电动葫芦用新四轮小车的试验分析

• 机 构: 洛阳起重机厂
• 出 处: 起重运输机械
• 发表日期: 1974年Z1期
• 关键词: 电动葫芦 四轮 应力比 行业会议 工字钢 应力分布 翼缘 九七 试验分析 试验结果

一九七四年三月我厂根据行业会议的要求,对电动葫芦用新老四轮小车作了对比试验。试验结果表明,新四轮小车可使工字钢翼缘边缘处应力比原四轮小车降低47.2%,并且应力分布比较合理。比较两种小车轮压作用点处的当量应力,则新小车可降低应力38.5%(见图3 A、B两点的应力)。新小车在工字钢产生的最大当量应力比老小车的降低24.8%。

In March 1974, according to the requirements of the industry conference, the factory made a comparative test on electric hoist with old and new four-wheeled trolley. The test results show that the new four-wheeled trolley can reduce the stress at the edge of the flange of I-beam by 47.2% compared with the original four-wheeled trolley, and the stress distribution is reasonable. Comparing the equivalent stress at the wheel press points of the two trolleys, the new trolley can reduce the stress by 38.5% (see the stress at points A and B in Figure 3). The maximum equivalent stress generated by the new trolley in the I-beam is reduced by 24.8% compared with that of the old trolley.