The invention discloses a jack for a subway construction trolley, and relates to the field of subway construction. Comprising a base and jacks; the jack is vertically arranged and is connected to the base; a jack output shaft is upwards connected with a strut; the top end of the strut is connected with a horizontal bearing plate; the device further comprises left and right supporting mechanisms. The supporting mechanism comprises a sleeve and a movable rod; the bottom end of the sleeve is connected to the base; the top end of the movable rod is connected to the lower portion of the horizontal bearing plate, and the lower portion of the movable rod is sleeved with the sleeve. Protruding parts are arranged on the front side and the rear side of the lower portion of the sleeve, and a plurality of horizontal springs are arranged on the inner walls of the protruding parts and connected with horizontal blocks. The jack is started to jack the subway construction trolley; when the jack breaks down, the movable rod moves upwards along with the jack, the horizontal block pops up and is folded under the action of resilience force of the horizontal spring, and the folded horizontal block stops descending of the movable rod, so that when the jack breaks down, the folded horizontal block can still prevent the movable rod from descending, and the trolley is prevented from falling.
本发明公开了一种用于地铁施工台车的千斤顶,涉及地铁施工领域;包括底座、千斤顶;千斤顶为竖向布置,千斤顶连接于底座上;千斤顶输出轴向上连接有支柱,支柱顶端连接有水平承载板;还包括左右两个支撑机构;支撑机构包括套筒、活动杆;套筒底端连接于底座上;活动杆顶端连接于水平承载板下部,活动杆下部套设于套筒内;套筒下部在其前后两侧均设有凸出部,凸出部内壁设有多个水平弹簧,水平弹簧连接有水平块。启动千斤顶对地铁施工台车进行顶升;活动杆跟着向上运动,水平块在水平弹簧的回弹力作用下弹出并合拢,已合拢的水平块对活动杆的下降进行阻挡,从而使得在千斤顶发生故障时,合拢的水平块依然能阻止活动杆下降,从而阻止台车下坠。
Jack for subway construction trolley
一种用于地铁施工台车的千斤顶
2025-03-11
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 |