Geological exploration earth surface core drilling and sampling device and method thereof

Abstract

The invention relates to the technical field of geological exploration, and discloses a geological exploration earth surface core drilling sampling device and a method thereof.The geological exploration earth surface core drilling sampling device comprises a bottom plate, a vertical plate is fixedly installed at the top end of the bottom plate, a lead screw is rotatably connected to the front end of the vertical plate, a first motor is fixedly installed at the top end of the vertical plate, and a guide rod is fixedly installed at the front end of the vertical plate; and the surface of the lead screw is meshed with a meshing plate. According to the invention, the bottom end of the extension rod is sleeved with the positioning sleeves, and the plurality of positioning sleeves are fixed by the racks, after the top end of a sampling drill bit is inserted below the bottom plate, the sampling drill bit is detached, a motor I drives a meshing plate to rise to be in contact with an uplifting rod, and a push rod I can be pulled to move upwards through the uplifting rod, so that a moving frame is pushed backwards; when the sampling device is used, the rack and the positioning sleeve are driven to move forwards, so that the extension rod is directly moved to the position above the sampling drill bit, only the connected pin needs to be installed at the moment, an operator does not need to move the extension rod, and the labor burden is reduced.

Description

Technical Field

[0001] The present invention relates to the field of geological prospecting technology, and more particularly to a geological prospecting surface core sampling device and method thereof. Background Art

[0002] Before construction of shallow buried tunnel surface, roadbed and borrow pit, geological survey is required to provide accurate and sufficient geological data for construction, so that construction personnel can adjust the construction process, thereby reducing and preventing the occurrence of engineering accidents.

[0003] Most sampling devices in the prior art use a driven sampling drill bit to insert into the ground for sampling. However, when sampling in deeper areas, it is necessary to connect an extension rod to the sampling drill bit to lengthen the sampling drill bit. When connecting the extension rod, the operator is required to install the extension rod in place, which increases the labor burden. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a surface core sampling device for geological exploration and a method thereof, which has the advantage of reducing the labor burden.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a surface core sampling device for geological exploration, comprising a bottom plate, a vertical plate fixedly mounted on the top of the bottom plate, a lead screw rotatably connected to the front end of the vertical plate, a motor 1 fixedly mounted on the top of the vertical plate, a guide rod fixedly mounted on the front end of the vertical plate, and an engaging plate meshing with the surface of the lead screw;

[0006] The top of the meshing plate is fixedly mounted with a second motor, the output end of the second motor is fixedly mounted with a driving block, the bottom end of the driving block is detachably connected with a sampling drill bit, the top of the bottom plate is fixedly mounted with a positioning bar, and the top end of the positioning bar is placed with an extension rod;

[0007] The bottom end of the vertical plate is movably connected with a positioning sleeve, the right end of the positioning sleeve is fixedly installed with a rack, the top of the bottom plate is rotatably connected with a gear, the top of the bottom plate is fixedly installed with a hydraulic pipe, the bottom end of the hydraulic pipe is movably connected with a moving frame, the rear end of the moving frame is fixedly installed with a moving bar, the left end of the moving bar is rotatably connected with a driving gear block, a spring sheet is fixedly installed between the driving gear block and the moving bar, the rear end of the hydraulic pipe is movably connected with a push rod 1, the surface of the push rod 1 is sleeved with a return spring, and the top of the push rod 1 is fixedly installed with a lifting rod.

[0008] As a preferred technical solution of the present invention, the engagement plate is movably connected to the surface of the guide rod, the motor is connected to the lead screw through a transmission, and the drive block and the sampling drill bit are connected by pins.

[0009] As a preferred technical solution of the present invention, the extension rod is inserted into the positioning sleeve, and the shape of the bottom end of the extension rod is consistent with the shape of the bottom end of the driving block.

[0010] As a preferred technical solution of the present invention, the rack is meshed with the gear, the other end of the rack is meshed with the driving gear block, and the length of the rack is greater than the length of the positioning sleeve.

[0011] As a preferred technical solution of the present invention, the top end of the lifting rod is "L"-shaped, and the top end of the lifting rod is located above the engaging plate and contacts the engaging plate.

[0012] As a preferred technical solution of the present invention, a water connection box is fixedly installed at the front end of the vertical plate, a hollow rod is fixedly installed at the rear end of the water connection box, and a spray head is fixedly installed in the middle of the hollow rod.

[0013] As a preferred technical solution of the present invention, two square grooves are provided on the meshing plate, and the projections of the hollow rod and the nozzle are both located in the square grooves.

[0014] As a preferred technical solution of the present invention, a water tank is fixedly installed on the top of the base plate, the inner cavity of the water tank is movably connected with an extrusion plate, the top of the extrusion plate is fixedly installed with a connecting rod, the front end of the water tank is fixedly installed with a connecting water pipe, and the front end of the water tank is fixedly installed with a water filling pipe and a one-way air inlet pipe.

[0015] As a preferred technical solution of the present invention, the bottom end of the connecting rod is fixedly connected to the lifting rod, the connecting water pipe is connected to the connecting water box, and the one-way air inlet pipe is located below the extrusion plate.

[0016] A method for using a surface core sampling device for geological exploration comprises the following steps:

[0017] Move the device to the desired position, and then fix the sampling drill bit under the driving block with a pin;

[0018] Start motor 1 and motor 2, motor 1 drives the lead screw to rotate, and then drives the meshing plate to move downward through the meshing of the lead screw and the meshing plate, motor 2 directly drives the driving block to rotate, and then drives the sampling drill bit to rotate, and finally realizes that the sampling drill bit rotates and moves downward, and the sampling drill bit is inserted into the ground when moving downward, and then samples the ground soil. When the sampling depth exceeds the length of the sampling drill bit, the meshing plate transports the sampling drill bit to the bottom, and the connecting pin between the driving block and the sampling drill bit is removed, and the lead screw rotates in the opposite direction to drive the driving block to move upward. When the meshing plate contacts the upper lifting rod, it can drive the upper lifting rod to move upward, and then pull the push rod 1 to move upward, and drive the connecting rod to move upward. The upward movement of the connecting rod can drive the extrusion plate to move upward in the water tank, so that the outside air enters the water tank through the one-way air intake pipe, and at this time, motor 2 stops;

[0019] The upward movement of the push rod 1 can push the hydraulic oil in the hydraulic pipe to move, push the moving frame and the moving bar backward, and drive the rack to move forward through the meshing of the driving tooth block and the gear, and then pull the extension rod forward to the top of the sampling drill bit through the positioning sleeve. At this time, it is only necessary to connect the upper and lower ends of the extension rod with the driving block and the sampling drill bit using pins respectively. After the connection is completed, the meshing plate moves down again, and the motor 2 is turned on again to drive the extension rod and the sampling drill bit to rotate, so that the sampling drill bit continues to be inserted downward into the soil for sampling; at this time, the lifting rod is no longer in contact with the meshing plate, and resets downward under the elasticity of the reset spring, thereby driving the moving frame to move forward and driving the connecting rod to move downward. When the connecting rod moves downward, the water in the water tank can be squeezed out into the connecting water box through the connecting water pipe through the extrusion plate, and finally sprayed on the surface of the extension rod through the hollow rod, and dripped on the soil surface through the extension rod, so as to soften the soil and reduce the resistance of the extension rod to move downward;

[0020] When the moving frame moves forward, the inclined surface of the driving gear block will directly contact the teeth of the gear, press and tilt toward the spring sheet, and stagger with the gear, making it impossible to drive the gear to rotate;

[0021] After the sampling is completed, the extension rod and the sampling drill bit can be pulled out by driving the lead screw to reverse through the motor. At this time, you only need to take out the sample in the sampling drill bit to analyze and detect the soil conditions, provide the soil conditions of the construction surface, and provide accurate geological data.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention sleeves a positioning sleeve on the bottom end of the extension rod and uses a rack to fix multiple positioning sleeves. When the top end of the sampling drill bit is inserted under the bottom plate, the sampling drill bit is removed, and the motor drives the meshing plate to rise until it contacts the upper lifting rod. The upper lifting rod can be used to pull the push rod up, thereby pushing the movable frame backward, thereby driving the rack and the positioning sleeve forward, so that the extension rod is directly moved to the top of the sampling drill bit. At this time, only the connecting pin needs to be installed, and the operator does not need to move the extension rod, thereby reducing the labor burden.

[0024] 2. The present invention connects a connecting rod above the lifting rod. When the lifting rod moves upward, it can drive the connecting rod to move upward together, and draw the outside air into the water tank. After the lifting rod moves down, the water in the water tank can be squeezed into the connecting water box, and then sprayed on the surface of the extension rod or the sampling drill bit through the nozzle, and the water drops on the ground to soften the soil on the ground to reduce the resistance after the sampling drill bit and the extension rod are inserted into the soil, which can more effectively improve the efficiency of sampling and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a cross-sectional schematic diagram of the water tank structure of the present invention;

[0027] Figure 3 For the present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0028] Figure 4 This is a schematic diagram of the rack connection structure of the present invention;

[0029] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point B in the middle;

[0030] Figure 6 This is a schematic diagram of the explosion connection of the sampling drill bit of the structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the hollow rod connection structure of the present invention.

[0032] In the figure: 1, bottom plate; 2, vertical plate; 3, lead screw; 4, motor 1; 5, guide rod; 6, meshing plate; 7, motor 2; 8, drive block; 9, sampling drill bit; 10, positioning sleeve; 11, rack; 12, positioning bar; 13, extension rod; 14, gear; 15, moving bar; 16, driving gear block; 17, spring sheet; 18, hydraulic pipe; 19, moving frame; 20, push rod 1; 21, reset spring; 22, lifting rod; 23, connecting water box; 24, hollow rod; 25, nozzle; 26, water tank; 27, connecting rod; 28, extrusion plate; 29, connecting water pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 7 As shown, the present invention provides a surface core sampling device for geological exploration, comprising a bottom plate 1, a vertical plate 2 is fixedly installed on the top of the bottom plate 1, a lead screw 3 is rotatably connected to the front end of the vertical plate 2, a motor 4 is fixedly installed on the top of the vertical plate 2, a guide rod 5 is fixedly installed on the front end of the vertical plate 2, and an engaging plate 6 is meshed on the surface of the lead screw 3;

[0035] A motor 2 7 is fixedly mounted on the top of the meshing plate 6, a driving block 8 is fixedly mounted on the output end of the motor 2 7, a sampling drill 9 is detachably connected to the bottom end of the driving block 8, a positioning bar 12 is fixedly mounted on the top of the bottom plate 1, and an extension rod 13 is placed on the top of the positioning bar 12;

[0036] The bottom end of the vertical plate 2 is movably connected with a positioning sleeve 10, the right end of the positioning sleeve 10 is fixedly installed with a rack 11, the top of the bottom plate 1 is rotatably connected with a gear 14, the top of the bottom plate 1 is fixedly installed with a hydraulic pipe 18, the bottom end of the hydraulic pipe 18 is movably connected with a moving frame 19, the rear end of the moving frame 19 is fixedly installed with a moving bar 15, the left end of the moving bar 15 is rotatably connected with a driving tooth block 16, a spring sheet 17 is fixedly installed between the driving tooth block 16 and the moving bar 15, the rear end of the hydraulic pipe 18 is movably connected with a push rod 20, the surface of the push rod 20 is sleeved with a return spring 21, and the top of the push rod 20 is fixedly installed with an upper lifting rod 22;

[0037] By sleeve-fitting the positioning sleeve 10 on the bottom end of the extension rod 13 and fixing multiple positioning sleeves 10 with the rack 11, when the top end of the sampling drill bit 9 is inserted under the bottom plate 1, the sampling drill bit 9 is removed, and the motor 4 drives the engaging plate 6 to rise until it contacts the lifting rod 22. The push rod 20 can be pulled up by the lifting rod 22, and then the movable frame 19 is pushed backward, thereby driving the rack 11 and the positioning sleeve 10 forward, so that the extension rod 13 is directly moved to the top of the sampling drill bit 9. At this time, only the connecting pin needs to be installed, and the operator does not need to move the extension rod 13, thereby reducing the labor burden.

[0038] Among them, the meshing plate 6 is movably connected to the surface of the guide rod 5, the motor 1 4 is connected to the lead screw 3, and the driving block 8 and the sampling drill bit 9 are connected by pins;

[0039] Motor 1 4 drives the lead screw 3 to rotate, and then drives the meshing plate 6 to move downward through the meshing of the lead screw 3 and the meshing plate 6. Motor 2 7 directly drives the driving block 8 to rotate, and then drives the sampling drill bit 9 to rotate, and finally the sampling drill bit 9 rotates and moves downward. The sampling drill bit 9 is inserted into the ground when moving downward, and then samples the ground soil.

[0040] The extension rod 13 is inserted into the positioning sleeve 10, and the shape of the bottom end of the extension rod 13 is consistent with the shape of the bottom end of the driving block 8;

[0041] Using a connection form of the same shape can make the connection more convenient. After the extension rod 13 moves downward, the drive block 8 can also pass through the positioning sleeve 10, and then completely transport the extension rod 13 to the bottom of the positioning sleeve 10, avoiding interference between the forward movement of the positioning sleeve 10 and the downward movement of the extension rod 13. The setting of the positioning strip 12 can limit the movement of the extension rod 13, ensuring that the axis of the pin connecting hole is in a horizontal state, which is convenient for subsequent connection.

[0042] The rack 11 is meshed with the gear 14, and the other end of the rack 11 is meshed with the driving gear block 16. The length of the rack 11 is greater than the length of the positioning sleeve 10.

[0043] The spring sheet 17 connected to the driving gear block 16 and the moving bar 15 is an elastic metal sheet in an arc shape, which is a prior art. Figure 5 As shown, the spring sheet 17 has been stretched forward to the frontmost position and cannot be stretched forward any further. Therefore, when the movable bar 15 moves backward, the gear 14 can be pushed to rotate. The spring sheet 17 has the elasticity to bend backward and contract. When the movable bar 15 moves forward, the driving tooth block 16 can be bent toward the spring sheet 17 and staggered with the gear 14.

[0044] The top end of the lifting rod 22 is "L" shaped, and the top end of the lifting rod 22 is located above the meshing plate 6 and contacts the meshing plate 6;

[0045] The "L"-shaped setting of the top of the lifting rod 22 can make the top of the lifting rod 22 located on the travel path of the engaging plate 6, ensuring that the lifting rod 22 can be stably lifted when the engaging plate 6 moves upward.

[0046] The front end of the vertical plate 2 is fixedly mounted with a water box 23, the rear end of the water box 23 is fixedly mounted with a hollow rod 24, and the middle of the hollow rod 24 is fixedly mounted with a nozzle 25;

[0047] The water entering the water box 23 is sprayed onto the surface of the extension rod 13 or the sampling drill bit 9 through the nozzle 25, and the water drops onto the ground, thereby softening the soil on the ground to a certain extent, reducing the resistance after the sampling drill bit 9 and the extension rod 13 are inserted into the soil, and can more effectively improve the efficiency of sampling and detection.

[0048] There are two square grooves on the meshing plate 6, and the projections of the hollow rod 24 and the nozzle 25 are both located in the square grooves;

[0049] By setting two square grooves, the up and down movement of the hollow rod 24 and the nozzle 25 and the meshing plate 6 can be staggered to avoid the hollow rod 24 and the nozzle 25 interfering with the downward movement of the meshing plate 6. Similarly, an "L"-shaped bracket is set at the bottom end of the front side of the vertical plate 2. The "L"-shaped bracket is connected and supported by the connecting water box 23, and at the same time provides space for the positioning sleeve 10 and the rack 11 to move forward to avoid interference.

[0050] Among them, a water tank 26 is fixedly installed at the top of the bottom plate 1, and an extrusion plate 28 is movably connected to the inner cavity of the water tank 26. A connecting rod 27 is fixedly installed at the top of the extrusion plate 28. A connecting water pipe 29 is fixedly installed at the front end of the water tank 26. A water adding pipe and a one-way air inlet pipe are fixedly installed at the front end of the water tank 26.

[0051] By connecting the connecting rod 27 above the lifting rod 22, when the lifting rod 22 moves upward, the connecting rod 27 can be driven to move upward together, and the outside air can be sucked into the water tank 26. After the lifting rod 22 moves downward, the water in the water tank 26 can be squeezed into the connecting water box 23, thereby realizing the delivery of the water in the water tank 26 during the downward movement of the engaging plate 6.

[0052] The bottom end of the connecting rod 27 is fixedly connected to the lifting rod 22, the connecting water pipe 29 is connected to the connecting water box 23, and the one-way air inlet pipe is located below the extrusion plate 28;

[0053] By setting up a one-way air inlet pipe, since the density of air is smaller than that of water, it is possible to achieve a situation in which the lower layer in the water tank 26 is water and the upper layer is air. Even after the water in the water tank 26 is reduced, the water can be squeezed out by squeezing the air, and the starting position of the squeezing plate 28 will not change.

[0054] A method for using a surface core sampling device for geological exploration comprises the following steps:

[0055] Move the device to the required designated position, and then fix the sampling drill bit 9 under the driving block 8 with a pin;

[0056] Start motor 1 4 and motor 2 7, motor 1 4 drives lead screw 3 to rotate, and then drives meshing plate 6 to move downward through meshing of lead screw 3 and meshing plate 6, motor 2 7 directly drives driving block 8 to rotate, and then drives sampling drill bit 9 to rotate, and finally realizes that sampling drill bit 9 rotates and moves downward, and sampling drill bit 9 is inserted into the ground when moving downward, and then samples the ground soil. When the sampling depth exceeds the length of sampling drill bit 9, meshing plate 6 transports sampling drill bit 9 to the bottom, and removes the connecting pin between driving block 8 and sampling drill bit 9, lead screw 3 rotates in the opposite direction to drive driving block 8 to move upward, and when meshing plate 6 contacts with upper lifting rod 22, it can drive upper lifting rod 22 to move upward, and then pull push rod 1 20 to move upward, and drive connecting rod 27 to move upward, and the upward movement of connecting rod 27 can drive extrusion plate 28 to move upward in water tank 26, so that the outside air enters water tank 26 through the one-way air inlet pipe, and motor 2 7 stops at this time;

[0057] The upward movement of the push rod 1 20 can push the hydraulic oil in the hydraulic pipe 18 to move, push the moving frame 19 and the moving bar 15 backward, and drive the rack 11 to move forward by engaging the driving tooth block 16 with the gear 14, and then pull the extension rod 13 forward to the top of the sampling drill bit 9 through the positioning sleeve 10. At this time, it is only necessary to connect the upper and lower ends of the extension rod 13 with the driving block 8 and the sampling drill bit 9 using pins respectively. After the connection is completed, the meshing plate 6 moves down again, and the motor 2 7 is turned on again to drive the extension rod 13 and the sampling drill bit 9 to rotate. The sampling drill bit 9 is further inserted downward into the soil for sampling; at this time, the lifting rod 22 is no longer in contact with the meshing plate 6, and is reset downward under the elastic action of the reset spring 21, thereby driving the moving frame 19 to move forward and driving the connecting rod 27 to move downward. When the connecting rod 27 moves downward, the water in the water tank 26 can be squeezed into the connecting water box 23 through the connecting water pipe 29 through the squeezing plate 28, and finally sprayed on the surface of the extension rod 13 through the hollow rod 24, and dripped onto the soil surface through the extension rod 13, so as to soften the soil and reduce the resistance of the extension rod 13 to move downward;

[0058] When the moving frame 19 moves forward, the inclined surface of the driving tooth block 16 will directly contact the teeth of the gear 14, press and tilt toward the spring sheet 17, and stagger with the gear 14, and cannot drive the gear 14 to rotate;

[0059] After the sampling is completed, the motor 4 drives the screw 3 to reverse, and the extension rod 13 and the sampling drill bit 9 can be pulled out. At this time, it is only necessary to take out the sample in the sampling drill bit 9 to analyze and detect the soil conditions, provide the soil conditions of the construction surface, and provide accurate geological data.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface core sampling device for geological exploration, comprising a bottom plate (1), characterized in that: A vertical plate (2) is fixedly mounted on the top of the bottom plate (1), a lead screw (3) is rotatably connected to the front end of the vertical plate (2), a motor (4) is fixedly mounted on the top of the vertical plate (2), a guide rod (5) is fixedly mounted on the front end of the vertical plate (2), and a meshing plate (6) is meshed on the surface of the lead screw (3); A second motor (7) is fixedly mounted on the top of the meshing plate (6), a driving block (8) is fixedly mounted on the output end of the second motor (7), a sampling drill bit (9) is detachably connected to the bottom end of the driving block (8), a positioning bar (12) is fixedly mounted on the top of the bottom plate (1), and an extension rod (13) is placed on the top end of the positioning bar (12); The bottom end of the vertical plate (2) is movably connected with a positioning sleeve (10), the right end of the positioning sleeve (10) is fixedly installed with a rack (11), the top end of the bottom plate (1) is rotatably connected with a gear (14), the top end of the bottom plate (1) is fixedly installed with a hydraulic pipe (18), the bottom end of the hydraulic pipe (18) is movably connected with a moving frame (19), the rear end of the moving frame (19) is fixedly installed with a moving bar (15), the left end of the moving bar (15) is rotatably connected with a driving tooth block (16), a spring sheet (17) is fixedly installed between the driving tooth block (16) and the moving bar (15), the rear end of the hydraulic pipe (18) is movably connected with a push rod (20), the surface of the push rod (20) is sleeved with a return spring (21), and the top of the push rod (20) is fixedly installed with an upward lifting rod (22).

2. A surface core sampling device for geological exploration according to claim 1, characterized in that: The meshing plate (6) is movably connected to the surface of the guide rod (5), the motor 1 (4) is transmission-connected to the lead screw (3), and the driving block (8) and the sampling drill bit (9) are connected by pins.

3. A surface core sampling device for geological exploration according to claim 1, characterized in that: The extension rod (13) is inserted into the positioning sleeve (10), and the shape of the bottom end of the extension rod (13) is consistent with the shape of the bottom end of the driving block (8).

4. A surface core sampling device for geological exploration according to claim 1, characterized in that: The rack (11) is meshed with the gear (14), the other end of the rack (11) is meshed with the driving gear block (16), and the length of the rack (11) is greater than the length of the positioning sleeve (10).

5. The surface core sampling device for geological exploration according to claim 1, characterized in that: The top end of the lifting rod (22) is in an "L" shape, and the top end of the lifting rod (22) is located above the engaging plate (6) and in contact with the engaging plate (6).

6. A surface core sampling device for geological exploration according to claim 1, characterized in that: A water connection box (23) is fixedly mounted on the front end of the vertical plate (2), a hollow rod (24) is fixedly mounted on the rear end of the water connection box (23), and a spray head (25) is fixedly mounted in the middle of the hollow rod (24).

7. A surface core sampling device for geological exploration according to claim 6, characterized in that: The meshing plate (6) is provided with two square grooves, and the projections of the hollow rod (24) and the nozzle (25) are both located in the square grooves.

8. The surface core sampling device for geological exploration according to claim 1, characterized in that: A water tank (26) is fixedly mounted on the top of the bottom plate (1); an inner cavity of the water tank (26) is movably connected to an extrusion plate (28); a connecting rod (27) is fixedly mounted on the top of the extrusion plate (28); a connecting water pipe (29) is fixedly mounted on the front end of the water tank (26); and a water supply pipe and a one-way air inlet pipe are fixedly mounted on the front end of the water tank (26).

9. A surface core sampling device for geological exploration according to claim 8, characterized in that: The bottom end of the connecting rod (27) is fixedly connected to the lifting rod (22), the connecting water pipe (29) is connected to the connecting water box (23), and the one-way air inlet pipe is located below the extrusion plate (28).

10. A method for using a surface core sampling device for geological exploration according to any one of claims 1 to 9, characterized in that: The steps include: Move the device to a desired position, and then fix the sampling drill bit (9) under the driving block (8) using a pin; The motor 1 (4) and the motor 2 (7) are started. The motor 1 (4) drives the lead screw (3) to rotate, and then drives the meshing plate (6) to move downward through the meshing of the lead screw (3) and the meshing plate (6). The motor 2 (7) directly drives the driving block (8) to rotate, and then drives the sampling drill bit (9) to rotate, and finally the sampling drill bit (9) is rotated and moved downward. The sampling drill bit (9) is inserted into the ground while moving downward, and then the ground soil is sampled. When the sampling depth exceeds the length of the sampling drill bit (9), the meshing plate (6) transports the sampling drill bit (9) to the bottom end. , remove the connecting pin between the driving block (8) and the sampling drill bit (9), and the lead screw (3) rotates in the opposite direction to drive the driving block (8) to move upward. When the engaging plate (6) contacts the lifting rod (22), the lifting rod (22) can be driven to move upward, thereby pulling the push rod 1 (20) to move upward, and driving the connecting rod (27) to move upward. The upward movement of the connecting rod (27) can drive the extrusion plate (28) to move upward in the water tank (26), thereby allowing the outside air to enter the water tank (26) through the one-way air inlet pipe. At this time, the motor 2 (7) is stopped; The upward movement of the push rod 1 (20) can push the hydraulic oil in the hydraulic pipe (18) to move, push the moving frame (19) and the moving bar (15) backward, and drive the rack (11) to move forward by engaging the driving tooth block (16) with the gear (14), and then pull the extension rod (13) forward to the top of the sampling drill bit (9) through the positioning sleeve (10). At this time, it is only necessary to connect the upper and lower ends of the extension rod (13) with the driving block (8) and the sampling drill bit (9) respectively using pins. After the connection is completed, the meshing plate (6) moves downward again, and the motor 2 (7) is turned on again to drive the extension rod (13) and the sampling drill bit (9) to rotate. The sampling drill bit (9) is rotated so that the sampling drill bit (9) continues to be inserted downward into the soil for sampling; at this time, the lifting rod (22) is no longer in contact with the meshing plate (6), and is reset downward under the elastic action of the reset spring (21), thereby driving the moving frame (19) to move forward and the connecting rod (27) to move downward. When the connecting rod (27) moves downward, the water in the water tank (26) can be squeezed into the connecting water box (23) through the squeezing plate (28) through the connecting water pipe (29), and finally sprayed on the surface of the extension rod (13) through the hollow rod (24), and dripped onto the soil surface through the extension rod (13), thereby softening the soil and reducing the resistance of the extension rod (13) to move downward; When the moving frame (19) moves forward, the inclined surface of the driving tooth block (16) will directly contact the teeth of the gear (14), press and tilt toward the spring sheet (17), and stagger with the gear (14), and cannot drive the gear (14) to rotate; After the sampling is completed, the lead screw (3) is driven to reverse by the motor 1 (4), and the extension rod (13) and the sampling drill bit (9) can be pulled out. At this time, it is only necessary to take out the sample in the sampling drill bit (9) to analyze and detect the soil conditions, provide the soil conditions of the construction surface, and provide accurate geological data.

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