WO2021253702A1

WO2021253702A1 - Suction dredger for use on underwater hard soil layer

Info

Publication number: WO2021253702A1
Application number: PCT/CN2020/124007
Authority: WO
Inventors: 陈涛; 张耿; 李军堂; 潘东发; 涂满明; 毛伟琦; 舒海华; 杨浩; 查道宏; 罗兵; 张文斌; 宋宇亮; 周琰
Original assignee: 中铁大桥局集团有限公司
Priority date: 2020-06-19
Filing date: 2020-10-27
Publication date: 2021-12-23
Also published as: GB2608735A; CN111691484A; DE112020006430T5; GB202213800D0; US20230349127A1; ZA202207914B

Abstract

The present application relates to a suction dredger for use on an underwater hard soil layer and relates to the technical field of bridge construction equipment. The present suction dredger comprises a mud suctioning mechanism, a mud-breaking mechanism, and a blockage-prevention assembly. The mud suctioning mechanism comprises a pressurizing assembly and a suction dredging pipe. The suction dredging pipe passes through the pressurizing assembly and the two ends thereof at least partially extend past the pressurizing assembly. The side wall of the section of the suction dredging pipe located in the pressurizing assembly is provided with multiple pressurization holes that are inclined upward in the direction from the outer wall to the inner wall. The pressurizing assembly is used for, via the pressurization holes, forming low pressure in the suction dredging pipe. The mud-breaking mechanism comprises at least two mud-breaking assemblies. The mud-breaking assemblies are provided on the bottom of the mud suctioning mechanism and are used for crushing the underwater hard soil layer to assist the suction dredging pipe in suctioning mud. The blockage-prevention assembly is provided on the bottom of the suction dredging pipe. The blockage-prevention assembly is used for preventing the suction dredging pipe from experiencing blockages during the suction process. The suction dredger for use on an underwater soil layer provided in the present application solves the problem in the prior art that when a suction dredger works on an underwater hard soil layer, suction results are poor and blockages are common.

Description

Mud suction machine used for underwater hard soil layer

Technical field

This application relates to the field of bridge construction equipment, in particular to a suction dredge used for underwater hard soil layers.

Background technique

Generally, in the construction of the deep-water caisson foundation of a bridge, the soil at the bottom of the caisson needs to be sucked out before the sinking of the caisson can be carried out, or when the construction of a steel cofferdam is carried out, the conventional double-wall steel enclosure The sinking method of the weir in the overburden is mostly suction sinking. Therefore, the mud suction machine is widely used in bridge construction.

In related technologies, air suction mud facilities are widely used due to their simple construction process, low investment, low cost, and fast mud removal speed. The conventional air suction mud machine is mainly composed of suction head, suction pipe, and high-pressure air. The main principle is to use a large internal and external pressure difference to suck the sediment through the mud suction head. However, this kind of mud suction machine has less disturbance to the overburden, and the mud suction effect is relatively poor, which affects the mud suction quality and mud suction efficiency. At present, in order to improve the mud suction quality and efficiency of the mud suction machine, some auxiliary structures are often added to the machine head, such as a stirring rod, which is used to rotate at a certain speed while the suction head sucks mud to agitate the suction. The sludge around the sludge head can ensure a better suction effect, and it can also better clean up the sludge adsorbed on the head.

However, the current bridge construction sometimes encounters hard soil layers. Existing suction dredges usually work on the upper surface of the soft soil layer. When working on the upper surface of the hard soil layer, they cannot Achieve better mud suction effect; in addition, there are often debris at the bottom of the water, such as large stones, etc., which are more likely to cause blockage of the mud suction head, which greatly affects the mud suction effect.

Summary of the invention

The embodiment of the present application provides a dredge suction machine for underwater hard soil layer, so as to solve the problem of poor mud suction effect and easy clogging when the dredge suction machine operates in the underwater hard soil layer in the related art.

In the first aspect, a dredge suction machine for underwater hard soil layers is provided, which includes:

A mud suction mechanism, which includes a pressurizing assembly and a mud suction pipe. The mud suction pipe passes through the pressurization assembly and has two ends at least partially extending from the pressurization assembly. The side wall of the pipe section of the mud suction pipe is provided with a plurality of pressure-increasing holes inclined upward along the outer wall toward the inner wall, and the pressure-increasing component is used to discharge the mud-water mixture in the suction pipe through the pressure-increasing holes ；

A crushing mud mechanism, which includes at least two crushing mud components, which are arranged at the bottom of the mud suction mechanism and used to crush the underwater hard soil layer to assist the mud suction of the mud suction pipe;

The anti-clogging component is arranged at the bottom of the mud suction pipe, and the anti-clogging component is used to prevent the mud suction pipe from being blocked during the mud suction process.

In some embodiments, the pressurizing component includes:

The air collecting box includes an air collecting cavity, and the air collecting box is configured such that the mud suction pipe penetrates the air collecting box, and the pressure-increasing hole on the mud suction pipe is the same as the air collecting cavity. Cavity connection

The high-pressure air pump is arranged above the wind box and is connected to the top of the wind box through a pipe and communicates with the wind collecting cavity. The high-pressure air pump is used to inject high-velocity air into the wind collecting cavity. The air is used to discharge the mud-water mixture in the mud suction pipe.

In some embodiments, the mud crushing mechanism includes:

A shunt pipe is arranged in the air collecting cavity, and at least two water outlets are arranged on the pipe section of the shunt pipe at intervals, and each of the water outlets is connected to one of the crushed mud components;

The high-pressure water pump is arranged above the wind box and is connected to one end of the shunt pipe through a pipe.

In some embodiments, the mud-crushing assembly includes a water jetting pipe and a nozzle arranged at the end of the water jetting pipe, the water jetting pipe is in communication with the corresponding water outlet, and the connection between the water jetting pipe and the water outlet is provided There is a rotating part, the rotating part is connected with a driving motor, and the driving motor is used to drive the rotating part to rotate to adjust the angle of the water injection pipe.

In some embodiments, the anti-blocking component is detachably connected to the suction pipe, the end of the anti-blocking component away from the suction pipe is zigzag, and the anti-blocking component is provided with a grid in the shape of a cross. Gate.

In some embodiments, the anti-blocking component includes a connector and at least 3 curved anti-blocking parts, the connecting head is annular and rotatably connected to the bottom of the mud suction pipe, and all of the curved anti-blocking parts One end is arranged on the connecting head at intervals, and the bottom of the suction pipe is located in the vertical projection area of all the curved anti-blocking parts, and each curved anti-blocking part is spaced apart on both sides There are multiple anti-blocking heads.

In some embodiments, the angle between the pressurizing hole and the horizontal plane is not less than 45°.

In some embodiments, the top of the mud suction pipe is also connected with a mud outlet pipe, the mud outlet pipe is L-shaped, and the corners are arc-shaped.

In some embodiments, the mud suction pipe and the mud outlet pipe are connected by a connecting flange, and the air collecting box and the pipe on the top thereof are also connected by a connecting flange.

In some embodiments, the number of the crushed mud components is 4-8.

The beneficial effects brought about by the technical solution provided by this application include:

The embodiment of the present application provides a dredge suction machine used for underwater hard soil layers. Since the pressurizing component can pass through the pressurizing hole to form high-velocity air in the suction pipe, the bottom of the suction mechanism is provided with The mud crushing mechanism for crushing the underwater hard soil layer. In addition, the bottom of the suction pipe is also provided with an anti-blocking component that can effectively prevent the suction pipe from being blocked during the mud suction process. Therefore, when the suction dredge is located in the underwater hard soil layer, its suction effect is greatly improved compared with the traditional suction dredge. The main manifestation is that due to the setting of the mud crushing mechanism, it can be easily adsorbed. Hard soil layer, and because it is also equipped with anti-blocking components, it can effectively avoid pipe blockage caused by large soil blocks, hard stones, etc. during the mud suction process, ensuring the smooth progress of mud suction and ensuring the suction of mud Effect.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present application more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a part of the structure of a suction dredge used for underwater hard soil layers provided by an embodiment of the application;

Fig. 2 is a cross-sectional view at 1-1 in Fig. 1 of the embodiment of the application;

Figure 3 is a cross-sectional view at 2-2 in Figure 1 of the embodiment of the application;

Fig. 4 is a cross-sectional view at 3-3 in Fig. 1 of the embodiment of the application;

Fig. 5 is a schematic structural diagram of a mud-crushing assembly of a mud suction machine for underwater hard soil layers provided by an embodiment of the application;

Fig. 6 is a schematic structural diagram of the suction dredge for underwater hard soil provided by an embodiment of the application when the anti-blocking component is not installed;

FIG. 7 is a schematic structural diagram of the anti-blocking component of the suction dredge for underwater hard soil layer provided by an embodiment of the application when in use;

FIG. 8 is a schematic structural diagram of an anti-blocking assembly of a dredge for underwater hard soil layer provided by an embodiment of the application; FIG.

Fig. 9 is a schematic diagram of the distribution of pressurizing holes of a dredge for underwater hard soil layer provided by an embodiment of the application.

In the picture: 10-suction pipe, 11-pressurization hole, 12-air collecting box, 13-outlet pipe, 20-crushing assembly, 21-diversion pipe, 22-jet pipe, 23-nozzle, 3-anti-blocking Components.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments These are a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The embodiment of the present application provides a dredge suction machine for underwater hard soil layer, which can solve the problem of poor mud suction effect and easy blockage of the suction dredge when operating in the underwater hard soil layer in the related art.

As shown in Figures 1 to 2, the mud suction machine mainly includes a mud suction mechanism, a mud crushing mechanism, and an anti-blocking assembly 3. The mud suction mechanism includes a pressurizing assembly and a mud suction pipe 10, and the mud suction pipe 10 passes through On the supercharging assembly and at least partially protruding from both ends of the supercharging assembly, the side wall of the pipe section of the suction pipe 10 located in the supercharging assembly is provided with a plurality of pressurizing holes 11 inclined upward along the outer wall toward the inner wall. The component is used to pass through the pressurizing hole 11 to form an upwardly circulating air flow with a high flow rate in the suction pipe 10 to discharge the mud-water mixture in the suction pipe 10; the crushing mechanism includes at least two crushing components 20. The crushed mud assembly 20 is located at the bottom of the mud suction mechanism and is used to break the underwater hard soil layer to assist the mud suction of the mud suction pipe 10 to ensure the mud suction effect in the hard soil environment; anti-blocking assembly 3 Located at the bottom of the suction pipe 10, the anti-clogging component 3 is used to prevent the suction pipe 10 from being blocked during the suction process. Generally, large soil blocks and hard stones may be sucked during suction. Blocks and other obstructions, the anti-clogging component 3 can effectively prevent pipeline blockage caused by such obstructions.

Specifically, the pressurizing assembly includes a wind box 12 and a high-pressure air pump. The wind box 12 mainly includes a wind collecting cavity. The pressure-increasing holes 11 on the mud pipe 10 are all connected with the air-collecting cavity. The high-pressure air pump is arranged above the air-collecting box 12, generally on a horizontal surface, and is connected to the top of the air-collecting box 12 through a pipe and communicates with the air-collecting cavity. It is used to inject high-velocity air into the air-collecting cavity to form an upwardly circulating air flow in the mud suction pipe 10 with a high-velocity. The specific principle is: when mud suction is needed, start the high-pressure air pump to blow air into the wind box 12, and the high-pressure gas collects in the wind collecting cavity and passes through the booster hole 11, because the direction of the booster hole 11 is inclined upward, see figure Therefore, the high-pressure gas produced by the high-pressure air pump finally enters the mud suction pipe 10 through the pressure-increasing hole 11 and flows upward to discharge the mud-water mixture in the mud suction pipe 10, and subsequent water continues to enter after being discharged, thereby To achieve the purpose of sucking the mud-water mixture outside the pipe into the pipe.

Specifically, as shown in Figures 3 to 5, the mud crushing mechanism mainly includes a shunt pipe 21 and a high-pressure water pump. From the perspective of structural design, the shunt pipe 21 is set in the air-collecting cavity. The shunt pipe 21 is circular, and its pipe section There are at least two water outlets on the upper space. The water outlets extend out of the wind box 12, and each water outlet is connected to one of the mud components 20. The high-pressure water pump is arranged above the wind box 12 and is connected to the flow divider through pipes. One end of the pipe 21 is connected, and the mud-crushing assembly 20 mainly includes a water jetting pipe 22 and a nozzle 23 provided at the end of the water jetting pipe 22, and the water jetting pipe 22 communicates with the corresponding water outlet. The specific principle is: before sucking mud, the hard bottom soil layer needs to be crushed. At this time, the high-pressure water pump is started, and the high-pressure water pump pressurizes the water. The high-pressure water flows along the pipes, the shunt pipe 21 and the water jet pipe 22 and finally passes through the nozzles. 23 shot, the high-pressure water column has a greater impact, so under normal circumstances, it can crush the hard soil under the water.

Specifically, a rotating part is provided at the connection between the water injection pipe 22 and the water outlet, and the rotating part is connected with a driving motor. The driving motor is used to drive the rotating part to rotate within a certain range to adjust the angle of the water injection pipe 22 to ensure that the soil is crushed. When layering, it is easier to break the surrounding soil layer, increase the efficiency of mud suction, and ensure the effect of mud suction. The number of crushed mud assemblies 20 is 4 to 8, and here, the number of crushed mud assemblies 20 is preferably four.

Specifically, referring to Figures 7 and 8, the anti-blocking component 3 is in a cylindrical shape, one end of which is detachably connected to the suction pipe 10, and the end away from the suction pipe 10 is serrated. In addition, the anti-blocking component 3 There is a grid in the shape of a well. The principle of this anti-blocking component 3 is: because the end is sawtooth, when adsorbing larger soil blocks, due to a certain speed, the sawtooth end is enough to break the soil blocks and prevent them from clogging the pipeline; Some stones are often sunk, and some stones are relatively large, and the grid shaped like a tic can effectively block these stones to prevent them from being sucked into the pipe and causing blockage and inconvenient cleaning.

Further, the anti-blocking assembly 3 includes a connector and at least three curved anti-blocking parts. The connecting head is in the shape of a ring and is rotatably connected to the bottom of the mud suction pipe 10. Moreover, the end of the mud suction pipe 10 is located in the vertical projection area of all the curved anti-blocking parts, and a plurality of anti-blocking heads are spaced apart on both sides of each curved anti-blocking part. Specifically, the anti-clogging principle of the anti-clogging assembly 3 of this structure is: when mud is sucked, the nozzle 23 sprays a high-pressure water column to break the hard soil layer, and the mud suction pipe 10 sucks the mud-water mixture into the pipe. , The connecting head continues to rotate, thereby driving the curved anti-blocking piece connected to it to also rotate. The curved anti-blocking piece here is a three-dimensional curved structure, and the width of each curved anti-blocking piece faces away from the suction pipe The direction of 10 is gradually narrowed, and anti-blocking heads are arranged at intervals along the length direction on both sides. Multiple rotating curved anti-blocking pieces are equivalent to forming an anti-blocking protection area at the bottom of the suction pipe 10, when large soil blocks When coming over, the rotating curved anti-blocking piece can easily break the soil block, and when the big stone comes over, the stone may be knocked away or broken by the rotating curved anti-blocking piece, which can effectively prevent these large blocks. Obstacles enter into the suction pipe 10 and cause blockage. In addition, the rotating curved anti-blocking member can also play a role in breaking the hard soil layer to a certain extent, and the auxiliary mud assembly 20 works together.

Specifically, the angle between the pressurizing hole 11 and the horizontal plane is not less than 45° to ensure that the high-pressure gas from the pressurizing hole 11 can go upward. As shown in Fig. 6, the top of the mud suction pipe 10 is also connected with a mud outlet pipe 13, which is L-shaped, and the corners are arc-shaped, which facilitates the discharge of the mud-water mixture. The mud suction pipe 10 and the mud outlet pipe 13 are connected by a connecting flange, and the air collecting box 12 and the pipe on the top thereof are also connected by a connecting flange.

In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description. It does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, It can also be an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.

It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply There is any such actual relationship or sequence between these entities or operations. Moreover, the terms "including", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.

The above are only specific implementations of the application, so that those skilled in the art can understand or implement the application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, this application will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features applied in this document.

Claims

A dredge suction machine used for underwater hard soil layers, which is characterized in that it comprises:

A mud suction mechanism, which includes a pressurizing assembly and a mud suction pipe (10). The mud suction pipe (10) passes through the pressurization assembly and has two ends at least partially extending from the pressurization assembly. The side wall of the pipe section of the suction pipe (10) in the pressurization assembly is provided with a plurality of pressurization holes (11) inclined upward along the outer wall toward the inner wall, and the pressurization assembly is used to pass the pressurization Holes (11) to discharge the mud-water mixture in the mud suction pipe (10);

A crushing mud mechanism, which includes at least two crushing mud components (20), which are arranged at the bottom of the mud suction mechanism and used to crush the underwater hard soil layer to assist the mud suction Mud suction of pipe (10);

The anti-blocking component (3) is arranged at the bottom of the mud suction pipe (10), and the anti-blocking component (3) is used to prevent the mud suction pipe (10) from being blocked during the mud suction process.
The suction dredge for underwater hard soil layers according to claim 1, wherein the pressurizing component comprises:

A wind collecting box (12), which includes a wind collecting cavity, and the wind collecting box (12) is configured such that the suction pipe (10) passes through the wind collecting box (12) and is located in the mud suction box (12). The pressure-increasing holes (11) on the pipe (10) are all connected with the air collection cavity;

The high-pressure air pump is arranged above the wind box (12) and is connected to the top of the wind box (12) through a pipe and communicates with the wind collecting cavity. High-velocity air is injected into the cavity to discharge the mud-water mixture in the mud suction pipe (10).
The mud suction machine for underwater hard soil layers according to claim 2, wherein the mud crushing mechanism comprises:

A shunt pipe (21), which is arranged in the air collection cavity, at least two water outlets are arranged on the pipe section of the shunt pipe (21), and each of the water outlets is connected to one of the crushed mud components (20) Connected;

The high-pressure water pump is arranged above the wind collecting box (12) and is connected to one end of the shunt pipe (21) through a pipe.
The suction dredge used for underwater hard soil layers according to claim 3, characterized in that: the mud-crushing assembly (20) comprises a water jetting pipe (22) and a water jetting pipe (22) arranged on the water jetting pipe (22). At the end of the nozzle (23), the water injection pipe (22) communicates with the corresponding water outlet, and the connection between the water injection pipe (22) and the water outlet is also provided with a rotating piece, and the rotating piece is connected with The driving motor is used to drive the rotating member to rotate to adjust the angle of the water injection pipe (22).
The suction dredge for underwater hard soil layers according to claim 1, characterized in that: the anti-blocking assembly (3) is detachably connected with the suction pipe (10), and the anti-blocking assembly (3) The end of the blocking component (3) away from the mud suction pipe (10) is in a sawtooth shape, and the anti-blocking component (3) is provided with a grid in the shape of a grid.
The suction dredge for underwater hard soil layers according to claim 1, characterized in that: the anti-blocking component (3) comprises a connector and at least 3 curved anti-blocking parts, and the connection The head is ring-shaped and rotatably connected to the bottom of the suction pipe (10), one end of all the curved anti-blocking parts is arranged on the connecting head at intervals, and the bottom of the suction pipe (10) is located at all Within the vertical projection area of the curved anti-blocking member, a plurality of anti-blocking heads are spaced apart on both sides of each curved anti-blocking member.
The suction dredge for underwater hard soil layers according to claim 1, characterized in that the angle between the pressure-increasing hole (11) and the horizontal plane is not less than 45°.
The mud suction machine for underwater hard soil layers according to claim 2, characterized in that: the top of the suction pipe (10) is also connected with a mud discharge pipe (13), and the mud discharge pipe (13) is The tube (13) is L-shaped, and the corners are arc-shaped.
The suction dredge for underwater hard soil layers according to claim 8, characterized in that: the suction pipe (10) and the discharge pipe (13) are connected by a connecting flange, so The collecting air box (12) and the pipe on the top of the collecting air box (12) are also connected by a connecting flange.
The suction dredge for underwater hard soil layers according to claim 1, characterized in that: the number of said broken mud components (20) is 4-8.