A V-shaped workpiece welding fixture

CN224424762UActive Publication Date: 2026-06-30SHANGHAI XIANSHAN MARINE MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI XIANSHAN MARINE MASCH CO LTD
Filing Date
2025-07-31
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the existing technology, the connection between the insulation plate and the two fixed corner pieces of the LNG ship's internal cargo containment system is unstable, resulting in low production efficiency and low welding quality.

Method used

Design a V-shaped workpiece welding fixture, including a frame, hydraulic cylinder, pneumatic cylinder, chuck, workpiece placement table, rotating shaft, bearing, connecting plate and connecting rod. The fixture achieves stable clamping and rotation of the workpiece through hydraulic and pneumatic systems, thereby improving welding stability and speed.

Benefits of technology

It improves the welding stability and production rate of the two-sided fixed corner pieces, enhances the welding quality, and solves the problem of low production efficiency caused by unstable connections.

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Abstract

This utility model relates to a V-shaped workpiece welding fixture, including a frame, a hydraulic cylinder, a pneumatic cylinder, a chuck, a workpiece placement table, a rotating shaft, bearings, connecting plates, and connecting rods. Bearings are vertically connected to both sides of the frame. The workpiece placement table includes a table surface, support plates, and mounting plates. The table surface has a V-shaped cross-section with an obtuse angle. Support plates are fixedly connected to both sides of the table surface. A rotating shaft is vertically connected to the middle of each support plate, passing through the bearings. A connecting rod is fixedly connected to the end of the rotating shaft, and the other end of the connecting rod is hinged to the output end of the pneumatic cylinder. The bottom of the pneumatic cylinder is hinged to the middle of the side of the frame. The two ends of the mounting plate are respectively connected to the bottom of the two support plates, and connecting plates are vertically connected to the two side edges of the mounting plate. Chucks are hinged to the ends of both sides of the table surface, with the tail of the chuck hinged to the output end of the hydraulic cylinder. The bottoms of the two hydraulic cylinders are respectively hinged to the two connecting plates.
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