Bidirectional pulling safety tongs convenient to use

Abstract

The invention discloses bidirectional pulling safety tongs convenient to use. The bidirectional pulling safety tongs comprise an upper supporting plate, upper brake wedge blocks, an upper wear resisting block, a safety tong body and a brake mechanism arranged on the lower side of the safety tong body. A rolling mechanism is arranged on the upper side of the upper brake wedge block and comprises aU-shaped block, a bearing, a groove, a connecting rod rotary shaft, a fixed protrusion and a clamping groove. The upper supporting plate is mounted and fixed on the upper side of the safety tong body,and the upper brake wedge blocks are symmetrically mounted and placed in the upper supporting plate. The connecting rod rotary shaft rotates in the bearing, friction force on the joint of the connecting rod rotary shaft and a brake rod is reduced, the surface of the connecting rod rotary shaft is prevented from being abraded and damaged, the service life of the connecting rod rotary shaft is prolonged, and the demounting and overhauling period of the connecting rod rotary shaft is prolonged. The bearing is clamped and fixed into a groove through the fixed protrusion and the clamping groove, the bearing can be mounted and fixed into the U-shaped block conveniently, and later demounting and replacing of the bearing are convenient.

Description

technical field [0001] The invention belongs to the technical field of safety gear, and in particular relates to an easy-to-use bidirectional lifting safety gear. Background technique [0002] The safety gear is the safety protection device of the elevator. The elevator safety gear device is controlled by the speed limiter. When the elevator speed exceeds the limit speed set by the elevator speed limiter, or when the suspension rope breaks and relaxes, It is a safety device that the car stops in an emergency and is clamped on the guide rail. It provides effective protection for the safe operation of the elevator. It is generally installed on the car frame or the counterweight frame. [0003] When the existing safety gear is in use, friction is generated at the connection between the connecting rod shaft and the brake lever, which causes the surface of the connecting rod shaft to wear easily, reduces the service life of the connecting rod shaft, and reduces the periodic maint...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an easy-to-use two-way lifting safety tongs to solve the problem that the existing safety tongs proposed in the background technology mentioned above are caused by friction when the connection between the connecting rod shaft and the brake lever is pulled. The surface of the connecting rod shaft is easy to wear, which reduces the service life of the connecting rod shaft and reduces the period of regular maintenance of the elevator

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