JPS6172129A - Bucket dredger with cutter - Google Patents

Abstract

PURPOSE:To exploit resources present very deep in a ground, by a method wherein cutter wheels are mounted to both ends of the rotary shaft of a bucket conveyor, and discharge ports, through which excavated soil is discharged to the passage side of buckets for conveyance, are formed. CONSTITUTION:Cutter wheels 7 are mounted to both ends of a rotary shaft 8 of a bucket conveyor at the forward end of a ladder 3. A dredging work is effected through rotation of buckets 6 for conveyance and cutter wheels 7, a ground on a sea bottom 2 is excavated. Excavated soil is discharged through discharge ports 11 in the inner walls of a bucket 9 for excavation into a space between the cutter wheels 7 where the buckets 6 for conveyance pass, and the excavated soil is scooped by the buckets 6 to convey the soil to a ship. This enables sharp reduction of the weights of the bucket for conveyance and the ladder, and enables reduction of a driving power for the bucket conveyor.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dredger, and in particular, the present invention relates to a dredger that excavates from the seabed to
) Regarding a bucket dredger with a cutter equipped with a bucket conveyor for conveying to the top.

[Conventional technology]

In a conventional bucket dredger, as shown in FIG. 4, a rudder 3 extending to the seabed 2 is swingably attached to a hull 1.

A plurality of buckets 4 are connected in an endless manner so as to move along the outer periphery of the rudder 3 from the seabed 2 to above the hull 1, thereby forming a bucket conveyor.

These buckets 4 are moved along the outer periphery of the rudder 3 by the rotation of a bucket drive gear 5 provided at the base end of the rudder 3, and as the buckets 4 move, the seabed at the bottom end of the rudder 3 2, bucket 4
excavates earth and sand, scoops it up, and transports it from the seabed 2 to the top of the ship's hull 1.

[Problem that the invention seeks to solve]

However, in such a conventional bucket dredger, in order to use the buckets 4 to excavate the hard ground on the seabed 2, it is necessary to make each of the buckets 4 a heavy structure, which increases the weight of the entire bucket conveyor. There is a problem with getting thicker.

In particular, in a bucket dredger for the purpose of mining resources in deep sea areas, a large number of buckets 4 are connected, so the weight of the rudder 3 and buckets 4 becomes very large, while the weight of the rudder 3 and buckets 4 becomes very large. There is a problem in that the power for the dredger and the hull 1 supporting the rudder 3 become larger, increasing the construction cost of the dredger.

The present invention aims to solve these problems by reducing the weight of the bucket and the power required to drive it, thereby making it possible to mine resources at great depths at low cost. The purpose is to provide a bucket dredger with a cutter.

[Means for solving problems]

This bucket dredger with a cutter of the present invention has the following features:
Ship f4. A bucket conveyor consisting of a ladder extending from the bottom to the seabed, and a plurality of transport buckets connected in an endless manner along the outer periphery of the ladder so as to be able to move from the seabed to the shipboard; In the bucket dredger, cutter wheels each having a plurality of excavation buckets protruding from the outer periphery are attached to both ends of the rotary shaft of the bucket conveyor at the tip of the rudder, The transport bucket is characterized in that a discharge port is formed in the inner wall of the transport bucket and is attached to the transport bucket so as to discharge the excavated soil to the passage section side of the transport bucket.

[For production]

In the bucket dredger with a cutter of the present invention described above, by rotating the cutter wheel and the bucket conveyor while moving the rudder from side to side, submarine ground is excavated with the excavation bucket of the canter wheel, and this excavated soil is used for excavation. The waste is discharged from the outlet of the bucket to a transport bucket, and dredging work is carried out.

〔Example〕

Hereinafter, a bucket dredger with a cutter as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a side view showing an enlarged tip of the rudder, and Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1. , FIG. 3 is a cross-sectional view taken along the line ■-■ of FIG.

Figure 951 shows small r, l:'>, hull 1 (see Figure 11).
A ladder 3 extending to the seabed 2 is swingably attached to the ladder 3, and a plurality of transport buckets 6 are connected in an endless manner so as to move along the outer periphery of the ladder 3 from the seabed 2 to above the hull 1. A bucket conveyor is constructed.

The bucket 6 for conveying the water is a bucket that serves as a drive mechanism for a bucket conveyor provided at the end of the ladder 3.
It is configured to move along the outer periphery of the ladder 3 by a JA moving carriage 5 (see FIG. 11).

- As shown in Fig. 1.2, a plurality of excavation buckets 9 are protruded from the outer circumference at equal intervals on both sides of the rotary shaft 8 of the bucket conveyor at the tip of the ladder 3. These cutter wheels 7.7 rotate via the shaft 8 in rotation 1 as the transport bucket 6 moves, and the space between them is fixed to the transport bucket. 6 can pass through.

The excavation bucket 9 has a discharge port in its inner wall, as shown in FIGS. 11 is formed and attached.

In addition, the upper surface of Ladder 3 was covered with waves while the excavated soil was being transported.

A cover 10 is provided to cover the entire transport bucket 6 in order to prevent excavated soil from spilling due to tidal currents, movement of the ladder 3, etc. and polluting the sea surface.

Since the cutter-equipped bucket dredger of the present invention is constructed as described above, dredging work is performed by moving the rudder 3 from side to side and rotating the muffle conveyance bucket 6 and cutter wheel 7.

At this time, the ground of the seabed 2 is excavated by the excavation bucket 9 attached to the outer periphery of the cutter wheel 7, and this excavated soil is delivered to the discharge port 1 formed on the inner wall of the excavation bucket 9.
1 to the passage space of the transport bucket 6 between the cutter wheels 7 and 7, the transport bucket 6
It is scooped up and transported onto the hull 1.

In this way, the transport bucket 6 only scoops up the excavated soil excavated by the excavation bucket 9 and transports it onto the hull 1, so the excavation bucket 9 has the strength to excavate hard ground. It is sufficient to have it, and it is not necessary for the transport bucket 6, so that the transport bucket 6, the connecting portion of the transport bucket 6, and the ladder 3 can be made light in structure. Therefore, it is possible to reduce the construction cost of the bucket dredger.

In particular, in bucket dredgers that mine resources at great depths, the heavy electrical power of the transport bucket 6 and rudder 3 is significantly reduced, and the driving power of the bucket conveyor (Mr.
It can be completed.

〔Effect of the invention〕

As described in detail below, according to the bucket dredger with a cutter 11a of the present invention, there is a rudder extending from the hull to the seabed, and a structure on the outer periphery of the rudder so that it can be moved from the seabed to the shipboard with a mouth. In a bucket dredger comprising a plurality of conveyor buckets connected in an endless manner, and a mechanism for driving the bucket conveyor, at both ends of the rotating shaft of the bucket conveyor at the tip of the rudder, A cutter wheel protruding from the outer periphery of each of the plurality of excavation buckets 7) is attached, and the excavation buckets transfer the excavated soil to the passage portion 111 of the transportation bucket.
With a simple structure in which a discharge port is formed in the inner wall of the container and the container is housed in order to discharge into the container, effects and advantages similar to those of a dog can be obtained.

(1) Since the transportation bucket and ladder can be made light in structure, the construction cost of the bucket dredger can be reduced; The weight of the bucket conveyor is significantly reduced, and the power required to drive the bucket conveyor can also be reduced.

(2) Since the shape and strength of the excavation bucket can be easily changed depending on the hardness of the seabed ground, dredging efficiency can be improved.

[Brief explanation of the drawing]

□1-3゜11, □. -Aka, 1. . Figure 1 is an enlarged side view of the tip of the rudder, Figure 2 is a sectional view taken along ■-n in Figure 1, and Figure fIS3 is a cross-sectional view of Figure 1. [[[-,'l is a sectional view, and FIGS. 1 and 1 are side views showing a conventional dredger. 1. Hull, 2. Seabed, 3. Rudder, 5. Bucket drive gear as a bucket conveyor drive mechanism, 6.
・Transportation bucket, 7. Coffter wheel, 8. Rotating shaft, 9. Excavation bucket, 10. Cover, 11.
・Outlet 6 Sub-agent Patent attorney Yoshi Iinuma 4 Figure 1

Claims (1)

[Claims] A bucket conveyor consisting of a ladder extending from a ship's hull to the seabed, a plurality of transport buckets connected in an endless manner so as to be able to move along the outer periphery of the ladder from the seabed to the shipboard, and a drive mechanism for the bucket conveyor. In the bucket dredger, cutter wheels each having a plurality of excavation buckets protruding from the outer periphery thereof are attached to both ends of the rotating shaft of the bucket conveyor at the tip of the rudder, and the excavation buckets A discharge port is formed and attached to the inner wall of the transport bucket in order to discharge the excavated soil to the passage portion side of the transport bucket.
Bucket dredger with cutter.