Height-adjustable safety guardrail device

Abstract

The invention provides a height-adjustable safety guardrail device. A protective guardrail and a guardrail height locking mechanism are arranged between adjacent fixed columns. The protective guardrail comprises a fixed guardrail and a movable guardrail, wherein the movable guardrail comprises a movable guardrail upper gear, a middle cross rod and a plurality of connecting rods; and the middle cross rod is located between the movable guardrail upper gear and the fixed guardrail, and the plurality of parallel connecting rods are correspondingly arranged between the movable guardrail upper gearand the middle cross rod, and the fixed guardrail and the middle cross rod in hinged modes. The height of the movable guardrail can be adjusted according to needs, so that it is convenient to effectively avoid the limb operation state without the guardrail and reduce the safety risk of the limb operation when operations such as soil fetching and soil digging are carried out at the edge of a foundation pit or a trestle. In addition, according to the device, through additionally arranging the middle cross rod, the connecting rods are obviously shortened, the movable guardrail can be folded without the help of the lateral space at the two ends of the movable guardrail, and the strength of the movable guardrail can be improved, so that the height of the movable guardrail is increased.

Description

technical field [0001] The invention relates to the field of safety protection, in particular to a height-adjustable safety guardrail device. Background technique [0002] The protective railings on the edge of the foundation pit at the construction site are generally erected with steel pipe fasteners, and those with higher civilized construction standards adopt stereotyped products. The height of the railings is about 1.2m-1.8m. use. [0003] However, when there are soil fetching and digging operations on the side of the foundation pit or on the trestle bridge, the height of the fixed-height railings will hinder the normal use of mechanical equipment, often resulting in the removal of the installed railings, resulting in the lack of protective measures for this part , The risk of high-altitude border security has greatly increased. According to incomplete statistics, safety accidents caused by high-altitude edge accounted for more than 50% of the national construction saf...

AI Technical Summary

Problems solved by technology

[0003] However, when there are soil fetching and digging operations on the side of the foundation pit or on the trestle bridge, the height of the fixed-height railings will hinder the normal use of mechanical equipment, often resulting in the removal of the installed railings, resulting in the lack of protective measures for this part , high-altitude border security risks are greatly increased

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