During changeover, stroke changes with the new system are accomplished in three easy steps: The crank-throw bolts and locating shoulder bolt are removed; an adjustment screw allows the crank throw to travel in the gibs to the desired stroke setting; and then the crank-throw bolts and locating shoulder bolt are reinserted.
These innovations include full safety guards that provide easy accessibility for maintenance and tool changeover, side-loading capabilities, EZ-adjust crank throws, fine-adjust platen parallelism, drop-away release connecting rods, treadle lift, canopy retraction, and automated controls for tool positioning.
Its sideshaft runs on the center of the crankshaft (most are next to a flywheel), the belt pulley is also in the center of its crankshaft, and the crank throw
and rod are on the outer end of the crankshaft opposite the flywheel.
The 3/4" X 17-1/2" drive axle shaft utilizes a 3/16" X 1-1/2" X 5" flat metal crank throw (a 2-1/2" washer, welded in place 1" from that bar, makes a good walk stop).
A 1"-long piece of 1/2" conduit welded to the end of the connecting rod serves as a wrist sleeve through which the driving mechanism can be bolted to the crank throw. At the front end of the rod, a 1/2" nut allows for the installation (and adjustment) of an eyebolt, or--if you have expensive tastes--a Heim joint.
Siemens' Dresser-Rand process reciprocating compressors are available with up to 10 crank throws
, as single-throw or balanced-opposed configurations.
"In fact, in some applications it can meet traditional operating requirements with a reduced number of crank throws
With the 90[degrees] layout and offset crank throws
, second-order vibrations are reduced.
With the 90 degree layout and offset crank throws
, second-order vibrations are reduce.
It also identifies a number of conditions, including short or long crank throws
or short or long decks to the crank centerline.
Recips for gas transmission service almost always incorporate integral engines with connecting rods for compressor cylinders connected to the same or adjacent crank throws
of the power pistons.
At the same time, connecting rod length has been increased by 3 percent to take account of the revised crank throws