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Crane, crane tower arm control method and device

A control method and crane technology, which is applied to cranes, hoisting devices, transportation and packaging, and can solve the problems of large measurement errors of angle sensors, easy shaking of tower arms, and poor control accuracy.

Active Publication Date: 2021-03-19
SANY AUTOMOBILE HOISTING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tower arm is easy to shake when it is raised or lowered, resulting in large measurement errors of the angle sensor and poor control accuracy, which affects the reliability of the crane

Method used

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  • Crane, crane tower arm control method and device
  • Crane, crane tower arm control method and device
  • Crane, crane tower arm control method and device

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0041] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention provides a crane, a crane tower arm control method and a crane tower arm control device and relates to the technical field of engineering machinery. In the crane, a telescopic coil cylinder is provided with a distance sensor used for detecting the telescopic length of the telescopic oil cylinder; meanwhile a tower arm winch is provided with a turn number detection mechanism used fordetecting the number of turns of the winch so that a controller can be used for acquiring the actual length of a main arm and the actual length of a rope unwound by the winch and obtaining the targetlength of the rope unwound by the winch by calculating the actual length of the main arm; the rope winding or rope unwinding speed of the winch is regulated according to a comparison result of the target length of the rope and the actual length of the rope so that the actual included angle between the main arm and the tower arm is kept within a preset included angle range; coordinated regulation is realized by regulating length relationship between the tower arm and the main arm; the control precision is relatively high, thus good posture of a hoisting arm in a lifting process or a descendingprocess is maintained; rollover of the crane is effectively prevented; and better reliability of the crane is realized.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a crane and a crane tower arm control method and device. Background technique [0002] Before hoisting and using the tower arm of the single-cylinder bolt-type telescopic boom crane, it is necessary to extend the main arm to make the tower arm reach a suitable height. After the hoisting is completed, the main arm and the tower arm need to be retracted. In order to prevent the crane from overturning, it is necessary to ensure that the angle between the tower arm and the main arm is within a reasonable range during the expansion and contraction of the main arm, so that the tower arm and the main arm maintain a good posture and stabilize the center of gravity of the crane. Most existing cranes are equipped with angle sensors on the tower arm to detect the angle between the tower arm and the main arm, and control it within a preset range. However, the tower arm is easy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/46B66C23/693B66D1/28B66D1/40
CPCB66C13/46B66C23/705B66D1/28B66D1/40
Inventor 李松云何伟城胡晓中
Owner SANY AUTOMOBILE HOISTING MACHINERY
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