US 3332517 A
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July 25, 1967 A. VOSER 3,332,517
GUIDING DEVICE FOR ELEVATOR Filed April '7, 1966 I 2 Sheets-Sheet 1 Fig. 1
INVEN T0 R HLBERT vosER July 25, 1967 A. VOSER 3,332,517
GUIDING DEVICE FOR ELEVATOR Filed April '7, 1966 2 Sheets-Sheet 2 Fig.3
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I! 1 .f 'fi 8 a 11 12 -INVENTOR ALBERT VOSER Mm Mw United States Patent 3,332,517 GUIDING DEVICE FOR ELEVATOR Albert Voser, Ebikon, Lucerne, Switzerland, assignor to Inventio Aktiengesellschaft, Hergiswil, Switzerland Filed Apr. 7, 1966, Ser. No. 540,903
Claims priority, application Switzerland, Apr. 7, 1965,
4,974/65 6 Claims. (Cl. 187-95) ABSTRACT OF THE DISCLOSURE A construction for resiliently supporting an elevator cabin on a lifting frame is disclosed. In the single embodiment shown, the elevator cabin is shown within an elevator frame structure on a resilient support which provides means for measuring the load of the elevator. In order to accomplish this, the cabin housing is supported on springs adjacent each corner on lateral frame members Which are held within the outer elevator frame. The frame includes an upper yoke beam which is usually secured to the carrying cables for the elevator.
In accordance with the invention, the upper portion of the cabin is guided in respect to the vertical members of the frame so that the elevator can move relative to the frame under load on its resilient mountings in a vertical direction only. A connection is provided between the top of the cabin and either the side frame members or the cross frame members of the frame. In the embodiment shown in the drawing the connection is to the side frame members and is advantageously arranged on each side of the cabin and comprises a spring steel band which is disposed in a substantially horizontal plane. The band is centrally clamped to an element secured to the cabin and it is clamped at each outer end to an element carried by the frame. The construction is such that the spring band will be resilient only in the vertical direction relative to the band playing and thus it will permit vertical movement upwardly and downwardly in accordance with the weight of the elevator.
Because the band construction prevents horizontal movement, there will be no one-sided loading and the cabin can move in a vertical direction in the suspension frame. 1
This invention relates in general to elevator construction and in particular to a new and useful guiding device for the housing of an elevator cabin or car.
In the construction of elevators it is frequently necessary to control certain switching operations in dependence on a given load in the elevator. For example, it is customary to render the outside control of the elevator ineffective when a predetermined load is present. Also it is customary in collective controls to prevent the operation of certain outside signals when the maximum permissible load has been reached. In addition, the starting and stopping operations of the elevator are performed in dependence on the load in order to achieve a jolt-free start and an exact stopping at floor level. For this purpose, the amount of the load has to be measured which is effected by means of a load measuring device which is arranged at the elevator cabin. This device consists of a stepwise or continuously operating load measuring device which is actuated by a movable floor which is resiliently supported at the cabin housing or by the cabin housing being supported in a suspension frame by means of springs.
A load measuring device has to operate independently of the location of the load on the elevator floor. For this purpose, a movable floor is sometimes employed which requires an expensive arangement to ensure that the floor can only move in parallel planes. By supporting the cabin housing on springs arranged at ends of suspension frame 3,332,517 Patented July 25, 1967 elements, it is possible to accomplish this in a considerably simpler manner Which is therefore preferred. The suspension frame may consist, for example, of a lower crossbeam, two vertical U-beams arranged alongside the respective two opposite sides of an elevator cabin or housing and a yoke beam connecting the vertical beams above the housing. The carrying cables are usually secured to the yoke beam. Two supporting angles are secured to the lower crossbeam. The cabin housing is supported on these supporting angles by means of springs. In order to prevent an oblique position of the cabin housing in the event of one-sided loading, a guiding or control device guides the housing from above in such a manner that it can move in the suspension frame in a vertical direction only.
According to a known embodiment of the control device, the two vertical U-beams are constructed as guide rails, the outer sides of the webs and shanks forming guiding surfaces with the web being arranged on the side of the housing wall and being parallel thereto. Two guide shoes are secured on the housing ceiling and each shoe will abut against the three guiding surfaces on one of the two beams. Such a guiding device, however, has the disadvantage that, in the event of a one-sided loading of the cabin housing, the guide shoes exert a pressure on the guiding surfaces. This, however, results in a friction force directed opposite to the load at the cabin housing.
In accordance with the present invention there is provided a guiding device for the elevator housing or elevator cabin which is supported within a frame'on springs to permit its relative vertical displacement in respect to the frame, and which also includes a connection between the top of the housing and either the side frame members or the cross frame members. The connection forms a guiding device for the elevator and it comprises a spring steel band which is arranged outside the cabin and disposed in a substantially horizontal plane, with either one of the housing member or the frame member being secured to the two 'ends of the band and the other of the members being secured intermediate the length of the band. The construction is such that the spring band will be resilient only in the vertical direction relative to the band plane. It will permit vertical movement upwardly and downwardly in accordance with the weight of the elevator. Because the band construction prevents horizontal movement, there will be no one-sided loading, and the housing can only move in a vertical direction in the suspension frame. Even in the event that the elevator is loaded from one side to a great extent, no frictional forces will be present in the guiding device which would render measurement of the load inaccurate.
Accordingly, it is an object of the present invention to provide an elevator cabin guiding device permitting slight vertical movement of the cabin with respect to its associated frame.
A further object of the invention is to provide an elevator mounting arrangement which includes a supporting frame having cross angle members with springs for supporting an elevator cabin and with guiding means permitting controlled vertical movement projecting adjacent the top of the elevator and secured between the cabin and the frame which includes a flat band member which is resiliently connected at its outer ends to one of either the frame or the cabin and centrally to the other of the frame and the cabin.
A further object of the invention is to provide a guiding device for the housing of an elevator cabin which is simple in design, rugged in construction and economical to manufacture.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages and specific objects attained by its use, reference should be had to the accompanying drawings in which there is illustrated and descirbed a preferred embodiment of the invention.
In the drawings:
FIG. 1 is a perspective view of an elevator constructed in accordance with the invention;
FIG. 2 is a partial side elevational view of the top of an elevator cabin and its associated frame; and
FIG. 3 is a partial top plan view of the guiding device indicated in FIG. 2.
Referring to the drawings in particular, the invention embodied therein comprises an elevator housing or cabin generally designated 1 which is centered within a carrier or suspension frame generally designated 2. The housing 1 is of generally rectangular configuration and consists of walls 1.1, floor 1.2, and ceiling 1.3. The suspension frame 2 comprises two lower cross beams 2.1, 2.1 at the bottom, two yoke beams 2.2, 2.2 at the top and two vertical U-beams 2.3, 2.3, the latter two being arranged at respective opposite sides of the housing 1. Two supporting angles 3.3 are secured at respective opposite ends of the lower crossbeams 2.1 and support the housing or cabin 1 crossways at the frame 2, with the floor 1.2 thereof movably supported on the supporting angles by means of compression springs 4 which are arranged at the four corners. The top of the housing is held by means of guiding devices generally indicated 5 in FIG. 1 which engage between the ceiling 1.3 and the frame 2. In the embodiment illustrated, they are indicated as being connected to respective vertical U-beam members 2.3 and 2.3.
As best seen in FIGS. 2 and 3, the control device or guiding device 5 comprises a spring band generally designated 6 which is clamped at its both ends 6.1, 6.1 to the suspension frame 2 at the location of a vertical U-beam 2.3. For this purpose, at each side of the vertical U-beam 2.3 an angle iron 7 is secured such as by welding. The band is clamped between clamping jaws 8, 8 which are engaged over a threaded bolt member 9 which also penetrates through an opening (not shown) defined in the band 6. Nut 10 i tightened on the threaded member 9 in order to cause the clamping jaw elements 8, S to be brought into tight bearing engagement with the band 6.
A similar construction is provided in respect to a threaded pin or bolt member 11 which is secured at its one end to the roof 1.3 of the elevator and is provided with an upper threaded end having a nut 13 located above and below clamping plate or jaw members 12, 12 which bear on opposite sides of the band 6. After the lower nut 13 is positioned at the desired elevation, the upper nut is tightened down by threading it on the bolt member 11 until it causes the jaw members 12 to tightly bear against opposite sides 0 fthe band 6. The outer or opposite end of the band 6 is secured in position to the other angle iron 7 in a manner similar to the first angle iron.
Spring band 6 is resilient only in a vertical direction relative to the band plane. Thus, it permits only vertical movement of the thread pin 11 and prevents any horizontal movement of the thread pin 11. Therefore, even in the event of a one-sided loading, the housing 1 can only move in a vertical direction in the suspension frame. The particular advantage, however, of this manner of securing a spring band 6 resides in the fact that even in the event of one-sided loading, no friction forces will be present which would otherwise render measuring of the loading inaccurate.
In some instances it is preferable to secure the band 6 between the cabin 1 and the two yoke beams 2.2. In such instances, a band connection may advantageously be made adjacent each end of the yoke beams or it would even be possible to provide a single band at the center. The connection, of course, may also be made from a location below the ceiling 1.3 at one of the side walls 1.1. With such a construction, an auxiliary framing would have to be made in order to support the band in a horizontal plane. The housing 1 may be secured to the ends of the band, if desired, and the frame member may be secured centrally, or the construction may be as indicated in FIGS. 2 and 3.
While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the invention principles, it will be understod that the invention may be embodied otherwie without departing from such principles.
What is claimed is:
1. A guiding device for an elevator comprising a supporting frame, an elevator cabin located within said frame, means supporting said cabin resiliently within said frame, and a guiding device connected between said frame and the upper portion of said cabin comprising at least one spring steel band disposed substantially in a horizontal plane, said band being secured to said supporting frame and to said cabin by a central securement intermediate the length of said band to one of said supporting frame and said cabin and by a securement adjacent each of the ends of said band to the other of said supporting frame and said cabin.
2. A device according to claim 1, wherein said cabin is connected centrally to said band, said band being connected adjacent its respective ends to said frame.
3. A device according to claim 1, wherein said band is connected to a vertical member of said frame.
4. A device according to claim 1, wherein said connection of said band to said frame includes a bolt member, said band having an opening through which said bolt member extends, a clamping plate engaging said band on each side thereof and being carried on said bolt member, and threaded nut members on said bolt member for tightening said clamping plates on each side of said band.
5. A device acording to claim 4, wherein said bolt member is carried on the roof of said cabin.
6. A device according to claim 5, including an angle iron on each side of a vertical side member of said frame, said bolt member extending through said angle irons and securing each end of said band to said frame.
References Cited UNITED STATES PATENTS 1/1943 Sahlin 18795 1/1943 Kiesling 18795