Tongyousheng Servo Electric Cylinders Support Rail Transit Vehicle Test Benches and Enable Automated Rail Equipment Testing

Rail transit vehicle performance testing is a core part of ensuring safe train operation. A complete vehicle test bench needs to perform multiple operations, including vehicle body positioning, wheelset restraint, and load simulation. These applications place high requirements on the thrust stability, synchronization control accuracy, and long-term reliability of linear actuators. Traditional hydraulic systems have limitations such as oil leakage, complicated maintenance, and insufficient control accuracy. As a core linear drive unit for complete rail transit vehicle test benches, Tongyousheng servo electric cylinders have been successfully applied to a large-scale rail transit vehicle testing production line.

In this complete vehicle testing project, Tongyousheng servo electric cylinders are integrated into the base fixtures of the test bench and used for lateral positioning, stopper pushing, and wheelset locking after the train is positioned. When the train enters the testing station, multiple electric cylinders receive commands from the control system and work together to accurately push the yellow limit stoppers into position, securely restraining the wheelsets of the bogie. This establishes a safe and stable testing boundary for subsequent complete vehicle performance tests, including vehicle body strength, dynamics, and braking performance. The entire operation responds smoothly, with thrust and movement speed adjustable in real time, helping prevent impact damage to the vehicle body and bogie components under heavy-load conditions.

Advantages of Tongyousheng Servo Electric Cylinders in Rail Transit Vehicle Test Benches

1. Multi-Cylinder Synchronized Control for High-Precision Positioning Under Heavy Loads

Using servo screw drive technology, the electric cylinders support dual closed-loop control of position and thrust, enabling synchronized operation of multiple electric cylinders. Under the heavy-load conditions of complete vehicle testing, repeat positioning accuracy remains stable and controllable, meeting the requirements for precise positioning and controlled loading during testing.

2. Clean and Oil-Free Operation for a Cleaner Vehicle Testing Environment

Compared with hydraulic cylinders, servo electric cylinders do not involve the risk of hydraulic oil leakage. They do not contaminate train bodies, bogies, or test bench equipment, helping maintain a clean testing facility and reducing safety risks associated with oil contamination. This also meets the cleanliness management requirements of rail transit testing workshops.

3. Digital Monitoring for Test Data Acquisition

The electric cylinders can provide real-time feedback on position, thrust, and operating status. They can be connected to the test bench PLC and host computer system, making test process data traceable. Multiple protection functions, including overload protection and hard and soft limit protection, are integrated into the system. If an abnormal load occurs, the equipment can stop immediately, helping protect expensive train test samples and testing equipment.

4. Flexible Installation and Lower Maintenance Requirements

The integrated and compact structure eliminates the need for a hydraulic power unit and extensive hydraulic piping, while simplifying on-site wiring and adapting to the dense base-fixture layout of the test bench. With fewer internal moving components, the electric cylinders require only regular maintenance. Compared with hydraulic systems, they can significantly reduce subsequent inspection and maintenance workload, making them suitable for long-duration intermittent testing operations.

5. Industrial Bus Communication for Easy Test System Integration

Tongyousheng servo electric cylinders support mainstream industrial communication protocols such as Modbus and EtherCAT. They can be quickly connected to the complete vehicle testing control system to enable automated process coordination and support the digital upgrading of rail transit vehicle testing equipment.

Extended Applications in the Industry

In addition to wheelset positioning fixtures for complete vehicle test benches, Tongyousheng servo electric cylinders can also be applied to rail transit equipment testing and maintenance scenarios such as bogie fatigue test benches, vehicle body static pressure testing, door durability testing, train maintenance alignment fixtures, and multi-degree-of-freedom motion simulation platforms.

According to project requirements for load, stroke, protection level, and synchronization, Tongyousheng can provide customized servo electric cylinder systems for non-standard applications.

Suzhou Tongyousheng Electronic Technology Co., Ltd. focuses on the R&D and manufacturing of servo electric cylinders, linear modules, and six-degree-of-freedom motion platforms. With a focus on precision linear transmission technology, Tongyousheng continues to provide stable and reliable linear actuator products and integrated technical solutions for customers in rail transit, automotive testing, simulation, industrial automation, and other industries.