CN201826836U - Audio frequency vibrating head for sampling drilling machine - Google Patents
Audio frequency vibrating head for sampling drilling machine Download PDFInfo
- Publication number
- CN201826836U CN201826836U CN2010201811345U CN201020181134U CN201826836U CN 201826836 U CN201826836 U CN 201826836U CN 2010201811345 U CN2010201811345 U CN 2010201811345U CN 201020181134 U CN201020181134 U CN 201020181134U CN 201826836 U CN201826836 U CN 201826836U
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- main shaft
- casing
- bearing
- shaft
- oil
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- Expired - Fee Related
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- 238000005553 drilling Methods 0.000 title abstract description 30
- 238000005070 sampling Methods 0.000 title description 12
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 230000035939 shock Effects 0.000 claims description 16
- 238000013016 damping Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 description 11
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001515806 Stictis Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a sample audio frequency vibration head for rig, it is including the box, run through the main shaft in the middle of the box from top to bottom, set up in the box horizontal direction and for two eccentric shafts of main shaft symmetry, locate box outlying slide to and connect the buffer between slide and box, be equipped with the eccentric block on the eccentric shaft, be formed with outstanding shaft shoulder in the middle of the main shaft, the gyration unit head is connected to the main shaft upper end, drilling rod and sampler are connected to the main shaft lower extreme, the slide sets up on the guide rail of audio frequency rig. Borrow by the utility model discloses a sample audio frequency vibrating head for rig can realize the sample time to the effect of soil pollution-free, no disturbance, can also realize drilling and carry brill speed to can realize that the vibration strikes to creep into and add the compound sample that the gyration creeps into and creep into, further improve drilling speed, improve work efficiency.
Description
Technical field
The relevant a kind of vibration head of the utility model refers in particular to a kind of stratum that is used for and reconnoitres the sampler drill of sampling acoustic frequency vibration head.
Background technology
Continuous variation along with global climate; people are to the protection pay attention to day by day of environment; the soil environment problem becomes one of focus of environmental science; the formation of soil; growing with developing is the key problem of soil environment theoretical research; rebuild for the soil palaeoenvironment; palaeoenvironment develops research and lays particular emphasis on high-resolution; high accuracy and high accuracy; need to improve the precision that soil sample is analyzed; simultaneously to sampling equipment; instrument and sampling craft are had higher requirement; be that this class sampling must have sample taking rate height; integrality is good; pollution-free; no disturbance; sample keeps the characteristics of primary structure and original occurrence attitude, thereby can extract first-hand real resource environment information.
At present, domestic soil environment sampler drill is the geology rock-core borer based on rotary drilling basically, need flushing liquor (mud, foam or air) flushing hole during the sampling of this class rig at the bottom of, carry drilling cuttings, cooling drill bit and protection hole wall.Say on the stricti jurise, the revolution sampling is not suitable for the soil environment sampling, this is because rotary drilling is big to the disturbance of pedotheque on the one hand, flushing liquor (foam or air) is at the bottom of the flushing hole on the other hand, also, cause survey data to be lower than actual value with the material dilution that needs in the soil to detect.
The audio frequency rig that a kind of direct driving vibro-drilling is abroad arranged, the acoustic frequency vibration head of this audio frequency rig has designed a special motor, it is by the spline connection and drive a horizontal axis, this is connected with crank by the axle that second end has the connection of spherical crown spline, the opposite eccentric shaft of one auxiliary crank driving direction, an eccentric shaft is arranged in the cylindrical cavity, and eccentric shaft provides camming movement to produce up-down vibration and acts on the longitudinal axis and the drilling tool.And this acoustic frequency vibration rig acoustic frequency vibration head is the mechanical forced eccentric wheel method of synchronization, has complex structure, drives shortcomings such as Gear Processing required precision height, the acoustic frequency vibration head volume of eccentric shaft is big.
The utility model content
In view of this, it is a kind of simple in structure, safe and reliable that main purpose of the present utility model is to provide, easy to use and can satisfy pollution-free, undisturbed direct-push sampler drill acoustic frequency vibration head.
For achieving the above object, the utility model provides a kind of sampler drill acoustic frequency vibration head, its include casing, from top to bottom the main shaft in the middle of the casing, be arranged at horizontal direction in the casing and with respect to two eccentric shafts of main shaft symmetry, be located at the slide plate of casing periphery, and be connected in buffer between slide plate and the casing, eccentric shaft is provided with eccentric block, be formed with the outstanding shaft shoulder in the middle of the main shaft, the main shaft upper end connects the rotary motive power head, main shaft lower end jointed rod and sampler, slide plate are arranged on the guide rail of audio frequency rig.
The two ends of eccentric shaft are separately installed with high-speed bearing, and high-speed bearing is arranged in the dead eye of casing both sides, and the high-speed bearing near slide plate one side on the casing is located by bearing (ball) cover, is located by high-speed motor away from the high-speed bearing of slide plate one side on the casing.
Be connected by spline between high-speed motor and the eccentric shaft, perhaps adopt shaft coupling to be connected between high-speed motor and the eccentric shaft.
The vertical direction at casing center is provided with two plain bearing housings in both sides up and down, respectively be provided with sliding bearing between the shaft shoulder of these two plain bearing housings and main shaft around main shaft, and sliding bearing is shelved on the shaft shoulder, the outside of two sliding bearings is by main shaft end cap location up and down, and this main shaft end cap is by being bolted on the casing.
Buffer includes the gripper shoe of being located at the casing left and right sides, be wrapped in the shock absorber part of gripper shoe and be positioned at the shock absorber part baffle plate of shock absorber part periphery, this shock absorber part baffle plate is installed on the otic placode, this otic placode is located at the two ends of slide plate, and the two ends of slide plate are connected by bolt respectively with between the otic placode.
Preferably, shock absorber part is made by rubber or damping spring.
Reach bearing (ball) cover on the casing of high-speed bearing position and be provided with the oil gas inlet, the other end that the oil gas inlet connects transportation pipe, transportation pipe is connected with oil-gas mixer, oil-gas mixer is connected with air pipe and send oil pipe, the other end of air pipe is connected with air compressor, send the other end of oil pipe to be connected with oil pump, the casing lower end is provided with oil gas vent.
By sampler drill of the present utility model acoustic frequency vibration head, in the time of can realizing taking a sample to pollution-free, the undisturbed effect of soil, can also realize creeping into and carrying the drilling speed degree, and can realize that vibratory impulse creeps into and add the compound sample drilling that creeps into of revolution, further improve rate of penetration, increase work efficiency.
Description of drawings
Fig. 1 is the main pseudosection of the utility model sampler drill with the acoustic frequency vibration head;
Fig. 2 is the top plan view of the utility model sampler drill with the acoustic frequency vibration head;
Fig. 3 is the schematic diagram of the oil gas lubricating system in the utility model.
The specific embodiment
For ease of structure of the present utility model and the effect that reached are had further understanding, the preferred embodiment that develops simultaneously of existing conjunction with figs. is described in detail as follows.
As shown in Figure 1 to Figure 3, sampler drill of the present utility model with the acoustic frequency vibration head include casing 1, from top to bottom the main shaft 2 in the middle of the casing 1, be arranged in the casing 1 in horizontal direction and with respect to two eccentric shafts 3 of main shaft 2 symmetries, be located at the slide plate 4 of casing 1 periphery, and be connected in the buffer between slide plate 4 and the casing 1.These two eccentric shaft 3 structures are identical, eccentric shaft 3 is provided with eccentric block 30, the two ends of eccentric shaft 3 are separately installed with high-speed bearing 32, the high-speed bearing 32 at eccentric shaft 3 two ends has four in the utility model, be separately positioned in the dead eye of casing 1 both sides, high-speed bearing 32 near slide plate 4 one sides on the casing 1 is located by bearing (ball) cover 33, high-speed bearing 32 away from slide plate 4 one sides on the casing 1 is located by high-speed motor 5, be connected by spline between high-speed motor 5 and the eccentric shaft 3, also can adopt shaft coupling to connect.The centre of the main shaft 2 in the utility model is formed with the shaft shoulder 20, the vertical direction at casing 1 center is provided with two plain bearing housing (not shown)s in both sides up and down, respectively be provided with sliding bearing 21 between the shaft shoulder 20 of these two plain bearing housings and main shaft 2 around main shaft 2, and sliding bearing 21 is shelved on the shaft shoulder 20, the outside of two sliding bearings 21 is by main shaft end cap 22 location up and down, main shaft end cap 22 is by being bolted on the casing 1, this sliding bearing 21 is resisted against the sidewall (as Fig. 1 and shown in Figure 2) of casing 1, and the vibration force (or vibration wave) that eccentric block 30 produces during eccentric shaft 3 rotations is successively by casing 1, main shaft end cap 22 and sliding bearing 21 are delivered on the shaft shoulder 20 of main shaft 2.The lower end of main shaft 2 is connected with drilling rod, sampler (not shown), and the upper end is connected with the rotary motive power head (not shown) that drives these main shaft 2 rotations.Buffer of the present utility model includes the gripper shoe 10 of being located at casing 1 left and right sides, be wrapped in the shock absorber part 6 of gripper shoe 10 and be positioned at the shock absorber part baffle plate 70 of shock absorber part 6 peripheries, this shock absorber part baffle plate 70 is installed on the otic placode 7, this otic placode 7 is located at the two ends of slide plate 4, and the two ends of slide plate 4 are connected by bolt respectively with between the otic placode 7.Shock absorber part 6 in the utility model can be made by rubber, and perhaps shock absorber part 6 is made by damping spring.
As shown in Figure 1 to Figure 3, the utility model sampler drill also includes oil gas lubricating system with the acoustic frequency vibration head, its include on the casing 1 that is arranged at high-speed bearing 32 positions and bearing (ball) cover 33 on four oil gas inlets 330, with this oil gas enter the mouth 330 transportation pipes that are connected 8, be connected in the oil-gas mixer 9 of transportation pipe 8 other ends, and the air pipe that is connected with oil-gas mixer 9 90 and send oil pipe 91, the other end of this air pipe 90 is connected with the air compressor (not shown), send the other end of oil pipe 91 to be connected with the oil pump (not shown).Clean air through the air compressor compression enters oil-gas mixer 9 by air pipe 90, lubrication oil by the oil pump pumping enters oil-gas mixer 9 by sending oil pipe 91, with enter four transportation pipes 8 after compressed air mixes in oil-gas mixer 9, lubrication oil flows at compressed-air actuated drive lower edge tube wall, and be compressed air and dispel, form oil film, enter on the high-speed bearing 32, lubricated and cooling high-speed bearing 32 by oil gas inlet 330 modes with trickle oil droplet.Lubrication oil separates in casing 1 with compressed air, and lubrication oil flows to oil gas vent 11 places of casing 1 lower end under the effect of deadweight, and goes out casing 1 in that action of air pressure is dirty.The purpose that the oil-air lubrication mode is set is that lubrication oil produces huge damping action to high-speed bearing 32 and eccentric shaft 3, reduces useless power consumption when avoiding high-speed bearing 32 and eccentric shaft 3 to rotate at a high speed in lubrication oil.
Upwards carry when boring, utilize rig to act on lifting force on the slide plate 4 and upwards pass to the shaft shoulder 20 downsides of main shaft end cap 22, sliding bearing 21, main shaft 2 of vibration-damped component 6, casing 1, the downside of vibration-damped component baffle plate 70, gripper shoe 10 downsides and drilling rod, sampler successively, and upwards carry brill, sampler is mentioned ground; If the lifting force of rig is not enough to drilling rod and sampler are promoted, the vibration force that makes progress that can utilize eccentric shaft 3 to produce simultaneously passes to the shaft shoulder 20 downsides of main shaft end cap 22, sliding bearing 21, main shaft 2 of high-speed bearing 32, casing 1, downside and drilling rod, sampler successively, and upwards carries brill.
The vibration force that eccentric shaft 3 produces is when passing to high-speed bearing 32, also vibration force is passed to vibration-damped component 6, vibration-damped component baffle plate 70, slide plate 4 and sampler drill complete machine, but since vibration-damped component 6 have good weaken impact and (or) effect of vibration transmission, weakened the transmission of vibration force, played damping effect to the rig complete machine.
When starting high-speed motor 5, start oil pump and air compressor, oil pump is delivered to oil-gas mixer 9 by sending oil pipe 91 with lubrication oil, air compressor is delivered to the compressed air of cleaning in the oil-gas mixer 9 by air pipe 90, after lubrication oil mixes, by four transportation pipes 8, oil gas inlet 330 is delivered on the high-speed bearing 32, lubricate and cooling high-speed bearing 32, gas mixture separates in casing 1, lubrication oil flows in the oil gas vent 11 of casing 1 bottom under the effect of deadweight, and under action of air pressure, flow out, guarantee that casing 1 bottom can not store lubrication oil.
The upper end of main shaft 2 is connected with the rotary motive power head in the utility model, and the unit head of this rotary motive power head and common unit head rig is the same to provide rotary power for drilling rod (or sampler).When soil environment is taken a sample, the rotary motive power head is not worked, when sample drilling arrives firm hard formation, acoustic frequency vibration creeps into slowly, when perhaps appearance needs rotary drill rod to handle drilling accident as lock of tool drilling, when needing the drilling rod revolution, the conversion sampling method, start the rotary motive power head, drive shaft 2, drilling rod and sampler revolution are cored or are handled drilling accident.At this moment, the acoustic frequency vibration head is not worked, and sampler drill is the same with the function of common rotary motive power head rig.Certainly, owing on the sampler drill sampler drill of the present utility model acoustic frequency vibration head is installed, in the work of rig rotary motive power head, can starts the acoustic frequency vibration head, the realization vibratory impulse creeps into and adds the compound sample drilling that revolution is crept into, and further improves rate of penetration.
The above is preferred embodiment of the present utility model only, is not to be used for limiting to protection domain of the present utility model, and the equivalent structure that all utilization the utility model manuals and accompanying drawing content are done changes, and all in like manner is contained in the protection domain of the present utility model.
Claims (7)
1. sampler drill acoustic frequency vibration head, it is characterized in that, it includes casing, from top to bottom through the middle main shaft of described casing, be arranged in the described casing in horizontal direction and with respect to two eccentric shafts of described main shaft symmetry, be located at the slide plate of described casing periphery, and be connected in buffer between described slide plate and the described casing, described eccentric shaft is provided with eccentric block, be formed with the outstanding shaft shoulder in the middle of the described main shaft, described main shaft upper end connects the rotary motive power head, described main shaft lower end jointed rod and sampler, described slide plate is arranged on the guide rail of audio frequency rig.
2. sampler drill acoustic frequency vibration head as claimed in claim 1, it is characterized in that, the two ends of described eccentric shaft are separately installed with high-speed bearing, described high-speed bearing is arranged in the dead eye of described casing both sides, described high-speed bearing near described slide plate one side on the described casing is located by bearing (ball) cover, is located by high-speed motor away from the described high-speed bearing of described slide plate one side on the described casing.
3. sampler drill acoustic frequency vibration head as claimed in claim 2 is characterized in that, is connected by spline between described high-speed motor and the described eccentric shaft, adopts shaft coupling to be connected between perhaps described high-speed motor and the described eccentric shaft.
4. sampler drill acoustic frequency vibration head as claimed in claim 1, it is characterized in that, the vertical direction at described casing center is provided with two plain bearing housings in both sides up and down, respectively be provided with sliding bearing between the shaft shoulder of these two plain bearing housings and described main shaft around described main shaft, and described sliding bearing is shelved on the described shaft shoulder, the outside of two described sliding bearings is by main shaft end cap location up and down, and this main shaft end cap is by being bolted on the described casing.
5. sampler drill acoustic frequency vibration head as claimed in claim 1, it is characterized in that, described buffer includes the gripper shoe of being located at the described casing left and right sides, be wrapped in the shock absorber part of described gripper shoe and be positioned at the shock absorber part baffle plate of described shock absorber part periphery, this shock absorber part baffle plate is installed on the otic placode, this otic placode is located at the two ends of described slide plate, and the two ends of described slide plate are connected by bolt respectively with between the described otic placode.
6. sampler drill acoustic frequency vibration head as claimed in claim 5 is characterized in that described shock absorber part is made by rubber or damping spring.
7. sampler drill acoustic frequency vibration head as claimed in claim 2, it is characterized in that, reach bearing (ball) cover on the described casing of described high-speed bearing position and be provided with the oil gas inlet, the other end that described oil gas inlet connects transportation pipe, described transportation pipe is connected with oil-gas mixer, described oil-gas mixer is connected with air pipe and send oil pipe, the other end of described air pipe is connected with air compressor, the described other end of oil pipe that send is connected with oil pump, and described casing lower end is provided with oil gas vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811345U CN201826836U (en) | 2010-04-29 | 2010-04-29 | Audio frequency vibrating head for sampling drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201811345U CN201826836U (en) | 2010-04-29 | 2010-04-29 | Audio frequency vibrating head for sampling drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826836U true CN201826836U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201811345U Expired - Fee Related CN201826836U (en) | 2010-04-29 | 2010-04-29 | Audio frequency vibrating head for sampling drilling machine |
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| CN (1) | CN201826836U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435459A (en) * | 2011-11-25 | 2012-05-02 | 中国地质大学（北京） | Portable earth surface shallow sampler |
| WO2012155305A1 (en) * | 2011-05-16 | 2012-11-22 | Tang Zhongsheng | Rotary impact type rock drilling machine and double-layer drilling rod mechanism |
| CN102900354A (en) * | 2012-05-23 | 2013-01-30 | 中煤地第二勘探局有限责任公司 | Hydraulic superhigh-frequency vibrating power head |
| CN104879125A (en) * | 2015-05-14 | 2015-09-02 | 北京探矿工程研究所 | Portable mechanical audio frequency vibration sampling drilling machine |
| CN105201407A (en) * | 2015-10-14 | 2015-12-30 | 中煤地第二勘探局有限责任公司 | Novel hydraulic ultra-high frequency vibration power head |
| CN106639869A (en) * | 2016-12-19 | 2017-05-10 | 中国神华能源股份有限公司 | Drilling machine and method for avoiding drilling machine sticking |
| CN107741338A (en) * | 2017-11-24 | 2018-02-27 | 辽宁省水利水电科学研究院 | A kind of dither weak soil sampling system |
| CN108119063A (en) * | 2017-12-14 | 2018-06-05 | 湖州迈隆机械有限公司 | A kind of vibrodrill |
| CN108918183A (en) * | 2018-09-19 | 2018-11-30 | 吉林大学 | Micro- brill experimental provision and method are turned round in hydrate vibration in ocean |
| CN110185395A (en) * | 2019-07-02 | 2019-08-30 | 中国地质大学（北京） | The double eccentric acoustic vibration drilling drivers of high frequency and its vibration-proof structure |
| CN110344761A (en) * | 2019-07-30 | 2019-10-18 | 南京贻润环境科技有限公司 | A kind of vehicle-mounted churn integrating dynamic impact problem head and audio frequency power head |
| CN111502549A (en) * | 2020-05-11 | 2020-08-07 | 南京中荷寰宇环境科技有限公司 | High-frequency eccentric vibration sound wave power head for drilling machine |
| CN116291424A (en) * | 2023-05-17 | 2023-06-23 | 烟台大学 | Drilling sampling device for geotechnical engineering investigation |
-
2010
- 2010-04-29 CN CN2010201811345U patent/CN201826836U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012155305A1 (en) * | 2011-05-16 | 2012-11-22 | Tang Zhongsheng | Rotary impact type rock drilling machine and double-layer drilling rod mechanism |
| US9670728B2 (en) | 2011-05-16 | 2017-06-06 | Zhongsheng Tang | Rotary impact drill and double-layer drilling rod mechanism |
| CN102435459B (en) * | 2011-11-25 | 2014-06-25 | 中国地质大学（北京） | Portable earth surface shallow sampler |
| CN102435459A (en) * | 2011-11-25 | 2012-05-02 | 中国地质大学（北京） | Portable earth surface shallow sampler |
| CN102900354B (en) * | 2012-05-23 | 2016-06-08 | 中煤地第二勘探局有限责任公司 | A kind of hydraulic pressure Action of Superhigh Frequency Vibration unit head |
| CN102900354A (en) * | 2012-05-23 | 2013-01-30 | 中煤地第二勘探局有限责任公司 | Hydraulic superhigh-frequency vibrating power head |
| CN104879125A (en) * | 2015-05-14 | 2015-09-02 | 北京探矿工程研究所 | Portable mechanical audio frequency vibration sampling drilling machine |
| CN105201407A (en) * | 2015-10-14 | 2015-12-30 | 中煤地第二勘探局有限责任公司 | Novel hydraulic ultra-high frequency vibration power head |
| CN106639869A (en) * | 2016-12-19 | 2017-05-10 | 中国神华能源股份有限公司 | Drilling machine and method for avoiding drilling machine sticking |
| CN107741338A (en) * | 2017-11-24 | 2018-02-27 | 辽宁省水利水电科学研究院 | A kind of dither weak soil sampling system |
| CN107741338B (en) * | 2017-11-24 | 2023-06-13 | 辽宁省水利水电科学研究院有限责任公司 | High-frequency vibration soft soil sampling system |
| CN108119063A (en) * | 2017-12-14 | 2018-06-05 | 湖州迈隆机械有限公司 | A kind of vibrodrill |
| CN108918183A (en) * | 2018-09-19 | 2018-11-30 | 吉林大学 | Micro- brill experimental provision and method are turned round in hydrate vibration in ocean |
| CN110185395A (en) * | 2019-07-02 | 2019-08-30 | 中国地质大学（北京） | The double eccentric acoustic vibration drilling drivers of high frequency and its vibration-proof structure |
| CN110344761A (en) * | 2019-07-30 | 2019-10-18 | 南京贻润环境科技有限公司 | A kind of vehicle-mounted churn integrating dynamic impact problem head and audio frequency power head |
| CN111502549A (en) * | 2020-05-11 | 2020-08-07 | 南京中荷寰宇环境科技有限公司 | High-frequency eccentric vibration sound wave power head for drilling machine |
| CN111502549B (en) * | 2020-05-11 | 2024-09-06 | 南京中荷寰宇环境科技有限公司 | High-frequency offset vibration acoustic wave power head for drilling machine |
| CN116291424A (en) * | 2023-05-17 | 2023-06-23 | 烟台大学 | Drilling sampling device for geotechnical engineering investigation |
| CN116291424B (en) * | 2023-05-17 | 2023-09-29 | 烟台大学 | A drilling sampling device for geotechnical engineering survey |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20130429 |