我厂在活塞杆(最长4783毫米、重1809公斤)热处理时,为防止变形,需吊挂放置。采用如图所示的吊具很方便,并具有安全可靠、坚固耐用的特点,与在杆上焊接或铣孔插挂相比不但经济而且对质量无不良影响。使用该吊具时,要求在加工时,在活塞杆的一端留一凸台,吊装时先将外套装在有小凸台的头上,再将加工成三瓣的内套放入,内套直径要与杆端的直径相同。加热时外套会涨大,靠内外套的斜度来吊住活 I plant in the piston rod (up to 4783 mm, 1809 kg weight) heat treatment, in order to prevent deformation, to be hung to place. The use of the spreader as shown is easy and safe, robust and durable, which is economical and has no adverse effect on quality compared to welding or milling holes on the rod. When using the spreader, it is required to leave a boss at one end of the piston rod during machining. When hoisting, the outer jacket should be mounted on the head with a small boss, and the inner jacket processed into three valves is put into the inner jacket The diameter should be the same as the diameter of the rod end. Jacket will increase when heated, depending on the gradient of the jacket to live live