A pontoon connection device for splicing a box-combined engineering vessel

Abstract

The utility model discloses a kind of for splicing box body combined engineering ship's pontoon connecting device, for connecting several pontoons, including male flange, female flange, bolt and exhaust bolt;Pontoons are equipped with two, respectively first pontoon and second pontoon;Male flange is fixedly connected with first pontoon;Female flange is fixedly connected with second pontoon;Male flange is matched with female flange, and is connected by bolt;Exhaust bolt is installed at female flange bottom end;The utility model can realize accurate positioning by the structure that recessed groove of female flange in inner sleeve and head plate and female flange in outer sleeve and head end plate is sleeved, cooperate high-strength bolt pre-tightening to form rigid joint, significantly improve the overall bending, shear and fatigue resistance of splicing hull;And inner sleeve and the outer sleeve of female flange are closely contacted, bolt stress can be reduced, prevent bolt from appearing loosening and fatigue excessive fracture in operation process;Sealing rubber strip and exhaust bolt are cooperatively designed, ensure watertightness and contact rigidity.

Description

Technical Field

[0001] This utility model relates to the field of ship hull connection technology, specifically to a floating box connection device for assembling modular engineering vessels. Background Technology

[0002] my country's rivers and waterways are interconnected, with varying bridge, dam, and navigation standards, making it impossible for vessels to tow goods across different river systems. To meet the needs of emergency construction in multiple river basins, container-type modular engineering vessels have been developed in recent years. These vessels can be transported by road as needed for construction and relocated to different locations. To accommodate road transport, these container-type engineering vessels must be divided into multiple pontoons, transported to their destination by road, and then assembled at the construction site. However, during operation, these vessels are subjected to complex multi-directional forces such as surges, rotation, hoisting, and dynamic loads on equipment. The connection nodes must simultaneously bear tensile, compressive, shear, torsional, and fatigue cyclic loads. Existing pontoon connections often use simple flat flanges or single-row bolt structures, resulting in insufficient strength and improper arrangement of the connection devices. After prolonged use, these connections may experience fatigue damage, bolt loosening and breakage, weld cracking and water seepage, and even disintegration between pontoons, leading to sudden capsizing, equipment falling into the water, and significant economic losses. Utility Model Content

[0003] The purpose of this utility model is to provide a pontoon connection device for assembling modular engineering vessels that is precise in positioning, fatigue-resistant and load-reducing, and convenient and quick to assemble, so as to solve the technical problems of existing connection devices being prone to fatigue damage, bolt loosening and breakage, weld water seepage, and low assembly efficiency leading to ship disintegration accidents under complex stress conditions.

[0004] To solve the above technical problems, the solution adopted by this utility model is as follows: A pontoon connection device for assembling modular engineering vessels, used to connect several pontoons, includes a male flange, a female flange, bolts, and vent bolts; the pontoons are of two types, namely a first pontoon and a second pontoon; the male flange and the female flange are provided with matching grooves; the male flange is fixedly connected to the first pontoon; the female flange is fixedly connected to the second pontoon; the male flange and the female flange are matched and connected by the bolts; the vent bolts are installed at the bottom end of the female flange.

[0005] Both the first and second pontoons are equipped with male and female flanges on all four sides. The first pontoon has male flanges on both the left and right sides and female flanges on both the top and bottom sides. The second pontoon has female flanges on both the left and right sides and male flanges on both the top and bottom sides. The male flange on the left side of the first pontoon is connected to the female flange on the right side of the second pontoon, and the male flange on the right side is connected to the female flange of another second pontoon. The female flanges on the top and bottom sides are connected to the male flanges of another second pontoon, and so on.

[0006] During hull assembly, all pontoons are arranged in the order of first pontoon followed by second pontoons around it, so that the groove of the male flange is placed in contact with the groove of the female flange, forming a structure where the male flange fits inside the female flange. This is used for positioning, and then the male flange is fixed to the female flange with bolts for connection. The male and female flanges, pressed together, form a rigid, integral connection node through their interlocking groove structure and strong bolt preload, firmly connecting adjacent pontoons into one unit. All pontoons are connected into a whole through the male and female flanges. When there is air inside the connection between the male and female flanges, the vent bolts can be rotated and loosened to release the air, preventing excessive internal pressure and ensuring a complete seal between the flange faces, eliminating air pockets or water sacs, thereby ensuring the sealing and contact rigidity of the connection surface.

[0007] Furthermore, the male flange includes a flange plate A, an inner sleeve, and a head plate; the groove of the male flange is formed by the inner sleeve and the head plate; the first pontoon is fixedly connected to the flange plate; the flange plate A has several bolt holes; the outer top end of the inner sleeve is fixedly connected to the flange plate, and the bottom end is fixedly connected to the head plate. The flange plate A serves as the base bearing plate and is fixedly welded to the first pontoon. The inner sleeve is cylindrical, with its outer top end welded to the flange plate A, and its bottom end extending downwards and welded to the head plate for sealing, forming a closed cavity-like groove. This facilitates insertion into the groove of the female flange for positioning. The cylindrical structure of the inner sleeve, in contact with the groove of the female flange, effectively increases the axial compressive strength of the male flange, thereby effectively preventing flange plate deformation during bolt pre-tightening.

[0008] Furthermore, the female flange includes flange plate B, outer sleeve, and end plate; the groove of the female flange is formed by the outer sleeve and end plate; the second float is fixedly connected to flange plate B; the top end of the outer sleeve is fixedly connected to flange plate B, and the bottom end is fixedly connected to end plate; the outer sleeve matches the inner sleeve; flange plate B has an opening that matches the bolt holes; the vent bolt is installed in the middle of end plate. The outer sleeve and flange plate B are welded to form an annular outer cylinder, and the end plate is welded to close the bottom of the outer sleeve, together forming the groove cavity of the female flange. The groove formed by the inner sleeve and end plate of the male flange is placed in the groove cavity of the female flange for constraint and positioning, resisting lateral displacement. The vent bolt is located at the lowest point in the middle of the end plate. When loosened, it can discharge air or liquid from the groove cavity, making the male flange and female flange tightly connected. The bolt connects flange plate A and flange plate B together through bolt holes and openings.

[0009] Furthermore, flange plate B has a sealing strip at its top; flange plate A has a sealing groove at its bottom that matches the sealing strip. When flange plate A is connected to flange plate B, the sealing strip at the top of flange plate B is pressed into the sealing groove at the bottom of flange plate A. When flange plate A and flange plate B are connected together by bolts, pressure is generated, causing the sealing strip to elastically deform and fill the micro-gaps in the sealing groove, forming a seal. This effectively prevents gas or water from entering the connection between the male and female flanges from the connection surface.

[0010] The working principle of this utility model is as follows: During hull assembly, all pontoons are arranged in the order of first pontoon surrounding second pontoons. The groove in the male flange (composed of the inner sleeve and end plate) is placed within the groove in the female flange (composed of the outer sleeve and end plate), creating a male flange fitted inside the female flange for positioning and to resist lateral displacement. Bolts are then tightened to secure the male flange to the female flange. Simultaneously, the sealing strip at the top of flange plate B is pressed into the sealing groove at the bottom of flange plate A, preventing gas or water from entering the connection between the male and female flanges. The pressed-together male and female flanges, through their interlocking groove structure and strong bolt preload, form a rigid, integral connection node, firmly connecting adjacent pontoons. All pontoons are connected as a whole via the male and female flanges. When air is present at the connection between the male and female flanges, the vent bolts can be loosened by rotating to release the air, preventing excessive internal pressure and ensuring a tight seal between the flange faces, eliminating cavitation or water pockets, thus guaranteeing the sealing and contact rigidity of the connection surface.

[0011] The beneficial effects of this utility model are as follows: This invention achieves precise positioning through a grooved connection between the inner sleeve and end plate in the male flange and the outer sleeve and end plate in the female flange. Combined with high-strength bolt pre-tightening to form a rigid node, this significantly improves the overall bending, shear, and fatigue resistance of the assembled hull. Furthermore, the tight contact between the inner sleeve and the outer sleeve of the female flange reduces bolt stress, preventing loosening and excessive fatigue fracture during operation. The coordinated design of the sealing strip and venting bolts not only completely eliminates the risk of air pockets and water sacs at the connection surface, ensuring watertightness and contact rigidity, but also facilitates the overall assembly of the hull. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic cross-sectional view of the connection between the male flange and the female flange of this utility model. Figure 3 This is a schematic diagram of the main structure of the male flange of this utility model; Figure 4This is a side view sectional structural diagram of the male flange of this utility model; Figure 5 This is a schematic diagram of the main flange structure of this utility model; Figure 6 This is a side view sectional structural diagram of the mother flange of this utility model.

[0013] In the diagram: 1. Male flange; 1-1. Flange plate A; 1-2. Inner sleeve; 1-3. Head plate; 2. Female flange; 2-1. Flange plate; 2-2. Outer sleeve; 2-3. Head end plate; 3. Sealing strip; 4. Bolt; 5. Vent bolt; 6. First pontoon; 7. Second pontoon. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0016] The following is a detailed description of the pontoon connecting device for assembled box-type engineering vessels, with reference to the accompanying drawings: Example

[0017] A pontoon connection device for assembling modular engineering vessels, used to connect several pontoons, includes a male flange 1, a female flange 2, bolts 4, and vent bolts 5; the pontoons are of two types, namely a first pontoon 6 and a second pontoon 7; the male flange 1 is fixedly connected to the first pontoon 6; the female flange 2 is fixedly connected to the second pontoon 7; the male flange 1 and the female flange 2 are matched and connected by the bolts 4; the vent bolts 5 are installed at the bottom end of the female flange 2.

[0018] The working principle of this embodiment is as follows: During hull assembly, all pontoons are arranged in the order of first pontoon 6 surrounding second pontoons 7, so that the groove of the male flange 1 is placed in contact with the groove of the female flange 2, forming a structure in which the male flange 1 fits inside the female flange 2 for positioning. Then, the male flange 1 is fixed to the female flange 2 with bolts 4 for connection. The male and female flanges pressed together form a rigid, integral connection node through their interlocking groove structure and strong bolt preload, firmly connecting the two adjacent pontoons into one. When there is air inside the connection between the male flange 1 and the female flange 2, the vent bolt 6 can be rotated and loosened to release the air, which can prevent excessive internal pressure and ensure that the flange surfaces are completely sealed, eliminating air pockets or water sacs, thereby ensuring the sealing and contact rigidity of the connection surface. Example

[0019] The difference from Embodiment 1 is that the male flange 1 includes a flange plate A1-1, an inner sleeve 1-2, and a head plate 1-3; the first float 6 is fixedly connected to the flange plate 1-1; the flange plate A1-1 has a plurality of bolt holes; the outer top of the inner sleeve 1-2 is fixedly connected to the flange plate 1-1, and the bottom end is fixedly connected to the head plate 1-3; the female flange 2 includes a flange plate B2-1, an outer sleeve 2-2, and a head plate 2-3; the flange plate B2-1 has openings that match the bolt holes; the second float 7 is fixedly connected to the flange plate B2-1; the top of the outer sleeve 2-2 is fixedly connected to the flange plate B2-1, and the bottom end is fixedly connected to the head plate 2-3; the outer sleeve 2-2 matches the inner sleeve 1-2; the vent bolt 5 is installed in the middle of the head plate 2-3; the top of the flange plate B2-1 is provided with a sealing strip 3; the bottom of the flange plate A1-1 is provided with a sealing groove that matches the sealing strip 3. Flange plate A1-1 serves as the base bearing plate and is welded to the first pontoon 6. The inner sleeve 1-2 is cylindrical, with its top outer side welded to flange plate A1-1, and its bottom extending downwards and welded to the end cap 1-3 for sealing, forming a closed cavity-like groove. This facilitates insertion into the groove formed by the outer sleeve 2-2 and flange plate B2-3 within the female flange 2, providing constraint and positioning to resist lateral displacement. Furthermore, it effectively increases the axial compressive strength of both the male flange 1 and the female flange 2, thereby effectively preventing damage to flange plate A1-1 and the female flange 2 during bolt pre-tightening. When flange plate B2-1 deforms, the vent bolt 5 is located at the lowest point in the middle of end plate 2-3. By rotating and loosening it, air or liquid in the groove cavity can be discharged, which can make the male flange 1 and female flange 2 tightly connected. When bolt 4 connects flange plate A1-1 and flange plate B2-1 together through bolt holes and openings, the sealing strip 3 at the top of flange plate B2-1 will be pressed into the sealing groove at the bottom of flange plate A1-1 to form a seal, which can effectively prevent gas or water from entering the connection interior of male flange 1 and female flange 2 from the connection surface.

[0020] The working principle of this embodiment is the same as that of Embodiment 1.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pontoon connecting device for assembling modular engineering vessels, used to connect several pontoons, characterized in that: Includes a male flange (1), a female flange (2), bolts (4), and vent bolts (5); the pontoon is provided in two types, namely a first pontoon (6) and a second pontoon (7); the male flange (1) and the female flange (2) are provided with matching grooves; the male flange (1) is fixedly connected to the first pontoon (6); the female flange (2) is fixedly connected to the second pontoon (7); the male flange (1) matches the female flange (2) and is connected by the bolts (4); the vent bolts (5) are installed at the bottom end of the female flange (2).

2. The pontoon connection device for a modular engineering vessel with assembled hulls according to claim 1, characterized in that: The male flange (1) includes a flange plate A (1-1), an inner sleeve (1-2), and a head plate (1-3); the groove of the male flange (1) is composed of the inner sleeve (1-2) and the head plate (1-3); the first float box (6) is fixedly connected to the flange plate A (1-1); the flange plate A (1-1) has several bolt holes; the outer top of the inner sleeve (1-2) is fixedly connected to the flange plate A (1-1), and the bottom end is fixedly connected to the head plate (1-3).

3. A pontoon connection device for a modular engineering vessel with assembled hulls according to claim 2, characterized in that: The mother flange (2) includes a flange plate B (2-1), an outer sleeve (2-2), and a head end plate (2-3); the groove of the mother flange (2) is composed of the outer sleeve (2-2) and the head end plate (2-3); the flange plate B (2-1) has an opening that matches the bolt hole; the second float box (7) is fixedly connected to the flange plate B (2-1); the top end of the outer sleeve (2-2) is fixedly connected to the flange plate B (2-1), and the bottom end is fixedly connected to the head end plate (2-3); the outer sleeve (2-2) matches the inner sleeve (1-2); the vent bolt (5) is installed in the middle of the head end plate (2-3).

4. A pontoon connection device for a modular engineering vessel with assembled hulls according to claim 3, characterized in that: The flange plate B (2-1) is provided with a sealing strip (3) at its top end; the flange plate A (1-1) is provided with a sealing groove at its bottom end that matches the sealing strip (3).

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