CN210224325U - Welding machine ground wire connecting device - Google Patents

Abstract

The utility model discloses a welding machine ground wire connecting device. The device comprises a U-shaped groove, a jacking screw and a connecting tail plate; the U-shaped groove is of an integrated structure formed by fixing two side plates and a bottom plate, a threaded hole is processed in one side plate, the jacking screw is in threaded connection with the threaded hole, the rotation is convenient, and a handle for rotation is welded at the head of the jacking screw. The connecting tail plate and the bottom plate are welded outside the U-shaped groove. By adopting the connecting device, the ground wire of the welding machine is tightly connected with the welded part, when the heavy current is continuously welded, the heating quantity is small, the current overcurrent is reliable, the welding quality is poor, and the welding efficiency is improved.

Description

Welding machine ground wire connecting device

Technical Field

The utility model discloses be applied to welding field, relate to a welding machine ground wire and by the device of simply connecting between the welding piece.

Background

Welding is applied to various social fields, and particularly, the welding is more commonly applied to the fields of equipment manufacturing and engineering installation. In the welding process of manual welding and automatic welding, the connection between the ground wire of the welding machine and the welded part needs to be reliable. In most cases, in order to save labor and time, the ground wire of the welding machine is lapped with the welded part and is pressed by a heavy object. The connection mode often causes the conditions of welding current reduction or arc interruption, and the like, and particularly in the process of heavy-current continuous welding (such as automatic submerged arc welding) the connection end of the ground wire of the welding machine and the welded part often causes the problems of overheating of the connection part and the like, so that the welding is unstable or interrupted, and the welding quality and the production efficiency are influenced.

Disclosure of Invention

The utility model provides a technical problem be: the welding machine ground wire connecting device is used for well connecting a welding machine ground wire and a welded part and solves the problem that the connection of a large-current continuous welding ground wire and the welded part is unstable and the welding quality is influenced.

The utility model adopts the technical proposal that: the welding machine ground wire connecting device comprises a U-shaped groove, a jacking screw and a connecting tail plate; the U-shaped groove is of an integrated structure formed by fixing two side plates and a bottom plate, a threaded hole is processed in one side plate, the jacking screw is in threaded connection with the threaded hole, the rotation is convenient, and a handle for rotation is welded at the head of the jacking screw. The connecting tail plate and the bottom plate are welded outside the U-shaped groove.

For the convenience of manufacture, the threaded holes are replaced by fixing nuts, through holes are processed in the side plates, and the fixing nuts are welded outside the U-shaped grooves in the through holes of the side plates.

The utility model has the advantages that: adopt the utility model discloses connecting device, welding machine ground wire with by welding piece zonulae occludens, when the heavy current lasts the welding, calorific capacity is little, the electric current overflows reliably, welding quality problem, welding efficiency improves.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a schematic structural view of example 2;

FIG. 3 is a schematic structural view of example 3;

wherein: 1-U-shaped groove, 2-tightening screw, 3-fixing nut, 4-connecting tail plate, 5-crimping terminal, 6-fastening bolt, 7-handle, 8-welded piece and 9-copper ground wire.

Detailed Description

Example 1.

As shown in the attached figure 1, the welding machine ground wire connecting device comprises a U-shaped groove 1, a jacking screw 2, a fixing nut 3 and a connecting tail plate 4. U type groove 1 is fixed as an organic whole structure by two curb plates and a bottom plate, and processing has the through-hole on the curb plate, and fixation nut 3 welds in the curb plate outside of this processing through-hole, with 2 threaded connection on the tight screw in top, has the handle 7 for the rotation in the head welding on the tight screw in top 2, connect the tailboard 4 and the bottom plate welding outside U type groove.

When the welding machine is used, the bottom line of the welding machine is fixedly connected with the compression joint terminal 5 in a compaction mode, the compression joint terminal 5 is fixedly connected with the connecting tail plate 4 through the fastening bolt 6, one part of a welded piece 8 is inserted into the U-shaped groove 1, as shown in the attached drawing 1, the rotating handle 7 is tightly pressed and tightly propped against the screw 2, and the welded piece 8 can be tightly and reliably connected with the connecting device.

Because the connection of the welded piece 8 and the connecting device and the connection of the crimping terminal 5 and the connecting tail plate 4 adopt close surface contact, the contact resistance is small, when large current is continuously welded, the heating value is small, the current is stable in overcurrent, the welding quality problem of unstable welding or welding interruption can not be caused, and the welding efficiency is also improved.

Example 2.

As shown in the attached figure 2, compared with the embodiment 1, the through hole on the side plate of the U-shaped groove 1 is changed into a threaded hole, the tightening screw 2 is directly in threaded connection with the threaded hole, and the rest structure is consistent with the embodiment 1.

Compared with the embodiment 1, tapping is needed when the connecting device is manufactured, the connecting device of the embodiment 1 only needs welding when the connecting device is manufactured, and the manufacturing of the connecting device of the embodiment 1 is quicker and more time-saving for welders needing the device.

Example 3.

As shown in fig. 3, compared with embodiment 2, the connection tail plate 4 and the crimp terminal 5 are omitted, and the copper ground wire 9 of the cable of the welding machine is directly compacted between the side plate of the U-shaped groove 1 and the welded piece 8.

Compared with embodiment 2, although the structure is simpler, the hidden trouble of unstable fixation remains. Along with the welding, the elastic compaction stress of the copper ground wire 9 gradually disappears, which can cause unstable connection and is not suitable for long-time large-current automatic welding operation.

Claims (3)

1. The utility model provides a welding machine ground wire connecting device which characterized in that: comprises a U-shaped groove (1), a jacking screw (2) and a connecting tail plate (4); the U-shaped groove (1) is of an integrated structure formed by fixing two side plates and a bottom plate, a threaded hole is processed in one side plate, the jacking screw (2) is in threaded connection with the threaded hole, and the connecting tail plate (4) is welded with the bottom plate outside the U-shaped groove (1).

2. The ground wire connecting device of the welding machine as claimed in claim 1, wherein: a rotating handle (7) is welded at the head of the tightening screw (2).

3. The ground wire connecting device of the welding machine as claimed in claim 1, wherein: the threaded hole is an inner hole of the fixing nut (3); and the fixing nut (3) and the side plate are welded outside the U-shaped groove (1).

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