阅读说明：本技术 深海运载器岩芯取样冲击钻机 (Rock core sampling percussion drill of deep sea carrier ) 是由 任玉刚 杨磊 鲁德泉 于凯本 刘延俊 张建华 于 2021-01-18 设计创作，主要内容包括：本发明涉及深海地质岩芯取样,特别是一种深海运载器岩芯取样冲击钻机。包括动力回转单元和冲击单元,其中,还包括振动发生单元,振动发生单元位于动力回转单元和冲击单元之间；所述动力回转单元包括后封盖、耐压壳体、无刷直流电机、减速器、前封盖、传动轴和深海充油补偿膜片,耐压壳体的前、后两端分别固定有前封盖和后封盖,后封盖、耐压壳体和前封盖组成封闭的腔体,无刷直流电机、减速器和传动轴均设置在该腔体内,无刷直流电机的输出轴与减速器连接,传动轴与减速器的输出轴连接。可在低钻压力和低钻进功耗下依靠高频冲击运动破碎岩石,大大提高了钻机钻进效率。(The invention relates to deep sea geological core sampling, in particular to a core sampling percussion drill of a deep sea carrier. The vibration generator comprises a power rotation unit, an impact unit and a vibration generation unit, wherein the vibration generation unit is positioned between the power rotation unit and the impact unit; the power rotation unit comprises a rear sealing cover, a pressure-resistant shell, a brushless direct current motor, a speed reducer, a front sealing cover, a transmission shaft and a deep sea oil-filled compensation diaphragm, wherein the front sealing cover and the rear sealing cover are fixed at the front end and the rear end of the pressure-resistant shell respectively, a closed cavity is formed by the rear sealing cover, the pressure-resistant shell and the front sealing cover, the brushless direct current motor, the speed reducer and the transmission shaft are all arranged in the cavity, the output shaft of the brushless direct current motor is connected with the speed reducer, and the transmission shaft is connected with the output shaft of the speed reducer. The rock can be broken by means of high-frequency impact motion under the conditions of low drilling pressure and low drilling power consumption, and the drilling efficiency of the drilling machine is greatly improved.)

1. The utility model provides a deep sea carrier core sample percussion drill, includes power gyration unit and impact unit, its characterized in that: the vibration generating unit is positioned between the power rotary unit and the impact unit;

the power rotary unit comprises a rear sealing cover (2), a pressure-resistant shell (3), a brushless direct current motor (4), a speed reducer (5), a front sealing cover (7), a transmission shaft (9) and a deep-sea oil-filled compensation membrane (26), wherein the front sealing cover (7) and the rear sealing cover (2) are respectively fixed at the front end and the rear end of the pressure-resistant shell (3), the rear sealing cover (2), the pressure-resistant shell (3) and the front sealing cover (7) form a closed cavity, the brushless direct current motor (4), the speed reducer (5) and the transmission shaft (9) are all arranged in the cavity, an output shaft of the brushless direct current motor (4) is connected with the speed reducer (5), and the transmission shaft (9) is connected with an output shaft of the speed reducer (5);

the vibration generating unit comprises a vibration generating unit cabin body (10), a rear fixed end cover (21), a front fixed end cover (13), a rear stable spring (20), a front stable spring (12), a piezoelectric vibration crystal array (11) and an elastic sleeve pin coupling (19), wherein the rear fixed end cover (21) is fixed at the rear end of the vibration generating unit cabin body (10), the front fixed end cover (13) is fixed at the front end of the vibration generating unit cabin body (10), the rear stable spring (20), the front stable spring (12), the piezoelectric vibration crystal array (11) and the elastic sleeve pin coupling (19) are all arranged in the vibration generating unit cabin body (10), the piezoelectric vibration crystal array (11) is arranged on an impact bearing flange (29), the elastic sleeve pin coupling (19) is arranged at the top of the vibration piezoelectric crystal array (11), the elastic sleeve pin coupling (19) is connected with the rear fixed end cover (21) through the rear stable spring (20), a sealing end cover (28) is fixed on the inner side of the front fixing end cover (13), and is provided with an O-shaped ring, so that static sealing design can be realized, and deep-sea underwater pressure-resistant sealing can be realized. The sealing end cover (28) is connected with the impact bearing flange (29) through a front stabilizing spring (12), the piezoelectric vibration crystal array (11) is formed by alternately connecting a plurality of annular piezoelectric quartz crystals and electrode plates from top to bottom at intervals, the elastic sleeve pin coupler (19) is connected with the transmission shaft (9) and a drill rod in the impact unit, and the mass of the elastic sleeve pin coupler (19) is larger than that of the piezoelectric vibration crystal array (11).

2. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: and a manipulator clamping handle (1) is fixed at the rear part of the rear sealing cover (2).

3. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: a deep sea oil-filled compensation diaphragm (26) is fixed on the inner side of the rear sealing cover (2), the deep sea oil-filled compensation diaphragm (26) is pressed between the rear sealing cover (2) and the pressure-resistant shell (3), a middle flange (24) and a front sealing cover (7) are sequentially arranged in front of the pressure-resistant shell (3), the front sealing cover (7) is fixedly connected with the middle flange (24), and the middle flange (24) is fixedly connected with the front end of the pressure-resistant shell (3);

a motor flange (6) is arranged between the middle flange (24) and the speed reducer (5), the rear end of the motor flange (6) is fixedly connected with the speed reducer shell, the front end of the motor flange (6) is fixedly connected with the middle flange (24), and the outer surface of the motor flange (6) is fixedly connected with the pressure-resistant shell (3).

4. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: the front end of the front sealing cover (7) is fixedly connected with the sealing end cover (22).

5. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: a dynamic seal is arranged between the front sealing cover (7) and the transmission shaft (9), a dynamic seal groove is formed in the inner surface of the front sealing cover (7), a dynamic seal ring (8) is arranged in the dynamic seal groove, and a plurality of O-shaped seal rings (25) are arranged between the intermediate flange (24) and the pressure-resistant shell (3).

6. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: angular contact bearings II (23) are arranged between the middle flange (24) and the transmission shaft (9) and between the front sealing cover (7) and the transmission shaft (9), and the two sets of angular contact bearings II (23) are installed in a centering mode.

7. The deep sea carrier core sampling percussive drill according to claim 1, characterized in that: the impact unit comprises a drill rod (14), a drill bit (15) and a coring sleeve (16), the rear end of the drill rod (14) penetrates through the power rotary unit and is connected with the transmission shaft (9) through an elastic sleeve pin coupler (19), the drill bit (15) is fixed at the front end of the drill rod (14), the coring sleeve (16) is arranged inside the front side of the drill rod (14), and an angular contact bearing I (17) is arranged between the drill rod (14) and the front fixed end cover (13).

Technical Field

The invention relates to deep sea geological core sampling, in particular to a core sampling percussion drill of a deep sea carrier.

Background

Because the rock contains rich important information of geological evolution, the acquisition of rock samples is one of the important targets of deep sea exploration tasks. In existing deep sea sampling techniques, drilling sampling remains an effective way to obtain rock samples. In the aspect of deep-sea geoscience research, plans such as Deep Sea Drilling (DSDP), Ocean Drilling (ODP) and Integrated Ocean Drilling (IODP) are developed continuously and globally, the theory of plate structures is verified, but the research on deep sea and atmospheric deep evolution, seabed biosphere distribution rule and the like is weak, and a sample of a typical region is urgently required to be obtained to develop fine verification drilling research.

At present, research and application development work of a large number of carrier core sampling drilling machines is carried out abroad. The American Alvin number completes the development work of an HSTR core sampling drilling machine, and successfully drills sulfide core samples; the MBARI research institute successfully develops a 4000 m-grade MCS sampler, can realize four-tube sampling, and successfully obtains a sample of bare bedrock on the Juan de Fuca seabed. Phoenix International company develops a set of coring device which can be carried on a Nereus II ROV, the coring length can reach 1.5m, and the coring operation water depth is 2400 m; the American Harbor Branch ocean institute completes the research of a 7000 m-grade Harbor Branch corer, and is carried on a Magellan ROV to complete a plurality of offshore tests; in addition, the research and application of deep sea carrier core coring devices are also carried out in the countries such as English, French and Russia, and the research and application of the matched small-sized core coring devices are carried out on manned submersible vehicles such as CONSUB (English), ST-I (French) and APTYC (Russia). In order to solve the problem of deep sea fine operation, deep sea vehicles in China are rapidly developed, a flood dragon manned submersible finishes the deepest submergence in the 7062 m world, a deep sea vehicle fine detection platform system and an operation mode represented by a manned submersible (HOV), an unmanned cable-controlled submersible (ROV) and an unmanned autonomous submersible (AUV) are preliminarily formed, and the deep sea fine coring problem can be effectively solved by combining the deep submersible vehicle fine operation and a drilling technology.

Generally, when the existing drilling machine breaks rock, the stress threshold of the rock is reached under a large moment and drill pressure to break the rock. Due to the fact that effective load and energy carried by the deep sea carrier are limited, the requirements of continuously increased drilling pressure and power consumption of sampling equipment are difficult to meet, fine coring operation and efficient drilling are achieved in a weak gravity environment, and the application problem of efficient and accurate core sampling in resource engineering exploration and scientific research in the deep sea environment is mainly solved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a deep sea carrier core sampling percussion drill based on the piezoelectric quartz crystal ultrasonic coupling vibration principle, can break rock by means of high-frequency impact motion under the conditions of low drilling pressure and low drilling power consumption, and greatly improves the drilling efficiency of the drill.

The technical scheme of the invention is as follows: a core sampling percussion drill of a deep sea carrier comprises a power rotary unit, an impact unit and a vibration generation unit, wherein the vibration generation unit is positioned between the power rotary unit and the impact unit;

the power rotary unit comprises a rear sealing cover, a pressure-resistant shell, a brushless direct current motor, a speed reducer, a front sealing cover, a transmission shaft and a deep sea oil-filled compensation diaphragm, wherein the front sealing cover and the rear sealing cover are respectively fixed at the front end and the rear end of the pressure-resistant shell, the rear sealing cover, the pressure-resistant shell and the front sealing cover form a closed cavity, the brushless direct current motor, the speed reducer and the transmission shaft are all arranged in the cavity, an output shaft of the brushless direct current motor is connected with the speed reducer, and the transmission shaft is connected with an output shaft of the speed reducer;

the vibration generating unit comprises a vibration generating unit cabin body, a rear fixed end cover, a front fixed end cover, a rear stable spring, a front stable spring, a piezoelectric vibration crystal array and an elastic sleeve pin coupling, the rear end at the vibration generating unit cabin body is fixed to the back fixed end cover, the front end at the vibration generating unit cabin body is fixed to preceding fixed end cover, back stabilizing spring, preceding stabilizing spring, piezoelectric vibration crystal array and elastic sleeve pin shaft coupling all set up at the vibration generating unit cabin internal, piezoelectric vibration crystal array places on impact bearing flange, elastic sleeve pin shaft coupling places the top at piezoelectric vibration crystal array, be connected through back stabilizing spring between elastic sleeve pin shaft coupling and the back fixed end cover, the inside survey of preceding fixed end cover is fixed with the end cover, the end cover disposes O type circle, can realize the static seal design, realize deep sea pressure-resistant sealed under water. The sealing end cover is connected with the impact bearing flange through a front stabilizing spring, the piezoelectric vibration crystal array is formed by alternately connecting a plurality of annular piezoelectric quartz crystals and electrode plates from top to bottom at intervals, the elastic sleeve pin coupler is connected with the transmission shaft and a drill rod in the impact unit, and the mass of the elastic sleeve pin coupler is larger than that of the piezoelectric vibration crystal array.

In the invention, a manipulator clamping handle is fixed at the rear part of the rear sealing cover. The drilling machine can be placed to a specified position by clamping the handle through the mechanical arm.

The deep sea oil-filled compensation membrane is fixed on the inner side of the rear sealing cover, is pressed between the rear sealing cover and the pressure-resistant shell, a middle flange and a front sealing cover are sequentially arranged in front of the pressure-resistant shell, the front sealing cover is fixedly connected with the middle flange, and the middle flange is fixedly connected with the front end of the pressure-resistant shell;

a motor flange is arranged between the middle flange and the speed reducer, the rear end of the motor flange is fixedly connected with the speed reducer shell, the front end of the motor flange is fixedly connected with the middle flange, and the outer surface of the motor flange is fixedly connected with the pressure-resistant shell.

The front end of the front sealing cover is fixedly connected with the sealing end cover.

A movable seal is arranged between the front seal cover and the transmission shaft, a movable seal groove is arranged on the inner surface of the front seal cover, a movable seal ring is arranged in the movable seal groove, and a plurality of O-shaped seal rings are arranged between the intermediate flange and the pressure-resistant shell.

Angular contact bearings II are arranged between the middle flange and the transmission shaft and between the front sealing cover and the transmission shaft, and the two sets of angular contact bearings II are installed in a centering mode. The stability of the transmission shaft is ensured, and the output stability of the transmission shaft is improved while the axial force resistance is enhanced.

The impact unit comprises a drill rod, a drill bit and a core taking sleeve, the rear end of the drill rod penetrates through the power rotation unit and is connected with the transmission shaft through an elastic sleeve pin coupler, the drill bit is fixed at the front end of the drill rod, the core taking sleeve is arranged inside the front side of the drill rod, and an angular contact bearing I is arranged between the drill rod and the front fixing end cover.

The invention has the beneficial effects that:

(1) the impact drilling machine realizes the rotation and impact motion of the drilling tool by utilizing the vibration of the piezoelectric quartz crystal, can crush rock by means of high-frequency impact motion under the conditions of low drilling pressure and low drilling power consumption, and effectively improves the comprehensive energy consumption ratio of the deep sea drilling rig;

(2) the percussion drill has the advantages that the percussion motion of the percussion drill can be independently adjusted, the vibration self-amplifying structure based on the mass lever principle is selected by utilizing the mass lever effect and the energy conversion vibration unit configuration of an unstable structure, the large-depth efficient coring operation is realized, the coring precision is high, and the working efficiency of percussion drilling is improved by more than 2 times compared with that of the conventional drill;

(3) meanwhile, the drilling machine also has the horizontal coring capability in a cliff blind area under the deep sea environment;

(4) the impact drilling machine can be matched with large deep-sea carrying equipment such as an unmanned cable-controlled submersible, a manned submersible and the like for operation, effectively combines the fine operation advantages of the deep-sea carrying submersible with a drilling technology, and has a good application prospect in deep-sea operation.

Drawings

FIG. 1 is a schematic cross-sectional structural view of the present invention;

fig. 2 is a schematic structural view of the vibration generating unit and the impact unit.

In the figure: 1, clamping a handle by a manipulator; 2, sealing the cover; 3, a pressure-resistant shell; 4, a brushless direct current motor; 5, a speed reducer; 6, a motor flange; 7, front sealing cover; 8, moving a sealing ring; 9 a transmission shaft; 10 vibration generating unit cabin body; 11 piezoelectric vibrating crystal array; 12 a front stabilizing spring; 13 front fixing end cover; 14 drill pipes; 15 a drill bit; 16 coring cannula; 17 angular contact bearing I; 19 an elastic sleeve pin coupling; after 20, stabilizing the spring; 21 rear fixed end cover; 22 sealing the end cap; 23 angular contact shaft II; 24 an intermediate flange; a 25O-shaped sealing ring; 26 deep sea oil filled compensation membranes; 28 sealing the end cap; 29 impact the receiving flange.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

As shown in figure 1, the core sampling impact drilling machine of the deep sea carrier comprises a power rotary unit, a vibration generating unit and an impact unit, wherein the vibration generating unit is positioned between the power rotary unit and the impact unit, the vibration generating unit plays a role in generating vibration while connecting the power rotary unit and the impact unit, the power rotary unit drives the impact unit to rotate, and the vibration generating unit drives the impact unit to vibrate back and forth, so that the front and back impact motion of the whole impact drilling machine is realized.

The power rotary unit comprises a manipulator clamping handle 1, a rear sealing cover 2, a pressure-resistant shell 3, a brushless direct current motor 4, a speed reducer 5, a front sealing cover 7, a transmission shaft 9, a sealing end cover 22 and a deep-sea oil-filled compensation membrane 26. The front end and the rear end of the pressure-resistant shell 3 are respectively fixed with a front sealing cover 7 and a rear sealing cover 2, the pressure-resistant shell 3 and the front sealing cover 7 form a closed cavity, and the brushless direct current motor 4, the speed reducer 5 and the transmission shaft 9 are all arranged in the cavity. The output shaft of the brushless DC motor 4 is connected with the speed reducer 5, the transmission shaft 9 is connected with the output shaft of the speed reducer 5, and the rotating speed output by the brushless DC motor 4 is reduced by the speed reducer 5 and then transmitted to the transmission shaft 9, so that the transmission shaft 9 is driven to rotate. The transmission shaft 9 is connected to the vibration generating unit. The manipulator clamping handle 1 is fixedly arranged at the rear part of the rear sealing cover 2, and the drilling machine can be placed to a specified position through the manipulator clamping handle 1.

The deep sea oil filling compensation diaphragm 26 is fixed on the inner side of the rear sealing cover 2, the deep sea oil filling compensation diaphragm 26 is pressed between the rear sealing cover 2 and the pressure-resistant shell 3, a water leakage port is formed in the rear sealing cover 2, and seawater can enter a deep sea oil filling compensation cavity of the deep sea oil filling compensation diaphragm 26 through the water leakage port to realize elastic change of the diaphragm. In the submerging process of the drilling machine, the pressure difference between the cavity of the power rotary unit and the external deep water environment is actively adjusted through the deep-sea oil-filled compensation diaphragm 26 and the deep-sea oil-filled compensation cavity, so that the small pressure difference is always kept, and the working safety of the drilling machine is ensured.

The middle flange 24 and the front cover 7 are arranged in front of the pressure casing 3 in sequence, wherein the front cover 7 is connected with the middle flange 24 behind the front cover 7 through screws, and the middle flange 24 is fixedly connected with the front end of the pressure casing 3 through screws, so that the fixed connection between the front cover 7 and the pressure casing 3 is realized. A motor flange 6 is arranged between the middle flange 24 and the speed reducer 5, the rear end of the motor flange 6 is fixedly connected with the speed reducer shell through screws, the front end of the motor flange 6 is fixedly connected with the middle flange 24 through screws, and meanwhile, the outer surface of the motor flange 6 is fixedly connected with the pressure shell 3 through screws, so that the fixed connection among the front sealing cover 7, the middle flange 24, the motor flange 6, the speed reducer shell and the pressure shell 3 is realized. The front end of the front sealing cover 7 is fixedly connected with the sealing end cover 22, an O-shaped sealing ring is arranged at the sealing end cover 22, and the deep sea underwater pressure-resistant sealing is realized through the static sealing design.

The middle flange 24 and the front sealing cover 7 are respectively provided with a central hole, the transmission shaft 9 is positioned in the central holes of the middle flange 24 and the front sealing cover 7, the rear end of the transmission shaft 9 is connected with the speed reducer 5, and the front end of the transmission shaft 9 is connected with the vibration generating unit. A dynamic seal is arranged between the front seal cover 7 and the transmission shaft 9, a dynamic seal groove is arranged on the inner surface of the front seal cover 7, and a dynamic seal ring 8 is arranged in the dynamic seal groove. A plurality of O-rings 25 are provided between the intermediate flange 24 and the pressure casing 3. Angular contact bearings II 23 are arranged between the middle flange 24 and the transmission shaft 9 and between the front sealing cover 7 and the transmission shaft 9, and the two sets of angular contact bearings II 23 are installed in a centering mode, so that the stability of the transmission shaft 9 is guaranteed, and the output stability of the transmission shaft is improved while the axial force resistance is enhanced.

As shown in fig. 1 and 2, the vibration generating unit includes a vibration generating unit cabin 10, a rear fixing end cover 21, a front fixing end cover 13, a rear stabilizing spring 20, a front stabilizing spring 12, a piezoelectric vibration crystal array 11 and an elastic sleeve pin coupling 19, the rear fixing end cover 21 is fixed at the rear end of the vibration generating unit cabin 10, the front fixing end cover 13 is fixed at the front end of the vibration generating unit cabin 10, and the rear stabilizing spring 20, the front stabilizing spring 12, the piezoelectric vibration crystal array 11 and the elastic sleeve pin coupling 19 are all disposed in the vibration generating unit cabin 10. The piezoelectric vibrating crystal array 11 is placed on the impact receiving flange 29, and the impact receiving flange 29 provides a supporting function. The elastic sleeve pin coupler 19 is placed at the top of the piezoelectric vibration crystal array 11, and the elastic sleeve pin coupler 19 is connected with the rear fixed end cover 21 through a rear stabilizing spring 20. A sealing end cover 28 is fixed on the inner side of the front fixed end cover 13 and is provided with an O-shaped ring, so that static sealing design can be realized, and deep-sea underwater pressure-resistant sealing can be realized. The sealing end cap 28 is connected to the impact receiving flange 29 by the front stabilizing spring 12. The piezoelectric vibration crystal array 11 is formed by alternately connecting a plurality of annular piezoelectric quartz crystals and electrode plates from top to bottom at intervals, a sinusoidal excitation voltage signal is applied to the piezoelectric quartz crystals, and the polar quartz crystals perform relative displacement on internal positive and negative charge centers by utilizing a piezoelectric effect, so that electric energy is converted into mechanical energy. By arranging the stabilizing spring and the fixed end cover at the front end and the rear end of the piezoelectric vibration crystal array 11 respectively, an unstable structure of an upper stabilizing spring, a piezoelectric quartz crystal array and a lower stabilizing spring is formed between the rear fixed end cover 21 and the front fixed end cover 13, and the piezoelectric quartz crystal array 11 is compressed between the rear stabilizing spring 20 and the front stabilizing spring 12, so that the vibration of the piezoelectric quartz crystal array can be amplified.

The elastic sleeve pin coupling 19 serves to connect the drive shaft 9 to the drill rod in the percussion unit and to transmit the rotary motion of the drive shaft 9 to the percussion unit. Meanwhile, the mass of the elastic sleeve pin coupler 19 is larger than that of the piezoelectric vibration crystal array 11, and the elastic sleeve pin coupler is added into an unstable structure of an upper stabilizing spring, a piezoelectric quartz crystal array and a lower stabilizing spring, so that a self-amplification unstable mechanism with a mass lever effect is realized. When the piezoelectric quartz crystal array vibrates by a sinusoidal excitation voltage, the elastic sleeve pin coupling 19 can amplify the vibration by a mass lever effect and continuously operate.

When an electric field is applied in the polarization direction of the piezoelectric crystal array 11, the piezoelectric crystal array 11 will generate a mechanical deformation in a linear relationship along the polarization direction, and when the piezoelectric crystal array 11 is excited by a resonant sinusoidal voltage, the internal positive and negative charge centers of the polar quartz crystal are relatively displaced under the influence of the piezoelectric effect, so as to generate axial reciprocating vibration. Under the dual effects of the unstable structure and the mass lever effect of the vibration generating unit, the axial vibration transmitted by the piezoelectric vibration crystal array 11 is amplified, the axial vibration is further amplified through the lever effect of the elastic sleeve pin coupling 19, the high-frequency longitudinal reciprocating vibration is converted into low-frequency impact motion, and the axial vibration energy is transmitted to the impact unit for crushing rocks.

The impact unit comprises a drill rod 14, a drill bit 15 and a coring sleeve 16, the rear end of the drill rod 14 penetrates through the power rotary unit and is connected with the transmission shaft 9 through an elastic sleeve pin coupling 19, the drill bit 15 is fixed at the front end of the drill rod 14, and the coring sleeve 16 is arranged inside the front side of the drill rod 14. An angular contact bearing I17 is arranged between the drill rod 14 and the front fixed end cover 13, and the angular contact bearing I17 is used for matching and positioning. The bit 15 is a PDC diamond bit, the diameter of the bit is 35mm, and the maximum drillable depth is 100 mm. In the rotation process of the transmission shaft 9, the elastic sleeve pin coupling 19 drives the drill rod 14 to rotate; meanwhile, the axial vibration generated by the vibration generating unit is transmitted to the drill rod 14 through the elastic sleeve pin coupling 19 to drive the drill rod to do axial impact motion.

The working process of the invention is as follows: before flood dragon submarine operation, install this percussion drill to the sampling platform department of submarine front end, fasten through flexible flat board to flood the manned submarine with flood dragon to appointed degree of depth and carry out the operation. In the submergence process, the pressure difference between the cabin and the external deep water environment is actively adjusted through the deep sea oil-filled compensation membrane 26 and the deep sea oil-filled compensation cavity, so that the pressure difference is always kept small, and the working safety of the drilling machine is ensured. The flood dragon number underwater vehicle cruises through high-definition video signals and arrives at the bottom of the designated area to take samples. During coring operation, an underwater vehicle operates the mechanical hand clamping handle 1 to vertically anchor a drill, meanwhile, the flood barrier submersible starts an automatic height setting mode, the hydraulic propelling mechanism is finely adjusted by an operator, so that a drill bit in the drill is slowly loaded to a rock, 100 plus pressure is kept, the drilling pressure is ensured, the impact unit is manually opened, and the rotary motion generated by the rotary unit and the impact motion generated by the impact unit are compounded to form the rotary impact motion of the drill bit. And after coring is finished, operating the mechanical hand to put the percussion drill back. After the module returns to the mother ship along with the flood dragon number, the drill bit is manually disassembled, and the rock core sample is taken out.

The device has realized the high-efficient coring operation of big degree of depth, and it is high to get the core precision, obtains through the experiment, and the device's work efficiency improves more than 2 times than past drilling rig of the same type, and this drilling rig still has the level of cliff blind area department under the deep sea environment simultaneously and to coring ability.

The deep sea carrier core sampling percussion drill provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.