Mechanical arm grabbing in-place detection device and mechanical arm

The utility model discloses a mechanical arm grabbing in-place detection device which comprises a coil connected to a mechanical arm, an inductor connected with the coil and used for detecting the current of the coil, a rod piece penetrating through the coil and capable of moving in the axial direction of the coil, and a magnet arranged on the rod piece. In the initial state, one end of the rod piece is located below a grabbing part of the mechanical arm, and the magnet is located in the coil or below the coil, so that when the mechanical arm grabs an object, the rod piece can be pushed upwards by the object, and the coil cuts a magnetic induction line of the magnet to generate current. The utility model further discloses the mechanical arm provided with the mechanical arm grabbing in-place detection device. The mechanical arm grabbing in-place detection device can detect whether the mechanical arm grabs an article in place or not, and the situation that the mechanical arm still operates according to a design