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Elevator control circuit

An elevator control and circuit technology, applied in the field of elevator control circuits, can solve the problems of low practicability, long time consumption and high installation cost

Active Publication Date: 2019-11-01
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] For example, the "single car door elevator door circuit detection" and "multiple car door elevator door circuit detection" methods directly borrow the releveling relay contacts. Although the structure is simple and the cost is low, the detection results cannot distinguish between car door locks or floor door lock failure
The "door circuit detection without safety circuit" method needs to be equipped with an independent power supply, and the additional safety relay is expensive; although the "door circuit detection with PESSRAL" method can independently detect car door locks and landing door locks, and distinguish Front and rear doors, but PESSRAL certification takes a long time, and the installation cost is also very high, so the practicability is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] as attached Figure 7-8 As shown, the invented elevator control circuit needs to be equipped with three safety relays, which are the re-leveling action relay 310, the car accidental movement protection relay 320, and the re-leveling status relay 330, wherein the coil 310.9 of the relay 310 has two ends Resistance capacitance element 311. The original equipment of the elevator matched with the invented control circuit has, the elevator safety circuit 100; the car door lock switch (NC contact) 110; The text / figure is equivalently simplified to a single switch); the upper re-leveling detection switch 130 and the lower re-leveling detection switch 140; the control board 200, including the controlled triode 201 and detection ports 210-242; the control power supply 400.

[0083] The car door lock switch 110 and the landing door lock switch 120 are connected in series in the safety circuit 100 and serve as a part thereof. The first normally open contact 310.01 of the levelin...

Embodiment 2

[0104] On the basis of Embodiment 1, Embodiment 2 has improved the safety circuit 100, which is to realize the door lock detection function on the 2D2G elevator, as shown in the attached Figure 9 shown.

[0105] 2D2G elevator is an elevator that can open doors on both sides at the same time, that is, it is equipped with front and rear car doors and front and rear landing doors at the same time. In the safety circuit 100, the (front) car door lock switch 111, the rear car door lock switch 112, the (front) landing door lock switch 121 and the rear landing door lock switch 122 are connected in series.

[0106] This improvement specifically involves that the first normally open contact 310.01 and the second normally open contact 310.02 of the releveling relay 310 are connected in series to the releveling bypass of the safety circuit 100 . The first normally closed contact 320.11 of the accidental car movement protection relay 320 is connected in series between the switches 111 a...

Embodiment 3

[0111] On the basis of Embodiment 1, Embodiment 3 improves the safety circuit 100, see attached Figure 10 .

[0112] When the elevator uses an asynchronous motor, the standard clearly requires that the brake of the traction machine cannot be used as a stopping device for the accidental movement of the car, so it is necessary to install a rope clamp.

[0113] Compared with the basic scheme, the changes involved in this improvement are reflected in that the power supply 400 supplies power to the action coil 501 of the rope clamp 500, and on this power supply circuit, the first normally closed contact 330.11 of the releveling state relay 330 and The second normally open contact 320.02 of the car accidental movement protection relay 320. The action contact 502 of the rope clamp 500 is connected in series to the safety circuit 100 .

[0114] The working principle of this improvement is consistent with the basic scheme in normal operation, door lock detection and car accidental m...

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Abstract

The invention discloses an elevator control circuit. The elevator control circuit comprises an elevator safety circuit, a lift car accidental movement protection relay, a releveling operation relay and a releveling state relay. According to the elevator control circuit, it is guaranteed that accidental movement of a lift car can be prevented, and the state of a door lock of a car door and the state of a door lock of a layer door can be precisely detected and distinguished. Furthermore, during detection, front and rear doors of an elevator are distinguished.

Description

technical field [0001] The invention relates to elevator operation safety technology, in particular to an elevator control circuit. Background technique [0002] The safety of elevators cannot be ignored all the time. With the increasing popularity of elevators, people's requirements for its safety are also increasing day by day. At present, with the revision of a batch of elevator standards and specifications, new requirements for car accidental movement and door lock circuit detection have been added to new elevators. But this has greatly increased the cost of new elevators, increasing the production pressure of manufacturers and the financial burden of customers. [0003] In the No. 1 revision of the elevator standard GB7588-2003, the requirements for the protection (UCMP) device to prevent accidental movement of the car are added (Article 9.11). When the landing door is not locked and the car door is not closed, the elevator shall have the means to prevent the accident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/06B66B1/34B66B5/02
CPCB66B1/06B66B1/3423B66B5/02
Inventor 刘文晋张磊张皓然
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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