負(fù)載對(duì)氣缸緩沖性能影響的研究
發(fā)布時(shí)間：2019-01-10 11:15
【摘要】：目前國內(nèi)外很多氣動(dòng)元件供應(yīng)商都已研發(fā)出了高性能的內(nèi)置全機(jī)械結(jié)構(gòu)式的緩沖氣缸,但是存在的最大缺陷是氣缸的良好緩沖狀態(tài)受工況變化范圍很小,當(dāng)供氣壓力、質(zhì)量負(fù)載或氣缸的流速任何一種參數(shù)變化后,人為調(diào)整好的氣缸緩沖狀態(tài)就會(huì)受到破壞,從而出現(xiàn)爬行、反彈、撞擊端蓋等降低氣缸壽命及工作效率的現(xiàn)象；而可自調(diào)整的緩沖氣缸雖可適應(yīng)一定的工況變化,但是離實(shí)際批量生產(chǎn)應(yīng)用還有一定距離,因此對(duì)工況變化引起緩沖性能變化的研究顯得非常關(guān)鍵。 本課題針對(duì)質(zhì)量負(fù)載變化對(duì)緩沖性能的影響進(jìn)行深入研究,闡述負(fù)載變化破壞緩沖性能的機(jī)理,進(jìn)行緩沖氣缸仿真和實(shí)驗(yàn)分析,進(jìn)而提出負(fù)載變化自調(diào)整緩沖氣缸的方案。 基于氣體動(dòng)力學(xué)建立了緩沖氣缸關(guān)于能量、流量和運(yùn)動(dòng)的數(shù)學(xué)模型,為緩沖氣缸的仿真及實(shí)驗(yàn)分析奠定理論基礎(chǔ)。 以Delphi編程語言為開發(fā)環(huán)境,基于龍格庫塔法對(duì)緩沖氣缸的數(shù)學(xué)模型進(jìn)行數(shù)值求解,得到緩沖氣缸不同結(jié)構(gòu)參數(shù)下氣缸位移、速度、加速度及各腔室壓力的運(yùn)動(dòng)變化曲線。 搭建了緩沖氣缸的緩沖性能測(cè)試實(shí)驗(yàn)臺(tái),根據(jù)各傳感器的輸入輸出數(shù)學(xué)關(guān)系并基于Matlab的RTW模塊設(shè)計(jì)了氣缸緩沖性能數(shù)據(jù)采集程序。 通過實(shí)驗(yàn)研究分析了負(fù)載變化對(duì)普通緩沖氣缸及高速氣缸緩沖性能的影響。通過大量的實(shí)驗(yàn)得到了不同負(fù)載下氣缸位移、速度、加速度及各腔室壓力的運(yùn)動(dòng)變化曲線。對(duì)氣缸不同緩沖狀態(tài)下表現(xiàn)出來的爬行、撞擊或嚴(yán)重反彈等現(xiàn)象進(jìn)行了分析,并進(jìn)行了氣缸緩沖能量的理論推導(dǎo)與實(shí)驗(yàn)計(jì)算,提出了負(fù)載在一定變化范圍內(nèi)的自調(diào)整緩沖氣缸的方案。
[Abstract]:At present, many domestic and foreign pneumatic component suppliers have developed high performance fully mechanically built-in cushioning cylinders. However, the biggest defect is that the good buffer state of the cylinders varies very little by the working conditions, when the air supply pressure, After the change of any parameter of mass load or cylinder velocity, the artificially adjusted cylinder buffer state will be destroyed, which will result in the phenomena of crawling, rebounding and impingement on the end cap to reduce the cylinder life and working efficiency. Although the self-adjustable buffer cylinder can adapt to certain operating conditions, it is still far away from the actual batch production, so it is very important to study the change of buffer performance caused by the change of working conditions. In this paper, the effect of load change on buffer performance is studied in depth, the mechanism of load change destroying buffer performance is expounded, the simulation and experimental analysis of buffer cylinder are carried out, and the scheme of self-adjusting buffer cylinder with load variation is put forward. Based on the gas dynamics, the mathematical models of the energy, flow and motion of the buffer cylinder are established, which lays a theoretical foundation for the simulation and experimental analysis of the buffer cylinder. Taking Delphi programming language as the development environment, the mathematical model of the buffer cylinder is solved numerically based on Runge-Kutta method, and the displacement, velocity, acceleration and pressure change curves of the cylinder under different structural parameters of the buffer cylinder are obtained. The buffer performance test bench of the buffer cylinder was built. According to the relationship between the input and output of the sensors and the RTW module of Matlab, the data acquisition program of the buffer performance of the cylinder was designed. The effect of load variation on the buffering performance of ordinary and high speed air cylinders is analyzed experimentally. Through a large number of experiments, the displacement, velocity, acceleration and pressure curves of the cylinder under different loads are obtained. The phenomena of crawling, impingement or severe rebound of cylinder under different buffer states are analyzed, and the theoretical derivation and experimental calculation of cylinder buffer energy are carried out. The scheme of self-adjusting buffer cylinder with load varying in a certain range is put forward.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH138.51
本文編號(hào)：2406240
[Abstract]:At present, many domestic and foreign pneumatic component suppliers have developed high performance fully mechanically built-in cushioning cylinders. However, the biggest defect is that the good buffer state of the cylinders varies very little by the working conditions, when the air supply pressure, After the change of any parameter of mass load or cylinder velocity, the artificially adjusted cylinder buffer state will be destroyed, which will result in the phenomena of crawling, rebounding and impingement on the end cap to reduce the cylinder life and working efficiency. Although the self-adjustable buffer cylinder can adapt to certain operating conditions, it is still far away from the actual batch production, so it is very important to study the change of buffer performance caused by the change of working conditions. In this paper, the effect of load change on buffer performance is studied in depth, the mechanism of load change destroying buffer performance is expounded, the simulation and experimental analysis of buffer cylinder are carried out, and the scheme of self-adjusting buffer cylinder with load variation is put forward. Based on the gas dynamics, the mathematical models of the energy, flow and motion of the buffer cylinder are established, which lays a theoretical foundation for the simulation and experimental analysis of the buffer cylinder. Taking Delphi programming language as the development environment, the mathematical model of the buffer cylinder is solved numerically based on Runge-Kutta method, and the displacement, velocity, acceleration and pressure change curves of the cylinder under different structural parameters of the buffer cylinder are obtained. The buffer performance test bench of the buffer cylinder was built. According to the relationship between the input and output of the sensors and the RTW module of Matlab, the data acquisition program of the buffer performance of the cylinder was designed. The effect of load variation on the buffering performance of ordinary and high speed air cylinders is analyzed experimentally. Through a large number of experiments, the displacement, velocity, acceleration and pressure curves of the cylinder under different loads are obtained. The phenomena of crawling, impingement or severe rebound of cylinder under different buffer states are analyzed, and the theoretical derivation and experimental calculation of cylinder buffer energy are carried out. The scheme of self-adjusting buffer cylinder with load varying in a certain range is put forward.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH138.51
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