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System and method for detecting overspeed protection function of hoisting machinery

A technology of overspeed protection and lifting machinery, applied in the direction of the clockwork mechanism, hoisting device, etc., can solve the problems of low detection efficiency, inability to lift machinery detection, etc., to improve safety, improve comprehensiveness, and improve detection efficiency. Effect

Pending Publication Date: 2021-10-15
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a system and method for detecting the overspeed protection function of hoisting machinery to solve the problem that the existing systems and methods for detecting the overspeed protection function of hoisting machinery have low detection efficiency and cannot Technical issues detected as a whole

Method used

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  • System and method for detecting overspeed protection function of hoisting machinery
  • System and method for detecting overspeed protection function of hoisting machinery
  • System and method for detecting overspeed protection function of hoisting machinery

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Embodiment Construction

[0029] In order to make the purpose, advantages and features of the present invention clearer, a system and method for detecting the overspeed protection function of the hoisting machinery proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0030] In the description of the present invention, the terms "first", "second" and other qualifiers are added for the convenience of description and reference, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features quantity. Thus, a feature defined with qualifiers such as "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0031] Such as f...

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Abstract

The invention provides a system and method for detecting the overspeed protection function of hoisting machinery. The system comprises a control module, a servo motor and a switching module, the control module is connected with the servo motor, the control module is used for controlling the operation state of the servo motor, and the rotating speed value of the control module is adjustable; one end of the switching module is connected with the servo motor, the other end of the switching module is connected with an input shaft of an overspeed protection module of hoisting machinery, and the switching module is used for driving the input shaft to rotate. According to the scheme, only a transmission module between the overspeed protection module and a winding drum needs to be disassembled, the whole overspeed protection module does not need to be disassembled from the hoisting machinery, and the detection efficiency is improved; circuit connection between the overspeed protection module and a hoisting machinery body is not detached, and the hoisting machinery formed by the overspeed protection module and the hoisting machinery body can be detected as a whole, so that the detection comprehensiveness is improved, and the safety of the hoisting machinery is further improved.

Description

technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a system and method for detecting the overspeed protection function of the hoisting machinery. Background technique [0002] When hoisting machinery such as cranes and tower cranes are performing thyristor stator voltage regulation, eddy current brakes, dynamic braking, thyristor power supply, and DC unit power supply, etc., the reel motor of the hoisting machinery may run overspeed and cause accidents. , so the lifting machinery needs to have overspeed protection function. The overspeed protection function of hoisting machinery is usually realized by an overspeed protection module, which is connected to the shaft of the reel motor through a transmission module, so that the overspeed protection module can monitor the speed of the reel motor. The shaft of the reel motor can drive the reel to rotate, and when the reel rotates, it can drive the steel wire rope on the ree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/54
CPCB66D1/54
Inventor 龚文蒋瑜黄正球杭杰高飞诸征金彦余杰李传磊汪敬东刘恩频
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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