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电梯维保单位必读:125%载荷试验中暴露出的严重问题!

时间:2018-07-26 10:57来源:新电梯澳门赛马会博彩 作者:纪监部门
  新电梯澳门赛马会博彩网讯(微信号:新电梯、新电梯网)

转发某城市技监部门公告全文
    各区市场监督澳门赛马会线上局、各电梯检验机构和各电梯维保单位:
    近期,全国各地在执行电梯检规2号修改单要求的125%载荷试验中暴露出了如下严重问题:

    1、试验时,发生曳引钢丝绳绳头(用锥形套、巴氏合金浇注的绳头组合)全部被拉脱,轿厢、对重坠入底坑;
    2、试验时,电梯轿厢金属结构发生变形。

    经初步了解,绳头被拉脱的原因主要是安装绳头组合时未按施工工艺对绳头进行二次绑扎“扎花”、清洁去污等措施进行浇注,造成绳头组合未达到原型式试验要求(绳头组合至少应该能够承受钢丝绳最小破断负荷的80%)。轿厢金属结构发生变形的原因主要是轿架强度不够。

    上述情况说明载荷试验及其重要、及其必要,必须严格执行检验规则,防止“走过场”现象,确保电梯能够经受试验的检验。

    同时,为防止试验过程中发生人员伤亡事故以及做好试验准备工作,现将有关要求通知如下:

    1、试验时轿厢内严禁有人。

    2、载荷试验前,电梯维保单位应对电梯进行全面检查,重点应检查下列部位:
    (1)了解钢丝绳绳头历史更换情况,钢丝绳绳头处理工艺情况(扎花、去油、尾部预留绳端长度);
    (2)电梯钢丝绳的腐蚀、磨损、断丝等损伤情况;
    (3)电梯轿厢轿架、轨道支架等金属结构的连接、腐蚀情况;
    (4)电梯制动器部件完好程度;
    (5)电梯机械传动部件的连接、损伤情况;

    3、电梯维保单位应按照相关规范、标准制定试验作业指导书,规定试验步骤、方法。如,先进行空载上行制动试验,通过后再进行载荷试验;载荷试验试验应逐步进行加载等规定;

    4、若发现电梯明显存在不符合载荷试验的缺陷,各单位要坚决停止载荷试验,并督促相关单位对电梯进行维修保养,确保在载荷试验前电梯处于良好的性能状态。

    5、检验机构应认真进行现场确认工作,及时向监察机构报告有关情况;监察机构对发生上述问题的电梯要及时了解、跟进,根据情况协调处理相关问题,并将有关情况上报市质监局特种设备处。

    请各位电梯人积极将此消息发给各电梯维保单位

  Technical supervision department announced serious problems in overload test with 125% rated load

  Recently the following serious problems have been exposed in the 125% load tests required by the 2nd Revision of elevator inspection rules. One is that the traction wire rope end (the combination of the rope head with the conical sleeve and the pasteurist alloy) is all pulled out, which makes the car and the counter poise both fall into the bottom pit in the test. And the other problem is that the elevator car suffers deformation on its metal construction in the test.

  In order to prevent casualties in the process of testing and to prepare for the test, the requirements are as follows:

  First, there should be no one in the car during the test.

  Second, before the load test, the elevator should go under a complete inspection by the maintenance company.

  Third, elevator maintenance company should stipulate the steps and methods of the test in accordance with the relevant standards and standards.

  Fourth, if any obvious defects that do not conform to the load test, every company must resolutely stop the load test.

  Fifth, the inspection organization should conscientiously carry out the field confirmation work and report the relevant information to the supervisors in time.

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