CN217232001U - Harrow suction dredger harrow head device with good suction effect - Google Patents

Abstract

The utility model relates to a trailing suction hopper dredger harrow head device with good suction effect. Comprises a fixed drag head part and a movable drag head part; the fixed harrow head part comprises a harrow head cover box of which the top is provided with a mud suction box body, and the front part of the mud suction box body is provided with a mud suction pipeline; the movable rake head part comprises a movable cover box, a cross beam is arranged below the rear part of an inner cavity of the movable cover box, a plurality of rake tooth assemblies are arranged below the front part of the cross beam, a jet flow spray pipe is arranged on the rear wall of the movable cover box, and the outer end of the jet flow spray pipe is connected with a conveying water pipe; the front part of the movable cover box is hinged with the rear part of the drag head cover box, a slurry outlet is arranged on the front wall of the movable cover box, a slurry inlet is arranged on the rear wall of the drag head cover box, and the slurry outlet is connected with the slurry inlet through a connecting pipeline; a swing hydraulic cylinder is arranged between the movable cover box and the drag head cover box. The utility model has the advantages of reasonable design, can go deep into the mud face at the in-process of trailing suction dredging, promote the construction operating efficiency of dredger equipment.

Description

Harrow suction dredger harrow head device with good suction effect

Technical Field

The utility model belongs to the technical field of dredging equipment, especially, relate to a suction dredger harrow head device is inhaled to harrow that suction effect is good.

Background

The dredging engineering refers to an earth and stone engineering which adopts a dredger or other machines and manual work to excavate underwater and is carried out for widening and deepening water areas. The design stress diagram of the dredging engineering trenching causes the change of the internal structure of the water flow by changing the geometric boundary of the water flow of the river channel, so that the newly formed water flow structure can not only ensure that the silt is not deposited in the channel (at least not deposited before the next flood season), but also convey the silt entering the trenching into the lower deep trench, and maintain the stability of the channel. The trailing suction dredger is one of suction dredger devices, loosens soil by using a rake, sucks slurry through rake heads arranged on two sides or the tail of a ship body, and works in a mode of sucking mud and sailing. The drag suction dredger is a large self-propelled and bin-loading dredger equipped with a drag head excavator tool and a hydraulic mud suction device. When the dredger is used for dredging, the rake suction pipe is put down to the river bottom, mud is absorbed from the river bottom through the rake head and the mud suction pipe and enters a mud bin of the dredger under the vacuum action of the mud pump, the rake is lifted to sail to a mud throwing area after the mud bin is full, a mud door is opened, and mud is discharged, or the dug mud is directly discharged out of the dredger.

When the existing drag head device of the drag suction dredger digs deeply, the suction effect of a dredge pump is poor due to the fact that the movable cover does not completely penetrate into the mud surface to cause the influence on the internal vacuum degree of the dredge pump, and further the construction operation efficiency of drag suction dredger equipment is influenced. Therefore, the drag head device of the drag suction dredger needs to be structurally optimized to solve the problem of poor mud drag suction effect caused by the problem that the drag head device cannot penetrate into the mud surface, and the construction operation efficiency of ship facilities is improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the known art and provide a structural design is reasonable, can go deep into the mud face and get into the mud face at the in-process of trailing suction dredge highly controllable suction effect good trailing suction dredger harrow head device, promote the trailing suction effect of mud, promote the construction operating efficiency of dredger equipment.

The utility model discloses a technical scheme who takes for solving the technical problem that exists among the well-known technique is: a harrow head device of a harrow suction type dredger with good suction effect comprises a fixed harrow head part and a movable harrow head part; the fixed harrow head part comprises a harrow head cover box, the top of which is provided with a mud suction box body, the inner cavities of the harrow head cover box and the mud suction box body are communicated, a mud suction pipeline is arranged at the front part of the mud suction box body, and a connecting pipeline with a flange plate is arranged at the front part of the mud suction pipeline; the movable rake head part comprises a movable cover box, a cross beam is arranged below the rear part of an inner cavity of the movable cover box, a plurality of rake tooth assemblies are arranged below the front part of the cross beam, a jet flow spray pipe is arranged on the rear wall of the movable cover box, and the outer end of the jet flow spray pipe is connected with a conveying water pipe; the front part of the movable cover box is hinged with the rear part of the drag head cover box, a slurry outlet is arranged on the front wall of the movable cover box, a slurry inlet is arranged on the rear wall of the drag head cover box, and the slurry outlet is connected with the slurry inlet through a connecting pipeline; the top of the movable cover box is provided with a movable base, the top of the drag head cover box is provided with a fixed base, and a swing hydraulic cylinder is arranged between the movable base and the fixed base.

The utility model has the advantages that:

the utility model provides a rational in infrastructure design's effectual harrow of suction formula dredge harrow head device compares with current harrow head device, the utility model provides a harrow head device comprises articulated fixed harrow head part and activity harrow head part of connecting, through installing swing pneumatic cylinder between the activity cover case at fixed harrow head part's harrow head cover case and activity harrow head part, has realized driving the technological effect that verts to activity cover case through swing pneumatic cylinder, receives the drive of swing pneumatic cylinder and verts the effect after, the bottom of activity cover case can more deeply imbed in the water bottom mud, therefore can guarantee the vacuum of activity cover incasement, is favorable to the dredge pump to apply the pump sending extraction effect to mud, guarantees to harrow the operating efficiency who inhales the dredge.

Through installing efflux spray tube and delivery water pipe on the back wall at the movable cover case, make high-pressure water source guide to the movable cover incasement and spray towards the direction of rake teeth subassembly with the high-speed state of high pressure, be favorable to promoting behind the trailing suction mud and water to mix, reduce mud concentration and promote the mobility of mud, the high-speed rivers of high pressure are favorable to submarine mud dispersion simultaneously, promote the construction effect of trailing suction dredging.

Preferably: the top of the drag head cover box is provided with a water inlet pipe and a water outlet pipe through a supporting seat, the water inlet pipe is communicated with the water outlet pipe, and the water outlet pipe is connected with a conveying water pipe through a high-pressure water pipe.

Preferably: the front middle part of the movable cover box is provided with a front connecting block, the rear middle part of the drag head cover box is provided with a rear connecting block, and the front connecting block is hinged with the rear connecting block.

Preferably: wear-resisting limit piece is all installed at the bottom edge of the lateral wall about the activity cover case, adopts bolt fixed connection between wear-resisting limit piece and the activity cover case.

Preferably: the stone-preventing grid is installed at the front part of the mud suction box body and the junction position of the mud suction pipeline and comprises a plurality of grid vertical plates and grid transverse plates, and the end parts of the grid vertical plates and the grid transverse plates are welded and fixed with the box wall of the mud suction box body.

Preferably: a plurality of bayonets which are arranged at equal intervals from top to bottom are arranged on the plate body of each grid vertical plate, and each grid transverse plate is respectively embedded into each group of bayonets and is welded and fixed with the grid vertical plate; each grid cross plate is inclined towards the rear part obliquely downwards.

Preferably: the bottom of the drag head cover box is open and is detachably provided with a cover box bottom plate.

Preferably: the rake tooth assembly comprises a rake tooth base fixed with the cross beam in a welding mode, and rake teeth are detachably mounted on the rake tooth base.

Drawings

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

fig. 2 is a schematic structural view of the stone-proof grille of fig. 1.

In the figure:

1. connecting a pipeline; 2. a mud suction pipeline; 3. a stone-proof grid; 3-1, grating longitudinal plates; 3-2, a grid transverse plate; 4. a water inlet pipe; 5. a supporting base; 6. a water outlet pipe; 7. a fixed base; 8. a mud suction box body; 9. a swing hydraulic cylinder; 10. connecting a pipeline; 11. a high pressure water pipe; 12. a movable base; 13. a water delivery pipe; 14. a jet nozzle; 15. a cross beam; 16. a drag head assembly; 17. a wear-resistant edge block; 18. a slurry outlet; 19. a front connecting block; 20. a rear connecting block; 21. a slurry inlet; 22. a drag head cover box; 23. a movable cover box; 24. the cover box bottom plate.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.

Referring to fig. 1, the rake head device of the trailing suction hopper dredger with good suction effect of the present invention comprises a fixed rake head part and a movable rake head part, which are hinged to each other, wherein the fixed rake head part is relatively immovable, i.e., is not adjusted, and the movable rake head part is controllable to move during the trailing suction hopper dredger performs trailing suction dredging operation.

The fixed harrow head part comprises a harrow head cover box 22 of which the top is provided with a mud suction box body 8, and the inner cavities of the harrow head cover box 22 and the mud suction box body 8 are communicated. In this embodiment, the drag head cover box 22 is open at the bottom and is detachably mounted with a cover box bottom plate 24. As shown in the figure, the cover box bottom plate 24 includes a plate body with a shape and a size suitable for the bottom opening of the drag head cover box 22, a plurality of ear plates with connecting holes are arranged on the side portions of the plate body, threaded connecting holes are arranged at corresponding positions on the side wall of the drag head cover box 22, and the cover box bottom plate 24 is fixedly connected with the drag head cover box 22 by a plurality of screws and can be detached when necessary.

The front part of the mud suction box body 8 is provided with a mud suction pipeline 2, and the front part of the mud suction pipeline 2 is provided with a connecting pipeline 1 with a flange plate. The connecting pipeline 1 is used for being in butt joint connection with a mud discharge pipeline of drag suction dredger equipment, mud entering the mud suction box body 8 enters the mud suction pipeline 2, and then enters the mud discharge pipeline through the connecting pipeline 1.

Considering that the mud sucked by the drag suction may be mixed with the rock block, in order to avoid the rock block entering the mud discharge pipeline and causing damage or blockage to the system in the mud pump, in the embodiment, the rock-preventing grid 3 is installed at the boundary position of the front part of the mud suction box body 8 and the mud suction pipeline 2, and the rock-preventing grid 3 constitutes a filtering device for filtering the rock block in the mud. The rock block that is held back by preventing stone grid 3 subsides in drag head cover case 22, at the nonoperation stage that drag head device promoted from the bottom to on the drag suction dredger equipment, dismantle cover case bottom plate 24 by the manual work on the boats and ships deck, take out debris such as inside rock block, later install cover case bottom plate 24 again, at the operation in-process of drag suction dredging, the rock block that holds back in drag head cover case 22 can increase the whole weight of drag head device, this helps drag head device to take place the contact and avoid appearing swift current harrow problem to a certain extent between bottom and mud face.

Referring to fig. 2, it can be seen that: the stone-proof grating 3 comprises a plurality of grating vertical plates 3-1 and a plurality of grating transverse plates 3-2, and the end parts of each grating vertical plate 3-1 and each grating transverse plate 3-2 are welded and fixed with the box wall of the mud suction box body 8. Furthermore, as shown in the figure, a plurality of bayonets which are arranged from top to bottom at equal intervals are arranged on the plate body of each grid vertical plate 3-1, and each grid horizontal plate 3-2 is respectively embedded into each group of bayonets and is welded and fixed with the grid vertical plate 3-1; each of the grid cross plates 3-2 is inclined obliquely downward toward the rear. Prevent stone grid 3 still has the effect of carrying out the water conservancy diversion to mud, and mud becomes more stable after through preventing the grid hole of stone grid 3, avoids forming the sinuous flow in connecting tube 1 and row mud pipeline, helps the high-efficient discharge of mud.

The movable rake head part comprises a movable cover box 23, a cross beam 15 is arranged below the rear part of an inner cavity of the movable cover box 23, and a plurality of rake tooth assemblies 16 are arranged below the front part of the cross beam 15. In this embodiment, the tine assembly 16 includes a tine base welded to the cross beam 15, on which tines are removably mounted. The cross beam 15 is used as a mounting cross beam of the drag head base and the drag head, the drag head base is welded and fixed with the cross beam 15, and the drag head is fixedly connected with the drag head base through bolts, so that the drag head can be quickly and conveniently replaced when the wear problem occurs to the drag head.

A jet spray pipe 14 is arranged on the rear wall of the movable cover box 23, and the outer end of the jet spray pipe 14 is connected with a conveying water pipe 13. Conveying water pipe 13 is used for with external water supply pipeline butt joint connection, and external water supply pipeline carries high-pressure water source to efflux spray tube 14, has efflux spray tube 14 to carry out high-pressure high-speed injection towards the direction of rake head, and the rivers that spray have two effects: firstly, strong impact is carried out on the mud surface at the bottom of the water, and blocky mud blocks are crushed; and secondly, the slurry is diluted, the concentration of the slurry is reduced, the fluidity of the slurry is improved, and the slurry trailing and sucking efficiency is improved.

In this embodiment, a water inlet pipe 4 and a water outlet pipe 6 are installed on the top of the drag head cover box 23 through a support seat 5, the water inlet pipe 4 is connected with the water outlet pipe 6 in a through manner, the water outlet pipe 6 is connected with a water conveying pipe 13 through a high-pressure water pipe 11, and the high-pressure water pipe 11 is a high-pressure rubber pipe. The inlet tube 4, outlet pipe 6 and high-pressure water pipe 11 have constituted the partly of external water supply pipeline, and the setting is supported inlet tube 4 and the outlet pipe 6 of installation by supporting seat 5 and can form standard pipeline interface on this drag head device, and external water supply hose can be with inlet tube 4 butt joint, and when high-pressure water pipe 11 needs to be changed and maintained, only need to dismantle former high-pressure water pipe 11 from the drag head device, and the high-pressure water pipe 11 that changes the renewal again can. As shown in the drawing, joints with flanges are provided at both ends of the high pressure water pipe 11, so that the high pressure water pipe 11 is butt-jointed with the outlet pipe 6 and the delivery water pipe 13 through the flanges, which further enhances convenience of pipe connection.

The front part of the movable cover box 23 is hinged with the rear part of the drag head cover box 22, in the embodiment, a front connecting block 19 is arranged in the middle of the front part of the movable cover box 23, a rear connecting block 20 is arranged in the middle of the rear part of the drag head cover box 22, and the front connecting block 19 is hinged with the rear connecting block 20.

A slurry outlet 18 is arranged on the front wall of the movable hood box 23, a slurry inlet 21 is arranged on the rear wall of the drag head hood box 22, and the slurry outlet 18 is connected with the slurry inlet 21 through a connecting pipeline 10. The connecting pipeline 10 is a rubber pipeline with a metal reinforcing lining net inside, as shown in the figure, joints with flange plates are arranged at two ends of the connecting pipeline 10, and therefore the connecting pipeline 10 is in butt joint connection with the slurry inlet 21 and the slurry outlet 18 through flanges, the convenience of pipeline connection is further improved, and when the connecting pipeline 10 needs to be replaced and maintained, the operation is convenient and labor-saving. The original connecting pipe 10 is only required to be disassembled and replaced by a new connecting pipe 10.

A movable base 12 is mounted on the top of the movable cover box 23, a fixed base 7 is mounted on the top of the drag head cover box 22, and a swing hydraulic cylinder 9 is mounted between the movable base 12 and the fixed base 7. As shown in the figure, the rear end of the cylinder body of the swing hydraulic cylinder 9 is hinged with the fixed base 7, the end part of the piston rod of the swing hydraulic cylinder 9 is hinged with the movable base 12, when the piston rod performs telescopic action, the whole movable cover box 23 performs tilting action by taking the hinged shaft as the center, the bottom of the movable cover box 23 is deeper into the mud surface when tilting downwards (anticlockwise direction in fig. 1), the vacuum degree in the box is improved at this moment, when tilting upwards (clockwise direction in fig. 1), the movable cover box 23 is more away from the mud surface, and the vacuum degree in the box is reduced at this moment.

In this embodiment, all install wear-resisting limit piece 17 at the bottom edge of the left and right sides lateral wall of activity cover case 23, adopt bolt fixed connection between wear-resisting limit piece 17 and the activity cover case 23, each wear-resisting limit piece 17's effect promotes the abrasive resistance at activity cover case 23 bottom edge, promotes the life of whole rake head device, when wear-resisting limit piece 17 takes place excessive wearing and tearing, can change it.

The working mode is as follows:

the drag head device is arranged on a mud discharge pipeline of drag suction dredger equipment, and when a ship runs along a set path, the drag head device which is lowered to the bottom of the water drags and moves on the path to generate the drag suction dredging effect; the water inlet pipe 4 is connected to a high-pressure water pump of the ship equipment through a high-pressure rubber pipe or a metal pipe, the high-pressure water pump pressurizes a water source and then conveys the water source to the water inlet pipe 4, the high-pressure water source reaches the conveying water pipe 13 and the jet flow spray pipe 6, and then the high-pressure water source is sprayed into the interior of the jet flow spray pipe 6 at a high speed, so that a strong impact effect is generated on the underwater mud surface in the movable cover box 23; the formed rake mud-suction slurry enters the drag head cover box 22 through the movable cover box 23 and the connecting pipeline 10, then enters the mud-suction box body 8, and then enters the mud discharge pipeline through the mud-suction pipeline 2 and the connecting pipeline 1, and the lump stones in the mud are intercepted by the stone-proof grating 3 on the path.

In the process of drag suction dredging operation, an operator in a ship engine control room of ship equipment controls the piston rod of the swing hydraulic cylinder 9 to extend and retract through the hydraulic station facility, when the piston rod of the swing hydraulic cylinder 9 extends, the movable cover box 23 tilts in the counterclockwise direction in the figure, so that the bottom of the movable cover box 23 is more embedded into the mud surface, the vacuum degree in the movable cover box 23 is raised (i.e. the isolation from the outside is increased), the suction effect generated by the mud pump of the ship facility can better act on the mud in the box, when the piston rod of the swing hydraulic cylinder 9 retracts, the movable cover box 23 tilts in the clockwise direction in the figure, so that the bottom of the movable cover box 23 is less embedded into the mud surface (or more leaves the mud surface), the vacuum degree in the movable cover box 23 is reduced (i.e. the isolation from the outside is reduced, a gap is generated between the bottom edge of the movable cover box 23 and the mud surface, external water and mud can also enter the interior). Therefore, the trailing suction dredging vacuum degree of the drag head device can be controllably adjusted, so that construction operators can selectively adjust and control the drag head device according to the construction operation conditions on site, and the construction effect of dredging operation is improved.

Claims (8)

1. A trailing head device of trailing suction hopper dredger with good suction effect is characterized in that: comprises a fixed drag head part and a movable drag head part; the fixed harrow head part comprises a harrow head cover box (22) the top of which is provided with a mud suction box body (8), the inner cavities of the harrow head cover box (22) and the mud suction box body (8) are communicated, a mud suction pipeline (2) is arranged at the front part of the mud suction box body (8), and a connecting pipeline (1) with a flange plate is arranged at the front part of the mud suction pipeline (2); the movable rake head part comprises a movable cover box (23), a cross beam (15) is arranged below the rear part of an inner cavity of the movable cover box (23), a plurality of rake tooth assemblies (16) are arranged below the front part of the cross beam (15), a jet flow spray pipe (14) is arranged on the rear wall of the movable cover box (23), and the outer end of the jet flow spray pipe (14) is connected with a conveying water pipe (13); the front part of the movable cover box (23) is hinged with the rear part of the drag head cover box (22), a slurry outlet (18) is arranged on the front wall of the movable cover box (23), a slurry inlet (21) is arranged on the rear wall of the drag head cover box (22), and the slurry outlet (18) is connected with the slurry inlet (21) through a connecting pipeline (10); a movable base (12) is installed at the top of the movable cover box (23), a fixed base (7) is installed at the top of the drag head cover box (22), and a swing hydraulic cylinder (9) is installed between the movable base (12) and the fixed base (7).

2. The suction dredge drag head apparatus of claim 1, wherein: the top of the drag head cover box (22) is provided with a water inlet pipe (4) and a water outlet pipe (6) through a supporting seat (5), the water inlet pipe (4) is communicated with the water outlet pipe (6), and the water outlet pipe (6) is connected with a conveying water pipe (13) through a high-pressure water pipe (11).

3. The drag head device of a trailing suction hopper dredger according to claim 2, wherein: the front middle part of the movable cover box (23) is provided with a front connecting block (19), the rear middle part of the drag head cover box (22) is provided with a rear connecting block (20), and the front connecting block (19) is hinged with the rear connecting block (20).

4. The suction dredge drag head apparatus of claim 3, wherein: wear-resisting limit piece (17) are all installed at the bottom edge of the left and right sides lateral wall of activity cover case (23), adopt bolt fixed connection between wear-resisting limit piece (17) and the activity cover case (23).

5. The drag head device of a drag suction dredger with good suction effect as claimed in claim 4, characterized in that: the stone-proof grating (3) is installed at the junction of the front part of the mud suction box body (8) and the mud suction pipeline (2), the stone-proof grating (3) comprises a plurality of grating vertical plates (3-1) and a plurality of grating transverse plates (3-2), and the end parts of each grating vertical plate (3-1) and each grating transverse plate (3-2) are welded and fixed with the box wall of the mud suction box body (8).

6. The suction dredge drag head apparatus of claim 5, wherein: a plurality of bayonets which are arranged from top to bottom at equal intervals are arranged on the plate body of each grid vertical plate (3-1), and each grid transverse plate (3-2) is respectively embedded into each group of bayonets and is welded and fixed with the grid vertical plate (3-1); each grid horizontal plate (3-2) is inclined towards the rear part and obliquely downwards.

7. The suction dredge drag head apparatus of claim 6, wherein: the bottom of the drag head cover box (22) is open and a cover box bottom plate (24) is detachably arranged.

8. The suction dredge drag head apparatus of claim 7, wherein: the rake tooth assembly (16) comprises a rake tooth base welded and fixed with the cross beam (15), and rake teeth are detachably mounted on the rake tooth base.

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