Vertical limit device for docking of offshore floating structures

Abstract

The invention discloses a vertical limit device for docking an offshore floating structure, which comprises a base, a pressure plate, a first ear plate and a second ear plate; the base is fixedly arranged on the first floating body; the base comprises a top plate; a lower belly plate is fixedly arranged on the lower edge of the pressure plate; the lower edge of the pressure plate comprises a mounting section, a transition section, a load-bearing section and a guide section connected in sequence; the mounting section and the load-bearing section are both horizontally distributed, and the guide section is obliquely distributed upward; the lower belly plate on the mounting section is located above the top plate of the base; the lower belly plate on the load-bearing section is overlapped on the second floating body; the lower belly plate and the base are connected by a detachable fastener; the lower end of the first ear plate is fixedly connected to the base; the upper end of the first ear plate is connected to the second ear plate by a rotating shaft; the second ear plate is fixedly connected to the pressure plate. The invention meets the requirements for precision during docking at sea, has a simple structure, low cost, easy operation, good safety, convenient and quick disassembly and assembly, high maintainability, and can quickly and efficiently make the floating body meet the docking requirements.

Description

Technical Field

[0001] The invention relates to the technical field of marine equipment, and in particular to a vertical limiting device for docking an offshore floating structure. Background Art

[0002] At present, floating structures at sea are mostly transported by lifting or flexible supply equipment after docking and docking. Due to the harsh wind and wave environment at sea, it is very easy to collide and dislocate when docking floating structures at sea, which is not conducive to the transfer operation and is prone to dangerous situations. In addition, this method has low efficiency in material transfer.

[0003] For the modular assembly of offshore floating bodies, it is not easy to improve the docking accuracy of the floating body modules if only the mooring method is used. It has strict requirements on the assembly construction and connection work. If the vertical mooring limit is added, the cost will be too high.

[0004] With the modularization and intelligent development of floating structures such as ships, offshore ranches and marine engineering, the demand for multi-module docking is increasing.

[0005] At present, the application of limit devices is mostly concentrated in the fields of mechanical equipment, bridges and machining. There is no vertical limit device with large load-bearing capacity in marine engineering. Nowadays, floating structures are docked or moored with gaps for transfer. Due to the height difference between the floating bodies, the transfer efficiency is low. At the same time, due to the existence of gaps, if there is no vertical limit device, there is movement space between the floating modules, which may lead to the problem of insufficient docking accuracy of the floating modules. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a vertical limit device for docking an offshore floating structure.

[0007] The present invention solves the above technical problems through the following technical solutions:

[0008] A vertical limit device for docking an offshore floating structure, which is arranged between a first floating body and a second floating body; it comprises a base, a pressure plate, a first ear plate and a second ear plate; the base is fixedly arranged on the first floating body; the base comprises a horizontally distributed top plate; the pressure plate is vertically distributed, and a lower belly plate is fixedly arranged on the lower edge of the pressure plate; the lower edge of the pressure plate comprises a mounting section, a transition section, a load-bearing section and a guide section connected in sequence; the mounting section and the load-bearing section are both horizontally distributed, the transition section is obliquely distributed downward, and the guide section is obliquely distributed upward; the lower belly plate on the mounting section is located above the top plate of the base; the lower belly plate on the load-bearing section overlaps the second floating body; the lower belly plate and the base are connected by a detachable fastener; the vertical distance between the mounting section and the load-bearing section is the same as the height of the base; the lower end of the first ear plate is fixedly connected to the base; the upper end of the first ear plate is connected to the second ear plate by a rotating shaft; the second ear plate is fixedly connected to the pressure plate.

[0009] A limiting shaft is passed through the first ear plate, and the limiting shaft is located above the rotating shaft and outside the second ear plate.

[0010] There are two first ear plates, which are respectively arranged on both sides of the pressing plate; the second ear plate is arranged between the two first ear plates; and the rotating shaft is simultaneously passed through the two first ear plates.

[0011] Both the top plate and the lower belly plate are provided with positioning holes for inserting bolts or positioning pins.

[0012] The fasteners are bolts and nuts. The bolts are inserted through the positioning holes of the top plate and the lower belly plate at the same time, and the nuts are screwed to the bolts.

[0013] The fastener is a gusset plate, which includes an end plate and a panel. There are two panels, both of which are fixed to the end plates. The two panels and the end plates form a U-shaped area for accommodating the lower belly plate and the top plate; the gusset plate clamps the top plate and the lower belly plate in the U-shaped area.

[0014] A positioning pin is inserted into the positioning hole, and the positioning pin is also penetrated through the buckle plate.

[0015] The base also includes a bottom plate distributed vertically, the bottom plate is perpendicular to the top plate; the bottom plate is fixedly connected to the first floating body.

[0016] The first ear plate is fixedly connected to the bottom plate; the first ear plate and the bottom plate are staggered and arranged, and the first ear plate is provided with a groove for accommodating the bottom plate.

[0017] When the lower belly plate is fixedly connected to the base, the upper surface of the first floating body is flush with the upper surface of the second floating body.

[0018] The beneficial effects of the present invention are as follows: the present invention meets the vertical limit device form that meets the accuracy requirements of offshore docking, and switches between working mode and non-working mode by setting a rotating shaft connection and a bolt or buckle plate locking method. It has a simple structure, low cost, easy operation, good safety, convenient and quick disassembly and assembly, and high maintainability, and can quickly and efficiently enable the floating body to meet the docking requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention in working mode.

[0020] Figure 2 for Figure 1 Center A view.

[0021] Figure 3 for Figure 1 Center B view.

[0022] Figure 4 A schematic diagram of the structure of a preferred embodiment of the present invention in a non-working mode.

[0023] Figure 5 Schematic diagram of the structure of the first ear plate of a preferred embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of a preferred embodiment of the present invention when a buckle plate is used for connection.

[0025] Figure 7 It is a schematic structural diagram of a gusset plate according to a preferred embodiment of the present invention.

[0026] Figure 8 for Figure 7 Center C view. DETAILED DESCRIPTION

[0027] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a vertical limit device for docking an offshore floating structure is arranged between a first floating body 10 and a second floating body 20; it includes a base 30, a pressure plate 40, a first ear plate 21 and a second ear plate 22.

[0029] The base 30 is fixed to the first floating body 10 ; the base 30 includes a horizontally distributed top plate 31 and a vertically distributed bottom plate 32 . The bottom plate 32 is perpendicular to the top plate 31 ; the bottom plate 32 is fixed to the first floating body 10 .

[0030] The first ear plate 21 is fixedly connected to the bottom plate 32. The first ear plate and the bottom plate are staggered, and the first ear plate is provided with a groove 61 for accommodating the bottom plate.

[0031] The pressing plate 40 is distributed vertically, and a lower web 50 is fixedly disposed at the lower edge of the pressing plate 40 .

[0032] The lower edge of the pressure plate 40 includes a mounting section 41, a transition section 42, a load-bearing section 43 and a guide section 44 which are connected in sequence; the mounting section 41 and the load-bearing section 43 are both horizontally distributed, the transition section 42 is obliquely distributed downward, and the guide section 44 is obliquely distributed upward; the lower belly plate on the mounting section 41 is located above the top plate of the base; the lower belly plate on the load-bearing section 43 is overlapped with the second floating body 20.

[0033] The vertical distance between the installation section 41 and the load-bearing section 43 is the same as the height of the base.

[0034] The lower end of the first ear plate 21 is fixed to the base 30 ; the upper end of the first ear plate 21 is connected to the second ear plate 22 via a rotating shaft 23 ; and the second ear plate 22 is fixed to the pressing plate 40 .

[0035] A limiting shaft 24 is disposed on the first ear plate 21 . The limiting shaft 24 is located above the rotating shaft 23 and outside the second ear plate 22 .

[0036] There are two first ear plates 21 , and the two first ear plates 21 are respectively arranged on both sides of the pressing plate 40 . The second ear plate 22 is arranged between the two first ear plates 21 .

[0037] The rotating shaft 23 is simultaneously passed through the two first ear plates 21 .

[0038] The lower belly plate 50 and the base 30 are connected by a detachable fastener. The top plate 31 and the lower belly plate 50 are both provided with positioning holes 60 for inserting bolts or positioning pins.

[0039] Fasteners can take a variety of forms.

[0040] The fasteners may be bolts (not shown in the figure) and nuts (not shown in the figure), the bolts are passed through the positioning holes 60 of the top plate 31 and the lower belly plate 50 at the same time, and the nuts are screwed to the bolts.

[0041] The fastener can be a gusset plate 70, which includes an end plate 71 and a panel 72. There are two panels, both of which are fixed to the end plates. The two end plates and the surface form a U-shaped area for accommodating the lower belly plate and the top plate; the gusset plate clamps the top plate and the lower belly plate in the U-shaped area.

[0042] In order to prevent the pinch plate from sliding, a positioning pin (not shown in the figure) is inserted into the positioning hole 60, and the positioning pin 60 is also penetrated through the pinch plate.

[0043] When the lower web 50 and the base 30 are fixedly connected, the upper surface of the first floating body 10 and the upper surface of the second floating body 20 are flush.

[0044] In the present invention, the base is connected to the deck by a bottom plate, the bottom plate is flat steel, its installation causes less damage to the deck structure, and its height is small, so it has no effect on deck traffic and appearance, and the welding workload is small.

[0045] In the present invention, the rotating shaft and the welding position on the first ear plate are designed in a staggered manner. When the vertical limit device is in a non-working mode, the first ear plate will be stuck in the groove for accommodating the bottom plate under the action of the gravity of its end, thereby reducing the requirements of external force on the weld between the first ear plate and the bottom plate. Therefore, the first ear plate only needs to be welded to the bottom plate of the base, and no welding is required between the first ear plate and the deck, which has little impact on the deck.

[0046] The detachable connection method of the gusset plate or bolt can facilitate the disassembly of the vertical limit device. For the vertical limit device, if the positioning hole is fastened with bolts, the equipment used with the vertical limit device is light and the installation method is convenient, but the bolt installation time is relatively time-consuming. If the vertical limit device adopts the gusset plate installation method, it is only necessary to arrange a rubber pad or a wooden wedge in the gusset plate to quickly achieve the tightening purpose. At the same time, a positioning pin is set in the positioning hole to prevent the gusset plate from retreating and overcome the longitudinal shear force of the vertical limit device. When the gusset plate is used, the weight of the vertical limit device equipment is relatively slightly increased.

[0047] The vertical limiting device of the present invention can be arranged on both the butted floating modules to form a situation where the floating modules are pressed against each other, thereby quickly achieving the purpose of vertical limiting.

[0048] When the floating module is in a separated state or the floating body is used alone, the vertical limit device is in a non-working state. It is necessary to remove the fastening bolts or fastening buckle plates on the vertical limit device before separation. At this time, the vertical limit device can rotate with the movement of the docking floating body within the limit range. This prevents the vertical limit device from being subjected to excessive force due to the movement of the floating body, thereby causing structural damage to the limit device. In the non-working mode, the shaft can also be disassembled and the pressure plate removed. The non-working mode schematic diagram of the vertical limit device is shown in the figure below. Figure 4 shown.

[0049] When the floating modules are docked, the vertical limit device is in working mode. According to the use requirements, the bolt or clip plate fastening method can be selected. After the bolt or clip plate is installed, when the floating body approaches, due to the existence of the guide section of the vertical limit device, the floating body can be gradually compressed when the distance between the two floating modules is gradually reduced, while allowing the floating body to have a certain amount of heave and sink. If vertical limit devices are arranged on both docked floating modules, the mutual pressure of the two floating limit devices can be used to achieve the purpose of nearly synchronous movement of the two floating bodies at sea, meet the conditions for transshipment or docking, and provide the prerequisite for high-precision connection of the floating modules. The schematic diagram of the working mode of the vertical limit device is shown in the figure. Figure 1 and Figure 6 The working state when bolt connection is adopted is as follows. Figure 1 As shown, the Figure 1 The bolts are not shown.

[0050] The present invention adopts an I-beam, and is provided with a guide section, a load-bearing section and an installation section. A rotating shaft connection is arranged at the end, and a bolt or a buckle plate locking method is arranged at the installation section. The disassembly and assembly of the bolts and the buckle plates are used to realize the switching of the working mode and the non-working mode of the vertical limit device; in the non-working mode, the vertical limit device can move freely within the limiting range; in the working mode, when the draft difference and the sea condition level of the two floating modules are within the use range of the vertical limit device, the vertical limit device is quickly locked by bolts or buckle plates, and the two floating modules are pulled closer. As the distance decreases, the pressure provided by the vertical limit device gradually increases, and the purpose of vertical limitation when the floating structures are docked is realized by the mutual pressure of the docking floats.

[0051] The vertical limit device of the present invention meets the precision requirements of offshore docking. By setting a rotating shaft connection and a bolt or a buckle plate locking method, the working mode and the non-working mode are switched. The structure is simple, the cost is low, the operation is easy and the safety is good. The disassembly and assembly are convenient and quick, and the maintainability is high. The floating body can quickly and efficiently meet the docking requirements.

[0052] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A vertical limit device for docking an offshore floating structure, which is arranged between a first floating body and a second floating body; It is characterized in that The invention comprises a base, a pressure plate, a first ear plate and a second ear plate; the base is fixed on the first floating body; the base comprises a horizontally distributed top plate; the pressure plate is vertically distributed, and a lower belly plate is fixed on the lower edge of the pressure plate; the lower edge of the pressure plate comprises a mounting section, a transition section, a load-bearing section and a guide section connected in sequence; the mounting section and the load-bearing section are both horizontally distributed, the transition section is obliquely distributed downward, and the guide section is obliquely distributed upward; the lower belly plate on the mounting section is located above the top plate of the base; the lower belly plate on the load-bearing section is overlapped on the second floating body; the lower belly plate and the base are connected by a detachable fastener; the vertical distance between the mounting section and the load-bearing section is the same as the height of the base; the lower end of the first ear plate is fixed to the base; the upper end of the first ear plate is connected to the second ear plate by a rotating shaft; the second ear plate is fixed to the pressure plate; a limiting shaft is passed through the first ear plate, and the limiting shaft is located above the rotating shaft and on the outside of the second ear plate; positioning holes for inserting bolts or positioning pins are provided on the top plate and the lower belly plate.

2. The vertical limit device for docking an offshore floating structure according to claim 1, It is characterized in that There are two first ear plates, which are respectively arranged on both sides of the pressing plate; the second ear plate is arranged between the two first ear plates; and the rotating shaft is simultaneously passed through the two first ear plates.

3. The vertical limit device for docking an offshore floating structure according to claim 1, It is characterized in that The fasteners are bolts and nuts. The bolts are inserted through the positioning holes of the top plate and the lower belly plate at the same time, and the nuts are screwed to the bolts.

4. The vertical stopper device for docking an offshore floating structure according to claim 1, It is characterized in that The fastener is a gusset plate, which includes an end plate and a panel. There are two panels, both of which are fixed to the end plates. The two panels and the end plates form a U-shaped area for accommodating the lower belly plate and the top plate; the gusset plate clamps the top plate and the lower belly plate in the U-shaped area.

5. The vertical stopper device for docking an offshore floating structure according to claim 4, It is characterized in that A positioning pin is inserted into the positioning hole, and the positioning pin is also penetrated through the buckle plate.

6. The vertical stopper device for docking an offshore floating structure according to claim 1, It is characterized in that The base also includes a bottom plate distributed vertically, the bottom plate is perpendicular to the top plate; the bottom plate is fixedly connected to the first floating body.

7. The vertical stopper device for docking an offshore floating structure according to claim 6, It is characterized in that The first ear plate is fixedly connected to the bottom plate; the first ear plate and the bottom plate are staggered and arranged, and the first ear plate is provided with a groove for accommodating the bottom plate.

8. The vertical stopper device for docking an offshore floating structure according to claim 1, It is characterized in that When the lower belly plate is fixedly connected to the base, the upper surface of the first floating body is flush with the upper surface of the second floating body.

Images