Hoisting structure for segmented ship model test

Abstract

The invention relates to a hoisting structure for a segmented ship model test, which comprises a bearing plate, an overturning plate, a fixing assembly and a hoisting tool, and is characterized in that the bearing plate is provided with an opening; the overturning plate is arranged at the opening and rotationally connected with the bearing plate, the overturning plate can rotate to the position where the overturning plate and the bearing plate are located on the same horizontal plane, and the overturning plate can also rotate to the position where the overturning plate and the opening are staggered; the output end of the lifting appliance is connected with the bearing plate; when the ship model is lifted, the turnover plate is rotated to the position where the turnover plate and the bearing plate are located on the same horizontal plane, the ship model is placed on the turnover plate, the lifting appliance drives the bearing plate connected with the lifting appliance to move to the water surface, the turnover plate is rotated to the position staggered with the opening, the lifting appliance drives the bearing plate to move upwards, and then the lifting process of the ship model is completed. When the ship model passes through the opening, the overturning plate rotates to a position staggered with the opening, the lifting appliance drives the bearing plate to move downwards until the ship model passes through the opening, the overturning plate rotates to a position on the same horizontal plane with the bearing plate, and the ship model borne on the overturning plate can be recycled through the lifting appliance.

Description

Technical Field

[0001] The invention relates to the technical field of segmented ship model testing, and in particular to a hoisting structure for segmented ship model testing. Background Art

[0002] The segmented ship model test is an important technical means to test the ship's seakeeping performance. The accurate prediction of hull motion and wave loads is the fundamental guarantee for ship structural design and navigation safety.

[0003] When conducting segmented ship model tests, it is necessary to install several strain gauges on the keel beam of the ship model to measure data such as the shear force and bending moment experienced by different sections of the hull in waves.

[0004] During the experiment, the ship model needs to be hoisted to the water surface. During the hoisting process, the hoist is directly connected to the ship model, which will cause the keel beam to have a certain deformation. At the same time, in the process of recovering the ship model, the hoist will cause further deformation to the keel beam, affecting the accuracy of the experimental data.

[0005] Therefore, it is necessary to configure a lifting structure that does not affect the deformation of the keel beam of the ship model. Summary of the invention

[0006] In view of this, it is necessary to provide a hoisting structure for segmented ship model testing to solve the problem that the keel beam will be deformed to a certain extent during the hoisting of the ship model, thereby affecting the accuracy of the test data.

[0007] The present invention provides a hoisting structure for testing segmented ship models, comprising a supporting plate, a flip plate, a fixing assembly and a hoisting device, wherein the supporting plate is provided with an opening for the ship model to pass through; the flip plate is arranged at the opening and is rotatably connected to the supporting plate, the flip plate can be rotated to a position located at the same horizontal plane as the supporting plate, and the flip plate can also be rotated to a position offset from the opening; the fixing assembly is arranged on the supporting plate or the flip plate, and is used to fix the ship model on the flip plate in an upright posture; and the output end of the hoisting device is connected to the supporting plate.

[0008] Furthermore, it also includes a water control component, which is installed on the support plate. The water control component has a water suction end and a drainage end. The water suction end of the water control component can absorb water to increase the load of the support plate, so that the support plate sinks, and the drainage end of the water control component can drain water to reduce the load of the support plate, so that the support plate floats.

[0009] Furthermore, the water control assembly includes four ballast tanks and four water pumps arranged at the four corners of the supporting plate, and the four water pumps are respectively installed on the four ballast tanks and are arranged in communication.

[0010] Furthermore, the water control component also includes a first connecting pipe and a second connecting pipe, one end of the water pump is connected to the ballast tank via the first connecting pipe, and the other end of the water pump is connected to the second connecting pipe.

[0011] Furthermore, the fixing assembly includes two water tanks, a plurality of sleeves and a plurality of piston rods arranged on both sides of the opening, the opposite sides of the two water tanks are respectively connected to the plurality of sleeves, the plurality of piston rods are respectively slidably and sealingly connected to the plurality of sleeves, and the opposite ends of the plurality of piston rods form a clamping gap for fixing the ship model.

[0012] Furthermore, the water control component also includes a third connecting pipe, and the water pump is connected to the ballast tank and the water tank via the third connecting pipe.

[0013] Furthermore, the fixing assembly also includes a plurality of elastic blocks, and the plurality of elastic blocks are respectively connected to one end of the plurality of piston rods extending outside the sleeve.

[0014] Furthermore, the flip plate includes two unit plates arranged opposite to each other, and the opposite sides of the two unit plates are rotatably connected to the receiving plate, and the two unit plates can be rotated to a horizontal position or a vertical position.

[0015] Furthermore, it also includes a telescopic oil cylinder, one end of which is hinged to the receiving plate, and the other end of which is slidably hinged to the flip plate.

[0016] Furthermore, it also includes two support plates fixedly connected to the bottoms of both sides of the supporting plate, and the telescopic cylinder is arranged at the bottom of the supporting plate.

[0017] Compared with the prior art, the flip plate is rotated to a position on the same horizontal plane as the supporting plate, the ship model is placed on the flip plate, the supporting plate connected thereto is driven to move to the water surface by the sling, the flip plate is rotated to a position offset from the opening, the sling drives the supporting plate to move up, and the ship model passes through the opening, thus completing the process of hoisting the ship model; when recovering, the flip plate is rotated to a position offset from the opening, the sling drives the supporting plate to move down until the ship model passes through the opening, the flip plate is rotated to a position on the same horizontal plane as the supporting plate, the bottom of the ship model contacts the flip plate, the ship model carried on the flip plate can be recovered by the sling, the ship model is hoisted by supporting means, no external force acts on the keel beam of the ship model, and the test data has high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a structure in which a ship model is placed on a flip board in a hoisting structure for a segmented ship model test provided by an embodiment of the present invention; Figure 2A schematic structural diagram of an opening through which a ship model can pass in a hoisting structure for a segmented ship model test provided by an embodiment of the present invention; Figure 3 A schematic top view of the entire hoisting structure for segmented ship model testing provided by an embodiment of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram of the middle part B; Figure 5 for Figure 3 Enlarged schematic diagram of part A in the middle. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0020] like Figure 1-3 As shown, the present invention provides a lifting structure for segmented ship model testing, including a supporting plate 100, a flip plate 200, a fixing assembly 500 and a lifting device 300. The supporting plate 100 is provided with an opening 110 for the ship model M to pass through; the flip plate 200 is arranged at the opening 110 and is rotatably connected to the supporting plate 100, the flip plate 200 can be rotated to a position located in the same horizontal plane as the supporting plate 100, and the flip plate 200 can also be rotated to a position offset from the opening 110; the fixing assembly 500 is arranged on the supporting plate 100 or the flip plate 200, and is used to fix the ship model M on the flip plate 200 in an upright posture; the output end of the lifting device 300 is connected to the supporting plate 100.

[0021] During implementation, the flip plate 200 is rotated to a position on the same horizontal plane as the supporting plate 100, the ship model M is placed on the flip plate 200, and the supporting plate 100 connected thereto is driven to move to the water surface by the sling 300, the flip plate 200 is rotated to a position offset from the opening 110, the sling 300 drives the supporting plate 100 to move upward, and the ship model M passes through the opening 110, thus completing the lifting process of the ship model M. During recovery, the flip plate 200 is rotated to a position offset from the opening 110, the sling 300 drives the supporting plate 100 to move downward until the ship model M passes through the opening 110, the flip plate 200 is rotated to a position on the same horizontal plane as the supporting plate 100, the bottom of the ship model M contacts the flip plate 200, the ship model M carried on the flip plate 200 can be recovered by the sling 300, the lifting of the ship model M is achieved by supporting, no external force acts on the keel beam of the ship model M, and the test data has high accuracy.

[0022] The supporting plate 100 and the flip plate 200 provided in this embodiment cooperate with each other to realize the non-damaging lifting or recovery of the ship model M without affecting the keel beam part of the ship model M.

[0023] During hoisting, the support plate 100 should ensure to dive as far as possible to the position where the ship model M can float on the water surface. At this time, it can effectively avoid the interaction force between the falling process of the ship model M and the water surface during the flipping of the flip plate 200. At the same time, during the recovery process, in order to ensure that the support plate 100 can float to the position below the ship model M, it is necessary to control the buoyancy of the support plate 100. In summary, the water level of the support plate 100 needs to be controlled during the hoisting and recovery processes.

[0024] To this end, the present embodiment also includes a water control component 400, which is installed on the support plate 100. The water control component 400 has a water absorption end and a drainage end. The water absorption end of the water control component 400 can absorb water to increase the load of the support plate 100, so that the support plate 100 dives, and the drainage end of the water control component 400 can drain water to reduce the load of the support plate 100, so that the support plate 100 floats.

[0025] The water control assembly 400 can effectively control the water level of the supporting plate 100 , so that the flip plate 200 can gently place the ship model M on the water surface, or effectively contact the bottom of the ship model M.

[0026] like Figure 3-4 As shown, the water control assembly 400 in this embodiment includes four ballast tanks 410 and four water pumps 420 arranged at the four corners of the supporting plate 100. The four water pumps 420 are respectively installed on the four ballast tanks 410 and are arranged in communication.

[0027] In one embodiment, the water control assembly 400 further includes a first connecting pipe 430 and a second connecting pipe 440 , one end of the water pump 420 is connected to the ballast tank 410 via the first connecting pipe 430 , and the other end of the water pump 420 is connected to the second connecting pipe 440 .

[0028] Since the bottom of the ship model M is not a flat structure, it may tip over when placed on the flip plate 200. Figure 3 and Figure 5 As shown, the fixing assembly 500 of this embodiment is disposed on the supporting plate 100 or the flip plate 200, and is used to fix the ship model M on the flip plate 200 in an upright posture.

[0029] In the first embodiment, the fixing assembly 500 may be a groove formed on the top of the flip plate 200, and the bottom of the ship model M is embedded in the groove. In another embodiment, the fixing assembly 500 is installed on a supporting plate 100, and includes two water tanks 510, a plurality of sleeves 520 and a plurality of piston rods 530 arranged on both sides of the opening 110. The opposite sides of the two water tanks 510 are respectively connected with the plurality of sleeves 520, and the plurality of piston rods 530 are respectively slidably and sealingly connected with the plurality of sleeves 520, and the opposite ends of the plurality of piston rods 530 form a clamping gap for fixing the ship model M.

[0030] In one embodiment, the water control assembly 400 further includes a third connecting pipe 450, and the water pump 420 is connected to the ballast tank 410 and the water tank 510 via the third connecting pipe 450. The water in the ballast tank 410 can be pumped into the water tank 510 by the water pump 420, so that the water in the water tank 510 increases, thereby causing the multiple piston rods 530 to move relative to each other for clamping and fixing the ship model M. Similarly, the water in the water tank 510 can also be pumped into the ballast tank 410 by the water pump 420, so that the water in the water tank 510 decreases, thereby causing the multiple piston rods 530 to move in opposite directions for releasing the ship model M.

[0031] To avoid hard contact between the piston rod 530 and the ship model M, the fixing assembly 500 further includes a plurality of elastic blocks 531, which are respectively connected to one end of the plurality of piston rods 530 extending outside the sleeve 520. It is understandable that the elastic block 531 can be implemented by a rubber structure.

[0032] In order to limit the sliding path of the piston rod 530 , a limiting ring 532 may be further provided on the piston rod 530 to limit the retraction distance of the piston rod 530 .

[0033] To improve the flipping efficiency of the flip plate 200, the flip plate 200 in this embodiment includes two unit plates arranged opposite to each other, and the opposite sides of the two unit plates are rotatably connected to the receiving plate. The two unit plates can be rotated to a horizontal position or a vertical position.

[0034] This embodiment further includes a telescopic oil cylinder 210, one end of which is hinged to the receiving plate, and the other end of which is slidably hinged to the flip plate 200. The action of the telescopic oil cylinder 210 can drive the flip plate 200 to rotate.

[0035] In one embodiment, two support plates are further included which are fixedly connected to the bottom of both sides of the support plate 100, and the telescopic cylinder 210 is disposed at the bottom of the support plate 100. The support block can provide support for the support plate 100, and at the same time, the installation position of the telescopic cylinder 210 can avoid interference with other structures.

[0036] During the recovery process, it is difficult to control the opening 110 on the supporting plate 100 to face the ship model M. For this reason, during recovery, the sling 300 can drive the supporting plate 100 to move to the side position of the ship model M, and make the supporting plate 100 dive to a certain depth through the water control component 400, and drive the supporting plate 100 to move to the position below the ship model M (or control the ship model M to move to the position above the supporting plate 100) under the action of the sling 300, and the supporting plate 100 moves up until it contacts the ship model M (at this time, the flip plate 200 can rotate a smaller angle to facilitate the floating process of the supporting plate 100), so as to realize the connection function between the supporting plate 100 and the ship model M, until the ship model M leaves the water surface and the recovery process is completed.

[0037] The sling 300 in this embodiment is a structure of a crane that can be thought of by those skilled in the art, and is connected to the four corners of the supporting plate 100 via connecting ropes, which will not be elaborated and described in detail here.

[0038] Compared with the prior art: the flip plate 200 is rotated to a position on the same horizontal plane as the supporting plate 100, the ship model M is placed on the flip plate 200, the supporting plate 100 connected thereto is driven to move to the water surface by the sling 300, the flip plate 200 is rotated to a position offset from the opening 110, the sling 300 drives the supporting plate 100 to move upward, and the ship model M passes through the opening 110, thus completing the lifting process of the ship model M. When recovering, the flip plate 200 is rotated to a position offset from the opening 110, the sling 300 drives the supporting plate 100 to move downward until the ship model M passes through the opening 110, the flip plate 200 is rotated to a position on the same horizontal plane as the supporting plate 100, the bottom of the ship model M contacts the flip plate 200, the ship model M carried on the flip plate 200 can be recovered by the sling 300, the lifting of the ship model M is achieved by supporting, no external force acts on the keel beam of the ship model M, and the test data has high accuracy.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A hoisting structure for segmented ship model testing, characterized in that: include: A supporting plate having an opening for the ship model to pass through; A flip plate, which is arranged at the opening and is rotatably connected to the supporting plate, the flip plate can be rotated to a position located at the same horizontal plane as the supporting plate, and the flip plate can also be rotated to a position staggered from the opening; A fixing assembly, which is arranged on the supporting plate or the flip plate and is used to fix the ship model on the flip plate in an upright posture; A sling, the output end of which is connected to the supporting plate.

2. The hoisting structure for segmented ship model testing according to claim 1 is characterized in that: It also includes a water control component, which is installed on the support plate. The water control component has a water suction end and a drainage end. The water suction end of the water control component can absorb water to increase the load-bearing capacity of the support plate and make the support plate sink, and the drainage end of the water control component can drain water to reduce the load-bearing capacity of the support plate and make the support plate float.

3. The hoisting structure for segmented ship model testing according to claim 2 is characterized in that: The water control assembly includes four ballast tanks and four water pumps arranged at the four corners of the supporting plate. The four water pumps are respectively installed on the four ballast tanks and are connected to each other.

4. The hoisting structure for segmented ship model testing according to claim 3 is characterized in that: The water control assembly further includes a first connecting pipe and a second connecting pipe. One end of the water pump is connected to the ballast tank via the first connecting pipe, and the other end of the water pump is connected to the second connecting pipe.

5. The hoisting structure for segmented ship model testing according to claim 3 is characterized in that: The fixing assembly includes two water tanks, a plurality of sleeves and a plurality of piston rods arranged on both sides of the opening. The opposite sides of the two water tanks are respectively connected with the plurality of sleeves, and the plurality of piston rods are respectively slidably and sealingly connected with the plurality of sleeves. The opposite ends of the plurality of piston rods form a clamping gap for fixing the ship model.

6. The hoisting structure for segmented ship model testing according to claim 5 is characterized in that: The water control assembly further includes a third connecting pipe, and the water pump is connected to the ballast tank and the water tank via the third connecting pipe.

7. The hoisting structure for segmented ship model testing according to claim 5, characterized in that: The fixing assembly further comprises a plurality of elastic blocks, and the plurality of elastic blocks are respectively connected to one end of the plurality of piston rods extending outside the sleeve.

8. The hoisting structure for segmented ship model testing according to claim 1 is characterized in that: The flip plate comprises two unit plates arranged opposite to each other, and the opposite sides of the two unit plates are rotatably connected to the receiving plate, and the two unit plates can be rotated to a horizontal position or a vertical position.

9. The hoisting structure for segmented ship model testing according to claim 1, characterized in that: It also includes a telescopic oil cylinder, one end of which is hinged to the receiving plate, and the other end of which is slidably hinged to the flip plate.

10. The hoisting structure for segmented ship model testing according to claim 9, characterized in that: It also includes two support plates fixedly connected to the bottoms of both sides of the support plate, and the telescopic cylinder is arranged at the bottom of the support plate.

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