发明授权
- 专利标题： Track tamping and leveling machine
- 专利标题（中）： 跟踪和水平机
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申请号： US21408271申请日： 1971-12-30
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公开(公告)号： US3799058A公开(公告)日： 1974-03-26
- 发明人: PLASSER F , THEURER J
- 申请人： PLASSER BAHNBAUMASCH FRANZ , THEURER J
- 专利权人： Plasser Bahnbaumasch Franz,J Theurer
- 当前专利权人： Plasser Bahnbaumasch Franz,J Theurer
- 优先权： AT145771 1971-02-19; AT736371 1971-08-23
- 主分类号： E01B27/17
- IPC分类号： E01B27/17 ; E01B35/00 ; E01B27/16
摘要：
A track tamping and leveling machine with a track tamping unit, a track lifting unit and a reference system for the leveling operation comprises a continuously adjustable electrical track level indicator. The indicator has one indicator part in constant connection with the tensioned reference wire of the reference system and another part in connection with the track to produce a control signal corresponding to the track level prevailing at the track point whereto the other indicator part is connected. A continuously adjustable control device for the track lifting unit drive is electrically connected to the indicator and receives the control signals to adjust the device and correspondingly actuate the drive for the track lifting unit.