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Vertical transportation system electric safety interlock loop

A conveying system and electrical safety technology, applied in the field of electrical safety interlock circuit of vertical conveying system, which can solve the problems of personal injury, high impact force, accelerated falling of the car, etc.

Inactive Publication Date: 2020-10-13
SHANGHAI MAXRAC STORAGE EQUIP ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a special form of transportation, vertical transportation will cause more serious consequences once abnormal conditions occur.
[0003] Vertical conveying is a special form of conveying that requires extremely high safety and stability. If the corresponding protection and interlock are missing, when the abnormal conveying is caused by the failure of electrical components, it is easy to cause the car to accelerate and fall from a high place, and the impact force is relatively large. Large, easily causing serious equipment damage and personal injury

Method used

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  • Vertical transportation system electric safety interlock loop

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Embodiment Construction

[0016] The present invention is further illustrated below by specific examples.

[0017] Such as figure 1 As shown, an electrical safety interlock circuit of a vertical conveying system, including a PLC control module, a frequency converter control module and a motor brake control module, wherein,

[0018] The PLC control module is the CPU main control unit, which is used to collect the input signal of the encoder and the external switch signals, and then the internal program performs relevant logic operations to calculate the current running speed in the vertical direction and the current position. According to the calculation results and the corresponding position switch After comparing and judging the quantity signal input, it outputs the corresponding logical operation result, and then outputs the corresponding rising or falling signal of Confucius to control the operation in the vertical direction and provide overspeed / limit protection;

[0019] The frequency converter c...

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PUM

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Abstract

The invention relates to the field of warehousing equipment, in particular to a vertical transportation system electric safety interlock loop. The interlock loop is assembled by an encoder, a contacted, a relay, an outer photoelectric sensor, a frequency converter, a PLC and other electric elements. Through contact interlock and programming, multiple protection can be provided for transportation in the vertical direction; in case of abnormal speed of a vertical transportation system, timely power pump of a motor can be guaranteed and band-type brake and locking of the motor can be realized; orin case of damage of a relevant electric element, the situation that the motor cannot be initiated is guaranteed.

Description

technical field [0001] The invention relates to the field of storage equipment, in particular to an electrical safety interlock circuit of a vertical conveying system. Background technique [0002] As a special form of transportation, the transportation in the vertical direction will cause more serious consequences once an abnormal situation occurs. [0003] Vertical conveying is a special form of conveying that requires extremely high safety and stability. If the corresponding protection and interlock are missing, when the abnormal conveying is caused by the failure of electrical components, it is easy to cause the car to accelerate and fall from a high place, and the impact force is relatively large. If it is large, it is easy to cause serious equipment damage and personal injury. Contents of the invention [0004] The object of the present invention is to overcome the above defects and propose an electrical safety interlock circuit for a vertical conveying system. [...

Claims

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Application Information

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IPC IPC(8): B66B5/00B66B5/02
CPCB66B5/0031B66B5/02
Inventor 张鹏鹏
Owner SHANGHAI MAXRAC STORAGE EQUIP ENG