沥青搅拌设备振动筛筛体强度分析-《郑州大学学报(工学版)》

文章信息/Info

Title:: Research on the Intensity of the Vibration Screen in the Asphalt Mixing Plant

作者:: 孟彩茹; 冯忠绪; 李磊; 等.; 长安大学道路施工技术与装备教育部重点实验室,陕西西安,710064, 长安大学道路施工技术与装备教育部重点实验室,陕西西安,710064, 长安大学道路施工技术与装备教育部重点实验室,陕西西安,710064, 长安大学道路施工技术与装备教育部重点实验室,陕西西安,710064

Author(s):: MENG Cairu; FENG Zhongxu; LI Lei; etc;; Key Laboratory for Highway Construction Technology and Equipment of Ministry of Edueation, Chang’n University, Xi’an 710064，China

Keywords:: construction machinery; vibration screen; screening effciency; intensity; stress

摘要:: 振动筛的筛分效率达不到国家标准,使得混凝土级配不准,这是造成路面早期破坏的主要原因之一,提高振动筛筛分效率的问题亟待解决.针对沥青搅拌设备多层振动筛筛分效率低的问题,对5SZD260型直线振动筛的筛分效率进行了测试,找出了造成筛分效率不高的主要原因是振幅较低,而提高振幅受限于振动筛筛体的强度与寿命.为详细分析振动筛筛体的强度,测试了该振动筛的振动参数和振动筛筛体的应力,在ANSYS中对振动筛进行静力强度、热力耦合和模态仿真分析,并进行试验验证,结果表明:将筛体振幅增大到4.02 mm,振动筛激振力提高到原来的1.6倍,这时筛分效率就能够达到国家标准的要求,同时筛体强度也满足要求.

Abstract:: The sereening efficiency did not meet the national standards, which made the concrete gradation notexact, It is one of the causes for early damage roads, so the urgent problem to be solved is to improve thescreening efficiency of the vibration sereen. The 5$ZD260 vibration screen was tested about the screening eff.ciency in the asphalt mixing plant. The vibration parameter and the stress parameters on the vibration screenwere tested. The low screening efficiency was mainly due to low amplitude, but improving the amplitude of thescreen directly influenced the intensity of the screen and its service life. In order to make a detailed analysis ofthe vibration screen about its intensity, the vibration screen was simulated in ANSYS about the static stress,thermal stress and model. And then these were tested for inspecting the results. When the amplitude of the vi.bration screen increased to 4mm and the vibration force enhanced on the original 1.6 times, the sereening eff.ciency can reach the national slandard and the intensity of the screen box was also enough.