A coal sample testing system

Abstract

This invention relates to coal sample testing technology, specifically addressing the problem of sedimentation and uneven mixing of coal samples during transport to the testing station. The invention provides a coal sample testing system. During sample transport, sample bottles are placed in a transport mechanism, which moves along the conveyor belt with the sample bottles. As the transport mechanism moves, its drive wheels rotate the sample bottles, ensuring continuous mixing and preventing sedimentation. This guarantees the accuracy of subsequent testing results. To ensure the slots at the bottom of the transport mechanism align with the conveyor belt's protrusions, the mechanism rotates on a positioning frame. This ensures the transport mechanism is only driven by the feeding belt after the slots are aligned with the protrusions, achieving automatic positioning and enabling unattended operation of the coal sample testing system.

Description

TECHNICAL FIELD

[0001] The present application relates to coal sample detection technology, in particular to a coal sample testing system. BACKGROUND

[0002] Coal as an energy source occupies an important position in the development of national economy, and ensuring fair and just coal quality control to avoid human interference has been a problem that the coal industry and its downstream metallurgy, electricity, building materials, chemical industry and other industries have focused on and urgently need to solve. Coal loading measurement and quality inspection as an important link of coal enterprise management and control, for a long time, there are low degree of automation, heavy labor intensity of workers, uneven loading, inaccurate measurement, low sampling and preparation level, great influence of human interference factors, inaccurate quality inspection and other problems. These problems are easy to cause coal sales business disputes, and seriously affect the enterprise image and social and economic benefits. The current coal quality inspection is mainly realized by sampling and testing method, and coal sample detection as an important means to measure the weight of coal still has problems such as human interference, test measurement error and slow sample detection speed in the detection process, so a coal testing system capable of effectively avoiding human interference and accurately completing various parameter test experiments is needed.

[0003] At present, most of the coal testing systems basically transport the coal samples to each detection instrument for detection through the conveying belt after the coal samples are sub-packed when conducting coal detection experiments. In this process, due to the large number of coal samples to be detected and the multiple detection steps, the samples will stay on the conveying belt for a long time. However, many parameter detections are detected using solutions, and since most of the components in coal are insoluble in water, the mixed solution will precipitate when it is at rest, causing differences in test records, which is not conducive to the accurate and efficient performance of the test, and reduces the use effect of the coal sample testing system.

[0004] In view of the above technical problems, a solution is proposed in the present application. SUMMARY

[0005] In the present application, the transportation mechanism and the coal sample bottle move together on the conveying belt. When the transportation mechanism moves on the conveying belt, the drive wheel on the transportation mechanism drives the internal coal sample bottle to rotate, so that the sample in the sample bottle is continuously mixed, avoiding the sample in the sample bottle from precipitating, ensuring the accuracy of the subsequent test results, and increasing the stability of the sample during transportation. The problem of easy precipitation and uneven mixing of coal samples when transported to the detection station is solved.

[0006] The purpose of the present application can be achieved by the following technical solutions:

[0007] A kind of coal sample's chemical test system, including coal sample detection line and coal sample detection equipment, wherein coal sample detection equipment includes coal sample supply, weighing, drying, ash detection, volatile matter detection, coulomb sulfur detection, heat value detection function, multiple detection functions are connected by coal sample conveying device, and are taken and placed by mechanical hand;

[0008] The coal sample conveying device includes the following working steps:

[0009] Step one: the mechanical hand takes the coal sample bottle loaded with coal sample after weighing and places in the transport mechanism at the end of the coal sample conveying device;

[0010] Step two: the conveyor belt is started, and the transport mechanism is moved on the conveyor belt, while the driving wheel in the transport mechanism drives the coal sample bottle in the transport mechanism to rotate constantly;

[0011] Step three: the coal sample bottle is transported to the corresponding detection mechanism, the mechanical hand on the detection mechanism is started, the coal sample bottle in the transport mechanism is taken out, and the operations such as uncapping, detection, waste collection and vessel cleaning are performed in sequence;

[0012] Step four: the empty transport mechanism continues to move to the end of the conveyor belt and slides onto the inclined discharge plate, the transport mechanism slides along the discharge plate to the upper surface of the return belt, the return belt is rotated under the drive of the conveyor belt, and the transport mechanism is returned to the other end of the conveyor belt;

[0013] Step five: after the transport mechanism moves to the end of the return belt, it enters the feeding plate and returns to the positioning frame along the feeding plate, adjusts the orientation under the action of the rotating wheel, and falls onto the feeding belt, the feeding belt is started, and the transport mechanism is returned to the conveyor belt to continue the next transportation.

[0014] As a preferred embodiment of the present application, the coal sample conveying device includes a base, the upper surface of the base is rotatably connected with a conveyor belt, the base is fixedly installed with baffles at positions on both ends of the upper surface of the conveyor belt, two groups of the baffles are fixedly installed with extrusion rods inside, the outer wall of the conveyor belt is fixedly connected with protrusions, two groups of the protrusions are symmetrically arranged on the outer wall of the conveyor belt, and the upper surface of the conveyor belt is clampedly connected with a transport mechanism.

[0015] The transport mechanism includes a transport seat, a drive wheel, a balance bar, a slot, a pulley, and a central shaft. The slot is formed on the ground of the transport seat, and the position of the slot corresponds to the position of the protrusion. The balance bar is fixedly connected to one side of the transport seat, and the direction of the balance bar is the same as the direction of the slot. Pulleys are rotatably connected to both ends of the balance bar. The drive wheel is movably connected to the other side of the transport seat through the central shaft. A slot for the drive wheel to rotate is formed on the same side of the transport seat. The pulley abuts against a pressing rod on one side, and the drive wheel abuts against a pressing rod on the other side. The drive wheel rolls on the pressing rod.

[0016] The conveyor belt is connected to a feeding plate, and the other end of the conveyor belt is connected to a feeding plate via a feeding belt.

[0017] In a preferred embodiment of the present invention, the feeding plate is inclined downwards, and a return belt is connected to the end of the feeding plate. The return belt is rotatably connected to the side wall of the base via a rotating roller. A transmission rod is rotatably connected inside the base. One end of the transmission rod is fixedly connected to a rotating wheel, and the other end of the transmission rod is connected to a rotating roller near the feeding plate. The outer wall of the rotating wheel abuts against the lower surface of the protrusion. A partition is provided on the outer side of the return belt. The end of the transmission rod away from the rotating roller passes through the rotating wheel and is rotatably connected to the upper surface of the base.

[0018] In a preferred embodiment of the present invention, the bottom end of the feeding plate is connected to the return conveyor belt, the top end of the feeding plate is connected to the feeding belt, a horizontal shaft is provided inside the feeding belt, the horizontal shaft is rotatably connected to one end of the base, a bracket is fixedly connected to one end of the base, a motor is fixedly connected to the top end of the bracket, a friction wheel is fixedly connected to the output end of the motor, a support frame is fixedly connected to the top end of the bracket, a support plate is fixedly connected to the top end of the support frame, a rotating rod passes through the center of the support plate, the rotating rod is rotatably connected to the center of the support plate, a bottom wheel is fixedly connected to the bottom end of the rotating rod, the outer wall of the bottom wheel abuts against the friction wheel, and a rotating wheel is fixedly connected to the top end of the rotating rod.

[0019] In a preferred embodiment of the present invention, a clamping plate is fixedly installed on the side of the transport seat opposite to the balance bar. The clamping plate is divided into upper and lower groups arranged opposite each other. A groove is opened inside the clamping plate. The central shaft is slidably connected inside the clamping plate. A spring is installed inside the groove of the clamping plate. One end of the spring is connected to the clamping plate and the other end is connected to the central shaft.

[0020] In a preferred embodiment of the present invention, vertical rods are fixedly connected to both sides of the support plate, and positioning frames are fixedly connected to the top of the vertical rods. The two sets of positioning frames and the protrusions are located on the same straight line.

[0021] In a preferred embodiment of the present invention, the upper surface of the rotating wheel is fixedly connected with multiple sets of anti-slip teeth, the upper surface of the rotating wheel is at the same height as the positioning frame, the rotating wheel is at the same height as the upper surface of the convex strip, and the upper surface of the rotating wheel is higher than the upper surface of the feeding belt.

[0022] In a preferred embodiment of the present invention, the portions of the feeding belt and the conveyor belt located on both sides of the protrusions correspond to each other, and the height of the upper surface of the feeding belt is higher than the height of the portion of the upper surface of the conveyor belt located outside the protrusions.

[0023] In a preferred embodiment of the present invention, the rotating rod is provided with a protrusion below the rotating wheel, and a movable plate is movably connected below the protrusion. A compression spring is connected below the movable plate, and the two ends of the compression spring are respectively connected to the movable plate and the support plate.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. In this invention, when transporting coal samples, the sample bottle is placed in a transport mechanism, so that the transport mechanism and the coal sample bottle move together on the conveyor belt. When the transport mechanism moves on the conveyor belt, the drive wheel on the transport mechanism drives the coal sample bottle inside to rotate, thereby continuously mixing the sample inside the sample bottle, avoiding precipitation of the sample inside the sample bottle, ensuring the accuracy of subsequent test results, and also increasing the stability of the sample during the transport process.

[0026] 2. In this invention, by utilizing the window below the conveyor belt, the transmission rod drives the return belt to rotate, thus sending the transport mechanism that has been transported to the end back. This avoids the need for a new drive mechanism, resulting in a simple structure and reduced energy consumption during long-term operation.

[0027] 3. In this invention, before the transport mechanism returns to the conveyor belt, in order to ensure that the slot at the bottom of the transport mechanism is aligned with the protrusion of the conveyor belt, the transport mechanism rotates on the positioning frame, so that the transport mechanism can only be driven by the feeding belt after the slot is aligned with the protrusion. This realizes the automatic positioning of the transport mechanism, ensures the stable operation of the transport mechanism, eliminates the need for manual operation, and realizes the unattended and fully automatic operation of the coal sample testing system. Attached Figure Description

[0028] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a top view of the present invention;

[0031] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0032] Figure 4 This is a schematic diagram of the transportation mechanism structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the clamping plate structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the rotating wheel structure of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B;

[0036] Figure 8 This is a schematic diagram of the bottom wheel structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the transmission rod structure of the present invention.

[0038] In the diagram: 1. Base; 2. Conveyor belt; 201. Raised bar; 3. Transport mechanism; 301. Transport seat; 302. Drive wheel; 303. Balance bar; 304. Slot; 305. Pulley; 306. Central shaft; 4. Baffle; 401. Extrusion rod; 5. Feeding plate; 6. Return belt; 7. Feeding plate; 8. Positioning frame; 9. Rotating wheel; 901. Anti-slip teeth; 902. Movable plate; 903. Compression spring; 904. Rotating rod; 905. Bottom wheel; 906. Support plate; 10. Feeding belt; 11. Bracket; 12. Clamping plate; 13. Spring; 14. Motor; 15. Transmission rod; 16. Rotating wheel; 17. Rotating roller; 18. Support frame; 19. Friction wheel. Detailed Implementation

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0040] Example 1:

[0041] Please see Figure 1 - Figure 2 As shown, a coal sample testing system includes a coal sample testing line and coal sample testing equipment. The coal sample testing equipment includes functions for coal sample supply, weighing, drying, ash content testing, volatile matter testing, coulombic sulfur testing, and calorific value testing. The various testing functions are connected through a coal sample transfer device and are handled by a robotic arm.

[0042] The coal sample conveying device includes the following operating steps:

[0043] Step 1: The robotic arm picks up the weighed coal sample bottle containing the coal sample and places it in the transport mechanism 3 at one end of the coal sample conveying device. The diameter of the sample bottle is smaller than the inner diameter of the transport seat 301. At the same time, the drive wheel 302 on the side of the transport seat 301 is squeezed by the spring 13 and pushed to the farthest end of the clamping plate 12 through the central shaft 306, so that the drive wheel 302 is on the outside of the transport seat 301.

[0044] Step 2: The conveyor belt 2 is started, driving the transport mechanism 3 to move on the conveyor belt 2. When the drive wheel 302 moves to contact the extrusion rod 401, the extrusion rod 401 will extrude the drive wheel 302, causing the drive wheel 302 to slide its central shaft 306 inside the clamping plate 12 and compress the spring 13 inside the clamping plate 12. After the drive wheel 302 compresses the spring 13, the edge of the drive wheel 302 enters the interior of the transport seat 301 along the groove on the side wall of the transport seat 301 and contacts the sample bottle whose inner diameter is smaller than that of the transport seat 301. At the same time, as the transport seat 301 continues to move forward, it will drive the drive wheel 302 to roll on the extrusion rod 401, so that the part of the drive wheel 302 located inside the transport seat 301 drives the sample bottle to rotate, preventing the coal sample inside the sample bottle from settling and settling.

[0045] Step 3: Before the coal sample bottle is transferred to the corresponding testing mechanism, the robotic arm on the testing mechanism is activated to take out the coal sample bottle from the transport mechanism 3. At the same time, the transport mechanism 3 remains on the conveyor belt 2 and performs operations such as opening the cap, testing, waste collection, and cleaning of the container in sequence.

[0046] Step 4: The unloaded transport mechanism 3 continues to move to the end of the conveyor belt 2 and slides onto the inclined unloading plate 5. The transport mechanism 3 slides along the unloading plate 5 to the upper surface of the return belt 6. The return belt 6 rotates under the drive of the conveyor belt 2. The rotary wheel 16 below the conveyor belt 2 rotates under the drive of the convex strip 201. The rotary wheel 16 rotates in the opposite direction to the conveyor belt 2. The rotary wheel 16 drives the rotating roller 17 near the unloading plate 7 to rotate through the transmission rod 15. When the rotating roller 17 rotates, it drives the return belt 6 to rotate. The return belt 6 rotates in the opposite direction to the conveyor belt 2, returning the transport mechanism 3 to the other end of the conveyor belt 2.

[0047] Step 5: After the transport mechanism 3 moves to one end of the return conveyor belt 6, it enters the loading plate 7 and returns to the positioning frame 8 along the loading plate 7. It is then supported by the positioning frame 8. At the same time, the bottom of the transport seat 301 contacts the rotating wheel 9. Under the action of the rotating wheel 9, the orientation is adjusted. When the transport seat 301 rotates to a certain angle, the slot 304 aligns with the positioning frame 8 and falls onto the loading belt 10. The loading belt 10 starts, driving the transport mechanism 3 back to the conveyor belt 2 to continue the next transport.

[0048] Example 2:

[0049] Please see Figure 1 - Figure 5 As shown, the coal sample transmission device includes a base 1, a conveyor belt 2 rotatably connected to the upper surface of the base 1, the conveyor belt 2 rotates under the drive of the motor 14, baffles 4 are fixedly installed at both ends of the conveyor belt 2 on the upper surface of the base 1, and squeezing rods 401 are fixedly installed on the inner side of both sets of baffles 4, and protrusions 201 are fixedly connected to the outer wall of the conveyor belt 2, the two sets of protrusions 201 are symmetrically arranged on the outer wall of the conveyor belt 2, and the protrusions 201 on the outer wall of the conveyor belt 2 also rotate together with the conveyor belt 2, and a transport mechanism 3 is engaged and connected to the upper surface of the conveyor belt 2, the protrusions 201 drive the transport seat 301 engaged with it to move together, and the transport seat 301 starts to move from one end of the conveyor belt 2;

[0050] The transport mechanism 3 includes a transport seat 301, a drive wheel 302, a balance bar 303, a slot 304, pulleys 305, and a central shaft 306. The slot 304 is formed on the ground of the transport seat 301, and its position corresponds to the position of the protrusion 201. The balance bar 303 is fixedly connected to one side of the transport seat 301, and the direction of the balance bar 303 is the same as that of the slot 304. Pulleys 305 are rotatably connected to both ends of the balance bar 303. When the outer wall of the transport seat 301 contacts the compression rod 401, the pulleys 305 on one side of the transport seat 301... 05 moves along the outer wall of the extrusion rod 401. The drive wheel 302 is movably connected to the other side of the transport seat 301 via the central shaft 306. When the drive wheel 302 on the other side of the transport seat 301 is in a relaxed state, it is located outside the transport seat 301. A slot for the drive wheel 302 to rotate is opened on the same side of the transport seat 301. A clamping plate 12 is fixedly installed on the side of the transport seat 301 opposite to the balance bar 303. The clamping plate 12 is divided into upper and lower groups arranged opposite each other. A groove is opened inside the clamping plate 12. The central shaft 306 is slidably connected inside the clamping plate 12. A spring 13 is installed inside the groove of plate 12. One end of spring 13 is connected to clamp plate 12, and the other end is connected to central shaft 306. Pulley 305 abuts against one side of pressing rod 401, and drive wheel 302 abuts against the other side of pressing rod 401. When drive wheel 302 moves to contact pressing rod 401, pressing rod 401 will squeeze drive wheel 302, causing drive wheel 302 to drive its central shaft 306 to slide inside clamp plate 12 and compress spring 13 inside clamp plate 12. After drive wheel 302 compresses spring 13, drive wheel 302 drives… The edge of the driving wheel 302 enters the interior of the transport seat 301 along the groove on the side wall of the transport seat 301 and contacts the sample bottle whose inner diameter is smaller than that of the transport seat 301. At the same time, as the transport seat 301 continues to move forward, it will drive the driving wheel 302 to roll on the extrusion rod 401, so that the part of the driving wheel 302 located inside the transport seat 301 drives the sample bottle to rotate, avoiding the coal sample inside the sample bottle from settling and settling, ensuring the accuracy of subsequent test results, and also increasing the stability of the sample during the transport process.

[0051] Example 3:

[0052] Please see Figure 9As shown, conveyor belt 2 is connected to a discharge plate 5, and the other end of conveyor belt 2 is connected to a feed plate 7 via a feed belt 10. After the transport mechanism 3 moves to the end of conveyor belt 2, it slides onto the upper surface of the discharge plate 5. Since the discharge plate 5 is inclined downwards, the transport mechanism 3 will slide down along the discharge plate 5 under the action of gravity. The end of the discharge plate 5 is connected to a return belt 6. The transport mechanism 3 flows to one end of the return belt 6. The return belt 6 is rotatably connected to the side wall of the base 1 via a rotating roller 17. A transmission rod 15 is rotatably connected inside the base 1. One end of the transmission rod 15 is fixedly connected to a rotary wheel 16. The outer wall of the rotary wheel 16 abuts against the lower surface of the protrusion 201. The rotary wheel 16 is located below the conveyor belt 2. Driven by the protrusion 201, the rotary wheel 16 rotates in the opposite direction to the conveyor belt 2. The other end of the transmission rod 15 is connected to the roller 17 on the side near the loading plate 7. The rotary wheel 16 drives the roller 17 on the side near the loading plate 7 to rotate through the transmission rod 15. When the roller 17 rotates, it drives the return belt 6 to rotate. The return belt 6 rotates in the opposite direction to the conveyor belt 2. The return belt 6 sends the upper transport mechanism 3 to the entrance of the loading plate 7. A partition is provided on the outside of the return belt 6 to prevent the transport mechanism 3 from falling. The end of the transmission rod 15 away from the roller 17 passes through the rotary wheel 16 and is rotatably connected to the upper surface of the base 1 to ensure the stability of the rotation of the transmission rod 15.

[0053] This invention utilizes the opening below the conveyor belt 2 and drives the return belt 6 to rotate via the transmission rod 15, thereby sending the transport mechanism 3 back to its end. This avoids the need for a new drive mechanism, resulting in a simple structure and reduced energy consumption during long-term operation.

[0054] Example 4:

[0055] Please see Figure 6 - Figure 8As shown, the other end of the conveyor belt 2 is connected to the feeding plate 7 via the feeding belt 10. The bottom end of the feeding plate 7 is connected to the return conveyor belt 6. After the transport mechanism 3 moves to the inlet of the feeding plate 7, a small conveyor belt is also provided on the feeding plate 7, which drives the transport mechanism 3 to move up the feeding plate 7 to the top of the feeding plate 7. After the transport mechanism 3 moves to the top of the feeding plate 7, it is sent out from the feeding plate 7. The top of the feeding plate 7 is connected to the feeding belt 10. A horizontal shaft is provided inside the feeding belt 10. The horizontal shaft is rotatably connected to one end of the base 1. A bracket 11 is also fixedly connected to one end of the base 1. A motor 14 is fixedly connected to the top of the bracket 11. A friction wheel 19 is fixedly connected to the output end of the motor 14. The motor 14 drives the friction wheel 19 to rotate. A support frame 18 is also fixedly connected to the top of the bracket 11. A support plate 906 is fixedly connected to the top of the 18. A rotating rod 904 passes through the center of the support plate 906 and is rotatably connected to the center of the support plate 906. A bottom wheel 905 is fixedly connected to the bottom end of the rotating rod 904. The outer wall of the bottom wheel 905 abuts against the friction wheel 19. The friction wheel 19 drives the bottom wheel 905 to rotate, and the bottom wheel 905 drives the rotating rod 904 to rotate. A rotating wheel 9 is fixedly connected to the top of the rotating rod 904, and the rotating rod 904 drives the rotating wheel 9 to rotate. Vertical rods are fixedly connected to both sides of the support plate 906. A positioning frame 8 is fixedly connected to the top of the vertical rod. The two sets of positioning frames 8 are on the same straight line as the protrusion 201. Multiple sets of anti-slip teeth 901 are fixedly connected to the upper surface of the rotating wheel 9. The upper surface of the rotating wheel 9 is at the same height as the positioning frame 8. After being fed from the loading plate 7, component 3 is supported by the positioning frame 8. Simultaneously, the bottom of the transport seat 301 contacts the rotating wheel 9. The rotating wheel 9 drives the transport seat 301 to rotate via the upper anti-slip teeth 901. As the transport seat 301 rotates, the lower slot 304 also rotates with it. When the transport seat 301 rotates to a certain angle, the slot 304 aligns with the positioning frame 8, causing the positioning frame 8 to enter the slot 304. The transport seat 301 then falls. After falling, the bottom surface of the transport seat 301 contacts the loading belt 10. The loading belt 10 rotates under the drive of the motor, moving the transport seat 301 forward until it returns to the conveyor belt 2 to continue participating in the next sample bottle transport. The rotating wheel 9 and the raised strip 201 are shown on the surface... The surfaces are at the same height, ensuring that when the transport mechanism 3 is on the upper surface of the positioning frame 8, the rotating wheel 9 can contact the lower surface of the transport mechanism 3. The upper surface of the rotating wheel 9 is higher than the upper surface of the feeding belt 10, so that the transport mechanism 3 will not be driven by the feeding belt 10 when it is above the positioning frame 8. When the transport mechanism 3 falls from the positioning frame 8, the bottom of the transport mechanism 3 can contact the top of the feeding belt 10. The feeding belt 10 and the portion of the conveyor belt 2 located on both sides of the protrusion 201 correspond to each other. The height of the upper surface of the feeding belt 10 is higher than the height of the portion of the upper surface of the conveyor belt 2 located outside the protrusion 201, which facilitates the transport mechanism 3 to move from above the feeding belt 10 onto the conveyor belt 2. The rotating rod 904 is provided with a protrusion below the rotating wheel 9, and a movable plate 902 is movably connected below the protrusion.A compression spring 903 is connected below the movable plate 902. Both ends of the compression spring 903 are connected to the movable plate 902 and the support plate 906, respectively. After the slot 304 at the bottom of the transport mechanism 3 aligns with the positioning frame 8 and falls, the transport mechanism 3 compresses the rotating wheel 9 downwards. The rotating wheel 9 drives the protrusion to press against the movable plate 902, which in turn compresses the compression spring 903. This causes the rotating wheel 9 to drive the rotating rod 904 to descend, which in turn drives the bottom wheel 905 to descend. The bottom wheel 905 falls below the friction wheel 19, losing connection with it. The rotating wheel 9 then stops rotating, facilitating the movement of the transport mechanism 3 by the feeding belt 10. This achieves automatic positioning of the transport mechanism 3, ensuring its stable operation without manual intervention. This realizes unattended, fully automated operation of the coal sample testing system.

[0056] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A testing system for coal samples, characterized in that, It includes a coal sample testing line and coal sample testing equipment. The coal sample testing equipment includes functions such as coal sample supply, weighing, drying, ash content testing, volatile matter testing, coulombic sulfur testing, and calorific value testing. The various testing functions are connected through a coal sample transfer device and are handled by a robotic arm. The coal sample conveying device includes a base (1), a conveyor belt (2) is rotatably connected to the upper surface of the base (1), baffles (4) are fixedly installed at both ends of the conveyor belt (2) on the upper surface of the base (1), and squeezing rods (401) are fixedly installed on the inner side of both sets of baffles (4). A protrusion (201) is fixedly connected to the outer wall of the conveyor belt (2), and the two sets of protrusions (201) are symmetrically arranged on the outer wall of the conveyor belt (2). A transport mechanism (3) is engaged and connected to the upper surface of the conveyor belt (2). The transport mechanism (3) includes a transport seat (301), a drive wheel (302), a balance bar (303), a slot (304), a pulley (305), and a central shaft (306). The slot (304) is located on the bottom surface of the transport seat (301), and its position corresponds to the position of the protrusion (201). The balance bar (303) is fixedly connected to one side of the transport seat (301), and its orientation is the same as that of the slot (304). The balance bar (303) is rotatably connected to pulleys (305) at both ends. The drive wheel (302) is movably connected to the other side of the transport seat (301) via the central shaft (306). The transport seat (301) has a slot on the same side for the drive wheel (302) to rotate. The pulley (305) abuts against the pressing rod (401) on one side, and the drive wheel (302) abuts against the pressing rod (401) on the other side. The drive wheel (302) rolls on the pressing rod (401). The conveyor belt (2) is connected to the unloading plate (5), and the other end of the conveyor belt (2) is connected to the loading plate (7) via the loading belt (10). The bottom end of the feeding plate (7) is connected to the return belt (6), and the top end of the feeding plate (7) is connected to the feeding belt (10). The feeding belt (10) has a horizontal shaft inside, which is rotatably connected to one end of the base (1). One end of the base (1) is also fixedly connected to a bracket (11). The top end of the bracket (11) is fixedly connected to a motor (14). The output end of the motor (14) is fixedly connected to a friction wheel (19). The top end of the bracket (11) is also fixedly connected to a support frame (18). The top end of the support frame (18) is fixedly connected to a support plate (906). A rotating rod (904) passes through the center of the support plate (906). The rotating rod (904) is rotatably connected to the center of the support plate (906). The bottom end of the rotating rod (904) is fixedly connected to a bottom wheel (905). The outer wall of the bottom wheel (905) abuts against the friction wheel (19). The top end of the rotating rod (904) is fixedly connected to a rotating wheel (9).

2. The coal sample testing system according to claim 1, characterized in that, The feeding plate (5) is inclined downwards. The end of the feeding plate (5) is connected to a return belt (6). The return belt (6) is rotatably connected to the side wall of the base (1) via a rotating roller (17). A transmission rod (15) is rotatably connected inside the base (1). One end of the transmission rod (15) is fixedly connected to a rotating wheel (16). The other end of the transmission rod (15) is connected to the rotating roller (17) near the feeding plate (7). The outer wall of the rotating wheel (16) abuts against the lower surface of the protrusion (201). A partition is provided on the outside of the return belt (6). The end of the transmission rod (15) away from the rotating roller (17) passes through the rotating wheel (16) and is rotatably connected to the upper surface of the base (1).

3. The coal sample testing system according to claim 1, characterized in that, A clamping plate (12) is fixedly installed on the side of the transport seat (301) opposite to the balance bar (303). The clamping plate (12) is divided into two groups of opposite arrangement. A groove is opened inside the clamping plate (12). The central shaft (306) is slidably connected inside the clamping plate (12). A spring (13) is installed inside the groove of the clamping plate (12). One end of the spring (13) is connected to the clamping plate (12), and the other end is connected to the central shaft (306).

4. The coal sample testing system according to claim 1, characterized in that, The support plate (906) is fixedly connected to vertical rods on both sides, and a positioning frame (8) is fixedly connected to the top of the vertical rod. The two sets of positioning frames (8) and the protrusion (201) are located on the same straight line.

5. The coal sample testing system according to claim 4, characterized in that, The upper surface of the rotating wheel (9) is fixedly connected with multiple sets of anti-slip teeth (901). The upper surface of the rotating wheel (9) is at the same height as the positioning frame (8). The upper surface of the rotating wheel (9) is at the same height as the upper surface of the convex strip (201). The upper surface of the rotating wheel (9) is higher than the upper surface of the feeding belt (10).

6. The coal sample testing system according to claim 1, characterized in that, The feeding belt (10) corresponds to the portion of the conveyor belt (2) located on both sides of the protrusion (201), and the height of the upper surface of the feeding belt (10) is higher than the height of the portion of the upper surface of the conveyor belt (2) located outside the protrusion (201).

7. The coal sample testing system according to claim 1, characterized in that, The rotating rod (904) has a protrusion below the rotating wheel (9), and a movable plate (902) is movably connected below the protrusion. A compression spring (903) is connected below the movable plate (902), and the two ends of the compression spring (903) are connected to the movable plate (902) and the support plate (906) respectively.

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