JPS583826Y2 - Grap Bucket - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a grab bucket that grabs and transports earth, sand, garbage, scraps, etc. using a plurality of shells suspended by wires.

Conventional grab buckets have a pair of shells that descend onto the earth and sand to grab it, and if the earth and sand cannot be grasped sufficiently, just by grabbing a small amount of earth and sand, one step of transporting the earth and sand is completed. Otherwise, the shell must be raised without grabbing the earth and sand and the descent must be repeated, resulting in a decrease in work efficiency.

This invention provides a grab bucket in which the grab bucket is composed of four shells that can be opened and closed independently, and when the grab bucket is on the ground, only one pair of shells facing each other is opened and closed to collect earth and sand. It is.

An embodiment of this invention will be described based on the drawings.

Reference numeral 1 designates a vertical rod, which is formed by abutting two groove-shaped steels 1a and 1a to form a square pillar, and has a through hole 2 at its upper end for suspending a wire.

Reference numeral 3 denotes a horizontal rod, and four groove steels 3a are welded and attached to the lower end of the vertical rod 1 in a cross shape, and a connecting fitting 5 having a through hole 4 is provided at each tip of the groove steel 3a. .

A bracket 6 is installed between each bent horizontal rod 3 and vertical rod 1 for reinforcement.

Reference numeral 7 denotes a shell, which is constructed by attaching two bone members 9 along the back surface of a substantially trapezoidal plate 8 curved inward, and a shell 10 base 11 is formed in which a through hole 10 is provided in the bone members 9. An arm 12 is integrally protruded from the base 11.

Then, place four shelves at each end of the horizontal rod 3,
Pivotal attachment is achieved by fitting the metal fitting 5 into the base 11 and inserting bolts 13 into the through holes 4 and 10.

Further, as shown in FIGS. 4 and 5, among the two pairs of opposing shells I mentioned above, the tips 7a and 7a of one of the opposing shelves are
A plate-shaped abutting portion 14 is integrally provided only in each,
No openings are provided at the tips 7b, 7b of the other opposing shelf.

15 is a cylinder, and the piston rod 16 is moved by air pressure.
A compressed air pipe 17 configured to expand and contract, and communicating with an air compressor and an air operation control device, both of which are not shown.
are connected.

The four cylinders 15 each have a piston rod 16 whose tip end is pivotally connected to the end of each arm 12 via a pin 18, and a clevis 2 whose base end 19 is fixed to the upper part of the vertical rod 1.
0 via a bin 21.

The grab bucket of the present invention configured as described above has vertical rod 1.
The shelf is suspended by a wire inserted through the through hole 2 of the shelf above the earth and sand, and first, all four shelves are fully opened by retracting the piston rod 15 by operating the air-operated control device.

Next, the grab packet is dropped onto the earth and sand, and when it touches the ground, the piston rod 15 is extended and the shelf is completely closed. At this time, the abutment part 14 and the tip 7b dig into the earth and sand and grab the earth and sand.

In addition, if the grab bucket is unable to grab a sufficient amount of earth and sand during descent due to the shape of the earth and sand, the abutting portion 14 of one of the opposing shelves can be operated by the air actuation control device.
Open and close only the opposite shelf on the other side of the abutting state to sufficiently scrape the surrounding earth and sand into the grab bucket.

Then, when the grab bucket is sufficiently filled with earth and sand, the other opposing shelf is closed, and the grab bucket is lifted up by a wire and transported to another location.

As described above, according to the grab bucket of the present invention, even if the amount of dirt, etc. that is initially grabbed after descending is small, the grab bucket can be transported after sufficiently scooping up the dirt, etc. by opening and closing the shelf while the grab bucket is in contact with the ground. Therefore, unlike conventional grab buckets, there is no need to redo the descent, which can greatly help improve work efficiency.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the grab bucket according to this invention, and FIG. 1 is an overall front view, FIG. 2 is a front view of the assembled state of the vertical rod and horizontal rod, and FIG. 3 is a front view of the assembled state of the vertical and horizontal rods. FIG. 4 is a front view of the shell, FIG. 4 is a side view of the shell, and FIG. 5 is a bottom view of the grab bucket in a closed state. 1...vertical rod, 3...horizontal rod, 1...
... Shell, 8 ... Plate, 11 ... Base, 12 ... Arm, 14 ... Butt part, 15 ... Cylinder 7a・・・・・・Tip.

Claims (1)

[Scope of utility model registration request] A horizontal rod is attached in a cross shape to the lower end of a vertical rod whose upper end is suspended by a wire, and a shell made of a curved approximately trapezoidal plate is pivotally attached to each tip of the horizontal rod at its base. An abutting portion is provided protruding only at the tip of one of the opposing shells, and a telescopic cylinder is provided between the arm provided at the base of each shell and the upper part of the vertical rod. A grab bucket that is characterized by the ability to