RU2378180C2 - Elevator - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to elevator structure without machine room. Elevator contains installed in well (7) cage (3), guide ways (11) of cage, counterweight, guide ways of counterweight and driving engine (5), installed upwardly at least one guide way, herewith elevator cage is installed with ability of its direction by means of opposite top and bottom directional elements (9), installed with sliding or rolling ability by guide ways (11) of cage. One of top directional elements of cage is located at one side with driving motor and connected to cage at height, less than opposite top directional element.

EFFECT: invention provides reduction of rise restriction of cage.

6 cl, 2 dwg

Description

FIELD OF THE INVENTION

The present invention relates to elevators without a machine room, equipped with a special design of the guide device of the elevator car.

State of the art

Elements intended for the sliding direction of the elevator car along the car rails are known and are usually placed opposite each other at the same height at the upper and lower edges of the car, respectively, so as to ensure the maximum distance between the axes of the guide elements. However, in elevators without a machine room with a drive motor mounted in the upper part of the side wall, the upper sliding guide element of the cab located on the side of the drive motor can limit the height of the cab movement in the shaft, since this protruding side can get into the vertical projection area of the engine or bracket on which it is mounted.

Disclosure of invention

The invention is aimed at eliminating this drawback and provides a guide device for the elevator car, designed for use in elevators without a machine room and with a drive motor mounted in the upper part of the guide car to the shaft, in which the elevator car is guided by the opposite upper and lower guide elements made together with the cabin and sliding or rolling along the guides of the cabin, characterized in that it contains one of the upper guide elements of the cabin, located on one side with the drive motor or the bracket on which it is mounted, and connected to the cab at a height less than the opposite upper guide element, so that it makes it possible to advance the cab in the shaft to a greater height at which the top of the cab can be located opposite the drive engine or bracket to which it is mounted.

The downward displacement of said upper guide element located on the engine side relative to the height of the opposite upper guide element is from about 0.2 to 0.5 m, so that a reduced distance between the axles compared to the usual vertical distance between the central axes, the magnitude of which is from 2.2 to 3 m depending on the size of the cab, it is small and has little effect on the direction of the elevator car on the engine side, at which the direction remains unchanged niya, as with the usual method of location on the opposite side.

The offset also includes the distance margin D provided for the case of abnormal cab overrun. As a result of this arrangement in accordance with the present invention, the cabin can be moved to an upper level close to the top of the elevator shaft, which, therefore, does not need to be done higher.

The specified guide element may be a shoe having a U-shaped groove in which the shoe slides along the corresponding guide of the cab, or it may be a roller guide element rolling along the guide.

The specified offset guide element is mainly mounted on the crossbar connected to the uprights of the carcass or arch of the cabin, and the crossbar is made with a recess or bent inward at the level of the guide element, so that this element protrudes as little as possible away from the elevator car.

The invention also relates to an elevator equipped with a cabin guidance device described above.

Brief Description of the Drawings

The invention is further illustrated in the exemplary embodiment with reference to the accompanying drawings, in which:

Figure 1 presents a perspective view of the frame of the cabin with guide shoes;

Figure 2 presents a top view showing the device shoe cabin, offset in height on its crossbar; and

Figure 3 presents the cross section of the shaft, which shows the position of the cabin at the upper level of the shaft.

The implementation of the invention

In the drawings, and in particular in FIGS. 1 and 3, respectively, an arch 1 of an elevator car without an engine room is shown, wherein the car 3 and the counterweight are driven by an engine 5 mounted above (FIG. 3) located in the upper part of the shaft 7 on it the wall. The engine 5 is compact and has a shape elongated along the shaft wall in the horizontal direction, but its vertical projection overlaps the area in which the guide shoe 9 is located on the engine side.

The engine 5 is fixed at the top of the cabin guide 11 and two opposed counterweight rails 13 between which a counterweight (not shown) slides on the same side.

On the elevator car 3 there are four guide shoes 9, two at the top and two at the bottom, which are located in one vertical plane of the car. These shoes 9, which are usually U-shaped in cross-section, slide along two guides 11 directed towards each other on each side of the cab. The lower shoes 9 are usually attached to the vertical guard 15 of the cab frame support and are located opposite each other at the lower edge of the cab (at the same height). The shoe 9, opposite the shoe 9, located on the engine side, is also usually mounted at the upper edge of the elevator car on the upper crossbar, fastened at its ends with the struts 19 of the cab arch.

The upper shoe 9, located on the engine side, is offset downward relative to the shoe on the opposite side by about 0.4 m and, therefore, relative to its normal position at the upper edge of the elevator car.

This displacement is small relative to the usual distance between the axes of the shoes, which in this case is approximately 2.2 m, and has little effect on the quality of the direction of the cabin, compared with the quality of the direction with the usual distance between the shoes.

The height-shifted shoe 9 is fixed on its crossbeam 21, connected at its ends at a selected height with the struts 19 of the cab arch.

This bar 21 is bent (FIG. 2), so that it forms an inner recess 23 in which the shoe is placed. This recess 23 is bounded by two opposite shelves 25, tilted inward, and has a flat base on which the shoe can be placed at various points along the entire length in accordance with the position of the shoe on the cab. The crossbar wall, facing inward, is located near the panels 27 of the skin of the cabin, which limits the amount of internal recess. The presence of a recess 23 allows to reduce the distance by which the shoe protrudes from the outside of the cab, and thus move the corresponding guide closer, which makes it possible to reduce the cross-sectional area of the shaft.

A cabin with such a displaced height shoe arrangement can rise to the upper level, as shown in FIG. 3, in a position in which its upper part 29 (crossbar) is located against the engine 5 and, therefore, at a small distance from the shaft ceiling 31, with The upper shoe does not interfere with such a lift of the cab. A margin of D should be provided for the distance between the shoe and the engine, for example, equal to 0.15 m, taking into account the effect of some overrun of the cab or a malfunction in the drive, leading to the cab moving beyond normal limits.

The shoes 9 can obviously be replaced with roller guides rolling along the cab guides.

Claims (6)

1. An elevator without an engine room, located in the shaft and equipped with a cabin, cabin guides, a counterweight, counterweight guides and a drive motor mounted at the top of at least one guide, the elevator car being installed with the possibility of guiding it by means of opposite upper and lower guide elements installed with the possibility of sliding or rolling along the guides of the cab, characterized in that one of the upper guiding elements of the cab is located on one side with the drive motor body and connected to the cabin at a height less than the opposite upper guide element. 2. The elevator according to claim 1, characterized in that the downward displacement of the specified upper guide element located on the engine side relative to the height of the opposite upper guide element is from about 0.2 m to 0.5 m 3. The elevator of claim 2, characterized in that the indicated displacement also includes the distance D margin taking into account any abnormal cab run-out. 4. The elevator according to claim 1, characterized in that said guide element is a shoe with a U-shaped groove placed with the possibility of sliding the shoe along the corresponding guide rail of the cab. 5. The elevator according to claim 1, characterized in that said guide element is a roller guide element mounted with the possibility of rolling along the guide of the cab. 6. The elevator according to claim 1, characterized in that said guide element is mounted on a crossbar connected to the uprights of the carcass or arch of the cabin, the crossbar being made with a recess in which said guide element is placed.

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