摘要：【中文】本发明涉及一种U形锁，包括锁体和U形锁梁，锁体内设有左锁舌、右锁舌、左锁舌弹簧、右锁舌弹簧和第一控制装置，第一控制装置包括电机、圆柱齿轮、扇形齿轮、左锁舌拨销、右锁舌拨销、第一限位止挡部和第二限位止挡部，工作时，电机驱动圆柱齿轮并带动扇形齿轮旋转，然后经左锁舌拨销和右锁舌拨销分别拨动左锁舌和右锁舌外伸闭锁或内缩开锁，第一限位止挡部用于对扇形齿轮处于闭锁位置时的限位止挡，第二限位止挡部用于对扇形齿轮处于开锁位置时的限位止挡。该U形锁结构简便、可靠性高、寿命长、零部件安装制作容易、生产成本低，且兼具外部电子设备智能开锁和机械钥匙开锁两种功能，使用安全方便。 【EN】The invention relates to a U-shaped lock, which comprises a lock body and a U-shaped lock beam, wherein a left lock tongue, a right lock tongue, a left lock tongue spring, a right lock tongue spring and a first control device are arranged in the lock body, the first control device comprises a motor, a cylindrical gear, a sector gear, a left lock tongue shifting pin, a right lock tongue shifting pin, a first limit stopping part and a second limit stopping part, when the U-shaped lock works, the motor drives the cylindrical gear and drives the sector gear to rotate, then the left lock tongue and the right lock tongue are respectively shifted to extend outwards to lock or retract inwards to unlock through the left lock tongue shifting pin and the right lock tongue shifting pin, the first limit stopping part is used for limiting stopping when the sector gear is in a locking position, and the second limit stopping part is used for limiting stopping when the sector gear is. The U-shaped lock is simple and convenient in structure, high in reliability, long in service life, easy to install and manufacture parts, low in production cost, safe and convenient to use, and has two functions of intelligent unlocking of external electronic equipment and mechanical key unlocking.

摘要：【中文】本发明提供一种可拆卸的高速桥梁转体钢支座用下球座，涉及桥梁建设技术领域，以解决现有的可拆卸桥梁转体钢支座用下球座在拆卸时，需要将桥梁先顶起再进行拆卸，首先将桥梁顶起的操作极为困难，而且桥梁顶起再落下，也使得桥梁存在极大的安全隐患，有可能落位出现偏差的问题，包括下球座；所述下球座的上端水平安装有下球铰。本发明中由于下球座的左端棱边处和右端棱边处分别固定安装有水平的侧支板，也可同时起到固定的作用，而当施工结束后，可使得挤紧块与自卸块相分离，使得下球铰部分落下，从而使得装置与桥梁之间留有空隙，可自由撤出，综上所述，本装置在使用时，更加安全高效，重复利用率极高。 【EN】The invention provides a detachable lower ball seat for a high-speed bridge swivel steel support, which relates to the technical field of bridge construction and aims to solve the problems that when the existing lower ball seat for the detachable bridge swivel steel support is detached, a bridge needs to be jacked up and then detached, the operation of jacking the bridge is very difficult, and the bridge is jacked up and then falls down, so that the bridge has great potential safety hazards and deviation possibly occurs in the falling position; and a lower spherical hinge is horizontally arranged at the upper end of the lower ball seat. According to the invention, the horizontal side support plates are respectively and fixedly arranged at the left end edge and the right end edge of the lower ball seat, so that the fixing effect can be achieved, and after construction is finished, the squeezing block and the self-discharging block can be separated, so that the lower ball hinge part falls down, a gap is reserved between the device and a bridge, and the device can be freely withdrawn.