WO2015198384A1 - エレベータ用調速機およびそれを用いたエレベータ装置 - Google Patents
エレベータ用調速機およびそれを用いたエレベータ装置 Download PDFInfo
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- WO2015198384A1 WO2015198384A1 PCT/JP2014/066618 JP2014066618W WO2015198384A1 WO 2015198384 A1 WO2015198384 A1 WO 2015198384A1 JP 2014066618 W JP2014066618 W JP 2014066618W WO 2015198384 A1 WO2015198384 A1 WO 2015198384A1
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- governor
- roller
- speed
- elevator
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
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- the present invention relates to a speed governor for an elevator equipped with a speed governor that detects an overspeed during an elevator ascending operation and an overspeed during a descending operation, and an elevator apparatus using the same.
- Elevator devices are generally equipped with a speed governor that constantly monitors the ascending / descending speed of the car and makes the car emergency stop when the car falls into a predetermined overspeed state.
- the speed governor is configured to supply power to the hoisting machine that drives the car when the raising / lowering speed of the car exceeds the rated speed and reaches the first overspeed (usually 1.3 times the rated speed). And the power supply of the control apparatus which controls this hoisting machine is cut off, respectively.
- the speed governor is provided with an emergency stop device provided in the car when the car descending speed exceeds the first overspeed and reaches the second overspeed (usually 1.4 times the rated speed) for some reason. To stop the car mechanically.
- Patent Document 1 discloses a speed control rope connected to a car, a sheave around which the speed control rope is wound, a first speed control mechanism that controls the rotational speed of the sheave, and a sheave.
- a speed control device including a second speed control mechanism that is connected to the horizontal shaft of the main shaft via a clutch mechanism and adjusts the rotational speed of the sheave when the rotational force of the sheave is transmitted is described.
- the clutch mechanism transmits the rotational force of the sheave to the second speed control mechanism when the sheave rotates normally (when the car descends) and reverses (when the car rises).
- the transmission of the rotational force is canceled, the first speed control mechanism detects the overspeed at the time of ascent, the second speed control mechanism detects the overspeed at the time of the lowering, and the car Different overspeeds can be detected depending on the moving direction.
- Patent Document 1 exemplifies a one-way clutch and the like.
- the rotating body of the second speed adjusting mechanism the rotation of the horizontal shaft of the sheave is released by the clutch mechanism during the lift operation of the elevator.
- the rotation of the horizontal axis is gradually transmitted to the rotating body of the second speed control mechanism due to the frictional resistance even during the ascending operation, and the second speed control mechanism may be in the speed control state.
- the descending overspeed is set smaller than the ascending overspeed, if the rotation of the sheave during the ascending operation that rotates at high speed is transmitted to the second speed control mechanism by frictional resistance, the descending overspeed is erroneously set. May be detected and the elevator may stop abnormally.
- the present invention provides a highly reliable and maintainable elevator governor capable of reliably detecting an overspeed during an ascending operation and an overspeed during a descending operation, and an elevator apparatus using the same. .
- an elevator governor includes a drive wheel that is rotationally driven according to the lifting and lowering of a lifting body, and a first rotating body that is mechanically connected to the driving wheel.
- the rotation of the driving wheel is transmitted to the first rotating body, and the first speed adjusting mechanism that detects the overspeed of the lifting body based on the rotating speed of the first rotating body, and the driving wheel via the clutch.
- the second rotating body is mechanically connected, and when the elevating body is lowered, the rotation of the drive wheel is transmitted to the second rotating body via the clutch, and is based on the rotation speed of the second rotating body.
- a second speed control mechanism that detects transmission of rotation of the driving wheel by the clutch when the lifting body is raised, and rotates in synchronization with the clutch.
- a first roller, a second roller disposed opposite to the first roller, and a first roller A rotation prevention mechanism that has a belt wound around the roller and the second roller, and prevents the rotation of the clutch when the elevating body is raised by the tension of the belt; and the abnormality of the belt when the elevating body is raised and lowered And an abnormality detection means for detecting.
- an elevator apparatus includes an elevating body suspended by a main rope, a hoisting machine on which the main rope is wound, and a speed governor that detects an overspeed of the elevating body. If the speed governor detects an overspeed, the elevator is emergency stopped, and the speed governor is the elevator speed governor according to the present invention.
- the rotation prevention mechanism that prevents the rotation of the clutch by the belt tension prevents erroneous detection of overspeed at the time of ascent, and the abnormality detection means that detects abnormality of the belt reduces the function of the belt. Can be reliably detected.
- the governor for elevators with high reliability and maintainability is obtained.
- the reliability and maintainability of the elevator apparatus are improved.
- FIG. 1 is a side view showing a schematic configuration of a speed governor included in an elevator apparatus that is Embodiment 1 of the present invention.
- FIG. 3 is a partial front view of the speed governor according to the first embodiment. It is a partial front view of a governor in the state where abnormality occurred in a belt. It is a partial front view of the speed governor with which the elevator apparatus which is Example 2 of this invention is provided. BRIEF DESCRIPTION OF THE DRAWINGS The outline of the whole structure of the elevator apparatus which is Example 1 of this invention is shown.
- FIG. 5 shows an outline of the overall configuration of the elevator apparatus that is Embodiment 1 of the present invention.
- the elevating body 3 (car) and the counterweight 4 are connected by the main rope 5.
- the main rope 5 is wound around a hoisting machine 6 and a turning pulley 11 installed in the machine room 1 formed in the upper part of the hoistway 2, and is driven by the hoisting machine 6.
- the elevating body 3 moves up and down along the guide rail 7 in the hoistway 2.
- a control device (not shown) for controlling the hoisting machine 6, a speed governor 12, and the like are arranged.
- An endless governor rope 101 is wound around the sheave 104 of the governor 12 and the pulley 13 installed in the lower part of the hoistway 2.
- the governor rope 101 is stretched over the entire lifting stroke in the hoistway 2 when tension is applied by the pulley 13.
- the detected overspeed during the ascending operation and the overspeed during the descending operation can be set to different values.
- the elevating body 3 is provided with an emergency stop 8 that grips the guide rail 7 with a wedge in an emergency, and an operation lever 9 that drives the emergency stop 8 and is pivotally supported on the elevating body 3 side.
- a governor rope 101 is connected to the operating lever 9.
- the governor 12 shuts off the power to the hoisting machine 6 and a control panel (not shown), or operates the emergency stop 8.
- the speed governor 12 grips the speed governor rope 101.
- FIG. 1 is a side view showing a schematic configuration of a governor included in an elevator apparatus that is Embodiment 1 of the present invention.
- FIG. 2 is a partial front view of the speed governor according to the first embodiment.
- the governor 12 is fixed to the horizontal shaft 103, and a first sheave that detects the overspeed during the ascending operation of the sheave 104 around which the governor rope 101 is wound and the elevator 3.
- the second speed adjusting mechanism B that is connected to the horizontal shaft 103 via the clutch 105 and detects the over-lowering speed during the lowering operation of the elevating body 3, and the like.
- a rotation preventing mechanism C that prevents the rotation of the rotating body B1 of the second speed adjusting mechanism B when the transmission of the rotation of the sheave 104 to the second speed adjusting mechanism B is released.
- the rotation prevention mechanism C includes a first roller 106, a second roller 107, and a belt 108 wound around these rollers, as will be described later.
- the horizontal shaft 103 is rotatably supported by a speed governor frame 102 fixed to the machine room 1 via a bearing.
- the rotating body A1 of the first speed adjusting mechanism A is fixedly provided on one end side in the longitudinal direction of the horizontal shaft 103, and the second speed adjusting mechanism B is provided on the other end side in the longitudinal direction of the horizontal shaft 103.
- the rotating body B1 is attached via the clutch 105.
- a one-way clutch is used as the clutch 105, and an inner ring of the one-way clutch is fixed to the horizontal shaft 103, and an outer ring is fixed to the rotating body B1.
- the clutch 105 transmits the rotation of the sheave 104 to the rotating body B1 of the second speed adjusting mechanism B when the elevating body 3 is lowered, and the clutch 105 transmits the rotation of the sheave 104 to the second speed adjusting mechanism B. The transmission of the rotation of the sheave 104 is released.
- the first and second speed governing mechanisms A and B are mechanically connected to a sheave 104 that is rotationally driven by the speed governor rope 101, and rotators A 1 and B 1 that rotate in synchronization with the rotation of the sheave 104. Each overspeed in the upward direction and the downward direction is detected on the basis of the rotational speed. More specific configurations of the first and second speed control mechanisms are as follows in this embodiment.
- the first speed adjusting mechanism A includes a rotating body A1, a pendulum (not shown) that is attached to the rotating body A1, rotates together with the rotating body A1, and is displaced by a centrifugal force acting according to the rotational speed of the rotating body A1.
- the second speed adjusting mechanism B is a rotating body B1 and a pendulum (not shown) that is attached to the rotating body B1 and rotates together with the rotating body B1 and is displaced by a centrifugal force that operates according to the rotational speed of the rotating body B1. ).
- the first speed adjusting mechanism A displaces the pendulum by centrifugal force.
- the car stopping switch provided in the first speed adjusting mechanism A is turned on, and it is detected that the ascending speed of the car has reached the first overspeed in the ascending direction.
- the second speed adjusting mechanism B when the descending speed of the car reaches the first overspeed in the descending direction, that is, 1.3 times the rated speed in the descending direction in this embodiment, the pendulum caused by the centrifugal force. Is configured such that the car stop switch in the second speed adjusting mechanism B is turned on, and detects that the lowering speed of the car has reached the first overspeed in the lowering direction.
- the passenger's ear closeness tends to be felt more strongly when descending than when ascending due to a sudden change in atmospheric pressure due to the raising and lowering of the elevator 3, so the rated speed in the descending direction is higher than the rated speed in the ascending direction Set to a low value. Therefore, the first overspeed in the downward direction detected by the second speed control mechanism B is set to a lower value than the first overspeed in the upward direction detected by the first speed control mechanism A. Is done.
- the value of the first overspeed can be set by appropriately adjusting the displacement of the pendulum and the installation position of the stop switch.
- the first speed adjusting mechanism A that operates by detecting the overspeed in the upward direction detects that the upward speed of the elevating body 3 has reached 1.3 times the rated speed in the upward direction.
- a switch for stopping the car provided in the mechanism A is turned on to cut off the power source of the hoisting machine 6 and the power source of the control device of the hoisting machine 6.
- the second speed adjusting mechanism B that operates by detecting the overspeed in the descending direction detects that the descending speed of the elevating body 3 has reached 1.3 times the rated speed in the descending direction
- a car stop switch provided in the speed control mechanism B is turned on to cut off the power supply of the hoisting machine 6 and the power supply of the control device of the hoisting machine 6.
- the second speed adjusting mechanism B is configured such that when the descending speed of the elevator 3 (car) reaches 1.4 times the second overspeed in the descending direction, that is, the rated speed in the descending direction in this embodiment. Then, the emergency stop 8 is operated to mechanically stop the elevator 3 mechanically.
- the pendulum (not shown) attached to the rotating body B1 is further displaced from the position where the car stop switch is turned on, so that the speed governor 12 is described in, for example, Patent Document 1 described above.
- the governor rope 101 is gripped and the movement of the governor rope 101 is stopped.
- the governor rope gripping mechanism (not shown) provided in the second governor B is used as the pendulum and the machine. Connected and works.
- the operating lever 9 connected to the governor rope 101 is pulled up by the lowering of the elevating body 3 as shown in FIG.
- the guide rail 7 is gripped by a wedge (not shown).
- the raising / lowering body 3 stops mechanically.
- the second speed adjusting mechanism B stops its operation by releasing the rotation of the sheave 104 by the clutch 105 during the lifting operation of the lifting body.
- the speed governor according to this embodiment can set the overspeed during the ascending operation and the overspeed during the descending operation to different values, so that the rated speed during the ascending operation and the rated speed during the descending operation are different. It can be applied to an elevator apparatus.
- the first speed adjusting mechanism A and the second speed adjusting mechanism B using the pendulum as described above for example, a known flyweight speed adjusting mechanism (for example, see the above-mentioned Patent Document 1) is used. It is not limited to.
- the rotational speeds of the rotary bodies A1 and B1 are measured by a rotary encoder or the like, and when the measured rotational speed reaches a preset overspeed, the hoisting machine 6 and the control device are turned off, The stop 8 may be operated. In this case, the emergency stop 8 can be operated by the electric actuator.
- the rotating bodies A1 and B1 are not limited to the sheave 104 driven by the governor rope 101, and may be rotated by driving wheels that are rotationally driven according to the lifting and lowering of the lifting body 3.
- a driving wheel for example, a driving roller that is rotationally driven by a frictional force with the guide rail 7 when the elevating body 3 moves up and down in contact with the guide rail 7 can be applied.
- the rotation prevention mechanism C is disposed so as to face the first roller 106 below the first roller 106 and the first roller 106 provided coaxially with the rotating body B1. 2 rollers 107 and an endless belt 108 wound around the first roller 106 and the second roller 107.
- the rotation prevention mechanism C includes a main body bracket 202 attached to the speed governor frame (102 in FIG. 1), and a roller bracket 201 that rotatably supports the second roller 107. And a spring 204 that urges the second roller 107 in a direction opposite to that of the first roller 106.
- the first roller 106 is fixed to the outer ring of the rotating body B1 or the clutch 105 (see FIG. 1), and rotates together with the rotating body B1.
- the second roller 107 is rotatably supported by the roller bracket 201 via a shaft 208.
- the roller bracket 201 is attached to the main body bracket 202 via a shaft 209 so as to be rotatable.
- the spring 204 is provided between a spring mounting portion 210 fixed to the main body bracket 202 and a spring mounting portion 211 fixed to the roller bracket 201.
- the second roller 107 is biased in the opposite direction to the first roller 106 by the spring 204, thereby increasing the tension applied to the belt 108 and causing resistance to the rotating body B1 via the first roller 106. Energized. This prevents the rotation of the rotating body B1 due to the frictional resistance acting in the clutch 105 (between the inner ring and the outer ring) in the state where the rotation of the sheave 104 is released during the ascending operation of the elevating body 3. The This prevents the second overspeed mechanism B from erroneously detecting the overspeed when the elevating body 3 is raised. Accordingly, since both the overspeed in the upward direction and the overspeed in the downward direction can be reliably detected, the reliability of the governor that can detect the overspeed in the upward direction and the overspeed in the downward direction is improved.
- the rotation preventing mechanism in the present embodiment when the transmission of the sheave is released by the clutch, it is possible to prevent the rotating body B1 of the second speed regulating mechanism B from idling. As a result, when shifting to the descent operation, the speed governor is damaged by the impact on the second speed governing mechanism when the clutch is engaged with the rotating body B1, or a large impact sound is generated with the idling of the clutch. Such as inconvenience.
- the rotation prevention mechanism C is opposed to the first roller 106 and the first roller 106 that rotate coaxially with the rotating body B ⁇ b> 1 (see FIG. 1) of the second speed adjusting mechanism B.
- a second roller 107 that rotates synchronously with the first roller 106, and a belt 108 that serves as a transmission system for transmitting rotation from the first roller 106 to the second roller 107.
- a semicircular shielding plate 203 that is attached to the second roller 107 and rotates synchronously with the second roller 107, and a rotation detection sensor 205 that is installed on the roller bracket 201 so as to sandwich the shielding plate 203.
- the rotation detection sensor 205 a photoelectric sensor including a light receiving unit and a light emitting unit is used. At this time, the rotating shielding plate 203 intermittently shields light incidence from the light emitting unit to the light receiving unit. As a result, the photoelectric sensor 205 sends an on / off signal in accordance with the rotation state of the first roller 106 and the second roller 107. That is, depending on the output signal state of the rotation detection sensor 205 when the shielding plate 203 rotates with the rotation of the first roller 106 that rotates in synchronization with the rotation of the rotating body B1 of the second speed adjusting mechanism B, the clutch It is possible to detect 105 operating states, that is, whether or not a failure has occurred.
- the abnormality of the clutch 105 can be reliably detected, the speed governor can be accurately maintained, and the reliability can be maintained. Therefore, the maintainability of the governor capable of detecting the overspeed in the upward direction and the overspeed in the downward direction is improved.
- the abnormality of the belt 108 can be detected even when the elevator is being lifted by the belt abnormality detection means described below.
- the belt abnormality detection means can detect abnormality of the belt 108 both during the elevator ascending operation and during the descent operation.
- a micro switch 206 with a rotating cam that senses the displacement of the roller bracket 201 is fixed to a main body bracket 202 attached to the main body of the governor.
- a pin 212 provided at an end of the micro switch 206 opposite to the shaft 209 in the longitudinal direction of the roller bracket 201 is engaged with the rotating cam portion.
- FIG. 3 is a partial front view of the speed governor in a state where an abnormality has occurred in the belt.
- the belt abnormality detecting means described above By detecting the tension drop including the disappearance of the tension of the belt 108 by the belt abnormality detecting means described above, it is possible to reliably detect the abnormality of the belt 108, maintain the speed governor accurately, and maintain reliability. it can. Thereby, the maintainability of the governor capable of detecting the overspeed in the upward direction and the overspeed in the downward direction is improved. Furthermore, as shown in FIG. 5, the use of the speed governor in the present embodiment improves the reliability and maintainability of the elevator apparatus.
- FIG. 1 The same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.
- the overall configuration of the elevator apparatus according to the second embodiment is the same as that of the first embodiment shown in FIG.
- a push button type micro switch 301 is used instead of the micro switch 206 with the rotating cam in the first embodiment in order to detect the abnormality of the belt 208.
- the push button type micro switch 301 is fixed to the main body bracket 202 below the end of the roller bracket 201 opposite to the shaft 209 in the longitudinal direction.
- the roller bracket 201 when an abnormality occurs in the belt 108, the roller bracket 201 causes the end of the roller bracket 201 opposite to the shaft 209 in the longitudinal direction to move downward in the drawing due to the spring force of the spring 204. Displacement and push the push button of the micro switch 301. As a result, the micro switch 301 is activated, and the occurrence of an abnormality in the belt 108 can be detected.
- the displacement of the roller bracket 201 may be detected using a proximity sensor or a distance sensor instead of the micro switch 301.
- the reliability and maintainability of the governor capable of detecting the overspeed in the upward direction and the overspeed in the downward direction are improved. Furthermore, by using the governor in the second embodiment, the reliability and maintainability of the elevator apparatus are improved.
- the elevator device may be a so-called machine room-less elevator in which a hoisting machine and a control device are installed in a hoistway.
- a speed governor can be installed in the fixed part (for example, the top part of the guide rail 7) in the top part of the hoistway.
- the governor may be provided in the lower part of the hoistway 2, for example, in a pit.
- Main body bracket 203 ... Shield plate, 204 ... Spring, 205 ... Rotation detection sensor, 206 ... Micro switch, 208 ... Shaft, 209 ... Shaft, 210 ... Spring mounting part, 211 ... Spring mounting part, 212 ... Pin, 301 ... Micro switch, 1000 ... Building
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Abstract
Description
Claims (10)
- 昇降体の昇降に応じて回転駆動される駆動輪と、
前記駆動輪に機械的に接続される第1の回転体を有し、前記駆動輪の回転が前記第1の回転体に伝達され、前記第1の回転体の回転速度に基づいて前記昇降体の上昇過速度を検出する第1の調速機構と、
前記駆動輪にクラッチを介して機械的に接続される第2の回転体を有し、前記昇降体の下降時には、前記駆動輪の回転が、前記クラッチを介して前記第2の回転体に伝達され、前記第2の回転体の回転速度に基づいて前記昇降体の下降過速度を検出し、前記昇降体の上昇時には、前記クラッチによって前記駆動輪の回転の伝達が解除される第2の調速機構と、
を備えるエレベータ用調速機において、
前記クラッチと同軸で同期して回転する第1のローラと、前記第1のローラと対向して配置される第2のローラと、前記第1のローラおよび前記第2のローラに巻き掛けられるベルトと、を有し、前記ベルトの張力によって、前記昇降体の上昇時に、前記クラッチの回転を阻止する回転阻止機構と、
前記昇降体の上昇時および下降時において前記ベルトの異常を検知する異常検知手段と、
を備えることを特徴とするエレベータ用調速機。 - 請求項1において、
前記異常検知手段は、前記ベルトの張力の低下を検知することによって前記ベルトの異常を検知することを特徴とするエレベータ用調速機 - 請求項2において、
前記異常検知手段は、
前記第2のローラが取り付けられ、前記第2のローラを介して前記ベルトの張力が付勢されると共に、ばね力が付勢されるローラブラケットと、
前記ベルトの張力の低下する時、前記ばね力によって生じる前記ローラブラケットの変位によって作動するスイッチ手段と、
を備え、
前記スイッチ手段の作動により前記ベルトの異常を検知することを特徴とするエレベータ用調速機。 - 請求項3において、
前記スイッチ手段は、前記ローラブラケットと係合するカム部を備える回転カム付マイクロスイッチであることを特徴とするエレベータ用調速機。 - 請求項3において、
前記スイッチ手段は、前記ローラブラケットによって押されるボタン部を有する押しボタン式マイクロスイッチであることを特徴とするエレベータ用調速機。 - 請求項2において、
前記異常検知手段は、
前記第2のローラが取り付けられ、前記第2のローラを介して前記ベルトの張力が付勢されると共に、ばね力が付勢されるローラブラケットと、
前記ベルトの張力の低下する時、前記ばね力によって生じる前記ローラブラケットの変位を検出するセンサ手段と、
を備え、
検出される前記変位に基づいて前記ベルトの異常を検知することを特徴とするエレベータ用調速機。 - 請求項6において、
前記センサ手段が、近接センサおよび距離センサのいずれかであることを特徴とするエレベータ用調速機。 - 請求項1乃至7のいずれか一項において、
前記第2のローラの回転を検出する回転検出手段を備えることを特徴とするエレベータ用調速機。 - 主ロープによって吊られる昇降体と、
前記主ロープが巻き掛けられる巻上機と、
前記昇降体の過速度を検出する調速機と、
を備え、
前記調速機が過速度を検出したら、前記昇降体を非常停止させるエレベータ装置において、
前記調速機が請求項1乃至7のいずれか一項に記載のエレベータ用調速機であることを特徴とするエレベータ装置。 - 主ロープによって吊られる昇降体と、
前記主ロープが巻き掛けられる巻上機と、
前記昇降体の過速度を検出する調速機と、
を備え、
前記調速機が過速度を検出したら、前記昇降体を非常停止させるエレベータ装置において、
前記調速機が請求項8に記載のエレベータ用調速機であることを特徴とするエレベータ装置。
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CN201480011504.1A CN105392729B (zh) | 2014-06-24 | 2014-06-24 | 电梯用调速器以及使用该电梯用调速器的电梯装置 |
PCT/JP2014/066618 WO2015198384A1 (ja) | 2014-06-24 | 2014-06-24 | エレベータ用調速機およびそれを用いたエレベータ装置 |
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US10968077B2 (en) | 2018-07-19 | 2021-04-06 | Otis Elevator Company | Enhanced governor system for elevator |
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JP6636411B2 (ja) * | 2016-11-18 | 2020-01-29 | 株式会社日立製作所 | エレベーター制御装置及びエレベーター制御方法 |
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- 2014-06-24 JP JP2015531368A patent/JP5944056B2/ja active Active
- 2014-06-24 WO PCT/JP2014/066618 patent/WO2015198384A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000327241A (ja) * | 1999-05-17 | 2000-11-28 | Mitsubishi Electric Corp | エレベータ装置および調速装置 |
JP4975104B2 (ja) * | 2007-08-09 | 2012-07-11 | 三菱電機株式会社 | エレベータの調速機 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10968077B2 (en) | 2018-07-19 | 2021-04-06 | Otis Elevator Company | Enhanced governor system for elevator |
Also Published As
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JPWO2015198384A1 (ja) | 2017-04-20 |
CN105392729B (zh) | 2017-03-08 |
CN105392729A (zh) | 2016-03-09 |
JP5944056B2 (ja) | 2016-07-05 |
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