Hybrid power apparatus of slewing mechanism of tyre jib crane

Abstract

The invention relates to a hybrid power apparatus of a slewing mechanism of a tyre jib crane. The hybrid power apparatus comprises a machinery mechanism and a control circuit, wherein the machinery mechanism comprises three mechanisms of a lifting mechanism, a luffing mechanism and a slewing mechanism, and the control circuit comprises a main controller, a charging / discharging switching circuit, a segment charging control circuit and a power consumption / generation switching circuit that are successively connected, and a super capacitor bank and a mixed power supply control circuit that are connected with the charging / discharging switching circuit. Under effects of the control circuit, potential energy of the lifting mechanism or the luffing mechanism is recovered and stored in the super capacitor bank as auxiliary energy of power supply to drive the slewing mechanism of the tyre jib crane. The invention can not only avoid harmful impact of feedback energy generated when braking on a crane system to improve stationarity of the crane system, but also recover energy effectively to avoid waste and reduce environmental pollution. The hybrid power apparatus has high security, strong practicality and is easy for popularization and application.

Description

technical field [0001] The invention belongs to tire jib cranes, in particular to a tire jib crane whose slewing mechanism is powered by a hybrid power device. Background technique [0002] Because of its maneuverability, tire jib crane is the most commonly used loading and unloading machinery in port terminals. At present, when the working conditions limit the external three-phase power supply, the power source of the tire crane is mostly provided by the internal combustion-generator set or the three-phase power supply to drive the motors of each mechanism to perform operations. Its working characteristics are cycle, repetition, Intermittent operation, frequent lifting and moving of several tons to dozens of tons of goods. Sometimes each mechanism is required to complete starting and braking in just a few seconds, which requires a lot of power, that is to say, it needs to be equipped with a high-power generator, so that the volume of the internal combustion-generator set i...

AI Technical Summary

Problems solved by technology

At present, there is an attempt to connect the supercapacitor that recovers potential energy in parallel to the DC bus of the power mechanism of the tire jib crane as the total power auxiliary source, which requires a large capacity and high cost of the supercapacitor, and the recovered potential energy cannot satisfy the large energy Consumption requirements

The use of all power sources is very frequent, which affects the effective establishment of the supercapacitor charging process, and the use of generator sets to charge the supercapacitor also violates the original intention of energy recovery and utilization, and the working conditions of the bus are very complicated, and the interference of various institutions on the bus is superimposed , which also makes the recovery of potential energy less effective

[0004] Therefore, a device with simple structure, good performance, low cost and stable operation to solve the problems of environmental pollution and energy waste, and to reduce the damage to the crane during frequent starting and braking operations has become an urgent problem to be solved

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