Safety protection device with high protective property and used for unattended crown block

Abstract

The invention discloses a safety protection device with high protective property and used for an unattended crown block. The safety protection device comprises a cross beam and guardrails, wherein theguardrails are fixed at the upper end of the cross beam through a plurality of support rods; the support rods are uniformly connected and fixed between the cross beam and the guardrails; a pluralityof U-shaped steel are fixed on the front and rear sides of the upper end of the cross beam, are positioned between the guardrails on the front and rear sides, and are uniformly distributed in the transverse direction; and dowels are fixed on the surfaces of the outer sides among the U-shaped steel. According to the safety protection device, a plurality of U-shaped steel are connected and fixed between the front and rear sides of the upper end of the cross beam, and a plurality of dowels are welded and fixed on the surfaces of the outer sides among the U-shaped steel, so that the U-shaped steeland the dowels are fixed on the inner sides of the guardrails at the upper end of the cross beam even if a steel wire rope breaks when a crane is used for better protecting a person in the crane, andhigher protective property is realized.

Description

technical field [0001] The invention relates to the technical field of guardrails for cranes, in particular to a safety protection device for unattended cranes with high protection performance. Background technique [0002] At present, a crane refers to a multi-action hoisting machine that vertically lifts and horizontally transports heavy objects within a certain range. The unattended crane is a crane that does not need to be operated by humans. It only needs staff to patrol the upper end of the beam. Generally, a protective fence is fixed on the upper end of the beam to protect the staff patrolling on the upper end. . [0003] Because the cranes use steel ropes to connect the lifting hooks, the steel ropes will bear a large tension during lifting, and sometimes even break. It will be thrown directly to the upper end of the horizontal frame, causing injury to the petitioning staff. The traditional guardrail only has the function of preventing the personnel from falling, a...

AI Technical Summary

Problems solved by technology

[0003] Because the cranes use steel ropes to connect the lifting hooks, the steel ropes will bear a large tension during lifting, and sometimes even break. It will be thrown directly to the upper end of the horizontal frame, causing injury to the petitioning staff. The traditional guardrail only has the function of preventing people from falling, and cannot provide more protection for them

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