• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Automatic system for automatically increasing the linear displacement of a mobile structure using cables. The structure is a lift platform of a cargo vehicle by cable traction; comprises extensible pillars (8), guides on the pillars (8) through which lift bodies (7) running integral to the platform with a length L, cables (4) linking the lifting bodies (7) run with an actuator that releases or hunts a certain length of the cables (4); there is a lifting pulley (9) disposed at the upper end of the movable portion (21) of each pillar (8), and an extender system (16), which allows the lifting of the pulley (9); and a control body that regulates the system; the platform can be raised relative to the fixed part of the pillar (8) by up to a length L, with the pillars (8) in full or partially extended position. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2684547A1
    申请号:ES201700486
    申请日:2017-03-29
    公开日:2018-10-03
    发明作者:José Alfonso SOUSA VÁZQUEZ
    申请人:Efitrans Efficient Logistics S L U；Efitrans Efficient Logistics SLU；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Automatic system to increase the linear displacement of a mobile structure using cables.
    Object of the invention
    The present invention aims at a mechanical system that automatically increases the linear displacement, normally of elevation, of a structure beyond its structural limits, such as a mobile loading platform in a transport vehicle, using for this purpose innovative cable and pulley system, driven by at least one hydraulic actuator; it also comprises a device for blocking the structure of the structure that prevents possible collapses of the structure when it is elevated; This allows to increase the useful space inside the loading area in a simple, safe and efficient way.
    Background of the invention
    A multitude of systems are known that serve to increase the linear path of various structures and elements. As they can be, the articulated scissor systems moved by hydraulic actuators, which allow a structure to move large linear distances.
    Telescopic hydraulic systems are also known which, like the mechanism indicated above, allow a structure to be moved linearly, achieving large paths. These systems have drawbacks when the space available is very limited, since in order to achieve a great tour of the structure, a multitude of hydraulic actuators are required to perform the different extensions or only one is needed, but large. In addition, in this type of mechanism, it is necessary that the actuator be directly related to the element to be displaced. Its use in the cargo space of a vehicle will reduce this space, and the use of multiple hydraulic actuators presents difficulties for its synchronized regulation, and a high manufacturing and maintenance cost.
    Also known in the state of the art are systems that obtain a displacement by means of a set of cables, made of various types of steel, which are guided by pulleys and activate their displacement by hydraulic or mechanical actuators. These types of systems are widely used to move double-floor systems in freight trucks and also to move platforms in vehicle transport trucks, among many other applications in various sectors. In these systems, the different pulleys are located defining the travel and travel height of the mobile structure, meanwhile, one end of the cables joins the actuator and the other end joins the structure to move, therefore, with In this configuration, the maximum possible displacement of the mobile structure is restricted by the height and fixed position of the pulleys, and cannot be adjusted once the circuit has been defined. The advantage of this system is that the cables occupy a much smaller space than the hydraulic actuators.
    In summary, with the systems mentioned above, it is not possible to understand in the same mechanism: an extensible system, which occupies a very small space and works through a system of cables and pulleys.
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    Description of the invention
    By means of the mechanism of the invention, an automatic extension of the linear path of a structure can be carried out by means of a system of cables and pulleys, activated by at least two hydraulic actuators, as will be seen below. According to said invention it is possible to determine the height of a transport vehicle in running order to be adjusted to the local regulations, and the height at which a loading platform is located in said transport vehicle, said platform being able to be used, for example, for the transport of vehicles.
    The present invention therefore solves the problems presented by current displacement systems by using cables and pulleys, since it allows a linear displacement of the pulleys that restrict the lifting height of the mobile structure, thus being able to increase the lift travel of the mobile structure, from an elevated position to an elevated position, and increase the load capacity and versatility in the use of the vehicle.
    An additional advantage is that the means that allow to increase the capacity of the loading medium are retractable and its dimensions very small, which supposes a considerable advantage over other solutions, in which such means include fixed elements which do not allow to adapt to different heights
    When referring to a vehicle, the cargo box of a truck, of a trailer or semi-trailer, of a train car, or an adaptation of means similar to cargo containers, among others, should be understood as a non-limiting general nature.
    Thus, in a summary manner according to the invention, a vehicle is provided with a set of vertical pillars at the exterior angles or edges of its loading area. The upper end of each of the pillars is provided with a pulley, said pillars being telescopically extendable by one or more hydraulic actuators synchronized with each other, with a fixed part of the pillar that is part of the vehicle structure, and a mobile extendable part , and in which the pulleys are located in the mobile extendable part of each pillar. The pillars form in their fixed part a sliding guide of a lifting body. The lifting body is integral with a structure or mobile platform that can be lifted and can move between a lower position at the base of the pillars and an upper position limited by the roof of the vehicle, when the pillars are retracted, and an elevated position, when the pillars are extended, in which said raised position is determined by the state of elevation of the pillar, so that the height limit of the lifting body when the extendable pillar is retracted will be determined by the roof of the vehicle, and when it is extended It will be determined by the upper end of the guide through which the lifting body slides, allowing an over-elevation in almost the same measure as the height of the lifting body. The roof of the vehicle, if it has one, is liftable together with the mobile part of the pillars. The operation of the lifting cables of the lifting bodies is preferably carried out by means of a hydraulic drive, preferably arranged horizontally at the base of the vehicle below the loading area, in which the mobile part of the hydraulic drive is directly or indirectly attached to the ends of the cables, said hydraulic drive determining the degree of extension or retraction of the cables, the cables extending the extension of the hydraulic means and retracting their retraction, or vice versa.
    The operation of the present invention is carried out by a system formed by a plurality of pulleys and cables, preferably activated by at least one hydraulic actuator.
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    The cables, in their path between the actuator and the mobile structure, are guided in their path by means of a series of pulleys from the actuation means to the lifting bodies thereof, determining their degree of extension or retraction in the direction and the magnitude of the displacement of the mobile structure.
    According to a preferred embodiment, the lifting bodies that move the mobile structure consist of solid parts.
    In a preferred embodiment, the mobile structure is formed by two longitudinal beams or trusses, parallel and located at the same height, along which at least one transport platform is located and can be moved. The maximum lifting displacement of this mobile structure is restricted to a certain maximum height, normally the maximum height allowed by the regulations for each means of transport. In particular, when the means of transport is a truck or trailer and it is desired to use it in a versatile manner, for example to transport vehicles and other goods, it is desirable that the height of the means of transport in question can be increased depending on the needs, for example to obtain more maneuvering space at the time of loading or to maximize the loading area of goods and minimize the loading of vehicles on routes where vehicles are not transported, since the maximum height of the same in circulation , depending on the use to which it is intended, is defined by the regulations, being mandatory to adhere to these dimensions. This problem is solved with the present invention. In this way, it is necessary to adapt the mechanisms that are integrated in said means of transport for the most restrictive height, but, in such a way that they have a vertical displacement system that increases the height of the assembly, thus obtaining the maximum volume useful inside the means of transport, or the maximum maneuvering space for loading and unloading tasks.
    In the mechanism of the invention, the lifting bodies move along guides located in vertical lifting pillars, specially designed for this. The guides are positioned on the pillars vertically in the direction of movement of the mobile structure, so that said lifting bodies move without significant friction in both directions, to raise or lower the mobile structure depending on the degree of extension of the cables to which they are attached. These guides, in an exemplary form of manufacturing, have a "U" shaped cross-section and are positioned so that the open area of the "U" is oriented inwards and faces the symmetrically arranged one. The length of these guides is the maximum allowed to achieve the most restrictive total height, that is, the fixed portion of the pillars that will be detailed later. The lifting bodies have a length L between their upper part and their lower part; when the extendable pillars are extended, the lifting bodies, together with the mobile platform, may be elevated to a position where the upper part of the length L of the lifting bodies protrudes from the guides and the lower part of said length L remains embedded in the guides, so that a significant portion of the lifting bodies protrudes from said guides in their upper part.
    The lifting bodies have in their interior a system of retainers, for example, operated by pneumatic, hydraulic or servomechanical means. These retainers consist of stems that move laterally from a position in which they are inserted in said lifting bodies and do not exert any function, to a position in which they are removed from said lifting bodies and have the function inserted into one of a series of holes made in the guides, so that they fix and secure the position of the mobile structure. These retainers have a safety locking system and in the event that any of the cables fail or break, the retainers are triggered automatically avoiding the collapse of the structure.
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    As noted, the pillars are also configured so that they form an extender system; The extender system is formed, for example, by two concentric profiles that can slide between them, with an extension device, usually a hydraulic actuator, but possibly also by electromechanical means, so that one of the profiles is fixed (usually the exterior, integral to the structure of the base of the vehicle) and another of the profiles is mobile (usually the interior, integral to the roof of the vehicle). These profiles may have a substantially square or rectangular cross-section, where, as stated, the fixed outer element is fixedly attached to the fixed part of the pillar, while the inner mobile extensible element is attached to the ceiling, or vice versa .
    Thus, the mechanism of the invention comprises at least two fixed vertical pillars that are arranged on the sides of the base of the vehicle, the height of which is the maximum allowed by the most restrictive norm.
    Preferably, the system of the invention may include four vertical pillars arranged in pairs facing each other.
    Said pillars have, by their external wall, a movable telescopic movable movable portion with respect to the fixed portion of the pillar when the roof is raised by the aforementioned extension device. This movable portion has the same cross section as the pillar, and normally wraps around the outside of the vehicle. This movable portion is guided by the pillar, but leaving a millimeter clearance between both elements to allow movement without significant friction. The fixed portion of the pillar is integral with the fixed portion of the fixed profile. The mobile portion of the pillar supports the pulley through which the lifting cable of the mobile platform runs, so that when this mobile portion rises, the pulley is also raised, this mobile portion is attached to the roof structure of the vehicle on its face higher. In order for the pulley to be lifted without changing the position of the mobile platform, it is necessary that the cables accompany the movement of the pulley; This is achieved by increasing the length of said cables. A control organ, such as an automaton, controls the movements of the actuator and corresponding displacement of the cables, and determines the corresponding extension of the cables. The movable portion of the pillar is jointly joined by its upper part to the roof, or, what is the same, the roof has in solidarity the lower part of the profiles that make up the extensor system located in the pillar, and also the mobile profile .
    The lifting bodies are normally of a solid material, and have a recess in its upper part so that at least a portion of the upper pulley can be introduced into said recess when the pillars are not extended, or are shorter in length. than the length L of the lifting bodies.
    When you want to proceed with the lifting of the mobile platform, initially you start from the resting position of the system, that is, in a preferred way of operation, with the hydraulic drive rod moved to its maximum (or minimum) extent, the mobile platform at rest on the ground of the means of transport and the roof located on the abutments in a retracted position. If the blocking means are extended, they must also be retracted to allow the movement of the lifting bodies.
    Starting from this position, the signal is given so that the actuator rod begins to retract (or extend), accompanying in its movement the cables that it has attached at its end. In this way, the cable assembly moves at the same time, raising the lifting bodies attached to the ends of the cables and to the mobile platform, to the maximum height that at this point allow the pulleys that are located at the top of the pillars.
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    In order to increase the maneuvering space of the vehicle it is necessary, at this point to raise the roof. It may happen that the platform is located at its maximum height or that it is below its maximum height. In either case, the signal is given to the automaton to extend the hydraulic actuator that displaces the telescopic element located in the pillar and with it the pulleys located in the extendable portion of the pillar. Simultaneously, to keep in position or move the platform if it has not reached the maximum height position (in which the lifting bodies have reached the upper end of the fixed portion of the pillar), the hydraulic drive that moves the cables, twice the length displaced by the hydraulic actuator to maintain the height position of the platform, to a greater extent to lower the platform or to a lesser extent to make it rise. In the case that it is desired to maintain the distance with the ceiling, the length of the displaced (extended) cable must be equal to that of the extension of the hydraulic actuator of the abutment extension. In this way, no element interferes with the path of others. Until reaching the maximum lifting height to which the mobile platform can reach, since the height of said platform is conditioned by the size of the lifting body, since it has to be inserted at all times inside the guides of the pillar.
    From this point the roof can continue to rise without displacing the platform, giving the automaton a signal to increase the length of the cables twice the length of the elevation of the pillars, proceeding to shoot the locking means to secure fixing by locking with the holes in the guides, reached the desired position.
    To make the descent of the mobile platform proceed in reverse. When the ceiling is raised, the locking means are initially released, the signal is given to the automaton so that the actuator that moves the telescopic system and the actuator that moves the cables act at the same time, the first of them retracting until reaching the zero stroke position of the rod and the second picking up the portion of the cables corresponding to the elevation of the pulleys. Once the roof rests on the pillars, the actuator that moves the jaws continues to operate until the mobile platform rests at the ground level of the means of transport.
    Brief description of the drawings
    In order to illustrate the explanation that will follow, we attach to this description, thirteen sheets of drawings, in which thirteen figures are represented by way of example and without limitation, the essence of the present and in which you can observe the following:
    Figure 1 shows a perspective view of an exemplary embodiment, in which the automatic linear displacement increase system of a mobile structure by cables, of the invention, adapted to be installed in a truck or trailer is shown.
    Figure 2 shows another perspective view of the system of Figure 1.
    Figure 3 shows a perspective view of a detail of the elements that form the pillar, with the roof positioned at the most restrictive height.
    Figure 4a and 4b show a detailed perspective of the lifting body that is part of the pillar of Figure 3 from different points of view.
    Figure 5 shows a perspective view in which the system of Figure 2 can be seen in detail with the telescopic element.
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    Figure 6 shows a perspective view of the system of Figure 1, in the initial rest position of the system.
    Figure 7 shows a perspective view of the system of Figure 1, in a more restrictive height position for the assembly.
    Figure 8 shows a perspective view of the system of Figure 1, in the position of maximum displacement, of both the inner moving element and the roof.
    Figure 9 shows a sectional view of the extensible abutment provided with the lifting means.
    Figure 10 shows a detail of a pillar according to the invention with the roof extended and the platform at a height close to its maximum height.
    Figure 11 shows a detail similar to that of Figure 10 with the ceiling at its minimum height.
    Figure 12 shows a detail of the system of the invention in a position in which the mobile platform is raised above the upper end of the fixed part of the pillars, and the roof is also in an elevated position.
    In these figures you can see the following reference signs:
    1.2 beams or trusses of a mobile structure
    3 transport platform
    4 wires
    5 cable guide pulleys
    6 hydraulic drive
    7 lifting bodies
    8 pillars
    9 lifting pulleys located at the top end of the pillars
    10 upper part of the lifting bodies
    11 lower part of the lifting bodies
    12 guides
    13 guide holes
    14 retainers
    15 folded sheet
    16 pillar extender system 8
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    17 fixed profile of the extender system
    18 mobile profile of the extender system
    19 lifting actuators of the mobile portions of the pillars 8
    20 roof
    21 mobile portions of the 8 pillars
    Detailed description of the preferred embodiments
    In order to achieve a better understanding of the invention, the system for automatically increasing the linear displacement of a mobile structure by means of cables of the invention, as well as its mode of operation, will be described below.
    Figure 1 shows the system according to an especially advantageous embodiment thereof, adapted, in this particular case, to be installed in a means of transport such as a truck or a trailer.
    As described above, according to an example of embodiment the mobile platform is formed by two beams or trusses (1,2) arranged parallel and longitudinally, on each side of the vehicle, and located at the same height, which support the minus a transport platform (3).
    This mobile structure is displaced by a plurality of cables (4) that are driven to the lifting zone by means of respective pulleys (5), and which are moved by a hydraulic drive (6) or other equivalent system. The distribution and elements are shown in Figure 2. The cables (4) are attached at one of their ends to the rod of the hydraulic drive (6) and at its other end each is attached to one of the lifting bodies (7).
    According to the option shown, not limiting, the mechanism of Figures 1 and 2, includes four lifting bodies (7), which are mounted inside guides located in the respective vertical lifting pillars (8), extensible according It will be seen later. These lifting bodies have a length L inserted in the corresponding guide and are jointly joined to a mobile platform, such as that formed by beams or trusses (1,2), and are always located at equal height with each other. The mobile platform is attached to the upper part of said lifting bodies (7). The movement of the lifting bodies (7) and with them of the mobile platform is synchronized; in this example, it is produced by means of the hydraulic drive (6) that moves the cables (4) that from respective pulleys (9) located at the upper end of the pillars, moving the lifting bodies (7) with the movement of the cables ), thus allowing a uniform vertical movement of the mobile platform.
    The lifting bodies (7), as shown in Figure 4, have a substantially prismatic shape, provided with a recess in its upper part that allows a maximum approach to the pulleys (9) located at the upper end of the movable portion (21) pillars (8), when these pillars (8) have their minimum height, that is, when the height restriction is the maximum. These lifting bodies (7) have a height (length L) specially designed so that the mobile platform (1,2) has the maximum vertical travel, since the mobile structure joins said lifting bodies (7) in turn upper (10) being free a large portion of said lifting body in its lower part (11), as shown in Figure 5. These lifting bodies (7) can therefore be
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    raised above the guides (12), as long as at least a small portion of said lifting bodies (7) remains embedded in said guides (12), and as long as the degree of roof elevation (20) of the vehicle so allow.
    As can be seen in Figure 3, the guides (12) that form the pillars (8) have a series of holes (13), usually on a wider face, arranged in vertical alignment along the entire length of the said guides (12), in order to be able to accommodate retainers (14), for example, pneumatic, hydraulic or servomechanical, which have the lifting bodies (7) installed, usually in their lower part (11), as a device for security lock These retainers (14) are automatically released when the mobile platform reaches the desired position, locking on at least one of the holes (13) of the guide (12) fixing and securing its current position. As soon as the platform is to be moved, the signal is given and the system automatically retracts the retainers (14), until the mobile platform stop signal is given again so that they fire again.
    As a safety means, the retainers (14) of the lifting bodies (7) are automatically released, preventing the collapse of the mobile structure, in the event that the tension of said cables on said lifting body is released, for example , that any of the cables (4) is broken, or the control organ that manages the system detects any failure in the operation of said system.
    As shown in Figures 3, and 5, the pillars (8) are constituted, in the example represented, by a series of elements, such as, a folded sheet (15), for example, made of some steel alloy, which houses guides (12) through which the lifting bodies (7), described above, move vertically. These pillars are provided next to them with an extension system (16), which in an alternative embodiment could be formed in the pillar itself, but which according to material embodiment is formed by two concentric profiles (17,18) attached to the pillar, which can extend telescopically, and a hydraulic actuator (19) that produces the extension of the system. Preferably, this hydraulic actuator (19) will be housed inside the fixed profile (17), normally the outside, and that displaces the mobile profile (18), normally inside. The movable profile (18) is integral to the roof structure (20), that is to say, to the structure that closes the means of transport at the top, and the fixed profile is integral to the pillar (8). The movable profile (18) is linked directly or through the roof (20) of the vehicle with the movable portion (21) of the pillar (8). Said portion is guided and wraps around the entire pillar assembly and extensor system in a retracted position. A detail of an example of this configuration can be seen in Figure 9.
    Although normally the number of pillars (8) will be even and symmetrical with respect to the central longitudinal plane of the vehicle, this number can be variable, from a minimum of two, without having to be symmetrical or be paired.
    As can be seen in Figure 5, each pillar has a movable portion (21) that guides the elevation of the roof (20), which moves along the outer face of the pillar (8) using it as a guide, when the roof is raised by the extender system (16). The upper end of said movable portion (21) supports the pulley (9) on its inner face so that it is aligned with the upper end of the guides (12) when the pillar (8) is with the movable portion (21) retracted , that is to say in the smallest height or most restrictive height, which determines the maximum height that the lifting body (7) can reach in its vertical travel.
    In said minimum height condition, the movable portions (21) of the pillar (8) are located externally by wrapping the outer surface of said pillar (8), as can be seen, for example, in Figure 3, with a minimum separation between them so that they do not occur
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    significant frictions in their relative displacement. Also the roof (20) is located just above the upper face of the vertical lifting pillars (8).
    To perform the lifting movement of the mobile platform, the minimum height position is started, in which the roof (20) is supported on the upper face of the vertical lifting pillars (8), the mobile platform located on the base of the vehicle and the hydraulic drive (6) that moves the cables (4) into position (extended or retracted, according to the orientation of the joint) in which said cables (4) are fully extended, as shown in the figure 6.
    In this position a signal is given so that the automaton activates the hydraulic drive (6) and so that the retainers (14) that hold the lifting bodies (7) to the pillars (8) are released, so that a traction of the cables and with it the elevation of said lifting bodies (7) through the interior of the guides (12) to their maximum elevation and of the mobile platform integral to said lifting bodies. That is, the mobile platform is raised to the maximum height at which the pulleys (9) are partially introduced in the recesses made in said lifting bodies. There may be a mechanical stop or it is the automaton that limits movement. This position can be seen in Figure 7.
    As shown in Figure 8, once the position shown in Figure 7 is reached, it is necessary to move the roof (20) and the pulleys (9), in order to achieve greater displacement of the mobile platform, and therefore , greater useful space inside the trailer, and perform the lifting of the lifting bodies (7) in a distance not greater than its length L.
    The displacement of the ceiling (20) is produced by the extender system, and particularly by the actuators (19) installed in the fixed profiles (17) of said extender system (16). In turn, the roof (20) is joined in solidarity with the movable portions (21) of the pillars (8), which integrate the pulleys (9) that limit the displacement of the lifting bodies (7). Thus, the extension of the extender system (16) not only raises the roof (20), but also the movable portions of the pillars (8) and the pulleys (9) attached thereto with the roof (20). In order to raise the roof, the initial length of the cables (4) must be increased. This extension of the length of the cables (4) must occur simultaneously with the activation of the actuator cylinders (19) that raise the roof (20).
    The automaton will determine the displacements and the speeds at which the roof (20) moved by the actuators (19) and the cables (4) moved by the hydraulic drive (6) must move. In positions of the mobile platform below its maximum height, for a simultaneous elevation of the roof (20) and the mobile platform at the same speed and keeping the distance between them constant, the travel of the cables (4) must be equal to that of the actuators (19). Once the maximum elevation of the lifting bodies (7) has been reached, and to maintain that position while the roof continues to rise, the cable routing (4) must be twice that of the actuator travel (19).
    In an alternative way of performing the roof and mobile platform lift, the signal is initially given to extend the length of the cables and to extend the actuators (19) that raise the roof, simultaneously, raising only the roof to the desired height. Once the roof is raised, the mobile platform (1 and 2) is raised, giving the signal to release the retainers (14) and so that the cylinder that moves the cables begins to act, thus raising the mobile platform to its highest position. elevated which is what allows the lifting body or to the desired position. When this position is reached, the signal is given to fire the retainers again, fixing and securing the mobile platform in this position.
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    To perform the maneuver of lowering the roof (20) and the mobile platform, proceed in the opposite way as explained above, that is, first the roof is lowered to the position where the mobile platform is located. To perform this maneuver without the mobile structure varying in position, the signal is given to the automaton so that it shortens the length of the cables to twice the speed with respect to which the actuator that moves the ceiling retracts. When the position of the mobile platform is reached, the automaton gives the signal so that the hydraulic actuation of the cables (4) shortens the length of the cable at the same speed at which the actuator that moves the ceiling retracts, in this way the roof (20) and the mobile platform will go down at the same time. Once the position in which the roof (20) is placed and rests on the pillars (8) has been reached, the automaton will give the signal to the actuator (6) that moves the cables to extend them to the desired position, normally the maximum extension in which the mobile platform is at its minimum height, being finally as shown in figure 6.
    However, according to other modes of operation, both the roof (20) and the mobile platform can be lowered simultaneously until the roof is placed on the pillars (8) and then continue lowering the platform until it rests on the ground.
    When we have talked about cables throughout the explanation, we must also understand the use of other equivalent traction means, such as belts or chains, without limitation. Also the drive means equivalent to the hydraulic systems mentioned, such as pneumatic systems (although not advisable due to the large load they can bear) or electromechanical.
    It is evident that, although throughout the description the displacements in the upper and lower extreme positions of the different elements are indicated, both the roof and the mobile platform can be left in intermediate positions both in running order, and for the load / unloading of goods or vehicles.
    权利要求:
    Claims (11)
    [1]
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    1. Automatic system of automatic increase of the linear displacement of a mobile structure by means of cables, said structure being normally a mobile platform movable in height of a cargo vehicle by cable traction, characterized in that it is formed by the following elements:
    • Pillars (8) supporting the roof (20) of the vehicle and the mobile platform, said pillars being extensible, with a fixed portion on the structure of the vehicle and a movable portion (21) integral with the roof of the vehicle (20) , which can be displaced by extending the length of said pillars.
    • A set of guides (12) arranged in the fixed portion of the pillars (8).
    • A set of lifting bodies (7) integral to the platform in the positions corresponding to the guides (12) through which they slide, which have a length L.
    • A set of cables (4) connected at one end to the lifting bodies (7) and in the other to an actuator that moves them between a position of minimum extension and a position of maximum extension.
    • An actuator that adopts at least one position of maximum extension and one position of maximum retraction, which releases or hunts a certain length of the cables (4).
    • A lifting pulley (9) disposed at the upper end of the movable portion (21) of each abutment (8), which guides the cables (4) from the lifting bodies (7) towards the actuator.
    • an extension system (16), which is part of or at least one of the pillars (8) or is linked to them, which extends the pillar (8), raising the roof (20) of the vehicle and the lifting pulley (9 ).
    • A control body that regulates and synchronizes the degree of extension / retraction of the actuator and the extender system.
    In which the lifting bodies, and with them the mobile platform, can adopt any position between the upper end and the lower end of the fixed part of the pillar (8) with the pillars (8) in a retracted position and an elevated position up to a length L, with the pillars (8) in the extended position, in which the roof (20) of the vehicle, together with the lifting pulley (9), can take any position between the upper end of the fixed part of the abutment (8) with the extender system (16) retracted and the upper end of the extender system (16) in maximum extension position.
    [2]
    2. Automatic system of automatic increase of the linear displacement of a mobile structure by cables, according to claim 1, characterized in that the mobile platform is formed by two beams or trusses (1,2) arranged parallel and longitudinally, on each side of the vehicle , and located at the same height, which support at least one transport platform (3).
    [3]
    3. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to any one of claims 1 to 2, characterized in that the actuator that moves the cables is a hydraulic drive (6) arranged in the base of the
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    Four. Five
    fifty
    vehicle chassis, and because the cables (4) are connected to the mobile part of said hydraulic drive (6).
    [4]
    4. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to any one of claims 1 to 3, characterized by the lifting bodies (7) are solid.
    [5]
    5. Automatic system of automatic increase of the linear displacement of a mobile structure by means of cables, according to any of claims 1 to 3, characterized by the lifting bodies (7) have a substantially prismatic shape, and are provided in their upper part with a recess corresponding to the position of the pulley when said lifting bodies (7) are in their maximum extension position and the abutment (8) is retracted.
    [6]
    6. Automatic system of automatic increase of the linear displacement of a mobile structure by means of cables, according to any of claims 1 to 5, characterized in that the guides are provided along their length of holes (13), and why Lifting bodies (7) are provided with a safety locking device consisting of retainers (14) that face the holes (13), which can be removed to be locked in said holes (13) and block the movement of lifting / lowering the mobile platform, or retracted to release the lifting movement of said platform.
    [7]
    7. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to claim 6, characterized in that the safety locking device is provided with an automatic means for extracting the retainers (14) and locked in the holes (13) when the voltage of at least one of the cables is released, for example, due to a breakage.
    [8]
    8. Automatic system of automatic increase of the linear displacement of a mobile structure by means of cables, according to any of claims 1 to 7, characterized in that the extensor system (16) is formed by two concentric profiles (17,18), an outer profile (17) and an inner profile (18), which house a hydraulic or mechanical actuator (19) inside it, and because one of the profiles (17,18) is fixed with respect to the chassis of the vehicle's loading area, and the other (18.17) is telescopically displaceable with respect to the first (17.18) by the action of the actuator (19), and because the mobile part of the abutment (8) is linked to the mobile part of the actuator (19) directly or through the roof (20) of the vehicle.
    [9]
    9. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to any one of claims 1 to 8, characterized in that the cables (4) are driven to the lifting area by means of a set of pulleys from the actuator area to the lifting pulley (9).
    [10]
    10. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to any of claims 1 to 9, characterized in that the mobile platform is connected to the upper part of the lifting bodies (7).
    [11]
    11. Automatic system for automatically increasing the linear displacement of a mobile structure by means of cables, according to any one of claims 1 to 10, characterized in that the movable portion (21) of the pillar (8) is integral with the ceiling (20) and remains guided and wraps around the outside of the entire pillar assembly and extensor system, in a retracted position.
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    同族专利:
    公开号 | 公开日
    ES2684547B1|2019-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB351736A|1930-06-24|1931-07-02|Campbell James|Improvements relating to vehicles having a platform raised within a removable body by ropes or chains, and an improved tackle for removing such bodies|
    US3405661A|1966-07-26|1968-10-15|Preco Inc|Adjustable second deck for transport vehicles|
    WO1980001553A1|1979-02-05|1980-08-07|Bilspedition Ab|A transport device|
    DE3046285A1|1980-12-09|1982-07-08|Odenwaldwerke Rittersbach, Kern & Großkinsky GmbH, 6957 Elztal|Hand-operated loading mechanism - has frame fitted to vehicle with lifting arm guided in supporting arm|
    US5833412A|1997-05-09|1998-11-10|Valencia; John H.|Jet ski trailer locking apparatus|
    WO2013178502A1|2012-05-29|2013-12-05|Lavmands Last & Karosseri A/S|A platform system for a cargo compartment of a truck, lorry or trailer|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201700486A|ES2684547B1|2017-03-29|2017-03-29|Automatic system to increase the linear displacement of a mobile structure using cables|ES201700486A| ES2684547B1|2017-03-29|2017-03-29|Automatic system to increase the linear displacement of a mobile structure using cables|
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