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Rotating control method of crane, rotating control system and crane

A control method and control system technology, applied in the field of construction machinery, can solve problems such as boom damage, reduce the possibility of damage, and improve safety performance

Active Publication Date: 2013-09-18
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a crane slew control method, slew control system and crane to solve the problem in the prior art that depending on the operator's experience to artificially adjust the slewing speed may cause damage to the boom

Method used

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  • Rotating control method of crane, rotating control system and crane
  • Rotating control method of crane, rotating control system and crane
  • Rotating control method of crane, rotating control system and crane

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] An embodiment of the present invention provides a slewing control system for a crane, figure 2 is a schematic diagram of the slewing control system of the crane according to the embodiment of the present invention, such as figure 2 As shown, the slewing control system includes: working condition obtaining device 41, used to obtain the current load information and arm length of the crane; operating handle 11, used to receive the user's operation instruction, and generate the opening degree for the operation instruction; control components 21, respectively connected to the operating condition acquisition device 41 and the operating handle 11, used to search the current adjustment coeffi...

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Abstract

The invention discloses a rotating control method of a crane, a rotating control system and the crane. The rotating control method of the crane comprises the following steps of: obtaining the current working condition parameters of the crane; finding current regulation coefficients corresponding to the current working condition parameters in a preset mapping table; obtaining a current value of a proportional electromagnetic valve corresponding to an opening degree of an operating handle; performing compensation calculation on the current value of the proportional electromagnetic valve according to the current regulation coefficients so as to obtain a control current compensation value; and outputting control current to a rotating actuation mechanism with the control current compensation value. Through the application of the technical scheme, a control component utilizes preset mapping relationship to obtain the corresponding current regulation coefficients at working state according to the current working state signal of the crane, and corresponding adjustment is performed on the current of the proportional electromagnetic valve so as to ensure that the rotating speed of the crane cannot exceed the maximum rotating speed limit value at the current working state, so that the possibility that a lazy arm is damaged is reduced, and the safety performance of the crane is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane slew control method, a slew control system and the crane. Background technique [0002] When the crane performs the slewing action, the operator generally controls the slewing mechanism through the slewing handle. figure 1 It is a schematic diagram of the slewing control system of the crane in the prior art. The rotation direction of the slewing handle 10 controls the slewing direction, and the opening of the handle 10 controls the size of the slewing control signal. The slewing control signal is processed by the control unit 20 and converted into a control actuator. 30 drive signal. Common actuators are hydraulic mechanisms, generally including hydraulic pumps, slewing motors, slewing reducers, slewing supports, etc. The slewing speed of the slewing structure is determined by the displacement of the hydraulic pump, and the displacement of the hydraulic pump is dete...

Claims

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Application Information

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IPC IPC(8): B66C13/20B66C13/16B66C23/86
Inventor 汤小君高一平吕舷彭刚毅滕宏珍
Owner ZOOMLION HEAVY IND CO LTD
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