CN215520818U

CN215520818U - Core drilling device

Info

Publication number: CN215520818U
Application number: CN202121325219.0U
Authority: CN
Inventors: 饶晓; 马俊强; 杨忠亮; 谢色新; 张建国; 陈志亮; 张文宇
Original assignee: Exploration Institute Guangdong Bureau Of Coal Geology China National Administration Of Coal Geology
Current assignee: Exploration Institute Guangdong Bureau Of Coal Geology China National Administration Of Coal Geology
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-14
Anticipated expiration: 2031-06-15

Abstract

Get core and bore and get device, including the hydraulic motor speed reducer, the fixed supporting sleeve that is provided with the cover at the power shaft outside of hydraulic motor speed reducer in casing left side middle part of hydraulic motor speed reducer, the outer circumference of power shaft of hydraulic motor speed reducer is connected with the sealed rotation of the interior circumference of supporting sleeve, the coaxial transmission of power shaft left end of hydraulic motor speed reducer is connected with and gets the core drilling rod, the sealed rotation of right side portion of getting the core drilling rod is connected in supporting sleeve, the left end that the supporting sleeve was stretched out to the left side portion of getting the core drilling rod, the open core chamber of getting in left side has been seted up at the middle part of getting the core drilling rod, the left end of getting the core drilling rod is connected with and gets the core bit, it is hollow drill bit to get the core bit, the internal diameter of getting the core bit is the same with the internal diameter of getting the core chamber, it cuts the system and spouts gluey leak protection gas system to be provided with the circular cutting on the core drilling rod, it is provided with cooling pipeline system to get on the core bit. The utility model has scientific design, can perform circular cutting and truncation on the rock core, has flat rock core section and simple coring, and avoids the damage to the rock core and a coring drilling tool.

Description

Core drilling device

Technical Field

The utility model relates to the technical field of core drilling, in particular to a core drilling device.

Background

The core is an important material for researching and knowing underground geology and mineral production conditions, for example, in the exploration and development of oil and gas fields, according to stratum horizons and design depths obtained by exploration, a coring tool is put into a well after drilling, and the core is drilled, so that the characteristics of underground oil layers and contained fluids are known.

When coring, the core is usually broken, which is easy to damage the core and the core drill, and the section of the core is not flat.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a core drilling device which is scientific in design, can perform circular cutting and truncation on a rock core, is smooth in rock core section, is simple to core and avoids damage to the rock core and a core drilling tool.

In order to achieve the purpose, the utility model adopts the following technical scheme:

get core and bore and get device, including the hydraulic motor speed reducer, the fixed supporting sleeve that is provided with the cover at the power shaft outside of hydraulic motor speed reducer in casing left side middle part of hydraulic motor speed reducer, the outer circumference of power shaft of hydraulic motor speed reducer is connected with the sealed rotation of the interior circumference of supporting sleeve, the coaxial transmission of power shaft left end of hydraulic motor speed reducer is connected with and gets the core drilling rod, the sealed rotation of right side portion of getting the core drilling rod is connected in supporting sleeve, the left end that the supporting sleeve was stretched out to the left side portion of getting the core drilling rod, the open core chamber of getting in left side has been seted up at the middle part of getting the core drilling rod, the left end of getting the core drilling rod is connected with and gets the core bit, it is hollow drill bit to get the core bit, the internal diameter of getting the core bit is the same with the internal diameter of getting the core chamber, it cuts the system and spouts gluey leak protection gas system to be provided with the circular cutting on the core drilling rod, it is provided with cooling pipeline system to get on the core bit.

The circular cutting cut-off system comprises four cylindrical circular cutting knives, circular cutting through holes of four circumference arrays are formed in the left side part of the outer circumference of a core drilling rod, the circular cutting through holes are arranged along the radial direction, the inner ends of the circular cutting through holes are communicated with the inside of a core cavity, the four cylindrical circular cutting knives are arranged in the four circular cutting through holes in a sliding mode respectively and correspondingly, circular end covers used for sealing and plugging the circular cutting through holes are installed on the outer circumference of the core drilling rod at the outer ends of the circular cutting through holes, the inner ends of the cylindrical circular cutting knives are conical cutting edges, the inner ends of the cylindrical circular cutting knives are flush with the inner ends of the circular cutting through holes, the outer ends of the cylindrical circular cutting knives are located in the circular cutting through holes, force application blind holes with outer openings are formed in the middle parts of the outer end faces of the cylindrical circular cutting knives, first tension springs are connected between the bottoms of the inner surfaces of the force application blind holes and the middle parts of the inner surfaces of the circular end covers, a hydraulic circular ring cavity is arranged on the same center of the left side part of the core drilling rod, a plurality of the core drilling rod are arranged in a manner of the first ring cutter and respectively correspondingly communicated with the first circular cutting through holes The oil supply channel, open and control spaced first hydraulic pressure annular about and open the outside is seted up to the outer circumference right flank portion of coring drilling rod, second hydraulic pressure annular and cooling ring groove, the upside of coring drilling rod is equipped with the second oil supply channel who communicates first hydraulic pressure annular and hydraulic pressure ring cavity along the axial, the upper portion of the left side of support sleeve has radially seted up first oil transportation passageway, the inner and the first hydraulic pressure annular intercommunication of first oil transportation passageway, the outer end of first oil transportation passageway is connected with first oil feed pipe through first oil supply joint, the chamber bottom center of coring chamber is equipped with the atmospheric pressure recess, coring drilling rod middle part downside is equipped with the atmospheric pressure passageway with the atmospheric pressure recess intercommunication, the outer end of atmospheric pressure passageway is located coring drilling rod lower part and installs the air entrainment sealed lid.

The glue spraying air leakage preventing system comprises two fan-shaped spray heads, a glue supplying ring cavity positioned on the left side of the hydraulic ring cavity is concentrically arranged at the left end part of the coring drill rod, the diameter of the glue supplying ring cavity is smaller than that of the hydraulic ring cavity, a glue spraying through hole is radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod, the two glue spraying through holes are radially symmetrical, the glue spraying through holes on the front upper side are obliquely arranged from left to right, the outer ends of the two glue spraying through holes are communicated with the glue supplying ring cavity, the inner ends of the two glue spraying through holes are communicated with the coring cavity, the two fan-shaped spray heads are respectively and fixedly arranged in the two glue spraying through holes in a sealing way, the spraying ends of the two fan-shaped spray heads are respectively flush with the inner ends of the two glue spraying through holes, the fan-shaped spray head on the front upper side sprays towards the rear lower side towards the front upper side, a glue adding channel is radially arranged on the front upper side of the left end part of the coring drill rod, the inner of the gluing channel is communicated with the glue supply circular ring cavity, the outer end of the gluing channel is provided with a glue supply sealing cover, a cylindrical hydraulic cavity is axially arranged on the front upper side of the left side of the core drill rod, an extrusion piston is arranged in the cylindrical hydraulic cavity in a sealing and sliding mode, a second tension spring is connected between the right side face of the extrusion piston and the right side face of the cylindrical hydraulic cavity, a third oil supply channel communicated with a second hydraulic ring groove and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a fourth oil supply channel communicated with the glue supply circular ring cavity and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a second oil supply channel is radially arranged on the front upper side of the middle of the supporting sleeve, the inner end of the second oil supply channel is communicated with the second hydraulic ring groove, and the outer end of the second oil supply channel is connected with a second oil pipe through a second oil supply connector.

The cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit, a cooling ring cavity is arranged in the middle of the coring bit in the same center, a plurality of first cooling liquid channels which are respectively communicated with the cooling ring cavity and each cooling liquid spray hole are axially arranged at the left side of the coring bit, a second cooling liquid channel which is communicated with the left side and the right side of the coring bit and the front lower part of the coring drill rod in the front is axially arranged, the left end of the second cooling liquid channel is communicated with the cooling ring cavity, the right end of the second cooling liquid channel is communicated with the cooling ring groove, a water delivery channel is radially arranged at the front lower side of the right side of the supporting sleeve, the inner end of the water delivery channel is communicated with the cooling ring groove, the outer end of the water delivery channel is connected with a cooling liquid supply pipe through a water supply joint, and an electric stop valve is arranged on the cooling liquid supply pipe.

Compared with the prior art, the utility model has outstanding substantive characteristics and remarkable progress, and specifically, the working principle of the utility model is as follows: starting a hydraulic motor speed reducer, opening an electric stop valve, driving a power shaft of the hydraulic motor speed reducer to drive a corresponding coring drill rod to rotate at a high speed, driving the coring drill rod to rotate at a high speed, controlling piston rods of two second hydraulic cylinders to extend simultaneously, pushing the hydraulic motor speed reducer to move towards a rock stratum, drilling the rock stratum by the coring drill rod, simultaneously, enabling cooling liquid to pass through corresponding cooling liquid supply pipes, water supply connectors, water delivery channels, cooling ring grooves, second cooling liquid channels, cooling ring cavities, all first cooling liquid channels and all cooling liquid spray holes to be sprayed out from the outer end face of the coring drill bit, cooling the coring drill bit, and filling the coring drill rod into the rock stratum for a certain distance The first oil supply joint, the first oil delivery channel, the first hydraulic ring groove and the second oil supply channel pump hydraulic oil into the hydraulic ring cavity, the hydraulic oil in the hydraulic ring cavity is injected into each ring cutting through hole through each first oil supply channel, the pressure of the hydraulic oil is greater than the tension of each first tension spring, the hydraulic oil presses each cylindrical ring cutter to synchronously move inwards, the inner end of each cylindrical ring cutter extends inwards into the coring cavity and presses against the outer circumference of the rock core, each cylindrical ring cutter rotates along with the coring drill rod to cut the rock core, each cylindrical ring cutter gradually moves inwards under the action of the hydraulic oil until the inner end of each cylindrical ring cutter extends into the center of the coring cavity to cut the rock core, the section of the rock core is flat, the oil pressure is discharged, the hydraulic oil pressure is reduced to zero, each cylindrical ring cutter outwards moves to reset into each ring cutting through hole under the action of each first tension spring, stopping rotation of a hydraulic motor reducer, closing an electric stop valve, pumping hydraulic oil into a cylindrical hydraulic cavity through a second oil supply pipe, a second oil supply joint, a second oil delivery channel, a second hydraulic ring groove and a third oil supply channel, wherein initially, a glue adding sealing cover is opened in advance, glue solution is fully added into a glue supply ring cavity through the glue adding channel, then the glue adding sealing cover is screwed, the hydraulic oil pressure is greater than the tension force of a second tension spring, the hydraulic oil presses an extrusion piston to enable the extrusion piston to move leftwards, the extrusion piston extrudes the glue solution to enable the glue solution to be sprayed out through two fan-shaped spray heads and respectively and uniformly sprayed on a rock core section, the glue solution penetrates into a gap between the rock core section and the inner wall of a core taking cavity and is solidified, the gap between the rock core section and the inner wall of the core taking cavity is blocked, gas contained in the rock core is prevented from escaping, and then the hydraulic motor reducer is pulled to move reversely, the core drill rod and the core drill bit are taken out from the drill hole, so that the core taking work of the rock core is completed, the core drill bit can be firstly detached in order to obtain the rock core in the core taking cavity, the solidified glue is cut off by using a cutter, then the air-entrapping sealing cover is opened, the air pressure channel is connected with the air pump at the outer end, high-pressure air is injected into the air pressure groove through the air pressure channel, and the rock core is pushed out from the core taking cavity of the core drill rod by air.

The utility model has scientific design, can perform circular cutting and truncation on the rock core, has flat rock core section and simple coring, and avoids the damage to the rock core and a coring drilling tool.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 2.

Fig. 4 is a sectional view taken along line C-C of fig. 2.

Fig. 5 is a sectional view taken along line D-D of fig. 2.

Fig. 6 is a partial enlarged view of fig. 4 at E.

Detailed Description

The embodiments of the present invention are further described below with reference to the drawings.

As shown in fig. 1-6, the coring drilling device comprises a hydraulic motor reducer 1, a supporting sleeve 2 sleeved outside a power shaft of the hydraulic motor reducer 1 is fixedly arranged in the middle of the left side of a casing of the hydraulic motor reducer 1, the outer circumference of the power shaft of the hydraulic motor reducer 1 is connected with the inner circumference of the supporting sleeve 2 in a sealing and rotating manner, a coring drill rod 3 is connected with the left end of the power shaft of the hydraulic motor reducer 1 in a coaxial transmission manner, the right side part of the coring drill rod 3 is connected in the supporting sleeve 2 in a sealing and rotating manner, the left side part of the coring drill rod 3 extends out of the left end of the supporting sleeve 2, a coring cavity 4 with an opening on the left side is arranged in the middle of the coring drill rod 3, the left end of the coring drill rod 3 is connected with a coring bit 5, the coring bit 5 is a hollow bit, the inner diameter of the coring bit 5 is the same as the inner diameter of the coring cavity 4, and the coring drill rod 3 is provided with a circular cutting system and a glue-spraying anti-leakage system, the coring bit 5 is provided with a cooling pipeline system.

The circular cutting and cutting system comprises four cylindrical circular cutters 6, the left side part of the outer circumference of a coring drill rod 3 is provided with four circular cutting through holes 7 in a circumferential array, the circular cutting through holes 7 are arranged along the radial direction, the inner ends of the circular cutting through holes 7 are communicated with the inside of a coring cavity 4, the four cylindrical circular cutters 6 are respectively arranged in the four circular cutting through holes 7 in a corresponding sliding manner, a circular end cover 8 for sealing and plugging the circular cutting through holes 7 is arranged on the outer circumference of the coring drill rod 3 at the outer ends of the circular cutting through holes 7, the inner ends of the cylindrical circular cutters 6 are conical blades, the inner ends of the cylindrical circular cutters 6 are flush with the inner ends of the circular cutting through holes 7, the outer ends of the cylindrical circular cutters 6 are positioned in the circular cutting through holes 7, the middle part of the outer end surface of the cylindrical circular cutters 6 is provided with a force application blind hole 9 with an opening at the outer side, and a first tension spring 10 is connected between the bottom of the force application blind hole 9 and the middle part of the inner surface of the circular end cover 8, a hydraulic circular cavity 11 is concentrically arranged at the left side part of the coring drill rod 3, a plurality of first oil supply channels 12 which are respectively communicated with the hydraulic circular cavity 11 and each circular cutting through hole 7 are correspondingly arranged at the left side part of the coring drill rod 3, a first hydraulic ring groove 13, a second hydraulic ring groove 14 and a cooling ring groove 15 which are opened at the outer side and spaced from each other at the left side are arranged at the right side part of the outer circumference of the coring drill rod 3, a second oil supply channel 16 which is communicated with the first hydraulic ring groove 13 and the hydraulic circular cavity 11 is axially arranged at the upper side part of the left side of the supporting sleeve 2, a first oil conveying channel 17 is radially arranged at the upper part of the left side of the supporting sleeve 2, the inner end of the first oil conveying channel 17 is communicated with the first hydraulic ring groove 13, the outer end of the first oil conveying channel 17 is connected with a first oil supply pipe 19 through a first oil supply joint 18, an air pressure groove 20 is arranged at the center of the bottom of the coring cavity 4, an air pressure channel 21 which is communicated with the air pressure groove 20 is arranged at the lower side of the middle part of the coring drill rod 3, the outer end of the air pressure channel 21 is positioned at the lower side part of the coring drill rod 3 and is provided with an air-entrapping sealing cover 22.

The glue spraying air leakage prevention system comprises two fan-shaped spray heads 23, a glue supply ring cavity 24 positioned on the left side of the hydraulic ring cavity 11 is concentrically arranged at the left end part of the coring drill rod 3, the diameter of the glue supply ring cavity 24 is smaller than that of the hydraulic ring cavity 11, glue spraying through holes 25 are radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod 3, the two glue spraying through holes 25 are radially symmetrical, the glue spraying through holes 25 on the front upper side are obliquely arranged in the left and right directions outside the glue spraying through holes 25, the outer ends of the two glue spraying through holes 25 are communicated with the glue supply ring cavity 24, the inner ends of the two glue spraying through holes 25 are communicated with the coring cavity 4, the two fan-shaped spray heads 23 are respectively and fixedly installed in the two glue spraying through holes 25 in a sealing way, the spraying ends of the two fan-shaped spray heads 23 are respectively flush with the inner ends of the two glue spraying through holes 25, the fan-shaped spray head 23 on the front upper side sprays towards the rear lower side, the fan-shaped spray head 23 on the rear lower side sprays towards the front upper side, a glue adding channel 42 is radially arranged on the front upper side of the left end part of the coring drill rod 3, the inner end of the glue adding channel 42 is communicated with the glue supply circular ring cavity 24, the outer end of the glue adding channel 42 is provided with a glue adding sealing cover 26, the front upper side of the left side part of the coring drill rod 3 is axially provided with a cylindrical hydraulic cavity 27, the cylindrical hydraulic cavity 27 is internally provided with an extrusion piston 28 in a sealing and sliding manner, a second tension spring 29 is connected between the right side surface of the extrusion piston 28 and the right side surface of the cylindrical hydraulic cavity 27, the front upper side of the coring drill rod 3 is axially provided with a third oil supply channel 30 communicated with the second hydraulic ring groove 14 and the cylindrical hydraulic cavity 27, the front upper side of the left end part of the coring drill rod 3 is axially provided with a fourth oil supply channel 31 communicated with the glue supply circular ring cavity 24 and the cylindrical hydraulic cavity 27, the front upper side of the middle part of the support sleeve 2 is radially provided with a second oil delivery channel 32, the inner end of the second oil delivery channel 32 is communicated with the second hydraulic ring groove 14, and the outer end of the second oil delivery channel 32 is connected with a second oil supply pipe 34 through a second oil supply joint 33.

The cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit 5, a cooling circular ring cavity 35 is concentrically arranged in the middle of the coring bit 5, a plurality of first cooling liquid channels 36 which are respectively and correspondingly communicated with the cooling circular ring cavity 35 and each cooling liquid spray hole are axially arranged at the left side of the coring bit 5, a left-right through second cooling liquid channel 37 is axially arranged at the front lower part of the right side of the coring bit 5 and the front lower part of the coring drill rod 3, the left end of the second cooling liquid channel 37 is communicated with the cooling circular ring cavity 35, the right end of the second cooling liquid channel 37 is communicated with the cooling circular ring groove 15, a water delivery channel 38 is radially arranged at the front lower side of the right side of the support sleeve 2, the inner end of the water delivery channel 38 is communicated with the cooling circular ring groove 15, and the outer end of the water delivery channel 38 is connected with a cooling liquid supply pipe 40 through a water supply joint 39, an electric shutoff valve 41 is provided to the coolant supply pipe 40.

The working principle of the utility model is as follows: starting the hydraulic motor speed reducer 1, opening the electric stop valve 41, driving the corresponding coring drill rod 3 to rotate at high speed by the power shaft of the hydraulic motor speed reducer 1, driving the coring drill bit 5 to rotate at high speed by the coring drill rod 3, controlling the piston rods of the two second hydraulic cylinders to extend out simultaneously, pushing the hydraulic motor speed reducer 1 to move towards the rock stratum, drilling the rock stratum by the coring drill bit 5, simultaneously spraying the cooling liquid from the outer end surface of the coring drill bit 5 through the corresponding cooling liquid supply pipe 40, the water supply joint 39, the water delivery channel 38, the cooling ring groove 15, the second cooling liquid channel 37, the cooling ring cavity 35, each first cooling liquid channel 36 and each cooling liquid spray hole to cool the coring drill bit 5, drilling the coring drill rod 3 into the rock stratum for a certain distance, filling the coring cavity 4 of the coring drill rod 3 with a section of cylindrical rock core under the drilling action of the coring drill bit 5, then the hydraulic motor reducer 1 stops moving, hydraulic oil is pumped into the hydraulic ring cavity 11 through the first oil supply pipe 19, the first oil supply joint 18, the first oil delivery channel 17, the first hydraulic ring groove 13 and the second oil supply channel 16, the hydraulic oil in the hydraulic ring cavity 11 is injected into each circular cutting through hole 7 through each first oil supply channel 12, the hydraulic oil pressure is greater than the pulling force of each first tension spring 10, the hydraulic oil presses each cylindrical ring cutter 6 to synchronously move inwards, the inner end of each cylindrical ring cutter 6 extends inwards into the coring cavity 4 and pushes against the outer circumference of the rock core, each cylindrical ring cutter 6 rotates along with the coring drill rod 3 to cut the rock core, each cylindrical ring cutter 6 gradually moves inwards under the action of the hydraulic oil until the inner end of each cylindrical ring cutter 6 extends into the center of the coring cavity 4 to cut the rock core, the rock core has a flat section, then the oil pressure is unloaded, the hydraulic oil pressure is reduced to zero, each cylindrical ring cutter 6 moves outwards under the action of each first tension spring 10 and returns to each ring-cut through hole 7, the hydraulic motor reducer 1 stops rotating, the electric stop valve 41 is closed, then the second oil supply pipe 34, the second oil supply joint 33, the second oil delivery channel 32, the second hydraulic ring groove 14 and the third oil supply channel 30 pump hydraulic oil into the cylindrical hydraulic cavity 27, wherein, initially, the glue adding sealing cover 26 is opened in advance, glue solution is fully added into the glue supply ring cavity 24 through the glue adding channel 42, then the glue adding sealing cover 26 is screwed, the hydraulic oil pressure is greater than the pulling force of the second tension spring 29, the hydraulic oil presses the extrusion piston 28 to enable the extrusion piston 28 to move leftwards, the extrusion piston 28 extrudes the glue solution, the glue solution is ejected through the two fan-shaped nozzles 23 and is respectively and uniformly sprayed on the rock core section, the glue solution permeates into a gap between the rock core section and the inner wall of the coring cavity 4 and is solidified, make the gap shutoff between core section and the 4 inner walls of coring chamber, ensure that the gas that contains in the core can not escape, then pull 1 reverse movement of hydraulic motor speed reducer, make coring drilling rod 3 and coring bit 5 take out from the drilling, so, just accomplish the coring work of core, in order to obtain the core in coring chamber 4, can tear coring bit 5 off earlier, use the cutter to scratch the gluey that solidifies, then open air entrainment sealed lid 22, connect the air pump with atmospheric pressure passageway 21 outer end, inject high-pressure gas into atmospheric pressure recess 20 through atmospheric pressure passageway 21, gas pushes out the core from coring chamber 4 of coring drilling rod 3.

The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model and it is intended to cover in the claims the utility model as defined in the appended claims.

Claims

1. Coring bores gets device, its characterized in that: including the hydraulic motor speed reducer, the fixed supporting sleeve that is provided with the cover at the power shaft outside of hydraulic motor speed reducer in casing left side middle part of hydraulic motor speed reducer, the outer circumference of power shaft of hydraulic motor speed reducer is connected with the sealed rotation of the interior circumference of supporting sleeve, the coaxial transmission of power shaft left end of hydraulic motor speed reducer is connected with the core drilling rod, the sealed rotation of right side portion of coring drilling rod is connected in the supporting sleeve, the left end that stretches out the supporting sleeve of left side portion of coring drilling rod, the open core chamber of getting in left side has been seted up at the middle part of coring drilling rod, the left end of coring drilling rod is connected with the coring bit, the coring bit is the cavity bit, the internal diameter of coring bit is the same with the internal diameter of getting the core chamber, be provided with the circular cutting on the coring drilling rod and cut system and spout gluey leak protection gas system, be provided with cooling pipeline system on the bit.

2. The coring drilling device of claim 1, wherein: the circular cutting cut-off system comprises four cylindrical circular cutting knives, circular cutting through holes of four circumference arrays are formed in the left side part of the outer circumference of a core drilling rod, the circular cutting through holes are arranged along the radial direction, the inner ends of the circular cutting through holes are communicated with the inside of a core cavity, the four cylindrical circular cutting knives are arranged in the four circular cutting through holes in a sliding mode respectively and correspondingly, circular end covers used for sealing and plugging the circular cutting through holes are installed on the outer circumference of the core drilling rod at the outer ends of the circular cutting through holes, the inner ends of the cylindrical circular cutting knives are conical cutting edges, the inner ends of the cylindrical circular cutting knives are flush with the inner ends of the circular cutting through holes, the outer ends of the cylindrical circular cutting knives are located in the circular cutting through holes, force application blind holes with outer openings are formed in the middle parts of the outer end faces of the cylindrical circular cutting knives, first tension springs are connected between the bottoms of the inner surfaces of the force application blind holes and the middle parts of the inner surfaces of the circular end covers, a hydraulic circular ring cavity is arranged on the same center of the left side part of the core drilling rod, a plurality of the core drilling rod are arranged in a manner of the first ring cutter and respectively correspondingly communicated with the first circular cutting through holes The oil supply channel, open and control spaced first hydraulic pressure annular about and open the outside is seted up to the outer circumference right flank portion of coring drilling rod, second hydraulic pressure annular and cooling ring groove, the upside of coring drilling rod is equipped with the second oil supply channel who communicates first hydraulic pressure annular and hydraulic pressure ring cavity along the axial, the upper portion of the left side of support sleeve has radially seted up first oil transportation passageway, the inner and the first hydraulic pressure annular intercommunication of first oil transportation passageway, the outer end of first oil transportation passageway is connected with first oil feed pipe through first oil supply joint, the chamber bottom center of coring chamber is equipped with the atmospheric pressure recess, coring drilling rod middle part downside is equipped with the atmospheric pressure passageway with the atmospheric pressure recess intercommunication, the outer end of atmospheric pressure passageway is located coring drilling rod lower part and installs the air entrainment sealed lid.

3. The coring drilling device of claim 2, wherein: the glue spraying air leakage preventing system comprises two fan-shaped spray heads, a glue supplying ring cavity positioned on the left side of the hydraulic ring cavity is concentrically arranged at the left end part of the coring drill rod, the diameter of the glue supplying ring cavity is smaller than that of the hydraulic ring cavity, a glue spraying through hole is radially arranged on the front upper side and the rear lower side of the left end part of the coring drill rod, the two glue spraying through holes are radially symmetrical, the glue spraying through holes on the front upper side are obliquely arranged from left to right, the outer ends of the two glue spraying through holes are communicated with the glue supplying ring cavity, the inner ends of the two glue spraying through holes are communicated with the coring cavity, the two fan-shaped spray heads are respectively and fixedly arranged in the two glue spraying through holes in a sealing way, the spraying ends of the two fan-shaped spray heads are respectively flush with the inner ends of the two glue spraying through holes, the fan-shaped spray head on the front upper side sprays towards the rear lower side towards the front upper side, a glue adding channel is radially arranged on the front upper side of the left end part of the coring drill rod, the inner of the gluing channel is communicated with the glue supply circular ring cavity, the outer end of the gluing channel is provided with a glue supply sealing cover, a cylindrical hydraulic cavity is axially arranged on the front upper side of the left side of the core drill rod, an extrusion piston is arranged in the cylindrical hydraulic cavity in a sealing and sliding mode, a second tension spring is connected between the right side face of the extrusion piston and the right side face of the cylindrical hydraulic cavity, a third oil supply channel communicated with a second hydraulic ring groove and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a fourth oil supply channel communicated with the glue supply circular ring cavity and the cylindrical hydraulic cavity is axially arranged on the front upper side of the left end of the core drill rod, a second oil supply channel is radially arranged on the front upper side of the middle of the supporting sleeve, the inner end of the second oil supply channel is communicated with the second hydraulic ring groove, and the outer end of the second oil supply channel is connected with a second oil pipe through a second oil supply connector.

4. The coring drilling device of claim 3, wherein: the cooling pipeline system comprises a plurality of cooling liquid spray holes, each cooling liquid spray hole is uniformly arranged on the ring surface of the left end of the coring bit, a cooling ring cavity is arranged in the middle of the coring bit in the same center, a plurality of first cooling liquid channels which are respectively communicated with the cooling ring cavity and each cooling liquid spray hole are axially arranged at the left side of the coring bit, a second cooling liquid channel which is communicated with the left side and the right side of the coring bit and the front lower part of the coring drill rod in the front is axially arranged, the left end of the second cooling liquid channel is communicated with the cooling ring cavity, the right end of the second cooling liquid channel is communicated with the cooling ring groove, a water delivery channel is radially arranged at the front lower side of the right side of the supporting sleeve, the inner end of the water delivery channel is communicated with the cooling ring groove, the outer end of the water delivery channel is connected with a cooling liquid supply pipe through a water supply joint, and an electric stop valve is arranged on the cooling liquid supply pipe.