CN219219162U

CN219219162U - Drag head

Info

Publication number: CN219219162U
Application number: CN202223253733.5U
Authority: CN
Inventors: 傅志民; 方利刚; 谷沐阳; 王永星; 袁川; 陈选
Original assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Current assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-20
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a rake head, which comprises a fixed body, wherein the fixed body is of a steel welding structure and is connected with a rake suction pipe through a high-neck flange and a bolt, the fixed body is fixedly connected with one side of an oil cylinder support, a flushing structure is fixed above the fixed body and is used for flushing a rake tooth structure, a hydraulic oil cylinder is arranged in the fixed body, and the hydraulic oil cylinder is fixed on the oil cylinder support. The harrow head is connected between the high-pressure flushing pipe and the harrow tooth water tank through the rubber hose, so that high-pressure water introduced by the high-pressure flushing pipe can directly reach the harrow tooth water tank through the rubber hose, the high-pressure water is flushed out from the harrow tooth water tank, the left plow-shaped tooth and the right plow-shaped tooth fixed on the harrow tooth water tank are directly flushed, the harrow teeth are directly transitioned to the harrow teeth through the tooth seat, the high-pressure flushing pressure loss is reduced, the cleaning effect is enhanced, and the pressure of the high-pressure flushing water conveyed to the movable cover can be adjusted through the manual butterfly valve so as to adapt to different working condition demands.

Description

Drag head

Technical Field

The utility model relates to the technical field of dredging equipment, in particular to a drag head.

Background

In the dredging industry, a drag suction dredger is a large self-propelled, cabin-mounted dredger equipped with drag head dredgers and hydraulic suction devices. When dredging, the harrow straw is put to the water bottom, and the mud is absorbed by the harrow head and the mud absorbing pipe of the harrow suction dredge from the water bottom by utilizing the vacuum action of the mud pump, and enters the mud bin of the dredge, and after the mud bin is full, the harrow is started to sail to the mud throwing area for mud throwing.

At present, when the harrow teeth in the harrow head are used for dredging, a plurality of sludge is adhered to the harrow teeth, so that the efficiency of the mud pump for absorbing the sludge is affected, the harrow heads in the market are generally used for flushing the sludge adhered to the harrow teeth through an external flushing pipe, but when water in the external flushing pipe is transited to the harrow teeth through a tooth holder, the water is subjected to larger pressure loss, and the flushing effect on the sludge on the harrow teeth is affected.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a rake head which comprises a fixed body, wherein the fixed body is fixedly connected with one side of an oil cylinder support, a flushing structure is fixed above the fixed body and used for flushing a rake tooth structure, a hydraulic oil cylinder is arranged in the fixed body and fixed on the oil cylinder support, a movable cover is arranged on the outer side of the rake tooth structure, and the movable cover is hinged with the fixed body.

Preferably, the flushing structure comprises a high-pressure flushing pipe, the high-pressure flushing pipe is connected with one end of a rubber hose, the other end of the rubber hose is connected with a rake tooth water tank, and a manual butterfly valve is arranged between the high-pressure flushing pipe and the rubber hose.

Preferably, the rake tooth structure comprises a tooth seat, the tooth seat is welded on the rake tooth water tank, a left plow tooth and a right plow tooth are fixed on the tooth seat, and the left plow tooth and the right plow tooth are symmetrically arranged on the left and right sides of the center line of the rake head.

Preferably, a sealing gasket is arranged between the fixed body and the rake tooth water tank, the sealing gasket consists of a sealing rubber strip, a seat plate and a pressing plate, the rubber sealing strip is locked by utilizing a bolt and the pressing plate, so that extra water is prevented from entering between the fixed body and the movable cover during dredging, and vacuum loss is reduced.

Preferably, the bottom of the fixed body is welded with a wear-resistant block, the wear-resistant block is made of a composite material, the bottom of the fixed body is welded, the surface of the fixed body is wear-resistant, and excessive wear is prevented when the fixed body is in contact with the seabed.

Preferably, an anti-collision plate is fixed on one side of the fixed body, and the anti-collision plate is arranged on the side, close to the ship body, of the fixed body, so that the drag head is prevented from being damaged due to collision with the ship body.

Preferably, crescent baffles are arranged at the roots of the two sides of the fixed body to prevent seawater from entering the drag head from the two sides of the drag head.

Preferably, the movable cover is internally fixed with a grid, the grid is arranged in the movable cover, large soil blocks or rocks are prevented from entering the pipeline and the impeller to cause blockage, the grid is convenient to replace, and the width of a grid channel is slightly smaller than the passing sphere diameter of the impeller of the mud pump.

Preferably, the left plow-shaped teeth and the right plow-shaped teeth are fastened and sleeved on the tooth holder through spring locks, sixteen tooth holders are arranged, and eight left plow-shaped teeth and eight right plow-shaped teeth are respectively arranged.

Preferably, the fixing body is of a steel welding structure and is connected with the harrow suction pipe through a high-neck flange and bolts.

The technical scheme has the following advantages or beneficial effects:

the high-pressure flushing device is connected between the high-pressure flushing pipe and the rake tooth water tank through the rubber hose, so that the high-pressure water introduced by the high-pressure flushing pipe can directly reach the rake tooth water tank through the rubber hose, the high-pressure water is flushed out from the rake tooth water tank, the left plow-shaped tooth and the right plow-shaped tooth fixed on the rake tooth water tank are directly flushed, the tooth seat is directly used for transiting to the rake tooth, the high-pressure flushing pressure loss is reduced, the cleaning effect is enhanced, and the pressure of the high-pressure flushing water conveyed to the movable cover can be adjusted through the manual butterfly valve so as to adapt to different working condition demands.

Drawings

FIG. 1 is a schematic view of a drag head according to an embodiment of the present utility model;

FIG. 2 is a top view of a drag head according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a drag head in accordance with an embodiment of the present utility model;

fig. 4 is a schematic view of the rake teeth structure of fig. 3.

Legend description:

1. a fixed body; 2. an oil cylinder support; 3. a flushing structure; 4. a rake tooth structure; 5. a hydraulic cylinder; 6. a movable cover; 7. a sealing gasket; 8. a wear block; 9. an anti-collision plate; 10. a crescent baffle; 11. a grille; 12. a high neck flange; 31. a high-pressure flushing pipe; 32. a rubber hose; 33. a tooth water tank; 34. a manual butterfly valve; 41. a tooth holder; 42. left plow-shaped teeth; 43. right plow-type teeth.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

as shown in fig. 1-4, the drag head comprises a fixed body 1, wherein the fixed body 1 is of a steel welding structure and is connected with a drag suction pipe through a high neck flange 12 and a bolt, the fixed body 1 is fixedly connected with one side of an oil cylinder support 2, a flushing structure 3 is fixed above the fixed body 1, the flushing structure 3 is used for flushing a rake tooth structure 4, a hydraulic oil cylinder 5 is arranged in the fixed body 1, the hydraulic oil cylinder 5 is fixed on the oil cylinder support 2, a movable cover 6 is arranged on the outer side of the rake tooth structure 4, and the movable cover 6 is hinged with the fixed body 1; the fixed body 1 is connected with the harrow suction pipe through the high neck flange 12 and the bolt, the hydraulic cylinder 5 fixed on the cylinder support 2 controls the hydraulic rod to drive the movable cover 6 to rotate and adjust, the dredging is carried out, and the washing structure 3 is used for washing the sticky sludge on the harrow teeth of the harrow tooth structure 4.

As shown in fig. 1 and 2, further, a sealing gasket 7 is arranged between the fixed body 1 and the rake teeth water tank 33, the sealing gasket 7 is composed of a sealing rubber strip, a seat board and a pressing board, the sealing rubber strip is locked by bolts and the pressing board, extra water is prevented from entering between the fixed body and the movable cover during dredging, vacuum loss is reduced, the bottom of the fixed body 1 is welded with a wear-resistant block 8, the wear-resistant block 8 is made of a composite material, the bottom is welded, the surface is wear-resistant, excessive wear is prevented when the fixed body 1 is in contact with the sea bottom, an anti-collision plate 9 is fixed on one side of the fixed body 1, the anti-collision plate 9 is arranged on the side of the fixed body 1 close to the ship body, the collision damage of the rake head and the ship body is prevented, crescent baffle plates 10 are arranged on the root parts on two sides of the fixed body 1, and seawater is prevented from entering the rake head from two sides of the rake head for protecting the rake head.

As shown in fig. 1 and 3, the flushing structure 3 comprises a high-pressure flushing pipe 31, the high-pressure flushing pipe 31 is connected with one end of a rubber hose 32, the other end of the rubber hose 32 is connected with a rake tooth water tank 33, a manual butterfly valve 34 is arranged between the high-pressure flushing pipe 31 and the rubber hose 32, left plow teeth 42 and right plow teeth 43 are all fastened and sleeved on a tooth holder 41 through spring locks, sixteen tooth holders 41 are provided, and eight left plow teeth 42 and eight right plow teeth 43 are respectively provided; the high-pressure flushing device is connected between the high-pressure flushing pipe 31 and the rake tooth water tank 33 through the rubber hose 32, so that high-pressure water introduced by the high-pressure flushing pipe 31 can directly reach the rake tooth water tank 33 through the rubber hose 32, the high-pressure water is flushed out from the rake tooth water tank 33, the left plow-shaped tooth 42 and the right plow-shaped tooth 43 fixed on the rake tooth water tank 33 are directly flushed, the high-pressure flushing pressure loss is directly reduced, the cleaning effect is enhanced, and the pressure of the high-pressure flushing water conveyed to the movable cover 6 can be adjusted through the manual butterfly valve 34 so as to adapt to different working condition demands.

Embodiment two:

as shown in fig. 1 and fig. 4, on the basis of the first embodiment, the present utility model provides a technical solution: the rake tooth structure 4 comprises a tooth seat 41, the tooth seat 41 is welded on the rake tooth water tank 33, a left plow-shaped tooth 42 and a right plow-shaped tooth 43 are fixed on the tooth seat 41, and the left plow-shaped tooth 42 and the right plow-shaped tooth 43 are symmetrically arranged on the left and right sides of the center line of the rake head; sixteen tooth holders 41 are transversely welded on the rake tooth water tank 33, eight left plow-shaped teeth 42 and eight right plow-shaped teeth 43 are sleeved on the tooth holders and fastened by utilizing spring locks, and the mounting mode is convenient for the replacement of the rake teeth so as to achieve the purpose of quick maintenance and can quickly replace corresponding rake teeth according to different soil properties.

As shown in fig. 1 and 3, the movable cover 6 is internally fixed with a grating 11, the grating is arranged in the movable cover to prevent large soil blocks or rocks from entering the pipeline and the impeller to cause blockage, the grating is convenient to replace, and the width of a grating channel is slightly smaller than the passing sphere diameter of the impeller of the mud pump.

Working principle: the staff links to each other fixed body 1 and harrow straw through high neck flange 12 and bolt, hydraulic cylinder 5 control hydraulic stem fixed on the hydro-cylinder support 2 drives movable cover 6 and rotates the regulation, carry out the dredging, connect between high pressure flushing pipe 31 and harrow tooth water tank 33 through rubber hose 32, make the high pressure water that is let in by high pressure flushing pipe 31 reach harrow tooth water tank 33 department directly by rubber hose 32, high pressure water washes from harrow tooth water tank 33 department, directly wash left plow tooth 42 and right plow tooth 43 fixed on harrow tooth water tank 33, directly transition to the harrow tooth by the toothholder, reduce high pressure flushing pressure loss, the cleaning performance has been strengthened, the high pressure flushing that the rethread was carried on movable cover 6 accessible manual butterfly valve 34 carries out pressure size adjustment, in order to adapt to different operating mode demands, utilize the spring catch fastening simultaneously, this kind of mounting means is convenient for the change of harrow tooth, and can be according to the quick change of different soil qualities corresponding harrow tooth.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a drag head, its characterized in that, includes fixed body (1), fixed body (1) and hydro-cylinder support (2) one side fixed connection, fixed body (1) top is fixed with washes structure (3), it is used for washing rake teeth structure (4) to wash structure (3), fixed body (1) inside is provided with hydraulic cylinder (5), hydraulic cylinder (5) are fixed on hydro-cylinder support (2), rake teeth structure (4) outside is provided with movable cover (6), movable cover (6) are articulated with fixed body (1).

2. A drag head according to claim 1, characterized in that: the flushing structure (3) comprises a high-pressure flushing pipe (31), the high-pressure flushing pipe (31) is connected with one end of a rubber hose (32), the other end of the rubber hose (32) is connected with a rake tooth water tank (33), and a manual butterfly valve (34) is arranged between the high-pressure flushing pipe (31) and the rubber hose (32).

3. A drag head according to claim 1, characterized in that: the rake tooth structure (4) comprises a tooth holder (41), the tooth holder (41) is welded on the rake tooth water tank (33), a left plow-shaped tooth (42) and a right plow-shaped tooth (43) are fixed on the tooth holder (41), and the left plow-shaped tooth (42) and the right plow-shaped tooth (43) are symmetrically arranged on the left side and the right side of the center line of the rake head.

4. A drag head according to claim 1, characterized in that: a sealing gasket (7) is arranged between the fixed body (1) and the rake teeth water tank (33).

5. A drag head according to claim 1, characterized in that: the bottom of the fixed body (1) is welded with a wear-resistant block (8).

6. A drag head according to claim 1, characterized in that: an anti-collision plate (9) is fixed on one side of the fixed body (1).

7. A drag head according to claim 1, characterized in that: crescent baffles (10) are arranged at the root parts of the two sides of the fixed body (1).

8. A drag head according to claim 1, characterized in that: a grid (11) is fixed inside the movable cover (6).

9. A drag head according to claim 3, characterized in that: the left plow-shaped teeth (42) and the right plow-shaped teeth (43) are fixedly sleeved on the tooth holder (41) through spring locks, sixteen tooth holders (41) are arranged, and eight left plow-shaped teeth (42) and eight right plow-shaped teeth (43) are respectively arranged.

10. A drag head according to claim 1, characterized in that: the fixing body (1) is of a steel welding structure and is connected with the harrow suction pipe through the high neck flange (12) and the bolts.