Transmission with built-in air cylinder

The transmission with the built-in air cylinder comprises a front shell, a middle shell and a rear shell which are connected with one another, a groove body is arranged on the inner side of the middle shell, the air cylinder is embedded in the groove body, a piston rod is arranged in the middle of the air cylinder, and the piston rod enters the middle shell from the front of the rear shell. The air cylinder is installed in the transmission, so that the transmission is of an integrated design, transportation is convenient, and the service life is guaranteed. 本实用新型涉及一种气缸内置的变速器，包括相互连接的前壳体、中壳体和后壳体，所述的中壳体的内侧设有槽体，所述的槽体内嵌入有气缸，所述气缸中部设有活塞杆，所述活塞杆从后壳体的前面进入中壳体。本实用新型将气缸安装于变速器内部，使得变速器为一体式设计，方便运输，且保证了使用寿命。