Pipe jacking guide rail capable of reducing friction force

The pipe jacking guide rail capable of reducing the friction force comprises a bearing mechanism and two or more friction force weakening mechanisms, the bearing mechanism comprises two main bearing beam longitudinal rods, fixing mechanisms are arranged on the main bearing beam longitudinal rods, and all the friction force weakening mechanisms are arranged between the two main bearing beam longitudinal rods. The friction force weakening mechanism comprises a secondary bearing beam vertical rod, a roller and two reinforcing mechanisms, the secondary bearing beam vertical rod is erected between the two main bearing beam longitudinal rods, and each reinforcing mechanism comprises a first secondary bearing beam vertical rod, a second secondary bearing beam vertical rod and a connecting rod. The height and the width of the guide rail can be adjusted, so that jacking pipes with various sections and various weights can be borne, the friction force between the jacking pipes and the guide rail can be reduced through t