Power transmission protection mechanism for rail crane

The invention discloses a power transmission protection mechanism for a rail crane. The power transmission protection mechanism comprises a trolley support and two reduction gearboxes, wherein the trolley support and the two reduction gearboxes are connected to the trolley, and the trolley support is located in the middle of the two reduction gearboxes; a torsion arm is connected to the reductiongearboxes, and a buffer device is connected between the torsion arm and the trolley support; the trolley support is connected with a protective baffle cover, and the protective baffle cover is buckledon the outer side of the buffer device and is clamped with the torsion arm. The power transmission protection mechanism for the rail crane is stable and reliable, and plays an effective buffering anddamping protection role on the reduction gearboxes. When the rail crane runs at a high speed, the impact force borne by the reduction gearboxes is transmitted to the buffer device through the torsionarm, the buffer device can