SU991460A1 - Device for checking machine working member rotation - Google Patents

Description

The invention relates to instrument making and can be applied to measure the speed of rotation of moving objects, in particular, to determine the speed of rotation of moving spindles of cotton harvesting machines.

It is known a device dp of controlling the speed of rotation by measuring the speed of rotation with a frequency sensor, comprising the elements I, a counter, a pulse generator and a block of switches 1.

The disadvantage of this device is that the measurement is performed for objects with a fixed axis of rotation. In cotton harvesting machines. Spinning spindles move around the circumference of the drum. It is desirable to determine the average rotation speed of each spindle or the percentage of non-rotating spindles (i.e., their number).

The closest in technical essence to the invention is a device for monitoring the rotation of the working parts of a machine, comprising a first inductive sensor, the output of which is connected via an amplifier to the input of the first counter 23.

The disadvantage of this device is the inability to control the rotation of the moving working bodies, which narrows the field of application of the device.

The aim of the invention is to expand the field of application of the device.

This goal is achieved in that the device for controlling the rotation 10 of the working parts of the machine, containing the first inductive sensor, the output of which through an amplifier is connected to the input of the first counter, has a controllable pulse generator, a second counter, a code comparison unit, a recording unit and the second inductive sensor, the output of which is through a series-connected controlled pulse generator and the second

20, the counter is connected to the first input of the code comparison unit, the second input of which is connected to the output of the first counter, the output of the code comparison unit is connected to the input of the registration unit.

25

The design and layout of the device is provided for using it to control the rotation of the swaying spindle of the cotton picker tire.

FIG. 1 shows a functional diagram of the device; in fig. 2a and 2b are designs of a drum and a spindle of a cotton harvesting machine, respectively. .

The device contains a drum 1 cotton harvester, around which spindles 2, holders 3 and 4 of drum 1, V-belts 5, permanent magnets 6, bracket 7, first inductive sensor 8, amplifier 9, first counter 10, block 11 code comparisons, a second inductive sensor 12, a pulse generator 13 controlled, a second counter 14, and a recording unit 15.

The operation of the device is as follows.

The spindle 2, moving and rotating, passes by the first inductive sensor 8. The rotation of the spindles 2 is produced by the V-belts 5. The rotation signals of the spindle 2 from the four permanent magnets b are transmitted to the upper inductive sensor 8. Moreover, the length of the first inductive sensor 8 is equal to the length circle- heads of spindle 2, i.e. With maximum spindle rotation, four impulses from the first inductive sensor 8 can be received; with minimum rotation or non-rotation of spindle 2, one impulse.

The second inductive sensor 12 generates one pulse for each pass spindle 2. A pulse from it is fed to a controlled pulse generator, which produces four pulses per pulse of the second inductive sensor 12. The pulses from the controlled generator 13 pulses accumulate in the second counter 14, running yuschyu Spindle rotation control function. As a result, the maximum possible number of pulses is accumulated in this counter 14, corresponding to the full rotation of all the spindles.

The pulses from the counter 10 and 14 arrive at the code comparison unit 11, the magnitude of the difference in the number of pulses is indicated by the registration unit 15.

If any of the spindles does not rotate, or rotates slowly, then the number of pulses from the first counter 10 will be less than that of the second counter 14. As a result, the difference in the number of pulses from the code comparison unit 11 indicates a decrease in the performance of the cotton spindles.

0 in unit 15 for registering the difference in the number of pulses is converted to a percentage reduction in the operation of the spindles. This allows the cotton harvester driver to follow the changes in speed and determine the percentage of non-rotating spindles.

The use of the proposed device allows to improve the quality

collection of raw cotton, increase production, water content of the cotton picker.

Claims (2)

Formula of Invention 5 A device for controlling the rotation of the working parts of a machine, comprising a first inductive sensor, the output of which through an amplifier is connected to the input of the first counter, characterized in that, in order to expand the field of application of the device, a controlled pulse generator, a second counter, a block, are entered into it codes, the registration unit and the second inductive sensor output through a serially connected controlled impulse generator and the second counter is connected to the first input of the code comparison unit, the second input of which is connected to 40 to the output of the first counter, the output of the code comparison unit is connected to the input of the registration unit. Sources of information taken into account in the examination 45 i. USSR Author's Certificate No. 591769, cl. G 0.1 P 3/46, G 08 B 1/08, 1976. 2. Malov B.C., Kupershmidt Ya.I. Telemetry (industrial 5Q application). M., Energie, 1975, p. 161-164 (prototype). / f n to / Fi & 1 Флfг.Z