Multiple rotating shafts in a wave power generation system

Abstract

To provide a plurality of rotating shafts for a wave power generation system with a strong and simple structure that utilizes the up and down movement of seawater. [Solution] By installing coil springs of different strengths at the bottom of each rotating shaft (4) that rotates repeatedly in forward and reverse directions, and at the top and bottom of the intermediate guide, it is possible to keep other rotating shafts running during the stoppage that occurs when reversing rotation, and to prevent periods of rotation stoppage due to overlapping stoppages that occur when reversing rotation. The continuous rotation generated by the rotation of multiple rotating shafts of this device is converted into rotation in the same direction by a rotation conversion device, realizing motor rotation.

Description

[Technical Field]

[0001] The present invention relates to a wave power generation system that converts the up and down motion of waves into continuous rotational motion. [Background technology]

[0002] There is a well-known wave power generation system with a spiral groove on the rotating shaft, as disclosed in Utility Model Registration No. 3233257 (Patent Document 1). In the rotating device described therein, multiple rotating shafts are installed vertically on the seabed, and the rotating shafts are rotated by the spiral grooves on the rotating shafts matching with the protrusions inside the universal joints that are linked to floats that move up and down with the waves. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3239348 [Patent Document 2] Utility Model Registration No. 3233257 Summary of the Invention [Problem to be solved by the invention]

[0004] The wave power generation device described in Patent Document 1 does not provide sufficient explanation of the interior of the universal joint, and the relationship with Patent Document 2, which was used as reference, was unclear. In Patent Document 1, the rotation axis is rotated by the up and down movement of the waves, just like in Patent Document 2, but there was an issue that the rotation stop times that occur when the waves reverse overlap on each rotation axis, preventing continuous rotational movement. Means to solve the invention

[0005] This invention solves the problem by installing coil springs of different strength at the bottom of each rotating shaft and at the top and bottom of the guide mechanism inside the universal joint in order to create a time difference in rotation, and by installing a new cubic frame fixed on the platform raft of Patent Document 1, gluing caster-shaped bearings inside the frame, and moving the universal joint up and down through it.

[0006] This invention clarifies the function and internal structure of the universal joint in Patent Document 1, and by installing coil springs of different strength at the bottom of each rotating shaft and at the top and bottom of the universal joint's rotary guide, it is possible to stagger the timing of the reversal of each rotating shaft, and during the rotation stoppage that occurs during reversal, the rotation of other rotating shafts allows continuous rotation after passing through the one-way rotation device. [Brief explanation of the drawings]

[0007] [Figure 1] This is an overall view of the rotating shaft of the present invention, excluding the cubic frame and guide frame around the universal joint and the caster-shaped bearing. [Figure 2] FIG. 2 is a detailed view of the periphery of the universal joint in FIG. 1. [Figure 3] FIG. 2 is an enlarged view of the circled portion C in FIG. 1. [Figure 4] FIG. 2 is an enlarged view of the circled portion D in FIG. 1. [Figure 5] This is the cross section between AB in Figure 2 and its surroundings. DETAILED DESCRIPTION OF THE INVENTION

[0008] In order to achieve smooth and continuous rotation by the one-way rotation device, a fixed base (3) is laid on the seabed, a fixed support (2) is erected vertically through the base (3), there are multiple rotation axes (4 in Figures 1 and 2) that penetrate the interior of the universal joint (1 in Figure 1), the rotation axis (4) is placed on top of the coil spring B (8) without being fixed, is perpendicular to the base, and its lower protrusion is long and thick enough to always fit within the upper central diameter of the coil spring B (8) while not interfering with the expansion and contraction of the coil spring B, the middle part of the rotation axis (4) penetrates the universal joint (1), and the upper part has the role of turning the gear of Patent Document 1, the coil spring B is an independent entity that connects the base and the lower part of the rotation axis, and since the protrusion from the base is always within the central diameter of the coil spring B, the lower part of the coil spring B has a form surrounded by a frame fixed to the base. Within the universal joint (1), a fixed frame (5) fixed within the universal joint surrounds the rotating shaft (4) to prevent the attachment of marine organisms such as shellfish. The fixed frame (5) moves up and down along with the universal joint (1). Coil springs A (7) are installed at the top and bottom of the fixed frame (5), with a guide mechanism (6) sandwiched between the upper and lower coil springs A. A rotating shaft passes through the center of the coil spring A and the guide mechanism (6). The rotating shaft passing through the guide mechanism (6) rotates with the up and down movement of the guide mechanism, with a protrusion (14) inside the guide mechanism matching with a 65- to 70-degree spiral groove engraved on the rotating shaft. Two protrusions (14) inside the guide mechanism (6) are located at symmetrical positions within the guide mechanism, matching with the spiral groove on the rotating shaft to rotate the rotating shaft. The platform raft (15), like the platform raft in Patent Document 2, is linked to the movement of the float (13). The cubic frame (12) is fixed on the platform raft (15), and the caster-shaped bearing (11) is glued to the cubic frame (12). The upper and lower parts of the universal joint contact the bearing parts, causing the universal joint to move up and down along with the vertical movement of the cubic frame. The guide device sandwiched between the coil spring A does not move in the same way as the universal joint and fixed frame due to the influence of the coil spring A.In Patent Document 1, the guide posts and lattice structure of Patent Document 2 are removed, and a new universal joint is fixed directly to the platform raft of Patent Document 2, with the rotation axis rotating above and below a protrusion located on the inner basin of the universal joint. However, in this device, the universal joint (1) is supported by upper and lower rings surrounding the support posts with legs extending from four upper and four lower points of the universal joint, and a guide frame (9) is provided to guide the universal joint up and down along the support posts. The guide frame and universal joint (1) of this device function as the inner basin of Patent Document 1, and a caster-shaped bearing (11) attached to a cubic frame (12) fixed to the platform raft (15) functions as the universal joint of Patent Document 1. The caster-shaped bearing of this device allows the universal joint (1) of this device to move up and down along the support posts (2) without being affected by the complex movement of waves. When the caster-shaped bearing (11) moves up and down with the up and down movement of the float (13), stoppers (10) are attached to the top and bottom of the universal joint to prevent it from coming off the universal joint due to the momentum. Coil springs A and B with different strengths are used to vary the rotational opportunity of each rotating shaft, and this configuration aims to stagger the stopping time that occurs during reverse rotation.

[0009] 1 Universal joint 2 pillars 3 Foundation 4 rotation axes 5 Fixed Frame 6 Information machine 7 Coil spring A 8 Coil spring B 9 Information frame 10 Stopper 11 Bearings 12 cube frames 13 Float 14 protrusions 15 rafts

Claims

[Claim 1] A wave power generation system with multiple rotating shafts, characterized by: multiple rotating shafts that repeatedly rotate forward and backward, installed vertically on the seabed; independent coil springs of different strengths installed at the bottom of each rotating shaft to create a time difference in rotation for each rotating shaft; a cubic frame fixedly installed on a platform raft directly connected to a float that moves up and down with the up and down movement of the waves, caster-shaped bearings glued inside the frame, through which a universal joint moves up and down; protrusions arranged inside a guide mechanism installed inside the universal joint match with 65 to 70 degree grooves in the rotating shaft, converting the up and down movement of the universal joint into rotational movement of the rotating shaft; and coil springs installed above and below the guide mechanism, which operate other rotating shafts during the stoppage that occurs when the rotation reverses, thereby smoothing the rotation in the same direction generated from the rotation of the multiple rotating shafts via a rotation conversion device.

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