Welding tool for square cabin framework
By designing a welding fixture that includes a main frame and positioning holes, the problems of time-consuming scribing and post-weld deformation during the welding process of the container frame were solved, achieving an efficient and precise welding process and ensuring product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN FIRST MACHINERY GRP
- Filing Date
- 2024-12-29
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing technology, the scribing process in the welding of the container frame is time-consuming and seriously affects the welding efficiency. Furthermore, the frame is prone to deformation after welding, making it difficult to guarantee high precision and rapid production.
Design a welding fixture that includes a main frame, horizontal adjustment blocks, limit blocks, horizontal templates, and clamping tools. Connect these components by welding, pre-drill positioning holes and numbering, to achieve rapid fixing and positioning of profiles, avoid scribing process, and ensure the accuracy and stability of the welding process.
It improves welding efficiency, reduces pre-weld preparation time, effectively controls post-weld deformation, and ensures the dimensional accuracy and structural integrity of the product.
Smart Images

Figure CN224254549U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a welding auxiliary tooling, specifically to a welding tooling for a container frame. Background Technology
[0002] The frame plays multiple roles in the entire modular shelter structure: bearing the load of the entire superstructure (such as the top cover, left and right side walls, front and rear walls, and all functional components inside the shelter), and welding it with the left and right side walls and front and rear walls to form a complete shelter body; it also withstands some of the bending and torsional loads generated during shelter operation. During the production of the shelter chassis frame, the profiles are laid flat on a plane, and then each contact point is welded and fixed. After the welds on the top and sides are completed, the profiles are flipped to complete the overall welding. Due to the large number of frames, the pre-welding marking process is very time-consuming, severely impacting welding efficiency. Furthermore, the frame contains threaded holes for installing components, requiring very strict requirements on the relative positions of the various frames. To ensure these high-precision dimensions and enable rapid production, the use of welding fixtures that cover the entire welding process, are highly expandable, adaptable, and include positioning and clamping functions is essential. This welding fixture can fix and weld square tube profiles of various sizes, avoiding the marking process, thereby improving production efficiency and ensuring product quality. Utility Model Content
[0003] This utility model provides a welding fixture for a modular cabin frame, which solves the problems of time-consuming processing by scribing, which seriously affects welding efficiency and causes warping and deformation at both ends after welding.
[0004] This utility model is achieved through the following technical solution:
[0005] A welding fixture for a modular cabin frame includes a main frame made of I-beams, a horizontal adjustment block located at the lower layer of the main frame, a limiting block located at the upper layer of the main frame and distributed around the periphery of the main frame, and a horizontal template with positioning holes in the middle. A clamping tool is fixedly connected to the horizontal template, and the positioning holes have a certain number and sequence, which are matched with the profile square tubes that make up the frame.
[0006] The horizontal adjustment block, limit block, and horizontal template are connected to the main frame by welding.
[0007] Movable lifting rings are installed around the main frame.
[0008] The main frame is welded from I-beams of different specifications.
[0009] The main frame has horizontal templates with positioning holes welded at its four corners.
[0010] Pre-fabrication of horizontal template positioning holes before welding.
[0011] This utility model of a container frame welding fixture is used for welding various components of the container chassis. It reduces the pre-welding preparation process, improves work efficiency, effectively controls post-weld deformation of the frame, and ensures product dimensional accuracy. Attached Figure Description
[0012] Figure 1 is a schematic diagram of the structure of this utility model, wherein Figure 1b yes Figure 1a Top view;
[0013] Figure 2 This is a schematic diagram of the tooling and the cabin frame of this utility model before welding. Detailed Implementation
[0014] As shown in Figures 1 and 2, this utility model is a welding fixture for a modular cabin frame, including a bottom horizontal adjustment block 2, horizontal templates (parts 4, 9, 10, 12, 13) with positioning holes in the middle, horizontal templates 14 with positioning holes at the four corners, a main frame composed of I-beams (parts 1, 7, 8, 11), surrounding limiting blocks 3, clamping tools 5, and moving lifting rings 6. The manufacturing process of the entire modular cabin frame welding fixture is as follows: first, the parts are welded together, and then they are machined according to the required dimensions to ensure flatness and the accuracy of the positioning holes. Parts 1, 7, 8, and 11 are I-beams of different specifications, which are welded together to form the main frame of the entire welding fixture. The horizontal adjustment block 2, located at the lower layer of the I-beam frame, is also fixed by welding, and its function is to ensure the positional accuracy of the entire fixture. The frame limiting blocks 3 and the horizontal templates on the upper layer of the frame are also connected to the frame by welding. The limiting blocks can realize the rapid placement of the profile frame, thereby determining the overall external dimensions of the modular cabin frame. Positioning holes are pre-drilled on the horizontal template. These holes are numbered and ordered to match the square tube profiles that make up the frame, thus avoiding the need for marking and enabling rapid assembly welding. Clamping tools located on the horizontal template can suppress frame deformation. The movable lifting rings 6 on the periphery of the frame facilitate hoisting and transportation.
[0015] In use, the profiles for the modular cabin frame are placed on a template according to the design plan. A clamping device then presses the profiles into position, allowing workers to weld on the frame, primarily at the top and sides of the profile joints. The back weld can be completed by flipping the chassis frame, ultimately achieving high efficiency and high quality in the manufacturing of the entire product. The use of the frame welding fixture reduces the need for marking and dimensional inspection, shortens pre-welding time, improves work efficiency, and ensures the relative positions of each frame element, fully meeting subsequent functional requirements. Simultaneously, the welding fixture allows for modular processing of the chassis frame, dividing the entire chassis into multiple small areas. These grids support and control each other, avoiding large welding deformations caused by blind welding, thus solving the problem of warping at both ends after welding and meeting structural dimensional requirements.
Claims
1. A welding fixture for a modular shelter frame, characterized in that: It includes a main frame, a horizontal adjustment block located at the lower layer of the main frame, a limiting block located at the upper layer of the main frame and distributed around the periphery of the main frame, and a horizontal template with positioning holes in the middle. A clamping tool is fixed to the horizontal template, and the positioning holes are numbered and sequential, matching the profile square tubes that make up the skeleton.
2. The welding fixture for a modular shelter frame according to claim 1, characterized in that: The horizontal adjustment block, limit block, and horizontal template are connected to the main frame by welding.
3. The welding fixture for a modular shelter frame according to claim 1, characterized in that: Movable lifting rings are installed around the main frame.
4. The welding fixture for a modular shelter frame according to claim 1, characterized in that: The main frame is welded from I-beams of different specifications.
5. The welding fixture for a modular shelter frame according to claim 1, characterized in that: The main frame has horizontal templates with positioning holes welded at its four corners.
6. The welding fixture for a modular shelter frame according to claim 1, characterized in that: Pre-fabrication of horizontal template positioning holes before welding.