Title:
ROAD GATE SYSTEM
Document Type and Number:
Japanese Patent JP2020029719
Kind Code:
A
Abstract:
To provide a road gate system which can position a gate at an arbitrary position without installing a sensor such as a limit switch or a proximity switch that directly detects the gate.SOLUTION: A road gate system which rotates a winding drum 14 by the drive of an electric motor 16, and lifts and lowers a gate body 3 suspended by cables 9, 10 by means of the winding and unwinding of the cables 9, 10 by the rotation of the winding drum 14 so as to position the gate body 3 at a desired height, the system comprising a setting section 25 for setting the height of the gate body 3, a potentiometer 22 for detecting the height of the gate body 3, and a motor control section 28 for outputting a drive signal to the electric motor 16 so that the set value of the setting section 25 and the detection value of the potentiometer 22 match each other.SELECTED DRAWING: Figure 3
More Like This:
| JP2002363929 | MONITOR STAND |
| JP2000352020 | CROSSING GATE |
Inventors:
OGURO KATSUNORI
Application Number:
JP2018156221A
Publication Date:
February 27, 2020
Filing Date:
August 23, 2018
Export Citation:
Assignee:
NIPPON RIETEC CO LTD
International Classes:
E01F13/04
Domestic Patent References:
| JP2014031637A | 2014-02-20 | |||
| JP2013001250A | 2013-01-07 | |||
| JP2016084672A | 2016-05-19 | |||
| JP2003171915A | 2003-06-20 |
Foreign References:
| US5438799A | 1995-08-08 |
Attorney, Agent or Firm:
Yu Koyama