Abstract: A light source assembly includes a first annular reflector, a second annular reflector and a plurality of first light source modules. The first annular reflector has a first reflective surface. The second annular reflector is coaxial with the first annular reflector. A radius of the first annular reflector is greater than that of the second annular reflector. The second annular reflector has a second reflective surface facing the first reflective surface. The first light source modules take a central axis of the first annular reflector as a center and annularly arranged around the center. The first light source modules provide first beams to the first reflective surface, which reflects the first beams to the second reflective surface. The second reflective surface reflects the first beams and makes the first beams emit along a direction parallel to a central axis of the second annular reflector. A projection device is also provided.

Abstract: An arrangement structure of a stacker and a reclaimer, comprises a stacker, a reclaimer, a stacker travelling track, a reclaimer travelling track, a material input conveyor, a material output conveyor, a material storage yard, and a closed material storage shed. The stacker and the material input conveyor are inside the reclaimer, and the reclaimer upwards straddles the stacker and the material input conveyor. The stacker and the material input conveyor penetrate through an internal space of the reclaimer. An arrangement form that a rack of the reclaimer upwards straddles the stacker is adopted so that a problem of interference caused when the stacker is as high as an upper travelling platform of the reclaimer is solved. The upper travelling platform of the reclaimer does not need to be independently arranged.

Abstract: An arrangement structure of a stacker and a reclaimer, comprises a stacker, a reclaimer, a stacker travelling track, a reclaimer travelling track, a material input conveyor, a material output conveyor, a material storage yard, and a closed material storage shed. The stacker and the material input conveyor are inside the reclaimer, and the reclaimer upwards straddles the stacker and the material input conveyor. The stacker and the material input conveyor penetrate through an internal space of the reclaimer. An arrangement form that a rack of the reclaimer upwards straddles the stacker is adopted so that a problem of interference caused when the stacker is as high as an upper travelling platform of the reclaimer is solved. The upper travelling platform of the reclaimer does not need to be independently arranged.