CN108463422B - Elevator and control device thereof - Google Patents
Elevator and control device thereof Download PDFInfo
- Publication number
- CN108463422B CN108463422B CN201680079037.5A CN201680079037A CN108463422B CN 108463422 B CN108463422 B CN 108463422B CN 201680079037 A CN201680079037 A CN 201680079037A CN 108463422 B CN108463422 B CN 108463422B
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- short
- circuit
- phase
- circuiting
- control device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
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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
-
- 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
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides an elevator control device, which can reduce the resistance value of a circuit which is short-circuited when in emergency stop so as to utilize the braking torque to the maximum extent and simultaneously facilitate the operation when the braking is released. The manual short-circuit device is provided with a manual short-circuit part (second short-circuit part) (7) for preventing acceleration when rescue operation is performed by releasing braking by using braking torque obtained by three-phase short-circuiting a winding of a traction motor (1), a manual short-circuit terminal part (7A) of the manual short-circuit part (7) capable of being short-circuited by a short-circuit connector (6) is provided in a hall indicator box (9) provided on a floor, and an automatic short-circuit part (first short-circuit part) (5) for generating braking torque by three-phase short-circuiting the winding of the traction motor (1) in emergency stop is provided in a control cabinet (8) housing a control device.
Description
Technical Field
The present invention relates to an elevator and a control device thereof.
Background
As a background art in this field, japanese patent laying-open No. 2012-184043 (patent document 1) is known. This publication describes an elevator apparatus in which a car and a counterweight are respectively installed in a hoistway so as to be able to rise and fall, a rope connecting the car and the counterweight is wound around a hoisting machine, and the car is lifted and lowered by the rotation of the hoisting machine, and the elevator apparatus includes a switch that is turned on when the power supply to a motor of the hoisting machine is cut off, and a dynamic braking circuit that is connected to a resistor in a power supply line via the switch and consumes an electromotive force from the motor. Further, this publication describes a configuration in which the braking of the hoisting machine is released by operating a rescue operation switch provided in the car, the car is moved by an offset load between the car and the counterweight, and during this movement, the dynamic braking control unit monitors the rotation speed of the hoisting machine, and if this rotation speed exceeds a preset speed, the resistance value is increased by the resistance value switching circuit.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2012-184043
Disclosure of Invention
Technical problem to be solved by the invention
However, the elevator apparatus described in patent document 1 does not sufficiently consider the case where the braking torque obtained by short-circuiting the three phases of the windings of the traction motor is used in order to reduce the empty travel distance at the time of emergency stop.
That is, if it is considered that a braking torque is obtained by causing a three-phase short circuit in the winding of the traction motor and is used to reduce the free running distance at the time of an emergency stop and to prevent acceleration when the brake is released to perform a rescue operation, the former is preferably automatically short-circuited by using a contactor contact, and the latter is preferably manually short-circuited by connecting a short-circuit connector.
In this case, in order to use the braking torque for the latter, the maintenance personnel must manually connect the short-circuiting connector to the front of the control cabinet. When the control cabinet is installed in the vicinity of the lowermost layer of the hoistway, a maintenance worker can enter the pit, and directly change the connection of the connector and connect the short-circuit connector in the control cabinet disposed in the pit. On the other hand, when the control cabinet is installed on the top of the hoistway, it is difficult to access the control cabinet if the car is not near the uppermost floor, and therefore, it is necessary to extend the connector connection portion to a hall indicator box (hall indicator box). However, if the wiring of the connector connection portion becomes long, the resistance value of the three-phase short-circuit increases, and therefore there is a problem that the effect of the braking torque at the time of the emergency stop decreases.
The invention aims to reduce the resistance value of a circuit which is short-circuited in emergency stop so as to utilize the brake torque to the maximum extent and facilitate the operation when the brake is released.
Means for solving the problems
In order to solve the above problems, an elevator control apparatus of the present invention uses a braking torque obtained by causing a three-phase short circuit to occur in a winding of a traction motor connected to a three-phase alternating-current power supply via a control apparatus for braking a car,
different circuits are separately provided as a first short-circuit portion for generating the braking torque at the time of an emergency stop and a second short-circuit portion for generating the braking torque at the time of a rescue operation by releasing braking,
in the second short circuit portion, a three-phase winding short circuit terminal portion for causing a three-phase short circuit of a winding of the hoisting motor is disposed in a hall indicator box.
Effects of the invention
According to the present invention, the resistance value of the circuit in which a short circuit occurs at the time of an emergency stop can be reduced to use the braking torque to the maximum, and the operation at the time of releasing the braking can be facilitated. Technical problems, technical features, and technical effects other than those described above will be more apparent from the following description of the embodiments.
Drawings
Fig. 1 is a circuit diagram showing a schematic configuration of an elevator control device according to an embodiment of the present invention.
Fig. 2 is a block diagram showing a specific configuration of the manual short-circuiting unit 7 shown in fig. 1.
Fig. 3 is a circuit diagram showing the brake release circuit 11 shown in fig. 2.
Fig. 4 is a diagram showing an embodiment of an elevator including an elevator control device of the present invention.
Detailed Description
Embodiments of the present invention are described below with reference to the drawings.
Example 1
Fig. 4 is a diagram showing an embodiment of an elevator including an elevator control device of the present invention. In the following description, the elevator control device 3 (see fig. 1) will be simply referred to as a control device.
The elevator apparatus 100 is configured such that, in a hoistway 101 formed in a building, an elevator car 103 and a counterweight 104 are connected by a rope 106 wound around a sheave 102 of a hoisting machine 105, and the sheave 102 of the hoisting machine 105 is rotationally driven by a hoisting motor 1 to cause the elevator car 103 and the counterweight 104 to be driven to move up and down with respect to each other.
In the configuration shown in this embodiment, the hoisting machine 105 including the hoisting motor 1 and the sheave 102 and the control cabinet 8 housing the control device 3 (see fig. 1) are disposed at the top portion in the hoistway 101. A hall indicator box 9 is provided in the upper hall H. The hall indicator box 9 provided in the upper hall H can be operated from the floor F of the upper hall H.
Fig. 1 is a circuit diagram showing a schematic configuration of an elevator control device according to an embodiment of the present invention.
In the following description, a case where the braking torque obtained by short-circuiting the windings of the traction motor 1 in three phases is used to reduce the empty travel distance at the time of emergency stop will be referred to as an operation (braking torque) at the time of emergency stop, and a case where the braking torque is used to prevent acceleration at the time of rescue operation by releasing braking will be referred to as an operation (braking torque) at the time of brake release.
In the elevator apparatus 100 using the permanent magnet synchronous motor, power is supplied from the three-phase ac power supply 2 to the traction motor 1 through the control device 3. For this purpose, the control device 3 has an inverter INV. The control device 3 further includes a control unit that controls opening and closing of a brake release operation switch 13 and energization of a three-phase short circuit release contactor coil control transistor 19, which will be described later.
The automatic short-circuiting section 5 uses a braking torque, which is obtained by short-circuiting the motor windings in three phases, for reducing the empty distance at the time of an emergency stop, and has automatically closable contactor contacts 4. The automatic short-circuiting section 5 having the contactor contacts 4 is disposed in the control cabinet 8 together with the control device 3.
The manual short-circuiting section 7 is configured to perform short-circuiting by the manually connected short-circuiting connector 6, and to prevent acceleration when the rescue operation is performed by releasing braking by using braking torque obtained by short-circuiting the motor windings in three phases. The manual short-circuiting part 7 is disposed in a hall indicator box 9 provided in the upper hall H.
The manual short-circuit terminal portion 7A of the manual short-circuit portion 7 is electrically connected to the control device 3 housed in the control cabinet 8 through a wire 7B. That is, the manual short-circuiting section 7 is constituted by a manual short-circuiting terminal section 7A and a wiring 7B. Further, short-circuit terminal portions 10A and 10B are disposed in the hall indicator box 9. The short- circuit terminal portions 10A and 10B are electrically connected to a brake release circuit 11 disposed in the control cabinet 8 via a wire 10E. The short- circuit terminal portions 10A and 10B and the brake release circuit 11 will be described in detail later.
The short-circuit terminal 10A is a terminal to be short-circuited by the short-circuit connector 10C. The short-circuit terminal 10B is a terminal to be short-circuited by the short-circuit connector 10D. The short-circuit connector 10C, the short-circuit connector 10D, and the short-circuit connector 6 are integrally formed, and short-circuiting of the short-circuit terminal 10A, the short-circuit terminal 10B, and the manual short-circuit portion 7 can be performed by one manual operation.
The short-circuit connector 10C, the short-circuit connector 10D, and the short-circuit connector 6 are stored in the hall indicator case 9.
Fig. 2 is a block diagram showing a specific configuration of the manual short-circuiting unit 7 shown in fig. 1.
The manual short-circuiting section 7 includes a structure inside the control cabinet 8 and a structure inside a hall indicator box 9, wherein the hall indicator box 9 is provided in a floor for performing hall call registration and car position display. The manual short-circuit portion 7 and the short- circuit terminal portions 10A and 10B are formed in the hall indicator case 9, and the manual short-circuit portion 7 and the short- circuit terminal portions 10A and 10B are connected by the short-circuit connector 6 and the short-circuit connectors 10C and 10D, respectively, when the brake is released.
In the control cabinet 8, a brake release circuit 11 is formed, which includes an excitation circuit for exciting a three-phase short-circuit release contactor coil 18 by a battery (brake release power source 12) to open the contactor contacts 4 when the short-circuit connectors 10C and 10D are connected to the short- circuit terminal portions 10A and 10B in the hall indicator box 9, and the details of which will be described later.
When the control cabinet 8 is installed on the top of the hoistway 101, it is difficult to access the control cabinet 8 if the car 103 does not move near the uppermost floor. In the conventional method, when the manual short-circuiting part 7 is provided in the hall indicator box 9 and the wiring 7A thereof is extended to the hall indicator box 9, the resistance value of the three-phase short-circuiting circuit increases at the time of emergency stop. In the emergency stop, the empty distance needs to be shortened, and a large braking torque is preferably obtained. However, if the resistance value of the three-phase short circuit increases, the braking torque obtained by the three-phase short circuit decreases, and the effect of the braking torque decreases.
Therefore, in the present embodiment, the following two sets of circuits are separately provided: short-circuit circuits (emergency stop short-circuit circuits) 4 and 5 for generating braking torque by causing a three-phase short-circuit in the winding of the hoisting motor 1 at the time of emergency stop, and short-circuit circuits (braking release short-circuit circuits) 6 and 7 for generating braking torque by causing a three-phase short-circuit in the winding of the hoisting motor 1 at the time of braking release. The emergency stop short-circuit is constituted by an automatic short-circuit section 5 having contactor contacts 4. The automatic short-circuiting section 5 having the contactor contacts 4 is formed in the control cabinet 8, and reduces the wiring resistance by shortening the wiring length.
On the other hand, the brake release time short circuit is constituted by the manual short circuit portion 7 and the short circuit connector 6. The manual short-circuit terminal portion 7A disposed in the hall indicator box 9 is used to connect the short-circuit connector 6 shown in fig. 1 when the brake is released. Therefore, the manual short-circuit terminal portion 7 extends into the hall indicator case 9, and the manual short-circuit terminal portion 7A is disposed in the hall indicator case 9. The short- circuit terminal portions 10A and 10B of the brake release circuit 11 are disposed in the hall indicator case 9 and electrically connected to a wiring 10E extending into the hall indicator case 9.
Compared with the short-circuit circuits 4 and 5 during emergency stop, the short-circuit circuits 6 and 7 during brake release do not cause a problem even if the braking torque is reduced due to an increase in wiring resistance. Therefore, in the present embodiment, the brake release short-circuit circuits 6 and 7 and the emergency stop short-circuit circuits 4 and 5 are provided separately. When the brake is released, the manual short-circuiting terminal 7A is short-circuited by the short-circuiting connector 6, and the winding of the traction motor 1 can be short-circuited in three phases by a simple operation in the hall indicator box 9 to generate a braking torque. This can improve the operability when the braking torque is used at the time of brake release.
In the present embodiment, by providing the emergency stop short-circuit circuits 4 and 5 and the brake release short-circuit circuits 6 and 7 separately, the resistances of the emergency stop short-circuit circuits 4 and 5 do not increase. Therefore, the braking torque at the time of emergency stop can be utilized to the maximum extent.
Fig. 3 is a circuit diagram showing the brake release circuit 11 shown in fig. 2.
A brake release power source 12 such as a battery is provided in the control cabinet 8, and the brake release power source 12 is connected to a series connection body of a brake release operation switch 13 and a brake release contactor coil 14. The brake release power source 12 is connected to a series connection body of the brake release contactor contact 15 and the brake coil 16 of the brake release contactor coil 14.
When the brake release operation switch 13 is closed, the brake release contactor coil 14 is excited, and the brake release contactor contact 15 is closed. When the brake release contactor contact 15 is closed, the brake coil 15 is excited, and the electromagnetic brake device is released from braking. On the other hand, the normal-time control power supply 17 is connected to a series connection body of the three-phase short-circuit-canceling contactor coil 18 and the three-phase short-circuit-canceling contactor coil control transistor 19.
By exciting the three-phase short-circuit release contactor coil 18, the contactor contacts 4 are opened, and the three-phase short circuit by the automatic short-circuit unit 5 is released. The three-phase short-circuit-canceling contactor coil control transistor 19 is turned on, and excites the three-phase short-circuit-canceling contactor coil 18.
The brake release circuit 11 of the present embodiment adds the following components compared to a normal brake circuit: a short-circuit terminal 10A connected between the brake release operation switch 13 and the three-phase short-circuit release contactor coil 18, and a short-circuit terminal 10B connected in parallel to the three-phase short-circuit release contactor coil control transistor 19.
Even if the control power supply 17 is lost at normal times and the three-phase short-circuit releasing contactor coil 18 is in a non-excited state, if the short-circuit connectors 10C and 10D shown in fig. 1 and 2 are connected to the short- circuit terminal portions 10A and 10B in the hall indicator box 9 shown in fig. 2, the short-circuit terminal portion 10A and the short-circuit terminal portion 10B shown in fig. 3 are short-circuited by the short-circuit connectors 10C and 10D. Accordingly, the brake-releasing contactor coil 14 and the three-phase short-circuit-releasing contactor coil 18 are connected to the brake-releasing power source 12, respectively, and are excited, respectively.
In the present embodiment, when the brake is released, the manual short-circuiting part 7 is short-circuited by the short-circuiting connector 6, and the short- circuiting terminal parts 10A and 10B are short-circuited by the short-circuiting connectors 10C and 10D. Thereby, the three-phase short-circuit removing contactor coil 18 is excited. The contactor coil 18 for three-phase short circuit relief is excited, and the contactor contacts 4 are opened. Thus, in the present embodiment, the braking torque can be obtained without using the contactor contacts 4. This reduces the load acting on the contactor contact 4, and can prolong the service life of the contactor contact 4.
In this way, according to the present invention, it is possible to obtain an elevator control device capable of reducing the resistance value of the circuit in which a short circuit occurs at the time of an emergency stop to use the braking torque to the maximum, and facilitating the operation at the time of braking.
In the present embodiment, the short-circuiting connector 10C, the short-circuiting connector 10D, and the short-circuiting connector 6 are integrally formed, but the short-circuiting connector 10C, the short-circuiting connector 10D, and the short-circuiting connector 6 do not necessarily have to be integrally formed. However, by integrating the short-circuiting connector 10C, the short-circuiting connector 10D, and the short-circuiting connector 6, the short-circuiting operation can be performed in a short time. Further, all of the three short-circuiting portions (the short-circuiting terminal portion 10A, the short-circuiting terminal portion 10B, and the manual short-circuiting portion 7) can be short-circuited by one short-circuiting operation, so that it is possible to prevent any one of the three short-circuiting portions from not performing a short-circuiting operation.
In the present embodiment, the manual short-circuit terminal portion 7A and the short- circuit terminal portions 10A and 10B are disposed in the hall indicator box 9 provided in the upper hall H, but the hall indicator box 9 provided in the upper hall H is not necessarily required. The hall indicator box 9 for arranging the manual terminal portion 7A and the short- circuit terminal portions 10A and 10B may be provided in the hall H on the floor below the uppermost floor.
In particular, since the emergency stop short-circuit circuits 4 and 5 and the brake release short-circuit circuits 6 and 7 are separately provided, the length of the wiring 7B of the brake release short-circuit circuits 6 and 7 can be extended. Accordingly, the manual short-circuit portion 7A and the short- circuit terminal portions 10A and 10B can be disposed at a floor distant from the control cabinet 8 positioned at the top of the hoistway 101. In order to obtain a larger braking torque when the brake is released, in the elevator apparatus in which the control panel 8 is disposed on the top of the hoistway 101, the manual short-circuit terminal portion 7A and the short- circuit terminal portions 10A and 10B are preferably disposed on the uppermost hall indicator box 9.
The manual short-circuiting terminal portion 7A and the short- circuiting terminal portions 10A and 10B are not necessarily arranged in the hall indicator case 9, but by arranging them in the hall indicator case 9 which is a conventional structure, the manual short-circuiting terminal portion 7A and the short- circuiting terminal portions 10A and 10B can be arranged with a simple structure.
In the present embodiment, the configuration in which the hoisting machine 105 including the hoisting motor 1 and the sheave 102 and the control cabinet 8 housing the control device 3 (see fig. 1) are disposed on the top of the hoistway 101 has been described, but the hoisting machine 105 and the control cabinet 8 need not be disposed on the top of the hoistway 101. The hoisting machine 105 and the control cabinet 8 do not necessarily have to be disposed at the same position in the hoistway 101. The present embodiment does not change in which position in the hoistway 101 the control panel 8 is disposed, and operability can be improved. However, this embodiment is particularly effective because the control cabinet 8 is not easily accessible when the control cabinet 8 is disposed on the top of the hoistway 101.
The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the present invention is not limited to the brake release circuit 11 shown in fig. 3, and can be applied.
Description of the reference numerals
1 … traction motor, 5 … automatic short-circuit part, 6 … short-circuit connector, 7 manual short-circuit part, 9 … hall indicator box, 10A, 10B … short-circuit terminal part, 11 … brake release circuit, 14 … brake release contactor coil, 18 … three-phase short-circuit release contactor coil.
Claims (6)
1. An elevator control device for using a braking torque obtained by short-circuiting a winding of a traction motor to three phases for braking a car, wherein the winding of the traction motor is connected to a three-phase alternating-current power supply via a control device, characterized in that:
different circuits are separately provided as the first short-circuit portion and the second short-circuit portion described below,
wherein the first short circuit portion is configured to generate the braking torque at the time of an emergency stop, the second short circuit portion is configured to generate the braking torque at the time of a rescue operation by releasing braking,
in the second short circuit portion, a three-phase winding short circuit terminal portion for causing a three-phase short circuit of a winding of the hoisting motor is disposed in a hall indicator box.
2. The elevator control apparatus according to claim 1, wherein:
the first short-circuit part is an automatic short-circuit part which is arranged in a control cabinet for accommodating the elevator control device and automatically operates when the elevator control device is in emergency stop,
the second short-circuit portion is a manual short-circuit portion that manually short-circuits the three-phase winding short-circuit terminal portion using a short-circuit connector.
3. The elevator control apparatus according to claim 2, comprising:
a contactor contact provided in the automatic short-circuit unit, for causing a three-phase short-circuit to occur in a winding of the traction motor; and
a three-phase short-circuit release contactor coil that is excited to open the contactor contacts,
the hall indicator box is provided with a three-phase short-circuit removing short-circuit terminal part which connects the three-phase short-circuit removing contactor coil with a power supply to excite the three-phase short-circuit removing contactor coil.
4. The elevator control apparatus according to claim 3, wherein:
when the rescue operation is performed by releasing the brake, the three-phase short-circuit releasing short-circuit terminal portion is short-circuited by the short-circuit connector to release the three-phase short-circuit by the first short-circuit portion, and the brake torque is generated by the three-phase short-circuit by the second short-circuit portion.
5. An elevator apparatus, characterized in that:
the hoistway is provided with:
a traction machine including a traction motor and a sheave;
a rope wound around the sheave; and
a car and a counterweight connected by the suspension cable,
the elevator apparatus includes the elevator control apparatus according to any one of claims 1 to 4.
6. An elevator arrangement according to claim 5, characterized in that:
a control cabinet for housing an elevator control device is disposed at the top in the hoistway.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/054279 WO2017141314A1 (en) | 2016-02-15 | 2016-02-15 | Elevator and control device for same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108463422A CN108463422A (en) | 2018-08-28 |
| CN108463422B true CN108463422B (en) | 2020-01-24 |
Family
ID=59624851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680079037.5A Expired - Fee Related CN108463422B (en) | 2016-02-15 | 2016-02-15 | Elevator and control device thereof |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3418233B1 (en) |
| JP (1) | JP6532965B2 (en) |
| CN (1) | CN108463422B (en) |
| WO (1) | WO2017141314A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714483A (en) * | 2010-01-21 | 2012-10-03 | 三菱电机株式会社 | Rescue operation device of elevator |
| CN103523624A (en) * | 2013-09-02 | 2014-01-22 | 日立电梯（中国）有限公司 | Backup rescue system of elevator |
| CN204528982U (en) * | 2015-03-20 | 2015-08-05 | 上海盖普电梯有限公司 | A kind of based on packaged type standby rescue power supply open band-type brake circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100621475B1 (en) * | 2002-07-10 | 2006-09-13 | 미쓰비시덴키 가부시키가이샤 | Controller of elevator |
| JP4827465B2 (en) * | 2005-09-01 | 2011-11-30 | 株式会社日立製作所 | Elevator equipment |
| JP2011063372A (en) * | 2009-09-16 | 2011-03-31 | Toshiba Elevator Co Ltd | Elevator system |
| FI121882B (en) * | 2009-11-02 | 2011-05-31 | Kone Corp | Brake device, electric drive and lift system |
| JP2012184043A (en) | 2011-03-03 | 2012-09-27 | Toshiba Elevator Co Ltd | Elevator apparatus |
| CN204454131U (en) * | 2015-02-09 | 2015-07-08 | 日立电梯（中国）有限公司 | A kind of plug and play deliverance apparatus of elevator |
-
2016
- 2016-02-15 JP JP2017567583A patent/JP6532965B2/en active Active
- 2016-02-15 CN CN201680079037.5A patent/CN108463422B/en not_active Expired - Fee Related
- 2016-02-15 WO PCT/JP2016/054279 patent/WO2017141314A1/en active Application Filing
- 2016-02-15 EP EP16890457.1A patent/EP3418233B1/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714483A (en) * | 2010-01-21 | 2012-10-03 | 三菱电机株式会社 | Rescue operation device of elevator |
| CN103523624A (en) * | 2013-09-02 | 2014-01-22 | 日立电梯（中国）有限公司 | Backup rescue system of elevator |
| CN204528982U (en) * | 2015-03-20 | 2015-08-05 | 上海盖普电梯有限公司 | A kind of based on packaged type standby rescue power supply open band-type brake circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3418233A4 (en) | 2019-11-13 |
| EP3418233A1 (en) | 2018-12-26 |
| WO2017141314A1 (en) | 2017-08-24 |
| JPWO2017141314A1 (en) | 2018-07-26 |
| EP3418233B1 (en) | 2020-07-29 |
| CN108463422A (en) | 2018-08-28 |
| JP6532965B2 (en) | 2019-06-19 |
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Granted publication date: 20200124 Termination date: 20220215 |