JPH0187996U - - Google Patents

Description

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

第１図は本考案の一実施例を示す側断面図、第
２図は第１図の−矢視図、第３図は本考案の
バツクアツプリングの溝の変形例を示す要部拡大
図、第４図は二重反転軸を備えた推進軸系を示す
側断面図、第５図は従来例を示す要部拡大側断面
図である。 １は二重反転軸、２は外軸、３は内軸、１１は
遊星歯車機構、２７はシールケーシング、２８は
クランプリング、２９はシールライナ、３２は溝
、３３はシールリング、３４はバツクアツプリン
グ、３８は噴射管、ｒ，Ｔは潤滑油を示す。 Fig. 1 is a side sectional view showing one embodiment of the present invention, Fig. 2 is a view taken in the direction of - arrow in Fig. 1, and Fig. 3 is an enlarged view of essential parts showing a modification of the groove of the back-up spring of the present invention. , FIG. 4 is a side sectional view showing a propulsion shaft system equipped with a counter-rotating shaft, and FIG. 5 is an enlarged side sectional view of main parts showing a conventional example. 1 is a counter-rotating shaft, 2 is an outer shaft, 3 is an inner shaft, 11 is a planetary gear mechanism, 27 is a seal casing, 28 is a clamp ring, 29 is a seal liner, 32 is a groove, 33 is a seal ring, 34 is a back 38 is an injection pipe, and r and T are lubricating oil.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 反転歯車を介して内軸と外軸とを互に反転駆動
させるようにした二重反転軸において、内軸に外
軸端より更に延出するシールライナを嵌装固着し
、外軸端面にリング状のシールケーシングを同心
に設け、該シールケーシングにシールリングを、
該シールリングが前記シールライナ外周面に当接
するよう取付けると共に、該シールリング大気側
背面を支えるバツクアツプリングを、該バツクア
ツプリング内周面と前記シールライナ外周面とが
所要間隙を開けて配されるように取付け、該バツ
クアツプリング内周面に溝を設け、前記バツクア
ツプリングとシールライナとの間隙に潤滑油を吹
き付ける噴射手段を設けたことを特徴とする二重
反転軸シール装置。 In a counter-rotating shaft in which the inner shaft and the outer shaft are driven in reverse rotation with each other via a reversing gear, a seal liner that extends further from the outer shaft end is fitted and fixed to the inner shaft, and a ring is attached to the outer shaft end surface. A shaped seal casing is provided concentrically, and a seal ring is attached to the seal casing.
The seal ring is mounted so as to be in contact with the outer circumferential surface of the seal liner, and a back-up ring that supports the back surface of the seal ring on the atmosphere side is arranged with a required gap between the inner circumferential surface of the back-up spring and the outer circumferential surface of the seal liner. 1. A contra-rotating shaft seal device, characterized in that the back-up spring is mounted so as to be mounted, a groove is provided on the inner circumferential surface of the back-up spring, and an injection means is provided for spraying lubricating oil into the gap between the back-up spring and the seal liner.