Bulk material conveyor feed port cover opening and closing device and system and control method using the same

Abstract

The present invention proposes a bulk material conveyor feed port cover opening and closing device for pushing and pulling to open or close at least one bulk material conveyor feed port cover, comprising a bracket and at least one set of cover plate driving devices installed on the bracket; the cover plate driving device comprises a rotary driving mechanism, a screw, at least one transmission assembly, a guide rod, at least one swinging member, a shift fork member and at least one lifting lever ramp member; a port bulk material unloading and conveying system is also proposed, comprising a bulk material unloader, the bulk material conveyor feed port cover opening and closing device as described above, multiple bulk material conveyor feed port covers, multiple cover plate movable guide mechanisms corresponding one-to-one to the bulk material conveyor feed port covers, a bulk material conveyor and a controller; a control method applied to the port bulk material unloading and conveying system as described above is also proposed; a control method applied to the bulk material conveyor feed port cover plate opening and closing device as described above is also proposed; the present invention can enable the bulk material unloader to automatically open and close the cover plate of the feed port of the bulk material conveyor.

Description

Technical Field

[0001] The present invention relates to the technical field of bulk material conveyor ancillary equipment and port ship loading and unloading machinery, and in particular to bulk material conveyor feed port cover plate opening and closing equipment and a system and a control method using the same. Background Art

[0002] The standardized operation of bulk grain transportation at ports involves the following specific steps: unloading bulk grain using a general-purpose bulk ship unloader; transferring the unloaded bulk grain to a warehouse or transport vehicle using belt conveyors or other equipment; storage management of the bulk grain in a warehouse or yard; and loading the bulk grain into transport equipment via belt conveyors and ship loaders upon exit. Each step can be monitored, scheduled, and managed. The standardized operation of bulk grain transportation at ports is a systematic project involving mechanization, automation, and information technology. By optimizing operational processes, it improves port bulk grain transportation efficiency and reduces costs, meeting the large-scale, rapid turnover requirements of modern ports.

[0003] Currently, most bulk grain handling systems at terminals utilize enclosed belt conveyors for bulk grain transfer, and the enclosed belt conveyor inlet covers typically utilize push-pull design. When the bulk material ship unloader's discharge port needs to be docked or undocking with the enclosed belt conveyor's feed port, the inlet cover must be manually opened or closed, and the bulk material ship unloader operator manually docks or undocking the bulk material ship unloader's feed port with the enclosed belt conveyor's feed port.

[0004] The above-mentioned manual operation process used to open and close the closed conveyor feed port cover has the following problems: First, the coordination and communication and manual operation efficiency are low; the bulk material unloader operator communicates with the central control, and the material port needs to be docked. The worker moves the ladder to reach the designated closed belt conveyor feed port, climbs onto the closed belt conveyor box by climbing the ladder, manually opens the cover, and the operator operates the lowering of the bulk material unloader to dock with the closed conveyor feed port, and finally communicates with the worker to confirm that the docking is completed; second, manual operation has the risk of falling from heights, injuries, and cross-operation of humans and machines. When workers climb ladders and stand on the closed belt conveyor box, they are at risk of falling from heights and getting injured. At the same time, they are in the operating area of ​​the bulk material unloader, and there are safety risks such as cross-operation collision between humans and machines and electric shock. Third, the efficiency of manual operation is greatly affected by environmental factors and human physiological factors. The labor intensity of workers is high. The bulk material unloader needs to adjust its position according to the actual production situation on site. The time and frequency of docking or separation of the bulk material unloader's discharge port and the closed conveyor feed port are uncertain. At night, affected by natural factors such as light and temperature and the physiological factors of workers, the workers' operating efficiency drops significantly.

[0005] Chinese patent application document with application number 202410919541.8 discloses a leak-proof self-locking pneumatic gate, including a gate frame, a cylinder, a first spring, a locking mechanism, a second spring and a reset mechanism; if the leak-proof self-locking pneumatic gate is applied to a closed bulk material conveyor with multiple feed ports, it is necessary to arrange multiple leak-proof self-locking pneumatic gates corresponding to the feed ports one by one, which not only increases the cost investment in electromechanical equipment, but also increases the maintenance investment in multiple gate devices. Summary of the Invention

[0006] In view of this, it is necessary to propose a bulk material conveyor feed port cover opening and closing device and a system and control method using the same to address the above-mentioned problems, so as to overcome several shortcomings in the above-mentioned background technology and solve the following technical problems: how to automatically open and close the bulk material conveyor feed port cover at the corresponding position through a bulk material unloader, thereby economically improving the reliability of the port bulk material unloading and conveying system with multiple bulk material conveyor feed port covers.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides a bulk material conveyor feed port cover opening and closing device for pushing and pulling to open or close at least one bulk material conveyor feed port cover. The device is mounted on a bulk material ship unloader and includes a bracket and at least one cover plate driving device mounted on the bracket; the cover plate driving device includes a rotary drive mechanism, a screw, at least one transmission assembly, a guide rod, at least one swinging member, a shift fork member, and at least one lifting lever ramp member.

[0009] The rotation drive mechanism is mounted on the bracket, and is used to drive the screw to rotate around its own virtual axis;

[0010] The screw rod is rotatably connected to the bracket, and the screw rod is spaced and parallel to the guide rod; the screw rod is used to pull the transmission assembly, so that the transmission assembly moves horizontally left and right along the length direction of the screw rod;

[0011] The transmission assembly is used to push the swinging member, thereby causing the swinging member to move horizontally left and right along the length direction of the guide rod; one side of the transmission assembly is provided with a force transmission structure for pushing the swinging member, and the force transmission structure is in detachable contact with the swinging member; the other side of the transmission assembly is provided with a second connecting hole, which is engaged with the screw rod;

[0012] The guide rod is mounted on the bracket and serves as a guide rod for the swing member to move horizontally left and right;

[0013] The swing member is provided with a third connecting hole, which is movably sleeved on the guide rod; when a part of the swing member is pressed by the inclined surface of the lifting lever ramp member, the part of the swing member and the other part of the swing member both swing around the virtual axis of the guide rod, thereby causing the push cover plate portion of the fork member to move away from the bulk material conveyor feed port cover plate;

[0014] The fork member is fixedly connected to the other part of the swing member, and the fork member is used to push the bulk material conveyor feed port cover plate to move horizontally, thereby realizing the opening and closing of the bulk material conveyor feed port;

[0015] The lifting bar ramp is fixedly mounted on the bracket.

[0016] Further, the part of the swing member is one side of the swing member; the other part of the swing member is the other side of the swing member;

[0017] The swing member as a whole includes: a first swing arm portion, a fulcrum portion, and a second swing arm portion in sequence; a portion of the swing member is the first swing arm portion; another portion of the swing member is the second swing arm portion; a third connecting hole is provided through the fulcrum portion;

[0018] The first swing arm part is close to one longitudinal side of the guide rod, and the second swing arm part is close to the other longitudinal side of the guide rod; when the first swing arm part moves to the side of the lifting lever ramp and is pressed down by the inclined surface of the lifting lever ramp, the first swing arm part swings downward around the virtual axis of the guide rod and the second swing arm part tilts upward around the virtual axis of the guide rod, thereby making the push cover plate part of the fork part move away from the feed port cover plate of the bulk material conveyor.

[0019] Furthermore, the fulcrum portion is provided with an annular groove around its own virtual central axis; the force transmission structure is a bayonet structure, and the force transmission structure is snapped into the annular groove.

[0020] Furthermore, the first swing arm portion is located below the screw rod;

[0021] The main body of the fulcrum part is cylindrical.

[0022] Furthermore, the first swing arm portion is provided with a pulley for reducing the friction force generated on the inclined surface of the lifting lever ramp member; the lifting lever ramp member includes a flat plate and an inclined plate connected in sequence at obtuse angles; the bottom surface of the inclined plate is the inclined surface of the lifting lever ramp member; when the pulley contacts the bottom surface of the flat plate, the fork member is tilted to the highest position, so that the fork member is away from the feed port cover of the bulk material conveyor.

[0023] Furthermore, the arrangement directions of the screw rod and the guide rod are parallel to the moving direction of the bulk material conveyor feed port cover;

[0024] The installation height of the screw rod on the bracket is higher than the installation height of the guide rod.

[0025] Furthermore, the number of the transmission components, swing parts, and lifting lever ramp parts is two; wherein the first transmission component cooperates with the first swing part so that the first swing part pushes the fork part; wherein the second transmission component cooperates with the second swing part so that the second swing part pushes the fork part; the first transmission component and the second transmission component are arranged at intervals on the screw rod; the swing part and the lifting lever ramp part cooperate one-to-one when they contact each other.

[0026] Furthermore, the device also includes at least two limit switches installed on the bracket; one of the limit switches is used to limit the lateral movement of the first transmission component on the screw rod beyond a left limit position, and the other limit switch is used to limit the lateral movement of the second transmission component on the screw rod beyond a right limit position.

[0027] Furthermore, the number of the cover plate driving devices is two; the first cover plate driving device is located on the longitudinal front side of the bracket, the second cover plate driving device is located on the longitudinal rear side of the bracket, and the first cover plate driving device and the second cover plate driving device are arranged at intervals; the transverse virtual center line of the bulk material conveyor feed port cover is located between the first cover plate driving device and the second cover plate driving device.

[0028] The present invention further proposes a bulk material unloading and conveying system at a port, comprising a bulk material unloader provided with a material discharge port, a bulk material conveyor feed port cover plate opening and closing device as described in any one of the above items, a plurality of bulk material conveyor feed port cover plates, a plurality of cover plate movable guide mechanisms corresponding one-to-one to the bulk material conveyor feed port cover plates, at least one bulk material conveyor, and a controller; the bulk material conveyor is a belt conveyor;

[0029] The bulk material unloader is used to move laterally in the port and unload bulk material to a designated bulk material conveyor feed port located above the bulk material conveyor;

[0030] The bulk material conveyor feed port cover plate opening and closing device is installed next to the discharge port of the bulk material ship unloader, and is used to open and close multiple bulk material conveyor feed port covers within the lateral movement range of the bulk material ship unloader in the port;

[0031] The bulk material conveyor feed inlet cover plate is used to be pushed and pulled by the bulk material conveyor feed inlet cover plate opening and closing device to open and close the bulk material conveyor feed inlet;

[0032] The cover plate movable guide mechanism is installed above the bulk material conveyor and is used for movably installing the bulk material conveyor feed port cover plate;

[0033] The bulk material conveyor is used to transport bulk materials dropped from the feed port of the bulk material conveyor;

[0034] The controller is used to control the action of the rotation drive mechanism.

[0035] The present invention further proposes a control method for the bulk material unloading and conveying system at a port as described above, which is characterized by comprising the following steps:

[0036] Step S1, controlling the bulk material ship unloader to move so that the discharge port of the bulk material ship unloader is located above the feed port of the designated bulk material conveyor; then executing step S2;

[0037] Step S2, controlling the rotary drive mechanism to drive the screw to rotate in a positive direction around its own virtual axis, and the transmission assembly cooperates with the swing member to cause the fork member to push open the bulk material conveyor feed port cover, thereby opening the bulk material conveyor feed port; then executing step S3;

[0038] Step S3, the transmission assembly moves to a limit position; then executes step S4;

[0039] Step S4, the discharge port of the bulk material ship unloader is lowered until the discharge port of the bulk material ship unloader is docked with the feed port of the bulk material conveyor; then step S5 is executed;

[0040] Step S5: The bulk material unloader starts discharging from the discharge port, and the bulk material falls onto the bulk material conveyor through the feed port of the bulk material conveyor; then step S6 is executed;

[0041] Step S6, the bulk material unloader stops discharging material; then executes step S7;

[0042] Step S7, the discharge port of the bulk material ship unloader rises until the discharge port of the bulk material ship unloader is separated from the feed port of the bulk material conveyor; then step S8 is executed;

[0043] Step S8, controlling the rotary drive mechanism to drive the screw to rotate in the opposite direction around its own virtual axis, and the transmission assembly cooperates with the swing member to cause the fork member to push the bulk material conveyor feed port cover plate, thereby closing the bulk material conveyor feed port; then executing step S9;

[0044] Step S9, the transmission assembly moves to another limit position; then step S10 is executed;

[0045] Step S10, controlling the bulk material ship unloader to move so that the discharge port of the bulk material ship unloader is located above the feed port of the next designated bulk material conveyor, and then repeating step S2.

[0046] The present invention further proposes a control method for the bulk material conveyor feed port cover opening and closing device as described above, comprising the following steps:

[0047] Step S100, controlling the rotary drive mechanism to drive the screw to rotate in a positive direction around its own virtual axis, and the transmission assembly cooperates with the swing member to cause the fork member to push open the bulk material conveyor feed port cover, thereby opening the bulk material conveyor feed port; then executing step S200;

[0048] Step S200, controlling the rotary drive mechanism to drive the screw to rotate in the reverse direction around its own virtual axis, and the transmission assembly cooperates with the swing member to make the fork member push the bulk material conveyor feed port cover, thereby closing the bulk material conveyor feed port.

[0049] The beneficial effects of the present invention are:

[0050] The present invention can automatically open and close the bulk material conveyor feed port cover at the corresponding position through the bulk material unloader, and can also improve the reliability and economy of the port bulk material unloading and conveying system with multiple bulk material conveyor feed port covers; the present invention reduces manual intervention and improves operation efficiency, laying a foundation for efficient operation for realizing fully automated operation of the bulk material unloader, and also saves manpower and reduces safety risks, which can significantly reduce the need for manual operation during the unloading operation, thereby effectively reducing the risk of safety accidents caused by improper human operation; the present invention also improves the efficiency of material port docking or separation, can realize fast and accurate material port docking and separation, improves the efficiency of the entire unloading process, and provides strong support for the fully automatic process operation of bulk materials / grain; the present invention also has the advantages of simple structure, strong reliability, adaptability to narrow spaces, and little modification to the original bulk material unloader of the port. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a schematic diagram of the three-dimensional structure of a bulk material conveyor feed port cover opening and closing device in Example 1 of the present invention;

[0052] Figure 2 This is a schematic diagram of the three-dimensional structure of a bulk material conveyor feed port cover opening and closing device in Example 2 of the present invention;

[0053] Figure 3 This is a schematic diagram of the three-dimensional structure of a bulk material conveyor feed port cover opening and closing device in Example 3 of the present invention;

[0054] Figure 4 It is a cross-sectional view of a bulk material unloading and conveying system for a port according to the present invention;

[0055] Figure 5 This is a schematic diagram of the three-dimensional structure of the transmission assembly involved in the present invention;

[0056] Figure 6 It is a schematic diagram of the three-dimensional structure of the lifting bar ramp member involved in the present invention;

[0057] Figure 7 This is a schematic diagram of the three-dimensional structure of the swing member involved in the present invention;

[0058] Figure 8 This is a schematic diagram of the structural principle of a bulk material unloading and conveying system for a port according to the present invention, viewed from above;

[0059] Description of reference numerals:

[0060] Bracket 10; bulk material unloader 100; bulk material conveyor feed port cover 200; cover drive device 300; rotary drive mechanism 1; screw 2; transmission assembly 3; force transmission structure 31; second connecting hole 32; screw nut 33; guide rod 4; swing member 5; first swing arm portion 51; fulcrum portion 52; third connecting hole 521; annular groove 522; second swing arm portion 53; pulley 511; fork member 6; lifting lever ramp member 7; travel switch 8; cover movable guide mechanism 500; feed port 400; bulk material conveyor 600; flat plate 71; inclined plate 72; reinforcing rod 9. DETAILED DESCRIPTION

[0061] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further clearly and completely described below in conjunction with the embodiments of the present invention. It should be noted that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0062] It should be understood that the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0063] Terms such as "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, the definition of "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of such features.

[0064] Example 1

[0065] like Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 As shown:

[0066] This embodiment provides a bulk material conveyor feed port cover opening and closing device for pushing and pulling open or close at least one bulk material conveyor feed port cover 200. The device is mounted on a bulk material ship unloader 100 and includes a bracket 10 and at least one cover drive device 300 mounted on the bracket 10. The cover drive device 300 includes a rotary drive mechanism 1, a screw 2, at least one transmission assembly 3, a guide rod 4, at least one swinging member 5, a shift fork member 6, and at least one lifting lever ramp member 7.

[0067] The rotation drive mechanism 1 is mounted on the bracket 10 and is used to drive the screw 2 to rotate around its own virtual axis;

[0068] The screw rod 2 is rotatably connected to the bracket 10, and the screw rod 2 is spaced and parallel to the guide rod 4; the screw rod 2 is used to pull the transmission assembly 3, so that the transmission assembly 3 moves horizontally left and right along the length direction of the screw rod 2;

[0069] The transmission assembly 3 is used to push the swinging member 5, thereby causing the swinging member 5 to move horizontally left and right along the length direction of the guide rod 4; a force transmission structure 31 for pushing the swinging member 5 is provided on one side of the transmission assembly 3, and the force transmission structure 31 is in detachable contact with the swinging member 5; a second connecting hole 32 is provided through the other side of the transmission assembly 3, and the second connecting hole 32 is engaged with the screw rod 2;

[0070] The guide rod 4 is mounted on the bracket 10 and serves as a guide rod for the swing member 5 to move horizontally left and right;

[0071] The swing member 5 is provided with a third connecting hole 521, which is movably sleeved on the guide rod 4. When a portion of the swing member 5 is pressed by the inclined surface of the lifting lever ramp member 7, the portion of the swing member 5 and the other portion of the swing member 5 both swing around the virtual axis of the guide rod 4, thereby causing the push cover plate portion of the fork member 6 to move away from the bulk material conveyor feed port cover plate 200.

[0072] The fork member 6 is fixedly connected to the other part of the swing member 5, and the fork member 6 is used to push the bulk material conveyor feed port cover 200 to move horizontally, thereby realizing the opening and closing of the bulk material conveyor 600 feed port 400;

[0073] The lifting lever ramp member 7 is fixedly mounted on the bracket 10; the lifting lever ramp member 7 is used to press a portion of the swinging member 5 during the process of the push cover plate portion of the fork member 6 swinging upward away from the bulk material conveyor feed port cover plate 200.

[0074] Example 2

[0075] Example 2 is a further optimized design of Example 1;

[0076] like Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 As shown:

[0077] The force transmission structure 31 is a perforated plate structure, a bayonet structure or a bayonet protrusion structure;

[0078] When the force transmission structure 31 is a perforated plate structure, the force transmission structure 31 is a perforated plate with a first connecting hole, the guide rod 4 passes through the first connecting hole, and a transverse end surface of the force transmission structure 31 is detachably abutted against the swinging member 5;

[0079] When the force transmission structure 31 is a bayonet structure, the bayonet structure is in the shape of a tiger's mouth, and two protrusions are provided on both sides of the bayonet structure (such as Figure 5 As shown), a transverse end surface of the force transmission structure 31 is detachably abutted against the swing member 5;

[0080] When the force transmission structure 31 is a clamping plate protrusion structure, the force transmission structure 31 is a protrusion protruding from one side of the transmission assembly 3 , and a transverse end surface of the force transmission structure 31 is detachably abutted against the swinging member 5 .

[0081] Example 3

[0082] Example 3 is a further optimized design of Example 1;

[0083] The part of the swing member 5 is one side of the swing member 5 ; the other part of the swing member 5 is the other side of the swing member 5 .

[0084] Optimally, the swing member 5 as a whole sequentially includes: a first swing arm portion 51, a fulcrum portion 52, and a second swing arm portion 53; a portion of the swing member 5 is the first swing arm portion 51; another portion of the swing member 5 is the second swing arm portion 53; a third connecting hole 521 is provided through the fulcrum portion 52;

[0085] The first swing arm part 51 is close to one longitudinal side of the guide rod 4, and the second swing arm part 53 is close to the other longitudinal side of the guide rod 4; when the first swing arm part 51 moves to the side of the lifting bar ramp part 7 and is pressed down by the inclined surface of the lifting bar ramp part 7, the first swing arm part 51 swings downward around the virtual axis of the guide rod 4 and the second swing arm part 53 tilts upward around the virtual axis of the guide rod 4, thereby making the push cover plate part of the fork part 6 move away from the bulk material conveyor feed port cover plate 200.

[0086] Optimally, the fulcrum portion 52 is provided with an annular groove 522 around its own virtual central axis; the force transmission structure 31 is a bayonet structure, and the force transmission structure 31 is snapped into the annular groove 522 .

[0087] Optimally, the first swing arm portion 51 is located below the screw rod 2 .

[0088] Optimally, the main body of the fulcrum portion 52 is cylindrical.

[0089] Optimally, the first swing arm portion 51 is provided with a pulley 511 for reducing the friction force generated on the inclined surface of the lifting lever ramp member 7; the lifting lever ramp member 7 includes a flat plate 71 and an inclined plate 72 connected in sequence at obtuse angles; the bottom surface of the inclined plate 72 is the inclined surface of the lifting lever ramp member 7; when the pulley 511 contacts the bottom surface of the flat plate 71, the fork member 6 is tilted to the highest position, so that the fork member 6 is away from the feed port cover 200 of the bulk material conveyor.

[0090] Optimally, the screw rod 2 and the guide rod 4 are arranged in directions parallel to the moving direction of the bulk material conveyor feed port cover 200 .

[0091] Optimally, the installation height of the threaded rod 2 on the bracket 10 is higher than the installation height of the guide rod 4 .

[0092] Further optimized, the transmission assembly 3 includes a sleeve double-rod plate component and a screw nut 33; the force transmission structure 31 is arranged on the lower half of the sleeve double-rod plate component; the upper half of the sleeve double-rod plate component is fixedly connected to the screw nut 33, and the second connecting hole 32 passes through the upper half of the sleeve double-rod plate component and the screw nut 33.

[0093] Further optimized, one rotating end of the screw rod 2 is pivotally connected or bearing-connected to the bracket 10 .

[0094] Further optimized, the fork member 6 is used to push the bulk material conveyor feed port cover plate 200 to slide horizontally in a track-like manner, thereby realizing the opening and closing of the bulk material conveyor feed port.

[0095] Further optimized, the end face of the pulley 511 is perpendicular to the inclined surface of the lifting lever ramp 7.

[0096] Example 4

[0097] Example 4 is an optimized design of any one of the technical solutions in Example 1, Example 2 or Example 3;

[0098] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 As shown:

[0099] The number of the transmission components 3, the swinging parts 5, and the lifting lever ramp parts 7 are all two; the first transmission component cooperates with the first swinging part so that the first swinging part pushes the fork part 6; the second transmission component cooperates with the second swinging part so that the second swinging part pushes the fork part 6; the first transmission component and the second transmission component are arranged at intervals on the screw rod 2; the swinging part 5 and the lifting lever ramp part 7 cooperate one-to-one when they contact each other.

[0100] Optimally, the device also includes at least two limit switches 8 mounted on the bracket; one of the limit switches 8 is used to limit the lateral movement of the first transmission component on the screw rod 2 beyond a left limit position, and the other limit switch 8 is used to limit the lateral movement of the second transmission component on the screw rod 2 beyond a right limit position.

[0101] For further optimization, the first swinging member and the second swinging member are fixedly connected via two ends of a reinforcing rod 9 .

[0102] Example 5

[0103] Example 5 is an optimized design of any one of the technical solutions in Example 1, Example 2, Example 3 or Example 4. Figure 1-Figure 7 As shown:

[0104] There are two cover plate drive devices 300; the first cover plate drive device is located on the longitudinal front side of the bracket 10, and the second cover plate drive device is located on the longitudinal rear side of the bracket 10, and the first cover plate drive device and the second cover plate drive device are arranged at intervals; the transverse virtual center line of the bulk material conveyor feed port cover 200 is located between the first cover plate drive device and the second cover plate drive device.

[0105] Example 6

[0106] Example 6 is an optimized design of any one of the technical solutions in Example 1, Example 2, Example 3, Example 4 or Example 5;

[0107] like Figures 1-8 As shown:

[0108] This embodiment provides a bulk material unloading and conveying system for a port, comprising a bulk material unloader 100 having a material discharge port, a bulk material conveyor feed port cover plate opening and closing device as described above, a plurality of bulk material conveyor feed port cover plates 200, a plurality of cover plate movable guide mechanisms 500 corresponding one-to-one to the bulk material conveyor feed port cover plates 200, at least one bulk material conveyor 600, and a controller; the bulk material conveyor 600 is a belt conveyor;

[0109] The bulk material unloader 100 is used to move laterally in the port and unload bulk material to a designated feed port 400 of the bulk material conveyor 600 located above the bulk material conveyor 600;

[0110] The bulk material conveyor feed port cover plate opening and closing device is installed next to the discharge port of the bulk material ship unloader 100 and is used to open and close multiple bulk material conveyor feed port covers 200 within the lateral movement range of the bulk material ship unloader 100 in the port;

[0111] The bulk material conveyor feed port cover plate 200 is used to be pushed and pulled by the bulk material conveyor feed port cover plate opening and closing device to open and close the feed port 400 of the bulk material conveyor 600;

[0112] The cover plate movable guide mechanism 500 is installed above the bulk material conveyor 600 and is used to movably install the bulk material conveyor feed port cover plate 200;

[0113] The bulk material conveyor 600 is used to transport bulk materials dropped from the feed port 400 of the bulk material conveyor 600;

[0114] The controller is used to control the action of the rotation drive mechanism 1 .

[0115] This embodiment further proposes a control method for the bulk material unloading and conveying system at a port as described above, comprising the following steps:

[0116] Step S1, controlling the bulk material ship unloader 100 to move so that the discharge port of the bulk material ship unloader 100 is located above the designated feed port 400 of the bulk material conveyor 600; then executing step S2;

[0117] Step S2: Control the rotary drive mechanism 1 to drive the screw 2 to rotate in the forward direction around its own virtual axis. The transmission assembly 3 cooperates with the swing member 5 to cause the fork member 6 to push open the bulk material conveyor feed port cover 200, thereby opening the bulk material conveyor 600 feed port 400. Then, execute step S3.

[0118] Step S3, the transmission assembly 3 moves to a limit position; then executes step S4;

[0119] Step S4: the material discharge port of the bulk material ship unloader 100 is lowered until the material discharge port of the bulk material ship unloader 100 is docked with the material feed port 400 of the bulk material conveyor 600; then step S5 is executed;

[0120] Step S5: the discharge port of the bulk material unloader 100 starts discharging the bulk material, and the bulk material passes through the feed port 400 of the bulk material conveyor 600 and falls onto the bulk material conveyor 600; then step S6 is executed;

[0121] Step S6, the material discharge port of the bulk material unloader 100 stops discharging materials; then step S7 is executed;

[0122] Step S7: the material discharge port of the bulk material ship unloader 100 rises until the material discharge port of the bulk material ship unloader 100 is separated from the material feed port 400 of the bulk material conveyor 600; then step S8 is executed;

[0123] Step S8: Control the rotary drive mechanism 1 to drive the screw 2 to rotate in the opposite direction around its own virtual axis. The transmission assembly 3 cooperates with the swing member 5 to cause the fork member 6 to push the bulk material conveyor feed port cover 200, thereby closing the bulk material conveyor 600 feed port 400. Then, execute step S9.

[0124] Step S9, the transmission assembly 3 moves to another limit position; then step S10 is executed;

[0125] In step S10, the bulk material ship unloader 100 is controlled to move so that the discharge port of the bulk material ship unloader 100 is located above the feed port 400 of the next designated bulk material conveyor 600, and then step S2 is repeated.

[0126] Example 7

[0127] Example 7 is an optimized design of any one of the technical solutions in Example 1, Example 2, Example 3, Example 4 or Example 5;

[0128] like Figure 1-Figure 7 As shown:

[0129] This embodiment further proposes a control method for the bulk material conveyor feed port cover opening and closing device as described above, comprising the following steps:

[0130] In step S100, the rotary drive mechanism 1 is controlled to drive the screw 2 to rotate in a forward direction about its own virtual axis. The transmission assembly 3 cooperates with the swing member 5 to cause the fork member 6 to push open the bulk material conveyor feed port cover 200, thereby opening the bulk material conveyor 600 feed port 400. Then, step S200 is executed.

[0131] Step S200, control the rotary drive mechanism 1 to drive the screw 2 to rotate in the opposite direction around its own virtual axis, and the transmission assembly 3 cooperates with the swing member 5 to make the fork member 6 push the bulk material conveyor feed port cover 200, thereby closing the bulk material conveyor 600 feed port 400.

[0132] Example 8

[0133] Example 8 is an optimized design of any one of the technical solutions in Example 1, Example 2, Example 3, Example 4 or Example 5;

[0134] like Figures 1-8 As shown:

[0135] Specifically, the fork hook of the fork member 6 is fixed, but may also be adjustable, such as an adjustable screw, a telescopic tube, etc.

[0136] Specifically, the overall structure of the fork member 6 is fixed, but it can also be made adjustable, for example, the width of the front arm, the rear arm and the movable fork can be adjusted.

[0137] Specifically, the rotary drive mechanism 1 may be driven by a sprocket or a reducer.

[0138] Specifically, the rotation drive mechanism 1 is driven by a motor.

[0139] Specifically, the shift fork member 6 may also be an electromagnet, which can be energized to attract the cover plate (ie, the bulk material conveyor feed port cover plate 200) and move it, or move the cover plate and separate it when the power is off.

[0140] Specifically, the control circuit of the controller is a control loop of the series-connected bulk material unloader 100, which realizes the docking or separation of the blanking port of the bulk material unloader 100 with one button. It can also be a PLC output point for the bulk material unloader 100 to increase the docking or separation signal of the blanking port. The controller opens or closes the cover, and inputs the cover open position signal or the cover closed position signal into the PLC through the stroke limit feedback.

[0141] Specifically, the limit of the travel switch 8 plays a role of safety protection, and a motor encoder can also be installed to feedback and calculate the moving stroke to play a role of safety protection.

[0142] Specifically, the rotary drive mechanism 1 uses a single motor as a power source and a sprocket as a transmission drive screw, which has good balance and high stability.

[0143] Specifically, a sliding sleeve is provided on one side of the transmission assembly 3, and a transmission kit is provided on the other side of the transmission assembly 3 (preferably, the transmission kit includes a screw nut 33 and another sliding sleeve). The screw is connected through the transmission kit, and is connected to the guide rod 4 through the sliding sleeve. The screw 2 and the guide rod 4 form a double-rod structure; the fork member 6 uses the sliding sleeves of the two swinging members 5 as a hinge point, with a simple structure, high stability and good balance.

[0144] Specifically, the swinging member 5 and the fork member 6 cooperate with each other using the lever principle, with the sliding sleeve in the third connecting hole 521 as the fulcrum. Through the cooperation of the first swing arm part 51 and the lifting lever ramp member 7, the fork member 6 opens and closes the cover plate to adapt to the narrow space.

[0145] Specifically, the design of the shift fork member 6 cover plate moving the shift fork front arm lever can adapt to the situation where the feed port of the closed belt conveyor has height deviations or left and right deviations.

[0146] Specifically, the control circuit of the controller is connected in series to the material port docking or separation control circuit of the bulk material ship unloader 100, so as to realize the one-key material port docking or separation function.

[0147] Specifically, the rotary drive mechanism 1 uses a single motor as a power source and a sprocket as a transmission drive screw 2, which has good balance and high stability.

[0148] Optimally, a screw nut 33 is provided on the other side of the transmission assembly 3 , and the other side of the transmission assembly 3 is engaged and connected to the screw 2 through the screw nut 33 .

[0149] Specifically, at this time, the discharge port of the bulk material unloader 100 is directly above the feed port of the closed belt conveyor. The bulk material unloader 100 automatically opens and closes the bulk material conveyor feed port cover 200 through the bulk material conveyor feed port cover opening and closing device. The bracket 10 is installed on the steel beam above the discharge port of the bulk material unloader 100. The motor and reducer are installed in the middle position of the fixed frame beam. The reducer is installed on the reducer fixing seat. The reducer sprocket is connected to the screw sprocket with a chain. The rotating parts such as the chain, screw sprocket and reducer sprocket are installed with sprocket covers for protection. The screw seat is installed at both ends of the fixed frame beam. A guide rod 4, i.e., a sliding rod, is installed directly below the screw rod 2, and a screw nut 33 is installed on the screw rod 2. The screw nut 33 serves as a component of the other side of the transmission assembly 3. The screw nut 33 pushes one side of the transmission assembly 3. The sliding sleeve in the third connecting hole 521 serves as the fulcrum of the fork member 6. The two ends of the baffle rod of the fork member 6 are provided with a fork hook to move the cover plate; the lifting lever ramp member 7 can adopt a guide plate structure, and the lifting lever ramp member 7 is installed on the fixed frame end beam of the bracket 10. A closed position limit switch is set near one end of the screw rod 2, and an open position limit switch is set near the other end of the screw rod 2.

[0150] Specifically, the fixed frame is horizontally installed and fixed on the steel beam above the blanking port of the bulk material unloader 100, the fixed frame end beam is parallel to the push-pull direction of the bulk material conveyor feed port cover 200, the screw rod 2 and the guide rod 4, the fork member 6 are parallel to the fixed frame end beam of the bracket 10, and the reducer is installed in the middle of the fixed frame crossbeam, the motor and the reducer are connected, the motor and the reducer are on the open side of the bulk material conveyor feed port cover 200, the reducer sprocket and the screw rod sprocket are in the same vertical plane; the first swing arm part 51 and the second swing arm part 53 are both perpendicular to the direction of the guide rod 4.

[0151] Specifically, the discharge port of the bulk material unloader 100 does not interfere with the fixed frame crossbeam, and the bottom of the lifting lever ramp 7 is an end face that transitions from an inclined surface to a plane. When the pulley 511 slides from the inclined plate 72 end face of the lifting lever ramp 7 to the flat plate 71 end face of the lifting lever ramp 7, the fork member 6 uses the sliding sleeve of the fulcrum part 52 located in the third connecting hole 521 as the fulcrum, and the fork member 6 works as a lever to flip upward. When the limit switch is closed and the limit switch located in the transmission component 3 is closed, the fork member 6 is turned upward. After the screw nut 33 is touched and triggered, the fork member 6 is in a horizontal state; when the pulley 511 slides from the flat plate 71 end surface of the lifting lever ramp member 7 that it touches to the inclined plate 72 end surface of the lifting lever ramp member 7, the fork member 6 uses the sliding sleeve of the fulcrum part 52 located in the third connecting hole 521 as a fulcrum, and the fork member 6 works as a lever to flip downward until the fork member 6 touches the bulk material conveyor feed port cover 200 and stops flipping downward; when the fork member 6 moves in the direction of the screw sprocket (such as Figure 3 ) moves, the fork member 6 hooks (or presses or magnetically attracts) the bulk material conveyor feed port cover 200 and moves until the closed position limit switch touches and triggers the screw nut 33; the closed position limit switch and the open position limit switch are both normally open mechanical switches, that is, the travel switch 8.

[0152] The working process of the port bulk material unloading and conveying system of this embodiment is as follows:

[0153] The discharge port of the bulk material unloader 100 is directly above the feed port 400 of the bulk material conveyor 600. The initial position of the fork member 6 is the horizontal state mentioned above. When the motor of the rotary drive mechanism 1 is driven in the forward direction, the reducer sprocket drives the chain transmission screw sprocket, the screw 2 rotates, and the screw nut 33 on the screw 2 moves toward the screw sprocket. At the same time, the swing member 5 also moves synchronously along the guide rod 4. When the pulley 511 moves from the flat plate 71 end of the lifting lever ramp member 7 to the inclined plate 7 of the lifting lever ramp member 7, After the end face slides, the fork member 6 uses the sliding sleeve of the fulcrum portion 52 located at the third connecting hole 521 as a fulcrum, and the fork member 6 works as a lever to flip downward until the fork member 6 touches the bulk material conveyor feed inlet cover 200, stops flipping downward, and continues to move. The fork member 6 hooks the bulk material conveyor feed inlet cover 200 and moves until the closed position limit switch touches and triggers the screw nut 33, and then stops. When it stops, the bulk material conveyor feed inlet cover 200 is fully opened.

[0154] When the position motor of the rotary drive mechanism 1 is driven in reverse, the reducer sprocket drives the chain transmission screw sprocket, the screw 2 rotates, and the screw nut 33 moves in the opposite direction of the screw sprocket. At the same time, the swinging member 5 also moves synchronously along the guide rod 4, and the fork member 6 moves to the fork member 6 to hook the position of the bulk material conveyor feed port cover 200 and then continue to move. When the pulley 511 slides from the inclined plate 72 end surface of the lifting lever ramp member 7 that it touches to the flat plate 71 end surface of the lifting lever ramp member 7, the fork member 6 uses the sliding sleeve of the fulcrum part 52 located in the third connecting hole 521 as the fulcrum, and the fork member 6 acts as a lever to flip upward, and the fork member 6 is separated from the bulk material conveyor feed port cover 200, and the bulk material conveyor feed port cover 200 is completely closed and continues to move. When the closed limit switch is triggered by the contact of the screw nut 33, the fork member 6 returns to its initial horizontal state.

[0155] The control logic of the controller of the bulk material unloading and conveying system of the port is:

[0156] The control circuit of the controller is connected in series to the two-port docking or separation control circuit of the bulk material unloader 100, specifically: the driver's cab clicks the "bulk material unloader *# drop port down" icon on the industrial control touch screen, and the signal is transmitted to the PLC. The PLC outputs the "*# cover open" signal to control the normally open contact of the intermediate relay to close, and the forward contactor coil of the motor controlled by the relay is energized, the forward contactor of the motor is attracted, and the motor rotates forward, executing the above-mentioned bulk material conveyor feed port cover opening and closing device to open the bulk material conveyor feed port cover 200. After the open-in-place limit switch is triggered, the intermediate relay of the open-in-place feedback loop is energized, the normally open contact is closed, and the open-in-place signal is input to the PLC. The PLC outputs the "bulk material unloader *# blanking port descends" signal to control the blanking port of the bulk material unloader 100 to descend and dock with the feed port of the open and closed belt conveyor. The descending-in-place signal is triggered and fed back to the PLC. The PLC stops outputting the "bulk material unloader *# blanking port descends" signal, the blanking port of the bulk material unloader 100 stops descending, and the docking of the blanking ports of the bulk material unloader 100 is completed;

[0157] The driver's cab clicks the "Bulk Material Unloader *# Blanking Port Rising" icon on the industrial control touch screen, and the signal is transmitted to the PLC. The PLC outputs the "Bulk Material Unloader *# Blanking Port Rising" signal to control the bulk material unloader 100 to rise and separate from the feed port 400 of the bulk material conveyor 600. The rising position signal is triggered and fed back to the PLC. The PLC stops outputting the "Bulk Material Unloader *# Blanking Port Rising" signal, and the bulk material unloader 100 stops rising. At the same time, the PLC outputs the "*# Cover Close" signal to control the normally open contact of the intermediate relay to close, and the motor reversal contactor coil controlled by the relay is energized, the motor reversal contactor is energized, and the motor flips, executing the above-mentioned equipment work to close the bulk material conveyor feed port cover 200. After the closing position limit switch is triggered, the closing position feedback loop intermediate relay is energized, the normally open contact is energized, and the closing position signal is fed back to the PLC, and the separation of the bulk material unloader 100 is completed.

[0158] Optimally, the control circuit of the controller is connected in series to the control circuit for docking or separating the two ports of the bulk material unloader, and the interlocking protection of the stroke limit switch, the descent and rise of the drop port of the bulk material unloader 100 and the opening and closing of the feed port cover 200 of the bulk material conveyor is set in the control circuit and the program, thereby automatically realizing the function of docking or separating the material ports of the bulk material unloader 100 and the bulk material conveyor 600.

[0159] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A bulk material conveyor feed port cover opening and closing device, used for pushing and pulling to open or close at least one bulk material conveyor feed port cover (200), the device being installed on a bulk material ship unloader (100), characterized in that: The device comprises a bracket (10) and at least one set of cover plate driving devices (300) mounted on the bracket (10); the cover plate driving device (300) comprises a rotary driving mechanism (1), a screw rod (2), at least one transmission assembly (3), a guide rod (4), at least one swinging member (5), a shift fork member (6) and at least one lifting ramp member (7); The rotary drive mechanism (1) is mounted on a bracket (10), and the rotary drive mechanism (1) is used to drive the screw rod (2) to rotate around its own virtual axis; The screw rod (2) is rotatably connected to the bracket (10), and the screw rod (2) is spaced and parallel to the guide rod (4); the screw rod (2) is used to pull the transmission assembly (3), so that the transmission assembly (3) moves horizontally left and right along the length direction of the screw rod (2); The transmission assembly (3) is used to push the swinging member (5), thereby causing the swinging member (5) to move horizontally left and right along the length direction of the guide rod (4); a force transmission structure (31) for pushing the swinging member (5) is provided on one side of the transmission assembly (3), and the force transmission structure (31) and the swinging member (5) are in detachable contact; a second connecting hole (32) is provided through the other side of the transmission assembly (3), and the second connecting hole (32) is engaged and connected to the screw rod (2); The guide rod (4) is mounted on the bracket (10), and the guide rod (4) serves as a guide rod for the swing member (5) to move horizontally left and right; The swing member (5) is provided with a third connecting hole (521) extending therethrough, and the third connecting hole (521) is movably sleeved on the guide rod (4); when a portion of the swing member (5) is pressed by the inclined surface of the lifting lever ramp member (7), a portion of the swing member (5) and another portion of the swing member (5) both swing around the virtual axis of the guide rod (4), thereby causing the push cover plate portion of the fork member (6) to move away from the bulk material conveyor feed port cover plate (200); The shift fork member (6) is fixedly connected to another part of the swing member (5), and the shift fork member (6) is used to push the bulk material conveyor feed port cover plate (200) to move horizontally, thereby realizing the opening and closing of the bulk material conveyor (600) feed port (400); The lifting bar ramp (7) is fixedly mounted on the bracket (10); A portion of the swing member (5) is one side portion of the swing member (5); another portion of the swing member (5) is the other side portion of the swing member (5); The swing member (5) as a whole sequentially comprises: a first swing arm portion (51), a fulcrum portion (52) and a second swing arm portion (53); a portion of the swing member (5) is the first swing arm portion (51); another portion of the swing member (5) is the second swing arm portion (53); a third connecting hole (521) is provided through the fulcrum portion (52); The first swing arm portion (51) is close to one longitudinal side of the guide rod (4), and the second swing arm portion (53) is close to the other longitudinal side of the guide rod (4); when the first swing arm portion (51) moves to the side of the lifting lever ramp member (7) and is pressed down by the inclined surface of the lifting lever ramp member (7), the first swing arm portion (51) swings downward around the virtual axis of the guide rod (4) and the second swing arm portion (53) tilts upward around the virtual axis of the guide rod (4), thereby causing the push cover plate portion of the fork member (6) to move away from the bulk material conveyor feed port cover plate (200); The fulcrum portion (52) is provided with an annular groove (522) around its own virtual central axis; the force transmission structure (31) is a bayonet structure, and the force transmission structure (31) is snapped into the annular groove (522); The first swing arm portion (51) is provided with a pulley (511) for reducing the friction force generated on the inclined surface of the lifting lever ramp member (7); the lifting lever ramp member (7) includes a flat plate (71) and an inclined plate (72) connected in sequence at an obtuse angle; the bottom surface of the inclined plate (72) is the inclined surface of the lifting lever ramp member (7); when the pulley (511) contacts the bottom surface of the flat plate (71), the shift fork member (6) is tilted to the highest position, so that the shift fork member (6) is away from the bulk material conveyor feed port cover plate (200); The screw rod (2) and the guide rod (4) are both arranged in a direction parallel to the moving direction of the bulk material conveyor feed port cover (200); The installation height of the screw rod (2) on the bracket (10) is higher than the installation height of the guide rod (4).

2. The bulk material conveyor feed port cover opening and closing device according to claim 1, characterized in that: The first swing arm portion (51) is located below the screw rod (2); The main body of the fulcrum portion (52) is cylindrical.

3. The bulk material conveyor feed port cover opening and closing device according to claim 1, characterized in that: The number of the transmission components (3), the swinging member (5), and the lever-lifting ramp member (7) is two; wherein the first transmission component is linked with the first swinging member so that the first swinging member pushes the fork member (6); wherein the second transmission component is linked with the second swinging member so that the second swinging member pushes the fork member (6); the first transmission component and the second transmission component are spaced apart on the screw rod (2); the swinging member (5) and the lever-lifting ramp member (7) are matched one-to-one when in contact with each other.

4. The bulk material conveyor feed port cover opening and closing device according to claim 3, characterized in that: The device further comprises at least two travel switches (8) mounted on the bracket; one of the travel switches (8) is used to limit the first transmission component from lateral movement on the screw rod (2) beyond a left limit position, and the other travel switch (8) is used to limit the second transmission component from lateral movement on the screw rod (2) beyond a right limit position.

5. The bulk material conveyor feed port cover opening and closing device according to any one of claims 1 to 4, characterized in that: The number of the cover plate driving devices (300) is two; the first cover plate driving device is located on the longitudinal front side of the bracket (10), the second cover plate driving device is located on the longitudinal rear side of the bracket (10), and the first cover plate driving device and the second cover plate driving device are arranged at intervals; the transverse virtual center line of the bulk material conveyor feed port cover plate (200) is located between the first cover plate driving device and the second cover plate driving device.

6. A bulk material unloading and conveying system at a port, characterized in that: The invention comprises a bulk material ship unloader (100) provided with a material discharge port, a bulk material conveyor feed port cover plate opening and closing device according to any one of claims 1 to 5, a plurality of bulk material conveyor feed port cover plates (200), a plurality of cover plate movable guide mechanisms (500) corresponding one-to-one to the bulk material conveyor feed port cover plates (200), at least one bulk material conveyor (600) and a controller; the bulk material conveyor (600) is a belt conveyor; The bulk material unloader (100) is used to move laterally in the port and unload bulk material to a designated feed port (400) of the bulk material conveyor (600) located above the bulk material conveyor (600); The bulk material conveyor feed port cover plate opening and closing device is installed next to the discharge port of the bulk material ship unloader (100) and is used to open and close multiple bulk material conveyor feed port cover plates (200) within the lateral movement range of the bulk material ship unloader (100) in the port; The bulk material conveyor feed inlet cover plate (200) is used to be pushed and pulled by the bulk material conveyor feed inlet cover plate opening and closing device to open and close the feed inlet (400) of the bulk material conveyor (600); The cover plate movable guide mechanism (500) is installed above the bulk material conveyor (600) and is used for movably installing the bulk material conveyor feed port cover plate (200); The bulk material conveyor (600) is used to transport bulk materials dropped from a feed port (400) of the bulk material conveyor (600); The controller is used to control the action of the rotary drive mechanism (1).

7. A control method for the bulk material unloading and conveying system at a port as claimed in claim 6, characterized in that: The following steps are involved: Step S1, controlling the bulk material ship unloader (100) to move so that the discharge port of the bulk material ship unloader (100) is located above the feed port (400) of the designated bulk material conveyor (600); then executing step S2; Step S2, controlling the rotary drive mechanism (1) to drive the screw (2) to rotate in a positive direction around its own virtual axis, and the transmission assembly (3) cooperates with the swing member (5) to cause the fork member (6) to push open the bulk material conveyor feed port cover (200), thereby opening the bulk material conveyor (600) feed port (400); then executing step S3; Step S3, the transmission assembly (3) moves to a limit position; then step S4 is executed; Step S4, the material discharge port of the bulk material ship unloader (100) is lowered until the material discharge port of the bulk material ship unloader (100) is docked with the material feed port (400) of the bulk material conveyor (600); then step S5 is executed; Step S5, the bulk material unloader (100) starts discharging the bulk material from the discharge port, and the bulk material falls onto the bulk material conveyor (600) through the feed port (400) of the bulk material conveyor (600); then step S6 is executed; Step S6, the discharge port of the bulk material unloader (100) stops discharging materials; then step S7 is executed; Step S7, the material discharge port of the bulk material ship unloader (100) rises until the material discharge port of the bulk material ship unloader (100) and the material feed port (400) of the bulk material conveyor (600) are separated into place; then step S8 is executed; Step S8, controlling the rotary drive mechanism (1) to drive the screw (2) to rotate in the reverse direction around its own virtual axis, and the transmission assembly (3) cooperates with the swing member (5) to cause the fork member (6) to push the bulk material conveyor feed port cover (200), thereby closing the bulk material conveyor (600) feed port (400); then executing step S9; Step S9, the transmission assembly (3) moves to another limit position; then step S10 is executed; Step S10, controlling the bulk material ship unloader (100) to move so that the discharge port of the bulk material ship unloader (100) is located above the feed port (400) of the next designated bulk material conveyor (600), and then repeating step S2.

8. A control method for the bulk material conveyor feed port cover opening and closing device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step S100, controlling the rotary drive mechanism (1) to drive the screw (2) to rotate in a positive direction around its own virtual axis, and the transmission assembly (3) cooperates with the swing member (5) to cause the fork member (6) to push open the bulk material conveyor feed port cover (200), thereby opening the bulk material conveyor (600) feed port (400); then executing step S200; Step S200, controlling the rotary drive mechanism (1) to drive the screw (2) to rotate in the reverse direction around its own virtual axis, and the transmission assembly (3) cooperates with the swing member (5) to make the fork member (6) push the bulk material conveyor feed port cover (200), thereby closing the bulk material conveyor (600) feed port (400).

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