Belt and sheave arrangement with linear guidance for an elevator
A belt and elevator technology, applied in transportation and packaging, lifting equipment in mines, elevators, etc., can solve the problem of not always reliably preventing the lateral sliding of the belt and the sheave
Inactive Publication Date: 2018-11-23
INVENTIO AG
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Problems solved by technology
However, it has been observed that even such countermeasures do not always reliably prevent the described lateral slippage between the belt and the sheave
Method used
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Embodiment Construction
[0066] figure 1 , figure 2 and image 3 An exemplary embodiment of a belt 1 for a suspension traction device of an elevator is shown in plan view, cross section and longitudinal section. Belt 1 comprises a plurality of longitudinal load bearing members 3 and a sheath 5 enclosing these load bearing members 3 .
[0067] The carrying member 3 may be a wire, a string, a cord or the like. The carrying member 3 may be made of metal or synthetic material (for example carbon fiber or similar). The carrier member 3 may have a cross-sectional dimension in the range of a few millimeters to a few centimeters. For example, in the typical case of a load-bearing member having a circular cross-section, the diameter of the load-bearing member may generally be between 1 mm and 5 cm, preferably between 0.5 cm and 3 cm. The carrier member 3 is arranged along the longitudinal extension direction 2 of the elongated belt 1 . Thanks to the plurality of load-carrying members 3, the belt 1 is ad...
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A belt (1) and a sheave (21) for an elevator are proposed. The belt (1) comprises a plurality of elongate load carrying members (3) and a jacket (5). The jacket(5) is provided with one or more recesses (7) being arranged along a straight line parallel to an extension direction of the belt (1) at a centre of the jacket (5). The recesses (7) have a deep depth extending at least down to a level between two neighbouring load carrying members (3). Preferably, the recesses (7) are provided as slits throughout the jacket (5). Furthermore, the recesses (7) have lateral flanks (11) being arranged at anangle of more than 60 degrees to an extension plane of the belt (1). The sheave (21) comprises a main body (23) with a cylindrical traction surface (25) and a sprocket (27).The sprocket (27) is arranged coaxial with the cylindrical traction surface (25) and is arranged at a centre of the cylindrical traction surface (25) with respect to a longitudinal extension (45) of the cylindrical traction surface (25). One or more teeth (33) of the sprocket (27) extend outwardly beyond the cylindrical traction surface(25). The sprocket (27) is connected to the main body (23) via a bearing such as to be rotatable relative to the main body (23). The teeth (33) of the sprocket (27) at the sheave (1) may engage and cooperate with the recesses (7) or slits of the belt (1) such as to prevent any lateral slippage or jumping of the belt (1) on the traction surface (25) of the sheave (21).
Description
field of invention [0001] The invention relates to a belt for a suspension traction device of an elevator. Furthermore, the invention relates to a sheave to be applied in an elevator. Finally, the invention relates to an elevator comprising such a belt and a sheave. Background technique [0002] Elevators generally include elevator cars in which passengers or goods can be transported. In a common type of elevator, the elevator car is suspended from a suspension traction device (STM, sometimes called a suspension traction medium). Such hitch hitches typically include one or more ropes or straps. The STM can be displaced using a sheave acting as a motor-driven traction sheave, so that the elevator car suspended therefrom is for example displaced vertically throughout the elevator shaft. Furthermore, one or more sheaves used as pulleys can be used in elevators, for example to suspend an elevator car and / or a counterweight. [0003] In modern elevators, slender belts are of...
Claims
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Login to View More IPC IPC(8): B66B7/06B66B15/02B66B15/04
CPCB66B7/062B66B15/02B66B15/04
Inventor 艾简·R·V·纳瑞德罗希特·拉杰
Owner INVENTIO AG