A sampler suitable for sampling core samples
By designing a sampler that uses oblique cutting and longitudinal cutting, the problem of drilling sampling destroying the core structure is solved, and fast, accurate and flexible core sample collection is achieved. It is suitable for field electricity-free operation, ensuring the sample Completeness and research accuracy.
Patent Information
- Application Number
- CN202011357241.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-11-27
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2040-11-27
AI Technical Summary
The existing drilling core sample sampling method will destroy the internal section structure of the core, resulting in the disappearance of geological phenomena such as insect holes, biological disturbances, stratification, and structure, affecting the accuracy of subsequent research and scientific research results.
A sampler is designed, using two first saw blades parallel vertical arrangement and two second saw blades V-shaped inclined arrangement. Samples are taken through oblique cutting and longitudinal cutting, and core fixing belts and buckle belts are used. Fix the core, connect the fixed saw blade with a spring, and manually operate it for easy use in the field, and control the sample size through a scale.
It realizes rapid sampling without destroying the core internal structure, improves collection flexibility, reduces time cost, and is suitable for operation in electricity-free areas, with accurate quantitative samples and durable wear.
Smart Images
Figure CN112414749B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of geological research, and in particular to a sampler suitable for sampling core samples. 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] In the process of sampling core samples, the most common sampling method is drilling sampling, which mainly involves drilling through the core laterally and extracting rock samples from the borehole. The biggest disadvantage of drilling sampling is that the internal cross-sectional structure of the core original rock is destroyed after sampling, causing the wormholes, bioturbation, bedding, and structure on the cross-sectional surface of the core to be destroyed. Especially after multiple samplings, some geological phenomena visible in the core may disappear completely due to severe damage to the cross-sectional surface of the core. This will inevitably cause subsequent researchers to have deviations or errors in the results of core observation, indirectly affecting the accuracy of scientific research results, causing large errors in the results, or directly hindering the progress of scientific research. Summary of the invention
[0004] In view of this, the present invention provides a sampler suitable for core sample sampling which is easy to operate and has complete functions.
[0005] The present invention provides a sampler suitable for sampling core samples, comprising a protective shell, a first operating rod and two second operating rods of a core fixing part, wherein a first opening is provided at the upper end of the protective shell, the first operating rod extends into the protective shell through the first opening and is connected to the protective shell, a second opening is provided at the left end and the right end of the protective shell respectively, the second operating rod and the second opening correspond one to one, the second operating rod extends into the protective shell through the second opening and is connected to the protective shell, two first saw blades are arranged at the lower end of the first operating rod, the first saw blade cuts the core as is vertically, a second saw blade is arranged on the second operating rod, the second saw blade is arranged obliquely, and the second saw blade cuts the core as is obliquely, the core fixing part comprises a core fixing belt and a buckle belt, the core fixing belt is fixedly connected to the front end of the protective shell, the buckle belt is fixedly connected to the rear end of the protective shell, and the core fixing belt is matched with the buckle belt to fix the core as is.
[0006] Further, the first operating rod includes a handle, an adjusting handle, two saw blade operating rods, a connecting screw, a connecting handle and two fixing clips, the connecting handle is vertically connected between the handle and the adjusting handle, the lower end of the handle is fixedly connected to the upper end of the connecting handle, the connecting handle is threadedly matched with the connecting screw, the fixing clip is arranged in the adjusting handle, the saw blade operating rod is clamped between the two fixing clips, the first saw blade is fixedly connected to the bottom of the saw blade operating rod, the connecting screw includes a separate connecting screw left part and a connecting screw right part, the lower end of the left part of the connecting screw is fixedly connected to the upper end of one of the fixing clips, and the lower end of the right part of the connecting screw is fixedly connected to the upper end of the other fixing clip, and the two fixing clips are separated after the left part of the connecting screw and the right part of the connecting screw are separated, and the saw blade operating rod is fixed after the left part of the connecting screw and the right part of the connecting screw are contacted and tightened.
[0007] Furthermore, the first operating rod also includes a nut sleeve, which is fixedly arranged inside the connecting handle, and the connecting screw is threadably matched with the nut sleeve.
[0008] Furthermore, the second operating rod includes a hand-held portion and a non-hand-held portion, the hand-held portion has a diameter greater than a diameter of the non-hand-held portion, the hand-held portion is fixedly connected to the non-hand-held portion, and the second saw blade is connected to the end of the non-hand-held portion.
[0009] Furthermore, the sampler also includes a support frame, which includes two first support rods and two second support rods, the two first support rods are respectively fixedly connected between the left end and the right end of the protective shell, one end of the first support rod is vertically connected to the left end of the protective shell, and the other end of the first support rod is vertically connected to the right end of the protective shell, the two second support rods are respectively fixedly connected between the front end and the rear end of the protective shell, one end of the second support rod is vertically connected to the front end of the protective shell, and the other end of the second support rod is vertically connected to the rear end of the protective shell, the first support rod is connected to the corresponding saw blade operating rod through a first spring, and the second support rod is connected to the corresponding non-hand-held part through a second spring.
[0010] Furthermore, the sampler also includes a plurality of size fixers, which include a first fixing screw, a second fixing screw and a fixing strip. A first groove is provided above the second opening, and a second groove is provided below the second opening. A first fixing screw hole and a second fixing screw hole are respectively provided on the fixing strip. The first fixing screw passes through the first fixing screw hole and is inserted into the second groove. The second fixing screw passes through the second fixing screw hole and is inserted into the first groove. Every two size fixers form a group, and a group of size fixers is provided at each second opening.
[0011] Furthermore, a first scale is disposed at the first opening, and a second scale is disposed at the second opening.
[0012] Furthermore, a plurality of small holes are evenly arranged on the core fixing belt, the end of the buckle belt is bent downward to form a U-shaped groove, a connecting buckle is arranged at the notch of the U-shaped groove to close it, a buckle is passed through the U-shaped groove, a buckle rod is movably connected to the buckle, and the end of the buckle rod is inserted into the small hole to buckle and connect the core fixing belt with the buckle belt.
[0013] Furthermore, a third opening in a semicircular shape is respectively provided at the front end and the rear end of the protective shell; a fourth opening is provided at the lower end of the protective shell, and the fourth opening is connected with the two third openings to form a semi-cylindrical cavity.
[0014] The beneficial effects brought by the technical solution provided by the present invention are:
[0015] 1. The sampler provided by the present invention uses two first saw blades arranged in parallel and vertically, and two second saw blades arranged in a V-shape at an angle of 60 degrees, and adopts the method of oblique cutting and longitudinal cutting to take samples, which can not only realize rapid sampling, but also avoid the destruction of the internal section structure of the original core sample and the wormholes, biological disturbance, bedding, structure and other phenomena on the core section;
[0016] 2. The sampler provided by the present invention uses two core fixing belts to firmly lock the core in its original state, making the sampling operation convenient;
[0017] 3. The sampler provided by the present invention makes full use of the connection function and elastic function of the two first springs and the two second springs, so as to achieve the purpose of fixing the first saw blade and the second saw blade by connecting the first operating rod and the second operating rod, and enable the first saw blade and the second saw blade to slide on the core surface, thereby cutting the core sample, and the structure is ingenious;
[0018] 4. The sampler provided by the present invention can control the spacing between the size holder and the saw blade operating rod by referring to the first scale and the second scale, thereby quantifying the size of the sample to be collected, which greatly improves the collection flexibility and reduces the time cost;
[0019] 5. The sampler provided by the present invention is operated manually, which is more suitable for operation in the field or in areas without electricity such as core storages compared to electric operation;
[0020] 6. Most of the components of the sampler provided by the present invention are made of stainless steel, which is wear-resistant, durable, scientific and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The present invention is a schematic structural diagram of a sampler suitable for sampling core samples.
[0022] Figure 2It is an inverted schematic diagram of a sampler suitable for sampling core samples of the present invention.
[0023] Figure 3 The present invention is a schematic diagram of the internal structure of a sampler suitable for sampling core samples.
[0024] Figure 4 The present invention is a schematic structural diagram of a core fixing member of a sampler suitable for sampling core samples.
[0025] Figure 5 It is a structural schematic diagram of a first operating rod of a sampler suitable for sampling core samples of the present invention.
[0026] Figure 6 The present invention is a schematic diagram of the internal structure of a first operating rod of a sampler suitable for sampling core samples.
[0027] Figure 7 The present invention is a schematic structural diagram of an adjustment handle of a first operating rod of a sampler suitable for sampling core samples.
[0028] Figure 8 It is a structural schematic diagram of a second operating rod of a sampler suitable for sampling core samples of the present invention.
[0029] Fig. 9 It is a schematic diagram of taking out a core sample using the sampler provided by the present invention. DETAILED DESCRIPTION
[0030] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.
[0031] Please refer to Figure 1-Figure 8 An embodiment of the present invention provides a sampler suitable for sampling core samples, including a protective shell 10, a support frame 20, a core fixing member 30, four size fixings 40, a first operating rod 50 and two second operating rods 60.
[0032] refer to Figure 1 and Figure 2The protective shell 10 is a square structure with a hollow interior. A first opening 100 is provided at the upper end of the protective shell 10. A first scale 70 is provided at the first opening 100. The first operating rod 50 extends into the protective shell 10 through the first opening 100. A second opening 101 is provided at the left and right ends of the protective shell 10. The two second openings 101 are symmetrically arranged. The second operating rod 60 corresponds to the second opening 101 one by one. The second operating rod 60 extends into the protective shell 10 through the second opening 101. A semicircular shape is provided at the front and rear ends of the protective shell 10. The third opening 102; a fourth opening 103 is provided at the lower end of the protective shell 10, and the fourth opening 103 is connected with the two third openings 102 to form a semi-cylindrical cavity; in this embodiment, the protective shell 10 is a stainless steel metal box with a size of 25cm*15cm*15cm, the size of the first opening 100 is 15cm*5cm, the second opening 101 is a rounded rectangular shape with a size of 15cm*2cm, the diameter of the third opening 102 is 14.4cm, and the size of the fourth opening 103 is 14.4cm*25cm.
[0033] A second scale 80 is provided at each second opening 101, a first groove 1011 is provided above each second opening 101, a second groove 1012 is provided below each second opening 101, the second scale 80 is located between the second opening 101 and the first groove 1011, the size of the first groove 1011 and the second groove 1012 is 15cm*5cm, the depression depth of the first groove 1011 and the second groove 1012 is 0.2cm, and the distance between the first groove 1011 and the second groove 1012 is 5cm.
[0034] refer to Figure 3 The support frame 20 includes two first support rods 200 and two second support rods 201. The two first support rods 200 are respectively fixedly connected between the left end and the right end of the protective shell 10, one end of the first support rod 200 is vertically connected to the left end of the protective shell 10, and the other end of the first support rod 200 is vertically connected to the right end of the protective shell 10, and the two second support rods 201 are respectively fixedly connected between the front end and the rear end of the protective shell 10, one end of the second support rod 201 is vertically connected to the front end of the protective shell 10, and the other end of the second support rod 201 is vertically connected to the rear end of the protective shell 10; in this embodiment, the first support rod 200 is a stainless steel metal rod with a diameter of 0.5 cm and a length of 15 cm; the second support rod 201 is a stainless steel metal rod with a diameter of 0.5 cm and a length of 25 cm; the vertical distance between the first support rod 200 and the second support rod 201 from the first opening 100 is 2.5 cm.
[0035] refer to Figure 4The core fixing member 30 includes two core fixing belts 300 and two buckle belts 301. The two core fixing belts 300 are fixedly connected to the front end of the protective shell 10 by adhesive strips, and the two buckle belts 301 are fixedly connected to the rear end of the protective shell 10 by adhesive strips, and the core fixing belts 300 and the buckle belts 301 are both arranged close to the fourth opening 103. A plurality of small holes 3001 are evenly arranged on the core fixing belt 300. The end of the buckle belt 301 is bent downward to form a U-shaped groove 302. A connecting buckle 303 is arranged at the notch of the U-shaped groove 302 to close it. A through hole 3021 is arranged at the bottom end of the U-shaped groove 302. A buckle ring 304 is inserted in the U-shaped groove 302. A buckle ring rod 305 is movably connected to the buckle ring 304. The end of the buckle ring rod 305 passes through the through hole 3021 and is placed above the buckle ring 304. , insert the end of the core fixing belt 300 into the buckle 304, and insert the buckle rod 305 into the corresponding small hole 3001, the core can be fixed as it is; in this embodiment, the core fixing belt 300, the buckle belt 301, and the connecting buckle 303 are all made of artificial soft leather, the vertical distance between the two core fixing belts 300 is 17 cm, the length of the core fixing belt 300 is 20 cm, the width is 2 cm, and the thickness is 0.3 cm. The small hole 3001 is a circular hole with a diameter of 0.2 cm, the buckle 304 and the buckle rod 305 are both made of stainless steel material, the buckle 304 is a 4cm*3cm rectangular frame, and the rectangular frame is surrounded by a cylindrical steel bar with a diameter of 0.2 cm, and the buckle rod 305 is cylindrical in shape, and the buckle rod 305 has a diameter of 0.2 cm and a length of 5 cm.
[0036] refer to Figure 2 The size fixer 40 includes a first fixing screw 400, a second fixing screw 401 and a fixing bar 402. The fixing bar 402 is provided with a first fixing screw hole 4021 and a second fixing screw hole 4022 respectively. The first fixing screw 400 passes through the first fixing screw hole 4021 and is inserted into the second groove 1012. The second fixing screw 401 passes through the second fixing screw hole 4022 and is inserted into the first groove 1011. Two size fixers 40 form a group. A group of size fixers 40 is provided at each second opening 101. The position of the size fixer 40 can be adjusted by loosening the first fixing screw 400 and the second fixing screw 401, thereby adjusting the distance between the two size fixers 40 on the same side.
[0037] refer to Figure 5 , Figure 6 and Figure 7The first operating rod 50 includes a handle 500, an adjusting handle 501, two saw blade operating rods 502, a connecting screw 503, two fixing clips 504, a nut sleeve 505 and a connecting handle 506. The handle 500 is located above the adjusting handle 501. The connecting handle 506 is vertically connected between the handle 500 and the adjusting handle 501. The lower end of the handle 500 is fixedly connected to the upper end of the connecting handle 506. The nut sleeve 505 is fixedly arranged inside the connecting handle 506. The connecting screw 503 is threadedly matched with the nut sleeve 505. A fifth opening 5011 is arranged on the lower side of the adjusting handle 501. Two fixing clips 504 are respectively arranged on both sides of the fifth opening 5011, and anti-slip patterns are arranged on the inner side of the fixing clip 504. The connecting screw 503 includes evenly separated connecting clips 504 and a fixing clip 504. The left connecting screw 5031 and the right connecting screw 5032 are connected, the lower end of the left connecting screw 5031 is fixedly connected to the upper end of one of the fixing clips 504, the lower end of the right connecting screw 5032 is fixedly connected to the upper end of the other fixing clip 504, and the connection between the connecting screw 503 and the fixing clip 504 is located in the middle position of the fixing clip 504, the two saw blade operating rods 502 are clamped between the two fixing clips 504, and the two saw blade operating rods 502 are located on both sides of the connecting screw 503, the two saw blade operating rods 502 are arranged in parallel, and a first saw blade 507 is fixedly connected to the bottom of each saw blade operating rod 502, and the first saw blade 507 can cut the core vertically, and the side end of each saw blade operating rod 502 is connected by a first spring 5 08 is connected to the first support rod 200 close to it, and the handle 500 rotates counterclockwise to drive the connecting handle 506 to rotate. After the connecting handle 503 rotates, the connecting screw 503 is separated from the nut sleeve 505, and a certain distance is generated between the left part 5031 of the connecting screw and the right part 5032 of the connecting screw. Then, a certain distance is generated between the two fixing clips 504, and the clamping position of the saw blade operating rod 502 between the two fixing clips 504 can be adjusted; the handle 500 rotates clockwise to drive the connecting screw 503 and the nut sleeve 505 to tighten and match, and the left part 5031 of the connecting screw and the right part 5032 of the connecting screw are tightened and contacted, thereby fixing the saw blade operating rod 502 between the two fixing clips 504; in this embodiment, the handle 500 is 2.5 in diameter The adjusting handle 501 is a stainless steel cylindrical hollow tube with a diameter of 2.5 cm, a length of 15 cm, and a wall thickness of 0.3 cm. The fifth opening 5011 is a rectangular opening with a size of 14 cm*1.5 cm. The fixing clip 504 is a steel sheet with a length of 14 cm, a width of 1.5 cm, a thickness of 0.3 cm, and a relatively high hardness. The inner spacing between the two fixing clips 504 is 1 cm. The connecting screw 503 is composed of a screw with a diameter of 1 cm and a length of 4.5 cm divided into two halves. The connecting handle 506 is a stainless steel cylindrical hollow tube with a diameter of 2.5 cm, a length of 5 cm, and a wall thickness of 0.3 cm. The nut sleeve 505 is made of stainless steel material, and the nut sleeve 505 has a lower opening diameter of 1.9cm, 1.4cm upper opening diameter, 0.2cm wall thickness truncated cone-shaped internal spiral structure, the whole gradually becomes thinner from bottom to top, the saw blade operating rod 502 is made of high-carbon stainless steel material with relatively high hardness, and its shape is a rectangular parallelepiped, with a size of 10cm*1cm*0.5cm. .
[0038] refer to Figure 8 The second operating rod 60 includes a hand-held portion 600 and a non-hand-held portion 601. The diameter of the hand-held portion 600 is larger than the diameter of the non-hand-held portion 601. The hand-held portion 600 is fixedly connected to the non-hand-held portion 601. Each non-hand-held portion 601 is connected to the second support rod 201 close to it through a second spring 602. The end of the non-hand-held portion 601 is connected to the second saw blade 603, and the second saw blade 603 is tilted. The two second saw blades 603 arranged on the two second operating rods 60 are naturally 2 cm apart, and the inclination line is V-shaped with an angle of 60 degrees, which can cut the core obliquely. In this embodiment, the hand-held portion 600 is a stainless steel cylindrical hollow tube with a diameter of 2.5 cm, a length of 10 cm, and a wall thickness of 0.3 cm, and the non-hand-held portion 601 is a stainless steel cylindrical hollow tube with a diameter of 1.5 cm, a length of 10 cm, and a wall thickness of 0.3 cm.
[0039] In this embodiment, the first saw blade 507 and the second saw blade 603 are both made of high-carbon stainless steel material with relatively high hardness, and are single-sided tooth saws with a length of 4 cm, a width of 2 cm, and a thickness of 0.2 cm; the natural length of the first spring 508 is 15 cm, and the natural length of the second spring 602 is 10 cm. The maximum stretching amount of the first spring 508 and the second spring 602 are respectively 1 times of their respective natural lengths, and the maximum tension is 20 N; the total length of the first scale 70 and the second scale 80 are both 15 cm.
[0040] The process of collecting core samples using the sampler provided in this embodiment is as follows:
[0041] (1) placing the core as is at the fourth opening 103 of the protective shell 10;
[0042] (2) Each core fixing belt 300 is inserted into the buckle 304 at the diagonal position thereof, and the buckle rod 305 is inserted into the small hole 3001. At this time, the two core fixing belts 300 are cross-locked to fix the core as it is;
[0043] (3) Adjusting the size holder 40: According to the sampling size requirement, refer to the scale on the second scale 80, rotate the first fixing screw 400 and the second fixing screw 401 respectively, so that the first fixing screw 400 and the second fixing screw 401 fall off from the second groove 1012 and the first groove 1011 respectively, and then place the first fixing screw 400 and the second fixing screw 401 at appropriate positions in the second groove 1012 and the first groove 1011 respectively, and tighten the first fixing screw 400 and the second fixing screw 401. At this time, the two fixing bars 402 are fixed at appropriate positions respectively, and the distance between the two fixing bars 402 on the same side is the sliding range of the second operating rod 60, that is, the sliding range of the second operating rod 60 is fixed, so as to quantify the length of the sample to be collected;
[0044] (3) The handle 500 is rotated counterclockwise to drive the connecting handle 506 to rotate, so that the connecting screw 503 is disengaged from or loosened from the nut sleeve 505 in the connecting handle 506, and the fixing clip 504 is loosened; then the position between the two saw blade operating rods 502 is adjusted, thereby changing the distance between the two first saw blades 507, so that the distance between the two first saw blades 507 is equal to the distance between the two size fixers 40 on the same side; after the adjustment is completed, the handle 500 is rotated clockwise in the opposite direction, so that the connecting screw 503 is screwed into the nut sleeve 505 in the connecting handle 506 again, and at this time, the two fixing clips 504 clamp the saw blade operating rod 502;
[0045] (4) Push the two second operating rods 60 forward and backward with force, so that the two second saw blades 603 slide to cut the core obliquely, until the cuts of the two second saw blades 603 intersect to form a line, and then stop the oblique cutting;
[0046] (5) Push the first operating lever 50 left and right with force to make the first saw blade 507 slide vertically to cut the core until the two cutting seams intersect with the cutting seams in step (4), and then stop cutting;
[0047] (6) Use tweezers or other clamping tools to remove the cut core sample. The shape of the removed core sample is shown in Fig. 9 , Fig. 9 In the figure, 90 indicates the core sample;
[0048] (7) Separate the core fixing band 300 and the buckle 304 and remove the core intact.
[0049] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.
[0050] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.
[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A sampler suitable for sampling core samples, characterized in that: It includes a protective shell, a core fixing part, a first operating rod and two second operating rods, the first operating rod and the second operating rod are both extended into the protective shell and connected to the protective shell, two first saw blades are arranged at the lower end of the first operating rod, the first saw blades cut the core vertically, the second operating rod is provided with a second saw blade, the second saw blade is arranged obliquely, and the second saw blade obliquely cuts the core, the core fixing part includes a core fixing belt and a buckle belt, the core fixing belt is fixedly connected to the front end of the protective shell, the buckle belt is fixedly connected to the rear end of the protective shell, and the core fixing belt is matched with the buckle belt to fix the core; The first operating rod comprises a handle, an adjusting handle, two saw blade operating rods, a connecting screw, a connecting handle and two fixing clips, the connecting handle is vertically connected between the handle and the adjusting handle, the lower end of the handle is fixedly connected to the upper end of the connecting handle, the connecting handle is threadedly matched with the connecting screw, the fixing clip is arranged in the adjusting handle, the saw blade operating rod is clamped between the two fixing clips, the first saw blade is fixedly connected to the lower part of the saw blade operating rod, the connecting screw comprises a separate connecting screw left part and a connecting screw right part, the lower end of the left part of the connecting screw is fixedly connected to the upper end of one of the fixing clips, the lower end of the right part of the connecting screw is fixedly connected to the upper end of the other fixing clip, the left part of the connecting screw and the right part of the connecting screw are separated, the two fixing clips are separated, and the saw blade operating rod is fixed after the left part of the connecting screw and the right part of the connecting screw are contacted and tightened; The upper end of the protective shell is provided with a first opening, and a first scale is arranged at the first opening.
2. The sampler suitable for core sample sampling according to claim 1, characterized in that: The first operating rod also includes a nut sleeve, which is fixedly arranged inside the connecting handle, and the connecting screw is threadably matched with the nut sleeve.
3. The sampler suitable for core sample sampling according to claim 2, characterized in that: The second operating rod includes a hand-held portion and a non-hand-held portion, the diameter of the hand-held portion is larger than the diameter of the non-hand-held portion, the hand-held portion is fixedly connected to the non-hand-held portion, and the second saw blade is connected to the end of the non-hand-held portion.
4. The sampler suitable for core sample sampling according to claim 3, characterized in that: The sampler also includes a support frame, which includes two first support rods and two second support rods, the two first support rods are respectively fixedly connected between the left end and the right end of the protective shell, one end of the first support rod is vertically connected to the left end of the protective shell, and the other end of the first support rod is vertically connected to the right end of the protective shell, the two second support rods are respectively fixedly connected between the front end and the rear end of the protective shell, one end of the second support rod is vertically connected to the front end of the protective shell, and the other end of the second support rod is vertically connected to the rear end of the protective shell, the first support rod is connected to the corresponding saw blade operating rod through a first spring, and the second support rod is connected to the corresponding non-hand-held part through a second spring.
5. The sampler suitable for core sample sampling according to claim 1, characterized in that: The sampler also includes a plurality of size fixers, which include a first fixing screw, a second fixing screw and a fixing strip. A second opening is respectively provided at the left end and the right end of the protective shell, a first groove is provided above the second opening, and a second groove is provided below the second opening. A first fixing screw hole and a second fixing screw hole are respectively provided on the fixing strip. The first fixing screw passes through the first fixing screw hole and is inserted into the second groove. The second fixing screw passes through the second fixing screw hole and is inserted into the first groove. Every two size fixers form a group, and a group of size fixers is provided at each second opening.
6. The sampler suitable for core sample sampling according to claim 1, characterized in that: A plurality of small holes are evenly arranged on the core fixing belt, the end of the buckle belt is bent downward to form a U-shaped groove, a connecting buckle is arranged at the notch of the U-shaped groove to close it, a buckle is passed through the U-shaped groove, a buckle rod is movably connected to the buckle, and the end of the buckle rod is inserted into the small hole to buckle and connect the core fixing belt with the buckle belt.
7. The sampler suitable for core sample sampling according to claim 1, characterized in that: A third opening in a semicircular shape is respectively formed at the front end and the rear end of the protective shell; a fourth opening is formed at the lower end of the protective shell, and the fourth opening is connected with the two third openings to form a semi-cylindrical cavity.