JPH0230885A - Submarine base rock crusher - Google Patents

Abstract

PURPOSE: To stably perform crushing operation even at high tide by sliding a submerged hammer along a guide rail attached to a leader, and connecting the crushing chisel to the submerged hammer. CONSTITUTION: A leader 6 is attached to a fixed main body 2, having a counterweight part, and a guide rail 5 is formed on the leader 6. A submerged hammer 1 is slidably disposed on the guide rail 5, and a bedrock crushing chisel 3 is connected to the submerged hammer 1. The submerged hammer 1 produces striking force by means of hydraulic power, and the bedrock crushing chisel 3 given with the striking force crushes bedrock.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for crushing bedrock on the seabed, and particularly for crushing bedrock layers located under the seabed, under the lakebed, under the riverbed, etc. (hereinafter simply referred to as r seabed J). This invention relates to a submarine rock crushing device for crushing rocks.

[Prior Art] Conventionally, submarine rock has been crushed by dropping heavy objects from a ship or by driving a crushing chisel using air pressure.

[Problems to be Solved by the Invention] However, when crushing seabed rock by dropping a heavy object into the water, the fracture energy is significantly reduced when the heavy object falls into the water, and it is difficult to crush hard rock. It was not suitable.

Furthermore, even when a pneumatically driven crushing chisel is used, since it is suspended from the ship, the motion of the ship is transmitted to the equipment such as the crushing chisel, causing the tip of the crushing chisel to slide on the rock, effectively preventing the rock from breaking. It was difficult to crush the crushing chisel, and the impact generated by the crushing chisel and the rock mass was transmitted to the equipment that hung the crushing chisel, causing the ship to oscillate.

SUMMARY OF THE INVENTION An object of the present invention has been made in view of the above-mentioned problems, and is to provide a submarine rock crushing device that can stably perform crushing operations even under high currents.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and the submarine rock crushing device of the present invention is a device for crushing rock on the seabed, and includes a counterweight portion. The structure includes a leader provided on a fixed body, a guide rail attached to the leader, an underwater hammer slid on the guide rail, and a rock crushing chisel connected to the underwater hammer.

Further, as shown in the embodiment, a wing portion is formed on the upper part of the fixed main body.

[Function] Therefore, since the submarine rock crushing device of the present invention can be operated while on the bottom of the sea, the rock crushing work can be performed stably without the vibration of the ship being transmitted to the device. In addition, since the fixed body is provided with a counterweight, it will not fall over even under high tides.Furthermore, if the wing portion is formed as in the embodiment.

When the submarine rock crushing device is alternately suspended and placed on the bottom of the seabed to change its location, the system acts on the submarine rock crushing device so that the overturning moment due to tidal current force is minimized. The wings allow the submarine rock crusher to rotate in the direction where the tidal force is minimized. Therefore, it is possible to crush submarine rock without being affected by tidal currents.

[Example] An example of the present invention will be described below based on the drawings. Note that the members, arrangement, etc. described below do not limit the present invention, and can be variously modified within the scope of the spirit of the present invention.

FIG. 1A is a side view of the submarine rock crushing device S, and the basic configuration of the submarine rock crushing device S of this example is that a leader 6 is attached to a fixed main body 2 equipped with a counterweight part 4,
A guide rail 5 is formed on the leader 6, an underwater hammer 1 is arranged so as to be slidable on the guide rail 5, and the underwater hammer 1 and the rock crushing chisel 3 are connected. These will be explained in detail below.

The fixed main body 2 of this example has a branch portion 2a as shown in FIG. 1B.
, 2a and a base portion 2b, the branch portion 2a of the fixed main body 2 is a Y-shaped box in plan view.

A counterweight portion 4 (4a, 4a, 4b) as shown in FIG. 1C is mounted inside the base portion 2a and the base portion 2b. Tripods 2c, 2c, and 2c with acute-angled tips are provided on the bottom surfaces of the branch portions 2a, 2a, and the base portion 2b, which are shaped like a 7-shape, respectively, in order to stably land the fixed body 2 on the seabed. It is being The tripod 2c of this example may be fixed to the fixed main body 2 as one body, or the tripod 2c may be configured to be extendable and retractable by a hydraulic device.

By configuring the tripod to be extendable and retractable in this way, when the fixed body 2 is installed on a bedrock, it can be adjusted so that it can stably land on the bottom regardless of the inclination of the bedrock. Note that the fixed body 2 and tripod 2c are not limited to the shapes of the above embodiments, and the tripod can also be modified as appropriate so as to match and maintain the shape of the fixed body.

A leader 6 is installed at the tip of both branches 2a, 2a of the fixed main body 2.
A cylindrical connecting rod 7 that holds the is connected. The leader 6 has a cylindrical body inclined obliquely to the fixed body 2, and a guide rail 5 is attached to the inclined surface of the leader 6. The inclination angle of the leader 6 in this example is 75 degrees with respect to the seabed. However, this leader 6
The inclination state can be made variable using the fixed main body 2 and a drive device such as a hydraulic device. By configuring the leader 6 to be variable in this way, the chisel 3 can be positioned depending on the rock condition and the like. Also,
A retaining portion 6a is formed at the upper end of the leader 6 to engage with a hanging wire 14, which will be described later. An ultrasonic transmitter 8 is attached to a predetermined upper part of the leader 6 in this example, and a chisel guide 9 for guiding and holding the tip side of a rock-breaking chisel 3, which will be described later, is formed at the bottom end.

Further, the submarine rock crushing device S of this example has a wing section 10 disposed on the upper part of the fixed main body 2. The wing portion 10 is a plate-shaped body having a substantially triangular shape, and is formed on the base portion 2b of the fixed main body 2. In addition, in this example, one side of the wing section 10 is connected to the leader 6.
is connected to.

A breaking chisel 3 and an underwater hammer 1 are connected to the guide rail 5 of the leader 6 at the rear of the breaking chisel 3, and these underwater hammer 1 and the breaking chisel 3 are attached so as to be slidable by a holding device 11. . The underwater hammer 1 of this example is an underwater hydraulic hammer that generates striking force by hydraulic pressure, and is connected to a hydraulic hose 18, which will be described later. A reflecting plate 1a is attached to the rear end of the underwater hammer l in this example, which transmits the impact force to the rock breaking chisel 3, and is configured to reflect the ultrasonic waves emitted by the ultrasonic transmitter 8. The progress of the rock crushing chisel 3 is detected. However, the means for grasping the progress of the crushing chisel 3 is not limited to such an ultrasonic transmitter 8, but it is sufficient if the distance can be measured. You may also use methods such as reading. The rock crushing chisel 3 is a cylindrical body with a conical head with an acute angle at the tip for crushing rock.

Next, an example of use and operation of the submarine rock crushing device MS having the above configuration will be explained.

In this usage example, the submarine rock crushing device S is.

This figure shows an example in which the robot is lowered from a support ship to the seabed by a hanging wire 14 to a crane on the support ship, and then landed on the seabed surface. The support vessel 15 is equipped with a power unit 16 for operating the underwater hammer 1, and the hydraulic pressure generated here is transmitted to the underwater hammer l below the seabed via a control panel 17 and a hydraulic hose 18. do. An intermediate buoy 19 and a marker buoy 20 are attached to the hydraulic hose 18 for adjusting buoyancy. By loosening the hanging wire 14, the submarine rock crushing device S lowered to the bottom of the seabed can stably land on the seabed without being affected by the vertical movement of the support ship 15 caused by waves. I can do it. At this time, if the tripod 2C is configured to be extendable and retractable, it is possible to position the submarine rock crushing device S in accordance with the situation under the seabed. Further, in this example, since the wing section 10 is formed on the submarine rock crushing device S, even if a moment such as a tidal force is applied to the main unit Hs, this moment acts on the wing section IO, so that the device S The entire structure naturally rotates in an orientation that is most stable against tidal forces, reducing the influence of tidal forces. Furthermore, since the counterweight portion 4 is provided, a moment can be generated to offset the overturning moment caused by the tidal current force. As described above, the undersea rock crushing device S is operated with the hanging wire 14 slackened and the undersea rock crushing device S placed on the bottom of the ocean floor. The underwater hammer 1 generates a striking force using hydraulic pressure and transmits it to the rock breaking chisel 3. The rock crushing chisel 3 to which impact force is applied crushes the rock. As the rock is crushed, the underwater hammer l and the rock crushing chisel 3 are lowered, and this vertical movement is performed along the guide rail 5. The ultrasonic transmitter 8 is used to measure the amount of descent at this time, that is, the depth of the tip of the chisel 3. Note that the chisel guide 9 is a guide that holds down the chisel 3 so that the rock crushing chisel 3 does not slide sideways.

As described above, according to one aspect of the present invention, the apparatus can be used with the entire apparatus on the bottom of the ocean floor so that the vibration of the support ship is not transmitted to the submarine rock crushing apparatus. Additionally, in order to ensure the stability of the entire device, a counterweight is attached to the fixed body to offset the overturning moment caused by the tidal current. Furthermore, when working
The entire device is resuspended one after another and moved from one crushing location to another. At this time, the fixed body is equipped with wings so that the device rotates in the direction of least resistance in response to the direction of the current. This is what is being done.

[Effects of the Invention] As explained above, the submarine rock crushing device of the present invention performs crushing by landing on the seabed, and the submarine rock crushing device is not affected by the movement of a support vessel or the like. .

In addition, a counterweight is installed on the crushing fixing body.
This generates a moment that offsets the overturning moment due to the tidal force acting on the device, allowing stable crushing work even under high tidal currents.

3... Rock crushing chisel, 4... Counterweight, 5... Guide rail, 6... Leader 7...
・Connection hand, lO...wing part, S submarine rock crushing device.

Patent applicant Nimitsui Marine Development Co., Ltd. Same: I H C Hydrohammer P-buoy 2 Morinagagumi Co., Ltd. Representative Patent Attorney: Atsushi Aki Yama

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, in which FIG. 1A is a side view of a submarine rock crushing device, FIG. 1B is a plan view, and FIG.
Figure C is a partial sectional view taken along line I-I in Figure 1A, and Figure 1D.
The figure is an explanatory diagram of the state of use.

Claims (1)

[Scope of Claims] 1. A device for crushing rock on the seabed, which includes a leader provided on a fixed body including a counterweight, a guide rail attached to the leader, and a slider that slides on the guide rail. A submarine rock crushing device comprising: an underwater hammer; and a rock crushing chisel connected to the underwater hammer. 2. The submarine rock crushing device according to claim 1, wherein a wing portion is formed on the upper part of the fixed body.