JPH03172298A - Attachment for forklift - Google Patents

Abstract

PURPOSE:To obtain efficient transshipping work of a cargo on a forklift by suitably combining hoisting action by a vacuum unit, absorbing action by a sucker, and horizontally moving action by the vacuum unit within the range allowed by a swing arm. CONSTITUTION:A vacuum unit 24 is arranged at the underside of the tip part of a second arm 18 and ascended or descended by a hoisting device 19. The lower surface of the vacuum unit 24 is provided with a suitable number of suckers 25 and a handgrip 26. The handgrip 26 is provided with a means 27, which starts or stops a motor 13 of the hoisting device 19 and which turns on or off the motor or a solenoid closing valve for the vacuum pump 24. With this contrivance, transshipping of a cargo on the forklift can be done by the mechanical force using the attachment. Therefore, worker's labor can be reduced, and moreover the efficiency of transshipping work can be hightened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an attachment for a forklift, and more particularly to an attachment that is effective for transshipment work of cargo loaded on a fork.

(Prior Art) Conventionally, the loading work of cargo into containers, etc. is roughly divided into loading by unmanned vehicles, loading by small forklifts, and loading by hand. This type of manual loading is carried out, for example, when loading cardboard-packed products into containers, as shown in Figure 6.
A worker drives a small forklift 40 into the container C and manually transfers the cargo W on the fork 41. This is done by collecting the pallet P and loading it in a corner of the container to improve loading efficiency. Stowage is often carried out to improve efficiency by efficiently loading all the parts.

(Problem to be solved by the invention) However, such manual transshipment work requires hard physical labor for the workers, even if the cargo is lightweight, and has the problem of poor work efficiency. .

Therefore, an object of the present invention is to provide an attachment for a forklift that can easily and efficiently carry out the above-mentioned manual reloading work of cargo on a fork.

(Means for Solving the Problems) In order to solve the above problems, the present invention is configured as follows.

That is, in the attachment according to the present invention, the lower side of the lift bracket that moves up and down along the mast is provided with a finger bar for the fork, and the upper side is provided with a finger bar for the attachment. A swing arm is horizontally rotatably supported at its base end and extends horizontally on the finger bar.

In addition, the swing arm is configured to have a rotation point set at at least one location in its extending direction so that it can be bent.
Further, a vacuum unit having an appropriate number of suction cups and a hand grip is disposed below the tip of the swing arm, and the vacuum unit is configured to be raised and lowered by a hoisting device. The vacuum unit is provided with operating means for operating the suction function of the vacuum unit and starting and stopping the hoisting device.

(Function) In the attachment configured as described above, the hoisting device raises and lowers the vacuum unit, the suction cup sucks the load, and the swing arm horizontally moves the vacuum unit within the range allowed. By appropriately combining these, it is possible to move the load on the fork to another location. That is, the worker can horizontally move the vacuum unit while grasping the hand grip installed on the vacuum unit and appropriately operating the operating means, thereby efficiently stacking the cargo on the fork into, for example, a container.

(Example) Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 to 174.

In the figure, 1 is a forklift vehicle body, and 2 is a mast erected at the front of the vehicle body 1. Reference numeral 3 denotes a lift 1 to a bracket that is raised and lowered along the mast 2, and a lower finger bar 5 for mooring a fork 4 is provided on the lower side of the lift bracket 3. Posts 6 are erected at both left and right ends of the lower finger bar 5, and an upper finger bar 7 for mooring an attachment is provided on the top of the post 6.

A hand unit 8 is attached to the upper finger bar 7. This hand unit 8 has a winding device 9 inside.
It is a rectangular box 10 containing a built-in box, and is moored to the upper finger bar 7 via a hook 10a so as to be able to slide in the width direction as necessary. In this case, the hand unit 8 is, for example, It is preferable to configure the device so that it can be slid by operating a handle via a feeding mechanism configured by combining a screw and a nut.

Further, the winding device 9 includes at least a wire row 111.
The drum 12 is configured to include a drum 12 for winding up the drum 12, and an electric motor 1i13 with a speed reducer capable of forward and reverse rotation for rotating the drum 12.

A swing arm 14 extending horizontally above the fork 4 is attached to the hand unit 8. This swing arm 14 is a box 10
A first arm 16 whose base end is horizontally rotatably attached to the upper surface via a swing center bin 15; It consists of two arms 18, and is configured to be able to bend at an approximately intermediate portion.

Further, the swing center bin 15 is formed hollow,
The wire row 111 of the hoisting device 9 is pulled out through this bottle hole 15a. And wire robe 11
is pulled out to the distal end of the first arm 16 through a guide pulley 20 installed on the upper surface of the first arm 16 via a pulley bracket 19, and a pulley bracket is placed on the rotation center of the second arm 18. 21, the second arm 1 passes between a pair of horizontally installed guide pulleys 22.
It is pulled out to the tip of the second arm 18, and then pulled out downward via a guide pulley 23 attached to the tip of the second arm 18, and a vacuum unit 24 is suspended from the pulled-out end. That is, the vacuum unit 24 is arranged below the tip of the second arm 18 and is raised and lowered by the hoisting device 9.

Although not shown in the drawings, it is desirable to provide the guide pulleys 20 and 22 at the arm base and the arm tip with retainers for the wire rows 111 to prevent the wire rows 111 from coming off. and guide pulley 2
It is desirable to attach a cover to cover 0, 22, and 23.

The vacuum unit 24 is equipped with an appropriate number of suction cups 25 on its lower surface, and a hand grip 26 on its side. C1 This hand grip 26 has a device for starting (forward and reverse rotation) and stopping the electric motor 13 of the hoisting device 9, and for turning on and off the electric motor or electromagnetic on-off valve (not shown) of the vacuum pump 28. , for example, is equipped with operating means 27 such as a push button switch or a touch switch. The vacuum hose 29 that connects the suction 511125 and the vacuum pump 28 provided on the vehicle body 1 side and the electric cord 30 that connects the operating means 27 to the power source and to the device to be operated are connected to at least the hand unit 8 and the vacuum unit 2411. In some cases, it is arranged along the lower surface of the swing arm 14,
The wire lobe 11 is wound spirally between the tip of the swing arm 14 and the vacuum unit 24 so as to be able to move up and down the vacuum unit 24. Also, although not shown, the vacuum hose and electric cord between the hand unit 24 and the vehicle body side are arranged along the mast 2 using a bobbin or reel so that the lift bracket can be lowered four times. .

The attachment of this embodiment is constructed as described above, and its operation will be explained below.

1 and 2 show a state in which the swing arm 14 is pulled forward in order to load cargo using the attachment. In such a state, the worker can freely move the vacuum unit 24 within the range allowed by the swing arm 14 as shown by the imaginary line in the figure by grasping the hand grip 26 of the vacuum unit 24 and pushing and pulling it back and forth, left and right. It can be moved horizontally. In this case, the guide pulley 20 on the base side and the intermediate guide pulley 22 that guide the wire row 111 suspending the vacuum unit 24 correspond to the swing center bin 15 and the bin 17, which are the rotation centers of the swing arm 14. Since the wire loaf 11 is set in a horizontal position, the problem that the wire loaf 11 becomes tense or relaxed due to the horizontal rotation of the swing arm 14 does not occur.

On the other hand, by appropriately operating the operating means 27 of the hand grip 26 to rotate the electric motor 13 of the hoisting device 9 in the forward or reverse direction, the wire rope 11 can be taken off or rewound to move the vacuum unit 24 up and down. , and the vacuum pump 28's electric motor or electromagnetic
By turning the opening valve on and off, the baggage W is removed by the suction cup 25.
can be absorbed or released.

Therefore, when loading cargo W into a container, for example, the worker loads the cargo W onto the fork 4 and carries it into the container, and then lifts the cargo W onto the fork 4 by operating the attachment in a complex manner as described above. of cargo W can be easily and efficiently stowed inside a container.

Incidentally, when stowing the cargo W at a location, the entire attachment together with the fork 4 is raised along the mast 2, and if necessary, a worker can climb onto the fork 4 and carry out the stowing work. At this time, it is desirable to provide an appropriate detector 31 such as an optical sensor at the highest part of the swing arm 14 to detect the height of the ceiling of the container to avoid contact with the ceiling.

Further, when performing fork work, the attachment is stored so as not to interfere with the fork work. That is, with the vacuum unit 24 raised to the maximum, the swing arm 14 is folded toward the upper finger bar 7 in a substantially V-shape as shown by the dashed line in FIG. 1, thereby converting the vacuum unit 24 into a hand unit. It is stored in a state close to or in contact with 8, so that it does not protrude from the width of the vehicle. In addition, it is desirable to lock this stored state using a suitable locking means such as a hook or a lock bin to prevent the fork from wobbling during work.

Next, another embodiment shown in FIG. 5 will be described.

In this embodiment, the vacuum source and power source are obtained externally.
A hose reel 33 and a hood reel 34 are attached to the rear upper part of the head guard 32, and each reel 33.3
The tips of the vacuum hose 35 and the power supply cord 36 wound around 4 are in contact with quick turntables 35a, 36a and guide rollers 37 for contacting the vacuum or power supply port to prevent excessive winding. Stopper rubbers 35b and 36b are provided for this purpose. Note that the piping and wiring from the hose reel 33 and cord reel 34 to the vacuum unit 24 side are similar to those in the above-mentioned embodiment.

Therefore, according to this embodiment, containers are loaded at a station or the like, and if attachments are used, the vacuum hose 35 and power supply cord 36 are pulled out and the vacuum or power supply set on the ground or ceiling is connected. By connecting the mouth with the quick couplers 35a and 36a, an external vacuum source or power source can be used, so a strong suction effect can be obtained and operation can be performed for a long time.

Although the present invention has been illustrated and described with reference to preferred embodiments, various modifications can be made without departing from the spirit of the invention. For example, the guide pulley can be omitted by incorporating the vacuum pump 28 into the hand unit 8, by driving the vacuum pump 28 by the engine in the case of an engine vehicle, or by replacing the hand unit 8 with the tip of the swing arm 14. The swing arm 14 is attached to the upper finger bar 7, the swing arm 14 is hollow, each guide pulley 20°22.23 is built in, and the wire lobe 11 is passed through, and the entire attachment is independent of the fork 4. It is possible to configure the vacuum unit 24 so that it can be raised and lowered independently, and to operate it from the vacuum unit 24 at hand.

(Effects of the Invention) As detailed above, according to the present invention, the work of reloading cargo on forks, which conventionally relied on manual labor, can be performed by mechanical force using an attachment, thereby reducing the labor of the worker. Needless to say, the efficiency of transshipment work can be improved. In addition, in the present invention, by configuring the vacuum unit to be suspended by a hoisting device, the vacuum unit can be moved beyond the movable range of the swing arm, and furthermore, by adopting a system in which the baggage is absorbed by the vacuum, the baggage can be can be handled quickly.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention, and FIG. 1 is a schematic plan view of an attachment mounted on a forklift;
Figure 2 is the same (schematic side view, Figure 3 is a plan view showing only the attachment, Figure 4 is a partially broken side view,
FIG. 5 is a side view showing another embodiment of the present invention, and FIG. 6 is an explanatory view showing a conventional work of transferring cargo on a fork by a worker. 1... Vehicle body 2... Mast 3... Lift bracket 4... Fork 6... Finger bar for fork 7... Finger bar for attachment 8... Hand unit 9... Hoisting Device 14... Swing arm 16... First arm 18... Second arm 24... Vacuum unit 25... Suction cup
26...Hand grip 27...Operation means

Claims (1)

[Claims] The lift bracket that moves up and down along the mast has a fork finger bar on the lower side and an attachment finger bar on the upper side, and the base end is supported by the attachment finger bar so that it can rotate horizontally. The swing arm extends horizontally, and a rotation point is set at at least one point in the extending direction of the swing arm to make the swing arm bendable. A vacuum unit equipped with a suction cup and a hand grip is disposed, and the vacuum unit can be raised and lowered by a hoisting device, and the vacuum unit is provided with a suction function of the vacuum unit and the start/stop of the hoisting device. Forklift attachment with operating means for.