Weighted base for a mobile stop device, and mobile stop device
Patent Information
- Application Number
- EP2023736303
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-07-01
- Filing Date
- 2023-06-28
- Publication Date
- 2025-05-07
Smart Images
Figure 1.1
Abstract
Description
[0001] Weight base for a mobile anchoring device, mobile anchoring device
[0002] The invention relates to a weight base for a mobile anchorage device for securing a person at risk of falling. Furthermore, the invention relates to a mobile anchorage device with a weight base according to the invention.
[0003] The preferred field of application of the invention is ceiling formwork systems for producing a ceiling or a ceiling section in concrete construction.
[0004] During the construction of a concrete ceiling or ceiling section using a slab formwork system, it may happen that a person has to work on a fall edge. This person must then be secured using a safety device. Safety devices are known that comprise a rope that is attached to the person being secured on one side and to an anchor point on the other. Mobile anchor devices are known to create such an anchor point. These are freely positioned on the work surface and secured in position by a load.
[0005] DE 20 2011 001 953 U1 provides an example of a load-supported anchorage device comprising a central weight base with an anchor point for a safety rope attached to it. The anchor point is secured by the device's own weight. The central weight base comprises several modularly assembled base or floor weights, which can be containers filled with sand or water. These are distributed across several rows arranged in a star pattern, so that a row is formed by several consecutive base or floor weights.
[0006] A modular design for a weight base has the advantage of being able to be disassembled into individual parts, which are easier to transport. However, the disadvantage is increased assembly effort, as the individual parts must first be assembled on-site, i.e., at the construction site, and possibly filled with sand or water. Furthermore, many individual parts create numerous corners and edges where clothing or parts of the safety device, especially the rope, can get caught. Therefore, many individual parts lined up next to each other pose a safety risk.
[0007] The present invention is concerned with the object of providing a modular weight base for a mobile anchoring device which does not have the disadvantages mentioned above.
[0008] To achieve this object, the weight base having the features of claim 1 and the mobile anchoring device having the features of claim 13 are proposed. Advantageous further developments of the invention can be found in the respective subclaims.
[0009] Disclosure of the invention
[0010] The proposed weight base for a mobile anchorage device for securing a person at risk of falling comprises a base body with several arms arranged at an angle to each other and weights as a load. The weights are accommodated at least partially in the arms, which are designed, at least in part, to be U-shaped, T-shaped, double-T-shaped, or tubular in cross-section.
[0011] In the proposed weight base, the weights are integrated into the base body. This does not mean that the base body encloses the weights on all sides. The weights can also be partially exposed. This is the case, for example, when the arms for holding the weights are U-, T-, or double T-shaped and the weights are inserted into the respective free spaces. By integrating the weights into the arms, the advantages of a modular design can be utilized without the safety risk mentioned above due to a large number of individual parts lined up next to one another. When the weights are integrated into the base body, the base body essentially determines the external dimensions. This means that protruding corners and edges, which pose a safety risk, are avoided.
[0012] Integrating the weights into the base body or the arms of the base body also has the advantage of allowing the weight base to be designed relatively flat. This is because if the weights are placed on or under the arms of the base body, the height of the weights is added to the height of the arms, thus increasing the overall height of the weight base. The flat design, in turn, results in a low center of gravity for the weight base, thus increasing its stability.
[0013] According to a preferred embodiment of the invention, the arms each have a U-shaped, T-shaped, double-T-shaped, or tubular cross-section at one end section, and the weights are accommodated in the arms near the end sections. The weights are therefore arranged eccentrically relative to the center of the weight base. The eccentric arrangement results in a favorable mass distribution, which further increases the stability of the weight base. In the event of a fall, the eccentric arrangement creates a maximally effective ballast lever arm that counteracts the tipping moment.
[0014] The weights are preferably plate-shaped and mounted in the arms as plate packs. This means that each arm of the base body contains several weights combined into a plate pack. The total weight of the weight base can be varied by varying the number of weights in the plate packs mounted in the arms. The plate-shaped design of the weights facilitates the insertion and / or removal of individual weights or plates.
[0015] Preferably, the plate-shaped weights are inserted into the arms in an upright arrangement as plate packs. This upright arrangement facilitates the securing of the weights in the arms, for example, with the help of screw bolts that are threaded through the plate pack perpendicular to the plates. This securing ensures that the weights are securely held in the base body. This is particularly advantageous if the weight base is to be transported to its location using a crane. With the help of the crane, the weight base can be moved as a whole, thus eliminating the need for complex assembly at the location.
[0016] In a further development of the invention, it is therefore proposed that the weights held in the arms are fixed in position in the arms by means of fastening means, for example by means of screw bolts. This measure ensures that no weights can fall out when the weight base is transported, for example with the help of a crane. Falling weights would pose an additional safety risk. If the weights are fixed in the arms with the help of screw bolts, the upright arrangement of the plate-shaped weights ensures that the heads of the screw bolts and the nuts screwed onto the other ends of the screw bolts are located laterally, in particular on the outside on the long sides of the arms and not on their upper sides. The upper sides of the arms can therefore be designed to be largely flat or smooth.
[0017] Advantageously, each arm forms a stop for the weights accommodated in the arm. The stop facilitates the positioning of the weights when inserting, particularly sliding, into the arm. The stop also ensures that any holes in the weights overlap, allowing a fastener, such as a screw bolt, to be inserted into the holes.
[0018] As a further development measure, it is further proposed that the arms have undersides to which eccentrically arranged spacer elements and / or anti-slip bearing bodies made of an elastomer material are attached.
[0019] Using spacers on the underside of the arms, the weight base can be raised above the subfloor. This is particularly advantageous when the subfloor is uneven or when structural elements resting on the subfloor, such as the reinforcement of prefabricated ceilings, need to be bridged. The height of the spacers ensures that the weight base does not rest on the structural elements or reinforcement.
[0020] With the help of bearing elements made of an elastomer material, which can be arranged on the underside of the arms as an alternative or in addition to the spacers, a slip-resistant mounting of the weight base can be achieved. Preferably, at least one bearing element made of an elastomer material is arranged under each arm of the base body, so that the weight base only has contact with the ground via the bearing elements. The bearing elements made of an elastomer material also have a cushioning effect in the event of a fall, as they yield and allow a slight tilting movement of the anchor device.
[0021] If no spacers are required, the bearing bodies are preferably attached directly to the underside of the arms, keeping the center of gravity of the weight base as low as possible. A low center of gravity reduces the tendency to tip over and thus increases the stability of the weight base. If spacers are required, the bearing bodies can be attached to the spacers and indirectly attached to the arms via the spacers. Therefore, the spacers and / or bearing bodies are preferably detachably attached to the underside of the arms.
[0022] Furthermore, it is proposed that the bearing bodies be elongated and have a contact surface that is inclined or spherical in the longitudinal direction of the respective bearing body. In the event of a fall, the inclined or spherical contact surface leads to a type of rolling movement of the bearing body on the ground when the weight base tilts in the longitudinal direction of a bearing body. On damp or wet ground, this has the effect of displacing the moisture or wetness present between the bearing body and the ground, preventing reduced friction in the contact area between the bearing body and the ground. The displacement effect thus reduces the risk of the weight base sliding towards the edge on damp or wet ground. As a result, the functional reliability of the mobile anchorage device can be increased.
[0023] To utilize the displacement effect in different tilting directions, it is proposed that several bearing bodies made of an elastomer material be arranged under each arm of the base body, arranged at an angle to one another. The angular arrangement allows the bearing bodies to be aligned in different tilting directions, so that the desired displacement effect can be achieved during each tilting event through the rolling movement over at least one bearing body. Since, during a tilting event, the weight base tends to tilt in a direction that coincides either with the longitudinal axis of an arm or with the angle bisector between the longitudinal axes of two adjacent arms, the angular distances between the arms determine the preferred tilting directions.
[0024] If spacers are used to raise or support the weight base, they are preferably height-adjustable. For example, spindle feet or telescopic support legs can be used as spacers. Alternatively or additionally, it is proposed that the spacers be made of rectangular tubes. These are particularly easy to manufacture and have flat outer surfaces for contact with the arms and for receiving the bearing bodies. Furthermore, the spacers are preferably detachably attachable to the arms via both their short side and their long side. To adjust the height, the spacers can then be rotated 90° around their central longitudinal axis, so that either the short side or the long side determines the height adjustment.According to a preferred embodiment of the invention, the arms each form a surface on their underside that slopes towards the end, so that the distance of an arm from the ground increases towards the end. If the bearing bodies are directly or indirectly attached in the area of these slopes, the slope supports the rolling over the contact surface of the respective bearing body, which is preferably sloped or spherical in the tilting direction, during a tilting movement. The slope can thus further increase the displacement effect. The sloped surface on the underside of an arm can, for example, be formed by a base plate that runs at a slope or is angled at the end.
[0025] Advantageously, the arms are designed with stepped undersides, so that the distance between the base and the ground is greater in the center than in the area of the arms' end sections. A lifting device, such as a pallet truck, can then be inserted in the center to relocate the weight base.
[0026] Furthermore, it is proposed that the base body incorporate transport aids, for example, in the form of crane eyes. The crane eyes can be designed as recesses in the base body, preferably as end-side recesses in the arms of the base body. In this case, each arm of the base body can be connected with a rope, thus achieving good mass distribution when transporting the weight base with the aid of a crane.
[0027] Alternatively or additionally, it is proposed that the base body form stacking aids, for example in the form of tabs and corresponding recesses. The tabs and recesses are preferably provided on opposite sides of the base body, so that when two base bodies are stacked on top of each other, the tabs of one base body engage in the recesses of the other base body and create a positive connection that prevents any relative movement of the two base bodies.
[0028] The base body of a weight base according to the invention preferably has at least three, preferably at least four, arms. The stability increases with the number of arms. Furthermore, the arms are preferably arranged in a common plane and / or at the same angular distance from one another. If the arms are arranged in one plane, the base body can be designed very flat, which promotes a low center of gravity. Furthermore, the upper side of the base body can be designed flat, so that neither clothing nor parts of the safety device can get caught. If the arms are arranged at the same angular distance from one another, the tendency to tip over is also the same across all arms.
[0029] Furthermore, the base body preferably has a central section with receptacles for connecting means of an anchor element with a mast for attaching a safety device, in particular a rope. The central section or sections can be designed as a separate part or as a single piece with the base body. The central arrangement of the anchor element including the mast also contributes to ensuring that the tendency to tip over is the same, in particular equally low, in all directions. Furthermore, depending on the design of the connecting means, a detachable connection between the anchor element and the weight base can be established via the receptacles in the central section. The detachable connection has the advantage that, after the anchor element has been removed, several weight bases can be stacked on top of one another, which simplifies the transport and / or storage of the weight base.
[0030] Furthermore, a mobile anchoring device for a safety device is proposed, which comprises a weight base according to the invention and an anchor element connected to the weight base with a mast for attaching the safety device, in particular a rope. The anchor element is preferably detachably connected to the weight base so that it can be removed if necessary, for example during transport and / or storage of the weight base. The connection is preferably made in the region of a central part of the base body of the weight base so that the anchor element, including the mast, is arranged centrally with respect to the base body. The arms then form cantilevers, via which the mobile anchoring device can be optimally supported in the event of a fall.
[0031] The anchor element preferably has mechanical connecting means for detachably connecting it to the weight base. For example, mechanical connecting means can be provided in the form of claws. The claws are preferably arranged movably so that they can be brought into locking engagement with recesses in the base body of the weight base. Alternatively, mechanical connecting means in the form of screws are provided, by means of which the anchor element is or can be screwed to the base body.
[0032] As already mentioned, the mast is preferably positioned centrally with respect to the weight base. This means that the attachment point is located centrally above the weight base. Alternatively or additionally, it is proposed that the mast be designed as a telescopic tube. This allows the height of the attachment point to be adjusted as needed. This may be necessary, for example, if spacers are arranged on the underside of the base body so that it is raised. At the same time, the center of gravity of the weight base is raised, increasing the tendency to tip over and the tipping moment. This disadvantage can be largely compensated for by reducing the mast height or by lowering the attachment point.
[0033] Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings. These show:
[0034] Fig. 1 is a perspective view of a mobile anchoring device according to the invention with an anchor element for a safety device,
[0035] Fig. 2 a bottom view of the anchor device of Figure 1 including anchor element,
[0036] Fig. 3 is a perspective view of an arm of a weight base of the stop device of Figure 1,
[0037] Fig. 4 is a sectional view through the arm of Figure 3,
[0038] Fig. 5 is a bottom view of the arm of Figure 3,
[0039] Fig. 6 is a perspective view of the stop device of Figure 1 including anchor element during a tilting movement,
[0040] Fig. 7 is a bottom view of the weight base of the anchor device of Figure 1,
[0041] Fig. 8 is a plan view of the mobile anchoring device of Figure 1 including anchor element,
[0042] Fig. 9 is a perspective view of the anchor element of Figure 1,
[0043] Fig. 10 is a perspective view of the anchoring device of Figure 1 including anchor element on a lifting truck,
[0044] Fig. 11 is a perspective view of a spacer element, Fig. 12 is a perspective view of the weight base of the stop device of the
[0045] Figure 1 with spacer elements in a first preferred arrangement,
[0046] Fig. 13 is a perspective view of the weight base of the stop device of Figure 1 with spacer elements in a second preferred arrangement,
[0047] Fig. 14 is a perspective view of the mobile anchoring device of Figure 12 on a prefabricated ceiling and
[0048] Fig. 15 different arrangement possibilities of the mobile anchoring device of Figure 12 on prefabricated ceilings.
[0049] Detailed description of the drawings
[0050] The mobile anchorage device 1 shown in Figure 1 comprises a weight base 10 and an anchor element 20. The anchor element 20 comprises a central mast 21, on which an attachment point 23 for a safety device, in particular for a rope, is formed. At the other end, the anchor element 20 has connecting means 22, via which the anchor element 20 is detachably connected to the weight base 10.
[0051] The weight base 10 comprises a base body 100 with four arms 110 as cantilevers. The arms 110 are each tubular in their end sections, i.e., at their free ends, to accommodate weights 120. The weights 120 are integrated into the arms 110 in the area of the end sections. This results in an eccentric arrangement of the weights 120 and, consequently, in a particularly favorable mass distribution.
[0052] The base body 100 is mounted on bearing bodies 130 made of an elastomer material, which have an anti-slip effect. The bearing bodies 130 are arranged below the arms 110 at their free ends, so that the load of the weights 120 rests on the bearing bodies 130. On the upper side, the arms 110 have recesses which, together with recesses in the weights 120, form crane eyes 114. In the area of the crane eyes 114, the weight base 10 or the mobile attachment device 1 can be connected to a 4-leg crane sling. On the upper side, the arms 110 also form tabs 112 that serve as stacking aids. When the weight bases 10 are stacked on top of each other, the tabs 112 of the lower weight base 10 engage in corresponding recesses 113 of the weight base 10 above. Relative movement of the weight bases 10 to each other is thus blocked.
[0053] The arms 110 of the weight base 10 shown in Figure 1 converge in a central part 150, which has receptacles 151 for the connecting means 22 of the anchor element 20 for releasable connection to the base body 100. The connecting means 22 are in the form of claws, which are inserted into the receptacles 151 of the central part 150 for releasable connection to the base body 100 and brought into locking engagement with the base body 100 (see Figures 2, 10, and 11). The central part 150 also forms four tensioning strap receptacles 152, each of which is arranged laterally on the central part 150 between two arms 110.
[0054] The weights 120 accommodated in the arms 110 are plate-shaped, with several plate-shaped weights 120 each forming a plate pack accommodated in an arm 110. The individual plate-shaped weights 120 are arranged upright. The weights 120 can thus be inserted individually or as a plate pack into the tubular end sections of the arms 110. Insertion preferably takes place from the inside outwards, since - as can be seen in particular from Figures 3 and 4 - the arms 110 have undersides 111 that slope towards the end or form sloped surfaces 116. The sloped surfaces 116 are formed in this case by angled base plates 115. Each base plate 115 simultaneously forms a stop 122 for the plate-shaped weights 120, so that the end position of the weights 120 is predetermined via the stop 122.This facilitates the insertion of screw bolts 121, by means of which the weights 120 are fixed in the arms 110. Since the weights 120 are held upright in the arms 110, the screw bolts 121 can be arranged transversely thereto, so that their heads and the nuts screwed on at the other ends each lie laterally on the arms 110.
[0055] The bearing bodies 130 are also arranged in the area of the angled base plates 115. As can be seen in particular from Figure 5, several bearing bodies 130 are arranged on the underside 111 of each arm 110. These are each elongated and arranged at an angle to one another. In the area of the inclined surface 116, each arm 110 has three bearing bodies 130. A first bearing body 130 is arranged centrally below the arm 110 and oriented in the longitudinal direction of the arm 110. The central bearing body 130 is flanked by two further bearing bodies 130, each of which is arranged at the same angular distance a from the first bearing body 130. The angular distance a - measured between the longitudinal axes of the bearing bodies 130 - is 45° in this case. The three bearing bodies 130 each have a contact surface 131 which is spherically shaped in the longitudinal direction of the bearing bodies 130 (see in particular Figures 3 and 4).Outside the inclined surface 116, a further bearing body 130' is fastened to the base plate 115, which is aligned transversely to the longitudinal direction of the arm 110 and has a flat contact surface 131' (see in particular Figures 3 and 4).
[0056] In the event of a fall, a tensile force F acts on the anchor point 23, causing a tipping moment such that the weight base 10 executes a tipping movement (see Figure 6). The weight base 10 then rolls over at least one bearing body 130 with a spherically shaped contact surface 131. On a damp or wet surface, this rolling movement creates a displacement effect that prevents the formation of a moisture film between the bearing body 130 and the surface, which reduces friction. This reduces the risk of the weight base 10 sliding on a moisture film towards the edge of the fall. The arrangement of the bearing bodies 130 in the area of the inclined surfaces 116 further enhances the displacement effect.
[0057] If the weight base 10 does not perform a tilting movement, it rests essentially on the four bearing bodies 130', whose contact surfaces 131' are flat.
[0058] Figures 7 to 9 show the anchor element 20 and its connecting means 22, via which the anchor element 20 is detachably connected to the base body 100. The connecting means 22, designed as claws, are inserted into the receptacles 151 of the central part 150 and brought into locking engagement with the base body 100. At least one claw is designed to be movable, in particular pivotable, for this purpose.
[0059] The undersides 111 of the arms 110 are stepped, so that further inside, the distance of the base body 100 from the ground is greater than in the area of the end sections of the arms 110 that accommodate the weights 120. This free space can be used - as shown by way of example in Figure 10 - to accommodate a lifting device 2. With the aid of the lifting device 2, the weight base 10 or the mobile anchor device 1 can be easily relocated.
[0060] The low height of the illustrated weight base 10 contributes to a low center of gravity, which increases the stability of the weight base 10. However, if the weight base 10 or the mobile anchoring device 1 is to be used on a thin concrete layer of a prefabricated ceiling 3 with overlying reinforcement 4 (see Figure 14), the low height of the weight base 10 can be a disadvantage. To remedy this, the weight base 10 can be combined with spacer elements 140, which are attached to the underside 111 of the arms 110, so that the weight base 10 is raised.
[0061] As shown by way of example in Figure 11, the spacer elements 140 can be made of rectangular tubes with a short side 141 and a long side 142. For height adjustment, the spacer elements 140 can then be connected to the arms 110 either via their long side 142 (see Figure 12) or via their short side 141 (see Figure 13). Two different heights can thus be set. The spacer elements 140 can be fastened, for example, using screws, so that the fastening is detachable. The inclined surface 116 of the angled base plate 115 preferably serves as the contact surface. If bearing bodies 130 are arranged there, they are dismantled beforehand. The dismantled bearing bodies 130 can then be fastened to the spacer elements 140 so that they are indirectly fastened to the arms 110 of the weight base 10 via the spacer elements 140.In this way, the displacement effect caused by the bearing bodies 130 can continue to be used.
[0062] Since not only the height of the reinforcement 4 can vary, but also the spacing of the lattice girders typically used as reinforcement 4, a position can always be found by changing the angular position of the weight base 10 with respect to the substructure in which the spacer elements 140 can be placed between two lattice girders on the thin concrete layer of the prefabricated ceiling 3. A variety of different angular positions with different spacings of the reinforcement 4 can be seen in Figure 15.
[0063] List of reference symbols
[0064] 1 stop device
[0065] 2 lifting device
[0066] 3 Prefabricated element ceiling
[0067] 4 Reinforcement
[0068] 10 weight bases
[0069] 20 anchor element
[0070] 21 masts
[0071] 22 connecting devices
[0072] 23 Anchor point
[0073] 100 basic bodies
[0074] 110 Arm
[0075] 111 subpage
[0076] 112 tab
[0077] 113 Recess
[0078] 114 crane eye
[0079] 115 floor panel
[0080] 116 area
[0081] 120 weight
[0082] 121 screw bolts
[0083] 122 stop
[0084] 130 bearing bodies
[0085] 131 contact area
[0086] 140 spacer element
[0087] 141 short side 142 long side
[0088] 150 middle section
[0089] 151 Holder 152 Tension belt holder
Claims
Patent claims 1. Weight base (10) for a mobile anchoring device (1) for securing a person at risk of falling, comprising a base body (100) with a plurality of arms (110) arranged at an angle to one another and weights (120) as a load, wherein the weights (120) are accommodated at least in sections in the arms (110), which for this purpose are designed at least in sections to be U-shaped, T-shaped, double-T-shaped or tubular in cross-section.
2. Weight base (10) according to claim 1, characterized in that the arms (110) are each U-shaped, T-shaped, double-T-shaped or tubular in cross section in an end section and the weights (120) are received in the arms (110) in the region of the end sections.
3. Weight base (10) according to claim 1 or 2, characterized in that the weights (120) are plate-shaped and are accommodated in the arms (110) as plate packs, preferably in an upright arrangement.
4. Weight base (10) according to one of the preceding claims, characterized in that the weights (120) accommodated in the arms (110) are fixed in position in the arms (110) by means of fastening means (121), for example by means of screw bolts.
5. Weight base (10) according to one of the preceding claims, characterized in that each arm (110) forms a stop (122) for the weights (120) accommodated in the arm (110).
6. Weight base (10) according to one of the preceding claims, characterized in that the arms (110) have undersides (111) to which eccentrically arranged spacer elements (140) and / or anti-slip bearing bodies (130) made of an elastomer material are fastened, preferably detachably fastened.
7. Weight base (10) according to claim 6, characterized in that the bearing bodies (130) are elongated and have a contact surface (131) which is inclined or spherical in the longitudinal direction of the respective bearing body (130).
8. Weight base (10) according to claim 6 or 7, characterized in that the spacer elements (140) are height-adjustable and / or are made of rectangular tubes, which are preferably detachably attachable to the arms (110) via both their short side (141) and their long side (142).
9. Weight base (10) according to one of claims 6 to 8, characterized in that the arms (110) each form a surface (116) on their undersides (111) which runs obliquely towards the end, so that the distance of an arm (110) from the ground increases towards the end.
10. Weight base (10) according to one of the preceding claims, characterized in that the base body (100) forms transport aids, for example in the form of crane eyes (114), and / or stacking aids, for example in the form of tabs (112) and corresponding recesses (113).
11. Weight base (10) according to one of the preceding claims, characterized in that the base body (100) has at least four arms (110), which are preferably arranged in a common plane and / or at the same angular distance from one another.
12. Weight base (10) according to one of the preceding claims, characterized in that the base body (100) has a central part with receptacles (151) for connecting means (22) of an anchor element (20) with mast (21) for attaching a safety device, in particular a rope.
13. Mobile anchoring device (1) for a safety device, comprising a weight base (10) according to one of the preceding claims and an anchor element (20) connected, preferably detachably connected, to the weight base (10) with a mast (21) for attaching the safety device, in particular a rope.
14. Anchoring device (1) according to claim 13, characterized in that the anchor element (20) comprises mechanical connecting means (22), for example in the form of claws, for detachable connection to the weight base (10).
15. Anchoring device (1) according to claim 13 or 14, characterized in that the mast (21) is arranged centrally with respect to the weight base (10) and / or is designed as a telescopic tube.