DE1004351B - Floor control for push-button lift - Google Patents

Description

Floor control for push-button lift for control an elevator with push button control and more than two stops of one Up to now, the floor after the other was usually either mechanically Floor switches actuated from the car or from the elevator machine or a Rope reel-driven copier used. The application of mechanically operated Floor switches are limited with increasing driving speed. At speeds of over 0.8 m / sec. the stresses on the gear lever too big and the resulting noises unbearable. As the number of It is also becoming less and less possible to use copier units on two floors. at Elevators with more than about 15 floors make them big enough to accommodate Causes difficulties. The translation, i.e. H. the relationship between contact spacing and distance between stops, becomes: so unfavorable that an exact setting of the Contacts are at least very difficult, which is not entirely impossible.

There are also magnetically driven stick switches known that can be controlled by pulse generators from the car and step by step with each control pulse move on. The contacts of these switching mechanisms are usually arranged in a circle, which means that they can only be used up to a certain number of stops is. One or more such stepping mechanisms can be found at many stops connect in series. However, this requires additional auxiliary relays with complex ones mutual blockages. The mode of operation of these stepping mechanisms is also very sensitive to tension, so that they tend to malfunction.

The subject of the invention is a floor circuit for push-button control Elevators with any number of floors at which in place of the previously used copier, polarized self-holding relays in parallel connection which are controlled by pulse generators on the car. The circuit requires two relays for each mezzanine floor and one for each end floor Relay. All relays can be connected to the rest of the pushbutton relays and contactors wired to a common switchgear in the workshop, so that at the installation site only the assembly and adjustment of the pulse generator on the car are required.

Fig. 1 shows the schematic structure of a push-button control with the new floor circuit for four stops in the simplest form, that is, without an additional door lock, Fig. 2 shows the arrangement of the control plates in section. The switching elements drawn in Fig. 1 below the dash-dotted dividing line are required for the new floor circuit, the switching elements drawn above are required for the push button control. T 1 to T 4 are door contacts, D1 to D4 are push buttons for fetching or sending the car. DR1 to DR4 are the push button relays, DR 1/1 A to DR4 / 1 A are operating current contacts on the push button relays.

SO is the travel direction contactor for ascent, SU the one for descent, S0 / 1 R, S012 R, SUl1 R, SU / 2R are closed-circuit auxiliary contacts on SO or SU. S03A, S04A, SU3A and SU4A are working current auxiliary contacts on SO or SU.

II and III are the floor switching relays for the Zwnschznsitockwerk 1st floor; IV and, V are the floor switching relays for the mezzanine floor 2. Floor; I and VI are the floor switch relays for the ground floor at the end of the floor and. 3rd floor.

II 1 A, II2 A are normally open contacts, 113R is a normally closed contact on the floor switching relay II. The contacts of relays I, III, IV, V and VI are analogous designated.

G and H are magnetic pulse generators of known design, on the car arranged. E and F are voltage potentiometers.

Fig. 2 shows the arrangement of the control plates B in the shaft for the two magnetic pulse generator G and H. When traveling upwards, the pulse generator G is activated as soon as each time the car has left a floor, give a switching impulse. Of the Pulse generator H, on the other hand, becomes one when entering the next floor Give impetus.

When driving down, it is exactly the opposite. Pulse generator H gives when leaving of the floor and pulse generator G a pulse when entering the next floor.

It is assumed that the car is on the ground floor. All floor switching relays I to VI are in the de-energized state. The travel, vvend contactor SU for downward travel is blocked by the open contact 1 1 A. If the car is to run to the 1st floor, the following current path is created when button D2 is pressed: Plus-T4-T3-T2-T1-SU / 1R-SO / 1R - D1 - D2 - coil DR2 - III1R - SU / 2R - coil SO - minus. Push-button relay DR2 and reversing contactor SO pick up and remain energized via DR2 / 1A. The car moves up. After leaving the floor by the braking distance, the pulse generator G closes briefly. This creates the following current path: Plus - S04A - G-coil I-III3R-F-Minus. Floor switching relay I receives a switch-on pulse and remains attracted under the action of its permanent magnet. It closes its working contacts I 1 A, 12A. Before the car arrives on the 1st floor, when the retraction braking distance is reached, the pulse generator H closes briefly. This creates the following current path: Plus - SO 3 A -H- coil III - 113R -12A - E - Minus. Floor switching relay III receives a switch-on pulse and also remains attracted under the action of its permanent magnet. It closes its normally open contact II2A and opens its normally closed contacts 111 1 R and 111 3 R.

By opening the contact 111 1 R, however, the current path shown above for the upward travel is interrupted. Push button relay DR2 and reversing contactor SO drop out and the car comes to a standstill at the end of the braking distance on the 1st floor.

The push button relay DR2 is, since the contacts 111 1 R and 11 1 A are both open, blocked for both entry and exit.

If the car is now to go to the 2nd floor, the following current path plus-T4-T3-T2-T1-SU / 1R-SO / 1R -D1-D2-D3-coil DR3-V1R-SU is created when the push button D 3 is pressed / 2R - coil SO - minus. Pushbutton relay DR3 and reversing contactor SO pick up and remain energized via DR 3 / 1A. The car moves up. After leaving the floor by the braking distance, the pulse generator G closes again briefly. This creates the following current path: Plus -S04A-G coil II-V3R-III2A - F - Minus. Floor switching relay II receives a switch-on pulse and remains attracted under the action of its permanent magnet. It closes its normally open contacts II1A and 112A and opens its normally closed contact 11 3 R. Holds permanent magnets attracted. Floor switching relay V causes the opening of its contact V 1 R to switch off DR 3 and SO and thus to stop the car on the 2nd floor.

Similarly, when driving on to the 3rd floor, the pulse generator G will follow Leave the 2nd floor of the floor switching relay IV and when you arrive on the 3rd floor the floor switching relay VI is energized by pulse generator H. Both hold out their permanent magnets attracted.

So while when the car is in the lowest landing all floor switching relays are in the release position, they are at the status of the Car in the top landing are all in the switch-on position.

If the car now starts a downward journey from the top stop, e.g. B. to the 2nd floor, the following current path is created after pressing button D3: Plus-T4-T3-T2-T1-SU / 1R-SO / 1R -D1-D2-D3-SpwleDR3-IV1A-SO / 2R - Coil SU - minus. Pushbutton relay DR3 and reversing contactor SU pick up and remain energized via DR 3 / 1A. The car moves down. After leaving the 3rd floor by the braking distance, the pulse generator H closes briefly. This creates the following current path: Minus - SU3A - H - Coil VI - IV2A - E - Plus. The coil of the storey switching relay is thus traversed by the current in the opposite direction, so that the flow of force generated in it counteracts that of the permanent magnet and causes the relay to drop out. Relay VI thus closes its normally closed contacts VI 1 R and VI 3 R. Before the car arrives on the 2nd floor, when the retraction braking distance is reached, the pulse generator G closes briefly. This creates the following current path: Minus - SU4A - G - coil IV-VI3R - V2A - F - Plus. The coil of the floor switching relay IV is now also traversed in the opposite direction by the current, which also causes this relay to drop out. Relay IV opens its normally open contacts IV1A and IV2A and closes its normally closed contact IV 3 R. By opening contact IV 1 A, however, the current path for DR3 and SU is interrupted and the car comes to a standstill on the 2nd floor.

If you continue to the ground floor, the other Stocki switching relay in the order V - II - III - I brought to drop out.

Claims (1)

PATENT CLAIM: Floor control for push-button-controlled elevator, characterized in that a relay group (I to VI) is used in parallel, with two for each mezzanine floor polarized relay and one polarized relay for each end floor is used which by two pulse generators (G, H) arranged on the car in one the sequence corresponding to the car movement. Considered Publications: German Patent No. 670 699; Telecommunications Technician Pocket Book, by H. Goetich, 7th edition, 1938, p. 107.