Hydraulic locking structure of power battery system assembly for pure electric battery changing heavy truck

The invention belongs to the technical field of pure electric battery changing heavy trucks, and particularly relates to a power battery system assembly hydraulic locking structure for a pure electric battery changing heavy truck, which comprises a lower bracket and hydraulic locking components, and the hydraulic locking components are arranged at four corners of the top of the lower bracket; the hydraulic locking assembly comprises a hydraulic lock fixing support, a hydraulic power mechanism, an outer detection switch, an inner detection switch, a hydraulic lock fixing lock catch, a manual switch and a hydraulic lock hook clamping plate, the hydraulic lock hook clamping plate is arranged in the middle of an inner cavity of the hydraulic lock fixing support, and the hydraulic lock fixing lock catch is arranged at the top of the inner cavity of the hydraulic lock fixing support. The hydraulic lock fixing lock catch is connected with the hydraulic lock hook clamping plate, and a hydraulic power mechanism is arr