Carriage of a car frame for guiding the car frame on at least one guide rail of a lift system

Abstract

The present invention relates to a carriage (6.1) of a car frame (6), comprising: a supporting structure (26), at least a secondary part (25.2) of a linear drive (25) for interacting with a primary part (25.1) of the linear drive (25), and at least a first roller holder (7, 7.1) which is arranged on the supporting structure (26) and has at least one roller (11.1, 11.2, 11.3, 11.4) arranged thereon for guiding the car frame (6) on a first guide surface (3.1) of a guide rail (3) along a direction of travel (F) of the carriage (6.1), wherein the first roller holder (7, 7.1) has a first oblique surface (15.1) oriented in the direction of travel (F), wherein the supporting structure (26) has a second oblique surface (15.2) corresponding to the first oblique surface (15.1) and oriented in the direction of travel (F), and wherein the first oblique surface (15.1) and the second oblique surface (15.2) can be displaced relative to one another and fixed in relation to one another in the direction of travel (F) in order to set a distance between the secondary part (25.2) and the primary part (25.1).

Description

[0001] Carriage of a car frame for guiding the car frame on at least one guide rail of an elevator system

[0002] Technical area

[0003] The present invention relates to a carriage of a car frame for guiding the car frame on at least one guide rail of an elevator system, the carriage comprising: a support structure, at least one secondary part of a linear drive for interacting with a primary part of the linear drive arranged in an elevator shaft of the elevator system and at least one first roller holder arranged on the support structure with at least one roller arranged thereon for guiding the car frame on a first guide surface of a guide rail of the elevator system along a direction of travel of the carriage.

[0004] Furthermore, the present invention relates to a car frame for receiving a car of an elevator system and for guiding the car on at least a first guide surface of a guide rail of the elevator system with such a carriage.

[0005] Furthermore, the present invention relates to an elevator installation comprising at least one elevator shaft, at least one guide rail extending along the elevator shaft with at least one first guide surface, at least one primary part of a linear drive extending along the elevator shaft and at least one aforementioned elevator car frame.

[0006] Background of the invention

[0007] Elevator systems for transporting people and / or goods are an integral part of modern residential and commercial buildings. A typical elevator system comprises one or more elevator shafts in which one or more elevator cars are moved between landing positions by means of drives such as suspension drives or linear drives.

[0008] Under the name "MULTI®," the applicant manufactures elevator systems with linear drives, in which multiple cars can be moved completely independently of one another in one or more elevator shafts. Such systems allow a single elevator shaft to be utilized more efficiently than a single-car system, thus reducing waiting times. Furthermore, the MULTI® can be used in both vertical and horizontal elevator shafts.

[0009] In the aforementioned linear drive elevator systems, it is known to suspend the elevator car from a backpack frame, wherein the backpack frame comprises a secondary part of the linear drive and is guided in the elevator shaft by means of rollers on at least one guide rail. The elevator car is designed to be rotatable relative to the guide rail, so that the elevator car can be moved along vertical or horizontal guide rails or guide rails while maintaining a constant upright orientation.

[0010] Primary parts of the linear drive can be moved.

[0011] In elevator systems with linear drives, it is essential for smooth and energy-efficient operation that the primary part on the elevator shaft and the secondary part on the car (frame) are precisely aligned at a consistent distance from each other. This distance is typically only a few millimeters and can be disadvantageous due to cumulative component tolerances of the car frame components, resulting in insufficient precision and / or uneven alignment between the guide rail and the linear drive.

[0012] DE 10 2021 126 563 A1 discloses an elevator system with a vertically displaceable elevator car guided on a guide. The elevator car is mounted on the guide in a four-point bearing unit, and at least one of the four bearing points defined by the bearing unit has a mechanical bearing position compensation. DE 10 2017 113 562 A1 discloses a roller guide for a car of an elevator system, in which a force-connected pair of rollers and an individually mounted roller are arranged opposite each other to prevent excessive changes in the gap between the primary part and the secondary part in the event of a guide rail interruption.

[0013] From WO 2016 / 083032 A1, for example, it is known to avoid undesirable, high forces on the roller and rolling surface, particularly when the car is stationary for a longer period, by supporting the car or the holding device on the rolling surface or the guide rail.

[0014] JP 2011 - 111 262 A discloses an elevator with a guide device that supports a car with a magnetic force without contact with guide rails. The guide device comprises a magnet unit, an auxiliary mechanism, a base, and a pedestal.

[0015] From DE 10 2017 219 400 A1, a guide element for guiding an elevator car on a guide rail is also known, comprising a contact surface for contact with the guide rail, wherein the guide element is designed to maintain different distances between the contact surface on the one hand and the elevator car on the other hand.

[0016] Description of the invention

[0017] Based on this situation, it is an object of the present invention to enable the most precise possible distance between the primary part and the secondary part in an elevator system with a linear drive.

[0018] The object of the invention is achieved by the features of the independent main claims. Advantageous embodiments are specified in the subclaims. To the extent technically possible, the teachings of the subclaims can be combined arbitrarily with the teachings of the main and subclaims. In particular, the object is accordingly achieved by a carriage of a car frame for guiding the car frame on at least one guide rail of an elevator system, the carriage comprising: a support structure, at least one secondary part of a linear drive for interacting with a primary part of the linear drive arranged in an elevator shaft of the elevator system, and at least one first roller holder arranged on the support structure with at least one roller arranged thereon for guiding the car frame on a first guide surface of the guide rail along a travel direction of the carriage,wherein the first roller holder has a first inclined surface oriented in the direction of travel, wherein the support structure has a second inclined surface corresponding to the first inclined surface and oriented in the direction of travel, and wherein the first inclined surface on the second inclined surface can be displaced relative to one another in the direction of travel and can be fixed to one another for adjusting a distance of the secondary part from the primary part.

[0019] Advantageous aspects of the claimed invention are explained below, and preferred modified embodiments of the invention are further described below. Explanations, particularly regarding advantages and definitions of features, are essentially descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly stated.

[0020] Where elements are designated by numbering, for example “first element”, “second element” and “third element”, this numbering is intended purely to differentiate the designation and does not represent any dependency of the elements on one another or a mandatory order of the elements. This means in particular that, for example, a device or a method does not have to have a “first element” in order to be able to have a “second element”. The device or method can also have a “first element” and a “third element” without necessarily having a “second element”. Multiple units of an element with a single numbering can also be provided, for example multiple “first elements”.According to the present understanding, an elevator system is designed, for example, with at least one vertical and / or horizontal elevator shaft and at least one car that can be moved in the elevator shaft, but can also have several vertical and / or horizontal elevator shafts, each with at least one car, as well as elevator shafts with several cars that can be moved therein.

[0021] A car is held and driven in particular by means of a linear drive. A linear drive in an elevator system is formed, for example, from a primary part extending along the elevator shaft and a secondary part located on the car, in particular on the car frame, in particular on a carriage of the car frame. The primary part is then formed from coils arranged one behind the other in a line, each of which is assigned a converter. The coil is energized to generate a magnetic field when the car or car carriage is located in the area of ​​the respective coil. The magnetic field is generated in such a way that the car is attracted or repelled by the magnetic field depending on its intended travel path. The secondary part is formed, for example, by a permanent magnet or electromagnet that interacts with the magnetic fields of the coil.

[0022] An elevator shaft is a continuous shaft that extends over multiple floors and / or along multiple areas of a building and has a cross-section designed for the passage of the elevator car. An elevator shaft of the elevator system can extend vertically and / or horizontally. In one embodiment, the elevator system has at least one partial section of the elevator shaft in which the shaft extends vertically and at least one partial section in which the elevator shaft extends horizontally, wherein the elevator car can pass from the vertically extending section to the horizontally extending section, in particular via a turntable arranged at the meeting point of the partial sections, which is also referred to as an exchanger. At least part of the elevator car frame, in particular the carriage, is rotated together with the exchanger, while the elevator car remains in its upright position.This part of the elevator car frame therefore rotates relative to both the elevator shaft and the car. A car frame is particularly designed as a backpack frame, i.e., it extends primarily on one side of the car, particularly the rear side opposite the car door. The backpack frame is then guided on one or more guide rails on the corresponding side of the elevator shaft; in the case of a linear drive, the primary part of the linear drive is preferably also located on this side of the elevator shaft. In particular, the car frame has at least one secondary part of a linear drive and means for ensuring the rotation of the car relative to the guide rail(s). A car frame is alternatively designed as a central frame and / or guided on several guide rails arranged on different walls of the elevator shaft.

[0023] A carriage of a car frame is understood to be the part of the car frame that comprises the rollers and, in particular, the secondary part of the linear drive. In particular, the carriage is designed as a separate component from a support part and, for example, is rotatably connected to the support part. The support part is then designed to accommodate the car and, for this purpose, has, for example, corresponding support and stop surfaces, while the carriage is designed to establish a connection between the support part and the guide rail or the linear drive. Alternatively, the carriage can also be integrated with the rest of the car frame, with the car frame, for example, forming an integrated unit with the functions of a support part and the functions of a carriage.

[0024] A guide rail is designed, for example, as an I-profile, L-profile, or T-profile, with at least one surface of a profile leg being designed as a guide surface on which at least one roller of the carriage rolls. In particular, two opposing surfaces of a profile leg can also be designed as guide surfaces, with the rollers having one or more opposing pairs of rollers corresponding to the first guide surfaces, which roll on the respective guide surfaces. If the carriage has a supporting structure, this includes all parts that contribute to the internal stability of the carriage or, in the case of an integrated carriage, the car frame.If the first roller mount is arranged on the support structure, it is connected directly or indirectly to the support structure in such a way that forces can be transmitted between the guide rail and the support structure via the first roller mount, so that the carriage can be supported on the guide rail via the first roller mount or the roller(s) arranged thereon. In this respect, the second inclined surface formed on the support structure can also be formed directly, i.e., immediately, or indirectly, i.e., indirectly, on the support structure.

[0025] If an inclined surface is oriented in one direction, the angle the incline forms with the orientation direction is smaller than the angle the incline forms with a direction orthogonal to the orientation direction. For example, the inclined surface forms an angle of 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 15°, or 20° with the direction of travel—the direction in which the carriage moves along the guide rail and in which the rollers roll—while it forms an angle of 89°, 88°, 87°, 86°, 85°, 84°, 83°, 82°, 81°, 80°, 75°, or 70° with the contact direction. The contact direction is understood to be the direction that results from a straight line between a contact point of the roller on a guide surface of the guide rail and the rotation axis of the roller.The mounting direction of the rollers of the first roller holder on the first guide surface preferably corresponds to the direction in which the primary part is spaced from the secondary part.

[0026] The solution to the problem with the carriage described above now includes the teaching that the first roller holder enables a very precise adjustment of the distance between the primary part and the secondary part via the first inclined surface, which interacts directly or indirectly with the second inclined surface on the support structure. Since the secondary part is arranged on the carriage and its positioning is therefore directly dependent on the positioning of the rollers on the carriage, the secondary part is moved towards or away from the primary part by adjusting the rollers. Because the inclined surfaces are oriented in the direction of travel, a very fine adjustment is possible in the setting direction, which corresponds to the direction of adjustment of the distance between the primary part and secondary part.Preferably, the carriage is designed such that, with ideal tolerances, a desired distance between the primary part and the secondary part corresponds to a center position of the two inclined surfaces relative to each other, so that the actual tolerances on both sides can be compensated by shifting the inclined surfaces relative to each other. The distance is adjusted via the inclined surfaces, particularly during the initial installation of the elevator system or when installing the car in the elevator shaft. (Re)adjustment can also be performed during maintenance of the elevator system, particularly at regular intervals.

[0027] The inclined surfaces also make it possible to generate a relatively high contact force between the surfaces when securing them together using appropriate fasteners. Since the forces between the carriage and the guide rail act in the direction of the rollers' contact, a relatively large proportion of these forces lie in the normal direction of the inclined surfaces. This high contact force then ensures a particularly secure hold of the first roller support on the supporting structure, while reliably maintaining the selected distance between the primary and secondary sections during elevator operation.

[0028] As an alternative to the features described above, or in a preferred embodiment of the above, it is provided that at least one recess for fastening means for securing the second inclined surface to the first inclined surface, in particular at least one threaded hole for screws, is arranged on the first inclined surface. The recesses in the first inclined surface allow the fastening means to act directly in the normal direction of the inclined surfaces and thus provide particularly high contact forces when securing the inclined surfaces to one another.

[0029] As an alternative to the features described above, or in a preferred embodiment of the above, the second inclined surface is formed on two supporting structure parts spaced apart from one another by a gap, wherein the gap is designed for the passage of fastening means. This makes it easy to guide the fastening means in the normal direction of the inclined surfaces, wherein, in particular, the parts of the second inclined surface formed on the supporting structure parts can together provide a sufficient contact surface to transmit occurring forces without material failure.

[0030] In a preferred embodiment of the immediately above-described embodiment, the carriage has a counter element, wherein the counter element rests on a counter surface of the support structure parts facing away from the second inclined surface, and wherein the support structure parts can be clamped between the first inclined surface and the counter element by means of the fastening means to fix the second inclined surface to the first inclined surface. Particularly preferably, the counter surface is formed parallel to the second inclined surface. The counter element is then formed, for example, as a counter plate, which in particular has recesses corresponding to the recesses in the first inclined surface, so that the recesses are aligned with one another.In particular, the counter element is designed so that fastening elements in the form of screws penetrate the recesses of the counter element with screw shafts, and the screw heads rest on the counter element to be counter-tightened. By screwing the screws into threaded holes formed on the first inclined surface, the counter element is then drawn toward the first inclined surface, thereby clamping the supporting structure components between the first inclined surface and the counter element.

[0031] As an alternative to the features described above, or in a preferred embodiment of the above, the first roller holder comprises at least one roller suspension with two rollers arranged thereon. The roller suspension extends in particular to two opposite sides of the inclined surfaces in the orientation direction of the inclined surfaces, i.e., the direction of travel, and comprises an axle, shaft, or recess for an axle or shaft for a respective roller in front of and behind the inclined surfaces. The first inclined surface is then arranged between the rollers in order to produce a uniform adjustment of the rollers in the mounting direction for adjusting the distance between the secondary part and the primary part.By providing two rollers arranged on the roller suspension, the alignment of the rollers ensures that the primary and secondary sections are aligned flush with each other in the direction of travel. The two support points, formed by the contact points of the respective rollers with the guide rail, provide mechanical stability in this direction. Tilting of the first roller support about an axis parallel to the rotational axes of the rollers is thus prevented.

[0032] In a preferred embodiment of the immediately above-described, it is provided that the two rollers arranged on the roller suspension are

[0033] designed to be pivotable in the setting direction and are connected to one another by means of a spring element in such a way that the spring travel of the spring element can be changed by pivoting the respective rollers. Pivoting in the setting direction is to be understood as pivoting about an axis parallel to the respective axis of rotation of the rollers. In particular, a respective part of the roller suspension on which the respective axis, shaft or recess for an axis or shaft of the roller is formed is pivotally suspended at a connection point relative to the rest of the roller suspension and in this respect forms a cantilever arm. The rollers can then be pressed against the guide rail by the spring element with a contact force, wherein the provision of the spring element between the two pivotable rollers ensures that a contact force is evenly distributed between the rollers for a flat alignment.Furthermore, the spring element acts as a suspension when driving over an unevenness on the guide rail, so that even on such an unevenness the alignment between the primary part and the secondary part is not lost or at least only slightly disturbed.

[0034] A further challenge that arises during operation when aligning the primary section to the secondary section is maintaining a defined distance between the primary section and the secondary section, even when traveling over gaps in the guide rail, i.e., between two consecutive sections of the guide rail with a gap between them, or when traveling over joints between guide rail sections. Gaps occur, for example, in areas between two sections of the elevator shaft or in the area of ​​a parking or maintenance position of a car, where an openable and closable door is provided, for example, as a fire door or to separate the parking position.

[0035] Shocks also occur, for example, on the exchanger in order to enable the rotary movement to run freely. High guide forces can lead to elastic deformations at shocks, which can cause loaded guide surfaces to shift relative to unloaded guide surfaces of two guide rail sections. Such a shift between loaded and unloaded guide surfaces can occur particularly in suspension using a backpack frame, where the car is held by a cantilever arm. This creates a horizontal offset between the point of application of the holding force and the center of gravity of the car, so that a torque acts on the car, the car frame or the carriage. In order to be able to travel over such mutually shifted guide rail sections with the rollers as smoothly as possible, the corners orThe edges of the guide rail sections at the rail joint can be provided with chamfers or radii, for example. This allows the rail joint to be crossed without, or at least without significant, damage to the rollers. However, this creates a depression there into which a roller can sink when crossing.

[0036] In a preferred embodiment of the carriage described immediately above, which addresses the problem described above, it is provided that the roller suspension has a stop for each roller to limit the pivoting angle. This stop surface is designed in particular to limit the pivoting angle away from the guide rail. If a depression now occurs in the guide rail into which a first of the two rollers sinks, the second roller connected to this roller by means of the spring element is pivoted away from the guide surface and strikes the stop. The stop thus limits the sinking of the first guide roller via the spring element or, depending on the geometric conditions on the roller suspension, largely prevents it, while the roller remains freely movable in the direction towards the guide surface.The distance between the primary part and the secondary part is then essentially maintained or at least only slightly disturbed when driving over a gap or a joint.

[0037] Furthermore, in the aforementioned design of the carriage, the stop is particularly simple due to its integral design with the roller suspension, without the need for additional components, such as stop bolts for each roller screwed to the roller suspension.

[0038] Insofar as a respective part of the roller suspension, on which the respective axle or shaft of the roller is formed, is pivotably suspended at a connection point relative to the remaining roller suspension, the stop surface can be formed on the remaining part of the roller suspension and a corresponding surface on the pivotable part of the roller suspension.

[0039] In a preferred embodiment of the immediately above-described embodiment, the roller suspension is at least partially formed as a cast part, and the stops are formed on the cast part by a machining process. The basic geometry of the roller suspension can thus be formed relatively complexly using a casting process, while the stops are formed by the machining process for precise stopping of the rollers at a specific pivot angle. The stop is then formed particularly simply on the roller suspension.

[0040] As an alternative to the features described above, or in a preferred embodiment of the above, at least two rollers are arranged on the first roller holder opposite one another in their mounting direction. Rollers then rest on the guide rail from two sides for particularly secure guidance of the carriage and for particularly precise alignment of the secondary part to the primary part. The opposing rollers prevent each other from lifting off the guide surface, so that the distance between the primary part and the secondary part is reliably maintained during operation of the elevator system. The opposing rollers also stabilize the carriage's travel on the guide rail in the event of unevenness in one of the opposing guide surfaces of the guide rail.By moving the inclined surfaces against each other, the opposing rollers are adjusted equally in height and moved parallel to each other in height.

[0041] As an alternative to features of the above-described or in a preferred embodiment of the above-described, the carriage further comprises at least one second roller holder arranged on the support structure with at least one roller arranged thereon for guiding the car frame on a second guide surface of a guide rail of the elevator system that is oriented orthogonally to the first guide surface, wherein the second roller holder has a third inclined surface oriented in the direction of travel, wherein the support structure has a fourth inclined surface corresponding to the third inclined surface and oriented in the direction of travel, and wherein the third inclined surfaces on the fourth inclined surface are displaceable relative to one another in the direction of travel for adjusting an alignment of the secondary part to the primary part and can be fixed to one another.The carriage is then fixed to the guide rail(s) in both directions transverse to the direction of travel and is freely movable only in the direction of travel. The third and fourth inclined surfaces, which correspond to one another, allow the secondary part to be adjusted relative to the primary part, even transverse to the distance between the primary part and the secondary part. The primary part and the secondary part can then be precisely aligned to one another for particularly efficient and uniform drive. The second roller mount can be designed in accordance with the previously described embodiments and alternatives of the first roller mount. The carriage position is adjusted via the third and fourth inclined surfaces, particularly during the initial installation of the elevator system or when installing the car in the elevator shaft.A (re)adjustment can also be carried out during maintenance of the elevator system, in particular at regular intervals.

[0042] The task is further solved by a car frame for accommodating a

[0043] Car of an elevator system and for guiding the car on at least one first guide surface of a guide rail of the elevator system, comprising at least one previously described carriage. The car frame has the advantages described above with respect to the carriage. In particular, the car frame allows the distance between a secondary part of the linear drive arranged on the car frame and a primary part of the linear drive arranged on the elevator shaft side to be precisely adjusted, and the distance is precisely maintained during operation of the elevator system.

[0044] In a preferred embodiment of the immediately above-described structure, the car frame comprises a support member for receiving the car, wherein the support member is rotatably mounted on the carriage. The car is then advantageously rotatable by means of the carriage relative to vertically and horizontally aligned guide rails, while the car remains upright.

[0045] The object is further achieved by an elevator system comprising at least one elevator shaft, at least one first guide rail extending along the elevator shaft and having at least one first guide surface, at least one primary part of a linear drive extending along the elevator shaft, at least one previously described car frame guided on the first guide surface, and at least one car held on the car frame. The elevator system achieves the advantages described above with respect to the car frame or the carriage in a corresponding manner. In particular, in the elevator system, the distance between a secondary part of the linear drive arranged on the car frame and a primary part of the linear drive arranged on the elevator shaft side is precisely adjustable, and the distance is precisely maintained during operation of the elevator system.

[0046] In a preferred embodiment of what has been described immediately above, the guide rail is designed with at least two opposing guide surfaces. Opposing rollers in the landing direction can then roll on the two guide surfaces in order to securely hold the car frame on the guide rail and, in particular, to prevent the rollers from lifting off in or against their landing direction. As an alternative to features of what has been described immediately above, or in a preferred embodiment of what has been described immediately above, the elevator installation has at least one second guide rail extending along the elevator shaft with at least one second guide surface oriented orthogonally to the first guide surface, the carriage being guided by rollers of a first roller holder on the first guide surface and by rollers of a second roller holder on the second guide surface.The car frame is then held and guided safely and precisely on the guide rails in both transverse directions to the direction of travel.

[0047] Short description of the drawings

[0048] The invention will be explained in more detail below with reference to preferred embodiments and the accompanying drawings. The term "figure" is abbreviated to "Fig."

[0049] The drawings show

[0050] Fig. 1 is a highly schematic view of an elevator installation according to a preferred embodiment;

[0051] Fig. 2a is a plan view of a roller holder according to a preferred embodiment;

[0052] Fig. 2b is a perspective view of the roller holder according to Figure 2a;

[0053] Fig. 3 shows a section of a carriage according to a preferred embodiment in a perspective view;

[0054] Fig. 4 is a highly schematic representation of a roller unit and a linear drive;

[0055] Fig. 5 is a perspective view of a roller suspension according to a preferred embodiment;

[0056] Fig. 6a is a schematic view of a roller holder on a guide surface of a guide rail in a first position; and Fig. 6b is a schematic view of the roller holder on the guide surface of the guide rail according to Figure 5a in a second position.

[0057] Detailed description of the drawings

[0058] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of protection defined by the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a specific claim category can also be used correspondingly in an embodiment of a different claim category.

[0059] Figure 1 shows a highly simplified elevator installation 1 with an elevator shaft 2, wherein the elevator shaft 2 has a plurality of shaft doors 2.1, each assigned, for example, to floors of a building. In the elevator shaft 2, a guide rail 3 with at least one guide surface (not yet shown in detail in Figure 1) is arranged on a wall opposite the shaft doors 2.1, which guide surface is held to the wall by means of a plurality of brackets 4. Two elevator cars 5.1, 5.2 are arranged so as to be movable on the guide rail 3, wherein the elevator cars 5.1, 5.2 are each held on a car frame 6 designed as a backpack frame. The car frame 6 is formed from a carriage 6.1 guided on the guide rail 3 and a support part 6.2 rotatably connected to the carriage 6.1, wherein the carriage 6.1 for guiding on the guide rail 3 in Figure 1, with roller holders, not yet shown, with rollers that roll on the at least one guide surface. The carriage 6.1 further comprises a secondary part of a linear drive, not yet shown in Figure 1, which interacts with primary parts of the linear drive, also not yet shown in Figure 1, in the elevator shaft 2 to drive the car 5. Figures 2a and 2b show an aforementioned roller holder 7, by means of which the carriage 6.1 is guided and held on the guide rail 3. The roller holder 7 has an upper first roller suspension 8 and a lower second roller suspension 9, wherein the roller suspensions 8, 9 each have a middle part 8.1, 9.1 and two outer parts 8.2, 8.3, 9.2, 9.3. The outer parts 8.2, 8.3, 9.2, 9.3 are pivotally mounted relative to the middle parts 8.1, 9.2. The middle parts 8.1, 8.2 are further arranged on a connecting part 10 and firmly connected to this connecting part 10.

[0060] On the outer parts 8.2, 8.3, 9.2, 9.3 there are respectively arranged rollers 11.1, 11.2, 11.3, 11.4 which roll one behind the other on a common guide surface in a direction of travel F for each roller suspension 8, 9 and are located opposite each other with the respective roller 11.1, 11.2, 11.3, 11.4 of the other roller suspension 8, 9 in a contact direction A in order to roll on opposite guide surfaces in the direction of travel F. Each pair of rollers 11.1-11.2, 11.3-11.4 of a roller suspension 8, 9 is movably connected to one another via a spring element 12.1, 12.2. The spring elements 12.1, 12.2 are stretched or compressed when the outer parts 8.2, 8.3, 9.2, 9.3 are pivoted.

[0061] A first inclined surface 15.1 is formed on the connecting part 10 and is designed to interact with a second inclined surface not yet shown in Figures 2a and 2b. The first inclined surface 15.1 is oriented in the direction of travel F, i.e., it forms a smaller angle α with the direction of travel F than with the landing direction A. The first inclined surface 15.1 forms an angle of 90°-α with the landing direction A. Furthermore, the first inclined surface 15.1 has four recesses 16 designed as threaded bores for receiving fastening means 17 designed as screws. The fastening means 17 are further guided by a counter element 18 designed as a counter plate.

[0062] Figure 3 shows in more detail the arrangement of a first roller holder 7.1 and a second roller holder 7.2 on a carriage 6.1, wherein the first roller holder 7.1 largely corresponds to the roller holder 7 shown in Figures 2a, 2b and the second roller holder 7.2 is designed with only a first roller suspension 8 and accordingly with only two rollers 11.1, 11.2. Furthermore, the mounting directions A.1, A.2 of the two roller holders 7.1, 7.2 are perpendicular to one another and each perpendicular to the direction of travel F. The roller holders 7.1, 7.2 are designed here to be guided together on a T-shaped guide rail 3 with three guide surfaces formed thereon. With regard to the second roller holder 7.2, for the sake of clarity, the equivalent of the first inclined surface 15.1 is referred to as the third inclined surface 15.3.

[0063] The first inclined surface 15.1 of the first roller holders 7.1 and the third inclined surface of the second roller holder 7.2 each interact with a second inclined surface 15.2 and a fourth inclined surface 15.4 of a support structure 26 of the carriage 6.1. For this purpose, two support structure parts 20.1, 20.2 and 21.1, 21.2 are formed on the carriage 6.1, which together form the second inclined surfaces 15.2 and fourth inclined surface 15.4, respectively. The two support structure parts 20.1, 20.2 and 21.1, 21.2 further each form a counter surface 23, away from the second inclined surface 15.2 and fourth inclined surface 15.4, against which the counter element 18 rests. A gap 24 is then formed between the two supporting structure parts 20.1, 20.2 and 21.1, 21.2, respectively, for the penetration of the fastening means 17. Without fastening means 17 or with loose fastening means 17, the inclined surfaces 15.1, 15.2 and 15.3, 15.4 can be moved relative to one another in the direction of travel F, whereby the rollers 11.1, 11.2, 11.3, 11.4 are adjusted in the respective mounting direction A1, A.2. When tightening the fastening means 17, the two.

[0064] Supporting structure parts 20.1, 20.2 or 21.1, 21.2 are each clamped between the counter element 23 and the first inclined surface 15.1 or third inclined surface 15.3 in the adjusted position, so that the inclined surfaces 15.1, 15.2 or 15.3, 15.4 are fixed to one another.

[0065] Figure 4 shows the relationship between the adjustment of a roller holder 7 on the carriage 6.1 and the distance between a primary part 25.1 and a secondary part 25.2 of a linear drive 25 in a schematic representation. Both the second inclined surface 15.2 and the secondary part 25.2 of the linear drive 25 are arranged on the support structure 26 of the carriage 6.1, wherein the secondary part 25.2 is spaced from the primary part 25.1 in the mounting direction A. By moving the roller holder 7, whose rollers 11.1, 11.2 roll on the guide surface 3.1 of the guide rail 3, relative to the support structure 26 of the carriage 6.1 in the direction of travel F, the distance between the primary part 25.1 and the secondary part 25.2 in the mounting direction A is adjusted.

[0066] Figure 5 shows a central part 8.1, 9.1 of a roller suspension 8, 9 with recesses 27 for pivotably receiving outer parts 8.2, 8.3, 9.2, 9.3 of the roller suspension 8, 9. Stops 28 are arranged in the area of ​​the recesses 27, which limit the pivot angle of an outer part 8.2, 8.3, 9.2, 9.3 away from the guide surface 3.1 in order to prevent the rollers 11.1, 11.2 from sinking too far into a gap 29 in the guide rail 3. This process is shown in detail in Figures 6a, 6b. In the illustration according to Figure 6a, both rollers 11.1, 11.2 rest on the guide surface 3.1, with the spring element 12.1, for example, relaxed or slightly compressed, in order to ensure uniform contact pressure of the rollers 11.1, 11.2 on the guide surface 3.1. In the illustration according to Figure 6b, the front roller 11.1 has moved into a gap 29 and sinks into it. The spring element 12.1 is then supported by the first roller 11.1 is stretched, exerting a tensile force on the second roller 11.2, so that the outer part 8.3 with the second roller 11.2 is pulled upwards away from the guide surface 3.1. However, the outer part 8.3 is limited in its pivoting path by the stop 28 and strikes the stop 28 in order to, in turn, provide a holding force for the first roller 11.1 via the spring element 12.1. The first roller 11.1 can thus only sink slightly into the gap 29. If the first roller 11.1 then encounters the next section of the guide rail 3 again, it can easily rest again on the guide surface 3.1 there. During the entire passage over or through the gap 29, the distance between the primary part 25.1 and the secondary part 25.2 (not shown in Figures 6a and 6b) remains largely constant or is only influenced to a very limited extent by the holding force of the gap 29. List of reference symbols.

[0067] 1 elevator system

[0068] 2 elevator shaft

[0069] 2.1 Elevator shaft door

[0070] 3 guide rail

[0071] 3.1 Guide surface of the guide rail

[0072] 4 Console

[0073] 5.1 first car

[0074] 5.2 second car

[0075] 6 car frames

[0076] 6.1 Car frame carriage

[0077] 6.2 Supporting part of the car frame

[0078] 7 Roller holder

[0079] 7.1 first roller holder

[0080] 7.2 second roller holder

[0081] 8 first roller suspension

[0082] 8.1 middle part of the first roller suspension

[0083] 8.2 outer part of the first roller suspension

[0084] 8.3 outer part of the first roller suspension

[0085] 9 second roller suspension

[0086] 9.1 middle part of the second roller suspension

[0087] 9.2 outer part of the second roller suspension

[0088] 9.3 outer part of the second roller suspension

[0089] 10 Connecting part of the roller suspensions

[0090] 11.1 first roller

[0091] 11.2 second roller

[0092] 11.3 third roller

[0093] 11.4 fourth roller

[0094] 12.1 Spring element of the first roller suspension

[0095] 12.2 Spring element of the second roller suspension

[0096] 15.1 first inclined surface

[0097] 15.2 second inclined surface 15.3 third inclined surface

[0098] 15.4 fourth inclined surface

[0099] 16 Recess of the first inclined surface

[0100] 17 Fasteners

[0101] 18 Counter element

[0102] 20.1 first supporting structure part (assigned to the first roller support)

[0103] 20.2 second supporting structure part (assigned to the first roller support)

[0104] 21.1 first supporting structure part (assigned to the second roller support)

[0105] 21.2 second supporting structure part (assigned to the second roller support)

[0106] 23 Counter surface

[0107] 24 Gap between the supporting structure parts

[0108] 25 Linear actuator

[0109] 25.1 Primary part of the linear drive

[0110] 25.2 Secondary part of the linear drive

[0111] 26 Supporting structure of the carriage

[0112] 27 Recess of the middle part of the roller suspension

[0113] 28 Stop on the middle part of the roller suspension

[0114] 29 Gap in the guide rail / guide surface a Angle between direction of travel and first inclined surface

[0115] A Setting direction

[0116] A.1 Setting direction of the first roller bracket

[0117] A.2 Mounting direction of the second roller bracket

[0118] F Direction of travel

Claims

Patent claims 1. A carriage (6.1) of a car frame (6) for guiding the car frame (6) on at least one guide rail (3) of an elevator system (1), the carriage (6.1) comprising: a support structure (26); at least one secondary part (25.2) of a linear drive (25) for interacting with a primary part (25.1) of the linear drive (25) arranged in an elevator shaft (2) of the elevator system (1); and at least one first roller holder (7, 7.1) arranged on the support structure (26) with at least one roller (11.1, 11.2, 11.3, 11.4) arranged thereon for guiding the car frame (6) on a first guide surface (3.1) of the guide rail (3) along a travel direction (F) of the carriage (6.1); wherein the first roller holder (7, 7.1) has a first inclined surface (15.1) oriented in the direction of travel (F); wherein the support structure (26) has a second inclined surface (15.1) corresponding to the first inclined surface (15.1) and oriented in the direction of travel (F).2); and wherein the first inclined surface (15.1) on the second inclined surface (15.2) are displaceable relative to one another and can be fixed to one another in the direction of travel (F) for adjusting a distance between the secondary part (25.2) and the primary part (25.1).

2. Carriage (6.1) according to claim 1, wherein at least one recess (16) for fastening means (17) for fixing the second inclined surface (15.2) to the first inclined surface (15.1), in particular at least one threaded bore for screws, is arranged on the first inclined surface (15.1).

3. Carriage (6.1) according to claim 1 or 2, wherein the second inclined surface (15.2) is formed on two supporting structure parts (20.1, 20.2, 21.1, 21.2) spaced from one another by a gap (24), and wherein the gap (24) is designed for the passage of fastening means (17).

4. Carriage (6.1) according to claim 3, comprising a counter element (18), wherein the counter element (18) rests on a counter surface (23) of the support structure parts (20.1, 20.2, 21.1, 21.2) facing away from the second inclined surface (15.2), and wherein the support structure parts (20.1, 20.2, 21.1, 21.2) can be clamped between the first inclined surface (15.1) and the counter element (18) by means of the fastening means (17) in order to fix the second inclined surface (15.2) to the first inclined surface (15.1).

5. Carriage (6.1) according to one of the preceding claims, wherein the first roller holder (7, 7.1) has at least one roller suspension (8, 9) with two rollers (11.1, 11.2, 11.3, 11.4) arranged thereon.

6. Carriage (6.1) according to claim 5, wherein the two rollers (11.1, 11.2, 11.3, 11.4) arranged on the roller suspension (8) are designed to be pivotable in their mounting direction (A) and are connected to one another by means of a spring element (12.1) such that the spring travel of the spring element (12.1) can be changed by pivoting the respective rollers (11.1, 11.2, 11.3, 11.4).

7. Carriage (6.1) according to claim 6, wherein the roller suspension (8) has a stop (28) for each roller (11.1, 11.2, 11.3, 11.4) for limiting the pivoting angle.

8. Carriage (6.1) according to claim 7, wherein the roller suspension (8) is at least partially formed as a cast part and the stops (28) are formed on the cast part by a machining process.

9. Carriage (6.1) according to one of the preceding claims, wherein at least two rollers (11.1, 11.2, 11.3, 11.4) are arranged opposite one another in their mounting direction (A) on the first roller holder (7, 7.1).

10. Carriage (6.1) according to one of the preceding claims, further comprising: at least one second roller holder (7, 7.2) with at least one roller (11.1, 11.2, 11.3, 11.4) arranged thereon for Guiding the car frame (6) on a second guide surface (3.1) of a guide rail (3) of the elevator system (1), said second guide surface (3.1) being oriented orthogonally to the first guide surface (3.1); wherein the second roller holder (7, 7.2) has a third inclined surface (15.3) oriented in the direction of travel (F); wherein the support structure (26) has a fourth inclined surface (15.4) corresponding to the third inclined surface (15.3) and oriented in the direction of travel (F); and wherein the third inclined surfaces (15.3) are displaceable relative to one another and can be secured to one another on the fourth inclined surface (15.4) in the direction of travel (F) for adjusting an alignment of the secondary part (25.2) to the primary part (25.1).

11. Car frame (6) for receiving a car (5.1, 5.2) of a Elevator installation (1) and for guiding the elevator car (5.1, 5.2) on at least one first guide surface (3.1) of a guide rail (3) of the elevator installation (1), comprising at least one carriage (6.1) according to one of the preceding claims.

12. Car frame (6), comprising a support part (6.2) for receiving the car (5.1, 5.2), wherein the support part (6.2) is rotatably held on the carriage (6.1).

13. Elevator installation (1), comprising at least one elevator shaft (2); at least one guide rail (3) extending along the elevator shaft (2) with at least one first guide surface (3.1); at least one primary part (25.1) of a linear drive (25) extending along the elevator shaft (2); at least one car frame (6) guided on the first guide surface (3.1) according to one of claims 11 or 12; and at least one car (5.1, 5.2) held on the car frame (6).

14. Elevator installation (1) according to claim 13, wherein the guide rail (3) is formed with at least two opposing guide surfaces (3.1).

15. Elevator installation (1) according to claim 13 or 14, comprising at least one second guide rail (3) extending along the elevator shaft (2) with at least one second guide surface (3.1) aligned orthogonally to the first guide surface (3.1), wherein the carriage (6.1) is guided by rollers (11.1, 11.2, 11.3, 11.4) of a first roller holder (7, 7.1) on the first guide surface (3.1) and by rollers (11.3, 11.4) of a second roller holder (7, 7.2) on the second guide surface (3.1).

Images