CA2798576C - Rope guiding device for a rope winch - Google Patents
Rope guiding device for a rope winch Download PDFInfo
- Publication number
- CA2798576C CA2798576C CA2798576A CA2798576A CA2798576C CA 2798576 C CA2798576 C CA 2798576C CA 2798576 A CA2798576 A CA 2798576A CA 2798576 A CA2798576 A CA 2798576A CA 2798576 C CA2798576 C CA 2798576C
- Authority
- CA
- Canada
- Prior art keywords
- rope
- drum
- guide element
- roller
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
- B66D1/38—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of guides movable relative to drum or barrel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Cable-guiding device (11) for a cable winch having a cable drum (1), which can be rotated about an axis (9), for winding or unwinding a cable (4), wherein a guide element provided with a plurality of cable-guiding rollers (17a, b) can be moved parallel to the axis of the cable drum. This cable-guiding device is simple and robust in design, can be retrofitted to multi-layer cable winches, requires no adjustment work and nevertheless damps the vibrations in the cable. In the cable section situated in front of the cable drum, an additional mass is integrated in a play-free manner radially with respect to the cable in order to effectively suppress vibrations of the cable in the region of the natural frequency thereof. The integrated mass is formed by the mass of the floatingly guided guide element itself, with it being possible to change this mass, depending on the operating conditions, by means of additional weights which can be releaseably fastened to the guide element.
Description
Rope guiding device for a rope winch The invention relates to a rope guiding device for a rope winch with a rope drum that can be rotated about an axle for reeling-up or unreeling a rope, on which a guide element provided with several rope guiding rollers can be moved parallel to the axle of the rope drum.
Such rope guiding devices are particularly used in drum winders in the mining industry, where a rope is reeled-up on a rope drum in multiple rope layers or is unreeled from it. During the reeling-up or unreeling of the rope, oscillations occur in the section of the rope ahead of the rope drum, which make it more difficult to guide the rope and can affect operational safety. The oscillations are in particular triggered by a winding system with which the rope drums are equipped for taking up several layers of rope, so as to fill each rope layer with reciprocally flush rope windings and for transferring the rope tidily into the next rope layer. With known winding systems, the circumference of the rope drum is divided into two groove sections with parallel rope grooves, which are reciprocally offset by half a pitch. Between the two sections there are the so-called crossover areas, on which the rope is shifted to the next groove section by half a pitch in the axial direction of the rope drum.
The incoming or outgoing rope has a natural frequency, depending on its own weight, tensile load and length. The jerky shifting of the rope when the rope drum is turning in the crossover area, causes vibrational excitation of the rope. If the excitation frequency is close to the natural frequency of the rope, this can cause vigorous oscillations of the rope which will impair the safe operation of the drum winder. The rope can in particular come-off from the head sheave located on the headgear of the shaft or cause winding errors on the rope drum. If the oscillations are
Such rope guiding devices are particularly used in drum winders in the mining industry, where a rope is reeled-up on a rope drum in multiple rope layers or is unreeled from it. During the reeling-up or unreeling of the rope, oscillations occur in the section of the rope ahead of the rope drum, which make it more difficult to guide the rope and can affect operational safety. The oscillations are in particular triggered by a winding system with which the rope drums are equipped for taking up several layers of rope, so as to fill each rope layer with reciprocally flush rope windings and for transferring the rope tidily into the next rope layer. With known winding systems, the circumference of the rope drum is divided into two groove sections with parallel rope grooves, which are reciprocally offset by half a pitch. Between the two sections there are the so-called crossover areas, on which the rope is shifted to the next groove section by half a pitch in the axial direction of the rope drum.
The incoming or outgoing rope has a natural frequency, depending on its own weight, tensile load and length. The jerky shifting of the rope when the rope drum is turning in the crossover area, causes vibrational excitation of the rope. If the excitation frequency is close to the natural frequency of the rope, this can cause vigorous oscillations of the rope which will impair the safe operation of the drum winder. The rope can in particular come-off from the head sheave located on the headgear of the shaft or cause winding errors on the rope drum. If the oscillations are
2 exceptionally strong, any equipment of the drum winder close to the rope can be destroyed by the wobbling rope.
To avoid such oscillations of the rope, rope guiding devices for rope winches of drum winders have become known, in which a guide element is reciprocally shifted oscillating across the layer width of the rope synchronously to the rotational angle of the rope drum, to prevent oscillations in the rope section ahead of the rope drum.
Such rope guiding device for rope winches of conveying systems in the mining industry is known from DE 1 932 817.
In order to attenuate the oscillations in the incoming or outgoing rope, a guide element for the rope which is designed as a guide carriage is suspended pivoted on a steering screw, wherein the steering screw forms a part of a pivotable frame. The rope which runs with clearance between four horizontally arranged rollers and two vertical rollers is loaded by the weight of the guide carriage and the pivotable frame. This is to ensure a safe guidance of the rope and perfect reeling-up of same onto the rope drum, while at the same time any oscillations which interfere with the winding process of the rope in the rope section which is ahead of the rope drum, will be partially attenuated.
The known rope guiding devices are complicated and expensive. The synchronous drive of the guide carriage by means of a flexible driving link, such as a chain, with the shaft which also drives the rope drum, is expensive. A
readjustment of the synchronization between the guide carriage and the drive of the rope drum will be required, if after shortening the elongated rope the crossover of the rope from one into the other rope layer changes with reference to the rotational angle of the shaft and therefore the rope drum.
To avoid such oscillations of the rope, rope guiding devices for rope winches of drum winders have become known, in which a guide element is reciprocally shifted oscillating across the layer width of the rope synchronously to the rotational angle of the rope drum, to prevent oscillations in the rope section ahead of the rope drum.
Such rope guiding device for rope winches of conveying systems in the mining industry is known from DE 1 932 817.
In order to attenuate the oscillations in the incoming or outgoing rope, a guide element for the rope which is designed as a guide carriage is suspended pivoted on a steering screw, wherein the steering screw forms a part of a pivotable frame. The rope which runs with clearance between four horizontally arranged rollers and two vertical rollers is loaded by the weight of the guide carriage and the pivotable frame. This is to ensure a safe guidance of the rope and perfect reeling-up of same onto the rope drum, while at the same time any oscillations which interfere with the winding process of the rope in the rope section which is ahead of the rope drum, will be partially attenuated.
The known rope guiding devices are complicated and expensive. The synchronous drive of the guide carriage by means of a flexible driving link, such as a chain, with the shaft which also drives the rope drum, is expensive. A
readjustment of the synchronization between the guide carriage and the drive of the rope drum will be required, if after shortening the elongated rope the crossover of the rope from one into the other rope layer changes with reference to the rotational angle of the shaft and therefore the rope drum.
3 A further rope guiding device with a synchronous drive of the carriage is known from DE 38 27 078 Al. The rope guiding device comprises a carriage which has several rope guiding rollers, where said carriage can be moved parallel to the axle of the rope drum. The carriage is driven by means of a threaded spindle with an associated threaded bush and is supported by means of guide bars. The drive of the carriage is controlled by means of a control element according to a winding angle of the rope which adjusts itself in relation to the drum axle for tracking the carriage.
Finally, DE 20 54 357 A discloses a rope guiding device for a rope drive with a rope drum that can be rotated about an axle for reeling-up or unreeling of a rope, on which a carriage provided with several rope guiding rollers can be moved parallel to the axle of the rope drum. On the carriage, two limiting idlers are arranged one above the other which can be pivoted and which can be pressed-on by means of spring pressure against the rope that is reeled-up on the rope drum. The limiting idlers comprise a partial area of the rope sheathing. The rope windings which are formed by the rope that is reeled-up, determine the traversing motion of the carriage, because the limiting idlers which positively wrap around the rope shift the carriage in the direction of the drum axle; the helical rope winding is translated into a straight-line traversing motion of the carriage with the aid of the limiting idlers.
Based upon this prior art, the purpose of the invention is to propose a rope guiding device which has a simpler and sturdy design, which can be retrofitted in multilayer rope winches, requires no adjustment operation and at the same time effectively attenuates the oscillations in the rope.
The solution of this problem is based among other things on the idea to integrate an additional mass radially into the rope backlash-free into the rope section ahead of the rope
Finally, DE 20 54 357 A discloses a rope guiding device for a rope drive with a rope drum that can be rotated about an axle for reeling-up or unreeling of a rope, on which a carriage provided with several rope guiding rollers can be moved parallel to the axle of the rope drum. On the carriage, two limiting idlers are arranged one above the other which can be pivoted and which can be pressed-on by means of spring pressure against the rope that is reeled-up on the rope drum. The limiting idlers comprise a partial area of the rope sheathing. The rope windings which are formed by the rope that is reeled-up, determine the traversing motion of the carriage, because the limiting idlers which positively wrap around the rope shift the carriage in the direction of the drum axle; the helical rope winding is translated into a straight-line traversing motion of the carriage with the aid of the limiting idlers.
Based upon this prior art, the purpose of the invention is to propose a rope guiding device which has a simpler and sturdy design, which can be retrofitted in multilayer rope winches, requires no adjustment operation and at the same time effectively attenuates the oscillations in the rope.
The solution of this problem is based among other things on the idea to integrate an additional mass radially into the rope backlash-free into the rope section ahead of the rope
4 drum, in order to prevent oscillation of the rope effectively in the range of its natural frequency. With respect to the integrated mass, this involves in particular the mass of the floating guided guide element itself, which, depending on operating conditions, can be changed by additional weights which are to be detachably fitted to the guide element.
In one aspect, this problem is specifically solved with a rope guiding device of the type mentioned at the outset, in that a guide element provided with several rope guiding rollers each having a roller axle, the rope guiding rollers being arranged in the guide element such that the rope runs between the rope guiding rollers backlash-free at least in the direction of the axle of the rope drum, wherein the guide element is guided floatingly to be moveable along a rectilinear direction substantially parallel to the axle of the rope drum, so that the guide element is moved along the rectilinear direction exclusively by the forces which are transferred from the rope to the guiding rollers.
The backlash-free guidance of the rope between the rollers results in that the rope deflections act directly on the mass of the guide element. The additional mass of the guide element shifts the natural frequency of the rope such that resonance can no longer occur. As a result, the generation of oscillations in the rope are effectively suppressed, which are caused in particular by the jerky displacement of the rope in the direction of the axle of the rope drum through the crossover areas of the rope winding system.
The floating guide of the guide element parallel to the axle of the rope drum without utilizing a synchronized dryer with the rope drum for the guide element accomplishes that exclusively the forces transferred from the rope to the guide rollers cause a motion of the guide element parallel to the axle of the rope drum across its layer width. This observation is based upon the fact that the axle of the rope drum as well as the guide of the guide element are aligned horizontally during operation, and for this reason no sloping forces act upon the guide element.
In one aspect, this problem is specifically solved with a rope guiding device of the type mentioned at the outset, in that a guide element provided with several rope guiding rollers each having a roller axle, the rope guiding rollers being arranged in the guide element such that the rope runs between the rope guiding rollers backlash-free at least in the direction of the axle of the rope drum, wherein the guide element is guided floatingly to be moveable along a rectilinear direction substantially parallel to the axle of the rope drum, so that the guide element is moved along the rectilinear direction exclusively by the forces which are transferred from the rope to the guiding rollers.
The backlash-free guidance of the rope between the rollers results in that the rope deflections act directly on the mass of the guide element. The additional mass of the guide element shifts the natural frequency of the rope such that resonance can no longer occur. As a result, the generation of oscillations in the rope are effectively suppressed, which are caused in particular by the jerky displacement of the rope in the direction of the axle of the rope drum through the crossover areas of the rope winding system.
The floating guide of the guide element parallel to the axle of the rope drum without utilizing a synchronized dryer with the rope drum for the guide element accomplishes that exclusively the forces transferred from the rope to the guide rollers cause a motion of the guide element parallel to the axle of the rope drum across its layer width. This observation is based upon the fact that the axle of the rope drum as well as the guide of the guide element are aligned horizontally during operation, and for this reason no sloping forces act upon the guide element.
5 The floating guided guide element can be slightly shifted by the rope in the axial direction of the rope drum, so that a uniform reeling-up or unreeling of the rope is ensured.
The rope guiding rollers are supported in the correspondingly heavy guide element, which itself is shifted by the rope in the horizontal direction across the entire layer width of the rope drum. The synchronization of the rope guide element with the rotational angle of the driveshaft of the rope drum is dispensed with, since the guide element which attenuates the oscillations in the rope due to the backlash-free guidance between the rope guiding rollers is always in a location where the rope is reeled onto the drum or is unreeled from it.
A particularly effective backlash-free guidance of the rope between the rope guiding rollers in direction of the axle of the rope drum is accomplished in that the guide element has at least three rope guiding rollers with parallel roller axles, wherein a further rope guiding roller is arranged between two outer rope guiding rollers with offset roller axles in direction of the rope, which constrains the rope between the two outer rope guiding rollers. In this context, all roller axles run perpendicular to the axle of the rope drum, but skew to it.
Constraining the rope between the two outer rope guiding rollers and the further rope guiding roller can also be adapted to different operating conditions, in particular to different rope diameters, if the distance between the roller axles of at least one of the two outer rope guiding rollers and the roller axle of the further roller, can be adjusted. The further roller is preferably supported on an
The rope guiding rollers are supported in the correspondingly heavy guide element, which itself is shifted by the rope in the horizontal direction across the entire layer width of the rope drum. The synchronization of the rope guide element with the rotational angle of the driveshaft of the rope drum is dispensed with, since the guide element which attenuates the oscillations in the rope due to the backlash-free guidance between the rope guiding rollers is always in a location where the rope is reeled onto the drum or is unreeled from it.
A particularly effective backlash-free guidance of the rope between the rope guiding rollers in direction of the axle of the rope drum is accomplished in that the guide element has at least three rope guiding rollers with parallel roller axles, wherein a further rope guiding roller is arranged between two outer rope guiding rollers with offset roller axles in direction of the rope, which constrains the rope between the two outer rope guiding rollers. In this context, all roller axles run perpendicular to the axle of the rope drum, but skew to it.
Constraining the rope between the two outer rope guiding rollers and the further rope guiding roller can also be adapted to different operating conditions, in particular to different rope diameters, if the distance between the roller axles of at least one of the two outer rope guiding rollers and the roller axle of the further roller, can be adjusted. The further roller is preferably supported on an
6 articulated pivot arm and is therefore adjustable compared to the two firmly supported outer rollers.
The guide element comprising the guide rollers is in particular designed as a roller housing with two sides that are reciprocally arranged spaced apart, between which the roller axles of the rope guiding rollers extend. These sides at the same time serve as bearing housing. Using the thickness of the sides of the roller housing the mass can be determined into which the rope is to be integrated backlash-free.
The floating guide of the guide element parallel to the axle of the rope drum is done in particular by means of a linear guide, which enables the translation of the guide element parallel to the axle of the rope drum at least across its layer width.
A design of a linear guide that is particularly robust and durable for mining operations, is a rail guide for a guide carriage that is firmly connected with the guide element.
The rail guide guides the guide carriage, also called a transversing bogie, parallel to the axle of the rope drum at least across its layer width.
In order to integrate an adequate mass into the rope by means of the guide element under the given spatial conditions and also for reasons of stability, the guide element consists preferably of heavy metal, in particular of iron. The term "heavy metal" does not merely include various metals, but also their alloys with a density >5 g/cm3. But the guide element can obviously also consists of other materials having a high density of particularly >5 g/cm3. Using materials with a lower density, which is basically also possible, requires more installation space, which possibly may not be available, however.
The guide element comprising the guide rollers is in particular designed as a roller housing with two sides that are reciprocally arranged spaced apart, between which the roller axles of the rope guiding rollers extend. These sides at the same time serve as bearing housing. Using the thickness of the sides of the roller housing the mass can be determined into which the rope is to be integrated backlash-free.
The floating guide of the guide element parallel to the axle of the rope drum is done in particular by means of a linear guide, which enables the translation of the guide element parallel to the axle of the rope drum at least across its layer width.
A design of a linear guide that is particularly robust and durable for mining operations, is a rail guide for a guide carriage that is firmly connected with the guide element.
The rail guide guides the guide carriage, also called a transversing bogie, parallel to the axle of the rope drum at least across its layer width.
In order to integrate an adequate mass into the rope by means of the guide element under the given spatial conditions and also for reasons of stability, the guide element consists preferably of heavy metal, in particular of iron. The term "heavy metal" does not merely include various metals, but also their alloys with a density >5 g/cm3. But the guide element can obviously also consists of other materials having a high density of particularly >5 g/cm3. Using materials with a lower density, which is basically also possible, requires more installation space, which possibly may not be available, however.
7 If the theoretical calculations of the natural frequency of the rope of the rope winch differ from the natural frequency that occurs in practice, then the mass of the guide element acting as oscillation damper can be changed by at least one supplementary weight that can be detachably attached to the guide element. Such changes are also important in cases when the operating conditions of the rope winch change as a result of a higher hauling load on the rope or because of a heavier rope, for example.
In order to facilitate an always perpendicular run of the rope section ahead of the rope drum to the roller axles of the rope guiding rollers from a multilayer rope reel, the length of the rope guiding rollers is larger in the direction of the roller axles or equal to the difference of the radius of the rope coil with the rope that is reeled onto or unreeled from the rope drum. The orientation of the axles of the axial parallel configured rope guiding rollers is always perpendicular to the axle of the rope drum and the longitudinal axis of the rope unreeling from the drum.
In the following, the invention is explained in greater detail by means of Figures, as follows:
Figure la is a front elevation of a rope drum of a rope winch, Figure lb is a side elevation of rope guiding roller oriented to the rope drum Figure lc is a section along line X-X according to Figure la, Figure 2 is a section through a rope guiding device as taught by the invention, Figure 3 is a section along line X-X according to Figure 2 viewed in direction A,
In order to facilitate an always perpendicular run of the rope section ahead of the rope drum to the roller axles of the rope guiding rollers from a multilayer rope reel, the length of the rope guiding rollers is larger in the direction of the roller axles or equal to the difference of the radius of the rope coil with the rope that is reeled onto or unreeled from the rope drum. The orientation of the axles of the axial parallel configured rope guiding rollers is always perpendicular to the axle of the rope drum and the longitudinal axis of the rope unreeling from the drum.
In the following, the invention is explained in greater detail by means of Figures, as follows:
Figure la is a front elevation of a rope drum of a rope winch, Figure lb is a side elevation of rope guiding roller oriented to the rope drum Figure lc is a section along line X-X according to Figure la, Figure 2 is a section through a rope guiding device as taught by the invention, Figure 3 is a section along line X-X according to Figure 2 viewed in direction A,
8 Figure 4 is a lateral cross-sectional view of the rope guiding device according to Figure 2, Figure 5 is a view corresponding to Figure 3, but with an adjustable rope guiding roller.
Figure 1 a shows a rope drum (1) of a drum winder, which serves for driving the hoisting cages or hoisting buckets in the mining industry. The illustrated embodiment refers to a rope drum (1) with a cylindrical drum core (2), the lateral borders of which are flanges (3). A rope (4) connected with the hoisting cage and/or hoisting bucket is unreeled from the drum core (2) as the rope unwinds and is reeled-up in multiple rope layers as the rope is wound up.
The drum core (2) is equipped with a winding system in order to reel-up the rope (4) in multiple rope layers with rope windings that are reciprocally flush across the entire layer width (6) and to transfer it tidily into the next layer (Sa - 5d)). The winding system divides the circumference of the drum core (2) into two sections (7a, 7b) with parallel grooves which are reciprocally offset by half a pitch. Between the areas (7a, 7b) with parallel grooves, the so-called crossover areas (8a, 8b) are located, on which the rope (4) is shifted by half a pitch in the direction of the axle (9) of the rope drum (1) to the next grooved area (7a and/or 7b), while the rope drum (1) is rotating. The jerky shifting of the rope (4) from one grooved area (7a and/or 7b) into the next while the rope drum (1) is rotating, excites oscillations in the rope section of the rope that is ahead of the rope drum (1). If the excitation frequency is within the range of the natural frequency of the rope (4), violent deflections of the rope (4) can occur which can significantly impair the operational safety of the drum winder.
Figure 1 a shows a rope drum (1) of a drum winder, which serves for driving the hoisting cages or hoisting buckets in the mining industry. The illustrated embodiment refers to a rope drum (1) with a cylindrical drum core (2), the lateral borders of which are flanges (3). A rope (4) connected with the hoisting cage and/or hoisting bucket is unreeled from the drum core (2) as the rope unwinds and is reeled-up in multiple rope layers as the rope is wound up.
The drum core (2) is equipped with a winding system in order to reel-up the rope (4) in multiple rope layers with rope windings that are reciprocally flush across the entire layer width (6) and to transfer it tidily into the next layer (Sa - 5d)). The winding system divides the circumference of the drum core (2) into two sections (7a, 7b) with parallel grooves which are reciprocally offset by half a pitch. Between the areas (7a, 7b) with parallel grooves, the so-called crossover areas (8a, 8b) are located, on which the rope (4) is shifted by half a pitch in the direction of the axle (9) of the rope drum (1) to the next grooved area (7a and/or 7b), while the rope drum (1) is rotating. The jerky shifting of the rope (4) from one grooved area (7a and/or 7b) into the next while the rope drum (1) is rotating, excites oscillations in the rope section of the rope that is ahead of the rope drum (1). If the excitation frequency is within the range of the natural frequency of the rope (4), violent deflections of the rope (4) can occur which can significantly impair the operational safety of the drum winder.
9 The rope guiding device (11) as taught by the invention is used for the purpose of preventing rope deflections as a result of vibration excitations. The rope guiding device (11), illustrated schematically in Figure 2, shows the rope (4) exiting from the rope drum (1) according to Figure 1 at an angle of lapping a of approximately 45 to a horizontal head sheave (not shown). The rope angle of lapping a to the horizontal can however also comprise other angles between -90 to + 90 degrees.
The rope guiding device (11) comprises a guide element that is formed by a roller housing (12) and a guide carriage (13), also termed a traversing bogie, located below the roller housing (12). The roller housing (12) is mounted on the guide carriage (13) top surface (14) which is tilted corresponding to the rope angle of lapping a of approximately 45 , in particular by welding or by the use of bolts and screws. The roller housing (12) comprises two parallel sides (15a, 15b) which are arranged spaced apart, between which the three roller axles (16 a-c) for accommodating two outer rope guiding rollers (17 a, b) as well as a center rope guiding roller (17 c) arranged between the two outer rope guiding rollers, extend.
From Figure 3 it can be recognized that all roller axles (16 a-c) run reciprocally parallel. The roller axles (16a, b) of the two outer rope guiding rollers (17a, 17b) are arranged reciprocally offset in the rope direction (18) of the rope (4). On the opposite side of the rope (4), axially parallel to the roller axles (16a, 16b) of the outer rope guiding rollers (17a, 17b), the roller axle (16c) of the center rope guiding roller (17 c) is located, which slightly clamps and therefore constrains the rope between the two outer rope guiding rollers (17a, 17b). In the clamping area, the rope (4) is a little deflected by the center rope guiding roller (17 c) from the rope direction (18) in the direction of the two outer rope guiding rollers (17a, b). As a result, the rope (4) is guided backlash-free between the rope guiding rollers (17 a-c). The backlash-free rope guiding effectively prevents deflections of the rope (4) in direction of the axle (9) of the rope drum (1).
In the direction of the roller axles (16 a-c), the movement 5 of rope (4) between the rope guiding rollers is inhibited because it is wedged, so that any potential deflections of the rope which could occur in this direction are attenuated effectively by the guide element from the roller housing (12) and guide carriage (13). Potential rope deflections
The rope guiding device (11) comprises a guide element that is formed by a roller housing (12) and a guide carriage (13), also termed a traversing bogie, located below the roller housing (12). The roller housing (12) is mounted on the guide carriage (13) top surface (14) which is tilted corresponding to the rope angle of lapping a of approximately 45 , in particular by welding or by the use of bolts and screws. The roller housing (12) comprises two parallel sides (15a, 15b) which are arranged spaced apart, between which the three roller axles (16 a-c) for accommodating two outer rope guiding rollers (17 a, b) as well as a center rope guiding roller (17 c) arranged between the two outer rope guiding rollers, extend.
From Figure 3 it can be recognized that all roller axles (16 a-c) run reciprocally parallel. The roller axles (16a, b) of the two outer rope guiding rollers (17a, 17b) are arranged reciprocally offset in the rope direction (18) of the rope (4). On the opposite side of the rope (4), axially parallel to the roller axles (16a, 16b) of the outer rope guiding rollers (17a, 17b), the roller axle (16c) of the center rope guiding roller (17 c) is located, which slightly clamps and therefore constrains the rope between the two outer rope guiding rollers (17a, 17b). In the clamping area, the rope (4) is a little deflected by the center rope guiding roller (17 c) from the rope direction (18) in the direction of the two outer rope guiding rollers (17a, b). As a result, the rope (4) is guided backlash-free between the rope guiding rollers (17 a-c). The backlash-free rope guiding effectively prevents deflections of the rope (4) in direction of the axle (9) of the rope drum (1).
In the direction of the roller axles (16 a-c), the movement 5 of rope (4) between the rope guiding rollers is inhibited because it is wedged, so that any potential deflections of the rope which could occur in this direction are attenuated effectively by the guide element from the roller housing (12) and guide carriage (13). Potential rope deflections
10 directly affect the total mass of roller housing (12) and guide carriage (13), which in particular consist of iron or iron alloys.
The guide carriage (13) carrying the roller housing (12) is guided floating by a rail guide (19) parallel to the axle (9) of the rope drum (1). In order to reduce the friction, the guide carriage (13) is supported in the rail guide (19) on four rollers (21). The rail guide (19) is fixed so that it cannot be shifted. Floating guidance means that the guide element comprising the guide carriage (13) and the roller housing (12) without using its own drive is exclusively moved by the rope (4) which runs backlash-free between the rope guiding rollers (17 a-c) along the rail guide across the layer width (6).
Any potential rope deflections of the rope (4) therefore act directly on the total mass of the guide element, wherein the additional mass of the guide element shifts the natural frequency of the rope to such an extent that resonance can no longer occur. Due to the missing synchronization with the rotational angle of the rope drum (1), the guide element of the rope guiding device will always be in a position where the rope just reels-up onto the rope drum and/or unreels from it.
Figure 5 shows an embodiment of the guide element, in which the center rope guiding roller (17c) in the roller housing (12) is adjustable, in order to be able to adapt the rope
The guide carriage (13) carrying the roller housing (12) is guided floating by a rail guide (19) parallel to the axle (9) of the rope drum (1). In order to reduce the friction, the guide carriage (13) is supported in the rail guide (19) on four rollers (21). The rail guide (19) is fixed so that it cannot be shifted. Floating guidance means that the guide element comprising the guide carriage (13) and the roller housing (12) without using its own drive is exclusively moved by the rope (4) which runs backlash-free between the rope guiding rollers (17 a-c) along the rail guide across the layer width (6).
Any potential rope deflections of the rope (4) therefore act directly on the total mass of the guide element, wherein the additional mass of the guide element shifts the natural frequency of the rope to such an extent that resonance can no longer occur. Due to the missing synchronization with the rotational angle of the rope drum (1), the guide element of the rope guiding device will always be in a position where the rope just reels-up onto the rope drum and/or unreels from it.
Figure 5 shows an embodiment of the guide element, in which the center rope guiding roller (17c) in the roller housing (12) is adjustable, in order to be able to adapt the rope
11 guiding device to different operating conditions, in particular to rope diameters. For this purpose, the center rope guiding roller (17 c) is not directly supported in the two opposite sides (15a, 15b), but in one support frame (23) which can be pivoted around an axle (22). The adjustment is done by means of an adjusting screw (24), which displaces the support frame (23) in direction of the rope (4) and thus the center rope guiding roller (17 c) in direction of the two outer rope guiding rollers (17a, 17b), and therefore constrains the rope. An internal thread in a link (26), which extends between the sides (15a, 15b) of the roller housing (12) serves as an abutment for the adjusting screw (24).
The length (25) of the rope guiding rollers (17 a-c) in direction of the roller axles (16 a-c) is preferably the same as the difference of the radius of the rope coil of the rope (4), if it is completely reeled-up and completely unreeled from the rope drum (1), as can be seen from Figures lb and lc in particular.
An essential advantage of the rope guiding device (11) as taught by the invention consists in that a complex synchronous coupling of the guide element to the driveshaft of the rope drum (1), can be dispensed with. For this reason, it is possible that the rope guiding device (11) can be retrofitted on any drum winder.
The floating support of the guide element prevents winding errors, even following any potential shortening of the rope, since the guide carriage with the rope guiding housing automatically follows the movement of the unreeling rope in the direction of the axle of the drum across the layer width (9).
The design of the rope guiding device is simple, sturdy, and therefore durable. The technology of the rope guiding device is also easily comprehensible for drum winder operators. By appropriate adaptation of the guide carriage,
The length (25) of the rope guiding rollers (17 a-c) in direction of the roller axles (16 a-c) is preferably the same as the difference of the radius of the rope coil of the rope (4), if it is completely reeled-up and completely unreeled from the rope drum (1), as can be seen from Figures lb and lc in particular.
An essential advantage of the rope guiding device (11) as taught by the invention consists in that a complex synchronous coupling of the guide element to the driveshaft of the rope drum (1), can be dispensed with. For this reason, it is possible that the rope guiding device (11) can be retrofitted on any drum winder.
The floating support of the guide element prevents winding errors, even following any potential shortening of the rope, since the guide carriage with the rope guiding housing automatically follows the movement of the unreeling rope in the direction of the axle of the drum across the layer width (9).
The design of the rope guiding device is simple, sturdy, and therefore durable. The technology of the rope guiding device is also easily comprehensible for drum winder operators. By appropriate adaptation of the guide carriage,
12 in particular of the angle of inclination of its top surface (14), the guide element can be easily adapted to various rope angles of lapping.
13 List of reference symbols No. Description 1 Rope drum 2 Drum core 3 Flanges 4 Rope 5a-d Layers 6 Layer width 7a-b Section with parallel grooves 8a-b Cross-over area 9 Rope drum axle 11 Rope guiding device 12 Roller housing 13 Guide carriage
14 Guide carriage top surface 15a-b Sides 16a-c Roller axles 17a-b Outer rope guiding rollers 17c Center rope guiding roller 18 Rope direction 19 Rail guide 21 Rollers 22 Pivot axle 23 Support frame 24 Adjusting screw Length 26 Link
Claims (10)
1. A rope guiding device for a rope winch with a rope drum that can be rotated about an axle for reeling-up or unreeling a rope, the rope guiding device comprising:
- a guide element provided with several rope guiding rollers each having a roller axle, the rope guiding rollers being arranged in the guide element such that the rope runs between the rope guiding rollers backlash-free at least in the direction of the axle of the rope drum;
- wherein the guide element is guided floatingly to be moveable along a rectilinear direction substantially parallel to the axle of the rope drum, so that the guide element is moved along the rectilinear direction exclusively by the forces which are transferred from the rope to the guiding rollers.
- a guide element provided with several rope guiding rollers each having a roller axle, the rope guiding rollers being arranged in the guide element such that the rope runs between the rope guiding rollers backlash-free at least in the direction of the axle of the rope drum;
- wherein the guide element is guided floatingly to be moveable along a rectilinear direction substantially parallel to the axle of the rope drum, so that the guide element is moved along the rectilinear direction exclusively by the forces which are transferred from the rope to the guiding rollers.
2. The rope guiding device according to Claim 1, wherein the rope guiding rollers of the guide element comprises at least three rope guiding rollers having parallel roller axles, including two outer rope guiding rollers with the roller axles thereof offset in a rope direction and a further rope guiding roller arranged between the two outer rope guiding rollers, the further rope guiding roller constraining the rope between the two outer rope guiding rollers.
3. The rope guiding device according to Claim 2, wherein the space between the roller axle of at least one of the two outer rope guiding rollers and of the roller axle of the further guiding roller is adjustable.
4. The rope guiding device according to any one of claims 1 to 3, wherein the guide element comprises a roller housing with two sides that are reciprocally spaced apart, between which the roller axles of the rope guiding rollers extend.
5. The rope guiding device according to any one of claims 1 to 4, wherein the guide element is guided floatingly by means of a linear guide parallel to the axle of the rope drum.
6. The rope guiding device according to any one of claims 1 to 4, wherein the guide element comprises a guide carriage, which is guided floatingly by means of a rail guide parallel to the axle of the rope drum.
7. The rope guiding device according to any one of claims 1 to 6, wherein the guide element is made of heavy metal.
8. The rope guiding device according to any one of claims 1 to 7, wherein at least one supplementary weight is detachably attached to the guide element.
9. The rope guiding device according to any one of claims 1 to 8, wherein a length of the rope guiding rollers in direction of the roller axles is larger than or equal to the difference of the radius of a rope coil of the rope which is reeled-up and unreeled from the rope drum.
10. A rope winch with a rope drum that can be rotated about an axle for reeling-up or unreeling a rope, wherein the rope winch comprises a rope guiding device according to any one of claims 1 to 9.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010023400.1 | 2010-06-11 | ||
| DE201010023400 DE102010023400A1 (en) | 2010-06-11 | 2010-06-11 | Rope guiding device for a winch |
| PCT/EP2011/058230 WO2011154236A1 (en) | 2010-06-11 | 2011-05-20 | Cable-guiding device for a cable winch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2798576A1 CA2798576A1 (en) | 2011-12-15 |
| CA2798576C true CA2798576C (en) | 2016-02-09 |
Family
ID=44454732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2798576A Expired - Fee Related CA2798576C (en) | 2010-06-11 | 2011-05-20 | Rope guiding device for a rope winch |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2539271B1 (en) |
| CA (1) | CA2798576C (en) |
| DE (1) | DE102010023400A1 (en) |
| RU (1) | RU2529583C2 (en) |
| WO (1) | WO2011154236A1 (en) |
| ZA (1) | ZA201207008B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201205986D0 (en) * | 2012-04-03 | 2012-05-16 | Deep Tek Ip Ltd | Apparatus and method |
| RU2668101C1 (en) * | 2017-08-10 | 2018-09-26 | Государственное бюджетное образовательное учреждение высшего образования "Альметьевский государственный нефтяной институт" | Lifting system of drilling installation |
| CN110872068A (en) * | 2019-11-16 | 2020-03-10 | 中国海洋大学 | Steel cable buffering device of marine winch |
| CN116020890B (en) * | 2023-03-30 | 2023-07-18 | 上海电气集团腾恩驰科技(苏州)有限公司 | Wire drawing guider for cable production, wire drawing method and wire drawing production line |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU57634A1 (en) * | 1939-01-15 | 1939-11-30 | С.И. Бойченко | Rope guide in the cargo winch drum |
| US2453184A (en) * | 1947-12-29 | 1948-11-09 | Green & Berry Inc | Cable spooling device for well drilling rigs |
| GB1268484A (en) | 1968-06-28 | 1972-03-29 | Brian John Bellhouse | Improvements relating to non-return valves particularly as prosthetics |
| AT297989B (en) * | 1969-11-06 | 1972-04-25 | Dickertmann Hebezeugfabrik A G | Cable guide device for cable hoists, cable drives or the like. |
| SE403276B (en) * | 1976-02-19 | 1978-08-07 | Hegglund & Soner Ab | WINDING LEAD DEVICE FOR WINDING A FLEXIBLE ELEMENT ON A WINDING DEVICE EXV A WINCH |
| DE3467559D1 (en) * | 1983-01-05 | 1987-12-23 | Andre Brusselle | Device for detecting the tension or force exerted on a cable or the like on which is fixed for example a fishing net |
| NO153255C (en) * | 1983-09-26 | 1986-02-12 | Elkem As | DEVICE FOR CONTROL POOLING BY STAALTAU E.L. ON A ROTABLE DRUM. |
| DE3827078A1 (en) * | 1988-08-10 | 1990-02-15 | Hatlapa Uetersener Maschf | WINDING DEVICE FOR WINCHES |
| SU1654210A1 (en) * | 1989-06-16 | 1991-06-07 | Государственный Институт По Проектированию Предприятий Железорудной Промышленности "Кривбасспроект" | Guide arrangement for elevating vessels |
| RU2196724C2 (en) * | 2001-04-10 | 2003-01-20 | Буданов Станислав Васильевич | Wire rope guide |
| CN101549839B (en) * | 2009-05-18 | 2011-04-13 | 杭州天铭机电工具有限公司 | Rope guider |
-
2010
- 2010-06-11 DE DE201010023400 patent/DE102010023400A1/en not_active Withdrawn
-
2011
- 2011-05-20 RU RU2012147917/11A patent/RU2529583C2/en not_active IP Right Cessation
- 2011-05-20 EP EP11724146.3A patent/EP2539271B1/en active Active
- 2011-05-20 CA CA2798576A patent/CA2798576C/en not_active Expired - Fee Related
- 2011-05-20 WO PCT/EP2011/058230 patent/WO2011154236A1/en active Application Filing
-
2012
- 2012-09-18 ZA ZA2012/07008A patent/ZA201207008B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP2539271B1 (en) | 2014-04-23 |
| DE102010023400A1 (en) | 2011-12-15 |
| ZA201207008B (en) | 2013-05-29 |
| CA2798576A1 (en) | 2011-12-15 |
| RU2012147917A (en) | 2014-07-20 |
| RU2529583C2 (en) | 2014-09-27 |
| EP2539271A1 (en) | 2013-01-02 |
| WO2011154236A1 (en) | 2011-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2794459B1 (en) | Drum unit for a well intervention string | |
| EP2054335B1 (en) | Direct acting single sheave active/passiv heave compensator | |
| CA2798576C (en) | Rope guiding device for a rope winch | |
| JP7362739B2 (en) | Rope guide device, electric hoist and crane system | |
| EP3183201B1 (en) | Winch assembly and method of use | |
| CN108463421B (en) | System for winding a rope on a winch drum and winding device | |
| US9482064B2 (en) | Drum unit with an arch compensator for a well intervention string | |
| US3182961A (en) | Combined fleet angle compensator and braking apparatus | |
| US20230079781A1 (en) | Cable winch, method for winding a cable winch of this type, and crane having a cable winch | |
| CN113614019B (en) | Rope guide for a winch | |
| EP3478564A1 (en) | Vessel anchor assembly | |
| EP2872439B1 (en) | Marine winch assembly | |
| CN106744435A (en) | A kind of friction winch | |
| FI12033U1 (en) | Fiber web winder | |
| US10822213B2 (en) | In-line spooling device for compensating fleet angle | |
| CA2873372C (en) | Drum unit with an arch compensator for a well intervention string | |
| JP2003155193A (en) | Cable crane | |
| JPH10218573A (en) | Main hoist winding machine for fuel dealing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20130409 |
|
| MKLA | Lapsed |
Effective date: 20200831 |