The invention discloses a trailer, and particularly relates to a trailer traction arm. The trailer traction arm comprises a cross beam, width telescopic arms and an L-shaped arm, and the cross beam and the width telescopic arms are rectangular pipes; the length-width outer size of the cross-section rectangle of the cross beam is smaller than the length-width inner size of the cross-section rectangle of each width telescopic arm; the width telescopic arms respectively sleeve two ends of the cross beam; a fastening bolt I is arranged on one side surface of each width telescopic arm; a fixing hole I is formed in one side face of the beam, rotating pieces are respectively arranged at one ends of the width telescopic arms at the two ends; each rotating piece is a rectangular pipe with a slope notch; and a rotary connecting lug I welded to one side face of the rectangular pipe matches with a rotary connecting lug II at one end of the corresponding width telescopic arm, the rotating pieces are connected with the width telescopic arms through main pin shafts, each main pin shaft penetrates through the corresponding rotary connecting lug I and the rotary connecting lug II, the rotating pieces can rotate around the main pin shafts, and the rotating pieces and the width telescopic arms are positioned and fixed through auxiliary pin shafts. According to the trailer traction arm, the efficiency is improved, and personal injuries are not likely to happen.
本发明公开了一种拖车,特别涉及一种拖车牵引臂。包括横梁、宽度伸缩臂、L臂,所述横梁、宽度伸缩臂为矩形管,横梁截面矩形的长宽外尺寸小于宽度伸缩臂截面矩形的长宽内尺寸,从横梁两端分别套接宽度伸缩臂,宽度伸缩臂的一个侧面设置紧固螺栓一,横梁的一个侧面设置固定孔一,两端的所述宽度伸缩臂的一端分别设置旋转件,旋转件为带有坡面切口的矩形管,矩形管一个侧面焊接旋转连接耳一与宽度伸缩臂一端的旋转连接耳二相配合,旋转件与宽度伸缩臂通过主销轴连接,主销轴穿过旋转连接耳一和旋转连接耳二,旋转件可绕主销轴转动,旋转件与宽度伸缩臂通过副销轴定位并固定。本发明设计的一种拖车牵引臂,提高了效率,不易发生人身伤害。
Trailer traction arm
一种拖车牵引臂
2020-06-12
Patent
Electronic Resource
Chinese
Trailer traction control device and trailer traction system
European Patent Office | 2023
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