CN115461298A - Door device of elevator - Google Patents
Door device of elevator Download PDFInfo
- Publication number
- CN115461298A CN115461298A CN202080100336.9A CN202080100336A CN115461298A CN 115461298 A CN115461298 A CN 115461298A CN 202080100336 A CN202080100336 A CN 202080100336A CN 115461298 A CN115461298 A CN 115461298A
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- CN
- China
- Prior art keywords
- door
- elevator
- brake
- contact
- motor
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Provided is a door device of an elevator, which can easily open the door when power failure occurs. The door device of an elevator comprises: an electromagnetic brake provided with a resistor, which, when a power supply device of an elevator door is disconnected, disconnects a circuit between an elevator door motor and the power supply device, and forms a brake circuit as a closed circuit provided with the resistor and the door motor; and a brake release device including a mechanical switch that mechanically switches a release contact, wherein the brake circuit is opened by switching the release contact when the mechanical switch is operated.
Description
Technical Field
The present invention relates to a door device of an elevator.
Background
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open publication No. 2003-261281
Disclosure of Invention
Problems to be solved by the invention
However, in the door device described in patent document 1, when the door motor performs an opening operation, an energy-consuming braking force is generated. Therefore, to open the door, a greater force is required.
The present invention has been made to solve the above problems. The invention aims to provide a door device of an elevator, which can easily open the door when power is off.
Means for solving the problems
The door device of an elevator of the present invention comprises: an electromagnetic brake including a resistor, which, when a power supply device of an elevator door is disconnected, disconnects a circuit between a door motor of the elevator and the power supply device, and forms a brake circuit as a closed circuit including the resistor and the door motor; and a brake release device including a mechanical switch that mechanically switches a release contact, wherein the brake circuit is opened by switching the release contact when the mechanical switch is operated.
Effects of the invention
According to the present invention, the door device of the elevator includes a brake releaser that opens the brake circuit by switching the release contacts. Therefore, the door can be easily opened at the time of power failure.
Drawings
Fig. 1 is a diagram showing an elevator door apparatus according to embodiment 1.
Fig. 2 is a diagram showing a drive control device of an elevator door device according to embodiment 1.
Fig. 3 is a diagram showing a brake release button of an elevator door device according to embodiment 2.
Detailed Description
A mode for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Repeated explanation of this portion is appropriately simplified or omitted.
Fig. 1 is a diagram showing an elevator door apparatus according to embodiment 1.
In the elevator of fig. 1, a hoistway, not shown, penetrates each floor of a building, not shown. Each of the plurality of landings 1 is provided on each floor of a building. Each of the landings 1 faces the hoistway. The car 2 is installed inside the hoistway. In fig. 1, a car 2 is in a state of being parked at one of a plurality of landings 1.
For example, the landing doors 3 are a landing door 3a and a landing door 3b. Each of the landing doors 3 is provided as an elevator door at a landing entrance of each floor.
The landing door 3a is provided to be movable in the left-right direction. The landing door 3b is provided to be movable in the left-right direction. In fig. 1, the left direction is a direction toward the left side of the paper. The right direction is a direction toward the right side of the paper.
The door guide rails 4 are provided to the landing doors 3. The door rail 4 is provided above the landing door 3a and the landing door 3b. The door rails 4 are arranged in parallel in the left-right direction.
The door hanger 5a is provided on the upper surface of the landing door 3 a. The door hanger 5a is connected to the door rail 4. The door hanger 5a moves in the left and right direction along the door rail 4.
The door hanger 5b is provided on the upper surface of the landing door 3b. The door hanger 5b is connected to the door rail 4. The door hanger 5b moves in the left and right direction along the door rail 4.
A pair of pulleys 6 is provided for each of the landing doors 3.
For example, the door rope 7 is a looped cable (wire). The door rope 7 is wound around each of the pair of pulleys 6. The door rope 7 includes a rope upper portion 7a and a rope lower portion 7b between the pair of pulleys 6.
The door rope 7 is connected to the door hanger 5a at a rope upper portion 7 a. The door rope 7 moves in synchronization with the door hanger 5a in the left-right direction. The door rope 7 is connected to the door hanger 5b at a rope lower portion 7b. The door rope 7 moves in synchronization with the door hanger 5b in the left-right direction.
The door closer 8 includes a door closer weight 8a, a door closer pulley 8b, and a door closer rope 8c. The door closer 8 applies a force in the closing direction to the landing doors 3a and 3b.
The door closer weights 8a are provided to the plurality of landing doors 3, respectively. For example, the door closer weight 8a is provided to be movable in the vertical direction.
The door closer pulley 8b is provided rotatably above the door closer 8 a.
One end of the door closer rope 8c is connected to the upper end of the door closer weight 8 a. The other end of the door closer rope 8c is connected to the rope lower portion 7b. A door closer rope 8c is wound around the door closer pulley 8 b.
The closer rope 8c applies a force downward from the closer weight 8 a. The closer rope 8c applies a force equal to the force to the left direction to the rope lower portion 7b. The door closer rope 8c applies a force in the closing direction to the landing doors 3a and 3b via the rope lower portion 7b.
The car 2 includes car doors 10a and 10b, a safety face (safety face) 11, and a drive control device 20.
The car door 10a faces the landing door 3 a. The car door 10b faces the landing door 3b.
The safety touch panel 11 includes a lever 11a, a plurality of links 11b, and a detector 11c. For example, the safety touch panel 11 is provided to the car door 10b.
The lever 11a is provided at the left end of the car door 10b to be movable left and right. A part of the lever 11a protrudes leftward from the car door 10b.
The plurality of links 11b are connected to the rods 11a, respectively. The plurality of links 11b support the rod 11a to be movable leftward and rightward. For example, the plurality of links 11b move in synchronization with the rod 11 a.
The detector 11c is connected to one of the plurality of links 11 b. The detector 11c detects the operation of the plurality of links 11 b. The detector 11c detects the movement of the lever 11a by the plurality of links 11 b.
For example, the drive control device 20 is provided on the upper portion of the car 2. The drive control device 20 is electrically connected to the detector 11c. The drive control device 20 drives the car doors 10a and 10b in the left-right direction. The drive control device 20 controls the opening and closing operations of the car doors 10a and 10b.
The door device 100 includes a plurality of landing doors 3, door closers 8, car doors 10a, 10b, a security door 11, and a drive control device 20.
When the car 2 stops at one of the landings 1, the landing door 3 is mechanically connected to the car door 10a and the car door 10b. In this case, the landing door 3a is opened and closed in conjunction with the car door 10 a. In this case, the landing door 3b is opened and closed in conjunction with the car door 10b.
For example, when a power failure occurs during the opening/closing operation of the car doors 10a and 10b, the drive control device 20 does not apply a force in the opening direction to the car doors 10a and 10b. The landing doors 3a and 3b are closed by a force in the closing direction of the door closer 8. The car doors 10a and 10b perform closing operation in conjunction with the landing doors 3a and 3b.
Next, the drive control device 20 will be described with reference to fig. 2.
Fig. 2 is a diagram showing a drive control device of an elevator door device according to embodiment 1. Fig. 2 shows a simple circuit for driving the control device 20.
As shown in fig. 2, the drive control device 20 includes a door motor 21, an inverter 22, a power supply device 23, a phase measuring device 24, a current measuring device 25a, a current measuring device 25b, a door opening detector 26, a door closing detector 27, and a door controller 28.
The door motor 21 is a rotary motor using a permanent magnet. The door motor 21 is, for example, a permanent magnet type synchronous motor. For example, the door motor 21 is driven using three-phase alternating current. The door motor 21 drives the car doors 10a and 10b.
The inverter 22 is a frequency converter. The inverter 22 is electrically connected to the door motor 21. When an ac current flows, the inverter 22 causes the frequency-converted three-phase ac current to flow to the door motor 21.
The power supply device 23 is electrically connected to the inverter 22. The power supply device 23 causes an alternating current to flow to the inverter 22. The power supply device 23 does not flow a current when the power supply of the elevator is cut off.
The phase detector 24 is connected to the rotation shaft of the door motor 21. The phase measuring device 24 measures the rotational phase of the rotary shaft of the door motor 21.
The current detector 25a is electrically connected to one of the wires between the door motor 21 and the inverter 22. The current measuring device 25a measures a current value flowing between the gate motor 21 and the inverter 22. The current measuring device 25b is electrically connected to the following wires: the lead wire is different from the lead wire connected to the current measuring device 25a between the door motor 21 and the inverter 22. The current measuring device 25b measures a current value flowing between the gate motor 21 and the inverter 22.
For example, the door opening detector 26 detects that the car doors 10a and 10b are present at the fully open position.
For example, the door-closing detector 27 detects that the car doors 10a and 10b are present at the fully-closed position.
The door controller 28 is electrically connected to the inverter 22, the phase measuring device 24, the current measuring device 25a, the current measuring device 25b, the door opening detector 26, and the door closing detector 27.
The door controller 28 obtains information of the rotational phase of the rotary shaft of the door motor 21 from the phase measuring device 24. The door controller 28 obtains information of the value of the current flowing between the door motor 21 and the inverter 22 from the current measuring device 25a and the current measuring device 25 b. The door controller 28 acquires information related to the opened state of the car doors 10a and 10b from the door opening detector 26. The door controller 28 acquires information on the closed states of the car doors 10a and 10b from the door closing detector 27.
The gate controller 28 controls the inverter 22. The gate controller 28 controls the frequency of the alternating current converted by the inverter 22. The door controller 28 controls the opening and closing operations of the car doors 10a and 10b by the inverter 22.
The gate device 100 includes an electromagnetic brake 30 and a brake release device 40.
The electromagnetic brake 30 includes an electromagnetic contactor 31, a resistor 32a, a resistor 32b, and a resistor 32c. The electromagnetic brake 30 is provided in the drive control device 20.
The electromagnetic contactor 31 includes a 1 st braking contact 31a, a 2 nd braking contact 31b, and a 2 nd braking contact 31c. The electromagnetic contactor 31 is electrically connected to the power supply device 23. The electromagnetic contactor 31 causes a current to flow from the power supply device 23.
The electromagnetic contactor 31 is in an excited state when a current flows. Electromagnetic contactor 31 is in an unexcited state when current does not flow.
The 1 st braking contact 31a is electrically provided between the inverter 22 and the power supply device 23. In the case where the electromagnetic contactor 31 is in the energized state, the 1 st braking contact 31a is in the closed state. In the case where the electromagnetic contactor 31 is in the non-excited state, the 1 st brake contact 31a is in the open state.
The 2 nd braking contact 31b is electrically connected between the door motor 21 and the inverter 22. In the case where the electromagnetic contactor 31 is in the energized state, the 2 nd braking contact 31b is in the open state. In the case where the electromagnetic contactor 31 is in the non-excited state, the 2 nd braking contact 31b is in the closed state.
The 2 nd braking contact 31c is electrically connected between the door motor 21 and the inverter 22. In the case where the electromagnetic contactor 31 is in the energized state, the 2 nd braking contact 31c is in the open state. In the case where the electromagnetic contactor 31 is in the non-excited state, the 2 nd braking contact 31c is in the closed state.
The resistor 32a is electrically connected between the door motor 21 and the inverter 22. The resistor 32b is electrically connected between the door motor 21 and the inverter 22. The resistor 32c is electrically connected between the door motor 21 and the inverter 22.
When the electromagnetic contactor 31 is in the excited state, the inverter 22 and the power supply device 23 form a closed circuit. When the electromagnetic contactor 31 is in the non-excited state, the 1 st braking contact 31a opens the closed circuit.
In the case where the electromagnetic contactor 31 is in the excited state, the door motor 21 does not constitute a closed circuit with any of the resistor 32a, the resistor 32b, and the resistor 32c. With the electromagnetic contactor 31 in the unexcited state, the door motor 21 constitutes a closed circuit with the resistor 32a, the resistor 32b, and the resistor 32c. This closed circuit is called a braking circuit.
When the electromagnetic contactor 31 is in the non-excited state, the inverter 22 does not flow an alternating current to the door motor 21. With the electromagnetic contactor 31 in the non-excited state, the door motor 21 constitutes a braking circuit. When the brake circuit is configured in a state where no ac current flows through the door motor 21, the door motor 21 supplies an energy-consuming braking force acting in a direction to decelerate the rotating shaft to the rotating shaft.
The brake release 40 includes release contacts 41a, 41b, and a mechanical shutter 42. The brake release device 40 is electrically connected to the drive control device 20.
For example, the release contact 41a is an a-contact. For example, the release contact 41a is provided between the 2 nd braking contact 31b and the resistor 32 a. The release contact 41a is in a closed state without being operated. The release contact 41a is in an open state when operated.
For example, the release contact 41b is an a-contact. For example, the release contact 41b is provided between the 2 nd braking contact 31c and the resistor 32c. The release contact 41b is in a closed state without being operated. The release contact 41b is in an open state when operated.
The mechanical shutter 42 is a momentary (mometary) type switch. For example, the mechanical shutter 42 is provided to the detector 11c not shown. For example, the mechanical shutter 42 is connected to 1 of the plurality of links 11 b. For example, the mechanical shutter 42 is in an operating state when the lever 11a is pushed in. When the mechanical shutter 42 is in the operating state, the release contact 41a and the release contact 41b are operated. When the mechanical shutter 42 is in the operating state, the release contact 41a and the release contact 41b are in the open state.
For example, in the case where the mechanical shutter 42 is in the operated state, the brake remover 40 switches the release contact 41a and the release contact 42b to the open state. With the mechanical shutter 42 in the operating state, the brake releaser 40 opens the brake circuit.
According to embodiment 1 described above, the door device 100 of the elevator includes the electromagnetic brake 30 and the brake releaser 40. When the power supply device 23 is turned off, the electromagnetic brake 30 disconnects the electric circuit between the door motor 21 and the power supply device 23. The electromagnetic brake 30 forms a braking circuit as a closed circuit of the resistors 32a, 32b, 32c and the door motor 21 when the power supply device 23 is turned off. The brake release 40 includes release contacts 41a and 41b and a mechanical shutter 42. The brake releaser 40 opens the brake circuit when the mechanical shutter 42 is operated. Therefore, when external force is applied to the car door 10a and the car door 10b to open the doors in the power failure state, if the mechanical shutter 42 is operated, the door motor 21 does not generate the dynamic braking force. As a result, the car door can be easily opened at the time of power failure.
Further, a brake release 40 is connected to the safety touch panel 11. When the lever 11a of the safety touch panel 11 is pressed, the mechanical shutter 42 is in an operating state. Therefore, the mechanical shutter 42 can be easily operated.
Fig. 3 is a diagram showing a brake release button of an elevator door device according to embodiment 2. The same or corresponding portions as those in embodiment 1 are denoted by the same reference numerals. The description of this portion is omitted.
The car 2 not shown in fig. 3 is provided with a maintenance tool 50.
The maintenance tool 50 is provided at an upper portion of the car 2. The maintenance tool 50 is electrically connected to the brake release 40, which is not shown in fig. 3. The maintenance tool 50 is operated by a worker at the time of maintenance inspection of the elevator.
The gate device 100 not shown in fig. 3 includes a brake release button 60.
For example, the brake release button 60 is an alternate (alternate) switch. The brake release button 60 is connected to the brake releaser 40. For example, the brake release button 60 is provided in the maintenance tool 50.
For example, the brake release button 60 is pressed to switch between an on state and an off state. When the brake release button 60 is in the on state, the mechanical shutter 42 is put into the operating state. When the brake release button 60 is in the off state, the mechanical shutter 42 not shown in fig. 3 is not put into the operating state.
According to embodiment 2 described above, the door device 100 includes the brake release button 60. When pressed, the brake release button 60 operates the mechanical shutter 42. Therefore, the mechanical shutter 42 can be easily operated.
The brake release button 60 may be a momentary switch.
The brake release button 60 may be provided in a place other than the maintenance tool 50. For example, the brake release button 60 is provided on an operation panel inside the car 2. For example, the brake release button 60 is provided outside the car 2 in the vicinity of the car door 10a or the car door 10b not shown in fig. 3.
Industrial applicability
As described above, the door device of an elevator according to the present invention can be used in an elevator system.
Description of the reference symbols
1: landing: 2: a car; 3a, 3b: a landing door; 4: a door guide rail; 5: a door hanger; 6: a pulley; 7: a door rope; 8: a door closer; 8a: a door closer counterweight; 8b: a door closer pulley; 8c: a door closer cord; 10a, 10b: a car door; 11: a safety touch panel; 11a: a rod; 11b: a connecting rod; 11c: a detector; 20: a drive control device; 21: a door motor; 22: an inverter; 23: a power supply device; 24: a phase determinator; 25a, 25b: a current measuring device; 26: a door opening detector; 27: a door closing detector; 28: a door controller; 30: an electromagnetic brake; 31: an electromagnetic contactor; 31a: 1 st braking contact; 31b, 31c: a 2 nd braking contact; 32a, 32b, 32c: a resistor; 40: a brake release device; 41a, 41b: releasing the contact; 42: a mechanical shutter; 50: a maintenance tool; 60: a brake release button; 100: a door device.
Claims (3)
1. An elevator door device, comprising:
an electromagnetic brake provided with a resistor, which, when a power supply device of an elevator door is disconnected, disconnects a circuit between a door motor of the elevator and the power supply device, and forms a braking circuit as a closed circuit provided with the resistor and the door motor; and
and a brake release device that includes a mechanical switch that mechanically switches a release contact, and that opens the brake circuit by switching the release contact when the mechanical switch is operated.
2. The door device of an elevator according to claim 1,
the brake release is connected to a safety contact of the elevator, and the mechanical shutter is operated in the case where the safety contact is pressed.
3. The door device of an elevator according to claim 1 or 2,
the door device of the elevator is provided with a brake release button which is connected with the brake releaser and operates the mechanical shutter when the brake release button is pressed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2020/018734 WO2021225000A1 (en) | 2020-05-08 | 2020-05-08 | Elevator door device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115461298A true CN115461298A (en) | 2022-12-09 |
Family
ID=78468059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080100336.9A Pending CN115461298A (en) | 2020-05-08 | 2020-05-08 | Door device of elevator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115461298A (en) |
| WO (1) | WO2021225000A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03106788A (en) * | 1989-09-20 | 1991-05-07 | Hitachi Ltd | Door control device for elevator |
| CN1110956A (en) * | 1994-05-31 | 1995-11-01 | 三菱电机株式社 | Unit for controlling elevator door |
| JP2003261281A (en) * | 2002-03-12 | 2003-09-16 | Mitsubishi Electric Corp | Door device for elevator |
| JP2006299549A (en) * | 2005-04-18 | 2006-11-02 | Fuji Electric Systems Co Ltd | Door device for vehicle |
| JP2012076862A (en) * | 2010-09-30 | 2012-04-19 | Toshiba Elevator Co Ltd | Door control device of elevator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015009954A (en) * | 2013-06-28 | 2015-01-19 | 株式会社日立ビルシステム | Door controller for elevator |
-
2020
- 2020-05-08 WO PCT/JP2020/018734 patent/WO2021225000A1/en active Application Filing
- 2020-05-08 CN CN202080100336.9A patent/CN115461298A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03106788A (en) * | 1989-09-20 | 1991-05-07 | Hitachi Ltd | Door control device for elevator |
| CN1110956A (en) * | 1994-05-31 | 1995-11-01 | 三菱电机株式社 | Unit for controlling elevator door |
| JP2003261281A (en) * | 2002-03-12 | 2003-09-16 | Mitsubishi Electric Corp | Door device for elevator |
| JP2006299549A (en) * | 2005-04-18 | 2006-11-02 | Fuji Electric Systems Co Ltd | Door device for vehicle |
| JP2012076862A (en) * | 2010-09-30 | 2012-04-19 | Toshiba Elevator Co Ltd | Door control device of elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021225000A1 (en) | 2021-11-11 |
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