Abstract:
본 발명은 차륜에 설치되는 전자석 셀, 전자석 셀에 전원을 공급하는 전원 공급부, 전원 공급부에서 전자석 셀에 공급되는 전류를 조절하는 전류 조절부, 차륜의 회전위치를 측정하는 회전위치 측정부 및 회전위치 측정부에 의해 측정된 차륜의 회전위치에 따라 전류 조절부를 제어하여 전원 공급부로부터 전자석 셀에 공급되는 전류를 제어하는 제어부를 포함하는 것을 특징으로 한다.
Abstract:
The present invention provides an automatic height maintaining device for a railroad bed, a railroad bed having the same, and an automatic height maintaining method of the railroad bed using the same. The present invention comprises: a lower expansion member (20) which comprises a lower plate (21) and vertical walls (22); an upper support member which comprises an upper plate (11) and side walls (12) and covers the top of the lower expansion member to form a flowable filler filling space (30); a flowable filler storage part (13) which is formed on the upper plate (11) and has an preliminary filling space connected to the flowable filler filling space (30); a spring member (14) which applies elastic force to the lower plate (21); and flowable filler (31) which is filled in the flowable filler filling space and the preliminary filling space and flows by gravity. The upper support member (10) and the lower expansion member (20) are arranged on the bottom surface of a railroad bed (100). When the roadbed below the railroad bed is subsided, the lower expansion member (20) is subsided by the elastic force of the spring member (14), the flowable filler filling space (30) is expanded, and the flowable filler (31) automatically flows into the expanded flowable filler filling space (30) to maintain the height of the railroad bed (100).