A half-open sheet-stacked fan-shaped inner hole pressing plate device

Abstract

The invention relates to a semi-open-sheet-stacked type fan-shaped-inner-hole pressing plate device. The semi-open-sheet-stacked type fan-shaped-inner-hole pressing plate device is characterized by comprising a protective plate body, the lower portion of the protective plate body is provided with two lower movable open sheets, a lower fixed open sheet, an fan-shaped inner hole and a stretching and retracting spring hinged point, wherein the lower movable open sheets and the lower fixed open sheet form an opening angle, the fan-shaped inner hole is formed between the two lower movable open sheets, and the open sheet clamping travel is achieved. The semi-open-sheet-stacked type fan-shaped-inner-hole pressing plate device is compact in structure and ingenious in design and is a crane pincers clamping and locating protective device combined with a photoelectric proximity limiting travel switch, so that a jaw / pincers arms conduct clamping on a swelled steel coil in place, and the safety of the coil lifting operation process of a crane is improved.

Description

technical field [0001] The invention relates to a pressing plate device, in particular to a semi-open stacked fan-shaped inner hole pressing plate device, which belongs to the technical field of mechanical components. Background technique [0002] In the prior art, the product packaging of hot-dip galvanizing and hot-dip galvanizing units in iron and steel cold rolling plants includes many packaging methods. The packaging methods in the prior art use antirust paper or industrial composite film to package steel coils, and steel coils are packaged according to packaging requirements. The two sides are folded clockwise, and there is a phenomenon of paper / membrane bulging on the side of the steel coil because there is no round guard plate for packaging. However, the on-site clamping effect of the driving clamp is not good. Only through the visual judgment of the driving operator, limited by the observation line of sight, it cannot meet the clamping requirements of the clamp arm ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the product packaging of hot-dip galvanizing and hot-dip galvanizing units in iron and steel cold rolling plants includes many packaging methods. The packaging methods in the prior art use antirust paper or industrial composite film to package steel coils, and steel coils are packaged according to packaging requirements. The two sides are folded clockwise, and there is a phenomenon of paper / membrane bulging on the side of the steel coil due to the absence of a round guard plate package

However, the on-site clamping effect of the driving clamp is not good. Only through the visual judgment of the driving operator, limited by the observation line of sight, it cannot meet the clamping requirements of the clamp arm hoisting, and there is a risk of falling objects from high altitudes due to the steel coil slipping

The on-site observation concluded that the reason for the false hanging of the clamp is that the clamping condition of the driving clamp is determined by the infrared probe. When the bulge blocks the infrared light, it is considered to be in the clamping limit state where the outer edge of the steel coil contacts the inner side of the clamp arm. Tight limit (indicating yellow light) cannot accurately detect each clamping action and control the clamping force between the tong arm and the end face of the steel coil, so that the torque motor stops forward rotation after the rotor is blocked and the clamping of the steel coil is insufficient. At this time, the lifting , the contact area between the jaws and the inner diameter of the steel coil does not meet the specified safety requirements, which will easily cause the steel coil to fall during the lifting process, which will have a great impact on the lifting quality and lifting safety

Those skilled in the art are also constantly trying new solutions, but none of the technical solutions in the prior art solves the technical problem of ensuring that the steel coil packaging bulge is clamped in place

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