• 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:
    Liftable work platform as an attachment attachment to a three-point agricultural tractor (1) constituted by an articulated mechanism that has in its terminal element a lifting platform (2) in the form of a cage to lift people and perform agricultural tasks in height safely. The elevating platform (2) of the implement is self-leveling and its actuators are oleohydraulic cylinders of double effect, whose oil is supplied from an independent control unit by means of a pump driven by an electric motor that is fed from the tractor's battery. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2638542A1
    申请号:ES201630499
    申请日:2016-04-20
    公开日:2017-10-23
    发明作者:Justo Ruiz Calvo；Samuel SANTAMARÍA RIOCEREZO；Alberto MARTÍNEZ MARTÍNEZ；Jesús PELÁEZ VARA；Francisco Javier GÓMEZ GIL
    申请人:Universidad de Burgos；
    IPC主号:
    专利说明:

    ELEVABLE WORK PLATFORM AS A STEEL FOR
    AGRICULTURAL TRACTORS

    DESCRIPTION 5

    OBJECT OF THE INVENTION
    The present invention affects the agriculture sector and refers to a work platform that can be lifted as an implement, attachable to the front or rear tripuntal of an agricultural tractor, which allows the operator to perform work at 10 height in a safe way. Such agricultural works can be diverse, such as the pruning of tall fruit trees, the collection of fruit from said fruit trees, as well as other tasks related to the maintenance of rural housing cleaning of gutters, painting of facades of agricultural buildings, etc ... you work all of them that are not within reach of a person standing on the ground. fifteen
    STATE OF THE TECHNIQUE
    The lifting platform object of the invention has the advantage that it is not self-propelled but would be treated as one more implement, of the multiple farming tools used in agriculture and livestock to develop its 20 activities and that all are based on the main machine that transports them and drives their mechanisms, which is the agricultural tractor.
    At present, the realization of high-level work in agricultural sectors such as pruning and grafting of trees, collecting fruit from fruit trees among others, need the elevation of people for the correct execution of the 25 works. Currently these works are carried out with loaders, placement of stairs, scaffolding and more elements that can be an extremely dangerous action due to the risk of falling of the people who perform it.
    There is no explicit multipurpose tool designed for different tasks at height in the rural and agricultural-livestock world. Elongable or articulated stairs are used to reach the different levels of the woodland or the facades, or to the placement of scaffolding which is totally inconvenient to do 5 tasks that require little time to stay between each positioning, which induces the operator to use other tools that allow reaching these heights, but not being recommended from the point of view of safety at work. Also known are the use of vehicles equipped with an ES2217528 lifting boom and vehicles with a DE3228779 lifting blade for performing the 10 tasks described above.

    In the closest state of the art, we find Patent ES2154089 which describes a cab that can be attached to the agricultural tractor tripuntal, provided with a vertical telescopic movement. Our invention solves the problem of having only a vertical telescopic movement or also defined as a single degree of freedom, so that the elevating platform has four degrees of freedom thus covering a large volume of longitudinal, transverse and height work.
    Another advantage of our invention with respect to the state of the art is that it can be nourished by the electric energy coming from the tractor battery, running with the tractor engine stopped, allowing noise elimination and fuel savings.
    DESCRIPTION OF THE INVENTION 25
    The present invention is established and characterized in the independent claims, while the dependent claims describe other features thereof.
    The present invention relates to an elevating work platform as agricultural implement connectable to the front or rear tripuntal of agricultural tractors. The aforementioned implement consists of a mechanism of two articulated arms (11) and (12) joined together by their ends by means of rotation joints, so that one of the arms (11) joins the support piece (8) in L-shaped by means of horizontal rotation axis articulation and the support piece (8) in L, 5 is joined by means of vertical axis rotation articulation as a hinge to the base or frame (3) of the triangle-shaped machine and that it is in solidarity with the tractor triple.
    The furthest arm (12) has at its distal end a work platform (2) with a non-slip base with cage-like protection bars, attached to it by means of a horizontal rotation axis joint. The operation of both arms (11) and (12) is by double-acting oleohydraulic cylinders (9) and (10) respectively. The work platform (2) can also change its orientation with respect to the arm (12) to which it is connected by another oleohydraulic cylinder (13) which allows changing the orientation of the work platform 15 (2) in its vertical plane. Additionally, the assembly of this two-arm flat mechanism (11) and (12) with the work platform (2), has another oleohydraulic cylinder (16) with its ends anchored to the L-shaped support (8) by a side and to the frame (3) with a triangular shape on the other, so that the orientation of the 50º work plane can be changed on both the left and right sides 20 with respect to the middle longitudinal plane of the tractor.
    The operation of all oleohydraulic cylinders is carried out by means of the control valve levers located in the control box (14) located on the work platform (2). When the operator leaves the tractor (1) parked and braked, with the engine stopped, it goes up to the platform by moving up the 25 bar (15) and by means of a key located in the control box (14) it deactivates the starting system of the tractor, as well as deactivates the engine if it is running. The key, in addition to rendering the tractor engine start system unusable, allows an oil-hydraulic control unit located in the tray (7) to be connected to the tractor battery, and the operator can activate the switchboard by means of the key once the operator activates the four levers. that govern the four distribution valves located in the control box (14) and that actuate the four oleohydraulic cylinders mentioned above.
    The oil-hydraulic control unit has a small oil tank, and a direct current electric motor that drives an oil-hydraulic pump as well as an adjustable safety valve.
    The work platform (2) has an inclinometer, which can be of the electrical type that activates a strident acoustic alarm that warns when the location of the work platform (2) approaches a situation of instability or possible overturning of the assembly. When this warning occurs, the separation of the work platform (2) from its frame (3) cannot be increased.
    The work platform (2) has a level sensor, which can be of the electric type, located longitudinally at the base of the work platform (2) that acts, on the oil supply to the oil-hydraulic cylinder (13) so that 15 maintain the verticality of the platform cage (2) automatically, each time any of the oleohydraulic cylinders (9) and (10) of the arms (11) and (12) are operated.
    The implement has a second buzzer alarm or buzzer, which emits a different sound from the previous one, warning that the battery of the tractor (1) is low in charge and must be recharged.

    DESCRIPTION OF THE FIGURES
    The description of the invention is complemented by a set of illustrative figures of the preferred and never limiting example of the invention. 25

    Figure 1 represents a view of the implement in a situation of disconnection of the tractor (1) or in a parking situation, with the entire mechanism folded, resting on the ground on its height-adjustable parking legs (6) and on the base of the Work platform (2) with non-slip base. In this figure 30 we can see all the main components of the implement in a situation of total folding, with the oleohydraulic cylinder (9) of the arm (11) and the oleohydraulic cylinder (13) of the work platform (2), fully retracted and the oleohydraulic cylinder (10) of the arm (12) fully extended with the oleohydraulic cylinder 5 (16) of the work plane orientation halfway.

    Figure 2 shows the work implement attached to the rear tripuntal of an agricultural tractor (1) in transport situation, with the mechanism folded. In this figure the form of transport of the implement can be observed although the elevation of 10 of the implement with respect to the ground can be greater or smaller at the will of the tractor driver by means of the tripuntal lift system, which regulates the height of transport of the implement.

    Figure 3 shows the implement frame (3) in the shape of a triangle and the shape of a hitch to the triple tractor of the agricultural tractor. In it we can see the hitch bar (4) that is held in the arms of the tractor lifting system and that must be introduced in both vertical grooves (17) located in the front part of the frame (3) and subsequently secured with the bolts (18) and safety pins (19). twenty

    Figure 4 shows the implement deployed with the work platform (2) in a maximum height situation, with vertical orientation and its horizontal base.

    Figure 5 shows the implement deployed with the platform (2) in a situation of maximum horizontal reach, maintaining the orientation of said platform (2) vertical with its horizontal base.
    DETAILED DESCRIPTION OF THE INVENTION
    In view of the foregoing, the invention relates to an elevating work platform as an attachment that can be connected to the front or rear tripuntal of an agricultural tractor (1) comprising:
    a) A rigid frame (3) in the shape of a triangle with a three point anchoring system to the tractor's tripuntal (1). Two points constitute the mooring to the arms of the tractor by means of the hitch bar (4) and the third point, by means of an extendable arm with kneecaps on both ends, one of its ends being hooked to the anchor (5) 10 of the frame, and the other end to the third point of the tractor.
    b) An L-shaped support element (8) that is attached to the frame (3) by means of a vertical axis rotation joint.
    c) An articulated mechanism with two arms (11) and (12) the proximal arm (11) being attached to the support (8) by means of horizontal axis 15 rotation joint and the distal arm (12) attached to the proximal arm (11) by means of horizontal axis articulation.
    d) A lifting work platform (2), with cage type protection bars that are attached to the distal arm (12) by means of horizontal axis rotation articulation. One of the bars (15) is floating allowing its elevation for 20 people access.
    e) A tray (7) located in the frame (3) where the electrically operated oil-hydraulic control unit is located and that supplies oil flow to the oil-hydraulic cylinders (9) and (10) of the arms (11) and (12) , to the oleohydraulic cylinder (13) of the platform (2) and the oleohydraulic cylinder (16) which changes the vertical orientation of the support part (8) in L.
    f) A control box (14) located on the work platform (2) where the controls are located with their oil hydraulic cylinder distribution valves (9) (10) (13) and (16), as well as the key contact that activates the electric motor that moves the hydraulic pump while deactivating the tractor's starting circuit. The emergency switch is also available that disconnects the entire electrical system from the tractor battery.
    g) An inclinometer, which can be of the electric type located anywhere 5 of the work platform (2) oriented vertically.
    h) A level sensor that can be of the electrical type located at the base of the work platform (2) with longitudinal orientation to it.
    权利要求:
    Claims (3)
    [1]
    1. Liftable work platform as an implement that is attached to the front or rear triple tractor farm for the performance of work at height of one or more operators characterized by comprising: 5
    a) A frame (3) that allows its coupling to the front or rear tripuntal of the agricultural tractor
    b) An L-shaped support element (8) attached to the frame (3) by means of vertical axis rotation articulation.
    c) An articulated mechanism with two arms (11) and (12) the proximal arm 10 (11) being connected at one end to the support (8) by means of horizontal axis rotation articulation and on the other, at one of the ends of the distal arm (12) by means of horizontal axis rotation articulation.
    d) A non-skid base work platform (2) with cage-like protection bars, which is attached to the other end of the distal arm (12) 15 by means of horizontal axis rotation articulation.
    e) A tray (7) located in the frame (3) where the electrically operated oil-hydraulic control unit is located and that supplies oil flow to the oil-hydraulic cylinders (9) and (10) of the arms (11) and (12) , to the oleohydraulic cylinder (13) of the work platform (2) and to the oleohydraulic cylinder 20 (16) that changes the vertical orientation of the support piece in L (8).
    f) A control box (14) located on the work platform (2) where the controls and distribution valves of the hydraulic cylinders (9) (10) (13) and (16) are located, as well as the key The contact that activates the electric motor that moves the oil-hydraulic pump while deactivating the starting circuit of the tractor. An emergency button that disconnects the entire electrical system from the tractor's battery work platform.
    g) An inclinometer, which can be of an electric type with alarm located anywhere on the work platform (2) oriented vertically. 30
    h) A level sensor that can be electric located at the base of the work platform (2) with longitudinal orientation to it.

    [2]
    2. Liftable work platform as agricultural implement according to claim 1 whose actuators of the mobile elements (11), (12), (2) and (8) are double-acting oleohydraulic cylinders.

    [3]
    3. Liftable work platform as an agricultural implement according to claims 1 and 2, characterized in that the oil supply to the oleohydraulic cylinders (9) 10 (10) (13) and (16) is carried out by means of an electropump activated oleohydraulic control unit whose electrical energy is taken from the tractor battery (1).

     fifteen
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    同族专利:
    公开号 | 公开日
    ES2638542B1|2018-08-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3534832A|1968-05-08|1970-10-20|Leonard Nesary|Aerial platform structure|
    US4314622A|1980-03-26|1982-02-09|Lindquist William W|Extension boom for tractors having back hoe attachments|
    GB2128555A|1982-10-14|1984-05-02|Simon Eng Dudley Ltd|A vehicle having a demountable work platform|
    US5551527A|1994-10-03|1996-09-03|Luscombe; Terry|Lift device for a three point hitch|CN108401681A|2018-03-09|2018-08-17|重庆大学|Assist type artificial fruit's picker|
    法律状态:
    2018-08-01| FG2A| Definitive protection|Ref document number: 2638542 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180801 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630499A|ES2638542B1|2016-04-20|2016-04-20|Liftable work platform as an implement for agricultural tractors|ES201630499A| ES2638542B1|2016-04-20|2016-04-20|Liftable work platform as an implement for agricultural tractors|
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