[Problem] The purpose of the present invention is to provide a safe device with which, by forcibly braking the rotation of a grapple by means of an external force, it is possible even for an unskilled operator to bring the rotation to a halt and further to prevent accidents due to such rotation. Another purpose of the present invention is to provide such a device at lower cost. [Solution] According to the present invention, a grapple 8 has a lower frame 82 that has claws for gripping timber and an upper frame 81 that rotatably holds the lower frame 82, and is provided with a rotation braking means 9 that applies a brake on the rotation of the lower frame 82.