DRYIT Semi-Continuous Tray Drier
Practical Action
Saw and plane each bearing block to size, clamp the halves together and then drill the 42
mm diameter bearing hole and 8 mm fixing holes.
Chamfer one edge for flush fitting to the top centre beam, 2.
3) Plain Bearing
Make to drawing from oil impregnated hardwood (TD 010)
4) Cams
The four cams convert the rotational movement of the bearing shafts to horizontal and
vertical movement. It is important that these items are manufactured accurately to the
drawing (TD 014).
5) Tie Rods
Each tie rod is made from two bars. Cut and drill these according to the TD 005 drawing.
These are assembled in conjunction with the rest of the lifting mechanism as described in
the general Assembly section.
6) Bearing End Plates
Make according to drawing TD011
7) Bearing Shafts
Make according to drawing TD 007 Note that the shafts' ends should be flat and square for
smooth operation.
8) Operating Lever
This is made from similar tube to the bearing shafts. Once cut, each end is flattened and
holes cut or drilled.
9) Operating lever extension and handle
This is cut and bent before the thread is cut according to the drawing. TD 009. The bends
are made using a hammer and anvil/vice. Localised heating of the bar at the bends is
recommended.
10) Fingers
For effective functioning the fingers need to have the same profile. To achieve this the
manufacturing note on the engineering drawing (TD 004) must be followed.
11) Stop bar
The stop bar is cut according to the drawing and welded to the tie rods during assembly of
the lifting mechanism. (See drawing TD 009).
12) Handle hook
Cut the MS angle and weld up according to the engineering/drawing.
In the assembly of the lifting gear various nuts and bolts are used. This are listed below and
sketches of the fixing configurations given.
15