Pressurized ejection servo actuation system

Abstract

The invention belongs to the field of ejection systems, and discloses a pressurized ejection servo actuation system. The system comprises a bag partition type energy accumulator, a continuous pressurization system, an electro-hydraulic servo valve and a single-rod hydraulic cylinder, wherein, the continuous pressurization system comprises a three-position four-way electromagnetic directional valve, a double-acting pressurization cylinder and four one-way valves, an output oil way is intersected with an oil way of the bag partition type energy accumulator and connected with the electro-hydraulic servo valve, and the electro-hydraulic servo valve controls the single- rod hydraulic cylinder; and the double-acting pressurization cylinder comprises a large piston, a first small piston and a second small piston which are connected through a piston rod, a large oil cavity and a small oil cavity are formed in the left end and the right end of the double-acting pressurization cylinder respectively, and the small oil cavities are used for outputting pressurized oil to the bag partition type energy accumulator. According to the system, oil in the ejection servo actuation system is pressurized, the power-to-weight ratio of the system is increased, the flow of the system is reduced, the type selection difficulty of components is reduced, and the integration of the system is improved; and the continuous pressurization system with the double-acting pressurization cylinder as the core reduces the ejection time interval and improves the system efficiency.

Description

technical field [0001] The invention belongs to the field of ejection systems, and in particular relates to a servo actuation system for pressurized ejection. Background technique [0002] As a research hotspot all the time, ejection system has applications in many fields. Since ejection weapons require a greater ejection force and are limited by the low oil pressure provided by the main system, the flow rate of the traditional ejection servo actuation system is relatively large, and the volume and cost of components are relatively high. By boosting the low-pressure oil provided by the main system before ejecting, the system flow can be effectively reduced, the volume and cost of components can be reduced, and the difficulty of component selection can be reduced in the design stage. At the same time, the response frequency of the servo valve with small volume is usually higher, which can improve and increase the control accuracy during ejection. Contents of the invention ...

AI Technical Summary

Problems solved by technology

Due to the large requirements on the ejection force of ejection weapons and the low oil pressure provided by the main system, the flow rate of the traditional ejection servo actuation system is relatively large, and the volume and cost of components are relatively high.

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