SU1422017A1 - Arrangement for metered loading of railway cars - Google Patents

Abstract

The aim of the invention is to improve the metering accuracy by taking into account the amount of concentrate that is in a free fall after giving a signal to terminate the loading of the car. For this, in the device using the load modeling unit 14 connected on one side via analog-digital Converter (AShch1) 16 with an additional analog output instantaneous performance of electromechanical belt scales 5, and on the other hand with a computing unit 3, simulates the intensity of the load on the segment note (/)

Description

14

the conveyor belt 13, starting from the weights 5, as well as on the loading conveyor 10 and the free fall of the concentrate into the wagon 18, and continuously weighing the concentrate that is loaded into the wagon 18 after the appearance of the command at the end of the load . This signal is continuous

enters the computing unit 3, in which it is summed up with the current weight of the loaded car, taken from the digital output of platform scales 17. When the conditions are fulfilled, the command is formed to end the loading of the car 18. 3 sludge.

one

The invention relates to the management of loading rail cars using weighing instruments and is intended, in particular, for the dosed loading of cars with rail concentrate 1B of the mining industry.

The aim of the invention is to improve the accuracy of dosing.

FIG. 1 shows a block diagram of the device; in fig. 2 - functional scheme of the computing unit; in fig. 3 is a functional diagram of a load modeling block on a conveyor belt.

The device comprises a wagon type setting device 1, a block of 2 coefficients, a computing unit 3, a logic control unit 4, electromechanical belt scales 5, a displacement unit movement sensor 6, a control unit 8 for a drive unit for a drive unit 7, a control unit 9 for a drive for loading conveyor 10, wagon position sensor 11, drive conveyor drive control unit 12, load simulation block 14, conveyor belt movement sensor 15, analog-to-digital converter 16, platform scale 17 with digital output and loadable wagons 18.

Computing unit 3 (Fig. 2) contains a combinational adder 19, one inputs of which through block 20: the nuns are connected to the LAN inputs of block 3, and its second inputs form the inputs of block 3. The codes of the adder 19 are connected to one of the inputs of the circuit; , the second inputs of which are connected to the output of the encoder 22, the inputs of which form the input buses

0

Q

0

five

0

five

The car type of the computing unit 3, while the outputs Equals and More of the comparison circuit 21 are connected through the OR element 23 to the same input of the AND 24 element, the second input of which forms the input IV of the cone of the computing unit 3, and the output is connected to the input of the pulse former 25, the output of which forms output bus Reverse computing unit 3.

The load modeling block 14 (Fig. 3b) contains ri sequence registers 26.1-26. P (n is the binary code of the instantaneous load on the conveyor belt), the counting inputs of which are connected to the corresponding information inputs of the block 14, and the outputs the inputs of accumulating adder 27. The shift input of block 14 is connected to the input of pulse generator 28, the installation input to O of accumulating adder 27 and one input of the OR element 29, the second input of which is connected to the pulse output of the generator associated with direct dynamics cheskim.vhodom recording accumulator 27, whose outputs form the outputs of block 14 PM.

Each register 26 of block 14 consists of two registers 30 and 31 connected in series through AND 32, and the second register 31 is provided with a ring feedback connection through AND 33 (the output of the high-priority trigger of register 31 is connected through input And 33 to the input trigger his younger bit).

The second inputs of the elements And 32 and 33 of all registers 26.1-26.P are combined and connected to the potential output

31D

generator 28 pulses, with all the first elements And 32.1-32.P second input is made inverse, and the outputs of the elements 32 and 33 in each register 26 are connected by OR,

The shift tires of all the first registers 30.1-30.p are connected to the shift input of block 14, and the shift buses of all the second registers 31.1-31.P are connected to the output of the element OR 29.

The device works as follows.

Before the start of loading, the operator on the m switches of the setter 1 of the type of cars collects the ciphers of the types of cars in the sequence of their placement in the train, starting with the head car. On the i-th output bus of the type of car setter 1, there is a single signal that enters the computing unit 3 at the corresponding i-th input of the type of car, as well as the encoder 22, where it is converted into a binary code corresponding to the specified value of the car weight (gross this type.

At the same time, a single signal from the i-th output tire. The type of car of the setting device 1 of the type of cars enters block 2 of coefficients and generates binary codes on its output tires K1 and K2.

defining

coefficient K1 „- Ug

the amount of concentrate to be placed in one cone and the coefficient K2 g determining the length

schaga (distance between adjacent cones). The binary codes of the coefficients K1 and K2 come in logical block 4

After entering the data on the types of cars of the train into the device, the operator uses the remotely controlled traction unit to deliver the train to the loading route. Further operation of the device until the end of the loading of the last car occurs automatically.

The head car 18 is pulled under the starting point of loading and acts on the car position sensor 11 (for example, a photo relay), as a result of which the reversing feed conveyor 10 and the inclined feed conveyor 13 are sequentially started — the reversing conveyor 10 runs in the Backward direction, since in the initial state the trigger on

5 0 5

ABOUT

five

0

five

0

five

7

boards in logic block 4

It is in the zero state and from its inverse output a single signal is fed to the output bus Back of the logic unit 4, which is connected with the same input of the control unit 9 for the drive of the conveyor 10.

At the same time, the signal from the output 11 of the car position enters one of the inputs of the Stop unit 8 of the drive train control unit 7 and causes it to stop. The head car takes its initial position under the loading conveyor 10, through which the concentrate enters the tail end of the car, forming the first cone.

When the concentrate flows along the conveyor 13 and further along the reversing conveyor 10 into the loaded wagon 18, the belt scales 5 produce pulses at their pulse output, the frequency of which is proportional to the flow rate, and at the analog output a signal proportional to the instantaneous performance of the conveyor.

The weight pulses from the pulse output of the belt scales 5 are fed to the input. The weight of logic unit 4, at the permission input of which there is a resolving single signal, and the binary code of the division factor K1 is fed to the control buses. At the output of the logical key 4, each K1-th of the weight pulses received at its input appears, indicating 15 the end of the filling of the loading cone. This provides rough loading of the first three cones. During loading of the first three cones at the digital output of platform scales 17 there is a binary code, which, however, cannot characterize the process of loading the car, since the loaded car is not yet fully on the platform, while the traction unit or the adjacent the loaded car has not yet descended from the platform. Therefore, when loading the first three cones, the computing unit 3 is blocked by the zero signal present on the output bus IV cone. logical block 4. This eliminates the possible false formation of the Reverse team as a result of sharp dynamic loads at the moments of arrival (departure) of the car on the scales platform.

After the filling of the first cone, the signals removed from the output buses Forward and Back of logic unit 4 are reversed. The loading conveyor 10 is reversed in the Forward direction and the concentrate flows to the head of the vagan,

Upon completion of loading the second cone through the output bus, the Pitch of the logic unit 4 into the control unit 8 of the drive of the traction unit 7 has a command to move the Forward direction. The composition is drawn in the U1 | azan direction. The traveling pulses produced by the sensor 6 linear displacements of the Tg 7 aggregate are input to the Motion of the logic unit 4.

After pulling the loading wagon one step onto the output bus, the Stop of logic unit 4 connected with the same input of the control unit 8 by the drive of the traction unit 7 J receives a signal and the train stops, thus loading the third cone.

The appearance of the third weight impulse again leads to the formation of the command of the traction assembly 7 to move Forward, and after pulling the loaded car into the next step, the train again stops and the loading of the last fourth cone begins.

After pulling the train in two steps, the loaded head car is completely (it is installed on the weighing platform. Further loading of the car up to a given dose occurs with its continuous weighing and taking into account the amount of concentrate that still goes into the car after the team’s actions at the end of loading, which ensures accurate loading of the car to a given dose.

The operation of the computing unit 3 when loading the fourth cone is as follows.

The inputs of the computing unit 3 with the digital output of the platform scales 17 receives the binary code of the current weight of the loaded car

(), and the inputs uG from the output of the –blocking unit 7, include 14 load simulation simulations — a binary unit and the composition is drawn by a code proportional to the weight of the concentrate (& G)

forward until the second car reaches the starting point of the load (the moment of operation of the sensor I1 polo

13 car after the appearance of the team on

the end of the load, the binary code being given in block 20 multiplying to the dimension of the binary code G-, i.e. to the price of a bit of information at the digital output of platform scales 17. The multiplication unit 20 performs the function K, where K g is the proportionality coefficient, the value of which

is determined experimentally and depends on the pulse frequency of the sensor 15 for moving the conveyor belt and on the difference between the analog-digital-Vo converter 16. After reduction to one dimension, the binary codes G and uG are summed in the combiner adder 19 and the result (+ uG) is continuously compared in the diagram 21 comparisons

with the binary code of a given weight of the car (C, hell), coming from the output cipher.

rator 22.

Loading the fourth cone product114

It is pressed until the gross weight of the car, taking into account the weight of the TO concentrate, does not reach the specified value, i.e. until the condition AGiG Stack, a.

When this condition is fulfilled, a single signal appears at the output Equals (More) of the comparison circuit 21, which, through the elements OR 23 and 24, starts the driver 25

momentum. The last one makes

impulse signal that goes to the output bus Reverse computing unit 3. Logic unit 4 receives a signal that returns it to its original state, which leads to reversing of the loading conveyor 10 in the Back direction and, therefore, switching the concentrate flow to the next car. .

At the same time by the same signal (its falling edge), arriving at the tak- tovy input of the t-channel ring distributor of the unit 1 of the Vago- type; new from its first digit shifts

in the second. At the same time, on the output tires, the type of car of the setting device 1 receives a cipher of the type of the second car. By the same signal, which entered the input Forward of the control unit 8 for the drive of the traction unit 7, the traction unit turns on and the composition is drawn

forward until the second car reaches the starting point of loading (the moment the car position sensor I1 is loaded). The agon loading cycle is repeated.

Signal through the output bus. The stop of the setting device 1 of the car type enters the same input of the drive control unit 12 of the feeding conveyor 13, as a result of which the conveyor 13 and the reversing conveyor 10 are turned off. Download the composition is over.

Claims (1)

Invention Formula The control unit of the dosed loading of railway cars, containing electromechanical conveyor scales installed on the feed conveyor, platform scales with digital output, unit of the car type, connected to the coefficient setting unit, control units of the feed and loading conveyors, control unit of the train movement unit of the cars, the displacement sensor of the traction unit, the position sensor of the car and the logic control unit, the inputs of which are connected respectively to the outputs of the sensor and the traction unit and the coefficient setting unit, and outputs - to the inputs of the control unit the traction unit and the control unit zagruzochnm conveyor control output zadat A wagon type switch is connected to one input of the control unit of the feed conveyor, the other input of which, as well as the input of the loading conveyor control unit and the input of the control unit of the traction unit, is connected to the output of the car position sensor, characterized in that it includes an analog-to-digital converter, a load simulation unit, and a computing unit connected by one input to a digital output of a platform scale, and an electromechanical conveyor scale is equipped with an additional Analog output with instant performance, connected via serially connected analog-to-digital converter and load simulation unit with the second input of the computing unit, the third input of which is connected to the output of the unit of the car type, and the fourth input - with the output of the logic control unit; the output of the computing unit is connected to the inputs of the logic control unit, the control unit of the traction unit and the unit type cars, the second input of the load modeling block on the conveyor belt is connected to the conveyor belt displacement sensor. FIG. 2 „Shift at) Part of the free fall wp Fig..z