JPWO2013132578A1 - Lifting equipment - Google Patents

Abstract

The unloading device 100 is provided in the powder carrier 1. The unloading device 100 is provided on the bottom portion 2a of the hold 2 and is connected to the bucket elevator 110 and transfers the cargo such as particles to the bucket elevator 110. And an air slider 120 that moves in the horizontal direction toward the lower end side. The granular material carrier 1 includes a plurality of holds 2 partitioned in a watertight manner, and a bucket elevator 110 and an air slider 120 are provided in each hold 2. A connecting portion between the bucket elevator 110 and the air slider 120 is provided with an extraction gate 130 including a flow rate adjusting valve 131 and a manual valve 132.

Description

  The present invention relates to a powder carrier for carrying cargo of inorganic particles such as cement, fly ash, calcium carbonate (tankal), slag, clinker and the like, and cargo of organic particles including grains. The present invention relates to an applicable lifting device.

  2. Description of the Related Art As a cargo carrier that carries a cargo of granular materials such as cement, fly ash, tankal, slag, clinker, and cereal, for example, a powder carrier disclosed in Patent Document 1 below is known. This powder transport ship has, as a ship bottom structure, an inclined part provided with a cloth material toward a powder introduction path at the center of the bottom part in a plurality of compartments, and blows out compressed air from the bottom part of the cloth material. Thus, the fluidity of the fluid is ensured and the structure for transporting it to the powder introduction path is provided.

  The powder guided to the powder introduction path by the compressed air is conveyed in the front-rear direction of the hull by a conveyance conveyor provided in the powder introduction path, and is unloaded after being conveyed to the cellar pump by the vertical transfer means. . From these facts, it can be said that this powder transport ship has a cargo holding device constituted by a partitioned cargo hold, a ship bottom structure, a powder introduction path, a transfer conveyor, and the like.

JP 2002-356194 A

  However, in the conventional powder transport ship disclosed in Patent Document 1, the powder introduction path constituting the unloading device has a structure extending in the front-rear direction of the hull through a plurality of holds. For this reason, there is a problem that the stability upon damage (damage stability: DS) is not good.

  That is, for example, when seawater enters and floods at least one of the plurality of holds, the seawater reaches each hold via the powder introduction path, and all the holds are flooded. In addition to being unable to handle the powder loaded in the product as a product, the stability when damaged is not good.

  An object of the present invention is to provide a lifting device that solves the above-described problems caused by the prior art, has good stability when damaged, and can stably lift a granular material from a hold. .

  An unloading apparatus according to the present invention is an unloading apparatus that is installed in a granular material carrier ship that loads and transports a granular material in a plurality of compartments, and unloads the granular material from within the cargo space. A vertical transfer means for vertically transferring the granular material in the hold partitioned by a partition wall so as to be watertight, and provided at the bottom of the hold and connected to the vertical transfer means, the hold Horizontal transfer means for horizontally transferring the granular material toward the lower end side of the vertical transfer means, wherein the vertical transfer means is arranged for each ship hold, and the horizontal transfer means for each ship hold It is arranged to be watertight.

  In addition, the unloading apparatus according to the present invention is installed in a granular material carrier ship that loads and conveys a granular material in a plurality of compartments, and unloads the granular material from the cargo space. The vertical transfer means for transferring the granular material in the hold vertically partitioned by a partition wall in a vertical direction, and provided at the bottom of the hold and connected to the vertical transfer means, Horizontal transfer means for horizontally transferring the powder particles in the hold toward the lower end side of the vertical transfer means, and the vertical transfer means is provided on the partition walls of at least two adjacent hold holds. The horizontal transfer means is arranged so as to be watertight for each cargo hold, and the connection between the vertical transfer means and the horizontal transfer means is connected to be closed by the watertight means. It is characterized by being.

  In one embodiment of the present invention, the vertical transfer means is a vertical bucket elevator or a vertical screw conveyor, and the horizontal transfer means is an air slider.

  In another embodiment of the present invention, it further comprises control means for controlling the supply amount of the granular material in the hold to the vertical transfer means, and the control means has a current value of a drive motor of the vertical transfer means. Alternatively, the air slider is adjusted based on the amount of electric power to control the supply amount, and when the level of the granular material in the vertical transfer means becomes a predetermined value or more, the air slider is similarly used. The supply amount is controlled by adjusting the air volume.

  In still another embodiment of the present invention, the control means controls the watertight means to be always closed except when the powder is unloaded, and when the powder is unloaded, If any of the holds is damaged, the watertight means is controlled to be fully closed.

  ADVANTAGE OF THE INVENTION According to this invention, the stability property at the time of damage is favorable, and a granular material can be stably unloaded from a hold.

It is an upper top view which shows the structure of the granular material carrier ship to which the unloading apparatus which concerns on the 1st Embodiment of this invention is applied. It is side sectional drawing which shows the structure of the granular material carrier ship to which the unloading apparatus is applied. It is a width direction schematic sectional drawing which shows the structure of the granular material carrier ship to which the unloading apparatus is applied. It is an upper top view which shows the structure of the granular material carrier ship to which the unloading apparatus which concerns on the 2nd Embodiment of this invention is applied. It is side sectional drawing which shows the structure of the granular material carrier ship to which the unloading apparatus is applied. It is a block diagram which shows the outline | summary of the system configuration | structure of the unloading apparatus. It is an instrumentation system diagram which shows the outline | summary of the system configuration | structure of the unloading apparatus. It is sectional drawing which shows the structure of the extraction gate of the unloading apparatus. It is A-A 'sectional drawing of FIG. It is B-B 'sectional drawing of FIG. It is C-C 'sectional drawing of FIG. It is a figure which shows the relationship between the electric current value of the drive motor of a bucket elevator in the unloading process by the unloading apparatus, and the transport amount of a granular material. It is a figure which shows the relationship between the electric energy of the drive motor of a bucket elevator in the unloading process by the unloading apparatus, and the transport amount of a granular material. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is a flowchart which shows the unloading process by the unloading apparatus. It is an upper top view which shows the structure of the granular material carrier ship to which the unloading apparatus which concerns on the 3rd Embodiment of this invention is applied.

  Hereinafter, a lifting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is an upper plan view showing the structure of a granular material carrier ship to which the unloading apparatus according to the first embodiment of the present invention is applied. FIG. 2 is a side sectional view showing the structure of a granular material carrier ship to which the unloading apparatus is applied. FIG. 3 is a schematic cross-sectional view in the width direction of the granular material carrier ship.

  As shown in FIGS. 1 and 2, the unloading device 100 is provided in the granular material carrier 1. For example, the unloading apparatus 100 is configured to receive granular materials such as cement, fly ash, calcium carbonate (tankal), slag, clinker, and other inorganic materials, grains, and the like loaded in the hold 2 which is a hold of the granular material transport ship 1. Bucket elevator 110 of vertical transfer means for transferring cargo such as organic material powder and the like in the vertical direction, and provided at the bottom 2a of the hold 2 and connected to the bucket elevator 110, the cargo such as powder and granular material is bucket elevator The air slider 120 of the horizontal transfer means which transfers to the lower end side of 110 in a horizontal direction is comprised.

  Here, the granular material carrier 1 includes a ballast tank 4 disposed on a hull bottom plate 3 constituting a ship bottom in this example, and a bottom plate 4a of a hold 2 that is an upper plate of the ballast tank 4, For example, four holds 2 are provided between the bow portion 6 and the stern portion 7. These holds 2 are partitioned in a watertight state in the front-rear direction of the hull by a partition wall 2b.

  The loading device of the granular material carrier 1 includes, for example, a central distribution tank 152 connected via a receiving air slide 151 for receiving the cargo (load) loaded in the hold 2 from the land to the granular material carrier 1, A distribution air slide 153 connected to the distribution tank 152, a hold loading portion 154 branched from the distribution air slide 153, and the like are provided.

  The receiving air slide 151 is disposed on both sides of the central distribution tank 152 in the upper deck 9 of the powder carrier 1. The central distribution tank 152 is disposed substantially at the center in the front-rear direction of the hull. The receiving air slide 151 is attached so as to be inclined downward toward the central distribution tank 152 side.

  Four distribution air slides 153 are provided so as to extend from the central distribution tank 152 in the direction of the bow portion 6 and the stern portion 7 and to be inclined downward in these directions from the central distribution tank 152 side. The hold loading part 154 provided at the upper part of the center distribution tank 152 and the central distribution tank 152 are connected.

  A plurality of hold loading portions 154 connected to the distribution air slide 153 are provided for each hold 2, and the gate 155 provided between the hold loading portion 154 and the distribution air slide 153 is opened. A granular material such as cement falls into the hold 2 immediately below the hold loading portion 154 and is loaded. At this time, since the powder particles fall into the hold 2 in a fluidized state, the loading surface is almost leveled.

  Since the structures of the receiving air slide 151, the distribution air slide 153, and the like are well known, detailed description thereof will be omitted here. However, the air slide is provided with a slanted canvas in a duct, for example, from below the canvas. Air is supplied to move the powder particles while fluidizing them.

  On the other hand, the holding air slider 120 constituting the unloading device 100 of the granular material carrier 1 is provided above the air slider mounting bottom plate 5 provided on the bottom plate 4a of the hold 2 as described above. Moreover, the bucket elevator 110 which comprises the unloading apparatus 100 is provided around the center of each hold | maintenance 2, and transfers the granular material transferred to the horizontal direction by the air slider 120 to a perpendicular direction from the lower end side.

  Further, as shown in FIGS. 1 and 3, the unloading device 100 includes a plurality of cellar pumps 160 arranged in the width direction of the hull below the central distribution tank 152, and upper ends of these cellar pumps 160 and bucket elevators 110. A feed air slide 161 that connects the side, a distribution pipe 160a that distributes the granular material from the feed air slide 161 to each cellar pump 160, and a transport pipe for unloading the granular material in the cellar pump 160 ( Unloading pipe) 160b.

  The air slider mounting bottom plate 5 is installed on the entire surface of the bottom portion 2a of the hold 2 in a watertight structure so that there is no leakage of powder particles from the inside of the hold 2 or intrusion of seawater from the bottom plate 4a side. The air slider 120 includes an air pipe (not shown) and a plurality of air supply valves (air slider valves) disposed in a space between the bottom plate 4a and the air slider mounting bottom plate 5.

  Air supplied from the air pipe is supplied into the air slider box of the air slider 120 through the air supply valve, and blown into the hold 2 through the air slider canvas. Air is supplied into the hold 2 via a plurality of aeration valves connected to at least a part of the air supply valve. The aeration valve is for adjusting the aeration pressure in the hold 2.

  The bucket elevator 110 is disposed at the center of the hold 2 at a location surrounded by the partition wall 2d. At the connection portion with the air slider 120, the granular material from the air slider 120 is pulled out to the bucket elevator 110. An outgoing extraction gate 130 is arranged. The extraction gate 130 includes a flow rate adjustment valve 131 that adjusts the flow rate of the granular material and a manual valve 132.

  Since the air slider 120 is disposed so as to be inclined slightly downward from the partition 2c side of the hold 2 toward the extraction gate 130, the fluidized granular material in the hold 2 is removed from the extraction gate 130. Move in the direction. As for various controls such as the operation control of the flow rate adjusting valve 131 of the extraction gate 130 and the loading / unloading processing control of the granular material from the hold 2, those described later can be applied.

  The unloading apparatus 100 according to the first embodiment configured as described above includes a bucket elevator 110 in a state where each hold 2 is surrounded by partition walls 2b, 2c, and 2d. The slider 120 and the bucket elevator 110 are connected by an extraction gate 130.

  Therefore, even if seawater enters one of the holds 2, it is possible to prevent water from entering into the other holds 2, and to improve the stability when damaged. Moreover, since the thing of the existing structure can be utilized for the air slider 120 and the bucket elevator 110, it can comprise at low cost.

  In addition, it is also possible to employ | adopt vertical transfer means, such as a vertical screw conveyor, instead of the bucket elevator 110. FIG. Moreover, what is mentioned later can be applied to various controls such as the operation control of the flow rate adjustment valve 131 of the extraction gate 130 and the loading / unloading processing control of the granular material from the hold 2.

[Second Embodiment]
FIG. 4 is an upper plan view showing the structure of the granular material carrier ship to which the unloading apparatus according to the second embodiment of the present invention is applied. FIG. 5 is a side sectional view showing the structure of the granular material carrier ship to which the unloading apparatus is applied, FIG. 6 is a block diagram showing an outline of the system configuration of the unloading apparatus, and FIG. 7 is the unloading apparatus. It is an instrumentation system diagram which shows the outline | summary of a system configuration | structure. 8 is a cross-sectional view showing the structure of the extraction gate of the unloading device, FIG. 9 is a cross-sectional view taken along the line AA ′ in FIG. 8, FIG. 10 is a cross-sectional view taken along the line BB ′ in FIG. It is CC 'sectional drawing of FIG.

  As shown in FIGS. 4 and 5, in the unloading device 200 according to the second embodiment, the bucket elevator 110 shares the partitions 2 b and 2 d that partition the two adjacent holds 2 with these holds 2. The point which is provided in this way, and the point in which the extraction gate 130 is further provided with the watertight valve 133 as a watertight chain apparatus are different from the unloading apparatus 100 which concerns on 1st Embodiment.

  That is, only by adding the watertight valve 133 to the extraction gate 130, the number of bucket elevators 110 provided in each hold 2 in the unloading device 100 according to the first embodiment can be reduced, which is simpler. A structure that can satisfy the rules of stability at the time of damage is realized with a simple structure. Other configurations of the bucket elevator 110, the air slider 120, and the like are the same as those described above, and thus description thereof is omitted here.

  As shown in FIG. 6, the unloading apparatus 200 includes, for example, an unloading operation terminal 10 for an operator or the like to instruct various operations related to unloading, an unloading control apparatus 20 that controls the entire unloading apparatus 200, A cargo handling auxiliary machine starter control device 30 for controlling starters of various auxiliary machines provided in the unloading apparatus 200 is provided.

The cargo handling operation terminal 10 includes, for example, a human interface device, and includes a control unit 11, a communication interface (hereinafter referred to as "communication I / F") 12, an input / output I / F 13, a display unit 14, and an input. Part 15. The control unit 11 includes a CPU, a RAM, a ROM, and the like, and controls various processes related to the cargo handling operation terminal 10.
The communication I / F 12 includes a communication module capable of network communication such as wired or wireless Ethernet (registered trademark) communication, and the load handling control terminal 10, the load handling control device 20 and the load handling auxiliary machine starter control device 30 are connected to the network 19. Connect through. The input / output I / F 13 connects the cargo handling operation terminal 10 to an external storage device or peripheral device.

  The display unit 14 includes a plurality of liquid crystal displays and the like, and displays various information so as to be visible. The input unit 15 includes a plurality of input devices such as a keyboard, a mouse, a trackball, and a touch panel, and is configured to be able to input operation information such as various instructions regarding an unloading operation from the operator or the like to the unloading operation terminal 10.

  The control units 21 and 31, the communication I / Fs 22 and 32 and the input / output I / Fs 23 and 33 of the cargo handling control device 20 and the cargo handling auxiliary machine starter control device 30 are the control unit 11 and the communication I / F 12 of the cargo handling operation terminal 10. Since it can be configured in the same manner as the input / output I / F 13, description thereof is omitted here. The starter circuit 34 of the cargo handling auxiliary machine starter control device 30 is connected to various cargo handling auxiliary machines via a cargo handling auxiliary machine motor (not shown), and performs control related to starting and stopping of the various cargo handling auxiliary machines. Examples of various cargo handling accessories include a compressor, a bag filter, a fan, a blower, and a regulating valve.

  The input / output I / F 33 of the cargo handling auxiliary machine starter control device 30 is connected to a rotary level meter (powder level meter) provided in the bucket elevator 110 or the like, and information detected by this level gauge is used as the cargo handling auxiliary machine. Input to the starter controller 30. The input / output I / F 33 is connected to the starter circuit 34 via a converter 35, and the converter 35 converts the current values and electric energy measurement values of various cargo handling auxiliary equipment motors, thereby controlling the control unit 31. It is set as the structure which can be used for.

  More specifically, the unloading apparatus 200 having such a system configuration is configured by instrumentation as shown in FIG. First, the bucket elevator 110 is provided with, for example, a drive motor 301 disposed on the upper end side and two level meters 302 and 303 disposed vertically on the lower end side. Level meters 302 and 303 detect the level of powder particles in bucket elevator 110.

  The extraction gate 130 includes, for example, a flow rate adjustment valve 131, a manual valve 132, and a watertight valve 133 including an electric cylinder 304 in order from the side closer to the bucket elevator 110. Here, as shown in FIGS. 8 and 9, the flow rate adjustment valve 131 includes, for example, a canning 400 having a flange portion 401 for attachment and a mount 402 for attaching the electric cylinder 304.

  The flow rate adjusting valve 131 includes a gate part 403 for opening and closing a powder particle extraction passage 490 formed in the casing 400, and a gate shaft 404 connecting the gate part 403 and the electric cylinder 304. Prepare. The gate shaft 404 is sealed and slidably attached to the casing 400 by a packing 405 attached and held by a packing presser 406.

  The flow rate adjusting valve 131 configured as described above moves the gate portion 403 up and down via the gate shaft 404 according to the operation of the electric cylinder 304, thereby increasing the opening diameter of the extraction passage 490 having a rectangular opening. adjust. Thereby, the flow rate of the granular material moving toward the bucket elevator 110 in the extraction passage 490 is adjusted by the air slider 120.

  On the other hand, the manual valve 132 includes a casing 500 having a flange portion 501 similar to that of the flow rate adjustment valve 131, and a frame 502 for attaching the handle portion 507, and further for opening and closing an extraction passage 490 in the casing 500. A gate portion 503, and a gate shaft 504 that connects the gate portion 503 and the handle portion 507 together with the screw rod 509 are provided. An air inlet 508 for supplying air into the air slider box 121 is formed in the casing 500.

  The gate shaft 504 is configured to be sealed and slidable by a packing 505 attached and held to the casing 500 by a packing presser 506. The manual valve 132 manually operates the handle portion 507 to move the gate portion 503 up and down via the gate shaft 504 to adjust the opening diameter of the extraction passage 490 having a rectangular opening.

  For this reason, the manual valve 132 is configured so that the flow rate of the granular material moving in the extraction passage 490 toward the bucket elevator 110 can be manually adjusted by the air slider 120, similarly to the flow rate adjustment valve 131. Has been. The opening / closing amount of the gate portion 503 can be visually confirmed by the opening confirmation scale 510.

  The watertight valve 133 includes a casing 520 having a flange portion 521 for attachment, and a mount 523 for attaching a pneumatic or electric cylinder portion 522, for opening and closing the extraction passage 490 in a watertight state. A gate portion 524 and a gate shaft 525 that connects the gate portion 524 and the cylinder portion 522 are provided. In addition, although the gate part 524 is comprised by the knife gate valve in this example, you may be comprised by the butterfly valve etc.

  The watertight valve 133 configured in this manner opens and closes the extraction passage 490 by moving the gate portion 524 up and down via the gate shaft 525 in accordance with the operation of the cylinder portion 522. Thereby, the extraction passage 490 can be closed and the bucket elevator 110 and the air slider 120 can be shut off in a watertight manner. The air slider box 121 is blocked by the casing 520 at the watertight valve 133.

  The extraction gate 130 is formed by watertightly connecting the casings 400, 500, and 520 of the flow rate adjusting valve 131, the manual valve 132, and the watertight valve 133 by fastening the flange portions 401, 501, and 521 with bolts and nuts. ing. In this case, each connecting portion is sealed with a sealing material or the like.

  An aeration valve 307 for adjusting the aeration pressure in the extraction passage 490 and the hold 2 is connected to the air inlet 508 of the extraction gate 130 and the air slider 120 connected to the watertight valve 133 side. For example, the number of aeration valves 307 connected to the air slider 120 corresponds to the number of air slider canvases in the hold 2.

  An air slider valve 309 connected to an air pipe 308 is connected to the aeration valve 307 of the air slider 120, and the air pipe 308 is connected to turbo blowers 310 and 311. The aeration valve 307 is also connected to the feed air slide 161.

  One turbo blower 310 is connected to a distribution air slide 153 via a loading valve 320 that is opened when loading, for example, including a pneumatic butterfly valve, and further, a lifting valve 321 and a Sarae (浚) that are opened during loading. D) It is connected to the air pipe 308 via a Sarae valve 322 that is opened during processing.

  The other turbo blower 311 is connected to an air pipe 308 via a turbo blower discharge valve 317. A pressure switch 316 is provided between the turbo blower 311 and the turbo blower discharge valve 317, and a pressure sensor 315 is provided in the air pipe 308 at the tip of the turbo blower discharge valve 317.

  Further, a roots blower 312 is connected to the air pipe 308 via a roots blower discharge valve 318, and a silencer 313 is connected via an air volume adjustment valve 314 equipped with an electric opening / closing motor 314 a and the like. The air volume adjustment valve 314 adjusts the supply amount of air supplied to the air pipe 308.

  A return pipe 331 branched from the feed air slide 161 and connected to the hold 2 is connected to the unloading chute 330 of the bucket elevator 110, and an overflow switching valve 319 is connected to the return pipe 331. ing. In addition, the measurement information of the current used and the amount of electric power of the drive motor 301 of the bucket elevator 110 is input to the cargo handling control device 20 via the converter 35 of the cargo handling auxiliary machinery starter control device 30 to control the entire cargo handling process. Used.

  12 is a diagram showing the relationship between the current value of the drive motor 301 of the bucket elevator 110 and the transport amount of the granular material in the unloading processing by the unloading apparatus 200, and FIG. 13 is the electric energy of the drive motor 301 and the granular material. It is a figure which shows the relationship with the amount of transportation. 12 and 13, the vertical axis represents the transport amount of the granular material, and the horizontal axis represents the current value and the power amount, respectively.

  As shown in FIG. 7, the unloading device 200 is controlled by the cargo handling control device 20 in accordance with the current consumption and the amount of electric power (that is, the load of the drive motor 301) of the drive motor 301 as shown in FIGS. The loading / unloading processing is executed by controlling each part of the system such as each loading / unloading machine in cooperation with the loading / unloading operation terminal 10 and the loading / unloading machine starter controller 30.

  Specifically, the unloading processing is performed as follows. 14 to 21 are flowcharts showing the unloading processing by the unloading apparatus 200. FIG. 14 shows, for example, from the start of the loading / unloading auxiliary machine to the end of the automatic loading / unloading process, and FIG. 15 shows the automatic control process of the air slider 120. FIG. 16 shows an interlock determination process, and FIG. 17 shows an automatic control process for the flow rate adjustment valve 131.

  Further, FIG. 18 shows an automatic control process of the air volume adjusting valve 314, and FIG. 19 shows an automatic initial extraction control process in the extraction gate. 20A and 20B show an automatic extraction control process, and FIG. 21 shows an automatic opening / closing control process for the aeration valve 307 and the watertight valve 133. In the processing of each figure, steps such as human operations by an operator are omitted as much as possible, but manual control can be similarly performed by incorporating such human operations.

  First, as shown in FIG. 14, the cargo handling operation terminal 10, the cargo handling control device 20, and the cargo handling auxiliary machinery starter control device 30 are powered on, and the manual valve 132 of the extraction gate 130 is opened, and then the cargo handling operation is performed. After the cargo handling is selected at the terminal 10, the automatic start of the cargo handling auxiliary equipment is selected, and waits until the cargo handling auxiliary equipment starts (N in step S100). When started (Y in step S100), automatic operation processing of the auxiliary equipment for unloading is executed (step S102).

  In this step S102, for example, a control compressor, a bag filter pulse control compressor, a bag filter pulse, a bag filter fan, a turbo blower 310, 311, a bucket elevator 110, level meters 302, 303, a product valve 320, a lift valve 321, and Unloading auxiliary machines such as the Sarae valve 322 are automatically operated. The product valve 320 and the Sarae valve 322 are closed, and the lift valve 321 is opened.

  When the automatic operation process is executed, the automatic control is started until automatic control is selected and started as the control mode of the air slider 120 at the bottom 2a of the hold 2 at the cargo handling operation terminal 10 (N in step S104). If it is (Y in Step S104), automatic control of the flow rate adjustment valve 131 is started (Step S106).

  In this step S106, the flow rate adjusting valve 131 in the extraction gate 130 on the hold 2 side, which is set by the operator to operate the cargo handling operation terminal 10 among the hold 2 adjacent to each other with the bucket elevator 110 interposed therebetween, for example. Is automatically controlled.

  When automatic control of the flow rate adjusting valve 131 is started, automatic control of the air volume adjusting valve 314 is started (step S108) and automatic control of the air slider valve 309 and the watertight valve 133 at the bottom 2a of the hold 2 is started (step S108). S110). In step S108, the aeration valve 307 at the bottom 2a of the hold 2 may be shared by the adjacent holds 2. In step S110, the turbo blower discharge valve 317, the hold source valve (not shown), and the aeration valve 307 below the extraction gate 130 are also automatically controlled.

  Thus, when the automatic control of each part is started, the automatic unloading process is executed (step S112), and the status of the unloading apparatus 200 becomes “automatic unloading”. Thereafter, it is determined whether or not to stop the automatic control of the air slider 120 at the bottom 2a of the hold 2 is selected at the cargo handling operation terminal 10 (step S114), and when it is determined that the stop is not selected (in step S114) N) shifts to step S112, and the automatic unloading processing is continued.

  On the other hand, when it is determined that the stop has been selected (Y in step S114), the automatic control of the air slider valve 309 and the watertight valve 133 is stopped (step S116), and the automatic control of the flow rate adjustment valve 131 is stopped (step S118). ). In step S116, the automatic control of the turbo blower discharge valve 317, the hold source valve (not shown) and the aeration valve 307 below the extraction gate 130 is also stopped.

  Further, the automatic control of the air volume adjusting valve 314 is stopped (step S120), and the manual valve 132 of the extraction gate 130 is closed to determine whether or not the automatic unloading processing has been completed (step S122). ). If it is determined that the automatic unloading process has not been completed (N in Step S122), it is determined whether there is another unloading by operating the unloading operation terminal 10 (Step S124). If it is determined that there is (Y in step S124), the process proceeds to step S104 and the subsequent processing is repeated.

  On the other hand, when it is determined that the automatic unloading process has been completed (Y in step S122), and when it is determined that there is no other unloading process (N in step S124), the loading / unloading auxiliary machine 10 After the automatic operation stop is selected, the automatic operation of the unloading auxiliary machine is stopped (step S126), and a series of processes according to this flowchart ends. If the control compressor is of a type that does not automatically stop, after step S126, this automatic stop is selected at the cargo handling operation terminal 10, and the cargo handling operation terminal 10, the cargo handling control device 20, and the cargo handling auxiliary machine starter control are performed. The power supply of the device 30 may be turned off.

  As shown in FIG. 15, the automatic control processing of the air slider 120 determines whether or not the interlock is OK when the status is “automatic (or manual) unloading” (step S200), If it is determined that it is okay (Y in step S200), it is determined whether or not the cargo type such as the granular material to be unloaded is the same as the cargo type loaded in the hold (hold 2). (Step S202).

  The interlock determination process in step S200 will be described later. In addition, the product type determination process in step S202 determines, for example, whether or not the information about the cargo type previously input at the cargo handling operation terminal 10 matches the information about the type of cargo input when the cargo is handled. Is done. If it is determined that the types are the same (Y in step S202), an automatic control process for the air slider 120 is executed (step S206), and the series of processes in this flowchart is terminated.

  On the other hand, when it is determined that the interlock is not okay (N in step S200) and when it is determined that the types are not the same (N in step S202), the automatic control of the air slider 120 is stopped (step S204). Then, a series of processes according to this flowchart is finished.

  The automatic control process may be executed after automatic control is selected as the control mode at the cargo handling operation terminal 10 in the previous stage of step S206. Similarly, the automatic control is stopped for the same product type. (Yes in step S202), it may be executed after stopping the automatic control is selected on the cargo handling operation terminal 10.

  As shown in FIG. 16, the interlock determination process is performed based on the following determinations when the status is “automatic (or manual) unloading”. That is, it is determined whether an emergency stop button or the like (not shown) has been pressed to make an emergency stop (step S300), whether the bucket elevator 110 has stopped abnormally (step S302), and driving of the bucket elevator 110 is determined. It is determined whether or not the motor 301 is overloaded (step S304).

  Further, it is determined whether or not the turbo blowers 310 and 311 have stopped abnormally (step S306), and it is determined whether or not the level meters 302 and 303 have detected an abnormality (step S308). The order of these steps S300 to S308 may be changed. If it is determined that an abnormality is detected that is overloaded or stopped due to these determinations (Y in steps S300 to S308), the process proceeds to step S300. And repeat the decision.

  On the other hand, when it is determined that these are not stopped, not overloaded, or no abnormality is detected (N in Steps S300 to S308), the interlock is OK (Step S310). A series of processing ends. In this interlock determination process, other determination items may be added as necessary. Note that the determination in step S308 is performed by determining that an abnormality has been detected when the upper limit of the level meter is exceeded, for example.

  As shown in FIG. 17, in the automatic control process of the flow rate adjustment valve 131 of the extraction gate 130, when the status is "Unloading auxiliary machine automatic operation", the unloading type is the same as the cargo type as described above. (Step S400), wait until it is determined that the same (N in Step S400), and if it is determined that it is the same (Y in Step S400), the interlock is OK. Whether or not (step S402).

  Wait until it is determined that the interlock is OK (N in Step S402), and if it is determined that it is OK (Y in Step S402), the cargo handling operation terminal 10 automatically controls the flow rate adjustment valve 131 as the control mode. Is selected and automatic control processing of the flow rate adjustment valve 131 is executed (step S404).

  When the automatic control process is executed, it is determined whether or not the interlock is OK (step S406). If it is determined that the interlock is OK (Y in step S406), the unloading type is the same as the cargo type. Whether or not (step S408). If it is determined that they are the same (Y in step S408), it is determined whether automatic (or manual) control of the air slider 120 is stopped (step S410), and it is determined that automatic control is stopped. In the case (Y in step S410), the valve opening degree of the flow rate adjusting valve 131 is determined based on the previously input transport amount for the unloading and the current value from the ammeter 111 (and the electric energy calculated based on this). Is calculated (step S412).

  And based on the calculated valve opening degree, the valve opening degree of the flow rate adjustment valve 131 is set (step S414), the process proceeds to step S406 and the subsequent processing is repeated. On the other hand, when it is determined that the interlock is not okay (N in step S406), when it is determined that the types are not the same (N in step S408), and when it is determined that the automatic control is stopped (step S410). N) sets the valve opening degree of the flow rate adjustment valve 131 to 0 (step S416), and ends a series of processing according to this flowchart. The valve opening can be set by inputting an arbitrary value at the cargo handling operation terminal 10.

  As shown in FIG. 18, the automatic control processing of the air volume adjusting valve 314 is automatically controlled as the control mode of the air volume adjusting valve 314 at the cargo handling operation terminal 10, for example, when the status is “Unloading auxiliary machine automatic operation”. Is selected and the automatic control is performed (N in Step S500). When the automatic control is performed (Y in Step S500), the aeration pressure in the hold 2 and the flow rate adjustment based on the information from the pressure sensor 315 are adjusted. The valve opening degree of the air volume adjusting valve 314 is calculated according to the current valve opening degree of the valve 131 (step S502).

  After calculating the valve opening, the valve opening of the air volume adjusting valve 314 is set (step S504), and a series of processing according to this flowchart is terminated. In addition, the valve opening degree of the air volume adjusting valve 314 set in step S504 is set to be the same as the valve opening degree of the flow rate adjusting valve 131, for example. In addition, the valve opening can also be set by inputting an arbitrary value at the cargo handling operation terminal 10.

  As shown in FIG. 19, in the automatic initial extraction control process of the granular material in the extraction gate 130, when the status is “during automatic control” of the air slider 120, first, the air slider 120 is automatically controlled. It is determined whether or not (step S600). When it is determined that the automatic control is not performed (N in step S600), the series of processes according to this flowchart is terminated.

  If it is determined that automatic control is performed (Y in step S600), it is determined whether or not the interlock is OK (step S602). If it is determined that the interlock is OK (Y in step S602), It is determined whether or not the cargo type is the same as the cargo type (step S604). When it is determined that they are the same (Y in Step S604), it is determined whether or not the flow rate of the granular material is smaller than a preset upper limit set value (high flow rate set value [t / h]) (Step S604). S606).

  When it is determined that the flow rate is less than the upper limit set value (Y in step S606), the air slide valve 309 at the lower part of each hold 2 is opened, and the powder particles are automatically initialized via the extraction gate 130. Extraction is started (step S608). Thereafter, it is determined whether or not the flow rate of the granular material is smaller than a preset lower limit set value (low flow rate set value [t / h]) (step S612).

  When it is determined that the flow rate is less than the lower limit set value (Y in step S612), wait until a preset automatic extraction confirmation time elapses (N in step S614), and when the automatic extraction confirmation time has elapsed. (Y in step S614), the automatic initial extraction is stopped (step S616), the air slide valve 309 is closed, and the series of processing according to this flowchart ends. When the automatic initial extraction is started, as a parallel process, it waits until a preset initial extraction setting time elapses (N in step S610), and when the initial extraction setting time elapses (Y in step S610). Then, the process proceeds to step S616.

  When it is determined that the interlock is not okay (N in step S602), when it is determined that the unloading type is not the same as the cargo type (N in step S604), and the flow rate is not less than the upper limit set value. If it is determined that the value is equal to or greater than the upper limit set value (Y in step S606), the air slider valve 309 is closed (step S618), the process proceeds to step S600, and the subsequent processing is repeated. In addition, when it is determined that the flow rate is not less than the lower limit set value (greater than the lower limit set value) (N in step S612), the process proceeds to step S600.

  As shown in FIG. 20A and FIG. 20B, the automatic extraction control process waits until the automatic initial extraction by the automatic initial extraction process shown in FIG. 19 is completed (N in step S700) and is completed (in step S700). Y) It is determined whether or not the air slider 120 is automatically controlled (step S702).

  If it is determined that automatic control is not being performed (N in step S702), all the air slider valves 309 are fully closed (step S750), and the series of processing according to this flowchart ends. If it is determined that it is automatically controlled (Y in step S702), it is determined whether or not the interlock is OK (step S704). If it is determined that it is OK (Y in step S704), It is determined whether the cargo type is the same as the cargo type (step S706).

  If it is determined that the varieties are the same (Y in step S706), it is determined whether or not the flow rate of the powder is smaller than a preset upper limit value (step S708). If it is determined that the flow rate is less than the upper limit set value (Y in step S708), the opening degree of the air slider valve 309 at the lower part of each hold 2 is opened at the Nth stage opening degree (step S708). S710), it is determined whether or not the number of execution times of the automatic sequence control is less than the number of times obtained by subtracting 1 from the preset automatic sequence setting number (that is, whether or not the automatic sequence control is the final time) (step S712). Note that N in the Nth stage in step S710 indicates the current stage number of stage control, and the number of automatic sequence settings in step S712 is set to 2 in the initial setting. The automatic sequence control is counted as one round after 1 to N stages.

  On the other hand, when it is determined that the interlock is not okay (N in step S704), when it is determined that the types are not the same (N in step S706), and the flow rate is not less than the upper limit set value (greater than the upper limit set value). (N in Step S708), the valve opening of the air slider valve 309 is closed at the opening of the Nth stage (Step S728), and the process proceeds to Step S702. Repeat the process.

  If it is determined that the number of times of execution of automatic sequence control is less than the number of times obtained by subtracting 1 from the number of times of automatic sequence setting set in advance (Y in step S712), whether or not the flow rate is equal to or lower than a preset lower limit setting value Is determined (step S714). If it is determined that the flow rate is not less than or equal to the lower limit set value (more than the lower limit set value) (N in step S714), the process proceeds to step S702.

  When it is determined that the number of times of execution of automatic sequence control is not less than (or more than) the number of times that 1 is subtracted from the number of times of automatic sequence setting set in advance (N in step S712), the flow rate of the granular material is set in advance. It is determined whether it is equal to or less than the zero set value (zero flow rate set value) (step S730). When it is determined that the flow rate is not equal to or less than the zero set value (more than the zero set value) (N in step S730), the process proceeds to step S702.

  When it is determined that the flow rate is equal to or lower than the lower limit set value (Y in step S714) and when it is determined that the flow rate is equal to or lower than the zero set value (Y in step S730), wait until the automatic extraction confirmation time elapses. (N in Step S716) When the automatic withdrawal confirmation time has elapsed (Y in Step S716), the valve opening stage in the open state of the air slider valve 309 is incremented (N = N + 1) (Step S718).

  Then, it is determined whether or not the current stage number of the stage control is the maximum stage number (N = Nmax?) (Step S720). If it is determined that it is not the maximum stage number (N in step S720), the process proceeds to step S702. Transition. If it is determined that the number of stages is the maximum (Y in Step S720), the number of executions of the automatic sequence control is incremented (Step S722), and it is determined whether the number of executions of the automatic sequence control is the same as the number of times of automatic sequence setting. (Step S724).

  If it is determined that the automatic sequence control execution number is not the same as the automatic sequence setting number (N in step S724), the process proceeds to step S702. If it is determined that they are the same (Y in step S724), the automatic sequence control is completed and the Sarae process is started (step S726). The Sarae process is a process of squeezing so that no powder particles remain in the hold 2, and is performed by appropriately controlling aeration by air from the aeration valve 307.

  Thereafter, it is determined again whether or not the air slider 120 is automatically controlled (step S732). If it is determined that the air slider 120 is not automatically controlled (N in step S732), the process proceeds to step S750. If it is determined that the control is automatic (Y in step S732), it is determined whether the interlock is okay (step S734). If it is determined that the interlock is okay (Y in step S734), It is determined whether or not the cargo type is the same as the cargo type (step S736).

  If it is determined that the varieties are the same (Y in step S736), it is determined whether the flow rate of the granular material is smaller than a preset upper limit setting value (step S738). When it is determined that the flow rate is less than the upper limit set value (Y in step S738), all the air slider valves 309 are fully opened (step S740), and the flow rate of the granular material is less than or equal to a preset zero set value. It is determined whether or not there is (step S742).

  On the other hand, if it is determined that the interlock is not okay (N in step S734), if the product is determined not to be the same (N in step S736), and the flow rate is not less than the upper limit set value (above the upper limit set value). (N in Step S738), all the air slider valves 309 are fully closed (Step S748), the process proceeds to Step S732, and the subsequent processing is repeated.

  If it is determined that the flow rate is not less than or equal to the zero set value (more than the zero set value) (N in step S742), the process proceeds to step S732. If it is determined that the flow rate is equal to or less than the zero set value (Y in step S742), the process waits until the automatic extraction confirmation time elapses (N in step S744), and when the automatic extraction confirmation time elapses (in step S744). Y) All the air slider valves 309 are fully closed (step S746), a series of processing according to this flowchart is terminated, and automatic extraction is completed.

  As shown in FIG. 21, the automatic opening / closing control processing of the aeration valve 307 (including the air slider valve 309) and the watertight valve 133 in the extraction gate 130 is performed when the status is “automatic (or manual) unloading”. Then, it is determined whether or not the control of the air slider 120 is stopped (step S800). If it is determined that the control is stopped (Y in step S800), the watertight valve 133 and the aeration valve 307 are closed (step S800). S812), a series of processing according to this flowchart is terminated.

  If it is determined that the control of the air slider 120 is not stopped (N in Step S800), it is determined whether or not the interlock is OK (Step S802), and if it is determined that it is OK (Step S802). Y) determines whether or not the unloading type is the same as the cargo type (step S804).

  If it is determined that the varieties are the same (Y in step S804), it is determined whether the flow rate of the granular material is smaller than a preset upper limit setting value (step S806). When it is determined that the flow rate is less than the upper limit set value (Y in step S806), the watertight valve 133 and the aeration valve 307 are each opened (step S808), the process proceeds to step S800, and the subsequent processing is repeated.

  On the other hand, when it is determined that the interlock is not okay (N in step S802), when it is determined that the types are not the same (N in step S804), and the flow rate is not less than the upper limit set value (above the upper limit set value). (N in Step S806), the watertight valve 133 and the aeration valve 307 are closed (Step S810), and the process proceeds to Step S800. The watertight valve 133, the aeration valve 307, the air slider valve 309, etc. can be manually controlled to open and close via the cargo handling operation terminal 10.

  Thus, the unloading apparatus 200 according to the second embodiment can achieve the same operational effects as the unloading apparatus 100 according to the first embodiment, and can reduce the number of bucket elevators 110. Therefore, it can be constructed at a lower cost while improving the stability at the time of damage.

[Third Embodiment]
FIG. 22 is an upper plan view showing the structure of a granular material carrier ship to which the unloading apparatus according to the third embodiment of the present invention is applied. As shown in FIG. 22, the unloading device 250 according to the third embodiment includes four bucket elevators 110 as illustrated in FIGS. 4 and 5, and includes four bucket elevators 110. In the part where the corners of the partition walls 2b, 2e of the adjacent hold 2 are concentrated, these four holds 2 are provided so as to be shared, and eight holds 2 of the granular material carrier 1 are provided. This is different from the unloading device 200 according to the second embodiment.

  By being configured in this way, the number of bucket elevators 110 provided in the above-described manner between two adjacent holds 2 in the lifting device 200 according to the second embodiment can be further reduced. It becomes possible to improve the stability at the time of damage with a simpler configuration.

[Other Embodiments]
In the above-described embodiment, when one bucket elevator 110 is provided for one hold 2, each hold 2 can be partitioned in a watertight state without providing the watertight valve 133 in the extraction gate 130. In the case where one bucket elevator 110 is provided for two or four of the plurality of holds 2, the watertight valve 133 is provided in the extraction gate 130. One bucket elevator 110 may be provided for a plurality of holds 2.

1 Granule carrier 2 Funakura (hold)
2a bottom 2b bulkhead 3 hull bottom plate 4 ballast tank 4a bottom plate 5 air slider mounting bottom plate 6 bow 7 stern 9 upper deck 10 cargo handling operation terminal 20 cargo handling control device 30 cargo handling auxiliary machine starter control device 100 lifting device 110 bucket Elevator 120 Air slider 130 Extraction gate 131 Flow rate adjustment valve 132 Manual valve 133 Watertight valve 307 Aeration valve 309 Air slider valve 314 Air volume adjustment valve

Claims (5)

It is installed in a granular material carrier ship that loads and conveys a granular material in a cargo compartment partitioned into a plurality of compartments, and is an unloading device that unloads the granular material from the cargo space,
Vertical transport means for transporting the powder particles in the hold vertically partitioned by a partition wall so as to be watertight;
A horizontal transfer means that is provided at the bottom of the hold and connected to the vertical transfer means, and horizontally transfers powder particles in the hold toward the lower end side of the vertical transfer means;
The vertical transfer means is arranged for each hold,
The said horizontal transfer means is arrange | positioned so that it can be watertight for every said cargo hold. The lifting apparatus characterized by the above-mentioned. It is installed in a granular material carrier ship that loads and conveys a granular material in a cargo compartment partitioned into a plurality of compartments, and is an unloading device that unloads the granular material from the cargo space,
Vertical transport means for transporting the powder particles in the hold vertically partitioned by a partition wall so as to be watertight;
A horizontal transfer means that is provided at the bottom of the hold and connected to the vertical transfer means, and horizontally transfers powder particles in the hold toward the lower end side of the vertical transfer means;
The vertical transfer means is arranged in the partition wall of at least two adjacent cargoes so as to be shared by these cargoes,
The horizontal transfer means is arranged to be watertight for each hold,
The connection part of the said vertical transfer means and the said horizontal transfer means is connected so that obstruction | occlusion is possible by watertight means. The vertical transfer means comprises a vertical bucket elevator or a vertical screw conveyor,
The said horizontal transfer means consists of air sliders. The lifting apparatus of Claim 1 or 2 characterized by the above-mentioned. Further comprising control means for controlling the supply amount of the granular material in the hold to the vertical transfer means,
The unloading apparatus according to claim 3, wherein the control means controls the supply amount by adjusting an air volume of the air slider based on a current value or an electric energy of a drive motor of the vertical transfer means. . The control means includes
Control so that the water-tight means is always fully closed except when unloading the granular material,
The unloading apparatus according to claim 4, wherein when the powder is unloaded, the watertight means is controlled to be fully closed if any of the holds is damaged.

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