Load handling device and load handling arrangement

Abstract

Load-handling device (1), in particular a lifting clamp, comprising a base element (2), a pull tab (3) movably mounted on the base element (2), and at least one spreader leg (4) pivotably mounted on the base element (2) between a starting position and an expanding position, wherein the pull tab (3) is connected to the at least one spreader leg (4) via a coupling element (5), in particular via a coupling rod, such that the at least one spreader leg (4) is movable, in particular pivotable, by movement of the pull tab (3) relative to the base element (2) between the starting position and the expanding position, wherein the load-handling device (1) has a locking device (12) with which the at least one spreader leg (4) can be locked in its applied starting position and in an intermediate position between the starting position and the expanding position.(Claim 5) wherein the locking device (12) has an actuating lever (13, 14) for locking in the initial position and for locking in the intermediate position, (Claim 7) wherein each of the actuating levers (13, 14) is associated with a lever cam (19, 24), (Description p. 15, lines 21 f., p. 17, lines 28 f.) wherein the locking device (12) has a locking bolt (15) and a bolt receptacle (16) for locking the at least one spreading leg (4) in the initial position, (Claim 8) wherein the locking device (12) has a locking bolt (17) and a bolt receptacle (18) for locking the at least one spreading leg (4) in the intermediate position, (Claim 9) wherein the locking bolt (15) for the initial position is in its released position by means of the The lever mechanism (19) and the actuating lever (13) can be locked (description p. 18, line 3 ff.),and wherein the locking bolt (17) can be locked in its locking position for the intermediate position by the lever cam (24) and the actuating lever (14). (Description p. 18, line 8 ff.),

Description

[0001] The invention relates to a load-bearing device, in particular a lifting clamp, which can be used, for example, to lift wooden panel walls.

[0002] Furthermore, the invention also relates to a load-bearing arrangement comprising at least two such load-bearing means.

[0003] Lifting devices of the type mentioned above are known in a wide variety of designs and are used for lifting a wide variety of loads.

[0004] From DE 84 14 857 U1 a construction device for stacking prefabricated parts, in particular chimney bricks, is known, which is designed as a movable lifting aid device or one that can be placed on an upper, preferably on the top floor of a building.

[0005] From DE 11 84 054 A a spreading gripper with a central support rod is known, in which obliquely upward-directed swivel arms are connected via linkages to a sleeve which can be moved and locked on the support rod.

[0006] From DE 78 13 182 U1 a device for gripping, holding and optionally transporting ring-shaped or cylindrical material, preferably for hanging on transport systems, is known.

[0007] From DE 11 00 251 A a spreading gripper with a central support tube and a number of clamping shoes, which can be moved towards and away from the support tube by means of a sleeve sliding freely along the support tube and of which each is articulated to the support tube by at least two levers, is known.

[0008] The object of the invention is to provide a load-bearing device of the type mentioned above which is particularly suitable for handling wooden panel building elements without visibly damaging them by attaching the load-bearing device from the outside.

[0009] To solve the problem, a load-handling device with the features of independent claim 1 is first proposed. To solve the problem, a load-handling device, in particular a lifting clamp, is thus proposed, comprising a base element, a pull tab movably mounted on the base element, and at least one spreader leg mounted on the base element, pivotable between a starting position and a spreading position, wherein the pull tab is connected to the at least one spreader leg via a coupling element, for example via a coupling rod, such that the at least one spreader leg can be moved between the starting position and the spreading position by moving the pull tab relative to the base element.A movement of the pull tab, preferably linear, caused by a pull on the pull tab, can in this way be converted into a movement of the spreader leg into its spread position or at least in the direction of its spread position.

[0010] Preferably, the at least one spreader leg can be pivotally mounted on the base element and thus pivoted between its initial position and its extended position on the base element. In the initial position, the at least one spreader leg can be folded in and / or its free end can be brought close to the base element and / or it can be arranged within a receiving space defined by the base element. In the initial position, the at least one spreader leg can be stowed in the base element. In the extended position, the at least one spreader leg can be unfolded and / or its free end can be further away from the base element than in the initial position.

[0011] In this way, it is possible to insert the load-handling device into a receiving opening on the load to be lifted, in particular on a wooden panel element to be lifted, and by pulling on the pull tab, to move at least one spreading leg from its initial position into its spreading position, in which it secures the load-handling device within the receiving opening on the load in such a force-fit and / or form-fit manner that the load can be lifted using the load-handling device.

[0012] Preferably, the coupling element is designed as a connecting rod. This enables the transmission of tensile and compressive forces between the tensioning lug and at least one spreader leg. Each spreader leg of the load-bearing device can be assigned one coupling element.

[0013] For the conversion of a linear movement of the pull tab, in particular into a pivoting movement of at least one spreader leg, it can be advantageous if the coupling element is connected to the pull tab via a joint and to the spreader leg via a joint.

[0014] It may be provided that at least one spreading leg can be moved into the spreading position by a pulling movement of the pull tab towards its free end.

[0015] In one particularly important embodiment of the load-handling device, it is provided that the load-handling device has two spreading legs, each of which is movably, preferably pivotably, mounted on the base element between a starting position and a spreading position. The pull tab can be connected to each of the two spreading legs via a coupling element. In this way, it is possible to transmit a movement of the pull tab, in particular a linear movement of the pull tab, relative to the base element of the load-handling device, via the two coupling elements to the preferably pivotably mounted spreading legs of the load-handling device, in order to move them from their respective starting position to their respective spreading position, preferably by pivoting them.In this way, a load-handling device is provided that can reliably hook into a receiving opening of a load and is therefore particularly suitable for lifting even comparatively heavy loads, such as timber panel building elements.

[0016] Preferably, each coupling element is connected to the pull tab via a joint and to its respective spreader leg via a joint.

[0017] It can be advantageous if the two spreading arms of the lifting device are arranged on two different sides of the lifting arm's pull tab. This gives the lifting device a symmetrical structure, at least with respect to the two spreading arms, which promotes a uniform force distribution when lifting a load into the lifting device.

[0018] The pull tab can be mounted to the base element and / or between the spreader legs so that it can move linearly. This allows the pull tab to move, particularly linearly, between the two spreader legs. The coupling elements can convert this linear movement of the pull tab into a movement, particularly a pivoting movement, of the two spreader legs.

[0019] In the spread position of the spreader legs, the coupling elements can be aligned at an acute angle to a longitudinal center axis and / or to a direction of movement of the pull tab. This ensures that a tensile force transferred to the pull tab when lifting a load connected to the lifting device is reliably converted into a clamping force with which the lifting device can be releasably fixed to the load. The aforementioned acute angle between the coupling elements and the longitudinal center axis and / or to the direction of movement of the pull tab is also advantageous for releasing the lifting device from the load. When the pull tab is released, it can lower itself under gravity and return to its initial position.The movement of the pull tab is also transferred to the coupling elements and the spreading legs connected to them, so that these can also return to their folded-in starting position without the use of tools, if necessary.

[0020] The pull tab can have an attachment point, such as an eyelet, at its free end for attaching a lifting device. This allows the load-handling device to be attached to a lifting device via the pull tab, and the pull tab can be moved from a starting position, in which the at least one spreader leg is folded or retracted, to an extended position during lifting. The preferably linear movement of the pull tab in the direction of pull is converted, preferably into a pivoting movement, of the at least one spreader leg from its starting position into a spread position detached from the base element via the connection between the pull tab and the at least one spreader leg. In this way, the load-handling device can be automatically fixed to the load to be lifted when a tensile force is transferred to the load via the pull tab of the load-handling device.

[0021] The free end of the pull tab can be the end of the pull tab that faces away from the base element of the load-bearing device.

[0022] According to the invention, the load-bearing device has a locking device. The locking device is designed to lock the at least one spreading leg in its applied initial position and in an intermediate position between the initial position and the spreading position.

[0023] Locking at least one spreader leg in its initial position can be helpful for lifting the load-handling device by pulling on the pull tab, thereby separating it from the load to be lifted. This prevents the spreader leg from moving from its initial position into its extended position, where it would otherwise prevent the load-handling device from separating from the load. The locking mechanism of the spreader leg thus serves to hold it in its initial position regardless of any load on the pull tab.

[0024] Locking at least one spreader leg in an intermediate position between the initial position and the extended position can be helpful when the load-bearing device is to be used in an opening of a load that is formed in an inclined surface and / or has a longitudinal center axis that is oriented obliquely to the direction of gravity. Such a situation can occur, for example, with so-called gable walls, i.e., timber-framed walls with a gable end. Here, openings for inserting the load-bearing device are often arranged on an inclined surface and therefore have longitudinal center axes oriented obliquely to the direction of gravity. In this application, at least one spreader leg can be moved from its initial position into a slightly extended position by pulling on the pull tab.This prevents the load-bearing device from being pulled out of the inclined insertion opening for the load-bearing device by a pull oriented at an angle to the orientation of a longitudinal axis of the pull tab, without at least one spreading leg properly spreading open by the pull on the pull tab.

[0025] Locking at least one spreader leg in the previously outlined intermediate position can be used to hold the load-bearing device fixed to a load in an obliquely oriented insertion opening and to prevent the load-bearing device from being pulled out of the insertion opening before at least one spreader leg has properly opened.

[0026] In this context, it can be advantageous if at least one spreader leg is locked in the intermediate position with play, i.e., with room for movement.

[0027] The locking mechanism of the spreader arm in its position can therefore be designed such that, by pulling the pull tab, the spreader arm can still travel a remaining adjustment path from its locked intermediate position back to its proper spread position. The locking of at least one spreader arm in its intermediate position can thus be understood as a lower stop, which effectively prevents, for example, the spreader arm from returning to its starting position due to gravity.

[0028] An upper stop, which defines the spread position of the at least one spreader leg, can be provided between the base element and the pull tab and / or between the base element and the at least one spreader leg. In a preferred embodiment of the load-bearing device, the pull tab has a guide recess, for example a longitudinal slot, the upper edge of which can define the initial position and the lower edge of which can define the maximum spread position of the at least one spreader leg.

[0029] The base element can have a guide element that fits the guide recess and serves as a travel limiter for the pull tab. In the pull tab's operating position, this guide element is located on the base element within the guide recess of the pull tab. The length of the guide recess, preferably designed as a longitudinal slot, and the guide element on the base element can then define a maximum linear adjustment path for the pull tab on the base element.

[0030] According to the invention, the locking device for activating and / or releasing the locking mechanism has at least one actuating lever.

[0031] The locking device has separate operating levers for locking in the starting position and for locking in the intermediate position. This allows the intermediate and starting positions to be engaged and disengaged independently. It can be advantageous if the operating lever(s) are designed to be connected to a pull element, such as a rope, cord, or cable. This allows the locking lever(s) to be easily operated remotely.

[0032] In one embodiment of the invention, an electrical, in particular an electromechanical, actuating device is provided for actuating the locking device to activate and / or release the locking mechanism.

[0033] According to the invention, the locking device for locking at least one spreader leg in its initial position comprises a locking bolt and a bolt receptacle. The bolt receptacle can be formed on the pull tab, and the locking bolt can engage in the bolt receptacle in the locked position to secure the pull tab to the base element in its initial position. If the bolt receptacle for locking at least one spreader leg in its initial position has no or only a minimal interference compared to the locking bolt, the locking bolt, and thus ultimately the spreader leg, can be fixed in the initial position with no play or with virtually no play.

[0034] According to the invention, the locking device for locking the at least one spreader leg in the intermediate position comprises a locking bolt and a bolt receptacle. The bolt receptacle can be formed on the pull tab, and the locking bolt engages in the bolt receptacle in the locking position to secure the pull tab to the base element in an intermediate position. Preferably, the bolt receptacle for the intermediate position can be an elongated hole oriented in the direction of movement of the pull tab toward the base element and / or have an interference in the direction of movement of the pull tab toward the base element compared to a cross-section of the locking bolt relevant for locking. In this way, it is possible to provide the locking of the at least one spreader leg in the intermediate position with the aforementioned clearance.Even when the locking mechanism is activated, i.e., when the locking bolt engages in the bolt receptacle for the intermediate position, the pull tab can still be moved further in the direction of pull within the limits defined by the bolt receptacle, so that by pulling on the pull tab at least one spreading leg can be moved from the intermediate position to the spreading position.

[0035] At least one locking bolt, preferably both of the aforementioned locking bolts, can be movably mounted on the base element between a locking position and a release position. It can be advantageous if at least one locking bolt, preferably both locking bolts, is movably mounted against a restoring force of a restoring element, preferably one in each case, from its locking position to a release position or vice versa. The restoring force of the restoring element ensures that the locking bolt remains in its respective locking position or release position when the locking device is not actuated.

[0036] In one embodiment of the load-handling device, the locking bolt for locking the at least one spreading leg in its initial position—that is, in the position where the at least one spreading leg is folded in and the load-handling device is not fixed in a corresponding insertion opening for a load—is movable from the locked position to a released position against the action of a return element. This ensures that the locking bolt remains in its locked position when the locking device is not actuated.

[0037] In one embodiment of the load-bearing device, the locking bolt for locking the at least one spreader leg in its intermediate position is movable from its released position to its locked position against a restoring force from a restoring element. This allows the restoring element to be pre-tensioned. By actuating, or optionally remotely actuating, the actuating lever assigned to the locking bolt for locking the at least one spreader leg in its intermediate position, the locking mechanism can be released automatically and easily. When the actuating lever is moved to a release position, the restoring element relaxes, and the locking bolt can be moved from its locked position to its released position by the restoring element. The at least one spreader leg can then be moved back to its folded-in initial position without restriction from the locking bolt.

[0038] Once the spreader leg has reached its starting position, the locking mechanism of at least one spreader leg can be activated. This is achieved by actuating, or if necessary remotely actuating, the operating lever of the locking device, which is associated with the locking bolt for securing at least one spreader leg in its starting position. The restoring force of the return spring then automatically returns the locking bolt to its locked position when the operating lever is actuated.

[0039] A locking bolt, preferably the locking bolt for the intermediate position of at least one spreader leg, can be locked in its locking position, preferably with an actuating lever of the locking device, for example, the one already mentioned above. At least one locking bolt, in particular the locking bolt for the starting position, can be locked in a locking position. This is preferably done with an actuating lever of the locking device, for example, the one already mentioned above.

[0040] At least one of the spreader legs can have a friction-enhancing coating and / or a friction-enhancing structure, such as serrations, on its contact surface facing a load in the operating position. This may make it possible to transmit higher forces with the load-bearing device and, if necessary, to lift even heavier loads.

[0041] In one embodiment of the load-handling device, it is provided that it has a mounting interface, particularly on its base element, for attaching a spacer rod. Two or more load-handling devices can be coupled to each other via a spacer rod in such a way that they maintain their relative position to one another. In this way, it is possible to equip a load with two or more of the aforementioned load-handling devices and lift it. Not only is the insertion of the load-handling devices into corresponding insertion openings on the load to be lifted significantly simplified by the spacer rod's determination of the relative distance between the load-handling devices.

[0042] Finally, to solve the problem, a load-bearing arrangement comprising at least two load-bearing devices is proposed, wherein the load-bearing devices are connected to each other via a spacer bar.

[0043] The invention is described in more detail below with reference to an exemplary embodiment, but is not limited to this embodiment. Further embodiments of the invention result from combining the features of one or more claims with each other and / or in combination with one or more features of the exemplary embodiment. The following are shown: Fig. 1 an isometric representation of a partially disassembled load-bearing device, in which a base element, a pull tab and two spreader legs of the load-bearing device connected to the pull tab via coupling elements can be seen, Fig. 2 a side view of the in Fig. 1. The load-handling device shown is inserted into an insertion opening of a load to be lifted, wherein the two spreading legs of the load-handling device are locked in their initial position shown by means of a locking device. Fig. 3 that in Fig. 2. Load-bearing devices shown with spreader legs in a spreading position, wherein the spreader legs contact a wall of the load insertion opening with their toothed contact surfaces, wherein the previously mentioned locking device for locking the spreader legs in an intermediate position is activated so that the spreader legs do not automatically extend into their position. Fig. 2. Return to the starting position shown, as well as Fig. 4 a perspective view of a load-bearing arrangement comprising two load-bearing devices connected to each other via a spacer bar.

[0044] All figures show at least one load-bearing device designated as a whole by 1, which is designed as a lifting clamp.

[0045] The load-bearing device 1 comprises a base element 2, a pull tab 3 movably mounted on the base element 2 and two spreader legs 4 each movably, i.e. pivotably, mounted on the base element 2 between a starting position and a spreading position.

[0046] In the initial position, the spreader legs 4 are folded in and their free ends are close to the base element 2. In the initial position, the spreader legs 4 are at least partially located within a receiving space 33 defined by the base element 2. In this way, the spreader legs 4 are stowed within the base element 2. In the spread position, the spreader legs 4 are unfolded and their free ends 34 are further away from the base element 2 than in the initial position.

[0047] The pull tab 3 is connected to each of the two spreader legs 4 by a coupling element 5, which in the embodiment of the load-bearing device 1 shown in the figures is designed as a connecting rod, such that the spreader legs 4 can be moved between the initial position (see figure) by a movement of the pull tab 3 relative to the base element 2 of the load-bearing device. Fig. 2) and the spread position (see Fig. 3) are movable.

[0048] To convert the movement of the pull tab 3 into a movement of the two spreader legs 4, the two coupling elements 5 each have two joints 31 and 32. The coupling elements 5 are connected to the pull tab 3 via their respective joints, designated 31. The coupling elements 5 are connected to their respective spreader legs 4 via their respective joints, designated 32.

[0049] The two spreading legs 4 can be moved by a pulling movement of the pull tab 3, which is located in Fig. 2 as illustrated by arrow 6, in the direction of the free end 7 of the pull tab 3 into the spreading position according to Fig. 3 will be moved.

[0050] The pull tab 3 has an attachment point 8 at its free end 7, namely an eyelet for attaching a lifting device (not shown in detail in the figures). If the load-bearing device 1 is pulled by the lifting device on the pull tab 3 in the direction of arrow 6, the pull tab 3 comes into the Fig. 1 position shown, whereby the two coupling elements 5 then also bring the spreading legs 4 into their spreading position and hold them there. Fig. Figure 3 shows the load-bearing device 1 in its position fixed within an insertion opening 9 of a load 10 shown in section, in which the load 10, for example a wooden panel wall, can be lifted using the load-bearing device 1.

[0051] The insertion opening 9 in the load 10 is an elongated hole that, according to the Fig. 2 and Fig. 3 has a trapezoidal cross-section in the plane of the drawing. The inclined wall of the insertion opening 9 is aligned with the inclined position of the two spreading legs 4 relative to a longitudinal center axis 11 of the pull tab 3, in the direction of which the pulling movement of the pull tab 3 also takes place.

[0052] The load-bearing device 1 also has a locking device 12 with which the two spreading legs 4 are held in their applied initial position according to Fig. 2 and can also be locked in an intermediate position between the starting position and the spread position.

[0053] Fig. Figure 3 illustrates that the two spreading arms 4 are locked in the intermediate position with play by means of the locking device 12, so that the pull tab 3 can still move a little further in the direction of pull 6 and the two spreading arms 4 can move from the intermediate position into the Fig. 3 can move in the spread position shown when the load-bearing device 1 with the load 10 attached to it is to be lifted.

[0054] To activate and release the locking device 12, the locking device 12 also has two actuating levers 13 and 14. Actuating lever 13 is used to actuate the locking mechanism in the initial position, while actuating lever 14 is used to actuate the locking mechanism in the intermediate position. To lock the two spreading arms 4 in the initial position, the locking device 12 has a locking bolt 15 and a corresponding bolt receptacle 16. The bolt receptacle 16 is formed on one side of the pull tab 3, and the locking bolt 15 engages in the bolt receptacle 16 in its locked position.

[0055] The locking bolt 15 engages in the bolt receptacle 16 to fix the pull tab 3 and thereby also the two spreading legs 4 in their initial position on the base element 2, i.e. the spreading legs 4 in the folded position according to Fig. 2 to hold. With the spreader legs 4 in this position, the load-bearing device 1 can simply be inserted into the insertion opening 9 of the load 10. Before the spreader legs 4 are moved into their spread position by pulling on the pull tab 3 in the direction of arrow 6 according to Fig. Before the 3 can be moved, the locking bolt 15 must first be moved out of its bolt receptacle 16. This is done by actuating the actuating lever 13. The actuating lever 13 is associated with a lever track 19 on the base element 2, in which the actuating lever 13 can be moved.

[0056] If the actuating lever 13 reaches the position within the lever track 19, Fig. In position 1 shown, in a detent point of the lever cam 19, the locking mechanism for the starting position is released and the locking bolt 15 is removed from the bolt receptacle 16.

[0057] The locking device 12 has a second locking bolt 17 and a corresponding bolt receptacle 18 for locking the two spreading arms 4 in the previously mentioned intermediate position. The bolt receptacle 18 is also formed on the pull tab 3. The locking bolt 17 engages according to Fig. 3 in the locking position into the bolt receptacle 18 to fix the pull tab 3 in an intermediate position on the base element 2. The bolt receptacle 18 for the intermediate position is an elongated hole oriented in the direction of movement 6 of the pull tab 3 towards the base element 2, which has an interference in the direction of movement of the pull tab 3 towards the base element 2 compared to a cross-section relevant for locking at the free end of the locking bolt 18.

[0058] This excess is particularly good in Fig. 3 can be seen in which the locking bolt 17 engages in the bolt receptacle 18, which is designed as an elongated hole. The upper edge 20 and the lower edge 21 of the bolt receptacle 18 each form a stop, whereby the pull tab 3 can be moved between the two stops provided by the bolt receptacle 18. The in Fig. The upper edge 20 of the bolt receptacle 18 shown in Figure 3 forms the stop that defines the positions of the pull tab 3 and the two spreader legs in the intermediate position. The lower edge 21 of the bolt receptacle 18 forms the stop for the movement of the pull tab 3, which defines the fully extended spreader position of the two spreader legs 4 when the intermediate position locking mechanism is activated.

[0059] The intermediate locking of the spreader legs 4 allows them to be held in a slightly spread position even without pulling on the pull tab 3, thereby pre-fixing the load-handling device 1 in an insertion opening 9 of a load 10 to be lifted. The use of the intermediate locking mechanism is particularly advantageous when the insertion opening 9 in the load 10 is oriented at an angle and has a longitudinal center axis oriented at an angle to the direction of gravity, as can be the case, for example, with insertion openings 9 in gable walls. The intermediate locking mechanism prevents the load-handling device 1 from being pulled out of the insertion opening 9 by pulling on the pull tab 3 without first spreading the spreader legs 4 and thus fixing the load-handling device 1 within the insertion opening 9 of the load 10.

[0060] The locking bolts 15 and 17 are movably mounted on the base element 2 between their respective locking and unlocked positions. The locking bolt 17 can be moved from its locking position to a unlocked position against a restoring force of a restoring element 23.

[0061] The locking bolt 15 for the initial position is movably mounted against a restoring force of a return element 22 from its locked position to a released position. When the bolt 15 is released for the initial position by actuating the actuating lever 13, the restoring force of the return element 22 can act on the locking bolt 15 and automatically move the locking bolt 15 from the released position, in which the return element 22 is biased, to the locked position according to Fig. 2 move.

[0062] Due to the precisely reversed arrangement and effect of the return element 23, which is assigned to the locking bolt 17 for the intermediate position, it is possible, when the actuating lever 14 for the intermediate position is actuated, to move the locking bolt 17 from its locking position to its release position by means of the action of the return element 23 assigned to it.

[0063] Is the actuating lever 14 moved from its position to the intermediate position? Fig. When the locking bolt 17 moves to the position shown in Figure 1 within its associated lever track 24, the locking mechanism is released and the return element 23 associated with the locking bolt 17 can apply its return force to the locking bolt 17, so that it returns from its locked position to its restoring position. Fig. The solution position shown in section 2 is reached.

[0064] The locking bolt 17 can be locked in its intermediate position by means of the lever mechanism 24 and the actuating lever 14. As mentioned previously, this is achieved by positioning the actuating lever 14 in the Fig. 1 shown holding point of the lever cam 24.

[0065] For its part, the locking bolt 15 can be used for the initial position in its Fig. The release position shown in section 1 is locked. This is done analogously using the previously mentioned lever mechanism 19, which has a holding point for the actuating lever 13. The actuating lever 13 is, according to Fig. 1 is arranged in the holding point of its lever track 19. If the actuating lever 13 is moved from the holding point according to Fig. When lever cam 19 is moved, the return element 22 associated with the locking bolt 15 can relax and automatically bring the locking bolt 15 into its locking position, in which it engages in the bolt receptacle 16 for the starting position on the pull tab 3 and prevents movement of the pull tab 3 relative to the base element 2.

[0066] The two spreading legs 4 have a friction-enhancing coating and / or a friction-enhancing structure on their respective contact surfaces facing the load 10 in the operating position. In the embodiment shown in the figures, the spreading legs 4 each have a toothed section 25.

[0067] With this toothing 25, the spreading legs 4 can wedge themselves particularly reliably within the insertion opening 9 of the load 10.

[0068] The base element 2 of the load-handling device 1 has a guide element 29 that serves as a stop and travel limiter for the pull tab 3. The guide element 29 is arranged within a guide recess 30 in the pull tab 3, which is designed as an elongated hole or longitudinal slot, and defines a starting position and a fully extended position of the pull tab 3 on the base element 2. The guide element 29 thus also serves as a lateral guide for the movement of the pull tab 3 between its starting position and its fully extended position on the base element 2.

[0069] The load-bearing devices 1 shown in the figures each have a fastening interface 26 for attaching a spacer rod 27. The fastening interface 26 is arranged on the base element 2 of the respective load-bearing device 1. Two load-bearing devices 1 can be connected via a spacer rod 27 to form a load-bearing assembly 28. Such a load-bearing assembly 28 is shown in Fig. Figure 4 shows the distance rod 27 between the two load-handling devices 1. This defines a relative position of the two load-handling devices 1 to each other, which can significantly simplify the handling of the load-handling devices 1 when inserting a load 10 into insertion openings 9, but also when removing the load-handling devices 1 from insertion openings 9.

[0070] The invention relates to improvements in the technical field of load-handling devices. Among other things, a load-handling device 1 is proposed, which has a movably mounted pull tab 3 on a base element 2 and at least one spreader leg 4 movably mounted on the base element 2 between a starting position and an extended position. By pulling on the pull tab 3, the movement of the pull tab 3 is transmitted via a coupling element 5 to the at least one spreader leg 4, so that it can be moved from its closed starting position into an extended position, thereby enabling the load-handling device 1 to be anchored in a correspondingly designed insertion opening 9 of a load 10 to be lifted. Reference symbol list 1 Load-bearing device 2 Basic element 3 pull tabs 4 spreader legs 5 coupling element 6 Direction of pull / Pulling movement 7 free end of 3 8. Attachment point, namely eyelet 9 Insertion opening 10 Last 11 Longitudinal center axis 12 Locking device 13 actuating levers for the starting position 14 Actuating levers for the intermediate position 15 locking bolts for the starting position 16 bolt holders for the starting position 17 locking bolts for the intermediate position 18 bolt holders for the intermediate position 19 lever mechanism for 13 20 top edge of 18 21 lower edge of 18 22 Return element, return spring of 15 23 Return element, return spring of 17 24 lever mechanism for 14 25 gear teeth 26 Mounting interface for 27 27 Spacer bar 28 Load bearing arrangement 29 guide element at 2 30 guide entry at 3 31 Joint between 5 and 3 32 Joint between 5 and 4 33 recording rooms in 2 34 free end of 4

Claims

[1] Load-handling device (1), in particular a lifting clamp, comprising a base element (2), a pull tab (3) movably mounted on the base element (2), and at least one spreader leg (4) pivotably mounted on the base element (2) between a starting position and an expanding position, wherein the pull tab (3) is connected to the at least one spreader leg (4) via a coupling element (5), in particular via a coupling rod, such that the at least one spreader leg (4) is movable, in particular pivotable, by movement of the pull tab (3) relative to the base element (2) between the starting position and the expanding position, wherein the load-handling device (1) has a locking device (12) with which the at least one spreader leg (4) can be locked in its applied starting position and in an intermediate position between the starting position and the expanding position.(Claim 5) wherein the locking device (12) has an actuating lever (13, 14) for locking in the initial position and for locking in the intermediate position, (Claim 7) wherein each of the actuating levers (13, 14) is associated with a lever cam (19, 24), (Description p. 15, lines 21 f., p. 17, lines 28 f.) wherein the locking device (12) has a locking bolt (15) and a bolt receptacle (16) for locking the at least one spreading leg (4) in the initial position, (Claim 8) wherein the locking device (12) has a locking bolt (17) and a bolt receptacle (18) for locking the at least one spreading leg (4) in the intermediate position, (Claim 9) wherein the locking bolt (15) for the initial position is in its released position by means of the The lever mechanism (19) and the actuating lever (13) can be locked (description p. 18, line 3 ff.),and wherein the locking bolt (17) can be locked in its locking position for the intermediate position by the lever cam (24) and the actuating lever (14). (Description p. 18, line 8 ff.), [2] Load-bearing device (1) according to the previous claim, wherein the coupling element (5) is connected to the pull tab (3) via a joint (31) and to the spreader leg (4) via a joint (32), and / or wherein the at least one spreader leg (4) is movable, in particular pivotable, into the spreading position by a pulling movement of the pull tab (3) in the direction of its free end (7). [3] Load-bearing device (1) according to one of the preceding claims, wherein the load-bearing device (1) has two spreading legs (4) which are each movable, in particular pivotable, on the base element (2) between a starting position and a spreading position, and wherein the pull tab (3) is connected to the spreading legs (4) via a coupling element (5) in each case, preferably wherein each coupling element (5) is connected to the pull tab (3) via a joint (31) and to its respective spreading leg (4) via a joint (32). [4] Load-bearing device (1) according to one of the preceding claims, wherein the pull tab (3) has at its free end (7) an attachment point (8), in particular an eyelet, for attaching a lifting device. [5] Load-bearing device (1) according to one of the preceding claims, wherein the at least one spreading leg (4) is locked in the intermediate position with play. [6] Load-bearing device (1) according to one of the preceding claims, wherein the bolt receptacle (16) is formed on the pull tab (3) and the locking bolt (15) is arranged on the base element (2) and engages in the bolt receptacle (16) in the locking position to fix the pull tab (3) in its initial position on the base element (2). [7] Load-bearing device (1) according to one of the preceding claims, wherein the bolt receptacle (18) is formed on the pull tab (3) and the locking bolt (17) is arranged on the base element (2) and engages in the bolt receptacle (18) in the locking position to fix the pull tab (3) in an intermediate position on the base element (2). [8] Load-bearing device (1) according to one of the preceding claims, wherein the bolt receptacle (18) for the intermediate position is an elongated hole aligned in the direction of movement (6) of the pull tab (3) to the base element (2) and / or has an excess in the direction of movement (6) of the pull tab (3) to the base element (2) compared to a cross-section of the locking bolt (17) relevant for locking. [9] Load-bearing device (1) according to one of the preceding claims, wherein at least one locking bolt (15, 17) is movably mounted on the base element (2) between a locking position and a release position, in particular wherein at least one locking bolt (15, 17), in particular the locking bolt for the intermediate position, is movably mounted against a restoring force of a restoring element (23) from its locking position into a release position and / or wherein at least one locking bolt (15, 17), in particular the locking bolt (15) for the initial position, is movably mounted against a restoring force of a restoring element (22) from its locking position into a release position. [10] Load-bearing device (1) according to one of the preceding claims, wherein at least one locking bolt (15, 17), in particular the one for the intermediate position, can be locked in a locking position, preferably with an actuating lever (14) of the locking device (12), and / or wherein at least one locking bolt (15, 17), in particular the one for the initial position, can be locked in a release position, preferably with an actuating lever (13) of the locking device (12). [11] Load-bearing device (1) according to one of the preceding claims, wherein the at least one spreading leg (4) has a friction-enhancing coating and / or structure, in particular a toothing (25), on its contact surface facing a load (10) in the operating position. [12] Load-bearing device (1) according to one of the preceding claims, wherein the load-bearing device (1), in particular on the base element (2), has a fastening interface (26) for fastening a spacer rod (27). [13] Load-bearing arrangement (28) comprising at least two load-bearing means (1) according to one of the preceding claims, wherein the load-bearing means (1) are connected to each other via a spacer rod (27).

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