Excavator arm sleeve

The utility model relates to the technical field of excavators, and discloses an excavator arm sleeve which comprises an outer sleeve arm, the outer sleeve arm is connected with an inner telescopic arm in a sleeved mode, and one side, located in the outer sleeve arm, of the inner telescopic arm is fixedly connected with a clamping assembly. The inner telescopic arm is adjusted to a proper length, hydraulic oil is pumped into the cylinder body through the oil pipe, then the piston rod and the cylinder body are driven to move relatively, the movable rod is driven to move, the abutting rod is further made to abut against the outer sleeve arm, and fixing of the outer sleeve arm and the inner telescopic arm is achieved. The extension length of the inner telescopic arm can be controlled at will through the clamping assembly, the flexibility degree of the device is improved, and the excavator arm sleeve can better adapt to different use scenes. The abutting rod is rotationally connected with three movable rods, two