SU1243649A2 - Apparatus for automatic regulation of loading combine grain harvester - Google Patents

Description

FIELD: agriculture. responsible for mechanical engineering, and it is about the knowledge of automating the technological processes of cleaning.

The purpose of the invention is to improve the accuracy of controlling the loading of the combine harvester.

The drawing shows the functional diagram of the device.

The device contains an angular velocity sensor 1 of the threshing drum whose vortex through delay unit 2, a binary counter 3 and a decoder 4 deadband boundaries are connected to a switching unit 5, outputs connected to the S-inputs of control flip-flops 6 and 7, and their outputs through block 9 code transfer is connected to the corresponding inputs of the trigger 10 and 11, the outputs of which through the corresponding elements 12 and 13 and are connected to the electrohydraulic amplifier 14 of the speed variator of the combine, and the output of the pulse generator 15 is connected En with the clock input of the binary counter 3, the output of the sensor 1 is connected to the control input of the code transfer unit 9, the gap sensor 16 in the prebar through the element 17 And the synchronization node 18 is connected to the clock input of the additional binary counter 19, the input of which is connected with the output of the block 2 delay, the output of the sensor 20 of the translational speed of the combine through the trigger 21 is connected to the second input of the element 13 and the R- input of the trigger 22 whose clock input is connected to the input of the block 2 of the delay, the D input of the trigger 22 is connected to the level of logic one s, and the output of the additional binary counter 19 through 23 prebrazovatel codes coupled to the second input of the decoder 4 borders deadband. ,

The device works as follows.

The binary counter 3 periodically set to zero by the pulses of the angular velocity sensor 1 of the threshing drum through the delay unit 2 is filled with the pulses of the generator 15. An additional counter 19 periodically with the frequency F of the sensor 1 records a number proportional to the product of the gap in predrumming d and translational V speed combine. The output of the trigger 22 takes on a single state with the arrival of the pulse of the sensor 1 at its clock input, since its D input is connected to the positive terminal of the power source — the level of a logical unit. After that, the short-term pulse F of the transmitter 20 of the forward speed of the combine converts the trigger 21 into one

the main state, and the trigger 22 is set to the zero state on its R input. With the arrival of the next pulse F, the flip-flop 21 is set to the zero state, and the bo5 circuit is rotated to the initial state to

the arrival of the next pulse F,. Thus, at the output of trigger 21, a pulse is formed, the duration of which is equal to the period that is

0 in inverse relationship with the frequency P „. Element 17 I ensures that this pulse is filled with the frequency P .. So, in the counter 3 periodically accumulates a number proportional to the period.

5 vras; yen of threshing drum F, a. In counter 19, synchronously with cq counter 3, a number code is formed, proportional to the ratio of frequencies, which is converted by node 23 into the codes of village codes corresponding to the boundary values of the device's dead zone. It is assumed that., And F v g the frequency of the generator 15. The decoder 4. The boundaries of the zone of inactivity fixes the equality of the codes at its inputs and through the switching unit 5 affects the control node 8. Depending on the ratio of the frequency of the generator 15 and sensors 1, 16, 20, there are three possible combinations of code combinations at the outputs f of the flip-flops 6 and 7, two of which 0.0 and 1.1 are used to control the electro-hydraulic amplifier 14 to increase or decrease the translational speed of the combine. Triggers 10 and 11 provide persistent storage of periodically updated code at the outputs of triggers 6 and 7, which is converted by elements 12 and

 13 And at the voltage on one of the inputs of the electro-hydraulic amplifier 14. This causes a change in the forward speed of the combine, and, consequently, the feed of the mass, the load of the hammer: the rotary drum and the angular speed of the threshing drum. will enter the insensitive zone of the device. With this output code

five

0

S

6 and 7 flip-flops, as well as 10 and 11 flip-flops, change (by 0.1), the voltage at one of the outputs of elements 12 and 13 disappears, and the spool of the electro-hydraulic amplifier 14 is set to the neutral position at which the speed of the combine is constant.

Editor T. Parfenova

Compiled by S.Zarutsky

Tehred L.Oleynik - Proofreader T.Kalb

3729/1

 Circulation 679 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, - Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4.

Claims (1)

DEVICE OF AUTOMATIC REGULATION OF LOADING OF THE GRAIN COMBINE St. No. 745417 _? characterized in that, in order to increase the accuracy of regulation, it is equipped with a clearance sensor in the pre-drum and translational speed of the combine, an additional binary counter, a code converter and a synchronization unit with two triggers and an And element, while the output of the threshing drum angular velocity sensor is connected to the control input code transfer block, by the clock input of the first trigger of the synchronization node and through the delay block with the inputs of zeroing the binary counter, additional binary counter, first and second wow triggers. of the control unit, the output of the pre-drum clearance sensor is connected through the And element of the synchronization unit to the clock input of an additional binary counter, the output of which is connected to the switching unit, the outputs of which are in turn connected to the inputs of the first and second through a code converter and a decoder of the boundaries of the dead zone triggers of the control unit, and the output of the combine translational speed sensor is connected to the clock input of the second trigger of the synchronization unit, the output of which is connected to the second input of the And and R-input element the house of the first trigger of the synchronization node, the D-input of which is connected to the logic unit level, and the output is connected to the D-input of the second trigger of the synchronization node, the output of the pulse generator is connected to the clock input of the binary counter, the output of which is connected to the second input of the dead band decoder, the outputs of the first and second triggers of the control node are connected to the corresponding inputs of the third and fourth triggers of this node by means of a code transfer unit, while the outputs of the third and fourth three Gere node control through respective AND gates are connected to the inputs of the electrohydraulic amplifier harvester speed variator. SU „„ 1243649 A 2 “1243649