A geological exploration sampling device

Abstract

The present invention discloses a geological prospecting sampling device, which belongs to the field of geological prospecting technology. The technical solution is as follows: the device comprises a sampling tube arranged on a crawler vehicle frame, a rotating mechanism for driving the sampling tube to rotate, and a motion mechanism for driving the sampling tube and the rotating mechanism to move up and down; the sampling tube comprises an annular knife, a top connecting tube, and an intermediate tube; the intermediate tube comprises an outer tube, an inner tube, and a partition; an upper ring plate is arranged on the upper portion of the outer tube, an annular channel is formed between the upper ring plate and the outer tube, the partition is formed by splicing two semicircular plates, an ear plate is arranged on the outer wall of the inner tube, a connecting rod is arranged on the outer wall of the semicircular plate, the connecting rod is arranged on the ear plate via a connecting shaft, and an inner and outer annular connecting plates inserted into the annular channel are fixedly arranged on the lower end surface of the outer tube; the top connecting tube comprises an inner connecting tube and an outer connecting tube, the tops of the inner connecting tube and the outer connecting tube are sealed by a circular plate; a refrigerated gas inlet is arranged on the circular plate. The beneficial effects of the present invention are as follows: a geological prospecting sampling device is provided.

Description

Technical Field

[0001] The invention belongs to the technical field of geological exploration, and in particular relates to a geological exploration sampling device. Background Art

[0002] During geological exploration, when sampling loose strata, saturated sand layers, silt, soft rock, or fragmented strata, existing sampling devices can easily cause sample fragmentation, making it difficult to maintain the original structure. This can distort the sample and affect detection accuracy. Therefore, a geological exploration sampling device was designed that uses cold air to freeze the sample during the sampling process, ensuring the integrity of the sample's morphology. Summary of the Invention

[0003] The purpose of the present invention is to provide a geological prospecting sampling device.

[0004] The present invention is achieved by the following measures: a geological prospecting sampling device, characterized by comprising a crawler vehicle, a sampling barrel arranged on a crawler vehicle frame, a rotating mechanism for driving the sampling barrel to rotate, and a reciprocating mechanism for driving the sampling barrel and the rotating mechanism to move up and down;

[0005] The sampling tube includes a bottom annular knife, a top connecting tube, and a plurality of intermediate tubes arranged between the annular knife and the connecting tube;

[0006] The intermediate cylinder comprises an outer cylinder, an inner cylinder, and a partition plate that blocks the opening at the upper end of the inner cylinder, which are arranged concentrically; an upper ring plate is concentrically arranged on the inner side of the upper part of the outer cylinder, an annular channel is formed between the upper ring plate and the outer cylinder, the upper ring plate is fixedly connected to the inner cylinder and the outer cylinder, the partition plate is formed by splicing two semicircular plates, the outer wall of the inner cylinder is symmetrically provided with ear plates, a connecting rod is fixedly provided on the outer wall of the semicircular plate, the connecting rod is rotatably provided on the ear plate through a connecting shaft, a motor that drives the connecting shaft to rotate is fixedly provided on the outer wall of the inner cylinder, and the two motors rotate to drive the two semicircular plates to achieve the blocking and complete opening of the inner cylinder;

[0007] When the two semicircular plates are fully opened, the semicircular plates are located between the upper ring plate and the inner cylinder;

[0008] The lower end surface of the outer cylinder is fixedly provided with inner and outer annular connecting plates inserted into the annular channel, and the outer wall of the inner annular connecting plate and the inner wall of the outer annular connecting plate are respectively in contact with the inner wall of the annular channel;

[0009] For two adjacent intermediate cylinders, the annular connecting plate of the upper intermediate cylinder is inserted into the annular channel of the lower intermediate cylinder;

[0010] The top connecting tube includes an inner connecting tube of the same size as the inner tube and an outer connecting tube of the same size as the outer tube. The tops of the inner and outer connecting tubes are sealed by a circular plate. The lower end surface of the outer connecting tube is fixedly provided with inner and outer annular connecting plates inserted into the annular channel.

[0011] At least one refrigeration gas inlet is provided on the circular plate.

[0012] Cryogenic gas is injected through the top and diffuses along the annular channel into the intermediate tubes of each layer, rapidly solidifying the sample in situ and preserving the original structure of the stratum. Semicircular plates, driven by a motor, open and close to isolate and seal the sample even when it is relatively loose, achieving segmented sealing of the sample.

[0013] Furthermore, an annular baffle is fixedly provided on the upper end of the annular knife, and an annular boss is concentrically provided on the annular baffle. The inner diameter of the annular boss is the same as the inner diameter of the inner cylinder. The lower end of the inner cylinder on the intermediate cylinder adjacent to the annular knife rests on the annular boss and the inner and outer annular connecting plates rest on the annular baffle.

[0014] Furthermore, a gap is defined between adjacent inner cylinders to allow passage of the semicircular plate, and the gap is sealed by a removable elastic member. This removable elastic member seals the gap, allowing the semicircular plate to pass freely while maintaining airtightness between the cylinders, preventing sample leakage. An annular groove is provided at the lower end of the inner cylinder to accommodate the elastic member. The lower portion of the elastic member protrudes from the annular groove and seals the gap.

[0015] Furthermore, the upper portions of the inner and outer annular connecting plates at the lower portion of the outer connecting cylinder are sealed by an annular sealing plate, and an air pipe is provided on the refrigerant gas inlet, the lower end of the air pipe passes through the annular sealing plate and enters the adjacent annular channel. The upper end of the air pipe is connected to a high-pressure air pump.

[0016] Furthermore, the frame includes two symmetrically arranged side carriers, one end of each side carrier is rotatably provided with a driving wheel, and the other end is rotatably provided with a driven wheel, and the driving wheel and the driven wheel on the same side are driven by a crawler belt, and the driving motor of the driving wheel is located outside the crawler belt;

[0017] The two side carriers are fixedly connected by a crossbeam, the crossbeam is close to the driven wheel, fixed columns are symmetrically arranged on the crossbeam, a rotating seat is rotatably arranged between the two fixed columns, the rotating seat includes a limiting ring sleeved on the outside of the sampling cylinder, an extension rod is fixedly arranged on the outer wall of the limiting ring, the extension rod is rotatably arranged on the fixed column through a hinge shaft, and the axis of the hinge shaft is parallel to the axis of the driven wheel;

[0018] The reciprocating mechanism is arranged on the extension rod, the fixed end of the rotating mechanism is arranged on the output end of the reciprocating mechanism, and the output shaft of the rotating mechanism is connected to the top connecting tube and is concentrically arranged;

[0019] It also includes a telescopic rod that drives the rotating seat to swing, a connecting vertical plate facing the side carrier plate is fixedly provided on the outer wall of the limiting ring, the shell of the telescopic rod is hinged on the side carrier plate, the push rod of the telescopic rod is hinged on the connecting vertical plate, and the hinge of the shell is close to the driving wheel.

[0020] Furthermore, the reciprocating motion mechanism includes a hydraulic cylinder provided on the extension rod, and a motor bracket is fixedly provided on the upper end of the hydraulic rod of the hydraulic cylinder;

[0021] The rotating mechanism includes a second motor driving the output shaft. The second motor is fixed on the motor bracket. The axis of the push rod is parallel to the axis of the sampling cylinder.

[0022] Furthermore, a limiting rod facing the connecting vertical plate is fixedly provided on the fixed column, and when the sampling tube is in a vertical state, the connecting vertical plate is in contact with the limiting rod.

[0023] Furthermore, a plurality of support rods are fixedly arranged between the two side carriers, a pad is fixedly arranged on the support rods, and an arc groove is provided on the pad to cooperate with the outer wall of the sampling cylinder. The sampling cylinder is in a horizontal state and is placed in the arc groove.

[0024] Furthermore, the lower end of the annular cutter is evenly distributed with a plurality of serrations along the circumference. The serration structure of the annular cutter reduces the cutting resistance and improves the drilling efficiency.

[0025] Furthermore, the semicircular plate is made of a thin steel plate or a semicircular cutting knife.

[0026] The refrigerated gas can be carbon dioxide or nitrogen. The high-pressure pump for conveying carbon dioxide or nitrogen and the storage tank for storing carbon dioxide or nitrogen all adopt existing technologies and will not be described in detail here.

[0027] The inner and outer annular connecting plates are fixedly connected by a plurality of inner supporting short rods; the outer cylinder and the inner cylinder are fixedly connected by a plurality of inner supporting long rods; the inner connecting cylinder and the outer connecting cylinder are fixedly connected by a plurality of inner supporting long rods.

[0028] The annular channel and the inner and outer annular connecting plates are fixedly connected via threads, and matching threads are provided on the inner wall of the annular channel and the inner and outer annular connecting plates.

[0029] How to use:

[0030] The telescopic rod retracts, leveling the rotating base. The sampling tube rests in the curved groove on the base, and the crawler vehicle moves to the exploration point. The push rod on the telescopic rod extends, rotating the connecting vertical plate around the hinge axis until it contacts the stop rod, placing the sampling tube in the vertical position. A hydraulic cylinder drives the rotating mechanism and the sampling tube downward, causing the annular blade to contact the formation. Motor 2 rotates the sampling tube, causing the annular blade to cut into the formation while the hydraulic cylinder continues to press downward. When the sampling tube reaches the desired depth, the annular blade stops rotating. Motor 1 in each intermediate tube rotates, driving the semicircular plates to close and seal the inner tube (if an elastic member is present, the semicircular plates need to cut through the elastic member to seal the inner tube), isolating the sample in sections. Cryogenic gas is injected through the gas pipe into the annular channel, diffusing between the inner and outer tubes of each intermediate tube, then passing through the inner tube to the sample outside the inner tube, solidifying the sample. After the sample solidifies, a hydraulic cylinder lifts the sampling tube onto the carriage. The push rod on the telescopic rod pushes the connecting plate, rotating it around the hinge axis until the sampling tube rests in the arcuate groove, now in a horizontal position. The threaded annular channel and the inner and outer annular connecting plates are loosened, and the intermediate tube is removed layer by layer. The intermediate tube containing the sample is transported to a low-temperature environment. The motor is activated to open the semicircular plate, allowing the frozen, solidified cylindrical samples to be directly removed and labeled according to the order in which they were installed.

[0031] The beneficial effects of the technical solution provided by the embodiment of the present invention are: freezing gas is transported through the annular channel to achieve sample solidification, solving the problem of easy breakage of samples when sampling loose strata, saturated sand layers, silt, soft rocks, fragmented strata, etc.; the air tightness requirements of the annular channel are met through the combination of a detachable elastomer and a threaded connection; the sample is removed in sections through a semicircular plate, which facilitates later transportation, storage and sample removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings used in the embodiments. Obviously, the drawings listed below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention (the sampling tube is in a horizontal state);

[0034] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present invention (the sampling tube is in a vertical state);

[0035] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0036] Figure 4 It is a structural diagram of the sampling tube;

[0037] Figure 5 It is a structural diagram of the intermediate tube;

[0038] Figure 6 is with Figure 5 Schematic diagram of the structure at different angles;

[0039] Figure 7 This is a schematic diagram of the state where the middle tube is blocked;

[0040] Figure 8 yes Figure 7 A partial enlarged view of point B in the middle;

[0041] Figure 9 This is a schematic diagram of the state where the middle tube is fully open;

[0042] Figure 10 It is a structural diagram of the annular knife;

[0043] Figure 11 It is a schematic diagram of the internal structure of the sampling tube;

[0044] Figure 12 yes Figure 11 A partial enlarged view of point C in the middle;

[0045] Figure 13 yes Figure 11 A partial enlarged view of point D in the middle.

[0046] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Frame; 2. Driving wheel; 3. Driven wheel; 4. Sampling cylinder; 5. Rotating mechanism; 6. Reciprocating mechanism; 7. Telescopic rod; 8. Rotating seat; 10. Air pipe; 101. Side load plate; 102. Crossbeam; 103. Fixed column; 104. Support rod; 105. Pad; 106. Limit rod; 201. Driving motor; 401. Top connecting cylinder; 402. Annular knife; 40201. Annular boss; 40202. Annular baffle; 40203. Sawtooth; 403 , intermediate cylinder; 40301, inner cylinder; 40302, outer cylinder; 40303, ear plate; 40304, upper ring plate; 40305, annular channel; 40306, inner annular connecting plate; 40307, ​​outer annular connecting plate; 40308, annular groove; 40309, semicircular plate; 40310, connecting shaft; 40311, motor 1; 501, output shaft; 601, hydraulic cylinder; 602, hydraulic rod; 701, housing; 702, push rod; 801, limit ring; 802, extension rod; 803, connecting vertical plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0048] See also Figures 1-13 A geological prospecting sampling device, characterized in that it includes a crawler vehicle, a sampling barrel 4 arranged on a crawler vehicle frame 1, a rotating mechanism 5 driving the sampling barrel 4 to rotate, and a reciprocating mechanism 6 driving the sampling barrel 4 and the rotating mechanism 5 to move up and down;

[0049] The sampling cylinder 4 includes a bottom annular knife 402, a top connecting cylinder 401, and several intermediate cylinders arranged between the annular knife 402 and the connecting cylinder;

[0050] The intermediate tube comprises a concentrically arranged outer tube, an inner tube, and a partition that blocks the upper opening of the inner tube. An upper ring plate 40304 is concentrically arranged on the inner side of the upper portion of the outer tube, forming an annular channel 40305 between the upper ring plate 40304 and the outer tube. The upper ring plate 40304 is fixedly connected to the inner and outer tubes. The partition is formed by splicing two semicircular plates 40309. Lug plates 40303 are symmetrically arranged on the outer wall of the inner tube. Connecting rods are fixedly mounted on the outer walls of the semicircular plates 40309. The connecting rods are rotatably mounted on the lug plates 40303 via connecting shafts 40310. A motor 40311 is fixedly mounted on the outer wall of the inner tube to drive the connecting shaft 40310. The two motors 40311 rotate, driving the two semicircular plates 40309 to seal and fully open the inner tube.

[0051] When the two semicircular plates 40309 are fully opened, the semicircular plates 40309 are located between the upper ring plate 40304 and the inner cylinder;

[0052] The lower end surface of the outer cylinder is fixedly provided with inner and outer annular connecting plates 40307 that are inserted into the annular channel 40305. The outer wall of the inner annular connecting plate 40306 and the inner wall of the outer annular connecting plate 40307 are respectively in contact with the inner wall of the annular channel 40305.

[0053] For two adjacent intermediate cylinders, the annular connecting plate of the upper intermediate cylinder is inserted into the annular channel 40305 of the lower intermediate cylinder;

[0054] The top connecting tube 401 includes an inner connecting tube of the same size as the inner tube and an outer connecting tube of the same size as the outer tube. The tops of the inner and outer connecting tubes are sealed by a circular plate. The lower end surface of the outer connecting tube is fixed with an inner and outer annular connecting plate 40307 that is inserted into the annular channel 40305.

[0055] At least one refrigeration gas inlet is provided on the circular plate.

[0056] Cryogenic gas is injected through the top and diffuses along annular channel 40305 to the intermediate cylinders of each layer, rapidly solidifying the sample in situ and preserving the original structure of the stratum. Semicircular plates 40309, composed of partitions, open and close with a motor, allowing for isolation and segmented sealing of the sample even when it is relatively loose.

[0057] An annular baffle 40202 is fixedly provided at the upper end of the annular knife 402, and an annular boss 40201 is concentrically provided on the annular baffle 40202. The inner diameter of the annular boss 40201 is the same as the inner diameter of the inner cylinder. The lower end of the inner cylinder on the intermediate cylinder adjacent to the annular knife 402 rests on the annular boss 40201, and the inner and outer annular connecting plates 40307 rest on the annular baffle 40202.

[0058] A gap is defined between adjacent inner cylinders to allow passage of a semicircular plate 40309, and the gap is sealed by a removable elastic member. This removable elastic member seals the gap, allowing the semicircular plate 40309 to pass freely while maintaining airtightness between the cylinders, preventing sample leakage. An annular groove 40308 for the elastic member is located at the lower end of the inner cylinder. The lower portion of the elastic member protrudes from the annular groove 40308 and seals the middle gap.

[0059] The upper portion of the inner and outer annular connecting plates 40307 at the lower portion of the outer connecting cylinder is sealed by an annular sealing plate. A gas pipe 10 is provided on the refrigerant gas inlet. The lower end of the gas pipe 10 passes through the annular sealing plate and enters the adjacent annular channel 40305. The upper end of the gas pipe 10 is connected to the high-pressure gas pump.

[0060] The vehicle frame 1 includes two symmetrically arranged side carriers 101. One end of each side carrier 101 is rotatably provided with a driving wheel 2, and the other end is rotatably provided with a driven wheel 3. The driving wheel 2 and the driven wheel 3 on the same side are driven by a crawler belt. The driving motor 201 of the driving wheel 2 is located outside the crawler belt.

[0061] The two side carriers 101 are fixedly connected by a crossbeam 102, which is close to the driven wheel 3. Fixed columns 103 are symmetrically arranged on the crossbeam 102. A rotating seat 8 is rotatably arranged between the two fixed columns 103. The rotating seat 8 includes a limiting ring 801 that is sleeved on the outside of the sampling tube 4. An extension rod 802 is fixedly arranged on the outer wall of the limiting ring 801. The extension rod 802 is rotatably arranged on the fixed column 103 through a hinge shaft, and the axis of the hinge shaft is parallel to the axis of the driven wheel 3;

[0062] The reciprocating mechanism 6 is arranged on the extension rod 802, the fixed end of the rotating mechanism 5 is arranged on the output end of the reciprocating mechanism 6, and the output shaft 501 of the rotating mechanism 5 is connected to the top connecting tube 401 and is arranged concentrically;

[0063] It also includes a telescopic rod 7 that drives the rotating seat 8 to swing. A connecting vertical plate 803 facing the side carrier plate 101 is fixedly provided on the outer wall of the limiting ring 801. The shell 701 of the telescopic rod 7 is hinged on the side carrier plate 101, and the push rod 702 of the telescopic rod 7 is hinged on the connecting vertical plate 803. The hinge of the shell 701 is close to the driving wheel.

[0064] The reciprocating mechanism 6 includes a hydraulic cylinder 601 provided on an extension rod 802, and a motor bracket is fixedly provided on the upper end of the hydraulic rod 602 of the hydraulic cylinder 601;

[0065] The rotating mechanism 5 includes a second motor driving the output shaft 501 . The second motor is fixed on a motor bracket. The axis of the push rod 702 is parallel to the axis of the sampling cylinder 4 .

[0066] A limiting rod 106 facing the connecting plate 803 is fixedly provided on the fixed column 103 . When the sampling tube 4 is in a vertical state, the connecting plate 803 and the limiting rod 106 are in contact.

[0067] A plurality of support rods 104 are fixedly provided between the two side carriers 101. A pad 105 is fixedly provided on the support rod 104. The pad 105 is provided with an arc groove that matches the outer wall of the sampling tube 4. The sampling tube 4 is in a horizontal state and is placed in the arc groove.

[0068] The annular cutter 402 has a plurality of serrations evenly distributed around the lower end thereof. The serration structure of the annular cutter 402 reduces the cutting resistance and improves the drilling efficiency.

[0069] Semicircular plate 40309 is made of thin steel plate or with a semicircular cutting knife.

[0070] The refrigerated gas can be carbon dioxide or nitrogen. The high-pressure pump for conveying carbon dioxide or nitrogen and the storage tank for storing carbon dioxide or nitrogen all adopt existing technologies and will not be described in detail here.

[0071] The inner and outer annular connecting plates 40307 are fixedly connected by a number of short inner supporting rods; the outer tube and the inner tube are fixedly connected by a number of long inner supporting rods; and the inner connecting tube and the outer connecting tube are fixedly connected by a number of long inner supporting rods.

[0072] The annular channel 40305 and the inner and outer annular connecting plates 40307 are fixedly connected by threads, and matching threads are provided on the inner wall of the annular channel 40305 and the inner and outer annular connecting plates 40307.

[0073] How to use:

[0074] Telescopic rod 7 retracts, leveling rotating base 8. The sampling tube 4 rests in the arcuate groove on pad 105, and the crawler vehicle advances to the exploration point. Push rod 702 of telescopic rod 7 extends, pushing connecting plate 803 to rotate about the hinge axis until it contacts stop rod 106, placing the sampling tube 4 in a vertical position. Hydraulic cylinder 601 drives rotating mechanism 5 and sampling tube 4 downward, causing annular blade 402 to contact the formation. Motor 2 rotates sampling tube 4, causing annular blade 402 to cut into the formation while hydraulic cylinder 601 continues to press downward. Once sampling tube 4 reaches the desired depth, annular blade 402 stops rotating. Motor 1 40311 of each intermediate tube rotates, driving semicircular plate 40309 to close and seal the inner tube. (If an elastic member is present, semicircular plate 40309 cuts through the elastic member to seal the inner tube, thus isolating the sample segment.) The refrigerated gas is injected into the annular channel 40305 through the air pipe 10, diffuses between the inner and outer tubes of each intermediate tube, and is transmitted through the inner tube to the sample outside the inner tube, thereby solidifying the sample. After the sample is solidified, the hydraulic cylinder 601 lifts the sampling tube 4 to the frame 1, and the push rod 702 of the telescopic rod 7 pushes the connecting vertical plate 803 to reverse around the hinge axis until the sampling tube 4 is placed in the arc groove. At this time, the sampling tube 4 is in a horizontal state. The threaded annular channel 40305 and the inner and outer annular connecting plates 40307 are loosened, and the intermediate tubes are disassembled layer by layer; the intermediate tubes containing the samples are placed in a low-temperature environment for transportation. The motor 1 40311 is started to open the semicircular plate 40309, and the frozen and solidified columnar samples are directly taken out and labeled according to the order of installation.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A geological exploration sampling device, characterized in that: The invention comprises a crawler vehicle, a sampling cylinder arranged on a frame of the crawler vehicle, a rotating mechanism for driving the sampling cylinder to rotate, and a reciprocating mechanism for driving the sampling cylinder and the rotating mechanism to move up and down; The sampling cylinder includes a bottom annular knife, a top connecting cylinder, and several intermediate cylinders arranged between the annular knife and the connecting cylinder; the intermediate cylinder includes a concentrically arranged outer cylinder, an inner cylinder, and a partition plate that blocks the opening at the upper end of the inner cylinder; an upper annular plate is concentrically arranged on the inner side of the upper part of the outer cylinder, and an annular channel is formed between the upper annular plate and the outer cylinder, and the upper annular plate is fixedly connected to the inner cylinder and the outer cylinder, and the partition plate is formed by splicing two semicircular plates, and the outer wall of the inner cylinder is symmetrically provided with ear plates, and a connecting rod is fixedly provided on the outer wall of the semicircular plate, and the connecting rod is rotatably provided on the ear plate through a connecting shaft, and a motor that drives the connecting shaft to rotate is fixedly provided on the outer wall of the inner cylinder. When the two motors rotate, the two semicircular plates are driven to achieve the sealing and complete opening of the inner cylinder; When the two semicircular plates are fully opened, the semicircular plates are located between the upper ring plate and the inner cylinder; The lower end surface of the outer cylinder is fixedly provided with inner and outer annular connecting plates inserted into the annular channel, and the outer wall of the inner annular connecting plate and the inner wall of the outer annular connecting plate are respectively in contact with the inner wall of the annular channel; For two adjacent intermediate cylinders, the annular connecting plate of the upper intermediate cylinder is inserted into the annular channel of the lower intermediate cylinder; The top connecting tube includes an inner connecting tube of the same size as the inner tube and an outer connecting tube of the same size as the outer tube. The tops of the inner and outer connecting tubes are sealed by a circular plate. The lower end surface of the outer connecting tube is fixedly provided with inner and outer annular connecting plates inserted into the annular channel. At least one refrigeration gas inlet is provided on the circular plate; The upper parts of the inner and outer annular connecting plates at the lower part of the external connecting cylinder are sealed by an annular sealing plate. An air pipe is provided on the refrigerant gas inlet. The lower end of the air pipe passes through the annular sealing plate and enters the adjacent annular channel. The frame includes two symmetrically arranged side carriers, one end of each side carrier is rotatably provided with a driving wheel, and the other end is rotatably provided with a driven wheel, and the driving wheel and the driven wheel on the same side are driven by a crawler belt, and the driving motor of the driving wheel is located outside the crawler belt; The two side carriers are fixedly connected by a crossbeam, the crossbeam is close to the driven wheel, fixed columns are symmetrically arranged on the crossbeam, a rotating seat is rotatably arranged between the two fixed columns, the rotating seat includes a limiting ring sleeved on the outside of the sampling cylinder, an extension rod is fixedly arranged on the outer wall of the limiting ring, the extension rod is rotatably arranged on the fixed column through a hinge shaft, and the axis of the hinge shaft is parallel to the axis of the driven wheel; The reciprocating mechanism is arranged on the extension rod, the fixed end of the rotating mechanism is arranged on the output end of the reciprocating mechanism, and the output shaft of the rotating mechanism is connected to the top connecting tube and is concentrically arranged; The swivel base further comprises a telescopic rod for driving the swivel base to swing, a connecting vertical plate facing the side loading plate is fixedly provided on the outer wall of the limiting ring, a housing of the telescopic rod is hinged on the side loading plate, a push rod of the telescopic rod is hinged on the connecting vertical plate, and a hinged portion of the housing is close to the driving wheel; The reciprocating motion mechanism includes a hydraulic cylinder arranged on the extension rod, and a motor bracket is fixedly arranged on the upper end of the hydraulic rod of the hydraulic cylinder; The rotating mechanism includes a second motor driving the output shaft, the second motor is fixed to the motor bracket, and the axis of the push rod is parallel to the axis of the sampling cylinder; A plurality of support rods are fixedly provided between the two side carrier plates, a pad is fixedly provided on the support rods, and an arc-shaped groove is provided on the pad to cooperate with the outer wall of the sampling cylinder. The sampling cylinder is in a horizontal state and is placed in the arc-shaped groove; The hydraulic cylinder drives the rotating mechanism and the sampling tube downward, and the annular knife contacts the formation; the second motor drives the sampling tube to rotate, and the annular knife cuts into the formation, while the hydraulic cylinder continues to press down; when the sampling tube reaches the appropriate position in the formation and the annular knife reaches the target depth, it stops rotating; the first motor of each intermediate tube rotates, driving the semicircular plate to close and seal the inner tube, isolating the sample in sections; the refrigerant gas is injected into the annular channel through the air pipe, diffuses between the inner and outer tubes of each intermediate tube, and is transferred through the inner tube to the sample outside the inner tube, solidifying the sample; After the sample solidification is completed, the hydraulic cylinder lifts the sampling tube to the frame, and the push rod of the telescopic rod pushes the connecting vertical plate to reverse around the hinge axis until the sampling tube is placed in the arc groove and is in a horizontal state. The threaded connection of the annular channel and the inner and outer annular connecting plates is loosened, and the intermediate tube is removed layer by layer. An annular baffle is fixedly provided on the upper end of the annular knife, and an annular boss is concentrically provided on the annular baffle. The inner diameter of the annular boss is the same as the inner diameter of the inner cylinder. The lower end of the inner cylinder on the intermediate cylinder adjacent to the annular knife abuts against the annular boss, and the inner and outer annular connecting plates abut against the annular baffle. There is a gap between two adjacent inner cylinders for allowing the semicircular plate to pass through, and the gap is sealed by a detachable elastic body.

2. The geological exploration sampling device according to claim 1, characterized in that: A limiting rod facing the connecting vertical plate is fixedly provided on the fixed column. When the sampling cylinder is in a vertical state, the connecting vertical plate is in contact with the limiting rod.

3. The geological prospecting sampling device according to claim 1, characterized in that: The lower end of the annular knife is evenly distributed with a plurality of saw teeth in the circumferential direction.

4. The geological prospecting sampling device according to claim 1, characterized in that: The refrigeration gas is carbon dioxide or nitrogen.

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