Ice drill coring equipment for exploration and working method thereof

Abstract

The present invention discloses an ice drill coring device for exploration and a working method thereof, comprising a crawler trolley, a lift installed on the crawler trolley, a coring mechanism installed on the lift, the coring mechanism comprising a fixed sleeve, a coring barrel sleeved on the outer side of the fixed sleeve, a limiting rod embedded on the inner side wall of the coring barrel, a first mounting groove provided on the inner side of the limiting rod, a limiting top block installed in the first mounting groove, the limiting top block being hinged to the inner wall of the first mounting groove through a supporting shaft, the supporting shaft being close to the lower end of the limiting top block, a limiting slot being provided on the side surface of the limiting rod close to the axis of the coring barrel, a limiting slide being slidably embedded in the limiting slot, a limiting through-hole being provided on the limiting slide, the limiting top block being limited by the limiting through-hole and the inner cavity structure of the first mounting groove, so that the end of the limiting top block maintains stable contact with the core body, ensuring that as many core bodies as possible are taken out to the ground.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, in particular to an ice drill coring device for exploration and a working method thereof. Background Art

[0002] As the types of civil engineering continue to increase, it is usually necessary to explore and measure the basic geological layers, so it is necessary to drill and coring at different locations. When building a winter automobile test site, it is often necessary to build different types of ice and snow roads at different geological locations. Therefore, a device is needed that can not only coring at different geological layers, but also ice coring on ice layers.

[0003] The application document with publication number CN106052653A discloses an automated ice breaking and flow measurement platform, which includes a trolley provided with an insulation device for placing a measuring device and a liftable ice drilling device, and a leveling device is provided on the bottom surface of the trolley.

[0004] Based on the above patents and prior art, the following questions are raised:

[0005] Problem 1: There are often cavities or water bodies beneath geological layers. When the core material being drilled is located at the lowest part of the formation, it is easy for the core material to separate from the geological layer and the core barrel will not be able to stop and clamp it in time, causing the drilled core to fall or be incomplete, making it difficult to retrieve it for research on the ground.

[0006] Problem 2: Because the material within the geological layer is not always uniform, the coring barrel often experiences unavoidable vibration or shaking during the coring process, resulting in incomplete core structures and interfering with subsequent research.

[0007] Question 3: When obtaining ice cores, the ice layer is often very tightly condensed, and the drilling hole size is limited during the core drilling process, making it difficult to drill and cut the core simultaneously. As a result, the drilled ice core cannot be separated and removed from the ice layer, making it impossible to obtain the core body, delaying subsequent research. Summary of the Invention

[0008] The purpose of the present invention is to provide an ice drill coring device for exploration to address the above-mentioned problems and shortcomings, thereby improving overall work efficiency.

[0009] The present invention solves at least one of the following technical problems:

[0010] (1) The core barrel is not clamped in time, and the drilled core falls off or is incomplete;

[0011] (2) The coring process often experiences interference phenomena such as shaking, resulting in incomplete core structures;

[0012] (3) The ice layer is very tightly condensed, the drilling hole size is limited, and it is difficult to drill and cut the core simultaneously, resulting in the inability to separate and remove the drilled ice core from the ice layer.

[0013] The objectives of the present invention can be achieved through the following technical solutions: an ice drill coring equipment for exploration, comprising a crawler trolley, an elevator installed on the crawler trolley, a coring mechanism installed on the elevator, the coring mechanism comprising a fixed sleeve, a coring barrel sleeved on the outer side of the fixed sleeve, a limiting rod embedded in the inner wall of the coring barrel, a first mounting groove provided on the inner side of the limiting rod, a limiting top block installed in the first mounting groove, the limiting top block is hinged to the inner wall of the first mounting groove through a supporting shaft, the supporting shaft is close to the lower end of the limiting top block, a limiting slide groove is provided on the side surface of the limiting rod close to the axis of the coring barrel, a limiting slide plate is slidably embedded in the limiting slide groove, and a limiting through-hole is provided on the limiting slide plate.

[0014] As a further solution of the invention, there are several limit rods and they are evenly distributed at equal angles, there are several first mounting grooves and they are evenly distributed at equal distances, the limit perforations correspond to the first mounting grooves one by one, a first motor is buried in the top of the fixed sleeve, the rotating shaft of the first motor is vertically downward, a lifting screw is installed at the lower end of the rotating shaft of the first motor, a lifting slider is provided on the threaded sleeve of the lifting screw, a lifting slot is provided on the side wall of the fixed sleeve, a support plate and a second motor are provided on the peripheral movable sleeve of the fixed sleeve, the second motor is below the support plate and fixedly connected to it, a protrusion is provided on the side wall of the lifting slider and the protrusion passes through the lifting slot and is fixedly connected to the support plate, a transmission drum is installed on the periphery of the second motor, and the core barrel is fixedly connected to the transmission drum.

[0015] As a further solution of the invention, several limit push rods are provided below the second motor and around the outside of the fixed sleeve. The telescopic ends of the limit push rods are jointly installed with a transmission ring plate. The lower part of the transmission ring plate is installed with a first bearing. The outer ring of the first bearing is connected to each limit slide plate, and the top of the transmission drum is rotatably connected to the support plate through the second bearing.

[0016] As a further solution of the invention, a connecting block is installed at the lower end of the fixed sleeve, and a plurality of wedge blocks are fixedly connected to the outer periphery of the connecting block. A heating wire is buried in the wedge block, and the power supply line of the heating wire is buried in the side wall of the fixed sleeve.

[0017] As a further solution of the invention, the cross-section of the wedge block is a triangular structure, the lower surface of the wedge block and the lower surface of the connecting block are located in the same plane and remain horizontal, and the lower surface of the wedge block is provided with several connecting grooves arranged side by side.

[0018] As a further solution of the invention, a triangular guide block is installed on the upper part of the wedge block, and the triangular guide block is fixedly connected to the fixed sleeve. A second mounting groove is opened on the lower part of the side wall of the core barrel, and a slitting knife is installed in the second mounting groove. One end of the slitting knife is elastically hinged to the second mounting groove through an elastic rotating shaft, and a shielding piece is installed on the outside of the second mounting groove and close to the other end of the slitting knife.

[0019] As a further solution of the invention, a spiral blade is provided around the outer circumference of the core barrel.

[0020] As a further solution of the invention, a lower pressure plate is installed at the movable end of the elevator, and several transmission pressure rods connected end to end are provided between the lower pressure plate and the core-drilling mechanism. A limit plate is provided at the lower part of the elevator and directly below the lower pressure plate. The transmission pressure rod passes through the limit plate, and the outer periphery of the transmission pressure rod slides against the limit plate.

[0021] As a further solution of the invention, a third motor is installed at the lower part of the lower pressure plate, and a transmission sleeve is installed at the lower end of the rotating shaft of the third motor and the lower end of each transmission pressure rod. A connecting transmission block is installed at the top of each transmission pressure rod and the top of the fixed sleeve, and the connecting transmission block is correspondingly engaged with the transmission sleeve.

[0022] A method for operating an ice drill coring device for exploration comprises the following steps:

[0023] Step 1: Use a crawler trolley to move the elevator and coring mechanism on the ice surface, then the elevator moves the coring mechanism down and rotates the ice layer to drill the core;

[0024] Step 2: The transmission drum is rotated by the second motor to control the rotation speed of the coring drum, and the core is obtained by rotating the coring drum;

[0025] The first mounting groove is blocked by the inner wall of the limiting slide plate, and the limiting slide plate is reversed and retracted into the first mounting groove, thereby keeping the inner wall of the core barrel unobstructed.

[0026] Step 4: The lifting screw is rotated by the first motor to push the lifting slider up and down, thereby pressing the core barrel down through the support plate, and the core barrel is kept moving along the axial direction of the fixed sleeve during the coring process through the fixed sleeve, further maintaining the optimal ice breaking rate. At the same time, the height of the obtained core body can be flexibly adjusted through the flexible adjustment of the lifting screw.

[0027] Beneficial effects of the present invention:

[0028] (1) During the coring process, after the core is separated from the ice layer, the limiting slide is moved downward to move the limiting perforation to one side of the limiting top block. Before the limiting perforation is moved, the limiting top block maintains a tendency to rotate toward the axis of the coring barrel due to the shape of the first mounting groove and the position of the supporting shaft. As the limiting perforation moves downward, the front end of the limiting top block rotates and passes through the limiting perforation and then abuts against the side of the core. Then the limiting slide continues to move downward, and the limiting top block is limited by the limiting perforation and the inner cavity structure of the first mounting groove, so that the end of the limiting top block maintains a stable abutment with the core. When the elevator moves the coring mechanism upward, the limiting top block forms a clamping structure with the core, thereby ensuring that as many cores as possible are taken out to the ground;

[0029] (2) When working, the wedge block and the electric heating wire cooperate with the core barrel, and the heat of the electric heating wire is used to melt the top surface of the ice layer to be cored first, so that the lower surface of the wedge block and the connecting block are embedded in the ice layer, and then the electric heating is stopped, so that the wedge block forms a limiting component to ensure the stable state of the fixed sleeve and improve the stability of the core barrel rotation process. When the core barrel stops rotating, the melted ice water refreezes with the coldness of the ice layer itself and is frozen and connected to the wedge block, thereby further making the core body more firmly obtained, so as to facilitate the lifting and acquisition of the core body. The taking and placing process is simple and efficient. The connection complexity with the ice layer surface is increased by the connecting groove, so that the fixed sleeve is further tightly connected to the core body through the wedge block;

[0030] (3) During operation, the first bearing is used to avoid interference, and the limiting slide plate rotates synchronously with the core barrel. The first bearing is moved up and down, and each limiting slide plate is adjusted to move up and down at the same time, so as to control the rotation and retraction of the limiting top block. The limiting push rod is operated synchronously, so that the limiting slide plate can be flexibly adjusted to ensure that the limiting top block is stably abutted against the side of the core body, and the inertia of the core body when it is moved upward is used to further abut the limiting top block against the core body, thereby ensuring that the core body is fully taken out, and the common abutment limit of the limiting top block prevents the core body from hanging in the air and falling off during coring, thereby ensuring the complete acquisition of the core body and preventing the core body from falling into a cavity, underground lake or other difficult-to-collect environment;

[0031] (4) When moving, the slitting knife is first guided by the triangular guide block to prevent the slitting knife from being interfered with by the connecting block. When the coring work is completed, the coring barrel is rotated in the opposite direction but does not move downward. The tip of the slitting knife maintains pressure on the side of the core body under the action of the elastic shaft and generates a slitting force until the slitting knife completes the slitting and separation of the core body and the material layer, thereby increasing the speed of core acquisition and improving the integrity and beauty of the core body's appearance for subsequent research.

[0032] (5) The spiral blade rotates synchronously with the core barrel to promote the downward movement of the core barrel for coring, and at the same time assists in continuously discharging the generated debris to the ground or the support plate as it rotates. By continuously increasing the number of transmission pressure rods, a deeper core body can be obtained. The corresponding engagement of the transmission sleeve and the connecting transmission block shortens the time spent on deep coring, facilitating rapid assembly. When the connecting block and the wedge block abut against the upper end of the core body, the third motor rotates the transmission pressure rod, driving the fixed sleeve, the connecting block and the wedge block to rotate, and using the wedge structure of the wedge block to push the debris on the top of the core body upward, so that the connecting block abuts against the main top of the core body, thereby eliminating the debris's obstruction to the acquisition of the core body, promoting the tightness of the connection to the core body, and improving the completeness of the acquisition of the core body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0034] Figure 1 It is a side view of the overall structure of the present invention;

[0035] Figure 2 A side view of the internal structure of the coring mechanism of the present invention;

[0036] Figure 3 A partial side view of the internal structure of the coring mechanism of the present invention;

[0037] Figure 4 This is a side view of the overall structure of the first mounting slot of the present invention;

[0038] Figure 5 for Figure 2 A magnified schematic diagram of area A in the middle;

[0039] Figure 6 A side view of the overall structure of the wedge block of the present invention;

[0040] Figure 7 A three-dimensional view of the overall structure of the wedge block of the present invention;

[0041] Figure 8 A three-dimensional view of the second motor, the transmission drum, and the second bearing connection structure of the present invention;

[0042] Figure 9This is a three-dimensional view of the slitting knife of the present invention when it is guided by the triangular guide block;

[0043] In the figure: 101, crawler trolley; 102, elevator; 103, coring mechanism; 201, fixed sleeve; 202, first motor; 203, lifting screw; 204, lifting chute; 205, lifting slider; 206, support plate; 207, second motor; 208, transmission drum; 209, coring barrel; 210, limiting rod; 211, first mounting groove; 212, limiting top block; 213, supporting shaft; 214, limiting chute; 215, limiting slide plate; 216, limiting thread Hole; 217, transmission ring plate; 218, first bearing; 219, limit push rod; 220, second bearing; 301, connecting block; 302, wedge block; 303, connecting groove; 304, triangular guide block; 305, second mounting groove; 306, slitting knife; 307, elastic rotating shaft; 308, shielding piece; 309, spiral blade; 401, limit plate; 402, lower pressure plate; 403, third motor; 404, transmission sleeve; 405, transmission pressure rod; 406, connecting transmission block. DETAILED DESCRIPTION

[0044] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0045] See also Figure 1-7As shown: an ice drill coring device for exploration, including a crawler trolley 101, an elevator 102 is installed on the crawler trolley 101, a coring mechanism 103 is installed on the elevator 102, and the coring mechanism 103 includes a fixed sleeve 201, a coring barrel 209 is sleeved on the outer side of the fixed sleeve 201, a limiting rod 210 is embedded on the inner side wall of the coring barrel 209, a first mounting groove 211 is provided on the inner side of the limiting rod 210, a limiting top block 212 is installed in the first mounting groove 211, the limiting top block 212 is hinged to the inner wall of the first mounting groove 211 through a support shaft 213, the support shaft 213 is close to the lower end of the limiting top block 212, and a limiting sliding surface is provided on the side surface of the limiting rod 210 close to the axis of the coring barrel 209 The limiting slide 215 is slidably embedded in the limiting slide 214, and the limiting through-hole 216 is provided on the limiting slide 215. When the embodiment is working, the coring mechanism 103 is used to take core samples in the roadbed of the ice and snow road to be constructed, so as to understand the roadbed information and provide the core body to be studied for various exploration and investigation research work. For example, in the construction of the automobile winter performance test field, it is often necessary to build a variety of ice and snow roads on the lake ice layer. At the same time, there are some corresponding scientific investigations and studies. Therefore, it is necessary to conduct coring research on the ice layer. The crawler trolley 101 mainly moves the elevator 102 and the coring mechanism 103 on the ice surface, and then the elevator 102 moves the coring mechanism 103 downward to perform rotary drilling on the ice layer to obtain the core body. During drilling, the core is obtained by rotating the core barrel 209. During the coring process, after the core is separated from the ice layer, the limiting slide 215 is moved downward to move the limiting through-hole 216 to one side of the limiting top block 212. Before the limiting through-hole 216 moves, the limiting top block 212 maintains a tendency to rotate toward the axial direction of the core barrel 209 due to the shape of the first mounting groove 211 and the position of the supporting shaft 213. As the limiting through-hole 216 moves downward, the front end of the limiting top block 212 rotates and passes through the limiting through-hole 216 and then abuts against the side surface of the core. Then the limiting slide 215 continues to move downward, and the limiting top block 212 is limited by the inner cavity structure of the limiting through-hole 216 and the first mounting groove 211, so that the limiting top block 212 The end of the core body maintains a stable abutment with the core body. When the elevator 102 moves up the coring mechanism 103, the limiting top block 212 forms a clamping structure for the core body, thereby ensuring that as many core bodies as possible are taken out to the ground for research. When on the ground, the limiting slide 215 is moved upward to block the opening of the first mounting groove 211 through the inner wall of the limiting slide 215, and the limiting top block 212 is rotated in the opposite direction and retracted into the first mounting groove 211, thereby keeping the inner wall of the coring barrel 209 unobstructed, so as to facilitate coring again. At the same time, the common abutment limit of the limiting top block 212 can prevent the core body from hanging in the air below during coring, causing the core body to fall off, thereby ensuring the complete acquisition of the core body and preventing the core body from falling into a cavity, underground lake or other difficult-to-collect environment.

[0046] The limiting rods 210 are provided with a plurality of equal angles and are evenly distributed. The first mounting grooves 211 are provided with a plurality of equal distances and are evenly distributed. The limiting through-holes 216 correspond to the first mounting grooves 211 one by one. The top of the fixed sleeve 201 is buried with the first motor 202. The rotating shaft of the first motor 202 is vertically downward. The lower end of the rotating shaft of the first motor 202 is installed with a lifting screw 203. The lifting screw 203 is threadedly sleeved with a lifting slider 205. A lifting slot 204 is provided on the side wall of the fixed sleeve 201. The outer periphery of the fixed sleeve 201 is movably sleeved with a support plate 206 and a second motor 207. The second motor 207 is below the support plate 206 and is fixedly connected to it. The side wall of the lifting slider 205 is provided with a protrusion and the protrusion passes through the lifting slot 204 and is fixedly connected to the support plate 206. The outer periphery of the second motor 207 is installed with a transmission drum 208, and the coring drum 209 is fixedly connected to the transmission drum 208.

[0047] When this embodiment is working, the fixed sleeve 201 is used to keep the coring barrel 209 moving along the axial direction of the fixed sleeve 201 during the coring process, ensuring that the core body taken is as standard cylindrical as possible, ensuring that the coring process is time-saving and labor-saving, avoiding the coring process being time-consuming and labor-intensive due to shaking and deviation, and avoiding irregular changes in the structure of the core body, so as to facilitate continuous, rapid, batch and complete core acquisition;

[0048] The transmission drum 208 is rotated by the second motor 207 to control the rotation speed of the core barrel 209, ensuring that the optimal ice-breaking rate is continuously maintained. The lifting screw 203 is rotated by the first motor 202 to push the lifting slider 205 up and down, thereby pressing the core barrel 209 down through the support plate 206 to further maintain the optimal ice-breaking rate. At the same time, the height of the obtained core can be flexibly adjusted through the flexible adjustment of the lifting screw 203.

[0049] A plurality of limiting push rods 219 are provided below the second motor 207 and around the outer side of the fixed sleeve 201. The telescopic ends of the limiting push rods 219 are commonly mounted with a transmission ring plate 217. A first bearing 218 is mounted on the lower portion of the transmission ring plate 217. The outer ring of the first bearing 218 is connected to each limiting slide plate 215. The top of the transmission drum 208 is rotatably connected to the support plate 206 via a second bearing 220.

[0050] When this embodiment is working, the first bearing 218 is used to avoid interference, so that the limiting slide 215 rotates synchronously with the core barrel 209, and the first bearing 218 moves up and down, and each limiting slide 215 is adjusted to move up and down at the same time, so as to control the rotation and retraction of the limiting top block 212. The limiting push rod 219 runs synchronously, so that the limiting slide 215 can be flexibly adjusted to ensure that the limiting top block 212 is stably abutted against the side of the core body, and the inertia of the core body when being moved upward is used to further make the limiting top block 212 abut against the core body, thereby ensuring that the core body is fully taken out.

[0051] A connecting block 301 is installed at the lower end of the fixed sleeve 201. A plurality of wedge-shaped blocks 302 are fixedly connected to the outer periphery of the connecting block 301. A heating wire is embedded in the wedge-shaped blocks 302, and the power supply line of the heating wire is embedded in the side wall of the fixed sleeve 201.

[0052] When this embodiment is working, the wedge block 302 and the heating wire cooperate with the core barrel 209, and the heat of the heating wire is used to melt the top surface of the ice layer waiting for coring, so that the lower surface of the wedge block 302 and the connecting block 301 are embedded in the ice layer. Then the electric heating is stopped, so that the wedge block 302 forms a limiting component to ensure the stable state of the fixed sleeve 201 and improve the stability of the rotation process of the core barrel 209. When the core barrel 209 stops rotating, the melted ice water refreezes with the coldness of the ice layer itself and is frozen and fixed to the wedge block 302, thereby further making the acquisition of the core more secure, so as to facilitate the lifting and acquisition of the core, and the retrieval process is simple and efficient.

[0053] The cross section of the wedge block 302 is triangular. The lower surface of the wedge block 302 is located in the same plane as the lower surface of the connecting block 301 and remains horizontal. The lower surface of the wedge block 302 is provided with a plurality of connecting grooves 303 arranged side by side.

[0054] When this embodiment is working, the connection complexity with the ice surface is increased by connecting the groove 303, so that the fixed sleeve 201 is further tightly connected to the core through the wedge block 302, and it is mainly used to deal with core materials with sub-zero temperatures and high water content.

[0055] A triangular guide block 304 is mounted on the upper portion of the wedge block 302. The triangular guide block 304 is fixedly connected to the fixed sleeve 201. A second mounting groove 305 is formed on the lower portion of the side wall of the core removal barrel 209. A slitting knife 306 is mounted in the second mounting groove 305. One end of the slitting knife 306 is elastically hinged to the second mounting groove 305 via an elastic shaft 307. A shielding piece 308 is mounted on the outer side of the second mounting groove 305 and on the other end close to the slitting knife 306.

[0056] When this embodiment is working, the tip of the slitting knife 306 is always in a tendency to approach the fixed sleeve 201 through the elastic rotating shaft 307, and then it is first connected to the upper end of the core body through the wedge block 302 and the connecting block 301, and then the core-taking barrel 209 rotates and moves downward to perform the coring work. When moving, the slitting knife 306 is first guided by the triangular guide block 304 to prevent the slitting knife 306 from being interfered with by the connecting block 301. When the coring work is completed, the core-taking barrel 209 is rotated in the opposite direction but does not move downward. The tip of the slitting knife 306 maintains pressure on the side of the core body and generates a slitting force under the action of the elastic rotating shaft 307 until the slitting knife 306 completes the slitting and separation of the core body and the material layer, thereby increasing the speed of core acquisition and improving the integrity and beauty of the core body appearance for subsequent research.

[0057] A spiral blade 309 is provided around the outer circumference of the core barrel 209;

[0058] When this embodiment is working, the spiral blade 309 rotates synchronously with the coring barrel 209, promoting the downward movement of the coring barrel 209 to collect the core, and at the same time assisting in continuously discharging the generated debris to the ground or the support plate 206 as it rotates, avoiding the debris from interfering with the coring process and improving the integrity of the core structure.

[0059] A lower pressure plate 402 is installed at the movable end of the elevator 102. A plurality of transmission pressure rods 405 connected end to end are provided between the lower pressure plate 402 and the coring mechanism 103. A limit plate 401 is provided at the lower part of the elevator 102 and directly below the lower pressure plate 402. The transmission pressure rods 405 pass through the limit plate 401, and the outer periphery of the transmission pressure rods 405 slides against the limit plate 401.

[0060] When this embodiment is working, the number of transmission pressure rods 405 is continuously increased to obtain a deeper core body. During acquisition, the lower pressure plate 402 moves up and down reciprocatingly, and a new transmission pressure rod 405 is added after the previous transmission pressure rod 405 moves down, thereby obtaining a deeper core body acquisition capability.

[0061] A third motor 403 is installed at the lower part of the lower pressure plate 402. A transmission sleeve 404 is installed at the lower end of the rotating shaft of the third motor 403 and the lower end of each transmission pressure rod 405. A connecting transmission block 406 is installed at the top of each transmission pressure rod 405 and the top of the fixed sleeve 201. The connecting transmission block 406 is correspondingly engaged with the transmission sleeve 404.

[0062] When this embodiment is working, the corresponding engagement of the transmission sleeve 404 and the connecting transmission block 406 shortens the time consumption for deep coring, facilitates quick assembly, and when the connecting block 301 and the wedge block 302 abut against the upper end of the core body, the third motor 403 rotates the transmission pressure rod 405, driving the fixed sleeve 201, the connecting block 301 and the wedge block 302 to rotate, and the wedge structure of the wedge block 302 is used to push the debris on the top of the core body upward, so that the connecting block 301 abuts against the main body top of the core body, thereby eliminating the debris's obstruction to the acquisition of the core body and improving the acquisition integrity of the core body.

[0063] A method for operating an ice drill coring device for exploration comprises the following steps:

[0064] Step 1: The crawler trolley 101 moves the elevator 102 and the coring mechanism 103 on the ice surface, and then the elevator 102 moves the coring mechanism 103 downward to rotate and drill the ice layer to obtain a core;

[0065] Step 2: When the connecting block 301 and the wedge block 302 are in contact with the upper end of the core, the third motor 403 rotates the transmission pressure rod 405, driving the fixed sleeve 201, the connecting block 301 and the wedge block 302 to rotate, and the wedge structure of the wedge block 302 is used to push the debris on the top of the core to move upward, so that the connecting block 301 is in contact with the top of the main body of the core, and the wedge block 302 and the heating wire cooperate with the core barrel 209 to use the heat of the heating wire to melt the top surface of the ice layer waiting for coring, so that the wedge block 302 and the connecting block The lower surface of the block 301 is embedded in the ice layer, and then the electric heating is stopped, thereby forming a limiting component through the wedge block 302 to ensure the stable state of the fixed sleeve 201. When the coring barrel 209 stops rotating, the melted ice water refreezes with the coldness of the ice layer itself and is frozen and fixed to the wedge block 302. The connection with the ice layer surface is complicated by the connection groove 303. The transmission drum 208 is rotated by the second motor 207 to control the rotation speed of the coring barrel 209. The core is obtained by rotating the coring barrel 209.

[0066] Step 3: After the core is separated from the ice layer, the first bearing 218 is used to prevent the limiting slide 215 from interfering with the rotation of the core barrel 209, and the first bearing 218 is moved up and down, and each limiting slide 215 is adjusted to move up and down at the same time, and the limiting through-hole 216 is moved to one side of the limiting top block 212. Before the limiting through-hole 216 moves, the limiting top block 212 maintains a tendency to rotate toward the axial direction of the core barrel 209 through the shape of the first mounting groove 211 and the position of the supporting shaft 213. As the limiting through-hole 216 moves downward, the front end of the limiting top block 212 rotates and passes through the limiting through-hole 216. 6 Then it abuts against the side of the core body, and then the limiting slide 215 continues to move downward, and the limiting top block 212 is limited by the limiting through-hole 216 and the inner cavity structure of the first installation groove 211, so that the end of the limiting top block 212 maintains a stable abutment with the core body. When the elevator 102 moves the coring mechanism 103 upward, the limiting top block 212 forms a clamping structure with the core body. When it is on the ground, the limiting slide 215 is moved upward, and the opening of the first installation groove 211 is blocked by the inner wall of the limiting slide 215, and the limiting top block 212 is reversely rotated and retracted into the first installation groove 211, thereby keeping the inner wall of the core barrel 209 unobstructed.

[0067] Step 4: The lifting screw 203 is rotated by the first motor 202 to push the lifting slider 205 up and down, thereby pressing the core barrel 209 down through the support plate 206, and the core barrel 209 is kept moving along the axial direction of the fixed sleeve 201 during the coring process through the fixed sleeve 201, further maintaining the optimal ice breaking rate. At the same time, the height of the obtained core body can be flexibly adjusted through the flexible adjustment of the lifting screw 203; when the acquisition is completed, the tip of the slitting knife 306 is always kept close to the fixed sleeve 201 through the elastic rotating shaft 307. , then first connect it to the upper end of the core body through the wedge block 302 and the connecting block 301, and then the core-taking cylinder 209 rotates and moves downward to perform the coring work. When moving, the slitting knife 306 is first guided by the triangular guide block 304 to prevent the slitting knife 306 from being interfered with by the connecting block 301. When the coring work is completed, the core-taking cylinder 209 is rotated in the opposite direction but does not move downward. The tip of the slitting knife 306 maintains pressure on the side of the core body under the action of the elastic rotating shaft 307 and generates a slitting force until the slitting knife 306 completes the slitting and separation of the core body and the material layer.

[0068] When the lifting mechanism 103 is lifted up, the limiting top block 212 forms a clamping structure on the core body, thereby ensuring that as many core bodies as possible are taken out to the ground;

[0069] During operation, the wedge block 302 and the heating wire cooperate with the core barrel 209, and the heat of the heating wire is used to melt the top surface of the ice layer to be cored first, so that the wedge block 302 and the lower surface of the connecting block 301 are embedded in the ice layer. Then the electric heating is stopped, so that the wedge block 302 forms a limiting component to ensure the stable state of the fixed sleeve 201 and improve the stability of the rotation process of the core barrel 209. When the core barrel 209 stops rotating, the melted ice water refreezes with the coldness of the ice layer itself and is frozen and fixed to the wedge block 302, thereby further making the acquisition of the core more secure, so as to facilitate the lifting and acquisition of the core, and the taking and placing process is simple and efficient. The connection complexity with the ice layer surface is increased by the connecting groove 303, so that the fixed sleeve 201 is further tightly connected to the core through the wedge block 302;

[0070] During operation, the first bearing 218 is used to prevent the limiting slide plate 215 from interfering with the core barrel 209 and to adjust the upper and lower movements of the first bearing 218 at the same time so as to control the rotation and retraction of the limiting top block 212. The limiting push rod 219 is used to operate synchronously so that the limiting slide plate 215 can be flexibly adjusted to ensure that the limiting top block 212 is stably abutted against the side of the core body and the inertia of the core body when being moved upward is further used to abut against the limiting top block 212, thereby ensuring that the core body is fully taken out and the common abutment and limitation of the limiting top block 212 prevents the core body from hanging in the air and falling off during coring, thereby ensuring the complete acquisition of the core body and preventing the core body from falling into an environment that is difficult to collect, such as a cavity or an underground lake.

[0071] When moving, the slitting knife 306 is first guided by the triangular guide block 304 to prevent the slitting knife 306 from being interfered with by the connecting block 301. When the coring work is completed, the coring barrel 209 is rotated in the opposite direction but does not move downward. The tip of the slitting knife 306 maintains pressure on the side of the core body under the action of the elastic shaft 307 and generates a slitting force until the slitting knife 306 completes the slitting and separation of the core body and the material layer, thereby improving the speed of core acquisition and improving the integrity and aesthetics of the core body appearance for subsequent research.

[0072] The spiral blade 309 rotates synchronously with the core barrel 209 to promote the downward movement of the core barrel 209 for coring, and at the same time assists in continuously discharging the generated debris to the ground or the support plate 206 as it rotates. By continuously increasing the number of transmission pressure rods 405, a deeper core body can be obtained. The corresponding engagement of the transmission sleeve 404 and the connecting transmission block 406 shortens the time for deep coring, facilitating rapid assembly. When the connecting block 301 and the wedge block 302 abut against the upper end of the core body, the third motor 403 rotates the transmission pressure rod 405, driving the fixed sleeve 201, the connecting block 301 and the wedge block 302 to rotate, and utilizing the wedge structure of the wedge block 302 to push the debris on the top of the core body upward, so that the connecting block 301 abuts against the main body top of the core body, thereby eliminating the debris's obstruction to the acquisition of the core body, promoting the tightness of the connection to the core body, and improving the completeness of the acquisition of the core body.

[0073] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An ice drill coring device for exploration, characterized in that: The invention comprises a crawler trolley (101), wherein an elevator (102) is installed on the crawler trolley (101), and a coring mechanism (103) is installed on the elevator (102). The coring mechanism (103) comprises a fixed sleeve (201), a coring tube (209) is sleeved on the outer side of the fixed sleeve (201), a limiting rod (210) is embedded on the inner side wall of the coring tube (209), and a first mounting groove (211) is opened on the inner side of the limiting rod (210). The first mounting groove (211) is provided on the inner side of the limiting rod (210). 1) A limiting top block (212) is installed inside, the limiting top block (212) is hinged to the inner wall of the first installation groove (211) through a supporting shaft (213), the supporting shaft (213) is close to the lower end of the limiting top block (212), a limiting slide groove (214) is provided on the side surface of the limiting rod (210) close to the axis of the core barrel (209), a limiting slide plate (215) is slidably embedded in the limiting slide groove (214), and a limiting through hole (216) is provided on the limiting slide plate (215); The limiting rods (210) are provided in a plurality and are evenly distributed at equal angles. The first installation slots (211) are provided in a plurality and are evenly distributed at equal distances. The limiting through-holes (216) correspond to the first installation slots (211) in a one-to-one manner. A first motor (202) is embedded in the top of the fixed sleeve (201). The rotating shaft of the first motor (202) is vertically downward. A lifting screw (203) is installed at the lower end of the rotating shaft of the first motor (202). A lifting slider (205) is provided on the threaded sleeve of the lifting screw (203). The fixed sleeve A lifting chute (204) is provided on the side wall of (201), a support plate (206) and a second motor (207) are movably sleeved on the periphery of the fixed sleeve (201), the second motor (207) is below the support plate (206) and is fixedly connected thereto, a protrusion is provided on the side wall of the lifting slider (205), and the protrusion passes through the lifting chute (204) and is fixedly connected to the support plate (206), a transmission drum (208) is installed on the periphery of the second motor (207), and a core taking drum (209) is fixedly connected to the transmission drum (208); A plurality of limiting push rods (219) are provided below the second motor (207) and around the outer side of the fixed sleeve (201). The telescopic ends of the limiting push rods (219) are jointly mounted with a transmission ring plate (217). A first bearing (218) is mounted on the lower portion of the transmission ring plate (217). The outer ring of the first bearing (218) is connected to each limiting slide plate (215). The top of the transmission rotating drum (208) is rotatably connected to the support plate (206) via the second bearing (220). A connecting block (301) is installed at the lower end of the fixed sleeve (201), and a plurality of wedge-shaped blocks (302) are fixedly connected to the outer periphery of the connecting block (301). A heating wire is embedded in the wedge-shaped block (302), and a power supply line of the heating wire is embedded in the side wall of the fixed sleeve (201); The cross section of the wedge block (302) is triangular in structure. The lower surface of the wedge block (302) and the lower surface of the connecting block (301) are located in the same plane and remain horizontal. The lower surface of the wedge block (302) is provided with a plurality of connecting grooves (303) arranged side by side.

2. The ice drilling and coring equipment for exploration according to claim 1, characterized in that: A triangular guide block (304) is installed on the upper part of the wedge block (302), and the triangular guide block (304) is fixedly connected to the fixed sleeve (201). A second installation groove (305) is opened at the lower part of the side wall of the core removal cylinder (209), and a slitting knife (306) is installed in the second installation groove (305). One end of the slitting knife (306) is elastically hinged to the second installation groove (305) through an elastic rotating shaft (307), and a shielding piece (308) is installed on the outside of the second installation groove (305) and the other end close to the slitting knife (306).

3. The ice drilling and coring equipment for exploration according to claim 1, characterized in that: A spiral blade (309) is provided around the outer circumference of the core removal barrel (209).

4. The ice drilling and coring equipment for exploration according to claim 1, characterized in that: A lower pressure plate (402) is installed at the movable end of the elevator (102), and a plurality of transmission pressure rods (405) connected end to end are provided between the lower pressure plate (402) and the coring mechanism (103). A limit plate (401) is provided at the lower part of the elevator (102) and directly below the lower pressure plate (402). The transmission pressure rod (405) passes through the limit plate (401), and the outer periphery of the transmission pressure rod (405) is in sliding contact with the limit plate (401).

5. The ice drilling and coring equipment for exploration according to claim 4, characterized in that: A third motor (403) is installed at the lower portion of the lower pressure plate (402), a transmission sleeve (404) is installed at the lower end of the rotating shaft of the third motor (403) and the lower end of each transmission pressure rod (405), and a connecting transmission block (406) is installed at the top end of each transmission pressure rod (405) and the top end of the fixed sleeve (201), and the connecting transmission block (406) is correspondingly engaged with the transmission sleeve (404).

6. A method for operating an ice drill coring device for exploration, applied to the ice drill coring device for exploration as claimed in claim 5, characterized in that: The following steps are involved: Step 1: Using a crawler trolley (101), the elevator (102) and the coring mechanism (103) are moved on the ice surface, and then the elevator (102) moves the coring mechanism (103) downward to rotate and drill the ice layer to obtain a core; Step 2: The transmission drum (208) is rotated by the second motor (207), thereby controlling the rotation speed of the coring drum (209), and obtaining a core by rotating the coring drum (209); Step 3: After the core is separated from the ice layer, the limiting slide plate (215) is moved downward, and the front end of the limiting top block (212) rotates and passes through the limiting through-hole (216) and then abuts against the side surface of the core, forming a clamping structure for the core. When on the ground, the limiting slide plate (215) is moved upward, and the limiting top block (212) is rotated in the opposite direction and retracted into the first installation groove (211); Step 4: The first motor (202) rotates the lifting screw (203) to press down the core barrel (209), thereby further maintaining the optimal ice breaking rate. At the same time, the height of the obtained core can be flexibly adjusted through the flexible adjustment of the lifting screw (203).

Images