JPS5989886A - Laying machine for submarine pipeline, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a burying machine for submarine pipelines and the like.

JILJ has traditionally constructed pipelines, etc. laid on the seabed.
As a machine, a plow is towed by a ship, and the plow is used to excavate the seabed while laying pipelines, etc., and burying the pipelines, etc. at the same time. There is a type that excavates the seabed and buries the pipeline etc. while running along the pipeline etc.

However, the former method is difficult to control because the work is carried out while the plow is being towed by a ship, and it can only be applied to shallow water areas, while the latter method is designed to prevent pipelines etc. from being crushed by the crawler. That is, the crawler must lower the traveling body from the sea surface so as to straddle a pipeline or the like, which is difficult to do, and there is a risk that the crawler will be unable to travel on rocks or soft ground on the seabed.

The present invention provides a machine for burying submarine pipelines, etc., which solves these problems.The main feature of this invention is that it has a submarine walking device that walks by legs, and a pair of excavators facing diagonally downward. The undersea walking device is moved along the pipeline, etc. while the cutter is positioned so as to hug the pipeline, etc. from both sides of the pipeline, etc. laid on the seabed, thereby cutting the pipeline, etc. Remove the earth and sand from below and sink the pipeline etc. there.''
The reason is that we made it so that

The present invention will be explained below with reference to embodiments shown in the drawings. 1 to 3 are a front view, a plan view, and a side view showing the entire buried installation according to the present invention. The illustrated burying machine connects an outer machine frame 2 with four legs 1 and an inner machine frame 4 with four legs 3 to each other via a moving mechanism, and each leg 1. 3 are telescopically arranged to constitute a submarine walking device, and a pair of rotary cutting cutters 5a and 5b for excavation are arranged below the walking device diagonally downwardly facing each other.

The moving mechanism of the submarine walking device has an outer engine frame 2 and an Enoki frame 4.
6. Move forward and backward. It is installed to be movable and pivotable in the left and right directions (in the construction direction) and in the left and right directions. The pinion is slidably arranged along the frame of the frame 2, and a driving means such as a rack or a pinion is arranged between them, and a drive source such as a motor is operated to rotate the pinion. Swivel unit 6
is moved along the frame of the outer engine frame 2.

Needless to say, driving means consisting of a drive gear and a driven gear, which are rotated by a motor or the like, is disposed between the rotating member and the fixed side members of the rotating unit 6. ,Also,
The leg 1.3 is made up of a base cylinder 7a and an extendable cylinder 7b that is slidably inserted into the base cylinder, and a hydraulic cylinder 8 is installed inside the base cylinder 7a. is accommodated. The tip of the piston rod 8a of this hydraulic cylinder 8 is connected to the inside of the tip of the telescopic cylinder 7b, and is configured so that the telescopic cylinder 7b can freely extend and contract with respect to the base cylinder 7a. A ground plate 9 is attached. The outer engine frame 2 shown in the embodiment is further provided with a thruster 1o at the upper corner, and buoyancy tanks 11 on the left and right sides of the upper apron.

This walking device is suspended in the sea by a support ship, is seated at an appropriate position on the seabed, and is controlled as follows to walk on the seabed.

When moving the walking device in the front-back direction, first reduce the legs 3 of the inner machine frame 4, as shown in Fig. 5(a).
In this state, the inner machine frame 4 is moved (Fig. 5 (1))), and then the legs 3 are extended and the legs 3 are brought into contact with the ground (Fig. 5 (C)).
Next, the legs 1 of the outer engine frame 2 are reduced, and in this state, the outer engine frame 2 is moved (FIG. 5(d)), and the legs 1 are lowered to the ground. In particular, it is possible to move the walking device a desired distance 1111 in the front-back direction by Jζ without repeating such operations.

Move the walking device left and right. In this case, as shown in FIGS. 6(a) to 6(d), the inner machine frame 4 is
By alternately moving the outer frame 2 and the outer frame 2, the walking device can be moved in the left-right direction.

Also, when turning the walking device, first see Figure 7 (a).
As shown in FIG.
), then extend the leg 3 and make it into four pieces (7th
(C)), then reduce the leg 1 of the outer engine frame 2, and in that state, rotate the outer engine frame 2 by an angle θ (Fig. 7 (d)),
Extend leg 1 and touch the ground.

Such control of the walking device is carried out as appropriate on the ship based on information obtained by monitoring means such as a television camera installed on the device.

The burying machine for submarine cable runs and the like shown in the embodiment has excavation cutters 5a and 5b disposed in the inner machine frame 4, as shown in detail in FIGS. 8 and 9.

The cutters 5a and 5b have comb blades around them, suction ports inside the cutters, and motors 12a and 12 at the top.
It is rotatably supported by b.

Furthermore, the motors 12a and 12b have one end connected to the cutters 5a and 5.
The vibrations 13a, 13b are directed to the L-shaped pipe 13a113b connected to the suction port of the pump 14a, i4b.
The position of the cutters 5a and 5b can be changed from the state shown in FIG. 8 to the retracted state shown in FIG. The attitude is controlled by cylinders 16a and 16b interposed between the frames of the machine frame 4. Note that 17a and 17b are earth and sand discharge pipes having one end connected to the bumps 14a and 14b and the other end opening to the outside of the inner machine frame 4.

This J: Cutters 5a, 5 arranged in the inner machine frame 4 in this way.
b from the stored state in FIG. 9, the cylinders 16a,
16b to the state shown in FIG. 8, that is, the pipeline 18.
etc., and the motor 12a
, 12b are driven and rotated to excavate the earth and sand below the pipeline 18, etc.

At the same time, the pumps 14a and 14b are operated to move the excavated earth and sand to the L-shaped pipes 13a and 13b and the earth and sand discharge pipe 17.
a, 17b, and is discharged to the outside of the inner machine frame 4. This operation is continuously performed along the vibrating line 18 and the like using the walking device, and the pipeline 18 and the like are sunk into the seabed. .

Although the present invention has been described by way of examples, the present invention basically consists of a walking device that walks along a pipeline, etc., and a device installed in the device that excavates and removes earth and sand under the pipeline, etc. while holding the pipeline, etc. It is a requirement that a cutter be provided, and various aspects may be adopted within the scope of the claims, such as installing a crawler instead of the ground plate of the extendable legs.

j! of the submarine pipeline etc. according to the present invention! I'! As is clear from the above, the K1 machine uses a walking device that uses its legs to walk, so it can work on rocks and soft ground without trampling on pipelines, etc. Since the cutter is positioned to remove earth and sand from beneath the pipeline, etc., the pipeline, etc. can be sunk in the same position, ensuring extremely high precision work.

[Brief explanation of drawings]

Fig. 1 is a front view showing a burying machine for submarine pipelines etc. according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view, Fig. 4 is a longitudinal sectional view showing the structure of the legs, Figure 5 (a'),
(b), (c), and (d) are diagrams explaining the movement of the burying machine in the front and back direction according to the present invention, and Fig. 6 (a), (b), and (C
), (d) are diagrams explaining the horizontal movement of the burial machine, Figures 7 (a), (b), (C), and (d) are diagrams explaining the turning of the burial machine, and Figure 8 The figure shows a cutter according to the present invention; FIG. 9 is a front view, and FIG. 9 is a plan view showing the cutter in a stored state. DESCRIPTION OF SYMBOLS 1...Leg, 2...Outer machine frame, 3...Leg, 4...Inner machine frame, 5a, 5b...Cutter, 6...Swivel unit, 8...C first Continued on page 0 Author: Toshihisa Naruse, 2597 Shinomiya, Hiratsuka City, Komatsu Ltd. 0 Author: Toshiyuki Sawano, 2597 Shinomiya, Hiratsuka City, Komatsu Ltd. 0 Author: Kanji Tsubakihara, 2597 Shinomiya, Hiratsuka City, Komatsu Ltd. Procedures Continued Amendment 14 Indication of the case Buried equipment for submarine pipelines, etc. 3 Person making the amendment Patent applicant 5 Subject of amendment The application and specification (first page only) clearly stated in type print (black). 6. Contents of the amendment as shown in the attached sheet (Contents may vary: B5:゛.

Claims (1)

[Claims] An outer engine frame and an inner engine frame each equipped with three or more pieces of metal,
The above-mentioned submarine walking device is moved along the pipeline, etc. while being positioned so as to hug the pipeline, etc. from both sides of the pipeline, etc., which can move relatively in at least one horizontal direction, thereby removing all the earth and sand under the pipeline, etc. A machine for burying nσ bottom pipelines, etc., which is characterized by being able to completely submerge the pipeline, etc. there.