Loaderdigger digs arm locking device

The utility model discloses a loaderdigger digs arm locking device, including flexible axle (5), and (2) and flexible axle support (4) are geted in touch to the arm of fixing respectively on the solid of revolution (C) that digs, flexible axle (5) are including the bulb end (53) that is located one end, the handle end (51) that is located the other end to and ball pivot piece (52) in the middle part of being located, bulb end (53) fix on digging arm couple (2), flexible axle support (4) is connected in ball pivot piece (52), handle end (51) is fixed inside the driver's cabin. After the loaderdigger adopts and originally to dig arm locking device, greatly increased the security and the suitability of host computer, can further satisfy the operating mode that construction requirements is harsher, also can adapt to more operating modes.