Secondary lifts dolly link plate height -adjustable device

The utility model discloses a secondary lifts dolly link plate height -adjustable device belongs to vapour and protects the trade and lift quick -witted manufacturing technology, include: its characterized in that is constituteed with retaining ring, high -strength bolt, the flexible arm component of gyro wheel to adjustable link plate subassembly, gyro wheel, axle: adjustable link plate subassembly is by safeguard, roller shaft, adjustable link plate weld forming, adjustable link plate four symmetry s' unthreaded hole openly is provided with by the lower part, the unthreaded hole is two roller shafts of symmetrical up, the safeguard has been welded respectively to its both sides, roller shaft one end and adjustable link plate weld even, be equipped with the gyro wheel and the retaining ring is used to the axle in proper order on the other end axial plane, the flexible arm component of gyro wheel is linked firmly the flexible arm component of adjustable link plate subassembly and gyro wheel through four high -strength bolt by flexible arm and link plate weld forming. The cooperation of relative hole site realizes that the secondary lifts dolly link plate height -adjustable on adjustable link plate and the link plate through adjusting, not only is applicable to the not motorcycle type maintenance on co -altitude chassis and uses, in addition convenient to use, reliable.