Power generation equipment

Abstract

The objective is to provide a power generation device that simplifies the drive system, obtains stable rotational force and rotational speed, and has a configuration that allows for easy adjustment of the flywheel. [Solution] The power generation device 1 comprises a housing 2, a motor 3 having a first shaft 11, a flywheel 4 having a second shaft 12, a generator 5 having a third shaft 13, and a transmission device 6 that transmits the rotational force of the second shaft 12 to the third shaft 13, with a rotating body 3a attached to the first shaft 11. The flywheel 4 has a ring-shaped weight 7 that is detachably attached to the main body 4a. The main body 4a has a protruding portion 4b, which is a part of a disc shape that protrudes. The rotating body 3a comes into contact with the protruding portion 4b, causing the flywheel 4 to rotate, and the rotational force is transmitted to the third shaft 13 via the transmission device 6, causing the generator 5 to generate electricity.

Description

Technical Field

[0001] The present invention relates to a power generation device provided with a flywheel.

Background Art

[0002] Conventionally, power generation devices using flywheels have been proposed (Patent Document 1: Japanese Unexamined Patent Application Publication No. 2011-259561, Patent Document 2: Japanese Unexamined Patent Application Publication No. 2017-106431, Patent Document 3: Japanese Unexamined Patent Application Publication No. 2024-090270).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the prior art described in Patent Documents 1 to 3, due to the structure of uniformly applying external energy to a disk and rotating it, the drive system is complex. In addition, it is necessary to adjust the disk weight according to the energy accumulated in the disk. However, a disk made of casting, forging, etc. is difficult to adjust the flywheel, and when it is desired to further increase the energy accumulated in the flywheel, there are problems such as the need for new manufacturing equipment.

Means for Solving the Problems

[0005] In view of the above circumstances, the present invention aims to provide a power generation device having a configuration capable of obtaining a stable rotational force and rotational speed while simplifying the drive system and facilitating the adjustment of the flywheel.

[0006] The above problem is solved by the solution disclosed below as one embodiment.

[0007] The power generation device according to the present invention comprises a housing, a motor having a first shaft, a flywheel having a second shaft, a generator having a third shaft, and a transmission device for transmitting the rotational force of the second shaft to the third shaft, wherein a rotating body is attached to the first shaft, the flywheel has a main body and a ring-shaped weight detachably attached to the main body, the main body has a protruding portion in which a part of the disc shape protrudes, and the rotating body contacts the protruding portion and the flywheel rotates, thereby transmitting the rotational force to the third shaft via the transmission device and generating electricity in the generator. The main body has first through holes formed at a predetermined pitch in the circumferential direction, the weights have second through holes formed and are arranged on both sides of the main body, the main body and the weights are detachably fastened together by fastening members via the first and second through holes, the internal angle at which a first line passing through the tip of the protrusion in the rotational direction and the center of the second axis intersects with a second line passing through the rear end of the protrusion in the rotational direction and the center of the second axis is set to be between 30 degrees and 60 degrees, the weights consist of a first weight and a second weight that is heavier than the first weight, the second weight is arranged in the area that forms the outer angle at which the first and second lines intersect, and is arranged only at a first position near the tip and a second position near the rear end. It is characterized by the following.

[0008] This configuration allows for stable rotational force and speed, as well as easy adjustment of the flywheel. Therefore, it is easy to store the desired energy.

[0009] As an example, the transmission section is an endless belt, and the main body has fixing members attached to first through holes formed at a predetermined pitch in the circumferential direction, and the main body and the weight are detachably connected and fixed by the fixing members. With this configuration, kinetic energy can be easily transmitted efficiently. Furthermore, since the weight can be easily attached and detached, it is easy to accommodate a configuration that can store a desired amount of energy. Therefore, a configuration with excellent assembly workability and maintainability can be achieved.

[0010] As an example, the main body has first through holes formed at a predetermined pitch in the circumferential direction, and the weights have second through holes formed and are arranged on both sides of the main body. The main body and the weights are detachably fastened together by fastening members via the first and second through holes. With this configuration, it is easy to adjust the arrangement of the weights to obtain a desired amount of energy storage. Thus, versatility can be easily increased.

[0011] Also,This configuration makes it easy to adjust the arrangement of weights to obtain the desired amount of energy stored. Therefore, it is easy to increase its versatility.

[0012] Also, With this configuration, it is easy to reach the desired amount of energy stored by utilizing gravity in addition to inertial force. [Effects of the Invention]

[0013] According to the present invention, a power generation device can be realized that can obtain stable rotational force and rotational speed, and has a configuration that allows for easy adjustment of the flywheel. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 is a perspective view showing the external appearance of a power generation device according to an embodiment of the present invention. [Figure 2] Figure 2 is a schematic diagram showing the configuration of the power generation device of this embodiment. [Figure 3] Figure 3A is a schematic front view showing the first example of a flywheel relating to the power generation device of this embodiment. Figure 3B is a schematic side view showing the arrangement configuration of the flywheel shown in Figure 3A. [Figure 4] Figure 4A is a schematic front view showing the main body of the flywheel shown in Figure 3A. Figure 4B is a schematic front view showing the weight of the flywheel shown in Figure 4A. [Figure 5] Figure 5A is a schematic front view showing a second example of a flywheel related to the power generation device of this embodiment. Figure 5B is a schematic side view showing the arrangement configuration of the flywheel shown in Figure 5A. [Modes for carrying out the invention]

[0015] Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, the power generation device 1 of the present embodiment includes a housing 2, a motor 3 having a first shaft 11, a flywheel 4 having a second shaft 12, a generator 5 having a third shaft 13, and a transmission 6 that transmits the rotational force of the second shaft 12 to the third shaft 13. A rotating body 3a is attached to the first shaft 11. The flywheel 4 has an annular weight 7 detachably attached to the main body 4a. The main body 4a has a protruding portion 4b with a part of a disc shape protruding. When the rotating body 3a contacts the outer peripheral surface 4f of the protruding portion 4b and the flywheel 4 rotates, the rotational force is transmitted to the third shaft 13 via the transmission 6, and the generator 5 generates electricity. In all the drawings for explaining the embodiments, members having the same function are denoted by the same reference numerals, and repeated explanations may be omitted.

[0016] The housing 2 has a base 2a, a frame 2b to which an electric motor 3 is attached, a bearing 2c that pivotally supports the second shaft 12, and a shaft support 2d to which the bearing 2c is attached. The base 2a has a generator 5 attached thereto. The housing 2 has a controller 8 and a battery 9 arranged therein.

[0017] The rotating body 3a has a tire 3c fitted into a wheel 3b, and the wheel 3b is attached to the first shaft 11. According to this configuration, the rotational force of the first shaft 11 can be efficiently transmitted to the second shaft 12. Here, the outer diameter of the rotating body 3a is smaller than the outer diameter of the flywheel 4. Note that the configuration is not limited to the above.

[0018] The flywheel 4 accumulates kinetic energy while making the rotational force of the second shaft 12 uniform. The flywheel 4 is made of iron, a magnesium alloy, an aluminum alloy, etc., and is formed by casting, forging, laser processing, etc.

[0019] The transmission device 6 has a drive pulley 6a attached to the second shaft 12, a driven pulley 6b attached to the third shaft 13, and an endless belt 6c spanned between the drive pulley 6a and the driven pulley 6b. According to this configuration, the rotational force of the second shaft 12 can be efficiently transmitted to the third shaft 13. Here, the outer diameter of the driven pulley 6b is smaller than the outer diameter of the drive pulley 6a. Note that the present invention is not limited to the above configuration. For example, a transmission device in which a chain is spanned between two sprockets can also be used.

[0020] The first axis P1 passing through the first shaft 11 and the second axis P2 passing through the second shaft 12 are parallel to each other. According to this configuration, the rotational force of the first shaft 11 can be efficiently transmitted to the second shaft 12. The second axis P2 passing through the second shaft 12 and the third axis P3 passing through the third shaft 13 are parallel to each other. According to this configuration, the rotational force of the second shaft 12 can be efficiently transmitted to the third shaft 13.

[0021] The battery 9 includes a first battery 9a that supplies power to the motor 3 and a second battery 9b that stores the power generated by the generator 5. Here, the capacity of the first battery 9a is smaller than the capacity of the second battery 9b. Note that the present invention is not limited to the above configuration. For example, one battery 9 can be used to switch between power supply to the motor 3 and power storage in the second battery 9b. For example, it is also possible to supply power to the motor 3 while storing power in the second battery 9b using one battery 9.

[0022] FIG. 2 is a configuration diagram schematically showing the configuration of the power generation device 1 of the present embodiment. The power generation device 1 includes a controller 8 that operates by power supply from the first battery 9a. The controller 8 controls the drive of the motor 3 and the power generation of the generator 5. Here, the rated output of the motor 3 is smaller than the rated output of the generator 5.

[0023] Subsequently, each example of the flywheel 4 according to the present embodiment will be described below.

[0024] [First Example] Figure 3A is a schematic front view showing the flywheel 4 of the first example. Figure 3B is a schematic side view showing the arrangement of the flywheel 4. Figure 4A is a schematic front view showing the main body 4a of the flywheel 4. Figure 4B is a schematic front view showing the weight 7 of the flywheel 4. The base 2a is installed on the ground surface E1. The shaft support 2d is erected perpendicular to the base 2a, and the second shaft 12 is pivotally supported by the bearing 2c so as to be parallel to gravity.

[0025] The main body 4a has first through holes 4e formed at a predetermined pitch in the circumferential direction. In the figure, 12 first through holes 4e are formed. The weight 7 has a second through hole 7e formed on its axis. The weight 7 is positioned on both sides of the main body 4a. The main body 4a and the weight 7 are detachably fastened together by fastening members 7c via the first through holes 4e and the second through holes 7e. For example, the fastening members 7c are bolts and nuts. For example, the first through holes 4e have internal threads and the fastening members 7c are bolts. However, the configuration is not limited to the above.

[0026] The flywheel 4 rotates in the rotational direction ccw shown in the figure around the second axis P2 of the second shaft 12. The interior angle K1 at which the first line Q1, passing through the tip 4c of the projection 4b and the center of the second shaft 12, intersects with the second line Q2, passing through the rear end 4d of the projection 4b and the center of the second shaft 12, is set to be between 30 and 60 degrees. When the interior angle K1 is 30 degrees or more, the rotational force of the first shaft 11 is transmitted to the flywheel 4, making it easier for the flywheel 4 to rotate. When K1 is 60 degrees or less, the flywheel 4 is more likely to maintain its rotation due to inertia.

[0027] The weight 7 consists of a first weight 7a and a second weight 7b that is heavier than the first weight 7a. Here, the second weight 7b is made by stacking two first weights 7a in the axial direction. This reduces the number of parts. However, the configuration is not limited to the above. For example, three first weights 7a can be stacked in the axial direction to form the second weight 7b. For example, dedicated first weights 7a and dedicated second weights 7b can also be used.

[0028] The second weight 7b is positioned in the area that forms the outer angle K2 where the first line Q1 and the second line Q2 intersect, and is positioned only at a first position close to the tip 4c and a second position close to the rear end 4d. This makes it easier to accumulate rotational force in the flywheel 4 through the synergistic effect of gravity and inertial force.

[0029] [Example 2] Figure 5A is a schematic front view showing a second example of a flywheel 14 related to the power generation device of this embodiment. Figure 5B is a schematic side view showing the arrangement of the flywheel 14 shown in Figure 5A. The second example has a protruding portion 14b in the shape of a ring with a part of it removed. The protruding portions 14b are arranged on both sides of the disc-shaped body 14a and are connected and fixed to the body 14a by fastening members. With this configuration, the size of the body 14a can be easily changed, which further increases the degree of freedom in the energy storage capacity of the flywheel 14.

[0030] The power generation device 1 of this embodiment provides a power generation device 1 that can obtain stable rotational force and rotational speed, and also allows for easy adjustment of the flywheel 4 (14). With this configuration, a large amount of power can be extracted from a large AC generator using a small DC motor with low power consumption. The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the present invention. [Explanation of symbols]

[0031] 1. Power generation equipment 2 housing, 2a base, 2b frame, 2c bearing, 2d axis support 3 motor, 3a rotating body 4 flywheel, 4a main body, 4b protrusion, 4c tip side, 4d rear end side, 4e first through hole, 4f outer circumferential surface 5 Generators 6. Transmission device, 6a Drive pulley, 6b Driven pulley, 6c Belt 7 weights, 7a 1st weight, 7b 2nd weight, 7c fastening member, 7e 2nd through hole 8 controllers 9 batteries, 9a First battery, 9b Second battery 11 1st axis 12 2nd axis 13 3rd axis K1 Interior Corner K2 Outside P1 1st axis P2 2nd axis P3 3rd axis Q1 1st line Q2 2nd line

Claims

1. The system comprises a housing, a motor having a first shaft, a flywheel having a second shaft, a generator having a third shaft, and a transmission device that transmits the rotational force of the second shaft to the third shaft, with a rotating body attached to the first shaft, the flywheel having a main body and a ring-shaped weight detachably attached to the main body, the main body having a protruding portion where a part of the disc shape protrudes, the rotating body contacts the protruding portion and the flywheel rotates, the rotational force is transmitted to the third shaft via the transmission device and the generator generates electricity. The main body has first through holes formed at a predetermined pitch in the circumferential direction, the weight has second through holes formed and is arranged on both sides of the main body, and the main body and the weight are detachably fastened together by fastening members via the first and second through holes. The power generation device is characterized in that the internal angle at which a first line passing through the tip of the protruding portion in the direction of rotation and the center of the second axis intersects with a second line passing through the rear end of the protruding portion in the direction of rotation and the center of the second axis is set to be between 30 degrees and 60 degrees, the weight consists of a first weight and a second weight that is heavier than the first weight, the second weight is positioned in the area that forms the external angle at which the first line and the second line intersect, and is positioned only at a first position close to the tip and a second position close to the rear end.

2. The power generation device according to claim 1, wherein the transmission device has a drive pulley mounted on the second shaft, a driven pulley mounted on the third shaft, and a belt stretched between the drive pulley and the driven pulley, and the rotating body has a tire fitted onto a wheel, and the wheel is mounted on the first shaft.

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