Soil layer drilling equipment for underground water exploration sampling

Abstract

The invention relates to the technical field of soil layer drilling, in particular to soil layer drilling equipment for underground water exploration sampling, which comprises a base, a conveying mechanism and a drilling mechanism, and a flow guide plate with an adjustable inclination angle is further arranged in a discharge cavity; the conveying mechanism comprises a first shaft, a second shaft, a third shaft, a chain wheel, a chain and a hopper; the third shaft is rotatably arranged at the lower part of the material cavity, and the third shaft, the first shaft and the second shaft are distributed in an isosceles triangle; the drilling mechanism comprises a connecting cylinder, a conveying pipe and a drilling piece; a driving piece is further arranged in the connecting cylinder; the conveying pipe comprises a pipe body, a planet carrier, a conveying shaft and conveying blades; 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, M1 is larger than M2, and the drilling piece and the drilling outer edge keep drilling operation in the same direction. The thoroughness and the high efficiency of outward conveying, cleaning and cleaning of the drilled and excavated soil are improved, meanwhile, the structural design of the drilling part is optimized, it is guaranteed that the drill rod can conduct continuous and stable drilling operation, and the efficiency of soil layer drilling operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soil layer drilling, and in particular to soil layer drilling equipment for groundwater exploration and sampling. Background Art

[0002] Drilling equipment is often required in the process of groundwater exploration and sampling, but traditional drilling equipment has a complex structure and poor performance.

[0003] The existing technology "CN118498880B, drilling structure for drilling well soil layer" is recorded as "This invention discloses a drilling structure for drilling well soil layer, which relates to the field of well drilling and excavation technology, and solves the problem that when actually excavating the well soil layer, the excavated soil and the like will accumulate inside the excavated well hole and be difficult to discharge, thus affecting the efficiency and effect of the well excavation. The drilling structure for drilling well soil layer includes an external bracket assembly, a universal wheel, a drilling position adjustment assembly, an integrated soil layer drilling mechanism, a drilling The head and infrared rangefinder are provided with two groups of outer bracket assemblies, and a plurality of groups of universal wheels are installed at the bottom by screws, and the tops of the two groups of outer bracket assemblies are installed with drilling position adjustment assemblies by screws. In the present invention, when drilling and excavating the wellbore, the soil excavated by drilling and excavation can be moved up and emptied synchronously, so that the excavated soil will not accumulate inside the wellbore, ensuring that the excavated soil will not affect the infrared rangefinder's detection of the excavation depth. At the same time, it is convenient for the infrared rangefinder to detect the drilling and excavation depth.

[0004] However, the above-mentioned prior art still has the following disadvantages: First, although the drilling structure of the above-mentioned prior art solves the problem of excavated soil moving up and emptying to a certain extent, the structure is relatively simple, and the emptying fan is close to the drilling position. The emptying effect of the accumulated soil transported up from the drill hole is not good, and other auxiliary machinery is still required for auxiliary cleaning, which is complicated to operate, time-consuming and labor-intensive. At the same time, when the emptying fan rotates, it is also easy for some soil to fall into the drill hole again, which seriously restricts the efficient transportation and discharge of the excavated soil. Cleaning and cleaning operations. Second, the drilling structure of the above-mentioned prior art adopts a simple drill bit structure, which is difficult to adapt to the drilling operation with a complex sand and gravel stratum structure, and it is easy for the drill bit to be blocked and damaged. At the same time, further analysis shows that when drilling in the soil layer, the drilling is smooth and the speed is fast, and the soil is very easy to stick and easily adhere to the drill rod, resulting in a slowdown in the transportation speed of the excavated soil. In severe cases, it will also cause the suspension of the upward movement of the excavated soil, affecting the operation efficiency of the soil layer drilling. For this reason, we need a soil layer drilling equipment for groundwater exploration and sampling. Summary of the invention

[0005] In order to solve the above-mentioned shortcomings and deficiencies in the use of the existing soil drilling structure, the present invention provides a soil drilling equipment for groundwater exploration and sampling, so as to ensure the smoothness of the upward movement and emptying of the drilled soil, improve the thoroughness and efficiency of the outward transportation and cleaning of the drilled soil, and at the same time optimize the structural design of the drilling part to ensure the sustainable and stable drilling operation of the drill rod, thereby improving the efficiency of the soil drilling operation.

[0006] The present invention adopts the following technical solutions to achieve the above purpose: A soil drilling device for groundwater exploration and sampling, comprising a base, a feeding mechanism and a drilling mechanism, the base being distributed vertically, and a discharge cavity and a material cavity being respectively provided on the left and right sides of the upper part of the base, a guide plate with an adjustable inclination angle being also provided in the discharge cavity, and one end of the guide plate leading to the material cavity; the feeding mechanism comprising a first shaft, a second shaft, a third shaft, a sprocket, a chain and a hopper; the first shaft being rotatably arranged at the upper part of the material cavity and being located above the guide plate; the second shaft being rotatably arranged in the material cavity and maintaining the same height as the first shaft; the third shaft being rotatably arranged at the lower part of the material cavity and being 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 distributed front and back, respectively installed on corresponding sprockets to drive the three shafts to rotate synchronously; the hopper is connected to the chains distributed on both sides by a connecting rod The bottom of the material chamber is provided with a feeding hole; the drilling mechanism comprises 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 comprises 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.

[0007] Preferably: 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.

[0008] Further preferred: 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.

[0009] Further preferred: 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.

[0010] Preferably: 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.

[0011] Further preferred: 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.

[0012] Further preferably, the cross section of the connecting shaft is any one of a straight shape, a star shape, and a cross shape.

[0013] Further preferred: 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 a ring, 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, the clamping plate and the clamping groove are matched and installed, and the outer tooth plate and the lowest conveying pipe are kept relatively rotatable but not relatively movable; 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.

[0014] Further preferred: 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 the lower end concave inward, and a pointed end is provided at the lower end, and 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; and 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.

[0015] Preferably: 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, 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.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a reasonable structural design, and by setting a specially structured conveying pipe, it not only ensures the adaptability of the length requirement for soil layer drilling and excavation, but also ensures the smoothness of the upward movement and emptying of the drilled soil, avoiding the blockage of the material spiral conveying channel caused by soil adhesion; it further improves the thoroughness and efficiency of the outward transportation and cleaning of the drilled soil; since the eccentric shaft structure driven by the traditional motor is omitted, the manufacturing process is simplified and the dynamic balance of the structure is improved; at the same time, the structural design of the drilling part is optimized to ensure the sustainable and stable drilling of the drill rod Operation, due to the transmission of the outer tooth plate and the inner meshing of the central gear, the differential speed cooperation of the inner and outer drill rods is formed, which not only increases the drilling strength of the drill rod and ensures the stability and efficiency of the soil drilling operation, but also is beneficial to the secondary dispersion treatment of the drilled soil, avoids soil adhesion, and improves the transportation and emptying effect; the entire drilling component structure is relatively short, saving structural space, and can be compressed by more than 25% compared with traditional drill rods of the same efficiency; compared with ordinary drill rods of the same power, the volume and weight can be reduced by about 30%, which greatly improves the efficiency of soil drilling operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 for Figure 2A magnified view of the structure of part A; Figure 4 for Figure 2 A magnified view of the structure of part B in FIG. Figure 5 is a schematic diagram of an adjusting member of the present invention; Figure 6 It is a structural schematic diagram of the feeding mechanism of the present invention; Figure 7 It is a partial structural diagram of the delivery pipe of the present invention; Figure 8 The structural view of the drilling member of the present invention is Figure 1 ; Fig. 9 The structural view of the drilling member of the present invention is Figure 2 .

[0019] In the figure: 1. base; 11. discharge cavity; 12. material cavity; 13. guide plate; 14. feed hole; 15. rotating shaft; 16. support leg; 17. base; 18. support body; 19. through hole; 110. guide rod; 111. hydraulic cylinder; 2. feeding mechanism; 21. first axis; 22. second axis; 23. third axis; 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 member; 4. driving member; 41. driving motor; 42. driving shaft ;43. spiral blade;5. connecting piece;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. tube body;62. planetary carrier;63. conveying shaft;64. conveying blade;7. adjusting piece;71. adjusting motor;72. disc;73. split shaft;74. linkage rod;81. center drill rod;811. drill teeth;82. outer tooth plate;83. outer drill rod;831. tip;832. cutting edge;84. center gear;85. feeding hole;86. clamping plate;87. clamping groove;88. transmission teeth. DETAILED DESCRIPTION

[0020] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "provided with" that may appear should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the 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.

[0021] It should be noted that, in the specific implementation of the present invention, the possible terms such as "first" and "second" and other relational terms 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 possible terms such as "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the possible statements "including one" and other defined elements do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0022] Example: 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. Since the present invention omits the eccentric shaft structure driven by the traditional motor, the manufacturing process is simplified and the dynamic balance of the structure is improved; at the same time, the structural design of the drilling part is optimized to ensure that the drill rod can continuously and stably perform drilling operations. Due to the transmission of the outer tooth plate 82 and the central gear 84 meshing internally, an operation mode of differential cooperation drilling of the inner and outer drill rods is formed, which not only increases the drilling strength of the drill rod, but also ensures the stability and 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 the side wall is provided with a through hole 19. The purpose of providing the through hole 19 is not to affect the discharge operation of the discharge chamber 11. A guide rod 110 is provided between the upper and lower side walls of the support body 18; the base 17 is movably arranged on the support body 18, the base 17 passes through the guide rod 110, and a hydraulic cylinder 111 is also provided between the upper end surface of the base 17 and the upper wall of the support body 18; in this way, the telescopic change of the hydraulic cylinder 111 will drive the base 17 to move up and down along the guide rod 110, thereby completing the downward movement of the drilling. A support leg 16 is also provided on the lower end surface of the support body 18, and such a setting is convenient for improving the stability of the working state. In a preferred embodiment, a moving wheel with a braking function is also provided on one side of the support leg 16 at the lower end of the base 1 (not shown in the figure). The moving wheel there is connected with a telescopic rod to realize the lifting function, the purpose of which is to ensure the overall stability of the base 1 while improving the convenience of the drilling equipment to move at the outdoor sampling point.

[0023] Among them, a discharge chamber 11 and a material chamber 12 are respectively provided on the left and right sides of the upper part of the base 1, specifically, a discharge chamber 11 and a material chamber 12 are provided on the left and right sides of the base 17. A guide plate 13 with an adjustable inclination angle is also provided in the discharge chamber 11, and one end of the guide plate 13 leads to the material chamber 12. The cross section of the discharge chamber 11 is a rectangular structure, and the overall structure is an inclined structure with the left lower and the right higher; at the same time, the discharge chamber 11 remains through. The output end of the discharge chamber 11 can be connected to a conveyor belt for continuous material transportation, or it can be connected to a collection box for centralized collection and processing of the soil, the purpose of which is to transport the drilled soil away from the drilling hole position to avoid the soil from being scattered into the drilling hole again, thereby improving the drilling operation efficiency. The front and rear ends of the guide plate 13 are connected to the side walls of the discharge chamber 11 through a rotating shaft 15. Preferably, in the initial state, the inclination angle a of the guide plate 13 is 25-45 degrees. An adjusting member 7 is also provided between the guide plate 13 and the side wall of the discharge chamber 11, specifically, an adjusting member 7 is provided between the guide plate 13 and the bottom end wall of the discharge chamber 11. 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 mounted on the bottom end surface of the discharge chamber 11 through a bracket. The disc 72 is sleeved and mounted on the output shaft of the adjusting motor 71, and 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 larger the distance between the two, the larger the adjustment range of the inclination angle of the guide plate 13. One end of the linkage rod 74 is rotatably connected to the guide plate 13, and the other end is rotatably connected to the split shaft 73. The purpose of such a setting is that although the inclined distribution of the guide plate 13 has a certain sustainable transmission effect when drilling and digging soil for transportation, there is also the phenomenon of soil adhesion or accumulation. To this end, the present invention intermittently adjusts the inclination angle of the guide plate 13 by setting an adjustment member 7, thereby achieving a shaking effect on the soil material transported on the guide plate 13, and improving the smoothness of soil material transportation. Specifically, when the adjustment motor 71 is started, it will drive the disc 72 to rotate synchronously. The rotation of the disc 72 will change the position of the scoring shaft 73, and then drive the linkage rod 74 to move forward and backward, which is presented as a shaking operation with a change in the inclination angle in the movement of the guide plate 13.

[0024] In this embodiment, the feeding mechanism 2 includes a first shaft 21, a second shaft 22, a third shaft 23, a sprocket 24, a chain 25 and a hopper 26. The first shaft 21 is rotatably arranged at the upper part of the material chamber 12 and is located above the guide plate 13; wherein 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 maintains 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 arrangement is to ensure the stability of the feeding operation of the hopper 26 driving the drilled soil material, and to facilitate the subsequent automatic unloading operation. The sprocket 24 is installed on the first shaft 21, the second shaft 22 and the third shaft 23; wherein each shaft is provided with two sprockets 24 distributed front and back. There are two chains 25 distributed front and back, which 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; wherein the hopper 26 is a shoveling bucket-like structure. Preferably, an auxiliary motor can also be set on the second shaft 22 as a backup drive. Under normal conditions, the main motor 28 works normally and the auxiliary motor does not work. When a large number of hoppers are set and multiple hoppers 26 on the chain 25 shovel a lot of material, the main motor 28 and the auxiliary motor can be started synchronously due to the decrease in the speed of the first shaft 21. Furthermore, when an abnormal failure occurs in the main motor 28, the auxiliary motor can also be turned on for conveying and driving operations.

[0025] The chain 25 is provided with a connecting plate 29, and the connecting plates 29 are evenly distributed. The connecting rod 27 is provided on the connecting plates 29 at the corresponding positions of the two chains 25 in front and behind. One side of the hopper 26 is fixedly mounted on the connecting rod 27. The upper end of the guide plate 13 is located in the middle of the connecting line between the first shaft 21 and the second shaft 22. The connecting lines of the guide plate 13, the first shaft 21 and the second shaft 22 are vertically distributed, and there is no interference between the movement of the guide plate 13 and 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 conveying of the soil drilled from the lower part into the material chamber 12 under the action of the conveying structure, and then facilitate the subsequent centralized processing without affecting the sustainable drilling operation of the drilling hole. 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 configuration, the start of the main motor 28 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 to rotate counterclockwise as a whole. The hopper 26 located at the bottom will shovel the drilled soil material into its own space, and then when it rotates to the corresponding horizontal position at the upper part of the material chamber 12, the hopper 26 starts to automatically unload the material onto the guide plate 13 below. In a preferred technical solution, a ring-shaped enclosure with an opening on one side (not shown in the figure) is also provided at the upper end of the guide plate 13 to facilitate the gathering of soil materials and prevent the soil materials on the guide plate 13 from spilling. In a preferred technical solution, a pusher (not shown in the figure) can also be provided in the material chamber, wherein the pusher includes an electric hydraulic telescopic rod and a push plate; the electric hydraulic telescopic rod is provided on the side wall of the material chamber, and the push plate is provided at one end of the electric hydraulic telescopic rod. In the initial state, the electric hydraulic telescopic rod is retracted, and the push plate is located on one side of the feed hole. In actual operation, the efficiency of the hopper 26 rotating to clean the drilled soil is adjusted to basically match the efficiency of the drive motor 41 driving the drill rod to drill and empty the soil material. At the same time, when the drilled soil material emptied and moved upward in the feed hole 14 reaches a certain level, 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 push plate, so as to avoid the phenomenon of too much soil material accumulation causing feeding difficulties.

[0026] In this embodiment, the drilling mechanism 3 includes a connecting tube 31, a conveying pipe 32 and a drilling member 33. The connecting tube 31 is vertically distributed, and the top end is connected and fixed to the base 1, specifically, the connecting tube 31 is connected to the base 17. The inner cavity of the connecting tube 31 is connected to the material cavity 12. The purpose of such a setting is to facilitate the emptying of the drilled soil material that moves upward into the connecting tube 31 and enters the material cavity 12 from the feed hole 14. A driving member 4 is also provided in the connecting tube 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 on the outside of the driving motor 41 to prevent the drilling soil from causing adverse effects on the motor. The driving shaft 42 is vertically distributed and connected to the output shaft of the driving motor 41. The spiral blade 43 is provided 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 arrangement is that when the drive motor 41 is turned on, it will drive the drive shaft 42 and the spiral blade 43 to rotate, so that the drilled soil entering the connecting cylinder 31 is emptied and moved upward into the material chamber 12 under the rotation of the spiral blade 43, so as to facilitate subsequent soil transportation and sampling operations.

[0027] In this embodiment, the delivery pipe 32 is multiple and can be connected end to end through the connector 5. The purpose of this arrangement is to meet the needs of drilling at different depths, and installation and disassembly are time-saving and labor-saving, and the operation is simple. Among them, the delivery pipe 32 includes a pipe body 61, a planetary frame 62, a delivery shaft 63 and a delivery blade 64. The pipe body 61 is vertically distributed, and the planetary frame 62 is two and fixedly installed in the upper and lower parts of the pipe body 61 respectively. Specifically, as Figure 7 As shown, the planetary frame 62 includes a central ring located inside, an outer support ring located outside, and ribs located between the central ring and the outer support ring. Among them, when the drilled soil is emptied and moved upward along the conveying blade 64 channel (that is, the material channel formed by the spiral groove of the conveying blade 64), the ribs will form a cutting of the soil material, so as to prevent the soil produced by drilling from 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 in the pipe body 61 and 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 structural design of the present invention is reasonable. By setting a conveying pipe 32 with a special structure, it not only ensures the adaptability length requirement of soil layer drilling and excavation, but also ensures the smoothness of the upward movement and emptying of the drilled soil, avoids the problem of blocking the material spiral conveying channel caused by soil adhesion and accumulation, and further improves the thoroughness and efficiency of the drilling soil to be transported outward and cleaned.

[0028] 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 an integrally formed structure. The connecting groove 52 is opened at the upper end of the conveying shaft 63, and keeps the connecting shaft 51 of the conveying pipe 32 matched with the connecting groove 52 of the adjacent lower conveying pipe 32. The purpose of such a setting is to facilitate the rotation effect of the internal conveying shaft 63 when the adjacent conveying pipes 32 are connected. Only one motor drive is set, the structure is compact, and the design is reasonable. The outer edge upper support plate 53 is an annular structure and is fixedly installed on the upper end of the conveying pipe 32 by welding, and is provided with a mounting 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 by a fixing bolt 56 installed at the mounting hole 55; the purpose of such arrangement is to ensure the stability of the connection between the two adjacent conveying pipes 32, and a sealing rubber pad is also provided at the connection between the two to ensure the sealing effect. The lower end of the connecting tube 31 is also provided with the outer edge lower support plate 54; the lower end of the driving shaft 42 is also provided with the connecting shaft 51, and the two are integrally formed. Such arrangement is used to connect adjacent conveying pipes 32 and ensure the stability of the overall drilling operation and material conveying operation. The conveying pipe 32 at the lowest end is connected to the drilling member 33, and the conveying pipe 32 at the top is fixedly connected to the connecting tube 31. The cross section of the connecting shaft 51 is any one of a straight line, a star, and a cross. In this embodiment, it is preferred that the connecting shaft 51 adopts a cross-shaped structure.

[0029] In this embodiment, the drilling member 33 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. Preferably, the drilling member 33 includes a central drill rod 81, an outer tooth plate 82, and an outer drill rod 83. The central drill rod 81 is vertically distributed, and the top end is fixedly connected to the conveying shaft 63 of the lowest conveying pipe 32 by welding, and a central gear 84 is also provided on the central drill rod 81. The outer tooth plate 82 is an annular structure and is sleeved and installed on the outside of the central drill rod 81. A material delivery hole 85 is also provided on the outer tooth plate 82, and the material delivery hole 85 is a plurality of annularly evenly distributed holes. A clamping plate 86 is also provided at the outer edge of the upper end of the outer tooth plate 82, and a clamping slot 87 is also provided at the lower end of the lowest conveying pipe 32. The clamping plate 86 is matched with the clamping slot 87 and installed to keep the outer tooth plate 82 and the lowest conveying pipe 32 relatively rotatable and non-movable. The inner wall of the outer tooth plate 82 is also provided with transmission teeth 88, and the transmission teeth 88 maintain internal meshing transmission with the center gear 84; that is, the center gear 84 maintains internal meshing transmission with the outer tooth plate 82. The center gear 84 and the center drill rod 81 are an integrated structure, that is, the drive motor 41 drives the drive shaft 42-transport shaft 63-center drill rod 81 to rotate as a whole, and synchronously completes the drilling operation of the sampling point and the emptying and upward transportation operation of the drilled soil. The outer drill rod 83 is arranged below the outer tooth plate 82; the outer side surface of the outer tooth plate 82 is kept flush with the outer side surface of the conveying pipe 32; the length of the center drill rod 81 is greater than the set length of the outer drill rod 83. The purpose of such a setting is to form a matching mode of center drilling and peripheral rotation, which greatly improves the operation efficiency of soil drilling.

[0030] In this embodiment, the outer drill rod 83 and the outer tooth plate 82 are an integrally formed structure, and the outer drill rod 83 is an arc structure with a concave lower end, and a tip 831 is provided at the lower end. The outer drill rod 83 is also provided with a cutting edge 832 on one side corresponding to the drilling direction; the outer drill rod 83 is a plurality of evenly distributed rings. The purpose of such a setting is that the drilling of the center drill rod 81 is used as the main drive, and at the same time, the center gear 84 on the center drill rod 81 rotates synchronously, which will drive the rotation of the outer tooth plate 82 meshing with it. Since the two are internal meshing transmission modes, the outer drill rod 83 located at the outer edge of the outer tooth plate 82 rotates at a speed less than the center drill rod 81, that is, the outer drill rod 83 performs a circular rotation motion with the center drill rod 81 as the center, realizing the rotary cutting motion of the outer drill rod 83 on the outer edge soil layer, enhancing the drilling effect, and at the same time, the arc-shaped concave outer drill rod 83 will also form a gathering and pushing effect on the soil after drilling, accelerating the operation volume of emptying and upward transportation of soil materials. Preferably, a drill tooth 811 is further provided at the bottom end of the central drill rod 81, and the two are an integrally formed structure, and the drill tooth 811 is distributed in an inclined structure. Among them, a wear-resistant superhard coating is coated on the central drill rod 81, the drill tooth 811 and the outer drill rod 83. Specifically, the drill tooth 811 is inclined in the direction of drilling rotation, and the arrangement of the drill tooth 811 will enhance the drilling effect and accelerate the drilling speed of the soil layer.

[0031] The present invention adopts the design of optimizing the drilling structure to ensure the continuous, stable and efficient drilling operation of the drill rod. Due to the transmission of the outer tooth plate 82 and the central gear 84 meshing internally, the operation mode of differential cooperation of the inner and outer drill rods is formed, which not only increases the drilling strength of the drill rod, but also improves the service life of the drill rod, and ensures the stability and efficiency of the soil layer drilling operation. At the same time, with the assistance of spiral conveying, feed hole-rib-feed hole, it is also conducive to the secondary breaking up of the drilled soil, avoiding soil adhesion and improving the conveying and emptying effect. The entire drilling piece 33 has a relatively short structure volume, which saves structural space. Compared with the traditional drill rod of the same efficiency, the length can be compressed by more than 25%; compared with the ordinary drill rod of the same power, the volume and weight can be reduced by about 30%, which greatly improves the efficiency of the soil layer drilling operation.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should 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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