Frame for a car of a passenger/freight elevator, and such a car and passenger/freight elevator

Abstract

The present invention relates to a frame (20) for a car (10) of a passenger/freight elevator. The invention further relates to a car provided with such a frame. Finally, the invention also relates to an elevator comprising such a car. According to the invention the frame (20) comprises an upright (21, 22) having connected thereto a support (23, 24) which comprises two parts placed at an angle relative to each other, which parts are integrally connected. One part (23A, 24A) is connected here to the upright and the other part (23B, 24B) to a bottom part (33) of the car (10).

Claims

1. A frame for a car of a passenger/freight elevator, comprising a pair of uprights disposed parallel to each other and extending in a transport direction of the passenger/freight elevator, wherein each upright is coupled to a support, wherein each support comprises a first part and a second part integrally connected to the first part, which parts lie at an angle relative to each other, wherein the first part runs parallel to the upright and is coupled to the upright in a direction transversely of the transport direction and wherein the second parts of the supports extend in a plane for of supporting a bottom part of the passenger/freight elevator; wherein each support comprises a plurality of substantially identical strips, wherein the plurality of strips are placed adjacently of each other in a direction transversely of the transport direction for forming the support.

2. The frame as claimed in claim 1, wherein the frame is provided at an end remote from a bottom part with a first transverse connection between the pair of uprights and/or wherein the frame is provided at an end directed toward the bottom part with a second transverse connection between the pair of uprights.

3. A frame for a car of a passenger/freight elevator, comprising a pair of uprights disposed parallel to each other and extending in a transport direction of the passenger/freight elevator, wherein each upright is coupled to a support, wherein each support comprises a first part and a second part integrally connected to the first part, which parts lie at an angle relative to each other, wherein the first part runs parallel to the upright and is coupled to the upright in a direction transversely of the transport direction and wherein the second parts of the supports extend in a plane for supporting a bottom part of the passenger/freight elevator; wherein each upright is coupled to a further support, wherein the further support comprises a third part and a fourth part integrally connected thereto, which third and fourth parts lie at an angle relative to each other, wherein the third part runs parallel to the upright and is coupled to the upright in a direction transversely of the transport direction, and wherein the fourth part of the further support extends in a plane for the purpose of supporting a ceiling part of the passenger/freight elevator; and wherein the further support comprises a further transition part between, and integrally connected to, the third and fourth parts, and wherein each upright is provided at an end directed toward a ceiling part with a further recess through which the further transition part of an associated further support protrudes.

4. A car of a passenger/freight elevator, comprising a frame comprising a pair of uprights disposed parallel to each other and extending in a transport direction of the passenger/freight elevator, wherein each upright is coupled to a support, wherein each support comprises a first part and a second part integrally connected to the first part, which parts lie at an angle relative to each other, wherein the first part runs parallel to the upright and is coupled to the upright in a direction transversely of the transport direction and wherein the second parts of the supports extend in a plane for supporting a bottom part of the passenger/freight elevator; and wherein each support comprises a plurality of substantially identical strips, wherein a part of each of the strips which corresponds to the second part of the support and a bottom part comprise corresponding openings through which a coupling means is placed for coupling the strips to each other and to the bottom part.

5. The car as claimed in claim 4, further comprising a ceiling part provided with an opening in which the fourth part of the further support is at least partially received.

6. The car as claimed in claim 5, wherein the opening in the ceiling part is formed as a channel connecting to the fourth part of the further support.

7. The car as claimed in claim 5, wherein the fourth part of the further support and the ceiling part comprise corresponding coupling openings through which a coupling means is placed for coupling the further support to the ceiling part.

Description

(1) The invention will be discussed in more detail hereinbelow, wherein:

(2) FIGS. 1A and 1B show respectively a schematic view and a side view of a known elevator car;

(3) FIG. 2 shows an embodiment of an elevator car according to the present invention;

(4) FIGS. 3A and 3B show two embodiments of a frame for an elevator car according to the present invention;

(5) FIG. 4 shows an embodiment of a strip for the purpose of forming a support of FIG. 3A;

(6) FIG. 5A shows the bottom part of the car of FIG. 2 and FIG. 5B shows a front side of the car of FIG. 2; and

(7) FIG. 6 shows a side view of the coupling between support, upright and bottom part as according to the embodiment of FIG. 3A.

(8) FIGS. 1A and 1B show respectively a schematic view and a side view of a known elevator car 1. It will be apparent here that arranged on the underside is a reinforcement with height 2 for the purpose of strengthening the car such that it can bear a determined load. Because this height 2 is considerable, it has to be taken into account during placing of the elevator or during construction of the building in which the elevator is placed. Provided for this purpose on the underside of the elevator shaft in which the elevator is mounted is an elevator pit. It is however not always possible or desirable to make such a pit.

(9) FIG. 2 shows an embodiment of an elevator car 10 according to the present invention. It will be immediately apparent from this figure that the underside of car 10 does not protrude as far downward as car 1 of FIG. 1A. This is possible because of the specific frame construction according to the invention, embodiments of which are shown in FIGS. 3A and 3B.

(10) FIG. 3A shows a frame 20 comprising a pair of uprights 21, 22 and a pair of supports 23, 24 which are attached to uprights 21, 22. Uprights 21, 22 are mutually connected here by transverse connections 25, 26. It is noted here that supports 23, 24 are embodied as a series of strips which are disposed adjacently of each other. A detail view of such a strip 27 is shown in FIG. 4.

(11) Also visible in FIG. 3A are further supports 28, 29. These supports 28, 29 are similar to supports 23, 24 in respect of construction and are thus also embodied as a series of strips.

(12) Each support 23, 24 comprises a first part, such as part 24A for support 24, a second part, such as part 24B for support 24, and a transition part, such as part 24C for support 24. Transition part 24C here forms a transition between parts 24A and 24B. The different parts of supports 23, 24 are integrally connected to each other and are preferably manufactured integrally from a type of steel with sufficient hardness. An example of such a steel is known under material number 1.8974.

(13) The angle between the first part and the second part of support 23, 24 and the angle between the third part and the fourth part of further support 28, 29 are preferably such that, following assembly of an empty car, the bottom part lies perpendicularly of uprights 21, 22.

(14) Each of the strips 27 comprises a plurality of openings 30, see FIG. 3A. Inserted through these openings are bolts with which supports 23, 24 are connected to uprights 21, 22. Because an elevator car is usually constructed at the location where the car will actually be used, the plurality of strips provides advantages compared to a single integral component. This is because the weight of such a component would complicate the assembly considerably. The use of strips further provides the option of adjusting the carrying capacity of the car to the conditions. The carrying capacity of the car can after all be increased by placing more strips.

(15) The connection between strips 27 and the associated upright 21, 22 thus takes place using a plurality of bolts. Because the first part of supports 23, 24 extends over a considerable length along the associated upright 21, 22, it is possible to work with a relatively large contact surface between support 23, 24 and upright 21, 22. This increases the strength of the connection between support 23, 24 and upright 21, 22.

(16) Further supports 28, 29 can be coupled to supports 23, 24 by means of tensioning elements such as a tensioning cable, pull rod or tensioning beam (not shown). This achieves that a load exerted on the bottom of car 20 is distributed over supports 23, 24 and further supports 28, 29.

(17) The use of such supports is however not essential, as shown in FIG. 3B. Shown here is another embodiment of a frame 200 in which other further supports 31, 32 which do not consist of a plurality of strips are used on the upper side. Whether further supports 28, 29 have to be used depends on the expected loading of the elevator car.

(18) It will be apparent from FIGS. 3A and 3B that uprights 21, 22 take a hollow form in order to limit the weight of uprights 21, 22. Uprights 21, 22 can be embodied here as partially open tubular structures, for instance with a U-shaped cross-section, as shown in FIGS. 3A and 3B.

(19) In FIGS. 3A and 3B each of the uprights 21, 22 comprises three walls. The wall directed toward bottom part 33 does not run as far downward here as the other walls. The hereby created recess is utilized by the transition part of the associated support 23, 24. As shown in FIG. 6, the height of the transition part and the recess can be chosen here such that a substantially flat underside of the car can be realized.

(20) Per se known elements of an elevator car, such as wall elements and automatic sliding doors, can be mounted on frame 20, 200.

(21) FIG. 5A shows a bottom part 33 which can be coupled to frame 20 or frame 200. Bottom part 33 comprises for this purpose two openings in the form of channels 34, 35. Received in bottom part 33 are a number of bolts 36 which can be used to clamp supports 23, 24 in bottom part 33. It is relatively easy to adjust bottom part 33 using this construction. In another embodiment strips 27 likewise comprise openings at the position of bottom part 33. Bolts with which supports 23, 24 are attached to bottom part 33 can be placed through these openings.

(22) FIG. 5B shows a front side of the car. It will be apparent here that supports 23, 24 protrude slightly from channels 34, 35.

(23) FIG. 6 shows a side view of the coupling between support 23, upright 21 and bottom part 33 as according to the embodiment of FIG. 3A. Visible in this figure are bolts 37 with which support 23 is attached to upright 21. A strengthening plate 38 is used here. Further shown are guides 39, 40 which guide the elevator car in the elevator shaft. The manner in which the elevator car is guided in the elevator shaft is realized here in known manner.

(24) Ceiling part 41 of the elevator car, see FIG. 2, can likewise be provided with channels in similar manner to bottom part 33. This makes it possible to attach further supports 28, 29 of frame 20 to ceiling part 41 in simple manner.

(25) The invention is described in the foregoing inter alia on the basis of embodiments thereof. It will be apparent to the skilled person that various changes to these embodiments are possible without departing from the scope of protection of the present invention as defined by the appended claims.