JPH08105521A - Air-cooled gear transmission - Google Patents
Air-cooled gear transmissionInfo
- Publication number
- JPH08105521A JPH08105521A JP24032294A JP24032294A JPH08105521A JP H08105521 A JPH08105521 A JP H08105521A JP 24032294 A JP24032294 A JP 24032294A JP 24032294 A JP24032294 A JP 24032294A JP H08105521 A JPH08105521 A JP H08105521A
- Authority
- JP
- Japan
- Prior art keywords
- air
- fan
- lubricating oil
- gear transmission
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、産業機械駆動用として
使用される空冷歯車変速機に係り、特に、空冷用ファン
の小形化、低騒音化に有効なファン構造を有する空冷歯
車変速機に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-cooled gear transmission used for driving an industrial machine, and more particularly to an air-cooled gear transmission having a fan structure effective for downsizing an air-cooling fan and reducing noise. It is a thing.
【０００２】[0002]
【従来の技術】従来の歯車変速機の空冷装置を図１０を
参照して説明する。図１０は、従来の空冷歯車変速機の
側面図である。図１０に示すものは、例えば、特開平３
−９１９８号公報に記載された排水ポンプ用減速機の強
制空冷装置であり、据付スペースの低減と、減速機の大
容量化に対応するため、変速機本体９の入力軸１の軸端
に軸流ファン２６を取付け、軸流ファン２６からの風を
フィン付き手段を有する潤滑油通路８に直接当てるよう
にして、潤滑油の冷却を行う構造となっていた。2. Description of the Related Art A conventional air-cooling device for a gear transmission will be described with reference to FIG. FIG. 10 is a side view of a conventional air-cooled gear transmission. What is shown in FIG.
A forced air-cooling device for a drainage pump speed reducer described in Japanese Patent Publication No. 9198, and in order to reduce the installation space and increase the capacity of the speed reducer, a shaft is attached to the shaft end of the input shaft 1 of the transmission main body 9. The flow fan 26 is attached, and the air from the axial fan 26 is directly applied to the lubricating oil passage 8 having the finned means to cool the lubricating oil.
【０００３】[0003]
【発明が解決しようとする課題】前記従来技術は、特
に、低速回転のとき静圧の回収が十分に出来ないため空
冷効率が悪く、またフィン付き潤滑油通路に集中して風
を当てることができない等の理由から、大き目のファン
を取り付ける必要があり、このため、消費電力の増加、
騒音の増大等の問題点があった。In the above-mentioned prior art, the air cooling efficiency is poor because the static pressure cannot be sufficiently recovered particularly at low speed rotation, and the wind may be concentrated on the finned lubricating oil passage. It is necessary to install a large fan for the reason that it can not be done, etc.
There were problems such as increased noise.
【０００４】本発明は、上記従来技術の問題点を解決す
るためになされたもので、変速機本体と冷却ファンとを
一体化したコンパクト構造の空冷歯車変速機において、
冷却ファンからの風を効率的に活用することによりファ
ンの小形化および低騒音化を図り、小形で低騒音の空冷
歯車変速機を提供することを目的とする。また、本発明
の他の目的は、軸端に二つ以上の空冷装置を有する空冷
歯車変速機において、空冷装置の小形化および低コスト
化を図ることにある。The present invention has been made to solve the above-mentioned problems of the prior art. In an air-cooled gear transmission having a compact structure in which a transmission main body and a cooling fan are integrated,
It is an object of the present invention to provide a small-sized and low-noise air-cooled gear transmission by achieving efficient downsizing and noise reduction of the fan by efficiently utilizing the wind from the cooling fan. Another object of the present invention is to reduce the size and cost of the air cooling device in an air cooling gear transmission having two or more air cooling devices at the shaft ends.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る空冷歯車変速機の構成は、少なくと
も、変速用歯車と、この変速用歯車を固定する軸と、こ
の軸を支持する軸受と、これらを収納するケースからな
る変速機本体に、空冷手段を備えてなる空冷歯車変速機
において、入力軸、中間軸および出力軸のうちの少なく
とも一軸の軸端に遠心式もしくは斜流式の冷却ファンを
設け、前記軸端近傍に、冷却用のフィン手段を有する潤
滑油通路を設けるとともに、前記冷却ファンの外側に、
その内周に１ヶ所もしくは複数のスパイラル状の突起を
有するファンケーシングを設け、かつ、前記ファンケー
シングに１つもしくは複数個の吐出口を設け、前記吐出
口と前記潤滑油通路との間に風路を形成したものであ
る。In order to achieve the above object, the structure of an air-cooled gear transmission according to the present invention has at least a speed change gear, a shaft for fixing the speed change gear, and a support for the shaft. In an air-cooled gear transmission including an air-cooling means in a transmission main body including a bearing and a case that accommodates them, a centrifugal type or a mixed flow type is provided at the shaft end of at least one of the input shaft, the intermediate shaft, and the output shaft. Type cooling fan is provided, a lubricating oil passage having fin means for cooling is provided near the shaft end, and outside the cooling fan,
A fan casing having one or a plurality of spiral protrusions is provided on the inner periphery thereof, and one or a plurality of discharge ports are provided in the fan casing, and a wind is provided between the discharge port and the lubricating oil passage. It is a road.
【０００６】より詳しくは、本発明の空冷歯車変速機
は、上記構成において、ファンケーシングに設けた吐出
口と潤滑油通路との間に形成した風路を、当該風路の途
中から軸方向に曲げるように案内手段を設けたものであ
る。また、潤滑油通路と変速機本体との間に断面が縮小
する風路を設けるようにしたものである。すなわち、前
記ファンケーシングの吐出口と前記潤滑油通路との間を
結ぶ風路を軸方向に曲げ、その先に前記潤滑油通路を設
けるとともに、前記潤滑油通路の先に断面が縮小する風
路を設ける構造としたものである。More specifically, in the air-cooled gear transmission according to the present invention, in the above structure, the air passage formed between the discharge port provided in the fan casing and the lubricating oil passage is axially extended from the middle of the air passage. The guide means is provided so as to bend. Further, an air passage whose cross section is reduced is provided between the lubricating oil passage and the transmission main body. That is, an air passage that connects the discharge port of the fan casing and the lubricating oil passage is bent in the axial direction, the lubricating oil passage is provided at the end of the air passage, and the cross section is reduced at the end of the lubricating oil passage. Is provided.
【０００７】さらに、本発明の空冷歯車変速機は、前記
ファンケーシングに設けた吐出口の外側に潤滑油通路を
配置するように構成したものである。すなわち、前記フ
ァンケーシングの吐出口の外側に直接または風路を介し
前記潤滑油通路を設ける構造としたのものである。Further, the air-cooled gear transmission according to the present invention is configured such that the lubricating oil passage is arranged outside the discharge port provided in the fan casing. That is, the lubricating oil passage is provided outside the discharge port of the fan casing directly or through an air passage.
【０００８】さらに、入力軸、中間軸および出力軸のう
ちのいずれかの軸端に二つ以上の空冷装置を有する歯車
変速機において、前記空冷装置のうち少なくとも一つを
軸流ファンと潤滑油通路で構成するようにしたものであ
る。Further, in a gear transmission having two or more air cooling devices at any shaft end of the input shaft, the intermediate shaft and the output shaft, at least one of the air cooling devices is an axial fan and a lubricating oil. It is made up of passages.
【０００９】[0009]
【作用】上記技術的手段による働きは次のとおりであ
る。本発明の空冷装置では、ファンケーシングに設けた
ノーズ部によりケース内の風路がスパイラル状となり、
ファンインペラで昇圧されケーシング内部に放出された
風は、ノーズ部からスパイラルケーシングの内側を流
れ、減速整流され静圧が回収される。その結果、ファン
効率が上がるとともに、ケース内の流れが乱流から層流
になり、騒音を低減させることができる。さらに、吐出
口と潤滑油通路との間を結ぶ風路により、冷却用のフィ
ン等を有する潤滑油通路に冷却ファンから送り出される
風を集中して当てることにより、変速機内部を循環する
油を効率よく冷却することができる。The function of the above technical means is as follows. In the air-cooling device of the present invention, the nose portion provided in the fan casing makes the air passage in the case spiral.
The wind that has been pressurized by the fan impeller and discharged into the casing flows from the nose portion inside the spiral casing, is decelerated and rectified, and the static pressure is recovered. As a result, the fan efficiency is increased, and the flow in the case is changed from turbulent flow to laminar flow, and noise can be reduced. Furthermore, the air passage connecting between the discharge port and the lubricating oil passage concentrates the air sent from the cooling fan on the lubricating oil passage having fins for cooling, so that the oil circulating inside the transmission is prevented. It can be cooled efficiently.
【００１０】また、大容量変速機の場合には、一軸（高
速軸）だけでなく中間軸、低速軸にも本空冷装置を設け
ることにより対応することができる。構造的に可能な場
合は各軸の両端に本空冷装置を設けることにより、さら
に冷却能力を上げることができる。本発明の空冷装置で
は、前記ファンケーシングの吐出口と前記潤滑油通路と
の間を結ぶ風路により軸方向に曲げられた風が前記潤滑
油通路を通り、変速機内部を循環する油を冷却したの
ち、変速機本体にも当たる。その結果、変速機本体を直
接冷却することができ、冷却能力がさらに向上する。In the case of a large-capacity transmission, the air-cooling device can be provided for not only one shaft (high speed shaft) but also the intermediate shaft and the low speed shaft. If structurally possible, the cooling capacity can be further increased by providing the air cooling devices at both ends of each shaft. In the air cooling device of the present invention, the wind bent in the axial direction by the air passage connecting the discharge port of the fan casing and the lubricating oil passage cools the oil circulating inside the transmission through the lubricating oil passage. After that, hit the transmission body. As a result, the transmission main body can be directly cooled, and the cooling capacity is further improved.
【００１１】また、本発明の空冷装置では、前記ファン
ケーシングの吐出口と前記潤滑油通路との間を結ぶ風路
により軸方向に曲げられた風が前記潤滑油通路を通り、
変速機内部を循環する油を冷却したのち、さらに断面が
縮小する風路により風速が増し、また方向が安定し変速
機本体に沿って勢いよく風が流れる。その結果、変速機
本体を効率良く冷却することができる。Further, in the air-cooling device of the present invention, the wind bent in the axial direction by the air passage connecting the discharge port of the fan casing and the lubricating oil passage passes through the lubricating oil passage,
After cooling the oil circulating inside the transmission, the wind speed increases due to the air passage having a smaller cross section, and the direction is stable, and the wind vigorously flows along the transmission main body. As a result, the transmission main body can be efficiently cooled.
【００１２】さらに、本発明の空冷装置では、前記ファ
ンケーシングの吐出口の外側に直接または風路を介して
前記潤滑油通路が結ばれており、風は曲げられずに乱れ
もなく前記潤滑油通路を通過する。その結果、変速機内
部を循環する油を効率良く冷却することができる。Further, in the air-cooling device of the present invention, the lubricating oil passage is connected to the outside of the discharge port of the fan casing directly or via the air passage, so that the wind is not bent and is not disturbed. Pass through the passage. As a result, the oil circulating inside the transmission can be efficiently cooled.
【００１３】さらに、本発明の空冷装置では、入力軸、
中間軸および出力軸のうちのいずれかの軸端に二つ以上
の空冷装置を有する歯車変速機において、空間的に遠心
式または斜流式の冷却ファンをつけにくい軸端等の少な
くとも一つをを軸流ファンと前記潤滑油通路で構成して
いる。その結果、つけない場合より冷却能力が上がるこ
と、または、構成が簡単になりコストが低減すること等
の効果がある。Further, in the air cooling device of the present invention, the input shaft,
In a gear transmission having two or more air-cooling devices at either shaft end of the intermediate shaft and the output shaft, at least one of the shaft ends, etc. where it is difficult to spatially install a centrifugal or mixed flow type cooling fan Is composed of an axial fan and the lubricating oil passage. As a result, there is an effect that the cooling capacity is higher than when it is not attached, or the configuration is simple and the cost is reduced.
【００１４】[0014]
【実施例】以下、本発明の各実施例を図１ないし図９を
参照して説明する。以下に説明する各実施例は、本発明
をポンプ用減速機に適用した例である。 〔実施例 １〕まず、第一の実施例を図１ないし図５を
参照して説明する。図１は、本発明の一実施例に係る空
冷歯車変速機におけるファン部正面の縦断面図、図２
は、図１の空冷歯車変速機におけるファン部の横断面
図、図３は、本発明の一実施例に係る図１の空冷歯車変
速機の側面図、図４は、図１の空冷歯車変速機における
フィン付き潤滑油通路の斜視図、図５は、フィン付き潤
滑油通路の分解斜視図である。なお、図１，２では変速
機本体を二点鎖線で示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Each embodiment of the present invention will be described below with reference to FIGS. Each of the embodiments described below is an example in which the present invention is applied to a speed reducer for a pump. [Embodiment 1] First, a first embodiment will be described with reference to FIGS. FIG. 1 is a vertical cross-sectional view of the front surface of a fan portion of an air-cooled gear transmission according to an embodiment of the present invention.
1 is a cross-sectional view of a fan portion of the air-cooled gear transmission of FIG. 1, FIG. 3 is a side view of the air-cooled gear transmission of FIG. 1 according to an embodiment of the present invention, and FIG. 4 is an air-cooled gear transmission of FIG. Fig. 5 is a perspective view of a finned lubricating oil passage in the machine, and Fig. 5 is an exploded perspective view of the finned lubricating oil passage. 1 and 2, the transmission main body is shown by a two-dot chain line.
【００１５】まず、本実施例の空冷歯車変速機の構成に
ついて説明する。図１ないし図３において、変速機本体
９は、特に限定するものではないが、少なくとも、変速
用歯車と、この変速用歯車を嵌着する軸と、この軸を支
持する軸受と、これらを収納するケースからなるもので
ある（図示せず）。変速機本体９内には、例えば、変速
用歯車として傘歯車対が設けられており、入力軸１の回
転を垂直に方向を変えて減速し出力軸２５に伝える。First, the structure of the air-cooled gear transmission of this embodiment will be described. 1 to 3, the transmission main body 9 is not particularly limited, but at least a speed change gear, a shaft into which the speed change gear is fitted, a bearing that supports the shaft, and a housing for accommodating them. (Not shown). In the transmission main body 9, for example, a bevel gear pair is provided as a gear for speed change, and the rotation of the input shaft 1 is vertically changed to reduce the speed and is transmitted to the output shaft 25.
【００１６】この変速機本体９に取り付けた空冷手段を
説明する。入力軸１の軸端には、空冷用のラジアルファ
ン２が取り付けられている。ラジアルファン２の外側に
は、ファンケーシング４が変速機本体９のハウジングに
固定されており、このファンケーシング４には、吸込口
３および吐出口７がそれぞれ２個設けられている。ファ
ンケーシング４は、その内部に吸込口３に続く複数個
（図１では２個）のノーズ部５、スパイラルケーシング
部６が設けられている。そのノーズ部５の後側にノーズ
部と同数（図１では２個）の吐出口７が開口している。The air cooling means attached to the transmission main body 9 will be described. A radial fan 2 for air cooling is attached to the shaft end of the input shaft 1. A fan casing 4 is fixed to the housing of the transmission main body 9 outside the radial fan 2. The fan casing 4 is provided with two suction ports 3 and two discharge ports 7. The fan casing 4 is provided therein with a plurality of (two in FIG. 1) nose portions 5 and a spiral casing portion 6 following the suction port 3. On the rear side of the nose portion 5, the same number of discharge ports 7 as the nose portion (two in FIG. 1) are opened.
【００１７】前記入力軸１の軸端近傍に、冷却用のフィ
ン手段を有するフィン付き潤滑油通路８が設けられてい
る。フィン付き潤滑油通路８は、ファンケ−シング４と
変速機本体９との間にあり、吐出口７とフィン付き潤滑
油通路８との間にはガイド２４等により風路が形成され
ている。すなわち、風路は半径方向から軸方向に曲げら
れるように、ガイド２４等で案内されている。A finned lubricating oil passage 8 having fin means for cooling is provided near the shaft end of the input shaft 1. The finned lubricating oil passage 8 is located between the fan casing 4 and the transmission main body 9, and an air passage is formed between the discharge port 7 and the finned lubricating oil passage 8 by a guide 24 or the like. That is, the air passage is guided by the guide 24 or the like so as to be bent from the radial direction to the axial direction.
【００１８】フィン付き潤滑油通路８は、例えば、図
４，５に示すようなものであり、セパレ−トプレ−ト３
１で分けられた通路を、一方には潤滑油（矢印２７，２
８）が流れ、他方には冷風（矢印２９，３０）が流れ、
プレ−トフィン３２により効率良く熱交換が行なわれる
ものである。なお、特に効率を考えなければ、冷却用の
フィン等を設けなくてもよい。図１では、ラジアルファ
ン２の回転方向を矢印Ａ，変速機潤滑用の油入口を矢印
Ｂ，油出口を矢印Ｃで示している。矢印１０〜２３は風
の流れ方向を示す。The finned lubricating oil passage 8 is, for example, as shown in FIGS. 4 and 5, and includes a separate plate 3
The passage divided by 1 and the lubricating oil (arrows 27, 2
8) flows, on the other hand cold air (arrows 29, 30) flows,
Heat is efficiently exchanged by the plate fins 32. If efficiency is not particularly considered, cooling fins or the like may not be provided. In FIG. 1, the rotational direction of the radial fan 2 is indicated by arrow A, the oil inlet for transmission lubrication is indicated by arrow B, and the oil outlet is indicated by arrow C. Arrows 10 to 23 indicate the wind flow direction.
【００１９】次に、このような構成の空冷歯車変速機の
動作を説明する。入力軸１の回転にともないラジアルフ
ァン２が回転し、吸込口３から吸気された矢印１７，２
１に示す風は、昇圧されファンケーシング４内に放出さ
れる。その風はノーズ部５からスパイラルケーシング６
の曲線に沿って、矢印１０〜１６のようにスパイラルケ
ーシング６内を流れることになり、ディフューザと同様
の効果により、風が減速整流され動圧から静圧に変換さ
れる。また、ファンケーシング４内の風の流れは整流さ
れた層流状態を保ち、矢印１９，２２に示すように、吐
出口７から吐出される。Next, the operation of the air-cooled gear transmission thus constructed will be described. The radial fan 2 rotates with the rotation of the input shaft 1, and the arrows 17 and 2 sucked from the suction port 3
The wind shown in 1 is pressurized and discharged into the fan casing 4. The wind flows from the nose part 5 to the spiral casing 6
The air flows in the spiral casing 6 as indicated by arrows 10 to 16 along the curve, and the wind is decelerated and rectified to be converted from static pressure to static pressure by the same effect as the diffuser. In addition, the flow of wind in the fan casing 4 maintains a rectified laminar flow state and is discharged from the discharge port 7 as shown by arrows 19 and 22.
【００２０】吐出口７から吐出された風は、ファンケー
シング４とガイド２４により構成された風路を通り、方
向を入力軸１の軸方向に変え、フィン付き潤滑油通路８
に集中して送風され、変速機（本例ではポンプ用減速
機）内部を循環する油を効率的に冷却し、変速機全体の
発熱を吸収するとともに、フィン付き潤滑油通路８を通
った風は、矢印２０，２３のように変速機本体９にも当
り、変速機本体９を直接冷却する効果もある。その結
果、ファンの冷却効率が向上するためラジアルファン２
の小形化を図ることができる。また、風の流れが層流を
保つためラジアルファン２の低騒音化を図ることができ
る。The air discharged from the discharge port 7 passes through the air passage formed by the fan casing 4 and the guide 24, and the direction is changed to the axial direction of the input shaft 1, and the finned lubricating oil passage 8 is formed.
The air that is blown in a concentrated manner and efficiently circulates the oil that circulates inside the transmission (pump reduction gear in this example), absorbs the heat generated by the entire transmission, and also passes through the finned lubricating oil passage 8. Also hits the transmission main body 9 as shown by arrows 20 and 23, and has the effect of directly cooling the transmission main body 9. As a result, the cooling efficiency of the fan is improved, so the radial fan 2
Can be miniaturized. Further, since the air flow keeps the laminar flow, the noise of the radial fan 2 can be reduced.
【００２１】第一の実施例によれば、次の効果が得られ
る。空冷歯車減速機において、ファンケーシング４に設
けたノーズ部５によりケース内の風路がスパイラル状と
なり、ファンインペラで昇圧されケーシング内部に放出
された風は、ノーズ部５からスパイラルケーシング部６
の内側を流れ、減速整流され静圧が回収される。さら
に、風路を通して、フィン付き潤滑油通路８にラジアル
ファン２（冷却ファン）から送り出される風を集中して
当てることにより、変速機内部を循環する油を効率よく
冷却することができる。その結果、ファン効率が向上す
るので、ファンを小形化することができる。また、ファ
ンからの風を直接潤滑油通路に当てる従来技術と異な
り、風の流れを層流に保つことができるので、ファンの
低騒音化を図ることができる等の効果がある。According to the first embodiment, the following effects can be obtained. In the air-cooled gear reducer, the nose portion 5 provided in the fan casing 4 creates a spiral air passage in the case, and the wind boosted by the fan impeller and discharged into the casing is supplied from the nose portion 5 to the spiral casing portion 6.
Flows inside, and is decelerated and rectified to recover static pressure. Furthermore, the air sent from the radial fan 2 (cooling fan) is concentrated and applied to the finned lubricating oil passage 8 through the air passage, whereby the oil circulating inside the transmission can be efficiently cooled. As a result, the fan efficiency is improved, and the fan can be downsized. Further, unlike the prior art in which the wind from the fan is directly applied to the lubricating oil passage, the flow of the wind can be maintained in a laminar flow, so that the noise of the fan can be reduced.
【００２２】また、第一の実施例によれば、空冷歯車減
速機において、前記ファンケーシング４の吐出口７とフ
ィン付き潤滑油通路８との間を結ぶ風路により軸方向に
曲げられた風が、前記フィン付き潤滑油通路８を通り、
変速機内部を循環する油を冷却したのち、変速機本体９
にも当たる。その結果、変速機本体９も直接冷却するこ
とができ、ファン効率が向上し、ファンを小形化するこ
とができる。さらに、風の流れを層流に保つことができ
るのでファンの低騒音化を図ることができる等の効果が
ある。Further, according to the first embodiment, in the air-cooled gear reducer, the wind bent in the axial direction by the air passage connecting the discharge port 7 of the fan casing 4 and the finned lubricating oil passage 8 with each other. Through the finned lubricating oil passage 8,
After cooling the oil circulating inside the transmission, the transmission main body 9
It also hits. As a result, the transmission main body 9 can also be directly cooled, the fan efficiency is improved, and the fan can be downsized. Furthermore, since the flow of wind can be kept laminar, there is an effect that the noise of the fan can be reduced.
【００２３】〔実施例 ２〕次に、本発明の第二の実施
例を図６を参照して説明する。図６は、本発明の第二の
実施例に係る空冷歯車変速機におけるファン部正面の縦
断面図である。図中、図１と同一符号のものは、先の第
一の実施例と同一または同等機能のものであるから、そ
の説明を省略する。まず、図６に示す実施例の構成につ
いて説明する。本実施例の特徴は、フィン付き潤滑油通
路８が３個所あり、ノーズ部５もそれに対応して３個所
あることである。その他の構成は第一の実施例と同じで
ある。フィン付き潤滑油通路８の位置に関しては特に図
６に限定するものではない。[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a vertical cross-sectional view of the front surface of the fan portion in the air-cooled gear transmission according to the second embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 1 have the same or similar functions as those of the first embodiment described above, and therefore their explanations are omitted. First, the configuration of the embodiment shown in FIG. 6 will be described. A feature of this embodiment is that there are three finned lubricating oil passages 8 and three nose portions 5 corresponding thereto. The other structure is the same as that of the first embodiment. The position of the finned lubricating oil passage 8 is not particularly limited to that shown in FIG.
【００２４】次に、動作について説明する。動作につい
ても、第一の実施例とほぼ同じである。第二の実施例の
効果は、冷却能力が大きくなることである。Next, the operation will be described. The operation is almost the same as that of the first embodiment. The effect of the second embodiment is that the cooling capacity is increased.
【００２５】〔実施例 ３〕次に、本発明の第三の実施
例を図７を参照して説明する。図７は、本発明の第三の
実施例に係る空冷歯車変速機におけるファン部を示す正
面図である。図中、図１と同一符号のものは、先の第一
の実施例と同一または同等機能のものであるから、その
説明を省略する。まず、図７に示す実施例の構成につい
て説明する。本実施例の特徴は、本発明の空冷装置が、
入力軸１および出力軸２５の両者の軸端部に設置されて
いる点である。すなわち、入力軸１側のラジアルファン
２、ファンケーシング４、ガイド２４、フィン付き潤滑
油通路８その他の構成と、出力軸２５側のラジアルファ
ン２、ファンケーシング４、ガイド２４、フィン付き潤
滑油通路８その他の構成とは同一である。[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a front view showing a fan portion of the air-cooled gear transmission according to the third embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 1 have the same or similar functions as those of the first embodiment described above, and therefore their explanations are omitted. First, the configuration of the embodiment shown in FIG. 7 will be described. The feature of this embodiment is that the air-cooling device of the present invention is
This is a point installed at the shaft ends of both the input shaft 1 and the output shaft 25. That is, the radial fan 2, the fan casing 4, the guide 24, the finned lubricating oil passage 8 and other components on the input shaft 1 side, and the radial fan 2, the fan casing 4, the guide 24, the finned lubricating oil passage on the output shaft 25 side. 8 Other configurations are the same.
【００２６】次に、動作について説明する。動作につい
ても、第一の実施例とほぼ同じである。入力軸１と出力
軸２５の軸端部の二個所の空冷装置により冷却するため
冷却能力が大きくなる効果がある。また、図示しない
が、軸端に二つ以上の空冷装置のついた空冷歯車減速機
において、空間的に遠心式または斜流式の冷却ファンを
取り付けにくい場合の空冷装置を、軸流ファンと前記フ
ィン付き潤滑油通路とで構成することができる。その結
果、付けない場合より冷却能力が上がること、または、
構成が簡単になりコストが低減すること等の効果があ
る。Next, the operation will be described. The operation is almost the same as that of the first embodiment. Since the cooling is performed by the two air cooling devices at the shaft end portions of the input shaft 1 and the output shaft 25, there is an effect that the cooling capacity is increased. Further, although not shown, in an air-cooled gear reducer having two or more air-cooling devices at the shaft end, an air-cooling device in the case where it is difficult to spatially install a centrifugal or diagonal flow type cooling fan And a lubricating oil passage with a fin. As a result, the cooling capacity will be higher than when not attached, or
There are effects such as a simple structure and cost reduction.
【００２７】〔実施例 ４〕次に、本発明の第四の実施
例を図８を参照して説明する。図８は、本発明の第四の
実施例に係る空冷歯車変速機におけるファン部の横断面
図である。図中、図１と同一符号のものは、先の第一の
実施例と同一または同等機能のものであるから、その説
明を省略する。まず、図８に示す実施例の構成について
説明する。本実施例の特徴は、フィン付き潤滑油通路８
と変速機本体９との間に断面が縮小する風路３３が設け
られている点である。その他の構成は第一の実施例と同
じである。Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a cross-sectional view of the fan portion of the air-cooled gear transmission according to the fourth embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 1 have the same or similar functions as those of the first embodiment described above, and therefore their explanations are omitted. First, the configuration of the embodiment shown in FIG. 8 will be described. The feature of this embodiment is that the lubricating oil passage 8 with fins is provided.
The point is that an air passage 33 whose cross section is reduced is provided between the transmission main body 9 and the transmission main body 9. The other structure is the same as that of the first embodiment.
【００２８】次に、動作について説明する。本実施例に
よれば、フィン付き潤滑油通路８から出た矢印２０，２
３の風を断面が縮小する風路３３を通すことにより風速
を上げた状態で変速機本体９に当てることができる。図
８に示す実施例によれば、空冷歯車減速機において、前
記ファンケーシング４の吐出口７とフィン付き潤滑油通
路８との間を結ぶ風路により軸方向に曲げられた風が、
前記フィン付き潤滑油通路８を通り、変速機内部を循環
する油を冷却したのち、さらに断面が縮小する風路３３
により風速が増し、また方向が安定して変速機本体９に
沿って勢いよく風が流れる。その結果、変速機本体９を
効率良く冷却することができ、ファン効率が向上し、フ
ァンを小形化することができる。また、風の流れを層流
に保つことができるのでファンの低騒音化を図ることが
できる等の効果がある。Next, the operation will be described. According to this embodiment, the arrows 20, 2 coming out from the finned lubricating oil passage 8
The wind of No. 3 can be applied to the transmission main body 9 in a state where the wind speed is increased by passing through the air passage 33 whose cross section is reduced. According to the embodiment shown in FIG. 8, in the air-cooled gear reducer, the wind bent in the axial direction by the air passage that connects the discharge port 7 of the fan casing 4 and the finned lubricating oil passage 8 is
An air passage 33 that reduces the cross section after cooling the oil circulating inside the transmission through the finned lubricating oil passage 8.
As a result, the wind speed increases, and the direction is stabilized, so that the wind vigorously flows along the transmission main body 9. As a result, the transmission main body 9 can be efficiently cooled, the fan efficiency is improved, and the fan can be downsized. Further, since the flow of wind can be kept laminar, there is an effect that the noise of the fan can be reduced.
【００２９】〔実施例 ５〕次に、本発明の第五の実施
例を図９を参照して説明する。図９は、本発明の第五の
実施例に係る空冷歯車変速機におけるファン部正面の縦
断面図である。図中、図１と同一符号のものは、先の第
一の実施例と同一または同等機能のものであるから、そ
の説明を省略する。まず、図９に示す実施例の構成につ
いて説明する。本実施例の特徴は、フィン付き潤滑油通
路８Ａがファンケーシング４の吐出口７Ａの外側にあ
り、その結果、風路が曲がっていないことである。その
他の構成は第一の実施例と同じである。[Fifth Embodiment] Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a vertical cross-sectional view of the front surface of the fan portion in the air-cooled gear transmission according to the fifth embodiment of the present invention. In the figure, those having the same reference numerals as those in FIG. 1 have the same or similar functions as those of the first embodiment described above, and therefore their explanations are omitted. First, the configuration of the embodiment shown in FIG. 9 will be described. The feature of this embodiment is that the finned lubricating oil passage 8A is located outside the discharge port 7A of the fan casing 4, and as a result, the air passage is not bent. The other structure is the same as that of the first embodiment.
【００３０】次に、動作について説明する。本実施例に
よれば、吐出口７Ａから出た風を風路を曲げること無く
フィン付き潤滑油通路８Ａに当てることができる。風路
を曲げる必要がないためファン効率が改善される。図９
に示す実施例によれば、空冷歯車減速機において、ファ
ンケーシング４Ａの吐出口７Ａの外側に直接または風路
を介しフィン付き潤滑油通路８Ａが結ばれており、風は
曲げられずに乱れもなく前記フィン付き潤滑油通路８Ａ
を通過する。その結果、変速機内部を循環する油を効率
良く冷却することができ、ファン効率が向上し、ファン
を小形化することができる。また、風の流れを層流に保
つことができるのでファンの低騒音化を図ることができ
る等の効果がある。Next, the operation will be described. According to this embodiment, the wind blown from the discharge port 7A can be applied to the finned lubricating oil passage 8A without bending the air passage. Fan efficiency is improved because there is no need to bend the air path. FIG.
In the air-cooled gear reducer, the finned lubricating oil passage 8A is connected to the outside of the discharge port 7A of the fan casing 4A directly or through the air passage in the air-cooled gear reducer, and the wind is not bent and is disturbed. Without the finned lubricating oil passage 8A
Pass through. As a result, the oil circulating inside the transmission can be efficiently cooled, the fan efficiency is improved, and the fan can be downsized. Further, since the flow of wind can be kept laminar, there is an effect that the noise of the fan can be reduced.
【００３１】なお、上記各実施例は、本発明をポンプ用
減速機に適用した例を説明したが、本発明の空冷装置
は、ポンプ用減速機に限らず、産業機械駆動用の歯車変
速機に汎用的に適用されるものである。In each of the above embodiments, the present invention is applied to a speed reducer for pumps. However, the air-cooling device of the present invention is not limited to speed reducers for pumps, and gear transmissions for driving industrial machines. Is generally applied to.
【００３２】[0032]
【発明の効果】以上詳細に説明したように、本発明によ
れば、変速機本体と冷却ファンとを一体化したコンパク
ト構造の空冷歯車変速機において、冷却ファンからの風
を効率的に活用することによりファンの小形化および低
騒音化を図り、小形で低騒音の空冷歯車変速機を提供す
ることができる。また、本発明によれば、軸端に二つ以
上の冷却装置を有する空冷歯車変速機において、冷却装
置の小形化および低コスト化を図ることができる。As described above in detail, according to the present invention, in the air-cooled gear transmission having a compact structure in which the transmission main body and the cooling fan are integrated, the wind from the cooling fan is efficiently utilized. As a result, the fan can be downsized and the noise can be reduced, and a small, low-noise air-cooled gear transmission can be provided. Further, according to the present invention, in the air-cooled gear transmission having two or more cooling devices at the shaft end, the cooling device can be downsized and the cost can be reduced.
【図１】本発明の一実施例に係る空冷歯車変速機におけ
るファン部正面の縦断面図である。FIG. 1 is a vertical sectional view of a front surface of a fan unit in an air-cooled gear transmission according to an embodiment of the present invention.
【図２】図１の空冷歯車変速機におけるファン部の横断
面図である。FIG. 2 is a cross-sectional view of a fan unit in the air-cooled gear transmission of FIG.
【図３】本発明の一実施例に係る図１の空冷歯車変速機
の側面図である。FIG. 3 is a side view of the air-cooled gear transmission of FIG. 1 according to an embodiment of the present invention.
【図４】図１の空冷歯車変速機におけるフィン付き潤滑
油通路の斜視図である。4 is a perspective view of a finned lubricating oil passage in the air-cooled gear transmission of FIG. 1. FIG.
【図５】フィン付き潤滑油通路の分解斜視図である。FIG. 5 is an exploded perspective view of a finned lubricating oil passage.
【図６】本発明の第二の実施例に係る空冷歯車変速機に
おけるファン部正面の縦断面図である。FIG. 6 is a vertical cross-sectional view of the front surface of the fan unit in the air-cooled gear transmission according to the second embodiment of the present invention.
【図７】本発明の第三の実施例に係る空冷歯車変速機に
おけるファン部を示す正面図である。FIG. 7 is a front view showing a fan portion of an air-cooled gear transmission according to a third embodiment of the present invention.
【図８】本発明の第四の実施例に係る空冷歯車変速機に
おけるファン部の横断面図である。FIG. 8 is a transverse cross-sectional view of a fan portion in an air-cooled gear transmission according to a fourth embodiment of the present invention.
【図９】本発明の第五の実施例に係る空冷歯車変速機に
おけるファン部正面の縦断面図である。FIG. 9 is a vertical cross-sectional view of the front surface of a fan portion of an air-cooled gear transmission according to a fifth embodiment of the present invention.
【図１０】従来の空冷歯車変速機の側面図である。FIG. 10 is a side view of a conventional air-cooled gear transmission.
１…入力軸、２…ラジアルファン、３…吸込口、４，４
Ａ…ファンケーシング、５…ノーズ部、６…スパイラル
ケーシング部、７，７Ａ…吐出口、８，８Ａ…フィン付
き潤滑油通路、９…変速機本体、２４…ガイド、２５…
出力軸、３３…風路。1 ... Input shaft, 2 ... Radial fan, 3 ... Suction port, 4, 4
A ... Fan casing, 5 ... Nose part, 6 ... Spiral casing part, 7, 7A ... Discharge port, 8, 8A ... Finned lubricating oil passage, 9 ... Transmission main body, 24 ... Guide, 25 ...
Output shaft, 33 ... Wind passage.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 磯野 昌明 茨城県土浦市神立町603番地 日立土浦エ ンジニアリング株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Isono 603, Kamidate-cho, Tsuchiura-shi, Ibaraki Hitachi Tsuchiura Engineering Co., Ltd.
Claims (5)
歯車を固定する軸と、この軸を支持する軸受と、これら
を収納するケースからなる変速機本体に、空冷手段を備
えてなる空冷歯車変速機において、 入力軸、中間軸および出力軸のうちの少なくとも一軸の
軸端に遠心式もしくは斜流式の冷却ファンを設け、前記
軸端近傍に、冷却用のフィン手段を有する潤滑油通路を
設けるとともに、 前記冷却ファンの外側に、その内周に１個所もしくは複
数個所のスパイラル状の突起を有するファンケーシング
を設け、かつ、前記ファンケーシングに１つもしくは複
数個の吐出口を設け、 前記吐出口と前記潤滑油通路との間に風路を形成したこ
とを特徴とする空冷歯車変速機。1. An air-cooled gear comprising at least a gear for speed change, a shaft for fixing the gear for speed change, a bearing for supporting the shaft, and a case for accommodating the same in a transmission main body provided with air cooling means. In a transmission, a centrifugal or mixed flow type cooling fan is provided at the shaft end of at least one of the input shaft, the intermediate shaft, and the output shaft, and a lubricating oil passage having fin means for cooling is provided near the shaft end. In addition to the cooling fan, a fan casing having one or more spiral protrusions on its inner circumference is provided on the outer side of the cooling fan, and one or more discharge ports are provided on the fan casing. An air-cooled gear transmission, wherein an air passage is formed between an outlet and the lubricating oil passage.
油通路との間に形成した風路を、当該風路の途中から軸
方向に曲げるように案内手段を設けたことを特徴とする
請求項１記載の空冷歯車変速機。2. A guide means is provided so as to bend the air passage formed between the discharge port provided in the fan casing and the lubricating oil passage in the axial direction from the middle of the air passage. 1. The air-cooled gear transmission according to 1.
縮小する風路を設けるようにしたことを特徴とする請求
項２記載の空冷歯車変速機。3. The air-cooled gear transmission according to claim 2, wherein an air passage having a reduced cross section is provided between the lubricating oil passage and the transmission main body.
に潤滑油通路を配置するように構成したことを特徴とす
る請求項１記載の空冷歯車変速機。4. The air-cooled gear transmission according to claim 1, wherein the lubricating oil passage is arranged outside the discharge port provided in the fan casing.
ずれかの軸端に二つ以上の空冷装置を有する歯車変速機
において、前記空冷装置のうち少なくとも一つを軸流フ
ァンと潤滑油通路で構成するようにしたことを特徴とす
る請求項１ないし請求項４記載のいずれかの空冷歯車変
速機。5. A gear transmission having two or more air cooling devices at any shaft end of an input shaft, an intermediate shaft and an output shaft, wherein at least one of the air cooling devices is an axial fan and a lubricating oil. The air-cooled gear transmission according to any one of claims 1 to 4, wherein the air-cooled gear transmission is constituted by a passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24032294A JP3406402B2 (en) | 1994-10-04 | 1994-10-04 | Air-cooled gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24032294A JP3406402B2 (en) | 1994-10-04 | 1994-10-04 | Air-cooled gear transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08105521A true JPH08105521A (en) | 1996-04-23 |
| JP3406402B2 JP3406402B2 (en) | 2003-05-12 |
Family
ID=17057752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24032294A Expired - Lifetime JP3406402B2 (en) | 1994-10-04 | 1994-10-04 | Air-cooled gear transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3406402B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061754A (en) * | 1996-08-13 | 1998-03-06 | Hitachi Ltd | Air-cooled gear transmission |
| JP2005308070A (en) * | 2004-04-20 | 2005-11-04 | Sumitomo Heavy Ind Ltd | Reduction gear |
| JP2013518232A (en) * | 2010-01-27 | 2013-05-20 | レックスノード インダストリーズ， エルエルシー | Transmission with fluid cooling shroud |
| WO2013146258A1 (en) * | 2012-03-29 | 2013-10-03 | 住友重機械工業株式会社 | Power transmission device |
| DE102012025597A1 (en) | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co Kg | Gear e.g. bevel gear, has fan shroud formed as nozzle in air outlet region, where nozzle is produced by adjusting rear edge of fan shroud or designed as adjusted rear edge of shroud, and adjustment has angle ranging between specific values |
| DE102012025596A1 (en) | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co Kg | Gearbox i.e. bevel gearbox, has entry region provided at axial position such that entry region surface extends only in radial and circumferential directions and exit region surface extends in radial, circumferential and axial directions |
| WO2014005666A1 (en) * | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox having a shaft and fan fitted thereon in a fan cover |
| DE102013005430A1 (en) | 2013-03-28 | 2014-10-02 | Sew-Eurodrive Gmbh & Co Kg | Gear with a shaft |
| CN104917324A (en) * | 2014-03-11 | 2015-09-16 | 住友重机械工业株式会社 | Fan cover for device |
| DE102021002637A1 (en) | 2020-06-15 | 2021-12-16 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a cooling arrangement and a fan |
-
1994
- 1994-10-04 JP JP24032294A patent/JP3406402B2/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1061754A (en) * | 1996-08-13 | 1998-03-06 | Hitachi Ltd | Air-cooled gear transmission |
| JP2005308070A (en) * | 2004-04-20 | 2005-11-04 | Sumitomo Heavy Ind Ltd | Reduction gear |
| JP2013518232A (en) * | 2010-01-27 | 2013-05-20 | レックスノード インダストリーズ， エルエルシー | Transmission with fluid cooling shroud |
| US9599406B2 (en) | 2010-01-27 | 2017-03-21 | Rexnord Industries, Llc | Transmission having a fluid cooling shroud |
| US9366332B2 (en) | 2012-03-29 | 2016-06-14 | Sumitomo Heavy Industries, Ltd. | Power transmission device |
| WO2013146258A1 (en) * | 2012-03-29 | 2013-10-03 | 住友重機械工業株式会社 | Power transmission device |
| JP2013204814A (en) * | 2012-03-29 | 2013-10-07 | Sumitomo Heavy Ind Ltd | Power transmission device |
| CN104185750B (en) * | 2012-03-29 | 2017-06-13 | 住友重机械工业株式会社 | Power transmission |
| CN104350308B (en) * | 2012-07-06 | 2017-03-15 | 索尤若驱动有限及两合公司 | There is axle and be placed in decelerator on axle, blower fan in fan shroud |
| DE102012025596A1 (en) | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co Kg | Gearbox i.e. bevel gearbox, has entry region provided at axial position such that entry region surface extends only in radial and circumferential directions and exit region surface extends in radial, circumferential and axial directions |
| US11619294B2 (en) | 2012-07-06 | 2023-04-04 | Sew-Eurodrive Gmbh & Co. Kg | Gear unit having a shaft |
| CN104350308A (en) * | 2012-07-06 | 2015-02-11 | 索尤若驱动有限及两合公司 | Gearbox having shaft and fan fitted thereon in fan cover |
| DE102012025597A1 (en) | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co Kg | Gear e.g. bevel gear, has fan shroud formed as nozzle in air outlet region, where nozzle is produced by adjusting rear edge of fan shroud or designed as adjusted rear edge of shroud, and adjustment has angle ranging between specific values |
| DE102012013351A1 (en) * | 2012-07-06 | 2014-05-08 | Sew-Eurodrive Gmbh & Co Kg | Gear with a shaft |
| AU2013286318B2 (en) * | 2012-07-06 | 2016-12-08 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox having a shaft and fan fitted thereon in a fan cover |
| WO2014005666A1 (en) * | 2012-07-06 | 2014-01-09 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox having a shaft and fan fitted thereon in a fan cover |
| US10718353B2 (en) | 2013-03-28 | 2020-07-21 | Sew-Eurodrive Gmbh & Co.Kg | Gearbox with a shaft |
| DE102013005430A1 (en) | 2013-03-28 | 2014-10-02 | Sew-Eurodrive Gmbh & Co Kg | Gear with a shaft |
| WO2014154316A1 (en) | 2013-03-28 | 2014-10-02 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox with a shaft |
| CN104917324A (en) * | 2014-03-11 | 2015-09-16 | 住友重机械工业株式会社 | Fan cover for device |
| DE102021002637A1 (en) | 2020-06-15 | 2021-12-16 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a cooling arrangement and a fan |
| WO2021254657A1 (en) | 2020-06-15 | 2021-12-23 | Sew-Eurodrive Gmbh & Co. Kg | Transmission comprising a cooling arrangement and a fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3406402B2 (en) | 2003-05-12 |
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