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Health management system and method of engineering machinery hydraulic system

A technology of hydraulic system and construction machinery, which is applied in the field of health management of hydraulic system of construction machinery, can solve the problems of consuming a lot of manpower, material and financial resources, low work efficiency, economic loss, etc., to reduce expenditure costs, high accuracy, and reduce time cost effect

Inactive Publication Date: 2015-02-04
湖南湘仪动力测试仪器有限公司
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AI Technical Summary

Problems solved by technology

Affecting normal production due to hydraulic system failure is the main factor causing economic losses
[0003] At present, the maintenance of construction machinery is still based on regular maintenance and after-the-fact maintenance. This mode consumes a lot of manpower, material resources and financial resources, and the work efficiency is low.

Method used

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  • Health management system and method of engineering machinery hydraulic system
  • Health management system and method of engineering machinery hydraulic system
  • Health management system and method of engineering machinery hydraulic system

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Embodiment Construction

[0045] figure 1 It is a structural schematic diagram of the mechanical hydraulic cylinder and its hydraulic system. When the hydraulic pump 3 is working, the hydraulic oil enters the hydraulic pump from the oil tank 1 through the filter 2, and enters the reversing valve 6 after passing through the speed regulating valve 4. When the reversing valve 6 is in the middle position, the hydraulic oil flows directly back to the oil tank 1 through the overflow valve 5; when the reversing valve 6 is in the left position, the hydraulic oil enters the hydraulic cylinder 9, and pushes the piston rod to drive the load 11 to move to the right; When the reversing valve 6 is in the right position, the piston rod drives the load 11 to move to the left. The speed regulating valve 4 is used to adjust the flow of hydraulic oil. When the load 11 is greater than the setting of the overflow valve 5, the hydraulic oil directly flows back to the oil tank 1 . The displacement sensor 10 is fixed on the ...

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Abstract

The invention provides a health management method of an engineering machinery hydraulic system. The health management method comprises the steps of: (1) receiving three parameters of an oil inlet flow, an oil inlet pressure and a piston rod displacement of a hydraulic cylinder in real time, then storing the parameters in a system database; (2), filtering and conditioning the acquired oil inlet flow, the acquired oil inlet pressure and the piston rod displacement, extracting actual data characteristic values, storing the actual data characteristic values in the system database; 3, reading the actual data characteristic values, calculating a relative reliability (RR) of the engineering machinery hydraulic system, evaluating the state of the engineering machinery hydraulic system according to the actual data characteristic values; and 4, giving optimal system parameters of the RR according to an evaluation result of the state of the engineering machinery hydraulic system. The health management method has the advantages that according to real-time parameters in the operation process of the engineering machinery hydraulic system, the RR of the system is calculated, the health state of the system is judged, improvement measures are made aiming at potential failure problems, and state regulation is carried out before failures occur, so that time and cost for failure maintenance are reduced.

Description

technical field [0001] The invention relates to a health management technology of hydraulic system of construction machinery. Background technique [0002] The hydraulic system is the most important part of construction machinery, which undertakes the functions of walking, driving, operation and control. Due to the inherent complexity of the hydraulic system, 70% of construction machinery failures are caused by hydraulic system failures. Affecting normal production due to hydraulic system failure is the main factor causing economic losses. [0003] At present, the maintenance of construction machinery is still based on regular maintenance and after-event maintenance. This mode is at the cost of consuming a lot of manpower, material and financial resources, and the work efficiency is low. According to statistics, more than 80% of the equipment downtime is used for fault diagnosis, while actual maintenance only accounts for less than 20% of the time. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00
Inventor 赵秀栩胡喆旻李瑞张卫兵胡志祥
Owner 湖南湘仪动力测试仪器有限公司
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