NL2036552B1 - Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope - Google Patents

Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope

Info

Publication number
NL2036552B1
NL2036552B1 NL2036552A NL2036552A NL2036552B1 NL 2036552 B1 NL2036552 B1 NL 2036552B1 NL 2036552 A NL2036552 A NL 2036552A NL 2036552 A NL2036552 A NL 2036552A NL 2036552 B1 NL2036552 B1 NL 2036552B1
Authority
NL
Netherlands
Prior art keywords
wedge
rope
wire rope
cable
holder
Prior art date
Application number
NL2036552A
Other languages
Dutch (nl)
Inventor
Corbeau Michel
Gommert Van Koeveringe Leendert
Van Sas Jason
Original Assignee
Nemag Ip B V
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nemag Ip B V filed Critical Nemag Ip B V
Priority to NL2036552A priority Critical patent/NL2036552B1/en
Priority to PCT/NL2024/050671 priority patent/WO2025127932A1/en
Application granted granted Critical
Publication of NL2036552B1 publication Critical patent/NL2036552B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
    • F16G11/044—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord
    • F16G11/048—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps friction clamps deforming the cable, wire, rope or cord by moving a surface into the cable

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

Title: Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope Abstract A wire rope clamp for clamping a wire rope is provided, comprising a holder provided with an opening for receiving a rope and a rope wedge channel, a rope wedge arranged in the rope wedge channel, the rope wedge comprising a rope clamping surface and a wedging surface, the holder further being provided with a rope supporting surface and with a wedge countering surface. A wedge countering surface of the holder extends along the wedging surface of the rope wedge to in use cooperate with the wedging surface of the rope wedge. The rope clamping surface of the rope wedge frictionally engages the rope section with a first amount of friction, and the wedging surface of the rope wedge frictionally engages the wedge countering surface with a second amount of friction, the second amount of friction being lower than the first amount of friction.

Description

P136250NL00
Title: Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope
The invention generally relates to clamping of wire rope.
Wire ropes, also known as steel cables, include strands of metal wire twisted into a rope. Such wire ropes may be used dynamically. e.g. for
Lifting and hoisting or for the transmission of mechanical power, or statically, e.g. for suspension or other transmission of force. Wire ropes as discussed herein typically have carbon steel wires. Wire ropes as discussed herein typically have a diameter of at least 10 mm, and the wires typically have a diameter of at least 0.5 mm. Wire ropes may even have a diameter of at least 20 mm, at least 25 mm, or even 40 mm or more or even 60 mm or more.
Wire ropes typically include connectors to connect the rope, e.g. an end connector to connect end of the rope to a connection point, e.g. a fixed mount or an attachment point of a tool. As the wire rope is built up of rope- laid bundles of relatively fragile individual strands of wire, care should be taken that coupling the connector does not unduly impact efficiency, functionality and life span of the rope. This may be achieved by permanently attaching a connector to a wire rope upon manufacture, e.g. through pressing the connector onto the rope, anchoring the connector to the rope or embedding strands of wire of the rope into a connector in a controlled environment.
Sometimes a connector needs to be releasably attached to a wire rope and/or needs to be attached to the wire rope in the field. A typical example is connecting and disconnecting a free end of a closing rope of a crane to a grab in the field, e.g. to switch grabs or replace ropes. In such case the free end of the rope first needs to be threaded through a number of sheaves that provide the necessary reeving pattern for operating the grab before it can be attached to the grab’s attachment point. Due to the limited clearance for the rope at the sheaves, the free end of the rope is to be threaded through without its connection in place. In practice, the connection is then made by attaching a clamp to the rope, the clamp carrying the end connection.
Conventionally a wire rope clamp known as a wedge socket 1s used, which includes a holder that is provided with a rope entrance opening for receiving a wire rope, a rope wedge channel and a rope wedge arranged in the rope wedge channel. In use, the free end of the wire rope is inserted through the rope entrance opening, bent around the wedge and looped back out via the rope entrance opening. Next, the wedge 1s pulled into the holder using the rope, so that two sides of the rope loop are clamped against the holder.
A disadvantage of the known wire rope clamp is that for of larger diameters, e.g. more than 20 or 40 mm, bending the rope around the wedge may in practice require quite a lot of manpower, time and effort. In addition, releasing the wire rope that is wedged into the holder can also require significant manpower, time and effort.
Alternative rope clamps have been proposed which also include a holder that is provided with a rope entrance opening for receiving a wire rope, a rope wedge channel and a rope wedge arranged in the rope wedge channel. In such clamps a straight free end of the rope may be inserted via the opening into the rope wedge channel, and may subsequently be symmetrically interposed between wedge sections. Upon pulling back of the rope, the wedge sections engage opposite walls of the channel, and wedge sections clamp the rope therebetween. Disadvantages of such clamps include that axial push force transmitted via the wire rope onto the clamp may push the sectioned wedge out of engagement, while under high tensile loads the clamping wedge sections may damage the rope and/or reduce its efficiency.
CN102701042, JPS5977150A, EP0179961A1 and US5392496A1 disclose wire rope clamps in which the wire rope is clamped between two wedges positioned on opposite sides of the wire rope. It has been observed that these wire rope clamps suffer from the disadvantage of the axial push force being transmitted via the wire rope onto the wedges, which may push the wedges out of engagement and/or may damage the rope and/or reduce its efficiency while under high tensile loads.
The invention aims to provide a wire rope clamp that alleviated the above disadvantages, while substantially maintain its advantages. In particular the invention aims to provide a wire rope clamp that can be attached and/or released to the rope relatively easily, in particular in the field, and with limited manpower, time and effort. In addition, the invention aims to provide such wire rope clamp with improved resistant to axial push force transmitted via the wire rope onto the clamp, and/or with which damage to the wire and/or reduction of efficiency under high tensile loads is lessened.
Thereto, the invention provides for a wire rope clamp for clamping a wire rope according to claim 1, comprising: -a holder that is provided with an opening for receiving a rope and a rope wedge channel, -a rope wedge arranged in the rope wedge channel, -the rope wedge comprising a rope clamping surface and a wedging surface, the wedging surface facing away from the rope clamping surface and extending at a rope wedging angle relative to the rope clamping surface, -the holder further being provided with a rope supporting surface and with a wedge countering surface, -the rope supporting surface of the holder extending along the rope clamping surface of the rope wedge to form an interspace therebetween in which in use a rope section, in particular a straight rope section such as a straight free end of a rope, extends that passes through the rope entrance opening into the rope wedge channel of the holder, -the wedge countering surface of the holder extending along the wedging surface of the rope wedge to in use cooperate with the wedging surface of the rope wedge, -wherein the rope clamping surface of the rope wedge is arranged to frictionally engage the rope section with a first amount of friction, and -wherein the wedging surface of the rope wedge is arranged to frictionally engage the wedge countering surface with a second amount of friction, the second amount of friction being lower than the first amount of friction.
By providing for lower friction between the rope wedge and the countering surface than between the rope wedge and the rope, it is relatively easy to pull the rope wedge into engagement by pulling back on the rope. Engagement of the clamp onto the rope can then be performed by simply inserting a straight section of the rope into the clamp via the rope insertion opening, e.g. axial insertion of a free end of the rope through the opening into the rope wedge channel to extend in the interspace between the rope wedge and the holder, and by subsequent pulling back of the rope until slippage between the rope and the holder stops for a given tensile load. The clamping force thus increases with axial load on the rope, and is related to the maximum axial load that has been put on the rope. The lower friction between the rope wedge and the countering surface facilitates disengagement of the rope wedge. Clamping the rope between the rope wedge and the holder increases resistance to axial push force compared to clamping the rope in between two rope wedges. As such, for any wire rope clamp disclosed herein, it is preferred that only a single side of the rope is pressed on via one or more wedges, while an opposite side of the rope is pressed against a non-wedge element, such as the holder.
An amount of friction may in this context be generally defined as an amount of force resisting two objects from moving relative to each other, for example two surfaces from slipping or sliding relative to each other. The amount of friction may be defined by a friction coefficient between two 5 contacting materials. An amount of friction may further be defined by two objects interlocking, which interlocking provides resistance against a relative movement of two objects, such as wire rope and a rope wedge or holder. Two objects may for example interlock when parts of the two objects overlap in a direction transverse to a pulling direction of a force pulling the objects away from each other. Sharp protrusions, profiling and/or grooves may for example be used to interlock two objects, thus increasing an amount of friction. A friction reducing intermediate structure, such as a bearing plate or roller set, may be used to decrease an amount of friction.
By clamping a straight section on the rope in the interspace between the rope clamping surface of the rope wedge and supporting surface of the holder, the wedge clamps the rope directly onto the holder, and is subject to force in two opposing directions only. This allows a flattening of the rope in which strands of wire are repositioned transverse to the clamping force. This prevents loss of rope efficiency due to damage or pinching of individual wires of the rope. Preferably, a portion of the circumference of the wire is left free to facilitate the cross section of the rope to change in form, e.g. two opposing lateral zones of the circumference of the rope in between opposing zones that contact the wedging surface and supporting surface respectively. This way, a clamped rope can be loaded axially until approximately the same breaking load without clamp.
Preferably, the wedging surface and the rope supporting surface extend substantially parallel to each other. The rope clamp may be provided with a connector, e.g. an eye or pin to connect the rope, e.g. to connect the rope to a connection point, e.g. a fixed mount or an attachment point of a tool. The rope clamp may also be directly connected to an implement or tool, e.g. a grab at an end of the rope or a stopper attached halfway along the rope. A straight section of rope is generally defined as a section of rope which is not bent back on itself, which would otherwise result in a generally U-shaped or
C-shaped rope section. Preferably, for any embodiment disclosed herein, no portion of the rope — at least at or near the clamped end of the rope - is bent back over itself.
The rope wedging angle (a) at which the wedging surface extends relative to the rope clamping surface is beneficially chosen between 3° and 9°, and preferably is 7°.
By providing the wedging surface and/or the wedge countering surface as a bearing surface of a slide bearing structure, the reduced friction between the wedging surface and its countering surface may be implemented relatively easily. Preferably, the slide bearing structure is provided on a body portion of the rope wedge.
By providing the slide bearing structure with at least one of a plastics material, preferably PTFE or Nylon, a composite material, bronze or cast iron a very low friction may be achieved compared to e.g. steel- steel contact, while pressure resistance 1s maintained.
A body portion of the rope wedge may comprises or may be is made of high strength steel , preferably S690, in particular when a roller set is used for cooperation between the wedging surface and the wedge countering surface. A body portion of the holder may comprises or may be made of mild steel, preferably S355.
The wedging surface and the wedge countering surface may cooperate via a friction reducing intermediate structure, preferably a bearing plate or roller set. Such roller set may e.g. include cylindrical rollers of hardened steel. As an alternative, such intermediate structure may be implemented as a slide plate of a pressure resistant low friction material, e.g. as mentioned above for the slide bearing structure.
By providing the clamping surface of the rope wedge with a groove that in use receives a portion of the mantle surface of the rope, frictional engagement may be facilitated. To further facilitate frictional engagement between the clamp and the rope, a surface of the groove may be provided with a profile to in use grip the mantle surface of the rope. Such profile may e.g. include ridges and/or indentations. Mild profiling is preferred so as to prevent damage to outer wires of the rope. The rope supporting surface is preferably smooth relative to the clamping surface so as to facilitate slippage of the rope relative to the rope supporting surface while the rope pulls the wedging surface into engagement with the wedge countering surface.
The countering surface may be provided on a surface of the holder.
In such configuration, a boundary of the wedge channel may be formed by a countering surface on the holder.
The countering surface may alternatively be provided on an auxiliary wedge, forming a releasable part of the holder, and arranged between the rope wedge and the holder. In such configuration, a boundary of the rope wedge channel may be formed by a countering surface on the auxiliary wedge. The auxiliary wedge may in use form part of the holder. As such, it will be understood that at least in use embodiments of the holder may consist of a single body, such as a body portion, or the holder may comprise multiple bodies which may be connected or may in use at least have contacting surfaces. For example, the auxiliary wedge may be a releasable part of the holder. For example, in use, an auxiliary countering surface of a body portion of the holder may contact an auxiliary wedging surface of the auxiliary wedge.
Such auxiliary wedge may be used as an option to facilitate disengagement of the clamp, and may comprises an auxiliary wedging surface that extends along a supporting surface of the holder to in use cooperate with said supporting surface of the holder. The auxiliary wedging surface may face away from the wedge countering surface and may extend at an auxiliary wedging angle (B) relative to wedge countering surface. The auxiliary wedging angle at which the wedging surface extends relative to the rope clamping surface is beneficially chosen between 7° and 20°, and preferably is 12°.
The rope wedge and the auxiliary wedge may then extend at a relatively large total wedging angle to facilitate release of the wedges. To counteract unintentional disengagement of the wire rope clamp during use, the rope wedge and/or the auxiliary wedge may be secured to the holder via a releasable securing structure. Preferably only the auxiliary wedge is secured to the holder. Such releasable structure may be a securing pin, screw or bolt, but may alternatively or in addition include a movable securing catch.
The invention further provides for a wire rope comprising a wire rope clamp in any of the variants as set out above or discussed below, wherein a rope section, in particular a straight free end of the rope, passes through the rope entrance opening into the rope wedge channel of the holder and is clamped in the interspace between the rope wedging surface of the rope wedge and the rope supporting surface of the holder and wherein the rope clamping surface of the rope wedge frictionally engages the rope section with a first amount of friction, and wherein the wedging surface of the rope wedge frictionally engages the wedge countering surface with a second amount of friction, the second amount of friction being lower than the first amount of friction.
To facilitate engagement of the wire rope clamp onto the wire rope, a portion of the rope section extending beyond the rope wedge may be provided with an auxiliary clamp to entrain the rope wedge and pull 1t into engagement upon retraction of rope through the rope entrance opening.
In addition, the invention provides for a method of clamping a wire rope clamp onto a wire rope using a wire rope clamp in any of the variants as set out above, wherein a section of the rope, in particular a straight free end of the rope, is inserted through the rope entrance opening of the holder of the rope clamp into the rope wedge channel so that a section of the rope to extends through the interspace between the rope clamping surface of the rope wedge and the rope supporting surface of the holder, and wherein the rope 1s retracted so that the rope engages the rope wedge via the rope clamping surface and entrains the rope wedge so that the wedging surface of the rope clamp is pulled into engagement with the wedge countering surface and the rope clamping surface of the rope wedge clamps the section of the rope onto the rope supporting surface of the holder.
In general, the shape of the rope clamping surface may be different from an outer shape of the wire rope, to prevent a form closed connection to be formed by the rope clamping surface and the outer shape of the wire rope. Instead, it is preferred that a force connection based on friction is achieved between the rope clamping surface and the wire rope.
When clamping a wire rope clamp onto a wire rope, as an option applicable to any method disclosed herein, it may be preferred to after inserting the rope through the rope entrance opening, and prior to the rope being retracted, couple the rope to the rope wedge, and subsequently bending the rope towards the rope wedge or at least bend the rope relative to the rope wedge. The bend formed by bending the rope may be used to retract the rope wedge further into the rope wedge channel when the wire rope 1s retracted in order to clamp the wire rope.
For example, the rope can be coupled to the rope wedge by a restriction member connected to or formed by a rear end of the rope wedge.
The restriction member is arranged to restrict movement of the wire rope relative to the rope wedge when bending the rope, to allow the rope to be bent instead of deflecting away from the rope wedge. As an option, the rope may be inserted into a passage of the restriction member prior to bending the rope towards the rope wedge.
The present disclosure also contemplates a method for unclamping a wire rope clamp from a wire rope, wherein the wire rope is clamped between a rope supporting surface of a holder of the wire rope clamp and a rope clamping surface of a rope wedge, which rope wedge is at least partially positioned in a rope wedge channel of the holder together with an auxiliary wedge. The method comprises steps of releasing a clamped connection between the auxiliary wedge, the holder, and the rope wedge, and removing the wire rope from the rope wedge channel, in particular in that order.
By virtue of being able to unclamp the wire rope clamp from the wire rope by releasing the clamped connection between the auxiliary wedge, the holder, and the rope wedge, the auxiliary wedge may be designed with a different purpose than the rope wedge: whereas the rope wedge can aid in clamping the wire rope when the wire rope is retracted so that the rope engages the rope wedge, the auxiliary wedge may aid in being able to conveniently release the wire rope from the wire rope clamp.
It will be understood that the wire rope clamp from which the wire rope in unclamped may be any wire rope clamp disclosed herein. The wire rope clamp may have been clamped onto the wire rope using any method disclosed herein.
Preferably, but not necessarily, the method further comprises removing the auxiliary wedge and the rope wedge from the rope wedge channel.
The invention will further be elucidated on the basis of exemplary embodiments which are represented in the drawings. The exemplary embodiments are given by way of non-limitative illustration of the invention.
In the drawings:
Figure 1A shows an embodiment of a wire rope clamp in a schematic isometric view;
Figure 1B shows the wire rope clamp in a side view;
Figure 2A shows the wire rope clamp in a section view along line B-
B;
Figure 2B shows a detailed view C;
Figure 3A shows an embodiment of a rope wedge in a isometric bottom view;
Figure 3B shows the rope wedge in a side view;
Figure 3C shows a section view of the rope wedge along line A-A;
Figure 4A shows an alternative embodiment of a wire rope clamp;
Figure 4B shows another alternative embodiment of a wire rope clamp;
Figures 5A and 5B show another embodiment of a rope clamp 1, respectively in an isometric view and a section view;
Figure 5C shows a detailed section view of a particular embodiment of a rope wedge;
Figure 6A shows a rear view, and Figure 6B shows a partial side view of a rope wedge which can be used in any rope clamp disclosed herein; and
Figures 7A, 7B and 7C show yet another rope clamp, respectively in a front view, section view, and an isometric view.
Figure 1A shows an embodiment of a wire rope clamp 1 in a schematic isometric view. Figure 1B shows the wire rope clamp 1 in a side view, with dashed lines generally indicating components which are not directly visible. The wire rope clamp 1 is clamped onto a wire rope section 11, which is particular is a straight free end of a wire rope, which for example may be a hoisting rope. The rope section 11 has been inserted through a rope entrance opening 3 of a holder 2 of the rope clamp 1. It will be understood that only a small part of the total length of the wire rope is depicted in the figures for clarity of these figures.
The holder 2 comprises a rope wedge channel 4, in which at least part of a rope wedge 5 is positioned. The rope wedge channel 4 is defined between a rope clamping surface 8 and a wedge countering surface 9 of an auxiliary wedge 17, which auxiliary wedge 17 is as such considered to be comprised by the holder 2. The holder 2 further comprises a holder body portion 14, which is formed by a body separate than the auxiliary wedge 17 such that the auxiliary wedge 17 is moveable relative to the holder body 14 at least during assembling of the rope clamp 1. The rope clamping surface 8 and the wedge countering surface 9 face each other and are oriented at an angle relative to each other. In particular, the rope wedge channel 4 is tapered in a direction corresponding to a tensioning direction 25 of the wire rope, as can be seen in the side view of Figure 1B. In other words, the rope wedge channel 4 is tapered towards the opening 3 of the holder 2.
Preferably, as an option for example depicted in Fig. 1A, the holder 2 is formed as a solid body — i.e. a body without internal degrees of freedom such as hinging parts — at least around the rope wedge channel 4. The wire rope 11 in such cases has to be inserted through the rope entrance opening 3 in order to pass through the rope wedge channel 4 from the front to the rear of the holder 2.
The auxiliary wedge 17 has a tapered shape, and in use is tapered towards the direction corresponding to a tensioning direction 25 of the wire rope. The tapered shape of the auxiliary wedge 17 is obtained by virtue of the angle between a wedge countering surface 9 of the auxiliary wedge 17 and an auxiliary wedging surface 18 on an opposite side of the auxiliary wedge 17.
The auxiliary wedge 17 in this embodiment provides that an angle a between the rope clamping surface 6 and the wedge countering surface 9 can differ from an angle a + B between the rope clamping surface 6 and the auxiliary wedge countering surface 9’ of the holder 2. The angle between the rope clamping surface 6 and the auxiliary wedge countering surface 9’ of the holder 2 thus corresponds to the sum of angles a and 6 indicated in Figure 1B. As such, a different amount of friction may be obtained between the wedging surface 7 of the rope wedge 5 and the wedge countering surface 9, and between the auxiliary wedging surface 18 of the auxiliary wedge 17 and the auxiliary wedge countering surface 9’ on the holder body portion 14. Also the angle between the auxiliary wedge countering surface 9’ and the rope clamping surface 6 may be changed, for example by changing one or both of angles a and B.
As can be seen in particular in the section view of Fig. 1B, the rope section 11 is positioned in an interspace 10 formed between the rope supporting surface 8 of the holder 2 and a rope clamping surface 6 of the rope wedge 5. The rope supporting surface 8 and the rope clamping surface 6 preferably extend substantially parallel. This provides for a clamping force onto the wire rope section 11 which is substantially perpendicular to an elongation direction of the wire rope section. This in turn may beneficially allow strands of wire comprised by the wire rope section 11 to reposition relative to each other, thus allowing flattening of the wire rope section 11.
Preferably, part of the circumference of the wire rope section 11 is left free to facilitate the cross-sectional shape of the wire rope section 11 to change form.
As shown in Figure 1B, within the wire rope clamp 1, different surfaces of different components can be forced against each other, in particular when the rope section 11 is tensioned in the tensioning direction 25. The rope section 11, when tensioned in a tensioning direction indicated with arrow 25 in Figure 1A, is clamped in the holder 2. In particular, the rope section 11 is preferably directly clamped against the rope supporting surface 8 of the holder 2, and indirectly clamped against the auxiliary wedge countering surface 9’ via the rope wedge 5 and the auxiliary wedge 17.
In use, when the wire rope section 11 has been positioned between the rope supporting surface 8 of the holder 2 and the clamping surface 6 of the rope wedge 5, the wire rope section 11 is pulled in the tensioning direction 25. During this pulling, for example by virtue of gravity and/or manual positioning, the wire rope section 11 contacts the rope supporting surface 8 as well as the clamping surface 6. Initially, the wire rope section 11 may slip relative to the rope supporting surface 8 and even relative to the clamping surface 6. However, as the rope wedge 5 moves further towards the opening 3 of the holder 2 — by virtue of the wedge surface 7 slipping relative to the wedge countering surface 9 - the wire rope section 11 only slips with the rope supporting surface 8 and substantially doesn’t slip with the clamping surface 6 of the rope wedge 5 — the wire rope section 11 thus pulls the rope wedge 5 further towards the opening 3.
As the rope wedge 5 is pulled further towards the opening 3, the clamping force of the rope wedge 5 pressing the wire rope section 11 against the rope supporting surface 8 increases to a level that the wire rope section 11 doesn’t slip anymore relative to the rope wedge 5.
The initial slip between the wedging surface 7 and the wedge countering surface 9 is achieved by a first amount friction between the rope clamping surface 6 and the rope section 11 being higher than a second amount of friction between wedging surface 7 of the rope wedge 5 and the wedge countering surface 9. A third amount of friction may be defined between the rope section 11 and the rope supporting surface 8. Initially, as the wire rope section 11 is tensioned, the third amount of friction is preferably lower than the first amount friction between the rope clamping surface 6 and the rope section 11 — allowing the wire rope section 11 to slip relative to the rope supporting surface 8 while the wire rope section 11 frictionally engages the rope wedge 5. In use, i.e. when the wire rope section 11 is tensioned and the wire rope is used for example for hoisting, the third amount of friction is sufficient to prevent the wire rope section 11 from slipping relative to the rope supporting surface 8. It will be understood that the third amount of friction between the rope section 11 and the rope supporting surface 8 depends on the clamping force clamping the rope section 11 between the rope supporting surface 8 and the rope clamping surface 6, which clamping force is oriented perpendicular to the rope supporting surface 8, and depends on the friction coefficient between the rope section 11 and the rope supporting surface 8. To release the wire rope section 11 from the wire rope clamp 1, the tension on the wire rope section 11 is preferably fully released. Next, one or both of the rope wedge 5 and the auxiliary wedge 17 are moved away from the opening 3 to relieve the clamping force squeezing the wire rope section 11 between the rope clamping surface 6 of the rope wedge 5 and the rope supporting surface 8 of the holder 2. To move the rope wedge 5 and/or the auxiliary wedge 17, the rope wedge 5 and/or the auxiliary wedge 17 may be impacted, for example using a hammer or other impact tool. To this end, preferably part 17° of the auxiliary wedge 17 protrudes out of the opening 3, as can be seen for example in Fig. 1A, to make impacting the auxiliary wedge 17 more convenient. When the wire rope clamp 1 comprises a releasable securing structure 23, it may be required to release this releasable securing structure 23 prior to impacting the auxiliary wedge 17. Additionally or alternatively, the wire rope section 11 may be pulled in an opposite direction than the tensioning direction in use, in order to move the rope wedge 5 and/or the auxiliary wedge 17 in a direction away from the opening 3.
A rope wedging angle a between the wedging surface 7 and the rope clamping surface 6 is indicated in Figure 1B. Preferably, the angle a is chosen between 3° and 9°, in particular between 5° and 8°, and preferably 7° or approximately 7°. An angle B is also indicated in Figure 1B as the auxiliary wedging angle between the auxiliary wedging surface 18 and the wedge countering surface 9. The angle B is preferably chosen between 7° and 20° in particular between 10° and 15°, and preferably is 12° or approximately 12°.
To prevent the auxiliary wedge 17 from being pushed away from the opening 3, the auxiliary wedge 17 is secured to the holder 2 via a releasable securing structure 23. In this particular embodiment, the releasable securing structure 23 comprise a locking plate 24 secured to the holder 23 using a bolted connection. The locking plate 24 is aligned with at least part of the auxiliary wedge 17, and thus prevents the auxiliary wedge 17 from releasing — in particular when the tension load on the rope 11 is low or even absent, but also in examples when the tension load in the rope 11 is high, which may result in a force on the auxiliary wedge 17 with a force component in a direction opposite to the tensioning direction 25. A force having a force component in a direction opposite to the tensioning direction does not necessarily mean that the direction of the force is in line with the tensioning direction — the force vector of the force on the auxiliary wedge may be described as the sum of: a force component in a direction opposite to the tensioning direction and in line with the tensioning direction, and another non-zero force component in a direction perpendicular to the tensioning direction. It will thus be understood that in examples, the auxiliary wedge may not be self-locking. In further embodiments, the locking plate 24 may also be aligned with at least part of the rope wedge 5 to prevent the rope wedge 5 from unintentionally releasing.
The auxiliary wedge 17 and/or rope wedge 5 may be pushed away from the opening 3 due to the clamping force on the auxiliary wedge 17 being oriented in a direction perpendicular to the auxiliary wedge countering surface 9’ and the clamping force on the rope wedge 5 being oriented in a direction perpendicular to the wedge countering surface 9.
The wire rope clamp 1 is in the example of Figures 1A and 1B provided with a connection eye 26 to connect the rope 1 to a connection point, e.g. a fixed mount or an attachment point of a tool.
Figure 2A shows a section view over line B-B, which line B-B is indicate in Figure 1B. Figure 2A shows the wire rope section 11 clamped in between the rope supporting surface 8 and the clamping surface 6 of the rope wedge 5.
Figure 2B shows a detailed view C, as is indicated in Figure 2A. In
Figure 2B, it is visible that the clamping surface 6 of the rope wedge 5 is in this embodiment provided with a groove 22. In use, and as depicted in
Figure 2B, the groove 22 receives a portion of an outer part of the wire rope section 11, which outer part may comprise a mantle surface.
As can be seen in Figures 2A and 2B, part of the circumference of the wire rope section 11 does not contact the holder 2 or rope wedge 5. This allows the cross-sectional shape of the wire rope section 11, visible in Figure 2B, to deform when the wire rope section 11 is clamped in between the rope supporting surface 8 and the rope clamping surface 6. In use, the cross- sectional shape of the wire rope section 11 may hence be non-circular.
As an option not depicted in the figures, at least part of a surface of one or more of the grooves 22 may be provided with ridges, teeth, protrusion, indentations, and/or other surface objects which may increase the amount of friction between the wire rope section 11 and the clamping surface 6 of the rope wedge 5 in which the grooves 22 are provided. The ridges, teeth, protrusion, indentations, and/or other surface objects may form a profile 16 to in use grip the mantle surface of the rope section 11. The profile 16 is schematically indicated in Figs. 3A and 3B.
The rope supporting surface 8 of the holder 2 is preferably substantially smooth, and hence not provided with surface objects such as ridges, teeth, protrusion, indentations, which may increase the amount of friction between the wire rope section 11 and the rope supporting surface 8 and/or to prevent damaging the mantle surface of the rope 11 when the rope 11 slips over the rope supporting surface 8.
A gap with non-zero height h is preferably present between the clamping surface 6 of the rope wedge 5 and the rope supporting surface 8 of the holder 2. The gap with non-zero height A in use ensures that clamping force is transmitted through the wire rope section 11, and is not directly transmitted between the rope wedge 5 and the holder 2 to ensure that the wire rope section 11 is actually clamped in the wire rope clamp 1.
Figures 3A-3C show an embodiment of the rope wedge 5, respectively in an isometric bottom view, side view with dashed lines generally indicating components not directly visible, and a section view over line A-A.
As shown in Figures 3A-3C, the rope wedge 5 can comprise a rope wedge body portion 13 and a slide bearing structure 12, which may be connected to the rope wedge body portion 13. The body portion 13 may provide the rope clamping surface 6, and the slide bearing structure 12 may provide the wedging surface 7. The body portion 13 and the slide bearing structure 12 may comprise different materials, optionally with different surface treatments. As such, the friction coefficient of the rope clamping surface 6 and the wedging surface 7 may be tuned independently by choosing different materials and/or surface treatments. In further embodiments, the material of the rope clamping surface 6 may even differ from the material comprised by the body portion 13.
For example, the slide bearing structure 12 may comprise low friction material, whereas the body portion 13 comprises material with a high stiffness against compression. Additionally or alternatively, the holder body portion 9 forming the wedge countering surface 9 or the auxiliary wedge countering surface 9 may comprise low friction material. When the clamp 1 comprises an auxiliary wedge 17, at least part of one or both of the auxiliary wedging surface 18 and the auxiliary wedge countering surface 9’ may comprise or consist of low friction material. An example of low friction material is composite material, for example comprising woven fibres impregnated with polyester resins — commercially available under the name
Teclite. Other examples of low friction materials are bronze, plastics such as thermoplastics, for example PTFE or Nylon, or any other material with a low coefficient of friction. Instead of or in addition to using low friction materials, one or more friction reducing intermediate structures may be used.
Similarly, in embodiments, the holder 2 may comprise a holder body portion 14 comprising different material than parts of the holder 2 providing the rope supporting surface 8 and/or the wedge countering surface 9 or auxiliary wedge countering surface 9’.
Figure 4A shows a side view of an alternative embodiment of a wire rope clamp 1, comprising a holder 2. In Figure 4A, dashed section lines generally indicate components inside the holder 2. Contrary to the embodiment of Figures 1A and 1B, in this particular embodiment of the wire rope clamp 1, the rope wedge 5 directly contacts the holder body portion 14. In particular, the wedging surface 7 of the rope wedge 5 directly contacts the wedge countering surface 9 of the holder 2. In this embodiment, the boundaries of the wedge channel 4 are formed by the countering surface 9 of the holder 2 and the rope supporting surface 8 of the holder 2.
As such, in particular when a tensioning force is exerted on the wire rope section 11, the wire rope section 11 is clamped between the holder 2 and the rope wedge 5, and the rope wedge 5 is directly clamped between the wire rope section 11 and the holder 2, in particular the wedge countering surface 9 on the holder body portion 14 of the holder 2.
Compared to the embodiment shown in Figures 1A and 1B, not using an auxiliary wedge may provide for a simpler design, which may be easier to assemble.
The amount of friction with which the rope clamping surface 6 of the rope wedge 5 engages the rope section 11 is preferably higher than the amount of friction with which the wedging surface 7 of the rope wedge 5 engages the wedge countering surface 9 of the holder 2. As such, in use, initially as the wire rope section 11 is tensioned, the rope wedge 5 slips for a longer time relative to the wedge countering surface 9 than the rope wedge slips relative to the rope section 11. This may reduce the risk of the wire rope section 11 being pulled out of the clamp 1 while tensioned.
To lower the amount of friction between the wedging surface 7 of the rope wedge 5 and the wedge countering surface 9, a slide bearing structure 12 is provided. While the slide bearing structure 12 is in the embodiment of Figure 4A is provided on a body portion 13 of the rope wedge 5, the slide bearing structure 12 may be additionally or alternatively positioned on the holder 2. As such, the wedging surface 7 and/or the wedge countering surface 9 may be provided as a bearing surface of a slide bearing structure 12. Preferably, the bearing surface comprises at least one of a plastics material, preferably PTFE or Nylon, a composite material, bronze or cast iron, or in general any other material which provides a low coefficient of friction in combination with the material of the surface against which the bearing surface is pressed, in combination with being sufficiently pressure resistant.
Figure 4B shows in side view of yet another alternative embodiment of a wire rope clamp 1, comprising a holder 2. In Figure 4B, dashed section lines show components inside the holder 2. In the embodiment of Figure 4B, a set of cylindrically shaped rollers 15 rotationally mounted on a roller frame 21 are provided. The roller frame 21 is connected to the rope wedge 5, and faces away from the rope clamping surface 6. Alternatively, the roller frame 21 may be connected to the auxiliary wedge 17 facing towards the rope wedge 5. As an even further alternative, the wire rope clamp 1 of Figure 4B does not comprise an auxiliary wedge, and the rollers 15 may be rotationally connected to the holder 2, and may as such provide the wedge countering surface 9. The rollers 15 are an example of a friction reducing intermediate structure.
The rollers 15 may be rotationally connected to the roller frame 21 or even directly to the rope wedge 5 via bearings, such as plain bearings or roller bearings capable of withstanding a compressive load. The rollers 15 provide for a low amount of friction between the rope wedge 5 and the auxiliary wedge 17, which low amount of friction allows the rope wedge 5 to move towards the opening 3 when the clamping is initialised. Preferably, the rollers 15 comprise a hardened steel.
Another example of a friction reducing intermediate structure is a plate of a low friction material, which plate provides the wedging surface 7 or the wedge countering surface 9. In embodiments, two bearing plates may be used as a friction reducing intermediate structure, wherein the plates provide each one of the wedging surface 7 and the wedge countering surface 9, and low coefficient of friction between the wedging surface 7 and the wedge countering surface 9.
Figures 5A and 5B show another embodiment of a rope clamp 1, respectively in an isometric view and a section view. Figure 5C shows a detailed section view of a particular embodiment of a rope wedge 5, which rope wedge 5 is comprised by the rope clamp 1 of figures 5A and 5B.
The rope wedge 5 best depicted in figures 5B and 5C comprises a rope wedge passage 28 through which the rope 11 can extend. The rope wedge passage 28 may be formed by a rear section 27 of the rope wedge 5.
The rear section 27 is in use oriented away from the rope entrance opening 3 and/or the rope wedge channel 4. In use, the rope wedge passage 28 may be oriented at an angle relative to the rope wedge channel 4 and/or at an angle 6 relative to the to the rope clamping surface 6, in particular an angle between 5 and 60 degrees, or between 15 and 50 degrees, or even between 30 and 45 degrees. As such, part of the rope 11 may be curved or bent corresponding to the angle between the rope wedge passage 28 and the rope wedge channel 4 — as can be seen in Fig. 5B. The rope wedge passage 28 may be fully surrounded by the rear section 27 of the rope wedge 5, or only partially surrounded by the rear section 27 of the rope wedge 5.
When the rope 11 passes through the rope wedge passage 28, and the rope 11 is pulled in the tensioning direction 25, the bend or curve in the rope 11 may aid the rope 11 in pulling the rope wedge 5 towards the rope entrance opening 3, or more in general, in the tensioning direction 25. A method of clamping a wire rope clamp 1 onto a wire rope 11 may hence comprise a step of inserting the rope, in particular a free end of the rope, through the optional rope wedge passage 28 of the rope wedge 5 and bending the rope relative to the rope clamping surface 6, in particular prior to the rope being retracted.
The D-shackle 50 depicted in Figs. 5A and 5B is optional, and embodiments of the rope clamp 1 are envisioned without said D-shackle 50.
In such embodiments, the eye 51 in the auxiliary wedge 17 at which the D- shackle is connected may not be required and may thus be omitted. Also the further D-shackles 52, 53 are optional and may be omitted.
Fig. 6A shows a rear view, and Fig. 6B shows a partial side view, of a rope wedge 5 which can be used in any rope clamp disclosed herein, for example but not limited to the rope clamps depicted in Figs. 1A, 1B, 4A, 4B, and 5A-5C. Figs. 6A and 6B also show a rope section 11. The rope wedge 5 comprises a wedge body portion 13 and a slide bearing structure 12, and provides a rope clamping surface 6.
The rope wedge 5 of Figs. 6A and 6B comprises a restriction member 60, positioned at a rear end 61 of the rope wedge 5 and generally connected to a rear section 63 of the body portion 13. It will be appreciated that in use the rope wedge 5 will be inserted into the holder 2 with a front end first. Any connection element 66 may be used to connect the restriction member 60 to the body portion 13. In alternative embodiments, the restriction member 60 is formed by the rope wedge 5 itself.
In the example of Figs. 6A and 6B, the connection element 66 allows the passage 65 to be moved relative to rear section 63. This is for example achieved when a threaded connection is formed between the connection element 66 and the rear section 63. In use, the wire rope 11 may be passed through the passage 65, and the passage 65 can subsequently be moved towards the rear section 63 to bend the wire rope.
The restriction member 60 is in general used to couple the rope 11 to the rope wedge 5, in order to allow the rope 11 to be bent relative to the wedge body portion 13, preferably towards the rope clamping surface 6. The example of the restriction member 60 depicted in Figs. 6A and 6B comprises a restriction body 64 defining a passage 65 for accommodating part of the wire rope 11. Although Fig. 6A shows the passage 65 fully encircled by the restriction body 64, this is not essential. Instead, it is sufficient if the restriction body 64 can sufficiently restrict movement between the wire rope 11 and the wedge body portion 13 to allow the wire rope 11 to be bent towards the wedge body portion 13. For example, it may be sufficient if part of the wire rope 11 is positioned between the rear section 63 of the body portion 13 and the restriction body 64.
From Fig. 6A, it will be appreciated that it is envisioned, but not essential, that an inner diameter Di of the passage 65 is larger than an outer diameter Do of the wire rope 11. This may allow for easy insertion of the wire rope 11 into the passage 65, and through the restriction body 64.
When the wire rope 11 is bent towards the wedge body portion 13, the angle ¢ is reduced. For example, the angle £¢ may be reduced from an angle between 20 and 40 degrees, for example approximately 30 degrees, to an angle of approximately 0 degrees.
Figs. 7A, 7B, and 7C show yet another embodiment of a rope clamp 1, respectively in a front view, section view over line A-A indicated in Fig. 7A, and an isometric view. The rope clamp 1 comprises a holder 2 with a rope entrance opening 3 for receiving a rope and a rope wedge channel 4.
The holder 2 is provided with a rope supporting surface 8. Preferably, the holder 2 is a rigid body which is continuous around the wedge channel, as is preferred for any holder disclosed herein.
In the rope wedge channel 4, a rope wedge 5 is positioned, which may be any rope wedge disclosed herein, for example in conjunction with
Fig. 5C. The rope wedge is not visible in the view of Fig. 5B. The rope wedge comprises a rope clamping surface 6 and a wedging surface 7, which 5 wedging surface 7 faces away from the rope clamping surface 6 and extends relative to the rope clamping surface 6 at a rope wedging angle a, which angle is for example indicated in Fig. 5C.
A wire rope 11 is clamped between the rope clamping surface 6 and a rope supporting surface 8 of the holder 2. For example, the wire rope may have a diameter of at least 10mm, at least 20 mm, at least 25 mm, or even 40 mm or more or even 60 mm or more. The wire rope 11 is engaged only from one side by wedges.
The rope clamp 1 further comprises a releasable auxiliary wedge 17 positioned in the rope wedge channel 4. The countering surface 9 is provided on the auxiliary wedge 17, which auxiliary wedge is in use positioned between the rope wedge 5 and an auxiliary wedge countering surface 9’ of the holder 2. As a preference, the auxiliary wedge 17 comprises an auxiliary wedging surface 18 that extends along the auxiliary wedge countering surface 9’ of the holder 2. In use, the auxiliary wedging surface 18 cooperates with the auxiliary wedge countering surface 9’. In particular, the auxiliary wedging surface 18 faces away from the wedge countering surface 9 and extends at an auxiliary wedging angle (B — indicated in Fig. 1B) relative to the wedge countering surface 9. In general, the rope wedge 5 and the auxiliary wedge 17 are tapered generally in the same direction, in particular towards the rope entrance opening 3 in the holder.
In conjunction with the rope clamp 1 of Figs. 5A and 5B, it is envisioned that the auxiliary wedge 17 is releasably fixated to the holder 2 using one or more fixation members, such as bolts 71 or pens. The fixation may be required to prevent the auxiliary wedge 17 from being forced out of the wedge channel 4 in a direction opposite to the tensioning direction 25,
when the rope 11 is pulled in the tensioning direction 25. The auxihary wedge is thus preferably fixated to the holder in a direction essentially parallel to the auxiliary wedging surface 18.
A tension force F on the rope 11 is indicated in Fig. 7B, as well as the resulting force F’ on the auxiliary wedge 17 as a result from the tension force F. The one or more fixation members, such as bolts 71 or pens, are an example of a releasable securing structure with which the auxiliary wedge 17 can be secured to the holder 2.
It has been observed in conjunction with the embodiment of the rope clamp 1 of Figs. 5A and 5B that it may be difficult to remove the bolts 71 after the wire rope clamp 1 has been used — i.e. after the wire rope 11 has been tensioned in the direction 25 away from the holder 2. The tension force on the wire rope 11 can be transferred through the bolts 71, which in turn may cause deformation and/or dislocation of the bolts 71, resulting in the bolts 71 being harder to remove.
According to the embodiment of Figs. 7A-7C, it is envisioned that the clamp 1 comprises a coupling body 70 coupling the auxiliary wedge 17 to the holder 2. By virtue of the coupling body 70, the force F’ which in use forces the auxiliary wedge 17 out of the rope wedge channel can be transferred to the holder 2, in particular the part 2’ of the holder 2 forming the auxiliary wedge countering surface 9’. As a result, movement of the auxiliary wedge 17 relative to the holder 2 due to the force F’ can be prevented. Thus, the coupling body 70 preferably couples the auxiliary wedge 17 to the holder 2 at least in a direction essentially parallel to the auxiliary wedging surface 18. As depicted in Figs. 7A-7C, the coupling body 70 can be partially positioned in a pocket 72 into the holder 2 and the coupling body 70 can extend through the auxiliary wedge countering surface 9.
To couple the auxiliary wedge 17 to the holder 2, the coupling body 70 can extend through the holder 2 and into the auxiliary wedge 17. For example, a first pocket 72 can be formed through the holder 2 in which a first part of the coupling body 70 can be positioned, and a second pocket 73 can be formed into the auxiliary wedge 17 in which a second part of the coupling body 70 can be positioned. In particular, the first pocket 72 extends through the auxiliary wedge countering surface 9’ of the holder 2, and the second pocket 73 is formed in the auxiliary wedging surface 18 of the auxiliary wedge 17. The second pocket 73 may be at least partially threaded to allow a threaded connection of a fixation member 71, such as a bolt, into the second pocket 73.
A fixation member, such as a bolt 71, may thus be used to connect the coupling body 70 to the auxiliary wedge 17, for example to prevent the coupling body 70 from being accidentally released. Because a through hole through the coupling body 70 through which the bolt 71 passes is surrounded by the coupling body 70, it can be prevented that the bolt 71 is subjected to the force F'. This in turn may prevent the bolt 71 from deforming in use, which would make it harder to release the bolt 71.
As depicted in Fig. 7A and 7C, it is envisioned that the coupling body 70 partially extends beyond the holder 2, in particular in a direction substantially perpendicular to the wedge channel 4. Additionally or alternatively, the coupling body 70 may partially extend beyond the holder 2 in a direction generally away from the rope wedge channel 4.
The part of the coupling body 70 extending beyond the holder 2 may be impacted to release the coupling body 70 from the holder 2, after the optional bolt 71 has been removed. It has been observed that in use, the coupling body 70 may be deformed after the use of the wire rope clamp 1, considering the potentially high force F’ forcing the auxiliary wedge 17 out of the holder 2. The deformation of the coupling body 70 may make it harder to release the coupling body 70 from the holder 2, and impacting the coupling body 70 may be beneficial to release the coupling body 70 from the holder 2. Alternatively, for any coupling body 70, essentially no part of the coupling body 70 extends beyond the holder 2. In such cases, the coupling body 70 may still be impacted to be released from the holder 2, for example using a tool shaped to enter the pocket 72.
It will be appreciated that the coupling body 70 and one or more related features may be readily applied to any other wire rope clamp comprising an auxiliary wedge disclosed herein, and also to any method of clamping a wire rope clamp onto a wire rope and any method for unclamping a wire rope clamp. Similarly, any feature and option, for example but not limited to the locking plate 24 and/or D-shackle 50 and/or rope wedge passage 28, disclosed in conjunction with the other wire rope clamps and method disclosed herein are readily applicable to the wire rope clamp of Figures 7A-7C.
A method of clamping the wire rope clamp 1 of Figs. 7A-7C onto a wire rope 11 is envisioned. In the method, a section of the rope 11, in particular a free end of the rope, is inserted through the rope entrance opening 3 of the holder 2 of the rope clamp 1 into the rope wedge channel 4 so that a section of the rope extends through the interspace 10 between the rope clamping surface 6 of the rope wedge 5 and the rope supporting surface 8 of the holder 2. The method further comprises positioning an auxiliary wedge 17 providing the countering surface 9 between the rope wedge 5 and an auxiliary wedge countering surface 9’ of the holder 2, and retracting the rope 11 in a direction away from the holder. When retracting the rope 11, the rope engages the rope wedge 5 via the rope clamping surface 6 and entrains the rope wedge 5 so that the wedging surface 7 of the rope clamp 5 is pulled into engagement with the wedge countering surface 9 of the auxiliary wedge 17 and the auxiliary wedging surface 18 of the auxiliary wedge 17 engages the auxiliary wedge countering surface 9’ of the holder 2.
The rope clamping surface 6 of the rope wedge 5 clamps the section of the rope onto the rope supporting surface 8 of the holder 2.
In the method, the auxiliary wedge 17 is coupled to the holder using a releasable coupling body 70. Optionally, the method further comprises connecting the coupling body 70 to the auxiliary wedge 17 using a fixation member 71, such as a bolt.
In a method for unclamping the wire rope clamp 1 of Figs. 7A-7C from the wire rope 11, the coupling body 70 is released prior to releasing the clamped connected between the auxiliary wedge, the holder, and the rope wedge.
To release the auxiliary wedge 17, it is envisioned that — as also disclosed in conjunction with Fig. 1B - part 17 of the auxiliary wedge 17 protrudes out of the rope entrance opening 3 of the holder 2. The auxiliary wedge 17, in particular the protruding part 17, may be impacted, in particular using a force directed generally towards the rope wedge channel 4 and/or towards the rope wedge 5. Additionally or alternatively to impacting the auxiliary wedge 17, any other force such as a pushing force may be used to move the auxiliary wedge 17 out of the rope wedge channel 4 in a direction away from the rope entrance opening 3.
Additionally or alternatively to impacting the auxiliary wedge 17 at or near the rope entrance 3, to release the auxiliary wedge 17 in any method of unclamping a wire rope clamp 1 comprising an auxiliary wedge 17, the auxiliary wedge 17 may be pulled out of the rope wedge channel 4 in a direction generally away from the rope entrance opening 3 of the holder. A
D-shackle as for example depicted in Figs. 5A-5B may be used to provide a connection point on which the pulling force may be exerted.
As a particular option depicted in Figs. 7B-7C, but also optionally applicable to any other auxiliary wedge 17 disclosed herein, a pocket 77 may be formed in the auxiliary wedge 17, in particular at a rear end of the auxiliary wedge 17. In the assembled state of the rope clamp 1 with the auxiliary wedge 17 positioned partially in the rope wedge channel 4, the pocket 77 may be positioned outside the rope wedge channel 4, in particular outside the housing 2. The pocket 77 may be shaped as at least part of a cylinder. A lever device may be at partially positioned inside the pocket 77, and using the lever device, the auxiliary wedge 17 may be forced out of the rope wedge channel 4 — optionally after removing the optional coupling body 70. While part of the lever device is positioned in the pocket 77, the lever device may be rotated about a rotation axis R which passes through the pocket 77 and is oriented substantially perpendicular to an elongation direction of the wire rope 11. An example of rotation axis R is schematically indicated in Fig. 7C. A surface of the lever device which is eccentric relative to the rotation axis R can be forced against the holder 2, and by rotating the lever device relative to the holder 2, a mechanical advantage using lever can help with removing the auxiliary wedge 17 from the holder 2. The lever device may be subjected to a constant load and/or an impact force. More in general, it is envisioned that a lever action may be used to remove the auxiliary wedge 17 from the housing 2.
As an even further option contemplated in the present disclosure, applicable to any auxiliary wedge, a wedging action may be used to remove the auxiliary wedge 17 from the housing 2. For example, a slot may be formed in the auxiliary wedge 17, in particular in a rear end 79 of the auxiliary wedge 17 which extends out of the housing 2 and is as such accessible when a wire rope 11 is clamped in the rope clamp 1. A wedge may be driven into the slot, and when the wedge while driven into the slot engages the holder 2, the wedge may be used to force the auxiliary wedge 17 away from the holder 2, out of the rope wedge channel 4. The slot is in particular oriented approximately perpendicular to an elongation direction of the wire rope 11, and the wedge is moved in a direction approximately perpendicular to an elongation direction of the wire rope 11.
It will be appreciated that for any rope clamp 1 comprising an auxiliary wedge 17, the auxiliary wedge 17 may extend out of the holder 2 at a rear end 79 of the auxiliary wedge 17 and/or at or near the rope entrance opening 3 to facilitate removal of the auxiliary wedge 17. In any method of unclamping a wire rope clamp 1 comprising an auxiliary wedge 17, a mechanical advantage such as a wedge and/or lever may be used.
It is noted that the figures are only schematic representations that are given by way of non-limited examples. In the figures, the same or corresponding parts are designated with the same reference numerals.
Many variations will be apparent to the skilled person in the art.
For example, embodiments of wire rope clamps are envisioned with or without the auxiliary wedge, and optionally with any embodiment of the slide bearing structure and/or friction reducing intermediate structure.
Such variations are understood to be comprised within the scope of the invention defined in the appended claims.
LIST OF REFERENCE NUMERALS
1. Rope clamp 2. Holder 3. Rope entrance opening 4. Rope wedge channel 5. Rope wedge 6. Rope clamping surface 7. Wedging surface 8. Rope supporting surface 9. Wedge countering surface 10. Interspace 11. Rope section 12. Slide bearing structure 13. Rope wedge body portion 14. Holder body portion 15. Roller 16. Profile 17. Auxiliary wedge 18. Auxiliary wedging surface 20. Auxiliary clamp (not shown) 21. Roller frame 22. Groove 23. Releasable securing structure 24. Locking plate 25. Tensioning direction 26. Connection eye 27.Rear section of the rope wedge 28. Rope wedge passage 50.D-shackle
51.Eye 52.D-shackle 53.D-shackle 60.Restriction member 61.Rear end 63.Rear section 64 Restriction body 65.Passage 66.Connection element 70.Coupling body 71.Bolt 72 First pocket 73.Second pocket 9’. Auxiliary wedge countering surface a Rope wedging angle
B Auxiliary wedging angle h Gap height
Ô Angle relative to the to the rope clamping surface & Angle between wire rope and wedge body portion
Di Inner diameter
Do Outer diameter

Claims (1)

ConclusiesConclusions 1. Draadkabelklem (1) voor klemmen van een draadkabel, omvattende: - een houder (2) welke is voorzien van een kabelopening (3) voor ontvangen van een kabel en verder is voorzien van een kabelklemkanaal (4); - een kabelwig (5) opgesteld in het kabelklemkanaal (4), de kabelwig (5) omvattende een kabelklemoppervlak (6) en een wigoppervlak (7), waarin het wigoppervlak (7) weg is gekeerd van het kabelklemoppervlak (6) en zich uitstrekt onder een kabelwighoek (a) ten opzichte van het kabelklemoppervlak (6), de houder (2) zijnde verder voorzien van een kabelondersteuningsoppervlak (8) en met een wig-tegenoppervlak (9); waarin het kabelondersteuningsoppervlak (8) van de houder (2) welke zich langs het kabelklemoppervlak (6) van de kabelwig (5) wtstrekt om een tussenruimte (10) daartussen te vormen waarin in gebruik een kabeldeel (11), in het bijzonder een uiteinde van een kabel, zich wtstrekt welke uitsteekt door de kabelopening (3) het kabelwigkanaal (4) van de houder (2) in, waarin het wig-tegenoppervlak (9) van de houder (2) zich wtstrekt langs het wigoppervlak (7) van de kabelwig (5) om in gebruik samen te werken met het wigoppervlak (7) van de kabelwig (5), waarm het kabelklemoppervlak (6) van de kabelwig (5) is ingericht om op wrijving het kabeldeel (11) aan te grijpen met een eerste hoeveelheid wrijving, en waarin het wigoppervlak (7) van de kabelwig (5) is mgericht om op wrijving het wig-tegenoppervlak (9) aan te grijpen met een tweede hoeveelheid wrijving, de tweede hoeveelheid wrijving zijnde lager dan de eerste hoeveelheid wrijving.1. A wire rope clamp (1) for clamping a wire rope, comprising: - a holder (2) provided with a cable opening (3) for receiving a cable and further provided with a cable clamp channel (4); - a cable wedge (5) disposed in the cable clamp channel (4), the cable wedge (5) comprising a cable clamping surface (6) and a wedge surface (7), wherein the wedge surface (7) faces away from the cable clamping surface (6) and extends at a cable wedge angle (α) relative to the cable clamping surface (6), the holder (2) further comprising a cable supporting surface (8) and a wedge counter surface (9); wherein the cable supporting surface (8) of the holder (2) extends along the cable clamping surface (6) of the cable wedge (5) to form a gap (10) therebetween in which, in use, a cable portion (11), in particular a cable end, extends and projects through the cable opening (3) into the cable wedge channel (4) of the holder (2), wherein the wedge counter surface (9) of the holder (2) extends along the wedge surface (7) of the cable wedge (5) to cooperate, in use, with the wedge surface (7) of the cable wedge (5), wherein the cable clamping surface (6) of the cable wedge (5) is adapted to frictionally engage the cable portion (11) with a first amount of friction, and wherein the wedge surface (7) of the cable wedge (5) is adapted to frictionally engage the wedge counter surface (9) with a second amount of friction, the second amount of friction being lower than the first amount of friction. 2. Draadkabelklem (1) volgens conclusie 1, waarin de kabelwighoek (a) waarmee het wigoppervlak (7) zich uitstrekt ten opzichte van het kabelklemoppervlak (6) tussen 3° en 9° 1s, en bij voorkeur 7° is.A wire rope clamp (1) according to claim 1, wherein the rope wedge angle (α) at which the wedge surface (7) extends relative to the rope clamp surface (6) is between 3° and 9° 1s, and preferably 7°. 3. Draadkabelklem (1) volgens conclusie 1 of 2, waarin het wigoppervlak (7) en/of het wig-tegenoppervlak (9) voorzien is als een lageroppervlak van een glijlagerstructuur (12).Wire rope clamp (1) according to claim 1 or 2, wherein the wedge surface (7) and/or the wedge counter surface (9) is provided as a bearing surface of a sliding bearing structure (12). 4. Draadkabelklem (1) volgens conclusie 3, waarin de glijlagerstructuur (12) is voorzien op een lichaamsdeel (13) van de kabelklemA wire rope clamp (1) according to claim 3, wherein the sliding bearing structure (12) is provided on a body portion (13) of the wire rope clamp (5).(5). 5. Draadkabelklem (1) volgens conclusie 3 of 4, waarin de glijlagerstructuur (12) ten minste een van een plastic, bij voorkeur PTFE of Nylon, een composiet materiaal, brons, of gietijzer omvat.5. A wire rope clamp (1) according to claim 3 or 4, wherein the sliding bearing structure (12) comprises at least one of a plastic, preferably PTFE or Nylon, a composite material, bronze, or cast iron. 6. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin een lichaamsdeel (13) van de kabelwig (5) hoge sterkte staal omvat of daaruit bestaat, bij voorkeur S690.Wire rope clamp (1) according to any one of the preceding claims, wherein a body part (13) of the rope wedge (5) comprises or consists of high strength steel, preferably S690. 7. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin een lichaamsdeel (14) van de houder zacht staal omvat of daaruit bestaat, bij voorkeur S355.A wire rope clamp (1) according to any preceding claim, wherein a body portion (14) of the holder comprises or consists of mild steel, preferably S355. 8. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin het wigoppervlak (7) en het wig-tegenoppervlak (9) samenwerken via een wrijvingsreductietussenstructuur, bij voorkeur een lagerplaat of een rollenset (15).8. Wire rope clamp (1) according to any of the preceding claims, wherein the wedge surface (7) and the wedge counter surface (9) cooperate via a friction reducing intermediate structure, preferably a bearing plate or a roller set (15). 9. Draadkabelklem (1) volgens een van de conclusies 1-8, waarin het klemoppervlak (6) van de kabelwig (5) voorzien is van een groef (22) welke in gebruik een deel van een manteloppervlak van het kabeldeel (11) ontvangt.A wire rope clamp (1) according to any one of claims 1 to 8, wherein the clamping surface (6) of the rope wedge (5) is provided with a groove (22) which, in use, receives a portion of a sheath surface of the rope section (11). 10. Draadkabelklem volgens conclusie 9, waarin een oppervlak van de groef voorzien is met een profiel (16) om in gebruik het manteloppervlak van het kabeldeel (11) aan te grijpen.A wire rope clamp according to claim 9, wherein a surface of the groove is provided with a profile (16) for engaging the jacket surface of the rope section (11) in use. 11. Draadkabelklem volgens een van de conclusies 1-10, waarin het kabelondersteuningsoppervlak (8) glad is ten opzichte van het klemoppervlak (6) om slip te faciliteren van de kabel ten opzichte van het kabelondersteunmgsoppervlak (8) terwijl de kabel het wigoppervlak (7) in aangrijping trekt met het weg-tegenoppervlak (9).A wire rope clamp as claimed in any one of claims 1 to 10, wherein the rope supporting surface (8) is smooth relative to the clamping surface (6) to facilitate slippage of the rope relative to the rope supporting surface (8) as the rope pulls the wedge surface (7) into engagement with the road counter surface (9). 12. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin het weg-tegenoppervlak (9) voorzien is op een oppervlak van de houder (2).A wire rope clamp (1) according to any preceding claim, wherein the road-facing surface (9) is provided on a surface of the holder (2). 18. Draadkabelklem (1) volgens een van de voorgaande conclusies 1- 11, waarin de houder (2) een losmaakbare hulpwig (17) omvat, en het tegenoppervlak (9) voorzien is op de hulpwig (17), welke hulpwig opgesteld is tussen de kabelwig (5) en een hulpwigtegenoppervlak (9°) van de houder (2).Wire rope clamp (1) according to any of the preceding claims 1-11, wherein the holder (2) comprises a releasable auxiliary wedge (17), and the counter surface (9) is provided on the auxiliary wedge (17), which auxiliary wedge is disposed between the cable wedge (5) and an auxiliary wedge counter surface (9°) of the holder (2). 14. Draadkabelklem (1) volgens conclusie 13, waarin de hulpwig (17) een hulpwigoppervlak (18) omvat welke zich wtstrekt langs het hulpwigtegenoppervlak (9°) van de houder (2) om in gebruik samen te werken met dit hupwigtegenoppervlak (9% van de houder (2).A wire rope clamp (1) as claimed in claim 13, wherein the auxiliary wedge (17) comprises an auxiliary wedge surface (18) extending along the auxiliary wedge counter surface (9°) of the holder (2) for cooperating with said auxiliary wedge counter surface (9°) of the holder (2) in use. 15. Draadkabelklem (1) volgens conclusie 13 of 14, waarm het hulpwigoppervlak (18) weg gekeerd is van het wigtegenoppervlak (9) en onder een hulpwighoek (B) uitstrekt ten opzichte van het wigtegenoppervlak (9).A wire rope clamp (1) according to claim 13 or 14, wherein the auxiliary wedge surface (18) faces away from the wedge counter surface (9) and extends at an auxiliary wedge angle (B) relative to the wedge counter surface (9). 16. Draadkabelklem (1) volgens conclusie 15, waarin de hulpwighoek (B) waaronder het hulpwigoppervlak (18) uitstrekt ten opzichte van het wigtegenoppervlak (9) tussen 7° en 20° 1s, en bij voorkeur 12° is.A wire rope clamp (1) according to claim 15, wherein the auxiliary wedge angle (B) at which the auxiliary wedge surface (18) extends relative to the wedge counter surface (9) is between 7° and 20° 1s, and preferably 12°. 17. Draadkabelklem (1) volgens een van de conclusies 13-16, waarin de kabelwig (5) en de hulpwig (17) beide ten minste deels taps toelopen richting de kabelopening (3).17. Wire rope clamp (1) according to any of claims 13 to 16, wherein the rope wedge (5) and the auxiliary wedge (17) both at least partially taper towards the rope opening (3). 18. Draadkabelklem (1) volgens een van de conclusies 13-17, waarin deel (17°) van de hulpwig (17) uit de kabelingangsopening (3) van de houder (2) steekt.Wire rope clamp (1) according to any one of claims 13 to 17, wherein part (17°) of the auxiliary wedge (17) projects from the cable entry opening (3) of the holder (2). 19. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin de kabelwig (5) en/of de hulpwig (17) vastgezet is aan de houder (2) via een losmaakbare vastzetstructuur (23).19. Wire rope clamp (1) according to any of the preceding claims, wherein the rope wedge (5) and/or the auxiliary wedge (17) is secured to the holder (2) via a releasable securing structure (23). 20. Draadkabelklem (1) volgens een van de voorgaande conclusies, waarin de kabelwig (5) een kabelwigpassage (28) omvat door welke ten minste deel van het kabeldeel (11) kan uitstrekken, welke kabelwigpassage onder een hoek (6) is georiënteerd ten opzichte van het kabelklemoppervlak (6), in het bijzonder een hoek tussen 5° en 60°.Wire rope clamp (1) according to any of the preceding claims, wherein the rope wedge (5) comprises a rope wedge passage (28) through which at least part of the rope section (11) can extend, which rope wedge passage is oriented at an angle (θ) with respect to the rope clamp surface (6), in particular an angle between 5° and 60°. 21. Draadkabelklem (1) volgens een van de voorgaande conclusies, voor zover afhankelijk van conclusie 13, verder omvattende een koppelingsdeel (70) welke de hulpwig (17) koppelt met de houder (2).21. A wire rope clamp (1) according to any preceding claim, when dependent on claim 13, further comprising a coupling member (70) coupling the auxiliary wedge (17) to the holder (2). 22. Draadkabelklem (1) volgens conclusie 21, waarm het koppellichaam (70) zich uitstrekt door de houder (2) en de hulpwig (17) in.22. A wire rope clamp (1) as claimed in claim 21, wherein the coupling body (70) extends through the holder (2) and into the auxiliary wedge (17). 23. Draadkabelklem (1) volgens een van de conclusies 21-22, waarin het koppellichaam (70) verbonden is met de hulpwig door een fixatiedeel (71), zoals een bout.Wire rope clamp (1) according to any of claims 21 to 22, wherein the coupling body (70) is connected to the auxiliary wedge by a fixing part (71), such as a bolt. 24. Draadkabelklem (1) volgens een van de conclusies 21-23, waarin het koppellichaam (70) zich uitstrekt door het hulpwigtegenoppervlak (9°) van de houder (2).24. A wire rope clamp (1) according to any one of claims 21 to 23, wherein the coupling body (70) extends through the auxiliary wedge counter surface (9°) of the holder (2). 25. Draadkabelklem (1) volgens een van de conclusies 21-24, waarin het koppellichaam (70) ten minste deels uitsteekt buiten de houder in een richting in hoofdzaak weg van het kabelklemkanaal (4).A wire rope clamp (1) as claimed in any one of claims 21 to 24, wherein the coupling body (70) at least partially extends beyond the holder in a direction substantially away from the wire rope clamp channel (4). 26. Draadkabel omvattende een draadkabelklem (1) volgens een van de voorgaande conclusies, waarin een kabeldeel (11), in het bijzonder een uiteinde van de kabel, zoals een recht uiteinde van de kabel, door de kabelopening (3) steekt het kabelwigkanaal (4) van de houder (2) in en is geklemd in de tussenruimte tussen het kabelwigoppervlak (7) van de kabelwig (5) en het kabelsteunoppervlak (8) van de houder (2) en waarin het kabelklemoppervlak (6) van de kabelwig (5) op wrijving het kabeldeel (11) aangrijpt met een eerste hoeveelheid wrijving, en waarin het wigoppervlak (7) van de kabelwig (5) is ingericht om op wrijving het wig-tegenoppervlak (9) aan te grijpen met een tweede hoeveelheid wrijving, de tweede hoeveelheid wrijving zijnde lager dan de eerste hoeveelheid wrijving.26. Wire rope comprising a wire rope clamp (1) according to any of the preceding claims, wherein a rope part (11), in particular an end of the rope, such as a straight end of the rope, extends through the rope opening (3) into the rope wedge channel (4) of the holder (2) and is clamped in the gap between the rope wedge surface (7) of the rope wedge (5) and the rope support surface (8) of the holder (2) and wherein the rope clamping surface (6) of the rope wedge (5) frictionally engages the rope part (11) with a first amount of friction, and wherein the wedge surface (7) of the rope wedge (5) is arranged to frictionally engage the wedge counter surface (9) with a second amount of friction, the second amount of friction being lower than the first amount of friction. 27. Draadkabel volgens conclusie 26, waarin een deel van het kabeldeel welke zich uitstrekt voorbij de kabelwig (5) voorzien is met een hulpklem om de kabelwig (5) op te sluiten en om het kabeldeel in aangrijping te trekken wanneer de kabel door de kabelingangsopening (3) wordt teruggetrokken.27. A wire rope as claimed in claim 26, wherein a portion of the rope section extending beyond the rope wedge (5) is provided with an auxiliary clamp for retaining the rope wedge (5) and for pulling the rope section into engagement as the rope is withdrawn through the rope entry opening (3). 28. Draadkabel volgens een van de conclusies 26-27, waarin een deel van de kabel welke uitstrekt door de kabelwig of door het kabelwigkanaal gebogen is, in het bijzonder onder een hoek ten opzichte van het kabelklemoppervlak (6).28. Wire rope according to any of claims 26 to 27, wherein a portion of the rope extending through the rope wedge or through the rope wedge channel is bent, in particular at an angle relative to the rope clamp surface (6). 29. Werkwijze voor klemmen van een draadkabelklem (1) op een draadkabel gebruik makend van een draadkabelklem (1) volgens een van de conclusies 1-25, waarin een deel van de kabel, in het bijzonder een uiteinde van de kabel, door de kabelingangsopening (3) van de houder (2) van de kabelklem (1) is gestoken in het kabelwigkanaal (4) zodanig dat een deel van de kabel zich uitstrekt door de tussenruimte (10) tussen het kabelklemoppervlak (6) van de kabelwig (5) en het kabelondersteunmgsoppervlak (8) van de houder (2), en waarin de kabel teruggetrokken wordt zodanig dat de kabel de kabelwig (5) aangrijpt via het kabelklemoppervlak (6) en de kabelwig (5) zodanig opsluit dat het klemoppervlak (7) van de kabelklem in aangrijping wordt getrokken met het kabeltegenoppervlak (9) en het kabelklemoppervlak (6) van de kabelwig (5) het kabel deel op het kabelondersteuningsoppervlak (8) van de houder (2) klemt.29. Method for clamping a wire rope clamp (1) onto a wire rope using a wire rope clamp (1) according to any one of claims 1 to 25, wherein a portion of the rope, in particular an end of the rope, is inserted through the cable entry opening (3) of the holder (2) of the wire rope clamp (1) into the wire rope wedge channel (4) such that a portion of the rope extends through the gap (10) between the wire rope clamping surface (6) of the wire rope wedge (5) and the wire rope supporting surface (8) of the holder (2), and wherein the rope is retracted such that the rope engages the wire rope wedge (5) via the wire rope clamping surface (6) and retains the wire rope wedge (5) such that the clamping surface (7) of the wire rope clamp is drawn into engagement with the wire rope counter surface (9) and the wire rope clamping surface (6) of the wire rope wedge (5) retains the wire rope portion on the wire rope supporting surface (8) of the holder (2) is clamping. 30. Werkwijze volgens conclusie 29, verder omvattende de kabel door een kabelwigpassage (28) van de kabelwig (5) steken en buigen van de kabel ten opzichte van het kabelklemoppervlak (6), in het bijzonder voordat de kabel wordt teruggetrokken.30. A method according to claim 29, further comprising inserting the cable through a cable wedge passage (28) of the cable wedge (5) and bending the cable relative to the cable clamp surface (6), in particular before retracting the cable. 31. Werkwijze volgens conclusie 29 of 30, verder omvattende, na door de kabelingangsopening (3) steken van de kabel, en voorafgaand aan terugtrekken van de kabel, koppel van de kabel met de kabelwig (5), en daarna buigen van de kabel richting de kabelwig.A method according to claim 29 or 30, further comprising, after inserting the cable through the cable entry opening (3), and prior to withdrawing the cable, coupling the cable to the cable wedge (5), and then bending the cable towards the cable wedge. 32. Werkwijze volgens conclusie 31, waar de kabel gekoppeld is met de kabelwig door middel van een restrictiedeel (60) verbonden met of gevormd door een achterste deel (61) van de kabelwig.A method according to claim 31, where the cable is coupled to the cable wedge by means of a restriction member (60) connected to or formed by a rear portion (61) of the cable wedge. 33. Werkwijze volgens conclusie 32, waarin de kabel in een passage (65) van het restrictiedeel wordt gestoken voor buigen van kabel richting de kabelwig.33. A method according to claim 32, wherein the cable is inserted into a passage (65) of the restriction member for bending the cable towards the cable wedge. 34. Werkwijze volgens een van de conclusies 29-33, verder omvattende positioneren van een hulpwig (17) welke het tegenoppervlak (9) voorziet tussen de kabelwig (5) en een hulpwigtegenoppervlak (9°) van de houder (2) voorafgaand aan terugtrekken van de kabel.34. A method according to any one of claims 29 to 33, further comprising positioning an auxiliary wedge (17) providing the counter surface (9) between the cable wedge (5) and an auxiliary wedge counter surface (9°) of the holder (2) prior to retracting the cable. 35. Werkwijze volgens conclusie 34, verder omvattende koppelen van de hulpwig (17) met de houder (2) gebruik makend van een losmaakbaar koppellichaam (70).35. The method of claim 34, further comprising coupling the auxiliary wedge (17) to the holder (2) using a releasable coupling body (70). 36. Werkwijze volgens conclusie 35, verder omvattende verbinden van het koppellichaam (70) met de hulpwig (17) gebruik makend van een fixatiedeel (71), zoals een bout.36. Method according to claim 35, further comprising connecting the coupling body (70) to the auxiliary wedge (17) using a fixing member (71), such as a bolt. 37. Werkwijze voor losmaken van een draadkabelklem (1) van een draadkabel (11), waarin de draadkabel geklemd is tussen een kabelondersteuningsoppervlak (8) van een houder (2) van de draadkabelklem en een draadklemoppervlak (6) van een kabelwig (5), welke kabelwig ten minste deel gepositioneerd is in een kabelwigkanaal (4) van de houder samen met een hulpwig (17), de werkwijze omvattende stappen van: - losmaken van een klemverbinding tussen de hulpwig, de houder, en de kabelwig; en - verwijderen van de draadkabel uit het kabelwigkanaal.37. A method for releasing a wire rope clamp (1) from a wire rope (11), wherein the wire rope is clamped between a rope supporting surface (8) of a holder (2) of the wire rope clamp and a wire clamping surface (6) of a wire rope wedge (5), the wire rope wedge being at least partially positioned in a wire rope wedge channel (4) of the holder together with an auxiliary wedge (17), the method comprising the steps of: - releasing a clamping connection between the auxiliary wedge, the holder, and the wire rope wedge; and - removing the wire rope from the wire rope wedge channel. 38. Werkwijze volgens conclusie 37, waarin de draadkabelklem geklemd was op de draadkabel gebruik makend van een werkwijze volgens een van de conclusies 34-36.A method according to claim 37, wherein the wire rope clamp was clamped to the wire rope using a method according to any one of claims 34 to 36. 39. Werkwijze volgens een van de conclusies 37-38, verder omvattende verwijderen van de hulpwig en de kabelwig uit de kabelwigkanaal.39. The method of any of claims 37 to 38, further comprising removing the auxiliary wedge and the cable wedge from the cable wedge channel. 40. Werkwijze volgens een van de conclusies 37-39, waarin de draadkabelklem een draadkabelklem volgens een van de conclusies 1-25 1s.40. A method according to any one of claims 37 to 39, wherein the wire rope clamp is a wire rope clamp according to any one of claims 1 to 25. 41. Werkwijze volgens een van de conclusies 37-40, verder omvattende losmaken van een koppellichaam (70) welke de hulpwig koppelt met de houder voorafgaand aan losmaken van de klemverbinding tussen de hulpwig, de houder, en de kabelwig.41. A method according to any of claims 37 to 40, further comprising releasing a coupling member (70) which couples the auxiliary wedge to the holder prior to releasing the clamping connection between the auxiliary wedge, the holder, and the cable wedge. 42. Werkwijze volgens een van de conclusies 37-41, verder omvattende met kracht slaan op de hulpwig, in het bijzonder een deel (17°) van de hulpwig welke uit de houder (2) steekt, om de klemverbinding tussen de hulpwig, de houder, en de kabelwig los te maken.42. Method according to any of claims 37 to 41, further comprising forcibly striking the auxiliary wedge, in particular a part (17°) of the auxiliary wedge which protrudes from the holder (2), to release the clamping connection between the auxiliary wedge, the holder, and the cable wedge.
NL2036552A 2023-12-15 2023-12-15 Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope NL2036552B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2036552A NL2036552B1 (en) 2023-12-15 2023-12-15 Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope
PCT/NL2024/050671 WO2025127932A1 (en) 2023-12-15 2024-12-13 Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2036552A NL2036552B1 (en) 2023-12-15 2023-12-15 Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope

Publications (1)

Publication Number Publication Date
NL2036552B1 true NL2036552B1 (en) 2025-06-27

Family

ID=94081123

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2036552A NL2036552B1 (en) 2023-12-15 2023-12-15 Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope

Country Status (2)

Country Link
NL (1) NL2036552B1 (en)
WO (1) WO2025127932A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958916A (en) * 1954-11-17 1960-11-08 Sr Warren R Dow Cable stopper
JPS5977150A (en) 1982-08-20 1984-05-02 Oomi Kogyo Kk Wire clamping apparatus
EP0179961B1 (en) 1984-10-31 1988-03-16 KLEY-FRANCE, Société Anonyme dite: Gripping block for a linear winch
CA2095986C (en) 1993-05-11 1996-02-13 Emeric Walter Johnson Cable clamp
US7039988B2 (en) * 2003-09-26 2006-05-09 Delri, Llc Single jaw wedge dead end
CN102701042B (en) 2012-06-21 2014-04-16 中国矿业大学 Fall-preventing brake sliding carriage and fall-preventing brake method for hoist bucket of vertical shaft
NL2032191B1 (en) * 2022-06-16 2024-01-04 Nemag Ip B V Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope

Also Published As

Publication number Publication date
WO2025127932A1 (en) 2025-06-19

Similar Documents

Publication Publication Date Title
JP4741730B2 (en) Wedge clamp type termination device for elevator tension members
JP4874487B2 (en) Termination device for tension members
AU710449B2 (en) Devices for clamping wires, etc.
AU2016336764B2 (en) Rope drum and fiber rope drive having such a rope drum
CN1046795C (en) Double saddle clamp
KR101928460B1 (en) Wedge dead end clamp assembly
CA2733011C (en) Rope termination device
US20030085391A1 (en) Winch
WO2004069716A1 (en) Termination device for an aramid-based elevator rope
US20250361921A1 (en) Wire Rope Clamp for a Wire Rope, Wire Rope with Wire Rope Clamp and Method of Clamping a Wire Rope Clamp onto a Wire Rope
NL2036552B1 (en) Wire rope clamp for a wire rope, wire rope with wire rope clamp and method of clamping a wire rope clamp onto a wire rope
CA2478264C (en) Single jaw wedge dead end
GB2474861A (en) Wedging clamp for cable end
EP1764337B1 (en) Lifting assembly
CA2095986C (en) Cable clamp
JP3171316U (en) Fiber rope retention clamp
RU186150U1 (en) Cable fastening belt
JPH08259144A (en) Elevator rope fastening device
JPH08145124A (en) Wire rope fixing bracket for construction machinery