JPH041815B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a power shovel arm attachment bucket that can be attached to a power shovel arm such as a bucket or clamshell bucket to perform excavation work vertically and horizontally. This relates to a turning device.

[Conventional technology]

Conventionally, when excavating within a section (mass) formed by driving steel sheet piles during earthworks, the earth and sand near the surface of the excavated section must first be removed, and then horizontal excavation cannot be performed, making it difficult to excavate from the outside. At that point, a small power shovel was brought into the bottom of the plot and the ground was dug.

[Problem to be solved by the invention]

Conventional excavation methods like this require time and effort to bring in and take out small power shovels, which causes high costs, are dangerous because they are operated by humans, and are not easy to work with. This excavation method was forced to be adopted because the structure of the bucket attached to the power shovel arm is unsuitable for horizontal digging, and the structure is only suitable for vertical digging by swinging vertically. This is because it was said that

Therefore, various studies were conducted on a structure that would solve the above-mentioned difficulties and enable excavation with a power shovel from the outside without having to insert steel sheet piles into the compartments formed by driving them.

[Means to solve the problem]

The above problem was solved by the inventor of the present invention by developing a bucket swing device for attaching a power shovel arm having the following structure. That is, the structure is such that the swing base mounting bracket 6, which is pivotally supported on the tip boss 2 of the power shovel arm 1, can be swung by the swing cylinder 12, and the swing base mounting bracket 6 can be swung relative to the swing base 7 to which the swing base mounting bracket 6 is fixed. A swing motor 8 is provided, and a swing board 9 connected to the swing motor 8 is pivotally supported so as to swing in a direction substantially perpendicular to the swinging direction, and the bucket swing arm 1 is attached to the swing board 9.
0 and a bucket opening/closing cylinder 11.

The mechanism that allows the swing base mounting bracket 6 and attached bucket belt 15 to swing includes the tip boss 2 of the power shovel arm 1, the retaining boss 3, the swing cylinder 12, and the swing base 7.
Preferably, a quadrilateral link is formed between them.

[Effect]

The bucket swing device for attaching a power shovel arm having such a structure can swing the bucket up and down using the swinging link 5 to excavate the bottom in a downward position, or it can be maintained in a horizontal direction. is also possible. Furthermore, the bucket cart and the like can also be turned in a direction substantially perpendicular to the swinging direction using the turning table 9 and the bucket turning arm 10. Therefore, by operating a power shovel installed on the ground outside the excavation area, a power shovel arm advances a bucket, etc. from the outside to the excavation site, and the swing motor 8 is rotated to rotate the bucket, etc. at the tip of the bucket swing arm 10. It is possible to dig horizontally by turning.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Figures 1 and 2 show a first embodiment of the present invention, with Figure 1 being a side view and Figure 2 being a bottom view of the same when equipped with a clamshell bucket. As seen in these figures, the bucket swing device for attaching a power shovel arm of the present invention is installed on a swing base 7 at the tip of a power shovel arm 1 that is bendable. This swing base 7 is a nearly circular plate body, and is attached to the power shovel arm 1 and the swing cylinder 12 via a swing link 5 by a swing base mounting bracket 6. The oscillating link 5 is a quadrilateral link in this example, and includes a swivel base mounting bracket 6, a boss 2 at the tip of the power shovel arm 1, a retaining boss 3 on the top of the boss 2, and a continuous oscillating link via link rod A16. Cylinder rod tip 4 and
It is constituted by a link rod B17 connected to the swing base mounting bracket 6 by a pin 18.
A swing motor 8 is provided on the swing base 7 to which the swing base mounting bracket 6 forming the swing link 5 is fixed, and the swing motor 8 is connected to the swing board 9 to rotate the swing board 9. The oscillating link rotates in a direction substantially perpendicular to the oscillating direction of the oscillating link. A swivel joint 13 for a hose is provided at the center of the turning table 9. and,
This lathe 9 is provided with a bucket revolving arm 10 and a bucket opening/closing cylinder 11 to enable a clam shell bucket 14 provided at the tip thereof to turn and to open and close.

3 and 4 show a second embodiment of the present invention, FIG. 3 is a side view when equipped with a bucket bag, and FIG. 4 is a bottom view of the same. In this example, since the bucket belt 15 has a simple structure, the overall mechanism is simple, and the bucket opening/closing cylinder 11 is provided for the swing arm 10, and the bucket belt 15 is separately provided at the tip of the swing arm 10. , is almost the same as the first embodiment except that it can rotate and swing.

〔Effect of the invention〕

Since the bucket swing device for attaching the power shovel arm of the present invention has the above-described structure, it is possible to horizontally excavate under steel sheet piles, which was previously impossible with mass excavation, and it is possible to excavate any part from the ground outside the mass. be able to. Therefore, there is no need to carry a power shovel into and out of the bottom of the excavation hole, making it possible to reduce construction costs and improve safety. Furthermore, normal usage methods such as bottom digging are also possible by the swinging motion.

[Brief explanation of drawings]

Figures 1 and 2 show a first embodiment of the present invention, with Figure 1 being a side view when equipped with a clamshell bucket cart, and Figure 2 being a bottom view of the same. Figures 3 and 4 show a second embodiment of the present invention, and Figure 3 is a side view when equipped with a bucket.
FIG. 4 is a bottom view of the same. 1...Power shovel arm, 2...Tip boss, 3
...Waiting boss, 4...Swinging cylinder rod tip, 5...
Oscillating link, 6...Swivel base mounting bracket, 7
...Swivel base, 8...Swivel motor, 9...Swivel board, 1
0...bucket rotating arm, 11...bucket opening/closing cylinder, 12...oscillating cylinder, 13...swivel joint, 14...clam shell bucket, 15...
Bucket.

Claims (1)

[Claims] 1 The swing base mounting bracket 6 that is pivotally supported on the tip boss 2 of the power shovel arm 1 is made swingable by the swing cylinder 12, and the swing motor 8 is connected to the swing base 7 to which the swing base mounting bracket 6 is fixed. and a turning table 9 connected to the turning motor 8 is pivotally supported so as to turn in a direction substantially perpendicular to the swinging direction, and the turning table 9 is provided with a bucket swing arm 10 and a bucket opening/closing cylinder 11. A bucket swivel device for attaching a power shovel arm.