Drag head structure for trailing suction dredger

Abstract

The present invention discloses a drag head structure for a drag-suction dredger, comprising a connecting cover, one end of the connecting cover is connected to a connecting pipe, the other end of the connecting pipe is movably connected to a movable cover, the inner wall of the movable cover is provided with a rake tooth mechanism, the inner wall of the movable cover is installed with a limiting mechanism, the inner wall of the connecting cover is provided with a pushing mechanism, and the bottom end of the connecting cover is provided with a supporting mechanism; when the movable cover is running and moving, it drives the first fixed rake teeth, the rotating rake teeth and the second fixed rake teeth to move to scrape the silt on the bottom of the water, so as to facilitate the adsorption of the silt, and at the same time, the second fixed rake teeth are used to support the movable cover, stabilize the movement of the movable cover and avoid tilting; since the stones on the bottom of the water are not clear, they are easily stuck between the first fixed rake teeth, and the rotating motor is started, the rotating motor drives the rotating shaft to rotate, and the rotating shaft drives the rotating rake teeth to rotate to push out the stones stuck between the first fixed rake teeth, so that the first fixed rake teeth can conveniently scrape the silt.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging engineering equipment. Background Art

[0002] Port and waterway construction projects require the deployment of various dredging vessels to meet construction needs. Trailing suction hopper dredgers (TSDs) are widely used due to their adaptability. Due to their unique construction characteristics, TSDs excavate along the waterway with a uniform dredging line. However, the complex underwater topography can lead to numerous uncertainties during the excavation process, which can cause problems for the dredging head.

[0003] When the teeth on the rake head are blocked by silt or stones, the rake teeth form a whole plate, resulting in the rake teeth being unable to effectively cut the bottom of the water and the silt on the bottom of the water being unable to be effectively sucked out. Moreover, when the rake head moves to push and dig the bottom silt, a large amount of bottom silt accumulates on one side of the rake teeth of the rake head, causing the suction port to be easily blocked, causing great difficulties to the construction. It is also very easy to cause construction costs to rise and benefits to be lost in the later stage of the project when the trailing suction hopper barge is sweeping shallows. Summary of the Invention

[0004] The invention aims to overcome the defect that the rake teeth are blocked by silt or stones and to provide a rake head structure for a trailing suction dredger.

[0005] The technical solution to achieve the above-mentioned purpose is: a drag head structure for a trailing suction dredger, including a connecting cover, one end of the connecting cover is connected to a connecting pipe, the other end of the connecting pipe is movably connected to a movable cover, the inner wall of the movable cover is provided with a rake tooth mechanism, the inner wall of the movable cover is installed with a limiting mechanism, the inner wall of the connecting cover is provided with a pushing mechanism, and the bottom end of the connecting cover is provided with a supporting mechanism.

[0006] Preferably, the rake tooth mechanism includes a mounting groove, a rotating motor, a rotating shaft, first fixed rake teeth, rotating rake teeth and second fixed rake teeth. The inner wall of the movable cover is provided with a mounting groove, the inner wall of the mounting groove is connected to the rotating motor, the output end of the rotating motor is connected to the rotating shaft, the outer wall of the rotating shaft is connected to a plurality of rotating rake teeth, the bottom end of the movable cover is connected to a plurality of first fixed rake teeth, the first fixed rake teeth and the rotating rake teeth are staggered, and the second fixed rake teeth are connected to the side of the bottom end of the movable cover away from the first fixed rake teeth.

[0007] Preferably, the limiting mechanism includes a square groove, a push rod motor, a push rod, a limiting block and a limiting groove. The inner wall of the movable cover is provided with a square groove. The inner wall of the square groove is connected to the push rod motor. The bottom end of the push rod motor is connected to the push rod. The bottom end of the push rod is connected to the limiting block. The outer wall of the rotating shaft is provided with a limiting groove.

[0008] Preferably, the pushing mechanism includes a hydraulic cylinder, a hydraulic rod, a connecting rod and a push plate. The top of the connecting cover is connected to the hydraulic cylinder, the output end of the hydraulic cylinder is connected to the hydraulic rod, the outer wall of the hydraulic rod is connected to the connecting rod, the outer wall of the connecting rod is movably connected to the push plate, and the outer wall of the push plate is slidably connected to the movable cover.

[0009] Preferably, the supporting mechanism includes a bottom groove, an inner groove, a main board, a slide groove, a spring and an inclined plate. The bottom end of the connecting cover is provided with a bottom groove, the inner wall of the bottom groove is provided with an inner groove, the bottom end of the hydraulic rod is connected to the main board, the outer wall of the main board is provided with two slide grooves, the inner wall of the slide groove is connected to a spring, and one end of the spring is connected to the inclined plate.

[0010] Preferably, the outer wall of the inclined plate is slidably connected to the slide groove, and the outer wall of the hydraulic rod passes through the bottom end of the connecting cover.

[0011] Preferably, the outer wall of the rotating shaft passes through the first fixed rake teeth.

[0012] Preferably, a controller is provided in the connecting cover, the controller is electrically connected to the rotating motor, the controller is electrically connected to the push rod motor, and the hydraulic cylinder is electrically connected to the controller.

[0013] The beneficial effects of the present invention are:

[0014] 1. When the movable cover moves, it will drive the first fixed rake teeth, the rotating rake teeth and the second fixed rake teeth to move to cut the silt on the bottom of the water to facilitate the adsorption of the silt. At the same time, the second fixed rake teeth are used to support the movable cover, stabilize the movement of the movable cover and avoid tilting. Since the stones on the bottom of the water are not clear, they are easy to get stuck between the first fixed rake teeth. Start the rotating motor, the rotating motor drives the rotating shaft to rotate, and the rotating shaft drives the rotating rake teeth to rotate to push out the stones stuck between the first fixed rake teeth, so that the first fixed rake teeth can easily cut the silt.

[0015] 2. Start the push rod motor to make the push rod insert the limit block into the limit groove, further fix the rotating shaft, ensure the stability of the rotating rake teeth, and enable the rotating rake teeth to maintain stability in cutting the silt.

[0016] 3. Start the hydraulic cylinder, which drives the hydraulic rod to move, which drives the connecting rod to move, and the connecting rod drives the push plate to move, so that the silt in the movable cover is pushed out to facilitate the rotation of the rake teeth. At the same time, the hydraulic rod drives the main board to move, and the main board supports downward so that the connected cover and the movable cover can be disengaged from the bottom of the water. When the main board moves out of the bottom groove, it will squeeze the inclined plate and slide it into the chute. After the main board moves out, the spring will push the inclined plate out of the chute to increase the area of ​​the main board, thereby stabilizing the support of the connected cover and the movable cover, so that the rake tooth mechanism can be separated from the bottom of the water, facilitating the rotation of the rake teeth, and pushing out the stones stuck between the first fixed rake teeth, thereby improving the effect of clearing stuck stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a bottom view structural diagram of the present invention;

[0019] Figure 3 It is a cross-sectional left-side structural schematic diagram of the present invention;

[0020] Figure 4 It is a cross-sectional right-side structural schematic diagram of the present invention;

[0021] Figure 5 It is a schematic diagram of the explosion structure of the present invention;

[0022] Figure 6 yes Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 7 yes Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 8 yes Figure 5 Schematic diagram of the enlarged structure at point C in the middle.

[0025] 1. Connecting cover; 2. Movable cover; 3. Connecting pipe; 4. Rake tooth mechanism; 401. Mounting slot; 402. Rotating motor; 403. Rotating shaft; 404. First fixed rake tooth; 405. Rotating rake tooth; 406. Second fixed rake tooth; 5. Limiting mechanism; 501. Square slot; 502. Push rod motor; 503. Push rod; 504. Limiting block; 505. Limiting slot; 6. Pushing and removing mechanism; 601. Hydraulic cylinder; 602. Hydraulic rod; 603. Connecting rod; 604. Push plate; 7. Support mechanism; 701. Bottom slot; 702. Inner slot; 703. Main plate; 704. Slide slot; 705. Spring; 706. Inclined plate. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" 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 invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Reference Attachment Figure 1-8 A drag head structure for a trailing suction dredger includes a connecting cover 1, one end of the connecting cover 1 is connected to a connecting pipe 3, the other end of the connecting pipe 3 is movably connected to a movable cover 2, the inner wall of the movable cover 2 is provided with a rake tooth mechanism 4, the inner wall of the movable cover 2 is installed with a limiting mechanism 5, the inner wall of the connecting cover 1 is provided with a pushing mechanism 6, the bottom end of the connecting cover 1 is provided with a supporting mechanism 7, a controller is provided in the connecting cover 1, the controller is electrically connected to the rotating motor 402, the controller is electrically connected to the push rod motor 502, and the hydraulic cylinder 601 is electrically connected to the controller.

[0029] Reference Attachment Figure 1-6 The rake tooth mechanism 4 includes a mounting groove 401, a rotating motor 402, a rotating shaft 403, a first fixed rake tooth 404, a rotating rake tooth 405 and a second fixed rake tooth 406. The inner wall of the movable cover 2 is provided with a mounting groove 401, the inner wall of the mounting groove 401 is connected to the rotating motor 402, the output end of the rotating motor 402 is connected to the rotating shaft 403, the outer wall of the rotating shaft 403 is connected to a plurality of rotating rake teeth 405, the bottom end of the movable cover 2 is connected to a plurality of first fixed rake teeth 404, the first fixed rake teeth 404 and the rotating rake teeth 405 are staggered, the second fixed rake teeth 406 are connected to the side of the bottom end of the movable cover 2 away from the first fixed rake teeth 404, and the outer wall of the rotating shaft 403 passes through the first fixed rake teeth 404.

[0030] When the movable cover 2 is running and moving, it will drive the first fixed rake teeth 404, the rotating rake teeth 405 and the second fixed rake teeth 406 to move to cut the silt on the bottom of the water to facilitate the adsorption of the silt. At the same time, the second fixed rake teeth 406 are used to support the movable cover 2, stabilize the movement of the movable cover 2, and avoid tilting. Since the stones on the bottom of the water are not clear, they are easily stuck between the first fixed rake teeth 404. The rotating motor 402 is started, and the rotating motor 402 drives the rotating shaft 403 to rotate. The rotating shaft 403 drives the rotating rake teeth 405 to rotate to push out the stones stuck between the first fixed rake teeth 404, so that the first fixed rake teeth 404 can easily cut the silt.

[0031] Reference Attachment Figure 1-7 The limiting mechanism 5 includes a square groove 501, a push rod motor 502, a push rod 503, a limit block 504 and a limit groove 505. The inner wall of the movable cover 2 is provided with a square groove 501, the inner wall of the square groove 501 is connected to the push rod motor 502, the bottom end of the push rod motor 502 is connected to the push rod 503, the bottom end of the push rod 503 is connected to the limit block 504, and the outer wall of the rotating shaft 403 is provided with a limit groove 505.

[0032] Start the push rod motor 502 to make the push rod 503 insert the limit block 504 into the limit groove 505, further fix the rotating shaft 403, ensure the stability of the rotating rake teeth 405, and enable the rotating rake teeth 405 to maintain stability in cutting through the mud. If you need to take it out, just reverse the above operation.

[0033] Reference Attachment Figure 1-4 The pushing and removing mechanism 6 includes a hydraulic cylinder 601, a hydraulic rod 602, a connecting rod 603 and a push plate 604. The top of the connecting cover 1 is connected to the hydraulic cylinder 601, the output end of the hydraulic cylinder 601 is connected to the hydraulic rod 602, the outer wall of the hydraulic rod 602 is connected to the connecting rod 603, the outer wall of the connecting rod 603 is movably connected to the push plate 604, and the outer wall of the push plate 604 is slidably connected to the movable cover 2.

[0034] Reference Attachment Figure 1-8 The supporting mechanism 7 includes a bottom groove 701, an inner groove 702, a main board 703, a slide groove 704, a spring 705 and an inclined plate 706. The bottom end of the connecting cover 1 is provided with a bottom groove 701, and the inner wall of the bottom groove 701 is provided with an inner groove 702. The bottom end of the hydraulic rod 602 is connected to the main board 703, and the outer wall of the main board 703 is provided with two slide grooves 704. The inner wall of the slide groove 704 is connected with a spring 705, and one end of the spring 705 is connected to the inclined plate 706. The inclined surface of the inclined plate 706 is a double-sided inclined surface. The outer wall of the inclined plate 706 is slidably connected to the slide groove 704, and the outer wall of the hydraulic rod 602 passes through the bottom end of the connecting cover 1.

[0035] When the hydraulic cylinder 601 is started, the hydraulic cylinder 601 drives the hydraulic rod 602 to move, and the hydraulic rod 602 drives the connecting rod 603 to move, and the connecting rod 603 drives the pushing plate 604 to move, so that the silt in the movable cover 2 is pushed out to facilitate the rotation of the rotating rake teeth 405. At the same time, the hydraulic rod 602 drives the main plate 703 to move, and the main plate 703 supports downward so that the connected cover 1 and the movable cover 2 can be separated from the water bottom. When the main plate 703 moves out of the bottom groove 701, it will squeeze the inclined plate 706, so that the inclined plate 706 slides into the chute 704. After the main plate 703 moves out, the spring 705 will push the inclined plate 706 out of the chute 704 to increase the area of ​​the main plate 703, thereby stabilizing the support of the connected cover 1 and the movable cover 2, so that the rake tooth mechanism 4 can be separated from the water bottom, facilitating the rotation of the rotating rake teeth 405, and pushing out the stones stuck between the first fixed rake teeth 404, thereby improving the effect of clearing the stuck stones.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drag head structure for a trailing suction dredger, comprising a connecting cover (1), one end of the connecting cover (1) being connected to a connecting pipe (3), and the other end of the connecting pipe (3) being movably connected to a movable cover (2), characterized in that: The inner wall of the movable cover (2) is provided with a rake tooth mechanism (4), the inner wall of the movable cover (2) is installed with a limit mechanism (5), the inner wall of the connected cover (1) is provided with a push-off mechanism (6), and the bottom end of the connected cover (1) is provided with a support mechanism (7); The rake tooth mechanism (4) comprises a mounting groove (401), a rotating motor (402), a rotating shaft (403), first fixed rake teeth (404), rotating rake teeth (405) and second fixed rake teeth (406); the inner wall of the movable cover (2) is provided with a mounting groove (401); the inner wall of the mounting groove (401) is connected to the rotating motor (402); the output end of the rotating motor (402) is connected to the rotating shaft (403); the outer wall of the rotating shaft (403) is connected to a plurality of rotating rake teeth (405); the bottom end of the movable cover (2) is connected to a plurality of first fixed rake teeth (404); the first fixed rake teeth (404) and the rotating rake teeth (405) are staggered; and the side of the bottom end of the movable cover (2) away from the first fixed rake teeth (404) is connected to the second fixed rake teeth (406).

2. The drag head structure for a trailing suction hopper dredger according to claim 1, characterized in that: The limiting mechanism (5) comprises a square groove (501), a push rod motor (502), a push rod (503), a limiting block (504) and a limiting groove (505); the inner wall of the movable cover (2) is provided with a square groove (501); the inner wall of the square groove (501) is connected to the push rod motor (502); the bottom end of the push rod motor (502) is connected to the push rod (503); the bottom end of the push rod (503) is connected to the limiting block (504); and the outer wall of the rotating shaft (403) is provided with a limiting groove (505).

3. The drag head structure for a trailing suction hopper dredger according to claim 2, characterized in that: The pushing mechanism (6) comprises a hydraulic cylinder (601), a hydraulic rod (602), a connecting rod (603) and a push plate (604); the top end of the connecting cover (1) is connected to the hydraulic cylinder (601); the output end of the hydraulic cylinder (601) is connected to the hydraulic rod (602); the outer wall of the hydraulic rod (602) is connected to the connecting rod (603); the outer wall of the connecting rod (603) is movably connected to the push plate (604); and the outer wall of the push plate (604) is slidably connected to the movable cover (2).

4. The drag head structure for a trailing suction hopper dredger according to claim 3, characterized in that: The support mechanism (7) comprises a bottom groove (701), an inner groove (702), a main plate (703), a slide groove (704), a spring (705) and an inclined plate (706); the bottom end of the connecting cover (1) is provided with a bottom groove (701); the inner wall of the bottom groove (701) is provided with an inner groove (702); the bottom end of the hydraulic rod (602) is connected to the main plate (703); the outer wall of the main plate (703) is provided with two slide grooves (704); the inner wall of the slide groove (704) is connected to a spring (705); and one end of the spring (705) is connected to the inclined plate (706).

5. The drag head structure for a trailing suction hopper dredger according to claim 4, characterized in that: The outer wall of the inclined plate (706) is slidably connected to the slide groove (704), and the outer wall of the hydraulic rod (602) passes through the bottom end of the connecting cover (1).

6. The drag head structure for a trailing suction hopper dredger according to claim 1, characterized in that: The outer wall of the rotating shaft (403) passes through the first fixed rake teeth (404).

7. The drag head structure for a trailing suction hopper dredger according to claim 4, characterized in that: A controller is provided in the connecting cover (1), the controller is electrically connected to the rotating motor (402), the controller is electrically connected to the push rod motor (502), and the hydraulic cylinder (601) is electrically connected to the controller.

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