Powerful pliers for pipe butt-joint clamping

Abstract

The invention discloses a pair of powerful pliers for pipe butt-joint clamping. The powerful pliers comprise a pliers head and a pliers body, wherein the pliers body comprises a large pliers handle, asmall pliers handle, a disengage handle, a tension spring, a supporting rod and a regulating screw; the front end of the large pliers handle is riveted and welded with a slide rod, and is perpendicular to the large pliers handle; the pliers head comprises a movable pliers head and a sliding pliers head; the sliding pliers head is arranged the slide rod in a sleeving mode, and is fixed in up-downposition through a fastening screw at the rear end; the movable pliers head is L-shaped, and the rear end of the movable pliers head is hinged with the large pliers handle and the small pliers handle;the front end of the sliding pliers head and the front end of the movable pliers head are each provided with a widened clamping platform; the two ends of the clamping platform are provided with up-warp limiting parts, so that the clamping surfaces are trapezoidal, and one or two clamping claws are hinged in the clamping surfaces; and a butt-joint tube is placed between upper and lower clamping surfaces, so that fixed splicing is realized through clamping of upper and lower clamping claws; and seam-slicing welding is performed in a seam between the upper and lower clamping claws.

Description

technical field [0001] The invention relates to a pliers hand tool, in particular to a pipe butt clamping pliers. Background technique [0002] There are many gas and liquid pipelines in all walks of life. These continuous pipelines need to be connected during construction, and different pipelines have different connection methods. For example, ordinary water pipes are connected with standard threads and special accessories. These accessories are such as internal and external joints, tees, elbows, etc. For the connection of stainless steel or seamless steel pipes with thicker walls, flange connections are usually used, or the two pipe heads are directly welded, where welding is Most common practice. [0003] When welding two round pipes with the same diameter, in order to ensure the welding quality, it is necessary to accurately align the two pipes. This is a key task. For the butt joint of pipes with a diameter less than 30mm, a universal clamping tool is often used ( Suc...

AI Technical Summary

Problems solved by technology

[0003] When welding two round pipes with the same diameter, in order to ensure the welding quality, it is necessary to accurately align the two pipes. This is a key task. For the butt joint of pipes with a diameter less than 30mm, a universal clamping tool is often used ( Such as water pump pliers, pipe wrench, round pliers, etc.), although this is a more convenient and quick method, but because the width of the clamping jaws of these tools is small, it is difficult to clamp them reliably, and it is not convenient for welding. The butt joint of two individual pipes with larger diameters is often placed in a V-shaped tool. When the length of the two pipes exceeds the length of the V-shaped tool, the coaxiality of the two pipes must be carefully adjusted. , in maintenance and installation, it is quite time-consuming and labor-intensive work to connect two suspended pipes. Therefore, in the existing pipe butt joint, not only the efficiency is low, but also the welding misalignment of the two pipe heads due to improper alignment is also a problem. recurring things

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