Title:
DAMPER DEVICE OF ASPHALT FINISHER
Document Type and Number:
Japanese Patent JP3681686
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent breakage of a damper motor even in the case where overload is applied to a damper device.
SOLUTION: The damper motor 16 of the damper device 15 is rotated by pressure oil supplied from an oil pressure source 17, and the rotating direction and rotating speed thereof are controlled by a solenoid control valve 18 for driving the motor. A pressure switch 19 and a flow control valve 20 are interposed between the damper motor 16 and the solenoid control valve 18. When the damper driving switch 23 is turned on, the solenoid 21 is excited so that the position of a spool is switched to the upper position to supply pressure oil to the damper motor 16 to be rotated. When overload is applied to the damper device 15, the pressure switch 19 is operated to open a contact, so that the solenoid 19 is turned off so that the spool of the solenoid control valve 18 is switched to the lower position to stop the supply of pressure oil to the damper motor 16.
Inventors:
Nobuyuki Ishii
Application Number:
JP2002010609A
Publication Date:
August 10, 2005
Filing Date:
January 18, 2002
Export Citation:
Assignee:
Sumitomo Construction Machinery Manufacturing Co., Ltd.
International Classes:
E01C19/48; (IPC1-7): E01C19/48
Domestic Patent References:
| JP4272304A | ||||
| JP7197416A | ||||
| JP7116541A |
Attorney, Agent or Firm:
Takakichi Hayashi
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