SU1485028A1 - Device for monitoring limit load of railroad cars - Google Patents

Description

The invention relates to the field of weighing equipment. The aim of the invention is to improve the accuracy of control and enhanced functionality. Using the zero setting unit 4 in the memory unit 33 of the weight measuring unit 1, the weight of the load handling equipment is remembered, the unit specifies the details of the car, and the unit 13, the code for the allowable overload of the car. The weights of the lifted loads are summed by the adder, the value of the load rate is subtracted from the sum in the subtraction unit, and the difference is fed to the comparison unit 9, where it is compared with the allowable overload. 5 il.

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1485028

1485028

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The invention relates to weighing technology.

The purpose of the invention is to improve the accuracy of control and expansion of functionality.

FIG. 1 shows a functional block diagram of a device for monitoring the maximum load of railway cars; in fig. 2 - block diagram of the weighing unit; in fig. 3 - block diagram of the task of setting the load rate; in fig. 4 is a block diagram of the summation block; in fig. 5 - block diagram of the comparison unit.

The device contains a weighing unit 1; block 2 summation, indicator 3 weights lifted load, block 4 installation zero, block 5 start measuring, block 6 alarm loading, block 7 cancel loading, block 8 task load rate, block 9 comparison, indicator 10 total weight, block 11 communication with the station computer (not shown), block 12 of the end of loading, unit 13 allowable overload of the car, indicator 14 possible overload of the car, block 15 alert about possible overload of the car, block 16 off loader and block 17 control the movement of cars.

The weighing unit 1 contains a primary converter 18, an analog-to-digital converter 19, AND 20 and 21 logic circuits, a clock generator 22, an extremum detection unit 23, a reversible counter 24, logical AND 25 circuits, an adder 26, a pulse counter 27, an inverter 28, logic And 29, divider 30, logic And 31, block 32 subtraction and block 33 memory.

Unit 8 task load norms (Fig. 3) contains the master 34 of the details of the car, for example the number of the car, the indicator 35 of the details and the node 36 determining the rate of loading.

The summation unit 2 (FIG. 4) comprises a memory unit 37, an adder 38, a subtraction unit 39, logic circuits 40, 41, and a subtraction unit 42.

Block 9 comparison (Fig. 5) contains the block 43 subtraction, the element 44 comparison, logic And 45 and the inverter 46.

The device works as follows.

Before starting work on the loading of goods or in the process of work when changing attachment lifting equipment is determined by the mass handling equipment. For this, the driver of the loader delivers a zero setting signal from block 4. The load signal from the primary converter 18 passes through analog-digital converter 19 and is gated on logic circuits AND 20 by signals of the clock generator 22 passing through the logic circuit 21. The sequence of load signals goes to the block 23 definitions

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the extremum and when the first extremum is found, the AND 25 logic circuits are opened, passing a sequence of signals to the adder 26 and the counter 27 pulses. At the same time, the reversible counter 24 subtracts one from the previously specified value of the number of extremes (it must be equal to or a multiple of 4). After finding the required number of extremes, the value of the reversible counter 24 becomes equal to zero, the AND 25 and 21 logic circuits are simultaneously locked and the AND 29 logic circuits open, receiving a single signal from the inverter 28, passing the signals of the adder 26 and the pulse counter 27 to a divider 30, which calculates the value mass of the load gripping equipment. This value through the logic circuit 31 and is stored in the memory block 33. At the same time, indicator 3 shows a zero value.

Then, when loading a new car, the driver enters from the setter 34 requisites va-. rut requisites of the loaded wagon, controlling the correctness of input on the indicator 35, and from the control unit 13 for allowable overload - the code for allowable overload, indicated on the car body. According to the entered details node 36 determining the rate of loading determines the allowable load capacity of the car.

As the details you can use the car number. In the seven-digit number of the car, the first sign determines the type of car, and the second sign determines the main character and main technical characteristics, including carrying capacity.

So, for example, for a gondola (the first sign is a number 2), the numbers 2-6 in the second sign mean that it is a four-axle gondola ^ with a lifting capacity of 63 tons, the digit 7 is a four-axle gondola with a carrying capacity of 62 tons, and the figure 8 is a six-axle gondola with a carrying capacity of 94 tons.

When you enter the details of the car from the setting device 34, the memory block 37 is reset to remember the total mass of the cargo loaded into the car.

Then, in accordance with the technology of loading and unloading operations, cargo is snapped up and the driver, by activating the lifting mechanism, separates the cargo from the ground. At the same time, the signal of the beginning of the measurement is received and the weight measuring unit 2, using the algorithm similar to that described for determining the mass of the attachment, determines the value of the weight of the load on the loading body of the loader. This value is displayed on the indicator 3 of the weight of the lifted load and is fed to the block 2 summation.

The value of the weight of the lifted load is summed by the adder 38 with the contents of the memory block 37, where the weight value of the load already loaded into the car is stored. Then from the amount received is subtracted at subtraction unit 42, the value of the loading rate of the car arriving at the second input of unit 42 deduction 1485028

Tania from node 36 determining the rate of loading.

The difference between the values of the total mass of the cargo loaded into the car and the loading rate of the car enters the comparison unit 9. The received signal is corrected by the subtraction unit 43, the second input of which receives the value of the allowable overload, and then the resounding signal is fed to the comparison element 44, generating a single signal when the positive signal is received. In the case of a car overload, the comparison element 44 generates a single signal, and the overload value through logic circuits 45 is fed to a possible overload indicator 14, and the overload warning block 15 and the loader off block 16 are triggered.

If the overload of the car when loading this portion of the load does not occur, i.e., the comparison element 44 receives a negative signal, then the block 2 summation receives a signal of loading the load into the car and the loader driver loads this portion of the load into the car. In this case, the signal from the adder 38 through the logic circuit 40 is passed to the memory block 37 and is memorized by it, and is also displayed on the indicator 10 of the total weight of the loaded load and enters the communication block 11 from the station computer.

If the load-carrying body of the loader is a portion of the cargo that must be unloaded from the car, the driver sends a signal to cancel the loading, which is fed to the block 2 summation. The signal from the weighing unit 1 passes through the logic circuit 41 and the block 39 subtraction, the second input of which receives the signal of the block 37 of the memory. The difference between the total weight of the load loaded into the car and the weight of the lifted load is stored in memory block 37, displayed on indicator 10 and fed to communication block 11 from the station computer, and also entered in block 9 of comparison.

In block 9 comparison, a positive signal from block 39 subtraction, passing through the inverter 46, locks the logic circuit 45, thereby disabling the indicator 14 possible overload, block 15 warning of possible overload and block 16 off bootloader, if they worked when this load was taken by the loader . Then the loader driver unloads this portion of the cargo from the car. At this cycle of loading (unloading) of the cargo in the car ends.

When the car is loaded (it is not necessary to fully use its capacity), the driver sends a signal to the car’s loading from block 12. This signal automatically transmits information about the loaded car (its details, weight value loaded in the car) to the station computer by communication unit 11 and the movement of the wagons is controlled, with the result that the next car becomes the loading and the wagon loading cycle is repeated from the beginning.

Claims (1)

Claim A device for controlling the maximum load of railway cars, containing a weight measuring unit, the output of which is connected to the weight indicator of the lifted load and the first input of the summation unit, to the second and third inputs of which the outputs of the loading alarm unit and the load rate setting unit are connected, respectively, to the first, second and third the first and second inputs of the comparison unit and the total weight indicator are connected to the outputs of the summation unit, respectively, and the unit is notified to the first output of the comparison unit about possible overload, characterized in that, in order to improve the accuracy of control and expand functionality, a measurement start block, load cancellation block, load end block, communication block, loader disconnect unit, car movement control unit, Permissible overload unit are entered into it the car, the zero setting block and the indicator of a possible overload of the car, the output of the zero setting block and the first output of the measuring start block are connected to the inputs of the weighing unit, the second output of the measuring start block The unit is connected to the inputs of the load signaling unit and the load cancellation unit, the output of which is connected to the fourth input of the summation unit, the output unit of the allowable overload of the car is connected to the third input of the comparison unit, the second and third outputs of which are connected respectively to the indicator of possible overload of the car and the loader disconnecting unit, and the outputs of the block end of loading are connected to the input of the control unit for the movement of cars and the first input of the communication unit, the other inputs of which are connected to the output of the task block n Forms of loading and the fourth output of the summation block. 1485028 Fi.g.1 Fi, GZ Ί at 17 Fi 5