Submarine trencher body structure capable of adjusting natural backfilling speed

Abstract

The invention discloses a submarine trencher body structure capable of adjusting the natural backfilling speed, and belongs to the technical field of ocean engineering. Comprising a frame structure; the angle adjusting mechanism I can adjust the angle of the spraying arm or the spraying pipe; and the channel secondary shaping mechanism is used for shaping the channel. The device is convenient to mount and adjust, and instruments and equipment can be flexibly increased or decreased according to operation requirements. According to the invention, the angle of the jet flow spraying arm can be adjusted, so that the ditcher can dig channels with different shapes, and the speed of natural backfilling is changed. The included angle between the injection pipe in the mud suction backfilling mechanism and the ground can be adjusted, and the injection speed and the drop point of a mud flow mixture pair can be accurately controlled. The channel shape can be shaped, a proper channel slope ratio can be formed, the speed of the natural backfilling process is optimized, the inclination angle of the side plate is flexibly adjusted through the angle adjusting mechanism so as to adapt to different engineering requirements, and the construction efficiency is improved. And the secondary spraying structure at the lower part can be used for judging the channel quality according to information provided by equipment such as a depth gauge and the like and carrying out secondary ditching.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering, and in particular relates to a body structure of a seabed trencher capable of adjusting a natural backfilling speed. Background Art

[0002] With the increasingly busy maritime activities, submarine cable damage and submarine pipeline damage accidents caused by factors such as ship anchoring, trawling operations and ocean current scouring occur frequently. At present, the use of submarine trenchers for trenching and burying is the most economical and effective method of submarine cable protection. However, the existing trenchers have significant deficiencies in the stability of the machine body and the backfill protection of the pipeline, which directly affects the safety of the buried submarine pipeline and the working efficiency of the trencher. The natural backfill speed after trenching is too fast or too slow, which will lead to incomplete pipeline backfill. The natural backfill speed is closely related to the slope ratio of the pipeline trenching. If the submarine trencher can dig a trench with a suitable slope ratio according to different working environments and working requirements, it can greatly improve the completion quality of the submarine pipeline landfill task and enhance the safety of the submarine pipeline. Summary of the invention

[0003] In order to solve the technical problems in the prior art such as complex trencher frame structure design, difficulty in adjustment, large force on the traveling mechanism, easy damage, inability to dig trenches with suitable slope ratios in different sea areas, further inability to meet natural backfill design requirements, poor adaptability, etc., the present invention proposes a submarine trencher body structure with adjustable natural backfill speed, so as to provide a submarine trencher body structure with a compact structural design, stable and firm, easy to install and adjust, low risk of damage, and capable of using an adjustment mechanism to adjust the slope ratio of the excavated trench and further adjust the natural backfill speed according to different working environments and operating requirements.

[0004] The technical solution adopted by the present invention is:

[0005] A submarine trenching machine body structure capable of adjusting natural backfilling speed, comprising:

[0006] Frame structure, used to install spraying arm and mud suction and backfilling mechanism;

[0007] Angle adjustment mechanism 1, installed on the frame structure, connected to the spray arm or the spray pipe, and capable of adjusting the angle of the spray arm or the spray pipe;

[0008] A traveling mechanism, installed below the frame structure;

[0009] The channel secondary shaping mechanism is installed at the rear end of the frame structure and is used to shape the channel.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The submarine trenching machine has a compact body structure design, is easy to install and adjust, and can flexibly add or remove instruments and equipment according to operational requirements.

[0012] The angle adjustment mechanism on the spray arm can adjust the angle of the jet spray arm, so that the trencher can dig trenches of different shapes and change the speed of natural backfill. The angle adjustment mechanism on the injection pipe can adjust the angle between the injection pipe and the ground in the mud suction backfill mechanism, accurately control the injection speed and landing point of the mud flow mixture, improve the efficiency of natural backfill, and ensure the efficiency of backfilling operations and engineering quality.

[0013] The secondary shaping mechanism of the channel of the present invention uses two inclined side plates for spraying at the front and the rear to contact the channel to shape the channel and form a suitable channel slope ratio, thereby optimizing the speed of the natural backfilling process. The inclination angle of the side plates can be flexibly adjusted through the angle adjustment mechanism to adapt to different engineering requirements. The secondary spraying structure at the bottom can judge the channel quality through information provided by equipment such as a depth meter and perform secondary trenching.

[0014] The travel mechanism composed of four small sliding shoes of the present invention reduces the friction resistance suffered by the trencher by reducing the contact area with the seabed, thereby improving the working efficiency and adaptability; the support members inside the sliding shoes improve the safety and stability of the sliding shoes and the trencher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a partial enlarged view of the framework structure of the present invention;

[0017] Figure 3 It is a schematic diagram of the angle adjustment mechanism of the present invention;

[0018] Figure 4 It is a schematic diagram of the channel secondary shaping mechanism of the present invention;

[0019] Figure 5 It is a schematic diagram of the travel mechanism of the present invention;

[0020] Figure 6 is a cross-sectional view of the sliding shoe of the present invention;

[0021] Among them: 1. Frame structure; 2. Angle adjustment mechanism 1; 3. Channel secondary shaping mechanism; 4. Traveling mechanism; 5. Symmetrical triangular bracket; 6. Spray arm mounting part; 7. Mud suction backfilling mechanism mounting part; 101. Hollow circular tube; 102. 90° elbow; 103. Hole; 201. Hydraulic rod; 202. Connector; 203. Bearing; 301. Curved side plate; 302. Nozzle; 303. Connecting frame; 304. Secondary spraying equipment; 305. Detection equipment mounting frame; 306. Angle adjustment mechanism 2; 307. Multi-speed telescopic adjustment mechanism; 401. Slipper; 4011. Top support rod; 4012. Support member; 4013. Slipper bottom plate. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 As shown, a submarine trenching machine body structure capable of adjusting natural backfilling speed includes:

[0024] Frame structure 1, used for installing the spraying arm and the mud suction and backfilling mechanism;

[0025] An angle adjustment mechanism 2 is installed on the frame structure 1, connected to the spray arm or the spray pipe, and can adjust the angle of the spray arm or the spray pipe; it mainly works through the hydraulic rod 201 and can adapt to different operation requirements;

[0026] A traveling mechanism 4 is installed below the frame structure 1;

[0027] The channel secondary shaping mechanism 3 is installed at the rear end of the frame structure 1 and is used for shaping the channel.

[0028] like Figure 2 As shown, the frame structure 1 is formed by vertically staggered welding of multiple hollow circular tubes 101 of different lengths, wall thicknesses and thicknesses, which can ensure the stability of the structure and the ability to adapt to different underwater pressures. The horizontally arranged hollow circular tubes 101 and the vertically arranged hollow circular tubes 101 are connected at the edge of the frame through a 90° elbow 102, which can enhance the overall rigidity while reducing the resistance it is subjected to; multiple holes 103 for installing instruments and equipment are reserved on the frame structure 1; a symmetrical triangular bracket 5 is welded in the middle of the frame structure 1, and the top of the symmetrical triangular bracket 5 can be equipped with a cable mounting member; the head and tail of the frame structure 1 are respectively provided with a spray arm mounting member 6 and a mud suction backfilling mechanism mounting member 7, and the spray arm and the mud suction backfilling mechanism can be installed by screws.

[0029] The plurality of hollow circular tubes 101 are connected to each other, and one of the hollow circular tubes 101 is connected to the air pump to serve as a passage for air flow and water flow. Flange connection gasket sealing measures are adopted to prevent air leakage.

[0030] like Figure 3 As shown, the angle adjustment mechanism 2 includes a hydraulic rod 201 and two connecting parts 202; one end of the hydraulic rod 201 is hinged to the spray arm or the spray pipe through the connecting part 202, and the other end of the hydraulic rod 201 is hinged to the frame structure 1 through the connecting part 202. The hydraulic rod 201 can be connected to the angle sensor and the controller to achieve more precise control.

[0031] A bearing 203 is provided on the connecting member 202, and the bearing 203 is used to realize an articulation with the hydraulic rod 201, thereby reducing friction and improving adjustment accuracy.

[0032] The angle adjustment mechanism 2 works through the hydraulic rod 201 to achieve precise adjustment of the angle of the jet spray arm and the angle between the spray pipe and the ground.

[0033] The hydraulic rod 201 in the angle adjustment mechanism 2 has a multi-stage telescopic design to adapt to different operating requirements and adjust the automatic backfilling speed.

[0034] like Figure 4 As shown, the channel secondary shaping mechanism 3 includes a nozzle 302, a connecting frame 303, a secondary spraying device 304, a detection device mounting frame 305, an angle adjustment mechanism 2 306, two curved side plates 301 and a multi-stage telescopic adjustment mechanism 307; the two curved side plates 301 are arranged symmetrically, and the front part of the curved side plate 301 is an arc plate, and the rear part is a straight plate; and a plurality of nozzles 302 are installed on the outer surface of the curved plate, and a hose is provided inside the curved side plate 301 and the connecting frame 303 to connect the nozzle 302 with the air pump on the frame structure 1, and the two curved side plates 301 are arranged symmetrically. The side panels 301 are connected to the connecting frame 303 via an angle adjustment mechanism 306, and the lower ends of the two curved side panels 301 are hinged to the connecting frame 303. The connecting frame 303 is connected to the frame structure 1 via a multi-speed telescopic adjustment mechanism 307. The detection equipment mounting frame 305 is connected to the connecting frame 303 by welding. The detection equipment mounting frame 305 is used to install detection equipment such as a depth gauge to check the ditching condition. The secondary spraying equipment 304 is installed below the connecting frame 303 and is connected to the hose on the connecting frame 303 and the air pump on the frame structure 1.

[0035] The channel secondary shaping mechanism 3 changes the channel slope ratio by controlling the spraying force of the nozzle 302 on the curved side plate 301, and further shapes the channel shape by contacting the channel with the rear of the curved side plate 301; a hose is provided inside the curved side plate 301 and the connecting frame 303 to connect the nozzle 302 with the air pump on the frame structure 1. The front part of the curved side plate 301 is streamlined to reduce the resistance of the channel secondary shaping mechanism during the movement of the trencher.

[0036] The secondary flushing equipment 304 can check the trench condition through the detection equipment such as the depth gauge on the detection equipment mounting frame 305, and perform secondary trenching according to the trenching quality to ensure that the trench depth meets the requirements, the submarine cable can be successfully buried and the submarine cable exposure caused by the trench being too shallow can be avoided.

[0037] The two curved side plates 301 are connected to the connecting frame 303 through the second angle adjustment mechanism 306, and the inclination angle of the curved side plates 301 can be flexibly adjusted through the second angle adjustment mechanism 306 to adapt to different engineering requirements and environmental conditions. The connecting frame 303 is connected to the trenching machine frame structure 1 through a multi-stage telescopic adjustment mechanism 307, and the overall position of the trench secondary shaping mechanism 3 can be adjusted through the multi-stage telescopic adjustment mechanism 307 so that it can adapt to trenches of different depths.

[0038] The angle adjustment mechanism 2 306 has the same structure as the angle adjustment mechanism 1 2 and will not be described in detail here.

[0039] like Figure 5 , Figure 6 As shown, the traveling mechanism 4 adopts four small sliding shoes 401, which can reduce the contact area between the traveling mechanism 4 and the seabed and reduce the friction resistance. The width of the sliding shoe 401 is determined according to the weight of the trencher and the seabed soil to ensure good ground adaptability and stability. Each sliding shoe 401 is equipped with a support member 4012 inside, which is connected to the sliding shoe bottom plate 4013 and the top support rod 4011 of the sliding shoe 401 by welding to enhance the structural strength of the sliding shoe 401 and improve the safety and stability of the seabed trencher operation.

[0040] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A submarine trenching machine body structure capable of adjusting natural backfilling speed, characterized in that: include A frame structure (1) for installing a spraying arm and a mud suction and backfilling mechanism; An angle adjustment mechanism (2) is installed on the frame structure (1), connected to the spray arm or the spray pipe, and capable of adjusting the angle of the spray arm or the spray pipe; A traveling mechanism (4) is installed below the frame structure (1); The channel secondary shaping mechanism (3) is installed at the rear end of the frame structure (1) and is used to shape the channel.

2. The submarine trenching machine body structure with adjustable natural backfill speed according to claim 1 is characterized in that: The frame structure (1) is welded from a plurality of hollow circular tubes (101), and a plurality of holes (103) for installing instruments and equipment are reserved on the frame structure (1); a symmetrical triangular bracket (5) is welded in the middle of the frame structure (1), and a cable installation part can be assembled on the top of the symmetrical triangular bracket (5); a spray arm installation part (6) and a mud suction backfilling mechanism installation part (7) are respectively arranged at the head and tail of the frame structure (1), and the spray arm and the mud suction backfilling mechanism are installed by screws.

3. The submarine trenching machine body structure capable of adjusting the natural backfilling speed according to claim 2 is characterized in that: The plurality of hollow circular tubes (101) are connected to each other, and one of the hollow circular tubes (101) is connected to an air pump.

4. The submarine trenching machine body structure capable of adjusting the natural backfilling speed according to claim 3 is characterized in that: The horizontally arranged hollow circular tube (101) is connected to the vertically arranged hollow circular tube (101) at the edge of the frame via a 90° elbow (102).

5. The submarine trenching machine body structure capable of adjusting natural backfilling speed according to claim 1 is characterized in that: The angle adjustment mechanism (2) comprises a hydraulic rod (201) and two connecting pieces (202); one end of the hydraulic rod (201) is hinged to the spray arm or the spray pipe through the connecting piece (202), and the other end of the hydraulic rod (201) is hinged to the frame structure (1) through the connecting piece (202); the hydraulic rod (201) is connected to an angle sensor and a controller.

6. The submarine trenching machine body structure capable of adjusting the natural backfilling speed according to claim 5 is characterized in that: The connecting member (202) is provided with a bearing (203), and is hingedly connected to the hydraulic rod (201) via the bearing (203).

7. The submarine trenching machine body structure capable of adjusting natural backfilling speed according to claim 1 is characterized in that: The channel secondary shaping mechanism (3) comprises a nozzle (302), a connecting frame (303), a second angle adjustment mechanism (306), two curved side plates (301) and a multi-stage telescopic adjustment mechanism (307); the two curved side plates (301) are arranged symmetrically, and the front part of the curved side plate (301) is an arc-shaped plate, and the rear part is a straight plate; a plurality of nozzles (302) are arranged on the outer surface of the arc-shaped plate, and a hose is arranged inside the curved side plate (301) and the connecting frame (303) to connect the nozzle (302) and the air pump on the frame structure (1); the two curved side plates (301) and the connecting frame (303) are connected via the second angle adjustment mechanism (306), and the lower ends of the two curved side plates (301) are hinged to the connecting frame (303), and the connecting frame (303) and the frame structure (1) are connected via the multi-stage telescopic adjustment mechanism (307).

8. The submarine trenching machine body structure capable of adjusting natural backfilling speed according to claim 7 is characterized in that: The channel secondary shaping mechanism (3) further comprises a detection equipment mounting frame (305); the detection equipment mounting frame (305) is connected to the connecting frame (303), and the detection equipment mounting frame (305) is used for mounting the detection equipment.

9. The submarine trenching machine body structure capable of adjusting natural backfilling speed according to claim 8 is characterized in that: The channel secondary shaping mechanism (3) further comprises a secondary spraying device (304); the secondary spraying device (304) is installed below the connecting frame (303) and is connected to a hose on the connecting frame (303) and an air pump on the frame structure (1).

10. The submarine trenching machine body structure capable of adjusting natural backfilling speed according to claim 1 is characterized in that: The travel mechanism (4) uses four sliding shoes (401), each of which is internally provided with a support member (4012) which is connected to a sliding shoe bottom plate (4013) and a top support rod (4011) of the sliding shoe (401) by welding.

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