Gearbox air cylinder integrated self-locking and interlocking structure

The invention relates to a gearbox air cylinder integrated self-locking and interlocking structure, and belongs to the technical field of commercial vehicle gearboxes. Comprising a half gear shifting mechanism which comprises a gear shifting control shaft connected in a gearbox shell in a sliding mode, and a gear shifting fork is fixedly connected to the gear shifting control shaft; the climbing gear shifting mechanism comprises a climbing gear operating shaft connected in the gearbox shell in a sliding manner, and a climbing gear cylinder for driving the climbing gear operating shaft to slide in a reciprocating manner; the gear shifting interlocking mechanism comprises an interlocking pin connected to the gear climbing air cylinder in a sliding mode, and the interlocking pin is used for locking the gear shifting fork or the gear climbing control shaft. When the half-gear shifting mechanism is engaged into a low gear or a high gear, the gear shifting fork drives the interlocking pin to lock the climbing gear