ES2472117B1

ES2472117B1 - Clamp device and hoops for handling loads on blankets

Info

Publication number: ES2472117B1
Application number: ES201230748A
Authority: ES
Inventors: Julián BERZOSA RODRÍGUEZ; Óscar PARRA COCERA; Pedro José MORA PICÓN
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-17
Filing date: 2012-05-17
Publication date: 2015-04-13
Anticipated expiration: 2032-05-17
Also published as: ES2472117A1

Abstract

Dispositivo de pinza y aros para manipular cargas sobre mantillas.#La presente invención tiene por objeto permitir manipular cargas sobre lienzos denominados mantillas, mediante una grúa o pluma, sin que para ello deba de haber una persona enganchando dicha mantilla a la grúa en el momento de la carga.#El dispositivo presenta una pinza que unida a la pluma o grúa, puede mediante accionamiento hidráulico, sujetar dos aros previamente posicionados y unidos a la mantilla por un operario, pudiendo de esta forma desplazar, elevar, vaciar la carga y recuperar la mantilla.#El dispositivo presenta:#- Un soporte (2) que unido al brazo de una grúa o pluma, soporta un chasis (1), que a su vez soporta una barra (3), un brazo (5) y un cilindro hidráulico (6).#- Dos aros (9).#Una de las aplicaciones más importantes se centra en el sector agrícola, relativo a la recolección de la aceituna.Clamp device and hoops for handling loads on blankets. # The present invention aims to allow handling loads on canvases called blankets, by means of a crane or boom, without having to have a person hooking said blanket to the crane at the time. of the load. # The device has a clamp that, together with the boom or crane, can be hydraulically operated, holding two hoops previously positioned and attached to the blanket by an operator, thus being able to move, lift, empty the load and recover the blanket. # The device has: # - A support (2) that attached to the arm of a crane or boom, supports a chassis (1), which in turn supports a bar (3), an arm (5) and a Hydraulic cylinder (6). # - Two rings (9). # One of the most important applications focuses on the agricultural sector, related to olive harvesting.

Description

DISPOSITIVO DE PINZA Y AROS PARA MANIPULAR CARGAS SOBRE MANTILLAS. Sector de la técnica 5 La invención se encuadra en el sector técnico agrícola y con especial mención al aplicable a la recolección de la aceituna, aunque entendemos que la invención se puede extender a todos aquellos sectores en los cuales se puedan usar mantillas para la manipulación de cargas, entendiendo como mantilla cualquier lienzo o tela sobre la que se deposita una carga. 10 Estado de la Técnica En la actualidad uno de los métodos de recolección de la aceituna, consiste en derribar el fruto cayendo este sobre unos lienzos de gran tamaño (denominados comúnmente como 15 mantones), que previamente han sido extendidos sobre el suelo. Toda vez que la carga de aceituna sobre los mantones se entiende como suficiente, estos se vacían sobre unos lienzos más pequeños (mantillas en lo sucesivo), dichas mantillas que normalmente son de área cuadrada o rectangular, contienen cuatro extremos o vértices provistos de una anilla cada uno. 20 Para poder elevar dicha mantilla del suelo junto con su contenido, a objeto de vaciarla sobre un remolque, es necesario que un operario sobre el suelo agarre y junte las anillas dos a dos para engancharlas al extremo de una grúa (pluma en lo sucesivo) instalada sobre un tractor o remolque, dicha pluma es también manipulada por el operario que conduce el tractor, que a su vez desplaza el remolque. 25 En esta situación el operario que esta sobre el suelo debe de estar muy próximo a la pluma mientras esta es manipulada, y a su vez muy cerca del tractor y remolque, pues la operación de carga se realiza a corta distancia entre la mantilla y el vehículo. A esto anterior hemos de añadir que el vehículo debe de estar realizando desplazamientos cortos que le posibiliten tener a su alcance cada mantilla. 30 De la explicación anterior se deduce que el operario que esta sobre el suelo, no está exento de sufrir accidentes en el proceso de carga, y que el operario que manipula la pluma, tractor y remolque está sometido a estrés por dicha situación. CLAMP AND RINGS DEVICE FOR HANDLING LOADS ON MANTILLAS. Technical sector 5 The invention falls within the agricultural technical sector and with special mention to that applicable to olive harvesting, although we understand that the invention can be extended to all those sectors in which blankets can be used for handling loads, understood as blanket any canvas or fabric on which a load is deposited. 10 State of the Art Currently, one of the methods of harvesting the olive consists in demolishing the fruit by dropping it on large canvases (commonly referred to as 15 shawls), which have previously been spread on the ground. Since the olive load on the shawls is understood as sufficient, they are emptied over smaller canvases (hereinafter), said blankets that are normally square or rectangular, contain four ends or vertices provided with a ring each. 20 In order to lift said blanket from the ground along with its contents, in order to empty it onto a trailer, it is necessary for an operator on the ground to grab and join the rings two by two to hook them to the end of a crane (hereinafter boom) installed on a tractor or trailer, said boom is also manipulated by the operator driving the tractor, which in turn displaces the trailer. 25 In this situation the operator who is on the ground must be very close to the boom while it is being handled, and at the same time very close to the tractor and trailer, because the loading operation is carried out at a short distance between the blanket and the vehicle . To this we must add that the vehicle must be making short trips that allow you to have every blanket within reach. 30 It follows from the previous explanation that the operator who is on the ground is not exempt from accidents in the loading process, and that the operator who manipulates the boom, tractor and trailer is under stress due to said situation.

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Descripción de la invención La idea o concepto de esta invención, consiste en dejar los vértices de la mantilla unidos con antelación al paso del vehículo, con la particularidad de que los elementos que median en la unión y que denominaremos como aros, tienen una geometría que posicionada de una 5 forma determinada, permiten a un elemento mecánico que denominaremos como pinza, agarrarlos sin intervención humana directa, para de esta forma transportar la carga y vaciarla. La solución que se aporta respecto del operario que esta sobre el suelo, consiste en la utilización de dos aros que pueden estar provistos de asas, a los que debe sujetar los 10 vértices libres de la mantilla, mediante elementos de enlace tales como: ganchos, mosquetones, cuerdas, etc., pudiendo existir básicamente dos posibilidades: A) Si la mantilla contiene en todos sus vértices anillas, el operario debe enganchar dos anillas a cada aro, quedando este entre ambas. Los puntos del aro en el cual se conectan los elementos de enlace, son su cuerpo o las asas si las contiene. Normalmente las anillas que 15 se van a sujetar al aro están a un mismo lado de la mantilla. De forma habitual y por comodidad práctica una de las dos anillas que se engancha a uno de los aros, nunca se va a desmontar de este, lo que motiva que los elementos de enlace de esa anilla con el cuerpo del aro o su asa, puedan ser fijos o no desmontables. B) Si la mantilla ya cuenta en dos de sus vértices con un aro en cada uno de ellos y dos 20 ganchos o mosquetones, uno en cada vértice restante, el operario solo deberá enganchar los elementos de enlace antes mencionados, con el cuerpo del aro o su asa libre que se encuentre de un mismo lado. A veces entre elementos de unión y los vértices de la mantilla es necesario que medien tramos de cuerda, sirga o cadena, a objeto de que el operario no necesite realizar mucho 25 esfuerzo para realizar la unión. Hemos de tener en cuenta que en una mantilla cargada, el fruto se puede extender hasta sus límites, elevándose también en su parte central, por tanto conseguir manualmente que los vértices queden próximos sobre la parte central, puede ser en ocasiones difícil. Cada uno de los aros puede tener un saliente o espiga perpendicular a el y contenida en 30 su mismo plano. Su objetivo es mantener el aro en posición vertical respecto del suelo, toda vez que dicha espiga ha sido introducida perpendicularmente sobre la acumulación de fruto. Con la solución anterior ya no es necesario que el operario que esta sobre el suelo, acompañe al vehículo que carga, pues puede manipular la mantilla y los elementos antes 35 mencionados, con antelación al paso de dicho vehículo. Description of the invention The idea or concept of this invention is to leave the vertices of the blanket attached before the passage of the vehicle, with the particularity that the elements that mediate in the union and that we will call as rings, have a geometry that positioned in a certain way, they allow a mechanical element that we will call as a clamp, grab them without direct human intervention, in order to transport the cargo and empty it. The solution that is provided with respect to the operator who is on the ground, consists of the use of two hoops that can be provided with handles, to which the 10 free vertices of the blanket must be attached, by means of linkage elements such as: hooks, carabiners, ropes, etc., there may be basically two possibilities: A) If the blanket contains in all its vertices rings, the operator must hook two rings to each ring, leaving this between them. The points of the ring in which the connecting elements are connected, are its body or the handles if it contains them. Normally the rings that are to be attached to the ring are on the same side of the blanket. In a usual way and for practical convenience one of the two rings that hooks to one of the hoops, will never be removed from this, which motivates that the link elements of that ring with the body of the ring or its handle, can be fixed or not removable. B) If the blanket already has two of its vertices with a hoop in each of them and two 20 hooks or carabiners, one in each remaining vertex, the operator should only hook the aforementioned link elements, with the hoop body or its free handle that is on the same side. Sometimes between joining elements and the vertices of the blanket it is necessary that they measure sections of rope, rope or chain, so that the operator does not need to make much effort to make the union. We have to take into account that in a loaded blanket, the fruit can be extended to its limits, also rising in its central part, so manually getting the vertices to be close to the central part, it can sometimes be difficult. Each of the rings can have a projection or spike perpendicular to it and contained in its same plane. Its objective is to keep the ring in a vertical position with respect to the ground, since said spike has been introduced perpendicularly on the accumulation of fruit. With the previous solution, it is no longer necessary for the operator who is on the ground to accompany the loading vehicle, as he can manipulate the blanket and the aforementioned elements, in advance of the passage of said vehicle.

Respecto de la pluma que recoge para su carga las mantillas, esta invención ha dispuesto que en su extremo exista una pinza de accionamiento normalmente hidráulico. La pinza dispone de un lado fijo y de un lado móvil o articulado, el objetivo es que el operario que manipula la grúa pueda mediante el accionamiento de un sistema hidráulico y/o mecánico abrir la pinza, e introducir la parte fija de esta por el interior de los dos aros, 5 para después cerrarla sujetando dichos aros de tal forma que se evita el desprendimiento de estos, pudiendo proceder a la elevación de la mantilla, a su vaciado y a su recuperación. Es muy importante que en la operación de descarga cuando el operario abra la pinza, la mantilla se vacíe, pero sin que esta caiga al interior del remolque, hecho que ocasionaría dificultad en su recuperación. A tal efecto la parte móvil de la pinza lleva en su cara 10 inferior dos pivotes o dientes, y la parte fija tiene un resalto en su parte superior. Cuando la parte fija de la pinza se introduce por el interior de los aros, el primero en entrar debe de quedar situado por detrás del resalto, y el segundo por delante de este. Acto seguido la pinza se puede cerrar, bloqueando el desplazamiento hacia el exterior de los aros, quedando el diente mas interior sobre el resalto, y el diente mas exterior por delante 15 de este, apoyando sobre el cuerpo de la parte fija. De esta forma los aros quedan separados y situados por detrás de los dientes. Pudiendo elevar la pluma la carga hasta el punto de vaciado. En la operación de carga antes mencionada, y para mejorar el ángulo de entrada de la parte fija de la pinza en los aros, puede existir un ángulo predeterminado entre pluma y 20 pinza o bien se puede disponer de la posibilidad de corregir manualmente dicho ángulo, con anterioridad a la maniobra de carga. En la operación de vaciado la pinza se abre, y por efecto de la tensión que genera la mantilla, el primer aro sale de la pinza, permitiendo el vaciado de la carga. Sin embargo el aro que se encuentra por detrás del resalto no puede resbalar, solo cuando la pluma 25 desciende hacia el suelo puede el aro resbalar y soltarse, como consecuencia de la pendiente y del peso de la mantilla ya vacía. With respect to the pen that collects the blankets for loading, this invention has provided that at its end there is a normally hydraulic drive clamp. The clamp has a fixed side and a movable or articulated side, the objective is that the operator who manipulates the crane can by opening a hydraulic and / or mechanical system open the clamp, and introduce the fixed part of it by the inside of the two rings, 5 and then close it by holding said rings in such a way that the detachment of these is avoided, being able to proceed to the elevation of the blanket, its emptying and its recovery. It is very important that in the unloading operation when the operator opens the clamp, the blanket is emptied, but without it falling into the trailer, which would cause difficulty in its recovery. For this purpose, the movable part of the clamp has two pivots or teeth on its lower face, and the fixed part has a protrusion in its upper part. When the fixed part of the clamp is inserted inside the rings, the first one to enter must be located behind the shoulder, and the second one in front of it. Then the clamp can be closed, blocking the movement towards the outside of the rings, leaving the innermost tooth on the shoulder, and the outermost tooth in front of it, resting on the body of the fixed part. In this way the rings are separated and located behind the teeth. The boom can lift the load to the point of emptying. In the aforementioned loading operation, and to improve the angle of entry of the fixed part of the clamp into the rings, there may be a predetermined angle between boom and 20 clamp or the possibility of manually correcting said angle may be available, before loading maneuver. In the emptying operation the clamp is opened, and due to the tension generated by the blanket, the first ring leaves the clamp, allowing the load to be emptied. However, the ring behind the shoulder cannot slip, only when the pen 25 descends towards the ground can the ring slide and be released, as a result of the slope and the weight of the blanket already empty.

Descripción de las figuras La figura 1, muestra una de las posibles configuraciones de los elementos que conforman la pinza, así como uno de los montajes. La pinza tiene como soporte básico un chasis (1), que consistente en una o dos placas 5 paralelas (caso de la figura 1), cuyas caras principales contienen una serie de agujeros que sirven para introducir pasadores o tornillos, que dotarán de apoyo al resto de elementos, e incluso permitirán el cambio de posición de alguno de ellos. Ese es el caso del soporte (2), dicho soporte permite asir la pinza al extremo de la pluma, toda vez que su extremo libre sea introducido en el interior de la cañonera del brazo de la pluma, manteniéndose en esta 10 posición gracias a uno o dos tornillos o pasadores, que de lado a lado atraviesan la cañonera y el soporte (2). También es posible realizar adaptaciones en el extremo de la pluma para sujetar el soporte (2), e incluso soldarlo directamente al extremo del brazo, lo que motiva que no sean necesarios elementos de unión pasantes. En el extremo que une el soporte (2) al chasis (1), existen dos agujeros que permiten su fijación mediante elementos 15 de unión pasantes, con la particularidad de que el agujero que se encuentra mas exterior puede hacerse coincidir con cada uno de los agujeros previstos (tres en este caso) en el chasis (1), de esta forma se puede variar el ángulo que presenta el chasis (1) y resto de elementos que contiene, respecto del que tenga el soporte (2) con la pluma. En ocasiones los tres agujeros del chasis (1) pueden ser sustituidos por ranuras 20 curvadas, permitiéndose de esta forma una variación del ángulo entre el chasis (1) y el soporte (2) mas fina. La barra (3) es la parte fija de la pinza, que se introduce por el interior de los aros, cuando esta está abierta, en uno de sus extremos y parte superior se muestra el resalto (4), que bloquea o permite el deslizamiento del aro que entra en primer lugar. El otro extremo 25 de la barra (3) entra en el chasis y puede ser sujeto mediante elementos de unión pasantes (tal y como se indica en la figura 1), o simplemente mediante soldadura conformando una continuación fija del propio chasis (1). El brazo (5) es la parte móvil de la pinza, sobre la que actúa el cilindro hidráulico (6), como se puede apreciar en la figura 1, en la parte inferior sobresalen del brazo (5) los 30 dientes (7) y (8), que impedirán el desplazamiento de los aros en la operación de elevación. La figura 2 muestra el conjunto formado por el aro (9), las asas (10) y (11), así como la espiga (12), si bien el aro (9) puede no contener o prescindir de todos o algunos de los elementos (10), (11) y (12), que en la figura aparecen. Description of the figures Figure 1 shows one of the possible configurations of the elements that make up the clamp, as well as one of the assemblies. The clamp has as a basic support a chassis (1), which consists of one or two parallel plates 5 (case of figure 1), whose main faces contain a series of holes that serve to introduce pins or screws, which will provide support to the other elements, and even allow the change of position of any of them. That is the case of the support (2), said support allows to grab the clamp to the end of the boom, since its free end is introduced inside the gunboat of the boom arm, keeping in this position thanks to one or two screws or pins, which go from side to side through the gunboat and the support (2). It is also possible to make adaptations at the end of the boom to hold the support (2), and even weld it directly to the end of the arm, which motivates that no passing connecting elements are necessary. At the end that joins the support (2) to the chassis (1), there are two holes that allow its fixation by means of through connecting elements 15, with the particularity that the hole that is more outer can be made to coincide with each of the holes provided (three in this case) in the chassis (1), in this way you can vary the angle of the chassis (1) and other elements it contains, with respect to the support (2) with the boom. Sometimes the three holes of the chassis (1) can be replaced by curved grooves 20, thus allowing a variation of the angle between the chassis (1) and the thinner support (2). The bar (3) is the fixed part of the clamp, which is introduced through the inside of the rings, when it is open, at one of its ends and upper part the shoulder (4) is shown, which blocks or allows sliding of the hoop that comes first. The other end 25 of the bar (3) enters the chassis and can be held by means of through connecting elements (as indicated in Figure 1), or simply by welding forming a fixed continuation of the chassis itself (1). The arm (5) is the movable part of the caliper, on which the hydraulic cylinder (6) acts, as can be seen in Figure 1, in the lower part of the arm (5) the 30 teeth (7) and (8), which will prevent the movement of the hoops in the lifting operation. Figure 2 shows the assembly formed by the ring (9), the handles (10) and (11), as well as the pin (12), although the ring (9) may not contain or dispense with all or some of the elements (10), (11) and (12), which appear in the figure.

Modo de realización Toda vez que el elemento que hemos denominado como mantilla, está cargado, el operario deberá coger dos aros (9) (figura 2), que podrán previamente estar unidos a la mantilla o no, y enganchar en cada cuerpo de aro (9), o asas (10) y/u (11) (si dispone de 5 ellas), un elemento de enlace (gancho, mosquetón, etc.), el cual puede sujetarse de forma directa a la mantilla, a una anilla del vértice de la mantilla, o a una combinación en la que medie una cuerda, sirga, cadena, etc. Los aros deberán posicionarse paralelos entre si y a ser posible perpendiculares al suelo, siendo anclados en esta posición mediante la introducción de sus espigas (11) (si las contienen) sobre la carga de la mantilla. La 10 orientación de los aros debe ser tal que al paso del tractor se facilite la maniobra de carga. Cuando la pluma que contiene en su extremo la pinza (figura1), maniobra para cargar la mantilla, es el momento de comprobar si el ángulo entre la pinza y el suelo, es el adecuado para que pueda entrar por el interior de los aros, (siempre y cuando el dispositivo permita dicha opción), dicho ángulo se puede corregir modificando la posición que tiene el chasis 15 (1), respecto del soporte (2), sin más que sacar un bulón y girar el chasis (1) hasta hacer coincidir otro agujero (o posición sobre la ranura), para después volver a introducir el anterior bulón o elemento de fijación, la forma de bloquear el bulón para que no se desplace de su posición accidentalmente, puede ser mediante pasadores, tuercas, grupillas, etc. 20 El operario de la pluma deberá abrir la pinza mediante el accionamiento del cilindro hidráulico (6), e introducir la barra (3) por el interior de los dos aros, hasta que el primero de los aros en entrar quede por detrás del resalto, y el segundo por detrás del primer diente (7). A continuación el operario cerrara la pinza mediante el actuador (6) y elevara la mantilla hasta la altura necesaria para descargarla. 25 La operación de descarga consiste en abrir la pinza mediante el actuador (6), hasta que se desprende el aro mas externo, que sujetaba dos de los extremos de la mantilla, lo que provoca el vaciado. A posteriori se acciona la pluma hasta que el ángulo que tiene la pinza respecto del suelo, permita que el aro que esta por detrás del resalto (4) se deslice y caiga al suelo junto con la mantilla. 30 Method of execution Whenever the element we have named as a blanket is loaded, the operator must take two rings (9) (figure 2), which may be previously attached to the blanket or not, and hook into each hoop body ( 9), or handles (10) and / or (11) (if you have 5 of them), a connecting element (hook, carabiner, etc.), which can be attached directly to the blanket, to a ring of the vertex of the mantilla, or a combination in which a rope, rope, chain, etc. mediates. The hoops should be positioned parallel to each other and, if possible, perpendicular to the ground, being anchored in this position by introducing their spikes (11) (if they contain them) on the blanket load. The orientation of the rings must be such that the loading maneuver is facilitated when the tractor passes. When the pen that contains the clamp at its end (figure 1), maneuver to load the blanket, it is time to check if the angle between the clamp and the ground is adequate so that it can enter through the inside of the rings, ( as long as the device allows said option), said angle can be corrected by modifying the position of the chassis 15 (1), with respect to the support (2), without removing a bolt and turning the chassis (1) until it matches another hole (or position on the groove), and then reintroduce the previous bolt or fixing element, the way to block the bolt so that it does not accidentally move from its position, can be by means of pins, nuts, grommets, etc. 20 The boom operator must open the clamp by actuating the hydraulic cylinder (6), and insert the bar (3) inside the two rings, until the first of the rings to enter is behind the shoulder, and the second behind the first tooth (7). Then the operator will close the clamp using the actuator (6) and raise the blanket to the height necessary to unload it. 25 The unloading operation consists in opening the clamp by means of the actuator (6), until the outermost ring is detached, which held two of the ends of the blanket, which causes emptying. Subsequently, the boom is operated until the angle of the clamp with respect to the ground, allows the ring behind the shoulder (4) to slide and fall to the ground along with the blanket. 30

Claims

CLAIMS 1. Device for handling loads on blankets, by using a hydraulically operated clamp and installed on the end of a crane or boom, which conveniently manipulated can hold two hoops, which properly attached to the vertices of a blanket, of Directly and / or indirectly by means of connecting or joining elements such as: hooks, carabiners, ropes, etc., allow manipulating the existing load on said blanket, for its elevation, emptying and recovery of the same. The device is characterized by presenting: - A support (2) that attached to the arm of a crane or boom, supports a chassis (1), which in turn supports a bar (3), an arm (5) and a hydraulic cylinder (6). In the lower part of the chassis (1) the bar (3) is located, on which there is a shoulder (4). On said bar (3) close the teeth or pivots (7) and (8), which are attached to the arm (5) and protrude from its lower part, the first being located near the end of the arm and the second displaced inwards , the arm (5) 15 is in turn attached to the chassis (1) on one side by means of an articulated joint, and on the other to the end of a hydraulic cylinder (6) which also with an articulated joint at said end and at the top of the chassis (1) will act to move said arm. - Two rings (9). Device for handling loads on blankets, according to claim 1, in which the chassis (1) can be composed of two parallel plates, joined together by reinforcements or internal separators, said plates containing a series of through holes in their faces flat, which allow by means of joining elements such as pins, bolts or screws, to hold the different elements could rest on the chassis (1) that they constitute. 4. Device for handling loads on blankets, according to claim 1, in which the chassis (1) can consist of a plate, containing a series of through holes, allowing by means of joining elements such as pins, bolts 30 or screws, to hold the different elements could rest on the chassis (1) that constitutes said plate.

5. Device for handling blanket loads, according to claim 1, in which the angle between the support (2) and the chassis (1) can be modified thanks to the combination and fixing of the hole at the end of the support (2), with any of those provided in the chassis (1) for this purpose, whose main characteristic is that its centers are a constant amount from which 5 serves as a turn to the support (2). 6. Device for handling loads on blankets, according to claim 1, in which the angle between the support (2) and the chassis (1), can be modified thanks to the different positions that can be taken by a hole that is 10 in the end of the support (2), on a groove in the shape of a through arc on both sides of the chassis, fixing the position on it by means of a connecting element. 7. Device for handling loads on blankets, according to claim 1, in which the support (2) of the side that is attached to the end of the crane or boom, can contain a spike and one or more holes that allow its adaptation or joining to said crane or boom, and on the side that is attached to the chassis (1) contains two holes that fix and immobilize the union by means of screws, pins or bolts, to said chassis (1). Device for handling loads on blankets, according to claim 1, in which each ring (9) can have one or two handles (10) and (11) and / or a spike (12), in solidarity with its body. 9. Device for handling loads on blankets, according to claim 1, in which each of the rings (9) by its body or handles (10 or 11), is subject to a vertex of the blanket, existing in the two vertices Remaining a hook or carabiner in each. 10. Device for handling loads on blankets, according to claim 1, wherein the support (2) is an extension of the chassis itself (1), being fixedly attached or forming part of it.

11. Device for handling loads on blankets, according to claim 1, in which the chassis (1) can be attached to the bar (3), by means of fixing elements and / or 35

union, such as screws, pins, bolts, etc., or the bar (3) can be an extension of the chassis itself (1), being able to be fixedly attached or part of it.