国外葫芦式起重机发展近况

以电动葫芦作为起升机构的葫芦式起重机，随着电动葫芦技术的发展，其品种、类型和规格不断扩展。本文介绍这类起重机的性能参数、整机与机构特点、电气、工艺与材料的发展近况。

H钢在葫芦式起重机上的应用

Ｈ钢是一种新型热轧型钢，广泛用于建筑、桥梁中。近年来，国内外又将Ｈ钢的应用范围扩展到起重机钢结构中，特别是用于葫芦式起重机。文中介绍Ｈ钢的结构特点、规格、几何特性及在葫芦式起重机上的应用和有关计算。

基于农村小学数学“葫芦式”网课的教学模式与策略的实践研究

本文通过论述基于农村小学数学"葫芦式"网课的教学模式与策略的实践过程,提供个性化学习的交互式环境等为学生真正创造出一个个可供学生个性化学习的交互式环境,使他们的数学思维方法、处理和应用信息技术的能力、合作交流能力等素质都有较大的提高.

电动单梁起重机常见问题分析

对电动单梁起重机各部件常见问题进行分析,并针对各问题的处理和防范进行了探讨。

浅谈起重机械的两大部件

概述起重机械制动器选用时应考虑的基本原则、问题和为防范葫芦式起重机械发生起重伤害事故采用的多种安全防护装置。

Research & design on the drive system of nuclear fuel manipulate crane

The control of nuclear fuel manipulator crane （MC） drive system is essential for its running and other systems are designed surrounding the drive system.This paper gives a brief introduction to the composition and function of MC,analyses its drive mode and control method and applies PLC to control its frequency transducer directly to help the motor work more stable.Based on the control requirements of bridge,trolley,Hoist,the control system of bridge applies a drive mode with 2-drag2 drive model on both sides and a multi-control method to realize simultaneous runningof two sides,1-drag-1 model on through-going axes and closed loop control method finish the precise location of trolley,and the using of 1-drag-1 model drive mode and closed loop control method solves the protect control difficulty of hoist which stops/starts repeatedly and changes speed.