JP2541879Y2 - Grab bucket device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gripping bucket device having an auxiliary bucket attached to a conventional excavating bucket device and having a gripping function.

[Conventional technology]

In civil engineering work or demolition work, a bucket device driven by a hydraulic device is used, but it is always experienced that a gripping work is required to remove foreign matter such as excavated stones.

Therefore, various types of double gripping buckets having a gripping function in the excavation function have been proposed. In a conventional gripping bucket device, an auxiliary bucket is rotatably attached to a tip portion of an arm, and the auxiliary bucket is attached to the arm. An auxiliary ring is connected to a tilt link provided at an intermediate portion of the arm using an auxiliary ring, and the movement of the tilt link opens and closes the auxiliary bucket.

[Problems to be solved by the invention]

However, in these gripping bucket devices, the interval between the mounting tip hole and the intermediate hole provided at the tip of the arm of the excavating bucket device is not fixed by the manufacturer, so that the bucket device (including the gripping bucket device) is used. )
If you only want to manufacture, you must manufacture buckets and other accessories to the dimensions of the manufacturer,
There was a problem that consistent production was not possible.

Therefore, the arm is mounted on the site according to the dimensions of the arm, but there is a problem that it takes time to adjust the arm.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a gripping bucket device which can be easily attached even if the distance between the tip hole and the intermediate hole of the arm is different and has sufficient strength. Aim.

[Means for solving the problem]

According to the present invention, there is provided a gripping bucket device according to the present invention, which includes a mounting bracket attached to a tip of an arm, a main bucket rotatably mounted on the tip of the arm together with the mounting bracket, and a pair of the main bucket. And an opening / closing link that opens and closes the auxiliary bucket in response to the movement of the main bucket driven by a cylinder. The mounting bracket is formed in a box shape according to the part, and the front end of the mounting bracket is axially mounted on the tip end hole of the arm, and the rear side can slide through a long hole formed in the side plate of the mounting bracket. The auxiliary bucket is rotatably mounted on the bottom of the mounting hardware so as to be rotatably mounted on the intermediate hole of the arm through a bush.

[Action]

In the gripping bucket device according to the present invention, since the mounting hardware for mounting the main bucket and the auxiliary bucket at the tip of the arm is formed in a box shape according to the shape of the arm,
The strength is greater than the mounting hardware consisting of only the side plates, and the number of parts is reduced.

The mounting hardware is axially mounted on the distal end hole of the arm, but is mounted on the intermediate hole of the arm via a bush slidable through a long hole formed in the side plate. The arm can be freely attached to an arm having a slightly different distance between the intermediate holes without particular modification.

In addition, since the auxiliary bucket is mounted on the bottom of the mounting hardware, it can be mounted without on-site work such as welding.

Further, since the pivot center of the auxiliary packet is separated from the pivot center of the main bucket, the opening at the base end side when opened is increased, so that a larger object can be held.

〔Example〕

Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

FIG. 1 is a side view of a gripping bucket device according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of mounting hardware used in the gripping bucket device, and FIG. FIG.

As shown in FIG. 1, a gripping bucket device 10 according to an embodiment of the present invention includes a main bucket 11 for excavation, an auxiliary bucket 12 that is paired with the main bucket 11, a main bucket 11 and an auxiliary bucket. It is configured to include a mounting hardware 13 on which the shaft 12 is mounted, and a tilting link 14, an opening / closing link 15, and a connecting link 16 for rotating the mounting hardware 13. Hereinafter, these will be described in detail.

First, the mounting hardware 13 will be described in detail with reference to FIGS. 3 and 4. The mounting hardware 13 is formed in a box shape by the side plates 17, 18 and the upper plate 19 and the lower plate 20, and the arm of the excavator is provided. It is designed to be attached to the tip of 21.

A bush 23, 24 with a flange is mounted from the inside at the tip of the mounting hardware 13 coaxially with the tip hole 22 of the arm 21, and a pin 25 is fitted therein.

An elongated hole 27 corresponding to the intermediate hole 26 of the arm 21 is formed in an intermediate portion of the mounting hardware 13, and the elongated hole 27 also has flanged bushes 28 and 29 in which the upper and lower portions are flattened. The shaft 30 is fitted by a pin 30 into which the intermediate hole 26 is fitted. In addition, stoppers 31 and 32 are provided on both sides of the side plates 17 and 18 so that the tilt link 14 does not rotate beyond a certain angle.
And a shaft hole 34 in which a pin 33 for rotatably fixing one end of the auxiliary bucket 12 is fitted. Attach this mounting hardware 13 to the arm 21,
The state in which the main bucket 11 and the auxiliary bucket 12 are mounted is the first
As shown in FIG. 2 and FIG. 2, one end of the main bucket 11 is
The arm 21 is rotatably attached to the tip of the arm 21 by a pin 25 via.

On the other hand, the auxiliary bucket 12 is rotatably mounted on a base portion of the mounting hardware 13 via a pin 33, and a shaft hole provided on an extension of the rotation center of the main bucket 11 and a base end of the auxiliary bucket 12. The pivot hole 15 is rotatably connected to the shaft hole via pins 35 and 36 via a pivot link 15, and when the main bucket 11 rotates in a certain direction, the auxiliary bucket 12 rotates in the opposite direction. The main bucket 11 and the auxiliary bucket 12 are simultaneously opened and closed.

One end of the tilting link 14 is pivotally mounted on the intermediate hole 26 by a pin 30. The other end of the tilting link 14 has a main bucket
The other end of the connection link 16, one end of which is axially mounted by a pin 37 in a shaft hole formed in the bottom of the 11, is axially mounted by a pin 39 together with the distal end of a cylinder rod 38.

Therefore, when the cylinder rod 38 is advanced, the tilt link 14 tilts about the pin 30, and the force is transmitted to the connecting link 16, and the main bucket 11 rotates counterclockwise about the pin 25.

As a result, the force is transmitted to the opening / closing link 15 connected by the pins 35 and 36, and the auxiliary bucket 12 rotates clockwise around the pin 33, and as a result, the object is grasped by the main bucket 11 and the auxiliary bucket 12. It becomes possible.

Next, when the cylinder rod 38 is pulled, the main bucket 11 and the auxiliary bucket 12 are opened as shown by a two-dot chain line in the operation opposite to the above operation.

The auxiliary bucket 12 is composed of only the outer frame, and only sandwiches an object in pair with the main bucket 11. However, the auxiliary bucket 12 may have a bottom and serve as a lid of the main bucket 11.

Further, the tip of the auxiliary bucket 12 and the main bucket 11 are connected and fixed by an auxiliary member such as a connecting plate, and the tilting link 14 for connecting these is removed, so that the operation of the auxiliary bucket 12 matches the operation of the main bucket 11. It is also possible to use the whole as a digging bucket.

The oval reinforcing plate 36a for pivotally mounting the pins 33, 36 is welded and fixed to the auxiliary bucket 12, and the oval reinforcing plate 35a for pivotally mounting the pins 35, 25 is fixed to the main bucket 11 by welding. The plates 35a, 36a, the pins 33, 35, 36, and the opening / closing link 15 are omitted in FIG.

[Effect of the invention]

As is clear from the above description, since the hole connected to the intermediate hole is a long hole, the distance between the tip hole and the intermediate hole differs depending on the manufacturer or the like. It can be easily mounted without the need for on-site work such as welding or cutting. in this case,
Since the mounting hardware is attached to the arm of the excavator, and the main bucket and the auxiliary bucket are mounted on the mounting hardware, the degree of opening and closing is always uniform, and the position of the tip end hole and the intermediate hole of the arm is temporarily determined. , The main bucket and the auxiliary bucket having a fixed opening angle degree can be mounted without the need to adjust the opening and closing of the bucket.

Further, since it is formed in a box shape in accordance with the arm to which the mounting hardware is attached, a large force can be transmitted to the main bucket from all circumferential directions, whereby the excavation direction of the main bucket can be expanded.

[Brief description of the drawings]

FIG. 1 is a side view of a gripping bucket device according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of mounting hardware used in the gripping bucket device, and FIG. FIG. [Description of Signs] 10 ... Grip bucket device, 11 ... Main bucket, 12 ... Auxiliary bucket, 13 ... Mounting hardware, 14 ... Tilt link, 15 ...
… Opening / closing link, 16 …… Linking link, 17, 18 …… Side plate, 19
... upper plate, 20 ... lower plate, 21 ... arm, 22 ... tip hole, 23, 24 ... bush, 25 ... pin, 26 ... ... intermediate hole,
27… Long hole, 28, 29… Bushing, 30… Pin, 31, 32
…… Stopper, 33 …… Pin, 34 …… Shaft hole, 35-37 ……
Pin, 38 …… Cylinder rod, 39 …… Pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A mounting bracket attached to a tip of an arm, a main bucket rotatably mounted on the tip of the arm together with the mounting bracket, and an auxiliary bucket which opens and closes in pair with the main bucket. An opening / closing link for opening and closing the auxiliary bucket in response to the movement of the main bucket driven by a cylinder, wherein the mounting hardware is formed in a box shape in accordance with the tip of the arm. In addition, the mounting bracket has a front end axially attached to a tip end hole of the arm, and a rear end of the arm through a bush slidable through a long hole formed in a side plate of the mounting bracket. The gripping bucket device, wherein the auxiliary bucket is rotatably mounted on a bottom of the mounting hardware so as to be rotatably mounted on an intermediate hole.