Garland roll and overhead line support system for use in overhead line construction

Description

TECHNICAL FIELD

[0001] The invention relates to systems and devices for use in overhead line construction. In particular, the invention relates to a novel pulley block (hereinafter referred to as a festoon pulley) for providing an overhead line auxiliary support system for the safe replacement of a conductor. A conductor can also be referred to as a line or overhead line, for example, as a high-voltage overhead line. TECHNOLOGICAL BACKGROUND

[0002] The replacement of overhead lines is a significant undertaking in several respects, but particularly in the case of high-voltage overhead lines, as the infrastructure lying beneath or crossing these lines could be damaged by unauthorised approach or accidents (breakage of the conductor cable), and there are associated health and safety risks.

[0003] For this purpose, cable pulley systems are known. These systems consist of a series of festoon rolls suspended from the existing conductor between two masts and extended along the conductor by a robot (hereinafter referred to as a cable trolley), which pulls an auxiliary or support rope to which the festoon rolls are attached. The support rope is then tensioned so that the festoon rolls tip over and take the load of the existing conductor. The existing conductor is then pulled through the festoon rolls, with another conductor rope, which is intended to replace the existing conductor rope, being pulled through afterward, connected to suitable equipment (e.g., pulling grips and swivel connectors).

[0004] Existing festoon pulleys intended for this purpose require the handling of fasteners such as nuts to perform various operations to (a) attach the block to the catenary and (b) securely guide the existing conductor within the block. Relevant prior art is disclosed in the following documents: AU 2016 101 554 A4, US 6 540 207 B1, EP 3 599 685 A2. Overhead line workers must typically work from suspended ladders suspended from the mast itself or similarly constrained positions. Combined with the relatively bulky safety clothing and harnesses required in such working positions, the worker's mobility, reach, and dexterity are restricted. The design of existing festoon pulleys does not take these working conditions into account – both in terms of user-friendliness (and thus efficiency) and risk management.

[0005] While safety protocols are typically implemented to restrict access to a hazardous area below the work position, there is still a risk of injury to personnel if the garland roll (or parts of it) falls—as well as the possibility of damage to the garland roll or other equipment if it falls from a height. Furthermore, the time lost in retrieving fallen equipment is detrimental to efficiency.

[0006] In addition, the existing design of the garland rolls is such that during installation there are cases where a garland roll is held only by the worker's grip - which in turn leads to the blocks falling from a height.

[0007] Even if no errors are made, improving usability in such hazardous work environments can help reduce worker stress and fatigue - which in turn improves worker well-being and increases the likelihood of better decision-making or more efficient worker deployment.

[0008] Furthermore, a significantly lower weight compared to garland rolls currently available on the market ensures a reduced load on the existing ladder cables that are often already weakened due to age and that need to be replaced, which further increases the safety of the work. PRESENTATION OF THE INVENTION

[0009] It is an object of the present invention to solve the above-mentioned problems or at least to provide the public with a useful choice.

[0010] This task is solved by a garland roll, which has: a body having an interior and an exterior, and having an opening between the interior and the exterior; a main barrier movable between a closed position blocking the opening and an open position allowing passage from the exterior to the interior through the opening; and a cable pulley positioned inside the body, the festoon pulley having a first partial cable pulley extending from the body into the interior, the first partial cable pulley being disposed between the cable pulley and an end of the body spaced from the cable pulley, and the festoon pulley having a second partial cable pulley extending toward the first partial cable pulley in the closed position of the main barrier.

[0011] The rope pulley can also be called a rope pulley.

[0012] In addition, the task is solved by an overhead line auxiliary support system that has: a plurality of garland rolls according to the invention; and a suspension cable for suspension between two supporting structures (for example, overhead line masts defining the work area) to which the garland rolls are attached.

[0013] Furthermore, the object is achieved by a method for the use of an overhead line auxiliary support system, wherein in the method a plurality of garland rolls according to the invention are or are fastened to a support cable.

[0014] Because the main lock blocks the opening in its closed position, preferably with a spring-loaded mechanism, a rope, such as the conductor rope and / or the support rope, whose end is inaccessible to a garland roll installer, can be easily inserted into the garland roll. The garland roll is secured against accidental release from the rope by the main lock, and the rope pulley allows for easy movement relative to the rope. The garland roll can therefore be attached particularly easily and securely to a rope spanning a gap (also called a span) between two supporting structures.

[0015] The solution can be further improved by various embodiments, each of which is advantageous in its own right and, unless otherwise stated, can be combined with one another in any desired way. These embodiments and their associated advantages are discussed below.

[0016] According to one embodiment of the garland roll, the body has a back side with a first end and a second end, a first lateral arm extending from the first end of the back side, and a second lateral arm extending from the second end of the back side, wherein the opening is arranged between free ends of the first and second lateral arms.

[0017] According to one embodiment of the garland roll, the body is made of an electrically non-conductive, i.e. insulating, material.

[0018] According to one embodiment of the garland roll, the body is made of a plastic material, a metal or a die-cast material.

[0019] According to one embodiment of the garland roll, the garland roll has at least one rope guard between the body and a longitudinal end of the rope roll.

[0020] According to one design of the garland roll, the rope protection extends over part of the rope roll.

[0021] According to one embodiment of the garland roll, the rope protection has a surface which forms a substantially continuous profile with the rope roll in at least one direction.

[0022] According to one embodiment of the garland roll, the rope protection is located on a surface of the body which is facing away from a direction from which an existing rope is pulled through the garland roll.

[0023] According to one embodiment of the garland pulley, the opening and the main barrier are arranged on one side of the body between the position of the pulley and an end of the body spaced from the pulley.

[0024] According to one embodiment of the garland pulley, the main lock has a pivot arm that can pivot about a rotation axis arranged on one side of the opening. The rotation axis can be aligned substantially parallel or obliquely, for example, perpendicular to the rotation axis of the cable pulley. The pivot angle through which the pivot arm can pivot about the rotation axis can be up to 45°, 60°, 75°, or 90°, or more than 90° and 105°, 120°, or 135°. A deflection projection, not part of the invention and located opposite the main lock, can provide a stop for the pivot lever and specify the pivot angle.

[0025] According to one embodiment of the garland roll, the main lock is configured to open into the interior of the body.

[0026] According to one embodiment of the garland roll, the main lock is configured such that it rests against the body in the closed position to prevent it from opening outwards. According to one embodiment, the garland roll has a load transfer device with which a mechanical load can be transferred across the opening when the main lock blocks the opening. For example, the load transfer device has a holding element and a counter-holding element, wherein the holding element and the counter-holding element interact with each other and transfer the load to each other when the main lock blocks the opening. For example, the holding element and the counter-holding element can be designed to be complementary to each other at least in sections and engage with each other when the main lock is in the closed state and thus transfer mechanical loads across the opening when the main lock is in the closed state.For example, the retaining element and / or the counter-retaining element can be designed as a retaining projection. The retaining element or the counter-retaining element can be designed as a retaining receptacle for the retaining projection, which at least partially accommodates the retaining projection in the closed position of the main lock. If the retaining element and the counter-retaining element are designed as a retaining projection, they can at least partially overlap in the closed position of the main lock, i.e., be arranged one behind the other along the clear width of the opening and abut one another.

[0027] According to one embodiment of the garland roller, the main lock is pre-tensioned towards the closed position.

[0028] According to one embodiment of the garland roll, the garland roll has means for positioning a support rope with respect to the body.

[0029] According to one embodiment of the garland roll, the device for positioning the supporting rope is located inside the body.

[0030] According to one embodiment of the garland roller, the means for positioning the support cable has a recess which opens towards the interior of the body and which is arranged at an end of the body which is furthest from the roller.

[0031] According to one embodiment of the garland roll, the means for locating the support cable comprises a second lock which is movable between a position in which it blocks the recess from the interior and a position in which it releases the recess to the interior.

[0032] According to one embodiment of the garland roll, the recess has a hollow space on one side for accommodating the second lock when the second lock is arranged in the open position. The hollow space can also be referred to as an indentation.

[0033] According to one embodiment of the garland roller, the second lock is pretensioned towards the position in which it blocks the recess.

[0034] According to one embodiment of the garland roll, the means for positioning the support rope is located at a vertex of the interior of the body.

[0035] According to a design of the garland roller not belonging to the invention, the garland roller has a deflection projection extending from the body into the interior. According to a design of the garland roller not belonging to the invention, the deflection projection is arranged between the rope roller and a spaced-apart from the rope roller.

[0036] end of the body.

[0037] According to an embodiment of the garland pulley not belonging to the invention, a surface of the deflection projection facing the pulley is arranged to extend obliquely from the pulley to the spaced end of the body.

[0038] According to an embodiment of the garland pulley not belonging to the invention, a surface of the deflection projection facing the rope pulley is concavely curved.

[0039] According to an embodiment of the garland roll not belonging to the invention, the concavely curved surface of the deflection projection is shaped such that its apex is arranged offset away from the main barrier laterally from the center of mass of the garland roll.

[0040] According to an embodiment of the garland roller not belonging to the invention, the garland roller has a second deflection projection which, in the closed position of the main barrier, extends in the direction of the other of the deflection projections.

[0041] According to an embodiment of the garland roller or the overhead line auxiliary support system not belonging to the invention, the garland roller has a gap between the deflection projections that, when the main barrier is closed, is sufficient to move a support cable through the gap. For example, the length of the gap is less than 25 mm, less than 20 mm, or less than 16 mm. For example, the length of the gap is more than 10 mm, more than 16 mm, more than 20 mm, and, for example, between 10 mm and 25 mm, and in particular 20 mm.

[0042] According to one embodiment of the garland roll, the garland roll has an auxiliary weight. According to one embodiment of the garland roll, the auxiliary weight is arranged on the side of the body provided with the opening.

[0043] According to one embodiment of the garland roller, the auxiliary weight is located near the end of the body where the means for positioning the supporting cable is located.

[0044] According to one embodiment of the garland roll, the garland roll has a casing for the auxiliary weight, which is arranged on the outside of the body.

[0045] According to one embodiment of the garland roll, the auxiliary weight is arranged and dimensioned in such a way that it ensures a defined asymmetrical center of gravity in order to force the tilting of the garland roll in a desired direction as described below.

[0046] According to one embodiment of the garland roll, the garland roll has an eyelet on the outside of the body, wherein the eyelet is arranged at an end of the body which is closer to the rope pulley than an opposite end of the body.

[0047] According to one embodiment of the overhead line auxiliary support system, the overhead line auxiliary support system comprises at least one fixing device and, for example, a plurality of fixing devices for the support cable, which are configured to prevent the relative movement of the garland rollers along the support cable.

[0048] According to one embodiment of the overhead line auxiliary support system, the overhead line auxiliary support system has a hoist cable which is designed to hold or lift the garland rolls in a working position in which they can be fastened to the support cable.

[0049] According to one embodiment of the overhead line auxiliary support system, the hoist rope comprises a main rope and a plurality of secondary ropes, each secondary rope being attached to the main rope at one end and being spaced from the other secondary ropes.

[0050] According to one embodiment of the method, the garland rolls are positioned on an existing and possibly replaceable conductor cable, wherein the existing conductor cable is suspended between two supporting structures; and the supporting cable is pulled along the existing conductor cable from one of the supporting structures to the other; and the supporting cable is tensioned such that the existing conductor cable rests against the garland rolls and, in the further course, the garland rolls tilt so that the supporting cable assumes a load-bearing function.

[0051] To attach the garland roll to a conductor that spans a clear width between two supporting structures, the garland roll can be hung from the conductor by guiding the conductor through the opening and then hanging the garland roll on the conductor extending through the interior. If the garland roll is hanging from the conductor, the conductor can rest against the pulley. Before or after the garland roll is hung from the conductor, the support cable can optionally be guided through the opening. To attach the garland roll, the support cable can be brought into contact with the means for positioning the support cable. To do this, the support cable can be inserted past the second lock into the recess. In the closed position, the second lock can prevent the support cable from unintentionally leaving the recess towards the interior.The fixing device can be attached to the support cable before, after, or during the installation of the garland roll. Multiple garland rolls can be attached to the support cable in this way.

[0052] With the garland rollers and optionally a movement device that moves at least one of the garland rollers along the conductor cable, for example a robot such as the cable trolley, the support cable can be moved from one of the support structures to the other of the support structures.

[0053] If the support cable spans the gap between the supporting structures, the support cable can be attached to them and tensioned between them, for example. The conductor cable is then slightly slackened, and the support cable is further tensioned in a controlled manner to a specified tensile force, so that the festoon pulleys tip over and the pulley is no longer positioned above, but below, the conductor cable, supporting it. The conductor cable then contacts the pulley and can be easily moved over it and, for example, pulled from one supporting structure to the other to remove it.

[0054] If a different conductor is to be stretched between the supporting structures, a leader cable can be attached to the removed conductor cable. This leader cable is moved from one supporting structure to the other when the previous conductor cable is removed. The other conductor cable can be attached to the leader cable and moved from one supporting structure to the other via the pulleys, for example, and pulled. Typically, the other conductor cable is attached to the existing conductor cable, so that moving the existing conductor cable also moves the other conductor cable.

[0055] To remove the at least one garland roll, it can be moved from one of the supporting structures to the other using the support cable, for example, by pulling. To do this, the support cable is first slackened, allowing the at least one garland roll to tip over so that the cable roll is no longer positioned below, but above, the conductor cable. This allows the garland roll to hang from the conductor cable, and the cable roll to roll over the conductor cable.

[0056] In other words, the invention can be further improved with the following embodiments.

[0057] A festoon reel is a device that can be suspended from a support cable suspended between two supporting structures and serves to support a conductor cable, for example, when the conductor cable is to be removed or replaced. It is envisaged that exemplary embodiments of the festoon reel described herein may find particular application for replacing conductor cables, for example, high-voltage power transmission conductors, suspended between supporting structures, such as pylons.

[0058] Such overhead line conductors are typically formed from a variety of strands—such as aluminum conductor reinforced steel (ACSR), all-aluminum conductor (AAC), or all-aluminum alloy conductor (AAAC). While the properties of the overhead line conductor can vary depending on its specification, the overhead line conductor, for example, can be an ACSR "Chukar" conductor, which essentially has a 3.092 kg / m and a diameter of 40.7 mm.

[0059] In an exemplary embodiment, the support cable and thus the festoon pulleys can be deployed along the existing overhead line cable by a pulling robot, such as a cable trolley. Pulling robots, tugs, or cable trolleys, such as the pulling robot supplied by ZECK GmbH with model number LKE 85 "Pulling Robot," are known in the field for their ability to traverse a span while towing a steel cable and attached pulley blocks.

[0060] Any suitable rope known in the art can be used as the suspension rope, for example, a fiber rope made of ultra-high molecular weight polyethylene (UHMwPE), such as that marketed by Koninklijke DSM NV under the brand name Dyneema ® at the time of application. The suspension rope can therefore be made of metal and / or plastic and can be a solid rope or a rope with strands made of metal and / or plastic.

[0061] After the support cable (and the festoon reels) have been towed along the existing overhead line cable, a tensioning device (e.g., a ground tensioner) can be used to secure and tension the support cable. When tensioned, the support cable can rise above the existing overhead line cable, pivoting the festoon reels from their resting position to their holding position. The festoon reels then hold the overhead line cable, thus supporting the weight of the overhead line cable.

[0062] The existing overhead line cable can then be pulled through the festoon rollers. A leader cable can be attached to the end of the existing overhead line cable, allowing another overhead line cable to be pulled through the festoon rollers.

[0063] In one exemplary embodiment, the body of the garland roll may include a backing having first and second ends, a first lateral arm extending from the first end of the backing, and a second lateral arm extending from the second end of the backing, with the opening disposed between unconnected or free ends of the first and second lateral arms. Such a configuration may be generally "C"-shaped, although it should be appreciated that reference to such a shape is not intended as a limitation with respect to curvature or symmetry. Thus, the opening may be disposed off-center, that is, closer to one longitudinal end of the garland roll than to an opposite longitudinal end.

[0064] It should be noted that the reference to the interior of the body is not intended to imply that features located therein are completely enclosed. Rather, the interior defines a space through which at least one cable, i.e., the conductor cable and / or the support cable, can pass.

[0065] The description of exemplary embodiments of the body and the associated features will now be made with reference to sides, ends and surfaces of the body.

[0066] In an exemplary embodiment, the body may be made of an electrically non-conductive or insulating material. It is envisaged that the festoon reels and the overhead line auxiliary support system may be used near live cables—in this case, a current may be induced in an unconnected cable on which the festoon reel is used. In such an environment, it may be advantageous for devices (such as the festoon reel) that contact the cable to be non-conductive to reduce the likelihood of an arc or induced current through the device. Furthermore, the risk of corona discharge in high-voltage systems can be increased by the presence of irregular shapes or sharp edges, so it is advantageous for devices in contact with conductor cables to be non-conductive.

[0067] In an exemplary embodiment, the body may be made of a plastic material or of an electrically insulating die-cast material. The plastic material may be, for example, polyamide nylon with optional glass fiber reinforcement. It should be noted that this is not intended to be limiting, and any other suitable material known to a person skilled in the art may be used. In an exemplary embodiment, the body may be manufactured as a unitary part and manufactured, for example, by printing, casting, machining, or milling. A unitary part may be a one-piece, machined and / or handled part.

[0068] It is envisioned that such materials, in addition to the electrical insulating properties of suitable materials, may also exhibit suitable mechanical properties in terms of strength, without the fragile hardness of metals such as steel. Existing steel festoon reels may pose a higher risk of cutting and damaging the strands of the conductor or catenary cable if they fall onto or are dragged along the conductor or catenary cable.

[0069] In an exemplary embodiment, the festoon pulley may include at least one cable guard between the body and a flange of the pulley, possibly formed by a longitudinal end of the pulley. It is contemplated that this may reduce the likelihood of stray conductor strands becoming trapped between the pulley and the body. In an exemplary embodiment, the cable guard may extend over a portion of the pulley. The cable guard may also be referred to as a pulley guard.

[0070] In an exemplary embodiment, the rope guard may comprise a surface that forms a substantially continuous profile with the rope pulley in at least one direction.

[0071] In an exemplary embodiment, the rope protector may be attached to a side of the body opposite the end from which the existing conductor rope is to be pulled through.

[0072] In an exemplary embodiment, the opening into the interior of the body and the main barrier are located on a side or a portion of the side of the body that extends between the pulley and a distal end of the body spaced from, and possibly most spaced from, the pulley.

[0073] The main lock can be any suitable structure for selectively blocking the opening. For example, the main lock can be an arm or leg that moves relative to the body about a connection point located on one side of the opening. The connection point can be, for example, a hinge that allows pivoting movement of the main lock relative to the body.

[0074] In an exemplary embodiment, the main lock can be movable into the interior of the body and, for example, pivotable. This can facilitate the installation of the festoon roll, as the festoon roll can be effectively placed on the ladder rope in a single movement, possibly one-handed, by pushing or pulling.

[0075] In an exemplary embodiment, the main lock may rest against the body in its closed position to prevent outward opening due to internal forces from the conductor or support cable. In its closed position, the main lock may therefore rest against an inward-facing side of the body. A bearing portion of the body against which the main lock rests in its closed position may provide a stop for the main lock. For example, a free end of the main lock may rest against the body in the closed position of the main lock. This may reduce the likelihood of the conductor and / or support cable moving from the inside during use of the festoon reel - instead, a worker must manually push the main lock inward to remove the main lock from blocking the opening and to remove the conductor and / or support cable from the inside.

[0076] According to one embodiment of the garland roller, the main lock is designed to increasingly block the opening in its closed position depending on the load, wherein the main lock can be designed to be fixed in its closed position depending on the load in order to block the opening.

[0077] In an exemplary embodiment, the garland roller may include a locking pawl between an unconnected end of the main lock and the body in the closed position to help balance the loading forces from the side of the body being used. For example, the locking pawl may have a locking projection on the body that is received by a locking recess on the main lock, or vice versa.

[0078] The pawl can be a locking device, and the body can have a counter-locking device for the locking device. When the main lock is closed, the locking device and the counter-locking device can engage with each other and thus transmit mechanical loads across the opening when the main lock is closed.

[0079] In an exemplary embodiment, the main lock may include a locking device that must be released by a user before the main lock can be opened.

[0080] In one exemplary embodiment, the main gate can be pre-tensioned toward the closed position. It is envisioned that this can help facilitate installation of the festoon roll with a reduced number of steps, which the worker may need to perform with only one hand. If the main gate is moved from its closed position, such as when the conductor or support rope is moved through the opening, the main gate can automatically return to the closed position after the conductor or support rope has passed through the opening.

[0081] In an exemplary embodiment, the garland roller can include a pre-tensioning device for the main lock. The pre-tensioning device can include a spring, for example, a torsion spring, which can be provided or formed together with the hinge.

[0082] In an exemplary embodiment, the garland roller may comprise means for positioning the support cable in order to position the support cable relative to the body.

[0083] In an exemplary embodiment, the means for positioning the support cable can be arranged inside the body or adjacent to the interior. Thus, the main barrier can serve not only to prevent the conductor cable, but also the support cable from being accidentally moved out of the interior through the opening.

[0084] In an exemplary embodiment, the means for positioning the support cable can comprise a recess, wherein the recess can be arranged in the body and open into the interior of the body. The positioning means can be arranged at an end of the body that is farther away from the cable pulley than an opposite end of the body. The recess can open toward the cable pulley.

[0085] In an exemplary embodiment, the means for positioning the support cable can comprise a second lock that is movable between a position in which the recess is blocked from the interior and a position in which the recess is open towards the interior. In an exemplary embodiment, the second lock can be pivotable, for example, about a connection point with the body. The recess can have a cavity on one side for receiving the second lock. In its open position, in which the support cable can be moved into the recess, the second lock can be arranged in the cavity and, for example, pivoted therein.

[0086] In an exemplary embodiment, the second barrier may be biased towards the position in which the recess is blocked. The position in which the second barrier blocks access from the interior to the recess may be referred to as the closed position. As in the case of the main barrier, this may facilitate the installation of the support cable - the operator can pivot the main barrier manually or preferably with the support cable from its position in which it closes the opening to the interior, thereby moving the support cable inside. Furthermore, the operator can move the second barrier manually or preferably with the support cable from the closed position to the open position, thereby moving the support cable past the second barrier arranged in the open position into the recess.

[0087] In an exemplary embodiment, the means for positioning the suspension cable can be located at a vertex of the interior of the body or at one of the ends of the body. A surface of the body adjacent to the interior can guide the suspension cable to the positioning means.

[0088] In an exemplary embodiment, a fixing device for the support cable may be provided to limit relative movement of the garland roll along the support cable. This can help ensure that, when multiple garland rolls are attached to the support cable, their spacing from one another cannot easily change.

[0089] In an exemplary embodiment, the fixing device can consist of one or more components that are separate from the garland roll. These components can, for example, be clamps that are positioned or can be positioned along the support cable in front of and behind the garland roll.

[0090] The fixing device can be provided separately from the garland roll and can be handled separately. Alternatively or additionally, the garland roll can have a fixing device for the supporting cable.

[0091] The fixing device for the suspension cable can, for example, contain a pressing surface that makes pressing contact with the suspension cable when the fixing device is attached to the suspension cable. A pressing force that acts between the pressing surface and the suspension cable and prevents displacement of the fixing device along the suspension cable can be applied by means known in the art - such as a locking lever or a pretensioning device such as a spring. For example, the fixing device can be designed in several parts, with the parts or components of the fixing device acting on the suspension cable from different and, for example, opposite sides. The parts or components can be fastened to one another by form-fitting, force-fitting and / or material-fitting fastening. The fastening can apply the pressing force. For example, the components can be screwed together in a force-fitting manner.

[0092] In an embodiment not belonging to the invention, the garland roller may have a deflection projection extending from the body into the interior. The deflection projection may be arranged between the cable roller and the means for positioning the support cable.

[0093] In use, the deflection projection can serve to create a surface against which the conductor cable can rest when the support cable is taut. By determining the position at which this occurs, it is intended that this can help ensure that the garland roll can always be fully pivoted over a desired range of motion and in a desired direction, or tip over.

[0094] In an embodiment not belonging to the invention, the deflection projection extends from a position between the pulley and the end of the body furthest from the pulley (i.e., distal). In embodiments where the positioning device for the support cable is located inside the body at the end distal from the pulley, this position can help limit the path of the conductor cable inside to assist in pivoting or tipping the festoon roll, while maintaining a desired distance between the support cable and the conductor cable.

[0095] In an embodiment not forming part of the invention, the surface of the deflection projection facing the pulley can be angled from the pulley to the distal end of the body. In particular, the surface of the deflection projection facing the pulley can be concavely curved. This allows the swiveling or tipping of the garland roll to occur as a uniform movement.

[0096] In an embodiment not belonging to the invention, the surface of the deflection projection may be shaped such that its apex is offset laterally from the center of mass of the garland roll, away from the main barrier. It is envisaged that this may help to assist the swinging or tipping of the garland roll in a repeatable manner, so that when multiple garland rolls are used, they swing or tip in the same direction.

[0097] In an embodiment not belonging to the invention, the garland roller can have a second deflection projection that extends from the main barrier toward the other deflection projection when the main barrier is in the closed position. The second deflection projection can cooperate with the other deflection projection to form the previously described support surface during pivoting or tipping. It should be noted that while the second deflection projection is described with reference to the other deflection projection, in an exemplary embodiment, the garland roller has only one deflection projection extending from the main barrier.

[0098] In an embodiment not belonging to the invention, the surface of the second deflection projection which faces the pulley can also be angled away from the pulley towards the distal end of the body, i.e. can extend away from the pulley.

[0099] In an embodiment not belonging to the invention, the garland roll has a gap between the deflection projections when the main barrier is closed. The gap can have a clear width that is smaller than the clear width of the opening. Alternatively or additionally, the gap can have a clear width that substantially corresponds to a clear width of the recess. The gap can be sufficient to move the support cable through the gap. Consequently, the main barrier can be used to insert the conductor cable and the support cable into the interior through the opening and / or to remove them from the interior. However, if the support cable has a smaller diameter than the conductor cable, the gap prevents the conductor cable from moving behind the deflection projections as seen from the cable roll.If the garland roll has only one deflection projection, the gap can be provided between a free end of the deflection projection and a section of the body adjacent to the interior.

[0100] In an exemplary embodiment, the connection point of the main barrier to the body can be located on the side of the opening distal from the pulley. The connection point can therefore be arranged at the end of the opening furthest from the pulley. Consequently, a free end of the main barrier, which is opposite the connection point, can point substantially towards the pulley. If this free end is moved and pivoted, for example, when inserting the conductor cable, this can result in a continuous insertion volume for the conductor cable that can extend from the opening to the pulley. The insertion volume can be designed such that it extends substantially straight from the opening to the pulley. This can simplify the insertion of the conductor cable into the interior of the garland roll.

[0101] It may be provided that this contributes to facilitating the operation of the garland roller in the designs including the deflection projections and the means for positioning the support cable located inside the body.

[0102] According to the invention, the deflection projections are replaced by partial pulleys. The partial pulley can have a pulley diameter transverse to its pulley axis. Along the pulley axis, the pulley diameter can decrease at least in sections. The partial pulley can have a free end, whereby the pulley diameter can decrease towards the free end. If the partial pulley is arranged on the body, its free end can point towards the main barrier. If the partial pulley is arranged on the main barrier, its free end can point towards the inside of a section of the body opposite the main barrier. According to the invention, the garland pulley has two partial pulleys instead of the deflection projections, whereby the gap is formed between the free ends of the partial pulleys. The two partial pulleys can be designed such that their pulley diameter reaches its minimum at their free ends.Each of the partial rope pulleys can also be referred to as a deflection pulley. If two partial rope pulleys are provided, their free ends can face each other. If two partial rope pulleys are provided, their pulley axes can be aligned.

[0103] The position of at least one of the partial pulleys can be selected and / or its pulley diameter running transversely to its pulley axes can be dimensioned such that the distance between the partial pulley and the pulley is smaller than the diameter of a conductor rope onto which the garland pulley can be placed. For example, the distance is less than 90%, less than 75%, less than 60%, less than 50%, less than 40%, less than 30%, less than 20% or less than 10% of the diameter of the conductor rope. For example, the distance is less than 20 mm, less than 18 mm, less than 16 mm, less than 14 mm, less than 12 mm, less than 10 mm, less than 8 mm, less than 6 mm, less than 4 mm or less than 2 mm.

[0104] The partial pulley, and in particular its base, may even contact the rope pulley, and in particular one of the ends of the rope pulley. The distance can therefore be zero or almost zero.

[0105] Particularly in the area of a foot of the partial pulley opposite the free end, the pulley diameter can be dimensioned such that the distance between the partial pulley and the pulley is smaller than the diameter of a conductor onto which the pulley can be placed. For example, the distance is less than 90%, 75%, 60%, or less than 50% of the diameter of the conductor. For example, the distance is less than 20 mm, less than 18 mm, less than 16 mm, less than 14 mm, less than 12 mm, less than 10 mm, less than 8 mm, less than 6 mm, less than 4 mm, or less than 2 mm.

[0106] The partial pulley, and in particular its base, may even contact the rope pulley, and in particular one of the ends of the rope pulley. The distance can therefore be zero or almost zero.

[0107] The partial rope pulley opposite the main lock can provide a stop for the pivot lever and specify the pivot angle.

[0108] The length of the partial rope pulley arranged on the main barrier can be dimensioned such that when a force acts on the partial rope pulley in the direction of the second barrier, a resulting force vector points between the axis of rotation and the free end of the swivel arm.

[0109] The partial rope pulleys can be of different lengths.

[0110] At least the partial pulley opposite the main barrier can be shaped such that a side pointing away from its free end and towards the body, which side can be part of the base of the partial pulley, at least partially recreates a curvature of a section of the body between the pulley axis of the partial pulley and the second barrier.

[0111] In an exemplary embodiment, the festoon roll may include a counterweight or auxiliary weight. The counterweight may be positioned to assist in pivoting or tipping the festoon roll in a desired direction—particularly during tensioning of the support cable to accommodate the weight of the conductor cable. The counterweight itself may be provided by any suitable means—for example, as a fixed mass attached to the body, whether detachably or permanently.

[0112] In an exemplary embodiment, the counterweight may be arranged near the end of the body where the means for positioning the suspension cable is located.

[0113] In an exemplary embodiment, the counterweight may be located on the side of the body having the opening to the interior. Alternatively, the counterweight may be located on the side of the body opposite the side with the opening to the interior. This may promote pivoting or tipping of the festoon roll in a predetermined direction. In particular, if the counterweight is arranged on the side of the body having the opening, this may reduce the likelihood of the conductor striking or exerting strong pressure on the main barrier during pivoting or tipping, which may reduce the likelihood of the main barrier failing and the conductor being accidentally released.

[0114] The garland roll may include a counterweight shroud on the outside of the body to maintain a substantially continuous profile and reduce the likelihood of snagging. The substantially continuous profile may be one that has no edges along its length, for example, at the transition from the garland roll body to the counterweight.

[0115] The overhead line auxiliary support system may comprise the hoist rope, which may serve, among other things, to lift the garland roll into a working position in which it can be attached to the support rope and / or the conductor rope.

[0116] In an exemplary embodiment, the hoist rope may comprise a main rope and a plurality of secondary ropes. Each secondary rope may be attached to the main rope at a distance from another of the secondary ropes. A garland roller may be attachable to the free end of one or more of the secondary ropes.

[0117] In an exemplary embodiment, the garland roller can have an attachment element on its outer side facing away from the interior for attaching the free end of at least one of the secondary cables. For example, the attachment element can be attached to the outer side of the end of the body that is located closer to the cable roller than the opposite end of the body. The attachment element can be designed as an eyelet. For example, a fastening means such as a snap hook can connect the hoist cable to the attachment element.

[0118] The secondary ropes can be up to 1.0 m, 1.5 m, 2.0 m, or up to 2.5 m long and provide the user with sufficient slack to attach a festoon reel to the support rope and / or the conductor rope. Once the festoon reel is attached to the support rope and / or the conductor rope, it can be detached from the hoist rope. This reduces the risk of the festoon reel falling from a height during installation. Alternatively, the festoon reel can be first detached from the secondary rope and then attached to the conductor rope or the support rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] For a better understanding of the present invention, reference is made below to the drawings. These show only exemplary embodiments of the subject matter of the invention. Features of these exemplary embodiments can be combined independently of one another.

[0120] In the figures and the associated description, identical or equivalent parts are provided with the same reference symbols. Figures 1A to 4 , refer to embodiments of a garland roll not belonging to the invention. Figure 1A shows schematically an embodiment of a garland roll in a perspective view; Figure 1B shows a further embodiment of the garland roll; Figure 1C shows an enlarged view of a further embodiment of the garland roll; Figure 1D shows the embodiment of one of the previous figures in a side view; Figure 1E shows the embodiment of the Figure 1A in a top view; Figure 2 shows the embodiment of the Figure 1A in a further side view; Figures 3A-D show the garland roll of the embodiment shown in the previous figures in different usage positions; Figure 4 shows the embodiment of the Figure 1Aand an exemplary hoisting cable system for transporting the garland roll to and from an elevated working position; Figures 5A-L show an example of a possible installation and use of an overhead line auxiliary support system with a conductor cable; Figure 6 shows the embodiment of the overhead line auxiliary support system of the Figures 5A-L in a perspective view, with the conductor cable resting on pulleys of the garland rolls hanging on the support cable; Figure 7 shows the embodiment of the overhead line auxiliary support system of the Figures 5A-L in a side view, wherein the rope pulley of one of the garland pulleys rests on the conductor rope; Figure 8 shows an embodiment of a fixing device according to the invention; and Figure 9 shows an embodiment of a garland pulley according to the invention. DETAILED DESCRIPTION

[0121] Figure 1Ais a perspective view of a garland roll 100, for example, having a substantially "C"-shaped body 102. The body 102 has an opening 104 between an exterior and an interior of the body 102. The opening 104 may have a first opening side 106a and a second opening side 106b, which may be opposite each other and flank the opening 104.

[0122] The body 102 may have a first end 108 and a second end 110 opposite the first end 108, a left side 112 and a right side 114 opposite the left side 112, and a front side 116 and a back side opposite the front side 116.

[0123] Furthermore, the garland roll 100 may include a pulley 118 that may be rotatably mounted on an axle 120. The pulley 118 may be disposed inside the body 102 and extend through the interior of the body 102 from the left side 112 to the right side 114. The pulley 118 may be disposed at one end of the interior closer to the second end 110 than to the first end 108.

[0124] The garland roll 100 may include a rope guard 122 that may extend from the front 116 of the body 102 and partially over the rope roll 118.

[0125] The garland roll 100 has a main lock 124 that is movable between a closed position in which it blocks the opening 104 and an open position in which it allows passage from the outside to the inside through the opening 104. In the open position, the main lock 124 can be arranged further inside than in the closed position. Figure 1A the main lock 124 is shown in its closed position.

[0126] The main lock 124 can extend over the opening 104 in its closed position. The main lock 124 can be formed as part of a hinge, wherein the hinge axis of the hinge can be attached to one of the opening sides 106a, 106b, and in particular to the first opening side 106a. This enables a pivoting movement of the main lock 124 between the open and closed positions. The main lock 124 can be formed, for example, as a flap.

[0127] The garland roller 100 may include a deflection projection 126 disposed within it. The deflection projection 126 may extend laterally from the left side 112 toward the right side 114. The deflection projection 126 may be disposed between the cable pulley 118 and the end 108 farther from the cable pulley.

[0128] Alternatively or in addition to the deflection projection 126, the garland roll 100 can have a second deflection projection 128 arranged inside. The second deflection projection 128 can, for example, be arranged on an inner side facing inward in the closed position of the main lock 124 and extend toward the left side 112 of the body opposite the opening 104.

[0129] If the garland roll 100 has both deflection projections 126, 128, a gap 130 can remain between their free ends. The gap 130 can be dimensioned such that a support cable can be moved through the gap 130, but not the smallest possible conductor cable.

[0130] The garland roller can have a positioning device for a support cable, which predetermines a desired position for a support cable. The gap 130 can be arranged between the cable roller 118 and the positioning device. In particular, the positioning device can be arranged at the first end 108.

[0131] The positioning device can have a recess 132 for receiving a support cable. The cross-section of the recess 132 can substantially correspond to the cross-section of the support cable. The recess 132 can open inward, for example, toward the cable pulley 118.

[0132] The positioning device 132 may have a cavity 134 that may adjoin and merge into the recess 132, so that the cavity 134 and the recess 132 form a common, continuous and free volume.

[0133] The positioning device may include a second lock 136 that is movable between a position in which it blocks the recess from the interior and a position in which it releases the recess to the interior. For example, the second lock 136 is part of a hinge whose hinge axis may be attached to the body 102. In particular, the hinge may be attached to a portion of the body 102 adjacent to an opening of the recess 132, with which the recess 132 opens to the interior.

[0134] When the second barrier 136 exposes the recess to the interior, the second barrier 136 may be at least partially disposed within the cavity 134.

[0135] The garland roll 100 may have a possibly cylindrically shaped counterweight 138. In the illustrated embodiment, the counterweight 138 is shown arranged and attached to the right side 114 of the outer side of the body 102. In particular, the counterweight may be arranged at a location between the opening 104 and the apex of the outer side of the first end 108.

[0136] The garland roll 100 may include an attachment element for attaching a conveyor cable. The attachment element may be arranged at least partially on the outer side of the body 102 facing away from the interior. The attachment element may include an eyelet 140 attached to the outer side. In particular, the attachment element may be arranged at the second end 110 of the body 102. The eyelet 140 enables the connection of the garland roll 100 to a conveyor line via a releasable closure, such as a snap hook.

[0137] Figure 1B shows a further embodiment not belonging to the invention. For the sake of brevity, only the differences to the embodiment of the Figure 1A For elements that correspond in form or function to elements of the previous embodiment, the same reference numerals are used.

[0138] Figure 1B shows the garland roll 100 with its front side 106b facing out of the plane of the drawing. In the exemplary illustration shown, the free end of the main lock 124 protrudes beyond the opening 104, so that the main lock 124 rests against the second opening side 106b when closed. The main lock 124 can therefore have a length extending away from the hinge axis that is greater than the clear width of the opening 104.

[0139] The garland roll may include a load transfer device that transfers a mechanical load across the opening 104 and, for example, from one of the ends 106a, 106b to the other of the ends. For example, a free end of the main lock 124 may include a retaining element and the body may include a counter-retaining element, wherein the retaining element and the counter-retaining element, when the main lock 124 is in the closed state, transmit mechanical loads from the end 106b into the main lock 124. The main lock 124 transmits the mechanical loads to the other end 106a. The garland roll 100 may include a locking pawl between an unconnected end of the main lock 124 and the body to assist in balancing the loading forces by the side of the body in use. For example, the locking pawl may include a locking projection on the body that is received by a locking recess of the opening 104, or vice versa.

[0140] The holding element is, for example, designed to be essentially complementary to the counter-holding element. The counter-holding element is in the Figure 1B Illustrated by way of example as a retaining projection 142, which engages in the retaining element formed as a receiving opening. The retaining projection can extend substantially perpendicular to the opening 124 and / or parallel to the rotational axis of the cable pulley 118.

[0141] The deflection projection 126 and the second deflection projection 128 can each have a deflection surface 144, 146, which can face the cable pulley 118. As they extend toward the free end of the respective deflection projection 126, 128, the deflection surfaces can at least partially approach the first end 108 of the body 102, which is further away from the cable pulley 118. In particular, the deflection surface 144 of the deflection projection 126 can be curved and, for example, concavely curved. In addition to providing a smoother transition profile for the support cable and / or the conductor cable, i.e., one with few or no edges or corners, the at least one deflection surface 144, 146 can provide a substantially funnel-shaped guide for the support cable. If the garland roll 100 has only one deflection projection 126, 128, the deflection surface 144, 146 can form the funnel-shaped guide with the inner side of the body adjacent to the inside.If the garland roll 100 has both deflection projections 126, 128, the deflection surfaces 144, 146 can together form the funnel-shaped guide.

[0142] Figure 1C shows a further embodiment not forming part of the invention. For the sake of brevity, only the differences from the previous embodiments are discussed below. The same reference numerals are used for elements that correspond in form or function to elements of the previous embodiments.

[0143] Figure 1C shows an exemplary design in which the deflection projection (in Figure 1C designated 126a) and the second deflection projection (in Figure 1Cdesignated 128a) have deflection surfaces (144a and 146a, respectively) facing the cable pulley 118 and shaped such that their apex is shifted to a point remote from the counterweight 138. The apex points are thus arranged closer to the side of the body 102 opposite the opening 104 than to the opening 104. This can contribute to a more reproducible pivoting or tipping of the garland roll 100 when the garland roll 100 is used.

[0144] With reference to Figure 1B It can be seen that the positioning device positioning the support cable and, for example, its recess 132 can be located at the apex of the inside of the body 102. Sections of the inside of the body that are adjacent to the positioning device guide the support cable to the positioning device and, for example, to its recess 132 after the support cable has passed through the gap 130.

[0145] In an exemplary and in the Figure 1B In the further developed embodiment of the garland roll 100 according to the invention shown, a casing 148 for the counterweight 138 is provided on the outside of the body 102. The casing 148 can form a substantially continuous profile with the outside. The outside of the body 102 and the outside of the casing 148 can thus merge into one another essentially seamlessly or without edges. The outside of the garland roll 100 formed by the outside of the body 102 and the outside of the casing 148 can therefore be free of steps or edges, at least in the region of the transition from the outside of the body 102 to the outside of the casing 148.

[0146] Figures 1D and 1Eshow the garland pulley 100 of one of the previous embodiments from the right side 114, on which the counterweight 138 is arranged. The cable guard 122 extends from the front side 116 of the body 102 beyond the cable pulley 118.

[0147] As in Figure 1E As can be seen, the pulley 118 may have a groove 150 between the flanking raceways 152. The cable guard 122 may extend beyond the raceways 152 to prevent any gap that may exist between the pulley 118 and the body 102 from being exposed. Inner surfaces 154 of the pulley 122 may be shaped to continue the raceways 152. Thus, the inner surfaces 154 and the raceways 152 may form a substantially continuous profile 156 with the groove 150 of the pulley 118.

[0148] Figure 2 shows the garland roll 100 of one of the previous embodiments in a side view.

[0149] Figure 2 shows the main lock 124 and the second lock 136 in their respective open positions.

[0150] The main lock 124 and the secondary lock 136 may be biased toward their closed position, for example by torsion springs. The direction of the bias is Figure 2 marked with the reference symbols A and B.

[0151] This may allow a user of the garland roll 100 to not have to manually operate either the main lock 124 or the second lock 136.

[0152] Figures 3A to Figure 3D shows the movement of the garland roll 100 of one of the previous embodiments relative to an existing conductor cable 300 and a support cable 302.

[0153] In Figure 3AThe garland roll 100 hangs with its pulley 118 on the conductor cable 300. The support cable 302 may be slack at this time. When tensioning the support cable 302, the garland roll 100 may pivot or tilt around the conductor cable 300. The conductor cable 300 may slide from the pulley 118 onto the deflection projection 126, as shown in the Figures 3B and 3C As soon as the support cable 302 is taut, it can carry at least part of the load of the conductor cable 300, which can now rest on the cable pulley 118.

[0154] Figure 4 shows a hoist rope system 400 with which, for example, several of the inventive garland rollers 100a-n can be lifted into a working position. In the working position, which is usually arranged at a great height, for example, when an overhead cable is to be replaced as a conductor rope, the garland rollers 100a-n can be attached to the support rope and / or the conductor rope (not shown in Figure 4).

[0155] The hoist cable system 400 may include a main cable 402 and a plurality of secondary cables 404a-n. Each of the secondary cables 404a-n may be attached to the main cable 402 at one of its ends, with the secondary cables 404a-n preferably being attached to the main cable 402 at a distance from one another. The garland rollers 100a-n may be attached to the free ends of the secondary cables 404a-n, for example, with snap hooks 406a-n and / or through eyelets 140.

[0156] The main rope 402 can be guided over one or more pulleys 408 to facilitate the lifting of the garland rolls 100a-n into the working position.

[0157] Figures 5A-5Lshow a conductor cable, such as an overhead line cable, which may be formed, for example, as a high-voltage power transmission line 500, in various stages of installation, and the use of an overhead line auxiliary support system according to the invention, in which a plurality of festoon rolls 100 according to the invention are used.

[0158] In the Figure 5A The high-voltage line 500 hangs between two support structures depicted as pylons, including the first pylon 502a and the second pylon 502b. The pylons each include an insulator assembly (chain) 504 supporting a cable pulley 506 from which the existing conductor cable 508 is suspended.

[0159] In the first step of installing the overhead line auxiliary support system, the garland rollers 510 can be arranged on one of the masts 502b and / or on a support cable container on the ground. In particular, a support cable drum 512 can be installed on a side of the first mast 502a facing away from the mast 502b.

[0160] As in Figure 5C As can be seen, a support cable, designated here by reference numeral 514, can be guided over a first running wheel 510a and attached to a traction robot 516. The traction robot 516 can already be positioned on the existing conductor cable 508. The garland rolls 100 are raised to the level of the existing conductor cable 508—for example, using the hoist cable system 400 of the embodiment shown in the figure—and attached to the existing conductor cable 508 and the support cable 514.

[0161] An anchor cable 518 can, for example, be secured to the ground with a ground anchor 520 and guided over a wheel 510b. The anchor cable 518 can, for example, be attached to the support cable 514 with a shackle 522.

[0162] After the support cable 514 has been extended and attached to the anchor line 518, the support cable 514 can be connected to a hoist 524 - for example a TIRFORO hoist supplied by the TRACTEL Group - as shown in Figure 5D shown.

[0163] The support cable 514 can then be tensioned with the hoist 524 until the existing conductor cable 508 is pulled off the festoon rollers 100a-n, as shown in Figure 5F to be seen, is worn. Figure 3A-D illustrate the range of motion of the garland rolls 100a-n through this tensioning process.

[0164] The existing conductor cable 508 can now be pulled through the cable pulleys 506a and 506b. Beforehand, another conductor cable 526, which is to replace the existing conductor cable 508, can be attached to the existing conductor cable 508, for example, with a conductor connector 528. Thus, the other conductor cable 526 can follow the existing conductor cable 508 through the festoon rollers 100a-n - as shown in Figure 5G As soon as the other conductor cable 526 is pulled through - as in Figure 5H to see - it can be attached.

[0165] The overhead line auxiliary support system can then be dismantled again, for example by releasing the tension in the support cable 514 with the lifting device 524, so that the festoon rolls 100a-100n hang on the other conductor cable 526, as in Figure 5I The support cable 514 is then released from the anchor line 518 and the hoist 524 is separated from the support cable 514 to be recovered with the support cable drum 512, as shown in Figure 5J can be seen.

[0166] When recovering the support cable 514, the festoon rollers 100a-100n can first be removed from the other conductor cable 526 and the support cable, as shown in Figure 5K Once the festoon rolls 510a and 510b, the support cable 514 and the anchor line 518 are removed, the other conductor cable 526 can be fully installed in the high-voltage line 500, as shown in Figure 5L can be seen.

[0167] Figure 6 shows the previous embodiment of the overhead line auxiliary support system according to the invention in a demonstration setup and with several garland rollers 100 of at least one of the previous embodiments. The garland rollers 100 hang along the support cable 302 at a distance from one another, so that the conductor cable 300 rests on one of the cable rollers 118, respectively.

[0168] In order to prevent the garland rolls 100 from sliding or slipping on the support cable 302, a positioning device can be provided which holds the support cable 302 in a force-locking manner and, for example (reference numerals in the Figure 6 not shown for the sake of clarity).

[0169] Figures 7 and 8 show the embodiment of the Figure 6 in a side view, where in the Figure 7 the garland rolls 100 ( Figure 7 shows only one of the garland rolls 100 of the Figure 6 ) are shown tilted so that the pulley 118 rests on the conductor rope 300.

[0170] The fixing device 600 of the illustrated embodiment comprises two fixing devices or components 602, 604, with the illustrated garland roll 100 being arranged along the support cable 302 between these components 602, 604. The components 602, 604 can be fixedly attached to the support cable 302 before the support cable 302 has been positioned by the positioning device or afterward. The components 602, 604 can thus be provided in a manageable manner separate from the garland roll 100.

[0171] The components 602, 604 can be formed in multiple parts, wherein the parts 602a, 602b, 604a, 604b of the components 602, 604 can act on the support cable 302 from different and, for example, opposite sides. For example, the parts 602a, 602b, 604a, 604b of the components 602, 604 can each form one half of one of the components 602, 604.

[0172] The components 602, 604 may include at least one pressing surface that press-contacts the support cable 302 when the fixing device is attached to the support cable 302. A pressing force acting between the pressing surface and the support cable 302 and preventing the fixing device from moving along the support cable 302 may be applied, for example, by a locking lever or a pretensioning device such as a spring.

[0173] The parts 602a, 602b, 604a, 604b can be fastened to one another in a form-fitting, force-fitting, and / or material-fitting manner. The fastening can apply the pressing force. For example, the parts 602a, 602b, 604a, 604b can be screwed together in a force-fitting manner. In the exemplary representation of the Figure 8 Screws 606 can be seen, which provide a screw connection between the parts 602a, 602b, 604a, 604b.

[0174] Figure 9shows an embodiment of the garland roll 100 according to the invention. In the garland roll 100 of the exemplary embodiment of the Figure 8the deflection projections are each replaced by a partial pulley 700, 710. The partial pulleys 700, 710 can each have a pulley diameter Dr transverse to their pulley axes. Along the pulley axes, the pulley diameter Dr can decrease at least in sections. The partial pulleys 700, 710 can therefore taper along their length. The partial pulleys 700, 710 can have a free end, whereby the pulley diameter Dr can decrease towards the free end. The free end of the partial pulley 700 arranged on the body 102 can point towards the main barrier 124. The free end of the partial pulley 710 arranged on the main barrier 124 can point towards the section of the body 102 opposite the main barrier 124. The gap 130 can be formed between free ends of the partial pulleys 700, 710. The two partial rope pulleys 700, 710 can be designed such that their pulley diameter Dr reaches its minimum at their free ends.

[0175] At least at their free ends, the partial pulleys 700, 710 can have identical or different pulley diameters Dr. The pulley axes can be arranged aligned with one another, parallel to one another, offset from one another, and / or obliquely to one another, at least when the main barrier 124 is arranged in its closed position. The gap 130 remaining between the free ends can be dimensioned such that the partial pulley 710 attached to the main barrier 124 can pivot past the other partial pulley 700 when the main barrier 124 is opened. Alternatively or additionally, the lengths of the partial pulleys 700, 710 and / or their pulley diameters Dr (at least at the free ends) can be dimensioned such that the partial pulley 710 attached to the main barrier 124 can pivot past the other partial pulley 700 when the main barrier 124 is opened.

Claims

1. A garland roller (100), having: a body (102) having an interior and an exterior, and having an opening (104) between the interior and the exterior; a main locking device (124) which is movable between a closed position in which the opening (104) is blocked, and an open position in which the passage from the exterior to the interior is possible through the opening (104); and a cable pulley (118) positioned in the interior of the body (102), characterized in that the garland roller (100) has a first support cable pulley (700) which extends from the body (102) into the interior, wherein the first support cable pulley (700) is arranged between the cable pulley (118) and an end (108) of the body (102) which is spaced from the cable pulley (118), and wherein the garland roller (100) has a second support cable pulley (710) which extends in the closed position of the main locking device (124) in the direction of the first support cable pulley.

2. The garland roller (100) according to Claim 1, wherein the body (102) has a back (112) having a first end (108) and a second end (110), a first lateral arm which extends from the first end (108) of the back (112), and a second lateral arm which extends from the second end (110) of the back (112), wherein the opening (104) is arranged between free ends of the first and of the second lateral arm.

3. The garland roller (100) according to Claim 1 or 2, wherein the garland roller (100) has at least one cable guard (122) which is mounted between the body (102) and a longitudinal end of the cable pulley (118).

4. The garland roller (100) according to any one of Claims 1 to 3, wherein the opening (104) and the main locking device (124) are arranged on one side of the body (102) between the position of the cable pulley (118) and an end (108) of the body (102), which is spaced from the cable pulley (118).

5. The garland roller (100) according to any one of Claims 1 to 4, wherein the main locking device (124) is configured such that it is to be opened into the interior of the body.

6. The garland roller (100) according to any one of Claims 1 to 5, wherein the main locking device (124) is prestressed in the direction of the closed position.

7. The garland roller (100) according to any one of Claims 1 to 6, wherein the garland roller (100) has means for positioning a support cable (302) in relation to the body (102).

8. The garland roller (100) according to Claim 1, wherein a face of the support cable pulley (700) facing the cable pulley (118) is arranged running obliquely from the cable pulley (118) to the spaced end (108) of the body.

9. The garland roller (100) according to Claim 1, wherein a face (700) of the cable pulley (118) has a concave curvature.

10. The garland roller (100) according to Claim 9, wherein the face of the support cable pulley (700) which has the concave curvature is formed so that its vertex is arranged laterally offset from the center of mass of the garland roller (100), away from the main locking device (124).

11. The garland roller (100) according to Claim 1, wherein a gap (130) remains between the support cable pulleys (700, 710) which, if the main locking device (124) is closed, is sufficient in order to move a support cable (302) through the gap (130).

12. The garland roller (100) according to any one of Claims 1 to 11, wherein the garland roller (100) has a counterweight (138).

13. An overhead line support system, having: a plurality of garland rollers (100) according to any one of Claims 1 to 12; and a support cable (302) for suspension between two supporting structures, to which the garland rollers (100) are fastened.

14. A method for the deployment of an overhead line support system, in which a plurality of garland rollers are or will be fastened to a support cable, wherein the garland rollers are the garland rollers according to any one of Claims 1 to 12.