JPH0424332A - Ditch excavating method and bucket used for this method - Google Patents

Abstract

PURPOSE:To improve the working efficiency by providing a V-shape scraping blade on the side wall of a truncated pyramid form bucket container with a relatively small volume, and installing it to a working machine such as a back hoe. CONSTITUTION:At the side wall 1b of a truncated pyramid form bucket container 1 of a relatively small volume, a V-shape scraping blade 2 is provided. Then the bucket container 1 is installed to an excavation arm B of an excavation machine A such as a back hoe. And, a ditch D is excavated by scraping the side wall D1 with the scraping blade 2, while digging down gradually with the bucket container 1. Consequently, a ditch can be excavated efficiently and safely.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention particularly relates to a method suitable for excavating trenches in reclaimed land such as wetlands, and a bucket used therein.

(Conventional technology) When creating agricultural land such as reclaimed land, it is necessary to excavate a drainage ditch with a constant cross-section (for example, a trapezoidal cross-section trench with a depth of 1 m to 2 m) in wetlands or muddy areas. Excavation machines such as backhoes are used to efficiently carry out such work.

(Problems to be Solved by the Invention) When using the above conventional means, the bucket attached to the excavation arm is stuck to the sticky soil, which not only requires a large amount of power for the work, but also requires the bucket to be moved in some cases. When pulling up soil, the bucket may not lift and the backhoe body tends to fall over.Also, soil removal using only the bucket is too soft and it is not possible to obtain a beautiful groove cross-sectional shape, which requires modification. There is a problem that smooth progress of work cannot be achieved.

The present invention aims to provide a trench excavation method that can suitably solve the above-mentioned problems, and a bucket used therein.

(Means for Solving the Problems) The trench excavation method of the present invention forms a generally truncated pyramid-shaped container with a relatively small volume consisting of a front wall, side walls, rear wall, and bottom wall, and a soil scraping blade is installed from the side wall. A bucket extending in an inverted eight shape in any direction is attached to an excavating arm of an excavating machine, and a groove of an arbitrary constant depth is formed by the soil removal operation of the bucket.

(Function) Since the bucket is generally truncated pyramid-shaped and has a relatively small volume, the soil removal operation is easy, and the action of the inverted cross-shaped soil scraping blades provided on both sides allows the bucket to be adjusted to the desired depth. The trench will be excavated properly.

(Example) Hereinafter, specific examples of the present invention will be described in detail based on the drawings.

FIG. 1 is a front view of a bucket according to the present invention, and FIG. 2 is a perspective view of the bucket seen from the rear.

In the figure, 1 is a bucket container approximately shaped like a truncated pyramid, and is composed of a front wall 1a, side walls 1b, lb, a rear wall 1c, and a bottom wall 1d. ,
Further, the side walls 1b, 1b are bent along each side of the front wall 1a at a point p near the joining point with the front wall la. However, the volume ratio is relatively small, for example, the front part of the upper opening is 400 cm, the rear part is 160 cm,
Front and rear walls dark path Hc is 70cm, and container depth d is 80cm.
It is done to a certain extent. In this case, it is preferable that the front wall 1a and the side walls 1b and 1b be made of a hard material and have sharp edges, and the inclination angle θ of the side walls 1b and 1b should match the inclination of the side walls of the trench to be excavated. .

2 and 2 are earth scraping blades made of plate members, and are extended from the side wall 1b1b to each side in an inverted eight shape in order to follow the slope of the side wall of the trench to be excavated, and a supporting member 3 is used to firmly fix the blades. .3 is installed diagonally, and this and the soil scraping blade 2
．． The soil scraping blade 2.2, which is connected to the earth scraping blade 2.2 by a connecting member 4, is made of a hard material and has a sharp leading edge, and its dimensions are, for example, a width e. is 20 cm, length l is 350 cm, etc.

5 and 5 are fastening pieces provided with a through hole 5a, and are attached to the rear wall 1c.
It is fixed to the back of the machine and is intended to be attached to the digging arm of excavating machines such as backbows and power shovels.

Next, an example of construction in which the above-mentioned bucket is used to excavate a trench in a wetland or muddy area will be explained.

First, as shown in FIG. 3, a bucket is attached to the excavation arm B of the backhoe via the attachment piece 5.5. In addition, the soil scraping blade 2 is used to display the depth of the trench to be excavated.
A suitable mark E is attached in advance at a corresponding position. Triangular track shoes C, which are excellent in running performance in wetlands, are used for the running device of the backhoe A, if necessary.

After that, backhoe A is operated and a trench is excavated while removing soil with a bucket. That is, while moving the backhoe A back and forth as necessary, move the bucket along the two-dot chain line m in FIG.
As shown by 1 to m3, the trench is excavated in a stepwise manner from directly above the planned trench position downward.

In this work, when sowing soil at the bottom of a trench, the bucket is lowered to the bottom of the trench, and then placed in the position shown in Figure 5 (a) and (b) in the direction of the arrow f along the trench. This allows the robot to move. Q front wall 1
The walls 1b and 1b are inclined in the direction of the arrow f, that is, in the direction of movement of the bucket, and a relief is formed at the lower part p1 or the side part p2, and the adhesion between the container 1 and the soil is suppressed. . On the other hand, the soil scraping blade 2.2 scrapes the side walls D1, D1 of the trench with its leading edge, and the scraped soil falls along the side walls D1, D1 of the trench to the bottom of the trench. The fallen soil will eventually be discharged to the outside of the trench in the container 1, and on the other hand, the soil will be removed from the side wall D after being scraped.
1. Dl is made into a flat finished surface by the trowel action of the soil scraping blade 2.2.

When the groove reaches a certain depth, the mark E will coincide with the ground surface, but the driver visually determines that the groove depth has reached the planned value and moves to the next position. Like drilling.

(Effects of the Invention) As described above, according to the present invention, it is possible to freely excavate a large trench as desired with a bucket of relatively small volume, the required power is small, and the excavating machine is stable. This also eliminates the possibility of harm to one's sexuality, and allows one to perform work rationally and efficiently.

[Brief explanation of drawings]

Fig. 1 is a front view of the bucket according to the present invention, Fig. 2 is a perspective view of the bucket seen from the rear, Fig. 3 is a diagram showing the working situation, and Fig. 4 is an explanatory diagram showing the progress of excavation. , FIG. 5 is an explanatory diagram of the process of raking up the ± of the groove bottom, (a) is a view seen from the side, and (b) is a view seen from above. A...Backhoe, B...Drilling arm, 1...Container, 1a...Front wall, 1b...Side wall, IC...Rear wall,
1d...Bottom wall, 2...Scraped wing. Applicant Ohno Construction Co., Ltd. Agent Patent attorney Hiromoshi Okuma

Claims (2)

[Claims] (1) A truncated pyramid-shaped container with a relatively small volume is formed by a front wall, a side wall, a rear wall, and a bottom wall, and a bucket is formed by extending scraping blades laterally in an inverted eight shape from the side wall. A trench excavation method characterized in that the bucket is attached to the excavation arm of an excavation machine such as a backhoe, and a trench of a given constant depth is formed by the soil removal operation of the bucket. (2) A truncated pyramid-shaped container with a relatively small volume is formed by a front wall, a side wall, a rear wall, and a bottom wall, and scraped blades are extended laterally from the side wall in an inverted eight shape. A bucket used for digging trenches.