SU821377A1 - Actuator of slide door of lift cage - Google Patents

Description

I

The invention relates to the field of elevator building, in particular, to drives of a sliding door of an elevator car.

A drive of a sliding door of an elevator car is known, comprising an electric motor with a transmission mounted on the cabin, consisting of driving and driven members, bending around an endless pulling body, kinematically connected with. moving along the leading and driven guide carriages equipped with a rope-block system and the mechanism for reversing the movement of the valves 1.

The disadvantages of this drive mechanism are the complexity of the design and lack of reliability due to the presence of a gearbox and a curved wheel (guide), which is pivotally connected to the beam, moving in a guideway connected to the sash carriage; the presence of the carrier does not provide the universality of the drive for cabs with different width of the door opening.

The purpose of the invention is to simplify the design, increase the reliability of the drive and make it possible to use it in cabs with different widths of the door opening.

For this purpose, the drive is equipped with a hinged pin on the leading carriage and interacting with the mechanism for reversing the movement of the leaflets of the elevator car, in the slot in which is mounted a slide connected to an endless pulling organ.

In addition, the reversing mechanism of the leaves is made in the form of a hinge-lever system mounted on the cab and spring-loaded relative to it.

In addition, the rocker is spring-loaded relative to the leading carriage, which is equipped with a stop interacting with the rocker.

FIG. 1 shows a general view; in fig. 2 shows the curve of the speed of movement of the valves when they are opened and closed.

Claims (3)

The drive consists of an electric motor 1 mounted on the cab with an asterisk 2 mounted on its shaft, which, to eliminate the need for a gearbox, transmits through a chain 3 a rotation of an asterisk 4 with a larger diameter fixed on the shaft 5 on which an asterisk 6 is fixed with a smaller asterisk 4 dia. The asterisk b is the driving link in the transmission around the endless pulling organ - chain 7, and including two slave links-asterisks 8 and 9, having the same diameters larger than the diameter of the driving sprocket 6. The chain 7 is kinematically connected with moving along the guide line 10 leading and driven carriages 11 and 12 doors 13 and 14 doors. The kinematic link is made by means of a slider 15 fixed on one of the links of the chain 7, a slot 16 sliding along the groove, hingedly connected to the driving carriage 11 and acting by means of a cracker 17 fixed on it to the reversing mechanism of the leaves when they are braked during the closing movement the doors. To hold the wings 16 in a vertical position when there are no braking of the closing doors and when they are opened, a stop 18 is installed on the carriage I, to which the rocker 16 is pressed by means of a spring 19 connecting it with a stand 20 fixed on the carriage 11. The reversing mechanism of the doors is made the form of a horizontal link 21, located under the reversing contact 22 installed on the cab and hinged at its ends with vertical links 23 and 24, which in turn are hingedly attached to the uprights mounted on the cab 25 and 26, these units form a parallelogram scharnirny held in the working position by a return spring 27 connecting the link 21 with a rack 28 fastened to the cab. The slave carriage 12 is connected with the leading carriage 11 of the cable-block system, including blocks 29 and the endless rope 30, one of the legs of which is connected, with the carriage 11, and the other with the carriage 12. The drive works as follows. When the flaps are opened, the motor rotates the sprocket 2 clockwise, which via the chain 3 transmits the rotation of the sprocket 4, to the shaft 5 and the sprocket 6, and the latter through the chain 7 rotates the sprockets 8 and 9 also clockwise. In this case, the slider 15 from its position with the shutters closed (at point b in Fig. 2) rotates by 90 ° in a radius equal to the distance between the centers of the sprocket 8 and the slider 15, which slides along the groove a of the wings 16 simultaneously moving the carriage 11 from speed from zero with a slow increase to the maximum (at the point in Fig. 2) and further at a distance between the centers of the sprockets 8 and 9 with this maximum speed the carriage moves to the point g, after which the speed slowly decreases to zero B point d, so like from point g to point d crawl 15 turns At an angle of 90 ° along a radius equal to the distance between the centers of the sprocket 9 and the slide 15. Since the carriage 11 is connected to the carriage 12 by the cable-block system, the carriages and the swings attached to them open at the synchronous speed described by the V curve (Fig. 2). ). When closing the valves, the electric motor transmits the rotation of the sprockets 2, 4, 6, 8 and 9 counterclockwise and at the same time the slider 15 from its position with the doors open (at point e) moves the latter to close with the same speed as it opens. In case of braking of the closed shutters, for example in case of pinching of the passenger, the shutters stop, and the drive continues to work for closing. At the same time, the slider 15, which continues to move to the right in the drawing, tilts the slide 16 also to the right until it displaces the link 21 parallel to it through the cracker 17, which by acting on the reversing contact 22 switches the drive to the opening. In this case, the springs 19 and 27 will lead the rocker 16 and the link 21 to its original position. Claims 1. The drive of a sliding door of an elevator car, comprising an electric motor mounted on the cabin with a transmission consisting of a drive unit and one-half links around an endless traction body, kinematically connected with the leading and driven carriages moving along the guideway, equipped with a rope-block system, and a mechanism for reversing the movement of the flaps, characterized in that, in order to simplify the construction, increase the reliability and enable the drive to be used on cabins with different door widths opening, it is provided with scharnirno fixed to the carriage driving mechanism and cooperating with the reversing motion of the elevator car slats side scene, in which groove the slider is mounted, associated e endless tractive body. 2. The drive according to claim 1, characterized in that the reversing mechanism of the flaps is designed as installed in the cabin and with a pivotally hinged lever system which is spring-loaded relative to it. 3. The drive according to claim 1, characterized in that, in order to keep the wings in a vertical position, it is spring-loaded relative to the leading carriage, which is provided with an abutment interacting with the slide. Sources of information taken into account in the examination 1. France patent number 2250374, cl. E 05 F 15/14, published. 1975 (prototype) ..   “.