Lower door interlocking device of gas insulated switchgear

The utility model provides a lower door interlocking device of an inflatable cabinet, which comprises a cabinet body, an operating shaft and an interlocking assembly, the interlocking assembly is provided with an interlocking rod capable of sliding up and down, and the interlocking rod has an unlocking state separated from a lower door and a locking state interlocked with the lower door. According to the scheme, the interlocking rod on the interlocking assembly is connected with the lower door, the interlocking is hard interlocking, so that the reliability of the lower door interlocking device is higher, the service life of the lower door interlocking device is greatly prolonged, in addition, the operation shaft is additionally arranged to directly drive the interlocking assembly through the cam, the number of parts is small, the structure is simple, and the production cost is low. 本实用新型提供一种充气柜的下门联锁装置，包括柜体、操作轴和联锁组件，联锁组件具有卡上下滑动的联锁杆，联锁杆具有与下门分离的解锁状态，以及与下门联锁的锁止状态，与现有技术中通过拉绳软联锁相比，本方案通过联锁组件上的联锁杆与下门连接，此联锁为硬联锁，这样使下门联