Elevator door control

专利摘要:
The present invention relates to an elevator door control device, the prior art, the door used in the elevator is made of steel, the weight is about 100 ~ 350Kg injuries to passengers boarding with the inertial force that is closed when a power failure when the door is closed In order to prevent this, the power supply detects an abnormal power supply to supply power in case of power failure by using a DC auxiliary power supply or a large capacity condenser. When the DC voltage is applied, if the DC voltage is large, the induction motor can be burned out. On the contrary, if the DC voltage is small, there is a problem in that the force for maintaining the closed state is reduced. Accordingly, the present invention has been made to solve the above conventional problems, single-phase or three-phase AC power supply (1); A rectifier (2) for converting the output of the single-phase or three-phase AC power source (1) into DC; A smoothing part 3 for smoothing the DC voltage; An inverter (4) for outputting a DC at a variable frequency voltage by the modulation signal; The magnetic poles are alternately arranged like the NSNS on the rotor and three-phase windings are placed on the stator side to generate a magnetic field in the air gap of the stator and the rotor so that the magnetic pole of the rotor rotates along the magnetic field to generate voltage. A synchronous motor 20; A position detector (6) for detecting a position of the synchronous motor (20); An operation control unit 7 for controlling the operation of the elevator door control device; A braking resistor 30 connected to the stator side of the synchronous motor 20 to consume regenerative energy generated during braking; By providing a device composed of a switch 40 for transmitting or blocking the regenerative energy to the braking resistor 20 by turning the contact on / off, a sudden stop without free running the door by inertia when the door is closed It is possible to protect the passengers to board, and also to obtain a large lock (Lock) torque has the effect that can easily obtain a fully closed state while driving the car.
公开号:KR19990074209A
申请号:KR1019980007643
申请日:1998-03-07
公开日:1999-10-05
发明作者:송준호
申请人:이종수；엘지산전 주식회사；
IPC主号:

专利说明:

Elevator door control
The present invention relates to an elevator door control device, and in particular, by applying a permanent magnet synchronous motor to the drive source of the door device to maintain the braking and closing state of the door by using the dynamic brake of the synchronous motor in case of power failure, thereby promoting passenger safety. It relates to an elevator door control device.
The elevator is a transportation means of the building and above all, reliability and safety should be considered as the top priority, Figure 1 is a block diagram showing the configuration of a conventional elevator door control device, as shown in the single-phase or three-phase AC power source (1) ; A rectifier 2 for converting the output of the single-phase or three-phase AC power source 1 into direct current (hereinafter referred to as "DC"); A smoothing part 3 for smoothing the DC voltage; An inverter (4) for outputting a DC at a variable frequency voltage by the modulation signal; An induction motor 22 driven by the output of the inverter 4; A position detector (5) for detecting the position of the induction motor (22); It consists of an operation control part 6 which controls the operation of an elevator door control apparatus.
Figure 2 is a front view showing the configuration of a conventional elevator door control device, as shown in the door 20 is installed in the doorway of the elevator car; A door control panel 21 controlling opening and closing of the door 20; An induction motor 22 which is a driving force for opening and closing the door 20; An electric motor pulley 23 connected thereto; A deceleration pulley (24) for increasing the torque of the electric motor pulley (23); A rubber belt 25 connecting the electric motor pulley 23 and the reduction pulley 24; A chain pulley 26 for converting the rotational movement of the deceleration pulley 24 into the opening and closing linear movement of the door 20; A chain 27 connecting the crank 28, the reduction pulley 24 and the chain pulley 26; A connection link 29 connecting the crank 28 and the arm 30; The roller 31 connected to the arm 30 is configured as a rail 32 to move left and right to open and close the door 20, the operation process of the conventional device configured as described above is as follows.
In FIG. 2, the inverter 4 embedded in the door control panel 21 generates the voltage and the frequency according to the absolute position detected by the position detector 5 of FIG. 1 to drive the induction motor 22, and the deceleration pulley 24. ) And finally, the door 20 is controlled. In the door control panel 21, the configuration of FIG. 1 is incorporated to form a single control plate 7.
As described above, the conventional door used in the elevator is made of steel, the weight is about 100 ~ 350Kg may cause injury to the passengers boarding with the inertial force that is closed when the door is closed when the power failure, to prevent this In order to detect power failure and supply power in case of power failure by using DC auxiliary power or large capacity condenser, it costs additional cost and applies a predetermined DC voltage to induction motor to maintain the closed state when the door is closed. If the DC voltage is large, the induction motor can be burned out. On the contrary, if the DC voltage is small, there is a problem in that the force for maintaining the closed state is reduced.
Therefore, the present invention was devised to solve the above-mentioned problems, and the braking and closing state of the door is maintained by using the dynamic brake of the synchronous motor in case of power failure by applying the permanent magnet type synchronous motor as the driving source of the door device. It is an object of the present invention to provide a device for the purpose.
1 is a block diagram showing the configuration of a conventional elevator door control device.
Figure 2 is a front view showing the configuration of a conventional elevator door control device.
Figure 3 is an exemplary view showing the configuration of the elevator door control apparatus of the present invention.
4 is a cross-sectional view showing the configuration of a synchronous motor in FIG.
*** Description of the symbols for the main parts of the drawings ***
1: AC power supply 2: rectifier
3: smoothing part 4: inverter
5: speed detection unit 6: operation control unit
7: control panel 20: door
21: door control panel 22: induction motor
23: electric motor pulley 24: deceleration pulley
25: rubber belt 26: chain pulley
27: Chain 28: Crank
30: arm 31: roller
32: rail 40: synchronous motor
41: rotor 42: permanent magnet
43: stator 44: three-phase winding
45: frame 46: axis
In order to achieve the above object, the configuration of the present invention alternately arranges magnetic poles on the rotor, like NSNS, and arranges three-phase windings on the stator side to generate a magnetic field in the air gap of the stator and the rotor. A synchronous motor for generating a voltage while the magnetic pole rotates along its rotor field; A braking resistor connected to the stator side of the synchronous motor to consume regenerative energy generated during braking; And a switch for transmitting or blocking the regenerative energy to the braking resistor by turning on / off a contact.
Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
Figure 3 is an exemplary view showing the configuration of the elevator door control device of the present invention, as shown therein single-phase or three-phase AC power supply (1); A rectifier (2) for converting the output of the single-phase or three-phase AC power source (1) into DC; A smoothing part 3 for smoothing the DC voltage; An inverter (4) for outputting a DC at a variable frequency voltage by the modulation signal; The magnetic poles are alternately arranged on the rotor 41 like NSNS, and the three-phase winding 44 is disposed on the stator 43, and a rotor field is generated in the air gap between the stator 43 and the rotor 41. A synchronous motor 40 for generating a voltage while the magnetic pole of 41 is rotated along the rotor magnetic field; A position detector (5) for detecting the position of the synchronous motor (40); An operation controller 6 for controlling the operation of the elevator door controller; A braking resistor 50 connected to the stator side of the synchronous motor 40 to consume regenerative energy generated during braking; It consists of a switch 60 for transmitting or blocking the regenerative energy to the braking resistor 50 by turning the contact on / off.
4 is a cross-sectional view showing the configuration of the synchronous motor in FIG. 3, unlike the induction motor, as shown in FIG. 4, a permanent magnet 42 is attached to the magnetic pole of the rotor 41, and a three-phase winding is attached to the stator 43. (44) was placed.
Referring to the operation process and effect of the embodiment according to the present invention configured as described above are as follows.
In FIG. 3, when an abnormality (outage and low voltage) occurs in the AC power supply 1, the operation control unit 6 detects an output voltage of the smoothing unit 3 and detects a power supply abnormality. If it is within the normal operation by judging the power outage, and if it is more than a predetermined time judges that the power outage to short the synchronous motor input stage, or by turning on the contact of the switch 60, the stator of the synchronous motor 40 The side and the braking resistor 50 are connected to consume regenerative energy at the braking resistor 50. The synchronous motor 40 has the synchronous motor 40 because a permanent magnet (not shown) holds magnetic energy. If forced to rotate to act as a generator according to the "Fleming's right hand law", as described above, if the regenerative energy consumption by the braking resistor 50 or the synchronous motor input stage is shortened, the generated energy is consumed and braked. This is called a "dynamic brake", and this allows the passengers to be protected by sudden stop without free running the door due to inertia when the door is closed. In addition, a large lock torque can be obtained, so that the vehicle can be easily closed while driving.
As described above, the elevator door control device of the present invention applies the permanent magnet type synchronous motor to the drive source of the door device to maintain the braking and closing state of the door by using the dynamic brake of the synchronous motor during power failure, thereby inertia when the door is closed. It is possible to protect the occupants by suddenly stopping the door without free running, and also to obtain a large lock torque, so that it is possible to easily maintain a fully closed state while driving the car.

权利要求:
Claims (1)
[1" claim-type="Currently amended] The magnetic poles are alternately arranged like the NSNS on the rotor and three-phase windings are placed on the stator side to generate a magnetic field in the air gap of the stator and the rotor so that the magnetic pole of the rotor rotates along the magnetic field to generate voltage. A synchronous motor; A braking resistor connected to the stator side of the synchronous motor to consume regenerative energy generated during braking; Elevator door control device characterized in that it comprises a switch for transmitting or blocking the regenerative energy to the braking resistor by turning the contact on / off.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1998-03-07|Application filed by 이종수, 엘지산전 주식회사

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1998-03-07|Priority to KR1019980007643A

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1999-10-05|Publication of KR19990074209A

优先权:

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申请号 | 申请日 | 专利标题

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KR1019980007643A|KR19990074209A|1998-03-07|1998-03-07|Elevator door control|