Safety passenger elevator

Abstract

The invention discloses a safety passenger elevator which is characterized in that hydraulic asymmetric safety tongs are arranged on the two sides of an elevator car in the position corresponding to elevator guide tracks. The hydraulic asymmetric safety tongs of the safety passenger elevator disclosed by the invention utilize a hydraulic principle, and when emergency brake is performed on the elevator car, the clamping force is increased smoothly, so that the comfort of passengers in the car during the emergency brake of the elevator can be increased. Furthermore, when a vertical sliding wedge block of the safety passenger elevator disclosed by the invention is lifted upwards, a horizontal sliding block translates outwards, and a hydraulic rod on the side is compressed; and as the total oil amount in a hydraulic box is constant, a hydraulic rod on the other side extends outwards, the position of a horizontal sliding wedge block is adjusted during the process, then the two sides of the elevator guide tracks are subject to the same stress, the transverse deviation of the elevator car can be avoided, and the damages to an elevator guide shoe can also be avoided.

Description

technical field [0001] The invention relates to a safe passenger elevator, which belongs to the technical field of elevator control. Background technique [0002] At present, in the process of using the elevator, the accidents with the highest occurrence rate are mistakenly opening the door and stalling and falling down. When the elevator is in an abnormal state of fast falling, when the falling speed reaches the action speed set by the speed limiter, the speed limiter will be triggered immediately, and the speed limiter will pull the tapered wedge of the progressive safety gear to make the two sides of the guide rail The wedges tighten the rails for braking. Divide existing progressive safety gear symmetrical type and asymmetrical type two kinds of structures. Symmetrical safety gear is usually symmetrically arranged with two conical wedges that are pulled at the same time to achieve braking. This structure is relatively bulky and is not conducive to installation; and sym...

AI Technical Summary

Problems solved by technology

However, in this structure, the wedge in the U-shaped leaf spring is pulled upward to expand the U-shaped leaf spring, so it will be clamped with the guide groove structure, and then harsh noises will be generated during braking, which will easily cause the car panic among passengers

Moreover, the braking of this asymmetrical safety gear is relatively blunt. Although it is more stable than ordinary safety gear, it still does not meet the very smooth requirements.

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