Patent Grant
6857508
The present invention relates generally to elevator hoisting machines and more particularly to an apparatus or tool for installing an elevator hoist machine in an elevator hoistway typically on the upper terminal end of the guide rails in an elevator hoistway.
The prior art discloses certain apparatus capable of mounting an elevator hoist machine in the vicinity of the ceiling of an elevator hoistway wherein the clearance between the ceiling and the support for the hoist machine is minimal.
A publication No. 2000034072A of a Japanese patent application No. 10203378 discloses a mounting device for an elevator hoisting machine equipped with a loading space part mounted with a hoisting machine, a load lifter consisting of a counterweight frame extendedly installed in a position lower than the loading space part. A winch is provided in the lower part of the hoistway to effectively lift the load lifter and the hoisting machine up to the vicinity of the ceiling of the hoistway. When the hoisting machine is lifted up to the vicinity of the ceiling of the hoistway by means of suitably provided lifting ropes, interference between other members is avoided.
Other means for installing hoist machines in elevator hoistways permit the hoisting and positioning of the machine from lifting beams above the supporting structure and lifting attachments above the bottom of the machine.
The present invention relates to an apparatus for installing an elevator hoist machine in an elevator hoistway capable of lifting the machine in an open elevator shaft area between guide rails with means to position the machine over supporting structure of the top of the rails.
The apparatus or tool for installing an elevator hoist machine to a machine support affixed to generally vertically extending guide rails within an elevator hoistway, comprises a carriage for conveying the hoist machine with an associated elevator hoistway; a support for the carriage, the support including a generally horizontally extending beam member, the beam member extending outwardly into the elevator hoistway and terminating in spaced relation from the guide rails, wherein the carriage may be selectively positioned on the support; and an attachment assembly for attaching the support to a hoist for imparting selective vertical movement of the carriage and the support along the guide rails within any elevator hoistway to deliver a hoist machine to position of use on the machine support.
The above, as well as other advantages of the present invention, will become readily apparent to those skilled in the art from the following detailed description of a preferred embodiment when considered in the light of the accompanying drawings in which:
Referring to the drawing, there is illustrated a tool for installing elevator hoist machines in an elevator hoistway. The tool or system has been found to be particularly useful to lift, lower, and position a hoist machine in a hoistway that does not have a conventional machine room.
The illustrated embodiment consists of a structural frame 10 adapted to be assembled around an elevator guide rail 12 designed to extend vertically within an elevator hoistway. The elevator guidance system may be of the type manufactured and sold by Schindler Elevator Corporation and designated as a tri-rail elevator guidance system. In such a system, the structural frame 10 is assembled around the three rails of a tri-rail elevator guidance system.
The main frame 10 includes vertical upright members 14 and guide shoes 16. The guide shoes 16 typically interface with the guiding surfaces of the rails 12 to provide for relative vertical movement of the upright members 14 on the guide rails 12. The main frame 10 also functions as a guide means for the carriage 22 and includes spaced apart guide members 18 connected to the vertical upright members 14 and containing guide shoes 20 coupled thereto for relative horizontal movement thereon.
A hoist machine carriage 22 is connected to the guide shoes 20. The carriage 22 includes horizontal base members 24 coupled to the guide shoes 20, upstanding vertical members 26, and an upper frame 28 integral with the upper ends of the vertical members 26. The carriage 22 is provided to support a hoist machine 30. The hoist machine 30 includes a base 32 to be permanently affixed to a machine support 34 mounted on the upper terminal ends of the guide rails 12.
In order to impart vertical movement to the main frame 10 and the associated hoist machine carriage 22, there is provided an attachment means in the form of a beam 36 which extends below and is affixed to the spaced apart guide members 18.
It will be appreciated that initially the main frame 10 and the hoist machine carriage 22 are positioned at a lower level in the associated elevator hoistway to receive the hoist machine 30. The hoist machine 30 is typically positioned on the carriage 22 so that only minimal movement thereof will be required to effect proper alignment of the base 32 and the support 34. Once the hoist machine 30 is suitably positioned on the carriage 22, hoist ropes, not shown, are connected to the cross beam 36 and the entire main frame 10, the carriage support 22, and the hoist machine 30 are lifted to the uppermost position illustrated in FIG. 1. When the assemblage reaches this position, machine carriage 22 is caused to be slid horizontally over the horizontal guide members 18 to a position where the base 32 of the hoist machine 30 is superposed over the support 34 and the attachment holes are aligned. Finally, the main frame 10 is lowered slightly allowing the entire load of the hoist machine 30 to be carried by the support 34, and the machine carriage 22 is caused to be slid horizontally away from guide rails 12 and lowered to a lower position.
The aforedescribed system may be effectively utilized to lift, lower, and position an elevator hoist machine into operative position on the upper terminals of guide rails in an elevator hoistway which does not have a conventional machine room. Guidance for the system is typically achieved by the rails of a previously installed elevator guide rail system. Also, the system permits the location or placement of an elevator hoisting machine in the open elevator shaft area between the guide rails and provides a means to shift the position of the machine laterally over the machine supporting structure at the top of the guide rails. Further, the system may be satisfactorily used in low overhead shaft conditions where conventional hoisting means would require building alterations and could not be employed.
In accordance with the provisions of the patent statutes, the present invention has been described in what is considered to represent its preferred embodiment. However, it should be noted that the invention can be practiced otherwise than as specifically illustrated and described without departing from its spirit or scope.
| Number | Name | Date | Kind |
|---|---|---|---|
| 2787278 | Mitchell | Apr 1957 | A |
| 3240372 | Joyce et al. | Mar 1966 | A |
| 4311434 | Abe | Jan 1982 | A |
| 4546854 | Bocker | Oct 1985 | A |
| 4710091 | Ochiai et al. | Dec 1987 | A |
| 4793437 | Hanthorn | Dec 1988 | A |
| 4797055 | Tworoger et al. | Jan 1989 | A |
| 5833031 | Liebetrau et al. | Nov 1998 | A |
| 5915913 | Greenlaw et al. | Jun 1999 | A |
| 6357556 | Pettersson et al. | Mar 2002 | B1 |
| 6422352 | Pettersson et al. | Jul 2002 | B1 |
| 6595330 | Henrickson et al. | Jul 2003 | B1 |
| Number | Date | Country |
|---|---|---|
| 1 245 522 | Oct 2002 | EP |
| 2000034072 | Feb 2000 | JP |
| Number | Date | Country | |
|---|---|---|---|
| 20040084251 A1 | May 2004 | US |
