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Elevator control detection circuit

A detection circuit, elevator control technology, applied in the field of elevator operation safety

Active Publication Date: 2020-11-10
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the board has an attached figure 1 And attached figure 2 same technical problem

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] as attached Figure 7-8 As shown, the invented elevator control detection circuit needs to be equipped with four safety relays, namely the first leveling state relay 310 , the second leveling state relay 320 , the leveling state intermediate relay 330 , and the door lock detection protection relay 340 . In addition, a common control relay is configured, which is the re-leveling start relay 350 . 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 output port 205 and the detection ports 210-260.

[0096] 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 co...

Embodiment 2

[0120] The difference between the circuit of this embodiment and the first embodiment is that the second normally open contact 350.02 of the re-leveling start relay 350 is moved from the power supply circuit of the coil 330.9 of the leveling state intermediate relay 330 to the coil of the first leveling state relay 310 310.9 and the coil 320.9 of the second leveling state relay 320 have a common circuit, see the attached Figure 9 .

[0121] The only difference between the working principle of the circuit in this embodiment and the first embodiment is that the intermediate relay 330 in the leveling state is always closed when the elevator is running, instead of After the relay 350 is closed, it will be closed (item 7) in the attached table 1), but in the subsequent action sequence, when the normally closed contacts 310.11 and 320.11 are disconnected, the relay 350 and item 8) in the attached table 1 Same, release when power off.

Embodiment 3

[0123] On the basis of Embodiment 2, the improvement of this embodiment is that the re-leveling start relay 350 is canceled, and its normally open contacts 350.02 and 350.01 are respectively carried by two first and second boards with the same action on the main control board 200. Relays 201 and 202 replace, see attached Figure 10 . When the re-leveling action (or door lock detection) needs to be started, the onboard relays 201 and 202 on the main control board 200 are turned on. The operating principle of the circuit of this embodiment is the same as that of the second embodiment.

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Abstract

The invention discloses an elevator control detection circuit. The elevator control detection circuit comprises a door lock bypass and detection circuit and a control circuit, the door lock bypass anddetection circuit is a part of an elevator safety circuit, the door lock bypass and detection circuit is composed of normally-open contacts of a first level state relay and a second level state relay, and normally-closed contacts of a level state intermediate relay and a door lock detection protective relay, and the control circuit is used for performing power-on and power-off control and state feedback on coils of the above four relays by using the contact combinations of the above four relays. According to the elevator control detection circuit, a small amount of relays are adopted, so thathigh-safety car accidental movement protection and high-recognition-degree door lock detection functions are realized at the same time, and the elevator control detection circuit has the quite high cost performance.

Description

technical field [0001] The invention relates to elevator operation safety technology, in particular to an elevator control detection 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 th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02B66B5/00
CPCB66B5/00B66B5/027
Inventor 刘文晋张磊
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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