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Construction elevator capable of operating at modulated frequency and power frequency

A technology for construction elevators and reducers, which is applied to elevators, transportation and packaging, and elevators in buildings. The effect of electricity

Active Publication Date: 2015-03-18
GUANGDONG YUWA HEAVY IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] There are two main types of construction lifting products, one is: only the power frequency constant speed operation mode controls the lifting of the cage of the construction hoist; the other is: only the frequency modulation variable speed operation mode controls the lifting of the construction hoist's cage; because Its control method is single, once the control mechanism fails, the hoisting cage cannot run

Method used

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  • Construction elevator capable of operating at modulated frequency and power frequency
  • Construction elevator capable of operating at modulated frequency and power frequency

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 with figure 2 As shown, the construction hoist that can be operated at frequency and power frequency includes guide rail frame 1, cage 8, transmission mechanism 2 and main line, transmission mechanism 2 includes a motor and a reducer, the input end of the reducer is connected to the motor shaft, The output end of the last stage of the machine is provided with a transmission pinion, which meshes with the rack of the guide rail frame 1. It is characterized in that it also includes a frequency conversion control circuit, a power frequency control circuit and a manual switch SA. The manual switch SA is set There is one input pole and two output poles, the input pole is electrically connected to the main line, and the two output poles are respectively electrically connected to the motor through a frequency conversion control circuit...

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Abstract

The invention relates to a construction elevator capable of operating at modulated frequency and power frequency, which comprises a guide rail frame, a cage, a transmission mechanism and a main line. The transmission mechanism comprises a motor and a speed reducer. The input end of the speed reducer is connected with the shaft of the motor. A small transmission gear is arranged at the last-stage output end of the speed reducer. The small transmission gear is engaged with the gear rack of the guide rail frame. The construction elevator is characterized in that the construction elevator additionally comprises a viable-frequency control circuit, a power-frequency control circuit and a manual switch SA, the manual switch SA is provided with an input electrode and two output electrodes, the input electrode is electrically connected with the main line, and the two output electrodes are respectively and electrically connected with the motor through the variable-frequency control circuit and the power-frequency control circuit. In the original control system for direct start and operation at power frequency, by adding a modulated frequency variable-speed control system controlled by a frequency converter and by controlling the switching of an intermediate relay and a contactor through the manual switch, the switching between the two control systems is realized.

Description

technical field [0001] The invention relates to the technical field of construction elevators, in particular to construction elevators capable of frequency modulation and industrial frequency operation. Background technique [0002] There are mainly two types of construction lifting products, one is: only the power frequency constant speed operation mode controls the lifting of the construction hoist's cage; the other is: only the frequency modulation and variable speed operation mode controls the construction hoist's cage lifting; because Its control method is single, and once the control mechanism breaks down, the hoisting cage cannot operate. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a simple and reasonable structure, safe and reliable use, with two operating modes of constant speed operation and variable speed operation, and the two modes can be switched at any t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B9/00B66B1/12B66B11/04B66B11/02B66B5/00
Inventor 张子伦劳志伯刘立新黎耀东周宏霄黄锦权岑少挺
Owner GUANGDONG YUWA HEAVY IND TECH