Hydraulically locking speed regulator and its locking method

Application Number: 00109227
Application Date: 2000.06.16
Publication Number: 1330003
Publication Date: 2002.01.09
Priority Information:
International: B61K7/02
Applicant(s) Name: Yang Zhihong
Inventor(s) Name: Yang Zhihong;Zhao Donghua
Patent Agency Code: 11242
Patent Agent: han baotian
Abstract A hydraulically locking speed regulator is composed of braking spring set, restoring spring set, hydraulic locking unit, braking arm, braking beam and bearer. It can be vertically installed to rails. Its locking method includes communicating the ends a and b of diverter valve with the inlet and outlet of check valve, and communicating P and O to the cavities A and B of cylinder. When braking, the piston moves from cavity A to B and the medium oil in cavity B flows into cavity A via O, a, check valve, b and p, realizing locking. When said diverter valve is reversed, said medium oil flows from cavity A into B, realizing unlocking.