Double-link self-adapting coal flow sampler

Abstract

The present application relates to the technical field of sampling machine equipment, especially 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, the first sampling connecting rod and the second sampling connecting rod are hingedly connected to each other, the hinged shafts of the first sampling connecting rod and 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 side of the first sampling connecting rod and the second sampling connecting rod respectively, one end of the second sampling pushing rod is hingedly arranged on the lower side of the second sampling connecting rod, the sampling mechanism is vertically slidably arranged on the sampling mounting frame, the lower sides of the first sampling pushing rod and the second sampling pushing rod are respectively hingedly connected to the sampling mechanism, and the sampling disc is arranged on the sampling mounting frame and communicates with the sampling mechanism, so that the coal flow sampling can be self-adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sampling machine equipment, in particular to a double-connecting-rod self-adaptive coal flow sampling machine. BACKGROUND

[0002] The composition of coal is determined by the use requirements. In order to achieve better use effect, various treatments of coal are collectively referred to as coal processing. The contents of coal processing include coal preheating, coal oil mixing, coal crushing, and coal mixing. Reasonable crushing of coal can improve the mechanical strength of coke; uniform coal can improve the accuracy of coal blending and minimize the fluctuation of coal quality, so as to stabilize the chemical composition and physical and mechanical properties of coke, and stabilize the quality of coke. In the transportation process of coal, it is necessary to transport the coal after crushing and carry out subsequent processing according to the processing requirements. However, because the impurity content in different batches of coal is different, it is necessary to sample and detect the coal flow in the transportation process. The coal sampling equipment in the prior art has low automation degree and cannot realize self-adaptive coal sampling. SUMMARY

[0003] In order to solve the problem of low automation degree of the coal sampling equipment, the present application provides a double-connecting-rod self-adaptive coal flow sampling machine, and the specific technical scheme is as follows:

[0004] The double-connecting-rod self-adaptive coal flow sampling machine 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. The first sampling connecting rod and the second sampling connecting rod are arranged in a crisscross manner on the sampling mounting frame. The first sampling connecting rod and the second sampling connecting rod are hingedly connected to each other. The hinge shafts of the first sampling connecting rod and 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 side of the first sampling connecting rod and the second sampling connecting rod. The sampling driving device drives the first sampling connecting rod and the second sampling connecting rod to rotate along the hinge shafts. One end of the first sampling pushing rod is hingedly arranged on the lower side of the first sampling connecting rod. One end of the second sampling pushing rod is hingedly arranged on the lower side of the second sampling connecting rod. The sampling mechanism is vertically slidably arranged on the sampling mounting frame. The lower sides of the first sampling pushing rod and the second sampling pushing rod are respectively hingedly connected to the sampling mechanism. The sampling disc is arranged on the sampling mounting frame and communicates with the sampling mechanism.

[0005] In some embodiments, the sampling driving device comprises a sampling driving motor, a sampling driving 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 screw is rotatably arranged on the sampling mounting frame and is in transmission connection with the sampling driving motor, the sampling driving screw is provided with thread teeth with opposite screw directions on both sides, the first sampling driving slider and the second sampling driving slider are slidably arranged on the sampling mounting frame in parallel to each other, the first sampling driving slider and the second sampling driving slider are provided with thread grooves which are in engagement with the thread teeth on both sides of the sampling driving screw, and rotation of the sampling driving screw synchronously drives the first sampling driving slider and the second sampling driving slider on both sides to move towards each other or in opposite directions, 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 comprises a first driving hinged block and a second driving hinged block, the lower end of the first driving hinged block is hingedly connected with the upper end of the first sampling connecting rod, the lower end of the second driving hinged block is hingedly connected with the upper end of the second sampling connecting rod, a first driving hinged connecting rod is arranged between the first driving hinged block and the first sampling driving slider, both ends of the first driving hinged connecting rod are hingedly arranged on the first driving hinged block and the first sampling driving slider respectively, and a second driving hinged connecting rod is arranged between the second driving hinged block and the second sampling driving slider, both ends of the second driving hinged connecting rod are hingedly arranged on the second driving hinged block and the second sampling driving slider respectively.

[0007] In some embodiments, the outer side wall of the first sampling driving slider and the second sampling driving slider is provided with a driving limiting sliding groove, and the sampling mounting frame is provided with a driving limiting sliding block which is in engagement with the driving limiting sliding groove.

[0008] In some embodiments, the sampling mounting frame is provided with a sliding groove which is in engagement with the first sampling driving slider and the second sampling driving slider, and the first sampling driving slider and the second sampling driving slider slide in the sliding groove.

[0009] In some embodiments, the sampling mechanism comprises 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 end of the first sampling pushing rod and the second sampling pushing rod is respectively hingedly connected to the outer side end of the sampling sleeve, the driving auger is rotatably arranged in the inside of 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 comprises a rotating shaft outer cylinder and a rotating shaft inner rod, the rotating shaft outer cylinder is rotationally arranged on the sampling mounting frame, the rotating shaft inner rod is slidingly arranged in the rotating shaft outer cylinder, the lower end of the rotating shaft inner rod is drivingly connected with the driving auger, and the upper end of the rotating shaft outer cylinder is drivingly connected with the sampling motor.

[0011] In some embodiments, the sampling disc is coaxial with the sampling sleeve, the side wall of the sampling sleeve is provided with sampling holes, and the sampling holes are in communication with the upper end surface of the sampling disc.

[0012] In some embodiments, the sampling holes are provided in a plurality of groups, the sampling holes in different directions are provided at different heights, and the sampling disc is provided with a plurality of separation grooves corresponding to the sampling holes.

[0013] In some embodiments, the sampling disc is provided in a conical shape, the middle part of the sampling disc is arranged at an upper position, and the upper end surface of the sampling disc forms a cavity for accommodating the sample.

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

[0015] Firstly, the first sampling connecting rod and the second sampling connecting rod are driven by the sampling driving device, the sampling mechanism is moved downward into the coal flow through the cooperation of the first sampling connecting rod, the second sampling connecting rod, the first sampling pushing rod and the second sampling pushing rod, the sample is collected by the sampling mechanism and transported into the sampling disc for storage, so that the coal sampling is realized.

[0016] Secondly, the sampling sleeve is driven to move downward by the relative movement of the first sampling pushing rod and the second sampling pushing rod, the sampling sleeve is inserted into the inside of the coal flow, the sampling sleeve is moved downward to drive the rotating shaft inner rod to synchronously descend, the transmission force between the sampling motor and the driving auger is maintained, the driving auger is rotated by the sampling motor after the sampling sleeve is moved to the appropriate position, the coal in the coal flow is guided to move into the inside of the sampling sleeve, at this time, the coal enters into the corresponding separation groove through the corresponding height sampling hole, during the operation of the equipment, the height of the coal entering into the sampling sleeve can be controlled by controlling the rotation speed of the sampling motor, after the sampling is completed, the sampling motor is reversed to discharge the material in the sampling sleeve so as to ensure the accuracy of the sample in the subsequent operation.

[0017] Thirdly, the sampling rotating shaft in the scheme comprises a rotating shaft outer cylinder and a rotating shaft inner rod, the rotating shaft outer cylinder is rotationally arranged on the sampling mounting frame, the rotating shaft inner rod is slidingly arranged in the rotating shaft outer cylinder, the lower end of the rotating shaft inner rod is in transmission connection with the driving auger, and the upper end of the rotating shaft outer cylinder is in transmission connection with the sampling motor. The rotating shaft outer cylinder drives the rotating shaft inner rod to rotate, so that the sampling motor can be fixed, and the cooperation stability of the sampling motor and the driving auger is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the double-link self-adaptive coal flow sampling machine;

[0019] Figure 2 is a schematic diagram of the use state of the double-link self-adaptive coal flow sampling machine Figure One ;

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

[0021] Figure 4 is a schematic diagram of the use state of the double-link self-adaptive coal flow sampling machine Figure Two ;

[0022] Figure 5 is a schematic diagram of the use state of the sampling mechanism in the double-link self-adaptive coal flow sampling machine Figure One ;

[0023] Figure 6 is a schematic diagram of the use state of the sampling mechanism in the double-link self-adaptive coal flow sampling machine Figure Two ;

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

[0025] Figure 8 is Figure 1 an enlarged schematic diagram of position A in FIG. 8.

[0026] Fig. 8 is a schematic diagram of the overall structure of the double-link self-adaptive coal flow sampling machine; Fig. 9 is a schematic diagram of the use state of the double-link self-adaptive coal flow sampling machine; Fig. 10 is a schematic diagram of the structure of the sampling driving device in the double-link self-adaptive coal flow sampling machine; Fig. 11 is a schematic diagram of the use state of the double-link self-adaptive coal flow sampling machine; Fig. 12 is a schematic diagram of the use state of the sampling mechanism in the double-link self-adaptive coal flow sampling machine; Fig. 13 is a schematic diagram of the use state of the sampling mechanism in the double-link self-adaptive coal flow sampling machine; Fig. 14 is a schematic diagram of the structure of the sampling disc part in the double-link self-adaptive coal flow sampling machine; Fig. 15 is an enlarged schematic diagram of position A in FIG. 8. DETAILED DESCRIPTION

[0027] The embodiments of the present disclosure will be described in further detail below with reference to the drawings and examples. The following detailed description of the examples and the accompanying drawings are provided for the purpose of illustrating the principles of the present disclosure, and are not intended to limit the scope of the present disclosure, which can be embodied in a variety of different forms, not limited to the specific examples disclosed herein, but include all technical solutions falling within the scope of the claims.

[0028] The present disclosure provides these examples in order to make the present disclosure more 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 specified, the relative arrangement of components and steps, the components of materials, numerical expressions and values set forth in these examples should be interpreted as merely exemplary, and not as a limitation.

[0029] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] In addition, "first", "second", and similar words used in the present disclosure do not indicate any order, number, or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, 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 specified and limited, the terms "mounting", "connecting", "connection" should be interpreted broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. When it is described that a specific device is located between a first device and a second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0032] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0034] like Figures 1 to 8 As shown, a double-link adaptive coal flow sampler includes a sampling mounting frame 1, a sampling drive 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 disk 8. The first sampling link 3 and the second sampling link 4 are cross-arranged on the sampling mounting frame 1. The first sampling link 3 and the second sampling link 4 are hinged to each other. The hinge axis of the first sampling link 3 and the second sampling link 4 is fixedly arranged on the sampling mounting frame 1. The sampling drive device 2 is arranged on the sampling mounting frame 1 and drives the upper side of the first sampling link 3 and the second sampling link 4 respectively. The sampling drive device 2 drives the first sampling link 3 and the second sampling link 4 to rotate along the hinge axis. One end of 5 is hingedly set on the lower side of the first sampling link 3, and one end of the second sampling push rod 6 is hingedly set on the lower side of the second sampling link 4. The sampling mechanism 7 is slidably set on the sampling mounting frame 1 in the vertical direction. 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 disk 8 is set on the sampling mounting frame 1 and is connected to the sampling mechanism 7. The first sampling link 3 and the second sampling link 4 are driven by the sampling drive device 2, and the first sampling link 3, the second sampling link 4, the first sampling push rod 5 and the second sampling push rod 6 cooperate with each other to push the sampling mechanism 7 downward into the coal flow, and then the sample is collected by the sampling mechanism 7 and transported to the sampling disk 8 for storage.

[0035] In some embodiments, the sampling driving device 2 comprises a sampling driving motor 21, a sampling driving 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 screw 22 is rotationally arranged on the sampling mounting frame 1 and is in transmission connection with the sampling driving motor 21, the sampling driving screw 22 is provided with thread teeth with opposite screw directions on both sides, the first sampling driving slider 23 and the second sampling driving slider 24 are slidably arranged on the sampling mounting frame 1 in parallel with each other, the first sampling driving slider 23 and the second sampling driving slider 24 are provided with thread grooves that are engaged with the thread teeth on both sides of the sampling driving screw 22, and rotating the sampling driving screw 22 synchronously drives the first sampling driving slider 23 and the second sampling driving slider 24 on both sides to move towards each other or in opposite directions, 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 comprises a first driving hinged block 25 and a second driving hinged block 26, the lower end of the first driving hinged block 25 is hingedly connected with the upper end of the first sampling connecting rod 3, the lower end of the second driving hinged block 26 is hingedly connected with the upper end of the second sampling connecting rod 4, a first driving hinged connecting rod 251 is arranged between the first driving hinged block 25 and the first sampling driving slider 23, both ends of the first driving hinged connecting rod 251 are hingedly arranged on the first driving hinged block 25 and the first sampling driving slider 23 respectively, a second driving hinged connecting rod 261 is arranged between the second driving hinged block 26 and the second sampling driving slider 24, both ends of the second driving hinged connecting rod 261 are hingedly arranged on the second driving hinged block 26 and the second sampling driving slider 24 respectively, so as to ensure the stability of the first sampling connecting rod 3 and the second sampling connecting rod 4 in cooperation with the sampling driving device 2 when moving.

[0037] In some embodiments, the outer side wall of the first sampling driving slider 23 and the second sampling driving slider 24 is provided with a driving limiting sliding groove, the sampling mounting frame 1 is provided with a driving limiting sliding block that is engaged with the driving limiting sliding groove, so as to limit the sliding direction 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 with each other.

[0038] In some embodiments, the sampling mounting frame 1 is provided with a sliding groove 11 that is engaged with the first sampling driving slider 23 and the second sampling driving slider 24, and the first sampling driving slider 23 and the second sampling driving slider 24 slide in the sliding groove 11, so as to further limit the sliding direction of the first sampling driving slider 23 and the second sampling driving slider 24.

[0039] In some embodiments, the sampling mechanism 7 comprises a sampling sleeve 71, a sampling motor 72, a sampling rotating shaft 73, and a driving auger 74, the sampling sleeve 71 is slidingly 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 side ends of the sampling sleeve 71, the driving auger 74 is rotationally arranged inside the sampling sleeve 71, the sampling rotating shaft 73 is in driving connection with the driving auger 74, the sampling motor 72 is in driving connection with the sampling rotating shaft 73, the driving auger 74 is rotated by the sampling motor 72 to perform the sampling operation on the coal in the coal flow, and the rotation speed of the driving auger 74 can control the feeding speed of the coal.

[0040] In some embodiments, the sampling rotating shaft 73 comprises a rotating shaft outer cylinder 731 and a rotating shaft inner rod 732, the rotating shaft outer cylinder 731 is rotationally arranged on the sampling mounting frame 1, and the rotating shaft inner rod 732 is slidingly arranged inside the rotating shaft outer cylinder 731, the lower end of the rotating shaft inner rod 732 is in driving connection with the driving auger 74, and the upper end of the rotating shaft outer cylinder 731 is in driving connection with the sampling motor 72, the rotating shaft outer cylinder 731 drives the rotating shaft inner rod 732 to rotate, so as to fix the sampling motor 72, thereby ensuring the stability of the cooperation 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, the side wall of the sampling sleeve 71 is provided with a sampling hole 711, the sampling hole 711 is in communication with the upper end surface of the sampling disc 8, and the coal in the sampling sleeve 71 can flow to the sampling disc 8 through the sampling hole 711.

[0042] In some embodiments, the sampling hole 711 is provided with a plurality of sampling holes 711, a plurality of sampling holes 711 are arranged on the side wall of the sampling sleeve 71, and the sampling holes 711 in different directions are arranged at different heights, the sampling disc 8 is provided with a plurality of separation grooves corresponding to the number of sampling holes 711, and the separation grooves in different directions are in communication with the sampling holes 711 in the corresponding directions, so as to separately store the coal at different depths according to the insertion position of the sampling sleeve 71, part of the coal will fall back into the coal flow through the sampling hole 711 at the relatively lower position, and therefore it is necessary to maintain the rotation speed of the driving auger 74 to guide the coal, thereby ensuring that the coal can enter the corresponding separation groove.

[0043] In some embodiments, the sampling disc 8 is arranged in a conical shape, the middle part of the sampling disc 8 is arranged at an upper position, the upper end surface of the sampling disc 8 forms a cavity capable of accommodating the sample, and the coal falling into the sampling disc 8 will slide to the outer side of the sampling disc 8 under the action of gravity, so as to facilitate the collection of the removed sample by the staff.

[0044] In use, according to the current state of the coal flow and test requirements, the sampling driving device 2 is started, the sampling driving motor 21 rotates to drive the sampling driving lead screw 22 to run, the first sampling driving block 23 and the second sampling driving block 24 on both sides are synchronously driven to move inward by the sampling driving lead screw 22, the first driving hinged block 25 and the second driving hinged block 26 are moved inward at the same time as the first sampling driving block 23 and the second sampling driving block 24 move inward, the upper end surfaces of the first sampling connecting rod 3 and the second sampling connecting rod 4 on both sides are rotated towards each other by the first driving hinged block 25 and the second driving hinged block 26, at this time, the lower end surfaces of the first sampling connecting rod 3 and the second sampling connecting rod 4 are rotated towards each other, thereby synchronously moving the first sampling pushing rod 5 and the second sampling pushing rod 6 on both sides, the sampling sleeve 71 is driven downward by the relative movement of the first sampling pushing rod 5 and the second sampling pushing rod 6, the sampling sleeve 71 is inserted into the inside of the coal flow, the sampling sleeve 71 is moved downward to synchronously lower the rotating shaft inner rod 732, the transmission force between the sampling motor 72 and the driving auger 74 is maintained, after the sampling sleeve 71 is moved 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 inside 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 sampling, the sampling motor 72 is reversed to discharge the material in the sampling sleeve 71 to ensure the accuracy of the sample in subsequent operation, and then the first sampling connecting rod 3 and the second sampling connecting rod 4 are reset to wait for the next sampling operation.

[0045] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these embodiments will fall within the scope of protection of the claims of the present application.

Claims

1. A dual-link self-adapting coal flow sampler, characterized in that, The utility model relates to a sampling device, including sampling mounting bracket (1), sampling drive arrangement (2), first sampling connecting rod (3), second sampling connecting rod (4), first sampling push rod (5), second sampling push rod (6), sampling mechanism (7) and sampling disc (8), first sampling connecting rod (3) and second sampling connecting rod (4) are set up on sampling mounting bracket (1) and cross each other, first sampling connecting rod (3) and second sampling connecting rod (4) are hinged, and the hinge shaft of first sampling connecting rod (3) and second sampling connecting rod (4) is fixedly arranged on sampling mounting bracket (1), sampling drive arrangement (2) is arranged on sampling mounting bracket (1) and is respectively driven first sampling connecting rod (3) and the upper side of second sampling connecting rod (4), and sampling drive arrangement (2) drives first sampling connecting rod (3) and second sampling connecting rod (4) to rotate along the hinge shaft, one end of first sampling push rod (5) is hingedly arranged on the lower side of first sampling connecting rod (3), one end of second sampling push rod (6) is hingedly arranged on the lower side of second sampling connecting rod (4), sampling mechanism (7) is vertically slidably arranged on sampling mounting bracket (1), and the lower side of first sampling push rod (5) and second sampling push rod (6) is respectively hinged to sampling mechanism (7), and sampling disc (8) is arranged on sampling mounting bracket (1) and communicates with sampling mechanism (7); Sampling drive arrangement (2) includes sampling drive motor (21), sampling drive screw (22), first sampling drive sliding block (23) and second sampling drive sliding block (24), sampling drive motor (21) is fixedly arranged on sampling mounting bracket (1), sampling drive screw (22) is rotatably arranged on sampling mounting bracket (1) and is drivenly connected with sampling drive motor (21), the both sides of sampling drive screw (22) are provided with the thread teeth of opposite screw directions, first sampling drive sliding block (23) and second sampling drive sliding block (24) are slidably arranged on sampling mounting bracket (1) and parallel to each other, first sampling drive sliding block (23) and second sampling drive sliding block (24) are provided with the thread groove that mutually fits with the thread teeth of both sides of sampling drive screw (22), and rotating sampling drive screw (22) simultaneously drives the first sampling drive sliding block (23) and the second sampling drive sliding block (24) of both sides to move towards each other or reversely, first sampling drive sliding block (23) is drivenly connected with first sampling connecting rod (3), and second sampling drive sliding block (24) is drivenly connected with second sampling connecting rod (4). The sampling driving device (2) further comprises a first driving hinge block (25) and a second driving hinge block (26), the lower end of the first driving hinge block (25) is hingedly connected with the upper end of the first sampling connecting rod (3), the lower end of the second driving hinge block (26) is hingedly connected with 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 sliding block (23), the two ends of the first driving hinge connecting rod (251) are respectively hingedly arranged on the first driving hinge block (25) and the first sampling driving sliding block (23), and a second driving hinge connecting rod (261) is arranged between the second driving hinge block (26) and the second sampling driving sliding block (24), the two ends of the second driving hinge connecting rod (261) are respectively hingedly arranged on the second driving hinge block (26) and the second sampling driving sliding block (24).

2. The dual-link self-adapting coal flow sampler according to claim 1, wherein, The outer side wall of the first sampling driving sliding block (23) and the second sampling driving sliding block (24) is provided with a driving limiting sliding groove (231), and the sampling mounting rack (1) is provided with a driving limiting sliding block matched with the driving limiting sliding groove (231).

3. The dual-link self-adapting coal flow sampler according to claim 1, wherein, The sampling mounting rack (1) is provided with a sliding groove (11) matched with the first sampling driving sliding block (23) and the second sampling driving sliding block (24), and the first sampling driving sliding block (23) and the second sampling driving sliding block (24) slide in the sliding groove (11).

4. The dual-link self-adapting coal flow sampler of claim 1, wherein, The sampling mechanism (7) comprises a sampling sleeve (71), a sampling motor (72), a sampling rotating shaft (73) and a driving auger (74), the sampling sleeve (71) is slidingly arranged on the sampling mounting rack (1), the lower ends of the first sampling pushing rod (5) and the second sampling pushing rod (6) are respectively hingedly connected to the outer side ends of the sampling sleeve (71), the driving auger (74) is rotationally arranged in the inner side of 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).

5. The dual-link self-adapting coal flow sampler according to claim 4, wherein, The sampling rotating shaft (73) comprises a rotating shaft outer cylinder (731) and a rotating shaft inner rod (732), the rotating shaft outer cylinder (731) is rotationally arranged on the sampling mounting rack (1), the rotating shaft inner rod (732) is slidingly arranged in 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), the upper end of the rotating shaft outer cylinder (731) is in transmission connection with the sampling motor (72), and the rotating shaft outer cylinder (731) drives the rotating shaft inner rod (732) to rotate.

6. The dual-link self-adapting coal flow sampler according to claim 4, wherein, The sampling disc (8) is on the same axis as the sampling sleeve (71), the side wall of the sampling sleeve (71) is provided with a sampling hole (711), and the sampling hole (711) is in communication with the upper end surface of the sampling disc (8).

7. The dual-link self-adapting coal flow sampler according to claim 6, wherein, The sampling holes (711) are arranged in a plurality of groups, and the groups of sampling holes (711) are arranged on the side wall of the sampling sleeve (71) in different directions, and the sampling holes (711) in different directions are arranged at different heights.

8. The dual-link self-adapting coal flow sampler according to claim 6, wherein, The sampling disc (8) is arranged in a conical shape, and the middle part of the sampling disc (8) is arranged in an upper position, and the upper end surface of the sampling disc (8) forms a cavity capable of accommodating a sample.

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