SU814835A1 - Device for automatic control of plant for loading freight cars with metered-out quantities of loose cargo - Google Patents

Description

by changing its mass, the driving characteristics of cars, the presence of elasticities and backlash in coupling devices, etc., the actual speed of movement of the cars is significantly different from the given one.

The purpose of the invention is to increase productivity by eliminating disruptions in the loading process from variable lag while controlling the movement of wagons.

The goal is achieved by the fact that the device is equipped with a wagon travel sensor and a comparison unit, the inputs of which are connected to the specified sensor and vehicle type setting device, and the output connected to another input of the correction unit whose third input is connected to the output of the control unit.

In addition, the device is equipped with a capacity determination unit connected between the output of the control unit and the input of the xfrexchai unit.

In the drawing, a block diagram of an automatic control device for loading cars with metered portions of bulk cargo is shown.

The device comprises a wagon type setting device 1, connected to inputs of control unit 2 and correction unit 3. To the inputs of control unit 2, TaioKe sensors 4 and 5 of the control set of the portion (for example, a weighing scale) of dosing capacities are connected. 6 and 7, and to its output - the actuator 8 of the distribution mechanism 9 and the correction unit 3. The output of the correction unit 3 is also connected to the output of the capacity determining unit 1O and the comparison unit 11, and the inputs of the latter are connected to the car type setting device 1 and the displacement path sensor 12, made in the form of a wheel running on the carriage upper circle, connected to the output of the correction unit 3 the control unit 13 which is connected to the drive 14 of the mechanism 15 for moving the cars coupled to the loaded cars 16. The dosing tanks 6 and 7 are equipped with valves 17 and 18. The proposed mechanism is also equipped with a loading device Volume 1 and the conveyor 20 supplying the load.

When the installation for loading wagons with dosed portions of bulk cargo is in operation, the automatic control device agrees the rhythm of the wagons under the loading device, taking into account the delay in the speed working system with the random rhythm of the set of batches.

The device works as follows

From setpoint 1, in block 2 of control and in block 3 of correction, data on the size of the portion Q and the length L of loaded wagons are entered, respectively. Unit 2 through the drive 8 sets the distribution mechanism to the position corresponding to the filling of the dosing tank 6, and the conveyor 20 starts to give it a bulk load until the mass signal from the batch set control sensor 4 in block 2 is equal to the batch size signal supplied from the setpoint 1. With equal signals in the drive. 8, a command is issued to switch the flow of bulk cargo into the dosing tank 7 for the next set of proportions (the degree of filling of the tank 7 is monitored by the batch set control sensor 5). The shutter 17 opens and the portion 6 collected in the dosing tank 6 is discharged into the loading device 19, from which it is fed into the next car.

The loaded cars 16 by means of the drive 14 of the mechanism 15 for moving the cars move at such a speed that by the end of the loading of, for example, the n-th car, the portion of the next (j +1) car is completed in the dosing tank. The end of the car loading is carried out at a point known for each car, separated, for example, from the front wall of the car, at a distance equal to the body length of the car LuJ-During the car movement, signals about the actual car travel length under the loading device removed from the sensor output 12 the paths of movement of the car, and the signals of a given length of the loaded car 1; and a predetermined distance to the end of loading of the next car LH (taken from the output of the unit 1 of the car type, are fed to the - comparison block 11.) From the output of the comparison block 11, a signal proportional to the distance that is left until now the end of loading (} +1) of the car

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Claims (2)

at the time of completion of the preparation of a regular dose, simultaneously with the command for switching the distribution mechanism 9, block 2 instructs the calculation in block 3 of the correction of the given speed of movement of the composition according to the dependence where C | “SOTS% -L” signal, proportional to the nominal capacity of the installation. The obtained speed value supplies, with to the control unit 13, an appropriate controlling effect on the drive 14 of the carriage movement mechanism 15. This velocity value is maintained until the moment when the next dose is completed, when a new velocity value is determined. The cycle of operation of the device is repeated further. To improve the accuracy of the signal, the nominal output signal Qj, in the correction unit 3, the output unit G is given a signal GJ, which is proportional to the average capacity of the bulk load to the metering bins and can generally differ from ... Average n performance is determined by signals the amount of mass entering through block 2 to block 10 (for example, by differentiating and averaging the incoming signal). The essence of the automatic control of the installation for loading wagons is as follows. After ca (the drive of the raid for the j-ro car, it starts loading into this car. Continuously move the car under the loading device. The carriage for (j + l) -ro car should be prepared at the moment when the loading device there is some point 21 located at a distance from the j-ro wagon front side (for example, this can be the j-ro car body length). The need to prepare this batch before submitting the next car for loading is due to weighing and reloading loading device. However, in fact, the car can move not by the length Im-i, the length iftl, the moment of the pump; the distribution mechanism calculates the speed, based on the following considerations: Since the mass preparation time Qj for., the CJ productivity will be Q, then the speed the composition should be equal to the ratio of the path of movement from the point of the actual position of the car under the loading device to the point 22, at which a given station will be prepared for the (+2) -th car, to the set time of this portion and tJH-j) i.e. V Due to this control mode, the actual movement of the composition is taken into account. Indeed, if the carriage is somewhat delayed in its movement, then this corresponds to a decrease in Lftj and, as a consequence, an increase in the travel speed and vice versa. Claim 1. An automatic device control unit for loading wagons with metered portions of bulk cargo, comprising a wagon type adjuster connected to a correction unit and one of the control unit inputs, the other inputs of which are connected to the set portion sensors, and the output connected to the distribution mechanism drive , and a regulating unit, the input of which is connected to the output of the correction unit, and the output - to the drive of the mechanism for moving the carriages, characterized in that, in order to increase productivity by excluding tim failures process of loading on the variable lag .If control movement of cars, it is provided with a sensor path of travel. car, and the comparison unit, the inputs of which are connected to the specified sensor and unit type of the car, and the output is connected to another input of the power plant, the third input of which is connected to the output of the control unit. 2. The device according to claim 1, of which there are. that it is equipped with a performance unit connected between the control output and the input of the correction unit. Sources of information taken into account during the examination 1. USSR author's certificate No. 5075О4, cl. B 65 Q 67 / AO, 20.11.74. 2. Author's testimony of the USSR according to application no. 2503О45 / 11, cl. B 65 G 67/22, O5.07.77 (prototype).