Fastening system for guide rails and counterweights in elevator cabins

Abstract

To provide a fastening system for a guide rail and a flange and a bracket used for a balance weight of an elevator.SOLUTION: In a fastening system for a guide rail and a balance weight of a cabin for an elevator, one of wing-shaped parts (121) of an element (12) of a bracket (1) is vertical to a base part (b) of a guide rail (G). The other wing-like part (122) has an angular offset (α) with respect to the base part (b). A support region (a) of the bracket (1) is not parallel to the base part (b) of the guide rail (G). The bracket (1) is slidably mounted on any one of the elements (11), (12) and abuts on the base part (b) of the guide rail (G) for automatic centering. The flange (2) is directly or indirectly fixed to any one of the elements (11), (12) of the bracket (1) and has a single main body for restricting the movement of the guide rail (G).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The object of the present invention relates to an elevator guide rail and a fastening system for a counterweight, as well as a flange and a bracket used in this system.

Background Art

[0002] In this industrial sector, a "roller track" is considered a set of components that guide the movable parts of an elevator (the cabin and the counterweight). A set of roller tracks usually consists of the following main components: · Brackets or elements (brackets) for fixing and adjusting to the wall · Clamps or claws for fixing the guide rail to the bracket · Guide rails on which the cabin or counterweight slides or moves on wheels · Connection plates used to connect one guide rail to the next · Bolts for fixing each component

[0003] The flange must be able to withstand the forces that occur under the following various operating conditions of the elevator: 7] · Normal use (when the elevator moves vertically) · Loading and unloading of goods (when people or objects enter and leave the elevator through the door) · Operation of the security device (in case of abnormal situations where forces and load cases other than the previous cases occur).

[0004]

[0005] In order to fix the guide rail to the bracket, it is necessary to use flanges. To perform this fixing process, two flanges are used as a set, one on each side of the guide rail. There are various types of flanges in the market, and roughly speaking, they can be divided into the following three groups: • In the case of a high-pressure flange (forged flange), the torque applied to the bolt when tightening the flange is directly related to the friction on the guide rail. • This is a medium-pressure flange (elastic flange) that offers an improved level of friction compared to a forged flange. • An adjustable sliding flange (known by the applicant as an SCA flange) where the pressure acting through minimal contact between the flange and the guide rail results in low friction, and considering the high resistance and low frictional force, this flange is effective for all types of applications. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Spanish Patent Application Publication No. 2557505 [Patent Document 2] Spanish Patent Application Publication No. 2607429 [Patent Document 3] Spanish Patent Application Publication No. 2492791 [Patent Document 4] Japanese Patent Publication No. 2010-179993 [Patent Document 5] Japanese Patent Publication No. 2004-018260 [Overview of the project] [Problems that the invention aims to solve]

[0007] The challenge with forged flanges is that their extremely poor fit means they cannot be used in equipment where building settlement needs to be taken into consideration without sacrificing the size of the guide rails. The disadvantage of the guide rail size arises because the friction generated on the flange from a height of 40 meters must be taken into account. Thus, if the friction is small, the force transmitted to the guide rail by the flange will be small, making calculations according to EN standard 81-20 / 50 more advantageous.

[0008] A challenge with elastic flanges is that they are disadvantageous in equipment where a better coefficient of friction is required.

[0009] At the current level of technology, various fastening systems, flanges, and brackets are well known for supporting elevator guide rails in working parts where a low coefficient of friction is required, for example, particularly the applicant's patent documents 1-3 and other applicants' cited documents 4 and 5. [Means for solving the problem]

[0010] The object of the present invention is to reduce friction caused by the use of forged flanges and elastic flanges, or to eliminate the requirement of certain properties, such as easily adapting to various sizes of guide rails or being easy to assemble, in order to improve the calculation of guide rails according to EN standard 81-20 / 50 in standards where, for example, the types of flanges disclosed in Patent Documents 1 and 2 cannot be applied to guide rails of other dimensions.

[0011] In the fastening system for cabin guide rails and elevator counterweights according to the present invention, the flange used, whether forged, elastic, or SCA type, does not serve to fasten to the guide rail, but rather functions as a limiting retainer to prevent the guide rail from unintentionally separating, and this limiting retainer has a clearance on its underside that must be compensated for by selecting one of a set of options so that the guide remains fastened.

[0012] Since the guide rail does not need to be fixed in place initially, the components installed on the underside of the guide rail represent not only the final position of the guide rail but also the pressure acting on it. Lower pressure results in less friction between the components in contact with the guide rail, leading to better calculations of the guide rail.

[0013] To ensure that all assemblies performed are within acceptable friction limits, the recommended fastening systems have specific alternatives with different configuration options. All brackets or counterweight bridges used as equipment for supporting the assembly of cabin guide rails and counterweights are such that, when the arrangement is vertical in the drawing, one of the vertical elements (pieces) of the bracket's support area and the base of the guide rail are at the base of the guide rail, while the other wing provides a support area for the guide rail that forms an angular offset relative to this base, so the support area of ​​the bracket and the base of the guide rail are not parallel.

[0014] A fastening system for the guide rail and counterweight of an elevator cabin, comprising a bracket (1) for connecting the guide rail (G) to a fixed structure and a flange (2) for connecting the guide rail (G) to the bracket (1), characterized in the following ways: a) The bracket (1) consists of a first element (11) and a second element (12) having an "L"-shaped profile, assembled together by wing-shaped portions (111) and (121) substantially perpendicular to the base (b) of the guide rail (G), and the assembly is slidable by a first nut / bolt set (3); b) The flange (2) is assembled to slide onto the first element (11) or second element (12) of the bracket (1), and the second nut / bolt set (4) is used to bring the flange (2) into contact with the side and top surfaces of the wing-shaped part of the guide rail (G), thereby completing the assembly; c) In the wing-shaped portion (122) facing the base (b) of the guide rail (G), the bracket (1) has at least one support region (a) that forms an angular offset (α) with respect to the base (b); thereby, the support region (a) of the bracket (1) and the base (b) of the guide rail (G) are not parallel, and; d) having one or more supports (5) within the bracket (1) assembled to slide therein, said supports (5) restricting the movement of the guide rail (G) towards the bracket (1) while sliding in contact with the base (b) of the guide rail (G) during sliding.

[0015] The wing portion (122) facing the base (b) of the guide rail (G) further has a centered groove portion (122a), and shows at least one support region (a) having an angular offset (α) with respect to the base (b) of the guide rail (G), the guide rail of the cabin and the fastening system for the counterweight of the elevator according to claim 2.

[0016] The solution of the present invention applies to any guide rail in the technical field of elevators, regardless of whether it is for the connection / bracket of the cabin and / or counterweight and the guide rail, or for the wall of the elevator opening, the bridge of the counterweight, or any other fastening component.

[0017] Also, the recommended fastening system has one or two sliding supports to which the bracket is attached to one of its plurality of elements, the support abutting against the base of the guide rail to restrict the movement of the guide rail (G) towards the bracket (1), and the flange being characterized by having a single body directly or indirectly fastened to one of the plurality of elements of the bracket to restrict the movement of the guide rail.

[0018] Other configurations and advantages of the present invention can be inferred from the following description and the dependent claims.

[0019] For a better understanding of the object of the present invention, the attached drawings show, in this case, a preferred realization which can be subject to accessory modifications without impairing its essence:

Brief Description of the Drawings

[0020] [Figure 1] Figure 1 shows an overall side view of a fastening system for a cabin guide rail and lift counterweight according to the present invention, in an example of realization in which the body (21) of the flange (2) itself defines a head (214) having a throat (214a) that restricts the movement of the guide rail (G). In this figure, the flange (2) has the same angle (α) as the bracket (1). [Figure 2] Figure 2 is an overall side view of the fastening system for cabin guide rails and elevator counterweights according to the present invention, which uses an asymmetrical washer (216) to pivot the flange (2) and adapt to an angle (α), as an alternative implementation. [Figure 3] Figure 3 is an overall perspective view showing all components in an assembly position for an alternative realization, where elements (11) and (12) of the bracket (1) are interchangeable (in fact, a single part usable in two positions), and the expansion of the support area (a) is achieved using several bolts (5) with rounded heads (50c). [Figure 4] Figure 4 shows an overall view with all parts attached for an alternative implementation in which the wing-shaped portion (122) of the bracket (1) is angled, the forged flange (2) has a bevel washer (216), and several bolts (5) with round heads (50c) are used. [Figure 5] Figure 5 shows an overall perspective view similar to Figure 3 for an alternative implementation. [Figure 6] Figure 6 shows an alternative implementation, representing the overall plan view corresponding to Figure 3 with all components installed. [Figure 7] Figure 7 shows the overall view in the plan view corresponding to Figure 5, with all parts installed. [Figure 8] Figure 8 shows an overall perspective view corresponding to Figure 4, with the asymmetrical washer (216) and all components in place for assembly. [Modes for carrying out the invention]

[0021] The following describes a practical and non-limiting implementation of this invention. Other methods of implementation are not entirely excluded, and in such cases, incidental modifications may be introduced as long as they do not impair the essence of the invention.

[0022] A fastening system for the guide rails and counterweights of an elevator cabin includes a bracket (1) and a flange (2), as in the known / cited prior art. The bracket (1) consists of an "L"-shaped first element (11) and a second element (12) that are assembled together in a sliding manner using a first nut / bolt set (3); The flange (2) consists of at least one component that is slidably attached to one of the elements (11), (12) of the bracket (1) using a second nut / bolt set (4); The flange (2) can be composed of various parts or, in the conventional way, of a single part.

[0023] The novelty of the fastening system for cabin guide rails and elevator counterweights according to the present invention is as follows: The bracket (1) has one of its second element (12) wing-shaped portions (121) perpendicular to the base (b) of the guide rail (G), and the other wing-shaped portion (122) forms an angular offset (α) with respect to the base (b) which occupies part or all of this wing-shaped portion (122); the support region (a) of the bracket (1) and the base (b) of the guide rail (G) are not parallel. The bracket (1) has one or more support members (5) slidably attached to one of its elements (11), (12), the support members (5) restrict the movement of the guide rail (G) by restricting the base (b) of the guide rail (G) from the front; The flange (2) is directly or indirectly fixed to one of the elements (11), (12) of the bracket (1) and has a single body (21) that restricts the movement of the guide rail (G).

[0024] The flange (2) can make lateral contact with the guide rail and can also make contact with the upper part of the wing-shaped section of the guide rail (G). If the guide rail is not fully fixed because the support (5) is not yet aligned and fixed, the guide rail (G) can be made to contact the flange (2), or a small opening can be made between them. Finally, when the support (5) is aligned and fixed, the guide rail (G) will be in contact with the flange (2) on the upper part of the wing-shaped section of the guide rail (G), and the system will remain in this state.

[0025] From this basic configuration, any alternative implementation that does not change, alter, or modify the proposed essential design is included in the scope of this invention.

[0026] In the embodiments shown in Figures 3 to 7, there are also two support members (5), each structured within a single bolt (5c) having a round head (50c) fastened with a nut / washer set (52) to a corresponding slot (114) provided in the wing-shaped portion (122) of the second element (12) of the bracket (1).

[0027] In the realization shown in Figures 5, 6, and 7, the wing-shaped portion (122) facing the base (b) of the guide rail (G) has a protruding / receiving recessed groove (122a). Although it is only shown as a groove (122a) in the drawings, the present invention also includes a shape that may protrude, which would require a similar explanation.

[0028] This groove (122a) is centered with respect to the base (b) of the guide rail (G).

[0029] The centered groove (122a) is formed in the support region (a) itself, so that the support (5), consisting of bolts (5c) with rounded heads (50c) that constitute the support for this embodiment, is raised relative to the rest of the wing portion (122). Whether the groove (122a) is parallel to the rest of the wing portion (122) as shown in Figure 5, or inclined, or positively inclined as shown in Figure 6, or negatively inclined as shown in Figures 3 and 7, is irrelevant to the purpose of the present invention.

[0030] The groove (122a) forms at least one support region (a) having an angular offset (α) with respect to the base (b) of the guide rail (G), and the support region (a) can be a central region (122c), a fixed region, or a lateral region (122d): Figure 7.

[0031] In Figure 7, two support regions (a) are shown within the groove (122a).

[0032] These support regions (a) have surfaces inclined with respect to the base (b) of the guide rail (G) that forms the required angular offset (α). The support body (5) is located within these support regions (a).

[0033] The wing-shaped portion (122) may have an angular offset, and the groove portion (122a) may form several support regions with additional angular offsets.

[0034] In these implementations, the body (21) of each flange (2) itself defines a head (214) having a throat (214a) that restricts the movement of the guide rail (G), and a threaded stud bolt (215) inserted directly into a corresponding slot (113) of one of the multiple elements (12) of the bracket (1) is secured via the bracket (1) by a nut (42a) inserted on the stud bolt (215) with washers (42b), (42c) interposed therebetween.

[0035] In the implementation example shown in Figure 8, the body (21) of each flange (2) is fixed within the bracket (1) by nuts (42a) inserted onto stud bolts (215) with asymmetrical washers (216) interposed between them. These asymmetrical washers (216) are arranged in pairs such that, by inserting the nuts (42a) onto the stud bolts (215), wing-shaped portions (122) that form an angular offset (α) with respect to the base (b) of the guide rail (G), which provides adaptability to the connection, are sandwiched between them.

[0036] The flanges (2) for the wing-shaped portion of the guide rail (G) can be made equal on the left and right sides, or symmetrical.

[0037] Materials, dimensions, proportions, and other incidental or secondary details may be changed, unless they alter, modify, or revise the proposed essential design.

[0038] The terminology used in this report accurately and faithfully reflects the stated purpose and should be understood in its broadest sense (and never in a restrictive sense).

Claims

1. A fastening system for a guide rail and counterweight of an elevator cabin, comprising a bracket (1) for connecting the guide rail (G) to a fixed structure, and a flange (2) for connecting the guide rail (G) to the bracket (1), wherein the fastening system includes: a) The bracket (1) is composed of a first element (11) and a second element (12) having an "L"-shaped profile, and is assembled together by wing-shaped portions (111) and (121) substantially perpendicular to the base (b) of the guide rail (G), and the assembly is slidable by a first nut / bolt set (3); b) The flange (2) is assembled to the first element (11) or second element (12) of the bracket (1) using a second nut / bolt set (4) so ​​as to slide in contact with the flange (2) via the side and top surfaces of the wing-shaped portion of the guide rail (G); c) In the wing-shaped portion (122) facing the base (b) of the guide rail (G), the bracket (1) has at least one support region (a) that forms an angular offset (α) with respect to the base (b); thereby the support region (a) of the bracket (1) and the base (b) of the guide rail (G) are not parallel, and; d) The support area (a) has one or more bolts (5) mounted to slide within the bracket (1), and these bolts (5) slide and contact the base (b) of the guide rail (G) to restrict the movement of the guide rail (G) toward the bracket (1). A fastening system for guide rails and counterweights of an elevator cabin, characterized by the above.

2. The fastening system for guide rails and counterweights of an elevator cabin according to claim 1, characterized in that each support (5) has a structure in which at least one bolt (5c) having a round head (50c) is fastened using a nut / washer set (52) to a corresponding slot (114) provided in the wing-shaped portion (122) of the second element (12) of the bracket (1).

3. The flange (2) body (21) itself defines a head (214) having a throat (214a) that restricts the movement of the guide rail (G), and the threaded stud bolt (215) is directly inserted into the corresponding slot (113) and fixed to the bracket (1) by a nut (42a) with washers (42b) and (42c) interposed through the slot (113), characterized in that A fastening system for the guide rail and counterweight of an elevator cabin according to claim 1.

4. Each flange (2) has a stud bolt (215) with a pair of asymmetric washers (216), and when the nut (42a) is inserted, the wing-shaped portion (122) which is angle-off (α) with respect to the base (b) of the guide rail (G) is sandwiched between the asymmetric washers (216), and the asymmetric washers (216) provide compatibility for the connection. The fastening system for the guide rail and counterweight of the elevator cabin according to claim 3.

5. The wing-shaped portion (122) facing the base portion (b) of the guide rail (G) also has a centered groove portion (122a) that forms at least one support region (a) having an angular offset (α) with respect to the base portion (b) of the guide rail (G), The fastening system for the guide rail and counterweight of the elevator cabin according to claim 2.

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