JPH0636068Y2 - Container spreader device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a container spreader device used for loading and unloading containers.

(Prior Art) Conventionally, when loading and unloading a container in a loading and unloading vehicle such as a forklift truck, a container spreader device as shown in FIGS. 2 to 4 is used.

In the container spreader device, a frame c is provided in a lateral direction on a spreader body b that can be raised and lowered with respect to a mast a, and the frame c accommodates the base side of an extendable boom e by an extendable cylinder d.

At the tip side of each boom e, a horizontal rod f is arranged horizontally in the front-rear direction.
Twist lock pins h for suspending the container g are projectingly provided on lower surfaces of both ends of the horizontal rod f, and the left and right gaps l ₁ , l _{2 of the} twist lock pins h are provided.
Are set so as to match the spacing of the suspension holes of the large container g when the boom e is fully extended and the spacing of the suspension holes of the small container g when the boom e is most shortened. The distance l ₃ before and after the twist lock pin h is fixed.

(Problems to be solved by the invention) However, there are marine containers carried by ships and railway freight containers carried by rail in the container g.
There are 3 types of sealand containers, 1A type, 1AA type, and 1C type, and 1 type, 2 types for rail freight containers.
There are three types, three and three.

In some of these containers, the spacing of the hanging holes is different, so in the conventional container spreader device, when a container spreader for a sea container is used, the sea container cannot be loaded in a container for rail freight. On the other hand, when the rail freight container may not be able to load and unload both containers, a forklift truck equipped with a container spreader device and a forklift truck equipped with a fork device are prepared for cargo handling work. ing.

However, in this method, it is necessary to change the vehicle every time the container changes, and the work is complicated, and when loading a container without a fork pocket by the fork device, the fork is forced to be inserted under the container, There was a problem such as damage to the container.

There is a cylinder like a micro film attached to the application for Japanese Utility Model Application No. 63-58 (Japanese Utility Model Laid-Open No. 1-106484) in which the distance between the twist lock pins is changed. Are required, the structure is complicated, and there is a problem in cost.

Further, since the positioning of the cylinder is visually performed, there is a problem that the operation is complicated and is not suitable for safe work.

The present invention has been made for the purpose of improving the above problems, and an object of the present invention is to provide a container spreader device having a simple structure and capable of easily handling containers of different sizes and types.

(Means and Actions for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides a frame of a spreader main body that is vertically movable on a mast with a left and right boom that can be expanded and contracted in the left and right directions by an expansion and contraction cylinder. In the container spreader device, horizontal rods are provided in the front-rear direction at the ends of the left and right booms, and twist lock pins that are detachably engaged with the suspension holes of the container are provided on the lower surface of both ends of the horizontal rod. A slide frame that is slidable in the front-rear direction by a slide cylinder is provided at one end of the rod, and one of the front and rear twist lock pins is provided on the lower surface of the front end side of this slide frame to rotate the twist lock pins that are spaced forward and backward. The interlocking rod to be expanded and contracted freely according to the slide of the slide frame The present invention provides a container spreader device in which the left and right and front and rear intervals of twist lock pins can be adjusted according to the size and type of container by providing a lock mechanism for fixing the lock spreader.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawing shown in FIG.

In the figure, reference numeral 1 denotes a spreader body, which is a mast erected on the front part of the vehicle body of a forklift truck (neither is shown).
It is mounted so that it can move up and down.

The spreader body 1 has a pair of frames 3 that can be shifted back and forth by a shift cylinder 2.

These frames 3 are horizontally provided with being separated in the front-rear direction, and the base end sides of the left and right booms 4 are slidably inserted into the frames 3, respectively.

The left and right booms 4 are composed of two pieces on each side, that is, four pieces in total, and the base end portions of the booms 4 are fitted and inserted in the front and rear frames 3, respectively. The horizontal rod 5 is fixed horizontally.

Further, between the horizontal rod 5 and the support member 6 supporting the frame 3, a pair of telescopic cylinders 7 arranged so that the directions of the piston rods 7a are staggered are horizontally mounted. The rod 5 and the boom 4 can be expanded and contracted in the left-right direction.

On the other hand, a twist lock pin 9 that engages with a suspending hole of the container 8 to lift the container 8 is rotatably provided on the lower surface of the rear side of each of the horizontal rods 5, and each horizontal rod 5
The rear end side of the slide frame 10 is slidably accommodated in the front end side of the.

Referring to FIGS. 1 and 5, the slide frame 10 described above.
A slide cylinder installed in the horizontal rod 5 at the rear end.
The tip of the piston rod 11a of 11 is pivotally attached, and the left and right slide frames 10 are simultaneously slidable in the front-rear direction by these slide cylinders 11, and the twist lock pin 9 is also provided on the lower surface of the tip end side of the slide frame 10. The twist lock pin 9 is provided so that it can move a distance L as the slide frame 10 slides.

Further, the twist lock pin 9 provided at the rear end of the horizontal rod 5 and the front end of the slide frame 10 is interlocked with the rotation by an interlocking rod 12.

The interlocking rod 12 is formed of two members 12a and 12b so that the motion can be transmitted even if the slide frame 10 expands and contracts with respect to the horizontal rod 5, and the other member 12b is expandable and contractable at the end of one member 12a. An electromagnetic lock mechanism 14 for locking between the two members 12a and 12b at the expanded / contracted position is provided in the expansion / contraction part.

Further, a lock pin cylinder 13 is provided between the interlocking rod 12 and the horizontal rod 5, and by moving the interlocking rod 12 back and forth by this lock pin cylinder 13, the front and rear twist lock pins 9 are simultaneously rotated 90 °. You can do it.

Next, the operation will be described. The horizontal rod 5 and the slide frame 10
The twist lock pin 9 on the left and right is 20 feet or more when the left and right booms 4 are fully extended.
To 40 feet, or 12 feet when shortened most or
When the distance is set in advance to 20 feet and the suspension holes are spaced at 20 feet or 40 feet, the left and right booms 3 are extended most and the suspension holes are spaced at 12 feet.
Shortest left and right booms 3 at feet or 20 feet.

When the front and rear spacing of the twist lock pin 9 changes depending on the type of the container 8, the slide cylinder 11 slides the slide frame 10 at the front end of the horizontal rod 5 back and forth to adjust the front and rear twist lock pins 9 to a predetermined distance.
Adjust so that it matches the distance between the front and rear suspension holes.

When the slide frame 10 is expanded or contracted, the electromagnetic lock mechanism 14 is used to fix the members 12a and 12b of the interlocking rod 12 that is expanded and contracted in conjunction with the slide frame 10 so that the front and rear twist lock pins 9 can be simultaneously rotated. After lowering the spreader body 1 above the container 8 and inserting each twist lock pin 9 into the suspending hole of the container 8, the spreader body 1 is rotated 90 ° by the lock pin cylinder 13 to suspend the twist lock pin 9 from the container 8. By engaging the lowering hole, the container 8 is suspended as the spreader body 1 is lifted, and is used for cargo handling.
By adjusting the left and right distances and the front and rear distances of the twist lock pins 9, even if the size or type of the container 8 changes, the cargo handling can be performed correspondingly to these.

In the above embodiment, the electromagnetic lock mechanism 14 is used to fix the expansion and contraction between the members 12a and 12b of the interlocking rod 12, but it is of course possible to use a mechanical lock mechanism for locking.

(Effects of the Invention) As described in detail above, the present invention enables adjustment of the left-right spacing and the front-back spacing of the twist lock pins according to the size and type of the container. This enables cargo handling from sea containers to rail freight containers.

As a result, work efficiency is significantly improved compared to when a cargo handling vehicle equipped with a container spreader device is prepared for cargo handling, and the fork device does not handle containers without fork pockets. The device makes it possible to solve problems such as damage to the container.

In addition, the present invention can provide a cheap spreader device because the number of cylinders is small, the structure is simple, and the cylinders can be easily positioned.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention, and FIGS. 2 to 4 are explanatory views of a conventional container spreader device. FIG. 5 is an explanatory view showing an enlarged detail of the slide frame in a view taken along the line VV of FIG. 1 …… Spreader main body 3 …… Frame 4 …… Boom 5 …… Horizontal rod 8 …… Container 9 …… Twist lock pin 10 …… Slide frame 12 …… Interlocking rod 14 …… Lock mechanism

Claims (1)

[Scope of utility model registration request] 1. A left and right boom 4 is provided on a frame 3 of a spreader body 1 mounted on a mast so as to be vertically movable by a telescopic cylinder 7 so that the left and right booms 4 can extend and contract in the left and right directions. 5 is provided with twist lock pins 9 that are detachably engaged with the suspension holes of the container 8 on the lower surfaces of both ends of the horizontal rod 5, and a slide cylinder is provided at one end of the horizontal rod 5. A slide frame 10 that is slidable in the front-rear direction is provided by 11, and one of the front and rear twist lock pins 9 is provided on the lower surface on the tip side of the slide frame 10.
The interlocking rod 12 for rotating the twist lock pin 9 which is spaced apart in the front and rear is made expandable and contractable in accordance with the slide of the slide frame 10, and a lock mechanism 14 for fixing the expansion and contraction portion at an arbitrary expansion and contraction position is provided. Container spreader device.