| 摘要 |
PURPOSE: Structure for mounting an insulator for a roll mount is provided to easily and accurately perform a tuning test and to reduce the cost for installing and maintaining facilities by excluding a separate interference-fit facility for interferingly fitting an insulator. CONSTITUTION: Many inner teeth(23) are formed on the inner circumference of a ring(22) of a support(21). Many outer teeth(32) engaging with the inner teeth are formed on the outer circumference of a case(31) covering an insulator(30). The insulator is gear-engaged with the ring of the support. Keys(25) are formed at both sides of the support. The keys are for preventing the insulator from departing. Stoppers(26) for controlling the rotation of the keys are included. The insulator is installed and removed easily by using the keys.
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