Title:
WORK VEHICLE
Document Type and Number:
Japanese Patent JP2020157905
Kind Code:
A
Abstract:
To provide a work vehicle that is able to suitably reduce vibration transmitted to a cabin in various situations.SOLUTION: A tractor comprises a traveling machine body, front and rear wheels, a cabin 20, and a rear vibration-proof structure 40. The front and rear wheels cause the traveling machine body to travel. A driver seat is disposed in the cabin 20. The rear vibration-proof structure 40 is disposed between the traveling machine body and the cabin 20 and supports the cabin 20 so as to be proof against vibration. The rear vibration-proof structure 40 comprises a first vibration-proof rubber 44, a second vibration-proof rubber 55, and a load adjustment mechanism 60. The first vibration-proof rubbers 44 are mounted in a pair on the left and right sides of a rear portion of the cabin 20, and are constant in its support length, i.e., its vertical length, in the initial state. The second vibration-proof rubbers 55 are mounted in a pair on the left and right sides of the rear portion of the cabin 20. Based on one of vehicle speed and acceleration, the load adjustment mechanism 60 applies vertical load to the second vibration-proof rubbers 55, thereby changing the support length of the second vibration-proof rubbers 55.SELECTED DRAWING: Figure 3
Inventors:
OCHI TOMOFUMI
HIRANO KENJI
HIRANO KENJI
Application Number:
JP2019058790A
Publication Date:
October 01, 2020
Filing Date:
March 26, 2019
Export Citation:
Assignee:
YANMAR POWER TECHNOLOGY CO LTD
International Classes:
B62D24/02; F16F1/36; F16F3/087; F16F15/02; F16F15/08
Domestic Patent References:
| JPS5621975A | 1981-02-28 | |||
| JPS60168674U | 1985-11-08 |
Attorney, Agent or Firm:
Naomi Katsura River