JP6887348B2 - Vertical axis wind turbine speed increaser - Google Patents

Vertical axis wind turbine speed increaser Download PDF

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JP6887348B2
JP6887348B2 JP2017170744A JP2017170744A JP6887348B2 JP 6887348 B2 JP6887348 B2 JP 6887348B2 JP 2017170744 A JP2017170744 A JP 2017170744A JP 2017170744 A JP2017170744 A JP 2017170744A JP 6887348 B2 JP6887348 B2 JP 6887348B2
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housing
wind turbine
bearing
speed increaser
shaft
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JP2019044918A (en
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広平 小野
広平 小野
近藤　博光
博光 近藤
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NTN Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N31/00—Means for collecting, retaining, or draining-off lubricant in or on machines or apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N9/00—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent
    • F16N9/02—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent with reservoir on or in a rotary member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Wind Motors (AREA)
  • General Details Of Gearings (AREA)
  • Gear Transmission (AREA)
  • Rolling Contact Bearings (AREA)

Description

この発明は、風力発電装置として用いられる垂直軸風車の増速機に関する。 The present invention relates to a speed increaser for a vertical axis wind turbine used as a wind power generator.

近年、環境意識の高まりを受け、環境に優しいクリーンなエネルギーへの需要が高まっている。クリーンエネルギーを代表するものの一つに風力発電がある。風力発電は、風の力をトルクに変換し、そのトルクを使用して発電するので、環境への負荷が少ない。 In recent years, with the growing environmental awareness, the demand for environmentally friendly and clean energy is increasing. Wind power generation is one of the representatives of clean energy. Wind power generation converts the force of the wind into torque and uses that torque to generate electricity, so the burden on the environment is small.

風力発電装置は、一般に自然環境下に設置され、基本的には不規則な風エネルギーを動力として稼働するので、風力発電装置の回転力伝達部には比較的大きく変動するトルクが作用する。このようなトルク変動は、回転力伝達部の構成部品の寿命短縮につながる。風力発電装置は設備の初期投資額が高額であり、また高所に設置されメンテナンスが困難であることから、回転力伝達部の構成部品には長寿命であることが要求される。 Since a wind power generator is generally installed in a natural environment and basically operates by using irregular wind energy as a power source, a torque that fluctuates relatively greatly acts on a rotational force transmission part of the wind power generator. Such torque fluctuation leads to shortening the life of the components of the rotational force transmission unit. Since the initial investment amount of equipment for wind power generation equipment is high and maintenance is difficult because it is installed in a high place, the components of the rotational force transmission unit are required to have a long life.

風力発電装置の回転力伝達部には、風車の主軸の回転を増速させる増速機が設けられている（例えば特許文献１）。特許文献１の実施形態に記載の増速機は、遊星歯車装置からなる一次増速装置と、ギヤ列からなる二次増速装置とで構成される。増速機としては、遊星歯車装置からなる増速装置単独で構成される場合や、ギヤ列からなる増速装置単独で構成される場合もある。いずれの構成であっても、前記理由により、増速機の構成部品には長寿命であることが要求される。中でも、遊星歯車を支持する軸受や、ギヤ軸を支持する軸受には高い信頼性と長寿命が求められる。 The rotational force transmission unit of the wind power generator is provided with a speed increaser that accelerates the rotation of the spindle of the wind turbine (for example, Patent Document 1). The speed-up device described in the embodiment of Patent Document 1 includes a primary speed-up device composed of a planetary gear device and a secondary speed-up device composed of a gear train. The speed-up machine may be composed of a speed-increasing device composed of planetary gears alone, or may be composed of a speed-up device composed of gear trains alone. Regardless of the configuration, for the above reason, the components of the speed increaser are required to have a long life. Above all, bearings that support planetary gears and bearings that support gear shafts are required to have high reliability and long life.

特開２００７−２６３３５７号公報JP-A-2007-263357

風力発電装置に用いられる風車には水平軸風車と垂直軸風車とがあるが、垂直軸風車は、風向を問わずに回転が得られて、翼の回転音が比較的静粛であることから、比較的小型の風車として開発が進められている。しかし、垂直軸風車においても、近年、発電効率は勿論のこと当該風車の特長である静音性が一層求められている。 There are two types of wind turbines used in wind power generators: horizontal axis wind turbines and vertical axis wind turbines. Vertical axis wind turbines can rotate regardless of the wind direction, and the rotation noise of the wings is relatively quiet. It is being developed as a relatively small wind turbine. However, even in a vertical axis wind turbine, in recent years, not only power generation efficiency but also quietness, which is a feature of the wind turbine, is further required.

垂直軸風車の増速機に遊星歯車装置を適用する場合、図８のように、増速機５１の入力軸５２と出力軸５３を直列に配置し、入力軸５２を垂直軸風車４０の主軸４１に連結し、出力軸５３を発電機４２の主軸４３に連結する。しかし、このように入力軸５２と出力軸５３が直列配置であると、風力発電装置全体の上下寸法が大きくなる。そこで、増速機をギヤ列からなる構成とすることで、図９のように、増速機１の入力軸２と出力軸３を並列に配置することを試みた。なお、図８、図９では、増速機１，５１、垂直軸風車４０、および発電機４２の位置関係だけを示しており、寸法は無視している。 When applying the planetary gear device to the speed increaser of the vertical axis wind turbine, as shown in FIG. 8, the input shaft 52 and the output shaft 53 of the speed increaser 51 are arranged in series, and the input shaft 52 is the main shaft of the vertical axis wind turbine 40. It is connected to 41, and the output shaft 53 is connected to the main shaft 43 of the generator 42. However, when the input shaft 52 and the output shaft 53 are arranged in series in this way, the vertical dimension of the entire wind power generator becomes large. Therefore, it was attempted to arrange the input shaft 2 and the output shaft 3 of the speed increaser 1 in parallel as shown in FIG. 9 by configuring the speed increaser to have a gear train. Note that FIGS. 8 and 9 show only the positional relationship between the speed increasers 1, 51, the vertical axis wind turbine 40, and the generator 42, and the dimensions are ignored.

入力軸２と出力軸３を並列に配置した増速機１の内部構造は、図１０のようになる。すなわち、入力軸２および出力軸３が互いに平行に縦向きに配置され、これら入力軸２および出力軸３にそれぞれ設けられた入力側ギヤ４および出力側ギヤ５が互いに噛み合う。入力軸２および出力軸３は、ハウジング１１に設けられた入力軸用の軸受６，７および出力軸用の軸受８，９によって、それぞれ回転自在に支持される。各軸受６，７，８，９は、例えば円すいころ軸受である。 The internal structure of the speed increaser 1 in which the input shaft 2 and the output shaft 3 are arranged in parallel is as shown in FIG. That is, the input shaft 2 and the output shaft 3 are arranged vertically in parallel with each other, and the input side gear 4 and the output side gear 5 provided on the input shaft 2 and the output shaft 3, respectively, mesh with each other. The input shaft 2 and the output shaft 3 are rotatably supported by bearings 6 and 7 for the input shaft and bearings 8 and 9 for the output shaft provided in the housing 11, respectively. Each of the bearings 6, 7, 8 and 9 is, for example, a tapered roller bearing.

ハウジング１１の内部には、入力側ギヤ４、出力側ギヤ５、および各軸受６，７，８，９の潤滑と冷却のために高粘度の潤滑油が封入される。図１０のように、ハウジング１１の下面には、入力軸用の下側軸受７の下端と入力軸２の下端とを覆う軸受蓋１２、および出力軸用の下側軸受９の下端と出力軸３の下端とを覆う軸受蓋１３がそれぞれ取り付けられる。これにより、ハウジング１１と軸受蓋１２，１３との間に、空間６１，６２が形成される。 Inside the housing 11, high-viscosity lubricating oil is sealed for lubrication and cooling of the input side gear 4, the output side gear 5, and the bearings 6, 7, 8 and 9. As shown in FIG. 10, on the lower surface of the housing 11, a bearing lid 12 that covers the lower end of the lower bearing 7 for the input shaft and the lower end of the input shaft 2, and the lower end of the lower bearing 9 for the output shaft and the output shaft. Bearing lids 13 that cover the lower ends of 3 are attached. As a result, spaces 61 and 62 are formed between the housing 11 and the bearing lids 12 and 13.

ハウジング内の空間６０と軸受蓋内の空間６１，６２とは、下側軸受７，９の内輪と外輪との間のすきまを通じて連通しているが、回転中、空間６１，６２への潤滑油の出入りは殆どなく澱んだ状態となっている。このため、入力軸２および出力軸３の回転中、その撹拌抵抗の増加により空間６１，６２内の潤滑油が発熱し、それによって潤滑油の粘度が低くなり過ぎて、潤滑性能が低下する。 The space 60 in the housing and the spaces 61 and 62 in the bearing lid communicate with each other through the gap between the inner ring and the outer ring of the lower bearings 7 and 9, but during rotation, the lubricating oil to the spaces 61 and 62 is supplied. There is almost no entry and exit, and it is in a stagnant state. Therefore, during the rotation of the input shaft 2 and the output shaft 3, the lubricating oil in the spaces 61 and 62 generates heat due to the increase in the stirring resistance thereof, so that the viscosity of the lubricating oil becomes too low and the lubricating performance deteriorates.

この発明の目的は、垂直軸風車型の風力発電装置をコンパクトに構成でき、潤滑性能が良く発電効率を向上させることができる垂直軸風車の増速機を提供することである。 An object of the present invention is to provide a vertical axis wind turbine speed increaser capable of compactly configuring a vertical axis wind turbine type wind power generator, having good lubrication performance, and improving power generation efficiency.

この発明の垂直軸風車の増速機は、ハウジングに互いに平行に縦向きに配置されて上端が前記ハウジングから突出する入力軸および出力軸と、これら入力軸および出力軸にそれぞれ設けられ、互いに噛み合う入力側ギヤおよび出力側ギヤと、前記ハウジングの上側壁部および下側壁部に設置されて前記入力軸と前記出力軸をそれぞれ回転自在に支持する入力軸用と出力軸用の上側軸受および下側軸受と、前記各下側軸受の下端を前記入力軸および前記出力軸の下端と共に覆うように前記ハウジングの下面に取り付けられた入力軸用および出力軸用の２つの軸受蓋とを備える垂直軸風車の増速機であって、
前記上側軸受と前記下側軸受とが互いに正面組合せの円すいころ軸受であり、前記２つのいずれか一方または両方の軸受蓋内の空間を前記ハウジング内の空間に連通させる連通孔が、前記ハウジングの前記下側壁部に設けられている。 The speed increaser of the vertical axis wind turbine of the present invention is vertically arranged parallel to each other in the housing, and the input shaft and the output shaft whose upper ends protrude from the housing are provided on the input shaft and the output shaft, respectively, and mesh with each other. Upper side bearings and lower side for input side gear and output side gear, and input shaft and output shaft which are installed on the upper side wall portion and lower side wall portion of the housing and rotatably support the input shaft and the output shaft, respectively. A vertical shaft wind turbine including a bearing and two bearing lids for an input shaft and an output shaft attached to the lower surface of the housing so as to cover the lower end of each lower bearing together with the input shaft and the lower end of the output shaft. It is a speed-up machine of
The upper bearing and the lower bearing are tapered roller bearings in which the upper bearing and the lower bearing are combined in front of each other, and a communication hole for communicating the space in one or both of the bearing lids with the space in the housing is formed in the housing. It is provided on the lower side wall portion.

この構成によると、入力軸および出力軸が縦向き配置であり、その軸端からなる入力端および出力端がいずれもハウジングの上面から上向きに突出している。このため、増速機の上方に発電機を設置し、その発電機に出力軸の出力端を接続し、垂直軸風車の主軸の下端に入力軸の入力端を接続することができて、前記垂直軸風車型の風力発電装置の全体をコンパクトに構成することができる。 According to this configuration, the input shaft and the output shaft are arranged vertically, and both the input end and the output end including the shaft ends project upward from the upper surface of the housing. Therefore, a generator can be installed above the speed increaser, the output end of the output shaft can be connected to the generator, and the input end of the input shaft can be connected to the lower end of the main shaft of the vertical axis wind turbine. The entire vertical axis wind turbine type wind power generator can be compactly configured.

入力軸および出力軸が縦向き配置であると、前述のように入力軸および出力軸の下端を支持する下側軸受が、軸受蓋内で、ギヤの潤滑と軸受の潤滑を兼用する高粘度油中に置かれることになる。円すいころ軸受からなる下側軸受は、回転による遠心力で小径側から大径側へ潤滑油を送る作用を奏する。この発明の作業装置は、上側軸受と下側軸受とが正面組合せで配置されているため、潤滑油は下側軸受を通って下側から上側へ送られる。
この場合に、ハウジングの下側壁部に連通孔が設けられていると、下側軸受による前記潤滑油送りに伴って、ハウジング内の空間から軸受蓋内の空間へ潤滑油が流れ込み、両空間間で潤滑油の循環が起きる。これにより、軸受蓋内の空間での潤滑油の澱みが解消され、潤滑油の温度上昇や潤滑性能の低下が防止される。
このように、垂直軸風車型の風力発電装置のコンパクト化を図りながら、潤滑油の澱みの課題を解消して潤滑性能を向上させ、発電効率を向上させることができる。 When the input shaft and the output shaft are arranged vertically, the lower bearing that supports the input shaft and the lower end of the output shaft is a high-viscosity oil that lubricates the gear and the bearing in the bearing lid as described above. It will be placed inside. The lower bearing, which is a tapered roller bearing, acts to send lubricating oil from the small diameter side to the large diameter side by centrifugal force due to rotation. In the working device of the present invention, since the upper bearing and the lower bearing are arranged in a frontal combination, the lubricating oil is sent from the lower side to the upper side through the lower bearing.
In this case, if a communication hole is provided in the lower side wall of the housing, the lubricating oil flows from the space inside the housing to the space inside the bearing lid as the lower bearing feeds the lubricating oil, and between the two spaces. Lubricating oil circulation occurs at. As a result, the stagnation of the lubricating oil in the space inside the bearing lid is eliminated, and the temperature rise of the lubricating oil and the deterioration of the lubricating performance are prevented.
In this way, it is possible to solve the problem of stagnation of lubricating oil, improve the lubrication performance, and improve the power generation efficiency while making the vertical axis wind turbine type wind power generation device compact.

この発明において、前記入力側ギヤおよび前記出力側ギヤがヘリカルギヤからなっていてもよい。
ヘリカルギヤは平歯車に比べて歯当たりが連続し、かつ歯面が滑らかであるため、良好な静音性が得られる。 In the present invention, the input side gear and the output side gear may be made of a helical gear.
Compared to spur gears, helical gears have continuous tooth contact and a smooth tooth surface, so that good quietness can be obtained.

この発明において、前記連通孔は、前記ハウジング内の空間側の開口部に対し前記軸受蓋内の空間側の開口部が、前記入力軸および前記出力軸のうちの前記軸受蓋によって下端が覆われている軸の回転方向の前側に位置していてもよい。
垂直軸風車の場合、風向に関係せず翼の回転方向は一方向である。よって、入力軸および出力軸の回転方向は常に同じである。このため、上記のように入力軸または出力軸の回転方向に合わせて連通孔を傾斜させて設けることにより、入力軸または出力軸の回転に逆らわずに連通孔を潤滑油が流れることとなり、ハウジング内の空間と軸受蓋内の空間との間の潤滑油の循環が促進される。 In the present invention, the communication hole is such that the space-side opening in the bearing lid is covered with respect to the space-side opening in the housing by the bearing lid of the input shaft and the output shaft. It may be located on the front side in the rotation direction of the bearing axis.
In the case of a vertical axis wind turbine, the direction of rotation of the blade is one direction regardless of the wind direction. Therefore, the rotation directions of the input shaft and the output shaft are always the same. Therefore, by providing the communication hole so as to be inclined according to the rotation direction of the input shaft or the output shaft as described above, the lubricating oil flows through the communication hole without going against the rotation of the input shaft or the output shaft, and the housing The circulation of lubricating oil between the space inside and the space inside the bearing lid is promoted.

この発明において、前記連通孔における前記ハウジング内の空間側の開口部に、前記ハウジング内の空間の側に先広がりとなる漏斗状部品が設置されていてもよい。
漏斗状部品が設置されていると、ハウジング内の空間の潤滑油が連通孔に円滑に集められるため、潤滑油が軸受蓋内の空間に取り込まれ易い。 In the present invention, a funnel-shaped component that expands toward the space side in the housing may be installed in the opening on the space side in the housing in the communication hole.
When the funnel-shaped component is installed, the lubricating oil in the space inside the housing is smoothly collected in the communication hole, so that the lubricating oil is easily taken into the space inside the bearing lid.

前記漏斗状部品における口径が大きい側の端部にメッシュ状のフィルタが設けられていてもよい。
このように漏斗状部品にフィルタが設けられていると、潤滑油に含まれているギヤの摩耗粉等の異物がフィルタに捕捉される。これにより、潤滑油が清浄化され、軸受の長期に亘る耐久性が得られる。フィルタが漏斗状部品における口径が大きい側の端部に設けられていると、フィルタに捕捉された異物の除去作業やフィルタの交換作業が容易である。 A mesh-shaped filter may be provided at the end of the funnel-shaped component on the side having a large diameter.
When the funnel-shaped component is provided with the filter in this way, foreign matter such as gear wear powder contained in the lubricating oil is captured by the filter. This cleans the lubricating oil and provides long-term durability of the bearing. If the filter is provided at the end of the funnel-shaped component on the larger diameter side, it is easy to remove foreign matter trapped in the filter and replace the filter.

また、前記漏斗状部品における口径が大きい側の端部の周縁部に磁石が設けられていてもよい。
このように漏斗状部品に磁石が設けられていると、潤滑油に含まれているギヤの摩耗粉等の金属粉を磁石によって吸着して、潤滑油を清浄化することができる。これにより、軸受の長期に亘る耐久性が得られる。磁石が漏斗状部品における口径が大きい側の端部に設けられていると、磁石に吸着された金属粉の除去作業が容易である。 Further, a magnet may be provided on the peripheral edge of the end portion of the funnel-shaped component on the side having a large diameter.
When the funnel-shaped component is provided with the magnet in this way, the lubricating oil can be cleaned by adsorbing metal powder such as gear wear powder contained in the lubricating oil by the magnet. As a result, long-term durability of the bearing can be obtained. If the magnet is provided at the end of the funnel-shaped component on the larger diameter side, the work of removing the metal powder adsorbed on the magnet is easy.

前記漏斗状部品における口径が大きい側の端部にメッシュ状のフィルタが設けられ、かつ前記漏斗状部品における口径が大きい側の端部の周縁部に磁石が設けられている場合、前記メッシュ状のフィルタは、その網目の大きさが中心部では細かく、外周部では粗くなっているのが好ましい。
潤滑油に含まれる異物の多くは、ギヤの摩耗粉からなる金属粉である。この金属粉がフィルタの外周部を流れる場合、金属粉は磁石によって吸着される。しかし、金属粉がフィルタの中心部を流れる場合、磁石の吸着力が強く及ばないので、金属粉が磁石に吸着されないことがある。フィルタの中心部の網目を細かくしておくことにより、磁石に吸着されなかった金属粉もフィルタで捕捉することができる。 When a mesh-like filter is provided at the end of the funnel-shaped part on the large-diameter side and a magnet is provided at the peripheral edge of the end of the funnel-shaped part on the large-diameter side, the mesh-like part It is preferable that the size of the mesh of the filter is fine at the central portion and coarse at the outer peripheral portion.
Most of the foreign substances contained in the lubricating oil are metal powders composed of gear wear powders. When this metal powder flows through the outer peripheral portion of the filter, the metal powder is attracted by the magnet. However, when the metal powder flows through the central portion of the filter, the attractive force of the magnet does not reach strongly, so that the metal powder may not be attracted to the magnet. By making the mesh in the center of the filter fine, metal powder that has not been attracted to the magnet can be captured by the filter.

この発明の垂直軸風車の増速機は、ハウジングに互いに平行に縦向きに配置されて上端が前記ハウジングから突出する入力軸および出力軸と、これら入力軸および出力軸にそれぞれ設けられ、互いに噛み合う入力側ギヤおよび出力側ギヤと、前記ハウジングの上側壁部および下側壁部に設置されて前記入力軸と前記出力軸をそれぞれ回転自在に支持する入力軸用と出力軸用の上側軸受および下側軸受と、前記各下側軸受の下端を前記入力軸および前記出力軸の下端と共に覆うように前記ハウジングの下面に取り付けられた入力軸用および出力軸用の２つの軸受蓋とを備え、前記上側軸受と前記下側軸受とが互いに正面組合せの円すいころ軸受であり、前記２つのいずれか一方または両方の軸受蓋内の空間を前記ハウジング内の空間に連通させる連通孔が、前記ハウジングの前記下側壁部に設けられているため、垂直軸風車型の風力発電装置をコンパクトに構成でき、潤滑性能が良く発電効率を向上させることができる。 The speed increaser of the vertical axis wind turbine of the present invention is vertically arranged parallel to each other in a housing and has an input shaft and an output shaft whose upper ends protrude from the housing, and these input shafts and output shafts are provided and mesh with each other. Upper side bearings and lower side for input side gear and output side gear, and input shaft and output shaft which are installed on the upper side wall portion and lower side wall portion of the housing and rotatably support the input shaft and the output shaft, respectively. The upper side is provided with a bearing and two bearing lids for an input shaft and an output shaft attached to the lower surface of the housing so as to cover the lower end of each lower bearing together with the input shaft and the lower end of the output shaft. The bearing and the lower bearing are conical roller bearings in front of each other, and a communication hole for communicating the space in one or both of the bearing lids with the space in the housing is the lower part of the housing. Since it is provided on the side wall, the vertical axis wind turbine type wind power generator can be compactly configured, the lubrication performance is good, and the power generation efficiency can be improved.

この発明の第１の実施形態に係る垂直軸風車の増速機の縦断面図である。It is a vertical sectional view of the speed increaser of the vertical axis wind turbine which concerns on 1st Embodiment of this invention. 同増速機における下側の入力軸用円すいころ軸受の平面図に連通孔の水平位置を示す図を加えた図である。It is the figure which added the figure which shows the horizontal position of the communication hole to the plan view of the conical roller bearing for the lower input shaft in the speed-increasing machine. この発明の第２の実施形態に係る垂直軸風車の増速機の縦断面図である。It is a vertical sectional view of the speed increaser of the vertical axis wind turbine which concerns on 2nd Embodiment of this invention. 同増速機の漏斗状部品の斜視図である。It is a perspective view of the funnel-shaped part of the speed increaser. 漏斗状部品の他の例を示す斜視図である。It is a perspective view which shows another example of a funnel-shaped part. 漏斗状部品のさらに他の例を示す斜視図である。It is a perspective view which shows still another example of a funnel-shaped part. 同漏斗状部品のフィルタの斜視図である。It is a perspective view of the filter of the funnel-shaped part. 従来の増速機と風車と発電機との位置関係を示す図である。It is a figure which shows the positional relationship between a conventional speed increaser, a wind turbine, and a generator. 試みの増速機と風車と発電機との位置関係を示す図である。It is a figure which shows the positional relationship between a speed increaser of an attempt, a wind turbine, and a generator. 試みの増速機の縦断面図である。It is a vertical cross-sectional view of the speed increaser of the attempt.

この発明の実施形態を図面と共に説明する。
［第１の実施形態］
図１は第１の実施形態に係る垂直軸風車の増速機の縦断面図である。この垂直軸風車の増速機１は、入力軸２および出力軸３が互いに平行に縦向きに配置され、これら入力軸２および出力軸３にそれぞれ設けられた入力側ギヤ４および出力側ギヤ５が互いに噛み合っている。入力側ギヤ４および出力側ギヤ５は、例えばヘリカルギヤである。 Embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a vertical cross-sectional view of the speed increaser of the vertical axis wind turbine according to the first embodiment. In the speed increaser 1 of the vertical axis wind turbine, the input shaft 2 and the output shaft 3 are arranged vertically in parallel with each other, and the input side gear 4 and the output side gear 5 provided on the input shaft 2 and the output shaft 3, respectively. Are in mesh with each other. The input side gear 4 and the output side gear 5 are, for example, helical gears.

前記入力軸２は、入力側ギヤ４の軸方向両側にそれぞれ位置する入力軸用の軸受６，７によってハウジング１１に回転自在に支持されている。また、前記出力軸３は、出力側ギヤ５の軸方向両側にそれぞれ位置する出力軸用の軸受８，９によってハウジング１１に回転自在に支持されている。各軸受６，７，８，９は、いずれも円すいころ軸受である。また、一対の入力軸用の軸受６，７および一対の出力軸用の軸受８，９は、いずれも正面組合せで配置されている。
なお、以下の説明では、軸受６，８を「上側軸受」と称し、軸受７，９を「下側軸受」と称する場合がある。 The input shaft 2 is rotatably supported by the housing 11 by bearings 6 and 7 for the input shaft located on both sides of the input side gear 4 in the axial direction. Further, the output shaft 3 is rotatably supported by the housing 11 by bearings 8 and 9 for the output shaft located on both sides of the output side gear 5 in the axial direction. Each of the bearings 6, 7, 8 and 9 is a tapered roller bearing. Further, the pair of input shaft bearings 6 and 7 and the pair of output shaft bearings 8 and 9 are all arranged in front combination.
In the following description, the bearings 6 and 8 may be referred to as "upper bearings" and the bearings 7 and 9 may be referred to as "lower bearings".

ハウジング１１は、入力軸用の上側軸受６および出力軸用の上側軸受８が設けられた水平状の下側壁部１１ａと、入力軸用の下側軸受７および出力軸用の下側軸受９が設けられた水平状の下側壁部１１ｂと、これら下側壁部１１ａおよび下側壁部１１ｂの外周縁同士を繋ぐ筒状の立壁部１１ｃとからなる。 The housing 11 includes a horizontal lower side wall portion 11a provided with an upper bearing 6 for an input shaft and an upper bearing 8 for an output shaft, and a lower bearing 7 for an input shaft and a lower bearing 9 for an output shaft. It is composed of a horizontal lower side wall portion 11b provided, and a tubular vertical wall portion 11c connecting the outer peripheral edges of the lower side wall portion 11a and the lower side wall portion 11b.

入力軸２は下側壁部１１ａを突き抜けて上方へ延び、その上端の入力端に、垂直軸風車４０の主軸４１（図９参照）が直接または間接的に接続される。また、出力軸３は下側壁部１１ａを突き抜けて上方へ延び、その上端の出力端に、発電機４２の主軸４３（図９参照）が直接または間接的に接続される。入力軸２および出力軸３の下端は、下側壁部１１ｂよりも少し下方に突出している。 The input shaft 2 penetrates the lower side wall portion 11a and extends upward, and the main shaft 41 (see FIG. 9) of the vertical shaft wind turbine 40 is directly or indirectly connected to the input end at the upper end thereof. Further, the output shaft 3 penetrates the lower side wall portion 11a and extends upward, and the main shaft 43 (see FIG. 9) of the generator 42 is directly or indirectly connected to the output end at the upper end thereof. The lower ends of the input shaft 2 and the output shaft 3 project slightly downward from the lower side wall portion 11b.

ハウジング１１の下側壁部１１ｂの下面には、入力軸用軸受蓋１２および出力軸用軸受蓋１３が取り付けられている。入力軸用軸受蓋１２は、入力軸２の下端および入力軸用の下側軸受７の下端を覆っている。出力軸用軸受蓋１３は、出力軸３の下端および出力軸用の下側軸受９の下端を覆っている。ハウジング１１と入力軸用軸受蓋１２との間、およびハウジング１１と出力軸用軸受蓋１３との間に密封状態とされている。 A bearing lid 12 for an input shaft and a bearing lid 13 for an output shaft are attached to the lower surface of the lower side wall portion 11b of the housing 11. The input shaft bearing lid 12 covers the lower end of the input shaft 2 and the lower end of the lower bearing 7 for the input shaft. The output shaft bearing lid 13 covers the lower end of the output shaft 3 and the lower end of the lower bearing 9 for the output shaft. A sealed state is provided between the housing 11 and the bearing lid 12 for the input shaft, and between the housing 11 and the bearing lid 13 for the output shaft.

ハウジング内の空間１４と、ハウジング１１の下側壁部１１ｂと入力軸用軸受蓋１２との間の空間である入力軸用軸受蓋内の空間１５とは、下側壁部１１ｂに設けられた連通孔１６によって互いに連通している。図１に示すように、連通孔１６は、上へ行くに従い入力軸２から離れるように傾斜させてある。また、図２の平面図に示すように、連通孔１６は、ハウジング内の空間側の開口部１６ａに対し入力軸用軸受蓋内の空間側の開口部１６ｂが、入力軸２の回転方向の前側に位置させてある。 The space 14 in the housing and the space 15 in the bearing lid for the input shaft, which is the space between the lower side wall portion 11b of the housing 11 and the bearing lid 12 for the input shaft, are communication holes provided in the lower side wall portion 11b. 16 communicates with each other. As shown in FIG. 1, the communication hole 16 is inclined so as to move away from the input shaft 2 as it goes upward. Further, as shown in the plan view of FIG. 2, in the communication hole 16, the space-side opening 16b in the input shaft bearing lid is in the direction of rotation of the input shaft 2 with respect to the space-side opening 16a in the housing. It is located on the front side.

図１では、ハウジング内の空間１４と入力軸用軸受蓋内の空間１５とを連通する連通孔１６のみが図示されているが、ハウジング内の空間１４と、下側壁部１１ｂと出力軸用軸受蓋１３との間の空間である出力軸用軸受蓋内の空間１７との間にも連通孔（図示せず）が設けられている。 In FIG. 1, only the communication hole 16 that communicates the space 14 in the housing and the space 15 in the bearing lid for the input shaft is shown, but the space 14 in the housing, the lower side wall portion 11b, and the bearing for the output shaft are shown. A communication hole (not shown) is also provided between the space 17 and the space 17 in the bearing lid for the output shaft, which is the space between the lid 13.

ハウジング内の空間１４および軸受蓋内の空間１５，１７には、入力側ギヤ４、出力側ギヤ５、および各軸受６，７，８，９の潤滑と冷却を兼ねる高粘度の潤滑油が封入される。入力軸用および出力軸用の下側軸受７，９は、上記高粘度油中に没した状態となっている。 The space 14 in the housing and the spaces 15 and 17 in the bearing lid are filled with high-viscosity lubricating oil that lubricates and cools the input side gear 4, the output side gear 5, and the bearings 6, 7, 8 and 9. Will be done. The lower bearings 7 and 9 for the input shaft and the output shaft are submerged in the high-viscosity oil.

この垂直軸風車の増速機１の作用・効果について説明する。
この垂直軸風車の増速機１は、入力軸２および出力軸３が縦向きの配置であり、その軸端からなる入力端および出力端がいずれもハウジング１０の上面から上向きに突出している。このため、この増速機１を図９のように風力発電装置に用いる場合、発電機４２を増速機１の上方に設置することが可能となる。そして、垂直軸風車４０の主軸４１の下端に入力軸２の入力端が接続され、増速機１の上に配置された発電機４２の主軸４３に出力軸３の出力端が接続される。これにより、垂直軸風車型の風力発電装置の上下高を低くして全体をコンパクトに構成することができる。また、入力側ギヤ４および出力側ギヤ５として、平歯車に比べて歯当たりが連続し、かつ歯面が滑らかなヘリカルギヤを用いたことにより、良好な静音性が得られる。 The operation and effect of the speed increaser 1 of this vertical axis wind turbine will be described.
In the speed increaser 1 of the vertical axis wind turbine, the input shaft 2 and the output shaft 3 are arranged in the vertical direction, and both the input end and the output end formed by the shaft ends project upward from the upper surface of the housing 10. Therefore, when the speed increaser 1 is used in the wind power generator as shown in FIG. 9, the generator 42 can be installed above the speed increaser 1. Then, the input end of the input shaft 2 is connected to the lower end of the main shaft 41 of the vertical shaft wind turbine 40, and the output end of the output shaft 3 is connected to the main shaft 43 of the generator 42 arranged on the speed increaser 1. As a result, the vertical height of the vertical axis wind turbine type wind turbine generator can be lowered to make the whole compact. Further, by using a helical gear having continuous tooth contact and a smooth tooth surface as compared with the spur gear as the input side gear 4 and the output side gear 5, good quietness can be obtained.

入力軸用の軸受６，７および出力用の軸受８，９として、円すいころ軸受が正面組合せで使用されている。円すいころ軸受は、回転による遠心力で小径側から大径側へ潤滑油を送る作用を奏する。上側軸受６，８と下側軸受７，９とが正面組合せで配置されているため、潤滑油は下側軸受７，９を通り抜けて下側から上側へと送られる。 Tapered roller bearings are used in front combination as bearings 6 and 7 for input shafts and bearings 8 and 9 for output. Tapered roller bearings act to send lubricating oil from the small diameter side to the large diameter side by centrifugal force due to rotation. Since the upper bearings 6 and 8 and the lower bearings 7 and 9 are arranged in a frontal combination, the lubricating oil is sent from the lower side to the upper side through the lower bearings 7 and 9.

例えば、入力軸用の下側軸受７の場合、内輪７ａと外輪７ｂとの間のすきまＳ（図２）を通って、入力軸用軸受蓋内の空間１５からハウジング内の空間１４へと潤滑油が送られる。ハウジング内の空間１４と入力軸用軸受蓋内の空間１５とを連通する連通孔１６が設けられているため、下側軸受７による前記潤滑油送りに伴って、ハウジング内の空間１４から入力軸用軸受蓋内の空間１５へ潤滑油が流れ込み、両空間１４，１５間で潤滑油の循環が起きる。これにより、入力軸用軸受蓋内の空間１５での潤滑油の澱みが解消され、潤滑油の温度上昇や潤滑性能の低下が防止される。 For example, in the case of the lower bearing 7 for the input shaft, the space 15 in the bearing lid for the input shaft is lubricated to the space 14 in the housing through the gap S (FIG. 2) between the inner ring 7a and the outer ring 7b. Oil is sent. Since the communication hole 16 for communicating the space 14 in the housing and the space 15 in the bearing lid for the input shaft is provided, the input shaft is provided from the space 14 in the housing as the lubricating oil is fed by the lower bearing 7. Lubricating oil flows into the space 15 in the bearing lid, and the lubricating oil circulates between the spaces 14 and 15. As a result, the stagnation of the lubricating oil in the space 15 in the bearing lid for the input shaft is eliminated, and the temperature rise of the lubricating oil and the deterioration of the lubricating performance are prevented.

また、連通孔１６は、ハウジング内の空間側の開口部１６ａに対し入力軸用軸受蓋内の空間側の開口部１６ｂが、入力軸２の回転方向の前側に位置させてある。これにより、入力軸２の回転に逆らわずに連通孔１６を潤滑油が流れることとなり、潤滑油の循環が促進される。 Further, in the communication hole 16, the space-side opening 16b in the input shaft bearing lid is located on the front side of the input shaft 2 in the rotational direction with respect to the space-side opening 16a in the housing. As a result, the lubricating oil flows through the communication hole 16 without going against the rotation of the input shaft 2, and the circulation of the lubricating oil is promoted.

出力側の下側軸受９についても上記と同様に、出力軸用軸受蓋内の空間１７からハウジング内の空間１４へと潤滑油が送られる。その場合、ハウジング内の空間１４と出力軸用軸受蓋内の空間１７との間に連通孔（図示せず）が設けられていると、両空間１４，１７間で潤滑油の循環が起きて、出力軸用軸受蓋内の空間１７での潤滑油の澱みが解消される。 As for the lower bearing 9 on the output side, lubricating oil is sent from the space 17 in the bearing lid for the output shaft to the space 14 in the housing in the same manner as described above. In that case, if a communication hole (not shown) is provided between the space 14 in the housing and the space 17 in the bearing lid for the output shaft, a lubricating oil circulation occurs between the spaces 14 and 17. , The stagnation of the lubricating oil in the space 17 in the bearing lid for the output shaft is eliminated.

［第２の実施形態］
図３は第２の実施形態に係る垂直軸風車の増速機の縦断面図である。この垂直軸風車の増速機１が第１の実施形態と異なる点は、連通孔１６におけるハウジング内の空間側の開口部１６ａに、漏斗状部品２０が設置されていることである。他は、第１の実施形態と同じである。 [Second Embodiment]
FIG. 3 is a vertical cross-sectional view of the speed increaser of the vertical axis wind turbine according to the second embodiment. The speed increaser 1 of the vertical axis wind turbine is different from the first embodiment in that the funnel-shaped component 20 is installed in the opening 16a on the space side in the housing in the communication hole 16. Others are the same as in the first embodiment.

漏斗状部品２０は、図４に示すような円すい台状の筒体で、口径の小さい側の端部に続いて連通孔１６（図３）に挿入可能な管部２０ａが設けられている。口径が大きい側の端部には、メッシュ状のフィルタ２１が装着されている。漏斗状部品２０は、図３のように管部２０ａを連通孔１６に差し込むことで、ハウジング内の空間１４の側に先広がりとなるように設置される。 The funnel-shaped component 20 is a conical trapezoidal cylinder as shown in FIG. 4, and is provided with a pipe portion 20a that can be inserted into the communication hole 16 (FIG. 3) following the end portion on the side having a smaller diameter. A mesh-shaped filter 21 is attached to the end portion on the side having a large diameter. The funnel-shaped component 20 is installed so as to expand toward the space 14 in the housing by inserting the pipe portion 20a into the communication hole 16 as shown in FIG.

このように、連通孔１６におけるハウジング内の空間側の開口部１６ａに漏斗状部品２０が設置されていると、ハウジング内の空間１４の潤滑油が連通孔１６に円滑に集められため、潤滑油が入力軸用軸受蓋内の空間１５に取り込まれ易い。その際、潤滑油に含まれている入力側ギヤ４と出力側ギヤ５との摩耗粉等の異物がフィルタ２１に捕捉される。これにより、潤滑油が清浄化され、軸受６，７，８，９の長期に亘る耐久性が得られる。
フィルタ２１が漏斗状部品２０における口径が大きい側の端部に設けられていると、フィルタ２１に捕捉された異物の除去作業やフィルタ２１の交換作業が容易である。 In this way, when the funnel-shaped component 20 is installed in the opening 16a on the space side in the housing in the communication hole 16, the lubricating oil in the space 14 in the housing is smoothly collected in the communication hole 16, so that the lubricating oil Is easily taken into the space 15 in the bearing lid for the input shaft. At that time, foreign matter such as wear debris between the input side gear 4 and the output side gear 5 contained in the lubricating oil is captured by the filter 21. As a result, the lubricating oil is cleaned, and the long-term durability of the bearings 6, 7, 8 and 9 can be obtained.
When the filter 21 is provided at the end of the funnel-shaped component 20 on the side having a large diameter, it is easy to remove the foreign matter trapped in the filter 21 and replace the filter 21.

［漏斗状部品の他の形態］
図５は漏斗状部品の他の形態を示す。この漏斗状部品２０Ａは、前記フィルタ２１に加えて、口径が大きい側の端部の周縁部に磁石２２が設けられている。
このように磁石２２が設けられていると、潤滑油に含まれている金属粉を吸着により確実に捕捉することができる。これにより、潤滑油をより一層清浄化することが可能になる。
磁石２２が漏斗状部品２０における口径が大きい側の端部に設けられていると、磁石２２に吸着された金属粉の除去作業が容易である。 [Other forms of funnel-shaped parts]
FIG. 5 shows another form of the funnel-shaped component. In the funnel-shaped component 20A, in addition to the filter 21, a magnet 22 is provided on the peripheral edge of the end portion on the side having a large diameter.
When the magnet 22 is provided in this way, the metal powder contained in the lubricating oil can be reliably captured by adsorption. This makes it possible to further purify the lubricating oil.
When the magnet 22 is provided at the end of the funnel-shaped component 20 on the side having a large diameter, the work of removing the metal powder adsorbed on the magnet 22 is easy.

図６は漏斗状部品のさらに他の形態を示す。この漏斗状部品２０Ｂは、図５の漏斗状部品２０Ａと同様に、口径が大きい側の端部にフィルタ２１と磁石２２とが設けられている。但し、漏斗状部品２０Ｂのフィルタ２１は、図７に示すように、その網目の大きさが中心部２１ａでは細かく、外周部２１ｂでは粗くなっている。 FIG. 6 shows yet another form of the funnel-shaped component. Similar to the funnel-shaped part 20A of FIG. 5, the funnel-shaped part 20B is provided with a filter 21 and a magnet 22 at the end on the side having a large diameter. However, as shown in FIG. 7, the size of the mesh of the filter 21 of the funnel-shaped component 20B is fine in the central portion 21a and coarse in the outer peripheral portion 21b.

潤滑油に含まれる異物のほとんどは、入力側ギヤ４と出力側ギヤ５との摩耗粉からなる金属粉である。この金属粉がフィルタ２１の外周部２１ｂを流れる場合、金属粉は磁石２２によって吸着される。しかし、金属粉がフィルタ２１の中心部２１ａを流れる場合、磁石２２の吸着力が強く及ばないので、金属粉が磁石２２に吸着されないことがある。フィルタ２１の中心部２１ａの網目を細かくしておくことにより、磁石２２に吸着されなかった金属粉もフィルタ２１で捕捉することが可能である。 Most of the foreign matter contained in the lubricating oil is metal powder composed of wear powder of the input side gear 4 and the output side gear 5. When the metal powder flows through the outer peripheral portion 21b of the filter 21, the metal powder is attracted by the magnet 22. However, when the metal powder flows through the central portion 21a of the filter 21, the attractive force of the magnet 22 does not strongly reach, so that the metal powder may not be attracted to the magnet 22. By making the mesh of the central portion 21a of the filter 21 fine, it is possible for the filter 21 to capture metal powder that has not been adsorbed by the magnet 22.

以上、実施形態に基づいてこの発明を実施するための形態を説明したが、今回開示された実施の形態はすべての点で例示であって制限的なものではない。この発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 Although the embodiments for carrying out the present invention have been described above based on the embodiments, the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

１…垂直軸風車の増速機
２…入力軸
３…出力軸
４…入力側ギヤ
５…出力側ギヤ
６…入力軸用の軸受（上側軸受）
７…入力軸用の軸受（下側軸受）
８…出力軸用の軸受（上側軸受）
９…出力軸用の軸受（下側軸受）
１１…ハウジング
１１ａ…下側壁部
１１ｂ…下側壁部
１２…入力軸用軸受蓋
１３…出力軸用軸受蓋
１４…ハウジング内の空間
１５…入力軸用軸受蓋内の空間
１６…連通孔
１６ａ…ハウジング内空間側の開口部
１６ｂ…軸受蓋内の空間側の開口部
１７…出力軸用軸受蓋内の空間
２０，２０Ａ，２０Ｂ…漏斗状部品
２１…フィルタ
２１ａ…中心部
２１ｂ…外周部
２２…磁石 1 ... Vertical shaft windmill speed increaser 2 ... Input shaft 3 ... Output shaft 4 ... Input side gear 5 ... Output side gear 6 ... Input shaft bearing (upper bearing)
7 ... Bearing for input shaft (lower bearing)
8 ... Bearing for output shaft (upper bearing)
9 ... Bearing for output shaft (lower bearing)
11 ... Housing 11a ... Lower side wall portion 11b ... Lower side wall portion 12 ... Input shaft bearing lid 13 ... Output shaft bearing lid 14 ... Space inside the housing 15 ... Space inside the input shaft bearing lid 16 ... Communication hole 16a ... Housing Opening 16b on the inner space side ... Opening 17 on the space side in the bearing lid ... Spaces 20, 20A, 20B in the bearing lid for the output shaft ... Funnel-shaped parts 21 ... Filter 21a ... Central part 21b ... Outer peripheral part 22 ... Magnet

Claims (7)

ハウジングに互いに平行に縦向きに配置されて上端が前記ハウジングから突出する入力軸および出力軸と、これら入力軸および出力軸にそれぞれ設けられ、互いに噛み合う入力側ギヤおよび出力側ギヤと、前記ハウジングの上側壁部および下側壁部に設置されて前記入力軸と前記出力軸をそれぞれ回転自在に支持する入力軸用と出力軸用の上側軸受および下側軸受と、前記各下側軸受の下端を前記入力軸および前記出力軸の下端と共に覆うように前記ハウジングの下面に取り付けられた入力軸用および出力軸用の２つの軸受蓋とを備える垂直軸風車の増速機であって、
前記上側軸受と前記下側軸受とが互いに正面組合せの円すいころ軸受であり、前記２つのいずれか一方または両方の軸受蓋内の空間を前記ハウジング内の空間に連通させる連通孔が、前記ハウジングの前記下側壁部に設けられた垂直軸風車の増速機。 An input shaft and an output shaft which are vertically arranged parallel to each other in the housing and whose upper ends project from the housing, and input side gears and output side gears which are provided on the input shaft and the output shaft and mesh with each other, and the housing. The upper bearings and lower bearings for the input shaft and the output shaft, which are installed on the upper side wall portion and the lower side wall portion and rotatably support the input shaft and the output shaft, respectively, and the lower end of each lower bearing are described. A vertical shaft windmill speed increaser having two bearing lids for an input shaft and an output shaft attached to the lower surface of the housing so as to cover the input shaft and the lower end of the output shaft.
The upper bearing and the lower bearing are tapered roller bearings in which the upper bearing and the lower bearing are combined in front of each other, and a communication hole for communicating the space in one or both of the bearing lids with the space in the housing is formed in the housing. A vertical axis wind turbine speed increaser provided on the lower side wall. 請求項１に記載の垂直軸風車の増速機において、前記入力側ギヤおよび前記出力側ギヤがヘリカルギヤからなる垂直軸風車の増速機。 The speed increaser for a vertical axis wind turbine according to claim 1, wherein the input side gear and the output side gear are helical gears. 請求項１または請求項２に記載の垂直軸風車の増速機において、前記連通孔は、前記ハウジング内の空間側の開口部に対し前記軸受蓋内の空間側の開口部が、前記入力軸および前記出力軸のうちの前記軸受蓋によって下端が覆われている軸の回転方向の前側に位置する垂直軸風車の増速機。 In the speed increaser for the vertical shaft wind turbine according to claim 1 or 2, the communication hole has a space-side opening in the bearing lid with respect to the space-side opening in the housing, and the input shaft. And a speed increaser for a vertical shaft wind turbine located on the front side in the rotational direction of the shaft whose lower end is covered by the bearing lid of the output shaft. 請求項１ないし請求項３のいずれか１項に記載の垂直軸風車の増速機において、前記連通孔における前記ハウジング内の空間側の開口部に、前記ハウジング内の空間の側に先広がりとなる漏斗状部品が設置されている垂直軸風車の増速機。 In the speed increaser for a vertical axis wind turbine according to any one of claims 1 to 3, the opening on the space side in the housing in the communication hole is spread out toward the space side in the housing. A vertical axis wind turbine speed increaser with funnel-shaped parts installed. 請求項４に記載の垂直軸風車の増速機において、前記漏斗状部品における口径が大きい側の端部にメッシュ状のフィルタが設けられた垂直軸風車用の増速機。 The speed increaser for a vertical axis wind turbine according to claim 4, wherein a mesh filter is provided at an end of the funnel-shaped component on the side having a large diameter. 請求項４または請求項５に記載の垂直軸風車の増速機において、前記漏斗状部品における口径が大きい側の端部の周縁部に磁石が設けられた垂直軸風車の増速機。 The speed increaser for a vertical axis wind turbine according to claim 4 or 5, wherein a magnet is provided on the peripheral edge of the end portion of the funnel-shaped component having a large diameter. 請求項４に記載の垂直軸風車の増速機において、前記漏斗状部品における口径が大きい側の端部にメッシュ状のフィルタが設けられ、かつ前記漏斗状部品における口径が大きい側の端部の周縁部に磁石が設けられ、前記メッシュ状のフィルタは、その網目の大きさが中心部では細かく、外周部では粗い垂直軸風車の増速機。 In the vertical axis wind turbine speed increasing machine according to claim 4, a mesh-like filter is provided at the end of the funnel-shaped component on the large-diameter side, and the end of the funnel-shaped component on the large-diameter side. A magnet is provided on the peripheral edge of the mesh filter, and the mesh size of the filter is fine in the central portion and coarse in the outer peripheral portion, which is a speed increaser for a vertical axis wind turbine.
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