Welding tool
By designing a welding tooling including an angle bracket assembly and a cylinder, the problems of stress and deformation in long weld welding are solved, the welding quality and stability are improved, and the difficulty of operation is reduced.
Patent Information
- Application Number
- CN202421153888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-24
AI Technical Summary
Welding stress and deformation will occur during the welding of long welds. The existing technology is difficult to effectively solve these problems, and there is a lack of matching tooling for long welds.
A welding tooling is designed, including four sets of angle bracket components and cylinders. The pressure of the cylinders causes the angle bracket components to move away from each other, against the inner corners of the storage tank or the inner corners of the cross plate, providing reaction force to resist the welding process. Stress and deformation.
It effectively reduces stress and deformation during long welding seam welding, improves welding quality and stability, and reduces technical requirements for operators.
Smart Images
Figure CN222370775U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical engineering, and in particular relates to a welding tool. Background Art
[0002] The welding of long welds on the cross plates of large tanks will cause welding stress and deformation. The following are the stress and deformation that may occur when welding long welds:
[0003] Thermal stress caused by temperature gradient: During the welding process of long welds, the weld area is heated by a high-temperature heat source, while the surrounding area remains at a relatively low temperature. This temperature gradient causes thermal expansion in the weld area, while the surrounding cooled area remains relatively unchanged, thus generating thermal stress.
[0004] Residual stress: After welding, residual stress will be generated inside the weld due to the uneven heat effect on the weld. These residual stresses may cause plastic deformation in the weld area or cracks during use.
[0005] Shrinkage deformation: During the long weld welding process, the materials on both sides of the weld are affected by the heat affected zone, and thermal expansion and contraction will occur. The material shrinkage caused by this thermal effect will cause deformation in the weld area, especially when welding high-temperature materials or large structures.
[0006] Deformation accumulation: During the welding process of long welds, the welding process will cause certain deformation. If the weld length is long, the deformation may accumulate, resulting in greater deformation of the entire weld area.
[0007] In order to reduce the stress and deformation caused by long welds, we often take some measures, including: 1. Select appropriate welding process and parameters, 2. Use preheating and post-heat treatment technology, 3. Adopt appropriate welding sequence, 4. Use appropriate welding deformation compensation technology, etc., to reduce stress and deformation and improve welding quality and stability.
[0008] However, the above methods all require welding technicians to have profound professional knowledge and need the cooperation of skilled welding workers, which places high demands on operators. In addition, there is currently no tooling for long welds, so the development of a tooling for long welds has great market prospects. Utility Model Content
[0009] The utility model aims to solve the problems of the prior art and provides a welding tool.
[0010] In order to solve the technical problem, the technical solution of the utility model is: a welding tool, the welding tool includes four groups, each group of welding tool includes an angle bracket assembly and a cylinder, the angle bracket assembly is two groups, the two axial ends of the cylinder are respectively connected to the two groups of angle bracket assemblies, the two groups of angle bracket assemblies are centrally symmetrically arranged relative to the cylinder, and the axis of the cylinder is respectively perpendicular to the length direction of the two groups of angle bracket assemblies;
[0011] The angle bracket assembly includes an angle steel plate, a rib plate and a cylinder mounting plate. The length dimension of the angle steel plate is less than or equal to the length dimension of the storage tank. There are two rib plates. Both ends of the angle steel plate in the length direction are connected to the rib plates respectively. A cylinder mounting plate is provided on the side of the angle steel plate close to the cylinder. The cylinder mounting plate is connected to the cylinder. The side of the angle steel plate away from the cylinder is adapted to the inner corner of the storage tank or the cross plate.
[0012] The cross plate is installed inside the storage tank, and the four sides of the cross plate are respectively perpendicular to the four inner walls of the storage tank. The cross plate divides the storage tank into four cavities. Four sets of welding tools are respectively installed in the four cavities. When the cylinder is started, the angle steel plates of one set of corner bracket assemblies of the welding tooling are pressed against the inner corners of the storage tank, and the angle steel plates of another set of corner bracket assemblies of the welding tooling are pressed against the corresponding inner corners of the cross plate.
[0013] Preferably, the angle steel plate is formed by welding two metal plates with a smooth transition and a 90° angle, and the side length of the metal plate is ≥ 1 / 4 of the side length of the storage tank.
[0014] Preferably, a plurality of through holes are formed on the angle steel plate.
[0015] Preferably, a plurality of reinforcing ribs are provided between the two metal plates of the angle steel plate.
[0016] Preferably, the rib plate is triangular in shape, and a handle is provided on the outer side of the rib plate.
[0017] Preferably, there are multiple cylinders, and the multiple cylinders are arranged in parallel between the two groups of corner bracket assemblies.
[0018] Compared with the prior art, the advantages of the utility model are:
[0019] (1) The utility model provides a welding tool, including an angle bracket assembly and a cylinder, wherein two sets of angle bracket assemblies are arranged symmetrically with respect to the center of the cylinder. After the cylinder is started, the two sets of angle bracket assemblies can be moved away from each other to press against the inner corner of the storage tank or the inner corner of the cross plate. The inner corner of the storage tank or the inner corner of the cross plate gives a reaction force, and the cylinder continuously outputs an opposing force outward, which can resist the stress and deformation generated during the welding process;
[0020] (2) The cylinder of the welding fixture of the utility model is activated so that the angle steel plates of one set of angle bracket assemblies of the welding fixture are pressed against the inner corners of the storage tank, and the angle steel plates of another set of angle bracket assemblies of the welding fixture are pressed against the corresponding inner corners of the cross plate. The cylinder is used as a clamp and a fixing device to fix the cross plate in the storage tank to keep it in the middle position, and a pressure compensation method is used to keep the fixing force stable, which can reduce the stress and deformation during the welding process of long welds and improve the welding quality and stability;
[0021] (3) The welding tool and welding assembly of the utility model have a simple structure and are easy to use. They do not require the cooperation of skilled welding workers and have low requirements on operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 , a schematic diagram of the side structure of a welding tool in working state of the utility model;
[0023] Figure 2 , a schematic diagram of the main structure of a welding tool in working state of the utility model;
[0024] Figure 3 , a schematic diagram of the side structure of a welding tool of the utility model;
[0025] Figure 4 , a schematic diagram of the main structure of a welding tool of the utility model;
[0026] Figure 5 , a side structural schematic diagram of the corner bracket assembly of the utility model.
[0027] Description of reference numerals:
[0028] 1. Storage tank, 2. Cross plate, 3. Welding tooling;
[0029] 31. Angle bracket assembly, 32. Cylinder;
[0030] 311, angle steel plate, 312, rib plate, 313, cylinder mounting plate, 314, reinforced rib plate;
[0031] 3111, through hole. DETAILED DESCRIPTION
[0032] The following describes the specific implementation of the utility model in conjunction with embodiments:
[0033] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0034] Example 1
[0035] like Figures 1 to 5 As shown, the utility model discloses a welding tool, the welding tool 3 includes four groups, each group of welding tool 3 includes an angle bracket assembly 31 and a cylinder 32, the angle bracket assembly 31 is divided into two groups, the two axial ends of the cylinder 32 are respectively connected to the two groups of angle bracket assemblies 31, the two groups of angle bracket assemblies 31 are centrally symmetrically arranged relative to the cylinder 32, and the axis of the cylinder 32 is respectively perpendicular to the length direction of the two groups of angle bracket assemblies 31;
[0036] The angle bracket assembly 31 includes an angle steel plate 311, a rib plate 312 and a cylinder mounting plate 313. The length dimension of the angle steel plate 311 is less than or equal to the length dimension of the storage tank 1. There are two rib plates 312. The two ends of the angle steel plate 311 in the length direction are respectively connected to the rib plates 312. A cylinder mounting plate 313 is provided on the side of the angle steel plate 311 close to the cylinder 32. The cylinder mounting plate 313 is connected to the cylinder 32. The side of the angle steel plate 311 away from the cylinder 32 is adapted to the inner angle of the storage tank 1 or the cross plate 2.
[0037] The cross plate 2 is installed inside the storage tank 1, and the four sides of the cross plate 2 are respectively perpendicular to the four inner walls of the storage tank 1. The cross plate 2 divides the storage tank 1 into four cavities. Four groups of welding tools 3 are respectively installed in the four cavities. The cylinder 32 is started to make the angle steel plate 311 of one group of corner bracket assemblies 31 of the welding tool 3 press against the inner corner of the storage tank 1, and make the angle steel plate 311 of another group of corner bracket assemblies 31 of the welding tool 3 press against the corresponding inner corner of the cross plate 2.
[0038] Example 2
[0039] like Figures 3-5 As shown, preferably, the angle steel plate 311 is welded by two metal plates with smooth transition and 90°, and the side length of the metal plate is ≥ 1 / 4 of the side length of the storage tank 1; it can fully contact the inner wall surface of the storage tank 1 and have sufficient supporting area.
[0040] like Figure 5 As shown, preferably, a plurality of through holes 3111 are opened on the angle steel plate 311, so that the weight of the tooling can be reduced as much as possible while ensuring the strength of the tooling, so as to facilitate operation.
[0041] like Figure 5As shown, preferably, a plurality of reinforcing ribs 314 are provided between the two metal plates of the angle steel plate 311 ; in order to improve the strength of the angle bracket assembly 31 , a plurality of reinforcing ribs 314 are further provided.
[0042] Example 3
[0043] like Figures 3-5 As shown, preferably, the rib plate 312 is triangular, and a handle is provided on the outer side of the rib plate 312 .
[0044] The angle bracket assembly 31 is formed by welding an angle steel plate 311 , a rib plate 312 , a cylinder mounting plate 313 and a reinforcing rib plate 314 .
[0045] like Figure 3 As shown, preferably, there are multiple cylinders 32, and the multiple cylinders 32 are arranged in parallel between the two groups of corner bracket assemblies 31.
[0046] The working principle of the utility model is as follows:
[0047] like Figures 1 to 5 As shown, the utility model discloses a welding tool, wherein the welding tool 3 includes four groups, each group of the welding tool 3 includes an angle bracket assembly 31 and a cylinder 32, and the cylinder 32 is activated to make the angle steel plate 311 of one group of the angle bracket assembly 31 of the welding tool 3 press against the inner corner of the storage tank 1, and make the angle steel plate 311 of another group of the angle bracket assembly 31 of the welding tool 3 press against the corresponding inner corner of the cross plate 2;
[0048] During welding, the cross plate 2 must be located at the center of the tank 1, that is, the distances between the four vertical sides of the cross plate 2 and the corresponding four inner walls of the tank 1 must be equal, and the relative position must always be kept unchanged during the welding process, and the deformation stress can be resisted when welding deformation occurs, so as to ensure the welding quality and the structural size requirements of the tank 1. For this purpose, four sets of welding fixtures 3 are required to work simultaneously. The length of the welding fixtures 3 is similar to that of the tank 1, and can fully contact and support the tank 1 in the length direction. Each set of welding fixtures 3 is composed of two sets of angle bracket assemblies 31 and a cylinder 32.
[0049] During operation, the cylinders 32 of the four welding fixtures 3 move simultaneously. After the cylinder rods are extended, one of the two corner bracket assemblies 31 of each welding fixture 3 pushes against the corner of the cross plate 2, and the other pushes against the corner of the storage tank 1. As the cylinder rods continue to extend, the ejection force will no longer increase after reaching a certain level. This is because the air pressure of the air source is limited to a certain pressure value (the pressure value is set in the prior art), and the system air pressure will not be greater than the set value, and the value can be adjusted as needed. The maximum ejection distance of the cylinder is limited to ensure that the cross plate 2 is pushed to the center of the storage tank 1 after the cylinder rods are fully ejected, and remains in this position. Of course, a certain position error will be allowed. At this time, the cylinder 32 still outputs the force of pushing outward due to the existence of air pressure. This force will resist the stress and deformation generated during the welding process, keep the relative position of the cross plate 2 and the storage tank 1 fixed, thereby ensuring the welding quality.
[0050] The utility model provides a welding tool, including an angle bracket assembly and a cylinder. Two groups of angle bracket assemblies are arranged in a centrally symmetrical manner relative to the cylinder. After the cylinder is started, the two groups of angle bracket assemblies can be moved away from each other to press against the inner angle of a storage tank or the inner angle of a cross plate. The inner angle of the storage tank or the inner angle of the cross plate gives a reaction force, and the cylinder continuously outputs an opposing force outward, which can resist the stress and deformation generated during the welding process.
[0051] The cylinder of the welding tool of the utility model is started so that the angle steel plates of one group of angle bracket assemblies of the welding tool are pressed against the inner corners of the storage tank, and the angle steel plates of another group of angle bracket assemblies of the welding tool are pressed against the corresponding inner corners of the cross plate. The cylinder is used as a clamp and a fixing device to fix the cross plate in the storage tank to keep it in the middle position, and a pressure compensation method is used to keep the fixing force stable, which can reduce stress and deformation during the welding process of long welds and improve welding quality and stability.
[0052] The welding tool and welding assembly of the utility model have simple structures and are easy to use, do not require the cooperation of skilled welding workers, and have low requirements on operators.
[0053] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.
[0054] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.
Claims
1. A welding tool, characterized in that: The welding tooling (3) comprises four groups, each group of the welding tooling (3) comprises an angle bracket assembly (31) and a cylinder (32), the angle bracket assembly (31) comprises two groups, the two axial ends of the cylinder (32) are respectively connected to the two groups of angle bracket assemblies (31), the two groups of angle bracket assemblies (31) are centrally symmetrically arranged relative to the cylinder (32), and the axis of the cylinder (32) is respectively perpendicular to the length direction of the two groups of angle bracket assemblies (31); The angle bracket assembly (31) comprises an angle steel plate (311), a rib plate (312) and a cylinder mounting plate (313); the length dimension of the angle steel plate (311) is less than or equal to the length dimension of the storage tank (1); there are two rib plates (312); both ends of the angle steel plate (311) in the length direction are respectively connected to the rib plates (312); a cylinder mounting plate (313) is provided on a side of the angle steel plate (311) close to the cylinder (32); the cylinder mounting plate (313) is connected to the cylinder (32); and a side of the angle steel plate (311) away from the cylinder (32) is adapted to the inner corner of the storage tank (1) or the cross plate (2); The cross plate (2) is installed inside the storage tank (1), and the four sides of the cross plate (2) are respectively perpendicular to the four inner walls of the storage tank (1). The cross plate (2) divides the storage tank (1) into four cavities. The four sets of welding fixtures (3) are respectively installed in the four cavities. The cylinder (32) is started so that the angle steel plates (311) of one set of angle bracket assemblies (31) of the welding fixture (3) are pressed against the inner corners of the storage tank (1), and the angle steel plates (311) of another set of angle bracket assemblies (31) of the welding fixture (3) are pressed against the corresponding inner corners of the cross plate (2).
2. A welding tool according to claim 1, characterized in that: The angle steel plate (311) is formed by welding two metal plates with a smooth transition and a 90° angle, and the side length of the metal plate is ≥ 1 / 4 of the side length of the storage tank (1).
3. A welding tool according to claim 2, characterized in that: The angle steel plate (311) is provided with a plurality of through holes (3111).
4. A welding tool according to claim 2, characterized in that: A plurality of reinforcing rib plates (314) are arranged between the two metal plates of the angle steel plate (311).
5. A welding tool according to claim 1, characterized in that: The rib plate (312) is triangular in shape, and a handle is provided on the outside of the rib plate (312).
6. A welding tool according to claim 1, characterized in that: There are a plurality of cylinders (32), and the plurality of cylinders (32) are arranged in parallel between two groups of corner bracket assemblies (31).