JPH10150711A - Equipment for burying submarine cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the efficiency of an underwater pump and make an easy digging of the bottom of the sea by providing an equipment with a discharge pipe for digging located along the periphery of the underwater pump and a digging supporting section mounted on a pump mounting section. SOLUTION: When burying a submarine cable, if a burying machine 1 is located with a submarine cable 20 which is preliminarily laid on the bottom of the sea in line with guide rollers 13, 16 of the burying machine 1, the sea water enters inside through holes formed in a side plate of a travelling roller 11 and thereby an underpump 3 and a back pressure adjustment pump 6 get started. Then, the sea water is sucked through strainers 3a, 6a and is sent as digging water to a digging water discharge pipe 5 and a back pressure adjustment pipe 7 and then is jet out through a digging water discharging section 17. The digging water jet out through the digging water discharging section 17 makes a groove in the bottom of the sea and the submarine cable 20 is guided by the guide rollers 13, 16 to be put in the groove and a flat plate 8 of the burying machine 1 abuts against the bottom of the sea. By this method, a pressure loss can be reduced at the time of transmission of water and thereby the efficiency of the underwater pump can be increased and the bottom of the sea can be easily dug.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burial machine for a submarine cable or the like for burying a cable, a water pipe or the like on the seabed while excavating the seabed.

[0002]

2. Description of the Related Art Conventionally, the following burial machines have been known as burial machines for burying cables, water pipes and the like on the sea floor. (A) A burial machine that digs a groove on the seabed with a plow blade or bucket, lays a cable or the like in the groove, and then covers the groove with the cable or the like with mud and buries the cable or the like. (B) A burial machine for digging the seabed by injecting air into the seabed with an air nozzle communicating with an air pump on the sea, and burying cables and the like on the seabed. However, the burying machine of (a) has a problem that the work of laying the mud is required after arranging the cables and the like, which requires much labor and man-hours for the burying work, and the workability of burying the cables and the like is lacking. . Further, in the burying machine of (b), since the air is jetted to the seabed to excavate the seabed, there is a problem that the buried machine rises sharply and it is difficult to dig at a predetermined depth. . In addition, there is a problem that the weight of the burying machine is increased due to an increase in the size of the burying machine and the provision of a heavy weight in order to prevent the buried machine from rising, and the transportability is poor. Furthermore, due to the influence of water pressure and the like,
However, there is a problem that the excavation can only be performed up to m to 20 m, the usable area of the burying machine is narrow, and convenience is lacking.

In order to solve these problems,
The following burial machines have been intensively studied and disclosed. (C) Japanese Patent Publication No. 55-15574 (hereinafter referred to as "A") discloses an airframe supporting jet-type excavating means,
A planetary outer ring which is rotatably supported by an axle on both sides of the body and is rotatably supported on the outer periphery of the rotating body and is rotatably fitted around the rotating body by circumscribing each planetary outer ring and each planetary outer ring. And a wheel including a creased endless belt. (D) Japanese Patent Publication No. 56-37381 (hereinafter referred to as “B”) discloses a submersible motor pump for supplying one or more pairs of jet nozzles, a spade blade for discharging earth and sand, and high-pressure water to the jet nozzles. And a submarine cable introduction unit for introducing a submarine cable into a groove are disclosed. (E) Japanese Patent Publication No. 63-63693 (hereinafter referred to as C) discloses that the front of a jet plow having two long side plates is rotatably mounted on a body frame of an buried machine pulled on the seabed. A jet-type high-speed burying machine that pivotally supports a jet nozzle inside a side plate is disclosed. (F) Japanese Patent Publication No. 1-51613 (hereinafter referred to as Japanese Patent Publication No. 2) discloses a cable passage which pivotally supports a cable guide on a submarine sled body and opens at both ends in a longitudinal direction. A submarine cable burying device is disclosed, in which excavation means are provided at an upper portion and a lower portion between a cable and a channel opening surface.

[0004]

However, the above-mentioned conventional burying machines for submarine cables and the like have the following problems. In the jet-type submarine excavator described in Japanese Patent Publication No. A, the structure of the wheels rotatably supported by the axle on both sides of the fuselage is complicated, and failures such as the planetary outer ring and the endless belt with folds are likely to bite. In addition, there was a problem that maintenance management was difficult. In the submarine cable burying machine described in the gazette of the publication, since the cable to be buried on the seabed is introduced into the burying machine from the cable inlet of the submarine cable burying machine and the burying work is performed, installation of the submarine cable burying machine and burying of the submarine cable are performed. There is a problem that it is difficult to attach and detach the submarine cable from the aircraft. In the jet-type high-speed burial machine described in Japanese Patent Publication No. C, a high-pressure water is supplied by connecting a water supply hose connected to a jet water supply pump installed on a ship or the like towing the buried machine to a jet nozzle of the buried machine. Therefore, there is a problem that the pressure loss at the time of water supply is large and the water supply pump for jets lacks efficiency. In addition, since the body frame of the buried machine protrudes from the float, when there is an obstacle such as rocks on the sea floor, the body frame of the buried machine collides with the obstacle and stops running while burying cables and the like. Had. In the submarine cable burying device described in Japanese Patent Publication No. 2, when there is an obstacle such as a rock on the seabed, after climbing over the obstacle with a submarine sled body and falling from the obstacle, the submarine cable burying device There were problems such as giving impact and bending the submarine cable to be buried.

The present invention solves the above-mentioned conventional problems. The present invention enables the vehicle to travel without being hindered by obstacles on the seabed, has a good jetting efficiency of drilling water for digging the seabed, and adjusts the digging force. It is an object of the present invention to provide a burying machine for a submarine cable or the like, which can be formed, has a simple structure, and can be easily attached to and detached from a submarine cable and the like.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a burying machine for a submarine cable or the like according to the present invention comprises a pump mounting portion, and at least two submersible units disposed on the pump mounting portion. A pump, a digging support portion erected downward from both sides of the pump mounting portion, and a digging water disposed along an outer peripheral side of the digging support portion from a discharge portion of the submersible pump. A discharge pipe for drilling provided with a large number of discharge sections,
A horizontal plate disposed on both sides of the pump mounting portion, and a traveling portion disposed at an end in the traveling direction of the pump mounting portion,
A roller shaft disposed on the traveling portion, a traveling roller pivotally supported by the roller shaft, a guide roller shaft disposed on the excavation support portion and / or the traveling portion, and a shaft on the guide roller shaft. And a supported guide roller. With this configuration, seawater is sucked by the submersible pump provided in the pump mounting section and is sent to the nearest discharge pipe for excavation, so the length of the pipe from the submersible pump to the discharge pipe for excavation is short. This has the effect of reducing the pressure loss when sending water and improving the efficiency of the submersible pump. Also, since the excavation discharge pipe connected to the submersible pump is disposed along the outer peripheral side of the excavation support portion, the excavation water can be jetted from the excavation water discharge portion to excavate the seabed, and the guide roller can be excavated. Has the effect that a submarine cable or the like can be buried along. In addition, since the excavation support portions are erected downward from both sides of the pump mounting portion, it is easy to route a submarine cable or the like along guide rollers provided between the excavation support portions, It has the effect that it is easy to attach / detach a buried machine such as a cable and a submarine cable. In addition, since the horizontal plate is provided, it is possible to maintain the level with the seabed, to prevent the burying machine such as the submarine cable from sinking to the seabed, and to discharge high-pressure drilling water. Even in this case, the buried machine such as the submarine cable can be prevented from floating due to the resistance of the horizontal plate. In addition, the running roller is provided in the running section, so that obstacles such as rocks on the sea floor can be overcome, and the running of the cable or the like can be prevented from being stopped by the obstacles on the sea floor while being buried. Having.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A submersible cable or the like burying machine according to claim 1 of the present invention includes a pump mounting portion, at least two submersible pumps provided in the pump mounting portion, and the pump. A digging support portion is provided to be erected downward from both sides of the mounting portion, and a plurality of digging water discharge portions are provided along the outer peripheral side of the digging support portion from the discharge portion of the submersible pump. A discharge plate for excavation, a horizontal plate disposed on both sides of the pump mounting portion, a traveling portion disposed at an end of the pump mounting portion in a traveling direction, and a traveling portion disposed on the traveling portion. A roller shaft, a running roller supported by the roller shaft, a guide roller shaft provided in the excavation support portion and / or the running portion, and a guide roller supported by the guide roller shaft. , Is provided. As a result, the submersible pump is disposed on the pump mounting portion and sucks seawater to make drilling water.Therefore, the pressure loss at the time of sending drilling water to the discharge pipe for drilling disposed immediately near the submersible pump is reduced. It has the effect that it can be reduced. In addition, it is possible to excavate the seabed by injecting the drilling water from the drilling water discharge portion, and to bury a submarine cable or the like in the seabed along the guide rollers. Further, since the excavation support portions are erected downward from both sides of the pump burying machine, the submarine cable and the like can easily be guided along guide rollers between the excavation support portions, and the burial machine for the submarine cable and the like can be easily laid. Has the effect that it can be easily attached to and detached from a submarine cable or the like. In addition, the horizontal plate can keep the seabed horizontal, prevent the buried machine such as the submarine cable from sinking to the seabed, and further lift the buried machine such as the submarine cable by discharging high-pressure drilling water. Can be prevented. Also,
The running roller has the effect of being able to get over obstacles such as rocks on the sea floor. Note that a counterweight may be provided on the pump mounting portion. It is possible to prevent the airframe from being lifted up due to the injection force from the excavation water discharge portion when excavating the seabed.

According to a second aspect of the present invention, there is provided a burying machine for a submarine cable or the like according to the first aspect, wherein any one of the pump mounting portion, the horizontal plate, the traveling portion, and the traveling roller is provided. The above is the configuration formed so as to be detachable via the connecting portion. With this, it is possible to divide each part when storing or transporting the buried machine such as the submarine cable,
It has the effect of being easy to transport and not taking up space when storing it in a warehouse or the like. Further, when the pump mounting portion and the excavation support portion are detachably formed, there is an effect that the excavation support portion can be exchanged according to the burial depth of a submarine cable or the like.

According to a third aspect of the present invention, there is provided a burial machine for a submarine cable or the like according to the first aspect of the present invention, wherein the traveling roller includes a hollow cylindrical member, and the hollow cylindrical member. And a side plate portion provided on both side surfaces of the member and having a large number of holes. This allows
When the buried machine such as the submarine cable is submerged on the seabed, seawater enters into the hollow cylindrical member from the hole of the side plate portion, the weight of the traveling roller increases, and the traveling roller can be used in place of the counterweight, and can be placed on the sea. When the burying machine such as the submarine cable is lifted, the seawater in the hollow cylindrical member escapes from the hole of the side plate portion, the weight of the traveling roller is reduced, and it is easy to convey on the sea or land.

According to a fourth aspect of the present invention, there is provided a burial machine for a submarine cable or the like according to any one of the first to third aspects, wherein the pump mounting portion comprises: a back pressure adjusting pump; It has a configuration provided with a discharge part of the back pressure adjustment pump and a back pressure adjustment pipe connected to an end of the excavation discharge pipe. This has an effect that the jetting power of the drilling water from the drilling water discharge portion of the drilling discharge pipe can be significantly increased in accordance with the condition of the seabed.

According to a fifth aspect of the present invention, there is provided a burial machine for a submarine cable or the like according to any one of the first to fourth aspects, wherein the excavation water discharge portion is rotatable discharge port. And / or a configuration provided with a nozzle portion capable of adjusting the discharge amount. With this, it is possible to adjust the discharge direction of the nozzle part according to the size of the buried object such as a cable, and to adjust the excavation depth by adjusting the amount of flowing water according to the condition of the seabed. Have. A cock or the like is used for adjusting the amount of flowing water.

(Embodiment 1) An embedding machine for a submarine cable or the like in Embodiment 1 will be described below with reference to the drawings, taking the case of embedding a cable as an example. FIG. 1 is a plan view of a submerged cable or the like burying machine in the first embodiment, FIG. 2 is a side view of a main part of the submarine cable or the like in the first embodiment, and FIG. FIG. 4 is a bottom view of a main part of a buried machine such as a submarine cable, and FIG. 4 is a front view of a main part of a traveling unit of the buried machine such as a submarine cable in the first embodiment. In the figure, reference numeral 1 denotes a burying machine for submarine cables and the like in the first embodiment, and 2 denotes a burying machine 1 for submarine cables and the like.
Pump mounting portion, 2a is a pump fixing portion disposed on the pump mounting portion 2, 3 is a submersible pump which is disposed on both sides of the pump mounting portion 2 and is fixed by the pump fixing portion 2a, 3a Is a discharge part of the submersible pump 3, 3b is a strainer disposed on the upper part of the submersible pump 3, 4 is a digging support part standing upright from both sides of the bottom center of the pump mounting part 2 downward,
5 is a discharge pipe for excavation arranged along the outer peripheral side of the excavation support part 4 from the discharge part 3a of the submersible pump 3, and 6 is the submersible pump 3, 3 between the two submersible pumps 3. And a back pressure adjusting pump fixed in the pump fixing portion 2a, 6a is a discharge portion of the back pressure adjusting pump 6, 6b is a strainer provided in an upper part of the back pressure adjusting pump 6, 7 Is a back pressure adjusting pipe connecting the discharge portion 6a of the back pressure adjusting pump 6 and the end of the excavating discharge pipe 5, 8 is a horizontal plate arranged on both sides of the pump mounting section 2, and 9 is a pump mounting section. A traveling portion formed at the end of the mounting portion 2 in the traveling direction and formed of a frame, 9a is a roller fixing portion disposed on the traveling portion 9, 10 is disposed on the traveling portion 9, and a roller fixing portion is provided. A roller shaft 11 fixed at 9a is rotatably supported at both ends of the roller shaft 9, and is formed of a hollow cylindrical member and a side plate portion. , 12 is disposed on the end of the running direction of the running part 9, engaging portion tow rope is engaged, axially supported by the guide rollers in the guide roller shaft in the running part 9 13, 1
4 is a side plate portion disposed on both sides of the hollow cylindrical member of the traveling roller 11, 14a is a large number of holes formed in the side plate portion 14,
Reference numeral 15 denotes a guide roller shaft provided on the excavation support unit 4;
Is a guide roller supported by a guide roller shaft 15;
Is a drilling water discharge portion formed in the discharge pipe 5 for excavation, 18 is a guide portion arranged on the bottom surface of the traveling portion 9 in the traveling direction, 19
Is a guide roller shaft disposed on the guide portion 18 and supporting the guide roller 13.

The operation of the buried machine for submarine cables and the like according to the first embodiment configured as described above will be described below with reference to the drawings. FIG. 5 is a cross-sectional view of a main part showing a state of use of an underground machine such as a submarine cable according to the first embodiment. In the drawing, reference numeral 20 denotes a submarine cable buried on the seabed, and reference numeral 21 denotes a tow rope fixed to an engaging portion 12 of the traveling section 9 and a laying ship (not shown) such as a cable. The burying machine 1 such as a submarine cable is connected to a laying ship such as a cable via a tow rope 21 at an anchoring portion 12. Further, power is transmitted to the submersible pump 3 and the back pressure adjusting pump 6 from a laying ship such as a cable that pulls the burying machine 1 such as a submarine cable via a transmission line (not shown). In the work of burying submarine cables, first, a burying machine 1 such as a submarine cable is lifted by a crane at a burying point, and submerged on a seabed from a ship on which cables and the like are laid. As shown in FIG. 5, the burying machine 1 such as a submarine cable is installed from above the submarine cable 20 along the first guide rollers 13 and 16. At that time, when submerging the burying machine 1 such as a submarine cable on the seabed, seawater flows in from the hole 14 a formed in the side plate 14 of the traveling roller 11. Next, the submersible pump 3 and the back pressure adjusting pump 6 operate, and the strainer 3a,
The seawater is sucked through 6a to send drilling water to the drilling discharge pipe 5 and the back pressure adjusting pipe 7, and the drilling water is jetted from the drilling water discharge section 17 to drill the seabed. A groove is formed on the seabed by the drilling water jetted from the drilling water discharge unit 17, the submarine cable 20 guided by the guide rollers 13 and 16 is buried in the groove, and the horizontal plate 8 of the burying machine 1 such as the submarine cable is mounted on the seabed. Abut. Next, when the burying machine 1 such as a submarine cable is towed by a laying ship such as a cable via a tow rope 21, the traveling roller 11 rotates and the horizontal plate 8 of the burying machine 1 such as the submarine cable moves along the seabed. Then, the submarine cable 20 is buried in the trench while the trench is formed by excavating the seabed with the drilling water injected from the drilling water discharge unit 17. The submarine cable 20
Is determined by H of the excavation support part 4 shown in FIG. After the burying of the submarine cable 20, the burying machine 1 such as a submarine cable is lifted by a crane and lifted from the seabed. At this time, the seawater flowing into the traveling roller 11 is discharged from a hole 14a formed in the side plate 14 of the traveling roller 11.

As described above, since the burying machine for submarine cables and the like according to the first embodiment is constructed, seawater is sucked from the strainer by the submersible pump and the back pressure adjusting pump, and excavation is performed from the excavation water discharge portion of the excavation discharge pipe. It has the function of excavating the seabed by injecting water and burying the seabed cable guided by the guide rollers in the seabed. By pulling a buried machine such as a submarine cable with a cable or other laying ship via a tow rope, the running roller rotates,
The burying machine such as the submarine cable moves, and the submarine cable can be buried in a predetermined place, and an obstacle such as a rock on the seabed can be overcome by a traveling roller. This has the effect of preventing the running of the buried machine from stopping. In addition, since the horizontal plate moves along the seabed, it has an effect of preventing the burying machine of the submarine cable and the like from sinking into a sludge on the seabed. Even if high-pressure water is discharged from the apparatus, it is possible to prevent the buried machine such as the submarine cable from being lifted up by the recoil thereof. When a burial machine such as a submarine cable is lowered to the seabed, seawater flows in from the holes in the side plates of the traveling rollers and the weight of the traveling rollers increases, and the buoyancy of the burying machine for the submarine cables and the like occurs during excavation of the seabed. The reaction force of the excavation water jetting force can be suppressed, and when the buried machine such as the submarine cable is lifted to the sea, the seawater in the traveling roller is discharged from the hole of the side plate portion and the weight of the traveling roller is reduced. Is reduced, and the sheet is easily transported. Further, there is an effect that a burying machine such as the submarine cable can be installed on the seabed simply by submerging the submarine cable from above the submarine cable to be buried along the guide roller.

(Embodiment 2) A burying machine for a submarine cable or the like according to Embodiment 2 will be described below with reference to the drawings. FIG. 6 is a plan view of a submerged cable or the like burying machine according to the second embodiment, and FIG. 7 is a main part rear view of the submarine cable or the like burying machine according to the second embodiment. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the figure, reference numeral 22 denotes a burying machine such as a submarine cable in which the pump mounting part 2, the horizontal plate 8, the traveling part 9, and the traveling roller 11 according to the second embodiment are formed so as to be freely assembled separately. The connecting portion 24 between the horizontal plate 8 and the traveling portion 9 is provided with a cock for adjusting flowing water provided in a drilling water discharge portion 17 formed in the drilling discharge pipe 5 and a discharge port capable of changing a discharge direction. It is a nozzle part. Here, the connecting portion 23 is formed by a bolt, a nut, or the like, and connects the pump mounting portion 2 to the horizontal plate 8 and the traveling portion 9 by screwing or the like. The operation of the burying machine 22 for submarine cables and the like according to the second embodiment is the same as the operation of the burying machine 1 for submarine cables and the like according to the first embodiment, and a description thereof will be omitted.

As described above, the burying machine for the submarine cable and the like in the second embodiment is configured,
In addition to the operation of the above, when transporting the burying machine such as the submarine cable, it can be transported by dividing it into a pump mounting part, a horizontal plate, a traveling part, and a traveling roller, making it easy to transport and taking up space for storage. Has the effect that there is no. Also, since the nozzle is provided with a cock for adjusting the flowing water, opening and closing the cock according to the condition of the sea bottom can adjust the excavating power and improve the excavating efficiency. Further, by changing the discharge port of the nozzle portion, there is an effect that the nozzle can be adjusted in accordance with the diameter of the cable or the like and in accordance with the burial depth.

[0017]

As described above, according to the submarine cable burying machine of the present invention, the following excellent effects can be realized. (1) Since the seawater is sucked by the submersible pump and supplied to the excavation discharge pipe, the pressure loss during the transmission of the drilling water can be reduced, the efficiency of the submersible pump can be improved, and the structure of the buried machine such as the submarine cable is improved. It is simple and has an effect that maintenance can be easily performed. (2) The seabed can be excavated by sucking seawater with a submersible pump and injecting excavation water from an excavation discharge pipe, and a submarine cable or the like guided by a guide roller between excavation supports can be embedded in the ocean floor. It has the effect of being excellent in workability. (3) By arranging the guide rollers between the excavation supports, the submersible cable or the like is sunk on the seabed while the submarine cables or the like are being guided along the guide rollers from above the submarine cable to be buried. The burying machine such as the submarine cable can be installed on the seabed, and the burying machine such as the submarine cable can be easily detached from the submarine cable. (4) By pulling the buried machine such as the submarine cable with a laying ship such as a cable, the traveling roller rotates,
Since the burying machine of the submarine cable or the like moves, the submarine cable or the like can be buried in a predetermined place, and an obstacle such as a rock on the seabed can be overcome by a traveling roller. This prevents the running of the burial machine from stopping, and has the effect that the burying machine can be buried without sagging the submarine cable or the like. (5) Since the horizontal plate is in contact with the seabed when using the buried machine such as the submarine cable, the buried machine such as the submarine cable is prevented from sinking into the sludge on the seabed, and the resistance during traveling is reduced. Has the effect that the vehicle can run smoothly. (6) By forming the pump mounting portion, the horizontal plate, the traveling portion, and the traveling roller detachably, the pump mounting portion, the horizontal plate,
It can be stored and transported by being divided into a traveling section and a traveling roller, and has an effect of being excellent in transportability. (7) By forming the traveling roller with a hollow cylindrical member and a side plate having a large number of holes, when a burying machine such as a submarine cable is sunk on the seabed, seawater flows through the hole in the side plate of the traveling roller. Flow, the weight of the traveling roller increases, the buoyancy of the burying machine such as the submarine cable, and the reaction force of the jetting water jetting force generated during excavation can be suppressed. When the buried machine such as a cable is lifted to the sea, seawater in the traveling roller is discharged from the hole of the side plate portion, the weight of the traveling roller is reduced, and the buried machine such as the submarine cable is lightened and transported. It has the effect of being excellent in properties. (8) The back pressure adjusting pump can adjust the jetting power and the excavating width of the excavating water jetted from the excavating water discharge portion of the excavating discharge pipe, thereby improving the efficiency of excavating the seabed. (9) By arranging a nozzle with a cock for adjusting the flowing water at the drilling water discharge part, the cock can be opened and closed according to the condition of the seabed, the drilling power can be adjusted, and the drilling can be performed as shallowly and deeply as possible. Can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a burying machine for a submarine cable or the like according to a first embodiment.

FIG. 2 is a side view of a main part of a submerged cable or the like burying machine according to the first embodiment.

FIG. 3 is a bottom view of a main part of a burying machine for a submarine cable or the like according to the first embodiment.

FIG. 4 is a front view of a main part of a traveling unit of a buried machine such as a submarine cable according to the first embodiment.

FIG. 5 is a cross-sectional view of a main part showing a use state of a buried machine such as a submarine cable according to the first embodiment.

FIG. 6 is a plan view of a submerged cable or the like burying machine according to the second embodiment.

FIG. 7 is a rear view of a main part of a submerged cable or the like burying machine according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Burial machine of submarine cables etc. 2 Pump mounting part 2a Pump fixing part 3 Submersible pump 3a Discharge part 3b Strainer 4 Excavation support part 5 Excavation discharge pipe 6 Back pressure adjustment pump 6a Discharge part 6b Strainer 7 Back pressure adjustment pipe 8 Horizontal Plate 9 Running part 9a Roller fixing part 10 Roller shaft 11 Running roller 12 Engagement part 13 Guide roller 14 Side plate part 14a Hole 15 Guide roller shaft 16 Guide roller 17 Drilling water discharge part 18 Guide part 19 Guide roller shaft 20 Submarine cable 21 Tow ropes 22 Burial machine for submarine cables, etc. 23 Connecting part 24 Nozzle part

Claims (5)

[Claims] 1. A pump mounting part, at least two submersible pumps disposed on the pump mounting part, and a digging support part erected from both sides of the pump mounting part downward. And a discharge pipe for excavation, which is provided along the outer peripheral side of the excavation support part from the discharge part of the submersible pump and has a large number of excavation water discharge parts, and is disposed on both sides of the pump mounting part. A horizontal plate, a traveling section disposed at an end of the pump mounting section in the traveling direction, and a roller shaft disposed in the traveling section.
A traveling roller pivotally supported by the roller shaft, a guide roller shaft disposed in the excavation support portion and / or the traveling portion, and a guide roller pivotally supported by the guide roller shaft;
A burying machine for submarine cables and the like, comprising: 2. The apparatus according to claim 1, wherein at least one of the pump mounting portion, the horizontal plate, the traveling portion, and the traveling roller is detachably formed via a connecting portion. Underground equipment such as the submarine cable described in the table. 3. The roller according to claim 1, wherein the traveling roller includes a hollow cylindrical member, and side plates provided on both side surfaces of the hollow cylindrical member and having a large number of holes. Or a burying machine for a submarine cable or the like according to any one of the items 2 or 3. 4. The pump mounting part includes a back pressure adjusting pump, and a back pressure adjusting pipe connected to a discharge part of the back pressure adjusting pump and an end of the excavation discharge pipe. A burying machine for a submarine cable or the like according to any one of claims 1 to 3, characterized in that: 5. The drilling water discharge unit according to claim 1, wherein the excavation water discharge unit includes a rotatable discharge port and / or a nozzle unit capable of adjusting a discharge amount. Burial machine for submarine cables.