Underwater vehicle and flexible platform connecting structure and manufacturing method thereof

Abstract

The invention discloses an underwater vehicle, a flexible platform connecting structure of the underwater vehicle and a manufacturing method of the flexible platform connecting structure. The flexible platform connecting structure of the underwater vehicle comprises a rigid platform plate, an upper arc-shaped plate and a flexible supporting structure, the flexible supporting structure comprises a supporting plate and an elastic plate, an open groove is formed in the bottom end face of the rigid platform plate, and the bottom end of the upper arc-shaped plate is fixedly connected with the side edge of the top end face of the rigid platform plate; the top end of the upper arc-shaped plate is fixedly connected with a shell plate of the pressure-resistant ship body, the supporting plate is contained in the open groove and arranged with the bottom wall of the open groove in a spaced mode, the end of the supporting plate is fixedly connected with the shell plate of the pressure-resistant ship body, the two side walls of the supporting plate extend outwards to form a plurality of elastic plates, and the ends of the elastic plates are fixedly connected with the side wall of the open groove of the rigid platform plate. The flexible platform connecting structure can adapt to contraction deformation of a pressure-resistant hull structure and cannot generate structural noise.

Description

Technical Field

[0001] The present invention relates to the field of ship structure design and the technical field of underwater vehicle structure design, and in particular to an underwater vehicle and a flexible platform connection structure and a manufacturing method thereof. Background Art

[0002] In order to meet the needs of equipment layout and personnel work and life, underwater vehicles are generally equipped with a platform structure with a large lateral span and high rigidity requirements.

[0003] However, the pressure-resistant hull structure of the underwater vehicle will shrink and deform under the action of the external deep water pressure, thereby squeezing the platform structure in the cabin. If the platform is rigidly connected to the pressure-resistant hull structure, the platform may be squeezed and deformed, which will have an adverse effect on the safety of the platform structure. The current platform structure adopts a relatively slidable connection type. The platform is connected to the pressure-resistant hull through a base. The base and the platform structure can slide relatively to adapt to the deformation of the pressure-resistant hull structure. This type of structure will cause sliding restriction when the bolt preload is too large or rust occurs. After the sliding is restricted, the platform deformation will make a sound and even cause damage to the platform, which is not conducive to the concealment of the vehicle. It can be seen that the current internal platform structure type of underwater vehicles has many disadvantages. Summary of the invention

[0004] The main purpose of the present invention is to provide an underwater vehicle and a flexible platform connection structure thereof, which are intended to be able to adapt to the shrinkage deformation of the pressure-resistant hull structure without generating structural noise.

[0005] To achieve the above object, the present invention provides a flexible platform connection structure for an underwater vehicle, comprising a rigid platform plate, an upper arc plate and a flexible support structure, wherein: The flexible support structure includes a support plate and an elastic plate. A groove is formed on the bottom end surface of the rigid platform plate. The bottom end of the upper arc plate is fixedly connected to the side edge of the top end surface of the rigid platform plate. The top end of the upper arc plate is fixedly connected to the shell plate of the pressure-resistant hull. The support plate is accommodated in the groove and a gap is set with the bottom wall of the groove. The end of the support plate is fixedly connected to the shell plate of the pressure-resistant hull. Both side walls of the support plate extend outward with multiple elastic plates, and the ends of the elastic plates are fixedly connected to the grooved side walls of the rigid platform plate.

[0006] Preferably, the rigid platform plate includes a platform plate, a cross beam located below the platform plate and welded thereto, an end longitudinal beam and U-shaped stiffeners, the groove enclosed by the U-shaped stiffeners is an open groove, the two ends of the cross beam are connected to the middle parts of the two U-shaped stiffeners, the two ends of the end longitudinal beam are connected to the ends of the two U-shaped stiffeners, and the open side of the U-shaped stiffener is arranged toward the shell plate of the pressure-resistant hull.

[0007] Preferably, the support plate includes a toggle plate upper panel and a toggle plate lower panel arranged in parallel, and a toggle plate web connecting the toggle plate upper panel and the toggle plate lower panel, a plurality of elastic plates are fixed on both sides of the toggle plate web, the toggle plate web and the toggle plate upper panel are both welded to the shell plate of the pressure-resistant hull, and the toggle plate upper panel is arranged in parallel with the platform plate and a gap is arranged between the two.

[0008] Preferably, the height of the elastic plate is smaller than the height of the toggle plate web.

[0009] Preferably, a gap is provided between the top end surface of the elastic plate and the upper panel of the toggle plate, and a gap is provided between the bottom end surface of the elastic plate and the lower panel of the toggle plate; and the elastic plate and the web of the toggle plate are welded and connected.

[0010] Preferably, the toggle plate web is vertically arranged to the toggle plate upper panel, the toggle plate web is vertically arranged to the shell plate of the pressure hull, the elastic plate is an arc-shaped plate, and the arc-shaped plates on both sides of the toggle plate web are symmetrically arranged.

[0011] Preferably, the rib height of the pressure hull is H, and the gap width between the end surface of the platform plate and the shell plate of the pressure hull is 0.8H~1.2H.

[0012] Preferably, the rib spacing of the pressure hull is L, the width of the gap between the end surface of the elastic plate away from the shell plate and the slot is 0.1L-0.3L, and the upper arc plate is arched upward.

[0013] The present invention also provides an underwater vehicle, comprising the above-mentioned flexible platform connection structure.

[0014] The present invention further proposes a method for manufacturing the underwater vehicle based on the above, comprising the following steps: Prefabricate the rigid platform plate, the upper curved plate and the flexible supporting structure respectively; Weld and fix the prefabricated flexible support structure to the shell plate of the pressure hull; Hoist the rigid platform plate to the top of the flexible support structure, and weld the end of the elastic plate to the side wall of the groove at the bottom end of the rigid platform plate; The end faces of the upper arc-shaped plate are respectively welded to the shell plate of the pressure-resistant hull and the end faces of the rigid platform plate, thereby fixing the rigid platform plate.

[0015] The flexible platform connection structure proposed by the present invention has a certain gap between the lower surface of the platform plate and the upper panel of the toggle plate, because the slot at the lower end of the rigid platform plate is connected to the support plate only through several elastic plates, and there is no metal friction between the lower surface of the platform plate and the upper panel of the toggle plate. Compared with the rigid platform plate with rigid connection and the rigid platform plate that can slide relatively, the flexible platform connection structure can adapt to the shrinkage deformation of the pressure-resistant hull on the one hand, and simplify the structure on the other hand, and will not generate deformation noise of the rigid platform plate, which can not only ensure the bearing capacity of the rigid platform plate, but also improve the concealment of the aircraft. At the same time, the flexible platform connection structure also has the advantages of simple structure, easy manufacturing, low cost and stable and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the flexible platform connection structure of the underwater vehicle of the present invention; Figure 2 for Figure 1 The cross-sectional structure schematic diagram along the I-I direction is shown; Figure 3 for Figure 1 The schematic cross-sectional structure diagram along the II-II direction is shown; Figure 4 for Figure 3 A schematic diagram of a local enlarged structure; Figure 5 for Figure 3 The cross-sectional structure schematic diagram along direction III-III is shown.

[0017] In the figure, 1-pressure hull structure; 2-rigid platform plate; 3-flexible support structure; 4-shell plate; 5-rib; 6-platform plate; 7-crossbeam web; 8-crossbeam panel; 9-U-shaped stiffener; 10-end longitudinal beam; 11-upper arc plate; 12-toggle web; 13-toggle upper panel; 14-toggle lower panel; 15-elastic plate.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0020] It should be noted that in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] The invention provides a flexible platform connection structure of an underwater vehicle.

[0022] Reference Figures 1 to 5 In this preferred embodiment, a flexible platform connection structure of an underwater vehicle includes a rigid platform plate 2, an upper arc plate 11 and a flexible support structure 3, wherein: The flexible support structure 3 includes a support plate and an elastic plate 15. A groove is formed on the bottom end surface of the rigid platform plate 2. The bottom end of the upper arc plate 11 is fixedly connected to the side edge of the top end surface of the rigid platform plate 2. The top end of the upper arc plate 11 is fixedly connected to the shell plate 4 of the pressure-resistant hull. The support plate is accommodated in the groove and a gap is set with the bottom wall of the groove. The end of the support plate is fixedly connected to the shell plate 4 of the pressure-resistant hull. Both side walls of the support plate are provided with multiple elastic plates 15 extending outward, and the ends of the elastic plates 15 are fixedly connected to the grooved side walls of the rigid platform plate 2.

[0023] Specifically, refer to Figure 2 and Figure 3 The present embodiment proposes a specific structure of a rigid platform plate 2: the rigid platform plate 2 includes a platform plate 6, a crossbeam located below the platform plate 6 and welded thereto, an end longitudinal beam 10 and a U-shaped stiffener 9, the groove enclosed by the U-shaped stiffener 9 is an open groove, the two ends of the crossbeam are connected to the middle of the two U-shaped stiffeners 9, the two ends of the end longitudinal beam 10 are connected to the ends of the two U-shaped stiffeners 9, and the open side of the U-shaped stiffener 9 is arranged toward the shell plate 4 of the pressure hull. The crossbeam and the end longitudinal beam 10 are arranged vertically. The crossbeam includes a crossbeam web 7 and a crossbeam panel 8, and the crossbeam web 7 is welded to the platform plate 6.

[0024] The lower part of the rigid platform is partially concave (that is, a slotted structure is provided), so that the flexible support structure 3 can be embedded under the platform, and the surface of the platform is flat and continuous.

[0025] Reference Figures 3 to 5This embodiment proposes a specific structure of a support plate: the support plate includes a toggle plate upper panel 13 and a toggle plate lower panel 14 arranged in parallel, and a toggle plate web 12 connecting the toggle plate upper panel 13 and the toggle plate lower panel 14, a plurality of elastic plates 15 are fixed on both sides of the toggle plate web 12, the toggle plate web 12 and the toggle plate upper panel 13 are both welded to the shell plate 4 of the pressure hull, and the toggle plate upper panel 13 is arranged in parallel to the platform plate 6 with a gap between the two.

[0026] Further, refer to Figure 5 The height of the elastic plate 15 is less than the height of the toggle plate web 12. A gap is provided between the top end surface of the elastic plate 15 and the toggle plate upper panel 13, and a gap is provided between the bottom end surface of the elastic plate 15 and the toggle plate lower panel 14; the elastic plate 15 and the toggle plate web 12 are welded and connected.

[0027] Since the height of the elastic plate 15 is smaller than the toggle plate web 12 and there is a certain gap between the upper and lower ends and the toggle plate upper panel 13 and the toggle plate lower panel 14 respectively, the elastic plate 15 can be freely deformed laterally.

[0028] In this embodiment, the bracket web 12 is vertically arranged with the bracket upper panel 13, the bracket web 12 is vertically arranged with the shell plate 4 of the pressure hull, the elastic plate 15 is an arc-shaped plate, and the arc-shaped plates on both sides of the bracket web 12 are symmetrically arranged. In the figure of this embodiment, four elastic plates 15 are arranged on both sides of the bracket web 12 as an example for specific description.

[0029] Further, refer to Figures 2 to 4 The rib height of the pressure hull is H, and the gap width between the end face of the platform plate and the shell plate 4 of the pressure hull is 0.8H~1.2H.

[0030] The rib spacing of the pressure hull is L, the width of the gap between the end surface of the elastic plate 15 away from the shell plate 4 and the slot is 0.1L~0.3L, and the upper arc plate 11 is arched upward. The bearing capacity of the rigid platform plate 2 can be designed by adjusting the material properties, specifications and quantity of the elastic plate 15.

[0031] All components of the flexible platform connection structure are metal structures. The rigid platform plate 2 and the flexible support structure 3 are prefabricated separately, wherein the bracket web 12 is welded with the bracket upper panel 13 and the bracket lower panel 14, then the elastic plate 15 is welded on the bracket web 12, and this part of the structure is welded to the pressure hull 4. After the rigid platform plate 2 is prefabricated as a whole, it is hoisted into the pressure hull, and after being properly assembled, the welding between the elastic plate 15 and the U-shaped stiffener 9 is completed, and finally, the arc plate 11 is welded.

[0032] When the pressure hull structure undergoes radial contraction deformation under the action of deep water pressure, the upper arc plate 11 and the elastic plate 15 will also deform, realizing the function of the rigid platform plate 2 adapting to the deformation of the pressure hull structure. The flexible support structure 3 has a large vertical rigidity to support the vertical load of the rigid platform plate 2, while its lateral rigidity is relatively weak, and can adapt to the contraction deformation from the pressure hull structure; The flexible platform connection structure proposed in this embodiment has a certain gap between the lower surface of the platform plate and the upper panel 13 of the toggle plate, because the slot at the lower end of the rigid platform plate 2 is connected to the support plate only through several elastic plates 15, and there is no metal friction between the lower surface of the platform plate and the upper panel 13 of the toggle plate. Compared with the rigidly connected rigid platform plate 2 and the relatively slidable rigid platform plate 2, the flexible platform connection structure can adapt to the shrinkage deformation of the pressure-resistant hull on the one hand, and simplify the structure on the other hand, and will not generate deformation noise of the rigid platform plate 2, which can not only ensure the bearing capacity of the rigid platform plate 2, but also improve the concealment of the aircraft. At the same time, the flexible platform connection structure also has the advantages of simple structure, easy manufacturing, low cost and stable and reliable structure.

[0033] The present invention further provides an underwater vehicle.

[0034] In the preferred embodiment, an underwater vehicle includes a flexible platform connection structure. The specific structure and beneficial effects of the flexible platform connection structure refer to the above embodiments and will not be described in detail here.

[0035] The invention provides a method for manufacturing an underwater vehicle.

[0036] In this preferred embodiment, a method for manufacturing the underwater vehicle based on the above is characterized by comprising the following steps: Step S10, prefabricate the rigid platform plate 2, the upper arc plate 11 and the flexible support structure 3 respectively; Step S20, welding and fixing the prefabricated flexible support structure 3 to the shell plate 4 of the pressure hull; Step S30, hoisting the rigid platform plate 2 to the top of the flexible support structure 3, welding the end of the elastic plate 15 to the side wall of the groove at the bottom end of the rigid platform plate 2; Step S40, the end surface of the upper arc plate 11 is welded to the shell plate 4 of the pressure hull and the end surface of the rigid platform plate 2 respectively, so as to fix the rigid platform plate 2.

[0037] In step S10 , when prefabricating the flexible support structure 3 , the bracket web 12 is welded together with the bracket upper panel 13 and the bracket lower panel 14 , and then the elastic plates 15 are welded to both side surfaces of the bracket web 12 .

[0038] The manufacturing method proposed by the present invention has a simple and easy operation process and high construction efficiency, and the manufactured structure is stable and reliable.

[0039] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flexible platform connection structure for an underwater vehicle, characterized in that: It includes a rigid platform plate, an upper curved plate and a flexible support structure, wherein: The flexible support structure includes a support plate and an elastic plate. A groove is formed on the bottom end surface of the rigid platform plate. The bottom end of the upper arc plate is fixedly connected to the side edge of the top end surface of the rigid platform plate. The top end of the upper arc plate is fixedly connected to the shell plate of the pressure-resistant hull. The support plate is accommodated in the groove and a gap is set with the bottom wall of the groove. The end of the support plate is fixedly connected to the shell plate of the pressure-resistant hull. Both side walls of the support plate extend outward with multiple elastic plates, and the ends of the elastic plates are fixedly connected to the grooved side walls of the rigid platform plate.

2. The flexible platform connection structure of an underwater vehicle according to claim 1, characterized in that: The rigid platform plate includes a platform plate, a crossbeam located below the platform plate and welded thereto, an end longitudinal beam and U-shaped stiffeners, the groove enclosed by the U-shaped stiffeners is an open groove, the two ends of the crossbeam are connected to the middle parts of the two U-shaped stiffeners, the two ends of the end longitudinal beam are connected to the ends of the two U-shaped stiffeners, and the open side of the U-shaped stiffener is arranged toward the shell plate of the pressure-resistant hull.

3. The flexible platform connection structure of an underwater vehicle according to claim 2, characterized in that: The support plate includes a bracket upper panel and a bracket lower panel which are arranged in parallel, and a bracket web connecting the bracket upper panel and the bracket lower panel, a plurality of elastic plates are fixed on both sides of the bracket web, the bracket web and the bracket upper panel are welded to the shell plate of the pressure hull, and the bracket upper panel is arranged in parallel with the platform plate and a gap is arranged between the two.

4. The flexible platform connection structure of an underwater vehicle according to claim 3, characterized in that: The height of the elastic plate is smaller than the height of the toggle plate web.

5. The flexible platform connection structure of an underwater vehicle according to claim 3, characterized in that: A gap is provided between the top end surface of the elastic plate and the upper panel of the toggle plate, and a gap is provided between the bottom end surface of the elastic plate and the lower panel of the toggle plate; the elastic plate and the web of the toggle plate are welded and connected.

6. The flexible platform connection structure of an underwater vehicle according to claim 3, characterized in that: The bracket web is vertically arranged with the bracket upper panel, the bracket web is vertically arranged with the shell plate of the pressure hull, the elastic plate is an arc plate, and the arc plates on both sides of the bracket web are symmetrically arranged.

7. The flexible platform connection structure of an underwater vehicle according to claim 1, characterized in that: The rib height of the pressure hull is H, and the gap width between the end face of the platform plate and the shell plate of the pressure hull is 0.8H~1.2H.

8. The flexible platform connection structure of an underwater vehicle according to claim 1, characterized in that: The rib spacing of the pressure hull is L, the width of the gap between the end face of the elastic plate away from the shell plate and the slot is 0.1L~0.3L, and the upper arc plate is arched upward.

9. An underwater vehicle, characterized in that: It comprises the flexible platform connection structure as described in any one of claims 1 to 8.

10. A method for manufacturing an underwater vehicle according to claim 9, characterized in that: The following steps are involved: Prefabricate the rigid platform plate, the upper curved plate and the flexible supporting structure respectively; Weld and fix the prefabricated flexible support structure to the shell plate of the pressure hull; Hoist the rigid platform plate to the top of the flexible support structure, and weld the end of the elastic plate to the side wall of the groove at the bottom end of the rigid platform plate; The end faces of the upper arc-shaped plate are respectively welded to the shell plate of the pressure-resistant hull and the end faces of the rigid platform plate, thereby fixing the rigid platform plate.

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