JPS641354Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to an improvement in a work tool attachment device applied to a cargo handling vehicle such as a forklift truck.

(Prior Art) In general, cargo handling vehicles such as forklift trucks are equipped with a finger bar that can be raised and lowered, and work tools such as forks, rams, and various attachments are attached to and removed from the finger bar through a work tool attachment device. installed as possible.

The most basic work tool attachment device is to weld L-shaped upper and lower claws to the top and bottom of the back of the tool and hook these to the upper and lower ends of a finger bar, while the lower claw is attached to the finger bar. It has a cutout for release.

However, in this type of device, when attaching and detaching the working tool, the working tool must be slid against the finger bar, which is extremely troublesome. Especially when the work tool is large and heavy,
This was very noticeable.

As a method for overcoming such difficulties, there are known, for example, those disclosed in U.S. Pat.

These are equipped with a lower claw that is rotatably attached to a working tool about a horizontal axis in the left-right direction, and a holding mechanism that holds the lower claw in a latching position.

However, since such a device requires a holding mechanism, its structure is complicated, and
The problem was that it was weak in strength.

(Problems that the invention attempts to solve) This invention was created in view of the problems mentioned above and to solve them, and its purpose is to:
To provide a work tool mounting device having an extremely simple structure and excellent strength.

(Means for Solving the Problems) The work implement attachment device of the present invention has an upper claw body provided on the upper rear surface of the work implement and engaged with the upper end of the finger bar, and a lower claw body provided protrudingly on the lower rear surface of the work implement. The bracket is provided with a recess formed in the upper surface of the bracket, a fitting part, and an abutting part, and is rotatably pivoted to the bracket from the latching position to the release position by a longitudinal axis, and is fitted in the latching position. The finger bar is characterized in that the finger bar fits into the recess and the abutting part includes a lower claw body that can abut against the lower back surface of the finger bar.

That is, the fitting portion of the lower claw body is fitted into the recess of the bracket, and the lower claw body is held in the latching position by gravity.

(Function) When attaching the work tool to the finger bar, place the lower claw body in the release position, engage the upper claw body with the upper end of the finger bar, and position the bracket below the lower end of the finger bar.

When the lower claw body is placed in the latching position, the insertion portion of the lower claw body fits into the recess, and the contact portion can come into contact with the lower back surface of the finger bar.

To remove the tool from the finger bar, follow the installation procedure in reverse order.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the structure of a work tool mounting device according to an embodiment of the present invention. FIG. 2 is a perspective view of the main part showing the lower claw body in the release position.

The main parts of the work tool mounting device 1 are composed of an upper claw body 2, a bracket 3, a recess 4, and a lower claw body 5.

The upper claw body 2 is provided on the upper rear surface of the working tool 10 and engages with the upper end portion 12 of the finger bar 11.

In this example, the upper claw body 2 is approximately L-shaped, the working tool 10 is a fork, and the finger bar 11 is a vertical plate-like member. is welded.

The bracket 3 protrudes from the lower rear side of the working tool 10, and in this example, a block-like member is welded to the lower rear side of the vertical piece of the fork, and this is located below the lower end 23 of the finger bar 11. It is arranged so that

The recess 4 is recessed in the upper surface of the bracket 3, and in this example, it is a groove extending in the left and right direction.
It is formed at a position spaced apart by the width of the finger bar 11.

The lower claw body 5 includes a fitting part 6 and an abutting part 7, and is rotatably pivoted to the bracket 3 by a longitudinal axis 8 from a latching position to a release position, and in the latching position, the fitting part 6 is recessed. At the same time, the abutting portion 7 can abut against the lower back surface of the finger bar 11.

In this example, a device having a substantially inverted U-shape on the side is used, and a fitting portion 6 in which the lower half of the front hanging piece fits into the recess 4 is used.
The upper half thereof is formed into an abutting portion 7 that can abut against the lower back surface of the finger bar 11, and the outer lower corner of the rear hanging piece is pivotally connected to the bracket 3 by a longitudinal axis 8. .

In this example, the above-mentioned parts are provided symmetrically, and the left and right lower claw bodies 5 are rotated outward from the latching position where they are brought together as shown in FIG. It can be rotated to the released position with double doors.

Next, the operation will be explained based on such a configuration.

When attaching the working tool 10 to the finger bar 11, the lower claw body 5 is first placed in the release position shown in FIG.

Next, the upper claw body 2 is engaged with the upper end 12 of the finger bar 11, and the bracket 3 is positioned below the lower end 13 of the finger bar 11.

When the lower claw body 5 is placed in the latching position as shown in FIG. .

Therefore, even if the working tool 10 tries to rotate forward, the abutting portion 7 of the lower claw body 5 comes into contact with the lower back surface of the finger bar 11, so this movement is blocked, and the working tool 10 is rotated from the finger bar 11. can prevent the material from falling off.

The lower claw body 5 is maintained in the engaged position by gravity, and will not inadvertently rotate to the released position even if the working tool 10 is slid in the left-right direction with respect to the finger bar 11. Particularly, when a pair of left and right lower claw bodies 5 are provided as in this embodiment, the above-mentioned problem is remarkable because the respective rotation directions are different and the lower claw bodies 5 are close to each other at the latching position.

When the working tool 10 is to be removed from the finger bar 11, it can be easily done by following the above-mentioned procedure of reversing the installation.

Note that the structures and shapes of the upper claw body 2, bracket 3, recess 4, lower claw body 5, working tool 10, and finger bar 11 are not limited to the previous embodiments.
The design can be changed as appropriate.

(Effects of the invention) As described above, according to the present invention, the following excellent effects can be achieved.

(1) The insertion part of the lower claw body is inserted into the recess of the bracket, and the lower claw body is held in the latching position by gravity, so there is no need for a special holding mechanism as in the past, and the structure is extremely simple. It is not only simple, but also has excellent strength.

(2) Since there is no special holding mechanism, the work tool can be attached and detached from the finger bar very easily.

(3) Since the lower claw body is rotated around the longitudinal axis, it can be easily rotated even if there is not enough room behind the finger bar.

(4) Since the structure is simple, the cost is low and there is no need to worry about breakdowns.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of a work tool mounting device according to an embodiment of the present invention. FIG. 2 is a perspective view of the main part showing the lower claw body in the release position. 1... Working tool attachment device, 2... Upper claw body, 3...
Bracket, 4... recess, 5... lower claw body, 10...
...Working tools, 11...Finger bars.

Claims (1)

[Scope of utility model registration request] An upper claw body provided on the upper back surface of the work tool and engaged with the upper end of the finger bar, a bracket protruding from the lower back surface of the work tool, a recess formed on the top surface of the bracket, and a fitting portion that engages with the upper claw body. The fitting part is rotatably pivoted to the bracket from the latching position to the release position by the longitudinal axis, and in the latching position, the fitting part fits into the recess and the abutting part comes into contact with the lower back surface of the finger bar. A work tool mounting device characterized by comprising a lower claw body that can be fitted together.