113216939B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110288239.3A Active CN113216939B (en) | 2021-03-17 | 2021-03-17 | Drilling machine drill depth meter and meter counting method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB524392A (en) * | 1939-01-28 | 1940-08-06 | John Thomson Hayward | Improvements in or relating to apparatus for measuring well depths and well strings |
| CN202220600U (en) * | 2011-08-26 | 2012-05-16 | 西安探矿机械厂 | Automatic drilling depth displaying and recording system of full-hydraulic power head drilling machine |
| CN202325483U (en) * | 2011-11-16 | 2012-07-11 | 焦作煤业（集团）白云煤业有限公司 | Drilling depth metering device |
| US20150159708A1 (en) * | 2013-12-06 | 2015-06-11 | Fuji Jukogyo Kabushiki Kaisha | Power train control device |
| CN108266181A (en) * | 2018-04-09 | 2018-07-10 | 东营仪锦能源科技有限公司 | A kind of coal mine drilling machine drilling rod depth measurement device |
| CN215256155U (en) * | 2021-03-17 | 2021-12-21 | 中煤科工集团沈阳研究院有限公司 | Depth-drilling meter-counting device of drilling machine |
-
2021
- 2021-03-17 CN CN202110288239.3A patent/CN113216939B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB524392A (en) * | 1939-01-28 | 1940-08-06 | John Thomson Hayward | Improvements in or relating to apparatus for measuring well depths and well strings |
| CN202220600U (en) * | 2011-08-26 | 2012-05-16 | 西安探矿机械厂 | Automatic drilling depth displaying and recording system of full-hydraulic power head drilling machine |
| CN202325483U (en) * | 2011-11-16 | 2012-07-11 | 焦作煤业（集团）白云煤业有限公司 | Drilling depth metering device |
| US20150159708A1 (en) * | 2013-12-06 | 2015-06-11 | Fuji Jukogyo Kabushiki Kaisha | Power train control device |
| CN108266181A (en) * | 2018-04-09 | 2018-07-10 | 东营仪锦能源科技有限公司 | A kind of coal mine drilling machine drilling rod depth measurement device |
| CN215256155U (en) * | 2021-03-17 | 2021-12-21 | 中煤科工集团沈阳研究院有限公司 | Depth-drilling meter-counting device of drilling machine |
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| CN113216939B (en) | 2024-05-10 |
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