Improved coal mine conveyor

Abstract

This invention discloses an improved coal mine conveying device, relating to the field of coal conveying technology. It includes a base and a screening device. A conveying device is fixedly installed on the surface of the base, and a support frame is fixedly installed on the top of the base. The screening device includes a first gear, an L-shaped rod, a hollow frame, a slider, a connecting block, a spring, a rotating block, a screen plate, a limiting block, and a guide plate. When the first gear rotates, it drives the second gear to rotate, which in turn drives the connecting shaft to rotate, which in turn drives the brush to rotate. The first gear is fixedly installed at the output end of the conveying device. The L-shaped rod is fixedly installed on the surface of the first gear. The hollow frame is fixedly installed on the surface of the base. The slider is slidably installed on the inner wall of the hollow frame. The connecting block is fixedly installed on the surface of the L-shaped rod. The rotation of the L-shaped rod causes the screen plate to reciprocate, separating coal of different sizes on the screen plate.

Description

Technical Field

[0001] This invention relates to the field of coal conveying technology, specifically to an improved coal mine conveying device. Background Technology

[0002] A coal mine is a place rich in coal resources. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, it is generally chosen to excavate tunnels underground to mine the coal. This is called an underground coal mine. When the coal seam is very close to the surface, it is generally chosen to directly strip the surface soil layer to mine the coal. This is called an open-pit coal mine. After the coal is mined, it needs to be transported. Usually, a conveyor belt is used for transportation.

[0003] Patent publication number CN217894112U relates to an improved coal mine conveying device, belonging to the field of coal mine conveying. It includes a mounting frame with a drive roller mounted on its top and a transmission roller mounted on one side of the top of the frame. A belt is fitted around the outer walls of the drive roller and the transmission roller. An inclined plate is fixed to one side of the mounting frame, and a support plate is fixed below the inclined plate on another side of the mounting frame. A screen plate is movably mounted on the top of the support plate. A turntable is fitted around one side of the drive roller. This patent facilitates coal screening. The coal conveyor belt drives the cleaning components in reciprocating motion, while the connecting rod moves the screen plate, allowing the screen plate to screen the coal. Smaller coal particles are screened and then conveyed via pulleys, while larger particles are conveyed separately. This separates and conveys coal of different sizes, avoiding the problems associated with traditional screening mechanisms and improving work efficiency.

[0004] In the aforementioned patent, the screen plate is moved by the connecting rod, thereby enabling the screen plate to screen the coal. Small coal particles are screened and then conveyed by a belt pulley, while large particles are conveyed separately. This separates and conveys coal of different sizes, avoiding the problem of screening by a screening mechanism and improving work efficiency. However, during the screening process, large coal particles may accumulate together, which can cause the coal particles to block the screening opening and affect the screening effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an improved coal mine conveying device that solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an improved coal mine conveying device, comprising a base and a screening device. A conveying device is fixedly mounted on the surface of the base, and a support frame is fixedly mounted on the top of the base. The screening device includes a first gear, an L-shaped rod, a hollow frame, a slider, a connecting block, a spring, a rotating block, a screen plate, a limiting block, and a guide plate. The rotation of the conveying device drives the first gear to rotate, which in turn drives the L-shaped rod to rotate. The rotation of the L-shaped rod drives the connecting block to rotate, which in turn pulls a connecting rope to move. The movement of the connecting rope pulls the slider towards the base. The first gear is fixedly mounted at the output end of the conveying device, and the L-shaped rod is fixedly mounted on the top of the base. The screen plate is fixedly mounted on the surface of the first gear, the hollow frame is fixedly mounted on the surface of the base, the slider is slidably mounted on the inner wall of the hollow frame, the connecting block is fixedly mounted on the surface of the L-shaped rod, the slider and the connecting block are connected by a connecting rope, one end of the spring is fixedly mounted on the surface of the hollow frame, the other end of the spring is fixedly mounted on the surface of the slider, the rotating block is fixedly mounted on the surface of the slider, the screen plate is rotatably mounted on the surface of the rotating block, the limiting block is fixedly mounted on the surface of the screen plate, and the guide plate is fixedly mounted on the top of the screen plate; wherein, the screen plate is provided with an tilting device for adjusting its own angle, and when the screen plate reciprocates, it will contact the spring, and the spring will provide a buffer to the slider to prevent the screen plate from sieving too frequently when pulled.

[0007] According to the above technical solution, the surface of the sieve plate is provided with sieve holes, the rotating block is provided with a short plate, and a torsion spring is provided between the rotating block and the sieve plate.

[0008] According to the above technical solution, the tilting device includes an L-shaped frame, a round rod, an arc-shaped slide rail, a protrusion, a hollow block, and a sliding block. When the sieve plate moves towards the base, it drives the L-shaped frame to move towards the base. The movement of the L-shaped frame towards the base drives the round rod to move towards the base. The L-shaped frame is fixedly installed at the bottom of the sieve plate, the round rod is fixedly installed on the surface of the L-shaped frame, the arc-shaped slide rail is fixedly installed on the inner wall of the base, the protrusion is fixedly installed on the top of the arc-shaped slide rail, the hollow block is fixedly installed on the surface of the L-shaped frame, and the sliding block is installed inside the hollow block. During the downward sliding of the L-shaped frame, it drives the sliding block to slide downward, and the sliding block contacts the protrusion when it slides downward.

[0009] According to the above technical solution, the round rod slides on the inner wall of the arc-shaped slide rail, and a No. 1 spring is provided between the sliding block and the hollow block, which drives the sliding block to reset.

[0010] According to the above technical solution, it also includes a cleaning device and a protection device. The cleaning device includes a second gear, a connecting shaft, and a brush. The rotation of the first gear will drive the second gear to rotate, the rotation of the second gear will drive the connecting shaft to rotate, and the rotation of the connecting shaft will drive the brush to rotate. The second gear is rotatably mounted on the surface of the base. The second gear meshes with the surface of the first gear. The connecting shaft is fixedly mounted on the surface of the second gear, and the brush is fixedly mounted on the surface of the connecting shaft.

[0011] According to the above technical solution, a transmission shaft is rotatably mounted inside the base, and one end of a belt is driven onto the transmission shaft. The other end of the belt is driven onto the surface of a connecting shaft, and a triangular block is fixedly mounted on the surface of the transmission shaft. Rotation of the connecting shaft will drive the belt to rotate, which in turn will drive the transmission shaft to rotate, which will then drive the triangular block to rotate, causing the triangular block to come into contact with the brush.

[0012] According to the above technical solution, the protection device includes a motor, a limiting plate, a baffle, and an elastic plate. When too much coal is screened on the screen plate, the motor is started. The rotation of the motor will drive the limiting plate to rotate, and the rotation of the limiting plate will restrict the coal on the conveying device. The motor is fixedly installed on the base surface, the limiting plate is fixedly installed on the output end of the motor, the baffle is fixedly installed on the base surface, and the elastic plate is fixedly installed on the baffle surface. The baffle and the elastic plate can prevent the conveying device from conveying too fast, causing the coal to fly out. The elastic plate can buffer the coal when it falls.

[0013] According to the above technical solution, the baffle is disposed on the top of the screen plate, the elastic plate is elastic, and the limiting plate is disposed on the top of the conveying device.

[0014] This invention provides an improved coal mine conveying device. It has the following beneficial effects:

[0015] (1) In this invention, the first gear is driven to rotate by the rotation of the conveying device, and the screen plate is driven to reciprocate by the rotation of the first gear, which distinguishes coal mines of different sizes and improves work efficiency. At the same time, when the L-shaped rod pulls the slider, it will contact the spring, and the spring will buffer the slider to prevent the screen plate from moving too fast when it is pulled, which would cause the coal to splash out and affect the screening of the coal.

[0016] (2) In this invention, the reciprocating motion of the screen plate will drive the L-shaped frame to move towards the base. The movement of the L-shaped frame towards the base will drive the round rod to move towards the base. The round rod will rotate downward along the arc-shaped slide rail, while driving the screen plate to rotate upward, preventing the coal ore from accumulating together and resulting in poor screening effect. At the same time, when the screen plate rotates upward, it will contact the protrusion. The vibration generated by contacting the protrusion can shake the coal ore stuck in the screen hole, thereby improving the overall screening efficiency.

[0017] (3) The invention works by rotating the conveying device to drive the connecting shaft to rotate, which in turn drives the brush to rotate. The brush cleans the debris adhering to the bottom of the conveying device, preventing the debris from sticking to the conveying device and falling into the conveying device, causing equipment failure. The rotating connecting shaft drives the belt to rotate, which in turn drives the transmission shaft to rotate. The triangular block knocks the debris adhering to the brush off, preventing too much debris from sticking to the brush and affecting the cleaning effect of the brush.

[0018] (4) In this invention, the limiting plate is driven by a motor to rotate, so that the limiting plate can block the coal on the conveying device, preventing coal from continuously entering the screen plate when the size is being screened, resulting in too much coal on the screen plate, which would block the screen holes and affect the screening effect. At the same time, the baffle and elastic plate can prevent the conveying device from conveying too fast, causing the coal to fly out. The elastic plate can buffer the coal when it falls, preventing the coal from being broken and affecting the integrity of the coal. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the hollow frame of the present invention;

[0022] Figure 4 This is a schematic diagram of the sieve plate structure of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of section A in the middle;

[0024] Figure 6 This is a schematic diagram of the position and structure of the sieve plate and brush in this invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of section B;

[0026] Figure 8 This is a schematic diagram of the cleaning device of the present invention;

[0027] Figure 9 This is a schematic diagram of the L-shaped frame and arc-shaped slide rail structure of the present invention.

[0028] In the diagram: 1. Base; 2. Conveying device; 3. Support frame; 4. Gear No. 1; 5. L-shaped rod; 6. Hollow frame; 7. Slider; 8. Connecting block; 9. Spring; 10. Rotating block; 11. Screen plate; 12. Limiting block; 13. Guide plate; 141. L-shaped frame; 142. Round rod; 143. Arc-shaped slide rail; 144. Protrusion; 145. Hollow block; 146. Sliding block; 151. Gear No. 2; 152. Connecting shaft; 153. Brush; 154. Belt; 155. Transmission shaft; 156. Triangular block; 161. Motor; 162. Limiting plate; 163. Baffle; 164. Elastic plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-5 One embodiment of the present invention is as follows: an improved coal mine conveying device, including a base 1 and a screening device. A conveying device 2 is fixedly installed on the surface of the base 1, and a support frame 3 is fixedly installed on the top of the base 1. The screening device includes a first gear 4, an L-shaped rod 5, a hollow frame 6, a slider 7, a connecting block 8, a spring 9, a rotating block 10, a screen plate 11, a limiting block 12, and a guide plate 13. The L-shaped rod 5 rotates to cause the screen plate 11 to reciprocate, thereby sorting coal of different sizes on the screen plate 11. The first gear 4 is fixedly installed at the output end of the conveying device 2, the L-shaped rod 5 is fixedly installed on the surface of the first gear 4, and the hollow frame 6 is fixedly installed on the base. 1. On the surface, slider 7 is slidably installed on the inner wall of hollow frame 6, connecting block 8 is fixedly installed on the surface of L-shaped rod 5, slider 7 and connecting block 8 are connected by connecting rope, one end of spring 9 is fixedly installed on the surface of hollow frame 6, the other end of spring 9 is fixedly installed on the surface of slider 7, rotating block 10 is fixedly installed on the surface of slider 7, screen plate 11 is rotatably installed on the surface of rotating block 10, limiting block 12 is fixedly installed on the surface of screen plate 11, and guide plate 13 is fixedly installed on the top of screen plate 11; wherein, screen plate 11 is provided with an tilting device to adjust its own angle to prevent the screen plate 11 from rotating too fast when pulled, causing coal to splash out and affecting the screening of coal.

[0031] The sieve plate 11 has sieve holes on its surface, the rotating block 10 has a short plate, and a torsion spring is provided between the rotating block 10 and the sieve plate 11. The sieve plate 11 is reset by the torsion spring.

[0032] The tilting device includes an L-shaped frame 141, a round rod 142, an arc-shaped slide rail 143, a protrusion 144, a hollow block 145, and a sliding block 146. By adjusting the angle of the screen plate 11, it prevents coal ore from accumulating during the reciprocating motion of the screen plate 11, which would otherwise lead to a deterioration in screening efficiency. The L-shaped frame 141 is fixedly installed at the bottom of the screen plate 11, the round rod 142 is fixedly installed on the surface of the L-shaped frame 141, the arc-shaped slide rail 143 is fixedly installed on the inner wall of the base 1, the protrusion 144 is fixedly installed on the top of the arc-shaped slide rail 143, the hollow block 145 is fixedly installed on the surface of the L-shaped frame 141, and the sliding block 146 is installed inside the hollow block 145. Vibration is generated by the contact between the sliding block 146 and the protrusion 144, causing the coal ore stuck in the screen holes to shake off, thereby improving the overall screening efficiency.

[0033] The round rod 142 slides on the inner wall of the arc-shaped slide rail 143. A first spring is provided between the sliding block 146 and the hollow block 145. The first spring drives the sliding block 146 to reset.

[0034] In this embodiment, the rotation of the conveying device 2 drives the first gear 4 to rotate, which in turn drives the L-shaped rod 5 to rotate. The L-shaped rod 5 then drives the connecting block 8 to rotate, which in turn pulls the connecting rope to move. The moving connecting rope then pulls the slider 7 towards the base 1, which in turn drives the rotating block 10 towards the base 1. The rotating block 10 then drives the screen plate 11 towards the base 1. The rotation of the L-shaped rod 5 causes the screen plate 11 to reciprocate, sorting coal of different sizes on the screen plate 11. At the same time, when the screen plate 11 reciprocates, it contacts the spring 9, which provides a buffer to the slider 7, preventing the screen plate 11 from rotating too fast and causing coal to splash out, thus affecting the screening of the coal.

[0035] When the screen plate 11 moves closer to the base 1, it will drive the L-shaped frame 141 to move closer to the base 1. The movement of the L-shaped frame 141 closer to the base 1 will drive the round rod 142 closer to the base 1. The round rod 142 will slide downward along the arc-shaped slide rail 143. The downward sliding of the round rod 142 along the arc-shaped slide rail 143 will cause the screen plate 11 to rotate upward. By adjusting the angle of the screen plate 11, the coal ore will not accumulate when the screen plate 11 reciprocates, which would lead to a deterioration in the screening effect. At the same time, during the downward sliding of the L-shaped frame 141, the sliding block 146 will slide downward. The downward sliding of the sliding block 146 will contact the protrusion 144. The contact between the sliding block 146 and the protrusion 144 will generate vibration, causing the coal ore stuck in the screen hole to shake off, thereby improving the overall screening efficiency.

[0036] Please see Figure 1-9Based on the above embodiments, another embodiment of the present invention further includes a cleaning device and a protection device. The cleaning device includes a second gear 151, a connecting shaft 152, and a brush 153. The second gear 151 is rotatably mounted on the surface of the base 1 and meshes with the surface of the first gear 4. The connecting shaft 152 is fixedly mounted on the surface of the second gear 151, and the brush 153 is fixedly mounted on the surface of the connecting shaft 152 to prevent coal slag from getting stuck in the conveying equipment during the conveying process, which could cause equipment failure and affect the normal use of the equipment.

[0037] A transmission shaft 155 is rotatably mounted inside the base 1, and one end of a belt 154 is driven by the transmission shaft 155. The other end of the belt 154 is driven by the connecting shaft 152. A triangular block 156 is fixedly mounted on the surface of the transmission shaft 155. By striking the brush 153, the debris adhering to the brush 153 is cleaned off, preventing coal slag from getting stuck in the brush 153 and affecting the subsequent cleaning effect of the brush 153.

[0038] The protective device includes a motor 161, a limiting plate 162, a baffle 163, and an elastic plate 164. It prevents coal from continuously entering the screen plate 11 during screening, thus avoiding excessive coal accumulation and potential screen blockage, which would affect the screening effect. The motor 161 is fixedly mounted on the surface of the base 1, the limiting plate 162 is fixedly mounted on the output end of the motor 161, the baffle 163 is fixedly mounted on the surface of the base 1, and the elastic plate 164 is fixedly mounted on the surface of the baffle 163 to prevent the coal from being broken and affecting its integrity.

[0039] Baffle 163 is set on top of screen plate 11, elastic plate 164 is elastic, and limiting plate 162 is set on top of conveying device 2.

[0040] In this embodiment, when gear 4 rotates, it drives gear 2 151 to rotate. Gear 2 151 rotates, which in turn drives connecting shaft 152 to rotate. Connecting shaft 152 rotates, which in turn drives brush 153 to rotate. Brush 153 can clean the coal slag adhering to the conveying device 2, preventing coal slag from getting stuck in the conveying equipment during the conveying process, which could cause equipment failure and affect normal operation. At the same time, the rotation of connecting shaft 152 drives belt 154 to rotate, which in turn drives transmission shaft 155 to rotate. Transmission shaft 155 rotates, which drives triangular block 156 to rotate. Triangular block 156 rotates and comes into contact with brush 153. By tapping brush 153, the debris adhering to brush 153 is cleaned off, preventing coal slag from getting stuck in brush 153 and affecting the subsequent cleaning effect of brush 153.

[0041] When there is too much coal being screened on the screen plate 11, the motor 161 is started. The rotation of the motor 161 will drive the limit plate 162 to rotate. The rotation of the limit plate 162 will restrict the coal on the conveying device 2, preventing coal from continuously entering the screen plate 11 during screening, which would result in too much coal on the screen plate 11, causing the coal to block the screen holes and affecting the screening effect. At the same time, the baffle 163 and the elastic plate 164 can prevent the conveying device 2 from conveying too fast, causing the coal to fly out. The elastic plate 164 can buffer the coal when it falls, preventing it from breaking and affecting the integrity of the coal.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved coal mine conveying device, comprising a base (1), characterized in that: It also includes a screening device, a conveying device (2) is fixedly installed on the surface of the base (1), and a support frame (3) is fixedly installed on the top of the base (1). The screening device includes a first gear (4), an L-shaped rod (5), a hollow frame (6), a slider (7), a connecting block (8), a spring (9), a rotating block (10), a screen plate (11), a limiting block (12), and a guide plate (13). The first gear (4) is fixedly installed at the output end of the conveying device (2). The L-shaped rod (5) is fixedly installed on the surface of the first gear (4). The hollow frame (6) is fixedly installed on the surface of the base (1). The slider (7) is slidably installed on the inner wall of the hollow frame (6). The connecting block (8) 8) Fixedly installed on the surface of the L-shaped rod (5), the slider (7) and the connecting block (8) are connected by a connecting rope, one end of the spring (9) is fixedly installed on the surface of the hollow frame (6), the other end of the spring (9) is fixedly installed on the surface of the slider (7), the rotating block (10) is fixedly installed on the surface of the slider (7), the sieve plate (11) is rotatably installed on the surface of the rotating block (10), the limiting block (12) is fixedly installed on the surface of the sieve plate (11), and the guide plate (13) is fixedly installed on the top of the sieve plate (11); The sieve plate (11) is equipped with an inclining device that adjusts its own angle. The sieve plate (11) has sieve holes on its surface, a short plate is fixedly installed on the rotating block (10), and a torsion spring is provided between the rotating block (10) and the sieve plate (11). The tilting device includes an L-shaped frame (141), a round rod (142), an arc-shaped slide rail (143), a protrusion (144), a hollow block (145), and a sliding block (146). The L-shaped frame (141) is fixedly installed at the bottom of the sieve plate (11), the round rod (142) is fixedly installed on the surface of the L-shaped frame (141), the arc-shaped slide rail (143) is fixedly installed on the inner wall of the base (1), the protrusion (144) is fixedly installed on the top of the arc-shaped slide rail (143), the hollow block (145) is fixedly installed on the surface of the L-shaped frame (141), and the sliding block (146) is installed inside the hollow block (145). The round rod (142) slides on the inner wall of the arc-shaped slide rail (143), and a first spring is provided between the sliding block (146) and the hollow block (145).

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