RU1794737C - Device for determining bulkiness of rail mobile object - Google Patents

Abstract

Usage: the device relates to measuring the spatial displacements of a rolling stock and determining its overall cross-country ability. The inventive device includes an acceleration sensor 1, a transverse acceleration sensor 2, an acceleration transducer into dynamic displacement signals 3, an adder 6, a unit for determining outstanding accelerations 4, a unit for determining quasistatic displacements of points of the compressor part 5, a recorder 7, a threshold unit 8. 1- 3-6-7; 2-4-5-6: 6-8. 1 C.p. f-ls, 1 ill.

Description

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The invention relates to devices for measuring the spatial displacements of rolling stock and determining its overall cross-country ability.

. A device is known by which it is possible to determine the spatial dynamic movements of rolling stock in straight sections of the track, and in the curves an additional part of the quasistatic displacement of the points of the stressed masses is the displacement due to the angular slopes of the indicated points from the action of the outstanding centrifugal acceleration, but it is not possible to determine total quasistatic displacement due to the neglect in this method of transverse displacement of the considered points on the springs parallel to the plane passing through rail heads under the action of outstanding centrifugal acceleration, which leads to inaccurate measurements.

. Of the known devices for determining the oversized rolling stock, the closest from a technical point of view is a device for determining the oversize of a moving object, the essence of which is that vertical and horizontal acceleration sensors are connected to the moving object, connected with converters of these accelerations to the corresponding linear movement of the vehicle’s outline points.

The disadvantage of this device is the ability to register with it only dynamic movements that coincide with complete movements only in straight sections of the track with the horizontal plane of the rolling surfaces of the rail yarns. Since the integration operations in acceleration converters are associated with a zero level uncertainty, in addition to integrators, acceleration converters include filters that do not pass through the quasistatic components of the signals, which does not allow us to reveal the constant components of the displacements. Since in the curved sections of the path quasistatic superimposed on the dynamic movements of the overall points of the body are caused by the slope and displacement of the body in the curve under the action of the outstanding component of centrifugal acceleration, the specified device does not have s curves. able to determine the overall overall movements of the sprung masses.

The purpose of the invention is to increase the accuracy of measuring the total spatial movements of the rolling stock.

This goal is achieved by the fact that the known device having sensors of horizontal and vertical accelerations installed at the considered points of the compressed mass, and a converter of the accelerations of these points into signals proportional to dynamic movements, is additionally equipped with the following devices: sensors

registration of transverse outstanding accelerations of non-sprung masses, a unit for determining the values of the indicated accelerations, a transducer for determining quasistatic displacements of points of the sprung mass

5 masses, depending on the magnitude of the outstanding centrifugal acceleration, by the adder, as well as a recording device and a device for controlling the extreme oversize of the rolling stock. The proposed device, having the indicated limiting features, makes it possible to obtain dynamic spatial displacements of compressed masses in straight and curved sections of the path, and due to its distinctive features it makes it possible to determine complete spatial displacements, including dynamic and quasistatic displacements.

In known prior art devices, incomplete movements in curved path sections are detected.

The drawing shows a schematic diagram of a device for determining the dimensionality of rolling stock.

The device contains transverse and vertical acceleration sensors of the abated masses of the crew 1, a sensor 2 of lateral accelerations of the unbroken masses of the crew,

0 converter 3 of acceleration signals into signals of dynamic displacements, block 4 for determining the outstanding accelerations of unpressurized masses, block 5 for determining the values of quasistatic displacements of about 5 spring masses at the points of installation of sensors on it, adder 6, recording device 7 and threshold unit with signaling device 8 ... The device operates as follows.

The signal from the sensor 1 for recording the accelerations of the considered point of the stressful mass of the moving object is fed to the input of the transducer 3 of the indicated accelerations5 in signals proportional to the dynamic displacements, which are output from the converter 3 to the input of the adder 6. The signal from the sensor 2 for recording the transverse accelerations of the unpressed masses of the moving object is fed to the input of the block

4 determine the outstanding accelerations of unpressured masses, the output of which receives a signal proportional to the quasistatic component of the outstanding transverse acceleration, which is fed to the input of the block 5 for determining the values of the quasistatic displacements of the points of the compressed masses, from the output of which the signal is supplied to the adder 6, to the other input of which the signal proportional to the dynamic displacements of the points of the massed objects of the object. After summing two signals at one time, a signal proportional to the field

by moving the points of the moving object, from the output of the adder is fed to a recording device 7, as well as to a threshold unit with an alarm 8, from which it is determined whether the crew can pass through this section of the track.

The dependences of the displacement values of the points of the springed masses of the moving object on the magnitude of the quasistatic component of the outstanding transverse accelerations of the springless masses can be determined both theoretically and experimentally.

Claims (2)

SUMMARY OF THE INVENTION 1. A device for determining the oversizedness of a rail-mounted moving object, comprising an acceleration sensor mounted on the compressed part of the accelerator, connected to the input of the acceleration transducer into dynamic displacement signals, the output of which is connected to one of the inputs of the adder, the output of which is connected to a recorder, different in order to increase the accuracy during the passage of the curved sections of the track, it is equipped with a transverse acceleration sensor mounted on the non-sprung portion connected to its exit the house by the input of the unit for determining accelerated accelerations and the unit for determining the values of quasistatic displacements of the points of the compressed part, the output of which is connected to another input of the adder, and the input is with the output of the unit for determining accelerated accelerations. 2. The device according to claim 1, excellent, and so on. that it is equipped with a limit oversized ™ control unit made in the form of a threshold unit connected to the said output of the adder and having an indicator at the output.