CN211655107U - Connecting device for ground wire of electric welding machine - Google Patents

Abstract

The utility model provides a connecting device of electric welding ground wire belongs to electrically conductive connection technical field. The connecting device comprises a U-shaped pipe clamp and a pipeline clamping structure, the U-shaped pipe clamp comprises two opposite strip-shaped portions and a bending portion connected to the first ends of the two strip-shaped portions, the second ends of the two strip-shaped portions are respectively provided with the pipeline clamping structure, and the bending portion is provided with a ground wire connecting structure. The U-shaped pipe clamp with the ground wire connecting structure and the pipeline clamping structure arranged on the U-shaped pipe clamp form a connecting device of the electric welding machine ground wire, so that one end of the electric welding machine ground wire is fixed on a long-distance oil conveying pipeline through the connecting device formed by the U-shaped pipe clamp and the pipeline clamping structure and is electrically connected. The whole process can not form a weld scar on the surface of the long-distance oil conveying pipeline, can not damage the outer wall of the long-distance oil conveying pipeline, and can ensure that the material performance and the integral attractiveness of the long-distance oil conveying pipeline are better.

Description

Connecting device for ground wire of electric welding machine

Technical Field

The utility model relates to a conductive connection technical field, in particular to electric welding machine ground wire's connecting device.

Background

The electric welder is a device which utilizes high-temperature electric arcs generated by the instant short circuit of positive and negative electrodes to melt welding flux and welded materials on an electric arc strip and combine the welding flux and the welded materials. When an electric welding machine is used for electric welding operation, a ground wire is arranged firstly, and two ends of the ground wire are respectively connected with the negative electrode of the electric welding machine and a welded material; and then, carrying out welding operation, and enabling the positive electrode of the electric welding machine to be close to the welded material so that the positive electrode and the negative electrode of the electric welding machine form a loop through the welded material. Because the welded material is generally a metal conductor, the positive electrode and the negative electrode of the electric welding machine are short-circuited at the moment of forming a loop, high-temperature electric arcs are generated to melt the welding flux on the arc strips and the welded material, and the welding flux and the welded material are combined together after the melting.

When the ground wire is arranged, one end of the ground wire is connected with the negative electrode of the electric welding machine, and the other end of the ground wire is required to be electrically connected with a welded material. If the welded material is a steel structure, the end of the ground wire which is not connected with the electric welding machine can be clamped on the welded material by using a wire clamp, so that the ground wire is fixed on the welded material and forms stable electric connection with the welded material. If the welded material is a long-distance oil pipeline, the ground wire clamp cannot be fixed on the welded material, one end of the ground wire, which is not connected with the electric welding machine, is clamped in the flat iron, the flat iron is clamped by the ground wire clamp, and the flat iron is spot-welded on the outer wall of the long-distance oil pipeline, so that the ground wire is fixed on the welded material through the flat iron and is electrically connected with the welded material. And after the operation to be welded is finished, the flat iron is disconnected from the long-distance oil pipeline.

In implementing the present disclosure, the inventors found that the related art has at least the following problems:

the flat iron is spot-welded on the outer wall of the long-distance oil pipeline, so that a weld scar is formed on the surface of the long-distance oil pipeline, the outer wall of the long-distance oil pipeline is damaged, and the material performance and the overall attractiveness of the long-distance oil pipeline are affected.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a connecting device for an electric welding machine ground wire, which can fix the electric welding machine ground wire on the outer wall of a long-distance oil pipeline and cannot form a crater to influence the material performance and the overall attractiveness of the long-distance oil pipeline. The technical scheme is as follows:

the embodiment of the disclosure provides a connecting device of electric welding machine ground wire, connecting device includes U type pipe strap and pipe clamp structure, U type pipe strap is including two relative bar portions that set up and connect the flexion on the first end of two bar portions, the second end of two bar portions is equipped with respectively pipe clamp structure, the flexion has ground wire connection structure.

Optionally, the pipe clamping structure is a screw, the bar-shaped portion has a screw hole matched with the screw, and the screw is inserted into the screw hole and located on two sides of the screw hole.

Optionally, the conduit gripping structure is a spring, the spring being located between the two bar portions.

Optionally, the pipe clamping structure is an arc-shaped piece, and the arc-shaped pieces on the two strip-shaped portions are bent towards each other.

Optionally, the connection device further comprises a fitting and a socket;

the joint is provided with a fixed end fixedly connected with one end of the ground wire of the electric welding machine and a dismounting end opposite to the fixed end;

the socket is fixed on the bending portion, a groove is formed in the socket, and the dismounting end is clamped in the groove.

Optionally, be equipped with the lug on the outer wall of dismouting end, be equipped with on the inner wall of recess with first banding pit and the banding pit of second that the lug matches, the first end of first banding pit is located the opening part, first banding pit is followed the depth direction of recess extends, the one end of second banding pit with the second end intercommunication of first banding pit, the extending direction of second banding pit with the extending direction of first banding pit is perpendicular.

Optionally, the disassembling end is provided with an external thread, and the inner wall of the groove is provided with an internal thread matched with the external thread.

Optionally, the outer wall of the dismounting end is provided with a clamping jaw, the socket is provided with a conical convex block on the outer wall of one end of the groove, and the outer diameter of the conical convex block is gradually increased along the opening direction away from the groove.

Optionally, the connecting device further comprises an insulating sleeve, and the insulating sleeve is sleeved outside the joint.

Optionally, the connecting device further comprises a flat iron, the flat iron has a clamping end for clamping one end of the ground wire of the electric welding machine and a connecting end opposite to the clamping end, and the connecting end is connected with the bending portion.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

the U-shaped pipe clamp with the ground wire connecting structure and the pipeline clamping structure arranged on the U-shaped pipe clamp form a connecting device of an electric welding machine ground wire, the U-shaped pipe clamp comprises two opposite bar-shaped parts and a bending part connected to the first ends of the two bar-shaped parts, the second ends of the two bar-shaped parts are provided with the pipeline clamping structure, and the U-shaped pipe clamp can be fixed on a long-distance oil conveying pipeline through the pipeline clamping structure. And the bending part is provided with a ground wire connecting structure and can be connected with one end of the ground wire of the electric welding machine, so that one end of the ground wire of the electric welding machine is fixed on the long-distance oil pipeline through a connecting device consisting of the U-shaped pipe clamp and the pipeline clamping structure and is electrically connected. The whole process can not form a weld scar on the surface of the long-distance oil conveying pipeline, can not damage the outer wall of the long-distance oil conveying pipeline, and can ensure that the material performance and the integral attractiveness of the long-distance oil conveying pipeline are better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a connection device for a ground wire of an electric welding machine according to an embodiment of the present disclosure;

FIG. 2 is a side view of a connection device for a ground wire of a welding machine according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a pipe clamping structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of another pipe clamping structure provided by the disclosed embodiment;

FIG. 5 is a schematic structural diagram of a connector and a socket provided by an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another connector and receptacle provided by embodiments of the present disclosure;

FIG. 7 is a schematic structural diagram of another connector and receptacle provided by embodiments of the present disclosure;

FIG. 8 is a schematic structural view of an insulative sleeve provided by an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a flat iron provided in an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The embodiment of the disclosure provides a connecting device for an electric welding machine ground wire, which is suitable for fixing one end of the electric welding machine ground wire on a long-distance oil conveying pipeline. Fig. 1 is a schematic structural diagram of a connection device for a ground wire of an electric welding machine according to an embodiment of the present disclosure. Referring to fig. 1, the coupling device includes a U-shaped pipe clamp 10 and a pipe clamping structure 20.

The U-shaped pipe clamp 10 comprises two opposite strip-shaped portions 11 and a bent portion 12 connected to first ends of the two strip-shaped portions 11, wherein second ends of the two strip-shaped portions 11 are respectively provided with a pipeline clamping structure 20, and the bent portion 12 has a ground wire connecting structure.

In the embodiment of the present disclosure, the two bar portions 11 are symmetrically disposed on two sides of the outer wall of the long-distance oil pipeline 100, and the long-distance oil pipeline 100 is clamped between the pipeline clamping structures 20 on the two bar portions 11; the bent portion 12 is connected to one end of the welding machine ground 200.

The U-shaped pipe clamp with the ground wire connecting structure and the connecting device of the electric welding machine ground wire are formed by the pipeline clamping structure arranged on the U-shaped pipe clamp, the U-shaped pipe clamp comprises two opposite bar-shaped portions and a bending portion connected to the first ends of the two bar-shaped portions, the second ends of the two bar-shaped portions are provided with the pipeline clamping structure, and the U-shaped pipe clamp can be fixed on a long-distance oil conveying pipeline through the pipeline clamping structure. And the bending part is provided with a ground wire connecting structure and can be connected with one end of the ground wire of the electric welding machine, so that one end of the ground wire of the electric welding machine is fixed on the long-distance oil pipeline through a connecting device consisting of the U-shaped pipe clamp and the pipeline clamping structure and is electrically connected. The whole process can not form a weld scar on the surface of the long-distance oil conveying pipeline, can not damage the outer wall of the long-distance oil conveying pipeline, and can ensure that the material performance and the integral attractiveness of the long-distance oil conveying pipeline are better.

In practical application, the U-shaped pipe clamp 10 and the two pipe clamping structures 20 are conductors to ensure that one end of the ground wire of the electric welding machine is electrically connected with a long-distance oil pipeline through a connecting device.

Illustratively, the U-shaped pipe clamp 10 and the two pipe clamping structures 20 may be metal members, which have good conductivity and are beneficial to the instant short circuit of the positive and negative electrodes of the electric welding machine to generate high-temperature electric arcs.

Alternatively, the difference between the distance between the two bar portions 11 and the outer diameter of the long-distance oil pipeline 100 may be smaller than a set value, for example, 10cm, which is beneficial for the two bar portions 11 to clamp the long-distance oil pipeline 100 through the corresponding pipeline clamping structures 20, so that the U-shaped pipe clamp 10 is clamped on the outer wall of the long-distance oil pipeline 100.

Optionally, as shown in fig. 1, the connection device may further include a tab 30 and a receptacle 40.

The connector 30 has a fixed end 31 for fixed connection with one end of the welding bug ground wire 200 and a detachable end 32 opposite to the fixed end 31.

The socket 40 is fixed on the bending portion 12, a groove 41 is arranged on the socket 40, and the dismounting end 32 is clamped in the groove 41.

The socket 40 provided with the groove 41 is fixed on the bending part 12 of the U-shaped pipe clamp 10, one end (namely, the fixed end 31) of the joint 30 is connected with one end of the electric welding machine ground wire 200, the other end (namely, the dismounting end 32) of the joint 30 is clamped in the groove 41 on the socket 40, the joint 30 is detachably connected with the socket 40, so that the electric welding machine ground wire 200 connected with the joint 30 is detachably connected with the U-shaped pipe clamp 10 connected with the socket 40, and the replacement of different U-shaped pipe clamps 10 for the electric welding machine ground wire 200 is facilitated, so that for long-distance oil pipelines 100 with different outer diameters, the corresponding U-shaped pipe clamp 10 is selected to be fixed on the outer wall of the long-distance oil pipeline 100, and the electric welding machine ground wire 200 can be fixed on different long-distance oil.

In a first implementation of the disclosed embodiment, the tube gripping structure 20 may be a threaded rod, as shown in fig. 1.

In the disclosed embodiment, as shown in fig. 1, the screw has a first end 20a for abutting against the outer wall of the long-distance oil pipeline 100 and a second end 20b opposite to the first end 20a of the screw.

Fig. 2 is a side view of a connection device of a ground wire of a welding machine according to an embodiment of the disclosure. Referring to fig. 2 and 1, the bar portion 11 is provided with a screw hole 11a matching with a screw inserted in the screw hole 11a and located at both sides of the screw hole 11 a.

When the connecting device is installed on a long-distance oil pipeline 100, the two strip parts 11 of the U-shaped pipe clamp 10 are symmetrically positioned at two sides of the long-distance oil pipeline 100, the screw rod is inserted into the screw hole 11a arranged on the strip parts 11, and the axis of the screw rod is vertical to the axis of the long-distance oil pipeline 100. The screw is rotated, the U-shaped pipe clamp 10 is fixed on the outer wall of the long-distance oil pipeline 100 and is kept still, and the screw converts the rotation motion into the linear motion along the axial direction of the screw, so that the screw can be close to or far away from the long-distance oil pipeline 100. When both screws move against the long-distance oil pipeline 100, the long-distance oil pipeline 100 is sandwiched between the two screws, thereby fixing the U-shaped pipe clamp 10 where the two strip portions 11 are located on the outer wall of the long-distance oil pipeline 100.

In addition, the screw rods can move in the direction away from the long-distance oil pipeline 100, the distance between the two screw rods is increased, and the U-shaped pipe clamp 10 can be conveniently detached from the long-distance oil pipeline 100.

In practical application, the sum of the length of the two screws and the outer diameter of the long-distance oil pipeline 100 is larger than the distance between the two strip-shaped parts 11, so that the two screws can move to be abutted against the long-distance oil pipeline 100.

Fig. 3 is a schematic structural diagram of a pipe clamping structure according to an embodiment of the present disclosure. Referring to fig. 3, in a second implementation of the embodiment of the present disclosure, the pipe clamping structure 20 may be a spring, which is located between two bar-shaped portions 11.

In the disclosed embodiment, as shown in fig. 3, the spring has a first end 20c for abutting against the outer wall of the cylindrical pipe 100 and a second end 20d opposite to the first end 20c of the spring, the second end 20d of the spring being fixed to the bar 11.

When the connecting device is installed on a long-distance oil pipeline 100, the two strip parts 11 of the U-shaped pipe clamp 10 are symmetrically positioned on two sides of the long-distance oil pipeline 100, the spring has certain elasticity and is clamped between the strip parts 11 and the long-distance oil pipeline 100, so that the two strip parts 11 are pressed on two sides of the outer wall of the long-distance oil pipeline 100 through the spring, and the U-shaped pipe clamp 10 is fixed on the outer wall of the long-distance oil pipeline 100.

In addition, the U-shaped pipe clamp 10 can be attached to the long distance oil pipeline 100 or detached from the long distance oil pipeline 100 by the elasticity of the spring.

In practical applications, the sum of the thicknesses of the two springs and the outer diameter of the long-distance oil pipeline 100 is greater than the distance between the two bar portions 11, so as to ensure that the springs are compressed when being clamped between the bar portions 11 and the long-distance oil pipeline 100, and the two bar portions 11 can be pressed on the two sides of the outer wall of the long-distance oil pipeline 100 through the springs.

The spring may be a pagoda-shaped spring or a belleville spring, for example, and the extension direction of the spring is perpendicular to the arrangement surface of the spring.

Fig. 4 is a schematic structural diagram of another pipe clamping structure provided in the embodiment of the present disclosure. Referring to fig. 4, in a third implementation of the embodiment of the present disclosure, the pipe clamping structure 20 may be arc-shaped pieces, and the arc-shaped pieces on the two strip-shaped portions 11 are bent toward each other.

In the disclosed embodiment, as shown in fig. 4, the arc-shaped piece has a first end 20e for approaching the cylindrical pipe 100 and a second end 20f opposite to the first end 20e of the arc-shaped piece, and the second end 20f of the arc-shaped piece is fixedly connected with the corresponding strip-shaped portion 11 of the pipe clamping structure 20.

Install this connecting device on long distance oil pipeline 100, two bar portions 11 symmetric positions of U type pipe strap 10 are in the both sides of long distance oil pipeline 100, the one end and the bar portion 11 of arc piece are connected, the other end of arc piece is close to long distance oil pipeline 100, therefore the distance between two arc pieces is less than the distance between two bar portions 11, can with long distance oil pipeline 100 card in the region that two bar portions 11 and two arc pieces enclose, thereby fix U type pipe strap 10 on long distance oil pipeline 100's outer wall.

In addition, the arc-shaped piece has certain flexibility, so that the U-shaped pipe clamp 10 can be installed on the long-distance oil pipeline 100, and the U-shaped pipe clamp 10 can also be detached from the long-distance oil pipeline 100.

In practical applications, the inner diameter of the arc-shaped pieces may be smaller than the outer diameter of the long-distance oil pipeline 100, so as to ensure that the distance between the arc-shaped pieces corresponding to the two bar-shaped portions 11 is smaller than the outer diameter of the long-distance oil pipeline 100.

Illustratively, the arcuate tab and the U-shaped clamp 10 may be of one-piece construction.

Fig. 5 is a schematic structural diagram of a connector and a socket provided in an embodiment of the present disclosure. Referring to fig. 5, in a fourth implementation manner of the embodiment of the present disclosure, a bump 321 may be disposed on an outer wall of the detachable end 32, a first strip-shaped recess 411 and a second strip-shaped recess 412 that are matched with the bump 321 are disposed on an inner wall of the groove 41, a first end of the first strip-shaped recess 411 is located at the opening, the first strip-shaped recess 411 extends along a depth direction of the groove 41, one end of the second strip-shaped recess 412 is communicated with a second end of the first strip-shaped recess 411, and an extending direction of the second strip-shaped recess 412 is perpendicular to the extending direction of the first strip-shaped recess 411.

In the above implementation, the inner wall of the groove 41 is provided with the first strip-shaped recess 411 matched with the bump 321, the first end of the first strip-shaped recess 411 is located at the opening, the extending direction of the first strip-shaped recess 411 and the depth direction of the groove 41 are the same, and the bump 321 of the detachable end 32 of the connector 30 can enter the groove 41 through the first strip-shaped recess 411. When the protrusion 321 is moved to the connection point of the second strip-shaped recess 412 and the first strip-shaped groove 411 and the connector 30 is rotated, the protrusion 321 is rotated with the connector 30 through the second strip-shaped recess 412 to leave the first strip-shaped recess 412, and the inner wall of the groove 41 blocks the protrusion 321 in the groove 41, so that the connector 30 is inserted into the socket 40.

In addition, when the connector 30 needs to be pulled out of the socket 40, the connector 30 is also rotated, so that the annular projection 321 is rotated to the connection position of the second strip-shaped recess 412 and the first strip-shaped groove 411 through the second strip-shaped recess 412, and the projection 321 can leave the groove 41 through the first strip-shaped groove 411.

In summary, insertion and removal of the connector 30 into and out of the receptacle 40 is facilitated.

Fig. 6 is a schematic structural diagram of another connector and socket provided in the embodiments of the present disclosure. Referring to fig. 6, in a fifth implementation manner of the embodiment of the present disclosure, an external thread 32a is provided on the detachable end 32, and an internal thread 41a matching with the external thread 32a is provided on an inner wall of the groove 41. The detachable end 32 of the connector 30 is screwed into the groove 41 of the socket 40, so that the installation and the detachment are convenient.

Fig. 7 is a schematic structural diagram of another connector and socket provided in the embodiments of the present disclosure. Referring to fig. 7, in a sixth implementation manner of the embodiment of the present disclosure, a claw 322 is disposed on an outer wall of the detachable end 32, a tapered protrusion 42 is disposed on an outer wall of an end of the socket 40 where the groove 41 is disposed, and an outer diameter of the tapered protrusion 42 gradually increases along a direction away from an opening of the groove 41.

In the above implementation, the jaws 322 have a certain flexibility. When the connector 30 is inserted into the groove 41 of the socket 40, the jaws 322 move on the outer wall of the tapered protrusion 42 of the socket 40 in the axial direction of the tapered protrusion 42, and may be gradually opened as the outer diameter of the tapered protrusion 42 is gradually increased. After the jaws 322 are continuously moved away from the tapered projections 42, the jaws 322 can be automatically tightened to catch on the large diameter ends of the tapered projections 42, thereby securing the connector 30 in the recess 41 of the socket 40.

In addition, when it is desired to pull the connector 30 from the socket 40, the pawl 322 can be automatically tensioned from the large diameter end of the tapered projection 42 to the small diameter end of the tapered projection 42.

Fig. 8 is a schematic structural diagram of an insulating sleeve according to an embodiment of the disclosure. Referring to fig. 8, in a seventh implementation manner of the embodiment of the present disclosure, the connection device may further include an insulating sleeve 50, and the insulating sleeve 50 is sleeved outside the joint 30.

By providing the insulating sleeve 50 around the contact 30, it is possible to protect the contact from electric leakage when the contact 30 is inserted into or removed from the socket 40, thereby improving the safety of the connector.

Fig. 9 is a schematic structural diagram of a flat iron provided in an embodiment of the present disclosure. Referring to fig. 9, in an eighth implementation of the embodiment of the present disclosure, the connecting device may further include a flat iron 60.

The flat iron 60 has a clamping end 61 for clamping one end of the welding bug ground wire and a connecting end 62 opposite the clamping end 61, the connecting end 62 being connected to the bent portion 12.

The flat iron 60 can gather the messy wires together to facilitate connection and fixation.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims (10)

1. The utility model provides a connecting device of electric welding ground wire, its characterized in that, connecting device includes U type pipe strap (10) and pipe clamp tight structure (20), U type pipe strap (10) are including relative two bar portions (11) that set up and connect flexion (12) of the first end of two bar portions (11), the second end of two bar portions (11) is equipped with respectively pipe clamp tight structure (20), flexion (12) have ground wire connection structure.

2. The connection device according to claim 1, wherein the pipe clamping structure (20) is a screw, the bar (11) having a threaded hole (11a) matching the screw, the screw being inserted in the threaded hole (11 a).

3. A connection device according to claim 1, characterized in that the pipe clamping structure (20) is a spring, which is located between the two strip-shaped portions (11).

4. A coupling device according to claim 1, wherein the pipe gripping structures (20) are arcuate pieces, the arcuate pieces on the two strip portions (11) being bent towards each other.

5. A connection device according to any of claims 1 to 4, characterized in that it further comprises a nipple (30) and a socket (40);

the joint (30) is provided with a fixed end (31) fixedly connected with one end of the electric welding machine ground wire (200) and a dismounting end (32) opposite to the fixed end (31);

socket (40) are fixed on flexion (12), be equipped with recess (41) on socket (40), dismouting end (32) joint is in recess (41).

6. The connecting device according to claim 5, wherein a bump (321) is arranged on the outer wall of the detachable end (32), a first strip-shaped pit (411) and a second strip-shaped pit (412) matched with the bump (321) are arranged on the inner wall of the groove (41), the first end of the first strip-shaped pit (411) is located at the opening, the first strip-shaped pit (411) extends along the depth direction of the groove (41), one end of the second strip-shaped pit (412) is communicated with the second end of the first strip-shaped pit (411), and the extending direction of the second strip-shaped pit (412) is perpendicular to the extending direction of the first strip-shaped pit (411).

7. The connecting device according to claim 5, wherein the detachable end (32) is provided with an external thread (32a), and the inner wall of the groove (41) is provided with an internal thread (41a) matched with the external thread (32 a).

8. The connecting device according to claim 5, wherein a claw (322) is arranged on the outer wall of the disassembling end (32), a tapered convex block (42) is arranged on the outer wall of one end of the socket (40) provided with the groove (41), and the outer diameter of the tapered convex block (42) is gradually increased along the opening direction far away from the groove (41).

9. The connecting device according to claim 5, characterized in that it further comprises an insulating sleeve (50), said insulating sleeve (50) being fitted over said joint (30).

10. A connection device according to any of claims 1-4, characterized in that the connection device further comprises a flat iron (60), the flat iron (60) having a clamping end (61) for clamping one end of the welding bug ground wire and a connecting end (62) opposite the clamping end (61), the connecting end (62) being connected to the bent portion (12).

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