SU994926A1 - Device for weighing moving rolling stock on the axis-by-axis basis - Google Patents

Description

The invention relates to weighing technology, and more specifically to devices for weighing vehicles in motion.

Weights are known for weighing coupled cars in motion, consisting of a load-receiving device with load-bearing sensors, track signals and a recording device.

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The disadvantage of these scales is that they can be used only for a small number of types of cars, since it is not possible to design a universal receiving device for various types of railway carriages.

The closest to the invention according to the technical essence is a device for I-POSE weighing of railway rolling stock, containing a weighing platform with load sensors, track warning devices and a recording device with scaling and zero setting units, signal processing and indication 2.

A disadvantage of the known device is that the results

the weighting depends on the direction of movement ..

The systematic component of the error caused by this phenomenon reaches 40% of the basic error.

This phenomenon is explained by the fact that the cargo intake device, the cars and the access railway line form a unified power and Ki10 nematic system. This system has a number of imperfections caused by the characteristics of the connection of the trolley to the car - the unevenness of the track, the ratio of the rigidity of the load receiving device and the railway track, the lack of a static definability of the system, and a number of Other factors.

The combination of these factors

20 leads to the redistribution of loads on the wheel sets, and this redistribution depends on whether the car is located on one or the other. guy side from the cargo intake device.

Claims (2)

The aim of the invention is to improve accuracy by eliminating ambiguity when changing the direction of movement. The goal is achieved by the fact that two correction nodes are introduced into the device, three switching elements and a motion direction analyzer, the inputs of both correction nodes and the input of the second switching element are connected to load sensors, the outputs of the first and second correction nodes are connected respectively to the inputs of the first and third switching elements , the outputs of all the switching elements are connected to the input of the block for scaling and setting the recording instrument, and the control inputs of all the switching devices x elements of analyzer connected to the outputs of the direction of movement, koto cerned inputs connected with travel alarms. . The drawing shows the functional diagram of the device. The load-receiving platform 1 relies on force-measuring sensors 2 which are connected to the inputs of the scale correction and indication nodes 3 when the platform 1 is unloaded with the input of the switching element 4. The outputs of the correction 3 nodes are connected to the inputs of the switching elements 5, the outputs of which are connected to the inputs of the scaling block b and installation zero, the output of which is connected to the block 7 signal processing. The track annunciators 8 are connected to the block 7 and through the analyzer 9 of the direction of motion with the control inputs of the switching elements 4 and 5. An indication block 10 is connected to the output of the block 7. The scaling block b, the zero setting block b, the signal processing block 7 and the display block 10 constitute the recording device 11. The motion direction analyzer 9 is a signal decoder for signaling sensors for four inputs and three outputs, the output signal, depending on the combination input signals may only be present on one of the exits. The analyzer 9 of the direction of motion is made on standard elements NAND, NOR or NOT digital logic Nodes 3 corrections are performed, for example, in the form of a resistor voltage divider and a bridge circuit is introduced with a constant bias. The device works the next time. Under static loading, the signal from the track signaling devices 8 is absent and the analyzer 9 of the driving direction only includes the switching element 4, by means of which the signals from the force-measuring sensors 2 are fed to the input of the scaling and setting unit b. When weighed in movement, depending on the direction of movement of the signal from the travel alarms 8, the analyzer 9 of the direction of movement turns on the corresponding switching element 5 and the input of the block receives the corrected signal from the force-measuring sensors 2. The scale correction and the readings of the unloaded scales are determined when checking the scales. The use of the present invention makes it possible to compensate in a purely electronic way the additional error arising due to the redistribution of loads between the wheelsets, which will make adjusting the weights easier and less labor intensive. As a result of using the proposed invention, the weighting error is reduced by 30-40%. Apparatus of the Invention A device for axially weighing in motion railway rolling stock, comprising a load-receiving platform with force-measuring sensors, track warning devices and a recording device with scaling and zero setting units, signal processing and indication, characterized in that, in order to improve accuracy by eliminating ambiguity change the direction of motion; two correction nodes, three switching elements and a motion direction analyzer are introduced into it, with the inputs of both The correction signals and the input of the second switching element are connected to load sensors, the outputs of the first and second correction nodes are connected respectively to the inputs of the first and third switching elements, the outputs of all switching elements are connected to the input of the scaling unit and the zero setting of the registering device, and the control inputs of all switching devices . Copies are connected to the outputs of the analyzer of the direction of motion, the inputs of which are connected to the track signaling devices. Sources of information taken into account in the examination 1. EM Gusev. and others. Weighing of moving objects. Overview information TSNIITEIpriborostroeni. M., 1974, p. 23. 2. For the UK 1487162, class G 01 G 19/04 published. 1977, (prototype).