JP5796745B2 - Goods transport equipment - Google Patents

Description

  In the present invention, a plurality of article storage shelves in which a plurality of storage units for storing articles are arranged side by side along the shelf width direction are provided side by side along the shelf front-rear direction, and in front of the article storage shelf, along the shelf width direction. A plurality of conveyance vehicle movement paths formed in the longitudinal direction of the shelf, and an article conveyance vehicle configured to move the conveyance vehicle movement path along the lateral width direction of the shelf and convey an article to the storage unit, A carriage movement path formed along the shelf front-rear direction is moved laterally to the article storage shelf and the conveyance vehicle movement path, and is movable to a stop position corresponding to each of the plurality of conveyance vehicle movement paths. A traverser is provided, and the article transporter is configured to be movable between the transporter moving path and the traverser stopped at the stop position corresponding to the transporter moving path. Place the transport vehicle An article transport facility which is movably configured along the carriage movement path in the state.

Such an article transport facility is configured to be provided with a traverser that is movable to a stop position corresponding to each of a plurality of travel routes in a state where the article transport vehicle is placed, and to move the article transport vehicle between the plurality of travel routes. Therefore, the configuration is simplified compared to the configuration in which the article transport vehicle is provided in each of the plurality of travel routes.
In such an article transport facility, conventionally, a plurality of article storage shelves are provided along the carriage movement path on one side of the carriage movement path along which the traverser moves, and on the front side of these article storage shelves. A conveyance vehicle moving route was formed (see, for example, Patent Document 1).

JP-A-9-156720

In the article transport facility described above, for example, in order to store articles in different environments, there are a plurality of stores in which a carriage moving section in which a carriage moving path is formed and an article storage shelf are provided and a conveying vehicle moving path is formed. It can be considered that each of the sections is partitioned by a partition wall, and the carriage moving section and the plurality of storage sections are set in different environments.
When the article transport equipment is configured in this way, in order to appropriately maintain the environment in each storage section, the entrance and exit for the article transport vehicle to move and pass through the partition wall and the air flow of the entrance and exit are provided. It is conceivable to provide a flow suppressing means for suppressing the environment of the storage compartment.

  In the case of such an article transport facility, when the storage compartment is divided into a plurality of compartments along the width of the shelf, for example, because a large installation space cannot be secured in the longitudinal direction of the shelf, When the article transport vehicle is moved to the storage compartment on the side, the article transport vehicle needs to pass through the front storage compartment close to the carriage moving path. Therefore, the air in the carriage moving section and the rear storage section flows into the front storage section due to the passage of the article transport vehicle, and it becomes difficult to maintain the environment of the front storage section.

  The present invention has been made in view of the above circumstances, and its purpose is to maintain the environment of each of the plurality of storage compartments even when a plurality of storage compartments are provided in the direction along the shelf width direction. It is in the point which provides the easy article conveyance equipment.

In the article transport facility according to the present invention, a plurality of article storage shelves in which a plurality of storage units for storing articles are arranged side by side along the width direction of the shelf are provided side by side along the shelf front-rear direction. A plurality of transport vehicle movement paths formed along the shelf width direction are formed in the front-rear direction of the shelf, and the articles are transported to the storage unit by moving along the shelf width direction of the transport vehicle. An article transporting vehicle and a stop corresponding to each of the plurality of transporting vehicle moving paths by moving a cart moving path formed along the shelf front-rear direction to the lateral side of the article storage shelf and the transporting vehicle moving path. A traverser that is movable to a position, and the article transporting vehicle is configured to be movable between the transporting vehicle moving path and the traverser stopped at the stop position corresponding to the transporting vehicle moving path, Traverser is in front Be those which are movably configured along the carriage movement path in a state of placing the article transport vehicle, a first feature structure,
A carriage moving section in which the article storage shelves are provided on both sides in the shelf width direction with respect to the carriage moving path, the transfer vehicle moving path is formed, and the carriage moving path is formed, and the carriage moving path A first storage section in which the article storage shelf is provided and is located on one side in the horizontal direction of the shelf and in which the transport vehicle movement path is formed, and the other in the horizontal direction of the shelf with respect to the carriage movement path A partition wall is provided to partition the second storage section, which is located on the side and is provided with the article storage shelf and in which the transport vehicle movement path is formed, and the carriage movement section and the first storage section are provided on the partition wall. A first entrance / exit for allowing the article transport vehicle to pass between the compartments, a first flow restraining means for restraining the air flow through the first entrance / exit, the carriage moving compartment and the second storage compartment. The goods transport vehicle between A second entrance / exit for excessive movement and a second passage restraining means for restraining air flow through the second entrance / exit are provided, and the carriage moving section, the first storage section, and the second storage section are provided. Is set in a different environment, and the first light projecting means for projecting horizontally on the traverser toward one side in the shelf width direction and the first projecting means for projecting horizontally toward the other side in the shelf width direction. 2 light projecting means, and the article transport vehicle is set to a position set on the traverser and in a state of being located on one side of the shelf width direction from the set position, the light projecting means from the first light projecting means. A first light-projected portion that is irradiated with light, and a second light-projected portion that is irradiated with light from the second light projecting unit in a state of being located on the other side in the shelf width direction from the set position and the set position. And a light projecting unit, wherein the first light projecting means The second light projecting means is provided on the traverser so as to be positioned on the other side in the lateral width direction of the shelf with respect to the first light projecting portion in a state where the article transport vehicle is placed at the set position of the servo. Is provided on the traverser so as to be positioned on one side in the horizontal width direction of the shelf with respect to the second light-projected portion in a state where the article transport vehicle is placed at a setting position of the traverser. The first light projecting unit is irradiated with light emitted from the first light projecting unit so that the first light projecting unit and the first light projecting unit are opposed to each other in a state where the light projecting unit and the first light projecting unit are overlapped in the width direction of the shelf. Crossing the first light projecting unit or the first light projecting unit with the shelf width direction so that the first light projecting unit and the first light projecting unit do not overlap in the shelf width direction view. A first retracted state in which the shelf is retracted in the direction in which the second light projecting unit and the second light projected unit are A second light projecting state in which the light projected from the second light projecting unit is opposed to each other in a state of overlapping in a direction view, and the second light projecting unit is irradiated, and the second light projecting unit and the second light projecting unit The projector is switched to a second retreat state in which the second light projecting means or the second light projecting portion is retracted in a direction intersecting the shelf width direction so that the light projection portion does not overlap with the shelf width direction. An optical switching device is provided .

  That is, the carriage movement section in which the carriage movement path is formed, the first storage section located on one side in the shelf width direction with respect to the carriage movement path, and the position on the other side in the shelf width direction with respect to the carriage movement path A first entrance through which the article transport vehicle passes and moves between the carriage moving section and the first storage section by the first air flow suppressing means. The air flow at the second doorway is suppressed by the second air flow suppression means so that the article transport vehicle moves between the carriage moving section and the second storage section. Therefore, it becomes easy to maintain the environment of the first storage section and the second storage section.

The first storage section is located on one side in the shelf width direction with respect to the carriage movement path, and the second storage section is located on the other side in the shelf width direction with respect to the carriage movement path. When the transport vehicle moves from the cart movement space to the first storage section or when the transport vehicle moves from the first storage section to the cart movement space, the article transport vehicle can move without passing through the second storage section. When the article transport vehicle moves from the cart movement space to the second storage space, or when the article transport vehicle moves from the second storage space to the cart movement space, the article transport vehicle can move without passing through the first storage space. .
Thus, even when a plurality of conveyance sections are provided along the shelf width direction, it becomes easy to maintain the respective environments of the plurality of storage sections.

Further, according to the first feature configuration, the first light projecting switch is configured to perform the first light projecting by the light projecting switching device in a state where the article transport vehicle is positioned on the traverser and located on one side of the shelf width direction from the set position. By switching the positional relationship between the means and the first projecting portion to the first projecting state, it is possible to project light from the first projecting device of the traverser to the first projecting portion of the article transport vehicle.
Further, in the state where the article transporting vehicle is located on the other side in the shelf width direction from the set position set on the traverser, the second light projecting unit and the second light projected unit in the light projection switching device. Can be projected from the second projecting means of the traverser to the second projecting portion of the article transport vehicle.
Thus, even when the first storage section is provided on one side of the shelf width direction with respect to the carriage movement path and the second storage section is provided on the other side, the first storage section and the second storage section can article transport vehicle be positioned, for projecting to the article transport vehicle.

According to a second characteristic configuration of the article conveyance facility according to the present invention, in the first characteristic configuration, switching control means for controlling the operation of the light projection switching device is provided, and the switching control means is configured such that the article conveyance vehicle is the first characteristic configuration. When moving from one storage section to the second storage section, after switching from the first retracted state to the first light projecting state, switching from the second light projecting state to the second retracted state, the article transport vehicle When moving from the second storage section to the first storage section, after switching from the second retracted state to the second light projecting state, to switch from the first light projecting state to the first retracted state, In the point which is comprised so that the action | operation of the said light projection switching apparatus may be controlled.

That is, after the article transport vehicle has moved from the first storage section to the set position on the traverser, after switching from the first retracted state to the first light projecting state, the second light projecting state is switched to the second retracted state, and thereafter By moving the article transport vehicle to the second storage section, while the article transport vehicle moves from the first storage section to the second storage section, it continues from the light projecting means of the traverser to the projected part of the article transport vehicle. Can be projected.
Further, after the article transport vehicle has moved from the second storage section to the set position on the traverser, the second light-emitting state is switched to the second light-projecting state, and then the first light-projecting state is switched to the first retraction state. By moving the article transport vehicle to the first storage section, while the article transport vehicle moves from the second storage section to the first storage section, it continues from the light projecting means of the traverser to the projecting portion of the article transport vehicle. Can be projected.
Thus, while the article transport vehicle moves between the first storage section and the second storage section, it is possible to continuously project light from the light projecting means of the traverser to the projecting portion of the article transport vehicle.

According to a third characteristic configuration of the article conveyance facility according to the present invention, in the first or second characteristic configuration, the first light projecting unit and the second light projecting unit transmit conveyance information to the article transport vehicle by optical transmission. The first light projecting unit is configured to receive light projected from the first light projecting unit, and the second light projecting unit is configured to receive light from the second light projecting unit. Conveyance control configured to receive light projection, wherein the article transport vehicle controls the operation of the article transport vehicle based on transport information received by the first light projecting unit and the second light projecting unit. It is in the point comprised with the apparatus.

  That is, even when the first storage section is provided on one side of the shelf width direction with respect to the carriage movement path and the second storage section is provided on the other side, the article transport vehicle is in the first storage section and the second storage section. In the position, the conveyance information can be transmitted to the article conveyance vehicle by optical transmission, and the conveyance control device can transmit the conveyance destination information of the article and the stop position information of the article conveyance vehicle transmitted as the conveyance information. The operation of the article transport vehicle can be controlled based on the information necessary to transport the article.

According to a fourth characteristic configuration of the article conveyance facility according to the present invention, in any one of the first to third characteristic configurations, the first flow suppression unit is a first opening / closing door that opens and closes the first entrance / exit. The second flow restricting means is constituted by a second opening / closing door that opens and closes the second doorway, and the first opening / closing door is in the closed state of the first opening / closing door. And a first auxiliary opening / closing door that opens and closes the first opening, and the second opening / closing door is in the closed state of the second opening / closing door. And a second auxiliary opening / closing door that opens and closes the second opening, and includes the first opening / closing door, the second opening / closing door, and the second opening / closing door. An opening / closing device for opening / closing the first auxiliary opening / closing door and the second auxiliary opening / closing door, and an opening / closing device for controlling the operation of the opening / closing device; Closing control means is provided, and the opening / closing control means opens the first opening / closing door when the article transport vehicle passes through the first doorway, and the article transport vehicle passes through the first doorway. The first opening / closing door is closed later, and the first auxiliary opening / closing door is opened while the article transport vehicle enters the first storage compartment in the closed state of the first opening / closing door. The first auxiliary opening / closing door is closed while the article transporting vehicle is leaving the first storage compartment, and the second opening / closing door is opened when the article transporting vehicle passes the second doorway. The second opening / closing door is closed after the article transporting vehicle has passed through the second doorway, and the article transporting vehicle enters the second storage compartment when the second opening / closing door is closed. While the second It is configured to control the operation of the opening / closing device so that the auxiliary opening / closing door is opened and the second auxiliary opening / closing door is closed while the article transport vehicle is leaving the second storage compartment. There is in point.

That is, while the article transport vehicle enters the first storage compartment, the first door is closed by the first opening / closing door, so that the environment of the first storage compartment can be easily maintained. In addition, even when the first door is closed by the first opening / closing door, the first auxiliary opening / closing door is open while the article transport vehicle enters the first storage compartment. Light can be projected to the article transport vehicle in the first storage section through the first opening.
And while the article transport vehicle is leaving the first storage compartment, the first doorway is closed by the first door, and the first opening is closed by the first auxiliary door, Furthermore, it becomes easy to maintain the environment of the first storage section.
Similarly, for the second storage section, while the article transport vehicle is entering the second storage section, it is easy to maintain the environment of the second storage section, and the second storage section is opened through the second opening. In the state where the article transport vehicle can project light and the article transport vehicle has left the first storage section, the second entrance and the second opening are closed, so that the environment of the second storage section is further maintained. It becomes easy.

Top view of the goods transport facility Side view of goods transport vehicle and traverser Traverser front view The top view which shows the state where the stacker crane is located in the 2nd division The top view which shows the state where the stacker crane is located in the 2nd doorway The top view which shows the state where the stacker crane is located in the loading position on the traverser The top view which shows the state where the stacker crane is located in the 1st division Conveying action diagram of article conveying equipment Diagram showing opening and door Control block diagram

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the article transport facility is provided with a plurality of article storage shelves 2 in which a plurality of storage units 1 for storing articles are arranged in parallel in the vertical direction and the width direction of the shelf. A plurality of transport vehicle moving paths 3 formed along the shelf width direction in front of the article storage rack 2 are formed in the longitudinal direction of the shelf, and the transport vehicle moving paths 3 are moved along the shelf width direction for storage. A stacker crane 4 as an article transporting vehicle for transporting an article to the section 1, and a carriage moving path 5 formed along the shelf front-rear direction on the lateral sides of the article storage rack 2 and the transporting vehicle moving path 3 In addition, a traverser 6 that is movable to a stop position corresponding to each of the plurality of transport vehicle moving paths 3 is provided.
In describing the shelf width direction, as shown in FIG. 1, one side in the shelf width direction (right side in FIG. 1) is referred to as the transport vehicle HP side, and the other side in the shelf width direction (left side in FIG. 1) is the transport vehicle. It is called the OP side. Further, in describing the shelf front-rear direction, one side in the shelf front-rear direction (lower side in FIG. 1) is referred to as a cart HP side, and the other side in the shelf front-rear direction (upper side in FIG. 1) is referred to as a cart OP side.

  The article storage shelves 2 are provided on both sides in the width direction of the shelf with respect to the cart movement path 5, and the conveyance vehicle movement path 3 is formed. In other words, a pair of article storage shelves 2 provided in a state of being opposed to each other as a pair, three sets of article storage shelves 2 are provided on the transport vehicle HP side and the transport vehicle OP side with respect to the carriage movement path 5. It has been. A transport vehicle moving path 3 is formed between each of the six sets of article storage shelves 2. The article storage shelf 2 is provided in a fixed position on the floor surface.

The stacker crane 4 is configured to be movable between the transporter moving path 3 and the traverser 6 stopped at the stop position corresponding to the transporter moving path 3, and the traverser 6 is in a state where the stacker crane 4 is placed. It is configured to be movable along the cart movement path 5.
Then, as shown in FIG. 8, the traveling movement of the stacker crane 4 and the traveling movement of the traverser 6 in a state where the stacker crane 4 is placed and supported result in a movement between the storage device 1 and the storage unit 1 of the article storage shelf 2. It is comprised so that it may convey.

[Stacker crane]
As shown in FIGS. 2 and 3, the stacker crane 4 is guided by a single floor-side rail 11 installed on the floor side and travels along the transport vehicle moving path 3. A pair of front and rear columns 13 erected on the carriage 12; an upper frame 15 connected to the upper ends of the pair of front and rear columns 13 and guided by a single ceiling-side rail 14 installed on the ceiling; A guided body 16 that is supported by each of the pair of front and rear columns 13 and is guided by contact with the guide body 25 of the traverser 6, and a lifting body 17 that is guided and supported so as to be movable up and down along the columns 13. Has been. On the elevating body 17, a transfer device 18 for transferring an article between the storage unit 1 of the article storage shelf 2 or the loading / unloading device 7 and itself is placed and supported.

The traveling carriage 12 includes a pair of front and rear traveling wheels 19 that roll on the floor rail 11, and a floor guide roller that is positioned on both sides of the floor rail 11 in the width direction and is guided by contact with the floor rail 11. 20 and a current collector 22 that contacts the power supply rail 10 to receive power. The upper frame 15 is provided with ceiling-side guide rollers 21 that are positioned on both sides of the ceiling-side rail 14 in the lateral width direction and are guided by contact with the ceiling-side rail 14.
Then, one of the pair of front and rear traveling wheels 19 is rotationally driven by the transport vehicle electric motor 4b, so that the travel cart 12 is guided by the floor side rail 11 and the floor side rail 11 is moved in the transport vehicle travel direction. The upper frame 15 is configured to move along the traveling direction of the transport vehicle while being guided by the ceiling-side rail 14.
The traveling wheel 19, the floor guide roller 20, and the column 13 are provided at the center of the traveling carriage 12 in the lateral width direction. As shown in FIG. 9, the ceiling-side rail 14 is provided at a position shifted in the shelf front-rear direction with respect to the floor-side rail 11.

[Traverser]
As shown in FIGS. 2 and 3, the traverser 6 includes a carriage main body 24 that is guided by a pair of carriage rails 23 installed on the floor side and travels along the carriage movement path 5. And a guide body 25 for guiding the stacker crane 4 traveling and moving along the shelf lateral width direction.

The carriage main body 24 includes a pair of front and rear carriage traveling wheels 26 that roll on the carriage rail 23, and a carriage guide roller that is positioned on both sides of the carriage rail 23 in the lateral width direction and guided by contact with the carriage rail 23. 27 are provided.
Two sets of the carriage traveling wheel 26 and the carriage guide roller 27 are provided corresponding to each of the pair of carriage rails 23.
Then, by rotating one of the pair of front and rear bogie traveling wheels 26 by using the bogie electric motor 6b (see FIG. 3), the bogie main body 24 is guided by the bogie rail 23 while moving on the bogie rail 23. It is comprised so that it may drive | work along a trolley | bogie traveling direction.

A single auxiliary rail 28 is provided on the upper surface of the carriage main body 24 at the same height as the floor rail 11, and this auxiliary rail 28 stops the traverser 6 at a stop position corresponding to the transport vehicle moving path 3. By doing so, it is adjacent to the floor-side rail 11 provided in the transport vehicle moving path 3. Therefore, in a state in which the traverser 6 is stopped at the stop position, the stacker crane 4 moves between the floor side rail 11 on the HP side in the lateral direction of the shelf and the auxiliary rail 28, thereby moving the transport vehicle on the transport vehicle HP side. It is possible to move between the path 3 and the traverser, and by transferring between the floor rail 11 and the auxiliary rail 28 on the transport vehicle OP side, the transport vehicle moving path 3 on the transport vehicle OP side and on the traverser And can move between.
In this way, the stacker crane 4 can move on the traverser 6 from the transport vehicle moving path 3 on both sides in the shelf width direction, and the stacker crane on the transport vehicle moving path 3 on both sides in the shelf width direction from the traverser 6. 4 is configured to be movable.

The guide body 25 is provided at the same height as the guided body 16 of the stacker crane 4. A pair of the guide bodies 25 are provided so as to be positioned on both sides of the stacker crane 4 moving on the traverser 6 in the longitudinal direction of the shelf. When the stacker crane 4 moves on the traverser 6 with the guide bodies 25, The guided body 16 of the stacker crane 4 is contacted and guided in the lateral width direction of the shelf, and the stacker crane 4 is restricted from tilting in the longitudinal direction of the shelf.
4 to 7, illustration of the guide body 25 is omitted.

As shown in FIGS. 3 to 7, the cart body 24 includes a first restricting body 29 that restricts the stacker crane 4 from moving from the placement position to the transport vehicle OP side, and the stacker crane 4 from the placement position. A second restricting body 30 that restricts movement toward the transport vehicle HP is provided. The first restricting body 29 is provided on the transport vehicle OP side from the stacker crane 4 positioned at the mounting position, and the second restricting body 30 is provided on the transport vehicle HP side from the stacker crane 4 positioned at the mounting position. It has been.
Each of the first restrictor 29 and the second restrictor 30 protrudes on the movement path of the stacker crane 4 to restrict the movement of the stacker crane 4 and the restriction release position retracted from the movement path of the stacker crane 4. It is configured to be freely movable.

  Although illustration is omitted, the cart body 24 is provided with an auxiliary feeding rail that feeds power to the current collector 22 of the stacker crane 4 that travels on the cart body 24. The auxiliary power supply rail is configured to be slidable along the shelf width direction. When the stacker crane 4 is moved between the first storage section E1 and the carriage movement section E0, the auxiliary power supply rail is slid toward the transport vehicle HP. When the stacker crane 4 is moved between the second storage section E2 and the carriage moving section E0 and moved adjacent to the power supply rail 10 of the first storage section E1, it is slid to the transport vehicle OP side and second It is made to adjoin the electric power supply rail 10 of the storage section E2.

[Optical transceiver]
As shown in FIG. 1, a ground side optical transmission device 34 is provided on the cart HP side of the cart movement path 5, and a movement side optical transmission device 35 is provided on the traverser 6.
The ground-side optical transmission device 34 is provided so as to project light horizontally toward the moving-side optical transmission device 35 of the traverser 6 located on the cart OP side, and to receive the light projection from the moving-side optical transmission device 35. It has been. The movement-side optical transmission device 35 is provided so as to project light horizontally toward the ground-side optical transmission device 34 located on the cart HP side, and to receive the light projection from the ground-side optical transmission device 34.
The ground-side optical transmission device 34 and the moving-side optical transmission device 35 of the traverser 6 thus configured are configured to transmit and receive carrier information by optical wireless transmission.

As shown in FIGS. 4 to 7, the traverser 6 is provided with a first cart side optical transmission device 37 as a first light projecting unit and a second cart side optical transmission device 38 as a second projecting unit. Yes. Further, the stacker crane 4 is provided with a first transport vehicle side optical transmission device 39 as a first floodlighted portion and a second transport vehicle side optical transmission device 40 as a second floodlighted portion.
As shown in FIGS. 6 and 7, the first carriage-side optical transmission device 37 projects light horizontally toward the transport vehicle HP, and receives the projection from the first transport vehicle-side optical transmission device 39. It is provided to do. The first transport vehicle side optical transmission device 39 is provided so as to project light horizontally toward the transport vehicle OP side and receive the light projection from the first cart side optical transmission device 37.
Also, as shown in FIGS. 4 to 6, the second carriage side optical transmission device 38 projects light horizontally toward the transport vehicle OP side, and receives the light projected from the second transport vehicle side optical transmission device 40. It is provided to do. The second transport vehicle side optical transmission device 40 is provided so as to project light horizontally toward the transport vehicle HP side and receive the light projection from the second cart side optical transmission device 38.
The first carriage side optical transmission device 37 of the traverser 6 and the first carrier side optical transmission device 39 of the stacker crane 4 configured as described above are configured to transmit and receive conveyance information by optical transmission. The second carriage-side optical transmission device 38 of No. 6 and the second carriage-side optical transmission device 40 of the stacker crane 4 are configured to transmit and receive conveyance information by optical transmission.

Next, the first carriage side optical transmission device 37, the second carriage side optical transmission device 38, the first carrier side optical transmission device 39, and the second carrier side optical transmission device 40 will be described.
As shown in FIGS. 4 to 7, the first carriage-side optical transmission device 37 is provided at the end of the carriage main body 24 of the traverser 6 on the carrier OP side, and the first carriage-side optical transmission device 39 is It is provided at the OP side end of the traveling carriage 12 of the stacker crane 4, and the first carriage side optical transmission device 37 and the first transporter side optical transmission device 39 are opposed to each other in a state where they overlap each other when viewed in the lateral direction of the shelf. It is provided in the state to do.
The second carriage-side optical transmission device 38 is provided at the end of the carriage main body 24 of the traverser 6 on the transport vehicle HP side, and the second carriage-side optical transmission device 40 is provided on the traveling carriage 12 of the stacker crane 4. The second carriage side optical transmission device 38 and the second transport vehicle side optical transmission device 40 are provided in a state of being overlapped and facing each other when viewed in the lateral direction of the shelf.

  The first carriage side optical transmission device 37 and the second carriage side optical transmission device 38 are provided at a wider interval than the interval between the first conveyance vehicle side optical transmission device 39 and the second conveyance vehicle side optical transmission device 40. As shown in FIG. 6, when the stacker crane 4 is located at the placement position on the traverser 6, the first carriage-side optical transmission device 37 is transported from the first carriage-side optical transmission device 39. Located on the vehicle OP side, the second carriage-side optical transmission device 38 is located closer to the conveyance vehicle HP than the second conveyance vehicle-side optical transmission device 40.

Therefore, in the state in which the stacker crane 4 is located on the traverser 6 and on the transport vehicle HP side from the placement position, the first cart side optical transmission device 37, the first transport vehicle side optical transmission device 39, and Are opposed to each other, the light from the first carriage side optical transmission device 37 is irradiated to the first carriage side optical transmission device 39, and the projection from the first carriage side optical transmission device 39 is the first carriage side light. Irradiated to the transmission device 37, information can be transmitted and received between the first carriage side optical transmission device 37 and the first transport vehicle side optical transmission device 39.
In the state where the stacker crane 4 is placed on the traverser 6 and on the transport vehicle OP side from the placement position, the second cart-side optical transmission device 38, the second transport vehicle-side optical transmission device 40, and Are opposed to each other, the light from the second carriage side optical transmission device 38 is irradiated to the second carriage side optical transmission device 40, and the projection from the second carriage side optical transmission device 40 is the second carriage side light. Irradiated to the transmission device 38, information can be transmitted and received between the second carriage side optical transmission device 38 and the second carrier side optical transmission device 40.
The placement position corresponds to a set position set on the traverser 6.

  The first carriage-side optical transmission device 37, the second carriage-side optical transmission device 38, the first conveyance vehicle-side optical transmission device 39, and the second conveyance vehicle-side optical transmission device 40 are provided so as to overlap with each other when viewed in the width direction of the shelf. The first light projection switching device 42 and the second light projection switching device 43 that move the optical transmission devices are arranged so that the optical transmission devices do not interfere with each other when the stacker crane 4 moves along the shelf width direction. Is provided.

The first light projection switching device 42 includes a first light projection state in which the first carriage side optical transmission device 37 and the first transport vehicle side optical transmission device 39 are opposed to each other in a state where they overlap each other when viewed in the lateral direction of the shelf, The first trolley side optical transmission device 37 is retracted in an upward direction that intersects the shelf width direction so that the trolley side optical transmission device 37 and the first transport vehicle side optical transmission device 39 do not overlap in the shelf width direction view. The first retreat state is switched.
The second light projecting switching device 43 includes a second light projecting state in which the second carriage side optical transmission device 38 and the second transport vehicle side optical transmission device 40 are opposed to each other in a state where they overlap each other when viewed in the lateral direction of the shelf, The second cart side optical transmission device 38 is switched to the second retracted state in which the second cart side optical transmission device 38 is retracted upward so that the cart side optical transmission device 38 and the second transport vehicle side optical transmission device 40 do not overlap with each other when viewed in the lateral direction of the shelf. It is configured.

The first light projection switching device 42 and the second light projection switching device 43 constitute a light projection switching device 41. In this light projection switching device 41, the first light projection state, the first retraction state, and the second It is configured to switch between the light projection state and the second retreat state.
In the first switching state, the light from the first carriage side optical transmission device 37 is irradiated to the first carrier side optical transmission device 39, and in the second switching state, the projection from the second carriage side optical transmission device 38 is performed. Light projection is applied to the second transport vehicle side optical transmission device 40.

In the state where the stacker crane 4 is placed on the traverser 6 and the transport vehicle HP side from the placement position, the first light emission switching device 42 switches to the first light emission state, By switching to the second retracted state with the two-light-projection switching device 43, the stacker crane 4 can travel and move while transmitting and receiving information between the first carriage-side optical transmission device 37 and the first transport vehicle-side optical transmission device 39. It has become.
Further, when the stacker crane 4 is located on the traverser 6 and in the state where the stacker crane 4 is located closer to the transport vehicle OP than the placement position, the first light emission switching device 42 switches to the first retracted state, and the second By switching to the second light projection state by the light projection switching device 43, the stacker crane 4 can travel and move while transmitting and receiving information between the second carriage side optical transmission device 38 and the second transport vehicle side optical transmission device 40. It has become.
When the stacker crane 4 is located at the placement position, the first light projection switching device 42 switches to the first light projection state, and the second light projection switching device 43 switches to the second light projection state. The first carriage-side optical transmission device 37 and the first conveyance vehicle-side optical transmission device 39, and the second carriage-side optical transmission device 38 and the second conveyance vehicle-side optical transmission device 40 can transmit and receive conveyance information. Yes.
As described above, the first cart-side light transmission device 37 and the first transport vehicle-side light are used when the stacker crane 4 is located in any of the cart movement zone E0, the first storage zone E1, and the second storage zone E2. The transmission information is always transmitted and received by the transmission device 39 or at least one of the pair of optical transmission devices of the second carriage side optical transmission device 38 and the second transport vehicle side optical transmission device 40.

[Partition]
As shown in FIG. 1, the article transport facility includes a cart moving section E0 in which a cart moving path 5 is formed, a first storage section E1 located on the transport vehicle HP side with respect to the cart moving path 5, and a cart. A partition wall 46 is provided for partitioning the second storage section E2 located on the transport vehicle OP side with respect to the movement path 5.
Further, the partition wall 46 divides each of the first storage section E1 and the second storage section E2 into three small sections e. Each subcompartment e is configured so that the temperature in the subcompartment can be set individually. For example, all the temperatures of the six subcompartments e can be set to the same temperature, or all the temperatures of the six subcompartments e can be set. Different temperatures can be set. In the present embodiment, the three small sections e belonging to the first storage section E1 and the three small sections e belonging to the second storage section E2 are set to different temperatures, and the first storage section E1 and the second storage section E2 are set. Are set in different environments.

  The first storage section E1 is provided with an article storage shelf 2 located on the transport vehicle HP side with respect to the carriage movement path 5, and the transport vehicle movement path 3 is formed on the front side of the article storage shelf 2. Yes. The second storage section E2 is provided with an article storage shelf 2 located on the transport vehicle OP side with respect to the cart movement path 5, and a transport vehicle movement path 3 on the front side of the article storage shelf 2 is formed. Yes. A set of article storage shelves 2 is provided in each of the small sections e belonging to the first storage section E1 and the second storage section E2, and a transport vehicle is provided between the set of article storage shelves 2. A movement path 3 is formed.

The partition wall 46 has a first door 47 for the stacker crane 4 to move between the carriage movement section E0 and the first storage section E1, a first opening / closing door 48 for opening and closing the first door 47, and the carriage. A second doorway 49 through which the stacker crane 4 passes and moves between the moving section E0 and the second storage section E2 and a second door 50 that opens and closes the second doorway 49 are provided.
The first opening / closing door 48 corresponds to a first flow suppressing means for suppressing air flow through the first inlet / outlet 47, and the second opening / closing door 50 suppresses air flow through the second inlet / outlet 49. This corresponds to the second flow suppression means.

  The 1st entrance 47 is provided corresponding to each of the conveyance vehicle movement path | route 3 currently formed in the 1st storage division E1, and is provided in three places in total. Similarly, the second doorway 49 is provided corresponding to each of the transport vehicle moving paths 3 formed in the second storage section E2, and is provided at a total of three locations.

  And the floor side rail 11 and the ceiling side rail 14 pass through the 1st entrance / exit 47, and are extended to the trolley | bogie movement division E0 about what is provided in the 1st storage division E1, and are 2nd storage. About what is provided in the division E2, it passes through the 2nd entrance / exit 49, and is extended to the trolley | bogie movement division E0. Therefore, the first opening / closing door 48 and the second opening / closing door 50 have a floor-side opening 52 for passing the floor-side rail 11 in the closed state and a ceiling-side opening 53 for passing the ceiling-side rail 14 in the closed state. And are formed.

As shown in FIG. 9, the first opening / closing door 48 has a first opening 54 through which light from the first carriage side optical transmission device 37 and the first transport vehicle side optical transmission device 39 passes, and a first opening portion. A first auxiliary opening / closing door 55 that opens and closes 54 is provided. Therefore, even when the first opening / closing door 48 is in the closed state, communication by optical transmission can be performed with the stacker crane 4 in the first storage section E1, and the first opening / closing door 55 is in the closed state. By closing 54, it is easy to maintain the environment in the first storage section E1.
Similarly, the second opening / closing door 50 has a second opening 56 through which light from the second carriage side optical transmission device 38 and the second carrier side optical transmission device 40 passes, and a second opening 56. A second auxiliary opening / closing door 57 that opens and closes is provided.
Incidentally, the 1st auxiliary | assistant opening / closing door 55 and the 2nd auxiliary | assistant opening / closing door 57 are comprised so that it may retract | save from the movement path | route of the stacker crane 4 by making it an open state.

In addition, a first opening / closing device 59 that switches the first opening / closing door 48 between an open state and a closed state, a second opening / closing device 60 that switches the second opening / closing door 50 between an open state and a closed state, and a first A first auxiliary opening / closing device 61 for switching the auxiliary opening / closing door 55 between an open state and a closed state and a second auxiliary opening / closing device 62 for switching the second auxiliary opening / closing door 57 between the open state and the closed state are provided. ing.
In the first opening / closing device 59, the second opening / closing device 60, the first auxiliary opening / closing device 61, and the second auxiliary opening / closing device 62, the first opening / closing door 48, the second opening / closing door 50, the first auxiliary opening / closing door 55, and the second. 2 An opening / closing device 58 for opening / closing the auxiliary opening / closing door 57 is configured.

[Control configuration]
As shown in FIG. 10, the article transport facility controls the operation of the traverser 6 based on the ground side control device H1 that transmits transport information to the traverser 6 and the stacker crane 4 and the transport information from the ground side control device H1. A cart control device H2 that controls the operation of the stacker crane 4 based on transport information from the ground side control device H1 is provided. The cart control device H2 is provided in the traverser 6, and the transport vehicle control device H3 is provided in the stacker crane 4.

The ground side control device H1 and the cart control device H2 are configured to be able to transmit and receive information by optical transmission between the ground side optical transmission device 34 and the movement side optical transmission device 35. The cart control device H2 and the transport vehicle control device H3 are the optical transmission between the first cart side optical transmission device 37 and the first transport vehicle side optical transmission device 39, and the second cart side optical transmission device 38 and the second transport. Information is transmitted and received through optical transmission with the vehicle-side optical transmission device 40.
Transmission / reception of information between the ground side control device H1 and the transport vehicle control device H3 is performed via the cart control device H2.

  The cart control device H2 is configured to determine the travel position of the traverser 6 based on a pulse output from the cart rotary encoder 6a as the traverser 6 travels. Then, based on the transport information from the ground side control device H1, the travel position information of the stacker crane 4 from the transport vehicle control device H3, the travel position information indicating the travel position of the determined traverser 6, etc., the operation of the traverser 6 Is configured to control. Further, the cart control device H2 transmits the transport information from the ground control device H1 to the transport vehicle control device H3, and transmits the travel position information of the traverser 6 to the ground control device H1 and the transport vehicle control device H3. It is configured.

  The cart control device H <b> 2 is configured to control the operation of the first light projection switching device 42 and the second light projection switching device 43 based on the conveyance information and the travel position information of the stacker crane 4. The first light projection switching device 42 and the second light projection switching device 43 constitute a light projection switching device 41. The cart control device H2 serves as a switching control means for controlling the operation of the light projection switching device 41. Equivalent to.

  When the stacker crane 4 is located at the placement position of the traverser 6 in the carriage moving section E0, the carriage control device H2 is switched to the first projection state and the first projection switching device to switch to the second projection state. 42 and the second projection switching device 43 are configured to be controlled.

As shown in FIGS. 4 to 7, when the carriage control device H2 travels to the transport vehicle HP side and enters the first storage section E1 when traveling on the stacker crane 4, the carriage control device H2 enters the second retracted state before the start of the travel. Switching, the operation of the second light projection switching device 43 is controlled so that the stacker crane 4 moves out of the first storage section E1 and moves to the placement position on the traverser 6 to switch to the second light projection state. Has been.
Further, when the stacker crane 4 travels to the transport vehicle OP side and enters the second storage section E2, the stacker crane 4 moves out of the second storage section E2 by switching to the first retracted state before the start of the travel. Then, after moving to the mounting position on the traverser 6, the operation of the first light projection switching device 42 is controlled so as to switch to the first light projection state.

  And about the timing which switches the 1st light projection switching apparatus 42 or the 2nd light projection switching apparatus 43 to a retracted position, the trolley | bogie control apparatus H2 moves the stacker crane 4 from the 1st storage area E1 to the 2nd storage area E2. When the stacker crane 4 is moved from the first storage section E1 to the carriage moving section E0 and is positioned at the placement position on the traverser 6, the first light projection switching device 42 changes the first retracted state from the first retracted state. After switching to the light projecting state, when the second light projecting switching device 43 switches from the second light projecting state to the second retracted state and the stacker crane 4 moves from the second storage section E2 to the first storage section E1. In the state where the stacker crane 4 retreats from the second storage section E2 to the carriage moving section E0 and is positioned at the mounting position on the traverser 6, the second light projection switching device 43 causes the second light projection to be performed from the second retracted state. After switching to the state, the first projection switching device 42 controls the operation of the first projection switching device 42 and the second projection switching device 43 so as to switch from the first projection state to the first retracted state. It is configured as follows.

The transport vehicle control device H3 is configured to determine the travel position of the stacker crane 4 based on a pulse output from the transport vehicle side rotary encoder 4a as the stacker crane 4 travels. The operation of the stacker crane 4 is controlled based on the conveyance information from the cart control device H2, the travel position information of the traverser 6, and the travel position information indicating the travel position of the determined stacker crane 4. ing. The transport vehicle control device H3 is configured to transmit travel position information of the stacker crane 4 to the cart control device H2. The travel position information of the stacker crane 4 transmitted to the cart control device H2 is transmitted from the cart control device H2 to the ground side control device H1.
The transport vehicle control device H3 corresponds to a transport control device that controls the operation of the stacker crane 4 based on transport information received by the first transport vehicle side optical transmission device 39 and the second transport vehicle side optical transmission device 40. .

  The ground side control device H <b> 1 is configured to control the operation of the opening / closing device 58 based on the conveyance information and the travel position information of the stacker crane 4. The ground side control device H1 corresponds to an opening / closing control means for controlling the operation of the opening / closing device 58.

As shown in FIGS. 4 to 7, the ground-side control device H <b> 1 opens the first opening / closing door 48 when the stacker crane 4 passes through the first entrance 47 and the stacker crane 4 passes through the first entrance 47. After that, the operation of the first opening / closing device 59 is controlled so as to close the first opening / closing door 48.
The ground side control device H1 opens the second opening / closing door 50 when the stacker crane 4 passes through the second doorway 49 and opens the second opening / closing door 50 after the stacker crane 4 passes through the second doorway 49. In order to perform the closing operation, the operation of the second opening / closing device 60 is controlled.

Further, the ground side control device H1 has the first auxiliary when the stacker crane 4 passes through the first doorway 47 and enters the first storage section E1 when the first opening / closing door 48 is closed. In a state in which the opening / closing door 55 is opened and the stacker crane 4 passes through the first entrance / exit 47 and exits from the first storage compartment E1, the first auxiliary opening / closing device 61 is operated to close the first auxiliary opening / closing door 55. It is comprised so that the action | operation of may be controlled.
Further, the ground side control device H1 has the second auxiliary when the stacker crane 4 passes through the second doorway 49 and enters the second storage section E2 in a state where the second door 50 is closed. In a state where the opening / closing door 57 is opened and the stacker crane 4 passes through the second entrance / exit 49 and exits from the second storage section E2, the second auxiliary opening / closing device 62 is operated to close the second auxiliary opening / closing door 57. It is comprised so that the action | operation of may be controlled.

  As described above, the article transport facility includes the cart moving section E0 in which the cart moving path 5 is formed, the first storage section E1 located on the transport vehicle HP side with respect to the cart moving path 5, and the cart moving path 5. On the other hand, it is partitioned by a partition wall 46 into a second storage section E2 located on the transport vehicle OP side. Therefore, when the stacker crane 4 moves from the cart movement section E0 to the first storage section E1, or when the stacker crane 4 moves from the first storage section E1 to the carriage movement section E0, the stacker crane 4 passes through the second storage section E2. Therefore, it is easy to maintain the environment of the second storage section E2. Further, when the stacker crane 4 moves from the carriage movement section E0 to the second storage section E2, or when the stacker crane 4 moves from the second storage section E2 to the carriage movement section E0, the stacker crane 4 passes through the first storage section E1. Therefore, it is easy to maintain the environment of the first storage section E1.

[Another embodiment]
(1) In the above embodiment, when the article transport vehicle moves from the first storage section E1 to the second storage section E2, the positional relationship between the first light projecting means and the first light-projected portion is in the first retracted state. After switching from the first light projecting state to the first light projecting state, the positional relationship between the second light projecting means and the second projecting portion is switched from the second light projecting state to the second retracted state. After switching to the second retracted state, the first retracted state may be switched to the first light projecting state.
Similarly, when the article transport vehicle moves from the second storage section E2 to the first storage section E1, after switching from the second retracted state to the second light projecting state, the first light projecting state is changed to the first retracted state. However, after switching from the first light projecting state to the first retracted state, the second retracted state may be switched to the second light projecting state.

( 2 ) In the above-described embodiment, the article transport vehicle has been operated to close the first opening / closing door 48 after the article transport vehicle has passed through the first doorway 47 and the article transport vehicle has entered the first storage compartment E1, but the article transport vehicle has the first operation. The first door 47 may be opened while the article transport vehicle is positioned in the first storage section E1 without closing the first opening / closing door 48 after entering the storage section E1. Similarly, the second doorway 49 may be opened while the article transport vehicle is located in the second storage section E2.

( 3 ) In the above embodiment, when the article transport vehicle has left the first storage section E1 in a state where the first opening / closing door 48 is closed, the first auxiliary opening / closing door 55 is closed. Although the first opening 54 is closed, the first opening 54 is also provided when the article transport vehicle is leaving the first storage compartment E1 without providing the first auxiliary opening / closing door 55 and the first auxiliary opening / closing device 61. You may keep open. Similarly, the second auxiliary opening / closing door 57 and the second auxiliary opening / closing device 62 are not provided, and the second opening 56 can be left open even when the article transport vehicle is leaving the second storage section E2. Good.

( 4 ) In the above embodiment, the first light projecting unit, the second light projecting unit, the first light projecting unit, and the second light projecting unit are configured by the light projecting and receiving devices. The means and the second light projecting means may be configured by a light projector that projects light, and may be configured by a light receiver that receives the first light projection unit and the second light projection unit.
Further, the first light projecting unit and the second light projecting unit may be configured by a light projecting / receiving device, and the first light projecting unit and the second light projecting unit may be configured by a reflector. Specifically, the first light projecting unit and the second light projecting unit are configured to project light for distance measurement toward the article transport vehicle and receive the reflected light, and the first light projecting unit. Is configured to reflect the light projected from the first light projecting unit toward the first light projecting unit, and the second light projecting unit is configured to reflect the light projected from the second light projecting unit. You may comprise so that it may reflect toward .

( 5 ) In the above embodiment, the first flow suppression means is configured by the first opening / closing door 48 that opens and closes the first entrance 47, and the second flow suppression means is the second that opens and closes the second entrance 49. Although comprised with the opening-and-closing door 50, it comprises the 1st airflow suppression means which comprises the 1st air ejection mechanism which injects air in order to form an air curtain in the 1st entrance 47, and the 2nd current flow suppression means, You may comprise by the 2nd air ejection mechanism which ejects air in order to form an air curtain in the 2nd entrance / exit 49. FIG.
The carriage moving section E0, the first storage section E1, and the second storage section E2 are set to different environments by changing the temperature. However, in addition to the temperature, other conditions such as cleanliness and humidity are different. May be set to different environments.

( 6 ) In the above embodiment, the first storage section E1, the cart movement section E0, and the second storage section E2 are provided in this order from one side in the shelf width direction, and two storage sections are provided in the shelf width direction. For example, the first storage section E1, the first carriage movement section, the second storage section E2, the second carriage movement section, and the third storage section are provided in this order from the one side in the shelf width direction. Two or more storage compartments may be provided.
In the above embodiment, the placement position where the stacker crane 4 is placed when the traverser 6 travels and the setting position where the light projection switching device 41 is operated are the same position. The position may be set to a position shifted on the traverser 6 in the shelf width direction.
Moreover, in the said embodiment, although it detected based on the pulse information from the conveyance vehicle side rotary encoder 4a that the traverser 6 moved to the mounting position, even if other detection means, such as a limit switch, are provided and detected. Good.

DESCRIPTION OF SYMBOLS 1 Storage part 2 Goods storage shelf 3 Conveyance vehicle moving route 4 Goods conveying vehicle 5 Carriage moving route 6 Traverser 37 1st light projection means 38 2nd light projection means 39 1st light projection part 40 2nd light projection part 41 Throw Light switching device 46 Partition wall 47 1st doorway 48 1st opening / closing door (1st flow suppression means)
49 2nd doorway 50 2nd opening / closing door (2nd flow suppression means)
54 1st opening part 55 1st auxiliary opening / closing door 56 2nd opening part 57 2nd auxiliary opening / closing door 58 Opening / closing device E0 Carriage movement section E1 1st storage section E2 2nd storage section H1 Opening / closing control means H2 Switching control means H3 Transport control means

Claims (4)

A plurality of article storage shelves in which a plurality of storage units for storing articles are arranged side by side along the shelf width direction are provided side by side along the shelf front-rear direction,
A plurality of transport vehicle movement paths formed along the shelf width direction in front of the article storage shelf are formed in the shelf front-rear direction,
An article transport vehicle that moves the transport vehicle movement path along the shelf width direction and transports the article to the storage unit; and
A carriage movement path formed along the shelf front-rear direction is moved laterally to the article storage shelf and the conveyance vehicle movement path, and is movable to a stop position corresponding to each of the plurality of conveyance vehicle movement paths. And a traverser,
The article transport vehicle is configured to be movable between the transport vehicle moving path and the traverser stopped at the stop position corresponding to the transport vehicle moving path.
The traverser is an article conveying facility configured to be movable along the carriage moving path in a state where the article conveying vehicle is placed,
The article storage shelves are provided on both sides of the shelf width direction with respect to the cart movement path, and the conveyance vehicle movement path is formed,
A carriage movement section in which the carriage movement path is formed, and an article storage shelf is provided on one side of the shelf width direction with respect to the carriage movement path, and the transport vehicle movement path is formed. A partition wall that partitions one storage section and a second storage section that is located on the other side in the width direction of the shelf with respect to the carriage movement path and that is provided with the article storage shelf and in which the conveyance vehicle movement path is formed Is provided,
A first inlet / outlet through which the article transport vehicle passes and moves between the carriage moving section and the first storage section, and a first passage for suppressing air flow through the first inlet / outlet on the partition wall. A second flow control for suppressing the flow of air through the second entry / exit for the article transport vehicle to move between the restraining means, the carriage moving section and the second storage section, and the second entrance / exit. Means is provided, and the carriage moving section, the first storage section and the second storage section are set in different environments ,
The traverser is provided with first light projecting means for projecting horizontally toward one side in the shelf width direction and second light projecting means for projecting horizontally toward the other side in the shelf width direction. ,
In a state where the article transport vehicle is positioned on the traverser and positioned on one side of the shelf width direction from the set position, a first projection target irradiated with light from the first light projecting unit is irradiated. A light portion, and a second light-projected portion that is irradiated with light from the second light-projecting means in a state of being located on the other side in the shelf width direction from the setting position and the setting position;
The first light projecting means is provided in the traverser so as to be located on the other side in the shelf width direction from the first light projecting portion in a state where the article transport vehicle is placed at a setting position of the traverser. And
The second light projecting unit is provided in the traverser so as to be positioned on one side in the shelf width direction from the second light projecting unit in a state where the article transport vehicle is placed at a setting position of the traverser. And
The first light projecting unit and the first light projecting unit are opposed to each other in a state where the first light projecting unit and the first light projecting unit are overlapped in the width direction of the shelf, and the first light projecting unit is irradiated with the light projecting from the first light projecting unit. In the first light projecting state, the first light projecting unit or the first light projecting unit is placed on the shelf so that the first light projecting unit and the first light projecting unit do not overlap with each other when viewed in the width direction of the shelf. From the second light projecting means facing each other in a first retracted state in which the second light projecting means and the second light projecting portion overlap each other when viewed from the shelf lateral width direction. The second light projection state in which the second light projection unit is irradiated with the second light projection unit, and the second light projection unit and the second light projection unit so as not to overlap with each other when viewed in the shelf width direction. There is provided a light projection switching device for switching the second light projecting means or the second light projected portion to a second retreat state in which the second light projecting portion is retreated in a direction crossing the shelf width direction. Article transport facility that is. Switching control means for controlling the operation of the light projection switching device is provided;
When the article transport vehicle moves from the first storage section to the second storage section, the switching control means switches from the first retracted state to the first light projection state and then performs the second light projection state. When the article transport vehicle moves from the second storage section to the first storage section, the first transport state is switched to the second light projecting state after the first storage section is switched to the second light projecting state. The article conveyance facility according to claim 1 , configured to control an operation of the light projection switching device in order to switch from the light projection state to the first retracted state . The first light projecting unit and the second light projecting unit are configured to transmit transport information to the article transport vehicle by optical transmission,
The first light projecting portion is configured to receive light projected from the first light projecting means,
The second light projecting unit is configured to receive light projected from the second light projecting unit,
The said article conveyance vehicle is provided with the conveyance control apparatus which controls the action | operation of the said article conveyance vehicle based on the conveyance information light-received by the said 1st light projection part and the said 2nd light projection part. Item conveying equipment of 1 or 2. The first flow suppression means is constituted by a first opening / closing door that opens and closes the first doorway,
The second flow suppressing means is constituted by a second opening / closing door that opens and closes the second entrance;
The first opening / closing door includes a first opening through which light is emitted from the first light projecting unit when the first opening / closing door is closed, and a first auxiliary opening / closing door that opens and closes the first opening. Configured
The second opening / closing door includes a second opening through which light is emitted from the second light projecting unit when the second opening / closing door is closed, and a second auxiliary opening / closing door that opens and closes the second opening. Configured
An opening / closing device for opening / closing the first opening / closing door, the second opening / closing door, the first auxiliary opening / closing door, and the second auxiliary opening / closing door;
And an opening / closing control means for controlling the operation of the opening / closing device,
The opening / closing control means is
When the article transport vehicle passes through the first doorway, the first door is opened, and after the article transport vehicle passes through the first door, the first door is closed, In the closed state of the first door, the first auxiliary door is opened while the article transport vehicle enters the first storage compartment, and the article transport vehicle exits the first storage compartment. While the first auxiliary door is closed,
When the article transport vehicle passes through the second doorway, the second door is opened, and after the article transport vehicle passes through the second door, the second door is closed, and While the second opening / closing door is closed, the second auxiliary opening / closing door is opened while the article transporting vehicle enters the second storage compartment, and the article transporting vehicle leaves the second storage compartment. The article conveying facility according to any one of claims 1 to 3 , wherein an operation of the opening / closing device is controlled so that the second auxiliary opening / closing door is closed while the second auxiliary opening / closing door is closed .

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