JPH06284633A - Belt driven motor - Google Patents
Belt driven motorInfo
- Publication number
- JPH06284633A JPH06284633A JP6714693A JP6714693A JPH06284633A JP H06284633 A JPH06284633 A JP H06284633A JP 6714693 A JP6714693 A JP 6714693A JP 6714693 A JP6714693 A JP 6714693A JP H06284633 A JPH06284633 A JP H06284633A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- belt
- pulley
- driving
- 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.)
- Pending
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は軸の運転側にプーリを
取付けるベルト駆動用の電動機に関し、運転側軸受の軸
受荷重を軽減できるものに係わる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor for driving a belt, in which a pulley is mounted on the driving side of a shaft, which can reduce the bearing load of a driving side bearing.
【０００２】[0002]
【従来の技術】図４は従来例１の片側断面図、図５は従
来例２の運転側軸受装置の半断面図、図６は従来例３の
片側断面図である。以下、各図において同一符号をつけ
るものはおよそ同一機能を持ち、重複説明を省くことも
ある。図４において、電動機の一対のブラケット１ａ、
１ｂに取付けた運転側軸受Ａ及び反運転側軸受Ｂで支承
される軸２に回転子３を固定し、両ブラケットを支持す
るフレーム４に筒状の固定子５を固定する。両ブラケッ
ト１ａ、１ｂのいずれかはフレーム４と一体でもよい。
運転側のブラケット１ａから突出する軸２の端部にプー
リ６を、オーバハングさせて取付け、Ｖベルトなどのベ
ルト７を巻き掛ける。ベルト７によるベルト荷重をＰと
する。小形の電動機で、軸受のｄ・ｎ値（軸受内径ｄｍ
ｍ×回転数ｎｒｐｍ）が約２０ないし３０万以下なら
ば、運転側軸受Ａはグリス潤滑のころがり軸受が使用さ
れる。ｄ・ｎ値がこれを越えれば、運転側軸受Ａは油潤
滑される。2. Description of the Related Art FIG. 4 is a half sectional view of a conventional example 1, FIG. 5 is a half sectional view of a driving side bearing device of a conventional example 2, and FIG. In the following description, the components denoted by the same reference numerals in each figure have approximately the same function, and duplicated explanation may be omitted. In FIG. 4, a pair of brackets 1a of the electric motor,
A rotor 3 is fixed to a shaft 2 supported by a driving side bearing A and a non-driving side bearing B attached to 1b, and a tubular stator 5 is fixed to a frame 4 supporting both brackets. Either of the brackets 1a and 1b may be integrated with the frame 4.
A pulley 6 is attached to the end portion of the shaft 2 protruding from the bracket 1a on the driving side by overhanging, and a belt 7 such as a V belt is wound around the pulley 6. The belt load by the belt 7 is P. With a small electric motor, the d / n value of the bearing (bearing inner diameter dm
If m × rotational speed nrpm) is about 200 to 300,000 or less, a grease-lubricated rolling bearing is used as the running-side bearing A. When the d · n value exceeds this value, the running side bearing A is lubricated with oil.
【０００３】図５に示す従来例２は、油潤滑される運転
側軸受装置である。図において、ブラケット１ａに対し
て軸２を支承する運転側軸受Ａの軸方向前後に、複数の
ラビリンス９１を持つ一対の油槽９２ａ、９２ｂが油密
に設けられ、適量の油９３を溜める。説明を省くが図示
する又は図示しない他の部材や加工も必要であり、油潤
滑の軸受構造は、グリス潤滑の軸受構造よりはるかに複
雑、高価であり、保守に手間がかかる。Conventional example 2 shown in FIG. 5 is an oil-lubricated operating side bearing device. In the figure, a pair of oil tanks 92a and 92b having a plurality of labyrinths 91 are oil-tightly provided in the front and rear in the axial direction of the operation side bearing A that supports the shaft 2 with respect to the bracket 1a, and store an appropriate amount of oil 93. Although omitted from the description, other components and processes are shown or not shown, and the oil-lubricated bearing structure is much more complicated and expensive than the grease-lubricated bearing structure, and requires a lot of maintenance.
【０００４】図６に示す従来例３は、第３軸受で運転側
軸受の荷重を軽減させ、ｄ・ｎ値を限界以下にしてグリ
ス潤滑を使用するものである。図において、延長した軸
９５の端部の第３軸受Ｃを取付けた軸受スタンド９６
は、電動機との共通台床９７に据え付けられる。ベルト
荷重Ｐは第３軸受Ｃも負担するので、運転側軸受Ａの軸
受荷重が大幅に軽減する。しかし、共通台床９７は剛性
が高く大形である。また、３個の軸受の芯だしが必要で
あり、軸受スタンド９６と共通台床９７との間の４隅に
適宜な枚数の薄板９８をかますなどの作業に相当な熟練
を必要とする。芯だしの作業が不適切だと、設置して数
日で電動機が破損することもある。Prior art example 3 shown in FIG. 6 uses grease lubrication by reducing the load on the operating side bearing by the third bearing and keeping the d · n value below the limit. In the figure, a bearing stand 96 to which the third bearing C at the end of the extended shaft 95 is attached
Are installed on a common base 97 with the electric motor. Since the belt load P is also borne by the third bearing C, the bearing load of the driving side bearing A is significantly reduced. However, the common base 97 has a high rigidity and a large size. Further, it is necessary to center three bearings, and a considerable amount of skill is required for work such as bracing an appropriate number of thin plates 98 at four corners between the bearing stand 96 and the common base 97. If the centering work is improper, the electric motor may be damaged within a few days after installation.
【０００５】[0005]
【発明が解決しようとする課題】前記の従来例におい
て、電動機が小形であっても、プーリ６の直径に対して
従動側プーリの直径がかなり大きい高減速比、高トルク
の場合がある。そうすると、プーリ６のベルト荷重Ｐが
大きくなって運転側軸受Ａの軸受荷重が大きくなる。こ
のため、軸２及び運転側軸受Ａの直径が大きくなり、限
界ｄ・ｎ値を越えるので、油潤滑方式又は第３軸受方式
を使用せざるを得ない。電動機が大形になれば当然に油
潤滑方式又は第３軸受方式を使用する。ところが、油潤
滑方式は構造が複雑、高価であり、保守に手間を要す
る。また、第３軸受方式は大形の共通台床を必要とし、
３個の軸受の芯だしの作業に熟練を要する。In the above-mentioned conventional example, even if the electric motor is small, there is a case where the diameter of the driven pulley is considerably larger than the diameter of the pulley 6 so that the reduction ratio and the torque are high. Then, the belt load P of the pulley 6 is increased and the bearing load of the driving side bearing A is increased. For this reason, the diameter of the shaft 2 and the bearing A on the operating side becomes large and exceeds the limit d · n value, so that the oil lubrication method or the third bearing method must be used. If the electric motor becomes large, the oil lubrication method or the third bearing method is naturally used. However, the oil lubrication system has a complicated structure and is expensive, and requires maintenance. In addition, the third bearing system requires a large common base,
Skilled work is required for centering the three bearings.
【０００６】この発明の目的は、ベルト荷重や電動機が
大きくなっても、運転側軸受の直径が小径でｄ・ｎ値が
小さく、グリス潤滑が可能となり、第３軸受の芯だし作
業の困難性を回避できるベルト駆動用の電動機を提供す
ることにある。An object of the present invention is that even if the belt load or the electric motor is increased, the diameter of the bearing on the driving side is small and the d / n value is small, and grease lubrication is possible, which makes it difficult to center the third bearing. An object of the present invention is to provide an electric motor for driving a belt that can avoid the above.
【０００７】[0007]
【課題を解決するための手段】この発明１のベルト駆動
用の電動機は、一対のブラケットに取付けた運転側軸受
及び反運転側軸受で支承される軸に回転子を固定し、前
記両ブラケットを支持するフレームに筒状の固定子を固
定し、前記軸の運転側にプーリを取付けるベルト駆動用
の電動機において、前記フレームに対して前記運転側の
ブラケットを着脱可能に取付け、この運転側のブラケッ
トと前記回転子との間に前記プーリを配置し、このプー
リに巻き掛けて引き出すベルトに対応する位置の前記ブ
ラケット又は前記フレームにベルト穴を開設するもので
ある。SUMMARY OF THE INVENTION In a belt driving electric motor according to the first aspect of the present invention, a rotor is fixed to a shaft supported by a driving side bearing and a non-driving side bearing mounted on a pair of brackets, and the both brackets are fixed to each other. In a belt driving electric motor in which a tubular stator is fixed to a supporting frame and a pulley is attached to the operating side of the shaft, the operating side bracket is detachably attached to the frame, and the operating side bracket is attached. And the rotor, the pulley is arranged between the rotor and the rotor, and a belt hole is formed in the bracket or the frame at a position corresponding to a belt wound around the pulley and pulled out.
【０００８】このとき、発明２で前記運転側のブラケッ
トを、軸受箱とその外周の環状部とに分割して着脱可能
にしたり、発明３で前記プーリと前記回転子との間の前
記軸に回転円板を固定し、この回転円板の径方向に空隙
を持つ環状支持板を前記フレームに固定したりする。At this time, in Invention 2, the operating side bracket is divided into a bearing box and an outer peripheral annular portion so as to be detachable, or in Invention 3, the shaft between the pulley and the rotor is attached. A rotating disk is fixed, and an annular support plate having a gap in the radial direction of the rotating disk is fixed to the frame.
【０００９】[0009]
【作用】発明１によれば、運転側軸受の内側にプーリを
配置するので、プーリをオーバハングさせるものに比
べ、ベルト荷重による運転側軸受の軸受荷重も軸の直径
も小さくなる。このため、運転側軸受が小形になって軸
受のｄ・ｎ値が下がり、油潤滑しなければならないもの
がグリス潤滑でよいようになる。特に、軸の最大応力に
余裕があるが、従動側プーリの直径ががかなり大きい高
減速比、高トルクの場合であって、軸受荷重によって運
転側軸受の大きさが決まるような場合に有利となる。軸
は運転側軸受と反運転側軸受との２点で支持されて第３
軸受の芯だし作業がなくなる。使用中、プーリと従動プ
ーリに巻き掛けられるベルトはベルト穴を通る。ベルト
を取り出すには、ブラケットをフレームから外し、ベル
トの丸まった端部を軸端の周りを脱ぐように引き回して
からベルト穴から引き抜けばよい。ベルトを巻き掛ける
ときにはこの逆の手順となる。According to the first aspect of the invention, since the pulley is arranged inside the driving side bearing, the bearing load of the driving side bearing and the shaft diameter due to the belt load are smaller than those in which the pulley is overhung. For this reason, the running-side bearing is downsized, the d · n value of the bearing is reduced, and grease lubrication is sufficient for oil lubrication. Especially, there is a margin in the maximum stress of the shaft, but it is advantageous when the driven pulley has a considerably large diameter and has a high reduction ratio and high torque, and the size of the operating bearing is determined by the bearing load. Become. The shaft is supported at two points, that is, the bearing on the driving side and the bearing on the non-driving side.
Bearing centering work is eliminated. During use, the belt wound around the pulley and the driven pulley passes through the belt hole. To remove the belt, remove the bracket from the frame, pull the rounded end of the belt around the shaft end, and pull it out of the belt hole. When wrapping the belt, the procedure is reversed.
【００１０】このとき、発明２によれば、環状部のみを
フレーム及び軸受箱から外し、ベルトの丸まった端部を
軸に取付けた軸受箱の周りを脱ぐように引き回してから
ベルト穴から引き抜けるので、軸受箱や運転側軸受を軸
から分解する作業を必要としない。発明３によれば、ブ
ラケット又は環状部を外すと、運転側軸受で支えられて
いた軸の運転側は支持を失うが、回転円板が空隙だけ沈
下して環状支持板で仮保持され、固定子と回転子とが接
触しない。At this time, according to the second aspect of the invention, only the annular portion is removed from the frame and the bearing box, and the rounded end portion of the belt is pulled out around the bearing box mounted on the shaft and then pulled out from the belt hole. No need to disassemble the bearing box or the driving side bearing from the shaft. According to the invention 3, when the bracket or the annular portion is removed, the operating side of the shaft supported by the operating side bearing loses its support, but the rotating disc sinks only by the gap and is temporarily held by the annular supporting plate and fixed. The child does not come into contact with the rotor.
【００１１】[0011]
【実施例】図１は実施例の片側断面図、図２は図１のＡ
−Ａ断面図であり、図３は図１と図４を比較する荷重及
び曲げモーメント図である。図１及び図２において、電
動機の一対のブラケット１１ａ、１ｂに取付けた運転側
軸受Ａ及び反運転側軸受Ｂで支承される軸１２に回転子
３を固定し、両ブラケットを支持するフレーム４に筒状
の固定子５を固定する。実施例の特徴として、フレーム
４に対して運転側のブラケット１１ａを着脱可能に取付
け、プーリ６を運転側のブラケット１１ａと回転子３と
の間に配置して軸１２に取付ける。このプーリ６に巻き
掛けて引き出すベルト７に対応する位置のフレーム４に
ベルト穴１３を開設する。運転側のブラケット１１ａ
を、軸受箱１１ｍとその外周の環状部１１ｎとに分割し
て着脱可能にする。また、プーリ６と回転子３との間の
軸１２に回転円板１４を固定し、この回転円板１４の径
方向に空隙１５を持つ環状支持板１６をフレーム４に固
定する。フレーム４が図のＦ部までで、その左側の部分
がブラケット１１ａと一体ならば、前記ベルト穴１３を
当然にこのブラケットに開設する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional view of one side of an embodiment, and FIG.
FIG. 3 is a sectional view taken along line A, and FIG. 3 is a load and bending moment diagram comparing FIG. 1 and FIG. 4. 1 and 2, a rotor 3 is fixed to a shaft 12 supported by a driving side bearing A and a non-driving side bearing B attached to a pair of brackets 11a and 1b of an electric motor, and a frame 4 supporting both brackets is mounted on the shaft 12. The cylindrical stator 5 is fixed. A feature of the embodiment is that the driving side bracket 11a is detachably attached to the frame 4, and the pulley 6 is disposed between the driving side bracket 11a and the rotor 3 and attached to the shaft 12. A belt hole 13 is formed in the frame 4 at a position corresponding to the belt 7 wound around the pulley 6 and pulled out. Driving side bracket 11a
Is divided into a bearing box 11m and an annular portion 11n on the outer periphery of the bearing box 11m so as to be detachable. A rotary disc 14 is fixed to the shaft 12 between the pulley 6 and the rotor 3, and an annular support plate 16 having a gap 15 in the radial direction of the rotary disc 14 is fixed to the frame 4. If the frame 4 is up to the portion F in the figure and the left side portion is integral with the bracket 11a, the belt hole 13 is naturally opened in this bracket.
【００１２】図３に基づいて、運転側軸受Ａの軸受荷重
の有利性を説明する。図において、（ｘ）は図１の実施
例の場合、（ｙ）は図４の従来例１の場合である。
（ｘ）において、運転側軸受Ａと反運転側軸受Ｂとで支
持される軸１２の運転側軸受Ａから距離ａだけ内側にベ
ルト荷重Ｐが加われば、反運転側軸受Ｂからの距離をｂ
として、運転側軸受Ａの軸受荷重Ｒa 、最大曲げモーメ
ントＭは、 Ｒa ＝ｂＰ／（ａ＋ｂ） …………（１） Ｍ＝ａｂＰ／（ａ＋ｂ） …………（２） （ｙ）において、運転側軸受Ａと反運転側軸受Ｂとで支
持される軸２の運転側軸受Ａから距離ａだけ外側にベル
ト荷重Ｐがオーバハングして加われば、運転側軸受Ａと
反運転側軸受Ｂとの距離をｂとして、運転側軸受Ａの軸
受荷重Ｒa 、最大曲げモーメントＭは、 Ｒa ＝（ａ＋ｂ）Ｐ／ｂ …………（３） Ｍ＝ａＰ …………（４） 従来例（ｙ）に対する実施例（ｘ）の運転側軸受Ａの軸
受荷重Ｒa の減少率ｒは式（１）を式（３）で割って得
られ、Ｍの減少率ｍは式（２）を式（４）で割ってそれ
ぞれ得られ、 ｒ＝ｂ2 ／（ａ＋ｂ）2 …………（５） ｍ＝ｂ／（ａ＋ｂ） …………（６） であり、ｒ＜１、ｍ＜１となる。このため、運転側軸受
Ａの軸受荷重Ｒa 、最大曲げモーメントＭは、実施例
（ｘ）の場合において、確実に減少する。そして、軸の
最大応力σは、軸の直径ｄ、断面係数Ｚとして、 σ＝Ｍ／Ｚ＝３２Ｍ／πｄ3 ∴ ｄ＝（３２Ｍ／πσ）1/3 最大応力σを同一にするという条件で、 ｄ∝Ｍ1/3 ∴ ｄ∝〔ｂ／（ａ＋ｂ）〕1/3 …………（７） となり、Ｍが減少すればｄも細くできる。〔ｄの減少
率〕＜１である。The advantage of the bearing load of the running side bearing A will be described with reference to FIG. In the figure, (x) is the case of the embodiment of FIG. 1, and (y) is the case of the conventional example 1 of FIG.
In (x), if the belt load P is applied to the inner side of the operating side bearing A of the shaft 12 supported by the operating side bearing A and the non-operating side bearing B by a distance a, the distance from the anti-operating side bearing B is changed to b.
The bearing load R a and the maximum bending moment M of the operating side bearing A are R a = bP / (a + b) ………… (1) M = abP / (a + b) ………… (2) (y) In the above, if the belt load P overhangs by a distance a from the driving side bearing A of the shaft 2 supported by the driving side bearing A and the counter driving side bearing B, the driving side bearing A and the counter driving side bearing B are added. The bearing load R a and the maximum bending moment M of the operating side bearing A are R a = (a + b) P / b ………… (3) M = aP ………… (4) Conventional The reduction rate r of the bearing load R a of the running side bearing A of the example (x) with respect to the example (y) is obtained by dividing the equation (1) by the equation (3), and the reduction rate m of M is obtained by the equation (2). Is obtained by dividing each by the equation (4), and r = b 2 / (a + b) 2 ………… (5) m = b / (a + b) ………… (6) Yes, r <1 and m <1. For this reason, the bearing load Ra and the maximum bending moment M of the running-side bearing A surely decrease in the case of the embodiment (x). The maximum stress σ of the shaft is σ = M / Z = 32M / πd 3 ∴d = (32M / πσ) 1/3 maximum stress σ, where the shaft diameter d and the section modulus Z are the same. , D∝M 1/3 ∴d∝ [b / (a + b)] 1/3 (7), and if M decreases, d can also be reduced. [Reduction rate of d] <1.
【００１３】結局、運転側軸受Ａの内側にプーリ６を配
置する図１の実施例は、運転側軸受Ａの外側にプーリ６
をオーバハングさせて配置する図４の従来例に比べ、ベ
ルト荷重Ｐによる運転側軸受Ａの軸受荷重Ｒa も軸の直
径ｄも小さくなる。このため、運転側軸受Ａが小形にな
って軸受のｄ・ｎ値が下がり、油潤滑しなければならな
いものがグリス潤滑でよいようになる。特に、軸の最大
応力σに余裕があるが、従動側プーリの直径がかなり大
きい高減速比、高トルクの場合であって、軸受荷重Ｒa
によって運転側軸受Ａの大きさが決まるような場合に有
利である。なお、ａ：ｂ＝３：１０としたときの一般的
な例の場合に、ｒは５９．２％、ｍは７６．９％、ｄは
９１．７％と計算される。なお、（ｘ）と（ｙ）との場
合において、ａとｂとは当然に多少異なるし、また反運
転側軸受荷重Ｒb については説明を必要としない。After all, in the embodiment of FIG. 1 in which the pulley 6 is arranged inside the driving side bearing A, the pulley 6 is arranged outside the driving side bearing A.
Was overhang compared to the conventional example of FIG. 4 to be arranged, also reduced the diameter d of the bearing load R a also the axis of the driving-side bearing A by the belt load P. For this reason, the bearing A on the driving side becomes small in size, the d · n value of the bearing decreases, and grease lubrication can be used for those that must be oil lubricated. In particular, when the maximum stress σ of the shaft has a margin, but the diameter of the driven pulley is considerably large and the reduction ratio and the torque are high, the bearing load R a
This is advantageous when the size of the driving side bearing A is determined by the above. In the case of a general example where a: b = 3: 10, r is calculated to be 59.2%, m is calculated to be 76.9%, and d is calculated to be 91.7%. In the cases of (x) and (y), a and b are of course slightly different, and the bearing load R b on the non-driving side need not be described.
【００１４】図１及び図２に戻って実施例の取扱い方法
について説明する。ベルト７を取り出すときには、環状
部１１ｎをフレーム４及び軸受箱１１ｍから外し、ベル
ト７の丸まった端部を軸１２に取付けた軸受箱１１ｍの
周りを脱ぐように引き回してからベルト穴１３から引き
抜けばよい。ベルト７を新たに巻き掛けるときには、こ
の逆の手順となる。もっとも、損傷したベルトを取り出
すときはベルトを切断するのが早い。環状部１１ｎを外
すと、運転側軸受Ａで支えられていた軸１２の運転側は
支持を失うが、回転円板１４が空隙１５だけ沈下して環
状支持板１６で仮保持される。ベルト７の交換のみのと
きには、軸受箱１１ｍや運転側軸受Ａを軸１２から分解
する作業を必要としない。当然に、軸受箱１１ｍや運転
側軸受Ａの保守は従来と同一にできる。回転円板１４と
環状支持板１６とは防塵性も兼ねる。Returning to FIGS. 1 and 2, the handling method of the embodiment will be described. When the belt 7 is taken out, the annular portion 11n is removed from the frame 4 and the bearing box 11m, and the rounded end of the belt 7 is pulled out around the bearing box 11m attached to the shaft 12 and then pulled out from the belt hole 13. Good. When the belt 7 is newly wound, the reverse procedure is performed. However, it is faster to cut the belt when removing the damaged belt. When the annular portion 11n is removed, the operating side of the shaft 12 supported by the operating side bearing A loses its support, but the rotating disk 14 sinks only by the gap 15 and is temporarily held by the annular supporting plate 16. When only the belt 7 is replaced, there is no need to disassemble the bearing housing 11m and the driving side bearing A from the shaft 12. Naturally, the maintenance of the bearing housing 11m and the operating side bearing A can be performed in the same manner as in the conventional case. The rotating disc 14 and the annular support plate 16 also have a dustproof property.
【００１５】ベルト７の交換作業のために、ブラケット
１１ａを軸受箱１１ｍと環状部１１ｎとに分割すること
は、必須要件ではない。軸受箱１１ｍと環状部１１ｎと
が一体になった通常のブラケットをフレーム４から外す
ことができるのであるから、ブラケットを外してベルト
７をベルト穴１３から引き抜くだけでよい。ただこのと
き、不必要な運転側軸受Ａとその周辺の部材まで分解す
る手間が要る。また、回転円板１４と環状支持板１６も
必須要件ではない。固定子５の内周で回転子３の外周を
仮保持できる。ただこのとき、固定子５や回転子３を損
傷する恐れがある。It is not essential to divide the bracket 11a into the bearing housing 11m and the annular portion 11n for the replacement work of the belt 7. Since a normal bracket in which the bearing box 11m and the annular portion 11n are integrated can be removed from the frame 4, it is only necessary to remove the bracket and pull out the belt 7 from the belt hole 13. However, at this time, it is necessary to disassemble the unnecessary operating side bearing A and the members around it. Further, the rotating disk 14 and the annular support plate 16 are not essential requirements. The inner circumference of the stator 5 can temporarily hold the outer circumference of the rotor 3. However, at this time, the stator 5 and the rotor 3 may be damaged.
【００１６】[0016]
【発明の効果】発明１のベルト駆動用の電動機によれ
ば、運転側軸受の内側にプーリを配置するので、ベルト
荷重による運転側軸受の軸受荷重も軸の直径も小さくな
り、運転側軸受が小形になって軸受のｄ・ｎ値が下が
り、油潤滑しなければならないものがグリス潤滑でよい
ようになるという効果がある。特に、軸受荷重によって
運転側軸受の大きさが決まるような場合に有利であると
いう効果がある。軸は２個の軸受で支持されて第３軸受
の芯だし作業がなくなるという効果があり、ベルトの交
換も簡単であるという効果がある。According to the electric motor for driving the belt of the first aspect of the invention, since the pulley is arranged inside the driving side bearing, the bearing load of the driving side bearing due to the belt load and the diameter of the shaft are reduced, and the driving side bearing is reduced. There is an effect that the bearing is downsized and the d · n value of the bearing is lowered, and that grease lubrication can be used for those that must be oil lubricated. In particular, there is an effect that it is advantageous when the size of the operating side bearing is determined by the bearing load. Since the shaft is supported by two bearings, there is an effect that the centering work of the third bearing is eliminated, and there is an effect that the belt can be easily replaced.
【００１７】このとき、発明２によれば、環状部のみを
外してベルトの交換ができ、軸受箱や運転側軸受を軸か
ら分解する作業を必要としないという効果がある。発明
３によれば、ブラケット又は環状部を外しても、軸の運
転側は回転円板と環状支持板により仮保持され、固定子
と回転子とが接触して損傷する恐れがないという効果が
ある。At this time, according to the second aspect of the invention, the belt can be exchanged by removing only the annular portion, and there is an effect that it is not necessary to disassemble the bearing box and the driving side bearing from the shaft. According to the third aspect of the invention, even if the bracket or the annular portion is removed, the operating side of the shaft is temporarily held by the rotating disc and the annular supporting plate, and the stator and the rotor are not in contact with each other and are not likely to be damaged. is there.
【図１】実施例の片側断面図FIG. 1 is a side sectional view of an embodiment
【図２】図１のＡ−Ａ断面図FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１と図４を比較する荷重及び曲げモーメント
図FIG. 3 is a load and bending moment diagram comparing FIG. 1 and FIG.
【図４】従来例１の片側断面図FIG. 4 is a side cross-sectional view of Conventional Example 1.
【図５】従来例２の運転側軸受装置の半断面図FIG. 5 is a half cross-sectional view of a driving side bearing device of Conventional Example 2.
【図６】従来例３の片側断面図FIG. 6 is a one-sided sectional view of Conventional Example 3.
１ａ ブラケット １ｂ ブラケッ
ト ２ 軸 ３ 回転子 ４ フレーム ５ 固定子 ６ プーリ ７ ベルト １１ａ ブラケット １１ｍ 軸受箱 １１ｎ 環状部 １２ 軸 １３ ベルト穴 １４ 回転円
板 １５ 空隙 １６ 環状支
持板 Ａ 運転側軸受 Ｂ 反運転側
軸受 Ｃ 第３軸受 Ｍ 最大曲げ
モーメント Ｐ ベルト荷重 Ｒa 軸受荷重1a Bracket 1b Bracket 2 Shaft 3 Rotor 4 Frame 5 Stator 6 Pulley 7 Belt 11a Bracket 11m Bearing box 11n Annular part 12 Axis 13 Belt hole 14 Rotating disc 15 Gap 16 Annular support plate A Driving side bearing B Non-driving side bearing C 3rd bearing M Maximum bending moment P Belt load R a Bearing load
Claims (3)
び反運転側軸受で支承される軸に回転子を固定し、前記
両ブラケットを支持するフレームに筒状の固定子を固定
し、前記軸の運転側にプーリを取付けるベルト駆動用の
電動機において、前記フレームに対して前記運転側のブ
ラケットを着脱可能に取付け、この運転側のブラケット
と前記回転子との間に前記プーリを配置し、このプーリ
に巻き掛けて引き出すベルトに対応する位置の前記ブラ
ケット又は前記フレームにベルト穴を開設することを特
徴とするベルト駆動用の電動機。Claim: What is claimed is: 1. A rotor is fixed to a shaft supported by a bearing on the driving side and a bearing on the non-driving side mounted on a pair of brackets, and a tubular stator is fixed to a frame that supports both brackets. In a belt-driving electric motor for mounting a pulley on the driving side, the driving-side bracket is detachably attached to the frame, and the pulley is arranged between the driving-side bracket and the rotor. An electric motor for driving a belt, wherein a belt hole is formed in the bracket or the frame at a position corresponding to a belt wound around a pulley and pulled out.
いて、前記運転側のブラケットを、軸受箱とその外周の
環状部とに分割して着脱可能にすることを特徴とするベ
ルト駆動用の電動機。2. The belt driving electric motor according to claim 1, wherein the driving side bracket is divided into a bearing box and an annular portion on the outer periphery thereof so as to be detachable. Electric motor.
機において、前記プーリと前記回転子との間の前記軸に
回転円板を固定し、この回転円板の径方向に空隙を持つ
環状支持板を前記フレームに固定することを特徴とする
ベルト駆動用の電動機。3. The belt driving electric motor according to claim 1, wherein a rotating disc is fixed to the shaft between the pulley and the rotor, and a gap is provided in a radial direction of the rotating disc. An electric motor for driving a belt, wherein an annular support plate is fixed to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6714693A JPH06284633A (en) | 1993-03-26 | 1993-03-26 | Belt driven motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6714693A JPH06284633A (en) | 1993-03-26 | 1993-03-26 | Belt driven motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06284633A true JPH06284633A (en) | 1994-10-07 |
Family
ID=13336485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6714693A Pending JPH06284633A (en) | 1993-03-26 | 1993-03-26 | Belt driven motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06284633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351046B1 (en) * | 2000-01-13 | 2002-02-26 | Delphi Technologies, Inc. | Compact dynamoelectric machine |
| JP2017017959A (en) * | 2015-07-06 | 2017-01-19 | ファナック株式会社 | Electric motor with shaft support device detachably attached to the body of the electric motor and shaft support device |
-
1993
- 1993-03-26 JP JP6714693A patent/JPH06284633A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6351046B1 (en) * | 2000-01-13 | 2002-02-26 | Delphi Technologies, Inc. | Compact dynamoelectric machine |
| JP2017017959A (en) * | 2015-07-06 | 2017-01-19 | ファナック株式会社 | Electric motor with shaft support device detachably attached to the body of the electric motor and shaft support device |
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