JP3352539B2 - Cargo handling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling method. Details
Ku relates handling method using a forklift having a push-pull device.

2. Description of the Related Art In recent years, when a cargo such as a paper bag, a plastic bag, a cardboard box or the like is distributed using a truck or a railway container, a lighter sheet pallet is often used as compared with a flat pallet made of a wooden or synthetic resin. ing. In this case, a dedicated push-pull forklift is required for loading and unloading the load on the sheet pallet.

There is no problem in preparing a push-pull forklift for manufacturers because of the large amount of products shipped, but preparing a dedicated push-pull forklift on the small-scale receiving side becomes economically disadvantageous. Therefore, it is demanded that a conventional forklift can use a sheet pallet.

[0004]

2. Description of the Related Art FIG. 9 shows an example of a conventional push-pull forklift, and FIG. 10 shows an example of the push-pull device. The push-pull forklift has a push-pull device 3 provided on a mast 2 as shown in FIG. As shown in FIG. 10, the push-pull device 3 includes a platen 5 fixed to a lower portion of a frame 4 attached to the mast 2 so as to be able to move up and down, and a link mechanism 6 having a base end supported by the frame 4 to be vertically movable. And a cylinder (not shown) that drives the link mechanism to expand and contract, and a face plate 7 provided at the tip of the link mechanism 6.

At the lower end of the face plate 7, grip plates 8, 9 for biting tabs of a sheet pallet are provided.
And the cylinder 1 for driving one grip plate 9
0 is provided. A pressing member 12 for pressing the sheet pallet onto the platen 5 is fixed to a base end of the link mechanism 6. Further, between the base end and the frame 4, a cylinder 13 that moves up and down the link mechanism 6 including the face plate 7 is provided.

When the load is carried by the push-pull forklift, first, as shown in FIG. 9, the tab of the sheet pallet on which the load 14 is loaded is gripped by the grip mechanism 11 with the link mechanism 6 extended, and then the link mechanism is moved. 6
To retreat the face plate 7 and lift the load together with the sheet pallet onto the platen 5. Thereby, the load can be carried.

When unloading the load, the gripping mechanism 11 is released to release the tabs of the sheet pallet, and then the cylinder 13 is raised and lowered to press the tabs of the sheet pallet with the pressing member 12, and then to extend the link mechanism 6. Accordingly, only the load 14 can be pushed out from the platen 5 while leaving the sheet pallet on the platen 5.

[0008]

In the above-mentioned conventional push-pull forklift, unlike the fork of a flat pallet-only forklift, the platen 5 is wide and made of metal, so that the weight is heavy and the weight of the whole apparatus is also large. The weight is high and the cost is high. For this reason, push-pull forklifts have not been widely used on the small cargo receiving side, and this is an obstacle to the progress of integrated palletization.

Specifically, when a push-pull attachment is attached to a currently used forklift, the weight of the attachment including the platen is large, so that the forklift has an insufficient load. Therefore, a new purchase from the forklift body is required. Even if the manufacturer on the shipping side is large-scale, the receiving side is subdivided, so a large number of push-pull forklifts are required, and the initial investment becomes large.

In view of the above-mentioned conventional problems, the present invention realizes a forklift having a sheet pallet push-pull device capable of loading and unloading with a sheet pallet using a conventional flat pallet forklift and a loading and unloading method using the same. The purpose is to:

[0011]

In a forklift of the present invention, a forklift having a fork for a normal flat pallet, a face plate having a grip mechanism for gripping a tab of a sheet pallet at a lower portion, and a mast of the forklift are provided. A frame detachably mounted on the finger bar provided, and a telescopic pantograph mechanism for supporting the face plate at the other end thereof and supporting the face plate at the other end to advance and retreat. made sheet pallets push-pull device to <br/> instrumentation clothes for, bearing a flat pallet by said fork, a flat path in this state
Cargo handling of sheet pallets with let instead of platen
Is performed .

[0012]

[0013]

A push-pull device for a sheet pallet is mounted on a forklift having a fork 43 for a normal flat pallet. The flat pallet on which the sheet pallet and the load loaded thereon are loaded is lifted by a fork, and the link mechanism is extended. By pushing the face plate forward, the load is pushed out together with the sheet pallet.

When unloading a load,
By supporting the flat pallet on the fork of the forklift, then extending the link mechanism of the push-pull device to bring the face plate closer to the load, gripping the tabs of the sheet pallet with the grip mechanism, and then retracting the face plate by the link mechanism Transfer the load with the sheet pallet to the flat pallet. Thus, a flat pallet is supported on a fork and used instead of a platen.

[0015]

FIG. 1 is a view showing a push-pull device mounted on a forklift used in the cargo handling method of the present invention. As shown in FIG.
0, a face plate 21 and a pantograph mechanism 22. The base end of the frame 20 is supported by a fixed bearing 23 and a movable bearing 24 slidable up and down so that a pantograph mechanism 22 is provided on the front surface. A forklift mast 41 is provided on the back of the frame 20.
(See FIG. 2) A locking claw 25 is provided which can be mounted on a finger bar 42 (shown in FIG. 2) provided laterally on the finger bar 42 (shown in FIG. 2).
6 and a cylinder 27 for driving the holding member 26 are provided. The pressing member 26 can be omitted when there is no need to collect the sheet pallets.

The face plate 21 is fixed to the fixed bearing 2.
8 and a movable bearing 29 slidable up and down, supported at the other end of the pantograph mechanism 22, and a lower portion includes a gripper jaw 30, a gripper plate 31, and a cylinder 32 for driving the gripper plate 31. Is provided. The gripper jaw 30 is movable upward from the state shown in the figure and is urged downward by a spring or the like (not shown). The gripper jaw 30 may be fixed when the holding member 26 is omitted.

The pantograph mechanism 22 is a collapsible parallel link mechanism as shown in the figure. The pantograph mechanism 22 can expand and contract by a drive mechanism (not shown) to move the face plate 21 forward and backward, and to move the face plate 21 horizontally with respect to the frame 20. I have. The stroke is slightly longer than the fork of the forklift, for example, several cm longer.

The push-pull device 4 configured as described above
As shown in FIG. 2, reference numeral 0 denotes a finger bar 42 provided laterally on a mast 41 of a forklift, which is fixed by a locking claw 25 of the frame 20 and mounted. Also, forks 4 for flat pallets are provided on the left and right of the push-pull device 40.
3 is mounted on the finger bar 42.

Next, the cargo handling method of the present invention will be described with reference to FIGS. FIG. 3 shows a case where a load is loaded on a truck, and a load 50 is previously loaded on a sheet pallet 52 placed on a flat pallet 51 as shown in FIG. Next, as shown in FIG. 3B, the forklift 53 equipped with the push-pull device of the present invention inserts the fork 43 into the flat pallet 51, and the upper surface of the flat pallet 51 is brought into contact with the loading platform 55 of the truck 54 whose tilt is lowered. Lift to the same height.

Next, as shown in FIG.
The tab 50 is gripped by the gripper 33 of the face plate 21, the pantograph mechanism 22 is extended in this state, and the face plate 21 is advanced, thereby pressing the load 50 and sliding the sheet pallet 52 together with the sheet pallet 52 into the bed 55 of the truck. Next, the gripper 33 is released, and the face plate 21 is further retracted by the pantograph mechanism 22. In this manner, the load 50 can be loaded on the truck 54.

When the load 50 is to be loaded on the back of the truck bed, the load 50 is loaded on the truck as described above, the flat pallet 51 is removed from the fork 43, and the pantograph mechanism 22 is fully extended. In this state, the forklift 53 is moved forward, and the load 50 can be pushed in by the face plate 21 so that the fork 43 does not hit the carrier 55.

FIGS. 4 and 5 show the case where the load is lowered from the truck. In FIG. 4A, a load 50 is loaded on a sheet pallet 52 and is loaded in a depth of a loading bed 55 of a truck 54. In this case, the forklift 53 first does not support the flat pallet, and extends the link mechanism 22 to the full,
The forklift is advanced, the tab of the sheet pallet 52 is gripped by the gripper 33 of the face plate 21, and then the forklift 53 is retracted to pull the load 50 to the end of the loading platform 55 as shown in FIG.

Next, the flat pallet 51 is supported by the fork 43 with the gripper 33 opened and the face plate 21 retracted, as shown in FIG.
1 is brought close to the load 50, and its upper surface is lifted to the same height as the loading platform 55.

Next, as shown in FIG. 5A, the face plate 21 is advanced, the tab of the sheet pallet 52 is gripped by the gripper 33, and the face plate 21 is retracted by the pantograph mechanism 22 as shown in FIG. 5B. Let it. As a result, the sheet pallet 52 is moved onto the flat pallet 51 with the load 50 loaded thereon as shown in FIG. Thereafter, the forklift 53 transports the load 50 to a predetermined place.

Note that, in FIGS. 3B and 3C, the sheet pallet can be collected as shown in FIG. That is, FIG.
One gripper 33 is gripping the tab of the sheet pallet 52. In this state, as shown in FIG. 6B, when the gripper 33 is released and the cylinder 27 of the frame 20 is operated to rotate the pressing member 26 in the direction of the arrow, the tip lifts the gripper jaw 30.

When the gripper jaws 30 are lifted, the tabs of the sheet pallet 52 disengage from the gripper jaws 30 and fall downward. Press the tab 2 as shown in FIG.
6. Pressing down on the flat pallet 51. By extruding the load by the face plate 21 in this manner, the load can be loaded onto the truck while leaving the sheet pallet 52, and the sheet pallet can be collected.

[0027] Next a second embodiment of a push-pull device which is mounted on the forklift Ru used for handling the process of the present invention will be described with reference to FIG. The push-pull device of this embodiment is basically the same as that of the first embodiment, except that a recess 35 is provided below a guide groove 34 provided in the frame 20. The position and the depth of the concave portion 35 need to be determined according to the position of the slide bush 24 at that time so that the face plate 21 is lowered by a predetermined dimension when the pantograph mechanism is fully extended.

This embodiment constructed as described above is provided at the base end of the pantograph mechanism 22 when the pantograph mechanism 22 is extended so as to advance the face plate 21 as shown in FIG. Slide bush 2
4 moves downward while being guided by guide grooves 34 provided in the frame 20.

When the pantograph mechanism 22 approaches the maximum extension point, the slide bush 24 falls into the concave portion 35 provided in the guide groove 34, and the pantograph mechanism 22
Is rotated counterclockwise about the fixed bearing 23.
As a result, the face plate 21 that has been supported by the pantograph mechanism 22 and moved horizontally descends. Also, when the pantograph mechanism 22 is contracted, the face plate 21 returns to the frame 20 along a trajectory reverse to the above. In such a configuration, the same cargo handling as the above embodiment can be performed.

[0030]

According to the present invention, a sheet pallet can be loaded and unloaded by mounting a push-pull device for a sheet pallet on a forklift having a normal fork for a flat pallet. Therefore, it is only necessary to modify the mounting of the push-pull device on the currently used ordinary forklift, which is more economical than purchasing a dedicated push-pull forklift. Further, since the sheet pallet can be used in combination with the flat pallet, after the load is transferred onto the flat pallet, there is no difference from the conventional cargo handling work. Therefore, it can be used on the small receiving side, and it greatly contributes to the integrated palletization from the large manufacturer to the small receiving side.

[Brief description of the drawings]

[1] the forklift to be used for loading and unloading method of the present invention instrumentation
It is a side view showing a 1st embodiment of a push pull device to be worn .

FIG. 2 is a perspective view showing a main part of a forklift used in the cargo handling method of the present invention.

3 is a diagram for explaining a cargo handling process of the present invention.

4 is a diagram for explaining a cargo handling process of the present invention.

5 is a diagram for explaining a cargo handling process of the present invention.

FIG. 6 is a diagram for explaining a sheet pallet collection method in the cargo handling method of the present invention.

[7] the forklift to be used for loading and unloading method of the present invention instrumentation
It is a side view which shows 2nd Embodiment of the push-pull apparatus worn .

FIG. 8 is a diagram showing a use state of the push-pull device of FIG . 7 ;

FIG. 9 is a view showing a conventional push-pull forklift.

FIG. 10 is a view showing a push-pull device in a conventional push-pull forklift.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 ... Frame 21 ... Face plate 22 ... Pantograph mechanism 23, 28 ... Fixed bearing 24, 29 ... Movable bearing 25 ... Locking claw 26 ... Holding member 27, 32 ... Cylinder 30 ... Gripper jaw 31 ... Gripper plate 33 ... Gripper 40 ... Push-pull device 41 ... Mast of forklift 42 ... Finger bar 43 ... Fork 50 ... Load 51 ... Flat pallet 52 ... Sheet pallet 53 ... Forklift 55 ... Truck bed

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsutomu Ikeda 3-45-1, Oyabe, Yokosuka City, Kanagawa Prefecture (72) Inventor Kiyoshi Watanabe 2-6-4, Higashi Onuma, Sagamihara City, Kanagawa Prefecture (72) Inventor Shigeru Komatsu Kanagawa (72) Inventor Ryozo Matsumoto 239-9 Tanaka, Sasaguri-cho, Kasuya-gun, Fukuoka Prefecture (72) Inventor Norio Tomimura 700-305, Minato-ri, Shimen-cho, Kasuya-gun, Fukuoka Prefecture (56) Reference Literature Shokai Sho 57-184899 (JP, U) Shokai Sho 53-2887 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66F 9/19

Claims (1)

(57) [Claims] 1. A forklift having a fork for a normal flat pallet, a face plate having a grip mechanism for gripping a tab of a sheet pallet at a lower portion, and a finger bar provided on a mast of the forklift so as to be detachably mounted. A push-pull device for a sheet pallet comprising a frame, a base end portion supported by the frame, and a telescopic pantograph mechanism for supporting and retreating the face plate at the other end thereof.
The flat pallet with the fork.
Load the sheet pallet using the pallet instead of the platen
A cargo handling method characterized by performing a role .