An ore screening device and a deep sea mining vehicle

Abstract

The present application provides a kind of ore screening device and deep sea mining car, ore screening device includes the ore collection box of one side open setting, the ore washing assembly of being arranged in the ore collection box, and first ore screening component and second ore screening component are oppositely arranged in the ore collection box, the first collection cavity and the second collection cavity are further provided in the ore collection box;The ore collected falls into the end of the first ore screening component, the ore screening component is washed clean by the ore washing assembly and is collected in the first collection cavity after the ore with size greater than or equal to preset specification is screened out;The ore with size less than preset specification falls on the second ore screening component from the first ore screening component, is collected in the second collection cavity after being washed clean by the ore washing assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea mining equipment, and in particular to an ore screening device and a deep-sea mining vehicle. Background Art

[0002] With the development of science and technology, both traditional and high-tech industries have a huge demand for metal mineral resources. In the half century since World War II, global mineral resource consumption has increased dozens of times. Limited resources on land are unable to sustain sustainable human development. However, the ocean, which covers approximately 71% of the Earth's surface area, is rich in mineral resources such as polymetallic nodules, cobalt-rich crusts, and polymetallic sulfides. Its reserves are far greater than those on land. Therefore, the development and utilization of deep-sea mineral resources is an inevitable trend in future economic development.

[0003] The robotics industry is booming, and deep-sea crawler vehicles have become the mainstream method for mining marine mineral resources. Currently, mining facilities both domestically and internationally often use a method that simultaneously excavates ore and soil. Ore with sediment and sand undoubtedly creates inconvenience in subsequent processing, significantly reducing efficiency. Furthermore, the collected ore has varying profiles, and if mixed together, the quality of the ore will vary. Therefore, it is crucial to design a device that can collect seabed ore, clean the surface sediment, and separate ores of varying profiles. This would significantly improve the efficiency and quality of seabed mining equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide an ore screening device and a deep-sea mining vehicle, which can clean the mud and sand on the surface of the ore and screen ores of different specifications and profiles, thereby improving the efficiency of mining and reducing the difficulty of subsequent work.

[0005] To achieve the above-mentioned objectives, in a first aspect, the present invention provides an ore screening device, comprising: an ore collecting box with an open side, an ore cleaning assembly disposed within the ore collecting box, and a first ore screening assembly and a second ore screening assembly disposed opposite each other in the ore collecting box, wherein the ore collecting box is further provided with a first collecting chamber and a second collecting chamber;

[0006] The collected ore falls into one end of the first ore screening component. The first ore screening component screens out ore with a size greater than or equal to a preset specification, and the ore is then rinsed clean by the ore cleaning component and collected in the first collection chamber.

[0007] Ores with a size smaller than the preset specification fall from the first ore screening assembly to the second ore screening assembly, are washed clean by the ore cleaning assembly, and are collected in the second collection chamber.

[0008] Further, the first ore screening assembly includes a first front support shaft, a first rear support shaft and a first screening belt;

[0009] The first front support shaft is arranged close to the open side of the ore collection box, the first rear support shaft is arranged away from the open side of the ore collection box, the first rear support shaft is arranged higher than the first front support shaft, the two ends of the first front support shaft are respectively fixedly mounted on the two side walls of the ore collection box, and the two ends of the first rear support shaft are respectively rotatably mounted on the two side walls of the ore collection box;

[0010] The first front support shaft is rotatably provided with first sprockets at both ends, the first rear support shaft is coaxially fixed with a roller sprocket, the first screening belt is sleeved on the first front support shaft and the first rear support shaft, and the first sprocket and the roller sprocket are engaged with the first screening belt;

[0011] The first rear support shaft is driven by a first motor, and the first motor is fixedly mounted on an outer wall surface of one side of the ore collecting box.

[0012] Furthermore, the first screening belt comprises a chain conveyor belt composed of a plurality of identical adjustable baffle assemblies hinged in series and a specification adjustment mechanism for adjusting the screening specifications of the chain conveyor belt;

[0013] The adjustable baffle assembly includes a support plate, the support plate is provided with four circular holes arranged at equal intervals in the longitudinal direction, an L-shaped screw is rotatably passed through each circular hole, the vertical section of the L-shaped screw is threaded and is threadedly connected to the end face of the adjustable baffle, the adjustable baffle is located on the outer side of the support plate, the horizontal section of the L-shaped screw has an elliptical sliding hole, the sliding hole is axially extended along the horizontal section of the L-shaped screw, and the horizontal section of the L-shaped screw is located on the inner side of the support plate;

[0014] Adjacent support plates are rotatably connected in the form of hinges via connecting rods; cover plates are fixedly mounted on both ends of the inner sides of the support plates, and the cover plates have arc-shaped surfaces. The first sprocket and the roller sprocket cooperate with the arc-shaped surfaces of the cover plates to drive the chain conveyor belt to rotate;

[0015] The specification adjustment mechanism is transmission-connected to the L-shaped screw through the sliding hole, and the specification adjustment mechanism adjusts the rotation angle of the adjustable baffle by adjusting the rotation angle of the L-shaped screw.

[0016] Furthermore, the specification adjustment mechanism includes a transverse plate, an electric push rod, and a plurality of sliding rods arranged in a one-to-one correspondence with the adjustable baffle assembly, four protruding cylinders are arranged on the sliding rod at equal intervals along the axial direction, the sliding rod is arranged parallel to the first front support shaft, the protruding ends of the cylinders are movably inserted into the corresponding sliding holes, and a limit plate is provided at one end of the sliding rod;

[0017] The sliding rod is slidably arranged in the cover plate;

[0018] An elliptical sliding groove is provided on the inner side surface of the transverse moving plate, and the limiting plate is embedded in the sliding groove and slides along the sliding groove;

[0019] The electric push rod is fixedly mounted on the first front support shaft, and the electric push rod is fixedly connected to the inner side surface of the transverse plate to drive the transverse plate to move closer to or away from the chain conveyor belt.

[0020] Furthermore, a sleeve support seat is fixedly sleeved on the first front support shaft, and a support plate extending radially outward along the sleeve support seat is provided on the side wall of the sleeve support seat, and the electric push rod is fixedly mounted on the support plate.

[0021] Further, the second ore screening assembly includes a second front support shaft, a second rear support shaft and a second screening belt;

[0022] The second front support shaft is arranged close to the open side of the ore collection box, the second rear support shaft is arranged away from the open side of the ore collection box, the second rear support shaft is arranged higher than the second front support shaft, the two ends of the second front support shaft are respectively rotatably mounted on the two side walls of the ore collection box, and the two ends of the second rear support shaft are respectively fixedly mounted on the two side walls of the ore collection box;

[0023] The second front support shaft is fixedly mounted with a second sprocket at both ends, the second rear support shaft is rotatably mounted with a third sprocket at both ends, the second screening belt is sleeved on the second front support shaft and the second rear support shaft, and the second sprocket and the third sprocket are engaged with the second screening belt;

[0024] The second front support shaft is driven by a second motor, and the second motor is fixedly mounted on an outer wall surface of one side of the ore collecting box.

[0025] Furthermore, the second screening belt includes two chains arranged opposite to each other and a plurality of baffles connected between the two chains; the two chains are respectively arranged at both ends of the baffles.

[0026] Furthermore, the second rear support shaft is provided with a limiting strip extending in the axial direction and protruding outward.

[0027] Furthermore, the ore cleaning assembly includes a high-pressure water pump and a plurality of cleaning guns, the cleaning guns are connected to the high-pressure water pump via a water pipe, and the plurality of cleaning guns are respectively arranged corresponding to the first ore screening assembly and the second ore screening assembly.

[0028] In a second aspect, the present invention further provides a deep-sea mining vehicle comprising a crawler chassis and an ore collecting device mounted at the front end of the crawler chassis, wherein the crawler chassis is also equipped with the ore screening device as described in the first aspect.

[0029] The beneficial effects of the present invention are embodied in:

[0030] (1) The automatic ore screening device of the present invention can integrate screening, cleaning and storage, which can effectively avoid the time waste of ore in various cross-processing links, greatly improve the mining operation efficiency and reduce mining costs.

[0031] (2) The adjustable baffle assembly of the present invention, the first motor drives the sliding rod to move horizontally left and right, and the adjustable baffle is rotated clockwise or counterclockwise through the principle of the connecting rod mechanism. The adjustable baffle at different rotation angles can block ores of different profile sizes, thereby realizing the screening of ores with multiple specifications and profiles, which greatly improves the practicality and economy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of an ore screening device mounted on the tracked chassis of a deep-sea mining vehicle;

[0033] Figure 2 It is a partial cross-section diagram of the ore screening device;

[0034] Figure 3 Schematic diagram of the assembly of the first ore screening assembly;

[0035] Figure 4 This is a side view of the first ore screening assembly;

[0036] Figure 5 This is a schematic diagram of some parts of the first ore screening assembly;

[0037] Figure 6 This is a schematic diagram of the assembly of the adjustable baffle assembly;

[0038] Figure 7 Schematic diagram of the disassembly of the adjustable baffle and L-shaped screw;

[0039] Figure 8 Schematic diagram of the sleeve support seat;

[0040] Figure 9 Schematic diagram of the sliding rod;

[0041] Figure 10Schematic diagram of the assembly of the second ore screening assembly;

[0042] Figure 11 This is a schematic diagram of the disassembly of the second ore screening component;

[0043] Figure 12 Schematic diagram of the second rear support shaft structure;

[0044] Among them: 1. Ore screening device; 2. Crawler chassis; 3. Ore collection device; 4. Ore collection box; 5. Second ore screening assembly; 6. First ore screening assembly; 7. High-pressure water pump; 8. Water pipe; 9. Small ore cleaning gun; 10. Large ore front cleaning gun; 11. Large ore rear cleaning gun; 12. Front baffle; 13. Middle baffle; 14. Rear baffle; 15. First front support shaft; 16. First sprocket; 17. Sleeve support seat; 18. First rear support shaft; 19. Drum sprocket; 20. Adjustable baffle assembly 1. Parts; 21. Support plate; 22. Cover plate; 23. Adjustable baffle; 24. L-shaped screw; 25. Sliding rod; 26. Connecting rod; 27. Transverse plate; 28. Electric push rod; 29. ​​First motor; 30. Flexible brush; 31. Second motor; 32. Bolt; 33. Second front support shaft; 34. Second sprocket; 35. Second rear support shaft; 36. Bearing; 37. Third sprocket; 38. Chain; 39. Baffle; 40. Slide hole; 41. Cylinder; 42. Limit plate; 43. Slide groove; 44. Limit bar. DETAILED DESCRIPTION

[0045] The following is a more detailed description of the specific embodiments of the present invention with reference to schematic diagrams. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used for the purpose of conveniently and clearly illustrating the embodiments of the present invention.

[0046] like Figure 1 As shown, an embodiment of the present application provides a deep-sea mining vehicle, which includes a crawler chassis 2, an ore collection device 3 installed at the front end of the crawler chassis 2, and an ore screening device 1 mounted on the crawler chassis 2.

[0047] like Figure 2 、 Figure 3 As shown, the ore screening device 1 includes an ore collecting box 4 with an open side, an ore cleaning assembly arranged in the ore collecting box 4, and a first ore screening assembly 6 and a second ore screening assembly 5 arranged opposite to each other in the ore collecting box 4. The ore collecting box 4 is also provided with a first collecting cavity and a second collecting cavity.

[0048] Specifically, the interior of the ore collection box 4 is fixedly mounted with three baffles 12, a middle baffle 13, and a rear baffle 14, arranged in ascending height from front to back. The cavity formed between the front baffle 12 and the middle baffle 13 is the second collection cavity, which is used to store fine ore screened by the second ore screening assembly 5. The cavity formed between the middle baffle 13 and the rear baffle 14 is the first collection cavity, which is used to store coarse ore screened by the first ore screening assembly 6.

[0049] The second ore screening assembly 5 is positioned slightly closer to the ore collecting device 3 than the first ore screening assembly 6, allowing it to collect fine ore that has fallen from the first ore screening assembly 6. Ore collected by the ore collecting device 3 falls into one end of the first ore screening assembly 6. The first ore screening assembly 6 then screens out ore with a size equal to or greater than a preset specification. The ore is then rinsed clean by the ore cleaning assembly and collected in the first collection chamber.

[0050] Specifically, such as Figure 4 As shown, the first ore screening assembly 6 includes a first front support shaft 15, a first rear support shaft 18, and a first screening belt. The first front support shaft 15 is positioned near the open side of the ore collection box 4, while the first rear support shaft 18 is positioned away from the open side of the ore collection box 4. The first rear support shaft 18 is positioned higher than the first front support shaft 15. The first front support shaft 15 is fixedly mounted on both side walls of the ore collection box 4 via bolts at both ends, while the first rear support shaft 18 is rotatably mounted on both side walls of the ore collection box 4 via bearings at both ends.

[0051] First sprockets 16 are rotatably mounted on both ends of the first front support shaft 15 via bearings. A roller sprocket 19 is coaxially fixedly mounted on the first rear support shaft 18. The first screening belt is mounted on both the first front support shaft 15 and the first rear support shaft 18. The first sprocket 16 and the roller sprocket 19 mesh with the first screening belt. The first rear support shaft 18 is driven by a first motor 29, which is fixedly mounted on the outer wall of the ore collection box 4. The first motor 29 drives the first rear support shaft 18 in axial rotation, driving the roller sprocket 19 and, in turn, the first screening belt.

[0052] Specifically, the first screening belt comprises a chain conveyor belt consisting of several identical adjustable baffle assemblies 20 articulated in series, and a size adjustment mechanism for adjusting the screening size of the chain conveyor belt. The adjustable baffle assemblies 20 collect oversized ore that has not fallen through the gaps and transfer it to the first ore screening assembly 6. A first motor 29 drives the roller sprocket 19, driving the first screening belt, causing the ore to move diagonally backward and fall into the first collection chamber.

[0053] like Figure 6 、 Figure 7As shown, the adjustable baffle assembly 20 includes a support plate 21 having four longitudinally equidistantly spaced circular holes. An L-shaped screw 24 is rotatably inserted into each hole. The vertical section of the L-shaped screw 24 is threaded and threadedly connected to the end face of the adjustable baffle 23. The adjustable baffle 23 is located on the outer side of the support plate 21. The horizontal section of the L-shaped screw 24 has an elliptical sliding hole 40 extending axially along the horizontal section of the L-shaped screw 24. The horizontal section of the L-shaped screw 24 is located on the inner side of the support plate 21. Adjacent support plates 21 are rotatably connected by connecting rods 26 in the form of hinges. Cover plates 22 are fixedly mounted on both ends of the inner side of the support plate 21. The cover plates 22 have curved surfaces. The first sprocket 16 and the roller sprocket 19 cooperate with the curved surfaces of the cover plates 22 to drive the chain conveyor belt to rotate.

[0054] The specification adjustment mechanism is connected to the L-shaped screw 24 through the sliding hole 40. The specification adjustment mechanism adjusts the rotation angle of the adjustable baffle 23 by adjusting the rotation angle of the L-shaped screw 24, thereby completing the angle control between adjacent adjustable baffles 23, thereby realizing the screening and sorting of the ore contour size.

[0055] Specifically, such as Figure 5 As shown, the specification adjustment mechanism includes a transverse plate 27, an electric push rod 28 and a plurality of sliding rods 25 corresponding to the adjustable baffle assembly 20. Figure 9 As shown, four raised cylinders 41 are arranged at equal intervals along the axial direction on the sliding rod 25, and the sliding rod 25 is arranged parallel to the first front support shaft 15, as shown in FIG. Figure 6 As shown, the protruding end of the cylinder 41 is movably inserted into the corresponding sliding hole 40, and a limit plate 42 is provided at one end of the sliding rod 25. The cover plate 22 is fixedly installed at both ends of the inner side of the support plate 21, and the sliding rod 25 is slidably inserted into the cover plate 22.

[0056] The inner side of the transverse plate 27 has an elliptical groove 43, and the limit plate 42 is embedded in the groove 43 and slides along the groove 43. The electric push rod 28 is fixedly mounted on the first front support shaft 15 and is fixedly connected to the inner side of the transverse plate 27 to drive the transverse plate 27 to move closer to or away from the chain conveyor belt.

[0057] It is understood that, in actual installation, the transverse plate 27 is located between the first sprocket 16 and the inner wall of the ore collecting box 4, and the transverse plate 27 is slidably mounted on the first front support shaft 15 and the first rear support shaft 18. Figure 8 As shown, a sleeve support seat 17 is fixedly mounted on the first front support shaft 15 , and a support plate extending radially outward along the sleeve support seat 17 is provided on the side wall of the sleeve support seat 17 , and the electric push rod 28 is fixedly mounted on the support plate.

[0058] As the electric push rod 28 moves closer to or away from the transverse plate 27, it drives the sliding rod 25 embedded in the slide groove 43 to slide left and right, and the L-shaped screw 24 that is slidably connected to the protruding cylinder 41 of the sliding rod 25 rotates around the circular hole on the support plate 21, and then the adjustable baffle 23 threadedly connected to the L-shaped screw 24 rotates accordingly, completing the angle control between adjacent adjustable baffles 23.

[0059] Ores smaller than the preset specifications will fall from the first ore screening component 6 to the second ore screening component 5, and will be washed clean by the ore cleaning component and collected in the second collection chamber. Figure 10 、 Figure 11 As shown, the second ore screening assembly 5 includes a second front support shaft 33, a second rear support shaft 35, and a second screening belt. The second front support shaft 33 is positioned near the open side of the ore collection box 4, while the second rear support shaft 35 is positioned away from the open side of the ore collection box 4. The second rear support shaft 35 is positioned higher than the second front support shaft 33. The ends of the second front support shaft 33 are rotatably mounted on the side walls of the ore collection box 4 via bearings 36. The ends of the second rear support shaft 35 are fixedly mounted on the side walls of the ore collection box 4 via bolts 32.

[0060] Second sprockets 34 are fixedly mounted at both ends of the second front support shaft 33. Third sprockets 37 are rotatably mounted at both ends of the second rear support shaft 35. The second screening belt is sleeved over the second front support shaft 33 and the second rear support shaft 35. The second sprockets 34 and the third sprockets 37 engage with the second screening belt. The second front support shaft 33 is driven by a second motor 31, which is fixedly mounted on the outer wall of the ore collection box 4.

[0061] The second motor 31 drives the second front support shaft 33 to rotate, and drives the second screening belt to rotate through the second sprocket 34. Specifically, the second screening belt includes two chains 38 arranged opposite to each other and a plurality of baffles 39 connected between the two chains 38. The two chains 38 are respectively arranged at both ends of the baffles 39. The chains 38 are engaged with the second sprocket 34 and the third sprocket 37. Figure 12 As shown, the second rear support shaft 35 is provided with a limit bar 44 extending axially and protruding outward, which can effectively prevent the fine ore falling from the first ore screening assembly 6 from falling through the gap between adjacent baffles 39 and getting stuck between the second rear support shaft 35 and the baffle 39, affecting the operation of the device.

[0062] Specifically, such as Figure 2 、 Figure 3 As shown, the ore cleaning assembly includes a high-pressure water pump 7 and multiple cleaning guns. The cleaning guns are connected to the high-pressure water pump 7 through water pipes, and the multiple cleaning guns are respectively arranged corresponding to the first ore screening assembly 6 and the second ore screening assembly 5.

[0063] In this embodiment, the rear baffle 14 and the wall of the ore collection box 4 form a sealed cavity, which contains water to be used. A high-pressure water pump 7 is fixedly installed in the sealed cavity. The clean water in the sealed cavity is sprayed from the cleaning gun to rinse the surface of the ore, removing sediment from the ore. Both ends of the cleaning gun are fixedly mounted on the inner wall of the ore collection box 4.

[0064] In this embodiment, the cleaning guns are divided into two groups, and the two groups of cleaning guns are used to wash coarse ores and small ores respectively. Figure 2 、 Figure 3 As shown, for the convenience of description, these cleaning guns are respectively recorded as small ore cleaning gun 9, large ore pre-cleaning gun 10 and large ore post-cleaning gun 11.

[0065] A large ore pre-cleaning gun 10 and a large ore post-cleaning gun 11 are mounted on top of the ore collection box 4. A flexible brush 30 is installed above the first ore screening assembly 6 and between the large ore pre-cleaning gun 10 and the large ore post-cleaning gun 11. The ends of the flexible brush 30 are mounted on the left and right walls of the ore collection box 4. As the ore moves diagonally backward along the first ore screening assembly 6 past the flexible brush 30, the flexible brush 30 cooperates with the large ore pre-cleaning gun 10 and the large ore post-cleaning gun 11 on either side of the brush to achieve tumbling cleaning of the ore.

[0066] The flexible brush 30 can achieve shallow cleaning of the surface of large ores. The cleaning guns located on both sides of the flexible brush 30 spray high-pressure water columns to generate vortex-shaped water flow, which can achieve unpowered turning of large ores and thus complete deep cleaning. While protecting the ore from damage, it can effectively improve the cleaning effect of mud and sand on the surface of the ore.

[0067] The small ore cleaning gun 9 is located in the middle of the second screening belt. The high-pressure water jet generated by the high-pressure water pump 7 at the small ore cleaning gun 9 cleans the sediment on the surface of the small ore. While cleaning the sediment on the surface of the small ore, the high-pressure water jet from the small ore cleaning gun 9 can automatically remove the small ores trapped in the gaps between adjacent bars 39, effectively avoiding the problem of poor surface sediment cleaning and separation caused by the accumulation of small ores, and preventing poor separation of small ores from sediment, thereby improving the effectiveness and reliability of the device. At the same time, the limit bar 44 can effectively prevent fine ore falling from the first ore screening assembly 6 from falling through the gaps between adjacent bars 39 and getting stuck between the second rear support shaft 35 and the bar 39, affecting the operation of the device.

[0068] Working principle:

[0069] When the ore is collected by the ore collection device 3 and then transferred to the first ore screening assembly 6, the adjustable baffle assembly 20 will block the ore with a larger profile on the first ore screening assembly 6, while the ore with a smaller profile will fall from the gap between the adjustable baffles 23 on the adjustable baffle assembly 20 and be received and collected by the baffle bar 39 on the second ore screening assembly 5 located obliquely in front of and below the first ore screening assembly 6.

[0070] The large ores on the first ore screening assembly 6 will move obliquely rearward along with the first screening belt. When the large ores move to the flexible brush 30, the high-pressure water columns generated by the high-pressure water pump 7 in the large ore front cleaning gun 10 and the large ore rear cleaning gun 11 will clean the mud and sand on the surface of the large ore, and the thrust generated by the high-pressure water columns in the left and right directions will cause the large ore to roll, thereby achieving deep cleaning of the entire contour surface of the large ore.

[0071] As the first motor 29 continues to rotate, when the adjustable baffle assembly 20 rotates to the obliquely upper circumference of the drum sprocket 19, the large ore will fall into the first collecting chamber due to the lack of support at the bottom and gravity.

[0072] The small ores on the second ore screening assembly 5 will move obliquely rearward along with the second screening belt. When the small ores move above the small ore cleaning gun 9, the high-pressure water column generated by the high-pressure water pump 7 of the small ore cleaning gun 9 will clean the mud and sand on the surface of the small ores. As the second motor 31 continues to rotate, the small ores are transported to the oblique upper circumference of the second rear support shaft 35 along with the baffle 39. The small ores will fall into the second collection chamber due to the lack of support at the bottom and gravity.

[0073] When it is necessary to collect large ores of different specifications and profiles, the adjustable baffle assembly 20 can be adjusted to block the larger ores so that they are retained on the first ore screening assembly 6. By driving the electric push rod 28 to move the transverse plate 27 closer or further away, the sliding rod 25 is driven to move left and right, and the L-shaped screw 24 slidably connected to the raised cylinder 41 on the sliding rod 25 rotates around the circular hole on the support plate 21, causing the adjustable baffle 23 threadedly connected to the L-shaped screw 24 to rotate accordingly, thereby completing the angle control between adjacent adjustable baffles 23 in the adjustable baffle assembly 20, thereby achieving screening and sorting of the collected ore profile size.

[0074] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. Any person skilled in the art who, without departing from the scope of the present invention, makes any equivalent substitution, modification, or other changes to the technical solution and technical content disclosed in the present invention shall be deemed to be within the scope of the present invention and still fall within the scope of protection of the present invention.

Claims

1. An ore screening device, characterized in that: include: An ore collecting box (4) with an open side, an ore cleaning assembly arranged in the ore collecting box (4), and a first ore screening assembly (6) and a second ore screening assembly (5) arranged in the ore collecting box (4) in an upper and lower relative manner, wherein the ore collecting box (4) is further provided with a first collecting chamber and a second collecting chamber; The collected ore falls into one end of the first ore screening component (6), and after the first ore screening component (6) screens out the ore with a size greater than or equal to a preset specification, it is washed clean by the ore cleaning component and collected in the first collection chamber; Ores smaller than the preset specifications fall from the first ore screening component (6) onto the second ore screening component (5), are washed clean by the ore cleaning component, and are collected in the second collection chamber; The first ore screening assembly (6) comprises a first front support shaft (15), a first rear support shaft (18) and a first screening belt; The first front support shaft (15) is arranged close to the open side of the ore collecting box (4), the first rear support shaft (18) is arranged away from the open side of the ore collecting box (4), the first rear support shaft (18) is arranged higher than the first front support shaft (15), the two ends of the first front support shaft (15) are respectively fixedly mounted on the two side walls of the ore collecting box (4), and the two ends of the first rear support shaft (18) are respectively rotatably mounted on the two side walls of the ore collecting box (4); The first front support shaft (15) is rotatably provided with a first sprocket (16) at both ends, the first rear support shaft (18) is coaxially fixedly provided with a roller sprocket (19), the first screening belt is sleeved on the first front support shaft (15) and the first rear support shaft (18), and the first sprocket (16) and the roller sprocket (19) are engaged with the first screening belt; The first rear support shaft (18) is driven by a first motor (29), and the first motor (29) is fixedly mounted on an outer wall surface of one side of the ore collecting box (4); The first screening belt comprises a chain conveyor belt composed of a plurality of identical adjustable baffle assemblies (20) connected in series in an articulated manner, and a specification adjustment mechanism for adjusting the screening specifications of the chain conveyor belt; The adjustable baffle assembly (20) includes a support plate (21), the support plate (21) is provided with four circular holes arranged at equal intervals in the longitudinal direction, an L-shaped screw (24) is rotatably passed through each of the circular holes, the vertical section of the L-shaped screw (24) is threaded and is threadedly connected to the end face of the adjustable baffle (23), the adjustable baffle (23) is located on the outer side of the support plate (21), the horizontal section of the L-shaped screw (24) is provided with an elliptical sliding hole (40), the sliding hole (40) is axially extended along the horizontal section of the L-shaped screw (24), and the horizontal section of the L-shaped screw (24) is located on the inner side of the support plate (21); Adjacent support plates (21) are rotatably connected in the form of hinges via connecting rods (26); cover plates (22) are fixedly mounted on both ends of the inner side of the support plates (21); the cover plates (22) have an arcuate surface; the first sprocket (16) and the roller sprocket (19) cooperate with the arcuate surface of the cover plates (22) to drive the chain conveyor belt to rotate; The specification adjustment mechanism is in transmission connection with the L-shaped screw (24) through the sliding hole (40), and the specification adjustment mechanism adjusts the rotation angle of the adjustable baffle (23) by adjusting the rotation angle of the L-shaped screw (24).

2. An ore screening device according to claim 1, characterized in that: The specification adjustment mechanism includes a transverse plate (27), an electric push rod (28) and a plurality of sliding rods (25) arranged in a one-to-one correspondence with the adjustable baffle assembly (20), four protruding cylinders (41) are arranged on the sliding rod (25) at equal intervals along the axial direction, the sliding rod (25) is arranged parallel to the first front support shaft (15), the protruding end of the cylinder (41) is movably inserted into the corresponding sliding hole (40), and a limiting plate (42) is provided at one end of the sliding rod (25); The sliding rod (25) is slidably arranged in the cover plate (22); An elliptical sliding groove (43) is provided on the inner side surface of the transverse moving plate (27), and the limiting plate (42) is embedded in the sliding groove (43) and slides along the sliding groove (43); The electric push rod (28) is fixedly mounted on the first front support shaft (15), and the electric push rod (28) is fixedly connected to the inner side surface of the transverse plate (27) to drive the transverse plate (27) to move closer to or away from the chain conveyor belt.

3. An ore screening device according to claim 2, characterized in that: A sleeve support seat (17) is fixedly sleeved on the first front support shaft (15), and a support plate extending radially outward along the sleeve support seat (17) is provided on the side wall of the sleeve support seat (17), and the electric push rod (28) is fixedly mounted on the support plate.

4. An ore screening device according to claim 1, characterized in that: The second ore screening assembly (5) comprises a second front support shaft (33), a second rear support shaft (35) and a second screening belt; The second front support shaft (33) is arranged close to the open side of the ore collecting box (4), the second rear support shaft (35) is arranged away from the open side of the ore collecting box (4), the second rear support shaft (35) is arranged higher than the second front support shaft (33), the two ends of the second front support shaft (33) are rotatably mounted on the two side walls of the ore collecting box (4), and the two ends of the second rear support shaft (35) are fixedly mounted on the two side walls of the ore collecting box (4); The second front support shaft (33) is fixedly mounted with a second sprocket (34) at both ends, the second rear support shaft (35) is rotatably mounted with a third sprocket (37), the second screening belt is sleeved on the second front support shaft (33) and the second rear support shaft (35), and the second sprocket (34) and the third sprocket (37) are engaged with the second screening belt; The second front support shaft (33) is driven by a second motor (31), and the second motor (31) is fixedly mounted on an outer wall surface of one side of the ore collecting box (4).

5. An ore screening device according to claim 4, characterized in that: The second screening belt comprises two chains (38) arranged opposite to each other and a plurality of baffles (39) connected between the two chains (38); the two chains (38) are respectively arranged at both ends of the baffles (39).

6. An ore screening device according to claim 5, characterized in that: The second rear support shaft (35) is provided with a limiting strip (44) extending in the axial direction and protruding outward.

7. An ore screening device according to claim 1, characterized in that: The ore cleaning component comprises a high-pressure water pump (7) and a plurality of cleaning guns, wherein the cleaning guns are connected to the high-pressure water pump (7) via water pipes, and the plurality of cleaning guns are respectively arranged corresponding to the first ore screening component (6) and the second ore screening component (5).

8. A deep-sea mining vehicle comprising a crawler chassis (2) and an ore collecting device (3) mounted at the front end of the crawler chassis (2), characterized in that: The crawler chassis (2) is also equipped with an ore screening device (1) as claimed in any one of claims 1 to 7.

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