CN1886538A

CN1886538A - Assembly Technology of Tension Parts of Elevator

Info

Publication number: CN1886538A
Application number: CNA2003801108899A
Authority: CN
Inventors: H·J·奥唐纳
Original assignee: Otis Elevator Co
Current assignee: Otis Elevator Co
Priority date: 2003-12-22
Filing date: 2003-12-22
Publication date: 2006-12-27
Anticipated expiration: 2023-12-22
Also published as: DE60334647D1; ATE485409T1; US20070277496A1; AU2003299979A1; ES2350447T3; EP1709221B1; EP1709221A4; CN1886538B; JP2007524549A; HK1099568A1; EP1709221A1; WO2005068696A1

Abstract

An elevator belt (20) or rope (25) includes a plurality of tension members (22, 26, 46) encased within a polyurethane jacket (24, 28). Each tension member includes a plurality of strands (42), each strand being made of a plurality of wires (40). During manufacture, the broken wire ends (44, 54) are re-received so that they do not project outwardly from the strand (42) or cord (46). Various techniques for readmission are disclosed.

Description

The package technique of elevator tension member

Technical field

For example present invention relates in general to the elevator tension member in band rope or rope, used, the invention particularly relates to that control and layout are subjected to the draw piece parts in assembly.

Background technology

Elevator system generally includes cab and the counterweight by rope or band Suo Zhicheng.Conventional equipment makes rope or band Suo Yidong so that cab is for example moved between the floor of building.Usually use cable wire.Recently, flat band Cable Structure has been proposed.This flat band rope is providing advantage aspect tractive force and the counter-bending fatigability.

A kind of exemplary flat band Cable Structure comprises that a plurality of steel that are encapsulated in the polyurethane jacket are subjected to draw piece.This steel is subjected to draw piece can comprise a plurality of wire rods, and they revolve strand together so that form as the cable that is subjected to draw piece.For one or more wire rods, it may rupture in difference in assembling process constantly.The wire ends of fracture is wound up in the mounting equipment when being subjected on the draw piece when sheath is applied in revolving the strand process or subsequently, and this can cause the problem of for example damaging this mounting equipment or interrupt this manufacture process at least largely.

Similar problem is present in the circular rope manufacturing of band sheath.The technology of this wire rod fracture of control need be provided.

If cable stock (stock) is cut off simply in each fracture place, then the length of cable stock will be at random and undesirably be restricted.Most lifts is installed needs the long draw piece that is subjected to continuously.

A kind of structure that has proposed is to cut whole cable or strand (promptly all component wire rods) at wire rod fracture position place and subsequently two cutting tips are welded together.The shortcoming of this scheme is very obvious.When using this cutting-solder technology, be subjected to required fracture strength of draw piece and counter-bending fatigability in the lift band rope descend.In some cases, reach 50% based on reducing the service life of flexural fatigue.

The invention provides a kind of replacement scheme of in elevator tension member or band rope or rope assembling process, handling the situation that one or more wire rod fractures occur.

Summary of the invention

On the whole, the present invention relates to being subjected to draw piece or being with the technology of controlling broken wires in rope or the rope assembling process effectively at lift.

An example making elevator tension member is included in and arranges a plurality of wire rods at least one strand.A plurality of strands are arranged at least one cable subsequently.This method is included in and determines whether to have the projection from least one strand or at least one cable of at least one broken wires when implementing corresponding deposition step and come out.If there is at least one broken wires, then the end of this wire rod is processed into and is convenient to prevent that their projections from corresponding strand or cable from coming out.

In one example, any broken ends that is detected is inserted in corresponding strand or the cable.In one example, broken ends is around at least one adjacent not broken wires dish strand.In another example, broken ends is not interweaving in the broken wires.

In another example, broken ends is fixed against the outer surface of corresponding strand or cable.In one example, broken ends welding or soldering are in place.In another example, bonding ground of broken ends fix in position.

Description of drawings

With reference to and in conjunction with the accompanying drawings to the following description of current preferred embodiment, each feature and advantage that the present invention may be better understood.In the accompanying drawings:

Figure 1A is the schematic diagram of lift band rope assembly;

Figure 1B is the schematic diagram of end of the rope assembly of band sheath;

Fig. 2 is the schematic diagram of band rope assembling process;

Fig. 3 A and 3B are the partial detailed schematic diagrames of band rope assembling process, wherein obviously show to have one or more broken wires;

Fig. 4 is the schematic diagram according to the method for making band rope assembly of embodiments of the invention;

Fig. 5 is a schematic diagram of implementing the exemplary tool of method of the present invention; With

Fig. 6 is the schematic diagram of the preferred structure of exemplary tool shown in Figure 5.

The specific embodiment

Figure 1A shows the part of lift band rope 20.A plurality of draw pieces 22 that are subjected to are encapsulated in the polyurethane jacket 24.In one example, being subjected to draw piece 22 is the cables that comprise 7 strands, and each strand comprises 7 independent wire rods.Wire rod revolves strand in known manner so that form strand, and strand revolves strand in known manner so that form cable.In the example shown, be provided with 12 and be subjected to draw piece 22 (i.e. 12 cables).In another example, be provided with 8 along the width of being with rope 20 and be subjected to draw piece.

Figure 1B shows has a plurality of ropes 25 that are subjected to the band sheath of draw piece 26, similarly made by draw piece 26 and the exemplary draw piece 22 that is subjected to shown in Figure 1A.Polyurethane jacket 28 surround revolve together be twisted into rope be subjected to draw piece 26.

Fig. 2 schematically shows assembling process 30, and wherein separately the wire rod main body 32 of wire rod is fed to cable and revolves winch 34, and this revolves winch and at first a plurality of wire rods is revolved to be twisted into independent strand and subsequently a plurality of strands to be revolved and be twisted into cable.The cable of finally making is arranged on the reel and is supplied to sheath to apply machine 36 at last, and wherein cable is suitably located and is arranged in

sheath

24 or 28 so that form band rope or the rope that finally is transported to suitable deposit position 38.For each stage shown in Fig. 2 signal, can use known technology.

With reference to Fig. 3 A and 3B, coil strand in a known way so that form strand 42 from a plurality of wire rods 40 of wire rod main body 32.In this example, 7 independent wire rods 40 are arranged in each independent strand 42.As shown in Figure 3A, a wire rod in the wire rod 40 has breaking portion, and it has two ends 44 of coming out from the outside projection of strand 42.Detector 50 detects this situation, and this detector can be for example to revolve the known devices of using in the winch at a high speed.In case detect the end 44 of fracture, revolve winch and be preferably shutdown so that solve the situation that broken wires occurs.Continue if revolve the strand process, broken wires may be wound on this and revolve in the winch, thereby causes bigger problem and make equipment downtime.

In this example, broken ends 44 is as shown in Figure 3A readmitted as the part of strand 42 by this way, comes out from the strand projection so that prevent broken ends, thereby makes band rope maker can not have the risk of coiling.In an example, in broken ends 44 manual other wire rods 40 of handling and be inserted in the broken ends zone.Other example technique comprises makes the breaking portion of wire rod interweave in strand or around at least one adjacent not broken wires dish strand.By with the broken ends plug to the inside, thereby make these ends be received in effectively by this way in the strand, that is, make these not projections of end come out to cause to revolve the winch fault.

In another example, broken ends is handled and is placed against strand.Bonding agent is applied near on the strand 42 of broken ends 44, so that broken ends is as a part of fix in position of strand and make these not projections of end come out.In another example, end 44 is in place against the adjacent wire rod welding or the soldering that are positioned at the appropriate position along strand.Preferably, prevent that any welding or brazing material from coming out with the mode projection of disturbing manufacture process.

Another example comprises that the broken ends with wire rod is welded or soldered to together.

In another example, the part of the outside projection of wire rod is cut, so that remainder is concordant with the remainder of strand.

In case when detecting broken wires, revolve machinery stops, act on the pulling force pine oil on the wire rod, so that can manually handle broken ends 44, thereby use selected ground technology to realize readmitting of broken ends.

Fig. 3 B schematically shows the further part of this process, and wherein independent strand 42 revolves strand together so that form cable 46.In the example shown in Fig. 3 B, another detector 52 is checked the cable that for example has the broken wires of coming out from the outside projection of cable.In the accompanying drawings, detect broken ends 54, and revolve machinery stops so that broken ends is recaptured in the cable.In this stage of this process, can use any in the above-mentioned example technique, do not occur reeling so that form in the process of lift band rope 20 or rope 25 so that guarantee once more in follow-up cable processing.Detector 52 comprises known detection part.

In case cable has passed through the inspection undertaken by detector 52, cable is supplied to the sheath that comprises squeezer and applies machine, thereby forms band rope or rope structures so that apply the

sheath

24 or 28 of polyurethane.

Fig. 4 schematically shows the method for making a kind of exemplary band rope assembly 20.In this example, sheath is extruded on the cable so that form level and smooth, continuously and the sheath outside of interrupting without any groove.Cable supply department 50 provides cable.In an example, cable supply department 50 comprises a plurality of bobbins, and it comprises the steel wire rod strand of the coiling that forms cable 46.Can or implement in the method that applies sheath to form cable in the same equipment of prefabricated and pre-coiling cable, this depends on the needs of particular case.

Positioner 52 is aimed at cable 46 with required alignment so, so that the longitudinal axis of cable parallel band rope assembly 20 extends.Take-up device 54 applies the tension amount of controlling cable 46 in the process at sheath.Although only schematically show single tension station 54, can use a plurality of take-up devices along the assembly line of band rope assembly 20.For example, on applying the both sides of station 56, sheath preferably applies identical pulling force to cable.Tension station 54 is preferably the controller that comprises suitable programming so that monitoring pulling force and with pulling force control within the required range.

More particularly, act on pulling force on each independent cable and be preferably in the process of making band rope assembly and remain on desired level, so that control band Cable Structure or geometry as much as possible.The pulling force that acts on each independent cable can be different from other cable.In an example, apply about 50 newton's basic pulling force for each cable, and make band rope assembly sample.This band rope assembly sample is preferably subsequently and is examined, so that guarantee to form required geometry.If there is undesired deformation, for example have longitudinal curvature a little, then the pulling force of regulating action on one or more independent cables is so that overcome undesirable band rope geometry variation.By making a plurality of samples and measuring and regulate, can determine the pulling force of required independent cable so that produce desirable band rope geometry.

The pulling force that acts on each independent cable is preferably enough big so that apply the identical cord horizontal position of maintenance in the process at whole sheath.Because this example is included in the sheath applying portion in the manufacture process and saves cable support, therefore employed pulling force need be than at the employed pulling force height of the process that cable support is arranged in this instantiation procedure.

Although do not illustrate especially, (well known in the prior art) pulling force feedback device preferably is set, in manufacturing equipment so that in whole assembling process, monitor on demand and the pulling force of regulating action on each independent cable.

Sheath applies station 56 and is preferably and comprises that suitable mold or other are used for sheath material is applied to device on the cable 46.Source of supply 58 applies station 56 in the mode of routine to sheath selected material is provided.This sheath material can be applied on the cable 46 by compression molded, extruding or alternate manner.

In an example, roller 59 applies the part of station 56 as sheath or is arranged near sheath and applies after the station 56.Roller 59 is preferably and is coated with Telfon (polytetrafluoroethylene (PTFE)).The surface treatment that provides after sheath material applies for the deflector roll contact surface of band rope assembly is provided roller 59.In this example, roller provides level and smooth, plane, parallel band rope surface.Roller 59 can for example be provided at the raised design on the jacket surface.Be preferably and comprise roller 59, this is because saved the cable support that uses in conventional equipment, therefore needs to introduce extra size Control.This roller 59 provides this additional size Control.

In the example shown, roller 59 is positioned on the opposite sides of being with the rope assembly (although only showing a roller in Fig. 4).Roller 59 is preferably on the whole width of band rope assembly and extends, so that realize for the best size Control in band rope surface.

In one example, roller 59 is that freewheel rotates, and makes the roller motion based on the moving through roller of band rope assembly.In another example, roller be active movement so that move with controllable rate.

Formed band rope assembly 20 is handled at surface treatment station 60 subsequently.In an example, surface treatment station 60 comprises that shaped device, dimensional inspection device and cold water solidify bath, and wherein sheath material and the cable in this material are cooled to suitable temperature.

The laser triangulation device that testing fixture is for example known determines whether to acquire required geometry.

Formed band rope assembly 40 is preferably subsequently to be deposited, and Reference numeral 62 expressions are for example left on the bobbin so that be transported to the diverse location that elevator system is installed.Band rope assembly 20 can cut into length-specific or in advance with bigger amount supply, can select to be used for the appropriate amount of the band rope material of particular application the installation site technical staff.

Fig. 5 schematically shows and is used for sheath 24 is applied to device for molding 70 on the cable 46.Conventional structure comprises a plurality of cable support members, and it makes and form groove at least one outer surface of band rope assembly 20.Because the present invention has saved this groove, therefore preferably do not use typical cable support structure with this cable support members.

Exemplary shaped device 70 shown in Figure 5 comprises mould housing 72, and it has input side 74.Cable positioner 76 is preferably and is positioned at input side 74.Cable positioner 76 comprises a plurality of openings 78, and cable 46 is input in this device 70 through these openings.Opening 78 is preferably through processing accurately or otherwise forms, and keeps close tolerance so that make between the inside of the outside of cable 46 and opening 78.Closely cooperating between opening 78 and the cable 46 prevented the backflow of sheath material in molding process.

For example be appreciated that by Fig. 5, the opening 78 in cable 46 process cable positioners 76, any broken ends of scattering can not be passed opening 78.This makes cable be out of shape and has interrupted band rope manufacture process.

In an example, apply the part of process as sheath, check the state of cable so that the problem that the broken ends that prevents to scatter causes.Being arranged on the appropriate position in this shaped device 70 to above-mentioned another similar detector arranges so that guarantee wire rod suitable in band rope manufacture process.

Mould housing 72 comprises one or more openings 79, and by pressure injection-moulded, sheath material is applied on the cable through these openings.Known in the art be, when moulding material suitably heats, the pressure injection-moulded material that can be used for molded for example polyurethane.In conjunction with this specification, those of ordinary skill in the art can select suitable condition to realize required result.

Device for molding 70 is included in the opening 80 on the outlet side 82 of mould housing 72.Opening 80 is preferably shaped to outer shape and the surface of being convenient to control band rope assembly 20.

In the example depicted in fig. 6, the opening 80 of device for molding 70 has non-linear configuration along the part on the formation deflector roll contact zones rope surface of this opening.This non-linear configuration provides the different-thickness of band rope assembly along width.Be appreciated that by accompanying drawing being with the rope assembly to compare with the part that cable is not set of band rope assembly corresponding to the part of cable 46 positions has the thickness that reduces.

The non-linear configuration of the variation on

surface

86 and 88 can be configured to accommodate in the variation along the amount of contraction of being with Suo Kuandu that occurs in band rope surface treatment and solidification process.Should be appreciated that the cross section of amount of contraction corresponding to urethane jacket material.In the zone with cable 46, owing to there is cable materials, cable materials is a steel in some instances, so amount of contraction is less.The part that does not have cable of band rope assembly has temporary transient big thickness, and this is because have bigger amount of contraction in these positions of band rope assembly.

The varied in thickness that provides along element width helps to realize final acquisition:

flat surface

86 and 88 and on the surface parallel alignment between 86 and 88.Structure type shown in Figure 6 is unique for the scheme of making band rope assembly.In the process of prior art, the mold wheel that is comprised applies the part of station as sheath.This mold wheel is compacted into flat structure with sheath material in operation, and it is as the part of initial cooling procedure.Therefore, the technical scheme that the thickness of non-linear configuration changes as the part of a kind of exemplary form of implementation of the present invention, has solved the problem that occurs the amount of contraction variation in solidification process with unique mode.

In an example, in the thickness of the sheath of making by the opening 80 of device for molding shown in Figure 6, have roughly.05-.10 the variation of millimeter.The overall dimension of specific band rope assembly, the size of cable and selected sheath material will stipulate that the required specific thicknesses of particular case changes.In conjunction with this specification, those of ordinary skill in the art can select suitable size so that satisfy the needs of its particular case.

By the present invention, the band rope or the main body of rope or the length of cable main body can increase significantly.If when wire rod ruptures, cut off the cross section of strand or cable simply, then cause undesirable material discarded, and unavailable strand of many length or cable for most lifts are installed, occur.By using above-mentioned example technique, provide the obvious increase of the length of cable and band rope main body.In an example, the order of magnitude without any the band Suo Changdu that cuts-be welded to connect in being subjected to draw piece is 13km.Therefore, this example technique makes and is subjected to the not only more saving, more effective of draw piece manufacture process.

This exemplary embodiment can comprise one or more broken wires in a certain position.Form each strand and 7 strands form in the example of each cable at 7 wire rods, about 2% of the resistance to tension of a broken wires representative loss continuous wire.This minute differences can obviously not influence intensity, and this is not have broken wires because many wire rods are some or the overwhelming majority in undamaged and a plurality of cables at all.

By this exemplary technology, handle broken wires by this way, that is, increase lift band rope manufacturing efficient relevant with rope and saving property and make and are installed.

Above description only is exemplary, rather than restrictive.Under the situation that breaks away from the spirit and scope of the invention, those of ordinary skill in the art can make various modification and change.Protection scope of the present invention is only limited by following claim.

Claims

CLAIMS 1. A method of manufacturing a tension member for an elevator system comprising:

(A) arranging a plurality of wires (40) in at least one strand (42);

(B) arranging a plurality of strands (42) in at least one cable (46);

(C) when performing steps (A) and (B), determining whether there is at least one broken wire end protruding from at least one of said strands (42) or at least one of said cables (46) stick out; and

(D) Treating the broken wire end (44, 54) so as to prevent the wire end from sticking out.

2. The method of claim 1, wherein step (D) includes inserting the broken wire end (44, 54) into the corresponding strand (42) or cable (46).

3. The method of claim 1, wherein step (D) includes securing the broken wire end (44, 54) against the outer surface of the respective strand (42) or cable (46).

4. The method of claim 3, wherein step (D) includes brazing the broken wire end (44, 54) to at least one adjacent portion of the unbroken wire.

5. The method of claim 3, wherein step (D) includes welding the broken wire end (44, 54) to at least one adjacent portion of the unbroken wire.

6. The method of claim 3, wherein step (D) includes adhesively securing the broken wire end (44, 54) to at least one adjacent portion of the unbroken wire.

7. The method of claim 1, wherein step (D) includes twisting the broken wire end (44, 54) around at least one adjacent unbroken wire.

8. The method of claim 1, wherein step (D) includes cutting off the protruding portion of the wire.

9. The method according to claim 1, characterized in that a sheath (24) is applied on at least one cable and steps (C) and (D) are carried out together with the step of applying the sheath (24).

10. An elevator system tension member assembly having a plurality of cables, the cables being sheathed, the tension member being manufactured by a method comprising:

(A) arranging a plurality of wires (40) in at least one strand (42);

(B) arranging a plurality of strands (42) in at least one cable (46);

(C) applying a sheath (24) over at least one cable (46);

(D) when performing at least steps (A) and (B), determining whether there is at least one broken wire end (44, 54) from at least one of said strands (42) or said cable (46) protrude from at least one of the

(E) Treating the broken wire end (44, 54) to prevent the wire end from sticking out.

11. The tension member according to claim 10, characterized in that step (E) of the method comprises inserting the broken wire end (44, 54) into the corresponding strand (42) or cable (46) .

12. The tension member according to claim 10, characterized in that step (E) of the method comprises securing the broken wire end (44, 54).

13. The tension member of claim 12, wherein the securing comprises brazing the broken wire end to at least one adjacent unbroken wire portion.

14. The tension member of claim 12, wherein the securing comprises welding the broken wire end to at least one adjacent unbroken wire portion.

15. The tension member of claim 12, wherein the securing comprises adhesively securing the broken wire end (44, 54) to at least one adjacent unbroken wire portion.

16. The tension member of claim 10, wherein step (E) of the method comprises cutting off the protruding portion of the broken wire.

17. The tension member of claim 10, wherein step (E) of the method includes twisting the broken wire end (44, 54) around at least one adjacent unbroken wire.

18. The tension member of claim 10, wherein the method comprises performing steps (D) and (E) together with performing step (C).