SU91779A1 - Automatic Shoe - Google Patents

Description

This invention relates to automatic shoes for braking uncoupling on a hump of railway stations with a variable skid length.

The main disadvantage of the known shoes of this kind is that they continue to unhitch the brakes when the latter has reached the required speed.

The proposed shoe provides the elimination of this drawback due to the fact that it is equipped with a speed meter with a contact system, which measures the speed of the shoe at the time of braking and controls the movable shoe head.

FIG. 1 shows a sketch of the installation of the proposed shoe; in fig. 2 - spring-hydraulic return mechanism, side view; in fig. 3 - the same, top view; in fig. 4 - electrical circuit.

The bed / shoe (Fig. 1) is connected to a cable 2, wound on a drum 3, which is acted upon by a spring-hydraulic actuator 4 by means of a rail 5 and a gearbox 6. A speed meter inductor 7 is connected to the drum 3 (Figs. 3, 4).

The proposed shoe operates as follows.

An uncoupled release with an arbitrary speed, front wheel flange 8 (Fig. 1) presses the push relay 9 and turns on the left coil of the relay 10. This engages a friction clutch that connects the axis of the slider J2 to a synchronous motor 13 rotating with constant speed, so that the slider 12 will rotate clockwise, slipping on sector 14.

Continuing movement, the uncoupling with the front wheel flange acts on the push relay / 5 /, as a result of which the relay 10 is activated by turning off the friction clutch 11.

If the uncoupling speed is lower than the set speed and there is no need to brake it, then at the moment of pressing the relay 15, the slider 12 will have time to pass sector 14 and the relay circuit 16 will be open, the relay 16 will not work and No. 91779-2 -

The chain will be able to move freely, without braking. rioJTsyHOK 12, under the action of the spring 17, returns to its original position and the whole system again assumes an idle state.

If the Unhook speed is higher than the required one and it needs to be braked, then at the moment of pressing the pressure relay 15, the slider 12 will not have time to go off sector 14 and the relay circuit 16 closes and the starting solenoid 18 will turn on through a system of levers and springs acting on a movable the shoe head 19, forcing it to press against the rail head 20, has dried up, this is braking (Fig. 4 and 1).

Prulsin-hydraulic privolCh 4 to return the shoe to its original position after braking allows you to bring the length of the skid to 10-12 711, and with welded links and more, while the existing spring-loaded return mechanisms allow the length of the south not more than 2.5-3 , 0 m. When the shoe moves along the rail, the drum 3 of the return mechanism injects the inductor 7, which causes the motor 21, associated with the magnetic coupling 22 with the axis of the slider 23, to rise. The deviation angle of the slide 23 will be greater, the greater the speed of turn, motor 21 -k respectively sk awn inductor 7, which are proportional to unhook the moving speed. The slider 23, moving clockwise, rotates the rod 24 to the right of the contact of the selector 25, opens it and makes it impossible for this selector to operate when the speed is reached by the inductor 7.

When braking the shoe, the uncoupler reduces the speed of the movement, and accordingly the deflection angle of the slider 23 decreases.

When moving counterclockwise, the brush 24 closes with contact 26, but later with a gradual decrease in the deflection angle it reaches contact 27 of the selector 25, whose position on the selector is due to the required output speed. When the gate 24 is closed with this contact, the relay circuit 28 is turned on, which turns on the power solenoid 29. The latter releases the head 19 of the bashmak, resulting in the uncoupling being braked to a predetermined speed, is able to further move forward. In this case, all the solenoids and relays return to their original state. The bashmak is returned by the spring-hydraulic drive 4 to the initial position.

Due to the fact that the different railings of the cars are curves, the arrows require different output speeds of the father, a whole series of parallel contacts is provided in the selector 25. The installation on this contact is made by moving the slider 23 along its axis by pressing the route buttons. If any of the blocking sections 30, 31, 32, 33, 34 is set, for example, 32, then the corresponding relay of group 35 is activated, for example, relay 36, which will cause the subsequent operation of the remaining relays of this group (relay 37 and 38), the core of which is open the circuit of the contacts 39, 40, 27 of the selector 25.

Due to this, the slider 23 will no longer work on pins 39, 40, 27, but only on pin 41, which corresponds to a lower unhook speed, since it is located closer to the vertical position of the slider. If, due to the significant weight of the unhook, the shoe cannot reduce the unhook speed to the set value during the entire process, then the shoe will be turned off with the corresponding mechanical latch (not shown in the drawing).

To regulate the movement of the uncoupling in the podgorny park, usganav produces a number of similar installations on each podgorochny path with some simplification. In these installations, there are no many routing contacts, and the available route is equipped with only three contacts 42, 43, 44.

Its operation is similar to the process outlined above, except that the uncoupler can move not more than the speed limit. Otherwise, the speedometer relay 45 is activated and the uncoupling is braked to the set speed.

If, however, the blocked section is taken in front of the car, the relay 38 of the relay group 35 is activated, the circuit of the contact 44 of the selector 46 is turned off, and the contact 43 becomes the working contact. If the first section is taken along, the relay 37 and 38 are activated relay groups 35, the circuits of contacts 44 and 43 of the selector 46 are turned off and the contact 42, which is set to the speed allowed for collision of the cars, becomes the working contact. In order for the speed meter on the installations of the podgorochny park to include a trigger mechanism for speeds depending on the occupancy of the ahead blocked sections of the track, the selector 46 is made of separate insulated sections that are turned on by the soil relay 35. Depending on whether the first vortered stationary blocked section or second, the second or third section of the selector 46 is turned on, which corresponds to different rates of activation of the braking installation. The ability of the operator to enter into the action of the machine is achieved by inserting push-button contactors into the necessary relay circuits. To introduce adjustments to the output speed of the uncoupling, due to the change in the forces and direction of the wind, it is necessary to introduce a control screw acting on the selector cylinder, which will rotate it around the axis in one direction or another and create different deviations of the contacts from the vertical that corresponds to different output uncoupling speeds.

Subject invention

1. Automatic bashmak for braking uncoupling on the humps of railway stations with variable skid length, characterized in that, in order to stop the unhooking when it reaches the required speed, due to the degree of filling of the track of the kiln park, the said shoe is supplied with a speed meter with a contact system measuring the speed of movement of the bashmak at the moment of braking and controlling the movable head of the shoe.

2. Automatic bashmak but p. 1, characterized in that, in order to increase the length of the wizard, it is equipped with a spring-hydraulic drive to return the bashmak to its original position after the braking has been performed.

FIG. one

FIG 4