JPS6141695Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shelf in a transport machine, and in particular, it is supported by four endless bodies installed in front, back, left and right on the transport side, and moves upward or downward while maintaining a horizontal state. The present invention relates to a device that transports articles and returns them in a vertical position on the return side where they return from the carry-out section to the carry-in section after being carried out.

When an article is transported vertically or in an inclined direction, for example, in an upward direction, as shown in FIGS. A loading shelf 3 is supported between the first and second endless bodies 1 and 2 so as to be horizontal on the transport side, and the goods W are placed in the lower loading section 4. is carried into the loading shelf 3 in a horizontal state, the endless bodies 1 and 2 are rotated in synchronization, the loading shelf 3 is raised while maintaining the horizontal state, and the endless bodies 3 are carried out at the upper unloading section 5. A conveyor is used.

In this case, the shelf 3 is formed by arranging a plurality of shelf members 7 in parallel between the chains 6 on both sides, and connects the front and rear ends of the chains 6 on both sides via connecting bars 8 and 9, respectively. It is supported by being attached to the first and second endless bodies 1 and 2 on both sides, but it is required to maintain a horizontal state without bending downward due to the load or own weight of the item W on the conveyance side. At the same time, it is required to be bent when carrying out the article W or on the return side when returning from the carry-out section 5 to the carry-in section 4.

For this reason, conventionally, the ends of the links constituting both sides 6 of the shelf 3 were brought into contact with each other, so that the shelf 3 was bent in only one direction.

However, in the case of this structure, if the chain 6 stretches due to use or if the shaft joints and edges of the links wear out, the chain 6 will bend downward under the load. In order to deal with link wear, it is necessary to periodically replace the links, place locking pins between the edges of the links, and periodically increase the diameter of the locking pins. This work was not easy.

This idea was created with these points in mind.
To provide a shelf that does not bend even if the chain stretches due to use.

Next, an embodiment of the present invention will be described based on FIGS. 3 to 6.

11 is a chain on both sides of the shelf, and this chain 11
is constructed by pivotally connecting substantially rectangular outer links 14, 15 and substantially triangular inner links 16, 17 at both ends of a pin 13 on which the roller 12 is pivoted, and the center upper part of each outer link 14, 15 A bush 18 for attaching a shelf member is fitted into the slot.

Then, connect the chain 11 to one of the outer links 1
5 on the inside, and both ends of a shelf board 19 as a shelf member are attached to each outer link 14, 15 of the chain 11 on both sides by bolts 20 and nuts 21 passing through the bush 18. At the same time, connecting bars 22 connect the front and rear ends of the chains 11 on both sides.
A mounting shelf 23 is formed by being pivoted to.

In the present invention, by providing a locking piece 24 on one of the chains 11 on both sides, for example, the outer links 14 and 15, the shelf 23 is formed to be bent only in one direction, and the chain 11 is The mounting shelf 23 is formed so as not to bend even if it stretches.

That is, the locking piece 24 is connected to the outer link 14,
Inward from the top of both ends of 15, that is, the inner link 1
6 and 17, each locking piece 2 is bent.
4 are brought into contact with each other, and the lower edges of the respective locking pieces 24 are brought into contact with the adjacent inner links 1.
6 and 17 are abutted and locked.

The shelf 23 thus formed is constructed by attaching both ends of the front and rear connecting bars 22 to the first and second endless bodies 1 and 2 shown in FIGS. , 2 are rotated synchronously, the vertical outer surfaces of the locking pieces 24 of the outer links 14 and 15 are in contact with each other on the conveyance side, so the loading shelf 23 is raised while maintaining a horizontal state. , when entering the return side from the carry-out section 5 and from the return side to the carry-in section 4.
When entering, the outer link 1 of the chain 11
4, 15 and the inner links 16, 17 are bent in the direction in which the respective locking pieces 24 are separated from each other around the pin 13, and the transition of the loading shelf 23 from the horizontal state to the vertical state and from the vertical state to the horizontal state is prevented. It is done smoothly.

Even when the chain 11 is stretched due to use, the lower edges of the locking pieces 24 of the outer links 14 and 15 abut and lock against the upper edges of the inner links 16 and 17 on the conveyance side. Therefore, the chain 11 does not bend downward, and the mounting shelf 23 also maintains a horizontal state.

FIG. 7 shows another embodiment of the present invention, in which a support piece 3 is inserted from the upper edge of the inner links 16, 17
1 is bent inward to form a support piece 31.
Lock the lower edge of the locking piece 24 with the locking piece 24.
The contact area is increased.

Although the locking pieces 24 are provided on the outer links 14 and 15 in each of the embodiments described above, the locking pieces 24 are not limited to this. The pieces 24 may also be directed outwardly.

Further, the shelf member is not limited to the shelf board 19, but rollers can also be used.

As described above, according to the present invention, locking pieces are provided at the tops of both ends of one of the outer and inner links constituting the both-side chains of the shelf, and the vertical outer surfaces of the locking pieces are brought into contact with each other. Because they are in contact with each other, the shelf can be bent in only one direction, and because the lower edge of the locking piece is abutted against the upper edge of the other link, it is difficult to Even if the chain is stretched, the chain will not bend and the shelf can be kept horizontally. Also, the locking piece receives the load from the chain at two locations: the vertical outer surface and the lower edge. , can support large loads, transport goods safely and reliably, and does not require any particular increase in the number of parts or assembly man-hours.
Since the locking piece is only formed on one of the outer link and the inner link, it can be manufactured at low cost.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the present invention, in which Figure 1 is a side view schematically showing a conveyor using the rack of the present invention, Figure 2 is a front view thereof, and Figure 2 is a front view thereof. Figure 3 is a plan view showing the main parts of the shelf of the present invention;
The figure is a partially sectional side view, FIGS. 5 and 6 are longitudinal sectional views, and FIG. 7 shows another embodiment of the present invention. FIG. 3 is a vertical cross-sectional view showing main parts. 11...Chain, 14,15...Outside link,
16, 17... Inner link, 19... Shelf board as a shelf member, 23... Mounting shelf, 24... Locking piece.

Claims (1)

[Scope of utility model registration request] In a structure in which a plurality of shelf members are arranged in parallel between chains on both sides, locking pieces are provided protruding from the top of both ends of one of the outer links and inner links constituting the chain toward the other link. A shelf for a transport machine, characterized in that the lower edge of the locking piece is abutted against and locked to the upper edge of the other link, and the vertical outer surfaces of the locking pieces are brought into contact with each other.