Novel elevator falling prevention device

Abstract

The invention discloses a novel elevator falling prevention device. The novel elevator falling prevention device is connected with an elevator lifting rod; a support is arranged at the bottom of a cage; the sides of the supports are provided with a left brake arm, a right brake arm and a connecting rod; the two brake arms are symmetrically arranged on two sides of a T-shaped guide rail; the outer ends of the brake arms are provided with chutes which are movably pivoted with fixed pin rolls on the support; the inner ends of the brake arms are friction ends having certain gaps with the two sides of the T-shaped guide rail; the middles of the brake arms are connected with the connecting rod through transmission pin rolls; and two ends of the connecting rod are symmetrically pivoted with left and right brake arms. The novel elevator falling prevention device has constant brake deceleration, can ensure riding comfortableness and safety, simplifies elevator design requirements, has a simple and compact structure, greatly simplifies the conventional structural form of combining clamping springs with brake blocks / guide sliders, saves manufacturing working hour cost, contributes to energy conservation and environmental friendliness, and improves working reliability of products.

Description

technical field [0001] The invention relates to the field of elevator equipment, in particular to a novel elevator anti-falling device. Background technique [0002] In this article, "car" refers to a space structure in elevator equipment that carries passengers and goods. Elevator "load" refers to the weight of passengers and goods carried in the car. The "total load" of the elevator refers to the sum of the car's own weight and its load. Unless otherwise emphasized in this article, the term "car" often refers to the entire car including the load. [0003] The clamping force of the safety gear refers to the force that the safety gear clamps the guide rail when braking, which is a positive pressure on the surface of the guide rail. When the safety gear is braking, the positive pressure produces frictional force, which plays a braking role, which is called the braking force of the safety gear. When talking about the performance of safety gear, the concept of braking force...

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Problems solved by technology

[0008] Secondly, the springs used in the existing safety tongs involve various types (such as disc springs, coil springs, U-shaped springs, leaf springs, etc.), which lead to diversified structural types of safety tongs, which is not conducive to large-scale production. Not to mention generalization and serialization

The larger the tonnage and the higher the speed of the elevator, the larger the size of the safety gear, and the spring occupies a large proportion, and the manufacturing technical difficulty and cost of the large-size spring are made by the large-tonnage, high-speed safety gear. bottleneck

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