JP2523763Y2 - Earthwork grabber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement of an earthwork iron fork, and more particularly, to an earthwork gripping device suitable for handling an object having a constricted portion on the back, such as a block. .

[Problems to be solved by the invention]

The concrete block is heavy, and it is dangerous and inefficient to transport it by hand because it is installed in a place with poor scaffolding such as a slope. Even when working with mechanical power such as a power gripping device, the conventional gripping device is not a dedicated machine for that purpose, so it is difficult to operate it, often causing a fall accident, and also damaging a clue block or the like. In addition, there was also a problem in terms of efficiency because it could handle only one at a time.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a versatile earthwork gripping device that can safely and efficiently transport a block and can be used as a normal iron fork when the attachment is removed.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a pair of fork members opposed by a link mechanism driven by a hydraulic cylinder or the like in opposite directions with each base as a fulcrum. In a rocking earthwork gripping device, a pair of nails are fixedly attached to the tip of each fork of each fork member, and a gripping rod is integrally connected to the inside of a plurality of claws engaged with the nail adapters. A grip attachment is formed, and these grip attachments are detachably attached to the respective fork members via an engagement mechanism between the nail adapter and the nail.

[Action of the invention]

A gripper attached to a main body arm of an earthmoving machine such as a power shovel has a claw engaging adapter at a tip of each fork of a facing fork member. When each claw of a grip attachment is fitted to this adapter, the gripper becomes relative. This is a gripping device dedicated to a smart block equipped with a grip attachment on a pair of fork members.

Thus, when one or two or more intermediate blocks are arranged and clamped so that the gripping bar of the grip attachment is engaged with the constricted portion (neck) of each back, the intermediate block is transported reliably and safely. . In this case, the block is not damaged because the neck is sandwiched by a series of gripping rods, and moreover, a plurality of the blocks are transported to a predetermined position in an aligned state.

By removing the gripper attachment from the adapter and setting up another individual pawl, the gripper can be used as a regular iron fork.

[Example of the invention]

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the gripping device 1 has a pair of fork members 4 and 5 having operation links 2 and 3, and the bases of the fork members 4 and 5 are pivotally mounted on a connecting frame 7 by pins 6. And is integrally attached to the tip of the earthwork machine main body arm 8 via the connecting frame 7.

The links 2, 3 of the fork members 4, 5 are supported by a tip support shaft 11 of a hydraulic cylinder rod 10 supported by a guide link 9, and are operated by expansion and contraction of a cylinder 12.
By the operations of 3, 9, the pair of fork members 4, 5 open and close in opposite directions to grasp an object.

The above structure is the same as a so-called conventional iron fork, and is known per se.

The gripping device according to the present invention is characterized by a pair of fork members 4,
At the tip of each fork 4a, 5a of 5, a nail adapter 4b, 5b for engaging the nail
And the fork members 4, 5
The gripping rods 13 and 14 are integrally connected by welding to the inner ends of the nails 4c and 5c groups detachably engaged with the nail adapters 4b and 5b to form a pair of gripping attachments 15 and 16,
The pair of grip attachments 15 and 16 can be detachably attached to the corresponding fork members 4 and 5 via the attachment / detachment mechanism of the claw adapters 4b and 5b and the claws 4c and 5c.

That is, as shown in FIG. 2, a pair of grip attachments is composed of a grip attachment 15 in which the inside of a group of claws 4c mounted on a group of claw adapters 4b of one fork member 4 are integrally connected by a grip bar 13, and the other fork member 4. 5 each claw adapter 5b
It is composed of a grip attachment 16 in which a group of claws 5c mounted on the group are integrally connected by a grip rod 14.

In the figure, reference numeral 17 denotes a welding reinforcing plate for strengthening the connection between the claw and the gripping rod.

Thus, the grip attachments 15, 16 are connected to the claw adapters 4b, 5b of the fork members 4, 5, and the grip attachments 15, 1, respectively.
The male and female claws 4c and 5c are fitted to each other, and are detachably attached to the tips of the corresponding fork members 4 and 5 as shown in FIG. 1 through known engaging means (pin connection or other known means). In addition, a pair of grip attachments 15 and 16 that open and close in opposite directions sandwich a concave neck portion such as a concrete block 18 and are transported.

In the embodiment shown in the drawings, the intellectual block is illustrated as an object to be conveyed. However, the present invention is not limited to this, and is widely applied to an object having a concave neck.

If the grip attachments 15 and 16 are removed, they are used as iron forks for dismantling work and for transporting dismantled materials.

[Effect of the invention]

Since the gripping device of the present invention has the above-described configuration, it is convenient to carry an object having a concave neck portion such as a sling block to a predetermined working position. That is, the object is securely held because it is securely gripped, and a plurality of objects can be simultaneously transported to a predetermined position in a well-aligned manner without any need for manual operation, so that the work efficiency is remarkably improved and the effect of not damaging the object is obtained. .

Furthermore, if the grip attachment is removed, it can be used as a normal iron fork, so that it can be used for multiple purposes.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of an earthwork gripping device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a grip attachment attached to the gripping device of the present invention. 1 ... Grip device, 2,3 ... Operation link, 4,5 ... Fork member, 4a, 5a ... Fork, 4b, 5b ... Claw adapter, 4c, 5
c ... claw, 7 ... connecting frame, 8 ... body arm, 9
…… Guide links, 12… Hydraulic cylinders, 13,14… Grip bars, 15,16… Grip attachments.

Claims (1)

(57) [Scope of request for utility model registration] An earthwork gripping device for swinging a pair of fork members facing each other by a link mechanism driven by a hydraulic cylinder or the like in opposite directions with each base as a fulcrum, wherein each fork tip of each fork member is provided. And a pair of grip attachments in which grip bars are integrally connected to the inside of a plurality of claws engaged with the nail adapters, and these grip attachments are attached to the nail adapter. An earthwork gripping device, which is detachably attached to each fork member via a mechanism for engaging with a claw.