The soil discharging variable-screw-pitch type spiral conveyor has the advantages that the reliability and the high efficiency of the spiral conveyor are greatly improved, so the digging speed of the digging machine is accelerated, and the construction period is greatly shortened.陈根林...
the document DE-200 09 075 U, which proposes modifying the spacing between blanks by means of an endless screw with continuously variable pitch; the document EP-979 720, which proposes several ways of modifying the spacing between blanks: by means of a pantograph, or by means of jacks; the...
5. A conveyor as in claim 4 where said means for maintaining the movement of said belt at one of said first and second speeds includes at least one cylindrical screw having a constant pitch screw thread, said thread engaging predetermined folds of said belt. 6. A conveyor as in claim 1...
The variable-pitch groove-type helical conveyor comprises a screw and helical blades which are arranged on the screw, wherein the pitch of each helical blade is increased along the moving direction of the material towards a material outlet. According to the variable-pitch groove-type helical ...
Yet further, the support moving body may be provided in a constant-speed moving section of the fibrous body, and a synchronization screw may be provided in a speed-change section between the support moving body, the synchronization screw having a spiral groove which changes in pitch from an en...
The utility model relates to a bottle blank conveyor for blow molding machines, in particularly relating to a pitch change device, which is composed of a screw rod, a drive unit driving the screw rod, a plurality of clamps and a group of incremental launching devices, wherein the screw rod...
The screw or threaded groove 14 of the conveyor worm 12 has a rather high pitch at both ends thereof, while along a middle portion thereof, the pitch is considerably smaller. Consequently, as illustrated, the trays 8 will be brought together almost so as to touch each other, for example,...