What effect does air entering the hydraulic system have on its work? How to eliminate?
Hydraulic g lifting capacity is in general use in ships a cargo handling equipment, it has large lifting capacity, convenient manipulation, impact resistance, good braking performance, safe and reliable, loading and unloading goods with high efficiency and good adaptability to the goods. Major shipping companies in our country by using various types of hydraulic g in ships more than one thousand units, cosco (group) corporation on ships of various types of hydraulic g has more than 500 units. Hydraulic grams of the crane is a kind of high technical content of electricity, liquid, machine integration of cargo ship equipment, in use process, needs to have certain professional knowledge of technical management personnel, according to the requirements for routine maintenance. Hydraulic grams to hang in the practical work often because of a lack of proper maintenance, improper operation, such as poor working environment and disrepair, cause high failure rate. According to some shipping companies for its five ships used by 25 sets of hydraulic g lifting capacity of the cost of maintenance for five years, average annual per ship hydraulic g to lift maintenance costs more than 2 million yuan. For hydraulic g lifting capacity, many problems exist in the use of Shanghai maritime university and Shanghai in 1997 of cosco group, the lifting capacity of hydraulic g type, the cause of the common faults and maintenance management, maintenance problems are studied in the process, put forward a series of measures obtained obvious effect.
Open the oil pump to release the piston and let the piston go up or down. Or pump empty circulation. Then stop the pump.
Hydraulic g lifting capacity regulation work mainly from three aspects: one is organized by research experts and personnel management efficiency and hydraulic lifting capacity of management, of hydraulic lifting capacity of fault types, fault causes classified analysis, has practical value to write technical documents, for ship management personnel, and to be perfected constantly in use; Second, by improving the management of professional knowledge, ability of fault diagnosis and maintenance skills training, in order to improve the management of maintenance and management level, and actively carry out active preventive maintenance; Third, the fault of hydraulic system is 70% of the problems related to the cleanness of oil, and strictly control the cleanliness of hydraulic system, so that it can be kept within the allowable limits.
