Leadership profile

Abstract

Guide profile (1) of an elevator or lift with a positively guided drive chain (12), wherein the guide profile (1) has a central guide groove (2) for a guide element (9) of the load carrier (18) of the elevator or lift, characterized in that the guide profile (1) has two outer grooves (3) in which the positively guided drive chain (12) is located and wherein the outer grooves (3) and the central guide groove (2) are each spaced apart from each other and their openings are aligned towards the same side of the guide profile (1) and wherein the guide profile (1) is an aluminum extrusion profile.

Description

[0001] The invention relates to a guide profile of an elevator or lift with a positively guided drive chain.

[0002] The invention relates to a device for transporting persons and loads between one or more floors, which is referred to as a lift, elevator, or hoist. For the sake of simplicity, the term lift will generally be used synonymously for such devices in the following text. However, in some places, "lift" or "elevator" will be used, as these terms are sometimes associated with different meanings. JP 2010-52 873 A shows a guide profile of a lifting device. A guide groove is located on one side of the profile. The drive appears to be provided by cables of a motor-driven cable drum, which are located outside the profile.

[0003] DE 728 007 A shows a guide for a lifting device which includes several U-shaped profiles which are attached to different sides of a traverse.

[0004] The CN 2 02 163 830 U shows a guide rail of a chain conveyor.

[0005] DE 25 01 353 A1 relates to a lifting device with a pressing lifting drive.

[0006] According to the prior art, several methods are known for transmitting the driving force of the motor to a load carrier, which may be designed or designated as an elevator car, elevator basket, or elevator platform. The present invention relates to elevators with chain drives, wherein the chain is positively guided. Positively guided in this context means that the chain is not freely located in space, for example between two sprockets (as on a bicycle), but rather that the chain is positively engaged in an elongated guide rail.

[0007] One advantage of forced chain guidance is that a safety catch on the load carrier is not strictly necessary. With a guided chain, power transmission is guaranteed even in the event of chain breakage. Forced chain guidance thus offers the significant advantage that the chain itself is supported within the profile in case of breakage.

[0008] According to the prior art, a guide profile is known which is welded together from several steel profiles. The guide profile has two lateral recesses in which plastic guide rails are inserted, with the chain being positively guided in the guide rails. In the area between the chains, the guide profile has a central guide for a sliding jaw, which is connected to the load carrier of the elevator. The load carrier is the assembly that moves the load; the load carrier can be the elevator car, elevator basket, or elevator platform. Disadvantages include the manufacturing of the profile from several steel profiles and the risk of corrosion, especially in the exterior areas of buildings. A further disadvantage is that the central guide is separated from the two lateral recesses of the guide rails by only a single layer of sheet metal.The two single layers of sheet metal are each bent towards the central guide so that they overlap the sliding jaw. The two guide rails are not overlapped by the guide profile on their side facing the sliding jaw.

[0009] The object underlying the invention is to provide an improved guide profile for an elevator or lift with a positively guided drive chain.

[0010] To solve the problem, a guide profile according to claim 1 and a drive system according to claim 12 are proposed.

[0011] In one embodiment, a guide profile for an elevator or lift with a positively guided drive chain is proposed, wherein the guide profile has a central guide groove for a guide element of a load carrier, such as in particular the elevator car, the elevator basket or the elevator platform, and wherein the guide profile has two outer grooves in which the positively guided drive chain is located, and wherein the outer grooves and the central guide groove are each spaced apart from each other and their openings are aligned to the same side of the guide profile, wherein the guide profile is an aluminum extrusion profile.

[0012] In one design variant, the outer grooves themselves form a positive guide for the positively guided drive chain.

[0013] In another embodiment, guide rails are accommodated in the two outer grooves, with the guide rails providing positive guidance for the positively guided drive chain.

[0014] The guide rails can be replaced when worn, allowing the guide profile to continue to be used. The guide rails can be made of the same material as the guide profile or of a different material.

[0015] In one embodiment, the guide rails are made of plastic. In another embodiment, the guide rails are made of metal, in particular aluminum. The guide element of the load carrier can include at least one sliding jaw. In another embodiment, the guide element of the load carrier can include at least one roller or a roller assembly.

[0016] It is preferred that a hollow leg of the guide profile is located between one of the outer grooves and the middle guide groove, i.e. a leg which has a hollow chamber closed in the circumferential direction of the profile.

[0017] It is preferred that a T-slot is located between one of the outer slots and the middle guide slot.

[0018] It is preferred that a hollow leg is located on the outside adjacent to each of the outer grooves.

[0019] It is preferred that a T-slot is located adjacent to each of the outermost slots.

[0020] Preferably, the guide profile has a groove for inserting a brush, which is located on one side outside next to one of the outer grooves or, if present, on one side outside next to one of the T-slots.

[0021] It is preferred that the guide profile has several hollow chambers in the area behind the grooves, which are separated from each other by webs.

[0022] It is preferred that the guide profile has a further hollow chamber in the area behind each of the T-slots, which projects further towards the open ends of the T-slots compared to the previously mentioned hollow chambers, wherein the further hollow chambers are separated from the previously mentioned hollow chambers by webs.

[0023] It is preferred that at least two hollow chambers each have a guide or screw channel.

[0024] Preferably, the central guide groove and the two outer grooves are configured such that they have a groove base and a projection on both legs bordering the groove base, which is spaced apart from the groove base and extends in the direction of the groove. The central guide groove and the two outer grooves can therefore be in the form of a T-slot, with the shape of the central guide groove shown in the figures also fulfilling the function of a T-slot.

[0025] In one embodiment, a drive system for an elevator or lift is proposed, comprising at least a guide profile, a drive chain and a guide element for a load carrier of the elevator or lift, wherein the guide profile has a central guide groove in which the guide element is guided, wherein the guide profile has two outer grooves in which the positively guided drive chain is located, and wherein the outer grooves and the central guide groove are each spaced apart from each other and their openings are aligned towards the same side of the guide profile, wherein the guide profile is an aluminum extrusion profile.

[0026] Preferably, the drive system comprises at least two guide rails which are inserted into the outer grooves, wherein the drive chain is positively guided in the guide rails.

[0027] Preferably, the drive system comprises two identical guide profiles, in each of which a guide element of the load carrier is guided.

[0028] The invention is illustrated by drawings: Fig. Figure 1 shows the profile of a preferred guide profile according to the invention. Fig. Figure 2 shows the profile of a preferred guide profile according to the invention with elements of the drive system of an elevator or lift inserted therein. Fig. 3: The Fig. Figures 3a-c illustrate possible design variants of the elevator or lift.

[0029] Fig. 1 and Fig. Figures 2 show the same end face of a guide profile 1. The guide profile 1 is an extruded aluminum profile whose longitudinal direction is perpendicular to the plane of the paper, i.e., to the depicted end face. Due to its production by extrusion, the guide profile 1 has a uniform cross-section along its entire length. This cross-section could subsequently be provided with holes, cutouts, or milled features.

[0030] Fig. Figure 1 shows a guide profile 1 which has a central guide groove 2. The guide profile 1 also has two outer grooves 3, wherein the outer grooves 3 and the central guide groove 2 are spaced apart from each other and their openings face the same side of the guide profile 1. The term "outer" grooves 3 refers to the fact that they are located further out than the central guide groove 2. The guide groove 2 is therefore located between the outer grooves 3, preferably off-center between them.

[0031] The outer grooves 3 are each separated from the guide groove 2 by at least one web of the guide profile 1. Preferably, one of the outer grooves 3 is separated from the guide groove 2 only by one web of the guide profile 1.

[0032] The bridge has a widening at its free end, which extends beyond part of the groove base of the outer groove 3 and the groove base of the guide groove 2.

[0033] Preferably, one of the outer grooves 3 is separated from the guide groove 2 by a hollow leg of the guide profile 1, which hollow leg has a hollow chamber 7. The hollow leg has two outer webs, the free end of the first web having a widening that projects beyond part of the groove base of the guide groove 2, and the free end of the second web having a widening that projects beyond part of the groove base of an outer groove 3. Preferably, a T-slot 4 is located between the two webs, the opening of which is oriented towards the openings of the outer grooves 3 and the guide groove 2.

[0034] Adjoining the two outermost grooves 3, the guide profile 1 has an outer hollow leg, each leg having a hollow chamber 7. The web of the outer leg facing the respective outermost groove 3 has a widening that projects beyond part of the groove base of the respective outermost groove 3. The two outermost legs preferably each have a T-slot 4, the opening of which is aligned with the openings of the outermost grooves 3 and the guide groove 2.

[0035] The groove bottoms of grooves 2, 3, 4 are preferably parallel to each other. The groove walls of grooves 2, 3, 4 are preferably parallel to each other.

[0036] The areas of the webs defining the guide groove 2 that project above the groove base are preferably inclined on the side facing the groove base. Preferably, as shown, the groove base is also inclined in these areas, so that below the areas projecting above the groove base there is a conical section of the groove which tapers outwards with respect to the center of the guide groove 2.

[0037] At least, preferably exactly, one of the two outer legs has a groove 5, which is configured as a T-slot and is narrower than the other grooves 2, 3, 4. Preferably, this leg has a T-slot 4 and the groove 5, wherein the two webs defining the T-slot 4 are shorter than the other webs defining the other grooves of the profile. The groove 5 is preferably located further outwards than the T-slot 4, with an outer web 16 of the guide profile 1 adjoining the groove 5 on the outside, which is projected beyond the shorter webs of the T-slot 4 adjacent to the groove 5. The walls of the groove 5 are preferably inclined to those of the other grooves 2, 3, 4. The groove 5 is preferably a T-slot, wherein the projections tapering the groove 5 are spaced apart from the free end of the outer web 16.

[0038] The guide profile 1 has several hollow chambers 6 in the area behind the grooves 2, 3, 4, 5, which are separated from each other by webs. The hollow chambers 6 are separated from the groove bottoms of the grooves 2, 3 by webs. The outer surface of the guide profile 1 facing away from the openings of the grooves 2, 3, 4, 5 is preferably flat, straight, and closed. The four outer surfaces of the guide profile 1 preferably form a rectangle. This imaginary rectangle preferably has, as shown, three smooth outer surfaces and one inner surface (the side with the openings of the grooves), wherein preferably at least some of the legs defining the grooves project to the inner edge of the rectangle (see dotted line).

[0039] Preferably, the guide profile 1 has a further hollow chamber 7 in the area behind each of the T-slots 4, which projects further towards the open ends of the T-slots 4 compared to the hollow chambers 6, wherein the further hollow chambers 7 are separated from the hollow chambers 6 by webs.

[0040] Preferably, at least two hollow chambers 6 each contain a guide or screw channel 8. The guide or screw channels 8 are preferably formed by two webs projecting into the hollow chamber 6, which have a free end within the hollow chamber 6. The webs can be bent as shown, so that the guide or screw channel 8 has a cross-section as a circle open at one end.

[0041] In the embodiment where the outer grooves 3 themselves form the positive guidance for the positively guided drive chain 12, there are no guide rails 11 in the outer grooves 3, so that the drive chain 12 is guided by the groove walls. With reference to the figures, in this embodiment, the components guide profile 1 and guide rails 11 are, unlike those shown, designed as a monolithic component manufactured by extrusion, so that the drive chain 12 is guided by the extruded profile itself.

[0042] Fig. Figure 2 shows the guide profile 1 with elements of a drive system of an elevator inserted therein.

[0043] The drive system includes the in Fig. Figure 1 shows a guide profile 1, a drive chain 12, a guide element 9, and two plastic guide rails 11, with the guide element 9 guided in the central guide groove 2. Further elements of the drive system and the elevator are not shown and can be taken from known devices. The guide element 9 is depicted as a sliding jaw.

[0044] The guide rails 11, made of plastic or another suitable material, are inserted into the two outer grooves 3. The drive chain 12 is positively guided in the guide rails 11.

[0045] The drive chain 12 can be inserted longitudinally into the guide rails 11 and is positively locked in the guide rails 11 transversely to the longitudinal direction. The guide rails 11 have a T-slot for the drive chain 12. The drive chain 12 slides in the guide rails 11, while the guide rails 11 are fixed in position within the guide profile 1.

[0046] The guide rails 11 can be inserted longitudinally into the two outer grooves 3 and are positively locked in the outer grooves 3 transversely to the longitudinal direction. The guide element 9 (or several guide elements 9) can be inserted longitudinally into the guide groove 2 and slide along the guide groove 2 or be guided in it by rollers. A connection between the guide element 9 and the car (or cabin or platform) of the elevator or lift is established via a blade 10 (or another element).

[0047] The guide element 9, in the form of a sliding jaw, preferably has sliding elements 15 made of plastic, which are located laterally on a central element of the sliding jaw. The sliding elements 15 are preferably conical, corresponding to the two conical sections of the guide groove 2. The sliding jaw is positively locked in the guide groove 2 by the sliding elements 15, transversely to the longitudinal direction of the guide profile 1. In one embodiment, the guide element 9 can have several rollers, particularly in the form of roller assemblies, which roll in the guide groove 2. The rollers can be shaped like the sliding elements shown and are located in the conical sections of the guide groove 2.

[0048] Bolts and / or screws 14 can be fixed into the guide or screw channels 8 on the end faces of the guide profile 1 (a fastening element clamped between the screw 14 and the profile is not shown). Centering pins can also be inserted into the guide or screw channels 8 to align several guide profiles when they are connected in series. Thus, several guide profiles 1 can be connected in series along the height of the elevator or lift. A track cover is preferably attached to at least one end of a guide profile or at least one end of several connected guide profiles 1, for example by means of dowels, in particular brass dowels, in the guide or screw channels 8.

[0049] As in Fig. As shown in Figure 2, a brush 13 is inserted into the groove 5. The brush 13 is a brush strip that extends longitudinally along the guide profile 1. The bristles of the brush 13 preferably project beyond the blade 10.

[0050] In Fig. Figure 3 illustrates possible variations of the arrangement of the guide profile 1, not to scale. The guide profile 1 is mounted on the inside or outside of a building. In a vertical elevator, the longitudinal direction of the guide profile 1 is vertical. The area occupied by the elevator, or in which the load carrier 18 of the elevator moves, is subsequently referred to as the elevator shaft 17, even though this area may be open on up to three sides. The elevator usually includes a second guide 19, in which a second guide element of the load carrier 18 is guided. The load carrier 18 can be open on up to four sides, or have a door 20 on each of up to four sides. In one embodiment, two doors 20 can be located parallel to each other on opposite sides of the load carrier 18.In another variant, a so-called corner variant, two doors can be located at an angle of 90° to each other on adjoining sides of the load carrier 18, so that the entry and exit of the elevator or lift are arranged at an angle of 90° to each other.

[0051] The second guide 19 preferably also has a drive system and thus also a drive chain.

[0052] For the second guide 19, a guide profile 1 according to the invention is preferably used, utilizing the guide groove 2 for the second guide element, wherein a second chain is positively guided in the guide rails 11 of the two outer grooves 3 of the second guide profile 1.

[0053] Less preferably, the guide profile of the second guide may differ from the guide profile according to the invention. For example, it may consist only of guide groove 2 and without a chain.

[0054] The load carrier 18 can have a roof or be open at the top. The motor for driving the drive chain 12 is not located on the load carrier 18, but is stationary in the lift shaft 17, either at the upper or preferably at the lower end of the guide profile 1.

[0055] The inner surface (the side with the groove openings) of the guide profile 1 preferably faces a side surface of the load-bearing structure 18. The straight rear side of the guide profile preferably faces a shaft wall. Less preferably, the inner surface can be at an angle of 90° to the side surface of the load-bearing structure 18 on which the guide profile 1 is located.

[0056] As in Fig. 3a and Fig. As illustrated in Figure 3b, the guide profile 1 and the second guide 19 can be located on opposite sides of the lift shaft 17 and the load carrier 18, respectively, preferably arranged in a mirror-image fashion. Advantageously, the load carrier 18 has doors 20 on at least one, preferably both, of the other two sides. The elevator or lift can also have a shear wall, with a door at the upper exit of the elevator or lift. In this case, the side of the load carrier 18 facing the shear wall is open.

[0057] As in Fig. As illustrated in 3a, the position of the guide profile 1 along the side can be freely chosen, for example approximately in the middle of the load carrier 18.

[0058] The preferred leadership profile is 1, as shown in Fig. Figure 3b illustrates the arrangement in the corner area of ​​the lift shaft 17 or the load-bearing beam 18. This leaves the side of the load-bearing beam 18, where the guide profile 1 is located, largely free, so that a door 20 could also be arranged here (and / or on the side of the second guide 19).

[0059] However, the one in 20 is better suited for a 90° arrangement of doors. Fig. 3c illustrates a variant. In this variant, the guide profile 1 and the second guide 19, preferably in the form of a second guide profile 1, are arranged on the same side of the lift shaft 17 or load-bearing beam 18, preferably at the two corner regions of the side. Preferably, at least one door 20 is located on one of the other three sides. In one embodiment, two opposing doors 20 are located on the two opposite free sides. In another embodiment, two doors 20 are located at a 90° angle on two adjoining free sides. In another embodiment, three doors 20 are located on the three adjoining free sides. This also applies to the variant of Fig. 3c the elevator can have at least one shear wall, with a door 20 at the upper end of the shear wall.

[0060] Furthermore, sufficient space can remain between guide profile 1 and the second guide 19 to accommodate another door 20.

Claims

[1] Guide profile (1) of an elevator or lift with a positively guided drive chain (12), wherein the guide profile (1) has a central guide groove (2) for a guide element (9) of the load carrier (18) of the elevator or lift, characterized by , that the guide profile (1) has two outer grooves (3) in which the positively guided drive chain (12) is located and wherein the outer grooves (3) and the middle guide groove (2) are each spaced apart from each other and their openings are aligned towards the same side of the guide profile (1) and wherein the guide profile (1) is an aluminum extrusion profile. [2] Leadership profile (1) according to claim 1, characterized by , that a guide rail (11) is received in each of the two outer grooves (3), wherein the guide rails (11) provide a positive guidance for the positively guided drive chain (12). [3] Leadership profile (1) according to claim 1, characterized by, that the outer grooves (3) themselves provide a positive guidance for the positively guided drive chain (12). [4] Guide profile (1) according to one of claims 1 to 3, characterized by , that the guide profile (1) has a groove (5) for inserting a brush (13), which is located on one side outside next to one of the outer grooves (3). [5] Guide profile (1) according to any one of claims 1 to 4, characterized by , that between one of the outer grooves (3) and the middle guide groove (2) there is a hollow leg which preferably has a T-slot (4). [6] Guide profile (1) according to any one of claims 1 to 5, characterized by , that on the outside adjacent to the outer grooves (3) there is a hollow leg which preferably has a T-slot (4). [7] Guide profile (1) according to any one of claims 1 to 6, characterized by, that the guide profile (1) has several hollow chambers (6) in the area behind the grooves (2, 3) which are separated from each other by webs. [8] Guide profile (1) according to claim 7, characterized by , that the guide profile (1) has a further hollow chamber (7) in the area behind each of the T-slots (4), which projects further towards the open ends of the T-slots (4) compared to the hollow chambers (6), wherein the further hollow chambers (7) are separated from the hollow chambers (6) by webs. [9] Guide profile (1) according to one of claims 7 to 8, characterized by , that at least two hollow chambers (6) each have a guide or screw channel (8). [10] Guide profile (1) according to any one of claims 1 to 9, characterized by , that the middle guide groove (2) and the two outer grooves (3) are T-slots. [11] Guide profile (1) according to any one of claims 1 to 10, characterized by, that the guide groove (2) is bounded by webs of the guide profile (1), wherein the webs each have areas that project beyond the groove base of the guide groove, wherein the areas of the webs bounding the guide groove (2) that project beyond the groove base of the guide groove (2) are inclined on the side facing the groove base and the groove base is also inclined in these areas, so that below the areas of the webs that project beyond the groove base there is a conical section of the guide groove (2) which tapers outwards with respect to the center of the guide groove (2). [12] Drive system of an elevator or lift comprising at least a guide profile (1), a drive chain (12), a guide element (9) for the load carrier (18) of the elevator or lift, wherein the guide profile (1) has a central guide groove (2) in which the guide element (9) is guided; characterized by, that the guide profile (1) has two outer grooves (3) in which the positively guided drive chain (12) is located and wherein the outer grooves (3) and the middle guide groove (2) are each spaced apart from each other and their openings are aligned towards the same side of the guide profile (1) and wherein the guide profile (1) is an aluminum extrusion profile. [13] Drive system of an elevator or lift according to claim 12 comprising at least two guide rails (11) which are inserted into the outer grooves (3), wherein the drive chain (12) is positively guided in the guide rails (11). [14] Drive system of an elevator or lift according to one of claims 12 and 13, characterized by , that this comprises two identical guide profiles (1) in which a guide element (9) of the load carrier (18) is guided.

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