JPS6025322B2 - width adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transportation equipment for handling cargo and a width shifting device for transported objects in warehouse equipment.

For example, if you put a fork in a circular shape or a pipe by lowering it onto a shelf, or lifting it from the shelf and taking it out, take into consideration the precision of the movement position of the fork and use the fork or pipe when entering or leaving the warehouse. If the size of the receiver is larger, the transfer can be more secure between the fork and the shelf.

However, since storage and removal are carried out using a single type of fork with a fixed size, the above-mentioned items cannot be dripped, making it difficult to ensure reliable delivery.

The present invention regulates the dimensions of the fork that are effective for holding cargo at the time of storage, and reliably stores the cargo on a shelf wider than this dimension.
The purpose is to widen the dimensions of the forks that are effective for picking up loads at the time of unloading, and to receive the loads in a wider size.

An embodiment of the present invention will be described based on the respective drawings from FIG. 1 to FIG. 5. In FIG. This equipment is guided by a top rail 3, travels on wheels 4, and an elevating frame 5 moves up and down, and a fork 6 on the elevating frame 5 allows cargo to be taken in and taken out of a desired shelf 9.

As shown in FIG. 2, the round birch 7 placed on the shelf 9 tends to roll, so it is placed in a state where it is caught by the stoppers 8a and 8M as shown in FIG. The fork device expands and contracts in three stages and moves horizontally in the direction of the shelf 9.

The tip of this fork device, that is, the third stage fork 6
Stoppers 13a and 13b are attached to the shelf 9 with substantially the same dimensions as the stoppers 8a and 8b on the shelf 9. Inside the stoppers 13a, 13b, there is a pair of width adjusting link mechanisms 15a, 15b, respectively, as shown in
will be installed.

As shown in FIGS. 4 and 5, this link mechanism 15a has two L-shaped links 10, 12 and a connecting link 14 that connects them.

These two L-shaped links 10 and 12 are placed closer to the river stopper 13a with one side protruding upward from the surface of the fork 6, and the other L-shaped link 12 is placed closer to the L-shaped link 10 than the L-shaped link 10. It is placed near the center of the fork 6. Each of these L-shaped links 10, 12 is rotatably attached to the fork 6 at its corner portion by pins 16a, 16b. Each of these L-shaped links 10 and 12 is connected to a connecting link 1 at the tip of the other side of each L-shaped link 10 and 12.
4, they are rotatably connected. The length of this connecting link 14 is such that, as shown in FIG. The L-shaped link 12 is set to such an extent that when it falls down to the position shown in FIG. 4, the L-shaped link 12 can rise diagonally toward the tip of the stopper 13a.

The lowermost end of this L-shaped link 10 is connected to the fork 6 by a spring 11, as shown in FIGS. 4 and 5. The strength of this spring 11 is determined so that the force generated by stretching the L-shaped link 10 when it stands upright does not overcome the load of the round bar 7 transmitted to the spring 11 via each link 10, 12, 14. , furthermore, each link 10, 1 in the state shown in FIG.
It is set to such an extent that it can support and stop the free movement of 2. These configurations are also the same for the width adjustment link mechanism 15b. In this embodiment configured in this way, when transferring the round bar 7 from the shelf 9 to the fork 6, as shown in FIGS. 4 and 5,
The fork 6 is raised from below the shelf 9 and the round bar 7 is scooped up onto the fork 6.

At this time, while the fork 6 is being raised, the round bar 7 near the stoppers 8a and 8b hits the L-shaped link 12 as shown in FIG. When the fork 6 is further raised, the weight of the round bar 7 is applied to the L-shaped link 12, and the L-shaped link 12 collapses around the pin 16b toward the stoppers 13a and 13b. When this L-shaped link 12 falls down, the L-shaped link 10 rotates around the pin 16a to stand upright via the connecting link 14. While rising up in this way, the L-shaped link 10 pushes the round bar 7 toward the center of the fork 6, eliminating the gap between the round bars 4 and lifting the fork 6.
gather in the center of In this way, even if an error occurs in the position of the fork 6, the round bar 7 can be reliably lowered onto the shelf or other carrying means on which the round bar 7 is to be lowered next.

Furthermore, since there is no gap between the round bars 7, there is no problem of the round bars 7 colliding with each other during transportation. On the other hand, after the round bar 7 is lowered from the fork 6 to another location, the weight of the round bar 7 that had been applied to the L-shaped link 12 disappears, so that the tension of the spring 11 that has been stretched as shown in FIG. Therefore, the L-shaped link 10 is centered around the pin 16a and the stopper 13a
, 13b, and at the same time, the L-shaped link 12, which is connected to the L-shaped link 10, rises and is held in the state shown in FIG.

In this state, the size for receiving the round bar 7 onto the fork 6 can be increased without being restricted by the L-shaped link 101.

Therefore, the round bars 7 spread out on the shelf 9 can be reliably received onto the fork 6 and transferred. At this time, the L-shaped link 12 does not stand upright, but instead stands up in an oblique state that slopes downward toward the center of the fork 6, as shown in FIG. It can be used as a guide for rolling. As described above, according to the present invention, there is provided a device that can receive a load in a wide dimension, and at the time of unloading the load, can gather the load in a narrow dimension. At the same time, it is possible to automatically widen the load acceptance dimension or bring the load closer to a narrower dimension by using the load's own weight, which has the effect of providing a device that can receive and unload more reliably. be.

[Brief explanation of the drawing]

FIG. 1 is a front view of a stacker crane to which the present invention is applied;
2 is a side view of the stacker crane in FIG. 1, FIG. 3 is an enlarged view of the part indicated by arrow A in FIG. FIG. 6 is a state diagram of the width shifting link mechanism shown in the figure during width shifting. 6...Fork, 7...Round bar, 10,12
...L-shaped link, 11... Spring, 13a, 13
b...Stopper, 14...Connection link, 15a
, 15b... Width-aligning link mechanism. Goo drawing 2 drawing Gewo drawing Gumu drawing Ota drawing

Claims (1)

[Claims] 1. A mobile machine capable of horizontal movement and vertical movement for loading and unloading circular long materials into and out of shelves storing circular long materials, in which a cargo loading surface is provided on the fork of a fork device equipped on the mobile machine, In a width shifting device used to take the long material in and out of the shelf by moving the fork device toward the shelf and moving it up and down, stoppers are provided at both ends of the cargo loading surface in the direction of movement toward the shelf; It is located closer to the center of the load carrying surface than the stopper, and is attached to the fork so as to be rotatable in the fork moving direction about an axis arranged perpendicular to the fork moving direction, and its arm is attached to the load carrying surface. a first link that protrudes further upward and has a length that reaches the long material mounted on the rack; A second arm is attached to the fork so as to be rotatable in the direction of movement of the fork about an axis disposed on the fork as a rotation center, and has an arm that protrudes upward from the load carrying surface and has a length that reaches the long material mounted thereon. a spring that rotates the second link and the arm of the first link toward the stopper, and the weight of the elongated material in which the arm of the second link is mounted closer to the stopper than its center of rotation. When it rotates toward the stopper, this rotation causes the first
The first link and the second link are rotatable in the opposite direction so that the arm of the link rotates the elongated member toward the center of the load carrying surface against the force of the spring. A width adjustment device characterized by having a connecting link connected to the width adjustment device.