Double-connecting-rod self-adaptive coal flow sampling machine

Abstract

The invention relates to the technical field of sampling machine equipment, in particular to a double-connecting-rod self-adaptive coal flow sampling machine which comprises a sampling mounting frame, a sampling driving device, a first sampling connecting rod, a second sampling connecting rod, a first sampling pushing rod, a second sampling pushing rod, a sampling mechanism and a sampling disc. A hinged shaft of the first sampling connecting rod and a hinged shaft of the second sampling connecting rod are fixedly arranged on the sampling mounting frame, the sampling driving device is arranged on the sampling mounting frame and drives the upper sides of the first sampling connecting rod and the second sampling connecting rod respectively, and one end of the second sampling pushing rod is hinged to the lower side of the second sampling connecting rod. The sampling mechanism is arranged on the sampling mounting frame in a sliding mode in the vertical direction, the lower sides of the first sampling push rod and the second sampling push rod are hinged to the sampling mechanism, the sampling disc is arranged on the sampling mounting frame and communicates with the sampling mechanism, and according to the scheme, the structure is simple, and self-adaptive coal flow sampling can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling machine equipment, in particular to a double-link adaptive coal flow sampling machine. Background Art

[0002] The composition of coal material depends on the usage requirements. In order to achieve better usage effects, various treatments on coal material are collectively referred to as coal material processing. The content of coal material processing includes coal material preheating, coal material oil blending, coal material crushing, and coal material mixing. Reasonable crushing of coal material can effectively improve the mechanical strength of coke; mixing coal evenly can improve the accuracy of coal blending, minimize the fluctuation of coal quality, and ensure the stability of the chemical composition and physical and mechanical properties of coke, so as to stabilize the coke quality. During the transportation process of coal material, it needs to be broken and transported and then subjected to subsequent processing according to the processing requirements. However, since the impurity content in different batches of coal material is different, it is necessary to sample and detect the coal flow during transportation. The coal material sampling equipment in the prior art has a low degree of automation and cannot achieve adaptive coal material sampling. Summary of the Invention

[0003] In order to solve the problem of low automation of the above-mentioned coal material sampling equipment, the present invention provides a double-link adaptive coal flow sampling machine, and the specific technical solution is as follows:

[0004] The double-link adaptive coal flow sampling machine includes a sampling mounting frame, a sampling driving device, a first sampling link, a second sampling link, a first sampling push rod, a second sampling push rod, a sampling mechanism, and a sampling tray. The first sampling link and the second sampling link are cross-arranged on the sampling mounting frame. The first sampling link and the second sampling link are hinged to each other. The hinge shaft of the first sampling link and the second sampling link is fixedly arranged on the sampling mounting frame. The sampling driving device is arranged on the sampling mounting frame and drives the upper sides of the first sampling link and the second sampling link respectively. The sampling driving device drives the first sampling link and the second sampling link to rotate along the hinge shaft. One end of the first sampling push rod is hinged to the lower side of the first sampling link. One end of the second sampling push rod is hinged to the lower side of the second sampling link. The sampling mechanism is slidably arranged on the sampling mounting frame in the vertical direction. The lower sides of the first sampling push rod and the second sampling push rod are respectively hinged to the sampling mechanism. The sampling tray is arranged on the sampling mounting frame and is communicated with the sampling mechanism.

[0005] In some embodiments, the sampling driving device includes a sampling driving motor, a sampling driving lead screw, a first sampling driving slider, and a second sampling driving slider. The sampling driving motor is fixedly arranged on the sampling mounting frame. The sampling driving lead screw is rotatably arranged on the sampling mounting frame and is in transmission connection with the sampling driving motor. Threaded teeth with opposite spiral directions are arranged on both sides of the sampling driving lead screw. The first sampling driving slider and the second sampling driving slider are slidably arranged on the sampling mounting frame in parallel. Threaded grooves that match the threaded teeth on both sides of the sampling driving lead screw are arranged on the first sampling driving slider and the second sampling driving slider. Rotating the sampling driving lead screw synchronously drives the first sampling driving slider and the second sampling driving slider on both sides to move towards or away from each other simultaneously. The first sampling driving slider is in transmission connection with the first sampling connecting rod, and the second sampling driving slider is in transmission connection with the second sampling connecting rod.

[0006] In some embodiments, the sampling driving device further includes a first driving hinge block and a second driving hinge block. The lower end of the first driving hinge block is hinged to the upper end of the first sampling connecting rod, and the lower end of the second driving hinge block is hinged to the upper end of the second sampling connecting rod. A first driving hinge connecting rod is arranged between the first driving hinge block and the first sampling driving slider. Both ends of the first driving hinge connecting rod are respectively hinged to the first driving hinge block and the first sampling driving slider. A second driving hinge connecting rod is arranged between the second driving hinge block and the second sampling driving slider. Both ends of the second driving hinge connecting rod are respectively hinged to the second driving hinge block and the second sampling driving slider.

[0007] In some embodiments, driving limit sliding grooves are arranged on the outer side walls of the first sampling driving slider and the second sampling driving slider, and driving limit sliding blocks that match the driving limit sliding grooves are arranged on the sampling mounting frame.

[0008] In some embodiments, sliding grooves that match the first sampling driving slider and the second sampling driving slider are arranged on the sampling mounting frame, and the first sampling driving slider and the second sampling driving slider slide in the sliding grooves.

[0009] In some embodiments, the sampling mechanism includes a sampling sleeve, a sampling motor, a sampling rotating shaft, and a driving auger. The sampling sleeve is slidably arranged on the sampling mounting frame. The lower ends of the first sampling push rod and the second sampling push rod are respectively hinged to the outer ends of the sampling sleeve. The driving auger is rotatably arranged inside the sampling sleeve. The sampling rotating shaft is in transmission connection with the driving auger, and the sampling motor is in transmission connection with the sampling rotating shaft.

[0010] In some embodiments, the sampling rotating shaft includes an outer rotating shaft cylinder and an inner rotating shaft rod. The outer rotating shaft cylinder is rotatably arranged on the sampling mounting bracket. The inner rotating shaft rod is slidably arranged within the outer rotating shaft cylinder. The lower end of the inner rotating shaft rod is in transmission connection with the driving auger, and the upper end of the outer rotating shaft cylinder is in transmission connection with the sampling motor. The outer rotating shaft cylinder drives the inner rotating shaft rod to rotate.

[0011] In some embodiments, the sampling disc and the sampling sleeve are on the same axis. The side wall of the sampling sleeve is provided with sampling holes, and the sampling holes communicate with the upper end surface of the sampling disc.

[0012] In some embodiments, a plurality of sampling holes are provided. The plurality of sampling holes are circumferentially arranged on the side wall of the sampling sleeve, and the set heights of the sampling holes in different directions are different. The sampling disc is provided with partition grooves having the same number as the sampling holes, and the partition grooves in different directions communicate with the corresponding sampling holes.

[0013] In some embodiments, the sampling disc is arranged in a shape like a bamboo hat. The middle part of the sampling disc is in an upper position, and the upper end surface of the sampling disc forms a cavity capable of accommodating samples.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First: In this solution, the sampling driving device drives the first sampling connecting rod and the second sampling connecting rod. And through the cooperation of the first sampling connecting rod, the second sampling connecting rod, the first sampling push rod and the second sampling push rod, the sampling mechanism is pushed downward into the coal flow, and then the sample is collected by the sampling mechanism and transported to the sampling disc for storage, thereby realizing coal sampling.

[0016] Second: In this solution, the first sampling push rod and the second sampling push rod move relatively to drive the sampling sleeve to move downward. The sampling sleeve is inserted into the inner side of the coal flow. The downward movement of the sampling sleeve drives the inner rotating shaft rod to descend synchronously, maintaining the transmission force between the sampling motor and the driving auger. When the sampling sleeve moves to an appropriate position, the sampling motor is started to drive the driving auger to rotate, guiding the coal in the coal flow to move into the inner side of the sampling sleeve. At this time, the coal will enter the corresponding partition groove through the sampling holes at the corresponding height. During the operation of the equipment, the height of the coal entering the sampling sleeve can be controlled by controlling the rotation speed of the sampling motor. After sampling, the sampling motor flips to discharge the materials in the sampling sleeve to facilitate the accuracy of the samples during subsequent operation.

[0017] Thirdly: In this solution, the sampling rotating shaft includes an outer rotating shaft cylinder and an inner rotating shaft rod. The outer rotating shaft cylinder is rotatably arranged on the sampling mounting frame. The inner rotating shaft rod is slidably arranged inside the outer rotating shaft cylinder. The lower end of the inner rotating shaft rod is in transmission connection with the driving auger, and the upper end of the outer rotating shaft cylinder is in transmission connection with the sampling motor. The outer rotating shaft cylinder drives the inner rotating shaft rod to rotate, so as to fix the sampling motor, thereby ensuring the cooperation stability between the sampling motor and the driving auger. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the double-link self-adaptive coal flow sampler;

[0019] Figure 2 is the usage state schematic diagram of the double-link self-adaptive coal flow sampler Figure 1 ;

[0020] Figure 3 is the structural schematic diagram of the sampling driving device in the double-link self-adaptive coal flow sampler;

[0021] Figure 4 is the usage state schematic diagram of the double-link self-adaptive coal flow sampler Figure 2 ;

[0022] Figure 5 is the usage state schematic diagram of the sampling mechanism in the double-link self-adaptive coal flow sampler Figure 1 ;

[0023] Figure 6 is the usage state schematic diagram of the sampling mechanism in the double-link self-adaptive coal flow sampler Figure 2 ;

[0024] Figure 7 is the structural schematic diagram of the sampling disc part in the double-link self-adaptive coal flow sampler;

[0025] Figure 8 is Figure 1 the enlarged structural schematic diagram at A in

[0026] Reference Numerals: Sampling Mounting Frame 1, Sliding Groove 11, Sampling Driving Device 2, Sampling Driving Motor 21, Sampling Driving Screw Rod 22, First Sampling Driving Slide Block 23, Second Sampling Driving Slide Block 24, First Driving Hinge Block 25, First Driving Hinge Link 251, Second Driving Hinge Block 26, Second Driving Hinge Link 261, First Sampling Link 3, Second Sampling Link 4, First Sampling Pushing Rod 5, Second Sampling Pushing Rod 6, Sampling Mechanism 7, Sampling Sleeve 71, Sampling Hole 711, Sampling Motor 72, Sampling Rotating Shaft 73, Outer Rotating Shaft Cylinder 731, Inner Rotating Shaft Rod 732, Driving Auger 74, Sampling Disc 8. Detailed Embodiments

[0027] The following further describes in detail the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0028] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary, rather than as limitations.

[0029] It should be noted that in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0030] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Terms such as "including" or "comprising" mean that the elements before this term cover the elements listed after this term, and do not exclude the possibility of also covering other elements.

[0031] It should also be noted that in the description of the present disclosure, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0032] All terms used in this disclosure have the same meanings as those understood by those of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0033] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0034] As Figures 1 to 8 shown, the double-link adaptive coal flow sampler includes a sampling mounting frame 1, a sampling driving device 2, a first sampling link 3, a second sampling link 4, a first sampling push rod 5, a second sampling push rod 6, a sampling mechanism 7, and a sampling tray 8. The first sampling link 3 and the second sampling link 4 are arranged to cross each other on the sampling mounting frame 1. The first sampling link 3 and the second sampling link 4 are hinged to each other, and the hinge shaft of the first sampling link 3 and the second sampling link 4 is fixedly arranged on the sampling mounting frame 1. The sampling driving device 2 is arranged on the sampling mounting frame 1 and drives the upper sides of the first sampling link 3 and the second sampling link 4 respectively. The sampling driving device 2 drives the first sampling link 3 and the second sampling link 4 to rotate along the hinge shaft. One end of the first sampling push rod 5 is hinged to the lower side of the first sampling link 3. One end of the second sampling push rod 6 is hinged to the lower side of the second sampling link 4. The sampling mechanism 7 is slidably arranged in the vertical direction on the sampling mounting frame 1. The lower sides of the first sampling push rod 5 and the second sampling push rod 6 are respectively hinged to the sampling mechanism 7. The sampling tray 8 is arranged on the sampling mounting frame 1 and is communicated with the sampling mechanism 7. By driving the first sampling link 3 and the second sampling link 4 through the provided sampling driving device 2, and through the mutual cooperation of the first sampling link 3, the second sampling link 4, the first sampling push rod 5, and the second sampling push rod 6, the sampling mechanism 7 is pushed to move downward into the coal flow, and then the sample is collected by the sampling mechanism 7 and conveyed to the sampling tray 8 for storage.

[0035] In some embodiments, the sampling driving device 2 includes a sampling driving motor 21, a sampling driving lead screw 22, a first sampling driving slider 23, and a second sampling driving slider 24. The sampling driving motor 21 is fixedly arranged on the sampling mounting frame 1. The sampling driving lead screw 22 is rotatably arranged on the sampling mounting frame 1 and is in transmission connection with the sampling driving motor 21. Threaded teeth with opposite spiral directions are arranged on both sides of the sampling driving lead screw 22. The first sampling driving slider 23 and the second sampling driving slider 24 are slidably arranged on the sampling mounting frame 1 in parallel. The first sampling driving slider 23 and the second sampling driving slider 24 are provided with threaded grooves that fit the threaded teeth on both sides of the sampling driving lead screw 22. Rotating the sampling driving lead screw 22 synchronously drives the first sampling driving slider 23 and the second sampling driving slider 24 on both sides to move towards or away from each other simultaneously. The first sampling driving slider 23 is in transmission connection with the first sampling connecting rod 3, and the second sampling driving slider 24 is in transmission connection with the second sampling connecting rod 4.

[0036] In some embodiments, the sampling driving device 2 further includes a first driving hinge block 25 and a second driving hinge block 26. The lower end of the first driving hinge block 25 is hinged to the upper end of the first sampling connecting rod 3. The lower end of the second driving hinge block 26 is hinged to the upper end of the second sampling connecting rod 4. A first driving hinge connecting rod 251 is arranged between the first driving hinge block 25 and the first sampling driving slider 23. Both ends of the first driving hinge connecting rod 251 are respectively hinged to the first driving hinge block 25 and the first sampling driving slider 23. A second driving hinge connecting rod 261 is arranged between the second driving hinge block 26 and the second sampling driving slider 24. Both ends of the second driving hinge connecting rod 261 are respectively hinged to the second driving hinge block 26 and the second sampling driving slider 24, so as to ensure the cooperation stability between the first sampling connecting rod 3 and the second sampling connecting rod 4 when moving with the sampling driving device 2.

[0037] In some embodiments, driving limiting sliding grooves are arranged on the outer side walls of the first sampling driving slider 23 and the second sampling driving slider 24. Driving limiting sliding blocks that fit the driving limiting sliding grooves are arranged on the sampling mounting frame 1, so as to limit the sliding directions of the first sampling driving slider 23 and the second sampling driving slider 24, and enable the first sampling driving slider 23 and the second sampling driving slider 24 to move in parallel.

[0038] In some embodiments, sliding grooves 11 that fit the first sampling driving slider 23 and the second sampling driving slider 24 are arranged on the sampling mounting frame 1. The first sampling driving slider 23 and the second sampling driving slider 24 slide in the sliding grooves 11, so as to further limit the sliding directions of the first sampling driving slider 23 and the second sampling driving slider 24.

[0039] In some embodiments, the sampling mechanism 7 includes a sampling sleeve 71, a sampling motor 72, a sampling rotating shaft 73, and a driving auger 74. The sampling sleeve 71 is slidably disposed on the sampling mounting frame 1. The lower ends of the first sampling push rod 5 and the second sampling push rod 6 are respectively hinged to the outer ends of the sampling sleeve 71. The driving auger 74 is rotatably disposed inside the sampling sleeve 71. The sampling rotating shaft 73 is in transmission connection with the driving auger 74, and the sampling motor 72 is in transmission connection with the sampling rotating shaft 73. By driving the driving auger 74 to rotate through the sampling motor 72, sampling operation can be performed on the coal material in the coal flow, and the rotation speed of the driving auger 74 can control the feeding speed of the coal material.

[0040] In some embodiments, the sampling rotating shaft 73 includes a rotating shaft outer cylinder 731 and a rotating shaft inner rod 732. The rotating shaft outer cylinder 731 is rotatably disposed on the sampling mounting frame 1. The rotating shaft inner rod 732 is slidably disposed inside the rotating shaft outer cylinder 731. The lower end of the rotating shaft inner rod 732 is in transmission connection with the driving auger 74, and the upper end of the rotating shaft outer cylinder 731 is in transmission connection with the sampling motor 72. The rotating shaft outer cylinder 731 drives the rotating shaft inner rod 732 to rotate, thereby being able to fix the sampling motor 72 and ensuring the cooperation stability between the sampling motor 72 and the driving auger 74.

[0041] In some embodiments, the sampling disc 8 is on the same axis as the sampling sleeve 71. A sampling hole 711 is provided on the side wall of the sampling sleeve 71, and the sampling hole 711 communicates with the upper end surface of the sampling disc 8. The coal material inside the sampling sleeve 71 can flow through the sampling hole 711 to the sampling disc 8.

[0042] In some embodiments, a plurality of sampling holes 711 are provided. The plurality of sampling holes 711 are circumferentially arranged on the side wall of the sampling sleeve 71, and the setting heights of the sampling holes 711 in different directions are different. The sampling disc 8 is provided with partition grooves having the same number as the sampling holes 711. The partition grooves in different directions communicate with the corresponding sampling holes 711 in the corresponding directions, thereby being able to separately store coal materials at different depths according to the insertion position of the sampling sleeve 71. Part of the coal material will fall back into the coal flow through the sampling holes 711 at relatively lower positions. Therefore, it is necessary to maintain the rotation speed of the driving auger 74 to guide the coal material, so as to ensure that the coal material can enter the corresponding partition grooves.

[0043] In some embodiments, the sampling disc 8 is arranged in a shape like a bamboo hat. The middle part of the sampling disc 8 is at a relatively upper position. The upper end surface of the sampling disc 8 forms a cavity capable of accommodating samples. The coal material falling into the sampling disc 8 will slide to the outer side of the sampling disc 8 under the action of gravity, which is convenient for the staff to collect the taken samples.

[0044] When the present solution is in use, the sampling drive device 2 is started according to the current state of the coal flow and the test requirements, and the sampling drive motor 21 rotates to drive the sampling drive screw 22 to run, and the first sampling drive slider 23 and the second sampling drive slider 24 on both sides are synchronously driven to move inward through the operation of the sampling drive screw 22. The first sampling drive slider 23 and the second sampling drive slider 24 move inward while driving the first drive hinge block 25 and the second drive hinge block 26 to move inward, and the upper end surfaces of the first sampling connecting rod 3 and the second sampling connecting rod 4 on both sides are driven to rotate toward each other through the first drive hinge block 25 and the second drive hinge block 26. At this time, the lower end surfaces of the first sampling connecting rod 3 and the second sampling connecting rod 4 rotate toward each other, thereby driving the first sampling push rod 5 and the second sampling push rod 6 on both sides to move synchronously, and the first sampling push rod 5 and the second sampling push rod 6 are driven to move synchronously through the first sampling push rod 5 and the second sampling The pushing rod 6 moves relatively to drive the sampling sleeve 71 to move downward, and the sampling sleeve 71 is inserted into the inner side of the coal flow. The downward movement of the sampling sleeve 71 drives the inner rod 732 of the rotating shaft to descend synchronously, maintaining the transmission force of the sampling motor 72 and the driving auger 74. When the sampling sleeve 71 moves to the appropriate position, the sampling motor 72 is started to drive the driving auger 74 to rotate, guiding the coal in the coal flow to move to the inner side of the sampling sleeve 71. At this time, the coal will enter the corresponding separation groove through the sampling hole 711 of the corresponding height. During the operation of the equipment, the height of the coal entering the sampling sleeve 71 can be controlled by controlling the rotation speed of the sampling motor 72. After the sampling is completed, the sampling motor 72 flips to release the material in the sampling sleeve 71 to facilitate the accuracy of the sample during subsequent operation, and then resets the first sampling connecting rod 3 and the second sampling connecting rod 4 to wait for the next sampling operation.

[0045] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. Double-link adaptive coal flow sampler, characterized in that: The invention comprises a sampling mounting frame (1), a sampling driving device (2), a first sampling connecting rod (3), a second sampling connecting rod (4), a first sampling pushing rod (5), a second sampling pushing rod (6), a sampling mechanism (7) and a sampling disk (8), wherein the first sampling connecting rod (3) and the second sampling connecting rod (4) are arranged crosswise on the sampling mounting frame (1), the first sampling connecting rod (3) and the second sampling connecting rod (4) are hinged to each other, the hinge axis of the first sampling connecting rod (3) and the second sampling connecting rod (4) is fixedly arranged on the sampling mounting frame (1), the sampling driving device (2) is arranged on the sampling mounting frame (1) and drives the first sampling connecting rod (3) and the second sampling connecting rod (4) to move respectively. On the upper side of the sampling connecting rod (4), the sampling driving device (2) drives the first sampling connecting rod (3) and the second sampling connecting rod (4) to rotate along the hinge axis, one end of the first sampling pushing rod (5) is hingedly arranged on the lower side of the first sampling connecting rod (3), and one end of the second sampling pushing rod (6) is hingedly arranged on the lower side of the second sampling connecting rod (4), the sampling mechanism (7) is vertically slidably arranged on the sampling mounting frame (1), the lower sides of the first sampling pushing rod (5) and the second sampling pushing rod (6) are respectively hingedly connected to the sampling mechanism (7), and the sampling disk (8) is arranged on the sampling mounting frame (1) and is connected to the sampling mechanism (7).

2. The double-link adaptive coal flow sampling machine according to claim 1 is characterized in that: The sampling drive device (2) comprises a sampling drive motor (21), a sampling drive lead screw (22), a first sampling drive slider (23) and a second sampling drive slider (24); the sampling drive motor (21) is fixedly mounted on the sampling mounting frame (1); the sampling drive lead screw (22) is rotatably mounted on the sampling mounting frame (1) and is transmission-connected to the sampling drive motor (21); two sides of the sampling drive lead screw (22) are provided with thread teeth with opposite spiral directions; the first sampling drive slider (23) and the second sampling drive slider (24) are The first sampling drive slider (23) and the second sampling drive slider (24) are arranged on the sampling mounting frame (1) in parallel with each other, and the first sampling drive slider (23) and the second sampling drive slider (24) are provided with thread grooves that fit with the thread teeth on both sides of the sampling drive screw (22). The first sampling drive slider (23) and the second sampling drive slider (24) on both sides are synchronously driven to move towards or in opposite directions at the same time. The first sampling drive slider (23) is connected to the first sampling connecting rod (3) by transmission, and the second sampling drive slider (24) is connected to the second sampling connecting rod (4) by transmission.

3. The double-link adaptive coal flow sampling machine according to claim 2 is characterized in that: The sampling drive device (2) further comprises a first driving hinge block (25) and a second driving hinge block (26), wherein the lower end of the first driving hinge block (25) is hinged to the upper end of the first sampling link (3), and the lower end of the second driving hinge block (26) is hinged to the upper end of the second sampling link (4). A first driving hinge link (251) is arranged between the first driving hinge block (25) and the first sampling driving slider (23), and the two ends of the first driving hinge link (251) are respectively hinged to the first driving hinge block (25) and the first sampling driving slider (23). A second driving hinge link (261) is arranged between the second driving hinge block (26) and the second sampling driving slider (24), and the two ends of the second driving hinge link (261) are respectively hinged to the second driving hinge block (26) and the second sampling driving slider (24).

4. The double-link adaptive coal flow sampling machine according to claim 2 is characterized in that: The outer side walls of the first sampling driving slider (23) and the second sampling driving slider (24) are provided with driving limiting sliding grooves (231), and the sampling mounting frame (1) is provided with driving limiting sliding grooves that fit in with the driving limiting sliding grooves (231).

5. The double-link adaptive coal flow sampling machine according to claim 2 is characterized in that: The sampling mounting frame (1) is provided with a sliding groove (11) which fits with the first sampling driving slider (23) and the second sampling driving slider (24); the first sampling driving slider (23) and the second sampling driving slider (24) slide in the sliding groove (11).

6. The double-link adaptive coal flow sampling machine according to claim 1 is characterized in that: The sampling mechanism (7) comprises a sampling sleeve (71), a sampling motor (72), a sampling shaft (73) and a driving auger (74); the sampling sleeve (71) is slidably arranged on the sampling mounting frame (1); the lower ends of the first sampling push rod (5) and the second sampling push rod (6) are respectively hinged to the outer ends of the sampling sleeve (71); the driving auger (74) is rotatably arranged on the inner side of the sampling sleeve (71); the sampling shaft (73) is drivingly connected to the driving auger (74); and the sampling motor (72) is drivingly connected to the sampling shaft (73).

7. The double-link adaptive coal flow sampling machine according to claim 6 is characterized in that: The sampling rotating shaft (73) comprises an outer rotating shaft cylinder (731) and an inner rotating shaft rod (732); the outer rotating shaft cylinder (731) is rotatably arranged on the sampling mounting frame (1); the inner rotating shaft rod (732) is slidably arranged in the outer rotating shaft cylinder (731); the lower end of the inner rotating shaft rod (732) is transmission-connected to the driving auger (74); the upper end of the outer rotating shaft cylinder (731) is transmission-connected to the sampling motor (72); the outer rotating shaft cylinder (731) drives the inner rotating shaft rod (732) to rotate.

8. The double-link adaptive coal flow sampling machine according to claim 6, characterized in that: The sampling disk (8) and the sampling sleeve (71) are located on the same axis. The side wall of the sampling sleeve (71) is provided with a sampling hole (711), and the sampling hole (711) is communicated with the upper end surface of the sampling disk (8).

9. The double-link adaptive coal flow sampling machine according to claim 8, characterized in that: A plurality of sampling holes (711) are provided, and the plurality of sampling holes (711) are arranged around the side wall of the sampling sleeve (71), and the sampling holes (711) in different directions are arranged at different heights, and the sampling plate (8) is provided with separation grooves having the same number as the sampling holes (711), and the separation grooves in different directions are connected to the sampling holes (711) in the corresponding directions.

10. The double-link adaptive coal flow sampling machine according to claim 8, characterized in that: The sampling plate (8) is arranged in a conical shape, the middle part of the sampling plate (8) is located at an upper position, and the upper end surface of the sampling plate (8) forms a cavity capable of accommodating a sample.

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