Bridge erecting machine for road and bridge erecting construction: Fid-Bau Portal

Bridge erecting machine for road and bridge erecting construction

ZHAO ZIRU / LIU LU / SONG YUFEI / JING HE / LI XIAOMING

The invention relates to the technical field of bridge girder erection machine construction, in particular to a bridge girder erection machine for road and bridge erection construction, which comprises a machine arm, a front support leg assembly, a middle support leg assembly, a rear support leg assembly, a hoisting crane, a sliding table, a portal frame and a self-locking support leg, the self-locking support leg comprises a fixed column, a movable frame and a linear driver, and a base in contact with an abutment is arranged at the bottom of the movable frame; an inner cavity is formed in the base, a positioning bayonet is formed in the bottom of the base, a movable pressing plate is slidably installed in the inner cavity in the base, a positioning sleeve is arranged below the movable pressing plate, a side through hole is formed in the side wall of the positioning sleeve, and a through hole which is the same as the side through hole in position is formed in an installation well of the abutment. According to the self-locking supporting leg, the movable frame and the fixed column are driven by the linear driver to move relatively, so that the self-locking supporting leg has a proper length, and the position of the self-locking supporting leg can be locked by matching the positioning bayonet in the bottom of the base with the mounting well and the positioning insertion blocks on the abutment.

本发明涉及架桥机施工技术领域，具体是涉及一种路桥架设施工用架桥机，包括机臂、前支腿总成、中支腿总成、后支腿总成和吊装行车、滑台、龙门架和自锁支脚，自锁支脚包括固定柱、活动架和直线驱动器，活动架底部设置有接触墩台的底座，底座内设置有内腔，底座底部设置有定位卡口，底座内的内腔中滑动安装活动压板，活动压板下方设置有定位套筒，定位套筒侧壁设置有侧通孔，墩台的安装井上设置有与侧通孔位置相同的通孔，定位套筒内滑动安装与侧通孔数量相同的定位插块，本发明通过直线驱动器驱动活动架和固定柱相对移动，从而使自锁支脚具有合适的长度，底座底部的定位卡口配合墩台上的安装井和定位插块即可对自锁支脚的位置进行锁定。

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