Square tube bolt connecting structure of modular buoyancy tank for water surface operation
By designing sinking grooves and connecting plates on the pontoon box body, and using square tube pins and cap threaded connections, the problems of large gaps and uneven stress at the pontoon box connection points are solved, achieving a seamless, safe, stable, and aesthetically pleasing pontoon box connection structure.
Patent Information
- Application Number
- CN202520780473.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-23
AI Technical Summary
The existing floating boxes have large gaps at the joints, and the protruding structure at the joints affects the aesthetics and poses a safety hazard. The uneven stress on the floating boxes causes them to sway, and the splicing efficiency is low.
It adopts a rectangular floating box design, with a sinking groove and connecting plate, and is fixedly connected by square tube pins and cap threads. The pin cone design enhances stability.
Seamless splicing was achieved, which improved safety and stability, reduced construction risks, increased installation efficiency, and ensured the stability and aesthetics of the operation.
Smart Images

Figure CN223894672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a modular floating box connection structure for surface operations, and particularly to a square tube pin connection structure for a modular floating box for surface operations. Background Technology
[0002] Currently manufactured floating pontoons in China suffer from several drawbacks. Large gaps exist between the connected pontoons, and the protruding structures at the joints extend beyond the pontoon's surface. These gaps are aesthetically unappealing and hinder personnel movement (potential tripping hazards) and vehicle movement (potential jamming hazards), posing significant safety risks. Furthermore, the assembly efficiency of the pontoons is low. Due to the gaps between the pontoons, the overall force distribution is uneven when subjected to buoyancy, tension, and gravity from the surrounding water surface, resulting in unstable swaying and poor stability. These defects can be seen in my country's utility model patent, patent number 202420399489.3, entitled "Assembled Floating Pontoon Mobile Construction Platform," where the attached drawings clearly show large gaps between the pontoons. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a square tube pin connection structure for a modular floating box for surface operations, addressing the shortcomings of existing technologies.
[0004] To achieve the above objectives, the present invention adopts the following measures:
[0005] A square tube pin connection structure for a modular floating pontoon for surface operations includes a pontoon body and a square tube pin. The pontoon body is rectangular. Each pair of adjacent sides of the pontoon body has a sinking groove on its upper and lower edges. On the other pair of adjacent sides, the longer side has a first connecting plate extending outwards from its upper and lower edges, which is embedded in the sinking groove. The shorter side has a second connecting plate extending outwards from its upper and lower edges, which is also embedded in the sinking groove. A first square tube pin hole extends vertically through the sinking groove. The first and second connecting plates... Each pontoon box is provided with a second square tube pin hole corresponding to the position of the first square tube pin hole. When the longer side of two adjacent pontoon boxes is close together, the first connecting plate is embedded in the sinking groove on the longer side of the adjacent pontoon box, and the square tube pin passes through the second square tube pin hole and the first square tube pin hole to connect the two pontoon boxes together. When the shorter side of two adjacent pontoon boxes is close together, the second connecting plate is embedded in the sinking groove on the shorter side of the adjacent pontoon box, and the square tube pin passes through the second square tube pin hole and the first square tube pin hole to connect the two pontoon boxes together.
[0006] The top of the square tube pin is welded with a cap, and the cap has a cap through hole. The first connecting plate and the second connecting plate both have connecting plate thread holes corresponding to the cap through hole. The screw passes through the cap through hole and the connecting plate thread hole to fix the square tube pin to the float box body.
[0007] The lower part of the square tube pin is welded with a pin cone, and the cross-section of the pin cone has a cross-shaped structure.
[0008] The beneficial effects of this utility model are: practicality, novel structure, the float box structure and the pin structure have the characteristics of safety, stability, beauty, practicality and high installation efficiency, the water surface waves do not affect the workers' work, multiple float boxes can be connected, and the float boxes can be seamlessly spliced together. Attached Figure Description
[0009] Figure 1 This is an exploded structural diagram of the present invention.
[0010] Figure 2 This is a partially exploded structural diagram of the square tube pin installation of this utility model.
[0011] Figure 3 This is a schematic diagram of the upper structure of this utility model.
[0012] Figure 4 This is a schematic diagram of the lower structure of this utility model. Detailed Implementation
[0013] A square tube pin connection structure for a modular floating pontoon for surface operations includes a pontoon body 1 and a square tube pin 2. The pontoon body 1 has a rectangular structure. On the upper and lower edges of two adjacent sides of the pontoon body 1, there are sinking grooves 101. On the other pair of adjacent sides, the upper and lower edges of the longer side have first connecting plates 102 that are embedded in the sinking grooves 101 and extend outwards. The upper and lower edges of the shorter side have second connecting plates 105 that are embedded in the sinking grooves 101 and extend outwards. A first square tube pin hole 103 is formed in the sinking groove 101, and both the first connecting plate 102 and the second connecting plate 105 have... When two adjacent pontoon boxes 1 are closely connected on their longer sides, the first connecting plate 102 is embedded in the recessed groove 101 on the longer side of the adjacent pontoon box 1, and the square tube pin 2 passes through the second square tube pin hole 104 and the first square tube pin hole 103 to connect the two pontoon boxes 1 together; when two adjacent pontoon boxes 1 are closely connected on their shorter sides, the second connecting plate 105 is embedded in the recessed groove 101 on the shorter side of the adjacent pontoon box 1, and the square tube pin 2 passes through the second square tube pin hole 104 and the first square tube pin hole 103 to connect the two pontoon boxes 1 together.
[0014] The top of the square tube pin 2 is welded with a cap 201, and a cap through hole 202 is provided on the cap 201. The first connecting plate 102 and the second connecting plate 105 are both provided with connecting plate threaded holes 106 corresponding to the position of the cap through hole 202. The screw passes through the cap through hole 202 and the connecting plate threaded hole 106 to fix the square tube pin 2 to the float box body 1.
[0015] The lower part of the square tube pin 2 is welded with a pin cone 203, and the cross-section of the pin cone 203 is a cross-shaped structure.
[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two adjacent float boxes 1 are connected as follows: When the longer sides of two adjacent float boxes 1 are close together, the first connecting plate 102 is embedded in the recessed groove 101 on the longer side of the adjacent float box 1, the holes of the first square tube pin hole 103 and the second square tube pin hole 104 are aligned, and the square tube pin 2 passes through the second square tube pin hole 104 and the first square tube pin hole 103 to connect the two float boxes 1 together; when the shorter sides of two adjacent float boxes 1 are close together, the second connecting plate 105 is embedded in the recessed groove 101 on the shorter side of the adjacent float box 1, the holes of the first square tube pin hole 103 and the second square tube pin hole 104 are aligned, and the square tube pin 2 passes through the second square tube pin hole 104 and the first square tube pin hole 103 to connect the two float boxes 1 together. The float boxes 1 of this application can be connected infinitely in all directions, and the user can choose the number of float boxes 1 according to actual needs. It reduces safety hazards during construction and walking, avoids gaps, and prevents personal injury caused by personnel walking on it. It reliably and effectively achieves safe construction operations and facilitates personnel movement and construction. During construction operations, it saves time and greatly improves assembly efficiency. Multiple floating box bodies 1 can be spliced together, and the number of floating box bodies 1 can be increased or decreased according to actual working conditions, maximizing the flexible use of floating box bodies 1.
[0017] When the cap 201 is welded to the square tube pin 2, a square hole with a cross-sectional shape and size similar to that of the square tube pin 2 is opened in the middle of the cap 201. The square tube pin 2 is welded into the square hole, and the top of the square tube pin 2 is slightly higher than the outer plane of the cap 201.
[0018] When the first connecting plate 102 and the second connecting plate 105 are installed, they will be lower than the surface of the floating box body 1 by a certain height. This ensures that when the cap 201 is pressed on the first connecting plate 102 or the second connecting plate 105, the upper end of the square tube pin 2 protruding in the middle of the cap 201 is flush with the surface of the floating box body 1. This prevents workers from tripping or construction vehicles from driving on the floating box body 1 and ensures safety during walking and construction.
[0019] The pin cone 203 at the bottom of the square tube pin 2 extends slightly beyond the bottom plane of the float box 1.
Claims
1. A square tube pin connection structure for a modular floating hull for surface operations, comprising a hull body (1) and a square tube pin (2), characterized in that: The float box body (1) has a rectangular structure. On the upper and lower edges of two adjacent sides of the float box body (1), there are sinking grooves (101). On the other pair of adjacent sides, the upper and lower edges of the longer side are provided with a first connecting plate (102) that is embedded in the sinking groove (101) and extends outward. The upper and lower edges of the shorter side are provided with a second connecting plate (105) that is embedded in the sinking groove (101) and extends outward. A first square tube pin hole (103) is provided in the sinking groove (101) and extends through the sinking groove (103). A second square tube pin is provided on the first connecting plate (102) and the second connecting plate (105) corresponding to the position of the first square tube pin hole (103). When the longer side of two adjacent pontoon boxes (1) is close together, the first connecting plate (102) is embedded in the sinking groove (101) on the longer side of the adjacent pontoon box (1), and the square tube pin (2) passes through the second square tube pin hole (104) and the first square tube pin hole (103) to connect the two pontoon boxes (1) together; when the shorter side of two adjacent pontoon boxes (1) is close together, the second connecting plate (105) is embedded in the sinking groove (101) on the shorter side of the adjacent pontoon box (1), and the square tube pin (2) passes through the second square tube pin hole (104) and the first square tube pin hole (103) to connect the two pontoon boxes (1) together.
2. The square tube pin connection structure of a modular floating box for surface operations according to claim 1, characterized in that: The top of the square tube pin (2) is welded with a cap (201), and a cap through hole (202) is provided on the cap (201). The first connecting plate (102) and the second connecting plate (105) are both provided with connecting plate thread holes (106) corresponding to the position of the cap through hole (202). The screw passes through the cap through hole (202) and the connecting plate thread hole (106) to fix the square tube pin (2) on the float box body (1).
3. The square tube pin connection structure of a modular floating box for surface operations according to claim 1, characterized in that: The lower part of the square tube pin (2) is welded with a pin cone (203), and the cross section of the pin cone (203) is a cross-shaped structure.
Citation Information
Patent Citations
Assembled floating box water mobile construction platform
CN221457936U