SU68903A1 - A device for determining the speed of a rolling stock passing through a given area - Google Patents

Description

In order to determine the speed of a rolling stock passing through a given section, it is known to use contacts installed on this section, which are used to turn on and stop the counting mechanism through their controlled sublocking relays.

The proposed device, which is a speed meter, consists of three pedals, a group of slow-acting relays and, accordingly, the number of relays — a group of lamps.

The relay group is the main part of the speed meter that determines the speed, and the lamp group is the speed indicator.

According to the invention, the counting mechanism consists of a series of relays having different deceleration for release, connected in parallel to the power source through normally open contacts of one relay, turned on by the first rail contact in the direction of movement, and self-blocking via the normally closed contact of another relay, turned on by the second one rail contact

and turn off the third rail contact so that the number of remaining relays to judge the speed of rolling stock in the area bounded by the second and third rail contacts.

The number of relays and lamps depends on the gradations of speeds that are selected depending on the operating conditions.

The accompanying drawing shows a schematic diagram of the device at five speed levels.

In the drawing: E is the power circuit; I, P and Yad - first, second and third pedals; JP n 2P - high-speed relays; // C and 2K contacts of these relays; P /, P2, RZ, P4 and P5 time-delay relays, adjusted to varying degrees of deceleration; Yu, K2, KZ, K4 and K5 - contacts of these relays; 77 /, L2, LZ, L4 and L5 - lamps indicating the speed; In the switch.

Pedals mounted on the track in close proximity to each other. Relays with contacts are located in a special box on the post.

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control, and the lamp - before the eyes of the operator.

Before starting work, turn on switch B. When the wheel of a car moves in the direction indicated by the gunner, it first presses the pedal / 7 /, as a result of which the circuit closes: / barber E, switch B, pedal I /, minus E. High-speed the IP relay, having excited, closes all of its contacts / L, so that the relay itself is blocked through the circuit: plus E, switch B, contacts 2K and // (, relay 1P, minus E and remains under current after the wheel passes over the GP pedal.

At this time, all the delayed-action relays P1, P2, etc., are energized along the circuit plus E, switch B, relay P7, P2, etc., the contacts W, minus E and remain energized until those holes, but the wheel does not will appear above the pedal / 72. Then the 2P relay is energized and all of its 2f {; the 2P relay is blocked by the circuit: plus E, switch B, PZ pedal, 2K contact, 2P relay, minus E. At the same time, the power supply circuit of the 7P relay and all the // contacts (disappear, thereby de-energizing and all the I / P relays etc.

The relays I / P2, and t, d., Previously closed, begin to fall off, but not immediately, but in turn, starting from the K / relay P7 contact, which has the least deceleration. Falling off continues until the wheel stops at the PZ pedal, pressing which opens the circuit: plus E, switch B, pedal PZ, contact 2K, relay 2P, minus E. At the same time, contact 2K located in the chain plus E, switch B, relays P7, P2, etc., contacts C7, K2, etc., contact 2K, minus E, re-closes and restores power to part of the relay P5, P4, etc., located on the left side, contacts L5, / (4, etc., which have not yet had time to disappear.

The position is stabilized and the closed 2K contact turns on the lamp circuit. Only one lamp illuminates, depending on which of the contacts U, K2, etc., have had time

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fall away. Suppose that the last time the contact of the short-circuit has disappeared, and the contact K4 is not yet, then the lamp LZ lights up along the circuit plus E, switch B, contacts R5, K4, b (3, lamp LZ, contact 2 / (minus E.

Since the distance between the P2 and PZ pedals is constant, and the time of the wheels between these pedals can be different, the number of contacts of the Yu, K2, etc., that have fallen off, etc., can be different and, therefore, different lamps will light up in direct dependence on speed.

If the distance between the pedals P2 and LZ is indicated by 5, the wheel speed through g /, and the travel time from the pedal / 72 to the pedal PZ through T, then

V -jT-Men V, we get different T, from / to / 5 and these values can be divided into groups from / 1- / 2, from / 3- / 3, from ts-ti, etc. If the delays are adjusted for times /, /. ,, / з and so on, with / J being the smallest and a / 5 being the greatest, then the least slowdown corresponds to the smallest speed and, therefore, the following equalities take place:

1 2 and so on

ti

Intermediate velocities between 5 and 4 will be between / 1 and / 2 and therefore cannot be shown exactly - lamp L5 will be on as long as the speed decreases from v to at speeds between and and v lamp L4, etc., at speeds from and to UO - lamp L7.

Thus, the speed meter readings are stepwise. These steps must be chosen according to local conditions.

If, for example, five speeds of 1, 2, 3, 4 and 5 m / s are chosen, and the distance between the pedals H2 and PZ is 0.6 m, respectively, the decelerations will be: 0.6, 0.3, 0.2, 0.15 and 0.12 sec.

The choice of the distance between the pedals P7 and R2 depends on the following conditions: during the passage of the wheel of this distance, all the relays P /, P2, etc. must have time to be energized. In practice, they are excited for no more than a second, s. If the maximum speed on the spot is setK; I to 8 m / s, then the distance S should be:

S: -8.0.1; ,eight. This (; the smallest S, the largest may be such that all three pedals are located between the most closely spaced wheels of cars, i.e. 1.8 m in bogies. This is necessary in order for the Speedometer to read and get from each wheel Thus, if the distance between the pedals П2-ПЗ. I.e. S is chosen 0.6 m, then the distance between the pedals / 77-П2 - i.e. 5, will be:

1.8-0.6 1.2 m

or limits for S:

 , 8 m.

Above, the order of operation of the slow-acting relay was described and it was noted that at some point the contacts of all the relays are attracted, which should lead to the extinction of all the lamps. At the next moment, when the contacts start to fall off, the lamps would have to light up and go out in series, starting with the lamp L5 to the one that corresponds to the speed at the moment.

Such a mode of lamp operation would be inconvenient for observation and, to eliminate inconvenience, a 2K contact is provided in the lamp circuit, which breaks the lamp circuit when the 2P relay operates, i.e. when the A / K2 li drops out. It is only after the wheel of the PZ pedal passes by that lamp that corresponds to this speed lights up. Her reading remains until the next wheel passes.

If the uncoupling goes at the same speed, the same lamp will light up all the time until the next level Her will go to the next level, the next lamp will light up. Thus, the readiness of the speed-booster becomes very convenient to observe.

The use of lamps of different colors to make the speed. Measure even more

poojonym, showing the operator this or that braking mode of shsh achieving the maximum speed.

The circuit has a switch B; its purpose is to turn the speed gauge on and off. The slider of this switch, moving from the right to the left position, briefly switches on the relay / P circuit.

If this were not the case, then when the circuit was turned on, the L / lamp would light up all the time, as can be seen from the circuit of the lamp circuit. Turning on the relay / P causes all the A /, K2, and so on contacts to push down, which causes all the lamps to turn off: this does not prevent the speedometer from approaching the wheels to the pedals to do its normal work.

The proposed device can be successfully used on sorting points.

Subject invention

Claims (2)

1. A device for determining the speed of a rolling stock passing through a given section, on which rail contacts are installed, which are used for switching on and stopping the counting mechanism through self-blocking relays controlled by them; the fact that the counting mechanism consists of a p yes relay, -. having different deceleration for release, connected in parallel to the power source via normally open relay / P contacts, turned on by the first in the direction of movement rail contact P, and self-blocking via a normally closed contact by the 2P relay, turned on by the second in the direction of movement rail rail П, and off by the third rail contact Yad so that the number of remaining relays to judge the speed of the rolling stock in the area bounded by contacts Yaoad. 2. The form of the device according to p. 1, characterized by the use of indicator. Chmp included depending on the number of included relays,. 103 -o / fj. K J-, / r / i