CN114753791A

CN114753791A - Drilling device for geotechnical engineering investigation

Info

Publication number: CN114753791A
Application number: CN202210425051.3A
Authority: CN
Inventors: 赵晓明; 史小爽; 于洋; 赵晓鹏; 黄萌; 吴悔
Original assignee: Xuchang University
Current assignee: Xuchang University
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-15

Abstract

The invention relates to the technical field of geotechnical drilling sampling equipment, in particular to a drilling device for geotechnical engineering investigation, which comprises a mounting frame, wherein a sliding body capable of moving up and down is arranged on the mounting frame, the front end of the sliding body is rotatably connected with a connecting body, the lower side of the connecting body is slidably connected with an outer cylinder, a plurality of shock rods capable of sliding up and down in a connecting hole are arranged on the connecting body, an inner cylinder in the vertical axial direction is arranged inside the connecting body, a drill bit is arranged at the lower end of the outer cylinder, a connecting mechanism is arranged at the upper end of the connecting body, a drilling driving mechanism is detachably connected at the upper end of the connecting mechanism, a sampling driving mechanism is detachably connected at the upper end of the connecting mechanism, and one of the drilling driving mechanism and the sampling driving mechanism is arranged at the upper end of the connecting cylinder. Not easy to damage and has wide application prospect in the technical field of rock drilling sampling.

Description

Drilling device for geotechnical engineering investigation

Technical Field

The invention relates to the technical field of geotechnical drilling sampling equipment, in particular to a drilling device for geotechnical engineering investigation.

Background

The geotechnical engineering investigation refers to finding out, analyzing and evaluating geological and environmental characteristics and geotechnical engineering conditions of a construction site and compiling investigation file activities according to requirements of construction engineering, and aims to apply testing means and methods to carry out investigation research and analysis judgment on the construction site and research and build geological conditions of various engineering buildings and influence of construction on natural geological environment.

When carrying out geotechnical engineering investigation, the geotechnical engineering investigation drilling sampling device is an indispensable tool, and the condition in the rock is observed by drilling and sampling the rock ore body, at present, when drilling and sampling hard rock, because the hardness of the rock is larger, the rock is required to be drilled by using a drilling cutter barrel firstly, after the rock is drilled, the rock forms a rock pillar in the drilling barrel, at the moment, the rock pillar is required to be cut off and taken out to complete sampling, the current cutting mode mostly uses a scraper or a cutter head to cut off the rock pillar, particularly, when hard rock is encountered, if the rock is cut off forcibly, the damage of the cutting head is easily caused, and simultaneously, the damage of a rock core is caused, the sampling is required again, the drilling efficiency is reduced, the maintenance cost of drilling equipment is increased, therefore, a drilling device for geotechnical engineering investigation is urgently needed, the problem that the current drilling device is inconvenient to cut off a core is solved.

Disclosure of Invention

The invention discloses a drilling device for geotechnical engineering investigation, which aims to solve the problems that when a rock core is sampled at present, a scraper or a cutter bit is mostly used for cutting the rock core in a cutting mode, and particularly when hard rock is encountered, if the rock core is forcibly cut, the cutter bit is easily damaged, and meanwhile, the rock core is damaged, so that the rock core needs to be sampled again, and the drilling efficiency is reduced and the maintenance cost of drilling equipment is increased.

The technical scheme of the invention is that the shock absorber comprises a mounting frame, wherein a sliding body capable of moving up and down is arranged on the mounting frame, the front end of the sliding body is rotatably connected with a connecting body, the lower side of the connecting body is connected with an outer cylinder in a sliding manner, a connecting block is arranged on the inner side of the connecting body, a plurality of connecting holes uniformly distributed along the circumferential direction of the connecting block are arranged on the front side of the connecting block, a plurality of shock rods capable of sliding up and down in the connecting holes are arranged on the connecting block, an inner cylinder in the vertical axial direction is arranged inside the connecting block, a guide block is fixedly connected with the outer side of the inner cylinder, the guide block is in sliding connection with the outer cylinder, a wedge-shaped bulge is arranged below each shock rod and penetrates through the guide block, a plurality of sliding holes uniformly distributed along the circumferential direction of the inner cylinder are arranged on the lower side wall of the inner cylinder, a shock head is arranged in each sliding hole, and a wedge-shaped surface capable of contacting and matching with the wedge-shaped bulge is arranged at one end of each shock head, which is far away from the inner cylinder, the lower extreme of urceolus is equipped with the drill bit, drill bit and inner tube sliding connection, the upper end of connector is equipped with coupling mechanism, coupling mechanism's upper end is dismantled and is connected with probing actuating mechanism, coupling mechanism's upper end is dismantled and is connected with sample actuating mechanism, the upper end at the connecting cylinder is installed to probing actuating mechanism and sample actuating mechanism alternative, the rear side of mounting bracket is equipped with the elevating system that can drive the slider and reciprocate.

Preferably, coupling mechanism includes collar, dwang, connecting cylinder, the fixed post of inserting, the outside dismantlement of connector is connected with the collar, the outside of collar is equipped with a plurality of dwangs, the upper end of collar is rotated and is connected with the connecting cylinder, a plurality of first fixed orificess along its circumference equipartition are seted up to the week side of connecting cylinder, the outside of connector be equipped with a plurality of with the second fixed orificess one-to-one of first fixed orificess, all be equipped with in every first fixed orifices and insert the post rather than the fixed of the second fixed orifices that corresponds.

Preferably, the drilling drive mechanism includes fixed plate, installation cover, hydraulic motor, the upper end dismantlement of connecting cylinder is connected with the fixed plate, it is connected with the installation cover to rotate on the fixed plate, installation cover and sliding body fixed connection, be equipped with hydraulic motor in the installation cover, hydraulic motor and fixed plate fixed connection.

Preferably, the sampling driving mechanism includes installation cavity, sliding cavity, pressure oil inlet, pressure oil outlet, sliding piston, piston rod, pressure spring, ejector pad that resets, the upper end of connecting cylinder is equipped with the installation cavity, be equipped with the sliding cavity in the installation cavity, the upper end in sliding cavity is equipped with the pressure oil inlet, the downside in sliding cavity is equipped with the pressure oil outlet, be equipped with gliding sliding piston from top to bottom in the sliding cavity, sliding piston's lower extreme is equipped with the piston rod, coaxial cover is equipped with the pressure spring that resets on the piston rod, the lower extreme and the sliding cavity fixed connection of pressure spring reset, the lower extreme of piston rod runs through the sliding cavity and is equipped with the ejector pad, the lower extreme of ejector pad can be connected with the upper end contact of shaking the pole, installation cavity and slider fixed connection.

Preferably, elevating system includes lift, guide bar, the lift of direction about the rear side fixedly connected with of mounting bracket, the front end of lift is equipped with the guide bar, guide bar and mounting bracket fixed connection, the slider can slide from top to bottom along the guide bar, the output and the slider fixed connection of lift.

Preferably, the lower end of each vibration rod is provided with a first pressure spring in the vertical axial direction, the other end of each first pressure spring is fixedly connected with the connecting block, one end, away from the inner cylinder, of each vibration head is provided with a second pressure spring, and the other end of each second pressure spring is fixedly connected with the inner cylinder.

Preferably, the through-hole that link up from top to bottom is seted up at the middle part of drill bit, the internal diameter of through-hole slightly is lighter than the internal diameter of inner tube, the lower extreme of drill bit is equipped with a plurality of probing tool bits, a plurality of cutting tool bits of its circumference equipartition of edge are seted up to the week side of drill bit, helical bulge is seted up in the outside of urceolus.

Preferably, an infusion cavity is formed in the drill bit, a plurality of infusion holes which are uniformly distributed along the circumferential direction of the drill bit and communicated with the outside are formed in the lower end of the drill bit, and an infusion pipeline is arranged at the upper end of the infusion cavity.

Preferably, a plurality of fixing support legs are fixedly connected to the lower side of the mounting frame.

The technical scheme of the invention can achieve the following beneficial effects: (1) the rock drilling device is characterized in that a vibration rod and a vibration head are arranged, after a rock pillar is formed in the inner barrel, the vibration rod is driven to vibrate up and down through the sampling driving mechanism, the vibration rod drives the vibration head to vibrate and impact the rock pillar, so that the rock pillar is broken, the rock pillar is convenient to take out, the drilling and sampling efficiency of the rock pillar is improved, meanwhile, the rock with high hardness can be sampled through the vibration impact of the vibration head on the rock pillar, and the service life and the applicability of the drilling device are improved; (2) the lifting mechanism is arranged, the drilling sampling mechanism is driven to descend through the lifting mechanism, so that rock soil is drilled downwards, the formation of a rock pillar sample is facilitated, and meanwhile, the broken rock pillar is driven to be lifted through the ascending process of the lifting mechanism, so that the sample is facilitated to be taken out; (3) the connecting mechanism is arranged, so that the drilling driving mechanism and the sampling driving mechanism can be switched and installed rapidly through the connecting mechanism, the efficiency of the drilling and sampling process can be improved, the operation is convenient, and the use of operators is facilitated; (4) the infusion cavity and the infusion pipeline are arranged, and cooling liquid is supplied to the infusion cavity through the infusion pipeline, so that the drill bit is cooled, and the drilling process is convenient to carry out; the technical scheme of the invention has wide application prospect in the technical field of rock and soil drilling sampling equipment.

Drawings

FIG. 1 is an isometric view of the present invention with a sampling drive mechanism installed.

FIG. 2 is a front view of the present invention with the sample drive mechanism installed.

Fig. 3 is a bottom view of the present invention with the sample drive mechanism installed.

FIG. 4 is a top view of the present invention with the sample drive mechanism installed.

FIG. 5 is a top full sectional view of the present invention with the sample drive mechanism installed.

Figure 6 is a front elevational, fully sectioned isometric view of the present invention with the drill drive mechanism installed.

FIG. 7 is a front elevational, fully cross-sectional, perspective view of the present invention with the sample drive mechanism installed.

FIG. 8 is a left side elevational, fully sectioned isometric view of the present invention with the sample drive mechanism installed.

Figure 9 is a rear full section isometric view of the present invention with the drill drive mechanism installed.

Fig. 10 is a partial enlarged view of a in fig. 3 according to the present invention.

FIG. 11 is a partial enlarged view of B in FIG. 6 according to the present invention.

Fig. 12 is a partial enlarged view of C in fig. 7 according to the present invention.

Fig. 13 is a partial enlarged view of D in fig. 8 according to the present invention.

FIG. 14 is a partial enlarged view of E in FIG. 9 according to the present invention.

The device comprises a mounting frame 1, a mounting frame 2, a sliding body 3, a connecting body 4, an outer cylinder 5, a connecting block 6, a vibrating rod 7, an inner cylinder 8, a guide block 9, a sliding hole 10, a vibrating head 11, a drill bit 12, a mounting ring 13, a rotating rod 14, a connecting cylinder 15, a fixing insert column 16, a fixing plate 17, a mounting cover 18, a hydraulic motor 19, a mounting cavity 20, a sliding cavity 21, a pressure oil inlet 22, a pressure oil outlet 23, a sliding piston 24, a piston rod 25, a reset pressure spring 26, a pushing block 27, a lifter 28, a guide rod 29, a first pressure spring 30, a second pressure spring 31, a drilling bit 32, a cutting bit 33, a bulge 34, an infusion cavity 35, an infusion hole 36, an infusion pipeline 37 and a fixing support foot.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance in the description of the present invention, it being understood that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

The drilling apparatus for geotechnical engineering investigation shown in fig. 1-14 comprises a mounting frame 1, a sliding body 2 capable of moving up and down is arranged on the mounting frame 1, a lifting mechanism capable of driving the sliding body 2 to move up and down is arranged at the rear side of the mounting frame 1, the lifting mechanism comprises a lifter 27 and a guide rod 28, the rear side of the mounting frame 1 is fixedly connected with the lifter 27 in the up-and-down direction, the lifter 27 is a prior art and is used for driving the sliding body 2 to slide up and down along the guide rod 28, the internal mechanism is not shown in the figure, the front end of the lifter 27 is fixedly connected with a guide rod 28, the guide rod 28 is in the vertical axial direction, the guide rod 28 is fixedly connected with the mounting rack 1, the sliding body 2 can slide up and down along the guide rod 28, the output end of the lifter 27 is fixedly connected with the sliding body 2, the lifter 27 drives the sliding body 2 to move up and down, and a plurality of fixed support legs 37 are fixedly connected to the lower side of the mounting rack 1;

in this embodiment, the stroke of the lifter 27 is a height at which the sliding body 2 can be lifted up and down, and the lifter 27 can be a hydraulic lifter 27 for driving the sliding body 2 to slide up and down along the guide rod 28, so as to guide the sliding of the sliding body 2 through the guide rod 28. Be favorable to the even running of slider 2, through the upper and lower slip of slider 2, drive connector 3 and take place to slide, and then be favorable to going on of probing sample process, through fixed stabilizer blade 37, be convenient for fix mounting bracket 1 and lift 27.

As shown in the figure 1-figure 14, the drilling device for geotechnical engineering investigation, the front end of the sliding body 2 is rotatably connected with a connecting body 3, the lower side of the connecting body 3 is slidably connected with an outer cylinder 4, the inner side of the connecting body 3 is fixedly connected with a connecting block 5, the front side of the connecting block 5 is provided with a plurality of connecting holes which are uniformly distributed along the circumferential direction, the connecting block 5 is provided with a plurality of vibrating rods 6 which can slide up and down in the connecting holes, the inner cylinder 7 which is axial up and down is arranged in the connecting block 5, the outer side of the inner cylinder 7 is fixedly connected with a guide block 8, the guide block 8 is slidably connected with the outer cylinder 4, the lower part of each vibrating rod 6 is penetrated through the guide block 8 and is provided with a wedge-shaped bulge, the lower side wall of the inner cylinder 7 is provided with a plurality of sliding holes 9 which are uniformly distributed along the circumferential direction, the inner part of each sliding hole 9 is slidably connected with a vibrating head 10, one end of each vibrating head 10, which is far away from the inner cylinder 7, is provided with a wedge-shaped surface which can be contacted and matched with the wedge-shaped bulge, the lower end of each shock rod 6 is fixedly connected with a first pressure spring 29 in the vertical axial direction, the first pressure spring 29 is sleeved on the shock rod 6, the other end of each first pressure spring 29 is fixedly connected with the connecting block 5, one end, far away from the inner cylinder 7, of each shock head 10 is fixedly connected with a second pressure spring 30, the other end of each second pressure spring 30 is fixedly connected with the inner cylinder 7, the position of the first shock rod 6 can be reset conveniently through the first pressure spring 29, and the position of the shock head 10 can be reset conveniently through the second pressure spring 30;

In this embodiment, the connection body 3 is a circular tube, a limiting protrusion is disposed on a lower side of the connection body 3, an outer side wall of the outer tube 4 contacts with an inner wall of the connection body 3 and keeps sliding connection, and meanwhile, the position of the outer tube 4 is limited by the limiting protrusion, the connection body 3 drives the outer tube 4 to move downwards when moving downwards, so as to apply pressure to the outer tube 4, so that the outer tube 4 keeps pressure on and drills the rock, the connection holes are disposed on a front side of the connection block 5, and are beneficial to transmitting power to the connection block 5 and further to the inner tube 7 when the connection body 3 rotates, and meanwhile, by arranging a plurality of connection holes on the connection block 5, the vertical sliding of the shock rod 6 is facilitated to be guided, so that the shock rod 6 drives the shock head 10 to slide, and when the shock head 10 slides, the rock pillar in the inner tube 7 is shocked and vibrated, thereby shake absolutely with the pillar, set up guide block 8, the inboard and inner tube 7 fixed connection of guide block 8, the outside and the urceolus 4 sliding connection of guide block 8, through guide block 8, be favorable to making transmission power between inner tube 7 and the urceolus 4, be favorable to boring the rock and get, be provided with a plurality of guiding holes that link up from top to bottom on the guide block 8 simultaneously, guiding hole and connecting hole one-to-one and wait big, can further lead for the slip of shake rod 6, one side that every shake head 10 is close to inner tube 7 sets up to alloy vibrations head, break it through the impact of alloy vibrations head to the pillar, the other end of shake head 10 sets up to the wedge face, shake rod 6 when the downstream, the protruding wedge face contact with shake head 10 of wedge of shake rod 6 and promotion shake head 10 impact the pillar.

As shown in fig. 1-14, in the drilling apparatus for geotechnical engineering investigation, a drill bit 11 is detachably connected to the lower end of an outer cylinder 4, the drill bit 11 is slidably connected to an inner cylinder 7, a through hole which penetrates through the drill bit 11 up and down is formed in the middle of the drill bit 11, the inner diameter of the through hole is slightly smaller than that of the inner cylinder 7, a plurality of drilling bits 31 are fixedly connected to the lower end of the drill bit 11, a plurality of cutting bits 32 uniformly distributed along the circumferential direction of the drill bit 11 are formed on the circumferential side of the drill bit 11, and a spiral protrusion 33 is formed on the outer side of the outer cylinder 4;

in this embodiment, the drilling tool bit 31 and the cutting tool bit 32 all adopt the carbide material, conveniently cut the rock, and the internal diameter that sets up the through-hole is less than the internal diameter of inner tube 7, conveniently samples the rock pillar, and the cutting tool bit 32 is cutting the rock after, and the rock material can be upwards discharged through spiral helicine arch 33 on urceolus 4, is favorable to going on of drilling process.

As shown in fig. 1-14, in the drilling apparatus for geotechnical engineering investigation, an infusion cavity 34 is formed inside a drill 11, a plurality of infusion holes 35 uniformly distributed along the circumferential direction of the drill 11 and communicated with the outside are formed at the lower end of the drill 11, and an infusion pipeline 36 is communicated with the upper end of the infusion cavity 34;

in this embodiment, the infusion hole 35 is located between two adjacent drilling bits 31, and is used for injecting the cooling liquid to the drill 11, and the pore channel of the infusion hole 35 is set to be curved, so as to change the injection direction of the cooling liquid, so that both the drilling bit 31 and the cutting bit 32 can be cooled by the cooling liquid, which is beneficial to protecting the drilling bit 31 and the cutting bit 32, improving the drilling effect and the service life thereof, and when in use, the infusion pipeline 36 can be communicated with the cooling liquid infusion device.

As shown in fig. 1-14, in the drilling device for geotechnical engineering investigation, a connecting mechanism is arranged at the upper end of a connecting body 3, the connecting mechanism includes a mounting ring 12, a rotating rod 13, a connecting cylinder 14 and a fixed inserting column 15, the mounting ring 12 is detachably connected to the outer side of the connecting body 3, a plurality of rotating rods 13 are fixedly connected to the outer side of the mounting ring 12, the upper end of the mounting ring 12 is rotatably connected with the connecting cylinder 14, a plurality of first fixing holes are uniformly distributed along the circumferential direction of the connecting cylinder 14, a plurality of second fixing holes corresponding to the first fixing holes one by one are arranged on the outer side of the connecting body 3, and a fixed inserting column 15 capable of being inserted into the corresponding second fixing hole is arranged in each first fixing hole;

in this embodiment, coupling mechanism is used for connecting body 3 and drilling actuating mechanism or sample actuating mechanism to be connected, connecting body 3 is dismantled through threaded connection with collar 12, rotate dwang 13, dwang 13 drives collar 12 and takes place to rotate, collar 12 and connecting body 3 threaded connection carry out the fixing, collar 12 drives connecting cylinder 14 and moves down simultaneously, after first fixed orifices on connecting cylinder 14 corresponds with the coincidence of the second fixed orifices on connecting body 3, will fix and insert post 15 and fix in the second fixed orifices through first fixed orifices, fixed this moment between connecting cylinder 14 and the connecting body 3.

As shown in fig. 1-14, in the drilling device for geotechnical engineering investigation, the upper end of the connecting mechanism is detachably connected with a drilling driving mechanism, the upper end of the connecting mechanism is detachably connected with a sampling driving mechanism, the drilling driving mechanism and the sampling driving mechanism are selectively installed on the upper end of the connecting cylinder 14, when the drilling process is performed, the drilling driving mechanism is connected with the connecting cylinder 14, and is fixedly connected with the sliding body 2, when the sampling process is performed, the sampling driving mechanism is connected with the connecting cylinder 14, and is fixedly connected with the sliding body 2, the concrete connection mode can be bolt connection, the drilling driving mechanism comprises a fixing plate 16, a mounting cover 17 and a hydraulic motor 18, the upper end of the connecting cylinder 14 is detachably connected with the fixing plate 16, the mounting cover 17 is rotatably connected on the fixing plate 16, and the mounting cover 17 is fixedly connected with the sliding body 2, fixedly connected with hydraulic motor 18 in the installation cover 17, hydraulic motor 18 and fixed plate 16 fixed connection, hydraulic motor 18's output and fixed plate 16 fixed connection, hydraulic motor 18 drives fixed plate 16 when rotating, and fixed plate 16 drives connecting cylinder 14 and rotates, and connecting cylinder 14 drives connecting body 3 and rotates, and then carries out the probing process.

As shown in fig. 1-14, the drilling apparatus for geotechnical engineering investigation includes a sampling driving mechanism, which includes an installation cavity 19, a sliding cavity 20, a pressure oil inlet 21, a pressure oil outlet 22, a sliding piston 23, a piston rod 24, a return compression spring 25, and a push block 26, the upper end of the connecting cylinder 14 is fixedly connected with the installation cavity 19, the installation cavity 19 is fixedly connected with the sliding body 2, the installation cavity 19 is internally provided with the sliding cavity 20, the upper end of the sliding cavity 20 is provided with the pressure oil inlet 21, the lower side of the sliding cavity 20 is provided with the pressure oil outlet 22, the sliding cavity 20 is slidably connected with the sliding piston 23 capable of sliding up and down, the lower end of the sliding piston 23 is fixedly connected with the piston rod 24, the piston rod 24 is coaxially sleeved with the return compression spring 25, the lower end of the return compression spring 25 is fixedly connected with the sliding cavity 20, the lower end of the piston rod 24 penetrates through the sliding cavity 20 and is fixedly connected with the push block 26, the lower end of the push block 26 is capable of contacting with the upper end of the vibrating rod 6, when pressure oil is injected, hydraulic pressure in the sliding cavity 20 rises and drives the sliding piston 23 to move downwards, the sliding piston 23 drives the piston rod 24 to move downwards, the piston rod 24 drives the push block 26 to move downwards, meanwhile, the reset pressure spring 25 is compressed, the push block 26 is in contact with the vibration rod 6 and drives the vibration rod 6 to move downwards, the vibration rod 6 can push the vibration head 10 to impact a rock pillar, when the sliding piston 23 moves to the lower side of the pressure oil outlet 22, pressure oil flows out through the pressure oil outlet 22, hydraulic pressure in the sliding cavity 20 is reduced at the moment, due to the action of the reset pressure spring 25, the reset pressure spring 25 drives the sliding piston 23 to move upwards, at the moment, the pressure oil is continuously injected, the sliding piston 23 reciprocates in the sliding cavity 20, and at the moment, the vibration rod 6 reciprocates up and down.

The working principle of the device is as follows: when the device is used, firstly, drilling is carried out on rocks, a drilling driving mechanism is connected with a connecting cylinder 14, a hydraulic motor 18 is started, the hydraulic motor 18 drives a fixing plate 16 to rotate, the fixing plate 16 drives the connecting cylinder 14 to rotate, the connecting cylinder 14 drives a connecting body 3 to rotate, the connecting body 3 drives a connecting block 5 and an outer cylinder 4 to rotate, the outer cylinder 4 drives a drill bit 11 to rotate, the drill bit 11 drives a drilling tool bit 31 and a cutting tool bit 32 to rotate, cooling liquid is injected into an infusion pipeline 36 at the moment, a lifter 27 is simultaneously started, the lifter 27 drives a sliding body 2 to move downwards, the sliding body 2 drives the connecting body 3 to move downwards, the connecting body 3 drives the outer cylinder 4 and the connecting block 5 to move downwards, the connecting body 3 drives an inner cylinder 7 to move downwards, the outer cylinder 4 drives the drill bit 11 to move downwards and drill the rocks, at the rock pillars cut by the drill bit 11 are formed and enter the inner cylinder 7 through holes, when drilling to a proper position, sampling is carried out on a rock pillar at the moment, a drilling driving mechanism, a connecting cylinder 14 and a sliding body 2 are disassembled, the sampling driving mechanism, the connecting cylinder 14 and the sliding body 2 are installed and connected, pressure oil is injected into a pressure oil inlet 21 at the moment, hydraulic pressure in a sliding cavity 20 is increased and drives a sliding piston 23 to move downwards, the sliding piston 23 drives a piston rod 24 to move downwards, the piston rod 24 drives a push block 26 to move downwards, a reset pressure spring 25 is compressed at the same time, the push block 26 is in contact with a vibration rod 6 and drives the vibration rod 6 to move downwards, the vibration rod 6 can push a vibration head 10 to impact the rock pillar at the moment, when the sliding piston 23 moves to the lower side of a pressure oil outlet 22, the pressure oil flows out through the pressure oil outlet 22, the hydraulic pressure in the sliding cavity 20 is reduced at the moment, the reset pressure spring 25 drives the sliding piston 23 to move upwards due to the action of the reset pressure spring 25, at this moment, pressure oil is continuously injected, the sliding piston 23 reciprocates in the sliding cavity 20, the vibrating rod 6 reciprocates and repeatedly impacts the rock pillar, after the rock pillar is broken, the sliding piston 23 slides to the upper side close to the pressure oil outlet 22, the vibrating head 10 slides to the inside of the inner cylinder 7 and is positioned between the broken parts of the rock pillar, at this moment, the pressure oil infusion is stopped, the lifting machine 27 is started, the sliding body 2 moves upwards, the sliding body 2 drives the connecting body 3 to move upwards, the connecting body 3 drives the connecting block 5 to move upwards, the connecting block 5 drives the inner cylinder 7 to move upwards, the inner cylinder 7 drives the vibrating head 10 to move upwards, the vibrating head 10 drives the rock pillar to move out of the outer cylinder 4, and at this moment, the rock pillar in the inner cylinder 7 can be collected.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. The drilling device for geotechnical engineering investigation comprises a mounting rack (1) and is characterized in that a sliding body (2) capable of moving up and down is arranged on the mounting rack (1), a connecting body (3) is rotatably connected to the front end of the sliding body (2), an outer barrel (4) is slidably connected to the lower side of the connecting body (3), a connecting block (5) is arranged on the inner side of the connecting body (3), a plurality of connecting holes are formed in the front side of the connecting block (5) and evenly distributed along the circumferential direction of the connecting hole, a plurality of vibrating rods (6) capable of sliding up and down in the connecting holes are arranged on the connecting block (5), an inner barrel (7) in the vertical axial direction is arranged inside the connecting block (5), a guide block (8) is fixedly connected to the outer side of the inner barrel (7), the guide block (8) is slidably connected with the outer barrel (4), and a wedge-shaped bulge is formed below each vibrating rod (6) in a penetrating through the guide block (8), set up a plurality of slide opening (9) along its circumference equipartition, every on the lower lateral wall of inner tube (7) all be equipped with in slide opening (9) shake head (10), every shake head (10) and keep away from the one end of inner tube (7) and all open and be established to the wedge face that can with the protruding contact complex of wedge, the lower extreme of urceolus (4) is equipped with drill bit (11), drill bit (11) and inner tube (7) sliding connection, the upper end of connector (3) is equipped with coupling mechanism, coupling mechanism's upper end is dismantled and is connected with probing actuating mechanism, coupling mechanism's upper end is dismantled and is connected with sample actuating mechanism, probing actuating mechanism and sample actuating mechanism alternative install the upper end in connecting cylinder (14), the rear side of mounting bracket (1) is equipped with the elevating system that can drive slider (2) and reciprocate.

2. The drilling device for geotechnical engineering investigation according to claim 1, wherein the connecting mechanism includes a mounting ring (12), a rotating rod (13), a connecting cylinder (14) and fixed inserting columns (15), the mounting ring (12) is detachably connected to the outer side of the connecting body (3), a plurality of rotating rods (13) are arranged on the outer side of the mounting ring (12), the connecting cylinder (14) is rotatably connected to the upper end of the mounting ring (12), a plurality of first fixing holes uniformly distributed along the circumferential direction of the connecting cylinder (14) are formed in the circumferential side of the connecting cylinder, a plurality of second fixing holes corresponding to the first fixing holes one by one are formed in the outer side of the connecting body (3), and each first fixing hole is internally provided with a fixed inserting column (15) which can be inserted into the corresponding second fixing hole.

3. The drilling device for the geotechnical engineering investigation according to claim 1, wherein the drilling driving mechanism comprises a fixing plate (16), a mounting cover (17) and a hydraulic motor (18), the fixing plate (16) is detachably connected to the upper end of the connecting cylinder (14), the mounting cover (17) is rotatably connected to the fixing plate (16), the mounting cover (17) is fixedly connected with the sliding body (2), the hydraulic motor (18) is arranged in the mounting cover (17), and the hydraulic motor (18) is fixedly connected with the fixing plate (16).

4. The drilling device for geotechnical engineering investigation according to claim 1, wherein the sampling driving mechanism comprises an installation cavity (19), a sliding cavity (20), a pressure oil inlet (21), a pressure oil outlet (22), a sliding piston (23), a piston rod (24), a return compression spring (25) and a push block (26), the installation cavity (19) is arranged at the upper end of the connecting cylinder (14), the sliding cavity (20) is arranged in the installation cavity (19), the pressure oil inlet (21) is arranged at the upper end of the sliding cavity (20), the pressure oil outlet (22) is arranged at the lower side of the sliding cavity (20), the sliding piston (23) capable of sliding up and down is arranged in the sliding cavity (20), the piston rod (24) is arranged at the lower end of the sliding piston (23), the return compression spring (25) is coaxially sleeved on the piston rod (24), and the lower end of the return compression spring (25) is fixedly connected with the sliding cavity (20), the lower end of the piston rod (24) penetrates through the sliding cavity (20) and is provided with a push block (26), the lower end of the push block (26) can be in contact connection with the upper end of the vibration rod (6), and the installation cavity (19) is fixedly connected with the sliding body (2).

5. The drilling apparatus for geotechnical engineering investigation according to claim 1, wherein the lifting mechanism comprises an elevator (27) and a guide rod (28), the elevator (27) is vertically fixedly connected to the rear side of the mounting bracket (1), the guide rod (28) is arranged at the front end of the elevator (27), the guide rod (28) is fixedly connected to the mounting bracket (1), the sliding body (2) can slide up and down along the guide rod (28), and the output end of the elevator (27) is fixedly connected to the sliding body (2).

6. The drilling device for geotechnical engineering investigation according to claim 1, wherein a first compression spring (29) in an up-and-down axial direction is arranged at the lower end of each shock rod (6), the other end of each first compression spring (29) is fixedly connected with the connecting block (5), a second compression spring (30) is arranged at one end, away from the inner cylinder (7), of each shock head (10), and the other end of each second compression spring (30) is fixedly connected with the inner cylinder (7).

7. The drilling device for geotechnical engineering investigation according to claim 1, wherein a through hole is formed in the middle of the drill bit (11) and penetrates vertically, the inner diameter of the through hole is slightly smaller than that of the inner cylinder (7), a plurality of drilling bits (31) are arranged at the lower end of the drill bit (11), a plurality of cutting bits (32) are uniformly distributed along the circumferential direction of the drill bit (11) in the circumferential direction, and a spiral protrusion (33) is formed in the outer side of the outer cylinder (4).

8. The drilling device for geotechnical engineering investigation according to claim 1, wherein an infusion cavity (34) is formed inside the drill bit (11), a plurality of infusion holes (35) evenly distributed along the circumference of the drill bit (11) and communicated with the outside are formed in the lower end of the drill bit, and an infusion pipeline (36) is arranged at the upper end of the infusion cavity (34).

9. Drilling device for geotechnical engineering investigation according to claim 1, characterized in that a plurality of fixing feet (37) are fixedly connected to the underside of said mounting frame (1).