JP2012041971A - Step-up gear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a step-up gear capable of obtaining a high output at low-speed rotation.SOLUTION: The step-up gear includes an outer driving gear 1 which receives energy and rotates and an inner main shaft gear 2 which transmits a rotative force of the outer driving gear to a rotator, wherein intermediate transmission gears 3A, 3B are arranged between the outer driving gear and the inner driving main shaft gear so as to be capable of biting the outer driving gear 1 and the inner main shaft gear 2, the rotative force of the outer driving gear is stepped up with the intermediate transmission gear and the inner main shaft gear and the rotator is caused to rotate with a stepped-up output. The respective gears are formed in ring shapes having diameters different from each other, respectively have biting face and non-biting face on the opposite inner peripheral and outer circumferential faces of respective gears, teeth parts 5, 9a, 9b, 11a, 11b, 12 which assume wave shapes are formed on opposite biting faces by every gear, the biting state of respective opposite teeth parts is provided, the rotative force of the outer driving gear is transmitted to the inner main shaft gear via respective teeth parts, at the same time, guide rollers 13, 14, 15 are inserted between the opposed non-biting faces of respective gears and the opposed teeth parts are bitten with each other in the pressing direction of a guide roller.

Description

  The present invention relates to a speed increaser that is used to increase rotational force in, for example, wind power generation / hydropower generation, electric vehicles, blowers, and the like, and more particularly, speed increase using a gear that exhibits a unique wave shape. Related to the machine.

  In recent years, wind power generation and hydroelectric power generation using natural energy have attracted attention for the purpose of improving the global environment by reducing carbon dioxide.

  In wind power generation, the blades are rotated using the kinetic energy of the wind to drive the generator. Usually, it is rotated using a multi-shaft gear type or planetary gear type gearbox. The speed is increased. Hydroelectric power generation uses a kinetic energy of water to rotate a water turbine to drive a generator. However, a similar speed increaser is used to increase the rotation speed.

  However, in order to increase the output of wind power generation, it is necessary to increase the rotation speed of the blade, but if this is done in the city center or residential area, a large mechanical noise will be generated in the speed increaser part, There is a risk of noise problems, and hydroelectric power generation requires river water volume and momentum to generate a large amount of power.

  The present invention has been developed in view of such a conventional situation, and the invention according to claim 1 is directed to an outer drive gear that rotates by receiving energy, and an inner main shaft that transmits a rotational force of the outer drive gear to a rotating body. A plurality of intermediate transmission gears that can be engaged between the outer drive gear and the inner main shaft gear, and the rotational force of the outer drive gear is increased by the intermediate transmission gear and the inner main shaft gear. The speed increasing device for rotating the rotating body with the increased rotational output, wherein each gear is formed in a ring shape having different diameters and meshes with the inner and outer peripheral surfaces facing each gear. A tooth portion having a surface and a non-occlusal surface is formed continuously on each occlusal surface facing each gear, and an occlusal state is obtained by surface contact of each tooth portion facing each other. When the rotational force of the outer drive gear is transmitted to the inner main shaft gear via the corrugated teeth, , And interposed a guide roller between the non-occlusal surface of the opposing gears, characterized in that to bite the corrugated toothing facing each other in the pressing direction of the guide rollers.

  According to a second aspect of the present invention, on the premise of the first aspect, a non-slip ring similar to a wave-shaped tooth portion is incorporated between the opposing occlusal surfaces of the respective gears.

  The invention according to claim 3 is based on claims 1 and 2, and the guide rollers interposed between the non-occlusion surfaces of the gears are alternately arranged at the inner and outer stages. It is characterized by being reversed.

  According to a fourth aspect of the present invention, on the premise of the first to third aspects, a gear anti-shake means is provided at the boundary between the occlusal surface and the non-occlusal surface of each gear.

  Therefore, according to the first aspect of the present invention, in the process of transmitting the rotational force from the outer drive gear to the inner main shaft gear through the intermediate transmission gear, the opposing wavy tooth portions of each gear are in surface contact. Since the rotational force is transmitted by being occluded in a state, the contact area is larger and the transmission surface is increased to several places as compared with the conventional one, and the rotational force can be distributed and transmitted. For this reason, for example, the rotational force received by the first outer drive gear is at least transmitted to the intermediate transmission gear and the inner main shaft gear that are gradually reduced in diameter as the rotational force is arranged inside, so that the speed increases. A rotating body such as a generator can be rotated with the increased rotational output.

  Moreover, since each gear rotates and contacts from surface to surface, noise and vibration can be effectively suppressed.

  In the invention according to claim 2, since the non-slip ring is incorporated between the occlusal surfaces facing each gear, it is possible to rotate at a high speed with a light force and reliably prevent noise problems.

  In the invention according to claim 3, since the guide roller is alternately reversed in each of the inner and outer steps, the guide roller is dispersed without concentrating the portion transmitting the force. The speed can be increased to ensure stable rotation.

  In the invention according to claim 4, since the anti-shake means is provided at the boundary between the occlusal surface and the non-occlusal surface of each gear, when the rotational speed is increased by rotating, the vibration and vibration of each gear are suppressed. Can ensure stable rotation.

It is the schematic which shows the principle of the gearbox which concerns on the Example of this invention. It is the schematic which shows the same speed increaser in cross section. It is explanatory drawing which shows the relationship between the wave-shaped tooth | gear part of each gear, and a guide roller. It is principal part explanatory drawing explaining the relationship between an outer side drive gear, a 1st intermediate transmission gear, and a 1st guide roller. It is principal part sectional drawing which shows the generator in which a gearbox is used. It is principal part sectional drawing which shows the generator from another direction. (A) is a principal part sectional view showing the relationship between the permanent magnet and the coil winding when the inner spindle gear is stopped, and (B) is a principal part sectional view showing the relationship between the permanent magnet and the coil winding when starting the inner spindle gear. FIG. It is a principal part expanded explanatory view explaining the occlusion state of an outer side drive gear and a 1st intermediate | middle transmission gear.

  The present invention includes an outer drive gear that rotates by receiving energy, and an inner main shaft gear that transmits a rotational force of the outer drive gear to a rotating body, and a plurality of intermediate transmissions between the outer drive gear and the inner main shaft gear. A speed increasing device that disposes the gears so as to be able to engage with each other, increases the rotational force of the outer drive gear with the intermediate transmission gears and the inner main shaft gear, and rotates the rotating body with the increased rotational output. As a premise, each gear is formed in a ring shape having a different diameter, has an occlusal surface and a non-occlusion surface on the inner and outer peripheral surfaces facing each gear, and has a wave shape on the occlusal surface facing each gear. The tooth portions exhibiting the following are formed continuously, the occlusal state is obtained by the surface contact of the respective corrugated tooth portions facing each other, and the rotational force of the outer drive gear is applied to the inner main shaft gear via the corrugated tooth portions. And a guide roller is interposed between the opposing non-occlusion surfaces of each gear. , By occlusion of the corrugated toothing facing each other in the pressing direction of the guide rollers, it is an ¥ high output in low-speed rotation.

  Hereinafter, the present invention will be described in detail with reference to the preferred embodiments shown in the drawings. The speed increaser according to the embodiments has been developed for wind power or hydraulic power generators and is shown in FIGS. 1 and 2. As described above, one outer drive gear 1 that rotates by receiving the kinetic energy of wind and water, and one inner main shaft that rotates the generator 22 with a rotational output increased in speed and connected to the generator 22 side described later. A gear 2 and two intermediate transmission gears 3A and 3B disposed so as to be able to be engaged between the outer drive gear 1 and the inner main shaft gear 2 are provided. The gears 1, 3A, 3B, and 2 From the inside toward the inside, it has a ring shape whose diameter becomes smaller (70%) in order. Although not specifically shown, a plurality of blades are attached to the outer periphery of the outer drive gear 1 in the case of wind power, and a water turbine is attached directly or via an outer frame in the case of hydraulic power.

  As shown in FIGS. 3 and 4, with respect to each of the gears described above, the outer drive gear 1 is continuously defined with the occlusal surface 4a and the non-occlusion surface 4b in parallel only on the inner peripheral surface thereof. Then, a wave-shaped tooth portion 5 having a gentle curve is continuously formed on the former occlusal surface 4a, and a guide groove 6 of a first guide roller 13 to be described later is continuously formed on the latter non-occlusal surface 4b. It is the composition to do.

  Of the two intermediate transmission gears 3A and 3B, the first intermediate transmission gear 3A has an occlusal surface 7a and 8a and an unoccluded surface 7b and 8b parallel to the inner and outer peripheral surfaces as shown in the figure. The above-mentioned corrugated teeth 9a and 9b are continuously formed on the inner and outer occlusal surfaces 7a and 8a, and the inner and outer non-occlusal surfaces 7b and 8b are described later. The guide grooves 10a and 10b of the first guide roller 13 and the second guide roller 14 are continuously formed, and although not specifically shown for the second intermediate transmission gear 3B, the first intermediate transmission gear 3A Similarly, the occlusal surface and the non-occlusal surface are continuously defined in parallel on the inner and outer peripheral surfaces, and the above-described wave-shaped tooth portions 11a and 11b are continuously formed on the inner and outer occlusal surfaces. The guide groove of the 2nd guide roller 14 and the 3rd guide roller 15 which are formed, and is mentioned later on each inside / outside non-occlusion surface is continued. And has a configuration to be formed.

  For the final inner main shaft gear 2, a similar occlusal surface (not shown) and a non-occlusion surface (not shown) are continuously defined in parallel only on the outer peripheral surface thereof, The wavy tooth portion 12 is continuously formed, and a guide groove (not shown) of a third guide roller 15 to be described later is continuously formed on the non-occlusion surface. 4 (a), (b), (c), and (d) are cross-sectional views corresponding to (a), (b), (c), and (d) in FIG. .

  Accordingly, the tooth portion 5 formed on the inner peripheral occlusal surface 4a of the outer drive gear 1 and the tooth portion 9a formed on the outer peripheral occlusal surface 7a of the first intermediate transmission gear 3A are engaged, and the first intermediate transmission gear 3A. The tooth portion 9b formed on the inner peripheral occlusal surface 8a and the tooth portion 11a formed on the outer peripheral occlusal surface of the second intermediate transmission gear 3B are engaged with each other and formed on the inner peripheral occlusal surface of the second intermediate transmission gear 3B. The tooth portion 11b thus formed and the tooth portion 12 formed on the outer peripheral occlusion surface of the inner main shaft gear 2 are engaged with each other to increase the rotational force.

  However, as described above, the gears 1, 3 A, 3 B, and 2 have a diameter of 70% in order, and the tooth portions cannot be engaged with each other over the entire circumference. In this case, the first guide is between the guide groove 6 formed on the inner peripheral non-engagement surface 4b of the outer drive gear 1 and the guide groove 10a formed on the outer peripheral non-engagement surface 7b of the first intermediate transmission gear 3A. A roller 13 is interposed between the guide groove 10b formed on the inner peripheral non-engagement surface 8b of the first intermediate transmission gear 3A and the guide groove formed on the outer peripheral non-engagement surface of the second intermediate transmission gear 3B. A second guide roller 14 is rotatably interposed between the guide groove formed on the inner peripheral non-engagement surface of the second intermediate transmission gear 3B and the guide groove formed on the outer peripheral non-engagement surface of the inner main shaft gear 2. Each guide roller is provided with a third guide roller 15 rotatably. 3, 14, 15 corrugated toothing 5-9a facing in the pressing direction of, 9b-11a, and has a configuration to bite at a portion thereof 11b-12 to each other.

  The diameters of the guide rollers 13, 14, 15 at each stage are determined according to the distance between the gears 1, 3 A, 3 B, 2, but the guide rollers 13, 14, 15 are 3 in an open angle of about 120 °. The guide rollers 13, 14, 15 are connected to each other individually via a connecting arm 16, and are integrally fixed to each other via a common holding bracket 17. The positions are alternately reversed. Accordingly, the gears 1, 3A, 3B, and 2 having different diameters can smoothly and stably rotate.

  That is, when transmitting the rotational force of the outer drive gear 1 to the first intermediate transmission gear 3A and from the first intermediate transmission gear 3A to the second intermediate transmission gear 3B, the teeth on the opposite side of the guide roller Since the occlusal bite transmits the force, the position where the force is transmitted (the occlusal position) does not concentrate on one side as in the case where the guide roller is concentrated and attached in one direction. Therefore, in order to bring the entire center of gravity to the center, the guide rollers 13, 14, and 15 are alternately provided.

  Further, in the present embodiment, the rubber having a shape similar to the wave-shaped tooth portions 5, 9a, 9b, 11a, 11b, and 12 between the facing occlusal surfaces of the gears 1, 3A, 3B, and 2 described above. The structure which prevents the noise problem by incorporating the non-slip ring 18 made of is also employed (see FIG. 8).

  In addition to this, as shown in FIG. 4, uneven engagement type displacement prevention means 19 a, 19 b are formed at the boundary between the occlusal surface and the non-occlusion surface of each gear 1, 3 A, 3 B, 2 to rotate and rotate. When the number is increased, a configuration that can effectively suppress the vibration and vibration of the gears 1, 3 A, 3 B, and 2 to ensure stable rotation is also employed. The anti-shake means 19a and 19b are shown only in the outer drive gear 1 and the first intermediate transmission gear 3A, but are also provided in the second intermediate transmission gear 3B and the inner main shaft gear 2 in the same manner.

  In FIG. 2, reference numeral 20 denotes a bearing case for the inner main shaft gear 2, which rotates together with the main shaft connecting shaft 21 of the inner main shaft gear 2, 22 is a generator which will be described later, and 23 is a fixed support bracket 24. A fixed protective frame 25 is a power generation coil support fitting constituting the generator 22, and is fixed to the stainless steel pipe 26. The fixed support fitting 24 is attached to the non-rotating stainless steel pipe 26. Reference numeral 27 denotes a decorative board, and the decorative board 27 is held by the holding metal 17 described above.

  As shown in FIGS. 5 and 6, the above-described generator 22 fixes a plurality of permanent magnets 28 at regular intervals on the outer peripheral surface of the bearing case 20 that rotates together with the main shaft coupling shaft 21 of the inner main shaft gear 2. At the same time, a plurality of coil windings 29 facing the permanent magnets 28 are fixed to the inner surface of the power generation coil support bracket 25, while the permanent magnets 28 are deformed through leaf springs 30 that can deform the bearing case 20 side. When the rotation of the inner main shaft gear 2 is stopped, each permanent magnet 28 is attracted to the bearing case 20 side by the force of the leaf spring 30 to increase the distance from the corresponding coil winding 29, When the inner main shaft gear 2 is rotating, each permanent magnet 28 is moved to the coil winding 29 side by deformation of the leaf spring 30 so that the distance from the corresponding coil winding 29 is reduced.

  Therefore, when the rotation of the inner main shaft gear 2 is stopped under the generator 22, as shown in FIG. 7A, each permanent magnet 28 is supported by the elastic force obtained from the linear shape of the leaf spring 30 described above. Since it is drawn to the case 20 side and the interval X with the corresponding coil winding 29 is widened, the magnetic field range with the corresponding coil winding 29 is thereby released, and no power is generated.

  On the contrary, when the inner main shaft gear 2 rotates and the rotational speed increases, this time, as shown in FIG. 7B, centrifugal force is applied to each permanent magnet 28 and the permanent magnet 28 is pulled outward. Accordingly, the leaf spring 30 is elastically deformed into a substantially trapezoidal shape, and each permanent magnet 28 is automatically moved to the corresponding coil winding 29 side, and the distance Y from the corresponding coil winding 29 is reduced. Since 28 and 29 enter the magnetic field, power can be generated stably.

  Therefore, when such a generator is operated using the above-described speed increaser, the outer drive gear 1 rotates in the same direction together when the blade is rotated by wind power or the water turbine is rotated by hydraulic power. However, the rotation of the outer drive gear 1 obtains the pressing action of the first guide roller 13, and the wave-shaped tooth portion 5 formed on the inner peripheral occlusal surface 4a and the outer periphery of the first intermediate transmission gear 3A. The wavy tooth portion 9a formed on the occlusal surface 7a is engaged with a part thereof to transmit a rotational force. In this case, as shown in FIG. 8, the tooth portions 5 and 9 a start to engage with each other in the surface contact state in the pressing direction of the guide roller 13, and then the tooth portions 5 and 9 a have the surface contact state at several places. The occlusion of the tooth portions 5 and 9a is then released.

  Next, the tooth portion 9b of the first intermediate transmission gear 3A and the tooth portion 11a of the second intermediate transmission gear 3B are engaged with each other inside the first intermediate transmission gear 3A. Finally, the second intermediate transmission gear 3A is engaged. Since the tooth portion 11b of the 3B and the tooth portion 12 of the inner main shaft gear 2 are engaged with each other, the rotational force is transmitted from the outer side to the inner side, and the rotational speed is increased.

  Further, when the rotational force is transmitted from the outside to the inside, the rotational speed increases while being transmitted from the gear 1 having a large diameter to the gears 3A, 3B, and 2 having a small diameter. Therefore, when the number of intermediate transmission gears is increased, Since the gear ratio is different, the rotational speed is further increased.

  Moreover, since the tooth portions 5, 9a, 9b, 11a, 11b, and 12 of the gears 1, 3A, 3B, and 2 have a gently curved waveform shape, each contact area is large and the transmission surface is several places. Because it increases, the rotational force can be distributed and transmitted. For this reason, even if the rotational force of the outer drive gear 1 is small, it is possible to transmit it to the inner main shaft gear 2 through the first intermediate transmission gear 3A and the second intermediate transmission gear 3B. Further, when contacting from the outside to the inside while rotating, since the surface gradually contacts the surface, noise and vibration can be effectively suppressed. In particular, in this case, since the above-described anti-slip ring 18 is incorporated, a great effect is exhibited.

  When the speed increase ratio was examined under the above embodiment, the rotation speed of the bearing case 20 was 624 rpm when the blade rotation speed was 300 rpm, and the rotation speed of the bearing case 20 was 1040 rpm when the blade rotation speed was 500 rpm. In either case, a speed increasing ratio of about 2.08 times was obtained.

  Therefore, since the speed increaser according to the present embodiment has a larger contact area than a general gear, it can exhibit high output at low speed rotation. Therefore, the blade is made small, and the rooftop of a building, residential area / shopping street・ Noise and vibration problems do not occur even if installed in various places such as parking lots, and it is possible to generate a lot of power if it is used for hydropower generation or if there is a constant flow even in a small river. Become.

  In addition, although the above-mentioned Example showed the gearbox used for the generator 22, this invention is not limited to this, Unless it is contrary to the mind of this invention, rotational force is provided. If it is necessary to increase the speed, it can be sufficiently used for other electric vehicles and blowers.

  Since the speed increaser according to the present invention can exhibit high output at low speed rotation only by using a gear having a unique wave shape, it is necessary to increase the rotational force of the wind power generation / hydroelectric power generation, electric vehicle. If applied to a blower or the like, it will be more convenient.

DESCRIPTION OF SYMBOLS 1 Outer drive gear 2 Inner transmission gear 3A 1st intermediate transmission gear 3B 2nd intermediate transmission gear 4a Inner peripheral occlusal surface 4b of outer drive gear 5 Inner peripheral non-occlusion surface of outer drive gear 5 Outer peripheral tooth portion 6 Outer drive gear Inner peripheral guide groove 7a of the first intermediate transmission gear 7b Outer peripheral occlusal surface of the first intermediate transmission gear 8a Inner peripheral occlusal surface of the first intermediate transmission gear 8b Inner peripheral non-engagement of the first intermediate transmission gear Surface 9a Outer peripheral tooth portion of the first intermediate transmission gear 9b Inner peripheral tooth portion of the first intermediate transmission gear 10a Outer peripheral guide groove of the first intermediate transmission gear 10b Inner peripheral guide groove of the first intermediate transmission gear 11a of the second intermediate transmission gear Outer peripheral tooth portion 11b Inner peripheral tooth portion of second intermediate transmission gear 12 Outer peripheral tooth portion of inner main shaft gear 13 First guide roller 14 Second guide roller 15 Third guide roller 16 Connecting arm 17 Holding bracket 18 Non-slip ring 9a Shake prevention means 19b Shake prevention means 20 Inner main shaft gear bearing case 21 Main shaft connecting shaft 22 Generator 23 Protective frame 24 Fixed support fitting 25 Power generation coil support fitting 26 Connecting main shaft 27 Protection plate 28 Permanent magnet 29 Coil winding 30 Plate spring X Distance between permanent magnet and coil winding at stop Y Distance between permanent magnet and coil winding at startup

Claims (4)

  An outer drive gear that rotates by receiving energy and an inner main shaft gear that transmits the rotational force of the outer drive gear to the rotating body, and a plurality of intermediate transmission gears can be engaged between the outer drive gear and the inner main shaft gear. A speed increasing device for increasing the rotational force of the outer drive gear with the intermediate transmission gear and the inner main shaft gear, and rotating the rotating body with the increased rotational output. Each gear is formed in a ring shape having a different diameter, and has an occlusal surface and a non-occlusal surface on the inner and outer peripheral surfaces opposed to each gear, and a tooth portion having a wave shape on the opposed occlusal surface for each gear. Are continuously formed to obtain an occlusal state due to surface contact between the respective wave-shaped tooth portions facing each other, and the rotational force of the outer drive gear is transmitted to the inner main shaft gear via the wave-shaped tooth portions. A guide roller is interposed between the opposing non-occlusion surfaces of each gear, and the guide roller Up gear, characterized in that to bite the corrugated toothing facing each other in the pressing direction of the error.   The speed increasing gear according to claim 1, wherein a non-slip ring similar to a wave-shaped tooth portion is incorporated between the occlusal surfaces facing each gear.   3. The guide roller interposed between the non-occlusion surfaces of each gear has an interposed position alternately opposite in each of the inner and outer steps. A speed increaser according to any one of the above.   4. The speed increaser according to claim 1, further comprising a gear anti-shake means provided at a boundary between the occlusal surface and the non-occlusal surface of each gear.

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