A multifunctional dredging device suitable for a cross-sea embankment pipe culvert and a construction method thereof

Abstract

The application discloses a multifunctional dredging device suitable for a cross-sea embankment pipe culvert and a construction method thereof, which is placed in the pipe culvert and used for carrying out dredging treatment on dirt in the pipe culvert; the multifunctional dredging device comprises a movable dredging body, a silt loosening mechanism arranged at the lower end of the dredging body and used for loosening the dirt in the pipe culvert, a dirt suction port arranged above the silt loosening mechanism on the dredging body, a dirt discharge pipe communicated with the dirt suction port, a high-pressure water jet hole arranged above the dirt suction port on the dredging body and a waterproof motor for providing power; the silt loosening mechanism comprises a rake head for loosening silt and an inner eight-hinged structure for loosening hard and complex deposited layers. The application utilizes the walking wheels and the silt loosening-dirt suction-dirt discharge-high-pressure water jet flushing and scouring cooperative operation to adapt to the dredging requirements of silt with different depths; the multifunctional dredging device is placed in the pipe culvert and fixed on a working ship by two flexible cables, thereby solving the problems of inconvenient operation and single function of the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dredging engineering, and particularly relates to a multifunctional dredging device suitable for a cross-sea embankment pipe culvert and a construction method thereof. BACKGROUND

[0002] In order to ensure the safe development of the economy and society in coastal areas, cross-sea embankments are built to resist tidal water and maintain the stability of the water level inside the embankment. Large pipe culverts are usually pre-buried in the embankment to realize water exchange between the gulf and the open sea. However, compared with inland pipe culverts, the siltation of cross-sea embankment pipe culverts is more complex and harmful, and the background has the particularity of marine environment. Under the action of tidal water day after day, sea sand and various suspended matters are pushed to the embankment by seawater, and the pipe culvert, as a concentrated channel, is prone to deposit these substances. The marine silt has small particle size and dense sedimentation, resulting in a very fast siltation speed and increased cleaning difficulty. At the same time, there are marine organisms such as shellfish and algae in the marine environment, and a hard sedimentary bottom is formed at the bottom of the pipe culvert. In the case of heavy rain, the accumulated water cannot be discharged, which is easy to cause floods.

[0003] The pipe culvert dredging work is subject to tides and weather, and must be carried out in a very short period of ebb tide. The working space in the pipe culvert is very small, and the working conditions on the sea are poor, so the risks and high costs coexist. At present, several ways are in use, manual dredging is the most basic dredging method but the efficiency is very low, and the working environment is poor and dangerous to life. The hydraulic dredging has a good cleaning effect on the inner wall of the pipe, but it cannot completely remove the stubborn sediments.

[0004] Therefore, in order to meet the existing engineering construction requirements and the low maintenance cost in the later period, and in view of the environmental problems caused by the existing measures, it is urgent to form a multifunctional dredging device suitable for a cross-sea embankment pipe culvert. SUMMARY

[0005] (I) Technical problem to be solved

[0006] The technical problem to be solved by the present application is to provide a multifunctional dredging device suitable for a cross-sea embankment pipe culvert and a construction method thereof, which utilizes walking wheels and silt loosening-silt suction-silt discharge-high pressure water jet flushing and flushing collaborative operation to adapt to the dredging needs of silt of different depths; the multifunctional dredging device is placed in the pipe culvert, and two flexible cables are used to fix the working ship, thereby solving the problems of inconvenient operation and single function of the prior art.

[0007] (II) Technical scheme

[0008] The application solves the above technical problems by adopting a scheme of a multifunctional dredging device suitable for a cross-sea embankment pipe culvert, which is placed in the pipe culvert for dredging the dirt in the pipe culvert; the multifunctional dredging device comprises a movable dredging body, a silt loosening mechanism arranged at the lower end of the dredging body for loosening the dirt in the pipe culvert, a dirt suction port arranged above the silt loosening mechanism on the dredging body, a dirt discharge pipe communicated with the dirt suction port, a high-pressure water jet hole arranged above the dirt suction port on the dredging body, and a waterproof motor for providing power; wherein the silt loosening mechanism comprises rake heads for loosening silt and an inner eight-hinged structure for loosening hard and complex sediment layers.

[0009] Specifically, first, the silt and hard and complex sediment layers in the pipe culvert are loosened by the rake heads and the inner eight-hinged structure, second, the loosened silt and hard and complex sediment layers are sucked away through the dirt suction port, then, the silt and hard and complex sediment layers sucked away through the dirt suction port are discharged to the outside through the dirt discharge pipe, and finally, the silt and hard and complex sediment layers are flushed and cleaned through the high-pressure water jet hole, so as to achieve the purpose of thorough cleaning; at the same time, the walking wheels and the silt loosening-dirt sucking-dirt discharging-high-pressure water jet flushing and flushing cooperative operation are used to adapt to the dredging needs of silt of different depths.

[0010] Moreover, the rake heads are suitable for loosening conventional and relatively soft silt, and the inner eight-hinged structure is used for breaking and loosening the hard and complex sediment layers, so that the multifunctional dredging device can cope with the key of pipe culvert siltation under complex sea conditions, and solves the problem that the efficiency of traditional dredging tools suddenly decreases or cannot be handled when encountering hard sediments.

[0011] By adopting the above scheme, the multifunctional dredging device integrates four function modules of silt loosening, dirt sucking, dirt discharging, and high-pressure water jet flushing, realizes the whole-process integrated cooperative operation of "loosening-sucking-discharging-precision flushing", greatly improves the dredging efficiency and thoroughness, and avoids the trouble of multiple entries and exits and tool replacement of traditional single-function equipment.

[0012] In some embodiments, the inner eight-hinged structure comprises an inner eight-hinged shaft connected with the dredging body, an inner eight-hinged blade arranged in a spiral shape along the length direction of the inner eight-hinged shaft, and a flat blade head fixed on the inner eight-hinged blade along the spiral direction of the inner eight-hinged blade; wherein the inner eight-hinged shaft can rotate around its own center axis relative to the dredging body.

[0013] Specifically, the "spiral-shaped inner eight-hinged blade" and the "flat cutter head" constitute an efficient rotary cutting head; the spiral-shaped inner eight-hinged blade can generate downward cutting force and effect of transporting debris to the center when rotating, and the flat cutter head enhances the crushing and scraping ability; the hard sediment layer is effectively crushed by the rotary power, greatly improving the efficiency and ability of the silt loosing for hard silt, and realizing the technical effect of "adapting to different soil requirements".

[0014] By adopting the above scheme, the inner eight-hinged blade and the flat cutter head can be rotated to loosen the hard and complex sediment layer through the rotatable inner eight-hinged shaft, so as to adapt to different soil requirements.

[0015] In some embodiments, a cable guide pulley is installed in the pipe culvert, two flexible cables are connected to the two ends of the silt removal body, one end of the flexible cable passes through the guide pulley on the inner wall of the pipe culvert and is fixed on the working ship, and the other end is fixed on the silt removal body through a fixing buckle; and the sewage pipe is wound on any flexible cable.

[0016] Specifically, by manually operating the flexible cable on the working ship, the forward movement, backward movement and position of the multifunctional silt removal device in the pipe culvert can be remotely and accurately controlled, and the operation is flexible; the operation position of the silt removal device can be accurately controlled.

[0017] In some embodiments, the sewage pipe is wound on any flexible cable to discharge the dirt to the outside dirt collection place.

[0018] In some embodiments, a sewage discharge channel is arranged in the silt removal body, and the sewage discharge channel is used to connect the sewage suction port and the sewage pipe.

[0019] In some embodiments, two walking wheels are fixed at the two ends of the silt removal body to drive the silt removal body to move in the pipe culvert.

[0020] In some embodiments, an up-down lifting shaft is arranged in the silt removal body to drive the silt removal body to move up and down relative to the walking wheels; so as to achieve the purpose of obstacle crossing, and to achieve the protection purpose of the multifunctional silt removal device and prevent the pipe culvert from being damaged.

[0021] In some embodiments, the up-down lifting shaft is fixed to the silt removal body through a connecting piece, wherein the up-down lifting shaft passes through the walking wheels at both ends and is fixed to the walking wheels through telescopic supports arranged at both ends of the up-down lifting shaft; the telescopic supports are up and down telescopic through hydraulic jacks to drive the up and down movement of the silt removal body; a torsion beam is arranged on the up-down lifting shaft, two longitudinal arms are connected to both ends of the torsion beam, and a spiral spring is sleeved on the two longitudinal arms; the shock absorption of the multifunctional silt removal device is realized through the torsional deformation of the torsion beam and the telescopic extension of the spiral spring.

[0022] In some embodiments, the waterproof motor is arranged above the dredging body, and the outer surface is coated with a waterproof layer to prevent damage to the waterproof motor caused by accumulated water.

[0023] In some embodiments, the top end of the waterproof motor is provided with a handle, which facilitates the carrying, hoisting and removal of the multifunctional dredging device from the pipe culvert, greatly improving the portability and operation convenience of the device.

[0024] In some embodiments, the lower end of the dredging body is provided with two rows of spaced rakes, and the inner eight hinge structures are arranged in the space between the two rows of rakes; the dredging body is provided with two suction ports above the two rows of rakes, and a sewage discharge channel is formed between the two suction ports, the sewage discharge pipe communicates with the sewage discharge channel; the dredging body is provided with two rows of spaced high-pressure water jet holes above the two suction ports.

[0025] Specifically, the openings of the suction ports and the high-pressure water jet holes are arranged downward; and the suction ports are long strip-shaped openings.

[0026] Specifically, in the up-down direction of the dredging body, the rakes, suction ports and high-pressure water jet holes are arranged in sequence from bottom to top; and in the front-back direction of the dredging body, the high-pressure water jet holes, suction ports, rakes, inner eight hinge structures, rakes, suction ports and high-pressure water jet holes are arranged in sequence. The solution adopted by the present application to solve the above technical problems is a construction method of a multifunctional dredging device suitable for a cross-sea embankment pipe culvert, characterized in that it comprises the following steps:

[0027] Step one: place the multifunctional dredging device in the pipe culvert, fix one end of the flexible cable to the dredging body through the fixing buckle, fix the other end of the flexible cable to the working ship through the guide pulley on the inner wall of the pipe culvert, and set up the sewage discharge pipe on one side of the flexible cable;

[0028] Step two: manually operate the walking wheels on the working ship to transport the multifunctional dredging device to the silt deposition site; if the road condition is complex, the waterproof motor is operated to drive the torsion beam to twist and deform and the coil spring to stretch and contract to realize the shock absorption of the multifunctional dredging device;

[0029] Step three: loosen the silt with the rakes, if the deposition layer is hard and complex, use the inner eight hinge structure to loosen it spirally; at the same time, use the suction port to suck the silt, and discharge most of the silt through the sewage discharge pipe; finally, use the high-pressure water jet hole to flush the silt that cannot be contacted by the suction port to remove the residual soil;

[0030] Step four: after the dredging work is completed, remove the sewage discharge pipe and the flexible cable, and take out the multifunctional dredging device.

[0031] (III) Beneficial Effects

[0032] Compared with existing technologies, this invention designs a multifunctional dredging device and its construction method suitable for cross-sea dike culverts.

[0033] (1) The present invention utilizes a combination of walking wheels and sludge loosening, sludge suction, sludge discharge and high-pressure water jet flushing to meet the sludge dredging needs of different depths; the multi-functional sludge dredging device is placed in the culvert and is fixed to the working vessel by two flexible cables, which solves the problems of inconvenient operation and single function of the prior art.

[0034] (2) The present invention uses a rake head and an inner eight-joint structure to loosen the silt and hard complex sediment layer in the culvert; sucks away the loosened silt and hard complex sediment layer through the suction port; discharges the silt and hard complex sediment layer sucked away through the suction port to the outside through the sewage pipe; and flushes the mud and sand and cleans areas that are difficult to reach in the culvert through high-pressure water jet holes, thereby achieving the purpose of thorough cleaning; at the same time, the traveling wheels and the coordinated operation of loosening silt, suction, sewage discharge and high-pressure water jet flushing are used to adapt to the sludge cleaning needs of different depths of silt.

[0035] (3) The rake head of the present invention is suitable for loosening conventional and relatively soft silt; the inner eight-joint structure is used to break and loosen "hard and complex sediment layers", which enables the multi-functional dredging device to deal with the key of culvert silt under complex sea conditions and solves the problem that traditional dredging tools have a sharp drop in efficiency or cannot handle hard sediments.

[0036] (4) The “spiral-arranged inner eight-hinged blade” and “flat blade head” of the present invention constitute a high-efficiency rotary cutting head; the spiral-arranged inner eight-hinged blade can generate a downward cutting force and convey debris to the center when rotating, while the flat blade head enhances the crushing and scraping ability; the hard sediment layer is effectively crushed by the rotational power, which greatly improves the loosening efficiency and ability of hard silt, and realizes the technical effect of “adapting to different soil conditions”.

[0037] (5) Due to the constraints of harsh environment, the present invention replaces manual operation with mechanical operation, which solves the problems of inconvenient operation, low efficiency and harsh working environment; by manually operating the flexible cable on the working vessel, the forward, backward and position of the multi-functional dredging device in the culvert can be remotely and accurately controlled, making the operation flexible; and the working position of the dredging device can be accurately controlled.

[0038] (6) The present invention drives the dredging body to move up and down relative to the walking wheels through the upper and lower lifting shafts; so as to achieve the purpose of overcoming obstacles, so as to achieve the protection purpose of the multi-functional dredging device and prevent damage to the culvert;

[0039] (7) The present invention is low in cost and does not require high technical skills from operators. It is suitable for long-distance culvert operations, which is conducive to pursuing long-term benefits and developing towards intelligentization.

[0040] (8) The present invention realizes the mechanical dredging of cross-sea dike culverts, saves operating costs, and is easy to protect the structure, thereby improving the ecological environment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram illustrating the application of a multifunctional dredging device for cross-sea dike culverts according to the present invention in a culvert.

[0043] Figure 2 This is a schematic diagram of the structure of a multifunctional dredging device for cross-sea dike culverts according to the present invention.

[0044] Figure 3 This is a schematic diagram of the structure of a multifunctional dredging device for cross-sea dike culverts according to the present invention from another angle.

[0045] Figure 4 This is a schematic diagram of the internal eight-joint structure of the present invention;

[0046] Figure 5 This is a schematic diagram of the upper and lower lifting shafts of the present invention.

[0047] The component names corresponding to the various attached labels in the diagram are as follows: 1. Culvert; 2. Multifunctional dredging device; 2-0. Dredging body; 2-0-1. Sewage discharge channel; 2-1. Handle; 2-2. Waterproof motor; 2-3. Flexible cable; 2-3-1. Fixing buckle; 2-4. Sewage pipe; 2-5. Walking wheel; 2-6. High-pressure water jet hole; 2-7. Suction port; 2-8. Rake head; 2-9. Inward octagonal hinge structure; 2-9-1. Inward octagonal hinge blade; 2-9-2. Flat blade head; 2-9-3. Inward octagonal hinge shaft; 2-10. Upward and downward lifting shaft; 2-10-1. Helical spring; 2-10-2. Torsion beam; 2-10-3. Connector; 2-10-4. Telescopic frame; 2-10-5. Hydraulic jack. Detailed Implementation

[0048] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0052] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0053] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0054] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0055] like Figures 1-5 As shown, the present invention provides a multi-functional dredging device suitable for cross-sea dike culverts. The multi-functional dredging device 2 is placed inside the culvert 1 for use in dredging the sludge inside the culvert 1. The multi-functional dredging device 2 includes a movable dredging body 2-0, a sludge loosening mechanism located at the lower end of the dredging body 2-0 for loosening the sludge inside the culvert 1, a suction port 2-7 located on the dredging body 2-0 above the sludge loosening mechanism, a sewage pipe 2-4 communicating with the suction port 2-7, a high-pressure water jet hole 2-6 located on the dredging body 2-0 above the suction port 2-7, and a waterproof motor 2-2 for providing power. The sludge loosening mechanism includes a rake head 2-8 for loosening silt and an inner eight-joint structure 2-9 for loosening hard and complex sediment layers. Specifically, firstly, the silt and hard, complex sediment layers inside the culvert 1 are loosened using the rake head 2-8 and the inner octagonal hinge structure 2-9. Secondly, the loosened silt and hard, complex sediment layers are sucked away through the suction port 2-7. Then, the silt and hard, complex sediment layers sucked away through the suction port 2-7 are discharged to the outside through the discharge pipe 2-4. Finally, the mud and sand are flushed away and areas that are difficult to reach in the culvert 1 are cleaned through the high-pressure water jet hole 2-6, thereby achieving a thorough cleaning. At the same time, the traveling wheels 2-5 and the coordinated operation of silt loosening, suction, discharge, and high-pressure water jet flushing are used to adapt to the dredging needs of silt at different depths. Furthermore, the rake head 2-8 is suitable for loosening conventional and relatively soft silt, and the inner octagonal hinge structure 2-9 is used to break and loosen the "hard, complex sediment layers." This multi-functional dredging device 2 can deal with the key issues of silt accumulation in the culvert 1 under complex sea conditions, solving the problem of the efficiency of traditional dredging tools dropping sharply or being unable to handle hard sediments. By adopting the above solution, the multi-functional dredging device 2 integrates four major functional modules: loosening silt, suctioning sludge, discharging sludge, and high-pressure water jet flushing. It realizes the integrated and coordinated operation of the entire process of "loosening-suctioning-discharging-fine flushing", which greatly improves the efficiency and thoroughness of dredging and avoids the trouble of traditional single-function equipment requiring multiple entries and exits and tool changes.

[0056] In some embodiments, the inner eight-hinged structure 2-9 includes an inner eight-hinged shaft 2-9-3 connected to the dredging body 2-0, an inner eight-hinged blade 2-9-1 arranged spirally along the length direction of the inner eight-hinged shaft 2-9-3, and a flat blade head 2-9-2 fixed on the inner eight-hinged blade 2-9-1 along the spiral direction of the inner eight-hinged blade 2-9-1; wherein the inner eight-hinged shaft 2-9-3 is rotatable relative to the dredging body 2-0 about its own central axis. Specifically, the "spiral-arranged inner-eighths articulated blade 2-9-1" and the "flat cutter head 2-9-2" constitute a highly efficient rotary cutting head. The spiral-arranged inner-eighths articulated blade 2-9-1 generates a downward cutting force and conveys debris towards the center during rotation, while the flat cutter head 2-9-2 enhances the crushing and scraping capabilities. This rotational power effectively breaks up hard sedimentary layers, significantly improving the efficiency and ability to loosen hard silt, achieving the technical effect of "adapting to different soil conditions." Using the above scheme, the rotatable inner-eighths articulated shaft 2-9-3 can drive the inner-eighths articulated blade 2-9-1 and the flat cutter head 2-9-2 to rotate and loosen hard and complex sedimentary layers, thus adapting to different soil conditions.

[0057] In some embodiments, a cable guide pulley 1-1 is installed inside the culvert 1. Two flexible cables 2-3 are connected to both ends of the dredging body 2-0. One end of each flexible cable 2-3 passes through the guide pulley 1-1 on the inner wall of the culvert 1 and is fixed to the work vessel. The other end is fixed to the dredging body 2-0 via a fixing buckle 2-3-1. Furthermore, the sewage pipe 2-4 is wound around either of the flexible cables 2-3. Specifically, by manually operating the flexible cables 2-3 on the work vessel, the forward, backward, and position movements of the multi-functional dredging device 2 within the culvert 1 can be remotely and precisely controlled, allowing for flexible operation and precise control of the dredging device's working position. In some embodiments, the sewage pipe 2-4 is wound around either of the flexible cables 2-3 to discharge sludge to an external sludge collection point. In some embodiments, a sewage discharge channel 2-0-1 is provided inside the dredging body 2-0, which connects the suction port 2-7 and the sewage pipe 2-4.

[0058] In some embodiments, the dredging body 2-0 has two fixed traveling wheels 2-5 at both ends to drive the dredging body 2-0 to move within the culvert 1. In some embodiments, the dredging body 2-0 is internally provided with an up-and-down lifting shaft to drive the dredging body 2-0 to move up and down relative to the traveling wheels 2-5; this achieves obstacle crossing and protects the culvert 1 from damage. In some embodiments, the up-and-down lifting shaft 2-10 is fixed to the dredging body 2-0 by a connector 2-10-3, wherein both ends of the up-and-down lifting shaft 2-10 pass through the traveling wheels 2-5 and are fixed to the traveling wheels 2-5 by telescopic frames 2-10-4 provided at both ends of the up-and-down lifting shaft 2-10; the telescopic frames 2-10-4 are extended and retracted vertically by hydraulic jacks 2-10-5 to drive the up-and-down movement of the dredging body 2-0; a torsion beam 2 is provided on the up-and-down lifting shaft 2-10. -10-2, the torsion beam 2-10-2 is connected to two longitudinal arms at both ends, and a helical spring 2-10-1 is fitted on the two longitudinal arms. The torsional deformation of the torsion beam 2-10-2 and the extension and retraction of the helical spring 2-10-1 are used to achieve shock absorption of the multi-functional dredging device 2. It can effectively absorb and buffer the vibration and impact during the movement process, protect the internal precision components of the multi-functional dredging device 2 from damage, and at the same time keep the suction port 2-7 and the bottom of the culvert 1 at a relatively stable distance, thereby improving the stability of operation and the dredging effect.

[0059] In some embodiments, the waterproof motor 2-2 is positioned above the dredging body 2-0, and its outer surface is coated with a waterproof layer to prevent water accumulation from damaging the waterproof motor 2-2. In some embodiments, a handle 2-1 is provided at the top of the waterproof motor 2-2, which facilitates the handling, hoisting, and removal of the multifunctional dredging device 2 from the culvert 1, greatly improving the portability and ease of operation of the equipment.

[0060] In some embodiments, the lower end of the dredging body 2-0 is provided with two rows of spaced-apart rake heads 2-8 at both ends of its moving direction, and the inner eight-joint structure 2-9 is disposed opposite each other in the space between the two rows of rake heads 2-8; the dredging body 2-0 is provided with two suction ports 2-7 above the two rows of rake heads 2-8, and a sewage discharge channel 2-0-1 is formed between the two suction ports 2-7, and the sewage discharge pipe 2-4 communicates with the sewage discharge channel 2-0-1; the dredging body 2-0 is provided with two rows of spaced-apart high-pressure water jet holes 2-6 above the two suction ports 2-7. Specifically, the openings of the suction ports 2-7 and the openings of the high-pressure water jet holes 2-6 are downwardly oriented; and the suction ports 2-7 are elongated openings. Specifically, in the vertical direction of the dredging body 2-0, a rake head 2-8, a suction port 2-7, and a high-pressure water jet hole 2-6 are arranged sequentially from bottom to top; in the front-back direction of the dredging body 1, a high-pressure water jet hole 2-6, a suction port 2-7, a rake head 2-8, an inner eight-joint structure 2-9, a rake head 2-8, a suction port 2-7, and a high-pressure water jet hole 2-6 are arranged sequentially.

[0061] The following is a specific application scenario of the multifunctional dredging device in this embodiment, but it is not limited to this: The multifunctional dredging device 2 is placed in the culvert 1, and the fixing buckle 2-3-1 at one end of the flexible cable 2-3 is fastened to the multifunctional dredging device, while the other end is fixed to the roller of the work vessel. The operator precisely controls the working position of the dredging device from the work vessel via the flexible cable 2-3. Utilizing the loosening of silt and suction and discharge, most of the sewage is carried out through the sewage pipe 2-4. Finally, the high-pressure water jet holes 2-6 are used to hydraulically flush out areas that are difficult to reach in the culvert 1, achieving thorough cleaning.

[0062] This invention provides a construction method for a multifunctional dredging device suitable for cross-sea dike culverts, characterized by comprising the following steps:

[0063] Step 1: Place the multi-functional dredging device 2 inside the culvert 1, fix one end of the flexible cable 2-3 to the dredging body 2-0 through the fixing buckle 2-3-1, and fix the other end to the working vessel through the guide pulley 1-1 on the inner wall of the culvert 1. At the same time, set up the sewage pipe 2-4 on one side of the flexible cable 2-3.

[0064] Step 2: On the work vessel, manually operate the traveling wheels 2-5 to transport the multi-functional dredging device 2 to the silt deposit location; if encountering complex road conditions, the waterproof motor 2-2 drives the torsion beam 2-10-2 to twist and deform and the spiral spring 2-10-1 to extend and retract to achieve shock absorption of the multi-functional dredging device 2;

[0065] Step 3: Loosen the silt with the rake head 2-8. If a hard and complex sediment layer is encountered, use the inner eight-joint structure 2-9 to loosen it spirally. At the same time as loosening the silt, use the suction port 2-7 to suction out the sludge, and discharge most of the sludge into the culvert 1 through the sewage pipe 2-4. Finally, use the high-pressure water jet hole 2-6 to flush out the silt that the suction port 2-7 cannot reach, and remove the residual soil.

[0066] Step 4: After the dredging work is completed, remove the sewage pipe 2-4 and the flexible cable 2-3, and take out the multi-functional dredging device 2.

[0067] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0068] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multifunctional dredging device suitable for cross-sea dike culverts, characterized in that: The multi-functional dredging device (2) is placed inside the culvert (1) for use and to dredge the dirt inside the culvert (1). The multi-functional dredging device (2) includes a movable dredging body (2-0), a dredging mechanism located at the lower end of the dredging body (2-0) for loosening the dirt inside the culvert (1), a suction port (2-7) located on the dredging body (2-0) above the dredging mechanism, a sewage pipe (2-4) communicating with the suction port (2-7), a high-pressure water jet hole (2-6) located on the dredging body (2-0) above the suction port (2-7), and a waterproof motor (2-2) for providing power. The dredging mechanism includes a rake head (2-8) for loosening the silt and an inner eight-joint structure (2-9) for loosening hard and complex sediment layers. The dredging body (2-0) has two fixed wheels (2-5) at both ends to drive the dredging body (2-0) to move within the culvert (1); the dredging body (2-0) is provided with an up-and-down lifting shaft (2-10) inside to drive the dredging body (2-0) to move up and down relative to the wheels (2-5); the up-and-down lifting shaft (2-10) is fixed to the dredging body (2-0) by a connector (2-10-3), wherein the two ends of the up-and-down lifting shaft (2-10) pass through the wheels (2-5) and are connected by extensions at both ends of the up-and-down lifting shaft (2-10). The telescopic frame (2-10-4) is fixed to the traveling wheels (2-5); the telescopic frame (2-10-4) is extended and retracted by a hydraulic jack (2-10-5) to drive the dredging body (2-0) to move up and down; a torsion beam (2-10-2) is provided on the upper and lower lifting shaft (2-10), and two longitudinal arms are connected to the two ends of the torsion beam (2-10-2). A helical spring (2-10-1) is sleeved on the two longitudinal arms. The shock absorption of the multi-functional dredging device (2) is achieved by the torsional deformation of the torsion beam (2-10-2) and the extension and retraction of the helical spring (2-10-1).

2. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The inner eight-hinged structure (2-9) includes an inner eight-hinged shaft (2-9-3) connected to the dredging body (2-0), an inner eight-hinged blade (2-9-1) arranged spirally along the length of the inner eight-hinged shaft (2-9-3), and a flat blade head (2-9-2) fixed on the inner eight-hinged blade (2-9-1) along the spiral direction of the inner eight-hinged blade (2-9-1); wherein, the inner eight-hinged shaft (2-9-3) is rotatable relative to the dredging body (2-0) around its own central axis.

3. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The culvert (1) is equipped with a cable guide pulley (1-1). The two ends of the dredging body (2-0) are connected to two flexible cables (2-3). One end of the flexible cable (2-3) passes through the guide pulley (1-1) on the inner wall of the culvert (1) and is fixed to the working vessel. The other end is fixed to the dredging body (2-0) by a fixing buckle (2-3-1). The sewage pipe (2-4) is wrapped around any of the flexible cables (2-3).

4. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The dredging body (2-0) is provided with a sewage discharge channel (2-0-1), which is used to connect the sewage suction port (2-7) and the sewage discharge pipe (2-4).

5. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The waterproof motor (2-2) is located above the dredging body (2-0) and its outer surface is coated with a waterproof layer.

6. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The top of the waterproof motor (2-2) is provided with a handle (2-1).

7. The multifunctional dredging device for cross-sea dike culverts according to claim 1, characterized in that: The lower end of the dredging body (2-0) is provided with two rows of spaced rake heads (2-8) at both ends of its moving direction. The inner eight-joint structure (2-9) is located opposite each other in the space between the two rows of rake heads (2-8). The dredging body (2-0) is provided with two suction ports (2-7) above the two rows of rake heads (2-8). A sewage discharge channel (2-0-1) is formed between the two suction ports (2-7). The sewage discharge pipe (2-4) is connected to the sewage discharge channel (2-0-1). The dredging body (2-0) is provided with two rows of spaced high-pressure water jet holes (2-6) above the two suction ports (2-7).

8. A construction method for a multifunctional dredging device applicable to cross-sea dike culverts based on any one of claims 1-7, characterized in that, Includes the following steps: Step 1: Place the multi-functional dredging device (2) inside the culvert (1), fix one end of the flexible cable (2-3) to the dredging body (2-0) through the fixing buckle (2-3-1), and fix the other end through the guide pulley (1-1) on the inner wall of the culvert (1) to the working vessel. At the same time, set up the sewage pipe (2-4) on one side of the flexible cable (2-3). Step 2: Manually operate the walking wheels (2-5) on the work vessel to transport the multi-functional dredging device (2) to the silt deposition site; if encountering complex road conditions, the waterproof motor (2-2) drives the torsion beam (2-10-2) to twist and deform and the spiral spring (2-10-1) to extend and retract to realize the shock absorption of the multi-functional dredging device (2); Step 3: Loosen the silt with the rake head (2-8). If a hard and complex sediment layer is encountered, use the inner eight-joint structure (2-9) for spiral loosening. At the same time as loosening the silt, use the suction port (2-7) to suction out the sludge, and discharge most of the sludge through the sewage pipe (2-4) into the culvert (1). Finally, use the high-pressure water jet hole (2-6) to flush out the silt that the suction port (2-7) cannot reach, and remove the residual soil. Step 4: After the dredging work is completed, remove the sewage pipe (2-4) and flexible cable (2-3), and take out the multi-functional dredging device (2).

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