Patent ID: 8037768
Filing Date: 2011-10-18
Classification: F01D,F05D,G01H,G10K

Abstract:
1. A vibrometer mounting mechanism securing a measuring section of a vibrometer for measuring vibration of a shaft of a rotary machine to a casing of the rotary machine, the vibrometer mounting mechanism comprising: a case secured to the casing with securing means; an inner cylinder that accommodates the measuring section at one end, that is disposed inside the case, and that slides relative to the case; and an adjustment bolt disposed at one end of the case and capable of moving forward and backward with respect to the case and the inner cylinder, wherein the inner cylinder is made to move in a direction away from or toward the shaft by the adjustment bolt being inserted into the case and the inner cylinder, wherein the inner cylinder is made to move in a direction toward or away from the shaft by the adjustment bolt being retracted from the case and the inner cylinder; wherein a pyramid section that has a polygonal shape in front view and that is tapered toward the tip is formed at one end of the adjustment bolt, and wherein a bolt hole that receives the pyramid section in a freely rotatable manner and that has an inner circumferential surface is in contact with a side surface of the pyramid section at the other end of the inner cylinder.