WO2015100528A1 - Corde à structure ouverte pour levage - Google Patents
Corde à structure ouverte pour levage Download PDFInfo
- Publication number
- WO2015100528A1 WO2015100528A1 PCT/CN2013/090862 CN2013090862W WO2015100528A1 WO 2015100528 A1 WO2015100528 A1 WO 2015100528A1 CN 2013090862 W CN2013090862 W CN 2013090862W WO 2015100528 A1 WO2015100528 A1 WO 2015100528A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rope
- layer
- steel
- core strand
- core
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0613—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the rope configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/104—Rope or cable structures twisted
- D07B2201/1076—Open winding
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/208—Enabling filler penetration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2007—Elevators
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2084—Mechanical controls, e.g. door lashes
Definitions
- the invention relates to a rope for use in a hoisting system or for use as control cable in a drive system such as a window elevator system.
- a rope which has become the benchmark in the industry has following construction: 19 + 8x7, this means a core strand of nineteen steel filaments and eight strands of each seven steel filaments.
- the primary object of the invention is to provide an alternative rope which is cheaper than the 19 + 8x7 rope construction.
- Another object of the invention is to provide a rope which has a long life time.
- Still another object of the invention is to provide a rope which has good penetration for a thermoplastic or for an elastomer.
- a rope for use in a hoisting system or for use in drive system such as a window elevator system.
- the rope comprises a core strand and only seven layer strands. These seven layer strands are twisted around the core strand and form an unsaturated layer around the core strand.
- saturated layer refers to a layer around the core strand where penetration of an elastomer or a polymer is possible during a normal extrusion process.
- thermoplastics or elastomers The formation of an unsaturated layer around the core strand allows thermoplastics or elastomers to penetrate. This penetration has a triple effect.
- the rope becomes mechanically anchored in the thermoplastic or elastomer.
- the thermoplastic or elastomer provides corrosion protection for the rope, in addition to the corrosion protection already offered by the individual coatings on the filaments of the rope.
- the thermoplastic or the elastomer functions as a type of cushion between two neighbouring layer strands and thus avoid or at least mitigate any fretting of these two neighbouring strands.
- At least one of the layer strands and most preferably all of the layer strands comprise one steel filament functioning as core of the layer strand and six steel filaments twisted around this one steel filament.
- the one steel filament has a filament diameter d 3 and the six steel filaments each have the same filament diameter d 4 , and d 4 is smaller than d 3 in order to create an unsaturated layer around the one steel filament.
- the difference between d 3 and d 4 is preferably greater than 0.01 mm. Due to the unsaturated layer in the layer strands the polymer or the elastomer not only penetrates between the layer strands but also inside the layer strands.
- this unsaturated layer has been reached by decreasing the diameter of the steel filaments in the layer and these steel filaments are the filaments positioned at the radially outer side of a cross -section of the rope according to the invention, the life time of the rope is increased, since bending stresses created in thin filament are smaller than bending stresses created in a thick filament.
- the core strand has three steel filaments functioning as core of the core strand and nine steel filaments twisted around the three steel filaments.
- the three steel filaments have a diameter di and the nine steel filaments all have a diameter d2, and d2 is smaller than di in order to create an unsaturated layer around the three steel filaments.
- the difference between di and d2 is greater than 0.01 mm. Due to the unsaturated layer in the core strand the polymer or elastomer also penetrates inside the core strand.
- a preferred embodiment of the rope according to the first aspect of the invention has following construction: 3xdi + 9xd 2 + 7 x (lxd 3 + 6xd 4 )
- the filament diameter d 3 is smaller than or equal to di and greater than or equal to d 2 .
- the diameters di, d 2 , d 3 and d 4 are all ranging from 0.08 mm to 0.26 mm, most preferably from 0.10 mm to 0.24 mm, e.g. from 0.10 mm to 0.22 mm.
- the small filament diameter guarantees a high resistance against fatigue and a long life time.
- the directions of lay of the rope according to the first aspect are either SSZS or ZZSZ. This means following two embodiments:
- the layer strands are individually twisted in a direction opposite to the twisting of the layer strands around the core strand.
- the filaments of the layer strands of the rope and preferably all the filaments of the rope are provided with a corrosion-resistant coating such as a zinc or zinc alloy coating.
- the zinc alloy coating may be a zinc aluminium coating.
- a zinc aluminium coating may have an aluminium content ranging from 2 per cent by weight to 12 per cent by weight, e.g. ranging from 3 % to 11%, e.g. around 5 % or around 10%, the remainder being zinc.
- zinc a tin (Sn) may also be applied.
- the steel filaments may have magnesium oxide particles in a liquid carrier on their surface.
- the rope may further comprise a coating of a thermoplastic or an elastomer.
- suitable thermoplastic materials are : polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethylene terephthalate (PET), polyethylene napthalate (PEN), polybuteen terephthalate (PBT) polyvinylchloride (PVC), polyamide (PA), polyester (PES), polyimide (PI), polycarbonate (PC) , styrene acrilonitryl (SAN), acrylonitril- butadiene-styrene (ABS), thermoplastic polyurethane (TPU), thermoplastic polyolefins (TPO), thermoplastic copolyetheresters , copolymers of these polymers or similar materials.
- a preferable elastomer is a polyurethane.
- the rope as such, coated with a thermoplastic or elastomer or not coated, may be used in a hoisting system such as an elevator for persons or for goods.
- a hoisting belt has a polymer or an elastomer as matrix material.
- the belt further comprises one or more ropes according to the first aspect of the invention. These one or more ropes function as reinforcing elements and load bearing elements of the belt.
- a drive system such as a window elevator in a car door, a drive system for a sliding door, or a canvas roof drive, or a garage door opener drive system.
- This drive system has a rope according to the first aspect of the invention to function as a transmission member or a control element.
- Figure 1 is a cross-section of an uncoated rope according to the first aspect of the invention.
- Figure 2 is a cross-section of a coated rope according to the first aspect of the invention.
- FIG. 1 illustrates a window elevator system according to the third aspect of the invention.
- Figure 4 is a cross-section of a hoisting belt according to the second aspect of the invention.
- Starting material to manufacture a rope according to the first aspect of the invention is a steel wire rod with a composition along following lines: a minimum carbon content of 0.65%, a manganese content ranging from 0.40% to 0.70%, a silicon content ranging from 0.15% to 0.30%, a maximum sulfur content of 0.03%, a maximum phosphorus content of 0.30%, all percentages being percentages by weight.
- carbon content is less than 1.10%. Common percentages for carbon are 0.70% and 0.80%.
- - chromium (%Cr) in amounts ranging from 0.10% to 1.0%, e.g. from 0.10 to 0.50%;
- - nickel (%Ni) in amounts ranging from 0.05% to 2.0%, e.g. from 0.10% to 0.60%;
- - cobalt (%Co) in amounts ranging from 0.05% to 3.0%; e.g. from 0.10% to 0.60%;
- - vanadium (%V) in amounts ranging from 0.05% to 1.0%, e.g. from 0.05% to 0.30%;
- - copper (%Cu) in amounts ranging from 0.10% to 0.40%, e.g. from 0.15% to 0.30%;
- - boron (%B) in amounts ranging from 0.001% to 0.010%, e.g. from 0.002% to 0.006%;
- - niobium (%Nb) in amounts ranging from 0.001% to 0.50%, e.g. from 0.02% to 0.05%;
- - titanium (%Ti) in amounts ranging from 0.001% to 0.50%, e.g. from 0.001% to 0.010%;
- - antimony (%Sb) in amounts ranging from 0.0005% to 0.08%, e.g. from 0.0005% to 0.05%;
- - calcium (%Ca) in amounts ranging from 0.001% to 0.05%, e.g. from 0.0001% to 0.01%;
- %Zr - zirconium
- - aluminum (%A1) preferably in amounts lower than 0.035%, e.g. lower than 0.015%, e.g. lower than 0.005%;
- %REM - rare earth metals
- the wire rod is cold drawn to the desired filament diameters in various subsequent cold drawing steps.
- the subsequent cold drawing steps may be alternated by one or more suitable thermal treatments such as patenting, in order to allow for further drawing.
- a corrosion resistant coating such as a zinc or zinc alloy coating may be provided at the level of the end drawn final steel filament or as an intermediate step at an intermediate diameter before the final drawing operations.
- the zinc coating may be applied by means of an electroplating process or by means of a hot dip process.
- a hot dip process as described in WO-A1-2001/86058 or in WO-A1- 2008/101831 may be applied as this provides a thin zinc layer with a good anchorage to the steel filaments thanks to the zinc -iron alloy between the steel and the zinc.
- the resistance against corrosion may be further increased by treating the steel filaments with a liquid carrier such as an aliphatic mineral containing magnesium oxide particles, as disclosed in WO-A1- 2007/071340.
- the various twisting steps may be done by means of a double- twisting device (sometimes referred to as a buncher) or by means of a tubular twisting machine (sometimes referred to as a cabling machine).
- a double- twisting device sometimes referred to as a buncher
- a tubular twisting machine sometimes referred to as a cabling machine
- Rope 100 comprises a core strand 102.
- Core strand 102 has a core 104 of three filaments 106 with filament diameter di which are twisted together and a layer 108 of nine filaments 110 with diameter d 2 which are twisted around the three filaments 106.
- the rope 100 further comprises a layer of seven layer strands 112 which are twisted around the core strand 102 and which form an unsaturated layer around this core strand 102.
- Each layer strand 1 12 has a 1x7 or 1+6 construction with a core filament 114 of diameter d 3 and six layer filaments 116 of diameter d 4 twisted around core filament 1 14.
- an open rope construction is obtained with openings between the layer strands 112, with openings between the layer filaments 116 of the layer strands 112 and with openings between the layer filaments 110 of the core strand 102.
- Figure 2 shows the cross-section of a coated rope 200.
- the steel rope 100 is provided with a coating of a polyurethane 202. This may be done by means of an extrusion process.
- the polyurethane 202 is able to penetrate inside the rope 100 until it reaches and contacts the three core filaments of the core strand.
- the lay length is the axial distance required to make a 360 degree revolution of any element in a strand or a cord.
- the length of lay is expressed in millimeters (mm).
- the recommended lengths of lay are based on the ISO recommendation R-388-R20 series, ranging from 2.50 mm to 25.00 mm.
- the direction of lay is the helical disposition of the components of a strand or a cord.
- the strand or cord has an 'S' or left-hand lay if, when held vertically, the spirals around the central axis of the strand or cord conform in direction and slope to the central portion of the letter 'S ⁇
- the strand or cord has an 'Z' or right-hand lay if, when held vertically, the spirals around the central axis of the strand or cord conform in direction and slope to the central portion of the letter ' ⁇ '.
- the diameter of the rope is measured optically or by means of a micrometer.
- the ovality is the difference between the greatest diameter of the cross-section of the rope and the smallest diameter of the cross- section of the rope and is expressed in mm.
- the percentage of rubber penetration is determined by measuring the degree of air wicking along the steel rope cured in rubber under controlled conditions of temperature, time and curing pressure. The amount of air passing through a rubber block in which the steel rope is embedded, is measured at 4 bar air pressure difference. 100% rubber penetration means that no air is passing.
- the degree of rubber penetration is a measure for the degree of penetration by a thermoplastic or by an elastomer.
- FIG. 3 illustrates the use of a rope as control cable in a window elevator system 300.
- Driving drum 302 may be electrically driven or may be manually operated. The rotational movement of the driving drum 302 is translated in a to and fro movement of the rope 100 which is the transmission or control member. The to and fro movement of the rope 100 is in its turn translated in an upward or downward movement of window 304.
- a carriage 306 is attached to the rope 100. This carriage 306 carries the window 304 in its upward and downward movement thereby helped by means of a guide 308.
- One or more pulleys 310 guide the rope 100 in its trajectory.
- Figure 4 illustrates a cross-section of a hoisting belt 400 where several ropes 100 are embedded.
- the hoisting belt 400 may have a matrix of rubber or of polyurethane 402.
- the polyurethane 402 is penetrating between the layer strands 112 until and even inside the core strand 102 of the rope 100.
- Hoisting belt 400 may be used in elevators, harbor cranes, mining shafts, sucker rods...
Landscapes
- Ropes Or Cables (AREA)
Abstract
L'invention concerne une corde (100) destinée à être utilisée dans un système de levage ou un système d'entraînement tel qu'un système de levage de vitre (300), laquelle corde comprend un toron d'âme (102) et sept torons de couche (112). Les sept torons de couche (112) sont torsadés autour du toron d'âme (102) et forment une couche non saturée autour du toron d'âme (102). De préférence, les sept torons de couche (112) constituent également une structure ouverte. Une structure préférable consiste en 3xd1 + 9xd2 + 7 x (1xd3 + 6xd4). Avantage : la corde a une longue durée de vie et une bonne pénétration avec un élastomère ou polymère.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2013/090862 WO2015100528A1 (fr) | 2013-12-30 | 2013-12-30 | Corde à structure ouverte pour levage |
CN201390001267.1U CN206109854U (zh) | 2013-12-30 | 2013-12-30 | 用于提升的开放式绳索 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2013/090862 WO2015100528A1 (fr) | 2013-12-30 | 2013-12-30 | Corde à structure ouverte pour levage |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2015100528A1 true WO2015100528A1 (fr) | 2015-07-09 |
WO2015100528A8 WO2015100528A8 (fr) | 2015-08-13 |
Family
ID=53492889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/090862 WO2015100528A1 (fr) | 2013-12-30 | 2013-12-30 | Corde à structure ouverte pour levage |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN206109854U (fr) |
WO (1) | WO2015100528A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022031740A1 (fr) * | 2020-08-03 | 2022-02-10 | Fort Wayne Metals Research Products Corp | Fil à haute résistance |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020083893A1 (fr) * | 2018-10-23 | 2020-04-30 | Bekaert Advanced Cords Aalter Nv | Câble en acier, câble en acier revêtu et courroie comprenant un câble en acier |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1370251A (zh) * | 1999-08-26 | 2002-09-18 | 奥蒂斯电梯公司 | 电梯的受拉构件 |
CN101578415A (zh) * | 2007-01-08 | 2009-11-11 | 贝卡尔特股份有限公司 | 具有低结构延伸率的缆索 |
CN102459751A (zh) * | 2009-04-20 | 2012-05-16 | 株式会社普利司通 | 橡胶-钢丝复合帘线及使用该帘线的充气子午线轮胎 |
EP2535160A1 (fr) * | 2011-06-17 | 2012-12-19 | NV Bekaert SA | Câble pour scie à fil |
WO2013102531A1 (fr) * | 2012-01-05 | 2013-07-11 | Nv Bekaert Sa | Câble de levage et élévateur comprenant le câble |
-
2013
- 2013-12-30 CN CN201390001267.1U patent/CN206109854U/zh not_active Expired - Lifetime
- 2013-12-30 WO PCT/CN2013/090862 patent/WO2015100528A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1370251A (zh) * | 1999-08-26 | 2002-09-18 | 奥蒂斯电梯公司 | 电梯的受拉构件 |
CN101578415A (zh) * | 2007-01-08 | 2009-11-11 | 贝卡尔特股份有限公司 | 具有低结构延伸率的缆索 |
CN102459751A (zh) * | 2009-04-20 | 2012-05-16 | 株式会社普利司通 | 橡胶-钢丝复合帘线及使用该帘线的充气子午线轮胎 |
EP2535160A1 (fr) * | 2011-06-17 | 2012-12-19 | NV Bekaert SA | Câble pour scie à fil |
WO2013102531A1 (fr) * | 2012-01-05 | 2013-07-11 | Nv Bekaert Sa | Câble de levage et élévateur comprenant le câble |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022031740A1 (fr) * | 2020-08-03 | 2022-02-10 | Fort Wayne Metals Research Products Corp | Fil à haute résistance |
Also Published As
Publication number | Publication date |
---|---|
CN206109854U (zh) | 2017-04-19 |
WO2015100528A8 (fr) | 2015-08-13 |
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