ES1236214U - SAFETY BRAKE DEVICE FOR PHOTOVOLTAIC FACILITIES (Machine-translation by Google Translate, not legally binding) - Google Patents

SAFETY BRAKE DEVICE FOR PHOTOVOLTAIC FACILITIES (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES1236214U
ES1236214U ES201931320U ES201931320U ES1236214U ES 1236214 U ES1236214 U ES 1236214U ES 201931320 U ES201931320 U ES 201931320U ES 201931320 U ES201931320 U ES 201931320U ES 1236214 U ES1236214 U ES 1236214U
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movement
panel
controlled
brake device
safety brake
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Granted
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ES1236214Y (en
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Diaz Juan Jose Castellano
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Brown Advance SA
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Brown Advance SA
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Publication of ES1236214Y publication Critical patent/ES1236214Y/en
Priority to PCT/ES2020/070473 priority patent/WO2021019115A1/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Photovoltaic Devices (AREA)

Abstract

Safety brake device for photovoltaic installations, in particular applicable to be incorporated into a structure of panels (2) of the type formed by solar panels (3) that, supported on a support post (4), have movement of solar tracking, is characterized by comprising at least one cable (6) or tape that, at one end is linked to at least one controlled winding mechanism (7) located in a midpoint of the panel (2), and that at the opposite end is attached to one end of the plate (3) of the ends of the panel (2); and where said mechanism (7) is provided with at least one axis (8) of controlled rotation with locking system, which allows controlled movement of the cable (6) or tape so that it is wound and unwound thereon when the movement occurs below a certain speed, specifically that programmed for solar tracking, but that is blocked when the movement is above that speed or occurs abruptly. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPCIÓNDESCRIPTION

DISPOSITIVO DE FRENO DE SEGURIDAD PARA INSTALACIONESSAFETY BRAKE DEVICE FOR FACILITIES

FOTOVOLTAICASPHOTOVOLTAICS

OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION

La invención, tal como expresa el enunciado de la presente memoria descriptiva, se refiere a un dispositivo de freno de seguridad para instalaciones fotovoltaicas que aporta, a la función a que se destina, ventajas y características, que se describen en detalle más adelante.The invention, as stated in the present specification, refers to a safety brake device for photovoltaic installations that provides, to the function to which it is intended, advantages and characteristics, which are described in detail below.

El objeto de la presente invención recae, concretamente, en un dispositivo que, aplicable para su incorporación en instalaciones de paneles solares móviles, se configura como sistema de seguridad para impedir el giro del seguidor solar cuando su movimiento es acelerado más de lo esperado por la acción del viento, impidiendo así que el seguidor solar entre en resonancia por consecuencia del viento.The object of the present invention falls specifically on a device that, applicable for incorporation into mobile solar panel installations, is configured as a security system to prevent the rotation of the solar tracker when its movement is accelerated more than expected by the wind action, thus preventing the solar tracker from resonating due to wind.

CAMPO DE APLICACIÓN DE LA INVENCIÓNFIELD OF APPLICATION OF THE INVENTION

El campo de aplicación de la presente invención se enmarca dentro del sector de la industria dedicada a la fabricación de aparatos y dispositivos accesorios para instalaciones fotovoltaicas.The field of application of the present invention is part of the industry sector dedicated to the manufacture of accessory devices and devices for photovoltaic installations.

ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION

Como es sabido, muchas de las instalaciones fotovoltaicas que conforman campos o granjas solares de extensión considerable, los paneles solares suelen estar incorporados a estructuras motorizadas que proporcionan el movimiento conjunto de dichos paneles por grupos para dotarlos de seguimiento solar, es decir, hacer que se vayan inclinando en función de la posición del sol con objeto de ofrecer una posición optima de captación, lo más perpendicular posible a la incidencia de los rayos del sol.As is known, many of the photovoltaic installations that make up fields or solar farms of considerable length, solar panels are usually incorporated into motorized structures that provide the joint movement of said panels by groups to provide them with solar tracking, that is, make them tilt depending on the position of the sun in order to offer an optimal position of capture, as perpendicular as possible to the incidence of sun rays.

Uno de los problemas de este tipo de instalaciones es que el viento, en ciertas circunstancias, provoca que las placas de los extremos, que son las que están más alejadas del motor que hace girar el eje al que van unidas todas las placas, entren en resonancia y se muevan (giren) a velocidades superiores que pueden provocar su rotura. Sería deseable, pues, poder bloquear dicho giro para evitar que tales placas entren en resonancia (que cada vez giren a mayor velocidad) y se rompan.One of the problems of this type of installation is that the wind, in certain circumstances, causes the end plates, which are those that are furthest from the motor that rotates the axis to which all the plates are attached, enter resonance and move (rotate) at higher speeds that can cause breakage. It would be desirable, then, to be able to block said rotation to prevent such plates from resonating (which are rotating at higher speeds) and breaking.

Para evitar dicho giro se puede utilizar la solución que se describe en el modelo de utilidad U201830695, cuyo titular es el propio solicitante de la presente invención, consistente en un cerrojo de seguridad basado en unas piezas de bloqueo de la barra horizontal que transmite el movimiento giratorio a las placas. Sin embargo, aunque es una buena solución, es de difícil implementación al tener que coincidir perfectamente dos piezas, ya que, con el tiempo las partes de mueven ligeramente y las piezas no encajan.To avoid such rotation, the solution described in the utility model U201830695 can be used, the holder of which is the applicant of the present invention, consisting of a safety lock based on horizontal bar locking parts that transmit the movement swivel to the plates. However, although it is a good solution, it is difficult to implement by having to perfectly match two pieces, since, over time the parts move slightly and the pieces do not fit.

También se conoce un sistema de amortiguadores unidos entre el poste y los extremos de la placa solar. Sin embargo los amortiguadores no resisten las altas fuerzas del viento y, además, solo tienen un recorrido determinado.Also known is a shock absorber system attached between the pole and the ends of the solar panel. However, the shock absorbers do not resist the high wind forces and, in addition, they only have a certain path.

El objetivo de la presente invención es, pues, proporcionar una solución alternativa, a la problemática descrita del giro de las placas externas y sin los inconvenientes de las soluciones actualmente conocidas. The objective of the present invention is therefore to provide an alternative solution to the described problem of the rotation of the external plates and without the drawbacks of the currently known solutions.

Por otra parte, y como referencia al estado actual de la técnica cabe señalar que, al menos por parte del solicitante, se desconoce la existencia de ningún otro dispositivo de freno de seguridad para instalaciones fotovoltaicas, ni ninguna otra invención de aplicación similar, que presente unas características técnicas, estructurales y constitutivas iguales o semejantes a las que presenta el que aquí se reivindica.On the other hand, and as a reference to the current state of the art, it should be noted that, at least by the applicant, the existence of any other safety brake device for photovoltaic installations, or any other invention of similar application, which presents technical, structural and constitutive characteristics equal to or similar to those presented here.

EXPLICACIÓN DE LA INVENCIÓNEXPLANATION OF THE INVENTION

El dispositivo de freno de seguridad para instalaciones fotovoltaicas que la invención propone se configura como la solución idónea al objetivo anteriormente señalado, estando los detalles caracterizadores que lo hacen posible y lo distinguen convenientemente recogidos en las reivindicaciones finales que acompañan la presente descripción.The safety brake device for photovoltaic installations that the invention proposes is configured as the solution suitable for the aforementioned objective, the characterizing details making it possible and distinguishing it conveniently included in the final claims that accompany the present description.

Más concretamente, lo que la invención propone, como se ha apuntado anteriormente, es un dispositivo aplicable para su incorporación en instalaciones de paneles solares móviles que constituye un sistema de seguridad para impedir el giro inapropiado de las placas fotovoltaicas externas de un panel a una velocidad superior a la programada para impedir vibraciones o resonancias indeseadas provocadas en ellas por la acción del viento.More specifically, what the invention proposes, as noted above, is an applicable device for incorporation into mobile solar panel installations that constitutes a safety system to prevent inappropriate rotation of the external photovoltaic panels of a panel at a speed higher than programmed to prevent unwanted vibrations or resonances caused by wind action.

Para ello, el dispositivo de la invención está ideado para ir incorporado en los paneles extremos de las instalaciones fotovoltaicas, y se configura, esencialmente, a partir de un sistema de cables o cintas que parten de un mecanismo de enrollado controlado, que preferentemente está fijado en el pilar o poste de sustentación de dichos paneles, hacia cada uno de los extremos del panel final de la instalación. El mecanismo de enrollado cuenta con un eje que permite el movimiento controlado de los cables o cintas para que quede por debajo de una cierta velocidad, la programada que hace girar los paneles para orientarse correctamente al sol, pero impide movimientos bruscos, por encima de dicha velocidad programada, provocados por rachas de viento, bloqueando su movimiento tal como lo hacen los cinturones de seguridad de los vehículos automóviles.For this, the device of the invention is designed to be incorporated into the end panels of the photovoltaic installations, and is configured essentially from a system of cables or tapes that start from a controlled winding mechanism, which is preferably fixed on the support post or post of said panels, towards each end of the final panel of the installation. The winding mechanism has an axis that allows the controlled movement of the cables or tapes so that it is below a certain speed, the programmed one that rotates the panels to correctly orient itself to the sun, but prevents sudden movements, above said programmed speed, caused by gusts of wind, blocking its movement as do the seatbelts of motor vehicles.

En una forma de realización, el dispositivo comprende un único mecanismo de enrollado controlado con un único eje al que se enrollan en dirección contraria dos cables o cintas que van a parar a los respectivos extremos opuestos del panel. Cuando el panel gira una de las dos cintas se enrolla y la otra se desenrolla. En este caso el mecanismo incorpora dos elementos de bloqueo del giro (uno para cada lado) que impiden el giro del eje a una velocidad brusca.In one embodiment, the device comprises a single controlled winding mechanism with a single axis to which two cables or tapes are wound in the opposite direction to stop at the respective opposite ends of the panel. When the panel rotates one of the two tapes is wound and the other is unwound. In this case, the mechanism incorporates two elements for blocking the rotation (one for each side) that prevent the rotation of the shaft at an abrupt speed.

Y, en otra forma de realización, el dispositivo comprende dos mecanismos de enrollado controlado independientes, cada uno con un eje independiente, para cada uno de los dos cables o cintas.And, in another embodiment, the device comprises two independent controlled winding mechanisms, each with an independent axis, for each of the two cables or tapes.

En ambos casos, el dispositivo de freno de seguridad se fija al poste del panel por apriete, preferentemente, mediante atornillado de una brida con la que cuenta para tal fin, sin tener que hacer agujeros que debiliten el poste.In both cases, the safety brake device is fixed to the panel post by tightening, preferably, by screwing a flange with which it has for this purpose, without having to make holes that weaken the post.

El proceso de instalación es sencillo. Se unen los extremos de los cables o cintas a las placas de los respectivos extremos opuestos del panel y se fija el mecanismo de enrollado al poste central a la altura adecuada para que los cables o cintas estén en tensión.The installation process is simple. The ends of the cables or tapes are attached to the plates of the respective opposite ends of the panel and the winding mechanism is fixed to the central post at the appropriate height so that the cables or tapes are in tension.

Otra de las ventajas del dispositivo es que esta configuración permite ajustar el mismo dispositivo a diferentes instalaciones fotovoltaicas, aún cuando tengan diferentes anchos de las placas solares. Another advantage of the device is that this configuration allows the same device to be adjusted to different photovoltaic installations, even if they have different widths of the solar panels.

DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, se acompaña a la presente memoria descriptiva, como parte integrante de la misma, unos planos en que con carácter ilustrativo y no limitativo se ha representado lo siguiente:In order to complement the description that is being made and in order to help a better understanding of the characteristics of the invention, the present specification is attached, as an integral part thereof, some planes in which, with an illustrative and non-limiting nature, has represented the following:

Las figuras número 1 y 2.- Muestran sendas vistas, en perspectiva y en alzado lateral respectivamente, de un ejemplo de panel fotovoltaico en el que se ha incorporado un ejemplo del dispositivo objeto de la invención, apreciándose la disposición del mismo y sus partes principales;Figures 1 and 2 show two views, in perspective and in side elevation respectively, of an example of a photovoltaic panel in which an example of the device object of the invention has been incorporated, the arrangement thereof and its main parts being appreciated. ;

la figura número 3.- Muestra una vista en alzado frontal de un ejemplo del dispositivo objeto de la invención, en su variante de mecanismo de enrollado único para las dos cintas que comprende, el cual se ha representado en su posición de uso acoplado al pilar del panel;Figure number 3.- Shows a front elevational view of an example of the device object of the invention, in its single winding mechanism variant for the two belts it comprises, which has been represented in its use position coupled to the pillar of the panel;

la figura número 4.- Muestra una vista en perspectiva del ejemplo del dispositivo de la invención mostrado en la figura 3, en este caso representado sin acoplar al pilar del panel; yFigure 4 shows a perspective view of the example of the device of the invention shown in Figure 3, in this case represented without coupling to the panel pillar; Y

las figuras número 5 y 6.- Muestran sendas vistas, en alzado lateral y perspectiva respectivamente, de otro ejemplo del dispositivo de la invención, en este caso en su variante de doble mecanismo de enrollado para cada una de las dos cintas que comprende.Figures 5 and 6 show two views, in side elevation and perspective respectively, of another example of the device of the invention, in this case in its double winding mechanism variant for each of the two belts it comprises.

REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION

A la vista de las mencionadas figuras, y de acuerdo con la numeración adoptada, se puede observar en ellas sendos ejemplos de realización no limitativa del dispositivo de freno de seguridad para instalaciones fotovoltaicas preconizado, el cual comprende lo que se indica y describe en detalle a continuación.In view of the aforementioned figures, and according to the numbering adopted, you can see in them two examples of non-limiting embodiment of the safety brake device for photovoltaic installations recommended, which includes what is indicated and described in detail below.

Así, tal como se observa en dichas figuras, el dispositivo (1) en cuestión es aplicable para ir incorporado en una estructura de paneles (2) de una instalación fotovoltaica del tipo conformado por un conjunto de placas solares (3) sostenidas sobre un poste (4) de sustentación, cuenta con movimiento de seguimiento solar imprimido a dichas placas solares (3) por un motor (no representado) a través de una barra (5) de giro, y comprende, al menos, dos cables (6) o cintas que, por un extremo se encuentran vinculados a, al menos, un mecanismo (7) de enrollado controlado situado en un punto medio del panel (2), preferentemente fijado al poste (4) de sustentación del mismo, y que por el extremo opuesto se encuentran sujetos a los respectivos extremos opuestos de las placas (3) de los extremos del panel (2), estando dicho mecanismo (7) provisto de, al menos, un eje (8) de giro controlado con sistema de bloqueo, el cual permite el movimiento controlado de los cables (6) o cintas para que se enrollen y desenrollen al mismo cuando este se produce por debajo de una cierta velocidad, en concreto la programada para el seguimiento solar, pero que se bloquea cuanto el movimiento está por encima de dicha velocidad o se produce de manera brusca.Thus, as observed in said figures, the device (1) in question is applicable to be incorporated into a panel structure (2) of a photovoltaic installation of the type consisting of a set of solar panels (3) held on a pole (4) of support, has solar tracking movement printed to said solar panels (3) by a motor (not shown) through a rotating bar (5), and comprises at least two cables (6) or tapes that, at one end are linked to at least one controlled winding mechanism (7) located in a midpoint of the panel (2), preferably fixed to the support post (4) thereof, and that by the end opposite are subject to the respective opposite ends of the plates (3) of the ends of the panel (2), said mechanism (7) being provided with at least one axis (8) of rotation controlled with locking system, the which allows the controlled movement of the cables (6) or tapes so that s and wind and unwind when it occurs below a certain speed, specifically the one programmed for solar tracking, but that is blocked when the movement is above that speed or occurs abruptly.

En las figuras 3 y 4 se observa cómo, en una forma de realización, el dispositivo (1) comprende un único mecanismo (7) de enrollado controlado con un único eje (8) de giro controlado con sistema de bloqueo al que se enrollan, en dirección contraria, los dos cables (6) o cintas que van a parar a los respectivos extremos opuestos del panel (2), en el cual, ante el movimiento de las placas (3) movidas por la barra (5) para efectuar el movimiento de seguimiento solar, mientras que uno de los dos cables (6) o cintas se enrolla el otro cable (6) o cinta se desenrolla. En este caso el eje (8) del mecanismo (7) incorpora dos elementos de bloqueo del giro, uno para cada sentido de giro, que impiden el giro del eje (8) a una velocidad brusca.In figures 3 and 4 it is observed how, in one embodiment, the device (1) comprises a single controlled winding mechanism (7) with a single controlled rotation shaft (8) with locking system to which they are wound, in the opposite direction, the two cables (6) or tapes that will stop at the respective opposite ends of the panel (2), in which, before the movement of the plates (3) moved by the bar (5) to effect the solar tracking movement while one of the two cables (6) or tapes are wound the other cable (6) or tape is unwound. In this case, the axis (8) of the mechanism (7) incorporates two elements for blocking the rotation, one for each direction of rotation, which prevents the rotation of the axis (8) at an abrupt speed.

Y, en las figuras 5 y 6 se observa cómo, en otra forma de realización, el dispositivo (1) comprende dos mecanismos (7) de enrollado controlado independientes, cada uno con un eje (8) de giro controlado con sistema de bloqueo independiente, para cada uno de los dos cables (6) o cintas.And, in Figures 5 and 6 it is observed how, in another embodiment, the device (1) comprises two independent controlled winding mechanisms (7), each with a controlled rotation axis (8) with independent locking system , for each of the two cables (6) or tapes.

En cualquier caso, el mecanismo o mecanismos (7) del dispositivo (1) se fija al poste (4) del panel (2) por apriete, preferentemente, mediante atornillado de una brida (9) con la que cuenta para tal fin.In any case, the mechanism (7) of the device (1) is fixed to the post (4) of the panel (2) by tightening, preferably, by screwing a flange (9) with which it has for this purpose.

Descrita suficientemente la naturaleza de la presente invención, así como la manera de ponerla en práctica, no se considera necesario hacer más extensa su explicación para que cualquier experto en la materia comprenda su alcance y las ventajas que de ella se derivan.Describing sufficiently the nature of the present invention, as well as the way of putting it into practice, it is not considered necessary to extend its explanation so that any person skilled in the art understands its scope and the advantages that derive from it.

. .

Claims (5)

r e i v i n d i c a c i o n e s claims 1. - Dispositivo de freno de seguridad para instalaciones fotovoltaicas, en particular aplicable para ir incorporado en una estructura de paneles (2) del tipo conformado por placas solares (3) que, sostenidas sobre un poste (4) de sustentación, cuentan con movimiento de seguimiento solar, está caracterizado por comprender, al menos, un cable (6) o cinta que, por un extremo se encuentra vinculados a, al menos, un mecanismo (7) de enrollado controlado situado en un punto medio del panel (2), y que por el extremo opuesto se encuentra sujeto a un extremo de la placa (3) de los extremos del panel (2); y donde dicho mecanismo (7) está provisto de, al menos, un eje (8) de giro controlado con sistema de bloqueo, el cual permite el movimiento controlado del cable (6) o cinta para que se enrolle y desenrolle al mismo cuando el movimiento se produce por debajo de una cierta velocidad, en concreto la programada para el seguimiento solar, pero que se bloquea cuanto el movimiento está por encima de dicha velocidad o se produce de manera brusca.1. - Safety brake device for photovoltaic installations, in particular applicable to be incorporated in a structure of panels (2) of the type formed by solar panels (3) that, supported on a support post (4), have movement solar tracking, is characterized by comprising at least one cable (6) or tape that, at one end is linked to at least one controlled winding mechanism (7) located in a midpoint of the panel (2) , and that at the opposite end is attached to one end of the plate (3) of the ends of the panel (2); and where said mechanism (7) is provided with at least one controlled rotation shaft (8) with locking system, which allows the controlled movement of the cable (6) or tape so that it is wound and unwound thereon when the movement occurs below a certain speed, specifically that programmed for solar tracking, but that is blocked when the movement is above that speed or occurs abruptly. 2. - Dispositivo de freno de seguridad para instalaciones fotovoltaicas, según la reivindicación 1, caracterizado por comprender dos cables (6) o cintas enrollados a un único mecanismo (7) de enrollado controlado con un único eje (8) de giro controlado con sistema de bloqueo al que se enrollan, en dirección contraria, los dos cables (6) o cintas que van a parar a los respectivos extremos opuestos del panel (2), en el cual, ante el movimiento de las placas (3) para efectuar el movimiento de seguimiento solar, mientras que uno de los dos cables (6) o cintas se enrolla el otro cable (6) o cinta se desenrolla y el eje (8) del mecanismo (7) incorpora dos elementos de bloqueo del giro, uno para cada sentido de giro, que impiden el giro del eje (8) a una velocidad brusca.2. - Safety brake device for photovoltaic systems, according to claim 1, characterized in that it comprises two cables (6) or tapes wound to a single controlled winding mechanism (7) with a single axis (8) of controlled rotation with system of blocking to which the two cables (6) or tapes that are going to stop at the respective opposite ends of the panel (2) are wound in the opposite direction, in which, before the movement of the plates (3) to effect the solar tracking movement, while one of the two cables (6) or tapes is wound the other cable (6) or tape is unwound and the shaft (8) of the mechanism (7) incorporates two elements of rotation lock, one for each direction of rotation, which prevent the rotation of the shaft (8) at an abrupt speed. 3. - Dispositivo de freno de seguridad para instalaciones fotovoltaicas, según la reivindicación 1, caracterizado por comprender comprender dos cables (6) o cintas enrollados a dos mecanismos (7) de enrollado controlado independientes, cada uno con un eje (8) de giro controlado con sistema de bloqueo independiente, para cada uno de los dos cables (6) o cintas.3. - Safety brake device for photovoltaic installations, according to claim 1, characterized in that it comprises comprising two cables (6) or tapes wound to two independent controlled winding mechanisms (7), each with a controlled rotation axis (8) with independent locking system, for each of the two cables (6) or tapes. 4. - Dispositivo de freno de seguridad para instalaciones fotovoltaicas, según cualquiera de las reivindicaciones 1 a 3, caracterizado porque el mecanismo o mecanismos (7) de enrollado controlado se fijan al poste (4) del panel (2).4. - Safety brake device for photovoltaic installations, according to any of claims 1 to 3, characterized in that the controlled winding mechanism (7) is fixed to the pole (4) of the panel (2). 5. - Dispositivo de freno de seguridad para instalaciones fotovoltaicas, según la reivindicación 4, caracterizado porque el mecanismo o mecanismos (7) de enrollado controlado se fijan al poste (4) del panel (2) por apriete mediante atornillado de una brida (9) con la que cuenta para tal fin. 5. - Safety brake device for photovoltaic systems, according to claim 4, characterized in that the controlled winding mechanism (7) is fixed to the pole (4) of the panel (2) by tightening by screwing a flange (9 ) with which you have for this purpose.
ES201931320U 2019-07-31 2019-07-31 SAFETY BRAKE DEVICE FOR PHOTOVOLTAIC INSTALLATIONS Active ES1236214Y (en)

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ES201931320U ES1236214Y (en) 2019-07-31 2019-07-31 SAFETY BRAKE DEVICE FOR PHOTOVOLTAIC INSTALLATIONS
PCT/ES2020/070473 WO2021019115A1 (en) 2019-07-31 2020-07-21 Safety brake device for photovoltaic installations

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ES201931320U ES1236214Y (en) 2019-07-31 2019-07-31 SAFETY BRAKE DEVICE FOR PHOTOVOLTAIC INSTALLATIONS

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ES1236214Y ES1236214Y (en) 2020-01-09

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