Design of Pitch Balance Mechanism of a Vehicle-mounted Radar

In order to achieve the pitch switching function of the antenna array of a vehicle-mounted radar at transportation status and working status, a pitch balance mechanism is designed. The torque balancing mechanism combining torsion spring and four-bar linkage balances the gravity torque of antenna array. The lock and drive mechanism combining worm & worm gear and pitch motor realizes the position locking and switch drive of antenna array. The structural design and analysis of the torsion spring and the four-bar linkage indicate that the torque balancing mechanism can balance the gravity torque of antenna array, which makes the lock and drive mechanism bear less load. The design requirements of the pitch switching mechanism, such as lightweight, quick response and easy maintenance are satisfied.