Plate type bidirectional lock

The utility model discloses a plate type two-way lock which comprises a valve body and a valve element assembly. The valve element assembly comprises a valve element bush in threaded connection with the valve body, a valve deck in threaded connection with the valve element bush, a compression spring, an overload protection device, a valve element, a reset spring, a valve cone, a guide sleeve and a valve seat. Six placing holes are formed in the upper side and the lower side of the valve body, and the valve element assemblies are placed on the two outmost sides of the lower portion. Opening and locking of two cavities of a hydraulic jack in a hydraulic system are achieved through different working states of the two valve element assemblies, and safety and working efficiency of a hydraulic support in the working process are guaranteed. The plate type bidirectional lock is compact in structure, reliable in sealing performance, stable and reliable in performance and long in service life. 本实用新型公开一种板式双向锁，包括阀体和阀芯组件。