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Super-lift system, engineering machinery, control method and control device for super-lift system

A control method and control device technology, applied to cranes, transportation and packaging, cargo handling equipment, etc., can solve the problems of high labor intensity, high requirements, and low degree of automation, so as to reduce labor intensity, misoperation, and dependence Effect

Active Publication Date: 2012-08-15
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing control method is complicated to operate, and has high requirements for operators and rich operating experience; the degree of automation is not high, and operators need to manually complete a series of operations in a single step, which is labor-intensive; the entire operation process is overly dependent on people. The subjective judgment of the crane is prone to misoperation; the quality of operation varies from person to person, which has a certain impact on the safe use of the crane

Method used

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  • Super-lift system, engineering machinery, control method and control device for super-lift system
  • Super-lift system, engineering machinery, control method and control device for super-lift system
  • Super-lift system, engineering machinery, control method and control device for super-lift system

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Embodiment approach

[0053] When the locking pressure reaches the first set pressure value, it is also necessary to judge whether the locking pin 53 can enter the groove of the ratchet 54 . Therefore, according to a further embodiment of the present invention, the control method may also include:

[0054] When the locking pressure reaches the first pressure setting value, detecting whether the locking pin 53 enters into the groove of the ratchet 54; and

[0055] If it is detected that the locking pin 53 enters the groove of the ratchet 54, it indicates that the locking device 50 is successfully locked; and if it is detected that the locking pin 53 does not enter the groove of the ratchet 54 , it indicates that the locking device 50 has failed to lock.

[0056] The detection of the locking pin 53 entering the groove of the ratchet 54 can also be performed by a position detection device, such as an inductive switch. When the locking pin 53 enters the groove, the inductive switch is triggered and s...

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Abstract

The invention discloses a control method for a super-lift system. The control method comprises the steps of: detecting whether a piston rod of a locking cylinder (51) retracts to a first predetermined position; if not, executing retraction operation of the locking cylinder (51) so as to enable the piston rod of the locking cylinder (51) to retract; if so, executing stretching operation of an unlocking cylinder (52) so as to enable a piston rod of the unlocking cylinder (52) to stretch out and executing rope withdrawing operation of a super-lift winch (55); and stopping the stretching operation of the unlocking cylinder (52) and the rope withdrawing operation of the super-lift winch (55) when the piston rod of the unlocking cylinder (52) stretches to a second predetermined position.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a control method and a control device for a superlift system. Background technique [0002] With the rapid development of social economy, the tonnage of crane products is getting bigger and bigger, and the lifting performance requirements are getting higher and higher. In order to fundamentally improve the lifting performance, the application of the super lifting system is becoming more and more extensive. [0003] Existing large-scale cranes usually include a main arm and a telescopic arm that can extend from the main arm. In order to make the telescopic arm crane have a larger total arm length and a higher lifting height, the arm length of the telescopic arm is becoming more and more Longer, the self-weight of the main boom and the telescopic boom is also increasing. The increase in the length and weight of the main boom and the telescopic boom will make the stress on the...

Claims

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Application Information

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IPC IPC(8): B66C13/20B66C13/16B66C23/72B66C23/82B66C23/60
CPCB66C23/72B66C13/16B66C23/82B66C13/20B66C23/821
Inventor 詹纯新刘权刘永赞郭纪梅蒋应龙陈海霞龙冶国
Owner ZOOMLION HEAVY IND CO LTD
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