Novel ground wire clamp for stainless steel pipeline welding

Abstract

The utility model belongs to a wire clamp, and particularly relates to a novel ground wire clamp for stainless steel pipeline welding. The novel ground wire clamp for stainless steel pipeline welding comprises a ground wire clamp body, the front end of the ground wire clamp body is fixedly connected with a touch panel assembly, and the rear end of the ground wire clamp body is connected with a pin through a spring buckle assembly. The ground wire clamp has the remarkable effects that the ground wire clamp can be fixed on a pipeline through simple operation under the condition that the welding operation difficulty is not increased, and the welding quality cannot be influenced by the rotation of the pipeline or the length of the pipeline. Damage and scratch of a pipeline base material caused by the ground wire clamp are reduced, so that the construction cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to a wire clamp, and specifically relates to a new ground wire clamp for welding stainless steel pipelines. Background Art

[0002] There are currently two types of quick welding grounding clamps, one is the most common grounding clamp that comes with welding, and the other is a grounding clamp that has been simply modified. Both of these grounding clamps have the following problems: (1) When using the grounding clamp that comes with the welding machine for grounding welding, the grounding clamp that comes with the welding machine is generally clamped on the non-welding end face of the pipe, which will form a loop during the welding process. The farther the grounding clamp is from the welding gun, the longer the loop formed, the greater the outflow current loss of the welding machine, and the lower the welding voltage, which is not conducive to the stability of the welding arc, and will also cause unnecessary power loss of the welding machine, resulting in unnecessary increase in welding current, which increases the power consumption of the welding process. At the same time, due to the exhaustion of welding current and the reduction of welding voltage, the difficulty of welding arc initiation increases (especially for DC welding machines), which directly affects the welding efficiency and welding quality, and brings certain difficulties to welding.

[0003] (2) To solve the problem described in (1) and shorten the length of the welding grounding loop, during the prefabrication and installation of the pipeline, the welding bottom line clamp is generally modified in a simple way, and two semicircles are welded at both ends of the bottom line clamp, so that the ground wire clamp can be clamped closer to the weld and the deformation resistance of the construction is improved. Since this simple ground wire clamp is not tightly connected to the pipeline and there is a local gap between the two, the air in the gap between the simple ground wire clamp and the pipeline will be ionized, thereby generating an arc, destroying the passivation film on the surface of the pipeline mother material, causing local heat melting of the mother material, causing the mother material grain to change and damaging the mother material. The harm caused by this damage during the prefabrication and installation of stainless steel pipelines cannot be removed by pickling and passivation surface treatment methods. In addition, when welding larger-sized pipelines, the simple modified ground wire clamp is in a tight state. When the pipeline is rotated, the ground wire clamp is easy to fall off and scratch the mother material.

[0004] Therefore, a new stainless steel pipe welding ground clamp is needed. Utility Model Content

[0005] Aiming at the defects of the prior art, the invention provides a new ground wire clamp for welding a stainless steel pipeline.

[0006] The invention is realized as follows: a new ground wire clamp for welding stainless steel pipes, which comprises a ground wire clamp body, the front end of which is fixedly connected to a touch plate assembly, and the rear end of which is connected to a pin via a spring buckle assembly.

[0007] As described above, a new type of grounding clamp for stainless steel pipe welding, wherein a hook is provided on the top of the touch plate assembly.

[0008] As described above, a new type of grounding clamp for stainless steel pipeline welding, wherein a stainless steel spring chain is arranged between the spring buckle assembly and the pin.

[0009] In the novel grounding clamp for stainless steel pipe welding as described above, the shape of the contact plate assembly matches the shape of the stainless steel pipe.

[0010] As described above, a new type of grounding clamp for welding stainless steel pipes, wherein copper nails are embedded on the touch plate assembly, and the touch plate assembly is connected to the base material through the copper nails.

[0011] The remarkable effects of this new type are: (1). The newly invented stainless steel pipe grounding clamp is fixed with a stainless steel chain in combination with a spring and a lock, and a copper nail is embedded in the contact plate. The copper nail material and the copper screw material are used to facilitate conductivity. At the same time, no less than 8 screws are set to facilitate the connection between the contact plate and the steel pipe without generating gaps. Because a stainless steel spring is used in the chain, the spring will generate a tightening force after stretching, which is convenient for fixing on the pipe and is not easy to loosen after fixing. The quality of welding is guaranteed in forming a reliable connection, and damage to the parent material is eliminated. (2). It is simple and easy to use, not easy to damage, reusable, and can be applied to the welding of stainless steel pipes of various specifications and models, thereby reducing the production cost of the enterprise and improving production efficiency.

[0012] In summary, the wire clamp of the present application can fix the ground wire clamp on the pipeline through simple operation without increasing the difficulty of welding operation, and the welding quality will not be affected by the rotation of the pipeline or the length of the pipeline. The damage and scratches of the pipeline base material caused by the ground wire clamp are reduced, thereby reducing construction costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Structural diagram of a new type of grounding clamp for welding stainless steel pipes.

[0014] In the figure: 1. Contact plate assembly; 2. Ground wire clamp body; 3. Hook; 4. Spring buckle assembly; 5. Stainless steel spring chain; 6. Pin. DETAILED DESCRIPTION

[0015] The utility model relates to a new type of ground wire clamp for stainless steel pipeline welding, which is composed of a contact plate, a clamp body, a spring lock hole and a chain.

[0016] The method of use is as follows: copper nails are embedded on the contact plate at the joint between the contact plate and the outer wall of the stainless steel pipe, and the copper nails are used to connect the contact plate to the base material. The contact plate is fixed to the pipe by a stainless steel chain, and the stainless steel chain is put on the hook 3, and the spring buckle is adjusted so that the contact plate is in close contact with the outer wall of the pipe. The ground wire clamp is clamped on the clamp body to realize a closed loop. If the stainless steel chain is too long, the excess chain can be hung with a pin 6.

[0017] Some specific test usage descriptions are given below.

[0018] We used actual production for verification. In the construction of stainless steel pipe prefabrication in the actual workshop, 14", 12" and 8" stainless steel pipes were taken as examples. In the actual production in the workshop for 30 days, 4 skilled welders were selected and divided into 2 groups, 2 people in each group, and 90 stainless steel welds / group were welded using the old simple modified grounding clamp and the new stainless steel grounding clamp, 60 stainless steel welds of each specification. After using the new grounding clamp, the incidence of parent material damage accidents was 0; while the old simple modified grounding clamp had 1 parent material arc injury and 3 parent material scratches. Check the tightness of the old simple modified grounding clamp and the new grounding clamp with the parent material during construction, and randomly check 10 groups of samples each. No loosening was found after using the new grounding clamp, while 2 groups of loosening were found in the same batch of 10 groups of the old simple grounding clamp, which poses a safety and quality hazard.

[0019] In addition, in actual use, the general service life of the new stainless steel grounding clamp can reach 3 months, which is comparable to the life of the original old-fashioned simple grounding clamp.

Claims

1. A new type of ground wire clamp for stainless steel pipeline welding, characterized by: It comprises a ground wire clamp body (2), the front end of the ground wire clamp body (2) is fixedly connected to the touch panel assembly (1), and the rear end of the ground wire clamp body (2) is connected to the pin (6) via a spring buckle assembly (4); A hook (3) is provided at the top of the touch panel assembly (1); A stainless steel spring chain (5) is arranged between the spring buckle assembly (4) and the pin (6); The shape of the touch panel assembly (1) matches the shape of the stainless steel tube; The touch panel assembly (1) is inlaid with copper nails and connected to the base material via the copper nails.

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