The invention discloses a short-
stroke crankshaft connecting rod device for a tricot
machine. The invention comprises eccentric shafts, a first shaft journal (4), a second shaft journal (5), a central
wall plate (7), a grooved needle
bed connected with a first eccentric shaft (1), a
yarn guide needle
bed crankshaft connecting rod mechanism, a stylet
bed crankshaft connecting rod mechanism connected with a second eccentric shaft (2), and a sinker bed crankshaft connecting rod mechanism connected with a third eccentric shaft (3). The first shaft journal (4) and the second shaft journal (5) are respectively and fixedly connected with the end parts of the second eccentric shaft (2) and the third eccentric shaft (3). The second eccentric shaft (2), the first eccentric shaft (1) and the third eccentric shaft (3) are connected with each other in turn and are rotated around the first and second shaft journals (4, 5). The short-
stroke crankshaft connecting rod device effectively shortens the motion
stroke of weaving elements; the grooved needle travel is between 8 and 12 millimeters; the moving time of
yarn guide needles is between 1.5 and 1.8 microseconds; the engine speed is improved to be 2500 to 3000 turns per minute; the
noise is less than or equal to 85 decibels; the vibration is small; the
energy consumption is low; the device is suitable for high-speed rotation; the power is small; and the productivity is obviously improved.