CN212248439U

CN212248439U - Sand drag head device for drag suction dredger

Info

Publication number: CN212248439U
Application number: CN201922387923.8U
Authority: CN
Inventors: 文武; 潘春雨; 朱峰; 司品位; 季微微; 孙宇宙; 陈洪亮; 谷沐阳
Original assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Current assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-12-29
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a technical field is dredged in the desilting, and discloses a harrowing suction dredge is with sand harrow head device, including the hubbed flange, and the one end intercommunication of hubbed flange has the harrow straw, the one end fixedly connected with fixed body of harrow straw is kept away from to the hubbed flange, the lower fixed surface of fixed body is connected with wear-resisting piece, the one end that the hubbed flange was kept away from to the fixed body is rotated and is connected with the movable cover, and the movable cover passes through the pneumatic cylinder with the fixed body and is connected, the two rows of parallel arrangement's of inner wall fixedly connected with narrow tooth wide-tooth sub-assembly of movable cover. This kind of drag suction dredge is with sand harrow head device, through setting up narrow tooth, wide tooth sub-assembly, high pressure is washed water and is passed through to the harrow tooth by the toothholder through first nozzle, reduces the high pressure loss of washing water, makes earth break ground, liquefaction, suspension under the effect of high pressure water, forms mud, through setting up the wide tooth of the narrow tooth of type staggered arrangement, can prolong the whole life of harrow head.

Description

Sand drag head device for drag suction dredger

Technical Field

The utility model relates to a desilting dredging equipment technical field specifically is a sand harrow head device for trailing suction dredge.

Background

The drag head is one of the main dredging devices of the drag suction dredger and is arranged at the lower end of a drag suction pipe, when in dredging operation, the drag head is close to the mud surface under the water, the mud is loosened and dredged under the dragging of the dredger, and then the mud and the water are sucked together by a mud pump and are arranged to a mud tank, or the bow jet, the bow throwing or the side throwing are realized, so that the aim of dredging is achieved. The quality of the dredging performance of the drag head directly influences the production efficiency.

In the prior art, when construction is carried out in sand areas similar to silt, medium and fine sand and the like, the surface of the sand is uneven, so that the abrasion to a drag head is large, the service life of the drag head is seriously influenced, the cost of dredging engineering equipment is high, and the construction progress is influenced by frequently replacing the drag head.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a drag suction dredger is with sand harrow head device possesses saving cost, save time, improves advantages such as efficiency of construction, has solved the problem that the background art provided.

(II) technical scheme

For realize above-mentioned saving cost, save time, improve the purpose of efficiency of construction, the utility model provides a following technical scheme: a sandy soil drag head device for a drag suction dredger comprises a high neck flange, one end of the high neck flange is communicated with a drag suction pipe, a fixed body is fixedly connected with one end of the neck flange, which is far away from the rake suction pipe, the lower surface of the fixed body is fixedly connected with a wear-resistant block, one end of the fixed body, which is far away from the neck flange, is rotatably connected with a movable cover, the movable cover is connected with the fixed body through a hydraulic cylinder to adjust the angle of the movable cover, the inner wall of the movable cover is fixedly connected with a combined piece formed by combining two rows of narrow teeth and wide teeth which are arranged in parallel, a plurality of first nozzles are fixedly connected above the narrow-tooth and wide-tooth assembly, a plurality of second nozzles are fixedly connected on one side of the fixed body close to the movable cover, a high-pressure water pipe is fixedly connected on the upper surface of the fixed body, and the high-pressure water pipe is communicated with the first nozzle, the second nozzle and the rake suction pipe, and the two sides of the movable cover are fixedly connected with the wear-resistant baffle plates.

Preferably, the movable cover is of a steel welding structure, the side wall of the movable cover is provided with a water window, and a grid is embedded in the movable cover to play a role in isolating garbage.

Preferably, the narrow-tooth and wide-tooth assembly comprises a tooth flushing pipe, a tooth holder and rake teeth, and the two rows of rake teeth are arranged in a triangle staggered mode and can be interchanged according to working conditions. The horizontal height of the narrow-tooth wide-tooth assembly close to the fixed body is higher than that of the narrow-tooth wide-tooth assembly far away from the fixed body, the uneven phenomenon of construction soil is effectively solved, and two ends of the tooth flushing pipe are respectively communicated with the high-pressure water pipe and the first nozzle.

Preferably, be provided with sealing device between the fixed body and the movable cover, sealing device includes the bedplate, and the bedplate is connected with the last fixed surface of fixed body, the upper surface of bedplate passes through bolt fixedly connected with clamp plate, and fixedly connected with sealing rubber strip between clamp plate and the bedplate, produces the space when preventing the movable cover from rotating, causes the cavitation.

Preferably, the upper surface of the movable cover is fixedly connected with a manual butterfly valve, and the manual butterfly valve is communicated with the high-pressure water pipe to adjust the flow of high-pressure flushing water.

Preferably, be close to the fixed body the toothholder passes through bolt fixedly connected with one row of rake teeth, and keeps away from fixed toothholder and passes through another row of rake teeth of bolt fixedly connected with, and different teeth are suitable for different operating modes, and can exchange according to the operating mode.

(III) advantageous effects

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this kind of drag suction dredge is with sand harrow head device, through setting up the wide tooth sub-assembly of narrow tooth, high pressure is washed water and is passed through to the harrow tooth by the toothholder through first nozzle, reduces the high pressure and washes water the loss, makes earth break ground, liquefaction, suspension under the high pressure water effect, forms mud, through setting up the wide tooth of the narrow tooth of type staggered arrangement, is suitable for different operating modes, can prolong the whole life of harrow head simultaneously.

2. This kind of drag suction dredge is with sand harrow head device locks the rubber seal strip on the bedplate through utilizing bolt and clamp plate, extra water gets into between fixed body and the movable cover when preventing to dredge, reduces the vacuum loss, prevents that the cavitation from producing, prevents excessively wearing and tearing when fixed body and seabed contact through setting up wear-resisting piece, the change of being convenient for simultaneously.

Drawings

Fig. 1 is a perspective schematic view of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic view of a partial structure of the present invention.

In the figure: 1. a neck flange; 2. raking a straw; 3. a fixed body; 4. a hydraulic cylinder; 5. a wear-resistant block; 6. A movable cover; 7. a narrow tooth and wide tooth assembly; 8. a first nozzle; 9. a second nozzle; 10. a high pressure water pipe; 11. a wear-resistant baffle; 12. a water window; 13. a grid; 14. a manual butterfly valve; 15. a sealing device; 71. A tooth flushing pipe; 72. a tooth holder; 73. and (4) rake teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, including a neck flange 1, and one end of the neck flange 1 is connected with a rake suction pipe 2, one end of the neck flange 1 far away from the rake suction pipe 2 is fixedly connected with a fixed body 3, the hull side of the fixed body 3 is provided with an anti-collision device to prevent the rake head from colliding with the hull and being damaged, the root of the fixed body 3 is provided with an anti-abrasion crescent baffle to prevent seawater from entering the rake head from two sides of the rake head, and the upper surface of the fixed body 3 is fixedly connected with a hydraulic cylinder 4, the lower surface of the fixed body 3 is fixedly connected with an anti-abrasion block 5, the anti-abrasion block 5 is made of composite material, the bottom is weldable, the surface is abrasion resistant, the fixed body 3 is prevented from being excessively abraded when contacting with the water bottom, and is convenient to be replaced, one end of the fixed body 3 far away from the neck flange 1 is rotatably connected with a movable cover 6, the movable, and the movable cover 6 is connected with the fixed body 3 through the hydraulic cylinder 4, the swing angle of the movable cover can be adjusted, the movable cover can swing 53 degrees at most, a sealing device 15 is arranged between the fixed body 3 and the movable cover 6, the sealing device 15 comprises a seat plate, the seat plate is fixedly connected with the upper surface of the fixed body 3, the upper surface of the seat plate is fixedly connected with a pressing plate through a bolt, and a sealing rubber strip is fixedly connected between the pressing plate and the seat plate, so that the movable cover is prevented from generating cavitation in the rotating process. Two rows of narrow and wide tooth assemblies 7 which are arranged in parallel are fixedly connected to the inner wall of the movable cover 6, each narrow and wide tooth assembly 7 comprises a tooth flushing pipe 71, a tooth holder 72 and rake teeth 73, the rake teeth 73 are DRC-DJ-2CS01-T-K wide teeth and DRC-DJ-2CS01-T-Z narrow teeth, the two rows of rake teeth 73 are arranged in a shape of a triangle in a staggered mode, the horizontal height of the narrow and wide tooth assembly 7 close to the fixed body 3 is higher than that of the narrow and wide tooth assembly 7 far away from the fixed body, two ends of the tooth flushing pipe 71 are respectively communicated with the high-pressure water pipe 10 and the first nozzles 8, the tooth holder 72 close to the fixed body 3 is fixedly connected with one row of rake teeth 73 through bolts, the tooth holder 72 far away from the fixed body is fixedly connected with the other row of rake teeth 73 through bolts, and a plurality of the first nozzles 8 are fixedly connected above the narrow and wide tooth assembly 7, a plurality of first nozzles 8 are the horizontal arrangement setting, and the one side fixedly connected with a plurality of second nozzles 9 of the stationary body 3 near movable cover 6, a plurality of second nozzles 9 are the horizontal arrangement setting, and the last fixed surface of stationary body 3 is connected with high-pressure water pipe 10, and high-pressure water pipe 10 and first nozzle 8, second nozzle 9 and 2 intercommunication settings of harrow straw, and stationary body 3 is near the both sides fixedly connected with wear-resisting baffle 11 of movable cover 6.

Example 2

Based on embodiment 1, as shown in fig. 2-3, the movable cover 6 is a steel welded structure, the side wall of the movable cover 6 is provided with a water window 12, a grating 13 is embedded in the movable cover 6, the width of a channel of the grating 13 is slightly smaller than the diameter of a passing ball of a mud pump impeller, the upper surface of the movable cover 6 is fixedly connected with a manual butterfly valve 14, and the manual butterfly valve 14 is communicated with a high-pressure water pipe 10, so that high-pressure flushing water conveyed to the movable cover 6 can be switched on and off through the manual butterfly valve 14, and different working condition requirements are met.

The working principle is as follows: when dredging engineering is carried out, the drag head and the drag suction pipe 2 are fixed and then sink to the water bottom, the drag head falls on sand at the water bottom and sinks into the sand at the water bottom, then the drag suction ship and the water pump are started, the drag head is driven to move on the sand along with navigation of the drag suction ship, the wear-resistant baffle 11 and the wear-resistant block 5 are abutted against the sand and are rubbed with the sand, and the situation that the sand directly contacts the bottom of the high-pressure water tank of the drag head to cause abrasion of the bottom plate of the high-pressure water tank is avoided. In order to improve the wear resistance of the drag head, the wear-resistant block 5 and the wear-resistant baffle 11 are replaced after the wear-resistant block 5 and the wear-resistant baffle 11 are worn, on the other hand, the wear-resistant baffle 11 can prevent suspended silt from escaping to two sides due to the disturbance of high-pressure flushing water, the dredging effect is improved, the drag head does not need to be repaired, high-pressure water is conveyed into the high-pressure water pipe 10 from the drag suction pipe 2 along with the operation of the water pump and flows into the first nozzle 8 and the second nozzle 9 from the high-pressure water pipe 10, then the high-pressure water is sprayed out from the two rows of nozzles, so that the silt is broken, liquefied and suspended under the action of the high-pressure water to form slurry, the drag suction pipe 2 is conveyed onto the drag suction ship, the wear of the drag teeth 73 can be reduced, and when the drag head rakes, once the silt of the drag head is blocked, the water window 12 is opened to introduce the water outside the drag head into the drag head, so that, The garbage enters a pipeline and an impeller to cause blockage, the failure rate of dredging is reduced, the rake suction pipe 2 and a mud pump impeller are protected, it is worth mentioning that the surface of the underwater sand is not completely flat, and the hydraulic cylinder 4 can drive the movable cover 6 and the fixed body 3 to move when extending or contracting, so that the included angle between the movable cover 6 and the sand is adjusted, the movable cover 6 is tightly attached to the mud surface to avoid sucking excessive clear water to reduce the mud concentration, and simultaneously, the rake teeth 73 break the soil with reasonable cutting angles and cutting resistance, thereby achieving the purposes of improving the mud concentration and improving the dredging efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sandy soil drag head device for a drag suction dredger comprises a high neck flange (1), wherein one end of the high neck flange (1) is communicated with a drag suction pipe (2);

the method is characterized in that:

the high-neck flange (1) is fixedly connected with a fixed body (3) at one end far away from the rake suction pipe (2), the lower surface of the fixed body (3) is fixedly connected with a wear-resistant block (5), one end of the fixed body (3) far away from the high-neck flange (1) is rotatably connected with a movable cover (6), the movable cover (6) is connected with the fixed body (3) through a hydraulic cylinder (4), the inner wall of the movable cover (6) is fixedly connected with two rows of narrow-tooth and wide-tooth combined parts (7) arranged in parallel, a plurality of first nozzles (8) are fixedly connected above the narrow-tooth and wide-tooth combined parts (7), one side of the fixed body (3) close to the movable cover (6) is fixedly connected with a plurality of second nozzles (9), the upper surface of the fixed body (3) is fixedly connected with a high-pressure water pipe (10), and the high-pressure water pipe (10) is communicated with the first nozzles (8), the second nozzles (9) and the, wear-resistant baffles (11) are fixed on two sides of the movable cover (6).

2. The sand and soil drag head device for the drag suction dredger according to claim 1, wherein: the movable cover (6) is of a steel welding structure, the side wall of the movable cover (6) is provided with a water window (12), and a grating (13) is embedded in the movable cover (6).

3. The sand and soil drag head device for the drag suction dredger according to claim 1, wherein: the narrow-tooth and wide-tooth combined part (7) comprises a tooth flushing pipe (71), a tooth holder (72) and rake teeth (73), the two rows of rake teeth (73) are arranged in a shape of a triangle in a staggered mode, the horizontal height of the narrow-tooth and wide-tooth combined part (7) close to the fixed body (3) is higher than the horizontal height of the narrow-tooth and wide-tooth combined part (7) far away from the fixed body, and two ends of the tooth flushing pipe (71) are respectively communicated with the high-pressure water pipe (10) and the first nozzle (8).

4. The sand and soil drag head device for the drag suction dredger according to claim 1, wherein: be provided with sealing device (15) between fixed body (3) and movable cover (6), sealing device (15) include the bedplate, and the bedplate is connected with the last fixed surface of fixed body (3), the upper surface of bedplate passes through bolt fixedly connected with clamp plate, and fixedly connected with sealing rubber strip between clamp plate and the bedplate.

5. The sand and soil drag head device for the drag suction dredger according to claim 2, wherein: the upper surface of the movable cover (6) is fixedly connected with a manual butterfly valve (14), and the manual butterfly valve (14) is communicated with the high-pressure water pipe (10).

6. The sand and soil drag head device for the drag suction dredger according to claim 3, wherein: the tooth holder (72) close to the fixed body (3) is fixedly connected with one row of rake teeth (73) through a bolt, the tooth holder (72) far away from the fixed body is fixedly connected with the other row of rake teeth (73) through a bolt, and the two rows of rake teeth can be interchanged.