Detachable sliding block

The utility model discloses a detachable sliding block, and relates to the technical field of bridge construction. The detachable sliding block comprises a base. The cushion layer comprises a plurality of detachable layers which are arranged in a stacked mode, the cushion layer is detachably connected to the base through a first connecting assembly, and a steel beam bearing face is formed on the top of the cushion layer. In the pushing and dragging construction of the steel beam, the height of the detachable sliding block can be changed, the detachable sliding block is placed at the position where the support is arranged, and the pushing elevation of the steel beam can be kept unchanged when the sliding block drives the steel beam to slide by changing the height of the detachable sliding block, so that the steel beam is prevented from colliding with a tower limb of a main tower; according to the construction method of the detachable sliding block, multiple sliding block types do not need to be arranged, so th