• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    lifting cylinder and rope pulley for fiber rope controllers. the present invention relates, in general, to rope controllers operating with high strength fiber ropes such as crane elevations, boom adjustment gear, pulley travel gear, etc. in this regard, the present invention applies in particular to the lifting cylinders for the rope lifting winch of such fiber rope controller which has a cylinder liner body which is provided with a groove on the peripheral side and which has two protection plates adjacent to the cylinder liner body on the end sides. the present invention further relates to a rope pulley for such a fiber rope controller which has a pivotally supported pulley body whose casing surface has at least one rope groove. according to the invention, the rope grooves have a pressed, round groove contour that differs from the circular contour and which has a greater proportion of curvature in the region of a groove base than in the region of a groove flank adjacent to the groove. same.
    公开号:BR112013018722B1
    申请号:R112013018722-0
    申请日:2012-01-24
    公开日:2020-12-15
    发明作者:Mupende ILAKA；Horst Zerza
    申请人:Liebherr-Components Biberach Gmbh；
    IPC主号:
    专利说明:

    [001] The present invention relates, in general, to rope controllers that work with high strength fiber ropes such as crane elevations, boom adjustment gear, pulley travel gear, etc. The present invention, in this regard, in particular applies to lifting cylinders for the rope lifting winch of such fiber rope controller which has a groove cylinder liner body which is provided with a groove on the peripheral side and which has two protection plates adjacent to the cylinder liner body on the end sides. The present invention also relates to a rope pulley for such a fiber rope controller that has a pivotally supported pulley body whose casing surface has at least one rope groove.
    [002] An attempt has been made for some time, in particular, with cranes, to replace the usual high-strength steel fiber ropes which consist of high-strength synthetic fibers such as aramid fibers (HPMA), mixtures of aramid / carbon fiber, high modulus polyethylene (HMPE) fibers or poly (p-phenylene-2,6-benzobisoxazole) (PBO) fibers which comprise at least such fibers. Since the weight of a rope that is taken into account for the payload is less, the allowable payload or lifting load can be increased due to the weight reduction in the steel ropes. In particular, with cranes that have large lifting heights or boom or mast adjustment gear using pulley blocks with a high number of windings, considerable lengths of rope and thus also an increase in weight of the corresponding rope for that the possible weight reduction through high strength fiber ropes is quite advantageous.
    [003] However, the predisposition to wear and the safe recognition of the state of disposal have been problematic with such high strength fiber ropes until today. With the same diameter as the rope, steel ropes and fiber ropes with high strength of synthetic fibers have almost the same extensible strength; however, steel cables have significantly higher hardness than fibers from high strength fiber ropes. A transverse compressive stiffness of the high strength fiber ropes results from this, which ropes are substantially softer and therefore not as resistant to wear as steel ropes, if the rope is wound on a cylinder or extends over rope pulleys, which can result in much higher wear on high strength fiber ropes.
    [004] In this regard, the region in which the lifting rope is wound over or outside the lifting cylinder in one or more layers, as well as the region by which the rope extends around a rope pulley are particularly susceptible to wear. If the rope is wound over the casing body of the lift cylinder with load on the first layer, a relative movement is generated between the groove of the cylinder and the rope due to the stretching of a rope. A similar behavior is generated with a multilayer winding, then there is a sliding of rope over rope, which also results in friction and wear. Another region of wear is the change of rope layer when the rope is deflected by the cylinder protection plates.
    [005] To reduce friction wear, steel ropes are, as a rule, already lubricated in a set of ropes, with regular regreasing also being necessary during operation. A small coefficient of friction is obtained by means of this lubrication and thus, little is reduced from the wear on the winding of the ropes, especially the friction of a rope towards the body cylinder, the friction of rope on rope and the friction during the journey over the protection plate or the path over the rope deflector. The same applies to rope pulleys. In this way, a lubricated steel-to-steel slip has the great advantage of a low coefficient of friction and thereby low wear. This lubrication advantage cannot be used when using plastic fiber ropes in conjunction with the lifting cylinders and rope pulleys.
    [006] With the lift cylinder construction model for multi-layer enlargement being more often used on cranes, the cylinder liner body is designed with a special groove which allows complete winding in a plurality of layers. In this regard, the groove has two opposing spacing regions when viewed over the circumference of the cylinder and which has an extension region of around 90 ° in each case, as well as two parallel regions which are similarly arranged opposite and likewise they have an extension of around 90 ° in each case. Each of the spacing regions, in this respect, provides a deflected groove about half the diameter of the rope.
    [007] Conventional lifting cylinders of said type are known, for example, from DE 101 32 611 A1 in which the spacing regions provided between the parallel regions have intricated grooves to allow an upward winding of a rope in a forward direction both clockwise and counterclockwise. In addition, a lifting cylinder is known from DE 10 2005 004 816 A1 in which only the parallel region is in fact provided with a groove, while the spacing region is formed without grooves so that the rope sections are offset in a way oblique lay on a smooth, grooved surface. In addition, DE 20 2008 011 359 U1 describes a lifting cylinder for a crane lifting gear, in which a travel guide is associated with the lifting cylinder in the travel region of a rope and it is formed from two opposing rollers leaving at the same time a free space whose width largely corresponds to the diameter of the rope. Said rope guide can be moved transversely, that is, parallel to the geometric axis of rotation of the lift cylinder, to guarantee the desired winding quality. However, the problems previously addressed about increased rope wear while using high strength fiber ropes, remain unsolved in these already known lifting cylinders.
    [008] Therefore, the underlying objective of the present invention is to provide an improved fiber rope controller, an improved lift cylinder for such fiber rope controller and / or an improved rope pulley for such fiber rope controller, which avoids the disadvantages of the prior art and advantageously develop the latter further. Wear on highly resistant fiber ropes must be reduced in particular without impairing the winding quality.
    [009] This objective is achieved according to the invention and by means of the lifting cylinder according to claim 1, by a rope pulley according to claim 13 and by a fiber rope controller according to claim 15 Preferred embodiments of the invention are the subject of the dependent claims.
    [0010] It is proposed, therefore, the possibility of changing the cross section which occurs under transversal load in high strength fiber ropes and adapting the groove of the lift cylinder and / or a rope pulley to this change and neither even trying to keep the rope in that ideal cross-section and typically circular by means of support. According to the invention, the rope grooves have a flat, round groove contour which differs from the circular contour and which has a greater proportion of curvature in the region of a groove base than in the region of a groove flank adjacent to the groove. same. In this respect, a deviation is made in relation to the previously custom trajectory of support of the rope, which has a circular cross section before the path over the groove cylinder with a circular contour over the lift cylinder; the consideration more properly forms the starting point at which a fiber rope is no longer tensioned after extending over the lift cylinder, but which is also subjected to transverse forces and, consequently, an ovalization of the cross section of the rope is adopted. The rope groove is no longer adapted to the ideal cross section of the rope, typically circular under a purely tension load, but to the current cross section of the rope under an extensible load and a cross load on the lift cylinder. A more uniform, better distributed pressure load can be achieved thereby, which can reduce the wear of a fiber rope.
    [0011] In a further advantageous development of the invention, the flattened groove contour can have an approximately oval or oval shape or also an elliptical shape when the groove contour is observed in cross section. The transition regions between two adjacent grooves are also advantageously rounded having a radius that is as wide as possible so that no angular pressure occurs on the cross section of the rope even with the withdrawal of a rope slightly deviated to the groove . As an alternative to said oval contour of the rope grooves, a groove contour can also be provided, which has a flattening at the base of the groove and / or has polygonal folds seen in cross section whose surface segments are approximately flat they are defined at a flat angle and preferably combine with each other in a rounded shape. However, the surface segments, which include the flattened portions, are also in this case advantageously arranged in such a way that a surrounding surface located therein has a greater proportion of curvature as mentioned above in the region of a base of the groove than in the region of a groove flank adjacent to it and / or a greater proportion of curvature than the rope in its initial undeformed and circular state.
    [0012] The degree of flattening or pressing of the groove contour can be adapted to the respective model and to the structure of a fiber rope and its transversal deformation. A good solution for the different types of fiber ropes comprises, in a further development of the invention, that the ratio of groove width and groove depth is selected in the region from 3 - 7, preferably 4 - 6, and in particular approximately 5, that is, with a provided groove width of 10 m, for example, the groove depth would amount to 2 m. In this case, the groove depth is understood as the distance from the smallest point in a groove from an imaginary straight line of connection that joins the two flank peaks.
    [0013] Alternatively or additionally, the groove contour can be made in such a way that the spacing of a groove, that is, the spacing of the centers between two adjacent grooves, makes approximately 104% to 111%, preferably approximately about 106% to 110%, in particular, preferably 108%, of the median diameter of the string when it is measured with a circular, non-deformed cross-section of the string. Said groove spacing or the distance between the spacing of a groove is advantageously combined with the adopted ovalization of the cross section of the fiber rope.
    [0014] To minimize the friction wear that occurs on wake up depending on the friction between the cylinder surface and the rope surface as a consequence of the rope stretching during the upward winding on the lift cylinder, the groove and / or the parts of the lift cylinder which contact the rope are advantageously provided with low friction, preferably a surface approximately free of friction so that the rope can slide over the groove surface or the wear-free protective plate surface. Such a low friction surface can be achieved by carefully working the surface, for example, by polishing or grinding, and / or by matching the surface coating. In general, such a friction-reducing model of the cylinder surfaces that contact the rope also results in considerable advantages without the ovalized groove contour mentioned above, however, it can also be used, in particular, in conjunction with said ovalized contour of slot. Advantageously, the surfaces that contact the lift cylinder rope, in particular the groove and the protective plate are carefully machined and / or coated on their surface in the deviation region provided therein so that the average roughness Ra make less than 1 μm, preferably less than 0.35 μm, in particular from approximately 0.15 μm to 0.18 μm.
    [0015] If the cylinder surface that contacts the rope is provided with a friction-reducing surface coating in the manner mentioned above, a plastic coating can be used in particular. Advantageously, the surface coating is not only reducing friction, but also damping in order to reduce pressure peaks on the surface and / or wind blows on the extended rope.
    [0016] In a further advantageous development of the invention, the surface coating can be of a multilayer model, advantageously having a higher layer of coating being friction reducing, while at least one layer of coating that rests directly or indirectly underneath that layer is cushioning.
    [0017] For example, a plastic liner can, for example, be vulcanized over a cylinder liner body made from steel, for example, to generate a damped rope path and a low coefficient of friction for the rope. Alternatively or additionally, composite models of the cylinder body are also possible, for example, from composite and fiber-reinforced materials such as GRP and CFRP, which can also be optionally combined with steel sheet metal layers, with optionally plastic coatings, of the type mentioned above, can also be applied to such a composite cylinder. Alternatively, purely plastic cylinders can also be used, for example, from fiber-reinforced plastic such as GRP and CFRP.
    [0018] Generally, the groove of the cylinder liner body may have different designs. For example, a groove that is conventional per se could be provided which has, when viewed over the circumference of the cylinder, two opposing arranged intersection and spacing regions and two oppositely disposed parallel regions, in which said spacing and spacing regions are located. parallel regions can be formed at an angle of approx. 90 °, that is, they can extend around 90 ° of the circumference of the cylinder in each case. In this regard, the spacing of the groove in each spacing region changes to about half the diameter of the rope, in which the ovalized contour of the groove of the ovalized and pressed diameter of the rope has to be used with base.
    [0019] In yet another advantageous development of the invention, however, a groove can be provided only with a spacing region and a parallel region, in which the grooves are deflected around the entire diameter of the rope in said spacing region, in which the ovalized and enlarged rope diameter should also be advantageously used again as a base. Only one region of intersection is generated thereby, when viewed over the circumference of the cylinder. This allows for low cost winding and good quality of the multilayer rope which has a high wind quality and little rope wear.
    [0020] To reduce the wear of a rope during the diversion to the next layer on the protection plates, a rope diverter that has an extension preferably with multistage can be provided on at least one of the protection plates. By using such a rope diverter on the guard plate, the rope is prevented from spiraling up on the guard plate and then falling abruptly onto the winding plane and, therefore, it is ensured that the rope is immediately guided inwards. of the next layer when it reaches the protection plate. In this respect, the rope diverter is arranged in such a way that it deflects the rope back into the next layer of rope at the end of the cylinder rope groove or at the end of a rope layer, in which the strength or thickness of that rope rope diverter can be based on the angle of deviation of the rope over the cylinder, where a thicker diverter of rope is provided with a smaller angle of deviation than with greater angles of deviation. Depending on the angle of deviation, the thickness of said rope diverter can be in the range between 5% and 50% of the diameter of the rope.
    [0021] The said multistage extension is advantageously configured so that an appearance of a deviation section in the shape of a bowl allows a deviation section to extend in parallel and that this is followed by a deviation section that extends in parallel, in each case directly or indirectly with the interposition of other sections of deviation and / or cuts. In a further development of the invention, a rope diverter that has three sections visualized on the circumference can be supplied in particular on the respective protection plate, where among the three sections, a first section has a parallel flank with the plane of rotation that is found. if perpendicular to the geometric axis of the cylinder, a median section has a gutter flank that appears in gutter format and a last section in turn has a parallel flank.
    [0022] In yet another alternative development of the invention, a two-stage bypass extension can be provided in particular so that the rope diverter has, in addition to said sloping deviation section in the shape of a bowl, another bypass section that it has a parallel flank, which extends substantially parallel to the plane of rotation that is perpendicular to the cylinder geometrical axis, in which said parallel flank can be joined to said flank in radius inwards or radially outwards. In a further preferred development of the invention, in this regard, said parallel flank on the protective plate is provided radially within the flank so that the rope that extends over the protective plate extends first over the parallel flank and then is deflected by the cuff flank again inward only when reaching the cuff flank. With such an extension of deviation having two stages, said parallel flank and said cuvette flank can extend in each case in an order of magnitude of about 40% to 60% of the height protection plate.
    [0023] In accordance with yet another alternative embodiment of the invention, the protection plate can also have a deviation extension substantially with only one stage, with a flank in cuia being provided with such a configuration with a single stage which extends substantially over the entire height protection plate.
    [0024] Depending on the configuration of the deviation extension, the side flange in a bowl can adopt different spacing angles. A flank at an angle, which works advantageously for different configurations, can be found, in a further development of the invention, in the range from 2 ° to 6 °, preferably around 2 ° to 4 ° .
    [0025] Said parallel flanks and flanks in gourd or parallel / gourd sections can extend over differently sized protection plate sections. According to an advantageous embodiment of the invention that has a multi-stage bypass extension of the type mentioned above, the rope can extend, when it extends through the protection plate, in parallel and outwards in a first stage about around 30% to 60% of the protection plate proportion, while to another extent, around 60% to 80% of the proportion, the roundly extending gourd surface deflects the rope inwards, said gourd surface advantageously growing in a flat curve to thickness around 5% to 50% of the rope diameter. Another region that extends in parallel then follows to the annular surface of the directed gourd which can optionally be configured in a spiral in the circumference. All transitions between different sections of a color diverter are advantageously rounded in a notch-free way.
    [0026] In order to also keep the rope wear level low at the pivot point of a lifting cylinder rope, a tight fixation of a rope at the point of attachment is dispensed with in another development of the invention, and instead a fixation in shape loop of a rope is provided. A means of securing the end of the rope to the lift cylinder may in particular comprise an abita type rope fastening, for example, in the form of a tap, a screw or a pipe glove, in which a rope end loop, supplied at the end of the rope can be hung. Said loop at the end of the rope can advantageously be made in the rope and / or it can be formed by interlacing.
    [0027] The invention will be explained in more detail below with respect to a preferred modality and the associated drawings. Drawings are shown in which:
    [0028] Figure 1 is a schematic and perspective representation of the lift cylinder according to an advantageous embodiment of the invention which shows the groove in the cylinder liner, the rope deviation flanks, provided on the inner side of the protection plates and fixing the end of the rope by means of a loop at the end of the rope;
    [0029] Figure 2 is a schematic and perspective representation of the lift cylinder from a different direction of view, which shows the groove in the cylinder liner and the conduction of one end of the rope through the protection plate;
    [0030] Figure 3 is a schematic and perspective representation of the lifting cylinder of the previous Figures in a sectional view which shows the transition region between the cylinder liner body and the protection plates adjacent to it on the end sides. ;
    [0031] Figure 4 is a longitudinal section through the elevation cylinder of the preceding Figures, which shows the connection of the protection plates to the cylinder liner body and the transition region provided at the location between the liner groove and the deviation. rope worshiper on the protection plates;
    [0032] Figure 5 is an enlarged and detailed sectional view of the groove cylinder;
    [0033] Figure 6 is an enlarged and detailed sectional view of the transition region between the cylinder liner body and protection plate, which shows the rope diverter provided on the protection plate in another region; and
    [0034] Figure 7: is a schematic side view of a rope pulley according to an advantageous embodiment of the invention, which shows the oval shape of the groove.
    [0035] The lifting cylinder 1 shown in the Figures roughly comprises the cylindrical body of the cylinder liner 2 to whose axial ends the respective protection plates 3 are connected and which, roughly, extend perpendicularly in relation to the longitudinal geometric axis of the cylinder and project radially outwardly from the cylinder surface of the liner and have a much larger diameter than the liner of the liner.
    [0036] The lifting cylinder 1 shown can be used, in this regard, in particular in the lifting gear of a crane such as a crane with a rotating tower or a mobile telescopic crane or boom or mast adjustment gear, but also in other lifting winches.
    [0037] Said protection plates 3 can generally be connected in different ways to the cylinder liner body 2. For example, a single piece production would be conceivable with, however, protection plates 3 being advantageously able to be joined subsequently to the cylinder liner body 2. In the illustrated embodiment, the protection plates 3 are placed on the cylinder liner body 2 on the end face and are secured using a screw fixing means.
    [0038] The cylinder liner body 2 is provided with a groove 4 whose rope grooves 5 extend over the entire cylinder liner body 2, cf. Figures 1 and 2. Said groove 4 may have, in this respect and in the illustrated embodiment, advantageously only an intersection region or a spacing region in which the rope grooves 5 have groove spacing around all the diameter of the string. In the remaining circumferential region, the rope grooves 5 extend substantially parallel to a plane in each case that is perpendicular to the longitudinal geometric axis of the cylinder so that groove 4 has only one rope intersection region and only one global parallel region.
    [0039] As can be seen in Figure 5, the rope grooves 5, when viewed in cross section, have a pressed contour, in particular, an approximately oval or ovalized contour of groove 6 that differs from the circular shape. The groove contour 6, based approximately on an oval contour or an oval segment, includes, in this respect, a flattened portion or a region with a much greater curvature ratio R2 in the region of a groove base 7, while in the region of the flanks with adjacent slot 8 on the right and left, a much lower curvature ratio R1 or R3 is respectively provided as is known with the oval or elliptical contours. In the illustrated embodiment, the ratio of groove width B and groove depth T is around 5, with this proportion of width and depth being able to be selected differently depending on the transversal deformation properties of a fiber rope, for example , in the range from 3 - 7, preferably 4 - 6, to obtain the best possible adaptation to the cross section of the rope that deforms under transversal pressure in the lift cylinder.
    [0040] The spacing or groove spacing of a groove 4 is designated by A in Figure 5 and is similarly combined with the cross section of the pressed and ovalized rope, which is adopted with transverse pressure on the rope. Said groove spacing A advantageously amounts to around 104% to 111%, preferably around 106% to 110%, in particular, preferably 108%, of the diameter of the string when said diameter of the rope that is assumed to circulate in an idealized way and with a purely extensible load.
    [0041] To reduce the friction between the rope and the cylinder surface which is also generated with an ideal upward winding due to the stretching of the rope, the surfaces that contact the rope are sharpened, polished or carefully machined otherwise, in particular , in the region of a groove 4 and the inner surfaces of the protective plates 3, in order to obtain a very small coefficient of friction and / or very small medium roughness depths. Such careful machining of the surface may be particularly reasonable when the lift cylinder is made of steel or other metallic material, but it may also be provided with other material options for the lift cylinder.
    [0042] Alternatively or additionally, the surface that contacts the lifting cylinder rope 1 can be provided, in particular, in the region of a groove 4 or in the region of the inner sides of the protection plates 3, of a surface coating friction reducer and / or stiffness reducer, for example, in the form of a plastic coating applied by means of vulcanization or a carbon-additive plastic, which advantageously is not only a friction reducer, but also a damper to cushion or reduce wind blows on the rope and / or pressure peaks on the local surface. Advantageously in this regard, a multi-coated or multilayer surface coating can be provided, in which a damping coating of a soft, elastic rubber or otherwise deformable material is applied under the friction reducing coating disposed on the surface. Alternatively or additionally, the resistance providing body or the lifting cylinder body part can also be produced entirely with plastic, for example, fiber-reinforced plastic such as CFRP or GRP. As mentioned above, other composite buildings can also be provided.
    [0043] To also reduce wear when changing a layer of rope when the rope is deflected by the protection plates 3, rope diverters 9 are provided on the inner sides of the protection plates 3 and advantageously have a deviation extension over a plurality of stages. At the end of the liner groove or at the end of a rope layer, said rope diverter 9 comprises a deflection flank which is provided on the inner side of the corresponding protective plate 3 and which extends at first in a first section of deviation 90a in parallel with the plane of rotation which is perpendicular to the longitudinal geometric axis of the cylinder and which can extend, for example, about 30% to 60% of the radius of the cylinder. In a second deflection section 90b, said deflection flank then combines with the gourd surface which presses the inwardly extending rope. This inwardly ringed gourd surface is followed by another deflection section 90c in which said deflection flank can, in turn, advantageously extend in parallel with said plane of rotation perpendicular to the longitudinal geometric axis of the cylinder. Said cuvette flank of the central deflection section 90b may extend inwardly inclined at an angle of inclination α of some degrees, preferably around 2 ° to 6 °, cf. Figure 6, and in this respect it can occupy a region of about 60% to 80% of the radius of the plate.
    [0044] As an alternative to the modality described and shown in the partial view (a) of Figure 6, said rope diverter 9 can also have a deviation extension with only two stages, as shown in the partial view (b) of Figure 6 The deflection flank can in particular have an internal deflection section 90a in which the deflection flank extends parallel to the plane of perpendicular rotation on the longitudinal geometric axis of the cylinder. Said internal deflection section 90a can occupy, in this respect, about half the height of the protection plate 3. Another deflection section 90b can be provided adjacent to the old section radially outwards and in it the deflection flank can form the surface of gourd which is tilted in the manner mentioned above at angle α, cf. Figure 6, partial view (b). Said cuvette flank of section 90b may extend over the outer half of the height protection plate.
    [0045] Thus the partial view (c) of Figure 6 shows, the diverter decord 9 can also substantially only have a deviation section 90b, which in this case is advantageously formed as a flank in a bowl, which is inclined to in angle α to press the string that extends over and back inward. In the embodiment according to Figure 6 (c), the flank in gourd extends substantially over the entire height of the protection plate 3.
    [0046] The fixation of one end of the rope to the lift cylinder 1 can be seen from Figure 1. The rope 10 is guided in a region of rope path which Figure 2 shows, through a rope conductor in the form of a cut in the protection plate 3 through said protection plate 3 on its external side. The rope 10 is fixed or hung in an abita-type fastening means of the end of the rope 11 on the outer side of said protection plate 3. For this purpose, the rope 10 has a loop at the end, which is advantageously formed by interlacing means and which is hung over the abita-type rope fastening 12. The rope 10 can be guided through the rope guidance means 13, cf. Figure 1, which are located on the outer side of the protection plate 3, between the point of attachment of the end of the rope, which is defined by said rope fixation of the abita type 12, and the rope conductor, mentioned above from through the protection plate 3. A loop on the rope can be attached by a plate with a diameter adapted to the rope loop of said abita type rope fixing 12, said plate being attached, for example, by means of a connection spacer on the outer side of the protection plate 3 so that a sufficiently large distance is provided between the protection plate and said fixation plate to avoid any shock or fixation of a rope 10 in the region of the rope loop.
    [0047] Figure 7 shows a rope pulley 14 which comprises a roller body 15 of the cylinder or plate type, which is swiveled in a manner known per se and which can be attached to the boom of a crane , for example. Said roll body 15 comprises, on its outer coating surface, a rope groove 5 which has an oval groove contour analogous to the rope grooves 5 of the lift cylinder 1. Reference can be made in this regard with respect to previous description. The rope contacting surface of the roller body 15 is advantageously polished, sharpened or carefully machined in another way, in particular, in the region of a rope groove 5, analogous to the lift cylinder 1 to obtain the reducing surface friction. Alternatively or additionally, said rope-contacting surface of a rope pulley 14 may be provided with a friction reducing or damper surface coating. Reference can also be made in this regard in relation to the preceding description.
    [0048] Just as the detailed partial view (b) of Figure 7 shows, the rope pulley 14 also advantageously has a rope groove 5 whose oval groove contour has a greater proportion of curvature R2 in the region of a base of the groove 7 than in the side flank sections adjacent to it where the proportion of curvature R1 or R3 becomes smaller, cf. Figure 7 (b).
    权利要求:
    Claims (14)
    [0001]
    1. Lifting cylinder for a lifting winch of a fiber rope controller that has a cylinder liner body (2) which is provided on the circumferential side of a groove (4) as well as having two protection plates (3 ) adjacent to the cylinder liner body (2) on the end sides, characterized by the fact that at least one rope groove (5) of a groove (4) has, when viewed in cross section, a groove outline (6 ) pressed and round which differs from the circular shape and which is adapted to the cross section of the rope under a tensile load and a transverse load on the lift cylinder and has a greater proportion of curvature at the base of the groove (7) than on the flanks adjacent slot grooves (8).
    [0002]
    Lifting cylinder according to claim 1, characterized by the fact that the groove contour (6) has an oval and / or elliptical shape.
    [0003]
    Lifting cylinder according to claim 1, characterized in that the groove contour (6) at the base of the groove (7) has a flattened portion and / or polygonal folds with surface areas inclined in relation to each other at a flat angle and, preferably, rounded transitions.
    [0004]
    Lifting cylinder according to any one of the preceding claims, characterized in that the ratio of groove width B to groove depth T is selected in the range from 3 - 7, preferably 4 - 6, in particular around 5.
    [0005]
    5. Lifting cylinder according to any one of the preceding claims, characterized by the fact that the spacing A of a groove (4) is around 104% to 111%, preferably around 106% to 110%, of the median rope diameter when this rope diameter is measured with a circular and non-deformed cross section of the rope.
    [0006]
    Lifting cylinder according to any one of the preceding claims, characterized in that the groove (4) and / or the parts of the lifting cylinder (1) contacted by the rope (10) have a carefully machined surface, preferably sharp or polished, which has an average roughness depth of <1 μm, preferably <0.25 μm.
    [0007]
    Lifting cylinder according to any one of the preceding claims, characterized in that the groove (4) and / or the parts of the lifting cylinder (1) contacted by the rope are provided with a friction-reducing surface coating. / or cushioning, preferably made of plastic.
    [0008]
    Lifting cylinder according to claim 7, characterized by the fact that the surface coating is configured in multiple layers, in which a higher layer of coating is friction reducing and a coating layer that rests directly or indirectly below it is cushioning.
    [0009]
    Lifting cylinder according to any one of the preceding claims, characterized in that the groove (4), viewed over the circumference of the cylinder liner body (2), comprises only a spacing region in which the grooves of rope (5) are deviated substantially by a diameter of the rope and comprises only a parallel region.
    [0010]
    10. Lifting cylinder according to any of the preceding claims, characterized by the fact that a rope diverter (9) is provided on at least one of the protection plates (3) and has at least one bypass section, viewed over the height of the protection plate, which has a cuff edge.
    [0011]
    11. Lifting cylinder according to claim 10, characterized by the fact that the rope diverter (9) has one more deviation section, which has a parallel flank and adjacent to said cuff flank, radially inward and / or radially out of said deflection section with the flank in gourd.
    [0012]
    Lifting cylinder according to any one of the preceding claims, characterized in that a means of securing the end of the rope (11) to secure the rope (10) to the lifting cylinder (1) comprises a rope fastening of the post type (12) in which a loop at the end of the rope preferably interlaced can be made.
    [0013]
    13. Rope pulley for a fiber rope controller that has a rotatingly supported roller body (15) whose casing surface has at least one rope groove (5), characterized by the fact that the rope groove ( 5), seen in cross section, has a pressed groove contour (6) that differs from the circular contour and which is adapted to the cross section of the rope under a tensile load and a transverse load on the lift cylinder and which has a greater proportion of curvature in the region of a groove base (7) than in the region of a groove flank (8).
    [0014]
    14. Rope controller, such as lifting gear or the like, characterized by the fact that it has a fiber rope as well as at least one lifting cylinder (1) as defined in any of claims 1 to 12 and / or that it has at least one rope pulley (14) as defined in claim 13.
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    同族专利:
    公开号 | 公开日
    WO2012100939A1|2012-08-02|
    CN103476700A|2013-12-25|
    ES2563324T3|2016-03-14|
    US20170327355A1|2017-11-16|
    EP2668129A1|2013-12-04|
    US20140027691A1|2014-01-30|
    RU2013139307A|2015-03-10|
    BR112013018722A2|2016-10-25|
    DE202011001845U1|2012-04-30|
    HUE026733T2|2016-07-28|
    JP5937620B2|2016-06-22|
    EP2668129B1|2015-11-25|
    US9758358B2|2017-09-12|
    US10301154B2|2019-05-28|
    PL2668129T3|2016-05-31|
    CN103476700B|2017-05-10|
    JP2014507353A|2014-03-27|
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-31| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-10-06| B09A| Decision: intention to grant|
    2020-12-15| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/01/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202011001845.8|2011-01-24|
    DE202011001845U|DE202011001845U1|2011-01-24|2011-01-24|Cable drum and pulley for fiber rope drives|
    PCT/EP2012/000312|WO2012100939A1|2011-01-24|2012-01-24|Rope drum and rope roller for fibre-rope drives|
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