Horizontal force bearing device of dynamic testing machine

The utility model relates to a horizontal force bearing device of a dynamic testing machine. The device comprises a horizontally-arranged power source, a base, stand columns installed at the four corners of the base and an upper cross beam installed at the tops of the stand columns. Two straining beams and a bearing beam are connected between the two stand columns facing the power source and the power source, one ends of the two straining beams are fixedly connected to the same side of the bearing beam, the other ends of the straining beams are correspondingly and fixedly connected to the sidefaces of the two stand columns, and the other side of the bearing beam is connected with the power source. Furthermore, the end, connected with the bearing beam, of the power source is sleeved with abearing, and the bearing is installed on the bearing beam. According to the utility model, the bearing beam and the straining beam are directly applied in the horizontal force direction to be used asa horizontal force bearing