中联重科ZR140L旋挖钻的优点包括：1. 强大的受力能力：ZR140L旋挖钻采用了稠密的钢板焊接结构和高强度材料，能够承受大量的工作载荷，具有较高的受力能力。2. 高效的工作性能：旋挖钻配备了强劲的发动机和液压系统，能够以较高的转速和扭矩进行旋挖作业，提高工作效率和生产率。3. 精准的控制系统：ZR140L旋挖钻配备了先进的液压控制系统，具有高度精确的控制能力，能够实现精准的位置调整和操作，提高工作的精度和可靠性。4. 安全可靠：该型号旋挖钻具备多重安全保护措施，如限制器、过载保护装置等，能够有效保护设备和操作人员的安全，减少事故发生的风险。5. 便捷的维护保养：ZR140L旋挖钻的维护保养点设置合理，易于维修和保养，节省了维护时间和成本。6. 多功能应用：该型号旋挖钻可以根据需要配备多种工作装置，如钻杆、钻头等等，可适应不同的施工需求，提供多种功能和选择。

Advantages of Zoomlion ZR140L rotary drilling rig include:1. Strong stress capacity: ZR140L rotary drilling rig adopts dense steel plate welded structure and high-strength materials, which is able to withstand a large amount of working load with high stress capacity.2. High-efficiency working performance: the rotary drilling rig is equipped with powerful engine and hydraulic system, which is able to carry out rotary drilling operation with high rotational speed and torque to improve Precise control system: ZR140L rotary drilling rig is equipped with advanced hydraulic control system, which has highly precise control ability, and can realize precise position adjustment and operation, and improve the precision and reliability of work. 4. Safe and reliable: This model of rotary drilling rig is equipped with multiple safety protection measures, such as limiter, overload protection device, etc., which can effectively protect the safety of the equipment and operators, reduce the risk of accidents. 5. Convenient maintenance: The maintenance points of ZR140L rotary drill are reasonably set up, easy to repair and maintain, which saves maintenance time and cost.6. Multi-functional application: This model rotary drill can be equipped with many kinds of working devices according to the needs, such as drilling rods, drilling bits and so on, which can be adapted to the different construction needs and provide a variety of functions and choices.