单极安全滑触线其导电主体为断面呈"H"型的铝型材，故又称"H"型节能滑线装置，节能是相对于以角钢为主体的滑触线，电能在输电过程中的损耗大大被减少。铝材的电阻率远低于钢材，且比重小，将铝材轧制成"H"型，是在保证一定的导电截面积的基础上以能提高整体刚性和强度。但是铝材表面硬度低且不耐磨。
Unipolar security sliding touch line the electrical conductivity of the main section is "H" type of aluminum, so it is also called "H" type energy-saving slide wire device, energy saving is relative to the angle the main body of the sliding contact line power loss in the transmission process has been greatly reduced. The electrical resistivity of aluminum is much lower than that of steel, and the specific gravity is small, and it is made of "H" type, which is based on the guarantee of a certain conductive section area to improve the overall rigidity and strength. But the surface of the aluminum is low and no wear resistant.
为使铝基材能满足作为导电滑触线的实用性，在"H"形中梁制成上拱型，又在此处按规定的工艺程序嵌装耐磨性强的不锈钢型材。这"H"形的不锈钢型材是作为导电器中导电块的磨擦传电面，其嵌装工艺保证了不锈钢与铝型材的紧密结合，从导入铝型材的电流通过不锈钢体使与之保持接触的导电器中的导块在磨擦接触中将电流传输出去，保证了起重机械在运行过程中电流的连续。
In order to make the aluminum base material can be used as a practical electric contact line, in the "H" shape of the beam is made up of arch type, and in accordance with the provisions of the process, the wear resistance of stainless steel. The 'H' - shaped stainless steel section bar is as conducting electrical conductive block friction contact surface, the block loading process to ensure that the stainless steel and aluminum profile closely, from the current import aluminum stainless steel body through the make and keep contact conducting device of guide block in friction contact in the current transfer out, ensure the play heavy machinery in operation in the process of continuous current.
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