Bulk material conveyor feed port cover plate opening and closing equipment, system using same and control method

Abstract

The invention provides bulk material conveyor feeding port cover plate opening and closing equipment which is used for opening or closing at least one bulk material conveyor feeding port cover plate in a push-pull mode and comprises a support and at least one cover plate driving device installed on the support. The cover plate driving device comprises a rotary driving mechanism, a lead screw, at least one transmission assembly, a guide rod, at least one swing piece, a shifting fork piece and at least one lever lifting inclined table piece. The port bulk cargo ship unloading and conveying system comprises a bulk cargo ship unloader, the bulk cargo conveyor feeding port cover plate opening and closing equipment, a plurality of bulk cargo conveyor feeding port cover plates, a plurality of cover plate movable guide mechanisms corresponding to the bulk cargo conveyor feeding port cover plates one to one, a bulk cargo conveyor and a controller. The invention further provides a control method applied to the port bulk cargo unshipping conveying system. The invention further provides a control method applied to the bulk material conveyor feeding port cover plate opening and closing equipment. The bulk cargo ship unloader can automatically open and close the cover plate of the feeding port of the bulk cargo conveyor.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment supporting bulk material conveyors and port ship unloaders and loaders, and particularly to an opening and closing device for the feed inlet cover of a bulk material conveyor, a system using the same, and a control method. Background Art

[0002] The port bulk grain conveying process is as follows: A general bulk material ship unloader unloads the bulk grain, and a belt conveyor or other equipment is used to transfer the unloaded bulk grain to a warehouse or a transportation vehicle. The bulk grain enters the warehouse or yard for warehousing management. When the bulk grain is out of the warehouse, it is loaded into the transportation equipment through a belt conveyor, a ship loader, etc. Each process can be monitored, scheduled, and managed. The port bulk grain conveying process is a systematic project involving mechanization, automation, and informatization. By optimizing the operation process, the port bulk grain conveying efficiency can be improved, the cost can be reduced, and the requirements of modern ports for large-scale and rapid turnover of bulk grain can be met.

[0003] Currently, most terminal bulk grain conveying systems generally use enclosed belt conveyors as the transfer tools for bulk grain. The feed inlet cover of the enclosed belt conveyor is generally of a push-pull type. When the feeding port of the bulk material ship unloader needs to be docked with or separated from the feed inlet of the enclosed belt conveyor, it is necessary to manually open or close the feed inlet cover of the enclosed conveyor, and the operator of the bulk material ship unloader operates the feed inlet of the bulk material ship unloader to dock with or separate from the feed inlet of the enclosed belt conveyor.

[0004] The above manual operation process for opening and closing the feed inlet cover of the enclosed conveyor has the following problems: First, the coordination and communication and manual operation efficiency are relatively low; the operator of the bulk material ship unloader communicates with the central control, and it is necessary to perform a feed port docking. The worker moves the ladder to the designated feed inlet of the enclosed belt conveyor, climbs the ladder to the box body of the enclosed belt conveyor, manually pulls open the cover, and the operator operates to lower the feeding port of the bulk material ship unloader to dock with the feed inlet of the enclosed conveyor. Finally, communicate with the worker to confirm the completion of the docking. Second, there are safety risks such as falling from a height and being injured in manual operation and man-machine cross-operation. When the worker climbs the ladder and stands on the box body of the enclosed belt conveyor, there is a risk of falling from a height and being injured. At the same time, the location is within the operation area of the bulk material ship unloader, and there are safety risks such as man-machine cross-operation collision and electric shock. Third, the manual operation efficiency is greatly affected by environmental factors and human physiological factors, and the labor intensity of the worker is high. The bulk material ship unloader needs to adjust its position according to the actual production situation on site. The time and frequency of docking or separating the feeding port of the bulk material ship unloader and the feed inlet of the enclosed conveyor are uncertain. Affected by natural factors such as light and temperature and human physiological factors at night, the operation efficiency of the worker drops significantly.

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

[0006] In view of this, it is necessary to propose an opening and closing device for the feed inlet cover of a bulk conveyor, a system using the same, and a control method to overcome several disadvantages in the above background technology and solve the following technical problems: how to automatically open and close the feed inlet cover of the corresponding position of the bulk conveyor by the bulk unloader, so as to economically improve the reliability of the port bulk unloader conveying system with multiple feed inlet covers of the bulk conveyor.

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

[0008] The present invention proposes an opening and closing device for the feed inlet cover of a bulk conveyor, which is used to push and pull to open or close at least one feed inlet cover of the bulk conveyor. The device is installed on a bulk unloader, and the device includes a bracket and at least one set of cover driving devices installed on the bracket; the cover driving device includes a rotary driving mechanism, a lead screw, at least one transmission component, a guide rod, at least one swing member, a fork member, and at least one lifting inclined platform member.

[0009] The rotary driving mechanism is installed on the bracket, and the rotary driving mechanism is used to drive the lead screw to rotate around its own virtual axis.

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

[0011] The transmission component is used to push the swing member, so that the swing member moves horizontally left and right along the length direction of the guide rod; a force transmission structure for pushing the swing member is provided on one side of the transmission component, and the force transmission structure is detachably abutted against the swing member; a second connection hole is provided through the other side of the transmission component, and the second connection hole is meshed and connected to the lead screw.

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

[0013] The swinging member is provided with a third connection hole therethrough, and the third connection hole is movably sleeved on the guide rod; when a part of the swinging member is pressed by the inclined surface of the lifting bar inclined platform member, a part of the swinging member and another part of the swinging member both swing around the virtual axis of the guide rod, so that the push cover plate portion of the fork member moves away from the cover plate of the feeding port of the bulk material conveyor;

[0014] The fork member is fixedly connected to another part of the swinging member, and the fork member is used to push the cover plate of the feeding port of the bulk material conveyor to move laterally, so as to realize the opening and closing of the feeding port of the bulk material conveyor;

[0015] The lifting bar inclined platform member is fixedly installed on the bracket.

[0016] Further, a part of the swinging member is a side portion of the swinging member; another part of the swinging member is the other side portion of the swinging member;

[0017] The swinging member as a whole sequentially includes: a first swing arm portion, a fulcrum portion and a second swing arm portion; a part of the swinging member is the first swing arm portion; another part of the swinging member is the second swing arm portion; the third connection hole is provided through the fulcrum portion;

[0018] The first swing arm portion is close to the longitudinal side of the guide rod, and the second swing arm portion is close to the longitudinal other side of the guide rod; when the first swing arm portion moves beside the lifting bar inclined platform member and is pressed down by the inclined surface of the lifting bar inclined platform member, the first swing arm portion swings downward around the virtual axis of the guide rod and the second swing arm portion swings upward around the virtual axis of the guide rod, so that the push cover plate portion of the fork member moves away from the cover plate of the feeding port of the bulk material conveyor.

[0019] Further, 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] Further, the first swing arm portion is located below the lead screw;

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

[0022] Further, the first swing arm portion is provided with a pulley for reducing the friction generated on the inclined surface of the lifting bar inclined platform member; the lifting bar inclined platform member includes a flat plate and an inclined plate which are sequentially connected at an obtuse angle; the bottom surface of the inclined plate is the inclined surface of the lifting bar inclined platform member; when the pulley contacts the bottom surface of the flat plate, the fork member tilts to the highest position, so that the fork member moves away from the cover plate of the feeding port of the bulk material conveyor.

[0023] Further, the setting directions of the lead screw and the guide rod are both parallel to the moving direction of the cover plate of the feeding port of the bulk material conveyor;

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

[0025] Furthermore, the number of the transmission assemblies, the swing members, and the lever ramp members is two each; the first transmission assembly is in linkage cooperation with the first swing member so that the first swing member pushes the fork member; the second transmission assembly is in linkage cooperation with the second swing member so that the second swing member pushes the fork member; the first transmission assembly and the second transmission assembly are arranged at intervals on the lead screw; the swing members and the lever ramp members are in one-to-one corresponding cooperation when they come into contact with each other.

[0026] Furthermore, the device further includes at least two travel switches mounted on the bracket; one travel switch is used to limit the lateral movement of the first transmission assembly on the lead screw beyond a left extreme limit position, and the other travel switch is used to limit the lateral movement of the second transmission assembly on the lead screw beyond a right extreme limit position.

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

[0028] The present invention further provides a port bulk material ship unloading and conveying system, including a bulk material ship unloader provided with a material dropping opening, the bulk material conveyor feed inlet cover opening and closing device as described in any one of the above, a plurality of bulk material conveyor feed inlet covers, a plurality of cover plate movable guiding mechanisms corresponding to the bulk material conveyor feed inlet covers one by one, at least one bulk material conveyor, and a controller; the bulk material conveyor is a belt conveyor.

[0029] The bulk material ship unloader is used for moving horizontally at the port and unloading bulk materials into the feed inlet of a designated bulk material conveyor located above the bulk material conveyor.

[0030] The bulk material conveyor feed inlet cover opening and closing device is installed beside the material dropping opening of the bulk material ship unloader, and is used for opening and closing a plurality of bulk material conveyor feed inlet covers within the horizontal movement stroke range of the bulk material ship unloader at the port.

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

[0032] The cover plate movable guiding mechanism is installed above the bulk material conveyor and is used for movably installing the bulk material conveyor feed inlet cover.

[0033] The bulk material conveyor is used for transporting the bulk materials dropped from the feed inlet of the bulk material conveyor.

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

[0035] The present invention further provides a control method applied to the port bulk material ship unloader conveying system as described above, which is characterized by including the following steps:

[0036] Step S1, control the movement of the bulk material ship unloader to make the discharge opening of the bulk material ship unloader located above the feed inlet of the designated bulk material conveyor; then execute step S2;

[0037] Step S2, control the rotary drive mechanism to drive the lead screw to rotate forward around its own virtual axis, and the transmission component cooperates with the swing member to make the fork member push open the cover plate of the feed inlet of the bulk material conveyor, thereby opening the feed inlet of the bulk material conveyor; then execute step S3;

[0038] Step S3, the transmission component moves to an extreme position; then execute step S4;

[0039] Step S4, the discharge opening of the bulk material ship unloader descends until the discharge opening of the bulk material ship unloader is docked with the feed inlet of the bulk material conveyor; then execute step S5;

[0040] Step S5, the discharge opening of the bulk material ship unloader starts to discharge materials, and the bulk materials fall onto the bulk material conveyor through the feed inlet of the bulk material conveyor; then execute step S6;

[0041] Step S6, the discharge opening of the bulk material ship unloader stops discharging materials; then execute step S7;

[0042] Step S7, the discharge opening of the bulk material ship unloader rises until the discharge opening of the bulk material ship unloader is separated from the feed inlet of the bulk material conveyor in place; then execute step S8;

[0043] Step S8, control the rotary drive mechanism to drive the lead screw to rotate reversely around its own virtual axis, and the transmission component cooperates with the swing member to make the fork member push and close the cover plate of the feed inlet of the bulk material conveyor, thereby closing the feed inlet of the bulk material conveyor; then execute step S9;

[0044] Step S9, the transmission component moves to another extreme position; then execute step S10;

[0045] Step S10, control the movement of the bulk material ship unloader to make the discharge opening of the bulk material ship unloader located above the feed inlet of the next designated bulk material conveyor, and then repeat step S2.

[0046] The present invention further provides a control method applied to the opening and closing device of the feed inlet cover plate of the bulk material conveyor, including the following steps:

[0047] Step S100, control the rotary drive mechanism to drive the lead screw to rotate forward around its own virtual axis, and the transmission component cooperates with the swing member to make the fork member push open the cover plate of the feed inlet of the bulk material conveyor, thereby opening the feed inlet of the bulk material conveyor; then execute step S200;

[0048] Step S200, control the rotation drive mechanism to drive the lead screw to rotate reversely around its virtual axis, and the transmission assembly cooperates with the swing member to make the fork member push and close the feed port cover plate of the bulk material conveyor, so as to close the feed port of the bulk material conveyor.

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

[0050] The present invention can automatically open and close the feed port cover plate of the corresponding bulk material conveyor 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 cover plates; the present invention realizes the reduction of manual intervention, improves the operation efficiency, lays a foundation for high-efficiency operation for the full automation operation of the bulk material unloader, saves manpower and reduces safety risks, that is, significantly reduces the manual operation requirements during the ship unloading operation, thereby effectively reducing the safety accident risk caused by improper manual operation; the present invention also improves the efficiency of material port docking or separation, can realize rapid and accurate material port docking and separation, improves the efficiency of the entire ship unloading process, and provides strong support for the full-automatic process operation of bulk materials / grains; the present invention also has the advantages of simple structure, strong reliability, being able to adapt to narrow spaces, and small modification to the original port bulk material unloader. Brief Description of the Drawings

[0051] Figure 1 It is a three-dimensional structure schematic diagram of an equipment for opening and closing the feed port cover plate of a bulk material conveyor according to the present invention in Embodiment 1;

[0052] Figure 2 It is a three-dimensional structure schematic diagram of an equipment for opening and closing the feed port cover plate of a bulk material conveyor according to the present invention in Embodiment 2;

[0053] Figure 3 It is a three-dimensional structure schematic diagram of an equipment for opening and closing the feed port cover plate of a bulk material conveyor according to the present invention in Embodiment 3;

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

[0055] Figure 5 It is a three-dimensional structure schematic diagram of the transmission assembly related to the present invention;

[0056] Figure 6 It is a three-dimensional structure schematic diagram of the lever inclined platform member related to the present invention;

[0057] Figure 7 It is a three-dimensional structure schematic diagram of the swing member related to the present invention;

[0058] Figure 8 It is a schematic diagram of the structural principle in the top view direction of a port bulk material unloading and conveying system according to the present invention;

[0059] Description of the reference numerals:

[0060] Bracket 10; Bulk unloader 100; Feeding port cover plate 200 of the bulk conveyor; Cover plate driving device 300; Rotary driving mechanism 1; Lead screw 2; Transmission assembly 3; Force transmission structure 31; Second connection hole 32; Lead screw nut 33; Guide rod 4; Swing member 5; First swing arm portion 51; Fulcrum portion 52; Third connection hole 521; Annular groove 522; Second swing arm portion 53; Pulley 511; Fork member 6; Lifting bar inclined table member 7; Travel switch 8; Cover plate movable guiding mechanism 500; Feeding port 400; Bulk conveyor 600; Flat plate 71; Inclined plate 72; Reinforcing bar 9. Detailed implementation manners

[0061] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be further described clearly and completely below in conjunction with the embodiments of the present invention. It should be noted that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0062] It should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0063] The terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", "fourth" may explicitly or implicitly include one or more of such features.

[0064] Embodiment 1

[0065] As Figure 1 , Figure 5 , Figure 6 , Figure 7 shown:

[0066] This embodiment provides a device for opening and closing the cover plate of the feeding port of a bulk material conveyor, which is used to push and pull to open or close at least one cover plate 200 of the feeding port of the bulk material conveyor. This device is installed on a bulk material unloader 100, and this device includes a bracket 10 and at least one set of cover plate driving devices 300 installed on the bracket 10;

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

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

[0069] The transmission component 3 is used to push the swing member 5, so that the swing member 5 moves horizontally left and right along the length direction of the guide rod 4; a force transmission structure 31 for pushing the swing member 5 is provided on one side of the transmission component 3, and the force transmission structure 31 is detachably abutted against the swing member 5; a second connection hole 32 is provided through the other side of the transmission component 3, and the second connection hole 32 is meshed and connected to the lead screw 2;

[0070] The guide rod 4 is installed 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;

[0071] A third connection hole 521 is provided through the swing member 5, and the third connection hole 521 is movably sleeved on the guide rod 4; when a part of the swing member 5 is pressed by the inclined surface of the lifting bar inclined table member 7, then a part of the swing member 5 and the other part of the swing member 5 both swing around the virtual axis of the guide rod 4, so that the cover plate pushing part of the fork member 6 moves away from the cover plate 200 of the feeding port of the bulk material conveyor;

[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 cover plate 200 of the feeding port of the bulk material conveyor to move horizontally, so as to realize the opening and closing of the feeding port 400 of the bulk material conveyor 600;

[0073] The lifting bar inclined table member 7 is fixedly installed on the bracket 10; the lifting bar inclined table member 7 is used to press a part of the swing member 5 during the process that the cover plate pushing part of the fork member 6 swings upward and moves away from the cover plate 200 of the feeding port of the bulk material conveyor.

[0074] Embodiment 2

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

[0076] As Figure 1 , Figure 5 , Figure 6 , Figure 7 shown below:

[0077] The force transmission structure 31 is an open - hole plate - like structure, a bayonet structure or a card - plate convex structure;

[0078] When the force transmission structure 31 is an open - hole plate - like structure, the force transmission structure 31 is a hole plate provided with a first connection hole, the guide rod 4 horizontally passes through the first connection hole, and a transverse end face 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 convex portions (as Figure 5 shown below) protrude from both sides of the bayonet structure, and a transverse end face of the force transmission structure 31 is detachably abutted against the swinging member 5;

[0080] When the force transmission structure 31 is a card - plate convex structure, the force transmission structure 31 is a convex portion protruding from a side portion of the transmission assembly 3, and a transverse end face of the force transmission structure 31 is detachably abutted against the swinging member 5.

[0081] Embodiment 3

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

[0083] A part of the swinging member 5 is a side portion of the swinging member 5; another part of the swinging member 5 is the other side portion of the swinging member 5.

[0084] Optimally, the swinging 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 part of the swinging member 5 is the first swing arm portion 51; another part of the swinging member 5 is the second swing arm portion 53; a third connection hole 521 is disposed through the fulcrum portion 52;

[0085] The first swing arm portion 51 is longitudinally close to one side of the guide rod 4, and the second swing arm portion 53 is longitudinally close to the other side of the guide rod 4; when the first swing arm portion 51 moves to the side of the lever - lifting inclined - table member 7 and is pressed down by the inclined surface of the lever - lifting inclined - table 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, so that the push - cover plate portion of the fork member 6 moves away from the feed - inlet cover plate 200 of the bulk - material conveyor.

[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 plate 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 feed port cover plate 200 of the bulk material conveyor.

[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] In a further optimized manner, one rotating end of the screw rod 2 is pivotally 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] Embodiment 4 is an optimized design of any one of the technical solutions in Embodiment 1, Embodiment 2 or Embodiment 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 swing members 5, and the lever inclined platform members 7 is two; the first transmission component is in linkage cooperation with the first swing member so that the first swing member pushes the fork member 6; the second transmission component is in linkage cooperation with the second swing member so that the second swing member pushes the fork member 6; the first transmission component and the second transmission component are arranged at intervals on the lead screw 2; the swing members 5 and the lever inclined platform members 7 are in one-to-one corresponding cooperation when they come into contact with each other.

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

[0101] Further optimally, the two ends of a reinforcing rod 9 are respectively fixedly connected to the first swing member and the second swing member.

[0102] Embodiment 5

[0103] Embodiment 5 is an optimized design of any one of the technical solutions in Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4, as Figures 1 - 7 shown:

[0104] The number of the cover plate driving devices 300 is two; the first cover plate driving device is located at the longitudinal front side of the bracket 10, and the second cover plate driving device is located at the longitudinal rear side of the bracket 10. The first cover plate driving device and the second cover plate driving device are arranged at intervals; the virtual center line in the transverse direction of the cover plate 200 of the bulk material conveyor inlet is located between the first cover plate driving device and the second cover plate driving device.

[0105] Embodiment 6

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

[0107] as Figures 1 - 8 shown:

[0108] This embodiment provides a port bulk material ship unloading and conveying system, including a bulk material ship unloader 100 provided with a material dropping port, the bulk material conveyor inlet cover opening and closing device as described in any one of the above, a plurality of bulk material conveyor inlet covers 200, a plurality of cover plate movable guiding mechanisms 500 corresponding to the bulk material conveyor inlet covers 200 one by one, at least one bulk material conveyor 600, and a controller; the bulk material conveyor 600 is a belt conveyor;

[0109] The bulk material ship unloader 100 is used for laterally moving at the port and unloading bulk materials into the inlet 400 of the designated bulk material conveyor 600 located above the bulk material conveyor 600;

[0110] The opening and closing device for the cover plate of the bulk material conveyor inlet is installed beside the material dropping opening of the bulk material unloader 100, and is used to open and close the cover plates 200 of a plurality of bulk material conveyor inlets within the lateral movement range of the bulk material unloader 100 in the port;

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

[0112] The cover plate moving guiding mechanism 500 is installed above the bulk material conveyor 600 and is used to movably install the cover plate 200 of the bulk material conveyor inlet;

[0113] The bulk material conveyor 600 is used to transport the bulk material falling from the inlet 400 of the bulk material conveyor 600;

[0114] The controller is used to control the rotation driving mechanism 1 to act.

[0115] This embodiment further provides a control method applied to the port bulk material unloading and conveying system as described above, including the following steps:

[0116] Step S1, control the movement of the bulk material unloader 100 so that the material dropping opening of the bulk material unloader 100 is located above the inlet 400 of the specified bulk material conveyor 600; then execute step S2;

[0117] Step S2, control the rotation driving mechanism 1 to drive the lead screw 2 to rotate positively around its own virtual axis, and the transmission assembly 3 cooperates with the swing member 5 to make the fork member 6 push open the cover plate 200 of the bulk material conveyor inlet, so as to open the inlet 400 of the bulk material conveyor 600; then execute step S3;

[0118] Step S3, the transmission assembly 3 moves to an extreme position; then execute step S4;

[0119] Step S4, the material dropping opening of the bulk material unloader 100 descends until the material dropping opening of the bulk material unloader 100 is docked with the inlet 400 of the bulk material conveyor 600; then execute step S5;

[0120] Step S5, the material dropping opening of the bulk material unloader 100 starts to discharge materials, and the bulk materials fall onto the bulk material conveyor 600 through the inlet 400 of the bulk material conveyor 600; then execute step S6;

[0121] Step S6, the material dropping opening of the bulk material unloader 100 stops discharging materials; then execute step S7;

[0122] Step S7, the blanking opening of the bulk material unloader 100 rises until the blanking opening of the bulk material unloader 100 is separated from the feeding port 400 of the bulk material conveyor 600 in place; then step S8 is executed;

[0123] Step S8, control the rotary drive mechanism 1 to drive the lead screw 2 to rotate reversely around its own virtual axis, and the transmission assembly 3 cooperates with the swing member 5 to make the fork member 6 push and close the feeding port cover plate 200 of the bulk material conveyor, so as to close the feeding port 400 of the bulk material conveyor 600; then step S9 is executed;

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

[0125] Step S10, control the movement of the bulk material unloader 100 so that the blanking opening of the bulk material unloader 100 is located above the feeding port 400 of the next designated bulk material conveyor 600, and then repeat step S2.

[0126] Embodiment 7

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

[0128] As Figures 1 - 7 shown:

[0129] This embodiment further proposes a control method applied to the opening and closing device of the feeding port cover plate of the bulk material conveyor as described above, including the following steps:

[0130] Step S100, control the rotary drive mechanism 1 to drive the lead screw 2 to rotate forward around its own virtual axis, and the transmission assembly 3 cooperates with the swing member 5 to make the fork member 6 push open the feeding port cover plate 200 of the bulk material conveyor, so as to open the feeding port 400 of the bulk material conveyor 600; then step S200 is executed;

[0131] Step S200, control the rotary drive mechanism 1 to drive the lead screw 2 to rotate reversely around its own virtual axis, and the transmission assembly 3 cooperates with the swing member 5 to make the fork member 6 push and close the feeding port cover plate 200 of the bulk material conveyor, so as to close the feeding port 400 of the bulk material conveyor 600.

[0132] Embodiment 8

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

[0134] As Figures 1 - 8 shown:

[0135] Specifically, the fork hook of the fork member 6 is fixed, but it can also be adjustable, such as adjustable screws, telescopic tubes, etc.

[0136] Specifically, the overall structure of the fork member 6 is fixed, but it can also be made adjustable, such as adjusting the width of the front arm, rear arm, and moving fork, etc.

[0137] Specifically, the rotary drive mechanism 1 can adopt chain wheel drive or reducer drive.

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

[0139] Specifically, the fork member 6 can also adopt an electromagnet, which attracts and holds the cover plate (i.e., the cover plate 200 of the feeding port of the bulk material conveyor) to move when energized, or the cover plate moves and separates when the power is cut off.

[0140] Specifically, the control circuit of the controller is connected in series with the control loop of the bulk material unloader 100 to realize the docking or separation of the feeding port of the bulk material unloader 100 with one key. It can also be that the bulk material unloader 100 adds PLC output points for the docking or separation signal of the feeding port. The controller opens or closes the cover plate, and inputs the signal that the cover plate is opened in place or the cover plate is closed in place into the PLC through the travel limit feedback, etc.

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

[0142] Specifically, the rotary drive mechanism 1 uses a single motor as the power source, and a chain wheel is used to drive the lead screw, with good balance and high stability.

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

[0144] Specifically, the swing member 5 and the fork member 6 cooperate using the lever principle. With the sliding sleeve in the third connection hole 521 as the fulcrum, through the cooperation of the first swing arm portion 51 and the lifting bar inclined table member 7, the fork member 6 opens and closes the cover plate to adapt to a narrow space.

[0145] Specifically, the design of the fork for moving the cover plate of the fork member 6 can adapt to the situation where there are height, left-right deviations at the feeding port of the enclosed belt conveyor.

[0146] Specifically, the control loop of the controller is connected in series with the docking or separation control loop of the feeding port of the bulk material unloader 100 to realize the function of docking or separating the feeding port with one key.

[0147] Specifically, the rotation drive mechanism 1 uses a single motor as the power source, and a sprocket drives the lead screw 2, with good balance and high stability.

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

[0149] Specifically, at this time, the material discharge opening of the bulk material unloader 100 is directly above the feeding opening of the enclosed belt conveyor. The bulk material unloader 100 automatically opens and closes the cover plate 200 of the feeding opening of the bulk material conveyor through the cover plate opening and closing device of the bulk material conveyor feeding opening. The bracket 10 is installed on the steel beam above the material discharge opening of the bulk material unloader 100. An electric motor and a speed reducer are installed at the middle position of the fixed frame cross beam. The speed reducer is installed on the speed reducer fixing seat. The sprocket of the speed reducer drives the chain to connect to the sprocket of the lead screw. The rotating parts such as the chain, the sprocket of the lead screw, and the sprocket of the speed reducer are installed with a sprocket cover for protection. The lead screw seat is installed at both ends of the fixed frame cross beam. A guide rod 4, i.e., a slide rod, is installed directly below the lead screw 2. A lead screw nut 33 is installed on the lead screw 2. The lead screw nut 33 is a component on the other side of the transmission component 3. The lead screw nut 33 pushes one side of the transmission component 3. The sliding sleeve in the third connection hole 521 serves as the fulcrum of the fork member 6. Hook-shaped forks for moving the cover plate are provided at both ends of the blocking rod of the fork member 6. The lifting lever inclined table member 7 can adopt a guide plate structure. The lifting lever inclined table member 7 is installed on the end beam of the fixed frame of the bracket 10. A closed-in-place limit switch is provided near one end of the lead screw 2, and an opened-in-place limit switch is provided near the other end of the lead screw 2.

[0150] Specifically, the fixed frame is horizontally installed and fixed on the steel beam above the material discharge opening of the bulk material unloader 100. The end beam of the fixed frame is parallel to the pushing and pulling direction of the cover plate 200 of the bulk material conveyor feeding opening. The lead screw 2, the guide rod 4, and the fork member 6 are parallel to the end beam of the fixed frame of the bracket 10. A speed reducer is installed in the middle of the fixed frame cross beam. The electric motor and the speed reducer are connected. The electric motor and the speed reducer are on the opening side of the cover plate 200 of the bulk material conveyor feeding opening. The sprocket of the speed reducer and the sprocket of the lead screw are in the same vertical plane. Both the first swing arm portion 51 and the second swing arm portion 53 are perpendicular to the direction of the guide rod 4.

[0151] Specifically, there is no interference between the blanking opening of the bulk material unloader 100 and the fixed frame crossbeam. The bottom of the lifting bar inclined platform member 7 is an end face with an inclined surface transitioning to a plane. When the pulley 511 slides from the inclined plate 72 end face of the lifting bar inclined platform member 7 it touches to the flat plate 71 end face of the lifting bar inclined platform member 7, the fork member 6 uses the sliding sleeve located at the third connection hole 521 of the fulcrum portion 52 as a fulcrum, and the fork member 6 acts as a lever and flips upward. When the closed-in-place limit switch touches and triggers the lead screw nut 33 located in the transmission assembly 3, the fork member 6 is in a horizontal state; when the pulley 511 slides from the flat plate 71 end face of the lifting bar inclined platform member 7 it touches to the inclined plate 72 end face of the lifting bar inclined platform member 7, the fork member 6 uses the sliding sleeve located at the third connection hole 521 of the fulcrum portion 52 as a fulcrum, and the fork member 6 acts as a lever and flips downward until the fork member 6 touches the blanking conveyor inlet cover plate 200 and then stops flipping downward; when the fork member 6 moves in the direction of the lead screw sprocket (such as Figure 3 )), the fork member 6 hooks (or presses or magnetically attracts) the blanking conveyor inlet cover plate 200 to move until it stops when the closed-in-place limit switch touches and triggers the lead screw nut 33; both the closed-in-place limit switch and the opened-in-place limit switch are normally open mechanical switches, that is, the travel switch 8.

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

[0153] The blanking opening of the bulk material unloader 100 is directly above the inlet 400 of the blanking conveyor 600. The initial position of the fork member 6 is the above-mentioned horizontal state. When the motor of the rotary drive mechanism 1 rotates forward to drive, the reducer sprocket drives the chain to drive the lead screw sprocket, the lead screw 2 rotates, and the lead screw nut 33 on the lead screw 2 moves in the direction of the lead screw sprocket. At the same time, the swinging member 5 also moves synchronously along the guide rod 4. When the pulley 511 slides from the flat plate 71 end face of the lifting bar inclined platform member 7 it touches to the inclined plate 72 end face of the lifting bar inclined platform member 7, the fork member 6 uses the sliding sleeve located at the third connection hole 521 of the fulcrum portion 52 as a fulcrum, and the fork member 6 acts as a lever and flips downward until the fork member 6 touches the blanking conveyor inlet cover plate 200 and then stops flipping downward. Continuing to move, the fork member 6 hooks the blanking conveyor inlet cover plate 200 to move until it stops when the closed-in-place limit switch touches and triggers the lead screw nut 33. When it stops, the blanking conveyor inlet cover plate 200 is fully opened;

[0154] When the position motor of the rotation drive mechanism 1 reversely drives, the reducer sprocket drives the chain to drive the lead screw sprocket, the lead screw 2 rotates, the lead screw nut 33 moves in the opposite direction of the lead screw sprocket, and at the same time, the swing member 5 also moves synchronously along the guide rod 4. The fork member 6 moves to the position where the fork member 6 hooks the feed port cover plate 200 of the bulk material conveyor and then continues to move. When the pulley 511 slides from the inclined plate 72 end face of the lifting lever inclined table member 7 it touches to the flat plate 71 end face of the lifting lever inclined table member 7, the fork member 6 takes the sliding sleeve located at the third connection hole 521 of the fulcrum portion 52 as the fulcrum, and the fork member 6 works as a lever and flips upward. The fork member 6 separates from the feed port cover plate 200 of the bulk material conveyor, and the feed port cover plate 200 of the bulk material conveyor is completely closed. Continuing to move, when the closing-in place limit switch touches and triggers the lead screw nut 33, the fork member 6 resumes its initial horizontal state.

[0155] The control logic of the controller of this port bulk material ship unloader conveying system is as follows:

[0156] The control loop of the controller is connected in series to the two-port docking or separation control loop of the bulk material ship unloader 100. Specifically: The driver clicks the "Bulk Material Ship Unloader *# Hopper Lowering" icon on the industrial control touch screen in the driver's cab, and this signal is transmitted to the PLC. The PLC outputs a "*# Cover Plate Open" signal to control the closing of the normally open contact of the intermediate relay. The coil of the motor forward rotation contactor controlled by the relay is energized, the motor forward rotation contactor is closed, the motor rotates forward, and the above-mentioned bulk material conveyor feed port cover opening and closing device works to open the feed port cover plate 200 of the bulk material conveyor. After the opening-in place limit switch is triggered, the intermediate relay in the opening-in place feedback loop is energized, the normally open contact is closed, and the opening-in place signal is input to the PLC. The PLC outputs a "Bulk Material Ship Unloader *# Hopper Lowering" signal to control the lowering of the hopper of the bulk material ship unloader 100 to dock with the feed port of the open and closed belt conveyor. After the lowering-in place signal is triggered and fed back to the PLC, the PLC stops outputting the "Bulk Material Ship Unloader *# Hopper Lowering" signal, and the hopper of the bulk material ship unloader 100 stops lowering, and the docking of the hopper of the bulk material unloading equipment 100 is completed;

[0157] The driver clicks the "Bulk Material Unloader *# Hopper Rising" icon on the industrial control touch screen. This signal is transmitted to the PLC. The PLC outputs the "Bulk Material Unloader *# Hopper Rising" signal to control the rising of the hopper of the bulk material unloader 100 to separate it from the feeding port 400 of the bulk material conveyor 600. When the rising-in-place signal is triggered and fed back to the PLC, the PLC stops outputting the "Bulk Material Unloader *# Hopper Rising" signal, and the hopper of the bulk material unloader 100 stops rising. At the same time, the PLC outputs the "*# Cover Plate Closing" signal to control the closing of the normally open contact of the intermediate relay. The coil of the motor reverse contactor controlled by the relay is energized, the motor reverse contactor is attracted, and the motor rotates to execute the process of closing the cover plate 200 of the feeding port of the bulk material conveyor. After the closing-in-place limit switch is triggered, the intermediate relay in the closing-in-place feedback loop is energized, the normally open contact is attracted, and the closing-in-place signal is fed back to the PLC, and the separation of the hopper of the bulk material unloader 100 is completed.

[0158] Optimally, the control loop of the controller is connected in series to the control loop for the docking or separation of the two ports of the bulk material unloader, and travel limit switches are interlocked in the control loop and the program, and interlock protection is set for the lowering and rising of the hopper of the bulk material unloader 100 and the opening and closing of the cover plate 200 of the feeding port of the bulk material conveyor, automatically realizing the function of docking or separating the hoppers of the bulk material unloader 100 and the bulk material conveyor 600.

[0159] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A bulk material conveyor feed port cover plate opening and closing device, used for pushing and pulling to open or close at least one bulk material conveyor feed port cover plate (200), the device is 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 rotation 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 lever lifting ramp member (7); The rotary drive mechanism (1) is mounted on the 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), so that the swinging member (5) moves 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 connection hole (32) is provided through the other side of the transmission assembly (3), and the second connection hole (32) is meshedly 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 to the left and right; The swing member (5) is provided with a third connection hole (521) penetrating therethrough, and the third connection 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 fork member (6) is fixedly connected to another part of the swing member (5), and the 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 lever ramp member (7) is fixedly mounted on the bracket (10).

2. The bulk material conveyor feed port cover opening and closing device according to claim 1, characterized in that: A part of the swing member (5) is one side of the swing member (5); another part of the swing member (5) is another side of the swing member (5); The swing member (5) as a whole comprises in sequence: a first swing arm portion (51), a fulcrum portion (52) and a second swing arm portion (53); a part of the swing member (5) is the first swing arm portion (51); another part of the swing member (5) is the second swing arm portion (53); a third connection 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).

3. The bulk material conveyor feed port cover opening and closing device according to claim 2, characterized in that: 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).

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

5. The bulk material conveyor feed port cover opening and closing device according to claim 2, characterized in that: The first swing arm part (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 fork member (6) is tilted to the highest position, so that the fork member (6) is away from the bulk material conveyor feed port cover plate (200).

6. The bulk material conveyor feed port cover opening and closing device according to claim 1, characterized in that: The screw rod (2) and the guide rod (4) are arranged in a direction parallel to the moving direction of the bulk material conveyor feed port cover plate (200); The installation height of the screw rod (2) on the bracket (10) is higher than the installation height of the guide rod (4).

7. 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 cooperates with the first swinging member so that the first swinging member pushes the fork member (6); wherein the second transmission component cooperates 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 arranged at intervals on the screw rod (2); the swinging member (5) and the lever-lifting ramp member (7) cooperate one-to-one when they are in contact with each other.

8. The bulk material conveyor feed port cover opening and closing device according to claim 7, 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 lateral movement of the first transmission component on the screw rod (2) beyond a left limit position, and the other travel switch (8) is used to limit the lateral movement of the second transmission component on the screw rod (2) beyond a right limit position.

9. The bulk material conveyor feed port cover opening and closing device according to any one of claims 1 to 8, 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 an interval; 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.

10. 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 as claimed in any one of claims 1 to 9, 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 the 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 beside the discharge port of the bulk material ship unloader (100) and is used to open and close a plurality of 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 bulk material conveyor 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).

11. A control method for the bulk material unloading and conveying system at a port as claimed in claim 10, characterized in that: The following steps are involved: Step S1, controlling the bulk material ship unloader (100) to move so that the material discharge port of the bulk material ship unloader (100) is located above the material 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 make the fork member (6) push open the bulk material conveyor feed port cover plate (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 material discharge port of the bulk material unloader (100) starts to discharge 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; Step S6, the material discharge port of the bulk material ship unloader (100) stops discharging materials; then execute step S7; 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 make the fork member (6) push the bulk material conveyor feed port cover plate (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 material discharge port of the bulk material ship unloader (100) is located above the material feed port (400) of the next designated bulk material conveyor (600), and then repeating step S2.

12. A control method for the bulk material conveyor feed port cover opening and closing device according to any one of claims 1 to 9, 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 make the fork member (6) push open the bulk material conveyor feed port cover plate (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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