CN202708386U

CN202708386U - Arc surface seal pipe joint for rail wagon

Info

Publication number: CN202708386U
Application number: CN 201220303784
Authority: CN
Inventors: 秦啸; 潘树平; 王爱民; 郑欣欣; 肖八励; 王琰; 周炯; 陶斌
Original assignee: CSR Meishan Rolling Stock Co Ltd
Current assignee: CRRC Meishan Co Ltd
Priority date: 2012-06-27
Filing date: 2012-06-27
Publication date: 2013-01-30
Anticipated expiration: 2022-06-27

Abstract

The utility model relates to rail wagon braking devices, in particular to an arc surface seal pipe joint for a rail wagon. The arc surface seal pipe joint for the rail wagon comprises a thread joint body, an arc surface joint body and a nut. The arc surface seal pipe joint for the rail wagon is characterized in that the thread joint body is provided with a first outer arc surface, the arc surface joint body is provided with an inner arc surface and a second outer arc surface, an unthreaded end of the nut is abutted to the second outer arc surface of the arc surface joint body, and a threaded end of the nut is meshed with a thread of the thread joint body. The arc surface seal pipe joint for the rail wagon has the advantages that the thread joint body and the arc surface joint body can relatively rotate for 0 to 2.2 degrees in a cavity formed by the nut and the thread joint body by the aid of the arc surfaces of the thread joint body and the arc surface joint body, a large included angle which is not more than 2.2 degrees between two adjacent pipes can be allowed to exist, so that a part of external force which enables a pipe system to deform can be offset, the requirement for coaxiality of pipe system assembly is reduced, and under loaded car working condition, the included angle between two adjacent pipe systems can be voluntarily and finely adjusted so as to decrease twist force.

Description

A kind of railway freight-car arc surface sealed pipe joint

Technical field:

The utility model relates to lorry brake device, relates in particular to the piping joint of lorry brake device.

Background technique:

At present, the railway freight-car piping adopts flanged joint to be connected with ready-packaged joint more, its pipe fitting mostly is steel, therefore it is higher that coaxality and pipe thereof hang the group welding position required precision after piping being assembled, otherwise other strength can appear in piping, under the bad working environments such as loaded vehicle, be prone to the leakage problem that piping deformation, flange distortion cause.

Summary of the invention:

Problem to be solved in the utility model be exactly provide for above deficiency a kind of solve piping occur other strength problem sealed pipe joint.

Its technological scheme is as follows:

It comprises threaded connector body, arc surface fittings body and nut, and its key technology is that an end outer wall of threaded connector body has the first exterior arc surface, has draw-in groove on the first exterior arc surface, is embedded with O type rubber seal in the draw-in groove, and the first exterior arc surface is right after screw thread; The arc surface fittings body is two cambered surface fittings bodies, end inwall at the arc surface fittings body has inner arc surface, the other end outer wall at the arc surface fittings body has the second exterior arc surface, and the first exterior arc surface of the inner arc surface of arc surface fittings body and threaded connector body is fitted; Inwall one end of nut is without threaded end, and the other end is threaded end, nut withstand the second exterior arc surface of arc surface fittings body without threaded end, the threaded end of nut and the threaded engagement of threaded connector body compress O type rubber seal.

Compared with prior art, the utlity model has following beneficial effect:

1, because the existence of threaded connector body and arc surface fittings body arc surface, so that two fittings bodies can relatively rotate the 0-2.2 degree in the cavity of nut and threaded connector body formation, can allow adjacent two pipes to exist and be not more than 2.2 degree mitres, the external force that piping is deformed to offset part, requirement to piping assembling coaxality is lower, under the loaded vehicle operating mode, adjacent two pipings can be finely tuned angle voluntarily to reduce other strength.

2, a tightening nut is only arranged, install, dismounting is simple, convenient, labor intensity reduces.

3, compare with flanged joint, the seal failure that the component distortion causes can not occur.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model assembling schematic representation.

Embodiment:

As shown in Figure 1 and Figure 2, the utility model comprises threaded connector body 1, arc surface fittings body 4 and nut 2, an end outer wall that it is characterized in that threaded connector body 1 has the first exterior arc surface 5, have draw-in groove on the first exterior arc surface 5, be embedded with O type rubber seal 3, the first exterior arc surfaces 5 in the draw-in groove and be right after screw thread 6; Arc surface fittings body 4 is two cambered surface fittings bodies, end inwall at arc surface fittings body 4 has inner arc surface 8, the other end outer wall at arc surface fittings body 4 has the second exterior arc surface 7, and the inner arc surface 8 of arc surface fittings body 4 is fitted with the first exterior arc surface 5 of threaded connector body 1; Inwall one end of nut 2 is without threaded end 9, the other end is threaded end 10, nut withstand the second exterior arc surface 7 of arc surface fittings body without threaded end 9, the threaded end 10 of nut and screw thread 6 interlocks of threaded connector body 1, compress O type rubber seal 3, realize sealing function.

Claims

1. railway freight-car arc surface sealed pipe joint, comprise threaded connector body (1), arc surface fittings body (4) and nut (2), an end outer wall that it is characterized in that threaded connector body (1) has the first exterior arc surface (5), the first exterior arc surface has draw-in groove on (5), be embedded with O type rubber seal (3) in the draw-in groove, the first exterior arc surface (5) is right after screw thread (6); Arc surface fittings body (4) is two cambered surface fittings bodies, end inwall at arc surface fittings body (4) has inner arc surface (8), the other end outer wall at arc surface fittings body (4) has the second exterior arc surface (7), and the inner arc surface (8) of arc surface fittings body (4) is fitted with first exterior arc surface (5) of threaded connector body (1); Inwall one end of nut (2) is without threaded end (9), the other end is threaded end (10), nut withstand second exterior arc surface (7) of arc surface fittings body without threaded end (9), screw thread (6) interlock of the threaded end of nut (10) and threaded connector body (1) compresses O type rubber seal (3).