Anti-lifting system, floor component, scaffold and use

Abstract

An anti-lift system for a floor part of a scaffold, the anti-lift system comprising: an end part provided with one or more hook elements with which the floor part can be hooked to a transverse crossbar of the scaffold so as to be supported thereon, where the hook elements define a crossbar receiving space for the transverse crossbar; and a rigid latch coupleable with the end piece, the latch being movable relative to the end piece along a latch movement path in a coupled state between a release position and a locked position wherein the latch extends along the crossbar receiving space to block movement of the received crossbar away from the crossbar receiving space, wherein the latch extends less or not along the crossbar receiving space in the release position to release movement of the received crossbar away from the crossbar receiving space. The system is configured to automatically move the latch to the locked position when the latch is between the locked position and the released position. The resistance element can stabilize the release position.

Description

Technical Field

[0001] The present invention relates to an anti-lifting system for a bottom plate component of a scaffold, a bottom plate component provided with the anti-lifting system, a scaffold provided with the bottom plate component and a use thereof. Background Art

[0002] Anti-lift systems for floor members of scaffolding are known in various forms, for example from WO 00 / 61891 A1. Anti-lift systems are typically configured to resist unintentional removal of the floor member from the scaffolding, particularly due to upward wind forces to which the floor member is exposed.

[0003] There is a constant need to further improve such systems, in particular reliable anti-lift protection combined with a high degree of ease of use and durability is desired.

[0004] GB 2 127 086 A and FR 2 781 534 A1 disclose systems according to the preamble of claim 1 . Summary of the Invention

[0005] The object of the present invention is to improve the anti-lift protection for floor elements of scaffolding, in particular with regard to the reliability, ease of use, and / or durability of the protection. The object is to at least partially remedy one or more disadvantages of known systems, in particular while maintaining the advantages provided. The object is to provide at least one alternative anti-lift system.

[0006] To this end, according to one aspect, an anti-lift system for a base member of a scaffold is provided according to claim 1. The anti-lift system, also referred to herein simply as the "system," comprises an end member configured to form a longitudinal end of a base member for a scaffold. The end member is provided with one or more hook elements, with which the base member can be hooked at its longitudinal end to a transverse crossbar of the scaffold so as to be supported on the transverse crossbar. The hook elements define crossbar receiving spaces for the transverse crossbars. When the base member is hooked to the transverse crossbars using the hook elements, the transverse crossbars are received in the crossbar receiving spaces. Such hook elements are known per se for base members of scaffolds.

[0007] The system includes a rigid latch capable of being coupled to the end member, the latch being movable relative to the end member along a latch motion path between a release position and a locked position. In the locked position, the latch extends along the crossbar receiving space to block movement of a received transverse crossbar out of the crossbar receiving space. In the release position, the latch extends less or not along the crossbar receiving space to release movement of the received transverse crossbar out of the crossbar receiving space.

[0008] The anti-lift system is configured to automatically move the latch to the locked position in the coupled state when the latch is located between the locked position and the released position, at least when the transverse crossbar is received in the crossbar receiving space.

[0009] Thus, automatically moving the latch to the locked position eliminates the possibility that the latch is inadvertently and / or unnoticedly held in an intermediate position between the locked position and the released position when the transverse crossbar is received in the crossbar receiving space. Such an intermediate position could otherwise result in insufficient or at least reduced protection against lifting. A further advantage is that, in this manner, the user only needs to slightly displace the latch from its released position in order for it to reach the locked position.

[0010] Making the latch automatically move to the locked position can be driven in various ways, for example, by driving towards the biasing of the locked position. In a particularly stable embodiment, making the latch automatically move to the locked position is driven by the weight of the latch itself, as further explained in the specific embodiment.

[0011] Another aspect provides a floor member for a scaffold, the floor member being provided with at least one anti-lift system as described herein, wherein the end member of each anti-lift system forms a respective longitudinal end of the floor member.

[0012] Another aspect provides a scaffold provided with a floor part as described herein, wherein the floor part is hooked at a longitudinal end to a corresponding transverse rail of the scaffold with hook elements such that the transverse rail is received in the rail receiving space.

[0013] With such a floor part and such a scaffold, the advantages mentioned above can be achieved.

[0014] On the other hand, there is provided a use of an anti-lifting system as described herein, which is used for anti-lifting protection of a base plate component, wherein the base plate component is hooked to a transverse crossbar of a scaffold using a hook element at the longitudinal end of the base plate component, so that the transverse crossbar is received in the crossbar receiving space, wherein a latch is coupled to the end component and, when the latch is between a locked position and a released position, the latch automatically moves to the locked position.

[0015] This use provides the advantages mentioned above.

[0016] Optional further advantageous developments of the invention are provided by the features of the dependent claims, as further explained in the detailed description given below. DETAILED DESCRIPTION

[0017] In the following, the present invention will be further explained based on examples of embodiment and drawings. The drawings are schematic and show only examples. In the drawings, corresponding elements are indicated by corresponding reference numerals. In the drawings:

[0018] Figure 1 shows a cutaway front view of a scaffold having a floor member with an anti-lift system;

[0019] Figures 2A to 2B Each shows a cross-sectional front view of the anti-lift system with the latch in the coupled state, wherein Figure 2A The latch in the Figure 2B The latch in the release position;

[0020] Figures 3A to 3B Each shows Figures 2A to 2B A perspective view of the latch of the system in a corresponding position;

[0021] Figures 4A to 4B Each shows Figures 2A to 2B Another perspective view of the latch of the system is located in a corresponding position;

[0022] 5A to 5D Each shows Figures 2A to 2B A cross-sectional front view of the system of FIG. 1 showing different successive positions of the latch and the transverse rail as the transverse rail moves into the rail-receiving space;

[0023] Figures 6A to 6B Each shows Figures 2A to 2B A cross-sectional front view of a system of FIG. 1 with different successive positions of the latch when the latch is coupled to the end member;

[0024] Figure 7 Shown Figure 2B details of; and

[0025] Figure 8 Shown according to Figure 7 Details of which, with Figure 7 The latch has been moved slightly upwards in comparison.

[0026] The accompanying drawings illustrate an example of an anti-lift system 2 for a base member 4 of a scaffold 6. The system 2 includes an end member 8 configured to form a longitudinal end 10 of the base member 4 of the scaffold 6. The end member 8 is provided with one or more hook elements 12. The base member 4 can be hooked to a transverse rail 14 of the scaffold 6 at the longitudinal end 10 using the hook elements 12 so as to be supported on the transverse rail 14. The hook elements 12 define rail-receiving spaces 16 for the transverse rail 14. When the base member 4 is hooked to the transverse rail 14 using the hook elements 12, the transverse rail 14 is received in the rail-receiving spaces 16.

[0027] Figure 1 Also shown are two identically constructed floor parts 4 for a scaffold 6 , each of which is provided with two samples of an anti-lift system 2 , wherein the end part 8 of each anti-lift system 2 forms the respective longitudinal end 10 of the respective floor part 4 .

[0028] Figure 1 Also shown is a frame 6 provided with two base parts 4, wherein each base part 4 is hooked at its longitudinal end 10 with its hook element 12 to a corresponding transverse crossbar 14 of the frame 6, so that the transverse crossbar 14 is received in a crossbar receiving space 16. In the example shown, the transverse crossbars 14 located above one another are connected to one another by means of a standard part 40 of the frame 6.

[0029] The system 2 comprises a rigid latch 18 that can be coupled to the end piece 8 and that is movable relative to the end piece 8 along a latch movement path P between a release position and a locking position in the coupled state. Figure 1 、 Figure 2A 、 Figure 3A 、 Figure 4A 、 Figure 5A and Figure 5F The latch 18 is illustrated as an example shown in a locked position. Figure 2B 、 Figure 3B 、 Figure 4B and Figure 7 The latch 18 is illustrated as an example shown in a released position.

[0030] In an embodiment, the latch 18 can be manually operated in the coupled state from both the upper side of the floor part 4 and from the lower side of the floor part 4, in particular manually operated from the release position to the locking position and from the locking position to the release position. Thus, the anti-lifting system 2 can be operated as needed and / or depending on the situation, for example by a user who is located on the floor part 4 itself or on a floor part 4 below it or on the base ground of the scaffold 6.

[0031] In the locked position, the latch 18 extends along the crossbar receiving space 16 to block movement of the received transverse crossbar 14 out of the crossbar receiving space 16. In the released position, the latch 18 extends less or not along the crossbar receiving space 16 to release (unblock) movement of the received transverse crossbar 14 out of the crossbar receiving space 16.

[0032] exist Figures 5B to 5E In FIG. 1 , it can be seen that various intermediate positions of the latch 18 are possible between the locked position and the released position.

[0033] According to claim 1 , the anti-lift system 2 is configured to automatically move the latch 18 to the locked position in the coupled state when the latch 18 is between the locked position and the released position, at least when the transverse crossbar 14 is received in the crossbar receiving space 16 .

[0034] Therefore, during use, when the latch 18 is located between the locking position and the release position, the latch 18 can automatically move to the locking position.Thus, as explained in the summary of the invention above, the anti-lift protection is made more reliable and easier to use.

[0035] In an embodiment, the anti-lift system 2 is configured to automatically move the latch 18 to the locked position under its own weight in a coupled state when the latch 18 is between the locked position and the released position, at least when the transverse crossbar 14 is received in the crossbar receiving space 16 .

[0036] Thus, by virtue of the fact that the orientation of the base part 4 and therefore the relative direction of gravity during normal use is known in advance, the automatic movement of the latch 18 can be achieved in a particularly stable manner. For this purpose, during normal use, the locked position preferably has a lower level than the released position, at least with respect to the center of mass of the latch 18, as can be understood from the example shown.

[0037] As will be apparent, the orientation of latch 18 in the locked position can still differ relative to the released position. In the depicted example, this orientation change is essentially achieved by an opening 24, particularly in combination with another opening 22, through which latch 18 extends and whose lower side serves as a guide to at least partially convert downward gravity forces exerted on latch 18 into an orientation change of latch 18, and another opening 22 that resists lateral movement of latch 18 at this opening 22. Such openings 22, 24 can therefore be considered together as a conversion and guide mechanism configured to convert downward forces on latch 18 into a guided orientation and / or position change of latch 18. More generally, system 2 preferably includes such a conversion and guide mechanism, which has the advantage that automatic movement to the locked position under the influence of gravity can be combined with at least partial lateral locking movement of latch 18 along the lower side of crossbar receiving space 16, which is typically held open by hook element 12. The conversion and guide mechanism can advantageously define a latch movement path P, which can therefore extend at least partially laterally.

[0038] In an embodiment, the latch 18 , at least the main section 20 of the latch 18 , extends in a circular segment shape along a circular arc corresponding to the latch movement path P in the coupled state.

[0039] Compared to other types of curves, circular arcs have the same curvature at all positions along the curve. This makes it possible to extend the main section 20 consistently according to the same latch motion path P at different positions of the latch 18 along the latch motion path P. Thus, in a relatively simple manner, effective guidance of the latch 18 between the released position and the locked position can be provided, whereby, in particular, the openings 22, 24 mentioned can work together with the main section 20 to provide guidance. Alternatively, the main section 20 of the latch 18 can extend in a straight line, since a straight line also has a constant (i.e., zero) curvature along its length. However, more generally, a non-zero curvature of the main section 20 has the following advantages: the substantially lateral latch motion along the crossbar receiving space 16 can be effectively and compactly combined with the substantially up-and-down latch motion at the upper side 26 of the end member 8 and the base member 4.

[0040] In an embodiment, the latch movement path P is defined by openings 22 , 24 in the end piece 8 , including a first opening 22 in an upper side 26 of the end piece 8 and a second opening 24 in a side 28 of the end piece 8 facing the crossbar receiving space 16 .

[0041] As explained above, such openings 22, 24 can advantageously form a switching and guiding mechanism for the latch 18. By providing the openings 22, 24 in the end piece 8, a separate guiding structure can be omitted, making a relatively simple and compact construction of the system 2 possible. By providing the first opening 22 in the upper side 26, a portion of the latch 18 can extend at and / or above the upper side 26, making it easier to operate the latch 18 from above. By providing the second opening 24 in the side 28 facing the crossbar receiving space 16, a portion of the latch 18 can extend at the crossbar receiving space 16, at least in the locked position.

[0042] In an embodiment, the latch 18 extends between a blocking end 30 and an operating end 32 , wherein the blocking end 30 is movable along the crossbar receiving space 16 in a coupled state by moving the latch 18 between a locked position and a released position.

[0043] Thus, the blocking end 30 can, together with the end of the hook element 12, determine the size of the passage into and out of the crossbar receiving space 16, such opening being narrower relative to the diameter of the transverse crossbar 14 when the latch 18 is in the locked state and wider when the latch 18 is in the released position, such as can be seen in FIG. Figures 2A to 2B Seen in.

[0044] In an embodiment, the operating end 32 is located at and / or above the upper side 26 of the end piece 8 in the coupled state so as to be accessible at the upper side 26 for operation, in particular in both the locking position and the release position.

[0045] Thus, a user on the relevant base part 4 can relatively easily operate the latch 18, for example with their feet or hands. In this regard, the latch 18 is preferably also operable from below, as mentioned elsewhere herein. Operation from below can be accomplished, for example, from the underside of the crossbar receiving space 16 and / or from the inside of the end part 8 by manually moving the main section 20 and / or the blocking end 30 along the latch movement path P.

[0046] In an embodiment, the latch 18 includes a blocking end section 34 at the blocking end 30 that extends inwardly relative to the circular segment shape of the main section 20 .

[0047] This effectively prevents the latch 18 from being moved out of the locked position by the transverse crossbar 14 located in the crossbar receiving space 16 in the event of an upward force on the base member 4, for example, due to wind. At the same time, the distance between the locked and released positions along the path P can be relatively short, resulting in an easily operable and compact system 2. Due to the inwardly extending blocking end section 34, this upward force on the base member 4 will advantageously cause the latch 18 to secure itself in the locked position in a clamping manner. More generally, the aforementioned prevention of undesirable movement and clamping securing of the latch 18 can be achieved in the following manner: at the blocking end 30, a contact surface 42 for contacting the transverse crossbar 14 is provided on the inner side of the latch's arcuate shape, with the contact surface 42 having a normal direction corresponding to the direction of movement of the latch 18 from the locked position to the released position. When the transverse crossbar 14 comes into contact with the contact surface 42 due to the upward force on the base part 4, the force exerted by the transverse crossbar 14 on the latch 18 is directed in the normal direction so that the latch 18 is fixed in the locked position, particularly when the system 2 is configured to resist movement beyond the locked position as in the example shown.

[0048] As an alternative or in addition to the feature of the blocking end section 34 extending inwardly relative to the arcuate shape, the length of the main section 20 of the latch 18 can be increased relative to the example shown, so that the latch 18 at least partially extends upwardly at the blocking end 30 in the locked position. Furthermore, alternatively or additionally, a thickening can be provided on the latch 18 at the blocking end 30 on the inner side of the arcuate shape, the thickening being formed to provide a contact surface having a normal direction.

[0049] In the example shown, the blocking end section 34 is relatively short, in particular having a length of the same order of magnitude as the thickness of the latch 18. Nevertheless, it is possible to Figure 2B It can be seen in FIG. 1 that the blocking end section 34 extends slightly inwardly relative to the circular segment shape of the main section 20 and the latch movement path P.

[0050] In an embodiment, the latch 18 includes an operating end section 36 at the operating end 32 that extends inwardly relative to the circular segment shape of the main section 20 .

[0051] In this way, the operating end 32 and / or the operating end section 36 can be particularly easily accessed for operation by the user. In particular, in the locked position, the operating end section 36 preferably extends beyond the end of the end piece 8, which is formed here by the side 28 of the end piece 8 facing the crossbar receiving space 16, so that manual engagement of the operating end 32 is not hindered by the end piece 8. The operating end section 36 can thus form a lug, which can be engaged by the user in the locked position, as can be done, for example, in the Figure 3A Seen in.

[0052] More generally, when the operating end section 36 extends in an offset manner compared to the main section 20, it can be additionally resisted that the operating end section 36 can move downward through the opening 22 when the latch 18 moves along the latch movement path P, thereby resisting the latch from moving beyond the locking position from the release position. Therefore, it can be considered that, in an embodiment, the operating end 32 is formed to resist the latch 18 from moving beyond the blocking position from the release position by interacting with the end piece 8, in particular, with the upper side 26 in which the opening 22 is formed.

[0053] In an embodiment, in particular in the locking position, the operating end section 36 extends from the main section 20 towards the crossbar receiving space 16 .

[0054] In this way, it is possible for the latch 18 in the locked position to constitute practically no obstruction at the upper side 26 of the end part 8, so that in the locked position a relatively flat and unobstructed walking surface of the floor part 4 can be provided, while the operating end 32 can still remain suitably accessible for operation.

[0055] In an embodiment, the operating end section 36 extends downwardly in the release position so that the portion of the main section 20 extending above the upper side 26 of the end piece 8 is shielded inside the circular segment from contact with the user's foot.

[0056] In itself, foot contact with latch 18 in the released position is not undesirable. On the contrary: in the embodiment shown in the example, latch 18 is designed to be operable by such foot contact to move latch 18 from the released position to the locked position. This foot contact can, for example, be directed primarily downward, but can also be directed more to the side, with the associated contact surface of latch 18 having an inclined surface that allows lateral foot contact to translate into downward movement of latch 18. However, foot contact with the inner side of the circular segment of main section 20 is undesirable, not only because it does not assist in moving the latch to the locked position, but also because the foot could become stuck in the segment. In this case, the aforementioned shielding of the operating end section 36, particularly in combination with the circular segment of main section 20, provides a simple and stable solution. Furthermore, with respect to the arrangement of the operating end section 36, this solution can be well integrated with one or more of its other functions, such as the aforementioned operation of latch 18 from the locked position to the released position.

[0057] According to the present invention, the system 2 further comprises a resistance element 38 configured to provide elastic resistance to resist movement of the coupled latch 18 from the released position to the locked position, thereby at least selectively stabilizing the released position, wherein the elastic resistance can be overcome when the latch 18 is actively moved to the locked position by the user using the hand or foot.

[0058] In this manner, the latch 18 can be maintained in the released position, if desired, without requiring continued operation, thereby allowing the base member 4 to be removed from the transverse rail 14, for example, during disassembly or modification of the scaffold 6. The resistance element 38 is preferably configured to resist movement toward the locked position only in the released position. That is, when the latch 18 has moved to a certain extent from the released position toward the locked position, for example, by active operation of the user, the resistance element 38 preferably does not resist further movement of the latch 18 toward the locked position, allowing the latch 18 to reach the locked position, for example, under its own weight, as described elsewhere herein.

[0059] In an embodiment, the resistance element 38 comprises a leaf spring. In an embodiment, the resistance element 38 is made of spring steel.

[0060] Thus, the resistance element 38 can be realized in a relatively simple and effective manner. Figure 7, the resistance element 38 shown in the example can be seen particularly clearly. The resistance element 38 is formed here, and can be formed more generally, as a folded strip made of spring steel, which is attached to the latch 18 by means of a fastener 44, such as a fastening bolt or a nail, and which extends from the fastener 44 as a leaf spring downwardly along the inner side 48 of the latch 18 and is spaced apart from the inner side 48 of the latch 18 and extends through an opening 46 in the latch 18 to the outside of the outer side 50 of the latch 18.

[0061] More generally, it is considered that in embodiments, the resistance element 38 is fixedly connected to one of the latch 18 and the end piece 8 and is configured to engage with the other of the latch 18 and the end piece 8, depending on the position of the latch 18 relative to the end piece 8. Thus, in this manner, for example, as Figure 7 As an alternative to the resistance element 38 shown in FIG. 1 and fixedly connected to the latch 18 , the resistance element can be fixedly connected to the end piece 8 , for example at the opening 22 .

[0062] exist Figure 7 In the case shown in FIG, resistance element 38, particularly the portion extending along and spaced apart from inner side 48 of latch 18, provides elastic resistance to the downward movement of latch 18, particularly by interacting with the edge of opening 22. This resistance is overcome when a user actively moves latch 18 downward, whereby the leaf spring of resistance element 38 deforms to pass through opening 22, thereby reducing or even eliminating the aforementioned distance between the leaf spring and inner side 48 of latch 18. Although not necessarily required, a similar operation of resistance element 38 can be employed when latch 18 is moved in the opposite direction, for example, from a locked position to a released position by a user: resistance element 38 also provides elastic resistance when passing through opening 22 in upper side 26 of end member 8. This resistance can, for example, provide tactile feedback. Furthermore, this resistance can help prevent latch 18 from being inadvertently moved into the released position, such as when hooking base member 4 to transverse cross member 14.

[0063] In an embodiment, the system 2 , and in particular the resistance element 38 , is configured to resist decoupling of the latch 18 relative to the end piece 8 in the coupled state.

[0064] exist Figure 8 , it can be seen by way of example that the end 52 of the resistance element 38 resists such disconnection by engaging with the inside of the end piece 8 at the opening 22, so that the latch 18 may generally have difficulty moving further upward from the release position, if at all. In this way, unintentional disconnection can be resisted.

[0065] Possibly, if necessary, disconnection of the latch 18 is also possible, in particular by manually moving the end 52 into the opening 46. In this way, the latch 18 can, for example, be easily replaced or cleaned.

[0066] In the example shown, the resistance element 38 is configured so that coupling of the latch 18 to the end piece 8 (e.g. as a first coupling in an assembly step, and / or recoupling after maintenance) is not resisted, at least not by more than an elastic resistance that can be overcome by a user actively moving the latch 18 downwards. Figure 6A It can be seen in FIG. 1 that in such a coupling, the latch 18 can be moved from above through the opening 22 and then follow the latch movement path P, whereby the resistance element 38, in particular the portion at the end 52, may be moved in the manner described above. Figure 6B In the case shown in FIG, some elastic resistance is provided. After this resistance is overcome, the latch 18 is effectively in a release position coupled to the end piece 8. More generally, Figure 6A and Figure 6B In this way it is shown that coupling of the latch 18 can be particularly easy, while the resistance element 38 can, for example, already be preassembled to the latch 18 .

[0067] In an embodiment, latch 18 is coupled to end member 8. This coupling is preferably removable, for example, as described above, but may also be a fixed coupling. When latch 18 is coupled to end member 8, system 2 is ready for use, at least in the embodiment including the example shown. Furthermore, in this manner, latch 18 can be easily retained with base member 4, for example, during transport.

[0068] In an embodiment, the latch 18 is configured in the coupled state to move from the locked position toward the released position by interacting with the transverse crossbar 14 when the base member 4 is hooked to the transverse crossbar 14 using the hook element 12, so that the transverse crossbar 14 can be received in the crossbar receiving space 16 during the hooking without operating the latch 18.

[0069] In this way, the ease of use of the system 2 can be greatly improved. Preferably, the release position itself is almost, but not quite, reached, so that the latch 18 can then automatically move to the locked position when the transverse crossbar 14 is already received in the crossbar receiving space 16. Alternatively, it is possible that the release position may actually be reached, so that manual operation may be required to return the latch to the locked position.

[0070] exist 5A to 5D, it is shown step by step how the latch 18 can thus be moved from the locked position towards the released position. Since the transverse crossbar 14 is able to enter the crossbar receiving space 16 just before reaching the released position, and possibly since the resistance element 38 provides some elastic resistance to reaching the released position as explained elsewhere herein, the released position itself is almost, but not completely, reached (see Figure 5D , for example with the release position shown Figure 2B compared to).

[0071] Unlike what preferably occurs in the release position itself, the resistance element 38 here does not resist the movement of the latch 18 towards the locking position, so that, as mentioned, the latch 18 can automatically move into the locking position after the floor part 4 has been hooked to the transverse crossbeam 14 via the hook element 12.

[0072] Although strictly speaking, Figure 5D The position of the latch 18 shown in FIG can be considered a release position, since in this position of the latch it is possible for the transverse crossbar 14 to move out of the crossbar receiving space 16, but it will be clear that this position is still different from the release position referred to in the context of this specification, at least in this specification when the release position is stabilized using the resistance element 38. This stabilized release position preferably allows the transverse crossbar 14 to leave the crossbar receiving space 16 with a certain amount of movement play or freedom of movement, and is therefore different from Figure 5D location, in Figure 5D In the position of , the transverse crossbar 14 is in contact on one side with the hook element 12 and on the other side with the blocking end 30 of the latch 18 .

[0073] In this regard, the possibilities described herein for moving the latch 18 toward the release position by interacting with the transverse crossbar 14 are also advantageously applicable in a more general sense, and can even be advantageously applied without an anti-lift system, as described, configured to automatically move the latch to the locked position in the coupled state when the latch is between the locked and released positions. Therefore, the present disclosure also includes an anti-lift system according to claim 17. With such a system, ease of use and efficiency can be increased, in particular because the latch 18 does not resist the hooking of the floor part 4 to the transverse crossbar 14 by the hook element, even when the latch 18 is in the locked position when the transverse crossbar 14 is approached.

[0074] In an embodiment, the latch 18 is provided at its blocking end 30 with a bevel or rounding on the outside of the latch 18, which forms a guide contact surface 44 (see Figures 2A to 2B and Figure 5B ) to guide the transverse crossbar 14 and the blocking end 30 along each other when the base member 4 is hooked to the transverse crossbar 14 by the hook element 12 as described above, as can be seen in 5A to 5D Gradually seen in.

[0075] exist Figures 5E to 5F In FIG. 1 , it can be seen step by step how, once the transverse crossbar 14 has been received in the crossbar receiving space 16 , the latch 18 moves automatically, in particular under the effect of its own weight, back into the locked position, as has already been explained elsewhere herein.

[0076] Although the present invention has been explained herein based on the examples of the embodiments and the accompanying drawings, these do not constitute any limitation on the scope of the invention as defined by the claims. It will be immediately apparent to those skilled in the art based on the present disclosure that many variations, combinations, and extensions are possible within this scope. Various examples of the present invention have been mentioned in the specification.

[0077] Reference Signs List

[0078] 2. Anti-lifting system

[0079] 4. Bottom plate components

[0080] 6. Scaffolding

[0081] 8. End parts

[0082] 10. Longitudinal ends of the bottom plate component

[0083] 12. Hook element

[0084] 14. Horizontal crossbar

[0085] 16. Crossbar receiving space

[0086] 18. Latch

[0087] 20. Main sections

[0088] 22. First opening in end piece

[0089] 24. Second opening in end piece

[0090] 26. Upper side of end piece

[0091] 28. The side of the end piece facing the crossbar receiving space

[0092] 30. Block end

[0093] 32.Operation end

[0094] 34. Blocking end section

[0095] 36.Operation end section

[0096] 38. Resistance element

[0097] 40. Standard parts

[0098] 42. Contact surface on the inner side of the latch

[0099] 44. Contact surface on the outside of the latch

[0100] 46. Opening in the latch

[0101] 48.Inside of the latch

[0102] 50. Outer side of the latch

[0103] 52. End of resistance element

[0104] P. Latch movement path

Claims

1. An anti-lifting system (2), the anti-lifting system (2) being used for a bottom plate component (4) of a scaffold (6), the anti-lifting system (2) comprising: - an end part (8) configured to form a longitudinal end (10) of a base part (4) for a scaffold (6), the end part (8) being provided with one or more hook elements (12), the base part (4) being hookable at the longitudinal end (10) to a transverse crossbar (14) of the scaffold (6) by means of the hook elements (12) so as to be supported on the transverse crossbar (14), wherein the hook elements (12) define a crossbar receiving space (16) for the transverse crossbar (14), the transverse crossbar (14) being received in the crossbar receiving space (16) when the base part (4) is hooked to the transverse crossbar (14) by means of the hook elements (12); and a rigid latch (18) capable of being coupled to the end piece (8), the latch (18) being movable relative to the end piece (8) along a latch movement path (P) between a release position and a locked position, wherein in the locked position the latch (18) extends along the crossbar receiving space (16) to block movement of the received transverse crossbar (14) out of the crossbar receiving space (16), and wherein in the release position the latch (18) extends less or not at all along the crossbar receiving space (16) to release movement of the received transverse crossbar (14) out of the crossbar receiving space (16), wherein the anti-lift system (2) is configured to automatically move the latch (18) to the locking position in the coupled state when the latch (18) is located between the locking position and the releasing position, at least when the transverse crossbar (14) is received in the crossbar receiving space (16), Characterized in that the anti-lift system (2) further comprises a resistance element (38), which is configured to provide elastic resistance to resist the movement of the connected latch (18) from the release position to the locked position so as to at least selectively stabilize the release position, wherein the elastic resistance can be overcome when the latch (18) is actively moved to the locked position by the user by hand or foot, wherein the resistance element (38) comprises a leaf spring.

2. The anti-lifting system according to claim 1, wherein: The latch (18), at least a main section (20) of the latch (18), extends in a circular segment shape along a circular arc, which corresponds to the latch movement path (P) in the coupled state.

3. The anti-lifting system according to claim 1 or 2, wherein: The latch movement path (P) is defined by openings (22, 24) in the end piece (8), said openings (22, 24) comprising a first opening (22) in an upper side (26) of the end piece (8) and a second opening (24) in a side (28) of the end piece (8) facing the crossbar receiving space (16).

4. An anti-lift system according to any one of the preceding claims, wherein: The latch (18) extends between a blocking end (30) and an operating end (32), wherein the blocking end (30) is movable along the crossbar receiving space (16) in the coupled state by moving the latch (18) along the latch movement path (P) between the locking position and the release position.

5. The anti-lifting system according to claim 4, wherein: The operating end (32) is located at the upper side (26) of the end piece (8) and / or above the upper side (26) in the coupled state so as to be accessible for operation at the upper side (26), in particular in both the locking position and the release position.

6. The anti-lift system according to claim 4 or 5 when dependent on claim 2, wherein: The latch (18) includes a blocking end section (34) at the blocking end (30) that extends inwardly relative to the circular segment shape of the main section (20).

7. An anti-lift system according to claim 4, 5 or 6 when dependent on claim 2, wherein: The latch (18) includes an operating end section (36) at the operating end (32), the operating end section (36) extending inwardly relative to the circular segment shape of the main section (20).

8. The anti-lifting system according to claim 7, wherein: The operating end section (36) extends from the main section (20) toward the crossbar receiving space (16).

9. The anti-lifting system according to claim 7 or 8, wherein: The operating end section (36) extends downwardly in the release position to shield the portion of the main section (20) extending above the upper side (26) of the end piece (8) from contact with the user's foot on the inner side of the circular arcuate shape.

10. The anti-lift system according to any one of claims 4 to 9, wherein: The operating end (32) is formed to resist movement of the latch (18) from the release position beyond the blocking position by interacting with the end piece (8).

11. An anti-lift system according to any one of the preceding claims, wherein: The resistance element (38) is made of spring steel.

12. An anti-lift system according to any one of the preceding claims, wherein: The resistance element (38) is fixedly connected to one of the latch (18) and the end piece (8), and the resistance element (38) is configured to engage with the other of the latch (18) and the end piece (8) depending on the position of the latch (18) relative to the end piece (8).

13. The anti-lifting system according to claim 12, wherein: The resistance element (38) is formed as a folded strip made of spring steel, which is attached to the latch (18) using a fastener (44) such as a fastening bolt or nail, and the folded strip extends from the fastener (44) downwardly along the inner side (48) of the latch (18) and is spaced apart from the inner side (48) as a leaf spring, and extends through an opening (46) in the latch (18) to the outside of the outer side (50) of the latch (18).

14. An anti-lift system according to any one of the preceding claims, wherein: The resistance element (38) is configured to resist movement toward the locked position only in the released position.

15. The anti-lift system according to any one of the preceding claims, configured to resist decoupling of the latch (18) relative to the end piece (8) in the coupled state, wherein The resistance element (38) is further configured to resist decoupling of the latch (18) relative to the end piece (8) in the coupled state.

16. An anti-lift system according to any one of the preceding claims, wherein: The anti-lift system (2) is configured to automatically move the latch (18) to the locking position under the action of its own weight in the coupled state when the latch (18) is located between the locking position and the releasing position, at least when the transverse crossbar (14) is received in the crossbar receiving space (16).

17. Anti-lift system (2) according to any one of the preceding claims, in, The latch (18) is configured in the coupled state to move from the locking position toward the release position by interacting with the transverse crossbar (14), preferably approaching the release position but not moving to the release position, when the base part (4) is hooked to the transverse crossbar (14) using the hook element (12), so that the transverse crossbar (14) can be received in the crossbar receiving space (16) during hooking without operating the latch (18).

18. An anti-lift system according to any one of the preceding claims, wherein: The latch (18) is coupled to the end piece (8).

19. A floor component (4) for a scaffold (6), the floor component (4) being provided with at least one anti-lift system (2) according to any one of the preceding claims, wherein: The end parts (8) of each anti-lift system (2) form respective longitudinal ends (10) of the floor part (4).

20. Floor member (4) according to claim 19, wherein The latch (18) is manually operable in the coupled state both from the upper side of the floor part (4) and from the lower side of the floor part (4).

21. A scaffold (6) provided with a floor member (4) according to claim 19 or 20, wherein: The floor part (4) is hooked to the corresponding transverse crossbar (14) of the scaffolding (6) at the longitudinal end (10) by means of the hook element (12), so that the transverse crossbar (14) is received in the crossbar receiving space (16).

22. Use of the anti-lifting system (2) according to any one of claims 1 to 18, wherein the anti-lifting system (2) is used for anti-lifting protection of a floor member (4), wherein the floor member (4) is hooked to a transverse crossbar (14) of a scaffold (6) at a longitudinal end (10) of the floor member (4) by means of a hook element (12), so that the transverse crossbar (14) is received in the crossbar receiving space (16), wherein: The latch (18) is coupled to the end piece (8) and preferably automatically moves to the locked position when the latch (18) is between the locked position and the released position.

Images