RESILIENT SUPPORTING DEVICE FOR OPERATOR CABIN.

摘要

A shock absorbing device provided with a damping plate damper comprises a viscosity damper including: a case body consisting of an upper flange, a body portion and a lower flange; a resilient member provided with a collar, an outer surface of a body portion thereof and the undersurface of a collar portion thereof being connected to the above-described case body; a center shaft connected to the central portion of the resilient member provided with the collar; a damping plate fixed to the bottom end portion of the center shaft; and a viscous substance filled up in a damper case fixed to the bottom end of the above-described case body. An operator cabin of a construction machine is resiliently supported on a machine body through this shock absorbing device. For this reason, the number of natural vibration of the operator cabin during high speed running of a hydraulic power shovel is increased, whereby resonnance thereof with the mesh-up frequencies by a caterpillar band and a sprocket wheel is avoided, so that effective damping effects can be achieved against the number of vibrations applied in wide ranges by the construction machines and the like, thus improving riding comfort for an operator and the mechanical strength of the operator cabin.