某车载雷达俯仰平衡机构设计

Design of Pitch Balance Mechanism of a Vehicle-mounted Radar

为实现某车载雷达天线阵面在运输状态和工作状态下的俯仰翻转功能,设计了俯仰平衡机构。扭簧和四连杆相结合的力矩平衡机构平衡天线阵面的重力矩,蜗轮蜗杆与俯仰电机等结合的锁定及驱动机构实现对天线阵面的位置锁定及翻转驱动。对扭簧和四连杆的结构设计及分析表明,力矩平衡机构能够平衡天线阵面的重力矩,从而使得锁定及驱动机构承载较小,能够满足翻转机构的轻量化、快速响应性和易维护性等设计要求。

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.