A plastometer and its measuring method

Abstract

The present invention is applicable to the technical field of determination of the plastometer index, and provides a plastometer index measuring instrument and a measuring method thereof, including a workbench, a cover body installed on the top of the workbench, and a control box installed on one side of the cover body. An adjusting component is installed inside the workbench, and the adjusting component includes two groups of furnace bricks. A pressing component is installed inside the workbench, and the pressing component includes four oil cylinders. This device solves the problem that the thin steel rod is prone to tilt when manually rotated and pulled out during the determination of the plastometer index, interfering with the coal sample structure and affecting the measurement accuracy and accuracy. This device is provided with a grasping component, which uses a telescopic rod to smoothly lower the clamping mechanism to clamp the thin steel rod, and pulls out the thin steel rod when moving upward. At the same time, the clamping plate and the limiting strip limit the paper tube to avoid manual shaking. When clamping and pulling out, the second motor drives the gear and the clamping mechanism to rotate the thin steel rod synchronously, alleviating the situation that the paper tube follows and rises to interfere with the coal sample structure, and ensuring the stability of the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of determination of the plastometer index, and more specifically, it relates to a plastometer index measuring instrument and a measuring method thereof. Background Art

[0002] The plastometer index is an index used to characterize the plasticity of bituminous coal. It evaluates the coking performance of coal by measuring the maximum thickness (Y value) and the final volume shrinkage (X value) of the plastic layer formed during the heating process of coal. The plastometer index of bituminous coal is measured using a plastometer index measuring instrument.

[0003] That is, under the condition of constant pressure, the coal sample loaded in the coal cup is heated unilaterally from the lower part, so that a series of isothermal layers are formed in the coal cup. As the temperature rises, the coal sample gradually decreases, the plastic body first thickens and then gradually thins, and at the same time, the semi-coke layer gradually thickens until finally it is completely solidified into semi-coke. By measuring the maximum thickness and the final volume shrinkage of the plastic body, the coking performance of coal can be evaluated. Before adding the coal sample to the coal cup, a thin steel rod sleeved with a paper tube needs to be inserted inside the coal cup first. After the coal sample in the coal cup is extruded in the plastometer index measuring instrument, the staff manually pulls out the thin steel rod to form a hole for measurement, and then the measurement is carried out through a probe.

[0004] However, during the determination of the plastometer index, the staff needs to manually pull out the thin steel rod from the coal cup, which is time-consuming and laborious. If the thin steel rod is tilted due to the shaking of the staff's hand during this process, it may directly interfere with the structure of the coal sample, resulting in deformation or displacement, and further affecting the accurate measurement of the maximum thickness Y value of the plastic layer, thus seriously affecting the accuracy of the probe measurement and the accuracy of the volume curve. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a plastometer index measuring instrument and a measuring method thereof.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A plastometer index measuring instrument, comprising a workbench, a cover body installed on the top of the workbench, and a control box installed on one side of the cover body. An adjusting component is installed inside the workbench, and the adjusting component includes two groups of furnace bricks.

[0007] A pressing component is installed inside the workbench. The pressing component includes a bearing mechanism arranged on the top of the two groups of furnace bricks. Both groups of bearing mechanisms include a coal cup inserted on the top of the corresponding furnace brick and a support plate installed on the top of the coal cup. A pressure rod and a thin steel rod are vertically inserted through the top of the support plate, and a paper tube is sleeved on the outer side wall of the thin steel rod.

[0008] A measuring component is installed on the top of the workbench. The measuring component includes a connecting frame arranged on the top of the workbench. A driving motor is installed on the side wall of the connecting frame. The output end of the driving motor is connected to a flat plate, and a probe is arranged on one side of the bottom of the flat plate.

[0009] A positioning component is installed on the top of the flat plate.

[0010] The present invention is further configured as follows: A grasping component is installed at the bottom of the flat plate and away from the probe. The grasping component includes a first ring body and a second ring body rotatably connected to the bottom of the flat plate. The first ring body and the second ring body are arranged vertically. A plurality of telescopic rods are hingedly installed between the first ring body and the second ring body. A three-jaw chuck is installed at the bottom of the second ring body.

[0011] The grasping component further includes a second motor installed on the top of the flat plate. The output end of the second motor penetrates through the flat plate and is connected to a first gear. A second gear is sleeved and connected to the top of the first ring body. The first gear and the second gear are meshed with each other.

[0012] The present invention is further configured as follows: A clamping mechanism is installed at the bottom of the three-jaw chuck. The clamping mechanism includes three arc-shaped plates. The three arc-shaped plates are respectively connected to the three jaws of the three-jaw chuck. A sliding groove is opened on the inner wall of each arc-shaped plate. A clamping plate is slidably connected to the side wall of each arc-shaped plate. The clamping plate is slidably connected by a slider and the corresponding sliding groove. The bottom of each clamping plate is tapered, and a plurality of limiting strips are connected to the bottom of the inner wall of each clamping plate. A fixing strip is connected to the inner wall of each arc-shaped plate. A through hole is formed between the three fixing strips.

[0013] The present invention is further configured as follows: The adjusting component includes a bracket installed inside the workbench and a displacement mechanism installed on the top of the bracket. Both furnace bricks are slidably connected to the top of the displacement mechanism. The pressing component includes four oil cylinders. Every two oil cylinders are in a group. The top of the oil cylinders in the same group is connected to a pressing plate. The middle part of the bottom surface of the pressing plate is connected to a pressing column.

[0014] By adopting the above technical solution, by using the thrust of the telescopic rod, the clamping mechanism moves downward smoothly, so that the clamping plate contacts the support plate and slides. Subsequently, the three-jaw chuck drives the arc-shaped plate and the clamping plate to gradually approach and tightly clamp the thin steel rod. When the telescopic rod moves upward, the whole clamping mechanism rises coordinately and smoothly pulls out the thin steel rod, while the clamping plate and the limiting strip limit the top of the paper tube, thus realizing the electric extraction of the thin steel rod and effectively avoiding the problem of the thin steel rod shaking that may be caused by manual operation.

[0015] While the thin steel rod is clamped and pulled out, the second motor starts, driving the first gear to rotate. The rotation of the first gear further drives the second gear, the first ring body, the second ring body, the three-jaw chuck, and the entire clamping mechanism to rotate synchronously. At this time, the three fixing bars cooperate closely to drive the thin steel rod to rotate synchronously during the process of being pulled and lifted. This design effectively alleviates the possible upward following situation of the paper tube due to the upward movement of the thin steel rod, ensuring the stability and accuracy of the operation.

[0016] The present invention is further configured as: the measuring assembly includes an electric slide rail installed on the top of the workbench. A sliding table is slidably connected to the top of the electric slide rail. A vertical rod is installed on the top of the sliding table. The connecting frame is installed on the outer side wall of the vertical rod. An adjusting cylinder is installed on the top of the connecting frame. The piston rod of the adjusting cylinder penetrates through the connecting frame and is connected to a connecting plate. The driving motor is installed on the side wall of the connecting plate.

[0017] The present invention is further configured as: a first motor is installed on the top of the flat plate and above the probe. The output end of the first motor penetrates through the flat plate and is connected to a rotating tube. An L-shaped groove is formed at the bottom of the outer side wall of the rotating tube. A connecting tube is inserted into the interior of the rotating tube. A convex column is connected to the outer side wall of the connecting tube. The convex column is slidably connected inside the L-shaped groove. A probe is installed at the bottom of the connecting tube.

[0018] By adopting the above technical solution, after the coal sample in the coal cup is in a compressed state, the staff takes out the thin steel rod and retains the paper tube. Then, the probe adjusts its position by the cooperation of the electric slide rail and the adjusting cylinder. The probe moves above the paper tube. After that, the coal sample in the coal cup is heated. The adjusting cylinder pushes the driving motor and the flat plate downward, causing the first motor to drive the rotating tube, the connecting tube, and the probe to move downward. The probe extends into the hole at the position of the paper tube to measure the caking layer of the heated coal sample. At the same time, the first motor drives the rotating tube, the connecting tube, and the probe to rotate at a low speed to alleviate the adhesion of the colloid. If the probe is contaminated, through the cooperation of the L-shaped groove and the convex column on the connecting tube, the used probe can be quickly disassembled and replaced with an unused probe, ensuring the accuracy of the probe measurement.

[0019] The present invention is further configured as: the positioning assembly includes a fixing frame installed on the top of the flat plate and a fixing rod vertically installed inside the fixing frame. Two hinge plates are connected to the outer side wall of the fixing rod. The end of the hinge plate is hinged with a clamping arm. A two-way cylinder is horizontally installed on the top of the fixing frame. The two piston rods of the two-way cylinder are respectively engaged with the ends of the two clamping arms.

[0020] The present invention is further configured as: both of the two clamping arms are arc-shaped, and clamping blocks are installed on the opposite sides of the two clamping arms.

[0021] The present invention is further configured such that: two top plates are mounted on the outer sidewall of the fixed rod, and V-shaped blocks are mounted on one side of each of the two top plates away from the fixed rod. Two grooves are symmetrically formed on the sidewall of each V-shaped block, and an auxiliary block is mounted inside each groove.

[0022] By adopting the above technical solution, before the thin steel rod is pulled out once and the clamping mechanism does not loosen, the bidirectional cylinder pushes the two clamping arms to swing, causing the two clamping arms and the two clamping blocks to cooperate to clamp the thin steel rod, maintaining the position and height of the thin steel rod. At the same time, the two V-shaped blocks limit the coaxiality of the thin steel rod, avoiding the situation that the thin steel rod is offset and deforms the paper tube.

[0023] A method for determining the caking index, using the caking index measuring instrument described above, includes the following steps:

[0024] S1. Place the measured coal sample into the inside of the coal cup. Insert a pressure rod and a thin steel rod into the coal cup to be used. A paper tube is sleeved outside the thin steel rod. Then install the support plate on the top of the coal cup, and then embed the coal cup in the top of the furnace brick for standby.

[0025] S2. During the measurement of the coal sample, the furnace brick moves to the lower part of the pressing assembly, the pressure rod presses down and maintains the pressing state. Then, the thin steel rod is clamped by the grasping assembly and pulled up a certain stroke. Subsequently, the grasping assembly releases the thin steel rod, and at the same time, the positioning assembly clamps the thin steel rod. After the grasping assembly re-adjusts its position, it clamps the thin steel rod again and repeats the upward pulling action of the previous time until the thin steel rod is completely pulled out.

[0026] S3. During the process of pulling out the thin steel rod, use the positioning assembly to limit the position, height and coaxiality of the thin steel rod.

[0027] S4. When the thin steel rod is completely pulled out, there is a hole in the position of the paper tube. Then the coal sample in the coal cup is heated. At the same time, the driving motor drives the flat plate to rotate 180 degrees, and the probe moves to directly above the paper tube. Subsequently, the probe extends into the hole in the position of the paper tube to measure the caking layer of the heated coal sample.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] (1) By setting the grasping assembly, using the thrust of the telescopic rod, the clamping mechanism moves down smoothly, causing the clamping plate to contact and slide with the support plate. Subsequently, the three-jaw chuck drives the arc plate and the clamping plate to gradually approach and tightly clamp the thin steel rod. When the telescopic rod moves upward, the clamping mechanism as a whole rises coordinately and smoothly pulls out the thin steel rod, while the clamping plate and the limiting strip limit the top of the paper tube, thus realizing the electric extraction of the thin steel rod and effectively avoiding the problem of the thin steel rod shaking that may be caused by manual operation.

[0030] (2) While the thin steel rod is clamped and pulled out, the second motor starts, driving the first gear to rotate. The rotation of the first gear further drives the second gear, the first ring body, the second ring body, the three-jaw chuck, and the entire clamping mechanism to rotate synchronously. At this time, the three fixing bars cooperate closely, driving the thin steel rod to rotate synchronously during the process of being pulled and lifted. This design effectively alleviates the possible following-up situation of the paper tube due to the upward movement of the thin steel rod, ensuring the stability and accuracy of the operation.

[0031] (3) Before the thin steel rod is pulled out once and the clamping mechanism is not loosened, the double-acting cylinder pushes the two clamping arms to swing, causing the two clamping arms and the two clamping blocks to cooperate to clamp the thin steel rod, maintaining the position and height of the thin steel rod. At the same time, the two V-shaped blocks limit the coaxiality of the thin steel rod, avoiding the situation where the thin steel rod is deflected and deforms the paper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of a plastometer according to the present invention.

[0033] Figure 2 It is a schematic diagram of the connection structure between the workbench and the measuring assembly in the present invention.

[0034] Figure 3 It is a schematic diagram of the cooperation structure between the pressing assembly and the adjusting assembly in the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the carrying mechanism in the present invention.

[0036] Figure 5 It is a schematic diagram of the structure of the measuring assembly in the present invention.

[0037] Figure 6 It is a schematic diagram of the connection structure between the measuring assembly and the grasping assembly in the present invention.

[0038] Figure 7 It is a schematic diagram of the structure of the grasping assembly in the present invention.

[0039] Figure 8 It is a schematic diagram of the sectional structure of the clamping mechanism in the present invention.

[0040] Figure 9 It is a schematic diagram of the connection structure between the clamping plate and the limiting strip in the present invention.

[0041] Figure 10 It is a schematic diagram of the structure of the positioning assembly in the present invention.

[0042] Figure 11 It is a schematic diagram of the partial bottom view structure of the measuring assembly in the present invention.

[0043] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Workbench; 2. Cover; 3. Control box;

[0044] 4. Adjusting assembly; 41. Bracket; 42. Displacement mechanism; 43. Furnace brick;

[0045] 5. Compressing assembly; 51. Bearing mechanism; 511. Coal cup; 512. Support plate; 513. Pressing rod; 514. Thin steel rod;

[0046] 52. Oil cylinder; 53. Pressing plate; 54. Extrusion column;

[0047] 6. Measuring assembly; 61. Electric slide rail; 62. Slide table; 63. Vertical rod; 64. Connecting frame; 65. Adjusting cylinder; 66. Connecting plate; 67. Driving motor; 68. Flat plate; 69. First motor; 601. Rotating pipe; 602. Connecting pipe; 603. Probe; 604. Convex column;

[0048] 7. Gripping assembly; 71. Second motor; 72. First gear; 73. Second gear; 74. First ring body; 75. Second ring body; 76. Telescopic rod; 77. Three-jaw chuck; 78. Clamping mechanism; 781. Arc plate; 782. Fixed strip; 783. Chute; 784. Clamping plate; 785. Limit strip;

[0049] 8. Positioning assembly; 81. Fixed frame; 82. Fixed rod; 83. Clamping arm; 84. Double-acting cylinder; 85. Hinge plate; 86. Clamping block; 87. Top plate; 88. V-shaped block; 89. Groove; 801. Auxiliary block. Detailed implementation mode

[0050] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0051] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0052] Please refer to Figures 1-11 , the present invention provides the following technical solutions:

[0053] Embodiment 1, refer to Figure 1 and Figure 2 , a plastometer, comprising a workbench 1, a cover body 2 installed on the top of the workbench 1, and a control box 3 installed on one side of the cover body 2. The workbench 1 and the cover body 2 cooperate to form a plastometer index measurement environment. An adjusting assembly 4 is installed inside the workbench 1. The adjusting assembly 4 is used to heat and keep warm the coal sample to be measured. The specific structure of the adjusting assembly 4 is as follows:

[0054] Refer to Figure 2 and Figure 3, the adjusting component 4 includes two groups of furnace bricks 43. A bracket 41 is installed inside the workbench 1, and a displacement mechanism 42 is installed on the top of the bracket 41. Both furnace bricks 43 are slidably connected to the top of the displacement mechanism 42. The displacement mechanism 42 can be an electric conveyor belt mechanism. Two displacement blocks are connected to the conveyor belt of the electric conveyor belt mechanism, and the two furnace bricks 43 are respectively installed on the tops of the two displacement blocks. When the conveyor belt of the electric conveyor belt mechanism drives, the two displacement blocks drive the two furnace bricks 43 to horizontally displace at the same time, thereby adjusting the position of the furnace bricks 43.

[0055] Refer to Figures 2-4 , a pressing component 5 is installed inside the workbench 1. The pressing component 5 includes four oil cylinders 52. Every two oil cylinders 52 form a group. A pressing plate 53 is connected to the top of the same group of oil cylinders 52, and an extrusion column 54 is connected to the middle of the bottom surface of the pressing plate 53.

[0056] Load-bearing mechanisms 51 are arranged on the tops of both groups of furnace bricks 43. Both groups of load-bearing mechanisms 51 include coal cups 511 inserted into the tops of the corresponding furnace bricks 43 and support plates 512 installed on the tops of the coal cups 511. A pressure rod 513 and a thin steel rod 514 are vertically inserted through the top of the support plate 512, and a paper tube is sleeved on the outer side wall of the thin steel rod 514.

[0057] The furnace bricks 43 are used to place the load-bearing mechanisms 51. The coal cups 511 in the load-bearing mechanisms 51 are suitable for loading the coal samples to be measured, the pressure rods 513 are suitable for pressing the coal samples, the thin steel rods 514 are used to reserve measurement holes in the coal samples loaded in the coal cups 511 and pressed, and the paper tubes prevent the collapse of the coal samples.

[0058] Specifically, insert the pressure rod 513 and the thin steel rod 514 into the coal cup 511 to be used, sleeve a paper tube on the outside of the thin steel rod 514, then install the support plate 512 on the top of the coal cup 511, put the coal sample to be measured into the coal cup 511, and then embed the coal cup 511 on the top of the furnace brick 43 for standby. When measuring the coal sample, the furnace brick 43 moves to directly below the extrusion column 54, and the oil cylinder 52 drives the pressing plate 53 and the extrusion column 54 to move downward to press the pressure rod 513 and keep the extrusion state, thereby ensuring that the coal sample in the coal cup 511 is in a pressed state.

[0059] Refer to Figure 2 , Figure 5 and Figure 6 , a measuring component 6 is installed on the top of the workbench 1. The measuring component 6 is used to measure the caking index of the coal sample. The specific structure of the measuring component 6 is as follows:

[0060] Refer to Figure 2 , Figure 5 and Figure 6, the measuring assembly 6 includes an electric slide rail 61 installed on the top of the workbench 1. The electric slide rail 61 can be a stepping motor linear guide slider module, that is, the stepping motor drives the screw rod in the linear guide to rotate, causing the slider to slide along the extension direction of the screw rod and the linear guide. A slide table 62 is slidably connected to the top of the electric slide rail 61. The slide table 62 is connected to the slider of the electric slide rail 61. When the slider moves, the slide table 62 moves synchronously. A vertical rod 63 is installed on the top of the slide table 62. A connecting frame 64 is installed on the outer side wall of the vertical rod 63. An adjusting cylinder 65 is installed on the top of the connecting frame 64. The piston rod of the adjusting cylinder 65 penetrates through the connecting frame 64 and is connected to a connecting plate 66. A driving motor 67 is installed on the side wall of the connecting plate 66. The output end of the driving motor 67 is connected to a flat plate 68. A probe 603 is arranged on one side of the bottom of the flat plate 68. When the slide table 62 moves, it drives the connecting frame 64, the adjusting cylinder 65, the connecting plate 66, the driving motor 67 and the flat plate 68 to move synchronously, thereby adjusting the position of the probe 603. The adjusting cylinder 65 is used to push the connecting plate 66 to move up and down, thereby driving the driving motor 67 and the flat plate 68 to move up and down, and further adjusting the height of the probe 603.

[0061] In this embodiment, referring to Figure 2 , Figure 5 and Figure 6 , a first motor 69 is installed on the top of the flat plate 68 and above the probe 603. The output end of the first motor 69 penetrates through the flat plate 68 and is connected to a rotating tube 601. An L-shaped groove is formed at the bottom of the outer side wall of the rotating tube 601. A connecting tube 602 is inserted into the rotating tube 601. A convex column 604 is connected to the outer side wall of the connecting tube 602. The convex column 604 is slidably connected inside the L-shaped groove. The probe 603 is installed at the bottom of the connecting tube 602. The first motor 69 is used to drive the rotating tube 601 to rotate, and the connecting tube 602 is clamped to the rotating tube 601 through the L-shaped groove and the convex column 604. After clamping, it is locked with screws. The probe 603 is installed inside the connecting tube 602, and the probe 603 and the connecting tube 602 are quickly disassembled through the convex column 604 and the L-shaped groove.

[0062] Specifically, after the coal sample in the coal cup 511 is in a compressed state, the staff takes out the thin steel rod 514 and keeps the paper tube. Then, the probe 603 adjusts its position by cooperating with the electric slide rail 61 and the adjusting cylinder 65. The probe 603 moves above the paper tube. Then, the coal sample in the coal cup 511 is heated. The adjusting cylinder 65 pushes the driving motor 67 and the flat plate 68 downward, causing the first motor 69, the rotating tube 601, the connecting tube 602 and the probe 603 to move downward. The probe 603 extends into the hole at the position of the paper tube to measure the caking layer of the heated coal sample. At the same time, the first motor 69 drives the rotating tube 601, the connecting tube 602 and the probe 603 to rotate at a low speed to relieve the adhesion of the caking mass.

[0063] If the probe 603 is contaminated, the used probe 603 can be quickly disassembled and replaced with an unused probe 603 through the cooperation of the L-shaped groove and the convex column 604 on the connecting pipe 602, ensuring the accuracy of the measurement by the probe 603.

[0064] In the second embodiment, during the determination of the caking index, the staff needs to manually rotate and pull out the thin steel rod 514 from the coal cup 511. If the thin steel rod 514 tilts during this process, it may not only directly interfere with the coal sample structure, resulting in deformation or displacement, thus affecting the accurate measurement of the maximum thickness Y value of the plastic layer, and seriously affecting the measurement accuracy of the probe 603 and the accuracy of the volume curve.

[0065] Therefore, a grasping assembly 7 is installed at the bottom of the flat plate 68 and away from the probe 603. The grasping assembly 7 is suitable for linearly pulling out the thin steel rod 514 from the middle of the coal sample. The specific structure of the grasping assembly 7 is as follows:

[0066] Refer to Figures 6-9 As shown in the figure, the grasping assembly 7 includes a first ring body 74 and a second ring body 75 rotatably connected to the bottom of the flat plate 68. The first ring body 74 and the second ring body 75 are arranged vertically. A plurality of telescopic rods 76 are hinged and installed between the first ring body 74 and the second ring body 75. A three-jaw chuck 77 is installed at the bottom of the second ring body 75, and a clamping mechanism 78 is installed at the bottom of the three-jaw chuck 77. The telescopic rods 76 are used to adjust the distance between the first ring body 74 and the second ring body 75. When the telescopic rods 76 contract, the second ring body 75 will be pulled closer to the first ring body 74, thereby driving the three-jaw chuck 77 and the clamping mechanism 78 to move synchronously. The three-jaw chuck 77 and the clamping mechanism 78 cooperate to grasp the thin steel rod 514. At the same time, the clamping mechanism 78 can also limit the paper tube sleeved outside the thin steel rod 514. The specific structure of the clamping mechanism 78 is as follows:

[0067] Refer to Figures 7-9, the clamping mechanism 78 includes three arc-shaped plates 781. The three arc-shaped plates 781 are respectively connected to the three jaws of the three-jaw chuck 77. A chute 783 is provided on the inner wall of each arc-shaped plate 781. A clamping plate 784 is slidably connected to the side wall of each arc-shaped plate 781. The clamping plate 784 is slidably connected by using a slider and the corresponding chute 783. The bottom of each clamping plate 784 is tapered, and a plurality of limiting strips 785 are connected to the bottom of the inner wall of the clamping plate 784. The limiting strips 785 can be made of rubber. When the three arc-shaped plates 781 are respectively driven by the three jaws of the three-jaw chuck 77, the three arc-shaped plates 781 respectively drive the corresponding clamping plates 784 to move synchronously. When the three arc-shaped plates 781 approach each other, they are spliced to form a pipe body, and when the three clamping plates 784 approach each other, they are spliced to form a limiting member for limiting the position of the paper tube. The paper tube is located in the tapered part of the clamping plate 784. A fixing strip 782 is connected to the inner wall of each arc-shaped plate 781. A through hole is formed between the three fixing strips 782. When the three fixing strips 782 approach each other, they are spliced to form a fixture for clamping the thin steel rod 514.

[0068] Specifically, when measuring the coal sample, the displacement mechanism 42 drives the furnace brick 43 to move directly below the extrusion column 54. The oil cylinder 52 drives the pressure plate 53 and the extrusion column 54 to move downward to press the pressure rod 513 and maintain the extrusion state. Then, the telescopic rod 76 pushes the second ring body 75 and the three-jaw chuck 77 downward. At this time, the bottom of the clamping plate 784 contacts the top of the support plate 512 and slides upward inside the corresponding arc-shaped plate 781 under the reaction force. Then, the three arc-shaped plates 781 are respectively controlled by the three jaws of the three-jaw chuck 77 to approach each other, causing the three clamping plates 784 to approach each other. Among them, the three fixing strips 782 cooperate to clamp the thin steel rod 514, and the clamping plate 784 and the limiting strips 785 cooperate to limit the top of the paper tube, achieving the effect of electrically extracting the thin steel rod 514.

[0069] Then, the telescopic rod 76 contracts, causing the second ring body 75, the three-jaw chuck 77, the arc-shaped plate 781, and the fixing strip 782 to move upward, causing the thin steel rod 514 to be pulled upward by a certain stroke. During the process of the thin steel rod 514 being pulled upward, the clamping plate 784 and the limiting strips 785 continue to maintain the limiting effect on the top of the paper tube under the influence of gravity. After the thin steel rod 514 is pulled to a certain height, the three-jaw chuck 77 and the clamping mechanism 78 cooperate to release the thin steel rod 514. The telescopic rod 76 extends to drive the second ring body 75, the three-jaw chuck 77, and the clamping mechanism 78 to move downward to clamp the thin steel rod 514 again, and repeat the previous upward pulling action until the thin steel rod 514 is completely pulled out.

[0070] In the third embodiment, when the thin steel rod 514 is pulled out, if the paper tube is affected by the coal sample and the pulling force of the thin steel rod 514 and is used improperly, the paper tube may be pulled out together or deformed. Only restricting the top of the paper tube may still damage the shape of the paper tube.

[0071] To this end, referring to Figures 6-9 , the grasping assembly 7 further includes a second motor 71 installed on the top of the flat plate 68. The output end of the second motor 71 penetrates through the flat plate 68 and is connected with a first gear 72. A second gear 73 is sleeved and connected to the top of the first ring body 74. The first gear 72 and the second gear 73 are meshed with each other. When the thin steel rod 514 is clamped and pulled out, the second motor 71 drives the first gear 72 to rotate, causing the first gear 72 to drive the second gear 73, the first ring body 74, the second ring body 75, the three-jaw chuck 77 and the clamping mechanism 78 to rotate synchronously as a whole. The three fixing bars 782 cooperate to drive the thin steel rod 514 to rotate, that is, the thin steel rod 514 rotates synchronously during the process of being pulled and lifted, alleviating the situation where the paper tube follows the thin steel rod 514 to move up.

[0072] During the process of pulling out the thin steel rod 514, since it is pulled out intermittently, therefore, after the thin steel rod 514 is pulled out for a certain length, the grasping assembly 7 needs to readjust the grasping position. During this process, if the thin steel rod 514 is not restricted, the thin steel rod 514 will fall due to gravity or squeeze the paper tube at the bottom, resulting in deformation of the paper tube.

[0073] Referring to Figure 6 and Figure 10 , to this end, a positioning assembly 8 is installed on the top of the flat plate 68 and above the first ring body 74. During the process of pulling out the thin steel rod 514, the positioning assembly 8 is used to restrict the position, height and coaxiality of the thin steel rod 514. The specific structure of the positioning assembly 8 is as follows:

[0074] In this embodiment, the positioning assembly 8 includes a fixing frame 81 installed on the top of the flat plate 68 and a fixing rod 82 vertically installed inside the fixing frame 81. Two hinge plates 85 are connected to the outer side wall of the fixing rod 82. The end of the hinge plate 85 is hinged with a clamping arm 83. Both clamping arms 83 are arc-shaped, and clamping blocks 86 are installed on the opposite sides of the two clamping arms 83. A double-acting cylinder 84 is horizontally installed on the top of the fixing frame 81. The two piston rods of the double-acting cylinder 84 are respectively meshed with the ends of the two clamping arms 83. The double-acting cylinder 84 is used to push one end of the two clamping arms 83 to move, causing the clamping arms 83 to swing on the corresponding hinge plates 85. The two clamping arms 83 are used in cooperation to initially clamp the thin steel rod 514, so that the thin steel rod 514 can remain stable during the process of being pulled out and the clamping mechanism 78 readjusts the clamping position.

[0075] Referring to Figure 10, two top plates 87 are installed on the outer side wall of the fixed rod 82. V-shaped blocks 88 are installed on one side of the two top plates 87 away from the fixed rod 82. Two grooves 89 are symmetrically formed on the side wall of the V-shaped block 88. An auxiliary block 801 is installed inside each groove 89. When the clamping arms 83 clamp the thin steel rod 514, the two V-shaped blocks 88 are used to limit the coaxiality of the thin steel rod 514.

[0076] Specifically, before the thin steel rod 514 is pulled out once and the clamping mechanism 78 is not loosened, the double-acting cylinder 84 pushes the two clamping arms 83 to swing, causing the two clamping arms 83 and the two clamping blocks 86 to cooperate to clamp the thin steel rod 514, keeping the position and height of the thin steel rod 514 unchanged. At the same time, the two V-shaped blocks 88 limit the coaxiality of the thin steel rod 514 to prevent the thin steel rod 514 from shifting and deforming the paper tube.

[0077] After the positioning assembly 8 clamps the thin steel rod 514, the clamping mechanism 78 can be loosened and readjusted to clamp the thin steel rod 514. When the clamping mechanism 78 pulls the thin steel rod 514 upward, the positioning assembly 8 releases the clamping of the thin steel rod 514. Then, before the clamping mechanism 78 loosens the thin steel rod 514, the positioning assembly 8 reclamps the thin steel rod 514, and so on until the thin steel rod 514 is completely pulled out.

[0078] Since the thin steel rod 514 is relatively long, each time the clamping mechanism 78 pulls the thin steel rod 514, the thin steel rod 514 needs to readjust its coaxiality to ensure that all positions on the outer wall of the thin steel rod 514 are coaxial. The two V-shaped blocks 88 can achieve the function of keeping all positions on the outer wall of the thin steel rod 514 coaxial. While all positions on the outer wall of the thin steel rod 514 are coaxial, it is pulled up and down. Each time the thin steel rod 514 is pulled, the positioning assembly 8 and the clamping mechanism 78 alternately clamp the thin steel rod 514, not only achieving the purpose of indirectly pulling out the thin steel rod 514, but also ensuring that the thin steel rod 514 does not drop.

[0079] After the thin steel rod 514 is completely pulled out, there is a hole in the position of the paper tube. Then, the coal sample in the coal cup 511 is heated. At the same time, the drive motor 67 drives the flat plate 68 to rotate 180 degrees, and the probe 603 moves to directly above the paper tube. Subsequently, the probe 603 extends into the hole in the position of the paper tube to measure the caking layer of the heated coal sample.

[0080] Embodiment 4, a method for measuring the caking index, uses a caking index measuring instrument as described above, including the following steps:

[0081] S1. Place the measured coal sample inside the coal cup 511. Insert the pressure rod 513 and the thin steel rod 514 inside the coal cup 511 that needs to be used. A paper tube is sleeved outside the thin steel rod 514. Then install the support plate 512 on the top of the coal cup 511. Subsequently, embed the coal cup 511 in the top of the furnace brick 43 for standby.

[0082] S2. When measuring the coal sample, the furnace brick moves below the pressing assembly. The pressure rod presses down and maintains the extrusion state. Then, the thin steel rod is clamped by the grasping assembly and pulled upward for a certain stroke. Subsequently, the grasping assembly releases the thin steel rod. At the same time, the positioning assembly clamps the thin steel rod 514. After the grasping assembly adjusts its position again, it clamps the thin steel rod again and repeats the previous upward pulling action until the thin steel rod is completely pulled out.

[0083] The more specific steps of S2 are as follows:

[0084] S21. When measuring the coal sample, the displacement mechanism 42 drives the furnace brick 43 to move directly below the extrusion column 54. The oil cylinder 52 drives the pressure plate 53 and the extrusion column 54 to move downward to press the pressure rod 513 and maintain the extrusion state. Then, the telescopic rod 76 pushes the second ring body 75 and the three-jaw chuck 77 downward. At this time, the bottom of the clamping plate 784 contacts the top of the support plate 512 and slides upward inside the corresponding arc plate 781 under the reaction force. Then, the three arc plates 781 are controlled to approach each other by the three jaws of the three-jaw chuck 77, causing the three clamping plates 784 to approach each other. Among them, the three fixing strips 782 cooperate to clamp the thin steel rod 514, and the clamping plate 784 and the limiting strip 785 cooperate to limit the top of the paper tube.

[0085] S22. Then, the telescopic rod 76 contracts, causing the second ring body 75, the three-jaw chuck 77, the arc plate 781, and the fixing strip 782 to move upward, causing the thin steel rod 514 to be pulled upward for a certain stroke. During the process of the thin steel rod 514 being pulled upward, the clamping plate 784 and the limiting strip 785 continue to maintain the limiting effect on the top of the paper tube due to gravity. At the same time, the second motor 71 drives the first gear 72 to rotate, causing the first gear 72 to drive the second gear 73, the first ring body 74, the second ring body 75, the three-jaw chuck 77, and the clamping mechanism 78 to rotate synchronously. The three fixing strips 782 cooperate to drive the thin steel rod 514 to rotate, that is, the thin steel rod 514 rotates synchronously during the process of being pulled upward, alleviating the situation where the paper tube follows the thin steel rod 514 upward.

[0086] S23. Then, the three-jaw chuck 77 and the clamping mechanism 78 cooperate to release the thin steel rod 514. The telescopic rod 76 extends to drive the second ring body 75, the three-jaw chuck 77, and the clamping mechanism 78 to move downward to clamp the thin steel rod 514 again, and repeat the previous upward pulling action until the thin steel rod 514 is completely pulled out.

[0087] S3. During the process of pulling out the thin steel rod 514, the positioning component 8 is used to limit the position, height, and coaxiality of the thin steel rod 514.

[0088] The more specific steps of S3 are as follows:

[0089] S31. Before the thin steel rod 514 is pulled out once and the clamping mechanism 78 is not loosened, the double-acting cylinder 84 pushes the two clamping arms 83 to swing, causing the two clamping arms 83 and the two clamping blocks 86 to cooperate to clamp the thin steel rod 514, maintaining the position and height of the thin steel rod 514. At the same time, the two V-shaped blocks 88 limit the coaxiality of the thin steel rod 514.

[0090] S32. After the positioning component 8 clamps the thin steel rod 514, the clamping mechanism 78 can be loosened and readjusted to clamp the thin steel rod 514. When the clamping mechanism 78 lifts the thin steel rod 514 upward, the positioning component 8 releases the clamping of the thin steel rod 514. After that, before the clamping mechanism 78 loosens the thin steel rod 514, the positioning component 8 reclamps the thin steel rod 514, and so on until the thin steel rod 514 is completely pulled out.

[0091] S4. After the thin steel rod 514 is completely pulled out, there are holes at the position of the paper tube. Then, the coal sample in the coal cup 511 is heated. At the same time, the drive motor 67 drives the flat plate 68 to rotate 180 degrees, and the probe 603 moves to directly above the paper tube. Subsequently, the probe 603 extends into the holes at the position of the paper tube to measure the caking layer of the heated coal sample.

[0092] The more specific steps of S4 are as follows:

[0093] S41. After the thin steel rod 514 is completely pulled out, there are holes at the position of the paper tube. Then, the coal sample in the coal cup 511 is heated. At the same time, the drive motor 67 drives the flat plate 68 to rotate 180 degrees. Then, the electric slide rail 61 is used to drive the slide table 62 to displace, and the probe 603 moves to directly above the paper tube. Subsequently, the adjusting cylinder 65 pushes the drive motor 67 and the flat plate 68 downward, causing the first motor 69 to drive the rotating tube 601, the connecting tube 602, and the probe 603 to move downward. The probe 603 extends into the holes at the position of the paper tube to measure the caking layer of the heated coal sample. At the same time, the first motor 69 drives the rotating tube 601, the connecting tube 602, and the probe 603 to rotate at a low speed to relieve the adhesion of the caking agent.

[0094] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

Claims

1. A colloid layer index measuring instrument, characterized in that: It comprises a workbench (1), a cover (2) installed on the top of the workbench (1), and a control box (3) installed on one side of the cover (2); an adjustment component (4) is installed inside the workbench (1); the adjustment component (4) comprises two groups of furnace bricks (43); A pressing assembly (5) is installed inside the workbench (1), and the pressing assembly (5) comprises a bearing mechanism (51) arranged on the top of two groups of furnace bricks (43), and the two groups of bearing mechanisms (51) each comprise a coal cup (511) inserted into the top of the corresponding furnace brick (43) and a support plate (512) installed on the top of the coal cup (511), a pressing rod (513) and a thin steel rod (514) are vertically penetrated through the top of the support plate (512), and the outer wall of the thin steel rod (514) is sleeved with a paper tube; A measuring component (6) is installed on the top of the workbench (1), and the measuring component (6) comprises a connecting frame (64) arranged on the top of the workbench (1), a driving motor (67) is installed on the side wall of the connecting frame (64), an output end of the driving motor (67) is connected to a flat plate (68), and a probe (603) is arranged on one side of the bottom of the flat plate (68); A positioning assembly (8) is installed on the top of the plate (68); A gripping assembly (7) is installed at the bottom of the plate (68) and away from the probe (603), the gripping assembly (7) comprising a first ring body (74) and a second ring body (75) rotatably connected to the bottom of the plate (68), the first ring body (74) and the second ring body (75) being arranged in an up-and-down arrangement, a plurality of groups of telescopic rods (76) being hingedly installed between the first ring body (74) and the second ring body (75), and a three-jaw chuck (77) being installed at the bottom of the second ring body (75); The grabbing assembly (7) further comprises a second motor (71) mounted on the top of the plate (68); an output end of the second motor (71) passes through the plate (68) and is connected to a first gear (72); a second gear (73) is sleeved on the top of the first ring (74); the first gear (72) and the second gear (73) are meshed with each other; A clamping mechanism (78) is installed at the bottom of the three-jaw chuck (77), and the clamping mechanism (78) includes three arc-shaped plates (781). The three arc-shaped plates (781) are respectively connected to the three clamping jaws of the three-jaw chuck (77), and the inner wall of each arc-shaped plate (781) is provided with a sliding groove (783). A clamping plate (784) is slidably connected to the side wall of each arc-shaped plate (781), and the clamping plate (784) is slidably connected by using a slider and a corresponding sliding groove (783). The bottom of each clamping plate (784) is conical, and the bottom of the inner wall of the clamping plate (784) is connected to a plurality of limiting strips (785), and the inner wall of each arc-shaped plate (781) is connected to a fixing strip (782), and a through hole is formed between the three fixing strips (782); The positioning assembly (8) comprises a fixing frame (81) mounted on the top of the flat plate (68) and a fixing rod (82) vertically mounted inside the fixing frame (81); the outer wall of the fixing rod (82) is connected to two hinged plates (85); the ends of the hinged plates (85) are hinged with clamping arms (83); a bidirectional cylinder (84) is horizontally mounted on the top of the fixing frame (81); the two piston rods of the bidirectional cylinder (84) are respectively engaged with the ends of the two clamping arms (83).

2. The colloid layer index measuring instrument according to claim 1, characterized in that: The adjustment assembly (4) comprises a bracket (41) installed inside the workbench (1) and a displacement mechanism (42) installed on the top of the bracket (41); the two furnace bricks (43) are slidably connected to the top of the displacement mechanism (42); the clamping assembly (5) comprises four cylinders (52), and each two cylinders (52) form a group; the tops of the cylinders (52) in the same group are connected to a pressing plate (53); and the middle of the bottom surface of the pressing plate (53) is connected to a squeezing column (54).

3. The colloid layer index measuring instrument according to claim 1, characterized in that: The measuring assembly (6) comprises an electric slide rail (61) mounted on the top of the workbench (1); the top of the electric slide rail (61) is slidably connected to a slide table (62); the top of the slide table (62) is mounted with a vertical rod (63); the connecting frame (64) is mounted on the outer side wall of the vertical rod (63); the top of the connecting frame (64) is mounted with an adjusting cylinder (65); the piston rod of the adjusting cylinder (65) passes through the connecting frame (64) and is connected to a connecting plate (66); and the driving motor (67) is mounted on the side wall of the connecting plate (66).

4. The colloid layer index measuring instrument according to claim 3, characterized in that: A first motor (69) is installed on the top of the plate (68) and above the probe (603); an output end of the first motor (69) passes through the plate (68) and is connected to a rotating tube (601); an L-shaped groove is provided at the bottom of the outer wall of the rotating tube (601); a connecting tube (602) is inserted into the interior of the rotating tube (601); a convex column (604) is connected to the outer wall of the connecting tube (602); the convex column (604) is slidably connected to the interior of the L-shaped groove; and a probe (603) is installed at the bottom of the connecting tube (602).

5. The colloid layer index measuring instrument according to claim 1, characterized in that: The two clamping arms (83) are both arranged in an arc shape, and clamping blocks (86) are installed on opposite sides of the two clamping arms (83).

6. The colloid layer index measuring instrument according to claim 5, characterized in that: Two top plates (87) are installed on the outer side wall of the fixing rod (82), and a V-shaped block (88) is installed on the side of the two top plates (87) away from the fixing rod (82). Two grooves (89) are symmetrically formed on the side wall of the V-shaped block (88), and an auxiliary block (801) is installed inside each groove (89).

7. A method for measuring a glial layer index, using a glial layer index measuring instrument as described in any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Put the coal sample to be measured into the coal cup (511), insert a pressure rod (513) and a thin steel rod (514) into the coal cup (511) to be used, and sleeve a paper tube on the outside of the thin steel rod (514), then install a support plate (512) on the top of the coal cup (511), and then embed the coal cup (511) into the top of the furnace brick (43) for standby use; S2, when the coal sample is measured, the furnace brick (43) moves to the bottom of the clamping assembly (5), the pressure rod (513) is pressed down and maintained in a squeezed state, and then the thin steel rod (514) is clamped by the grabbing assembly (7) and pulled up a certain distance, then the grabbing assembly (7) releases the thin steel rod (514), and the positioning assembly (8) clamps the thin steel rod (514), and the grabbing assembly (7) readjusts its position and clamps the thin steel rod (514) again, and repeats the previous upward pulling action until the thin steel rod (514) is completely pulled out; S3. When the thin steel rod (514) is being pulled out, the position, height and coaxiality of the thin steel rod (514) are restricted by using the positioning assembly (8); S4. When the thin steel rod (514) is completely pulled out, a hole exists at the position of the paper tube, and then the coal sample in the coal cup (511) is heated. At the same time, the driving motor (67) drives the plate (68) to rotate 180 degrees, and the probe (603) moves to the top of the paper tube. Then the probe (603) is inserted into the hole at the position of the paper tube to measure the colloid layer of the heated coal sample.

Images