JP3685480B2 - Handling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cargo handling apparatus for carrying a cart with casters into and out of a three-dimensional automatic warehouse, for example.
[0002]
[Prior art]
Conventionally, as an example of this type of cargo handling apparatus, there is one shown in FIGS. This is because a stage 2 is formed in the vicinity of a storage shelf 1 in which a large number of storage spaces 1 a are formed by vertical rails 7 and shelf support members 8, and a carriage 4 with casters 3 is transferred to a pallet P on the stage 2. The cart 4 and the pallet P are bound by the band 5, the slide fork 6 of the stacker crane is inserted into the fork insertion port 2a of the stage 2, and the pallet P is lifted up by lifting the slide fork 6. Thus, the pallet P and the cart 4 with casters 3 are integrally lifted and carried into the predetermined storage space 1a. When the cart 4 with casters 3 is carried out, the procedure reverse to the above is performed. Just do it.
[0003]
[Problems to be solved by the invention]
In the above conventional configuration, the pallet P corresponding to the storage space 1a is used to transfer the cart 4 with casters 3 thereon, and a transfer device such as a forklift is required for the transfer. And the transfer work is troublesome. In addition, a band 5 is necessary to bind the cart 4 with casters 3 transferred onto the pallet P, and the number of parts increases, and the binding work takes time and effort. Furthermore, since it is necessary to increase the height H of the storage space 1a by the height t of the pallet P, the storage shelf 1 is increased in size and the manufacturing cost is high.
[0004]
The present invention has been made in view of the above-described conventional drawbacks, and an object of the present invention is to provide a cargo handling apparatus that can easily move a cart with casters so that it does not move unexpectedly and that requires a small storage space.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a cart with a caster is transferred to a tray on a stage, and the tray and the cart with a caster are lifted up by lifting the tray. A loading / unloading device that is loaded into a storage space or carried out in the reverse order, wherein a recess having substantially the same depth as the tray for inserting the tray is formed on the stage, and the tray Are provided with an insertion hole for inserting the caster and a receiving base for receiving and supporting the lower surface of the carriage, and the bottom surface of the recess has a height substantially equal to the height of the tray to be inserted into the insertion hole. A convex part is projected, and the tray is lifted while the caster is in contact with the upper surface of the convex part, so that the carriage is lifted by bringing the receiving base into contact with the lower surface of the carriage. It is characterized in that the.
[0006]
According to the above configuration, when the tray is inserted into the recess of the stage, the upper surface of the tray and the upper surface of the stage are flush with each other, so that the cart with casters can be easily transferred from the stage to the tray. The conventional transfer device is unnecessary for the transfer, and the transfer work can be simplified by the amount that is not required.
[0007]
Further , according to the above configuration, the pedestal provided on the tray can be placed on the lower surface of the carriage simply by lifting the tray in a state where the caster is in contact with the upper surface of the convex portion fitted into the insertion hole provided on the tray. It can be lifted up easily so that the cart with casters does not move unexpectedly, and the equivalent of the conventional binding band is unnecessary, and the number of parts is reduced by the amount that is no longer necessary. In addition, by lifting the tray, the lower part of the caster enters the insertion hole of the tray, and the height of the carriage is reduced by the width of the insertion, so the storage space is reduced by the lower amount. And production costs can be reduced.
[0008]
According to a second aspect of the present invention, in the first aspect of the present invention, the tray has a pair of front and rear horizontal beams and a pair of left and right vertical beams framed in a substantially rectangular shape in plan view. A plurality of support girders are laid in a lattice shape between the cross beams, and among the spaces surrounded by the cross beams and the vertical girders and the plurality of support girders, the four corners of the tray are the insertion holes. It is characterized by being said.
[0009]
According to the above configuration, a lightweight and rigid tray can be formed by a pair of front and rear horizontal beams and a pair of left and right vertical beams arranged in a substantially rectangular shape in plan view and a plurality of support beams installed in a lattice shape. In addition, the insertion holes can be formed at the four corners of the tray only by performing the above-described framework and lattice-like construction, and the manufacturing cost is lower than the case where each insertion hole is specifically formed in the tray.
[0010]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the cradle is formed in a vertically long rectangular block shape and is arranged in the center on the tray along the front-rear direction. Yes.
[0011]
According to the above configuration, since the cradle is disposed along the front-rear direction in the center of the tray, the cart with casters can be smoothly transferred onto the tray without being obstructed by the cradle. Since the cradle is formed in the shape of a vertically long rectangular block, the cradle can stably support the center of the lower surface of the carriage over almost the entire length in the front-rear direction.
[0012]
According to a fourth aspect of the present invention, in the third aspect of the present invention, a concave step portion for receiving a fork insertion frame projecting from a bottom surface of the carriage is formed at the rear portion of the pedestal. It is said.
[0013]
According to the above configuration, even when a cart with a fork insertion frame projecting thereon is transferred onto the tray, the frame does not collide with the cradle by the recessed step formed at the rear part of the cradle. Therefore, the carriage can be smoothly transferred onto the tray.
[0014]
According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, a concave groove for receiving a stay projecting from a bottom central portion of the carriage is formed in the central portion of the upper surface of the cradle. It is a feature.
[0015]
According to the above configuration, even when the carriage with the stay protruding is transferred onto the tray, the stay is prevented from colliding with the pedestal by the concave groove formed in the central portion of the upper surface of the cradle. Can be smoothly transferred onto the tray.
[0016]
The invention according to claim 6 is characterized in that, in the invention according to any one of claims 1 to 5, a pair of left and right cart guide plates are erected on both side edges of the tray.
[0017]
According to the above configuration, the carriage can be easily transferred onto the tray simply by pushing the carriage between the carriage guide plates.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 show a cargo handling apparatus according to an embodiment of the present invention, which has a tray 10 on which a cart 4 with casters 3 is placed, and in the vicinity of a storage shelf 1 (see FIG. 7). A recess 11 is formed for inserting the tray 10 into the stage 2. Components other than those described above are denoted by the same reference numerals as those shown in FIGS. 8 to 10 and description thereof is omitted.
[0019]
As shown in FIG. 1, the concave portion 11 is formed in a rectangular shape in plan view that is slightly larger than the tray 10, and its depth T1 is set to be substantially the same as the height T2 of the tray 10. As shown in FIG. 4, when the tray 10 is inserted into the recess 11, the upper surface of the tray 10 and the upper surface of the stage 2 are flush with each other, so that the cart 4 with casters 3 can be easily moved from the stage 2 to the tray 10. The conventional transfer device is unnecessary for the transfer, and the transfer work can be simplified by the amount that is no longer necessary.
[0020]
As shown in FIGS. 1 and 2, the tray 10 has a pair of front and rear horizontal beams 10A and 10B and a pair of left and right vertical beams 10C and 10D that are framed in a generally rectangular shape in plan view. A plurality of support girders 12 are laid in a lattice shape between 10C and 10D and between both cross beams 10A and 10B, and are surrounded by the cross beams 10A and 10B and both vertical girders 10C and 10D and the plurality of support girders 12. Each of the spaces 13a to 13f is formed so as to be fitted to a plurality of rectangular projections 14 in plan view having substantially the same height T1 as the stage 2 protruding from the bottom surface of the recess 11, and each of the spaces 13a to 13f Among them, the four corners of the tray are insertion holes 13a, 13c, 13d, and 13f for inserting the casters 3.
[0021]
According to the above-described configuration, a plurality of frames arranged in a grid with a pair of front and rear horizontal beams 10A and 10B and vertical beams 10C and 10D which are framed in a substantially square shape in plan view along the front and rear directions a and b and the left and right directions c and d. The tray 10 having a light weight and a rigid structure can be formed by the support girders 12 and the insertion holes 13a, 13c, 13d, and 13f are formed at the four corners of the tray 10 only by laying the frame and the lattice. Compared with the case where the insertion holes 13a, 13c, 13d, and 13f are specially formed in the tray 10, the manufacturing cost is low. Further, by making the diameters of the insertion holes 13 a, 13 c, 13 d, and 13 f about twice or more than the diameter of the casters 3, it is possible to deal with various carts 4 having different intervals between the casters 3.
[0022]
As shown in FIGS. 1 to 3 and 5, a vertically long rectangular block box-shaped pedestal 15 is provided in the center of the tray 10 along the front-rear directions a and b, and the height T3 of the pedestal 15 is a cart. 4 is set slightly smaller than the height T4 up to the bottom surface. Reference numeral 16 denotes an anti-slip material made of an elastic material such as rubber adhered to the upper surface of the cradle 15.
[0023]
According to the above configuration, the tray 10 is in a state where the caster 3 is in contact with the upper surface of the convex portion 14 fitted in each of the insertion holes 13a, 13c, 13d, and 13f provided in the tray 10 (see FIGS. 3 and 4). Is simply lifted by the slide fork 6, and the carriage 15 with the caster 3 can be lifted up easily without causing the carriage 4 with the caster 3 to move unexpectedly by bringing the receiving base 15 provided on the tray 10 into contact with the lower surface of the carriage 4. (Refer to FIG. 6) The thing corresponding to the conventional binding band 5 (refer to FIG. 9) is unnecessary, the number of parts can be reduced by the unnecessary amount, and the tray 10 is lifted up. As a result, the lower portion of the caster 3 enters the insertion holes 13a, 13c, 13d, and 13f of the tray 10, and the height of the carriage 4 is lowered by the width α of the insertion. It is possible to reduce the manufacturing cost by reducing the height H of the storage space 1a (see FIG. 7). Moreover, since the cradle 15 is arranged in the center of the tray 10 along the front and rear directions a and b, the cart 4 with casters 3 can be smoothly transferred onto the tray 10 without being obstructed by the cradle 15. In addition, since the cradle 15 is formed in a vertically long rectangular block shape, the cradle 15 can stably support the center of the lower surface of the carriage 4 over almost the entire length in the front-rear direction.
[0024]
As shown in FIGS. 1, 5, and 6, a recessed step portion 18 is formed at the rear portion of the cradle 15, and the carriage 4 on which the fork insertion frame 17 projects is transferred onto the tray 10. Even in such a case, the frame 17 is prevented from colliding with the cradle 15 by the concave step portion 18, so that the carriage 4 can be smoothly transferred onto the tray 10.
[0025]
As shown in FIGS. 5 and 6, a concave groove 19 is formed in the center of the upper surface of the cradle 15 so as to divide the cradle 15 into two, and the stay 20 is formed in the center of the bottom surface in the front-rear directions a and b. Even when the cart 4 protruding along the tray 10 is transferred onto the tray 10, the stay 20 does not collide with the receiving table 15 due to the concave groove 19, so that the cart 4 is smoothly transferred onto the tray 10. can do.
[0026]
As shown in FIGS. 1 and 6, a pair of left and right cart guide plates 21 are erected on both side edges of the tray 10, and the cart 4 is inserted into the tray by simply pushing the cart 4 between the cart guide plates 21. 10 can be easily transferred. Reference numeral 22 denotes an anti-slip material made of an elastic material such as rubber adhered to the inner surface of each carriage guide plate 21.
[0027]
The handling procedure will be described. As shown in FIGS. 3 to 5, with the tray 10 inserted into the recess 11 of the stage 2 formed in the vicinity of the storage shelf 1, the carriage 4 is transferred onto the tray 10. The caster 3 is brought into contact with the upper surface of the convex portion 14 fitted into each of the insertion holes 13a, 13c, 13d, and 13f. Next, the slide fork 6 of the stacker crane is inserted into the fork insertion port 2a of the stage 2, and the tray 10 is lifted up by pulling up the slide fork 6 (see FIG. 6). What is necessary is just to lift the trolley | bogie 4 with 3 integrally, and to carry in the predetermined | prescribed storage space 1a of the storage shelf 1 (refer FIG. 7). Moreover, what is necessary is just to perform in the reverse procedure to the above, when carrying out the cart 4 with the caster 3. FIG.
[0028]
【The invention's effect】
According to the first aspect of the present invention, when the tray is inserted into the recess of the stage, the upper surface of the tray and the upper surface of the stage are flush with each other, so that the cart with casters can be easily transferred from the stage to the tray. The conventional transfer device is unnecessary for the transfer, and the transfer operation can be simplified by the amount that is not required.
[0029]
According to the first aspect of the present invention, the cradle provided on the tray is simply lifted up while the caster is in contact with the upper surface of the convex portion fitted into the insertion hole provided in the tray. It can be lifted easily by making it touch the lower surface of the cart so that the cart with casters does not move unexpectedly, and there is no need for a conventional binding band. The number of points can be reduced, and by lifting the tray, the lower part of the caster enters the insertion hole of the tray, and the height of the carriage is reduced by the width of the insertion. The storage space can be reduced and the production cost can be reduced.
[0030]
According to the second aspect of the present invention, a lightweight and rigid tray is formed by a pair of front and rear cross beams and a pair of left and right vertical beams arranged in a generally rectangular shape in plan view and a plurality of support beams installed in a lattice shape. In addition, it is possible to form insertion holes at the four corners of the tray simply by performing the above-described framework and grid-like construction, and the production cost is lower than when each insertion hole is specially formed in the tray. It is cheap.
[0031]
According to the invention described in claim 3 , since the cradle is arranged in the center of the tray along the front-rear direction, the cart with casters can be smoothly transferred onto the tray without being obstructed by the cradle. In addition, since the cradle is formed in a vertically long rectangular block shape, the cradle can stably support the center of the lower surface of the carriage over almost the entire length in the front-rear direction.
[0032]
According to the fourth aspect of the present invention, even when a cart with a fork insertion frame projecting is transferred onto the tray, the frame collides with the cradle due to the recessed step formed in the rear part of the cradle. Therefore, the carriage can be smoothly transferred onto the tray.
[0033]
According to the fifth aspect of the present invention, even when the carriage with the stay projecting is transferred onto the tray, the stay does not collide with the cradle due to the concave groove formed in the center of the upper surface of the cradle. Therefore, the carriage can be smoothly transferred onto the tray.
[0034]
According to the sixth aspect of the present invention, the carriage can be easily transferred onto the tray simply by pushing the carriage between the carriage guide plates.
[Brief description of the drawings]
FIG. 1 is a perspective view of a cargo handling apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view of the same.
3 is an AA arrow view of FIG.
4 is a view taken along arrow BB in FIG. 3;
FIG. 5 is a view taken along the line CC in FIG. 3;
FIG. 6 is a cross-sectional view of the lifted up state.
FIG. 7 is a schematic front view showing the storage state.
FIG. 8 is a front view showing a conventional example.
FIG. 9 is a side view with the same part cut away.
FIG. 10 is a schematic front view showing the storage state.
[Explanation of symbols]
1a Storage space 2 Stage 3 Caster 4 Cart 10 Tray 10A, 10B Horizontal beam 10C, 10D Vertical beam 11 Recess 12 Support beam 13a Space (insertion hole)
13b space 13c space (insertion hole)
13d space (insertion hole)
13e space 13f space (insertion hole)
14 Convex part 15 Receiving base 17 Fork insertion frame 18 Concave step part 19 Concave groove 20 Stay 21 Carriage guide plate T1 Concave depth T2 Tray height

Claims (6)

A cart with casters is transferred to a tray on a stage, and the tray is lifted up so that the tray and the cart with casters can be lifted and loaded into a predetermined storage space or vice versa. A concave portion having a depth substantially the same as the height of the tray for inserting the tray is formed on the stage, and an insertion hole for inserting the caster into the tray, A pedestal for receiving and supporting the lower surface, and a convex portion having a height substantially the same as the height of the tray to be fitted into the insertion hole is projected on the bottom surface of the concave portion, and the upper surface of the convex portion is A cargo handling apparatus , wherein the tray is lifted up in a state where the casters are in contact with each other so that the carriage is lifted by bringing the receiving table into contact with the lower surface of the cart . The tray has a pair of front and rear horizontal beams and a pair of left and right vertical beams framed in a generally rectangular shape in plan view, and a plurality of support beams are installed in a lattice pattern between the vertical beams and between the horizontal beams. 2. The cargo handling device according to claim 1, wherein among the spaces surrounded by the horizontal and vertical beams and a plurality of support beams, the four corners of the tray are used as the insertion holes. . The cargo handling apparatus according to claim 1 or 2 , wherein the cradle is formed in a vertically long rectangular block shape and is arranged along the front-rear direction at the center of the tray. 4. The cargo handling device according to claim 3, wherein a concave step portion for receiving a fork insertion frame projecting from a bottom surface of the carriage is formed at a rear portion of the cradle. The cargo handling device according to claim 3 or 4, wherein a concave groove for receiving a stay protruding from a central portion of the bottom surface of the carriage is formed in a central portion of the upper surface of the cradle. The cargo handling device according to any one of claims 1 to 5 , wherein a pair of left and right carriage guide plates are provided upright on both side edges of the tray.

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