  We describe topological edge solitons in a continuous dislocated Lieb array
of helical waveguides. The linear Floquet spectrum of this structure is
characterized by the presence of two topological gaps with edge states residing
in them. A focusing nonlinearity enables families of topological edge solitons
bifurcating from the linear edge states. Such solitons are localized both along
and across the edge of the array. Due to the non-monotonic dependence of the
propagation constant of the edge states on the Bloch momentum, one can
construct topological edge solitons that either propagate in different
directions along the same boundary or do not move. This allows us to study
collisions of edge solitons moving in the opposite directions. Such solitons
always interpenetrate each other without noticeable radiative losses; however,
they exhibit a spatial shift that depends on the initial phase difference.
