ES2552853B1 - Device for measuring the tension of cables of lifting devices - Google Patents
Device for measuring the tension of cables of lifting devices Download PDFInfo
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- ES2552853B1 ES2552853B1 ES201530710A ES201530710A ES2552853B1 ES 2552853 B1 ES2552853 B1 ES 2552853B1 ES 201530710 A ES201530710 A ES 201530710A ES 201530710 A ES201530710 A ES 201530710A ES 2552853 B1 ES2552853 B1 ES 2552853B1
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- cables
- tension
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- support
- lifting devices
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/06—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using mechanical means
Abstract
Dispositivo de medida de la tensión de cables de aparatos elevadores, que comprende un conjunto de cuerpos sensores (1) cada uno de los cuales está configurado para medir la tensión de un respectivo cable (2) del aparato elevador, disponiéndose el conjunto de cuerpos sensores (1) sobre un soporte transversal (6) común respecto del cual los cuerpos sensores (1) son desplazables lateralmente para alinearse con un cable (2) del aparato elevador, incorporando cada cuerpo sensor (1) un soporte superior (3) y un soporte inferior (4), que proyectan hacia el exterior del cuerpo sensor (1), y entre los cuales se dispone apoyado un cable (2) del aparato elevador, y porque enfrentado al soporte transversal (6) se dispone una barra (8) para el tensado de los cables (2), quedando los cables (2) apoyados entre los soportes superior (3) e inferior (4) y tensados por la barra (8) en una zona intermedia entre los soportes superior (3) e inferior (4).Device for measuring the tension of cables of lifting devices, comprising a set of sensor bodies (1) each of which is configured to measure the voltage of a respective cable (2) of the lifting device, the set of sensor bodies being arranged (1) on a common transverse support (6) with respect to which the sensor bodies (1) are laterally movable to align with a cable (2) of the lifting apparatus, each sensor body (1) incorporating an upper support (3) and a lower support (4), which project towards the outside of the sensor body (1), and between which a cable (2) of the lifting device is provided, and because facing the transverse support (6) there is a bar (8) for tensioning the cables (2), the cables (2) being supported between the upper (3) and lower (4) supports and tensioned by the bar (8) in an intermediate area between the upper (3) and lower supports (4).
Description
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DESCRIPCIONDESCRIPTION
DISPOSITIVO DE MEDIDA DE LA TENSION DE CABLES DE APARATOS ELEVADORES Sector de la tecnicaMEASUREMENT DEVICE FOR THE TENSION OF CABLES OF LIFTING EQUIPMENT
La presente invencion esta relacionada con el control de la tension de cables sometidos a una traccion, tales como los de suspension de ascensores y sistemas de elevacion semejantes, proponiendo a tal efecto un dispositivo de medida que permite controlar de manera individualizada la tension de cada cable del sistema de elevacion, para proporcionar datos en funcion de los cuales se puede ajustar el sistema de elevacion correspondiente y establecer condiciones de seguridad en el mismo.The present invention is related to the control of the tension of cables subjected to a traction, such as those of suspension of elevators and similar lifting systems, proposing for this purpose a measuring device that allows to individually control the tension of each cable of the lifting system, to provide data based on which the corresponding lifting system can be adjusted and establish safety conditions therein.
Estado de la tecnicaState of the art
En las instalaciones de aparatos elevadores, tales como ascensores o montacargas, es esencial la disposicion de instrumentos de medida para el control de la carga a elevar, con el fin de evitar averfas y accidentes por sobrecargas.In the installations of lifting devices, such as elevators or forklifts, the provision of measuring instruments for the control of the load to be lifted is essential, in order to avoid breakdowns and accidents due to overloads.
A este respecto son conocidas las soluciones que permiten medir directamente sobre los cables la tension que crean en ellos las cargas a las que se hallan sometidos. Las Patentes ES2168163 y ES2190767, del mismo titular que la presente invencion, dan a conocer sistemas de medida que permiten controlar de manera conjunta la tension de todos los cables de un aparato elevador, pero no permiten establecer un control individual de los cables, lo cual limita la utilidad de la aplicacion, ya que no suministran los datos necesarios para hacer correcciones en la instalacion de los cables a efectos de ajustar la tension de carga individual de todos ellos de un modo equivalente, y por otra parte, dicha solucion limita tambien las posibilidades de la aplicacion cuando los cables se hallan muy separados entre si.In this respect, the solutions that allow measuring directly on the cables the tension created by the loads to which they are subjected are known are known. Patents ES2168163 and ES2190767, of the same holder as the present invention, disclose measurement systems that allow joint control of the tension of all cables of a hoisting apparatus, but do not allow for individual control of the cables, which it limits the utility of the application, since they do not provide the necessary data to make corrections in the installation of the cables in order to adjust the individual load voltage of all of them in an equivalent way, and on the other hand, said solution also limits the possibilities of the application when the cables are very separated from each other.
Por otro lado, los Modelos de Utilidad ES1055746U y ES1069860U, tambien del mismo solicitante de la presente invencion, dan a conocer sistemas de medida que permiten controlar la tension individual de un cable de un aparato elevador. Sin embargo, estas soluciones no resultan optimas en los casos en los que el aparato elevador dispone de varios cables, y se requiere controlar la tension de carga de todos ellos. En este caso, la instalacion de sensores individuales por cada cable resulta complicada, ya que el instaladorOn the other hand, Utility Models ES1055746U and ES1069860U, also of the same applicant of the present invention, disclose measurement systems that allow the individual tension of a cable of a lifting device to be controlled. However, these solutions are not optimal in cases where the lifting device has several cables, and it is necessary to control the load voltage of all of them. In this case, the installation of individual sensors for each cable is complicated, since the installer
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debe disponer individualmente un dispositivo de medida por cada cable, lo cual aumenta considerablemente el tiempo de instalacion. Ademas, debido a las restricciones de espacio existentes en este tipo de instalaciones, y principalmente en las instalaciones donde los cables estan muy proximos entre si, no es posible disponer todos los dispositivos de medida a la misma altura, es decir paralelos entre si, lo cual obliga al instalador a disponer cada dispositivo de medida sobre su cable correspondiente a diferentes alturas, aumentandose por tanto en mayor medida el tiempo de instalacion.a measuring device must be individually arranged for each cable, which considerably increases the installation time. In addition, due to the existing space restrictions in this type of installation, and mainly in installations where the cables are very close to each other, it is not possible to arrange all the measuring devices at the same height, that is, parallel to each other, which forces the installer to arrange each measuring device on its corresponding cable at different heights, thus increasing the installation time to a greater extent.
Se hace por tanto necesario un dispositivo de medida de la tension de los cables de aparatos elevadores que sea de facil instalacion y que permita controlar de forma individualizada cada uno de los cables de un aparato elevador.It is therefore necessary a device for measuring the tension of the cables of lifting devices that is easy to install and that allows individual control of each of the cables of a lifting device.
Objeto de la invencionObject of the invention
La presente invencion propone un dispositivo de medida de la tension de cables de aparatos elevadores que permite controlar de manera individualizada la tension de todos los cables del aparato elevador, garantizando unas condiciones de seguridad optimas de la instalacion. Asimismo se obtiene un dispositivo versatil que puede adaptarse a aparatos elevadores con diferente numero de cables, o diferentes distancias de separacion entre cables.The present invention proposes a device for measuring the tension of cables of lifting devices that allows to individually control the tension of all cables of the lifting device, guaranteeing optimum safety conditions of the installation. A versatile device is also obtained that can be adapted to lifting devices with different number of cables, or different separation distances between cables.
El dispositivo de medida de la tension de cables de aparatos elevadores de la invencion comprende un conjunto de cuerpos sensores, cada uno de los cuales esta configurado para medir la tension de un respectivo cable del aparato elevador, disponiendose el conjunto de cuerpos sensores sobre un soporte transversal comun a todos ellos y respecto del cual los cuerpos sensores pueden desplazarse lateralmente para alinearse con un respectivo cable del aparato elevador. De esta manera, el dispositivo de medida permite controlar de forma independiente la tension de cada cable, y al disponerse los cuerpos sensores sobre un soporte transversal comun, los cuerpos sensores pueden adaptarse a instalaciones con diferentes distancias entre cables.The cable tension measuring device of lifting devices of the invention comprises a set of sensor bodies, each of which is configured to measure the tension of a respective cable of the lifting device, the set of sensor bodies being arranged on a support transverse common to all of them and with respect to which the sensor bodies can move laterally to align with a respective cable of the lifting apparatus. In this way, the measuring device makes it possible to independently control the tension of each cable, and by placing the sensor bodies on a common transverse support, the sensor bodies can be adapted to installations with different distances between cables.
Cada cuerpo sensor incorpora un soporte superior y un soporte inferior, proyectados hacia el exterior del cuerpo sensor, y entre los cuales se dispone apoyado un cable del aparato elevador, y enfrentado al soporte transversal se dispone una barra para el tensado de los cables, de manera que en condiciones de uso del dispositivo de medida, los cables quedan apoyados entre los soportes superior e inferior de los cuerpos sensores, y quedan tensados por la barra en una zona intermedia entre los soportes superior e inferior.Each sensor body incorporates an upper support and a lower support, projected towards the outside of the sensor body, and between which a cable of the lifting device is arranged, and facing the transverse support is a bar for tensioning the cables, of so that under conditions of use of the measuring device, the cables are supported between the upper and lower supports of the sensor bodies, and are tensioned by the bar in an intermediate zone between the upper and lower supports.
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Cada cuerpo sensor tiene una forma prismatica rectangular con una cara frontal y una cara trasera unidas por unas caras laterales, presentado las caras frontal y trasera una anchura correspondiente al diametro de un cable del aparato elevador, de manera que al tener los cuerpos sensores una anchura similar al diametro de los cables, el dispositivo de medida se puede aplicar a aparatos elevadores en donde los cables esten muy proximos entre si, facilitandose por tanto la instalacion por parte del operario.Each sensor body has a rectangular prismatic shape with a front face and a rear face joined by side faces, the front and rear faces having a width corresponding to the diameter of a cable of the lifting device, so that when the sensor bodies have a width Similar to the diameter of the cables, the measuring device can be applied to lifting devices where the cables are very close to each other, thus facilitating the installation by the operator.
El soporte superior y el soporte inferior de los cuerpos sensores presentan una forma concava y reciproca a la forma circular de los cables, de manera que en condiciones de uso del dispositivo de medida se establece una retencion lateral de los cables, mejorandose asf la medicion de la tension.The upper support and the lower support of the sensor bodies have a concave and reciprocal shape to the circular shape of the cables, so that in conditions of use of the measuring device a lateral retention of the cables is established, thus improving the measurement of the tension.
Adicionalmente, se ha previsto que cada cuerpo sensor incorpore, entre el soporte superior y el soporte inferior, un soporte intermedio que presenta igualmente una forma concava reciproca a la forma circular de los cables, de manera que dicho soporte intermedio garantiza igualmente una retencion lateral de los cables.Additionally, it is provided that each sensor body incorporates, between the upper support and the lower support, an intermediate support which also has a reciprocal concave shape to the circular shape of the cables, so that said intermediate support also guarantees a lateral retention of the cables.
Los cuerpos sensores presentan una abertura que se dispone equidistante respecto de los soportes superior e inferior, en donde se introduce el soporte transversal, de manera que cuando el dispositivo de medida esta situado entre los cables del aparato elevador, la tension de los cables provoca que el dispositivo quede alineado con respecto de los cables sin posibilidad de bascular.The sensor bodies have an opening that is equidistant from the upper and lower supports, where the transverse support is introduced, so that when the measuring device is located between the cables of the lifting device, the tension of the cables causes The device is aligned with respect to the cables without the possibility of tilting.
Los cuerpos sensores disponen de unos alojamientos en donde se ubican unos sensores adaptados para medir la variacion de la tension en los cables. Se ha previsto que los sensores sean unas galgas extensiometricas de flexion. En relacion con dichos alojamientos en donde se ubican los sensores, los cuerpos sensores presentan unas hendiduras que facilitan la flexion del cuerpo sensor por dicha zona, garantizando una deteccion mas eficiente de cualquier variacion en la tension de los cables.The sensor bodies have housings where sensors adapted to measure the variation of the tension in the cables are located. The sensors are expected to be flexi strain gauges. In relation to said housings where the sensors are located, the sensor bodies have grooves that facilitate the flexion of the sensor body through said area, guaranteeing a more efficient detection of any variation in the tension of the cables.
La barra para el tensado de los cables se sujeta respecto del soporte transversal mediante unos tornillos que se disponen en los extremos del soporte transversal, disponiendose sobre los tornillos, entre la barra y el soporte transversal, unas arandelas intercambiables. Asf, mediante el empleo de arandelas de diferente longitud, se puede regular la distancia entre la barra y los cuerpos sensores, permitiendo que el dispositivo de medida pueda adaptarse a cables de diferentes diametros.The cable tensioning bar is fastened with respect to the transverse support by means of screws that are arranged at the ends of the transverse support, with interchangeable washers arranged on the screws between the bar and the transverse support. Thus, by using washers of different lengths, the distance between the bar and the sensor bodies can be regulated, allowing the measuring device to adapt to cables of different diameters.
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Con todo ello asf, se obtiene un dispositivo de medida de la tension de cables de aparatos elevadores que por sus caracterfsticas constructivas y funcionales resulta de aplicacion preferente para la funcion a la que se halla destinado, permitiendo controlar de manera individualizada la tension de todos los cables del aparato elevador, y permitiendo facilitar la instalacion al operario al permitir su adaptacion a aparatos elevadores con diferente numero de cables, o diferentes distancias de separacion entre cables.With all of this, a device for measuring the tension of cables of lifting devices is obtained which, due to their constructive and functional characteristics, is of preferential application for the function to which it is intended, allowing to individually control the tension of all cables of the lifting device, and allowing easy installation to the operator by allowing adaptation to lifting devices with different number of cables, or different distances between cables.
Descripcion de las figurasDescription of the figures
La figura 1 muestra una vista en perspectiva de un ejemplo de realizacion del dispositivo de medida de la tension de cables de aparatos elevadores de la invencion, configurado para un aparato elevador de cuatro cables.Figure 1 shows a perspective view of an example of embodiment of the cable tension measuring device of lifting devices of the invention, configured for a four-wire lifting device.
La figura 2 muestra una vista lateral del dispositivo de medida de la figura anterior.Figure 2 shows a side view of the measuring device of the previous figure.
La figura 2A muestra una vista lateral de uno de los cuerpos sensores del dispositivo de medida.Figure 2A shows a side view of one of the sensor bodies of the measuring device.
La figura 3 muestra una vista frontal del dispositivo de medida de la figura 1.Figure 3 shows a front view of the measuring device of Figure 1.
La figura 4 muestra una vista en perspectiva de otro ejemplo de realizacion del dispositivo de medida de la tension de cables de aparatos elevadores, configurado para un aparato elevador de ocho cables.Figure 4 shows a perspective view of another example of the realization of the cable tension measuring device of lifting devices, configured for an eight-wire lifting device.
La figura 5 muestra una vista en perspectiva lateral del dispositivo de medida de la figura anterior.Figure 5 shows a side perspective view of the measuring device of the previous figure.
Descripcion detallada de la invencionDetailed description of the invention
El dispositivo de medida de la presente invencion comprende un conjunto de cuerpos sensores (1) configurados para medir la tension de los cables (2) de un aparato elevador, en donde cada uno de dichos cuerpos sensores (1) esta adaptado para recibir un cable (2) del aparato elevador y controlar asf de manera individualizada la tension de cada cable (2).The measuring device of the present invention comprises a set of sensor bodies (1) configured to measure the tension of the cables (2) of a lifting device, wherein each of said sensor bodies (1) is adapted to receive a cable (2) of the lifting device and individually control the tension of each cable (2).
En el ejemplo de realizacion de la figura 1 se ha representado un dispositivo de medida con cuatro cuerpos sensores (1) configurado para ser empleado en un aparato elevador deIn the exemplary embodiment of Figure 1, a measuring device with four sensor bodies (1) configured to be used in a lifting device of FIG.
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cuatro cables (2), por motivos de claridad en dicha figura no se han representado los cables (2) de la instalacion. En el ejemplo de realizacion de la figura 4 se ha representado un dispositivo de medida con ocho cuerpos sensores (1) configurado para ser empleado en un aparato elevador de ocho cables (2). De esta manera, mediante la adicion o supresion de cuerpos sensores (1), el dispositivo de medida puede adaptarse a aparatos elevadores con diferentes numeros de cables (2).four cables (2), for reasons of clarity in this figure the cables (2) of the installation have not been represented. In the exemplary embodiment of figure 4, a measuring device with eight sensor bodies (1) is configured to be used in an eight-wire lifting device (2). In this way, by adding or removing sensor bodies (1), the measuring device can be adapted to lifting devices with different numbers of cables (2).
Los cuerpos sensores (1) del dispositivo de medida tienen una configuracion prismatica rectangular, en donde cada cuerpo sensor (1) dispone de una cara frontal (1.1) y una cara trasera (1.2) que se unen entre si por unas caras laterales (1.3), presentando las caras frontal (1.1) y trasera (1.2) una anchura menor que la anchura de las caras laterales (1.3).The sensor bodies (1) of the measuring device have a rectangular prismatic configuration, where each sensor body (1) has a front face (1.1) and a rear face (1.2) that are joined together by side faces (1.3 ), the front (1.1) and rear (1.2) faces having a width smaller than the width of the side faces (1.3).
Cada cuerpo sensor (1) incorpora un soporte superior (3) y un soporte inferior (4) en relacion con los extremos superior e inferior de su cara frontal (1.1), proyectando dichos soportes superior (3) e inferior (4) hacia el exterior de dicha cara frontal (1.1), de manera que los cables (2) del dispositivo elevador quedan apoyados entre dichos soportes superior (3) e inferior (4) del cuerpo sensor (1).Each sensor body (1) incorporates an upper support (3) and a lower support (4) in relation to the upper and lower ends of its front face (1.1), projecting said upper (3) and lower (4) supports towards the exterior of said front face (1.1), so that the cables (2) of the lifting device are supported between said upper (3) and lower (4) supports of the sensor body (1).
Adicionalmente, cada cuerpo sensor (1) incorpora un soporte intermedio (5) que proyecta igualmente hacia el exterior de dicha cara frontal (1.1) y que se encuentra equidistante respecto del soporte superior (3) y del soporte inferior (4).Additionally, each sensor body (1) incorporates an intermediate support (5) that also projects outwardly from said front face (1.1) and that is equidistant from the upper support (3) and the lower support (4).
Se ha previsto que los soportes superior (3), inferior (4), e intermedio (5) del cuerpo sensor (1) sean unos asientos de forma concava reciproca a la forma circular de los cables (2), de manera que se obtiene un adecuado posicionamiento de los cables (2) sobre los soportes (3, 4, 5) de los cuerpos sensores (1), garantizando en todo momento que no se produzcan desplazamientos laterales que puedan entorpecer la medida de la tension de los cables (2).It is provided that the upper (3), lower (4), and intermediate (5) supports of the sensor body (1) are reciprocally concave seats to the circular shape of the cables (2), so that it is obtained an adequate positioning of the cables (2) on the supports (3, 4, 5) of the sensor bodies (1), guaranteeing at all times that there are no lateral displacements that can hinder the measurement of the tension of the cables (2 ).
Los cuerpos sensores (1) del dispositivo de medida se disponen paralelos entre si, quedando los cuerpos sensores (1) enfrentados por sus caras laterales (1.3). Se ha previsto que la anchura de los cuerpos sensores (1), es decir la anchura de sus caras frontal (1.1) y trasera (1.2), sea sustancialmente identica al diametro de un cable (2) del aparato elevador. Con esta configuracion, los cuerpos sensores (1) pueden disponerse proximos entre si para adaptarse a aparatos elevadores con diferentes numeros de cables (2), optimizandose asf el espacio ocupado por el dispositivo de medida, lo cual resulta ventajoso en este tipo de instalaciones en donde el espacio es reducido.The sensor bodies (1) of the measuring device are arranged parallel to each other, the sensor bodies (1) being faced by their lateral faces (1.3). It is envisioned that the width of the sensor bodies (1), that is to say the width of its front (1.1) and rear (1.2) faces, is substantially identical to the diameter of a cable (2) of the lifting apparatus. With this configuration, the sensor bodies (1) can be arranged next to each other to adapt to lifting devices with different numbers of cables (2), thus optimizing the space occupied by the measuring device, which is advantageous in this type of installation in Where space is reduced.
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El conjunto de cuerpos sensores (1) van montados sobre un soporte transversal (6) comun en forma de barra cilmdrica que se dispone en perpendicular a la direccion de los cables (2) del aparato elevador. Para ello, cada cuerpo sensor (1) presenta en la zona media de sus caras laterales (1.3), a una distancia equidistante entre el soporte superior (3) y el soporte inferior (4), una abertura (7) por la que se introduce el soporte transversal (6). Con esta disposicion, sobre el soporte transversal (6) se pueden disponer tantos cuerpos sensores (1) como cables (2) disponga la instalacion. Asimismo, los cuerpos sensores (1) pueden desplazarse lateralmente sobre el soporte transversal (6) para que el dispositivo de medida pueda adaptarse a instalaciones con diferentes distancias entre cables (2), quedando cada cuerpo sensor (1) alineado con su respectivo cable (2) a controlar.The set of sensor bodies (1) are mounted on a common transverse support (6) in the form of a cylindrical bar that is arranged perpendicular to the direction of the cables (2) of the lifting device. To do this, each sensor body (1) has an opening (7) in the middle of its lateral faces (1.3), at an equidistant distance between the upper support (3) and the lower support (4). Insert the cross support (6). With this arrangement, as many sensor bodies (1) as cables (2) can be installed on the transverse support (6). Likewise, the sensor bodies (1) can move laterally on the transverse support (6) so that the measuring device can adapt to installations with different distances between cables (2), each sensor body (1) being aligned with its respective cable ( 2) to control.
Enfrentado al soporte transversal (6), el dispositivo de medida incorpora una barra (8) para el tensado de los cables (2). La barra (8) se sujeta respecto del soporte transversal (6) mediante unos tornillos (9) que se disponen en los extremos de dicho soporte transversal (6) proyectados hacia el exterior. Sobre los tornillos (9), en la zona definida entre la barra (8) y el soporte transversal (6), se incluyen unas arandelas (10) intercambiables que determinan una separacion entre los cuerpos sensores (1) y dicha barra (8) para el tensado de cables. De esta manera, mediante el empleo de arandelas (10) de diferente longitud se puede regular la distancia entre la barra (8) y los cuerpos sensores (1), permitiendo que el dispositivo de medida pueda adaptarse a cables (2) de diferentes diametros.Faced with the transverse support (6), the measuring device incorporates a bar (8) for tensioning the cables (2). The bar (8) is fastened with respect to the transverse support (6) by means of screws (9) that are arranged at the ends of said transverse support (6) projected outwards. On the screws (9), in the area defined between the bar (8) and the transverse support (6), interchangeable washers (10) are included that determine a separation between the sensor bodies (1) and said bar (8) for tensioning cables. In this way, by using washers (10) of different lengths, the distance between the bar (8) and the sensor bodies (1) can be adjusted, allowing the measuring device to adapt to cables (2) of different diameters .
Con todo ello asf, el dispositivo de medida en condiciones de uso es aplicable con respecto a los cables (2) sustentadores de un aparato elevador tal y como se muestra en las figuras 2, 4 y 5. Asf, para el montaje del dispositivo de medida sobre los cables (2) de una instalacion, en primer lugar se seleccionan tantos cuerpos sensores (1) como cables (2) se requiera controlar en la instalacion, y se disponen los cuerpos sensores (1) en el soporte transversal (6) seleccionando una separacion lateral entre ellos que se corresponde con la separacion lateral entre los cables (2), quedando por tanto cada cable (2) alineado con su respectivo cuerpo sensor (1). Seguidamente se disponen los cables (2) haciendo contacto con los soportes superior (3) e inferior (4) de los cuerpos sensores (1), y se disponen sobre los tornillos (9) unas arandelas (10) correspondientes al diametro de los cables (2) de la instalacion.With all this, the measuring device in conditions of use is applicable with respect to the cables (2) supporting a lifting device, as shown in Figures 2, 4 and 5. Asf, for mounting the device As measured on the cables (2) of an installation, in the first place as many sensor bodies (1) as cables (2) are selected to be controlled in the installation, and the sensor bodies (1) are arranged in the transverse support (6) selecting a lateral separation between them that corresponds to the lateral separation between the cables (2), therefore each cable (2) being aligned with its respective sensor body (1). Then the cables (2) are arranged making contact with the upper (3) and lower (4) supports of the sensor bodies (1), and washers (10) corresponding to the cable diameter are arranged on the screws (9) (2) of the installation.
Posteriormente, se dispone la barra (8) sobre los cables (2), de manera se aprietan los tornillos (9) hasta que la barra (8) quede apretada contra las arandelas (10), y estas contra el soporte transversal (6), estableciendose de esta manera una curvatura de los cables (2),Subsequently, the bar (8) is arranged on the cables (2), so that the screws (9) are tightened until the bar (8) is tightened against the washers (10), and these against the transverse support (6) , thus establishing a curvature of the cables (2),
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como muestra en detalle en la vista lateral de las figuras 2 y 5. Asf, los cables (2) quedan tensados, contactando cada cable (2) por su parte trasera con el soporte superior (3) y el soporte inferior (4) de un cuerpo sensor (1), y por su parte delantera con la barra (8). Asimismo, cada cable (2) queda retenido lateralmente por la forma concava de los soportes superior (3), inferior (4) e intermedio (5) de los cuerpos sensores (1).as shown in detail in the side view of figures 2 and 5. Thus, the cables (2) are tensioned, each cable (2) contacting its rear part with the upper support (3) and the lower support (4) of a sensor body (1), and at the front with the bar (8). Likewise, each cable (2) is retained laterally by the concave shape of the upper (3), lower (4) and intermediate (5) supports of the sensor bodies (1).
Como se observa en la figura 2A, los soportes superior (3) e inferior (4) proyectan hacia el exterior respecto de la cara frontal (1.1) del cuerpo sensor (1) en una distancia identica, mientras que el soporte intermedio (5) proyecta hacia el exterior respecto de la cara frontal en una distancia inferior a la que proyectan los soportes superior (3) e inferior (4). Esta disposicion del soporte intermedio (5) permite que al disponerse la barra (8) sobre los cables (2) estos adquieran una disposicion curvada y queden correctamente tensionados.As can be seen in Figure 2A, the upper (3) and lower (4) supports project outwards from the front face (1.1) of the sensor body (1) at an identical distance, while the intermediate support (5) projects outwards from the front face at a distance shorter than the one projected by the upper (3) and lower (4) supports. This arrangement of the intermediate support (5) allows that when the bar (8) is arranged on the cables (2) they acquire a curved arrangement and are properly tensioned.
En las caras laterales (1.3) de los cuerpos sensores (1), en una posicion superior e inferior respecto de la abertura (7), se disponen unos alojamientos (11) en donde son susceptibles de alojarse unos sensores (12) que miden la variacion de la tension en los cables (2). Los sensores (12) son unos sensores de presion, como por ejemplo unas galgas extensiometricas de flexion que se disponen adheridas a la pared interna de los alojamientos (11). Se ha previsto que los sensores (12) se dispongan en el alojamiento (11) inferior que se encuentra proximo a unos cables (13) de transmision de datos, si bien los sensores (12) podrfan ubicarse en el alojamiento (11) superior o en ambos. Los alojamientos (11) de los cuerpos sensores (1) se cierran mediante unas tapas (14).In the lateral faces (1.3) of the sensor bodies (1), in an upper and lower position with respect to the opening (7), some housings (11) are arranged where sensors (12) that measure the variation of the tension in the cables (2). The sensors (12) are pressure sensors, such as flexi strain gauges that are attached to the inner wall of the housings (11). It is envisioned that the sensors (12) are arranged in the lower housing (11) which is close to data transmission cables (13), although the sensors (12) could be located in the upper housing (11) or in both. The housings (11) of the sensor bodies (1) are closed by means of covers (14).
Los cuerpos sensores (1) presentan en sus caras frontales (1.1) y traseras (1.2), en relacion con los alojamientos (11), unas hendiduras (15) de forma semicircular que definen una zona de debilitamiento del cuerpo sensor (1) para favorecer su flexion por dicha zona, y permitir una mejor medicion de la tension de los cables (2). De esta manera, cuando los cables (2) estan soportando la carga del aparato elevador, estos se encuentran sometidos a traccion, y los cuerpos sensores (1) estan ligeramente deformados a la altura de dichas hendiduras (15), sin embargo, cuando algun cable (2) pierde tension, los sensores (12) detectan esa variacion, y al estar precisamente ubicadas en relacion con las hendiduras (15), se garantiza una deteccion mas eficiente de cualquier variacion en la tension de los cables (2).The sensor bodies (1) have on their front (1.1) and rear (1.2) faces, in relation to the housings (11), semicircular grooves (15) that define a weakening zone of the sensor body (1) to favor its flexion through said area, and allow a better measurement of the tension of the cables (2). Thus, when the cables (2) are supporting the load of the lifting apparatus, they are subject to traction, and the sensor bodies (1) are slightly deformed at the height of said grooves (15), however, when some cable (2) loses tension, the sensors (12) detect that variation, and being precisely located in relation to the grooves (15), a more efficient detection of any variation in the tension of the cables (2) is guaranteed.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201530710A ES2552853B1 (en) | 2015-05-22 | 2015-05-22 | Device for measuring the tension of cables of lifting devices |
| PCT/ES2016/070375 WO2016189178A1 (en) | 2015-05-22 | 2016-05-18 | Device for measuring the tension of cables of lifting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201530710A ES2552853B1 (en) | 2015-05-22 | 2015-05-22 | Device for measuring the tension of cables of lifting devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2552853A1 ES2552853A1 (en) | 2015-12-02 |
| ES2552853B1 true ES2552853B1 (en) | 2016-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201530710A Expired - Fee Related ES2552853B1 (en) | 2015-05-22 | 2015-05-22 | Device for measuring the tension of cables of lifting devices |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2552853B1 (en) |
| WO (1) | WO2016189178A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3578494A1 (en) * | 2018-06-06 | 2019-12-11 | Inventio AG | Lift facility and method for monitoring the belt condition |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0986828A (en) * | 1995-09-29 | 1997-03-31 | Mitsubishi Denki Bill Techno Service Kk | Rope tension measuring device for elevator |
| ES2150364B1 (en) * | 1998-06-22 | 2001-06-01 | Micelect S L | INSTRUMENT OF MEASUREMENT OF PENDING MASSES FOR MACHINES THAT OPERATE WITH TRACTION CABLES. |
| ES2168163B2 (en) * | 1998-07-08 | 2003-04-01 | Micelect S L | DIRECT MEASUREMENT INSTRUMENT OF PENDING MASSES FOR MACHINES THAT OPERATE WITH TRACTION CABLES. |
| EP1475616B1 (en) * | 2002-01-23 | 2012-12-26 | Micelect, S.L. | Instrument for measuring suspended masses for machines that operate with traction cables |
| ES1055746Y (en) * | 2003-10-13 | 2004-04-16 | Micelect S L | VOLTAGE SENSOR FOR TRACTION CABLES. |
| ES1069860Y (en) * | 2009-03-10 | 2009-09-15 | Micelect S L | SENSOR FOR CONTROL OF CABLE VOLTAGE |
| EP2687834B8 (en) * | 2012-07-18 | 2015-10-21 | S2Tech S.r.l. | Measuring instrument and method for measuring an applied force |
| ES2461818B1 (en) * | 2012-11-20 | 2015-07-30 | Dinacell Electronica S.L. | Load cell for elevator cables. |
-
2015
- 2015-05-22 ES ES201530710A patent/ES2552853B1/en not_active Expired - Fee Related
-
2016
- 2016-05-18 WO PCT/ES2016/070375 patent/WO2016189178A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016189178A1 (en) | 2016-12-01 |
| ES2552853A1 (en) | 2015-12-02 |
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