WO2009098772A1 - エレベータ装置 - Google Patents

エレベータ装置 Download PDF

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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
Application number
PCT/JP2008/052101
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Atsushi Mitsui
Original Assignee
Mitsubishi Electric Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to KR1020107006436A priority Critical patent/KR101345885B1/ko
Priority to EP08710980.7A priority patent/EP2213606B1/en
Priority to CN2008801127214A priority patent/CN101896415A/zh
Priority to PCT/JP2008/052101 priority patent/WO2009098772A1/ja
Priority to JP2009552360A priority patent/JP5334868B2/ja
Publication of WO2009098772A1 publication Critical patent/WO2009098772A1/ja

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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.

Landscapes

  • 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)
PCT/JP2008/052101 2008-02-08 2008-02-08 エレベータ装置 WO2009098772A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020107006436A KR101345885B1 (ko) 2008-02-08 2008-02-08 엘리베이터 장치
EP08710980.7A EP2213606B1 (en) 2008-02-08 2008-02-08 Elevator device
CN2008801127214A CN101896415A (zh) 2008-02-08 2008-02-08 电梯装置
PCT/JP2008/052101 WO2009098772A1 (ja) 2008-02-08 2008-02-08 エレベータ装置
JP2009552360A JP5334868B2 (ja) 2008-02-08 2008-02-08 エレベータ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2008/052101 WO2009098772A1 (ja) 2008-02-08 2008-02-08 エレベータ装置

Publications (1)

Publication Number Publication Date
WO2009098772A1 true WO2009098772A1 (ja) 2009-08-13

Family

ID=40951860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052101 WO2009098772A1 (ja) 2008-02-08 2008-02-08 エレベータ装置

Country Status (5)

Country Link
EP (1) EP2213606B1 (ko)
JP (1) JP5334868B2 (ko)
KR (1) KR101345885B1 (ko)
CN (1) CN101896415A (ko)
WO (1) WO2009098772A1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011042480A (ja) * 2009-08-24 2011-03-03 Mitsubishi Electric Corp エレベータ装置
WO2017203561A1 (ja) * 2016-05-23 2017-11-30 三菱電機株式会社 エレベーター装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5947094B2 (ja) * 2012-04-25 2016-07-06 株式会社日立製作所 エレベータ
BR112017014164A2 (pt) 2015-02-18 2018-03-06 Mitsubishi Electric Corporation dispositivo de diagnóstico de elevador.
CN107522056B (zh) * 2017-09-27 2020-05-05 杭州西奥电梯有限公司 一种监测电梯系统曳引能力的方法和系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62205973A (ja) 1986-03-05 1987-09-10 株式会社日立製作所 エレベーター装置及びその運転制御方法
JP2007153547A (ja) * 2005-12-06 2007-06-21 Hitachi Building Systems Co Ltd エレベーター用主ロープの滑り量検出方法及び滑り量検出装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8904375U1 (de) * 1989-04-07 1989-07-27 TÜV Bayern e.V., 8000 München Vorrichtung zum Erfassen von physikalischen Kenngrößen eines Aufzugs
JPH038681A (ja) * 1989-06-02 1991-01-16 Mitsubishi Electric Corp エレベーターの主索滑り検出装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62205973A (ja) 1986-03-05 1987-09-10 株式会社日立製作所 エレベーター装置及びその運転制御方法
JP2007153547A (ja) * 2005-12-06 2007-06-21 Hitachi Building Systems Co Ltd エレベーター用主ロープの滑り量検出方法及び滑り量検出装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011042480A (ja) * 2009-08-24 2011-03-03 Mitsubishi Electric Corp エレベータ装置
WO2017203561A1 (ja) * 2016-05-23 2017-11-30 三菱電機株式会社 エレベーター装置
JPWO2017203561A1 (ja) * 2016-05-23 2019-01-17 三菱電機株式会社 エレベーター装置
US11492231B2 (en) * 2016-05-23 2022-11-08 Mitsubishi Electric Corporation Elevator apparatus

Also Published As

Publication number Publication date
EP2213606A1 (en) 2010-08-04
JP5334868B2 (ja) 2013-11-06
JPWO2009098772A1 (ja) 2011-05-26
EP2213606A4 (en) 2014-05-14
CN101896415A (zh) 2010-11-24
KR101345885B1 (ko) 2013-12-30
EP2213606B1 (en) 2018-04-25
KR20100051109A (ko) 2010-05-14

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