Title:
DRIVE DEVICE OF HYDRAULIC BUCKET
Document Type and Number:
Japanese Patent JP2858296
Kind Code:
B2
Abstract:
PURPOSE: To facilitate a hydraulic control, by providing a magnet type changeover valve to be switched over by an electrical switch on the way of a hydraulic oil path for the changeover valve and operating the electric switch.
CONSTITUTION: When a switch 36 attached to the operating lever on the main body is pushed, a magnet 29 is actuated to transfer a spool 20 to the left side and the hydraulic oil is conducted from the oil opening 22 to another one 23 and a hydraulic motor interposed in the hydraulic oil path therebetween is actuated. A switch 38 is pushed, a magnet 30 is actuated to transfer the spool 20 to the right side and the hydraulic oil is conducted from the oil opening 23 to 22 and the hydraulic motor interposed therebetween is actuated to the opposite direction to the case of the switch 36 pushed in. When a switch 40 is pushed, a magnet 31' is actuated to transfer a spool 14 to the right side and block the oil opening 12', 13'. A device provided with the first changeover valve and the second changeover valve are connected at the delivery side of the changeover valve for the control of the main body, to the bucket at the front end of a boom through pipes. Hence, the fitting work to an existing device is facilitated.
Inventors:
TANADA KATSUNORI
Application Number:
JP31257594A
Publication Date:
February 17, 1999
Filing Date:
November 21, 1994
Export Citation:
Assignee:
TANADA KATSUNORI
International Classes:
E02F9/20; B66C3/16; B66C13/56; E02F9/22; F15B11/16; F16K31/06; (IPC1-7): E02F9/20; E02F9/22; F15B11/16; F16K31/06
Domestic Patent References:
| JP53105403U |
Attorney, Agent or Firm:
Hisayuki Tarumoto
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