Sampling device for geotechnical investigation and sampling method thereof

Abstract

The invention relates to the technical field of sampling devices, in particular to a geotechnical investigation sampling device and a sampling method thereof.The geotechnical investigation sampling device comprises a bottom plate, supports are oppositely arranged on the bottom plate, a cross beam is arranged on the supports, a sampling barrel is arranged on the cross beam, a cleaning mechanism is arranged on the bottom plate and comprises a movable plate, a stand column is arranged on the movable plate, and a water storage cavity is formed in the stand column; water outlet pipes are oppositely arranged on the stand column, an extension rod with one end extending out is arranged in the water storage cavity, the extension rod moves downwards to be used for driving water in the water storage cavity to be sprayed out, a cleaning rod is further arranged on the stand column, and the extension rod moves downwards to be used for driving the cleaning rod to rotate; through the arrangement of the cleaning assembly, the inner wall of the sampling barrel can be cleaned after sampling work is completed, and compared with the prior art, the rock-soil sampling device can prevent rock-soil sample residues remaining on the inner wall of the sampling barrel from influencing subsequent sampling, so that the accuracy of sampling each time is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices, in particular to a rock and soil exploration sampling device and a sampling method thereof. Background Art

[0002] Geotechnical sampling plays a crucial role in the development of construction plans and construction quality. Before civil engineering work begins, a sampling device is required. Existing sampling devices typically include a rotatable and elevating sampling cylinder, which is inserted into the ground to obtain the required geotechnical samples. During a single sampling operation, geotechnical samples from multiple locations often need to be collected. Therefore, after a sampling operation is completed, the inner wall of the sampling cylinder needs to be cleaned to prevent residual geotechnical sample residue from the previous sampling operation, which could affect the accuracy of the next sampling operation.

[0003] For example, the patent with announcement number CN117686256B discloses a geotechnical sampling device and sampling method for geotechnical engineering survey. Although the geotechnical sampling device provides a closed drilling environment for the drill during operation through the cooperation of the net bag shield and the ground, preventing mud chips from splashing onto the operator during the drilling process, thereby improving the practicality of the device, in actual use, after a sampling is completed, geotechnical sample residues may exist in the lifting screw barrel. If it is not cleaned, it will affect the accuracy of the next sampling. The geotechnical sampling device does not specifically mention how to solve this problem, so it needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a rock and soil survey sampling device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The cam is provided with a plurality of movable plates, which are arranged on the movable plate and the movable plate is provided with a plurality of movable cleaning members.

[0006] Preferably, a limit groove is provided in the bracket along its height direction, and a limit block sliding in the limit groove is provided on the side wall opposite to the beam. A rotatable rotating rod is provided in the limit groove in the bracket on one side, and the rotating rod thread passes through the limit block on one side of the beam. A guide rod is provided in the limit groove in the bracket on the other side, and the guide rod passes through the limit block on the other side of the beam. The rotation of the rotating rod is used to drive the beam to rise and fall along the axial direction of the rotating rod.

[0007] Preferably, the crossbeam is provided with a slot along its length, a movable block is provided in the slot, a first positioning hole and a second positioning hole are relatively provided in the slot, a rotatable hand screw is provided on the block, one end of the hand screw can be inserted into the first positioning hole or the second positioning hole, and one end of the hand screw is inserted into the first positioning hole or the second positioning hole to fix the position of the block.

[0008] Preferably, a first motor is provided on the clamping block, and the sampling tube is provided on the output shaft of the first motor.

[0009] Preferably, a movable piston plate is provided in the water storage chamber, and a plurality of water leakage holes are relatively provided on the piston plate. One end of the water outlet pipe is fixedly connected to the water leakage hole, and the other end of the extension rod is fixedly connected to the piston plate. The extension rod moves downward to drive the water in the water storage chamber to spray out through the water outlet pipe. The bottom end of the water storage chamber is also provided with a spring for pushing the piston plate up.

[0010] Preferably, a top cover is provided at the opening of the water storage chamber, and a driving cylinder with one end extending and rotatable is provided inside the top cover. The cleaning rod is provided on the side wall of the driving cylinder outside the water storage chamber. The outer side wall of the extension rod is provided with spiral grooves along its axial direction, and the inner side wall of the driving cylinder is provided with a sliding rod sliding in the spiral groove. The extension rod moves downward to drive the sliding rod to slide in the spiral groove, thereby rotating the driving cylinder.

[0011] Preferably, a plurality of strip grooves are provided on the side wall of the column along its axial direction corresponding to the water outlet pipe, an elastic block is provided in the strip groove, and a rotatable shaft is also provided in the strip groove. The shaft is fixedly connected to the side wall of the water outlet pipe, and a spiral blade is provided on the driving cylinder located in the water storage chamber along its axial direction. The driving cylinder rotates to drive the spiral blades to contact the water outlet pipe in turn to make it swing.

[0012] Preferably, a drive shell is provided on the movable plate, a drive cavity is provided in the drive shell, a rotatable first gear, a second gear and a third gear are relatively provided in the drive cavity, the first gear is meshed with the second gear, the second gear is meshed with the third gear, and one end of the rotating shaft extends into the drive shell and is fixedly connected to the third gear.

[0013] Preferably, a limiting ring for limiting the moving distance of the piston plate is provided in the water storage chamber, an arc groove is relatively provided on the piston plate, and a limiting strip sliding in the arc groove is relatively provided on the side wall of the water storage chamber.

[0014] The present invention also provides a geotechnical survey and sampling method, which uses the above-mentioned geotechnical survey and sampling device and specifically includes the following steps: S1. Move the bottom plate to the desired position, start the first motor to drive the driving cylinder to rotate, move the crossbeam downward, and make the sampling cylinder pass through the bottom plate and contact the ground to collect rock and soil samples; S2. Turn off the first motor, move the crossbeam upward, take out the rock and soil sample in the sampling tube, move the movable plate to the bottom end of the crossbeam, move the clamping block to the top of the movable plate, tighten the thumb screw so that it extends into the second positioning hole, move the crossbeam downward, so that the sampling tube contacts the extension rod, and the downward movement of the extension rod drives the piston plate downward, and the water in the water storage chamber is sprayed out through the water outlet pipe to spray the inner wall of the sampling tube; S3. The extension rod continues to move downward, and the sliding rod slides in the spiral groove, driving the driving cylinder and the cleaning rod to rotate. The cleaning rod crushes the rock and soil sample residues that fall off the inner wall of the sampling cylinder. The driving cylinder drives the spiral blades to rotate. The spiral blades sequentially contact the water outlet pipes to swing, thereby spraying different positions on the inner wall of the sampling cylinder. S4. Rotate the first gear to drive the second gear and the third gear to rotate, drive the rotating shaft to rotate, and cause the knocking rod to rotate accordingly, knocking the outer wall of the sampling tube to remove rock and soil residues on the inner wall of the sampling tube; S5. After completing the cleaning of the interior of the sampling tube, move the crossbeam upwards, move the clamping block, tighten the thumb screw to insert it into the first positioning hole, and move the movable plate away from the crossbeam and fix it for subsequent sampling.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, through the setting of the cleaning component, can clean the inner wall of the sampling tube after the sampling work is completed. Compared with the existing ones, the present application can prevent the rock and soil sample residues remaining on the inner wall of the sampling tube from affecting subsequent sampling, thereby ensuring the accuracy of each sampling.

[0016] 2. The present invention, through the rotatable setting of the rotating shaft, enables the knocking rod located thereon to knock the outer wall of the sampling tube, so that the residue on the inner wall of the sampling tube is loosened and falls off, which is convenient for subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a structural diagram of a rock and soil exploration sampling device in the present invention.

[0018] Figure 2 This is a schematic structural diagram of the bottom plate, columns, sampling tube and supporting legs of the movable plate in the present invention.

[0019] Figure 3 It is a partial cross-sectional schematic diagram of the bottom plate, bracket and sampling tube in the present invention.

[0020] Figure 4 It is a structural schematic diagram of the crossbeam in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the clamping block, the hand screw and the first motor in the present invention.

[0022] Figure 6 It is a structural schematic diagram of the movable plate, drive housing, column and rotating shaft in the present invention.

[0023] Figure 7 It is a cross-sectional schematic diagram of the column in the present invention.

[0024] Figure 8 for Figure 7 Enlarged view of point A in the middle.

[0025] Figure 9 It is a structural schematic diagram of the piston plate in the present invention.

[0026] Figure 10 It is a structural schematic diagram of the cleaning rod, driving cylinder and spiral blade in the present invention.

[0027] Figure 11 It is a partial cross-sectional schematic diagram of the drive housing in the present invention.

[0028] The meaning of each number in the figure is: 100, bottom plate; 101, bracket; 102, second motor; 103, avoidance hole; 110, crossbeam; 111, sampling tube; 120, movable plate; 200, limit slot; 300, limiting slot; 301, guide rod; 302, rotating rod; 310, first motor; 320, fixing pin; 321, universal wheel; 400, card slot; 401, first positioning hole; 402, second positioning hole; 500, clamping block; 501, hand screw; 600, drive housing; 601, third motor; 602, rotating disk; 603, scraper; 604, hand-tightening bolt; 605, limit slider; 610, rotating shaft; 611, knocking rod; 620, column; 631, cleaning rod; 640, extension rod; 641, bellows; 700, spiral groove; 710, water storage chamber; 711, limit bar; 712, spring; 720, piston plate; 800, strip groove; 810, water outlet pipe; 811, elastic block; 812, rotating shaft; 820, driving cylinder; 821, spiral blade; 830, limiting ring; 840, top cover; 900, leak hole; 901, arc groove; 1000, sliding rod; 1100, first gear; 1101, second gear; 1102, third gear. DETAILED DESCRIPTION

[0029] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments. It should be understood that the embodiments are merely for explaining the present invention and are not intended to limit the present invention.

[0030] The following is combined with Figures 1-11 This embodiment is described in further detail.

[0031] See also Figures 1-8 In this embodiment, a geotechnical exploration sampling device includes a base plate 100, a bracket 101 is provided on the base plate 100, a liftable crossbeam 110 is provided on the bracket 101, a movable and rotatable sampling tube 111 is provided on the crossbeam 110, a movable cleaning mechanism is provided on the base plate 100, and the cleaning mechanism includes a movable movable plate 120, a column 620 is provided on the movable plate 120, and a water storage chamber 710 with an upper end opening is provided in the column 620, and the water storage chamber 710 is used to store water. A plurality of swingable water outlet pipes 810 are provided on the column 620, and an extension rod 64 extending at one end is provided in the water storage chamber 710. 0, the extension rod 640 moves downward to drive the water in the water storage chamber 710 to spray out through the water outlet pipe 810, thereby spraying the inner wall of the sampling tube 111, and a rotatable cleaning rod 631 is further provided on the column 620. The extension rod 640 moves downward to drive the cleaning rod 631 to rotate, thereby crushing the residue on the inner wall of the sampling tube 111, and the rotation of the cleaning rod 631 is used to drive the water outlet pipe 810 to swing. A rotatable rotating shaft 610 is also provided on the movable plate 120, and a plurality of rotatable knocking rods 611 are relatively provided on the rotating shaft 610. The rotation of the rotating shaft 610 is used to drive the knocking rod 611 to knock on the outer wall of the sampling tube 111.

[0032] In this embodiment, the bottom plate 100 is provided with an avoidance hole 103 for the sampling tube 111 to pass through, and a second motor 102 is provided on the bracket 101 located on one side of the rotating rod 302. The second motor 102 is used to drive the rotating rod 302 to rotate. The bottom of the bottom plate 100 is relatively provided with a plurality of universal wheels 321, and the bottom of the bottom plate 100 is relatively provided with a plurality of rotatable fixing nails 320. When performing geotechnical survey sampling, the bottom plate 100 is moved to the desired position, and then the fixing nails 320 are rotated in sequence so that the bottom ends of the fixing nails 320 extend into the ground to fix the bottom plate 100, and the first motor 310 is started to drive The sampling cylinder 111 rotates, and then the second motor 102 is started to drive the rotating rod 302 to rotate. Guided by the guide rod 301, the crossbeam 110 drives the first motor 310 and the sampling cylinder 111 to move downward. The rotating sampling cylinder 111 can pass through the avoidance hole 103 to contact the ground and sample the rock and soil samples. After the sampling is completed, the first motor 310 is turned off and the second motor 102 is started, so that the crossbeam 110 drives the first motor 310 and the sampling cylinder 111 to move upward, so that the sampling cylinder 111 is separated from the ground and extends above the bottom plate 100. At this time, the rock and soil samples in the sampling cylinder 111 can be taken out using tools; Among them, by setting up the cleaning component, the inner wall of the sampling tube 111 can be cleaned after the sampling work is completed. Compared with the existing embodiment, this embodiment can prevent the rock and soil sample residue remaining on the inner wall of the sampling tube 111 from affecting subsequent sampling, thereby ensuring the accuracy of each sampling; Specifically, in the process of the sampling tube 111 moving downward, not only can the water in the water storage chamber 710 be sprayed out through the water outlet pipe 810 to spray the inner wall of the sampling tube 111, so that the rock and soil sample residues on the inner wall of the sampling tube 111 are moistened, but it can also drive the cleaning rod 631 to rotate, and crush the rock and soil sample residues that fall into the sampling tube 111 to prevent the rock and soil sample residues from being stuck between the sampling tube 111 and the column 620. By rotating the rotating shaft 610, the knocking rod 611 is driven to rotate accordingly to knock the sampling tube 111 so that the rock and soil sample residues remaining on the inner wall of the sampling tube 111 are loosened, and when the driving tube 820 rotates, the water outlet pipe 810 can be driven to swing, so as to spray different heights of the inner wall of the sampling tube 111, so that the spraying effect is better.

[0033] Combine Figure 1-Figure 3As shown, in this embodiment, a limit groove 300 is provided in the bracket 101 along its height direction, and a limit block sliding in the limit groove 300 is provided at the side wall opposite to the beam 110. A rotatable rotating rod 302 is provided in the limit groove 300 in the bracket 101 on one side, and the rotating rod 302 is threaded through the limit block on one side of the beam 110. A guide rod 301 is provided in the limit groove 300 in the bracket 101 on the other side, and the guide rod 301 passes through the limit block on the other side of the beam 110. The rotation of the rotating rod 302 is used to drive the beam 110 to rise and fall along the axial direction of the rotating rod 302.

[0034] In this embodiment, the movement direction of the beam 110 in the bracket 101 is restricted by the setting of the limit groove 300 and the limit block, that is, it can only move along the height direction of the bracket 101. When the rotating rod 302 rotates, the beam 110 will move along the height direction of the bracket 101 under the guidance of the guide rod 301, the limit groove 300 and the limit block.

[0035] Combine Figure 1-Figure 5 As shown, in this embodiment, the beam 110 is provided with a slot 400 along its length direction, and a movable block 500 is provided in the slot 400. A first positioning hole 401 and a second positioning hole 402 are relatively provided in the slot 400. A rotatable hand screw 501 is provided on the block 500, and one end of the hand screw 501 can be inserted into the first positioning hole 401 or the second positioning hole 402. One end of the hand screw 501 is inserted into the first positioning hole 401 or the second positioning hole 402 to fix the position of the block 500.

[0036] In this embodiment, when sampling is required, the hand screw 501 can be turned to make it fall off the second positioning hole 402, thereby releasing the fixation of the clamping block 500, moving the clamping block 500 to the top of the avoidance hole 103, and then the hand screw 501 is turned to make it extend into the first positioning hole 401 to fix the clamping block 500, so as to prevent the clamping block 500 from accidentally moving on the crossbeam 110 during sampling, thereby causing the sampling tube 111 to accidentally move; The block 500 is provided with a first motor 310, and the sampling cylinder 111 is provided on the output shaft of the first motor 310. The first motor 310 can drive the sampling cylinder 111 to rotate, thereby facilitating the sampling operation. Specifically, a limiting slot 200 is provided on the bottom plate 100 along its width direction, and a limiting slider 605 is provided on the movable plate 120 and slides in the limiting slot 200, thereby limiting the sliding of the movable plate 120 on the bottom plate 100. A rotatable hand screw bolt 604 is provided on the movable plate 120, and two positioning holes for the hand screw bolt 604 to extend into are provided on the bottom plate 100. When the hand screw bolt 604 is extended into the positioning hole, the movable plate 120 can be fixed on the bottom plate 100. The positioning hole is along the limiting slot 200. The movable plate 120 is arranged in the extension direction, one positioning hole is located on the bottom plate 100 directly below the beam 110, and the other positioning hole is located on the bottom plate 100 near the end of the limit slot 200. When the sampling cylinder 111 needs to be cleaned, the movable plate 120 can be moved to directly below the beam 110 so that the sampling cylinder 111 is aligned with the column 620. At this time, the sampling cylinder 111 is coaxial with the column 620. When the sampling cylinder 111 needs to be sampled, the movable plate 120 can be moved away from the beam 110 to prevent the column 620 from affecting the downward movement of the beam 110.

[0037] Combine Figure 7-Figure 9 As shown, in this embodiment, a movable piston plate 720 is provided in the water storage chamber 710, and a plurality of water leakage holes 900 are relatively provided on the piston plate 720. One end of the water outlet pipe 810 is fixedly connected to the water leakage hole 900, and the other end of the extension rod 640 is fixedly connected to the piston plate 720. The extension rod 640 moves downward to drive the water in the water storage chamber 710 to be sprayed out through the water outlet pipe 810. The bottom end of the water storage chamber 710 is also provided with a spring 712 for pushing the piston plate 720 to move upward.

[0038] In this embodiment, when the sampling tube 111 moves downward and contacts the extension rod 640, it can drive the piston plate 720 to move downward, causing the volume of the water storage chamber 710 at the lower end of the piston plate 720 to decrease. The water in the water storage chamber 710 at the lower end of the piston plate 720 can be sprayed out from the water outlet pipe 810 through the leakage hole 900. When the sampling tube 111 moves upward, the spring 712 can drive the piston plate 720 to move upward and return to its original position for subsequent use. During this process, no additional power source is required, and the downward movement of the sampling tube 111 is sufficient. Specifically, the side wall of the water storage chamber 710 is provided with an openable and closable valve. After the spraying of the sampling tube 111 is completed, the external water pipe can be connected to the valve to replenish the water in the water storage chamber 710.

[0039] Combine Figures 6-10As shown, in this embodiment, a top cover 840 is provided at the opening of the water storage chamber 710, and a driving cylinder 820 with one end extending and rotatable is provided in the top cover 840. The cleaning rod 631 is provided on the side wall of the driving cylinder 820 outside the water storage chamber 710. The outer wall of the extension rod 640 is provided with spiral grooves 700 along its axial direction, and the inner wall of the driving cylinder 820 is provided with a sliding rod 1000 sliding in the spiral groove 700. The extension rod 640 moves downward to drive the sliding rod 1000 to slide in the spiral groove 700, thereby rotating the driving cylinder 820.

[0040] In this embodiment, the driving cylinder 820 is rotatably mounted in the top cover 840 via a bearing. The top cover 840 is detachably mounted to the opening of the water storage chamber 710 via screws. Since the driving cylinder 820 is restricted by the bearing, it can only rotate on the top cover 840 and cannot be raised or lowered. When the extension rod 640 moves downward, the sliding rod 1000 slides in the spiral groove 700, causing the driving cylinder 820 to rotate, thereby driving the cleaning rod 631 to rotate, thereby crushing the rock and soil sample residue that falls from the sampling cylinder 111, preventing the rock and soil sample residue from being stuck between the sampling cylinder 111 and the column 620. The extension rod 640 is provided with a retractable bellows 641 on its outer sleeve, thereby preventing the rock and soil sample residue in the sampling tube 111 from getting stuck in the spiral groove 700 and affecting subsequent use.

[0041] Combine Figure 6-Figure 8 As shown, in this embodiment, a plurality of strip grooves 800 are provided on the side wall of the column 620 along its axial direction corresponding to the water outlet pipe 810, an elastic block 811 is provided in the strip groove 800, and a rotatable shaft 812 is also provided in the strip groove 800. The shaft 812 is fixedly connected to the side wall of the water outlet pipe 810, and a spiral blade 821 is provided on the driving cylinder 820 located in the water storage chamber 710 along its axial direction. The driving cylinder 820 rotates to drive the spiral blade 821 to contact the water outlet pipe 810 in turn to make it swing.

[0042] In this embodiment, connecting holes for receiving the rotating shaft 812 are provided in the strip groove 800. Thus, the rotating shaft 812 is rotatable in the strip groove 800. When the driving cylinder 820 rotates and drives the spiral blades 821 to rotate, the spiral blades 821 successively contact the water outlet pipe 810, causing it to swing upward. When the spiral blades 821 fall off the water outlet pipe 810, the elastic force of the elastic block 811 causes the water outlet pipe 810 to swing downward. Specifically, the water outlet pipe 810 includes a soft tube portion and a hard tube portion. The portion contacted by the spiral blade 821 is the hard tube portion. Thus, when the spiral blade 821 contacts the hard tube portion, the portion of the hard tube portion located inside the water storage chamber 710 moves downward, cooperating with the rotating shaft 812, thereby causing the portion of the hard tube portion located outside the water storage chamber 710 to move upward. The portion of the water outlet pipe 810 that contacts the piston plate 720 is the soft tube portion. Thus, when the piston plate 720 moves downward, the water outlet pipe 810 can be extended accordingly. Among them, in order to prevent the piston plate 720 from moving upward excessively, causing the water outlet pipe 810 to be squeezed and affecting subsequent use, the side wall of the water storage chamber 710 is threadedly connected to the limit ring 830, and the piston plate 720 can only move below the limit ring 830. In order to prevent the piston plate 720 from rotating accidentally during movement, an arc groove 901 is relatively provided on the piston plate 720, and a limit bar 711 sliding in the arc groove 901 is relatively provided on the side wall of the water storage chamber 710.

[0043] Combine Figures 6-11 As shown, in this embodiment, a drive shell 600 is provided on the movable plate 120, and a drive cavity is provided in the drive shell 600. A rotatable first gear 1100, a second gear 1101 and a third gear 1102 are relatively provided in the drive cavity. The first gear 1100 is meshed with the second gear 1101, and the second gear 1101 is meshed with the third gear 1102. One end of the rotating shaft 610 extends into the drive shell 600 and is fixedly connected to the third gear 1102.

[0044] In this embodiment, a third motor 601 is provided on the drive housing 600. The output shaft of the third motor 601 extends into the drive cavity and is fixedly connected to the first gear 1100. When the third motor 601 is started, it can drive the first gear 1100, the second gear 1101, and the third gear 1102 to rotate, thereby driving the rotating shaft 610 to rotate, causing the knocking rod 611 on the rotating shaft 610 to rotate and knock the outer wall of the sampling cylinder 111. The third motor 601 is a waterproof motor, which is not easily affected by muddy water falling from the inner wall of the sampling tube 111. Specifically, a receiving groove is provided in the rotating shaft 610, and a mounting rod is provided on the knocking rod 611. The mounting rod is rotatably installed in the receiving groove through a bearing, and a torsion spring is also provided in the receiving groove for pulling the knocking rod 611 close to one side wall of the receiving groove. As a result, the knocking rod 611 can swing in the receiving groove. When one end of the knocking rod 611 contacts the sampling tube 111, the knocking rod 611 can swing toward the other side wall of the receiving groove to avoid the sampling tube 111. When the knocking rod 611 falls off the knocking rod 611, under the tension of the torsion spring, one end of the knocking rod 611 can extend out of the receiving groove for subsequent use.

[0045] Combine Figures 1-11As shown, in this embodiment, a rotating disk 602 is provided on the second gear 1101 through a connecting ring, one end of the connecting ring passes through the drive shell 600 and extends out of the drive cavity, and a scraper 603 is provided on the rotating disk 602, and the scraper 603 rotates to scrape the inner wall of the sampling tube 111.

[0046] In this embodiment, when the second gear 1101 rotates with the first gear 1100, it can also drive the rotating disk 602 and the scraper 603 to rotate, scraping the inner wall of the sampling tube 111 to remove the rock and soil sample residue; The rotating disk 602 can also block the opening of the driving cavity for the connecting ring to pass through, preventing the residue and muddy water from the inner wall of the sampling tube 111 from entering the driving cavity; Specifically, the bottom end of the column 620 passes through the drive shell 600 and extends into the movable plate 120. The second gear 1101 is rotatably installed on the part of the column 620 located in the drive cavity through a bearing. As a result, the rotating disk 602 can rotate coaxially with the column 620, thereby scraping the inner wall of the sampling tube 111.

[0047] The present invention also provides a sampling method for the above-mentioned geotechnical exploration sampling device, comprising the following specific steps: S1. Move the base plate 100 to the desired position, start the first motor 310 to drive the driving cylinder 820 to rotate, start the second motor 102 to drive the crossbeam 110 to move downward, so that the sampling cylinder 111 passes through the base plate 100 and contacts the ground to collect rock and soil samples; S2. Turn off the first motor 310 and start the second motor 102 to move the crossbeam 110 upward. Take out the rock and soil sample in the sampling tube 111. Move the movable plate 120 to the bottom end of the crossbeam 110. Move the clamping block 500 to the top of the movable plate 120. Tighten the thumb screw 501 so that it extends into the second positioning hole 402. Start the second motor 102 to move the crossbeam 110 downward so that the sampling tube 111 contacts the extension rod 640. The downward movement of the extension rod 640 drives the piston plate 720 downward. The water in the water storage chamber 710 is sprayed out through the water outlet pipe 810 to spray the inner wall of the sampling tube 111. S3. The extension rod 640 continues to move downward, and the sliding rod 1000 slides in the spiral groove 700, driving the driving cylinder 820 and the cleaning rod 631 to rotate. The cleaning rod 631 crushes the rock and soil sample residues that fall off the inner wall of the sampling cylinder 111. The driving cylinder 820 drives the spiral blade 821 to rotate. The spiral blade 821 contacts the water outlet pipe 810 in turn, causing it to swing, thereby spraying different heights of the inner wall of the sampling cylinder 111. S4. Start the third motor 601 to drive the first gear 1100 to rotate, causing the second gear 1101 and the third gear 1102 to rotate, driving the rotating shaft 610 to rotate, causing the knocking rod 611 to rotate accordingly, knocking the outer wall of the sampling tube 111 to remove rock and soil residues on the inner wall of the sampling tube 111; S5. After the inside of the sampling tube 111 is cleaned, the second motor 102 is started to drive the beam 110 upward, and the clamping block 500 is moved. The hand screw 501 is tightened to make it extend into the first positioning hole 401, and the movable plate 120 is moved away from the beam 110 and fixed to facilitate subsequent sampling.

[0048] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A geotechnical exploration sampling device, comprising a base plate (100), a bracket (101) disposed on the base plate (100), a liftable crossbeam (110) disposed on the bracket (101), and a movable and rotatable sampling tube (111) disposed on the crossbeam (110), characterized in that: A movable cleaning mechanism is provided on the bottom plate (100), and the cleaning mechanism includes a movable plate (120) provided on the bottom plate (100) and movable, a column (620) is provided on the movable plate (120), a water storage chamber (710) with an upper end opening is provided in the column (620), and the water storage chamber (710) is used to store water, a plurality of swingable water outlet pipes (810) are relatively provided on the column (620), and an extension rod (640) extending from one end is provided in the water storage chamber (710), and the extension rod (640) moves downward to drive the water in the water storage chamber (710) to be sprayed out through the water outlet pipe (810), thereby The inner wall of the sampling tube (111) is sprayed, and a rotatable cleaning rod (631) is also provided on the column (620). The extension rod (640) moves downward to drive the cleaning rod (631) to rotate, thereby crushing the residue on the inner wall of the sampling tube (111). The rotation of the cleaning rod (631) is used to drive the water outlet pipe (810) to swing. A rotatable rotating shaft (610) is also provided on the movable plate (120). A plurality of rotatable knocking rods (611) are relatively provided on the rotating shaft (610). The rotating shaft (610) is used to drive the knocking rods (611) to knock the outer wall of the sampling tube (111).

2. A geotechnical investigation sampling device according to claim 1, characterized in that: A limiting groove (300) is provided in the bracket (101) along its height direction, and a limiting block sliding in the limiting groove (300) is provided at the side wall opposite to the cross beam (110). A rotatable rotating rod (302) is provided in the limiting groove (300) in the bracket (101) on one side, and the rotating rod (302) is threadedly passed through the limiting block on one side of the cross beam (110). A guide rod (301) is provided in the limiting groove (300) in the bracket (101) on the other side, and the guide rod (301) passes through the limiting block on the other side of the cross beam (110). The rotating rod (302) rotates to drive the cross beam (110) to rise and fall along the axial direction of the rotating rod (302).

3. A geotechnical investigation sampling device according to claim 2, characterized in that: The crossbeam (110) is provided with a slot (400) along its length direction, a movable block (500) is provided in the slot (400), a first positioning hole (401) and a second positioning hole (402) are provided in the slot (400) relative to each other, a rotatable hand screw (501) is provided on the block (500), one end of the hand screw (501) can be inserted into the first positioning hole (401) or the second positioning hole (402), and one end of the hand screw (501) is inserted into the first positioning hole (401) or the second positioning hole (402) for fixing the position of the block (500).

4. A geotechnical investigation sampling device according to claim 3, characterized in that: A first motor (310) is provided on the clamping block (500), and the sampling cylinder (111) is provided on an output shaft of the first motor (310).

5. The geotechnical investigation sampling device according to claim 1, characterized in that: A movable piston plate (720) is provided in the water storage chamber (710), and a plurality of water leakage holes (900) are provided on the piston plate (720). One end of the water outlet pipe (810) is fixedly connected to the water leakage hole (900), and the other end of the extension rod (640) is fixedly connected to the piston plate (720). The extension rod (640) moves downward to drive the water in the water storage chamber (710) to be sprayed out through the water outlet pipe (810). A spring (712) is also provided at the bottom end of the water storage chamber (710) for pushing the piston plate (720) upward.

6. A geotechnical investigation sampling device according to claim 5, characterized in that: A top cover (840) is provided at the opening of the water storage chamber (710), and a driving cylinder (820) with one end extending and rotatable is provided in the top cover (840). A cleaning rod (631) is provided on the side wall of the driving cylinder (820) outside the water storage chamber (710). The outer side wall of the extension rod (640) is provided with spiral grooves (700) along its axial direction. The inner side wall of the driving cylinder (820) is provided with a sliding rod (1000) that slides in the spiral groove (700). The extension rod (640) moves downward to drive the sliding rod (1000) to slide in the spiral groove (700), thereby rotating the driving cylinder (820).

7. A geotechnical investigation sampling device according to claim 6, characterized in that: A plurality of strip grooves (800) are provided on the side wall of the column (620) along its axial direction corresponding to the water outlet pipe (810), an elastic block (811) is provided in the strip groove (800), and a rotatable shaft (812) is also provided in the strip groove (800), and the shaft (812) is fixedly connected to the side wall of the water outlet pipe (810). A spiral blade (821) is provided on the driving cylinder (820) located in the water storage chamber (710) along its axial direction, and the driving cylinder (820) rotates to drive the spiral blades (821) to contact the water outlet pipe (810) in sequence to cause it to swing.

8. The geotechnical investigation and sampling device according to claim 7, characterized in that: A drive housing (600) is provided on the movable plate (120), and a drive cavity is provided in the drive housing (600). A rotatable first gear (1100), a second gear (1101) and a third gear (1102) are relatively provided in the drive cavity. The first gear (1100) is meshed with the second gear (1101), and the second gear (1101) is meshed with the third gear (1102). One end of the rotating shaft (610) extends into the drive housing (600) and is fixedly connected to the third gear (1102).

9. The geotechnical investigation sampling device according to claim 4, characterized in that: A limiting ring (830) for limiting the moving distance of the piston plate (720) is provided in the water storage chamber (710); an arc-shaped groove (901) is relatively provided on the piston plate (720); and a limiting bar (711) is relatively provided on the side wall of the water storage chamber (710) and slides in the arc-shaped groove (901).

10. A geotechnical investigation sampling method, characterized by: A geotechnical exploration sampling device according to any one of claims 1 to 9 is used, which specifically comprises the following steps: S1. Move the bottom plate (100) to a desired position, start the first motor (310) to drive the driving cylinder (820) to rotate, and move the crossbeam (110) downward so that the sampling cylinder (111) passes through the bottom plate (100) and contacts the ground to collect rock and soil samples; S2. Turn off the first motor (310), move the crossbeam (110) upward, take out the rock and soil sample in the sampling tube (111), move the movable plate (120) to the bottom end of the crossbeam (110), move the clamping block (500) to the top of the movable plate (120), tighten the hand screw (501) so that it extends into the second positioning hole (402), move the crossbeam (110) downward, make the sampling tube (111) contact the extension rod (640), and the extension rod (640) moves downward to drive the piston plate (720) to move downward. The water in the water storage chamber (710) is sprayed out through the water outlet pipe (810) to spray the inner wall of the sampling tube (111); S3, the extension rod (640) continues to move downward, the sliding rod (1000) slides in the spiral groove (700), driving the driving cylinder (820) and the cleaning rod (631) to rotate, the cleaning rod (631) crushes the rock and soil sample residues that fall off the inner wall of the sampling cylinder (111), the driving cylinder (820) drives the spiral blade (821) to rotate, and the spiral blade (821) contacts the water outlet pipe (810) in turn to make it swing, so as to spray different positions of the inner wall of the sampling cylinder (111); S4, rotating the first gear (1100) to drive the second gear (1101) and the third gear (1102) to rotate, driving the rotating shaft (610) to rotate, causing the knocking rod (611) to rotate accordingly, knocking the outer wall of the sampling tube (111) so that rock and soil residues on the inner wall of the sampling tube (111) fall off; S5. After the interior of the sampling tube (111) is cleaned, the crossbeam (110) is moved upward, and the clamping block (500) is moved. The hand screw (501) is tightened to extend it into the first positioning hole (401), and the movable plate (120) is moved away from the crossbeam (110) and fixed to facilitate subsequent sampling.

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