A soil drilling equipment for groundwater exploration and sampling

Abstract

The present invention relates to the technical field of soil layer drilling, and particularly relates to a soil layer drilling device for groundwater exploration and sampling, which includes a base, a feeding mechanism, and a drilling mechanism. A deflector with an adjustable inclination angle is further provided in the discharge cavity; the feeding mechanism includes a first shaft, a second shaft, a third shaft, sprockets, chains, and a hopper; the third shaft is rotatably arranged at the lower part of the material cavity and is distributed in an isosceles triangle with the first shaft and the second shaft; the drilling mechanism includes a connecting cylinder, a delivery pipe, and a drilling member; a driving member is further provided in the connecting cylinder; the delivery pipe includes a pipe body, a planetary carrier, a delivery shaft, and delivery blades; the drilling member is configured to operate at a preset speed M1 at the drilling center and at a preset speed M2 at the drilling outer edge, and M1 > M2, and both operate in the same direction for drilling. The present invention improves the thoroughness and efficiency of transporting, cleaning, and clearing the excavated soil outward, and at the same time optimizes the structural design of the drilling part to ensure the sustainable and stable drilling operation of the drill pipe, thereby improving the efficiency of the soil layer drilling operation.

Description

Technical Field

[0001] The present invention relates to the technical field of soil layer drilling, and particularly relates to a soil layer drilling device for groundwater exploration and sampling. Background Art

[0002] During the process of groundwater exploration and sampling, drilling equipment is often required. However, traditional drilling equipment has a complex structure and poor usage effects.

[0003] Searching the publicly available prior art "CN118498880B, Drilling and Excavation Structure for Wellbore Soil Layers" records that "This invention discloses a drilling and excavation structure for wellbore soil layers, which relates to the technical field of wellbore drilling and excavation. It solves the problem that during the actual excavation of wellbore soil layers, the excavated soil, etc. will accumulate inside the excavated wellbore and is difficult to discharge, affecting the efficiency and effect of wellbore excavation. The drilling and excavation structure for wellbore soil layers includes an outer support assembly, universal wheels, a drilling position adjustment assembly, an integrated soil layer drilling mechanism, a drill bit, and an infrared distance meter. There are two groups of outer support assemblies, and multiple groups of universal wheels are installed at the bottom through screws. The top of the two groups of outer support assemblies is installed with a drilling position adjustment assembly through screws. In the present invention, during the drilling and excavation of the wellbore, the operation of lifting and emptying the excavated soil, etc. can be synchronized, so that the excavated soil, etc. will not accumulate inside the wellbore, ensuring that the excavated soil, etc. will not affect the detection operation of the infrared distance meter for the excavation depth. At the same time, it is convenient for the infrared distance meter to detect the drilling and excavation depth."

[0004] However, the above-mentioned prior art still has the following disadvantages: First, although the drilling and excavation structure of the above-mentioned prior art solves the problem of lifting and emptying the excavated soil to a certain extent, its structure is relatively simple, the exhaust fan is close to the drilling position, and the exhaust effect on the accumulated soil transported from the drilling hole is not good. Other auxiliary machinery still needs to be used for auxiliary cleaning, which is complex in operation, time-consuming and laborious. At the same time, when the exhaust fan rotates, there is also a problem that some soil may fall back into the drilling hole again, seriously restricting the efficient transportation, discharge, cleaning and cleaning operations of the excavated soil. Second, the drilling and excavation structure of the above-mentioned prior art uses a simple drill bit structure, which is difficult to adapt to the drilling operation in complex sand and gravel stratum structures, and it is easy to have the situation of the drill bit being blocked or damaged. Further analysis shows that during the drilling operation in the soil layer, the drilling is smooth and fast, and the soil is extremely easy to adhere, and it is very easy to adhere to the drill pipe, resulting in a slowdown in the transportation speed of the excavated soil for drilling, and in severe cases, it will even lead to the suspension of the upward movement of the excavated soil for drilling, affecting the operation efficiency of the soil layer drilling. Therefore, we need a soil layer drilling device for groundwater exploration and sampling. Summary of the Invention

[0005] To address the drawbacks and deficiencies of the existing soil drilling and excavation structures in the prior art, the present invention provides a soil drilling device for groundwater exploration and sampling, which ensures the smooth upward movement and evacuation of the drilled soil, improves the thoroughness and efficiency of the outward transportation, cleaning, and purification of the drilled soil, and simultaneously optimizes the structural design of the drilling section to ensure the sustainable and stable drilling operation of the drill pipe, thereby enhancing the efficiency of the soil drilling operation.

[0006] The present invention adopts the following technical solutions to achieve the above objectives:

[0007] A soil drilling device for groundwater exploration and sampling includes a base, a feeding mechanism, and a drilling mechanism. The base is vertically distributed, and a discharge chamber and a material chamber are respectively provided on the left and right sides of the upper part of the base. A deflector with an adjustable inclination angle is further provided in the discharge chamber, and one end of the deflector leads to the material chamber. The feeding mechanism includes a first shaft, a second shaft, a third shaft, sprockets, chains, and a hopper. The first shaft is rotatably arranged above the material chamber and above the deflector. The second shaft is rotatably arranged in the material chamber and is at the same height as the first shaft. The third shaft is rotatably arranged at the lower part of the material chamber and is distributed in an isosceles triangle with the first shaft and the second shaft. The sprockets are all installed on the first shaft, the second shaft, and the third shaft. The chains are two and are distributed front and back, and are respectively installed on the corresponding sprockets to drive the three shafts to rotate synchronously. The hopper is connected to the chains distributed on both sides through connecting rods. An inlet hole is provided at the bottom of the material chamber. The drilling mechanism includes a connecting cylinder, a delivery pipe, and a drilling component. The connecting cylinder is vertically distributed, the top end is fixedly connected to the base and is in communication with the material chamber, and a driving component is further provided in the connecting cylinder. The delivery pipes are multiple and can be connected end to end through connectors. The lowermost delivery pipe is connected to the drilling component, and the uppermost delivery pipe is fixedly connected to the connecting cylinder. The delivery pipe includes a pipe body, a planet carrier, a delivery shaft, and delivery blades. The pipe body is vertically distributed, and there are two planet carriers which are respectively fixedly installed on the upper and lower parts of the pipe body. The delivery shaft is coaxially installed in the pipe body and is connected to the planet carrier through bearings. The delivery blades are arranged on the delivery shaft. The drilling component is configured to operate at a preset speed M1 at the drilling center and at a preset speed M2 at the drilling outer edge, and M1 > M2, and both operate in the same direction for drilling.

[0008] Preferably: The cross-section of the discharge chamber is a rectangular structure and is inclined as a whole with the left side lower and the right side higher. The front and rear ends of the deflector are connected to the side walls of the discharge chamber through rotating shafts.

[0009] Further preferably, an adjusting member is further provided between the flow guide plate and the side wall of the discharge cavity. The adjusting member includes an adjusting motor, a disc, a split shaft, and a linkage rod. The adjusting motor is mounted on the discharge cavity through a bracket. The disc is sleeved on the output shaft of the adjusting motor. The split shaft is arranged on the disc and deviates from the center of the disc. One end of the linkage rod is rotatably connected to the flow guide plate, and the other end is rotatably connected to the split shaft.

[0010] Further preferably, a main motor is also mounted on the inner wall of the material cavity through a bracket, and the main motor is connected to the first shaft. A connecting plate is provided on the chain, and the connecting rod is arranged on the connecting plates at corresponding positions of the front and rear chains. The upper end of the flow guide plate is located in the middle of the connecting line between the first shaft and the second shaft.

[0011] Preferably, the driving member includes a driving motor, a driving shaft, and a spiral blade. The driving motor is mounted on the lower end face of the base through a bracket. The driving shaft is vertically distributed and connected to the output shaft of the driving motor. The spiral blade is arranged on the driving shaft. The driving shaft is connected to the conveying shaft.

[0012] Further preferably, the connecting member includes a connecting shaft, a connecting groove, an outer edge upper support plate, and an outer edge lower support plate. The connecting shaft is arranged at the lower end of the conveying shaft, and the two are of an integrally formed structure. The connecting groove is opened at the upper end of the conveying shaft, and the connecting shaft of the conveying pipe is matched and installed with the connecting groove of the adjacent lower conveying pipe. The outer edge upper support plate is of an annular structure and is fixedly installed at the upper end of the conveying pipe by welding, and is provided with a mounting hole. The outer edge lower support plate has the same structure as the outer edge upper support plate. The outer edge lower support plate of the conveying pipe is connected and fixed to the outer edge upper support plate of the adjacent lower conveying pipe through a fastening bolt installed at the mounting hole. The outer edge lower support plate is provided at the lower end of the connecting cylinder. The lower end of the driving shaft is also provided with the connecting shaft, and the two are of an integrally formed structure.

[0013] Further preferably, the cross-section of the connecting shaft is any one of a straight shape, a star shape, and a cross shape.

[0014] Further preferably, the drilling member includes a central drill rod, an outer tooth plate, and an outer drill rod. The central drill rod is vertically distributed, and the top end is fixedly connected to the conveying shaft of the lowermost conveying pipe. A central gear is also provided on the central drill rod. The outer tooth plate is of an annular structure and is also provided with a material conveying hole. The material conveying holes are a plurality of annularly evenly distributed. A clamping plate is also provided at the outer edge of the upper end of the outer tooth plate. A clamping groove is also opened at the lower end of the lowermost conveying pipe. The clamping plate is matched and installed with the clamping groove, and the outer tooth plate and the lowermost conveying pipe can rotate relative to each other and cannot move relative to each other. A transmission tooth is also provided on the inner side wall of the outer tooth plate, and the transmission tooth is in internal meshing transmission with the central gear. The outer drill rod is arranged below the outer tooth plate. The outer side surface of the outer tooth plate is flush with the outer side surface of the conveying pipe. The length of the central drill rod is greater than the set length of the outer drill rod.

[0015] Further preferably: The outer drill pipe and the outer tooth plate are of an integrally formed structure, and the outer drill pipe is of an arc-shaped structure with the lower end concave inward, and a tip is provided at the lower end. An edge-opening part is further provided on one side of the outer drill pipe corresponding to the drilling direction; A plurality of the outer drill pipes are evenly distributed in a ring shape; Drill teeth are further provided at the bottom end of the central drill pipe, and the two are of an integrally formed structure, and the drill teeth are distributed in an inclined structure.

[0016] Preferably: The base includes a base body and a support body; The support body is of a concave structure placed laterally, and through holes are provided on the side walls, and guide rods are provided between the upper and lower side walls of the support body; The base body is movably arranged up and down on the support body, the base body passes through the guide rods, and a hydraulic cylinder is further provided between the upper end surface of the base body and the upper wall of the support body; Support legs are further provided on the lower end surface of the support body.

[0017] The beneficial effects of the present invention compared with the prior art are as follows: The structure of the present invention is reasonably designed. By setting a delivery pipe with a special structure, it not only ensures the adaptability length requirement for soil layer drilling and excavation, but also ensures the smoothness of the upward movement and evacuation of the drilled soil, avoiding the blockage problem of the material spiral conveying channel caused by soil adhesion; It further improves the thoroughness and efficiency of the outward conveying, cleaning, and cleaning of the drilled soil; Since the eccentric shaft structure driven by a traditional motor is omitted, the manufacturing process is simplified, and the dynamic balance of the structure is improved; At the same time, the structure design of the drilling part is optimized to ensure the sustainable and stable drilling operation of the drill pipe. Since the external tooth plate and the central gear are in internal meshing transmission, a differential speed matching drilling operation mode of the inner and outer drill pipes is formed, which not only increases the drilling strength of the drill pipe, ensures the stability and efficiency of the soil layer drilling operation, but also is conducive to the secondary dispersion treatment of the drilled soil, avoiding soil adhesion and improving the conveying and evacuation effect; The overall structure volume of the entire drilling part is relatively short, saving structural space, and the length can be compressed by more than 25% compared with the traditional drill pipe with the same efficiency; Compared with the ordinary drill pipe with the same power, the volume and weight can be reduced by about 30%, greatly improving the efficiency of the soil layer drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 is Figure 2 an enlarged view of part A in

[0022] Figure 4 is Figure 2 an enlarged view of part B in

[0023] Figure 5 a schematic diagram of the adjusting part of the present invention;

[0024] Figure 6 a schematic structural diagram of the material conveying mechanism of the present invention;

[0025] Figure 7 a partial structural diagram of the conveying pipe of the present invention;

[0026] Figure 8 is a structural view of the drilling part of the present invention Figure 1 ;

[0027] Figure 9 is a structural view of the drilling part of the present invention Figure 2 .

[0028] In the figure: 1, base; 11, discharge cavity; 12, material cavity; 13, deflector; 14, feed hole; 15, rotating shaft; 16, support leg; 17, base body; 18, support body; 19, through hole; 110, guide rod; 111, hydraulic cylinder; 2, material conveying mechanism; 21, first shaft; 22, second shaft; 23, third shaft; 24, sprocket; 25, chain; 26, hopper; 27, connecting rod; 28, main motor; 29, connecting plate; 3, drilling mechanism; 31, connecting cylinder; 32, conveying pipe; 33, drilling part; 4, driving part; 41, driving motor; 42, driving shaft; 43, spiral blade; 5, connecting part; 51, connecting shaft; 52, connecting groove; 53, outer edge upper support plate; 54, outer edge lower support plate; 55, mounting hole; 56, fastening bolt; 61, pipe body; 62, planetary carrier; 63, conveying shaft; 64, conveying blade; 7, adjusting part; 71, adjusting motor; 72, disc; 73, split shaft; 74, linkage rod; 81, center drill rod; 811, drill teeth; 82, external tooth plate; 83, external drill rod; 831, tip; 832, edge opening part; 84, center gear; 85, material conveying hole; 86, clamping plate; 87, clamping groove; 88, transmission teeth. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. In the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "provided with" that may appear shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, or it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0030] It should be noted that in the specific implementation manners of the present invention, the relational terms such as "first" and "second" that may appear are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms such as "include", "comprise" or any other variants thereof that may appear are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes the elements inherent in such process, method, article or device. Without further limitations, the statement "including one" and other limited elements do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0031] Example: As Figures 1 to 9As shown: A soil drilling device for groundwater exploration and sampling, including a base 1, a feeding mechanism 2, and a drilling mechanism 3. In the present invention, since the eccentric shaft structure driven by a traditional motor is omitted, the manufacturing process is simplified, and the dynamic balance of the structure is improved; at the same time, the structure design of the drilling part is optimized to ensure that the drill pipe can continuously and stably perform drilling operations. Due to the use of the internal meshing transmission of the external tooth plate 82 and the central gear 84, a differential speed matching drilling operation mode of the inner and outer drill pipes is formed, which not only increases the drilling strength of the drill pipe, but also ensures the stability and high efficiency of the soil drilling operation. Among them, the base 1 is vertically distributed, and the base 1 includes a base body 17 and a support body 18; the support body 18 is a concave structure placed laterally, and a through hole 19 is provided on the side wall. The purpose of setting the through hole 19 is not to affect the discharging operation of the discharging cavity 11. A guide rod 110 is provided between the upper and lower side walls of the support body 18; the base body 17 is movably arranged on the support body 18 up and down. The base body 17 passes through the guide rod 110, and a hydraulic cylinder 111 is further provided between the upper end surface of the base body 17 and the upper wall of the support body 18; thus arranged, the telescopic change of the hydraulic cylinder 111 will drive the base body 17 to move up and down along the guide rod 110, thereby completing the downward movement operation of drilling. A support leg 16 is further provided on the lower end surface of the support body 18. Thus arranged, it is convenient to improve the stability of the working state. In a preferred embodiment, a moving wheel with a braking function (not shown in the figure) is further provided on one side of the support leg 16 at the lower end of the base 1. The moving wheel at this place is connected with a telescopic rod to realize the lifting function, aiming to ensure the overall stability of the base 1 while improving the convenience of moving the drilling device at the outdoor sampling point.

[0032] Among them, a discharge cavity 11 and a material cavity 12 are respectively provided on the upper left and right sides of the base 1. Specifically, the discharge cavity 11 and the material cavity 12 are arranged on the left and right sides inside the base body 17. A deflector plate 13 with an adjustable inclination angle is further provided in the discharge cavity 11, and one end of the deflector plate 13 leads to the material cavity 12. The cross-section of the discharge cavity 11 is a rectangular structure, and the whole is an inclined structure with the left side lower and the right side higher; at the same time, the discharge cavity 11 remains unobstructed. The output end of the discharge cavity 11 can be connected to a conveyor belt for continuous conveying of materials, or can be connected to an aggregate box for treatment after centralized collection of soil. The purpose is to convey the drilled soil away from the drilling hole position to avoid the situation that the soil falls into the drilling hole again and improve the drilling operation efficiency. The front and rear ends of the deflector plate 13 are connected to the side wall of the discharge cavity 11 through a rotating shaft 15. Preferably, in the initial state, the inclination angle a of the deflector plate 13 is 25-45 degrees. An adjusting member 7 is further provided between the deflector plate 13 and the side wall of the discharge cavity 11. Specifically, the adjusting member 7 is arranged between the deflector plate 13 and the bottom end wall of the discharge cavity 11. Among them, the adjusting member 7 includes an adjusting motor 71, a disc 72, a split shaft 73, and a linkage rod 74. The adjusting motor 71 is fixedly installed on the bottom end surface of the discharge cavity 11 through a bracket. The disc 72 is sleeved on the output shaft of the adjusting motor 71. The split shaft 73 is arranged on the disc 72 and deviates from the center of the disc 72; that is, there is a distance between the split shaft 73 and the center of the disc 72, and the greater the distance between the two, the greater the adjustment range of the inclination angle of the deflector plate 13. One end of the linkage rod 74 is rotatably connected to the deflector plate 13, and the other end is rotatably connected to the split shaft 73. The purpose of such a setting is that although the deflector plate 13 is inclined and has a certain sustainable transmission effect during the conveyance of the drilled soil, there is also the phenomenon of soil adhesion or accumulation. Therefore, in the present invention, the adjusting member 7 is provided to intermittently adjust the inclination angle of the deflector plate 13, thereby realizing the shaking effect on the soil conveyed on the deflector plate 13 and improving the smoothness of soil conveyance. Specifically, when the adjusting motor 71 is started, it will drive the disc 72 to rotate synchronously. The rotation of the disc 72 will cause the position of the split shaft 73 to change, thereby driving the linkage rod 74 to move forward and backward. In the movement of the deflector plate 13, it presents a shaking operation with a changing inclination angle.

[0033] In this embodiment, the feeding mechanism 2 includes a first shaft 21, a second shaft 22, a third shaft 23, sprockets 24, a chain 25, and a hopper 26. The first shaft 21 is rotatably arranged above the upper part of the material chamber 12 and is located above the deflector 13; among them, the first shaft 21 is arranged at the upper left part of the material chamber 12, and a bearing is provided at the connection between the two. The second shaft 22 is rotatably arranged in the material chamber 12 and is at the same height as the first shaft 21; specifically, the second shaft 22 is arranged at the upper right part of the material chamber 12. The third shaft 23 is rotatably arranged at the lower part of the material chamber 12 and is distributed in an isosceles triangle with the first shaft 21 and the second shaft 22; the purpose of such an arrangement is to ensure the stability of the hopper 26 driving the drilled soil material for feeding operations, and at the same time facilitate subsequent automatic unloading operations. The sprockets 24 are installed on the first shaft 21, the second shaft 22, and the third shaft 23; among them, two sprockets 24 are arranged front and back on each shaft. The chains 25 are two distributed front and back and are respectively installed on the corresponding sprockets 24 to drive the three shafts to rotate synchronously. The hopper 26 is connected to the chains 25 distributed on both sides through a connecting rod 27; among them, the hopper 26 is in the shape of a shoveling hopper. Preferably, a sub-motor can also be provided on the second shaft 22 as a backup drive. Under normal conditions, the main motor 28 works normally and the sub-motor does not work. When the number of hoppers is large and multiple hoppers 26 on the chain 25 shovel a large amount of material, due to the decrease in the rotation speed of the first shaft 21, the main motor 28 and the sub-motor can be started synchronously. Further, when the main motor 28 fails abnormally, the sub-motor can also be started for conveying and driving operations.

[0034] Among them, connecting plates 29 are provided on the chain 25, and there are a plurality of connecting plates 29 evenly distributed. The connecting rod 27 is arranged on the connecting plates 29 at corresponding positions of the front and rear chains 25. One side of the hopper 26 is fixedly installed on the connecting rod 27. The upper end of the flow guide plate 13 is located in the middle of the connecting line between the first shaft 21 and the second shaft 22. Among them, the flow guide plate 13 is vertically distributed with respect to the connecting line of the first shaft 21 and the second shaft 22, and there is no interference between the flow guide plate 13 and the movement of the hopper 26. A feed hole 14 is provided at the bottom of the material chamber 12; the purpose of such a setting is to facilitate the soil dug in the lower part to be transported into the material chamber 12 under the action of the conveying structure, and then facilitate subsequent centralized treatment without affecting the sustainable drilling operation of the drilling. A main motor 28 is also installed on the inner wall of the material chamber 12 through a bracket, and the main motor 28 is connected to the first shaft 21. With such a setting, when the main motor 28 is started, it will drive the first shaft 21 to rotate synchronously. At this time, the sprocket 24 of the first shaft 21 will drive the corresponding chain 25 and the hopper 26 as a whole to rotate counterclockwise. The hopper 26 located at the lower part will shovel the dug soil material into its own space. Then, when it rotates to the corresponding horizontal position above the material chamber 12, the hopper 26 starts to automatically discharge the material onto the lower flow guide plate 13. In a preferred technical solution, an annular baffle (not shown in the figure) with an opening on one side is further provided at the upper end of the flow guide plate 13 to facilitate gathering the soil material and prevent the soil material on the flow guide plate 13 from spilling. In a preferred technical solution, a pushing member (not shown in the figure) can also be provided in the material chamber. Among them, the pushing member includes an electric hydraulic telescopic rod and a pushing plate; the electric hydraulic telescopic rod is arranged on the side wall of the material chamber, and the pushing plate is arranged at one end of the electric hydraulic telescopic rod. In the initial state, the electric hydraulic telescopic rod contracts, and the pushing plate is located on one side of the feed hole. During actual operation, the operation efficiency of the hopper 26 rotating to clean the dug soil is adjusted to be basically matched with the efficiency of the driving motor 41 driving the drill rod to drill and empty the soil material. At the same time, when the dug soil material emptied and moving upward in the feed hole 14 reaches a certain degree, the electric hydraulic telescopic rod is started to extend, and the soil material accumulated near the feed hole is pushed to a position away from the feed hole 14 under the action of the pushing plate, avoiding the phenomenon of difficult feeding caused by excessive accumulation of soil material.

[0035] In this embodiment, the drilling mechanism 3 includes a connecting cylinder 31, a conveying pipe 32, and a drilling member 33. The connecting cylinder 31 is vertically distributed, and its top end is fixedly connected to the base 1, specifically, the connecting cylinder 31 is connected to the base body 17. Moreover, the inner cavity of the connecting cylinder 31 is in communication with the material cavity 12. The purpose of such a setting is to facilitate the emptied and upwardly moving excavated soil material entering the connecting cylinder 31 to enter the material cavity 12 through the feeding hole 14. A driving member 4 is also provided inside the connecting cylinder 31; specifically, the driving member 4 includes a driving motor 41, a driving shaft 42, and a spiral blade 43. The driving motor 41 is fixedly installed on the lower end surface of the base 1 through a bracket, and the output shaft of the driving motor 41 extends downward. Preferably, a protective cover can be provided outside the driving motor 41 to prevent the adverse effects of excavated soil on the motor. The driving shaft 42 is vertically distributed and is connected to the output shaft of the driving motor 41. The spiral blade 43 is arranged on the driving shaft 42; the driving shaft 42 is connected to the conveying shaft 63 of the adjacent conveying pipe 32. The purpose of such a setting is that when the driving motor 41 is turned on, it will drive the driving shaft 42 and the spiral blade 43 to rotate, so that the excavated soil entering the connecting cylinder 31 is emptied and moves upward under the rotation of the spiral blade 43 and enters the material cavity 12, facilitating subsequent soil conveying and sampling operations.

[0036] In this embodiment, there are multiple conveying pipes 32, and they can be connected end to end through a connecting member 5 for installation. The purpose of such a setting is to meet the requirements of drilling at different depths, and the installation and disassembly are time-saving and labor-saving, and the operation is simple. Among them, the conveying pipe 32 includes a pipe body 61, a planetary frame 62, a conveying shaft 63, and a conveying blade 64. The pipe body 61 is vertically distributed, and there are two planetary frames 62, which are respectively fixedly installed in the upper and lower parts of the pipe body 61. Specifically, as Figure 7 shown, the planetary frame 62 includes a central ring located inside, an outer support ring located outside, and rib strips located between the central ring and the outer support ring. Among them, when the excavated soil moves upward and is emptied along the conveying channel of the conveying blade 64 (that is, the material channel formed by the spiral groove of the conveying blade 64), the rib strips will cut the soil material, avoiding the excavated soil being squeezed into blocks in the conveying channel, which is not conducive to the subsequent output of the soil material. The conveying shaft 63 is coaxially installed inside the pipe body 61 and is connected to the planetary frame 62 through a bearing. The conveying blade 64 is arranged on the conveying shaft 63; a material conveying channel is formed between adjacent conveying blades 64. The structure of the present invention is reasonably designed. By setting the conveying pipe 32 with a special structure, it not only ensures the adaptability length requirement for soil layer drilling and excavation, but also ensures the smoothness of the upward emptying of the excavated soil, avoids the problem of blockage of the material spiral conveying channel caused by soil adhesion and accumulation, and further improves the thoroughness and efficiency of the outward conveying, cleaning, and cleaning of the excavated soil.

[0037] Among them, the connecting member 5 includes a connecting shaft 51, a connecting groove 52, an outer edge upper support plate 53 and an outer edge lower support plate 54. The connecting shaft 51 is arranged at the lower end of the conveying shaft 63, and the two are integrally formed. The connecting groove 52 is opened at the upper end of the conveying shaft 63, and the connecting shaft 51 of the conveying pipe 32 is matched and installed with the connecting groove 52 of the adjacent lower conveying pipe 32. The purpose of such setting is to facilitate ensuring the rotation effect of the internal conveying shaft 63 when adjacent conveying pipes 32 are connected. Only one motor is provided for driving, and the structure is compact and the design is reasonable. The outer edge upper support plate 53 is of a ring structure and is fixedly installed at the upper end of the conveying pipe 32 by welding, and is provided with an installation hole 55; the outer edge lower support plate 54 has the same structure as the outer edge upper support plate 53; and the outer edge lower support plate 54 of the conveying pipe 32 is connected and fixed with the outer edge upper support plate 53 of the adjacent lower conveying pipe 32 through a fastening bolt 56 installed at the installation hole 55; the purpose of such setting is to ensure the stability of the connection between two adjacent conveying pipes 32, and at the same time, a sealing rubber pad is also provided at the connection between the two to ensure the sealing effect. The outer edge lower support plate 54 is also provided at the lower end of the connecting cylinder 31; the connecting shaft 51 is also provided at the lower end of the driving shaft 42, and the two are integrally formed. Such setting is used to connect adjacent conveying pipes 32 and ensure the stability of the overall drilling operation and material conveying operation. The lowermost conveying pipe 32 is connected to the drilling member 33, and the uppermost conveying pipe 32 is fixedly connected to the connecting cylinder 31. The cross section of the connecting shaft 51 is any one of a straight shape, a star shape, and a cross shape. In this embodiment, it is preferred that the connecting shaft 51 adopts a cross shape structure.

[0038] In this embodiment, the drilling member 33 is configured to operate at a preset speed M1 at the center of drilling and at a preset speed M2 at the outer edge of drilling, and M1 > M2, and both operate in the same direction of drilling. Preferably, the drilling member 33 includes a central drill pipe 81, an outer tooth plate 82, and an outer drill pipe 83. The central drill pipe 81 is vertically distributed, and the top end is fixedly connected to the conveying shaft 63 of the lowermost conveying pipe 32 by welding. A central gear 84 is also provided on the central drill pipe 81. The outer tooth plate 82 is of an annular structure and is sleeved outside the central drill pipe 81. A material conveying hole 85 is also provided on the outer tooth plate 82. The material conveying holes 85 are a plurality of annularly and evenly distributed. A clamping plate 86 is also provided at the outer edge of the upper end of the outer tooth plate 82. A clamping groove 87 is also opened at the lower end of the lowermost conveying pipe 32. The clamping plate 86 is matched and installed with the clamping groove 87, and the outer tooth plate 82 and the lowermost conveying pipe 32 can rotate relative to each other but cannot move relative to each other. A transmission tooth 88 is also provided on the inner side wall of the outer tooth plate 82. The transmission tooth 88 is in internal meshing transmission with the central gear 84; that is, the central gear 84 and the outer tooth plate 82 are in internal meshing transmission. The central gear 84 and the central drill pipe 81 are of an integral structure, that is, the driving motor 41 drives the driving shaft 42 - the conveying shaft 63 - the central drill pipe 81 to rotate integrally, and synchronously completes the drilling operation of the sampling point and the emptying and upward conveying operation of the excavated soil. The outer drill pipe 83 is arranged below the outer tooth plate 82; the outer side surface of the outer tooth plate 82 is flush with the outer side surface of the conveying pipe 32; the length of the central drill pipe 81 is greater than the set length of the outer drill pipe 83. The purpose of such a setting is to form a matching mode of central drilling and peripheral swirling, which greatly improves the operation efficiency of soil layer drilling.

[0039] In this embodiment, the outer drill pipe 83 and the outer tooth plate 82 are integrally formed structures. The outer drill pipe 83 has an arc-shaped structure with the lower end concave inward, and a tip 831 is provided at the lower end. A cutting edge portion 832 is further provided on one side of the outer drill pipe 83 corresponding to the drilling direction. A plurality of the outer drill pipes 83 are evenly distributed in a ring. The purpose of such a setting is that the drilling of the central drill pipe 81 serves as the main drive. At the same time, the central gear 84 on the central drill pipe 81 rotates synchronously, which will drive the rotation of the outer tooth plate 82 meshing with it. Since the two are in an internal meshing transmission mode, the outer drill pipe 83 located at the outer edge of the outer tooth plate 82 rotates at a speed lower than that of the central drill pipe 81, that is, the outer drill pipe 83 performs a circular rotational motion with the central drill pipe 81 as the center, realizing the rotary cutting motion of the outer drill pipe 83 on the outer soil layer, enhancing the drilling effect. At the same time, the arc-shaped and concave outer drill pipe 83 will also gather and push the drilled soil, accelerating the operation volume of the soil material to be emptied and transported upward. Preferably, a drill tooth 811 is further provided at the bottom end of the central drill pipe 81, and the two are integrally formed structures, and the drill tooth 811 is distributed in an inclined structure. Among them, wear-resistant and super-hard coatings are applied to both the central drill pipe 81, the drill tooth 811, and the outer drill pipe 83. Specifically, the drill tooth 811 is inclined in the direction of the drilling rotation. Such a setting of the drill tooth 811 will enhance the drilling effect and accelerate the drilling speed of the soil layer.

[0040] The present invention adopts an optimized design of the drilling part structure to ensure the sustainable, stable and efficient drilling operation of the drill pipe. Due to the internal meshing transmission of the outer tooth plate 82 and the central gear 84, an operation mode of differential speed cooperation between the inner and outer drill pipes is formed, which not only increases the drilling strength of the drill pipe, improves the service life of the drill pipe, but also ensures the stability and efficiency of the soil layer drilling operation. At the same time, with the auxiliary cooperation of the spiral conveying, the material conveying hole - rib - feed hole, it is also beneficial to the secondary dispersion treatment of the drilled soil, avoiding soil adhesion and improving the conveying and emptying effect. The overall structure volume of the drilling part 33 is relatively short, saving the structural space. Compared with the traditional drill pipe with the same efficiency, the length can be compressed by more than 25%; compared with the ordinary drill pipe with the same power, the volume and weight can be reduced by about 30%, greatly improving the efficiency of the soil layer drilling operation.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soil drilling device for groundwater exploration and sampling, characterized in that: The invention comprises a base, a feeding mechanism and a drilling mechanism, wherein the base is vertically distributed, and a discharge cavity and a material cavity are respectively arranged on the left and right sides of the upper part of the base, and a guide plate with an adjustable inclination angle is also arranged in the discharge cavity, and one end of the guide plate leads to the material cavity; the feeding mechanism comprises a first shaft, a second shaft, a third shaft, a sprocket, a chain and a hopper; the first shaft is rotatably arranged in the upper part of the material cavity and is located above the guide plate; the second shaft is rotatably arranged in the material cavity and maintains the same height as the first shaft; the third shaft is rotatably arranged in the lower part of the material cavity and is distributed in an isosceles triangle with the first shaft and the second shaft; the sprockets are installed on the first shaft, the second shaft and the third shaft; the chains are two distributed front and back and are respectively installed on corresponding sprockets to drive the three shafts to rotate synchronously; the hopper is connected to the chains distributed on both sides through a connecting rod; There is a feed hole; the drilling mechanism includes a connecting tube, a conveying pipe and a drilling piece; the connecting tube is vertically distributed, the top end is connected and fixed to the base, and is communicated with the material chamber, and a driving piece is also provided in the connecting tube; there are multiple conveying pipes, and they can be connected and installed end to end through connecting pieces; the conveying pipe at the lower end is connected to the drilling piece, and the conveying pipe at the top is fixedly connected to the connecting tube; the conveying pipe includes a pipe body, a planetary frame, a conveying shaft and conveying leaves; the pipe body is vertically distributed, and there are two planetary frames which are respectively fixedly installed on the upper and lower parts of the pipe body; the conveying shaft is coaxially installed in the pipe body, and is connected to the planetary frame through bearings; the conveying leaves are arranged on the conveying shaft; the drilling piece is configured to operate at a preset speed M1 at the drilling center and at a preset speed M2 at the drilling outer edge, and M1>M2, and the two maintain drilling operations in the same direction.

2. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 1, characterized in that: The cross section of the discharge chamber is a rectangular structure, and the overall structure is an inclined structure with the left side lower and the right side higher; the front and rear ends of the guide plate are connected to the side wall of the discharge chamber through a rotating shaft.

3. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 2, characterized in that: An adjusting member is also provided between the guide plate and the side wall of the discharge chamber, and the adjusting member includes an adjusting motor, a disc, a split shaft, and a linkage rod; the adjusting motor is installed in the discharge chamber through a bracket, the disc is sleeved and installed on the output shaft of the adjusting motor, and the split shaft is arranged on the disc and deviates from the center of the disc; one end of the linkage rod is rotatably connected to the guide plate, and the other end is rotatably connected to the split shaft.

4. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 3, characterized in that: A main motor is also installed on the inner wall of the material chamber through a bracket, and the main motor is connected to the first shaft; a connecting plate is provided on the chain, and the connecting rod is arranged on the connecting plate at corresponding positions of the front and rear chains; the upper end of the guide plate is located in the middle of the connecting line between the first shaft and the second shaft.

5. The soil layer drilling equipment for groundwater exploration and sampling as claimed in claim 1, characterized in that: The driving member includes a driving motor, a driving shaft and a spiral blade; the driving motor is installed on the lower end surface of the base through a bracket, the driving shaft is vertically distributed and connected to the output shaft of the driving motor, and the spiral blade is arranged on the driving shaft; the driving shaft remains connected to the conveying shaft.

6. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 5, characterized in that: The connecting member includes a connecting shaft, a connecting groove, an outer edge upper support plate and an outer edge lower support plate; the connecting shaft is arranged at the lower end of the conveying shaft, and the two are an integrally formed structure; the connecting groove is opened at the upper end of the conveying shaft, and keeps the connecting shaft of the conveying pipe matching and installed with the connecting groove of the adjacent lower conveying pipe; the outer edge upper support plate is an annular structure, and is fixedly installed on the upper end of the conveying pipe by welding, and is provided with a mounting hole; the outer edge lower support plate has the same structure as the outer edge upper support plate; and keeps the outer edge lower support plate of the conveying pipe connected and fixed with the outer edge upper support plate of the adjacent lower conveying pipe by fastening bolts installed at the mounting holes; the lower end of the connecting tube is provided with the outer edge lower support plate; the lower end of the driving shaft is also provided with the connecting shaft, and the two are kept integrally formed.

7. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 6, characterized in that: The cross section of the connecting shaft is any one of a straight shape, a star shape, and a cross shape.

8. The soil layer drilling equipment for groundwater exploration and sampling as claimed in claim 7, characterized in that: The drilling part includes a center drill rod, an outer tooth plate, and an outer drill rod; the center drill rod is distributed vertically, and the top end is fixedly connected to the conveying shaft of the lowest conveying pipe, and a center gear is also provided on the center drill rod; the outer tooth plate is an annular structure, and is also provided with a feeding hole, and the feeding holes are multiple and evenly distributed in an annular shape, and a clamping plate is also provided at the outer edge of the upper end of the outer tooth plate, and a clamping groove is also provided at the lower end of the lowest conveying pipe, and the clamping plate is matched and installed with the clamping groove, and the outer tooth plate and the lowest conveying pipe can rotate relative to each other but cannot move relative to each other; the inner side wall of the outer tooth plate is also provided with transmission teeth, and the transmission teeth maintain internal meshing transmission with the center gear; the outer drill rod is arranged below the outer tooth plate; the outer side surface of the outer tooth plate is kept flush with the outer side surface of the conveying pipe; the length of the center drill rod is greater than the set length of the outer drill rod.

9. A soil layer drilling device for groundwater exploration and sampling as claimed in claim 8, characterized in that: The outer drill rod and the outer tooth plate are an integrally formed structure, and the outer drill rod is an arc-shaped structure with a concave lower end and a pointed end. The outer drill rod is also provided with a cutting edge on the side corresponding to the drilling direction. The outer drill rod is a plurality of evenly distributed rings. Drill teeth are also provided at the bottom end of the center drill rod. The two are an integrally formed structure, and the drill teeth are distributed in an inclined structure.

10. The soil layer drilling equipment for groundwater exploration and sampling according to claim 1, characterized in that: The base includes a base and a support body; the support body is a concave structure placed laterally, and a through hole is provided on the side wall, and a guide rod is provided between the upper and lower side walls of the support body; the base is movably arranged on the support body up and down, wherein the base passes through the guide rod, and a hydraulic cylinder is also provided between the upper end surface of the base and the upper wall of the support body; a support leg is also provided on the lower end surface of the support body.

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