This invention relates to three bars type resisting equipment. It includes backing sheet (1), and there is chief axis (10) with two bearings on its central bearing block. Three bars rotating head (11) with three bars at 120 degrees is fixed before chief axis. The three bars rotating head includes emergency drop bar mechanism (110). Ratchet (2) inserted installed with key pin s at back of chief axis, and three rectangular gaps (201) with 120 degree are at lateral of ratchet (2), and twelve triangular ratchets with 20 degree space are opened among the three rectangular gaps central lines. Symmetrical fixed falling pawls (21a, 21b) are fixed at both sides of ratchet (2) to drive tubular electromagnet (22a, 22b). Cloverleaf cam (3) is fixed on coaxial surface of ratchet (2) by three bolts. It also includes rotatable guide brake block (4) fixed on base plate (1), so the defect of three bars breaking off and rebounding is solved, the control and adjustment is easy and reliable and the cost is reduced.