{"title":"混凝土泵臂架在垂直平面上的振动","authors":"E. P. Plavelskii, V. I. Skel’","doi":"10.1134/S1052618824700523","DOIUrl":null,"url":null,"abstract":"<p>The vibrations of a three-section boom of a concrete pump in the vertical plane on a three-mass dynamic system are considered separately from the torsional vibrations of the boom and its vibrations in the horizontal plane. The differential equations are based on the generalized Hooke law. The values of the periods of natural oscillations of the boom <i>T</i><sub>1</sub> = 1.33 s, <i>T</i><sub>2</sub> = 0.32 s, and <i>T</i><sub>3</sub> = 0.132 s and the corresponding forms of these vibrations are given. It has been shown that when the pump performance is close to the maximum, resonance at a low frequency is possible. Some positions and modes of operation of the boom are considered, in which significant additional dynamic loads may arise in its middle section. Recommendations are given on ways to reduce the dynamics of a concrete pump boom in the vertical plane.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 7","pages":"663 - 667"},"PeriodicalIF":0.4000,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Oscillations of the Concrete Pump Boom in the Vertical Plane\",\"authors\":\"E. P. Plavelskii, V. I. Skel’\",\"doi\":\"10.1134/S1052618824700523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The vibrations of a three-section boom of a concrete pump in the vertical plane on a three-mass dynamic system are considered separately from the torsional vibrations of the boom and its vibrations in the horizontal plane. The differential equations are based on the generalized Hooke law. The values of the periods of natural oscillations of the boom <i>T</i><sub>1</sub> = 1.33 s, <i>T</i><sub>2</sub> = 0.32 s, and <i>T</i><sub>3</sub> = 0.132 s and the corresponding forms of these vibrations are given. It has been shown that when the pump performance is close to the maximum, resonance at a low frequency is possible. Some positions and modes of operation of the boom are considered, in which significant additional dynamic loads may arise in its middle section. Recommendations are given on ways to reduce the dynamics of a concrete pump boom in the vertical plane.</p>\",\"PeriodicalId\":642,\"journal\":{\"name\":\"Journal of Machinery Manufacture and Reliability\",\"volume\":\"53 7\",\"pages\":\"663 - 667\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2024-12-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Machinery Manufacture and Reliability\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1052618824700523\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Machinery Manufacture and Reliability","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1052618824700523","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Oscillations of the Concrete Pump Boom in the Vertical Plane
The vibrations of a three-section boom of a concrete pump in the vertical plane on a three-mass dynamic system are considered separately from the torsional vibrations of the boom and its vibrations in the horizontal plane. The differential equations are based on the generalized Hooke law. The values of the periods of natural oscillations of the boom T1 = 1.33 s, T2 = 0.32 s, and T3 = 0.132 s and the corresponding forms of these vibrations are given. It has been shown that when the pump performance is close to the maximum, resonance at a low frequency is possible. Some positions and modes of operation of the boom are considered, in which significant additional dynamic loads may arise in its middle section. Recommendations are given on ways to reduce the dynamics of a concrete pump boom in the vertical plane.
期刊介绍：
Journal of Machinery Manufacture and Reliability is devoted to advances in machine design; CAD/CAM; experimental mechanics of machines, machine life expectancy, and reliability studies; machine dynamics and kinematics; vibration, acoustics, and stress/strain; wear resistance engineering; real-time machine operation diagnostics; robotic systems; new materials and manufacturing processes, and other topics.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
