Intelligent bulk grain screw unloading equipment and its control method

Abstract

This invention relates to the field of ship unloading, specifically providing an intelligent bulk grain screw unloading device and control method. The device includes: a screw feeding structure for sequential material entry, a vertical screw lifting structure with adjustable pitch, a belt conveyor structure, a rotary structure, and an unloading structure. The vertical screw lifting structure includes: a turntable housed within its casing and two or more vertical screw elevators. All vertical screw elevators are arranged in parallel and fixedly connected to the turntable. The turntable, driven by a drive motor, pulls one of the screw elevators onto the material conveying path. The pitches of any two vertical screw elevators are different. The drive motor is signal-connected to a controller. This invention determines a suitable pitch based on the material type and then moves the vertical screw elevator with that pitch onto the material conveying path. By matching vertical screw elevators with different pitches to different material types, unloading efficiency can be improved, and the stability of unloading efficiency can be maintained.

Description

Technical Field

[0001] This invention relates to the field of unloading, specifically to an intelligent bulk grain spiral unloading equipment and its control method. Background Technology

[0002] With the rapid development of the global water transport industry, port loading and unloading machinery is also developing towards higher efficiency, larger scale, and greater specialization. In recent years, my country's grain trade has gained increasing prominence and expanded in scale, and the rapid development of bulk grain handling in the shipping industry has made screw unloaders, as a high-performance continuous bulk unloading equipment, highly favored by ports due to their comprehensive advantages such as environmental friendliness, high unloading capacity, and low dust generation during operation. Therefore, this efficient and environmentally friendly grain conveying machinery has broad market prospects. However, although screw unloaders have many advantages, their efficiency varies when unloading different materials, resulting in less than ideal unloading effects. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The purpose of this invention is to provide an intelligent bulk grain screw unloading device and a control method for the intelligent bulk grain screw unloading device, so as to solve the problem of unstable unloading efficiency.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, the present invention provides an intelligent bulk grain spiral unloading equipment, which includes: a spiral feeding structure for sequential material entry, a vertical spiral lifting structure with adjustable pitch, a belt conveying structure, a rotary structure, and an unloading structure.

[0007] The vertical spiral lifting structure includes: a turntable disposed within its housing and two or more vertical spiral elevators. All the vertical spiral elevators are arranged in parallel and are fixedly connected to the turntable. Under the action of a drive motor, the turntable drives one of the spiral elevators into the material conveying path. The pitches of any two vertical spiral elevators are different. The drive motor is signal-connected to the controller.

[0008] In some embodiments, preferably, the feed inlet of the vertical screw conveyor on the material conveying path is connected to the discharge outlet of the screw feeding structure, the discharge outlet is connected to the first separation bend, and the belt conveyor structure is disposed on the material falling path of the first separation bend.

[0009] In some embodiments, preferably, the upper part of the housing of the vertical spiral lifting structure is provided with a discharge port and the lower part is provided with a feed port. The feed port of the spiral elevator entering the material conveying path is connected to the feed port, and the discharge port is connected to the discharge port. The discharge port is connected to the first separation bend, and the belt conveyor structure is arranged on the material falling path of the first separation bend.

[0010] In some embodiments, preferably, the turntable includes an upper turntable and a lower turntable, the upper turntable and the lower turntable are provided with vertically opposite connection positions to fix the vertical screw elevator, and the upper turntable and the lower turntable rotate synchronously under the action of the drive motor.

[0011] In some embodiments, preferably, the vertical spiral elevator includes: a tube body and a main shaft disposed within the tube body, wherein spiral blades or a spiral conveyor belt are mounted on the main shaft.

[0012] In some embodiments, preferably, the rotary structure includes: a lower support, a rotary support, and an upper support arranged sequentially from bottom to top; the rotary support is configured with a drive structure for rotating about its longitudinal central axis; the drive structure includes: a drive motor, an output shaft, and a pinion disposed at the output end of the output shaft; the pinion meshes with a vertical rack of the upper support; and the drive motor is fixedly mounted on the lower support.

[0013] In some embodiments, preferably, the intelligent bulk grain spiral unloading equipment further includes: a traveling support, which includes: a base frame, the bottom of which is provided with traveling wheels, and a conveying channel is opened at the top. The rotating structure is fixedly installed on the edge of the conveying channel, and the upper part of the conveying channel is connected to the material channel of the rotating structure; the lower part of the conveying channel is connected to the unloading structure.

[0014] In some embodiments, preferably, the unloading structure is fixedly installed on the traveling support, and the unloading structure includes: a vibrating unloader and a conveyor belt. The vibrating unloader is installed around the lower end of the conveying channel, the material channel of the vibrating unloader is connected to the conveying channel, and the discharge port of the vibrating unloader is located above the conveyor belt.

[0015] In some embodiments, preferably, the intelligent bulk grain spiral unloading equipment further includes: a pitching structure, the pitching structure being rotatably mounted on the slewing structure;

[0016] The upper end of the shell of the vertical spiral lifting structure is rotatably mounted on one end of the pitching structure.

[0017] The belt conveyor structure is movably installed on the pitching structure.

[0018] In some embodiments, preferably, the pitching structure includes: a tripod and a hydraulic cylinder, wherein the fixed end of the hydraulic cylinder is rotatably connected to the rotary structure, and the pushing end is rotatably connected to the bottom edge of the tripod; one bottom corner of the tripod is rotatably connected to the vertical spiral lifting structure, and the other bottom corner is fixedly fitted with a counterweight; the belt conveyor structure is rotatably mounted on the bottom edge of the tripod.

[0019] In some embodiments, preferably, the belt conveyor structure includes: an outer cover support and a belt conveyor assembly disposed on the outer cover support.

[0020] The present invention also provides a control method for the aforementioned intelligent bulk grain spiral unloading equipment, comprising:

[0021] Obtain the types of materials;

[0022] The pitch corresponding to the material type is determined by comparing the material type with a preset material type-pitch relationship diagram.

[0023] The turntable in the vertical spiral lifting structure is controlled according to the pitch to rotate the vertical spiral elevator with the pitch onto the material conveying path;

[0024] The hydraulic cylinder that controls the pitch structure drives the pitch structure to tilt, thereby moving the vertical spiral lifting structure up or down to the target position.

[0025] The spiral feeding structure is controlled to spiral material into the bin and then unload it.

[0026] Control the rotation of the rotary structure to drive the pitching structure, the vertical spiral lifting structure, and the belt conveyor structure to rotate on the horizontal plane;

[0027] The driver controls the traveling support, which in turn moves the traveling support, driving the rotation structure, pitch structure, vertical spiral lifting structure, and belt conveyor structure to move.

[0028] (III) Beneficial Effects

[0029] The intelligent bulk grain screw unloading equipment provided by this invention includes: a screw feeding structure for sequential material entry, a vertical screw lifting structure with adjustable pitch, a belt conveyor structure, a rotary structure, and an unloading structure. The vertical screw lifting structure includes: a turntable housed within its casing and two or more vertical screw elevators. All vertical screw elevators are arranged in parallel and fixedly connected to the turntable. The turntable, driven by a drive motor, pulls one of the screw elevators onto the material conveying path. The pitches of any two vertical screw elevators are different. The drive motor is signal-connected to a controller. This invention determines a suitable pitch based on the material type and then moves a vertical screw elevator with that pitch onto the material conveying path. By matching vertical screw elevators with different pitches to different material types, the unloading efficiency can be improved, and the stability of the unloading efficiency can be maintained.

[0030] The pitching structure forms a parallelogram structure, ensuring that the vertical screw conveyor on the material conveying path always maintains a vertical lifting state, which can further improve conveying efficiency.

[0031] The ship unloader's traveling, slewing, and pitching mechanisms enable the screw feeder to reach any position inside the ship. The screw unloader's vertical screw lifting structure has a small cross-sectional dimension, and its traveling, pitching, and slewing mechanisms make the machine highly flexible in operation. Its material conveying system is fully enclosed, preventing dust, material leakage, and odor leakage during operation. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of an intelligent bulk grain spiral unloading device in one embodiment of the present invention;

[0033] Figure 2 for Figure 1 Front view diagram;

[0034] Figure 3 This is a schematic diagram of a vertical spiral lifting structure in one embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of a vertical spiral lifting structure in another embodiment of the present invention;

[0036] Figure 5 This is a side view of the walking support in one embodiment of the present invention;

[0037] Figure 6 This is a top view of a walking support frame in one embodiment of the present invention;

[0038] Figure 7 These are two positional diagrams of the pitch structure in one embodiment of the present invention;

[0039] Figure 8 These are two positional diagrams of the rotating structure in one embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the slewing bearing in one embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the walking structure in one embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the maximum elevation angle workstation model of the ship unloader in one embodiment of the present invention;

[0043] Figure 12 This is a schematic diagram of a horizontal workstation model of a ship unloader in one embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of the maximum depression angle workstation model of the ship unloader in one embodiment of the present invention.

[0045] Note: 1. Screw feeding structure, 2. Vertical screw lifting structure, 3. Belt conveyor structure, 4. Outer cover support, 5. Hydraulic cylinder, 6. Triangle frame, 7. Counterweight, 8. Rotary structure, 9. Upper support, 10. Slewing bearing, 11. Lower support, 12. Base frame, 13. Movable chute, 14. Fixed chute, 15. Pin a, 16. Pin b, 17. Pin c, 18. Pin d, 19. Pin e, 20. Traveling wheel, 21. Conveyor belt, 22. Vibrating unloader, 23. Turntable, 24. Vertical screw conveyor, 26. Connecting winch, 27. Upper balance beam, 28. Lower balance beam, 29. Drive unit, 30. Car set, 54. Brake, 55. Electric motor, 56. Reducer, 57. Pinion. Detailed Implementation

[0046] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0047] To address the challenges of intelligent operation of ship unloaders and improve unloading efficiency and stability, this invention provides an intelligent bulk grain spiral unloading device and its control method.

[0048] This invention provides an intelligent bulk grain screw unloading device, such as... Figure 1-2As shown, the system includes: a spiral feeding structure 1 for sequential material entry, a vertical spiral lifting structure 2 with adjustable pitch, a belt conveyor structure 3, a rotary structure 8, and a discharge structure. The vertical spiral lifting structure 2 includes: a turntable 23 housed within its casing and two or more vertical spiral elevators 24. All vertical spiral elevators 24 are arranged in parallel and fixedly connected to the turntable 23. The turntable 23, under the action of a drive motor, drives one of the spiral elevators into the material conveying path. The pitches of any two vertical spiral elevators 24 are different. The drive motor is connected to a controller. The vertical spiral elevator 24 includes: a tube body and a main shaft housed within the tube body. Spiral blades or a spiral conveyor belt 21 are mounted on the main shaft.

[0049] This intelligent bulk grain spiral unloading equipment has a vertical spiral lifting structure 2 equipped with multiple vertical spiral elevators 24 with different screw pitches. The multiple vertical spiral elevators 24 are installed on a turntable 23. By rotating the turntable 23, the vertical spiral elevators 24 are driven to rotate. The vertical spiral elevators 24 with screw pitches matched to the material type are used to transport materials. By using vertical spiral elevators 24 with different screw pitches matched to the material type, the unloading efficiency is improved and the stability of unloading is maintained.

[0050] In some embodiments, the housing of the vertical spiral lifting structure 2 is fixed on a truss, and a turntable 23 is movably connected inside the housing (for example, a turntable rotation track is provided on the inner wall of the housing, and the turntable 23 is mounted on the turntable rotation track; or, for example, grooves are provided on the top and bottom walls of the housing, and the top and bottom ends of the rotating shaft are movably installed in the two grooves, and when the rotating shaft rotates, the top and bottom ends rotate in the grooves, and the turntable 23 is fixedly sleeved on the rotating shaft; or, for example, grooves are provided on the top and bottom walls of the housing, and the top and bottom ends of the central shaft are fixedly installed in the grooves, and the turntable 23 is movably sleeved on the central shaft, and the turntable 23 rotates around the central shaft).

[0051] In some embodiments, the upper part of the shell of the vertical screw conveyor structure 2 is provided with a discharge port, and the lower part is provided with a feed port. The feed port of the vertical screw conveyor on the material conveying path is connected to the feed port, and the discharge port is connected to the discharge port. The discharge port is connected to the first separation bend, and the belt conveyor structure 3 is arranged on the material falling path of the first separation bend. In other embodiments, the vertical screw conveyor 24 passes through the shell of the vertical screw conveyor structure 2. The feed port of the vertical screw conveyor 24 on the material conveying path is connected to the discharge port of the screw feeding structure 1, and the discharge port is connected to the first separation bend. The belt conveyor structure 3 is arranged on the material falling path of the first separation bend.

[0052] like Figure 11-13 To ensure that the screw unloader has the capability to unload grain particles from the bilge, the calculation formula for the length H of the material lifting section (including the screw feeding mechanism) is as follows:

[0053]

[0054] Where C represents the draft difference between empty and fully loaded;

[0055] When α is the maximum elevation angle position, the tilt angle of the pitch mechanism;

[0056] S is the length of the horizontal (small angle) transport section;

[0057] Meanwhile, when operating at the maximum downward angle position, to ensure no interference occurs between the various working parts of the spiral unloading equipment and between the various working parts of the spiral unloading equipment and the hull, the formula for calculating the length H of the material lifting section is:

[0058]

[0059] Where B is the cabin width;

[0060] D represents the depth of the ship's cabin.

[0061] The calculations show that H > 18.6m and α > 35.3°. Considering factors such as tidal fluctuations, H is set to 19m, and α should be between 35.3° and 37.4°.

[0062] Considering the large size and heavy weight of the vertical screw conveyor 24, its unstable rotation and tendency to misalignment during drive are significant factors. Figure 3 , Figure 4 An upper turntable is provided at the top of the housing and a lower turntable is provided at the bottom. Therefore, the turntable 23 includes an upper turntable and a lower turntable. The upper turntable and the lower turntable are provided with vertically opposite connection positions to fix the vertical screw elevator 24. The upper turntable and the lower turntable rotate synchronously under the action of the drive motor.

[0063] To facilitate the upward or downward movement of the vertical spiral lifting structure, the intelligent bulk grain spiral unloading equipment is equipped with a pitching structure. The pitching mechanism is rotatably mounted on the rotating structure; the upper end of the shell of the vertical spiral lifting structure 2 is rotatably mounted on one end of the pitching structure; and the belt conveyor structure 3 is movably mounted on the pitching structure. The pitching structure ensures that the vertical spiral lifting structure remains vertically upward during conveying operations, guaranteeing conveying efficiency. Figure 7 .

[0064] The pitching structure includes: a tripod 6 and a hydraulic cylinder 5. The fixed end of the hydraulic cylinder 5 is rotatably connected to the rotary structure 8, and the pushing end is rotatably connected to the bottom edge of the tripod 6. One bottom corner of the tripod 6 is rotatably connected to the vertical spiral lifting structure 2, and the other bottom corner is fixedly installed with a counterweight 7. The belt conveyor structure 3 is rotatably installed on the bottom edge of the tripod 6.

[0065] The pitch control of the screw unloader is achieved through a parallelogram mechanism. The parallelogram mechanism has the characteristic of maintaining the parallelism of the relative structures during the movement. Therefore, by fixing one of the rods to keep it vertical, the vertical lifting section (vertical screw elevator) can always maintain a vertical working state during the operation of the bulk grain unloader, so as to maximize the advantages of the screw elevator in terms of high working efficiency and large lifting angle.

[0066] The pitching mechanism is driven by two symmetrically arranged hydraulic cylinders 5. To meet working conditions, the upper triangular frame 6 is used as the lower side of the parallelogram mechanism. This design also saves space and reduces the torque on the support shaft. The belt conveyor structure support truss (the outer cover bracket 4 of the belt conveyor structure) is used as the upper side of the parallelogram mechanism. The two longitudinal hinge points (connected by pins a15 and b16) are designed on the truss of the vertical lifting section (the mounting truss of the vertical spiral lifting structure shell) and the main support structure of the upper triangular frame, respectively. To meet the requirements of the belt conveyor thickness, the unloading structure design, and the stability requirements of the mechanical structure, the main support structure of the upper triangular frame is designed as a triangular stable structure. The hydraulic cylinders are connected to the triangular frame through the connecting holes below the snap-fit ​​parts and the pin c17. To ensure that the parallelogram mechanism does not interfere with the vertical distance when it is in a downward-facing position, it is necessary to design the relative coordinates of the vertically staggered hinge points (connected by pins d18 and e19) ​​of the parallelogram mechanism in a horizontal position, for example, (1500mm, 3500mm), with a horizontal distance L1 = 1.5m and a vertical distance L2 = 3.5m.

[0067] When the tripod is perpendicular to the wind direction, the maximum value of the wind resistance torque generated by the wind is:

[0068] T wmax =F WQ R+∑F WG L (4)

[0069] Among them, F wQ The wind force received by the vertically lifted section;

[0070] R represents the calculated working radius of the ship unloader; for rotary boom type port machinery, the radius is the horizontal distance from the rotation centerline to the spreader centerline.

[0071] F wG The wind force experienced by all components of the ship unloader during rotation;

[0072] L is the distance from the wind load points of each part of the ship unloader's rotation to the center of rotation of the ship unloader. T w The direction is related to the direction of wind force, T wThe size is mainly affected by the wind force on the horizontal transmission section and the vertical lifting section, as well as the distance between the point of wind action and the center of operation of the slewing mechanism.

[0073] It also needs to meet the requirement that large port machinery can operate at a maximum speed of 35 m / s, approximately 0.85 kN / m. 2 Under wind conditions, when operating in the position subjected to the maximum wind force, it will not overturn. The calculation formula is as follows:

[0074]

[0075] Where T wMAX This refers to the torque exerted by the ship unloader on the center line of rotation when it is in its maximum wind-force operating position.

[0076] A is T wMAX The fitting value is the distance from the point of application of the single-phase force to the center line of rotation.

[0077] L is the track gauge of the traveling mechanism of the ship unloader;

[0078] S is the span of the traveling mechanism of the trolley used in the ship unloader;

[0079] B is the base distance of the traveling mechanism of the trolley used in the ship unloader;

[0080] The belt conveyor structure includes an outer cover support 4 and a belt conveyor assembly disposed within the outer cover support 4. The discharge end of the belt conveyor structure is sequentially connected to a movable chute 13 and a fixed chute 14, from which the material enters the conveying channel of the rotary structure. The belt conveyor structure moves with the pitching structure, possessing the ability to transport materials at a certain angle. Since the belt conveyor assembly adopts a horizontal belt conveyor, it has a certain small-angle conveying capability, enabling the transport of granular materials at a pitching angle of up to 17°. This characteristic is used to compensate for changes in the draft and internal height of the ship being unloaded by the screw unloader. In some embodiments, the screw unloader selects a maximum pitching angle position of 15°.

[0081] To ensure that the spiral unloader has the capacity to unload all materials across the entire width of the ship's hold, Figure 8 The formula for calculating the maximum rotation angle β1 of the middle left workstation is:

[0082] S-Scosβ≥B (3)

[0083] S is the length of the horizontal (small angle) transport section;

[0084] Therefore, β1 = 55°.

[0085] Similarly, the maximum rotation angle of the right workstation is β2 = β1 = 55°.

[0086] The slewing structure 8 is a crucial working structure of the screw unloader. The unloader uses the rotational movement of the slewing structure 8 on the horizontal plane to adjust the position of the screw feeding structure 1, thereby achieving accurate positioning of the feeding device and compensation in the beam direction of the ship's hold during material removal. Figure 8 As shown. The slewing structure 8 consists of a slewing support 10 assembly and a slewing drive assembly. The slewing support 10 assembly is mainly used to ensure that the slewing part of the ship unloader has a defined rotational motion and to bear the vertical force, horizontal force, and overturning moment applied to it by the slewing part of the ship unloader. The slewing drive equipment is used to provide rotational power to the slewing part of the ship unloader.

[0087] The slewing structure 8 includes, from bottom to top, a lower support 11, a slewing support 10, and an upper support 9. The slewing support 10 is equipped with a drive structure that rotates around its longitudinal central axis. The drive structure includes a motor 55, a brake 54, a reducer 56, an output shaft, and a pinion 57 disposed at the output end of the output shaft. The pinion 57 meshes with the vertical rack of the upper support 9. The motor 55 is fixedly mounted on the lower support 11. The upper support 51 (upper slewing table) is fixedly connected to the outer ring of the slewing support 10, and the lower support (traffic frame) is fixedly connected to the inner ring of the slewing support 10. When the slewing mechanism starts, the motor 55, under the control of the electrical control equipment, is energized and accelerates to a stable speed. Simultaneously, it drives the reducer 56 and pinion 57 to rotate at a certain speed. The external gear of the slewing support 10 bearing rotates slowly at a certain speed under the drive of the pinion 57, causing relative rotational motion between the upper slewing platform and the trolley traveling structure. This, in turn, drives the upper slewing platform and its upper pitching structure, as well as the unloader's vertical spiral lifting structure and belt conveyor structure 3, to rotate while the trolley traveling structure travels on the track. When stopping, under the control of the electrical control equipment, the motor begins to decelerate and applies electrical braking. With the cooperation of the mechanical brake, the upper slewing platform gradually decelerates until it stops. Since the slewing mechanism in this unloader needs to achieve a 55° left / right tilt angle, but the rotational speed during the slewing process is slow and will not cause impact, a limiting mode using mechanical limits as the primary method and electrical limits as a secondary method is selected between the upper slewing platform and the trolley traveling frame to avoid impact. Considering that the slewing structure of the unloading equipment is a large mechanical device with high average load and heavy workload, multi-row raceway type slewing bearings are preferred.

[0088] Intelligent bulk grain screw unloading equipment also includes a traveling support frame, such as... Figure 5 , Figure 6 The spiral unloader is driven to any position in the silo. It includes: a base frame 12, with wheels 20 at the bottom and a conveying channel at the top. A rotating structure 8 is fixedly installed on the edge of the conveying channel, and the upper part of the conveying channel is connected to the material channel of the rotating structure 8; the lower part of the conveying channel is connected to the unloading structure.

[0089] The traveling support consists of six main components: an upper balance beam 27, a lower balance beam 28, a connecting hinge 26, trolley assemblies 30, traveling wheels 20, and a drive unit 29. The traveling trolley, equipped with two traveling wheels 20, is hinged to the lower crossbeam of the main trolley traveling frame via two load-sharing mechanisms, the upper balance beam 27 and the lower balance beam 28. This structure ensures that each traveling wheel 20 experiences uniform force. Since the uniform force on each traveling trolley wheel is transmitted from the lower balance beam 28, and the force on the lower balance beam 28 evenly distributes the weight of the entire spiral unloading equipment, as well as the force transmitted to the upper balance beam 27 through the four support flanges, each trolley assembly 30 of the main trolley is driven by a separate drive unit 29. The motor, via a reducer, drives the traveling wheels 20 on the trolley, thus enabling the spiral unloading equipment to travel.

[0090] The unloading structure is fixedly installed on the traveling support. The unloading structure includes a vibrating unloader 22 and a conveyor belt 21. The vibrating unloader 22 is installed around the lower end of the conveying channel. The material channel of the vibrating unloader 22 is connected to the conveying channel. The discharge port of the vibrating unloader 22 is located above the conveyor belt 21.

[0091] The operation mode (some steps are adjustable) and material flow path of this intelligent bulk grain screw unloader are as follows: Before the dry bulk cargo ship enters the dock, the screw elevator is raised (a pitching mechanism can be set up to drive it). After the dry bulk cargo ship enters the dock, the screw elevator with the corresponding pitch is selected to lift the material. The pitching mechanism lowers the screw elevator into the hold, and after the screw feeding structure is in the working position, the screw feeding structure is started. The screw elevator is started, and the hydraulic cylinder lowers the pitching mechanism to bury the screw feeding structure in the material, starting the unloading operation. The material in the hold is fed into the inlet of the screw feeding structure. During the feeding process, the movement of the trolley traveling structure, the turntable rotation structure, and the pitching structure allows the screw feeding structure to reach most of the hold, ensuring that the material is continuously and efficiently transported within the screw unloader conveying system with high unloading efficiency. The material inside the ship's hold enters the feed inlet of the screw conveyor under the action of the screw feeding structure. The grain particles are vertically lifted by the screw conveyor to the horizontal (small angle) belt conveyor structure. They reach the tail end of the belt conveyor structure through the inertial separation bend at the discharge port of the screw conveyor. In the belt conveyor structure, they are transported to the other end of the device. Through the inertial separation bend at the discharge port of this end, the transport direction is changed to vertically downward. The grain particles enter the vibrating grain unloader below the rotating structure of the unloader through the unloading hopper. The grain particles passed through the vibrating grain unloader are transported by the rear conveyor belt to the transport trucks that are transported along the shore.

[0092] The present invention also provides a control method for an intelligent bulk grain screw unloading device, comprising:

[0093] Obtain the types of materials;

[0094] By comparing the material type with the preset material type-pitch relationship diagram, the pitch of the corresponding material type is determined.

[0095] The turntable in the vertical screw conveyor structure is controlled by the screw pitch to rotate the vertical screw conveyor with the screw pitch onto the material conveying path;

[0096] The hydraulic cylinder that controls the pitch structure drives the pitch structure to tilt, thereby moving the vertical spiral lifting structure up or down to the target position.

[0097] The screw feeding structure is controlled to screw material into the bin and discharge it.

[0098] Control the rotation of the slewing structure to drive the pitching structure, vertical spiral lifting structure, and belt conveyor structure to rotate on the horizontal plane;

[0099] The driver controls the traveling support, which in turn moves the traveling support, driving the rotation structure, pitch structure, vertical spiral lifting structure, and belt conveyor structure to move.

[0100] The intelligent bulk grain screw unloading equipment features a material type input structure (e.g., handwriting screen, material type selection button). The controller sends a control signal (rotation angle) to the turntable drive motor based on the material type. After the vertical screw conveyor rotates to the target position, if a position fixing device is installed, the controller drives the device to position the vertical screw conveyor, preventing displacement during material lifting. The controller drives the pitching mechanism to tilt upwards. Once the ship enters the unloading position, the controller drives the pitching mechanism to tilt downwards, allowing the screw feeding structure to penetrate deeper into the ship's hold and initiating unloading. After unloading at a certain position is completed, the controller controls the slewing structure to rotate and unload at the next position. Alternatively, the controller can control the traveling structure to move to the next unloading position.

[0101] This control method integrates the coordinated action of all components of the screw unloader, improving the unloading efficiency and stability of different types of materials.

[0102] Furthermore, those skilled in the art should understand that in the application documents of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0103] Numerous specific details are set forth in the specification of embodiments of the present invention. However, it should be understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Similarly, it should be understood that the description of exemplary embodiments of the present invention above is intended to simplify the disclosure of embodiments of the present invention and aid in the understanding of one or more aspects of the invention.

[0104] However, this disclosed approach should not be interpreted as reflecting an intention that the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as reflected in the claims, the inventive aspect lies in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent bulk grain screw unloading device, characterized in that, include: The material is fed in sequence by a spiral feeding structure, a vertical spiral lifting structure with adjustable pitch, a belt conveyor structure, a rotary structure, and an unloading structure. The vertical spiral lifting structure includes: a turntable disposed within its housing and two or more vertical spiral elevators. All vertical spiral elevators are arranged in parallel and fixedly connected to the turntable. Under the action of a drive motor, the turntable rotates, causing the vertical spiral elevators to rotate and thus guiding the elevators matched to the material type onto the material conveying path. The pitches of any two vertical spiral elevators are different. The drive motor is signal-connected to a controller. The control method of the controller includes: acquiring the material type; determining the pitch corresponding to the material type by comparing the material type with a preset material type-pitch relationship diagram; and controlling the turntable in the vertical screw conveyor structure according to the pitch to rotate the vertical screw conveyor with the pitch onto the material conveying path.

2. The intelligent bulk grain screw unloading equipment according to claim 1, characterized in that, The feed inlet of the vertical screw conveyor on the material conveying path is connected to the discharge outlet of the screw feeding structure, and the discharge outlet is connected to the first separation bend. The belt conveyor structure is located on the material falling path of the first separation bend.

3. The intelligent bulk grain screw unloading equipment according to claim 1, characterized in that, The turntable includes an upper turntable and a lower turntable. The upper turntable and the lower turntable are provided with vertically opposite connection positions to fix the vertical spiral elevator. The upper turntable and the lower turntable rotate synchronously under the action of the drive motor.

4. The intelligent bulk grain screw unloading equipment according to claim 1, characterized in that, The vertical spiral elevator includes a pipe body and a main shaft disposed within the pipe body, wherein spiral blades or a spiral conveyor belt are mounted on the main shaft.

5. The unloading equipment according to claim 1, characterized in that, The rotary structure includes: a lower support, a rotary support, and an upper support arranged sequentially from bottom to top. The rotary support is configured with a drive structure that rotates around its longitudinal central axis. The drive structure includes: a drive motor, an output shaft, and a pinion gear disposed at the output end of the output shaft. The pinion gear meshes with the vertical rack of the upper support. The drive motor is fixedly mounted on the lower support.

6. The intelligent bulk grain screw unloading equipment according to claim 1, characterized in that, Also includes: The traveling support includes: a base frame, with traveling wheels at the bottom and a conveying channel at the top; the rotating structure is fixedly installed on the edge of the conveying channel, and the upper part of the conveying channel is connected to the material channel of the rotating structure; the lower part of the conveying channel is connected to the unloading structure.

7. The intelligent bulk grain screw unloading equipment according to claim 6, characterized in that, The unloading structure is fixedly installed on the traveling support. The unloading structure includes a vibrating unloader and a conveyor belt. The vibrating unloader is installed around the lower end of the conveying channel. The material channel of the vibrating unloader is connected to the conveying channel. The discharge port of the vibrating unloader is located above the conveyor belt.

8. The intelligent bulk grain screw unloading equipment according to any one of claims 1-7, characterized in that, Also includes: A pitch structure, wherein the pitch structure is rotatably mounted on the rotary structure; The upper end of the shell of the vertical spiral lifting structure is rotatably mounted on one end of the pitching structure. The belt conveyor structure is movably installed on the pitching structure.

9. The intelligent bulk grain screw unloading equipment according to claim 8, characterized in that, The pitching structure includes a tripod and a hydraulic cylinder. The fixed end of the hydraulic cylinder is rotatably connected to the rotary structure, and the pushing end is rotatably connected to the bottom edge of the tripod. One bottom corner of the tripod is rotatably connected to the vertical spiral lifting structure, and the other bottom corner is fixedly fitted with a counterweight. The belt conveyor structure is rotatably mounted on the bottom edge of the tripod. And / or, The belt conveyor structure includes: an outer cover support and a belt conveyor assembly disposed on the outer cover support.

10. A control method for an intelligent bulk grain spiral unloading equipment as described in any one of claims 1-9, characterized in that, include: Obtain the types of materials; The pitch corresponding to the material type is determined by comparing the material type with a preset material type-pitch relationship diagram. The turntable in the vertical screw lifting structure, controlled by the screw pitch, is rotated onto the material conveying path. The hydraulic cylinder that controls the pitch structure drives the pitch structure to tilt, thereby moving the vertical spiral lifting structure up or down to the target position. The screw feeding structure is controlled to screw material into the bin and discharge it. Control the rotation of the rotary structure to drive the pitching structure, the vertical spiral lifting structure, and the belt conveyor structure to rotate on the horizontal plane; The driver controls the traveling support, which in turn moves the traveling support, driving the rotation structure, pitch structure, vertical spiral lifting structure, and belt conveyor structure to move.

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