tensioning

Puts forward the solutions for the welding equipment, greatly reduces the adverse impact to welding sealing performance brought by the mechanical equipment defects by improving hydraulic pressure, adjusting the concentricity of welding jig, improving the structure of center diaphragm tensioning device and oil filled machine.

提出了焊接设备改良方案，通过提升液压站压力、调整焊接夹具同心度、改进中心膜片张紧设备和充油机结构，大大降低了机械设备缺陷对焊接密封性能造成的不利影响。

The elastic deformation relationship among "Drive force-Deformation-Tension" is clarified through an analysis of the spring-tensioned, friction-driven winch. A new calculation method and a special structure of tensioning device are presented to ensure the reliability of friction drive.

本文通过对弹簧张紧摩擦驱动绞车的分析，明确了驱动力－变形－张紧之间的弹性变形关系，提出了新的计算方法和一种特殊结构的张紧装置，以保证摩擦驱动的可靠性。

In the basis of working principle of automatic hydraulic tensioning device, structure composing, control principle and function characteristics of the device were introduced in this paper. It also expounded the design key of the control system is to set pressure value and maxim drawing value.

文章根据液压自动张紧装置的液压原理，详细阐述了自动张紧装置的结构组成、控制原理及功能特点，并阐明了控制系统的设计关键在于压力值和最大拉力值的设定。