Monday, September 12, 2022
金属结构要有较大的刚度,载荷试验时,挠度应不大于()的支承距离,...
Saturday, September 17, 2022
层门的主动门扇(安装门锁)通过钢丝绳、皮带或链条等传动被动门扇时...
Saturday, September 17, 2022
按DB33/728-2009《电梯维修保养安全管理规范》规定,分...
Saturday, September 17, 2022
TSGT7001-2009《电梯监督检验和定期检验规则——曳引与...
Saturday, September 17, 2022
Sunday, September 11, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
作业人员应将在电梯安装和重大维修过程中自检的情况予以记录在DB1...
Monday, September 12, 2022
Friday, September 16, 2022
每列导轨工作面每5m铅垂线测量值间的相对最大偏差均不大于下列数值...
Sunday, September 11, 2022
某大厦两台电梯,其中一台20层10站,2、3、5、7、9、11、...
Monday, September 12, 2022
Sunday, September 11, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
限位开关的作用是防止轿厢超越端站撞顶或蹲底时的第一级保护装置。当...
Saturday, September 17, 2022
()装在机房内或井道顶部。当电梯的运行速度超过额定速度一定值时,...
Saturday, September 17, 2022
电梯各机构和电器设备在工作时不得有异常振动和撞击响声。电梯机房的平均噪声值应不大于()dB。A、60B、70C、80...
Friday, October 20, 2023