A sampling device for coal bottom contact entering the plant
By introducing a detection unit and a linkage adjustment unit into the coal sampling device in the factory, the problems of incomplete sampling and low process automation are solved, safe and efficient sampling and sample processing are achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202411585617.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2044-11-08
AI Technical Summary
The existing coal sampling device entering the factory is difficult to effectively control the distance between the bottom of the sampling barrel and the bottom wall of the car during the sampling process, resulting in incomplete sampling or damage to the bottom wall of the car. The process of sampling, crushing, screening and shrinking samples is low, which increases production costs.
A sample preparation device for bottoming coal entering the factory is designed, and a detection unit is used to detect the distance between the bottom of the sampling barrel and the bottom wall of the car, and crush and screen through the combination of the swing barrel and the extrusion hammer. Combined with the linkage adjustment unit, the synchronous processing of crushing, screening and shrinking samples is achieved.
It effectively avoids the problems of inadequate sampling or damage to the bottom wall of the car, improves the representativeness and safety of sampling, and reduces production costs and processing process requirements through the combination of processes.
Smart Images
Figure CN119086159B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of incoming coal detection, in particular to a device for sampling incoming coal when it touches the bottom. Background Art
[0002] Incoming coal refers to coal that is transported to thermal power plants by means of transportation. This term is mainly used in the power industry, especially in the process of fuel management and power production. The sampling, sample preparation, testing and quality control of incoming coal are of great significance to ensure the safe, stable operation and economic benefits of thermal power plants.
[0003] When sampling the incoming coal, the existing sampling and preparation device usually determines the sampling position under the action of the trolley walking mechanism and the trolley walking mechanism, and then samples it through a liftable sampling tube installed on the trolley walking mechanism (a rotatable spiral sampling shaft is provided in the sampling tube and slightly extends below the bottom surface of the sampling tube, and the sampling tube is inserted into the coal seam). After the sampling is completed, the sample is taken to the sample preparation room for crushing and screening in sequence, and then the screened sample is placed in a material trough, and finally the sample in the material trough is poured into a reducer (at this time, the material trough needs to be swung left and right on the upper part of the reducer to ensure the uniformity of the sample poured into the reducer) to complete the sample reduction.
[0004] During the above operation, when the sampling tube descends and is inserted to the bottom of the coal seam for full-depth sampling, the distance between the bottom of the sampling tube and the bottom wall of the carriage cannot be effectively controlled, which may result in the phenomenon that the bottom cannot be sampled or the bottom of the rotating spiral sampling shaft damages the bottom wall of the carriage, affecting the representativeness and safety of the sampling; and the processing of crushing, screening and shrinking samples is carried out in three independent processes with a low degree of automation, which undoubtedly increases the processing procedures and production costs of the enterprise. Summary of the invention
[0005] The technical problem to be solved by the present invention is to overcome the above difficulties and propose a sampling device for the bottom contact of the coal entering the factory.
[0006] In order to solve the above problems, the technical scheme of the present invention is: a sampling device for coal touching the bottom of the factory, comprising a trolley walking mechanism and a trolley walking mechanism on the top surface of the trolley walking mechanism, a connecting frame is provided on the bottom surface of the trolley walking mechanism and a sampling cylinder that can move up and down is provided in the connecting frame, a detection unit for preventing the bottom of the sampling cylinder from touching the bottom is provided on the outer wall, a support seat is provided at either end of the trolley walking mechanism, a crushing box is provided on the top surface of the support seat, two ends of the crushing box are symmetrically penetrated with relatively rotatable rotating shafts, two ends of the two rotating shafts are respectively provided with eccentric wheels, a swinging cylinder is rotatably sleeved on the outer wall of each eccentric wheel, and extrusion hammers that cooperate with each other are respectively provided at the opposite end surfaces of the two swinging cylinders at the same end, a mounting frame that swings left and right with the swinging cylinder is provided in the crushing box below the extrusion hammer, and a pullable screen is also provided in the mounting frame, a discharging port is opened on the bottom surface of the crushing box, a material discharging screen that can swing left and right is provided around the discharging port, and a linkage adjustment unit is provided on the material discharging screen and the eccentric wheel.
[0007] As an improvement, the detection unit includes a connecting tube installed on the sampling tube, an end cover is provided on the end face of the connecting tube, a pressure sensor is provided on the inner wall of the end cover, and a movable seat is provided in the connecting tube which can slide left and right and squeeze the contact of the pressure sensor, a wedge block is provided in the central position of the movable seat, a cylinder body is fixedly provided on the bottom face of the connecting tube corresponding to the wedge block and a movable rod which can slide up and down is passed through the cylinder body, the top end of the movable rod extends into the connecting tube, the bottom end is lower than the bottom end of the sampling tube, and the top end of the movable rod is provided with a matching block which matches the wedge block, so that the distance between the bottom of the sampling tube and the bottom wall of the carriage can be effectively detected by the detection unit.
[0008] As an improvement, a limit seat for the moving rod to pass through is fixedly provided in the cylinder, and a pressure plate is fixedly provided on the moving rod in the cylinder, and a return spring is wound between the pressure plate and the limit seat, so that the automatic return operation of the moving rod is realized by the return spring.
[0009] As an improvement, a plurality of telescopic rods 1 are fixedly arranged at equal intervals on the circumferential surface between the movable seat and the end cover, and a return spring 2 is wound around the outside of each telescopic rod 1. The cooperation between the telescopic rod 1 and the return spring 2 ensures the stability of the movable seat during the left and right sliding process.
[0010] As an improvement, a connecting seat is provided on the bottom surface of each of the swing cylinders and a sliding groove is provided on the connecting seat, a swing rod slidably connected thereto is provided in each of the sliding grooves, and two limit seats are provided on the swing rod at both ends of the connecting seat, and two support seats for the swing rod to pass through are fixedly provided on the inner wall of the crushing box, the opposite ends of the two swing rods at the same end are fixedly connected to one end surface of the mounting frame, and two telescopic rods are fixedly provided on the other two swing rods, and the other ends of the two telescopic rods are fixedly connected to the other end surface of the mounting frame, through the cooperation of the connecting seat, the sliding groove, the swing rod, the two limit seats and the two support seats, not only can the relative or opposite swinging operation of the two swing cylinders be guaranteed, but also the mounting frame can be synchronously adjusted to swing left and right.
[0011] As an improvement, the linkage adjustment unit includes gear one and gear two which are connected to the outer ends of the two rotating shafts and mesh with each other. A turntable is provided on the rear end face of the rotating shaft connected to gear two, and eccentric blocks are provided on the turntable and gear two respectively. A hinge shaft is fixedly provided on the crushing box above gear two and a swing arm is provided on the hinge shaft. A guide groove for the sliding of the eccentric block is provided on the swing arm along its height direction. Connecting rods are fixedly provided on the front and rear end faces of the discharge screen respectively, and swing arms are hinged on the two connecting rods respectively, and the swing arms and the bottom ends of the swing arms on the same side are hinged to each other. Through the linkage adjustment unit, the discharge screen can be synchronously driven to swing left and right during the crushing and screening of the samples, so that the samples can be discharged evenly.
[0012] As an improvement, guide rods for the discharge screen to pass through are fixed at both ends of the discharge port, and the two guide rod ends at the same end are respectively provided with mounting plates connected to the bottom wall of the crushing box. A return spring three is also wound around the guide rod. Through the operation of the guide rod and the return spring three, the stability of the discharge screen during the left and right swinging process can be guaranteed.
[0013] As an improvement, a positioning unit is provided between the end of the screen and the mounting frame, and the positioning unit includes fixing rods fixedly connected to both sides of the end of the screen, and each of the fixing rods is provided with a positioning seat on the end surface, and fixing frames are fixedly provided on the end surfaces of the mounting frame, and a sliding rod that can move up and down and has a rebound function is passed through the fixing frame, and an abutment seat that cooperates with the positioning seat is fixed on the bottom surface of the sliding rod. When the screen is extended into the mounting frame, the screen is effectively positioned through the cooperation of the positioning seat and the abutment seat.
[0014] As an improvement, a compression spring is fixedly provided between the top surface of the slide bar and the top wall of the fixed frame, and the compression spring can enable the slide bar to have an automatic rebound function.
[0015] Compared with the existing technology, the advantages of the present invention are: when the sampling tube is extended to the bottom of the coal seam for full-depth sampling, the safe distance between the sampling tube and the bottom wall of the carriage can be effectively detected through the detection unit, and after the sampled sample is injected into the crushing box, the crushing, screening and sample reduction processes can be effectively combined. Specifically:
[0016] 1. The sampling tube drives the moving rod to move downward synchronously and insert into the bottom of the coal seam. When the moving rod contacts the bottom wall of the carriage, it drives the matching block to move upward, and then pushes the wedge block and the moving seat to move to the position of the pressure sensor, squeezing the contact of the pressure sensor, so as to effectively detect the position of the sampling tube and avoid the phenomenon of inadequate sampling or damage to the bottom of the carriage;
[0017] 2. The sample is crushed under the action of the swing cylinder and the extrusion hammer that move relative or opposite to each other. At the same time, under the action of the connecting seat, the slide, the swing rod, the second limit seat, the second support seat, the installation frame, the second telescopic rod and the screen, the screen can be driven to swing left and right synchronously while being crushed, so that the crushing and screening processes can be combined;
[0018] 3. The removable screen in the installation frame and the cooperation of the abutment seat and the positioning seat can be pulled out of the crushing box to effectively collect and process the larger particles in the crushing box;
[0019] 4. The rotation of the shaft drives gear 1 and gear 2 to mesh, and drives the eccentric blocks on the front and rear sides to rotate. Under the action of the guide groove, it drives the swing arm to swing left and right, and drives the swing rod articulated with it to swing left and right, and then drives the unloading screen to swing back and forth left and right, so that it can unload materials evenly on the top surface of the reducer, thereby effectively combining the crushing, screening and sample reduction, reducing the company's production cost and processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the overall structural diagram of the present invention.
[0021] Figure 2 It is the external structure diagram of the crushing box in the present invention.
[0022] Figure 3 It is the front internal structure diagram of the crushing box in the present invention.
[0023] Figure 4 It is a front structural diagram of the connection of various components in the crushing box of the present invention.
[0024] Figure 5 It is a rear view structural diagram of the connection of various components in the crushing box of the present invention.
[0025] Figure 6 It is a structural diagram of the detection unit in the present invention.
[0026] Figure 7 It is a diagram of the internal structure of the detection unit in the present invention.
[0027] Figure 8 It is a structural diagram of the cooperation between the mounting frame and the screen in the present invention.
[0028] Fig. 9 It is an external enlarged structural diagram of the positioning unit in the present invention.
[0029] Fig.10 It is an enlarged internal structure diagram of the positioning unit in the present invention.
[0030] As shown in the figure: 1. Carriage travel mechanism; 2. Carriage travel mechanism; 211. Connection frame; 212. Sampling cylinder; 3. Detection unit; 310. Connection cylinder; 311. End cover; 312. Pressure sensor; 313. Moving seat; 314. Wedge block; 315. Telescopic rod 1; 316. Reset spring 2; 317. Cylinder; 318. Moving rod; 319. Press plate; 320. Limit seat 1; 321. Reset spring 1; 322. Matching block; 323. Guide block; 4. Support seat 1; 5. Crushing box; 6. Feeding port; 7. Rotating shaft; 8. Eccentric wheel; 9. Swinging cylinder; 10. Extrusion hammer; 11. Connection seat; 12. Slide; 13. Swinging rod; 14. Limit seat 2, 15. Support seat 2; 16. Mounting frame; 17. Screen; 18. Telescopic rod 2; 19. Slide rail; 20. Sliding seat; 21. Fixed rod; 22. Positioning seat; 23. Fixed frame; 24. Slide rod; 25. Abutment seat; 26. Positioning groove; 27. Positioning block; 28. Discharge port; 29. Feed screen; 30. Linkage adjustment unit; 3010. Gear 1; 3011. Gear 2; 3012. Eccentric block; 3013. Articulated shaft; 3014. Swing arm; 3015. Guide groove; 3016. Swing rod; 3017. Turntable; 3018. Connecting rod; 31. Motor; 32. Guide rod; 33. Mounting plate; 34. Feed chute; 35. Placement seat; 36. Reset spring 3. DETAILED DESCRIPTION
[0031] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0032] As attached Figure 1As shown, a sampling device for bottom contact of incoming coal comprises a trolley traveling mechanism 1 and a trolley traveling mechanism 2 on the top surface of the trolley traveling mechanism 1, a connecting frame 211 is provided on the bottom surface of the trolley traveling mechanism 2, and a sampling barrel 212 which can move up and down is provided in the connecting frame 211, and a lifting assembly for adjusting the upward and downward movement of the sampling barrel 212 is provided on the trolley traveling mechanism 2, and a spiral sampling shaft which can rotate forward and reverse is provided in the sampling barrel 212, and a controller is also provided on the trolley traveling mechanism, under the action of the controller, the trolley traveling mechanism 1 and the trolley traveling mechanism 2 are driven to move, and the position of the sampling barrel 212 is effectively adjusted, and then the sampling barrel 212 is adjusted to move downward by the lifting assembly, and the spiral sampling shaft is controlled to rotate forward at the same time, and in the process of the sampling barrel 212 moving downward, the sample on the spiral sampling shaft is confined in the sampling barrel 212, and the incoming coal is sampled, and after the sampling is completed, the sampling barrel 212 is controlled to move upward, and then the spiral sampling shaft is rotated in the reverse direction, and the sample is set out. The above features belong to the prior art and will not be repeated here.
[0033] As attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown, a support seat 4 is provided at either end of the trolley walking mechanism 1, and a crushing box 5 is provided on the top surface of the support seat 4. Rotating shafts 7 that can rotate relatively are symmetrically penetrated at both ends of the crushing box 5. Eccentric wheels 8 are provided on the two rotating shafts 7 near the inner wall of the crushing box 5, and a swinging cylinder 9 is rotatably sleeved on the outer wall of each eccentric wheel 8. Extrusion hammers 10 that cooperate with each other are respectively provided at the opposite end surfaces of the two swinging cylinders 9 at the same end. A feeding port 6 is provided on the top surface of the crushing box 5 corresponding to the two extrusion hammers 10, and a mounting frame 16 that swings left and right with the swinging cylinder 9 is provided in the crushing box 5 below the extrusion hammer 10, and a pullable screen 17 is also provided in the mounting frame 16. The setting of the screen 17 can screen the crushed samples, and a discharge port 28 is provided on the bottom surface of the crushing box 5, and a lower material screen 29 that can swing left and right is provided around the discharge port 28, and a linkage adjustment unit 30 is provided on the lower material screen 29 and the eccentric wheel 8.
[0034] As attached Figure 1 , Attachment Figure 6 and attached Figure 7As shown, the outer wall of the sampling cylinder 212 is provided with a detection unit 3 to prevent its bottom from touching the bottom. The detection unit 3 includes a connecting cylinder 310 installed on the sampling cylinder 212, and an end cover 311 is provided on the end surface of the connecting cylinder 310. A pressure sensor 312 is provided on the inner wall of the end cover 311. The pressure sensor 312 is a spoke-type tension pressure sensor, and a movable seat 313 that can slide left and right in the connecting cylinder 310 is provided to squeeze the contact of the pressure sensor 312. A wedge block 314 is provided at the central position of the movable seat 313. A cylinder body 317 is fixedly provided on the bottom surface of the connecting cylinder 310 corresponding to the wedge block 314, and a movable rod 318 that can slide up and down is passed through the cylinder body 317. The movable rod 318 The top end of the movable rod 318 extends into the connecting tube 310, and the bottom end is lower than the bottom end of the sampling tube 212, and the top end of the movable rod 318 is provided with a matching block 322 matched with the wedge block 314, and guide blocks 323 are respectively provided on the top and bottom surfaces of the connecting tube 310, and a limiting seat 320 for the movable rod 318 to pass through is fixedly provided in the cylinder body 317, and a pressure plate 319 is fixedly provided on the movable rod 318 in the cylinder body 317, and a return spring 321 is also wound between the pressure plate 319 and the limiting seat 320, and a plurality of telescopic rods 315 are fixedly provided at equal intervals on the circumferential surface between the movable seat 313 and the end cover 311, and a return spring 316 is also wound around the outer side of each telescopic rod 315.
[0035] The working principle of the detection unit 3 is to electrically connect the pressure sensor 312 to the external controller through a wire. The pressure sensor 312 is placed longitudinally in the connecting tube 310, which can reduce the axial length of the connecting tube 310, thereby reducing the resistance when it is extended into the coal seam. When the sampling tube 212 descends and is inserted into the bottom of the coal seam, the moving rod 318 is driven to extend to the position at the bottom of the coal seam. When the sampling tube 212 approaches the bottom of the carriage, the moving rod 318 will first abut against the bottom of the carriage, and at the same time, the moving rod 318 will move upward. With the cooperation of the matching block 322 and the wedge block 314, the moving seat 313 is driven to move in the direction close to the pressure sensor 312, so that the moving seat 313 squeezes the contact of its pressure sensor 312. Under the action of the pressure sensor 312, the downward moving distance of the sampling tube 212 is detected, thereby avoiding the phenomenon of inadequate sampling or damage to the bottom of the carriage.
[0036] As attached Figure 3 , Attachment Figure 4 and attached Figure 5As shown, a connecting seat 11 is provided on the bottom surface of each of the swing cylinders 9, and a slide groove 12 is opened on the connecting seat 11, and a swing rod 13 slidably matched therewith is respectively penetrated in each of the slide grooves 12, and two limit seats 14 are respectively provided on the swing rod 13 at both ends of the connecting seat 11, and two support seats 15 for the swing rod 13 to pass through are fixedly provided on the inner wall of the crushing box 5, and the opposite ends of the two swing rods 13 at the same end are respectively fixedly connected to one end surface of the mounting frame 16, and two telescopic rods 18 are respectively fixed on the other two swing rods 13, and the other ends of the two telescopic rods 18 are respectively fixedly connected to the other end surface of the mounting frame 16.
[0037] The working principle of the left and right swing of the mounting frame 16 is that the two relatively rotating shafts 7 drive the eccentric wheels 8 at both ends to rotate relative to each other, and then drive the swing cylinders 9 at both ends to perform reciprocating relative or opposite swing adjustment. When the swing cylinder 9 swings left and right, it not only drives the connecting seat 11 to swing in the up and down directions, but also makes the connecting seat 11 swing with the swing cylinder 9 in a fixed posture. Under the action of the limiting seats 14 at both ends, it can not only avoid the self-rotation of the swing cylinder 9, but also make the extrusion hammers 10 at both ends to perform reciprocating relative or opposite swing to crush the sample, but also drive the swing rod 13 to swing left and right on the supporting seat 15, and then drive the mounting frame 16 and the internal screen 17 to perform synchronous left and right swing adjustment under the action of the telescopic rod 18, so that synchronous screening processing can be performed while crushing.
[0038] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4As shown, the linkage adjustment unit 30 includes a gear 1 3010 and a gear 2 3011 connected to the outer ends of the two rotating shafts 7 and meshing with each other, a turntable 3017 is provided on the rear end face of the rotating shaft 7 connected to the gear 2 3011, and the radius of the turntable 3017 and the gear 2 3011 are set equal, eccentric blocks 3012 are respectively provided on the turntable 3017 and the gear 2 3011 at opposite positions, and a hinge shaft 3013 is fixedly provided on the crushing box 5 above the gear 2 3011 and a swing arm 3014 is provided on the hinge shaft 3013, and a guide groove 3015 for the eccentric block 3012 to slide is opened on the swing arm 3014 along its height direction, and the eccentric block 3012 is provided on the front and rear end faces of the unloading screen 29. A connecting rod 3018 is fixedly provided separately, and the two connecting rods 3018 are respectively hinged with a swing rod 3016, and the bottom end of the swing rod 3016 and the swing arm 3014 on the same side are hinged to each other, and the outer end of the rotating shaft 7 is connected to the output shaft of the motor 31, and a material discharge trough 34 is opened on the support seat 4 corresponding to the material discharge screen 29, and a placement seat 35 is also provided on the bottom surface of the support seat 4, and a reducer is provided on the placement seat 35 at the corresponding position of the material discharge trough 34, and guide rods 32 for the material discharge screen 29 to pass through are fixedly provided at both ends of the discharge port 28, and the ends of the two guide rods 32 at the same end are respectively provided with mounting plates 33 connected to the bottom wall of the crushing box 5, and a reset spring 36 is also wound on the guide rod 32.
[0039] The working principle of the linkage adjustment unit 30 is that the starting motor 31 drives the gear 1 3010 and the gear 2 3011 at both ends to mesh and rotate, and at the same time drives the rotating shaft 7 and the eccentric wheel 8 at both ends to rotate relative to each other, and then drives the swing cylinder 9 and the extrusion hammer 10 at both ends to perform reciprocating relative or opposite movement adjustment, and crushes the sample entering the crushing box 5. While the gear 2 3011 and the turntable 3017 rotate, the eccentric block 3012 is driven to rotate, and in cooperation with the connected guide groove 3015, the swing arm 3014 is driven to swing left and right, and then the swing rod 3016 hinged to it is driven to swing left and right, and at the same time, the discharge screen 29 is pushed to swing left and right at the discharge port 28, so that the sample falls into the reducer evenly.
[0040] As attached Figure 2 , Attachment Figure 8 , Attachment Fig. 9 and attached Fig.10As shown, slide rails 19 are fixedly provided on both sides of the inner wall of the installation frame 16 along the length direction thereof, and sliding seats 20 adapted thereto are provided in the two slide rails 19 respectively, and the opposite end faces of the two sliding seats 20 are fixedly connected to the end faces of the screen 17 respectively, and a through slot is also provided on the crushing box 5 corresponding to the screen 17, and a cover plate is hinged at the corresponding position of the through slot. When the cover plate is opened, the screen 17 can be adjusted in a pull-out manner in the installation frame 16 with the cooperation of the slide rails 19 and the sliding seats 20, and the screen 17 can be moved to the outside of the crushing box 5, so that the larger particles on the screen 17 can be collected and processed conveniently and quickly, and a positioning unit is provided between the end of the screen 17 and the installation frame 16;
[0041] The positioning unit includes a fixing rod 21 fixedly connected to both sides of the end of the screen 17, each of the fixing rods 21 is provided with a positioning seat 22 on the end surface, and a fixing frame 23 is fixedly provided on the end surface of the installation frame 16, and a sliding rod 24 that can move up and down and has a rebound function is passed through the fixing frame 23, and a compression spring is fixedly provided between the top surface of the sliding rod 24 and the top wall of the fixing frame 23, and an abutment seat 25 that matches the positioning seat 22 is fixedly provided on the bottom surface of the sliding rod 24, and the positioning seat 22 and the abutment seat The contact surfaces 25 are respectively provided with guiding surfaces that cooperate with each other, a positioning groove 26 is provided at the end of the guiding surface of the abutting seat 25, and a positioning block 27 that is compatible with the positioning groove 26 is fixedly provided at the end of the guiding surface of the positioning seat 22, and chamfered surfaces that cooperate with each other are also provided at the ends of the positioning block 27 and the positioning groove 26. Under the action of the chamfered surfaces, when the screen 17 is pulled outward under the action of external force, the positioning block 27 and the positioning groove 26 are separated, and the positioning seat 22 and the abutting seat 25 are separated at the same time.
[0042] The working principle of the positioning unit is that when the screen 17 is moved into the installation frame 16, the fixing rod 21 and the positioning seat 22 are driven to move inward at the same time, so that the positioning seat 22 and the abutment seat 25 cooperate with each other, and the sliding rod 24 is driven to move upward to contract and adjust its compression spring. Under the reaction force of the compression spring, the tightness of the cooperation between the abutment seat 25 and the positioning seat 22 is guaranteed, and the positioning block 27 falls into the positioning groove 26. In this way, the stability of the cooperation between the positioning seat 22 and the abutment seat 25 can be guaranteed, and the stability of the connection of the screen 17 in the installation frame 16 can be guaranteed.
[0043] In specific use, when the transport vehicle of incoming coal arrives at the trolley walking mechanism 1, the position of the sampling tube 212 is adjusted by controlling the movement of the trolley walking mechanism 1 and the trolley walking mechanism 2. After the adjustment is completed, the sampling tube 212 is controlled to move downward so that the bottom end of the sampling tube 212 is inserted into the bottom position of the coal seam. Under the action of the detection unit 3, the distance between the bottom end of the sampling tube 212 and the bottom of the carriage can be effectively detected, so as to avoid the phenomenon of inadequate sampling or damage to the bottom of the carriage. After the sampling is completed, the sampling tube 212 is first moved upward, and then moved to the position corresponding to the feed port 6 by the trolley walking mechanism 2, and the sampled sample is injected into the crushing box 5;
[0044] The motor 31 is started and the gear 1 3010 and the gear 2 3011 at both ends are meshed, which drives the rotating shaft 7 and the eccentric wheel 8 at both ends to rotate relative to each other, and then drives the swing cylinder 9 and the extrusion hammer 10 at both ends to move relative to or away from each other in a reciprocating manner, so as to crush the sample. At the same time, the mounting frame 16 and the screen 17 can be driven to swing left and right synchronously, and the crushed sample can be screened, so that the crushing and screening processes can be carried out synchronously;
[0045] As gear 2 3011 and turntable 3017 rotate, the eccentric blocks 3012 at both ends are driven to rotate as well. Under the action of guide groove 3015, hinged swing arm 3014 is driven to swing left and right, and then swing rod 3016 is driven to swing left and right. Then, discharge screen 29 is driven to swing back and forth left and right at discharge port 28. In this way, the screened samples can fall evenly into the reducer below to obtain reduced samples, so that the processing steps of crushing, screening and reducing samples can be carried out simultaneously, reducing the processing steps and production cost requirements of the enterprise.
[0046] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.
Claims
1. A sampling device for coal bottom contact entering a factory, comprising a trolley traveling mechanism (1) and a trolley traveling mechanism (2) on the top surface of the trolley traveling mechanism (1), wherein a connecting frame (211) is provided on the bottom surface of the trolley traveling mechanism (2) and a sampling cylinder (212) movable up and down is provided in the connecting frame (211), characterized in that: The outer wall of the sampling tube (212) is provided with a detection unit (3) to prevent the bottom of the sampling tube from touching the bottom. A support seat (4) is provided at either end of the trolley walking mechanism (1). A crushing box (5) is provided on the top surface of the support seat (4). Rotating shafts (7) that can rotate relative to each other are symmetrically penetrated at both ends of the crushing box (5). Eccentric wheels (8) are provided at both ends of the two rotating shafts (7). An oscillating cylinder (9) is rotatably sleeved on the outer wall of each eccentric wheel (8); two oscillating cylinders (9) at the same end are respectively provided with mutually cooperating extrusion hammers (10) at opposite end surfaces; a mounting frame (16) that swings left and right with the oscillating cylinder (9) is provided in the crushing box (5) below the extrusion hammer (10); and a removable screen (17) is also provided in the mounting frame (16); A discharge port (28) is provided on the bottom surface of the crushing box (5), a material discharge screen (29) which can swing left and right is provided around the material discharge port (28), and a linkage adjustment unit (30) is provided on the material discharge screen (29) and the eccentric wheel (8); The detection unit (3) comprises a connecting tube (310) mounted on a sampling tube (212); an end cover (311) is provided on the end surface of the connecting tube (310); guide blocks (323) are provided on the top and bottom surfaces of the connecting tube (310); a pressure sensor (312) is provided on the inner wall of the end cover (311); and a movable seat (313) is provided in the connecting tube (310) so as to be slidable left and right and to press a contact of the pressure sensor (312); A wedge block (314) is provided at the central position, a cylinder body (317) is fixedly provided on the bottom surface of the connecting cylinder (310) corresponding to the wedge block (314), and a movable rod (318) that can slide up and down is passed through the cylinder body (317), the top end of the movable rod (318) extends into the connecting cylinder (310), the bottom end is lower than the bottom end of the sampling cylinder (212), and the top end of the movable rod (318) is provided with a matching block (322) that matches the wedge block (314); A limiting seat (320) for the moving rod (318) to pass through is fixedly provided in the cylinder (317), a pressing plate (319) is fixedly provided on the moving rod (318) in the cylinder (317), and a return spring (321) is wound between the pressing plate (319) and the limiting seat (320); A plurality of telescopic rods (315) are fixedly arranged at equal intervals on the circumferential surface between the movable seat (313) and the end cover (311), and a return spring (316) is wound around the outer side of each telescopic rod (315).
2. The device for sampling and preparing the bottom-touching coal entering the factory according to claim 1 is characterized in that: A connecting seat (11) is provided on the bottom surface of each swing cylinder (9), and a slide groove (12) is provided on the connecting seat (11). A swing rod (13) slidably connected thereto is provided in each slide groove (12), and two limit seats (14) are provided on the swing rod (13) at both ends of the connecting seat (11). Two support seats (15) for the swing rod (13) to pass through are fixedly provided on the inner wall of the crushing box (5). The opposite ends of the two swing rods (13) at the same end are fixedly connected to one end surface of the mounting frame (16), and two telescopic rods (18) are fixedly provided on the other two swing rods (13), and the other ends of the two telescopic rods (18) are fixedly connected to the other end surface of the mounting frame (16).
3. A sampling device for bottom-touching incoming coal according to any one of claims 1-2, characterized in that: The linkage adjustment unit (30) comprises a gear 1 (3010) and a gear 2 (3011) connected to the outer ends of the two rotating shafts (7) and meshing with each other, a rotating disk (3017) is provided on the rear end surface of the rotating shaft (7) connected to the gear 2 (3011), an eccentric block (3012) is provided on the rotating disk (3017) and the gear 2 (3011), and a hinge shaft (3012) is fixedly provided on the crushing box (5) above the gear 2 (3011). 3) A swing arm (3014) is provided on the hinge shaft (3013), a guide groove (3015) for the eccentric block (3012) to slide is provided on the swing arm (3014) along its height direction, connecting rods (3018) are fixedly provided on the front and rear end surfaces of the unloading screen (29), two connecting rods (3018) are hingedly connected to swing rods (3016), and the swing rods (3016) and the bottom end of the swing arm (3014) on the same side are hingedly arranged with each other.
4. The device for sampling the bottom of incoming coal according to claim 3 is characterized by: Guide rods (32) for the material discharge screen (29) to pass through are fixedly provided at both ends of the discharge port (28), and mounting plates (33) connected to the bottom wall of the crushing box (5) are provided at the ends of the two guide rods (32) at the same end, respectively. A return spring (36) is also wound around the guide rods (32).
5. The device for sampling the bottom of incoming coal according to claim 1, characterized in that: A positioning unit is provided between the ends of the screen (17) and the mounting frame (16), the positioning unit comprising fixing rods (21) fixedly connected to both sides of the ends of the screen (17), a positioning seat (22) being provided on the end surface of each fixing rod (21), a fixing frame (23) being fixedly provided on the end surface of the mounting frame (16), a sliding rod (24) which can move up and down and has a rebound function being passed through the fixing frame (23), and an abutting seat (25) which matches the positioning seat (22) being fixedly provided on the bottom surface of the sliding rod (24).
6. The device for sampling the bottom of incoming coal according to claim 5, characterized in that: A compression spring is fixedly provided between the top surface of the sliding rod (24) and the top wall of the fixing frame (23).
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