KR20130031263A - Elevator rope - Google Patents

Abstract

In an elevator device, a car is suspended in a hoistway by an elevator rope. An elevator rope has a rope body and an outer layer covering made of resin coated on the outer circumference of the rope body. Inspection result information corresponding to the position of the inspection performed along the rope length direction at the time of manufacture is given to the surface of an outer layer coating body by predetermined pitch.

Description

Elevator rope {ELEVATOR ROPE}

The present invention relates to an elevator rope whose outer circumference is covered by a resin outer layer covering.

In conventional elevator ropes, in most cases, abnormalities and damages can be visually confirmed from the appearance of the ropes, and thus it is possible to perform some inspection before actually using the ropes. On the other hand, in the elevator rope whose outer periphery was coat | covered with the resin coating body, the thickness of the coating | cover and the presence or absence of the internal disconnection were not visually confirmed.

Moreover, in the conventional fiber rope for construction, a synthetic resin coating layer is provided on the outer periphery of the fiber rope main body, and the production or sales time is printed on the surface of this synthetic resin coating layer at predetermined pitches (see Patent Document 1, for example).

[Patent Document 1] Japanese Utility Model Registration No. 3092239

In the conventional resin coating type elevator rope as described above, even if the thickness of the coating and the presence or absence of internal disconnection are inspected at the time of manufacture, if the abnormal product is released by mistake, Since it is difficult to find by eye, abnormality could not be detected if all the ropes were examined over the entire length at the time of maintenance inspection, or if the disconnection detection device which detects the internal disconnection was installed. In addition, even if the production time is printed on the coating, the life of the normal rope can be estimated.However, if the wrong product is released by mistake, if the maintenance is not performed or the disconnection detection device is not installed, It could not be detected.

This invention is made | formed in order to solve the above subjects, and an object of this invention is to obtain the elevator rope which can be visually confirmed for every part easily even after shipment of the inspection result at the time of manufacture.

The rope for an elevator according to the present invention includes a rope body and an outer layer covering made of resin coated on the outer circumference of the rope body, and the position of the inspection performed along the rope length direction at the time of manufacture on the surface of the outer layer covering. The inspection result information corresponding to the above is given at a predetermined pitch.

In the elevator rope of the present invention, since the inspection result information corresponding to the position of the inspection carried out along the rope length direction at the time of manufacture is given to the surface of the outer layer coating body at a predetermined pitch, the inspection result at the time of manufacture is shipped. Afterwards, each part can be easily visually checked.

1 is a side view showing an elevator rope according to Embodiment 1 of the present invention.
2 is a cross-sectional view of the elevator rope of FIG.
It is a side view which shows the elevator rope by Embodiment 2 of this invention.
It is a side view which shows an example of the elevator apparatus to which the elevator rope of Embodiment 1 or 2 is applied.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

Embodiment 1

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows the elevator rope by Embodiment 1 of this invention, and FIG. 2 is sectional drawing of the elevator rope of FIG. In the figure, one steel core strand 1 is arranged at the center of the elevator rope. The resin core strand coating body 2 is provided in the outer periphery of the core strand 1. On the outer periphery of the core strand covering body 2, a plurality of core rope strands 3 of steel are twisted together.

The resin core rope coating body 5 is provided in the outer periphery of the core rope strand assembly 4 and the core strand coating body 2 which consist of eight core rope strands 3. The core rope 6 is comprised by the core strand 1, the core strand coating body 2, the core rope strand 3, and the core rope coating body 5. As shown in FIG.

On the outer circumference of the core rope covering 5, a plurality of steel outer layer strands 7 (here 20) are twisted together. The rope main body 8 is comprised by the core rope 6 and the outer layer strand 7. The outer layer coating body 9 made of resin is provided on the outer circumference of the rope body 8. The outer layer strands 7 and the outer layer covering 9 are bonded by an adhesive.

All strands, including the core strand 1, the core rope strand 3 and the outer layer strand 7, are compressed (baked) from the outer periphery by dies at the time of manufacture, and the cross-sectional shape of their strands is deformed. It is mad.

The core strand 1 and the core rope strand 3 have a three-layer structure in which two strands of strands are bundled on the outer periphery of the center strand. Moreover, the cross-sectional structure of the core strand 1 and the core rope strand 3 is a seal type. In addition, the twist lengths of the strands of the two layers of the core strand 1 and the core rope strand 3 are the same. That is, the core strand 1 and the core rope strand 3 are comprised by parallel twist. The outer layer strand 7 is a two-layer structure in which a single layer of strands is bundled on the outer circumference of the center element strand.

Since the material of the core strand covering body 2 and the core rope covering body 5 needs to maintain the pressure from the core rope strand 3 and the outer layer strand 7, for example, polyethylene, a polypropylene, etc., Resin which has a certain hardness is used. In addition, the core strand coating body 2 and the core rope coating body 5 are comprised by resin crosslinked by mixing a crosslinking agent.

In addition, the core strand coating member 2 and the core rope coating member 5 preferably have a low coefficient of friction in order to increase the flexibility as an elevator rope and to reduce the loss generated when bent by the sheave. .

In this manner, the material of the core strand covering body 2 and the core rope covering body 5 is preferably harder than the material of the outer layer covering body 9 and has a lower coefficient of friction for the same metal material. In addition, since the core strand covering body 2 and the core rope covering body 5 slip between the core strand 1, the core rope strand 3, and the outer layer strand 7, it is preferable that the core strand covering body 2 and the core rope covering body 5 have excellent wear resistance. Do.

Since the outer layer covering 9 needs to ensure the traction capability with the sheave, the friction coefficient with respect to the sheave is 0.2 or more, and is comprised by resin which has sufficient abrasion resistance, for example, polyurethane. In addition, the outer layer strands 7 are made of resin crosslinked by incorporating a crosslinking agent.

It is preferable that the core strand cladding body 2 and the core rope cladding body 5 are sandwiched between adjacent core rope strands 3 and are in contact with each other, as shown in FIG. Do. In addition, even when the core rope coating body 5 and the outer layer coating body 9 are in a state where tension is applied at the time of use, as shown in FIG. Do.

On the surface of the outer layer covering 9, inspection result information 31 corresponding to the position of the inspection conducted at the time of manufacture and position information 32 in the rope longitudinal direction are provided at a predetermined pitch. The inspection result information 31 and the position information 32 are printed on the outer layer covering 9 using, for example, a printer or a laser marker.

The inspection at the time of manufacture is performed after coating | covering the outer layer coating body 9 in a manufacturing process, or in the inspection process different from a manufacturing process. In addition, the inspection at the time of manufacture is performed continuously or at predetermined intervals along the rope longitudinal direction.

The contents of the inspection include, for example, rope diameter inspection by a laser external diameter measuring instrument, coating thickness inspection by an ultrasonic sensor or an eddy current sensor, and disconnection inspection by a leaky magnetic rope tester.

The results of each inspection are recorded separately in relation to the batch number and the position in the longitudinal direction, and the outer covering 9 is given a comprehensive judgment result of all the inspections. That is, if there is no abnormality in all inspection results, "OK" is printed, and if one is abnormal, "NG" is printed.

Moreover, generally, the rope for elevators is manufactured in 2000 mm-6000 m in length, and is cut to the required length according to the elevator apparatus used. When the inspection result information 31 is "NG", the elevator rope is cut away from the portion and commercialized. Moreover, depending on the inspection item and range in which abnormality was detected, the production of the whole elevator rope may be suspended.

As the positional information 32, the length from the end at the time of manufacture (before cutting), that is, the manufacturing length, is given to the outer layer covering 9. In the example of FIG. 1, manufacturing length is provided for every 0.1 m.

The inspection result information 31 and the positional information 32 are provided at the same position in the circumferential direction of the outer layer covering 9. That is, the inspection result information 31 and the positional information 32 are provided on a straight line parallel to the axis of the elevator rope.

In such an elevator rope, since the inspection result information 31 is provided on the surface of the outer layer covering 9 at a predetermined pitch, the inspection result at the time of manufacture can be easily visually confirmed for each part even after shipping. Therefore, it is possible to recheck the inspection result from the appearance of the elevator rope not only before shipment but also after the product is released, at the time of inspection before delivery or at the time of installation of the elevator apparatus. For this reason, even if the elevator rope containing the part from which the abnormality was detected was released by mistake for some reason, the elevator rope can be found easily.

In addition, by including the positional information 32 together with the inspection result information 31, it is easy to check the inspection data and the real thing. In addition, when an abnormal point or a part which requires | requires a test | inspection continuously arises at the time of maintenance inspection of the elevator rope in use, it can immediately grasp | ascertain where the position is in the elevator rope as a numerical value. Moreover, in the case of cutting the elevator rope to the required length, it is not necessary to use a special measuring device separately.

When the car stops at the position where the car stops, for example, by recording in advance which part of the elevator rope is located at the display position provided on the hoisting machine, the hoisting machine can be manually operated to perform rescue operation. At this time, the car can be moved to the implantation position with high precision.

Further, by providing the inspection result information 31 and the positional information 32 in a straight line and reducing the printing pitch to some extent, the twisted state of the elevator rope can be confirmed when the car and the counterweight are suspended.

Here, it is preferable that the twist pitch of the outer layer strand 7 is less than 2 pitches also for the confirmation of the twist. That is, it is preferable to make the pitch as short as possible in the form of a continuous line of printing, and to confirm the twist. However, considering the length of printing, it is often difficult to be within one pitch. On the contrary, when the pitch is three pitches or more, it becomes difficult to determine whether the twist of the printing is caused by the rotation of the elevator rope or by the tightening or unwinding of the twist.

Usually, one pitch of the twist of the outer layer strand 7 is about 6.5 cases of the diameter of an elevator rope. For example, if the diameter of the elevator rope is 12 mm, one pitch of twist is about 70 to 80 mm, and two pitches of twist are about 140 to 160 mm. Therefore, it can be said that the printing pitch of 100 mm shown in FIG. 1 exists in a preferable range.

In the elevator rope having the outer layer covering body 9, the friction coefficient between the outer layer covering body 9 and the driving sheave is large, and the elevator rope is less likely to slip against the driving sheave. For this reason, it is unlikely that the inspection result information 31 and the positional information 32 will be lost due to wear. However, in the case where printing disappears during use due to an operating state or the like, it is preferable to deepen the print depth of the inspection result information 31 and the positional information 32 using a laser marker or the like.

In addition, since only one core strand 1 is used in the elevator rope as described above, it is difficult to deform when tension is applied at the time of use and when a load is applied from the core rope strand 3 to the core strand 1. In addition, the cross-sectional shape of the entire elevator rope can be stabilized, and the process of twisting the strands together can be reduced, thereby facilitating manufacture. In addition, since the core rope strands 3 are not twisted directly to the outer periphery of the core strand 1 but to each other on the outer periphery of the core strand covering body 2, it is difficult to deform the cross-sectional shape of the core rope 6. This makes it possible to stabilize the cross-sectional shape of the entire elevator rope as well.

In addition, since all strands including the core strand 1, the core rope strand 3, and the outer layer strands 7 do not come into direct contact with other strands, wear damage caused by the contact between the strands is prevented, thereby preventing the elevator rope. Long life can be achieved.

Furthermore, in order to generate traction between the sheave and the outer layer covering body 9, it is necessary to adhere to the outer layer strands 7, and before bonding the outer layer covering body 9 to the outer layer strands 7, It is necessary to sufficiently wash the contaminants and the oil adhering to each other at the time of manufacture of the outer layer strands 7. At this time, if the structure of the outer layer strands 7 is complicated, it cannot be sufficiently washed to the inside of the outer layer strands 7. On the other hand, in Embodiment 1, by making the outer strand 7 into the two-layer structure, making the core strand 1 and the core rope strand 3 into a three-layer structure, the outer layer strand 7 is ensured sufficient strength. ) Can be sufficiently and easily washed, and the outer layer coating body 9 can be firmly adhered to the outer layer strands 7.

In addition, since the core strand covering body 2 and the core rope covering body 5 are made of a crosslinked resin material, durability is increased against use in a high temperature environment or temperature rise due to continuous action of bending. The long life can be achieved.

Moreover, since the outer layer coating body 9 is also comprised by the crosslinked resin material, durability can be raised and life can be extended with respect to the use in a high temperature environment, or the temperature rise by continuous acting of bending. . In addition, the decrease in strength can be prevented against temperature rise due to slip between the sheave and the elevator rope during emergency braking, and sufficient deceleration performance can be maintained.

Embodiment 2 Fig.

Next, FIG. 3 is a side view which shows the elevator rope by Embodiment 2 of this invention. In the figure, in addition to the inspection result information 31 and the positional information 32, the manufacturing information 33 is written on the surface of the outer layer covering 9. As the manufacturing information 33, a manufacturer name, a serial number, a production date and time, etc. are mentioned.

The manufacturing information 33 is printed at the same pitch as the inspection result information 31 and the positional information 32 in the rope longitudinal direction. The manufacturing information 33 is moved to a position different from the inspection result information 31 and the positional information 32 in the circumferential direction of the outer layer covering 9 and printed. The other configuration is the same as in the first embodiment.

In such an elevator rope, since the manufacturing information 33 is provided to the outer layer coating body 9 at a predetermined pitch in the rope length direction, the information on the production is obtained by the spot itself without providing another data plate. You can check with

In addition, the cross-sectional structure of the elevator rope of this invention is not limited to the structure of FIG. For example, the structure which does not perform mold release processing to the core strand 1, the structure which reduced the number of the core rope strand 3 and the outer layer strand 7, respectively (for example, core rope strands: 6 pieces, outer layer strands: 16) Or a two-layer structure in which the core rope strand 3 and the core rope covering 5 are omitted.

Moreover, in Embodiment 1, 2, although the elevator rope of the circular cross section was shown, the elevator rope in this invention is extensive, and includes a rope with a flat cross-sectional shape, ie, a belt.

In addition, in Embodiment 1, 2, although the comprehensive result of all the test | inspection was given to the outer layer coating body 9 as test | inspection result information 31, even if the test result information 31 can know the result for every test | inspection. do. In this case, when the inspection results are coded and displayed in a predetermined order, the inspection result information 31 can be displayed compactly. For example, the result of the rope diameter test, the coating thickness test, and the disconnection test mentioned above can be represented by three digits, "0" if there is no abnormality and "1" if there is an abnormality. Moreover, the presence or absence of the above can also be shown in order of symbols, such as "(circle)" or "x".

4 is a side view which shows an example of the elevator apparatus to which the elevator rope of Embodiment 1 or 2 is applied. In the figure, a machine room 12 is provided at the upper part of the hoistway 11. The machine table 13 is provided in the machine room 12. On the machine table 13, a traction machine 14 is supported. The hoisting machine 14 has a drive sheave 15 and a hoisting machine main body 16. The traction machine main body 16 has a traction machine motor for rotating the drive sheave 15 and a traction machine brake for braking the rotation of the drive sheave 15. [

A deflection sheave 17 is mounted on the machine table 13. The drive sheave 15 and the deflecting sheave 17 are wound with a plurality of elevator ropes 18 as suspension means. The deflecting sheave 17 is wound around the counterweight 10 side rather than the driving sheave 15 of the elevator rope 18.

At one end of the elevator rope (18), the elevator car (19) is suspended. That is, the elevator car 19 is suspended in the hoistway 11 by the elevator rope 18 at one side of the driving sheave 15. [ The balance rope 20 is suspended from the other end of the elevator rope 18. That is, the weight balance 20 is suspended by the elevator rope 18 from the other side of the drive sheave 15. [

In the hoistway 11, a pair of car guide rails 21 for guiding the lifting and lowering of the car 19 and a pair of counterweight guide rails 22 for guiding the lifting and lowering of the counterweight 20 are provided. The car 19 is equipped with an emergency stop device 23 which engages with the car guide rail 21 and emergency stops the car 19.

In addition, the type of the elevator apparatus to which the elevator rope of this invention is applied is not limited to the type of FIG. For example, the present invention can be applied to an elevator without a machine room, an elevator apparatus of a 2: 1 roping system, an elevator apparatus of a multicar system, or a double deck elevator.

The elevator rope of the present invention can also be applied to ropes other than ropes for hanging the car 19, for example, a compensating rope, a governor rope, or the like.

Claims (3)

In the elevator rope provided with a rope body and a resin outer layer coating member coated on the outer circumference of the rope body,
An elevator rope, characterized in that the surface of the outer layer covering is provided with inspection result information corresponding to the position of the inspection carried out along the rope longitudinal direction at the time of manufacture at a predetermined pitch. The method according to claim 1,
An elevator rope, characterized in that the position information in the longitudinal direction of the rope is written together with the inspection result information on the surface of the outer layer covering body. The method according to claim 1,
The rope body includes a plurality of strands (strand) twisted to each other on the outer circumference,
An elevator rope characterized in that the pitch giving the test result information is within 2 pitches of the twist pitch of the strand.

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