EP4719955A1 - A rope gripper, a rope anchoring device, an elevator arrangement and a method for constructing an elevator - Google Patents
A rope gripper, a rope anchoring device, an elevator arrangement and a method for constructing an elevatorInfo
- Publication number
- EP4719955A1 EP4719955A1 EP23735803.1A EP23735803A EP4719955A1 EP 4719955 A1 EP4719955 A1 EP 4719955A1 EP 23735803 A EP23735803 A EP 23735803A EP 4719955 A1 EP4719955 A1 EP 4719955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rope
- gripper
- anchoring device
- groove
- ropes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention relates to a rope gripper (1) for an elevator, in particular for gripping one or more elevator ropes (3), comprising at least one pair of gripping members (11,12; 12,13; 13,14; 14,15) comprising elongated rope grooves (2) for receiving a side portion of a rope (3), wherein the rope grooves (2-2'') of the pair are oppositely positioned or at least thus positionable, and wherein the gripping members (11-15) of the pair of gripping members (11,12; 12,13; 13,14; 14,15) are movable towards each other to compress a rope (3) placed in the oppositely positioned rope grooves (2-2''), and wherein at least one or both of said rope grooves (2-2'') has elongated side flanks (2a,2b) for directly supporting the side portion of the rope (3). Each said side flank (2a,2b) of the rope groove (2-2'') comprises plurality of recesses (21-21'') distributed along the length of the rope groove (2-2''). The invention also relates to a rope anchoring device (10), an elevator arrangement (100) and a method utilizing the rope gripper (1).
Description
A ROPE GRIPPER, A ROPE ANCHORING DEVICE, AN ELEVATOR ARRANGEMENT AND A METHOD FOR CONSTRUCTING AN ELEVATOR
Field of the invention
The invention relates to anchoring elevator ropes.
Background of the invention
Such construction time elevators are known, hereinafter also referred to as jump-lifts, where the bottom part of an elevator hoistway is taken into transportation use already when the upper parts of the building and the hoistway are still under construction or even non-existent. In this kind of project, the upper parts of the building as well as the top part of the elevator hoistway can be constructed at the same time as an elevator car moving in the bottom part of the elevator hoistway already serves people on the lower floors of the building under construction. Typically in construction time elevators of this kind, the elevator car moving in the lower parts of the elevator hoistway is supported and moved during construction-time use with hoisting ropes movable with a hoisting machine mounted at a high position above the car. The hoisting machine typically comprises a drive wheel engaging hoisting ropes suspending on opposite sides thereof an elevator car and a counterweight. The ropes typically pass either from the car or the counterweight to a releasable rope anchoring device via which the ropes continue unbroken to a rope supply storage.
When a portion of the elevator hoistway under construction higher than the hoisting machine has reached a sufficient stage of completion, the completed part of the elevator hoistway can be taken into use. At this stage a configuration change, hereinafter also referred to as "a jump", is performed, wherein the hoisting machine and rope anchoring devices are hoisted to a new higher position. Thereafter, the car can reach a higher position than before
the jump and start to serve additional floors. The releasable anchoring device allows moving of rope via the rope anchor from a rope supply storage for thereby increasing length of the rope on opposite side of the rope anchor. By releasing the rope anchor and thereafter pulling rope via the rope anchor, the length of the hoisting ropes between the rope anchors can be extended longer in the configuration change. The pulling can be simply produced e.g. by hoisting of the rope anchors and/or the drive wheel of the hoisting machine around which the hoisting ropes pass. The rope length to be added to the system could also be pulled via the releasable rope anchoring device separately from the hoisting of said components, if desired. Such solutions have been suggested where the Document WO2022135665 Al illustrates this kind of jump lift, for instance.
There have been several different kinds of rope fixings, which are using friction. In prior art, there have been anchoring devices with provided with a rope gripper having a pair of gripping members in the form of plates, which are movable towards each other to compress a rope placed between them. Also such devices are known where the pair of gripping members comprise some sort of rope grooves for receiving a side portion of a rope.
A drawback of the known systems has been that the pressing of rope tightly between metal plates, flat or grooved, may be harmful for rope structure and they shall be changed after the lift is taken in final use. This is relatively expensive, laborious and time consuming work since the elevators are typically high rise elevators.
Brief description of the invention
The object of the invention is to introduce an improved rope gripper, rope anchoring device, elevator arrangement and method for constructing an elevator.
An object is particularly to introduce a new solution by which one or more of the above-mentioned problems of prior art and/or drawbacks discussed or implied elsewhere in the description can be alleviated.
It is introduced, inter alia, embodiments where rope gripping can be achieved firmly yet gently.
It is brought forward a new rope gripper for an elevator, in particular for gripping one or more elevator ropes, comprising at least one pair of gripping members comprising elongated rope grooves for receiving a side portion of a rope, wherein the rope grooves of the pair are oppositely positioned or at least thus positionable, and wherein the gripping members of the pair of gripping members are movable towards each other to compress a rope placed in the oppositely positioned rope grooves, and wherein at least one or both of said rope grooves has elongated side flanks for directly supporting the side portion of the rope.
Each said side flank of the rope groove comprises plurality of recesses distributed along the length of the rope groove.
With this kind of solution one or more of the above-mentioned objects can be facilitated.
Preferable further details of the rope gripper are introduced in the following, which further details can be combined with the rope gripper individually or in any combination.
In a preferred embodiment, the recesses are sub-grooves oriented to extend at an inclined and/or right angle relative to the longitudinal direction of the rope groove.
In a preferred embodiment, the sub-grooves are oriented to extend at an inclined angle relative to the longitudinal direction of the rope groove, the angles of successive sub-grooves being arranged to alternate.
In a preferred embodiment, the sub-grooves are oriented to extend at a right angle relative to the longitudinal direction of the rope groove.
In a preferred embodiment, at least some, but preferably most, or even every one of the sub-grooves of one of the side flanks is aligned with a sub-groove of the other of the side flanks.
In a preferred embodiment, sub-grooves have each a longitudinal direction and at least one, preferably two open ends.
In a preferred embodiment, each said side flank forms an outer face of the rope groove.
In a preferred embodiment, the flanks are flat or concave preferably with a circular cross section.
In a preferred embodiment, each said side flank forms a metal material face of the rope groove.
In a preferred embodiment, the recesses of each flank are separated from the other recesses of the same flank in longitudinal direction of the rope groove, in particular preferably by necks of metal material.
In a preferred embodiment, the width of the rope groove is greater than 10 mm. The groove has opposing edges, and the width of the groove is the distance between said opposing edges.
In a preferred embodiment, the recesses have opposing edges and the distance between said opposing edges as measured in longitudinal direction of the groove is greater than 1 mm, preferably greater than 2 mm, and preferably smaller than 10 mm, more preferably smaller than 5 mm.
In a preferred embodiment, the width of the sub grooves as measured in transverse direction of the sub groove is greater than 1 mm, preferably greater than 2 mm, and preferably smaller than 10 mm, more preferably smaller than
5 mm. The sub grooves have opposing edges, and the width of the sub groove is the distance between said opposing edges.
In a preferred embodiment, the rope groove has a bottom groove between the flanks, which has opposing edges, and is elongated and oriented to extend parallel with the longitudinal direction of the rope groove. The width of the bottom groove is the distance between said opposing edges. Preferably, said bottom groove extends uninterrupted more than half of the length of the rope groove. Preferably, the width of the bottom groove is greater than 1 mm.
In a preferred embodiment, the gripping members are arranged to form a stack and the rope gripper comprises a compressing mechanism for compressing the gripping members of the stack, the gripping members of the stack being piled such that compression on the first gripping member in thickness direction of the stack is transmitted, such as via intermediate gripping members of the stack (if any) positioned between said first and last, to the last gripping member in thickness direction of the stack.
In a preferred embodiment, the compressing mechanism comprises one or more screw members, such as bolts, extending through all the gripping members of the stack.
In a preferred embodiment, the gripper comprises one or more abutments for blocking the end of the screw member, or the counterpart, such as a nut member, from rotating.
In a preferred embodiment, the gripper, such as one of the gripping members thereof, comprises an indentation for receiving the end of the screw member, or the counterpart, such as a nut member, one or more side faces of the indentation forming the one or more abutments.
In a preferred embodiment, each said rope grooves has a straight main portion and slanted opposite ends. The straight portion is preferably at least 5 cm long, preferably longer.
In a preferred embodiment, the number of recesses on each said flank is more than 10. Said number is preferably 10-40, more preferably 10-30, most preferably 13-20. These ranges are well suitable for achieving the intended effect with most elevator ropes.
It is also brought forward a new rope anchoring device comprising one or more rope grippers, which are as defined anywhere above or as defined in any of the claims of the application.
With this kind of solution one or more of the above-mentioned objects can be facilitated.
Preferable further details of the rope anchoring device are introduced in the following, which further details can be combined with the anchoring device individually or in any combination.
In a preferred embodiment, the rope anchoring device comprises a support structure and said one or more rope grippers are mounted on said support structure.
In a preferred embodiment, the rope anchoring device comprises a rope wheel for guiding ropes extending away from a gripper rope anchoring device, such as preferably to the rope supply storage.
In a preferred embodiment, the rope wheel is rotatable by movement of the ropes, preferably freely or in a braked manner e.g. by aid of friction pads arranged to resist free rotation thereof so as to produce rope tension between the wheel and the gripper(s).
In a preferred embodiment the rope anchoring device comprises two of said grippers on top of each other and aligned for gripping same ropes, in particular such that the rope grooves are aligned.
It is also brought forward a new elevator arrangement comprising a hoistway; and one or more hoisting ropes; and a rope supply storage; and an elevator
car and a counterweight in the hoistway, which elevator car and counterweight are interconnected by the one or more hoisting ropes; and a hoisting machine unit mounted in a first hoisting machine position in the hoistway, such as on at least one of the guide rail lines to be vertically supported by said at least one of the guide rail lines; and a releasable rope anchoring device mounted in a first rope anchor position in the hoistway.
The rope anchoring device is as defined anywhere above or as defined in any of the claims of this application. The one or more hoisting ropes pass to the rope anchoring device from the car or counterweight, one or more rope grippers thereof being arranged to grip the one or more hoisting ropes in a releasable manner, and said one or more hoisting ropes pass to the rope supply storage via the rope anchoring device, in particular via one or more rope grippers thereof.
With this kind of solution one or more of the above-mentioned objects can be facilitated.
Preferable further details of the arrangement are introduced in the following, which further details can be combined with the arrangement individually or in any combination.
In a preferred embodiment, the ropes are round in cross section.
In a preferred embodiment, the ropes are metal wire ropes.
In a preferred embodiment, the metal wires of the metal wire rope are preferably twisted together.
It is also brought forward a new method for constructing an elevator comprising providing an elevator arrangement as described anywhere above or as defined in any of the claims of this application, and thereafter performing a configuration change comprising
releasing the rope anchoring device, in particular by releasing the rope gripper(s) thereof; and hoisting the hoisting machine unit and/or the rope anchoring device; and moving rope via the rope anchoring device from the rope supply storage for thereby increasing length of the one or more hoisting ropes on opposite side of the rope anchoring device; and closing the rope anchoring device, in particular the rope gripper(s) thereof; and mounting the hoisting machine unit to a second hoisting machine position, which is higher than the first hoisting machine position and/or the rope anchoring device a second rope anchoring device position, which is higher than the first rope anchoring device position.
With this kind of solution one or more of the above-mentioned objects can be facilitated.
Preferable further details of the rope method are introduced in the following, which further details can be combined with the method individually or in any combination.
In a preferred embodiment, the method comprises, in particular after said providing and before said configuration change, moving the elevator car for transporting passengers and/or goods with the hoisting machine unit while the hoisting machine unit and the rope anchoring device are in their first positions.
In a preferred embodiment, the method comprises, in particular after the performing configuration change, moving the elevator car for transporting passengers and/or goods with the hoisting machine unit while the hoisting machine unit and the rope anchoring device are in their second positions.
Generally, the car preferably comprises an interior wherein passenger and/or goods can be transported. The car preferably also comprises one or more doors by which the interior can be opened and closed. The door is preferably
an automatic door, whereby comfortable and safe elevator use can be provided by the elevator solution.
Brief description of the drawings
In the following, the present invention will be described in more detail by way of example and with reference to the attached drawings, in which
Figure 1 illustrates a perspective view of a rope gripper for an elevator according to an embodiment.
Figure 2 illustrates a side view of the rope gripper of Figure 1.
Figure 3 illustrates a front view of the rope gripper of Figure 1.
Figures 4-7 illustrate details of a gripping member according to a first embodiment.
Figures 8-11 illustrate details of a gripping member according to a second embodiment.
Figures 12-15 illustrate details of a gripping member according to a third embodiment.
Figure 16 illustrates an elevator arrangement according to an embodiment, as well as a phase in the method for constructing an elevator according to an embodiment.
Figure 17 illustrates preferred details of the layout of the elevator arrangement of Figure 16.
Figure 18 illustrates a phase in the method for constructing an elevator according to an embodiment.
Figure 19 illustrates a phase in the method for constructing an elevator according to an embodiment.
Figure 20 illustrates a releasable rope anchoring device according to an embodiment, as well as preferred details of the elevator arrangement of Figure 16.
Detailed description
Figure 1 illustrates a rope gripper 1 for an elevator according to an embodiment. The rope gripper 1 comprises at least one pair of gripping members 11,12; 12,13; 13,14; 14,15 comprising elongated rope grooves 2;2';2" for receiving a side portion of a rope 3, wherein the rope grooves 2;2';2" of the pair are oppositely positioned.
In the preferred embodiment of Figure 1, the rope gripper 1 comprises plurality of said pairs, although alternatively the solution could be simplified to comprise only on of said pairs.
In the preferred embodiment of Figure 1, The gripping members 11,12; 12,13; 13,14; 14,15 are arranged to form a stack. The rope gripper 1 comprises a compressing mechanism 4 for compressing the gripping members of the stack.
The gripping members 11-15 of each pair of gripping members 11,12; 12,13; 13,14; 14,15 are movable towards each other to compress a rope 3 placed in the oppositely positioned rope grooves 2;2';2". Figure 1 illustrates the rope gripper 1 in a gripping state, where each pair of gripping members 11,12; 12,13; 13,14; 14,15 have been moved towards each other with a compressing mechanism 4 to compress a rope 3 placed in the oppositely positioned rope grooves 2; 2'; 2".
In the preferred embodiment of Figure 1, each of the oppositely positioned rope grooves 2-2" has elongated side flanks 2a, 2b for directly supporting the side portion of the rope 3.
Figures 4, 8 and 12 illustrate each an embodiment of a gripping member Ills. The structure of the rope grooves 2-2" is such that each said side flank 2a, 2b of the rope groove 2-2" comprises plurality of recesses 21-21"
distributed along the length of the rope groove 2-2". The recesses are advantageous since they facilitate gentle but firm holding ability of the gripper 1 with a given compression. The recesses particularly provide a great number of gripping edge contacts with the rope 3, and the recess edges and the flank areas between the recesses can distribute firmly yet relatively gently force on the rope 3.
In the preferred embodiment, the recesses 21;21';21" of each flank 2a, 2b are separated from the other recesses 21;21';21" of the same flank 2a, 2b in longitudinal direction of the rope groove 2;2';2", in particular by necks of metal material.
Each said side flank 2a, 2b forms an outer face of the rope groove 2;2';2", wherein the face is preferably a metal material face. Metal is preferably, because grooves 21-21" with durable and well holding edges can be simply formed on metal, because it is hard material. Some other hard material could alternatively be utilized.
In the preferred embodiments, each said rope grooves 2;2';2" has a straight main portion. The straight portion is preferably at least 5 cm long, preferably longer. A straight portion facilitates that a rope 3 can be arranged simply to continue through the rope gripper 1. This also facilitates that the rope 3 can be gripped gently without bending the rope 3. The main holding ability is provided by the straight main portion. In the preferred embodiments, each said rope grooves 2;2';2" has also slanted opposite ends. This is advantageous since this facilitates that the ends of the groove 2;2';2" do not form edges that would contact the rope 3 and possibly form a strongly compressing edge, which might cause an indent on the rope 3 and thereby an discontinuity in rope form and properties. The slanting also facilitates that when the gripper 1 is in released state during a configuration change, a rope 3 can be moved via the gripper 1 without an edge scratching the rope 3. The slanting of the ends is advantageous for many reasons, however the slanting is not necessary.
In the preferred embodiment of Figure 4, the recesses 21 are sub-grooves oriented to extend at a right angle relative to the longitudinal direction of the rope groove 2. These sub-grooves are simple to machine, yet they facilitate well the holding ability of the gripper 1. A large number of this kind of recesses 21 can also be simply provided and utilized. Preferably at least some, but preferably most, or even every one [as illustrated] of the sub-grooves 21 of one of the side flanks 2a is aligned with a sub-groove of the other of the side flanks 2b, in particular when viewing in orthogonal direction to the longitudinal direction 12 of the rope groove 2. Hereby, the machining of the sub-grooves 21 is facilitated.
The sub-grooves have each a longitudinal direction 11 and at least one, preferably two open ends.
In the preferred embodiments of Figures 8 and 12, the recesses 21';21" are sub-grooves oriented to extend at an inclined angle relative to the longitudinal direction of the rope groove 2. An inclined sub-groove 21';21" facilitates distributing firmly and gently force on the rope via a relatively long gripping edge contact. Preferably at least some, but preferably most, or even every one [as illustrated] of the sub-grooves 21'-21"of one of the side flanks 2a is aligned with a sub-groove 21'-21" of the other of the side flanks 2b, in particular when viewing in orthogonal direction to the longitudinal direction 12 of the rope groove 2';2". Hereby, the machining of the sub-grooves 21'-21" is facilitated. The aforementioned angle is preferably greater than 30 deg, preferably at least 45 deg, preferably more, because a great angle facilitates that the edges 211,212 can hold the rope 3 firmly immovable in the longitudinal direction of the groove 2'; 2".
The sub-grooves have each a longitudinal direction 11 and at least one, preferably two open ends.
In the preferred embodiment of Figure 12, the sub-grooves 21" are oriented to extend at an inclined angle relative to the longitudinal direction of the rope
groove 2, the angles of successive sub-grooves 21" being arranged to alternate.
The dimensions of the grooves 2;2';2" are preferably as follows. The width wl of the rope groove 2-2" is preferably greater than 10 mm. Thus, the grooves of the gripper 1 are such sized that it is well suitable for gripping typical elevator ropes 3, in particular elevator ropes 3 having at least 10 mm diameter. As illustrated in Figures 5, 9 and 13, the groove 2;2';2" has opposing edges 201,202, and the width wl of the groove 2 is the distance between said opposing edges 201,202.
The dimensions of the recesses 21;21';21" are preferably as follows. The recesses 21;21';21" have opposing edges 211,212 and the distance d between said opposing edges 211,212 as measured in longitudinal direction of the groove 2 is greater than 1 mm, preferably greater than 2 mm. The distance d between said opposing edges 211,212 is however preferably smaller than 10 mm, more preferably smaller than 5 mm, most preferably smaller than 4 mm. These ranges are preferred because thus, the recesses are such sized that the gripper 1 is well suitable for gripping typical elevator ropes 3, in particular elevator ropes 3 having at least 10 mm diameter.
As mentioned, the recesses 21;21';21" are preferably sub grooves as illustrated. The width w2 of the sub grooves 21 as measured in transverse direction of the sub groove 21;21';21" is preferably greater than 1 mm, preferably greater than 2 mm, and preferably smaller than 10 mm, more preferably smaller than 5 mm, more preferably smaller than 4 mm. The sub grooves 21;21';21" have opposing edges 211,212, and the width w2 of the sub groove is the distance between said opposing edges 211,212.
The rope groove can be an undercut groove. Thereby the gripping effect thereof is facilitated. This is the case with the embodiment of Figures 8 and 12, wherein the rope groove 2';2" has a bottom groove 22';22" between the flanks 2a',2b';2a",2b", which bottom groove 22'; 22" has opposing edges 231,232, and is elongated and oriented to extend parallel with the longitudinal
direction 12 of the rope groove 2'; 2". In the embodiments of Figures 8 and 12, said bottom groove 22'; 22" extends uninterrupted more than half of the length of the rope groove 2'; 2". The width w3 of the bottom groove 22'; 22" is preferably greater than 1 mm, wherein the width w3 is the distance between said opposing edges 231,232.
As mentioned, in the preferred embodiments, gripping members 11,12; 12,13; 13,14; 14,15 are arranged to form a stack, and the gripping members of the stack are piled such that compression on the first gripping member 11 in thickness direction of the stack is transmitted to the last gripping member 15 in thickness direction of the stack. The number of gripping members 11,12; 12,13; 13,14; 14,15 in the stack is more than two, and said compression on the first gripping member 11 is transmitted via intermediate gripping members 12-14 of the stack positioned between said first and last, to the last gripping member 15. The number of gripping members 11,12; 12,13; 13,14; 14,15 in the stack is such that the stack comprises plurality of said pairs 11,12; 12,13; 13,14; 14,15, more precisely four in the embodiment illustrated.
The compressing mechanism 4 for compressing the gripping members of the stack comprises screw members s, such as bolts as illustrated in Figures 1-3, extending through all the gripping members 11,12; 12,13; 13,14; 14,15 of the stack. On the opposite side right side in Figure 2, the compressing mechanism 4 preferably comprises a counterparts screw members s, such as nut members, as illustrated.
In the preferred embodiments, the gripper 1 comprises one or more abutments a for blocking the end of the screw member s from rotating. Thus, the releasing of the compressing mechanism 4 is very quick to be done by one person safely with regard to risks of dropping of components. Preferably, as illustrated, the gripper 1, in particular one 15 of the gripping members, comprises an indentation i for receiving the end of the screw member s, one or more side faces of the indentation forming the one or more abutments a. The indentation i and the end of the screw member s are preferably hexagonal in shape.
Utilizing an indentation i and/or an abutment a, as shown and described is preferable but not necessary, however.
Figure 20 illustrates a preferred embodiment of a releasable rope anchoring device 10, as well as preferred details of an elevator arrangement 100 according to an embodiment.
The releasable rope anchoring device 10 comprises a rope gripper 1 as illustrated and described referring to Figures 1-15.
The releasable rope anchoring device 10 comprises a support structure 110 and said one or more rope grippers 1 are mounted on said support structure 110.
The rope anchoring device 10 comprises a rope wheel 111 for guiding ropes 3 extending away from a gripper 1 rope anchoring device 10, such as preferably to a rope supply storage 30. Thus, the ropes 3 between the gripper 1 and the rope supply storage 30 do not hang uncontrolled. This is advantageous since otherwise the ropes 3 and/or other structures could be damaged due to the weight of the ropes 3 and/or abrasion, particularly when ropes 3 and/or the rope anchoring device 10 is/are moved during a configuration change. In the preferred embodiment illustrated, the rope anchoring device 10 comprises two of said grippers 1 on top of each other. The grippers 1 are aligned for gripping the same ropes 3, in particular such that their rope grooves 2-2" are aligned.
Figure 20 illustrates the releasable rope anchoring device 10 in a mounted state, particularly being mounted on two guide rail lines 51,54.
Figure 16 illustrates an overall view of an elevator arrangement 100 according to an embodiment. The elevator arrangement 100 is in use or at least usable for transporting passengers and/or goods. The elevator arrangement 100 comprises a hoistway H; and guide rail line lines 51-54 in the hoistway 2, comprising at least a first guide rail line 51, which is preferably a guide rail line for guiding an elevator car 40, and a second guide rail line 54, which is preferably a guide rail line for guiding a counterweight 41, each guide rail line
51-54 preferably comprising a plurality of guide rail sections piled on top of each other.
The elevator arrangement 100 further comprises one or more hoisting ropes 3; and a rope supply storage 30 such as a rope reel arrangement for example. The elevator arrangement 100 comprises an elevator car 40 and a counterweight 41 in the hoistway H, which elevator car 40 and counterweight 41 are interconnected by the one or more hoisting ropes 3.
The elevator arrangement 100 further comprises a hoisting machine unit 8 mounted in a first hoisting machine position 8A in the hoistway 2, such as on at least one of the guide rail lines 51-54, in the example two of them, to be vertically supported by said at least one of the guide rail lines 51-54. The hoisting machine unit 8 comprises a motor 8a, such as an electric motor, and a drive wheel 8b engaging said one or more hoisting ropes 3, the drive wheel 8b being rotatable by the electric motor 8a.
The elevator arrangement 100 further comprises a releasable rope anchoring device 10 mounted in a first rope anchor position 10A in the hoistway H, the rope anchoring devicO 11 being as illustrated and described referring to Figure 20.
The one or more hoisting ropes 3 pass to the rope anchoring device 10 from the car 40 or from the counterweight 41 [in the illustrated case from the counterweight 41], one or more rope grippers 1 thereof being arranged to grip the one or more hoisting ropes 3 in a releasable manner. Said one or more hoisting ropes 3 pass via the rope the rope anchoring device 10, in particular via one or more rope grippers 1 thereof, to the rope supply storage 30.
The one or more hoisting ropes 3 pass from a gripper 1 of the rope anchoring device 10 to a rope wheel 111 for guiding the ropes 3, over it and to a rope supply storage 30.
In a method for constructing an elevator the method comprises providing an elevator arrangement 100 as illustrated and described referring to Figure 16, and thereafter performing a configuration change.
The configuration change comprises releasing the rope anchoring device 10, in particular by releasing the rope gripper(s) 1 thereof; and hoisting the hoisting machine unit 8 and/or the rope anchoring device 10; and moving rope 3 via the rope anchoring device 10 from the rope supply storage 30 for thereby increasing length of the one or more hoisting ropes 3 on opposite side of the rope anchoring device 10; and closing the rope anchoring device 10, in particular by releasing the rope gripper(s) 1 thereof. Figure 18 illustrates the hoisting steps and the moving of the rope 3 via the rope anchoring device 10 from the rope supply storage 30.
The hoisting of the hoisting machine unit 8 and/or the rope anchoring device 10 produces pulling on the hoisting ropes 3, which can be used for achieving said movement of rope 3 via the rope anchoring device 10 from the rope supply storage 30.
The configuration change further comprises mounting the hoisting machine unit 8 to a second hoisting machine position 8B, which is higher than the first hoisting machine position 8A and/or the rope anchoring device 10 a second rope anchoring device position 10B, which is higher than the first rope anchoring device position 10A. Figure 19 illustrates the hoisting machine unit 8 in the second hoisting machine position 8B and the rope anchoring device 10 a second rope anchoring device position 10B.
The method preferably also comprises, in particular after said providing and before said configuration change, moving the elevator car 40 for transporting passengers and/or goods with the hoisting machine unit 8 while the hoisting machine unit 8 and the rope anchoring device 10 are in their first positions 8A,10A. The method may comprise, in particular after said providing and before said configuration change performing constructing above the level of the hoisting machine unit 8 and the rope anchoring device 10. Thus,
transporting can be performed while construction work above is ongoing. The constructing can comprise constructing each guide rail lines 51-54 to extend higher in the hoistway H, such as by mounting on top of the guide rail line(s) further guide rail sections.
The method preferably also comprises, in particular after the performing configuration change, moving the elevator car 40 for transporting passengers and/or goods with the hoisting machine unit 8 while the hoisting machine unit 8 and the rope anchoring device 10 are in their second positions 8B,10B. Thus, transportation can be continued after the configuration change, and with a higher reach than before.
Generally preferably, the ropes 3 are round in cross section. Generally preferably, the ropes 3 are metal wire ropes. When gripping this type of ropes 3, the recessed gripping with the gripper 1 is particularly effective and feasible, and can be done without damaging the ropes 3 while ensuring quick operation and moving of rope from a rope supply storage 30.
Generally, the rope supply storage 30 is preferably in the form of one or more rope reels where additional length of hoisting rope can be taken from in a configuration change. The rope supply storage 30 stores an amount of rope that is required for one or more of said configuration changes. For achieving substantial height of jump, the rope supply storage 30 preferably stores more than 10 meters of each said one or more hoisting rope 3, preferably much more such as 20-100 meters.
Generally, the suspension ratio of the car 40 and counterweight 41 can be 2: 1 as illustrated in Figures. However, alternatively some other suspension ratio could be used such as 4:1, for example or any combination of suspension ratios mentioned.
Generally, the rope anchoring device 10 and the gripper(s) thereof can be utilized also in other kind of arrangements and methods than described and illustrated in examples of this application.
Generally, the solutions the rope anchoring device 10 and the gripper(s) 1 thereof, as well as the arrangement and method can be implemented also with a different positioning and mounting of the rope anchoring device 10 and the gripper(s) 1 than what is described and illustrated in examples of this application. Likewise, the solutions the rope anchoring device 10 and the gripper(s) 1 thereof, as well as the arrangement and method can be implemented also with a different positioning of the hoisting machine unit 8 than what is described and illustrated in examples of this application. For example, it is not necessary that the rope anchoring device 10 and hoisting machine unit 8 are mounted on the guide rail(s), but for instance mounting one or both of them on some other structure could alternatively be feasible, such as to a structure of the hoistway H or to a movable platform (structure known in the field also as "a cathead").
It is to be understood that the above description and the accompanying Figures are only intended to teach the best way known to the inventors to make and use the invention. It will be apparent to a person skilled in the art that the inventive concept can be implemented in various ways. The abovedescribed embodiments of the invention may thus be modified or varied, without departing from the invention, as appreciated by those skilled in the art in light of the above teachings. It is therefore to be understood that the invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims.
Claims
1. A rope gripper (1) for an elevator, in particular for gripping one or more elevator ropes (3), comprising at least one pair of gripping members (11,12; 12,13; 13,14;14,15) comprising elongated rope grooves (2;2';2") for receiving a side portion of a rope (3), wherein the rope grooves (2;2';2") of the pair are oppositely positioned or at least thus positionable, and wherein the gripping members (11-15) of the pair of gripping members (11,12; 12,13; 13,14; 14,15) are movable towards each other to compress a rope (3) placed in the oppositely positioned rope grooves (2;2';2"), and wherein at least one or both of said rope grooves (2;2';2") has elongated side flanks (2a,2b;2a',2b'; 2a", 2b") for directly supporting the side portion of the rope (3), characterized in that each said side flank (2a,2b;2a',2b'; 2a",2b") of the rope groove (2;2';2") comprises plurality of recesses (21;21';21") distributed along the length of the rope groove (2;2';2").
2. A rope gripper (1) according to claim 1, wherein the recesses (21; 21'; 21") are sub-grooves oriented to extend at an inclined and/or right angle relative to the longitudinal direction (12) of the rope groove (2;2';2").
3. A rope gripper (1) according to claim 2, wherein at least some, but preferably most, or even every one of the sub-grooves (21;21';21") of one (2a;2a';2a") of the side flanks (2a,2b;2a',2b'; 2a", 2b") is aligned with a sub-groove (21; 21'; 21") of the other of the side flanks (2b;2b';2b").
4. A rope gripper (1) according to any of the preceding claims, wherein each said side flank (2a,2b;2a',2b';2a",2b") forms an outer face of the rope groove (2).
5. A rope gripper (1) according to any of the preceding claims, wherein the flanks (2a,2b;2a',2b';2a",2b") are flat, or concave preferably with a circular cross section.
6. A rope gripper (1) according to any of the preceding claims, wherein each said side flank (2a,2b;2a',2b';2a",2b") forms a metal material face of the rope groove (2; 2'; 2").).
7. A rope gripper (1) according to any of the preceding claims, wherein the recesses (21;21';21") of each flank (2a,2b;2a',2b';2a",2b") are separated from the other recesses (21;2r;21") of the same flank (2a,2b;2a',2b';2a",2b") in longitudinal direction (12) of the rope groove (2;2';2"), in particular preferably by necks of metal material.
8. A rope gripper (1) according to any of the preceding claims, wherein the width (wl) of the rope groove (2;2';2") is greater than 10 mm.
9. A rope gripper (1) according to any of the preceding claims, wherein the recesses (21;21';21") have opposing edges (211,212) and the distance (d) between said opposing edges (211,212) as measured in longitudinal direction (12) of the groove (2;2';2") is greater than 1 mm, preferably greater than 2 mm, and preferably smaller than 10 mm, more preferably smaller than 5 mm.
10. A rope gripper (1) according to any of the preceding claims, wherein the width (w2) of the sub grooves (21;2r;21") as measured in transverse direction of the sub groove (21;21';21") is greater than 1 mm, preferably greater than 2 mm, and preferably smaller than 10 mm, more preferably smaller than 5 mm.
11. A rope gripper (1) according to any of the preceding claims, wherein the rope groove (2';2") has a bottom groove (2a',2b';2a", 2b") between the flanks (2a', 2b'; 2a", 2b"), which has opposing edges (231,232), and is elongated and oriented to extend parallel with the longitudinal direction (12) of the rope groove (2';2").
12. A rope gripper (1) according to any of the preceding claims, wherein the gripping members (11-15) are arranged to form a stack and the rope gripper (1) comprises a compressing mechanism (4) for compressing the gripping members of the stack, the gripping members of the stack being piled such that compression on the first gripping member (11) in thickness direction of the stack is transmitted, such as via intermediate gripping members (12-14) of the stack, if any, positioned between said first and last, to the last gripping member (15) in thickness direction of the stack.
13. A rope gripper (1) according to any of the preceding claims, wherein the compressing mechanism (4) comprises one or more screw members (s), such as bolts, extending through all the gripping members (11-15) of the stack.
14. A rope gripper (1) according to any of the preceding claims, wherein the gripper (1) comprises one or more abutments (a) for blocking the end of the screw member (s) from rotating.
15. A rope gripper (1) according to any of the preceding claims, wherein the gripper (1), such as one of the gripping members (11-15) thereof, comprises an indentation (i) for receiving the end of the screw member (s), one or more side faces of the indentation (i) forming the one or more abutments (a).
16. A rope gripper (1) according to any of the preceding claims, wherein each said rope grooves (2; 2'; 2") has a straight main portion and slanted opposite ends.
17. A rope anchoring device (10) comprising one or more rope grippers (1) as defined in any of the preceding claims.
18. A rope anchoring device (10) according to the preceding claim, comprising a support structure (110) and said one or more rope grippers (1) are mounted on said support structure (110).
19. A rope anchoring device (10) according to any of the preceding claims, wherein the rope anchoring device (10) comprises a rope wheel (111) for guiding ropes (3) extending away from a gripper (1) of the rope anchoring device (10), such as preferably to the rope supply storage (30).
20. A rope anchoring device (10) according to any of the preceding claims, wherein the rope wheel (111) is rotatable by movement of the ropes (3).
21. A rope anchoring device (10) according to any of the preceding claims, wherein the rope anchoring device (10) comprises two of said rope grippers (1) on top of each other and aligned for gripping same ropes (3), in particular such that their rope grooves (2;2';2") are aligned.
22. An elevator arrangement (100) comprising a hoistway (H); and one or more hoisting ropes (3); and a rope supply storage (30); and
an elevator car (40) and a counterweight (41) in the hoistway (H), which elevator car (40) and counterweight (41) are interconnected by the one or more hoisting ropes (3); and a hoisting machine unit (8) mounted in a first hoisting machine position (8A) in the hoistway (H); and a releasable rope anchoring device (10) mounted in a first rope anchor position (10A) in the hoistway (H), the rope anchoring device (10) being as defined in any of the preceding claims, the one or more hoisting ropes (3) passing to the rope anchoring device (10) from the car (9) or counterweight (10), one or more rope grippers (1) thereof being arranged to grip the one or more hoisting ropes (3) in a releasable manner, said one or more hoisting ropes (3) passing to the rope supply storage (30) via the rope anchoring device (10).
23. An elevator arrangement (100) according to any of the preceding claims, wherein the ropes (3) are round in cross section.
24. An elevator arrangement (100) according to any of the preceding claims, wherein the ropes (3) are metal wire ropes.
25. Method for constructing an elevator comprising providing an elevator arrangement (100) as defined in any of the preceding claims, and thereafter performing a configuration change comprising releasing the rope anchoring device (10), in particular by releasing the rope gripper(s) (1) thereof; and hoisting the hoisting machine unit (8) and/or the rope anchoring device (10); and moving rope (3) via the rope anchoring device (10) from the rope supply storage (30) for thereby increasing length of the one or more hoisting ropes (3) on opposite side of the rope anchoring device (10); and
closing the rope anchoring device (10), in particular the rope gripper(s) (1) thereof; and mounting the hoisting machine unit (8) to a second hoisting machine position (8B), which is higher than the first hoisting machine position (8A) and/or the rope anchoring device (10) a second rope anchoring device position (10B), which is higher than the first rope anchoring device position (10A).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FI2023/050298 WO2024246407A1 (en) | 2023-05-29 | 2023-05-29 | A rope gripper, a rope anchoring device, an elevator arrangement and a method for constructing an elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4719955A1 true EP4719955A1 (en) | 2026-04-08 |
Family
ID=87060338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23735803.1A Pending EP4719955A1 (en) | 2023-05-29 | 2023-05-29 | A rope gripper, a rope anchoring device, an elevator arrangement and a method for constructing an elevator |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4719955A1 (en) |
| CN (1) | CN121194939A (en) |
| AU (1) | AU2023451094A1 (en) |
| WO (1) | WO2024246407A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4606621B2 (en) * | 2001-03-07 | 2011-01-05 | 東芝エレベータ株式会社 | Rope gripping device |
| JP2006306556A (en) * | 2005-04-27 | 2006-11-09 | Toshiba Elevator Co Ltd | Elevator rope fixing member, and its positioning method |
| US11530112B2 (en) * | 2019-04-24 | 2022-12-20 | Wurtec, Incorporated | Wire rope clamp assembly |
| WO2022135665A1 (en) | 2020-12-21 | 2022-06-30 | Kone Corporation | Rope anchor and elevator arrangement and method for constructing elevator |
-
2023
- 2023-05-29 CN CN202380098666.2A patent/CN121194939A/en active Pending
- 2023-05-29 WO PCT/FI2023/050298 patent/WO2024246407A1/en not_active Ceased
- 2023-05-29 AU AU2023451094A patent/AU2023451094A1/en active Pending
- 2023-05-29 EP EP23735803.1A patent/EP4719955A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN121194939A (en) | 2025-12-23 |
| WO2024246407A1 (en) | 2024-12-05 |
| AU2023451094A1 (en) | 2025-11-20 |
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