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Method and device for controlling the telescopic extension of a crane boom

A crane and jib technology, applied in the field of heavy industry control, can solve problems such as oil cylinder deformation, misoperation cannot be completely avoided, and moment limiter loses its protective meaning

Active Publication Date: 2021-01-15
HUNAN ZOOMLION INTELLIGENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the telescopic operation with load, the larger bearing capacity of the telescopic oil cylinder will easily cause the deformation of the oil cylinder, and there is a hidden danger of major safety accidents
It does not have the function of automatically controlling the telescoping of the boom with load, and only prohibiting the telescoping of the boom with load through warning signs cannot completely avoid the occurrence of misoperation, and the moment limiter loses its protective meaning

Method used

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  • Method and device for controlling the telescopic extension of a crane boom
  • Method and device for controlling the telescopic extension of a crane boom
  • Method and device for controlling the telescopic extension of a crane boom

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Embodiment Construction

[0028] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0029] figure 1 It is a flowchart of a method for controlling the expansion and contraction of a boom of a crane according to an embodiment of the present invention. The method includes the following steps:

[0030] Step S110, determining the current working condition of the crane according to working condition parameters. The operating condition parameters of the crane can be input by the operator into the torque limiter, or stored in the torque limiter and read by the torque limiter.

[0031] Steps S120-S130, according to the current working conditions, determine whether to a...

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Abstract

The invention relates to the field of heavy industry control, in particular to a method and a device for controlling the expansion and contraction of a boom of a crane. The method includes: determining the current working condition of the crane according to working condition parameters; determining whether to allow the telescopic operation of the boom according to the current working condition; if the telescopic operation of the boom is not allowed, sending a first an electrical signal to cut off the telescopic drive of the boom; and if the telescopic operation of the boom is permitted, sending a second electrical signal to enable the telescopic drive of the boom to be performed. The method and device can automatically limit the telescopic movement of the boom according to the working conditions of the crane, thereby preventing the telescopic movement of the boom with overload.

Description

technical field [0001] The invention relates to the field of heavy industry control, in particular to a method and a device for controlling the expansion and contraction of a boom of a crane. Background technique [0002] The crane moment limiter is a real-time lifting moment safety detection device, which can check the crane's arm length, angle, amplitude, hoisting weight, moment percentage and other parameters in real time, and can query the working record and overload record of the moment limiter. In addition, the moment limiter also has the function of controlling the operation of the crane in dangerous conditions, such as cutting off the operation of the crane in a dangerous direction when overloaded. [0003] The telescopic cylinder is a key component of the crane. The expansion and contraction of the boom is realized through the telescopic cylinder. If the vertical gravity of the telescopic cylinder is greater than the bearing capacity of the telescopic cylinder, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/693B66C23/82B66C23/88B66C13/16B66C13/22
CPCB66C13/16B66C13/22B66C23/705B66C23/82B66C23/88
Inventor 郭启训张贤辉杨凯陈文袁海
Owner HUNAN ZOOMLION INTELLIGENT TECH
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