Drilling tool deviation preventing device for coring drill
By combining the use of frozen soil layers and anti-deviation structures, the problem of drilling tool deviation in hard strata was solved, improving the verticality and accuracy of the borehole and ensuring the quality of drilled samples.
Patent Information
- Application Number
- CN202520157959.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-23
AI Technical Summary
During the drilling process, the drill rod rubs against the inner wall of the borehole, causing the borehole to enlarge. This is especially true in hard formations, where the drill bit deviates and the borehole becomes skewed, affecting the drilling quality and accuracy.
Frozen soil layers are used to improve soil stability, and anti-deviation structures are used to provide elastic buffering and limiting support for the drill rod. By combining positioning insert components, freezing reinforcement components, and anti-deviation components, dual-dimensional constraints on the drill bit are achieved.
It improves the verticality and accuracy of drilling, ensures the quality of drill samples, and enhances the stability and guidance precision of drilling.
Smart Images
Figure CN223608483U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to drilling auxiliary equipment technical field especially relates to a core drill adopts drilling tool anti -run -off deviation device. BACKGROUND
[0002] Geological exploration refers to through various means, method to geological exploration, detect, determine suitable bearing stratum, according to the bearing stratum's ground bearing capacity, determine the foundation type, the investigation and research activity of the foundation parameter calculation, it is in the survey of mineral resources and found the industrial significance deposit, for the quality and quantity of mineral resources, and the technical conditions of exploitation and utilization, provide the mineral reserves and geological data needed for mine construction design, the geological condition of the investigation and research work of a certain area rock, stratum, structure, mineral resources, hydrology, landform etc. Rock and soil drilling equipment can drill in rock and soil layer and obtain underground rock or soil sample, and the rock and soil drilling equipment generally includes a drilling machine, a drilling pump, an air compressor, a power machine and a transmission device, and a drilling tower, a pipe twisting device and other accessories matched with the drilling tower, pipe twisting device and other accessories. According to the different geological conditions, impact drilling, rotary drilling or impact and rotary drilling can be selected to improve the drilling efficiency and sampling accuracy. Rock and soil drilling equipment is an important engineering technical means to obtain underground core and understand the geological information and physical properties of rock.
[0003] However, due to the friction between the drill rod and the inner wall of the drill hole during drilling, the drill hole is continuously enlarged, the size of the hole cavity is changed, the soil / rock constituting the drill hole cannot be well limited, especially the hardness of the underground rock and soil is unevenly distributed, the shaking / shaking of the drill rod during drilling is prone to cause the drill hole to expand along the direction with relatively soft texture, the shaking amplitude of the drill rod is further expanded, and the drilling quality and accuracy are affected, and the drill bit is also affected, the drilling stress is uneven, and the drill bit is prone to deviation, resulting in problems such as drill hole deviation. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a core drill adopts drilling tool anti -run -off deviation device that can improve the stability and limiting strength of soil body through frozen soil layer and utilize the limiting support of anti -deviation structure to realize the elastic buffer traction of drill rod and realize the double -dimensional constraint of drilling tool, to solve the problem that the existing drilling tool is prone to cause the drill hole to expand and deform badly, the drilling tool to tilt or deviate, the perpendicularity and accuracy of the drill hole to be affected, and the quality of the drilling sample to be poor when drilling in the stratum with unevenly distributed hardness.
[0005] The utility model discloses a coring drill adopts drilling rig anti -run -off deviation device, including the base that can set on the ground, the lower surface of base is provided with the locating column subassembly that can insert stratum and assist the position coordinate of the base on the ground is limited, the refrigeration reinforcing subassembly that can insert stratum with the mode of surrounding borehole and form the frozen soil block of surrounding borehole and the anti -migration subassembly that can insert the extension borehole and is limited to the support of the drilling rig in borehole, wherein, the refrigeration arc plate of refrigeration reinforcing subassembly is with the mode of surrounding anti -migration subassembly annular interval arrangement is installed on the lower surface of base.
[0006] According to a preferred embodiment, the refrigeration arc plate comprises a shell plate body, a heat conduction plate body, an inflow plate body and a semiconductor refrigeration sheet, wherein the heat conduction plate body is inserted in the first plate cavity of the shell plate body, the inflow plate body is also inserted in the second plate cavity of the heat conduction plate body, and the axial lower end opening of the third plate cavity of the inflow plate body is in communication with the second plate cavity; the semiconductor refrigeration sheet is also arrayed and embedded on the outer side surface of the heat conduction plate body, and the surface of the semiconductor refrigeration sheet away from the heat conduction plate body is attached to the inner cavity wall of the first plate cavity.
[0007] According to a preferred embodiment, a first limiting support partition plate is also provided on the outer side surface of the heat conduction plate body to assist in limiting the position of the heat conduction plate body in the first plate cavity; a second limiting support partition plate is also provided on the outer side surface of the inflow plate body to assist in limiting the position of the inflow plate body in the second plate cavity.
[0008] According to a preferred embodiment, the axial end of the shell plate body is also provided with a first cover body capable of plugging the cavity port of the first plate cavity; the axial end of the heat conduction plate body is also provided with a second cover body capable of plugging the cavity port of the second plate cavity.
[0009] According to a preferred embodiment, an inflow pipe capable of communicating with the third plate cavity and an outflow pipe capable of communicating with the second plate cavity are also inserted in the second cover body.
[0010] According to a preferred embodiment, the anti-migration component comprises an outer positioning pipe, a multi-directional limiting mechanism and an inner sleeve, wherein the inner sleeve is coaxially inserted in the outer positioning pipe, and a plurality of multi-directional limiting mechanisms are annularly and interval arranged on the inner wall of the outer positioning pipe, and one end of the multi-directional limiting mechanism away from the outer positioning pipe is connected to the outer wall of the inner sleeve.
[0011] According to a preferred embodiment, the elastic rubber ring capable of blocking the annular gap between the outer positioning pipe and the inner sleeve is detachably embedded on the axial upper end and the axial lower end of the outer positioning pipe.
[0012] According to a preferred embodiment, a plurality of positioning protrusions are arranged on the outer wall of the tube body of the outer positioning tube.
[0013] According to a preferred embodiment, the multi-directional limiting mechanism comprises first connecting heads, spring rods and second connecting heads, wherein a plurality of the first connecting heads are circumferentially arranged on the inner wall of the outer positioning tube, four spring rods are rotatably connected to the same first connecting head in a manner of forming a four-pyramid-shaped elastic support structure, and the ends of the spring rods away from the first connecting head are rotatably connected to different second connecting heads arranged on the outer wall of the inner sleeve.
[0014] According to a preferred embodiment, a plug-in column is arranged in the plug-in column sleeve of the positioning plug-in column assembly, and a magnetic ball and a double-cone plug are connected to the bottom end of the plug-in column, and the axial lower end of the plug-in column sleeve is further rotatably connected to an inflatable limiting arc piece capable of being deflected and expanded.
[0015] The utility model discloses the beneficial effects are:
[0016] The positioning plug-in column assembly can be limitedly inserted into the shallow soil body, and the position and connection stability in the soil body are limited by expansion and expansion, so that the base is effectively positioned and placed in the surface position of the drill hole, and the stability and connection strength of the base and the surface are ensured, the base is prevented from shaking, overturning and other problems caused by the drill, and the stability of the base is ensured. The freezing and reinforcing assembly can freeze and solidify the soil body of a certain depth range around the drill hole according to requirements, so that the structural strength and stability of the soil block are ensured, the supportability of the soil block to the base is ensured, the soil body around the drill hole can maintain a roughly equal strength, the difficulty of adverse reaming and drill rod inclination is increased, and the structural stability and hole wall rock strength of the drill hole during drilling are improved. Especially, the soil body solidified by the freezing and processing assembly can provide more effective limiting installation space for the anti-deviation assembly, prevent the anti-deviation assembly from being inclined in the limiting installation space and unable to effectively correct, buffer and limit support the drill rod. The anti-deviation assembly can effectively limit the vertical insertion of the drill rod into the stratum by constructing a four-pyramid-shaped elastic support limiting structure, especially when the drill rod shakes and deviates, the elastic support structure at different relative positions can buffer and inhibit the motion trend by compression and expansion, and the acting force is converted and reduced during the expansion and contraction deformation process, the amplitude and intensity of the shaking are efficiently attenuated, the deviation is hindered, the stability of the positioning and guiding is ensured, the perpendicularity and precision of the drilling are improved, and the quality of the rock core sample is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a preferred core drill adopts the structure diagram of the drilling tool anti-deviation device of the utility model;
[0018] Figure 2 is a preferred core drill adopts the structure diagram of the positioning plug-in column assembly of the drilling tool anti-deviation device of the utility model when the support limit;
[0019] Figure 3 is a preferred core drill adopts the structure diagram of the refrigeration reinforcing assembly of the drilling tool anti-deviation device of the utility model;
[0020] Figure 4 is a preferred core drill adopts the axial plane diagram of the refrigeration arc plate of the drilling tool anti-deviation device of the utility model;
[0021] Figure 5 is a preferred core drill adopts the plane diagram of the anti-deviation assembly of the drilling tool anti-deviation device of the utility model;
[0022] Figure 6 is a preferred core drill adopts the structure diagram of the multidirectional limit mechanism of the drilling tool anti-deviation device of the utility model.
[0023] List of reference signs
[0024] 1: base; 2: positioning plug-in column assembly; 3: refrigeration reinforcing assembly; 4: anti-deviation assembly; 21: plug-in column sleeve; 22: plug-in column; 23: magnetic ball; 24: double cone plug; 25: expansion limit arc piece; 31: installation ring plate; 32: refrigeration arc plate; 321: shell plate body; 322: heat conduction plate body; 323: inflow plate body; 324: semiconductor refrigeration piece; 325: first limit support partition plate; 326: second limit support partition plate; 3211: first plate cavity; 3212: first cover body; 3221: second plate cavity; 3222: second cover body; 3223: inflow pipe; 3224: outflow pipe; 3231: third plate cavity; 41: outer positioning pipe; 42: multidirectional limit mechanism; 43: inner sleeve; 44: elastic rubber ring; 411: positioning lug; 412: connecting screw; 421: first connecting head; 422: spring rod; 423: second connecting head. DETAILED DESCRIPTION
[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the present application will be briefly introduced with reference to the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0026] The following will be described in detail with reference to the drawings.
[0027] Embodiment 1
[0028] The application provides a core drill with a drill tool anti-deviation device, which comprises a base 1, a positioning column assembly 2, a frozen reinforcement assembly 3 and an anti-deviation assembly 4.
[0029] According to Figures 1-6In the shown specific embodiment, the base 1 is placed on the ground surface in a manner that exposes the drilling position, thereby forming a stable installation plane at the drilling position for facilitating the installation of the drilling tool. The lower surface of the base 1 is provided with a positioning column assembly 2 that can be inserted into the ground to assist in defining the position coordinates of the base 1 on the ground surface, a cold reinforcement assembly 3 that can be inserted into the ground in a manner surrounding the drilling hole to cold-reinforce the ground within a certain depth and range and form a frozen soil block surrounding the drilling hole, and an anti-deviation assembly 4 that can be inserted into the expanded drilling hole to provide position-limiting support to the drilling tool in the drilling hole. The cold reinforcement assembly 3 starts from the annular region defined thereby to spread the cold-reinforced layer to the radially inner and outer soil bodies, thereby effectively solidifying the bulk soil body that supports the base 1 and the anti-deviation assembly 4, and improving the stability and structural strength of the soil body structure. The positioning column assembly 2 is separately arranged at the four bottom corners of the base 1 and is inserted into the soil layer, thereby improving the stability of the connection between the base 1 and the ground surface. The base 1 provided by the present application provides a flat installation plane with high surface strength, thereby facilitating the installation of the part of the drilling tool on the ground surface and providing stable support thereto. The positioning column assembly 2 provided by the present application can be position-limitedly inserted into the shallow soil body and can be expanded to define the position and connection stability thereof in the soil body, thereby effectively positioning the base 1 on the ground surface at the drilling position and ensuring the stability and connection strength of the connection between the base 1 and the ground surface, thereby avoiding the shaking and overturning of the base 1 caused by the drilling tool, and thereby ensuring the stability of the base 1. The cold reinforcement assembly 3 provided by the present application can cold-solidify the soil body within a certain depth range around the drilling hole according to the requirements, thereby ensuring the structural strength and stability of the soil block, ensuring the support of the soil block to the base 1, and also enabling the soil body around the drilling hole to maintain a substantially equal strength to increase the difficulty of undesirable hole expansion and drill pipe inclination, thereby improving the structural stability of the drilling hole and the rock-soil strength of the hole wall during drilling. In particular, the soil body cold-solidified by the cold reinforcement assembly 3 can provide a more effective position-limiting installation space for the anti-deviation assembly 4, thereby avoiding the defects of the anti-deviation assembly 4 that cannot be effectively corrected, buffered, and position-limitedly supported to the drill pipe due to undesirable inclination in the position-limiting installation space. The anti-deviation assembly 4 provided by the present application can effectively limit the vertical insertion of the drill pipe into the ground by constructing an elastic support and position-limiting structure in the form of a four-pyramid body, and in particular, when the drill pipe shakes and deviates, the elastic support structure at different relative positions can be compressed and stretched to buffer and inhibit the movement trend, and can convert and reduce the acting force during the stretching and contracting deformation, thereby efficiently attenuating the amplitude and strength of the shaking and hindering the deviation, to ensure the stability of the positioning and guiding, improve the perpendicularity and accuracy of the drilling, and ensure the quality of the rock core sample. The cold reinforcement assembly 3 and the anti-deviation assembly 4 provided by the present application can cooperatively form a support and position-limiting structure with high stability, high structural strength, and high buffering and reducing effect, to ensure the drilling stability and guiding accuracy of the drilling tool in the drilling hole.
[0030] Preferably, the positioning column assembly 2 comprises a column sleeve 21, a column 22, a magnetic ball 23, a double cone plug 24 and an expansion limiting arc piece 25. Preferably, the column 22 is inserted into the column sleeve 21. Preferably, the bottom end of the column 22 is connected with the magnetic ball 23 and the double cone plug 24. Further preferably, the axial lower end of the column sleeve 21 is also rotationally connected with the expandable expansion limiting arc piece 25. Specifically, the plurality of circumferentially spaced expansion limiting arc pieces 25 can be magnetically attracted to the outer surface of the magnetic ball 23. Preferably, the column sleeve 21 penetrates the base 1 through the threaded connection or other assembly connection between the outer wall of the column sleeve 21 and the base 1. Specifically, the column 22 is threaded into the column sleeve 21, so that the column 22 can be relatively rotated under the drive of the external rotating disc to change its axial height relative to the column sleeve 21. Specifically, in the initial state, the expansion limiting arc piece 25 is magnetically attached to the magnetic ball 23 extending from the axial lower end of the column sleeve 21, so as to ensure that the cross section defined by the expansion limiting arc piece 25 is minimized, thereby facilitating the insertion of the positioning column assembly 2 into the stratum. When the positioning column assembly 2 is inserted into the stratum, the column 22 is rotated to rise relative to the column sleeve 21, the magnetic ball 23 is gradually moved into the column sleeve 21, and the circumferentially spaced expansion limiting arc pieces 25 are gradually opened and deflected outward by the double cone plug 24 rising, so that the expansion limiting arc piece 25 abuts against the wall surface of the stratum, the cross section defined by the expansion limiting arc piece 25 is increased, thereby achieving effective expansion limiting, so that the column sleeve 21 is stably inserted into the stratum, ensuring the stability of the connection between the column sleeve 21 and the stratum, and ensuring the stability of the base 1 on the ground surface.
[0031] Preferably, the frozen reinforcement assembly 3 comprises a mounting ring plate 31 and a refrigeration arc plate 32. Preferably, the mounting ring plate 31 is detachably embedded on the lower surface of the base 1. Preferably, a plurality of refrigeration arc plates 32 are circumferentially spaced apart on the mounting ring plate 31 in a manner surrounding the anti-deviation assembly 4, so as to define a frozen soil area around the anti-deviation assembly 4 and form a frozen soil block. The refrigeration arc plate 32 provided in the present application can surround the borehole to freeze the soil layer, thereby forming a frozen soil block to improve the structural strength and stability of the soil layer.
[0032] Preferably, the refrigeration arc plate 32 is inserted into the stratum by pre-digging the corresponding position on the ground surface. Preferably, the refrigeration arc plate 32 comprises a shell plate body 321, a heat conduction plate body 322, an inflow plate body 323, a semiconductor refrigeration piece 324, a first limiting support partition plate 325 and a second limiting support partition plate 326. Preferably, the heat conduction plate body 322 is inserted into the first plate cavity 3211 of the shell plate body 321. Preferably, the inflow plate body 323 is also inserted into the second plate cavity 3221 of the heat conduction plate body 322. Further preferably, the axial lower end opening of the third plate cavity 3231 of the inflow plate body 323 communicates with the second plate cavity 3221. Preferably, the semiconductor refrigeration piece 324 is also arrayed and embedded on the outer side of the heat conduction plate body 322. Further preferably, the semiconductor refrigeration piece 324 is attached to the inner cavity wall of the first plate cavity 3211 away from the surface of the heat conduction plate body 322, so as to realize directional heat transfer between the shell plate body 321 and the heat conduction plate body 322. Preferably, the heat absorption end of the semiconductor refrigeration piece 324 is attached to the inner side of the shell plate body 321, and the heat release end of the semiconductor refrigeration piece 324 is attached to the outer side of the heat conduction plate body 322, so as to realize directional transfer of soil heat, so that the stratum is gradually frozen to form a high-hardness frozen soil block, reduce the possibility of soil disintegration, and improve the structural stability of the soil. Preferably, the first limiting support partition plate 325 is also arranged on the outer side of the heat conduction plate body 322 to assist in limiting the position of the heat conduction plate body 322 in the first plate cavity 3211. Preferably, the second limiting support partition plate 326 is also arranged on the outer side of the inflow plate body 323 to assist in limiting the position of the inflow plate body 323 in the second plate cavity 3221. Preferably, the semiconductor refrigeration piece 324 is a thermoelectric refrigeration piece commonly used in existing frozen soil construction. The thermoelectric refrigeration piece utilizes the Peltier effect of semiconductor materials. When a direct current passes through an electric couple composed of two different semiconductor materials in series, heat can be absorbed and released at the two ends of the electric couple, respectively, so as to realize refrigeration effect immediately. This is a common soil solidification method for stratum slotting construction. The semiconductor refrigeration piece 324 provided in the present application is electrically connected with a controller and a power supply, and the working mode of the semiconductor refrigeration piece 324 is controlled by the controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, and the provision of the power supply is also known in the art. Since the present application only protects mechanical devices, the control mode and circuit connection will not be explained in detail.
[0033] Preferably, the axial end of the shell plate body 321 is further provided with a first cover 3212 capable of plugging the cavity port of the first plate cavity 3211. Preferably, the axial end of the heat conduction plate body 322 is further provided with a second cover 3222 capable of plugging the cavity port of the second plate cavity 3221. Preferably, the second cover 3222 is further inserted with an inflow pipe 3223 capable of communicating with the third plate cavity 3231 and an outflow pipe 3224 communicating with the second plate cavity 3221. Specifically, the water flow path is: the external natural water body flows into the third plate cavity 3231 from the inflow pipe 3223, and is dispersed from the lower end opening of the third plate cavity 3231 into the second plate cavity 3221 surrounding the inflow plate body 323, thereby taking away the heat of the refrigeration arc plate 32 through the heat conduction plate body 322 to reduce the temperature of the heat releasing end of the refrigeration arc plate 32, so that the heat absorbing end of the refrigeration arc plate 32 can take away the heat of the refrigeration arc plate 32 through the shell plate body 321 to cool and freeze a larger range of soil. The water flow in the second plate cavity 3221 after absorbing heat can be discharged from the outflow pipe 3224, so that the continuous flow of water can continuously and uninterruptedly take away the heat of the refrigeration arc plate 32 to ensure that the refrigeration arc plate 32 can freeze and solidify the soil in a certain range. Preferably, the shell plate body 321 and the heat conduction plate body 322 of the present application are made of copper-aluminum alloy material with heat conductivity and structural strength. Preferably, the inflow pipe 3223 is directly connected with the external water pump through the external water pipe, and the natural water body can be continuously input by the water pump, at the same time, the outflow pipe 3224 is connected with the external water pipe to continuously discharge the natural water body after absorbing heat, so as to realize the transfer of heat, and the slightly warmed water body can be directly discharged in the external environment, without mixing impurities and pollutants, and without harming the environment. Preferably, the external water pipe can be shortened or lengthened according to the needs, so as to facilitate the extraction of water body from the external natural water source and the positioning discharge of the discharged heat dissipation water body. Specifically, the external water pipe can be extended after penetrating through the base 1.
[0034] Preferably, the anti-deviation assembly 4 comprises an outer positioning tube 41, a multi-directional limiting mechanism 42, an inner sleeve 43 and an elastic rubber ring 44. Preferably, the inner sleeve 43 is coaxially inserted in the outer positioning tube 41. Further preferably, a plurality of multi-directional limiting mechanisms 42 are circumferentially spaced apart on the inner wall of the outer positioning tube 41. Further preferably, the multi-directional limiting mechanisms 42 are connected to the outer wall of the inner sleeve 43 away from one end of the outer positioning tube 41. Preferably, the outer positioning tube 41 is inserted into the expanded borehole in a manner of abutting against the inner wall of the borehole. Further preferably, the inner sleeve 43 is movably sleeved on the drill pipe of the drilling tool, thereby limiting the sway and tilt of the drill pipe. Preferably, the elastic rubber ring 44 capable of blocking the annular gap between the outer positioning tube 41 and the inner sleeve 43 is detachably embedded at the axial upper end and the axial lower end of the outer positioning tube 41. The multi-directional limiting mechanism 42 provided in the present application can buffer and convert and reduce the movement of the drill pipe through the simultaneous extension and compression of the rod structures of different support points, thereby ensuring the positioning and guiding effect of the drill pipe, improving the working stability and perpendicularity of the drill pipe, and achieving the accuracy of core drilling.
[0035] Preferably, the elastic rubber ring 44 is adjustably arranged on the outer wall of the pipe body of the outer positioning tube 41 with a plurality of positioning protrusions 411 capable of supporting the pipe body in the expanded borehole to ensure the stability and abutting effect of the insertion. Specifically, the positioning protrusions 411 are detachably inserted on the pipe body of the outer positioning tube 41 through connecting screws 412.
[0036] Preferably, the multi-directional limiting mechanism 42 comprises a first connecting head 421, a spring rod 422 and a second connecting head 423. Preferably, a plurality of first connecting heads 421 are circumferentially spaced apart on the inner wall of the outer positioning tube 41. Further preferably, four spring rods 422 are rotatably connected to the same first connecting head 421 in a manner of cooperatively constructing an elastic support structure in the shape of a four-pyramid. Further preferably, the ends of the spring rods 422 away from the first connecting head 421 are respectively rotatably connected to different second connecting heads 423 provided on the outer wall of the inner sleeve 43. Preferably, the spring rod 422 comprises a sleeve, a core rod inserted in the sleeve and a support spring sleeved outside the sleeve and the core rod, and the sleeve and the core rod are respectively provided with connecting ring plates capable of being connected to the two ends of the support spring. In use, the spring rod can stretch and contract according to the change of force, thereby offsetting and buffering the action force through the work of compression and elongation of the spring. The circumferentially spaced spring rods 422 provided in the present application can cooperatively buffer the deviating action force in multiple directions through the construction of the support structure in the shape of a four-pyramid, thereby ensuring the stability of the limiting support and the accuracy of the guiding and positioning.
[0037] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, all the technical schemes falling into the scope defined by the utility model claims are within the protection scope of the utility model. The utility model specification and its drawings should be understood as illustrative rather than limiting the claims. The protection scope of the utility model is defined by the claims and its equivalents. In the full text, the features guided by "preferably" are only optional ways, and should not be understood as necessarily setting, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.
Claims
1. A core drill with a drill tool anti-deviation device, comprising a base (1) capable of being arranged on the ground, characterized in that, a positioning column assembly (2) capable of being inserted into the stratum to assist in defining the position coordinates of the base (1) on the ground, a frozen reinforcement assembly (3) capable of being inserted into the stratum in a manner surrounding the borehole to form a frozen soil block surrounding the borehole, and an anti-deviation assembly (4) capable of being inserted into the expanded borehole to support and limit the drill tool in the borehole are arranged on the lower surface of the base (1), a plurality of refrigeration arc plates (32) of the frozen reinforcement assembly (3) are arranged in a circumferential interval on a mounting ring plate (31) in a manner surrounding the anti-deviation assembly (4), and the mounting ring plate (31) is detachably embedded on the lower surface of the base (1).
2. The core drill employing a drill tool anti-wandering device as claimed in claim 1, wherein, The refrigeration arc plate (32) comprises a shell plate body (321), a heat conduction plate body (322), an inflow plate body (323), and a semiconductor refrigeration sheet (324), wherein, the heat conduction plate body (322) is inserted into a first plate cavity (3211) of the shell plate body (321), the inflow plate body (323) is also inserted into a second plate cavity (3221) of the heat conduction plate body (322), and an axial lower end opening of a third plate cavity (3231) of the inflow plate body (323) is in communication with the second plate cavity (3221); the semiconductor refrigeration sheet (324) is also arrayed and embedded on the outer side surface of the heat conduction plate body (322), and the semiconductor refrigeration sheet (324) is attached to the inner cavity wall of the first plate cavity (3211) away from the surface of the heat conduction plate body (322).
3. The core drill employing a drill tool anti-wandering device as claimed in claim 2, wherein, A first limiting support partition plate (325) is also arranged on the outer side surface of the heat conduction plate body (322) to assist in defining the position of the heat conduction plate body (322) in the first plate cavity (3211); A second limiting support partition plate (326) is also arranged on the outer side surface of the inflow plate body (323) to assist in defining the position of the inflow plate body (323) in the second plate cavity (3221).
4. The core drill of claim 3 employing a drill tool anti-wandering device, wherein, An axial end portion of the shell plate body (321) is also provided with a first cover body (3212) capable of plugging the cavity port of the first plate cavity (3211); An axial end portion of the heat conduction plate body (322) is also provided with a second cover body (3222) capable of plugging the cavity port of the second plate cavity (3221).
5. The core drill employing a drill tool anti-wandering device as claimed in claim 4, wherein, An inflow pipe (3223) capable of communicating with the third plate cavity (3231) and an outflow pipe (3224) capable of communicating with the second plate cavity (3221) are also inserted into the second cover body (3222).
6. The core drill employing a drill tool anti-wandering device as claimed in claim 5, wherein, The anti-deviation assembly (4) comprises an outer positioning pipe (41), a multi-directional limiting mechanism (42), and an inner sleeve pipe (43), wherein, the inner sleeve pipe (43) is coaxially inserted into the outer positioning pipe (41), and a plurality of multi-directional limiting mechanisms (42) are arranged in a circumferential interval on the inner wall of the outer positioning pipe (41), and one end of the multi-directional limiting mechanism (42) away from the outer positioning pipe (41) is connected to the outer pipe wall of the inner sleeve pipe (43).
7. The core drill of claim 6 employing a drill tool anti-walk device, wherein, A plurality of elastic rubber rings (44) capable of blocking the annular gap between the outer positioning tube (41) and the inner sleeve (43) are detachably embedded on the axial upper end and the axial lower end of the outer positioning tube (41).
8. The core drill of claim 7 employing a drill tool anti-wandering device, wherein, A plurality of positioning protrusions (411) are adjustably arranged on the outer wall of the tube body of the outer positioning tube (41).
9. The core drill of claim 8 employing a drill tool anti-wandering device, wherein, The multi-directional limiting mechanism (42) comprises a first connecting head (421), a spring rod (422) and a second connecting head (423), wherein, A plurality of the first connecting heads (421) are circumferentially spaced apart and arranged on the inner wall of the outer positioning tube (41), Four spring rods (422) are rotatably connected to the same first connecting head (421) in a manner of cooperatively forming a four-pyramid-shaped elastic support structure, and the ends of the spring rods (422) away from the first connecting head (421) are respectively rotatably connected to different second connecting heads (423) arranged on the outer wall of the inner sleeve (43).
10. The core drill of claim 9 employing a drill tool anti-wandering device, wherein, The plug sleeve (21) of the positioning plug assembly (2) is inserted with a plug (22), and the bottom end of the plug (22) is connected with a magnetic ball (23) and a double-cone plug (24), The axial lower end of the plug sleeve (21) is also rotatably connected with an inflatable limiting arc piece (25) capable of being deflected and expanded.