Multi-channel and multi-direction mixed type rear flushing and burying type jet water jet cutter

Abstract

The utility model belongs to the technical field of submarine cable burying robots, and particularly relates to a multi-channel and multi-direction mixed type rear flushing and burying type jet water jet cutter. The utility model aims to solve the problem that a related jet water jet cutter is poor in universality for submarine cables. According to the multi-channel and multi-direction mixed type rear flushing and burying type jet water jet cutter, the two oppositely-arranged water jet cutters are connected to the corresponding sleeve assemblies correspondingly and communicate with the pipe bodies in the sleeve assemblies, the sleeve assemblies are driven by the first driving device to slide relative to the pipe bodies in the axis direction of the pipe bodies, and therefore the interval between the two water jet cutters is adjusted; therefore, the width of a submarine cable trench formed by cutting of the jet water jet cutter can be changed, the diameter range of submarine cables where the jet water jet cutter can be buried is enlarged, and the universality of the jet water jet cutter to the submarine cables is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of submarine cable burying, and in particular to a multi-channel multi-direction hybrid backflushing buried jet water knife. Background Art

[0002] A submarine cable is a cable wrapped with insulating materials and laid on the seabed for telecommunication transmission. A jet water knife is a device used for cable laying and maintenance in an underwater environment. The jet water knife can cut the seabed to form a cable trench and bury the submarine cable in the cable trench, thereby realizing the laying of the submarine cable.

[0003] In the related art, the jet water knife has a jet water knife and a high-pressure pump. The jet water knife has a plurality of nozzles with small apertures. The high-pressure pump pressurizes water into a high-pressure water flow. After the high-pressure water flow flows into the jet water knife, it is ejected by the plurality of nozzles to form a high-speed water flow. The high-speed water flow cuts the seabed to form a cable trench. After the cable trench is formed, the submarine cable is buried in the trench, thereby realizing the laying of the submarine cable.

[0004] However, the related jet water knife is only applicable to bury submarine cables within a certain diameter range, resulting in poor versatility of the jet water knife for submarine cables. Summary of the Utility Model

[0005] In view of this, the main purpose of the embodiments of the present application is to provide a multi-channel multi-direction hybrid backflushing buried jet water knife to solve the technical problem of poor versatility of the related jet water knife for submarine cables.

[0006] To achieve the above object, the embodiments of the present application provide a multi-channel multi-direction hybrid backflushing buried jet water knife, including:

[0007] A bracket;

[0008] A water pipe group arranged on the bracket. The water pipe group includes two water pipes. The two water pipes are adjacent to each other along the width direction of the multi-channel multi-direction hybrid backflushing buried jet water knife. Each water pipe includes a pipe body and a sleeve assembly. The sleeve assembly is sleeved outside the pipe body;

[0009] A water knife group including two water knives. The two water knives are arranged oppositely, and each water knife corresponds to a water pipe one by one. The water knife is connected to the corresponding sleeve assembly and communicates with the corresponding pipe body;

[0010] A first driving device arranged on the bracket. The first driving device is connected to the sleeve assembly and is configured to drive the sleeve assembly to slide relative to the pipe body along the axial direction of the pipe body to adjust the interval between the two water knives.

[0011] In some embodiments that may include the above-mentioned embodiments, the outer wall of the sleeve assembly is constructed with a first limiting ring, and the axis of the first limiting ring is parallel to the axis of the tube body; the first driving device includes a first hydraulic cylinder, the first hydraulic cylinder is arranged on the bracket, the first hydraulic cylinder has a first piston rod, the axis of the first piston rod is parallel to the axis of the sleeve assembly, the end of the first piston rod is constructed with a limiting groove, and the first limiting ring is clamped in the limiting groove.

[0012] In some embodiments that may include the above-mentioned embodiments, a second limiting ring and a third limiting ring are arranged on the outer side of the end of the first piston rod, and the second limiting ring and the third limiting ring are arranged at intervals along the axial direction of the first piston rod, and the second limiting ring, the third limiting ring and the first piston rod form a limiting groove.

[0013] In some embodiments that may include the above-mentioned embodiments, the water jet includes a connecting seat, a backfill pipeline and a plurality of trenching pipelines, the connecting seat is connected to the sleeve assembly, the backfill pipeline and the plurality of trenching pipelines are sequentially arranged on the same side of the connecting seat along the height direction of the multi-channel, multi-directional hybrid rear-flush buried jet water jet, the backfill pipeline and the plurality of trenching pipelines are connected to the corresponding pipe body; the extension length of the plurality of trenching pipelines gradually decreases from top to bottom, the trenching pipeline located between the backfill pipeline and the trenching pipeline at the bottom end includes a shielding section and an injection section, the shielding section is opposite to the trenching pipeline below, and the injection section is located at the end of the shielding section away from the connecting seat; the bottom of the injection section and the trenching pipeline at the bottom end are both provided with a bottom nozzle, the sides of the injection section and the trenching pipeline at the bottom end are both provided with a side nozzle, and the side nozzles of the two water jets are relatively arranged; the top of the backfill pipeline is provided with a top nozzle.

[0014] In some embodiments that may include the above embodiments, the bottom nozzle includes a bottom nozzle, the bottom nozzle is connected to the trenching pipeline, a first elastic sealing tube is provided outside the bottom nozzle, the extension length of the first elastic sealing tube is greater than the extension length of the bottom nozzle, and a bottom sealing cavity is formed between the first elastic sealing tube and the end of the bottom nozzle, there are multiple bottom sealing cavities, and bottom sealing plugs are inserted into some of the bottom sealing cavities; and / or, the side nozzle includes a side nozzle, the side nozzle is connected to the trenching pipeline, a second elastic sealing tube is provided outside the side nozzle, and the extension length of the second elastic sealing tube is greater than The extension length of the lateral nozzle, and a lateral sealing cavity is formed between the end of the second elastic sealing tube and the end of the lateral nozzle, there are multiple lateral sealing cavities, and lateral sealing plugs are inserted in some of the lateral sealing cavities; and / or, the top nozzle includes a top nozzle, the top nozzle is connected to the backfill pipeline, and a third elastic sealing tube is arranged on the outer sleeve of the top nozzle, the extension length of the third elastic sealing tube is greater than the extension length of the top nozzle, and a top sealing cavity is formed between the end of the third elastic sealing tube and the end of the top nozzle, there are multiple top sealing cavities, and top sealing plugs are inserted in some of the top sealing cavities.

[0015] In some embodiments that may include the above embodiments, the sleeve assembly includes a cylinder body and a mounting seat. The mounting seat is disposed on the side wall of the cylinder body. The mounting seat has a communication cavity, and the communication cavity communicates with the pipe body. The water jet is disposed on the mounting seat. One side of the connecting seat facing the mounting seat is configured with an annular sealing groove, and the annular sealing groove surrounds the periphery of the backfill pipeline and multiple trenching pipelines. An annular sealing ring is disposed in the annular sealing groove, and the annular sealing ring abuts against the mounting seat.

[0016] In some embodiments that may include the above embodiments, the multi-channel multi-direction hybrid type backflush buried jet water knife further includes a second driving device. The second driving device is disposed on the bracket, and the second driving device is connected to the sleeve assembly. The second driving device is configured to drive the sleeve assembly to rotate around the pipe body.

[0017] In some embodiments that may include the above embodiments, a connecting rod is disposed on the outer side of the sleeve assembly, and the axis of the connecting rod is parallel to the axis of the sleeve assembly. The second driving device includes a second hydraulic cylinder. The second hydraulic cylinder is hinged to the bracket. The second hydraulic cylinder has a second piston rod. The axis of the second piston rod is perpendicular to the axis of the sleeve assembly. A connecting hole is configured at the end of the second piston rod, and the connecting rod passes through the connecting hole.

[0018] In some embodiments that may include the above embodiments, a first limiting member and a second limiting member are disposed on the bracket. A limiting gap is formed between the first limiting member and the second limiting member. The second hydraulic cylinder is clamped in the limiting gap, and both ends of the second hydraulic cylinder in the axial direction of the connecting rod respectively abut against the first limiting member and the second limiting member.

[0019] In some embodiments that may include the above embodiments, a reinforcing member is disposed between the first limiting member and the second limiting member.

[0020] The multi-channel multi-direction hybrid back-flush buried water jet cutter provided by the embodiment of the present application includes a bracket, a water pipe group, a water jet group, and a first driving device. The water pipe group is arranged on the bracket. The water pipe group includes two water pipes. The two water pipes are adjacent to each other along the width direction of the multi-channel multi-direction hybrid back-flush buried water jet cutter. Each water pipe includes a pipe body and a sleeve assembly. The sleeve assembly is sleeved outside the pipe body. The water jet group includes two water jets. The two water jets are arranged opposite to each other, and the water jets correspond to the water pipes one by one. The water jets are connected to the corresponding sleeve assemblies and communicate with the corresponding pipe bodies. The first driving device is arranged on the bracket. The first driving device is connected to the sleeve assembly and is configured to drive the sleeve assembly to slide relative to the pipe body along the axial direction of the pipe body to adjust the interval between the two water jets. Through the above arrangement, the two relatively arranged water jets are respectively connected to the corresponding sleeve assemblies and communicate with the pipe bodies in the sleeve assemblies. The first driving device drives the sleeve assembly to slide relative to the pipe body along the axial direction of the pipe body to adjust the interval between the two water jets, so that the width of the submarine cable trench formed by cutting with the multi-channel multi-direction hybrid back-flush buried water jet cutter can be changed, the diameter range of the submarine cables that can be buried by the multi-channel multi-direction hybrid back-flush buried water jet cutter is increased, and the versatility of the multi-channel multi-direction hybrid back-flush buried water jet cutter for submarine cables is improved. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the bracket, water pipe, water jet, and second hydraulic cylinder in the multi-channel multi-direction hybrid back-flush buried water jet cutter provided by the embodiment of the present application;

[0023] Figure 2 Structural schematic diagram of the bracket and water pipe in the multi-channel multi-direction hybrid back-flush buried water jet cutter provided by the embodiment of the present application;

[0024] Figure 3 For Figure 2 Cross-sectional view taken along line A-A in

[0025] Figure 4 For Figure 1 Top view of the multi-channel multi-direction hybrid back-flush buried water jet cutter in

[0026] Figure 5 For Figure 4 Cross-sectional view taken along line B-B in

[0027] Figure 6 Structural schematic diagram of the bracket, water pipe, water knife, first hydraulic cylinder and second hydraulic cylinder in the multi-channel multi-direction hybrid backflush buried jet water knife provided by the embodiment of the present application Figure 1 ;

[0028] Figure 7 Structural schematic diagram of the bracket, water pipe, water knife, first hydraulic cylinder and second hydraulic cylinder in the multi-channel multi-direction hybrid backflush buried jet water knife provided by the embodiment of the present application Figure 2 ;

[0029] Figure 8 Structural schematic diagram of the water knife in the multi-channel multi-direction hybrid backflush buried jet water knife provided by the embodiment of the present application.

[0030] Description of reference numerals:

[0031] 10 - Bracket;

[0032] 101 - First limiting member; 102 - Second limiting member;

[0033] 103 - Limiting gap; 104 - Reinforcing member;

[0034] 20 - Water pipe;

[0035] 21 - Pipe body; 211 - Communication port;

[0036] 22 - Sleeve assembly; 221 - First limiting ring;

[0037] 222 - Cylinder body; 223 - Mounting seat;

[0038] 224 - Communication cavity; 225 - Connecting rod;

[0039] 30 - Water knife;

[0040] 31 - Connecting seat; 311 - Annular sealing groove;

[0041] 312 - Annular sealing ring; 32 - Backfill pipeline;

[0042] 321 - Top spray pipe; 322 - Third elastic sealing pipe;

[0043] 323 - Top sealing cavity; 324 - Top sealing plug;

[0044] 33 - Ditch digging pipeline; 331 - Blocking section;

[0045] 332 - Jetting section; 333 - Bottom spray pipe;

[0046] 334 - First elastic sealing pipe; 335 - Bottom sealing cavity;

[0047] 336 - Bottom sealing plug; 337 - Lateral nozzle;

[0048] 338 - Second elastic sealing tube; 339 - Lateral sealing cavity;

[0049] 330 - Lateral sealing plug;

[0050] 40 - First hydraulic cylinder;

[0051] 401 - First piston rod; 402 - Second limiting ring;

[0052] 403 - Third limiting ring; 404 - Limiting groove;

[0053] 50 - Second hydraulic cylinder;

[0054] 501 - Second piston rod; 502 - Connecting hole. Detailed implementation manners

[0055] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principle of this application and are not intended to limit the protection scope of this application. Those skilled in the art can adjust it according to needs to adapt to specific application scenarios.

[0056] Secondly, it should be noted that in the description of the embodiments of this application, the terms indicating directions or positional relationships such as "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to this application.

[0057] In addition, it should also be noted that in the description of the embodiments of this application, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific situations.

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of this application.

[0059] As described in the background art, the water jet cutter in the related art has the problem of poor versatility for submarine cables. After research by the applicant, it is found that the reason for this problem is that the width of the submarine cable trench formed by the related water jet cutter is fixed and unchanged. Therefore, it can only be applicable to submarine cables within a certain diameter range. When the diameter of the submarine cable exceeds this diameter range, it will be difficult for the submarine cable trench cut by the water jet cutter to bury the submarine cable, resulting in the problem of poor versatility of the water jet cutter for submarine cables.

[0060] In view of the above technical problems, the embodiment of the present application provides a multi-channel multi-direction hybrid backflush buried water jet cutter. Two relatively arranged water cutters are respectively connected to corresponding sleeve assemblies and communicated with the pipe body in the sleeve assemblies. The sleeve assemblies are driven by a first driving device to slide relative to the pipe body along the axial direction of the pipe body, so as to adjust the interval between the two water cutters, thereby changing the width of the submarine cable trench formed by the multi-channel multi-direction hybrid backflush buried water jet cutter, increasing the diameter range of the submarine cables that can be buried by the multi-channel multi-direction hybrid backflush buried water jet cutter, and improving the versatility of the multi-channel multi-direction hybrid backflush buried water jet cutter for submarine cables.

[0061] The principles and features of the embodiments of the present application will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the embodiments of the present application and are not intended to limit the scope of the embodiments of the present application.

[0062] Reference Figure 1 As shown in the figure, the embodiment of the present application provides a multi-channel multi-direction hybrid backflush buried water jet cutter, including a robot body, a high-pressure pump, a bracket 10, a water pipe group, a water cutter group and a first driving device.

[0063] The bracket 10 is connected to the robot body.

[0064] Reference Figure 1 and Figure 2 As shown in the figure, the water pipe group includes two water pipes 20. The water pipe 20 includes a pipe body 21 and a sleeve assembly 22. The pipe body 21 is arranged on the bracket 10. The pipe bodies 21 in the two water pipes 20 are adjacent to each other along the width direction Y of the multi-channel multi-direction hybrid backflush buried water jet cutter, and the two pipe bodies 21 are separated from each other and not communicated. The sleeve assembly 22 is sleeved outside the pipe body 21, and the sleeve assembly 22 can slide relative to the pipe body 21 along the axial direction of the pipe body 21.

[0065] The high-pressure pump is arranged on the robot body. The water outlet of the high-pressure pump is communicated with the pipe body 21. The high-pressure pump pressurizes water into high-pressure water flow and transports the high-pressure water flow into the pipe body 21.

[0066] The water knife group includes two relatively arranged water knives 30. Among the two water knives 30, each water knife 30 is selectively corresponding to a water pipe 20. The water knife 30 is connected to the sleeve assembly 22 and communicates with the corresponding pipe body 21, so that the high-pressure water flow in the pipe body 21 can flow into the water knife 30.

[0067] In some possible implementation manners of the embodiment of the present application, referring to Figure 2 and Figure 3 , the sleeve assembly 22 may include a cylinder body 222 and a mounting seat 223. The axis of the cylinder body 222 may be collinear with the axis of the pipe body 21. The cylinder body 222 is sleeved outside the pipe body 21. The mounting seat 223 is arranged on the side wall of the cylinder body 222. A communication cavity 224 is provided in the mounting seat 223. A communication port 211 may be opened on one side of the pipe body 21 facing the communication cavity 224. The communication cavity 224 is connected to the pipe body 21 through the communication port 211.

[0068] Referring to Figures 1 - 5 , the water knife 30 is arranged on the mounting seat 223 and the water knife 30 communicates with the communication cavity 224. In this way, the high-pressure water flow in the pipe body 21 can flow through the communication port 211 to the communication cavity 224 and then to the water knife 30.

[0069] In some possible implementation manners of the embodiment of the present application, referring to Figure 2 , Figure 6 and Figure 7 , a first limiting ring 221 may be constructed on the outer side wall of the cylinder body 222. The axis of the first limiting ring 221 may be parallel to the axis of the cylinder body 222.

[0070] The first driving device may be a first hydraulic cylinder 40. The first hydraulic cylinder 40 is arranged on the bracket 10. The first hydraulic cylinder 40 has a first piston rod 401. The axis of the first piston rod 401 is parallel to the axis of the cylinder body 222. A limiting groove 404 may be constructed at the end of the first piston rod 401.

[0071] In some possible implementation manners of the embodiment of the present application, a second limiting ring 402 and a third limiting ring 403 may be arranged on the outer side of the end of the first piston rod 401. The second limiting ring 402 and the third limiting ring 403 are arranged at intervals along the axis direction of the first piston rod 401. The second limiting ring 402, the third limiting ring 403 and the first piston rod 401 enclose the limiting groove 404. The first limiting ring 221 is clamped in the limiting groove 404, so that the first piston rod 401 can drive the cylinder body 222 to move.

[0072] In some other possible implementation manners of the embodiment of the present application, the limiting groove 404 may be opened on the outer wall of the first piston rod 401. The first limiting ring 221 is clamped in the limiting groove 404, so that the first piston rod 401 can drive the cylinder body 222 to move.

[0073] When the diameter of the submarine cable to be buried is relatively large, the first hydraulic cylinder 40 drives the first piston rod 401 to move in a direction away from the cylinder body of the first hydraulic cylinder 40, so that the two sleeve assemblies 22 move away from each other, increasing the interval between the two water jets 30 arranged opposite to each other, thereby increasing the width of the submarine cable trench that can be cut by the multi-channel multi-direction hybrid backflush buried jet water knife (refer to Figure 7 ), enabling the multi-channel multi-direction hybrid backflush buried jet water knife to be applicable to burying submarine cables with a relatively large diameter.

[0074] When the diameter of the submarine cable to be buried is relatively small, the first hydraulic cylinder 40 drives the first piston rod 401 to move towards the cylinder body of the first hydraulic cylinder 40, so that the two sleeve assemblies 22 move towards each other, reducing the interval between the two water jets 30 arranged opposite to each other (refer to Figure 6 ), thereby reducing the width of the submarine cable trench that can be cut by the multi-channel multi-direction hybrid backflush buried jet water knife, enabling the multi-channel multi-direction hybrid backflush buried jet water knife to be applicable to burying submarine cables with a relatively small diameter.

[0075] In the multi-channel multi-direction hybrid backflush buried jet water knife in this embodiment, the first hydraulic cylinder 40 drives the sleeve assembly 22 to slide relative to the pipe body 21 along the axis direction of the pipe body 21 to adjust the interval between the two relatively arranged water jets 30, thereby changing the width of the submarine cable trench formed by the multi-channel multi-direction hybrid backflush buried jet water knife cutting, increasing the diameter range of the submarine cables that the multi-channel multi-direction hybrid backflush buried jet water knife can bury, and improving the versatility of the multi-channel multi-direction hybrid backflush buried jet water knife for submarine cables.

[0076] In some other possible implementation manners of the embodiments of the present application, the first driving device may be a first electric push rod. The first electric push rod is arranged on the bracket 10. The first electric push rod has a first telescopic rod, and the end of the first telescopic rod may be connected to the cylinder body 222. The first electric push rod drives the first telescopic rod to move to drive the sleeve assembly 22 to slide relative to the pipe body 21 along the axis direction of the pipe body 21 to adjust the interval between the two relatively arranged water jets 30, thereby changing the width of the submarine cable trench formed by the multi-channel multi-direction hybrid backflush buried jet water knife cutting, increasing the diameter range of the submarine cables that the multi-channel multi-direction hybrid backflush buried jet water knife can bury, and improving the versatility of the multi-channel multi-direction hybrid backflush buried jet water knife for submarine cables.

[0077] In some possible implementation manners of the embodiments of the present application, refer to Figure 1 、 Figure 5 and Figure 8The water jet 30 may include a connecting seat 31, a backfill pipeline 32 and a plurality of trenching pipelines 33. The connecting seat 31 is connected to the mounting seat 223. The backfill pipeline 32 and the plurality of trenching pipelines 33 are sequentially arranged on the same side of the connecting seat 31 along the height direction Z of the multi-channel multi-directional hybrid rear-flush buried jet water jet. The backfill pipeline 32 and the plurality of trenching pipelines 33 are all connected to the corresponding pipe body 21 so that the high-pressure water flow in the pipe body 21 can flow into the backfill pipeline 32 and the plurality of trenching pipelines 33.

[0078] The extension lengths of the multiple trenching pipelines 33 gradually decrease from top to bottom. The trenching pipeline 33 located between the backfill pipeline 32 and the trenching pipeline 33 at the bottom includes a shielding section 331 and an injection section 332. The shielding section 331 is opposite to the trenching pipeline 33 below, and the injection section 332 is located at the end of the shielding section 331 away from the connecting seat 31, and the lower part of the injection section 332 is not blocked by other trenching pipelines 33.

[0079] The bottom of the jet section 332 and the bottom of the trenching pipeline 33 at the bottom are both provided with bottom nozzles, which are used to cut out the edge of the submarine cable trench along the width direction Y. The bottom nozzles can form two trench edges on the seabed.

[0080] Side nozzles are arranged on the sides of the jet section 332 and the trenching pipeline 33 at the bottom. The side nozzles of the two water knives 30 are arranged opposite to each other. The side nozzles are used to cut the seabed between the two trench edges to form a submarine cable trench between the two trench edges.

[0081] A top nozzle is provided at the top of the backfill pipeline 32, which sprays upward the sand, gravel and soil cut by the bottom nozzle and the side nozzle, and sinks downward and backfills into the submarine cable trench after the submarine cable is placed in the submarine cable trench, so as to bury the submarine cable and protect it.

[0082] In some possible implementations of the present application, reference is made to Figure 5 The bottom nozzle may include a bottom nozzle 333, the bottom nozzle 333 is connected to the trenching pipeline 33, a first elastic sealing tube 334 is disposed on the outer shell of the bottom nozzle 333, the extension length of the first elastic sealing tube 334 is greater than the extension length of the bottom nozzle 333, and a bottom sealing cavity 335 is formed between the first elastic sealing tube 334 and the end of the bottom nozzle 333. There are multiple bottom sealing cavities 335, and bottom sealing plugs 336 may be inserted into some of the bottom sealing cavities 335 to block the bottom nozzle 333, reduce the number of bottom nozzles 333 that can spray high-pressure water flow, and when the water pressure in the trenching pipeline 33 remains unchanged, the water pressure and flow rate of the water flow sprayed by the unblocked bottom nozzle 333 can be increased, thereby improving the trenching effect of the bottom nozzle 333.

[0083] Since the first elastic seal has elasticity, after the bottom seal plug 336 is inserted into the bottom seal cavity 335, the first elastic seal can wrap the bottom seal plug 336, improving the sealing performance between the bottom seal plug 336 and the first elastic seal, and enhancing the plugging effect on the bottom nozzle 333.

[0084] In some possible implementation manners of the embodiments of the present application, with reference to Figure 5 and Figure 8 , the lateral nozzle may include a lateral nozzle tube 337, the lateral nozzle tube 337 is communicated with the trenching pipeline 33, a second elastic seal tube 338 is sleeved outside the lateral nozzle tube 337, the extension length of the second elastic seal tube 338 is greater than that of the lateral nozzle tube 337, and a lateral seal cavity 339 is formed between the end of the second elastic seal tube 338 and the end of the lateral nozzle tube 337. There are multiple lateral seal cavities 339, and some lateral seal cavities 339 are inserted with lateral seal plugs 330 to block the lateral nozzle tube 337, reducing the number of lateral nozzle tubes 337 that can eject high-pressure water flow. When the water pressure in the trenching pipeline 33 remains unchanged, the water pressure and flow rate of the water flow ejected from the unblocked lateral nozzle tubes 337 can be increased, improving the trenching effect of the lateral nozzle tubes 337.

[0085] Since the second elastic seal has elasticity, after the lateral seal plug 330 is inserted into the lateral seal cavity 339, the second elastic seal can wrap the lateral seal plug 330, improving the sealing performance between the lateral seal plug 330 and the second elastic seal, and enhancing the plugging effect on the lateral nozzle tube 337.

[0086] In some possible implementation manners of the embodiments of the present application, with reference to Figure 5 , the top nozzle includes a top nozzle tube 321, the top nozzle tube 321 is communicated with the backfilling pipeline 32, a third elastic seal tube 322 is sleeved outside the top nozzle tube 321, the extension length of the third elastic seal tube 322 is greater than that of the top nozzle tube 321, and a top seal cavity 323 is formed between the end of the third elastic seal tube 322 and the end of the top nozzle tube 321. There are multiple top seal cavities 323, and some top seal cavities 323 are inserted with top seal plugs 324 to block the top nozzle tube 321, reducing the number of top nozzle tubes 321 that can eject high-pressure water flow. When the water pressure in the backfilling pipeline 32 remains unchanged, the water pressure and flow rate of the water flow ejected from the unblocked top nozzle tubes 321 can be increased, improving the backfilling effect of the top nozzle tubes 321.

[0087] Since the third elastic seal has elasticity, after the top seal plug 324 is inserted into the top seal cavity 323, the third elastic seal can wrap the top seal plug 324, improving the sealing performance between the top seal plug 324 and the third elastic seal, and enhancing the plugging effect on the top nozzle tube 321.

[0088] In some possible implementations of the present application, refer to Figure 1 , Figure 5 and Figure 8 The connecting seat 31 may be configured with an annular sealing groove 311 on one side facing the mounting seat 223, and the annular sealing groove 311 is arranged around the periphery of the backfill pipeline 32 and the plurality of trenching pipelines 33. An annular sealing ring 312 may be arranged in the annular sealing groove 311, and the annular sealing ring 312 abuts against the mounting seat 223, so as to seal the connection seat 31 and the mounting seat 223 through the annular sealing ring, reduce the possibility of water leakage between the mounting seat 223 and the connecting seat 31, thereby reducing the pressure loss of the water flow, and improving the trenching effect of the water knife 30.

[0089] In some embodiments, the multi-channel multi-directional hybrid backwash submerged jet water jet may further include a second driving device.

[0090] In some possible implementations of the present application, reference is made to Figure 1 The second driving device can be a second hydraulic cylinder 50, which is hinged to the bracket 10. The second hydraulic cylinder 50 has a second piston rod 501. The axis of the second piston rod 501 is perpendicular to the axis of the sleeve assembly 22. The end of the second piston rod 501 is configured with a connecting hole 502, wherein the end of the second piston rod 501 is the end of the second piston rod 501 that is away from the cylinder body of the second hydraulic cylinder 50.

[0091] A connecting rod 225 may be provided on the outside of the sleeve assembly 22 , the axis of the connecting rod 225 is parallel to the axis of the sleeve assembly 22 , the connecting rod 225 is passed through the connecting hole 502 , the second piston rod 501 may rotate around the connecting rod 225 , and the connecting rod 225 may slide relative to the second piston rod 501 .

[0092] The second hydraulic cylinder 50 drives the second piston rod 501 to move along its own axis in a direction away from the cylinder body of the second hydraulic cylinder 50, so as to drive the sleeve assembly 22 and the water knife 30 to rotate downward, thereby opening the water knife 30 (refer to Figure 7 ) to facilitate cutting of the seabed.

[0093] The second hydraulic cylinder 50 drives the second piston rod 501 to move along its own axis toward the cylinder body of the second hydraulic cylinder 50, so as to drive the sleeve assembly 22 and the water knife 30 to rotate upward, thereby closing the water knife 30 (refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 ) so that the multi-channel multi-directional mixed back-flush buried jet water jet can move on the seabed when trenching is not taking place, or the multi-channel multi-directional mixed back-flush buried jet water jet can be recovered.

[0094] In some possible implementations of the present application, reference is made to Figure 1 The bracket 10 may be provided with a first limiting member 101 and a second limiting member 102 , and the first limiting member 101 and the second limiting member 102 may both be plate-shaped or column-shaped.

[0095] A limiting gap 103 is formed between the first limiting member 101 and the second limiting member 102, and the second hydraulic cylinder 50 is clamped in the limiting gap 103, and the two ends of the second hydraulic cylinder 50 along the axial direction of the connecting rod 225 are respectively abutted against the first limiting member 101 and the second limiting member 102. The first limiting member 101 and the second limiting member 102 limit the second hydraulic cylinder 50 from swinging along the axial direction of the connecting rod 225 to improve the stability of the second hydraulic cylinder 50 when driving the water jet 30 to rotate.

[0096] In some possible implementations of the present application, reference is made to Figure 1 A reinforcing member 104 may be provided between the first limiting member 101 and the second limiting member 102. The reinforcing member 104 may be in a plate or column shape. One end of the reinforcing member 104 is connected to the first limiting member 101, and the other end of the reinforcing member 104 is connected to the second limiting member 102. In this way, the reinforcing member 104 is supported between the first limiting member 101 and the second limiting member 102 to improve the structural strength of the first limiting member 101 and the second limiting member 102, reduce the possibility of the width of the limiting gap 103 changing, and thus improve the limiting effect on the second hydraulic cylinder 50.

[0097] In some other possible implementations of the embodiments of the present application, the second driving device can be a second electric push rod, which is hinged to the bracket 10, and the second electric push rod has a second telescopic rod. The end of the second telescopic rod can be constructed with a through hole, wherein the end of the second telescopic rod is that end of the second telescopic rod that is away from the second electric push rod body.

[0098] A connecting rod 225 may be provided on the outside of the sleeve assembly 22, the axis of the connecting rod 225 is parallel to the axis of the sleeve assembly 22, the connecting rod 225 is passed through the through hole, the second telescopic rod may rotate around the connecting rod 225, and the connecting rod 225 may slide relative to the second telescopic rod.

[0099] The second electric push rod pushes the second telescopic rod to move along its own axis in a direction away from the second electric push rod body, so as to drive the sleeve assembly 22 and the water knife 30 to rotate downward, thereby opening the water knife 30 to facilitate cutting the seabed.

[0100] The second electric push rod drives the second telescopic rod to move along its own axis towards the second electric push rod body, so as to drive the sleeve assembly 22 and the water knife 30 to rotate upward, thereby closing the water knife 30, so as to facilitate the multi-channel and multi-directional hybrid rear-flush buried jet water knife to travel on the seabed when no trench is dug, or to recover the multi-channel and multi-directional hybrid rear-flush buried jet water knife.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-channel and multi-direction hybrid backflush buried water jet, characterized in that Comprising: A bracket (10); A water pipe group arranged on the bracket (10), the water pipe group includes two water pipes (20), the two water pipes (20) are adjacent to each other along the width direction of the multi-channel multi-direction hybrid backflushing buried jet water knife, the water pipe (20) includes a pipe body (21) and a sleeve assembly (22), and the sleeve assembly (22) is sleeved outside the pipe body (21); A water knife group including two water knives (30), the two water knives (30) are arranged oppositely, and the water knives (30) correspond to the water pipes (20) one by one. The water knife (30) is connected to the corresponding sleeve assembly (22) and communicates with the corresponding pipe body (21); A first driving device arranged on the bracket (10), the first driving device is connected to the sleeve assembly (22), and the first driving device is configured to drive the sleeve assembly (22) to slide relative to the pipe body (21) along the axial direction of the pipe body (21) to adjust the interval between the two water knives (30).

2. The multi-channel multi-direction hybrid post-flush buried water jet according to claim 1, characterized in that A first limiting ring (221) is formed on the outer side wall of the sleeve assembly (22), and the axis of the first limiting ring (221) is parallel to the axis of the pipe body (21); The first driving device includes a first hydraulic cylinder (40), the first hydraulic cylinder (40) is arranged on the bracket (10), the first hydraulic cylinder (40) has a first piston rod (401), the axis of the first piston rod (401) is parallel to the axis of the sleeve assembly (22), and a limiting groove (404) is formed at the end of the first piston rod (401). The first limiting ring (221) is clamped in the limiting groove (404).

3. The multi-channel multi-direction hybrid post-flush buried water jet according to claim 2, wherein A second limiting ring (402) and a third limiting ring (403) are arranged on the outer side of the end of the first piston rod (401). The second limiting ring (402) and the third limiting ring (403) are arranged at intervals along the axial direction of the first piston rod (401). The second limiting ring (402), the third limiting ring (403) and the first piston rod (401) enclose the limiting groove (404).

4. The multi-channel multi-direction hybrid post-flush buried water jet according to any one of claims 1-3, characterized in that, The water knife (30) includes a connecting seat (31), a backfill pipeline (32) and a plurality of trenching pipelines (33). The connecting seat (31) is connected to the sleeve assembly (22). The backfill pipeline (32) and the plurality of trenching pipelines (33) are sequentially arranged on the same side of the connecting seat (31) along the height direction of the multi-channel multi-direction hybrid backflushing buried jet water knife. The backfill pipeline (32) and the plurality of trenching pipelines (33) are both communicated with the corresponding pipe body (21); The extension lengths of the multiple trench pipelines (33) gradually decrease from top to bottom. The trench pipeline (33) between the backfill pipeline (32) and the bottom trench pipeline (33) includes a shielding section (331) and a spraying section (332). The shielding section (331) faces the lower trench pipeline (33), and the spraying section (332) is located at one end of the shielding section (331) away from the connecting seat (31). Bottom nozzles are provided at the bottoms of both the spraying section (332) and the bottom trench pipeline (33), and side nozzles are provided on the sides of both the spraying section (332) and the bottom trench pipeline (33). The side nozzles of the two water jets (30) are arranged oppositely. A top nozzle is provided at the top of the backfill pipeline (32).

5. The multi-channel multi-direction hybrid post-flush buried water jet according to claim 4, characterized in that, The bottom nozzle includes a bottom nozzle pipe (333). The bottom nozzle pipe (333) communicates with the trench pipeline (33). A first elastic sealing pipe (334) is sleeved outside the bottom nozzle pipe (333). The extension length of the first elastic sealing pipe (334) is greater than that of the bottom nozzle pipe (333). A bottom sealing cavity (335) is formed between the ends of the first elastic sealing pipe (334) and the bottom nozzle pipe (333). There are multiple bottom sealing cavities (335), and bottom sealing plugs (336) are inserted into some of the bottom sealing cavities (335); and / or, The side nozzle includes a side nozzle pipe (337). The side nozzle pipe (337) communicates with the trench pipeline (33). A second elastic sealing pipe (338) is sleeved outside the side nozzle pipe (337). The extension length of the second elastic sealing pipe (338) is greater than that of the side nozzle pipe (337). A side sealing cavity (339) is formed between the ends of the second elastic sealing pipe (338) and the side nozzle pipe (337). There are multiple side sealing cavities (339), and side sealing plugs (330) are inserted into some of the side sealing cavities (339); and / or, The top nozzle includes a top nozzle pipe (321). The top nozzle pipe (321) communicates with the backfill pipeline (32). A third elastic sealing pipe (322) is sleeved outside the top nozzle pipe (321). The extension length of the third elastic sealing pipe (322) is greater than that of the top nozzle pipe (321). A top sealing cavity (323) is formed between the ends of the third elastic sealing pipe (322) and the top nozzle pipe (321). There are multiple top sealing cavities (323), and top sealing plugs (324) are inserted into some of the top sealing cavities (323).

6. The multi-channel multi-direction hybrid rear-flush buried water jet according to claim 5, characterized in that, The sleeve assembly (22) includes a cylinder body (222) and a mounting base (223). The mounting base (223) is arranged on the side wall of the cylinder body (222). A communication cavity (224) is formed in the mounting base (223). The communication cavity (224) communicates with the pipe body (21). The water jet (30) is arranged in the mounting base (223). One side of the connecting seat (31) facing the mounting base (223) is configured with an annular sealing groove (311). The annular sealing groove (311) surrounds the periphery of the backfill pipeline (32) and a plurality of the trenching pipelines (33). An annular sealing ring (312) is arranged in the annular sealing groove (311). The annular sealing ring (312) abuts against the mounting base (223).

7. The multi-channel multi-direction hybrid backward-flushing buried water jet cutter according to any one of claims 1-3, characterized in that, The multi-channel multi-direction hybrid backflushing buried jet water knife further includes a second driving device. The second driving device is arranged on the bracket (10). The second driving device is connected to the sleeve assembly (22). The second driving device is configured to drive the sleeve assembly (22) to rotate around the pipe body (21).

8. The multi-channel multi-direction hybrid back-flush buried water jet according to claim 7, wherein, A connecting rod (225) is arranged on the outer side of the sleeve assembly (22). The axis of the connecting rod (225) is parallel to the axis of the sleeve assembly (22). The second driving device includes a second hydraulic cylinder (50). The second hydraulic cylinder (50) is hinged to the bracket (10). The second hydraulic cylinder (50) has a second piston rod (501). The axis of the second piston rod (501) is perpendicular to the axis of the sleeve assembly (22). A connecting hole (502) is configured at the end of the second piston rod (501). The connecting rod (225) passes through the connecting hole (502).

9. The multi-channel multi-direction hybrid post-flush buried water jet according to claim 8, characterized in that, A first limiting member (101) and a second limiting member (102) are arranged on the bracket (10). A limiting gap (103) is formed between the first limiting member (101) and the second limiting member (102). The second hydraulic cylinder (50) is clamped in the limiting gap (103). And both ends of the second hydraulic cylinder (50) in the axial direction of the connecting rod (225) respectively abut against the first limiting member (101) and the second limiting member (102).

10. The multi-channel multi-direction hybrid post-flush buried water jet cutter according to claim 9, characterized in that, A reinforcing member (104) is arranged between the first limiting member (101) and the second limiting member (102).

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