CN202905959U - Clamp fastening device for electric welding ground - Google Patents

Abstract

The utility model relates to a clamp fastening device for electric welding ground, which is applied in electric welding construction. Features: One end of the steel pipe is welded with a plug, and an external threaded joint is fixed on the plug, and the outer end of the external threaded joint is welded with a ground plate; there are two side-by-side screw holes on the outer wall of the steel pipe; two screw holes Each is fixed with a screw. There is a cuboid spacer in the steel pipe, and the ends of the two screws are pressed on the top of the spacer; the copper wire is inserted from the other end of the steel pipe, and the end of the copper wire is at the bottom of the spacer. The effect is: the copper wire can be pressed tightly, the phenomenon of false connection of the ground wire will not occur, and the construction quality of electric welding can be improved. Avoid frequent adjustment of ground wire by workers and improve construction efficiency.

Description

Clamp fastening device for electric welding ground

technical field

The utility model relates to the technical field of electric welding equipment, in particular to a clamp fastening device for electric welding.

Background technique

The fastening device of welding clamps in various arc welding methods plays an important role in the quality of welding construction. Electrode arc welding SMAW is the earliest and most widely used welding method among various arc welding methods. SMAW equipment is simple, portable, and flexible in operation. It is used for welding of short seams in maintenance and assembly, especially for welding of difficult-to-reach parts. More than 95% of oilfield gathering and transportation pipelines use SMAW, and welding tooling plays an important role in welding construction quality.

During the pipeline welding process, defects such as welding pores, slag inclusions, and undercuts are often encountered. Welding defects often lead to stress concentration, reduce bearing capacity, shorten service life, and even cause brittle fracture. Part of the reason is that the joints of the welding ground wire are not fastened well, and there is a virtual connection, which causes the ground wire of the welding machine to be damaged and broken to varying degrees, which affects the welding quality and production progress.

In the past, the connection method of the electric welding ground wire joint is to directly overlap or clamp the exposed copper wire part of the front end of the ground wire cable on the ground wire fork, the contact is not firm, and there is a virtual connection. Copper wire joints will quickly age and break. If it is broken, it has to be reconnected, which affects the construction progress and wastes time and materials.

Utility model content

The purpose of this utility model is: to provide a clamp fastening device for electric welding, to achieve welding quality up to standard, and to solve the current situation of poor contact between cables and ground wire forks.

The technical solution adopted by the utility model is: electric welding ground clamp fastening device, including ground plate, external thread joint, plug, steel pipe, screw, gasket and copper wire, characterized in that: one end of the steel pipe is welded with a plug , the plug is round, with an internal thread hole in the center of the plug, and an external threaded joint is fixed on the internal threaded hole of the plug. The external threaded joint is cylindrical and has external threads; the outer end of the external threaded joint is welded with Ground plate; there are two side-by-side screw holes on the wall of the steel pipe, the centerline of the two screw holes is perpendicular to the centerline of the steel pipe; a screw is respectively fixed in the two screw holes, and there is a rectangular parallelepiped in the steel pipe Gasket, the ends of the two screws are pressed on the upper part of the gasket; the copper wire is inserted from the other end of the steel pipe, and the end of the copper wire is in the lower part of the gasket. Tighten the screw, and the gasket presses the copper wire tightly, so that the ground wire cannot be falsely connected.

Beneficial effects of the utility model: The clamp fastening device of the electric welding ground of the utility model can compress the copper wire without causing false connection of the ground wire, and improves the construction quality of the electric welding. Avoid frequent adjustment of ground wire by workers and improve construction efficiency.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the structure of the electric welding clamp fastening device of the present invention.

FIG. 2 is a top view of FIG. 1 .

In the figure, 1-ground plate, 2-external thread connector, 3-plug, 4-steel pipe, 5-screw, 6-gasket, 7-copper wire.

Detailed ways

Embodiment 1: Taking an electric welding clamp fastening device as an example, the utility model is further described in detail.

See Figure 1. The electric welding clamp fastening device of the utility model comprises a ground plate 1, an external thread joint 2, a plug 3, a steel pipe 4, a screw 5, a gasket 6 and a copper wire 7.

The steel pipe 4 has a length of 200mm and an inner diameter of 50mm. One end of the steel pipe 4 is welded with a plug 3, the plug 3 is circular, and the center of the plug 3 has an M20 internal thread hole, and the internal thread hole of the plug 3 is fixed with a An M20 external thread joint 2, the external thread joint 2 is cylindrical and has external threads. A ground plate 1 is welded on the outer end surface of the externally threaded joint 2 . The ground plate 1 is a steel plate with a thickness of 14mm. There are two screw holes of M12 arranged side by side on the wall of the steel pipe 4 , and the centerlines of the two screw holes are perpendicular to the centerline of the steel pipe 4 . An M12 screw 5 is respectively fixed in the two screw holes, a cuboid spacer 6 is arranged in the steel pipe 4 , and the ends of the two screws 5 are pressed on the top of the spacer 6 . From the other end of the steel pipe 4, pass through the copper wire 7 (the ground wire of the electric welding machine), and the end of the copper wire 7 is at the bottom of the gasket 6. Tighten the screw 5, and the gasket 6 compresses the copper wire 7, so that the phenomenon of ground wire virtual connection cannot occur.

Claims (1)

1. An electric welding ground clamp fastening device, including a ground plate (1), an external threaded joint (2), a plug (3), a steel pipe (4), a screw (5), a gasket (6) and a copper The wire (7) is characterized in that: one end of the steel pipe (4) is welded with a plug (3), the plug (3) is circular, and the center of the plug (3) has an internal thread hole, and the plug (3) An externally threaded joint (2) is fixed on the internally threaded hole of the externally threaded joint (2), which is cylindrical and has external threads; a ground plate (1) is welded on the outer end face of the externally threaded joint (2); 4) There are two side-by-side screw holes on the wall, and the center line of the two screw holes is perpendicular to the center line of the steel pipe (4); a screw (5) is respectively fixed in the two screw holes, and the inside of the steel pipe (4) A cuboid spacer (6) is arranged, and the ends of two screws (5) are pressed on the top of the spacer (6); the other end of the steel pipe (4) passes through the copper wire (7), and the copper wire (7) ) end at the bottom of the gasket (6).

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