Speed reducer fatigue test bench for simulating horizontal working condition

The utility model relates to the technical field of speed reducer service life detection, in particular to a speed reducer fatigue test bench for simulating a horizontal working condition, which comprises a support seat provided with a machine cover at the top, an adapter plate arranged above the machine cover, and a horizontal support frame arranged above the adapter plate. One end of the support frame is coaxially and fixedly arranged on the adapter plate, and the other end of the support frame is provided with a detachable load plate; a sun gear shaft driven by a motor is rotationally arranged at the bottom of the machine cover in a sealed mode, and the motor is fixedly arranged on a support; the machine cover is fixedly connected with the pin wheel housing in a bolting manner, the adapter disc is coaxially fixed at the planet carrier end, and the sun gear shaft is meshed with the planet gear, so that the fatigue simulation test of the speed reducer under the horizontal working condition is realized. 本实用新型