Two-mass, base-excited conveyor

A vibratory conveying device, comprising:

• an elongated trough for transporting materials;
• a base underlying said trough;
• a plurality of springs supporting said trough on said base;
• and
• a vibratory drive system operatively connected to said base for effecting vibratory movement of said trough for transporting materials,
• said base comprising a pair of base side members, and a laterally extending drive support member comprising a tubular member extending between and detachably connected at respective ends thereof to said base side members by a plurality of mechanical fasteners, said vibratory drive system being mounted on said drive support member said vibratory drive system comprising a pair of rotary vibratory drives detachably mounted on respective opposite sides of said drive support member by another plurality of mechanical fasteners
• said drive support member having a natural bending frequency at least four times higher than the operating speed of the conveying device.

A vibratory conveying device, comprising:

• an elongated trough for transporting materials;
• a base underlying said trough;
• a plurality of elongated leaf springs supporting said trough on said base;
• and
• a vibratory device system operatively connected to said base for effecting vibratory movement of said trough for transporting materials,
• said base comprising a pair of base side members each of a generally sheet-like configuration, and a laterally extending drive support member extending between and detachably connected to said base side members, said vibratory drive system being mounted on said drive support member,
• said drive support member including a pair of mounting plates at respective opposite ends thereof for respective detachable connection to said base side members with mechanical fasteners, and
• a transverse beam extending between said pair of mounting plates, said vibratory drive system including a pair of vibratory drives respectively mounted on opposite sides of said transverse beam.

A vibratory conveying device, comprising:

• an elongated trough for transporting materials;
• a base underlying said trough;
• a plurality of springs supporting said trough on said base;
• and
• a vibratory drive system operatively connected to said base for effecting vibratory movement of said trough for transporting materials,
• said base comprising a pair of base side members, and a laterally extending drive support member extending between and detachably connected to said base side members, said vibratory drive system being mounted on said drive support member,
• said drive support member having a natural bending frequency at least four times higher than the operating speed of the conveying device,
• said drive support member including a pair of mounting plates at respective opposite ends thereof, for respective detachable connection to said base side members with mechanical fasteners,
• said drive support member defining a plurality of threaded openings on opposite sides thereof, said vibratory drive system comprising a pair of vibratory drives removably mounted on respective opposite sides of said drive support member with mechanical fasteners received in said threaded openings.

A vibratory conveying device, comprising:

• an elongated trough for transporting materials;
• a base underlying said trough;
• a plurality of springs supporting said trough on said base;
• and
• a vibratory drive system operatively connected to said base for effecting vibratory movement of said trough for transporting materials,
• said base comprising a pair of base side members, and a laterally extending drive support member extending between and detachably connected to said base side members, said vibratory drive system being mounted on said drive support member,
• said drive support member having a natural bending frequency at least four times higher than the operating speed of the conveying device,
• said drive support member including a pair of mounting plates at respective opposite ends thereof, for respective detachable connection to said base side members with mechanical fasteners,
• said plurality of springs comprising a plurality of elongated leaf springs, and
• said vibratory drive system comprising a pair of rotary vibratory drives mounted on respective opposite sides of said drive support member.