A debris prevention device for the dredging head of a trailing suction hopper ship

Abstract

The utility model discloses a debris prevention device for a dredging rake head of a dredging vessel, and relates to the technical field of dredging engineering, comprising a fixed cover and a movable cover, wherein the front part of the fixed cover is provided with the movable cover, and the utility model arranges a grating plate, an upper baffle and a lower baffle, and the upper baffle and the lower baffle are staggered in space, so that when the dredging rake head of the dredging vessel sucks the bottom silt, the debris in the sludge can be intercepted for the first time, and then the debris in the sludge can be intercepted for the second time by the grating plate located at the rear of the upper baffle and the lower baffle, and the utility model adopts a double interception design, which can make the debris prevention effect of the device better, and the utility model can facilitate personnel to regularly clean the grating plate by arranging a detachable grating plate, so that the cleaning is more convenient, and it is also convenient to replace the grating plate when it is damaged, and by arranging a detachable rake tooth, it is convenient to replace the damaged rake tooth, thereby extending the service life of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of dredging engineering, in particular to a debris prevention device for a dredging rake head of a trailing suction dredger. Background Art

[0002] Trailing suction dredger is a kind of dredging construction ship, which is mainly responsible for clearing silt from waterways and rivers. It can effectively improve the navigation capacity of rivers and ensure navigation safety. Trailing suction dredger mainly removes silt from the seabed or river bottom through the rake head and rake teeth, and then transports it to land or ship through pipelines. The rake head and rake teeth of the trailing suction dredger can be replaced and adjusted according to actual needs.

[0003] At present, a trailing suction dredger will encounter various working conditions during construction. Generally, a grille is installed at the drag head to prevent debris such as stones and wood piles from entering the mud pipeline and mud pump. Currently, most grilles are installed in the flow channel of the drag head body. They are rigid truss structures welded from steel plates or round steels, commonly known as hard grilles. The grilles are welded in the drag cavity. During use, the grid cavity is easily blocked. The existing structure is not convenient for cleaning the grille, and it is not easy to replace the grille once it is damaged. Utility Model Content

[0004] The utility model aims to provide a debris prevention device for a dredging drag head of a trailing suction hopper ship to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A debris prevention device for a dredging dredge head of a dredging vessel comprises a fixed cover and a movable cover, wherein the front portion of the fixed cover is provided with a movable cover, a hinge pin is provided between the movable cover and the fixed cover, and the movable cover and the fixed cover are hinged, rake teeth are installed in the movable cover, a socket is provided on the fixed cover, a grille plate is inserted into the socket, a cover plate is installed on the grille plate, two first screws are provided on the cover plate, the first screws are threadedly connected with corresponding thread grooves provided on the fixed cover, an upper baffle rod is installed on the top of the inner wall of the fixed cover, a lower baffle rod is installed on the bottom surface of the inner wall of the movable cover, a pipe body is installed at the rear portion of the fixed cover, and a flange is installed on the port of the pipe body.

[0007] As a further solution of the utility model: the grille plate is arranged obliquely in the fixed cover, and the bottom surface of the grille plate is consistent with the bottom surface of the fixed cover in shape.

[0008] As a further solution of the utility model: the upper baffle bars and the lower baffle bars are arranged in rows with equal intervals, and the upper baffle bars and the lower baffle bars are staggered in space.

[0009] As a further solution of the utility model: the distance between two adjacent upper baffles is equal to the distance between two adjacent lower baffles and both are 5-8 cm.

[0010] As a further solution of the utility model: a second screw is installed on the rake teeth, and the rake teeth are fixedly connected to the movable cover through the second screw.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides a grating plate, an upper baffle and a lower baffle, and the upper baffle and the lower baffle are staggered in space. When the dredging rake head of the dredger sucks the bottom silt, the debris in the sludge can be initially intercepted, and then the grating plate located at the rear of the upper baffle and the lower baffle can be used to intercept the debris in the sludge for a second time. The utility model adopts a double interception design, which can make the device more effective in preventing debris.

[0013] 2. The utility model can facilitate personnel to regularly clean the grille plate by providing a detachable grille plate, making cleaning more convenient and also convenient to replace the grille plate when it is damaged. By providing detachable rake teeth, damaged rake teeth can be easily replaced, thereby extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the overall structure of a debris prevention device for a dredging drag head of a trailing suction hopper ship.

[0015] Figure 2 The present invention is a side section view of a debris prevention device of a dredging drag head of a trailing suction hopper ship.

[0016] Figure 3 A debris prevention device for the dredging head of a trailing suction hopper vessel Figure 2 Schematic diagram of the structure in the AA direction.

[0017] 1. Fixed cover; 2. Movable cover; 3. Hinge pin; 4. Rake teeth; 5. Tube body; 6. Socket; 7. Grille plate; 8. Threaded groove; 9. First screw; 10. Lower stop rod; 11. Upper stop rod; 12. Flange; 13. Cover plate; 14. Second screw. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 In the embodiment of the utility model, a debris prevention device for a dredging dredge head of a dredger suction dredge comprises a fixed cover 1 and a movable cover 2, the front part of the fixed cover 1 is provided with the movable cover 2, a hinge pin 3 is provided between the movable cover 2 and the fixed cover 1, and the movable cover 2 is hinged to the fixed cover 1, the movable cover 2 cooperates with the fixed cover 1 to adapt to different underwater terrains, so that the dredge head has a stronger ability to adapt to terrains, a rake tooth 4 is installed in the movable cover 2, a socket 6 is provided on the fixed cover 1, a grille plate 7 is inserted in the socket 6, a cover plate 13 is installed on the grille plate 7, two first screws 9 are installed on the cover plate 13, the first screws 9 are threadedly connected with the corresponding thread grooves 8 provided on the fixed cover 1, the orifice width of the grille plate 7 is smaller than the spacing between two adjacent upper baffles 11 or two adjacent lower baffles 10, a pipe body 5 is installed at the rear part of the fixed cover 1, and a flange 12 is installed at the end of the pipe body 5;

[0020] The grille plate 7 is tiltedly arranged in the fixed cover 1 , and the bottom surface of the grille plate 7 matches the shape of the bottom surface of the fixed cover 1 . This design can make the fixed cover 1 and the movable cover 2 more compatible.

[0021] See also Figure 2-3 An upper baffle 11 is installed on the top of the inner wall of the fixed cover 1, and a lower baffle 10 is installed on the bottom of the inner wall of the movable cover 2. The upper baffle 11 and the lower baffle 10 are arranged in rows with equal intervals, and the upper baffle 11 and the lower baffle 10 are staggered in space. This design allows the upper baffle 11 and the lower baffle 10 to cooperate to form a grille-like shape, which is convenient for intercepting larger debris in the sludge.

[0022] The distance between two adjacent upper blocking bars 11 is equal to the distance between two adjacent lower blocking bars 10 and is 5-8 cm. This distance can intercept relatively large debris in the sludge.

[0023] See also Figure 1 The rake teeth 4 are provided with second screws 14, and the rake teeth 4 are fixedly connected to the movable cover 2 by the second screws 14, so that the rake teeth 4 are detachable, and the damaged rake teeth 4 can be conveniently replaced, thereby extending the service life of the device.

[0024] The working principle of the utility model is:

[0025] When in use, the pipe body 5 is connected to the suction pipe on the drag suction boat through the flange 12. When the drag suction boat dredging rake head is placed on the bottom of the water and the suction pump is turned on, the sludge scraped up by the rake teeth 4 enters the movable cover 2, and the debris in the sludge will first be initially intercepted by the interception structure composed of the upper blocking rod 11 and the lower blocking rod 10, and then the debris in the sludge will be intercepted for a second time by the grid plate 7. When not in use, the first screw 9 can be unscrewed to pull the grid plate 7 out of the fixed cover 1 for cleaning or replacement.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A debris prevention device for a dredging dredge head of a trailing suction hopper vessel, comprising a fixed cover (1) and a movable cover (2), characterized in that: A movable cover (2) is arranged at the front of the fixed cover (1), a hinge pin (3) is arranged between the movable cover (2) and the fixed cover (1), and the movable cover (2) and the fixed cover (1) are hinged, a rake tooth (4) is installed in the movable cover (2), a socket (6) is provided on the fixed cover (1), a grille plate (7) is inserted in the socket (6), a cover plate (13) is installed on the grille plate (7), two first screws (9) are arranged on the cover plate (13), and the first screws (9) are threadedly connected with the corresponding thread grooves (8) arranged on the fixed cover (1), an upper stopper (11) is installed on the top of the inner wall of the fixed cover (1), a lower stopper (10) is installed on the bottom surface of the inner wall of the movable cover (2), a pipe body (5) is installed at the rear of the fixed cover (1), and a flange (12) is installed at the end of the pipe body (5).

2. The debris prevention device for the dredging head of a trailing suction hopper vessel according to claim 1, characterized in that: The grid plate (7) is arranged obliquely in the fixed cover (1), and the bottom surface of the grid plate (7) matches the shape of the bottom surface of the fixed cover (1).

3. The debris prevention device for the dredging head of a trailing suction hopper vessel according to claim 1, characterized in that: The upper blocking rods (11) and the lower blocking rods (10) are arranged in rows at equal intervals, and the upper blocking rods (11) and the lower blocking rods (10) are arranged alternately in space.

4. The debris prevention device for the dredging head of a trailing suction hopper vessel according to claim 1, characterized in that: The spacing between two adjacent upper blocking bars (11) is equal to the spacing between two adjacent lower blocking bars (10), and both are 5-8 cm.

5. The debris prevention device for the dredging head of a trailing suction hopper vessel according to claim 1, characterized in that: The rake teeth (4) are provided with second screws (14), and the rake teeth (4) are fixedly connected to the movable cover (2) via the second screws (14).

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