ARTICLE STORAGE FACILITY

• US 20120189411A1
• Filed: 06/30/2010
• Published: 07/26/2012
• Est. Priority Date: 07/14/2009
• Status: Active Grant

• Current Assignee: Daifuku Company Limited
• Original Assignee: Daifuku Company Limited
• Inventors: Yoshinaga, Kazuharu
• Granted Patent: US 8,670,861 B2
• Time in Patent Office: Days
• US Class Current: 414/273
• CPC Class Codes: B65G 1/0407 using stacker cranes constructional features of stacker cranes B66F9/06
• CPC Class Codes: B66F 9/07 Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"

Abstract

An article storage facility with a storing shelf structured by lining up a plurality of article storage units in the vertical direction and the horizontal direction. A stacker crane travels along a traveling rail to transport articles to each article storage unit. The stacker crane has a traveling cart having a pair of vertical-movement guiding masts set upright on both ends of the traveling cart in the front-back width direction, and a vertical-movement platform movable vertically along the pair of vertical-movement guiding masts between the pair of vertical-movement guiding masts. An article transfer device is provided on the vertical-movement platform. The stacker crane has a work frame, having a width in the sideways direction of the traveling cart and the front-back width direction of the traveling cart between the pair of vertical-movement guiding masts structured so as to be freely attached and removed.

Claims

1. An article storage facility comprising storing shelves configured with a plurality of article storage units lined un in a vertical and breadthwise direction, a stacker crane being arranged to be runnable along travelling rails provided at the front side of the storing shelve along a sideways widthwise direction of the shelves along the sideways widthwise direction of the storing shelves to convey articles to each of the article storage units, and a crane control means for controlling the actuation of the stacker crane;

wherein said stacker crane comprises a travelling cart runnable along the travelling rails, a pair of vertical-movement guiding masts being stood from both edge portions of the travelling cart in the front-back width direction of the travelling cart, a platform being freely lifted along the pair of front and rear vertical-movement guiding masts therebetween, and an article transfer device being provided to the platform;

wherein said stacker crane is constructed so as to have a work frame between said pair of front and rear vertical-movement guiding masts, which is attachable thereto or detachable therefrom, with a setup width in the front-back width direction and the sideways widthwise direction of the travelling cart.

2. An article storage facility according to claim 1, wherein the work frame having a width extending across the full length of the distance between the pair of vertical-movement guiding masts in the front-back width direction of the travelling cart, is comprised of edge members located on the edges of the travelling cart in the front-back width direction thereof, and an intermediate member connecting the edge members to each other;

and

wherein said edge members are fixed to the vertical-movement guiding masts, respectively, so as not to interfere with the platform, and wherein said intermediate member is arranged to be attachable to and detachable from the edge members.

3. An article storage facility according to claim 2, wherein the edge members have a rod-like shape being extended from the vertical-movement guiding masts to both sides of the travelling cart in the sideways widthwise direction;

and wherein the intermediate member is comprised of a pair of rod-like shaped first intermediate sub-members, which can be installed to or uninstalled from the edge portions of the edge members in the width direction of the travelling cart, respectively, and being extended in the front-back width direction of the travelling cart when it is installed to the edge members, a plate-like second intermediate sub-member, which can be installed to or uninstalled from the pair of first intermediate sub-members so as to be extended across the pair of first intermediate sub-members, and a bars-like shaped third intermediate sub-member, which can be installed to or uninstalled from the pair of first intermediate sub-members so as to be extended in an upper direction.

4. An article storage facility according to claim 3, wherein the edge members are arranged to be installable to the masts in a condition in which they receive and support the first intermediate sub-members from the lower side and the first intermediate sub-members are arranged to be installable to the edge members in a condition in which they receive and support the second intermediate sub-members from the lower side.

5. An article storage facility according to claim 1 further comprising an install condition detecting means for detecting an install condition of the work frame between the pair of vertical-movement guiding masts, wherein the crane controlling means inhibits the lifting activity of the platform when the install condition detecting means detects a fact that the work frame has been installed.

6. An article storage facility according to claim 1, wherein the work frame can be freely be installed to a plurality of install positions, which are arranged to be spaced in a vertical direction;

and the lowest install position among the plurality of install portions is arranged at a position in a side higher than the region, which the platform itself and articles existing on the platform occupy when the platform is moved to the lowest position of the lifting range of the platform.

7. An article storage facility according to claim 2 further comprising an install condition detecting means for detecting an install condition of the work frame between the pair of vertical-movement guiding masts, wherein the crane controlling means inhibits the lifting activity of the platform when the install condition detecting means detects a fact that the work frame has been installed.

8. An article storage facility according to claim 3 further comprising an install condition detecting means for detecting an install condition of the work frame between the pair of vertical-movement guiding masts, wherein the crane controlling means inhibits the lifting activity of the platform when the install condition detecting means detects a fact that the work frame has been installed.

9. An article storage facility according to claim 4 further comprising an install condition detecting means for detecting an install condition of the work frame between the pair of vertical-movement guiding masts, wherein the crane controlling means inhibits the lifting activity of the platform when the install condition detecting means detects a fact that the work frame has been installed.

10. An article storage facility according to claim 2, wherein the work frame can be freely be installed to a plurality of install positions, which are arranged to be spaced in a vertical direction;

and the lowest install position among the plurality of install portions is arranged at a position in a side higher than the region, which the platform itself and articles existing on the platform occupy when the platform is moved to the lowest position of the lifting range of the platform.

11. An article storage facility according to claim 3, wherein the work frame can be freely be installed to a plurality of install positions, which are arranged to be spaced in a vertical direction;

and the lowest install position among the plurality of install portions is arranged at a position in a side higher than the region, which the platform itself and articles existing on the platform occupy when the platform is moved to the lowest position of the lifting range of the platform.

12. An article storage facility according to claim 4, wherein the work frame can be freely be installed to a plurality of install positions, which are arranged to be spaced in a vertical direction;

and the lowest install position among the plurality of install portions is arranged at a position in a side higher than the region, which the platform itself and articles existing on the platform occupy when the platform is moved to the lowest position of the lifting range of the platform.

13. An article storage facility according to claim 5, wherein the work frame can be freely be installed to a plurality of install positions, which are arranged to be spaced in a vertical direction;

and the lowest install position among the plurality of install portions is arranged at a position in a side higher than the region, which the platform itself and articles existing on the platform occupy when the platform is moved to the lowest position of the lifting range of the platform.