Garbage truck back door is from locking -type tilting mechanism

Garbage truck back door is from locking -type tilting mechanism, including hydro -cylinder, back door, master connecting -rod, auxiliary connecting rod, the hydro -cylinder is fixed on the hydro -cylinder mount pad, the hydro -cylinder mount pad is fixed on the box, hydro -cylinder one end hinge is on the hydro -cylinder mount pad, other end piston rod axle is even served at master connecting -rod no. 1, still axle even on the mount pad of master connecting -rod rear portion of opposite side should be held to the master connecting -rod, master connecting -rod rear portion mount pad is fixed on the box, the master connecting -rod other end is fixed at master connecting -rod forward -mounted seat, master connecting -rod forward -mounted seat axle is even served under the back door, auxiliary connecting rod one end is fixed behind the auxiliary connecting rod on the mount pad, the mount pad axle is even behind the auxiliary connecting rod on the mount pad crossbeam behind the auxiliary connecting rod, the auxiliary connecting rod other end is fixed before the auxiliary connecting rod on the mount pad, the mount pad axle is even served on the back door before the auxiliary connecting rod, when oil cylinder piston rod stretches out, promoting the master connecting -rod and going upward, the rethread auxiliary connecting rod drives the back door and goes upward and open, and during the oil cylinder piston rod withdrawal, it is down to drive the master connecting -rod, and the rethread auxiliary connecting rod drives the back door and down and close.