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elevator safety system

A safety system and elevator technology, which is applied in the field of elevator control, can solve problems such as the inability of elevators to brake safely, and achieve the effects of reducing personnel injuries, facilitating troubleshooting, and reducing the number of contacts

Active Publication Date: 2021-08-03
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This safety system with a safety bus only involves the information collection of elevator safety devices and the disconnection of the safety loop, and does not involve the transmission of various operating states such as emergency electric operation and maintenance operation to the safety controller through the safety bus
At the same time, the safety system only informs the elevator driving and braking unit of the unsafe state, and the unit performs the safe braking operation of the elevator. No matter how the unsafe state is sent to the driving and braking unit of the elevator, there is a greater risk , the elevator may not brake safely

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 1 As shown, the elevator safety system includes a safety evaluation unit 1, a first serial bus 4, a car safety node 2, an emergency electric running device 6 and a car top maintenance running device 7;

[0060] The safety evaluation unit 1 communicates with the car safety node 2 through the first serial bus 4, communicates with the control cabinet 21 through the second serial bus 5, and connects the emergency electric running device 6 through the wiring harness;

[0061] The car safety node 2 is connected to the car top inspection and running device 7 through a wiring harness;

[0062] The car safety node 2 receives the car top inspection operation function signal, the car top inspection uplink confirmation signal and the car top inspection downlink confirmation signal from the car top inspection operation device 7, and sends them to the security system via the first serial bus 4. Assessment unit 1;

[0063] The emergency electric running device 6 is co...

Embodiment 2

[0076] Based on Example 1, such as image 3 As shown, the elevator safety system also includes a machine room safety device 10 and a hoistway upper safety device 13;

[0077] The safety evaluation unit 1 is respectively connected to the safety device 10 in the machine room and the safety device 13 in the upper part of the hoistway through the wiring harness.

[0078] Preferably, the safety evaluation unit 1 is based on the emergency electric running function signal from the emergency electric running device 6, the emergency electric running upward confirmation signal and the emergency electric running downward confirmation signal, and the car top inspection signal from the car safety node 2. The operation function signal, the upward confirmation signal of the car top inspection and the downward confirmation signal of the car top inspection, as well as the status of the safety device 10 in the machine room and the status of the safety device 13 in the upper part of the hoistway...

Embodiment 3

[0080] Based on Example 1, such as Figure 5 , Figure 6 As shown, the elevator safety system also includes a pit safety node 3 and a pit maintenance operation device 9;

[0081] The safety evaluation unit 1 communicates with the pit safety node 3 through the first serial bus 4;

[0082] The pit safety node 3 is connected to the pit maintenance operating device 9 through a wiring harness;

[0083] The pit safety node 3 receives the pit maintenance operation function signal / , the pit maintenance uplink confirmation signal and the bottom pit maintenance downlink confirmation signal from the pit maintenance operation device 9, and sends it to Safety Assessment Unit 1.

[0084] Preferably, the safety evaluation unit 1 is based on the emergency electric running function signal from the emergency electric running device 6, the emergency electric running upward confirmation signal and the emergency electric running downward confirmation signal, and the car top inspection signal f...

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PUM

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Abstract

The invention discloses an elevator safety system. The safety evaluation unit communicates with the car safety node through the first serial bus, communicates with the control cabinet through the second serial bus, and connects the emergency electric running device through the wiring harness; the car safety node passes through The wiring harness is connected to the car top inspection and running device; the car safety node receives the car top inspection running function signal, the car top inspection up confirmation signal and the car top inspection down confirmation signal from the car top inspection and operation device, and sends them through the first serial bus Send to the safety evaluation unit; the emergency electric running device is used to send the emergency electric running function signal, the emergency electric running up confirmation signal and the emergency electric running down confirmation signal to the safety evaluation unit. The elevator safety system of the present invention has concise and clear circuits, reduces the number of contacts, reduces the cost and also reduces the risk of failure, and can diagnose the state of the switch or button contacts.

Description

technical field [0001] The invention relates to elevator control technology, in particular to an elevator safety system. Background technique [0002] The standards prevailing in the elevator industry include: GB 7588-2003 and its No. 1 amendment, EN 81-20:2014. [0003] The elevator standard stipulates that the elevator must have: emergency electric operation (if necessary), car top inspection operation, pit inspection operation (specified in EN81-20:2014), inspection platform inspection operation (if necessary) and car inspection operation (if necessary) required) and other operating states. After entering the above running state, the elevator safety circuit will be disconnected and maintained until the corresponding running button is activated. [0004] For the relationship between emergency electric operation and various inspection operations, the elevator standard stipulates that the priority of inspection operation is higher than that of emergency electric operation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/00
CPCB66B5/0031
Inventor 季荣斌马祎炜
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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