Coulter with hydraulic jetting capacity and underwater ditching equipment

Abstract

The invention belongs to the technical field of underwater ditching equipment, and particularly relates to a coulter with hydraulic jetting capacity and underwater ditching equipment, the coulter comprises a coulter frame, a plurality of jetting assemblies and a plurality of auxiliary cutters, the coulter frame is connected with a high-pressure water pipe, and the coulter frame is hollow to form a containing cavity; the spraying assembly comprises a fixing plate arranged on the inclined side plate and needle-shaped nozzles, a plurality of through holes are formed in the fixing plate, the nozzles are arranged in the through holes and the water outlet holes, and the ends of the nozzles do not exceed the surface of the fixing plate; the auxiliary cutter is arranged on the mounting plate, high-pressure seawater jet flow is sprayed and flushed to a seabed soil layer to be cut in front of the auxiliary cutter at a certain inclination angle through the needle-shaped nozzle assembled on the front inclined side plate, the impact effect is improved, the seabed soil layer can be easily cut through the auxiliary cutter under the strong spraying and flushing effect of the nozzle, and the seabed soil layer is prevented from being damaged. Therefore, the coulter is high in operation efficiency, reliability and durability, and is beneficial for realizing large-depth submarine cable laying.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater trenching equipment, and in particular relates to a plow with water jetting capability and underwater trenching equipment. Background Art

[0002] Underwater trenchers are mainly used to plow trenches on the seabed for laying optical cables, and the plows they are equipped with play a decisive role in the trenching ability of underwater trenchers.

[0003] However, the high-pressure water column of the current underwater trenching machine plow has a slow excavation speed for the seabed formed by hard clay or sand, and it is difficult to flush stones out of the gully, which reduces the trenching efficiency of the entire underwater trenching machine equipment. In addition, some underwater trenching machine plows, although the plow body is provided with a high-pressure water pipe and the water spray hole is set at the bottom of the rear side of the plow head, the spray capacity of the water spray hole is weak. At the same time, the position of the water spray hole does not significantly enhance the plow operation ability, and it is easy to rub and wear, and the reliability is not high. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a plow and underwater trenching equipment with water jetting capability, which has excellent performance, is easy to assemble and disassemble, has strong applicability, and has high reliability. At the same time, the trenching depth can be adjusted through a variety of plow assembly forms.

[0005] The present invention provides a plow with water jetting capability, comprising: A plowshare frame, wherein a high-pressure water pipe is connected to the plowshare frame, and the plowshare frame is hollow inside to form a cavity for temporarily storing water delivered by a high-pressure water pump through the high-pressure water pipe; an inclined side plate and a mounting plate are sequentially provided at the front end of the plowshare frame, and a plurality of water outlet holes are opened on the inclined side plate; A plurality of spray assemblies, each of which comprises a fixing plate disposed on the inclined side plate and a needle-shaped nozzle, wherein the fixing plate is provided with a plurality of through holes, the nozzle is disposed in the through holes and the water outlet, and the end of the nozzle does not exceed the surface of the fixing plate; and A plurality of auxiliary knives are arranged on the mounting plate; the extending direction of the nozzle is located in front of the auxiliary knives.

[0006] Optionally, the injection assembly further comprises a needle-shaped mounting seat, the mounting seat is gap-matched with the water outlet, the rear end face of the mounting seat abuts against the inclined side plate, the nozzle is arranged in the mounting seat, and the nozzle abuts against the rear end of the mounting seat and the fixed plate in the length direction respectively.

[0007] Optionally, a boss 1 is provided in the water outlet, the rear end surface of the mounting seat abuts against the boss 1, a boss 2 is provided in the through hole, a step is provided on the outer wall of the nozzle, and the nozzle abuts against the boss 2 via the step.

[0008] Optionally, an annular groove is provided in the mounting seat, a sealing ring 1 is provided in the annular groove, and the sealing ring 1 is interference fit with the nozzle.

[0009] Optionally, the plow with water jetting capability also includes a plow assembly, which is disposed on the plow frame and located adjacent to the inclined side plate. The plow assembly includes a plow body disposed on the plow frame, a soil turning piece disposed on the outside of the plow body, and a plowshare disposed at the front end of the plow body.

[0010] Optionally, the plow body is provided with connecting plate 1 and connecting plate 2, and the connecting plate 1 and connecting plate 2 are respectively provided with pin hole 1 and pin hole 2 which are axially perpendicular to each other; the plow blade frame is provided with mounting hole 1, mounting hole 2, groove 1 and groove 2, and the side wall of groove 1 is provided with mounting hole 3 which passes through mounting hole 1 and the cavity, and the connecting plate 1 and connecting plate 2 are respectively arranged in groove 2 and groove 2, and the pin hole 1 and pin hole 2 are respectively aligned with mounting hole 3 and mounting hole 2 and fixed by a pin shaft.

[0011] Optionally, an annular groove 1 is provided on one side wall of the plow body close to the inclined side plate, a sealing ring 2 is provided in the annular groove 1, and an annular groove 2 is provided on one side of the corresponding plow blade frame, and the sealing ring 2 can be embedded in the annular groove 2.

[0012] Optionally, the soil turning piece includes side plate one, side plate two, side plate three and a conical head, and side plate one, side plate two and side plate three together form a hollow triangular prism-shaped body, and the conical head is fixed to the front end of the hollow triangular prism-shaped body and aligned with the front end of the plow body.

[0013] Optionally, a plurality of lifting ears are provided on the top of the plowshare frame, and a plurality of groups of mounting holes four are provided on the rear side of the plowshare frame, and the lifting ears and mounting holes four are used for assembling and fixing the plowshare frame to the underwater trencher.

[0014] The present invention also provides an underwater trenching device, comprising the plow blade with water jetting capability and an underwater trenching machine.

[0015] The beneficial effect of the present invention is that seawater is transported to the cavity in the plow cutter frame by connecting the high-pressure water pipe to the high-pressure water pump, and the cavity is used for temporary storage of the seawater transported by the high-pressure water pipe, has a good pressure-maintaining effect, and enables each nozzle to continuously and stably spray water, and through the needle-shaped nozzle installed on the front inclined side plate, the high-pressure seawater jet is sprayed at a certain inclination angle onto the seabed soil layer to be cut in front of the auxiliary knife, thereby increasing the impact effect, and the auxiliary knife can cut the seabed soil layer more easily under the strong spraying action of the nozzle; in addition, the nozzle is positioned by the through hole and the water outlet of the fixed plate, and the end face of the needle-shaped nozzle does not exceed the surface of the fixed plate. When the plow cutter is operating, the nozzle is not easily damaged by collision and friction with foreign objects, so that the plow cutter has high operating efficiency, reliability and durability, which is conducive to the laying of submarine cables at great depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a plow provided by an embodiment of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of a plowshare frame provided in an embodiment of the present invention; Figure 3 A cross-sectional schematic diagram of a spray assembly provided by an embodiment of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a plow assembly provided in an embodiment of the present invention; Figure 5 A front view of a coulter provided in accordance with an embodiment of the present invention.

[0017] In the figure: 11, plow blade frame; 111, oblique side plate; 1111, water outlet; 111-1, boss 1; 112, mounting plate; 113, high-pressure water pipe; 114, fixing hole; 115, mounting hole 1; 1151, baffle 1; 116, mounting hole 2; 1161, baffle 2; 117, groove 1; 118, groove 2; 118-1, mounting hole 3; 119, annular groove 2; 1110, mounting hole 4; 1112, narrow groove; 1113, cylindrical rod; 12, injection assembly; 121, fixing plate; 1211, boss Platform 2; 122, nozzle; 123, mounting seat; 124, sealing ring 1; 125, flat head screw; 126, bolt; 13, auxiliary knife; 14, plow blade assembly; 141, plow body; 142, plow head; 143, soil turning part; 1431, side plate 1; 1432, side plate 2; 1433, side plate 3; 1434, conical head; 144, connecting plate 1; 1441, pin hole 1; 145, connecting plate 2; 1451, pin hole 2; 146, annular groove 1; 147, wear-resistant plate 1; 15, lifting ear; 16, wear-resistant plate 2. DETAILED DESCRIPTION

[0018] like Figure 1-5As shown, the present invention provides a plow with water jetting capability, comprising: a plow frame 11, a plurality of jet assemblies 12 and a plurality of auxiliary knives 13, the plow frame 11 is connected to a high-pressure water pipe 113, and the plow frame 11 is hollow inside to form a cavity for temporarily storing water delivered by a high-pressure water pump through the high-pressure water pipe 113; the front end of the plow frame 11 is provided with an inclined side plate 111 and a mounting plate 112 in sequence, and the inclined side plate 111 is provided with a plurality of water outlet holes 1111; the jet assembly 12 comprises a fixing plate 121 and a needle-shaped nozzle 122 arranged on the inclined side plate 111, the fixing plate 121 is provided with a plurality of through holes, the nozzle 122 is arranged in the through holes and the water outlet holes 1111, and the end of the nozzle 122 does not exceed the surface of the fixing plate 121; the auxiliary knife 13 is arranged on the mounting plate 112; the extension direction of the nozzle 122 is located in front of the auxiliary knife 13.

[0019] Compared with the prior art, the plow with hydraulic jetting capability provided by the present invention utilizes a high-pressure water pipe 113 to connect a high-pressure water pump to transport seawater to a cavity in the plow frame 11. The cavity is used for temporary storage of seawater transported by the high-pressure water pipe 113, has a good pressure-maintaining effect, and enables each nozzle 122 to continuously and stably jet water. Through the needle-shaped nozzle 122 mounted on the front oblique side plate 111, the high-pressure seawater jet is sprayed at a certain inclination angle onto the seabed soil layer to be cut in front of the auxiliary knife 13, thereby increasing the impact effect. The auxiliary knife 13 can easily cut the seabed soil layer under the strong jetting action of the nozzle 122. In addition, the nozzle 122 is positioned through the through hole of the fixing plate 121 and the water outlet 1111, and the end face of the needle-shaped nozzle 122 does not exceed the surface of the fixing plate 121. When the plow is operating, the nozzle 122 is not easily damaged by collision and friction with foreign objects, so that the plow has high operating efficiency, reliability and durability, which is conducive to the laying of submarine cables at great depths.

[0020] In this embodiment, please refer to Figure 3 The spray assembly 12 also includes a needle-shaped mounting seat 123, which is in clearance fit with the water outlet 1111, and the rear end face of the mounting seat 123 abuts against the inclined side plate 111. The nozzle 122 is arranged in the mounting seat 123, and the nozzle 122 abuts against the rear end of the mounting seat 123 and the fixing plate 121 in the length direction. In this way, the end of the mounting seat 123 does not exceed the inclined side plate 111, and the end of the mounting seat 123 can be consistent with the end of the nozzle 122. The nozzle 122 does not need to be fixed by welding, which ensures the smoothness of the surface of the nozzle 122, which not only makes the assembly and replacement of the nozzle 122 more convenient, but also does not affect the speed of the sprayed water flow, and the water flow will not be deformed and dispersed, which ensures the consistency and stability of the water spray impact force.

[0021] Specifically, a boss 111-1 is provided in the water outlet 1111, the rear end face of the mounting seat 123 abuts against the boss 111-1, a boss 2 1211 is provided in the through hole, a step is provided on the outer wall of the nozzle 122, the nozzle 122 abuts against the boss 2 1211 through the step, and the mounting seat 123 is fixed to the inclined side plate 111 by a flat head screw 125 close to the through hole, so as to firmly fix the nozzle 122. Of course, multiple bolts 126 can also be added at the front end of the inclined side plate 111. The bolts 126 fix the plate 121, the fixing holes 114 at the front end of the inclined side plate 111 and the mounting plate 112, thereby improving the stability of the connection between the fixing plate 121 and the plow frame 11, and the mounting plate 112 is fixed to the back side of the inclined side plate 111 through multiple bolts 126, reducing the connection structure. In order to ensure that the back side of the plow frame 11 and the back side of the mounting plate 112 are flat and consistent, a groove is provided on the back side of the inclined side plate 111, and the rear end of the mounting plate 112 fits into the groove.

[0022] In this embodiment, an annular groove is provided in the mounting seat 123, and the annular groove is provided on the inner wall of the mounting seat 123. A sealing ring 124 is provided in the annular groove. The sealing ring 124 is interference fit with the nozzle 122. The mounting seat 123 and the nozzle 122 are first assembled together. The sealing ring 124 can prevent the nozzle 122 from escaping from the mounting seat 123, and then they are assembled into the water outlet 1111, so that the installation of the nozzle 122 is more convenient. In addition, the split structural design of the mounting seat 123 and the nozzle 122 has a simpler profile and is easier to manufacture than directly manufacturing an integral component.

[0023] In this embodiment, please refer to Figure 1 and Figure 5 The plow with water jetting capability also includes a plow assembly 14, which is arranged on the plow frame 11 and located adjacent to the inclined side plate 111. The plow assembly 14 includes a plow body 141 arranged on the plow frame 11, a soil turning piece 143 arranged on the outside of the plow body 141, and a plowshare 142 arranged at the front end of the plow body 141. With such arrangement, the plowshare assembly 14 can be fixed to the bottom of the plowshare frame 11 by welding, screwing or pinning, the injection assembly 12 and the auxiliary blade 13 are located above the plowshare assembly 14, the plowshare head 142 is located at the front end to break the soil, and the soil turning piece 143 then squeezes the soil layer outward, the high-pressure water flow ejected by the injection assembly 12 can soften the soil layer, the auxiliary blade 13 can easily break the soil layer, and together with the inclined side plate 111 and the profile of the plowshare frame 11 and the plowshare assembly 14, a groove of a certain depth is formed; the angle of the plowshare can be adjusted to make its front end vertical or inclined to the seabed to cope with soil layers of different hardness, and can be used to adjust the trenching depth.

[0024] Specifically, see Figure 4The top of the plow body 141 is welded with a connecting plate 144 and a connecting plate 2 145 arranged at intervals. The connecting plate 144 and the connecting plate 2 145 are respectively provided with a pin hole 1441 and a pin hole 2 1451 which are axially perpendicular to each other; the plow frame 11 is provided with a mounting hole 115, a mounting hole 116, a groove 117 and a groove 2 118, the groove 117 is located in front of the mounting hole 115, the groove 2 118 divides the mounting hole 2 116 into two parts horizontally, the side wall of the groove 117 is provided with a mounting hole 3 118-1 which passes through the mounting hole 115 and the cavity, the connecting plate 144 and the connecting plate 2 145 are respectively arranged in the groove 117 and the groove 2 118, the pin hole 1441 and the pin hole 2 1451 are respectively aligned with the mounting hole 3 118-1 and the mounting hole 2 116 and fixed by the pin shaft, thereby completing the assembly of the plow assembly 14. The mounting hole 115 is a waist-shaped hole used for assembling components and maintenance.

[0025] In order to make the bottom of the plow assembly 14 flush with the bottom surface of the rear half of the plow frame 11, the profile of the plow frame 11 where the plow assembly 14 is assembled is a concave L-shape.

[0026] In order to prevent sea mud from entering the interior of the mounting hole 115 and the mounting hole 116, a baffle plate 1151 and a baffle plate 2 1161 are respectively installed at the ends of the mounting hole 115 and the mounting hole 2 116 by a plurality of screws.

[0027] In this embodiment, an annular groove 146 is provided on one side wall of the plow body 141 close to the inclined side plate 111, and a sealing ring 2 (not shown in the figure) is provided in the annular groove 146. A corresponding annular groove 119 is provided on one side of the plow blade frame 11, and the sealing ring 2 can be embedded in the annular groove 119.

[0028] Specifically, the front part of the plow body 141 fits with the ends of the oblique side plate 111 and the mounting plate 112. The oblique side plate 111 and the mounting plate 112 are relatively thin and are not suitable for connection with bolts 126. The plow assembly 14 may vibrate during the soil breaking process, causing collision and friction with the plow frame 11. A sealing ring 2 is provided between the plow body 141 and the plow frame 11, which can reduce the friction and wear between the plow frame 11 and the plow assembly 14, and can also prevent the loss of liquid flow from the high-pressure water pump. Furthermore, a wear-resistant plate 147 is welded on the top surface of the plow body 141, which can further reduce the friction and wear of the plow body 141.

[0029] In this embodiment, the soil turning member 143 includes a side plate 1431, a side plate 1432, a side plate 1433 and a conical head 1434. The side plate 1431, the side plate 1432 and the side plate 1433 together form a hollow triangular prism-shaped body. The conical head 1434 is fixed to the front end of the hollow triangular prism-shaped body and is aligned with the front end of the plow body 141.

[0030] Specifically, side plate 1 1431, side plate 2 1432, side plate 3 1433 and conical head 1434 are all made of steel plates. Conical head 1434 is welded to the front end of the hollow triangular prism-shaped body. Side plate 1431 is attached to the side of the plow body 141 and fixed by screws or welding. The hollow triangular prism-shaped body is fixed on the plow body 141 in an inverted triangle shape. Therefore, during the operation of the plow blade assembly 14, the groove formed is roughly inverted trapezoidal, which is beneficial to improve the straightness of the submarine optical cable after positioning.

[0031] In this embodiment, a plurality of lifting ears 15 are provided on the top of the plow blade frame 11, and a plurality of groups of mounting holes 1110 are provided on the rear side of the plow blade frame 11. The lifting ears 15 and the mounting holes 1110 are both used for assembling and fixing the plow blade frame 11 with the underwater trencher, wherein the lifting ears 15 are used for hinged connection of the plow blade frame 11 with the underwater trencher, and the mounting holes 1110 are used for assembling the plow blade frame 11 with certain components of the underwater trencher so as to adjust the working posture of the plow blade.

[0032] In this embodiment, a plurality of narrow grooves 1112 are provided in parallel on the surface of the plowshare frame 11 for assembling relatively narrow iron plates so as to be intermittently welded with the wear-resistant plate 16. A plurality of wear-resistant plates 16 are laid at intervals on one side or both sides of the plowshare frame 11. The wear-resistant plate 16 intermittently welded to the non-working surface of the plowshare frame 11 and the plowshare assembly 14 has a metal material at the bottom for easy welding, and a rubber material at the top for avoiding friction and wear during the operation of the mechanical plowshare, thereby protecting the entire mechanical plowshare from damage and reducing the weight of the mechanical plowshare, which is in line with the design concept of underwater trenching equipment. The exposed space between the front and back side plates at the rear end of the plowshare frame 11 is used as a cable laying groove.

[0033] The plowshare frame 11 is provided with a plurality of penetrating cylindrical rods 1113 to fix the front and back side plates of the plowshare frame 11 by welding, so that the front and back side plates of the plowshare frame 11 are not easily deformed by external forces.

[0034] In this embodiment, the front end cross section of the auxiliary knife 13 is trapezoidal, and its strength and shape reduce the replacement frequency of the auxiliary knife 13.

[0035] The present invention also provides an underwater trenching device, comprising the plow with water jetting capability and an underwater trenching machine. Through the plow with water jetting capability, the underwater trenching device can efficiently dig trenches on the seabed for laying submarine optical cables or electrical cables.

[0036] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0037] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A coulter with water jetting capability, characterized in that: include: A plowshare frame (11), wherein a high-pressure water pipe (113) is connected to the plowshare frame (11), and the plowshare frame (11) is hollow inside to form a cavity for temporarily storing water delivered by a high-pressure water pump through the high-pressure water pipe (113); a front end of the plowshare frame (11) is provided with an inclined side plate (111) and a mounting plate (112) in sequence, and a plurality of water outlet holes (1111) are provided on the inclined side plate (111); A plurality of spray assemblies (12), the spray assemblies (12) comprising a fixing plate (121) and a needle-shaped nozzle (122) disposed on the inclined side plate (111), the fixing plate (121) being provided with a plurality of through holes, the nozzle (122) being disposed in the through holes and the water outlet hole (1111), and the end of the nozzle (122) not protruding beyond the surface of the fixing plate (121); and A plurality of auxiliary knives (13), wherein the auxiliary knives (13) are arranged on a mounting plate (112); and the extending direction of the nozzle (122) is located in front of the auxiliary knives (13).

2. The plow with water jetting capability according to claim 1, characterized in that: The spray assembly (12) further comprises a needle-shaped mounting seat (123), the mounting seat (123) being clearance-matched with the water outlet hole (1111), the rear end surface of the mounting seat (123) being in contact with the inclined side plate (111), the nozzle (122) being arranged in the mounting seat (123), and the nozzle (122) being in contact with the rear end of the mounting seat (123) and the fixing plate (121) in the length direction.

3. The plow with water jetting capability according to claim 2, characterized in that: A boss 1 (111-1) is provided in the water outlet hole (1111), a rear end surface of the mounting seat (123) abuts against the boss 1 (111-1), a boss 2 (1211) is provided in the through hole, a step is provided on the outer wall of the nozzle (122), and the nozzle (122) abuts against the boss 2 (1211) via the step.

4. The plow with water jetting capability according to claim 3, characterized in that: An annular groove is provided in the mounting seat (123), a sealing ring (124) is provided in the annular groove, and the sealing ring (124) is interference-fitted with the nozzle (122).

5. The plow with water jetting capability according to any one of claims 1 to 4, characterized in that: The invention also comprises a plowshare assembly (14), wherein the plowshare assembly (14) is arranged on the plowshare frame (11) and is located adjacent to the inclined side plate (111), and the plowshare assembly (14) comprises a plow body (141) arranged on the plowshare frame (11), a soil turning piece (143) arranged outside the plow body (141), and a plowshare head (142) arranged at the front end of the plow body (141).

6. The plow with water jetting capability according to claim 5, characterized in that: The plow body (141) is provided with a connecting plate 1 (144) and a connecting plate 2 (145), and the connecting plate 1 (144) and the connecting plate 2 (145) are respectively provided with a pin hole 1 (1441) and a pin hole 2 (1451) which are axially perpendicular to each other; the plow blade frame (11) is provided with a mounting hole 1 (115), a mounting hole 2 (116), a groove 1 (117) and a groove 2 (118), and the side wall of the groove 1 (117) is provided with a mounting hole 3 (118-1) which passes through the mounting hole 1 (115) and the cavity, and the connecting plate 1 (144) and the connecting plate 2 (145) are respectively arranged in the groove 2 (118) and the groove 2 (118), and the pin hole 1 (1441) and the pin hole 2 (1451) are respectively aligned with the mounting hole 3 (118-1) and the mounting hole 2 (116) and fixed by a pin shaft.

7. The plow with water jetting capability according to claim 5, characterized in that: A first annular groove (146) is provided on a side wall of the plow body (141) close to the inclined side plate (111), a second sealing ring is provided in the first annular groove (146), and a second annular groove (119) is provided on one side of the corresponding plow blade frame (11), and the second sealing ring can be embedded in the second annular groove (119).

8. The plow with water jetting capability according to claim 5, characterized in that: The soil turning member (143) comprises a first side plate (1431), a second side plate (1432), a third side plate (1433) and a conical head (1434); the first side plate (1431), the second side plate (1432) and the third side plate (1433) together form a hollow triangular prism-shaped body; the conical head (1434) is fixed to the front end of the hollow triangular prism-shaped body and is aligned with the front end of the plow body (141).

9. The plow with water jetting capability according to claim 1, characterized in that: A plurality of lifting ears (15) are provided on the top of the plowshare frame (11), and a plurality of groups of mounting holes (1110) are provided on the rear side of the plowshare frame (11). The lifting ears (15) and mounting holes (1110) are used for assembling and fixing the plowshare frame (11) and the underwater trenching machine.

10. An underwater trenching device, characterized in that: It comprises a plowshare and an underwater trencher with water jetting capability as described in any one of claims 1 to 9.

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