Geological exploration sampling device

Abstract

The invention discloses a geological exploration sampling device, which belongs to the technical field of geological exploration, and adopts the technical scheme that the geological exploration sampling device comprises a sampling barrel arranged on a crawler frame, a rotating mechanism for driving the sampling barrel to rotate, and a moving mechanism for driving the sampling barrel and the rotating mechanism to move up and down; the sampling barrel comprises an annular cutter, a top connecting barrel and a middle barrel; the middle cylinder comprises an outer cylinder, an inner cylinder and a partition plate; an upper annular plate is arranged on the upper portion of the outer cylinder, an annular channel is formed between the upper annular plate and the outer cylinder, the partition plate is formed by splicing two semicircular plates, lug plates are arranged on the outer wall of the inner cylinder, connecting rods are arranged on the outer walls of the semicircular plates and arranged on the lug plates through connecting shafts, and inner and outer annular connecting plates inserted into the annular channel are fixedly arranged on the lower end face of the outer cylinder. The top connecting cylinder comprises an inner connecting cylinder and an outer connecting cylinder, and the tops of the inner connecting cylinder and the outer connecting cylinder are sealed through a circular plate; a frozen gas inlet is formed in the circular plate. The geological exploration sampling device has the beneficial effect that the geological exploration sampling device is provided.

Description

Technical Field

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

[0002] During geological exploration, when sampling loose strata, water-saturated sand strata, silt, soft rock, fragmented strata, etc., existing sampling devices are prone to causing sample fragmentation and difficult to maintain the original structure. This will cause sample distortion and affect the accuracy of detection. Therefore, a geological exploration sampling device is designed to freeze the sample during the sampling process by cold air to ensure the integrity of the sample form. Summary of the Invention

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

[0004] The present invention is achieved by the following measures: A geological exploration sampling device, characterized in that it includes a crawler vehicle, a sampling cylinder arranged on the frame of the crawler vehicle, a rotating mechanism for driving the sampling cylinder to rotate, and a reciprocating motion 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 connection cylinder, and a plurality of intermediate cylinders arranged between the annular knife and the connection cylinder; The intermediate cylinder includes an outer cylinder, an inner cylinder, and a partition plate that closes the upper end opening of the inner cylinder, which are concentrically arranged; an upper ring 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 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 semi-circular plates. Ear plates are symmetrically arranged on the outer wall of the inner cylinder. A connecting rod is fixedly arranged on the outer wall of the semi-circular plate. The connecting rod is rotatably arranged on the ear plate through a connecting shaft. A motor I for driving the connecting shaft to rotate is fixedly arranged on the outer wall of the inner cylinder. When the two motors I rotate, the two semi-circular plates are driven to block and completely open the inner cylinder; When the two semi-circular plates are completely open, the semi-circular plates are located between the upper ring plate and the inner cylinder; An inner and outer annular connecting plate inserted into the annular channel is fixedly arranged on the lower end surface of the outer cylinder. The outer wall of the inner annular connecting plate and the inner wall of the outer annular connecting plate are respectively attached to 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 connection cylinder includes an inner connection cylinder with the same size as the inner cylinder and an outer connection cylinder with the same size as the outer cylinder. The tops of the inner connection cylinder and the outer connection cylinder are sealed by a circular plate. An inner and outer annular connecting plate inserted into the annular channel is fixedly arranged on the lower end surface of the outer connection cylinder; At least one cryogenic gas inlet is arranged on the circular plate.

[0005] The cryogenic gas is injected from the top and diffuses along the annular channel to the intermediate cylinders of each layer, rapidly solidifying the sample in-situ and maintaining the original formation structure. The partition plate composed of semi-circular plates is driven by a motor to open and close, and can be partitioned when the sample is in a relatively loose state, realizing segmented enclosure of the sample.

[0006] Further, an annular baffle is fixedly arranged at the upper end of the annular cutter, and an annular boss is concentrically arranged 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 cutter abuts against the annular boss, and the inner and outer annular connecting plates abut against the annular baffle.

[0007] Further, there is an interval allowing the semi-circular plate to pass between two adjacent inner cylinders, and the intervals are sealed by detachable elastomers. The detachable elastomer seals the intervals, allowing the semi-circular plate to pass freely while maintaining the airtightness between the cylinders and preventing leakage of the sample. An annular groove for placing the elastomer is arranged at the lower end of the inner cylinder. The lower part of the elastomer protrudes from the annular groove and seals the interval.

[0008] Further, the upper parts of the inner and outer annular connecting plates at the lower part of the outer connecting cylinder are blocked by an annular sealing plate. A trachea is arranged on the cryogenic gas inlet, and the lower end of the trachea passes through the annular sealing plate and enters the adjacent annular channel. The upper end of the trachea is communicated with a high-pressure air pump.

[0009] Further, the vehicle frame includes two symmetrically arranged side loading plates. One end of the two side loading plates is rotatably provided with a driving wheel, and the other end is rotatably provided with a driven wheel. The driving wheel and the driven wheel on the same side are driven by a crawler. The driving motor of the driving wheel is located outside the crawler; The two side loading plates are fixedly connected by a cross beam. The cross beam is close to the driven wheel. Fixed columns are symmetrically arranged on the cross beam. A rotating seat is rotatably arranged between the two fixed columns. The rotating seat includes a limiting ring sleeved outside 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 motion mechanism is arranged on the extension rod. The fixed end of the rotating mechanism is arranged on the output end of the reciprocating motion mechanism, and the output shaft of the rotating mechanism is connected with the top connecting cylinder and is concentrically arranged; It further includes a telescopic rod for driving the rotating seat to swing. A connecting vertical plate facing the side loading plate is fixedly arranged on the outer wall of the limiting ring. The housing of the telescopic rod is hinged on the side loading plate, the push rod of the telescopic rod is hinged on the connecting vertical plate, and the hinged part of the housing is close to the driving wheel.

[0010] Further, the reciprocating motion mechanism includes a hydraulic cylinder disposed on the extension rod, and a motor bracket is fixedly provided at the upper end of the hydraulic rod of the hydraulic cylinder; The rotation mechanism includes a second motor for driving the output shaft. The second motor is fixed on the motor bracket, and the axis of the push rod is parallel to the axis of the sampling cylinder.

[0011] Further, a limiting rod facing the connecting vertical plate is fixedly provided on the fixed vertical column. When the sampling cylinder is in a vertical state, the connecting vertical plate contacts the limiting rod.

[0012] Further, a plurality of support rods are fixedly provided between the two side load plates. A cushion seat is fixedly provided on the support rod, and an arc-shaped groove matching with the outer wall of the sampling cylinder is provided on the cushion seat. The sampling cylinder is in a horizontal state and is placed in the arc-shaped groove.

[0013] Further, a plurality of saw teeth are circumferentially distributed at the lower end of the annular knife. The saw tooth structure of the annular knife reduces the cutting resistance and improves the drilling efficiency.

[0014] Further, the semi-circular plate is made of a thin steel plate or a semi-circular cutting tool.

[0015] The refrigerating gas can be carbon dioxide or nitrogen. The high-pressure pump for transporting carbon dioxide or nitrogen and the storage tank for storing carbon dioxide or nitrogen both adopt the prior art and will not be elaborated here.

[0016] The inner and outer annular connecting plates are fixedly connected by a plurality of inner support short rods; the outer cylinder and the inner cylinder are fixedly connected by a plurality of inner support long rods; the inner connecting cylinder and the outer connecting cylinder are fixedly connected by a plurality of inner support long rods.

[0017] The annular channel and the inner and outer annular connecting plates are fixedly connected by threads, and matching threads are provided on the inner wall of the annular channel and the inner and outer annular connecting plates.

[0018] Usage method: The telescopic rod contracts to make the rotating base horizontal. The sampling cylinder is placed in the arc-shaped groove on the cushion base, and the crawler vehicle travels to the exploration point. The push rod of the telescopic rod extends, pushing the connecting vertical plate to rotate around the hinge axis until it contacts the limit rod, making the sampling cylinder in a vertical state. The hydraulic cylinder drives the rotating mechanism and the sampling cylinder to move downward, and the annular cutter contacts the formation; the second motor drives the sampling cylinder to rotate, and the annular cutter cuts into the formation, while the hydraulic cylinder continues to press down; when the sampling cylinder reaches the appropriate position in the formation. After the annular cutter reaches the target depth, it stops rotating; the first motor of each intermediate cylinder rotates, driving the semi-circular plate to close and seal the inner cylinder. (When there is an elastomer, the semi-circular plate needs to cut the elastomer to seal the inner cylinder), segmentally isolating the sample. The cryogenic gas is injected into the annular channel through the trachea, diffuses between the inner cylinder and the outer cylinder of each intermediate cylinder, and is transmitted to the sample outside the inner cylinder through the inner cylinder to solidify the sample. After the sample solidification is completed, the hydraulic cylinder lifts the sampling cylinder to the vehicle frame, and the push rod of the telescopic rod pushes the connecting vertical plate to reverse around the hinge axis until the sampling cylinder is placed in the arc-shaped groove, and at this time the sampling cylinder is in a horizontal state. Loosen the threaded connection between the annular channel and the inner and outer annular connecting plates, and disassemble the intermediate cylinder layer by layer; place the intermediate cylinder containing the sample in a low-temperature environment for transportation. Start the first motor to open the semi-circular plate, directly take out the frozen and solidified columnar sample, and label the sample according to the installation sequence.

[0019] The beneficial effects brought by the technical solution provided by the embodiment of the present invention are: the cryogenic gas is transported through the annular channel to realize the solidification of the sample, solving the problem that the sample is easily broken when sampling in loose formations, water-saturated sand layers, silt, soft rocks, fragmented formations, etc.; through the combination of detachable elastomers and threaded connections, the airtightness requirements of the annular channel are met; the sample is taken out in segments through the semi-circular plate, which is convenient for later transportation, storage and sample extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the following listed drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention (the sampling cylinder is in a horizontal state); Figure 2 is the overall structural schematic diagram of the embodiment of the present invention (the sampling cylinder is in a vertical state); Figure 3 is Figure 2 the partial enlarged view at A in Figure 4 is the structural schematic diagram of the sampling cylinder; Figure 5 is the structural schematic diagram of the intermediate cylinder; Figure 6 is a structural schematic diagram with different angles; Figure 5 The diagram shows a state where the middle cylinder is blocked; Figure 7 is a schematic diagram of the state where the middle cylinder is blocked; Figure 8 is Figure 7 a partial enlarged view of part B in; Figure 9 is a schematic diagram of the state where the middle cylinder is completely open; Figure 10 is a structural schematic diagram of the annular knife; Figure 11 is a schematic diagram of the internal structure of the sampling cylinder; Figure 12 is Figure 11 a partial enlarged view of part C in; Figure 13 is Figure 11 a partial enlarged view of part D in.

[0022] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Frame; 2. Driving wheel; 3. Driven wheel; 4. Sampling cylinder; 5. Rotating mechanism; 6. Reciprocating motion mechanism; 7. Telescopic rod; 8. Rotating base; 10. Air pipe; 101. Side loading plate; 102. Cross beam; 103. Fixed column; 104. Support rod; 105. Pad base; 106. Limit rod; 201. Driving motor; 401. Top connecting cylinder; 402. Annular knife; 40201. Annular boss; 40202. Annular baffle; 40203. Saw teeth; 403. Middle 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. Semi-circular 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 implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in conjunction with embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] Refer to Figures 1-13 , a geological exploration sampling device, characterized in that it includes a crawler vehicle, a sampling cylinder 4 provided on the frame 1 of the crawler vehicle, a rotating mechanism 5 for driving the sampling cylinder 4 to rotate, and a reciprocating motion mechanism 6 for driving the sampling cylinder 4 and the rotating mechanism 5 to move up and down; The sampling cylinder 4 includes a bottom annular knife 402, a top connecting cylinder 401, and a plurality of intermediate cylinders disposed between the annular knife 402 and the connecting cylinder; The intermediate cylinder includes an outer cylinder, an inner cylinder, and a partition plate that closes the upper end opening of the inner cylinder, which are concentrically arranged; an upper ring plate 40304 is concentrically arranged on the inner side of the upper part of the outer cylinder, and an annular channel 40305 is formed between the upper ring plate 40304 and the outer cylinder. The upper ring plate 40304 is fixedly connected to the inner cylinder and the outer cylinder. The partition plate is formed by splicing two semi-circular plates 40309. Ear plates 40303 are symmetrically arranged on the outer wall of the inner cylinder. A connecting rod is fixedly arranged on the outer wall of the semi-circular plate 40309. The connecting rod is rotatably arranged on the ear plate 40303 through a connecting shaft 40310. A motor 40311 for driving the connecting shaft 40310 to rotate is fixedly arranged on the outer wall of the inner cylinder. When the two motors 40311 rotate, the two semi-circular plates 40309 are driven to block and completely open the inner cylinder; When the two semi-circular plates 40309 are completely open, the semi-circular plates 40309 are located between the upper ring plate 40304 and the inner cylinder; An inner and outer annular connecting plate 40307 inserted into the annular channel 40305 is fixedly arranged on the lower end surface of the outer cylinder. The outer wall of the inner annular connecting plate 40306 and the inner wall of the outer annular connecting plate 40307 are respectively attached to the inner wall of the annular channel 40305; 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; The top connecting cylinder 401 includes an inner connecting cylinder having the same size as the inner cylinder and an outer connecting cylinder having the same size as the outer cylinder. The tops of the inner connecting cylinder and the outer connecting cylinder are sealed by a circular plate. An inner and outer annular connecting plate 40307 inserted into the annular channel 40305 is fixedly arranged on the lower end surface of the outer connecting cylinder; At least one cryogenic gas inlet is provided on the circular plate.

[0025] The cryogenic gas is injected from the top and diffuses along the annular channel 40305 to each layer of the intermediate cylinder, quickly in-situ solidifying the sample and maintaining the original structure of the formation. The partition plate composed of the semi-circular plates 40309 is driven by a motor to open and close, and can be partitioned when the sample is in a relatively loose state, realizing segmented sealing of the sample.

[0026] An annular baffle 40202 is fixedly arranged at the upper end of the annular knife 402. An annular boss 40201 is concentrically arranged 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 of the intermediate cylinder adjacent to the annular knife 402 abuts against the annular boss 40201 and the inner and outer annular connecting plates 40307 abut against the annular baffle 40202.

[0027] There is an interval allowing the semi-circular plate 40309 to pass between adjacent inner cylinders, and the intervals are sealed by detachable elastomers. The detachable elastomers seal the intervals, allowing the semi-circular plate 40309 to pass freely while maintaining the airtightness between the cylinders and preventing the leakage of samples. An annular groove 40308 for placing the elastomer is provided at the lower end of the inner cylinder. The lower part of the elastomer protrudes from the annular groove 40308 and seals the intermediate interval.

[0028] The upper part of the inner and outer annular connecting plates 40307 at the lower part of the outer connecting cylinder is blocked by an annular sealing plate. A trachea 10 is provided on the refrigerating gas inlet, and the lower end of the trachea 10 passes through the annular sealing plate and enters the adjacent annular channel 40305. The upper end of the trachea 10 is communicated with a high-pressure air pump.

[0029] The vehicle frame 1 includes two symmetrically arranged side loading plates 101. A driving wheel 2 is rotatably provided at one end of the two side loading plates 101, and a driven wheel 3 is rotatably provided at the other end. The driving wheel 2 and the driven wheel 3 on the same side are driven by a crawler, and the driving motor 201 of the driving wheel 2 is located outside the crawler; The two side loading plates 101 are fixedly connected by a cross beam 102. The cross beam 102 is close to the driven wheel 3. Fixed columns 103 are symmetrically arranged on the cross beam 102. A rotating seat 8 is rotatably provided between the two fixed columns 103. The rotating seat 8 includes a limiting ring 801 sleeved outside the sampling cylinder 4. An extension rod 802 is fixedly provided on the outer wall of the limiting ring 801. The extension rod 802 is rotatably provided 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; A reciprocating motion mechanism 6 is provided on the extension rod 802. The fixed end of the rotating mechanism 5 is provided at the output end of the reciprocating motion mechanism 6. The output shaft 501 of the rotating mechanism 5 is connected to the top connecting cylinder 401 and is concentrically arranged; It further includes a telescopic rod 7 for driving the rotating seat 8 to swing. A connecting vertical plate 803 facing the side loading plate 101 is fixedly provided on the outer wall of the limiting ring 801. The housing 701 of the telescopic rod 7 is hinged on the side loading plate 101, and the push rod 702 of the telescopic rod 7 is hinged on the connecting vertical plate 803. The hinge point of the housing 701 is close to the driving wheel.

[0030] The reciprocating motion mechanism 6 includes a hydraulic cylinder 601 provided on the extension rod 802. The upper end of the hydraulic rod 602 of the hydraulic cylinder 601 is fixedly provided with a motor bracket; The rotating mechanism 5 includes a second motor for driving the output shaft 501. The second motor is fixed on the motor bracket, and the axis of the push rod 702 is parallel to the axis of the sampling cylinder 4.

[0031] A limiting rod 106 facing the connecting vertical plate 803 is fixedly provided on the fixed column 103. When the sampling cylinder 4 is in a vertical state, the connecting vertical plate 803 and the limiting rod 106 are in contact.

[0032] A number of support rods 104 are fixedly arranged between two side loading plates 101. A cushion seat 105 is fixedly arranged on the support rod 104. An arc-shaped groove matching with the outer wall of the sampling cylinder 4 is arranged on the cushion seat 105. The sampling cylinder 4 is in a horizontal state and is placed in the arc-shaped groove.

[0033] A number of saw teeth are circumferentially distributed at the lower end of the annular knife 402. The saw tooth structure of the annular knife 402 reduces the cutting resistance and improves the drilling efficiency.

[0034] The semi-circular plate 40309 is made of a thin steel plate or a semi-circular cutting tool.

[0035] The refrigerating gas can be carbon dioxide or nitrogen. The high-pressure pumps for transporting carbon dioxide or nitrogen and the storage tanks for storing carbon dioxide or nitrogen all adopt the prior art and will not be elaborated here.

[0036] The inner and outer annular connecting plates 40307 are fixedly connected by a number of inner support short rods; the outer cylinder and the inner cylinder are fixedly connected by a number of inner support long rods; the inner connecting cylinder and the outer connecting cylinder are fixedly connected by a number of inner support long rods.

[0037] The annular channel 40305 and the inner and outer annular connecting plates 40307 are fixedly connected by threads. Threads that can cooperate are arranged on the inner wall of the annular channel 40305 and the inner and outer annular connecting plates 40307.

[0038] Usage method: The telescopic rod 7 contracts to make the rotating base 8 horizontal. The sampling cylinder 4 is placed in the arc-shaped groove on the cushion base 105, and the crawler vehicle travels to the exploration point. The push rod 702 of the telescopic rod 7 extends, pushing the connecting vertical plate 803 to rotate around the hinge shaft until it contacts the limit rod 106, making the sampling cylinder 4 in a vertical state. The hydraulic cylinder 601 drives the rotating mechanism 5 and the sampling cylinder 4 to move downward, and the annular cutter 402 contacts the formation; the second motor drives the sampling cylinder 4 to rotate, and the annular cutter 402 cuts into the formation, while the hydraulic cylinder 601 continues to press down; when the sampling cylinder 4 reaches the appropriate position in the formation. After the annular cutter 402 reaches the target depth, it stops rotating; the first motor 40311 of each intermediate cylinder rotates, driving the semi-circular plate 40309 to close to block the inner cylinder. (When there is an elastomer, the semi-circular plate 40309 needs to cut the elastomer to block the inner cylinder), segmentally isolating the sample. The cryogenic gas is injected into the annular channel 40305 through the trachea 10, diffuses between the inner cylinder and the outer cylinder of each intermediate cylinder, and is transmitted to the sample outside the inner cylinder through the inner cylinder to solidify the sample. After the sample solidification is completed, the hydraulic cylinder 601 lifts the sampling cylinder 4 to the vehicle frame 1, and the push rod 702 of the telescopic rod 7 pushes the connecting vertical plate 803 to reverse around the hinge shaft until the sampling cylinder 4 is placed in the arc-shaped groove, and at this time the sampling cylinder 4 is in a horizontal state. Loosen the threaded connection between the annular channel 40305 and the inner and outer annular connecting plates 40307, and disassemble the intermediate cylinder layer by layer; place the intermediate cylinder containing the sample in a low-temperature environment for transportation. Start the first motor 40311 to open the semi-circular plate 40309, directly take out the frozen and solidified columnar sample, and label the sample according to the installation sequence.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A geological exploration sampling device, characterized in that, It includes a crawler vehicle, a sampling cylinder arranged on the frame of the crawler vehicle, a rotating mechanism for driving the sampling cylinder to rotate, and a reciprocating motion 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 a plurality of intermediate cylinders arranged between the annular knife and the connecting cylinder; the intermediate cylinder includes an outer cylinder, an inner cylinder, and a partition plate sealing the upper opening of the inner cylinder arranged concentrically; an upper ring 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 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 semi-circular plates. Ear plates are symmetrically arranged on the outer wall of the inner cylinder. Connecting rods are fixedly arranged on the outer wall of the semi-circular plate. The connecting rods are rotatably arranged on the ear plates through connecting shafts. A first motor for driving the connecting shaft to rotate is fixedly arranged on the outer wall of the inner cylinder. When the two first motors rotate, the two semi-circular plates are driven to seal and completely open the inner cylinder; When the two semi-circular plates are completely open, the semi-circular plates are located between the upper ring plate and the inner cylinder; An inner and outer annular connecting plate inserted into the annular channel is fixedly arranged on the lower end surface of the outer cylinder. The outer wall of the inner annular connecting plate and the inner wall of the outer annular connecting plate are respectively attached to 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 cylinder includes an inner connecting cylinder with the same size as the inner cylinder and an outer connecting cylinder with the same size as the outer cylinder. The tops of the inner connecting cylinder and the outer connecting cylinder are sealed by a circular plate. An inner and outer annular connecting plate inserted into the annular channel is fixedly arranged on the lower end surface of the outer connecting cylinder; At least one cryogenic gas inlet is arranged on the circular plate; 2. The geological exploration sampling device according to claim 1, wherein, An annular baffle is fixedly arranged at the upper end of the annular knife. An annular boss is concentrically arranged 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 of 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; 3. The geological exploration sampling device according to claim 1, characterized in that, There is an interval allowing the semi-circular plate to pass between two adjacent inner cylinders, and the intervals are sealed by detachable elastic bodies; 4. The geological exploration sampling device according to claim 1, characterized in that, The upper part of the inner and outer annular connecting plates at the lower part of the outer connecting cylinder is blocked by an annular sealing plate. A trachea is arranged on the cryogenic gas inlet. The lower end of the trachea passes through the annular sealing plate and enters the adjacent annular channel; 5. The geological exploration sampling device according to claim 1, characterized in that, The frame includes two symmetrically arranged side loading plates. A driving wheel is rotatably arranged at one end of the two side loading plates, and a driven wheel is rotatably arranged at the other end. The driving wheel and the driven wheel on the same side are driven by a crawler. The driving motor of the driving wheel is located outside the crawler; The two side loading plates are fixedly connected by a cross beam. The cross beam is close to the driven wheel. Fixed columns are symmetrically arranged on the cross beam. A rotating seat is rotatably arranged between the two fixed columns. The rotating seat includes a limiting ring sleeved outside 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. The axis of the hinge shaft is parallel to the axis of the driven wheel; The reciprocating motion mechanism is arranged on the extension rod, the fixed end of the rotating mechanism is arranged on the output end of the reciprocating motion mechanism, and the output shaft of the rotating mechanism is connected to and concentric with the top connecting cylinder; It further includes a telescopic rod for driving the swing of the rotating seat. A connecting vertical plate facing the side loading plate is fixedly arranged on the outer wall of the limiting ring. The housing of the telescopic rod is hinged on the side loading plate, the push rod of the telescopic rod is hinged on the connecting vertical plate, and the hinged part of the housing is close to the driving wheel.

6. The geological exploration sampling device according to claim 5, wherein The reciprocating motion mechanism includes a hydraulic cylinder arranged on the extension rod, and a motor bracket is fixedly arranged at the upper end of the hydraulic rod of the hydraulic cylinder; The rotating mechanism includes a motor II for driving the output shaft. The motor II is fixed on the motor bracket, and the axis of the push rod is parallel to the axis of the sampling cylinder.

7. The geological exploration sampling device according to claim 5, characterized in that, A limiting rod facing the connecting vertical plate is fixedly arranged on the fixed upright column. When the sampling cylinder is in a vertical state, the connecting vertical plate and the limiting rod are in contact.

8. The geological exploration sampling device according to claim 5, characterized in that, A plurality of support rods are fixedly arranged between the two side loading plates. A cushion seat is fixedly arranged on the support rod, and an arc-shaped groove for cooperating with the outer wall of the sampling cylinder is arranged on the cushion seat. The sampling cylinder is in a horizontal state and is placed in the arc-shaped groove.

9. The geological exploration sampling device according to claim 5, wherein, A plurality of saw teeth are circumferentially distributed at the lower end of the annular knife.

10. The geological exploration sampling device according to claim 1, characterized in that, The cryogenic gas is carbon dioxide or nitrogen.

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