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Electric hoist with overspeed protection

An electric hoist, overspeed protection technology, applied in the direction of the spring mechanism, hoisting device, etc., can solve the problems of loss, electric hoist stall, etc., achieve the effect of simple structure, accurate lifting speed, and improved safety performance

Inactive Publication Date: 2019-01-25
江苏宇泰电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Cranes are widely used in metallurgy, machinery, chemical industry, petroleum, energy and other fields, and the electric hoist is an important part of the crane. Cause the electric hoist to stall, resulting in very significant losses

Method used

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  • Electric hoist with overspeed protection
  • Electric hoist with overspeed protection
  • Electric hoist with overspeed protection

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Embodiment Construction

[0013] The electric hoist with overspeed protection device of the present invention will be described in detail below in combination with the embodiments and the accompanying drawings.

[0014] Such as figure 1 , figure 2 , image 3 As shown, the electric hoist with an overspeed protection device of the present invention includes a bracket assembly 1 of the electric hoist connected to the output shaft of the electric hoist and a bearing seat 2 supported on one end of the bracket assembly 1, and is also provided with a first electric hoist Two control boxes 8, the second control box 8 of the electric hoist is provided with a PLC control unit, the bearing seat 2 is provided with a support frame 3, and the support frame 3 is fixedly provided with a rotary encoder 4, The rotary encoder 4 is connected to the digital input module on the PLC control unit in the second control box 8 of the electric hoist through an encoder cable, the encoder cable is a double-hinge shielded cable, ...

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PUM

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Abstract

The invention discloses an electric hoist with overspeed protection, comprising a support assembly, a bearing block and a second control box, wherein the bearing block is supported at one end of the support assembly. A PLC control unit is arranged in the second control box of the electric hoist, a rotary encoder is fixedly arranged on a bracket which is disposed on the bearing block, and is connected with a digital input module on the PLC control unit in the second control box of the electric hoist through an encoder cable, and a digital output module of the PLC control unit is connected witha control circuit in a master control box of the electric hoist through a conductor wire. The electric hoist is simple in structure; the rotary encoder is mounted on a reel bracket, rotary pulse valueof the rotary encoder is transmitted to a PLC, and thus, speed state of a reel of the electric hoist can be monitored, lifting speed of the electric hoist can be tracked accurately, and safety performance of the electric hoist can be improved.

Description

technical field [0001] The invention relates to an electric hoist. In particular, it relates to an electric hoist with an overspeed protection device capable of monitoring the lifting speed of the electric hoist in real time. Background technique [0002] Cranes are widely used in metallurgy, machinery, chemical industry, petroleum, energy and other fields. Electric hoists are an important part of cranes. Cause the electric hoist to stall, resulting in very significant losses. Therefore, it is necessary to install an overspeed protection device on the electric hoist to avoid accidents. As a result, the safety performance of the electric hoist is greatly improved. Once the hoist lifting mechanism is overspeed, the two brakes of the hoist will be put into use immediately to prevent accidents. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an electric hoist with an overspeed protection device capable of monitori...

Claims

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Application Information

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IPC IPC(8): B66D1/54
CPCB66D1/54B66D2700/0141B66D2700/0183
Inventor 不公告发明人
Owner 江苏宇泰电器有限公司