JP2018034968A - Twin shuttle rack system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a twin shuttle rack system which greatly improves storage efficiency and workability in a pallet rack for automatically transferring pallets. SOLUTION: A rack 1 having two shuttles 2a and 2b, three rail blocks 3a, 3b and 3c for running wheels 2c and 2d of two shuttles, and pallets 5a and 5b in the left-right direction. A twin shuttle rack system 10 having a fork lift (not shown) having two forks that carry the two rail blocks side by side, and each rail block 3a, 3b, 3c is a rail block lower surface 3e by an orthogonal horizontal member 4. The rail blocks supported by the rail blocks on the left and right sides and in the center have protruding portions 3h, 3i, 3m, and 3n on the lower parts B1, C1, A1, and A2, which serve as treads for running the wheels of the shuttles 2a and 2b, respectively. Each has a receiving surface 3p for mounting the pallet 5 on the upper surface thereof, and the shuttles 2a and 2b have devices 2g and 2h for raising and lowering the pallets 5a and 5b. [Selection diagram] Fig. 1

Description

  The present invention relates to a twin shuttle rack system.

One of the major technologies in the logistics industry is equipment and systems for handling cargo in warehouses. There are storage facilities such as shelves and racks for storing and storing a lot of luggage in a warehouse, and various systems for loading and unloading the luggage are known.
Pallet racks (heavy racks / heavy shelves) are the most common storage devices that store and store luggage in a warehouse or factory using a cargo handling table for loading luggage called pallets. The most representative of the pallets is a slat-shaped cargo handling board called a flat pallet. The cargo is placed on the flat pallet, and a fork lift is used to insert a fork-like protrusion into the opening of the flat pallet to lift the baggage together with the pallet and carry it onto the pallet rack mounting table for storage.

A storage device called a shuttle rack (registered trademark) is used for the purpose of improving the efficiency of the storage space of the pallet and the carrying-in / out operation. In this apparatus, after a pallet loaded with loads by a forklift is placed on a pallet rack mounting table, a dedicated transfer device called a shuttle installed under the mounting table lifts the pallet and mounts the pallet. It is transported to the final storage position at the back of the machine, and it returns to the original position and waits. This forklift performs the pallet loading work only at the front edge of the mounting table, and the shuttle moves the pallet to the storage position (the reverse is the opposite when unloading), so the storage efficiency and loading / unloading workability are significantly greater than before. Was streamlined.
On the other hand, a four-claw forklift that can simultaneously transport two pallets arranged on the left and right has been put into practical use.

  Patent Document 1 describes the technology of a shuttle pallet for a high-rise rack type storage system. A shuttle pallet is a pallet transfer device called a shuttle in the present application. Patent document 1 is an invention about the structure which makes this shuttle pallet compatible with various pallets and pallets having defects.

Special table 2011-501208 gazette

Although the storage efficiency and work-in / out operability are greatly improved by the shuttle rack (registered trademark), this storage device is a system for transporting one pallet. Since the same goods are often stored in large quantities at once, further workability improvement, that is, improvement in carry-in / out efficiency has been required. As one method, a pallet in a loaded state (hereinafter simply referred to as a pallet) can be transported by the above-mentioned four-claw forklift in a state where two pallets are arranged side by side, and loaded and stored as it is. It is done.
However, under the present circumstances, even though two pallets can be transported side by side with the forklift, they cannot be transported as they are to the shuttle rack (registered trademark). This is because, in the space between the two pallets, a column to which a rail block for mounting the pallet is attached is disposed, and this column becomes an obstacle.
The technique of Patent Document 1 is for improving the compatibility with various pallets, and cannot be applied to the above-described problem of the present invention.
Furthermore, for trucks and containers, when carrying pallets, the work has conventionally been carried out using a forklift on the truck or container loading platform, but this also requires improved workability.

The present invention solves the above-described problems, and enables one pallet forklift and two shuttles to be used to carry in and out two pallets at the same time. It is an object of the present invention to provide a shuttle rack system that greatly improves workability in a pallet rack to be performed.
It is another object of the present invention to provide a truck or container that greatly improves workability for carrying out and carrying in pallets by installing the shuttle rack system rack on a truck or container loading platform.

In order to solve the above-mentioned problems, the invention of claim 1 is directed to two shuttles for traveling in the front-rear direction by placing a pallet, and three rail blocks for traveling the wheels of the two shuttles. A twin shuttle rack system comprising: a rack having a pallet; and a forklift having a fork that carries two pallets arranged side by side in the left-right direction and has a fork placed in the above-described state at a predetermined position for loading and unloading the rail block. In the rack, the rail block is disposed at the left and right ends and the center with respect to the traveling direction of the shuttle, and each rail block is supported on the lower surface of the rail block by a plurality of horizontal members orthogonal to the rail block. The cross-sectional shape perpendicular to the traveling direction of the rail block is substantially rectangular, and the rail blocks arranged on both the left and right sides The rail block in the center has protrusions that serve as treads for the shuttle wheels to run on the lower part of the left and right side surfaces. Each rail block further has a horizontal receiving surface for placing a pallet on each upper surface, and the shuttle is arranged in parallel between each rail block by arranging wheels on the protruding portion of the rail block. It is installed, and the height of the upper surface of the shuttle is configured to be lower than the height of the upper surface of the rail block, and further includes a device for raising and lowering the pallet placed on the upper surface of the rail block.
According to the second aspect of the present invention, there is no support by a horizontal member on the lower surface of the front end of the rail block at a predetermined position for loading / unloading, and the rail block is against the horizontal member disposed at the foremost part of the horizontal member. It is characterized by an overhanging configuration.
According to a third aspect of the present invention, the front end of the rail block at a predetermined position for loading / unloading is supported by a horizontal member on the lower surface, and each rail block height dimension is larger than the rail block height dimension of the second aspect. It is characterized by being.
The invention of claim 4 is further characterized in that in the rack, a plurality of sets of three rail blocks and a plurality of horizontal support members are arranged in the left-right direction and the up-down direction.
A fifth aspect of the present invention is a truck characterized in that the shuttle and the rack according to the first to third aspects are arranged on a loading platform.
A sixth aspect of the present invention is a container characterized in that the shuttle and the rack according to the first to third aspects are arranged on a loading platform.

  The present invention provides a twin shuttle rack system that greatly improves storage efficiency and workability in a pallet rack that automatically transfers pallets. Furthermore, there are provided a truck and a container that can greatly improve the workability of the work of carrying out the work from the pallet loaded with the load on the pallet and the work on the work to the load.

It is a layout view of the rack and shuttle of the first embodiment. It is a forklift top view of a 1st embodiment. It is a figure which shows the rail block front-end | tip part of 1st Embodiment. It is a figure which shows the rail block front-end | tip part of 2nd Embodiment. It is a layout diagram of a rack and a shuttle of the third embodiment. It is a schematic diagram which shows the track | truck of 4th Embodiment. It is a schematic diagram which shows the pallet carrying in / out operation | work from the conventional truck. It is explanatory drawing of storage efficiency and workability | operativity.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
First, the configuration of the twin shuttle rack system of this embodiment will be described.
As shown in FIG. 1, two shuttles 2a, 2b for placing pallets 5a, 5b and running in the front-rear direction, and three rails for running the two shuttle wheels 2c, 2d The rack 1 having the blocks 3a, 3b, and 3c and the two pallets 5a and 5b are transported in the left-right direction, and placed in the above-described state at the predetermined loading and unloading position E of the rail blocks 3a, 3b, and 3c. The twin shuttle rack system 10 includes one forklift 7 (see FIG. 2) having a fork 7a, and the rail blocks 3a, 3b, and 3c are arranged at the center A in the rack 1 with respect to the traveling direction of the shuttles 2a and 2b. The rail blocks 3a, 3b, 3c are supported on the lower surface 3e of the rail blocks 3a, 3b, 3c by a plurality of orthogonal horizontal members 4. The cross section of the rail blocks 3a, 3b, 3c perpendicular to the direction of travel is substantially rectangular, and the rail blocks 3b, 3c arranged on the left and right sides are respectively lower portions B1, C1 on the inner side facing each other. 3a and 3b, and the central rail block 3a is connected to the lower portions A1 and A2 on both the left and right side surfaces of the shuttle 2a. 2b wheels 2c, 2d have projecting portions 3m, 3n that become tread surfaces 3j, 3k on which the rails 3a, 3b, 3c further mount pallets 5 on their upper surfaces. The shuttles 2a and 2b are respectively provided with wheels 2c and 2d on the rail block protrusions 3h, 3m and 3n and 3i, respectively, and between the rail blocks 3b-3a. 2a and 3c are arranged in parallel, and the height of the shuttle upper surfaces 2e, 2f is configured to be lower than the height of the upper surface 3p of the rail blocks 3a, 3b, 3c, and further on the upper surfaces of the rail blocks 3a, 3b, 3c. There are devices 2g and 2h for raising and lowering the mounted pallets 5a and 5b.

  As shown in FIG. 3 (indicated by arrow DD in FIG. 1), the lower surface 3e of the front end portion of the rail blocks 3a, 3b, and 3c at the predetermined loading and unloading position E is not supported by the horizontal member 4, and the rail block 3a. Reference numerals 3b and 3c denote configurations in which the horizontal member 4 is overhanged with respect to the horizontal member 4a disposed in the foremost part. This is a configuration for securing a space for inserting the forks 7a into the lower portions of the shuttles 2a and 2b when the shuttles 2a and 2b are carried in and out by the forklift 7 at the predetermined loading and unloading position E.

Next, in the twin shuttle rack system 10 of the present embodiment, the pallets 5a and 5b loaded with the load 6 are unloaded from the truck 8 described later or a loading platform of a container (not shown) using the forklift 7, and the rack 1 is carried out. The procedure for storing from the predetermined entry position E will be described.
First, the four-fork fork 7a of the forklift 7 is inserted into the transport opening of the truck 8 or the pallets 5a and 5b (loading the luggage 6) arranged on the left and right on the truck bed of the container. Lift at the same time. Next, in this state, the pallets 5a and 5b are transported to the predetermined loading / unloading position E of the rack 1 by the forklift 7, and are simultaneously placed on the upper surface 3d of the rail blocks 3a, 3b and 3c in the state shown in FIG. Thereafter, the shuttles 2a and 2b, which have been waiting in the rear, move forward and move directly under the pallets 5a and 5b, and the pallets 5a and 5b are moved by the respective lifting devices 2g and 2h.
Is lifted from the upper surface 3d of the rail blocks 3a, 3b, 3c and transferred to a predetermined storage position. Therefore, after the pallets 5a and 5b are lowered by the lifting devices 2g and 2h and placed on the upper surface 3d of the rail blocks 3a, 3b and 3c, the shuttles 2a and 2b move to a standby position behind the predetermined loading / unloading position E. Ready for the next pallet 5a, 5b. For carrying out work from the rack 1, the above procedure is reversed.

Next, the configuration of the second embodiment will be described.
In the second embodiment, as shown in FIG. 4 (corresponding part with the same part in FIG. 3), the front ends of the rail blocks 3a, 3b, 3c at the predetermined loading / unloading position E are supported by the horizontal member 4 on the lower surface. The height dimension H2 of each rail block 3a, 3b, 3c is larger than the height dimension H1 of the rail blocks 3a, 3b, 3c in the first embodiment (H2> H1). This is to secure a space for inserting the forks 7a into the lower portions of the shuttles 2a and 2b when the shuttles 2a and 2b are carried in and out by the forklift 7 at the predetermined position E for loading and unloading as in the first embodiment. It is the structure for.

Next, the configuration of the third embodiment will be described.
In the third embodiment, as shown in FIG. 5, in the rack 1a, a plurality of sets of three rail blocks 3a, 3b, 3c and a plurality of horizontal support members 4 are arranged in the left-right direction and the up-down direction. When carrying in and carrying out the pallets 5a and 5b loaded with the load 6, the shuttles 2a and 2b are previously moved by the forklift 7 among the plurality of rail blocks 3a, 3b, and 3c on the upper and lower sides and the left and right sides, and then the pallet 2a. 2b is carried to a predetermined loading / unloading position (for example, E1) where the loading / unloading work of 2b is performed, and is set to the rail blocks 3a, 3b, 3c. And in E1, the forklift 7 carries out the loading / unloading operation of the pallets 5a and 5b.

  As described above, since a space for inserting the forks 7a into the lower portions of the shuttles 2a and 2b is secured at the respective loading and unloading predetermined positions, the rail blocks 3a and 2b for storing the shuttles 2a and 2b by the forklift 7 are provided. It can be easily transported and moved in a state where two units are arranged in 3b and 3c.

In the fourth embodiment, as shown in FIG. 6, the shuttles 2 a and 2 b and the rack 1 of the first embodiment are arranged on a loading platform 8 a of a truck 8.
Conventionally, loads loaded and unloaded on pallets have been loaded and unloaded from the left and right sides of a laterally open wing truck (hereinafter simply referred to as a truck). In the truck 8 of the present embodiment, the above-mentioned loading / unloading operation by the forklift 7 can be performed only at the last loading / unloading predetermined position F, and the pallets 5a and 5b can be transferred from the loading / unloading predetermined position F to the final loading position, or Since the shuttles 2a and 2b transfer the pallets 5a and 5b from the loading position to the predetermined loading / unloading position F, work efficiency is improved. Further, the flow line of the forklift 7 is shortened, and the workability is improved.

  Conventionally, as shown in FIG. 7, there is a case in which a load loaded on a pallet is carried in and out by entering a cargo bed from the tail of the truck with a forklift. Even in comparison with this, the truck 8 of the present embodiment can reduce the reciprocation time of the forklift 7 in the loading platform and improve the work safety. In this embodiment, the shuttles 2a, 2b and the rack 1 of the first embodiment are arranged on the loading platform 8a of the truck 8 in FIG. 6, but the shuttles 2a, 2b and the rack 1 of the second embodiment are arranged. However, the same effect can be obtained.

  As in the case of the truck shown in FIG. 6, the configuration of the fifth embodiment is such that the shuttles 2a, 2b and the rack 1 of the first embodiment are arranged on the container bed, and the functions and effects are also provided. This is the same as in the fourth embodiment. Even if the shuttles 2a and 2b and the rack 1 of the second embodiment are arranged on the container bed, the same effect can be obtained.

  The technology that is the point of the present invention is a “shuttle rack system that can carry in and out two pallets loaded with cargoes side by side without any gaps”. The system refers to equipment such as a rack (shelf), a shuttle, and a forklift, and the entire apparatus. And by arranging a rack (shelf) having the same configuration as the shuttle rack system and a shuttle on the truck and container loading platform for transporting the cargo stored in this system from a remote location or to a remote location, The improvement in storage efficiency and workability according to the present invention is completed as a whole.

  Among the technologies that become the above points, there has already been a forklift that can carry the cargo on two pallets side by side without gaps. However, there was no shuttle rack in that state, that is, “with the cargoes on the two pallets arranged side by side with no gaps” in and out of that state.

  This is due to the very small gap size of the load on the pallet in the “side-by-side arrangement without gap”. This is a critical dimension that is determined by the lateral width of the truck bed. Actually, the gap dimension P is P = 30 to 70 mm as shown in FIG. In the conventional shuttle rack, the distance between the runways of the adjacent shuttles is about 250 mm, and the rails for the wheels of each shuttle and the columns for installing the rails are arranged at this distance. As described above, in order to carry the rack as it is in a state where the pallets are arranged on the left and right sides with the clearance between the packages of 30 to 70 mm, it is necessary to make the rack configuration completely different.

  In the present embodiment, the above-described problem is configured such that the three rail blocks are supported in the orthogonal direction from the bottom as described above, and the pillars existing between the pallets stored side by side in the conventional shuttle rack are removed. It was solved by that. The rail block support structure uses horizontal beams instead of pillars. The distance between the left and right pallets and shuttles is reduced to the minimum, and two pallets loaded on a truck are placed side-by-side by a forklift and transported and loaded simultaneously. A twin shuttle rack system that can be used.

Here, the storage efficiency and workability, and these improvements by the shuttle rack will be described in detail.
The storage efficiency is the occupancy ratio of the luggage installation area with respect to the warehouse area, and is the plane utilization efficiency in FIG. 8, and is represented by the area ratio between the luggage installation plane and the luggage installation plane area. When the storage efficiency is compared between the efficiency Ep for the conventional pallet rack shown in FIG. 8A and the efficiency Es for the shuttle rack shown in FIG. 8B, Ep <Es.
The workability indicates the work efficiency evaluated by the flow line of the carry-in / out work by the forklift shown by the dotted line in FIG. 8, that is, the length of the movement curve. When the same pallet storage operation is performed in two different storage devices, the storage device having a shorter forklift flow line is evaluated as having better workability. Comparing the conventional shuttle rack and forklift with the twin shuttle rack system of the present invention, the present invention that can carry two pallets at a time reduces the length of the flow line by half, so the workability is greatly improved. To do.

  As shown in FIG. 8, the storage efficiency and workability are greatly improved by the shuttle rack as compared with the conventional pallet rack. The present invention is intended to further improve these. The central technology is a technology for transporting and storing two pallets at the same time in a very close state with an interval of 30 to 70 mm between the current packages shown in FIG. Even at present, it was possible to carry out two pallets from the truck in the above state. In addition, it was possible to transport two pallets at intervals of 30 to 70 mm using a four-claw forklift. However, there was no shuttle rack that could be loaded in this state. There was no choice but to take down two pallets and store them one by one.

The present invention provides a twin shuttle rack system that can store two pallets as they are close to each other by a forklift.
Furthermore, loading and unloading workability has been further improved by mounting the above-mentioned twin shuttle racks on truck and container loading platforms.

1, 1a Rack 2a, 2b Shuttle 2c, 2d Wheel 2e, 2f Upper surface 2g, 2h Lifting device 3 Rail block 3a Rail block (center)
3b Rail block (left)
3c Rail block (right)
3d Upper surface 3e Lower surface 3f, 3g, 3j, 3k Tread surface 3h, 3i, 3m, 3n Protrusion 4 Horizontal member 5a, 5b Pallet 5c Opening 6 Luggage 7 Forklift 7a Fork 8 Truck 8a Loading platform 10 Twin shuttle rack system

Claims (6)

Two shuttles to place pallets and run in the front-rear direction;
A rack having three rail blocks for the wheels of the two shuttles to travel;
One forklift having a fork for transporting the pallets in a state where two pallets are arranged in the left-right direction and placing the pallet in the above-described state at a predetermined position for loading and unloading the rail block;
A twin shuttle rack system comprising:
In the rack, the rail block is disposed at both the left and right end portions and the central portion with respect to the traveling direction of the shuttle, and each rail block is supported on the lower surface of the rail block by a plurality of horizontal members orthogonal to the rail block. Has been
The cross section of the rail block perpendicular to the direction of travel is substantially rectangular, and the rail blocks arranged on both the left and right sides protrude below the inner surface facing each other as a tread surface on which the wheel of the shuttle travels. The rail block in the center has protrusions that serve as treads on which the wheel of the shuttle travels below the left and right sides.
Each of the rail blocks further has a horizontal receiving surface for placing a pallet on each upper surface, and the shuttle is arranged between the rail blocks by arranging a wheel on the protruding portion of the rail block. It is installed in parallel, and the upper surface of the shuttle is configured to be lower than the upper surface of the rail block, and further includes a device for raising and lowering the pallet placed on the upper surface of the rail block.
A twin shuttle rack system.   There is no support by the horizontal member on the lower surface of the front end of the rail block at the predetermined position for loading / unloading, and the rail block is over the horizontal member disposed at the foremost part of the horizontal member. The twin shuttle rack system according to claim 1, wherein the twin shuttle rack system has a hung configuration.   The tip of the rail block at the predetermined position for loading and unloading is supported by the horizontal member on the lower surface, and each rail block height dimension is larger than the rail block height dimension of claim 2. The twin shuttle rack system according to claim 1.   4. The twin shuttle according to claim 1, wherein a plurality of sets of the three rail blocks and the plurality of horizontal support members are arranged in the left-right direction and the up-down direction in the rack. 5. Rack system.   4. A truck comprising the shuttle and the rack according to claim 1 disposed on a loading platform. 4. A container comprising the shuttle and the rack according to claim 1 disposed on a loading platform.

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