WO2022168314A1 - エレベーターのシーブおよびエレベーターのロープの巻き掛け方法 - Google Patents
エレベーターのシーブおよびエレベーターのロープの巻き掛け方法 Download PDFInfo
- Publication number
- WO2022168314A1 WO2022168314A1 PCT/JP2021/004598 JP2021004598W WO2022168314A1 WO 2022168314 A1 WO2022168314 A1 WO 2022168314A1 JP 2021004598 W JP2021004598 W JP 2021004598W WO 2022168314 A1 WO2022168314 A1 WO 2022168314A1
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- Prior art keywords
- sheave
- elevator
- ropes
- groove
- depth
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004804 winding Methods 0.000 title abstract description 17
- 238000005259 measurement Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 2
- 238000011900 installation process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 241001494479 Pecora Species 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
Definitions
- the present disclosure relates to an elevator sheave and an elevator rope winding method.
- Patent Document 1 discloses an example of a method for replacing an elevator rope.
- one of the existing ropes is transferred to the redundant sheave groove of the sheave. After that, a new rope is wound around the sheave groove where the sheave is empty. After that, after other existing ropes are replaced with new ropes, the existing ropes that have been moved to extra sheave grooves are removed.
- the number of sheave grooves used during elevator operation is the same as the number of ropes.
- the wear of the sheave grooves accompanying the operation of the elevator may vary depending on the combination of the rope and the sheave grooves due to unbalanced rope tension or the like.
- the sheave of the elevator of Patent Document 1 the same number of sheave grooves as the number of ropes are used, so it is necessary to replace the sheaves or regroove the sheaves in order to equalize the variation in wear of each sheave groove. burden increases.
- the present disclosure relates to solving such problems.
- the present disclosure provides a method for winding an elevator sheave and a rope, which can reduce variations in sheave wear.
- An elevator sheep is a sheave around which a plurality of ropes are wound, and the same number of first sheave grooves as the plurality of ropes are provided on the outer periphery, and the first sheave grooves are provided on the outer periphery and have a depth greater than the first depth.
- a second sheave groove of a greater second depth is provided on the outer periphery.
- a method for winding a rope for an elevator is a sheave provided with a plurality of sheave grooves in a number larger than the plurality of ropes on an outer periphery around which a plurality of ropes are wound, wherein the depth of each of the plurality of sheave grooves is increased.
- FIG. 1 is a configuration diagram of an elevator according to Embodiment 1;
- FIG. 2 is an enlarged view of a main portion of the drive sheave according to Embodiment 1;
- FIG. FIG. 4 is a diagram showing an example of the relationship between wear and usage period in the drive sheave according to Embodiment 1;
- 2 is an enlarged view of a main portion of the drive sheave according to Embodiment 1;
- FIG. 2 is an enlarged view of a main portion of the drive sheave according to Embodiment 1;
- FIG. 2 is an enlarged view of a main portion of the drive sheave according to Embodiment 1;
- FIG. 1 is a configuration diagram of an elevator 1 according to Embodiment 1. As shown in FIG. 1
- the elevator 1 is applied, for example, to a building with multiple floors.
- a hoistway 2 for an elevator 1 is provided in a building.
- the hoistway 2 is a vertically elongated space that spans multiple floors.
- the elevator 1 comprises a hoisting machine 3, a deflection wheel 4, a plurality of main ropes 5, a car 6 and a counterweight 7.
- the hoisting machine 3 is arranged, for example, above or below the hoistway 2 .
- the hoist 3 may be arranged in the machine room.
- the hoist 3 has a motor 8 and a drive sheave 9 .
- the motor 8 is a device that generates driving force.
- the drive sheave 9 is a sheave rotated by the driving force generated by the motor 8 .
- Drive sheave 9 is an example of a sheave for elevator 1 .
- a deflecting wheel 4 is arranged close to the drive sheave 9 .
- Deflector wheel 4 is another example of a sheave for elevator 1 .
- Each main rope 5 is wound around the outer circumference of the driving sheave 9 and the outer circumference of the deflector wheel 4 .
- a plurality of main ropes 5 support the load of car 6 on one side of drive sheave 9 .
- a plurality of main ropes 5 carry the load of the counterweight 7 on the other side of the drive sheave 9 .
- the roping method for supporting the load of the car 6 and the counterweight 7 with the plurality of main ropes 5 is not limited to the roping method shown in FIG.
- Main rope 5 is an example of a rope for elevator 1 .
- the car 6 is a device that transports users of the elevator 1 between multiple floors by traveling vertically in the hoistway 2 .
- the car 6 runs vertically in conjunction with the plurality of main ropes 5 that move as the drive sheave 9 rotates.
- the balance weight 7 is a device that balances the load applied to both sides of the drive sheave 9 with the car 6 .
- the counterweight 7 travels in the opposite direction of the car 6 in conjunction with the plurality of main ropes 5 that move as the drive sheave 9 rotates.
- FIG. 2 is an enlarged view of a main portion of drive sheave 9 of elevator 1 according to Embodiment 1. As shown in FIG. In FIG. 2 a cross-section of the circumference of the drive sheave 9 is shown.
- a plurality of sheave grooves 10 are provided on the outer circumference of the drive sheave 9 .
- a plurality of sieve grooves 10 are provided parallel to each other.
- the shape of each sheave groove 10 is a U-groove with an undercut.
- the shape of each sheave groove 10 is not limited to the shape shown in FIG.
- the shape of each sieve groove 10 may be, for example, a U-groove or a V-groove.
- the number of sheave grooves 10 is greater than the number of main ropes 5 .
- the number of the main ropes 5 is six, seven sheave grooves 10 are provided in the driving sheave 9 .
- the number of main ropes 5 when compared with the number of sheave grooves 10 may be the total number. That is, for example, in an elevator 1 employing a full wrap in which one main rope 5 is wound around a drive sheave 9 twice, the number of sheave grooves 10 is more than twice the actual number of main ropes 5 .
- each of the same number of sheave grooves 10 as the total number of main ropes 5 is called a first sheave groove 10a.
- the depths of the first sheave grooves 10a are the same in the initial state.
- the depth of the first sheave groove 10a in the initial state is called the first depth.
- the depth of the sheave groove 10 represents the position of the inner end of the main rope 5 hooked on the sheave groove 10 in the radial direction of the drive sheave 9 .
- the depth of the sheave groove 10 is, for example, the distance in the radial direction of the drive sheave 9 from the outer surface of the drive sheave 9 to the inner end of the main rope 5 hooked on the sheave groove 10 .
- Each of the sheave grooves 10 other than the first sheave grooves 10a among the plurality of sheave grooves 10 is called a second sheave groove 10b.
- one second sheave groove 10b is provided.
- the second sheave groove 10 b is arranged on the outer circumference of the sheave groove 10 on the outer side in the axial direction.
- the second sheave grooves 10b may be arranged between the first sheave grooves 10a.
- the second sheave groove 10b may be arranged, for example, at the center of the outer circumference of the sheave groove 10 in the axial direction.
- the depth of the second sheave groove 10b in the initial state is called the second depth.
- the second depth is deeper than the first depth.
- the sheave groove 10 and the main rope 5 wear out as the usage period elapses, it is planned to replace the main rope 5 once or more times when a preset usage period elapses.
- the second depth is deeper than the first depth by the average wear amount of the sheave groove 10 around which the main rope 5 is hung until the first replacement of the main rope 5 is planned.
- FIG. 2 the groove shape of the first sheave groove 10a in the initial state is shown superimposed on the second sheave groove 10b by a dashed line.
- FIG. 3 is a diagram showing an example of the relationship between wear and usage period of the drive sheave 9 according to the first embodiment.
- the horizontal axis of FIG. 3 represents the usage period of the drive sheave 9 .
- the vertical axis in FIG. 3 represents the amount of wear of the sheave groove 10 .
- the period of use is the period during which elevator 1 is in use from the start of operation.
- the period of use corresponds to the operating time in the elevator 1, or the distance traveled by the car 6 of the elevator 1, or the like.
- the amount of wear of the sheave groove 10 is the amount of change in the depth of the sheave groove 10 from the initial state.
- the amount of wear of the sheave groove 10 increases as the period of use increases.
- the amount of wear of each sheave groove 10 may vary depending on the sheave groove 10 due to unbalanced rope tension, etc., but the average wear amount, which is the amount of wear of the average sheave groove 10, is monotonous according to the period of use. increase to In this example, the average wear amount is proportional to the period of use.
- the relationship between the average amount of wear and the period of use can be estimated, for example, based on past measured values of elevators 1 of similar models. Therefore, the average amount of wear from when the elevator 1 starts operating to when the first replacement is planned can be estimated before the elevator 1 starts operating.
- FIG. 4 and 5 are enlarged views of main parts of the drive sheave 9 according to the first embodiment.
- FIGS. 4 and 5 a cross-section of the circumference of the drive sheave 9 is shown.
- the winding method in the replacement work of the main rope 5 will be described.
- the number of main ropes 5 is six.
- Seven sheave grooves 10 are provided in the drive sheave 9 .
- six sheave grooves 10 are first depth first sheave grooves 10a.
- One of the seven sheave grooves 10 is the second depth second sheave groove 10b.
- FIG 4 shows the state of the drive sheave 9 when the elevator 1 starts operating.
- the six main ropes 5 are hung one by one on the six first sheave grooves 10a.
- the main rope 5 is not hung in the second sheave groove 10b. With the main rope 5 and drive sheave 9 in this state, the elevator 1 is used from the start of operation until the first replacement is planned.
- FIG. 5 shows the state of the drive sheave 9 at the time of the initial replacement plan.
- the replacement work of the main rope 5 is performed.
- a winding method included in the replacement work includes a measurement process, a selection process, and an installation process. The worker who performs the replacement work sequentially performs these processes.
- the worker measures the depth of each sheave groove 10 of the drive sheave 9 .
- the worker measures the dimensions of each sheave groove 10 to measure the depth of the sheave groove 10 .
- the operator measures the distance in the radial direction of the drive sheave 9 from the outer surface of the drive sheave 9 to the outer end of the main rope 5 hooked on each sheave groove 10, and measures the length of the main rope 5.
- the depth of the sheave groove 10 may be measured based on the diameter. The operator may measure the depth of the sheave groove 10 by taking a mold of the portion of the sheave groove 10 where the main rope 5 is not hung.
- the depth of the sheave groove 10 is known. At this time, the measurement of the depth of the sheave groove 10 may be omitted. Also, the worker may perform the measurement process after removing the plurality of existing main ropes 5 wound around the drive sheave 9 .
- the worker selects the sheave groove 10 around which the newly installed rope is to be wound, from among the plurality of sheave grooves 10 including the first sheave groove 10a and the second sheave groove 10b of the drive sheave 9.
- the worker selects the sheave groove 10 around which the newly installed rope is to be wound, from among the seven sheave grooves 10 of the drive sheave 9 .
- the worker selects the sheave groove 10 around which the new rope is to be wound in descending order of depth measured in the measurement process. Since the main ropes 5 are hooked one by one to the sheave grooves 10, the worker selects six sheave grooves 10 of the same number as the main ropes 5. ⁇ For comparison, in FIG.
- the groove shape of the first sheave groove 10a in the initial state is shown superimposed on each sheave groove 10 with a dashed line.
- the third sheave groove 10 from the left in the drawing is the deepest due to wear, six sheave grooves 10 other than this sheave groove 10 are selected.
- the second sheave groove 10b is the deepest sheave groove 10 even when planning the first replacement, the sheave grooves 10 other than the deepest sheave groove 10 are selected in the selection process.
- the worker winds the newly installed main ropes 5 one by one on the sheave grooves 10 selected in the selection process.
- the operation of winding the newly installed main ropes 5 may be performed simultaneously for a plurality of newly installed main ropes 5 .
- the newly installed main ropes 5 are wound one by one on the sheave grooves 10 selected in the selection process.
- the winding method of the main rope 5 is implemented.
- the six newly installed main ropes 5 are hung one by one on the six sheave grooves 10 selected in the selection process.
- the main rope 5 is not hung in the third sheave groove 10 from the left in the drawing which was not selected in the selection process.
- the elevator 1 is used until the next scheduled replacement.
- the replacement work of the main rope 5 will be carried out in the same way when planning the next and subsequent replacements.
- the third sheave groove 10 from the left in the drawing has not been worn since the first replacement, so there is a possibility that the other sheave grooves 10 have become the deepest due to wear.
- the sheave grooves 10 other than the deepest sheave groove 10 are selected in the selection step.
- the sheave grooves 10 other than the deepest sheave groove 10 are selected in the selection process. .
- the winding method of Embodiment 1 can be applied to the work of replacing the main rope 5 other than the work of replacing the main rope 5 .
- the winding method may be applied, for example, to maintenance and inspection work in which the existing main rope 5 is once removed and the existing main rope 5 is wound again.
- the winding method of the first embodiment may be applied to winding the main rope 5 around a sheave such as the warping wheel 4 .
- the drive sheave 9 according to Embodiment 1 is a sheave around which a plurality of main ropes 5 are wound.
- the same number of first sheave grooves 10a of the first depth as the plurality of main ropes 5 are provided on the outer circumference.
- a second sheave groove 10b having a second depth deeper than the first depth is provided on the outer periphery.
- the winding method of the main rope 5 of the elevator 1 according to Embodiment 1 includes a measurement process, a selection process, and an installation process.
- the measuring step is a step of measuring the depth of each sieve groove 10 in the drive sheave 9 provided with a plurality of sieve grooves 10 .
- the number of sheave grooves 10 of drive sheave 9 is greater than the number of multiple ropes wound around the outer periphery.
- the selection step is a step of selecting the sheave grooves 10 around which the plurality of main ropes 5 are wound in the same number as the number of the plurality of ropes in descending order of depth measured in the measurement step.
- the installation process is a process in which a plurality of main ropes 5 are wound one by one around each of the sheave grooves 10 selected in the selection process.
- the amount of wear of each sheave groove 10 may vary for each sheave groove 10 due to imbalance in rope tension or the like. Variation in the amount of wear of the sheave grooves 10 can cause vibration of the car 6 due to the occurrence of rope surge. Variation in the amount of wear of the sheave grooves 10 can be a factor in shortening the life of the rope. In addition, variations in the wear amount of the sheave grooves 10 increase the imbalance of the rope tension.
- the main rope 5 can be wound except for the sheave grooves 10 that are the most worn, the amount of wear of the sheave grooves 10 is averaged, and variations are less likely to occur.
- the amount of wear of the sheave groove 10 is less likely to vary, the frequency of work such as replacement or regrooving of the drive sheave 9 is reduced, thereby reducing the burden of maintenance.
- the second depth is deeper than the first depth by the average amount of wear of the first sheave grooves 10a until the initial replacement of the plurality of main ropes 5 is planned.
- the average value of the amount of wear of the sheave groove 10 around which the main rope 5 is wound becomes closer to the average amount of wear. Therefore, variations in the sheave grooves 10 are less likely to occur.
- the sheave according to the present disclosure can be applied to elevators.
- the winding method according to the present disclosure can be applied to elevator ropes.
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
Description
図1は、実施の形態1に係るエレベーター1の構成図である。
図2において、駆動シーブ9の外周の断面が示される。
図3は、実施の形態1に係る駆動シーブ9における摩耗および使用期間の関係の例を示す図である。
図3の横軸は、駆動シーブ9の使用期間を表す。図3の縦軸は、シーブ溝10の摩耗の量を表す。
図4および図5は、実施の形態1に係る駆動シーブ9の要部拡大図である。
図4および図5において、駆動シーブ9の外周の断面が示される。この例において、主ロープ5の交換作業における巻き掛け方法が説明される。この例のエレベーター1において、主ロープ5の本数は6本である。駆動シーブ9において、7本のシーブ溝10が設けられる。7本のシーブ溝10のうち、6本のシーブ溝10が第1深さの第1シーブ溝10aである。7本のシーブ溝10のうち、1本のシーブ溝10が第2深さの第2シーブ溝10bである。
また、実施の形態1に係るエレベーター1の主ロープ5の巻き掛け方法は、測定工程と、選択工程と、設置工程と、を備える。測定工程は、複数のシーブ溝10が設けられた駆動シーブ9において、各々のシーブ溝10の深さを測定する工程である。駆動シーブ9のシーブ溝10の数は、外周に巻き掛けられる複数のロープの数より多い。選択工程は、複数の主ロープ5が巻き掛けられるシーブ溝10を、測定工程において測定された深さが浅い順に複数のロープの本数と同数選択する工程である。設置工程は、選択工程において選択されたシーブ溝10の各々に複数の主ロープ5が1本ずつ巻き掛けられた状態にする工程である。
Claims (3)
- 複数のロープが外周に巻き掛けられるシーブであり、
前記複数のロープと同数の、第1深さの第1シーブ溝が外周に設けられ、
前記第1深さより深い第2深さの第2シーブ溝が外周に設けられる
エレベーターのシーブ。 - 前記第2深さは、前記第1深さより、前記複数のロープの初回の交換計画時までの前記第1シーブ溝の平均摩耗量だけ深い
請求項1に記載のエレベーターのシーブ。 - 複数のロープが巻き掛けられる外周に前記複数のロープより多い数の複数のシーブ溝が設けられたシーブにおいて、前記複数のシーブ溝の各々の深さを測定する測定工程と、
前記複数のロープが巻き掛けられるシーブ溝を、前記測定工程において測定された深さが浅い順に前記複数のロープの本数と同数選択する選択工程と、
前記選択工程において選択されたシーブ溝の各々に前記複数のロープが1本ずつ巻き掛けられた状態にする設置工程と、
を備えるエレベーターのロープの巻き掛け方法。
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JP2022579299A JP7294552B2 (ja) | 2021-02-08 | 2021-02-08 | エレベーターのシーブおよびエレベーターのロープの巻き掛け方法 |
CN202180093038.6A CN116848057A (zh) | 2021-02-08 | 2021-02-08 | 电梯的绳轮以及电梯的绳索的卷绕方法 |
PCT/JP2021/004598 WO2022168314A1 (ja) | 2021-02-08 | 2021-02-08 | エレベーターのシーブおよびエレベーターのロープの巻き掛け方法 |
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