Elevator – industrial lift truck – or stationary lift for vehicle – Having specific stationary guiding structure for...
Patent
1997-06-19
1999-03-09
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific stationary guiding structure for...
187266, B66B 702
Patent
active
058788476
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an arrangement for fixing the elevator rope in an elevator and to an arrangement for the use of guide rails as supporting elements of an elevator and its equipment.
In traction sheave elevators, the ends of the elevator ropes are conventionally fixed to the elevator shaft or to anchorages in a machine room in the upper part of the elevator shaft. The other ends of the elevator ropes are usally fixed by means of springing elements. Similarly, the diverting pulleys of an elevator are typically mounted in the elevator shaft or in the machine room, but diverting pulleys mounted on an elevator guide rail are also known.
Previously known solutions for the fixing of elevator ropes have the drawback that the elevator ropes require a strong anchorage in the building and that the position of the anchorage in relation to the building, elevator, elevator shaft, elevator machinery and diverting pulleys must be closely defined. Therefore, fixing the elevator ropes by known techniques requires a long installation time because a holding element for a rope fixing element has to be installed first in the elevator shaft or machine room.
SUMMARY OF THE INVENTION
The object of the present invention is to produce a new arrangement for the fixing of elevator ropes, designed to facilitate the installation of elevator ropes and to reduce the installation time. Another object of the invention is to eliminate the need for mounting bases for elevator rope fixing elements mounted in the elevator shaft or in the machine room. A further object of the invention is to avoid the transmission of vertical forces of the elevator ropes to the building or to the shaft walls.
The invention has the advantage that the installation time and the total installation costs of the elevator are reduced. To achieve these advantages, the elevator guide rails are first fixed to the walls of the elevator shaft in a manner known in itself, e.g. to C-profile beams. Each end of the elevator rope is fixed to one of the guide rails. The guide rail ends can be provided with holes for the mounting of rope fixtures at the factory. The elevator machinery is mounted on one guide rail, and likewise a diverting pulley, so that all vertical forces of the elevator are transmitted via the guide rails to the bottom of the shaft. Therefore, the vertical forces impose no strain on the walls of the building. Thus, the exact position of the elevator is determined by the guide rails and the elevator imposes no vertical pressure on the building. As the elevator ropes are fixed to a guide rail, it follows that no mounting bases for rope fixing elements need to be installed, thus shortening the installation time.
The weight of elevator ropes fixed to a guide rail, that of the elevator car and counterweight supported by the ropes as well as the weight of an elevator machinery supported by a guide rail, in other words, almost all of the weight of the whole hoisting function is transmitted by the guide rails to the bottom of the elevator shaft. The transmission of internal forces of the hoisting function through the shaft bottom or walls is avoided. An example of a disadvantageous solution avoided by the invention is an elevator in which the elevator ropes apply an upward pull to an elevator machinery mounted on the shaft bottom and to the shaft bottom itself. The invention also obviates the labor and costs resulting from anchoring the machinery in the building.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following, an embodiment of the invention is described by the aid of drawings, in which
FIG. 1 presents a diagrammatic view of an elevator with ropes mounted according to the invention,
FIG. 2 presents a rope fixing element in cross-section, and
FIG. 3 presents a rope fixing element in top view.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1, the elevator car 2 of an elevator 29 moves vertically along a first elevator guide rail 4 and a second elevator guide rail 5 mounted in an elevator shaft 1. The counterweight
REFERENCES:
patent: 3845842 (1974-11-01), Johnson
Aulanko Esko
Hakala Harri
Mustalahti Jorma
Kone OY
Noland Kenneth
Tran Khoi H.
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