JP4345007B2 - Container transport device - Google Patents

Description

  According to the present invention, a traveling carriage provided with a placement unit for a storage device places the storage device on the placement unit and a storage unit transfer position where the storage unit is loaded and unloaded on the placement unit. The present invention relates to a container transport device configured to be able to travel over a processing location where processing is performed on the stored container.

  In such a container transport device, conventionally, a traveling carriage is caused to travel over a container transfer position and a processing position, and the container is transferred to the traveling carriage located at the container transfer position by the container transfer apparatus. It is comprised so that processing may be performed with respect to the storage device mounted in the mounting part of the traveling cart located in a process location (for example, refer patent document 1).

JP 2000-142911 A

However, in the above-described conventional configuration, since the container is simply placed on the placement unit, when the traveling carriage travels between the container transfer place and the processing place, the traveling carriage travels. There was a possibility that the container would fall down by starting and stopping. In particular, it becomes remarkable when a tall container is placed on the placement unit.
Therefore, the traveling carriage is provided with a locking portion that can be artificially switched between a locked state that engages with a locked portion provided in the container and a released state that releases the engagement with the locked portion. When the traveling cart travels between the storage container transfer location and the processing location, the locking portion is switched to the locked state in order to prevent the storage device from falling down due to the start and stop of traveling of the traveling cart, When loading and unloading the storage device with respect to the mounting portion in the storage device transfer device, the locking portion is switched to the released state so that the storage device can be loaded and unloaded without being interrupted by the locking portion. Thus, a configuration in which the locking portion is artificially switched is conceivable. In addition to the locking portion, a position detecting sensor for detecting the travel position of the traveling carriage, a driving means for switching the locking portion between the locked state and the released state, and the driving means based on the detection information of the position detecting sensor. It is conceivable that the control means for controlling the operation is provided and the locking portion is automatically switched between the locked state and the released state as described above.

  However, in the configuration in which the locking portion is artificially switched as described above, the locking portion must be manually switched when the container is loaded onto and lowered from the mounting portion. The switching operation of the locking portion is troublesome, and in the configuration that includes the position detection sensor, the driving means, and the control means to automatically switch the locking portion, the switching operation of the locking portion is troublesome. However, since it is necessary to provide a position detection sensor, a driving means, and a control means, the container transport device is expensive.

  The present invention has been made in view of the above circumstances, and its purpose is to provide a locked state that prevents the container from falling down and a released state in which the container can be loaded onto and lowered from the mounting part. An object of the present invention is to provide a container transport device that includes a switchable locking portion, can automatically perform a switching operation of the locking portion, and can suppress an increase in cost.

In order to achieve this object, a first characteristic configuration of a container transport device according to the present invention is that a traveling carriage provided with a container mounting portion includes a container mounting device described above in the container transfer device. In a container transport device configured to be able to travel over a container transfer position to be loaded and unloaded with respect to a processing position for processing the container mounted on the mounting portion,
The traveling carriage can be switched between a locked state that prevents the container from falling by engaging with a locked portion provided in the container, and a released state that releases the engagement with the locked portion. And a biasing means for biasing the latching portion back to the latched state, and corresponding to the container transfer position as the traveling carriage moves to the container transfer position. And an operating portion for switching the locking portion to the released state against the urging force of the urging means by retreating by contacting the abutting member provided. is there.

  That is, a latch that can be switched between a locked state that engages with a locked portion provided in the container and prevents the container from falling down and a released state that releases the engagement with the locked portion. And when the traveling carriage travels between the container transfer location and the processing location, the latching portion is switched to the latching state, so that the traveling cart can be stored by starting and stopping. It is possible to prevent the container from falling down, and at the time of loading and unloading the storage device with respect to the mounting part, the locking part is switched to the released state so that the locking part is not disturbed. The container can be loaded and unloaded without being carried out.

  And, when the traveling carriage is traveling over the container transfer location and the processing location, the locking tool is switched to the locked state by the return bias to the locked state side of the biasing means, As the traveling carriage moves to the storage container transfer location, the operation unit contacts the contact member provided corresponding to the storage container transfer location, and the traveling carriage moves toward the storage container transfer location. As a result, the operating portion is moved backward against the urging force of the urging means, and the locking portion is switched to the released state. In addition, when the traveling carriage travels toward the processing location and the traveling carriage moves away from the container transfer location, the locking portion is attached by releasing the contact between the operation portion and the contact member. It is urged to return by the urging force of the urging means and is switched to the locked state.

  Accordingly, since the switching operation of the locking portion is automatically performed as the traveling carriage travels, the switching operation of the locking portion is not troublesome, and the urging force of the urging means and the container movement of the traveling trolley are not changed. Since the locking part is automatically switched between the locked state and the released state by the backward movement of the operation part by moving to the mounting position, the detection sensor and the locking part for detecting the position of the traveling carriage are The drive means for switching operation and the control means for controlling the operation of the drive means based on the detection result of the detection sensor are not required and can be configured at low cost, so that the locking portion can be automatically switched. In addition, it has become possible to provide a container transport device capable of suppressing the increase in cost.

  A second characteristic configuration according to the present invention is the first characteristic configuration, wherein the placement unit is installed at a position corresponding to each of a right front part, a left front part, a right rear part, and a left rear part of the traveling carriage, Each of the four corners of the bottom portion of the container is provided with a mounting support member that individually supports the mounting, and each of the mounting support members moves the container in any one of the front and rear directions. A front-rear direction restricting body for restricting and a left-right direction restricting body for restricting movement of the container in any one of the left and right directions are provided, and the locking portion is provided on the front side of the traveling carriage. A front locking member provided between the above-mentioned mounting support member erected on the right front part and the above-mentioned mounting support member erected on the left front part of the traveling carriage; and a rear part of the traveling carriage The above-mentioned mounting support portion erected on the right rear portion of the traveling carriage And a rear locking member provided between the left and right rear support members provided on the left rear portion of the traveling carriage, and the front locking member and the rear locking member are It exists in the point comprised so that it may act on the said to-be-latched part so that the floating of the said container may be prevented in a stop state.

  In other words, the front-rear direction restricting body and the left-right direction restricting body provided on each of the placing support members can restrict the movement of the container placed on the placing portion in the front-rear direction and the left-right direction. Since the front part of the storage unit is prevented from being lifted by the front locking member, and the rear part of the storage unit is prevented from being lifted by the rear locking member, so that the storage unit is prevented from falling. The container can be prevented from falling down due to starting and stopping.

  A third feature configuration according to the present invention is configured such that, in the second feature configuration, the locking portion is switched between the locked state and the released state by swinging around a longitudinal axis. In the point.

  That is, the direction in which the locking portion is urged by the urging means is different from the direction in which the locking portion is engaged with the locked portion, and there is no need to prevent the container from falling by the urging force of the urging means. Therefore, the urging force of the urging means may be a force that urges the locking portion back to the locked state, and is urged as compared with that that prevents the container from falling by the urging force of the urging means. Since the biasing force of the means may be small, the configuration of the biasing means can be simplified.

  According to a fourth feature configuration of the present invention, in the second or third feature configuration, the operation portion is configured to move backward in a form of sliding in an axial direction by contact with the contact member. It is in the point comprised with a member and a pair of connection part which interlockedly connects the front locking member and the rear locking member with which the rod-shaped member and the locking part were equipped.

  That is, both the front locking member and the rear locking member that are interlocked and connected to each other by the connecting portion by the backward movement of the bar-shaped member can be switched, so that the front locking member and the rear locking member can be operated. The structure of the container transport device can be simplified as compared with the case where the members are individually switched.

  According to a fifth feature configuration of the present invention, in any one of the first to fourth feature configurations, the storage device is a main storage rack, and the storage device transfer device stores the storage device. It is in the point comprised so that it may travel between the storage shelf to perform and the said container transfer location, and the said container may be conveyed.

  In other words, even if the rack is tall and may have a high center of gravity, the locking portion is locked when the traveling carriage is moved with the rack placed on the mounting portion. This can prevent the rack from falling down.

[First embodiment]
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment when a container transport device according to the present invention is applied to an automatic warehouse will be described with reference to the drawings.
As shown in FIG. 1, storage shelves 2 having a plurality of storage units 1 are installed in pairs on the floor F with the fronts facing each other, and the storage shelves 2 forming the pair A stacker crane rail 3 is laid in a straight line on the floor F between them, and a stacker crane 4 serving as a container transfer device that moves along the rail 3 for the stacker crane is an article storage shelf 2. It is provided so that it can automatically run along the frontage.

  A rack transport device 8 serving as a container transport device is provided on one side in the direction along the front of each of the article storage shelves 2, and each rack transport device 8 is in parallel with the rail 3 for the stacker crane. The rails 7 for the pair of left and right rack transport devices are laid in a straight line on the floor surface F, and a mounting portion 10 for a main storage rack (corresponding to a container) A is provided on the pair of left and right rails 7. The traveling cart 9 is configured to be able to travel.

  And the one end side in the driving | running route of the driving | running | working trolley | bogie 9 is set to the rack transfer location X as a container transfer location where the rack A is loaded and unloaded with the stacker crane 4, and the other end side is described above. It is set as a processing location Y for processing the rack A placed on the placement unit 10, and the stacker crane 4 is located between the storage shelf 2 storing the rack A and the storage device transfer location X. It is comprised so that it may drive | work and convey the said rack, and the driving | running | working trolley 9 is comprised so that it can drive | work over the said rack transfer location X and the said process location Y. FIG.

  Further, as shown in FIG. 1, the wall body 13 partitions the storage area where the rack transfer location X exists and the processing area where the processing location Y exists. The wall 13 is formed with an opening 15 that is opened and closed by an open / close door 14 that slides up and down in the vertical direction, and the rail 7 for the rack transporter passes through the opening 15 of the wall 13 and receives a storage area. And the processing area. In the processing area, a work table D for an operator to perform processing such as loading / unloading of books into / from the rack A is provided in a state separated from the floor surface F by a set height.

Next, the traveling carriage 9 will be described.
As shown in FIGS. 1 to 4, the traveling carriage 9 is engaged with a locked portion 31 provided in the rack A to prevent the rack A from falling and the locked state. A locking portion 32 that can be switched to a release state in which the engagement with the portion 31 is released, a biasing means 33 that biases the locking portion 32 back to the locking state, and the traveling carriage 9 is mounted on the rack. As the transfer portion X moves to the transfer location X, the engagement moves against the urging force of the urging means 33 due to the backward movement by contacting the contact member 34 provided corresponding to the rack transfer location X. An operation unit 35 for switching the stop 32 to the release state is provided. As shown in FIG. 2, the rack A is composed of a main body portion 5 for storing a book and a leg portion 6 for supporting the main body portion 5. The leg portion 6 has a rectangular shape in plan view with a frame material. The bottom portion 6a is provided on the bottom portion 6a. A portion of the bottom portion 6a that engages with the locking portion 32 is formed in the locked portion 31.

  As shown in FIG. 2, the traveling carriage 9 includes a main body portion 17 including the mounting portion 10 and a traveling portion 18 including a traveling wheel 19 that rolls on the rail 7 for the rack transport device. It is prepared for. The traveling unit 18 includes a traveling side frame 25 formed in a rectangular shape in a plan view by a frame material, the traveling wheel 19 provided with a total of four pairs of front and rear on each of the left and right sides, and the four traveling wheels. The traveling position of the traveling carriage 9 is detected by contact between a traveling electric motor 26 that drives one of the drive wheels 19 a in the forward and reverse rotations 19 and a detection piece (not shown) provided on the floor surface F. The limit switch 20 is provided. Further, as shown in FIG. 4, the main body portion 17 includes a main body side frame body 24 that is formed in a rectangular shape in a plan view with a frame material, and mounting support members 37 are erected at four corners, and the locking portion. 32, the urging means 33, the operation portion 35, and the main body side frame 24, the locking portion 32, the urging means 33, and the main body cover 23 that covers the operation portion 35.

  As shown in FIG. 3, the main body side frame body 24 and the traveling side frame body 25 are connected to each other by a connecting member 21 that is formed of a plate material in a front view and is formed on the work table D. When the traveling carriage 9 travels so that the narrow upper and lower central portions of the coupling portion 21 pass through the connecting member passage slit 22, and the traveling carriage 9 is located in the processing area, the traveling section 18 is The main body 17 is positioned below the work table D, and the main body 17 is positioned above the work table D.

As shown in FIGS. 2 and 4, the placement unit 10 provided in the traveling carriage 9 is installed at a position corresponding to each of the right front part, the left front part, the right rear part, and the left rear part of the traveling carriage 9. The rack A is provided with a mounting support member 37 for mounting and supporting each of the bottom four corners of the rack A, and each of the mounting support members 37 has the rack in one of the front and rear directions. A front-rear direction restricting body 38 that restricts the movement of A and a left-right direction restricting body 39 that restricts the movement of the rack A in any one of the left and right directions are provided. The upper end portions of the mounting support members 37 are provided so as to protrude upward from the upper surface of the main body cover 23.
That is, the mounting support member 37 erected on the left front portion and the right front portion of the traveling carriage 9 is provided with the front-rear direction restricting body 38 that restricts the movement of the rack A in the forward direction. The mounting support member 37 erected on the left rear part and the right rear part is provided with a front-rear direction restricting body 38 that restricts the movement of the rack A in the rear direction. The mounting support member 37 erected on the left front portion and the left rear portion of the traveling carriage 9 is provided with a left and right direction restricting body 39 that restricts the movement of the rack A in the left direction. The placement support member 37 erected on the front and right rear is provided with a left-right restricting body 39 that restricts the movement of the rack A in the right direction. Therefore, the movement of the rack A placed on the placement unit 10 in the front-rear direction is restricted by the front-rear direction restricting body 38, and the movement in the left-right direction is restricted by the left-right direction restricting body 39.

Next, a configuration for preventing the rack A from falling will be described in detail.
As shown in FIGS. 2 and 4, the mounting support member 37 erected at the front right side of the traveling carriage 9 at the front portion of the traveling carriage 9 and the left front portion of the traveling carriage 9. A front locking member 32 </ b> A is provided between the traveling support 9 and the mounting support member 37, and the mounting support member 37 and the traveling cart 9 are erected on the right rear portion of the traveling cart 9 at the rear of the traveling cart 9. A rear locking member 32B is provided between the rear supporting member 37 and the mounting support member 37 standing on the left rear portion of the rack, and the front locking member 32A and the rear locking member 32B are in the locked state in the rack. It is configured to engage with the locked portion 31 so as to prevent the A from rising.
The locking portion 32 includes the front locking member 32A and the rear locking member 32B, and prevents the front portion of the rack A from being lifted by the locked front locking member 32A. The rear locking member 32B in the locked state is configured to prevent the rack A from falling over by preventing the rear portion of the rack A from lifting.

  As shown in FIG. 4, the locking portion 32 is configured to be switched between the locked state and the released state by swinging around the vertical axis. The operation unit 35 includes a rod-shaped member 40 configured to move backward in a form of sliding in the axial direction by contact with the contact member 34, and the rod-shaped member 40 and the locking portion 32. The front locking member 32A and the rear locking member 32B provided are provided with a pair of connecting portions 36 for interlocking connection.

  That is, as shown in FIGS. 4 and 5, the rotation shaft 43 is rotatably supported around the longitudinal axis around each of the pair of front and rear rotation bushes 44 provided in the traveling carriage 9, and the pair of front and rear rotations thereof. A front locking member 32A and a rear locking member 32B are distributed and connected to an upper end portion of the shaft 43 protruding upward from the main body cover 23, and a pinion gear 42 is fixed to each of the lower end portions of the pair of front and rear rotating shafts 43. . The rod-like member 40 is slid in the axial direction by a slide bush 45 provided on the traveling carriage 9 with the front end 40a projecting forward from the main body cover 23 along the traveling direction of the traveling carriage 9. It is supported freely. A rack member 41 that meshes with the pinion gear 42 is provided on the side surface of the rod-like member 40. Accordingly, the rack member 41 is moved by the sliding movement of the rod-shaped member 40 in the axial direction, and the movement of the rack member 41 causes each of the pinion gears 42 to rotate around the vertical axis, thereby causing the front locking member 32A and the rear engaging member 32A to move. The locking member 32B is configured to swing around the axis of the vertical axis and switch between the locked state and the released state. The biasing means 33 is configured by providing a compression spring between the slide bush 45 and a member fixed to the rod-shaped member 40, and the rod-shaped member 40 is moved forward by the biasing means 33. That is, it is urged toward the side protruding from the main body cover 23, whereby the locking tool 32 is urged to return to the locked state side. The rack member 41, the pinion gear 42, and the rotating shaft 43 constitute a connecting portion 36.

Therefore, as shown in FIG. 5 (a), when the traveling carriage 9 is traveling over the rack transfer location X and the processing location Y, the biasing means 33 is returned to the locked state. Thus, the front locking member 32A and the rear locking member 32B are switched to the locked state. Then, as shown in FIG. 5B, the front end portion of the rod-shaped member 40 is attached to the contact member 34 provided corresponding to the rack transfer location X as the traveling carriage 9 moves to the rack transfer location X. 40a is brought into contact, and the rod-like member 40 is moved backward against the urging force of the urging means 33 by the movement of the traveling carriage 9 toward the rack transfer location X, so that the front locking member 32A and the rear locking member are moved back. 32B is switched to the release state. Further, when the traveling cart 9 travels toward the processing location Y and the traveling cart 9 moves away from the rack transfer location X, as shown in FIG. 5 (a), it contacts the front end portion 40a of the rod-shaped member 40. When the contact with the member 34 is released, the front locking member 32A and the rear locking member 32B are returned and urged by the urging force of the urging means 33 to be switched to the locked state.
At the processing location Y, the front locking member 32A and the rear locking member 32B are maintained in the locked state to prevent the rack A from falling when the book A is loaded into or removed from the rack A. be able to.

Next, the control configuration of the automatic warehouse will be described.
As shown in FIG. 6, the operation of the door electric motor 47 that moves the stacker crane 4 and the open / close door 14 up and down is controlled, and the operation command from the calling command means 48 and the detection information from the stacker crane 4 are input. A computer H1 and a sub-controller H2 that controls the operation of the electric motor 26 for traveling in each rack transporter 8 and receives detection information from the limit switch 20 are provided. The main controller H1 and the sub-controller H2 Information can be exchanged between the two.

That is, when a call command for calling the rack A is commanded by the call command means 48, the rack A corresponding to the call command is loaded from the storage rack 2 to the rack transfer location X by the stacker crane 4. Then, the traveling electric motor 26 is operated to cause the traveling carriage 9 to travel toward the processing point Y. Thereafter, when the limit switch 20 detects that the traveling carriage 9 has moved to the processing location, the traveling electric motor 26 is stopped.
When the call command means 48 commands the end of the processing for the rack A, the electric motor 26 for traveling is operated to cause the traveling cart 9 to travel toward the rack transfer location X, and then the traveling cart 9 The rack A placed on the placement unit 10 is transferred to the original storage unit 1.

  When the traveling cart 9 travels between the rack transfer location X and the processing location Y, the door electric motor 47 is activated when the limit switch 20 detects that the traveling cart 9 has approached the door 14. When the limit switch 20 detects that the traveling carriage 9 is separated from the door 14, the door electric motor 47 is actuated to close the door 14.

[Second Embodiment]
In the second embodiment, the connecting portion 36 in the operation portion 35 is engaged with the pin 49 provided on the rod-shaped member 40, the rotating shaft 43, and the pin 49 fixedly engaged with the rotating shaft 43. The joint portion 50 is provided, and this point will be mainly described with reference to the drawings. Since other configurations are the same as those in the first embodiment, detailed description thereof will be omitted by using the same reference numerals.

As shown in FIGS. 7 and 8, the front locking member 32 </ b> A and the rear locking member 32 </ b> B are distributed and connected to the upper ends of a pair of front and rear rotating shafts 43 that are rotatably supported by the rotating bush 44 around the axis of the vertical axis. In addition, a plate-like engagement portion 50 is connected to each lower end portion of the rotation shaft 43. And the pin 49 engaged with the engagement hole 51 with which the engaging part 50 was equipped on the upper surface of the rod-shaped member 40 is standingly arranged, and when the rod-shaped member 40 slides to an axial direction, Due to the movement, the engaging portion 50 is swung around the vertical axis, and the front locking member 32A and the rear locking member 32B are swung around the vertical axis to be switched between the locked state and the released state. It is configured.
The engagement hole 51 is formed in a long hole so that the engagement plate 50 can swing when the rod-shaped member 40 slides.

[Another embodiment]
(1) In the above embodiment, as the locking portion 32, two engagements of the front locking member 32 </ b> A provided at the front portion of the traveling carriage 9 and the rear locking member 32 </ b> B provided at the rear portion of the traveling carriage 9. Although it is configured with a stop member, the locking portion 32 may be configured with one locking member, or may be configured with three or more locking members, and the position where the locking member is provided also travels. The central part, the right part or the left part of the carriage 9 may be used, and is not limited to the front part or the rear part of the traveling carriage 9.

(2) In the above embodiment, the locking portion 32 is configured to be switched between the locked state and the released state by swinging around the vertical axis. You may comprise so that it may switch to a stop state and a cancellation | release state. Moreover, you may comprise so that it can switch to a latching state and a cancellation | release state by the latching | locking part 32 slidingly moving in the sliding direction of the rod-shaped member 40, or the direction which cross | intersects this sliding direction.

(3) In the above-described embodiment, one rod-like member 40 and a pair of connecting portions 36 for interlockingly connecting the one rod-like member 40 to the front locking member 32A and the rear locking member 32B are provided. The two rod-shaped members 40 are configured to be able to switch both the front locking member 32A and the rear locking member 32B by moving backward, but the pair of rod-shaped members 40 and the pair of rod-shaped members 40 A connecting portion 36 for interlockingly connecting one of the front locking members 32A and a connecting portion 36 for interlockingly connecting the other of the pair of rod-shaped members 40 and the rear locking member 32B. The locking member 32A and the rear locking member 32B may be configured to be individually switched.

(4) In the above embodiment, the storage device A is a rack for book storage, but it may be used for storing other articles other than books, and other storage such as containers for storing the articles. A vessel may be used.

Floor plan of automated warehouse Perspective view of rack transport device Front view of rack transport device Cross-sectional side view of main body in rack transporter Action diagram of rack transporter Automatic warehouse control block diagram Side view of rack transport apparatus according to second embodiment Operational diagram of the rack transport device in the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Storage shelf 4 Storage device transfer apparatus 8 Storage device conveyance apparatus 9 Traveling carriage 10 Mounting part 31 Locked part 32 Locking part 32a Front locking member 32b Rear locking member 33 Energizing means 34 Contacting member 35 Operation Part 36 Connection part 37 Placement support member 38 Front-rear direction restricting body 39 Left-right direction restricting body 40 Bar-shaped member A Container X Container transfer position Y Processing position

Claims (5)

A traveling carriage equipped with a storage unit is mounted on a storage device transfer position where the storage device is loaded and unloaded on the storage device by the storage device transfer device, and on the storage device mounted on the storage device. A container transport device configured to be able to travel over a processing location for processing,
The traveling carriage can be switched between a locked state that prevents the container from falling by engaging with a locked portion provided in the container, and a released state that releases the engagement with the locked portion. And a biasing means for biasing the latching portion back to the latched state, and corresponding to the container transfer position as the traveling carriage moves to the container transfer position. A storage unit provided with an operation unit that switches the locking unit to the released state against the urging force of the urging means by retreating by contacting the abutting member provided Conveying device. The placement unit is installed at a position corresponding to each of a right front part, a left front part, a right rear part, and a left rear part of the traveling carriage, and each of the four corners of the bottom part of the container is placed and supported. Each of the mounting support members is configured to include a mounting support member, and a front-rear direction restricting body that restricts movement of the storage device in any one of the front-rear directions and any one of the left-right directions. A left-right restricting body for restricting movement of the container is provided;
The mounting support member, wherein the locking portion is erected on the front right side of the traveling carriage at the front portion of the traveling carriage, and the placement support member is erected on the left front part of the traveling carriage. A front locking member provided in between, a front support member standing at a rear right side of the travel cart at a rear portion of the travel cart, and a front support member standing at a rear left side of the travel cart And a rear locking member provided between the front locking member and the rear locking member so as to prevent the container from being lifted in the locked state. The container transport device according to claim 1, wherein the container transport device is configured to engage with the portion.   The container transport device according to claim 2, wherein the locking portion is configured to be switched between the locked state and the released state by swinging around a longitudinal axis.   A rod-shaped member configured to retreat in a form in which the operation portion slides in the axial direction by contact with the contact member, and the front locking provided in the rod-shaped member and the locking portion The container transport device according to claim 2 or 3, comprising a pair of connecting portions for interlockingly connecting a member and the rear locking member.   The storage device is a rack for main storage, and the storage device transfer device travels between a storage shelf that stores the storage device and the storage device transfer location so as to transport the storage device. The container transport device according to any one of claims 1 to 4, wherein the container transport device is configured as described above.

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