Trackless inducing electric extension gate

The present invention relates to electric extension gate, and is one kind of stable and reliable automatic trackless inducing electric extension gate. The trackless inducing electric extension gate includes main chassis, right and left driving motors set inside the chassis, wheels below the main chassis, control circuit on the circuit board inside the main chassis, metal detectors connected to the control circuit, metal blocks set in the wheel running platform and corresponding to the metal detectors. The metal detectors with inductive approach switch connected to the control circuit are transversely arranged, and the metal blocks are longitudinally arranged. The present invention has novel, simple and reasonable structure. 本发明涉及电动伸缩门，具体涉及能自动导航、使用稳定、可靠性好、自动化程度高的无轨感应电动伸缩门，无轨感应电动伸缩门，包括主机箱2及其内置的左、右驱动电机5、6，还包括设置于所述主机箱2下端左、右侧的机头轮子3、4，其特征在于，在所述主机箱2内还设置有控制电路及与其连接的若干金属探测器8，并在机头轮子3、4运行平台7上设置有与所述金属探测器8相对应的若干金属块9。金属探测器8包括电感式接近开关，且电感式接近开关与控制电路连接；金属探测器8呈横向等分排列；金属探测器8的数量不少于两个；金属块9呈纵向等分排列；在主机箱2的内壁上设置有电路板10，控制电路设置在电路板10上。本发明构造新颖，结构简单、合理。