Long distance earth and rock conveying system

Abstract

The application relates to the field of conveying equipment, in particular to a long-distance soil and stone conveying system which comprises a discharge bin, a first vibrating screen, a crusher and multiple belt conveyors, the crusher is located above the first vibrating screen, a first lifting conveyor is installed between the first vibrating screen and the discharge bin, the first vibrating screen is gradually lifted and arranged in an inclined manner from one side close to the discharge bin to the other side, a recovery mechanism is installed between the first vibrating screen and the crusher, the multiple belt conveyors are sequentially arranged, a second vibrating screen is arranged at the feeding end of each belt conveyor, the second vibrating screen located at the first belt conveyor is located below the discharge bin, the discharge end of each belt conveyor is gradually lifted and located above the second vibrating screen, and each second vibrating screen is gradually lowered and arranged in an inclined manner along the conveying direction of the belt conveyor. The application has the effect of reducing the damage of the belt surface of the belt conveyor under the impact of the stone.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of conveying equipment, in particular to a long-distance soil and stone conveying system. BACKGROUND

[0002] In large projects and mining, the amount of soil and stone to be transported is large, and the transportation distance is long. Generally, a belt conveyor is used for transportation.

[0003] At present, the related technology discloses a long-distance soil and stone conveying system, which comprises a crusher, a vibrating screen, a discharge bin and a plurality of belt conveyors arranged in sequence. A lifting conveyor is installed between the vibrating screen and the discharge bin. The soil and stone is put into the crusher by a forklift, and the soil and stone is discharged into the vibrating screen after being crushed by the crusher. The vibrating screen divides the crushed soil and stone into fine material and coarse material. The fine material is discharged into the discharge bin through the lifting conveyor, and the coarse material is recycled and then fed into the crusher for crushing. The discharge bin puts the fine material into the belt conveyor, and the fine material is sent to the destination through the plurality of belt conveyors connected in sequence.

[0004] According to the related technology in the above, the inventors believe that the fine material is a mixture of stone and sand, and the stone will hit the belt surface of the belt conveyor when the fine material is discharged into the belt conveyor from the discharge bin. The belt surface of the belt conveyor may be cracked and damaged under the continuous impact of the stone. SUMMARY

[0005] In order to reduce the damage of the belt conveyor under the impact of the stone, the present application provides a long-distance soil and stone conveying system.

[0006] The long-distance soil and stone conveying system provided by the present application adopts the following technical scheme:

[0007] A long-distance soil and stone conveying system, comprising a discharge bin, a first vibrating screen, a crusher and a plurality of belt conveyors, the crusher is located above the first vibrating screen, the crusher is used to discharge the crushed soil and stone into the first vibrating screen, the first vibrating screen is used to screen the crushed soil and stone into fine material and coarse material, a first lifting conveyor is installed between the first vibrating screen and the discharge bin, the first vibrating screen is gradually raised from one side to the other side of the discharge bin and is arranged in an inclined manner, the first lifting conveyor is used to feed the fine material into the discharge bin, a recycling mechanism is installed between the first vibrating screen and the crusher, the recycling mechanism is used to recycle the coarse material, the plurality of belt conveyors are arranged in sequence, each belt conveyor is provided with a second vibrating screen at the feeding end, the second vibrating screen of the first belt conveyor is located below the discharge bin, the discharge end of each belt conveyor is gradually raised above the second vibrating screen, and each second vibrating screen is gradually lowered and arranged in an inclined manner along the conveying direction of the belt conveyor.

[0008] By adopting the technical scheme, the crusher sends the crushed earth and stone into the first vibrating screen, the first vibrating screen divides the crushed earth and stone into fine materials and coarse materials. The first vibrating screen sends the fine materials to the first lifting conveyor, and the first lifting conveyor sends the fine materials into the discharge bin for storage. The first vibrating screen sends the coarse materials to the recycling mechanism, and the recycling mechanism recycles the coarse materials and then crushes them again. The discharge bin sends the fine materials to the second vibrating screen, and the second vibrating screen divides the fine materials into sandy soil and stone blocks. The second vibrating screen sends the sandy soil to the belt conveyor, so that the sandy soil is spread on the top side of the belt conveyor. Then, when the second vibrating screen sends the stone blocks to the belt conveyor, the stone blocks hit the sandy soil on the belt conveyor. Through the buffering of the sandy soil on the stone blocks, the damage of the belt conveyor under the impact of the stone blocks is reduced.

[0009] Optionally, the bottom side of the first vibrating screen is fixedly installed with a first shielding cover, the bottom side of the first shielding cover is gradually raised from one side close to the discharge bin to the other side to be inclined, and the bottom side of the first shielding cover is fixedly installed with a first material guide pipe in communication with the inside of the first shielding cover.

[0010] By adopting the technical scheme, after the first vibrating screen divides the crushed earth and stone into fine materials and coarse materials, the fine materials fall into the inside of the first shielding cover, and then the fine materials are sent from the first material guide pipe to the first lifting conveyor. Through the first shielding cover and the first material guide pipe, the fine materials are guided to the first lifting conveyor, so that the fine materials are less likely to be scattered outside the first lifting conveyor. Meanwhile, the first shielding cover and the first material guide pipe shield the fine materials, so that the fine materials are less likely to be scattered when falling into the first lifting conveyor.

[0011] Optionally, the bottom side of the second vibrating screen is fixedly installed with a second shielding cover, the bottom side of the second shielding cover is gradually lowered along the conveying direction of the belt conveyor to be inclined, and the bottom side of the second shielding cover is fixedly installed with a second material guide pipe in communication with the inside of the second shielding cover.

[0012] By adopting the technical scheme, after the second vibrating screen divides the fine materials into sandy soil and stone blocks, the sandy soil falls into the inside of the second shielding cover, and then the sandy soil is sent from the second material guide pipe to the belt conveyor. Through the second shielding cover and the second material guide pipe, the sandy soil is guided to the belt conveyor, so that the sandy soil is less likely to be scattered outside the belt conveyor. Meanwhile, the second shielding cover and the second material guide pipe shield the sandy soil, so that the sandy soil is less likely to be scattered when falling into the belt conveyor.

[0013] Optionally, the top side of the belt conveyor is fixedly installed with a first smoothing plate, the first smoothing plate is located below the second shielding cover, the first smoothing plate is located downstream of the conveying sequence of the second discharge port, and the first smoothing plate is used for smoothing the fine materials conveyed on the belt conveyor.

[0014] By adopting the above technical scheme, the sand soil is discharged from the second vibrating screen to the belt conveyor, and the first leveling plate is used for scraping the sand soil, so that the sand soil on the belt conveyor is evenly distributed, and the damage of the belt conveyor caused by the impact of the stone is reduced.

[0015] Optionally, a second leveling plate is installed on the top side of the belt conveyor, and the second leveling plate is located downstream of the conveying sequence of the second shielding cover. The second leveling plate is used for leveling the coarse material conveyed on the belt conveyor.

[0016] By adopting the above technical scheme, after the second vibrating screen discharges the stone to the belt conveyor, the second leveling plate is used for scraping the stone stacked on each other, so that the height of the stone stacked on the belt conveyor is reduced. By reducing the height of the stone stacked on the belt conveyor, the situation that the stone rolls off the belt conveyor when the belt conveyor transports the fine material is reduced.

[0017] Optionally, a buffer plate is arranged on one side of the second leveling plate close to the second shielding cover. A sliding rod is fixedly installed on the buffer plate, the sliding rod slides through the second leveling plate, a limiting plate is fixedly installed on one end of the sliding rod away from the buffer plate, a spring is sleeved on the sliding rod, the limiting plate and the spring are located on one side of the second leveling plate away from the second shielding cover, and the spring is fixedly installed between the limiting plate and the second leveling plate.

[0018] By adopting the above technical scheme, when the second vibrating screen discharges the stone to the belt conveyor, the stone first impacts the buffer plate, and the buffer plate moves towards the second leveling plate, so that the buffer plate has a buffering effect. By buffering the stone through the buffer plate, the impact force of the stone falling on the belt conveyor is reduced, and the damage of the belt conveyor caused by the impact of the stone is reduced.

[0019] Optionally, a scraper is fixedly installed on the bottom side of the belt conveyor, the scraper is located between the discharging end of the belt conveyor and the second vibrating screen, a scraping strip is fixedly installed on one side of the scraper close to the belt conveyor, the scraping strip has elasticity, and the scraping strip abuts against the belt surface on the bottom side of the belt conveyor.

[0020] By adopting the above technical scheme, the scraper is used for scraping the sand soil adhered to the bottom side of the belt conveyor, and then the sand soil is discharged into the second vibrating screen, so that the situation that the sand soil is scattered outside the second vibrating screen after the sand soil automatically falls from the bottom side of the belt conveyor is reduced.

[0021] Optionally, one side of the belt conveyor is provided with a water storage tank, both sides of the belt conveyor are fixedly installed with a spray head, the water storage tank is installed with a water pump, the liquid inlet end of the water pump is in communication with the inside of the water storage tank, the liquid outlet end of the water pump is connected with a first water outlet pipe, the second end of the first water outlet pipe away from the water pump is connected with a second water outlet pipe, and the spray head sprays between the bottom side of the second vibrating screen and the top side of the belt conveyor.

[0022] By adopting the above technical scheme, the water pump extracts water in the water storage tank, the water flows into the spray head from the first water outlet pipe and the second water outlet pipe, and then the spray head sprays water between the second vibrating screen and the belt conveyor to reduce dust. The water sprayed by the spray head can wet the sand on the belt conveyor, and then when the stone falls into the belt conveyor, the wet sand can fix the stone, thereby reducing the situation that the stone rolls back to hit the belt conveyor again when the belt conveyor drives the fine material to climb.

[0023] Optionally, the recycling mechanism comprises a material guide groove and a material collecting box, the top side of the material collecting box is open, the material collecting box is located on one side of the first vibrating screen, the material guide groove is installed between the material collecting box and the first vibrating screen, the first vibrating screen is used to discharge the coarse material into the material guide groove, and the material guide groove is gradually raised from one end close to the material collecting box to the other end to be inclined.

[0024] By adopting the above technical scheme, the first vibrating screen discharges the coarse material to the material guide groove, and then the coarse material is discharged from the material guide groove to the material collecting box, so that the coarse material is conveniently recycled.

[0025] Optionally, a second lifting conveyor is installed between the material collecting box and the crusher, the feeding end of the second lifting conveyor is located in the inside of the material collecting box, the discharging end of the second lifting conveyor is located above the crusher, and the inner bottom wall of the material collecting box is inclined to be lower than the position where the feeding end of the second lifting conveyor is located.

[0026] By adopting the above technical scheme, the second lifting conveyor sends the coarse material in the material collecting box into the crusher, so that the recycled coarse material is conveniently broken again.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] After the fine material is discharged to the second vibrating screen in the discharge bin, the second vibrating screen divides the fine material into sand and stone, the second vibrating screen discharges the sand into the belt conveyor first, and then when the second vibrating screen discharges the stone into the belt conveyor, the stone hits the sand, and the sand plays a buffering role, thereby reducing the damage of the belt conveyor under the impact of the stone.

[0029] When the water pump pumps the water in the water storage tank to the first water outlet pipe, the water in the first water outlet pipe flows to the second water outlet pipe and is sprayed from the spray head, the water sprayed from the spray head performs dust reduction, so that the dust floating and polluting the air is prevented.

[0030] When the spray head sprays water to reduce dust, the water will wet the sand on the belt conveyor, so that the sand is condensed to fix the stone, and then the situation that the stone rolls backward when the belt conveyor climbs is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0032] Figure 2 is a schematic diagram of the structure of the crusher and the first vibrating screen of the embodiment of the present application;

[0033] Figure 3 is a schematic diagram of the structure of the first vibrating screen of the embodiment of the present application;

[0034] Figure 4 is a schematic diagram of the structure of the belt conveyor of the embodiment of the present application;

[0035] Figure 5 is a schematic diagram of the structure of the second vibrating screen of the embodiment of the present application;

[0036] Figure 6 is a schematic diagram of the structure between the water storage tank and the spray head of the embodiment of the present application;

[0037] Figure 7 is a schematic diagram of the structure of the first trowel plate of the embodiment of the present application;

[0038] Figure 8 is a schematic diagram of the structure of the second trowel plate of the embodiment of the present application;

[0039] Figure 9 is a schematic diagram of the structure of the scraper of the embodiment of the present application.

[0040] BRIEF DESCRIPTION OF DRAWINGS: 1, discharge bin; 2, first vibrating screen; 3, second vibrating screen; 4, crusher; 5, first lifting conveyor; 6, second lifting conveyor; 7, first shielding cover; 8, second shielding cover; 9, first material guide pipe; 10, second material guide pipe; 11, recovery mechanism; 111, material guide groove body; 112, material collecting box; 12, belt conveyor; 13, water storage tank; 14, spray head; 15, water pump; 16, first water outlet pipe; 17, second water outlet pipe; 18, first trowel plate; 19, second trowel plate; 20, buffer plate; 21, slide rod; 22, limiting plate; 23, spring; 24, scraper; 25, scraper strip. DETAILED DESCRIPTION

[0041] The following will be described in conjunction with the drawingsFigures 1-9 The application is further described in detail.

[0042] The application discloses a long-distance soil and stone conveying system.

[0043] Referring to Figure 1 A long-distance soil and stone conveying system comprises a discharge bin 1, a first vibrating screen 2 and a crusher 4. The crusher 4 is fed from the top side, and the crusher 4 is discharged from the bottom side. The soil and stone is put into the crusher 4 by a shovel, and the soil and stone is crushed by the crusher 4, and then discharged from the bottom side of the crusher 4.

[0044] Referring to Figure 2 The first vibrating screen 2 is located below the crusher 4, and the first vibrating screen 2 is gradually raised from one side to the other side of the discharge bin 1 to form an inclination. The crushed soil and stone is discharged into the first vibrating screen 2 by the crusher 4, and the first vibrating screen 2 divides the crushed soil and stone into coarse material and fine material. The first vibrating screen 2 is fed from the top side, the bottom side of the first vibrating screen 2 is used to discharge the fine material, and the side wall of the low side of the first vibrating screen 2 is used to discharge the coarse material.

[0045] Referring to Figure 1 、 Figure 2 A first lifting conveyor 5 is installed between the first vibrating screen 2 and the discharge bin 1, the feeding end of the first lifting conveyor 5 is located below the first vibrating screen 2, and the discharging end of the first lifting conveyor 5 is located above the discharge bin 1. The first vibrating screen 2 discharges the fine material into the first lifting conveyor 5, and the first lifting conveyor 5 sends the fine material into the discharge bin 1 for storage.

[0046] Referring to Figure 2 、 Figure 3 The bottom side of the first vibrating screen 2 is fixedly installed with a first shielding cover 7, and the bottom side of the first shielding cover 7 is gradually raised from one side to the other side of the discharge bin 1 to form an inclination. The bottom side of the first shielding cover 7 is fixedly installed with a first material guide pipe 9, and the first material guide pipe 9 is in communication with the inside of the first shielding cover 7.

[0047] After the first vibrating screen 2 screens the crushed soil and stone, the fine material first falls into the inside of the first shielding cover 7, and then the fine material is discharged from the first material guide pipe 9 into the first lifting conveyor 5. The first shielding cover 7 and the first material guide pipe 9 guide the fine material to be discharged into the first lifting conveyor 5, so as to reduce the situation that the fine material is scattered outside the first lifting conveyor 5. At the same time, the first shielding cover 7 and the first material guide pipe 9 play a shielding role, so as to reduce the situation that the fine material is scattered to pollute the air.

[0048] Referring to Figure 2, a recycling mechanism 11 is arranged between the first vibrating screen 2 and the crusher 4, and the recycling mechanism 11 comprises a material guiding groove body 111 and a material collecting box 112. The material collecting box 112 is open at the top side. The material collecting box 112 is located at one side of the first vibrating screen 2. One end of the material guiding groove body 111 is located at the side of the first vibrating screen 2 close to the discharge bin 1, and the other end of the material guiding groove body 111 is fixedly connected to the top side of the material collecting box 112. The material guiding groove body 111 is gradually raised from one end close to the material collecting box 112 to the other end, and is arranged in an inclined manner.

[0049] The first vibrating screen 2 discharges the coarse material into the material guiding groove body 111, and the material guiding groove body 111 discharges the coarse material into the interior of the material collecting box 112, thereby facilitating the recycling of the coarse material.

[0050] Referring to Figure 2 , a second lifting conveyor 6 is arranged between the material collecting box 112 and the crusher 4, the feeding end of the second lifting conveyor 6 is located in the interior of the material collecting box 112, and the discharging end of the second lifting conveyor 6 is located above the crusher 4. The inner bottom wall of the material collecting box 112 is arranged in an inclined manner with the position where the feeding end of the second lifting conveyor 6 is located as the low point.

[0051] After the material guiding groove body 111 sends the coarse material into the interior of the material collecting box 112, the coarse material is guided by the inclined direction of the inner bottom wall of the material collecting box 112, and the coarse material is gathered towards the feeding end of the second lifting conveyor 6. Then, the second lifting conveyor 6 transports the coarse material from the material collecting box 112 to the crusher 4. The crusher 4 re-crushes the coarse material.

[0052] Referring to Figure 1 , Figure 4 , the belt conveyors 12 are arranged in a concave groove manner, and a plurality of belt conveyors 12 are arranged in sequence. The feeding end of each belt conveyor 12 is provided with a second vibrating screen 3. The second vibrating screen 3 located on the first belt conveyor 12 is located below the discharge bin 1. The discharging end of each belt conveyor 12 is gradually raised, and the discharging end of the upstream belt conveyor 12 is located above the downstream second vibrating screen 3 between adjacent two belt conveyors 12. Each second vibrating screen 3 is arranged in an inclined manner gradually lowered along the conveying direction of the belt conveyor 12.

[0053] The discharge bin 1 discharges the fine material to the second vibrating screen 3, and the second vibrating screen 3 screens the fine material into sand and stones. The sand is discharged from the bottom side of the second vibrating screen 3 to the top side of the belt conveyor 12, and then the second vibrating screen 3 discharges the stones into the belt conveyor 12. When the stones are discharged into the belt conveyor 12, the stones impact the sand, and the sand plays a buffering role, thereby reducing the damage of the belt conveyor 12 under the impact of the stones.

[0054] Referring to Figure 4 , Figure 5The bottom side of the second vibrating screen 3 is fixedly installed with a second shielding cover 8, and the bottom side of the second shielding cover 8 is gradually lowered and arranged in an inclined manner along the conveying direction of the belt conveyor 12. The bottom side of the second shielding cover 8 is fixedly installed with a second material guide pipe 10, and the second material guide pipe 10 is in communication with the inside of the second shielding cover 8.

[0055] The second vibrating screen 3 first discharges the sand and soil into the inside of the second shielding cover 8, and then the sand and soil in the inside of the second shielding cover 8 is discharged from the second material guide pipe 10 to the belt conveyor 12, so as to reduce the situation that the sand and soil is splashed to the outside of the belt conveyor 12. At the same time, the second shielding cover 8 and the second material guide pipe 10 shield the sand and soil, so as to reduce the situation that the sand and soil is flying.

[0056] Referring to Figure 4 , Figure 6 One side of the belt conveyor 12 is provided with a water storage tank 13, and both sides of the belt conveyor 12 are fixedly installed with a spray head 14. The water storage tank 13 is installed with a water pump 15, the inlet end of the water pump 15 is in communication with the inside of the water storage tank 13, and the outlet end of the water pump 15 is connected with a first water outlet pipe 16. The second water outlet pipe 17 is connected between the end of the first water outlet pipe 16 away from the water pump 15 and the spray head 14, and the spray head 14 sprays towards the space between the bottom side of the second vibrating screen 3 and the top side of the belt conveyor 12.

[0057] The water pump 15 is started, and the water in the inside of the water storage tank 13 flows to the spray head 14 through the first water outlet pipe 16 and the second water outlet pipe 17. Then the spray head 14 sprays water to the space between the bottom side of the second vibrating screen 3 and the top side of the belt conveyor 12, so as to play a dust-settling role. At the same time, the water sprayed by the spray head 14 can wet the sand and soil on the top side of the belt conveyor 12, and the sand and soil is solidified, so as to facilitate the fixing effect of the sand and soil on the stone, and further reduce the situation that the stone rolls back when the belt conveyor 12 climbs.

[0058] Referring to Figure 4 , Figure 7 , Figure 8 The top side of the belt conveyor 12 is fixedly installed with a first leveling plate 18 and a second leveling plate 19. The first leveling plate 18 is located below the second shielding cover 8, and the first leveling plate 18 is located downstream of the conveying sequence of the second discharge port. The space between the bottom side of the first leveling plate 18 and the top side of the belt conveyor 12 is left for the sand and soil to pass through. When the belt conveyor 12 transports the sand and soil through the first leveling plate 18, the first leveling plate 18 scrapes the sand and soil, so as to reduce the situation that the stone directly impacts the belt conveyor 12.

[0059] The second leveling plate 19 is located downstream of the conveying sequence of the second shielding cover 8, and a space for the stones to pass through is left between the bottom side of the second leveling plate 19 and the top side of the belt conveyor 12. The stones pass through the space between the bottom side of the second leveling plate 19 and the top side of the belt conveyor 12, thereby limiting the stacking height of the stones on the belt conveyor 12, and reducing the situation that the stones roll backward when the belt conveyor 12 climbs.

[0060] With reference to Figure 8 , the second leveling plate 19 is provided with a buffer plate 20 on the side close to the second shielding cover 8, the buffer plate 20 is fixedly installed with a sliding rod 21, and the sliding rod 21 slides through the second leveling plate 19. The end of the sliding rod 21 away from the buffer plate 20 is fixedly installed with a limiting plate 22, and the sliding rod 21 is sleeved with a spring 23. The limiting plate 22 and the spring 23 are both located on the side of the second leveling plate 19 away from the second shielding cover 8, and the spring 23 is fixedly installed between the limiting plate 22 and the second leveling plate 19.

[0061] When the second vibrating screen 3 discharges the stones, the stones first impact the buffer plate 20, and the buffer plate 20 moves towards the second leveling plate 19, thereby playing a buffering role. After the stones impact the buffer plate 20, the stones fall into the belt conveyor 12, and the impact force of the stones on the belt conveyor 12 is small, thereby reducing the situation that the belt conveyor 12 is damaged under the impact of the stones.

[0062] With reference to Figure 4 , Figure 9 , the bottom side of the belt conveyor 12 is fixedly installed with a scraper 24, the scraper 24 is located between the discharge end of the belt conveyor 12 and the second vibrating screen 3, the scraper 24 is fixedly installed with a scraping strip 25 on the side close to the belt conveyor 12, the scraping strip 25 has elasticity, and the scraping strip 25 is in close contact with the belt surface on the bottom side of the belt conveyor 12.

[0063] When the belt conveyor 12 delivers the fine materials to the destination or into the next belt conveyor 12, the scraper 24 scrapes the sand and soil on the bottom side of the belt conveyor 12 through the scraping strip 25.

[0064] The implementation principle of the long-distance soil and stone conveying system in the embodiment is as follows: the forklift delivers the soil and stones into the crusher 4 for crushing, and then the crusher 4 delivers the crushed soil and stones into the first vibrating screen 2. The first vibrating screen 2 divides the crushed soil and stones into fine materials and coarse materials. The first vibrating screen 2 delivers the coarse materials into the guide chute body 111, and the coarse materials enter the inside of the material collecting box 112 from the guide chute body 111. Then the first lifting conveyor 5 delivers the coarse materials into the crusher 4 for re-crushing. The first vibrating screen 2 delivers the fine materials into the discharge bin 1 for storage.

[0065] Afterwards, the fine material is discharged from the discharge bin 1 to the second vibrating screen 3, and the second vibrating screen 3 divides the fine material into sand and stones. The second vibrating screen 3 discharges the sand to the belt conveyor 12, and the water spray head 14 sprays water to reduce dust, so that the sand is condensed on the top side of the belt conveyor 12. Then, the second vibrating screen 3 discharges the stones to the belt conveyor 12, and the sand plays a buffering role on the stones, so as to reduce the damage of the belt conveyor 12 under the impact of the stones. Afterwards, the fine material is conveyed to the destination on the belt conveyor 12.

[0066] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A long-distance earth and rock transport system, characterized in that: The system includes a discharge bin (1), a first vibrating screen (2), a crusher (4), and multiple belt conveyors (12). The crusher (4) is located above the first vibrating screen (2) and is used to crush soil and stone and discharge it into the first vibrating screen (2). The first vibrating screen (2) is used to screen the crushed soil and stone into fine and coarse materials. A first lifting conveyor (5) is installed between the first vibrating screen (2) and the discharge bin (1). The first vibrating screen (2) is gradually raised from the side closest to the discharge bin (1) to the other side and is inclined. The first lifting conveyor (5) is used to send fine materials into the discharge bin (1). A recycling mechanism (11) is installed between the first vibrating screen (2) and the crusher (4). The recycling mechanism (11) is used to recycle coarse materials. Multiple belt conveyors (12) are arranged in sequence. A second vibrating screen (3) is provided at the feed end of each belt conveyor (12). The second vibrating screen (3) located on the first belt conveyor (12) is located below the discharge bin (1). The discharge end of each belt conveyor (12) is gradually raised and located above the second vibrating screen (3). Each second vibrating screen (3) is gradually lowered and inclined along the conveying direction of the belt conveyor (12). The bottom side of the second vibrating screen (3) is fixedly installed with a second shield (8). The bottom side of the second shield (8) is gradually lowered and inclined along the conveying direction of the belt conveyor (12). The bottom side of the second shield (8) is fixedly installed with a second guide pipe (10). The second guide pipe (10) is connected to the inside of the second shield (8). The belt conveyor (12) is fixedly installed with a first smearing plate (18). The first smearing plate (18) is located below the second shield (8). The first smearing plate (18) is located downstream of the second vibrating screen (3) in the conveying sequence. The first smearing plate (18) is used to smooth the fine material conveyed on the belt conveyor (12). A second smearing plate (19) is installed on the top side of the belt conveyor (12). The second smearing plate (19) is located downstream of the second shield (8) in the conveying sequence. The second smearing plate (19) is used to smooth the coarse material conveyed on the belt conveyor (12). A buffer plate (20) is provided on the side of the second smearing plate (19) near the second shield (8). A slide rod (21) is fixedly installed on the buffer plate (20). The slide rod (21) slides through the second smearing plate (19). A limit plate (22) is fixedly installed on the end of the slide rod (21) away from the buffer plate (20). A spring (23) is sleeved on the slide rod (21). The limit plate (22) and the spring (23) are both located on the side of the second smearing plate (19) away from the second shield (8). The spring (23) is fixedly installed between the limit plate (22) and the second smearing plate (19). Water storage tanks (13) are provided on both sides of the belt conveyor (12). Spray nozzles (14) are fixedly installed on both sides of the belt conveyor (12). A water pump (15) is installed in the water storage tank (13). The inlet end of the water pump (15) is connected to the inside of the water storage tank (13). The outlet end of the water pump (15) is connected to a first outlet pipe (16). The end of the first outlet pipe (16) away from the water pump (15) is connected to a second outlet pipe (17) between the nozzle (14). The nozzle (14) sprays between the bottom side of the second vibrating screen (3) and the top side of the belt conveyor (12).

2. The long-distance earth and rock transportation system according to claim 1, characterized in that: The bottom side of the first vibrating screen (2) is fixedly installed with a first shield (7). The bottom side of the first shield (7) is gradually raised from the side near the discharge hopper (1) to the other side and is inclined. The bottom side of the first shield (7) is fixedly installed with a first guide pipe (9). The first guide pipe (9) is connected to the inside of the first shield (7).

3. The long-distance earth and rock transportation system according to claim 1, characterized in that: A scraper (24) is fixedly installed on the bottom side of the belt conveyor (12). The scraper (24) is located between the discharge end of the belt conveyor (12) and the second vibrating screen (3). A scraper strip (25) is fixedly installed on the side of the scraper (24) close to the belt conveyor (12). The scraper strip (25) is elastic and abuts against the belt surface on the bottom side of the belt conveyor (12).

4. A long-distance earth and rock transport system according to claim 1, characterized in that: The recycling mechanism (11) includes a material guide trough (111) and a collection box (112). The collection box (112) has an opening on the top side and is located on one side of the first vibrating screen (2). The material guide trough (111) is installed between the collection box (112) and the first vibrating screen (2). The first vibrating screen (2) is used to discharge coarse material into the material guide trough (111). The material guide trough (111) is gradually raised from one end near the collection box (112) to the other end and is inclined.

5. A long-distance earth and rock transport system according to claim 4, characterized in that: A second lifting conveyor (6) is installed between the collection box (112) and the crusher (4). The feed end of the second lifting conveyor (6) is located inside the collection box (112), and the discharge end of the second lifting conveyor (6) is located above the crusher (4). The inner bottom wall of the collection box (112) is inclined with the feed end of the second lifting conveyor (6) as the lowest point.

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