WO2004031064A1 - Systeme elevateur - Google Patents

Systeme elevateur Download PDF

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Publication number
WO2004031064A1
WO2004031064A1 PCT/JP2002/010368 JP0210368W WO2004031064A1 WO 2004031064 A1 WO2004031064 A1 WO 2004031064A1 JP 0210368 W JP0210368 W JP 0210368W WO 2004031064 A1 WO2004031064 A1 WO 2004031064A1
Authority
WO
WIPO (PCT)
Prior art keywords
speed
car
elevator
set speed
hoistway
Prior art date
Application number
PCT/JP2002/010368
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Nagase
Atsuya Fujino
Toshisuke Mine
Hiromi Inaba
Osamu Okuni
Original Assignee
Hitachi, Ltd.
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 Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to JP2004541190A priority Critical patent/JPWO2004031064A1/ja
Priority to PCT/JP2002/010368 priority patent/WO2004031064A1/fr
Publication of WO2004031064A1 publication Critical patent/WO2004031064A1/fr

Links

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
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/08—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding

Definitions

  • the present invention relates to an elevator system capable of reducing the length of an elevator hoistway.
  • a buffer corresponding to the rated speed of the elevator is provided at the bottom of the hoistway in case of an elevator in case of emergency.
  • the acceleration at the time of deceleration stop by this buffer is a constant value from the viewpoint of safety, so the buffer length increases as the rated speed of the elevator increases. For this reason, there is a problem that the shaft pit depth becomes deep.
  • Japanese Patent Application Laid-Open Publication No. 2000-3505372 is a conventional technique for dealing with this. This publication describes that the governor operating speed is changed at the upper and lower ends of the hoistway to reduce the speed at which the car collides with the buffer during an emergency stop. Disclosure of Invention ⁇
  • Japanese Patent Application Laid-Open Publication No. 2001-35453072 only states that the emergency stop device is operated by operating the governor for the overspeed of the car. As a result, it is considered that the governor is operated more frequently, and there is more chance of damage to the traveling rail due to the operation of the emergency stop device. In addition, there is a problem that the opportunity to take time to return increases. Therefore, the present invention provides an elevator system that can reduce the chances of damaging equipment and reducing the time and effort required to recover even if the buffer length is reduced. The purpose is to provide.
  • the present invention provides a means for setting a first set speed that is different depending on the position of a car in a hoistway, a speed higher than the first set speed, and a car in a hoistway.
  • An emergency stop device that operates when the car speed exceeds the second set speed is provided.
  • FIG. 1 is a configuration diagram showing an entire embodiment of the present invention.
  • FIG. 2 is a diagram showing the configuration of the drive control device 7 and the speed abnormality monitoring control device 101.
  • FIG. 3 is a diagram showing a set speed set in the present embodiment.
  • FIG. 4 is a flowchart showing the operation of the present embodiment.
  • FIG. 5 is a diagram showing the operation of this embodiment at a set speed.
  • FIG. 6 is a diagram for explaining the effect of the present embodiment.
  • FIG. 7 is a diagram showing a set speed different from FIG.
  • FIG. 8 is a diagram showing another set speed different from FIG.
  • FIG. 9 is an operation explanatory view showing another embodiment of the present invention.
  • FIG. 1 is a configuration diagram showing the entire embodiment of the present invention.
  • car 1 is suspended by rope 4.
  • the rope 4 passes from the car 1 through the sheave 32 and the deflecting wheel 33 to the counterweight 2.
  • the car 1 ascends and descends in the hoistway 6 along the traveling rail 5 when the sheaves 32 are driven by the motor 31.
  • the running rail of the counterweight 2 is omitted.
  • Motor 31 is attached to the shaft end of sheave 32.
  • the driving machine 3 including the motor 31, the sheave 32, the mechanical brake 34, etc. operates by receiving power supply from the drive control device 7.
  • car 1 moves up and down between required floors in response to call signals issued in car 1 and on floors 201, 202, 200, and -210. .
  • the floor of the landing has 10 floors from 201 to 210.
  • the speed abnormality monitoring control device 101 detects the position and speed of the car 1 in the hoistway 6. Also, set the first set speed and the second set speed. If the car speed is higher than the first set speed, the drive control device 7 stops driving the motor 31 and sends a signal to apply a brake using the brake 34 provided at the shaft end of the motor 31. Send.
  • a machine room 9 is provided at the top of the hoistway 6, where the governor 102 is installed.
  • the governor 102 is connected to an emergency stop device 105 provided in the car 1 via a governor rope 10'4 and a reverse governor pulley 103.
  • the governor 102 can freely set its operation speed, and this value is set as a second set value from the speed abnormality monitoring control device 101.
  • the governor 102 When the speed of the car exceeds the second set speed, which will be described later, the governor 102 operates the emergency stop device 103 via the governor rope 104 in the same manner as ordinary governor. When the emergency stop device 103 is operating, press the rail 5 to apply the brake. Multiply. In addition, a buffer 106 is provided below the hoistway 6.
  • the brake 34 is a mechanical brake provided in the car other than the emergency stop device or a mechanical brake that outputs a force for stopping the rotation of the sheave 32 and the motor 31.
  • FIG. 2 is a diagram showing a configuration of the drive control device 7 and the speed abnormality monitoring control device 101.
  • the control device 71 performs control for executing the speed control of the car 1, and the inverter (INV) 72 outputs a voltage and a frequency to the motor 31 based on a signal of the control device 71.
  • the brake control device 73 applies a voltage to the brake 34 during operation according to the signal of the control device 71 to release the brake. In other words, when stopping or when it is desired to stop by the brake, the application of the voltage to the brake 34 may be stopped.
  • Control of the position and speed of the car 1 by the control device 71 is performed by a signal from an encoder 331 attached to the shaft end of the motor 31 and a shield plate indicating a car stop position in the hoistway 6.
  • the speed Z position detector 1 1 1 detects the position and speed of the car 1 based on a signal from the encoder 33 1 and a signal from the shield plate different from the drive control device 7.
  • the pattern generator / comparator 1 1 2 generates a set speed according to the position of the car 1 from the signal indicating the end floor, in addition to the above signals, and Judge whether the speed is higher or lower than the pattern. Pattern generation Control the brake controller 73 and set the governor operation speed based on the output of the Z comparator 112.
  • the speed abnormality monitoring control device 101 detects the position and speed of the car 1 in the hoistway, the specified speed A according to the car position, the first set speed B slightly larger than it, and the second speed larger than this. To generate the set speed.
  • FIG. 2 is specified
  • FIG. 5 is a basic operation explanatory diagram showing a relationship between a speed A, a first set speed B, and a second set speed C.
  • the specified speed A is almost zero.
  • the car speed gradually increases at the set speed, and reaches the rated constant speed. Then, the speed is reduced near the upper end floor 210, and the speed becomes zero at the upper end floor 210.
  • the specified speed A is the specified jerk and acceleration from the lower floor (upper end) at the lower floor (201) to the upper floor (lower end) at the lower floor (210).
  • This is the set speed of car 1 when traveling at the rated speed.
  • Set speed B is set higher than specified speed A
  • set speed C is set higher than set speed B.
  • the speed has both upward and downward directions, but here it is expressed as its absolute value (magnitude).
  • FIG. 4 is a flowchart showing the operation of the present embodiment.
  • Step 1 101 is the operation by the speed abnormality monitoring control device 101
  • Step 1 102 is the operation by the drive control device 7
  • Step 1 103 is the operation by the governor 102 and the emergency stop device 105 It is.
  • the position and speed of the car are detected in step 101.
  • step 1002 a first set speed B and a second set speed C shown in FIG. 3 are generated according to the car position.
  • the second set speed is set to the governor 102.
  • step 1004 the car speed detected in step 1001 is compared with the first set speed generated in step 1002. If the car speed does not exceed the first set speed, the car is operating normally according to the speed command, or the speed is in the low range for some reason. Continue normal operation with device 7.
  • step 101 stops driving of the motor 31 and operates the brake 34.
  • step 103 stops at a predetermined acceleration due to the brake operation in step 103.
  • the second set speed set in step 1003 is compared with whether the car speed exceeds the second set speed in step 1021. If not, the car is operating normally in accordance with the speed command, or the speed is in the low speed range for some reason, so that normal operation by the drive control device 7 is continued in step 1011.
  • step 1023 the car stops at a predetermined acceleration due to the operation of the safety gear. The operation whether the car speed exceeds the first set speed or the second set speed is continuously performed as long as the car is operated.
  • the feature of the present embodiment is that the determination whether the car speed has exceeded the first set speed and the determination whether the car speed has exceeded the second set speed are performed in parallel. It is in. For this reason, the abnormality judgment and the operation at the time of the abnormality are performed in parallel, and the safety is greatly enhanced. Further, since the first set speed is set lower than the second set speed, the operation based on the first set speed comparison is prioritized, and the possibility that the operation based on the second set speed comparison occurs is small.
  • the operation flow of FIG. 4 has been described as being performed as a set of operations of individual devices, but the operation of the speed abnormality monitoring control device 101 is performed in the drive control device 7. Judgment and operation of governor 102 Can be performed by the drive control device 7. At this time, the operation can be performed by hardware logic or software logic. When integrating the device operations, it is desirable to take measures to avoid interference with other operation and control operations from the viewpoint of the reliability of the safety system.
  • the first set speed B is set in consideration of the deviation from the speed command of car 1 that should run at specified speed A, the speed detection error of car 1 and detection delay.
  • the second set speed C is set in consideration of the judgment time until the emergency brake is applied to the machine 3 when the first set speed B is exceeded and the increase of the car speed due to the operation delay.
  • the governor operation of the second set speed C is determined to be, for example, about 120% with respect to the specified speed, the first set speed B can be determined from the backward calculation.
  • governors examples include a governor with a structure that can change the operating point mechanically, and a governor that performs electrical operation.
  • a specific example of the latter is a structure in which the speed of a car is directly or indirectly detected as a rotation speed, and a signal proportional to the rotation speed, for example, the car speed is measured by an induced voltage, and the operation speed is changed. Can be obtained.
  • the governor is installed in the machine room.
  • the governor can be installed in the hoistway or in the car itself.
  • the car In the example where the car is installed in a car, it can be applied to an elevator system in which multiple cars are arranged in a hoistway.
  • the specified speed, the first set speed, and the second set speed set above may be determined in advance.
  • Figure 5 shows the car speed in the event of a car overspeed near the floor 202.
  • the dashed line D is the actual speed of the car when the car departs downward from the floor 210 at the upper end.
  • the vehicle is driven almost at the specified speed A, and an overspeed occurs at the point a.
  • the operations after step 105 are performed, and the car safely stops at the point c.
  • the operations after step 1022 are performed at point d, and the operation safely stops at point e.
  • the emergency stop is safely stopped.
  • the possibility that the safety gear operates will be small.
  • the safety measures are high because the response to speed abnormalities is dual.
  • Fig. 6 shows a case of a normal type elevator where the governor always operates at a constant speed.
  • the governor 301 in FIG. 6 operates at a fixed constant speed. Buffer 106 is longer than buffer 106 in FIG.
  • FIG. 7 shows the setting of the first set speed B and the second set speed C different from those shown in FIG.
  • the first set speed B and the second set speed C are set higher by a certain fixed speed than the specified speed A, but in Fig. 7, the speed is set higher by a certain ratio. You have set.
  • the collision speed ⁇ shown in FIG. 5 can be further reduced than in the case of FIG. 3, and the buffer can be reduced accordingly. As a result, the length of the hoistway can be further reduced.
  • FIG. 8 shows the setting of a first set speed B; a second set speed C different from that shown in FIG. 3 with respect to the specified speed ⁇ .
  • the first set speed B and the second set speed C are set higher than the specified speed A by a certain constant speed.
  • the set speed B and the set speed B are set higher.
  • Set speed C is set stepwise.
  • FIG. 9 is an operation example showing another embodiment of the present invention.
  • the basic operation is the same as in Fig. 4, except that the car speed is higher than the rated speed.
  • An example of a determination as to whether or not the speed can be made can be made based on whether or not the capacity of the converter in the drive control device 7 is exceeded when the speed is increased. That is, the conversion of the converter The capacity is maximized when the car is at rated speed, at rated load capacity, and when climbing. When the load capacity is small or when the descent operation is performed, there is room for the conversion capacity. Therefore, under this condition, the speed can be increased according to the margin of the converter. High-speed driving can reduce the time required for the car to arrive at the specified floor, especially when the passengers are not on board and arriving at the destination floor. As a result, the transport efficiency of the car is increased, and the overall transport capacity can be improved. If the speed is simply increased, the terminal voltage of the motor 31 will increase in proportion to the speed, and a value exceeding the maximum output voltage of the converter may be required. In this case, it can be dealt with by performing the field weakening control of the motor.
  • the emergency stop is safely stopped.
  • the possibility that the safety gear operates will be small.
  • safety is high because the response to speed abnormalities is dual.
  • the size of the buffer can be reduced, and the length of the hoistway can be shortened and the transport capacity can be improved.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

L'invention porte sur un ascenseur réduisant les risques d'accidents et les difficultés de remise en état, même en cas d'utilisation d'amortisseurs de faible longueur. Le système comporte un moyen de fixation d'une première vitesse variant en fonction de la position de la cabine dans la cage, un moyen de fixation d'une deuxième vitesse variant en fonction de la position de la cabine dans la cage, un frein mécanique intervenant lorsque la vitesse de la cabine dépasse la première vitesse fixée, et un arrêt d'urgence intervenant lorsque la vitesse de la cabine dépasse la deuxième vitesse fixée.
PCT/JP2002/010368 2002-10-04 2002-10-04 Systeme elevateur WO2004031064A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004541190A JPWO2004031064A1 (ja) 2002-10-04 2002-10-04 エレベーターシステム
PCT/JP2002/010368 WO2004031064A1 (fr) 2002-10-04 2002-10-04 Systeme elevateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/010368 WO2004031064A1 (fr) 2002-10-04 2002-10-04 Systeme elevateur

Publications (1)

Publication Number Publication Date
WO2004031064A1 true WO2004031064A1 (fr) 2004-04-15

Family

ID=32051296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/010368 WO2004031064A1 (fr) 2002-10-04 2002-10-04 Systeme elevateur

Country Status (2)

Country Link
JP (1) JPWO2004031064A1 (fr)
WO (1) WO2004031064A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006070436A1 (fr) * 2004-12-27 2006-07-06 Mitsubishi Denki Kabushiki Kaisha Limiteur de vitesse d’un ascenseur
WO2007034587A1 (fr) * 2005-09-21 2007-03-29 Mitsubishi Denki Kabushiki Kaisha Dispositif d’ascenseur
WO2007057973A1 (fr) * 2005-11-21 2007-05-24 Mitsubishi Denki Kabushiki Kaisha Systeme de frein pour ascenseur
JP2008508155A (ja) * 2004-07-27 2008-03-21 テュセンクルプ アウフツューゲ ゲーエムベーハー 移動体の移動状態を判定するための信号ストリップ及びシステム
EP1997766A1 (fr) 2007-05-09 2008-12-03 Hitachi, Ltd. Élévateur
US7533763B2 (en) 2005-02-04 2009-05-19 Kone Corporation Safety device, safety system, and method for supervising safety of an elevator system
JPWO2008068863A1 (ja) * 2006-12-06 2010-03-18 三菱電機株式会社 エレベータの安全装置
CN102275788A (zh) * 2011-06-14 2011-12-14 中国矿业大学 三段式速度给定矿井提升机控制方法及装置
CN113003350A (zh) * 2021-03-29 2021-06-22 广州广日电梯工业有限公司 电梯安全控制方法以及电梯安全控制装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145879A (en) * 1978-05-04 1979-11-14 Hitachi Ltd Trouble detecting device for speed controller
US4378059A (en) * 1980-04-18 1983-03-29 Hitachi, Ltd. Abnormal elevator speed detector
US5869794A (en) * 1995-11-08 1999-02-09 Inventio Ag Method and device for increased safety in elevators

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145879A (en) * 1978-05-04 1979-11-14 Hitachi Ltd Trouble detecting device for speed controller
US4378059A (en) * 1980-04-18 1983-03-29 Hitachi, Ltd. Abnormal elevator speed detector
US5869794A (en) * 1995-11-08 1999-02-09 Inventio Ag Method and device for increased safety in elevators

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008508155A (ja) * 2004-07-27 2008-03-21 テュセンクルプ アウフツューゲ ゲーエムベーハー 移動体の移動状態を判定するための信号ストリップ及びシステム
WO2006070436A1 (fr) * 2004-12-27 2006-07-06 Mitsubishi Denki Kabushiki Kaisha Limiteur de vitesse d’un ascenseur
US7533763B2 (en) 2005-02-04 2009-05-19 Kone Corporation Safety device, safety system, and method for supervising safety of an elevator system
KR100909304B1 (ko) * 2005-09-21 2009-07-24 미쓰비시덴키 가부시키가이샤 엘리베이터 장치
WO2007034587A1 (fr) * 2005-09-21 2007-03-29 Mitsubishi Denki Kabushiki Kaisha Dispositif d’ascenseur
EP1927567A4 (fr) * 2005-09-21 2012-12-19 Mitsubishi Electric Corp Dispositif d ascenseur
CN101151202B (zh) * 2005-09-21 2011-08-03 三菱电机株式会社 电梯装置
EP1927567A1 (fr) * 2005-09-21 2008-06-04 Mitsubishi Electric Corporation Dispositif d ascenseur
KR101038151B1 (ko) 2005-11-21 2011-05-31 미쓰비시덴키 가부시키가이샤 엘리베이터의 브레이크 시스템
WO2007057973A1 (fr) * 2005-11-21 2007-05-24 Mitsubishi Denki Kabushiki Kaisha Systeme de frein pour ascenseur
JPWO2007057973A1 (ja) * 2005-11-21 2009-04-30 三菱電機株式会社 エレベータのブレーキシステム
JP5179756B2 (ja) * 2005-11-21 2013-04-10 三菱電機株式会社 エレベータのブレーキシステム
JPWO2008068863A1 (ja) * 2006-12-06 2010-03-18 三菱電機株式会社 エレベータの安全装置
JP5053291B2 (ja) * 2006-12-06 2012-10-17 三菱電機株式会社 エレベータの安全装置
EP1997766A1 (fr) 2007-05-09 2008-12-03 Hitachi, Ltd. Élévateur
CN102275788A (zh) * 2011-06-14 2011-12-14 中国矿业大学 三段式速度给定矿井提升机控制方法及装置
CN113003350A (zh) * 2021-03-29 2021-06-22 广州广日电梯工业有限公司 电梯安全控制方法以及电梯安全控制装置

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