JPH04312626A - Underwater traveling dredging equipment - Google Patents

Abstract

PURPOSE:To suppress water pollution due to splashed sandy mud S, and prevent bottom soil from being devasted, when the sandy mud S deposited on the water bottom B of a harbor, a dam, a river, or the like is dredged. CONSTITUTION:At the front end of an internal shell of a double shell body consisting of an external shell 7, and the internal shell having a slit, a scraping-up chamber 10 widened to the side is formed, and a scraping-up screw 11, for scraping up sandy mud S is set. A space between the external shell 7 and the internal shell is set to be the suction chamber of the sandy mud S, and to the suction chamber, the suction pipe 14 of a dredging pump 13 is connected, and the internal shell is provided with a feeder for carrying rubble aggregates C to the rear side. Then, near the rear end of the feeder of the internal shell, a dredging machine 4 with an aggregate dispersing port 23 opened for dispersing the carried rubble aggregates is mounted on an underwater traveling truck 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater dredging device used for dredging muddy sand deposited on the bottom of a harbor, dam, river, lake, etc.

0002

[Prior Art] Conventionally, as a dredging device, generally
As shown in the figure, a ladder 51 is installed on a barge 50 so that it can be raised and lowered by a crane 52, and this ladder 51 is equipped with a circulating endless chain belt 53 and a bucket 54 to continuously remove mud and sand S accumulated on the water bottom B. A device with a scooping mechanism is used.

However, in such dredging equipment, the rudder 5
When scooping up the accumulated mud and sand S from the lower end of the bucket 54, there was a problem in that the mud and sand S flew up and floated in the water, causing water pollution. In addition, dredging equipment is used to remove mud and sand.
Removal of the soil exposes the bottom soil and makes it easier to be dredged by running water.
It was also a factor in the deterioration of the subsoil.

0004

[Problems to be Solved by the Invention] The present invention solves these problems in dredging equipment, and is capable of suppressing water pollution caused by mud and sand being thrown up during dredging, and also preventing deterioration of the subsoil. The purpose is to provide dredging equipment.

[0005]

[Means for Solving the Problems] In the present invention, a raking chamber that expands laterally is formed at the front end of the inner cylinder of a double cylinder body consisting of an outer cylinder and an inner cylinder having a slit, to remove muddy sand. A raking screw is provided for raking, and the space between the outer cylinder and the inner cylinder is used as a suction chamber for mud and sand, and the suction pipe of the dredging pump is connected to this suction chamber, and the inner cylinder is equipped with a feeder for transporting rough stones backward. An underwater traveling dredging device is constructed by mounting a dredging machine with a stone scattering port for scattering the transported rough stones near the rear end of the feeder in the inner cylinder on an underwater traveling trolley.

[0006]

[Operation] During dredging work, the submersible dredging device uses a submersible cart to travel on the bottom of the water, scrapes up accumulated mud and sand with a scraping screw, and transports this mud and sand through a suction chamber with a dredging pump. The coarse stones contained in the mud and sand are separated by slits, transported backwards by a feeder, and scattered to the bottom of the water from the stone scattering port.

[0007]

[Example] Fig. 1 is a side view of an underwater dredging device which is an embodiment of the present invention, Fig. 2 is a cross-sectional view showing the configuration of the dredging machine, and Fig. 3 shows the operating state of the submersible dredging device. It is an explanatory diagram. In this embodiment, the underwater dredging device 1 includes an underwater traveling bogie 3 equipped with crawler tracks 2 driven by a driving motor 34.
At the top, the rear end of the dredging machine 4 is pivotally supported by a foot pin 5, and a levying cylinder 6 is installed between the underwater vehicle 3 and the dredging machine 4 so that the dredging machine 4 can be undulated.

As shown in FIG. 2, the dredging machine 4 has a double cylindrical body consisting of an outer cylinder 7 and an inner cylinder 9 having a slit 8, and has a raking chamber that expands laterally at the front end of the inner cylinder 8. 10 and a scraping screw 11 is provided, a suction chamber 12 for mud and sand S is provided between the outer cylinder 7 and the inner cylinder 8, and a dredging pump 13 is installed in this suction chamber 12.
A suction pipe 14 is connected thereto. The scraping screw 11 is
The left side is configured with a left-handed screw, and the right side is configured with a right-handed screw, and is driven by a raking motor 15 so that muddy sand S accumulated on the water bottom B can be raked into a central receiving port 16. The muddy sand S collected into the receiving port 16 passes through the slit 8 from the suction chamber 12 through the suction pipe 14, is sucked into the dredging pump 13 driven by the pump prime mover 17, and is discharged into the discharge pipe 18. A discharge hose 21 is installed between the discharge pipe 18 and a tank 20 of the carrier ship 19, and the mud and sand S discharged from the dredging pump 13 is discharged to the tank 20. Discharge hose 2
1 is suspended from a barge 32 by a hanging rope 36.

In addition, the inner cylinder 9 is provided with a feeder 22 for conveying the coarse stones C separated from the muddy sand S by the slit 8 to the rear, and the coarse stones C that have been conveyed are placed near the rear end of the feeder 22 in the inner cylinder 9. A stone sprinkling port 23 is opened for scattering. The feeder 22 is a screw feeder, and a stirring blade 25 protruding into the suction chamber 12 is provided from the rear of a drive shaft 24 of the feeder 22 . The drive shaft 24 of the feeder 22 is rotated by a feeder prime mover 28 via a small gear 26 and a large gear 27, and the feeder 22 conveys the rough stones C backward to the stone spout 2.
At the same time, the stirring blades 25 stir the mud and sand S in the suction chamber 12 to facilitate suction into the dredging pump 13.

[0010] The front part of the underwater vehicle 3 is provided with an illumination light 29 and an underwater television camera 30, and the rear part of the underwater vehicle 3 supplies power to the underwater dredging device 1 and receives control signals. A power control cable 31 for transmitting and receiving is connected from a control panel 37 to a generator 33 installed on a barge 32. The power control cable 31 is suspended from a barge 32 by a chain 35.

[0011] During dredging work, the underwater traveling dredging device 1
The driving motor 34 is driven to drive the underwater traveling trolley 3 on the water bottom B, and while the undulating cylinder 6 is expanded and contracted to erect the dredger 4, the raking screw 11 is used to scrape up the accumulated mud and sand S. S is transported from the suction chamber 12 to the tank 20 of the carrier ship 19 by the dredging pump 13. At this time, since the muddy sand S is conveyed from the dredging pump 13 through the discharge hose 21, it does not fly up into the water and become suspended in the water, causing water pollution. The coarse stones C contained in the muddy sand S are separated by the slit 8 and transported backward by the feeder 22, and then sent to the stone scattering port 2.
Spray from 3 to the bottom B of the water. The large lump G that cannot be transported is removed from the machine by the scraping screw 11 to prevent damage to the machine body. When dredging highly concentrated sludge, the feeder 22 is reversed and water is sent from the stone scattering port 23 to the raking chamber 10 to reduce the concentration and facilitate dredging. The operation of the underwater traveling dredging device 1 is performed by the operator using the underwater TV camera 30 to capture the underwater bottom B.
While monitoring the video on the barge 32, the control panel 34 is operated to perform remote control.

In this embodiment, a generator 33 and a control panel 34
are installed on the barge 32 to send the mud and sand S to the carrier ship 19, but these facilities can also be installed on the ground and controlled from the ground to transport the mud and sand S to the ground. Moreover, the remote control means may utilize wireless.

[0013]

[Effects of the Invention] As explained above, the underwater dredging device of the present invention quickly scrapes mud and sand during dredging, sucks it up, and transports it through the discharge hose, thereby preventing water pollution caused by the mud and sand flying up. be able to. In addition, since rough stones are scattered on the bottom of the water during dredging, it is possible to prevent the bottom soil from becoming dilapidated.

[Brief explanation of drawings]

FIG. 1 is a side view of an underwater traveling dredging device that is an embodiment of the present invention.

FIG. 2 is a sectional view showing the configuration of a dredging machine.

FIG. 3 is an explanatory diagram showing the operating state of the underwater dredging device.

FIG. 4 is an explanatory diagram of a conventional dredging device.

[Explanation of symbols]

1 Underwater dredging equipment ３　　　　　　　　　　　Underwater traveling trolley 4 Dredging machine 7 Outer cylinder 8 Slit 9 Inner cylinder 10　　　Kayori room 11 Screw 12 Suction chamber 13 Dredging pump 14 Suction pipe 22 Feeder 23　　　Makishiguchi C Rough stone S Mud sand

Claims (1)

[Claims] Claim 1: A double cylindrical body consisting of an outer cylinder and an inner cylinder having a slit, and a raking screw for forming a raking chamber expanding laterally at the front end of the inner cylinder and raking mud and sand, A suction chamber for mud and sand is provided between the outer cylinder and the inner cylinder, and a suction pipe of a dredging pump is connected to the suction chamber, and a feeder for conveying rough stones to the rear is provided in the inner cylinder. This is an underwater dredging device in which a dredging machine with a scattering port for scattering the transported rough stone is mounted near the rear end of the feeder on a submersible trolley.