The utility model provides a shield constructs with sealed of mortar tank (mixing) shaft and strutting arrangement belongs to the shield and constructs construction technical field. Including the connecting axle, with the coaxial fixed connection's of right -hand member of connecting axle (mixing) shaft, cup joint in being connected epaxial support group spare and connecting in the epaxial seal assembly of stirring, the (mixing) shaft runs through mortar tank's jar wall and extends to mortar tank's inside, seal assembly sets up jar wall department of running through mortar tank in the (mixing)shaft, support group spare sets up in the outside of mortar tank's jar wall. The utility model discloses the device aims at solving mortar tank stirring axle head seal failure, axle head and leaks the shield that the thick liquid causes and construct construction work inefficiency, bearing heating wearing and tearing so that support the problem that lost efficacy, this device can can not only realize effectively that the axle head of (mixing) shaft is sealed, prevents thick liquid with louing, has effectively solved the thick liquid of revealing simultaneously and has permeated the hidden danger in the bearing frame, prevents bearing wear, support inefficacy.