Elevator car suspension system

Abstract

An elevator car suspension system comprises a car suspension, a work platform and a cable winch, the car suspension comprises at least two vertical beam structures and at least two cross beam structures connecting the vertical beam structures, and the work platform can be placed on the elevator car suspension and form a standing area for executing elevator installation work. The invention relates to a cable winch for lifting an elevator car suspension and a work platform, characterized in that at least one topmost cross-beam structure of the elevator car suspension can be mounted between vertical beam structures in order to receive the work platform, in a retracted position significantly lower than its normal position, the normal position is a set position for elevator operation after the elevator is installed, so that the cross beam structures provide support for the work platform, and the vertical beam structures partially form vertical columns which protrude upwards beyond the topmost cross beam structure supporting the work platform, the vertical stand columns provide lateral supporting for handrails of the working platform.

Description

Technical Field

[0001] The present invention relates to an elevator car suspension system as claimed in claim 1. Background Art

[0002] Generally, there are basically two installation methods for elevator installation, including installing guide rails in an elevator hoistway. One of these methods is installation with the aid of a scaffold. In this method, the scaffold is first installed in the elevator hoistway and removed after installation is completed.

[0003] Another method is installation without installing a scaffold in the hoistway. This installation is mainly called scaffold-free installation. In this installation method, a temporary installation platform is usually lifted by a crane and installation is completed above the platform.

[0004] The installation process using the scaffold-free installation method is generally as follows. First, the bottommost guide rail is installed, and then the platform is installed. The platform is then lifted by a crane. The installer performs the installation from this platform without the need for a scaffold. Since it is not necessary to install a scaffold from the bottom to the top of the hoistway, the scaffold-free installation method is more advantageous and time-saving.

[0005] The traditional scaffold-free installation method requires a platform. At the start of installation, the platform is first installed, removed after installation is completed, and then the car suspension is installed. Installing and removing the platform first and then installing the car suspension is disadvantageous in terms of time.

[0006] In addition, standard scaffold-free installation platforms are available on the market, but they are not suitable for all elevator systems. Therefore, it is necessary to produce complete platforms for scaffold-free installation, which increases the number of parts produced specifically for a single installation, thus increasing costs. In addition, additional equipment is required to move the guide rails upward. During the process of lifting the guide rails, the guide rails may shake and hit the hoistway wall or the equipment, or even become wedged between the platform and the hoistway wall, posing a safety risk. Summary of the Invention

[0007] Therefore, the object or task of the present invention is to provide a means by which elevator installation can be carried out in a more efficient manner.

[0008] The above task is solved by an elevator car suspension system having the features of claim 1.

[0009] To this end, according to the present invention, a car suspension system is proposed that includes a car suspension. This car suspension includes at least two vertical beam structures and at least two cross beam structures, wherein the cross beam structures connect the vertical beam structures. The cross beam structures and the vertical beam structures can be composed of a single part, but preferably include multiple parts. The cross beam structures and the vertical beam structures each preferably include at least two profiles. The vertical beam structures include at least two vertical profiles, and the cross beam structures include at least two horizontal profiles.

[0010] The car suspension system of the present invention further includes a working platform, which can be placed on the elevator car suspension and form a standing area, and the elevator installation work can be carried out from the standing area. The car suspension system also includes a cable winch for lifting the elevator car suspension (including the working platform).

[0011] The car suspension system of the present invention is characterized in that at least one topmost crossbeam structure of the elevator car suspension can be installed between the vertical beam structures as expected in a retracted position significantly lower than its normal position. Here, the intended use of the topmost crossbeam structure is to receive the working platform.

[0012] The "normal position" refers to the position for the actual elevator operation after the elevator installation is completed. In the retracted position, the topmost crossbeam structure thus forms a support for the working platform, and the vertical beam structures partially form vertical columns that protrude upward beyond the crossbeam structure supporting the working platform, and the vertical columns provide lateral support for the railing of the working platform.

[0013] Therefore, the same car suspension is not only used for the actual elevator operation of the elevator system after installation, but also serves as the basic structure of a scaffolding-free installation platform by virtue of its modular structure. The topmost crossbeam structure, preferably installed at a position about 0.7 to 1.5 meters lower than the normal working position, serves as the basic support structure of the scaffolding-free working platform. The upper part of the car suspension vertical beam structure forms a structure that can be connected to the preferably horizontal railing profile of the working platform.

[0014] As described above, the working platform is installed on the topmost crossbeam structure of the car suspension. After the installation is completed and all the guide rails are laid, the platform is disassembled, and the topmost crossbeam structure is adjusted to its original position as the normal position.

[0015] An alternative is that the system includes suspension crossbeam structures and / or vertical beam structures with different lengths and / or optional extension pieces to be installed on the suspension crossbeam structures and / or vertical beam structures to increase their lengths. This enables the car suspension to be easily adapted to hoistways with different cross-sections.

[0016] Another independent alternative of the system is that the working platform itself is preferably designed to be horizontally adjustable. For this purpose, the working platform optionally has a base of metal profiles that form the railing and the pedal base, and the lengths of the metal profiles are adjustable.

[0017] With this adjustability, the same platform can be used in, for example, multiple hoistway types with different hoistway diameters.

[0018] In other words, the car suspension is designed modularly, simplifying the installation of the work platform on the car suspension. Due to the modular design of the car suspension, there is no need to manufacture or install special beams for the work platform. With this modular design, the number of parts and complexity are reduced, and the elevator installation can be carried out more efficiently.

[0019] Preferably, the retracted position and the normal position are respectively pre-determined by a number of prefabricated holes in their respective vertical beam structures. The prefabricated holes are preferably prefabricated in the factory. The crossbeam structure can be threadedly connected to the vertical beam structure through these holes, preferably fastened by through-hole bolts and nuts. Therefore, the preset heights of the normal position and the retracted position are determined, eliminating the need for complex on-site measurements or drilling. This further reduces complexity and enables workers to efficiently adjust the topmost crossbeam structure.

[0020] Additionally, preferably, the retracted position is vertically lower than the normal position by more than 20% of the vertical length of the vertical beam structure, preferably more than 25%, and ideally more than 30%. The vertical beam structures preferably have the same length; if different, the shortest crossbeam structure is used as the calculation basis. The reason for the retracted position being much lower than the normal position is that the vertical beam structures protruding upward beyond the crossbeam structure provide lateral support for the work platform, especially the platform railing, or more importantly, for the drive unit transport platform (if any). The heavy drive unit is placed on the drive unit transport platform and sent to its final installation position. Thus, the installation work can be carried out safely.

[0021] Also preferably, at least the topmost crossbeam structure, preferably all crossbeam structures, are composed of at least two lateral profiles that are parallel to each other and extend at intervals, and are connected at the outermost ends by yokes. The yokes have ear plates for mounting on the vertical beam structures of the car suspension; these lateral profiles preferably all have a C-shaped cross-section. This ensures the necessary stability and the support area required for safely accommodating and supporting the work platform.

[0022] It is also preferred that the car suspension system includes a winch fixture, which preferably consists of two plates fixed at intervals from each other. This design further reduces complexity and enhances the cost-effectiveness of constructing the car suspension system.

[0023] It is also preferred that the winch fixture can be installed on the crossbeam structure as expected, such that it protrudes at least partially into the area above the top side between the two parallel and spaced-apart lateral profiles of the topmost crossbeam structure. The winch fixture thus preferably protrudes above the highest point of the topmost crossbeam structure. Therefore, additional parts can be easily installed and accessed above the topmost crossbeam structure and thus on the work platform.

[0024] Preferably, the winch fixture bears the cable winch and preferably a safety brake located above the crossbeam structure in the assembled state, and the safety brake prevents unintended downward movement. These parts further reduce complexity and enhance safety because they are designed to be incorporated into the overall system and do not need to be installed in a temporary manner or at a temporary location. The cable winch and the safety brake are connected to the same part, reducing the number of parts and complexity.

[0025] In addition, preferably, each of the plates forming the winch fixture is folded in an L shape, so that a lateral ear plate is formed on its bottom side, which fits against and is threadedly connected to the bottom surface of the lateral profile. This design enhances the structural strength of the topmost crossbeam structure and reduces system complexity.

[0026] Also preferably, the car suspension system includes a driving device transporting platform, which can be installed on the vertical beam structure of the car suspension through an ear plate and has a preferably horizontal loading area in a predetermined installation state for the elevator driving device to be placed thereon. In elevator installation, it is usually difficult and dangerous to place the heavy driving device near the top of the hoistway. First connecting the driving device to the moving car suspension through the driving device transporting platform and then vertically transporting the driving device with the moving car suspension is a simple and fast method.

[0027] In addition, the driving device transporting platform preferably has two C-shaped legs or L-shaped legs, which engage around the railing of the working platform to be installed on the vertical beam structure of the car suspension through an ear plate below the railing as expected. Therefore, the driving device transporting platform is preferably at least partially the highest point of the car suspension, enabling the driving device together with the driving device transporting platform to rise to a position near the top of the hoistway in a simple and safe manner.

[0028] Preferably, the loading area of the driving device transporting platform is equipped with at least two parallel guide rails for the driving device, preferably having an L-shaped cross-section, and the guide rails can be aligned with the corresponding guide rails on the driving device support bracket, so that the driving device can be pushed from the guide rails of the driving device transporting platform into the corresponding guide rails of the support bracket. The support bracket is preferably located near the top of the hoistway and preferably in the final position during the operation of the driving device. Therefore, the driving device can be transferred from the driving device transporting platform to the final position near the top of the hoistway in a simple and safe manner.

[0029] Also preferably, the car suspension system includes a guide rail carrier that can be fastened to the work platform, enabling the guide rails to be installed in the hoistway to be moved to their installation positions along with the work platform while maintaining a specified vertical position. This ensures that the guide rails maintain the specified vertical position during the upward movement of the car suspension in a safe, simple, and cost-effective manner, without the need for workers to hold them in an indefinite position and orientation in other ways. On the one hand, this facilitates the installation of the guide rails in the correct position in the hoistway; on the other hand, this improves safety because when used as intended, the possibility of the guide rails getting stuck and bending between the work platform and the hoistway wall is eliminated.

[0030] Also preferably, the guide rail carrier is composed of an L-profile, which extends at least along the uppermost one-sixth of the guide rails to be installed and kept vertically aligned by it. Therefore, the guide rails can be reliably held in a sufficiently long area, which reduces the risk of the guide rails rotating in the guide rail carrier. Additionally, this geometry enables the guide rail carrier to provide sufficient structural strength by preferably connecting two horizontal rails to each other, with one horizontal rail preferably directly above the other.

[0031] Also preferably, the guide rail carrier has at least two guide rail positioning plates, which are formed or fixed thereon at intervals from each other and have recesses that generally correspond to the cross-sectional profile of the guide rails. Therefore, the guide rails preferably contact the guide rail positioning plates and can rest against at least a part of the recesses. This enables the guide rails to be supported by at least two points spaced from each other, further reducing the risk of the guide rails rotating in the guide rail carrier. Additionally, the recesses are designed according to the cross-sectional shape of the guide rails, which helps to safely orient the guide rails as specified and reduces the possibility of worker operation errors.

[0032] It is also preferred that at least one guide rail positioning plate has a latch that can be laterally opened preferably towards the open side of the profile (such as an L-profile), enabling the guide rails to be moved to their installation positions to be loaded into the guide rail carrier from the side. The latch thus serves as a simple and cost-effective clip, allowing the guide rails to be safely attached and preventing them from disengaging during transportation.

[0033] Also preferably, the car suspension system includes a guide rail sling, which includes a plurality of component parts, preferably plates, that at least partially surround the guide rails to be installed and prevent the guide rails from moving longitudinally, at least in one longitudinal direction, preferably downward towards the bottom of the hoistway. The component parts surrounding the guide rails preferably include two L-shaped plates, a straight plate connecting the two L-shaped plates, and an eyebolt preferably located between the two L-shaped plates. Therefore, these component parts surrounding the guide rails prevent the guide rails from moving longitudinally or axially either by tightly surrounding the guide rails through friction locking and / or by form-fitting locking, such as by setting additional parts like bolts and nuts against the straight plate to prevent the above-mentioned movement.

[0034] The two L-shaped plates together with a straight plate are used for a preferred T-shaped guide rail situation. Preferably, bolts connected to the end holes of the guide rail prevent the guide rail from slipping off the tool. Further vertical transportation of the guide rail is carried out by placing the guide rail sling in the guide rail transportation seat. When the vertical movement of the work platform ends, the guide rail is preferably further lifted by connecting another crane to the eyebolt of the guide rail sling.

[0035] Thus, "a simple and cost-effective way to prevent the guide rail from vertically falling into the hoistway" can be provided, as well as a simple method to move the guide rail to its designated position.

[0036] Other possible configurations, working modes, and advantages result from the dependent claims and / or the following description of the embodiments and / or reference to the drawings. Description of the Drawings

[0037] Figure 1 The car suspension system is shown in a perspective view, including the topmost beam structure in its normal position.

[0038] Figure 2 The car suspension system is shown in a perspective view, including the topmost beam structure in its retracted position and the winch fixture connected thereto.

[0039] Figure 3 The car suspension system is shown in a perspective view, including the topmost beam structure in its retracted position, the winch fixture connected thereto, and the work platform installed above.

[0040] Figure 4 The topmost beam structure and the winch fixture that is not connected thereto and not loaded are shown in a perspective view.

[0041] Figure 5 The topmost beam structure and the winch fixture that is connected thereto and loaded are shown in a perspective view, but the transverse profile is not shown.

[0042] Figure 6 The drive device transportation platform is shown in a perspective view.

[0043] Figure 7 The guide rail transportation seat is shown in a perspective view.

[0044] Figure 8 The guide rail sling together with the guide rail that it is expected to hold is shown in a perspective view.

[0045] Figure 9 The guide rail sling is shown in an exploded view. Detailed Description of the Invention

[0046] Figure 1Shows the car suspension 1 of an elevator equipped with the car suspension system 0 of the present invention. The car suspension 1 preferably includes two vertical beam structures 2 and two cross-beam structures 3 connecting the vertical beam structures 2. Each vertical beam structure 2 preferably includes two vertical profiles spaced apart from each other. Each cross-beam structure 3 preferably includes two horizontal profiles spaced apart from each other. The topmost cross-beam structure 3 is preferably designed differently from the other cross-beam structures 3 due to its specific use. The horizontal profile 9 of the topmost cross-beam structure 3 will be explained in more detail later. The vertical beam structures 2 are preferably designed to be similar to each other, even identical to each other.

[0047] In Figure 1 , the topmost cross-beam structure 3 is in its normal position 7a. This normal position 7a is the established position for the elevator operation after the elevator installation is completed, and is usually located at the upper end of the vertical beam structure 2. The normal position 7a is preferably marked by prefabricated holes 31a in the vertical beam structure 2 (see Figure 2 ), and the yoke 10 of the topmost cross-beam structure 3 is preferably threadedly connected to these holes 31a, preferably through the corresponding holes in the ear plates 11 of the yoke 10, and is preferably fastened using bolts and nuts.

[0048] Each vertical beam structure 2 preferably includes a plurality of stiffeners 8, which connect the vertical beams of each vertical beam structure 2 and enhance the structural stability. These stiffeners 8 are preferably metal bent plates, preferably in a C shape, and are connected to the vertical beam structure 2 through ear plates. It is generally preferred that the stiffeners 8 include a central cut.

[0049] Figures 1 to 3 To facilitate the clarification of the naming method of the directions and positions adopted in this article (such as terms like "topmost", "up", "down", "below", "above", "lateral" or "vertical", etc.), the car suspension 1 and the car suspension system 0 installed in the hoistway are shown in the figure, and the aforementioned naming method is determined based on this installation direction. For example, Figure 1 the top or upper side is the side of the car suspension 1 close to the hoistway ceiling, and in this case, it is the side where the displaceable topmost cross-beam structure 3 and its yoke 10 are located. This is also as Figures 1 to 3 shown, where the upper end of the car suspension 1 faces the top side of the page, and the lower end of the car suspension 1 faces the bottom side of the page.

[0050] The topmost cross-beam structure 3 and the other cross-beam structures 3 are preferably parallel to the hoistway ceiling, and thus are horizontally arranged. The vertical beam structures 2 are preferably parallel to the hoistway wall along the traveling direction, and thus are perpendicular to the hoistway ceiling, and extend vertically according to the aforementioned naming method.

[0051] In Figure 2 , the topmost cross-beam structure 3 has moved to its retracted position 7b. The retracted position 7b is preferably marked by prefabricated holes 31b in the vertical beam structure 2 (see Figure 1) The yoke 10 of the topmost crossbeam structure 3 is preferably screwed to these holes 31b, preferably through corresponding holes in the ear plates 11 of the yoke 10, preferably using through-hole bolts and nuts. For this purpose, the topmost reinforcement 8 must be removed in this case.

[0052] This retracted position 7b is significantly lower than its normal position 7a. The retracted position 7b is vertically lower than the normal position 7a by more than 20% of the vertical length of the vertical beam structure 2, preferably more than 25%, and ideally more than 30%.

[0053] In Figure 2 the winch fixture 14 is also shown, which is connected to the topmost crossbeam structure 3. The winch fixture 14 preferably consists of two plates 15, 16 fixed at a distance from each other (see Figure 4 and Figure 5 ). The winch fixture 14 can preferably be mounted on the crossbeam structure 3 such that the winch fixture projects above its top side between these two mutually parallel and laterally spaced profiles 9. In the assembled state, the winch fixture 14 preferably carries the cable winch 6 for lifting the elevator car suspension 1 and preferably the safety brake 18 located above the crossbeam structure 3, which prevents accidental downward movement (see Figure 5 ). Preferably, the individual plates 15, 16 forming the winch fixture 14 are L-shaped folded sheet metal parts, so that their bottom sides form lateral ear plates 19, which abut against the bottom surface of the lateral profile 9 and are screwed thereto.

[0054] Figure 3 It shows how the working platform 4 can be placed on the elevator car suspension 1 or on the topmost crossbeam structure 3 in the retracted position 7b, as Figure 2 shown. The working platform 4 forms a standing area 5 from which the elevator installation work can be carried out. The cable winch 6 for lifting the elevator car suspension 1 and the working platform 4 preferably projects through the standing area 5. The topmost crossbeam structure 3 provides support for the working platform 4; more precisely, the vertical beam structure 2 projects partially upwards above the topmost crossbeam structure 3 supporting the working platform 4, forming vertical columns. These vertical columns provide lateral support for the railing 30, which is preferably included in the working platform 4.

[0055] As described above, the working platform 4 is preferably designed to be adjustable in horizontal dimensions, preferably at least in a direction perpendicular to the crossbeam structure 3 of the car suspension 1 and, if necessary, also in a direction parallel thereto. For this purpose, the working platform 4 may optionally be based on metal profiles forming the pedal base, the length of which is adjustable. Ideally, the length of the profiles forming the railing is also adjustable. The base profiles of the working platform 4 are preferably L-profiles with perforations that extend at least through most of their length. These L-profiles are adapted to be pushed into or pulled out of each other (i.e., "telescoped") to different lengths so as to overlap each other. Since the perforations preferably consist of a plurality of round holes and / or oblong holes arranged and positioned in sequence as described above, the profiles can be firmly connected together by screwing at least at most longitudinal positions. Thus, when the L-profiles are nested one inside the other, the holes of the inner and outer L-profiles are completely aligned.

[0056] Particularly advantageously, the base profile of the working platform 4 (intended to be bolted to the car suspension) is a three-part structure at least in the direction perpendicular to the crossbeam structure 3. The larger middle section can be connected to the car suspension 1 at a defined position, and the other two smaller sections forming the base of the working platform 4 can be telescoped from opposite sides of the middle section of the topmost crossbeam structure 3 to set the width of the working platform 4 required at this construction site.

[0057] The floor of the working platform 4 (i.e., the board on which the elevator installers stand when assembling the elevator system) usually consists of a plurality of individual boards that can be placed side by side with each other. This allows the working platform 4 to be assembled to different widths by telescopically extending its metal profiles accordingly and then laying, for example, two, four or six individual boards.

[0058] In some cases, the base profiles for the installation platform can also be rectangular tubes or, less preferably, round tubes (not shown in the figures), usually tubes of different sizes to enable telescoping. The above-mentioned "three-part design" is preferably adopted, i.e., two smaller tubes are telescopically inserted into a larger central tube.

[0059] Thanks to this adjustability, the same platform and its identical components can be used in different types of hoistways, for example those with different hoistway diameters.

[0060] The railing 30 is preferably manufactured from modular profiles, preferably a combination of angled rails and straight rails with perforations or punched holes. Thus, the horizontal dimensions of the working platform 4 can be conveniently adjusted so that the same working platform 4 can be used in different types of hoistways.

[0061] In addition, Figure 4The uppermost crossbeam structure 3 is shown in detail. The uppermost crossbeam structure 3 preferably consists of at least two transverse profiles 9 extending parallel to each other with a spacing A therebetween. Each transverse profile 9 is preferably connected at its outermost ends by a yoke 10 which has lugs 11 for mounting to the vertical beam structure 2 of the car suspension 1. Each transverse profile 9 preferably has a C-shaped cross-section. These C-shaped beams forming the transverse profiles 9 are preferably arranged back-to-back with their central webs 9a and kept at a spacing A such that their side webs 9b (i.e., the beam legs) project in opposite directions.

[0062] Each transverse profile 9 of the uppermost crossbeam structure 3 preferably has at least one, preferably two, laterally displaceable protective space latches 12 which can be inserted through an opening 13 of the yoke 10 into a latch groove on the installed guide rail 17. The latch groove is not shown in all the figures.

[0063] Each of the yokes 10 preferably has a C-shaped cross-section, and the spacing between the two legs protruding from the central web of the yoke 10 is sufficient to accommodate the transverse profile 9, preferably with substantially no clearance. In addition, the ends of the side webs of the yoke 10 protruding from the central web of the yoke 10 are chamfered, preferably at an angle of about 45°.

[0064] Figure 4 Also shown is a preferred embodiment of the support beam 36 for supporting the work platform 4, preferably provided at the base profile of the work platform 4. These support beams are preferably metal profiles, one side of which is connected to the base profile of the work platform 4 and the other side is connected to the support bracket 37. The support bracket 37 is preferably a metal plate that can be mounted to the vertical beam structure 2.

[0065] The car suspension system 0 preferably also includes a drive unit transport platform 20 (see Figure 3 and Figure 6 ), which can be mounted to the vertical beam structure 2 of the car suspension 1 by means of lugs and has a preferably horizontal loading area 21 for placing the elevator drive unit thereon. The drive unit transport platform 20 is preferably a metal bent plate and preferably has two C-shaped legs or L-shaped legs 23 which engage around the railing 30 of the work platform 4 and are connected to the vertical beam structure 2 of the car suspension 1 by means of lugs 24 below the railing 30. Figure 3 The preferred mounting manner of the drive unit transport platform 20 is shown. The legs 23 preferably engage around one of the uppermost railings 30 such that the drive unit transport platform 20 is located at the highest point of the car suspension 1.

[0066] The loading area 21 is preferably equipped with at least two parallel guide rails 22 for the drive device, preferably having an L-shaped cross-section, which can be aligned with the corresponding guide rails installed on the drive device support bracket, so that the drive device can be pushed from the guide rails 22 of the drive device transport platform 20 into the corresponding guide rails of the support bracket, which is the so-called drive device carrier, which is usually supported by the top end of the fully installed guide rails. The support bracket, as part of the final elevator installation, is preferably located near the top of the hoistway and is not shown in all the figures.

[0067] In addition, the car suspension system 0 preferably includes a guide rail transport seat 25 (see Figure 3 and Figure 7 ). These transport seats 25 can be fastened to the working platform 4 for enabling the guide rails 17 to be installed in the hoistway to move to their installation positions while maintaining a specified vertical position. The transport seats thus keep the guide rails 17 in place during the upward movement of the car suspension (as shown in Figure 3 ). The guide rail transport seat 25 is preferably composed of an L-shaped profile 26, which, ideally, extends at least along the upper eighth or sixth of the guide rails 17 to be installed and kept vertically aligned by it. The L-shaped profile 26 is preferably a metal bent plate.

[0068] The guide rail transport seat 25 preferably has at least two guide rail positioning plates 27, which are formed or fixed to it at intervals from each other and have recesses 28 with a cross-sectional profile roughly corresponding to that of the guide rails 17. In the shown preferred example, the guide rails 17 are T-shaped profiles. In addition, at least one guide rail positioning plate 27 preferably has a latches 29 that can be opened laterally, so that the guide rails 17 to be moved to their installation positions can be loaded into the guide rail transport seat 25 from the side. The shape of the recesses 28 preferably matches the profile of the guide rails 17, and the recesses 28 are jointly formed by the outer shape of the positioning plates 27 and the inner shape of the latches 29 (see Figure 7 ).

[0069] In addition, the car suspension system 0 preferably includes a guide rail sling 32, whose components at least partially surround the guide rails 17 to be installed and at least partially prevent the guide rails 17 from moving longitudinally along them (see Figure 3 ). These components surrounding the guide rails 17 preferably include two L-shaped plates 34, a straight plate 35 connecting the two L-shaped plates 34, and a eyebolt 33 preferably located between the two L-shaped plates 34 (see Figure 8 and Figure 9 ). All components are preferably connected by bolts and nuts. Figure 8 Shows how the guide rails 17 are held in place by the guide rail sling 32. Here, the guide rails 17 include bolts and nuts fixed thereon, which are located above the straight plate 35 when the guide rails are installed in place. Therefore, the vertical downward movement of the guide rails 17 into the hoistway is blocked. Figure 9It is also shown that there may be a situation where a spacer needs to be provided between the straight plate 35 and the L-shaped plate 34, depending on the design of the T-profile and the degree to which it should be clamped in the guide sling 32.

[0070] List of Reference Numerals

[0071] 0 Carriage Suspension System

[0072] 1 Carriage Suspension

[0073] 2 Vertical Beam Structure

[0074] 3 Cross Beam Structure

[0075] 4 Working Platform

[0076] 5 Standing Area

[0077] 6 Cable Winch

[0078] 7a Normal Position

[0079] 7b Retracted Position

[0080] 8 Reinforcement

[0081] 9 Lateral Profile

[0082] 9a Central Web

[0083] 9b Side Web

[0084] 10 Yoke

[0085] 11 Ear Plate

[0086] 12 Protection Space Latch

[0087] 13 Opening

[0088] 14 Winch Fixing

[0089] 15 Plate

[0090] 16 Plate

[0091] 17 Guide Rail

[0092] 18 Safety Brake

[0093] 19 Lateral Ear Plate

[0094] 20 Driving Device Transport Platform

[0095] 21 Horizontal Loading Area

[0096] 22 Guide Rail of Loading Area

[0097] 23 Leg of Driving Device Transport Platform

[0098] 24 Ear plate of the leg of the driving device transporting platform

[0099] 25 Guide rail transporting seat

[0100] 26 L-shaped profile

[0101] 27 Guide rail positioning plate

[0102] 28 Recess

[0103] 29 Bolt

[0104] 30 Railings of the working platform

[0105] 31a Hole indicating the normal position within the vertical beam structure

[0106] 31b Hole indicating the retracted position within the vertical beam structure

[0107] 32 Guide rail sling

[0108] 33 Eyebolt

[0109] 34 L-shaped plate

[0110] 35 Straight plate

[0111] 36 Support beam

[0112] 37 Support bracket

[0113] A Spacing between the transverse profiles

Claims

1. An elevator car suspension system (0), which includes a car suspension (1), a working platform (4) and a cable winch (6). The car suspension includes at least two vertical beam structures (2) and at least two cross beam structures (3) connecting these vertical beam structures. The working platform can be placed on the elevator car suspension (1) and form a standing area (5) for performing elevator installation work. The cable winch is used to lift and lower the elevator car suspension (1) and the working platform (4). It is characterized in that, At least one topmost cross beam structure (3) of the elevator car suspension (1) can be installed between the vertical beam structures (2) in a retracted position (7b) significantly lower than its normal position (7a) for receiving the working platform (4). The normal position is the established position for elevator operation after elevator installation. The cross beam structure (3) provides support for the working platform (4), and the vertical beam structures (2) partially form vertical columns that protrude upward beyond the topmost cross beam structure (3) supporting the working platform (4). The vertical columns provide lateral support for the railing (30) of the working platform (4).

2. The car suspension system (0) according to claim 1, characterized in that, The retracted position (7b) and the normal position (7a) are respectively predetermined by a number of prefabricated holes (31a, 31b) in their respective vertical beam structures (2). Through these prefabricated holes, the cross beam structure (3) can be threadedly fastened to the vertical beam structure (2), preferably using through-hole bolts and nuts for fastening.

3. The car suspension system (0) according to claim 1 or 2, characterized in that, The retracted position (7b) is lower than the normal position (7a) vertically to such an extent that it exceeds 20% of the vertical length of the vertical beam structure (2), preferably exceeds 25%, and ideally exceeds 30%.

4. The car suspension system (0) according to one of the foregoing claims, characterized in that, At least the topmost cross beam structure (3) consists of at least two transverse profiles (9) that are parallel to each other and extend at a distance (A) from each other. These transverse profiles are respectively connected at their outermost ends by a yoke (10). The yoke has ear plates (11) for mounting on the vertical beam structure (2) of the car suspension (1). The transverse profiles (9) preferably all have a C-shaped cross-section.

5. The car suspension system (0) according to one of the preceding claims, characterized in that, The car suspension system (0) includes a winch fixing member (14), which preferably consists of two plates (15, 16) fixed at intervals from each other.

6. The car suspension system (0) according to one of the preceding claims, characterized in that, The winch fixing member (14) can be installed on the cross beam structure (3) in such a way that the winch fixing member protrudes into the area above its top side between the two transverse profiles (9) that are parallel to each other and extend at intervals from each other.

7. The car suspension system (0) according to one of the preceding claims, characterized in that, In the assembled state, the winch fixing member (14) is loaded with a cable winch (6) and preferably loaded with a safety brake (18) that prevents accidental downward movement above the cross beam structure (3).

8. The car suspension system (0) according to one of the preceding claims, characterized in that, Each of the plates (15, 16) forming the winch fixing member (14) is folded in an L shape, so a transverse ear plate (19) is formed on its bottom side. The transverse ear plate abuts against the bottom surface of the transverse profile (9) and is threadedly connected to it.

9. The car suspension system (0) according to one of the preceding claims, characterized in that, The car suspension system (0) includes a drive unit transport platform (20) which can be mounted on the vertical beam structure (2) of the car suspension (1) by means of lugs and has a preferably horizontal loading area (21) for placing the elevator drive unit thereon.

10. The car suspension system (0) according to the previous claim, characterized in that, The loading area (21) is equipped with at least two parallel guide rails (22) for the drive unit, preferably having an L-shaped cross-section, and the guide rails can be aligned with the corresponding guide rails on the drive unit support bracket so that the drive unit can be pushed from the guide rails (22) of the drive unit transport platform (20) into the corresponding guide rails of the support bracket.

11. The car suspension system (0) according to one of the preceding claims, characterized in that, The car suspension system (0) includes a guide rail transport seat (25) which can be fastened to the work platform (4), and by means of these guide rail transport seats, the guide rails (17) to be installed in the hoistway can be moved to their installation positions while maintaining a specified vertical position.

12. The car suspension system (0) according to the previous claim, characterized in that, The guide rail transport seat (25) is composed of an L-shaped profile (26) which extends at least along the top sixth of the guide rail (17) to be installed and which it holds in vertical alignment.

13. The car suspension system (0) according to claim 11 or 12, characterized in that, The guide rail transport seat (25) has at least two guide rail positioning plates (27) which are formed or fixed to it at intervals from each other and which have recesses (28) roughly corresponding to the cross-sectional profile of the guide rail (17).

14. The car suspension system (0) according to one of claims 11 to 13, characterized in that, At least one guide rail positioning plate (27) has a latch (29) which can be opened laterally so that the guide rail (17) to be moved to its installation position can be loaded into the guide rail transport seat (25) from the side.

15. The car suspension system (0) according to one of the preceding claims, characterized in that, The car suspension system (0) includes a guide rail sling (32) which includes a plurality of components, preferably plates (34, 35), which at least partially surround the guide rail (17) to be installed and prevent the guide rail (17) from moving longitudinally, and these components surrounding the guide rail (17) preferably include two L-shaped plates (34), a straight plate (35) connecting the two L-shaped plates (34), and an eyebolt (33) preferably located between the two L-shaped plates (34).

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