Stop Fall Device가 부착된 도르래식 장력조정장치 개발

In Korea, the individual tension device (pulley type and tensile ratio of 1:5), which makes it possible to apply the tension to contact wire and messenger wire individually, is used in order to increase the tension of the high-speed railroad line. The tension of the contact wire should be maintained within a certain of range even under the temperature change, because the change of the tension of the contact wire will affect the quality of the current collection on the pantograph. Therefore, the authors have developed the pulley-type tension device with stop fall device, which enables to check the spacing of pulleys within a proper range and to prevent line drop due to the damage on the wire, so that the change of the tensile load of X value (line side) of the contact wire by temperature change can be controlled and well maintained.