span-changing device

Manual Single-beam Crane is configured by crane span structure, cart driving device and manual monorail car and other major parts.

手动单梁起重机系由桥梁，大车传动机构，手动单轨行车等主要部分组成。

It proposes to adopt variable stagger arrangement and to change the horizontal tension link on push-off device into the compression link so as to reduce the deflection of contact wire in area adjacent to mid-point anchor in straight line and in large span length up to 65 m.

提出在直线区段的中心锚结附近和65m大跨距内，采取不等之字值布置法和反定位装置处的水平拉杆改成压管的措施减小接触线风偏。

The adoption of large-span bond-free prestressed concrete technology and tensioning device have ensured construction quality and saved construction cost of highrise building.

在高层建筑施工中采用大跨度无粘结预应力技术，并对其中的铺放技术、穴模加工、张拉设备等进行改造，使工程质量得到保证，成本也有降低。

The MLV Series device a temperature compensated output signal and is calibrated for zero and span.

该MLV系列 装置具有温度补偿的输出信号,且为零点和跨度提供标准化刻度.