| 摘要 |
PURPOSE:To permit a broader space to be available for a narrow control chamber by providing a requiured number of grooves in a foundation for installing the control board, burrying casters movable along the respective grooves in these grooves and securing the control board to the casters. CONSTITUTION:A plurality of grooves 26 are provided in a foundation 22, and casters 23 freely movable along these grooves are burried in the grooves. The burried casters are secured by bolts and nuts 24 to a channel base 21 of a control board 2. Thus, at the time of maintenance and inspection the control board 2 can be moved along the grooves by applying forces to it, so that it is possilbe to permit a broader space to be available for a narrow control chamber. The casters 23 have a structure, which never gets out of the asociated groove 26 and sufficiently strong to support the control board. |
