Welding tool for hard crossing of steel pipe of overhead line system of electrified railway

Abstract

The utility model provides an electrified railway contact net steel pipe hard crossing welding tool which comprises a portal frame, a guide rail and a movable clamping fixture, a portal frame flange is arranged on the portal frame, and the portal frame flange and a second flange are correspondingly arranged; the portal is located on the outer side of the guide rail, the guide rail is provided with a gradient in the hard crossing length direction, and the gradient of the guide rail corresponds to the hard crossing gradient of the steel pipe. The movable mould comprises a movable base and a mould arranged on the movable base, and the movable base is assembled on the guide rail and can reciprocate along the guide rail; the electrified railway contact net steel pipe hard crossing welding tool is used for welding transverse rods of edge beams and middle beams, can achieve simultaneous welding of multiple persons, improves heating uniformity, supports the gradient of steel pipe hard crossing, and reduces deformation of hard crossing.

Description

Technical Field

[0001] The utility model belongs to the field of hard cross-over tooling, in particular to a hard cross-over welding tooling for a steel pipe of an electrified railway contact network. Background Art

[0002] With the development of electrified railways, steel pipe rigid cross beams have been widely used as important supporting devices for electrified railway contact network power supply. According to different spans, they are spliced ​​by beam sections of different lengths. Steel pipe rigid cross beams are assembled and welded by seamless steel pipes, connecting flanges and stiffening plates. The main weld type is fillet welds. The cross beam is a triangular cross-section lattice steel pipe composite beam. The beam section is spliced ​​by the middle section and the side section. Flange connections are used between beam sections and between beams and pillars.

[0003] The current production process is to pre-assemble the steel pipe and flange on the mold when producing the side beam, then remove it from the mold and weld it completely. When producing the middle beam, the steel pipe is pre-assembled first, and then the two side beams and the middle beam are assembled as a whole. The flanges of the side beam and the middle beam are fastened with bolts, and then the flange of the middle beam is spot welded. The deformation of the side beam and the middle beam is not controlled during welding, and the welding is done by one person, the welding speed is uneven, and the heating is uneven, which leads to deformation of the hard cross after production. Utility Model Content

[0004] In view of this, the utility model aims to propose an electrified railway contact network steel pipe hard cross-over welding tool for use in cross bar welding of side beams and middle beams, which can realize simultaneous welding by multiple people, improve the uniformity of heating, support the slope of the steel pipe hard cross-over, and reduce deformation of the hard cross-over.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A welding tool for a steel pipe hard span of an electrified railway contact network, the steel pipe hard span comprising two side beams and a middle beam, the side beams being connected to the middle beam by a first flange and bolts, a second flange connected to a column being arranged on the outer side of the side beam, the welding tool comprising a gantry, a guide rail and a mobile jig, a gantry flange being arranged on the gantry, and the gantry flange being arranged correspondingly to the second flange; the gantry is located on the outer side of the guide rail, the guide rail being arranged with a slope along the length direction of the hard span, and the slope of the guide rail being arranged correspondingly to the slope of the steel pipe hard span; the mobile jig comprising a mobile base and a jig arranged on the mobile base, the mobile base being mounted on the guide rail and being able to reciprocate along the guide rail;

[0007] The mold includes a chassis and a positioning piece, which are arranged in a vertical direction. The positioning piece is arranged on the chassis, and the positioning piece is arranged corresponding to the first flange. The positioning piece is in a circular shape as a whole, and a steel pipe groove is opened in the center of the positioning piece, and a plurality of bolt holes are opened around the groove.

[0008] Furthermore, the positioning member includes an upper chord positioning member and two lower chord positioning members, and a triangular base is also provided on the chassis, the base protrudes from the chassis, and the upper chord positioning member and the two lower chord positioning members are respectively located at the top corners of the base.

[0009] Furthermore, the jig includes two jigs, which are arranged on the movable base in a mirror-symmetrical manner to each other.

[0010] Furthermore, the mobile molds include two.

[0011] Furthermore, the guide rail is arranged on the ground, and the slope of the guide rail relative to the ground is 1:60.

[0012] Furthermore, the movable base includes a pulley and a mounting seat, the mold is mounted on the mounting seat, the bottom of the mounting seat is equipped with a pulley, a pulley groove is arranged on the guide rail, and the pulley is mounted in the pulley groove for reciprocating movement.

[0013] Furthermore, the guide rails include two guide rails, and the two guide rails are arranged parallel to each other.

[0014] Furthermore, the chassis and the positioning member are made of flanges.

[0015] Compared with the prior art, the electric railway contact network steel pipe hard cross welding tooling described in the utility model has the following advantages:

[0016] The welding tooling of the utility model can realize simultaneous welding by multiple people through the door frame, guide rails and mobile jig, improve the uniformity of heating, support the slope of the steel pipe hard span, and reduce the deformation of the hard span. It solves the problem that the slope of the side beam and the middle beam is not supported during welding, and the welding speed is uneven, and the heating is uneven, which leads to the deformation of the hard span after production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the welding tooling according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the tire according to the embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the welding tooling used in the embodiment of the utility model;

[0021] Figure 4This is a schematic diagram of a steel pipe hard span structure according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the side beam and the middle beam described in the embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1-gantry; 2-bolt; 3-gantry flange; 4-side beam; 5-positioning piece; 6-chassis; 7-mounting seat; 8-mobile base; 9-guide rail; 10-mobile jig; 11-groove; 12-bolt hole; 13-lower chord positioning piece; 14-base; 15-upper chord positioning piece; 16-pulley; 17-pulley groove; 20-middle beam; 21-cross bar; 22-first flange; 23-second flange; 30-upper chord; 31-lower chord. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] like Figure 4 , Figure 5 As shown, the steel pipe rigid cross-span structure of the electrified railway contact network, the side beam 4 and the middle beam 20 include an upper chord 30 and a lower chord 31, and a plurality of cross bars 21 are welded between the upper chord 30 and the lower chord 31. Figures 1 to 4 As shown, a welding tool for a steel pipe hard span of an electrified railway contact network, the steel pipe hard span includes two side beams 4 and a middle beam 20, the side beams 4 and the middle beam 20 are connected by a first flange 22 and bolts, and a second flange 23 connected to a column 24 is arranged on the outer side of the side beam 4, characterized in that: the welding tool includes a gantry 1, a guide rail 9 and a mobile jig 10, the gantry 1 is provided with a gantry flange 3, and the gantry flange 3 is arranged corresponding to the second flange; the gantry 1 is located on the outer side of the guide rail 9, and the guide rail 9 is provided with a slope along the length direction of the hard span, and the slope of the guide rail is arranged corresponding to the slope of the steel pipe hard span; the mobile jig 10 includes a mobile base 8 and a jig arranged on the mobile base 8, and the mobile base 8 is mounted on the guide rail 9 and can reciprocate along the guide rail 9;

[0028] The mold includes a chassis 6 and a positioning member 5, which are arranged in a vertical direction. The positioning member 5 is arranged on the chassis 6, and the positioning member 5 is arranged corresponding to the first flange. The positioning member 5 is in a circular shape as a whole. A steel pipe groove 11 is opened in the center of the positioning member 5, and a plurality of bolt holes 12 are opened around the groove 11.

[0029] The invention discloses a welding tool for a steel pipe hard cross-span of an electrified railway contact network. When welding a side beam, an upper chord 30 and a lower chord 31 of the side beam 4 are mounted in a groove 11 of a positioning member 5, a first flange 22 of the side beam 4 is butted against a gantry flange 3 and fixed by bolts 2, and a second flange 23 of the side beam 4 is butted against a positioning member 5 of a jig and fixed by bolts, and the cross bar 21 of the side beam 4 is welded. The positioning member 5 is mounted on a chassis 6 and arranged in a vertical direction. The jig can move along a guide rail 9 with a movable base 8, corresponding to the slope of the steel pipe hard cross-span, and supports the slope of the steel pipe hard cross-span, thereby reducing deformation of the hard cross-span. The invention is suitable for welding cross bars of the hard cross-span, and can realize welding by multiple people at the same time, thereby improving the uniformity of heating.

[0030] like Figure 2 As shown, the positioning member 5 includes an upper chord positioning member 15 and two lower chord positioning members 13, and a triangular base 14 is also provided on the chassis 6. The base 14 protrudes from the chassis 6, and the upper chord positioning member 15 and the two lower chord positioning members 13 are respectively located at the top corners of the base 14. It is convenient for the end of the steel pipe hard across the steel pipe to be inserted into the groove 11, and the installation is more convenient.

[0031] like Figure 1 and Figure 3 As shown, the jigs include two, and the two jigs are arranged on the mobile base 8 in a mirror-symmetrical manner. The mobile jigs 10 include two. When welding the center beam, the two ends of the center beam 20 are respectively mounted on the mobile jigs 10, the upper chord 30 and the lower chord 31 of the center beam 20 are mounted in the groove 11 of the positioning member 5, and the first flanges 22 at the two ends of the center beam 20 are connected to the positioning member 5 of the jig and fixed by bolts to weld the crossbar of the center beam. Setting two mobile jigs 10 and a portal frame 1 can simultaneously support the welding of the side beams and the center beam.

[0032] Preferably, the guide rail 9 is arranged on the ground, and the slope of the guide rail 9 relative to the ground is 1:60. Suitable for welding a steel pipe hard span with a slope of 1:60.

[0033] like Figure 3 As shown, the mobile base 8 includes a pulley and a mounting seat 7, the mold is mounted on the mounting seat 7, the bottom of the mounting seat is equipped with a pulley 16, the guide rail 9 is provided with a pulley groove 17, and the pulley 16 is mounted in the pulley groove 17 for reciprocating movement. Further, the pulley 16 is also provided with a brake device for positioning the pulley 16.

[0034] Preferably, the guide rails 9 include two guide rails 9, which are arranged parallel to each other. The movable base 8 is mounted on the two guide rails 9, and the movement is more stable.

[0035] Preferably, the chassis 6 and the positioning member 5 are made of flanges, which can reduce production costs.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding tool for a steel pipe rigid cross-over of an electrified railway contact network, the steel pipe rigid cross-over comprising two side beams (4) and a middle beam (20), the side beams (4) and the middle beam (20) being connected via a first flange (22) and bolts, a second flange (23) connected to a column (24) being arranged on the outer side of the side beam (4), characterized in that: The welding fixture comprises a gantry (1), a guide rail (9) and a movable jig (10); a gantry flange (3) is arranged on the gantry (1), and the gantry flange (3) is arranged corresponding to the second flange; the gantry (1) is located outside the guide rail (9), and the guide rail (9) is provided with a slope along the length direction of the hard cross-span, and the slope of the guide rail is arranged corresponding to the slope of the hard cross-span of the steel pipe; the movable jig (10) comprises a movable base (8) and a jig arranged on the movable base (8), and the movable base (8) is mounted on the guide rail (9) and can reciprocate along the guide rail (9); The mold comprises a chassis (6) and a positioning member (5), wherein the chassis (6) and the positioning member (5) are arranged in a vertical direction, the positioning member (5) is arranged on the chassis (6), the positioning member (5) is arranged corresponding to the first flange, the positioning member (5) is in a circular shape as a whole, a steel pipe groove (11) is provided at the center of the positioning member (5), and a plurality of bolt holes (12) are provided around the groove (11).

2. The electric railway contact network steel pipe hard cross-welding tool according to claim 1 is characterized by: The positioning member (5) comprises an upper chord positioning member (15) and two lower chord positioning members (13); a triangular base (14) is further provided on the chassis (6); the base (14) protrudes from the chassis (6); and the upper chord positioning member (15) and the two lower chord positioning members (13) are respectively located at the top corners of the base (14).

3. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The molds include two molds, which are arranged on the movable base (8) in a mirror-symmetrical manner to each other.

4. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The mobile mold (10) comprises two.

5. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The guide rail (9) is arranged on the ground, and the slope of the guide rail (9) relative to the ground is 1:

60.

6. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The movable base (8) comprises a pulley and a mounting seat (7), the mold is mounted on the mounting seat (7), a pulley (16) is mounted on the bottom of the mounting seat, a pulley groove (17) is provided on the guide rail (9), and the pulley (16) is mounted in the pulley groove (17) to reciprocate.

7. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The guide rails (9) comprise two guide rails, and the two guide rails (9) are arranged parallel to each other.

8. The electric railway contact network steel pipe hard cross-welding tool according to claim 1, characterized in that: The chassis (6) and the positioning member (5) are made of flanges.

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