CN217231999U - Drag suction dredger drag head device of anti-sliding drag - Google Patents

Abstract

The utility model relates to a drag suction dredger drag head device of an anti-slide drag. The harrowing device comprises a harrowing head cover box, a mud suction box body and a connecting pipe, wherein the top of the harrowing head cover box is provided with the mud suction box body, the inner cavities of the harrowing head cover box and the harrowing head cover box are communicated, the front part of the mud suction box body is provided with a mud suction pipeline, and the front part of the mud suction pipeline is provided with the connecting pipe with a flange plate; a cross beam is arranged below the rear part of the inner cavity of the drag head cover box, a plurality of drag head bases are arranged on the cross beam, and drag heads are detachably arranged on the drag head bases; a jet flow spray pipe is arranged on the inner side of the rear wall of the drag head cover box, and a conveying water pipe is arranged at the outer end of the jet flow spray pipe; the left side and the right side of the drag head cover box and the front part of the drag head cover box are respectively provided with a lifting hydraulic cylinder, the lower ends of the piston rods of the three groups of lifting hydraulic cylinders are respectively provided with a track straightening component, the left track straightening component and the right track straightening component drive the drag head device to do front-back straightening movement, and the front track straightening component drives the drag head device to do left-right straightening movement. The utility model has the advantages of reasonable design, in time correct the position of harrow head when the swift current harrow problem appears.

Description

Drag suction dredger drag head device of anti-sliding drag

Technical Field

The utility model belongs to the technical field of dredging equipment, especially, relate to a trailing suction hopper dredger drag head device of swift current harrow.

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. A trailing suction hopper dredger is a large self-propelled, binning type hopper dredger equipped with a drag head dredger and a hydraulic suction dredge device. When the dredger is used for dredging, the rake suction pipe is put down to the river bottom, the mud is absorbed from the river bottom through the rake head and the mud suction pipe by utilizing the vacuum action of the mud pump and enters a mud bin of the dredger, and after the mud bin is full, the rake is lifted to sail to a dredging area to open a mud door for dredging, or the dredged mud is directly discharged out of the dredger.

When the existing drag suction dredger is used for slope dredging engineering, the difference between the water depths of a side slope and a navigation channel is larger and larger along with the dredging depth of the navigation channel water depth, and the formed gradient is steeper, so that the problem of drag slip occurs when the angle of an underwater drag head is too large in the construction process of the drag suction dredger, and the drag slip refers to the phenomenon that the underwater drag head cannot keep a set drag suction dredging path (usually keeps the same with the driving path of a ship) and deviates to two sides of the dredging path. When the sliding harrow problem occurs, the underwater dredging effect can not meet the requirement of construction specifications.

An active solution to the sliding rake problem does not exist in the prior art, the underwater drag head suction path is monitored through a ship-mounted monitoring device under a normal condition, and when the sliding rake problem is found through monitoring, the drag head device is enabled to restore the suction path through a method of lifting the drag head device and lowering the drag again. However, the aforesaid solution usually causes a problem of ship shutdown, and the work process of rake lifting and rake re-falling also delays the progress of construction, which affects the efficiency of construction. Therefore, a technical solution capable of preventing the rake slipping problem from occurring or correcting the rake slipping problem in time needs to be developed and designed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem who exists among the known technology and provide a structural design is reasonable prevents drag suction hopper dredger harrow head device of swift current harrow, in time correct the position of harrow head when swift current harrow problem appears, solve current harrow head device because the efficiency of construction reduction problem that swift current harrow problem leads to guarantees the operation effect of dredging construction under water.

The utility model discloses a technical scheme who takes for solving the technical problem that exists among the well-known technique is: a drag suction dredger drag head device of an anti-sliding drag comprises a drag head cover box, the top of which is provided with a mud suction box body, the inner cavities of the drag head cover box and the mud suction box body are communicated, the front part of the mud suction box body is provided with a mud suction pipeline, and the front part of the mud suction pipeline is provided with a connecting pipeline with a flange plate; a cross beam is arranged below the rear part of the inner cavity of the drag head cover box, a plurality of drag head bases are arranged on the cross beam, and drag heads are detachably arranged on the drag head bases; a jet flow spray pipe is arranged on the inner side of the rear wall of the drag head cover box, and a conveying water pipe is arranged at the outer end of the jet flow spray pipe; the left side and the right side of the drag head cover box and the front part of the drag head cover box are respectively provided with a lifting hydraulic cylinder, the lower ends of the piston rods of the three groups of lifting hydraulic cylinders are respectively provided with a track straightening component, the left track straightening component and the right track straightening component drive the drag head device to do front-back straightening movement, and the front track straightening component drives the drag head device to do left-right straightening movement.

The utility model has the advantages that:

the utility model provides a structural design is reasonable prevents trailing suction hopper dredger harrow head device of swift current harrow compares with current harrow head device, the utility model provides a harrow head device through correct the subassembly at left and right sides and front-mounted track, makes harrow head device self possess around the position correct, control the position and correct and twist reverse the position function such as correct, when monitoring the problem that takes place the swift current harrow, can correct the subassembly to the track of this three position of harrow head device in the ship machine control room and carry out motion control respectively, provides gesture and position correction to harrow head device and handles, makes its harrow suction hopper path of restoreing the settlement. Through the trend that monitoring swift current harrow problem took place, also can correct the function that the subassembly action realized preventing the swift current harrow through controlling each track before swift current harrow problem takes place, consequently compare with current harrow head device, the utility model provides a harrow head device prevent swift current harrow ability and the correction ability behind the swift current harrow strong, effectively avoid appearing behind the swift current harrow problem owing to rise the harrow and the boats and ships that lead to when the harrow operation down again excavate mud the efficiency of construction decline problem, promote the operating efficiency of boats and ships facility.

Through installing efflux spray tube and carrying the water pipe at the rear wall of drag head cover case, make high-pressure water source guide to drag head cover incasement and spray towards the rake teeth direction 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 effect of dredging.

Preferably: the track straightening assembly comprises a track base, a first wheel shaft and a second wheel shaft are mounted on the track base, a first crawler wheel is mounted on the first wheel shaft, a second crawler wheel is mounted on the second wheel shaft, and a track is arranged between the first crawler wheel and the second crawler wheel; a driving assembly for driving the crawler to move is arranged on the crawler base.

Preferably: the driving assembly comprises a hydraulic motor and a driving wheel, the hydraulic motor is fixedly arranged at the top of the crawler base, the driving wheel is arranged on an output shaft of the hydraulic motor, and the driving wheel directly drives the crawler to move.

Preferably: a first fixing rod is installed on the outer side of a shell of the hydraulic motor, a connecting block is installed on the crawler base at a position opposite to the hydraulic motor, and a second fixing rod is installed on the outer side of the connecting block; and the lower ends of the piston rods of the two lifting hydraulic cylinders are fixedly connected with the first fixing rod and the second fixing rod respectively.

Preferably: the crawler base is integrally formed by stamping a thick metal plate, and the edge of the upper part of the crawler base is bent outwards and downwards to form a protection plate positioned on the outer side of the middle upper part of the first crawler wheel and the second crawler wheel.

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 plates; each grid cross plate is inclined towards the rear part obliquely downwards.

Drawings

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

FIG. 2 is a schematic view of the structure of the stone-proof grille of FIG. 1;

FIG. 3 is a schematic illustration of the track leveling assembly of FIG. 1.

In the figure:

1. connecting a pipeline; 2. a mud suction pipeline; 3. a stone-proof grid; 3-1, a vertical grid plate; 3-2, a grid transverse plate; 4. a mud suction box body; 5. a lifting hydraulic cylinder; 6. a jet nozzle; 7. a water conveying pipe; 8. a cross beam; 9. a drag head base; 10. a drag head; 11. a track leveling assembly; 11-1, a first crawler wheel; 11-2, a first fixing rod; 11-3, a hydraulic motor; 11-4, driving wheels; 11-5, a track base; 11-6, connecting blocks; 11-7, a second fixing rod; 11-8, a second crawler wheel; 11-9, a crawler; 11-10, a second axle; 11-11, a first axle; 12. drag head cover case.

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 drag head device of the drag suction dredger with the anti-sliding rake of the present invention includes a drag head cover box 12 having a mud suction box body 4 mounted at the top thereof, the drag head cover box 12 is communicated with the inner cavity of the mud suction box body 4, and the bottom of the drag head cover box 12 is open. Slurry obtained by the drag suction mud-digging operation enters the mud suction box body 4 from the drag head cover box 12.

The front part of the mud suction box body 4 is provided with a mud suction pipeline 2, the front part of the mud suction pipeline 2 is provided with a connecting pipeline 1 with a flange plate, and the connecting pipeline 1 is used for being in butt joint connection with a mud discharge pipeline of the drag suction dredger. The mud entering the mud suction box body 4 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 this embodiment, the rock-preventing grille 3 is installed at the front part of the mud suction box 4 and the junction position of the mud suction pipeline 2, and the rock-preventing grille 3 constitutes a filtering device for filtering the rock block in the mud.

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 4. 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 the grid hole of preventing stone grid 3, avoids forming the sinuous flow in connecting tube 1 and row's mud pipeline, helps the high-efficient discharge of mud.

A cross beam 8 is installed below the rear part of the inner cavity of the drag head cover box 12, a plurality of drag head bases 9 are installed on the cross beam 8, and drag heads 10 are detachably installed on the drag head bases 9. The cross beam 8 is used as a mounting cross beam for the drag head base 9 and the drag head 10, the drag head base 9 is fixedly welded with the cross beam 8, and the drag head 10 is fixedly connected with the drag head base 9 through bolts, so that the drag head 10 can be quickly and conveniently replaced when the drag head 10 has a wear problem.

A jet flow spray pipe 6 is arranged on the inner side of the rear wall of the drag head cover box 12, and a conveying water pipe 7 is arranged at the outer end of the jet flow spray pipe 6. Conveying water pipe 7 is used for with external water supply pipeline butt joint, and external water supply pipeline carries high-pressure water source to efflux spray tube 6, has efflux spray tube 6 to carry out high-pressure high-speed injection towards the direction of rake head 10, and the rivers that spray have two effects: one is to carry out strong impact on the mud surface at the bottom of the water and smash the blocky mud blocks; 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.

The left side, the right side and the front part of the drag head cover box 12 are respectively provided with a lifting hydraulic cylinder 5, the lower ends of the piston rods of the three groups of lifting hydraulic cylinders 5 are respectively provided with a track straightening component 11, wherein the left track straightening component 11 and the right track straightening component 11 drive the drag head device to do front-back straightening movement, and the front track straightening component 11 drives the drag head device to do left-right straightening movement. Three lifting hydraulic cylinders 5 and three track of group rectify subassembly 11 and control the action alone in the control room of boats and ships facility, set up lifting hydraulic cylinders 5 and carry out lift drive's effect to track rectify subassembly 11 and be, when the gesture and the position of drag head device need be rectified with track rectify subassembly 11 drop to the position with the contact of submarine mud face, under the non-rectification state, each track rectify subassembly 11 is promoted, avoid causing extra resistance when drag head device drags the line and removes at the submarine.

Referring to fig. 3, it can be seen that:

the track straightening assembly 11 comprises a track base 11-5, a first wheel shaft 11-11 and a second wheel shaft 11-10 are mounted on the track base 11-5, a first track wheel 11-1 is mounted on the first wheel shaft 11-11, a second track wheel 11-8 is mounted on the second wheel shaft 11-10, and a track 11-9 is arranged between the first track wheel 11-1 and the second track wheel 11-8; a driving assembly for driving the track 11-9 to move is mounted on the track base 11-5.

In this embodiment, the track base 11-5 is integrally formed by stamping a thick metal plate, and the upper edge of the track base is bent outward and downward to form a guard plate located on the outer side of the middle upper portion of the first track wheel 11-1 and the second track wheel 11-8, so as to provide a certain lateral protection effect for the two track wheels.

The driving assembly comprises a hydraulic motor 11-3 and a driving wheel 11-4, wherein the hydraulic motor 11-3 is fixedly arranged at the top of the track base 11-5, the driving wheel 11-4 is arranged on an output shaft of the hydraulic motor 11-3, and the driving wheel 11-4 directly drives the track 11-9 to move.

In this embodiment, a first fixing rod 11-2 is installed outside a casing of the hydraulic motor 11-3, a connection block 11-6 is installed on the crawler base 11-5 at a position opposite to the hydraulic motor 11-3, and a second fixing rod 11-7 is installed outside the connection block 11-6. Two lifting hydraulic cylinders 5 in each group act synchronously, and the lower ends of piston rods of the two lifting hydraulic cylinders 5 are fixedly connected with a first fixed rod 11-2 and a second fixed rod 11-7 respectively.

The hydraulic motors 11-3 of the track straightening assemblies 11 and the lifting hydraulic cylinders 5 are connected into a ship machine control chamber of the trailing suction ship device through hydraulic pipelines and are respectively controlled in the ship machine control chamber, so that specific control of preventing and straightening after trailing rake sliding is realized.

The working process comprises the following steps:

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 ship drags and moves on the path to generate the drag suction dredging effect; the water conveying pipe 7 is connected to a high-pressure water pump of the ship equipment, the high-pressure water pump conveys water to the water conveying pipe 7 and the jet flow spray pipe 6 after pressurizing water source, and strong impact is generated on the underwater mud surface in the drag head cover box 12; the formed rake mud-sucking slurry enters a mud discharge pipeline through a rake head cover box 12, a mud-sucking box body 4, a mud-sucking pipeline 2 and a connecting pipeline 1;

during the trailing suction operation of the trailing suction hopper dredger, a device for monitoring the posture and position of a drag head device on the trailing suction dredger continuously monitors the posture and position of the drag head, and when a controller in a ship machine control room discovers the drag head device with the tendency of slipping or the problem of slipping through the monitoring device, the controller controls three groups of lifting hydraulic cylinders 5 and track straightening assemblies 11 on the drag head device to act independently in the ship machine control room according to the degree and direction of the drag head deviating from the set path of trailing suction;

when the drag head device deviates from the drag suction path from the left and right, the front track straightening component 11 is moved downwards to be contacted with the underwater mud surface (the track straightening components 11 on the two sides are not moved) by controlling the front lifting hydraulic cylinder 5, and then the tracks 11-9 of the track straightening component 11 are controlled to move, so that the drag head device is forced to move in the opposite direction until the drag head device is restored to the set drag suction path; when the posture of the drag head device is abnormal due to the problem of sliding the drag, the left and right lifting hydraulic cylinders 5 are controlled to enable the track straightening assemblies 11 on the two sides to move downwards to be in contact with the underwater mud surface (the front track straightening assembly 11 is not moved), then the two track straightening assemblies 11 are controlled to act, for example, the track 11-9 of the left track straightening assembly 11 moves forwards, the track 11-9 of the right track straightening assembly 11 moves backwards, and the drag head device is twisted towards the right side to adjust the posture.

Claims (7)

1. A drag suction dredger drag head device of an anti-slide drag is characterized in that: the mud suction device comprises a drag head cover box (12) with a mud suction box body (4) arranged at the top, inner cavities of the drag head cover box (12) and the mud suction box body (4) are communicated, a mud suction pipeline (2) is arranged at the front part of the mud suction box body (4), and a connecting pipeline (1) with a flange plate is arranged at the front part of the mud suction pipeline (2); a cross beam (8) is arranged below the rear part of an inner cavity of the drag head cover box (12), a plurality of drag head bases (9) are arranged on the cross beam (8), and drag heads (10) are detachably arranged on each drag head base (9); a jet flow spray pipe (6) is arranged on the inner side of the rear wall of the drag head cover box (12), and a delivery water pipe (7) is arranged at the outer end of the jet flow spray pipe (6); lifting hydraulic cylinders (5) are respectively arranged on the left side and the right side of the drag head cover box (12) and in the front portion of the drag head cover box, crawler belt straightening components (11) are respectively arranged at the lower ends of piston rods of the three groups of lifting hydraulic cylinders (5), the drag head device is driven by the left crawler belt straightening components (11) to perform front-back straightening movement, and the drag head device is driven by the front crawler belt straightening components (11) to perform left-right straightening movement.

2. The drag head apparatus of a drag suction hopper dredger with an anti-skid rake as set forth in claim 1, wherein: the track straightening assembly (11) comprises a track base (11-5), a first wheel shaft (11-11) and a second wheel shaft (11-10) are mounted on the track base (11-5), a first track wheel (11-1) is mounted on the first wheel shaft (11-11), a second track wheel (11-8) is mounted on the second wheel shaft (11-10), and a track (11-9) is arranged between the first track wheel (11-1) and the second track wheel (11-8); a driving assembly for driving the crawler belt (11-9) to move is arranged on the crawler belt base (11-5).

3. The drag head apparatus of a drag suction hopper dredger with an anti-creep rake as claimed in claim 2, characterized in that: the driving assembly comprises a hydraulic motor (11-3) and a driving wheel (11-4), wherein the hydraulic motor (11-3) is fixedly arranged at the top of the track base (11-5), the driving wheel (11-4) is arranged on an output shaft of the hydraulic motor (11-3), and the driving wheel (11-4) directly drives the track (11-9) to move.

4. The drag head device of a drag suction dredger with an anti-skid drag as claimed in claim 3, characterized in that: a first fixing rod (11-2) is installed on the outer side of a shell of the hydraulic motor (11-3), a connecting block (11-6) is installed on the crawler base (11-5) at a position opposite to the hydraulic motor (11-3), and a second fixing rod (11-7) is installed on the outer side of the connecting block (11-6); the number of each group of lifting hydraulic cylinders (5) is two, and the lower ends of piston rods of the two lifting hydraulic cylinders (5) are respectively and fixedly connected with a first fixing rod (11-2) and a second fixing rod (11-7).

5. The drag head apparatus of a drag suction hopper dredger with an anti-creep rake as claimed in claim 4, wherein: the crawler base (11-5) is integrally formed by stamping a thick metal plate, the edge of the upper part of the crawler base is bent outwards and downwards to form a protection plate positioned on the outer side of the middle upper part of the first crawler wheel (11-1) and the second crawler wheel (11-8).

6. The drag head apparatus of a drag suction hopper dredger with an anti-creep rake as claimed in claim 5, wherein: the stone-proof grating (3) is installed at the junction of the front part of the mud suction box body (4) 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 (4).

7. The drag head apparatus of a drag suction hopper dredger with an anti-creep rake as claimed in claim 6, 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.

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