System and method for detecting open angle of super-lift device

Abstract

The invention relates to a system and a method for detecting an open angle of a super-lift device. The system comprises two groups of detector switch mounting brackets, two groups of access switches and two groups of detection blocks, wherein the two groups of detector switch mounting brackets are respectively fixedly mounted on a left-rotation support seat and a right-rotation support seat of the super-lift device; the two groups of access switches are respectively fixedly mounted on the two groups of detector switch mounting brackets, and each group of access switches comprises a plurality of access switches; the two groups of detection blocks are respectively fixedly mounted at one ends, close to a rotating shaft, of a left-rotation arm rest and a right-rotation arm rest of the super-lift device, each group of detection blocks comprises a plurality of detection blocks which are arranged in a manner of respectively rotating by multiple different preset angles based on the axis center of the rotating shaft and respectively correspond to the access switches. Due to the cooperation between the detection blocks and the access switches with the corresponding angles, the angle is prevented from being measured by the rotation of the rotating shaft of an angle encoder, so that the accurate measurement of the open angle of the super-lift device cannot be influenced by both movement intervals and vibration problems of a mechanism, and requirements on accurately measuring several specific angles in a working condition can be met.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a system and method for detecting the opening angle of a super-lifting device. Background technique [0002] In large-tonnage all-terrain cranes, arm length and lifting performance are a pair of contradictory issues. The longer the arm length, the lower the lifting performance. In the combination of long arms, although the height can meet the requirements, it also leads to limited lifting capacity, which cannot meet the use requirements, and cannot reflect the performance advantages of large-tonnage cranes. [0003] The super-lifting device is a device arranged on the front upper part of the basic boom, which is used to improve the force condition of the boom and improve the lifting performance of the crane. After the super-lifting device is added to the large-tonnage all-terrain crane, the lifting performance can be greatly improved, and it has gradually become the standard...

AI Technical Summary

Problems solved by technology

When the super-lifting device is working, if the opening angles of the rotating arms on both sides are not detected accurately, it will lead to asymmetric opening of the super-lifting rotating arms, uneven force, and even dangerous accidents, resulting in casualties

[0006] At present, the generally used angle detection method is to install an angle encoder on the rotating shaft of the rotating support and the rotating arm frame to detect the angle. The detection range of the detection device is fully covered, but it is opposite to the rotating support The concentricity during the movement has always been difficult to guarantee, often due to the movement gap of the mechanism, vibration and other factors, the rotation shaft of the angle encoder is subjected to lateral force, twisting and deforming, which affects the angle detection accuracy and reduces the service life of the angle encoder

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