EP0353325A1 - Device for shortening and/or mounting flat webbing bands or belts - Google Patents

Abstract

The device possesses a vertical base plate (1) having a jack ring (3) arranged in the upper region (2) thereof, the base plate (1) possessing at least three deflection members (5, 6, 7) which are mutually spaced at distances (29, 30) and stand up vertically from the base plate (1), and have free ends (5a, 6a, 7a) which are designed and arranged to deflect, in a meander-shaped manner, the belt end (8), at least some of which can be shortened, and which is in part looped to form a double layer. The device is suitable for high load ranges. <IMAGE>

Description

The invention relates to a device for shortening and / or attaching straps or straps made of flat fabric when looping around and lifting a load, the free ends of the straps or straps being inserted or threaded into the device and pulled through the device at least when shortening one of the strap ends and then struck it firmly before lifting the load.

In the prior art, more and more straps or belts made of high-strength flat fabrics are used for lifting loads, because these are of application-technical advantage over ropes or chains in a number of practical applications, in particular in addition to goods or machine parts, vehicles, etc. which are at risk of damage.

Furthermore, the handling of such belts or straps is associated with less physical exertion for the operating personnel or the strikers, and is therefore also advantageous for the rapid implementation of loading and unloading work. Similar advantages also apply to the use of straps or straps made of high-strength plastic fabric when lashing loads for transport.

Lifting straps and / or lifting straps are also suitable for lifting heavy loads, because in contrast to ropes or chains, the amount of work involved in attaching them is considerably reduced and damage to the parts or goods to be secured, as could often be caused by metal lashing elements, are avoidable when using belts or straps.

In contrast to chains, however, a transport securing or lifting strap or belt, for example, cannot be shortened so easily to the respectively optimal or required length. For attaching to the crane hook, tapes of this type are therefore usually reinforced at their ends in conventional types of use and are e.g. sewn loops assembled.

For goods or loads to be viewed differently, it is therefore necessary to have a larger number of under to keep tapes or belts of different lengths or in different configurations. This makes the loading and unloading work more expensive and complicated and, due to the increased expenditure of material and time, results in unpleasant increases in costs for relevant work for loading and unloading.

From DE-0S 30 42 364 a device for lashing a belt is known, in which this belt is formed at one end with a made-up loop and the other end is inserted or threaded into the device and first pulled through the device to shorten it and then struck firmly for lashing or lifting a load or goods. Such and similar known devices, of which there are a large number in the prior art, to which the so-called turnbuckles can also be assigned, e.g. according to DE-PS 32 03 750, are on the one hand comparatively complex and complicated in their construction and on the other hand not suitable for use with larger loads.

The prior art clearly lacks an absolutely uncomplicated, robust, maintenance-insensitive, user-friendly device or device suitable for lifting or attaching heavy loads by means of belts or straps of the type mentioned at the outset, which requires assembly and / or Sorting the length of the belts or belts is superfluous and at the same time enables them to be shortened as required.

The invention is therefore based on the object, while avoiding the above-described disadvantages of corresponding turnbuckles for belt straps, a very simple, insensitive, inexpensive to produce and ergonomically extremely easy and safe to use device for shortening and / or attaching straps or belts made of flat fabric when looping and lifting specify a load that is suitable for high load ranges that are far above the permissible load ranges of known turnbuckles and similar belt connectors etc.

The device, which of course has to meet the high safety requirements of recognized rules for the technical handling of slings, should enable the use of unassembled strap or strap material without difficulty, with particular emphasis being placed on the possibility of easily shortening or lengthening a strap to be attached for high loads becomes.

The object is achieved with the invention in a device for shortening and / or on beat bands or belts of flat fabric of the type mentioned in that it has a vertical base plate with a crane eyelet arranged at its upper region and the base plate has at least three mutually perpendicular deflecting bodies with free ends, which they at least partially and partly double-layered, shortenable belt ends are designed and arranged to deflect in a meandering manner.

The device designed according to the invention is advantageously characterized in that, in particular in the basic version (for example in accordance with FIGS. 1 or 3a to 3d), it has no moving parts. As a result of the meandering wrap of the deflecting bodies through the webbing, this results in a self-locking effect in the double-layer deflecting areas along the wrapped surfaces of the deflecting bodies, without the belt or the belt having to suffer punctiform or linear surface pressures or sharp deflections at any point . This alone results in an extreme protection of the band material, because no locally concentrated clamping forces can act on it, as is the case with most of the known locks or buckles and similar connecting elements for belts.

The insertion of the strap or belt into the device is extremely simple, problem-free and ergonomically favorable, in particular in that the deflecting bodies protrude from the base plate with free ends and the strap can be inserted or inserted between the deflecting bodies simply or twice practically effortlessly. No "threading" is required as with devices that are not open to the outside. In addition, the device is easy to manufacture and inexpensive to manufacture, comparatively small in size and weight, and it essentially consists of a robust welded construction of simple shape. One embodiment advantageously provides that on both sides of a vertical plane of symmetry spanned vertically on the base plate in a double row, two rows of essentially opposite deflecting bodies are provided at approximately equal transverse distances from the plane of symmetry.

The device is thus extremely straightforward, compact, it meets the legal safety regulations and can be operated effortlessly and safely. Furthermore, no maintenance is required because the basic version of the device does not have a single moving part. Bands with unassembled ends can be shortened on it.

A further embodiment advantageously provides that the two rows of the deflecting bodies forming the double row are arranged from top to bottom with advantageously linearly decreasing transverse distances from the plane of symmetry forming a configuration at an acute angle to the latter, and between these a configuration that is movable in the vertical direction. and detachable wedge-shaped body with clamping surfaces parallel to the surfaces of at least two deflecting bodies in each case, and arranged and designed with manually operable means for arbitrary upward and downward movement. This alternative embodiment of the basic form of the subject matter of the invention is also uncomplicated and functionally safe, and is also easy to use. It has the advantage that the belt only has to be wrapped around the deflecting element in a simple and not double-layered manner, and that the clamping effect can also be applied in a metered manner and, if necessary, can also be released in the event of tension in the belt, by manual intervention. This can be the case, for example, when a wrapped bundle of pipes or logs or similar stacked goods still exerts lateral forces on the wrapping belt when the hook is loose.

However, it must be said in this connection that the basic shape of the device according to the invention is also very suitable for this type of use.

A further advantageous embodiment provides that in the case of a series of deflecting bodies, the upper and lower in each case being arranged in a line parallel to the plane of symmetry or oriented at an acute angle to this, the respective middle body of these lines is offset by an amount in transverse distance from Plane of symmetry is arranged offset to the outside.

As a result, the meandering deflection of the band can be more or less pronounced in a simple manner and depending on the arrangement of the middle deflecting bodies. With the help of this design option, the person skilled in the art will optimize the clamping forces in accordance with the other device parameters.

It is provided that the amount of the offset has an order of magnitude of between 2 and 20 mm, preferably between 4 and 8 mm. The deflection bodies are very advantageously designed as cylindrical bolts and welded to the base plate. This results in an extremely uncomplicated and compact design. Otherwise, instead of solid material bolts, thick-walled pipes can also be provided as deflection bodies, as is shown by way of example in FIG. 1.

A further embodiment provides that the middle deflecting body is one that is transverse to the plane of symmetry Surface element in the form of a rib projecting from the base plate and transverse to the plane of symmetry with a rounded belt contact surface. This measure also simplifies the design of the device while increasing its stability.

It is further provided that the base plate has a reinforcing rib coinciding with the plane of symmetry. On the one hand, this rib makes it easier to insert the belt because it can only be inserted from the outside, and at the same time it increases the resistance moment of the base plate against deflection, so that the base plate can be made thinner and lighter.

It is further provided that the height of the deflecting bodies corresponds at least to the width or bandwidth of the assigned belts / bands and is preferably between five and ten mm higher than this. This measure increases the safety of the inserted webbing. Another advantageous measure provides that the middle body is a few mm higher than the rest of the body and has a cap which preferably protrudes outward at its free end. This measure further increases the safety of the inserted webbing by fixing its seat or position in the device in the inserted state.

And finally, a further measure provides that the device with a pocket with training with only one row of deflecting bodies on one side of the plane of symmetry or the vertical reinforcing rib coinciding with it on the opposite side between the base plate and a cover plate parallel to it at a distance has two coaxial bores, which is formed and arranged with a continuous screw bolt with an axis perpendicular to the base plate and preferably with a spacer tube pushed inside the pocket for hanging a belt loop of the one shortenable belt end. Advantageously, this configuration gives the possibility, as shown in FIGS. 3a to 3d, to provide a further simplification of the device and its handling. As can be seen, the belt end with the loop always remains unchanged in the position held by the screw bolt, while the free belt end is placed around the deflecting body without a loop and then only needs to be shortened on this one side and finally to be firmly attached.

A different, also very advantageous embodiment of the device provides that when the deflection bodies are designed as cylindrical bolts, at least one of these bolts has an artificially roughened surface structure.

This significantly increases the coefficient of static friction between the surface of the deflecting body and a surface of the looped webbing lying against it and thus reliably maintains the holding ability of the device even under difficult operating conditions such as, for example, the effects of moisture or smearing of the band with grease and the like. Preferably, 2 or 3 cylindrical bolts can have such an artificially roughened surface structure, and this can be designed as a knurling. Knurling of this type has the advantage that it results in a very uniform roughening of the surface, which on the other hand can be produced using known manufacturing means and very inexpensively, for example on a lathe.

Furthermore, a very advantageous embodiment of a device according to the invention provides that the uppermost bolt or deflecting body is assigned a belt lock in the form of a rotary bolt. The rotary bolt will be formed with a shaft with a clamp body attached to it parallel to the axis of the shaft and this with a clamping surface parallel to the axis and a surface line of the bolt, and the shaft with an actuating wing opposite the clamp body and a restoring element in the form of a spring. A practical design provides that the shaft of the rotary bolt has an axis parallel to the bolt, the pivot point of which is located at a distance above the bolt. This alternative design of the basic form of the subject matter of the invention is similar to the design with a clamping wedge uncomplicated and functionally safe, and can be operated easily by hand. The design has the advantage that the belt only has to be wrapped around the deflecting element in a simple and not double-layered manner, and that the clamping effect can also be canceled if necessary by manual actuation even when the belt webbing is still in tension. In this way, the fixed strap stop can be loosened or released.

One embodiment provides that the rotary bolt with the clamping body has a width which essentially corresponds to the width of a belt. As I said, this alternative embodiment of the basic principle of the invention corresponds in terms of its function and the advantages resulting therefrom essentially to the version with a clamping wedge. However, it has the further advantage over the aforementioned solution with a clamping wedge that it can be carried out considerably more easily and with significantly less technical effort is.

Furthermore, in such an embodiment of the device, use can be made of the measure that the reinforcing rib coinciding with the axis of symmetry is extended upward beyond the base plate and is provided in the region of this extension above the base plate with a recess designed as a crane eye. This configuration results in an extremely robust, uncomplicated and compact design of the device.

Furthermore, an advantageous embodiment of the device provides that the base plate, if the device is equipped with only one row of deflecting bodies on one side of the plane of symmetry or the reinforcing rib coinciding with it, on the opposite side thereof has a preferably triangular surface part, which is arranged with the opposite one Deflecting parallel and essentially in the mirror-symmetrical position bolt with free one end for hanging a belt loop carries This design improves the ease of use, because it is no longer necessary to loosen a bolt or similar handling for hanging the loop.

A specialist familiar with the practical handling of slings in operation knows that the ergonomic

Quality of a device is very essential for its practical testing. With the design described above, the ergonomic quality of the device is improved.

Another alternative embodiment of the basic idea of the invention, deviating from the previously described embodiment, provides that the base plate at the lower area has a rearwardly recessed attachment with at least one joint with an axis perpendicular to the base plate and pivotably articulated thereon to a pivot plate parallel to the base plate and provided with deflection bodies with a handle arranged thereon for pivoting the swivel plate by hand and the base plate is designed with a recess in the form and function of a crane eye.

Due to the articulated arrangement of the stop bolts, a very uncomplicated type of stop is achieved on the one hand, because only two deflecting bodies have to be wrapped around with the free end of the band. The fact that the swivel plate adjusts itself in the direction of application of the force results in consistently good wrapping conditions between the belt and deflecting bodies under all conditions.

Furthermore, this embodiment has the advantage that the pivoting of the swivel plate by hand upwards can be used to release the strap from the belt. This is important in the event that bundle loads such as pipes, logs and the like are transported.

One embodiment provides in this embodiment that the base plate has a second joint parallel to the first, on which a second pivot plate is pivotably articulated, which carries a stud with a free end for attaching a belt loop. This configuration also facilitates the ergonomic handling of the device. This is otherwise very straightforward and accordingly requires a comparatively little technical effort to manufacture.

If the end of the belt, which can be shortened, is pretensioned when bundling a load collective, for example, of long material such as rods, logs or pipes, difficulties arise when attaching it as well as when releasing it, because the pretension in the looping area of the deflecting body causes holding and / or clamping forces, which a Pull through both when bundling by strapping the bundle as well as when relieving the loosened belt strap when the lowered bundle exerts spreading forces on the strapping it, make it considerably more difficult.

It is therefore further proposed in a device of the type mentioned in an independent embodiment that the middle deflecting element arranged in the space between the upper deflecting element and the lower deflecting element is displaceably guided in a plane which perpendicularly intersects a plane coinciding with the longitudinal axes of the two deflecting elements .

It is surprisingly achieved with this independent embodiment of the device that the lifting strap which is looped around the deflecting body as shown in FIG. 9 is held in the spaces between the deflecting bodies with load-proportional holding forces, as long as the displaceability of the middle deflecting body (to the left) is not opposed by any counterforce. This is because the middle, displaceable deflecting body is pulled into the space between the two fixed upper and lower deflecting bodies by the belt strap when the load is applied, and with greater force the more weight acts on the belt strap. This results in a load-proportional clamping, wrapping and holding effect of the webbing in effect area of the wrapping body, which holds the band struck in the device absolutely securely. One embodiment advantageously provides that the deflecting body, which is designed to be laterally displaceable, is designed with guide elements fastened to it and arranged with its axes parallel in the plane, and these are guided in the central rib of the device, through holes.

Essential to the invention, a reset device is also assigned to the guide elements. The resetting device can counteract the clamping force of the displaceable deflecting body. Thus, the webbing can be pulled out of the looping and clamping area of the deflecting body without any problems even if the tension is still present. On the other hand, in order to be able to pull the belt webbing even when it is pre-tensioned and by overcoming it through the deflection area of the deflection body while shortening, for example when strapping a load bundle, it is further provided in an embodiment essential to the invention that the reset device is designed with a locking catch. If the displaceably guided deflection body is then moved out of the holding position (to the right) with the aid of the reset device and its locking catch, a belt strap can also be used to counteract pretensioning forces the now opened deflection area of the deflection bodies, which are no longer in operative connection, can be shortened, for example with an auxiliary device such as a ratchet. For this purpose, the resetting device can also be designed very advantageously in such a way that a threaded spindle for driving the deflecting body is arranged between the guide elements, and preferably halfway up the displaceable deflecting body, and is mounted in a bore in the center rib and rests against it supports a shoulder and engages with the free thread end in a threaded hole in the middle deflecting body and has a movement element such as a handwheel or the like at the opposite end. Now the displaceably designed deflection body can be moved out of its clamping position, for example by turning the threaded spindle to the left, and also against the action of a counterforce exerted by the belt.

• Figur 1 eine Vorrichtung in Ansicht von vorn,
• Figur 2 eine abgeänderte Ausführung einer Vorrichtung, ebenfalls in Ansicht von vorn,
• Figur 3a eine Frontansicht einer vereinfachten Aus­führung der Vorrichtung,
• Figur 3b eine Seitenansicht der Vorrichtung nach Fig. 3a von rechts,
• Figur 3d eine Seitenansicht von der linken Seite,
• Figur 4 eine Alternativausführung der Vorrichtung mit einseitiger Anordnung von Umlekkörpern sowie mit einem Drehriegel und mit einer Kranöse ausgebildeter Mittelrippe, in Frontansicht,
• Figur 5 eine Vorrichtung gemäß Fig. 4 in perspekti­vischer Darstellung,
• Figur 6 eine Alternativausführung der Vorrichtung mit in Gelenken angeordneten Schwenkplatten, in Frontansicht,
• Figur 7 die Vorrichtung gem. Fig. 6 in Seitenansicht,
• Figur 8 die Vorrichtung gem. Fig. 6 und Fig. 7 in einer Ansicht schräg von hinten und in pers­pektivischer Darstellung,
• Figur 9 eine Vorrichtung in Ansicht von vorne,
• Figur 10 eine Vorrichtung gemäß Fig. 9 in Ansicht von der Seite,
• Figur 11 eine andere Ausgestaltung der Vorrichtung, in Ansicht von vorne,

The invention is shown in schematic drawings in a preferred embodiment, further advantageous details of the invention being apparent from the drawings. The drawings show in detail:

• 1 shows a device in front view,
• FIG. 2 shows a modified version of a device, likewise in a view from the front,
• FIG. 3a shows a front view of a simplified embodiment of the device,
• 3b shows a side view of the device according to FIG. 3a from the right,
• FIG. 3d shows a side view from the left,
• FIG. 4 shows an alternative embodiment of the device with a one-sided arrangement of deflecting bodies and with a rotating latch and a central rib designed with a crane eye, in a front view,
• 5 shows a device according to FIG. 4 in a perspective view,
• FIG. 6 shows an alternative embodiment of the device with swivel plates arranged in joints, in front view,
• Figure 7 shows the device. 6 in side view,
• Figure 8 shows the device. 6 and FIG. 7 in a view obliquely from behind and in a perspective view,
• FIG. 9 shows a device in front view,
• 10 shows a device according to FIG. 9 in a view from the side,
• FIG. 11 shows another embodiment of the device, viewed from the front,

In FIG. 1, the device for shortening and / or attaching tapes or belts made of plastic fiber flat fabric has a vertical base plate 1 with a crane eye 3 arranged at its upper region 2. On this side, on both sides 9, 10 of a vertical plane of symmetry xx spanned vertically on the base plate 1, there are three deflecting bodies 5a, 6a, 7a, which project vertically from one another at distances 29, 30 from the base plate 1 on the right half 9 from the plane of symmetry xx and a further three deflecting bodies 5b, 6b, 7b each arranged on their left side or half 10. Essential to the invention, these deflecting bodies 5, 6, 7 projecting perpendicularly from the base plate 1 have free ends 50, 60 70, as shown in FIGS. 3b, 3c, 3d. Advantageously, this configuration of the deflecting bodies, which have free ends 50, 60, 70 projecting vertically from the base plate 1, results in insertion gaps 29, 30 for the belts 8 which are open to the outside between the deflecting bodies. These facilitate an obviously unimpeded insertion of a belt end 8 into this insertion gap, as can be clearly seen from the drawing. A complicated "threading", as would be necessary with a device closed on the outside of the deflecting body, and would not be possible with a belt with a loop, is essential to the invention Liche design of the interstices 29, 30 open to the outside enables or facilitates. The deflecting bodies 5, 6, 7 are designed and arranged in such a way that they deflect the shortenable belt end 8, which at least partially and partially wraps around them in two layers, in a meandering manner. Here, in the deflection areas and in particular where the belt end 8 overlaps with one another in two layers, mutual surface friction generates restraining forces by means of which the belt end 8 is held. These inhibiting forces are caused and conditioned dynamically, i.e. they increase with increasing tensile force on the belt 8. The greater the tension acting at the belt end 8, the greater the adhesive forces of the overlapping belt end 8 caused by the meandering wraps. This results in an advantage here that the band 8a, 8b for holding is not subjected to a locally high surface pressure, as is the case with known clamping devices, as a result of which the band would be damaged, but that in the device according to the invention the belt end 8 is not wrapped at any point local force effects exceeding the tensile forces are exerted on the belt end 8.

FIG. 1 shows an exemplary embodiment of the device in which a ver tical, on the base plate 1 vertically spanned plane of symmetry xx in a double row assigned to each other two rows 11, 12 substantially opposite deflector 5a, 6a, 7a; 5b, 6b, 7b in belt ends 8a, 8b, which are approximately the same from the plane of symmetry xx, in each half 9, 10 of the base plate 1 and abut against them. Another embodiment of the device is such that the two rows 11, 12 of the deflection bodies 5a to 7a; 5b to 7b are arranged from top to bottom with preferably linearly decreasing transverse distances from the plane of symmetry xx forming a configuration at an acute angle α to the latter, and between them a clamping body 13 which is movable in the vertical direction and can be moved up and down with at least two deflecting bodies to the surfaces 5a, 7a, 5b, 7b parallel clamping surfaces 14, 15 are formed and arranged and are designed with manually operable means 16 for arbitrary upward or downward movement. This is a further expedient embodiment of a device based on the basic principle of the invention. In addition to the adhesive forces, a comparatively gentle but effective additional clamping force can be metered by means of surface friction of band sections at the deflection points of the deflection bodies 5, 6, 7.

Furthermore, an embodiment provides that in a row 11, 12 of deflecting bodies 5 to 7, the upper 5 and lower 7 in each case being arranged in a line yy oriented parallel to the plane of symmetry xx or at an acute angle α, the middle body 6a , 6b of these lines yy is offset to the outside by an amount "B" in the transverse distance to the plane of symmetry xx. The amount of the offset can be of the order of between 2 and 20 mm, preferably between 4 and 8 mm. This can be clearly seen, for example, from FIG. 2. As a result of this offset, the deflecting body 5 to 7 can be changed or enlarged and the static friction that can be achieved thereby can be influenced within limits by deflection. An expedient and robust, and thus advantageous embodiment of the subject matter of the invention is achieved in that the deflecting bodies are 5 to 7 cylindrical bolts. However, as is shown by way of example in FIG. 1, they can also be designed as cylindrical, thick-walled tube sections. Because the deflection bodies have a high moment of resistance against bending transversely to the pulling direction of the belt ends 8a or 8b, one or the other configuration of the deflection bodies can be selected from case to case.

Although the cylindrical shape of the deflecting bodies results in an optimal spatial shape and function of the device, other cross-sectional shapes of the deflecting bodies 5 to 7 should also fall under the main claim of the invention. For example, a set or a single deflecting body can have a cross-sectional shape of a polygon such as a triangle, square, pentagon, hexagon, octagon, etc. Of course, the longitudinal edges that result between each abutting straight surface part must be carefully rounded in order to avoid overstressing the belt strap on the longitudinal edge.

If necessary, to name one example, if the deflecting bodies are designed with drawn hexagonal profile bodies, the tape 8a, 8b can be more strongly adhered to under otherwise identical design parameters of the device. Furthermore, the measure can also be taken that, as shown in FIGS. 1 and 3a, the central deflecting body 6 is a planar element that is transverse to the plane of symmetry xx in the form of a rib 4 protruding from the base plate 1 and transverse to the plane of symmetry xx with a rounded belt system or deflection surface 17 in the embodiment according to FIG. 1 with a double-sided stop a complete compensation of the the rib 4 acting belt forces and / or load reached, which is why it can be dimensioned comparatively lighter and slimmer. Furthermore, the base plate 1 can advantageously have a reinforcing rib 18 coinciding with the plane of symmetry xx. The height "H" of the deflection bodies 5 to 7, this dimension according to FIG. 3c representing the distance between the upper side of the base plate 1 and the free end 50, 60, 70 of the deflection bodies, corresponds at least to the belt width of the webbing 8a, 8b and is preferably between 5 and 10 mm higher than this. Furthermore, the deflecting bodies 5 to 7 are expediently sharpened with a phase in the region of their free ends 50, 60, 70, which makes it easier to insert the webbing 8a, 8b. The middle body 6a, 6b can be a few mm higher than the other bodies and have a cap 19 projecting outwards from the free end 60. This cap 19, which is drawn in dashed and thin lines in FIG. 3a, ensures that the belt 8a, 8b is always inserted correctly and cannot protrude beyond the free end 60, for example. This automatically ensures the correct seat of the belt strap on the other deflecting bodies 5a, 5b and 7a, 7b. This increases security when using the device.

And finally, one embodiment provides that the device, as shown by way of example in FIGS. 3a and 3d, is designed on only one side of the plane of symmetry xx or that coinciding with it when it is formed with only one row 11 of deflecting bodies 5a, 6a, 7a vertical reinforcing rib 18, on the opposite side thereof with a cover plate 20 parallel to the base plate 1 at a distance from a pocket 25 with two coaxial bores 22, 23, (Fig. 3b), preferably with a continuous screw bolt 24 with a perpendicular to the base plate 1 with a spacer tube 26 pushed on inside the pocket 25 is designed and arranged for hanging a belt loop 27 of the shortenable belt end 28. This design of the device is characterized by a particularly simple, clear and compact and inexpensive design and is extremely robust. It also makes handling easier, because the belt loop 27 represents the end 28 of the band which cannot be shortened and is therefore always unchanged, while only the other end 8a needs to be looped around the deflecting bodies 5a, 6a, 7a. This makes handling particularly easy and simple.

In order to be able to quickly change the belt loops 27, one can also replace the screw bolt 24 Plugs can be arranged, for example, with a handle through the bores 22, 23 and can be designed to be secured with a rotation lock of a design known per se. Such or a similar connection between the device and the belt loop by means of a plug-in fastening element can be present in this or a similar form as required.

Both in the previously described embodiments and also in those still to be described, in order to improve the static friction between the wrapping body and the belt, the deflecting bodies 5 to 7 can preferably have an artificially roughened surface structure 43 when embodied as a cylindrical bolt. This is then very appropriately designed as knurling 43.

In an alternative embodiment of the device shown in FIGS. 4 and 5, the uppermost bolt 5 or deflecting body is assigned a belt lock 13, 14, 15 in the form of a rotary bolt 13. This is with a shaft 31 with a fixed to the axis of the shaft 31 parallel clamping body 14 and this with a parallel to the axis and a generatrix of the bolt 5 clamping surface 15 and the shaft 31 with an opposing the clamping body 14 actuating wing 44 and a restoring element 45 designed in the form of a spring.

The shaft 31 of the rotary bolt 13 has an axis z-z parallel to the bolt 5 (see FIG. 5), the pivot point 32 of which is located at a distance above the bolt 5. 5 that the rotary latch 13 has a width Br which essentially corresponds to the width of a belt.

4 and 5 it can be seen that the embodiment with the rotary latch 13 is a very uncomplicated embodiment of the device according to the invention. Advantageously, the belt 50a is placed with its free end 28 only once and not twice around the deflecting bodies 5 to 7 and held tightly between the deflecting body 5 and the rotary bolt 13. The known bollard effect advantageously results in high static friction forces between the surfaces of deflecting bodies 5 to 7 and the adjoining surfaces of the webbing 50a. As a result, this remains immovably fixed with load-proportional adhesive forces in the looping area of the deflecting bodies, as long as the rotary wedge 13 holds the band end 28 clamped on a surface line of the deflecting body 5. However, as soon as the clamping force is released by hand by pressing the lever 44 against the force of the spring 45, the belt strap 50a or its end 28 can be pulled around the deflecting bodies 5 to 7 in both directions.

In the embodiments of the device according to the invention shown in FIGS. 4 to 8, the reinforcing rib 18 coinciding with the axis of symmetry x-x is extended upward beyond the base plate 1 and provided in the region of this extension 46 and a recess designed as a crane eye 3. A crane hook reaching through is identified by the number 51. This training obviously leads to a very uncomplicated and compact design of the device and reduces the cost of its manufacture.

A further embodiment shown in FIGS. 4 and 5 provides that the base plate 1, when only one row 11 of deflecting bodies 5 to 7 is arranged on one side of the plane of symmetry xx or the reinforcing rib 18 coinciding therewith on the opposite side thereof, is preferably one has a triangular flat part 33, which carries a bolt 34, which is parallel to the deflecting body 7 arranged opposite and is essentially in a mirror-image position to the plane of symmetry xx, for attaching a belt loop 27. As already explained above, this arrangement serves to simplify the ergonomic handling of the device and is therefore advantageous for practical use.

A further alternative arrangement of the device is shown in the figures 6 to 8 itself. In this case, the base plate 1 has a shoulder 37 with a joint 38 with an axis w-w which is perpendicular to the base plate 1 and which is designed to be set back. This is pivotally articulated on a pivot plate 40 which is parallel to the base plate 1 and provided with deflecting bodies 5c, 6c and has a handle 41 arranged thereon. The base plate 1 is in turn designed with a recess 42 in the form and function of a crane eye 3.

The alternative embodiment of the device thus obtained can also be designed such that the base plate 1 has a second joint 39 parallel to the first joint 38, to which a second pivot plate 49 is articulated. This carries a stud bolt 47 with a free end 48 for attaching a belt loop 27.

The parallel arrangement of the two swivel plates 40 and 49 can be seen from the rear view of FIG. 8. As the summary of FIGS. 6 to 8 shows, the strap 50a with the free end 28 is only wrapped around the two deflecting bodies 5c and 7c when the device is designed. 6, it can be seen that the outer belt strand 50a by force component in Direction of the part K presses the inner belt strand 28 with a load-proportional pressure against the contact surface of the deflection body 6c. As a result, the belt is clamped at this point and, in the looping area around the deflecting body 5c, also generates a looping force that is also proportional to the load. With the surface adhesion generated in this way, the belt 50a is immovably fixed in the looping area of the two deflecting bodies 5c, 6c and is therefore bound. By lifting the handle 41 by hand in the direction of arrow 52, this bondage can be loosened or loosened.

The device according to the invention is straightforward, robust and comparatively small in size in relation to the payload that can be accommodated. It is still clear, requires no maintenance and is extremely user-friendly thanks to its ergonomic design. In contrast to known clamping devices, the webbing is not damaged in it because it is not subject to crushing. In this respect, one can speak of an ideal solution to the task at the beginning.

In the device shown in FIG. 9, this has partial basic principles according to FIGS. 3 to 5 in accordance with the explanations a base plate 1, thereon a central rib 18 with a crane eye 3 and standing vertically on the base plate, with free ends, an upper deflection body 5 and a lower deflection body 7. In the space between these deflecting bodies 5 and 7, the deflecting body 6 is displaceably guided in a plane xx, this plane xx perpendicularly intersecting a plane yy coinciding with the longitudinal axes zz of the two deflecting bodies 5 and 7. The guide device of the displaceably designed deflection body 6 has guide elements 60a arranged parallel thereto with its axes in the plane xx. These are guided in bores 61 which penetrate the central rib 18. The guide elements 60a are preferably designed as cylindrical bolts. A reset device 62 is also assigned to the guide elements 60a. For example, as shown in FIG. 9, this can be an arrangement of two angle levers which can be pivoted about axis 72, lever 73 being provided for manual actuation. When this lever 73 is actuated in the direction of arrow 74, the displaceably designed deflecting body 6 is moved to the right from a position interacting with the deflecting bodies 5 and 7, the view in FIG. 9, the combined holding and clamping holding the lifting belt 50a forces are released or released. The reset device 62 is advantageously formed on the lever 73 with a locking ratchet 63. The embodiment of which is shown purely schematically in FIG. 9 and corresponds to the usual type of craftsmanship.

A further improvement of the device is shown in FIG. 11. In this embodiment, a threaded spindle 64 for driving the movement of the deflecting body 6 is arranged between the guide elements 60a, and preferably halfway up the displaceable deflecting body 6, and is mounted in a bore 65 in the central rib 18, the threaded spindle 64 being located by means of a shoulder present thereon 66 is supported in the axial direction against the guide bore 65 or against the central rib 18.

With the free thread end 67, the threaded spindle 64 is screwed into a threaded bore 68 of the middle deflecting body 6. At the opposite end 69, the threaded spindle has a handwheel as the movement element 70a, by means of which it can be set in a screwing motion. There can also advantageously be a second bearing 75 in the form of a bearing block with a bearing bore. The arrangement of the device according to the invention shown in FIG. 11 has the advantage that the displaceable deflecting body 6 can also be pre-tensioned by the belt 50a with the aid of the threaded spindle 64 Exercised restoring forces or positioning forces are moved out of the blocking position to the right in the direction of arrow 71 and can be held in this position as shown in FIGS. 9 and 11. Thus, a bundle of strapping belt 50a can be released without problems by screwing the deflecting body 6 by means of revolutions of the threaded spindle 64 after the load has been released on the ground, for example if the bundle should still exert tension forces on the lifting strap strapping it, for example as a result of a spreading in the strapping. Conversely, in the position of the deflecting body 6 shown in FIG. 11, a webbing can also be pulled through the open and out of action position deflecting bodies 5 to 7 and shortened, for example with a ratchet against the applied bias, and only then can the displaceable deflecting body 6 be rotated by corresponding spindle rotations is screwed back into the space between the deflecting bodies 5 and 7 to the operative position, after which, when the shear force of the threaded spindle 64 is released, the interaction of the three deflecting bodies 5 to 7 causes holding and clamping forces which are proportional to the load.

The device according to FIGS. 9 to 11 represents a further improvement of the device and thus surprisingly and simply overcomes the difficulties described at the beginning.

Claims (10)

1. A device for shortening and / or attaching straps or straps made of flat fabric when looping and lifting a load, the free ends of the straps or straps being inserted or threaded into the device and at least when shortening one of the strap ends, this is pulled through the device and then is firmly attached to the latter before the load is lifted, characterized in that it has a vertical base plate (1) with a crane eye (3) arranged on its upper region (2) and the base plate (1) at least three at intervals (29 , 30) from the base plate (1) projecting vertically projecting deflecting body (5, 6, 7) with free ends (50, 60, 70), which at least partially and partly double-layered around the shortenable belt end (8) meandering deflecting and are arranged. 2. Device according to claim 1, characterized in that on both sides (9, 10) of a vertical, on the base plate (1) vertically spanned plane of symmetry (xx) in a double row assigned to each other two rows (11, 12) substantially opposite deflecting body ( 5a, 6a, 7a; 5b, 6b, 7b) are present at approximately equal transverse distances from the plane of symmetry (xx). 3. Apparatus according to claim 1, characterized in that the two rows forming the double row (11, 12) of the deflecting body (5a -7a; 5b-7b) from top to bottom with preferably linearly decreasing transverse distances from the plane of symmetry (xx) one Configuration at an acute angle (α) are arranged to form this and between them a wedge-shaped clamping body (13) which can be moved and removed in the vertical direction and which has clamping surfaces (14) parallel to the surfaces of at least two deflecting bodies (5a, 7a; 5b, 7b) , 15) is formed and arranged and is designed with manually operable means (16) for arbitrary upward or downward movement. 4. The device according to claim 1, characterized in that in a row (11 or 12) of deflecting bodies (5-7), each of the upper (5) and the lower (7) in a parallel to the plane of symmetry (xx) or at an acute angle to this aligned line (yy) by an amount (B) in the transverse distance to the plane of symmetry (xx) is offset to the outside. 5. The device according to claim 4, characterized in that the amount (B) of the offset has an order of magnitude of between 2 and 20 mm, preferably between 4 and 8 mm. 6. The device according to claim 1, characterized in that the deflecting bodies (5-7) are cylindrical bolts. 7. The device according to claim 1, characterized in that the middle deflecting body (6) is a transverse to the plane of symmetry (xx) surface element in the form of a from the base plate (1) projecting to the plane of symmetry rib (4) with a rounded belt contact surface (17) . 8. The device according to claim 1, characterized in that the base plate (1) has a with the axis of symmetry (x-x) coinciding reinforcing rib (18). 9. The device according to claim 1, characterized in that the height (H) of the deflecting body (5-7) corresponds at least to the belt width or bandwidth of the assigned belts or bands and is preferably between 5 to 10 mm higher than this. 10. The device according to claim 1, characterized in that the central body (6) is a few mm higher than the other bodies (5 or 7) and one of its free end (60) preferably projecting outward cap (19).

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