Portable and movable underground cavern top arch anchor cable descending device

The utility model relates to a portable and movable underground cavern top arch anchor cable descending device, and belongs to the technical field of anchor cable construction of water conservancy and hydropower civil engineering. The portable and movable underground cavern top arch anchor cable descending device comprises a steel structure fixing frame, a low-speed winch, a rock entering lead screw and an orifice guide pulley block. The low-speed winch is fixed to the steel structure fixing frame, the rock-entering lead screw is fixed to the lower cable position of an underground cavern top arch, the hole opening guide pulley block is installed on the rock-entering lead screw, and a winch steel wire rope 9 of the low-speed winch penetrates through the hole opening guide pulley block in a matched mode to be fixed to an anchor cable bundle. The low-speed winch and the hole opening guide pulley block are matched to carry out cable descending work of the underground cavern top arch anchor cable, efficiency and c