Measurement method and system for determining position of crane hook

Abstract

The invention discloses a measurement method for determining a position of a crane hook, which comprises the following steps of: 1, during the filling, ensuring that a folding cylinder only takes a working condition, locking a piston rod of the folding cylinder firmly after extending to the farthest place, finally enabling a folding arm, the folding cylinder and a telescopic arm to form a rigid body; 2, establishing a sphere coordinate system with a hinge point center of the folding arm and a rotary table as a coordinate origin O, wherein the connecting line of the coordinate origin O and thecenter point C of a fixed pulley of the crane hook is a coordinate radius phi, and regulating the telescopic direction of the telescopic arm to ensure that the telescopic arm is parallel to the coordinate radius phi, wherein the state is an initial zero state of an ejector arm of the crane; and 3, during the work, always ensuring that the telescopic direction of the telescopic arm is parallel to the coordinate radius phi, measuring the length variable value delta L of the telescopic arm, the length variable value delta h of a steel rope, the amplitude angle variable value delta alpha of the folding arm and the rotary angle theta of the rotary table by using a sensor to obtain the position of the crane hook. The invention reduces the parameters required for determining the position.

Description

technical field [0001] The invention belongs to a measuring method, in particular to a method for measuring the position of a crane hook, and to a measuring system used to implement the measuring method. Background technique [0002] In the existing loading cranes, mechanized loading can only be realized by manual operation, and automatic loading of hoisted loads cannot be realized, and the loading speed is seriously affected. [0003] Therefore, accurately determining the position of the lifting load is the key to realizing fully automatic loading and unloading. However, in the existing precise measurement, it is often necessary to measure a large number of parameters. like figure 1 As shown, the boom of a crane generally includes a slewing table, a folding arm and a telescopic arm. Therefore, in the implementation of accurate measurement of the position of the hook, the parameters generally required include: ① the working range R of the boom; ② the height of the hook, t...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the complexity of the system caused by the need to measure a large number of parameters when determining the position of the crane hook. It provides a measurement method for determining the position of the crane hook with fewer measurement parameters and high measurement accuracy, and provides a method for implementing the method. The measurement system involved in the method

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