• 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:
    In a fall protection device (1) consisting of at least one strut (2, 3) for fixing the device wide construction element, at least two support legs (4, 5) with lower ends (4A, 5A) for the support device on the construction element and with upper ends (4B , SB) which are directly or indirectly connected to an upper end (2B, 3B) of the strut / struts and an anchoring point (7) for a lifeline, two anchoring struts are arranged to diverge generally downwards from the upper ends, is at least one anchor element (20A; 2OB) arranged in connection with the lower ends (2A, 3A) of the anchoring struts and a support beam (6) is arranged, to which the anchoring struts are connected. The upper ends of the support legs are connected to the support beam, separated from the connection of the anchoring struts to the beam and the anchoring point of a lifeline is arranged adjacent to a cantilevered end (6A) of the support beam, which extends past a connecting area (CA1). for the support legs, in a direction away from a connecting area (CA2) for the pre-anchoring struts. An anchor element for anchoring the device to cast concrete slabs of the hollow core type is also provided. (rig. 1)
    公开号:SE1100535A1
    申请号:SE1100535
    申请日:2011-07-15
    公开日:2013-01-16
    发明作者:Kaj Jansson
    申请人:Fallskyddspecialisterna I Heby Ab；
    IPC主号:
    专利说明:

    FR 2843149 A1 and US 6,715,238 each disclose vertical type fall arrest devices, which are generally fall factor "0" devices. These devices comprise a central mast or post with a lower end for attachment to a stationary structure, such as a concrete slab for a building. The upper mast is further connected to the upper ends of a number of support legs which generally surround the central mast and which with the lower ends thereof are brought into supporting engagement with a surface of the building. Due to the central location of the mast, the general geometry of these devices is in many cases insufficient to offer practical fall protection.
    The location of these devices is in practice limited by said geometry, which precludes the provision of practical and safe fall protection near an edge or side of e.g. a concrete slab for a building.
    SUMMARY A general purpose of this invention is to provide improvements in fall protection and to solve the problems discussed above.
    A particular object of the invention is to propose a substantially improved fall protection anchor of the vertical type.
    Another particular object of the invention is to propose an anchor element for securely fixing a fall protection anchor to a construction element.
    These and other objects are achieved by the invention as defined in the appended claims.
    The invention relates generally to a vertical anchorage anchorage having at least one strut for attachment to a structural member, at least two support legs having lower ends for supporting the device and upper ends being directly or indirectly connected to an upper end of said strut and an anchor point. for a lifeline. In a basic configuration, two anchoring struts are arranged generally diverging downwards from the upper ends and at least one anchor element is arranged at the lower ends of the struts. At their upper ends, the two anchoring struts are connected by a support beam. The upper ends of the support legs are likewise connected to the support beam separately from the connection of the anchor rods to the beam. The anchorage point of a lifeline is arranged at a cantilevered end of the support beam, which extends past a connecting area for the support legs, pointing away from a connecting area for the struts. According to another aspect, the invention generally relates to an anchor element for anchoring a fall protection device according to the invention in connection with a cast concrete slab of the hollow core type. In a basic configuration, the anchor element has a basic body supporting a fixed locking lug for engaging a recess in the concrete slab, a movable wedge element and a control arm connected to the wedge element.
    The basic anchoring according to the invention has advantages in the form of: - a high level of secure protection which gives a fall factor "0"; - simple and uncomplicated assembly and disassembly practically without tools; - high degree of optional placement and mobility; - high stability and thus safe operation without risk of tipping; and - versatility in terms of uses and anchoring.
    Preferred developments of the basic idea of the invention and embodiments thereof are set out in the dependent subclaims.
    Other than the described advantages of the invention will become apparent upon reading the following detailed description of an embodiment of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention and its further objects and advantages will be best understood by reference to the following description read in conjunction with the accompanying drawings, in which: Fig. 1 is a perspective view of a schematic, exemplary first embodiment of a drawings; mobile fall protection anchor according to the invention; Fig. 2 is a side view of the embodiments of the fall protection anchor according to Fig. 1; Fig. 3 is a partial and partially schematic illustration of an ejection molding of the anchor element according to the invention, for use on the anchor in Figs. 1 and 2; Fig. 4A is a partial side view of a wedge of the arica element of Fig. 3; Fig. 4B is a partial top view of the wedge of Fig. 4A, in a section along the line A-A; Fig. 5A is a front view of a base body of the anchor member of Fig. 3; Fig. SB is a rear view of the base body of the anchor member of Fig. 5A; Fig. SC is a top view of the base body of the anchor member of Figs. 5A and SB; Fig. 6 is a schematic illustration, partly in section, of the function of the anchor element in Fig. 3 in connection with a Standardized, precast concrete slab; and Fig. 7 is a perspective view of an alternative, schematic embodiment of a mobile fall protection driver ring according to the invention.
    DETAILED DESCRIPTION The invention will now be explained with reference to exemplary embodiments of the fall protection or fall protection device according to the invention as well as to the anchor element therefor. These embodiments of the invention are illustrated in the accompanying drawings and relate to a use of the solution according to the invention specifically on a standardized, cast / die type concrete slab (HD / F), with recesses formed therein, which are intended to receive lifting equipment, etc. It should be emphasized that the drawings are for the purpose of describing exemplary embodiments of the invention only and are not intended to limit the invention to details or to any specific field of application thereof. In this context, it should be emphasized that the solution according to the invention can be used for other specific fall protection applications that require e.g. other types of anchor elements suitable for such applications. It is thus to be understood that the invention likewise encompasses the incorporation of such specific, application-related features and any suitable combination of features shown and described herein.
    Referring again to the discussion in the introduction, it has been considered a problem that considerable vertical fall protection devices are either stationary, extremely heavy and fl only with heavy equipment or have very limited versatility with respect to 10 15 20 25 30 5 boats. optional placement and easy surface performance. The invention therefore aims to solve the problems and shortcomings associated with dangerous, conventional vertical type fall protection devices.
    A new approach is proposed to provide a safe, versatile and highly mobile fall protection device for use with conventional personal fall protection equipment, including lifelines and harnesses. The basic idea behind the proposed solution is to achieve a combination of a favorable geometry for the device and safe and stable and yet practical support and anchoring of the device with respect to a construction element. It creates basic conditions to allow a very versatile and easily adjustable placement of a fall protection device.
    Figs. 1 and 2 show an exemplary embodiment of a fall protection device 1 where the basic concept of the invention can be used. The fall protection device 1 consists of anchoring rods 2, 3 for securing the device 1 to a structural or stationary construction element and support legs 4, 5 for supporting the device on the construction element. Normally the device is supported on as well as fixed to the same structural element, in the exemplary case the HD / F-type concrete slab 40 shown in Fig. 6, but in theory the anchoring struts 2, 3 can be anchored to a different structural element than the support legs 4, 5 has contact with.
    Two anchoring rods 2, 3 are arranged generally diverging downwards from interconnected upper ends 2B, 3B and towards mutually spaced lower ends s 2A, 3A. Similarly, two support legs 4, 5 are arranged generally diverging downwards from interconnected upper ends 4B, 5B and towards mutually spaced lower ends 4A, 5A. The upper ends 4B, SB of the support legs 4, 5 are connected to a support beam 6 at a connecting area CA1 for the support legs and the upper ends 2B, 3B of the anchoring struts 2, 3 are connected to the support beam 6 at a connecting area CA2 for the anchoring rods, separated from the connecting area CA1 for the support legs 4, 5. From the separated connecting areas CA1 and CA2, the pair of support legs 4, 5 and the pair of anchor rods 2, 3 are likewise directed so that they mutually diverge downwards towards the lower ends 4A, 5A and 2A, 3A, forming a wide and solid base for the whole device 1.
    One end 6A of the support beam 6 is cantilevered, and extends past the connecting area CA1 of the support legs in a direction away from the connecting arm area CA2 for the anchoring struts. An anchoring point 7 for a lifeline is arranged in connection with said cantilevered end 6A of the support beam 6, and thereby allows placement of the anchoring point 7 in a very advantageous position for use of the device e.g. at the edge of a concrete slab. The opposite end 6B of the support beam 6 can advantageously be placed approximately at the connecting area CA2 for the anchoring struts.
    An anchor element 20A and / or 20B is arranged in connection with the lower end 2A, 3A of at least one of the anchoring rods 2, 3. In some cases it may be sufficient to arrange only a single anchor element 20A. In order to achieve higher safety and stability, it is normally preferred that the two anchoring rods 2, 3 each have an anchor element 20A, 20B arranged at a lower end 2A, 3A thereof for axing the device 1 to a construction element 40. In the embodiment of the anchor element 20A shown in Fig. 3, it comprises a releasable clamping mechanism 22, 24 which serves to clamp resp. release the fall protection device 1 relative to the construction element 40.
    More specifically, in this embodiment the anchor element 20A comprises a base body 24 having a base plate 25 which supports a fixed locking lug 29 for engaging a later, in connection with Fig. 6, described recesses 41, 42 in a concrete plate 40 of the above-mentioned HD / F-type. Arranged at one side of the base plate 25 are two separate fastening plates 27A, 27B which in mounted position branch the lower end 2A of an associated anchoring rod 2 of the fall protection device 1. The anchor element 20A is mounted at the lower end 2A of the anchoring rod 2 e.g. by means of a screw / nut connection 31 and corresponding openings formed through the strut and the mounting plates, as illustrated by bores 32 through the mounting plates 27A, 27B shown in Fig. SC. Attached to the lower ends of the mounting plates 27A, 27B is a support plate 26 which, in the axed or anchored working condition of the fall protection device 1, will engage an upper surface 40A of the structural member 40.
    Attached to the opposite side of the base plate 25 are two separate guide rails 28A, 28B which form a guide 28 intended to slidably guide and support a wedge element 22 of the anchor element 20A.
    The control 28 formed by the spaced guide rails 28A, 28B allows controlled movement of the wedge element 22 in opposite directions WM (Fig. 6) between a lower clamping position fallx the fall protection device 1 at the construction element 40 and an upper release position which allows the fall protection device 1 to be tilted or tilted to a position described below which allows the fall protection device 1 to move thereon. The movable wedge element 22 has a rear wedge plate 22C fitted for controlled movement in a guide groove 28C formed by the guide rails 28A, 28B which are "" undercut "" on opposite sides (see Fig. SC).
    It further comprises an upper plate 22A. Connected to an upper side of the upper plate is a wedge operating arm 21 having an upper angled handle portion 21A shown in Fig. 1. A front plate 22B is arranged to connect free ends of the upper plate 22A and the rear plate 22C and thereby themselves form the sloping wedge surface. Attached to one side of the control arm 21 is a stop member 23 for co-operation with a corresponding hook member 30 which is attached to an upper end of the base plate 25 on the base body 24 of the anchor member 20A to prevent the wedge member 22 from falling downwardly from the guide 28 when released. This hook element 30 likewise forms a stop of movement which cooperates with the upper plate 22A of the wedge 22 to allow the entire fall protection device 1 to be tilted when the wedge element 22 is raised from its lower clamping position and towards the upper release position.
    The function of the anchor elements 20A, 2OB for securing resp. release of the fall protection device 1 will now be briefly described in connection with Fig. 6. As mentioned briefly above, the illustrated anchor element 20A is designed to cooperate with a recess 41, 42 formed in concrete slabs 40 of HD / F type or hollow core type. Such recesses 41, 42 are standardized in the type of precast concrete slab 40 and act as brackets for lifting equipment used to lift the slabs into position on a construction site. When the device 1 is to be fixed to the plate 40, it is moved to a position where the anchor element 20A is aligned with a recess 41, 42 in the plate 40. In this position the wedge operating arm 21 is gripped at its handle portion 21A and lifted up.
    This will bring the wedge 22 to its raised position with its upper plate 22A engaging the hook member 30. The wedge operating arm 21 and thereby the entire device 1 is then lowered to insert the anchor member 20A into the recess 41. The support plate 26 of the anchor element 20A then rests on the upper surface 40A of the plate and the locking lug 29 is placed flush with an inner bulge 42 formed in the recess 41. By continuing the downward movement of the wedge actuator arm 21 and thereby of the wedge 22 itself, the latter will surface the anchor element 20A as a whole to the right in FIG. 6 until the locking lug 29 fully engages the bulge 41 of the recess 41. This securely fixes the anchor element 20A and thereby the entire fall protection device 1 to the plate 40. To release the anchor element 20A from the plate 40, the wedge 22 is simply lifted up by means of the wedge actuator 21, which allows the locking lug 29 to leave the bulge 42 of the recess. In the illustrated exemplary embodiment, support wheel assemblies 8 are provided at the lower ends 4A, 5A of each support leg 4, 5. In combination with the described embodiment of the anchor element 20A , and in particular by means of its control arm 21, this will allow very simple and practical, selective movement of the fall protection device 1.
    The support wheel units 8 each have a support wheel 10 mounted in a wheel suspension rod 9, more specifically at a distal end thereof extending from its coordinated support legs 4, 5 in the same direction as the cantilevered end 6A of the support beam 6. The support wheels 10 are placed at a level above the lower ends 4A, 5A of the support legs 4, 5 in a state when the fall protection device 1 is located at the construction element 40. In other words, the support wheels 10 are arranged above a support surface of these support legs 4, 5 when the device is in its working position, vid xered at and supported on the structural element. It will now be appreciated that the anchor member or members 20A, 20B are released from the structural member by lifting the associated wedge 22. As the wedge is raised even more, its upper plate 22A engages the hook member 30 which in turn causes a slight tilt or inclination of the entire the fall protection device 1. Such a slope brings the support wheels of the support wheel units 8 into contact with an upper surface of the construction element and thus allows simple and convenient movement of the entire fall protection device 1 between working positions.
    As stated above, the general object of the invention is to provide a safe fall protection device with factor "0" and of the vertical type. The device shall provide safe and reliable support and shall be manually easily and quickly anchored to and releasable from a stationary structural member, allowing a very advantageous versatility in any placement near edges, etc. This object is achieved by developing a device having the above said anchor rod and outrigger geometry, and by providing an anchorage for a lifeline at a cantilevered end of a support beam connecting the upper ends of anchor struts and outriggers, the cantilevered end extending past connecting posts for the outriggers. With the addition of the selectively activated support wheels in connection with the ends of the support legs in combination with the manually operated arica elements at the ends of the anchor rods, the device will also easily be able to be manually moved for relocation at optional locations.
    A modified second embodiment of the fall protection device 100 according to the invention will now be briefly described with reference to Fig. 7. In this embodiment, the anchoring struts 10, 20 and 25 are 102, 103 and the support legs 104, 105 as well as those at the lower ends 104A 105 of the support legs 104, 105. The wheel support units 108 and the support beam 106 with cantilevered end 106A and with anchor point 107 are generally identical to corresponding parts of the embodiment in Figs. 1 and 2. The main difference is that in the second embodiment a connecting beam 111 is provided, which connects the anchoring rods. 102, 103 and supports a common anchor element 120. More specifically, the connecting beam 111 shown here is dry-bonded with the spaced lower ends 102A and 103A of the anchoring struts 102, 103 and with the common anchor element 120 arranged in a central area of the connecting beam 111, at a location approximately between its connections to the lower ends of the door anchor rods 102, 103 102A, 103A. The connecting beam 111 which connects the anchoring rods 102, 103 at their lower ends 102A, 103A, acts as a reinforcing and stabilizing rod for the entire fall protection device 100. The central location of the single anchor element 120 further contributes to a fast and convenient handling of the entire fall protection device. 100. In the illustrated embodiment, the single central anchor member 120 has dimensions very similar to those of the anchor members of the first embodiment. An alternative dimensioning of the anchor element may, however, be preferred and indicated by dash-dotted lines in Fig. 7. It includes an extension of the base body and base plate of the anchor element along a main part of the connecting beam 111 in order to further stabilize the door anchor. Preferably, the wedge and its guide rails in this alternative embodiment are dimensioned as in the first embodiment in order to maintain easy and fast handling.
    In alternative, but not specifically shown embodiments of the invention, variations of the various illustrated parts of the units according to the invention may be utilized without departing from the scope of the invention. An example of this is the use of the fall protection device in combination with other types of anchor elements, intended for axing the device and its anchoring struts in other types of construction elements in alternative applications. Likewise, variants of the support wheel units can be used in accordance with the invention, such as individually or jointly adjustable wheel supports or wheel supports adapted for dry surface over different types of surfaces. It should therefore be emphasized that although the invention has been described and shown with particular reference to an application in connection with hollow core or HD / F type concrete slabs, the invention is in no way limited to such applications. The basic principles of the invention 10 10 can be used in connection with other types of precast concrete slabs or even with other types of construction elements.
    The invention has been described in connection with what is now considered to be the most practical and preferred embodiments, but it is to be understood that the invention is not limited to the embodiments shown. It also covers every practical combination of features described and shown herein and is thus intended to cover various modifications and equivalent arrangements that fall within the basic spirit and scope of the appended claims.
    权利要求:
    Claims (9)
    [1]
    A fall protection device (1; 100) with anchor rods (2, 3; 102, 103) for fixing the device to a concrete slab (40), at least two support legs (4, 5; 104, 105) with lower ends (4A , 5A; 104A, 105A) for supporting the device on the concrete slab and with upper ends (4B, 5B; 104B, 105B) connected to an upper end (2B, 3B: 102B, 103B) of said anchoring rod, an anchorable and releasable anchor elements (20A; 20B; 120) adjacent to a lower end (2A, 3A; 102A, 103A) of the anchor rod and an anchor point (7; 107) for a lifeline, characterized by: a. two anchor rods arranged to diverge generally downward from their respective upper ends; b. a support beam (6; 106) to which the upper ends of the anchor rods are connected; c. that the upper ends of the support legs are connected to the support beam, separate from the connection of the anchor rods to the support beam; d. that the anchorage point of a lifeline is arranged adjacent to a cantilevered end (6A; 106A) of the support beam, which extends past a liner connection area (CA1) for the support legs, in a direction away from a liner connection area (CA2) for the anchor rods, forming a vertical type fall protection device; and e. selectively actuatable support wheel assemblies (8; 108) disposed at the lower ends (4A, 5A; 104A, 105A) of the support legs (4, 5; 104, 105) to allow selective movement of the device.
    [2]
    A fall protection device (1) according to claim 1, characterized in that the two anchoring struts (2, 3) each have an anchor element (20A, 20B) arranged at a lower end thereof for attaching the device to the concrete slab (40).
    [3]
    A fall protection device (100) according to claim 1, characterized by a liner connecting beam (111) connecting the anchoring struts (102, 103) and carrying a common anchor element (120).
    [4]
    A fall protection device (100) according to claim 3, characterized in that the common anchor element (120) is arranged in a central area of the connecting beam (III), at a position approximately between its connections with said lower ends (102A, 103A) of the anchor rods (102, 103).
    [5]
    A fall protection device (100) according to claim 3 or 4, characterized in that the connecting beam (111) connects the anchoring rods (102, 103) at their lower ends (102A, 103A), acting as a reinforcing and stabilizing rod.
    [6]
    A fall protection device (1; 100) according to any one or more of claims 1-5, characterized in that the support wheel units (8; 108) comprise support wheels (10; 110) mounted in a wheel suspension rod (9; 109), at a level above the the lower ends (4A, SA; 104A, 105A) of the support legs (4, 5; 104, 105) in a state with the device attached to the concrete slab (40).
    [7]
    A fall protection device (1; 100) according to any one or more of claims 1-6, characterized in that the anchor element (s) (20A, 20B; 120) comprises a releasable clamping mechanism (22, 24) which acts to clamp resp. release the device relative to the concrete slab (40).
    [8]
    An anchor element (20A, 20B; 120) for anchoring a fall protection device (1; 100) according to one or more of claims 1-7 to a cast concrete slab (40) of the hollow deck type or HD fl ï type, characterized by a base body (24 ) which carries a fixed locking lug (29) intended to engage in a recess (41, 42) in the plate, a movable wedge element (22) and an operating arm (21) connected to the wedge element.
    [9]
    An anchor element (20A, 20B; 120) according to claim 8, characterized in that the base body (24) of the anchor element has a guide (28) for slidably guiding and supporting the wedge element (22) for movement in opposite directions (WM) between a lower clamping position fix the device (1; 100) at the concrete slab (40) and an upper release position allowing inclination of the device to a position where the device support wheels (10; 110) are caused to engage the concrete slab to allow for för movement of the device thereon.
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    同族专利:
    公开号 | 公开日
    SE536094C2|2013-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2021-03-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1100535A|SE536094C2|2011-07-15|2011-07-15|Fall protection anchor and anchor elements|SE1100535A| SE536094C2|2011-07-15|2011-07-15|Fall protection anchor and anchor elements|
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