JP6298375B2 - Dispensing management method and dispensing management system for bulk handling equipment - Google Patents

Description

  The present invention relates to a payout management method and a payout management system in a bulk handling facility that unloads bulk objects in a cargo hold with a pneumatic unloader and pays them to a transport vehicle.

  For bulk handling equipment that unloads bulk goods in the hold with a pneumatic unloader (PUL), the PUL unloads the bulk goods in the hold to a hopper, and from the hopper to a transport vehicle such as a dump truck. There is a delivery vehicle in which a delivery vehicle loaded with loose objects travels to a silo in the facility to convey the loose objects.

  In such a bulk handling facility, it is necessary to reciprocate the transport vehicle between the hopper and the silo, and the transport vehicle that has returned to the hopper side needs to wait for payout.

JP 2013-159468 A

  By the way, since the PUL is operated with a fixed payout amount, when the unloading of the PUL and the payout speed to the transport vehicle do not match, for example, the PUL has a small payout amount, and the transport vehicle waits for the discharge of the roses. When there are many (hereinafter referred to as standby vehicles), the standby vehicles had to wait for a long time until the turn came. In addition, when the amount of payout is large and there is no waiting vehicle, when the hopper loading level becomes the highest, the cargo handling must be stopped, and it takes time to stop and restart the PUL, and there is a problem that energy is lost. .

  Accordingly, an object of the present invention is to provide a payout management method and a payout management system in a bulk handling facility that can match the speed of unloading and payout and improve the efficiency from unloading to transporting to a silo.

  In order to achieve the above-described object, the present invention unloads loose objects in a cargo hold with a pneumatic unloader and pays them out to a transport vehicle that reciprocates between rose storage silos from a hopper provided at a payout position. A method for managing a delivery in a bulk handling facility for monitoring a standby state of a standby vehicle waiting for the discharge of the loose article, and measuring an unloading capacity at the pneumatic unloader, The unloading capacity is adjusted to match the unloading capacity.

  According to the present invention, the speed of unloading and discharging can be matched, and the efficiency from unloading to transporting to a silo can be improved.

It is explanatory drawing of the payout management system in the bulk handling equipment which concerns on one embodiment of this invention. It is a side view of a pneumatic unloader. It is a plane explanatory view of bulk handling equipment. It is explanatory drawing of a measurement sensor. It is explanatory drawing of the measurement sensor which concerns on other embodiment. It is a flowchart explaining the discharge | payout control of a rose thing.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIGS. 1 and 3, the bulk handling facility 1 includes a mooring shore 3 on which a ship 2 is moored, a PUL 4 provided on the mooring shore 3, a bulk storage silo 5 for storing roses, and a PUL 4. , A transport path 6 laid between the bulk storage silos 5, a plurality of transport vehicles 7 for loading the bulk goods unloaded at the PUL 4 and transporting the bulk goods to the bulk storage silo 5, A vehicle monitoring sensor 8 that monitors the standby state of the standby vehicle 7a that waits for payout, a weighing sensor 9 that measures the unloading ability of loose objects at the PUL4, and a lifting capacity that matches the standby state and the lifting capacity of the standby vehicle 7a. And a control device 10 for adjusting the control.

  As shown in FIGS. 1 and 2, the PUL 4 is conveyed by a vertical pipe 12 that extends perpendicularly to the bulk material in the hold 2 a and has a suction nozzle 11 for sucking the bulk material at the lower end, and the vertical pipe 12. A receiver tank 13 that separates the loose matter from the suction flow, a suction pump 14 that holds the interior of the receiver tank 13 at a negative pressure, a suction pipe 15 that connects the suction pump 14 and the receiver tank 13, and a suction pipe 15. An atmospheric intake valve 15V that controls the negative pressure in the receiver tank 13, an in-machine conveyor 16 that receives a loose object from the receiver tank 13 and transfers it to the vicinity of the payout position U, and a loose object provided in the payout position U from the in-machine conveyor 16 And a hopper 17 for paying out to the loading platform of the transport vehicle 7.

  The vertical tube 12 is formed to be freely stretchable. The vertical pipe 12 is connected to the receiver tank 13 via a horizontal pipe 18. The horizontal pipe 18 is formed to be extendable and retractable. One end of the horizontal pipe 18 is pivotally connected to the upper end of the vertical pipe 12 via a swing joint 19, and the other end is connected to the ball joint 20 at the center in the vertical direction of the receiver tank 13. It is connected through a lift. The horizontal pipe 18 extends along a boom 21 that can be raised and lowered, and is supported by a wire 22 via the boom 21. The wire 22 is connected to the tip end side of the boom 21, and the boom 21 is lifted up and down freely. The wire 22 is wound around the hoisting device 24 through the top of the mast portion 23 of the receiver tank 13, and the unwinding length is adjusted by the hoisting device 24. Further, the boom 21 is provided with a horizontal carriage 43 that supports the swing joint 19 so as to be able to travel in the longitudinal direction of the boom 21. The horizontal carriage 43 is provided with a vertical telescopic device 44 for extending and lowering the suction nozzle 11 by expanding and contracting the vertical pipe 12. The vertical telescopic device 44 is capable of winding and unwinding the wire 45, and the lower end of the vertical tube 12 or the suction nozzle 11 is connected to the tip of the wire 45. The vertical telescopic device 44 is formed so that it can be operated by an operator, and is also operated by the control device 10.

  The suction pump 14 is driven by an inverter (not shown) so that the number of rotations is variable. The inverter is controlled by the control device 10 so that the number of rotations of the suction pump 14 is adjusted.

  The receiver tank 13 is formed in a container shape extending vertically, and separates the rose from the suction flow by gravity. A bug filter (not shown) is provided at the upper part of the receiver tank, and a rotary feeder 25 is provided at the lower end of the receiver tank 13. The rotary feeder 25 pays out loose articles to the in-machine conveyor 16 while maintaining the negative pressure in the receiver tank 13.

  As shown in FIG. 4, the in-machine conveyor 16 is a chain conveyor. The in-machine conveyor 16 includes sprockets 26 provided at both ends, an endless chain 27 spanned between the sprockets 26, and blades 28 attached to the endless chain 27 at a predetermined pitch.

  As shown in FIGS. 1 and 2, the pair of hoppers 17 are arranged adjacent to each other so that the loose objects can be paid out to the two transport vehicles 7 at the same time. Further, a gate 29 whose opening degree can be adjusted is provided at the lower end of the hopper 17 so that the dispensing flow rate can be adjusted.

  As shown in FIG. 3, the rose storage silo 5 is disposed away from the PUL 4. Moreover, the loose article storage silo 5 has a loose article input unit 30 for receiving a loose article from the transport vehicle 7.

  The conveyance path 6 includes an outward path 6 a extending from the payout position U of the PUL 4 to the loose article input section 30 and a return path 6 b returning from the loose article input section 30 to the discharge position U. The return path 6b is provided with a parking / stop area 41 for the transport vehicle 7 to temporarily leave the transport work and park or stop. The parking / stopping area 41 is formed so that a plurality of transport vehicles 7 can park and stop simultaneously.

  The transport vehicle 7 is a dump truck. There are a plurality of types of transport vehicles 7 having different maximum loading amounts. For example, the conveyance vehicle 7 has a maximum loading capacity of 10 tons and a tonnage of 15 tons. In addition, the transport vehicle 7 and the control device 10 are provided with a communication device 42. The communication device 42 includes a transmitter 42 a that is provided in the control device 10 and outputs an instruction to the transport vehicle 7, and a receiver 42 b that is provided in the transport vehicle 7 and receives an instruction from the control device 10. The transport vehicle 7 is provided with an acoustic device (not shown) and a display device (not shown) for transmitting instructions received by the receiver 42b to the driver. Note that the communication device 42 may be capable of bidirectional communication between the control device 10 and the transport vehicle 7. In this case, when the transport vehicle 7 leaves the transport work due to a trouble or the like, the fact can be communicated to the control device 10, and the transport work can be performed more efficiently.

  As shown in FIG. 1, the vehicle monitoring sensor 8 is provided on the return path 6 b near the payout position U. The vehicle monitoring sensor 8 includes an optical reader that reads code information such as a bar code and a QR code (registered trademark) in a non-contact manner. Specifically, all the transport vehicles 7 in the bulk handling facility 1 are provided with an identification label (not shown) in which an identification number is preliminarily described as code information. The identification number of the transport vehicle 7 is read from the above. The vehicle monitoring sensor 8 is not limited to the optical reading device. For example, the vehicle monitoring sensor 8 may be an IC card reader or the like. In this case, the transport vehicle 7 may be provided with a non-contact type and remote type IC card (not shown) in which an identification number or the like is recorded.

  The weighing sensor 9 measures the flow rate of the bulk material transferred from the hold 2a to the hopper 17 as the unloading capacity of the PUL4. The weighing sensor 9 is an impact meter and is provided at the exit of the in-machine conveyor 16. The weighing sensor 9 is rotatably provided on the wall of the passage where the falling object falls through the pin 31 and receives the falling plate 32 that receives the falling object from the in-machine conveyor 16 and measures the force acting on the receiving plate 32. A load cell 33 is provided, and the unloading amount of the PUL is measured from the force acting on the receiving plate 32 per unit time. The measuring sensor 9 is not limited to this. For example, as shown in FIG. 5, the weighing sensor 9 may be composed of a Doppler type ultrasonic flowmeter that emits ultrasonic waves to falling falling objects and measures the flow rate from the amount of frequency shift of the reflected wave. Of course, other methods may be used.

  The control device 10 receives the measured values of the vehicle monitoring sensor 8 and the weighing sensor 9, and controls the gate 29, the vertical telescopic device 44, and the suction pump 14 based on the measured values. The control device 10 is connected to an input device 34 for inputting physical properties such as the shape, specific gravity (apparent specific gravity), and angle of repose of a loose object. Specifically, the input device 34 is formed so as to be able to select and input the type of rose by pressing a button or the like. Further, the control device 10 includes a physical property storage unit 35 in which physical properties of a plurality of types of roses are digitized and stored, and correspondence between identification numbers of all the transport vehicles 7 in the bulk handling facility 1 and the maximum load capacity. It has the vehicle memory | storage part 36 by which the relationship was memorize | stored beforehand.

  The control device 10 is basically based on unloading with an appropriate efficiency according to the physical properties of the rose, and the number of rotations of the suction pump 14, the opening of the air intake valve 15V, and the vertical according to the physical properties of the rose The height of the suction nozzle 11 is controlled by the telescopic device 44. Since the unloading capacity of the PUL 4 varies greatly depending on the physical properties of the roses, the number of rotations of the suction pump 14 and the atmospheric suction based on the information of the roses from the physical property storage unit 35 and the actual amount of unloading from the weighing sensor 9 The opening degree of the valve 15V and the height of the suction nozzle 11 by the vertical expansion / contraction device 44 are optimized. Further, the control device 10 obtains a payout amount to be paid out from the hopper 17 to the transport vehicle 7 based on the information of the transport vehicle 7 that is waiting from the vehicle storage unit 36.

  At this time, if the current unloading capacity of the PUL4 and the payout amount obtained from the standby state of the standby vehicle 7a do not match, the control device 10 controls the unloading capacity so as to match them, or the standby vehicle 7a The standby state is adjusted, or both the unloading capacity and the standby state of the standby vehicle 7a are controlled and adjusted.

  That is, when there are many standby vehicles 7a, the control device 10 controls the number of rotations of the suction pump 14, the opening degree of the atmospheric suction valve 15V, and the height of the suction nozzle 11 by the vertical telescopic device 44 based on the physical properties of the roses. Then, the unloading amount and the payout amount are matched by increasing the capability of the PUL4 within the range of the maximum capacity so as to match the current unloading capability with the payout amount obtained from the standby state. Further, when the number of the waiting vehicles 7a is small, the rotational speed of the suction pump 14, the opening degree of the atmospheric intake valve 15V, and the height of the suction nozzle 11 are controlled so as to reduce the current unloading capacity, so that the PUL 4 is not suspended. Match the amount of unloading with the amount of payout.

  After the unloading amount and the payout amount are matched in this manner, the payout from the hopper 17 to the transport vehicle 7 may be made by adjusting the opening of the gate 29 in accordance with the properties of the rose.

  Since the control device 10 can determine the unloading capacity of the PUL4 based on the physical properties of the unloading rose, the appropriate number of transport vehicles that reciprocate between the hopper 17 and the unloading storage silo can be obtained from the unloading amount of the PUL4. Therefore, unloading and paying out in which the unloading amount and the payout amount are matched can be performed by determining the appropriate number of transport vehicles in advance.

  Further, the reciprocation time between the hopper and the bulk storage silo by the transport vehicle 7 is not constant, and the standby time can be adjusted by adjusting the opening of the gate 29 of the hopper 17 even when the standby vehicle 7a varies.

  Next, a control flow of the control device 10 will be described.

  As shown in FIG. 1 and FIG. 6, in the control of paying out loose articles, first, in step S <b> 1, an input from the input device 34 is awaited. The physical properties are acquired from the physical property storage unit 35. The physical properties are quantified, and are used to adjust the flow rate of a loose material, the degree of opening of the gate 29 and the opening time of the gate 29, which will be described later.

  Thereafter, in step S2, the PUL 4 is operated with a suction force corresponding to the physical properties of the rose. Since PUL4 sucks a rose together with air, an efficient mixing ratio (ratio of rose to air) and suction force differ depending on the specific gravity and shape of the rose.

  Thereafter, the flow rate of the loose material is acquired from the weighing sensor 9 in step S3. In PUL4, the flow rate of loose objects always fluctuates. For example, when the loose object in the hold 2a is sucked and reduced, and the suction nozzle 11 is separated from the loose object, the flow rate of the loose object is reduced. In addition, when the rose is biomass (for example, sawdust-like wood hardened in a pellet form), the rose may break and become smaller in PUL4. At this time, the flow rate of the roses increases.

  In addition, the standby number is acquired in step S4, and the maximum load amount is acquired in step S5. The number of standby units is acquired by reading the identification number from the identification label of the transport vehicle 7 and setting the number of successful readings as the standby number. The maximum load amount is acquired by referring to the vehicle storage unit 36 for the identification number read in step S4.

  Thereafter, in step S6, it is determined whether or not the flow rate of the loose article is excessive with respect to the standby number. If it is excessive (Yes), the flow rate of the loose article is decreased in step S7 so that the flow rate of the loose article is within an appropriate range with respect to the standby number. Specifically, the vertical expansion / contraction device 44 or the inverter motor of the suction pump 14 is controlled so that the flow rate of loose objects is reduced. For example, when the flow rate of the loose article is decreased by controlling the vertical expansion / contraction device 44, the wire 45 is wound up and the suction nozzle 11 is raised. When the suction nozzle 11 is separated from the loose object in the hold 2a, the ratio of the loose object to the air sucked into the suction nozzle 11 is reduced, and the flow rate of the loose object is reduced. Further, which of the vertical telescopic device 44 and the inverter motor is controlled is determined according to the operating state of the PUL4. For example, when the flow rate of the loose object is reduced in a state where the height of the suction nozzle 11 with respect to the loose object in the hold 2a is close to the upper limit, the rotational speed of the suction pump 14 is decreased. On the other hand, when the flow rate of the loose object is reduced in a state where the rotation speed of the suction pump 14 is close to the lower limit, the vertical expansion / contraction device 44 is controlled to raise the suction nozzle 11.

  Thereafter, in step S8, the discharge flow rate is reduced in accordance with the flow rate of the loose article. More specifically, the opening degree of the gate 29 is decreased in accordance with the physical properties of the roses so that the discharge flow rate becomes the same as the flow rate of the roses. For example, elongated roses are less likely to pass through the gate 29 than spherical roses. For this reason, when the rose is in an elongated shape, the opening of the gate 29 is more open than when a spherical rose is handled.

  Moreover, the conveyance vehicle 7 is called using the communication apparatus 42 in step S9. At this time, the number of the transport vehicles 7 to be called is the number that is insufficient with respect to the maximum flow rate according to the physical properties of the loose objects in step S2. Thereby, the unloading ability and the conveyance ability can be matched in a state where the unloading ability of the PUL4 is maximized. Thereafter, the process returns to step S3. However, after calling the transport vehicle 7 in step S9, even when the process reaches step S9 again, the other transport vehicles 7 are not called until all the transport vehicles 7 that have been called arrive. Specifically, step S9 is skipped and not executed until the identification number of the called transport vehicle 7 is read in step S4.

  Further, when it is not excessive in Step S6 (No), it is determined in Step S10 whether or not the flow rate of loose items is excessive with respect to the standby number. If it is too small (Yes), the flow rate of the rose is increased in step S11 so that the flow rate of the rose is within an appropriate range for the number of standby units, and the discharge flow rate is changed to the flow rate of the rose in step S12. Increase together. Thereafter, the process returns to step S3. Moreover, the conveyance vehicle 7 which returns to the payout position U from the rose article input part 30 stops at the parking stop area 41 until there is a call. By not calling the transport vehicle 7, the number of standby units can be reduced.

  If it is determined in step S10 that the flow rate of loose objects is not too small relative to the number of standby units (No), that is, if the flow rate of loose items is in an appropriate range with respect to the number of standby units, nothing is executed and the process returns to step S3. .

  Thus, in order to monitor the standby state of the standby vehicle 7a, measure the unloading capacity at the PUL4, and adjust the unloading capacity so as to match the standby state of the standby vehicle 7a with the unloading capacity, The speed can be matched, and the efficiency from unloading to transporting to the rose storage silo 5 can be improved.

  The transport vehicle is a dump truck, but may be an automatic guided vehicle (AGV) that travels and dumps according to a command from the control device.

1 Bulk handling equipment 2a Funakura 4 PUL
5 Bulk storage silo 7 Transport vehicle 7a Standby vehicle 17 Hopper U Dispensing position

Claims (6)

Discharge management method in a bulk handling facility for unloading roses in a cargo hold with a pneumatic unloader and delivering them to a transport vehicle that reciprocates between rose storage silos from a hopper provided at a delivery position. ,
Monitor the standby state of the standby vehicle waiting for the discharge of the loose article, measure the unloading capacity at the pneumatic unloader, and adjust the unloading capacity to match the standby state of the standby vehicle with the unloading capacity A payout management method in a bulk handling facility. This is a payout management system in a bulk handling facility for unloading roses in a cargo hold with a pneumatic unloader and paying them to a transport vehicle that reciprocates between rose storage silos from a hopper provided at the payout position. ,
The vehicle monitoring sensor for monitoring the standby state of the standby vehicle waiting for the discharge of the loose article, the rose measurement sensor for measuring the unloading capacity of the pneumatic unloader, and the standby state of the transport vehicle and the unloading capacity are matched. And a control device for adjusting the unloading capacity to a truck handling system in a bulk handling facility.   3. The bulk according to claim 2, wherein the control device controls the unloading capacity of the pneumatic unloader in accordance with a standby state of the standby vehicle based on an unloading amount from the loose object weighing sensor when physical properties of the rose object are input. Truck payout management system for handling equipment.   The truck delivery management in the bulk handling facility according to claim 3, wherein the hopper is provided with a gate whose opening degree can be adjusted, and the control device adjusts the opening degree and the opening time of the gate according to the unloading capacity. system.   The transport vehicle in the bulk handling facility is provided with an identification label in which an identification number is written or stored in advance, and the vehicle monitoring sensor has a reading function for reading the identification number from the identification label in a non-contact manner, The control device includes a vehicle storage unit in which a correspondence relationship between the identification number of the transport vehicle and the maximum load amount is stored in advance, and the maximum load amount corresponding to the identification number from the vehicle monitoring sensor is determined from the vehicle storage unit. The truck payout management system for a bulk handling facility according to claim 2 or 3, wherein the gate opening degree and the opening time are further adjusted according to the maximum load capacity of the transport vehicle that is acquired and stopped at the payout position.   The truck delivery management system in a bulk handling facility according to any one of claims 2 to 5, wherein the control device adjusts the number of the transport vehicles in accordance with the unloading capacity of a loose article to be unloaded.

Images