Wind power gear box testing device

The invention discloses a wind power gear box testing device including a motor, a secondary gear box, a primary gear box, a generator, a gear box low-speed shaft coupling, a first gear box high-speed shaft coupling, a second gear box high-speed shaft coupling, a gear box test platform, a secondary gear box support, a primary gear box support, and a control and acquisition system, the secondary gear box is connected to the secondary gear box support via a torque flange, the primary gear box support includes a general support and a torque arm support arranged on the general support, and the torque arm support is connected with the torque arm of the primary gear box. The wind power gear box testing device is applicable to the test of wind power gear boxes in different specifications.