ES1063863U - Device for closing valves for spoons of excavating machines (Machine-translation by Google Translate, not legally binding) - Google Patents

Device for closing valves for spoons of excavating machines (Machine-translation by Google Translate, not legally binding)

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Publication number
ES1063863U
ES1063863U ES200602105U ES200602105U ES1063863U ES 1063863 U ES1063863 U ES 1063863U ES 200602105 U ES200602105 U ES 200602105U ES 200602105 U ES200602105 U ES 200602105U ES 1063863 U ES1063863 U ES 1063863U
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Spain
Prior art keywords
base body
pulleys
bucket
car
cable
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Granted
Application number
ES200602105U
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Spanish (es)
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ES1063863Y (en
Inventor
David Gascon Rey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Modelco S L
MODELCO SL
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Modelco S L
MODELCO SL
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Publication date
Application filed by Modelco S L, MODELCO SL filed Critical Modelco S L
Priority to ES200602105U priority Critical patent/ES1063863Y/en
Publication of ES1063863U publication Critical patent/ES1063863U/en
Application granted granted Critical
Publication of ES1063863Y publication Critical patent/ES1063863Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

Valve closing device for buckets of excavating machines, specifically for spoons in which a base body is established whose lower extremity joins the valves of the spoon itself, actuable between the limit situations of opening and closing through of rods connecting said leaflets with a vertically movable carriage in the bosom of the base body, which receives the movement of the excavating machine, characterized in that the rope from which the spoon is suspended undergoes a plurality of inflections, with a change of direction, through a plurality of pulleys properly fixed to the car, to finally be fixed to the base body of the bucket, in the middle area of the upper crosspiece of said body. (Machine-translation by Google Translate, not legally binding)

Description

Dispositivo de cierre de valvas para cucharas de máquinas excavadoras.Valve closing device for spoons excavating machines

Objeto de la invenciónObject of the invention

La presente invención se refiere a un nuevo dispositivo de cierre para las valvas de las cucharas que participan en máquinas excavadoras, concretamente en máquinas de las utilizadas para la construcción de muros-pantalla, pilotes rectangulares y similares.The present invention relates to a new closing device for the leaflets of the spoons that they participate in excavating machines, specifically in those used for the construction of screen walls, rectangular piles and Similar.

El objeto de la invención es conseguir un dispositivo multiplicador de la fuerza de apertura de las valvas, con la misma potencia aplicada.The object of the invention is to achieve a multiplier device of the opening force of the leaflets, with the same power applied.

Es también objeto de invención minimizar sustancialmente la fatiga de los cables de apertura de las valvas, alargando la vida útil de los mismos y reduciendo el riesgo de rotura de los mismos.It is also the object of the invention to minimize substantially fatigue of the opening cables of the leaflets, extending their useful life and reducing the risk of breakage of them.

Antecedentes de la invenciónBackground of the invention

Para trabajos del tipo de los anteriormente citados, tales como la obtención de muros-pantalla, pilotes de sección rectangular y otros, se utilizan máquinas excavadoras provistas de una cuchara estructurada mediante un cuerpo base suspendido de la máquina mediante cables o por cualquier otro medio apropiado, cuerpo base al que se unen articulada e inferiormente dos valvas simétricas, constitutivas de la cuchara propiamente dicha, susceptibles de abrirse y cerrarse con la colaboración de un juego de bielas que se relacionan articuladamente tanto con las valvas como con un carro verticalmente desplazable en el seno del cuerpo base, de manera que cuando dicho carro adopta una posición extrema las valvas se abren, mientras que cuando adopta la posición contraria dichas valvas se cierran.For works of the type above cited, such as obtaining screen walls, rectangular section piles and others, machines are used excavators equipped with a structured spoon using a body suspended base of the machine by cables or by any other appropriate medium, base body to which they are articulated and inferiorly two symmetrical leaflets, constituting the spoon proper, capable of opening and closing with the collaboration of a connecting rod set articulated both with the leaflets and with a car vertically movable within the base body, so that when said car takes an extreme position the leaflets open, while when adopting the opposite position these leaflets will they close.

Máquinas excavadoras de este tipo aparecen como por ejemplo, en la patente de invención española 2.160.081, en la patente de invención 2.650.208 o en la patente de invención 2.235.632.Excavating machines of this type appear as for example, in the Spanish invention patent 2,160,081, in the invention patent 2.650.208 or in the invention patent 2,235,632.

En este tipo de máquinas el accionamiento de las valvas de la cucharas se lleva acabo bien mediante una barra de transmisión, conocida en el argot como "kelly", o bien mediante un cable que se fija por su extremidad inferior al carro móvil de la cuchara.In this type of machines the drive of the Spoons of the spoons are carried out well by a bar transmission, known in slang as "kelly", or by a cable that is fixed at its lower end to the car spoon mobile.

En este ultimo caso el citado cable de apertura tracciona directamente del carro en sentido ascendente, provocando el desplazamiento del mismo y la apertura de la cuchara, de manera que la fuerza de apertura ejercida sobre las valvas es la misma que se ejerce sobre el carro y a su vez es coincidente con el peso de la cuchara. Esto supone que la potencia aplicada por la máquina para el cierre de la cuchara deba ser como mínimo coincidente con el peso de la misma, y que el cable de transmisión sea a su vez adecuado para soportar tales esfuerzos, esfuerzos que eventualmente se ven notablemente incrementados en la práctica, por ejemplo cuando los materiales que llenan las valvas son pegajosos o cuando entre dichas valvas se alojan rocas duras que, comprimidas entre ellas, requieren grandes esfuerzos para ser expulsadas.In the latter case the said opening cable pulls directly from the car upwards, causing the displacement of the same and the opening of the spoon, so that the opening force exerted on the leaflets is the same as it is exerted on the car and in turn is coincident with the weight of the spoon. This means that the power applied by the machine for the closing of the spoon it must be at least coincident with the weight of it, and that the power cable is in turn adequate to withstand such efforts, efforts that eventually they are noticeably increased in practice, for example when the materials that fill the leaflets are sticky or when between these leaflets are hard rocks that, compressed between they require great efforts to be expelled.

Descripción de la invenciónDescription of the invention

El dispositivo de apertura que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, de manera que para las maniobras de cierre de una determinada cuchara se hace preciso una menor potencia aplicada o, lo que es lo mismo, para una misma potencia aplicada se consigue un notable incremento de la fuerza de apertura ejercida sobre las valvas, a la vez que se consigue también, como ya se a apuntado con anterioridad, una menor fatiga en los cables que traccionando del carro y una mayor o mas larga vida útil de los mismos, minimizando el riesgo de rotura, con las graves consecuencias que de ella se derivan y que a menudo pueden incluso acabar con la perdida completa de la cuchara dentro de la excavación a grandes profundidades.The opening device that the invention proposes to solve the problem fully satisfactorily previously exposed, so that for closing maneuvers from a certain spoon a lower power is required applied or, what is the same, for the same applied power is achieves a notable increase in the opening force exerted on the leaflets, at the same time that it is also achieved, as already noted above, less fatigue in the cables that pulling the car and a longer or longer life of the themselves, minimizing the risk of breakage, with the serious consequences that derive from it and that can often even end the complete loss of the spoon inside the digging at great depths.

Para ello y de forma mas concreta el dispositivo que se preconiza, partiendo de la estructuración básica de una cuchara convencional como la anteriormente descrita, centra sus características en el hecho de que el cable de apertura y elevación de la cuchara no se fija al carro de la misma, sino que lo hace a su cuerpo base, previo paso por un juego de poleas, preferentemente en número de seis, adecuadamente distribuidas para determinar en la trayectoria del cable múltiples tramos ascendentes y descendentes, que potencian considerablemente el citado efecto multiplicador, consiguiéndose que la fuerza de elevación sobre el carro sea por ejemplo cinco veces superior al peso de la cuchara, ya que el desplazamiento longitudinal del cable es cinco veces superior al desplazamiento vertical que transmite al carro, lo que supone un efecto similar al de un polipasto.For this and more specifically the device which is recommended, based on the basic structuring of a conventional spoon like the one described above, centers its features in the fact that the opening and lifting cable of the spoon is not fixed to the car of the same, but it does it to its base body, after passing through a set of pulleys, preferably in number of six, properly distributed to determine in the cable path multiple ascending and descending sections, which greatly enhance the aforementioned multiplier effect, getting that the lifting force on the car is by example five times higher than the weight of the spoon, since the longitudinal displacement of the cable is five times higher than vertical displacement that transmits to the car, which means a effect similar to that of a hoist.

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 del invento, de acuerdo con un ejemplo de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, una hoja única de planos en la que con carácter ilustrativo y no limitativo y en su única figura, se ha representado, esquemáticamente y en alzado lateral, una cuchara para máquinas excavadoras dotada del dispositivo de cierre de valvas que constituye el objeto de la presente invención.To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to an example of practical realization of it, is accompanied as an integral part of said description, a single sheet of plans in which with illustrative and non-limiting nature and in its only figure, it has represented, schematically and in side elevation, a spoon for  excavating machines equipped with the valve closing device that  It constitutes the object of the present invention.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de las figuras reseñadas puede observarse como una cuchara dotada del dispositivo de cierre que se preconiza está constituida, corno cualquier cuchara convencional de este tipo, a partir de un cuerpo base (1) que a través de su extremidad inferior y mediante respectivas articulaciones (2), recibe a una pareja de valvas (3-3') constitutivas de la cuchara propiamente dicha, capaz de adoptar la posición de apertura mostrada en la figura, o una situación de cierre accionadas mediante bielas (4-4') que relacionan las valvas (3-3') con un carro (5), desplazable verticalmente sobre el cuerpo base (1), uniéndose dichas bielas (4-4') articuladamente tanto a las valvas (3-3') en los puntos de articulación (6) como al carro (5) en los puntos de articulación (7), quedando este conjunto suspendido de un cable (8) que sirve tanto para el desplazamiento ascendente/descendente del carro (5), y consecuentemente para la apertura y cierre de las valvas (3), como para la elevación y descenso de la cuchara en su conjunto.In view of the figures outlined you can be observed as a spoon equipped with the closing device that preconiza is constituted, as any conventional spoon of this type, from a base body (1) that through its lower limb and through respective joints (2), receive a pair of constituent leaflets (3-3 ') of the spoon itself, capable of adopting the position of opening shown in the figure, or a closing situation actuated by connecting rods (4-4 ') that relate the leaflets (3-3 ') with a carriage (5), movable vertically on the base body (1), said connecting rods joining (4-4 ') articulated both to the leaflets (3-3 ') at the points of articulation (6) as at carriage (5) at the articulation points (7), this set remaining suspended from a cable (8) that serves both for displacement ascending / descending of the car (5), and consequently for the opening and closing of the leaflets (3), as for the elevation and Drop the spoon as a whole.

Pues bien, de acuerdo ya con la invención el cable de suspensión (8), con una trayectoria sensiblemente ubicada en correspondencia con el eje vertical y medio de la cuchara en su conjunto, se dirige a una polea inferior (9) situada en la extremidad inferior del cuerpo base (1), donde sufre una inflexión para ascender de nuevo hacia una segunda polea (10) situada sobre el carro (5), desde la que desciende nuevamente hacia una tercera polea (11) situada bajo la polea (9) anteriormente citada, desde ésta polea (11) pasa a una cuarta polea (12) situada lateral y simétricamente con respecto a la citada polea (11), (tal como se observa en el dibujo 2), desde esta polea (12) asciende hacia una segunda polea (13) situada sobre el carro (5), desde esta polea (13) desciende nuevamente hasta el nivel inferior del carro para alcanzar una sexta polea (14) y desde esta última asciende finalmente y de nuevo hasta el carro (5) donde el cable (8) se fija al mismo con la colaboración de un amarre de cuña (15) o por cualquier otro medio apropiado.Well, according to the invention, the suspension cable (8), with a trajectory substantially located in correspondence with the vertical and middle axis of the spoon in its together, it is directed to a lower pulley (9) located in the lower extremity of the base body (1), where it undergoes an inflection to ascend again to a second pulley (10) located on the car (5), from which it descends again to a third pulley (11) located under the pulley (9) mentioned above, from this pulley (11) passes to a fourth pulley (12) located laterally and symmetrically with respect to said pulley (11), (as observe in drawing 2), from this pulley (12) it ascends towards a second pulley (13) located on the carriage (5), from this pulley (13) descend again to the lower level of the car to reach a sixth pulley (14) and from the latter ascends finally and again to the carriage (5) where the cable (8) is fixed at the same with the collaboration of a wedge mooring (15) or by any other appropriate means.

En este caso los tres tramos descendentes del cable (8), en conjunción con los otros tres tramos ascendentes del mismo, originan un efecto multiplicador que, como anteriormente se ha dicho, hace que la fuerza de cierre de la cuchara sea cinco veces el peso de la misma, como ya se ha dicho con anterioridad.In this case the three descending sections of the cable (8), in conjunction with the other three ascending sections of the same, originate a multiplier effect that, as previously said, makes the closing force of the spoon five times the weight of it, as already said with anteriority.

Todas las citadas poleas (9) a (14) son iguales e intercambiables y están situadas en el mismo plano, en posiciones simétrica a ambos lados del cuerpo base (1), por lo que no se producen esfuerzos radiales sobre dichas poleas y la zona de entrada del cable (8) puede producirse exactamente en el centro geométrico del marco superior del cuerpo base (1), siendo innecesario el uso de rodillos deflectores para desviación del cable, lo que además facilita la labor de fabricar cucharas de reducido espesor para realizar excavaciones de reducida anchura.All the mentioned pulleys (9) to (14) are equal and interchangeable and are located in the same plane, in positions symmetrical on both sides of the base body (1), so it is not produce radial stresses on said pulleys and the area of cable entry (8) can occur exactly in the center geometric of the upper frame of the base body (1), being unnecessary the use of deflector rollers to deflect the cable, which also facilitates the work of manufacturing spoons reduced thickness for excavations of reduced width.

Claims (2)

1. Dispositivo de cierre de valvas para cucharas de máquinas excavadoras, concretamente para cucharas en las que se establece un cuerpo base a cuya extremidad inferior se unen articuladamente las valvas de la cuchara propiamente dicha, accionables entre las situaciones límite de apertura y cierre a través de bielas que relacionan dichas valvas con un carro verticalmente desplazable en el seno del cuerpo base, que es el que recibe el movimiento de la máquina excavadora, caracterizado porque el cable del que queda suspendida la cuchara sufre una pluralidad de inflexiones, con cambio de dirección, a través de una pluralidad de poleas debidamente fijadas al carro, para finalmente fijarse al cuerpo base de la cuchara, en la zona media del travesaño superior de dicho cuerpo.1. Valve closing device for excavator buckets, specifically for spoons in which a base body is established whose lower end joins the buckets of the bucket properly articulated, operable between the opening and closing limit situations through of connecting rods that relate said leaflets with a vertically movable carriage within the base body, which is the one that receives the movement of the excavator, characterized in that the cable from which the bucket is suspended suffers a plurality of inflections, with change of direction , through a plurality of pulleys duly fixed to the carriage, to finally be fixed to the base body of the bucket, in the middle area of the upper cross member of said body. 2. Dispositivo de cierre de valvas para cucharas de máquinas excavadoras, según reivindicación 1ª, caracterizado porque en la cuchara se establecen seis poleas para guiado del cable, dos de ellas sobre el carro y otras cuatro sobre la extremidad inferior del cuerpo base, de manera que el cable desciende verticalmente en correspondencia con el imaginario eje de la cuchara para alcanzar una de las poleas inferiores, sobre la que sufre una inflexión determinante de un tramo ascendente que alcanza una de las poleas del carro, donde el cable cambia su trayectoria que pasa a ser descendente para alcanzar otra de las poleas inferiores, desde la que pasa a la del lado contrario, para ascender de nuevo hacia la segunda polea situada en el carro, de la que a su vez desciende hacia otra de las poleas inferiores, para finalmente ascender de nuevo y fijarse finalmente por su extremidad libre al carro.2. Valve closure device for excavator machine buckets, according to claim 1, characterized in that six pulleys for cable guidance are established in the bucket, two of them on the carriage and four on the lower end of the base body, so that the cable descends vertically in correspondence with the imaginary axis of the bucket to reach one of the lower pulleys, on which it suffers a decisive inflection of an ascending section that reaches one of the pulleys of the car, where the cable changes its passing trajectory to be descending to reach another of the lower pulleys, from which it passes to the one on the opposite side, to ascend again towards the second pulley located in the car, from which in turn it descends towards another of the lower pulleys, to finally ascend again and finally set your free end to the car.
ES200602105U 2006-09-26 2006-09-26 VALVE CLOSURE DEVICE FOR EXCAVATING MACHINE SPOONS Expired - Fee Related ES1063863Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES200602105U ES1063863Y (en) 2006-09-26 2006-09-26 VALVE CLOSURE DEVICE FOR EXCAVATING MACHINE SPOONS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES200602105U ES1063863Y (en) 2006-09-26 2006-09-26 VALVE CLOSURE DEVICE FOR EXCAVATING MACHINE SPOONS

Publications (2)

Publication Number Publication Date
ES1063863U true ES1063863U (en) 2006-12-16
ES1063863Y ES1063863Y (en) 2007-03-16

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ES200602105U Expired - Fee Related ES1063863Y (en) 2006-09-26 2006-09-26 VALVE CLOSURE DEVICE FOR EXCAVATING MACHINE SPOONS

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