Operator's seat supporting device for service vehicle

Abstract

An operator's seat ( 6 ) is mounted via a posture adjusting mechanism ( 40 ) on a supporting plate ( 3 ) supported by at least two damper cylinders ( 50, 30 ) at a place where an operator's seat is installed, and at least one of the damper cylinders ( 50, 30 ) is used as a damper cylinder ( 50 ) for reducing vibrations by making use of a magnetic rheological fluid.

1 . An operator's seat supporting device for a service vehicle, wherein at least biaxially supported by damper cylinders each are arranged along an axial line parallel to a vertical line passing through a shoulder of an operator sitting on a seat, and the operator's seat supporting device includes a posture adjusting mechanism provided by the sections supported by the damper cylinders and the seat.  
   
   
       2 . An operator's seat supporting device for a service vehicle, wherein an operator's seat is mounted via a posture adjusting mechanism on a supporting plate supported by at least two damper cylinders at a place where an operator's seat is installed, and at least one of the damper cylinders reduces vibrations by making use of a magnetic rheological fluid.  
   
   
       3 . The operator's seat supporting device for a service vehicle according to  claim 2 , wherein, in the damper cylinder for reducing vibrations by making use of the magnetic rheological fluid, a buffering cylinder and a control cylinder for controlling vibrations with the magnetic rheological fluid are monolithically formed.  
   
   
       4 . The operator's seat supporting device for a service vehicle according to  claim 2 , wherein the damper cylinder has a biaxial slide supporting structure, and a coil spring is provided in the inner side or in the outer side from a shaft body having dual-shafts.  
   
   
       5 . The operator's seat supporting device for a service vehicle according to  claim 3 , wherein the damper cylinder has a biaxial slide supporting structure, and a coil spring is provided in the inner side or in the outer side from a shaft body having dual-shafts.  
   
   
       6 . The operator's seat supporting device for a service vehicle according to  claim 2 , wherein an operator's seat rotating mechanism is provided on the supporting plate supported by the damper cylinders.