Sampling device for coal mine investigation

Abstract

The utility model discloses a sampling device for coal mine exploration. The sampling device comprises a sampling barrel, a handle is installed on the sampling barrel, a spiral drill bit is installed at one end of the sampling barrel, a digging structure is installed on the spiral drill bit, a connecting rod is movably installed in the sampling barrel, a sample storage structure is installed on the connecting rod, the connecting rod is sleeved with a limiting lantern ring, a limiting structure is installed on the limiting lantern ring, and an arc-shaped baffle is installed on the digging structure. A linkage structure is installed on the arc-shaped baffle, the digging structure comprises a plurality of material taking scraping plates, and the material taking scraping plates are installed on the sampling barrel; when the sampling device is used, the spiral drill bit is arranged above a sampling point and the sampling barrel is rotated, so that the spiral drill bit drives the sampling barrel to drill into the sampling point, and the material taking scraping plate can be in a closed state in the process of drilling into or taking out the sampling point, so that samples with different depths are prevented from entering the material storage box I or the material storage box II through the sampling barrel; the influence on subsequent analysis results of the samples due to mixing of the samples at different depths is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine exploration equipment, and specifically relates to a sampling device for coal mine exploration. Background Technique

[0002] Coal mine exploration sampling is an important link in the coal mine exploration process, aiming to collect representative samples from coal seams at different depths through scientific methods and means.

[0003] In the prior art, a patent with the publication number CN217483908U discloses a sampling device for coal mine exploration, which includes a sampling cylinder, a first driving part for driving the sampling cylinder to drill axially, and a second driving part for driving the sampling cylinder to rotate. A plurality of feed ports are arranged on the side surface of the sampling cylinder, and the plurality of feed ports are arranged in sequence along the axial direction of the sampling cylinder. A cutting mechanism is provided at each feed port to cut the rock and soil on the side surface of the sampling cylinder as the sampling cylinder rotates and make the cut rock and soil fall into the feed port. Among them, an aggregate part is detachably connected in the sampling cylinder, and the aggregate part includes a plurality of material receiving mechanisms, and the number of the material receiving mechanisms is the same as that of the feed ports. The material receiving mechanism is used to receive the rock and soil flowing in from the corresponding feed port. This device can complete sampling at multiple rock and soil layer depths at one time, improving the sampling efficiency.

[0004] However, the cutting mechanism for sampling in the above patent is always in an open state. During the process of the cutting mechanism following the sampling cylinder to penetrate into the sampling point, coal slag at different depths is likely to enter the aggregate part in the sampling cylinder through the opening of the cutting mechanism, resulting in mixing with the samples taken subsequently, affecting the analysis results of the sampled samples. Therefore, a sampling device for coal mine exploration is needed to meet people's needs. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sampling device for coal mine exploration to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sampling device for coal mine exploration, including a sampling cylinder; a handle is installed on the sampling cylinder, a spiral drill bit is installed at one end of the sampling cylinder, a digging structure is installed on the spiral drill bit, a connecting rod is movably installed in the sampling cylinder, a sample storage structure is installed on the connecting rod, a limiting collar is sleeved on the connecting rod, a limiting structure is installed on the limiting collar, an arc-shaped baffle is installed on the digging structure, and a linkage structure is installed on the arc-shaped baffle.

[0007] Preferably, the digging structure includes a plurality of material scraping plates, the material scraping plates are installed on the sampling cylinder, and a plurality of feeding grooves are opened on the sampling cylinder, and the feeding grooves are communicated with the material scraping plates.

[0008] Preferably, the sample storage structure includes a first support rod, which is installed on one side of the connecting rod. A first storage box is installed on one side of the first support rod. A second support rod is installed on one side of the first storage box. A second storage box is installed on the second support rod. Both the first storage box and the second storage box are located inside the sampling cylinder. A material taking handle is installed on the connecting rod.

[0009] Preferably, the limiting structure includes a threaded sleeve, which is rotatably sleeved on the connecting rod. The limiting sleeve ring is in contact with the inner wall of the threaded sleeve. The threaded sleeve is threadedly installed on the sampling cylinder. Threads adapted to the threaded sleeve are provided on the outer surface of the sampling cylinder.

[0010] Preferably, the linkage structure includes a first connecting seat, which is installed on the arc-shaped baffle. The arc-shaped baffle is slidably installed on the inner wall of the material taking scraper. A connecting plate is rotatably installed on the first connecting seat. A second connecting seat is rotatably installed on the connecting plate. An installation rod is installed on the second connecting seat. The installation rod is rotatably installed on the inner wall of the sampling cylinder. A turntable is installed at one end of the installation rod. The turntable is rotatably installed on the bottom inner wall of the sampling cylinder. The same positioning groove is provided on the connecting rod, the first support rod, the first storage box, the second support rod and the second storage box. The installation rod is slidably installed in the positioning groove.

[0011] Preferably, arc-shaped guiding grooves are provided on both inner walls of the material taking scraper. Arc-shaped guiding strips are slidably installed in the two arc-shaped guiding grooves respectively. The two arc-shaped guiding strips are installed on both sides of the arc-shaped baffle respectively.

[0012] Preferably, a rotating groove is provided on the inner wall of the sampling cylinder. The turntable is rotatably installed in the rotating groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] (1) In the utility model, when in use, the spiral drill bit is placed above the sampling point and the sampling cylinder is rotated, so that the spiral drill bit drives the sampling cylinder to drill into the sampling point. During the process, the arc-shaped baffle can block the material taking scraper to prevent samples at different depths from entering the sampling cylinder during the process of drilling into the sampling point. After the sampling cylinder drills into the specified depth, the threaded sleeve is rotated to loosen the connecting rod. At this time, the material taking handle is rotated to open the arc-shaped baffle. Then the sampling cylinder is rotated to drive the material taking scraper to dig the samples in the drill holes at different depths into the first storage box and the second storage box for storage respectively. When taking out the sampling cylinder, the material taking handle can be rotated in the reverse direction to close the material taking scraper, so that the material taking scraper can be in a closed state during the process of drilling into or taking out the sampling point, preventing samples at different depths from entering the first storage box or the second storage box through the sampling cylinder and preventing the samples at different depths from being mixed together, which affects the subsequent analysis results of the samples.

[0015] (2) By rotating the threaded sleeve to disengage it from the limit collar and the sampling cylinder, the connection restriction between the connecting rod and the sampling cylinder can be released at this time. The connecting rod can be pulled out of the sampling cylinder, and during this process, the storage box one and the storage box two can be taken out of the sampling cylinder to facilitate the removal of the samples in the storage box one and the storage box two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a three-dimensional structural schematic diagram of a sampling device for coal mine exploration proposed by the present utility model;

[0017] Figure 2 FIG. is a sectional structural schematic diagram of a sampling device for coal mine exploration proposed by the present utility model;

[0018] Figure 3 FIG. is an exploded structural schematic diagram of a sampling device for coal mine exploration proposed by the present utility model;

[0019] Figure 4 FIG. is a sectional structural schematic diagram of the limit collar of a sampling device for coal mine exploration proposed by the present utility model;

[0020] Figure 5 FIG. is a sectional structural schematic diagram of the material taking scraper of a sampling device for coal mine exploration proposed by the present utility model;

[0021] Figure 6 FIG. is a structural schematic diagram of the arc-shaped baffle of a sampling device for coal mine exploration proposed by the present utility model.

[0022] In the figure: 100, sampling cylinder; 101, handle; 200, spiral drill bit; 201, material taking scraper; 202, feeding groove; 300, connecting rod; 301, support rod one; 302, storage box one; 303, support rod two; 304, storage box two; 305, material taking handle; 400, limit collar; 401, threaded sleeve; 500, arc-shaped baffle; 501, connecting seat one; 502, connecting plate; 503, connecting seat two; 504, mounting rod; 505, turntable; 506, arc-shaped guide groove; 507, arc-shaped guide bar; 508, positioning groove; 509, rotating groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-6The utility model provides a technical solution: a sampling device for coal mine exploration, including a sampling barrel 100; a handle 101 is installed on the sampling barrel 100, a spiral drill bit 200 is installed at one end of the sampling barrel 100, and a digging structure is installed on the spiral drill bit 200; a connecting rod 300 is movably installed in the sampling barrel 100, and a sample storage structure is installed on the connecting rod 300; a limiting collar 400 is sleeved on the connecting rod 300, and a limiting structure is installed on the limiting collar 400; and a digging structure is installed on the digging structure. It is equipped with an arc-shaped baffle 500, on which a linkage structure is installed. When in use, the sampling barrel 100 is drilled into the sampling point, and the arc-shaped baffle 500 can be used to block the digging structure. When the sampling barrel 100 reaches the specified depth, the linkage mechanism is used to drive the arc-shaped baffle 500 to open. At this time, by setting the digging structure on the sampling barrel 100, the sample on the inner wall of the borehole can be dug into the sample storage structure, and by setting the limiting structure, the connection or disassembly between the sample storage structure and the sampling barrel 100 can be achieved.

[0025] Furthermore, the excavation structure includes a plurality of material scrapers 201, which are installed on the sampling barrel 100. The sampling barrel 100 is provided with a plurality of material feed troughs 202, which are connected to the material scrapers 201. The sampling barrel 100 is rotated and held to prevent the sampling barrel 100 from continuing to excavate. At the same time, the rotating sampling barrel 100 will drive the material scrapers 201 to dig samples from the side wall of the borehole, so that the samples enter the interior through the material feed troughs 202 at the corresponding positions.

[0026] Furthermore, the sample storage structure includes a support rod 301, which is installed on one side of the connecting rod 300, and a storage box 1 302 is installed on one side of the support rod 301, and a support rod 2 303 is installed on one side of the storage box 1 302, and a storage box 2 304 is installed on the support rod 2 303. The storage box 1 302 and the storage box 2 304 are both located in the sampling tube 100, and a material collection handle 305 is installed on the connecting rod 300. The samples can fall into the storage box 1 302 and the storage box 2 304 for storage through the corresponding position of the feeding trough 202.

[0027] Furthermore, the limiting structure includes a threaded sleeve 401, which is rotatably sleeved on the connecting rod 300, and the limiting collar 400 contacts the inner wall of the threaded sleeve 401. The threaded sleeve 401 is threadedly installed on the sampling tube 100, and the outer surface of the sampling tube 100 is provided with a thread that matches the threaded sleeve 401. When the threaded sleeve 401 is rotated, the threaded sleeve 401 will rotate on the connecting rod 300, and at the same time, the rotating threaded sleeve 401 will move by cooperating with the thread of the sampling tube 100, so that the moving threaded sleeve 401 reduces the force of squeezing the limiting collar 400, or completely detaches from the sampling tube 100 and the limiting collar 400. At this time, the connection restriction between the sampling tube 100 and the connecting rod 300 can be released.

[0028] Furthermore, the linkage structure includes a first connecting seat 501 which is installed on the arc-shaped baffle 500. The arc-shaped baffle 500 is slidably installed on the inner wall of the material taking scraper 201. A connecting plate 502 is rotatably installed on the first connecting seat 501. A second connecting seat 503 is rotatably installed on the connecting plate 502. An installation rod 504 is installed on the second connecting seat 503. The installation rod 504 is rotatably installed on the inner wall of the sampling cylinder 100. One end of the installation rod 504 is provided with a turntable 505. The turntable 505 is rotatably installed on the bottom inner wall of the sampling cylinder 100. The connecting rod 300, the first support rod 301, the first storage box 302, the second support rod 303 and the second storage box 304 are provided with the same positioning groove 508. The installation rod 504 is slidably installed in the positioning groove 508. When the connecting rod 300 rotates, it can drive the installation rod 504 to move in a circular motion. The installation rod 504 moving in a circular motion pulls the arc-shaped baffle 500 to move. The continuously moving arc-shaped baffle 500 can open the material taking scraper 201.

[0029] Furthermore, arc-shaped guide grooves 506 are formed in both inner walls of the material taking scraper 201. Arc-shaped guide bars 507 are slidably installed in the two arc-shaped guide grooves 506 respectively. The two arc-shaped guide bars 507 are respectively installed on both sides of the arc-shaped baffle 500. When the arc-shaped baffle 500 moves, it will drive the arc-shaped guide bars 507 on both sides to rotate in the two arc-shaped guide grooves 506 respectively, thereby restricting the moving direction of the arc-shaped baffle 500.

[0030] Furthermore, a rotating groove 509 is formed in the inner wall of the sampling cylinder 100. The turntable 505 is rotatably installed in the rotating groove 509. The installation rod 504 moving in a circular motion will drive the turntable 505 to rotate in the rotating groove 509, thereby preventing the installation rod 504 from disengaging.

[0031] The working principle is as follows: the spiral drill bit 200 is placed above the sampling location of the coal mine, and the sampling barrel 100 is driven to rotate by rotating the handle 101, so that the sampling barrel 100 drives the spiral drill bit 200 to rotate, and the spiral drill bit 200 drills into the sampling point. During the process, the arc-shaped baffle 500 on the material scraper 201 can seal the material scraper 201 to prevent the sample from entering the material scraper 201 during the drilling process. After the sampling barrel 100 drills into the specified depth, the threaded sleeve 401 can be rotated, and the threaded sleeve 401 will rotate on the connecting rod 300. At the same time, the rotating threaded sleeve 401 will move by cooperating with the thread of the sampling barrel 100, so that the moving threaded sleeve 401 reduces the force of squeezing the limiting collar 400, so that the connecting The rod 300 can be rotated. At this time, the material-taking handle 305 can be rotated to drive the connecting rod 300 to rotate. When the connecting rod 300 rotates, it can drive the support rod 1 301, the storage box 1 302, the support rod 2 303 and the storage box 2 304 to rotate. During the process, it will drive the installation rod 504 to move in a circle through the positioning groove 508. The installation rod 504 in a circular motion will drive the turntable 505 to rotate in the rotation groove 509, thereby preventing the installation rod 504 from disengaging. The installation rod 504 in a continuous circular motion will drive the connecting seat 2 503 to move, so that the connecting seat 2 503 drives one end of the connecting plate 502 to flip and move, and the other end of the connecting seat 2 503 rotates on the connecting seat 1 501 and pulls the connecting seat 1 501 to move. The moving connecting seat 501 drives the arc baffle 500 to move. When the arc baffle 500 moves, it drives the arc guide bars 507 on both sides to rotate in the two arc guide grooves 506 respectively, thereby limiting the moving direction of the arc baffle 500. The continuously moving arc baffle 500 can open the material scraping plate 201. After opening, the threaded sleeve 401 can be rotated in the reverse direction to press the limiting collar 400 toward the sampling barrel 100 again to prevent the connecting rod 300 from rotating and loosening, so that the arc baffle 500 can remain in the open state. At this time, the sampling barrel 100 is rotated again and held to prevent the sampling barrel 100 from continuing to excavate. At the same time, the rotating sampling barrel 100 will drive the material scraping plate 201 to dig samples from the side wall of the borehole, so that the sample can pass through the sampling barrel 100. The materials fall into the material storage box 1 302 and the material storage box 2 304 through the material feeding trough 202 at the corresponding position for storage. After completion, the material taking handle 305 is rotated in the opposite direction to move the arc baffle 500 to reset, and then the material taking scraper 201 is re-sealed to prevent samples of other depths from entering from the material taking scraper 201 when the sampling tube 100 is pulled out. After the sampling tube 100 is taken out from the sampling location, the threaded sleeve 401 can be rotated to completely disengage it from one side of the sampling tube 100 and the limiting collar 400, thereby releasing the connection restriction between the sampling tube 100 and the connecting rod 300. At this time, the connecting rod 300 can be pulled out to draw it out from the sampling tube 100. In the process, the material storage box 1 302 and the material storage box 2 304 containing the samples can be drawn out to take out the samples.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sampling device for coal mine exploration, comprising a sampling cylinder (100); characterized in that: A handle (101) is installed on the sampling cylinder (100). One end of the sampling cylinder (100) is installed with a spiral drill bit (200). A digging structure is installed on the spiral drill bit (200). A connecting rod (300) is movably installed in the sampling cylinder (100). A sample storage structure is installed on the connecting rod (300). A limiting collar (400) is sleeved on the connecting rod (300). A limiting structure is installed on the limiting collar (400). An arc-shaped baffle (500) is installed on the digging structure. A linkage structure is installed on the arc-shaped baffle (500).

2. The sampling device for coal mine exploration according to claim 1, characterized in that: The digging structure includes a plurality of material scraping plates (201). The material scraping plates (201) are installed on the sampling cylinder (100). A plurality of feeding grooves (202) are opened on the sampling cylinder (100). The feeding grooves (202) communicate with the material scraping plates (201).

3. The sampling device for coal mine exploration according to claim 1, characterized in that: The sample storage structure includes a first support rod (301). The first support rod (301) is installed on one side of the connecting rod (300). A first storage box (302) is installed on one side of the first support rod (301). A second support rod (303) is installed on one side of the first storage box (302). A second storage box (304) is installed on the second support rod (303). Both the first storage box (302) and the second storage box (304) are located inside the sampling cylinder (100). A material taking handle (305) is installed on the connecting rod (300).

4. A sampling device for coal mine exploration according to claim 1, characterized in that: The limiting structure includes a threaded sleeve (401). The threaded sleeve (401) is rotatably sleeved on the connecting rod (300). The limiting collar (400) is in contact with the inner wall of the threaded sleeve (401). The threaded sleeve (401) is threadedly installed on the sampling cylinder (100). The outer surface of the sampling cylinder (100) is provided with threads adapted to the threaded sleeve (401).

5. The sampling device for coal mine exploration according to claim 1, characterized in that: The linkage structure includes a first connecting seat (501). The first connecting seat (501) is installed on the arc-shaped baffle (500). The arc-shaped baffle (500) is slidably installed on the inner wall of the material scraping plate (201). A connecting plate (502) is rotatably installed on the first connecting seat (501). A second connecting seat (503) is rotatably installed on the connecting plate (502). An installation rod (504) is installed on the second connecting seat (503). The installation rod (504) is rotatably installed on the inner wall of the sampling cylinder (100). One end of the installation rod (504) is installed with a turntable (505). The turntable (505) is rotatably installed on the bottom inner wall of the sampling cylinder (100). The connecting rod (300), the first support rod (301), the first storage box (302), the second support rod (303) and the second storage box (304) are provided with the same positioning groove (508). The installation rod (504) is slidably installed in the positioning groove (508).

6. The sampling device for coal mine exploration according to claim 2, characterized in that: Arc-shaped guiding grooves (506) are opened on both inner walls of the material scraping plate (201). Arc-shaped guiding strips (507) are slidably installed in the two arc-shaped guiding grooves (506). The two arc-shaped guiding strips (507) are respectively installed on both sides of the arc-shaped baffle (500).

7. The sampling device for coal mine exploration according to claim 1, characterized in that: A rotating groove (509) is opened on the inner wall of the sampling cylinder (100). The turntable (505) is rotatably installed in the rotating groove (509).

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