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Method, device and crane for recording boom telescoping under load

A boom and on-load technology, applied in the field of recording boom on-load telescopic, can solve problems such as affecting the effectiveness of on-load recording, submerging on-load telescopic information, interference, etc.

Active Publication Date: 2017-01-11
河北雷萨重型工程机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the wrong recording of these invalid information will interfere or even overwhelm the required on-load expansion and contraction information, affecting the effectiveness of on-load recording

Method used

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  • Method, device and crane for recording boom telescoping under load
  • Method, device and crane for recording boom telescoping under load

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] The present invention provides a method for recording the telescoping of the boom with load, which may include: if the rated lifting capacity is greater than the first weight threshold, the ratio of the lifting load to the rated lifting capacity is greater than a preset coefficient and the telescopic length of the boom is greater than the length threshold, then record the telescopic length of the boom as the load telescopic; If it is greater than the length threshold, record the telescopic length of the boom as on-load telescopic.

[0022] figure 1 It is a flow chart of recording the expansion and contraction of the boom with load according to an embodi...

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Abstract

The invention discloses a method and a device for recording suspension arm belt loading extension and a crane. The method can comprise the following steps: if the rated lifting capacity is greater than a first weight threshold, the ratio of the suspension loading weight to the rated lifting capacity is greater than a preset coefficient, and the suspension arm extension length is greater than a length threshold, the suspension arm extension length is recorded as belt loading extension; and if the rated lifting capacity is smaller than the first weight threshold, the suspension loading weight is greater than a second weight threshold, and the suspension arm extension length is greater than the length threshold, the suspension arm extension length is recorded as the belt loading extension. The method can effectively prevent the wrong record of the suspension arm belt loading extension, and can be suitable for cranes with various model numbers.

Description

technical field [0001] The present invention relates to the field of engineering machinery, in particular to a method and a device for recording telescopic arm telescopic expansion and contraction in telescopic boom cranes. Background technique [0002] The booms of the telescopic boom cranes currently on the market are mostly not allowed to be telescopic with load. On-load telescoping has a great impact on the service life of the steel wire rope in the boom. In particular, the on-load telescoping of the boom may cause deformation of the oil cylinder, which may cause the crane to fail to work normally or cause serious safety accidents. [0003] In order to prohibit operators from carrying out on-load telescoping, most manufacturers use warning signs on the crane manual or on the body to indicate that on-load telescoping is strictly prohibited. This method, which only relies on the operator's conscious compliance, has limited effect. Some manufacturers have installed a teles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/16
CPCB66C13/16
Inventor 王景双王雪婷
Owner 河北雷萨重型工程机械有限责任公司
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