A lever-type pressure applicator

By designing a lever-type clamping device, the problem of welding deformation in thin-walled planar frames was solved, enabling adaptive clamping of frames of different specifications and improving welding quality and flatness.

CN122274545APending Publication Date: 2026-06-26JILIN DONGFANG MACHINERY RESEARCH & DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202610543996.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-23
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the existing technology, there is a problem of welding deformation when welding thin-walled planar frames, especially at the junction of square tubes where heat is concentrated, causing the frame to deform as a whole. In addition, the existing fixtures cannot adapt to the welding requirements of different specifications.

Method used

A lever-type clamping device was designed, including a base, a rotating base, a pressure rod, a pressure head assembly, a snap-fit ​​assembly, and a translational base. By rotating, translating, and adjusting the clamping force, it can adapt to the welding position of planar frames of different specifications and prevent welding deformation.

Benefits of technology

It effectively suppresses deformation during the welding process of thin-walled planar frames, improves welding quality and frame flatness, and is suitable for welding planar frames of various sizes.

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Abstract

This invention relates to the field of welding fixture technology, specifically a lever-type clamping device, comprising a base, a rotating base, a pressure rod, a pressure head assembly, a snap-fit ​​assembly, and a sliding base. The lower fixed part of the rotating base is fixedly mounted on the side of the base, and the upper rotating part is rotatably connected to the lower fixed part. The hinged end of the pressure rod has a hinge hole and is hinged to the hinge shaft at the upper end of the rotating base through the hinge hole. The other end of the pressure rod is movably connected to the snap-fit ​​assembly. The sliding base is snap-fitted into place with the snap-fit ​​assembly. The pressure head assembly is movably mounted on the pressure rod. The pressure rod of this invention can rotate in a horizontal plane, the pressure head assembly can move and lock along the axial direction of the pressure rod, the telescopic rod is adjustable in length, and the sliding base can slide laterally. It can clamp the welding position on a planar frame and is suitable for planar frames that can be placed on a base. The lever-type structure clamps the welding position on the planar frame, preventing the thin-walled square tube from warping and deforming under the high temperature of welding.
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