Heavy-duty vehicle steering test device

The utility model belongs to the technical field of vehicle steering equipment performance test, and particularly relates to a heavy-load vehicle steering test device. The utility model provides a heavy-load vehicle steering test device, and aims to solve the problem that a test bench of a heavy-load vehicle steering test device in the prior art is fixed, so that the test precision of steering equipment is low. A heavy-load vehicle steering test device comprises a mounting platform for mounting steering equipment and a supporting seat for supporting the mounting platform, the mounting platform is fixed on the supporting seat through elastic supporting pieces, and the elastic supporting pieces are uniformly distributed between the mounting platform and the supporting seat; the supporting seat is provided with a driving mechanism for driving the mounting platform to generate vibration relative to the supporting seat, and the steering equipment can obtain a vibration working condition closer to reality when bein