TITLE:
Theoretical and Practical Studies of Determining the Force of the Lifting-Lowering of the Roll Box
AUTHORS:
Usmonov Shuxratjon Kamoljonovich
KEYWORDS:
Saw Gin, Roll Box, Pneumatic Cylinder, Rod, Angular Velocity, Angular Acceleration, Gravity Forces, Driving Force, Moment of Inertia, Function
JOURNAL NAME:
Engineering,
Vol.15 No.1,
January
31,
2023
ABSTRACT: The lifting and lowering mechanism of the roll box of the saw gin, being
an integral part of the ginning process, is used when starting the electric
motor of the saw cylinder until its rated speed is reached to prevent an
increase in the load current on it, as well as to start the ginning process.
The article defines the kinematics of the
movement, and also studies the regularity of the movement of the roll box of
the saw gin when lifting it with the help of a pneumatic drive. The kinematics
of the roll box movement was determined through experimental studies. Knowing the equation of motion, using the second-order Lagrange equation, the
regularity of the change in the lifting force of the roll box was
determined. Here the system is closed, its degree of freedom is equal to one.
The angle of rotation of the roll box is taken as a generalized coordinate.
Numerical results were obtained using the Matlab software environment. The
theoretical analysis and graphs for determining the lifting force of the roll
box are presented. To study the kinematics of lifting the roll box, a method
and a test bench have been developed. According to him, when the roll box was
raised, its movement was recorded on video, the image was processed using the
After Effect and CorelDraw programs, and the movement of the rod attachment point
to the roll box was determined. And also the equation for changing the angle of
rotation of the roll box is determined using the Matlab Curve Fiting program.