Core sample sampler

Abstract

The invention belongs to the technical field of core sampling, and particularly relates to a core sample sampler which comprises a base, a guide rod, a top plate, a hydraulic cylinder, a sampling mechanism and a driving mechanism, the guide rod is arranged on the base, locking grooves are evenly formed in the inner side of the guide rod, and the top plate is arranged at the top end of the guide rod; the hydraulic cylinder is vertically fixed in the middle of the top plate, the sampling mechanism is arranged in the guide rod in a sliding and sleeved mode, a sliding locking mechanism is arranged above the sampling mechanism and can achieve clamping connection between the sampling mechanism and the guide rod or clamping connection between the sampling mechanism and the hydraulic cylinder, and the driving mechanism is arranged on the sampling mechanism. According to the invention, the core sample can be conveniently taken out after being sampled, and sample breakage caused by excessive knocking force is avoided.

Description

Technical Field

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

[0002] Core samples are indispensable in the field of geological research, especially in the fields of petroleum geology, sequence stratigraphy, and sedimentology. For example, the identification of sedimentary phase types, the study of provenance systems, the observation and description of mineral microscopic characteristics, and U-Pb dating studies are all carried out based on core samples.

[0003] Chinese utility model patent CN220289056U discloses a core sampler, which facilitates the adjustment of the position of the drill bit by setting a motor and a threaded rod. However, the existing core sampler does not have the function of taking out the sample. When the core sample is taken out from the drill barrel, the drill barrel needs to be removed first, and then manually pulled and knocked. The coring process is time-consuming and laborious, and excessive knocking force can easily cause the core sample to break, which is not conducive to the complete removal of the core sample.

[0004] Therefore, how to provide a sampler that can both sample core samples and facilitate the removal of core samples has become a problem that needs to be solved by those skilled in the art. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention discloses a core sampler, and specifically discloses the following technical solutions:

[0006] A core sampler comprises a base, a guide rod, a top plate, a hydraulic cylinder, a sampling mechanism and a driving mechanism, wherein the guide rod is arranged on the base, locking grooves are evenly arranged on the inner side of the guide rod, the top plate is arranged at the top end of the guide rod, the hydraulic cylinder is vertically fixed to the middle part of the top plate, the sampling mechanism is slidably sleeved in the guide rod, a sliding locking mechanism is arranged above the sampling mechanism, which can realize the clamping connection between the sampling mechanism and the guide rod, or the clamping connection between the sampling mechanism and the hydraulic cylinder, and the driving mechanism is arranged on the sampling mechanism.

[0007] Furthermore, the sliding locking mechanism includes a first clamping plate, a second clamping plate, a first locking block and a second locking block. The first clamping plate and the second clamping plate are both slidably limited on the surface of the sampling mechanism and are symmetrical about the center of the sampling mechanism. A U-shaped clamp is provided above the front end of the first clamping plate, and a U-shaped clamp is provided below the front end of the second clamping plate. The piston of the hydraulic cylinder is correspondingly provided with a clamping groove, and the two U-shaped clamps can be closed to form a ring-shaped clamping groove. The bottom of the first clamping plate and the second clamping plate are both provided with a sliding groove, and the first locking block and the second locking block are both slidably provided in the sliding groove for clamping the locking groove.

[0008] Furthermore, a locking hole is provided on the front end surface of the U-shaped clamp of the second clamping plate, and a locking column is provided on the front end of the first locking block. The locking column can extend into the locking hole to lock the first clamping plate and the second clamping plate.

[0009] Furthermore, the sampling mechanism includes a mounting bracket, a linear bearing, a thrust bearing, a drill barrel and a coring drill bit, the linear bearings are arranged on the left and right sides of the mounting bracket, the mounting bracket is slidably arranged on the guide rod through the linear bearings, the first clamping plate and the second clamping plate are slidably arranged on the upper surface of the mounting bracket, the thrust bearings are arranged on the upper and lower ends of the mounting bracket, the drill barrel is rotationally restricted on the mounting bracket by the thrust bearing, the surface of the drill barrel is provided with an annular rack, and the coring drill bit is installed at the bottom of the drill barrel.

[0010] Furthermore, a through hole is provided at the center of the top end of the drill barrel, a push block and a first spring are slidably provided at the inner top end of the drill barrel, and the push block is connected to the top end of the drill barrel through the first spring.

[0011] Furthermore, the driving mechanism includes a driving motor and a reduction gearbox, both of which are arranged in a mounting bracket, the reduction gearbox is arranged at the output end of the driving motor, and an output gear is arranged at the end of the reduction gearbox, and the output gear is meshed with an annular rack.

[0012] Furthermore, it also includes a water inlet, which is arranged on the drilling barrel.

[0013] Furthermore, the base is a diamond-shaped structure, and a guide hole is provided at the center of the base.

[0014] Furthermore, the base is a rectangular frame structure, the guide rod is rotatably connected to the base, and an angle limiter is provided at the hinge of the base.

[0015] The beneficial effects of the present invention are as follows: by arranging a sliding locking mechanism on the sampling mechanism, the present invention can not only connect the sampling mechanism with the hydraulic cylinder, and use the hydraulic cylinder to push the sampling mechanism to sample the core sample, but also can connect the sampling mechanism with the guide rod by adjusting the sliding locking mechanism, and make the piston rod of the hydraulic cylinder directly push the pushing block in the drill barrel to push the core sample out of the drill barrel, thereby saving manual operation and avoiding the breakage of the core sample due to knocking. At the same time, since the sample can be taken out quickly, continuous sampling can be carried out, thereby improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0017] Figure 2It is a cross-sectional view of the sliding locking structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the first clamping plate of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the second clamping plate of the present invention;

[0020] Figure 5 It is a schematic diagram of the clamping state of the first clamping plate and the second clamping plate of the present invention;

[0021] Figure 6 This is a schematic diagram of the first locking block of the present invention in an extended state;

[0022] Figure 7 This is a schematic diagram of the internal structure of the drilling barrel of the present invention;

[0023] Figure 8 It is a cross-sectional view of the first clamping plate of the present invention;

[0024] Fig. 9 for Figure 8 A partial enlarged view of the middle part;

[0025] Fig.10 This is a schematic diagram of the base structure in Example 2 of the present invention.

[0026] Among them, 1-base; 2-guide rod; 3-top plate; 4-hydraulic cylinder; 5-first clamping plate; 6-second clamping plate; 7-first locking block; 8-second locking block; 9-mounting bracket; 10-U-type chuck; 11-clamping groove; 12-locking column; 13-linear bearing; 14-bidirectional thrust bearing; 15-drill barrel; 16-coring drill bit; 17-annular rack; 18-water inlet; 19-driving motor; 20-reduction gear box; 21-pushing block; 22-first spring; 23-angle limiter; 24-second spring; 25-ball. DETAILED DESCRIPTION

[0027] 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.

[0028] Example 1

[0029] Refer to the attached Figure 1-9The present embodiment discloses a core sample sampler, comprising a base 1, a guide rod 2, a top plate 3, a hydraulic cylinder 4, a sampling mechanism and a driving mechanism. The base 1 in the present embodiment is a diamond structure, a guide hole is provided at the center of the base 1, the guide rod 2 is vertically fixed on the base 1, locking grooves are evenly provided on the inner side of the guide rod 2, the top plate 3 is provided at the top end of the guide rod 2, the hydraulic cylinder 4 is vertically fixed at the middle part of the top plate 3, the sampling mechanism is slidably sleeved in the guide rod 2, a sliding locking mechanism is provided above the sampling mechanism, and the driving mechanism is provided on the sampling mechanism.

[0030] The sliding locking mechanism in this embodiment includes a first clamping plate 5, a second clamping plate 6, a first locking block 7 and a second locking block 8. The sampling mechanism is provided with a mounting bracket 9. The first clamping plate 5 and the second clamping plate 6 are both slidably limited on the surface of the mounting bracket 9. The two clamping plates are symmetrical about the center of the mounting bracket 9. A U-shaped clamp 10 is provided above the front end of the first clamping plate 5, and a U-shaped clamp 10 is provided below the front end of the second clamping plate 6. The piston rod of the hydraulic cylinder 4 is correspondingly provided with a clamping groove 11. The two U-shaped clamps 10 can be closed to form an annular clamping groove 11. The bottoms of the first clamping plate 5 and the second clamping plate 6 are both provided with a sliding groove. The first locking block 7 and the second locking block 8 are both slidably provided in the sliding groove for clamping the locking groove. The front end surface of the U-shaped clamp 10 of the second clamping plate 6 is provided with a locking hole, and the front end of the first locking block 7 is provided with a locking column 12. The locking column 12 can extend into the locking hole to tightly lock the first clamping plate 5 and the second clamping plate 6 together.

[0031] The sampling mechanism in this embodiment also includes a linear bearing 13, a bidirectional thrust bearing 14, a drill barrel 15 and a coring drill bit 16. The linear bearing 13 is arranged on the left and right sides of the mounting bracket 9. The mounting bracket 9 is slidably arranged on the guide rod 2 through the linear bearing 13. The bidirectional thrust bearing 14 is arranged at the upper and lower ends of the mounting bracket 9. The drill barrel 15 is rotationally restricted on the mounting bracket 9 by two bidirectional thrust bearings 14. An annular rack 17 is arranged on the surface of the drill barrel 15, and the coring drill bit 16 is installed at the bottom of the drill barrel 15.

[0032] The driving mechanism includes a driving motor 19 and a reduction gear box 20, both of which are arranged in the mounting bracket 9. The reduction gear box 20 is arranged at the output end of the driving motor 19, and an output gear is arranged at the end of the reduction gear box 20, and the output gear is meshed with the annular rack 17.

[0033] As a preferred embodiment of the present invention, a water inlet 18 is also provided on the drill barrel 15 , and a water inlet pipe can be connected when the sample is taken out of the drill barrel 15 , so that the drill barrel 15 can be cooled and lubricated by water flow.

[0034] As a preferred embodiment of the present invention, a through hole is provided at the center of the top of the drill barrel 15 , a push block 21 and a spring 22 are slidably provided at the inner top of the drill barrel 15 , and the push block 21 is connected to the top of the drill barrel 15 through the spring 22 .

[0035] Before sampling, the core sampler in this embodiment has the first clamping plate 5 and the second clamping plate 6 in a closed state, and the U-shaped clamp 10 is annularly clamped around the clamping groove 11 of the piston rod, so that the sampling mechanism can be raised and lowered along with the piston rod of the hydraulic cylinder 4. Then, the drive motor 19 is turned on to rotate the drill barrel 15, and the hydraulic cylinder 4 is pressed down to drive the drill barrel 15 to take samples. When the sampling is completed, the hydraulic cylinder 4 drives the sampling mechanism to return to the surface, the drive motor 19 is turned off, and the first locking block 7 and the second locking block 8 are moved to insert the guide The sampling mechanism is locked on the guide rod 2 in the locking groove of the rod 2, and then the first clamping plate 5 and the second clamping plate 6 are separated to both sides, and the hydraulic cylinder 4 is opened again. The piston rod of the hydraulic cylinder 4 passes through the through hole at the top of the drill barrel 15, pushing the push block 21 to move downward to push out the core sample. After the sample is pushed out, the piston rod of the hydraulic cylinder 4 can return to the initial position, and the first clamping plate 5 and the second clamping plate 6 are closed again, and the first locking block 7 and the second locking block 8 are retracted from the locking groove to start the second round of sampling.

[0036] Example 2

[0037] like Fig.10 As shown, the difference between this embodiment and embodiment 1 is that, in this embodiment, the side walls of the two ends of the slide groove of the first clamping plate 5 and the second clamping plate 6 (i.e., the sliding limit positions of the locking blocks) are provided with positioning holes, and the first locking block 7 and the second locking block 8 are provided with ball locking mechanisms corresponding to the positioning holes, and the ball locking mechanisms include a second spring 24 and a ball 25. Specifically, the first locking block 7 and the second locking block 8 are both provided with mounting holes, and the second spring 24 and the ball 25 are movably confined inside the mounting holes, one end of the second spring 24 abuts against the bottom of the mounting hole, and the other end of the second spring 24 abuts against the ball 25.

[0038] The first locking block 7 and the second locking block 8 can be stuck in the positioning hole through the ball 25 to achieve positioning after sliding to the end. When the thrust is increased, the ball 25 contracts, causing the clamping plate and the locking block to slide relative to each other again.

[0039] The base 1 in this embodiment is a rectangular frame structure, the guide rod 2 is rotatably connected to the base 1, and an angle limiter 23 is provided at the hinge of the base 1. The angle limiter 23 in this embodiment is a half-moon limiter, and the angle between the guide rod 2 and the base 1 can be adjusted by inserting bolts.

[0040] The advantage of the guide rod 2 being hinged to the base 1 through the angle limiter 23 is that when the drill barrel 15 is too long, the core sample can be pushed out by laying the drill barrel 15 flat. At the same time, the angle adjustment can also enable the sampler to drill the core sample at any angle, and after use, the mechanism above the base 1 can be placed horizontally to facilitate the storage of the core sampler.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A core sampler, characterized in that: It includes a base, a guide rod, a top plate, a hydraulic cylinder, a sampling mechanism and a driving mechanism. The guide rod is arranged on the base. The inner side of the guide rod is evenly provided with locking grooves. The top plate is arranged at the top end of the guide rod. The hydraulic cylinder is vertically fixed to the middle part of the top plate. The sampling mechanism is slidably sleeved in the guide rod. A sliding locking mechanism is arranged above the sampling mechanism to realize the clamping connection between the sampling mechanism and the guide rod, or the clamping connection between the sampling mechanism and the hydraulic cylinder. The driving mechanism is arranged on the sampling mechanism.

2. A core sampler according to claim 1, characterized in that: The sliding locking mechanism includes a first clamping plate, a second clamping plate, a first locking block and a second locking block. The first clamping plate and the second clamping plate are both slidably limited on the surface of the sampling mechanism and are symmetrical about the center of the sampling mechanism. A U-shaped clamp is provided above the front end of the first clamping plate, and a U-shaped clamp is provided below the front end of the second clamping plate. The piston of the hydraulic cylinder is correspondingly provided with a clamping groove, and the two U-shaped clamps can be closed to form a ring-shaped clamping groove. The bottoms of the first clamping plate and the second clamping plate are both provided with sliding grooves, and the first locking block and the second locking block are both slidably provided in the sliding grooves for clamping the locking grooves.

3. A core sampler according to claim 2, characterized in that: A locking hole is arranged on the front end surface of the U-shaped clamp of the second clamping plate, and a locking column is arranged on the front end of the first locking block. The locking column can extend into the locking hole to lock the first clamping plate and the second clamping plate.

4. A core sampler according to claim 2, characterized in that: The sampling mechanism includes a mounting bracket, a linear bearing, a thrust bearing, a drill barrel and a coring drill bit. The linear bearing is arranged on the left and right sides of the mounting bracket. The mounting bracket is slidably arranged on the guide rod through the linear bearing. The first clamping plate and the second clamping plate are slidably arranged on the upper surface of the mounting bracket. The thrust bearing is arranged at the upper and lower ends of the mounting bracket. The drill barrel is rotationally restricted on the mounting bracket by the thrust bearing. An annular rack is arranged on the surface of the drill barrel, and the coring drill bit is installed at the bottom of the drill barrel.

5. A core sampler according to claim 4, characterized in that: A through hole is arranged at the center of the top end of the drilling barrel, a pushing block and a first spring are slidably arranged at the inner top end of the drilling barrel, and the pushing block is connected to the top end of the drilling barrel through the first spring.

6. A core sampler according to claim 4, characterized in that: The driving mechanism includes a driving motor and a reduction gear box, both of which are arranged in a mounting bracket. The reduction gear box is arranged at the output end of the driving motor. An output gear is arranged at the end of the reduction gear box, and the output gear is meshed with an annular rack.

7. A core sampler according to claim 4, characterized in that: It also includes a water inlet, which is arranged on the drilling barrel.

8. A core sampler according to claim 1, characterized in that: The base is a diamond-shaped structure, and a guide hole is arranged at the center of the base.

9. A core sampler according to claim 1, characterized in that: The base is a rectangular frame structure, the guide rod is rotatably connected to the base, and an angle limiter is arranged at the hinge of the base.

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