Brake device and lifter

The invention discloses a brake device and a lifter. The brake device comprises a wedge block assembly, a brake assembly and a speed limiting mechanism, wherein the speed limiting mechanism comprises an elastic part which is connected to the brake assembly. In a descending process, acceleration of the lifter changes, and the elastic part drives the brake assembly to move; and when the lifter drops, the elastic part drives the brake assembly and the wedge block assembly to immediately clamp guide rails. The brake device provided by the embodiment of the invention does not need to equip with a speed limiter, can be triggered in real time automatically according to the dropping speed of the lifter, is simple, and can realize braking while the speed of the lifter is lower. The lifter provided by the invention comprises the brake device which can realize braking at a lower speed, is safe and reliable, and effectively avoids crash. 本发明公开了一种制动装置及升降机。本发明的制动装置包括楔块组件、制动组件和限速机构，限速机构包括弹性件，弹性件与制动组件连接。升降机在下降过程中加速度发生变化，弹性件会