CAJ | 학술논문

针对剪叉机构在运动过程中平台受力点随时间变化等特点，提出了一种新型套筒式剪叉机构，以套筒式可伸缩杆为主要承力构件，采用分级顶推的方式上升。对2种机构进行了详细的运动学和力学分析，比较两者的主要性能差异，并通过实例与相关软件仿真验证了分析的正确性。给出了改进机构的优化条件，运用线性加权和法对改进机构做出了相应优化，利用有限元方法对其进行了模态分析，验证了机构的稳定性。
침대전차궤구재운동과정중평태수력점수시간변화등특점，제출료일충신형투통식전차궤구，이투통식가신축간위주요승력구건，채용분급정추적방식상승。대2충궤구진행료상세적운동학화역학분석，비교량자적주요성능차이，병통과실례여상관연건방진험증료분석적정학성。급출료개진궤구적우화조건，운용선성가권화법대개진궤구주출료상응우화，이용유한원방법대기진행료모태분석，험증료궤구적은정성。
In view of the features such as the platform load-bearing points changing over time during the scissors fork mechanism in operation,a new-type telescopic scissors fork mechanism is put forward in the paper.The telescopic expan-sion link rises in a way of grading pushing as the main load-bearing component.Detailed kinematics and mechanical analysis is performed for both mechanisms,to compare major performance differences.The analysis is verified by examples and re-lated software simulation.Furthermore,the paper describes the optimal conditions of improved mechanism,to make corre-sponding optimization for it using the linear weighted sum method,with modal analysis performed using the finite element method,to prove the mechanism stable.