A dredging and transporting tugboat for hydraulic engineering
By using a closed-loop traction rope and hollow shaft tube design, along with the application of float dividers, the problem of traditional tugboats having difficulty turning around in narrow waterways has been solved, achieving efficient bidirectional traction and improving operational efficiency and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-11-17
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional tugboats require cumbersome turning maneuvers when operating in narrow, winding waterways or changing direction, which seriously affects operational efficiency.
The design employs a closed-loop traction rope and a hollow shaft tube to achieve bidirectional traction without the need for turning. Multiple independent buoyancy chambers and elastic support devices are provided through float partitions to ensure the stability and safety of the hull.
It enables efficient operation in narrow waterways without the need for turning around, improving operational efficiency, reducing structural impact, extending equipment life, and enhancing safety and stability.
Smart Images

Figure CN224491236U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a dredging tugboat used for dredging in water conservancy projects. Background Technology
[0002] In water conservancy projects and river dredging, it is often necessary to transport silt from waterways to shore or designated treatment sites. Currently, the main methods of transport are the direct use of barges or tugboats.
[0003] The use of traditional tugboats has the following problems: Traditional tugboats can usually only set up towing points in one direction. When it is necessary to go back and forth or change the direction of travel, a cumbersome turning operation must be carried out, which is extremely difficult and time-consuming in narrow and winding waterways, and seriously limits the efficiency of operation.
[0004] Therefore, there is an urgent need for a dredging tugboat with efficient bidirectional traction capability for dredging in water conservancy projects. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a dredging tugboat for water conservancy projects with efficient bidirectional traction capability.
[0006] To solve the above problems, the present invention adopts the following technical solution:
[0007] A dredging tugboat for dredging water conservancy projects includes:
[0008] The float structure has two float structures, and a traction rope is installed between the two float structures, with the ends of the traction rope connected together.
[0009] A support device is installed between the two float structures.
[0010] The hull is elastically mounted via the support device.
[0011] Preferably, the float structure includes a float, a central tube, end caps, and partition plates. Two end caps are provided and fixed to both ends of the float. The central tube passes through the central axis of the end caps at both ends. Multiple partition plates are provided, and the central tube passes through the surface of the partition plates. The interior of the float is divided into multiple non-communicating buoyancy chambers by the partition plates. The traction rope passes through the central tube.
[0012] Preferably, the float is composed of two semi-shells joined together.
[0013] Preferably, the support device includes two parallel support rods and sleeves welded to both ends of the support rods. The sleeves are fixed to the buoy by screws, and the hull is installed between the two support rods.
[0014] Preferably, insert rods are provided at the bottom positions of both ends of the hull, and through holes are vertically provided through the rod body of the support rod. After the insert rod passes through the through hole downwards, a nut is fitted.
[0015] Preferably, a spring is fitted onto the insertion rod, and the spring acts between the hull and the support rod.
[0016] The beneficial effects of this utility model are:
[0017] The first advantage of this invention lies in its use of a closed-loop traction rope connected end-to-end with a hollow shaft tube. This allows the tugboat to receive traction from either end without any turning or maneuvering during operation. In narrow, winding waterways, this design completely solves the problems of difficult and time-consuming turning of traditional tugboats, enabling "towing and moving as needed" and increasing the efficiency of round-trip operations several times over.
[0018] Secondly, the hull is connected to the support structure via springs, forming an elastic system that acts as a highly efficient shock absorber. When an excavator dumps silt into the hull, this elastic system absorbs and buffers most of the impact energy, greatly reducing the rigid impact on the hull structure and overall frame, effectively preventing structural deformation and damage, and significantly extending the service life of the equipment.
[0019] Thirdly, the tiered buoyancy design, which combines "self-buoyancy of the hull" with "buoyancy provided by the pontoon," ensures safety under all operating conditions, from no load to heavy load. In particular, the multiple independent, sealed buoyancy chambers formed by partitions within the pontoon ensure sufficient buoyancy even if individual chambers are accidentally damaged and flooded, relying on the remaining intact chambers to provide sufficient buoyancy, greatly reducing the risk of overall sinking. Its safety performance far exceeds that of traditional integral pontoons.
[0020] Fourthly, the traction force is transmitted through the central tube and evenly distributed throughout the entire float shell via welded partition plates. This force transmission method avoids stress concentration, making the traction process smoother, and enhancing the structural strength and tensile capacity. Whether traction is unidirectional or bidirectional, it ensures overall stability and reliability.
[0021] Fifthly, the double-buoy design provides a wide buoyancy base on the water, giving the tugboat excellent anti-capsulation stability. At the same time, the structure has a shallow draft, making it very suitable for flexible operation in shallow waters, swamps, and other areas that are difficult for traditional vessels to access, thus expanding its application scenarios. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of this utility model;
[0024] Figure 2 A schematic diagram showing the coordination between the float structure and the support device;
[0025] Figure 3 This is a partial sectional view of the pontoon structure;
[0026] Figure 4 This is a magnified view of point A. Detailed Implementation
[0027] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.
[0028] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0029] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0030] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] See Figure 1 The dredging tugboat shown includes:
[0033] The float structure 1 is provided in two parts, and a traction rope 2 is installed between the two float structures 1. The traction rope 2 is connected end to end; the traction rope 2 can apply traction force from either end.
[0034] Support device 3, which is installed between the two float structures 2.
[0035] Hull 4, which is elastically mounted via the support device 3.
[0036] Hull 4 itself is a sealed structure with an opening at the top, and hull 4 itself has buoyancy.
[0037] After the hull 4 is loaded, it descends in height and then contacts the pontoon structure 1, which provides further buoyancy to prevent the hull 4 from sinking.
[0038] See Figure 2 and Figure 3 As shown, the float structure 1 includes a float 11, a central tube 12, end caps 13, and partition plates 14. Two end caps 13 are provided, welded and fixed to both ends of the float 11. The central tube 12 passes through the central axis of the end caps 13 at both ends, is welded and fixed after passing through, and sealant is applied at the welded positions for further sealing. Multiple partition plates 14 are provided, and the central tube 12 passes through the surface of each partition plate. The interior of the float 11 is divided by the partition plates 14 to form multiple non-communicating buoyancy chambers 15. The traction rope 2 passes through the central tube 12.
[0039] In the above technical solution, the design of the partition plate 14 is adopted, and in conjunction with the shaft tube 12, when the traction rope 2 applies tension, the tension acts on the shaft tube 12, and is then distributed to the float 11 through the partition plate 14, which improves the traction capacity and the overall stability is higher.
[0040] Multiple independent buoyancy chambers 15 are formed by using partition plates 14, which can reduce the probability of sinking even if water seepage occurs.
[0041] The float 11 is composed of two half-shells, upper and lower.
[0042] The detachable float 11 is easy to process and manufacture.
[0043] See Figure 2 As shown, the support device 3 includes two parallel support rods 31 and sleeves 32 welded to both ends of the support rods 31. The sleeves 32 are fixed to the float 11 by screws, and the hull 4 is installed between the two support rods 31.
[0044] In the above technical solution, the combination of support rod 31 and sleeve 32 facilitates connection with float 11 and also facilitates installation of hull 4.
[0045] See Figure 4 As shown, insert rods 41 are provided at the bottom positions of both ends of the hull 4. A through hole (not shown) is vertically provided through the rod of the support rod 31. After the insert rod 41 passes through the through hole downward, it is fitted with a nut 42.
[0046] In the above technical solution, the cooperation between the insert rod 41 and the through hole plays a guiding role, so that the hull 4 is positioned between the two support rods 31.
[0047] Furthermore, the insert rod 41 can slide along the axial direction of the through hole to facilitate the self-floating of the hull 4.
[0048] See Figure 4 As shown, a spring 441 is sleeved on the insertion rod 41, and the spring 441 acts between the hull 4 and the support rod 11.
[0049] In the above technical solution, the design of spring 441 is adopted. When the silt is lowered by the excavator, the impact force on the hull 4 can be mitigated by the spring and water.
[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0054] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.
[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A dredging tugboat for dredging in water conservancy projects, characterized in that, include: The float structure has two float structures, and a traction rope is installed between the two float structures, with the ends of the traction rope connected together. A support device is installed between the two float structures. The hull is elastically mounted via the support device; The float structure includes a float, a central tube, end caps, and partition plates. Two end caps are provided and fixed to both ends of the float. The central tube passes through the central axis of the end caps at both ends. Multiple partition plates are provided, and the central tube passes through the surface of the partition plates. The interior of the float is divided into multiple non-communicating buoyancy chambers by the partition plates. The traction rope passes through the central tube.
2. The dredging tugboat for dredging water conservancy projects according to claim 1, characterized in that: The pontoon is composed of two semi-shells, upper and lower, joined together.
3. The dredging tugboat for dredging water conservancy projects according to claim 1, characterized in that: The support device includes two parallel support rods and sleeves welded to both ends of the support rods. The sleeves are fixed to the buoy by screws, and the hull is installed between the two support rods.
4. The dredging tugboat for water conservancy projects according to claim 3, characterized in that: Insert rods are provided at the bottom of both ends of the hull, and through holes are vertically provided on the rod body of the support rod. After the insert rod passes through the through hole downwards, a nut is fitted.
5. The dredging tugboat for water conservancy projects according to claim 4, characterized in that: A spring is fitted onto the insertion rod, and the spring acts between the hull and the support rod.