Scraping mechanism for self-moving tail of belt conveyor

Abstract

The utility model belongs to the technical field of coal mining, in particular to a scraping mechanism of a self-moving tail of a belt conveyor, which comprises two cross beams, a traction mechanism, a rack, a first guide roller, a second guide roller, a third guide roller, a slag scraping mechanism and a guide plate, the traction mechanism is transversely and fixedly connected to the right end of the cross beam; the rack is fixedly connected to the right end of the traction mechanism; the first guide roller is rotatably mounted in the center of the top of the rack and supports the conveying belt; the two second guide rollers are rotatably installed at the front end and the rear end of the top of the rack correspondingly, and the conveying belt is limited through the second guide rollers. The third guide roller can be rotationally installed at the bottom of the rack, and the conveying belt guiding effect is achieved through the third guide roller. The conveying belt stretching function is achieved, stagnation is prevented when the conveying belt conveys materials, scraping of the conveying belt is achieved, slag is prevented from falling off randomly and polluting the environment, and materials can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and particularly relates to a scraping mechanism for a self - moving tail of a belt conveyor. Background Art

[0002] The self - moving tail of the belt conveyor is a mobile device used in combination with the belt conveyor and the transfer machine in the fully - mechanized coal mining and tunneling face of the coal mine. It is applicable to the high - yield and high - efficiency working face of the coal mine, can quickly advance the belt, and has functions such as height adjustment, deviation adjustment, and self - movement.

[0003] During the process of transporting coal blocks by the belt, affected by the gravity of the coal blocks, the belt will gradually elongate, resulting in the loosening of the belt conveyor. When the belt conveys coal blocks, it is prone to stagnation, and the conveying stability decreases. In addition, when the belt conveyor works, it will generate vibration, and the slag on the belt surface will fall randomly, which will not only cause environmental pollution but also waste resources. Therefore, it is necessary to provide a scraping mechanism for the self - moving tail of a belt conveyor. Summary of the Utility Model

[0004] To solve the problems of inability to stretch the belt, poor belt conveying stability, and inability to scrape the belt proposed in the above - mentioned background art, the utility model provides a scraping mechanism for a self - moving tail of a belt conveyor.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: A scraping mechanism for a self - moving tail of a belt conveyor includes two cross - beams. The left end of the cross - beam is connected to the belt conveyor through a pin shaft. It also includes a traction mechanism, a frame, a first guide roller, a second guide roller, a third guide roller, a slag scraping mechanism, and a guide plate. The traction mechanism is horizontally and fixedly connected to the right end of the cross - beam; the frame is fixedly connected to the right end of the traction mechanism; the first guide roller is rotatably installed at the center of the top of the frame to support the conveyor belt; the number of the second guide rollers is two, which are respectively rotatably installed at the front and rear ends of the top of the frame to limit the conveyor belt through the second guide rollers; the third guide roller is rotatably installed at the bottom of the frame to play a role in guiding the conveyor belt; the slag scraping mechanism is installed at the bottom of the frame in the front - to - back direction, and the slag scraping mechanism is located at the bottom of the third guide roller; the guide plate is inclined and installed at the bottom of the slag scraping mechanism.

[0006] Preferably, the traction mechanism includes a channel steel, a first motor, a first rotating shaft, a driving bevel gear, a lead screw, a driven bevel gear, and a telescopic rod. The channel steel is horizontally and fixedly connected to the right end of the cross beam. The first motor is installed at the left end of the front side of the channel steel. One end of the first rotating shaft is installed at the output end of the first motor, and the other end is connected to the front side of the channel steel at the rear side through a bearing. The number of driving bevel gears is two, which are respectively installed at the front and rear ends of the outer wall of the first rotating shaft. The lead screw is installed in the left cavity of the channel steel through a bearing and can rotate around its own axis. The driven bevel gear is installed at the left end of the lead screw, and the driven bevel gear is meshed and connected with the driving bevel gear. The telescopic rod is screwed on the outer wall of the lead screw, and the telescopic rod is adaptively inserted into the inner cavity of the channel steel. The right end of the telescopic rod is fixedly connected to the left side wall of the frame.

[0007] Preferably, the two driving bevel gears have the same direction on the first rotating shaft.

[0008] Preferably, the slag scraping mechanism includes a housing, a second rotating shaft, spur gears, guide rods, counterweight blocks, lifting rods, racks, and a rotating assembly. The housing is fixedly connected to the bottom of the frame in the front-rear direction. The second rotating shaft is installed in the middle of the inner cavity of the housing through a bearing and can rotate around its own axis in the front-rear direction. The number of spur gears is two, which are respectively installed at the front and rear ends of the outer wall of the second rotating shaft. The number of guide rods is two, which are respectively inserted into the front and rear ends of the inner cavity of the housing. The counterweight blocks are sleeved on the outer walls of the guide rods. The number of lifting rods is two, which are respectively inserted into the front and rear ends of the upper surface of the housing. The number of racks is four, which are respectively installed at the front and rear ends on the right side of the counterweight blocks and the left side of the lifting rods, and the racks are meshed and connected with the spur gears, and the racks descend under the action of the gravity of the counterweight blocks. The rotating assembly is fixedly connected to the top ends of the lifting rods.

[0009] Preferably, the rotating assembly is located directly below the third guide roller.

[0010] Preferably, the rotating assembly includes a support seat, a second motor, and a rotary brush. The support seat is fixedly connected to the top ends of the lifting rods. The second motor is installed on the front side of the support seat. One end of the rotary brush is installed at the output end of the second motor, and the other end is connected to the rear side of the inner cavity of the support seat through a bearing.

[0011] Preferably, the height of the rotary brush is higher than that of the support seat.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The first motor drives the first rotating shaft to rotate. Under the transmission of the driving bevel gear and the driven bevel gear, the lead screw rotates clockwise. The threaded rotational force of the lead screw drives the telescopic rod to move to the right, stretching the conveyor belt, and improving the friction between the conveyor belt and the first guide roller, the second guide roller, and the third guide roller. Therefore, it has the function of stretching the conveyor belt and preventing the conveyor belt from stagnating when conveying materials.

[0013] Under the action of the gravity of the counterweight, the rack moves downward. Driven by the rack and the spur gear, the lifting rod moves upward, bringing the brush into contact with the surface of the conveyor belt. The second motor drives the brush to rotate, removing the slag on the surface of the conveyor belt, realizing scraping of the conveyor belt, preventing the slag from falling randomly and polluting the environment, and saving materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0015] Figure 1 is a schematic structural view of the present invention;

[0016] Figure 2 is a schematic structural view of the frame of the present invention;

[0017] Figure 3 is a top view sectional view of the traction mechanism of the present invention;

[0018] Figure 4 is a schematic structural view of the slag scraping mechanism of the present invention;

[0019] Figure 5 is a front view sectional view of the slag scraping mechanism of the present invention.

[0020] In the figure: 1, cross beam; 2, traction mechanism; 3, frame; 4, first guide roller; 5, second guide roller; 6, third guide roller; 7, slag scraping mechanism; 8, guide plate; 21, channel steel; 22, first motor; 23, first rotating shaft; 24, driving bevel gear; 25, lead screw; 26, driven bevel gear; 27, telescopic rod; 71, housing; 72, second rotating shaft; 73, spur gear; 74, guide rod; 75, counterweight; 76, lifting rod; 77, rack; 78, rotating assembly; 781, support seat; 782, second motor; 783, brush. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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.

[0022] Please refer to Figures 1-5, the present utility model provides the following technical solution: A scraping mechanism for a self - moving tail of a belt conveyor, comprising two cross - beams 1. The left side of the cross - beam 1 is connected to the belt conveyor through a pin shaft, and the right end of the top of the cross - beam 1 is connected to the belt conveyor through a hydraulic cylinder. When the hydraulic cylinder expands and contracts, the cross - beam 1 can swing downward or upward. A traction mechanism 2 is fixedly connected to the right end of the cross - beam 1, and a frame 3 is fixedly connected to the right end of the traction mechanism 2. A rotatable first guide roller 4 is installed at the center of the top of the frame 3, and rotatable second guide rollers 5 are installed on both the front and back sides of the top of the frame 3. The inclined surface of the second guide roller 5 serves as a wire guiding function to prevent the conveyor belt from shifting. A rotatable third guide roller 6 is installed at the bottom of the frame 3, and a slag scraping mechanism 7 is installed at the bottom of the frame 3, and the slag scraping mechanism 7 is located at the bottom of the third guide roller 6. An inclined guide plate 8 is installed at the bottom of the slag scraping mechanism 7, and the guide plate 8 can make the slag material cleaned from the conveyor belt slide down.

[0023] Specifically, the traction mechanism 2 includes a channel steel 21 fixedly connected to the right end of the cross - beam 1. A first motor 22 is installed at the left end of the front side of the channel steel 21. One end of a first rotating shaft 23 is installed at the output end of the first motor 22, and the other end of the first rotating shaft 23 is connected to the front side of the channel steel 21 at the back through a bearing. Active bevel gears 24 are installed at both the front and back ends of the outer wall of the first rotating shaft 23. A lead screw 25 capable of rotating around its own axis is installed at the left side of the inner cavity of the channel steel 21 through a bearing. A driven bevel gear 26 meshing with the active bevel gear 24 is installed at the left end of the lead screw 25. The two active bevel gears 24 have the same direction. When the active bevel gear 24 and the driven bevel gear 26 are in transmission, the two lead screws 25 can rotate in the same direction. An expansion rod 27 is screwed on the outer wall of the lead screw 25, and the expansion rod 27 is adaptively inserted into the inner wall of the channel steel 21. When the lead screw 25 rotates clockwise or counter - clockwise, the screw - thread rotational force of the lead screw 25 can drive the expansion rod 27 to move left or right.

[0024] Specifically, the slag scraping mechanism 7 includes a housing 71 installed at the bottom of the frame 3. A second rotating shaft 72 capable of rotating around its own axis is installed at the middle of the inner cavity of the housing 71 through a bearing. Straight gears 73 are installed at both the front and back ends of the outer wall of the second rotating shaft 72. Guide rods 74 are installed at both the front and back ends of the inner cavity of the housing 71. A counterweight block 75 capable of sliding up and down is sleeved on the outer wall of the guide rod 74. Lifting rods 76 are inserted into both the front and back ends of the upper surface of the housing 71. Rack teeth 77 are installed on both the front and back ends of the right side wall of the counterweight block 75 and the left side wall of the lifting rod 76, and the rack teeth 77 are meshed with the straight gears 73. Under the action of the gravity of the counterweight block 75, the rack teeth 77 move downward. Under the rotation of the straight gears 73, the rack teeth 77 drive the lifting rod 76 to move upward. A rotating assembly 78 is fixedly connected to the top of the lifting rod 76, and the rotating assembly 78 is located directly below the third guide roller 6. When the conveyor belt moves, the rotating assembly 78 can clean the surface of the conveyor belt passing through the third guide roller 6.

[0025] Specifically, the rotating assembly 78 includes a support base 781 fixedly connected to the top of the lifting rod 76. A second motor 782 is installed on the front of the support base 781. One end of a rotary brush 783 is installed at the output end of the second motor 782, and the other end of the rotary brush 783 is connected to the rear side of the inner cavity of the support base 781 through a bearing. The height of the rotary brush 783 is higher than that of the support base 781, enabling the rotary brush 783 to contact the conveyor belt. The slag on the surface of the conveyor belt is cleaned by the rotation of the rotary brush 783.

[0026] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0027] Step 1: The first motor 22 drives the driving bevel gear 24 to rotate clockwise. Under the transmission of the driving bevel gear 24 and the driven bevel gear 26, the lead screw 25 rotates counterclockwise. The threaded rotational force of the lead screw 25 drives the telescopic rod 27 to move to the right, thereby moving the frame 3 to the right, stretching the conveyor belt, increasing the friction between the first guide roller 4, the second guide roller 5, and the third guide roller 6 and the conveyor belt, and preventing the conveyor belt from pausing.

[0028] Step 2: Under the action of the gravity of the counterweight 75, the rack 77 descends. The spur gear 73 rotates counterclockwise, and the rack 77 drives the lifting rod 76 to rise. The rotary brush 783 always contacts the conveyor belt. The second motor 782 drives the rotary brush 783 to rotate, and the rotary brush 783 removes the slag on the surface of the conveyor belt to prevent the slag from falling randomly.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A scraping mechanism for a self - moving tail of a belt conveyor, comprising two cross beams (1), the left end of the cross beam (1) is connected to the belt conveyor through a pin shaft, and is characterized in that, Further included are: A traction mechanism (2), horizontally and fixedly connected to the right end of the cross beam (1); A frame (3), fixedly connected to the right end of the traction mechanism (2); A first guide roller (4), rotatably installed at the center of the top of the frame (3), and the first guide roller (4) supports the conveyor belt; Two second guide rollers (5), respectively rotatably installed at the front and rear ends of the top of the frame (3), and the conveyor belt is limited by the second guide rollers (5); A third guide roller (6), rotatably installed at the bottom of the frame (3), and the third guide roller (6) plays a role in guiding the conveyor belt; A slag scraping mechanism (7), installed at the bottom of the frame (3) in the front-rear direction, and the slag scraping mechanism (7) is located at the bottom of the third guide roller (6); A guide plate (8), inclinedly installed at the bottom of the slag scraping mechanism (7).

2. The scraping mechanism of a belt conveyor self-shifting tailstock according to claim 1, characterized in that The traction mechanism (2) includes: A channel steel (21), horizontally and fixedly connected to the right end of the cross beam (1); A first motor (22), installed at the left end of the front side of the channel steel (21); A first rotating shaft (23), one end installed at the output end of the first motor (22), and the other end connected to the front side of the channel steel (21) at the rear through a bearing; Two active bevel gears (24), respectively installed at the front and rear ends of the outer wall of the first rotating shaft (23); A lead screw (25), rotatably installed in the left cavity of the channel steel (21) through a bearing around its own axis; A driven bevel gear (26), installed at the left end of the lead screw (25), and the driven bevel gear (26) is meshed and connected with the active bevel gear (24); An expansion rod (27), screwed on the outer wall of the lead screw (25), and the expansion rod (27) is adaptively inserted into the cavity of the channel steel (21), and the right end of the expansion rod (27) is fixedly connected to the left side wall of the frame (3).

3. The scraping mechanism of a belt conveyor self-shifting tailstock according to claim 2, characterized in that, The directions of the two active bevel gears (24) on the first rotating shaft (23) are the same.

4. The scraping mechanism of a belt conveyor self-shifting tailstock according to claim 1, characterized in that, The slag scraping mechanism (7) includes: A housing (71), fixedly connected to the bottom of the frame (3) in the front-rear direction; A second rotating shaft (72), rotatably installed in the middle of the inner cavity of the housing (71) through a bearing around its own axis in the front-rear direction; Two spur gears (73), respectively installed at the front and rear ends of the outer wall of the second rotating shaft (72); Two guide rods (74), respectively inserted into the front and rear ends of the inner cavity of the housing (71); A counterweight block (75), sleeved on the outer wall of the guide rod (74); Two lifting rods (76), respectively inserted into the front and rear ends of the upper surface of the housing (71); Four racks (77), respectively installed at the front and rear ends on the right side of the counterweight block (75) and the left side of the lifting rod (76), and the racks (77) are meshed and connected with the spur gears (73), and the racks (77) descend under the action of the gravity of the counterweight block (75); A rotating assembly (78), fixedly connected to the top end of the lifting rod (76).

5. The scraping mechanism of a belt conveyor self - shifting tailstock according to claim 4, characterized in that, The rotating assembly (78) is located directly below the third guide roller (6).

6. The scraping mechanism of a belt conveyor self - moving tailstock according to claim 4, characterized in that, The rotating assembly (78) includes: A support seat (781), fixedly connected to the top end of the lifting rod (76); The second motor (782) is installed on the front of the support base (781); One end of the rotary brush (783) is installed at the output end of the second motor (782), and the other end is connected to the rear side of the inner cavity of the support base (781) through a bearing.

7. The scraping mechanism of the self - moving tail of a belt conveyor according to claim 6, characterized in that, The height of the rotary brush (783) is higher than that of the support base (781).

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