JP2009234791A - Rope for elevator and belt for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly-reliable rope or belt capable of maintaining stable traction in all environments for a long period of time by stabilizing a friction coefficient of the rope or belt having a resin coat with respect to slide and improving wear resistance. <P>SOLUTION: The rope includes a tensile body bearing tension applied in a longitudinal direction and the resin coat protecting the tensile body from wear damage, wherein the resin coat has insoluble solid additive particles mixed in resin base material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator rope and an elevator belt, and more particularly, to a resin-coated rope and belt for a main rope or the like that suspends an elevating unit.

  In conventional resin-coated ropes and belts, for example, as shown in Patent Document 1 or Patent Document 2, a coated body that protects a tensile body from abrasion damage is a resin having high wear resistance and high flexibility. It is configured. In this case, since the outer layer resin of the rope or belt is in direct contact with the groove surface of the sheave as the driving force transmitting portion, a large frictional force is generated on the sliding surface due to the adhesion of both. The frictional force is indispensable for driving force transmission, but promotes wear due to sliding, particularly wear of the resin.

  For this reason, it is necessary to appropriately set the friction coefficient on the sliding surface with respect to the conflicting relationship between friction and wear. In the case of an elevator drive system, as shown in Patent Document 3, a groove surface of a sheave (shob) that comes into contact with a rope is appropriately roughened, and a nickel-phosphorus intermetallic compound containing a fluorine compound is electrolessly plated. The friction and wear are optimized. However, although the current resin is relatively stable in the initial stage, the friction coefficient increased and the amount of wear increased rapidly with the operation time of the elevator. I haven't got it.

  Further, in Patent Document 4, in order to achieve high strength per unit cross-sectional area and good frictional contact with the sheave, a plurality of side schenkels are arranged around the coated core schenkel, A plurality of first filler strands having a small diameter in a space surrounded by and a plurality of second filler strands having a small diameter between valleys on the outer side between the side schenkels, and surrounding the side schenkel. A wire rope with a compound sheath is disclosed.

  Patent Document 5 discloses a traction sheave for an elevator that is coated with a urethane resin filled with silica powder, graphite, carbon powder boron nitride powder, potassium titanate fiber or potassium titanate whisker as a high friction material. .

JP 2001-262482 A PCT WO99 / 43885 JP 2007-284237 A Japanese Patent Laid-Open No. 2003-268685 JP 2004-106984 A

  Resin-covered rope or belt that completely separates the role of the resin, that is, a covering body that protects the wear due to sliding between the tensile body, that is, the steel wire, and the driving force transmission section, which bears the tension applied in the longitudinal direction, from the steel wire In order to transmit the driving force to the steel wire, the outer layer resin in contact with the driving force transmitting portion must maintain a predetermined friction coefficient and also have high wear resistance. It is indispensable that the resin for covering the rope or the belt is excellent in achieving the stabilization of the coefficient of friction and being excellent in wear resistance in all environments over a long period of time. In particular, in the case of an elevator drive system, an environment in which lubricating oil adheres to the contact surface between the rope and the sheave is assumed. In this case, the coefficient of friction is the lowest.

  Therefore, the first requirement for the traction characteristics between the two is to ensure the friction coefficient in a state where the oil is adhered to a predetermined value or more. For this reason, a predetermined surface roughness is applied to the sheave groove surface for the purpose of not significantly reducing the friction coefficient even when the lubricating oil adheres. On the other hand, since the surface roughness of the sheave groove surface, that is, the unevenness, accelerates the wear of the outer resin of the rope or belt, the resin needs to have wear characteristics that can overcome the sliding of the unevenness. In order to achieve long-term reliability of resin-coated ropes or belts, the friction coefficient when oil adheres is secured, and the wear on the sheave groove surface with the specified surface roughness is kept to a certain limit. Is required.

  The present invention is a highly reliable rope that can stabilize the friction coefficient against sliding of a rope or belt having a resin coating, improve wear resistance, and maintain long-term stable traction in any environment. Or to provide a belt.

  The rope or belt of the present invention includes a tensile body that bears a tension applied in the longitudinal direction, and a resin coating that protects the tensile body from abrasion damage, and the resin coating is added with an insoluble solid in the resin base material. It is a mixture of product particles.

  According to the present invention, a resin coated rope or belt can be provided with a resin having a stable coefficient of friction for sliding and excellent wear resistance. It becomes possible to realize a resin-coated rope or belt capable of maintaining a good traction.

  The rope or belt of the present invention used for an elevator or other lifting device for moving a moving object such as a person or heavy object to a place with a height difference is formed of a steel wire or the like to support the weight of the moving object. And a resin coating that protects the tensile body from abrasion damage.

  A rope or belt in which the friction coefficient does not drop significantly even when lubricating oil adheres and the resin wear due to sliding is small is obtained by the following means.

  First, in order to prevent a reduction in the friction coefficient when oil adheres, it is necessary to eliminate the oil from a minute gap (friction surface) at the contact portion between the outer layer resin of the rope or belt and the sheave groove surface. Originally, when the outer layer resin of the rope or belt and the sheave groove surface are in contact with each other, the friction coefficient increases because both adhere to each other. Therefore, even if lubricating oil adheres, the oil is removed from the friction surface to make it clean. If it approaches, it becomes possible to ensure the frictional force required for traction. In order to remove oil from the friction surface, it is effective to increase the hardness of the resin and increase the surface pressure generated at the minute contact surface between the two. When the hardness is high, the deformation is small and the resin does not dent, so the contact area is small. As a result, the surface pressure increases.

  Secondly, since resin wear due to sliding occurs due to deformation on the friction surface, first, increase the tensile strength of the resin, and further, avoid deformation of the resin by avoiding direct contact between the resin base material and the sheave groove surface as much as possible. Suppress. As a result, the amount of wear can be reduced. In order to avoid direct contact between the resin base material and the sheave groove surface, another solid material harder than that can be mixed with the resin base material to form a composite material.

  In the above means, increasing the hardness of the resin, increasing the tensile strength of the resin, and mixing the solid material with the resin are not mutually exclusive, so it is possible to implement these means simultaneously. It is. Therefore, if the above-mentioned means are performed at the same time, it is possible to obtain a resin having a high wear resistance without significantly reducing the coefficient of friction even when the lubricating oil adheres.

  Embodiments will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a rope outer layer coating resin showing an embodiment of the present invention. The outer resin 1 of the resin-coated rope or belt includes a resin base material 1a and an insoluble solid additive 1b. In this example, thermoplastic polyurethane was used for the resin base material 1a, and alumina filler was used for the insoluble solid additive 1b. The sheave 2 in contact with the outer layer resin 1 is obtained by providing a sheave plating layer 2b on the surface of a sheave base material 2a. The shape of the insoluble solid additive 1b is such that when the outer layer resin 1 and the sheave 2 slide, the sheave plating layer 2b on the sheave surface is not damaged more than necessary, and the insoluble solid additive 1b is not easily dropped from the resin base material 1a. A spherical shape or its equivalent is desirable.

  Here, the outer layer resin 1 may be called a resin coating.

  When the surface of the sheave 2 is electrolessly plated with a nickel-phosphorus intermetallic compound containing a fluorine compound as the sheave plating layer 2b, the friction coefficient between the outer resin 1 and the sheave plating layer 2b is a fluorine having a very low friction coefficient. Due to the action of the compound, even if unevenness having a surface roughness Ra of about 8 to 9 μm exists in the sieve plating layer 2b, it does not increase. Moreover, even if lubricating oil adheres to these contact surfaces, it is indicated by patent document 3 that it can suppress to the reduction of 1 / 1.2 compared with the time of cleaning.

  However, when the outer layer resin 1 is composed only of the resin base material 1a, the friction coefficient between the two rapidly increases as the sliding progresses, and the amount of wear of the resin increases dramatically accordingly. FIG. 2 shows changes in the coefficient of friction and the amount of wear when a conventional general resin is used. In the case of this figure, the friction coefficient increases rapidly while the sliding distance reaches 60 m, and wear progresses.

  FIG. 3 shows a schematic view of a rotary wear tester. In this figure, the wear characteristics of the outer layer resin 1 were measured by a sliding test performed by applying tension to one end of the resin-coated rope 3 and rotating the sheave 2 installed on the gantry 6. The friction coefficient was calculated from the weight of the weight 4 and the load value of the load cell 5 provided at the other end of the resin-coated rope 3.

  FIG. 4 shows the result of elemental analysis of the surface of the sieve plating layer after sliding with an Auger electron spectrometer. The horizontal axis represents the depth of the sieve plating layer according to the sputtering time, and the vertical axis represents the elemental concentrations of carbon (C), oxygen (O), phosphorus (P), nickel (Ni), and fluorine (F). From this figure, it can be seen that the concentration of carbon and oxygen in the vicinity of the surface of the sieve plating layer is high. This indicates that the resin has been transferred from the rope 3 to the sliding surface of the sheave plating layer 2b.

  That is, the friction coefficient increases as the sliding progresses because the function of the fluorine compound is reduced by the transfer of the resin. Also, traces of resin deformation were observed on the sliding surface of the outer layer resin 1 so as to correspond to the transfer of the resin.

  Therefore, in the first stage, in order to suppress the tendency of the resin wear amount to increase rapidly, first, a resin base having a higher tensile strength σr than that of the prior art is used so that the resin deformation is less likely to occur even if the sliding proceeds. A resin-coated rope 3 was produced from the material 1a. And it compared with the past by the sliding test.

  FIG. 5 is a schematic diagram showing resin deformation caused by sliding. In this figure, when the resin base material 1a and the sieve plating layer 2b are (a) partially in direct contact and (b) sliding, (c) the adhered resin base material 1a is deformed (d). Break.

  Usually, in order for the resin to be deformed by sliding and the deformed portion 7 to break, the fracture resistance value of the resin base material 1a must be exceeded. For this reason, it is considered that a resin having a high fracture resistance, that is, a fracture energy (equal to the product of tensile strength and elongation at break) has a small amount of wear due to sliding.

  Generally, regarding the elongation at break, there is no significant difference as long as the resin material is the same. Therefore, it was considered to increase the fracture energy by increasing the tensile strength σr.

  In this embodiment, the sheave plating layer 2b is provided as the surface member of the sheave 2 from the viewpoint of rust prevention, wear resistance, etc., but the sheave plating layer 2b is not necessarily provided, and the sheave base material 2a is used as the surface member of the sheave 2. It may be exposed as That is, the surface member of the sheave 2 is a metal, resin, ceramics, or the like constituting the sheave base material 2a when there is no sheave plating layer 2b, and when there is the sheave plating layer 2b, the metal, resin, It is a plating material such as ceramics.

  FIG. 6 shows the relationship between the wear amount of the outer layer resin 1 obtained by the sliding test and the tensile strength σr of the resin base material 1a. In this figure, the material of the resin base material 1a is thermoplastic polyurethane. As can be seen from this figure, the amount of wear of the outer layer resin 1 decreases as the tensile strength σr of the resin base material 1a increases. And the tendency changes greatly with the tensile strength σr as a boundary. That is, when the tensile strength σr of the resin base material 1a is less than 25 MPa, the amount of wear of the outer layer resin 1 increases rapidly. Therefore, the tensile strength σr required for the resin base material 1a to suppress the wear is 25 MPa or more. I understand that.

  Here, the tensile strength σr was measured in accordance with JIS K7311 (Testing method for polyurethane-based thermoplastic elastomer).

Furthermore, as a second step, an attempt was made to minimize direct contact between the outer layer resin 1 and the sieve plating layer 2b by mixing the insoluble solid additive 1b with the resin base material 1a. That is, by using a filler-added resin material for the outer layer resin 1, low wear characteristics were achieved by the following two actions.
(1) A gap is present between the resin base material 1a and the sieve plating layer 2b, and direct contact between the outer resin 1 and the sieve plating layer 2b is minimized.
(2) By scratching the sheave plating layer 2b, the fluorine compound contained in the sheave plating layer 2b is transferred to the outer layer resin 1, and friction and wear are suppressed by the transferred fluorine compound.

  In order to reduce the amount of wear by the action (1), at least the insoluble solid additive 1b harder than the resin base material 1a is mixed, and the particle size and content of the insoluble solid additive 1b are increased. It is important to protect the base material 1a. Further, regarding the shape, it is important that the sheave plating layer 2b is not easily damaged and is not easily detached from the resin base material 1a.

  On the other hand, in order to realize a reduction in the amount of wear by the action (2), at least the insoluble solid additive 1b harder than the sieve plating layer 2b is necessary. However, since the sieve plating layer 2b is damaged, the transfer amount of the fluorine compound is It is important to keep it to the minimum necessary.

  In addition, since the transfer of the fluorine compound to the outer layer resin 1 is not sufficient in the initial stage of operation, it is possible to realize stable low wear characteristics for a long time by the action (1) in the initial stage of sliding and the action (2) in the subsequent stage And

  Therefore, for the insoluble solid additive 1b, an appropriate material satisfying the actions (1) and (2) is selected for each parameter of (a) material, (b) size, (c) shape, and (d) content rate. There is a need to.

  FIG. 7 is a diagram showing the friction and wear characteristics of the outer layer resin when a filler-added resin material is used. FIG. 8 is a graph showing the relationship between the wear amount of the outer layer resin and the hardness of the insoluble solid additive. These are examples of examination results on the degree of influence on the material, size and shape of the insoluble solid additive 1b. The sliding test is performed using the outer layer resin 1 in which talc, magnesium hydroxide, calcium carbonate, and alumina fillers are mixed, and the friction coefficient between each resin-coated rope 3 and the sheave 2 and the wear of the outer layer resin 1. The characteristics were investigated.

  As a result, as shown in FIG. 7 (a), in the range of the insoluble solid additive 1b shown in the figure, calcium carbonate, then talc and magnesium hydroxide are equivalent in order from the highest friction coefficient, and alumina. Regarding the tendency of the change in the friction coefficient with sliding, although the effect of mixing the filler is seen, calcium carbonate, talc and magnesium hydroxide still tend to increase. On the other hand, the tendency of the change of alumina was different from these, and it was found that the coefficient of friction decreased after the start of sliding, and then kept almost constant.

  The wear characteristics are as shown in FIG. 7 (b). In order to correspond to the change in the friction coefficient, calcium carbonate, talc and magnesium hydroxide are equivalent in order from the larger wear amount, and are alumina. . Alumina showing a low coefficient of friction tends to stop increasing the amount of wear.

  Therefore, in considering the influence of these insoluble solid additives 1b, the hardness of the material characteristics is particularly focused, and the relationship of the wear amount is organized by the hardness of the insoluble solid additives 1b. The graph is shown in FIG. The horizontal axis represents the Mohs hardness, and the vertical axis represents the wear amount of the outer layer resin.

  According to the figure, it was found that the amount of wear due to sliding is large in the case of calcium carbonate which is lower than the hardness of the sieve plating layer 2b and close to the hardness. This is because when the hardness is close on the low side, the sheave plating layer 2b and the insoluble solid additive 1b easily adhere to each other on the sliding surface, so that the insoluble solid additive 1b falls off from the resin base material 1a and the subsequent sliding is performed. It is thought that the amount of wear increases due to movement. On the other hand, regarding the size and shape, as can be seen from the results shown in FIGS. 7 and 8, it can be said that these influences on the wear amount do not exceed the influence of the material, that is, the hardness.

  Therefore, when controlling the coefficient of friction between the resin-coated rope 3 and the sheave 2 and the wear characteristics of the outer layer resin 1, the material of the insoluble solid additive 1b is an important influencing factor. It is considered that the size of the insoluble solid additive 1b may be considered in a range in which the material strength of the resin base material 1a is not lowered, and the shape of the insoluble solid additive 1b may be considered in a range in which the resin base material 1a is not easily dropped.

  In FIG. 9, the elemental analysis result by the Auger electron spectrometer of the outer-layer resin 1 surface of a rope is shown. The insoluble solid additive 1b is a case of alumina. It is the result of having performed elemental analysis about carbon, oxygen, nickel, and fluorine.

  In the case where the insoluble solid additive 1b is made of a material harder than the sieve plating layer 2b such as alumina, as can be seen from the analysis results shown in this figure, the surface of the outer resin 1 after sliding has a fluorine contained in the sieve plating layer 2b. The compound is transcribed. This transfer is considered to produce the low coefficient of friction and low wear characteristics shown in FIG.

  In the range of the insoluble solid additive 1b shown in FIG. 7, in the case of the insoluble solid additive 1b other than alumina, such transfer is not observed, so that the fluorine compound of the sheave plating layer 2b is slid by the outer resin 1 It can be said that the presence of the insoluble solid additive 1b made of a material harder than the sieve plating layer 2b is necessary for the transfer.

  Next, the influence degree about the content rate of the insoluble solid additive 1b was examined. FIG. 10 shows the results of examining the influence of the content ratio on the friction coefficient between the resin-coated rope 3 and the sheave 2 and the wear characteristics of the outer layer resin 1 when an alumina filler is used as the insoluble solid additive 1b. It is a thing. The case where the content rate of the insoluble solid additive 1b is 0.03, 0.09, and 0.21 vol% is shown, which is compared with the case of 0 vol%. As can be seen from this figure, a remarkable effect appears from 0.03 vol% (volume percent). At 0.03 vol% or more, the friction coefficient is almost the same, although there is some difference in the lowering of the friction coefficient at the initial stage of sliding, regardless of the content. Further, the wear amount of the outer layer resin 1 is almost the same at any content rate reflecting the friction coefficient.

  On the other hand, the degree of damage to the plating layer 2b on the sheave surface was also examined for the content of the insoluble solid additive 1b in this test range. The damage evaluation of the sheave plating layer 2b is performed by sliding the resin-coated rope 3 and the sheave 2 for 300 m, measuring the surface roughness of the sheave plating layer 2b, and observing the surface with a scanning electron microscope, and comparing with the state before the sliding. investigated. “After sliding 300 m” corresponds to the state after 20 years of use.

  FIG. 11 is a diagram showing changes in the surface roughness of the sheave plating layer due to sliding. The horizontal axis represents the alumina content, and the vertical axis represents the sheave surface roughness Ra. As shown in the figure, it was found that when the content rate is 0.03 vol%, the fluorine compound can be transferred to the outer layer resin 1 with almost no damage to the sieve plating layer 2b. Moreover, it turned out that the fall of the surface roughness of the sieve plating layer 2b is about 0.5 micrometer until content rate is 0.21 vol%.

  From the above examination results, when the fluorine compound is transferred to the outer layer resin 1 by sliding and the surface roughness of the sieve plating layer 2b is not changed, the content of the insoluble solid additive 1b is 0.03 vol. % To 0.21 vol% is considered an appropriate amount. This is because when the alumina content is 0.21 vol%, the sheave surface roughness Ra can be suppressed to 8.3 μm, and no problem occurs with respect to the coefficient of friction during oil adhesion. Further, from the viewpoint of the reliability of the sheave, it is desired to suppress the wear rate after 20 years of surface irregularities to −5% on the basis of the surface roughness Ra. That is, there is a demand for keeping the sheave surface roughness Ra at 8.3 μm or more. Further, a more desirable range of the content is 0.03 vol% or more and 0.09 vol% or less.

  Furthermore, the friction coefficient between the resin-coated rope 3 and the sheave 2 and the wear of the outer layer resin 1 using the outer layer resin 1 having the same alumina filler content of 0.03 vol% and different tensile strength σr of the resin base material 1a. The characteristics were investigated. FIG. 12 is a graph comparing the friction coefficient and the wear characteristics depending on the tensile strength of the resin base material 1a. In this figure, the case where the tensile strength σr of the resin base material 1a is 19 MPa and the case where it is 34 MPa are compared.

  According to this, it can be seen that even when the alumina filler is contained in an amount of 0.03 vol%, when the tensile strength σr of the resin base material 1a is 19 MPa, the amount of wear of the outer layer resin 1 increases early. In this case, the friction coefficient tends to decrease at the initial stage of sliding, and deformation of the resin base material 1a holding the alumina filler also occurs. Therefore, the alumina filler is removed more than the transfer of the fluorine compound to the outer layer resin 1. It is also thought to be due to deformation of the resin.

  Therefore, in order to reduce the wear of the outer layer resin 1, the insoluble solid additive 1b is mixed, the tensile strength σr is high, and the insoluble solid additive 1b is less likely to drop off or the resin base material 1a is not easily deformed. It is necessary to use

  As described above, the resin base material 1a is made of a resin having a tensile strength σr of 25 MPa or more, and the insoluble solid additive 1b (filler) harder than the sieve plating layer 2b is added, thereby realizing low wear characteristics of the outer layer resin 1. It becomes possible to do.

  On the other hand, it is necessary to verify whether this means has a negative effect on the mechanism that increases the hardness of the resin base material 1a and suppresses the decrease in the friction coefficient when oil adheres.

  FIG. 13 shows the results obtained by using the outer layer resin 1 having a tensile strength σr of about 20 MPa among the sliding test results described in FIG. 6, and shows the friction coefficient when the oil adheres and the hardness of the resin base material 1a. The graph arranged by the relationship of Hr is shown. From this figure, it can be seen that the friction coefficient necessary for the traction of the elevator can be realized by using a resin base material 1a having a resin hardness of 94 (JIS-A scale) or higher.

  Here, the resin hardness was measured according to JIS K7311 (Testing method for polyurethane-based thermoplastic elastomer).

  Therefore, when the tensile strength σr is raised to 25 MPa or more without changing the hardness Hr and the alumina filler is added to the resin base material 1a having a hardness of this value or more, the friction coefficient when the oil adheres is determined. The degree of influence was confirmed. In the sliding test, an outer layer in which the alumina filler content is 0.03, 0.09, and 0.21 vol% in the resin base material 1a having a tensile strength σr of 34 MPa and a hardness Hr of 97 (JIS-A scale), respectively. Resin 1 was manufactured and performed on each resin-coated rope 3.

  FIG. 14 shows the test results. For each alumina filler content, when the temperature is 28 ° C. when the oil is not adhered, the oil is adhered, and the friction coefficient is shown for temperatures 28 ° C. and 50 ° C. As can be seen from this figure, the coefficient of friction during cleaning tends to increase slightly as the alumina filler content increases. However, there is no significant difference in the coefficient of friction when oil is adhered, and the value is almost equivalent to the value in resin hardness 97 (JIS-A scale) in FIG. It can be said that the addition and the increase in the tensile strength σr do not have a negative effect on the mechanism for suppressing the decrease in the coefficient of friction when the oil adheres.

  Therefore, by adding a filler harder than the sieve plating layer 2b to the resin base material 1a having a tensile strength σr of 25 MPa or more and a hardness Hr of 94 (JIS-A scale) or more, the friction coefficient when oil adheres can be reduced. It is possible to realize the resin-coated rope 3 having the outer layer resin 1 which is suppressed and has excellent wear resistance.

  So far, the embodiment in which thermoplastic polyurethane is adopted as the resin base material 1a has been described, but the resin base material 1a is not necessarily limited to thermoplastic polyurethane. As shown below, since the wear amount of the outer layer resin 1 is defined by the tensile strength σr regardless of the material, the tensile strength σr is 25 MPa or more and the hardness Hr is 94 (JIS) even in a polymer elastomer such as olefin or styrene. -A scale) or more, it is possible to realize the resin-coated rope 3 having the outer layer resin 1 that suppresses a decrease in the coefficient of friction when oil adheres and has excellent wear resistance.

  FIG. 15 shows the relationship between the respective wear amounts of thermoplastic polyurethane, olefin elastomer, and styrene elastomer obtained in the pin-on-disk wear test and their tensile strength σr. Here, the pin-on-disk wear test was performed in accordance with JIS K7218 (plastic sliding wear test method). The state of the contact surface in this wear test will be described with reference to FIG. 1. The pin side is the outer layer resin 1, and the disk side is the sheave plating layer 2b.

  As can be seen from FIG. 15, the amount of wear decreases as the tensile strength σr increases. And the tendency changes greatly with the tensile strength σr as a boundary. This change is the same regardless of the type of polymer elastomer. From this, it can be seen that when the tensile strength σr of the resin base material 1a is lower than 25 MPa, the tendency of the amount of wear of the outer layer resin 1 to increase rapidly does not depend on the material.

  Although the rope and belt of the present invention are described as being used for an elevator and other lifting devices, the application is not limited thereto, and the rope and belt can be widely used as a rope and belt for supporting heavy objects.

It is sectional drawing of the contact state of the resin coating body of a rope and the sheave groove surface which shows the Example by this invention. It is a graph showing the friction coefficient and wear characteristic at the time of using the conventional general resin. It is a schematic block diagram of a rotary wear tester. It is an elemental analysis result of the sieve plating layer surface by an Auger electron spectrometer. It is a schematic diagram showing the resin deformation | transformation which arises by sliding. It is a graph which shows the relationship between the abrasion loss of outer layer resin, and the tensile strength of a resin base material. It is a graph which shows a friction coefficient at the time of using an insoluble solid additive, and a wear characteristic. It is a graph which shows the relationship between the abrasion loss of outer layer resin, and the hardness of an insoluble solid additive. It is an elemental analysis result of the outer layer resin surface of a rope by an Auger electron spectrometer. It is a graph which compares the friction coefficient and wear characteristic by an alumina filler content rate. It is a graph which shows the change of the surface roughness of the sieve plating layer by sliding. It is a graph which compares the friction coefficient by the tensile strength of a resin base material, and an abrasion characteristic. It is a graph which shows the relationship between the friction coefficient when oil adheres, and the hardness of a resin base material. It is a graph which compares the friction coefficient by an alumina filler content rate. It is a graph which shows the relationship between the abrasion loss of a polymer elastomer, and tensile strength.

Explanation of symbols

  1: outer layer resin, 1a: resin base material, 1b: insoluble solid additive, 2: sheave, 2a: sheave base material, 2b: plating layer, 3: resin-coated rope, 4: weight, 5: load cell, 6: mount , 7: Resin deformation part.

Claims (18)

  A tensile body having a tensile force applied in the longitudinal direction and a resin coating for protecting the tensile body from abrasion damage, wherein the resin coating is a mixture of insoluble solid additive particles in a resin base material. Elevator rope characterized by being.   The elevator rope according to claim 1, wherein a hardness value of the insoluble solid additive particles is larger than a hardness value of a surface member of the sheave contacting the resin coating.   The elevator rope according to claim 1 or 2, wherein the insoluble solid additive particles are particles selected from one or more of alumina particles, magnesium hydroxide particles, talc particles, and calcium carbonate particles.   The elevator rope according to claim 1 or 2, wherein the insoluble solid additive particles are substantially spherical alumina particles.   The elevator rope according to any one of claims 1 to 4, wherein the resin base material is a polymer elastomer.   The elevator rope according to any one of claims 1 to 4, wherein the resin base material is polyurethane.   The elevator rope according to any one of claims 1 to 6, wherein the resin coating is externally coated with a coating containing 0.03 to 0.21 vol% of the insoluble solid additive particles.   The elevator rope according to any one of claims 1 to 7, wherein the resin base material has a tensile strength of 25 to 40 MPa.   The elevator rope according to any one of claims 1 to 8, wherein the resin base material has a hardness of 94 to 97 on a JIS-A scale.   A tensile body having a tensile force applied in the longitudinal direction and a resin coating for protecting the tensile body from abrasion damage, wherein the resin coating is a mixture of insoluble solid additive particles in a resin base material. An elevator belt characterized by being.   11. The elevator belt according to claim 10, wherein the hardness value of the insoluble solid additive particles is larger than the hardness value of the surface member of the sheave contacting the resin coating.   The elevator belt according to claim 10 or 11, wherein the insoluble solid additive particles are particles selected from one or more of alumina particles, magnesium hydroxide particles, talc particles, and calcium carbonate particles.   The elevator belt according to claim 10 or 11, wherein the insoluble solid additive particles are substantially spherical alumina particles.   The elevator belt according to any one of claims 10 to 13, wherein the resin base material is a polymer elastomer.   The elevator belt according to any one of claims 10 to 13, wherein the resin base material is polyurethane.   The belt for an elevator according to any one of claims 10 to 15, wherein the resin coating is externally coated with a coating containing 0.03 to 0.21 vol% of the insoluble solid additive particles.   The elevator belt according to any one of claims 10 to 16, wherein the resin base material has a tensile strength of 25 to 40 MPa.   The elevator belt according to any one of claims 10 to 17, wherein the resin base material has a hardness of 94 to 97 on a JIS-A scale.

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