Title:
DEVICE FOR RAISING AND DROPPING AGRICULTURAL WORKING MACHINE
Document Type and Number:
Japanese Patent JPH06292418
Kind Code:
A
Abstract:
PURPOSE: To make the range of deflection of a cylinder spring to elastically support a working machine body approximately constant.
CONSTITUTION: In a device for raising and dropping an agricultural working machine wherein a rise and fall cylinder 28 is elastically supported through a cylinder spring 46 on a traveling machine body and a working machine body is lifted and dropped by the rise and fall cylinder 28, the cylinder spring 46 having a spring constant to change nonlinearly according to increase in weight of the working machine body is installed.
Inventors:
NAKAO TOSHIO
Application Number:
JP10612993A
Publication Date:
October 21, 1994
Filing Date:
April 07, 1993
Export Citation:
Assignee:
YANMAR AGRICULT EQUIP
International Classes:
A01B63/10; A01C11/02; (IPC1-7): A01C11/02; A01B63/10; A01C11/02
Attorney, Agent or Firm:
Fujiwara Tadaharu