Collecting-screening device and method for cleaning beach to-be-collected objects

Abstract

The invention discloses a collecting-screening device and method for cleaning beach objects to be collected. The collecting-screening device comprises a rotary collecting head, a sand shoveling plate, a vibrating screen and a material box. The rotary collecting head drives a driving rod through a motor to drive spirally arranged rake teeth to rotate in a reciprocating manner, and to-be-collected objects in sand are turned over to the surface layer; objects to be mined and sandy soil are guided into the vibrating screen through the inclined sand shoveling plate, the vibrating screen achieves horizontal reciprocating vibration through the front-back double-vibration transmission assembly, the transmission assembly is driven by the independent motor to provide power, and the sandy soil and the objects to be mined are effectively separated. And the screened to-be-collected materials slide into the tail material box through the vibrating screen for centralized collection. Modular design is adopted, automatic collection, efficient screening and centralized recovery of beach to-be-collected objects are achieved through the synergistic effect of the rotary rake teeth and the vibrating screen, and the beach to-be-collected object collecting device has the advantages of being compact in structure, high in operation continuity, high in environment adaptability and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of beach cleaning equipment. Specifically, it relates to a high-efficiency and high-reliability collection and screening device and method for cleaning beach materials to be mined. Background Art

[0002] With the increasingly serious global marine pollution problem, the cleaning of beach materials to be mined has become an important task for protecting the marine ecological environment and the environmental quality of coastal areas. Beach materials to be mined mainly include various types of solid waste such as garbage, gravel, shells, and ores, with complex compositions and wide distributions. Traditional methods for cleaning beach materials to be mined mainly rely on manual picking or simple mechanical sweeping. However, these methods have problems such as low efficiency, high labor intensity, and incomplete cleaning, facing efficiency bottlenecks in large-scale operations.

[0003] In recent years, mechanical equipment for cleaning beach materials to be mined has gradually developed. Among them, the collection and screening device for beach materials to be mined, as an efficient solution, has received extensive attention. Such devices usually collect materials to be mined through traditional mechanical structures such as buckets, and then use conveyor belts to transport the collected sand and materials to be mined to a vibrating screen for separation. However, the existing technology still has the following deficiencies: ① Low collection efficiency: Most use traditional mechanical structures such as buckets to collect materials to be mined. When the bucket collects materials to be mined, it is easy to scoop up a large amount of sand at the same time, which not only has a large resistance, high energy consumption, but also increases the workload of subsequent screening; ② Poor screening effect: Most use conveyor belts and vibrating screens to transport and screen materials to be mined, unable to screen impurities such as sand. The process is complex, and the structures of the conveyor belt and vibrating screen are complex, prone to failures and with high maintenance costs; ③ Low degree of automation: Most still require manual intervention for operation and adjustment, lacking an intelligent control system and unable to achieve efficient and stable automated operation; ④ Insufficient environmental friendliness: Most may cause damage to the beach ecological environment during operation, such as compaction of the beach and interference with marine organisms, and do not fully consider environmental protection requirements.

[0004] In summary, the existing collection and screening devices for beach materials to be mined still have many deficiencies in terms of collection efficiency, screening accuracy, terrain adaptability, degree of automation, and environmental friendliness, and urgently need to be further improved and optimized to meet the growing demand for cleaning beach materials to be mined. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a high-efficiency and high-reliability collection and screening device and method for cleaning beach materials to be mined, aiming to provide a more efficient and environmentally friendly solution for the collection and screening of beach materials to be mined such as beach garbage, gravel, ore, and / or shells.

[0006] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a collection and screening device for cleaning beach materials to be mined, including: a fixed support; a rotary collection head, including: a rotary drive rod installed on the front side of the fixed support; rake teeth composed of a plurality of rods spirally arranged at equal intervals on the rotary drive rod; a collection head motor disposed on the fixed support; a transmission belt drivingly connected between the collection head motor and the rotary drive rod, the collection head motor driving the rotary drive rod to rotate synchronously through the transmission belt, thereby driving the rake teeth to reciprocate rotationally from bottom to top; a sand shovel plate disposed on the fixed support behind the rotary collection head, the sand shovel plate being inclined as a whole towards the working direction and the front end of the sand shovel plate being slightly lower than the sand surface; a vibrating screen disposed below the fixed support behind the sand shovel plate, including: a vibrating screen mesh obliquely arranged with the front end lower and the rear end higher below the fixed support, and the front end of the vibrating screen mesh being communicated with the rear end of the sand shovel plate; a vibration transmission assembly, including two groups arranged front and rear, the front vibration transmission assembly being connected between the motor transmission assembly and the front end of the vibrating screen mesh, and the rear vibration transmission assembly being connected between the fixed support and the rear end of the vibrating screen mesh to suspend the vibrating screen mesh on the fixed support; a vibrating screen motor disposed on the fixed support and drivingly connected to the front vibration transmission assembly through the motor transmission assembly, the vibrating screen motor driving the vibrating screen mesh to reciprocate horizontally through the motor transmission assembly and the front vibration transmission assembly; a material box disposed at the rear side of the fixed support and below the rear end of the vibrating screen mesh for collecting the screened materials to be mined.

[0007] Preferably, the collection and screening device further includes a local control unit, and the local control unit includes vehicle-mounted cameras and an industrial control computer disposed on the fixed support on both sides of the rotary collection head. During operation, the vehicle-mounted cameras analyze the visual signals of the materials to be mined in the collection area in real time through a convolutional neural network, identify their density distribution, and feedback to the industrial control computer to adjust the power supply of the collection head motor and the vibrating screen motor.

[0008] Preferably, the material box is supported on the rear side of the fixed support through a main body bracket, the top of the material box is open, and the bottom is a detachable material box screen; a vibrating screen - material box connecting member is disposed between the material box and the vibrating screen, and both ends of the vibrating screen - material box connecting member are respectively hinged to the material box and the vibrating screen.

[0009] Preferably, the cross section of the vibration screen presents a continuous and multi-stage "V" shape of varying lengths, wherein the short side is close to the vertical direction and the long side forms an angle of 60° with the vertical direction.

[0010] Preferably, the vibrating screen is divided into two layers, an upper layer and an lower layer, which are arranged closely together, and the lower layer is driven by a built-in micro motor. The overlapping positions of the upper and lower screen holes are staggered by the horizontal relative movement between the lower and upper layers, thereby achieving continuous and rapid adjustment of the overlapping area of ​​the upper and lower screen holes from fully open to fully closed.

[0011] Preferably, the sand shoveling board is hinged to the fixed bracket via a plurality of sand shoveling board hinges, so that the sand shoveling board can rotate relative to the fixed bracket to adjust the angle of entry of the sand shoveling board into the soil.

[0012] Preferably, the angle between two adjacent rods of the rake teeth is 20°, and the transmission belt is a leather synchronous belt.

[0013] Preferably, an arc-shaped dust cover and a front cover plate are arranged in sequence above the rotary collection head, and the front cover plate is connected to the fixed bracket.

[0014] In a second aspect, the present invention provides a collection-screening method for cleaning up objects to be collected on a beach, based on the collection-screening device described in the first aspect of the present invention, the method comprises: The collection-screening device is installed on the beach cleaning equipment. The beach cleaning equipment moves along the planned walking path. The rake teeth of the rotary collection head rotate back and forth to lift the objects to be collected to the sand surface and preliminarily screen out the sand particles. The material to be mined enters the vibrating screen area along with the sand shoveling plate. The vibrating screen motor gives the front vibration transmission component a certain frequency of vibration parallel to the direction of the vibrating screen through the motor transmission component, driving the vibrating screen to vibrate back and forth. The relatively large-scale material to be mined moves upward in the vibrating screen due to inertia and finally falls into the material box; the smaller-scale sand and soil particles fall into the pores of the vibrating screen and are backfilled into the beach bottom. At the same time, the vibrating screen drives the material box to vibrate horizontally repeatedly through the vibrating screen-material box connector, so that the tiny particles that fall into the material box pass through the sieve holes at the bottom of the material box during vibration and backfill the beach bottom, ensuring that only the materials to be collected exist in the material box.

[0015] As a preferred embodiment, the vehicle-mounted camera controls the rotation speed of the rotary collection head and the frequency of the vibrating screen through the industrial computer based on the feedback algorithm according to the density of the objects to be collected under the rotary collection head, specifically: When the on-board camera detects that the concentration of the objects to be collected in front is greater than the density threshold, the collection-screening device switches to the fine operation mode: the power supply of the collection head motor and the vibrating screen motor is increased, and the rotation speed of the rotary collection head and the frequency of the vibrating screen are increased; When the on-board camera detects that the concentration of the objects to be collected in front is less than the density threshold, the collection-screening device switches to fast cruising mode: the power supply of the collection head motor and the vibrating screen motor is reduced, and the rotation speed of the rotary collection head and the frequency of the vibrating screen are reduced.

[0016] The present invention adopts the above technical solution, which has the following advantages: 1. The collection-screening device provided by the present invention adopts an integrated high-efficiency mechanical structure, which greatly improves the collection and screening efficiency of the objects to be collected on the beach. The rotary collection head adopts rake teeth arranged in an equidistant spiral, which has a simple structure, reduces the collection area, and reduces the forward resistance and energy consumption. During collection, the rod-shaped rake teeth can automatically draw in the larger objects to be collected, and rake up the garbage, gravel, ore and / or shells under the sand surface in turn, and preliminarily screen out the smaller sand and soil. This mode makes the device evenly stressed and the height from the bottom stable, which is conducive to obtaining a higher collection efficiency, stable equipment operation, and extending the life of the motor and gears. Contrary to the rotation direction of the collection head of the common cleaning device, the rake teeth rotate from the bottom to the front of the operation to prevent the stirred sand and dust from entering the mechanical structure behind the collection head, causing malfunctions. This arrangement can also make the objects to be collected on both sides converge to the middle, loosen the harder beach bottom, and further reduce the travel resistance.

[0017] 2. The adjustable sand shovel board at the rear side of the rotary collection head of the present invention can lift the collected materials raked by the rake teeth into the vibrating screen by setting a certain attack angle. The unique "V"-shaped screen of the vibrating screen drives the vibration transmission component to vibrate back and forth through the motor, so that the garbage and gravel waiting to be collected fall into the material box due to inertia, and the sand falls into the gap of the screen to fill the beach, realizing efficient, smooth and thorough screening of the collected materials and sand, reducing labor costs and the complexity of the processing process, thereby significantly enhancing the beach cleaning capacity.

[0018] 3. The present invention is provided with a vehicle-mounted camera, which can analyze the visual signals of the objects to be collected in the collection area in real time through a convolutional neural network during operation, identify their density distribution, and feed back to the local control unit to adjust the power supply power of the collection head motor and the vibrating screen motor, thereby realizing immediate collection after discovery. The sieve hole diameter can also be adjusted according to the scale of the objects to be collected, making the entire collection-screening process more intelligent and efficient, reducing the degree of manual intervention and improving the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The accompanying drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 The bottom view of the collection-sieving device provided in Embodiment 1 of the present invention; Figure 2 The perspective view of the collection-sieving device provided in Embodiment 1 of the present invention; Figure 3 The schematic diagram of the movement of the collected objects near the rotary collection head during the operation of the present invention; Figure 4 The schematic diagram of the movement of the collected objects near the sand-shoveling plate during the operation of the present invention; Figure 5 The schematic diagram of the movement of the collected objects at the vibrating screen during the operation of the present invention; Figure 6 The schematic diagram of the aperture change in the double-layer screen provided in Embodiment 1 of the present invention.

[0020] The reference numerals in the figures are as follows: 1 Rotary collection head; 2 Sand-shoveling plate; 3 Vibrating screen; 4 Material box; 5 Fixed support; 6 Vibrating screen-material box connecting piece; 7 Main body support; 8 Sand-shoveling plate hinge; 9 Vehicle-mounted camera; 10 Dust-proof cover; 11 Front cover plate; 12 Object to be collected; 13 Sandy particles; 14 Sand surface; 1-1 Rotary drive rod; 1-2 Rake teeth; 1-3 Collection head motor; Transmission belt 1-4; 3-1 Vibrating screen mesh; 3-2 Vibration transmission component; 3-3 Motor drive component; 3-4 Vibrating screen motor; Detailed embodiments

[0021] To make the purpose, technical solutions and advantages of the present invention clearer, the following further explains the specific embodiments of the present invention with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be completely conveyed to those skilled in the art.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0024] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0027] The collection-screening device for cleaning the objects to be collected on the beach provided by the present invention comprises a rotary collection head, a sand shoveling plate, a vibrating screen and a material box; the rotary collection head drives the active rod through a motor to drive the spirally arranged rake teeth to rotate back and forth, and turns the objects to be collected in the sand to the surface; the inclined sand shoveling plate guides the objects to be collected - sand and soil into the vibrating screen, and the vibrating screen realizes horizontal reciprocating vibration through the front and rear double vibration transmission components, and is powered by an independent motor-driven transmission component to effectively separate the sand and soil from the objects to be collected; the screened objects to be collected slide into the tail material box through the vibrating screen for centralized collection. The present invention adopts a modular design, and through the synergistic effect of the rotary rake teeth and the vibrating screen, it realizes the automated collection, efficient screening and centralized recovery of the objects to be collected on the beach, and has the characteristics of compact structure, strong operation continuity, high environmental adaptability, etc.

[0028] Below, the collection-screening device and method for cleaning the objects to be collected on the beach provided by the embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0029] Example 1 See also Figure 1 , Figure 2 The collecting and screening device for cleaning the beach to be collected provided in this embodiment comprises a rotary collecting head 1, a sand shoveling plate 2, a vibrating screen 3, a material box 4 and a fixed bracket 5. The rotary collecting head 1 comprises a rotary active rod 1-1, rake teeth 1-2, a collecting head motor 1-3 and a transmission belt 1-4. The rotary active rod 1-1 is rotatably mounted on the front side of the fixed bracket 5. The rake teeth 1-2 are composed of a plurality of rods equidistantly spirally arranged on the rotary active rod 1-1, and the angle between two adjacent rods is 20°. The collecting head motor 1-3 is arranged on the fixed bracket 5 and is connected to the rotary active rod 1-1 through the transmission belt 1-4. Thus, the collecting head motor 1-3 drives the rotary active rod 1-1 to rotate synchronously through the transmission belt 1-4, thereby driving the rake teeth 1-2 to rotate back and forth from the bottom to the forward direction. With the above arrangement, during the operation of the rotary collecting head 1, the objects 12 to be collected are raked up from under the sand surface 14 by the rake teeth 1-2 in sequence, and are lifted to the surface layer as the rotary active rod 1-1 rotates (seeFigure 3 ), in order to facilitate subsequent collection, this mode makes the device evenly stressed and the height from the ground stable, which is conducive to obtaining higher collection efficiency, the device runs smoothly, and the life of the collection head motor 1-3 and the rake teeth 1-2 is extended; at the same time, the shape of the rake teeth 1-2 rods and the larger spacing significantly reduce the effective area of ​​the collection part during the travel process, reduce the travel resistance, and reduce energy consumption; in addition, the rod-shaped rake teeth 1-2 with different phases can automatically roll the objects 12 to be collected with a relatively large scale of sand and soil into the rotary collection head 1, and the larger gap between adjacent rake teeth 1-2 can naturally leak the sand and soil particles with a smaller scale, realize the preliminary screening of the objects to be collected-sand and soil particles, and can also make the objects to be collected 12 on both sides converge to the middle, loosen the harder beach bottom, and further reduce the travel resistance; further, in contrast to the rotation direction of the collection head of the traditional cleaning device, the rake teeth 1-2 rotate from bottom to travel direction, which can also prevent the stirred sand and dust from entering the mechanical structure behind the rotary collection head 1 and causing failure. In addition, the transmission belt 1-4 can be a leather synchronous belt. Compared with the traditional sprocket, the leather synchronous belt can slip when the resistance threshold is exceeded. It can not only avoid the rake teeth 1-2 from colliding with beach stones and being damaged, but also is not easily blocked by fine sand and dust, thereby improving the reliability of the operation.

[0030] See also Figure 1 , Figure 4 The sand shoveling board 2 is arranged on a fixed bracket 5 located behind the rotary collecting head 1. The sand shoveling board 2 is tilted in the direction of movement as a whole, and the front end of the sand shoveling board 2 is slightly lower than the sand surface 14. The objects 12 to be collected, which are lifted to the sand surface 14 by the rotary collecting head 1, are further lifted at the sand shoveling board 2 due to an oblique upward force along with the movement of the device, and enter the vibrating screen 3 area behind.

[0031] See also Figure 1 , Figure 2 The vibrating screen 3 is arranged below the fixed bracket 5 behind the sand shoveling board 2, and includes a vibrating screen 3-1, a vibration transmission component 3-2, a motor transmission component 3-3 and a vibrating screen motor 3-4. The vibrating screen 3-1 is arranged obliquely below the fixed bracket 5 with the front lower and the rear higher, and the front end of the vibrating screen 3-1 is connected to the rear end of the sand shoveling board 2. The vibration transmission component 3-2 is arranged in two groups in front and back, the front vibration transmission component 3-2 is connected between the motor transmission component 3-3 and the front end of the vibrating screen 3-1, and the rear vibration transmission component 3-2 is connected between the fixed bracket 5 and the rear end of the vibrating screen 3-1 to suspend the vibrating screen 3-1 on the fixed bracket 5. The vibrating screen motor 3-4 is arranged on the fixed bracket 5, and is connected to the front vibration transmission component 3-2 through the motor transmission component 3-3, so that the vibrating screen motor 3-4 drives the vibrating screen 3-1 to vibrate back and forth through the motor transmission component 3-3 and the front vibration transmission component 3-2.

[0032] See alsoFigure 1 , the material box 4 is supported by the main body bracket 7 at the rear side of the fixed bracket 5 and is located below the rear end of the vibrating screen mesh 3-1 for collecting the to-be-mined material 12 after screening. The top of the material box 4 is open, and the bottom is a detachable material box screen. A vibrating screen-material box connecting piece 6 is arranged between the material box 4 and the vibrating screen 3. Both ends of the vibrating screen-material box connecting piece 6 are respectively hinged to the material box 4 and the vibrating screen 3. Through the above settings, different from the traditional mode, the material box 4 is no longer fixed on the fixed bracket 5. With the support of the main body bracket 7, the reciprocating horizontal vibration in the direction of the vibrating screen 3 can be converted into the synchronous reciprocating horizontal vibration of the material box 4, so that small particles such as sand and dust falling into the material box 4 can be backfilled into the beach bottom sediment through the screen holes at the bottom of the material box 4 during vibration, ensuring that only the to-be-mined material 12 exists in the material box 4, avoiding the accumulation of sand and dust in the stationary material box 4 and affecting the storage capacity of the material box 4, and significantly improving the cleaning efficiency of a single operation. After the operation is completed, the material box screen can be pulled out to take out the to-be-mined material 12.

[0033] In the above embodiment, preferably, please refer to Figure 5 , the cross-section of the vibrating screen mesh 3-1 presents a continuous and uneven multi-stage "V" shape, where the short side is close to the vertical direction and the long side forms a 60° angle with the vertical direction. Through the above settings, the to-be-mined material 12 with a relatively large size can be trapped in the "V" groove and is difficult to move downward. As the vibrating screen mesh 3-1 vibrates, the to-be-mined material 12 moves upward due to inertia and then falls into a "V" groove of a higher stage, and finally falls into the material box 4; on the contrary, the smaller sand and soil particles 13 directly fall into the screen holes of the vibrating screen mesh 3-1 and are backfilled into the beach bottom sediment to avoid soil erosion. More preferably, the vibrating screen mesh 3-1 is divided into two upper and lower layers arranged closely, and the overlapping area of the screen holes is adjusted according to the size of the to-be-mined material 12; specifically, please refer to Figure 6 , the lower vibrating screen mesh 3-1 is driven by a built-in micro motor (not shown in the figure). Through the horizontal relative movement between the lower vibrating screen mesh 3-1 and the upper vibrating screen mesh 3-1, the overlapping position of the upper and lower screen holes is staggered, realizing the continuous and rapid adjustment of the overlapping area of the upper and lower screen holes from 100% (fully open) to 0% (fully closed), making the device widely adaptable to various common to-be-mined materials including garbage, gravel, ore, and / or shells. The whole process is efficient and smooth, greatly improving the collection and screening efficiency of the beach to-be-mined materials.

[0034] In the above embodiment, preferably, please refer to Figure 1, the sand shovel plate 2 is hinged to the fixed support 5 through a plurality of sand shovel plate hinges 8, so that the sand shovel plate 2 can rotate relative to the fixed support 5 to adjust the entry angle of the sand shovel plate 2 into the soil. Through the above settings, the entry angle of the sand shovel plate 2 can be adjusted according to different geological conditions, avoiding the increase of the device energy consumption due to meaningless obstruction of the sand shovel plate 2. Specifically, when the geology is relatively hard (the shear strength is relatively large), the collection efficiency of the rotary collection head 1 is relatively low. At this time, the entry angle of the sand shovel plate 2 can be increased; when the geology is relatively soft, the entry angle of the sand shovel plate 2 can be appropriately reduced.

[0035] In the above embodiment, preferably, please continue to refer to Figure 1 , the collection and screening device further includes a local control unit, which realizes the identification of the object to be collected and the adjustment of the device attitude at a short distance, and at the same time synthesizes the input information to adjust the power supply of the collection head motor 1-3 and the vibrating screen motor 3-4 to control the rotation speed of the rotary collection head 1 and the frequency of the vibrating screen 3 respectively, so as to realize collection as soon as it is discovered and avoid power waste. Specifically, the local control unit includes a vehicle-mounted camera 9 and an industrial computer (not shown in the figure) arranged on the fixed supports 5 on both sides of the rotary collection head 1. During the operation, the vehicle-mounted camera 9 analyzes the visual signals of the object to be collected 12 in the collection area in real time through a convolutional neural network (CNN), identifies its density distribution, and feeds it back to the industrial computer to adjust the power supply of the collection head motor 1-3 and the vibrating screen motor 3-4, realizing the integration of the search-identification-collection technology and greatly improving the intelligence and automation level of the collection and screening device.

[0036] In the above embodiment, preferably, please continue to refer to Figure 1 , an arc-shaped dust cover 10 and a front cover plate 11 are arranged in sequence above the rotary collection head 1. The front cover plate 11 is connected to the fixed support 5, which is used to prevent the flying sand and dust from entering the core area of the collection and screening device, reduce the risk of failure, and at the same time avoid the exposure of the mechanical structure.

[0037] Embodiment 2 Based on the collection and screening device provided in the above Embodiment 1, this embodiment also provides a collection and screening method for cleaning the objects to be collected on the beach, including: S100. Install the collection and screening device on the beach cleaning equipment. The beach cleaning equipment travels along the planned walking path. The rake teeth 1-2 of the rotary collection head 1 rotate reciprocally to lift the object to be collected 12 to the sand surface 14, and at the same time initially screen out the sand and soil particles 13; S200. The object to be collected 12 enters the vibrating screen 3 area along with the sand shovel plate 2. The vibrating screen motor 3-4 gives a certain frequency and vibration parallel to the direction of the vibrating screen 3 to the front vibration transmission component 3-2 through the motor transmission component 3-3, driving the vibrating screen mesh 3-1 to vibrate reciprocally. The object to be collected 12 with a relatively large size gets stuck in the "V"-shaped groove of the vibrating screen mesh 3-1, moves upward due to inertia, and finally falls into the material box 4; the sand particles with a relatively small size fall into the pores of the vibrating screen mesh 3-1 and are backfilled into the beach sediment. S300. At the same time, the vibrating screen 3 drives the material box 4 to vibrate horizontally synchronously and repeatedly through the vibrating screen - material box connecting piece 6, so that the tiny particles such as sand and dust falling into the material box 4 are backfilled into the beach sediment through the sieve holes at the bottom of the material box 4 during vibration, ensuring that only the object to be collected 12 exists in the material box 4. S400. After the operation is completed, the material box sieve mesh at the bottom of the material box 4 is taken out to obtain the object to be collected 12.

[0038] In the above embodiments, preferably, when performing step S100, the vehicle-mounted camera 9 controls the rotation speed of the rotary collection head 1 and the frequency of the vibrating screen 3 through the industrial control computer based on the feedback algorithm according to the density of the object to be collected below the rotary collection head 1 identified. The higher the density of the object to be collected, the faster the rotation speed of the rotary collection head 1 and the greater the frequency of the vibrating screen 3. Specifically, when the vehicle-mounted camera 9 detects that the aggregation degree of the object to be collected in front is greater than the density threshold, the collection - screening device switches to the fine operation mode: increases the power supply of the collection head motor 1-3 and the vibrating screen motor 3-4, and increases the rotation speed of the rotary collection head 1 and the frequency of the vibrating screen 3; when the vehicle-mounted camera 9 detects that the aggregation degree of the object to be collected in front is less than the density threshold, the collection - screening device switches to the fast cruise mode: reduces the power supply of the collection head motor 1-3 and the vibrating screen motor 3-4, and reduces the rotation speed of the rotary collection head 1 and the frequency of the vibrating screen 3. This dynamic real-time speed regulation strategy reduces the energy consumption per unit area and improves the collection - screening efficiency of objects to be collected such as garbage, gravel, ore or shellfish.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A collection and screening device for cleaning up objects to be collected on a beach, characterized in that: include: Fixed bracket; Rotating collection head, including: A rotary active rod, mounted on the front side of the fixed bracket; The rake teeth are composed of a plurality of rods which are equidistantly and spirally arranged on the rotary active rod; A collection head motor is arranged on the fixed bracket; A transmission belt is connected between the collecting head motor and the rotary active rod, and the collecting head motor drives the rotary active rod to rotate synchronously through the transmission belt, thereby driving the rake teeth to reciprocate from bottom to top; A sand shoveling board is arranged on the fixed bracket located behind the rotary collecting head, the sand shoveling board is tilted toward the moving direction as a whole, and the front end of the sand shoveling board is slightly lower than the sand surface; A vibrating screen is arranged below the fixed support behind the sand shoveling plate, and comprises: A vibrating screen is arranged obliquely below the fixed bracket with a lower front and a higher rear, and the front end of the vibrating screen is connected to the rear end of the sand shoveling plate; The vibration transmission assembly is composed of two groups arranged front and back, the front vibration transmission assembly is connected between the motor transmission assembly and the front end of the vibration screen, and the rear vibration transmission assembly is connected between the fixed bracket and the rear end of the vibration screen to suspend the vibration screen on the fixed bracket; A vibrating screen motor is arranged on the fixed bracket and is connected to the front vibration transmission assembly through the motor transmission assembly. The vibrating screen motor drives the vibrating screen to reciprocate horizontally through the motor transmission assembly and the front vibration transmission assembly. The material box is arranged at the rear side of the fixed bracket and is located below the rear end of the vibrating screen, and is used to collect the screened materials to be collected.

2. The collection-screening device according to claim 1, characterized in that: It also includes a local control unit, which includes a vehicle-mounted camera and an industrial computer arranged on the fixed brackets located on both sides of the rotary collection head. During operation, the vehicle-mounted camera uses a convolutional neural network to analyze the visual signals of the objects to be collected in the collection area in real time, identify their density distribution, and feed back to the industrial computer to adjust the power supply power of the collection head motor and the vibrating screen motor.

3. The collection-screening device according to claim 2, characterized in that: The material box is supported on the rear side of the fixed bracket through a main body bracket, the top of the material box is open, and the bottom is a detachable material box screen; a vibrating screen-material box connecting piece is arranged between the material box and the vibrating screen, and both ends of the vibrating screen-material box connecting piece are respectively hinged to the material box and the vibrating screen.

4. The collection-screening device according to claim 3, characterized in that: The cross section of the vibration screen presents a continuous and multi-level "V" shape with varying lengths, wherein the short side is close to the vertical direction and the long side forms an angle of 60° with the vertical direction.

5. The collection-screening device according to claim 4, characterized in that: The vibrating screen is divided into two layers, an upper layer and an lower layer, which are arranged closely together. The lower layer is driven by a built-in micro motor. The overlapping positions of the upper and lower screen holes are staggered through the horizontal relative movement between the lower and upper layers, thereby achieving continuous and rapid adjustment of the overlapping area of ​​the upper and lower screen holes from fully open to fully closed.

6. The collection-screening device according to claim 5, characterized in that: The sand shoveling board is hinged to the fixed bracket through a plurality of sand shoveling board hinges, so that the sand shoveling board can rotate relative to the fixed bracket to adjust the soil entry angle of the sand shoveling board.

7. The collection-screening device according to claim 6, characterized in that: The angle between two adjacent rods of the rake teeth is 20°, and the transmission belt is a leather synchronous belt.

8. The collection-screening device according to claim 7, characterized in that: An arc-shaped dust cover and a front cover plate are arranged in sequence above the rotary collection head, and the front cover plate is connected to the fixed bracket.

9. A collection-screening method for cleaning up objects to be collected on a beach, based on the collection-screening device according to any one of claims 2 to 8, characterized in that: The method includes: The collection-screening device is installed on the beach cleaning equipment. The beach cleaning equipment moves along the planned walking path. The rake teeth of the rotary collection head rotate back and forth to lift the objects to be collected to the sand surface and preliminarily screen out the sand particles. The material to be mined enters the vibrating screen area along with the sand shoveling plate. The vibrating screen motor gives the front vibration transmission component a certain frequency of vibration parallel to the direction of the vibrating screen through the motor transmission component, driving the vibrating screen to vibrate back and forth. The relatively large-scale material to be mined moves upward in the vibrating screen due to inertia and finally falls into the material box; the smaller-scale sand and soil particles fall into the pores of the vibrating screen and are backfilled into the beach bottom. At the same time, the vibrating screen drives the material box to vibrate horizontally repeatedly through the vibrating screen-material box connector, so that the tiny particles that fall into the material box pass through the sieve holes at the bottom of the material box during vibration and backfill the beach bottom, ensuring that only the materials to be collected exist in the material box.

10. The collection-screening method according to claim 9, characterized in that: The vehicle-mounted camera controls the rotation speed of the rotary collection head and the frequency of the vibrating screen through the industrial computer based on the feedback algorithm according to the density of the objects to be collected under the rotary collection head, specifically: When the on-board camera detects that the concentration of the objects to be collected in front is greater than the density threshold, the collection-screening device switches to the fine operation mode: the power supply of the collection head motor and the vibrating screen motor is increased, and the rotation speed of the rotary collection head and the frequency of the vibrating screen are increased; When the on-board camera detects that the concentration of the objects to be collected in front is less than the density threshold, the collection-screening device switches to fast cruising mode: the power supply of the collection head motor and the vibrating screen motor is reduced, and the rotation speed of the rotary collection head and the frequency of the vibrating screen are reduced.

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