Dedusting and cleaning device for coal mine scraper conveyor

Abstract

The invention relates to the technical field of coal mine equipment, in particular to a dust removal cleaning device for a coal mine scraper conveyor, which comprises a cleaning frame, and a vibration excitation mechanism and a rolling brush mechanism arranged on the cleaning frame, the cleaning frame is fixedly arranged at the lower end of the scraper conveyor, the vibration excitation mechanism comprises a vibration exciter, a guide rod and a vibration excitation frame, the guide rod is fixedly arranged on the cleaning frame, one end of the vibration excitation frame is fixedly connected with a sleeve and connected with the guide rod through the sleeve, a guide groove is formed in the outer side face of the guide rod, and a guide block in sliding fit with the guide groove is fixedly arranged in the sleeve. The guide rod is sleeved with a first return spring, one end of the first return spring makes contact with the sleeve, the other end of the first return spring makes contact with the cleaning frame, and the vibration exciter is arranged at the other end of the vibration excitation frame. By means of the synergistic effect of the excitation mechanism and the rolling brush mechanism, surface pulverized coal is stripped through high-frequency vibration, then residual stubborn stains are removed through multi-angle friction of the rolling brush, a vibration-scrubbing dual-cleaning mechanism is formed, and cleaning thoroughness is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine equipment, and more specifically to a dust removal and cleaning device for a coal mine scraper conveyor. Background Art

[0002] During the coal transportation process of the coal mine scraper conveyor, coal dust and stains are easily adhered to the scraper surface. Long-term accumulation will lead to increased equipment operation resistance, increased energy consumption, and even cause problems such as chain jamming or increased wear. Existing cleaning devices mostly use a single roller brush mechanism for cleaning, which is difficult to completely remove stubborn coal dust, especially for sticky coal slime or compacted coal lumps. The traditional roller brush mechanism has the problems of insufficient contact with the scraper and limited brushing range, and lacks an avoidance function, which may interfere with the normal operation of the scraper conveyor.

[0003] Therefore, it is necessary to improve the prior art. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, a dust removal and cleaning device for a coal mine scraper conveyor is provided, which can efficiently remove stubborn coal powder, adapt to scraper movement, have a self-cleaning function and does not affect the normal operation of the conveyor.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A dust removal and cleaning device for a coal mine scraper conveyor comprises a cleaning frame and a vibration mechanism and a roller brush mechanism arranged on the cleaning frame; The cleaning frame is fixedly arranged at the lower end of the scraper conveyor, and the excitation mechanism includes a vibrator, a guide rod and an excitation frame. The guide rod is fixedly arranged on the cleaning frame, one end of the excitation frame is fixedly connected with a sleeve and is connected with the guide rod through the sleeve, the outer side of the guide rod is provided with a guide groove, and a guide block slidingly matched with the guide groove is fixedly arranged in the sleeve, a first return spring is sleeved on the guide rod, one end of the first return spring is in contact with the sleeve, and the other end of the first return spring is in contact with the cleaning frame, and the vibrator is arranged at the other end of the excitation frame; The roller brush mechanism comprises a telescopic frame, a roller brush mounting frame and a roller brush, the lower end of the telescopic frame is hinged on the cleaning frame, a limit mechanism is arranged between one side of the telescopic frame and the cleaning frame, and a limit switch is arranged between the other side of the telescopic frame and the cleaning frame; a return drive is arranged between the telescopic frame and the limit mechanism; The telescopic base includes two telescopic rods connected in a sliding manner, and a first spring and a first driver are arranged between the two telescopic rods. The first spring and the first driver are respectively used to drive the telescopic base to extend and shorten; the roller brush mounting frame is arranged at the upper end of the telescopic base, and the roller brush is rotatably arranged on the roller brush mounting frame and is connected to a driving mechanism; the first driver is connected to the limit switch signal.

[0006] Preferably, the roller brush mounting frame includes a first mounting frame and a second mounting frame which are hinged to each other, the first mounting frame is fixedly connected to the telescopic base frame, the first mounting frame is provided with a first roller shaft and a second roller shaft, the second mounting frame is provided with a third roller shaft, the first roller shaft, the second roller shaft and the third roller shaft are arranged in a U shape, and a second spring is provided between the second mounting frame and the first mounting frame.

[0007] Preferably, the driving mechanism includes a second driver, the first roller, the second roller and the third roller are transmission connected via a belt mechanism, and one of the first roller, the second roller and the third roller is transmission connected to the second driver.

[0008] Preferably, the return driver comprises a second return spring, and a damper is provided at the hinge between the telescopic base frame and the cleaning frame.

[0009] Preferably, a guide wheel frame is fixedly provided on the vibration frame, a guide wheel is rotatably provided on the guide wheel frame, and the guide wheel frame is located at one end of the vibration frame close to the vibration exciter.

[0010] Preferably, it also includes a flushing mechanism, which includes a water tank, a water pump, a flushing rack and a flushing nozzle. The flushing rack is fixedly arranged on the telescopic base frame, and a plurality of flushing nozzles are arranged along the length direction of the flushing rack, and the flushing nozzles point to the roller brush mounting frame. The water pump is connected to the water tank and the plurality of flushing nozzles on the flushing rack through a pipeline.

[0011] Preferably, the limiting mechanism comprises a limiting frame, a retreat groove for the telescopic base to pass through is arranged in the middle of the limiting frame, and a limiting rod cooperating with the telescopic base is arranged at the upper end of the retreat groove.

[0012] Preferably, the limiting rod is slidably connected to the limiting frame, and a handle is provided at one end of the limiting rod.

[0013] Preferably, the guide rod is provided with a limiting hole for inserting a limiting pin, and the limiting pin is used to limit the return of the vibration frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the synergistic effect of the excitation mechanism and the roller brush mechanism to first use high-frequency vibration to peel off the surface coal powder, and then use the roller brush to rub at multiple angles to remove the remaining stubborn stains, forming a "vibration-brushing" dual cleaning mechanism, which significantly improves the thoroughness of cleaning.

[0015] 2. The spiral guide groove of the guide rod and the sleeve of the present invention cooperate to enable the vibrator to rotate downward synchronously when moving horizontally, and can automatically avoid the scraper after the excitation is completed to prevent interference with the scraper; the limit pin design can lock the vibrator to the non-working position to ensure that there is no interference during the normal operation of the conveyor.

[0016] 3. The present invention adopts a U-shaped three-roller layout to form a wrapped cleaning surface, and with the elastic hinge structure of the second spring, it can adapt to scrapers of different thicknesses and prevent jamming. The telescopic base is linked with the limit switch to realize the "contact-contraction-reset" cycle action, and the coordinated control of the first driver and the return spring ensures the dynamic fit between the roller brush and the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the working state of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of the structure of the excitation mechanism; Figure 5 It is a schematic diagram of the roller brush mechanism structure; Figure 6 for Figure 5 A partial enlarged view of middle A; Figure 7 It is a cross-sectional schematic diagram of the telescopic base frame.

[0019] In the figure: 1-cleaning frame, 2-vibration mechanism, 21-vibrator, 22-guide rod, 23-vibration frame, 24-sleeve, 25-guide groove, 26-first return spring, 27-guide wheel frame, 28-guide wheel, 29-limit hole, 3-flushing mechanism, 31-water tank, 32-water pump, 33-flushing frame, 34-flushing nozzle, 4-roller brush mechanism, 41-telescopic base frame, 42-roller brush mounting frame, 43-roller brush, 44-first spring, 45-first driver, 46-first roller shaft, 47-second roller shaft, 48-third roller shaft, 49-second spring, 410-second driver, 411-belt mechanism, 5-scraper conveyor, 6-limiting mechanism, 61-limit switch, 62-return driver, 63-retreat groove, 64-limiting rod, 65-handle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: like Figures 1 to 7As shown, a dust removal and cleaning device for a coal mine scraper conveyor includes a cleaning frame 1 and a vibration mechanism 2 and a roller brush mechanism 4 arranged on the cleaning frame 1. The vibration mechanism 2 knocks the scraper to make the coal powder adhered to the scraper fall off, and the roller brush mechanism 4 uses a roller brush to brush the coal powder or stains on the scraper that are difficult to vibrate off to make them fall off.

[0022] Specifically, the cleaning frame 1 is fixedly arranged at the lower end of the scraper conveyor 5, and the excitation mechanism 2 includes a vibrator 21, a guide rod 22 and an excitation frame 23. The guide rod 22 is fixedly arranged on the cleaning frame 1 in the horizontal direction. One end of the excitation frame 23 is fixedly connected with a sleeve 24 and connected to the guide rod 22 through the sleeve 24. The sleeve 24 can slide relative to the guide rod 22 and can also rotate relative to the guide rod 22. A guide groove 25 is arranged on the outer side of the guide rod 22, and a guide block that slides with the guide groove 25 is fixedly arranged in the sleeve 24. When the sleeve 24 moves toward one end of the guide rod 22, the excitation frame 23 rotates while moving through the cooperation of the guide block and the guide groove 25. A first return spring 26 is sleeved on the guide rod 22, one end of the first return spring 26 contacts the sleeve 24, and the other end of the first return spring 26 contacts the cleaning frame 1. The excitation frame 23 can return to its original position through the first return spring 26. The other end of the excitation frame 23 is provided with a vibrator 21.

[0023] When the scraper needs to be cleaned, the moving scraper first contacts the vibrator 21, and the scraper is vibrated by the vibrator 21; as the scraper continues to move, the vibration frame 23 is pushed to move along the guide rod 22 and rotate downward at the same time until the vibrator 21 is separated from the scraper, completing the vibration cleaning of the scraper.

[0024] After the vibrator 21 is separated from the scraper, it returns to the initial position driven by the first return spring 26 to clean the next scraper. In order to make the movement of the vibrator 21 more stable, a guide wheel frame 27 is fixedly provided on the vibration frame 23, and a guide wheel 28 is rotatably provided on the guide wheel frame 27. The guide wheel frame 27 is located at one end of the vibration frame 23 close to the vibrator 21. The guide wheel 28 contacts the lower end of the scraper conveyor to reduce the impact on the vibrator 21 body.

[0025] In order to prevent the vibration exciter 21 from interfering with the movement of the scraper when the scraper conveyor 5 is working normally, a limit hole 29 for inserting a limit pin is provided on the guide rod 22. The vibration exciter 21 is moved under the scraper, and the limit pin is inserted into the limit hole 29 to limit the vibration exciter 23 from returning to its original position, thereby limiting the position of the vibration exciter 21.

[0026] The roller brush mechanism 4 includes a telescopic base 41, a roller brush mounting frame 42 and a roller brush 43. The lower end of the telescopic base 41 is hinged on the cleaning frame 1. A limit mechanism 6 is arranged between one side of the telescopic base 41 and the cleaning frame 1 to limit the maximum rotation angle of the telescopic base 41 to that side. A limit switch 61 is arranged between the other side of the telescopic base 41 and the cleaning frame 1.

[0027] The telescopic base 41 includes two telescopic rods connected in a sliding manner, and a first spring 44 and a first driver 45 are arranged between the two telescopic rods. The first spring 44 and the first driver 45 are respectively used to drive the telescopic base 41 to extend and shorten. The first driver 45 can adopt a linear motor, and the first driver 45 is connected to the limit switch 61 signal, and a return driver 62 is arranged between the telescopic base 41 and the limit mechanism 6. When the telescopic base 41 contacts the limit switch 61, the first driver 45 drives the telescopic base 41 to shorten, and the telescopic base 41 rotates to the other side driven by the return driver 62. Preferably, the return driver 62 adopts a second return spring, and a damper is arranged at the hinge of the telescopic base 41 and the cleaning frame 1. The return speed of the telescopic base 41 is slowed down by damping to reduce the impact.

[0028] The roller brush mounting frame 42 is arranged at the upper end of the telescopic base 41, and the roller brush mounting frame 42 includes a first mounting frame and a second mounting frame which are hinged to each other, the first mounting frame is fixedly connected to the telescopic base 41, the first mounting frame is provided with a first roller shaft 46 and a second roller shaft 47, and the second mounting frame is provided with a third roller shaft 48, the first roller shaft 46, the second roller shaft 47, and the third roller shaft 48 are arranged in a U shape, and a second spring 49 is arranged between the second mounting frame and the first mounting frame, so that the second mounting frame can be opened when subjected to external force, and can return to the U-shaped arrangement state after the external force disappears.

[0029] The first roller 46, the second roller 47, and the third roller 48 are all provided with roller brushes and connected to a driving mechanism. Preferably, the driving mechanism includes a second driver 410, and the first roller 46, the second roller 47, and the third roller 48 are connected to each other through a belt mechanism 411, and one of the first roller 46, the second roller 47, and the third roller 48 is connected to the second driver 410. The second driver 410 can be a rotary motor.

[0030] In the initial state, the telescopic frame 41 tilts toward one side of the limit mechanism 6. When the scraper moves, the lower end of the scraper is inserted between the first roller 46, the second roller 47, and the third roller 48 arranged in a U shape. The first driver 45 is in a follow-up state. As the scraper moves, the telescopic frame 41 is driven to rotate to the other side. The telescopic frame 41 is shortened first and then extended. The telescopic frame 41 contacts the limit switch 61. At this time, the brush rollers on the first roller 46, the second roller 47, and the third roller 48 have finished brushing the scraper. The first driver 45 controls the telescopic frame 41 to shorten. The telescopic frame 41 rotates to the other side driven by the return driver 62 until the telescopic frame 41 contacts the limit mechanism 6, waiting to contact the next scraper. The second mounting frame is hinged to the first mounting frame to prevent the scraper from getting stuck during the cleaning process.

[0031] In order to prevent the scraper conveyor from interfering with the roller brush mechanism 4 during normal operation, preferably, the limiting mechanism 6 includes a limiting frame, a retreat groove 63 for the telescopic base frame 41 to pass through is provided in the middle of the limiting frame, a limiting rod 64 cooperating with the telescopic base frame 41 is provided at the upper end of the retreat groove 63, the limiting rod 64 is slidably connected to the limiting frame, and a handle 65 is provided at one end of the limiting rod 64. The limiting rod 64 can be pulled out by the handle 65, so that the telescopic base frame 41 is in the retreat groove 63, and the brush roller no longer contacts the scraper.

[0032] The flushing mechanism 3 includes a water tank 31, a water pump 32, a flushing frame 33 and a flushing nozzle 34. The flushing frame 33 is fixedly arranged on a telescopic base frame 41. A plurality of flushing nozzles 34 are arranged along the length direction of the flushing frame 33, and the flushing nozzles 34 point to the roller brush mounting frame 42. The water pump 32 is connected to the water tank 31 and the plurality of flushing nozzles 34 on the flushing frame 33 through a pipeline. The flushing nozzles 34 spray water on the roller brush to improve the cleaning rate of the roller brush.

[0033] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A dust removal and cleaning device for a coal mine scraper conveyor, characterized in that: It comprises a cleaning frame (1), and a vibration excitation mechanism (2) and a rolling brush mechanism (4) arranged on the cleaning frame (1); The cleaning frame (1) is fixedly arranged at the lower end of the scraper conveyor (5); the vibration excitation mechanism (2) comprises a vibrator (21), a guide rod (22) and a vibration excitation frame (23); the guide rod (22) is fixedly arranged on the cleaning frame (1); one end of the vibration excitation frame (23) is fixedly connected to a sleeve (24) and is connected to the guide rod (22) through the sleeve (24); a guide groove (25) is arranged on the outer side of the guide rod (22); a guide block slidably matched with the guide groove (25) is fixedly arranged in the sleeve (24); a first return spring (26) is sleeved on the guide rod (22); one end of the first return spring (26) is in contact with the sleeve (24); the other end of the first return spring (26) is in contact with the cleaning frame (1); the vibrator (21) is arranged at the other end of the vibration excitation frame (23); The roller brush mechanism (4) comprises a telescopic base frame (41), a roller brush mounting frame (42) and a roller brush (43); the lower end of the telescopic base frame (41) is hinged on the cleaning frame (1); a limit mechanism (6) is provided between one side of the telescopic base frame (41) and the cleaning frame (1); a limit switch (61) is provided between the other side of the telescopic base frame (41) and the cleaning frame (1); and a return drive (62) is provided between the telescopic base frame (41) and the limit mechanism (6); The telescopic base (41) comprises two telescopic rods which are slidably connected, a first spring (44) and a first driver (45) are arranged between the two telescopic rods, and the first spring (44) and the first driver (45) are respectively used to drive the telescopic base (41) to extend and shorten; the roller brush mounting frame (42) is arranged at the upper end of the telescopic base (41), and the roller brush (43) is rotatably arranged on the roller brush mounting frame (42) and is connected to a driving mechanism; the first driver (45) is connected to a limit switch (61) by signal.

2. A dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: The roller brush mounting frame (42) comprises a first mounting frame and a second mounting frame which are hinged to each other, the first mounting frame being fixedly connected to the telescopic base frame (41), the first mounting frame being provided with a first roller shaft (46) and a second roller shaft (47), the second mounting frame being provided with a third roller shaft (48), the first roller shaft (46), the second roller shaft (47) and the third roller shaft (48) being arranged in a U shape, and a second spring (49) being provided between the second mounting frame and the first mounting frame.

3. A dust removal and cleaning device for a coal mine scraper conveyor according to claim 2, characterized in that: The driving mechanism comprises a second driver (410); the first roller (46), the second roller (47), and the third roller (48) are connected in transmission via a belt mechanism (411); and one of the first roller (46), the second roller (47), and the third roller (48) is connected in transmission to the second driver (410).

4. A dust removal and cleaning device for a coal mine scraper conveyor according to claim 3, characterized in that: The return drive (62) comprises a second return spring, and a damper is provided at the hinge between the telescopic base frame (41) and the cleaning frame (1).

5. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: A guide wheel frame (27) is fixedly arranged on the vibration frame (23), and a guide wheel (28) is rotatably arranged on the guide wheel frame (27). The guide wheel frame (27) is located at one end of the vibration frame (23) close to the vibration exciter (21).

6. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: The invention also comprises a flushing mechanism (3), the flushing mechanism (3) comprising a water tank (31), a water pump (32), a flushing frame (33) and a flushing nozzle (34), the flushing frame (33) being fixedly arranged on a telescopic base frame (41), a plurality of flushing nozzles (34) being arranged along the length direction of the flushing frame (33), and the flushing nozzles (34) pointing to the roller brush mounting frame (42), and the water pump (32) being connected to the water tank (31) and the plurality of flushing nozzles (34) located on the flushing frame (33) through a pipeline.

7. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: The limiting mechanism (6) comprises a limiting frame, a retreat groove (63) for the telescopic base frame (41) to pass through is arranged in the middle of the limiting frame, and a limiting rod (64) cooperating with the telescopic base frame (41) is arranged at the upper end of the retreat groove (63).

8. A dust removal and cleaning device for a coal mine scraper conveyor according to claim 7, characterized in that: The limiting rod (64) is slidably connected to the limiting frame, and a handle (65) is provided at one end of the limiting rod (64).

9. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: The guide rod (22) is provided with a limiting hole (29) for inserting a limiting pin, and the limiting pin is used to limit the return of the vibration exciting frame (23).

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