Method and system for engineering machinery control and excavator

A technology of construction machinery and control methods, which is applied in the field of rotating machinery, and can solve the problems that electric rotating devices cannot stay on slopes, etc.

Active Publication Date: 2014-12-10
SHANGHAI HUAXING DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem that the current electric rotary device cannot stay on the slope, a control method and construction machinery for the electric rotary device to stay on the slope are now provided.

Method used

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  • Method and system for engineering machinery control and excavator
  • Method and system for engineering machinery control and excavator
  • Method and system for engineering machinery control and excavator

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] An embodiment of the present invention provides a control method for construction machinery. The construction machinery includes an electric rotary working device and a rotary motor driving the electric rotary working device, including the following steps,

[0045] S1: collect the operating quantity of the construction machinery operating device and generate a corresponding target mechanical speed signal;

[0046]S2: Collect the current mechanical speed signal of the electric rotary working device from the rotary motor and calculate the electromagnetic slip value that needs to reach the target mechanical speed value, calculate the current mechanical speed value according to the current mechanical speed signal, and combine the obt...

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Abstract

The invention discloses a method and a system for engineering machinery control and an excavator and belongs to the technical field of rotating machinery. The method includes the following steps: collecting operation quantity of an engineering machinery operation device and generating corresponding target machinery rotating speed signals, generating target electromagnetic rotating speed signals, judging load torque direction of a motor-driven rotating working device according to target machinery rotating speed signals, judging whether the operation quantity is lower than preset operation quantity, generating first judgment signals on yes judgment, calculating target electromagnetic rotating speed value, judging whether target electromagnetic rotating speed value is lower than preset electromagnetic rotating speed value and generating second judgment signals on yes judgment. By means of the method, the system and the excavator, expected machinery rotating speed is generated through operation quantity of an operation body and is compared with current electromagnetic rotating speed to judge whether change of the control method can be conducted, new electromagnetic rotating speed is output to enable electromagnetic torque generated by the electromagnetic rotating speed to overcome load torque and enable the motor-driven rotating device to be capable of parking on a slope.

Description

technical field [0001] The invention relates to the technical field of rotating machinery, in particular to an engineering machinery control method, system and excavator. Background technique [0002] With the development of hybrid power devices operated by hydraulically driven working devices or traveling devices, hybrid construction machinery driven by electric motors to rotate the upper platform has been more and more widely used, such as excavators and rotary drilling rigs. [0003] In the electric rotation operation, since the rotation of the upper platform is driven by electric power, even when the upper platform is rotated at the same time as the hydraulically driven working device, the rotation of the upper platform will not be affected by the operation of other working devices. During operation, the electric drive can recover the potential energy of the upper platform rotation as the energy source for the next drive. Therefore, compared with hydraulically driving t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/20E02F9/22
Inventor 杨国勋刘华胜董希文
Owner SHANGHAI HUAXING DIGITAL TECH
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