Automatic sampling device for coal yard

Abstract

The invention belongs to the technical field of coal sample collection, and discloses a coal yard automatic sampling device which comprises a sampling device body, the sampling device body comprises a machine body, a linear module is installed above the machine body through a bolt, a positioning device is arranged above the linear module, and the positioning device comprises a connecting block; a sampling device is arranged at the front end of the connecting block, and a table body and a collecting device which are located on the two sides of the linear module are welded to the upper portion of the machine body. Sampling point positions are randomly generated through an algorithm, accurate positioning is achieved through a lead screw and a camera of the positioning device, and it is ensured that the sampling points cover different positions of a coal stack; in addition, the spiral conveying shaft can randomly adjust the sampling depth within a range of one meter, so that only surface coal samples are collected, and the coal quality distribution is comprehensively reflected; a closed transmission system prevents samples from being polluted or spilled, and ensures that detection data is accurate and reliable; and the objectivity of quality evaluation and the transaction fairness are obviously improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal sample collection, and in particular relates to an automatic sampling device for a coal yard. Background Art

[0002] Coal sampling is the "quality eye" of the entire coal chain from mining to utilization, which directly affects the economy, environmental protection, safety and resource management. By collecting representative coal samples, key indicators such as coal ash, volatile matter, fixed carbon, sulfur content, moisture, etc. can be measured, which directly affects its combustion efficiency, environmental protection and applicable process.

[0003] Currently, coal sampling at coal yards relies primarily on manual labor, requiring workers to climb coal piles and manually load them. This is labor-intensive and poses safety risks. During the sampling process, sampling locations and depths are entirely subjective, lacking a unified standard. Manual sampling is susceptible to interference from factors such as the coal pile's surface morphology and personnel movement, making it difficult to cover different depths and areas of the coal pile. The bottom or edges of the coal pile are particularly overlooked, and the samples fail to truly reflect the overall coal quality. Furthermore, the randomness of sampling points can lead to fluctuations in key indicators (such as sulfur content and calorific value). Different personnel sampling the same batch of coal can produce significantly different results, impacting quality assessment and trading fairness. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic sampling device for a coal yard to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic sampling device for a coal yard, comprising a sampling device, the sampling device comprising a body, a linear module being installed with bolts on the upper part of the body, a positioning device being provided above the linear module, the positioning device comprising a connecting block, a sampling device being provided at the front end of the connecting block, a platform and a collecting device being welded above the body and located on both sides of the linear module, a feed port being provided above the collecting device, a material taking port being provided on the right side of the collecting device, two driving wheels being rotatably installed on both sides of the body, the two driving wheels being connected by a crawler transmission, an outer plate being installed with bolts on the outer side of the driving wheel, the outer plate being located on the outer side of the crawler, long grooves being provided on both sides of the body, a tensioning device being provided inside the long groove, and a camera being bolted on the upper part of the platform.

[0006] Preferably, the tensioning device includes a cylindrical block boltedly installed inside the long slot, a circular groove is opened inside the cylindrical block, a transmission plate is slidably installed inside the circular groove, a connecting shaft is welded at the front end of the transmission plate, the front end of the connecting shaft extends to the front side of the cylindrical block, the inner side of the driving wheel is bolted and slidably connected to the connecting bearing inside the long slot, a fixing ring is welded at the front end of the connecting shaft, and the fixing ring is movably sleeved on the outer side of the connecting bearing, and a telescopic spring is elastically installed between the inner side of the transmission plate and the inner side of the circular groove.

[0007] Preferably, the positioning device includes a mounting plate arranged above the outer plate, a vertical plate is bolted onto the top of the mounting plate, a front plate and a bottom plate are welded to the two ends of the right side of the vertical plate respectively, a screw rod is rotatably installed between the lower side of the front plate and the upper side of the bottom plate, and the connecting block is threadedly sleeved on the outside of the screw rod.

[0008] Preferably, a servo motor 1 is bolted onto the upper portion of the front plate, and an output shaft of the servo motor 1 is bolted onto the upper portion of the lead screw.

[0009] Preferably, a vertical groove is opened on the surface of the vertical plate, a circular shaft is welded to the left side of the connecting block, a roller is rotatably mounted on the outer side of the circular shaft, and the outer side of the roller is in contact with the inner side of the vertical groove.

[0010] Preferably, a limit plate is installed on the left end bolt of the circular shaft, and the limit plate is located on the left side of the roller.

[0011] Preferably, the sampling device includes a square plate bolted to the front end of the connecting block, a cylinder bolted to the bottom of the square plate, a spiral conveying shaft inside the cylinder rotatably mounted to the bottom of the square plate, and an opening is provided at the front side of the top end of the cylinder.

[0012] Preferably, the top end of the square plate is bolted with a servo motor 2, and the output shaft of the servo motor 2 is bolted to the top end of the spiral conveying shaft.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention randomly generates sampling points through an algorithm and uses the screw rod and camera of the positioning device to achieve precise positioning, ensuring that the sampling points cover different positions of the coal pile. In addition, the spiral conveyor shaft can randomly adjust the sampling depth within the range of .-meter to avoid collecting only surface coal samples, thereby fully reflecting the coal quality distribution. The closed transmission system prevents sample contamination or spillage, ensuring the accuracy and reliability of test data, significantly improving the objectivity of quality assessment and transaction fairness.

[0014] 3. This invention utilizes a crawler-tracked mechanism for fully automated movement, eliminating the need for manual intervention. A servo-motor-driven mechanical sampling eliminates manual loading, reducing operator fatigue. A tensioning device automatically adjusts the track tension, ensuring stability on steep slopes or soft areas of the coal pile, preventing tipping. Furthermore, the enclosed design effectively suppresses dust dispersion, reducing occupational health hazards. It also completely eliminates the safety risks associated with traditional sampling, aligning with the development of modern industrial intelligence and safety standards.

[0015] 3. The sampling points and depths of the present invention are randomly generated by the system and cannot be interfered with by humans; the camera and sensor record the sampling process in real time, and the data is encrypted and stored in the cloud to prevent tampering; the packaged sample automatically generates a unique QR code label containing time, coordinates and other information to achieve full traceability; in addition, the standardized process eliminates differences in human operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the sampling device of the present invention; Figure 3 Schematic diagram of the transverse section of the tensioning device of the present invention; Figure 4 This is a schematic diagram of the positioning device of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the positioning device of the present invention; Figure 6 Schematic diagram of the sampling device of the present invention.

[0017] In the figure: 1. Sampling device; 11. Machine body; 12. Platform; 13. Collecting device; 14. Feed port; 15. Feed port; 16. Driving wheel; 17. Track; 18. Outer plate; 19. Linear module; 2. Positioning device; 201. Mounting plate; 202. Vertical plate; 203. Vertical slot; 204. Front plate; 205. Servo motor 1; 206. Bottom plate; 207. Screw; 208. Connecting block; 209. Circular shaft; 210. Roller; 211. Limiting plate; 3. Sampling device; 31. Square plate; 32. Servo motor 2; 33. Cylinder; 34. Screw conveyor shaft; 35. Opening; 4. Camera; 5. Tensioning device; 51. Cylindrical block; 52. Circular slot; 53. Transmission plate; 54. Telescopic spring; 55. Connecting shaft; 56. Fixing ring; 57. Connecting bearing; 6. Long slot. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figures 1 to 6 As shown, an embodiment of the present invention provides an automatic sampling device for a coal yard, including a sampling device 1, which includes a body 11. A linear module 19 is bolted onto the top of the body 11, and a positioning device 2 is provided above the linear module 19. The positioning device 2 includes a connecting block 208, and a sampling device 3 is provided at the front end of the connecting block 208. A platform 12 and a collecting device 13 located on both sides of the linear module 19 are welded onto the top of the body 11. A feed port 14 is provided above the collecting device 13, and a material removal port 15 is provided on the right side of the collecting device 13. Two driving wheels 16 are rotatably installed on both sides of the body 11, and the two driving wheels 16 are connected by a crawler 17 for transmission. An outer plate 18 is bolted onto the outer side of the driving wheel 16, and the outer plate 18 is located on the outer side of the crawler 17. Long grooves 6 are provided on both sides of the body 11, and a tensioning device 5 is provided inside the long groove 6. A camera 4 is bolted onto the top of the platform 12.

[0020] The device moves on the coal pile via crawler drive wheels 16 and crawler tracks 17, with the camera 4 and positioning device 2 working in conjunction. The camera scans the surface of the coal pile to generate a three-dimensional model, and the servo motor 205 of the positioning device drives the screw 207 to rotate, driving the connecting block 208 to move up and down, achieving precise positioning of the sampling point. After reaching the target point, the sampling device 3 is started: the servo motor 2 32 drives the screw conveyor shaft 34 to rotate, drilling into the coal pile through the opening at the bottom of the cylinder 33; the sampling depth is controlled by the screw 207 and can be randomly adjusted within the range of 0.2-2 meters to ensure that coal samples from different layers are covered; The collected coal sample is lifted to the top of the feed port 14 by the spiral conveyor shaft 34 and falls into the collecting device 13; when the coal sample reaches the preset capacity, the material taking port 15 is automatically opened, the full bag is sealed and the empty bag is replaced, and no manual intervention is required throughout the process; wherein, the collecting device belongs to the existing technology, and the collecting bag has a built-in weight sensor or volume detection device to monitor the coal sample inventory in real time; when the preset capacity is reached, the robotic arm automatically seals the bag opening, heat seals or locks it with a cable tie, and prints a label containing information such as sampling time and point number; the empty bag automatically replaces the full collection bag through a magazine-type storage mechanism, and no manual intervention is required throughout the process.

[0021] The tensioning device 5 adjusts the position of the transmission plate 53 through the telescopic spring 54 to maintain the tension of the crawler track 17, adapt to the rugged terrain of the coal pile, and prevent slipping or derailment.

[0022] Traditional manual sampling is limited by the subjective choice of operators, and it is easy to ignore key areas such as the edge and bottom of the coal pile, resulting in insufficient sample representativeness; the automatic sampling device of the present invention randomly generates sampling points through an algorithm, and uses the screw 207 of the positioning device 2 and the camera 4 to achieve precise positioning, ensuring that the sampling points cover different positions of the coal pile; in addition, the spiral conveyor shaft 34 can randomly adjust the sampling depth within the range of 0.2-2 meters to avoid collecting only surface coal samples, thereby fully reflecting the coal quality distribution; the closed transmission system prevents sample contamination or spillage, ensuring that the test data is accurate and reliable; significantly improving the objectivity of quality assessment and transaction fairness.

[0023] like Figures 1 to 3 As shown, the tensioning device 5 includes a cylindrical block 51 boltedly installed inside the long slot 6, a circular groove 52 is opened inside the cylindrical block 51, a transmission plate 53 is slidably installed inside the circular groove 52, a connecting shaft 55 is welded to the front end of the transmission plate 53, the front end of the connecting shaft 55 extends to the front side of the cylindrical block 51, the inner side of the driving wheel 16 is bolted and slidably connected to the connecting bearing 57 inside the long slot 6, a fixing ring 56 is welded to the front end of the connecting shaft 55, and the fixing ring 56 is movably sleeved on the outer side of the connecting bearing 57, and a telescopic spring 54 is elastically installed between the inner side of the transmission plate 53 and the inner side of the circular groove 52.

[0024] Manual sampling requires workers to climb coal piles, which is labor-intensive and poses safety risks such as collapse and dust inhalation. This invention uses a crawler-tracked mechanism to achieve fully automated movement, eliminating the need for human intervention. A servo-motor-driven mechanical sampling eliminates manual loading, reducing operator fatigue. A tensioning device 5 automatically adjusts the track tension to ensure stability on steep slopes or soft areas of the coal pile, preventing the risk of tipping over. Furthermore, the enclosed design effectively suppresses dust dispersion, reducing occupational health hazards and completely avoiding the safety risks associated with traditional sampling, conforming to the development trend of modern industrial intelligence and safety standards.

[0025] like Figures 1 to 5 As shown, the positioning device 2 includes a mounting plate 201 arranged above the outer plate 18, a vertical plate 202 is bolted to the top of the mounting plate 201, a front plate 204 and a bottom plate 206 are welded to the two ends of the right side of the vertical plate 202, a screw rod 207 is rotatably installed between the lower side of the front plate 204 and the upper side of the bottom plate 206, and a connecting block 208 is threadedly sleeved on the outer side of the screw rod 207.

[0026] Manual sampling is prone to selectively collect high-quality coal samples due to profit, thus concealing the true quality; the present invention uses sampling points and depths that are randomly generated by the system and cannot be intervened by humans; the camera 4 and the sensor record the sampling process in real time, and the data is encrypted and stored in the cloud to prevent tampering; the packaged sample automatically generates a unique QR code label containing time, coordinates and other information to achieve full traceability; in addition, the standardized process eliminates differences in human operations.

[0027] like Figures 1 to 5 As shown, a servo motor 205 is bolted onto the top of the front plate 204 , and the output shaft of the servo motor 205 is bolted onto the top of the screw rod 207 .

[0028] The servo motor 205 is started, so that the servo motor 205 drives the screw rod 207 to rotate, thereby driving the connecting block 208 to move up and down to collect the coal sample.

[0029] like Figures 1 to 5 As shown, a vertical groove 203 is opened on the surface of the vertical plate 202, a circular shaft 209 is welded to the left side of the connecting block 208, and a roller 210 is rotatably installed on the outer side of the circular shaft 209, and the outer side of the roller 210 is in contact with the inner side of the vertical groove 203.

[0030] The connecting block 208 moves up and down, driving the roller 210 to roll inside the vertical slot 203 , thereby limiting the connecting block 208 through the vertical slot 203 .

[0031] like Figures 1 to 5 As shown, the left end of the circular shaft 209 is bolted with a limit plate 211 , and the limit plate 211 is located on the left side of the roller 210 .

[0032] The roller 210 is limited by the limiting plate 211 to prevent the roller 210 from being separated from the circular shaft 209 and thus making it impossible to limit the connection block 208 .

[0033] like Figures 1 to 6 As shown, the sampling device 3 includes a square plate 31 bolted to the front end of the connecting block 208, a cylinder 33 is bolted to the bottom of the square plate 31, a screw conveying shaft 34 located inside the cylinder 33 is rotatably mounted to the bottom of the square plate 31, and an opening 35 is provided on the front side of the top end of the cylinder 33; a servo motor 2 32 is bolted to the top end of the square plate 31, and the output shaft of the servo motor 2 32 is bolted to the top end of the screw conveying shaft 34.

[0034] By inserting the cylinder 33 into the coal, starting the servo motor 32 , and causing the servo motor 32 to drive the screw conveying shaft 34 to rotate, the coal is transported to the inside of the cylinder 33 .

[0035] Working principle and usage process: The device moves on the coal pile via crawler drive wheels 16 and crawler tracks 17, with the camera 4 and positioning device 2 working in conjunction. The camera scans the surface of the coal pile to generate a three-dimensional model, and the servo motor 205 of the positioning device drives the screw 207 to rotate, driving the connecting block 208 to move up and down, achieving precise positioning of the sampling point. After reaching the target point, the sampling device 3 is started: the servo motor 2 32 drives the screw conveyor shaft 34 to rotate, drilling into the coal pile through the opening at the bottom of the cylinder 33; the sampling depth is controlled by the screw 207 and can be randomly adjusted within the range of 0.2-2 meters to ensure that coal samples from different layers are covered; The collected coal sample is lifted to the top of the feed port 14 by the spiral conveyor shaft 34 and falls into the collecting device 13; when the coal sample reaches the preset capacity, the material taking port 15 is automatically opened, the full bag is sealed and the empty bag is replaced, and no manual intervention is required throughout the process; wherein, the collecting device belongs to the existing technology, and the collecting bag has a built-in weight sensor or volume detection device to monitor the coal sample inventory in real time; when the preset capacity is reached, the robotic arm automatically seals the bag opening, heat seals or locks it with a cable tie, and prints a label containing information such as sampling time and point number; the empty bag automatically replaces the full collection bag through a magazine-type storage mechanism, and no manual intervention is required throughout the process.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling device for a coal yard, comprising a sampling device (1), characterized in that: The sampling device (1) includes an organic body (11), a linear module (19) is bolted on the upper part of the organic body (11), a positioning device (2) is provided on the upper part of the linear module (19), the positioning device (2) includes a connecting block (208), a sampling device (3) is provided at the front end of the connecting block (208), a platform (12) and a collecting device (13) located on both sides of the linear module (19) are welded on the upper part of the organic body (11), a feed port (14) is provided on the upper part of the collecting device (13), and the A material taking port (15) is provided on the right side of the collecting device (13), two driving wheels (16) are rotatably installed on both sides of the machine body (11), and the two driving wheels (16) are connected to each other through a crawler belt (17). An outer plate (18) is installed on the outer side of the driving wheel (16) by bolts, and the outer plate (18) is located on the outer side of the crawler belt (17). Long grooves (6) are provided on both sides of the machine body (11), and a tensioning device (5) is provided inside the long groove (6). A camera (4) is installed on the upper bolt of the platform (12).

2. The automatic sampling device for coal yard according to claim 1, characterized in that: The tensioning device (5) includes a cylindrical block (51) boltedly mounted inside the long slot (6), a circular slot (52) is provided inside the cylindrical block (51), a transmission plate (53) is slidably mounted inside the circular slot (52), a connecting shaft (55) is welded to the front end of the transmission plate (53), the front end of the connecting shaft (55) extends to the front side of the cylindrical block (51), the inner side of the driving wheel (16) is boltedly mounted and slidably connected to a connecting bearing (57) inside the long slot (6), a fixing ring (56) is welded to the front end of the connecting shaft (55), and the fixing ring (56) is movably sleeved on the outer side of the connecting bearing (57), and a telescopic spring (54) is elastically mounted between the inner side of the transmission plate (53) and the inner side of the circular slot (52).

3. The automatic sampling device for coal yard according to claim 1, characterized in that: The positioning device (2) includes a mounting plate (201) arranged above the outer plate (18), a vertical plate (202) is bolted to the top of the mounting plate (201), a front plate (204) and a bottom plate (206) are welded to the two ends of the right side of the vertical plate (202), a screw rod (207) is rotatably mounted between the lower side of the front plate (204) and the upper side of the bottom plate (206), and the connecting block (208) is threadedly sleeved on the outer side of the screw rod (207).

4. The automatic sampling device for coal yard according to claim 3, characterized in that: A servo motor 1 (205) is bolted onto the upper portion of the front plate (204), and an output shaft of the servo motor 1 (205) is bolted onto the upper portion of the screw rod (207).

5. The automatic sampling device for coal yard according to claim 3, characterized in that: A vertical groove (203) is provided on the surface of the vertical plate (202), a circular shaft (209) is welded to the left side of the connecting block (208), a roller (210) is rotatably mounted on the outer side of the circular shaft (209), and the outer side of the roller (210) is in contact with the inner side of the vertical groove (203).

6. The automatic sampling device for coal yard according to claim 5, characterized in that: The left end bolt of the circular shaft (209) is mounted with a limit plate (211), and the limit plate (211) is located on the left side of the roller (210).

7. The automatic sampling device for coal yard according to claim 1, characterized in that: The sampling device (3) includes a square plate (31) bolted to the front end of the connecting block (208), a cylinder (33) bolted to the bottom of the square plate (31), a spiral conveying shaft (34) rotatably mounted inside the cylinder (33) to the bottom of the square plate (31), and an opening (35) is provided at the front side of the top end of the cylinder (33).

8. The automatic sampling device for coal yard according to claim 7, characterized in that: The top end of the square plate (31) is bolted with a servo motor 2 (32), and the output shaft of the servo motor 2 (32) is bolted to the top end of the spiral conveying shaft (34).

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