A wave-making device for ship hydroelasticity tests

Abstract

The present invention discloses a wave-making device for ship hydroelasticity tests, which includes a bottom frame having a water inlet and a water outlet and capable of accommodating a ship model for hydroelasticity tests, slide rails provided at the upper ends of the front and rear side surfaces of the bottom frame, a mounting frame spanning above the bottom frame and capable of sliding along with the slide rails, a wave generation mechanism provided under the mounting frame and capable of continuously generating waves in the bottom frame, and a ship model positioning mechanism provided under the mounting frame and used for clamping the ship model and adjusting the position of the ship model. This device can continuously generate waves, solves the problem of low wave frequency of the existing wave-making devices for ship hydroelasticity tests, and can also conveniently adjust the position of the ship model, improving the practicability of the device.

Description

Technical Field

[0001] The present invention relates to the field of hydroelasticity tests, and particularly to a wave generation device for ship hydroelasticity tests. Background Art

[0002] The sea waves in nature are mainly formed by the wind driving the sea water, and many small waves continuously stack up to form large waves. During the forward movement of the sea waves, if they encounter the coast, submarine uplift or the contraction of the flow area, some special huge waves will be formed, especially the tube waves suitable for surfing competitions, which become the "high-quality waves" of surfing sports.

[0003] Traditional wave generation methods mainly include the vacuum method, the reflection method and the wave-making board traction method. Artificial waves for surfing training and competitions require sufficient wave height, sufficient duration and appropriate wave shape. Therefore, the wave-making board traction method is a commonly used wave generation method. The working mode of the wave-making board traction method determines that usually only one wave can be generated in each stroke, so the wave frequency is relatively low and it is difficult to meet the experimental needs. In hydroelasticity experiments, continuous waves are generally required to obtain verified hydroelastic data.

[0004] Therefore, it is urgent to solve the above problems. Summary of the Invention

[0005] Object of the Invention: The object of the present invention is to provide a wave generation device for ship hydroelasticity tests that can continuously generate waves.

[0006] Technical Solution: The present invention provides a wave generation device for ship hydroelasticity tests, including a bottom frame with a water inlet and a water outlet and capable of accommodating a ship model for hydroelasticity tests, slide rails provided at the upper ends of the front and rear side surfaces of the bottom frame, a mounting frame spanning above the bottom frame and capable of sliding along the slide rails, a wave generation mechanism provided under the mounting frame and capable of continuously generating waves in the bottom frame, and a ship model positioning mechanism provided under the mounting frame and used for clamping the ship model and adjusting the position of the ship model.

[0007] Furthermore, the wave generation mechanism includes a first motor provided on one side of the mounting frame, a lead screw connected to the first motor and mounted between the front and rear side walls of the mounting frame, a slide bar fixedly connected between the front and rear side walls of the mounting frame, a slider slidably sleeved on the slide bar and capable of moving along with the lead screw, a sliding frame connected to the lower part of the slider and capable of moving along with the slider, and turning plates symmetrically provided between the left and right side walls of the bottom frame and generating waves following the movement of the sliding frame; the first motor drives the lead screw to rotate, the lead screw drives the slider to slide on the slide bar, the sliding frame reciprocates back and forth in the bottom frame along with the slider, driving the turning plates to rotate to generate waves.

[0008] Preferably, an opening for connecting with the sliding frame is provided at the upper end of the turning plate.

[0009] Furthermore, the ship model positioning mechanism includes a connecting plate disposed in the middle of the mounting frame, an electric cylinder fixed below the connecting plate and capable of adjusting the underwater depth of the ship model, a second motor disposed below the electric cylinder and used for adjusting the orientation of the ship model, a mounting plate disposed at the output end of the second motor and capable of changing its position as the motor rotates, and a ship model clamping device disposed on the mounting plate and used for clamping the ship model.

[0010] Further, the ship model clamping device includes screws disposed on both sides of the upper surface of the mounting plate, push plates sleeved on the screws and capable of moving up and down along the screws, limit slide bars fixedly connected to the lower end of the mounting plate, inclined blocks slidably sleeved on both ends of the limit slide bars, springs symmetrically sleeved on the limit slide bars and having one end connected to the inclined blocks, and clamping plates fixedly connected below the inclined blocks and used for clamping the ship model. The push plates penetrate through the mounting plate and abut against the inclined surfaces of the inclined blocks. By rotating the screws, the push plates move downward to push the inclined blocks at both ends of the limit slide bars to move closer to the middle, and the inclined blocks drive the clamping plates to move closer to the middle to clamp the ship model.

[0011] Preferably, the push plates are L-shaped and are threadedly sleeved on the surfaces of the screws.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following remarkable advantages:

[0013] (1) The first motor drives the slider to reciprocate back and forth, driving the two rotating plates in the bottom frame to rotate continuously, thereby continuously generating waves, solving the problem of the relatively low wave frequency of the wave-making equipment in the existing ship hydroelasticity test;

[0014] (2) The ship model is easily overturned or its position is changed in the waves. The ship model clamping mechanism can keep the ship model stable in the waves, improving the stability of the test data;

[0015] (3) The orientation and the depth of the ship model in the water can both be adjusted according to the requirements of the test, facilitating the acquisition of ship model hydroelasticity test data in multiple situations. Description of the Drawings

[0016] Figure 1 is the front structural sectional view of the present invention;

[0017] Figure 2 is the side structural sectional view of the present invention;

[0018] Figure 3 is the side structural sectional view at the sliding frame of the present invention;

[0019] Figure 4 is the top view of the present invention. Detailed Embodiments

[0020] The technical solutions of the present invention will be further described below with reference to the drawings.

[0021] As Figure 1And Figure 2 As shown, a wave-making device for ship hydroelasticity tests disclosed by the present invention includes a bottom frame 1, a slide rail 2, a mounting frame 3, a wave generation mechanism 4, and a ship model positioning mechanism 5. The bottom frame 1 is used to accommodate the ship model for hydroelasticity tests, and the size of the bottom frame can be determined according to actual test requirements. The top of the bottom frame is open, and water inlets 101 and water outlets 102 are respectively opened on the left and right side walls of the bottom frame. During the test, water is continuously injected into the bottom frame from the water inlet and then discharged from the water outlet, which can simulate flowing water. The slide rail 2 is provided at the upper ends of the front and rear sides of the bottom frame. A groove equal in length to the front and rear sides of the bottom frame is opened at the upper end of the bottom frame, and an electric slider that can slide along the slide rail is provided in the groove. The mounting frame 3 spans above the bottom frame, is inverted U-shaped and has a certain height when viewed from the side. When viewed from the top-down perspective, the top of the mounting frame is two parallel frames spanning above the bottom end. The bottom of the mounting frame is connected to the electric slider on the bottom frame, and the mounting frame can slide on the slide rail along with the electric slider.

[0022] The wave generation mechanism 4 is provided under the mounting frame and can continuously generate waves in the bottom frame. The wave generation mechanism includes a first motor 401, a lead screw 402, a slide bar 403, a slider 404, a slide frame 405, a rotating plate 406, and an opening 407. The first motor 401 is provided on each side of the two parallel frames of the mounting frame and is used to provide power for the lead screw 402. The lead screw 402 is connected to the first motor and is arranged between the front and rear side walls of the mounting frame. Preferably, 2 lead screws are provided, respectively arranged under the two parallel frames of the mounting frame. The slide bar 403 is arranged parallel to the lead screw up and down, and the slide bar is fixedly connected between the front and rear side walls of the mounting frame. The slider 404 is slidably sleeved on the slide bar and can move along with the lead screw. The slide frame 405 is connected below the slider and moves synchronously with the slider. The rotating plate 406 is symmetrically arranged between the left and right side walls of the bottom frame, and an opening 407 is provided at the upper end of the rotating plate. The slide frame is sleeved in the opening to realize the connection between the rotating plate and the slide frame, so that the rotating plate can rotate following the reciprocating movement of the slide frame back and forth in the bottom frame. The first motor drives the lead screw to rotate, the lead screw drives the slider to slide on the slide bar, and the slide frame reciprocates back and forth in the bottom frame along with the slider, driving the rotating plate to rotate to generate waves.

[0023] The ship model positioning mechanism 5 is provided under the mounting frame and is used to clamp the ship model and adjust the position of the ship model. The ship model positioning mechanism includes a connecting plate 501, an electric cylinder 502, a second motor 503, a mounting plate 504, and a ship model clamping device. The connecting plate 501 is arranged in the middle of the two parallel frames of the mounting frame. The electric cylinder 502 is fixed below the connecting plate, and the piston end of the electric cylinder faces downward, which can adjust the depth of the ship model underwater. The second motor 503 is arranged below the electric cylinder. A flat plate is connected to the piston end of the electric cylinder, and the second motor is arranged below the flat plate. The second motor is used to adjust the orientation of the ship model. The mounting plate 504 is connected to the output end of the second motor and can change its position following the rotation of the second motor. The ship model clamping device is arranged on the mounting plate and is used to clamp the ship model.

[0024] The ship model clamping device includes a screw rod 505, a push plate 506, a limit slide bar 507, an inclined block 508, a spring 509 and a clamping plate 510. One screw rod 505 is provided on each side of the upper surface of the mounting plate, and the screw rod can rotate. The push plate 506 is sleeved on the screw rod and can move up and down along the screw rod. Preferably, it is L-shaped. The bottom end of the L-shape is threadedly sleeved on the screw rod, and the vertical end of the L-shape penetrates downward through the mounting plate and abuts against the inclined surface of the inclined block, so that the push plate can slide on the inclined surface of the inclined block; the limit slide bar 507 is fixedly connected to the lower end of the mounting plate, and the inclined block 508 is slidably sleeved at both ends of the limit slide bar. When the inclined block is subjected to force, it can slide along the limit slide bar; the spring 509 is symmetrically sleeved on the limit slide bar, and one end of the spring is connected to the inclined block; the clamping plate 510 is fixedly connected below the inclined block. When the inclined block is subjected to force and moves closer to the center, the clamping plate also moves closer to the center, thereby clamping the ship model. By rotating the screw rod, the push plate moves downward to push the inclined blocks at both ends of the limit slide bar to move closer to the middle, and the inclined blocks drive the clamping plates to move closer to the middle to clamp the ship model. The ship model is easily overturned or its position is changed in the waves. The ship model clamping mechanism can keep the ship model stable in the waves, improving the stability of the test data; the orientation of the ship model and its depth in the water can be adjusted according to the requirements of the test, facilitating the acquisition of ship model hydroelastic test data under multiple conditions.

Claims

1. A wave-making device for ship hydroelasticity tests, characterized in that, It includes a bottom frame (1) with a water inlet (101) and a water outlet (102) and capable of accommodating a ship model for a hydroelasticity test, slide rails (2) provided at the upper ends of the front and rear side surfaces of the bottom frame, a mounting frame (3) spanning above the bottom frame and capable of sliding along the slide rails, a wave generating mechanism (4) provided under the mounting frame and capable of continuously generating waves in the bottom frame, and a ship model positioning mechanism (5) provided under the mounting frame and used for clamping the ship model and adjusting the position of the ship model; the wave generating mechanism (4) includes first motors (401) provided on the left and right sides of the mounting frame, lead screws (402) connected to the first motors and mounted between the front and rear side walls of the mounting frame, slide rods (403) fixedly connected between the front and rear side walls of the mounting frame, sliders (404) slidably sleeved on the slide rods and capable of moving along with the lead screws, sliding frames (405) connected to the lower sides of the sliders and capable of moving along with the sliders, and turning plates (406) symmetrically provided between the left and right side walls of the bottom frame and generating waves following the movement of the sliding frames; openings (407) for connecting with the sliding frames are provided at the upper ends of the turning plates (406); the first motors drive the lead screws to rotate, the lead screws drive the sliders to slide on the slide rods, the sliding frames move back and forth in the bottom frame along with the sliders, driving the turning plates to rotate to generate waves. There are two turning plates (406), and the first motors provided on the left and right sides of the mounting frame respectively drive the turning plates on the corresponding sides.

2. The wave-making device for ship hydroelasticity test according to claim 1, characterized in that, The ship model positioning mechanism (5) includes a connecting plate (501) provided in the middle of the mounting frame, an electric cylinder (502) fixed under the connecting plate and capable of adjusting the underwater depth of the ship model, a second motor (503) provided under the electric cylinder and used for adjusting the orientation of the ship model, a mounting plate (504) provided at the output end of the second motor and capable of changing its position as the motor rotates, and a ship model clamping device provided on the mounting plate and used for clamping the ship model.

3. The wave-making device for ship hydroelasticity test according to claim 2, characterized in that, The ship model clamping device includes screws (505) provided on both sides of the upper surface of the mounting plate, push plates (506) sleeved on the screws and capable of moving up and down along the screws, limit slide rods (507) fixedly connected to the lower ends of the mounting plate, inclined blocks (508) slidably sleeved at both ends of the limit slide rods, springs (509) symmetrically sleeved on the limit slide rods and connected to one ends of the inclined blocks, and clamping plates (510) fixedly connected under the inclined blocks and used for clamping the ship model. The push plates penetrate the mounting plate and press against the inclined surfaces of the inclined blocks. By rotating the screws, the push plates move downward to push the inclined blocks at both ends of the limit slide rods to move closer to the middle, and the inclined blocks drive the clamping plates to move closer to the middle to clamp the ship model.

4. The wave-making device for ship hydroelasticity test according to claim 3, characterized in that, The push plate (506) is L-shaped and is threadedly sleeved on the surface of the screw.

5. The wave-making device for ship hydroelasticity test according to claim 1, characterized in that, The mounting frame (3) has a certain height, and the side profile of the mounting frame is an inverted U shape.

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