Elevator system for a building under construction

Abstract

The invention relates to an elevator system (10) for a building under construction, comprising a vertical shaft (12), in which a temporary machine compartment (14) is retained, a driving device (18), which is arranged in the temporary machine compartment (14) and which is coupled by means of a supporting cable (21) to a car (23) that can be moved vertically up and down in the shaft (12), and a speed limiter (30), which interacts with a speed limiter cable (34) arranged in the shaft (12). According to the invention, in order to develop the elevator system in such a way that the speed limiter cable (34) can be extended in a simple manner when the temporary machine compartment (14) is moved without said action leading to permanently increased energy consumption of the elevator system (10), the speed limiter (30) is arranged on the car (23) or on a counterweight (25) connected to the car (23) by means of the supporting cable (21), and that the speed limiter cable (34) has a first and second cable section (32, 52), wherein the first cable section (32) is clamped in a stationary manner between a cable retainer (46) connected to the temporary machine compartment (14) in a stationary manner and a releasable clamping device (50) arranged in a lower shaft region (48) and the second cable section (52) is connected to the first cable section (32) in the lower shaft region (48) and is stored in a storage region.

Claims

1. An elevator system for a building under construction, the elevator system comprising: a temporary machine compartment disposed in a vertical shaft of the building under construction; a drive device that is disposed in the temporary machine compartment and is coupled via a supporting cable to a car that can be made to move upward and downward in the vertical shaft; and a speed limiter for limiting a speed of the car, wherein the speed limiter cooperates with a speed limiter cable disposed in the vertical shaft, wherein the speed limiter is disposed on the car or on a counterweight connected to the car via the supporting cable, wherein the speed limiter cable has a first cable section and a second cable section, wherein the first cable section is clamped in a positionally-fixed manner between a cable retainer that is connected in a positionally-fixed manner to the temporary machine compartment and a releasable clamping device disposed in a lower shaft region, wherein the second cable section is connected to the first cable section at the releasable clamping device in the lower shaft region and is stored in a storage region.

2. The elevator system as claimed in claim 1, wherein the storage region is disposed in the vertical shaft.

3. The elevator system as claimed in claim 1 wherein an end region of the second cable section is wound onto a cable drum in the storage region.

4. The elevator system as claimed in claim 3 wherein the vertical shaft has a pit and the cable drum is rotatably mounted in the pit.

5. The elevator system as claimed in one of the preceding claims wherein the releasable clamping device has a releasable cable clamp.

6. The elevator system as claimed in claim 5, wherein the releasable cable clamp cooperates with a clamping weight that can be made to move in the vertical direction.

7. The elevator system as claimed in claim 6 wherein the clamping weight has a carriage that is held on a guiding device such that the carriage can be displaced in the vertical direction, on which at least one weight element is held, and which is connected to the releasable cable clamp.

8. The elevator system as claimed in claim 7 wherein the guiding device has two guiding rails.

9. The elevator system as claimed in one of claims 1-4 wherein the car is guided on guiding rails.

10. The elevator system as in one of claims 1-4 wherein the storage region is disposed in the lower shaft region.

11. The elevator system as in one of claim 1, 3, or 4 wherein the storage region is disposed outside the vertical shaft.

12. An elevator system for a building under construction, the elevator system comprising: a temporary machine compartment disposed in a shaft of the building under construction; a drive device that is disposed in the temporary machine compartment and is coupled via a supporting cable to a car that moves within the shaft; and a speed limiter for limiting a speed of the car, wherein the speed limiter cooperates with a speed limiter cable that is disposed in the shaft and has a first cable section and a second cable section, the first cable section being clamped between a cable retainer that is connected to the temporary machine compartment and a releasable clamping device, the second cable section being connected to the first cable section at the releasable clamping device, which is disposed in a lower shaft region beneath the car.

13. The elevator system of claim 12 wherein an end region of the second cable section is wound onto a cable drum disposed in a storage region disposed outside the shaft.

14. The elevator system of claim 12 wherein the shaft includes a pit, wherein an end region of the second cable section is wound onto a cable drum disposed in the pit.

15. The elevator system of claim 12 wherein the releasable clamping device comprises a releasable cable clamp that cooperates with a clamping weight configured to move vertically.

16. The elevator system of claim 15 wherein at least the first cable section of the speed limiter cable is put in tension by the clamping weight.

17. The elevator system of claim 16 wherein the clamping weight comprises a carriage that is held on a guiding device that permits the carriage to move vertically.

18. The elevator system of one of claims 12-17 wherein the speed limiter is disposed on the car or on a counterweight connected to the car.

19. The elevator system of one of claims 12-17 wherein the first cable section is clamped in a positionally-fixed manner between the cable retainer and the releasable clamping device.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) The following description of an advantageous embodiment of the invention serves, in conjunction with the drawing, for a more detailed description. In the figures:

(2) FIG. 1 is a schematic representation of an advantageous embodiment of an elevator system according to the invention, which is installed in the shaft of a building under construction, and

(3) FIG. 2 is a perspective representation of a releasable clamping device arranged in a lower region of the shaft, for a speed limiter cable for the elevator system of FIG. 1.

(4) FIG. 3 is a schematic representation of another example elevator system similar to that shown in FIG. 1, except here an example speed limiter is disposed on the counterweight and a storage region is disposed outside the shaft.

DETAILED DESCRIPTION

(5) Although certain example methods and apparatus have been described herein, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all methods, apparatus, and articles of manufacture fairly falling within the scope of the appended claims either literally or under the doctrine of equivalents. Moreover, those having ordinary skill in the art will understand that reciting ‘a’ element or ‘an’ element in the appended claims does not restrict those claims to articles, apparatuses, systems, methods, or the like having only one of that element, even where other elements in the same claim or different claims are preceded by “at least one” or similar language. Similarly, it should be understood that the steps of any method claims need not necessarily be performed in the order in which they are recited, unless so required by the context of the claims. In addition, all references to one skilled in the art shall be understood to refer to one having ordinary skill in the art.

(6) The present disclosure generally relates to an elevator system for a building under construction. In some examples, such an elevator system may include having a vertical shaft within which is held a temporary machine compartment, a drive device that is disposed in the temporary machine compartment and is coupled via a supporting cable to a car that can be made to move upward and downward in the shaft, and a speed limiter for limiting the speed of the car. The speed limiter may cooperate with a speed limiter cable disposed in the shaft.

(7) FIG. 1 shows, schematically, a preferred embodiment of an elevator system 10 according to the invention, which is installed in a vertical shaft 12 of a building under construction. The elevator system 10 comprises a temporary machine compartment 14 which is releasably secured in the shaft with the aid of attachment members 15, 16. A drive device 18 for the elevator system 10, with a driving disk 19, which is driven by a motor and can be braked by means of a brake that is known per se (and is not shown in the drawing for the purpose of improved clarity), is positioned in the machine compartment 14.

(8) The drive device 18 is coupled to a car 23 and to a counterweight 25 via a supporting cable 21. The car is held in a vertically displaceable manner on first guiding rails 27, 28 which are secured in the shaft 12. Guiding rails (not shown in the drawing for the purpose of improved clarity) are also used for guiding the counterweight 25.

(9) The car 23 can be moved vertically upward and downward along the first guiding rails 27, 28 by means of the drive device 18 and the driving disk 19.

(10) In order to be able to limit the speed of the car 23 in the event of a fault, a speed limiter 30 is arranged on the car 23, which speed limiter cooperates with a first cable section 32 of a speed limiter cable 34. As explained above, in other examples such as that shown in FIG. 3, the speed limiter 30 may be disposed on the counterweight 25. The speed limiter 30 has, as is conventional, a cable roll 36 around which the first cable section 32 is guided in an Ω shape. Two deflection pulleys 38, 40 are used to feed the first cable section 32 to the cable roll 36. On the cable roll 36 there are arranged centrifugal bodies which are known per se to a person skilled in the art and are therefore not shown in the drawing for the purpose of improved clarity, and which, if the speed of the car 23 exceeds a predetermined value, connect the cable roll 36 via a linkage 44 to a gripping device 42 arranged on the car 23, which gripping device is then triggered by the cable roll 36. The gripping device 42 cooperates, via brake elements which are known per se to a person skilled in the art and are therefore not shown in the drawing for the purpose of improved clarity, with the first guiding rails 27, 28, such that, if the speed of the car 23 exceeds a predetermined value, the car 23 is braked by means of the brake elements of the gripping device 42.

(11) The first cable section 32 is clamped between a cable retainer 46 that is arranged in a temporary machine compartment 14 and a releasable clamping device 50 arranged in the lower region 48 of the shaft 12. A second cable section 52 connects to the first cable section 32 of the speed limiter cable 34 in the lower shaft region 48, the end portion of which second cable section is wound, in the embodiment shown, onto a cable drum 56 that is mounted rotatably on the floor 54 of the shaft 12. The lower shaft region 48 thus forms a storage region for the second cable section 52. Alternatively, as illustrated in FIG. 3, for instance, the second cable section could also be stored outside the shaft 12, for example in an adjacent space.

(12) As is evident in FIG. 2, the releasable clamping device 50 comprises a carriage 58 which is positioned between two second guiding rails 60, 61 and is held on these so as to be displaceable in the vertical direction. For the purpose of improved clarity, a first guiding rail 28 arranged laterally next to the second guiding rails 60, 61 is shown in a dashed line in FIG. 2.

(13) The carriage 58 has a retaining section 62 which is oriented away from the shaft floor 54 and a recess section 64 which is oriented toward the shaft floor 54. Multiple weight elements 66 are held in the recess section 64 and can be inserted into the recess section 64 without the use of tools. A cable clamp 68, which is rigidly connected to the carriage 58, is held on the retaining section 62. The cable clamp 68 has two clamping jaws (not shown in the drawing) which can be moved back and forth between a clamping position and a release position. In the clamping position, they clamp the speed limiter cable 34 between them and in their release position they release the speed limiter cable 34.

(14) When the elevator system 10 is in operation, the speed limiter cable 34 is clamped between the clamping jaws of the cable clamp 68 and the weight elements 66 apply a vertically downward-oriented clamping force on the first cable section 32. No clamping force acts on the second cable section 52, which adjoins the first cable section 32 in the lower shaft region 48, in contrast to the first cable section 32. The second cable section extends loosely from the cable clamp 68, via a deflection pulley 70 arranged at the lower end of the carriage 58, to the cable drum 56 arranged on the shaft floor 54, onto which drum the end portion of the second cable section 52 is wound. This end portion forms a cable store for the speed limiter cable 34.

(15) As already mentioned, the elevator system 10 can be installed in the shaft of a building under construction. As construction progresses, the elevator system 10 can be moved stepwise vertically upward in the shaft 12. To that end, the machine compartment 14 can be raised once the attachment members 15, 16 have been moved from their retaining position (shown in FIG. 1) into a release position (not shown in the drawing). Once the machine compartment 14 has been raised, it can again be temporarily secured in the shaft 12 by means of the attachment members 15, 16. When moving the machine compartment 14, the cable clamp 68 is released such that a lengthening section of the speed limiter cable 34 can be unwound from the cable drum 56. Once the desired height for the machine compartment 14 has been reached, the speed limiter cable 34 can again be securely clamped by means of the cable clamp 68. Normal operation of the elevator system 10 can then resume.

(16) Lengthening the speed limiter cable 34 when moving the temporary machine compartment 12 thus proves very simple. A cable store of the speed limiter cable 14 is kept ready in a storage region by means of the cable drum 56 and a desired lengthening section can be supplied simply to the effective length of the speed limiter cable 34, i.e. to the first cable section 32 extending between the cable retainer 56 and the cable clamp 68.