JPS5834260A - Abnormal-load detector - Google Patents
Abnormal-load detectorInfo
- Publication number
- JPS5834260A JPS5834260A JP13041381A JP13041381A JPS5834260A JP S5834260 A JPS5834260 A JP S5834260A JP 13041381 A JP13041381 A JP 13041381A JP 13041381 A JP13041381 A JP 13041381A JP S5834260 A JPS5834260 A JP S5834260A
- Authority
- JP
- Japan
- Prior art keywords
- driving body
- rotating shaft
- driven body
- driving
- driven
- 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
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
- F16H35/00—Gearings or mechanisms with other special functional features
- F16H35/10—Arrangements or devices for absorbing overload or preventing damage by overload
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
- F16D43/2022—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with at least one part moving axially between engagement and disengagement
- F16D43/2024—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with at least one part moving axially between engagement and disengagement the axially moving part being coaxial with the rotation, e.g. a gear with face teeth
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、回転軸Kかかる異常負荷を検出する異常負荷
検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an abnormal load detection device for detecting an abnormal load applied to a rotating shaft K.
従来から、回転軸を回転させる丸めの駆動手段に用いる
モータに流れる電流の値を測定して回転軸の異常負荷を
検出する異常負荷検出装置が知られている。2. Description of the Related Art Conventionally, an abnormal load detection device has been known that detects an abnormal load on a rotating shaft by measuring the value of a current flowing through a motor used as a round drive means for rotating the rotating shaft.
しかしながら、モータに流れる電流は、回転軸の回転負
荷の増大に対して変化が少ないために、その変化を検出
することが困難である。このため、上記の異常負荷検出
装置は異常負荷の検出が遅れたり、未検知となることが
あり、回転軸あるいはその周辺の部品の破損や摩耗を生
じさせることがあるという欠点を有している。However, since the current flowing through the motor does not change much with respect to an increase in the rotational load on the rotating shaft, it is difficult to detect the change. For this reason, the abnormal load detection device described above has the drawback that abnormal load detection may be delayed or may not be detected, which may cause damage or wear to the rotating shaft or parts around it. .
本発明の目的は、上記の欠点を解消することのできる異
常負荷検出装置を提供することにある。An object of the present invention is to provide an abnormal load detection device that can eliminate the above-mentioned drawbacks.
本発明は、端面が1または複数の凸部および凹部を有す
ると共にこれらの間に傾斜面または湾−面を形成された
駆動体を回転軸に対し回転可能および長手方向へ摺動可
能に取り付け、この駆動体の端間と嵌合可能な端面を有
する従動体を回転軸に固定し、駆動体を弾性体によって
従動体に対してそれぞれの端面が嵌合するように圧接さ
せ、駆動手段によって回転される駆動体の回転力を従動
体を介して回転軸に伝達し、回転軸に所定以上の回転負
荷がかかる場合K、駆動体が従動体の傾斜面または湾曲
面に沿って摺動しながら回転して回転軸の長手方向に移
動し、かつ、この駆動体の移動量を検出する検出手段を
設けることを4?黴とする。The present invention provides a drive body having an end surface having one or more convex portions and concave portions and an inclined surface or a curved surface formed therebetween, which is attached rotatably and slidably in the longitudinal direction with respect to a rotating shaft, A driven body having an end face that can be fitted between the ends of the driving body is fixed to a rotating shaft, and the driving body is pressed against the driven body by an elastic body so that each end face fits, and is rotated by a driving means. When the rotational force of the driving body is transmitted to the rotating shaft via the driven body, and a rotational load of more than a predetermined value is applied to the rotating shaft, the driving body slides along the inclined or curved surface of the driven body. 4? Providing a detection means that rotates and moves in the longitudinal direction of the rotating shaft and detects the amount of movement of this driving body? Make it moldy.
以下に図示した実施例に基づいて本発明の詳細な説明す
る。The present invention will be described in detail below based on the illustrated embodiments.
第1図において符号1は回転軸を示している。In FIG. 1, reference numeral 1 indicates a rotation axis.
この回転軸1の一端部には保持体2がねじKよって固定
して配置されている。この保持体2から回転軸1の他端
部方向に所定間隔をおいて従動体3がねじKよって固定
されており、この従動体3と上記保持体2との間には駆
動体4が回転軸IK摺動および回転可能に配置されてい
る。この駆動体4は第2図に示すようにチェーン5によ
って図示していない駆動手段に連結されており、駆動手
段の矢印a方向の回転力がチェーン5を介して駆動体4
に伝達されて駆動体4が回転される。この駆動体4の従
動体3と対向する端面は第3図に示すように凸部4mお
よび凹部4bが形成されており、各凸部4aと凹$4b
との間の端面は傾斜面にそれぞれ形成きれている。これ
らの傾斜面は、駆動体4の矢印す方向の正回転に対して
第4図和水すように、回転角と端間の高さの関係をとる
と、凹部4bから凸部411に向う傾斜面4Cの傾斜角
を01とし、凸部4aから凹部4bに向う傾斜面4dの
傾斜角な02とすれば、θ1〈θ2の関係となっている
。上記従動体3の駆動体4と対向する端面は、駆動体4
の凹凸状の端面と嵌合可能に形成されており、これらの
端面は、駆動体4と保持体2との間に配置された抑圧用
のスプリング6によって所定圧力で嵌合するように圧接
される。A holder 2 is fixedly disposed at one end of the rotating shaft 1 with a screw K. As shown in FIG. A driven body 3 is fixed by a screw K at a predetermined distance from this holder 2 toward the other end of the rotating shaft 1, and a driving body 4 rotates between this driven body 3 and the holder 2. Axis IK is slidably and rotatably arranged. As shown in FIG. 2, this driving body 4 is connected to a driving means (not shown) by a chain 5, and the rotational force of the driving means in the direction of arrow a is transmitted to the driving body 4 through the chain 5.
The driving body 4 is rotated. As shown in FIG. 3, the end surface of the driving body 4 facing the driven body 3 is formed with a convex portion 4m and a concave portion 4b.
The end surfaces between the two are each formed into an inclined surface. These inclined surfaces move from the concave portion 4b toward the convex portion 411 when the relationship between the rotation angle and the height between the ends is taken as shown in FIG. If the inclination angle of the inclined surface 4C is 01, and the inclination angle of the inclined surface 4d from the convex portion 4a to the concave portion 4b is 02, then the relationship θ1<θ2 is established. The end face of the driven body 3 facing the drive body 4 is
These end surfaces are pressed together by a suppressing spring 6 disposed between the driving body 4 and the holding body 2 so as to fit with a predetermined pressure. Ru.
上記従動体3と所定間隔をおいて、上記回転軸1の長手
方向の移動を抑えるための保持部材7が回転軸1に固定
されている。この保持部材7に接触すると共に上記回転
軸lを保持し、かつ、これの回転を容易にするためのボ
ールベアリング8が配置されており、このボールベアリ
ング8はさらに保持板9によって保持されている。上記
回転軸1は、上記ボールベアリング8および保持板9た
保持されていると共和これらと対向し、かつ、所定間隔
をおいて配置されたベアリングおよび保持板(図示して
いない)によって上記保持体2の配置された回転軸1の
端部と反対側の端部が保持されている。A holding member 7 for suppressing longitudinal movement of the rotating shaft 1 is fixed to the rotating shaft 1 at a predetermined distance from the driven body 3. A ball bearing 8 is arranged to contact this holding member 7, hold the rotation axis l, and facilitate rotation thereof, and this ball bearing 8 is further held by a holding plate 9. . The rotating shaft 1 is supported by the ball bearing 8 and the holding plate 9, which are opposed to each other and are arranged at a predetermined distance from each other by a bearing and a holding plate (not shown). The end of the rotary shaft 1 opposite to the end of the rotary shaft 1 where the rotary shaft 2 is disposed is held.
上記各保持板9の間に位置する回転軸IKは、所定間隔
をおいて複数のり一う−10が固定して配置されており
、このローラーL−10に接触して従動ローラー11が
設けられている。この従動ローラー11は従動回転軸1
2に固定して配置されており、上記回転軸1の矢印C方
向の正回転に伴つてこれとの摩擦力によりこれと反対方
向に回転される。上記ローラー10と従動ローラー11
との間にシート13が挿入されると、ローラー゛10と
従動ローラー11により所定の方向に搬送される。On the rotating shaft IK located between each of the holding plates 9, a plurality of rollers L-10 are fixedly arranged at predetermined intervals, and a driven roller 11 is provided in contact with the roller L-10. ing. This driven roller 11 is a driven rotating shaft 1
2, and as the rotating shaft 1 rotates forward in the direction of arrow C, it is rotated in the opposite direction due to the frictional force therebetween. The above roller 10 and driven roller 11
When the sheet 13 is inserted between the rollers 10 and 11, the sheet 13 is conveyed in a predetermined direction by the roller 10 and the driven roller 11.
上記駆動体40回転力はこれの凹凸状の端間とこれに嵌
合している従動体3の端面との摩擦力により従動体3に
伝えられて、これと一体の回転軸1に伝えられて回転軸
1が回転される。この回転軸1の回転力忙抗する回転負
荷は、上記ローラー10と従動ローラー11との間に搬
入されたシート13のジャムなおによりて生じる。εの
回転負荷が回転軸IKかかると、それは、上記従動体3
を介して駆動体40向転に抗する力と゛して駆動体4に
伝達される。さらに、回転軸1が停止する―どの異常負
荷が発生すると、駆動体40回転に抗する力が、駆動体
4と従動体3との嵌合面和学じている摩擦力よりも大き
くなるため忙、駆動体4が従動体3の傾斜面に沿って摺
動しながら回転し、かつ、駆動体4と保持体2との間に
配置されたスプリング6の押圧力に抗して矢印d方向に
移動する。この駆動体4と所定の間隔をおいて矢印d方
向に、上記駆動体4の移動量を検出するマイクロスイッ
チなどの検出手段14が設けられており、上記駆動体4
が所定の位置に達すると、上記検出手段14は、駆動手
段へ電流を供給する電源回路にこれを開く信号を与えて
、駆動手段を停止させる。上記検出手段14が駆動手段
を停止させるための信号を出力する時期は、異常負荷が
かかってから駆動体4の傾斜面が従動体3の傾斜面に沿
って摺動しながら回転する駆動体4の回転角度が小さい
方が望ましい。したがって、駆動体4の従動体3と嵌合
する端面は、これ忙形成される凸W54aと凹$4bと
の高さの差が比較的小さく、かつ、これらの間に形成さ
れる傾斜面が、その正回転方向に対して凸1(S4aか
ら凹部4bに至る間に湿球される傾斜面4dの傾斜角0
2を大きなものとし、凹部4bから凸部4,1に至る間
に形成される傾斜面4Cの傾斜角θ1を上記傾斜角θ2
よりも小さなものとするのが好ましい。このよプに形成
された端面を有する駆動体4を用いると、駆動体4の回
転軸1の長手方向への移動量が回転軸10回転角に対し
て大きなものとなり、異常負荷が回転軸IKかかってか
らの駆動体4の移動が速いために異常負荷の検出が速い
という利点がある。また、駆動体4の凸部4mが従動体
3の凸部で停止するようにすると、回転軸1を逆回転し
てローツー10と従動ローラー11との間の異物もしく
はジャムしたシート13などを取り出すときに、微少な
回転力を与えるだけで、上記傾斜角θ2の傾斜面4dに
沿りて上記従動体3が摺動するから、スプリング6の押
圧力が大きい場合忙も比較的小さな力で回転軸1を所定
の角度だけ逆回転できるという利点がある。さらにまた
、回転軸10回転負荷の上限は、直接的には駆動体4と
従動体3との嵌合面との間に生じる摩擦力に岬しく、こ
の摩擦力を生じさせる圧力をこれらの嵌合間に与えるス
プリング6の引張力と上記嵌合面における摩擦係数との
積で与えられる丸めに、スプリング6が上記嵌合面に与
える圧力を変化させることによって、容易に回転負荷の
上限を設定することができる。The rotational force of the driving body 40 is transmitted to the driven body 3 by the frictional force between its uneven ends and the end face of the driven body 3 fitted thereto, and then to the rotating shaft 1 integrated therewith. The rotating shaft 1 is rotated. The rotational load caused by the rotational force of the rotating shaft 1 is caused by a jam of the sheet 13 carried between the roller 10 and the driven roller 11. When a rotational load of ε is applied to the rotating shaft IK, it is applied to the driven body 3
is transmitted to the driving body 4 as a force that resists the rotation of the driving body 40. Furthermore, the rotating shaft 1 stops - when any abnormal load occurs, the force resisting the rotation of the driving body 40 becomes greater than the frictional force calculated by the sum of the mating surfaces of the driving body 4 and the driven body 3. During the busy period, the driving body 4 rotates while sliding along the inclined surface of the driven body 3, and moves in the direction of arrow d against the pressing force of the spring 6 disposed between the driving body 4 and the holder 2. Move to. A detection means 14 such as a microswitch for detecting the amount of movement of the driver 4 is provided at a predetermined distance from the driver 4 in the direction of arrow d.
When the drive means reaches a predetermined position, the detection means 14 gives a signal to open the power supply circuit that supplies current to the drive means, thereby stopping the drive means. The timing at which the detection means 14 outputs a signal for stopping the driving means is when the driving body 4 rotates while the slope of the driving body 4 slides along the slope of the driven body 3 after an abnormal load is applied. It is desirable that the rotation angle is small. Therefore, the end face of the driving body 4 that fits into the driven body 3 has a relatively small difference in height between the convex W54a and the concave $4b, and the inclined surface formed between them is relatively small. , the angle of inclination of the inclined surface 4d which is wet-balled between the convex portion 1 (S4a and the concave portion 4b) is 0 with respect to the normal rotation direction.
2 is a large value, and the inclination angle θ1 of the inclined surface 4C formed between the concave portion 4b and the convex portions 4 and 1 is the inclination angle θ2.
It is preferable to make it smaller than . If the driver 4 having the end face formed in this manner is used, the amount of movement of the driver 4 in the longitudinal direction of the rotating shaft 1 will be large with respect to the rotation angle of the rotating shaft 10, and an abnormal load will be applied to the rotating shaft IK. Since the driving body 4 moves quickly after being applied, there is an advantage that abnormal load can be detected quickly. Furthermore, when the convex portion 4m of the driving body 4 is made to stop at the convex portion of the driven body 3, the rotating shaft 1 is rotated in the opposite direction to remove foreign objects or jammed sheets 13 between the low tool 10 and the driven roller 11. Sometimes, the driven body 3 slides along the inclined surface 4d of the inclination angle θ2 by applying only a slight rotational force, so if the pressing force of the spring 6 is large, the driven body 3 will rotate with a relatively small force. There is an advantage that the shaft 1 can be reversely rotated by a predetermined angle. Furthermore, the upper limit of the rotational load on the rotating shaft 10 is directly determined by the frictional force generated between the fitting surfaces of the driving body 4 and the driven body 3, and the pressure that causes this frictional force is applied to the fitting surfaces of the driving body 4 and the driven body 3. The upper limit of the rotational load can be easily set by changing the pressure that the spring 6 applies to the fitting surface to the roundness given by the product of the tensile force of the spring 6 applied during the interval and the friction coefficient on the fitting surface. be able to.
したがって、スプリング6を保持する保持体2の位置を
変化させるか、または、スプリング6の弾性係数の異な
るものを用いることによって上記回転負荷の上限を所定
の値に設定できる。Therefore, the upper limit of the rotational load can be set to a predetermined value by changing the position of the holder 2 that holds the spring 6 or by using a spring 6 with a different elastic modulus.
上記回転軸1は異物もしくはシート13のジャムなどに
よる異常負荷忙よって駆動手段が停止し、その回転を停
止した場合忙おいても、スプリング6の押圧力が比較的
小さなものであれば、手動もしくは他の手段によって容
易に正回転および逆回転を与えられるから、異常負荷の
除去が容易である。If the drive means stops due to an abnormal load caused by a foreign object or a jam in the sheet 13, and the rotation of the rotating shaft 1 is stopped, even if the rotating shaft 1 is busy, if the pressing force of the spring 6 is relatively small, manual or Since forward and reverse rotations can be easily applied by other means, abnormal loads can be easily removed.
本発明の異常負荷検出装置は、異常負荷の検出が速く、
かつ、確実であるから、その周辺の部品の破損や摩耗を
生じさせることがない。The abnormal load detection device of the present invention can detect abnormal loads quickly;
Moreover, since it is reliable, it does not cause damage or wear to surrounding parts.
第1図は本発明の異常負荷検出装置を示す一部切欠正面
図、第2図は本発明の異常負荷検出装置の要部の構成を
示す図、第3図は本発明の異常負荷検出装置の要部を分
解して示す斜面図、および、第4図は第3図に示した要
部の端面の傾斜角度な説明するための図である。FIG. 1 is a partially cutaway front view showing the abnormal load detection device of the present invention, FIG. 2 is a diagram showing the configuration of the main parts of the abnormal load detection device of the present invention, and FIG. 3 is the abnormal load detection device of the present invention. FIG. 4 is a diagram for explaining the inclination angle of the end face of the main part shown in FIG. 3. FIG.
Claims (2)
共にこれらの間に傾斜面または湾曲面を形成された駆動
体を回転軸に対して回転可能および長手方向へ摺動可能
に取り付け、この駆動体の端面と鉄台可能な端面な有す
る従動体を回転軸に固定し、駆動体を弾性体によりて従
動体に対してそれぞれの端面が嵌合するよ511CE接
させ、駆動手段により回転される駆動体の回転力を従動
体を介して回転軸に伝達し、回転軸に所定以上の回転負
荷がかかる場合に、駆動体が従動体の傾斜面または湾曲
面に沿りて摺動しながら回転して回転軸の長手方向く移
動し、かつ、この駆動体の移動量を検出する検出手段を
設けてなることを特徴とする異常負荷検出装置。(1) A driving body whose end face has one or more convex portions and concave portions and an inclined surface or curved surface formed therebetween is mounted so as to be rotatable and slidable in the longitudinal direction with respect to a rotating shaft; A driven body having an end face of the driving body and an end face that can be mounted on a steel base is fixed to a rotating shaft, and the driving body is brought into contact with the driven body by an elastic body so that each end face fits into the driven body, and the driven body is rotated by the driving means. The rotational force of the driving body is transmitted to the rotating shaft via the driven body, and when a rotational load exceeding a predetermined level is applied to the rotating shaft, the driving body slides along the inclined or curved surface of the driven body. An abnormal load detection device characterized by being provided with a detection means that rotates and moves in the longitudinal direction of a rotating shaft and detects the amount of movement of this drive body.
斜面または湾曲面が、凸部から凹部方向に形成され九傾
斜面ま九は湾曲面の回転軸の正回転方向に対する傾斜度
を、凹部から凸部方向に形成された傾斜面または湾曲面
の回転軸の正回転方向に対する傾斜度よりも大きくした
ことを特徴とする特許請求の範囲第1項記載の異常負荷
検出装置。(2) The inclined surface or curved surface formed between the convex part and the concave part of the end face of the driving body is formed in the direction from the convex part to the concave part, and the inclined surface is relative to the positive rotation direction of the rotation axis of the curved surface. The abnormal load detection device according to claim 1, wherein the degree of inclination is greater than the degree of inclination of the inclined surface or curved surface formed from the concave portion to the convex portion with respect to the forward rotation direction of the rotation axis. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13041381A JPS5834260A (en) | 1981-08-19 | 1981-08-19 | Abnormal-load detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13041381A JPS5834260A (en) | 1981-08-19 | 1981-08-19 | Abnormal-load detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5834260A true JPS5834260A (en) | 1983-02-28 |
Family
ID=15033662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13041381A Pending JPS5834260A (en) | 1981-08-19 | 1981-08-19 | Abnormal-load detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5834260A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61259131A (en) * | 1985-05-14 | 1986-11-17 | Sakai Seisakusho:Kk | Torque sensor |
EP1582770A3 (en) * | 2004-04-01 | 2009-12-16 | Honeywell Ag | Mechanical torque interruptor |
JP2011163834A (en) * | 2010-02-05 | 2011-08-25 | Anzen Motor Car Co Ltd | Thrust load detection type brake tester |
JP2013524129A (en) * | 2010-04-14 | 2013-06-17 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | Pulley damper |
CN109578550A (en) * | 2018-11-22 | 2019-04-05 | 深圳市优必选科技有限公司 | Gear assembly and steering engine |
-
1981
- 1981-08-19 JP JP13041381A patent/JPS5834260A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61259131A (en) * | 1985-05-14 | 1986-11-17 | Sakai Seisakusho:Kk | Torque sensor |
JPH054014B2 (en) * | 1985-05-14 | 1993-01-19 | Sakai Mfg | |
EP1582770A3 (en) * | 2004-04-01 | 2009-12-16 | Honeywell Ag | Mechanical torque interruptor |
JP2011163834A (en) * | 2010-02-05 | 2011-08-25 | Anzen Motor Car Co Ltd | Thrust load detection type brake tester |
JP2013524129A (en) * | 2010-04-14 | 2013-06-17 | シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト | Pulley damper |
CN109578550A (en) * | 2018-11-22 | 2019-04-05 | 深圳市优必选科技有限公司 | Gear assembly and steering engine |
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