CN115111430A - Submarine pipeline burying machine - Google Patents
Submarine pipeline burying machine Download PDFInfo
- Publication number
- CN115111430A CN115111430A CN202110287535.1A CN202110287535A CN115111430A CN 115111430 A CN115111430 A CN 115111430A CN 202110287535 A CN202110287535 A CN 202110287535A CN 115111430 A CN115111430 A CN 115111430A
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- Prior art keywords
- cable
- swing frame
- jet
- submarine
- pressing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention relates to a submarine pipeline burying machine, which comprises a machine body frame, wherein one end of the machine body frame is provided with a cable pressing component, the cable pressing component comprises an upper cable pressing swing frame and a lower cable pressing swing frame, one end of the upper cable pressing swing frame is hinged with one end of the machine body frame, the other end of the upper cable pressing swing frame is movably connected with one end of the lower cable pressing swing frame, the lower cable pressing swing frame comprises an upper lower swing frame section and a lower swing frame section, the middle part of the upper swing frame section is hinged with the connecting end of an upper pressure roller arm, the cable pressing end of the upper pressure roller arm is provided with an upper pressure roller, the upper end of the lower swing frame section is hinged with the connecting end of a lower pressure roller arm, the cable pressing end of the lower pressure roller arm is provided with a lower pressure roller, the lower end of the lower swing frame section is provided with a cable pressing carrier roller, and a jet pump device on the bottom of the machine body frame jets and washes a deep groove for burying submarine pipelines on a submarine pipeline burying route. The submarine pipeline burying machine adopts a scheme that the submarine pipeline burying machine can meet the burying requirements of a submarine cable and a submarine pipeline at the same time, and has the characteristic of meeting the burying requirements of the submarine cable and the submarine pipeline.
Description
Technical Field
The invention relates to a submarine pipeline burying machine, in particular to a submarine cable, optical cable, hose and petroleum pipeline multipurpose burying excavator, and belongs to the field of submarine operation equipment.
Background
The existing submarine cable and submarine pipeline are buried, and basically, the two different operation modes are as follows: submarine cables, optical cables and hoses are essentially buried side by side, while petroleum pipelines are essentially trenched behind. Two operation modes determine two trencher structures with different structures.
During the laying process of submarine cables, optical cables and hoses, the cables, the optical cables or the hoses are firstly loaded into a cable embedding arm of an embedding machine, then the embedding machine is thrown to the seabed, the submarine cables are dragged slowly along a route, the cable embedding arm is slowly put down to the embedding depth, and the embedding operation is carried out while ditching.
In the laying process of the submarine pipeline, the trencher is firstly thrown above the petroleum pipeline on the seabed or rides on the petroleum pipeline, and the operation of ditching while walking is carried out along a route or along the pipeline.
The existing submarine cable burying machine is characterized in that a submarine cable is lowered to the submarine burying depth through a cable burying arm, so that the spraying and flushing operation cannot be carried out above a submarine pipeline in a suspension mode, and the post-trenching operation cannot be carried out by penetrating the submarine pipeline into the cable burying arm of the cable burying machine.
The existing submarine pipeline trencher cannot penetrate into a submarine cable, and cannot realize cable burying operation of paving and burying at the same time.
Due to the limitation of the capacity of the existing burying machine, construction units need to purchase seabed trenching equipment with various capacities to respectively meet the burying requirements of a submarine cable and a submarine pipeline, so that the problems of repeated investment, maintenance and the like are caused.
Disclosure of Invention
The invention discloses a novel scheme for a submarine pipeline burying machine, which adopts the scheme of the submarine pipeline burying machine capable of simultaneously meeting the burying requirements of submarine cables and submarine pipelines, and solves the problems that the existing similar products cannot meet the burying requirements of the submarine cables and the submarine pipelines at the same time, the applicability is single, the equipment cost is high and the like.
The invention relates to a submarine pipeline burying machine, which comprises a machine body frame, wherein one end of the machine body frame is provided with a cable pressing component, the cable pressing component comprises an upper cable pressing swing frame and a lower cable pressing swing frame, one end of the upper cable pressing swing frame is hinged with one end of the machine body frame, the other end of the upper cable pressing swing frame is movably connected with one end of the lower cable pressing swing frame, the lower cable pressing swing frame comprises an upper section of the lower swing frame and a lower section of the lower swing frame, the middle part of the upper section of the lower swing frame is hinged with the connecting end of an upper pressure roller arm, the cable pressing end of the upper pressure roller arm is provided with an upper pressure roller, the upper end of the lower section of the lower swing frame is hinged with the connecting end of a lower pressure roller arm, the cable pressing end of the lower pressure roller arm is provided with a lower pressure roller, the upper pressure roller is arranged on a submarine cable at the upstream of conveying, the submarine cable at the downstream of conveying is lapped on the cable pressing roller, the lower pressure roller is arranged on the submarine cable on the cable pressing roller, the bottom of the machine body frame is provided with a jet pump device, the jet pump device comprises a plurality of jet pump sets, nozzles of the jet pump sets downwards jet and flush towards a submarine pipeline burying route to form a burying deep groove, and the submarine pipeline is buried in the burying deep groove.
Furthermore, the other end of the upper swing frame of the cable pressing and the one end of the lower swing frame of the cable pressing form flexible connection through shackles.
Furthermore, the one end of organism frame of this scheme is equipped with puts up swing frame actuating mechanism on the pressure cable, put up swing frame actuating mechanism and include the last swing frame power cylinder on the pressure cable, go up swing frame driving arm, the afterbody of going up the swing frame power cylinder is articulated with organism frame, the one end of going up the swing frame driving arm is articulated with organism frame's one end, the output of going up the swing frame power cylinder is articulated with the other end of going up the swing frame driving arm, the other end of going up the swing frame driving arm is passed through the chain connection with the middle part of putting up the swing frame on the pressure cable, go up the swing frame power cylinder through last swing frame driving arm drive pressure cable go up the swing around the one end articulated with organism frame luffing motion.
Furthermore, the pump package that spouts of this scheme is including spouting the punching pump, spout the articulated pump support that erects on organism frame's bottom of the pump body portion of punching pump, spout the jet end of punching pump and spout the last power cylinder of punching pump, the output of spouting power cylinder under the punching pump is articulated, the afterbody of spouting the last power cylinder of punching pump is articulated with the organism frame of the top of spouting the jet end of punching pump, the afterbody of spouting power cylinder under the punching pump is articulated with the organism frame of the below of the jet end of spouting the punching pump, spout the power cylinder on the punching pump and spout the cooperation drive of power cylinder under the punching pump and spout the jet end luffing motion of punching pump and adjust and spray every single move angle.
Furthermore, the top of the machine body frame is provided with a bell mouth conduit assembly, the bell mouth conduit assembly comprises a bell mouth conduit, the middle part of the bell mouth conduit is erected on the conduit bracket, and the submarine cable at the conveying upstream enters the cable pressing component through the guide of the bell mouth conduit.
Furthermore, the top of one end and the other end of the machine body frame is provided with a conveying arc-shaped guide plate, and the submarine cable lapped on the conveying arc-shaped guide plate at one end of the machine body frame slides into the cable pressing part.
Furthermore, the outlet two sides of the conveying arc-shaped guide plate at one end of the machine body frame are vertically provided with a limiting baffle plate, and the submarine cable slides into the cable pressing part from the conveying arc-shaped guide plate between the limiting baffle plates.
The submarine pipeline burying machine adopts the scheme of the submarine pipeline burying machine which can simultaneously meet the burying requirements of submarine cables and submarine pipelines, and has the characteristics of capability of considering the burying requirements of the submarine cables and the submarine pipelines, good applicability and low equipment cost.
Drawings
Fig. 1 is a schematic view of a subsea pipeline burying machine in a state of burying a subsea cable.
Fig. 2 is a schematic view of a subsea pipeline burying machine in a state of burying a subsea pipeline.
Fig. 3 is a schematic left side view of the device of fig. 2.
Fig. 4 is a schematic top view of the device of fig. 2.
The device comprises a machine body frame 1, a jet pump support 2, a jet pump set 3, a jet pump upper power cylinder 4, a nozzle 5, a cable pressing upper swing frame 6, a cable pressing lower swing frame 7, an upper press roller 8, a lower press roller 9, a cable pressing carrier roller 10, a bell mouth conduit 11, an upper swing frame transmission arm 12, a conveying arc guide plate 13, a limit baffle 14, a submarine cable 15, a submarine pipeline 16 and a shackle 17.
Detailed Description
As shown in fig. 1 and 2, the submarine pipeline burying machine of the invention comprises a machine body frame, one end of the machine body frame is provided with a cable pressing component, the cable pressing component comprises a cable pressing upper swing frame and a cable pressing lower swing frame, one end of the cable pressing upper swing frame is hinged with one end of the machine body frame, the other end of the cable pressing upper swing frame is movably connected with one end of the cable pressing lower swing frame, the cable pressing lower swing frame comprises a lower swing frame upper section and a lower swing frame lower section, the middle part of the lower swing frame upper section is hinged with the connecting end of an upper pressure roller arm, the cable pressing end of the upper pressure roller arm is provided with an upper pressure roller, the upper end of the lower swing frame lower section is hinged with the connecting end of a lower pressure roller arm, the cable pressing end of the lower pressure roller arm is provided with a lower pressure roller, the lower end of the lower swing frame lower section is provided with a cable pressing carrier roller, the upper pressure roller is arranged on a submarine cable at the conveying upstream, the submarine cable at the conveying position is lapped on the cable pressing carrier roller, the lower pressure roller is arranged on the submarine cable at the cable pressing downstream, the submarine cable pressing carrier roller, the bottom of the machine body frame is provided with a jet pump device, the jet pump device comprises a plurality of jet pump sets, nozzles of the jet pump sets are downwards jetted and flushed towards a pipeline buried in the submarine pipeline to form a buried deep groove, and the submarine pipeline is buried in the buried deep groove. According to the scheme, the submarine pipeline burying machine capable of meeting the burying requirements of submarine cables and submarine pipelines simultaneously is adopted, as shown in figure 1, in the submarine cable burying operation mode, the submarine cables are positioned on a submarine pipeline burying route through upper compression rollers, lower compression rollers and cable compression carrier rollers of cable compression components, and then the submarine pipeline burying route is sprayed and flushed with a deep burying groove through a spraying and flushing pump device, so that the submarine cable construction is dug and buried synchronously. As shown in fig. 2, 3 and 4, in the operation mode for burying the submarine pipeline, the cable-pressing member is lifted and folded, and the deep burying groove is jetted and flushed out on the burying route of the submarine pipeline by using the jet-flushing pump device arranged above the submarine pipeline, thereby completing the burying operation of the submarine pipeline. Therefore, the scheme gives consideration to the embedding requirements of the submarine cable and the submarine pipeline, realizes multiple purposes, has good applicability and reduced equipment cost, and improves the construction efficiency.
Based on the scheme, in order to adapt to the deformable characteristic of the submarine cable, improve the seawater fluctuation adaptability of the cable pressing part, avoid deformation and improve the flexibility of operation, as shown in figure 1, the other end of the cable pressing upper swing frame and one end of the cable pressing lower swing frame are flexibly connected through shackles.
In order to realize the automatic adjustment function of the cable pressing component and adjust the position of the submarine cable according to the embedding requirement, as shown in fig. 1, one end of the machine body frame of the scheme is provided with a cable pressing upper swing frame driving mechanism, the cable pressing upper swing frame driving mechanism comprises an upper swing frame power cylinder and an upper swing frame transmission arm, the tail part of the upper swing frame power cylinder is hinged with the machine body frame, one end of the upper swing frame transmission arm is hinged with one end of the machine body frame, the output end of the upper swing frame power cylinder is hinged with the other end of the upper swing frame transmission arm, the other end of the upper swing frame transmission arm is connected with the middle part of the cable pressing upper swing frame through a lock chain, and the upper swing frame power cylinder drives the cable pressing upper swing frame to swing up and down around the end hinged with the machine body frame through the upper swing frame transmission arm. The functions of automatic switching, laying down, unfolding, lifting and folding of the upper swing frame and the lower swing frame of the pressing cable can be realized through the upper swing frame driving mechanism of the pressing cable.
In order to meet the requirement of adjustable injection angle of the jet pump set, and adjust the jet erosion angle according to specific conditions, as shown in fig. 1 and 2, the jet pump set of the scheme comprises a jet pump, the pump body part of the jet pump is hinged and erected on a jet pump support on the bottom of a machine body frame, the injection end of the jet pump is hinged with an upper power cylinder of the jet pump and the output end of a lower power cylinder of the jet pump, the tail part of the upper power cylinder of the jet pump is hinged with the machine body frame above the injection end of the jet pump, the tail part of the lower power cylinder of the jet pump is hinged with the machine body frame below the injection end of the jet pump, and the upper power cylinder of the jet pump and the lower power cylinder of the jet pump are matched to drive the injection end of the jet pump to swing up and down to adjust the jet pitch angle.
In order to ensure the stability of submarine cable transportation and improve the burying efficiency, as shown in fig. 1 and 2, a bell mouth conduit assembly is arranged on the top of the machine body frame, the bell mouth conduit assembly comprises a bell mouth conduit, the middle part of the bell mouth conduit is erected on a conduit support, and the submarine cable at the transportation upstream enters a cable pressing component through the bell mouth conduit.
In order to ensure that the submarine cable is not damaged due to excessive friction and scraping in the dragging process on the machine body frame, as shown in fig. 1, the top of one end and the top of the other end of the machine body frame are provided with a conveying arc guide plate, and the submarine cable lapped on the conveying arc guide plate at one end of the machine body frame slides into a cable pressing part. Based on the above scheme, in order to meet the requirement of stable conveying direction and avoid the submarine cable from sliding off the conveying arc guide plate, as shown in fig. 1, limit baffles are vertically arranged on two sides of the outlet of the conveying arc guide plate at one end of the machine body frame, and the submarine cable slides into the cable pressing component from the conveying arc guide plate between the limit baffles.
The scheme discloses a submarine cable, an optical cable, a hose and a petroleum pipeline multipurpose excavator, which can bury a submarine cable and a submarine pipeline. The cable pressing component mainly comprises a cable pressing upper swing frame 6 and a cable pressing lower swing frame 7, an upper pressing roller 8, a lower pressing roller 9 and a cable pressing carrier roller 10 are arranged on the cable pressing lower swing frame 7, the cable pressing upper swing frame 6 and the cable pressing lower swing frame 7 are in buckle-off flexible connection, the upper pressing roller 8 and the lower pressing roller 9 can swing along with submarine cables, the cable pressing carrier roller 10 swings along with the cable pressing lower swing frame 7, self-lubricating bearings are arranged at two ends of the upper pressing roller 8, the lower pressing roller 9 and the cable pressing carrier roller 10 and can rotate freely, and the cable pressing upper swing frame 6 is hinged to a front upper cross beam of the machine body frame 1. The cable pressing upper swing frame driving mechanism is driven by two 140mm cylinder diameter upper swing frame power cylinders, an upper swing frame transmission arm 12 is additionally arranged in the middle to improve a depression angle and increase a pitching moment, the lower end of the upper swing frame transmission arm 12 is hinged with the machine body frame 1, the upper end of the upper swing frame transmission arm is connected with the cable pressing upper swing frame 6 through a lock chain, the pitching angle is 100 degrees, the upward direction is 80 degrees, and the downward direction is 20 degrees. The middle of the jet pump is provided with a jet pump bracket 2, a bearing with a seat is installed, an oil cylinder seat is added at the front end of the jet pump, an upper power cylinder 4 of the jet pump and a lower power cylinder of the jet pump are respectively installed from top to bottom to drive the jet pump to do pitching motion up and down, the upper power cylinder 4 of the jet pump and the lower power cylinder of the jet pump are respectively pushed and pulled in the pitching process, the swing range of the jet pump is +/-6 degrees, a nozzle 5 cuts off an elongated straight pipe from the straight pipe, flange connection is adopted, and the diameter of the nozzle is 580mm or 600 mm. The drift diameter of the internal channel of the bell mouth conduit 11 is phi 800mm, so that the submarine cable with the wire diameter of 800mm can pass through the bell mouth conduit 11, the rotating shaft is newly welded, and the conduit bracket is heightened to 1120 mm.
As shown in fig. 1 to 4, the submarine pipeline burying machine is provided with 2 sets of jet-flushing pump sets 3, each jet-flushing pump set 3 is a low-lift large-flow axial-flow pump, the low-lift large-flow axial-flow pump is mainly used for non-contact trenching equipment, and unlike a high-lift centrifugal pump, the axial-flow pump mainly digs trenches by penetrating into soil through a cable-embedded arm, and can be suspended above the soil, and the principle is that deep trenches are formed by low-lift large-flow scouring. In the submarine cable burying mode, the submarine cable 15 passes through the bell-mouth duct 11 and then through the cable pressing member, and the upper pressing roller 8, the lower pressing roller 9 and the cable pressing idler 10 of the cable pressing member restrict the submarine cable 15 from moving up and down. The cable pressing upper swing frame driving mechanism drives the cable pressing upper swing frame 6 to swing up and down, the cable pressing upper swing frame 6 swings up, a cable pressing part is folded, the cable pressing upper swing frame 6 swings down, and the cable pressing part is put down. The cable pressing part is used for preventing water flow sprayed by the nozzles 5 from flowing in the burying deep groove, so that the submarine cable 15 is blown up, and the burying depth is not up to standard. In the submarine pipeline burying mode, the cable pressing part is retracted, the submarine pipeline burying machine is suspended above the submarine pipeline 16, and 2 nozzles 5 are symmetrically distributed on the left side and the right side of the submarine pipeline 16, so that deep burying ditches are flushed by jetting, and the burying operation of the submarine pipeline 16 is completed.
The mechanisms, components, and the like disclosed in the present embodiment can be implemented by general and conventional means known in the art, unless otherwise specified. The present subsea pipeline burying machine is not limited to what has been disclosed in the detailed description, and the embodiments presented in the examples can be extended based on the understanding of those skilled in the art, and simple alternatives made by those skilled in the art in light of the present disclosure in combination with common general knowledge are also within the scope of the present disclosure.
Claims (7)
1. The submarine pipeline burying machine is characterized by comprising a machine body frame, wherein one end of the machine body frame is provided with a cable pressing component, the cable pressing component comprises an upper cable pressing swing frame and a lower cable pressing swing frame, one end of the upper cable pressing swing frame is hinged with one end of the machine body frame, the other end of the upper cable pressing swing frame is movably connected with one end of the lower cable pressing swing frame, the lower cable pressing swing frame comprises an upper lower swing frame section and a lower swing frame section, the middle part of the upper swing frame section is hinged with the connecting end of an upper pressure roller arm, the cable pressing end of the upper pressure roller arm is provided with an upper pressure roller, the upper end of the lower swing frame section is hinged with the connecting end of a lower pressure roller arm, the cable pressing end of the lower pressure roller arm is provided with a lower pressure roller, the lower end of the lower swing frame section is provided with a cable pressing carrier roller, the upper pressure roller is arranged on a submarine cable at the upstream of conveying, and a submarine cable at the downstream of conveying is arranged on the cable pressing carrier roller, the lower pressing roller is arranged on a submarine cable on the pressing cable carrier roller, the bottom of the machine body frame is provided with a jet pump device, the jet pump device comprises a plurality of jet pump units, nozzles of the jet pump units are downwards sprayed and flushed towards a submarine pipeline burying route to form a burying deep groove, and the submarine pipeline is buried in the burying deep groove.
2. The subsea pipeline burying machine as recited in claim 1, wherein the other end of said cable upper swing frame is flexibly connected to one end of said cable lower swing frame by a shackle.
3. The submarine pipeline burying machine according to claim 1, wherein a cable-pressing upper swing frame driving mechanism is arranged at one end of the machine body frame, the cable-pressing upper swing frame driving mechanism comprises an upper swing frame power cylinder and an upper swing frame transmission arm, the tail portion of the upper swing frame power cylinder is hinged to the machine body frame, one end of the upper swing frame transmission arm is hinged to one end of the machine body frame, the output end of the upper swing frame power cylinder is hinged to the other end of the upper swing frame transmission arm, the other end of the upper swing frame transmission arm is connected with the middle portion of the cable-pressing upper swing frame through a lock chain, and the upper swing frame power cylinder drives the cable-pressing upper swing frame to swing up and down around the end hinged to the machine body frame through the upper swing frame transmission arm.
4. The submarine pipeline burying machine according to claim 1, wherein the jet-flushing pump group comprises a jet-flushing pump, a pump body of the jet-flushing pump is hinged to a jet-flushing pump support on the bottom of the machine body frame, a jet end of the jet-flushing pump is hinged to an output end of an upper jet-flushing pump power cylinder and an output end of a lower jet-flushing pump power cylinder, a tail portion of the upper jet-flushing pump power cylinder is hinged to the machine body frame above the jet end of the jet-flushing pump, a tail portion of the lower jet-flushing pump power cylinder is hinged to the machine body frame below the jet end of the jet-flushing pump, and the upper jet-flushing pump power cylinder and the lower jet-flushing pump power cylinder cooperate to drive the jet end of the jet-flushing pump to swing up and down to adjust the jet pitch angle.
5. The subsea pipeline burying machine as recited in claim 1, wherein said body frame is provided at a top portion thereof with a flared conduit assembly, said flared conduit assembly comprising a flared conduit, a middle portion of said flared conduit being mounted on a conduit support, a subsea cable being fed upstream being guided through said flared conduit into said cable pressing member.
6. The submarine pipeline burying machine according to claim 1, wherein a delivery shoe is provided on the top of one end and the other end of said body frame, and a submarine cable laid on said delivery shoe at one end of said body frame is slid into said cable pressing member.
7. The submarine pipeline burying machine according to claim 6, wherein limiting baffles are erected on both sides of the outlet of the delivery shoe at one end of the machine body frame, and submarine cables slide into the cable pressing member from the delivery shoe between the limiting baffles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110287535.1A CN115111430A (en) | 2021-03-17 | 2021-03-17 | Submarine pipeline burying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110287535.1A CN115111430A (en) | 2021-03-17 | 2021-03-17 | Submarine pipeline burying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115111430A true CN115111430A (en) | 2022-09-27 |
Family
ID=83324201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110287535.1A Pending CN115111430A (en) | 2021-03-17 | 2021-03-17 | Submarine pipeline burying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115111430A (en) |
-
2021
- 2021-03-17 CN CN202110287535.1A patent/CN115111430A/en active Pending
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