Title:
HYDRAULIC DRIVER FOR SELF-TRAVELLING TYPE CRUSHER
Document Type and Number:
Japanese Patent JP3657765
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic driver for a self-travelling type crusher in which energy saving can be attained multi a simple structure and at a low cost.
SOLUTION: This hydraulic driver has a first hydraulic pump 20 and second hydraulic pump 21 of variable volume type driven by an engine 19, six hydraulic motors 23, 24, 25, 25, 28L 28R each to which pressure oil discharged from the first and second hydraulic pumps 20, 21 is fed, four control valves 29, 30, 31, 32 for controlling the directions and the flow rates of the pressure oil fed to the hydraulic motors 23-28, right/left travelling operating lever devices 33, 34 for performing switching operation between right/left travelling control valves 30, 31 by using pilot pressure, and regulators 35, 36 to which control pressure based on the pilot pressure is led to regulate the discharge flow rates of the first and second hydraulic pumps 20, 21.
Inventors:
Masamichi Tanaka
Hirose Kiyonobu
Endo Ichio
Hirose Kiyonobu
Endo Ichio
Application Number:
JP3113998A
Publication Date:
June 08, 2005
Filing Date:
February 13, 1998
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
B02C21/02; B02C23/00; (IPC1-7): B02C21/02
Domestic Patent References:
| JP73726U | ||||
| JP681641U | ||||
| JP8246181A | ||||
| JP3130859U |
Attorney, Agent or Firm:
Kasuga Toshiaki