System response test-based dynamic characteristic testing device for contact network

The utility model provides a contact net dynamic feature test device based on system response test, which comprises a pantograph and a laser distance testing sensor equipment arranged below the sliding plate and composed of a support, a supporting plate, and a laser distance testing sensor. The advantage of the utility model is that the product does not change the original pantograph structure, and not provide any sensor on the pantograph, and not change the feature of pantograph to make the test results closer to the actual condition. In addition, the utility model belongs to non-contact testing and is separated from the high-voltage end, thus being not subject to the impact of the magnetic disturbance of the electric arc formed by offline pantograph and making the resolution and precision of test signals higher. The utility model is mainly used to the real test of dynamic feature parameters of high-speed electric railway contact grid.