JPH08308168A - Motor-driven cylinder device - Google Patents

Motor-driven cylinder device

Info

Publication number
JPH08308168A
JPH08308168A JP7129490A JP12949095A JPH08308168A JP H08308168 A JPH08308168 A JP H08308168A JP 7129490 A JP7129490 A JP 7129490A JP 12949095 A JP12949095 A JP 12949095A JP H08308168 A JPH08308168 A JP H08308168A
Authority
JP
Japan
Prior art keywords
brake
input terminal
motor
power supply
electrically connected
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
Application number
JP7129490A
Other languages
Japanese (ja)
Inventor
Kunimasa Kimura
邦昌 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP7129490A priority Critical patent/JPH08308168A/en
Publication of JPH08308168A publication Critical patent/JPH08308168A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H25/00Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20Screw mechanisms

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

PURPOSE: To omit at least the wiring related to a holding brake from the conventional wiring by electrically connecting variable-voltage variable-frequency power supply to the input terminal of the motor and, at the same time, to the brake by branching the power supply at the input terminal. CONSTITUTION: Variable-voltage variable-frequency power supply is electrically connected to the input terminal of an induction motor 14 and a holding brake 2 is attached to the motor 14 by attaching its fixed section to a cover 13 and rotating section to the threaded shaft 7 of a ball screw mechanism 6. In addition, a brake coil is electrically connected to a brake power source 17. The power source 17 causes a nearly constant DC current to flow to the brake coil by forming an electric circuit of an inductance and a rectifying element. Moreover, the input terminal of the power source 17 is electrically connected to the power supply branched at the input terminal of the motor 14.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、回転運動を直線運動に
変換して伸縮ロッドを伸縮させる電動シリンダ装置の改
良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an electric cylinder device for converting a rotary motion into a linear motion to expand and contract a telescopic rod.

【0002】[0002]

【従来技術と課題】従来、いわゆる電動シリンダ装置に
おいては、その誘導モータの出力軸に保持ブレーキが連
結されたり、各種の制御機器が装着されているが、誘導
モータ、保持ブレーキ、各種の制御機器等は、一般に別
途設けた制御盤にそれぞれ設けられた電源に、多数本の
電線によってそれぞれ電気的に接続されている。しか
も、電圧降下を考慮して、特に誘導モータや保持ブレー
キの結線に使用される電線は、太いものにしなければな
らず、その結果、そのための配線工事は、非常に手間隙
のかかる厄介なものになるなどの問題があった。本発明
は上記の事情に鑑みて為されたもので、電気配線の工事
を容易に行い得るようにした電動シリンダ装置を提供す
ることを目的とする。
2. Description of the Related Art Conventionally, in a so-called electric cylinder device, a holding brake is connected to the output shaft of the induction motor and various control devices are mounted, but the induction motor, the holding brake, and various control devices are mounted. Etc. are generally electrically connected by a large number of electric wires to power sources respectively provided in separately provided control panels. Moreover, in consideration of the voltage drop, the wires used especially for connecting the induction motor and the holding brake must be thick, and as a result, the wiring work for that purpose is very troublesome and troublesome. There was a problem such as becoming. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric cylinder device in which the work of electric wiring can be easily performed.

【0003】[0003]

【課題を解決するための手段】上記の目的を達成するた
めに本発明における電動シリンダ装置は、回転運動を直
線運動に変換して伸縮ロッドを伸縮させる電動シリンダ
装置において、電動シリンダ本体に保持ブレーキを装着
するとともに前記電動シリンダ本体の誘導モータの出力
軸には前記保持ブレーキの回転部を連結し、さらに前記
電動シリンダ本体には、ほぼ一定の直流電流が得られる
回路を有するブレーキ電源を装着し、このブレーキ電源
には前記保持ブレーキのブレーキコイルを電気的に接続
し、可変電圧可変周波数式のモータ電源を、前記誘導モ
ータの入力端子に電気的に接続するとともにこの入力端
子において分岐して前記ブレーキ電源に電気的に接続し
たことを特徴とする。
In order to achieve the above object, an electric cylinder device according to the present invention is an electric cylinder device for converting a rotary motion into a linear motion to expand and contract a telescopic rod. The rotating portion of the holding brake is connected to the output shaft of the induction motor of the electric cylinder body, and a brake power supply having a circuit capable of obtaining a substantially constant DC current is attached to the electric cylinder body. , A brake coil of the holding brake is electrically connected to the brake power source, and a variable voltage variable frequency type motor power source is electrically connected to an input terminal of the induction motor and is branched at the input terminal. It is characterized by being electrically connected to the brake power supply.

【0004】[0004]

【作用】このように構成されたものは、まず、モータ電
源から周波数0、すなわち直流電圧を前記誘導モータに
印加すると、誘導モータのモータ巻線に直流電流が流
れ、誘導モータは直流制動の状態になる。また、前記保
持ブレーキの入力端子がブレーキ電源を介して前記誘導
モータの入力端子に接続してあるため、保持ブレーキに
直流電流が流れて保持ブレーキは解放状態にされる。こ
の状態のもとに誘導モータへの印加電圧および周波数を
上げていくと、誘導モータは加速して回転が速くなり、
伸縮ロッドの速度が速くなる。
With the above-described structure, when a frequency 0, that is, a DC voltage is applied to the induction motor from the motor power source, a DC current flows through the motor winding of the induction motor, and the induction motor is in the DC braking state. become. Further, since the input terminal of the holding brake is connected to the input terminal of the induction motor via the brake power source, a direct current flows through the holding brake and the holding brake is released. If the applied voltage and frequency to the induction motor are increased under this condition, the induction motor will accelerate and rotate faster,
The speed of the telescopic rod increases.

【0005】[0005]

【実施例】本発明の実施例について図1および図2に基
づき詳細に説明する。正面図である図1に示すように、
本電動シリンダ装置は、電動シリンダ本体1と、保持ブ
レーキ2と、ブレーキ電源17とで構成してある。そし
て、電動シリンダ本体1においては、シリンダ3内にピ
ストン4が摺動自在に内装してあり、シリンダ3の左端
には筒体5が固着してあり、筒体5と前記ピストン4と
の間には、ボールねじ機構6が、ねじ軸7の左部を軸受
8を介して前記筒体5に支持させかつナット9を前記ピ
ストン4の左面に固着させて装着してあり、ピストン4
の右面には、シリンダ3の右端に固着した蓋10を摺動
自在に貫通する中空状の伸縮ロッド11の左端が固着し
てあり、伸縮ロッド11内には摺動部材12が摺動自在
に内装してあり、摺動部材12には前記ピストン4を貫
通するねじ軸7の右端が固着してあり、筒体5の左端に
は、カバー13を介して誘導モータ14が装着してあ
り、さらに、ねじ軸7の左端は、ベルト15およびベル
トプーリー16を介して前記誘導モータ14の出力軸に
連結してあって、誘導モータ14の正逆駆動により、伸
縮ロッド11はシリンダ3に対して伸縮作動するように
なっている。
Embodiments of the present invention will be described in detail with reference to FIGS. As shown in FIG. 1, which is a front view,
The electric cylinder device is composed of an electric cylinder body 1, a holding brake 2, and a brake power supply 17. In the electric cylinder body 1, a piston 4 is slidably mounted inside the cylinder 3, and a cylinder 5 is fixed to the left end of the cylinder 3, and a cylinder 5 is fixed between the cylinder 5 and the piston 4. A ball screw mechanism 6 is mounted by fixing the left portion of the screw shaft 7 to the cylindrical body 5 via a bearing 8 and fixing a nut 9 to the left surface of the piston 4.
A right end of a hollow telescopic rod 11 slidably penetrating the lid 10 fixed to the right end of the cylinder 3 is fixed to the right side of the cylinder 3, and a sliding member 12 is slidable inside the telescopic rod 11. The right end of the screw shaft 7 penetrating the piston 4 is fixed to the sliding member 12, and the induction motor 14 is attached to the left end of the tubular body 5 via the cover 13. Further, the left end of the screw shaft 7 is connected to the output shaft of the induction motor 14 via a belt 15 and a belt pulley 16, and the forward / reverse drive of the induction motor 14 causes the telescopic rod 11 to move relative to the cylinder 3. It is designed to expand and contract.

【0006】そして、前記誘導モータ14の入力端子に
は可変電圧可変周波数式のモータ電源(図示せず)が電
気的に接続してある。また、前記保持ブレーキ2は、固
定部が前記カバー13に装着してありかつ回転部が前記
ボールねじ機構6のねじ軸7に連結してあり、さらにブ
レーキコイル18を有しており、ブレーキコイル18は
前記ブレーキ電源17に電気的に接続してある。また、
ブレーキ電源17は、図2に示すように、インダクタン
ス17aと整流素子17bとを有する電気回路を成して
いて、前記ブレーキコイル18にほぼ一定の直流電流を
流すことができるようになっている。また、前記ブレー
キ電源17の入力端子は、前記誘導モータ14の入力端
子において分岐された前記モータ電源に電気的に接続し
てある。さらに、前記保持ブレーキ2のカバーにはロー
タリーエンコーダ19が装着してあり、ロータリーエン
コーダ19の回転部は前記ねじ軸7に連結してある。
A variable voltage variable frequency motor power source (not shown) is electrically connected to the input terminal of the induction motor 14. The holding brake 2 has a fixed portion mounted on the cover 13, a rotating portion connected to the screw shaft 7 of the ball screw mechanism 6, and further includes a brake coil 18. Reference numeral 18 is electrically connected to the brake power source 17. Also,
As shown in FIG. 2, the brake power source 17 forms an electric circuit having an inductance 17a and a rectifying element 17b, and is capable of supplying a substantially constant direct current to the brake coil 18. Further, the input terminal of the brake power supply 17 is electrically connected to the motor power supply branched at the input terminal of the induction motor 14. Further, a rotary encoder 19 is mounted on the cover of the holding brake 2, and the rotating portion of the rotary encoder 19 is connected to the screw shaft 7.

【0007】このように構成したものは、まず、モータ
電源から周波数0、すなわち直流電圧を前記誘導モータ
14に印加する。すると、誘導モータ14のモータ巻線
には直流電流が流れ直流制動の状態になる。さらに、前
記保持ブレーキ2の入力端子が前記ブレーキ電源17お
よび前記誘導モータ14の入力端子を介して前記モータ
電源に接続してあるため、保持ブレーキ2のブレーキコ
イル18に直流電流が流れて保持ブレーキ2は解放状態
にされる。この際、前述のとおり誘導モータ14は直流
制動状態なので、外力により伸縮ロッド11が伸縮され
ることはない。
In the thus constructed device, first, a frequency 0, that is, a DC voltage is applied to the induction motor 14 from the motor power source. Then, a direct current flows through the motor winding of the induction motor 14, and a direct current braking state is established. Further, since the input terminal of the holding brake 2 is connected to the motor power supply via the brake power supply 17 and the input terminal of the induction motor 14, a direct current flows through the brake coil 18 of the holding brake 2 to hold the holding brake. 2 is released. At this time, since the induction motor 14 is in the DC braking state as described above, the expandable rod 11 is not expanded or contracted by the external force.

【0008】次に、この状態のもとに誘導モータ14へ
の印加電圧および周波数を上げていくと、誘導モータ1
4は回転を始めととともに加速して回転が速くなり、伸
縮ロッド11の速度が速くなる。この際、ブレーキ電源
17のインダクタンス17aにおける電圧降下は、周波
数に比例するので、整流素子17bに加わる電圧はほぼ
一定となり、従って、ブレーキコイル18に加わる直流
電圧は、ほぼ一定となる。
Next, when the applied voltage and frequency to the induction motor 14 are increased under this condition, the induction motor 1
4 starts to rotate and accelerates to rotate faster, and the speed of the telescopic rod 11 increases. At this time, since the voltage drop in the inductance 17a of the brake power supply 17 is proportional to the frequency, the voltage applied to the rectifying element 17b is substantially constant, and therefore the DC voltage applied to the brake coil 18 is substantially constant.

【0009】[0009]

【効果】以上の説明から明らかなように本発明は、電動
シリンダ本体に保持ブレーキを装着するとともに前記電
動シリンダ本体の誘導モータの出力軸には前記保持ブレ
ーキの回転部を連結し、さらに前記電動シリンダ本体に
は、ほぼ一定の直流電流が得られる回路を有するブレー
キ電源を装着し、このブレーキ電源には前記保持ブレー
キのブレーキコイルを電気的に接続し、可変電圧可変周
波数式のモータ電源を、前記誘導モータの入力端子に電
気的に接続するとともにこの入力端子において分岐して
前記ブレーキ電源に電気的に接続したから、従来の配線
に比較して少なくとも保持ブレーキに係る配線を省略す
ることができるため、電気配線の工事を容易に行うこと
ができるなどの優れた効果を奏する。
As is apparent from the above description, according to the present invention, the holding brake is mounted on the electric cylinder body, and the rotating portion of the holding brake is connected to the output shaft of the induction motor of the electric cylinder body. The cylinder main body is equipped with a brake power supply having a circuit capable of obtaining a substantially constant direct current, and the brake coil of the holding brake is electrically connected to the brake power supply, and a variable voltage variable frequency type motor power supply is provided. Since it is electrically connected to the input terminal of the induction motor and branched at this input terminal and electrically connected to the brake power source, at least the wiring relating to the holding brake can be omitted as compared with the conventional wiring. Therefore, there is an excellent effect that the construction of the electric wiring can be easily performed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す一部切欠き断面正面図
である。
FIG. 1 is a partially cutaway sectional front view showing an embodiment of the present invention.

【図2】本発明に用いたブレーキ電源の配線図である。FIG. 2 is a wiring diagram of a brake power source used in the present invention.

【符号の説明】[Explanation of symbols]

2 保持ブレーキ 14 誘導モータ 17 ブレーキ電源 18 ブレーキコイル 2 Holding brake 14 Induction motor 17 Brake power supply 18 Brake coil

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 回転運動を直線運動に変換して伸縮ロッ
ドを伸縮させる電動シリンダ装置において、電動シリン
ダ本体1に保持ブレーキ2を装着するとともに前記電動
シリンダ本体1の誘導モータ14の出力軸には前記保持
ブレーキ2の回転部を連結し、さらに前記電動シリンダ
本体1には、ほぼ一定の直流電流が得られる回路を有す
るブレーキ電源17を装着し、このブレーキ電源17に
は前記保持ブレーキ2のブレーキコイル18を電気的に
接続し、可変電圧可変周波数式のモータ電源を、前記誘
導モータ14の入力端子に電気的に接続するとともにこ
の入力端子において分岐して前記ブレーキ電源17に電
気的に接続したことを特徴とする電動シリンダ装置。
1. An electric cylinder device for converting a rotary motion into a linear motion to expand and contract a telescopic rod, wherein a holding brake 2 is mounted on an electric cylinder body 1, and an output shaft of an induction motor 14 of the electric cylinder body 1 is mounted on the output shaft. The rotating portion of the holding brake 2 is connected, and further, the electric cylinder body 1 is equipped with a brake power supply 17 having a circuit capable of obtaining a substantially constant direct current. The brake power supply 17 has a brake of the holding brake 2. The coil 18 is electrically connected, and the variable-voltage variable-frequency motor power source is electrically connected to the input terminal of the induction motor 14 and branched at this input terminal to be electrically connected to the brake power source 17. An electric cylinder device characterized in that
JP7129490A 1995-04-28 1995-04-28 Motor-driven cylinder device Pending JPH08308168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7129490A JPH08308168A (en) 1995-04-28 1995-04-28 Motor-driven cylinder device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7129490A JPH08308168A (en) 1995-04-28 1995-04-28 Motor-driven cylinder device

Publications (1)

Publication Number Publication Date
JPH08308168A true JPH08308168A (en) 1996-11-22

Family

ID=15010775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7129490A Pending JPH08308168A (en) 1995-04-28 1995-04-28 Motor-driven cylinder device

Country Status (1)

Country Link
JP (1) JPH08308168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023009225A1 (en) * 2021-07-28 2023-02-02 Columbus Mckinnon Corporation Linear actuator with an integrated variable frequency drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023009225A1 (en) * 2021-07-28 2023-02-02 Columbus Mckinnon Corporation Linear actuator with an integrated variable frequency drive

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