A new type of hydraulic drive swing plate wave making device

Abstract

The application discloses a new type of hydraulic driving swing plate wave making device and relates to the field of soil centrifugal simulation test devices. The traditional linear hydraulic wave making device mechanism is prone to problems such as jamming, liquid leakage, wave form transmission distortion and the like when running at high speed under a super gravity field. The application utilizes the natural anti-centrifugal force characteristics of a servo hydraulic swing cylinder, and uses a heavy load cylindrical rod to directly hinge a wave making plate and the hydraulic swing cylinder, thereby simplifying the transmission mechanism, overcoming the non-uniform deformation of the linear hydraulic mechanism and the transmission mechanism under a super gravity field, and overcoming the above-mentioned problems such as the existence of high-order harmonics in wave form transmission. The application has the advantages of stable and reliable mechanism and small deformation, improves the transmission efficiency and service life of the equipment, and can realize high water depth, high frequency and large amplitude wave making under a super gravity field.

Description

Technical Field

[0001] This application relates to the field of geotechnical centrifuge simulation test devices, and in particular to a novel hydraulically driven rocker wave generator. Background Technology

[0002] Wave loads are a key environmental load to consider in marine engineering structures and coastal engineering, characterized by long cyclic durations. Wave-generating experimental devices under hypergravity fields, due to the strict similarity between the model and the prototype, are capable of realistically reproducing ocean waves, seabed foundation stress fields, and seabed structures. They are characterized by small size and high reliability, making them an important tool for simulating wave-seabed foundation-marine engineering structures.

[0003] Existing hydraulic wave-generating devices in hypergravity fields are mainly based on linear hydraulic drive structures. For example, the push-plate wave generator developed by Zhejiang University uses a linear hydraulic actuator to drive the wave-generating plate to reciprocate in a linear direction, pushing the water in the model box to generate waves; the overall engineering research of the China Academy of Engineering Physics uses a linear hydraulic drive rocking plate wave generator, which drives the slider on the wave-generating plate to reciprocate around the swing axis through a series of connecting devices.

[0004] In the process of realizing this invention, the inventors discovered the following problems in the prior art:

[0005] 1) Linear hydraulic drive mechanisms are prone to significant deformation and jamming under hypergravity conditions, and may even leak at the connection due to uneven settlement of the interface; 2) Linear hydraulic drive structures require the use of multiple connecting parts, such as linear guides and connecting rods, and there are distortion problems in the movement patterns of the wave-generating plate and the hydraulic cylinder; 3) The wave pattern of water particles generated by the linear hydraulic drive push plate wave-generating device differs significantly from the actual wave, and the linear hydraulic drive rocking plate wave-generating device involves complex decoupling problems, making the mechanism prone to jamming under hypergravity conditions. Summary of the Invention

[0006] The purpose of this application is to provide a novel hydraulically driven rocker wave generator, which utilizes the inherent anti-centrifugal force characteristics of a servo swing cylinder to solve problems in related technologies, such as large structural deformation under hypergravity leading to jamming or even leakage, and waveform distortion.

[0007] According to a first aspect of the embodiments of this application, a novel hydraulically driven rocker wave generator is provided, comprising:

[0008] The model box has an opening on its side wall and a groove in the middle for placing the foundation of the seabed model.

[0009] The power structure, transmission structure, and wave-generating structure are sequentially connected, with the power structure and transmission structure located inside and outside the openings on the side wall of the model box.

[0010] Furthermore, the power structure includes a servo controller, an angle sensor, an electro-hydraulic servo valve, a pad, and a servo swing cylinder. The angle sensor is used to measure the rotation angle of the servo swing cylinder. The servo controller is used to control the rotation of the drive shaft by controlling the electro-hydraulic servo valve according to the angle. The output end of the servo swing cylinder is connected to the input end of the transmission structure.

[0011] Furthermore, the servo swing cylinder includes a cylinder body, a plunger-type piston rod, and a drive shaft. The plunger-type piston rod is disposed in the cylinder body, and the drive shaft is connected to the input end of the transmission structure.

[0012] Furthermore, the transmission structure includes a gear transmission device, a heavy-duty cylindrical rod, a through-chamber seal, a heavy-duty cylindrical roller bearing, and a cylindrical rod support. The gear transmission device is driven by two drive shafts, and its output end and the heavy-duty cylindrical rod are respectively hinged to the heavy-duty cylindrical roller bearing. The through-chamber seal seals the opening in the model box. The heavy-duty cylindrical rod is supported by the cylindrical rod to resist deformation caused by hypergravity.

[0013] Furthermore, the wave-generating structure includes a wave-generating plate, one end of which is hinged to the output end of the transmission structure.

[0014] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0015] As can be seen from the above embodiments, this application overcomes the problem of large deformation, jamming, or even leakage of linear hydraulic mechanisms under hypergravity by using a swing cylinder; it simplifies the wave-generating connection structure, effectively reducing the mechanism jamming phenomenon caused by uneven deformation of various connecting parts under hypergravity; it uses heavy-duty cylindrical rods directly hinged to rocker plate wave generation, solving the problem of motion waveform distortion caused by complex decoupling of the connecting mechanism, and reducing the overall vibration of the device; it uses angle sensors instead of linear displacement sensors for control feedback, resulting in more intuitive and reliable results; and it places the swing cylinder on the side wall of the model box, reducing the overall height of the model box, which is beneficial to solving the height limit problem of the hypergravity basket.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1This is a three-dimensional view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0019] Figure 2 This is a control principle diagram of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0020] Figure 3 This is a schematic diagram of the power mechanism of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0021] Figure 4 This is a schematic diagram of the transmission mechanism of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0022] Figure 5 This is a schematic diagram of the wave-generating mechanism of a novel hydraulically driven rocker wave-generating device according to an exemplary embodiment;

[0023] Figure 6 This is an isometric view of the upper and lower angles of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0024] Figure 7 This is a top view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment;

[0025] Figure 8 This is a side view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment.

[0026] The reference numerals in the figure include:

[0027] 100. Power structure; 110. Servo controller; 120. Angle sensor; 130. Electro-hydraulic servo valve; 140. Pad block; 150. Servo swing cylinder; 151. Cylinder body; 152. Plunger piston rod; 153. Drive shaft; 200. Transmission structure; 210. Gear transmission device; 220. Heavy-duty cylindrical rod; 230. Through-chamber seal; 240. Heavy-duty cylindrical roller bearing; 300. Wave-making structure; 310. Wave-making plate. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0031] Figure 1 This is a three-dimensional view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 2 This is a control principle diagram of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 3 This is a schematic diagram of the power mechanism of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 4 This is a schematic diagram of the transmission mechanism of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 5 This is a schematic diagram of the wave-generating mechanism of a novel hydraulically driven rocker wave-generating device according to an exemplary embodiment; Figure 6 This is an isometric view of the upper and lower angles of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 7 This is a top view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment; Figure 8 This is a side view of a novel hydraulically driven rocker wave generator according to an exemplary embodiment.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the device may include: a power structure 100, a transmission structure 200 and a wave-generating structure 300 connected in sequence; the power structure 100 is located on the outer side and the transmission structure 200 is located on the inner side.

[0033] As can be seen from the above embodiments, this application integrates the power structure 100 and the transmission structure 200 on the inner and outer sides of the model box, which reduces the total height of the wave-generating device compared with the existing design; the transmission structure 200 is subjected to uniform force and has small deformation under hypergravity, which improves the transmission efficiency and service life of the equipment; the power structure 100 is stable and reliable, solving the problem of jamming under rapid movement of the mechanism.

[0034] Specifically, the power structure 100 includes a servo controller 110, an angle sensor 120, an electro-hydraulic servo valve 130, a pad 140, and a servo swing cylinder 150. The angle sensor 120 is used to measure the rotation angle of the servo swing cylinder 150. The servo controller 110 is used to control the rotation of the drive shaft 153 by controlling the electro-hydraulic servo valve 130 according to the angle. The output end of the servo swing cylinder 150 is connected to the input end of the transmission structure 200.

[0035] Specifically, the servo controller 110 sends a control signal, and the electro-hydraulic servo valve 130 receives the control signal and controls the pressure and flow of the oil pipe, thereby driving the drive shaft 153 of the servo swing cylinder 150 to rotate. The angle sensor 120 monitors the movement of the drive shaft 153 and feeds it back to the control program. The control program adjusts the control signal of the servo controller 110 based on the movement of the drive shaft 153. The use of a hydraulic power system increases the output power of the system, enabling the device to achieve high-frequency, large-amplitude wave generation; the control process forms a closed-loop control, improving the control accuracy of the drive shaft 153's movement.

[0036] In specific implementations, the electro-hydraulic servo valve 130 can be driven by a motor or by hydraulic power. In this embodiment, hydraulic power is used, which can solve the problems of insufficient power and inability to generate high-frequency, large-amplitude waves by motor drive. Since the movement of the drive shaft 153 is high-speed, the control performance requirements of the electro-hydraulic servo valve 130 are extremely high, and a high-performance three-stage electro-hydraulic servo valve 130 is preferred.

[0037] Specifically, the servo swing cylinder 150 includes a cylinder body 151, a plunger-type piston rod 152, and a drive shaft 153. The plunger-type piston rod 152 is disposed inside the cylinder body 151, and the drive shaft 153 is connected to the input end of the transmission structure 200.

[0038] Specifically, the electro-hydraulic servo valve 130 changes the oil pressure and flow rate within the cylinder 151, thereby causing the plunger piston rod 152 to move. This movement is then transmitted to the drive shaft 153 via gears, further driving the gear transmission device 210 in the transmission structure 200. The drive shaft 153 and the transmission structure 200 are designed as gear transmission structures, which improves the force distribution of the mechanism and increases transmission efficiency.

[0039] Specifically, the transmission structure 200 includes a gear transmission device 210, a heavy-duty cylindrical rod 220, a through-hole seal 230, a heavy-duty cylindrical roller bearing 240, and a cylindrical rod support. The gear transmission device 210 is driven by two drive shafts 153. Its output end and the heavy-duty cylindrical rod 220 are respectively hinged to the heavy-duty cylindrical roller bearing 240. The through-hole seal 230 seals the opening of the model box. The heavy-duty cylindrical rod 220 is supported by the cylindrical rod to resist the deformation caused by hypergravity.

[0040] Specifically, the two drive shafts 153 drive the gear transmission device 210 to reciprocate through the gear structure. The gear transmission device 210 drives the heavy-duty cylindrical rod 220 to reciprocate through the heavy-duty cylindrical roller bearing 240, which improves the force distribution, reduces complex transmission losses, and increases the service life of the components.

[0041] Specifically, the electro-hydraulic servo valve 130 controls the plunger piston rod 152 to transmit motion to the drive shaft 153, thereby driving the gear transmission device 210, which solves the problems of jamming and waveform distortion caused by complex decoupling of linear transmission mechanisms.

[0042] Specifically, the wave-generating structure 300 includes a wave-generating plate 310, which is hinged to the output end of the transmission structure 200.

[0043] Specifically, the transmission structure 200 drives the bottom of the wave-generating plate 310 to swing. The lower part of the wave-generating plate 310 is hinged to the heavy-duty cylindrical rod 220, allowing the wave-generating plate 310 to rotate around the heavy-duty cylindrical rod 220 as an axis. This design allows the wave-generating plate 310 to swing around the hinge point at the lower part of the wave-generating plate 310, improving the stability of the mechanism.

[0044] In one embodiment, the wave-generating function is achieved through the following steps: injecting the required liquid into the model box to a predetermined height; the electro-hydraulic servo valve 130 is connected to the oil source at the end of the centrifuge arm; the servo controller 110 controls the electro-hydraulic servo valve 130 in real time to adjust the hydraulic oil flow and pressure according to the rotation angle of the drive shaft 153 measured by the angle sensor 120, thereby driving the plunger piston rod 152 to move; the plunger piston rod 152 is connected to the drive shaft 153 through a gear structure; the two drive shafts 153 drive the gear transmission device 210 to rotate; the gear transmission device 210 drives the heavy-duty cylindrical rod 220 to rotate through the heavy-duty cylindrical roller bearing 240; the heavy-duty cylindrical rod 220 drives the wave-generating plate 310 to swing, thereby causing the liquid in the box to generate waves.

[0045] During implementation, the controller 110 can control the movement of the plunger piston rod 152 according to the test requirements, including amplitude and frequency, and then control the movement of the wave-generating plate 310, ultimately controlling the frequency, amplitude and wavelength of the waves.

[0046] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0047] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A novel hydraulically driven rocker wave-generating device, characterized in that, include: The model box has an opening on its side wall and a groove in the middle for placing the foundation of the seabed model. A power structure, a transmission structure, and a wave-generating structure are sequentially connected, with the power structure and transmission structure located inside and outside the openings on the side wall of the model box. The power structure includes a servo controller, an angle sensor, an electro-hydraulic servo valve, a pad, and a servo swing cylinder. The angle sensor is used to measure the rotation angle of the servo swing cylinder. The servo controller is used to control the rotation of the drive shaft by controlling the electro-hydraulic servo valve according to the angle. The output end of the servo swing cylinder is connected to the input end of the transmission structure. The transmission structure includes a gear transmission device, a heavy-duty cylindrical rod, a through-chamber seal, a heavy-duty cylindrical roller bearing, and a cylindrical rod support. The gear transmission device is driven by two drive shafts, and its output end and the heavy-duty cylindrical rod are respectively hinged to the heavy-duty cylindrical roller bearing. The through-chamber seal seals the opening in the model box. The heavy-duty cylindrical rod is supported by the cylindrical rod to resist the deformation caused by hypergravity.

2. The novel hydraulically driven rocker wave generator according to claim 1, characterized in that, The servo swing cylinder includes a cylinder body, a plunger-type piston rod, and a drive shaft. The plunger-type piston rod is disposed in the cylinder body, and the drive shaft is connected to the input end of the transmission structure.

3. The novel hydraulically driven rocker wave generator according to claim 1, characterized in that, The wave-generating structure includes a wave-generating plate, one end of which is hinged to the output end of the transmission structure.

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