JP2000234324A - Automatic laying device for underdrainage pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To completely prevent generation of puffiness in ground in a laying bedrock from starting of laying of an underdrainage pipe to completion of back filling, maintain accuracy of a gentle slope by an original laser optical system, and automatically and efficiently lay the underdrainage pipe. SOLUTION: A large sized dipping trencher or dipping plow is equipped. In that case, a box shaped pipe box 8 is connected behind the dipping trencher 1 or a dipping plow, a folding plate 3 in a V-shaped cross section is used as a bottom plate of the pipe box 8, and a weight 4 rotatively attached around a supporting shaft 5 is stored in a lower part of the pipe box 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic underdrain laying machine for automatically laying a culvert drain in a wetland in order to lower the water level in the wetland.

[0002]

2. Description of the Related Art Many automatic laying machines have been developed for laying culvert drainage pipes at a predetermined gentle slope by precisely adjusting the height of an excavator by using emission and reception of laser light.

[0003]

In conventional automatic laying machines, great care has been taken to improve the shape of the cross section of the excavation and the accuracy of elevation when laying the culvert drainage pipe. However, when laying culvert drainage pipes with an actual automatic laying machine, the culvert drainage pipes are laid in a straight line with a predetermined gentle slope at the time of laying, but irregular ground swelling occurs on the laying base immediately after laying. It was found that the culvert drainage pipes laid before the backfilling often waved up, down, left and right. The culvert drainage pipe has a relatively small diameter of about 50 to 200 mm and is a corrugated pipe with a large number of water holes. An air pool 7 is formed in a convex portion above the upper surface 6, and the drainage channel of the culvert drainage pipe 6 is significantly reduced or closed. For this reason, the drainage function of the underdrain culvert drain pipe 6 which is laid at an angle is greatly reduced.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to an automatic laying machine equipped with a large digging trencher or digging plow as a digging machine among several digging methods, and has been made to solve the above problems. It is something.

That is, the invention according to claim 1, which is directed to an automatic laying machine equipped with a large excavation trencher as an excavator, relates to an "underdrainage drain pipe equipped with a large excavation trencher and a pipe box connected to the rear thereof. The automatic laying machine is characterized in that (A) a bottom plate of a pipe box is a bent plate having a V-shaped cross section, and (B) a weight is mounted at a lower portion of the pipe box so as to be rotatable around a support shaft. The invention according to claim 2, which is directed to an automatic laying machine equipped with a large digging plow as the digging machine, includes a "large digging plow and a pipe connected to the rear thereof." In an automatic laying machine for culvert drainage pipe equipped with a box, (A) the bottom plate of the pipe box is a bent plate with a V-shaped cross section, and (B) the weight is rotatable around the support shaft at the lower part of the pipe box. Dress And a (C) automatic laying machine. Of underdrain pipe, characterized in that a large part excluding the traveling direction leading end portion of the bottom plate of the drilling plow as bent plates of V-shaped cross section. "

[0006] The invention according to claim 1 and the invention according to claim 2 are different in the type of the excavator mounted, but have a common connection of a pipe box at the rear and the structure of the pipe box in common. First, the structure of the common pipe box will be described.

[0007] The pipe box is a box in which a guide and a drive device for originally laying the culvert drainage pipe in good condition are housed. In the present invention, the pipe box is used to make the bottom plate conventionally a flat plate. Is a bent plate having a V-shaped cross section, and in addition to a conventional guide and driving device, a weight is housed so as to be rotatable around a support shaft. As a result, the ground just excavated by the excavator is compacted into a V shape by the bent plate having the V-shaped cross section, and the ground swelling does not easily occur. Since the culvert drainage pipe is laid so as to be inscribed in the V-shaped groove, the culvert drainage pipe is laid straight as designed on the laying base of the V-shaped groove without swinging up, down, left and right.

Further, the culvert drain pipe which has just been laid by the weight which is rotatably mounted on the lower part of the pipe box around the support shaft is crimped and fixed to the laying base. Is better maintained. The weight is mounted so as to be rotatable around the support shaft, so that it can freely correspond to the size of the culvert drainage pipe to be laid, and apply a predetermined gravity to the culvert drainage pipe regardless of the diameter of the culvert drainage pipe. In order to act on.

By making the pipe box have such a shape and structure, the occurrence of ground swelling of the laid base from the start of laying of the culvert drainage pipe to the completion of backfilling is completely prevented, and the original laser light system is used. Combined with maintaining the accuracy of the gentle slope, it has become possible to efficiently lay the drainage pipe under drain efficiently.

The invention according to claim 1 is different from the invention according to claim 2 in the type of the excavator equipped. The invention according to claim 1 is equipped with an excavation trencher, and the invention according to claim 2 is an excavation plow. Is equipped. In the case of a drilling trencher, the bottom plate does not exist, so the shape of the bottom plate cannot be improved.However, in the case of a drilling plow, the bottom plate exists, so by improving the shape of the bottom plate, the laying base, and the laid culvert drainage The straightness of the tube can be further ensured.

The shape of the bottom plate of the excavated plow is also improved in the invention according to claim 2, and in the invention according to claim 2, the bottom plate, which has conventionally been a flat plate as a whole, is replaced with only the front end portion in the traveling direction. Is a flat plate, and most of the subsequent plate is a bent plate having a V-shaped cross section. By setting the shape of the bottom plate of the drilling plow in this way, the ground that has just been drilled by the drilling plow is compacted into a V-shape by a bent plate having a V-shaped cross section. It will be compacted into a V-shape.

The compaction of the laid ground by the bottom plate of the pipe box and the excavated plow is usually sufficiently achieved by the weight of the pipe box and the excavated plow. However, when it is considered that the own weight is insufficient, the hydraulic pressure is applied to the pipe box or the excavated plow. To make up for the shortage of its own weight.

The automatic laying machine of the present invention is different from the conventional automatic laying machine in the shape and structure of the pipe box and the shape of the bottom plate of the excavated plow, and the accuracy of the gentle slope by the other laser light system is different. Various systems such as holding, laying of culvert drainage pipes, and simultaneous introduction of coating material are not particularly different from conventional automatic laying machines equipped with large excavation trenchers and large excavation plows.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings, together with the procedure of laying a culvert drainage pipe by the automatic laying machine of the present invention.

FIG. 1 shows a main part of the automatic laying machine according to the first aspect of the present invention, wherein (a) is a side view and (b) is a longitudinal sectional view of a pipe box. 2 (a) is a side view, FIG. 2 (b) is a longitudinal sectional view of a pipe box, and FIG. 2 (c) is a plan view.

As shown in FIG. 1, a box-shaped pipe box 8 is connected to the rear of the large excavation trencher 1, and the bottom plate of the pipe box 8 is formed of a V-shaped bent plate 3. The excavation trencher 1 is arranged at a predetermined depth and a predetermined gradient by the laser light system, and excavation of the ground is started. The trench just excavated by the excavation trencher 1 is compacted into a V-shape by a bent plate 3 having a V-shaped cross section. When the excavation of the trench by the excavation trencher 1 proceeds to some extent, the installation of the culvert drainage pipe 6 into the trench compacted into a V-shape by the V-shaped bent plate 3 is started. The weight 4 is mounted and accommodated in the pipe box 8 so as to be rotatable around the support shaft 5. The culvert drainage pipe 6, which is a polyethylene corrugated pipe, is guided to a laying position by a laying guide (all not shown) and laid.
The weight 4 is placed on the culvert drain pipe 6 just laid, and the culvert drain pipe 6 is crimped to the V-shaped trench. The weight 4 may be loaded directly on the culvert drainage pipe 6, or sometimes via a final laying guide.

As shown in FIG. 2, a box-shaped pipe box 8 is connected to the back of a large excavating plow 9, and the bottom plate of the pipe box 8 is formed of a bent plate 3 having a V-shaped cross section. The bottom plate of the excavating plow 9 is composed of a flat plate 2 at the tip and a bent plate 3 having a V-shaped cross section following the flat plate 2. The excavation plow 9 is arranged at a predetermined depth and a predetermined gradient by the laser light system, and excavation and crushing of the ground are started.
The ground that has just been excavated and crushed by the excavation plow 9 is compacted into a V-shape by the bent plate 3 having a V-shaped cross section of the bottom plate of the excavation plow 9. When the excavation and crushing of the ground by the excavating plow 9 proceeds to some extent, the laid base compacted in a V-shape is again compacted in a V-shape by the V-shaped bent plate 3 of the bottom plate of the pipe box 8, and the laid base is Laying of the culvert drainage pipe 6 is started. The pipe box 8 has a support shaft 5
The weight 4 is mounted so as to be rotatable around and stored.
The culvert drainage pipe 6 which is a polyethylene corrugated pipe is guided to a laying position by a laying guide (all not shown) and laid. The weight 4 is placed on the culvert drain pipe 6 that has just been laid, and the culvert drain pipe 6 is crimped to the laying base. As in the case of FIG. 1, the weight 4 may be directly loaded on the culvert drainage pipe 6, and sometimes may be loaded via a final laying guide.

[0018]

According to the present invention, culvert drainage pipes are laid linearly along the laid base compacted in a V-shape, and the occurrence of ground swelling of the laid base from the start of laying to the completion of backfilling is completely prevented. Therefore, the culvert drainage pipe can be automatically laid without waving in any of the upper, lower, left, and right directions while maintaining the accuracy of the gentle gradient by the conventional laser light system.

[Brief description of the drawings]

1A and 1B show a main part of an automatic laying machine according to the first aspect of the present invention, wherein FIG. 1A is a side view, and FIG. 1B is a longitudinal sectional view of a pipe box.

2 (a) is a side view, FIG. 2 (b) is a vertical sectional view of a pipe box, and FIG.
(C) is a plan view.

FIG. 3 is a vertical cross-sectional view of a culvert drainage pipe laid in a wavy manner by a conventional automatic laying machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drilling trencher, 2 ... Flat plate, 3 ... V-shaped bent plate, 4 ... Weight, 5 ... Support shaft, 6 ... Culvert drainage pipe, 7 ... Air pool, 8 ... Pipe box, 9 ... Drilling plow.

Claims (2)

[Claims] 1. An automatic laying machine for culvert drainage pipes equipped with a large excavation trencher and a pipe box connected to the back thereof, wherein (A) a bottom plate of the pipe box is a bent plate having a V-shaped cross section, and (B) a pipe is provided. An automatic laying system for culvert drainage pipes, wherein a weight is mounted at the lower part of the box so as to be rotatable around a support shaft. 2. An automatic laying machine for culvert drainage pipes equipped with a large excavating plow and a pipe box connected to the back thereof, wherein (A) the bottom plate of the pipe box is a bent plate having a V-shaped cross section, and (B) the pipe A weight is attached to the lower part of the box so as to be rotatable around the support shaft, and (C) a large part of the bottom plate of the excavation plow except for the tip in the traveling direction is a bent plate having a V-shaped cross section. Automatic laying machine for culvert drainage pipe.