The invention discloses a multi-lead-screw electric lifting rod structure. Nine round pipes which have the axes on the same straight line and are sleeved together are arranged on a base, the diameters of the nine round pipes are changed from large to small, in the nine round pipes, the outermost round pipe is a bottom pipe, the innermost round pipe is a top pipe, the rest round pipes are inner pipes, gaps are reserved between the adjacent round pipes, and guide keys are arranged on the inner walls of the bottom pipe, the top pipe and the inner pipes in the axial direction; and the upper ends of the bottom pipe and the inner pipe are provided with an annular upper outer sleeve and an upper guide sleeve, and the lower end of the inner pipe is provided with an annular limiting sleeve. According to the manufacturing method of the multi-lead-screw electric lifting rod structure, internal threads of a pipe opening in the lower end of each inner circular pipe lead screw and external threads of the adjacent inner circular pipe lead screw are screwed together, the lead screws are sequentially unfolded from outside to inside when the lifting rod is unfolded, and the lead screws are sequentially closed from inside to outside when the lifting rod is closed so as to guarantee that actions accord with the designed sequence. The lifting rod structure has the advantages that: the overall bearing capacity is high, reliability is high, mechanical lock switching is smooth, and in the ascending and descending process of the rod body, reliability is high, operation is stable, lock opening and closing are smooth, and disorder is avoided.
一种多丝杠电动升降杆结构,底座上有轴线在同一直线上的直径从大到小套在一起的九根圆管,九根圆管中,最外一根是底管,最里的是顶管,其余的是内管,相邻圆管之间留有间隙,底管、顶管和内管的内壁,有沿轴向的导向键;底管、内管的上端有圆环形上外套和上导向套,内管的下端有圆环形限位套。一种多丝杠电动升降杆结构的制作方法,每根内圆管丝杠下端管口内螺纹与相邻内圆管丝杠的外螺纹相互旋在一起,升降杆展开时丝杠从外到内的顺序依次展开,闭合时从内到外的顺序依次闭合,保证动作符合设计依次顺序。本发明的优点:整体承载能力强,可靠性高,机械锁切换顺畅,杆体在上升,下降过程中,可靠性高,运行平稳,开关锁顺畅,不乱序。
Multi-lead-screw electric lifting rod structure and manufacturing method
一种多丝杠电动升降杆结构及制作方法
2022-02-25
Patent
Electronic Resource
Chinese
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |