Underwater backfill plow

Abstract

The present application discloses an underwater backfill plow, comprising a support frame, two symmetrically arranged front sliding shoe mechanisms, a rear sliding shoe mechanism, and a plow body mechanism, wherein the two symmetrically arranged front sliding shoe mechanisms, the rear sliding shoe mechanism, and the plow body mechanism are respectively connected to the support frame. Each front sliding shoe mechanism comprises a front sliding shoe, a first linear drive device, a second linear drive device, a first connecting rod arranged in a vertical direction, and two second connecting rods arranged side by side. The rear sliding shoe mechanism comprises a rear sliding shoe, a third linear drive device, a fourth linear drive device, a third connecting rod arranged in a vertical direction, and two fourth connecting rods arranged side by side. The plow body mechanism comprises two plow bodies arranged side by side, two chute rods arranged side by side and stacked, and a fifth linear drive device. Thus, the plow can be towed by an engineering vessel to stably and reliably backfill soil underwater into a ditch for placing a pipeline.

Description

Technical Field

[0001] The present application relates to the field of underwater pipeline engineering, and in particular to an underwater backfill plow. Background Art

[0002] Nowadays, in the process of transporting fossil fuels such as oil and gas across the sea, it is usually carried out by digging trenches on the seabed and laying pipelines. This requires certain reinforcement and protection of the pipelines to avoid damage.

[0003] At present, digging trenches on the seabed mainly relies on the use of underwater engineering machinery to dig the seabed. For example, when laying pipelines on the soft bottom (sand, mud or gravel) type seabed under the warm current sea area, after the trench is dug and the pipeline is laid, the trench is backfilled and buried using underwater engineering machinery.

[0004] During the above process, the engineering machinery working underwater will inevitably be affected by the ocean currents, which will make it impossible to maintain a stable working state for a long time, thus affecting the backfilling effect. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0006] To this end, one purpose of the present application is to propose an underwater backfill plow that can be towed by an engineering vessel to stably and reliably backfill soil into a ditch for placing pipelines underwater.

[0007] To achieve the above-mentioned objectives, a first embodiment of the present application provides an underwater backfill plow, comprising: a support frame, two symmetrically arranged front sliding shoe mechanisms, a rear sliding shoe mechanism and a plow body mechanism, wherein the two symmetrically arranged front sliding shoe mechanisms, the rear sliding shoe mechanism and the plow body mechanism are respectively connected to the support frame, wherein each of the front sliding shoe mechanisms comprises: a front sliding shoe, a first linear drive device, a second linear drive device, a first connecting rod arranged in a vertical direction and two second connecting rods arranged side by side, wherein the lower end of the first connecting rod is connected to a side axis of the front sliding shoe, one end of the first linear drive device is connected to the other side axis of the front sliding shoe, the upper end of the first connecting rod is connected to the other end axis of the first linear drive device, and the two ends of the second linear drive device are respectively connected to the support frame and the upper end axis of the first connecting rod;

[0008] The two ends of any one of the two second connecting rods are respectively connected to the support frame and the middle axis of the first connecting rod, and the two ends of the other one of the two second connecting rods are respectively connected to the support frame and the upper end axis of the first connecting rod;

[0009] The rear sliding shoe mechanism includes: a rear sliding shoe, a third linear drive device, a fourth linear drive device, a third connecting rod arranged in a vertical direction, and two fourth connecting rods arranged side by side, wherein the lower end of the third connecting rod is connected to the middle axis of the rear sliding shoe, one end of the third linear drive device is connected to the side axis of the rear sliding shoe, the upper end of the third connecting rod is connected to the other end axis of the third linear drive device, and the two ends of the fourth linear drive device are respectively connected to the support frame and the upper end axis of the third connecting rod;

[0010] The two ends of any one of the two fourth connecting rods are respectively connected to the middle part of the third connecting rod and the support frame axis, and the two ends of the other one of the two fourth connecting rods are respectively connected to the support frame and the upper end axis of the third connecting rod;

[0011] The plow body mechanism includes: two plow bodies arranged side by side, two slide rods arranged side by side and stacked, and a fifth linear drive device, wherein the two plow bodies are arranged below the support frame and in the area surrounded by the two front sliding shoe mechanisms and the rear sliding shoe mechanism, the middle part of each plow body is respectively connected to the support frame axis, one end of the slide rod is connected to the rotating shaft connected to the axis of the plow body, the fifth linear drive device is connected to the support frame, and the movable end of the fifth linear drive device is movably connected to the slide groove of the slide rod through a sliding connection.

[0012] The underwater backfill plow according to the embodiment of the present application can smoothly and reliably backfill soil into a ditch for placing pipelines underwater.

[0013] In addition, the underwater backfill plow proposed in the above embodiment of the present application may also have the following additional technical features:

[0014] In one embodiment of the present application, it further includes: a traction mechanism, which includes: two traction rods arranged side by side and two sixth linear drive devices, wherein the ends of the two traction rods are respectively connected to the support frame shaft, and the two ends of the two sixth linear drive devices are respectively connected to the other ends of the two traction rods and the support frame shaft.

[0015] In one embodiment of the present application, it further includes: a counterweight box, which is respectively arranged on the supporting frame, the front sliding shoe and the rear sliding shoe.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic structural diagram of an underwater backfill plow according to one embodiment of the present application;

[0019] Figure 2 This is a diagram showing the effect of using a support frame of an underwater backfill plow according to another embodiment of the present application;

[0020] Figure 3 This is a diagram showing the effect of using a support frame of an underwater backfill plow according to another embodiment of the present application;

[0021] Figure 4 Schematic diagram of the structure of a support frame of an underwater backfill plow according to another embodiment of the present application;

[0022] Figure 5 This is a schematic structural diagram of a front sliding shoe mechanism of an underwater backfill plow according to another embodiment of the present application;

[0023] Figure 6 Schematic diagram of the structure of the rear sliding shoe mechanism of an underwater backfill plow according to another embodiment of the present application;

[0024] Figure 7 Schematic diagram of the structure of a plow body mechanism of an underwater backfill plow according to another embodiment of the present application;

[0025] Figure 8 This is a schematic structural diagram of a traction mechanism of an underwater backfill plow according to another embodiment of the present application.

[0026] As shown in the figure:

[0027] 100-support frame;

[0028] 200-Front sliding shoe mechanism;

[0029] 201-front sliding shoe, 202-first linear drive device, 203-second linear drive device, 204-first connecting rod, 205-second connecting rod;

[0030] 300-rear sliding shoe mechanism;

[0031] 301-rear sliding shoe, 302-third linear drive device, 303-fourth linear drive device, 304-third connecting rod, 305-fourth connecting rod;

[0032] 400-plow mechanism;

[0033] 401-plow body, 402-slide rod, 403-fifth linear drive device;

[0034] 500-traction mechanism;

[0035] 501-traction rod, 502-sixth linear drive device. DETAILED DESCRIPTION

[0036] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] The underwater backfill plow according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0038] The underwater backfill plow provided in this application is capable of operating in a marine environment with a depth of 100 meters or more, a flow rate of 0.5 to 1.5 meters per second, and a wind speed of 6 to 8 meters per second.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, an underwater backfill plow includes: a support frame 100, two symmetrically arranged front sliding shoe mechanisms 200, a rear sliding shoe mechanism 300 and a plow body mechanism 400, wherein the two symmetrically arranged front sliding shoe mechanisms 200, the rear sliding shoe mechanism 300 and the plow body mechanism 400 are respectively connected to the support frame 100, wherein:

[0040] like Figure 4 As shown, the support rack 100 includes: a plurality of mounting racks arranged in a vertical direction, and a plurality of hanging rings for hooking are provided on the support rack 100.

[0041] like Figure 5 As shown, each front sliding shoe mechanism 200 includes: a front sliding shoe 201, a first linear drive device 202, a second linear drive device 203, a first connecting rod 204 arranged in a vertical direction, and two second connecting rods 205 arranged side by side, wherein:

[0042] The lower end of the first connecting rod 204 is connected to the side axis of the front sliding shoe 201, one end of the first linear drive device 202 is connected to the other side axis of the front sliding shoe 201, the upper end of the first connecting rod 204 is connected to the other end axis of the first linear drive device 202, and the two ends of the second linear drive device 203 are respectively connected to the mounting frame and the upper end axis of the first connecting rod 204.

[0043] The two ends of any one of the two second connecting rods 205 are respectively connected to the mounting frame and the middle axis of the first connecting rod 204 , and the two ends of the other one of the two second connecting rods 205 are respectively connected to the mounting frame and the upper end axis of the first connecting rod 204 .

[0044] like Figure 6 As shown, the rear sliding shoe mechanism 300 includes: a rear sliding shoe 301, a third linear drive device 302, a fourth linear drive device 303, a third connecting rod 304 arranged in the vertical direction, and two fourth connecting rods 305 arranged side by side, wherein:

[0045] The lower end of the third connecting rod 304 is connected to the middle axis of the rear sliding shoe 301, one end of the third linear drive device 302 is connected to the side axis of the rear sliding shoe 301, the upper end of the third connecting rod 304 is connected to the other end axis of the third linear drive device 302, and the two ends of the fourth linear drive device 303 are respectively connected to the mounting frame and the upper end axis of the third connecting rod 304.

[0046] The two ends of any one of the two fourth connecting rods 305 are respectively connected to the middle part of the third connecting rod 304 and the support frame 100 axis, and the two ends of the other one of the two fourth connecting rods 305 are respectively connected to the support frame 100 and the upper end of the third connecting rod 304 axis.

[0047] like Figure 7 As shown, the plow mechanism 400 includes: two plow bodies 401 arranged side by side, two slide rods 402 arranged side by side and stacked, and a fifth linear drive device 403, wherein:

[0048] The two plow bodies 401 are arranged below the support frame 100 and in the area surrounded by the two front sliding shoe mechanisms 200 and the rear sliding shoe mechanism 300. The middle part of each plow body 401 is connected to the axis of the support frame 100, one end of the slide rod 402 is connected to the rotating shaft connected to the axis of the plow body 401, the fifth linear drive device 403 is connected to the support frame 100, and the movable end of the fifth linear drive device 403 is movably connected to the slide groove of the slide rod 402 through a sliding connection.

[0049] It should be noted that the underwater backfill plow mainly works underwater, and the underwater environment is harsher than that on land, especially the underwater pressure is greater. Therefore, the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403 used therein may work under a larger water pressure environment. Therefore, the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403 can all use hydraulic rods.

[0050] Not only that, relevant personnel on the engineering ship should focus on checking the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403. For example, when the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403 use hydraulic rods, after multiple launches and long-term use, relevant personnel can check whether water or air has entered the interior. If water or air has entered, the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403 can be made to move quickly at the maximum stroke to forcibly discharge water or gas.

[0051] In addition, the axial alignment of the pistons and piston rods of the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303, and the fifth linear drive device 403 should also be calibrated and adjusted. Furthermore, relevant personnel should also check whether the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303, and the fifth linear drive device 403 are properly connected or functioning with the support frame 100. If not, relevant personnel should promptly adjust or replace them.

[0052] In an embodiment of the present application, when laying a pipeline on a soft bottom (sand, mud or gravel) seabed and backfilling the pipeline is required, the underwater backfill plow is towed by an engineering vessel and placed on the ditch that needs to be backfilled. Then, the two plow body mechanisms 400, the two front sliding shoe mechanisms 200 and the rear sliding shoe mechanism 300 of the underwater backfill plow are adjusted, and finally the underwater backfill plow is towed by the engineering vessel to fill the ditch.

[0053] Specifically, first, under suitable sea conditions, relevant staff connect the underwater backfill plow to the control center and hydraulic system of the engineering vessel through cables and hydraulic pipes, and relevant staff control the underwater backfill plow through the control center and hydraulic system of the engineering vessel to carry out work.

[0054] Specifically, the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403 are connected to the hydraulic system of the engineering ship through relevant connecting conduits, and the hydraulic system of the engineering ship is used to control the extension or contraction of the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403.

[0055] Then the engineering vessel travels to a suitable position above the ditch, and the relevant staff lifts the underwater backfill plow through the crane on the engineering vessel in conjunction with the steel chain and the lifting ring on the support frame 100, and slowly puts it into the sea water until it is placed stably on the ditch.

[0056] It should be noted that in the process of lowering the underwater backfill plow to the ditch by a crane, in order to avoid the impact of ocean currents on the lifting of the underwater backfill plow as much as possible, relevant staff can use an underwater robot to tow the underwater backfill plow when it enters the water.

[0057] After the underwater backfill plow is positioned in the appropriate location in the ditch, personnel use the hydraulic system of the engineering vessel to control and adjust the first, second, third, and fourth linear drives 202, 203, 302, and 303, based on the conditions of the seabed and ditch. This allows the front and rear sliding shoes 201, 301 to adhere to the seabed. After adjusting the first, second, third, and fourth linear drives 202, 303, 302, and 303, personnel then adjust the fifth linear drive 403, ensuring that the plow body 401 opens and closes at the optimal angle relative to the ditch.

[0058] After adjusting the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303 and the fifth linear drive device 403, the relevant staff started the engineering ship and used the steel chain to slowly drive the underwater backfill plow to move slowly along the ditch, and the two plow bodies 401 can backfill the soil into the ditch.

[0059] The underwater backfill plow provided in the present application can be towed by an engineering vessel to stably and reliably backfill soil underwater into a ditch for placing pipelines.

[0060] In order to better explain the present application, in one embodiment of the present application, it further includes: a traction mechanism 500, such as Figure 8 As shown, the traction mechanism 500 includes: two traction rods 501 arranged side by side and two sixth linear drive devices 502, wherein the ends of the two traction rods 501 are respectively connected to the axis of the support frame 100, and the two ends of the two sixth linear drive devices 502 are respectively connected to the other ends of the two traction rods 501 and the axis of the support frame 100.

[0061] In the embodiment of the present application, if the sea conditions are relatively bad, relevant staff can also operate the underwater backfill plow through an underwater robot.

[0062] Specifically, the relevant staff first installs the traction rod 501 on the operating arm of the underwater robot, and connects the first linear drive device 202, the second linear drive device 203, the third linear drive device 302, the fourth linear drive device 303, the fifth linear drive device 403 and the sixth linear drive device 502 to the control center of the underwater robot. Then, the underwater backfill plow and the underwater robot are hoisted into the water by the crane of the engineering ship. Then, the relevant staff operates the robot to carry the underwater backfill to the appropriate position of the ditch. Finally, the underwater robot operates the underwater backfill plow to backfill the ditch. The specific process is shown in the above content and will not be repeated here.

[0063] In order to better explain the present application, in one embodiment of the present application, it further includes: a counterweight box, which is respectively arranged on the supporting frame 100, the front sliding shoe 201 and the rear sliding shoe 301.

[0064] In an embodiment of the present application, in order to further ensure that the underwater backfill plow can work stably and at the same time improve the effect of backfilling, relevant staff can add a counterweight box to the underwater backfill plow.

[0065] Specifically, on the engineering vessel, relevant staff will pre-install the counterweight box in the order of the support frame 100, the rear sliding shoe 301 and the front sliding shoe 201, and then hoist it after the counterweight box is assembled.

[0066] In summary, the underwater backfill plow provided by this application uses two front sliding shoes 201 and a rear sliding shoe 301 for guidance. The first, second, third, fourth, and fifth linear drives 202, 203, 302, 303, and 403 are used to adjust the angles of the two front sliding shoes 201, the rear sliding shoe 301, and the two plow bodies 401. The rear sliding shoe 301 is used to compact the soil within the ditch. Thus, the plow can be towed by an engineering vessel to smoothly and reliably backfill soil into the ditch used to house the pipeline underwater.

[0067] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0069] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, removable connections, or integration. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary. They may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0070] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An underwater backfill plow, characterized in that: include: A support frame (100), two symmetrically arranged front sliding shoe mechanisms (200), a rear sliding shoe mechanism (300) and a plow body mechanism (400), wherein the two symmetrically arranged front sliding shoe mechanisms (200), the rear sliding shoe mechanism (300) and the plow body mechanism (400) are respectively connected to the support frame (100), wherein: Each of the front sliding shoe mechanisms (200) comprises: a front sliding shoe (201), a first linear drive device (202), a second linear drive device (203), a first connecting rod (204) arranged in a vertical direction, and two second connecting rods (205) arranged side by side, wherein: The lower end of the first connecting rod (204) is connected to a side axis of the front sliding shoe (201), one end of the first linear drive device (202) is connected to the other side axis of the front sliding shoe (201), the upper end of the first connecting rod (204) is connected to the other end axis of the first linear drive device (202), and the two ends of the second linear drive device (203) are respectively connected to the support frame (100) and the upper end axis of the first connecting rod (204); The two ends of any one of the two second connecting rods (205) are respectively connected to the support frame (100) and the middle axis of the first connecting rod (204), and the two ends of the other one of the two second connecting rods (205) are respectively connected to the support frame (100) and the upper end axis of the first connecting rod (204); The rear sliding shoe mechanism (300) comprises: a rear sliding shoe (301), a third linear drive device (302), a fourth linear drive device (303), a third connecting rod (304) arranged in a vertical direction, and two fourth connecting rods (305) arranged side by side, wherein: The lower end of the third connecting rod (304) is connected to the middle axis of the rear sliding shoe (301), and the rear sliding shoe (301) is used to compact the fill in the ditch; one end of the third linear drive device (302) is connected to the side axis of the rear sliding shoe (301), the upper end of the third connecting rod (304) is connected to the other end axis of the third linear drive device (302), and the two ends of the fourth linear drive device (303) are respectively connected to the support frame (100) and the upper end axis of the third connecting rod (304); The two ends of any one of the two fourth connecting rods (305) are respectively connected to the middle of the third connecting rod (304) and the axis of the support frame (100), and the two ends of the other one of the two fourth connecting rods (305) are respectively connected to the axis of the support frame (100) and the upper end of the third connecting rod (304); The plow mechanism (400) comprises: two plow bodies (401) arranged side by side, two slide rods (402) stacked side by side, and a fifth linear drive device (403), wherein: The two plow bodies (401) are arranged below the support frame (100) and in the area surrounded by the two front sliding shoe mechanisms (200) and the rear sliding shoe mechanism (300). The middle part of each plow body (401) is connected to the axis of the support frame (100), one end of the slide rod (402) is connected to the rotating shaft connected to the axis of the plow body (401), the fifth linear drive device (403) is connected to the support frame (100), and the movable end of the fifth linear drive device (403) is movably connected to the slide groove of the slide rod (402) through a sliding connection.

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