The utility model relates to a petroleum equipment technical field, the more specifically thread protector cover mobile device that says so, rocking handle connect the surface at the initiative tapergear, the one end and the the initiative taper gear swing joint of connecting rod, the other end and the driven bevel gear wheel swing joint of connecting rod. The left and right sides of driven bevelgear wheel is provided with a head rod respectively, and the lower extreme of head rod is connected with the driven bevel gear wheel is articulated, and the upper end of head rod is connected with the lower extreme of second connecting rod is articulated, and the upper end of second connecting rod articulates to be connected on the clamp, and the stud group link is on the clamp. Personally, can accomplish the dismantlement that the thread protector overlaps through thread protector cover mobile device is single, bare -handed (or breakout tongs) the dismantlement that is interrupted present thread protector cover turns into continuous thread protector cover removal dismantlement, save time and the manpower, alleviate intensity of labour, reduce production manufacturing cost, improve work efficiency.