SU1418612A1 - Method and apparatus for checking capacity of cotton processing machine - Google Patents

Abstract

The invention relates to textiles, industrial sawing, in particular to the processing of raw cotton. In order to increase the accuracy of monitoring machine performance using load sensors on the main drive of the machine, load and frequency of rotation of the feed rollers, two dividers, adder and indicator, determine the degree of wear of the working parts of the machine as the ratio of the load on the main drive to the maximum frequency of rotation of the feed rollers. . The load of the machine is found as a ratio of the load on the main drive of the machine to the additionally measured load value on the drive of the roll rollers. The productivity of a machine is determined by calculating the difference between the degree of wear of its working bodies. 2 sec. f-ly, 1 ill. (Oh (L

Description

oo

SP) HCHE

Ichuredeino relates to the textile industry, in particular to the processing of cotton, and is predominantly automatic control of the primary l; the strength of the cotton mantle, saw and roller; gins (separator of long cotton thread; fresh fiber {a from seed) and linters I (separators of short cotton I fiber from seeds).

The purpose of the invention is to improve the accuracy of the performance control of a cotton picker 1a6 rolling machine

The iia drawing shows a block diagram of a device that implements a method for monitoring the performance of a cotton processing machine.

The device contains sensor 1 and 2, respectively, the load on the main drive of the machine and the frequency of rotation of the feed rollers, the first dividers 3, the adder 4, the indicator 5, the sensor 6 loads the drive of the feed rollers and the second divider 7 connected by the first input to the sensor 1 of the load on the main the drive, the second input - with the sensor 6 - the load on the drive of the feed rollers, and the output - with the second input of the adder 4, the output of which is connected to the indicator 5, and the n-first input - with the output of the divider 3, the first and second inputs of which are connected to the sensors 1 and 2 respectively manual ultrasonic inspection at Glan-wheel drive car and the feed roll speed.

A device that implements the proposed method works as follows.

The cotton processing machine as an object of automatic control can be represented by a combination of two dynamic links with its transfer functions -P, and Pj, the algebraic sum of which constitutes the total transfer function of machines P, characterizing its productivity.

R Ra and. and.

one

50

de P -j-f is the transfer function of the state of replaceable working bodies (the degree of wear and tear), defined as the ratio of the load on the main drive of the machine and to the volume flow rate of cotton in pere-

d

20 25 30

five

0

five

half a dozen

P 11

- , because

R,

- b n.

processing (rotational frequency of the pits of the ialik) U, with the P value being the sign of

over time, as the working bodies wear out, it grows, and this leads to a decrease in the processing capacity of the machine;

--- The transfer function of the processing rate, defined as the degree of loading of the processing, maipny calculation, is the ratio of the load on the main drive of the UM machine to the load value pa drive of the feed rollers Ufi, which characterizes the mass consumption of cotton in processing

The values of Р, Р, Р, U, and „, Ug are expressed by the values of stresses directly proportional to the values of the technical parameters. nigal and technological parameters within the chosen power level. Measurements of these parameters are carried out continuously at steady-state quasi-stationary mode, Tooo stationary for small (relative to the period of wear of the working bodies of the mashina) time intervals. The steady state is needed to eliminate errors associated with deviations in the material balance of the cotton processing process, caused by random disturbances both at the input to the process (local change in cotton density or moisture) and at the output (change in fiber output due to an accidental over-consumption or, on the contrary, loosening of cotton in the working area of the machine).

Automatic monitoring of the performance of the cotton processing machine is carried out by continuous measurement of steady-state values of technological parameters by sensors 1 and 6 of the load on the main drive of the machine U c and on the drive of feed rollers Uf, as well as by sensor 2 of the rotation frequency of the feed rollers Uj, calculating in divider 3 degrees the wear of the replaceable working parts of the machine, and in the divider 7 - the degree of loading of the cotton processing machine in the current performance control MauDiHbi, measure the load on the drive pi lev els rollers relative magnitude of the current load on the drive machine glavnp to the value of the measured load on the drive roller pitayupih determined degree of loading of the machine and performance of the machine's cotton kopererabatyvayuschey judged from the difference between the degree of loading and the degree of wear,

2. A device for controlling the performance of cotton digging

Claims (1)

1. A method of controlling the performance of a cotton processing machine, comprising measuring the current load on the main drive of the machine and the frequency of rotation of the feed rollers in steady state processing of cotton, calculate the degree of wear of replaceable working parts as the ratio of the first measured value to the second and determining the productivity of the cotton processing machine, characterized in that, in order to increase the  25 20