Assembled automatic sampling drilling tool for frozen soil layer exploration

Abstract

The invention discloses an assembly type automatic sampling drilling tool for frozen soil exploration, and relates to the technical field of sampling, the assembly type automatic sampling drilling tool comprises a drilling pipe and a sampling pipe, the front end of the drilling pipe is provided with a plurality of accommodating holes, the interiors of the accommodating holes are movably connected with drilling tools, the inner side of the drilling pipe is movably connected with a plurality of cutters through a rotating shaft, and the cutters and the drilling tools are distributed in a circular array; a driving assembly is arranged in the drilling pipe, and one end of the driving assembly is movably connected with the drilling tool. According to the drill pipe, the driving assembly is arranged, a top plate is fixedly connected with a first driving rod, and a side plate is fixedly connected with a second driving rod, so that connection between rotation of a cutter and movement of a drilling tool is established, unfolding of the cutter and storage of the drilling tool are achieved at the same time, and therefore switching of the drill pipe among different functions is achieved; therefore, the sampling and drilling process and the sample soil cutting process are more independent, and single operation is smoother.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, in particular to an assembled automatic sampling drill tool for permafrost exploration. Background Art

[0002] Permafrost exploration is a key link in geological surveys and resource development, especially in cold regions such as the frigid, subarctic and alpine zones, where the soil and rocks are frozen for a long time under low temperature conditions, forming a special permafrost structure. The characteristics of permafrost and the geological information it contains are vital to understanding regional geological history, assessing engineering geological conditions, detecting underground resources and monitoring global climate change. Traditional permafrost exploration technology involves using drilling equipment to penetrate the permafrost to obtain soil and rock samples, which are then used for laboratory analysis to determine their physical, chemical and mechanical properties.

[0003] For example, the invention with the announcement number CN114991674B discloses a fast-assembly automatic sampling drill for permafrost exploration, including a fixed diverter, a flow guide tube, a coring tube and a drill bit, wherein the fixed diverter is connected to the drill bit through the flow guide tube and the coring tube, the flow guide tube and the coring tube are assembled between the fixed diverter and the drill bit, the two ends of the flow guide tube are respectively connected to the fixed diverter and the main flow channel in the drill bit, the hot water in the fixed diverter can be transported to the drill bit through the flow guide tube and sprayed from the nozzle opened on the drill bit for drilling and coring operations, the inlet of the coring tube is connected to the coring channel in the middle inner cavity of the drill bit, and the core sample drilled by the drill bit is taken out through the coring tube. Beneficial effects: It solves the problems of failure of the breaker function in the existing rotary drilling method and the complexity of surface recovery of ice cores in the hot melt drilling method. It can automatically change the internal water flow channel to melt the ice core during drilling, and quickly disassemble and obtain the core sample after drilling, effectively saving resources; although the above patent is conducive to the truncation of the bottom of the sample core by increasing the temperature, thereby facilitating the removal of the sample core, but because the exploration location is in the permafrost layer, heating may cause physical or chemical changes in the microorganisms or minerals in the sample soil, thereby affecting the final measurement results; in the field of permafrost exploration, due to the special properties of the permafrost, such as the increase in soil hardness caused by low temperature, the complexity and unevenness of the ice crystal structure, the exploration workers There are many challenges in the operation. These characteristics of the permafrost require that the exploration equipment must have special adaptability and reliability so that it can still operate efficiently under harsh environmental conditions. Usually, the drill pipe is rotated after penetrating the permafrost. When the drill pipe stops rotating, due to the low temperature environment, the soil is easy to adhere to the bottom of the drill pipe and is difficult to clean. In addition, the soil in the permafrost layer is relatively hard. The general soil sample cutting method is not easy to cut off the soil sample, and the interrupter is worn during the drilling process. In addition, after the soil sample enters the interior of the sampling tube, the staff usually needs to knock on the tube wall to take out the soil sample. This method is more troublesome. For this reason, an assembled automatic sampling drill for permafrost exploration is needed to solve the existing deficiencies. Summary of the invention

[0004] The purpose of the present invention is to make up for the shortcomings of the prior art and provide an assembled automatic sampling drill for permafrost exploration. Through the set driving assembly, the connection between the rotation of the cutter and the movement of the drill is established, which is conducive to the simultaneous deployment of the cutter and the storage of the drill, so as to realize the switching of the drill pipe between different functions, so that the sampling drilling process and the sample soil cutting process are more independent and the single operation is smoother; through the set mud scraping assembly, when the drill is stored in the inside of the accommodating hole, the mud on the outside of the drill is scraped off, so that there is no need for manual cleaning, thereby improving the efficiency of drill pipe reuse; through the set reset assembly, assembly and disassembly are convenient, and there is no need to invert the entire drill pipe, which improves the efficiency of sample soil removal and facilitates the next round of sampling work, thereby improving the efficiency of the entire sampling work.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An assembled automatic sampling drill for permafrost exploration comprises a drill pipe and a sampling tube, wherein a plurality of receiving holes are provided at the front end of the drill pipe, and drill bits are movably connected inside the receiving holes, a plurality of cutters are movably connected to the inner side of the drill pipe through a rotating shaft, and the cutters and drill bits are distributed in a circular array, a driving assembly is provided inside the drill pipe, one end of the driving assembly is movably connected to the drill bit, and the other end of the driving assembly is movably connected to the cutter, a mud scraping assembly is provided inside the receiving hole, and the mud scraping assembly is movably connected to both sides of the drill bit, one end of the mud scraping assembly is fixedly connected to one end of the driving assembly, the sampling tube is installed on the inner side of the drill pipe, a reset assembly is fixedly connected to the inner side of the drill pipe, and the reset assembly is connected to the end of the sampling tube.

[0007] The present invention is further configured as follows: the driving assembly includes a driving rod 1, a driving rod 2, a cross block, a connecting block and a control frame, the top end of the driving rod 1 is fixedly connected to the bottom end of the cross block, and the bottom end of the driving rod 1 is fixedly connected to the top end of the control frame, a driving groove 1 is opened on the connecting block, the driving rod 2 movably passes through the driving groove 1, and the driving rod 2 is fixedly connected to the inner side of the control frame, and the bottom ends of the connecting blocks are respectively fixedly connected to the top end of the drill.

[0008] The present invention is further configured such that a second driving groove is provided on the cutter, the first driving rod movably passes through the second driving groove, and the cutter is movably connected between the cross block and the control frame, the second driving groove is arc-shaped, and the first driving groove is inclined.

[0009] The present invention is further configured as follows: the control frame includes a top plate and side plates, the side plates are symmetrically arranged, the top ends of the side plates are fixedly connected to the bottom ends of the top plates, the connecting blocks are movably connected to the opposite sides of the side plates, the second driving rod is fixedly connected to the opposite sides of the side plates, and the top end of the top plate is fixedly connected to the bottom end of the first driving rod.

[0010] The present invention is further configured such that the driving assembly also includes a vertical block, a moving rod and a hydraulic pipe, the vertical block is fixedly connected to one side of the top of the horizontal block, the moving rod is fixedly connected to the side of the vertical block, the hydraulic pipe is fixedly connected to the inner wall of the drill pipe, and one end of the moving rod is movably connected to the inside of the hydraulic pipe.

[0011] The present invention is further configured such that the scraper assembly includes a scraper piece, a traction rope and a side block, the two sides of the connecting block are fixedly connected to the side blocks, and the other ends of the side blocks are fixedly connected to the traction ropes, the bottom ends of the traction ropes are respectively fixedly connected to the ends of the scraper piece, and the drill bit is movably connected to the opposite side of the scraper piece.

[0012] The present invention is further configured such that the scraper includes a scraper blade and a connecting frame, one end of the scraper blade is in conflict with the inclined surface of the drill bit, and the outer side of the scraper blade is fixedly connected to the connecting frame, the connecting frame is sleeved on the outer side of the drill bit, and the end of the connecting frame away from the drill bit is fixedly connected to the bottom end of the traction rope.

[0013] The present invention is further configured such that the sampling tube includes a half tube and a fixed tube, the half tube is symmetrically arranged left and right, and the fixed tube is symmetrically arranged up and down, both ends of the half tube are provided with threads, and the fixed tube is movably connected to the ends of the half tube through threads.

[0014] The present invention is further configured such that the reset assembly includes an insert ring, a reset spring and a gasket, the insert ring is fixedly connected to the inside of the drill pipe, and a slot is formed between the insert ring and the drill pipe, the reset spring is fixedly connected to the inside of the slot, and the top of the reset spring is fixedly connected to the bottom end of the gasket, the bottom end of the half pipe is movably inserted into the inside of the slot, and the bottom end of the half pipe conflicts with the top end of the gasket.

[0015] The present invention is further configured such that a plurality of limit blocks are fixedly connected to the inner side of the slot, and the limit blocks are distributed in a circular array, the top end of the limit block abuts against the bottom end of the gasket, and the limit block is located on the outside of the reset spring, the top end of the drill pipe is threadedly connected to the limit tube, and the bottom end of the limit tube abuts against the top end of the half pipe.

[0016] Compared with the prior art, the assembled automatic sampling drill for frozen soil exploration has the following beneficial effects:

[0017] 1. The present invention establishes a connection between the rotation of the cutter and the movement of the drill bit by setting up a driving assembly, through a fixed connection between the top plate and the driving rod 1, and a fixed connection between the side plate and the driving rod 2, which is conducive to the simultaneous deployment of the cutter and the storage of the drill bit, thereby realizing the switching of the drill pipe between different functions, thereby making the sampling drilling process and the sample soil cutting process more independent, and the single operation is smoother.

[0018] 2. The present invention provides a mud scraper assembly. Since the side block is fixedly connected to the connecting block, when the connecting block moves, the scraper is controlled to move simultaneously under the action of the traction rope. Since the bottom of the drill bit is trapezoidal, the front end of the scraper is always in contact with the inclined surface of the drill bit. Therefore, when the drill bit is stored in the accommodating hole, the mud on the outside of the drill bit is scraped off, thereby eliminating the need for manual cleaning and improving the efficiency of drill pipe reuse.

[0019] 3. The reset component of the present invention is inserted into the interior of the slot through a half-tube, so that the reset spring is squeezed, and the installation of the sampling tube can be quickly completed by using the limiting tube. In addition, when the limiting tube is removed, the sampling tube can be partially popped out under the action of the reset spring, which is convenient for the staff to take out the sampling tube and the sample soil together. The assembly and disassembly are convenient, and there is no need to invert the entire drill pipe, which improves the efficiency of taking out the sample soil and facilitates the next round of sampling work, thereby improving the efficiency of the entire sampling work.

[0020] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the explosion structure of the sampling pipe and the drill pipe of the present invention;

[0023] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the driving assembly and the scraping assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the reset component of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of a single driving assembly and a mud scraping assembly of the present invention;

[0027] Figure 7 It is a schematic diagram of the explosion structure of a single driving assembly and a mud scraping assembly of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the mud scraping assembly of the present invention;

[0029] Fig. 9 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0030] In the figure: 1, drill pipe; 2, sampling tube; 3, receiving hole; 4, drill; 5, cutter; 6, drive assembly; 601, drive rod one; 602, drive rod two; 603, horizontal block; 604, connecting block; 605, control frame; 606, vertical block; 607, moving rod; 608, hydraulic pipe; 7, mud scraper assembly; 701, mud scraper; 702, traction rope; 703, side block; 8, reset assembly; 801, plug ring; 802, reset spring; 803, gasket; 9, drive slot one; 10, drive slot two; 11, top plate; 12, side plate; 13, scraper; 14, connecting frame; 15, half pipe; 16, fixed pipe; 17, slot; 18, limit block; 19, limit pipe. DETAILED DESCRIPTION

[0031] The following will be combined with 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 9 As shown, the present invention provides a technical solution: an assembled automatic sampling drill for permafrost exploration, comprising a drill pipe 1 and a sampling pipe 2, a plurality of receiving holes 3 are provided at the front end of the drill pipe 1, and drill cutters 4 are movably connected inside the receiving holes 3, a plurality of cutters 5 are movably connected to the inner side of the drill pipe 1 through a rotating shaft, and the cutters 5 and the drill cutters 4 are distributed in a circular array, a driving component 6 is provided inside the drill pipe 1, one end of the driving component 6 is movably connected to the drill cutter 4, and the other end of the driving component 6 is movably connected to the cutter 5, a mud scraping component 7 is provided inside the receiving hole 3, and the mud scraping component 7 is movably connected to both sides of the drill cutter 4 The driving assembly 6 can simultaneously control the expansion of the cutter 5 and the storage of the drill bit 4 into the accommodating hole 3, and at the same time control the scraper assembly 7 to scrape the mud on the surface of the drill bit 4 to avoid mud getting stuck in the gap and causing drilling to be unsuccessful. The sampling tube 2 is installed on the inner side of the drill pipe 1. The interior of the drill pipe 1 is fixedly connected with a reset assembly 8, and the reset assembly 8 is connected to the end of the sampling tube 2. Through the reset assembly 8, it is convenient to remove the sampling tube 2 from the interior of the drill pipe 1, so that there is no need to invert the entire drill pipe 1, which improves the convenience of operation.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Fig. 9As shown, the driving assembly 6 includes a driving rod 1 601, a driving rod 2 602, a cross block 603, a connecting block 604 and a control frame 605. The top end of the driving rod 1 601 is fixedly connected to the bottom end of the cross block 603, and the bottom end of the driving rod 1 601 is fixedly connected to the top end of the control frame 605. The connecting block 604 is provided with a driving groove 19, the driving rod 2 602 movably penetrates the driving groove 19, and the driving rod 2 602 is fixedly connected to the inner side of the control frame 605. The bottom end of the connecting block 604 is fixedly connected to the top end of the drill 4, respectively. The cutter 5 is provided with a driving groove 2 10, the driving rod 1 601 movably penetrates the driving groove 2 10, and the cutter 5 is movably connected between the cross block 603 and the control frame 605. The driving groove 2 10 is arc-shaped, and the driving groove 19 is inclined.

[0034] By moving the driving rod 1 601 and the active cooperation between the driving rod 1 601 and the driving groove 2 10, the cutter 5 can be rotated around the rotating shaft, thereby realizing the expansion and storage of the cutter 5. When the cutter 5 is in the storage state, it is beneficial for the sample soil to enter the interior of the sampling tube 2, avoiding the sample soil from damaging the cutter 5. When the cutter 5 is in the expanded state, when the cutter 5 is rotating, it is beneficial to cut off the sample soil, thereby facilitating the removal of the sample soil entering the sampler part.

[0035] By moving the driving rod 2 602 and the active cooperation between the driving rod 2 602 and the driving groove 1 9, the connecting block 604 can be driven to move longitudinally, thereby controlling the drill bit 4 to be stored inside the accommodating hole 3. When the drill bit 4 is stored inside the accommodating hole 3 and the drill pipe 1 rotates, the rock and soil at the bottom of the sampling hole will not continue to rub against the drill bit 4, thereby improving the rotation efficiency of the drill pipe 1 and the cutting knife 5 can be used to quickly complete the cutting of the sample soil.

[0036] like Figure 1 and Figure 7 As shown, the control frame 605 includes a top plate 11 and a side plate 12, the side plates 12 are symmetrically arranged, the top ends of the side plates 12 are fixedly connected to the bottom ends of the top plates 11, the connecting blocks 604 are movably connected to the opposite sides of the side plates 12, the driving rod 2 602 is fixedly connected to the opposite sides of the side plates 12, and the top end of the top plate 11 is fixedly connected to the bottom end of the driving rod 1 601, the driving assembly 6 also includes a vertical block 606, a moving rod 607 and a hydraulic pipe 608, the vertical block 606 is fixedly connected to one side of the top end of the horizontal block 603, the moving rod 607 is fixedly connected to the side of the vertical block 606, the hydraulic pipe 608 is fixedly connected to the inner wall of the drill pipe 1, and one end of the moving rod 607 is movably connected to the inside of the hydraulic pipe 608.

[0037] By fixing the top plate 11 and the driving rod 1 601, and fixing the side plate 12 and the driving rod 2 602, a connection is established between the rotation of the cutter 5 and the movement of the drill 4, which is conducive to the simultaneous deployment of the cutter 5 and the storage of the drill 4, thereby realizing the switching of the drill pipe 1 between different functions, so that the sampling drilling process and the sample soil cutting process are more independent and the single operation is smoother.

[0038] like Figure 1 , Figure 7 and Figure 8 As shown, the scraper assembly 7 includes a scraper piece 701, a traction rope 702 and a side block 703. The side blocks 703 are fixedly connected to both sides of the connecting block 604, and the other ends of the side blocks 703 are fixedly connected to the traction rope 702. The bottom ends of the traction rope 702 are respectively fixedly connected to the ends of the scraper piece 701. The drill bit 4 is movably connected to the opposite side of the scraper piece 701. The scraper piece 701 includes a scraper blade 13 and a connecting frame 14. One end of the scraper blade 13 is in contact with the inclined surface of the drill bit 4, and the outer side of the scraper blade 13 is fixedly connected to the connecting frame 14. The connecting frame 14 is sleeved on the outer side of the drill bit 4, and the end of the connecting frame 14 away from the drill bit 4 is fixedly connected to the bottom end of the traction rope 702.

[0039] Since the side block 703 is fixedly connected to the connecting block 604, when the connecting block 604 moves, the scraper 13 is controlled to move simultaneously under the action of the traction rope 702. Since the bottom of the drill bit 4 is trapezoidal, it is convenient for the front end of the scraper 13 to always keep in contact with the inclined surface of the drill bit 4. Therefore, when the drill bit 4 is stored in the inside of the accommodating hole 3, the soil on the outside of the drill bit 4 is scraped off, thereby eliminating the need for manual cleaning, thereby improving the efficiency of reusing the drill pipe 1.

[0040] like Figure 1 and Figure 2 As shown, the sampling tube 2 includes a half tube 15 and a fixed tube 16. The half tube 15 is symmetrically arranged left and right, and the fixed tube 16 is symmetrically arranged up and down. Both ends of the half tube 15 are provided with threads, and the fixed tube 16 is movably connected to the ends of the half tube 15 through threads.

[0041] The two half-tubes 15 are respectively processed with semicircular thread grooves at the ends, and a complete thread structure is formed after merging, which cooperates with the thread of the fixed tube 16 to achieve quick locking and separation, making it convenient to place the sampling tube 2 as a whole into the interior of the drill pipe 1. At the same time, when the interior of the sampling tube 2 is filled with sample soil, the sample soil can be taken out by only separating the half-tubes 15, and there is no need to knock the sampling tube 2, thereby avoiding the breakage of the sample soil and improving the efficiency of taking out the sample soil.

[0042] like Figure 1 and Figure 5As shown, the reset assembly 8 includes an insert ring 801, a reset spring 802 and a gasket 803. The insert ring 801 is fixedly connected to the inside of the drill pipe 1, and a slot 17 is formed between the insert ring 801 and the drill pipe 1. The reset spring 802 is fixedly connected to the inside of the slot 17, and the top of the reset spring 802 is fixedly connected to the bottom end of the gasket 803. The bottom end of the half pipe 15 is movably inserted into the inside of the slot 17, and the bottom end of the half pipe 15 conflicts with the top end of the gasket 803. A plurality of limit blocks 18 are fixedly connected to the inner side of the slot 17, and the limit blocks 18 are distributed in a circular array, the top end of the limit block 18 conflicts with the bottom end of the gasket 803, and the limit block 18 is located on the outside of the reset spring 802. The top end of the drill pipe 1 is threadedly connected to the limit tube 19, and the bottom end of the limit tube 19 conflicts with the top end of the half pipe 15.

[0043] By inserting the half tube 15 into the interior of the slot 17, the reset spring 802 is squeezed, and the installation of the sampling tube 2 can be quickly completed by using the limiting tube 19. In addition, when the limiting tube 19 is removed, the sampling tube 2 can be partially ejected under the action of the reset spring 802, which is convenient for the staff to take out the sampling tube 2 and the sample soil together. The assembly and disassembly are convenient, and there is no need to invert the entire drill pipe 1, which improves the efficiency of taking out the sample soil and facilitates the next round of sampling work, thereby improving the efficiency of the entire sampling work.

[0044] Working principle: When in use, first, the inlet end of the hydraulic pipe 608 is connected to the outlet end of the hydraulic system, so as to control the flow of oil inside the hydraulic pipe 608; the two symmetrical half-pipes 15 are fitted together to form a complete pipeline, and then the fixing rings are respectively installed to the two ends of the half-pipe 15 through threads to make it a complete sampling tube 2, and then the sampling tube 2 is inserted into the inner side of the drill pipe 1, and the bottom end of the half-pipe 15 is inserted into the inside of the slot 17, pushing the gasket 803 to move downward along the slot 17 until the bottom end of the gasket 803 conflicts with the top of the limit block 18. At this time The sampling tube 2 is installed in place. Finally, the limiting tube 19 is threadedly installed on the top of the drill pipe 1, so that the sampling tube 2 is limited to the inside of the drill pipe 1. Then, the feed mechanism can be used to control the drill pipe 1 to drill the frozen soil layer. As the drill pipe 1 penetrates into the soil, the drill cutter 4 continuously rotates around the axis of the drill pipe 1, so that the sample soil enters the inside of the sampling tube 2 until the required drilling depth is reached. Then, the hydraulic system controls the oil to move inside the hydraulic pipe 608, so that the moving rod 607 moves inside the drill pipe 1, driving the vertical block 606 and the horizontal block 603 to move synchronously. The movable rod 1 601 is movably connected with the driving groove 2 10, so that as the driving rod 1 601 moves, the cutter 5 is pushed to rotate outward until the cutter 5 rotates to the inside of the drill pipe 1, that is, the cutter 5 is in an unfolded state, so that the blade of the cutter 5 cuts into the inside of the sample soil, and the driving rod 1 601 drives the control frame 605 to move synchronously. Since the driving rod 2 602 is movably connected with the driving groove 1 9, the connecting block 604 is lifted upward, so that the drill 4 moves upward and is stored in the accommodating hole 3. In this process, the connecting block 604 moves upward to drive the side block 703 to move synchronously, thereby controlling the traction The rope 702 moves synchronously, thereby pulling the connecting frame 14 to move synchronously, so that the scraper 13 on the opposite side is always in a state of conflict with the inclined surface of the drill cutter 4, thereby scraping off the soil on the surface of the drill cutter 4; when the drill cutter 4 is stored in the accommodating hole 3, the cutter 5 is unfolded, and the drill pipe 1 is controlled to rotate to cut off the sample soil, and the drill pipe 1 is lifted. The bottom of the sample soil can be supported by the cutter 5, and the limit tube 19 is turned open. Under the action of the reset spring 802, the sample soil and the sampling tube 2 are partially bounced upward, which is convenient for the staff to take out the sampling tube 2. Finally, the fixed tube 16 is removed to take out the sample soil.

[0045] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled automatic sampling drill for permafrost exploration, comprising a drill pipe (1) and a sampling pipe (2), characterized in that: The front end of the drill pipe (1) is provided with a plurality of accommodating holes (3), and the interiors of the accommodating holes (3) are all movably connected to drill bits (4). The interior of the drill pipe (1) is movably connected to a plurality of cutters (5) via a rotating shaft, and the cutters (5) and the drill bits (4) are distributed in a circular array. A driving assembly (6) is provided inside the drill pipe (1), one end of the driving assembly (6) is movably connected to the drill bit (4), and the other end of the driving assembly (6) is movably connected to the cutter (5). A mud scraping assembly (7) is provided inside the accommodating hole (3), and the mud scraping assembly (7) is movably connected to both sides of the drill bit (4), and one end of the mud scraping assembly (7) is fixedly connected to one end of the driving assembly (6). The sampling tube (2) is mounted on the inner side of the drill pipe (1), and a reset assembly (8) is fixedly connected to the interior of the drill pipe (1), and the reset assembly (8) is connected to the end of the sampling tube (2).

2. The assembled automatic sampling drill for permafrost exploration according to claim 1 is characterized in that: The driving assembly (6) comprises a driving rod 1 (601), a driving rod 2 (602), a cross block (603), a connecting block (604) and a control frame (605); the top end of the driving rod 1 (601) is fixedly connected to the bottom end of the cross block (603), and the bottom end of the driving rod 1 (601) is fixedly connected to the top end of the control frame (605); a driving groove 1 (9) is provided on the connecting block (604); the driving rod 2 (602) movably passes through the driving groove 1 (9), and the driving rod 2 (602) is fixedly connected to the inner side of the control frame (605); and the bottom end of the connecting block (604) is fixedly connected to the top end of the drill bit (4).

3. The assembled automatic sampling drill for permafrost exploration according to claim 2 is characterized in that: The cutter (5) is provided with a second driving groove (10), the first driving rod (601) movably passes through the second driving groove (10), and the cutter (5) is movably connected between the horizontal block (603) and the control frame (605), the second driving groove (10) is arc-shaped, and the first driving groove (9) is inclined.

4. The assembled automatic sampling drill for permafrost exploration according to claim 2 is characterized in that: The control frame (605) comprises a top plate (11) and a side plate (12), wherein the side plates (12) are symmetrically arranged, the top ends of the side plates (12) are fixedly connected to the bottom ends of the top plates (11), the connecting blocks (604) are movably connected to the opposite sides of the side plates (12), the second driving rod (602) is fixedly connected to the opposite sides of the side plates (12), and the top end of the top plate (11) is fixedly connected to the bottom end of the first driving rod (601).

5. The assembled automatic sampling drill for permafrost exploration according to claim 2 is characterized in that: The driving assembly (6) further comprises a vertical block (606), a moving rod (607) and a hydraulic pipe (608), wherein the vertical block (606) is fixedly connected to one side of the top end of the horizontal block (603), the moving rod (607) is fixedly connected to the side of the vertical block (606), the hydraulic pipe (608) is fixedly connected to the inner wall of the drill pipe (1), and one end of the moving rod (607) is movably connected to the inside of the hydraulic pipe (608).

6. The assembled automatic sampling drill for permafrost exploration according to claim 1, characterized in that: The mud scraping assembly (7) comprises a mud scraping piece (701), a traction rope (702) and an edge block (703); both sides of the connection block (604) are fixedly connected to the edge blocks (703), and the other ends of the edge blocks (703) are fixedly connected to the traction rope (702); the bottom ends of the traction ropes (702) are respectively fixedly connected to the ends of the mud scraping piece (701); and the drill bit (4) is movably connected to the opposite side of the mud scraping piece (701).

7. The assembled automatic sampling drill for permafrost exploration according to claim 6 is characterized in that: The scraper (701) comprises a scraper blade (13) and a connecting frame (14); one end of the scraper blade (13) contacts the inclined surface of the drill bit (4); the outer side of the scraper blade (13) is fixedly connected to the connecting frame (14); the connecting frame (14) is sleeved on the outer side of the drill bit (4); and one end of the connecting frame (14) away from the drill bit (4) is fixedly connected to the bottom end of the traction rope (702).

8. The assembled automatic sampling drill for frozen soil exploration according to claim 1 is characterized in that: The sampling tube (2) comprises a half tube (15) and a fixed tube (16); the half tube (15) is arranged symmetrically in left and right directions, and the fixed tube (16) is arranged symmetrically in top and bottom directions; both ends of the half tube (15) are provided with threads, and the fixed tube (16) is movably connected to the ends of the half tube (15) via the threads.

9. The assembled automatic sampling drill for frozen soil exploration according to claim 8, characterized in that: The reset assembly (8) comprises an insert ring (801), a reset spring (802) and a gasket (803); the insert ring (801) is fixedly connected to the inside of the drill pipe (1), and a slot (17) is formed between the insert ring (801) and the drill pipe (1); the reset spring (802) is fixedly connected to the inside of the slot (17), and the top end of the reset spring (802) is fixedly connected to the bottom end of the gasket (803); the bottom end of the half pipe (15) is movably inserted into the inside of the slot (17), and the bottom end of the half pipe (15) abuts against the top end of the gasket (803).

10. The assembled automatic sampling drill for permafrost exploration according to claim 9, characterized in that: A plurality of limit blocks (18) are fixedly connected to the inner side of the slot (17), and the limit blocks (18) are distributed in a circular array, the top end of the limit block (18) abuts against the bottom end of the gasket (803), and the limit block (18) is located outside the return spring (802), the top end of the drill pipe (1) is threadedly connected to the limit tube (19), and the bottom end of the limit tube (19) abuts against the top end of the half pipe (15).

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