Mine car blocking device

The utility model discloses a mine car blocking device, its structure includes the buckle, the drum, the connecting rod, fixed projection, the locking head, lower connecting rod, the extension rod, connecting rod and lower connecting rod welding structure as an organic whole, the locking head nestification is at the middle part of connecting rod under with, structure as an organic whole on the drum is installed to the buckle, the drum is the middle part and connecting rod vertical welding of circular structure and below, fixed projection be equipped with two and respectively with connecting rod vertical welding, the locking head nestification is at the connecting rod and the lower middle part adoption interference fit of connecting rod, the inside clearance fit that adopts of extension rodnestification connecting rod under, be equipped with the locking head through its structure, can be through with handing -over department of the inside lockhole nestification of ring body at connecting rod under with when us