Corer for geological exploration

Abstract

The utility model relates to the field of geological exploration, in particular to a coring device for geological exploration, which comprises a support frame arranged on a bottom plate. The moving plate is slidably arranged in the sliding groove a. The sampling outer cylinder is positioned below the moving plate; a rotating assembly for driving the sampling outer cylinder to rotate is arranged at the lower end of the moving plate; four groups of drill bits are uniformly arranged at the lower end of the sampling inner cylinder through connecting pieces, a linkage assembly for simultaneously driving the four groups of connecting pieces to rotate is arranged in the sampling outer cylinder, and the four groups of drill bits are attached to one another in a state that the linkage assembly drives the connecting pieces to rotate inwards. According to the soil sampling device, the drill bit is rotationally connected through the linkage ring, when the device needs to sample soil of different depths, the linkage ring moves downwards to drive the drill bit to contract inwards, at the moment, the drill bit does not store the soil into the sampling inner barrel in the downward drilling process, and at the moment, the drill bit rotates to collect the soil; soil of other depths cannot be collected in advance before soil of different depths is collected, and the sampling accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of geological exploration, in particular to a geological exploration coring device. Background Art

[0002] Geological survey is an investigation and research activity that uses various means and methods to survey and detect geology, determine the appropriate bearing layer, determine the foundation type based on the bearing capacity of the bearing layer, and calculate the foundation parameters. Geological survey sampling tools are an indispensable tool in the geological survey process.

[0003] A Chinese patent with announcement number CN219495698U discloses a geological survey coring device, which includes a fixed frame, a lifting mechanism is arranged inside a limiting groove, and a rotating mechanism is arranged between the inside of the limiting groove and one side of the fixed frame. The device is moved to a designated location by lifting the handle frame and inserted into the soil for fixing by stepping on two conical heads, thereby transporting the soil upward from the sampling port of the hollow shaft to the inside of the drill tube to complete the sampling. At the same time, the second bevel gear is driven to rotate by rotating the rotating rod, and the second bevel gear drives the first bevel gear to drive the threaded rod to rotate so that the threaded block drives the connecting plate to thread down on the outer surface of the threaded rod and drives the sampling mechanism to descend, thereby completing the adjustment of the required sampling depth, which is convenient for the device to perform deep sampling.

[0004] However, the above-mentioned disclosed scheme has the following shortcomings: the above-mentioned prior art moves the sampling mechanism downward to achieve deep sampling, but the drill bit starts to rotate and sample on the soil surface. When it moves to a deep layer, soil of different depths has been stored in the sampling mechanism, so the calculated results will be affected, making the basic parameters inaccurate. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that soil from other layers will be taken together during the taking process, thus causing the soil to be mixed, and a geological survey core sampling device is proposed.

[0006] The technical solution of the utility model: a geological survey coring device, comprising a bottom plate, a support frame, a movable plate, a sampling outer cylinder, a sampling inner cylinder and a drill bit;

[0007] The support frame is arranged on the bottom plate, and a slide groove a is provided on one side of the support frame; the moving plate is slidably arranged in the slide groove a, and a power component for driving the moving plate to move is arranged on the support frame; the sampling outer cylinder is located below the moving plate, and a rotating component for driving the sampling outer cylinder to rotate is arranged at the lower end of the moving plate;

[0008] The sampling inner cylinder is arranged in the sampling outer cylinder; four groups of drill bits are evenly arranged at the lower end of the sampling inner cylinder through connecting pieces, and a linkage assembly is arranged in the sampling outer cylinder to simultaneously drive the four groups of connecting pieces to rotate. When the linkage assembly drives the connecting pieces to rotate inward, the four groups of drill bits fit together.

[0009] Preferably, the power assembly includes a motor a and a threaded rod; the motor a is arranged at the upper end of the support frame; the threaded rod is rotatably arranged in the support frame, and there is no thread arrangement at the connection between the threaded rod and the support frame, one end of the threaded rod is connected to the output shaft of the motor a, and a threaded hole for the threaded rod to pass through is opened on the movable plate, and protrusions are arranged on both sides of the movable plate, and the protrusions are embedded in the grooves on both sides of the slide groove a.

[0010] Preferably, the rotating assembly includes a motor b and a slider; the slider is slidably arranged at the lower end of the movable plate; the motor b is arranged at the lower end of the slider, the lower end of the output shaft of the motor b is connected to the sampling outer cylinder, and a fastening assembly for fastening the slider is arranged on the movable plate.

[0011] Preferably, the fastening assembly includes a stud and a fastener; a slide groove b is provided on the movable plate; the stud is arranged at the upper end of the slider, and the stud passes through the slide groove b and extends out of the slide groove b upward; the fastener is threadedly connected to the stud, and the size of the fastener is larger than the width of the slide groove b.

[0012] Preferably, the linkage assembly includes a telescopic device, a telescopic rod and a linkage ring; a rotating part is arranged on the connecting part; the linkage ring is arranged around the sampling outer cylinder and the sampling inner cylinder, and contacts the outer walls of the sampling outer cylinder and the sampling inner cylinder, and the lower end of the linkage ring is rotatably connected to the rotating part through a rotating block; the telescopic device is arranged at the upper end of the sampling outer cylinder; the telescopic rod passes through the sampling outer cylinder and is connected to the output end of the telescopic device.

[0013] Preferably, handles are provided on both sides near the upper end of the support frame, grip grooves are provided on the outer sides of the handles, and multiple groups of insertion rods are provided at the lower end of the bottom plate for inserting the insertion rods into the underground stabilization equipment.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. Four groups of drill bits are rotatably arranged at the lower end of the sampling inner cylinder through a connecting piece and are rotatably connected through a linkage ring. When the equipment needs to sample soil at different depths, the linkage ring moves downward to drive the drill bit to retract inward. The four groups of drill bits retract and the side walls are pressed together. At this time, the drill bit will not store soil in the sampling inner cylinder during the downward drilling process. After reaching the specified depth, the drill bit will be opened and the soil will be collected at this time. This ensures that soil at other depths will not be collected in advance before collecting soil at different depths, thereby ensuring the accuracy of sampling.

[0016] 2. The motor b is set at the lower end of the movable plate through a sliding block, so that when the equipment is not in use, the sampling outer cylinder and the motor b are moved toward the support frame, so that the sampling outer cylinder is retracted above the bottom plate to avoid collision when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Cross-sectional view of the sampling inner barrel with the drill bit closed;

[0019] Figure 3 for Figure 1 Cross-sectional view of the sampling inner cylinder with the drill bit opened;

[0020] Figure 4 for Figure 1 Schematic diagram of drill bit structure;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of four sets of drill bits in closed state;

[0022] Figure 6 for Figure 5 Top view of the .

[0023] Figure numerals: 1. base plate; 2. support frame; 3. handle; 4. slide a; 5. motor a; 6. threaded rod; 7. movable plate; 8. slide b; 9. stud; 10. fastener; 11. sampling outer cylinder; 12. telescopic device; 13. motor b; 14. telescopic rod; 15. sampling inner cylinder; 16. linkage ring; 17. drill bit; 18. connecting part; 19. rotating part. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] like Figure 1-Figure 6 As shown, a geological survey coring device proposed by the utility model comprises a bottom plate 1, a support frame 2, a movable plate 7, a sampling outer cylinder 11, a sampling inner cylinder 15 and a drill bit 17;

[0026] The support frame 2 is arranged on the bottom plate 1, and a slide groove a4 is provided on one side of the support frame 2; the moving plate 7 is slidably arranged in the slide groove a4, and a power component for driving the moving plate to move is arranged on the support frame 2; the sampling outer cylinder 11 is located below the moving plate 7, and a rotating component for driving the sampling outer cylinder 11 to rotate is arranged at the lower end of the moving plate 7;

[0027] The sampling inner cylinder 15 is arranged in the sampling outer cylinder 11; four groups of drill bits 17 are evenly arranged at the lower end of the sampling inner cylinder 15 through the connecting piece 18, and a linkage component is arranged in the sampling outer cylinder 11 to drive the four groups of connecting pieces 18 to rotate at the same time. When the linkage component drives the connecting piece 18 to rotate inward, the four groups of drill bits 17 fit together.

[0028] Furthermore, the power assembly includes a motor a5 and a threaded rod 6; the motor a5 is arranged at the upper end of the support frame 2; the threaded rod 6 is rotatably arranged in the support frame 2, and there is no thread arrangement at the connection between the threaded rod 6 and the support frame 2, one end of the threaded rod 6 is connected to the output shaft of the motor a5, and a threaded hole for the threaded rod 6 to pass through is opened on the movable plate 7, and protrusions are arranged on both sides of the movable plate 7, and the protrusions are embedded in the grooves on both sides of the slide groove a4.

[0029] Furthermore, the rotating component includes a motor b13 and a slider; the slider is slidably arranged at the lower end of the movable plate 7; the motor b13 is arranged at the lower end of the slider, the lower end of the output shaft of the motor b13 is connected to the sampling outer cylinder 11, and a fastening component for fastening the slider is arranged on the movable plate 7.

[0030] Furthermore, the linkage assembly includes a telescopic device 12, a telescopic rod 14 and a linkage ring 16; a rotating member 19 is arranged on the connecting member 18; the linkage ring 16 is arranged around the sampling outer cylinder 11 and the sampling inner cylinder 15, and contacts the outer walls of the sampling outer cylinder 11 and the sampling inner cylinder 15, and the lower end of the linkage ring 16 is rotatably connected to the rotating member 19 through a rotating block; the telescopic device 12 is arranged at the upper end of the sampling outer cylinder 11; the telescopic rod 14 passes through the sampling outer cylinder 11 and is connected to the output end of the telescopic device 12.

[0031] Furthermore, handles 3 are arranged on both sides near the upper end of the support frame 2, and grip grooves are arranged on the outer sides of the handles 3. A plurality of groups of insertion rods are arranged at the lower end of the base plate 1 for inserting the insertion rods into the underground stabilization equipment.

[0032] Working principle: When sampling soil at different depths, the telescopic device 12 is started to move the linkage ring 16 downward, so that the four groups of drill bits 17 move inward. At this time, when the sampling outer cylinder 11 drills downward, no soil will be stored in the sampling inner cylinder 15. After drilling to the specified depth, the motor a5 drives the moving plate 7 to lift up a distance greater than the length of the drill bit 17 to prevent the drill bit 17 from directly touching the soil and causing damage. At this time, the linkage ring 16 is driven by the telescopic device 12 to move upward, so that the four groups of drill bits 17 are opened. At this time, drilling is performed to collect the soil into the sampling inner cylinder 15.

[0033] In this embodiment, four groups of drill bits 17 are rotatably arranged at the lower end of the sampling inner cylinder 15 through a connecting piece 18, and are rotatably connected through a linkage ring 16. When the equipment needs to sample soil at different depths, the linkage ring 16 moves downward to drive the drill bit 17 to retract inward, and the four groups of drill bits 17 retract and the side walls are tightly attached together. At this time, the drill bit 17 will not store soil in the sampling inner cylinder 15 during the downward drilling process. After reaching the specified depth, the drill bit 17 is opened and rotated to collect soil. This ensures that soil at other depths will not be collected in advance before collecting soil at different depths, thereby ensuring the accuracy of sampling.

[0034] Embodiment 2

[0035] like Figure 1-Figure 6 As shown, a geological survey coring device proposed by the utility model, compared with the first embodiment, is provided with a fastening assembly for fastening the slider on the movable plate 7, and the fastening assembly includes a stud 9 and a fastener 10; a slide groove b8 is provided on the movable plate 7; the stud 9 is arranged at the upper end of the slider, and the stud 9 passes through the slide groove b8 and extends out of the slide groove b8 upward; the fastener 10 is threadedly connected to the stud 9, and the size of the fastener 10 is larger than the width of the slide groove b8.

[0036] Working principle: When the equipment is not needed, first tighten the fastener 10, and then move the motor b13 and the sampling outer cylinder 11 toward the support frame 2. After moving to the specified position, tighten the fastener 10 again so that the motor b13 and the sampling outer cylinder 11 are located above the base plate 1.

[0037] In this embodiment, the motor b13 is slidably arranged at the lower end of the movable plate 7 through a slider, so that when the equipment is not in use, the sampling outer cylinder 11 and the motor b13 are moved toward the support frame 2, so that the sampling outer cylinder 11 is retracted above the bottom plate 1 to avoid collision when not in use.

[0038] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A geological survey coring device, characterized in that: It comprises a base plate (1), a support frame (2), a movable plate (7), a sampling outer cylinder (11), a sampling inner cylinder (15) and a drill bit (17); The support frame (2) is arranged on the bottom plate (1), and a slide groove a (4) is provided on one side of the support frame (2); the movable plate (7) is slidably arranged in the slide groove a (4), and a power component for driving the movable plate to move is arranged on the support frame (2); the sampling outer cylinder (11) is located below the movable plate (7), and a rotating component for driving the sampling outer cylinder (11) to rotate is arranged at the lower end of the movable plate (7); The sampling inner cylinder (15) is arranged in the sampling outer cylinder (11); four groups of drill bits (17) are evenly arranged at the lower end of the sampling inner cylinder (15) through a connecting piece (18); a linkage assembly is arranged in the sampling outer cylinder (11) for driving the four groups of connecting pieces (18) to rotate simultaneously; when the linkage assembly drives the connecting pieces (18) to rotate inwardly, the four groups of drill bits (17) fit each other.

2. The geological survey coring device according to claim 1, characterized in that: The power assembly comprises a motor a (5) and a threaded rod (6); the motor a (5) is arranged at the upper end of the support frame (2); the threaded rod (6) is rotatably arranged in the support frame (2), the threaded rod (6) and the support frame (2) are connected without a thread, one end of the threaded rod (6) is connected to the output shaft of the motor a (5), a threaded hole for the threaded rod (6) to pass through is opened on the movable plate (7), and protrusions are arranged on both sides of the movable plate (7), and the protrusions are embedded in the grooves on both sides of the slide groove a (4).

3. The geological survey coring device according to claim 1, characterized in that: The rotating assembly comprises a motor b (13) and a slider; the slider is slidably arranged at the lower end of the moving plate (7); the motor b (13) is arranged at the lower end of the slider, the lower end of the output shaft of the motor b (13) is connected to the sampling outer cylinder (11), and a fastening assembly for fastening the slider is arranged on the moving plate (7).

4. The geological survey coring device according to claim 3, characterized in that: The fastening assembly comprises a stud (9) and a fastener (10); a slide groove b (8) is provided on the movable plate (7); the stud (9) is arranged at the upper end of the slider, and the stud (9) passes through the slide groove b (8) and extends out of the slide groove b (8) upward; the fastener (10) is threadedly connected to the stud (9), and the size of the fastener (10) is larger than the width of the slide groove b (8).

5. The geological survey coring device according to claim 1, characterized in that: The linkage assembly comprises a telescopic device (12), a telescopic rod (14) and a linkage ring (16); a rotating member (19) is arranged on the connecting member (18); the linkage ring (16) is arranged around and between the sampling outer cylinder (11) and the sampling inner cylinder (15), and is in contact with the outer walls of the sampling outer cylinder (11) and the sampling inner cylinder (15); the lower end of the linkage ring (16) is rotatably connected to the rotating member (19) through a rotating block; the telescopic device (12) is arranged at the upper end of the sampling outer cylinder (11); the telescopic rod (14) passes through the sampling outer cylinder (11) and is connected to the output end of the telescopic device (12).

6. The geological survey coring device according to claim 1, characterized in that: Handles (3) are arranged on both sides near the upper end of the support frame (2), and grip grooves are arranged on the outer sides of the handles (3). A plurality of groups of insertion rods are arranged at the lower end of the bottom plate (1) for inserting the insertion rods into the underground stabilization equipment.

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