CN112885223A

CN112885223A - Mechanical wave sinusoidal motion simulation device and method

Info

Publication number: CN112885223A
Application number: CN202110218035.2A
Authority: CN
Inventors: 方子帆; 郑皓元; 王佳佳; 谢志恒; 朱畅; 左新球; 杨艳丽
Original assignee: China Three Gorges University CTGU
Current assignee: China Three Gorges University CTGU
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-06-01

Abstract

The invention provides a mechanical wave sinusoidal motion simulation device and a method, comprising a frame structure for supporting the whole device; the top of the frame structure is fixedly provided with a wave-like generating device for providing power; the wave-like generating device is connected with a wave-like collecting device which is used for collecting wave-like waves in a matching way. The device can simulate a corresponding wave-like curve in a laboratory according to different sea conditions.

Description

Mechanical wave sinusoidal motion simulation device and method

Technical Field

The invention relates to a mechanical wave sinusoidal motion simulation device and method, and belongs to the field of ocean wave energy.

Background

The wave is one of important dynamic factors in coastal and estuary engineering, and when researching the motion law of coastal and offshore waves, the natural conditions are complex, and the randomness of the wave motion is added. So far, some practical engineering problems cannot be solved well by a mathematical analysis method. And due to the limitation of economy, technology and the like, field observation can also be difficult to realize or even impossible. It is therefore essential to simulate waves and study the waves in a laboratory.

Disclosure of Invention

The present invention is to solve the above problems and provide a mechanical wave sinusoidal motion simulation device and method. The device can simulate a corresponding wave-like curve in a laboratory according to different sea conditions.

In order to achieve the technical features, the invention is realized as follows: a mechanical wave sine motion simulator comprises a frame structure for supporting the whole device; the top of the frame structure is fixedly provided with a wave-like generating device for providing power; the wave-like generating device is connected with a wave-like collecting device which is used for collecting wave-like waves in a matching way.

The rack structure comprises a fixed platform, and supporting legs are fixed at four corners of the bottom of the fixed platform.

The wave-like generating device comprises a motor, the motor is fixedly installed on a fixed platform of the frame structure through a motor base, a motor shaft of the motor is connected with an input shaft of the speed reducer through a coupler, and a cam is installed on an output shaft of the speed reducer.

Class wave collection system is including parallel arrangement's stand, lifting sliding fit has moving platform on the stand, be fixed with articulated seat on moving platform's the lateral wall, articulated the linking to each other through the top of round pin axle with the rocking arm on the articulated seat, rocking arm fixed mounting is on the top of float, the most advanced cam with class wave generator in bottom of float cooperatees.

The cam has a number of different models and can be replaced according to specific use requirements.

A rectangular groove is machined in the position, located on the cam, of the fixed platform, and the width of the rectangular groove is larger than that of the cam.

The motor adopts a direct current motor and adopts variable frequency speed regulation.

The speed reducer adopts a two-stage speed reducer.

The method for simulating the wave energy by adopting the mechanical wave sinusoidal motion simulation device comprises the following steps:

step 1: starting a motor, rotating the motor and controlling and changing the frequency of the motor;

step 2: the motor drives the speed reducer through a motor shaft and performs speed reduction through the speed reducer;

and step 3: the speed reducer drives the cam through the output shaft, and drives the floater through the cam;

and 4, step 4: the floater does up-down and back-and-forth reciprocating motion under the action of the cam;

and 5: the motion form of the floater can be changed by changing the type of the cam, so that different wave curves can be reflected.

The invention has the following beneficial effects:

1. the invention can change the frequency of the direct current motor according to the amplitude, frequency, period and the like of waves under different sea conditions to realize the frequency conversion speed regulation function.

2. The invention can change the amplitude of the cam according to the amplitude, frequency, period and the like of the waves under different sea conditions.

3. The invention does not need to go to the coast for on-site observation, can simulate a mechanical sine motion wave in a laboratory according to different sea conditions, and has simple and convenient equipment.

4. The invention adopts a modular design concept, and the wave-like generating device consists of a direct current motor, a secondary speed reducer and a cam and is arranged at the end of a fixed platform. The wave-like collecting device consists of a floater and a rocker arm and is placed on the movable platform. The modular design not only facilitates the operation of the whole simulation device, but also facilitates the replacement of different instruments according to different conditions.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a schematic view of the general structure of the present invention.

Figure 2 is a schematic view of a wave-like generation device of the present invention.

Fig. 3 is a schematic view of the wave-like collecting device of the present invention.

In the figure: the device comprises a motor 1, a motor shaft 2, a speed reducer 3, an output shaft 4, a cam 5, a floater 6, a rocker arm 7, a hinged seat 8, a fixed platform 9, a moving platform 10, a rectangular groove 11, an upright post 12, a coupler 13, an input shaft 14, a pin shaft 15, supporting legs 16 and a motor base 17.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1-3, a mechanical wave sinusoidal motion simulator includes a frame structure for supporting the entire device; the top of the frame structure is fixedly provided with a wave-like generating device for providing power; the wave-like generating device is connected with a wave-like collecting device which is used for collecting wave-like waves in a matching way. The frequency of the direct current motor can be changed according to the amplitude, the frequency, the period and the like of waves under different sea conditions by the device to realize the frequency conversion and speed regulation functions. In the specific use process, the similar wave generating device generates power to drive the similar wave collecting device, and finally the collection of wave energy is realized.

Further, the rack structure comprises a fixed platform 9, and supporting legs 16 are fixed at four corners of the bottom of the fixed platform 9. The whole fixed platform 9 can be stably supported by the support legs 16, and the stability and the reliability of the support are ensured.

Further, class wave generating device includes motor 1, motor 1 passes through motor base 17 fixed mounting on rack construction's fixed platform 9, and motor shaft 2 of motor 1 passes through shaft coupling 13 and links to each other with input shaft 14 of reduction gear 3, install cam 5 on the output shaft 4 of reduction gear 3. The wave-like generation device can be used for generating wave energy, in the working process, the motor 1 drives the speed reducer 3, the speed reducer 3 drives the cam 5, and then the cam 5 rotates to drive the wave-like collection device.

Further, class wave collection system is including parallel arrangement's stand 12, the ascending and descending sliding fit of stand 12 has moving platform 10, be fixed with articulated seat 8 on moving platform 10's the lateral wall, articulated seat 8 is gone up and is linked to each other through the top of round pin axle 15 with rocking arm 7 is articulated, rocking arm 7 fixed mounting is on the top of float 6, the most advanced cam 5 with class wave generator in bottom of float 6 cooperatees. The wave-like collecting device can be used for converting the generated power. The rotation of the cam 5 drives the float 6, and the movement of the float 6 drives the lifting action of the mobile platform 10.

Further, the cam 5 can be of many different types and can be replaced according to specific use requirements. By varying the different sizes of the cams 5, the amplitude of the wave-like curve in the wave simulation result can be varied.

Furthermore, a rectangular groove 11 is formed in the fixed platform 9 and is located on the cam 5, and the width of the rectangular groove 11 is larger than that of the cam 5. The rectangular groove 11 can support replacement of cams with different thicknesses and sizes.

Further, the motor 1 is a direct current motor and adopts variable frequency speed regulation. Thereby changing the period of the wave-like curve in the wave simulation result.

Further, the speed reducer 3 adopts a two-stage speed reducer. Through multistage speed reduction, can guarantee to obtain required stable rotational speed.

Example 2:

step 1: starting the motor 1, rotating the motor 1, and controlling and changing the frequency of the motor;

step 2: the motor 1 drives the speed reducer 3 through the motor shaft 2 and performs speed reduction through the speed reducer 3;

and step 3: the speed reducer 3 drives a cam 5 through an output shaft 4, and drives a floater 6 through the cam 5;

and 4, step 4: the floater 6 reciprocates up and down and back and forth under the action of the cam 5;

and 5: the movement form of the floater 6 can be changed by changing the model of the cam 5, so as to reflect the curves of different types of waves.

Claims

1. The utility model provides a mechanical type wave sinusoidal motion analogue means which characterized in that: the device comprises a frame structure for supporting the whole device; the top of the frame structure is fixedly provided with a wave-like generating device for providing power; the wave-like generating device is connected with a wave-like collecting device which is used for collecting wave-like waves in a matching way.

2. The mechanical wave sinusoidal motion simulation device of claim 1, wherein: the rack structure comprises a fixed platform (9), and supporting legs (16) are fixed at four corners of the bottom of the fixed platform (9).

3. The mechanical wave sinusoidal motion simulation device of claim 1, wherein: class wave generating device includes motor (1), motor (1) passes through motor base (17) fixed mounting on rack construction's fixed platform (9), and motor shaft (2) of motor (1) pass through shaft coupling (13) and link to each other with input shaft (14) of reduction gear (3), install cam (5) on output shaft (4) of reduction gear (3).

4. The mechanical wave sinusoidal motion simulation device of claim 1, wherein: class wave collection system is including parallel arrangement's stand (12), stand (12) rising and falling sliding fit has moving platform (10), be fixed with articulated seat (8) on the lateral wall of moving platform (10), articulated seat (8) are gone up and are linked to each other through the top of round pin axle (15) and rocking arm (7) is articulated, rocking arm (7) fixed mounting is on the top of float (6), the bottom of float (6) is most advanced to cooperate with class wave generating device's cam (5).

5. The mechanical wave sine motion simulator of claim 3, wherein: the cam (5) has a plurality of different models and can be replaced according to specific use requirements.

6. The mechanical wave sine motion simulator of claim 2, wherein: the fixed platform (9) is positioned on the cam (5) and is provided with a rectangular groove (11), and the width of the rectangular groove (11) is larger than that of the cam (5).

7. The mechanical wave sinusoidal motion simulation device of claim 1, wherein: the motor (1) adopts a direct current motor and adopts variable frequency speed regulation.

8. The mechanical wave sinusoidal motion simulation device of claim 1, wherein: the speed reducer (3) adopts a two-stage speed reducer.

9. A method of wave energy simulation using a mechanical wave sinusoidal motion simulation device according to any one of claims 1 to 8, comprising the steps of:

step 1: starting the motor (1), wherein the motor (1) rotates and controls and changes the frequency of the motor;

step 2: the motor (1) drives the speed reducer (3) through the motor shaft (2) and decelerates through the speed reducer (3);

and step 3: the speed reducer (3) drives the cam (5) through the output shaft (4), and drives the floater (6) through the cam (5);

and 4, step 4: the floater (6) reciprocates up and down and back and forth under the action of the cam (5);

and 5: the movement form of the floater (6) can be changed by changing the type of the cam (5), so that different wave curves can be reflected.