SU109306A1 - Device for determining the average weight category of moving cars - Google Patents

Description

The invention relates to devices that automatically determine the average weight category of cars moving from a railroad slide.

Weight data on wagons is necessary for use in the design of car braking devices by rail retarders.

In the known devices of the hump automatic centralization, the braking of cars by rail retarders is performed depending on the speed of movement of the carriage being moved, and the speed of the car is determined by the operator approximately. This leads to improper use of braking equipment and possible accidents.

The purpose of this invention is to eliminate these drawbacks and to create a device that provides a more accurate automatic determination of the weight categories of cars needed to make better use of the means of braking.

In the described device, weighers, mechanically connected to the switches of electrical circuits, the voltage of which is proportional to a certain weight category of cars, are summed up and supplied with the aid of shchagovyh searchers and voltage transformers on recording instruments are used.

FIG. 1, 2 and 3 are diagrams of a device for determining the average weight category of moving cars. This device solves the equation:

where: I-voltage characterizing the average weight category of the uncoupling; L is the voltage characterizing the pressure of the wagon axis of the lightweight category; C T - the same, respectively, srednevesovoy and t ZHL-i-n, C-p., T, +., - "3

No. 109306-2 -

carpal category; L ;, “2 and - the number of axles of the lightweight, medium-weight and m-hell category.

The device consists of the following main units: a pensor, determining the weight category of each axis (Fig. 1); an electrical counting circuit recording the average weight category of the detachment in the form of electrical voltage (Fig. 2); electric circuit accumulator (Fig. 3), which makes it possible to accumulate the values of weight categories of uncoupling, moving on the same bundle of podgorochnye paths, and delete these values before using them during the braking.

The work of the gauge is based on the use of the deflection of an elastic steel bridge rigidly fixed on the ends of the bridge. The deflection occurs under the action of the pressure of the wheels of the cars of the moving unhooking. The meter is designed to determine three averaged weight categories of axles of uncoupling: light L - from 1.5 to 3 tons, medium C - from 3 to 7 g, and heavy T - from 7 g and higher.

The meter is mechanically connected to the three contacts of the LP, SP and TP so that when driving over the meter of the wheels of the car, either one LP contact or two LP and SP, or all three of them are closed: LP, SP and TP (depending on the size of the bridge weight gauge, and consequently, the magnitude of the weight of the uncoupler).

The meter is mounted on an insulated rail, which, together with the included relay PR, forms a rail scaler.

From the impact of the ramps of the uncoupled cars on the gauge and on its rail circuit, an electrical counting circuit of the pillar operates, which counts the number of light, medium fifth axles - and determines the average weight category of the whole uncoupler from integer.m. In order for the device to determine the weight category, sufficiently long uncouples (the circuit is designed for a number of axes of not more than 22 pieces); the counting circuit counts and considers only the odd axes of the detachment.

The division of the axes into even and odd is made by a divider, which consists of two NSR and SSR relays. The first changes the position of the core (.wheat beats or releases) only when the ramps are pressed on the meter, the second only when the ramps descend from the pillar, and the effect of the odd ramp (press and descent) on the ram meter causes these relays to operate alternately, their alternate release.

The counting of odd axes is maintained by the step finders of LSHI, SLIH, TSHI of type SHI-11 (other types of counter circuits can be used).

The odd axis is counted by turning one step of the brushes of one finder LSHI, the middle axis is counted by turning one step at a time the brushes of two finders - LSHI and USHI, and the yellow axis - by rotating the brushes of all three finders LSHI, SLH, and TSHI.

The total counting of all axes is carried out by the LSHI finder, the summation of the + + expression is carried out using a voltage transformer, for which the lamellae of the searchers are connected to the sections of this transformer I (Fig. 2).

All the contact fields of the seeker through the brushes are connected in a circuit so that from the first reference the transformer sections included by the seekers are connected in series and the voltages taken from them are added together.

The sought voltage corresponding to the average weight category of the uncoupler is found with the help of an averaging dividing autotransformer. For this, the resulting voltage from the first transformer IT is applied to the winding of the dividing autotransformer DT, from the tap of which the voltage I - is removed through the LSHI field.

NcvMM ,.

 - - (here n is the number of odd slopes of the pull-off).

The voltage obtained is increased by the intermediate transformer DC and, after rectification, is applied to three indicator relays L, C and G. These relays have different sensitivity. Relay L defines a lightweight category, relays C and L together - the middle category. The relay T is triggered in conjunction with the relay A and C n determines the weight category.

The auxiliary BP relay is necessary for cases when the number of axes in the uncoupling is more than two times the number of finder lamellas or if for any reason one of the pill contacts did not open after the slope was exposed to it. In both cases, the BP relay releases the measles, turning off the searchers and stopping, and the score. At the end of fixing the weight category of the detachment (in the interval between otsenamp), the tracker weight circuit is released, and the searchers with a pulse current of 50 Hz return to their original position.

A meter is a device that serves several moderators located on different bundles of nodgorochny paths, as well as when following a number of uncouples, consisting of single carriages, when it is necessary to accumulate weight values of uncouples determined by the weigher and to hold the values , until they are used for auto braking. For this purpose, a three-section storage device is proposed, which allows to accumulate three values of the weight category of the uncoupling units moving on the same bundle of piedmont tracks. The number of sections can be increased or decreased as desired, which makes the structure of the circuit unchanged.

The accumulator perceives the values of the weight categories outputted by the indicator relays L, C and G of the meter so that the value "light fixes the operation of the L series relay (L, 2L or ZL), the value" average response of the C series relay (1C, 2C or 5C), and the value of “hard” is triggered simultaneously by two relays of the series L and C (1L and 1C, or 2L and 2C, or ZL and ZS).

With a free drive, the first section is occupied by a third section, then the second, then the first.

The accumulated values are used from the third accumulator section. As the values are used, the accumulated values in the second and in the first sections are advanced, i.e. the transition from the second to the third and from the first to the second section, etc.

In the circuit diagram of the accumulator (Fig. 3), the following conventions are accepted:

1PCR relay controlling the position of the first arrow; 3 CRP - third position relay control; 3 SPR - track relay of the third arrow;

PPR - repeater track relay.

1А, 2А and FOR - protective relays, excluding the receipt of repeated tasks;

/ SRS-relay to switch off the first retarder;

P1VK.R-relay repeater off;

2VKR - a relay for switching off the second retarder; 4L- light weight relay, car category;

4C is a weight relay for an average car category

Subject invention

Claims (3)

1. A device for determining the average weight category of moving cars (uncouples), including a track circuit, weight gauges and associated recording devices, which are related to that. - 3 - № 109306 No. 109306 In order to automate the process of weighing cars and determine their weight categories, weighers are mechanically connected to electrical circuit switches, the voltage of which, corresponding to a specific weight category of cars, is summed up and supplied using step-by-step finders and a nattr transformer on recording instruments. 2. The device according to claim 1, so that, in order to accumulate the values of the weight categories of moving cars (uncoupling) until they are used, a storage device is used, in which the fixation of the values of weight categories is performed by operation of the corresponding electromagnetic relays in each section of the accumulator. 3. The form of the device according to claim 2, characterized in that capacitors instead of electromagnetic relays are used to transfer the accumulated values of weight categories to the accumulator. IT -llOv