DE505558C - Floor switch for electric elevators - Google Patents

Description

Floor switches for electric elevators They are floor switches known for electric elevators, in which the contact track in the form of an endless, The entire elevator shaft is penetrated by a strip of tape divided into two halves and interacts with sliding contacts. However, these floor switches have the Disadvantage. that they take up quite a bit of space and that they are re the manufacturing and plant costs represent a considerable burden on the whole plant.

One was also forced to use a special drive with guide washers and to arrange tension weight and contact cords, which makes it clearer aggravating and the sources of error increasing the need to lay cables became.

The invention has now set itself the task of addressing the disadvantages of this to eliminate previously used floor switch.

It is based on your thoughts, the regulator rope, which every passenger elevator must have for security reasons, at the same time by "interposing two Isolation points to be used as floor switch contact strips.

The invention consists in the fact that the control rope has two functions is used; firstly, it still serves as an elevator safety organ and Secondly, as a contact path of the floor switch, making it endless, through insulating points Belt divided into two halves runs through the entire shaft and has sliding contacts cooperates, which are attached at the level of the individual floors. It is the rope in the usual way connected to the car so that the car the slight relative movement in relation to your necessary for the engagement of the catcher Rope can run.

A new, simplified arrangement is thus formed in that the landing switch cantactic balin is also the control rope at the same time.

As a result, there are a number of previously unattainable advantages guaranteed. The sources of error and malfunctions are due to the newly created simplification reduced.

The reliability of the elevator is increased; because because now If the control rope is also part of the control, the elevator does not run if this important safety rope is damaged. The state of the governor rope becomes so automatically monitored.

Another advantage is the clarity created in the Elevator shaft. Furthermore, the cheaper plant and production is another Advantage of the invention. The current type can be direct current, three-phase current or alternating current used «-erden. With all these types of electricity, of course, where the new The floor switch is not protected by elevator barriers Control circuit, which led through the new Stockß "ErkSSChalter-KOntaktballn will, be operated in a manner known per se finitely with a low voltage, «-elche is harmless when touched.

The invention is in the following description as well as by the schematic Representations of the drawing explained in more detail.

Fig. I shows the circuit of a push button control with 4. stops. It means a the controller, h the car. The control cable is formed by the cable parts c and d, which are also contact paths and are electrically isolated from one another by the insulating pieces e and f. but are mechanically connected to each other endlessly.

g, h, i are sliding contacts and lie on the cable part c, which is conductively connected by the sliding contact k with line l and the relay coil in for initiating the downward travel of the elevator.

The sliding contact n is at the. position of the car shown b on your insulating piece e, which is attached to the car.

The sliding contact o lies on the piece of rope d, which means the same thing the line p and the relay coil q for initiating the upward travel of the car is conductively connected.

For the sake of simplicity, the is only for the second stop Associated push button button r and the floor coil s with your contact lever t drawn.

The position of car b is in the drawing in .4. Floor accepted. If you want to get the elevator from the 2nd floor to the 2nd floor, press the button r; this creates the following circuit: from the --- pole via the button r - through the coil s, Line -, sliding contact la, piece of rope c, sliding contact k, line 1, coil fit to the - [- pole. The floor coil, s is excited, whereby the contact lever t is attracted so that it is conductively connected to the line u; This causes the relay coil s to lock electrically in the usual way, so that the button r can be released. At the same time as the coil s, the coil nt is also energized, so that the downward movement of the elevator is initiated and moves until the insulating piece e connected to the car lifts the sliding contact 1a from your piece of rope c. This interrupts the circuit, all coils «are de-energized, and the car comes to rest on the 2nd floor The control works in the same way when the car is sent.

Fig.2 shows the application of the subject invention for a simple Lever control. The contact tracks c and d are used with their sliding contacts k and o as power supply for the "up" and "down" contacts d and c of the lever control device in car b; the supply line from the --Pul we; l in a manner known per se the hoisting rope v formed, which with your lever control contact lever ü, conductive connected is. This eliminates the previously common flexible supply cable to the car. This is a great advantage, especially for all elevators where the previously common supply cable can easily be damaged (e.g. on ship lifts, for external elevators that are exposed to high wind pressure, etc.).

Fig. 3 shows the application of the inventive concept in a fine adjustment control of an elevator. The exact setting of the car on each floor is done by sliding contacts g and h attached to this floor; Both sliding contacts have accumulated in the position shown on your insulating piece e, so they no longer have a connection with the line c or d, and the car is set exactly at the floor level concerned. With every suspension rope that occurs, the z. B. can be caused by heavy load on the car h, the sliding contact g would close a circuit from the - pole via line d, contact o, coil q to the + pole, which causes the car to retract precisely upwards. In the event of a hoisting rope shrinking, the contact h at the front - pole via line e, iontact k, coil m to the + pole would close a circuit that would cause an accurate retraction downwards. The car will therefore always adjust to its correct position in both cases.

Claims (1)

PATENT APPLICATION: Floor switch for electric elevators, at which the contact track in the form of an endless, by insulating points in two Halves of a split strip running through the entire roadway, characterized in that that the band forming the contact path is used at the same time as bowling rope.