EP4653369A1

EP4653369A1 - Elevator car sling system

Info

Publication number: EP4653369A1
Application number: EP24177119.5A
Authority: EP
Inventors: Mesut SELEK; Baris ERGEN; Oguzhan Yildiz; Kaan Ozdemir
Original assignee: Wittur Holding GmbH
Current assignee: Wittur Holding GmbH
Priority date: 2024-05-21
Filing date: 2024-05-21
Publication date: 2025-11-26
Also published as: CN120308791A

Abstract

A car sling system (0) for an elevator with a car sling (1) consisting of at least two vertical beam structures (2) and at least two horizontal beam structures (3) connecting them and a working platform (4) which can be placed on the elevator car sling (1) and forms a standing area (5) from which elevator installation work can be carried out, and a cable winch (6) for raising and lowering the elevator car sling including the working platform, characterized in that at least one uppermost horizontal beam structure (3) of the elevator car sling - for the purpose of receiving the working platform - can be mounted between the vertical beam structures (2) in a retracted position (7b) more than only insignificantly below its regular position (7a), wherein said regular position is the position intended for elevator operation after completion of the elevator installation, so that this horizontal beam structure (3) forms a support for the working platform (4) and so that the vertical beam structures (2) partly form vertical posts projecting upwards beyond the horizontal beam structure (3) supporting the working platform (4), wherein said vertical posts provide lateral support for the balustrades (30) of the working platform (4).

Description

The invention relates to an elevator car sling system according to the generic term of claim 1.

TECHNICAL BACKGROUND

Overall, there are basically two installation methods in elevator installation, which comprises the installation of the guide rails in the elevator shaft. One of these methods is installation with a scaffold. In this method, the scaffold is first installed in the elevator shaft and disassembled and removed after the installation is completed.
The other method is the installation without having to install a scaffold in the shaft. This installation is mainly called scaffold-less installation. In this installation method, usually a temporary installation platform is lifted upwards with a crane and the installation is made over the platform.
The course of the installation with the scaffold-less installation method usually is as it is described in the following. First, the lowest rails are installed and afterwards the platform is installed. This platform is then lifted upwards by a crane. The installer performs the installation from this platform without the need for a scaffold. Because no scaffold has to be installed from the bottom to the top of the shaft, the scaffold-less installation method is more advantageous and saves time.
The traditional scaffold-less installation method requires a platform. When starting the installation, this platform is installed, and after the installation is completed, it is disassembled, and the car sling is installed. Installing and disassembling the platform first and then installing the car sling is disadvantageous in terms of time.
Furthermore, standard scaffold-less installation platforms are sold in the market, but they are not suitable for every elevator system. Having to produce a complete platform for scaffold-less installation increases the number of parts produced specifically for a single installation, thus increasing the cost. Additionally, extra equipment is needed to move the rails up. While carrying the rails up, the rails may shake and hit the shaft walls or equipment or even get wedged between the platform and the shaft walls, creating a safety risk.

THE OBJECT OF THE INVENTION

In the light of this, it is the object or "task" of the invention to provide a means by which the installation of an elevator can be performed in a more efficient way.

THE SOLUTION ACCORDING TO THE INVENTION

This task is solved by an elevator car sling system with the features of claim 1.
For this purpose, according to the invention, a car sling system for an elevator with a car sling is proposed. This car sling consists of at least two vertical beam structures and at least two horizontal beam structures, wherein the horizontal beam structures are connecting the vertical beam structures. The horizontal beam structures as well as the vertical beam structures can comprise a single part, but preferably comprise various parts. Preferably, the horizontal beam structure as well as the vertical beam structure each comprise at least two profiles; in the case of the vertical beam structure at least two vertical profiles and in the case of the horizontal beam structure at least two horizontal profiles.
Said car sling system according to the invention furthermore comprises a working platform which can be placed on the elevator car sling and forms a standing area from which elevator installation work can be carried out. The car sling system also comprises a cable winch for raising and lowering the elevator car sling - including the working platform.
The car sling system according to the invention is characterized in that at least one uppermost horizontal beam structure of the elevator car sling can be mounted as intended between the vertical beam structures in a retracted position more than only insignificantly below its regular position. Herein, the uppermost horizontal beam structure is intended for the purpose of receiving the working platform.
Said "regular position" is the position intended for the actual elevator operation after the elevator installation is completed. In the retracted position, the uppermost horizontal beam structure therefore forms a support for the working platform and the vertical beam structures partly form vertical posts projecting upwards beyond the horizontal beam structure supporting the working platform, wherein said vertical posts provide lateral support for balustrades of the working platform.
The same car sling, which will be installed for the elevator system for the actual elevator operation, is therefore also used as the base structure of the scaffold-less installation platform with the aid of its modular structure. The uppermost horizontal beam structure works as the ground support structure of the scaffold-less working platform by being installed preferably approximately 0.7 until 1.5 m below the normal operating position. The upper part of the car sling's vertical beam structures becomes the structure to which preferably horizontal balustrade profiles of the working platform can be connected.
As mentioned, the working platform is installed on the uppermost horizontal beam structure of the car sling. After the installation is finished and all the guide rails are laid, the platform is disassembled, and the uppermost horizontal beam structure is placed according to its original location, which is the regular position.
It is an option that the system comprises horizontal and/or vertical beam structures for the sling with different length and/or optional extension parts to be mounted to the said horizontal and/or vertical beam structures of the sling for awarding them a greater length. That way the car sling can easily be fitted to shafts with different cross sections.
It is another independent option for the system that the working platform itself is preferably designed in such a way that it can be adjusted in its horizontal dimension. For that purpose, the working platform is optionally based on metal profiles forming the base for food-boards and the balustrades whose length can be adjusted.
Thanks to the adjustability, the same platform can be used in different shaft types differing, for example, in regard to their shaft diameters.
In other words: The car sling is designed modularly for easy installation of the working platform on the car sling. Since the car sling is modular, there is no need for the manufacturing or installation of specific beams for the working platform. Thanks to this modular design, the number of parts and complexity are reduced and the installation of the elevator can be performed in a more efficient way.

PREFERRED DESIGN OPTIONS

Preferably, the retracted position and the regular position are each predetermined by a number of prefabricated holes - preferably already prefabricated in the factory - in the respective vertical beam structure, via which the horizontal beam structure can be screwed to the vertical beam structure, preferably by means of through-bolts and nuts closing them. Therefore, a pre-set height for the regular position as well as the retracted position is defined and there is no need for an elaborate measuring or drilling on site. This again leads to a reduction in complexity and enables the workers to perform the displacement of the uppermost horizontal beam structure in an efficient way.
Furthermore, it is preferred that the retracted position in the vertical direction is below the regular position by an amount which is more than 20%, preferably more than 25% and ideally more than 30% of the vertical length of a vertical beam structure. The vertical beam structures are preferably all of the same length and if not, in this case the shortest horizontal beam structure is taken as the basis of this calculation. The fact that the retracted position is laying this far below the regular position is that the vertical beam structures projecting upwards beyond the horizontal beam structure provide lateral support to the working platform and especially the balustrades of the platform or, more important, to the drive transport platform, if any, on which the heavy drive rests when being brought to its final mounting position. Therefore, the installation work can be performed safely.
Furthermore, it is preferred that at least the uppermost - and preferably all - horizontal beam structure(s) consists of at least two horizontal profiles which run parallel to one another at a distance from one another and are each connected at their outermost ends by a yoke which has flanges for mounting on a vertical beam structure of the car sling; the horizontal profiles preferably each having a C-shaped cross-section. This ensures the necessary stability and also supporting area that is needed to receive und to support the working platform safely.
Moreover, it is preferred that the car sling system comprises a winch anchoring part, which preferably consists of two plates fixed at a distance from each other. This design furthermore adds to the reduced complexity and cost-effective construction of the car sling system.
It is also preferred that the winch anchoring part can be mounted on the horizontal beam structure as intended in such a way that it - at least partly - protrudes between the two horizontal profiles of the uppermost horizontal beam structure, which run parallel and at a distance from each other, into the area above their upper side. The winch anchoring part therefore preferably protrudes over the uppermost point of the uppermost horizontal beam structure. In this way, additional parts can easily be mounted and are easily accessible on top of the uppermost horizontal beam structure and therefore on the working platform.
It is preferred that the winch anchoring part in the assembled state carries a cable winch and preferably also a safety brake above the horizontal beam structure, which prevents impermissible downward movement. These parts furthermore add to a reduced complexity and also safety, because those parts are designed within the whole system and do not have to be mounted in a provisional manner or at a provisional location. Connecting the cable winch and safety brake on the same part reduces the number of parts and complexity.
Furthermore, it is preferred that each of the plates forming the winch anchoring part is folded in an L-shape and thus forms a horizontal flange on its bottom side, which rests against the underside of the horizontal profiles and is screwed against them. This design contributes to the structural strength of the uppermost horizontal beam structure as well as to the reduced complexity of the system.
It is also preferred that the car sling system comprises a drive transport platform which can be flange-mounted on a vertical beam structure of the car sling and - in the intended mounted state - has a preferably horizontal loading area for placing an elevator drive thereon. In elevator installation, it is often difficult and dangerous to place the heavy drive in its position near the shaft ceiling. It is an easy and fast method to first connect the drive to the moving car sling via the drive transport platform and then transport the motor vertically with the moving car sling.
Furthermore, the drive transport platform preferably has two C-shaped or L-shaped legs which engage around a balustrade of the working platform in order to be flanged - as intended - below said balustrade to the vertical beam structure of the car sling. Therefore, the drive transport platform preferably is - at least partly - the highest point of the car sling which makes the lifting of the drive with the drive transport platform to a position near the shaft ceiling possible in an easy and safe manner.
It is preferred that the loading area of the drive transport platform is equipped with at least two parallel guide rails, preferably with an L-shaped cross-section, for the drive, which can be brought into alignment with corresponding guide rails on a support bracket for the drive in such a way that the drive can be pushed out of the guide rails of the drive transport platform into the corresponding guide rails of the support bracket. Said support bracket is preferably located close to the shaft ceiling and preferably in the final location for the drive during operation. In this way, the drive can be transferred from the drive transport platform to the final location near the shaft ceiling in an easy and safe manner.
Furthermore, it is preferred that the car sling system comprises rail transport holders that can be fastened to the working platform, with which rails to be mounted in the shaft can be moved to their installation location while being held in a defined vertical position. This ensures in a safe, simple and cost-effective manner that the guide rails have a defined vertical position during the upwards movement of the car sling and do not have to be held by the workers or in any other way being held in a not defined place and orientation. On the one hand this facilitates the installation of the guide rails in the right position of the shaft wall and on the other hand this improves the safety, as the possibility of buckling off a guide rail that is trapped between the working platform and the shaft wall is eliminated - when used as intended.
Moreover, it is preferred that the rail transport holder consists of an L-profile which extends at least along the uppermost sixth of the guide rail to be mounted held vertically aligned by it. Therefore, the guide rail can be held safely in a sufficiently long area which reduces the risk of the guide rail swiveling in the rail transport holder. Additionally, this geometry of the rail transport holder allows it to provide sufficient structural strength by preferably also connecting two horizontal balustrades with each other, wherein preferably one horizontal balustrade is located right above the other horizontal balustrade.
It is furthermore preferred that the rail transport holder has at least two rail retaining plates which are formed on it or fixed to it at a distance from one another and which have a recess corresponding approximately to the cross-section profile of the guide rail. Therefore, the guide rail is preferably in contact with the rail retaining plates and the rail can rest at least against a part of the recess. In this way, the guide rail is supported by at least two points that are at a distance from each other which again reduces the risk of the guide rail swiveling in the rail transport holder. Furthermore, a design of the recess that follows the cross-section shape of the guide rails contributes to the safe and defined orientation of the guide rail and reduces the possibility of workers making mistakes.
It is also preferred that at least one rail retaining plate has a latch which can be opened laterally - preferably towards the open side of a profile, for example, an L-profile - so that the guide rail to be moved to its installation location can be loaded into the rail transport holder from the side. This latch therefore acts as a simple and cost-effective clamp that allows the rail to be attached safely and prevents it from coming off during transportation.
Furthermore, it is preferred that the car sling system comprises a rail hanging tool which comprises parts, preferably sheets, that at least partly frame the guide rail to be mounted and block the movement of the guide rail in its longitudinal direction - at least in one way of the longitudinal direction, preferably the movement downwards to the shaft bottom. The parts that frame the guide rail preferably are two L-shaped sheets, a straight sheet connecting the two L-shaped sheets and an eyebolt that preferably is located between the two L-shaped sheets. The parts that frame the guide rail therefore block the movement of the guide rail in its longitudinal or axial direction either by framing the guide rail so tightly by frictional locking and/or by providing a form-fit locking by for example additional parts like bolts and nuts that rest against the straight sheet and therefore block said movement.
The two L-shaped sheets together with the one straight sheet are used in the preferred case of a T-shaped guide rail. It is preferred that bolts connected into the holes at the ends of the guide rail prevent the rail from slipping off this tool. The further vertical transportation of the guide rail is carried out by placing the rail hanging tool in the rail transport holder. When the vertical movement of the working platform comes to an end, the guide rail is preferably further lifted higher by connecting another crane to the eyebolt of the rail hanging tool.
Therefore, an easy and cost-effective way of blocking the vertical fall of the guide rail into the shaft can be provided as well as a simple possibility of moving the guide rail to its destined location.
Further possible configurations, modes of operation and advantages result from the dependent claims and/or the subsequent description of the exemplary embodiment and/or with reference to the Figures.

FIGURE LIST

Figure 1 shows the car sling system in three-dimensional view with the uppermost horizontal beam structure in its regular position.
Figure 2 shows the car sling system in three-dimensional view with the uppermost horizontal beam structure in its retracted position and the winch anchoring part connected thereto.
Figure 3 shows the car sling system in three-dimensional view with the uppermost horizontal beam structure in its retracted position, the winch anchoring part connected thereto and the working platform mounted on top.
Figure 4 shows the uppermost horizontal beam structure and the winch anchoring part not being connected to it and being unloaded in three-dimensional view.
Figure 5 shows the uppermost horizontal beam structure and the loaded winch anchoring part connected to it in three-dimensional view, while not showing one horizontal profile.
Figure 6 shows the drive transport platform in three-dimensional view.
Figure 7 shows the rail transport holder in three-dimensional view.
Figure 8 shows the rail hanging tool with a guide rail held by it as intended in three-dimensional view.
Figure 9 shows the rail hanging tool in exploded view.

PREFERRED EMBODIMENT

Fig. 1 shows the car sling 1 of an elevator that is equipped with the car sling system 0 according to the invention. The car sling 1 preferably comprises two vertical beam structures 2 and two horizontal beam structures 3 connecting the vertical beam structures 2. Each vertical beam structure 2 preferably comprises two vertical profiles that are at a distance to each other. Each horizontal beam structure 3 preferably comprises two horizontal profiles that are at a distance to each other. The uppermost horizontal beam structure 3 is preferably designed differently than the other horizontal beam structures 3 because of its specific use. The horizontal profiles 9 of the uppermost horizontal beam structure 3 will be explained in more detail later on. The vertical beam structures 2 are preferably designed similar or even identical to one another.
In Fig. 1 the uppermost horizontal beam structure 3 is in its regular position 7a. This regular position 7a is the position intended for elevator operation after completion of the elevator installation and is usually a position at the upper end of the vertical beam structures 2. The regular position 7a is preferably marked by prefabricated holes 31a (see Fig. 2) in the vertical beam structures 2, and the yokes 10 of the uppermost horizontal beam structure 3 are preferably screwed to those holes 31a, preferably through corresponding holes in the flanges 11 of the yokes 10; preferably by through-bolts and nuts closing them. Each vertical beam structure 2 preferably comprises stiffening elements 8 that connect the vertical beams of each vertical beam structure 2 and give further structural stability. Those stiffening elements 8 are preferably bent sheet metal parts, preferably in C-shape that are flanged to the vertical beam structure 2. It is often preferable that a stiffening element 8 comprises a central cutout.
To summarize the nomenclature for orientation and position that is used in this course like the words 'uppermost', 'upper', 'lower', 'below', 'above', 'horizontal' or 'vertical', the Fig. 1 to Fig. 3 are helpful. They show the car sling 1 with the car sling system 0 in its orientation in the shaft on which this nomenclature is based. In Fig. 1, for example, the top side or upper side is the side of the car sling 1 that is closer to the shaft ceiling and in this case the side where the uppermost, displaceable horizontal beam structure 3 with its yokes 10 is located. That is also shown in the Fig. 1 to Fig. 3, where the upper end of the car sling 1 is shown towards the top of the page and the lower end of the car sling 1 is shown towards the bottom of the page.
The uppermost horizontal beam structure 3 as well as the other horizontal beam structure 3 are preferably parallel to the shaft ceiling and therefore horizontal. The vertical beam structures 2 are preferably parallel to the shaft walls in riding direction and therefore perpendicular to the shaft ceiling and run 'vertical' in this nomenclature.
In Fig. 2 the uppermost horizontal beam structure 3 was moved to its retracted position 7b. The retracted position 7b is preferably marked by prefabricated holes 31b (see Fig. 1) in the vertical beam structures 2, and the yokes 10 of the uppermost horizontal beam structure 3 are preferably screwed to those holes 31b, preferably through corresponding holes in the flanges 11 of the yokes 10; preferably by through-bolts and nuts closing them. In order to do so, in this case, the uppermost stiffening element 8 has to be disassembled.
This retracted position 7b is more than only insignificantly below its regular position 7a. The retracted position 7b in the vertical direction is below the regular position 7a by an amount which is more than 20%, preferably more than 25% and ideally more than 30% of the vertical length of a vertical beam structure 2.
In Fig. 2 also the winch anchoring part 14 is shown that is connected to the uppermost horizontal beam structure 3. This winch anchoring part 14 preferably consists of two plates 15 and 16 that are fixed at a distance from each other (see Fig. 4 and Fig. 5). The winch anchoring part 14 preferably can be mounted on the horizontal beam structure 3 in such a way that it protrudes between the two horizontal profiles 9, which run parallel and at a distance from each other, into the area above their upper side. The winch anchoring part 14 in the assembled state preferably carries a cable winch 6 for raising and lowering the elevator car sling 1 and preferably also a safety brake 18 above the horizontal beam structure 3, which prevents impermissible downward movement (see Fig. 5). Preferably, each of the plates 15 and 16 forming the winch anchoring part 14 is a sheet metal part, folded in an L-shape and thus forms a horizontal flange 19 on its bottom side, which rests against the underside of the horizontal profiles 9 and is screwed against them.
Fig. 3 shows how a working platform 4 can be placed on the elevator car sling 1 or rather the uppermost horizontal beam structure 3 in the retracted position 7b, as it is also shown in Fig. 2. This working platform 4 forms a standing area 5 from which elevator installation work can be carried out. The cable winch 6 for raising and lowering the elevator car sling 1 including the working platform 4 preferably protrudes through the standing area 5. The uppermost horizontal beam structure 3 forms a support for the working platform 4, or, more exact, the vertical beam structures 2 partly form vertical posts projecting upwards beyond the uppermost horizontal beam structure 3 which is supporting the working platform 4. Those vertical posts provide lateral support for balustrades 30 that the working platform 4 preferably comprises.
As already mentioned before, the working platform 4 is preferably designed in such a way that it can be adjusted in its horizontal dimension - preferably at least in the direction perpendicular to the horizontal beam structure 3 of the car sling 1, in other cases parallel thereto, too. For that purpose, the working platform 4 is optionally based on metal profiles forming the base for food-boards whose length can be adjusted. Ideally, the length of the balustrade forming profiles can be adjusted, too. Preferably, the base profiles of the working platform 4 are L-profiles with a perforation extending over at least the majority of their length. These L-Profiles are tuned so that they can be pushed together or pulled out ("telescoped") to different lengths, overlapping each other. Thanks to the perforation, which preferably consists of a number of circular and/or elongated holes arranged one behind the other and positioned that way, the profiles can be firmly screwed together at least in most length positions. Thereby the holes of the inner and the outer L-profile cover each other completely, when the L-profiles are placed inside each other.
It is particularly advantageous if the profiles forming the base of the working platform 4, which is intended to be bolted to the car sling, are in three parts, at least in direction perpendicular to the horizontal beam structure 3. The middle, bigger section can be connected to the car sling 1 in a defined position and the other two smaller sections forming the base of the working platform 4 can be telescoped into or out of the middle section of the uppermost horizontal beam structure 3 from opposite sides in order to set the width of the working platform 4 required for this construction site.
Typically, the base plate of the working platform 4, i.e. the plate on which the elevator installers stand when setting up the elevator system, is made up of several individual plates that can be laid next to each other. This allows the working platform 4 to be set up in different widths by telescoping its metal profiles accordingly and by laying hereinafter e.g. two or four or six single plates.
In some cases, it is also possible to use base profiles for the mounting platform which are rectangular or, not preferred, circular tubes (not shown by the Figures) - in most cases smaller and bigger ones in order to enable a telescoping. The above mentioned "three-part design" with one central bigger tube into which two smaller tubes are "telescoped" is here preferred, too.
Thanks to the adjustability, the same platform with its same components can be used in different shaft types differing, for example, in regard to their shaft diameters.
The balustrades 30 are preferably made up from modular profiles, preferably a mixture of angled and straight rails with perforations or punched holes. This way, the horizontal dimensions of the working platform 4 can be adjusted easily and therefore the same working platform 4 can be used in different shaft types.
Furthermore, Fig. 4 shows the uppermost horizontal beam structure 3 in detail. The uppermost horizontal beam structure 3 preferably consists of at least two horizontal profiles 9 which run parallel to one another at a distance A from one another. The horizontal profiles 9 are each preferably connected at their outermost ends by a yoke 10 which has flanges 11 for mounting on a vertical beam structure 2 of the car sling 1. The horizontal profiles 9 preferably each have a C-shaped cross-section. Those C-shaped beams forming the horizontal profiles 9 preferably lie back-to-back with their central webs 9a while maintaining the distance A, so that their side webs 9b - which are the legs - project in opposite directions. Each horizontal profile 9 of the uppermost horizontal beam structure 3 preferably has at least one, preferably two horizontally displaceable protective space latches 12, which can be inserted through a window 13 of the yoke 10 into a latch receiver on a mounted guide rail 17. This latch receiver is not shown in any figures.
Each of said yokes 10 preferably has a C-shaped cross-section, and the two legs projecting from the central web of the yoke 10 are spaced apart so far that they can receive the horizontal profiles 9 between them, preferably essentially free of play. Furthermore, the side webs of the yoke 10 projecting from the central web of the yoke 10 are each cut obliquely at the ends, preferably at an angle of about 45°.
Fig. 4 also shows the preferred possibility of supporting beams 36 supporting the working platform 4, preferably on the base profiles of the working platform 4. Those supporting beams are preferably metal profiles that are connected to the base profiles of the working platform 4 on the one side and to a supporting bracket 37 on the other side. This supporting bracket 37 preferably is a metal sheet part that can be mounted to the vertical beam structures 2.
The car sling system 0 preferably also comprises a drive transport platform 20 (see Fig. 3 and Fig. 6) which can be flange-mounted on a vertical beam structure 2 of the car sling 1 and has a preferably horizontal loading area 21 for placing an elevator drive thereon. The drive transport platform 20 is preferably a bent sheet metal and preferably has two C-shaped or L-shaped legs 23 which engage around a balustrade 30 of the working platform 4 in order to be flanged below said balustrade 30 to the vertical beam structure 2 of the car sling 1 with the help of flanges 24. Fig. 3 shows how the drive transport platform 20 is preferably mounted. The legs 23 preferably engage around one of the uppermost balustrades 30, so that the drive transport platform 20 is the highest point of the car sling 1.
The loading area 21 is preferably equipped with at least two parallel guide rails 22, preferably with an L-shaped cross-section, for the drive, which can be brought into alignment with corresponding mounted rails on a support bracket for the drive in such a way that the drive can be pushed out of the guide rails 22 of the drive transport platform 20 into the corresponding rails of the support bracket, also called drive carrier which is in most cases supported by the uppermost end of the guide rails as soon as they are completely mounted. This support bracket, being a part of the final elevator installation, is preferably located near the shaft ceiling and is not shown in any figures.
Furthermore, the car sling system 0 preferably comprises rail transport holders 25 (see Fig. 3 and Fig. 7). Those transport holders 25 can be fastened to the working platform 4, and with them, guide rails 17 to be mounted in the shaft can be moved to their installation location while being held in a defined vertical position. The transport holders therefore hold the guide rails 17 in place during the lifting motion of the car sling as it can be seen in Fig. 3. A rail transport holder 25 preferably consists of an L-profile 26 which ideally extends at least along the uppermost eighth or sixth of the guide rail 17 to be mounted held vertically aligned by it. This L-profile 26 preferably is a bent sheet metal part.
The rail transport holder 25 preferably has at least two rail retaining plates 27 which are formed on it or fixed to it at a distance from one another and which have a recess 28 corresponding approximately to the cross-section profile of the guide rail 17. In the shown preferred example, the guide rails 17 are T-profiles. Furthermore, at least one rail retaining plate 27 preferably has a latch 29 which can be opened laterally, so that the guide rail 17 to be moved to its installation location can be loaded into the rail transport holder 25 from the side. It is preferred that the recess 28 is in the same shape as the profile of the guide rail 17 and this recess 28 is formed by the outside shape of the retaining plate 27 and the inside shape of the latch 29 (see Fig. 7).
Furthermore, the car sling system 0 preferably comprises a rail hanging tool 32 which comprises parts that at least partly frame the guide rail 17 to be mounted and at least partly block the movement of the guide rail 17 in its longitudinal direction (see Fig. 3). Those parts that frame the guide rail 17 preferably are two L-shaped sheets 34, a straight sheet 35 - connecting the two L-shaped sheets 34 - and an eyebolt 33 that preferably is located between the two L-shaped sheets 34 (see Fig. 8 and Fig. 9). The parts are all preferably connected by bolts and nuts. Fig. 8 shows how a guide rail 17 is held in place by the rail hanging tool 32. Here, the guide rail 17 comprises bolts and nuts that are fixed to them which are laying on top of the straight sheet 35 in its mounted position. So, the vertical movement of the guide rail 17 is blocked into the direction downwards into the shaft. Fig. 9 also shows that it can be necessary to use spacers in between the straight sheet 35 and the L-shaped sheets 34, depending on how the T-profile is designed and how tight it should be clamped in the rail hanging tool 32.

REFERENCE LIST

0: Car sling system
1: Car sling
2: Vertical beam structure
3: Horizontal beam structure
4: Working platform
5: Standing area
6: Cable winch
7a: Regular position
7b: Retracted position
8: Stiffening element
9: Horizontal profile
9a: Central web
9b: Side web
10: Yoke
11: Flange
12: Protective space latch
13: Window
14: Winch anchoring part
15: Plate
16: Plate
17: Guide rail
18: Safety break
19: Horizontal flange
20: Drive transport platform
21: Horizontal loading area
22: Guide rail of the loading area
23: Leg of the drive transport platform
24: Flange of the leg of the drive transport platform
25: Rail transport holders
26: L-profile
27: Rail retaining plate
28: Recess
29: Latch
30: Balustrade of the working platform
31a: Holes in vertical beam structure for regular position
31b: Holes in vertical beam structure for retracted position
32: Rail hanging tool
33: Eyebolt
34: L-shaped sheet
35: Straight sheet
36: Supporting beam
37: Supporting bracket

A: Distance between horizontal profiles

Claims

A car sling system (0) for an elevator with a car sling (1) consisting of at least two vertical beam structures (2) and at least two horizontal beam structures (3) connecting them and a working platform (4) which can be placed on the elevator car sling (1) and forms a standing area (5) from which elevator installation work can be carried out, and a cable winch (6) for raising and lowering the elevator car sling (1) including the working platform (4), characterized in that at least one uppermost horizontal beam structure (3) of the elevator car sling (1) - for the purpose of receiving the working platform (4) - can be mounted between the vertical beam structures (2) in a retracted position (7b) more than only insignificantly below its regular position (7a), wherein said regular position is the position intended for elevator operation after completion of the elevator installation, so that this horizontal beam structure (3) forms a support for the working platform (4) and so that the vertical beam structures (2) partly form vertical posts projecting upwards beyond the uppermost horizontal beam structure (3) supporting the working platform (4), wherein said vertical posts provide lateral support for balustrades (30) of the working platform (4).
The car sling system (0) according to claim 1, characterized in that the retracted position (7b) and the regular position (7a) are each predetermined by a number of prefabricated holes (31a, 31b) in the respective vertical beam structure (2), via which the horizontal beam structure (3) can be screwed to the vertical beam structure (2), preferably by means of through-bolts and nuts closing them.
The car sling system (0) according to claim 1 or 2, characterized in that the retracted position (7b) in the vertical direction is below the regular position (7a) by an amount which is more than 20%, preferably more than 25% and ideally more than 30% of the vertical length of a vertical beam structure (2).
The car sling system (0) according to one of the preceding claims, characterized in that at least the uppermost horizontal beam structure (3) consists of at least two horizontal profiles (9) which run parallel to one another at a distance (A) from one another and are each connected at their outermost ends by a yoke (10) which has flanges (11) for mounting on a vertical beam structure (2) of the car sling (1); the horizontal profiles (9) preferably each having a C-shaped cross-section.
The car sling system (0) according to one of the preceding claims, characterized in that the car sling system (0) comprises a winch anchoring part (14), which preferably consists of two plates (15, 16) fixed at a distance from each other.
The car sling system (0) according to one of the preceding claims, characterized in that the winch anchoring part (14) can be mounted on the horizontal beam structure (3) in such a way that it protrudes between the two horizontal profiles (9), which run parallel and at a distance from each other, into the area above their upper side.
The car sling system (0) according to one of the preceding claims, characterized in that the winch anchoring part (14) in the assembled state carries a cable winch (6) and preferably also a safety brake (18) above the horizontal beam structure (3), which prevents impermissible downward movement.
The car sling system (0) according to one of the preceding claims, characterized in that each of the plates (15, 16) forming the winch anchoring part (14) is folded in an L-shape and thus forms a horizontal flange (19) on its bottom side, which rests against the underside of the horizontal profiles (9) and is screwed against them.
The car sling system (0) according to one of the preceding claims, characterized in that the car sling system (0) comprises a drive transport platform (20) which can be flange-mounted on a vertical beam structure (2) of the car sling (1) and has a preferably horizontal loading area (21) for placing an elevator drive thereon.
The car sling system (0) according to the immediately preceding claim, characterized in that the loading area (21) is equipped with at least two parallel guide rails (22), preferably with an L-shaped cross-section, for the drive, which can be brought into alignment with corresponding rails on a support bracket for the drive in such a way that the drive can be pushed out of the guide rails (22) of the drive transport platform (20) into the corresponding rails of the support bracket.
The car sling system (0) according to one of the preceding claims, characterized in that the car sling system (0) comprises rail transport holders (25) that can be fastened to the working platform (4), with which guide rails (17) to be mounted in the shaft can be moved to their installation location while being held in a defined vertical position.
The car sling system (0) according to the immediately preceding claim, characterized in that a rail transport holder (25) consists of an L-profile (26) which extends at least along the uppermost sixth of the guide rail (17) to be mounted held vertically aligned by it.
The car sling system (0) according to one of the two preceding claims, characterized in that the rail transport holder (25) has at least two rail retaining plates (27) which are formed on it or fixed to it at a distance from one another and which have a recess (28) corresponding approximately to the cross-section profile of the guide rail (17).
The car sling system (0) according to one of the three preceding claims, characterized in that at least one rail retaining plate (27) has a latch (29) which can be opened laterally, so that the guide rail (17) to be moved to its installation location can be loaded into the rail transport holder (25) from the side.
The car sling system (0) according to one of the preceding claims, characterized in that the car sling system (0) comprises a rail hanging tool (32) which comprises parts, preferably sheets (34, 35), that at least partly frame the guide rail (17) to be mounted and block the movement of the guide rail (17) in its longitudinal direction, the parts that frame the guide rail (17) preferably being two L-shaped sheets (34), a straight sheet (35) - connecting the two L-shaped sheets (34) - and an eyebolt (33) that preferably is located between the two L-shaped sheets (34).