Elevator and safety tongs thereof

The utility model relates to an elevator (100) and safety tongs (120). This safety tongs includes: when safety tongs when action centre gripping guide rail (109), through with friction between the guide rail generates voussoir (204) of brake force, and it is induced the moving direction's of voussoir guide block (202). With the friction takes place for the guide rail friction surface (204a) the side of voussoir is equipped with groove (402). When facing when the friction surface is observed, the last groove face (402a) in groove presents the V font for bilateral symmetry. In view of the above, when acting as the edges and corners planings guide rail surface of groove face, the horizontal component who is used in the guide rail resistance of groove face can cancel each other out, and the station keeping of messenger's voussoir is stablized to discharge efficiency that can improved groove inner friction powder. 本实用新型涉及种电梯(100)及其安全钳(120)。该安全钳包括：当所述安全钳动作时夹持导轨(109)，通过与所述导轨之间的摩擦生成制动力的楔块(204)；以及诱导所述楔块的移动方向的导块(202)。在