Sediment suction device for underwater construction operation

Abstract

The invention relates to a sediment suction device for underwater construction operation. Comprising a crawler-type walking mechanism, a vertical main spiral reamer mechanism, a sand pumping mechanism and a horizontal auxiliary spiral reamer mechanism, a liftable main reamer frame is connected to the middle of the crawler-type walking mechanism, the vertical main spiral reamer mechanism is arranged in the main reamer frame, and a reamer head is arranged at the output end of the vertical main spiral reamer mechanism; the reamer head can make contact with base layer sediment to be treated along with lifting of the main reamer frame, the reamer head is connected with a power mechanism, the sand pumping and sucking mechanism is arranged on the main reamer frame, and the water pumping end of a water pumping main pipe of the sand pumping and sucking mechanism is arranged at the position matched with the reamer head. The horizontal auxiliary spiral reamer mechanism is arranged at one end of the crawler-type walking mechanism. Remote control or wireless remote control operation can be achieved according to the construction technology requirement, autonomous walking, autonomous stirring, autonomous sand pumping and other operations are achieved, and the device can be used for mud pumping and sand pumping operation in the field of inland river or offshore large underwater shroud pile foundation construction.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater construction operations, and in particular to a sediment suction device for underwater construction operations. Background Art

[0002] In China, for underwater pipe pile foundation construction in inland rivers or offshore areas, the conventional method of pumping mud and sand is to directly insert a mud pump with a pipe, and then use other engineering machinery to stir the mud and sand. Most of these traditional sand extraction devices lack autonomous power and require engineering machinery to stir and cooperate to complete the mud and sand extraction operations. This results in low efficiency and inconvenient maintenance. When it comes to large-scale pipe pile foundation construction, traditional devices are completely inefficient and cannot meet the construction requirements. Therefore, there is an urgent need to develop a large-scale, efficient mud and sand extraction device that can perform autonomous underwater construction operations in deep water or offshore areas. Summary of the Invention

[0003] In response to the technical problems raised above, a sediment extraction device for underwater construction operations is provided. The present invention utilizes a crawler-type walking mechanism, a vertical main spiral reamer mechanism, a sand extraction pumping mechanism, and a horizontal auxiliary spiral reamer mechanism, all in a unique combination and arrangement, to form a novel sediment extraction device suitable for underwater construction operations. The present invention can be remotely controlled or wirelessly remotely controlled according to construction process requirements, enabling autonomous movement, stirring, and sand extraction. It can be used for sediment and sand extraction operations in large-scale underwater pile foundation construction in inland rivers or offshore areas.

[0004] The technical means adopted in the present invention are as follows: A sediment suction device for underwater construction operations comprises a crawler walking mechanism, a vertical main spiral reamer mechanism, a sand suction pump mechanism and a horizontal auxiliary spiral reamer mechanism; a liftable main reamer frame is connected to the middle position of the crawler walking mechanism; the vertical main spiral reamer mechanism is arranged inside the main reamer frame; an output end thereof is a reamer head, which can achieve contact with the sediment of the base layer to be processed as the main reamer frame is raised and lowered; the reamer head is connected to a power mechanism; the sand suction pump mechanism is arranged on the main reamer frame; the water pumping end of the water pumping main of the sand suction pump mechanism is arranged at a position adapted to the reamer head; and the horizontal auxiliary spiral reamer mechanism is arranged at one end of the crawler walking mechanism.

[0005] Furthermore, the crawler-type walking mechanism includes a side frame, a tail middle connecting beam, a head middle connecting beam and a walking drive mechanism. Both ends of the tail middle connecting beam and the head middle connecting beam are connected to the side frames on both sides, and the side frames are installed with track plates; the walking drive mechanism is installed at the tail of the side frame and is connected to the crawler installed on the track plates.

[0006] Furthermore, the tail middle connecting beam is provided with a mounting hinge ear for the rear end lifting cylinder of the vertical main spiral reamer mechanism, the head middle connecting beam is provided with a mounting hinge ear for the front end cylinder of the vertical main spiral reamer mechanism, and the head middle connecting beam is also connected with a mounting hinge ear for the auxiliary reamer adjustment cylinder of the horizontal auxiliary spiral reamer mechanism and a mounting hinge ear for the auxiliary suction head frame of the horizontal auxiliary spiral reamer mechanism.

[0007] Furthermore, the crawler-type walking mechanism is also provided with guide wheels, and the guide wheels are in two groups, which are respectively installed on the sides of the tail middle connecting beam and the head middle connecting beam of the crawler-type walking mechanism. The guide wheels are in contact with the guide rails of the vertical main spiral reamer mechanism and complete the lifting and lowering guidance of the vertical main spiral reamer mechanism.

[0008] Furthermore, a hydraulic control station is provided on the crawler-type walking mechanism, which is used to be connected to the hydraulic cylinders for position adjustment of the vertical main spiral reamer mechanism and the horizontal auxiliary spiral reamer mechanism.

[0009] Furthermore, the vertical main spiral reamer mechanism includes the main reamer frame, two sets of front and rear guide rails, two sets of front and rear lifting cylinders, a main reamer drive device, a reamer transmission rod, a cone reamer head and a protective filter. The main reamer frame is connected to the upper end of the lifting cylinder, and the two sets of front and rear guide rails are respectively arranged on both sides of the main reamer frame. The output end of the main reamer drive device is connected to the cone reamer head through the reamer transmission rod, and the main reamer drive device is arranged in the main reamer frame; the protective filter is installed at the bottom of the main reamer frame.

[0010] Furthermore, the sand pumping mechanism includes a suction pump, a T-shaped three-way pipe, a main suction head control valve, a main suction head, an auxiliary suction head control valve, an auxiliary suction head hard pipe, an auxiliary suction head hose and an external discharge pipe. The suction pump is installed on the main reamer frame, the discharge end of which is connected to the external discharge pipe, and the suction end is connected to the water pumping main pipe. The water pumping main pipe is provided with a T-shaped three-way pipe, and the two branches of the pipeline are respectively installed with the main suction head control valve and the auxiliary suction head control valve. The main suction head is installed at the lower part of the main suction head control valve, the end of the auxiliary suction head control valve is connected to the auxiliary suction head hard pipe, the end of the auxiliary suction head hard pipe is connected to the auxiliary suction head hose, and the auxiliary suction head hose is fixed to the auxiliary suction head frame.

[0011] Furthermore, the horizontal auxiliary spiral reamer mechanism includes an auxiliary suction head frame, an auxiliary suction head spiral reamer, an auxiliary reamer driving device and an auxiliary reamer adjustment cylinder. The auxiliary reamer adjustment cylinder is rotatably connected to the crawler walking mechanism, the auxiliary suction head spiral reamer is installed inside the auxiliary suction head frame, and the auxiliary suction head spiral reamer is connected to the auxiliary reamer driving device.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The present invention's vertical main spiral reamer mechanism is capable of vertically penetrating deep into sediment layers. Its conical reamer head is capable of vertically cutting, crushing, and loosening the bottom sediment directly below and in front of the device within a certain range. A horizontal secondary spiral reamer mechanism, mounted at one end of the traveling mechanism, features a secondary suction head spiral reamer that cuts, crushes, and transports sediment from slopes or trench walls in a horizontal or inclined direction, effectively treating sediment at the edges of underwater casing pile foundations. The two mechanisms complement each other in their working ranges, achieving efficient and complete sediment extraction. Furthermore, a lifting cylinder propels the main reamer frame along a guide track, with guide wheels ensuring stability, allowing the main reamer head to engage sediment layers of varying depths or be completely lifted off the ground. The secondary reamer adjustment cylinder is extended and retracted to adjust the extension length, height, and pitch angle of the secondary suction head frame (containing the secondary reamer) relative to the traveling mechanism. This allows the device to adapt to dredging needs ranging from flat riverbeds / seabeds to slopes of varying gradients.

[0013] 2. The present invention is equipped with a main suction head sediment layer loosening and mixing device and an auxiliary suction head sediment layer loosening and mixing device, and does not require other large-scale engineering machinery to cooperate with the work.

[0014] 3. All the power actuators of the present invention, with the support of the control system, can be equipped with remote control technology according to the requirements of the construction process to realize remote control or wireless remote control operation, and realize autonomous movement, autonomous stirring, autonomous sand pumping and other operations.

[0015] 4. Based on the sand extraction requirements of conventional large circular or rectangular cross-sections, a rough estimate shows that the main suction head can efficiently operate approximately 90% of the center area, and the auxiliary suction head can efficiently operate approximately 10% of the corner area. This significantly improves operating efficiency compared to conventional methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a front view of the sediment suction device of the present invention.

[0018] Figure 2 This is a top view of the sediment suction device of the present invention.

[0019] In the figure: 1-1, side frame; 1-2, tail middle connecting beam; 1-3, head middle connecting beam; 1-4, travel drive mechanism; 1-5, guide wheel; 1-6, hydraulic control station; 2-1, main reamer frame; 2-2, guide rail; 2-3, lifting cylinder; 2-4, main reamer drive device; 2-5, reamer transmission rod; 2-6, cone reamer head; 2-7, protective filter; 3-1, suction pump; 3-2, T-type three-way pipe; 3-3, main suction head control valve; 3-4, main suction head; 3-5, auxiliary suction head control valve; 3-6, auxiliary suction head hard pipe; 3-7, auxiliary suction head hose; 3-8, external exhaust pipe; 4-1, auxiliary suction head frame; 4-2, auxiliary suction head spiral reamer; 4-3, auxiliary reamer drive; 4-4, auxiliary reamer adjustment cylinder. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0024] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0025] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0026] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0027] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention discloses a sediment suction device for underwater construction operations, including a crawler walking mechanism, a vertical main spiral reamer mechanism, a sand suction pump mechanism and a horizontal auxiliary spiral reamer mechanism. The middle position of the crawler walking mechanism is connected to a liftable main reamer frame 2-1, the vertical main spiral reamer mechanism is arranged inside the main reamer frame 2-1, and its output end is a reamer head, which can achieve contact with the sediment of the base layer to be treated as the main reamer frame 2-1 is raised and lowered. The reamer head is connected to a power mechanism, the sand suction pump mechanism is arranged on the main reamer frame 2-1, the water pumping end of the water pumping main of the sand suction pump mechanism is arranged at a position adapted to the reamer head, and the horizontal auxiliary spiral reamer mechanism is arranged at one end of the crawler walking mechanism.

[0028] With the exception of the discharge pipe section of the sand pumping mechanism, the majority of the entire device is submerged in water. Therefore, the hydraulic devices and pump motors described below are waterproof motors suitable for underwater use. Waterproof seals are installed on submerged rotating components, such as the reamer drive shaft and cylinder piston rod. This technology represents conventional underwater technology.

[0029] Furthermore, the crawler-type walking mechanism includes a side frame 1-1, a rear intermediate connecting beam 1-2, a head intermediate connecting beam 1-3, and a travel drive mechanism 1-4. Both ends of the rear intermediate connecting beam 1-2 and the head intermediate connecting beam 1-3 are connected to the side frames 1-1 on both sides to form a "mouth"-shaped frame. Each of the side frames 1-1 is equipped with track shoes. The travel drive mechanism is installed at the rear of the side frame 1-1 and is connected to the crawler mounted on the track shoes. The track shoes can be standard shoes or specially made shoes for soft underwater foundations.

[0030] Furthermore, the tail intermediate connecting beam 1-2 is provided with a mounting lug for the rear end lifting cylinder 2-3 of the vertical main spiral reamer mechanism, the head intermediate connecting beam 1-3 is provided with a mounting lug for the front end cylinder of the vertical main spiral reamer mechanism, and the head intermediate connecting beam 1-3 is also connected to the mounting lug for the auxiliary reamer adjustment cylinder 4-4 of the horizontal auxiliary spiral reamer mechanism and the mounting lug for the auxiliary suction head frame 4-1 of the horizontal auxiliary spiral reamer mechanism. The lifting cylinder of the present invention is a cylinder capable of performing a lifting / pressing function.

[0031] Furthermore, the crawler-type walking mechanism is also provided with guide wheels 1-5. The guide wheels 1-5 are in two groups, which are respectively installed on the sides of the tail middle connecting beam 1-2 and the head middle connecting beam 1-3 of the crawler-type walking mechanism. The guide wheels 1-5 are in contact with the guide rails 2-2 of the vertical main spiral reamer mechanism and complete the lifting and lowering guidance of the vertical main spiral reamer mechanism.

[0032] Furthermore, the crawler-type travel mechanism is equipped with a hydraulic control station 1-6, which is connected to the hydraulic cylinders used for position adjustment of the vertical main spiral reamer mechanism and the horizontal auxiliary spiral reamer mechanism. Specifically, the hydraulic control station 1-6 is mounted on the rear end of the intermediate connecting beam 1-2 at the rear of the crawler travel mechanism. The travel drive device 1-4 is program-controlled to achieve forward, reverse, differential turning, and rotation functions of the sand pumping device. In this embodiment, the forward, reverse, differential turning, and rotation functions of the sand pumping device can be achieved through program control of the travel drive device.

[0033] Furthermore, the vertical main spiral reamer mechanism includes the main reamer frame 2-1, two sets of front and rear guide rails 2-2, two sets of front and rear lifting cylinders 2-3, a main reamer drive device 2-4, a reamer transmission rod 2-5, a cone head reamer head rod 2-6 and a protective filter 2-7. The main reamer frame 2-1 is connected to the upper end of the lifting cylinder 2-3, and the two sets of front and rear guide rails 2-2 are respectively arranged on both sides of the main reamer frame 2-1 and assembled with the guide wheels 1-5 of the crawler walking device; The lifting cylinder 2-3 is mounted on both sides of the main reamer frame 2-1, with one end fixedly connected to the hinge lug of the main reamer frame 2-1 and the other end fixedly connected to the hinge lugs of the tail intermediate connecting beam 1-2 and the head intermediate connecting beam 1-3. The output end of the main reamer drive device 2-4 is connected to the cone reamer head rod 2-6 via the reamer transmission rod 2-5. The main reamer drive device 2-4 is disposed within the main reamer frame 2-1. The protective filter screen 2-7 is mounted on the bottom of the main reamer frame 2-1. The main reamer drive device 2-4, reamer transmission rod 2-5, and cone reamer head rod 2-6 are provided in multiple sets. In this embodiment, there are four sets, which are respectively disposed at the four corners of the bottom of the main reamer frame, with the center position being the space for the main suction head 3-4. Specifically, the main reamer drive 2-4 will drive the cone reamer head 2-6 to rotate through the reamer transmission rod 2-5; when the lifting cylinder 2-3 is lifted or pressed down, the vertical main spiral reamer device is lifted or pressed down as a whole; when the cone reamer head 2-6 is pressed into the silt or sand layer and rotated, the base layer silt can be loosened and the silt and water can be fully mixed; the protective filter 2-7 can intercept some larger impurities on the outside to prevent the sand pumping system from being blocked and affecting normal operation. The material of the filter can be used to intercept impurities. As an optional embodiment, the protective filter can be made of a stainless steel grille with a mesh size designed according to the expected maximum gravel size. The installation method can be fixed to the support beam at the bottom of the frame using a quick-release buckle or a locking mechanism.

[0034] The guide rails can be made of I-beams, channel steel, square steel, or custom cross-sections such as V-shaped. The guide wheels can be single, double, and / or grooved, allowing for optional replacement based on specific operating conditions. The guide wheels can be single or double, and bearings can be provided at the wheel connections for certain operating conditions.

[0035] In this embodiment, the main reamer frame 2-1 is a frame welded with section steel and plate, and has reamer ears on both sides for mounting with the lifting cylinder 2-3; Furthermore, the sand pumping mechanism includes a suction pump 3-1, a T-shaped three-way pipe 3-2, a main suction head control valve 3-3, a main suction head 3-4, an auxiliary suction head control valve 3-5, an auxiliary suction head hard pipe 3-6, an auxiliary suction head hose 3-7 and an external discharge pipe 3-8. The suction pump 3-1 is installed on the main reamer frame 2-1. In this embodiment, the suction pump 3-1 is installed on the top of the main reamer frame 2-1 of the vertical main spiral reamer device; the discharge end of the suction pump 3-1 is connected to the external discharge pipe 3-8, and the external discharge pipe 3-8 is installed. Mounted on top of the suction pump 3-1, it connects to the land-based discharge pipeline. The suction end is connected to the main pumping pipe, which is equipped with a T-shaped tee 3-2. The two branches of the pipe are respectively equipped with a main suction head control valve 3-3 and an auxiliary suction head control valve 3-5. The main suction head is mounted below the main suction head control valve 3-3. The end of the auxiliary suction head control valve 3-5 is connected to the auxiliary suction head rigid pipe 3-6, which in turn is connected to the auxiliary suction head hose 3-7. The auxiliary suction head hose 3-7 is fixedly connected to the auxiliary suction head frame 4-1. The main suction head 3-4 is fixedly connected to the protective filter 2-7. The connection between the end of the auxiliary suction head rigid pipe 3-6 and the auxiliary suction head hose 3-7 is achieved through a flange clamp and quick connector.

[0036] When the auxiliary suction head control valve 3-5 is closed and the suction pump 3-1 and the main suction head control valve 3-3 are opened, the main suction head 3-4 starts working; when the main suction head control valve 3-3 is closed and the suction pump 3-1 and the auxiliary suction head control valve 3-5 are opened, the horizontal auxiliary spiral reamer device connected to the auxiliary suction head hose 3-7 starts working.

[0037] Furthermore, the horizontal auxiliary spiral reamer mechanism includes an auxiliary suction head frame 4-1, an auxiliary suction head spiral reamer 4-2, an auxiliary reamer drive 4-3 device and an auxiliary reamer adjustment cylinder 4-4, the auxiliary reamer adjustment cylinder 4-4 is rotatably connected to the crawler walking mechanism, the auxiliary suction head spiral reamer 4-2 is installed inside the auxiliary suction head frame 4-1, and the auxiliary suction head spiral reamer 4-2 is connected to the auxiliary reamer drive 4-3 device.

[0038] In this embodiment, the auxiliary suction head frame 4-1 is made of welded plates, and a hinge ear is provided on the back for mounting and connecting the lifting cylinder 2-3 with the middle connecting beam 1-3 of the head, and a hinge ear is also provided for fixing the middle connecting beam 1-3 of the head; the auxiliary suction head frame 4-1 is fixedly connected to the hinge ear connected to the middle connecting beam 1-3 of the head; the auxiliary suction head spiral reamer 4-2 is installed in the auxiliary suction head frame 4-1, and an auxiliary reamer drive 4-3 is installed at the end; one end of the auxiliary reamer adjustment cylinder 4-4 is connected to the mounting hinge ear of the auxiliary suction head frame 4-1, and the other end is connected to the hinge ear of the middle connecting beam 1-3 of the head of the crawler walking device; when the auxiliary reamer adjustment cylinder 4-4 is actuated, the depth to which the auxiliary suction head frame 4-1 shovels mud and sand can be adjusted; when the auxiliary reamer drive 4-3 drives the auxiliary suction head spiral reamer 4-2 to rotate, the base mud and sand can be loosened and the mud and sand can be fully mixed with water.

[0039] The specific working principle of the present invention is as follows: The hydraulic control station 1-6 of the vertical main spiral reamer device of the present invention is the power source of the lifting cylinder 2-3. By lifting or pressing the lifting cylinder 2-3, the vertical main spiral reamer device as a whole is lifted or pressed down. The main reamer drive 2-4 of the present invention drives the cone reamer head 2-6 to rotate through the reamer transmission rod 2-5. Combined with the lifting or pressing function of the lifting cylinder 2-3, when the cone reamer head 2-6 is pressed into the silt or sand layer and rotates, the base layer of silt and sand can be loosened and the silt and water can be fully mixed. The protective filter 2-7 of the patented device can intercept some larger impurities on the outside to prevent them from blocking the sand pumping system and affecting normal operation.

[0040] The suction pump 3-1 of the sand pumping system of the present invention is the main working mechanism, and the function switching of the main and auxiliary suction ports is achieved by controlling the opening and closing of the main suction head control valve 3-3 and the auxiliary suction head control valve 3-5. When the auxiliary suction head control valve 3-5 is closed and the suction pump 3-1 and the main suction head control valve 3-3 are opened, the main suction head 3-4 is put into operation. When the main suction head control valve 3-3 is closed and the suction pump 3-1 and the auxiliary suction head control valve 3-5 are opened, the horizontal auxiliary suction head connected to the auxiliary suction head hose 3-7 is put into operation. The hydraulic control station 1-6 of the vertical main spiral reamer device of this patent is the power source of the auxiliary reamer adjustment cylinder 4-4. When the auxiliary reamer adjustment cylinder 4-4 of the horizontal auxiliary spiral reamer device is activated, the depth of the silt shoveled into the auxiliary suction head frame 4-1 can be adjusted. When the auxiliary reamer drive 4-3 drives the auxiliary suction head spiral reamer 4-2 to rotate, the base layer silt can be loosened and the silt and water can be fully mixed.

[0041] In the present invention, when the lifting cylinder 2-3 drives the vertical main spiral reamer device / sand pumping system to lift / press down, the auxiliary suction head hose 3-7 can adapt to its deformation; in this patent, when the auxiliary reamer adjustment cylinder 4-4 drives the auxiliary suction head frame 4-1 to move and adjust the depth of shoveling mud and sand, the auxiliary suction head hose 3-7 can adapt to its deformation.

[0042] As a scalable implementation, this invention, supported by a control system, can be remotely or wirelessly controlled, enabling autonomous shaping, stirring, and sand extraction, depending on construction process requirements. For sand extraction from a conventional large circular or rectangular cross-section, a rough estimate suggests the main suction head can efficiently operate approximately 90% of the center area, while the auxiliary suction head can efficiently operate approximately 10% of the corner area. This significantly improves operating efficiency compared to conventional methods.

[0043] During the specific use of the present invention, the dredging range, depth, slope gradient, and bottom conditions are first determined. The equipment entry and exit routes and the mud discharge site are planned. Afterwards, the device is moved and / or placed in the predetermined working area by a marine crane / offshore platform crane. After arriving at the working area, the crawler walking mechanism provides mobility, and the hydraulic control station drives the lifting cylinder to push the main reamer frame down along the guide track until the cone reamer head contacts and is appropriately pressed into the mud and sand layer. The guide wheel ensures smooth vertical movement of the frame. The hydraulic control station drives the auxiliary reamer adjustment cylinder to adjust the auxiliary suction head frame to the vicinity of the target slope, and to maintain a suitable working distance and angle between the auxiliary suction head spiral reamer and the slope to be treated.

[0044] Start the hydraulic control station. During operation, the main reamer drive unit drives the cone reamer head through the reamer drive rod to rotate at high speed. The spiral blades and cone head on the reamer head powerfully cut, crush, agitate, and loosen the sediment upwards and toward the center. A protective filter prevents oversized rocks and debris from entering the pump.

[0045] Of course, the auxiliary reamer can work while the main reamer is working, or it can enter the working state only for the mud and sand at the edge of the underwater casing pile foundation. At this time, the auxiliary reamer drive device drives the auxiliary suction head spiral reamer to rotate. The spiral blades cut and crush the mud and sand on the side.

[0046] Depending on the work area, the operator uses the valve to choose to open the main suction head, the auxiliary suction head, or a combination of the two. When the main suction head valve is opened, negative pressure acts on the loose area of ​​the main reamer through the main suction head, sucking the mud-water mixture into the pumping main pipe. When the auxiliary suction head valve is opened, negative pressure acts on the mud and sand transported by the auxiliary reamer through the auxiliary suction head soft and hard pipes, sucking it in. The sucked mud and water mixture is pressurized by the suction pump and transported to the designated discharge location through the external discharge pipe. The device moves forward slowly under the drive of the crawler, and the main and auxiliary reamers continue to crush and loosen the mud and sand in front / side, and the suction pump continues to suck, forming a continuous dredging operation surface. The operator fine-tunes the main reamer depth, auxiliary reamer posture and suction valve opening in real time according to the terrain and dredging depth.

[0047] As an alternative, when working on conventional flat areas, the auxiliary suction head valve can be closed and the main suction head valve opened. Sediment loosened by the primary reamer is directly drawn away by the negative pressure generated by the main suction head. When working in slope trenches, the auxiliary suction head valve can be opened and the main suction head valve closed or turned down. Sediment loosened and transported by the auxiliary reamer is drawn away by the negative pressure generated by the auxiliary suction head. Alternatively, both valves can be opened simultaneously to distribute suction power as needed, simultaneously drawing away sediment from the areas treated by both the primary and auxiliary reamer.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sediment suction device for underwater construction operations, characterized in that: It includes a crawler walking mechanism, a vertical main spiral reamer mechanism, a sand pumping mechanism and a horizontal auxiliary spiral reamer mechanism. The middle position of the crawler walking mechanism is connected to a liftable main reamer frame. The vertical main spiral reamer mechanism is arranged inside the main reamer frame, and its output end is a reamer head, which can contact the mud and sand of the base to be treated as the main reamer frame is raised and lowered. The reamer head is connected to a power mechanism. The sand pumping mechanism is arranged on the main reamer frame. The pumping end of the water pumping main of the sand pumping mechanism is arranged at a position adapted to the reamer head. The horizontal auxiliary spiral reamer mechanism is arranged at one end of the crawler walking mechanism.

2. The sediment suction device for underwater construction operations according to claim 1, characterized in that: The crawler-type walking mechanism includes a side frame, a tail middle connecting beam, a head middle connecting beam and a walking drive mechanism. Both ends of the tail middle connecting beam and the head middle connecting beam are connected to the side frames on both sides, and the side frames are installed with track shoes; the walking drive mechanism is installed at the tail of the side frame and is connected to the crawler installed on the track shoes.

3. The sediment suction device for underwater construction operations according to claim 1, characterized in that: The tail middle connecting beam is provided with a mounting hinge lug for the rear end lifting cylinder of the vertical main spiral reamer mechanism, the head middle connecting beam is provided with a mounting hinge lug for the front end cylinder of the vertical main spiral reamer mechanism, and the head middle connecting beam is also connected with a mounting hinge lug for the auxiliary reamer adjustment cylinder of the horizontal auxiliary spiral reamer mechanism and a mounting hinge lug for the auxiliary suction head frame of the horizontal auxiliary spiral reamer mechanism.

4. The sediment suction device for underwater construction operations according to claim 1, characterized in that: The crawler-type walking mechanism is also provided with guide wheels. There are two sets of guide wheels, which are respectively installed on the sides of the tail middle connecting beam and the head middle connecting beam of the crawler-type walking mechanism. The guide wheels are in contact with the guide rails of the vertical main spiral reamer mechanism and complete the lifting and lowering guidance of the vertical main spiral reamer mechanism.

5. The sediment suction device for underwater construction work according to claim 1, characterized in that: The crawler-type walking mechanism is also provided with a hydraulic control station, which is used to be connected to the hydraulic cylinders for position adjustment of the vertical main spiral reamer mechanism and the horizontal auxiliary spiral reamer mechanism.

6. The sediment suction device for underwater construction work according to claim 1, characterized in that: The vertical main spiral reamer mechanism includes the main reamer frame, two sets of front and rear guide rails, two sets of front and rear lifting cylinders, a main reamer drive device, a reamer transmission rod, a cone reamer head and a protective filter. The main reamer frame is connected to the upper end of the lifting cylinder, and the two sets of front and rear guide rails are respectively arranged on both sides of the main reamer frame. The output end of the main reamer drive device is connected to the cone reamer head through the reamer transmission rod. The main reamer drive device is arranged in the main reamer frame; the protective filter is installed at the bottom of the main reamer frame.

7. The sediment suction device for underwater construction work according to claim 1, characterized in that: The sand pumping mechanism includes a suction pump, a T-shaped three-way pipe, a main suction head control valve, a main suction head, an auxiliary suction head control valve, an auxiliary suction head hard pipe, an auxiliary suction head hose and an external discharge pipe. The suction pump is installed on the main reamer frame, the discharge end of which is connected to the external discharge pipe, and the suction end is connected to the water pumping main pipe. The water pumping main pipe is provided with a T-shaped three-way pipe, and the two branches of the pipeline are respectively installed with the main suction head control valve and the auxiliary suction head control valve. The main suction head is installed at the lower part of the main suction head control valve, the end of the auxiliary suction head control valve is connected to the auxiliary suction head hard pipe, the end of the auxiliary suction head hard pipe is connected to the auxiliary suction head hose, and the auxiliary suction head hose is fixedly connected to the auxiliary suction head frame.

8. The sediment suction device for underwater construction work according to claim 1, characterized in that: The horizontal auxiliary spiral reamer mechanism includes an auxiliary suction head frame, an auxiliary suction head spiral reamer, an auxiliary reamer driving device and an auxiliary reamer adjusting oil cylinder. The auxiliary reamer adjusting oil cylinder is rotatably connected to the crawler walking mechanism. The auxiliary suction head spiral reamer is installed inside the auxiliary suction head frame. The auxiliary suction head spiral reamer is connected to the auxiliary reamer driving device.

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