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Method and device for controlling telescopic speed of single-cylinder bolt-type telescopic boom and crane

A single-cylinder bolt type, telescopic speed technology, applied in the direction of transportation and packaging, load hanging components, etc., can solve the problem of unstable telescopic boom telescopic speed and achieve the effect of improving stability

Active Publication Date: 2018-03-16
XUZHOU HEAVY MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the embodiments of the present invention is to solve the problem of unstable expansion and contraction speed of the telescopic arm during the expansion and contraction process

Method used

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  • Method and device for controlling telescopic speed of single-cylinder bolt-type telescopic boom and crane
  • Method and device for controlling telescopic speed of single-cylinder bolt-type telescopic boom and crane
  • Method and device for controlling telescopic speed of single-cylinder bolt-type telescopic boom and crane

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] The relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0028] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0029] Techniques, methods and devic...

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PUM

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Abstract

The invention discloses a method and device for controlling the telescopic speed of a single-cylinder plug-type telescopic arm and a crane, and relates to the field of engineering machinery. The method includes: obtaining the telescopic length of the telescopic arm when it is automatically telescopic; The current telescopic speed of the telescopic arm; determine whether the current telescopic speed is consistent with the preset telescopic speed; if the current telescopic speed is inconsistent with the preset telescopic speed, adjust the variable pump control current until the current telescopic speed is consistent with the preset telescopic speed. The embodiment of the present invention overcomes the disadvantage of unstable expansion and contraction speed of the telescopic arm, and improves the safety and stability during the expansion and contraction of the telescopic arm.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a method and device for controlling the telescopic speed of a single-cylinder bolt-type telescopic arm and a crane. Background technique [0002] At present, single-cylinder pin cranes basically have the function of automatic expansion and contraction, and the expansion and contraction speed depends on the control current of the variable valve. In the prior art, when controlling the expansion and contraction of the telescopic arm, generally a fixed control current value is manually set so that the telescopic arm has a certain telescopic speed. However, the determination of the fixed control current value above depends on the experience of the designer. If it is set too large, it will affect the safety of the automatic telescopic arm telescopic process; if it is set too small, the telescopic speed will be too slow, thereby affecting the telescopic efficiency. [0003] In prac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/48
Inventor 张鑫赵玉春周化龙李怀洋刘思佳赵裕聪
Owner XUZHOU HEAVY MASCH CO LTD