JPH04190863A - Bearing protecting device of centrifuge - Google Patents
Bearing protecting device of centrifugeInfo
- Publication number
- JPH04190863A JPH04190863A JP31947690A JP31947690A JPH04190863A JP H04190863 A JPH04190863 A JP H04190863A JP 31947690 A JP31947690 A JP 31947690A JP 31947690 A JP31947690 A JP 31947690A JP H04190863 A JPH04190863 A JP H04190863A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- spindle
- bearing
- flange
- 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
- Centrifugal Separators (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、質量のあるロータを鉛直のスピンドルと軸受
装置で支持して回転する遠心機の軸受保護装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a bearing protection device for a centrifuge in which a rotor with mass is supported by a vertical spindle and a bearing device and rotates.
従来、遠心機において、ロータを装置するスピンドル軸
は玉軸受のような軸受装置により支持し、高速回転を可
能としている。遠心機のロータは、サンプルを出し入れ
する度にスピンドル軸から外すため、″ロータを着脱す
ることが多い。遠心機の使用者は、ロータ取付時に、ロ
ータとスピンドルの嵌合が正規の位置まで入っているか
どうか確認する。確認の方法としてロータ取付状態から
ロータを少し持ち上げてからスピンドル軸に落下して突
き当て、当った時の音から、判断することがある。また
ロータ取付時に誤ってロータをスピンドル軸に強く突き
当てることがある。これらの時スピンドル軸に発生した
衝撃力は軸受装置に負荷される。そして衝撃力が強く軸
受装置が玉軸受の場合、球の圧痕として残り、圧痕が原
因となって軸受装置が予想以上の早期寿命となる。Conventionally, in a centrifuge, a spindle shaft that houses a rotor is supported by a bearing device such as a ball bearing to enable high-speed rotation. The rotor of a centrifuge is often removed from the spindle shaft each time a sample is loaded or unloaded, so the rotor is often attached and detached. Check to see if the rotor is in the correct position.To check, lift the rotor a little from the rotor installation state, drop it to the spindle shaft, and make a judgment based on the sound it makes when it hits the spindle.Also, if you accidentally hit the rotor when installing the rotor, It may hit the spindle shaft strongly.At these times, the impact force generated on the spindle shaft is applied to the bearing device.If the impact force is strong and the bearing device is a ball bearing, it will remain as an indentation on the ball, and the indentation will be the cause. As a result, the life of the bearing device ends earlier than expected.
ロータ回転中に軸受装置が破損すると、ロータの回転エ
ネルギーにより遠心機本体にも被害が及び、修理の費用
も高額となる。If the bearing device is damaged while the rotor is rotating, the rotational energy of the rotor will cause damage to the centrifuge itself, resulting in high repair costs.
本発明の目的は、ロータやサンプルの着脱時に発生する
衝撃力が、軸受装置に負荷されるのを防止し、軸受装置
の保護と長寿命化を行うことである。An object of the present invention is to prevent the bearing device from being loaded with impact force generated when a rotor or a sample is attached or detached, thereby protecting the bearing device and extending its life.
本発明は、ロータやサンプルの着脱がロータ停正時に行
なわれるので、ロータ装着時は高速回転する必要がない
点に着目し、ロータ装着時にはロータを支持するスピン
ドル軸の垂直方向の荷重を軸受保護装置で受け、ロータ
回転時には軸受保護装置を解除し、軸受装置でスピンド
ル軸を支持するようにしたものである。The present invention focuses on the fact that the rotor and sample are attached and detached when the rotor is stopped, so there is no need for high-speed rotation when the rotor is attached, and the bearing protects the vertical load of the spindle shaft that supports the rotor when the rotor is attached. When the rotor rotates, the bearing protection device is released and the spindle shaft is supported by the bearing device.
本発明の１実施例を第１図に基づいて説明する。図にお
いて１はロータ、２は遠心分離するサンプル、３はロー
タ装着部、４はロータ装着部３とスピンドル５を連結し
一体となって回転するシャフト、６と７はスピンドル５
とハウジング９およびプレート１０の間にスピンドルに
圧入して、スピンドル５を高速回転可能とする軸受装置
、８は軸受装置６を下方に押し付けているスプリング、
９はハウジング、１０はハウジングに固定したプレート
、１１はスピンドル５と固着したモータ回転子、１２は
ハウジング１０に装着したモータ回転子、１３は前記プ
レート１ｏと一体でスピンドル５と同心状のねじ部、１
４は前記ねじ１３と係合するねじ部を有し外周に歯車を
有するフランジ、１５は前記スピンドルと固着しオイル
２２を軸受装Ｍ６．７に供給するポンプ部、１５ａは前
′記ポンプ部１５の一部でスピンドル５の軸と直角の面
の軸突き当て部、１６はフランジ１４と一体で前記ポン
プ部の突き当て部１５ａと相対する面のフランジ突き当
て部、１７はモータ１８の回転軸に固定し、前記フラン
ジ１４の外周の歯車とかみあうよう配置された小歯車、
１９はスイッチセンサ２０ａ、２０ｂの作用によりフラ
ンジ１４の高さを検出する位置センサ、２１はロータを
設置するチャンバのドアである。次に動作を説明する。One embodiment of the present invention will be described based on FIG. In the figure, 1 is the rotor, 2 is the sample to be centrifuged, 3 is the rotor attachment part, 4 is the shaft that connects the rotor attachment part 3 and the spindle 5 and rotates as one, 6 and 7 are the spindles 5
a bearing device that is press-fitted into the spindle between the housing 9 and the plate 10 to enable the spindle 5 to rotate at high speed; 8 is a spring that presses the bearing device 6 downward;
9 is a housing, 10 is a plate fixed to the housing, 11 is a motor rotor fixed to the spindle 5, 12 is a motor rotor attached to the housing 10, and 13 is a threaded portion integral with the plate 1o and concentric with the spindle 5. ,1
4 is a flange having a threaded portion that engages with the screw 13 and has a gear on its outer periphery; 15 is a pump portion that is fixed to the spindle and supplies oil 22 to the bearing mounting M6.7; 15a is the pump portion 15; 16 is a flange abutting portion on a surface perpendicular to the axis of the spindle 5, and 16 is a flange abutting portion on a surface facing the abutting portion 15a of the pump section; 17 is a rotating shaft of the motor 18. a small gear fixed to the flange 14 and arranged to mesh with the gear on the outer periphery of the flange 14;
19 is a position sensor that detects the height of the flange 14 by the action of switch sensors 20a and 20b, and 21 is a door of a chamber in which the rotor is installed. Next, the operation will be explained.
初期のフランジ１４は下がっており、軸突き当て部１５
ａとフランジ突き当て部１６は離れている。遠心分離す
るサンプルを入れたロータを遠心機に装着するためにド
ア２１を開けると、ドアセンサ（図示なし）によりドア
が開かれたのを感知し、モータ１８を回転させると、フ
ランジ１４が回転し、ねじ部１３の作用によりフランジ
が上昇する。フランジが上昇し、軸突き当て部１５ａと
フランジ突き当て部１６が突き当たると、スピンドル５
と軸受装置６を介して、スプリング８を圧縮し、軸受装
置７も上昇するその後位置センサ１９とスイッチセンサ
２０ａがフランジを感知し、モータ１８の回転を停止す
る。The initial flange 14 is lowered, and the shaft abutting part 15
a and the flange abutting portion 16 are apart. When the door 21 is opened to attach the rotor containing the sample to be centrifuged to the centrifuge, a door sensor (not shown) detects that the door has been opened, and when the motor 18 is rotated, the flange 14 rotates. , the flange is raised by the action of the threaded portion 13. When the flange rises and the shaft abutting part 15a and the flange abutting part 16 abut, the spindle 5
Then, the spring 8 is compressed through the bearing device 6, and the bearing device 7 also rises.Then, the position sensor 19 and the switch sensor 20a detect the flange, and the rotation of the motor 18 is stopped.
この状態でロータを装着すると、ロータがロータ装着部
に衝突した時に発生する衝撃力は、シャフト４、スピン
ドル５、ポンプ部１５．および軸突き当て部１５ａを介
して、フランジ突き当て部１６に伝達し、軸受装置ｉ６
．７には、衝撃力は伝達しない。ロータ装着完了後ドア
２１を閉めるとドアセンサによりドアが閉じられたのを
感知し、モータ１８を逆転させ、フランジ１４を回転さ
せ、ねじ部１３の作用によりフランジが下降する。When the rotor is mounted in this state, the impact force generated when the rotor collides with the rotor mounting section is transmitted to the shaft 4, spindle 5, pump section 15. and the shaft abutting portion 15a to the flange abutting portion 16, and the bearing device i6
．． 7, no impact force is transmitted. When the door 21 is closed after the rotor installation is completed, the door sensor detects that the door is closed, the motor 18 is reversed, the flange 14 is rotated, and the flange is lowered by the action of the screw portion 13.
突き当て部１５ａとフランジ突き当て部１６が離れる。The abutting portion 15a and the flange abutting portion 16 are separated.
スピンドル５はスプリング８の圧縮カレこより下降し、
軸受装置７がプレート１０に突き当たり停止する。フラ
ンジはさらに下降し、スイッチセンサ２−Ｏｂと位置セ
ンサ１９がフランジを感知し、モータ１８の回転を停止
する。その後、ロータ１を回転しサンプルの遠心分離を
行う。The spindle 5 descends from the compression point of the spring 8,
The bearing device 7 hits the plate 10 and stops. The flange further descends, the switch sensor 2-Ob and the position sensor 19 sense the flange, and the rotation of the motor 18 is stopped. Thereafter, the rotor 1 is rotated to perform centrifugal separation of the sample.
本発明によれば、ロータ装着時の衝撃力を軸受装置に負
荷することをなくしたので、軸受寿命を長くすることが
できる。According to the present invention, since the impact force when the rotor is attached is not applied to the bearing device, the life of the bearing can be extended.
第１図は本発明になる遠心機の軸受保護装置の一実施例
を示す断面図である。図において、１はロータ、５はス
ピンドル、６と７は軸受装置、１８はモータ、１４はフ
ランジ、１９は位置センサである。
特許出願人の名称 日立工機株式会社FIG. 1 is a sectional view showing an embodiment of a bearing protection device for a centrifuge according to the present invention. In the figure, 1 is a rotor, 5 is a spindle, 6 and 7 are bearing devices, 18 is a motor, 14 is a flange, and 19 is a position sensor. Patent applicant name Hitachi Koki Co., Ltd.
Claims (1)
、スピンドル軸を回転可能とする軸受装置を有する遠心
機において、ロータ装着時にスピンドルの垂直方向の荷
重を軸受保護装置で受けることを特徴とした遠心機の軸
受保護装置。A centrifugal machine having a rotor, a spindle shaft on which the rotor is mounted and driven to rotate, and a bearing device that allows the spindle shaft to rotate, in which the load in the vertical direction of the spindle is received by a bearing protection device when the rotor is mounted. Machine bearing protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31947690A JPH04190863A (en) | 1990-11-22 | 1990-11-22 | Bearing protecting device of centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31947690A JPH04190863A (en) | 1990-11-22 | 1990-11-22 | Bearing protecting device of centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04190863A true JPH04190863A (en) | 1992-07-09 |
Family
ID=18110628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31947690A Pending JPH04190863A (en) | 1990-11-22 | 1990-11-22 | Bearing protecting device of centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04190863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001518834A (en) * | 1997-04-10 | 2001-10-16 | ソーヴァル・プロダクツ・エル・ピー | Method and apparatus for preventing normal forces during rotor failure |
| WO2006111548A1 (en) * | 2005-04-19 | 2006-10-26 | Hanning Elektro-Werke Gmbh & Co. Kg | Drive unit for a laboratory centrifuge |
| WO2007104684A1 (en) * | 2006-03-15 | 2007-09-20 | Gea Westfalia Separator Gmbh | Separator arrangement in sanitary design |
-
1990
- 1990-11-22 JP JP31947690A patent/JPH04190863A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001518834A (en) * | 1997-04-10 | 2001-10-16 | ソーヴァル・プロダクツ・エル・ピー | Method and apparatus for preventing normal forces during rotor failure |
| WO2006111548A1 (en) * | 2005-04-19 | 2006-10-26 | Hanning Elektro-Werke Gmbh & Co. Kg | Drive unit for a laboratory centrifuge |
| WO2007104684A1 (en) * | 2006-03-15 | 2007-09-20 | Gea Westfalia Separator Gmbh | Separator arrangement in sanitary design |
| US8092362B2 (en) | 2006-03-15 | 2012-01-10 | Westfalia Separator Ag | Separator arrangement in sanitary design |
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