Vibrating device with elliptical orbit

Abstract

The invention relates to the field of fluid mechanics experiment equipment, in particular to a vibration table for simulating motion of a fluctuating fluid unit, which comprises a base, a square hollow steel pipe for supporting and a frequency modulation power supply are arranged on the base, and an engine is arranged on the steel pipe; the eccentric disc and the sleeve shaft thereof are mounted on the engine, and the engine drives the eccentric disc to rotate and is used for generating periodic movement; the bracket is connected with the eccentric disc sleeve shaft; the test box is installed on the support, the position of the test box is higher than the axis of the engine, the test box is used for generating motion of an elliptical track, and liquid or granular solids can be placed in the test box. According to the geometric principle, when the device runs, liquid or granular solids in the test box can generate elliptical track motion with the radius gradually attenuating from high to low, so that the fluctuation of seawater or the fluctuation of a liquefied seabed soil body is simulated. The device has high practicability for studying transportation of substances in sea waves or sedimentation of solids in the sea waves.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrodynamic experimental equipment, and particularly relates to a vibration device with an elliptical trajectory. Background Art

[0002] Waves are an important form of seawater movement. The fluctuations of seawater exhibit movement characteristics different from other fluctuations in nature. Seawater particles move in an elliptical trajectory that gradually decays from shallow to deep. When waves act on the soft estuarine delta seabed, they can cause the resuspension of seabed sediments, and stronger wave actions can cause liquefaction. The liquefied soil mass moves in an elliptical trajectory similar to that of waves.

[0003] Studying the movement of solids and mass transport in fluctuating water bodies or soil masses is a current research hotspot. Therefore, it is necessary to design an experimental device that can imitate this elliptical trajectory movement, including a support device, a power system, and a transmission device. Summary of the Invention

[0004] The present invention designs a vibration device with an elliptical trajectory to solve the problems in the background art.

[0005] To achieve the above object, the present invention designs the following technical solution: A vibration device with a elliptical movement trajectory, including a main body, a transmission shaft, an additional bracket, and a test box. The main body consists of a base, a frequency modulation power supply, an engine, and fixed screw holes. The transmission shaft consists of an eccentric disk, an eccentric disk sleeve, an eccentric disk sleeve shaft, and an axis fixing device. The additional bracket is fixed on the transmission shaft, and the test box is fixed on the additional bracket. A certain depth or thickness of liquid or granular solid can be placed in the test box.

[0006] Furthermore, the base needs to be fixed to the ground with parts such as screws to prevent the entire device from being unstable due to vibration during the operation of the engine.

[0007] Furthermore, a thick square tube is connected to the middle of the base to fix the engine; fixed screw holes are opened on the square tube.

[0008] Furthermore, a thin square tube is connected to the rear of the base to hide the wires between the engine and the frequency modulation power supply.

[0009] Furthermore, each eccentric disk is welded by three small disks with the same thickness but different radii. The two outer disks have larger radii, and the inner disk has a smaller radius. The two combined disks are welded under the condition of controlling the center distance between them, and an axis fixing device is welded at the welding position. The axis fixing device can allow the rotating shaft of the engine to be inserted, and the two are fixed with screws.

[0010] Furthermore, the eccentric disks have multiple models with the same thickness but different eccentric distances.

[0011] Furthermore, an eccentric disk sleeve is installed outside the eccentric disk. The eccentric disk sleeve is welded by three fillet rectangular iron rings with the same thickness but different widths. The thickness of the iron sheet is the same as that of the small disk forming the eccentric disk. The middle iron ring is wide and the outer iron rings are narrow, enabling the eccentric disk to slide on the eccentric disk sleeve in an orbital manner.

[0012] Furthermore, a thick iron sheet is welded below the eccentric disk sleeve, and a strip-shaped sliding rail is opened on the iron sheet. Screws are passed through the sliding rail and the fixing screw holes on the base square tube for fixation, which can limit the movement of the main shaft.

[0013] Furthermore, the eccentric disk is connected to the bracket by screws, and a slot is provided on the bracket for placing the test chamber.

[0014] Furthermore, the size of the test chamber should fit the size of the bracket.

[0015] Advantages of the present invention:

[0016] The present invention utilizes the eccentricity of the combined disk to achieve an elliptical trajectory motion with a gradually decreasing radius from high to low, thereby simulating the motion trajectory of water quality points or liquefied soil particles in the ocean wave phenomenon. Description of the drawings

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 1 In [the figure], 1 is the above-mentioned base, 2 is the above-mentioned eccentric disk, and 3 is the above-mentioned eccentric disk sleeve;

[0020] Figure 2 is Figure 1 a schematic diagram of the structure of the base part in [the figure];

[0021] Figure 3 is Figure 1 a partially enlarged view of the eccentric disk part in [the figure];

[0022] Figure 4 is Figure 1 a partially enlarged view of the eccentric disk sleeve part in [the figure];

[0023] In the figure: 1. Base; 11. Chassis; 12. Frequency modulation power supply; 13. Thick square tube; 14. Fixed screw hole; 15. Thin square tube; 16. Engine; 2. Eccentric disk; 21. Combined disk; 22. Axis fixing device; 3. Eccentric disk sleeve; 31. Combined iron sheet; 32. Eccentric disk sleeve shaft; 33. Slide rail; 4. Fixed screw; 5. Test chamber. Detailed implementation manners

[0024] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative ways to implement them; moreover, the accompanying drawings are only for more specifically describing the embodiments, and are not intended to specifically limit the present invention.

[0025] It should be pointed out that in the specification, when referring to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., it indicates that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes this specific feature, structure or characteristic. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such a feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge scope of those skilled in the relevant art.

[0026] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. In addition, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but instead, at least in part depending on the context, allowing the existence of other factors that are not necessarily explicitly described.

[0027] As Figures 1 to 4 shown, a vibration device with an elliptical trajectory includes a base, on which a frequency modulation power supply and a thick and a thin square tube are installed, and an engine is installed above the square tubes; the transmission shaft, the bracket and the test chamber can all be separated from the base. The transmission shaft is connected to the engine through a sleeve shaft, the bracket is connected to the transmission shaft through screws, and the test chamber can be installed in the slot of the bracket.

[0028] Furthermore, the lower part of the transmission shaft is connected to a thick iron sheet, and a slide rail is opened on the thick iron sheet. The screw is passed through the slide rail and the fixed hole of the above-mentioned thick square tube to achieve the function of restricting displacement.

[0029] Working mode: Adjust the frequency modulation power supply to make the engine drive the transmission shaft to rotate. Since the position of each point in the test chamber is higher than the axis of the engine shaft, according to geometric principles, the movement trajectory of each point in the test chamber is an ellipse. Moreover, the higher the initial position, the longer the horizontal axis of the elliptical trajectory, while the length of the vertical axis does not change with the change of the initial position. In this vibration device, the sensor is placed in the test chamber and can monitor physical quantities such as the motion state and pressure change of the liquid or granular solid therein. It converts the monitored physical quantities into electrical signals and transmits them out through the holes opened on the top edge of the box body via the data line. The data acquisition instrument is responsible for collecting these electrical signals and converting them into digital signals. The computer device then analyzes, processes, and stores the digital signals, thereby providing data support for studying the motion law of substances in fluctuating fluids.

[0030] Furthermore, if the position of the fixed screw hole is changed without replacing the transmission shaft, the length of the horizontal axis of the elliptical trajectory can be changed.

[0031] Furthermore, if the transmission shaft with different eccentric distances is replaced, the length of the vertical axis of the elliptical trajectory can be changed.

[0032] In at least one embodiment, a soil body with a certain thickness is placed in the test chamber, and a certain thickness of water is covered on the soil body. Soil liquefaction can be achieved at a certain engine frequency.

[0033] In at least one embodiment, a soluble substance is placed at the bottom of the test chamber, and a certain depth of water is injected into the chamber. The diffusion effect of substances in the fluctuating water body can be achieved at a certain engine frequency. The concentration distribution of the soluble substance in the water body can be described by methods such as dyeing and tracer.

[0034] The present invention covers any substitutions, modifications, equivalent methods, and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vibration device with an elliptical trajectory, characterized in that including a base (1), which is square and on which a frequency modulation power supply (12) and a square hollow steel pipe for support are arranged. The square hollow steel pipe for support includes a thick square pipe (13) and a thin square pipe (15). An engine (16) is arranged above the steel pipe and is the driving part of the device; an eccentric disc (2) is inserted on the engine through a slot, and an eccentric disc sleeve (3) is connected to the eccentric disc through a slide rail and is used to generate an elliptical motion track; a bracket (4) is installed on the eccentric disc sleeve and is used to support the test chamber; a test chamber (5), which is made of transparent material and can place liquid or granular solid and sensors. The data lines of the sensors extend outside the chamber through the openings on the top edge of the chamber body; a data acquisition and analysis system, which is a data acquisition instrument and computer equipment supporting the sensors.

2. The shaking table according to claim 1, wherein, The frequency modulation power supply (12) is arranged at the corner of the square base, and the thick square pipe (13) and the thin square pipe (15) are arranged in the center of the base.

3. The shaking table according to claim 1, characterized in that, The base (1), the eccentric disc (2) and the eccentric disc sleeve (3), the bracket (4), the test chamber (5), the sensors and the data acquisition and analysis system can all be disassembled.

4. The shaking table according to claim 1, characterized in that, The eccentric disc (2) has different specifications, and the discs of each specification have the same radius but different eccentric distances.

5. The shaking table according to claim 1, characterized in that, Eccentric discs (2) of different specifications are equipped with eccentric disc sleeves (3) of different specifications.

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