Belt-driven elevator without counterweight

A technology without counterweights and elevators, which is applied in elevators, transportation and packaging in buildings, etc. It can solve the problems of complex devices, guide elements wear, traction power, increase, etc., and achieve the effect of limited cost and high friction coefficient

Inactive Publication Date: 2012-11-14
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This prior art has the following disadvantages: the compensation system does not provide precise adjustment of the tension; the disclosed system is not suitable for using belts as traction members due to the fact that the pulleys are coaxial and require a lateral offset of the traction members, However this is not allowed with belts unless specific guide elements are provided, resulting in a more complex arrangement; moreover, the coaxially arranged pulleys create an overturning momentum on the car, which results in an overturning of the guide elements. Major wear and increased tractive power required

Method used

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  • Belt-driven elevator without counterweight
  • Belt-driven elevator without counterweight
  • Belt-driven elevator without counterweight

Examples

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Effect test

no. 1 example

[0034] Figures 1 to 5 It relates to an embodiment of the invention wherein the elevator without counterweight comprises a car 1 and a frame structure 2 with guide rails 2a, 2b for said car 1 . When the drive system is in operation, the car 1 moves in the vertical direction relative to the frame structure 2 . In this embodiment, the drive system comprises a single drive belt 3 arranged behind the car 1 .

[0035] The drive system comprises a plurality of stationary pulleys arranged in sets 4 fixed to the top element 5 of the frame structure, and sets 6 fixed to the bottom element 7 of the frame structure. The drive system also comprises movable pulleys arranged in sets 8 , 9 connected with the car 1 .

[0036] The pulley and belt arrangement can be easily changed from Figure 5 recognized in. from around the first anchor bolt P 1 The fixed terminals of the belt 3 respectively go around the pulleys 101 to 112 and reach the anchor bolts P 2 relative to the fixed terminal. ...

no. 2 example

[0048] Figures 6 to 8 Embodiments with multiple drive belts are involved. and Figures 1 to 5 Those corresponding parts are indicated by the same numerals.

[0049] In this example the elevator has two drive belts 3a and 3b. Embodiments with more than two belts are also possible.

[0050] The compensating means 30 are common between the two belts 3a and 3b, as Figure 6 shown. The belts 3a and 3b are wound around movable pulley blocks 8, 9 connected to the car 1 ( Figure 6 ), thus having a common compensating device 30 .

[0051] A first pulley set 8 is rotatably supported on a plate 20, fixed to the rear of the car 1, and a second pulley set 9 is rotatably supported on a plate 21, suspended to the plate 20 by means of pins 22, 23 and associated springs 26, 27 . Figure 6 express with Figure 4 The spring arrangement differs from the spring arrangement in which the spring abuts against a bushing fixed to the floating plate. Figure 4 or 6 spring arrangements are su...

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PUM

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Abstract

An elevator without counterweight comprising a drive belt (3) running over a respective plurality of pulleys (4, 6, 8, 9), wherein stationary pulleys (4, 6) are associated with the frame structure of the elevator, moving pulleys (8, 9) are associated with the cabin of the elevator, and wherein the moving pulleys are arranged in at least a first assembly fixed to the cabin, and a second assembly connected to said first assembly by a tensioning device (30) of said drive belt (3).

Description

technical field [0001] The present invention relates to a counterweightless elevator and related drive assembly. The invention relates in particular to a tensioning system for the traction members of such elevators. Background technique [0002] Counterweightless elevators have a self-supporting structure separate from the building's structure, which provides a significant cost reduction and makes them attractive for installation in smaller or older buildings. The lifting system can be arranged on one side or both sides of the car. For example, an elevator comprises a car, a frame structure with two vertical guide elements, and a drive system comprising a motor and traction members, eg hoisting ropes. [0003] A problem with such elevators is maintaining proper tension on the traction members due to the lack of counterweight. Considering thermal expansion, for example, a tensioning and compensating system is required to maintain the proper tension on the traction member. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B11/00B66B11/04
CPCB66B11/0045B66B11/0476B66B11/008B66B11/007
Inventor M.霍尔勒
Owner KONE CORP
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