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Lift type safety guardrail device

A safety guardrail and lifting technology, which is applied in the erection/assembly of bridges, excavation, construction, etc., can solve the problems of increased safety risks at high altitudes, obstacles to the normal use of mechanical equipment, and lack of protective measures, so as to avoid the state of edge operations , safe return to normal height, and the effect of reducing safety risks

Inactive Publication Date: 2020-04-03
SHANGHAI NO 4 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Lift type safety guardrail device
  • Lift type safety guardrail device
  • Lift type safety guardrail device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0050] see Figure 6 to Figure 9 , the difference between this embodiment and Embodiment 1 is:

[0051] The height locking mechanism of the guardrail includes a screw mandrel 44, a nut 42 and an anti-rotation block 45. A vertical chute 11 is provided on the fixed column, and a horizontal chute 311 is provided on the upper rail 31 of the movable guardrail. The screw mandrel 44 One end of the screw rod 44 is fixedly connected with the anti-rotation block 45, and the other end of the screw rod 44 passes through the vertical chute 11 of the fixed column 1 and the horizontal chute 311 of the upper file 31 of the movable guardrail, and then is fixed by the nut 42. , the anti-rotation block 45 is located inside the fixed column 1 , and the fixed column 1 can limit the rotation of the anti-rotation block 45 around the axis of the screw rod 44 inside the fixed column 1 .

[0052] The anti-rotation block, on the one hand, can be used as a limiting device to prevent the screw rod 44 fro...

Embodiment 3

[0057] see Figure 10 , the difference between this embodiment and Embodiment 1 is:

[0058] Described movable guardrail 3 comprises movable guardrail upper gear 31, middle cross bar 34 and several connecting rods 32, and described middle cross bar 34 is positioned between described movable guardrail upper gear 31 and fixed guardrail 2, and described movable guardrail upper gear 31 Between the middle cross bar 34 and between the fixed guardrail 2 and the middle cross bar 34, a number of parallel connecting rods 32 are respectively arranged in a hinged manner, and the upper and lower adjacent connecting rods 32 are hinged at the same place of the middle cross bar 34. Adjacent connecting rods 32 form an isosceles triangle with the plumb line or are collinear with the plumb line.

[0059] In this embodiment, the connecting rod 32 between the upper rail 31 of the movable guardrail and the fixed guardrail 2 is divided by the middle cross bar 34, so that the connecting rod 32 is si...

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Abstract

The invention provides a lift type safety guardrail device which adopts protective guardrails arranged between adjacent fixed upright posts and guardrail height locking mechanisms. The protective guardrails include a fixed guardrail and a movable guardrail, the movable guardrail is arranged above the fixed guardrail, and the height of the movable guardrail can be adjusted according to requirements. When operations such as soil taking, soil digging and the like are carried out beside a foundation pit and on a trestle, it is unnecessary to detach an installed guardrail device in order to providean operation space for normal use of mechanical equipment, and only the operations of lowering the movable guardrail to the required height and locking the movable guardrail on the fixed upright posts through the guardrail height locking mechanisms are needed. In the operation process of the mechanical equipment, the lowered movable guardrail can still keep the function of the guardrail. After the operation of the mechanical equipment is finished, the normal height of the movable guardrail can be quickly, conveniently and safely recovered, so that the guardrail-free bordering operation stateis effectively avoided, and the safety risk of bordering operation is reduced.

Description

technical field [0001] The invention relates to the field of safety protection, in particular to a liftable 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 safety accid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/32E02D17/02E01D21/00
CPCE04G21/32E04G21/3204E02D17/02E01D21/00
Inventor 马晓辉匙文成陈一琼王一凡俞文俊蔡杰殷凯
Owner SHANGHAI NO 4 CONSTR
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