The utility model relates to a railway freight transport device, in particular to a new joint body assembly structure for railway freight cars. It includes joint body and brake tube, brake tube and joint body fastening assembly. The key technology is that the inner wall of the joint is machined with internal thread, the outer wall of the brake pipe is machined with external thread, and the joint body and the brake pipe are pre-assembled by thread fastening and then welded through the weld. The utility model has the beneficial effects that the inner wall of the joint is machined with the inner thread, the outer wall of the brake pipe is machined with the outer thread, the joint body and the brake pipe are fastened and pre-assembled by thread, the assembly gap between the joint body and the brake pipe can be controlled, the assembly precision and reliability of the positioning between the joint body and the brake pipe are increased, and the welding interval is prevented. Defects such as eccentric welding and poor fusion caused by uneven gap can improve welding quality and reduce pipe leakage caused by poor weld quality.
【技术实现步骤摘要】
一种铁路货车用新型接头体装配结构
：本技术涉及铁路货物运输装置，尤其是铁路货运装置的制动装置部件。
技术介绍
：目前，铁路货车管系接头体与制动管仅采用焊接连接，由于各自制造公差、装配精度限制，组装后管材与接头体的间隙不易控制，容易偏斜造成垂直度超差；不均匀的间隙带来不同的焊接收缩，同样会造成垂直度超差，有时不均匀的组对间隙甚至会引起焊缝根部熔合不良，垂直度偏差过大、焊接质量差等都易引起管系泄露问题。所以接头体焊接前的组装精度控制就显得尤为重要，需要采用一种可靠的结构来保证组装焊接质量。
技术实现思路
：本技术要解决的问题就是针对以上不足而提供一种增加接头体与制动管定位的装配精度和可靠性的接头体装配结构。其技术方案如下：本技术包括接头体和制动管，制动管和接头体紧固装配。其关键技术在于接头体内壁加工内螺纹，制动管外壁加工外螺纹，接头体与制动管采用螺纹紧固预装配后再通过焊缝焊接。与现有技术相比，本技术具有如下有益效果：1、接头体内壁加工内螺纹，制动管外壁加工外螺纹，接头体与制动管采用螺纹紧固预装配，可控制接头体与制动管的装配间隙，增加了接头体与制动管定位的装配精度和可靠性，...
【技术保护点】
1.一种铁路货车用新型接头体装配结构，包括接头体(1)和制动管(2)，制动管(2)和接头体(1)紧固装配，其特征在于接头体(1)内壁加工内螺纹(4)，制动管(2)外壁加工外螺纹(5)，接头体(1)与制动管(2)采用螺纹紧固预装配后再通过焊缝(3)焊接。
【技术特征摘要】
1.一种铁路货车用新型接头体装配结构，包括接头体(1)和制动管(2)，制动管(2)和接头体(1)紧固装配，其特征在于接头体(1...
【专利技术属性】
技术研发人员：贾罗云，许晗，姚艳芳，张志昌，程洪建，王强，伍鸿斌，邓兴伟，钟智勇，李勇，刘海英，
申请(专利权)人：中车眉山车辆有限公司，
类型：新型
国别省市：四川,51
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