阅读说明：本技术 一种可保证土样完整的岩土钻探机构及其使用方法 (Rock-soil drilling mechanism capable of ensuring integrity of soil sample and using method thereof ) 是由 张晟 张传 路思明 李红波 伍跃胜 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种可保证土样完整的岩土钻探机构及其使用方法,钻探装置结构包括托板,所述托板边侧设置有三个均匀分布的固定板,所述固定板上固定连接有固定杆,所述固定杆底部固定连接有倾斜分布的固定杆,所述固定杆底部固定连接有水平分布的底板,所述底板用于与地面进行固定连接,所述托板上表面中间部位设置有固定架,所述固定架顶端设置有第一电机架,本发明结构稳定,使得在钻孔过程中装置不会由于晃动而造成钻孔位置偏差的现象发生,从而使得取样更加精确,同时减少对样品的扰动,并通过水箱、喷头之间的配合,可随时对钻具进行降温,从而更加有利于钻具的钻孔,使得钻具不会由于温度过高而造成变形、损坏的现象发生,大大延长了钻具的使用寿命。(The invention discloses a rock drilling mechanism capable of ensuring the integrity of a soil sample and a use method thereof, wherein a drilling device structure comprises a supporting plate, three fixing plates which are uniformly distributed are arranged at the side of the supporting plate, fixing rods are fixedly connected on the fixing plates, the bottoms of the fixing rods are fixedly connected with fixing rods which are obliquely distributed, a horizontally distributed bottom plate is fixedly connected at the bottoms of the fixing rods, the bottom plate is used for being fixedly connected with the ground, a fixing frame is arranged at the middle part of the upper surface of the supporting plate, and a first motor frame is arranged at the top end of the fixing frame. The drilling tool is prevented from deformation and damage caused by overhigh temperature, and the service life of the drilling tool is greatly prolonged.)

1. The rock and soil drilling mechanism capable of guaranteeing the completeness of the soil sample comprises a supporting plate (1) and is characterized in that three fixing plates (2) which are uniformly distributed are arranged on the side of the supporting plate (1), fixing rods (3) are fixedly connected onto the fixing plates (2), the fixing rods (3) which are obliquely distributed are fixedly connected to the bottoms of the fixing rods (3), a bottom plate (4) which is horizontally distributed is fixedly connected to the bottom of each fixing rod (3), the bottom plate (4) is fixedly connected with the ground, a fixing frame (7) is arranged in the middle of the upper surface of the supporting plate (1), a first motor frame (9) is arranged at the top end of the fixing frame (7), a first motor (8) is fixedly arranged at the bottom of the first motor frame (9), a lead screw (10) is connected to the shaft part of the first motor (8), and the lead screw (10) is rotatably connected with the fixing frame (7) through a bearing, the bottom of the screw rod (10) extends into the fixing frame (7), a threaded sleeve (11) is connected onto the screw rod (10) in a threaded manner, a sliding barrel (12) which is connected with the screw rod (10) in a vertical sliding manner is fixedly connected to the bottom of the threaded sleeve (11), a second motor frame (13) is fixedly connected to the bottom of the sliding barrel (12), a limiting mechanism is arranged between the two sides of the second motor frame (13) and the threaded sleeve (11) and the fixing frame (7), a second motor (14) is fixedly installed at the bottom of the second motor frame (13), a connecting shaft (15) is connected to the shaft part of the second motor (14), a detachable drilling tool (16) is connected to the bottom of the connecting shaft (15), the bottom of the drilling tool (16) penetrates through the middle part of the supporting plate (1) and extends to the lower part of the supporting plate (1), and a limiting sleeve (19) is arranged at the middle part of the bottom of the supporting plate (1), drilling tool (16) and stop collar (19) sliding connection, layer board (1) upper surface one side is provided with water tank (17), water tank (17) are connected with water pipe (18) through the water pump, the end connection of water pipe (18) has the shower nozzle, the shower nozzle is located the below position of stop collar (19).

2. The geotechnical drilling mechanism capable of ensuring the integrity of soil sample according to claim 1, wherein said supporting plate (1) is of circular structure, and three of said fixing plates (2) are distributed in circumferential array with the side of supporting plate (1).

3. The geotechnical drilling mechanism capable of ensuring the integrity of the soil sample according to claim 1, wherein the bottom of the bottom plate (4) is provided with evenly distributed fixing nails (5), the surface of the bottom plate (4) is provided with a sliding hole, a fixing inserted bar (6) is connected in the sliding hole in a sliding way, and the bottom of the fixing inserted bar (6) is provided with a tip structure.

4. The geotechnical drilling mechanism capable of ensuring the integrity of the soil sample according to claim 1, wherein the limiting mechanism comprises two limiting rods (20), the two limiting rods (20) are arranged on two sides of the sliding barrel (12) in parallel, the limiting rods (20) are fixed in the fixing frame (7), sliding blocks (21) are arranged on two sides of the threaded sleeve (11) and the second motor frame (13), and the sliding blocks (21) are connected with the limiting rods (20) in a sliding mode.

5. The geotechnical drilling mechanism capable of ensuring the integrity of the soil sample according to claim 4, wherein the upper and lower ends of the limiting rod (20) are sleeved with buffer springs (22), and the two ends of each buffer spring (22) are provided with buffer pads made of rubber materials.

6. The geotechnical drilling mechanism capable of ensuring the integrity of soil sample according to claim 1, wherein said fixing frame (7) is of U-shaped structure, and said fixing frame (7) is fixedly connected with the supporting plate (1) by welding.

7. The geotechnical drilling mechanism capable of ensuring the integrity of soil sample according to claim 1, the drilling tool (16) comprises a first drill rod (23) and a second drill rod (24), the first drill rod (23) and the second drill rod (24) are both of hollow semi-cylindrical structures with two open ends, the top end and the bottom of the first drill rod (23) and the second drill rod (24) are respectively provided with a semi-cylindrical connecting rod (25) and a drill bit (28), the corners of the periphery of the first drill rod (23) and the second drill rod (24) are respectively provided with a fixing lug, every two opposite fixing lugs are fixedly connected through a screw, inner cavities of the first drill rod (23) and the second drill rod (24) are provided with lining pipes (29), the outer diameter of the lining pipe (29) is matched with the inner diameter of the first drill rod (23) and the second drill rod (24).

8. The geotechnical drilling mechanism capable of ensuring the integrity of the soil sample according to claim 7, wherein a stopper (30) is arranged at the joint of the inner walls of the first drill rod (23) and the second drill rod (24) and the drill bit (28), the distance from the upper surface of the stopper (30) to the bottom of the connecting rod (25) is equal to the length of the lining pipe (29), clamping grooves are formed in the two side sides of the first drill rod (23), limiting edges (31) are correspondingly arranged on the two side sides of the second drill rod (24) and the clamping grooves, and the size of the limiting edges (31) is matched with the size of the clamping grooves.

9. The geotechnical drilling mechanism capable of ensuring the integrity of soil sample according to claim 7, a limiting block (26) is arranged on one side of the connecting rod (25), a first flange plate (27) is arranged on the outer side of the connecting rod (25), the first flange plate (27) is positioned at the bottom of the limiting block (26), the connecting shaft (15) is of a hollow structure with an opening at the bottom, the inner diameter of the connecting shaft (15) is matched with the outer diameter of the connecting rod (25), and the inner wall of the connecting shaft (15) and the limiting block (26) are correspondingly provided with a limiting groove (32), the size of the limiting block (26) is matched with that of the limiting groove (32), and the outer side of the bottom of the connecting shaft (15) is provided with a second flange (33) which is distributed corresponding to the first flange (27), the first flange plate (27) is fixedly connected with the second flange plate (33) through bolts.

10. A use method of a rock-soil drilling mechanism capable of ensuring the integrity of a soil sample is characterized by comprising the following steps:

s101: firstly, moving the device to a place needing drilling, driving a fixing nail (5) at the bottom of a bottom plate (4) into the ground for fixing, and then driving a fixing inserted bar (6) into the ground;

s201: placing the lining pipe (29) into a cavity between the first drill rod (23) and the second drill rod (24), and combining the first drill rod (23) and the second drill rod (24) together to form a complete drilling tool (16);

s301: the limiting blocks (26) on the side walls of the connecting rods (25) are aligned with the limiting grooves (32) on the inner wall of the connecting shaft (15) and inserted into the limiting grooves, and the first flange plate (27) and the second flange plate (33) are fixed through bolts;

s401: starting a first motor (8) and a second motor (14), rotating a screw rod (10) to push a second motor frame (13) to move downwards, simultaneously rotating a drilling tool (16) to drill holes, and starting a water pump to enable a spray head to spray water on the surface of the drilling tool (16) for cooling;

s501: after drilling is finished, the drilling tool (16) is moved to the position above the ground through the first motor (8), the drilling tool (16) is taken down, then the first drill rod (23) is separated from the second drill rod (24), the lining pipe (29) is taken out, a soil core is filled in the lining pipe (29), rubber plugs are sleeved on two ends of the lining pipe (29) and sealed with wax, the lining pipe (29) is thrown away, and the original structure of the stratum boundary and soil is observed.

Technical Field

The invention relates to the technical field of drilling devices, in particular to a rock-soil drilling mechanism capable of ensuring the integrity of a soil sample and a using method thereof.

Background

The geotechnical engineering investigation refers to finding out, analyzing and evaluating geological and environmental characteristics of a construction site and geotechnical engineering conditions according to requirements of construction engineering, and compiling activities of investigation files.

At present, cause rocking of device easily during drilling rig for geotechnical engineering reconnaissance, thereby make the drilling position take place the skew, be unfavorable for going on of sample, simultaneously because the emergence friction that the drilling tool lasts at the drilling process, make its temperature higher, cause the damage to the drilling tool easily, influence its life, in addition, be not convenient for take out the soil sample after the current drilling tool drilling sample is accomplished, need pry out the soil sample from the drilling tool, thereby can cause destruction to the soil sample, be not convenient for observe and test its original structure, be not convenient for transport and save the soil sample simultaneously.

Disclosure of Invention

The invention aims to provide a rock-soil drilling mechanism capable of ensuring the integrity of a soil sample and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a rock drilling mechanism capable of ensuring the integrity of a soil sample comprises a supporting plate, wherein three fixing plates are uniformly distributed on the side of the supporting plate, fixing rods are fixedly connected onto the fixing plates, obliquely distributed fixing rods are fixedly connected to the bottoms of the fixing rods, a horizontally distributed bottom plate is fixedly connected to the bottoms of the fixing rods, the bottom plate is used for being fixedly connected with the ground, a fixing frame is arranged in the middle of the upper surface of the supporting plate, a first motor frame is arranged at the top end of the fixing frame, a first motor is fixedly mounted at the bottom of the first motor frame, a lead screw is connected to the shaft portion of the first motor, the lead screw is rotatably connected with the fixing frame through a bearing, the bottom of the lead screw extends into the fixing frame, a thread sleeve is connected onto the lead screw in a threaded manner, a sliding cylinder is fixedly connected to the bottom of the thread sleeve and is in vertical sliding connection with the lead screw, and a second motor frame is fixedly connected to the bottom of the sliding cylinder, be provided with stop gear between the both sides of second motor frame and thread bush and the mount, the bottom fixed mounting of second motor frame has the second motor, second motor axial region is connected with the connecting axle, the connecting axle bottom is connected with the detachable drilling tool, the drilling tool bottom runs through the layer board middle part and extends to the layer board below, just layer board bottom middle part is provided with the stop collar, drilling tool and stop collar sliding connection, layer board upper surface one side is provided with the water tank, the water tank is connected with the water pipe through the water pump, the end connection of water pipe has the shower nozzle, the shower nozzle is located the below position of stop collar.

As a further scheme of the invention: the layer board is circular structure, and three the fixed plate is circumference array distribution and the avris of layer board, through the distribution of fixed plate for the dead lever is triangular distribution, thereby makes the layer board more firm, is favorable to the stability of device.

As a still further scheme of the invention: the bottom of bottom plate is provided with evenly distributed's staple, just the surface of bottom plate is provided with the slide opening, sliding connection has fixed inserted bar in the slide opening, just the bottom of fixed inserted bar sets up to most advanced structure, through the setting between staple and the fixed inserted bar for the bottom plate is more firm and ground contact, makes in drilling process, and the phenomenon that the device can not take place to rock.

As a still further scheme of the invention: stop gear includes the gag lever post, the gag lever post is provided with two, two gag lever post parallel distribution is in the both sides of slide cartridge, just the gag lever post is fixed in the mount, the both sides of thread bush and second motor frame all are provided with the slider, slider and gag lever post sliding connection have played limiting displacement to thread bush and slide cartridge through the cooperation between gag lever post and the slider, make it more firm at the removal in-process.

As a still further scheme of the invention: the upper and lower both ends of gag lever post all are equipped with buffer spring, just buffer spring's both ends all are provided with the blotter that rubber materials made, and through buffer spring's setting, when thread bush and second motor frame removed to the top or when the below, can play certain cushioning effect to it, prevent that rigid collision from causing the damage of device.

As a still further scheme of the invention: the fixing frame is of a U-shaped structure, the fixing frame is fixedly connected with the supporting plate through welding, and the drilling tool is convenient to mount and dismount through the U-shaped structure of the fixing frame.

As a still further scheme of the invention: the drilling tool comprises a first drilling rod and a second drilling rod, wherein the first drilling rod and the second drilling rod are of hollow semi-cylindrical structures with openings at two ends, semi-cylindrical connecting rods and drill bits are arranged at the top ends and the bottom ends of the first drilling rod and the second drilling rod respectively, fixing lugs are arranged at the corners of the periphery of the first drilling rod and the second drilling rod, every two fixing lugs are fixedly connected through screws, lining pipes are arranged in the inner cavities of the first drilling rod and the second drilling rod, the outer diameter of each lining pipe is matched with the inner diameter of the first drilling rod and the second drilling rod, the lining pipes are convenient to mount and dismount through the matching of the first drilling rod and the second drilling rod, soil cores are convenient to collect in the inner cavities of the lining pipes, and therefore the phenomenon that the bottom layer is difficult to observe and analyze due to the damage of the soil cores when the soil cores are pried out on the drilling tool can not occur, and the obtained samples can be stored and stored through the matching of the first drilling pipe and the second drilling pipe, The transportation is very convenient.

As a still further scheme of the invention: the drill bit is characterized in that a stop block is arranged at the joint of the inner walls of the first drill rod and the second drill rod and the drill bit, the distance from the upper surface of the stop block to the bottom of the connecting rod is equal to the length of the lining pipe, clamping grooves are formed in the two sides of the first drill rod, limiting edges are correspondingly arranged on the two sides of the second drill rod and the clamping grooves, the size of each limiting edge is matched with that of each clamping groove, and the first drill rod and the second drill rod are conveniently connected through the arrangement between each limiting edge and each clamping groove.

As a still further scheme of the invention: one side of connecting rod is provided with the stopper, the outside of connecting rod is provided with first ring flange, first ring flange is located the bottom of stopper, the connecting axle is open-bottomed hollow structure, the internal diameter of connecting axle is identical with the external diameter of connecting rod, just the inner wall of connecting axle corresponds with the stopper and is provided with the spacing groove, the size of stopper is identical with the size of spacing groove, just the bottom outside of connecting axle is provided with the second ring flange that corresponds the distribution with first ring flange, through bolt fixed connection between first ring flange and the second ring flange, through the cooperation between stopper and the spacing groove, be convenient for be connected between connecting rod and the connecting axle, and carry out spacingly to the connecting rod, can effectively prevent to rotate the gliding phenomenon of in-process connecting rod and take place.

The invention also discloses a using method of the rock-soil drilling mechanism capable of ensuring the integrity of the soil sample, which comprises the following steps:

s101: firstly, moving the device to a place needing drilling, driving a fixing nail at the bottom of a bottom plate into the ground for fixing, and then driving a fixing insertion rod into the ground to finish fixing the device;

s201: placing the lining pipe into a cavity between the first drill rod and the second drill rod, and then combining the first drill rod and the second drill rod together to form a complete drilling tool for fixing;

s301: the limiting blocks on the side walls of the connecting rods are aligned with the limiting grooves in the inner wall of the connecting shaft and inserted into the limiting grooves, and the first flange plate and the second flange plate are fixed through bolts to complete installation of the drilling tool;

s401: starting the first motor and the second motor, rotating the screw rod to push the second motor frame to move downwards, simultaneously rotating the drilling tool to drill holes, and starting the water pump to enable the spray head to spray water on the surface of the drilling tool for cooling;

s501: after drilling is completed, the drilling tool is moved to the upper part of the ground through the first motor, the drilling tool is taken down, the first drilling rod is separated from the second drilling rod, the lining pipe is taken out, the soil core is filled in the lining pipe, the two ends of the lining pipe are sleeved with the rubber plugs and sealed with wax, the soil core can be completely stored for a long time, the lining pipe is thrown away, and the stratum boundary and the original structure of the soil can be observed conveniently.

Compared with the prior art, the invention has the beneficial effects that:

1. the device has a stable structure, so that the device cannot cause the deviation of the drilling position due to shaking in the drilling process, the sampling is more accurate, the drilling tool can be cooled at any time through the matching of the water tank and the spray head, the drilling tool is more favorably drilled, the drilling tool cannot be deformed or damaged due to overhigh temperature, and the service life of the drilling tool is greatly prolonged.

2. Through the arrangement among the first drill rod, the second drill rod and the lining pipe, the drilling tool is simpler to operate, the disturbance to the soil body is reduced to the minimum, the disturbance degree is almost achieved, only the first drill rod is separated from the second drill rod, the lining pipe is taken out, the rubber plugs are sleeved at the two ends of the lining pipe and sealed with wax, the soil core can be completely stored for a long time, the lining pipe is thrown open, the stratum boundary and the original structure of the soil are convenient to observe, the soil sample is not (slightly) disturbed during sampling, and simultaneously the soil sample is not disturbed or slightly disturbed in all links (sample unloading, sample loading, storage, transportation, sample opening and the like) in the whole process from sampling to geotechnical experiments, so the original state of the soil sample and the quality of the geotechnical experiments are greatly improved, the soil sample is closer to the original state of the soil during geotechnical experiments, and the geotechnical experiment data can be high in reliability, the difference with in-situ test data is reduced, thereby effectively improving the construction quality of engineering investigation and the sampling quality and experimental quality.

Drawings

Fig. 1 is a schematic structural diagram of a geotechnical drilling mechanism capable of ensuring the integrity of a soil sample.

Fig. 2 is a top view of a support plate in an earth boring mechanism capable of ensuring the integrity of a soil sample.

Fig. 3 is a partially enlarged view of a portion a of the geotechnical drilling mechanism for securing integrity of a soil sample.

Fig. 4 is a schematic structural view of a drilling tool in an earth boring mechanism capable of ensuring the integrity of a soil sample.

Fig. 5 is an exploded view of a drilling tool in an earth boring mechanism for ensuring integrity of a soil sample.

Fig. 6 is a partially enlarged view of B in the geotechnical drilling mechanism for securing the integrity of the soil sample.

Fig. 7 is a schematic structural view of a connecting shaft in a geotechnical drilling mechanism capable of ensuring the integrity of a soil sample.

Fig. 8 is a bottom view of a connecting shaft in a geotechnical drilling mechanism capable of ensuring the integrity of a soil sample.

In the figure: 1. a support plate; 2. a fixing plate; 3. fixing the rod; 4. a base plate; 5. fixing nails; 6. fixing the inserted rod; 7. a fixed mount; 8. a first motor; 9. a first motor mount; 10. a screw rod; 11. a threaded sleeve; 12. a slide cylinder; 13. a second motor mount; 14. a second motor; 15. a connecting shaft; 16. drilling tools; 17. a water tank; 18. a water pipe; 19. a limiting sleeve; 20. a limiting rod; 21. a slider; 22. a buffer spring; 23. a first drill rod; 24. a second drill pipe; 25. a connecting rod; 26. a limiting block; 27. a first flange plate; 28. a drill bit; 29. a liner tube; 30. a stopper; 31. a limiting edge; 32. a limiting groove; 33. a second flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, in the embodiment of the present invention, a rock drilling mechanism capable of ensuring integrity of a soil sample includes a supporting plate 1, three fixing plates 2 uniformly distributed are disposed at sides of the supporting plate 1, fixing rods 3 are fixedly connected to the fixing plates 2, the bottoms of the fixing rods 3 are fixedly connected to the fixing rods 3 in an inclined distribution, bottom plates 4 horizontally distributed are fixedly connected to the bottoms of the fixing rods 3, the bottom plates 4 are used for being fixedly connected to the ground, a fixing frame 7 is disposed at a middle portion of an upper surface of the supporting plate 1, a first motor frame 9 is disposed at a top end of the fixing frame 7, a first motor 8 is fixedly mounted at the bottom of the first motor frame 9, a shaft portion of the first motor 8 is connected to a screw rod 10, the screw rod 10 is rotatably connected to the fixing frame 7 through a bearing, a bottom of the screw rod 10 extends into the fixing frame 7, and a threaded sleeve 11 is threadedly connected to the screw rod 10, the bottom of the threaded sleeve 11 is fixedly connected with a sliding barrel 12 which is connected with the screw rod 10 in a vertical sliding manner, the bottom of the sliding barrel 12 is fixedly connected with a second motor frame 13, a limiting mechanism is arranged between the two sides of the second motor frame 13 and the threaded sleeve 11 and the fixed frame 7, a second motor 14 is fixedly arranged at the bottom of the second motor frame 13, the shaft part of the second motor 14 is connected with a connecting shaft 15, the bottom of the connecting shaft 15 is connected with a detachable drilling tool 16, the bottom of the drilling tool 16 penetrates through the middle part of the supporting plate 1 and extends to the lower part of the supporting plate 1, and a limiting sleeve 19 is arranged at the middle part of the bottom of the supporting plate 1, the drilling tool 16 is connected with the limiting sleeve 19 in a sliding way, a water tank 17 is arranged on one side of the upper surface of the supporting plate 1, the water tank 17 is connected with a water pipe 18 through a water pump, the end of the water pipe 18 is connected with a spray head which is positioned below the limiting sleeve 19.

The supporting plate 1 is of a circular structure, and the fixing plates 2 are circumferentially distributed on the lateral sides of the supporting plate 1 in an array manner.

Through the distribution of fixed plate 2 for dead lever 3 is triangular distribution, thereby makes layer board 1 more firm, is favorable to the stability of device.

The bottom of bottom plate 4 is provided with evenly distributed's staple 5, just the surface of bottom plate 4 is provided with the slide opening, sliding connection has fixed inserted bar 6 in the slide opening, just the bottom of fixed inserted bar 6 sets up to most advanced structure.

Through the setting between staple 5 and the fixed inserted bar 6 for bottom plate 4 is firm more and ground contact, makes in drilling process, and the phenomenon that the device can not take place to rock.

Stop gear includes gag lever post 20, gag lever post 20 is provided with two, two gag lever post 20 parallel distribution is in the both sides of slide cartridge 12, just gag lever post 20 is fixed in mount 7, the both sides of thread bush 11 and second motor frame 13 all are provided with slider 21, slider 21 and gag lever post 20 sliding connection.

Through the cooperation between gag lever post 20 and the slider 21, played the limiting displacement to thread bush 11 and slide cartridge 12, make it more firm in the removal process.

Buffer springs 22 are sleeved at the upper end and the lower end of the limiting rod 20, and buffer pads made of rubber materials are arranged at the two ends of each buffer spring 22.

Through the arrangement of the buffer spring 22, when the threaded sleeve 11 and the second motor frame 13 move to the top or the bottom, a certain buffer effect can be achieved, and the damage of the device caused by hard collision is prevented.

The fixing frame 7 is of a U-shaped structure, and the fixing frame 7 is fixedly connected with the supporting plate 1 through welding.

Through the arrangement of the U-shaped structure of the fixing frame 7, the drilling tool 16 is convenient to mount and dismount.

The drilling tool 16 comprises a first drilling rod 23 and a second drilling rod 24, the first drilling rod 23 and the second drilling rod 24 are both hollow semi-cylindrical structures with openings at two ends, semi-cylindrical connecting rods 25 and drill bits 28 are respectively arranged at the top ends and the bottom parts of the first drilling rod 23 and the second drilling rod 24, fixing lugs are respectively arranged at the corners of the periphery of the first drilling rod 23 and the second drilling rod 24, every two opposite fixing lugs are fixedly connected through a screw, lining pipes 29 are arranged in the inner cavities of the first drilling rod 23 and the second drilling rod 24, and the outer diameters of the lining pipes 29 are matched with the inner diameters of the first drilling rod 23 and the second drilling rod 24.

Through the cooperation of first drilling rod 23 and second drilling rod 24, be convenient for install and dismantle interior bushing pipe 29, and the soil core of being convenient for is collected at interior bushing pipe 29 inner chamber to the phenomenon that is difficult to observe, the analysis the bottom layer because of destroying the soil core when prizing out the soil core on the drilling tool can not take place, and interior bushing pipe 29 is very convenient to the save, the transportation of obtaining the sample.

The connection parts of the inner walls of the first drill rod 23 and the second drill rod 24 and the drill bit 28 are provided with a stop block 30, the distance from the upper surface of the stop block 30 to the bottom of the connecting rod 25 is equal to the length of the lining pipe 29, clamping grooves are formed in two side edges of the first drill rod 23, limiting edges 31 are correspondingly arranged on two side edges of the second drill rod 24 and the clamping grooves, and the size of each limiting edge 31 is matched with that of each clamping groove.

The first drill rod 23 and the second drill rod 24 are connected conveniently through the arrangement between the limiting edge 31 and the clamping groove.

One side of connecting rod 25 is provided with stopper 26, the outside of connecting rod 25 is provided with first ring flange 27, first ring flange 27 is located stopper 26's bottom, connecting axle 15 is bottom open-ended hollow structure, the internal diameter of connecting axle 15 is identical with the external diameter of connecting rod 25, just the inner wall of connecting axle 15 corresponds with stopper 26 and is provided with spacing groove 32, stopper 26's size is identical with spacing groove 32's size, just the bottom outside of connecting axle 15 is provided with the second ring flange 33 that corresponds the distribution with first ring flange 27, pass through bolt fixed connection between first ring flange 27 and the second ring flange 33.

Through the cooperation between stopper 26 and the spacing groove 32, be convenient for be connected between connecting rod 25 and the connecting axle 15, and spacing connecting rod 25, can effectively prevent to rotate the gliding phenomenon of in-process connecting rod 25 and take place.

The invention also discloses a using method of the rock-soil drilling mechanism capable of ensuring the integrity of the soil sample, which comprises the following steps:

s101: firstly, moving the device to a place needing drilling, driving a fixing nail 5 at the bottom of a bottom plate 4 into the ground for fixing, and then driving a fixing inserted bar 6 into the ground;

s201: placing the lining tube 29 into the cavity between the first drill rod 23 and the second drill rod 24, and then combining the first drill rod 23 and the second drill rod 24 together to form the complete drilling tool 16;

s301: the limiting blocks 26 on the side walls of the connecting rods 25 are aligned with the limiting grooves 32 on the inner wall of the connecting shaft 15 and inserted into the limiting grooves, and the first flange plate 27 and the second flange plate 33 are fixed through bolts, so that the drilling tool 16 is mounted;

s401: starting the first motor 8 and the second motor 14, rotating the screw rod 10 to push the second motor frame 13 to move downwards, simultaneously rotating the drilling tool 16 to drill holes, and starting the water pump to enable the spray head to spray water to cool the surface of the drilling tool 16;

s501: after drilling is completed, the drilling tool 16 is moved to the position above the ground through the first motor 8, the drilling tool 16 is taken down, then the first drilling rod 23 is separated from the second drilling rod 24, the lining pipe 29 is taken out, the soil core is filled in the lining pipe 29, the soil core can be completely preserved for a long time by sleeving a rubber plug at the two ends of the lining pipe 29 and sealing wax, and the lining pipe 29 is thrown away, so that the stratum boundary and the original structure of soil can be observed conveniently.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.