JPH0739671B2 - Submarine excavator - Google Patents

Description

TECHNICAL FIELD The present invention relates to an undersea excavator used in the field of marine civil engineering and excavating rock on the seabed.

[Conventional technology]

Conventional techniques for excavating rocks on the seabed include:
(1) Excavating rocks on the seabed with a grab boat, (2) Using a grab boat after crushing with explosives, (3) Excavating with a large-diameter boring machine provided at SEP, (4) Excavating with a water jet, And so on.

[Problems to be solved by the invention]

Among the above-mentioned conventional techniques, (1) means using a grab boat has a deep water depth, hard rock excavation is difficult, the excavation position is not stable due to the influence of tidal current, and the finishing accuracy of the excavation surface is high. However, there is a problem that the lower side of the obstacle cannot be excavated and the wall surface cannot be excavated.

In addition, in the means of using the explosive and the grab boat together in (2), in addition to the problems caused by the grab boat, there is a danger of using the explosive, and it is necessary to drill a hole for loading the explosive, which is even closer. If there is an obstacle, there is a problem that it may be damaged.

In addition, (3) drilling with a large diameter boring machine results in a large SEP and high cost.
Moreover, there was a problem that it was easily affected by the tidal current and that the wall surface could not be excavated.

Furthermore, there was a problem that the drilling efficiency by the water jet of (4) had a low drilling efficiency.

[Means and Actions for Solving Problems]

The present invention has been conceived in view of the above, and it is possible to excavate deep water and hard rock regardless of tidal current, improve excavation accuracy, and excavate even on wall surfaces, and under obstacles. It is intended to provide a submarine excavator capable of excavating the underside of this obstacle if there is a certain amount of space on the side, and further capable of performing the excavation work extremely efficiently.
A main body frame having a rectangular frame shape in plan view and having expandable legs at four corners, and a moving frame having a rectangular frame shape in plan view having expandable legs at four corners A slider that is movably supported in the longitudinal direction of the body frame and that movably supports the moving frame in a direction orthogonal to the longitudinal direction of the body frame; and a slider that moves in the body frame in the longitudinal direction. From a dolly that is supported so that it is possible to move up and down on the dolly, and a drum cutter that is provided with a cover on the upper side, and a suction pipe and a suction device that are located behind the drum cutter in the direction of excavation and that suck the crushed rock by the drum cutter. Crushed rock suction means, a load header provided at the outer end of the main body frame that can be turned and moved up and down, and drive means for individually driving the movable parts. , Each of these drive means is remotely operated, and walks by alternately moving the main body frame 1 and the moving frame via a slider, and also rotationally drives the drum cutter with it lowered. While moving the dolly, the seabed rock is excavated by the drum cutter. The excavated crushed rock is sucked by a crushed rock suction device.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a main body frame, and the main body frame 1 has a rectangular frame shape in a plan view, and has a vertical three-stage configuration. And two legs in each of the four corners
Is provided. The leg 2 includes an outer cylinder 3 fixed to the frame of the main body frame 1, an inner cylinder 4 slidably fitted in the outer cylinder 3, a foot 5 provided at a lower end of the inner cylinder 4, and an outer cylinder. 3 and the inner cylinder 4 are connected to each other, and a cylinder device (not shown) for sliding the inner cylinder 4 with respect to the outer cylinder 3 is formed.

Reference numeral 6 denotes a moving frame. This moving frame 6 is also a frame body having a rectangular planar shape, and legs 7 having the same structure as that of the main body frame 1 are provided at each of four corners thereof.

A slider 8 is slidably engaged along both members 1a and 1b between an upper member 1a and a middle member 1b of the frame body having a three-stage structure of the main body frame 1 and the slider 8 and It is connected to the body frame 1 via a cylinder device 9a.
The frame member of the moving frame 6 is slidably engaged with the slider 8 in a direction orthogonal to the main body frame 1, and the moving frame 6 and the slider 8 are cylinder devices.
Connected at 9b.

A dolly for the middle stage member 1b and the lower stage member 1c of the main body frame 1
A wheel 10 is movably engaged via a wheel 11 over the entire length in the longitudinal direction. A rack 12 is provided on the lower surface of the middle member 1b of the main body frame 1 over the entire length thereof, while the carriage 10 has a pinion that meshes with the rack 12.
A hydraulic motor 14 is connected to the pinion 13. The above rack 12 and pinion 13 are trolley 10
It is provided on both sides of.

A cutter arm 15 is connected to the lower side of the carriage 10 so as to be rotatable in the vertical direction, and a drum cutter 16 is attached to the tip end of the cutter arm 15. The cutter arm 15 is vertically driven by a cylinder device (not shown). The drum cutter 16 is the cutter arm 15
It is adapted to be driven by a hydraulic motor 17 provided in the. The upper side of the drum cutter 16 is covered with a cover 18. Reference numeral 19 denotes a suction pipe located on the rear side in the excavating direction of the drum cutter 16, and this suction pipe 19 is provided on a guide rod 20 provided in parallel with the drum cutter 16 on an arm 18a rotatably provided in the cover 18 in the vertical direction. It is slidably supported, and is also screwed into a guide screw 21 provided in parallel with the guide rod 20 on the arm 18a, and the guide screw 21 is rotated by a hydraulic motor 22 so as to follow the guide rod. It is being moved. 18b is a cylinder device for rotating the arm 18a. A suction hose 23 is connected to the suction pipe 19. The other end of the suction hose 23 is fixed to the carriage 10, and a moving hose 24 is connected to this end. The moving hose 24 has a submersible pump 25 mounted on the body frame 1.
Are connected.

A swing bracket 26 having a vertical axis of rotation is provided at the outer end on one longitudinal side of the body frame 1 so as to be driven by a swing motor 27, and a load header 28 is vertically swingable on the swing bracket 26. It is freely connected. Reference numeral 29 is a cylinder device for vertically rotating the load header 28.
The roadhead 28 is configured to expand and contract.

In the figure, 30 is a depth gauge, 31 is a position measuring device, and 32 is a submersible pump.
A discharge pipe connected to the discharge side of 25 through a swivel joint 33, 34 a power supply cable, 35 an inclinometer, and 36 an electrical equipment box. The discharge pipe 32 has an appropriate length, for example, extends to the land.

The actuators such as the cylinder device and the hydraulic or electric motor can be remotely operated by known means from the ground or onboard via the power supply cable 34.

In the above structure, the main body frame 1 and the moving frame 6
Is self-supported by the legs 2 and 7 provided in each of the four positions, and its height and horizontal posture are adjusted by adjusting the lengths of the legs 2 and 7. Further, the moving frame 6 has a slider 8
Through the cylinder device 9a and the cylinder device 9a expands and contracts to move in the longitudinal direction of the body frame 1, and the other cylinder device 9b expands and contracts to move the moving frame 6 in the width direction of the body frame 1. Therefore, the legs 2 and 7 of both frames 1 and 6 are alternately contacted with the seabed and the above operation is repeated, so that both frames 1 and 6
Walks on the seabed.

Further, the drum cutter 16 is rotated by the hydraulic motor 17 and pressed against the seabed, whereby the bedrock on the seabed is excavated. Then, the excavated crushed rock is sucked by the suction pipe 19 and discharged from the discharge pipe 32. At this time, the suction pipe 19 is guided by the guide screw 21.
To reciprocate over the width of excavation by the drum cutter 16 and suck the crushed rock without exception. Drum Katsu 16 is a trolley 10
Moved by.

The wall head 37 is excavated by turning by the turning bracket 26, moving up and down by the cylinder device 29, and expanding and contracting.

The operation procedure of the seabed excavator having the above configuration and operation will be described with reference to FIGS. 6 (1) to 6 (10) and in the order of these figures.

(1) Suspend the main body by suspending it from the cable 38.

(2) Walk to the excavation position while landing on the seabed. At this time, the position measuring device 31 measures the position.

(3) Measure the water depth h with the water depth meter 30.

(4) The height is adjusted by expanding and contracting the legs 2 of the main body frame 1, and the posture is adjusted by the inclinometer 35.

(5) Start the submersible pump 25, and at the same time drum drum 16
While rotating, the cutter arm 15 is rotated to lower it to a predetermined position. At this time, the suction tube 19 is set at a predetermined position.

(6) The bogie 10 is moved forward to start the excavation, and the excavation is ended with the bogie 10 moved to the forward end.

(7) Move the cutter arm 15 upward and move the drum cutter 16
And the carriage 10 is moved backward and stopped at the rear end.

(8) Walk and move the main body frame 1. At this time, the excavated portion and the drum cutter 16 are made to overlap to some extent.

The excavation work is performed by repeatedly performing the operations (1) to (8).

(9) Walk to a position where collection is possible.

(10) Collect.

In addition to the above operation, the work of excavating the wall surface at the road head 28 is performed as necessary.

〔The invention's effect〕

According to the present invention, the whole excavator is suspended from the ship by a cable and settles on the seabed. After that, the excavation work can be performed by remote control even at a large water depth without being greatly affected by the tidal current. You can By using the drum cutter 16, the hard rock can be excavated, and the excavation accuracy can be improved because the plane excavation is possible. In addition, the road heads 28 can also excavate the wall surface with high accuracy. Furthermore, if there is a space where the excavator can enter, it is possible to excavate even if there is an obstacle above, and the excavator enters by making the drum cutter 16 project from the body frame 1 in the form of an overhang by moving the cart 10. It is possible to excavate even in places where it cannot fit.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a plan view,
2 is a side view, FIG. 3 is a front view, FIG. 4 is an enlarged side view of the suction tube portion, FIG. 5 is a view taken in the direction of arrow V in FIG. 4, and FIG. 6 (1).
~ (10) is an explanatory view showing an operation procedure. 1 is a main body frame, 6 is a moving frame, 2 and 7 are legs, 8 is a slider, 10 is a carriage, 16 is a drum cutter, 18 is a cover,
19 is a suction tube and 28 is a roadhead.

Claims (1)

[Claims] 1. A main body frame 1 having a rectangular frame shape when viewed from the top and provided with legs 2 that can expand and contract at the four corners, and a rectangular frame shape when viewed from the top surface and capable of expanding and contracting at the four corners. The movable frame 6 provided with the leg 7 and the main body frame 1 are movably supported in the longitudinal direction thereof, and the movable frame 6 is movably supported in the direction orthogonal to the longitudinal direction of the main body frame. A slider 8 and a carriage 10 supported by the body frame 1 so as to be movable in the longitudinal direction thereof,
A rock crusher provided with a drum cutter 16 provided on the trolley 10 so as to be able to move up and down and provided with a cover 18 on the upper side, and a suction pipe 19 and a suction device which are located at the rear of the tram cutler 16 in the excavating direction to suck the crushed rock by the drum cutter 16. A suction means, a load header 28 which is provided at the outer end of the main body frame 1 so as to be capable of swiveling and ascending / descending, respective drive means for individually driving the respective movable parts, and means for remotely operating these respective drive means. A submarine excavator characterized by comprising.