WO2022269879A1 - 溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 - Google Patents
溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 Download PDFInfo
- Publication number
- WO2022269879A1 WO2022269879A1 PCT/JP2021/024009 JP2021024009W WO2022269879A1 WO 2022269879 A1 WO2022269879 A1 WO 2022269879A1 JP 2021024009 W JP2021024009 W JP 2021024009W WO 2022269879 A1 WO2022269879 A1 WO 2022269879A1
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- Prior art keywords
- sensor
- hole
- sheave
- measuring
- groove
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Classifications
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- 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
-
- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
Definitions
- the present disclosure relates to a method and apparatus for measuring the wear amount of grooves.
- the present disclosure also relates to elevator sheaves.
- Patent Document 1 describes a device for inspecting elevator sheaves.
- the device described in Patent Literature 1 includes a displacement sensor.
- a displacement sensor is arranged to face the rope wound around the sheave.
- a displacement sensor detects the displacement of the surface of the rope.
- a displacement sensor detects the displacement of the surface of the sheave.
- the displacement sensor is attached to the bracket with a cover.
- This bracket is a separate member from the sheave. Therefore, the results detected by the displacement sensor include the mounting error of the cover. Further, the amount of wear of the groove measured using the displacement sensor includes the amount of wear of the rope as an error. Therefore, the device described in Patent Document 1 has a problem of poor measurement accuracy.
- the method of measuring the amount of groove wear according to the present disclosure is a method of measuring the amount of wear of grooves formed in a metal sheave.
- the measuring method includes a first step in which the sensor faces a reference surface facing the direction opposite to the direction in which the bottom surface of the groove faces, and after the first step, the metal thickness, which is the distance between the bottom surface and the reference surface, is measured and a second step of measuring with the sensor.
- a measuring device includes a sensor that has a measurement surface and is capable of measuring the thickness of a metal member by bringing the measurement surface into contact with the metal member, and a support member that supports the sensor.
- the support member includes a base to which the sensor is fixed, a disk-shaped first fitting portion provided in the base and protruding from the surface of the base, and a first fitting portion provided in the base and protruding from the surface of the base and having a central axis in the first fitting. a disk-shaped second fitting portion parallel to the central axis of the fitting portion.
- An elevator sheave includes an inner cylindrical portion fixed to a rotating shaft, an outer cylindrical portion having a plurality of grooves for winding a rope on the outer peripheral surface, and an outer cylindrical portion provided in the inner cylindrical portion. and a support portion that supports the tubular portion.
- a measurement hole is formed in the outer cylinder so as to pass between the plurality of grooves and the rotating shaft. The central axis of the hole is parallel to the axis of rotation.
- FIG. 3 is a diagram showing a cross section taken along line AA of FIG. 2; 1 is a diagram showing an example of a measuring device according to Embodiment 1; FIG. It is the figure which looked at the measuring apparatus shown in FIG. 4 from the B direction. It is the figure which looked at the measuring apparatus shown in FIG. 4 from the C direction.
- FIG. 3 is a view showing the EE section of FIG. 2; It is a figure for demonstrating the method of measuring the wear amount of a groove
- FIG. 1 is a diagram showing an example of an elevator device.
- the elevator system comprises a car 1 and a counterweight 2.
- the car 1 moves up and down in the hoistway 3 .
- a counterweight 2 moves up and down the hoistway 3 .
- a car 1 and a counterweight 2 are suspended in a hoistway 3 by ropes 4 .
- the rope 4 is, for example, a wire rope.
- the hoist 5 drives the car 1.
- the hoisting machine 5 comprises a drive sheave 6 , a motor 7 and a braking device 8 .
- the drive sheave 6 is made of metal.
- a rope 4 is wound around a drive sheave 6 .
- the motor 7 generates driving force for driving the drive sheave 6 .
- a brake device 8 holds the drive sheave 6 stationary.
- FIG. 1 shows, as an example, a 2:1 roping elevator system. In the 1:1 roping elevator system, the rope 4 is further wound around the deflector wheel.
- the drive sheave 6 and the deflector sheave are examples of elevator sheaves.
- FIG. 2 is an enlarged view of the drive sheave 6.
- FIG. 3 is a diagram showing a cross section along line AA of FIG.
- the drive sheave 6 includes an inner tubular portion 10 , an outer tubular portion 11 and a support portion 12 .
- the inner cylindrical portion 10 is fixed to the rotating shaft 9 .
- the rotating shaft 9 passes through the inner cylindrical portion 10 .
- the rotary shaft 9 is rotated by the driving force of the motor 7 .
- the rotating shaft 9 is directly connected to the output shaft of the motor 7 .
- the inner cylindrical portion 10 rotates together with the rotating shaft 9 .
- the inner tubular portion 10 is arranged inside the outer tubular portion 11 .
- a plurality of grooves 13 for winding the rope 4 are formed on the outer peripheral surface of the outer cylindrical portion 11 .
- FIG. 3 shows an example in which three grooves 13 are formed in the outer cylindrical portion 11 at regular intervals. Any number of grooves 13 may be formed on the outer peripheral surface of the outer cylindrical portion 11 .
- 3 shows an example in which one rope 4 is wound around each groove 13 formed on the outer peripheral surface of the outer cylindrical portion 11. As shown in FIG. That is, in the example shown in FIG. 3 , the car 1 is suspended by three ropes 4 . The rope 4 may not be wound around some of the grooves 13 formed in the outer cylindrical portion 11 .
- the support part 12 is provided on the inner cylinder part 10 and radially extends from the inner cylinder part 10 .
- the support portion 12 connects the inner cylinder portion 10 and the outer cylinder portion 11 . That is, the outer tube portion 11 is supported by the support portion 12 .
- the drive sheave 6 is manufactured by casting, the inner tubular portion 10, the outer tubular portion 11, and the support portion 12 are integrally formed.
- the suspension load acting on each rope 4 is adjusted to be the same for each rope 4 .
- the lifting load acting on the rope 4 becomes uneven with the passage of time.
- the progress of wear of the groove 13 is proportional to the magnitude of the hanging load acting on the rope 4 . Therefore, progress of wear of the grooves 13 is uneven.
- the through-hole 14 is a measurement hole used when measuring the wear amount of the groove 13 .
- the plurality of through holes 14 are arranged around the rotating shaft 9 .
- eight through-holes 14 are formed around the rotating shaft 9 at regular intervals.
- the number of through-holes 14 formed in the outer cylindrical portion 11 is not limited to eight.
- the through-holes 14 are opened at the side surfaces 11a and 11b of the outer cylindrical portion 11 .
- the side surface 11a and the side surface 11b are surfaces perpendicular to the rotating shaft 9 and face in opposite directions.
- a central axis of the through hole 14 is parallel to the rotation axis 9 .
- the through hole 14 is formed so as to pass between the rotating shaft 9 and each groove 13 .
- the stepped holes 15 are arranged adjacent to the corresponding through holes 14 .
- the stepped hole 15 includes a blind hole 15a opening at the side surface 11a and a threaded hole 15b opening at the bottom surface of the blind hole 15a.
- the central axis of the threaded hole 15b coincides with the central axis of the blind hole 15a.
- FIG. 4 is a diagram showing an example of the measuring device 20 according to the first embodiment.
- FIG. 5 is a view of the measuring device 20 shown in FIG. 4 as seen from the B direction.
- FIG. 6 is a view of the measuring device 20 shown in FIG. 4 as seen from direction C.
- the measuring device 20 is a device for measuring the amount of wear of the grooves 13 formed in the drive sheave 6 .
- the measurement device 20 may measure the amount of wear of grooves formed in other sheaves.
- Measuring device 20 comprises sensor 21 , cable 22 , indicator 23 and support member 24 .
- the sensor 21 has a measurement surface 25.
- the sensor 21 emits, for example, ultrasonic waves from the measurement surface 25 . If the measurement surface 25 is in contact with the surface of the metal member, the ultrasonic waves from the measurement surface 25 propagate inside the metal member. Ultrasonic waves propagating inside the metal member reach another surface of the metal member and are reflected by the other surface. The sensor 21 can measure the distance between the surfaces, that is, the thickness of the metal member by detecting this reflected ultrasonic wave. A result measured by the sensor 21 is displayed on the display 23 .
- the support member 24 supports the sensor 21. Further, the support member 24 has a function of positioning the sensor 21 when the wear amount of the groove 13 is measured by the measuring device 20 .
- the support member 24 comprises a base portion 26 , a mating portion 27 and a mating portion 28 .
- the base 26 is plate-shaped. Sensor 21 is fixed to base 26 . If the sensor 21 has a cylindrical shape as shown in FIG. 4, the base 26 is arranged perpendicular to the sensor 21 .
- the fitting portion 27 is disc-shaped.
- the fitting portion 28 is disc-shaped.
- the fitting portion 27 and the fitting portion 28 are provided on the base portion 26 .
- the fitting portion 27 and the fitting portion 28 protrude from the surface 26 a of the base portion 26 .
- the center axis of the fitting portion 28 is arranged parallel to the center axis of the fitting portion 27 .
- a part of the sensor 21 protrudes from the fitting part 27 in the examples shown in FIGS.
- the part of the sensor 21, ie the protruding part, is cylindrical.
- the outer peripheral surface of the projecting portion is the measurement surface 25 .
- part of the outer peripheral surface of the projecting portion is the measurement surface 25 .
- the center axis of the projecting portion is parallel to the center axis of the fitting portion 27 .
- the center axis of the projecting portion does not match the center axis of the fitting portion 27 .
- the projecting portion is arranged so that a step is not formed between at least a portion of the measurement surface 25 and a portion of the outer peripheral surface of the fitting portion 27 .
- the sensor 21 is fixed to the base portion 26 so that the lower end of the measurement surface 25 indicated by symbol D and the lower end of the outer peripheral surface of the fitting portion 27 are arranged in a straight line.
- a through hole 24 a is formed in the support member 24 .
- the through hole 24 a penetrates the base portion 26 and the fitting portion 28 .
- a central axis of the through-hole 24 a coincides with a central axis of the fitting portion 28 .
- FIG. 7 is a diagram showing the EE cross section of FIG. FIG. 7 shows an example in which three grooves 13a to 13c are formed in the outer cylindrical portion 11 of the drive sheave 6.
- the groove 13a is an example of a groove that is not worn.
- a groove 13b shows an example of a groove in which wear has progressed slightly from the state of the groove 13a.
- a groove 13c shows an example of a groove in which wear has further progressed from the state of the groove 13b.
- the wear amount of the groove 13 is obtained by measuring the distance between the bottom surface 30 of the groove 13 and a preset reference plane with the measuring device 20 .
- the reference plane is a plane facing in the direction opposite to the direction in which the bottom surface 30 faces. That is, the distance between the bottom surface 30 and the reference plane is the thickness of the metal of that portion of the traction sheave 6 .
- the reference surface is formed inside the through hole 14 . That is, in the example shown in the present embodiment, the portion of the inner peripheral surface of the through-hole 14 that faces in the direction opposite to the direction in which the bottom surface 30 faces is the reference surface.
- the elevator maintenance staff When measuring the wear amount of the groove 13 using the measuring device 20 , the elevator maintenance staff first inserts the sensor 21 into the through hole 14 and places the sensor 21 in the through hole 14 . Then, the maintenance personnel arranges the support member 24 so that the fitting portion 27 fits into the through hole 14 and the fitting portion 28 fits into the blind hole 15 a of the stepped hole 15 .
- FIG. 8 is a diagram for explaining a method of measuring the wear amount of the groove 13.
- FIG. FIG. 8 corresponds to the EE section of FIG.
- reference numeral 30a is given to the bottom surface of the groove 13a.
- reference numeral 30b is attached to the bottom surface of the groove 13b.
- Reference numeral 30c is attached to the bottom surface of the groove 13c.
- the support member 24 is arranged so that the fitting portion 27 fits into the through hole 14 and the fitting portion 28 fits into the blind hole 15a.
- the measurement surface 25 of the sensor 21 faces the reference surface formed inside the through hole 14 . More preferably, the measurement surface 25 of the sensor 21 contacts the reference surface formed inside the through hole 14 .
- the maintenance worker fixes the support member 24 to the outer cylindrical portion 11 by tightening the bolt 31 passed through the through hole 24a into the screw hole 15b.
- FIG. 9 is a view of the sensor 21 and the support member 24 attached to the outer cylindrical portion 11 as seen from direction B.
- the sensor 21 When the sensor 21 and the support member 24 are attached to the outer cylindrical portion 11, the sensor 21 enables maintenance personnel to determine the distance L1 between the bottom surface 30a and the reference surface, the distance L2 between the bottom surface 30b and the reference surface, and the distance L2 between the bottom surface 30c and the reference surface. and measure the distance L3. A result measured by the sensor 21 is displayed on the display 23 .
- the maintenance personnel compare each of the measured distances L1, L2, and L3 with the reference value TH1.
- the reference value TH1 is preset. If at least one of the measured distances L1, L2, and L3 is smaller than the reference value TH1, the maintenance personnel determines that the traction sheave 6 needs to be replaced. In such a case, maintenance personnel replace the traction sheave 6 with a new one on the spot or at a later date.
- maintenance personnel obtain the difference between the largest and smallest values in the measured distance (metal thickness).
- the maintenance personnel compares the obtained difference with the reference value TH2.
- the reference value TH2 is preset. If the obtained difference is greater than the reference value TH2, the maintenance personnel determines that the traction sheave 6 needs to be replaced.
- the measuring device 20 may not have the display 23 .
- the measuring device 20 may have a storage device or a transmitter instead of the display 23 . If the measurement device 20 has a storage device, the results measured by the sensor 21 are stored in the storage device. If the measuring device 20 has a transmitter, the results measured by the sensor 21 are transmitted to other pre-registered devices.
- the sensor 21 is arranged so that the measurement surface 25 faces the reference surface formed on the outer cylinder portion 11 of the drive sheave 6 . Therefore, the mounting error of the sensor 21 can be kept to a very small value, and the wear amount of the groove 13 can be measured with high accuracy. Further, in the example shown in this embodiment, the through holes 14 can be machined at the time of manufacturing the drive sheave 6, so that the through holes 14 can be machined with extremely high accuracy.
- the reference plane for measurement is arranged at a position closer to the rotating shaft 9 than the groove 13 is. Moreover, the reference surface is oriented in a direction opposite to the direction in which the bottom surface 30 of the groove 13 is oriented. For this reason, it is possible to prevent the oil exuded from the rope 4 from adhering to the reference surface.
- the drive sheave 6 may further include a lid (not shown) for closing the through hole 14 .
- the drive sheave 6 may include a lid that closes both the through hole 14 and the stepped hole 15 . In such a case, the elevator is normally operated with the through hole 14 closed by the lid.
- the measuring device 20 may further comprise means for pressing the measuring surface 25 of the sensor 21 against the reference surface of the outer cylinder 11 inside the through hole 14 .
- an elastic member, a leaf spring, or the like may be employed as the means.
- the measuring device 20 may be permanently installed on the traction sheave 6 .
- the measuring device 20 preferably has a storage device or a transmitter instead of the display 23 .
- the measurement method according to the present disclosure can be applied when measuring the amount of wear of grooves formed on a metal sheave.
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
Description
図1は、エレベーター装置の例を示す図である。エレベーター装置は、かご1及びつり合いおもり2を備える。かご1は、昇降路3を上下に移動する。つり合いおもり2は、昇降路3を上下に移動する。かご1及びつり合いおもり2は、ロープ4によって昇降路3に吊り下げられる。ロープ4は、例えばワイヤロープである。
Claims (8)
- 金属製の綱車に形成された溝の摩耗量を測定する方法であって、
前記溝の底面が向く方向と反対の方向を向く基準面に、センサを対向させる第1工程と、
前記第1工程の後、前記底面と前記基準面との距離である金属の厚さを前記センサによって測定する第2工程と、
を備えた溝摩耗量の測定方法。 - 前記第2工程の後、前記センサによって測定された厚さが基準値より小さい場合に、前記綱車を交換する第3工程を更に備えた請求項1に記載の溝摩耗量の測定方法。
- 前記センサは支持部材に支持され、
前記綱車に、測定用の孔が形成され、
前記孔の中心軸は、前記綱車の回転軸に対して平行であり、
前記基準面は、前記孔の内側に形成され、
前記第1工程において、前記センサが前記孔に配置された状態で前記支持部材が前記綱車に固定される請求項1又は請求項2に記載の溝摩耗量の測定方法。 - 測定面を有し、前記測定面を金属製部材に接触させることによって前記金属製部材の厚さを測定可能なセンサと、
前記センサを支持する支持部材と、
を備え、
前記支持部材は、
前記センサが固定された基部と、
前記基部に設けられ、前記基部の表面から突出する円盤状の第1嵌め合い部と、
前記基部に設けられ、前記基部の前記表面から突出し、中心軸が前記第1嵌め合い部の中心軸に対して平行である円盤状の第2嵌め合い部と、
を備えた測定装置。 - 前記支持部材に、前記基部と前記第2嵌め合い部とを貫くように貫通孔が形成され、
前記支持部材は、前記貫通孔を貫通するボルトによって前記金属製部材に固定される請求項4に記載の測定装置。 - 回転軸に固定される内筒部と、
ロープを巻き掛けるための複数の溝が外周面に形成された外筒部と、
前記内筒部に設けられ、前記外筒部を支持する支持部と、
を備え、
前記外筒部に、前記複数の溝と前記回転軸との間を通過するように測定用の孔が形成され、
前記孔の中心軸は、前記回転軸に対して平行であるエレベーター用綱車。 - 前記外筒部に、前記回転軸の周りに等間隔に配置されるように複数の前記孔が形成された請求項6に記載のエレベーター用綱車。
- 前記孔を塞ぐための蓋を更に備えた請求項6又は請求項7に記載のエレベーター用綱車。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202180099636.4A CN117545705A (zh) | 2021-06-24 | 2021-06-24 | 槽磨损量的测定方法、测定装置以及电梯用绳轮 |
| JP2023529384A JP7347717B2 (ja) | 2021-06-24 | 2021-06-24 | 溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 |
| PCT/JP2021/024009 WO2022269879A1 (ja) | 2021-06-24 | 2021-06-24 | 溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2021/024009 WO2022269879A1 (ja) | 2021-06-24 | 2021-06-24 | 溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022269879A1 true WO2022269879A1 (ja) | 2022-12-29 |
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| PCT/JP2021/024009 Ceased WO2022269879A1 (ja) | 2021-06-24 | 2021-06-24 | 溝摩耗量の測定方法、測定装置、及びエレベーター用綱車 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7347717B2 (ja) |
| CN (1) | CN117545705A (ja) |
| WO (1) | WO2022269879A1 (ja) |
Citations (5)
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|---|---|---|---|---|
| JP2003112876A (ja) * | 2001-07-12 | 2003-04-18 | Inventio Ag | サスペンションロープ摩耗検出器 |
| JP2006027762A (ja) * | 2004-07-13 | 2006-02-02 | Mitsubishi Electric Corp | エレベータ用綱車 |
| JP2011213479A (ja) * | 2010-04-02 | 2011-10-27 | Hitachi Building Systems Co Ltd | エレベータのシーブの磨耗診断装置 |
| JP2011246242A (ja) * | 2010-05-27 | 2011-12-08 | Hitachi Building Systems Co Ltd | シーブ溝の摩耗量測定装置 |
| JP2013018643A (ja) * | 2011-07-14 | 2013-01-31 | Toshiba Elevator Co Ltd | エレベータの診断装置 |
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| JP2008116007A (ja) * | 2006-11-07 | 2008-05-22 | Toyota Motor Corp | 樹脂製プーリ |
| JP2009074687A (ja) * | 2007-08-24 | 2009-04-09 | Ntn Corp | センサ付軸受 |
| KR100907048B1 (ko) * | 2007-11-22 | 2009-07-09 | 한국타이어 주식회사 | 차량용 타이어의 편마모 측정 장치 |
| KR101062295B1 (ko) * | 2009-12-30 | 2011-09-05 | 재단법인 포항산업과학연구원 | 물품의 폭의 변화의 초음파 측정방법 |
| KR101499612B1 (ko) * | 2014-06-25 | 2015-03-06 | 주식회사 피레타 | 초음파 탐상을 이용한 이송 설비의 내부 마모 관리 시스템 및 방법 |
| DE102015117024A1 (de) * | 2015-10-06 | 2017-04-06 | Infineon Technologies Ag | Eine Vorrichtung, eine Reifendruckmessvorrichtung, ein Reifen, ein Verfahren und ein Computerprogramm zum Erhalten einer Information, die eine Profiltiefe anzeigt |
| CN106321043A (zh) * | 2016-10-17 | 2017-01-11 | 广汉市思科信达科技有限公司 | 一种旋转式超声换能器 |
| CN209945249U (zh) * | 2019-05-16 | 2020-01-14 | 中国舰船研究设计中心 | 推力轴承全周润滑膜厚度动态测量装置 |
| CN213265429U (zh) * | 2020-05-06 | 2021-05-25 | 邯郸钢铁集团有限责任公司 | 一种桥式起重机滑轮组结构 |
-
2021
- 2021-06-24 WO PCT/JP2021/024009 patent/WO2022269879A1/ja not_active Ceased
- 2021-06-24 CN CN202180099636.4A patent/CN117545705A/zh active Pending
- 2021-06-24 JP JP2023529384A patent/JP7347717B2/ja active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003112876A (ja) * | 2001-07-12 | 2003-04-18 | Inventio Ag | サスペンションロープ摩耗検出器 |
| JP2006027762A (ja) * | 2004-07-13 | 2006-02-02 | Mitsubishi Electric Corp | エレベータ用綱車 |
| JP2011213479A (ja) * | 2010-04-02 | 2011-10-27 | Hitachi Building Systems Co Ltd | エレベータのシーブの磨耗診断装置 |
| JP2011246242A (ja) * | 2010-05-27 | 2011-12-08 | Hitachi Building Systems Co Ltd | シーブ溝の摩耗量測定装置 |
| JP2013018643A (ja) * | 2011-07-14 | 2013-01-31 | Toshiba Elevator Co Ltd | エレベータの診断装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2022269879A1 (ja) | 2022-12-29 |
| JP7347717B2 (ja) | 2023-09-20 |
| CN117545705A (zh) | 2024-02-09 |
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