Bearing fixing block and stretching machine inlet telescopic device applying same

The utility model relates to a bearing fixing block and a stretching machine inlet telescopic device applying the same, the bearing fixing block comprises a body, and the bearing fixing block further comprises a rotating pin shaft fixedly connected to the body; a rotating pin shaft is arranged in the inner ring, and an outer ring is arranged on a thrust ball bearing in a center hole of the body; the axis of the limiting bearing is parallel to the rotating pin shaft; and the rolling bearings are positioned on two sides of the body and have axes vertical to the rotating pin shaft. The bearing fixing block is high in integration level and convenient to install, and the service life of a transmission part is prolonged due to selection of bearing types; the device overcomes the defects that in the prior art, a track beam is large in dead weight, and a transmission part is short in service life, transmission is stable, reliability is high, and energy consumption of the device is reduced. 一种轴承固定块及应用该固定块的拉伸机入口伸缩装置，其中