Wire lifting device with variable lead screw stroke

A through hole is formed in the middle of a V-shaped cross beam, a connecting seat is installed in the middle of the V-shaped cross beam, wire lifting hooks are hinged to the two ends of the cross beam through slot structures, a lead screw penetrates through the middle of the cross beam and the connecting seat, the top end of the lead screw is connected with a rotating seat with a connecting lug, and a crank can be connected to the lead screw above or below the cross beam. According to the wire lifting device, the position of the crank can be arranged as required, so that the crank and the screw rod can be conveniently connected at different positions, the stroke of the screw rod is changed, and the applicability and the construction convenience of the wire lifting device are greatly improved. 一种丝杆行程可变式提线器，V型横梁的中部设有通孔并安装有连接座，横梁两端通过插槽结构铰接有提线钩，丝杆穿过横梁中部和连接座，丝杆顶端连接带有连接耳的旋转座，摇把可连接于横梁上方或下方的丝杆上。该种提线器可以视需要而设置摇把的位置，使其与丝杆之间可以方便地连接于不同位置，从而改变丝杆的行程，极大地提高了提线器的适用性和施工方便性。