FASTENING BOLT STRUCTURE FOR RAIL FASTENING DEVICE, COPING WITH MECHANICAL CONSTRUCTION
PROBLEM TO BE SOLVED: To provide a fastening bolt structure for a rail fastening device, which can be easily gripped by a construction machine, makes a condition of contact between the fastening bolt and a fastening bolt support inner surface of a tie plate always constant, can achieve a stable fast...
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Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a fastening bolt structure for a rail fastening device, which can be easily gripped by a construction machine, makes a condition of contact between the fastening bolt and a fastening bolt support inner surface of a tie plate always constant, can achieve a stable fastening state even in a preset state, and copes with a mechanical construction.SOLUTION: A fastening bolt structure for a rail fastening device, coping with a mechanical construction, is configured in such a manner that: a lateral face 2 of a head of the fastening bolt has a polygonal shape 3, and a fastening bolt 1 is easily gripped by a construction machine and can be surely fixed; an extension part 7 extending on a rail side is formed in a bottom 6; the fastening bolt 1 provided with a spherical support 9 consisting of a part of a spherical surface is provided on a top face 8 of the bottom; and the condition of contact between the fastening bolt 1 and a fastening bolt support inner surface of a tie plate is always set to a constant state to achieve a stable fastening state even in a preset state.
【課題】 施工機械で容易に掴むことができ、締結ボルトのタイプレートの締結ボルト支持部内面との接触状態を常に一定とし、プリセット状態でも安定した締結状態を実現することができる、機械施工に対応したレール締結装置用締結ボルトの構造を提供する。【解決手段】 機械施工に対応したレール締結装置用締結ボルトの構造において、頭部の側面2を多角形状3となし、施工機械で容易に掴むことができ、確実に固定することを可能とし、かつ底部6にレール側に延長された延長部7を形成し、その底部の上面8に球面の一部からなる球座9を設けた締結ボルト1を備え、この締結ボルト1のタイプレートの締結ボルト支持部内面との接触状態を常に一定とし、プリセット状態でも安定した締結状態を実現するように構成した。【選択図】 図1 |
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