• 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:
    Lightweight fall arrest anchor for two lifelines for installation by means of an expansion plug for two users or two lifelines. The anchor has an elongated shape. It is made of sheet steel folded at a right angle and allows the connection of 2 carabiners in independent housings. The anchor is symmetrical and consists of a fixing base (1) and an anchoring surface (2). The fixing base (1) is in the form of an isosceles obtuse triangle and a single circular hole (3) positioned on the axis of symmetry of the sheet next to the fold line (7). The anchorage surface (2) has two oval anchorage points (4) whose lower part crosses the fold line (7) and may have a central reinforcing rib (5) located on the axis of symmetry (6). The oval anchor points (4) are elongated towards the lateral ends. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2765975A1
    申请号:ES201800277
    申请日:2018-12-11
    公开日:2020-06-11
    发明作者:Sanz Pablo Gomez
    申请人:Sanz Pablo Gomez；
    IPC主号:
    专利说明:

    [0001] Light fall arrest anchor for two lifelines.
    [0002] Sector of the art in which the invention falls
    [0003] The present invention refers to a fall arrest anchor for the installation of lifelines and other personal protective equipment for work at height.
    [0004] State of the art
    [0005] Various patents and utility models of lifeline anchors are currently known.
    [0006] Document ES 1068 470 U proposes an anchor for attaching construction safety elements.
    [0007] This invention has the drawback of the difficulty of passing the ends of the rod through two opposite holes in the box that houses it. Likewise, it is difficult to ensure the position of the rod with respect to the box before the concrete sets, being necessary to tie the rod to the concrete reinforcement.
    [0008] In European patent E 10175500 a system is presented that requires two expansion anchor plugs instead of one.
    [0009] Document ES 2311 310 B1 presents a system that leaves a metallic part of the anchor lost, which is expensive.
    [0010] Due to the aforementioned, an economic and simple system for the placement of lifelines and anchor point for harness in concrete is still necessary.
    [0011] Explanation of the invention
    [0012] There are currently two types of folded sheet metal fall arresters in general use in construction:
    [0013] 1- Anchors that need two or more expansion plugs to fix to the concrete and prevent it from turning when they receive the impact force of a fall.
    [0014] 2- Light and cheap anchors that require a single expansion plug, valid only for efforts in one direction, but not for efforts in opposite or perpendicular directions or for more than one user.
    [0015] The anchorage object of the invention improves the performance of the folded sheet metal fall arresters since it is valid for two or more workers and for two opposite directions. In addition, you only need one expansion plug for placement, this aspect being very useful when installing several consecutive lifelines since the cost of anchors, drilling and expansion plugs to be used can be halved.
    [0016] The anchor is made up of a symmetrical sheet of stainless or galvanized steel bent 90 ° along one or two folding lines (7) that separate its two main parts: a fixing base (1) and an anchoring surface (2 ).
    [0017] The anchoring surface (2) has the function of housing the carabiners that will connect the fall protection equipment. This surface is perpendicular to the fixing base (1) and It has two oval anchor points (4) for connecting carabiners independently. The oval anchor points (4) are top surrounded by an arc shaped
    [0019] The size of the oval anchor points is large enough to facilitate the placement of the carabiners and to allow them to rotate without interference.
    [0021] The fixing base (1) is intended for the connection with the concrete surface and has a circular hole (3) located on the axis of symmetry (6) in which an expansion anchor plug with nut and washer will be housed.
    [0023] The fixing base (1) is in the form of an isosceles obtuse triangle with the aim of giving the anchor an elongated shape that limits the torque by forces applied in a preferred direction of use coinciding with the direction of the connected lifelines. In addition, this elongated shape provided by the triangular shape of the base, favors the separation of the carabiners once they are placed in the anchor points and allows to reduce the weight and cost of the anchor with respect to rectangular support bases or other geometries.
    [0025] The obtuse triangle-shaped base has the circular hole (3) preferably in a location close to the anchoring surface (2) in order to decrease the torque of the anchor when parallel forces are applied to the anchoring surface (2 ) and to limit the lever effect when subjected to perpendicular forces to the surface.
    [0027] Brief description of the drawings
    [0029] Figure 1 shows the plan, elevation and profile views of a lightweight fall arrest anchor for two lifelines. The oval anchor points (4) in this case are joined to the anchor surface (2) by a central rib of the reinforcement (5).
    [0031] Figure 2 shows the flat development of a steel sheet to form a light fall arrest anchor for two lifelines by bending at 90 ° through a folding line (7).
    [0032] Figure 3 represents the assembly of two consecutive lifelines aligned in the ideal working direction, which are connected by carabiners to the two oval anchor points (4) and as the necessary tension for the assembly of the two consecutive lifelines. it is counteracted in the anchorage. The carabiners are supported in the preferred contact area (8) of the oval anchor points (4).
    [0034] Figure 4 shows the distribution of forces on the central reinforcing rib (5) and its contribution to improving the strength of the anchor against bending at its central part. It is also observed how the geometry of the anchor prevents a lever effect from occurring in the central area that favors the removal of the anchor block or its breakage.
    [0036] Figure 5 shows the use of sheet metal for anchors that have the curvature of the fixing base (1) coinciding with the upper outer curvature of the oval anchor points (4).
    [0038] Figure 6 shows a lightweight fall arrest anchor for two lifelines that has two fold lines (7) and that has the two preferred contact points (8) aligned with the circular hole (3). In this case, the oval anchor points (4) are not joined by a central reinforcing rib (5), being independent at the top of the anchor.
    [0039] Detailed exposition of an embodiment
    [0041] The assembly of the anchor will be carried out by drilling a flat concrete surface and later fixing it with a single expansion plug.
    [0043] The preferred use of this anchor corresponds to the connection of two carabiners for mounting two independent lifelines, parallel to the concrete surface, aligned and consecutive (ideal positioning and working direction), the carabiners each being housed in a oval anchorage point (4) independently, in such a way that the carabiners can rotate freely without possible friction between them that open or damage their threading and opening systems, as indicated in the regulations for the use of this type of connectors with closing thread. Furthermore, this mounting configuration of facing lifelines allows the forces exerted by the lifelines once tensioned to counteract each other, minimizing the constant load supported by the anchor and therefore reducing the total force on the anchor and the expansion plug. in case of impact.
    [0045] The geometry of the anchor, with an elongated shape and a circular hole (3) in the axis of symmetry (6), provide the advantage that under stress perpendicular to the surface there will never be a lever effect on the nut of union that overloads the anchor plug or causes its failure by extraction.
    [0047] The oval anchor points (4) have a preferred contact point (8) that is located at the lateral ends, on the folding line (7), in such a way that the carabiner will automatically position itself on it when the carabiner supports applied forces in an ideal working direction.
    [0049] A preferred embodiment is one that has a single fold line (7). In this case, the "C" -shaped arches that superiorly delimit the oval anchor points (4) are joined in their upper and central part, forming a central reinforcing rib (5). The central reinforcing rib (5) It is located on the axis of symmetry (6) and may have a small centrally positioned V-shaped indentation to lighten the anchor.
    [0051] An advantage provided by the geometry of this type of anchor is that the central reinforcing rib (5), in combination with the resistance provided by the folding of the anchor, prevents double anchoring by the base in its area close to the circular hole ( 3) when the anchor is subjected to forces perpendicular to the fixing base (1).
    [0053] Another advantage provided by the central reinforcing rib (5) is an extra resistance to bending when perpendicular forces are applied to the anchoring surface, since it is necessary to jointly unfold the entire anchor through three fold zones.
    [0055] Taking into account the two previous points, it is concluded that the anchorage is very resistant against possible efforts in all directions.
    [0057] A second embodiment is an anchor that has two folding lines (7) coincident with the equal sides of the isosceles obtuse triangle of the fixing base (1), in such a way that the preferred contact points (8) are aligned ( or almost aligned) with the circular hole (3). This embodiment has the advantage that the tendency of the anchor to rotate is completely nullified when the forces are applied in the ideal working direction because there is no torque.
    [0059] In all cases the equal sides of the isosceles triangle that form the fixing base (1) may be curved towards the inside of it, the radius of curvature of the sides being matching top and bottom, in order to save material, especially when manufactured with a progressive sheet metal cutting and folding die as shown in figure 5.
    [0060] In all cases, the oval anchor points (4) can have a curvature adapted to that of a carabiner at the preferred contact point (8), so that the contact surface of the carabiner will be greater.
    [0062] In all cases, the anchor may have protrusions (9) on the underside of the fixing base (1), preferably next to the circular hole (3) to increase the friction force, avoiding the rotation of the anchor when it supports forces in a perpendicular direction. to its longitudinal direction. Said projections (9) can be constituted by deformations of the sheet manufactured with a press by means of a punch.
    [0064] In all cases, the oval anchor points (4) may be slightly above the crease line, coincide with the crease line or, in a preferred case, occupy a small part of the anchorage surface (1) in its area next to the folding line to facilitate the positioning of the carabiner at the anchor point. Figure 2 shows a sheet in flat development that has the fold line (7) above the bottom of the oval anchor points (4), so that once folded it will have part of the anchor points oval (4) occupying a small area of the anchoring surface (2). This feature will make it possible to manufacture smaller and lighter anchors since the oval anchor points (4) may have a lower height and will avoid hooking the anchor with the carabiners.
    权利要求:
    Claims (6)
    [1]
    1 Light fall arrest anchor for two lifelines characterized by comprising a base for fixing (1) to the concrete and a symmetrical anchoring surface (2) with an elongated shape. The fixing base (1) has a shape similar to an isosceles obtuse triangle with rounded corners and has a unique circular hole (3) adapted to the diameter of an expansion fixing plug, positioned on the axis of symmetry (6), close to the anchoring surface (2). The anchoring surface (2) is folded perpendicularly to the fixing base (1) along one or two folding lines (7) and has two oval anchoring points (4) whose lower part reaches the base of fixing (2) and whose upper part has the shape of a curved arc in the shape of a "C". The oval anchor points (4) are elongated towards the lateral ends and have a preferred contact point (8) with an adapted radius of curvature to the radius of a carabiner on the fold line (7) at the lateral ends of the anchor.
    [2]
    2. - Light fall arrest anchor for two lifelines according to claim 1, characterized in that it has a single folding line (7) located on the long side of the obtuse isosceles triangle and a central reinforcing rib (5) on the anchorage surface (2 ), located on the axis of symmetry (6), which joins the upper and central part of the two oval anchor points (4).
    [3]
    3. - Light fall arrest anchor for two lifelines according to claim 1 characterized in that it has two folding lines (7) coinciding with the equal sides of the isosceles obtuse triangle of the fixing base (1) in such a way that the oval anchor points (4) have the two preferred contact points (8) aligned with the circular hole (3), the two oval anchor points (4) being independent of each other on the anchor surface (2).
    [4]
    4. - Light fall arrest anchor for two lifelines according to previous claims, characterized in that the equal sides of the isosceles triangle that form the fixing base (1) have a rounded shape towards the inside, their curvature coinciding with the curvature of the points oval anchor in its upper external area.
    [5]
    5. - Light fall arrest anchor for two lifelines according to previous claims, characterized in that it has projections (9) on the underside of the fixing base (1) next to the circular hole (3).
    [6]
    6. - Light fall arrest anchor for two lifelines according to previous claims, characterized in that the oval anchor points occupy part of the anchorage surface (1) in its area close to the fold line.
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    同族专利:
    公开号 | 公开日
    ES2765975B2|2021-04-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20030111293A1|2001-12-13|2003-06-19|Desjardins Marc J.|Fall arrest system with flow-through intermediate support|
    US20090032661A1|2007-08-02|2009-02-05|Luc Letourneau|Assembly for attaching a securing line to a roof beam structure|
    AU2011100284A4|2011-03-15|2011-04-21|Complete Height Safety|Roof Anchor Point|
    WO2016176721A1|2015-05-05|2016-11-10|H2Flo Pty Ltd|An anchor|
    US20170268243A1|2016-03-16|2017-09-21|Werner Co.|Monolithic roof anchor|
    法律状态:
    2020-06-11| BA2A| Patent application published|Ref document number: 2765975 Country of ref document: ES Kind code of ref document: A1 Effective date: 20200611 |
    2021-04-08| FG2A| Definitive protection|Ref document number: 2765975 Country of ref document: ES Kind code of ref document: B2 Effective date: 20210408 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201800277A|ES2765975B2|2018-12-11|2018-12-11|Lightweight fall arrest anchor for two lifelines|ES201800277A| ES2765975B2|2018-12-11|2018-12-11|Lightweight fall arrest anchor for two lifelines|
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