Crane as well as operation safety control system and method thereof

Abstract

The invention discloses an operation safety control system of a crane; the control system comprises a power supply, a get-off control unit and a get-on control unit; the power supply is connected with a power supply input end of an engine electronic control unit by a first power supply circuit, and is connected with a flameout signal input end and a get-on controller of the engine electronic control unit by a second power supply circuit; and the get-on control unit comprises a scram switch and a scram control device. The scram control device controls the on-off of the first and the second power supply circuits according to a scram gear or a restore gear on which the scram switch is located. Therefore, when an emergency situation happens in the get-on operation process of the crane, an operator can cut off the power supply of the engine ECU (electronic control unit) by using the scram control device, to enable the engine to be flamed-out, thereby effectively and completely cutting off the power system in time, and ensuring the safety of people, apparatuses and surrounding operation environments. On the above basis, the invention further provides an operation safety control method of the crane and the crane having the above control system.

Description

technical field [0001] The invention relates to an overweight machine, in particular to a crane and its operation safety control system and method. Background technique [0002] Cranes can generally be divided into two parts according to their functions: the driving part for getting off the car and the part for getting on the car. The part of getting off the car is mainly used to realize the site transfer of the crane, and the part of getting on the car is mainly used to realize the lifting, positioning and placement of heavy objects. For truck cranes, two cabs, the disembarking cab and the boarding cab, are designed to operate the dismounting driving part and the boarding operation part respectively. [0003] As we all know, for small and medium tonnage crane products, the driving part when getting off the car and the part that is getting on the car share a set of power system (engine). The engine is controlled by the electronic control unit ECU. The ECU continuously dete...

AI Technical Summary

Problems solved by technology

[0011] However, since the flameout signal required by the engine ECU is active at a high level, if there is any component failure or circuit break between the battery G1 and the flameout terminal of the engine ECU, the engine ECU will not be able to receive the flameout signal. Unable to control the engine flameout immediately, the reliability of the emergency flameout operation is poor, and it does not meet the control requirements for immediate shutdown in an emergency state

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