Cross stacking type water collecting combination module and assembling method thereof

The invention relates to the technical field of rainwater collecting modules, in particular to a cross stacking type water collecting combination module and an assembling method thereof. The water collecting combination module is composed of an upper portion and a lower portion which are connected with each other in an inserted mode to form a hollow-out cube, the lower portion is formed by assembling multiple lower components which are assembled side by side in the longitudinal direction or assembled in a crisscross mode, and the upper portion is formed by assembling multiple upper components which are assembled side by side in the transverse direction or assembled in the crisscross mode. According to the cross stacking type water collecting combination module, a traditional assembling combination mode that the upper components are in one-to-one correspondence with the lower components is changed, the upper components can be assembled by adopting a mode of transverse assembling or transverse and longitudinal combined assembling, the reassembled rainwater collecting module is made to be more stable, the compression resistance is strong, the service life is prolonged, and the cost is reduced.