WO2009098772A1 - Elevator device - Google Patents
Elevator device Download PDFInfo
- Publication number
- WO2009098772A1 WO2009098772A1 PCT/JP2008/052101 JP2008052101W WO2009098772A1 WO 2009098772 A1 WO2009098772 A1 WO 2009098772A1 JP 2008052101 W JP2008052101 W JP 2008052101W WO 2009098772 A1 WO2009098772 A1 WO 2009098772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheave
- main rope
- slip
- car
- rotation detector
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
Definitions
- This invention relates to a traction type elevator apparatus in which a car and a counterweight are suspended by a main rope.
- an undercut groove having a width smaller than that of the sheave groove is provided at the bottom of the sheave groove provided on the outer peripheral surface of the sheave, which is necessary for the main rope. A sufficient frictional force is secured. Further, when the car is running, a minute slip, that is, creep is generated between the main rope and the sheave due to the tension difference between the main rope and the counterweight side, and the sheave groove is worn. When such wear progresses, slip occurs between the main rope and the sheave, and the sheave groove wear further progresses.
- a rotation detector that generates a signal according to the movement of the main rope is provided, and two rotation detections are performed.
- the slip of the main rope with respect to the sheave is determined by comparing the signals from the cage (see, for example, Patent Document 1).
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator apparatus that can inspect a slip of a main rope with respect to a sheave with a simple configuration.
- the elevator apparatus includes a hoist having a sheave, a main rope wound around the sheave, a car suspended by the main rope on one side of the sheave, and a main rope on the other side of the sheave.
- the counterweight that is suspended by the wheel, the rotation detector that generates a signal corresponding to the rotation of the sheave, and the car reciprocates by a predetermined distance, and the signal from the rotation detector when rising and the rotation when falling
- a slip inspection unit for inspecting a slip between the sheave and the main rope based on the difference from the signal from the detector is provided.
- FIG. 1 It is a block diagram which shows the elevator apparatus by Embodiment 1 of this invention. It is principal part sectional drawing of the sheave of FIG. It is sectional drawing which shows the state which abrasion of the sheave groove
- FIG. 1 is a block diagram showing an elevator apparatus according to Embodiment 1 of the present invention.
- a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed in a hoistway 1.
- the car 4 is moved up and down in the hoistway 1 along the car guide rail 2.
- the counterweight 5 is raised and lowered in the hoistway 1 along the counterweight guide rail 3.
- a machine room 6 is provided in the upper part of the hoistway 1.
- a machine table 7 is installed in the machine room 6.
- a hoisting machine 8 and a deflecting wheel 9 are supported on the machine base 7.
- the hoisting machine 8 includes a hoisting machine main body 10 and a sheave 11.
- the hoisting machine main body 10 includes a motor that rotates the sheave 11 and a brake that brakes the rotation of the sheave 11.
- a plurality of main ropes 12 (only one is shown in the figure) are wound around the sheave 11 and the deflector 9. One end of the main rope 12 is connected to the upper part of the car 4. The other end of the main rope 12 is connected to the upper part of the counterweight 5. The car 4 and the counterweight 5 are suspended in the hoistway 1 by the main rope 12 and are raised and lowered by the hoisting machine 8.
- the hoisting machine 8 is provided with a rotation detector (speed detector) 13 that generates a signal corresponding to the rotation of the sheave 11.
- a rotation detector speed detector
- an encoder that generates a pulse signal corresponding to the rotation of the sheave 11 is used.
- the signal from the rotation detector 13 is input to the elevator control device 14 that controls the traveling of the car 4, that is, the drive of the hoisting machine 8.
- the elevator control device 14 calculates the speed and moving distance of the car 4 based on the signal from the rotation detector 13. Further, the elevator control device 14 is provided with a slip inspection unit 15 that inspects whether or not the main rope 12 slips with respect to the sheave 11.
- the elevator control device 14 includes a computer having a storage unit, an arithmetic processing unit, and a signal input / output unit.
- the function of the slip inspection unit 15 can be realized by a computer, for example.
- FIG. 2 is a cross-sectional view of the main part of the sheave 11 of FIG.
- a plurality of sheave grooves 11 a into which the main rope 12 is inserted are provided on the outer peripheral surface of the sheave 11.
- An undercut groove 11b having a smaller width than the sheave groove 11a is provided at the bottom of the sheave groove 11a.
- the sheave groove 11 a is worn over time due to contact with the main rope 12.
- FIG. 3 is a cross-sectional view showing a state in which wear of the sheave groove 11a of FIG. 2 has progressed.
- FIG. 4 shows a case where the car 4 is rising, and FIG. The case where it is descending is shown.
- the tension on the car 4 side is T1
- the tension on the counterweight 5 side is T2
- the winding angle of the main rope 12 around the sheave 11 is ⁇
- the tension between the main rope 12 and the sheave 11 is If the friction coefficient is ⁇ and the shape factor of the sheave groove 11a is k, When T1> T2, T1 / T2> e ⁇ k ⁇ , When T1 ⁇ T2, T2 / T1> e ⁇ k ⁇ It is designed to be.
- the tension is changed from T2 to T1 or from T1 within the limit angle ⁇ 1 necessary for operation without causing slip between the main rope 12 and the sheave 11. Changes exponentially to T2. Further, the tension does not change in the difference between the actual winding angle ⁇ and ⁇ 1 in which the tension changes due to the traction, that is, ⁇ 1. Further, it has been found that this non-changing region always exists on the side that is wound up regardless of the magnitude of the tension.
- the tension of the main rope 12 changes from T1 to T2 during the angle ⁇ 1, so when the travel distance of the sheave 11 is integrated on the exit side (the counterweight 5 side) of the main rope 12, The main rope 12 is displaced (elongated) toward the counterweight 5 due to the elongation ⁇ of the tension difference of the main rope 12, and the moving distance of the sheave 11 is reduced accordingly.
- the main rope 12 is on the side to be rolled up (the counterweight 5 side). Therefore, the main rope 12 does not shift with respect to the sheave 11.
- the elongation ⁇ of the tension difference of the main rope 12 is L, where the length of the main rope 12 moving the sheave 11 is L, the elastic modulus of the main rope 12 is E, and the cross-sectional area of the main rope 12 is A.
- ⁇ (T2 ⁇ T1) ⁇ L / (E ⁇ A).
- the main rope 12 and the sheave 11 are separated by the same amount in the same direction when viewed from either side, and the deviation amount between the sheave 11 and the main rope 12 when one reciprocation is made is the difference in tension between the main ropes 12. Elongation ⁇ . Therefore, when the car 4 is operated up and down by the same distance, the accumulated rotational speed of the sheave 11 is measured, and the difference between the measured values is calculated, whereby the deviation between the sheave 11 and the main rope 12 is calculated. That is, the creep can be calculated.
- the slip occurs in this way, for example, when the car 4 is raised in a state where no load is loaded in the car 4, when considering the exit side of the main rope 12, the sheave 11 with respect to the moving distance of the main rope 12. The travel distance is further reduced. For this reason, when the car 4 is lowered, the car 4 cannot be moved to a predetermined position unless the moving distance of the sheave 11 is increased by the amount of slip. That is, the rotation pulse integrated value of the sheave 11 at the time of lowering is further larger than the rotation pulse integrated value of the sheave 11 at the time of rising.
- the traction ability is hardly suddenly greatly reduced, and gradually decreases as the sheave groove 11a is worn due to aging and the main rope 12 is worn and deteriorated.
- the confirmation of the traction capability does not have to be performed at all times, and may be performed periodically, for example, using a time zone where the elevator apparatus is not used (for example, at night).
- a slip detection signal is transmitted to a remote elevator monitoring panel to notify that the sheave 11 or the main rope 12 needs to be inspected. Further, when it is determined that the slip is larger and the normal operation is impossible, the operation of the elevator apparatus is stopped.
- the traveling distance of the car 4 when the slip is inspected becomes large, even if slip occurs, the ratio of creep due to the tension difference becomes large. For this reason, it is preferable that the traveling distance of the car 4 when performing the slip inspection is a minimum distance for accelerating to a predetermined speed and decelerating and stopping. That is, it is preferable that the slip inspection unit 15 causes the car 4 to travel in a speed pattern in which the constant speed traveling time is sufficiently shorter than the acceleration / deceleration time when performing the slip inspection. In addition, it is more preferable to minimize the constant speed traveling time, that is, zero, and the slip detection accuracy can be further improved.
- the car 4 is reciprocated by a predetermined distance by the slip inspection unit 15, and based on the difference between the signal from the rotation detector 13 at the time of ascent and the signal from the rotation detector 13 at the time of the descent. Since the slip between the sheave 11 and the main rope 12 is inspected, a device or software for pulse integration is required, but without providing another rotation detector that requires a new space. The slip can be inspected with a simple configuration.
- the slip inspection unit 15 performs the slip inspection after confirming that the inside of the car 4 is in an unloaded state, it is possible to detect the slip with high accuracy under stable conditions. Furthermore, when the slip inspection unit 15 performs the slip inspection, the car 4 travels with a speed pattern in which the constant speed traveling time is shorter than the acceleration / deceleration time, so that the slip detection accuracy can be improved.
- the slip inspection unit 15 is provided in the elevator control device 14, but the slip inspection unit 15 may be provided in another device such as a safety monitoring device or may be an independent device.
- the main rope 12 may be a rope having a circular cross section or a belt.
- the 1: 1 roping type elevator apparatus is shown.
- the present invention is not limited to this, and the present invention can be applied to, for example, a 2: 1 roping type elevator apparatus.
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
実施の形態1.
図1はこの発明の実施の形態1によるエレベータ装置を示す構成図である。図において、昇降路1内には、一対のかごガイドレール2及び一対の釣合おもりガイドレール3が設置されている。かご4は、かごガイドレール2に沿って昇降路1内を昇降される。釣合おもり5は、釣合おもりガイドレール3に沿って昇降路1内を昇降される。 Preferred embodiments of the present invention will be described below with reference to the drawings.
1 is a block diagram showing an elevator apparatus according to
T1>T2のとき、T1/T2>eμkθ、
T1<T2のとき、T2/T1>eμkθ
となるように設計されている。 In the traction type elevator apparatus, the tension on the
When T1> T2, T1 / T2> e μkθ ,
When T1 <T2, T2 / T1> e μkθ
It is designed to be.
さらに、スリップ検査部15は、スリップの検査を行う際、加減速時間よりも一定速走行時間が短い速度パターンでかご4を走行させるので、スリップの検出精度を向上させることができる。 Further, since the
Furthermore, when the
また、主索12は、断面円形のロープであってもベルトであってもよい。
さらに、上記の例では、1:1ローピング方式のエレベータ装置を示したが、これに限定されるものではなく、例えば2:1ローピング方式のエレベータ装置にもこの発明は適用できる。 In the above example, the
The
Furthermore, in the above example, the 1: 1 roping type elevator apparatus is shown. However, the present invention is not limited to this, and the present invention can be applied to, for example, a 2: 1 roping type elevator apparatus.
Claims (3)
- 綱車を有する巻上機、
上記綱車に巻き掛けられている主索、
上記綱車の一側で上記主索により吊り下げられているかご、
上記綱車の他側で上記主索により吊り下げられている釣合おもり、
上記綱車の回転に応じた信号を発生する回転検出器、及び
上記かごを所定の距離だけ往復運転させ、上昇時の上記回転検出器からの信号と下降時の上記回転検出器からの信号との差に基づいて、上記綱車と上記主索との間のスリップを検査するスリップ検査部
を備えているエレベータ装置。 Hoisting machine with sheave,
The main rope wound around the sheave,
A car suspended by the main rope on one side of the sheave,
A counterweight suspended by the main rope on the other side of the sheave,
A rotation detector that generates a signal corresponding to the rotation of the sheave, and a reciprocating operation of the car by a predetermined distance, and a signal from the rotation detector when ascending and a signal from the rotation detector when descending An elevator apparatus comprising a slip inspection unit for inspecting a slip between the sheave and the main rope based on the difference between the sheaves. - 上記スリップ検査部は、上記かご内が無負荷状態であることを確認した後に、スリップの検査を行う請求項1記載のエレベータ装置。 The elevator apparatus according to claim 1, wherein the slip inspection unit performs slip inspection after confirming that the car is in an unloaded state.
- 上記スリップ検査部は、スリップの検査を行う際、加減速時間よりも一定速走行時間が短い速度パターンで上記かごを走行させる請求項1記載のエレベータ装置。 The elevator apparatus according to claim 1, wherein the slip inspection unit causes the car to travel in a speed pattern in which a constant speed traveling time is shorter than an acceleration / deceleration time when performing a slip inspection.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08710980.7A EP2213606B1 (en) | 2008-02-08 | 2008-02-08 | Elevator device |
PCT/JP2008/052101 WO2009098772A1 (en) | 2008-02-08 | 2008-02-08 | Elevator device |
CN2008801127214A CN101896415A (en) | 2008-02-08 | 2008-02-08 | Elevator device |
KR1020107006436A KR101345885B1 (en) | 2008-02-08 | 2008-02-08 | Elevator device |
JP2009552360A JP5334868B2 (en) | 2008-02-08 | 2008-02-08 | Elevator equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/052101 WO2009098772A1 (en) | 2008-02-08 | 2008-02-08 | Elevator device |
Publications (1)
Publication Number | Publication Date |
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WO2009098772A1 true WO2009098772A1 (en) | 2009-08-13 |
Family
ID=40951860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/052101 WO2009098772A1 (en) | 2008-02-08 | 2008-02-08 | Elevator device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2213606B1 (en) |
JP (1) | JP5334868B2 (en) |
KR (1) | KR101345885B1 (en) |
CN (1) | CN101896415A (en) |
WO (1) | WO2009098772A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011042480A (en) * | 2009-08-24 | 2011-03-03 | Mitsubishi Electric Corp | Elevator device |
WO2017203561A1 (en) * | 2016-05-23 | 2017-11-30 | 三菱電機株式会社 | Elevator apparatus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5947094B2 (en) * | 2012-04-25 | 2016-07-06 | 株式会社日立製作所 | elevator |
KR101935189B1 (en) | 2015-02-18 | 2019-01-03 | 미쓰비시덴키 가부시키가이샤 | Diagnostic equipment of elevators |
CN107522056B (en) * | 2017-09-27 | 2020-05-05 | 杭州西奥电梯有限公司 | Method and system for monitoring traction capacity of elevator system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62205973A (en) | 1986-03-05 | 1987-09-10 | 株式会社日立製作所 | Method and device for controlling operation of elevator |
JP2007153547A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Building Systems Co Ltd | Sliding quantity detecting method and sliding quantity detecting device of main rope for elevator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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DE8904375U1 (en) * | 1989-04-07 | 1989-07-27 | TÜV Bayern e.V., 8000 München | Device for recording physical parameters of an elevator |
JPH038681A (en) * | 1989-06-02 | 1991-01-16 | Mitsubishi Electric Corp | Main rope slippage detecting device of elevator |
-
2008
- 2008-02-08 KR KR1020107006436A patent/KR101345885B1/en active IP Right Grant
- 2008-02-08 EP EP08710980.7A patent/EP2213606B1/en active Active
- 2008-02-08 JP JP2009552360A patent/JP5334868B2/en active Active
- 2008-02-08 WO PCT/JP2008/052101 patent/WO2009098772A1/en active Application Filing
- 2008-02-08 CN CN2008801127214A patent/CN101896415A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62205973A (en) | 1986-03-05 | 1987-09-10 | 株式会社日立製作所 | Method and device for controlling operation of elevator |
JP2007153547A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Building Systems Co Ltd | Sliding quantity detecting method and sliding quantity detecting device of main rope for elevator |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011042480A (en) * | 2009-08-24 | 2011-03-03 | Mitsubishi Electric Corp | Elevator device |
WO2017203561A1 (en) * | 2016-05-23 | 2017-11-30 | 三菱電機株式会社 | Elevator apparatus |
JPWO2017203561A1 (en) * | 2016-05-23 | 2019-01-17 | 三菱電機株式会社 | Elevator equipment |
US11492231B2 (en) * | 2016-05-23 | 2022-11-08 | Mitsubishi Electric Corporation | Elevator apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR101345885B1 (en) | 2013-12-30 |
KR20100051109A (en) | 2010-05-14 |
JP5334868B2 (en) | 2013-11-06 |
EP2213606B1 (en) | 2018-04-25 |
EP2213606A4 (en) | 2014-05-14 |
CN101896415A (en) | 2010-11-24 |
JPWO2009098772A1 (en) | 2011-05-26 |
EP2213606A1 (en) | 2010-08-04 |
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