FR2543933A1 - DEVICE FORMING ELEVATOR - Google Patents

Abstract

THE INVENTION RELATES TO A LIFT-FORMING DEVICE WHERE THE CAB CAN BE MOVED FROM TOP DOWN IN A CAGE BY A LIFTING CABLE WHICH IS WOUND ON A DEFLECTOR PULLEY ROTATING AT THE UPPER END OF THE CAGE, WITH ONE END OF THE CABLE FIXED. ON THE CEILING OF THE CABIN AND THE OTHER END CONNECTED TO A DRIVE MEANS LOCATED AT THE LOWER PART OF THE CAGE. ACCORDING TO THE INVENTION, THE DEFECTOR PULLEY 7 IS ROTATING SUPPORTED ON THE UPPER PART OF THE CAGE BY SUPPORT BEAMS 9 AGENCY BETWEEN THE WALLS OPPOSITE THE CAGE 1 AND PARALLELY TO THE WALL IN WHICH THE OPENINGS ARE SHAPED ENTRY SO THAT THE SUPPORT BEAMS ARE CLOSER TO THIS WALL THAN THE EXTENDED HYPOTHETICAL PLANE OF THE ENTRY SIDE OF THE CAB. THE INVENTION APPLIES IN PARTICULAR TO LIFTS FOR BUILDINGS WITH LOW STORIES.

Description

The present invention relates to a device forming an elevator and

  more particularly to an elevator device for reducing the clearance between the top of the cage and the ceiling portion of the cabin. First, for a better understanding of the invention, a conventional elevator device will be described with reference to FIGS. 1 and 2 of the attached drawings. In FIGS. 1 and 2, the reference numeral 1 denotes the cage, of cross-section

  generally rectangular, for an elevator, 2 repre-

  guide rails which are vertically installed in the cage 1 parallel to each other and which are fixed to the walls facing them by a number of legs 3, the reference numeral 4 designates an elevator car which can to be moved up and down along

  guide rails 2 by means of two vertical columns

  spaced apart from the sling holding the cabin, 6 is

  an upper beam of the sling that keeps it solid-

  5 is a baffle pulley capable of driving a hoisting rope 8, one end of which is fixed to the upper beam 6 substantially in its middle part and the other to a drive means (which will be described below) after changing the direction of the cable 8 upwards on 1800 by the pulley 7, and 9 designates two spaced support beams which are fixed at their ends to the walls opposite the cage 1 for rotatably supporting the pulley 7 between them by a shaft 10, and 11 is the drive means provided with a number of pulleys and can move the cab 4 by means of the hoisting rope 8, the driving means 11 being housed in a chamber 12 integrally formed with the cage 1 at its lowest part. The support beams 9 for supporting the deflector pulley 7 are disposed in an upper clearance which is formed between the lower surface of the crown 2 of the cage 1 and the lacabine ceiling portion 4 when it has been brought to its position. higher, and they are mounted, by their ends, to the walls vis-à-vis the cage 1 substantially at right angles and substantially by their middle portion as shown in Figure 2 In this case, the distance L between the surfaces lower of the upper beams 9 and the surface

  upper support beam 6 of vertical columns

  holds of the cab 4 sling shall, according to law,

  not be weaker than a minimum dimension

  This is so that a person engaged in the maintenance and inspection of the elevator device is assured of sufficient space to pass

  on the ceiling of cabin 4 when working.

  Thus, as a gap or a higher clearance is required by the maintenance and inspection at the upper part of the cage 1, in addition to the space required for the up and down movement of the cabin 4, this

  space for maintenance and inspection is

  This overtaking is particularly remarkable and undesirable in low-rise buildings such as three- or four-storey houses because it can pocket

  the sun to illuminate adjacent buildings

  This constitutes an obstacle to the installation of

  elevators in buildings with few stories.

  The present invention therefore

  purpose of which is an elevator device for eliminating

  the difficulties of an elevator device

  conventional as described above.

  Another object of the present invention is an elevator device which makes it possible to reduce the space required between the upper part of the cage and

  the ceiling part of the elevator cabin when

  that she is at her highest position.

  Another subject of the present invention is a device forming a lift o, in a building with few floors where an elevator must be installed, the part to be protruded from its roof is kept at a value

minimum or even eliminated.

  According to the present invention, an elevator device having a cab that can be suspended from a deflector pulley disposed near the top of a cage is provided, the support beams of the deflector pulley being arranged securely between the side walls to the cage, closer to the wall of the cage where the openings are formed

  only the plane on the entrance side of the cabin.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will become clearer during the description

  following explanatory diagram with reference to the accompanying schematic drawings given solely by way of example illustrating several embodiments of the invention and in which: Figure 1 is an elevational view of a conventional elevator device, in section;

longitudinal -

  Fig. 2 is a plan view of the elevator device shown in Fig. 1 in cross-section; Figures 3 and 4 are similar views

  in Figures 1 and 2 respectively, of a method of

  invention; and FIGS. 5 and 6 are views similar to FIGS. 1 and 2 respectively, of another embodiment of FIG.

embodiment of the invention.

  On all drawings, identical or

  analogues carry the same reference numbers.

  Referring now to FIGS. 3 and 4 of the accompanying drawings, there is shown an embodiment of the present invention which differs from the conventional elevator device of FIGS. 1 and 2 in that support beams 9 for supporting rotating the deflector pulley 7 are fixed to the walls vis-à-vis the cage 1 so as to be laterally offset towards the walls of the cage 1 o are formed the inlet openings In fact, the support beams 9 are fixed the walls vis-à-vis the cage 1 substantially at the same height as in a conventional elevator device, but closer to the wall in which are formed the inlet openings of the cabin 4 Thus, as the 3, the support beams 9 are arranged closer to the wall of the cage 1 in which the inlet openings are formed than the entry side of the cabin 4. At the same time, the deflection pulley7 and the guide rails 2 are also shifted towards the inlet opening side of the cabin 4. Thanks to this arrangement, the dimension L of the space or of the upper clearance, necessary for the maintenance and the inspection of the device forming elevator becomes

  the space between the lower surface of the upper

  Therefore, as shown in FIG. 3, the height of the cage 1 can be decreased by a quantity 1 equal to the distance between the upper part of the cage. and the lower surfaces of the support beams 9 This means that the exceeding of the cage 1 above the roof of a building is lower than for a conventional elevator, such as

  represented in FIGS. 1 and 2, of this quantity 1.

  Figures 5 and 6 show another way of

  embodiment of the present invention.

  In this embodiment also, the support beams 9 of the deflector pulley 7 are arranged closer to the wall of the cage 1 to which the entry side of the cabin 4 faces. However, this embodiment differs from the previous one by the that the support beams 9 are fixed at their ends

  to the guide rails 2 at their upper ends.

  With this construction, the guide rails 2 can

25439-2

  be installed from the entrance side of the wall of the cage 1, eliminating the use of scaffolding necessary in the installation of a conventional elevator device. Therefore, the installation price of this elevator-forming device may decrease. Moreover, by mounting the guide rails 2 on the input side, these rails can withstand the torque applied to the cab 4 The deflector pulley 7 is rotatably supported by the shaft 10 which is mounted on the support beams 9 and on anatures 13 , 14

fixed to support beams 9.

Claims (6)

R E V E N D I C A T I 0 N S   1. Elevator device of the type where the cabin is adapted to be moved up and down in a cage by means of a lifting cable which is wound around a deflector pulley rotatably mounted at the upper part of said cage, a end of said cable being attached to the ceiling portion of said cabin and the other end being connected to a driving means at the bottom of said cage, characterized in that the deflector pulley (7) is rotatably supported at the top of said cage by support beams (9) which are arranged between the walls facing said cage (1) and parallel to the wall thereof in which the inlet openings are formed so that said beams of support are placed closer to said wall than is the hypothetical plane elongated on the input side of said cabin.   2. Device according to claim 1, characterized in that the aforementioned upper beams have their ends which are fixed firmly to the   walls vis-à-vis the cage by any appropriate means.   3. Device according to claim 1, characterized in that the aforementioned support beams have their ends which are firmly fixed to guide rails (2) at their upper ends, said guide rails being arranged vertically in the cage parallel to the walls vis-à-vis by being spaced.   4 Device according to claim 1, characterized in that the cabin engages guide rails arranged vertically in the cage parallel but spaced from its walls vis-à-vis so that said cabin is moved up and down by being guided by said rails, and the deflecting pulley 254393 Z   and the guide rails are shifted towards the wall of the cage where are formed the inlet openings of the   same way as the support beams are.   5. Device according to claim 4, characterized in that a space is formed between the deflector pulley and the wall of the cage facing the wall in which are formed the inlet openings, said space being available at the time of the maintenance and inspection of said device forming elevator.   6. Device according to claim 4, characterized in that the cabin is provided on its outer surface with two vertical support frames and an upper beam which is connected at both ends to said vertical support frames at their end portions. higher, and said vertical support frames and said upper beam are offset towards the wall of the cage where are formed the   entrance openings in the same way as guide rails.