JP2945274B2 - Multi-layer box-type circulation type parking device and its parking method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer, box-type, circulation type three-dimensional parking apparatus and a parking method therefor, and more particularly, to a multi-layer, box-type, circulation type parking apparatus capable of performing a circulation drive operation as a preparatory operation during a car entry / exit operation. The present invention relates to an apparatus and a parking method thereof.

[0002]

2. Description of the Related Art FIG. 12 shows a conventional example of a multilayer box-type circulation type parking device and its parking method.
This figure shows a multi-layered box-type circulation type parking device having two storage layers. In FIG. 12, reference numeral 1 denotes a multi-layered box-type circulation type three-dimensional parking device (hereinafter simply referred to as a parking device). ). The parking device 1 includes a car 2
(Hereinafter simply referred to as an entrance / exit), and a plurality of trays 3 on which the automobile 2 is loaded, and a storage layer 4 (an upper storage layer) in which the plurality of trays are arranged in parallel. 4a and the lower storage layer 4b) are provided in a plurality of layers, and at both ends of the storage layer 4, a hoistway 6 which communicates between the plurality of storage layers 4 and serves as a transfer passage for the tray 3 and 7 are provided. At each level of the plurality of storage layers 4, a traversing drive device 8 that sequentially circulates and transfers the plurality of trays 3 placed on the respective storage layers 4a and 4b is installed. The hoistway 7 provided at the left end in FIG.
In the hoistway 7, there is provided a first elevating device 9 used for both the operation of loading and unloading the vehicle 2 and the operation of transferring the vehicle 2 between the storage layers 4 a and 4 b (that is, the circulation operation). Is installed. On the other hand, in the hoistway 7 at the right end, a second hoisting device 10 used for circulating the automobile 2 is installed. Reference numeral 11 denotes a driving mechanism such as a motor for driving the first lifting / lowering device 9, and reference numeral 12 denotes a driving mechanism for driving the second lifting / lowering device 10.

In such a conventional parking device 1, the tray 3 called by the operation of the traversing drive device 8 when a certain tray calling instruction is issued is referred to as a storage layer (4a) to which the tray 3 belongs. ) And the storage layer 4b that is paired with the tray 3 are transferred in a so-called multilayer circulation system in which the tray 3 is transferred sequentially in a circulating manner using the hoistways 6 and 7, and the tray 3 is moved to the hoistway 7. . Further, it is conveyed in the hoistway 7 by the first elevating device 9 and conveyed to the entrance / exit 5. If this operation is a parking operation of the vehicle 2, the first elevating device 9 receives the vehicle 2 at the entrance 5 and conveys it to one of the storage layers 4a and 4b, and places it on the storage layer. On the other hand, if the operation is the leaving operation of the vehicle 2, the first lifting / lowering device 9 causes the vehicle 2 to leave the vehicle at the entrance / exit port 5 and ends the operation.

[0006] This series of operation control is performed by a fixed single sequence control according to a preset program. Then, when another tray is called, the first lifting / lowering device 9 sets the tray at a predetermined position of the storage layer 4 and transports the tray 3 by the same circulating operation as described above. Tray 3 to be received.

FIG. 13 shows a conventional example of a multi-layered box-type circulation type parking device of a type having four or more storage layers.
In this figure, reference numeral 15 indicates the entire multi-layered box-type circulation type multi-story parking device. This parking device 15 also has an entry / exit port 5 for entering / exiting the car 2, as in the parking device shown in FIG.
A plurality of storage layers 16 having a plurality of trays 3 and having the plurality of trays arranged in parallel (the uppermost storage layer is 16a, and hereinafter 16b, 16c,... In order) are provided. At one end (the right end in FIG. 13) of the storage layer 16, a hoistway 17 that communicates between the plurality of storage layers 16 and serves as a transfer passage for the tray 3 is provided, while the other end (FIG. 13). (Left end), a hoistway 18 is also provided for communicating between the plurality of storage layers 16 and serving as a transfer passage for the tray 3. Further, on the outside adjacent to the hoistway 18, the storage layer 16 and the entrance 5 And an elevator passage 19 communicating with the elevator. Elevating devices 20 and 21 used for tray circulation operation are installed in the hoistways 17 and 18, while an elevator device 22 is installed in the elevator passage 19. In the drawing, reference numeral 23 denotes the lifting device 20.
, A motor 24 as a drive source of the elevating device 21, and a motor 25 as a drive source of the elevator device 22.

In each of the plurality of storage layers 16, between the storage layers 16a and 16b, these storage layers 16a, 1b
A traversing drive device 26 for sequentially circulating and transporting the plurality of trays 3 placed on 6b is provided. Further, between the storage layers 16c and 16d, these storage layers 16c, 16d
A traversing drive device 27 that sequentially circulates and transfers a plurality of trays 3 placed on the tray 3 is installed.

[0007] In such a conventional parking device, the tray 3 called by the operation of the traversing drive device 26 or 27 when a certain tray calling instruction is given is stored in the storage layer (here, the tray 3) to which the tray 3 belongs. 16a),
The hoistway 17, between the storage layer 16b paired with it,
The tray 3 is first transferred to the hoistway 18 by the so-called multi-layer circulation system, which is sequentially transferred in a circulating manner using the tray 18. Next, the tray 3 is carried out to the elevator passage 19 and is conveyed to the entrance 5 by the elevator device 22. If this operation is a parking operation of the vehicle 2, the first elevating device 9 moves the vehicle 2
And transported to one of the storage layers 16a and 16b, and placed on that storage layer. On the other hand, when the above operation
In this case, the first elevating device 9 causes the vehicle 2 to exit the entrance / exit port 5 and ends the operation.

In this conventional example, one of the trays 3 is conveyed by the elevator device to the entrance / exit 5 and the storage layer 16a,
In each set of 16b and 16c, 16d, the lifting device 2
The circulation movement of the tray 3 (this operation is referred to as “preparation operation”) is performed using each of 0 and 21, and the tray to be carried out next is transferred to the hoistway 18. By adopting such a parking method, it is possible to reduce the time required for performing continuous storage and retrieval.

[0009]

However, in the conventional parking apparatus and the parking method thereof, in the former parking method, the first lifting / lowering apparatus 9 also serving as an elevator apparatus is used.
Since the tray 3 cannot be circulated and moved in the lower storage layer 4 while the tray 3 is being used for the loading / unloading operation of the tray 3 and the preparation operation is not performed, the time can be reduced even if there is a request for continuous loading / unloading. There is a problem that the tray 3 cannot be quickly put in and taken out of the tray.

[0010] Among the parking methods in the conventional parking apparatus, the latter parking method has an advantage that the preparation operation can be performed and the entrance / exit time can be reduced, but the hoistway 18 is provided in addition to the elevator passage 19. Since the hoistway 18 must be used for circulating the tray 3, an empty space 2 is provided in a portion of the storage layer 16 corresponding to the hoistway 18.
8a and 28b are created, and there is a problem that the space for storing the automobile 2 cannot be effectively used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to reduce the time for continuous storage and retrieval requests while effectively utilizing the car storage space of a parking device. And a method of parking the same.

[0012]

In order to achieve the above object, the present invention comprises a plurality of storage layers for storing a large number of trays;
Two hoistways extending up and down by connecting a plurality of storage layers,
Traversing drive means for traversing the tray in each storage layer,
A multilayer box-type circulating parking device comprising: a lifting means for moving a tray up and down between the plurality of storage layers; and a car loading / unloading section provided in communication with one of the plurality of hoistways. In the loading / unloading section, a tray holding means for separating and holding the tray from the lifting / lowering means is provided, and a tray supported by the lifting / lowering means in the hoistway is additionally provided. The gist of the invention is that a car is moved in and out while being held, and a tray circulating operation is performed between the storage layers while the car is moved in and out of the car entrance and exit section.

[0013]

According to the present invention, a tray holding means is provided in the vehicle entrance / exit section and the trays supported by the elevating means are additionally provided. Even if the tray is held by the holding means, another tray is still supported by the lifting device in the hoistway. Therefore, while the vehicle is being moved in and out of the vehicle entrance / exit section, the tray is circulated using the another tray between the predetermined storage layers to perform the preparatory operation.
As a result, it is possible to reduce the time required for continuous storage and retrieval.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a multi-layer box-type circulation type multi-story parking device having two storage layers according to a first embodiment of the present invention. In this figure, FIG.
The same parts as in FIG. 2 are denoted by the same reference numerals, and redundant description will be omitted. That is, the parking device 30 according to this embodiment
Has basically the same configuration as the conventional parking device 1 shown in FIG. 12, and has an entrance / exit port 5 as an automobile entrance / exit section for entering / exiting the automobile 2, a plurality of trays 3, and a storage layer 4 (upper stage). Is 4a, the lower row is 4b), the hoistways 6 and 7, the traversing drive device 8 installed in the storage layer 4, the first and second hoisting devices 9, 10 provided in the hoistway. And drive mechanisms 11 and 12 for driving the lifting devices 9 and 10, respectively. However, unlike the conventional multi-story parking device, a tray holding device 31, which is a means for separating and holding the tray 3 from the first elevating device 9, is installed at the entrance / exit port 5, and the hoistways 6, 7 Inside, a tray 3 is provided one more than in the conventional parking device 1.

With respect to the parking device 30 having such a configuration, an example of a parking method, in particular, an operation at the time of entering and leaving the car 2 will be described with reference to FIGS. Now, in the state shown in FIG.
(Assumed to be loaded on the tray 3b),
After that, in FIG. 1, a continuous loading / unloading operation is performed to call out the tray (indicated by reference numeral 3a in FIG. 1) stored in the storage layer 4a. In this case, at the entrance / exit port 5, the tray 3b lifted up to the entrance / exit port 5 by the first lifting / lowering device 9 is moved to the tray holding device 3
1 further lifts up to a height position L indicated by a two-dot chain line in FIG.
Then, the leaving operation of the automobile 2 is performed in a state where the tray 3b is separated from the first lifting / lowering device 9. In contrast to this, the loading / unloading operation of the vehicle 2 is indicated by a two-dot chain line in the figure by the tray holding device 31 after the vehicle 2 is unloaded from the tray 3b lifted up to the loading / unloading port 5. May be further lifted to the height position L and separated from the first elevating device 9.

During such an unloading operation, the tray is circulated and moved in the storage layer 4 as a preparatory operation. That is, the first and second lifting devices 9, 1
The tray 3 is circulated between the storage layers 4a and 4b by using the drive device 8 and the traversing drive device 8, and the tray 3a is moved to a position before the hoistway 7 as shown in FIG. When the tray 3a is moved to a position before the hoistway 7, the traversing drive device 8 moves only the tray 3 of the storage layer 4b from the hoistway 7 side to the hoistway 6 side (that is, in FIG. 2). By moving one pitch (in the direction of arrow S1), two trays 3 are arranged in the hoistway 6 and an empty space (shown by a dotted line in FIG. 2) for one tray is created in the hoistway 7.

Thereafter, the tray 3b held by the tray holding device 31 is transferred to the first lifting / lowering device 9, and the tray 3b is first moved in the hoistway 7 as shown by an arrow S2 in FIG. And transport it to the place where it was completed. Next, as shown in FIG. 4, only the tray 3 of the storage layer 4a is moved from the hoistway 6 side by the hoistway
(That is, in the direction of arrow S3 in FIG. 4) to send out the tray 3a into the hoistway 7. Thus, in the hoistway 7, two trays 3b, which are first lowered from the entrance / exit port 5 and trays 3a carried out to the entrance / exit port 5 to be used for the next entry / exit operation, are arranged. It will be.

Next, as shown in FIG. 5, the tray 3 is moved from the storage layer 4b side to the storage layer 4a side by the second lifting device 10 in the hoistway 6 (that is, in the direction of arrow S4 in FIG. 5). 6) While being transported upward, only the tray 3 of the storage layer 4b is moved from the side of the hoistway 7 to the side of the hoistway 6 by the traversing drive device 8 as shown in FIG. 6 (that is, in the direction of arrow S5 in FIG. 6). It is moved, two trays 3 are arranged in the hoistway 6, and an empty space for one tray is shown in the hoistway 7 corresponding to the level of the storage layer 4b (shown by a dotted line in FIG. 6).
make.

As a result, the tray 3b previously lowered from the loading / unloading port 5 is separated from the first lifting / lowering device 9 and stored in the storage layer 4b.
Can raise and lower another tray. Therefore, the first elevating device 9 separates the tray 3a as shown in FIG. 7 and carries it up to the entrance / exit port 5 as shown by the arrow S6, and performs the entry / exit operation of the automobile 2 at the entrance / exit port 5. . This operation is the same as the operation shown in FIG. 1 described above, and the preparatory operation is performed on the storage layer 4 side while the car 2 is performing the loading / unloading operation. Then, the above operations are repeatedly executed to perform a continuous warehousing operation.

Therefore, according to this embodiment, one extra tray can be provided as compared with the conventional two-layer type vertical circulation type parking device, so that the number of vehicles 2 stored in the parking device can be increased. Can be done. In addition, the loading / unloading operation is performed in a state where the tray 3 is separated and held from the lifting / lowering device at the loading / unloading port 5, and during that time, the tray can be circulated and moved as a preparatory operation between the storage layers. It can fully respond to requests.

In the above example, the hoistways 6 and 7 correspond to the storage layer 4.
Are provided at the left and right end positions, but may be provided at intermediate positions separately. In addition, although the above description has been given of the multi-layer box type circulation type parking device in which two storage layers 4 are provided, the present invention is not limited to such a type, and a type in which three storage layers 4 are provided. Similarly, in the multi-layer box-type circulation type parking device, one extra tray can be similarly provided to increase the number of cars 2 stored in the parking device, and the tray 3 can be moved from the elevating device at the entrance / exit port 5. Perform the entry / exit operation while keeping it separated,
In the meantime, the tray can be circulated and moved between the storage layers as a preparatory operation, so that continuous loading and unloading can be performed.

FIG. 8 is a front view showing a multi-layered box-type circulation type multi-story parking device having four storage layers according to a second embodiment of the present invention. In this figure, the same parts as those in FIG. 13 are denoted by the same reference numerals, and redundant description will be omitted. That is, the parking device 40 according to this embodiment is different from the parking device 40 shown in FIG.
3 has basically the same configuration as the conventional parking device 15 shown in FIG. 3, and has a loading / unloading port 5 as a vehicle loading / unloading unit for loading / unloading the vehicle 2, a plurality of trays 3, and a storage layer 16 (from the top to the bottom). . 16a, 16b, 16c,...) Are provided in a plurality of layers. A lifting device 20 is provided at the right end of the storage layer 16.
Is installed at the left end, and an elevator passage 1 connecting the storage layer 16 and the entrance / exit 5 at the left end.
9 is provided, and an elevator device 22 corresponding to another elevating device is provided in the elevator passage 19. The elevating device 20 and the elevator device 22 are provided with motors 23 and 25, respectively.

However, unlike the conventional example, the storage layer 16
Between the storage layers 16a and 16b,
A traversing drive device 41 for sequentially circulating and transporting the plurality of trays 3 placed on the storage layers 16a and 16b is provided. Similarly, a traverse drive 42 is provided between the storage layers 16b and 16c, and a traverse drive 43 is provided between the storage layers 16c and 16d. Further, as in the first embodiment, a tray holding device 31 for holding the tray 3 separated from the elevator device 22 is installed at the entrance / exit port 5 and, similarly to the first embodiment, the elevator. In the passage 19, one more tray 3 is provided than in the conventional parking device 15. Further, in this embodiment, the hoistway 18 in the conventional example shown in FIG. 13 is not provided, and the place is used for storing the automobile 2 as a part of the storage layer 16. For this reason, in this embodiment, the number of trays 3 is three in total (one more in the elevator passage 19 and two more in the storage layer 16) as compared with the conventional parking device 15 described above. become.

The operation of the parking device 40 having the above-described configuration when the vehicle 2 enters and leaves the vehicle will be described. Now, in the state of FIG.
(Assumed to be loaded on the tray 3c),
After that, in FIG. 8, a continuous loading / unloading operation is performed to call out the tray (indicated by reference numeral 3d in FIG. 8) stored in the storage layer 16c. in this case,
At the entrance / exit port 5, the tray 3c lifted up to the entrance / exit port 5 is further lifted by the tray holding device 31 to a height position L indicated by a two-dot chain line in FIG. Then, the leaving operation of the automobile 2 is performed in a state where the tray 3c is separated from the elevator device 22. In contrast to this, the entry / exit operation of the automobile 2 is performed by letting the automobile 2 exit from the tray 3c which has been transported upward to the entry / exit port 5, and the tray 3c is indicated by a two-dot chain line in FIG. Height position L
The procedure may be such that the elevator device 22 is further separated from the elevator device 22 by further lifting the same.

During the unloading operation, the tray 3 is circulated and moved in the storage layer 16 as a preparatory operation. In other words, the storage layers 16c, 1
The tray 3 is circulated between 6d. In order to explain the circulating movement of the tray 3 at this time, in FIG.
7 trays installed at the storage layer 16a level
X, the tray installed at the storage layer 16c level is 3Y
And The circulation movement of the tray 3 is performed as follows. That is, as shown in FIG. 9, first, only the tray 3 of the storage layer 16c is moved by one pitch from the hoistway 17 side to the elevator passage 19 side (that is, in the direction of the arrow S11 in FIG. 9) by the traversing drive device 43. Let it. As a result, the tray 3Y is fed into the storage layer 16c, while the tray also disposed at the tip of the storage layer 16c is extruded into the elevator passage 19, and two trays 3 are disposed in the elevator passage 19. At the same time, an empty space for one tray (shown by a dotted line in FIG. 9) is created in the hoistway 17.

By the above operation, the tray 3X can be freely moved up and down in the hoistway 17 by the elevating device 20, so that the tray 3X is conveyed down to the storage layer 16d level by the elevating device 20 (FIG. 9, an arrow S12) is formed to enable the tray 3 to circulate between the storage layers 16c and 16d. Then, the tray 3 is circulated between the storage layers 16c and 16d by the traversing drive device 43, and the tray 3d is moved to a position before the elevator passage 19 as shown in FIG.

When the tray 3d is moved to a position just before the elevator passage 19, the traversing drive unit 43 then moves only the tray 3 of the storage layer 16d to the elevator passage 19.
Is moved toward the hoistway 17 (ie, in the direction of arrow S13 in FIG. 11), and all the trays 3 are temporarily evacuated from the elevator passage 19 corresponding to the storage layer 16. Then, the tray 3c lifted to the entrance 5 by operating the elevating device 22 is moved to the storage layer 16a or 16b.
(In this case, the storage layer 16a) and stored in this storage layer 16a (see FIG. 11). Next, only the tray 3 of the storage layer 16c is moved by one pitch from the hoistway 17 side to the elevator passage 19 side (that is, in the direction of arrow S14 in FIG. 11) by the traversing drive device 43, and the tray 3d is lifted. Push into passage 19. Then, the lifting / lowering device 22 is operated to move the tray 3d.
Is lifted and conveyed up to the entry / exit opening 5, where the entry / exit operation of the automobile 2 is performed. This state is the same as the operation shown in FIG.
During the loading / unloading operation, the preparatory operation is performed on the storage layer 16 side as in the previous case. Then, the above operations are repeatedly executed to perform a continuous warehousing operation.

Therefore, according to this embodiment, three extra trays can be provided as compared with the conventional four-layer type multilayer box-type circulation type parking device, so that the car 2 is stored in the parking device 40. The number of vehicles can be increased, and the space utilization efficiency of the parking device 40 can be improved. Further, the present invention can be applied to a multilayer box-type circulation type parking device having four or more storage layers 16. In fact, if the present invention is applied to a multi-layer box-type circulation type parking device having four or more storage layers, the number of trays 3 that can be increased compared to the conventional case is as follows: Thus, the number of parked cars 2 can be increased.

Further, the loading / unloading operation is performed in a state where the tray 3 is separated and held from the lifting / lowering device at the loading / unloading port 5, and during this time, the tray can be circulated and moved as a preparatory operation between the storage layers. It is possible to sufficiently respond to a request for entry / exit and to reduce the time required for the continuous entry / exit operation.

Further, in the second embodiment, in the multi-layer box-type circulation type parking device having four or more storage layers,
The first layer and the second layer, the second layer and the third layer, the third layer and the fourth layer,... Since the driving devices 41 to 43 are provided, it is possible to arbitrarily select the storage layer 16 to be circulated when performing the preparatory operation of the tray 3, and to increase the degree of freedom of the operation.

In the above example, the hoistway 17 and the elevator passage 19 are provided at the left and right end positions of the storage layer 16, respectively. However, they may be provided at intermediate positions.

[0032]

As described above, according to the present invention,
A tray holding means for lifting and holding the tray from the elevating means is provided at the car entrance / exit section of the multilayer box-type circulation type parking apparatus. Further, a tray supported by the elevating means in the hoistway is added, and the entrance / exit of the car is carried out. At the time of operation, the vehicle is moved in and out while the tray is held by the holding means, and the tray circulation operation is performed between the storage layers while the vehicle is being moved in and out of the vehicle entrance and exit section. During the loading / unloading operation, while the tray is held by the holding means, while the vehicle is being loaded / unloaded at the vehicle loading / unloading section, the circular movement operation of the tray using the another tray between predetermined storage layers. You can perform and prepare for driving. Therefore, it is possible to reduce the time required for continuous storage and retrieval. In addition, since the number of trays can be increased, the number of parked vehicles can be increased, and the space use efficiency of the multilayer box-type circulation type parking device can be improved.
Various effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a multilayer box-type circulation type parking device according to a first embodiment of the present invention, and a first stage of a car loading / unloading operation by the parking device.

FIG. 2 is a front view showing a second stage of the car entry / exit operation by the multilayer box-type circulation type parking device in the embodiment.

FIG. 3 is a front view showing a third stage of the car entry / exit operation by the multilayer box-type circulation parking device in the embodiment.

FIG. 4 is a front view showing a fourth stage of the car entry / exit operation by the multilayer box-type circulation parking device in the embodiment.

FIG. 5 is a front view showing a fifth stage of the loading / unloading operation of the automobile by the multilayer box-type circulation parking device in the embodiment.

FIG. 6 is a front view showing a sixth step of the car entry / exit operation by the multilayer box-type circulation parking device in the embodiment.

FIG. 7 is a front view showing a seventh stage of the car entry / exit operation by the multilayer box-type circulation parking device in the embodiment.

FIG. 8 is a front view showing a configuration of a multilayer box-type circulation type parking device according to a second embodiment of the present invention, and a first stage of a car loading / unloading operation by the parking device.

FIG. 9 is a front view showing a second stage of the car entry / exit operation by the multilayer box-type circulation parking device in the second embodiment.

FIG. 10 is a front view showing a third stage of the car loading / unloading operation by the multilayer box-type circulation parking device in the second embodiment.

FIG. 11 is a front view showing the last several stages of a car entry / exit operation by the multilayer box-type circulation parking device in the second embodiment.

FIG. 12 is a front view schematically showing a configuration of a conventional multilayer box-type circulation type parking device (two-layer type) and an operation of entering and exiting a car by the parking device.

FIG. 13 is a front view schematically showing a configuration of a conventional multilayer box-type circulation type parking device (four-layer type), and a car loading / unloading operation by the parking device.

[Explanation of symbols]

 2 Car 3 Tray 4, 16 Storage layer 5 Entry / exit port 6, 7, 17 Hoistway 8, 41, 42, 43 Traversing drive 9, 10, 20, 22 Lifting device 11, 12, 23, 25 Drive 31 Tray Holding device

Claims (5)

(57) [Claims] 1. A plurality of storage layers for storing a plurality of trays for loading on a car, two hoistways connecting the plurality of storage layers and extending up and down, and moving the trays in each storage layer. A parking device comprising: a traversing drive unit; an elevating unit that moves a tray up and down between storage layers; and a car entrance / exit unit provided in communication with one of the plurality of hoistways. Tray holding means for separating and holding the trays from the elevating means, and the number of trays supported by the elevating means in the hoistway is increased by a predetermined number according to the number of storage layers. Multi-layer box-type circulation type parking device. 2. It has two or three storage layers and one tray.
The multi-layered box-type circulation type parking device according to claim 1, wherein the number of additional parking spaces is increased. 3. It has n storage layers (where n ≧ 4),
2. The multilayer box-type circulation type parking device according to claim 1, wherein n-1 trays are added. 4. The multi-layer box-type circulation type parking device according to claim 3, wherein a traversing drive device is provided between all vertically adjacent storage layers. 5. A plurality of storage layers for storing a number of trays for loading on a vehicle, two hoistways extending vertically by connecting the plurality of storage layers, and moving the trays in each storage layer. A parking device comprising: a traversing drive unit; an elevating unit that moves a tray up and down between storage layers; and a car entrance / exit unit provided in communication with one of the plurality of hoistways. Tray holding means for separating and holding the tray from the elevating means, and a predetermined number of trays supported by the elevating means in the hoistway according to the number of storage layers are provided. At the time of operation, the tray is held by the holding means, and the car is taken in and out, and the tray circulation operation can be performed between the storage layers while the car is being taken in and out of the car entry / exit section. Features Parking method in a multi-layer box-circulation type parking system to be.