Protective umbrella for operation on line pole

The protective umbrella comprises an umbrella body, a cross arm fixing seat, a connecting buckle and a fixing rope, the cross arm fixing seat comprises a base, notches for containing the cross arm areformed in the middles of the left side and the right side of the base, strip holes communicated with the notches in the same side are formed in the left side and the right side of the upper side faceand the lower side face of the base respectively, and the strip holes are formed in the transverse direction; the base is locked with the cross arm through the bolts penetrating through the strip holes in the same side and the notches, the bolts are tightly attached to the outer side faces of the cross arm in the notches and are locked with the base through the nuts, the insulating tube is vertically installed in the middle of the upper side face of the base, the lower end of an umbrella rod of the umbrella body can be inserted into the insulating tube, and the umbrella rod is locked with theinsulating tube through th