Static structures (e.g. – buildings) – Including component designed to receive a disparate article... – Mounted for movement
Patent
1989-10-02
1991-05-07
Murtagh, John E.
Static structures (e.g., buildings)
Including component designed to receive a disparate article...
Mounted for movement
52 791, 52745, 521221, 52DIG12, E04B 134, E04B 1348
Patent
active
050126210
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention provides a lift shaft comprising a stack of separate self-supporting prefabricated shaft modules, each module having a structural strength sufficient to support the module or modules above, whereby the shaft can be supported from a lower module; an uppermost module containing winding apparatus for a lift car and a counterweight to raise and lower the car and a counterweight in the shaft; and each module having door means operable in conjunction with the lift car to provide access to and from the car when the car is disposed in the respective module.
2. Description of Background and Relevant Information
The lift shaft system defined above provides a much faster way of installing and commissioning lifts involving prefabricating lift shaft modules including lift motor rooms for erection on site.
The lift shafts are made, preferably, of sheet steel sections which are joined together to form tubes with open tops and bottoms.
These tubes are typically sized to meet individual building floor to floor height dimensions and the number of lifts required in each shaft. The only restrictions imposed on the sizing of the shafts is determined by transportation or crane capacity limitations.
A lift shaft construction of this kind is known from the DD-PS 90 202. The shaft modules are made of sheet steel or plastics. The lowermost module is bolted on a base plate. The upper and lower peripheries of the modules have flange fittings with guide brackets. Once stacked, the modules are bolted or bonded. The uppermost module contains the equipment to raise and lower the lift car in the shaft. The main disadavantage of the known lift shaft construction lies in the extensive requirement for skilled on-site labor for lift installation work. Another disadvantage is that for the inherent equipment of the modules, there is neither a weather proof nor a dirt-proof protection during transport and on site installation work.
SUMMARY OF THE INVENTION
The invention has the purpose of the creation of lift shaft modules enabling an economical and simple erection of lift shafts.
The advantage attained by the invention is to be seen substantially in that the lift shaft modules with all the equipment can be fitted under factory conditions away from the building site.
The lift shaft modules are designed so that they can be used as containers for fully assembled lift cars and/or counterweights between the factory and the building site so that a lift shaft module can be craned into position with complete car and/or counterweight. One of the modules is prefabricated with the lift car and/or counterweight installed and temporarily supported in the module for transport to a direction on site, the arrangement being such that once the module has been erected, the car and the counterweight are coupled to the winding means in the uppermost module and the temporary support for the car and the counterweight in the module is then released to enable the car and the counterweight to be raised and lowered in the shaft.
Each storey-height lift shaft module leaves the factory as a sealed weatherproof container-like unit. The top and bottom openings of each lift shaft module are sealed with translucent glass fibre-reinforced plastic (G.R.P.) covers. The bottom cover is removed on-site shortly before each module is craned into position. The top cover remains until shortly before the next module is due to be placed in position.
The ribs of the channel sections of the lift shafts are spaced and sized to facilitate the attachment on-site of plasterboard sheets which provide the requisite fire resistance for the lift shafts. The design of the channel sections is such that they can be used as permanent shuttering for in-situ concrete lift shafts if required (as described in U.K. Patent No. 2015615).
The design of the joints between each lift shaft section is such that they can be plumbed and levelled quickly and accurately. Tolerances achieved are far lower than those normally possible for tradition
REFERENCES:
patent: 3110907 (1963-11-01), King
patent: 4095380 (1978-06-01), Dillon
patent: 4231148 (1980-11-01), Harding
Power Leslie
Prewer John
Inventio AG
Murtagh John E.
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