A dust removal and cleaning device for a coal mine scraper conveyor

Abstract

The present invention relates to the technical field of coal mine equipment. More specifically, it relates to a dust removal and cleaning device for a coal mine scraper conveyor, which includes a cleaning frame and a vibration excitation mechanism and a rotary 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 includes 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 is connected to the guide rod through the sleeve. A guide groove is arranged on the outer side of the guide rod, and a guide block that is slidably 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 contacts the sleeve, and the other end of the first return spring contacts the cleaning frame. The vibration exciter is arranged at the other end of the vibration excitation frame. Through the synergistic effect of the vibration excitation mechanism and the rotary brush mechanism, the present invention first uses high-frequency vibration to peel off the coal powder on the surface, and then uses the rotary brush to frictionally remove the residual stubborn stains from multiple angles, forming a "vibration-brushing" dual cleaning mechanism, which significantly improves the thoroughness of cleaning.

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 a coal mine scraper conveyor, coal powder and stains are easily adhered to the surface of the scraper. Long-term accumulation will lead to an increase in the running resistance of the equipment, an increase in energy consumption, and even 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 powder, especially ineffective for coal slime or caked coal blocks with high viscosity. The traditional roller brush mechanism has problems such as insufficient contact with the scraper, limited brushing range, and lack of avoidance function, which may interfere with the normal operation of the scraper conveyor.

[0003] Therefore, it is necessary to improve the existing technology. 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 the movement of the scraper, has a self-cleaning function, and does not affect the normal operation of the conveyor.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A dust removal and cleaning device for a coal mine scraper conveyor includes a cleaning frame, and a vibration excitation mechanism and a roller brush mechanism arranged on the cleaning frame;

[0007] The cleaning frame is fixedly arranged at the lower end of the scraper conveyor. The vibration excitation mechanism includes 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 is connected to the guide rod through the sleeve. A guide groove is arranged on the outer side of the guide rod, and a guide block slidably 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 contacts the sleeve, and the other end of the first return spring contacts the cleaning frame. The vibration exciter is arranged at the other end of the vibration excitation frame;

[0008] The roller brush mechanism includes a telescopic base frame, a roller brush mounting frame, and a roller brush. The lower end of the telescopic base frame is hinged to the cleaning frame. A limiting mechanism is arranged between one side of the telescopic base frame and the cleaning frame, and a limit switch is arranged between the other side of the telescopic base frame and the cleaning frame; A return drive is arranged between the telescopic base frame and the limiting mechanism;

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Preferably, the limiting rod is slidably connected to the limiting frame, and a handle is provided at one end of the limiting rod.

[0017] 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.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the synergistic effect of the excitation mechanism and the roller brush mechanism, the present invention first uses high-frequency vibration to peel off the pulverized coal on the surface, and then uses the multi-angle friction of the roller brush to remove the remaining stubborn stains, forming a "vibration - brushing" dual cleaning mechanism, which significantly improves the cleaning thoroughness.

[0020] 2. The spiral guide groove of the guide rod and the sleeve of the present invention enables the vibrator to rotate downward synchronously when moving horizontally, and can automatically avoid the scraper after the vibration 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.

[0021] 3. The present invention adopts a U-shaped three-roll shaft layout to form a wrapped cleaning surface, which is combined with the elastic hinge structure of the second spring, and can adapt to different thickness scrapers and prevent jamming. The telescopic base frame is linked with the limit switch to realize the cyclic action of "contact - contraction - reset", and through the coordinated control of the first driver and the return spring, it ensures the dynamic fit of the roller brush and the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following will further elaborate on the specific embodiments of the present invention through the drawings.

[0023] Figure 1 is a schematic diagram of the working state of the present invention;

[0024] Figure 2 is a schematic side view structure diagram of the present invention;

[0025] Figure 3 is a schematic three-dimensional structure diagram of the present invention;

[0026] Figure 4 is a schematic structure diagram of the excitation mechanism;

[0027] Figure 5 is a schematic structure diagram of the roller brush mechanism;

[0028] Figure 6 is Figure 5 a partial enlarged view of A in

[0029] Figure 7 is a schematic cross-sectional view of the telescopic base frame.

[0030] In the figure: 1 - cleaning frame, 2 - vibration excitation mechanism, 21 - vibration exciter, 22 - guide rod, 23 - vibration excitation 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 - retraction groove, 64 - limiting rod, 65 - handle. Detailed implementation mode

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment:

[0033] As Figures 1 to 7 shown, a dust removal and cleaning device for a coal mine scraper conveyor includes a cleaning frame 1 and a vibration excitation mechanism 2 and a roller brush mechanism 4 arranged on the cleaning frame 1. The vibration excitation 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 that are difficult to vibrate off the scraper, so that they fall off.

[0034] Specifically, the cleaning frame 1 is fixedly arranged at the lower end of the scraper conveyor 5. The vibration excitation mechanism 2 includes a vibration exciter 21, a guide rod 22 and a vibration excitation frame 23. The guide rod 22 is fixedly arranged on the cleaning frame 1 in the horizontal direction. One end of the vibration excitation frame 23 is fixedly connected with a sleeve 24 and is 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 surface of the guide rod 22, and a guide block that is slidably matched with the guide groove 25 is fixedly arranged in the sleeve 24. When the sleeve 24 moves towards one end of the guide rod 22, the vibration 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 vibration excitation frame 23 can be returned by the first return spring 26. The other end of the vibration excitation frame 23 is provided with a vibration exciter 21.

[0035] When the scraper needs to be cleaned, the moving scraper first contacts the vibrator 21, and the vibrator 21 vibrates the scraper; as the scraper continues to move, it pushes the vibration frame 23 to move along the guide rod 22 and rotate downward at the same time until the vibrator 21 disengages from the scraper, completing the vibration cleaning of the scraper.

[0036] After the vibrator 21 disengages from the scraper, it returns to the initial position under the drive of 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 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 vibrator 21. By contacting the lower end of the scraper conveyor with the guide wheel 28, the impact on the body of the vibrator 21 is reduced.

[0037] In order to prevent the vibrator 21 from interfering with the movement of the scraper during the normal operation of the scraper conveyor 5, a limit hole 29 for inserting a limit pin is provided on the guide rod 22. Move the vibration frame 23 to make the vibrator 21 under the scraper, insert the limit pin into the limit hole 29, and limit the return of the vibration frame 23, then the position of the vibrator 21 can be restricted.

[0038] The rotary brush mechanism 4 includes a telescopic base frame 41, a roller brush mounting frame 42 and a rotary brush 43. The lower end of the telescopic base frame 41 is hinged to the cleaning frame 1. A limit mechanism 6 is provided between one side of the telescopic base frame 41 and the cleaning frame 1 to limit the maximum angle of rotation of the telescopic base frame 41 to this side. A limit switch 61 is provided between the other side of the telescopic base frame 41 and the cleaning frame 1.

[0039] The telescopic base frame 41 includes two telescopic rods connected in a sliding manner. 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 frame 41 to extend and shorten. The first driver 45 can adopt a linear motor. The first driver 45 is signal-connected to the limit switch 61. A return driver 62 is provided between the telescopic base frame 41 and the limit mechanism 6. When the telescopic base frame 41 touches the limit switch 61, the first driver 45 drives the telescopic base frame 41 to shorten. At this time, the telescopic base frame 41 rotates to the other side under the drive of the return driver 62. Preferably, the return driver 62 adopts a second return spring, and a damper is provided at the hinge of the telescopic base frame 41 and the cleaning frame 1. The return speed of the telescopic base frame 41 is slowed down by the damper to reduce the impact.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The flushing mechanism 3 includes a water tank 31, a water pump 32, a flushing rack 33 and flushing nozzles 34. The flushing rack 33 is fixedly arranged on the telescopic base frame 41. A plurality of flushing nozzles 34 are arranged along the length direction of the flushing rack 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 a plurality of flushing nozzles 34 located on the flushing rack 33 through pipelines. The roller brush is sprayed with water through the flushing nozzles 34 to improve the cleaning rate of the roller brush.

[0045] Only the preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention, and all such changes should be included within 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. The 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. The 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. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 3, wherein: 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 excitation frame (23), a guide wheel (28) is rotatably arranged on the guide wheel frame (27), and the guide wheel frame (27) is located at one end of the excitation frame (23) close to the exciter (21).

6. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: It further includes a flushing mechanism (3), the flushing mechanism (3) includes a water tank (31), a water pump (32), a flushing frame (33) and flushing nozzles (34). The flushing frame (33) is fixedly arranged on the 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 a plurality of flushing nozzles (34) located on the flushing frame (33) through pipelines.

7. The dust removal and cleaning device for a coal mine scraper conveyor according to claim 1, characterized in that: The limiting mechanism (6) includes a limiting frame, a yielding 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) matched with the telescopic base frame (41) is arranged at the upper end of the yielding 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 with the limiting frame, and a handle (65) is arranged 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: A limiting hole (29) for inserting a limiting pin is arranged on the guide rod (22), and the limiting pin is used for restricting the return of the excitation frame (23).

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