US 5,516,176 A · Resilient supporting device for operator cabin

Abstract

A shock absorbing device provided with a damping plate damper having a viscosity damper includes: a case body comprising an upper flange, a body portion, and a lower flange; a collared resilient member provided with a body portion and a collar portion, an outer surface of the body portion and an undersurface of the collar portion being connected to the case body; a center shaft connected to the central portion of the collared resilient member; a damping plate fixed to the bottom end portion of the center shaft; and a damper case fixed to the bottom end of the case body and filled with a viscous substance. An operator cabin of a construction machine is resiliently supported to the vehicle body through the 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 resonance thereof with the gear engaging frequencies of a caterpillar track and a sprocket wheel is avoided, so that effective damping effects can be achieved against the number of excited 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.

Claims20

Dependent claims

A machine having a vehicle body, an operator cabin, and a resilient supporting device for resiliently supporting said operator cabin on said vehicle body, said resilient supporting device comprising a shock absorbing device having a damping plate damper, wherein said shock absorbing device having a damping plate damper comprises:

a case;
a center shaft positioned within said case and having a length within said case;
a resilient member positioned between and connected to said center shaft along substantially the length thereof within said case and to said case and defining with said case a chamber in a lower portion of said case, said chamber containing a viscous substance;
and
a damping plate fixed to a bottom end portion of said center shaft and positioned within said viscous substance;
said operator cabin being secured to an upper end portion of said center shaft.

3 more elements

a case body comprising an upper flange, a body part, and a lower flange;
said case body having a top end and a bottom end;
a collared resilient member having a body portion and a collar portion;
said collar portion of said collared resilient member having an upper surface and an undersurface;
said body portion of said collared resilient member having an inner surface and an outer surface;
said outer surface of the body portion of said collared resilient member and said undersurface of the collar portion of said collared resilient member being connected to said case body;
a center shaft having an upper end portion, a central portion, and a bottom end portion;
said central portion of said center shaft being connected to said inner surface of said body portion of said collared resilient member;
a damper case secured to said bottom end of said case body and containing a viscous substance;
and
a damping plate fixed to said bottom end portion of said center shaft and positioned within said viscous substance;
said operator cabin being secured to said upper end portion of said center shaft.

9 more elements

Dependencies are inferred from the claim text.

Resilient supporting device for operator cabin

Life of this patent

Resilient supporting device for operator cabin

Life of this patent

Abstract

Claims20