Ship rotary crane jib laying automatic control method and control device

Abstract

The invention discloses a ship rotary crane jib laying automatic control device, which consists of a selection switch, an angle detection limit, a controller and an executing mechanism, wherein the selection switch is connected with the executing mechanism; and the input end of the controller is connected with the angle detection limit, and the output end of the controller is connected with the executing mechanism. The invention also discloses a ship rotary crane jib laying automatic control method, which comprises the steps that: A, the selection switch sends a working instruction to the executing mechanism; B, the angle detection limit measures the pitch of a jib and outputs data to the controller; C, the controllers runs a built-in program to determine the operation speed of the jib and outputs a running signal to the executing mechanism; D, the executing mechanism drives the jib to be laid according to the running signal; and E, the executing mechanism stops working according to the running signal to accomplish laying. The ship rotary crane jib laying automatic control device and the ship rotary crane jib laying automatic control method provided by the invention realize the automatic control and precise control over the whole jib laying process, so that an operation process is simplified, operation intensity is reduced and safety is improved.

Description

technical field [0001] The invention relates to a marine slewing crane, in particular to an automatic control method and a control device for shelving the boom of the marine slewing crane, and belongs to the technical field of cranes. Background technique [0002] When the existing marine slewing crane is working, the luffing steel wire rope pulls the boom to lift the heavy object. When the crane stops working, the luffing steel wire rope is loosened, and the boom is slowly lowered and placed flat on the support fixed on the hull. The existing boom laying is manually controlled. During the movement of the boom from the pulled up state to the flat laying state, the crane driver constantly adjusts the pulling force of the luffing wire rope according to the movement state of the boom to keep the boom slow and The operation process is complicated and the operation intensity is very high, especially when the driver is fatigued due to long-term operation, the accuracy of the opera...

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to overcome the imprecise operation control of the boom, poor safety, complex operation process, high operation intensity, and the preloading and shelving process of the boom existing in the existing control method for the boom of the marine slewing crane. Due to the inability to accurately control the pre-tightening tension value of the luffing steel wire rope, the pre-tightening of the boom can not reach the ideal state, and an automatic control method for the laying of the boom of the marine slewing crane is provided to realize the slow, uniform and stable movement of the boom. Shelving, effectively avoiding the adverse effects of the dynamic load and impact load on the boom structure during the boom shelving process, realizing precise control of the boom pre-tightening and shelving, ensuring that the pre-tightening and shelving boom is in the most ideal stress state , and simplify the operation process of the boom shelving, reduce the operation intensity and improve the operation safety

[0005] The second object of the present invention is to overcome the technical problems of complex operation process, high operating intensity and poor safety in existing marine slewing crane arm shelving, and to provide an automatic control device for marine slewing crane arm shelving, which realizes The automatic control of the whole process of shelving the boom simplifies the operation process, reduces the operation intensity and improves the operation safety

Images