JZW-4型接触网检修作业车主要适用于铁路接触网施工作业、日常检修维护、保养、抢险等作业，也可兼做牵引车辆，与其他车辆连挂进行接触网的抢修作业。
JZW-4 OCS working car is mainly used for construction operation, daily maintenance, rescue and other operation of overhead catenary of the railway. It can also be used as a traction car to carry out immediate repair operation of the OCS while being connected with other vehicles.
该车为液力传动的四轴作业车，发动机额定功率为353kW，最高运行速度120km/h。车辆配备升降回转作业台，采用双作用油缸，可实现升降和左、右各120度的回转；可同时供六、七位施工人员同时在平台上作业。高空作业吊篮主要用于高空作业，完成接触网上部设备的安装拆卸及调整工作。高空作业吊篮带有自动调平系统。
The vehicle is a four-axle working car using hydrodynamic drive; its rated engine power is 353kW and the maximum traveling speed is 120km/h. The vehicle is mounted with a lifting and slewing operation platform able to achieve lifting and120° slewing to left and right through double acting cylinder. It can also provide the operation space for six or seven operators at the same time on the platform. High altitude operation basket is mainly used to complete installation, removal and adjustment of upper equipment of the OCS during high altitude operation. High altitude operation basket is provided with automatic leveling system.
