JP2022063999A - Conveyance system and conveyance method - Google Patents

Abstract

To adjust the simultaneous conveyance number of luggage according to a busy/slack state.SOLUTION: A conveyance system 100 includes: a first conveyance device 110 which can convey a maximum holding number of luggage; a second conveyance device 120 which can carry out or carry in luggage 200 with respect to a transfer region 210; a transfer device 130; and a control device 140. The control device 140 has conveyance information acquisition section 141 which acquires conveyance information including first conveyance information, a lapsed time grasp section 142 which grasps lapsed time after acquiring the first conveyance information, a conveyance instruction section 144 which outputs a conveyance instruction when the lapsed time is less than a time threshold value and the maximum holding number of the conveyance information is acquired and outputs the conveyance instruction even if the maximum holding number of the conveyance information is not acquired when the lapsed time becomes the time threshold value, and a threshold value update section 145 which updates the time threshold value on the basis of a condition related to amount of processing of luggage.SELECTED DRAWING: Figure 2

Description

The present invention comprises a first transport device for simultaneously loading and unloading a plurality of loads into and out of a transfer area, a second transport device capable of loading and unloading loads into and out of a transfer area, and a first transport device and a second transport device. The present invention relates to a transfer device provided with a transfer device for transferring a load between, and a transfer method for controlling the transfer of the transfer system.

Conventionally, there is a stacker crane that simultaneously conveys a plurality of loads (see Patent Document 1). In the case of such a stacker crane, a waiting time is set until the cargo to be transported at the same time is prepared, and when the waiting time is exceeded, the crane is operated even if the cargo is not collected.

Japanese Unexamined Patent Publication No. 07-07011

However, the inventor has found that the waiting time until the cargo is fully loaded affects the transportation efficiency of the entire transportation system including the stacker crane during the off-season, just before the end of business, and the like. Furthermore, as a result of intensive research and experiments, we have prepared multiple types of time thresholds that determine the time to wait until the cargo to be transported at the same time is ready, and by updating the time thresholds as appropriate according to the situation, we can easily improve the transport efficiency. We have come to find that we can improve.

The present invention has been made based on the above findings, and an object of the present invention is to provide a transport system and a transport method capable of improving the transport efficiency of the entire transport system.

In order to achieve the above object, the transport system, which is one of the present inventions, has a maximum number of loads of 2 or more, and the maximum number of packages can be simultaneously carried into or out of the transfer area. The apparatus, a second transport device capable of carrying out or carrying in a load to be transferred between the first transport device and the transfer area, and the first transport device and the second transport device. A transfer system including a transfer device for transferring a load between them, a first transfer device, a second transfer device, and a control device for controlling the transfer device, wherein the control device is the control device. A transport information acquisition unit that acquires transport information including the first transport information indicating that the first package is transported to the transfer area, and an elapsed time grasp that grasps the elapsed time since the first transport information is acquired. When the elapsed time from the acquisition of the unit and the first transfer information is less than the time threshold and the transfer information acquisition unit acquires the transfer information of the maximum number of holdings, the transfer instruction is sent to the first transfer device. When the output is output and the elapsed time reaches the time threshold, the transport instruction unit that outputs the transport instruction to the first transport device and the time threshold even if the transport information acquisition unit does not acquire the transport information of the maximum number of holdings. It is provided with a threshold update unit, which updates the device based on the conditions related to the amount of baggage processing.

Further, in order to achieve the above object, another transport method of the present invention has a maximum holding number of luggage of 2 or more, and the maximum holding number of luggage can be simultaneously carried in or out of the transfer area. A first transport device, a second transport device capable of carrying out or carrying in a load to be transferred between the first transport device and the transfer area, the first transport device and the second transport device. A transfer method in a transfer system including a transfer device for transferring a load to and from a transfer device, the first transfer device, the second transfer device, and a control device for controlling the transfer device. , The transport information acquisition unit acquires transport information including the first transport information indicating that the first load is transported to the transfer area, and grasps the elapsed time since the first transport information is acquired. When the elapsed time from the time when the unit grasps and acquires the first transfer information is less than the time threshold value and the transfer information acquisition unit acquires the transfer information of the maximum number of holdings, the transfer instruction is given to the first transfer. When the transport instruction unit outputs to the device and the elapsed time reaches the time threshold value, the transfer instruction is sent to the first transfer device even if the transfer information acquisition unit does not acquire the transfer information of the maximum number of holdings. Outputs, and the threshold value update unit updates the time threshold value based on the conditions related to the amount of baggage processing.

According to the present invention, by updating the time threshold value according to the conditions, the transport system can be appropriately operated, and the efficiency of the entire system including the transport system can be improved.

FIG. 1 is a perspective view showing an excerpt of a part of the transport system. FIG. 2 is a block diagram showing a functional configuration of the control device. FIG. 3 is a flowchart showing a processing flow of the transport system.

Hereinafter, embodiments of the transport system and the transport method according to the present invention will be described with reference to the drawings. It should be noted that the following embodiments are intended to give an example for explaining the present invention, and are not intended to limit the present invention. For example, the shape, structure, material, component, relative positional relationship, connection state, numerical value, mathematical formula, content of each stage in the method, order of each stage, etc. shown in the following embodiments are examples. May contain content not listed in. In addition, geometrical expressions such as parallel and orthogonal may be used, but these expressions do not indicate mathematical rigor and include substantially permissible errors and deviations. In addition, expressions such as simultaneous and identical also include a range that is substantially permissible.

Further, the drawings are schematic views in which emphasis, omission, or ratio adjustment is appropriately performed to explain the present invention, and are different from the actual shape, positional relationship, and ratio.

Further, in the following, a plurality of inventions may be comprehensively described as one embodiment. In addition, some of the contents described below are described as arbitrary components relating to the present invention.

FIG. 1 is a perspective view showing an excerpt of a part of the transport system. The transport system 100 is a system capable of automatically loading the luggage 200 into the rack 101 for storing the luggage 200 and automatically carrying out the luggage 200, the first transport device 110 and the second. It includes a transport device 120, a transfer device 130, and a control device 140.

The rack 101 is a facility for storing luggage 200. In the case of the present embodiment, the rack 101 has a plurality of shelves in the vertical direction (Z-axis direction in the figure) for arranging the luggage 200 in the first direction (Y-axis direction in the figure) in the horizontal plane and holding the luggage 200 in a mounted shape. I have. In FIG. 1, the rack 101 may be provided in parallel with the first transport device 110 in the second direction (X-axis direction in the figure) orthogonal to the first direction in the horizontal plane. Further, the length of the rack 101 in the first direction is not particularly limited. In the figure, the length of the rack 101 is shown short, but this is for ease of illustration, and the rack 101 may be longer than the one shown. Further, the method of holding the luggage of the rack 101 is not particularly limited, and for example, the luggage 200 provided with two canches arranged so as to face each other in the first direction and placed so as to straddle the two canches. You may keep it.

The first transport device 110 is a device capable of simultaneously transporting at least two or more luggage 200 having a maximum holding number to the transfer area 210. The maximum number of holdings is the maximum number of packages 200 that can be simultaneously transported by the first transport device 110. In the case of the present embodiment, since the first transport device 110 is a device capable of simultaneously transporting two packages 200, the maximum number of holdings is 2.

The type of the first transport device 110 is not particularly limited, and for example, a trackless trolley that autonomously travels on the floor surface, a tracked trolley that travels along a track laid on the floor surface, the ceiling surface, and the like. Can be exemplified. Further, the first transfer device 110 may be a conveyor or the like. In the case of this embodiment, the first transfer device 110 is a stacker crane.

The first transport device 110, which is a stacker crane, can simultaneously transport a plurality of held loads 200 in the extending direction (Y-axis direction in the figure) of the rack 101, and also in the vertical direction (Z-axis direction in the figure). The held luggage 200 can be transported at the same time. The first transport device 110 includes a carriage 111, a mast 112, an elevating table 113, and a rail 114.

The rail 114 is laid along the extending direction of the rack 101 (Y-axis direction in the drawing) on the floor on which the rack 101 is installed. The first transport device 110 includes ceiling rails (not shown) arranged parallel to the rails 114 on the ceiling surface, and secures stability by traveling along a pair of upper and lower rails 114.

In the case of the present embodiment, the rail 114 is laid over the entire extending direction of the rack 101 so that the load 200 can be transferred to any position of the rack 101 in the first direction, and further, the second transport device 120. It is laid to the position where the luggage 200 can be transferred between and.

The dolly 111 is a device capable of reciprocating along the rail 114. Further, the carriage 111 travels along the rail 114 laid on the ceiling surface. The first transport device 110 includes a ceiling carriage (not shown) that can reciprocate along the ceiling rail.

The mast 112 is a structural member that extends in the vertical direction and forms an elevating path for the elevating table 113. In the case of the present embodiment, the lower end portions of the mast 112 are arranged at two parallel ends in the first direction, which is the traveling direction of the trolley 111, and are attached to both ends of the trolley 111. The upper end of the mast 112 is attached to the ceiling carriage.

The elevating table 113 is a structural member that can be raised and processed along the mast 112, and a plurality of (two in the case of the present embodiment) luggage 200 can be raised and lowered at the same time. In the case of the present embodiment, the elevating table 113 arranges a plurality of luggage 200 in parallel with the arrangement direction (Y-axis direction in the figure) of the luggage 200 of the rack 101 in the same horizontal plane, and holds the luggage 200 in a mounted shape. Further, the elevating table 113 holds the transfer device 130, and moves the transfer device 130 up and down together with the luggage 200. Therefore, the first transfer device 110 can raise and lower the transfer device 130 and travel together with the carriage 111.

The transfer device 130 is a device for transferring the luggage 200 between the first transfer device 110 and the second transfer device 120 in the transfer area 210. The transfer device 130 may be able to simultaneously transfer a plurality of packages 200 in the transfer area 210, or may be able to individually transfer the packages 200 arranged at different positions in the transfer area 210. Further, the transfer device 130 may have both capabilities. The type of the transfer device 130 is not particularly limited, that is, a device that lifts the luggage 200 with a fork, a device that hooks and pulls in the end face of the luggage 200 by a claw provided on the arm, and a claw provided on the arm. It is possible to exemplify a device that pushes and moves the end face of the luggage 200 on the front side.

The second transfer device 120 is a device capable of carrying out or carrying in a plurality of packages 200 to be transferred to and from the first transfer device 110 in the transfer area 210. The type of the second conveyor 120 is not particularly limited, and examples thereof include a trolley that autonomously travels on a trackless floor surface, a trolley that travels along a track laid on the floor surface, and a ceiling surface, and the like. It can also be a vertical conveyor or the like. In the case of this embodiment, the second transfer device 120 is a roller conveyor.

The second transfer device 120, which is a roller conveyor, may be able to simultaneously carry a plurality of luggage 200 into the transfer area 210, and may be able to simultaneously carry out a plurality of luggage 200 from the transfer area 210. Further, the second transfer device 120 may sequentially carry a plurality of packages 200 into the transfer area 210, or may sequentially carry out a plurality of packages 200 from the transfer area 210.

In the case of the present embodiment, the second transfer device 120 is arranged so as to project from the vicinity of the end face of the rack 101 toward the outside of the rack 101 in the first direction. The end portion arranged in the transfer area 210 of the second transfer device 120 keeps the sequentially carried-in baggage 200 in a position where it can be transferred to and from the first transfer device 110, and the next baggage 200 Can be carried in to a position where it can be transferred. In the case of the present embodiment, the height position of the luggage 200 held by the second transport device 120 in a mounted manner coincides with the height position of the luggage 200 held by a predetermined stage of the rack 101. As a result, the luggage 200 can be transported and transferred between, for example, the lowermost stage of the rack 101 and the second transport device 120 without moving the elevating table 113 of the first transport device 110 up and down.

FIG. 2 is a block diagram showing a functional configuration of the control device. The control device 140 is a device that controls the first transfer device 110, the second transfer device 120, and the transfer device 130, and is a processing unit realized by causing a processor to execute a program, such as a transfer information acquisition unit 141. The elapsed time grasping unit 142, the transport instruction unit 144, and the threshold value updating unit 145 are provided. In the case of the present embodiment, the control device 140 further includes a mode changing unit 143 as a processing unit.

The transport information acquisition unit 141 acquires transport information including the first transport information indicating that the first (first) load 200 is transported to the empty transfer area 210 in which the load 200 is not arranged. The destination from which the transport information acquisition unit 141 acquires transport information is not particularly limited, but in the case of the present embodiment, the transport information acquisition unit 141 controls, for example, an automated warehouse system including a plurality of transport systems 100. Transport information is acquired from the host computer 220 that is managed in a targeted manner.

The specific content of the transport information is not particularly limited, but the transport information includes at least one of the information for storing the luggage 200 in the rack 101 and the information for leaving the luggage 200 from the rack 101. ..

The first transport information as information for storing the luggage 200 in the rack 101 is, for example, information instructing the second transport device 120 to carry the luggage 200 into the empty transfer area 210, the empty transfer area 210. Contains at least one information indicating that the first baggage 200 has been carried in, and information indicating that the first baggage 200 has been placed in a transferable position in the transfer area 210. Information indicating that the first baggage 200 has been carried into the empty transfer area 210, information indicating that the first baggage 200 has been placed at a transferable position in the transfer area 210, and the like are transferred. The transport information acquisition unit 141 may directly acquire the information from the sensor installed inside the region 210 or in the vicinity of the transfer region 210 as the first transport information.

The first transport information as information for discharging the luggage 200 from the rack 101 is, for example, the luggage 200 at a predetermined position held in the rack 101 by the transfer device 130 provided in the first transport device 110, and the luggage 200. Information instructing the transfer to the empty first transfer device 110 that is not held, information indicating that the first load 200 has been transferred from the rack 101 to the empty first transfer device 110, and the first transfer. At least one piece of information such as information indicating that the device 110 is empty and the transfer area 210 is empty and the first load 200 is to be carried out from the rack 101 to the second transfer device 120 in the transfer area 210. Including one. The information indicating that the first luggage 200 has been transferred from the rack 101 to the empty first transfer device 110 is information from the sensors provided in the first transfer device 110 and the transfer device 130. The acquisition unit 141 may directly acquire the first transport information.

Further, the transport information acquisition unit 141 acquires the transport information next to the first transport information as the second transport information. The second transport information as information for storing the luggage 200 in the rack 101 indicates that, for example, the second transport device 120 carries the next luggage 200 into the transfer area 210 in which the first luggage 200 is arranged. Information, information indicating that the next baggage 200 has been carried into the transfer area 210 where the first baggage 200 is placed, and that the next baggage 200 has been placed in a transferable position in the transfer area 210. Includes at least one such as the information shown. Information indicating that the next baggage 200 has been carried into the transfer area 210 in which the first baggage 200 is arranged, and indicating that the next baggage 200 has been placed in a transferable position in the transfer area 210. Information and the like may be directly acquired by the transport information acquisition unit 141 as the second transport information based on the sensor.

The second transport information as information for discharging the luggage 200 from the rack 101 is, for example, the luggage 200 at a predetermined position held in the rack 101 by the transfer device 130 provided in the first transport device 110, and the luggage 200. Information instructing to transfer to the first transport device 110 holding the first luggage 200, the next luggage 200 is transferred from the rack 101 to the first transport device 110 holding the first luggage 200. Information indicating that, and the state in which the first transport device 110 holds the first load 200 and the transfer area 210 is empty, the next load 200 is transferred from the rack 101 to the transfer area 210. (Ii) Includes at least one piece of information, such as information indicating that the device is to be carried out to the carrier 120. Information indicating that the next luggage 200 has been transferred from the rack 101 to the first transport device 110 in which the first luggage 200 is arranged is directly provided by the transport information acquisition unit 141 as the second transport information based on the sensor. You may get it.

In the case of this embodiment, the first transport information is the first transport information and the second transport information is the last transport information. However, when the maximum number of holdings of the first transport device 110 is 3 or more, the maximum number of holdings is reached. The transport information of is the final transport information.

The elapsed time grasping unit 142 grasps the elapsed time since the transport information acquisition unit 141 acquires the first transport information. The method of grasping the elapsed time is not particularly limited. For example, the elapsed time grasping unit 142 has a timer function, and the transport information acquisition unit 141 is triggered by the acquisition of information indicating that the first transport information has been acquired. The timer function may be operated. Further, the elapsed time grasping unit 142 may acquire the time from the host computer 220 or the like, and may grasp the difference between the time when the transport information acquisition unit 141 acquires the first transport information, the current time, and the elapsed time as the elapsed time.

The transport instruction unit 144 outputs a transport instruction to at least the first transport device 110. The transfer instruction may be output to at least one of the second transfer device 120 and the transfer device 130. Specifically, the transport instruction unit 144 sequentially acquires the elapsed time grasped by the elapsed time grasping unit 142 after the transport information acquisition unit 141 acquires the first transport information, compares it with the time threshold value, and compares the elapsed time with the time threshold value. When the transport information acquisition unit 141 acquires the last transport information, which is less than the maximum number of held transport information, the transport instruction is output to the first transport device 110. The first transport device 110 that has acquired the transport instruction starts the operation based on the acquired transport information including the last transport information. The second transfer device 120 and the transfer device 130 may also operate based on the acquired transfer information. On the other hand, when the elapsed time reaches the time threshold value, the transport instruction is output to the first transport device 110 even if the transport information acquisition unit 141 does not acquire the last transport information. In this case, the first transport device 110 starts operation in a non-full state based on the transport information acquired when the elapsed time reaches the time threshold value. Even in this case, the second transfer device 120 and the transfer device 130 may also operate based on the acquired transfer information.

The transport instruction unit 144 acquires a time threshold value as a determination standard for determining the elapsed time grasped by the elapsed time grasping unit 142. The destination from which the transport instruction unit 144 acquires the time threshold value is not particularly limited, and for example, an input by a worker or the like, a host computer 220, or the like can be exemplified as the acquisition destination. In the case of the present embodiment, the transport instruction unit 144 acquires the time threshold value from the storage means 149.

The threshold value update unit 145 updates the time threshold value acquired by the transport instruction unit 144 based on the conditions related to the amount of baggage processing. The method by which the threshold value update unit 145 updates the time threshold value is not particularly limited. For example, the threshold value update unit 145 may update the time threshold value stored in the storage means 149. Further, the threshold value updating unit 145 may select from a plurality of different time threshold values stored in the storage means 149 and update the time threshold value acquired by the transport instruction unit 144 to the selected time threshold value. .. Further, the threshold value update unit 145 may calculate a new time threshold value by performing an operation such as, for example, a premium or a discount with respect to the reference time threshold value, and update the time threshold value according to the calculated time threshold value.

The predetermined condition for the threshold value update unit 145 to update the threshold value is not particularly limited. For example, the threshold value update unit 145 acquires the current time from a timekeeping means (not shown) provided in the control device 140, a host computer 220, or the like, and uses the acquired current time as a determination element of a condition related to the amount of baggage processing. You may update the threshold. Specifically, the high operating hours when the number of transport information is output in one day is from 9:00 to 17:00, and the other time zones are the low operating hours when the number of transport information is small. In some cases, the threshold update unit 145 determines from the acquired current time whether the current belongs to the high operating time zone or the low operating time zone, and in the case of the low operating time zone, it is used in the high operating time zone. Update to a time threshold shorter than the time threshold.

Further, the threshold value update unit 145 processes the remaining number of packages by subtracting the number of packages 200 already transported from the total number of packages 200 scheduled for the first transport device 110 in one day. The time threshold may be updated as a judgment factor of the condition related to. Specifically, when the number of remaining transports becomes less than the maximum number of holdings, the time threshold is updated to be shorter than the time threshold used up to that point.

Further, the threshold value update unit 145 uses a time threshold value as a determination factor of a condition related to the amount of baggage processing, using the amount of the number of transport information (hereinafter, may be referred to as “transport density”) in a predetermined period. You may update it. Specifically, when the threshold value update unit 145 acquires the physical flow of the upstream equipment provided on the upstream side of the transport system 100 and the transport density calculated from the physical flow of the upstream equipment exceeds the distribution threshold, it is long. It is updated to the time threshold, and if it falls below the distribution threshold, it is updated to the short time threshold. Further, the threshold value update unit 145 records the past transport density, statistically processes the past transport density, and predicts the current transport density by processing by artificial intelligence. If the expected transport density is less than the density threshold, the time threshold used if it is greater than or equal to the density threshold is updated to a shorter time threshold.

When the threshold value update unit 145 updates the time threshold value to a short time threshold value on the assumption that the transfer density is less than the density threshold value, the mode change unit 143 of the first transfer device 110, the second transfer device 120, and the transfer device 130. Change at least one operation to low acceleration mode. The low acceleration mode is a mode in which the time required to reach a predetermined operating speed is set longer than the time in the normal mode. In addition, the case where the maximum operating speed is set to be slower than the maximum operating speed set in the normal mode is also included in the low acceleration mode.

Next, an example of the processing flow of the transport system 100 will be described. FIG. 3 is a flowchart showing a processing flow of the transport system.

The threshold value update unit 145 acquires the current time (S101), and when the acquired time is included in the low operating time zone (S102: Yes), acquires a relatively short time threshold value from the storage means 149 and updates it. (S103). If the threshold has already been updated to a short time, it is not necessary to update. On the other hand, when the acquired time is not included in the low operating time zone (S102: No), a relatively long time threshold value is acquired from the storage means 149 and updated (S104). If the threshold has already been updated for a long time, it may not be updated.

Next, the transport information acquisition unit 141 acquires the first transport information indicating that the first package 200 is to be transported to the transfer area 210 (S105). The transport instruction unit 144 determines whether or not the transport information acquisition unit 141 has acquired the transport information of the maximum number of holdings by the first transport device 110 (S106), and the transport information acquisition unit 141 receives the transport information of the maximum number of holdings. When it is determined that the information has been acquired (S106: Yes), a transport instruction is output (S108). On the other hand, when it is determined that the transport information acquisition unit 141 has not acquired the maximum number of transport information (S106: No), and the elapsed time from the acquisition of the first transport information reaches the time threshold value (S106: No). S107: Yes), the transfer instruction is output to the first transfer device 110. On the other hand, when the elapsed time from the acquisition of the first transport information is less than the time threshold value (S107: No), it is determined whether or not the transport information acquisition unit 141 has acquired the maximum number of transport information again (S106). And the threshold comparison (S107) of the elapsed time is repeated until a predetermined condition is satisfied.

The transport system 100 and the transport method according to the embodiment update the time threshold value based on the conditions related to the amount of baggage processing. Specifically, in the transport system 100 including a transport vehicle capable of transporting a plurality of luggage 200 as the first transport device 110, it is the second time since the transport vehicle is in a state where the first luggage 200 can be transported. The waiting time for waiting for the luggage 200 is updated to a shorter time when the amount of transportation is small than when the amount of transportation is large. Thereby, for example, during the busy season, the cargo 200 is transported to the first transport device 110 in a fully loaded state, and the cargo 200 is simultaneously transferred in the transfer area 210, so that high transport efficiency can be ensured. On the other hand, in the off-season, the efficiency of the entire distribution system including the transport system 100 is improved by frequently transporting the luggage 200 and transferring it in the transfer area 210 without loading the first transport device 110. You can do things. For example, by distributing the work load downstream of the transport system 100, the load on the operator is reduced and the efficiency of the entire system is improved.

The present invention is not limited to the above embodiment. For example, another embodiment realized by arbitrarily combining the components described in the present specification and excluding some of the components may be an embodiment of the present invention. The present invention also includes modifications obtained by making various modifications that can be conceived by those skilled in the art within the scope of the gist of the present invention, that is, the meaning indicated by the wording described in the claims, with respect to the above-described embodiment. Will be.

For example, in the case of delivery, the transfer instruction includes an instruction from the rack 101 to the transfer device for transferring the load 200 to the first transfer device 110, and a second transfer of the load 200 from the first transfer device 110 in the transfer area 210. Instructions to the transfer device to be transferred to the device 120, instructions to the second transfer device 120 to carry out the luggage 200 from the transfer area 210, and the like may be included. Further, in the case of warehousing, the transport instruction includes an instruction to the second transport device 120 for loading the load 200 into the transfer area 210, and the load 200 from the second transport device 120 to the first transport device 110 in the transfer area 210. Instructions to the transfer device to be transferred, instructions to the transfer device to transfer the luggage 200 from the first transfer device 110 to the rack 101, and the like may be included.

Further, different time thresholds of 3 or more may be used. In this case, the conditions related to the amount of baggage processing are determined in three or more stages.

Further, although the second transfer device 120 has been described as a roller conveyor, the second transfer device 120 may be a chain conveyor, a belt conveyor, or the like. The same applies to other devices that employ conveyors.

It can be used for automated warehouses that carry in and out multiple packages at the same time for racks and the like.

100 Transport system 101 Rack 110 First transport device 111 Cart 112 Mast 113 Lifting platform 114 Rail 120 Second transport device 130 Transfer device 140 Control device 141 Transport information acquisition unit 142 Elapsed time grasping unit 144 Mode change unit 144 Transport instruction unit 145 Threshold update unit 149 Storage means 200 Luggage 210 Transfer area 220 Upper computer

Claims (6)

A first transport device that has a maximum number of luggage held at 2 or more and can simultaneously carry in or out the maximum number of luggage in the transfer area.
A second transfer device capable of carrying out or carrying in a load to be transferred to or from the first transfer device to the transfer area.
A transfer device for transferring a load between the first transfer device and the second transfer device, and a transfer device.
A transfer system including the first transfer device, the second transfer device, and a control device for controlling the transfer device.
The control device is
A transport information acquisition unit that acquires transport information including a first transport information indicating that the first load is to be transported to the transfer area, and a transport information acquisition unit.
An elapsed time grasping unit that grasps the elapsed time since the acquisition of the first transport information, and an elapsed time grasping unit,
When the elapsed time from the acquisition of the first transport information is less than the time threshold value and the transport information acquisition unit acquires the transport information of the maximum number of holdings, the transport instruction is output to the first transport device. When the elapsed time reaches the time threshold, the transport instruction unit that outputs the transport instruction to the first transport device even if the transport information acquisition unit does not acquire the transport information of the maximum number of holdings,
A threshold value updater that updates the time threshold value based on conditions related to the amount of baggage processing, and
Conveyance system with. The threshold update unit is
The transport system according to claim 1, wherein the current time is acquired and the acquired current time is used as a determination element of a condition related to the amount of processing of the baggage to update the time threshold value. The threshold update unit is
The first aspect of claim 1 is that the time threshold value is updated as a determination factor of a condition related to the amount of processing of the baggage, in which the remaining number of transports obtained by subtracting the number of transports of the already transported cargo from the total number of scheduled cargoes to be transported is used as a determination factor of the conditions related to the amount of processing of the baggage. Transport system. The threshold update unit is
The transport system according to claim 1, wherein the time threshold value is updated as a determination factor of a condition related to the quantity of the transport information in a predetermined period. When the threshold value update unit updates the time threshold value assuming that the number of transport information in a predetermined period is less than the density threshold value, at least one of the first transport device, the second transport device, and the transfer device. The transport system according to claim 4, further comprising a mode change unit that changes the operation to the low acceleration mode. Between the first transport device that has a maximum number of loads of 2 or more and can simultaneously carry in or out the maximum number of loads into the transfer area and the first transfer device with respect to the transfer area. A second transfer device capable of carrying out or carrying in the load to be transferred, a transfer device for transferring the load between the first transfer device and the second transfer device, the first transfer device, and the above. A transfer method in a transfer system including a second transfer device and a control device for controlling the transfer device.
The transport information acquisition unit acquires transport information including the first transport information indicating that the first load is to be transported to the transfer area.
The elapsed time grasping unit grasps the elapsed time since the acquisition of the first transport information, and
When the elapsed time from the acquisition of the first transport information is less than the time threshold value and the transport information acquisition unit acquires the transport information of the maximum number of holdings, the transport instruction is sent to the first transport device. Is output, and when the elapsed time reaches the time threshold value, the transport instruction unit outputs the transport instruction to the first transport device even if the transport information acquisition unit does not acquire the transport information of the maximum number of holdings.
A transport method in which the threshold value update unit updates the time threshold value based on conditions related to the amount of baggage processing.

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