Stationary Crane Row Level Monitoring Device

Abstract

The invention discloses a fixed crane hanger horizontal monitoring device. The device is characterized in that a horizontal measurement and control instrument, a crane PLC system and an angle sensor are connected to form a crane hanger horizontal control closed loop, and the crane PLC system is provided with a hanger inclination automatic-adjustment program linked to the lifting and amplitude variation mechanism of a crane; the horizontal measurement and control instrument is provided with hanger deflection angle display and a hanger inclination automatic-alarm signal; and the horizontal measurement and control instrument monitors the horizontal state of a hanger through the angle sensor and outputs the hanger inclination alarm signal to the crane PLC system, and the crane PLC system starts the automatic or manual control of the horizontal state of the crane hanger according to the hanger deflection angle. Compared with devices in the prior, the device disclosed in the invention has the advantages of simple structure, low equipment maintenance cost, avoiding of the hanger unstability caused by incline, effective control of the horizontal state of the hanger, ensure of the safe lifting running, production efficiency improvement, and reduction of the working intensity of a driver.

Description

technical field [0001] The invention relates to the technical field of industrial automation control, in particular to a fixed crane hoisting level monitoring device. Background technique [0002] Stationary cranes are used for loading and unloading workpieces in ports and are important production equipment in shipyards. The structure is fixed mast type. The main mechanisms are hoisting mechanism and luffing mechanism, and each mechanism is a wire rope pulley block drive system. When this type of crane lifts workpieces, due to mechanical tolerances and cumulative errors in motor operation, the wire rope retraction and retraction speeds of the two sets of hooks are not synchronized, and it is very easy for large spreaders such as hanging rows and electromagnetic hanging beams to tilt, causing the workpiece Instability has brought certain safety hazards to the lifting operation. Therefore, when the lifting occurs in a tilted state, it is necessary to rely on the driver to obs...

AI Technical Summary

Problems solved by technology

When this type of crane lifts workpieces, due to mechanical tolerances and cumulative errors in motor operation, the wire rope retraction and retraction speeds of the two sets of hooks are not synchronized, and it is very easy for large spreaders such as hanging rows and electromagnetic hanging beams to tilt, causing the workpiece Instability, which brings a certain safety hazard to the lifting operation

Therefore, when the lifting occurs in a tilted state, it is necessary to rely on the driver to observe with the naked eye and manually adjust the balance of the spreader. Since manual observation has no quantitative data, manual adjustment has no reference coordinates, resulting in frequent safety accidents of the crane

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