JPH0258640A - Execution of underwater work and device therefor - Google Patents

Abstract

PURPOSE:To easily carry out working by driving an underwater hydraulic unit consisting of a hydraulic motor driven by an electric motor from an electric power source on the land or on a vessel and operating an underwater hydraulic driving crane in the vicinity of a working part at the top edge part of the crane which is driven by the unit. CONSTITUTION:Pressurized oil is supplied into an underwater hydraulic driving crane 2 by driving an underwater hydraulic unit 14 equipped with a hydraulic motor driven by an electric motor from an electric power source on the land or on a vessel. Working is carried out through a suction port 10 installed at the top edge part 11 of the crane 2 by allowing a diver to operate a hydraulic control valve 13 in an operation part installed at the top edge part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an underwater work construction method and an apparatus therefor, which enable underwater work to be easily performed using an underwater hydraulically driven crane.

[Conventional technology]

Conventionally, to perform underwater work, a diver would go underwater and grasp the end of a hose connected to a land-based suction pump, or use a hydraulic hose to pump pressure oil from a land-based hydraulic pump. It was guided to hydraulic equipment and operated by the diver.

[Problem to be solved by the invention]

In the conventional work performed by divers, as the water depth increases, the weight of the air hose becomes heavier, making it difficult to operate it freely, and there is a problem that the work cannot be carried out at a depth of about 30 m or more. Even when hydraulic equipment is operated using hydraulic hoses, the loss of hydraulic pressure increases as the water gets deeper, and to prevent this, the equipment must have a sturdy structure that can withstand water pressure. The large size and therefore the large weight make it difficult to operate, and there is also the problem that work cannot be carried out at a depth of about 30 m or more. This invention aims to solve these problems.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention drives an underwater hydraulic unit 14 consisting of an electric motor-driven hydraulic motor 20 by a power source on land or on a ship.
An underwater work implementation method in which the underwater drive crane 2 is operated near the working part of the tip 11 of the underwater drive crane 2 driven by the underwater hydraulic system. Drive crane 29
An underwater work construction method that operates an electric motor in a pressure equalizing container 18 filled with oil and an oil storage tank in a pressure equalizing container 26.
Underwater hydraulic drive cranes 2, 2 driven by an underwater hydraulic unit 14 connected to a hydraulic morph 20 communicated via
Underwater work construction equipment consisting of 9, underwater hydraulic drive crane 2
．． A suction hose, an air lift pump, a rock cutter or an earth removal blade are attached to the tip II and 44 of the boom 4゜43, and a crawler 28 is attached to the underwater hydraulic drive crane 2゜29. Underwater work construction equipment and underwater hydraulic A working attachment is attached to the tip 44 of the boom 43 of an underwater hydraulically driven crane 29 driven by the unit 14, a crawler 28 is attached to the crane 29, and a sensing device is provided, and this sensing device can be remotely operated on land or on a ship. This means that the underwater work construction equipment connected to the equipment 34 is used.

[For production]

The operation of this invention will be explained with reference to Examples.

In FIG. 1, in order to operate the underwater hydraulic crane 2 on the horizontal base 1 installed on the bottom of the water, the hydraulic motor 20 is operated by driving the electric motor of the underwater hydraulic unit 14 from a power source on land or on a ship. In this state, the diver 12 rides on the tip of the boom 4 of the underwater hydraulically driven crane 2 and operates the hydraulic control valve of the operation unit 13 to move the boom 4 back and forth, up and down, and left and right to suction the air lift pipe 9. By positioning the mouth 10 at a predetermined position, earth and sand on the water bottom can be sucked through the suction mouth 10 and discharged onto land.

At this time, in FIG. 2, as the underwater hydraulic unit 14 becomes deeper, the pressure equalizing container 18 made of a rubber bellows type bag is compressed by water pressure, and the pressure becomes equal to the oil sealed in the housing 16. It does not break down even under large water pressure, and its form does not change in any way. In this case, the spring 19 serves to facilitate compression of the pressure equalizing container 18. Further, the pressure equalizing container 26 works to equalize the pressure between the hydraulic motor 20 and the oil in the oil storage tank, and together with the pressure equalizing container I8, the pressure inside and outside the container is made equal regardless of the water depth.

In FIG. 3, in order to operate the underwater hydraulically driven crane 29, information from a monitor camera and a boom attitude sensor in a box 31 containing a sensing device is transmitted to a work monitoring television 36, an attitude monitoring television 37, and a remote control device 34. The tip part 4 of the boom 43 is grasped by the monitor panel 38, and the remote control switch 39 is operated based on this.
4, the rock cutter 45 and other attachments are activated to carry out underwater work by remote control.

〔Example〕

Embodiments of the invention will be described with reference to the drawings.

Figure 1 shows the underwater work construction equipment, with horizontal base 1
A base 3 of an underwater hydraulically driven crane 2 is fixed on top, and a base 5 of a boom 4 is installed on the base 3 so as to be horizontally rotatable.
The boom 4 following this boom 4 is pivotably mounted by a hydraulic piston 6, and the boom 4 further ahead is rotatably pivotably mounted by a hydraulic piston 7, and an air lift vibe 9 connected to an air lift host 8. is attached so that its length can be expanded and contracted, and the tip part I has a suction port 10 at the tip of the air lift vibe 9.
A hydraulic control valve operating section 13 is installed in I so that the diver I2 can operate it. An underwater hydraulic unit 14 is installed on the horizontal base 1, and is connected to a hydraulically driven crane 2 through a hydraulic hose 15 from its hydraulic inlet/outlet.

FIG. 2 shows details of the underwater hydraulic unit 14.
6 is a housing filled with insulating oil and has a built-in electric motor, and is connected to a power cable 17, which communicates with an external pressure equalizing container 18 consisting of a bellows-shaped bag made of rubber. It is designed to be pressed. The electric motor in the housing 16 drives a hydraulic motor 20 and communicates from the pressure oil outlet 22 to the hydraulic hose 15 via the pressure oil outlet vibrator 21, and the pressure oil returned from the hydraulically driven crane 2 is transferred from the hydraulic hose 15 to the pressure oil return port. The pressure oil returns to the hydraulic motor 20 from the return lever 24 via the line 23. Reference numeral 25 denotes an oil pressure detection cable, and a pressure equalizing container 26 made of a rubber bellows type bag is filled with insulating oil, and a spring 27 presses the pressure equalizing container 26 with an appropriate pressure.

FIG. 3 shows the situation of remote control of an underwater hydraulic crane driven by an underwater hydraulic unit, in which an underwater hydraulic crane 29 is mounted on a crawler 28, and an underwater hydraulic unit 14 and an underwater hydraulic crane are mounted on a base 30. A light 32 of a box 31 containing sensing devices such as a monitor camera and a boom attitude sensor is provided, and a remote control device 34 is connected to the underwater hydraulic unit 14 and a generator 33 installed on land or on a ship. They are connected by a cable 35. Remote control device Z34 is work monitoring TV s 6
, an attitude monitoring television 37, a monitor panel 38, a remote control switch 39, various meters 40, a switchboard 41, etc., and the pressure oil from the underwater hydraulic unit 14 is supplied to the vibrator 4.
2 to the submersible hydraulically driven crane 29, and various work attachments such as a rock cutter 45, the tip of a suction hose, an air lift pump, and an earth removal blade can be attached to the tip 44 of the boom 43.

In FIG. 1, pressure oil is supplied to the ice hydraulic drive crane 2 by driving an underwater hydraulic unit 14 having a hydraulic motor 20 driven by an electric motor from a power source on land or on a ship, and the tip of the crane 2 is supplied with pressure oil. The diver 12 operates the hydraulic control valve of the operation part 13 provided at the tip 11 to position the suction port 10 attached to the diver 11 at the desired work site and perform work such as discharging sediment from the bottom of the water. be able to.

In FIG. 3, a submersible hydraulic unit 1 with a hydraulic motor 20 on a base 30 of a submersible hydraulically driven crane 29 by means of a remote control device 34 communicating with a generator on land or on a ship.
4 to supply pressure oil to the underwater hydraulically driven crane 29, and also to move the boom 43 of the underwater hydraulically driven crane 29 back and forth by operating the remote control switch 39 of the remote control device 34 according to information from the sensing device.
It can be moved up and down, left and right, and operated to operate the rock cutter 45 attached to its tip 44 and other various attachments.

〔Effect of the invention〕

The invention as claimed in claim 1 is characterized in that an underwater hydraulically driven crane is installed underwater, which is driven by an underwater hydraulic unit consisting of a hydraulic motor driven by an electric motor, and a diver operates the crane near the working part, so that a large weight can be lifted off. Since the air hose can be operated accurately by mechanical force, the water depth can be adjusted from 70m to 10m.
It is possible to easily and accurately carry out work at a depth of 0 m or more, and the invention of claim 2 allows a diver to control an underwater hydraulic unit by a remote control device installed on land or on a ship, and operate an underwater hydraulically driven crane. Since the operation can be performed without being affected by the water depth, work can be carried out at deep water depths without being affected by the water depth.The invention of claim 3 houses the electric motor in the pressure equalization container and connects the oil in the oil storage tank with the pressure equalization container. Therefore, it is possible to obtain an apparatus that can perform work at a deep water depth without being affected by a heavy pressure of 100 ton/n (or more) at a water depth of 100 m or more, and claims 4 to 7
The invention of claim 8 allows various types of work to be performed by attaching attachments for various types of work to the tip of the boom of an underwater hydraulically driven crane, and the invention of claim 8 allows freedom to be performed by attaching a crawler to an underwater hydraulically driven crane. The invention of claim 9 can provide an apparatus for implementing the method of claim 2.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, so FIG. 1 is a front view seen through the water, FIG. 2 is a plan view of the underwater hydraulic unit,
FIG. 3 is a perspective view of the land portion and the underwater portion.

Claims (1)

[Claims] 1. An underwater hydraulic unit (14) comprising an electric motor-driven hydraulic motor (20) is driven by a power source on land or on a ship;
An underwater work construction method in which the crane (2) is operated near the working part of the tip (11) of the underwater hydraulic drive crane (2) driven by the underwater hydraulic unit (14). 2. An underwater work construction method in which an underwater hydraulic unit (14) is controlled by a remote control device (34) installed on land or on a ship to operate an underwater hydraulic drive crane (29). 3. A submersible hydraulic unit (1) that connects an electric motor in a pressure equalizing container (18) filled with oil and a hydraulic motor (20) communicating with an oil storage tank via a pressure equalizing container (26).
Submersible hydraulically driven cranes (2) and (29) driven by
) Underwater work construction equipment. 4. Booms of underwater hydraulic drive cranes (2) and (29) (
4) The underwater work construction apparatus according to claim 3, wherein suction hoses are attached to the tips (11) and (44) of the parts (4) and (43). 5. Booms of underwater hydraulic drive cranes (2) and (29) (
4) The underwater work construction apparatus according to claim 3, wherein an air lift pump is attached to the tip portions (11) and (44) of the parts (4) and (43). 6. Booms of underwater hydraulic drive cranes (2) and (29) (
4) The underwater work construction apparatus according to claim 3, wherein rock cutters are attached to the tip portions (11) and (44) of the sections (4) and (43). 7. Booms of underwater hydraulic drive cranes (2) and (29) (
4) The underwater work construction apparatus according to claim 3, wherein earth removal blades are attached to the tip portions (11) and (44) of the blades 4) and (43). 8. The underwater work construction apparatus according to claim 3, 4, 5, 6 or 7, wherein a crawler (28) is attached to the underwater hydraulic drive crane (2), (29). 9. A working attachment is attached to the tip (44) of the boom (43) of the underwater hydraulic drive crane (29) according to claim 3, and the crane (29) is equipped with a crawler (28).
An underwater work construction device that is equipped with a sensing device and connected to a remote control device (34) on land or on a ship.