Efficient coal sampling device for strip mine

Abstract

The invention discloses an efficient coal sampling device for a strip mine, and relates to the technical field of sampling, the efficient coal sampling device comprises a drill rod, a fixing frame is fixedly connected in the drill rod, a telescopic mechanism for controlling a sampling mechanism to stretch out and draw back is arranged in the fixing frame, and the telescopic mechanism comprises a telescopic control motor arranged on one side of the fixing frame; a threaded rod is arranged at the output end of the telescopic control motor and is in threaded connection with a movable block, the movable block is symmetrically and slidably connected with fixed rods, the fixed rods are fixedly connected with the drill rod, and one side of the movable block is rotationally connected with a first gear. According to the invention, the telescoping mechanism not only controls the telescoping of the sampling mechanism, but also is connected with the storage mechanism through the connecting mechanism, and in each sampling process, the telescoping mechanism drives the storage mechanism to operate through the connecting mechanism, so that samples sampled each time can be independently stored, and mixing of the samples is avoided. The representativeness and accuracy of the sample are remarkably improved, so that the analysis result can better reflect the real composition and characteristics of the coal.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling, and particularly to an efficient coal sampling device for open-pit mines. Background Art

[0002] Open-pit mining is one of the main ways of coal mining, especially when the coal seam is close to the surface. This method has the characteristics of large mining space, excellent working environmental conditions, high level of mechanization and automation, and low mining cost. However, open-pit mining also faces problems such as equipment being vulnerable to weather influence and generating dust pollution.

[0003] After retrieval, a patent with the Chinese patent number CN114577508A discloses a geological sampling device for coal geological exploration, which relates to the technical field of geological exploration equipment and includes a support frame, a hammering assembly, a clamping assembly, and a support assembly. The clamping assembly includes a second rotating shaft, a second rotating rod, and a third rotating rod. The hammering assembly includes a first rotating rod and a pin shaft. The support assembly includes a hinge. A through groove is provided on one side inside the support frame. A first gear is sleeved on the outer side of the second rotating shaft, and a second gear is sleeved on the outer side of the second rotating rod. In the present invention, through the provided hydraulic cylinder and hammering assembly, the hydraulic cylinder can drive the support platform to move in the vertical direction, so that the height of the support platform can be adjusted according to the height of the sampling drill rod, thus ensuring that the hammering effect is not affected. When the first motor works, the output end of the first motor drives the first rotating shaft to rotate. Since the first rotating rod and the first rotating shaft are linked through a first belt and a first pulley, the first rotating rod and the cam rotate together. This patent with the Chinese patent number CN114577508A requires manual hammering of the sampling drill rod, increasing the labor intensity of the staff, and it is unable to effectively limit the position of the sampling drill rod, and it is easy to shake during hammering, which brings inconvenience to the sampling work.

[0004] However, in actual use of the above patent, it is difficult to separately store the samples after multiple samplings. Coal is an inhomogeneous material, and the composition and properties of its various parts may vary greatly. If the samples after multiple samplings are stored mixed, it may cause the composite coal sample to differ greatly from the original sample in composition and properties, thus losing its representativeness. Therefore, an efficient coal sampling device for open-pit mines needs to be proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that it is difficult to separately store the samples after multiple samplings. Coal is an inhomogeneous material, and the composition and properties of its various parts may vary greatly. If the samples after multiple samplings are stored mixed, it may cause the composite coal sample to differ greatly from the original sample in composition and properties, thus losing its representativeness, and to propose an efficient coal sampling device for open-pit mines.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: An efficient coal sampling device for open-pit mines, including a drill pipe. Inside the drill pipe, there is a fixedly connected fixing frame. Inside the fixing frame, there is a telescopic mechanism for controlling the telescopic movement of the sampling mechanism. The telescopic mechanism includes a telescopic control motor arranged on one side of the fixing frame. The output end of the telescopic control motor is provided with a threaded rod. The threaded rod is threadedly connected with a moving block. The moving block is symmetrically slidably connected with fixed rods. The fixed rods are fixedly connected to the drill pipe. One side of the moving block is rotatably connected with a first gear. The first gear is fixedly connected with a sliding rod on the side far away from the moving block. The sliding rod is slidably connected with a chute opened inside the fixing frame. The first gear is meshed with a rack. The rack is meshed with a second gear. The second gear is meshed with a third gear. The third gear is fixedly connected with a sampling platform. The upper part of the sampling platform is provided with a sampling mechanism; Inside the drill pipe, there is a storage mechanism for separately storing the samples after multiple samplings. The storage mechanism includes a turntable arranged inside the drill pipe. The turntable is rotatably connected to the drill pipe. There are three detachable sample storage cylinders for storing samples on the upper part of the turntable. Inside the drill pipe, there is a connection mechanism for connecting the telescopic mechanism and the storage mechanism. When the telescopic mechanism drives the sampling to move, the storage mechanism is driven to operate through the connection mechanism. The operation of the storage mechanism replaces the sample storage cylinders to separately store the samples after multiple samplings; Among them, the fixed rods are symmetrically arranged, which is convenient for keeping the moving block stable when it slides.

[0007] The above technical solution further includes: The threaded rod is rotatably connected to the drill pipe. The rack is slidably connected to the moving block. The second gear is rotatably connected to the moving block. The sampling platform is rotatably connected to the moving block; The sampling mechanism includes a sampling control motor arranged on the upper part of the sampling platform. The output end of the sampling control motor is provided with a sampling pipe for storing samples during sampling. The sampling pipe is rotatably connected to the sampling platform. On the side far away from the sampling control motor of the sampling pipe, there is a sampling drill bit for sampling and with adjustable blade angles; Among them, the adjustable blade angles of the sampling drill bit are convenient for cutting the samples short after sampling.

[0008] The connection mechanism includes a second rotating shaft arranged on one side of the drill pipe. The second rotating shaft is rotatably connected to the drill pipe. The second rotating shaft is fixedly connected to the threaded rod of the telescopic mechanism. On the side far away from the drill pipe of the second rotating shaft, there is a fixed disk.

[0009] The fixed disk is rotatably connected to a third rotating shaft away from the second rotating shaft. The third rotating shaft is fixedly connected to a ratchet wheel. A ratchet pawl that always fits with the teeth on the ratchet wheel is arranged on one side of the fixed disk close to the third rotating shaft. Among them, the ratchet pawl facilitates driving the ratchet wheel to rotate in a single direction.

[0010] The third rotating shaft is fixedly connected to a bevel gear set. The bevel gear set is fixedly connected to a first rotating shaft. The first rotating shaft is rotatably connected to the drill pipe. The first rotating shaft is drivingly connected to a belt. The belt is drivingly connected to the turntable of the storage mechanism.

[0011] A drill bit body for drilling is arranged at the lower part of the drill pipe. A drill bit control motor for controlling the rotation of the drill bit body is fixedly installed inside the drill pipe.

[0012] The upper part of the drill pipe is fixedly connected to a driving disk. A control panel is arranged inside the driving disk. A slidable plate that can be opened and closed is arranged on one side of the drill pipe. Among them, the slidable plate is convenient to open during the sampling operation and close during drilling.

[0013] The present invention has the following beneficial effects: 8. In the present invention, the telescopic mechanism not only controls the telescoping of the sampling mechanism, but also is connected to the storage mechanism through the connecting mechanism. During each sampling process, the telescopic mechanism drives the storage mechanism to operate through the connecting mechanism, ensuring that the samples taken each time can be stored separately, avoiding the mixing of samples. This significantly improves the representativeness and accuracy of the samples, making the analysis results more capable of reflecting the true composition and characteristics of the coal.

[0014] 9. In the present invention, the storage mechanism includes a turntable rotatably connected inside the device and a detachable sample storage cylinder. The turntable can rotate to replace different sample storage cylinders. Each sample storage cylinder is used to store the samples taken once, ensuring that the samples will not be mixed. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of a high-efficiency coal sampling device for open-pit mines proposed by the present invention; Figure 2 is an overall structural schematic diagram during drilling in the present invention; Figure 3 is an overall structural schematic diagram during sampling in the present invention; Figure 4 is a cross-sectional view of the inside of the drill pipe in the present invention; Figure 5 is a side view of the telescopic mechanism in the present invention; Figure 6 is Figure 1 a schematic enlarged view of the structure at A in Figure 7 For Figure 5 The enlarged schematic diagram of the structure at position B in

[0016] In the figure: 1, drill pipe; 2, fixed frame; 3, telescopic control motor; 4, threaded rod; 5, fixed rod; 6, moving block; 7, chute; 8, sliding rod; 9, first gear; 10, rack; 11, second gear; 12, third gear; 13, turntable; 14, sample storage cylinder; 15, sliding plate; 16, driving disc; 17, control panel; 18, drill bit body; 19, drill bit control motor; 20, belt; 21, first rotating shaft; 22, sampling control motor; 23, sampling pipe; 24, sampling drill; 25, sampling table; 26, second rotating shaft; 27, fixed disc; 28, pawl; 29, ratchet; 30, third rotating shaft; 31, bevel gear set. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1 As Figure 1 - Figure 7 shown, a high-efficiency coal sampling device for open-pit mines includes a drill pipe 1. A fixed frame 2 is fixedly connected inside the drill pipe 1. An expansion mechanism for controlling the expansion and contraction of the sampling mechanism is provided inside the fixed frame 2. The expansion mechanism includes an expansion control motor 3 arranged on one side of the fixed frame 2. A threaded rod 4 is arranged at the output end of the expansion control motor 3. A moving block 6 is threadedly connected to the threaded rod 4. The moving block 6 is symmetrically slidably connected to a fixed rod 5. The fixed rod 5 is fixedly connected to the drill pipe 1. A first gear 9 is rotatably connected to one side of the moving block 6. A sliding rod 8 is fixedly connected to the side of the first gear 9 away from the moving block 6. The sliding rod 8 is slidably connected to a chute 7 opened inside the fixed frame 2. The first gear 9 is meshed with a rack 10. The rack 10 is meshed with a second gear 11. The second gear 11 is meshed with a third gear 12. The third gear 12 is fixedly connected to a sampling table 25. A sampling mechanism is provided on the upper part of the sampling table 25.

[0019] Inside the drill pipe 1, there is a storage mechanism for separately storing samples after multiple samplings. The storage mechanism includes a turntable 13 arranged inside the drill pipe 1. The turntable 13 is rotatably connected to the drill pipe 1. There are three groups of detachable sample storage cylinders 14 arranged on the upper part of the turntable 13 for storing samples. Inside the drill pipe 1, there is a connection mechanism for connecting the telescopic mechanism and the storage mechanism. When the telescopic mechanism drives the sampler to move, the storage mechanism is driven to operate through the connection mechanism. The operation of the storage mechanism causes the sample storage cylinders 14 to be replaced to separately store samples after multiple samplings.

[0020] The threaded rod 4 is rotatably connected to the drill pipe 1. The rack 10 is slidably connected to the moving block 6. The second gear 11 is rotatably connected to the moving block 6. The sampling table 25 is rotatably connected to the moving block 6.

[0021] The sampling mechanism includes a sampling control motor 22 arranged on the upper part of the sampling table 25. The output end of the sampling control motor 22 is provided with a sampling tube 23 for storing samples during sampling. The sampling tube 23 is rotatably connected to the sampling table 25. On the side of the sampling tube 23 away from the sampling control motor 22, there is a sampling drill bit 24 for sampling with adjustable blade angles.

[0022] In this embodiment, in the early stage of sampling, the telescopic control motor 3 is started to drive the threaded rod 4 arranged at its output end to rotate. The threaded rod 4 causes the moving block 6 connected by threads to slide on the fixed rod 5 connected by sliding. The symmetrically fixedly connected fixed rods 5 facilitate the stable movement of the moving block 6. When the moving block 6 moves, the first gear 9 drives the sliding rod 8 to rotate inside the chute 7. When the sliding rod 8 slides on the inclined part of the chute 7, the sliding rod 8 drives the first gear 9 to rotate. The first gear 9 causes the meshing-connected rack 10 to slide inside the fixed frame 2. The sliding of the rack 10 drives the third gear 12 to rotate through the meshing-connected second gear 11. The third gear 12 causes the fixedly connected sampling table 25 to rotate until the sampling table 25 is in a horizontal position. When the sliding rod 8 slides on the horizontal part of the chute 7, at this time, the sampling table 25 is always in a horizontal position.

[0023] Until the sampling table 25 extends out of the drill pipe 1, at this time, sampling is carried out through the sampling mechanism, that is, the sampling control motor 22 is started to drive the sampling tube 23 arranged at its output end to drive the sampling drill bit 24 to rotate. The sampling tube 23 is cylindrical, and the sampled sample is in a regular cylindrical shape. The angle between the blades of the sampling drill bit 24 is adjustable, which is convenient for sampling.

[0024] Meanwhile, when the telescopic mechanism operates, it will drive the storage mechanism to operate through the connecting mechanism, that is, it will cause the turntable 13 to rotate. The rotation of the turntable 13 will cause the three sample storage cylinders 14 arranged on the upper part to rotate, which is convenient for replacing the sample storage cylinders 14. During multiple samplings, the samples are sent into different sample storage cylinders 14 for storage.

[0025] After sampling, by starting the telescopic control motor 3 to drive the threaded rod 4 to rotate in the reverse direction, that is, the telescopic mechanism will drive the sampling mechanism to return to its original position, that is, the sampling table 25 will tilt until the opening of the sampling tube 23 faces downward to send the sample stored inside the sampling tube 23 into the sample storage cylinder 14 for storage.

[0026] Embodiment 2 As Figure 1 - Figure 7 As shown in the figure, the connecting mechanism includes a second rotating shaft 26 arranged on one side of the drill rod 1. The second rotating shaft 26 is rotatably connected to the drill rod 1, and the second rotating shaft 26 is fixedly connected to the threaded rod 4 of the telescopic mechanism. A fixed disk 27 is fixedly connected to the side of the second rotating shaft 26 away from the drill rod 1.

[0027] The fixed disk 27 is rotatably connected to a third rotating shaft 30 away from the second rotating shaft 26. A ratchet wheel 29 is fixedly connected to the third rotating shaft 30. A pawl 28 that always fits with the teeth on the ratchet wheel 29 is arranged on one side of the fixed disk 27 close to the third rotating shaft 30.

[0028] The third rotating shaft 30 is fixedly connected to a bevel gear set 31. The bevel gear set 31 is fixedly connected to a first rotating shaft 21. The first rotating shaft 21 is rotatably connected to the drill rod 1. The first rotating shaft 21 is drivingly connected to a belt 20. The belt 20 is drivingly connected to the turntable 13 of the storage mechanism.

[0029] A drill bit body 18 for drilling is arranged at the lower part of the drill rod 1. A drill bit control motor 19 for controlling the rotation of the drill bit body 18 is fixedly installed inside the drill rod 1.

[0030] A driving disk 16 is fixedly connected to the upper part of the drill rod 1. A control panel 17 is arranged inside the driving disk 16. A slidable plate 15 that can be opened and closed is arranged on one side of the drill rod 1.

[0031] In this embodiment, when the telescopic mechanism drives the adoption mechanism to move out of the drill pipe 1, the threaded rod 4 will drive the second rotating shaft 26 to rotate. The second rotating shaft 26 will cause the fixed disk 27 to rotate. The fixed disk 27 will drive the ratchet wheel 29 to rotate through the pawl 28. The ratchet wheel 29 will drive the bevel gear set 31 to rotate through the third rotating shaft 30. The bevel gear set 31 will cause the fixedly connected first rotating shaft 21 to rotate. The first rotating shaft 21 will drive the turntable 13 to rotate through the belt 20 connected by transmission. When the telescopic mechanism drives the adoption mechanism to restore to the original position, at this time, under the action of the pawl 28 and the ratchet wheel 29, it will not drive the third rotating shaft 30 to rotate, that is, it will not cause the storage mechanism to operate.

[0032] The drill bit body 18 provided at the lower part of the drill pipe 1 and the drill bit control motor 19 provided inside the drill pipe 1 facilitate the drilling function of the device. The slide plate 15 provided on one side of the drill pipe 1 facilitates closing during drilling to prevent impurities from entering the inside of the drill pipe 1, and the slide plate 15 can be opened during sampling to facilitate sampling.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient coal sampling device for open-pit mines, comprising a drill rod (1), characterized in that: The drill rod (1) is fixedly connected to a fixed frame (2) inside, and a telescopic mechanism for controlling the extension and retraction of the sampling mechanism is provided inside the fixed frame (2). The telescopic mechanism comprises a telescopic control motor (3) arranged on one side of the fixed frame (2), and a threaded rod (4) is arranged at the output end of the telescopic control motor (3). The threaded rod (4) is threadedly connected to a moving block (6), and the moving block (6) is symmetrically slidably connected to a fixed rod (5). The fixed rod (5) is fixedly connected to the drill rod (1), and one side of the moving block (6) is rotated. A first gear (9) is connected, and a sliding rod (8) is fixedly connected to the side of the first gear (9) away from the moving block (6), and the sliding rod (8) is slidably connected to a sliding groove (7) provided inside the fixed frame (2), and the first gear (9) is meshedly connected to a rack (10), and the rack (10) is meshedly connected to a second gear (11), and the second gear (11) is meshedly connected to a third gear (12), and the third gear (12) is fixedly connected to a sampling platform (25), and a sampling mechanism is provided on the upper part of the sampling platform (25); The drill rod (1) is provided with a storage mechanism for separately storing samples after multiple samplings. The storage mechanism comprises a turntable (13) arranged inside the drill rod (1). The turntable (13) and the drill rod (1) are rotatably connected. Three groups of detachable sample storage tubes (14) for storing samples are provided on the upper part of the turntable (13). The drill rod (1) is provided with a connecting mechanism for connecting a telescopic mechanism and a storage mechanism. When the telescopic mechanism drives the sample to move, the storage mechanism is driven to operate through the connecting mechanism. When the storage mechanism operates, the sample storage tube (14) is replaced to separately store the multiple samplings.

2. The high-efficiency coal sampling device for open-pit mines according to claim 1, characterized in that: The threaded rod (4) and the drill rod (1) are rotationally connected, the rack (10) and the moving block (6) are slidingly connected, the second gear (11) and the moving block (6) are rotationally connected, and the sampling platform (25) and the moving block (6) are rotationally connected.

3. The high-efficiency coal sampling device for open-pit mines according to claim 1, characterized in that: The sampling mechanism comprises a sampling control motor (22) arranged on the upper part of a sampling platform (25); a sampling tube (23) for storing samples during sampling is provided at the output end of the sampling control motor (22); the sampling tube (23) is rotatably connected to the sampling platform (25); and a sampling drill (24) for sampling and having an adjustable blade angle is provided on a side of the sampling tube (23) away from the sampling control motor (22).

4. The high-efficiency coal sampling device for open-pit mines according to claim 1, characterized in that: The connection mechanism comprises a second rotating shaft (26) arranged on one side of the drill rod (1); the second rotating shaft (26) and the drill rod (1) are rotationally connected, the second rotating shaft (26) and the threaded rod (4) of the telescopic mechanism are fixedly connected, and a fixed plate (27) is fixedly connected to the side of the second rotating shaft (26) away from the drill rod (1).

5. The high-efficiency coal sampling device for open-pit mines according to claim 4, characterized in that: The fixed disk (27) is rotatably connected to a third rotating shaft (30) away from the second rotating shaft (26); the third rotating shaft (30) is fixedly connected to a ratchet (29); and a ratchet pawl (28) which always stays in contact with teeth on the ratchet (29) is provided on a side of the fixed disk (27) close to the third rotating shaft (30).

6. The high-efficiency coal sampling device for open-pit mines according to claim 5, characterized in that: The third rotating shaft (30) is fixedly connected to a bevel gear set (31), the bevel gear set (31) is fixedly connected to a first rotating shaft (21), the first rotating shaft (21) is rotationally connected to the drill rod (1), the first rotating shaft (21) is transmission-connected to a belt (20), and the belt (20) is transmission-connected to a rotating disk (13) of the storage mechanism.

7. The high-efficiency coal sampling device for open-pit mines according to claim 1, characterized in that: A drill bit body (18) for drilling holes is arranged at the lower part of the drill rod (1), and a drill bit control motor (19) for controlling the rotation of the drill bit body (18) is fixedly installed inside the drill rod (1).

8. The high-efficiency coal sampling device for open-pit mines according to claim 1, characterized in that: The upper part of the drill rod (1) is fixedly connected to a driving disk (16), a control panel (17) is arranged inside the driving disk (16), and a sliding plate (15) that can be opened and closed is arranged on one side of the drill rod (1).

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