JPH0520723Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a shelving facility using rollers that is used to store loads directly or via pallets and to take them out as needed.

BACKGROUND ART Conventionally, this type of shelving equipment, as seen in, for example, Japanese Utility Model Publication No. 18750/1983, is a system in which a wheel rail having a large number of wheels is mounted on a frame and the conveyance (sliding) direction of the wheel rail is inclined. A structure is provided in which they are arranged in multiple upper and lower stages. According to this conventional structure, the load thrown into the upper part of the slope slides on the wheel and is received by a stopper provided at the lower end, and the loads thrown in sequentially are received by the previous load and stored. It turns out. The loads stored in this manner are taken out from the lower part of the slope as needed, and the traces left by the removal are filled in by the sliding of the rear loads. In this conventional example, loading and unloading of loads is carried out by a receiving operation, but in the case of a large shelf that handles large loads, loading and unloading of loads is carried out using, for example, a forklift vehicle.

According to the conventional method described above, the load is moved by sliding using the free rotation of the wheels, so if the free rotation is not performed smoothly or there is variation in the load, the sliding may occur. This means that it will not be carried out reliably, and it will be less reliable. Furthermore, in view of frictional resistance, for example, some pallets may not be usable depending on their material. For these problems, it is possible to set a sufficient angle of inclination, but if the angle of inclination is large, the sliding speed will be high and not constant, and the impact will be large when the load is caught by the stopper. This results in poor stability. Moreover, the dead space on the slope will be expanded, resulting in inefficient storage.

To deal with this, as seen in U.S. Pat. No. 3,545,596, a pair of left and right roller conveyors each having rollers supported by channel members is provided, and a driving chain is provided between both roller conveyors. Configuration is provided. Here, the drive chain is constructed by providing springs between adjacent link pins and similarly providing vertically movable pads between adjacent link pins and biasing them upwardly by the springs.

According to this conventional structure, when there is no load, the pad is moved upward by the biasing force of the spring, and its upper part (upper surface) is positioned above the conveying surfaces of both roller conveyors. When a load is placed between both roller conveyors, a plurality of pads are pressed against the bottom surface of the load by the upward biasing force of the spring, and the load is transported by the moving force of the drive chain. is going on.

Problems to be Solved by the Invention According to the conventional structure of the above-mentioned US Pat. No. 3,545,596, one or more of the pads in the group of pads pressed against the lower surface of the center of the load could not move up and down smoothly. In this case, the loading position of the load becomes tilted, and the load cannot be transported stably.
In particular, when handling loads via pallets, it is not possible to stably transport so-called European-type pallets, which have three rows of legs on the underside. Further, the drive chain has a complicated structure and cannot be easily manufactured or installed.

The purpose of the present invention is to provide a shelving facility using rollers that can stably transport pallets of various types, easily manufacture multiple roller conveyors, and allow a compact arrangement of drive devices. It is in the point of doing.

Means for Solving the Problems In order to achieve the above object, the roller-using shelving equipment of the present invention has a large number of idle rollers arranged between a pair of left and right main body frames on a base frame that constitutes a shelf frame. The configured roller conveyors are arranged in three rows with the conveying direction being horizontal, and a drive device that can be connected to and separated from the central roller conveyor is connected between the two main body frames constituting the central roller conveyor. It is arranged between the idling roller group and the base frame.

According to the configuration of the present invention, the three rows of roller conveyors can be easily manufactured because they have the same configuration, and the drive device can be arranged compactly within the central roller conveyor. During use, the pallets fed onto the roller conveyor group are transported horizontally by the driving force of the central roller conveyor connected to the drive device. Further, when conveying European-type pallets, such pallets can be stably conveyed by placing the central leg on the central roller conveyor.

Embodiment An embodiment of the present invention will be described below based on the drawings.

1 is a shelf frame, which includes a plurality of left and right front columns 2, a plurality of left and right rear columns 3, a front cross member 4 that connects the front columns 2, and a rear cross member 5 that connects the rear columns 3.
It is composed of a front and rear member 6 that connects the front and rear columns of the front column 2 and rear column 3, and the like. Three rows of roller conveyors 7, 8, 9 each having a large number of idle rollers are installed in a plurality of partitions in the left and right direction formed between the columns 2 and 3 of this shelf frame 1, with the conveyance direction being horizontal. Each of them is arranged in multiple levels above and below. Of these roller conveyors 7, 8, and 9, the central roller conveyor 7 is provided with a drive device 10 that can be freely connected and separated.

That is, the central roller conveyor 7 has a left and right pair of channel-shaped main body frames 11A, 11B, and these main body frames 11A, 11B are provided with bolts, etc. on a base frame 12 provided between the front columns 2 and between the rear columns 3. It is attached via the fixture 13 of. A rail bracket 15 is attached to the inner surface of the lower part of one main body frame 11A via bolts 14, and a pair of upper and lower guide rails 16 and 17 are arranged on this rail bracket 15 in the length direction of the frame. be.

Further, on the inner surface of the upper part of one main body frame 11A, a support frame 18 made of resin is attached to the main body frame 11A.
A plurality of support frames 1 are arranged in the length direction of A, and these support frames 1
8 is fixed by tightening a bolt 20 inserted from the inside into a mounting hole 19 formed in the intermediate portion with a nut 21 applied to the outer surface of the main body frame 11A. The support frame 18 is case-shaped and includes a base plate portion 22 in which the mounting hole 19 is formed.
, a pair of front and rear cover plate parts 23 that are connected inward from the inner surface of the lower half of the base plate part 22 , and a connecting plate part 2 that is provided between the lower ends of these cover plate parts 23 .
4, and a through hole 25 is formed above the mounting hole 19 of the substrate portion 24.
A locking groove 26 with an open top is formed in the upper corner portion of the other main body frame 11B.

An idling roller 28 made of resin is rotatably provided between the main body frames 11A and 11B via a roller shaft 27. That is, the roller shaft 27 can be installed by inserting one end of the roller shaft 27, which is inserted so as to rotate freely relative to the idle roller 28, into the through hole 25 from inside, and then dropping the other end into the locking groove 26 from above. , so that the idle roller 28 can freely rotate around the roller axis 29.

A support shaft 30 along the roller axis 29 is attached to the support frame 18 so as to be vertically swingable. That is, a bearing hole 31 is formed at the lower end of the base plate part 22, and the inner end of the support shaft 30 is fitted into the bearing hole 31, so that it can freely swing up and down. and the cover plate portion 23
The L-shaped plate part 32 made of resin is inserted between the free ends of the L-shaped plate part 32, and the outer end of the support shaft 30 is fitted into the vertical recess 33 formed in the vertical plate of the L-shaped plate part 32. The vertical swing range of the shaft 30 is regulated. A sprocket 34, which is an example of a passive wheel, is rotatably attached to the support shaft 30, and a transmission roller 35 is fitted onto the boss portion of the sprocket 34, so that both 34 and 35 can rotate together. The transmission roller 35 is made of urethane rubber, and its outer periphery can freely come into contact with and separate from the lower outer periphery of the idle roller 28. An air cylinder device 36 for making contact and separation is interposed between a cylinder rubber receiver 37 attached to the outer end of the support shaft 30 and the horizontal plate of the L-shaped plate portion 32.

A chain 38, which is a common driving body interlocked with each sprocket 34, is stretched between a drive sprocket 39 and a driven sprocket 40 via a guide sprocket 41, etc., and operatively connects the drive sprocket 39 to a motor 42. are doing. The above-mentioned drive device 10 is constituted by the above 30 to 42.

The roller conveyors 8, 9 on both sides are formed by channel-shaped main body frames 45A, 45B, 46A, 46B.
There are a pair of left and right main frames 45A, 4.
5B, 46A, 46B are fixing tools 47A, 47B, 48A, 48 such as bolts on the base frame 12.
It is attached via B. Each main body frame 45
Upper corner portions of A, 45B, 46A, and 46B have locking grooves 49A, 49B, 50A, and 50 that open at the top.
B is formed.

And corresponding main body frames 45A, 45B,
Idle rollers 53 and 54 made of resin are rotatably provided between 46A and 46B via roller shafts 51 and 52. That is, the roller shafts 51, 52 can be installed by dropping both ends of the roller shafts 51, 52, which are inserted into the idler rollers 53, 54 so as to be relatively rotatable, into the locking grooves 49A, 49B, 50A, 50B from above. , so that the idle rollers 53 and 54 can freely rotate around the roller axes 55 and 56.

As mentioned above, groups of idle rollers 28, 53, and 54 of each roller conveyor 7, 8, and 9 are connected to the main body frame 11.
A, 11B, 45A, 45B, 46A, 46B are arranged at set pitches P, so that the conveyance path 57
form. Reference numeral 58 denotes objects to be conveyed, which are handled via a pallet 59. The pallet 59 is of a European type, consisting of a receiving plate portion 59a and three rows of leg members 59b, 59c, and 59d. A stopper 60 fixed to the shelf frame 1 side is provided at the end of the conveyance path 57.

Idle roller 2 on the central roller conveyor 7
The 8th group is, for example, as shown in FIG.
In the example, there are 8 groups A, B, C, D, E, F,
G and H are arranged, and a drive device 10 is provided for each group.
can be connected and separated at will. That is, each group is provided with a supply/discharge hose 61 to which the air cylinder device 36 is connected in series, and these supply/discharge hoses 61
are connected to the air supply device 63 via the solenoid valves 62, respectively.
It is constructed so that it can be freely connected and separated to a common air supply hose 64 from the air supply hose 64. 65 is a regulator, and 66 is a silencer.

At the downstream end of each group A, B, C...H, there is a photoelectronic switch 6, which is an example of a stock detector.
7 is provided. Here, in the two groups adjacent in the transport direction 68, when the photoelectronic switch 67 of the upstream group is in a detecting operation and the photoelectronic switch 67 of the downstream group is not detecting, the drive devices 10 of both groups are simultaneously in continuous operation. Air supply hose 6
4 and the supply/discharge hose 61]. When the photoelectronic switches 67 of both groups are in the detecting mode or non-detecting mode at the same time, the drive devices 10 in both groups are simultaneously in the separating mode (the air supply hose 6
4 and the supply/discharge hose 61]. For this purpose, each solenoid valve 62 is integrated into a respective control unit 69. Further, only the most downstream group A is configured so that the drive device 10 separates and moves when the photoelectronic switch 67 detects the movement.

Next, the conveyance work in the above embodiment will be explained.
In FIGS. 3 and 4, the solenoid valve 62 is switched to connect the air supply hose 64 to the supply/discharge hose 61, the support shaft 30 is swung upward by the expansion of the air cylinder device 36, and the transmission roller 35 is The idling roller 28 is pressed from below. At this time, the motor 4
2, the chain 38 is constantly driven, and therefore the sprocket 3 engaged with the chain 38
4 rotates around a support shaft 30. Further, since the transmission roller 35 is in contact with the lower part of the outer circumference of the idler roller 28, the group of idler rollers 28 is forcibly rotated, and the pallet 59 can be conveyed on the conveyance path 57. At this time, the group of idling rollers 28 applies a conveying force to the pallet 59 via the central leg member 59c, and the leg members 59b, 5 on both sides
9d is supported and guided by idle rollers 53 and 54 of roller conveyors 8 and 9 on both sides.

In addition, in order to prevent the pallet 59 from shifting laterally, the shelf frame 1 or the main frame 45A, 4
6B is provided with a side guide (not shown).

The roller conveyors 7, 8, and 9 groups basically transport the pallet (object to be transported) 59 as described above, but in reality, the transport control is based on the detection or non-detection of the photoelectronic switch 67. It will be done. That is, when the pallet 59 is unloaded onto the upstream group H by the forklift vehicle 70 while the conveyance path 57 is empty, the photoelectronic switch 67 of group H operates to detect, but the photoelectronic switch 67 of group G does not detect. Therefore, the control unit 6
9 and the solenoid valve 62, the idle rollers 28 of both groups H and G are forcibly rotated, thereby conveying the pallet 59 from group H to group G. When pallet 59 enters group G,
Since the photoelectronic switch 67 of group G is detected but not detected in group F, groups G and F are connected and the pallet 59 is conveyed from group G to group F. The pallets 59 thus conveyed sequentially to the downstream side come into contact with a stopper 60, stop, and are stored in group A. When this pallet 59 is detected by the photoelectronic switch 67, group A is separated and moved.

The second pallet 59 is also transported in the same way,
Group B comes into contact with pallet 59 of group A.
will be stored in At this time, group B is detected and moved, but since group A is also detected and moved, this group B will also be separated.

In such an operation, for example, as shown in FIG. 5, it is assumed that the pallets 59 are stored in all groups A to H and all are moved separately. In this state, when the pallet 59 of group A is taken out by the forklift vehicle 70 as shown in FIG. As shown in Figure 7, the palette 59 of group B is transferred to group A.
transport to. Then, since the photoelectronic switch 67 of group B becomes non-detecting, groups B and C
The pallets 59 of group C are connected and moved to convey pallets 59 of group C to group B as shown in FIG. By repeating this kind of action, Figures 9 to 1
As shown in FIG. 3, pallets 59 can be fed sequentially.

For example, when the photoelectronic switch 67 of group F is in a non-detecting state as shown in FIG. 11, the pallet 5 of group A is
9 is removed, sequential feeding is performed at two locations in the direction of the conveyance path 57, as shown in FIGS. 15 and 16. Sequential feeding of three or more locations is also performed in the same manner.

In the above embodiment, a European-type pallet 59 is used, but a normal flat pallet can also be transported in the same manner.

Effects of the invention According to the invention having the above configuration, the pallets supplied onto the roller conveyor group can be conveyed horizontally by the driving force of the central roller conveyor connected to the drive device, and the pallets can be transported horizontally from the downstream side. Can be densely stored upstream. In this way, the pallets can be forcibly moved within the shelves, and the pallets can always be moved reliably regardless of variations in load or the material of the pallets. Moreover, since the moving speed can be made constant, stable conveyance can be performed. Furthermore, it can be arranged horizontally, eliminating the conventional sloping dead space, and providing shelf equipment with high storage efficiency.

In particular, according to the present invention, when conveying a European-type pallet, the central leg is placed on the central roller conveyor, and the legs on both sides are placed on the roller conveyors on both sides. can be transported stably and reliably at all times. Furthermore, since the three rows of roller conveyors have the same configuration, they can be easily manufactured, and the drive device can be compactly disposed within the central roller conveyor.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a partially cutaway front view of the main part, and FIG. 4 is a partially cutaway side view of the same part. Figure 5~
FIG. 16 is a schematic side view showing the state of use. 1... Shelf frame, 7, 8, 9... Roller conveyor,
10... Drive device, 11A, 11B... Body frame, 12... Base frame, 16, 17... Guide rail, 18... Support frame, 19... Mounting hole, 2
5... Through hole, 26... Locking groove, 27... Roller shaft, 28... Idle roller, 29... Roller axis center,
30... Support shaft, 34... Sprocket, 35...
Transmission roller, 36...Air cylinder device, 38...
...Chain, 45A, 45B, 46A, 46B...
Main frame, 49A, 49B, 50A, 50B
...Latching groove, 51, 52...Roller shaft, 53, 5
4... Idle roller, 55, 56... Roller axis center,
57... Conveyance route, 59... Pallet, 59a...
...Receiving plate part, 59b, 59c, 59d... Leg member, 62... Solenoid valve, 67... Photoelectronic switch,
68...Conveyance direction.

Claims (1)

[Scope of utility model registration request] On the base frame constituting the shelf frame, three rows of roller conveyors, each consisting of a large number of idle rollers arranged between a pair of left and right main body frames, are arranged with the conveyance direction being horizontal. Among them, a roller use device characterized in that a drive device that can be connected to and separated from the central roller conveyor is disposed between both body frames constituting the central roller conveyor and between the idling roller group and the base frame. Shelving equipment.