The invention discloses a steel strand jack with a pre-tightening function, and belongs to the field of jacks, the steel strand jack comprises an annular supporting plate, a hoisting handle is fixedly mounted on the annular supporting plate, and a lifting assembly, an auxiliary assembly and a fixing assembly are arranged in the annular supporting plate. According to the number and the distribution position of the steel strands to be tensioned, the needed circular anchorage device, the lifting circular plate and the clamping circular plate can be conveniently replaced, the fixing assembly can enable the trapezoidal pressing plate to fix the steel strands firstly, then the steel strands are in a straightened state under the action of the annular pressing plate and the lifting cylinder, the situation that the steel strands are broken due to uneven stress is avoided, and the service life of the steel strands is prolonged. Through mutual cooperation of the pulling-up assembly, the auxiliary assembly and the fixing assembly, the jack can be rapidly assembled firstly, then the steel strand is pre-tightened and tensioned, and therefore the working efficiency of the jack can be greatly improved.
本发明公布了一种具有预紧功能的钢绞线千斤顶,属于千斤顶领域,包括环形支撑板,环形支撑板上固定安装有吊装手柄,环形支撑板内设置有拉升组件、辅助组件、固定组件,通过将圆形锚具、拉升圆板、夹持圆板设置为可拆卸模式,便于根据待张拉的钢绞线的数量和分布位置更换所需的圆形锚具、拉升圆板、夹持圆板,固定组件能够先使得梯形按压板对钢绞线进行固定,再在环形按压板和拉升圆筒的作用下,使得钢绞线处于绷直状态,避免钢绞线受力不均匀造成断裂,通过拉升组件、辅助组件、固定组件三者的相互配合,能够先快速实现千斤顶组装,然后对钢绞线进行预紧和张拉,从而能够极大的提高千斤顶的工作效率。
Steel strand jack with pre-tightening function
一种具有预紧功能的钢绞线千斤顶
2023-09-22
Patent
Elektronische Ressource
Chinesisch
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 |
Europäisches Patentamt | 2015
|DEVICE TO HOLD AND LOCK A SCISSOR JACK SCREW FROM LOOSENING AFTER TIGHTENING
Europäisches Patentamt | 2019
|