Welded steel plate heating device

Abstract

The utility model provides a welding steel plate heating device which comprises a first heating set and a second heating set, the first heating set comprises a first mounting plate with a movable position, a first mounting groove is formed in the middle of the first mounting plate, two first sliding blocks are connected in the first mounting groove in a sliding mode, and the second heating set comprises a second mounting plate with a movable position. A second mounting groove is formed in the middle of the second mounting plate, two second sliding blocks are slidably connected into the second mounting groove, the first sliding block is fixedly connected with a first telescopic rod, the second sliding block is fixedly connected with a second telescopic rod, one end of the first telescopic rod is fixedly connected with a first heating structure, and one end of the second telescopic rod is fixedly connected with a second heating structure; the first heating structures are higher than the second heating structures, the two first heating structures are arranged on the two sides of the welding seam correspondingly, it is guaranteed that a welding part is evenly heated, the large welding temperature difference generated when the thickness of the welding part is too large or the width of the welding seam is too large is avoided, and therefore welding deformation caused by the welding temperature difference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding steel plate heating, in particular to a welding steel plate heating device. Background Art

[0002] The welding temperature difference is the cause of welding stress and welding deformation. The factors affecting the welding temperature difference mainly include the influence of welding heat input and the influence of the symmetry of the weld position on the welding temperature. Laser welding, high-energy electron beam welding and other technologies are used to reduce the influence range of the welding temperature field in the form of reducing welding heat input. However, the welding range of the above welding methods is narrow, and the temperature difference control effect depends on the thickness of the weld. The thicker the weld, the less obvious the effect of the above welding technology in controlling welding deformation. When welding thick steel plates greater than 100mm, due to the increase in the thickness of the steel plate, the weld temperature produces a large temperature difference in the thickness direction of the steel plate, making it difficult to achieve the same temperature rise and fall in the thickness direction of the weld during welding; and the same problem may occur when the weld width is too large. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a welding steel plate heating device, which can solve the problem of welding deformation caused by a large welding temperature difference when the thickness of the welded part is too large or the width of the weld is too large.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A welding steel plate heating device comprises a first heating group and a second heating group, the first heating group comprises a first mounting plate which can be moved, a first lifting mechanism is fixed under the first mounting plate, a first mounting groove is provided in the middle of the first mounting plate, two first sliders are slidably connected in the first mounting groove, the second heating group comprises a second mounting plate which can be moved, a second lifting mechanism is fixed under the second mounting plate, a second mounting groove is provided in the middle of the second mounting plate, two second sliders are slidably connected in the second mounting groove, a first telescopic rod is fixedly connected to the side of the first slider facing the second slider, a second telescopic rod is fixedly connected to the side of the first slider facing the first slider, one end of the first telescopic rod is fixedly connected to the first heating structure, one end of the second telescopic rod is fixedly connected to the second heating structure, and the first heating structure is higher than the second heating structure.

[0006] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0007] The first heating structure includes a first thermal resistor, a convex first thermally conductive insulator and a concave first mounting seat, the thermal resistor is located inside the first thermally conductive insulator, and the first thermally conductive insulator is embedded in the first mounting seat; the second heating structure includes a second thermal resistor, an inverted convex second thermally conductive insulator and a concave second mounting seat, the second thermal resistor is located inside the second thermally conductive insulator, and the second thermally conductive insulator is embedded in the second mounting seat.

[0008] The first thermally conductive insulator includes a first embedding portion and a first thermally conductive insulating portion, the width of the first embedding portion is smaller than that of the first thermally conductive insulating portion, the first embedding portion is embedded in the interior of the first mounting seat, and the first thermally conductive insulating portion covers and adheres to the lower surface of the first mounting seat; the second thermally conductive insulator includes a second embedding portion and a second thermally conductive insulating portion, the width of the second embedding portion is smaller than that of the second thermally conductive insulating portion, the second embedding portion is embedded in the interior of the second mounting seat, and the second thermally conductive insulating portion covers and adheres to the upper surface of the second mounting seat.

[0009] A first heat-blocking sheet is fixed between the first telescopic rod and the first heating structure, and a second heat-blocking sheet is fixed between the second telescopic rod and the second heating structure.

[0010] The first lifting mechanism includes first nut rods fixed at the four corners of the first mounting plate, the first nut rod is internally threadedly connected to a first lead screw, and the lower end of the first lead screw is fixed to a first support plate; the second lifting mechanism includes second nut rods fixed at the four corners of the second mounting plate, the second nut rod is internally threadedly connected to a second lead screw, and the lower end of the second lead screw is fixed to a second support plate.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects: by respectively arranging the first heating structure and the second heating structure on the two sides of the weld, and the two first heating structures are respectively arranged on both sides of the weld, it is ensured that the weld is heated evenly, avoiding a large welding temperature difference when the weld thickness is too large or the weld width is too large, thereby avoiding welding deformation caused by the welding temperature difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the specific implementation of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the second heating group of the utility model.

[0014] Figure 3 It is a side view of the first heating structure of the utility model.

[0015] Figure 4It is a side view of the second heating structure of the utility model. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation scheme of the present utility model is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent elements with the same or similar functions. However, it should be understood that the accompanying drawings are only used for illustrative purposes and cannot be understood as limitations on the present utility model. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted, and the positional relationship described in the accompanying drawings is only used for illustrative purposes and cannot be understood as limitations on the present utility model.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] The utility model provides a welding steel plate heating device, comprising a first heating group and a second heating group, the first heating group comprising a first mounting plate 81 which can be moved, a first lifting mechanism 51 is fixed below the first mounting plate 81, a first mounting groove 71 is provided in the middle of the first mounting plate 81, two first sliders 61 are slidably connected in the first mounting groove 71, the second heating group comprises a second mounting plate 82 which can be moved, a second lifting mechanism 52 is fixed below the second mounting plate 82, a second mounting groove 72 is provided in the middle of the second mounting plate 82, two second sliders 62 are slidably connected in the second mounting groove 72, the first slider 61 is fixedly connected to the side of the second slider 62 with a first telescopic rod 41, the second slider 62 is fixedly connected to the side of the first slider 61 with a second telescopic rod 42, one end of the first telescopic rod 41 is fixedly connected to the first heating structure 1, one end of the second telescopic rod 42 is fixedly connected to the second heating structure 2, and the first heating structure 1 is higher than the second heating structure 2.

[0019] like Figure 1 As shown, by adjusting the height of the first lifting mechanism 51 and the second lifting mechanism 52, it is ensured that the weldment 9 is clamped between the first heating structure 1 and the second heating structure 2, by adjusting the two first sliders 61, it is ensured that the two first heating structures 1 are respectively located on both sides of the weld, and by adjusting the first telescopic rod 41 and the second telescopic rod 42, it is ensured that the first heating structure 1 and the second heating structure cover the surface of the weld 9.

[0020] In this embodiment, the heating temperature of the welding area of ​​the welding member 9 is maintained between 600°C and 700°C.

[0021] In this embodiment, the first telescopic rod 41 and the second telescopic rod 42 are both formed by sleeve-connecting two smooth rods with different diameters.

[0022] like Figure 1-Figure 4 As shown, the first heating structure 1 includes a first thermal resistor 11, a convex first thermally conductive insulator 12 and an inverted concave first mounting seat 13, the thermal resistor 11 is located inside the first thermally conductive insulator 12, and the first thermally conductive insulator 12 is embedded in the first mounting seat 13; the second heating structure 2 includes a second thermal resistor 21, an inverted convex second thermally conductive insulator 22 and a concave second mounting seat 23, the second thermal resistor 21 is located inside the second thermally conductive insulator 22, and the second thermally conductive insulator 22 is embedded in the second mounting seat 23.

[0023] The first thermally conductive insulator 12 includes a first embedding portion 121 and a first thermally conductive insulating portion 122. The width of the first embedding portion 121 is smaller than that of the first thermally conductive insulating portion 122. The first embedding portion 121 is embedded in the interior of the first mounting seat 13, and the first thermally conductive insulating portion 122 covers and fits the lower surface of the first mounting seat 13; the second thermally conductive insulator 22 includes a second embedding portion 221 and a second thermally conductive insulating portion 222. The width of the second embedding portion 221 is smaller than that of the second thermally conductive insulating portion 222. The second embedding portion 221 is embedded in the interior of the second mounting seat 23, and the second thermally conductive insulating portion 222 covers and fits the upper surface of the second mounting seat 23.

[0024] like Figure 1 As shown, the first heat-conducting insulating portion 122 is attached to the upper surface of the welding member 9 , and the second heat-conducting insulating portion 222 is attached to the lower surface of the welding member 9 .

[0025] A first heat-blocking sheet 31 is fixed between the first telescopic rod 41 and the first heating structure 1 , and a second heat-blocking sheet 32 ​​is fixed between the second telescopic rod 42 and the second heating structure 2 .

[0026] The first lifting mechanism 51 includes a first nut rod 511 fixed at the four corners of the first mounting plate 81, the first nut rod 511 is threadedly connected to the first lead screw 512, and the lower end of the first lead screw 512 is fixed to the first support plate 513; the second lifting mechanism 52 includes a second nut rod 521 fixed at the four corners of the second mounting plate 82, the second nut rod 521 is threadedly connected to the second lead screw 522, and the lower end of the second lead screw 522 is fixed to the second support plate 523.

[0027] When the utility model is used, the welding part 9 needs to be installed to a suitable position first, and then the pre-welding heating is started. During welding, the temperature of the weld and the molten pool that have been welded is maintained, and the heat-affected zone affected by the welding temperature field and the area where no welding is performed are continuously heated; after welding, when the weld is completely completed, heating is continued for a period of time to eliminate welding stress and the temperature slowly drops.

[0028] According to the description and drawings of the utility model, a person skilled in the art can easily manufacture or use a welding steel plate heating device of the utility model, and can produce the positive effects recorded in the utility model.

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the mechanism or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

[0031] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and affect variations to the disclosed embodiments by studying the drawings, disclosure, and appended claims. In addition, in the claims and the specification, words such as "comprises", "comprising", etc. do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0032] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A welding steel plate heating device, characterized in that: The invention comprises a first heating group and a second heating group, wherein the first heating group comprises a first mounting plate (81) which can be moved, a first lifting mechanism (51) being fixed below the first mounting plate (81), a first mounting groove (71) being provided in the middle of the first mounting plate (81), two first sliding blocks (61) being slidably connected in the first mounting groove (71), and the second heating group comprises a second mounting plate (82) which can be moved, a second lifting mechanism (52) being fixed below the second mounting plate (82), a second mounting groove (72) being provided in the middle of the second mounting plate (82), two second sliding blocks (62) being slidably connected in the second mounting groove (72), a first telescopic rod (41) being fixedly connected to the side of the first sliding block (61) facing the second sliding block (62), a second telescopic rod (42) being fixedly connected to the side of the second sliding block (61), a first heating structure (1) being fixedly connected to one end of the first telescopic rod (41), a second heating structure (2) being fixedly connected to one end of the second telescopic rod (42), and the first heating structure (1) being higher than the second heating structure (2).

2. A welding steel plate heating device as claimed in claim 1, characterized in that: The first heating structure (1) comprises a first thermal resistor (11), a convex first thermally conductive insulator (12), and a concave first mounting seat (13), wherein the thermal resistor (11) is located inside the first thermally conductive insulator (12), and the first thermally conductive insulator (12) is engaged with the first mounting seat (13); The second heating structure (2) comprises a second thermal resistor (21), an inverted convex second thermal insulator (22), and a concave second mounting seat (23); the second thermal resistor (21) is located inside the second thermal insulator (22), and the second thermal insulator (22) is engaged with the second mounting seat (23).

3. A welding steel plate heating device as claimed in claim 2, characterized in that: The first heat-conducting insulator (12) comprises a first embedding portion (121) and a first heat-conducting insulating portion (122); the width of the first embedding portion (121) is smaller than that of the first heat-conducting insulating portion (122); the first embedding portion (121) is embedded in the interior of the first mounting seat (13); and the first heat-conducting insulating portion (122) covers and adheres to the lower surface of the first mounting seat (13); the second heat-conducting insulator (22) comprises a second embedding portion (221) and a second heat-conducting insulating portion (222); the width of the second embedding portion (221) is smaller than that of the second heat-conducting insulating portion (222); the second embedding portion (221) is embedded in the interior of the second mounting seat (23); and the second heat-conducting insulating portion (222) covers and adheres to the upper surface of the second mounting seat (23).

4. A welding steel plate heating device as claimed in claim 1, characterized in that: A first heat-blocking plate (31) is fixed between the first telescopic rod (41) and the first heating structure (1), and a second heat-blocking plate (32) is fixed between the second telescopic rod (42) and the second heating structure (2).

5. A welding steel plate heating device as claimed in claim 1, characterized in that: The first lifting mechanism (51) comprises first nut rods (511) respectively fixed at four corners of the first mounting plate (81), the first nut rod (511) being internally threadedly connected to a first lead screw (512), and a first support plate (513) being fixed at the lower end of the first lead screw (512); the second lifting mechanism (52) comprises second nut rods (521) respectively fixed at four corners of the second mounting plate (82), the second nut rod (521) being internally threadedly connected to a second lead screw (522), and a second support plate (523) being fixed at the lower end of the second lead screw (522).

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