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Patent Searching and Data


Title:
CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2000142144
Kind Code:
A
Abstract:

To reduce the inertial rotation of a motor at running down a slope and enhance the durability by holding a two-speed running motor on the low- speed side for a fixed period of time after the vehicle body has started running.

Using a speed setting switch 23, the capacity of a running motor 14 is set to the high speed side or low speed side through a controller 24, speed selector valve 17, etc. A direction control valve 18 is changed over to be operated by an operating lever and an operating mechanism 20 through a pilot pipeline 19. Using a pressure sensor 26, the controller 24 senses a change in the pilot pressure as the start of vehicle running, and holds the capacity of the motor 14 to the low speed side until a fixed period of time has elapsed since the running started irrespective of the setting position of the switch 23.


Inventors:
TATEYAMA SUSUMU
Application Number:
JP1998000317474
Publication Date:
May 23, 2000
Filing Date:
November 09, 1998
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
E02F9/22; B60K17/10; (IPC1-7): B60K17/10; E02F9/22
Attorney, Agent or Firm:
広瀬 和彦