Automatic rock core identifying and sampling device for geological drilling

Abstract

The invention aims to provide an automatic rock core identifying and sampling device for geological drilling, and relates to the field of rock core sampling devices.The automatic rock core identifying and sampling device comprises a drill bit assembly, the drill bit assembly comprises a sleeve shaft, a clamping jaw, a first drill body and a top block, and a stratum can be drilled; the identification drill assembly comprises a second drill body, a conductive sheet, a sealing ring and a contact sheet and can be conductively connected with the rock core so as to detect the resistance of the rock core; the connecting rod assembly comprises a third drill body and a conductive wire and is used for extending the drill rod; the end rod assembly comprises a fourth drill body and an end cover and is used for being connected with the first winch, and lifting of the drill rod is facilitated. The rotating device comprises a shell, a rotating ring, a baffle, a motor and a limiting ring and is used for driving the drill rod to rotate, and the problem that the drilling depth is difficult to accurately grasp in existing geological drilling rock core sampling is solved.

Description

Technical Field

[0001] This invention relates to the field of core sampling device technology, and in particular to an automatic core identification and sampling device for geological drilling. Background Technology

[0002] Geological drilling, short for geological exploration, is a focused investigation and research work conducted on the geological conditions of a specific area, including rocks, stratigraphic structure, minerals, groundwater, and landforms, based on the needs of economic construction, national defense construction, and scientific and technological development. In current geological exploration work, drilling rigs are usually used to drill and sample the strata to obtain rock cores. However, the underground rock structure is complex and unclear, and multiple drilling operations are often required to reach the designated strata. Therefore, there is a need for an automatic core identification and sampling device for geological drilling that can automatically identify and sample during the drilling process, thereby accurately determining the drilling depth and improving the efficiency of geological drilling.

[0003] For example, CN202511737436.3 proposes a sampling device for geological exploration, including a geological sampling mechanism and a scale imprinting mechanism. The geological sampling mechanism includes a base plate, and a cylinder is fixedly connected to the top of the base plate. This invention relates to the field of geological exploration sampling technology. This geological exploration sampling device combines the geological sampling mechanism and the scale imprinting mechanism. The arrangement of these two mechanisms allows the sampling cylinder to descend for sampling, using the pressure of the core column to extend the U-shaped support frame into a side groove. When the sampling cylinder drives the core column upward, the U-shaped support frame supports the lifting plate. Combined with the inclined pressure plate, the inner groove slide, and the toothed block, the stamp block can continuously and evenly pass through the side groove, imprinting on both sides of the core column. This allows for the marking of scale lines while the core column is still a single unit inside the sampling cylinder. However, this method does not solve the aforementioned problem.

[0004] The present invention can distinguish and identify rock cores through the provided identification drill components and resistance indicator, accurately grasp the drilling depth, and improve the efficiency of geological drilling. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an automatic core identification and sampling device for geological drilling, which solves the problem of accurately determining drilling depth in existing geological drilling core sampling methods.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: an automatic core identification and sampling device for geological drilling, comprising a base placed on the site of use, a slide rod on the base, an inclined rod between the upper end of the slide rod and the lower end of the base, a resistance indicator and a generator on the base, a rotating device slidably mounted on the slide rod, a first winch and a second winch on the inclined rod, the second winch being connected to the rotating device via a steel wire to control the raising and lowering of the rotating device, a pulley block at the upper end of the inclined rod, and a drill rod connected to the first winch via a steel wire to control the raising and lowering of the drill rod.

[0007] Furthermore, the drill rod includes a drill bit assembly, an identification drill assembly, a connecting rod assembly, and an end rod assembly. The end rod assembly is connected to the first winch by a steel wire. The connecting rod assembly is installed at the lower end of the end rod assembly. The identification drill assembly is installed at the lower end of the connecting rod assembly. The drill bit assembly is installed at the lower end of the identification drill assembly. The drill bit assembly, the identification drill assembly, and the connecting rod assembly are hollow structures.

[0008] Furthermore, the drill bit assembly includes a sleeve, a jaw, a first drill body, and a top block. The upper end of the sleeve is threaded for connecting to an identification drill assembly or a connecting rod assembly. The first drill body is slidably mounted on the lower end of the sleeve. The top block is mounted on the first drill body. The first drill body has a corresponding mounting through hole. The top block has a first spring connected to the first drill body.

[0009] Furthermore, the lower end of the first drill body is provided with an alloy block, which is arranged in a circumferential manner. Below the alloy block is a concentrically arranged convex tooth structure, which is inclined with a higher outer periphery and a lower inner side.

[0010] Furthermore, the upper end of the first drill body is gear-shaped and is slidably connected to the sleeve shaft through the gear-shaped structure.

[0011] Furthermore, the lower end of the sleeve shaft is provided with a chuck, the lower end of the chuck protrudes inward, the first drill body is provided with a sliding groove corresponding to the chuck, the position of the top block corresponds to the position of the sliding groove, and the front end of the top block is conical.

[0012] Furthermore, the identification drill assembly includes a second drill body, a conductive plate, a sealing ring, and a contact plate. The lower end of the second drill body is connected to the drill bit assembly via a thread, and the upper end of the second drill body is fitted with a connecting rod assembly via a thread. The outer side of the second drill body is provided with a protruding ridge, and the upper end of the outer side of the second drill body is provided with a flange. The conductive plate is disposed within the protruding ridge of the second drill body and is isolated by a sealant, thereby protecting the conductive plate and preventing it from making conductive contact with the second drill body. The lower end of the conductive plate is provided with a discharge end that is not sealed by the sealant. The upper end of the second drill body is provided with a sealing ring, and the sealing ring is provided with a contact plate. The contact plate is conductively connected to the conductive plate, and the sealing ring is made of an insulating elastic material.

[0013] Furthermore, the connecting rod assembly includes a third drill body and a conductive wire. The lower end of the third drill body is connected to the identification drill assembly via a thread, and the upper end of the third drill body is connected to the end rod assembly via a thread. The outer side of the third drill body is provided with a protruding ridge, and the upper end of the outer side of the third drill body is provided with a flange. The conductive wire is disposed within the protruding ridge of the third drill body and is isolated by a sealant. The lower end of the conductive wire forms a contact point for conductively connecting to a contact piece. The upper end of the third drill body is provided with a sealing ring, and a contact piece is provided on the sealing ring. The contact piece and the conductive wire are conductively connected.

[0014] Furthermore, the end rod assembly includes a fourth drill body and an end cap. The end cap is rotatably mounted on the upper end of the fourth drill body. The end cap is connected to the first winch via a steel wire. The fourth drill body has a protruding ridge on its outer side and a flange on its upper outer side. A conductive wire is provided inside the protruding ridge of the fourth drill body. A conductive ring is provided at the upper end of the fourth drill body. The conductive ring is conductively connected to the conductive wire on the fourth drill body. A carbon brush assembly is provided on the end cap. The carbon brush assembly contacts and is conductively connected to the conductive ring. The carbon brush assembly is conductively connected to a resistance indicator via a wire.

[0015] Furthermore, the rotating device includes a housing, a rotating ring, a baffle, a motor, and a limiting ring. The housing is provided with a sliding shaft, and the housing is slidably mounted on a sliding rod via the sliding shaft. The rotating ring is rotatably mounted inside the housing, and the rotating ring is rotatably provided with a baffle. The baffle is limited by the rotating ring and can only rotate upwards. The baffle is a split design, and the rotating ring has a through hole in its center, which fits into the drill rod, thus slidably connecting with the drill rod. The motor is fixed to the housing, and the output shaft of the motor is provided with a gear, which meshes with the rotating ring for transmission. The limiting ring is slidably mounted above the housing, and a second spring is provided between the limiting ring and the housing. The limiting ring is slidably connected to the drill rod.

[0016] Beneficial effects The present invention has the following beneficial effects: (1) This device can effectively solve the problems of accuracy and efficiency in existing geological drilling. First, the resistance indicator and generator on the base provide the power support and data feedback for the entire device. The resistance indicator can transmit the resistance information of the formation to the connecting rod assembly and the end rod assembly by cooperating with the conductive structure on the identification drill assembly. Finally, it is displayed by the resistance indicator, realizing the automatic identification of different formations.

[0017] (2) The design of each component of the drill rod is also very ingenious. The alloy block and tooth structure in the drill bit assembly can effectively improve the drilling ability of the drill bit and adapt to rocks of different hardness. The cooperation of the chuck and the top block can effectively grab and fix the rock core when drilling the rock core, cut the rock core, ensure the core recovery rate, and prevent the rock core from falling off during the drilling process.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an exploded view of the drill rod and rotating device of the present invention; Figure 3 This is a schematic diagram of the drill bit assembly of the present invention; Figure 4 This is an exploded view of the drill bit assembly of the present invention; Figure 5 This is a cross-sectional view of the drill bit assembly of the present invention; Figure 6 This is a schematic diagram of the top block of the drill bit assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the identification drill assembly of the present invention; Figure 8 This is a cross-sectional view of the identification drill assembly of the present invention; Figure 9 This is a schematic diagram of the connecting rod assembly of the present invention. Figure 1 ; Figure 10 This is a schematic diagram of the connecting rod assembly of the present invention. Figure 2 ; Figure 11 This is a structural schematic diagram of the end rod assembly of the present invention; Figure 12 This is a cross-sectional view of the end cap of the end rod assembly of the present invention; Figure 13 This is a schematic diagram of the rotating device of the present invention; Figure 14 This is a cross-sectional view of the housing and rotating ring of the rotating device of the present invention.

[0020] Reference numerals: Base 1; Slide rod 2; First winch 3; Second winch 4; Resistance indicator 5; Generator 6; Inclined rod 7; Pulley block 8; Rotating device 9; Housing 901; Rotary ring 902; Baffle 903; Gear 904; Motor 905; Limiting ring 906; Second spring 907; Sliding shaft 908; Drill bit assembly 10; Sleeve shaft 101; Claw 102; First drill body 103; Top block 104; Alloy block 105; First spring 106; Identification drill assembly 11; Second drill body 111; Sealing adhesive 112; Conductive sheet 113; Sealing ring 114; Contact piece 115; Flange 116; Connecting rod assembly 12; Third drill body 121; Conductive wire 122; End rod assembly 13; Fourth drill body 131; End cap 132; Carbon brush assembly 133; Conductive ring 134. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 - Figure 14 This invention provides a technical solution: an automatic core identification and sampling device for geological drilling includes a base 1, which is placed on the site of use. A slide rod 2 is provided on the base 1, and an inclined rod 7 is provided between the upper end of the slide rod 2 and the end of the base 1 to support the slide rod 2 and maintain the stability of the structure. A resistance indicator 5 and a generator 6 are provided on the base 1. A rotating device 9 is slidably installed on the slide rod 2. A first winch 3 and a second winch 4 are provided on the inclined rod 7. The second winch 4 is connected to the rotating device 9 through a steel wire, thereby controlling the lifting and lowering of the rotating device 9. A pulley group 8 is provided at the upper end of the inclined rod 7. The first winch 3 is connected to the drill rod through a steel wire, thereby controlling the lifting and lowering of the drill rod.

[0023] like Figure 1 - Figure 12 As shown, the automatic core identification and sampling device for geological drilling includes a drill rod, which includes a drill bit assembly 10, an identification drill assembly 11, a connecting rod assembly 12, and an end rod assembly 13. The end rod assembly 13 is connected to the first winch 3 by a steel wire. The connecting rod assembly 12 is installed at the lower end of the end rod assembly 13. The identification drill assembly 11 is installed at the lower end of the connecting rod assembly 12. The drill bit assembly 10 is installed at the lower end of the identification drill assembly 11. The drill bit assembly 10, the identification drill assembly 11, and the connecting rod assembly 12 are hollow structures.

[0024] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the drill assembly 10 includes a sleeve 101, a chuck 102, a first drill body 103, and a top block 104. The upper end of the sleeve 101 is threaded for connecting to the identification drill assembly 11 or the connecting rod assembly 12. The first drill body 103 is slidably mounted on the lower end of the sleeve 101. The top block 104 is mounted on the first drill body 103. The first drill body 103 has a corresponding mounting through hole. The top block 104 has a first spring 106 connected to the first drill body 103. The lower end of the first drill body 103 has an alloy block 105. 105 is arranged in a ring. The bottom of the alloy block 105 has a concentric tooth structure. The tooth structure is inclined with a high outer periphery and a low inner side. The upper end of the first drill body 103 is a gear 904 columnar structure, which is slidably connected to the sleeve shaft 101 through the gear 904 columnar structure. The lower end of the sleeve shaft 101 is provided with a chuck 102. The lower end of the chuck 102 protrudes inward. The first drill body 103 is provided with a sliding groove corresponding to the chuck 102. The position of the top block 104 corresponds to the position of the sliding groove. The front end of the top block 104 is a pointed cone shape.

[0025] like Figure 7 and Figure 8 As shown, the identification drill assembly 11 includes a second drill body 111, a conductive sheet 113, a sealing ring 114, and a contact piece 115. The lower end of the second drill body 111 is connected to the drill bit assembly 10 via a thread, and the upper end of the second drill body 111 is connected to the connecting rod assembly 12 via a thread. The outer side of the second drill body 111 is provided with a protruding ridge, and the upper end of the outer side of the second drill body 111 is provided with a flange 116. The conductive sheet 113 is disposed in the protruding ridge of the second drill body 111 and is isolated by a sealant 112, thereby protecting the conductive sheet 113 and preventing it from making conductive contact with the second drill body 111. The lower end of the conductive sheet 113 is provided with a discharge end that is not covered by the sealant 112. The upper end of the second drill body 111 is provided with a sealing ring 114, and the sealing ring 114 is provided with a contact piece 115. The contact piece 115 is conductively connected to the conductive sheet 113. The sealing ring 114 is made of an insulating elastic material.

[0026] like Figure 9 and Figure 10 As shown, the connecting rod assembly 12 includes a third drill body 121 and a conductive wire 122. The lower end of the third drill body 121 is connected to the identification drill assembly 11 via a thread, and the upper end of the third drill body 121 is connected to the end rod assembly 13 via a thread. The outer side of the third drill body 121 is provided with a protruding ridge, and the upper end of the outer side of the third drill body 121 is provided with a flange 116. The conductive wire 122 is disposed in the protruding ridge of the third drill body 121 and is isolated by a sealant 112. The lower end of the conductive wire 122 forms a contact point for conductively connecting to a contact piece 115. The upper end of the third drill body 121 is provided with a sealing ring 114, and the sealing ring 114 is provided with a contact piece 115. The contact piece 115 and the conductive wire 122 are conductively connected.

[0027] like Figure 11 and Figure 12 As shown, the end rod assembly 13 includes a fourth drill body 131 and an end cap 132. The end cap 132 is rotatably mounted on the upper end of the fourth drill body 131. The end cap 132 is connected to the first winch 3 by a steel wire. The fourth drill body 131 has a protruding ridge on its outer side and a flange 116 on its upper outer side. A conductive wire 122 is provided inside the protruding ridge of the fourth drill body 131. A conductive ring 134 is provided at the upper end of the fourth drill body 131. The conductive ring 134 is conductively connected to the conductive wire 122 on the fourth drill body 131. A carbon brush assembly 133 is provided on the end cap 132. The carbon brush assembly 133 contacts and is conductively connected to the conductive ring 134. The carbon brush assembly 133 is conductively connected to the resistance indicator 5 by a wire.

[0028] In a specific embodiment: during use, the drill bit assembly 10, the identification drill assembly 11, the connecting rod assembly 12 and the end rod assembly 13 are connected by a threaded structure to form a drill rod, wherein the connecting rod assembly 12 can be multi-section, thereby extending the length of the drill rod.

[0029] Then, the drill rod is rotated by the rotating device 9, so that the drill rod is drilled into the soil, leaving sampled soil and rock cores in the borehole structure of the drill rod, thus carrying out geological drilling. During the process, the resistance indicator 5 is connected to the conductive plate 113 through the connection of the wire to the carbon brush assembly 133, the connection of the carbon brush assembly 133 to the conductive ring 134, and the connection of the conductive wire 122 to the contact plate 115, thereby measuring the resistivity of the soil and rock cores between the conductive plates 113. Based on the different resistivities of different soils and rock cores, the type of soil and rock cores is automatically identified, thereby determining whether drilling needs to continue, greatly shortening the rock core sampling time and improving the efficiency of geological drilling.

[0030] like Figure 13 and Figure 14As shown, the automatic core identification and sampling device for geological drilling includes a rotating device 9. The rotating device 9 includes a housing 901, a rotating ring 902, a baffle 903, a motor 905, and a limiting ring 906. A sliding shaft 908 is provided on the housing 901, and the housing 901 is slidably mounted on a sliding rod 2 via the sliding shaft 908. The rotating ring 902 is rotatably mounted inside the housing 901, and a baffle 903 is rotatably provided on the rotating ring 902. The baffle 903 is limited by the rotating ring 902 and can only rotate upwards. The baffle 903 is... The design features a split shape, with a through hole in the center of the rotating ring 902. The through hole fits into the drill rod, allowing for a slidable connection. The motor 905 is fixed to the housing 901, and a gear 904 is mounted on the output shaft of the motor 905. The gear 904 meshes with the rotating ring 902 for transmission. The limiting ring 906 is slidably mounted above the housing 901, and a second spring 907 is provided between the limiting ring 906 and the housing 901. The limiting ring 906 is slidably connected to the drill rod, thereby limiting the drill rod and keeping it stable.

[0031] In a specific embodiment: during use, the motor 905 is connected to the generator 6 via a wire and is started by manual control, thereby driving the gear 904 to rotate, which in turn drives the meshing swivel ring 902 to rotate, thereby driving the drill rod to rotate.

[0032] When adding the connecting rod assembly 12, the end rod assembly 13 is separated, the end rod assembly 13 is lifted by the first winch 3, and a new connecting rod assembly 12 is added between the end rod assembly 13 and the original connecting rod assembly 12 through the threaded structure. The baffle 903 is rotated and opened, and then the position of the rotating device 9 is adjusted by the second winch 4 so that the rotating device 9 is connected to the new connecting rod assembly 12, thereby extending the length of the drill pipe and sampling the rock core at a deeper depth.

[0033] During sampling, the second winch 4 lifts the rotating device 9, and the baffle 903 locks the flange 116 of the connecting rod assembly 12 (the second connecting rod assembly 12 from top to bottom) below the connecting rod assembly 12 (the first connecting rod assembly 12 from top to bottom) that needs to be disassembled. Then the drill rod is lifted, and the sleeve 101 is driven to rise during the lifting. Due to the friction between the drill bit assembly 10 and the soil and rock inside and outside and its own weight, the sleeve 101 slides on the first drill body 103, thereby causing the chuck 102 to move. Push the top block 104, thereby squeezing the soil and rock at the front end of the top block 104 to cut the rock core, which facilitates the removal of the rock core above after cutting. Since the top block 104 is located on the first drill body 103, close to the bottom of the drilled rock core (actual drilling depth), the rock core recovery rate is guaranteed. Then, separate the upper and lower ends of the connecting rod assembly 12 (the first connecting rod assembly 12 from top to bottom) that needs to be disassembled, thereby removing the connecting rod assembly 12 and then taking out the rock core from the connecting rod assembly 12.

[0034] Working principle: During the drilling process, generator 6 supplies power to motor 905, which drives gear 904 to rotate. Gear 904 meshes with ring 902, causing ring 902 to drive drill rod to rotate, thus realizing drilling of the strata. At the same time, the resistivity of soil and rock core is measured by resistance indicator 5. The type of soil and rock core is automatically identified by the difference in resistivity.

[0035] When it is necessary to extend the length of the drill pipe, the first winch 3 is used to lift the end rod assembly 13, and the new connecting rod assembly 12 is installed between the original assemblies through a threaded structure. The baffle 903 is rotated to open, and then the position of the rotating device 9 is adjusted by the second winch 4 to connect it with the new connecting rod assembly 12, thereby extending the drill pipe and allowing for sampling of deeper rock cores.

[0036] During the sampling process, the second winch 4 lifts the rotating device 9, causing the baffle 903 to be locked in the corresponding position. When the drill rod is lifted, the sleeve 101 slides on the first drill body 103, and the chuck 102 pushes the top block 104 to squeeze the soil and rock, cutting the core. Since the top block 104 is close to the bottom of the core, the core recovery rate can be effectively guaranteed. Then, the upper and lower ends of the connecting rod assembly 12 are separated, the assembly is removed, and the core is taken out.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic core identification and sampling device for geological drilling, comprising a base (1), the base (1) being placed on the site of use, a slide rod (2) being provided on the base (1), and an inclined rod (7) being provided between the upper end of the slide rod (2) and the end of the base (1), characterized in that, The base (1) is equipped with a resistance indicator (5) and a generator (6). A rotating device (9) is slidably installed on the slide bar (2). A first winch (3) and a second winch (4) are provided on the inclined bar (7). The second winch (4) is connected to the rotating device (9) through a steel wire, thereby controlling the lifting and lowering of the rotating device (9). A pulley block (8) is provided at the upper end of the inclined bar (7). The first winch (3) is connected to the drill rod through a steel wire, thereby controlling the lifting and lowering of the drill rod.

2. The automatic core identification and sampling device for geological drilling as described in claim 1, characterized in that, The drill rod includes a drill bit assembly (10), an identification drill assembly (11), a connecting rod assembly (12), and an end rod assembly (13). The end rod assembly (13) is connected to the first winch (3) by a steel wire. The connecting rod assembly (12) is installed at the lower end of the end rod assembly (13). The identification drill assembly (11) is installed at the lower end of the connecting rod assembly (12). The drill bit assembly (10) is installed at the lower end of the identification drill assembly (11). The drill bit assembly (10), the identification drill assembly (11), and the connecting rod assembly (12) are hollow structures.

3. The automatic core identification and sampling device for geological drilling as described in claim 2, characterized in that, The drill bit assembly (10) includes a sleeve (101), a chuck (102), a first drill body (103), and a top block (104). The upper end of the sleeve (101) is threaded for connecting to the identification drill assembly (11) or the connecting rod assembly (12). The first drill body (103) is slidably installed on the lower end of the sleeve (101). The top block (104) is installed on the first drill body (103). The first drill body (103) is provided with a corresponding mounting through hole. The top block (104) is provided with a first spring (106) connected to the first drill body (103).

4. The automatic core identification and sampling device for geological drilling as described in claim 3, characterized in that, The first drill body (103) has an alloy block (105) at its lower end. The alloy block (105) is arranged in a ring. Below the alloy block (105) is a tooth structure arranged in a concentric circle. The tooth structure is inclined with a high outer periphery and a low inner side.

5. The automatic core identification and sampling device for geological drilling as described in claim 3, characterized in that, The upper end of the first drill body (103) is gear (904) columnar, and the sleeve shaft (101) is slidably connected through the gear (904) columnar structure.

6. The automatic core identification and sampling device for geological drilling as described in claim 3, characterized in that, The lower end of the sleeve shaft (101) is provided with a chuck (102), the lower end of the chuck (102) protrudes inward, the first drill body (103) is provided with a sliding groove corresponding to the chuck (102), the position of the top block (104) corresponds to the position of the sliding groove, and the front end of the top block (104) is conical.

7. The automatic core identification and sampling device for geological drilling as described in claim 2, characterized in that, The identification drill assembly (11) includes a second drill body (111), a conductive plate (113), a sealing ring (114), and a contact plate (115). The lower end of the second drill body (111) is connected to the drill bit assembly (10) via a thread, and the upper end of the second drill body (111) is fitted with a connecting rod assembly (12) via a thread. The outer side of the second drill body (111) is provided with a protruding ridge, and the upper end of the outer side of the second drill body (111) is provided with a flange (116). The conductive plate (113) is located on the second drill body (111). The protruding ridge is provided with a sealant (112) for isolation, thereby protecting the conductive sheet (113) and preventing it from being electrically connected to the second drill body (111). The lower end of the conductive sheet (113) is provided with a discharge end that is not covered by the sealant (112). The upper end of the second drill body (111) is provided with a sealing ring (114). The sealing ring (114) is provided with a contact piece (115). The contact piece (115) is electrically connected to the conductive sheet (113). The sealing ring (114) is made of an insulating elastic material.

8. The automatic core identification and sampling device for geological drilling as described in claim 2, characterized in that, The connecting rod assembly (12) includes a third drill body (121) and a conductive wire (122). The lower end of the third drill body (121) is connected to the identification drill assembly (11) by a thread, and the upper end of the third drill body (121) is connected to the end rod assembly (13) by a thread. The outer side of the third drill body (121) is provided with a protruding ridge, and the upper end of the outer side of the third drill body (121) is provided with a flange (116). The conductive wire (122) is located in the protruding ridge of the third drill body (121) and is provided with sealant (112) for isolation. The lower end of the conductive wire (122) forms a contact point for conductive connection to a contact piece (115). The upper end of the third drill body (121) is provided with a sealing ring (114), and the sealing ring (114) is provided with a contact piece (115). The contact piece (115) and the conductive wire (122) are conductively connected.

9. The automatic core identification and sampling device for geological drilling as described in claim 2, characterized in that, The end rod assembly (13) includes a fourth drill body (131) and an end cap (132). The end cap (132) is rotatably mounted on the upper end of the fourth drill body (131). The end cap (132) is connected to the first winch (3) by a steel wire. The fourth drill body (131) has a protruding ridge on its outer side and a flange (116) on the upper end of its outer side. The protruding ridge of the fourth drill body (131) has a conductive wire (122) inside. The upper end of the fourth drill body (131) has a conductive ring (134) which is electrically connected to the conductive wire (122) on the fourth drill body (131). The end cap (132) has a carbon brush assembly (133) which contacts and is electrically connected to the conductive ring (134). The carbon brush assembly (133) is electrically connected to the resistance indicator (5) by a wire.

10. The automatic core identification and sampling device for geological drilling as described in claim 8, characterized in that, The rotating device (9) includes a housing (901), a rotating ring (902), a baffle (903), a motor (905), and a limiting ring (906). A sliding shaft (908) is provided on the housing (901), and the housing (901) is slidably mounted on the sliding rod (2) via the sliding shaft (908). The rotating ring (902) is rotatably mounted inside the housing (901), and a baffle (903) is rotatably provided on the rotating ring (902). The baffle (903) is limited by the rotating ring (902) and can only rotate upwards. The baffle (903) is... The design is split, and the rotating ring (902) has a through hole in the center, which fits the drill rod, thus slidingly connecting with the drill rod. The motor (905) is fixed on the housing (901), and a gear (904) is provided on the output shaft of the motor (905). The gear (904) meshes with the rotating ring (902) for transmission. The limiting ring (906) is slidably installed above the housing (901). A second spring (907) is provided between the limiting ring (906) and the housing (901). The limiting ring (906) is slidably connected with the drill rod.

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