Fixing device for welding bridge steel structure

By designing a fixing device for welding bridge deck panels, the workpiece is pre-deformed before welding by using the jack force, which solves the problem of deformation after welding and improves the stability of the bridge.

CN222511432UActive Publication Date: 2025-02-21JIANGSU SANGONG STEEL STRUCTURE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420732403.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-09
Publication Date
2025-02-21
Estimated Expiration
2034-04-09

AI Technical Summary

Technical Problem

After welding, the bridge deck panel is prone to deformation due to gravity, resulting in a decrease in the stability of the bridge.

Method used

Design a fixing device for welding bridge steel structures, including columns, workbenches, workpiece fixtures, machining parts, support shafts and jacks. The jack exerted force, the workpiece is pre-deformed in the opposite direction before welding, thereby offsetting the deformation after welding.

Benefits of technology

It effectively offsets deformation after welding, ensures that the workpiece does not deform after welding, and improves the stability of the bridge.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222511432U_ABST
    Figure CN222511432U_ABST
Patent Text Reader

Abstract

The utility model discloses a fixing device for welding a bridge steel structure, and belongs to the technical field of profile steel machining. Comprising stand columns and a workbench fixed between the stand columns, a plurality of workpiece clamps are fixed to the workbench, first supporting shafts and second supporting shafts are arranged on the lower surface of the workbench, the first supporting shafts are distributed at the two ends of the workbench, and the second supporting shafts are located in the middle of the workbench. The diameter of the second supporting shaft is smaller than that of the first supporting shaft, a machined part is arranged below the first supporting shaft and the second supporting shaft, and a jack is arranged below the machined part. The device is novel and simple in structure and convenient to use; the supporting shafts with different radiuses are arranged on the workbench, the workpiece is pre-deformed in the opposite direction through the jack before welding, deformation after welding is counteracted, and it is guaranteed that the workpiece does not deform after welding.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of steel processing, in particular to a fixing device for welding a bridge steel structure. Background Art

[0002] The bridge deck in a steel structure bridge is welded from a number of bridge deck units. In the prior art, the bridge deck is easily deformed due to the effect of gravity after welding, and the deformed bridge deck is likely to cause a decrease in bridge stability. If the bridge deck is welded using a reverse deformation method, the deformation problem can be solved. Therefore, a fixing device for welding a bridge steel structure is needed to solve the problem of deformation of the bridge deck after welding. Summary of the invention

[0003] The utility model discloses a fixing device for welding a bridge steel structure, which makes a welded part deform in the opposite direction before welding to offset the deformation after welding, so that the workpiece does not deform after welding.

[0004] The utility model is realized by the following technical solutions:

[0005] A fixing device for welding bridge steel structures includes columns and a workbench fixed between the columns, a plurality of workpiece clamps are fixedly connected below the workbench, a workpiece is connected below the workpiece clamps, a support shaft A and a support shaft B are provided between the lower surface of the workbench and the upper surface of the workpiece, the support shaft A are distributed at both ends of the workbench, the support shaft B is located in the middle of the workbench, the diameter of the support shaft B is smaller than the diameter of the support shaft A, and a jack is provided below the workpiece.

[0006] The jack is located below the workpiece and directly below the support shaft B.

[0007] The diameter of the support shaft B differs from that of the support shaft A by 2-5 mm.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] The fixing device of the utility model has a novel and simple structure and is easy to use; in the structure, supporting shafts with different radii are arranged on the workbench, and the workpiece is pre-deformed in the opposite direction by a jack before welding, which offsets the deformation after welding and ensures that the workpiece is not deformed after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 1In the figure: 1. Column; 2. Workbench; 3. Jack; 4. Workpiece; 5. Support axis A; 6. Support axis B; 7. Workpiece fixture. DETAILED DESCRIPTION

[0012] The utility model is further described below in conjunction with the accompanying drawings:

[0013] A fixing device for welding a bridge steel structure comprises columns 1 and a workbench 2 fixed between the columns 1, a plurality of workpiece fixtures 7 are fixedly connected to the bottom of the workbench 2, a workpiece 4 is connected to the bottom of the workpiece fixture 7, a support shaft armor 5 and a support shaft B 6 are provided between the lower surface of the workbench 2 and the upper surface of the workpiece 4, the support shaft armor 5 is distributed at both ends of the workbench 2, the support shaft B 6 is located in the middle of the workbench 2, the diameter of the support shaft B 6 is smaller than the diameter of the support shaft armor 5, and a jack 3 is provided below the workpiece 4.

[0014] The jack 3 is located below the workpiece 4 and directly below the support shaft B 6 .

[0015] The diameter of the support shaft B 6 differs from the diameter of the support shaft A 5 by 2-5 mm.

[0016] As shown in the attached figure of the instruction manual Figure 1 As shown, a fixing device for welding a bridge steel structure comprises columns 1 and a workbench 2 fixed between the columns 1, a plurality of workpiece fixtures 7 are fixedly connected to the bottom of the workbench 2, a workpiece 4 is connected to the bottom of the workpiece fixture 7, a support shaft armor 5 and a support shaft B 6 are provided between the lower surface of the workbench 2 and the upper surface of the workpiece 4, the support shaft armor 5 is distributed at both ends of the workbench 2, the support shaft B 6 is located in the middle of the workbench 2, the diameter of the support shaft B 6 is smaller than the diameter of the support shaft armor 5, and a jack 3 is provided below the workpiece 4.

[0017] The jack 3 is located below the workpiece 4 and directly below the support shaft B 6 .

[0018] The diameter of the support shaft B 6 is 2 mm smaller than the diameter of the support shaft A 5 .

[0019] The use process of this device is as follows: fix the workpiece 4 under the workbench 2 through the workpiece clamp 7, and apply force to the workpiece 4 through the jack. Since the diameter of the middle support shaft B 6 is smaller than the diameter of the support shaft A 5 at both ends, the workpiece is deformed by the force. The deformation before welding is opposite to the deformation of the workpiece after welding. Therefore, the welding with this device offsets the deformation of the workpiece after welding.

[0020] The utility model has a novel and simple structure and is easy to use; a support shaft with different radii is arranged on the workbench, and the workpiece is pre-deformed in the opposite direction by a jack before welding, which offsets the deformation after welding and ensures that the workpiece is not deformed after welding.

[0021] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.

Claims

1. A fixing device for welding a bridge steel structure, characterized in that: The invention comprises columns (1) and a workbench (2) fixed between the columns (1); a plurality of workpiece fixtures (7) are fixedly connected below the workbench (2); a workpiece (4) is connected below the workpiece fixtures (7); a support shaft (5) and a support shaft (6) are provided between the lower surface of the workbench (2) and the upper surface of the workpiece (4); the support shaft (5) is distributed at both ends of the workbench (2); the support shaft (6) is located in the middle of the workbench (2); the diameter of the support shaft (6) is smaller than the diameter of the support shaft (5); and a jack (3) is provided below the workpiece (4).

2. The fixing device for welding a bridge steel structure according to claim 1 is characterized in that: The jack (3) is located below the workpiece (4) and directly below the support shaft B (6).

3. The fixing device for welding a bridge steel structure according to claim 1 is characterized in that: The diameter of the support shaft B (6) differs from the diameter of the support shaft A (5) by 2-5 mm.