TWI438123B - Pallet truck system - Google Patents

Description

Pallet system

The present invention relates to a transport vehicle system for transporting articles using a transport vehicle, and more particularly to a transport vehicle system corresponding to a warehouse having a fan filter unit.

In the past, a system using an overhead traveling vehicle, an orbiting trolley, a stacker crane, and an automated guided vehicle to carry articles has a transport vehicle system. In the transport vehicle system, a storage unit that temporarily stores articles is provided along the transport path of the transport vehicle.

The above-described truck system has, for example, an automatic warehouse for a stacker crane as a transport vehicle. The automatic warehouse is provided with a carrier that accommodates a plurality of articles for storing articles, and serves as a storage unit, and a station in which the articles are transferred from the carrier different from the stacker crane to the article transfer site is provided. The stacker crane travels on the track to the predetermined scaffolding of the carrier, or stands up to lift and lower the lifting platform on which the article is placed, and exits the sliding fork frame, thereby transferring between the lifting platform and the carrier and the station article. The handling of items between stations is carried out in a different way than a stacker.

The related art of the automatic warehouse is, for example, an automatic warehouse for a clean room described in Patent Document 1. In this technique, a device for supplying clean air called a fan filter unit (hereinafter referred to as FFU) is provided on a carrier of an automatic warehouse to maintain the cleanliness (cleanliness) of the automatic warehouse.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-231774

However, the automatic warehouse described in Patent Document 1 has the following problems.

That is, in the automatic warehouse, although one FFU is provided with respect to one example of the scaffold, when one of the FFUs is abnormal and cannot operate normally, the scaffold array provided for the FFU caused by the failure cannot maintain the cleanliness. As a result, since the articles of the scaffold which cannot maintain the cleanliness are contaminated, and the contaminated articles are moved to other scaffoldings, the situation in which the scaffolds maintaining the cleanliness is contaminated may occur. That is, since the contaminated articles may contaminate the scaffolding that guides the cleanliness, the situation in which the articles are used as a medium to expand the pollution is caused.

Further, in the automatic warehouse for a clean room of Patent Document 1, the stacker crane carries the articles in a state in which the scaffolds that cannot maintain the cleanliness and the other scaffolds that maintain the cleanliness are in an indistinguishable state. As a result, when the stacker crane (lifting platform) moves to the other scaffolding frame at the normal conveying speed through the front of the scaffold which cannot maintain the cleanliness, the stacking crane itself is contaminated, and thus the pollution occurs. The overall handling of the items carried by the stacker is contaminated. That is to say, according to the pollution of the stacking crane, the pollution of the cleaning articles will be caused, and at the same time, the high-rise crane will cause the pollution to expand due to the media.

Therefore, the present invention has been made in view of the above problems, and an object of the vehicle system capable of preventing an increase in pollution is provided.

In order to achieve the above object, a transport vehicle system according to the present invention is a transport vehicle system that transports articles by using a transport vehicle, and is characterized in that, for each of the fan filter units, memory for supplying clean air by the fan filter unit is stored. In the memory unit of the related chart of the area of the article and the abnormality of any of the fan filter units, the transport control unit that controls the transport vehicle so that the contamination of the fan filter unit in which the abnormality has occurred is not enlarged.

Here, the conveyance control unit may determine the conveyance path of the conveyance vehicle so that, in the case where an abnormality occurs in any of the fan filter units, the area related to the abnormal fan filter unit in the related diagram is not passed.

Further, the conveyance control unit may determine the conveyance speed of the conveyance vehicle so that when any of the fan filter units is abnormal, the speed in the relevant diagram is related to the area of the fan filter unit in which the abnormality has occurred, and the speed is lower than that of the other area. The speed of time.

Thereby, when a part of the FFU is abnormal, the control vehicle does not pass through the area where the cleaning cannot be maintained, and the speed is lowered when passing. Therefore, it is possible to prevent the transportation vehicle from being contaminated by the cleaning matter of the media with high probability without contaminating the truck.

Further, in the case where an abnormality occurs in any of the fan filter units, the conveyance control unit may cause the articles stored in the relevant map to be in contact with the fan filter unit in which the abnormality has occurred to be avoided.

Thereby, when a part of the FFU is abnormal, the conveyance vehicle is controlled so that the article in the clean area cannot be avoided. Therefore, it is impossible to maintain the articles in the clean area without being contaminated, and it is possible to prevent the articles from being caused by the media to cause an increase in the pollution of the clean scaffold.

Further, the transport vehicle system is a carrier including a plurality of scaffolds for storing articles; a fan filter unit for supplying the scaffold cleaning air; and an automatic warehouse for stacking cranes for transporting articles; the transport control unit may also control the stack High-rise cranes prevent the pollution of scaffolding in the above areas from being extended to other scaffolding and articles.

Thereby, the pollution in the automatic warehouse can be prevented from expanding.

Further, the transport system includes a plurality of clean rooms for storing articles, a fan filter unit that supplies clean air to the clean room, and a transport vehicle that transports articles, and the transport control unit may control the transport vehicle to make the area The pollution of the clean room is not as large as other clean rooms and items.

Thereby, it is possible to prevent contamination of the plurality of truck systems having the clean room.

According to the present invention, it is possible to realize a truck system that prevents contamination from expanding.

Hereinafter, the transport vehicle system according to the embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) Fig. 1 is a cross-sectional view of the automatic warehouse for a clean room according to the embodiment (a horizontal cross-sectional view of the upper portion of the FFU). Figure 2 is a cross-sectional view (vertical cross-sectional view) of the same automated warehouse.

This automatic warehouse is an example of the transportation vehicle system of the present invention, and is composed of a stacker crane 1, a carrier 2, and an FFU 4.

The stacking crane 1 is an example of a transport vehicle of the present invention, and has a function of transporting an article picked up from a station (not shown) to the rack 2, and extracting the articles from the rack 2 and transporting the articles to the station. Specifically, the stacker crane 1 travels on the traveling rail 6 of the passage 5 laid in front of the carrier 2, lifts and lowers the lifting platform on which the article 8 is placed, and causes the sliding fork to exit the article 8.

The carrier 2 is provided along the passage 5 of the stacking crane 1, and the carrier 2 is provided with a plurality of article storage racks for storing the articles 8 in a vertical and horizontal direction. The front of the scaffolding through which the scaffolding and the stacking crane 1 (elevating platform) passes is an example of the area of the invention, and the different scaffoldings and the front of the scaffolding are different areas. The back side of the carrier 2, that is, the side opposite to the passage 5, is provided with a pipe 14 whose outer side is covered with a non-ventilating outer wall. A pair of discharge ports 20 and 21 are provided from the portions of the pillars 22 on the back surface of the FFU 4 of the carrier 2, that is, at both end portions in the horizontal direction on the back surface of the FFU 4.

The FFU 4 is disposed at the bottom of the carrier 2 to supply clean air to the carrier 2. Each of the FFUs 4 is provided with a pair of discharge ports 20 and 21, and the discharge air is ejected from the discharge ports 20 and 21 in the lateral direction, and flows from the lower portion of the carrier 2 to the upper portion. Further, in Fig. 2, an arrow indicates the flow of clean air.

Fig. 3 is a block diagram showing the functional configuration of the automatic warehouse of the embodiment.

The automatic warehouse is the mechanism unit 30, the control unit 31, the display unit 32, the input unit 33, the communication I/F unit 34, the conveyance condition determination unit 35, the evacuation command generation unit 36, the scaffolding data update unit 37, the storage unit 39, and The FFU state confirming unit 42 is configured. Further, the control unit 31, the conveyance condition determination unit 35, and the evacuation command generation unit 36 are examples of the conveyance control unit of the present invention.

The mechanism unit 30 is a collection of mechanism components such as a stacker crane 1 and an FFU 4 .

The control unit 31 is a control mechanism unit 30 based on a transport command and an evacuation command.

The display unit 32 is a CRT (Cathod-Ray Tube) or an LCD (Liquid Crystal Display), and the input unit 33 is a keyboard or a mouse. These are used as a dialogue between the automatic warehouse and the operator.

The communication I/F unit 34 is used as communication between the stacker 1 and the FFU 4.

The conveyance condition determination unit 35 determines conveyance conditions such as a conveyance path and a conveyance speed of the article 8 based on the conveyance command. The transportation condition is determined by referring to the scaffolding data 41. When the FFU 4 is abnormal, the stacking crane 1 is controlled so that the clean air supplied by the abnormal FFU 4 causes the scaffolding pollution to not spread to other scaffolds other than the scaffolding. article. The conveyance path is the order in which the stacker 1 (elevator) passes through the front scaffold, and the conveyance speed is the speed when passing through the front of the scaffold.

The evacuation command generating unit 36 controls the stacker 1 to issue an evacuation command to cause the scavenging of the clean air supplied by the abnormal FFU 4 when one of the failures of the FFU 4, the abnormality of the fan, or the clogging of the filter is received. Do not expand to other scaffolding and items. The evacuation command is an instruction to move the article 8 of the non-clean scaffold that cannot supply clean air to the clean scaffold that supplies the clean air.

When the scaffolding data update unit 37 receives the abnormality report, the scaffolding data 41 is updated. The update of the scaffolding data 41 is performed by registering the associated scaffolding of the abnormal FFU4 with the data 40 as a non-clean scaffolding to the scaffolding data 41.

The memory unit 39 is a hard disk, a memory, or the like, and holds the related chart 40, the scaffolding data 41, and the like.

4 and 5 are diagrams showing an example of the related chart 40 and the scaffolding data 41. In addition, the numbers given in the horizontal direction of the FFU and the scaffolding text in FIGS. 4 and 5 are for specifying the number of the scaffolding and the FFU 4 which are given in advance for each of the scaffolding and the FFU 4.

The correlation chart 40 is for each FFU 4, interlinked with the scaffolding of the clean air supplied by the FFU 4. For example, the FFU4 of No. 1 is about the scaffolding of No. 1~8. In the automatic warehouse having the first and second configurations, for example, the scaffolding in the same row is associated with the FFU 4 of the column.

The scaffolding data 41 indicates the state of all the scaffoldings of the carrier 2. In the fifth figure, "air state" is a scaffolding indicating whether it is clean, "○" is a scaffolding that is clean, and "x" is a scaffolding that is not clean. Further, the "empty state" is a scaffold indicating whether or not the article 8 is stored, "○" is a scaffold indicating that the article 8 is not stored, and "x" is a scaffold indicating that the article 8 is stored. For example, the scaffolding No. 1 is a scaffold that indicates that it is clean and that the item 8 is not in storage.

The FFU state confirming unit 42 checks whether or not an abnormality has occurred in the FFU 4 in the period determined in advance.

Fig. 6 is a flow chart for explaining the conveyance operation of the article 8 having the automatic warehouse having the above configuration.

First, the conveyance condition determination unit 35 receives the conveyance command via the input unit 33 or the communication I/F 34, and determines the conveyance path (step S60). Specifically, the conveyance condition determining unit 35 determines the article 8 on the scaffold where the conveyance command indicates the loading position, and does not pass the front of the non-clean scaffold indicated by the scaffolding data 41 as much as possible, and shortens the transportation time as much as possible. The handling path. In this case, when the non-clean scaffolding at the loading position is indicated by the transport command, it is determined that the loading place is a scaffold other than the non-clean scaffolding; the user is notified that the moving place is a non-clean scaffold or not Carry the operation and end the action.

For example, the transport instruction indicates that the scaffolding at the loading place is a scaffold No. 4, and the scaffolding data 41 indicates that the scaffolding at 29 to 32 is a non-clean scaffold. At this time, the conveyance path to the scaffolding path No. 4 is determined in the front of the scaffolding of No. 29 to No. 32 shown in Fig. 7 .

On the other hand, the handling command indicates the No. 4 scaffolding of the scaffolding, and the scaffolding data 41 indicates the unclean scaffolding of the scaffolding No. 25-32. At this time, there is no way to avoid the 4th scaffolding in front of the scaffolding of No. 25~32. Therefore, the path with the least number of passes in front of the non-clean scaffold is determined, that is, only the path ahead of one of the scaffolds 25 to 32 is used as the transport path. For example, it is determined that only the path in front of the scaffolding No. 32 shown in Fig. 8 is used as the transport path.

Next, the conveyance condition determination unit 35 determines the conveyance speed (step S61). Specifically, the conveyance condition determination unit 35 determines whether or not to pass the conveyance path in front of the non-clean scaffold on the premise of the determined conveyance path. Further, when the conveyance path of the front path of the non-clean scaffolding is passed, the conveyance speed of the article 8 is determined such that the speed of the stacking crane 1 when passing the front of the non-cleaning shelving is lower than the speed when the front of the other scaffold is cleaned. On the other hand, when the conveyance path in front of the non-clean scaffold is not passed, the conveyance speed of the article 8 is determined to be a constant speed.

For example, in the case of the conveyance path shown in Fig. 7, the purpose of the scaffolding No. 4 can be reached without passing through the front of the unclean 29-32 scaffold. Therefore, it is possible to decide to carry the article 8 at a constant speed from the station to the scaffolding No. 4.

On the other hand, in the case of the conveyance path shown in Fig. 8, the target No. 4 scaffolding cannot be reached without passing through the front of the non-clean 32 scaffold. Therefore, it is determined that the speed of the stacker 1 (elevator) is lowered as soon as it passes the front of the scaffold No. 32, and the article 8 is transported as early as possible, and the article 8 is transported at a constant speed.

Finally, the control unit 31 is a conveyance condition determined by the conveyance condition determination unit 35, and the control mechanism unit 30 conveys the article 8 of the station to the scaffold where the conveyance is indicated by the conveyance command (step S62).

Fig. 9 is a flow chart for explaining the evacuation operation of the article 8 having the automatic warehouse having the above configuration.

First, the FFU state confirming unit 42 confirms that an abnormality has occurred in the predetermined FFU 4 (step S71). Specifically, the FFU state confirming unit 42 confirms that the FFU 4 that is abnormally scheduled cannot supply the clean air, and reports the abnormality to the evacuation command generating unit 36.

Next, the evacuation command generation unit 36 receives the abnormality report, and forms a non-clean scaffold according to the abnormality of the predetermined FFU 4 (step S72). Specifically, the evacuation command generation unit 36 specifies the scaffold associated with the FFU 4 that received the abnormality report on the related map 40.

For example, when the evacuation command generation unit 36 receives the report that the FFU 4 of the No. 2 has an abnormality, the FFU 4 of No. 2 and the scaffold of No. 9 to No. 16 in the related diagram 40 of FIG. 4 are associated with each other, and therefore the specific No. 9 to No. 16 is specified. Scaffolding.

Next, the scaffolding data update unit 37 registers the scaffolding as a non-clean scaffold and updates the scaffolding data 41 (step S73). Specifically, the evacuation command generation unit 36 sets the column of "air state" of the scaffold specific to the scaffolding data 41 to "x".

Next, the evacuation command generating unit 36 confirms whether or not the article 8 is stored in the specified scaffolding, and when the storage is in place, an evacuation command for evacuating the article 8 to the clean scaffold is generated (step S74). Specifically, in the scaffolding data 41, when the column of "air state" is "x" and the column of "empty state" is "x", the evacuation command generating unit 36 generates an instruction to cause the article 8 of the scaffold to be In the scaffolding data 41, the column for evacuation to "air state" is "○", and the column of "empty state" is formed as a scaffold for "○". Further, when the article 8 in the specific scaffolding is not stored, the evacuation command generating unit 36 does not generate the evacuation command end operation.

Finally, the control unit 31 controls the mechanism unit 30 to carry the article 8 by the content indicated by the evacuation command generated by the evacuation designation generating unit 36 (step S75). Specifically, the control unit 31 controls the mechanism unit 30 to transport the articles 8 of the non-clean scaffolding into the clean and empty scaffold.

As described above, according to the automatic warehouse of the present embodiment, when the FFU 4 is abnormally unable to operate normally, the conveyance of the article 8 is controlled so as not to pass through the front of the scaffold which is not kept clean, and the speed is lowered when passing. Therefore, the stacking crane can be prevented from being polluted, and the contamination of the clean items caused by the stacking crane as a medium can be prevented with a high probability.

Further, according to the automatic warehouse of the present embodiment, when the FFU 4 is abnormally inoperable, the article 8 which cannot hold the clean scaffold can be moved to the other scaffold. Therefore, it is not contaminated by items that cannot maintain a clean scaffolding, and it is possible to prevent the articles from being expanded to the pollution of the clean scaffolding with high probability.

(Second Embodiment) Fig. 10 is a schematic configuration diagram showing a transport vehicle system according to the present embodiment.

The truck system is a controller 50; a plurality of clean rooms 53; a transport truck 51 and a plurality of FFUs 54.

The clean room 53 is connected by a passage. The clean room 53 through which the stacker 1 passes is an example of the area of the invention, and the different clean rooms 53 are different areas. Each of the clean rooms 53 is provided with a storage unit that temporarily stores the articles 8 and a station that serves as the transport vehicle 51 and the storage unit.

The controller 50 is electrically connected to the transport vehicle 51 and the FFU 54 via the network, and manages the transport of the articles 8 between the clean rooms 53. Specifically, the controller 50 manages the conveyance of the article 8 by communicating with the transport vehicle 51 with a conveyance command and an evacuation command. The communication between the controller 50 and the transport vehicle 51 and the FFU 54 is performed, for example, via a communication line (transmission medium for communication) that is laid along the transport path of the article 8. While the communication line is connected to the controller 50, the transport vehicle 51 is equipped with a communication device that can transmit and receive commands between the communication lines.

The transport vehicle 51 is an overhead traveling vehicle and a railcar that travels on a traveling rail, and the loaded article 8 carries the articles 8 between the clean rooms 53.

The FFU 54 is disposed in each of the clean rooms 53 and is disposed, for example, in the ceiling of the clean room 53, and supplies clean air to the clean room 53 provided in the main body. Fig. 11 is a block diagram showing the functional configuration of the controller 50 and the transport vehicle 51.

The controller 50 is composed of a display unit 62, an input unit 63, a communication I/F unit 64, a conveyance condition determination unit 65, an evacuation command generation unit 66, a room data update unit 67, a storage unit 69, and an FFU status confirmation unit 72.

The display unit 62 is a CRT (Cathode-Ray Tube) or an LCD (Liquid Crystal Display). The input unit 63 is a keyboard or a mouse, and the like is used as a dialogue between the main controller 50 and an operator.

The communication I/F unit 64 is used for communication between the controller 50, the transport vehicle 51, and the FFU 54.

The conveyance condition determination unit 65 is a conveyance condition for determining the conveyance path, the conveyance speed, and the like of the article 8 based on the conveyance command. When the conveyance condition is determined by referring to the room data 71, and the FFU 54 is abnormal, the transport vehicle 51 is controlled so that the contamination of the clean room 53 to which the clean air is supplied by the FFU 54 having an abnormality does not increase to other than the clean room 53. Dust chamber 53 and article 8. The conveyance path is the order of the clean room 53 through which the transport vehicle 51 passes, and the conveyance speed is the speed of the conveyance vehicle 51 when passing through the clean room 53.

When the evacuation command generating unit 66 receives a report indicating that an abnormality has occurred in one of the FFUs 54, the evacuation command for controlling the transport vehicle 51 is generated so that the contamination of the clean room 53 that supplies the clean air by the FFU 54 that is abnormal is not expanded to other dust-free. Room 53 and item 8. The evacuation command is an instruction to move the article 8 of the non-clean clean room 53 to which clean air cannot be supplied to the clean clean room 53 to which the clean air is supplied.

When the room data update unit 67 receives the abnormality report, the room data update unit 67 updates the room data 71. The update of the room data 71 is performed by registering the clean room 53 associated with the FFU 54 forming an abnormality in the related chart 70 as the non-clean clean room 53 in the room data.

The memory unit 69 is a hard disk or a memory, and holds the related chart 70, the room data 71, and the like.

FIGS. 12 and 13 are diagrams showing an example of the related chart 70 and the room data 71. In addition, in the 12th and 13th drawings, the numbers given in the horizontal direction of the FFU and the clean room are the numbers of the scaffold and the FFU 4 which are given in advance for specifying the clean rooms 53 and the FFU 54 in advance.

The correlation chart 70 is for each FFU 54, and is associated with the clean room 53 of the clean air supplied by the FFU 54. For example, the FFU 54 of No. 1 is the clean room 53 of No. 1.

The room data 71 indicates the state of all the clean rooms 53. In Fig. 13, the "air state" is a clean room 53 indicating whether it is clean, "○" is a clean room 53 indicating cleanliness, and "x" is a clean room 53 indicating non-cleanness. In addition, the "empty state" is a clean room 53 that can store a new article 8 with respect to whether or not the storage of the article 8 is empty, and "○" is a clean room 53 that can store a new article 8, "×" It is a clean room 53 which cannot store a new article 8. The "warehouse state" is a clean room 53 indicating whether or not the article 8 is stored in the warehouse, "○" is a clean room 53 indicating that the article 8 is stored, and "x" is a clean room 53 indicating that the article 8 is not stored. For example, the clean room 53 indicating No. 1 is a clean room 53 in which the cleaned goods 8 are stored and the new article 8 can be stored.

The FFU state confirming unit 72 confirms whether or not an abnormality has occurred in the FFU 54 in a predetermined period.

The transport vehicle 51 is composed of a mechanism unit 60, a control unit 61, and a communication unit I/F unit 68. Further, the control unit 61, the conveyance condition determination unit 65, and the evacuation command generation unit 66 are examples of the conveyance control unit of the present invention.

The mechanism unit 60 is a collection of mechanism components such as a wheel and a motor that drives the wheel. The control unit 61 is a control mechanism unit 60 based on a transport command and an evacuation command. The communication I/f unit 68 is used for communication between the transport vehicle 51 and the controller 50, and the like.

Fig. 14 is a flow chart for explaining the conveyance operation of the article 8 of the transport vehicle system having the above configuration.

First, the conveyance condition determination unit 65 receives the conveyance command via the input unit 63 or the communication I/F 64, and determines the conveyance path (step S80). Specifically, the conveyance condition determination unit 65 is a non-clean clean room 53 that does not pass through the clean room 71 as indicated by the conveyance command, and determines the article as long as possible. 8 handling path. In this case, when the non-clean clean room 53 at the loading place is indicated by the conveyance command, it is determined that the moving place is the clean room 53 other than the non-clean clean room 53 and the user is notified that the move is not the place. Clean the scaffolding or end the operation without carrying it.

For example, the conveyance command indicates that the clean room 53 at the loading place is the clean room 53 of the No. 4 clean room 53 and the clean room 53 of the carry-out place is the clean room 53 of No. 9. Further, the clean room 53 of No. 3 and No. 5 is indicated by the chamber data 71 as the non-clean clean room 53. At this time, the clean room 53 of No. 1, 3, and No. 5 shown in Fig. 15 is taken as a path to determine the route to the clean room 53 of No. 4 as a conveyance path.

On the other hand, the No. 1 clean room 53 as the clean room 53 of the loading place and the No. 9 clean room 53 which is the clean room 53 of the carry-out place are indicated by the conveyance command. Further, the clean room 53 of No. 4, No. 5 and No. 6 is indicated by the chamber data 71 as the non-clean clean room 53. At this time, the clean room 53 of No. 4, No. 5, and No. 6 is not avoided to reach the path of the No. 1 clean room 53. Therefore, the path through which the number of the non-clean clean rooms 53 is the smallest, that is, the path through only one of the clean rooms 53 of No. 4, No. 5, and No. 6 is determined as the conveyance path. For example, it is determined that the path of the clean room 53 of the sixth only shown by Fig. 16 is used as the conveyance path.

Next, the conveyance condition determination unit 65 determines the conveyance speed (step S81). Specifically, the conveyance condition determination unit 65 determines whether or not the conveyance path of the non-clean clean room 53 passes through the premise of the determined conveyance path. When the conveyance path of the non-clean clean room 53 is passed, the conveyance speed of the article 8 is determined so that the speed of the conveyance vehicle 51 when passing through the non-clean clean room 53 is lower than the speed when the clean other clean room 53 is passed. On the other hand, when the conveyance path of the non-clean clean room 53 is not passed, the conveyance speed of the article 8 is determined to be a constant speed.

For example, in the case of the conveyance path shown in Fig. 15, the clean room 53 of the purpose can be reached without passing through the clean rooms 53 of the unclean 1, 3, and 5. Therefore, it is determined that the article 8 is transported at a constant speed from the clean room 53 to the clean room 53 of the fourth.

On the other hand, in the case of the conveyance path shown in Fig. 16, the target clean room 53 can be reached only by the non-clean No. 6 clean room 53. Therefore, it is determined that the article 8 is transported while reducing the speed of the transport vehicle 51 when the clean room 53 is cleaned, and the article 8 is transported at a constant speed.

Then, the conveyance condition determination unit 65 conveys the article 8 under the conveyance conditions determined by the conveyance, and conveys the conveyance command indicated by the clean room 53 as the carry-in place and the carry-out place to the transport vehicle 51 via the communication I/F unit 64. (Step S82).

Finally, based on the command received via the communication I/F unit 68, the control unit 30 transports the article 8 of the clean room 53 at the carry-out point to the clean room 53 of the carry-in place under the determined conveyance conditions. (Step S83).

Fig. 17 is a flow chart for explaining the evacuation operation of the article 8 having the transport vehicle system having the above configuration.

First, when an abnormality occurs in the predetermined FFU 54, (step S90), the FFU state confirming unit 72 confirms that an abnormality has occurred in the predetermined FFU 54 (step S91). Specifically, the FFU state confirming unit 72 confirms that the FFU 54 that is abnormally scheduled cannot supply the clean air, and reports the abnormality to the evacuation command generating unit 66.

Next, the evacuation command generation unit 66 receives the abnormality report, and forms the non-clean clean room 53 based on the abnormality of the predetermined FFU 54 (step S92). Specifically, the evacuation command generation unit 66 specifies the clean room 53 associated with the FFU 54 that forms an abnormality in the correlation chart 70.

For example, when the evacuation command generation unit 66 receives the report of the abnormality of the No. 2 FFU 54, the FFU 54 of the No. 2 in the related diagram 70 of FIG. 12 is associated with the clean room 53 of No. 2, so that the No. 2 dust-free is specified. Room 53.

Then, the room data update unit 67 registers the clean room 53 as the non-clean clean room 53 and updates the room data 71 (step S93). Specifically, the evacuation command generation unit 66 is "x" in the column of "air state" of the clean room 53 specified by the room data 71.

Next, the evacuation command generating unit 66 confirms whether or not the article 8 is stored in the specified clean room 53 and stores the evacuation command for evacuating the article 8 to the clean room 53 (step S94). Specifically, in the room data 71, when the column of "air state" is "x" and the column of "incoming state" forms "○", the evacuation command generating unit 66 generates an article 8 for commanding the clean room 53. The column for evacuating to the "air state" in the room data 71 is "○", and the column of "empty state" is formed as the clean room 53 of "○". Further, when the article 8 in the specified clean room 53 is not stored, the evacuation command generating unit 66 does not generate the evacuation command end operation.

Next, the evacuation command generation unit 66 transmits the generated evacuation command to the transport vehicle 51 via the communication I/F unit 64 (step S95).

Finally, the control unit 61 controls the mechanism unit 60 to carry the article 8 based on the conveyance command received via the communication I/F unit 68 (step S96). Specifically, the control unit 61 controls the mechanism unit 60 to transport the article 8 of the non-clean clean room 53 to a clean and storeable new article 8 clean room 53.

As described above, according to the transport vehicle system of the present embodiment, when the FFU 54 is abnormally unable to operate normally, the conveyance of the article 8 is controlled so as not to pass through the clean room 53 that is not cleaned, and the speed is lowered when passing. Therefore, the transportation vehicle 51 is not contaminated, and the contamination of the cleaned goods caused by the transportation vehicle as a medium can be prevented with a high probability.

Further, according to the transport vehicle system of the present embodiment, when the FFU 54 is abnormally inoperable, the article 8 in which the clean clean room 53 cannot be cleaned can be moved to the other clean room 53. Therefore, it is not contaminated by the article 8 which cannot maintain the clean clean room 53, and it is possible to prevent the article from being expanded to the contamination of the clean room 53 with high probability.

As described above, the transport vehicle system of the present invention has been described based on the embodiment. However, the present invention is not limited to this embodiment. It is to be understood that various changes and modifications may be made without departing from the scope of the invention.

In the above embodiment, the FFU is disposed in each of the clean rooms, and one clean room and one FFU are associated with each other in the related diagram. However, the FFU can also be provided with respect to a plurality of clean rooms, and the related charts cause a plurality of clean rooms to be associated with one FFU. At this time, a plurality of clean rooms associated with one FFU are one area forming the present invention. Further, a plurality of FFUs may be provided in one clean room, and one clean room and a plurality of FFUs may be associated with each other in the related chart. In addition, the degree of cleanliness is not only two types of normal and abnormal, but also can be divided into several stages.

In order to realize the above-described configuration, for example, a graph optimization unit is provided in the controller, and a particle counter or the like for measuring the cleanliness of the clean room is provided in the clean room. The chart optimization unit increases or decreases the number of clean rooms associated with the FFU in the relevant chart based on the measurement result of the cleanliness. That is, when the cleanliness of the chart optimization unit is lower than the critical value in one of the clean rooms, in the related chart, the correlation with the FFU of the clean room to which the clean air is supplied to the clean room below the critical value is reduced. The number of dust chambers. On the other hand, when the cleanliness of one of the clean rooms is higher than the critical value, the relevant chart increases the number of clean rooms associated with the FFU of the clean room supplied to the clean room with a cleanliness above the critical value.

[Industrial availability]

The present invention can be utilized in a transport vehicle system, and can be particularly utilized in a transport vehicle system including an FFU.

1. . . Stacking crane

2. . . Carrier

4, 54. . . FFU

5. . . path

6. . . Walking track

8. . . article

14. . . Pipeline

16. . . Outer wall

20, 21. . . Spray outlet

twenty two. . . pillar

30, 60. . . Institutional department

31, 61. . . Control department

32, 62. . . Display department

33, 63. . . Input section

34, 64, 68. . . Communication I/F Department

35, 65. . . Handling condition determination unit

36, 66. . . Refuge instruction generation unit

37. . . Scaffolding Data Update Department

39, 69. . . Memory department

40, 70. . . Related chart

41. . . Shelving data

42, 72. . . FFU status confirmation unit

50. . . Controller

51. . . Van

53. . . Clean room

67. . . Room data update department

71. . . Room data

1 is a cross-sectional view of a clean room for a clean room according to a first embodiment of the present invention (a horizontal cross-sectional view of a portion directly above the FFU).

Fig. 2 is a cross-sectional view (a vertical cross-sectional view) of the automatic warehouse of the same embodiment.

Fig. 3 is a block diagram showing a functional configuration of an automatic warehouse in the same embodiment.

Fig. 4 is a diagram showing an example of a related chart.

Fig. 5 is a view showing an example of scaffolding data.

Fig. 6 is a flow chart for explaining the article transporting operation of the automatic warehouse in the same embodiment.

Fig. 7 is a view for explaining the operation of determining the conveyance path and the conveyance speed.

Fig. 8 is a view for explaining the operation of determining the conveyance path and the conveyance speed.

Fig. 9 is a flow chart for explaining an article evacuation operation of the automatic warehouse in the same embodiment.

Fig. 10 is a schematic configuration diagram of a transport vehicle system according to a second embodiment of the present invention.

Fig. 11 is a block diagram showing a functional configuration of a controller and a transport vehicle of the transport vehicle system of the same embodiment.

Fig. 12 is a diagram showing an example of a related chart.

Fig. 13 is a view showing an example of room data.

Fig. 14 is a flow chart for explaining the article transporting operation of the transport vehicle system of the same embodiment.

Fig. 15 is a view for explaining the operation of determining the conveyance path and the conveyance speed.

Fig. 16 is a view for explaining the operation of determining the conveyance path and the conveyance speed.

Fig. 17 is a flow chart for explaining an article evacuation operation of the transport vehicle system of the same embodiment.

30. . . Institutional department

31. . . Control department

32. . . Display department

33. . . Input section

34. . . Communication I/F Department

35. . . Handling condition determination unit

36. . . Refuge instruction generation unit

37. . . Scaffolding Data Update Department

39. . . Memory department

40. . . Related chart

41. . . Shelving data

42. . . FFU status confirmation unit

Claims (5)

A transport vehicle system is a transport vehicle system that uses a transport vehicle to transport articles, and is characterized in that each of the fan filter units stores a related chart relating to an area of a storage item to which clean air is supplied by the fan filter unit. When the memory unit and any of the fan filter units are abnormal, the transport control unit controls the transport vehicle so that the contamination of the area related to the fan filter unit in which the abnormality has occurred is not increased, and the transport control unit determines the transport of the transport vehicle. The path is such that, in the event of an abnormality in any of the fan filter units, the area associated with the fan filter unit in which the abnormality has occurred is not passed through the related chart. A transport vehicle system is a transport vehicle system that uses a transport vehicle to transport articles, and is characterized in that each of the fan filter units stores a related chart relating to an area of a storage item to which clean air is supplied by the fan filter unit. When the memory unit and any of the fan filter units are abnormal, the transport control unit controls the transport vehicle so that the contamination of the area related to the fan filter unit in which the abnormality has occurred is not increased, and the transport control unit determines the transport of the transport vehicle. The speed is such that, in the case where an abnormality occurs in any of the fan filter units, the speed in the relevant map relating to the fan filter unit in which the abnormality occurs is lower than the speed in the other regions. A transport vehicle system is a transport vehicle system that uses a transport vehicle to transport articles, and is characterized in that each of the fan filter units stores a related chart relating to an area of a storage item to which clean air is supplied by the fan filter unit. When the memory unit and any of the fan filter units are abnormal, the transport vehicle is controlled so that the contamination control unit in the area related to the fan filter unit in which the abnormality has occurred is not enlarged, and the transport control unit is in any of the fan filter units. When an abnormality occurs, the article stored in the relevant chart and the area related to the fan filter unit in which the abnormality has occurred is prevented from being bypassed to another area. The vehicle system according to any one of the preceding claims, wherein the transport vehicle system is a carrier including a plurality of scaffolds for storing articles; and a fan filter unit for supplying the scaffold clean air And the automatic warehouse of the stacking crane for carrying the articles, the above-mentioned conveyance control unit controls the stacker crane so that the pollution of the scaffolding in the above area is not expanded to other scaffoldings and articles. The vehicle system according to any one of the preceding claims, wherein the transport vehicle system includes: a plurality of clean rooms for storing articles; and a fan filter for supplying clean air to the clean room The unit and the transport vehicle carrying the article, the transport control unit controls the transport vehicle so that the contamination of the clean room in the area is not expanded to other clean rooms and articles.