JPS6344573Y2 - - Google Patents

Info

Publication number
JPS6344573Y2
JPS6344573Y2 JP7586584U JP7586584U JPS6344573Y2 JP S6344573 Y2 JPS6344573 Y2 JP S6344573Y2 JP 7586584 U JP7586584 U JP 7586584U JP 7586584 U JP7586584 U JP 7586584U JP S6344573 Y2 JPS6344573 Y2 JP S6344573Y2
Authority
JP
Japan
Prior art keywords
bearing
fixed
pinion
housing
seal
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.)
Expired
Application number
JP7586584U
Other languages
Japanese (ja)
Other versions
JPS60188228U (en
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 filed Critical
Priority to JP7586584U priority Critical patent/JPS60188228U/en
Publication of JPS60188228U publication Critical patent/JPS60188228U/en
Application granted granted Critical
Publication of JPS6344573Y2 publication Critical patent/JPS6344573Y2/ja
Granted legal-status Critical Current

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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Description

【考案の詳細な説明】 （技術分野） 建設機械、舶用機械等に用いられ、特にコンパ
クト化が要求されるような旋回減速機の軸封装置
の改良に関する。[Detailed Description of the Invention] (Technical Field) The present invention relates to an improvement of a shaft sealing device for a swing reduction gear that is used in construction machinery, marine machinery, etc., and particularly requires compactness.

（従来技術） 従来のかかる旋回減速機の内部はオイルが満さ
れたオイルバスを形成し、出力軸を支持する軸受
の潤滑もこのオイルバスによつており、出力軸の
密封のため第３図に示すようにハウジング２５と
ピニオン軸２１との間にオイルシール２２がハウ
ジング２５に固定されて介されていた。かかる従
来のオイルバス式旋回減速機ではピニオン軸２１
と軸受２３の間にオイルシール２２を挿入する
為、ピニオン荷重位置Ｗからピニオン側軸受２３
までの寸法l1が長くなり、又この為軸受２３およ
び２４も大容量のものが必要であつた。(Prior art) The interior of such a conventional swing reducer forms an oil bath filled with oil, and the oil bath also lubricates the bearings that support the output shaft, as shown in Figure 3 to seal the output shaft. As shown in FIG. 2, an oil seal 22 was interposed between the housing 25 and the pinion shaft 21 and fixed to the housing 25. In such a conventional oil bath type swing reducer, the pinion shaft 21
In order to insert the oil seal 22 between the bearing 23 and the pinion side bearing 23 from the pinion load position W,
The dimension l 1 up to this point has become longer, and for this reason, the bearings 23 and 24 also need large capacity bearings.

（考案の目的） 本考案ではピニオン側軸受をグリス潤滑とし、
特殊軸封装置を使用することによりピニオン荷重
位置と軸受間の距離を最小とし軸受荷重を軽減す
ると共に、軸受を小容量化し前記寸法l1を少くし
装置全体のコンパクタ化を計ることを目的とす
る。(Purpose of the invention) In this invention, the pinion side bearing is lubricated with grease.
By using a special shaft sealing device, the distance between the pinion load position and the bearing is minimized to reduce the bearing load, and the purpose is to reduce the capacity of the bearing and reduce the above-mentioned dimension l1 , thereby making the entire device more compact. do.

（考案の開示） このため本考案は、ピニオン側軸受の内側にグ
リース溜りとそれをハウジング内のオイルバスと
区画するシールとを設け、かつ内方円形縁部をピ
ニオン軸段部と前記軸受内輪との間に固定され外
方縁部に前記軸受外輪またはハウジングを摺接す
るリツプ部を固着した皿状芯金を有することを特
徴とする旋回減速機軸封装置としたものである。
かかる構成によつて、第３図で示す寸法l1即ちピ
ニオン荷重位置Ｗとピニオン側軸受２３の寸法は
小さくなり、ピニオン側軸受を小さくでき、かつ
前記寸法l1を少くして装置全体をコンパクト化で
き、かつ前記シール、グリース溜り、および皿状
芯金によりピニオン軸はオイルバスに対し適正に
かつピニオン側軸受の潤滑を十分に保ちながら軸
封するものとなつた。(Disclosure of the invention) Therefore, the present invention provides a grease reservoir inside the pinion side bearing and a seal that separates it from the oil bath in the housing, and also connects the inner circular edge to the pinion shaft step and the bearing inner ring. The rotary reducer shaft sealing device is characterized in that it has a dish-shaped core metal fixed between the shaft and the outer edge thereof and having a lip portion fixed to the outer edge thereof for slidingly contacting the bearing outer ring or the housing.
With this configuration, the dimension l1 shown in FIG. 3, that is, the dimensions of the pinion load position W and the pinion side bearing 23, can be reduced, the pinion side bearing can be made smaller, and the dimension l1 can be reduced to make the entire device more compact. The pinion shaft can be properly sealed against the oil bath by the seal, the grease reservoir, and the disc-shaped core while maintaining sufficient lubrication of the pinion side bearing.

（実施例の説明） 本考案の実施例につき図面を参照して説明する
と、第１図は旋回減速機軸封装置の一例を示す。
旋回減速機油圧モータ又は電動機、遊星減速機、
ピニオンよりなり構造および作動を説明すると、
図示しない左端に配置される油圧モータ又は電動
機の回転はモータ軸１６を介して太陽歯車１５に
伝わり、太陽歯車１５、遊星歯車１４、内歯車１
０の間で単純遊星歯車１段減速を行い減速された
回転はキヤリア１３より２段減速部の太陽歯車１
２に伝わり遊星歯車１１内歯車１０間で２段減速
を行う、この減速された回転はキヤリア９を介し
てピニオン軸２が回転するようにされている。こ
のピニオン軸２はハウジング１に外輪３１を固定
された内輪２９をピニオン軸２に固定したころが
り軸受４及び５で回転可能に支持され、オイルバ
ス１７即ち減速機内潤滑油は軸受４及び５の間に
挿入されたオイルシール６によつて密封される。
一方オイルシール６と軸受４の間にはグリース溜
り５を設け軸受４を潤滑する。又グリース溜り５
のグリースの密封は軸受４とピニオン軸２間に挿
入された皿状芯金３によつて行なわれる。特殊軸
封装置を形成するこの皿状芯金３は、第２図に示
すように弾性を有する芯金部１９とゴムなどのシ
ール部１８により形成され、その内方円形縁部２
７はピニオン軸２段部２８と軸受４内輪２９との
間に固定され、外方縁部１８は、ハウジング１に
設けた摺動部２０に摺接しながら回転しグリース
を密封するシールリツプ部３０を固着する。この
外部回転部と内部固定部はゴムなどの弾性を利用
して固定部回転トルクを回転部回転トルクより大
きく取つているため固定部が回転することはな
い。実施例では皿状芯金３の外側全体にラバーを
被覆しているが、外方縁部１８のみにシールリツ
プ部３０が設けられてもよく、さらにシールリツ
プ部３０は軸受３の外輪３１側面と当接するよう
にしてもよい。(Description of Embodiments) An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an example of a shaft sealing device for a swing reduction gear.
Swing reducer hydraulic motor or electric motor, planetary reducer,
To explain the structure and operation of the pinion,
The rotation of the hydraulic motor or electric motor disposed at the left end (not shown) is transmitted to the sun gear 15 via the motor shaft 16.
0, the simple planetary gear is decelerated by one stage, and the decelerated rotation is transferred from the carrier 13 to the sun gear 1 of the two-stage reduction part.
This reduced rotation is transmitted to the pinion shaft 2 and is reduced in two steps between the planetary gear 11 and the internal gear 10, and the pinion shaft 2 is rotated via the carrier 9. This pinion shaft 2 is rotatably supported by rolling bearings 4 and 5, which have an inner ring 29 fixed to the housing 1 and an outer ring 31 fixed to the pinion shaft 2. It is sealed by an oil seal 6 inserted into.
On the other hand, a grease reservoir 5 is provided between the oil seal 6 and the bearing 4 to lubricate the bearing 4. Grease pool 5
Grease sealing is performed by a dish-shaped core metal 3 inserted between the bearing 4 and the pinion shaft 2. As shown in FIG. 2, this dish-shaped core metal 3 forming a special shaft sealing device is formed by an elastic core metal part 19 and a seal part 18 made of rubber or the like, and has an inner circular edge 2.
7 is fixed between the second stage portion 28 of the pinion shaft and the inner ring 29 of the bearing 4, and the outer edge 18 has a seal lip portion 30 that rotates while slidingly contacting the sliding portion 20 provided in the housing 1 to seal the grease. stick. The external rotating part and the internal fixing part utilize the elasticity of rubber or the like to make the rotating torque of the fixed part larger than that of the rotating part, so that the fixed part does not rotate. In the embodiment, the entire outside of the disk-shaped core metal 3 is coated with rubber, but the seal lip portion 30 may be provided only on the outer edge 18, and the seal lip portion 30 may be provided in contact with the side surface of the outer ring 31 of the bearing 3. It may be arranged so that they are in contact with each other.

第３図の上記l1に相当する寸法は小さくなり、
軸受３の容量を小さくでき、装置全体もコンパク
トにでき、しかもオイルバスは、シール、グリー
ス溜り、皿状芯金により完全に密封され、グリー
スも皿状芯金で密封され外部に漏れることはな
い。 The dimension corresponding to l 1 above in Figure 3 becomes smaller,
The capacity of the bearing 3 can be reduced, and the entire device can be made compact.Moreover, the oil bath is completely sealed with a seal, grease reservoir, and dish-shaped core metal, and grease is also sealed with the dish-shaped core metal, so it will not leak outside. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例の旋回減速機軸封装置
の断面図、第２図は第１図の要部拡大図、第３図
は従来の旋回減速機軸封装置の断面図を示す。 １…ハウジング、２…ピニオン軸、３…皿状芯
金、４…ころがり軸受、５…グリース溜り、６…
シール、１７…オイルバス、１８…外方縁部、２
７…内方円形縁部、２８…段部、２９…内輪、３
０…リツプ部、３１…外輪。 FIG. 1 is a sectional view of a shaft sealing device for a swing reduction gear according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a sectional view of a conventional shaft sealing device for a swing reduction gear. DESCRIPTION OF SYMBOLS 1...Housing, 2...Pinion shaft, 3...Dish-shaped core metal, 4...Rolling bearing, 5...Grease reservoir, 6...
Seal, 17...oil bath, 18...outer edge, 2
7...Inner circular edge, 28...Step, 29...Inner ring, 3
0...Rip portion, 31...Outer ring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 旋回減速機の出力側ピニオン軸にころがり軸受
の内輪を固定し、前記軸受の内側にグリース溜り
とさらにその内側にシールを前記軸受の外輪と固
定されたハウジング内に、前記グリース溜りを前
記ハウジング内のオイルバスと区画するように設
け、かつ内方円形縁部はピニオン軸段部と前記内
輪との間に固定され外方縁部は前記外輪またはハ
ウジングと摺接するリツプ部を固着した皿状芯金
を有することを特徴とする旋回減速機軸封装置。 An inner ring of a rolling bearing is fixed to the output side pinion shaft of the swing reducer, a grease reservoir is placed inside the bearing and a seal is placed inside the housing, which is fixed to the outer ring of the bearing, and the grease reservoir is placed inside the housing. A dish-shaped core is provided so as to be separated from the oil bath of the pinion, and the inner circular edge is fixed between the pinion shaft step and the inner ring, and the outer edge is fixed with a lip part that makes sliding contact with the outer ring or housing. A swing reducer shaft sealing device characterized by comprising gold.
JP7586584U 1984-05-25 1984-05-25 Swing reducer shaft sealing device Granted JPS60188228U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7586584U JPS60188228U (en) 1984-05-25 1984-05-25 Swing reducer shaft sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7586584U JPS60188228U (en) 1984-05-25 1984-05-25 Swing reducer shaft sealing device

Publications (2)

Publication Number Publication Date
JPS60188228U JPS60188228U (en) 1985-12-13
JPS6344573Y2 true JPS6344573Y2 (en) 1988-11-18

Family

ID=30617481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7586584U Granted JPS60188228U (en) 1984-05-25 1984-05-25 Swing reducer shaft sealing device

Country Status (1)

Country Link
JP (1) JPS60188228U (en)

Also Published As

Publication number Publication date
JPS60188228U (en) 1985-12-13

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