Self-buffering gas-liquid mixing multi-stage ejection mechanism

Abstract

The invention discloses a self-buffering gas-liquid mixing multi-stage ejection mechanism, which uses gas as a power source, oil as a pressure transmission medium, and combines the form of multi-stage piston cylinders sliding and cooperating with each other to form a gas-liquid mixing multi-stage ejection mechanism , which reduces the relative motion speed of the moving parts at all levels of the ejection mechanism, effectively reduces the sealing difficulty during high-speed ejection, and can realize high-speed ejection within a limited motion stroke; the throttling buffer structure, oil buffer and unloading groove are adopted. Combined, the self-buffering function of the multi-stage ejection mechanism is realized, and an oil filling port is opened to facilitate oil filling and oil change maintenance; the invention can be applied to military and civilian ejection of carrier-based aircraft, missiles, unmanned aerial vehicles, ejection experimental devices, etc. In many fields, the sealing performance is reliable, and it can provide ejection with self-buffering function under the condition of limited installation space, with high efficiency and good controllability.

Description

technical field [0001] The invention belongs to the technical field of ejection devices, in particular to a self-buffering gas-liquid mixing multistage ejection mechanism. Background technique [0002] At present, the main ejection methods are gun type, gas type, steam type, compressed air type, hydraulic type, hydraulic pneumatic type, electromagnetic type and so on. [0003] Among them, the cannon-type ejection mechanism has a large impact overload and is uncontrollable, and the gas-fired ejection mechanism has high-temperature ablation phenomenon; the steam-type ejection mechanism (that is, the open cylinder) requires a large amount of steam consumption, poor sealing effect, low energy utilization rate, and ejection The acceleration distance is long; the compressed air ejection method depends on the pressure and volume of the gas cylinder, and there is also the problem that it is difficult to ensure the sealing performance; the hydraulic ejection mechanism has a high ejec...

AI Technical Summary

Problems solved by technology

[0003] Among them, the cannon-type ejection mechanism has a large impact overload and is uncontrollable, and the gas-fired ejection mechanism has high-temperature ablation phenomenon; the steam-type ejection mechanism (that is, the open cylinder) requires a large amount of steam consumption, poor sealing effect, low energy utilization rate, and ejection The acceleration distance is long; the compressed air ejection method depends on the pressure and volume of the gas cylinder, and there is also the problem that it is difficult to ensure the sealing performance; the hydraulic ejection mechanism has a high ejection speed and fast response, but it is suitable for ejecting heavy duty at an ultra-high ejection speed. When the load is loaded, it is necessary to design a hydraulic control valve with a large flow rate and high-speed response, and the existing sealing technology is difficult to ensure a reliable seal between the sleeves in the ejection mechanism; the advanced electromagnetic ejection method is not affected by the ejection load, ejection distance, The ejection speed is limited, and the controllability is strong, but there is strong magnetic field interference, and the energy consumption is huge, and the energy device required is huge, and it is only suitable for large nuclear-powered aircraft carriers.

[0004] In addition, the gas-liquid hybrid power ejection device proposed in patent 201010524849.0 uses gas as the power source and oil as the pressure transmission medium. It has good ejection performance and effectively combines the advantages of pneumatic ejection and hydraulic ejection. However, as a single-stage cylinder, It is impossible to overcome the high-speed sealing problem when ejecting heavy loads at ultra-high speed; the patent 200910166299.7 uses multi-stage gas-liquid mixing cylinders to avoid high-speed sealing problems, but when the cylinders of each stage move to the end of the stroke, there is no buffer structure, which will cause mutual interaction between the stages. Collision will easily damage the ejection device, and the structural design of the multi-stage cylinder has inherent problems that it is impossible to fill the liquid to the end and replace the internal oil.

Images