Coal sampling device

Abstract

The present application provides a kind of coal sampling device, which comprises: coal bucket, with coal cavity, the upper end of coal bucket is provided with with the feed inlet being communicated with coal cavity, the lower end of coal bucket is provided with with the discharge outlet being communicated with coal cavity, the side wall of coal bucket is provided with with the sampling port being communicated with coal cavity;Sampling assembly includes rotating plate, rotating plate is rotatably arranged in coal cavity around its extension direction, the extension direction of rotating plate is arranged at an angle with horizontal plane, the lower end of rotating plate extends to sampling port, the upper end of rotating plate extends to the side wall of coal cavity;Wherein, rotating plate has upright state and flat state, the lower end of rotating plate is provided with baffle, when rotating plate is in upright state, baffle is shielded at sampling port, when rotating plate is in flat state, baffle avoids sampling port. Through the technical scheme provided in the present application, the problem that the coal transportation is interrupted by manual sampling in the related art can be solved.

Description

Technical Field

[0001] This invention relates to the field of coal mining equipment technology, and more specifically, to a coal sampling device. Background Technology

[0002] In order to ensure the stable quality of the coal mined during the mining process, it is necessary to take regular samples of the coal during the mining and transportation process to test information such as the weight, carbon content and moisture content of the coal.

[0003] In related technologies, manual sampling is used to periodically sample transported coal, which requires stopping coal transportation before the manual sampling operation can be carried out.

[0004] However, the use of manual sampling in related technologies would disrupt coal transportation. Summary of the Invention

[0005] This invention provides a coal sampling device to solve the problem that manual sampling in related technologies would interrupt coal transportation.

[0006] This invention provides a coal mining sampler, comprising: a coal mining bucket having a coal mining chamber, an inlet connected to the coal mining chamber at the upper end of the coal mining bucket, an outlet connected to the coal mining chamber at the lower end of the coal mining bucket, and a sampling port connected to the coal mining chamber on the side wall of the coal mining bucket; and a sampling assembly including a rotating plate rotatably disposed within the coal mining chamber about its extension direction, the extension direction of the rotating plate being at an angle to the horizontal plane, the lower end of the rotating plate extending to the sampling port, and the upper end of the rotating plate extending to the side wall of the coal mining chamber; wherein the rotating plate has an upright state and a horizontal state, and a baffle is provided at the lower end of the rotating plate. When the rotating plate is in the upright state, the baffle blocks the sampling port; when the rotating plate is in the horizontal state, the baffle avoids the sampling port.

[0007] Furthermore, the sampling assembly also includes coal crushing components capable of crushing coal, which are disposed on the rotating plate. When the rotating plate is in a flat position, the coal crushing components are located on the upper surface of the rotating plate.

[0008] Furthermore, the coal crushing component includes a coal crushing knife and a coal crushing drive component, which is connected to the coal crushing knife to drive the coal crushing knife to rotate.

[0009] Furthermore, the coal shredder includes at least two blades, which have a close-to-each retracted state and a far-to-each extended state.

[0010] Furthermore, the coal crushing component also includes: a rotating shaft; the rotating plate includes a bottom plate and two side plates; when the rotating plate is in a flat position, the two side plates are located on both sides of the bottom plate perpendicular to its extension direction, and the lower ends of the two side plates are connected to the bottom plate; the rotating shaft is located above the bottom plate, and both ends of the rotating shaft are rotatably connected to the two side plates; the coal crushing drive component is drivenly connected to the rotating shaft to drive the rotating shaft to rotate around its axis; a first push block is disposed on the rotating shaft, and the first push block is movable relative to the rotating shaft along the axis of the rotating shaft, and the first push block and the rotating shaft are anti-rotationally engaged; a push rod, both ends of the push rod are hinged to the first push block and the middle of the blade, respectively, and one end of the blade is hinged to the rotating shaft; a second push block is disposed on the rotating shaft, and the second push block is movable relative to the rotating shaft along the axis of the rotating shaft, and the second push block is rotatable relative to the rotating shaft around the axis of the rotating shaft; a first telescopic rod, both ends of the first telescopic rod are hinged to the bottom plate and the second push block, respectively, and the first telescopic rod can drive the second push block to move on the rotating shaft.

[0011] Furthermore, the coal crushing component also includes a rotating block fixedly mounted on the rotating shaft, with one end of the blade hinged to the rotating block; the coal crushing component also includes a return spring, with both ends of the return spring connected to the blade and the rotating block respectively.

[0012] Furthermore, the side plate and the bottom plate are hinged together, with the pivot being the second telescopic rod. The side plate is provided with a sliding groove, the extension direction of which is perpendicular to the extension direction of the bottom plate. The two ends of the second telescopic rod extend into the sliding grooves of the two side plates respectively. During the extension and retraction of the first telescopic rod, the second telescopic rod can move relative to the bottom plate along the sliding groove; and / or, in the extension direction perpendicular to the bottom plate, the bottom plate includes a first plate segment, a second plate segment, and a third plate segment connected in sequence. The end of the first plate segment away from the second plate segment and the end of the third plate segment away from the second plate segment are both higher than the second plate segment.

[0013] Furthermore, the sampling assembly also includes a guide plate disposed at the lower end of the rotating plate. When the rotating plate is in a flat position, the guide plate is located on the upper surface of the rotating plate and perpendicular to the rotating plate. The guide plate is located on one side of the sampling port, with one end of the guide plate extending to the sampling port and the other end of the guide plate extending upward to the top of the baffle.

[0014] Furthermore, the coal hopper includes a square hopper and a first chute, a second chute, a first end plate, and a second end plate located outside the square hopper. The feed inlet and the discharge outlet are respectively located at both ends of the square hopper. A first through hole and a second through hole are provided on the side wall of the square hopper. The first end of the first chute is connected to the first through hole. The first end plate is located at the second end of the first chute. The sampling port is located on the first end plate. The first end of the second chute is connected to the second through hole. The second end plate is located at the second end of the second chute. The rotating plate extends into the first chute and the second chute respectively at both ends in its extension direction. The baffle is located inside the first chute.

[0015] Furthermore, the coal sampling device also includes a frame, a third telescopic rod, and a swing rod. The two ends of the third telescopic rod are respectively hinged to one end of the frame and one end of the swing rod, and the other end of the swing rod is driven to the upper end of the rotating plate.

[0016] Applying the technical solution of this invention, the coal sampling device includes a coal mining bucket and a sampling assembly. By placing the coal sampling device between a first section and a second section of the coal transport pipeline, the outlet of the first section is connected to the coal mining chamber via the feed inlet of the coal mining bucket. The coal mining chamber is connected to the inlet of the second section via the discharge outlet of the coal mining bucket. When the rotating plate is in an upright state, the rotating plate is parallel to the vertical plane, allowing it to avoid the discharge outlet and feed inlet. Furthermore, a baffle blocks the sampling port, ensuring that all coal in the first section can pass through the coal mining chamber into the second section, thus achieving proper flow of the coal transport pipeline. During normal operation, when sampling of transported coal is required, the rotating plate is rotated to a horizontal position. The horizontal rotating plate is perpendicular to the vertical rotating plate, causing some of the coal in the coal mining chamber to fall onto the rotating plate. Since the extension direction of the rotating plate is set at an angle to the horizontal plane, the upper end of the rotating plate extends to the side wall of the coal mining chamber, and the lower end of the rotating plate extends to the sampling port. The baffle avoids the sampling port, allowing the coal on the rotating plate to flow along the rotating plate to the sampling port under the action of gravity. This enables sampling of transported coal without interrupting the coal transportation, thereby improving production efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a coal sampling device provided according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the sampling component of a coal sampler provided according to an embodiment of the present invention is shown;

[0020] Figure 3 A cross-sectional view of the sampling component of a coal sampler provided according to an embodiment of the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Coal hopper; 11. Coal chamber; 12. Feed inlet; 13. Sampling port; 14. Square bucket; 15. First chute; 16. Second chute; 17. First end plate; 18. Second end plate;

[0023] 20. Sampling assembly; 21. Rotating plate; 211. Base plate; 2111. First plate segment; 2112. Second plate segment; 2113. Third plate segment; 212. Side plate; 2121. Slide chute; 22. Baffle; 23. Coal crushing component; 231. Coal crushing knife; 2311. Blade; 232. Coal crushing drive component; 2321. Rotating motor; 2322. Sliding block; 233. Rotating shaft; 2331. Second telescopic rod; 2332. Universal joint; 2333. First bearing; 234. First push block; 235. Push rod; 236. Second push block; 237. First telescopic rod; 238. Rotating block; 239. Return spring; 24. Guide plate; 25. Drive shaft;

[0024] 31. Frame; 32. Third telescopic pole; 33. Swing pole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, this embodiment of the invention provides a coal mining sampler, which includes a coal mining hopper 10 and a sampling assembly 20. The coal mining hopper 10 has a coal mining chamber 11, an inlet 12 communicating with the coal mining chamber 11 at its upper end, an outlet communicating with the coal mining chamber 11 at its lower end, and a sampling port 13 communicating with the coal mining chamber 11 on its side wall. The sampling assembly 20 includes a rotating plate 21, which is rotatable about its extension direction. The rotating plate 21 is dynamically installed inside the coal mining chamber 11. The extension direction of the rotating plate 21 is set at an angle to the horizontal plane. The lower end of the rotating plate 21 extends to the sampling port 13, and the upper end of the rotating plate 21 extends to the side wall of the coal mining chamber 11. The rotating plate 21 has an upright state and a horizontal state. A baffle 22 is provided at the lower end of the rotating plate 21. When the rotating plate 21 is in the upright state, the baffle 22 blocks the sampling port 13. When the rotating plate 21 is in the horizontal state, the baffle 22 avoids the sampling port 13.

[0027] The coal sampler provided in this embodiment includes a coal hopper 10 and a sampling assembly 20. By placing the sampler between a first and second section of a coal transport pipeline, the outlet of the first section is connected to the coal chamber 11 via the inlet 12 of the coal hopper 10. The coal chamber 11 is connected to the outlet of the coal hopper 10 and the inlet of the second section. When the rotating plate 21 is in an upright position, it is parallel to the vertical plane, allowing it to avoid the outlet and inlet 12. Furthermore, the baffle 22 blocks the sampling port 13, ensuring that all coal in the first section can pass through the coal chamber 11 into the second section, thus realizing the coal transport pipeline... In normal operation, when sampling of transported coal is required, the rotating plate 21 is rotated to a horizontal position. The horizontal rotating plate 21 is perpendicular to the vertical rotating plate 21, causing some of the coal in the coal mining chamber 11 to fall onto the rotating plate 21. Since the extension direction of the rotating plate 21 is set at an angle to the horizontal plane, the upper end of the rotating plate 21 extends to the side wall of the coal mining chamber 11, and the lower end of the rotating plate 21 extends to the sampling port 13. The baffle 22 avoids the sampling port 13, so that the coal on the rotating plate 21 flows along the rotating plate 21 to the sampling port 13 under the action of gravity, realizing the sampling of transported coal without interrupting the coal transportation, which can improve production efficiency.

[0028] It should be noted that the extension direction of the rotating plate 21 refers to... Figure 2 The X direction in the equation.

[0029] like Figure 3 As shown, the sampling assembly 20 also includes a coal crusher 23 capable of crushing coal. The coal crusher 23 is disposed on the rotating plate 21. When the rotating plate 21 is in a horizontal position, the coal crusher 23 is located on the upper surface of the rotating plate 21. When the rotating plate 21 is in a horizontal position, the coal crusher 23 crushes the coal on the rotating plate 21. The crushed coal flows along the rotating plate 21 to the sampling port 13 under the action of gravity, avoiding the coal volume being too large to pass through the sampling port 13, preventing the sampling port 13 from becoming blocked, improving the reliability of the coal sampler's operation, and avoiding interruption of coal transportation for cleaning the sampling port.

[0030] like Figure 3 As shown, the coal crushing component 23 includes a coal crushing blade 231 and a coal crushing drive component 232. The coal crushing drive component 232 is driven to the coal crushing blade 231 to drive the coal crushing blade 231 to rotate. The coal crushing blade 231 is driven to rotate by the coal crushing drive component 232, so that the coal is crushed and cut by the rotating coal crushing blade 231.

[0031] like Figure 3As shown, in order to reduce vibration during the rotation of the coal crusher 231, the coal crusher 23 includes two coal crushers 231, which are spaced apart along the rotating shaft 233 and are symmetrical with respect to the midpoint of the rotating shaft 233.

[0032] like Figure 3 As shown, the coal crusher 231 includes at least two blades 2311, which have a close-to-each retracted state and a far-to-each extended state. When the rotating plate 21 is in an upright state, at least two blades 2311 are in the retracted state to prevent coal from getting stuck between the blades 2311, thus facilitating the smooth transport of coal within the coal mining chamber 11. When the rotating plate 21 is in a horizontal state, at least two blades 2311 are in the extended state, increasing the crushing range of the coal crusher 231 during rotation and improving the crushing effect of the coal crusher on the rotating plate 21.

[0033] like Figure 3As shown, the coal crushing component 23 also includes a rotating shaft 233, a first push block 234, a push rod 235, a second push block 236, and a first telescopic rod 237. The rotating plate 21 includes a base plate 211 and two side plates 212. When the rotating plate 21 is in a flat position, the two side plates 212 are located on both sides of the base plate 211 perpendicular to its extension direction. The lower ends of the two side plates 212 are connected to the base plate 211. The rotating shaft 233 is located above the base plate 211, and both ends of the rotating shaft 233 are rotatably connected to the two side plates 212. The coal crushing drive component 232 is drivenly connected to the rotating shaft 233 to drive the rotating shaft 233 to rotate around its axis. The first push block 234 is disposed on the rotating shaft 233. 34 is movable relative to the axis of the rotating shaft 233, and the first push block 234 and the rotating shaft 233 are anti-rotationally engaged. The two ends of the push rod 235 are respectively hinged to the middle of the first push block 234 and the blade 2311. One end of the blade 2311 is hinged to the rotating shaft 233. The second push block 236 is disposed on the rotating shaft 233. The second push block 236 is movable relative to the rotating shaft 233 along the axis of the rotating shaft 233, and the second push block 236 is rotatable relative to the rotating shaft 233 around the axis of the rotating shaft 233. The two ends of the first telescopic rod 237 are respectively hinged to the base plate 211 and the second push block 236. The first telescopic rod 237 can drive the second push block 236 to move on the rotating shaft 233. During the extension and retraction of the first telescopic rod 237, the first telescopic rod 237 drives the first push block 234 and the second push block 236 to move along the axis of the rotating shaft 233. Since the two ends of the push rod 235 are hinged to the first push block 234 and the middle of the blade 2311 respectively, and one end of the blade 2311 is hinged to the rotating shaft 233, the first push block 234 drives the blade 2311 to rotate relative to the rotating shaft 233 through the push rod 235, thereby changing the angle between the axis of the blade 2311 and the axis of the rotating shaft 233, so that at least two blades 2311 switch between a retracted state and an extended state. Furthermore, when the rotating plate 21 is in a flat state, the coal crushing drive component 232 drives the rotating shaft 233 to rotate around its axis, thereby driving the blade 2311 on the rotating shaft 233 to rotate around the axis of the rotating shaft 233, thereby cutting the coal.

[0034] The rotating shaft 233 is also provided with a first bearing 2333, which is located between the first push block 234 and the second push block 236, thereby improving the smoothness of rotation between the first push block 234 and the second push block 236.

[0035] like Figure 3 As shown, the coal crusher 23 also includes a rotating block 238 fixedly mounted on the rotating shaft 233, and one end of the blade 2311 is hinged to the rotating block 238. By setting the rotating block 238, one end of the blade 2311 is hinged to the rotating block 238, and the rotating block 238 is fixedly mounted on the rotating shaft 233, which facilitates the installation of the blade 2311.

[0036] like Figure 3 As shown, the coal crusher 23 also includes a return spring 239, with its two ends connected to the blade 2311 and the rotating block 238, respectively. Using the aforementioned return spring 239, when at least two blades 2311 are in the extended state, the return spring 239 undergoes elastic deformation. Thus, when at least two blades 2311 return from the extended state to the retracted state, the elastic deformation force of the return spring 239 can reduce the driving force required for the blades 2311 to rotate relative to the rotating shaft 233.

[0037] like Figure 3 As shown, the side plate 212 and the bottom plate 211 are hinged together, and the pivot 233 is the second telescopic rod 2331. The side plate 212 is provided with a sliding groove 2121, and the extension direction of the sliding groove 2121 is perpendicular to the extension direction of the bottom plate 211. The two ends of the second telescopic rod 2331 extend into the sliding grooves 2121 of the two side plates 212 respectively. During the extension and retraction of the first telescopic rod 237, the second telescopic rod 2331 can move relative to the bottom plate 211 along the sliding groove 2121. When the rotating plate 21 is in an upright state, the second telescopic rod 2331 moves along the chute 2121 towards the bottom plate 211 relative to the bottom plate 211. The second telescopic rod 2331 retracts, and the side plate 212 rotates relative to the rotating plate 21, so that the two side plates 212 move closer together, preventing coal from getting stuck on the coal crushing piece 23 between the two side plates 212. When the rotating plate 21 is in a flat state, the second telescopic rod 2331 moves along the chute 2121 away from the bottom plate 211 relative to the bottom plate 211. The second telescopic rod 2331 extends, and the side plate 212 rotates relative to the rotating plate 21, so that the two side plates 212 move away from each other. The coal crushing piece 23 between the two side plates 212 is used to crush the coal on the rotating plate 21.

[0038] Furthermore, when the rotating plate 21 is in a flat position, the end of the side plate 212 away from the bottom plate 211 is in contact with the cavity wall of the coal mining chamber 11, thereby preventing coal from flowing from the gap between the rotating plate 21 and the cavity wall of the coal mining chamber 11 to the sampling port during sampling, and enabling more coal to be sampled at the same time.

[0039] Specifically, the second telescopic rod 2331 is a bidirectional telescopic rod, and the coal crushing drive component 232 includes a sliding block 2322 and a rotating motor 2321 mounted on the sliding block 2322. Both ends of the second telescopic rod 2331 are connected to the rotating motor 2321 through universal joints 2332. The sliding block 2322 extends into the slide groove 2121. During the extension and retraction of the first telescopic rod 237, the sliding block 2322 moves relative to the bottom plate 211 along the slide groove 2121.

[0040] like Figure 3As shown, in the extending direction of the vertical base plate 211, the base plate 211 includes a first plate segment 2111, a second plate segment 2112, and a third plate segment 2113 connected in sequence. The end of the first plate segment 2111 away from the second plate segment 2112 and the end of the third plate segment 2113 away from the second plate segment 2112 are both higher than the second plate segment 2112. With the base plate 211 having the above structure, when the rotating plate 21 is in a flat state, the coal on the rotating plate 21 is guided by the first plate segment 2111 and the third plate segment 2113, and the coal is collected onto the second plate segment 2112, concentrating the coal so that it can easily flow out from the sampling port.

[0041] like Figure 2 As shown, the sampling assembly 20 also includes a guide plate 24 disposed at the lower end of the rotating plate 21. When the rotating plate 21 is in a flat position, the guide plate 24 is located on the upper surface of the rotating plate 21 and perpendicular to the rotating plate 21. The guide plate 24 is located on one side of the sampling port 13, with one end extending to the sampling port 13 and the other end extending upward to above the baffle 22. When the rotating plate 21 is in a flat position, under the action of gravity, the coal on the rotating plate 21 flows downward along the rotating plate 21. A portion of the coal on the rotating plate 21 flows directly to the sampling port 13, while another portion flows to the guide plate 24 and, guided by the guide plate 24, indirectly flows to the sampling port 13, allowing all the coal on the rotating plate 21 to slide out of the coal hopper 10, thus completing the sampling. During coal sampling, the coal can flow smoothly to the sampling port 13, improving the reliability of the coal sampler.

[0042] like Figure 1 As shown, the coal hopper 10 includes a square hopper 14 and a first chute 15, a second chute 16, a first end plate 17, and a second end plate 18 located outside the square hopper 14. The feed inlet 12 and the discharge outlet are respectively located at both ends of the square hopper 14. The side wall of the square hopper 14 is provided with a first through hole and a second through hole. The first end of the first chute 15 is connected to the first through hole. The first end plate 17 is located at the second end of the first chute 15. The sampling port 13 is located on the first end plate 17. The first end of the second chute 16 is connected to the second through hole. The second end plate 18 is located at the second end of the second chute 16. The rotating plate 21 extends into the first chute 15 and the second chute 16 at both ends in its extension direction, respectively. The baffle 22 is located inside the first chute 15. The lumen of the first chute 15, the lumen of the second chute 16, and the inner cavity of the square bucket 14 are connected to form a coal mining chamber. The two ends of the side plate 212 extend to the inner wall of the square bucket 14, and the two ends of the bottom plate 211 in its extension direction extend into the first chute 15 and the second chute 16 respectively.

[0043] like Figure 1As shown, the coal sampling device also includes a frame 31, a third telescopic rod 32, and a swing rod 33. Both ends of the third telescopic rod 32 are hinged to one end of the frame 31 and one end of the swing rod 33, respectively. The other end of the swing rod 33 is driven to the upper end of the rotating plate 21. The swing rod 33 is driven to swing by the third telescopic rod 32, indirectly driving the rotating plate 21 to rotate and providing a power source for the rotating plate 21.

[0044] The third telescopic rod 32 is installed on the outside of the coal hopper 10, and a drive shaft 25 is installed on the rotating plate 21. The drive shaft 25 is installed on the second end plate 18 through the second bearing.

[0045] Specifically, the coal sampler also includes a control box. The first telescopic rod 237, the second telescopic rod 2331, and the third telescopic rod 32 are all electrically connected to the control box, and the telescopic movement of the first telescopic rod 237, the second telescopic rod 2331, and the third telescopic rod 32 is controlled by the control box.

[0046] When using the coal sampling device provided in this embodiment for sampling, the following operation methods are included:

[0047] (1) When it is not necessary to sample the coal, the third telescopic rod 32 works, causing the third telescopic rod 32 to drive the swing rod 33 to swing, and then the swing rod 33 drives the rotating plate 21 to rotate, so that the rotating plate 21 is in an upright state. At this time, the coal can pass smoothly through the coal mining chamber 11 from the space on both sides of the rotating plate 21 and be discharged through the discharge port.

[0048] (2) When it is necessary to sample the coal, the third telescopic rod 32 works, causing the third telescopic rod 32 to drive the swing rod 33 to swing, and then the swing rod 33 drives the rotating plate 21 to rotate, so that the rotating plate 21 is in a flat state, the baffle 22 avoids the sampling port 13, and under the action of gravity, the coal on the rotating plate 21 flows down along the rotating plate 21. A part of the coal on the rotating plate 21 flows directly to the sampling port 13, and another part of the coal on the rotating plate 21 flows to the guide plate 24, and under the guidance of the guide plate 24, it flows indirectly to the sampling port 13, so that all the coal on the rotating plate 21 slides out of the coal hopper 10, and the sampling is completed.

[0049] (3) When the coal block is large and requires coarse crushing, the second telescopic rod 2331 extends, and the side plate 212 rotates relative to the rotating plate 21, causing the two side plates 212 to move away from each other until the end of the side plate 212 away from the bottom plate 211 is in contact with the cavity wall of the coal mining chamber 11, preventing coal from leaking out from the gap between the rotating plate 21 and the cavity wall of the coal mining chamber 11. Then, the first telescopic rod 237 extends, and the first push block 234 moves along the axis of the rotating shaft 233 on the rotating shaft 233 and abuts against the second push block 236. The sliding block 2322 slides in the chute 2121. The second telescopic rod 2331 moves away from the bottom plate 211 relative to the bottom plate 211. The first push block 234 pushes the second push block 236 to move along the axis of the rotating shaft 233 on the rotating shaft 233. The second push block 236 pushes the blade through the push rod 235 to overcome the force of the return spring 239 relative to the rotating shaft. Rotation 233 causes at least two blades 2311 to be in the extended state. Finally, the rotating motor 2321 drives the rotating shaft 233 and the coal crushing knife 231 to rotate through the universal joint 2332 and crush the coal on the rotating plate 21 to prevent the coal volume from being too large to pass through the sampling port 13 and to prevent the sampling port 13 from being blocked. After sampling, the rotating motor 2321 is stopped first, and then the second telescopic rod 2331 is retracted. The side plate 212 rotates relative to the rotating plate 21, so that the two side plates 212 are perpendicular to the bottom plate 211. The first telescopic rod 237 retracts. Under the action of the elastic deformation force of the return spring 239, the blade 2311 rotates relative to the rotating shaft 233. The first push block 234 separates from the second push block 236 and gradually slides away from the second pusher. The rotating shaft 233 moves along the slide groove 2121 relative to the bottom plate 211 towards the bottom plate 211 under the action of gravity.

[0050] The coal sampling device provided in this embodiment has the following beneficial effects:

[0051] (1) When it is necessary to sample the transported coal, the rotating plate 21 is rotated to a flat position. The rotating plate 21 in the flat position is perpendicular to the rotating plate 21 in the upright position, so that some of the coal in the coal mining chamber 11 falls onto the rotating plate 21. Since the extension direction of the rotating plate 21 is set at an angle to the horizontal plane, the upper end of the rotating plate 21 extends to the side wall of the coal mining chamber 11, and the lower end of the rotating plate 21 extends to the sampling port 13. The coal on the rotating plate 21 flows along the rotating plate 21 to the sampling port 13 under the action of gravity, so as to sample the transported coal without interrupting the coal transportation of the first pipe section.

[0052] (2) When the rotating plate 21 is in a flat position, the coal on the rotating plate 21 is crushed by the coal crusher 23. The crushed coal flows along the rotating plate 21 to the sampling port 13 under the action of gravity, which avoids the coal volume being too large to pass through the sampling port 13, avoids the sampling port 13 being blocked, improves the reliability of the operation of the coal sampler, and avoids interrupting the transportation of coal to clean the sampling port.

[0053] (3) When the rotating plate 21 is in an upright state, at least two blades 2311 are in a retracted state to prevent coal from getting stuck between the blades 2311, thereby enabling the smooth transport of coal in the coal mining chamber 11.

[0054] (4) When the rotating plate 21 is in an upright state, the second telescopic rod 2331 moves along the slide groove 2121 relative to the bottom plate 211 towards the bottom plate 211. The second telescopic rod 2331 retracts, and the side plate 212 rotates relative to the rotating plate 21, so that the two side plates 212 are close together, avoiding coal from getting stuck on the coal break pieces 23 between the two side plates 212, so that the coal can be transported smoothly in the coal mining chamber 11.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0057] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A coal sampling device, characterized in that, The coal sampling device comprises: a coal sampling bucket (10) having a coal sampling cavity (11), an upper end of the coal sampling bucket (10) being provided with a feeding port (12) in communication with the coal sampling cavity (11), a lower end of the coal sampling bucket (10) being provided with a discharging port in communication with the coal sampling cavity (11), and a side wall of the coal sampling bucket (10) being provided with a sampling port (13) in communication with the coal sampling cavity (11); a sampling assembly (20) comprising a rotating plate (21) rotatably arranged in the coal sampling cavity (11) along a direction of extension of the rotating plate (21), the direction of extension of the rotating plate (21) being arranged at an angle with respect to a horizontal plane, a lower end of the rotating plate (21) extending to the sampling port (13), and an upper end of the rotating plate (21) extending to the side wall of the coal sampling cavity (11); wherein the rotating plate (21) has an upright state and a flat state, the lower end of the rotating plate (21) is provided with a baffle (22), the baffle (22) shields the sampling port (13) when the rotating plate (21) is in the upright state, and the baffle (22) avoids the sampling port (13) when the rotating plate (21) is in the flat state; the sampling assembly (20) further comprises a coal crushing member (23) capable of crushing coal, the coal crushing member (23) being arranged on the rotating plate (21), and the coal crushing member (23) being located on an upper surface of the rotating plate (21) when the rotating plate (21) is in the flat state; the coal crushing member (23) comprises a coal crushing cutter (231) and a coal crushing driving member (232), the coal crushing driving member (232) being drivingly connected with the coal crushing cutter (231) to drive the coal crushing cutter (231) to rotate; the coal crushing cutter (231) comprises at least two cutter blades (2311), the at least two cutter blades (2311) having a close storage state and a far-apart deployment state, and the coal crushing cutter (231) comprises at least two cutter blades (2311), the at least two cutter blades (2311) having a close storage state and a far-apart deployment state. The coal crushing element (23) further comprises a rotating shaft (233), a first push block (234), a push rod (235), a second push block (236) and a first telescopic rod (237), the rotating plate (21) comprises a bottom plate (211) and two side plates (212), when the rotating plate (21) is in the flat state, the two side plates (212) are respectively located on both sides of the bottom plate (211) in the vertical direction of the extension direction of the bottom plate (211), the lower ends of the two side plates (212) are connected with the bottom plate (211), the rotating shaft (233) is located above the bottom plate (211), the two ends of the rotating shaft (233) are respectively rotatably connected with the two side plates (212), the coal crushing driving element (232) is drivingly connected with the rotating shaft (233) to drive the rotating shaft (233) to rotate around its axis, the first push block (234) is arranged on the rotating shaft (233), the first push block (234) is movable relative to the rotating shaft (233) along the axis of the rotating shaft (233), and the first push block (234) and the rotating shaft (233) are rotationally matched, the two ends of the push rod (235) are respectively hingedly connected with the first push block (234) and the middle part of the blade (2311), one end of the blade (2311) is hingedly connected with the rotating shaft (233), the second push block (236) is arranged on the rotating shaft (233), the second push block (236) is movable relative to the rotating shaft (233) along the axis of the rotating shaft (233), and the second push block (236) is rotatable relative to the rotating shaft (233) around the axis of the rotating shaft (233), the two ends of the first telescopic rod (237) are respectively hingedly connected with the bottom plate (211) and the second push block (236), and the first telescopic rod (237) can drive the second push block (236) to move on the rotating shaft (233).

2. The coal sampling device according to claim 1, wherein The coal crushing element (23) further comprises a rotating block (238) fixedly arranged on the rotating shaft (233), and one end of the blade (2311) is hingedly connected with the rotating block (238); The coal crushing element (23) further comprises a reset spring (239), and the two ends of the reset spring (239) are respectively connected with the blade (2311) and the rotating block (238).

3. The coal sampling device according to claim 1, wherein The side plate (212) and the bottom plate (211) are hinged, the rotating shaft (233) is a second telescopic rod (2331), the side plate (212) is provided with a sliding groove (2121), the extending direction of the sliding groove (2121) is perpendicular to the extending direction of the bottom plate (211), the two ends of the second telescopic rod (2331) respectively extend into the sliding grooves (2121) of the two side plates (212), and the second telescopic rod (2331) can move relative to the bottom plate (211) along the sliding grooves (2121) in the process that the first telescopic rod (237) is telescopically extended or retracted; and / or, In the extending direction perpendicular to the bottom plate (211), the bottom plate (211) comprises a first plate segment (2111), a second plate segment (2112) and a third plate segment (2113) connected in sequence, and the end of the first plate segment (2111) away from the second plate segment (2112) and the end of the third plate segment (2113) away from the second plate segment (2112) are both higher than the second plate segment (2112).

4. A coal sampling machine according to any one of claims 1 to 3, wherein, The sampling assembly (20) further comprises a guide plate (24) arranged at the lower end of the rotating plate (21), when the rotating plate (21) is in the flat state, the guide plate (24) is located on the upper surface of the rotating plate (21) and is perpendicular to the rotating plate (21), the guide plate (24) is located on one side of the sampling port (13), one end of the guide plate (24) extends to the sampling port (13), and the other end of the guide plate (24) extends upwards above the baffle plate (22).

5. The coal sampling machine of any one of claims 1 to 3, wherein, The coal sampling hopper (10) comprises a square hopper (14), a first chute (15), a second chute (16), a first end plate (17) and a second end plate (18) located outside the square hopper (14), the feeding port (12) and the discharging port are arranged at the two ends of the square hopper (14) respectively, the first end plate (17) is arranged at the second end of the first chute (15), the sampling port (13) is arranged on the first end plate (17), the second end plate (18) is arranged at the second end of the second chute (16), and the two ends of the rotating plate (21) in the extending direction thereof extend into the first chute (15) and the second chute (16) respectively.

6. The coal sampling machine of any one of claims 1 to 3, wherein, The coal sampling device further comprises a frame body (31), a third telescopic rod (32) and a swing rod (33), the two ends of the third telescopic rod (32) are hinged to the frame body (31) and one end of the swing rod (33) respectively, and the other end of the swing rod (33) is drivingly connected to the upper end of the rotating plate (21).

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