SU44298A1 - A device for electrical control at a distance of dropping elevator carts - Google Patents

Description

The proposed device is intended for remote control of dumping carriages on elevator conveyors. According to the invention, the device is characterized by the use of stopping electric motors at the right moment in a relay opening the zero coil circuit of the engine starting switch. This relay is controlled by rail pedals electrically connected to a switch, with which the trolley is controlled. Mechanical closing of the pedal is carried out by the wheel of the cart.

In FIG. 1 to 3 depict the proposed device in three projections, and FIG. 4-circuit control device.

The trolley / (Fig. 1) is moved along rails 2 by means of a cable 5, wound on a drum 4 and thrown over block 12. The drum is rotated by an electric motor 7 by means of a screw worm 6 and a gear wheel 5. The cart can drop grain in both directions from conveyor into the silo openings 9. Grain is directed to one or the other side of the trolley by means of nozzles 75 and a reversing valve fixed on the trolley. In the proposed scheme, the valve is repositioned when the trolley is moved to the opposite end

motor valve is set to ,. that the grain is dropped on the left side; when moving the cart to the extreme position in the direction of the electric motor, the valve is positioned so that the drop is made on the right side. The valve is shifted by special levers 14, which, when the trolley is moved to the extreme position, touch the stop / 7 fixed on the rails. The details of this device are not given here, since the implementation of such a device will certainly not present difficulties.

In order to put the cart to drop the grain into any hole, say, on the left side, when it is in the drop position on the right side, you must first move the cart to the far end, which will rearrange the valve of the cart to drop to the left side, and then put the cart against the desired hole.

The trolley is moved to either side by a reversible electric motor (through a worm gear, a drum and a cable), and it is stopped both in the extreme positions and against all other openings in the same order.

In order to place the cart, for example, against the third right hole, when the valve is also in the right position, the controller sets his switch 75 (Fig. 4) to the fourth position and presses the engine start button; When the carriage moves, it will close the contacts of the pedals 8 and W, mounted on rails appropriately against each hole and at the extreme positions of the carriage, with a special rod fixed on it.

As soon as the cart reaches the third hole, it will close the relay circuit 76 through the pedal contact, which, after drawing its own measles, breaks the / 7 neutral coil circuit of the remote starter, the switch will turn off and the motor will stop, and therefore the cart will stop.

In parallel, the relay 16 closes the third circuit to the left of the edge of the signal lamp / 5 located on the signal box at the dispatcher, the lamp turns on, which indicates to the dispatcher that the cart has stopped against the hole on which it has placed the switch.

If it is necessary to rearrange the dolly to drop the grain to the left side, i.e., to rearrange the dolly and move the valve to another position, then first it is necessary to lift the dolly to the extreme position, the valve is moved and then to reinstall the dolly against the desired opening. The controller sets the / 5 switch to the last contact and presses the engine button. The cart goes to the extreme position, the lever J4 engages the stop / 7 and moves the valve to the left, and the cart closes the contact of the rail pedal, which closes the relay circuit M, turns off the engine and stops the cart, and in parallel the relay 16 turns on relay 20-2J attracts its measles, which closes the contact 22 and breaks the contact 23, i.e. now, when the trolley stops in the same positions as before when the same pedals are closed, not the lower lamps 75, but the upper 19, the corresponding silo holes left with the toryons. When the trolley stops in the extreme position it will turn on

An extreme lamp that indicates to the controller that the valve has been transferred.

Then he sets the switch 75 to the desired hole in the usual order, starts up the engine again, and the carriage is moved to where it is needed to drop the grain to the left side. The dispatcher learns about this by turning on the corresponding lamp / 9 on the signal plate. Moving the trolley back and forth is done by applying a reversing device to the engine. The described scheme, in addition to the possibility of control at a distance, halves the number of connecting wires between the dispatcher and the silo holes, against the simple signaling of the trolley against the silo hole, as it moves, used in the system.

In this system, the reduction in the number of wires is due to the fact that the signaling and control for the right and left sides of the silos are made using the same wires, and the same signal lamps are switched using relays 20 and 27 when translating the bogie valve.

The described mechanical structure for moving the carriage can also be carried out in another form. The essence of the invention is to install the cart on the desired hole and to signal its location.

The subject matter of the invention.

A device for controlling the dumping carts of elevators at a distance, characterized in that in order to reduce the number of wires in the signaling and control circuit, which includes relays driven by rail contacts electrically connected to a switch that controls the carriages, a switching relay is used 20, 27, designed by contacts 22, 23 to include in the chain one or another group of signal lamps, and to move the valve of the cart at the extreme positions of the cart, the stop 77 is applied and lever j4.

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