Patent ID: 9700982
Date: 2017-07-11
CPC Classifications: B23Q,F16L

Claim:
1. A rotary joint support structure, comprising: a rotary joint which includes a rotating side member and a stationary side member which are provided with bores which communicate with each other, a housing which supports said stationary side member, a hollow shaft which is connected to said rotating side member, a hollow shaft surrounding part which surrounds said hollow shaft, a hollow rotary joint holding part which is formed inside said housing and surrounds contact parts between said rotating side member and stationary side member, at least one drain hole which extends from an outside of said housing to said rotary joint holding part, a first cleaning passage which is formed inside said housing and is in fluid communication with said rotary joint holding part, a hollow shaft holding part which is formed inside said housing and covers said hollow shaft and said hollow shaft surrounding part, a plurality of cutaway parts which are formed in a circumferential direction of the housing so as to communicate an outside of said housing with said hollow shaft holding part, and a plurality of second cleaning passages, each of which is in fluid communication with each of the cutaway parts inside said housing at positions corresponding to the plurality of cutaway parts.