Flame preheating device for welding parts

Abstract

The utility model discloses a flame preheating device for welding parts, comprising a base, a roller arranged below the base, a first track seat vertically arranged at the top of the base, a pulley fixed to the top of the first track seat, a slider slidably connected to the first track seat, a second track seat slidably connected to the slider, a fixed pipe perpendicular to one end of the second track seat, and a plurality of flame spraying components evenly distributed on the fixed pipe, one end of the slider is slidably connected to the first track seat, and the other end is slidably connected to the second track seat, and the pulley is connected to the top of the slider through a traction rope; the device has good flexibility, can adapt to welding parts of different shapes and sizes and different positions by adjusting the relative positions between the slider and the first track seat and the second track seat, has strong adaptability, can control the intensity of the flame sprayed by the flame gun head by adjusting the fuel valve and the combustion-supporting agent valve, thereby controlling the preheating temperature and achieving different preheating effects, with high overall preheating efficiency and uniform preheating.

Description

Technical Field

[0001] The utility model belongs to the technical field of preheating welding parts, and in particular relates to a flame preheating device for welding parts. Background Art

[0002] Welding robots have been widely used in the heavy machinery industry because of their stable and reliable welding quality and high efficiency. For large welded parts, especially those with thicker thickness, preheating before welding is generally required. Taking 35 steel as an example, when the thickness is about 20mm, the preheating temperature before welding needs to be above 150℃, and when the thickness is about 60mm, the preheating temperature before welding needs to be above 250℃.

[0003] The traditional manual mobile flame preheating method can no longer meet the actual efficiency needs of welding robot welding production, especially for the preheating of long welds of medium and thick plates of high-quality carbon structural steel, hot-rolled steel, and medium and low alloy high-strength steel. In the prior art, flame heating (air fuel or acetylene fuel), resistance heating, electronic induction heating and other methods are generally used for preheating in the workshop. However, no matter what method is used, the preheating must be uniform. Unless there are special requirements, the preheating must penetrate the entire thickness of the weldment. In summary, there is an urgent need for a flame preheating device that is uniform in preheating, easy to use, and has high heating efficiency. Utility Model Content

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the utility model provides a flame preheating device for welding parts, comprising a base, a roller arranged below the base, a first track seat vertically arranged on the top of the base, a pulley fixed to the top of the first track seat, a slider slidably connected to the first track seat, a second track seat slidably connected to the slider, a fixed pipe perpendicular to one end of the second track seat, and a plurality of flame spraying components evenly distributed on the fixed pipe, wherein:

[0005] The flame spraying assembly includes a connecting pipe connected to the fixed pipe, an adjusting ring arranged at one end of the connecting pipe, and a flame gun head sleeved in the adjusting ring, the adjusting ring is provided with a knob, and the outer periphery of the flame gun head is provided with a fuel valve, an oxidant valve, and a rack, one end of the flame gun head is connected to a fuel pipe and an oxidant pipe, the fuel pipe is connected to the fuel valve, the oxidant pipe is connected to the oxidant valve, one end of the slider is slidably connected to the first track seat, and the other end is slidably connected to the second track seat, and the pulley is connected to the top of the slider through a traction rope.

[0006] As a specific implementation, in the above-mentioned flame preheating device for welded parts, the base is a cross-shaped frame, and the rollers are hinged at the bottom of each end of the cross-shaped frame through a bracket.

[0007] Furthermore, in the above-mentioned flame preheating device for welded parts, the first rail seat is perpendicular to the second rail seat.

[0008] As a specific implementation, in the above-mentioned flame preheating device for welded parts, the fuel valve is a propane valve, and the fuel pipe is a propane pipe.

[0009] As a specific implementation, in the above-mentioned flame preheating device for welded parts, the combustion-supporting agent valve is an oxygen valve, and the combustion-supporting agent pipe is an oxygen pipe.

[0010] As a specific implementation, in the above-mentioned flame preheating device for welded parts, the welded parts are medium and thick plates.

[0011] As a specific implementation, in the above-mentioned flame preheating device for welded parts, the number of the flame spraying assemblies is 4 to 12.

[0012] The flame preheating device for welding parts of the utility model has the following advantages and beneficial effects:

[0013] The device has a simple structure and is easy to assemble and disassemble. By arranging rollers under the base, it can be displaced more conveniently. It has good flexibility and can adapt to welding parts of different shapes, sizes and positions by adjusting the relative positions between the slider and the first track seat and the second track seat. It has strong adaptability. The intensity of the flame sprayed from the flame gun head can be controlled by adjusting the fuel valve and the combustion-supporting agent valve, so as to control the preheating temperature and achieve different preheating effects. The overall preheating efficiency is high and the preheating is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the utility model and constitute a part of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0015] Figure 1 It is a schematic structural diagram of a flame preheating device for welding parts of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of part Ⅰ.

[0017] Description of reference numerals:

[0018] 1-base, 2-roller, 3-first track seat, 4-pulley, 41-traction rope, 5-slider, 6-second track seat, 7-fixing pipe, 8-flame spraying assembly, 81-connecting pipe, 82-adjusting ring, 83-flame gun head, 84-knob, 85-fuel valve, 86-combustion-aid valve, 87-fuel pipe, 88-combustion-aid pipe, 89-rack. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.

[0020] like Figure 1 , Figure 2 As shown, the flame preheating device for welding parts of the utility model comprises a base 1, a roller 2 arranged below the base 1, a first track seat 3 vertically arranged at the top of the base 1, a pulley 4 fixed to the top of the first track seat 3, a slider 5 slidably connected to the first track seat 3, a second track seat 6 slidably connected to the slider 5, a fixed pipe 7 perpendicular to one end of the second track seat 6, and a plurality of flame spraying components 8 evenly distributed on the fixed pipe 7, wherein the flame spraying component 8 comprises a connecting pipe 81 connected to the fixed pipe 7, an adjusting ring 82 arranged at one end of the connecting pipe 81, a flame gun head 83 sleeved in the adjusting ring 82, a knob 84 is arranged on the adjusting ring 82, a fuel valve 85, an oxidant valve 86, and a rack 89 are arranged on the periphery of the flame gun head 83, a buckle matching the rack 89 is arranged at the bottom of the knob 84, and when adjustment is required When the flame gun head 83 is in the axial position, the knob 84 is rotated to make the buckle move away from the rack 89. At this time, the flame gun head 83 is in an active state. After being displaced to the specified position along the axial direction, the knob 84 is rotated again to make the buckle approach and buckle to the rack 89. At this time, the flame gun head 83 is in a locked state. One end of the flame gun head 83 is connected with a fuel pipe 87 and an oxidant pipe 88. The fuel pipe 87 is connected to the fuel valve 85, and the oxidant pipe 88 is connected to the oxidant valve 86. One end of the slider 5 is slidably connected to the first track seat 3, and the other end is slidably connected to the second track seat 6. The pulley 4 is connected to the top of the slider 5 through the traction rope 41. When the pulley 4 contracts the traction rope 41, the slider 5 slides upward along the first track seat 3. When the pulley 4 relaxes the traction rope 41, the slider 5 slides downward along the first track seat 3. The second track seat 6 can slide on the side wall of the slider 5 in the horizontal direction.

[0021] As a specific implementation, in the flame preheating device for welding parts of the utility model, the base 1 is a cross-shaped frame, and the bottom of each end of the cross-shaped frame is hinged with rollers 2 through brackets. Of course, the base 1 can also be other structures, and the specific structure of the base 1 needs to be set according to actual usage.

[0022] Furthermore, in the flame preheating device for welded parts of the utility model, the first rail seat 3 is perpendicular to the second rail seat 6 .

[0023] As a specific implementation, in the flame preheating device for welding parts of the utility model, the fuel valve 85 is a propane valve, the fuel pipe 87 is a propane pipe, the combustion aid valve 86 is an oxygen valve, and the combustion aid pipe 88 is an oxygen pipe. Of course, the device can also use other combustible gases as fuel and other combustion-supporting gases as combustion aids.

[0024] As a specific implementation, in the flame preheating device for welding parts of the utility model, the welding parts are medium-thick plates. Of course, the device can also weld other workpieces.

[0025] As a specific implementation, in the flame preheating device for welding parts of the present invention, the number of flame spraying assemblies 8 is 4 to 12, more specifically, the number of flame spraying assemblies 8 is 8. Of course, the specific number of flame spraying assemblies 8 should be set according to the size of the fixed tube 7 and the size of the workpiece to be welded.

[0026] The working principle of the flame preheating device for welding parts of the utility model is: first, the device is moved to the specified position by the roller 2, and then the flame spraying assembly 8 is adjusted to the predetermined position by adjusting the relative position between the slider 5 and the first track seat 3 and the second track seat 6. After that, the position of the flame spraying assembly 8 can be more finely adjusted by the adjusting ring 82. After the overall position is fixed, the fuel valve 85 and the combustion-aiding agent valve 86 are adjusted to the closed state, and then the fuel and the combustion-aiding agent are transported to the flame gun head 83 through the fuel pipe 87 and the combustion-aiding agent pipe 88. When preheating is required, the fuel valve 85 and the combustion-aiding agent valve 86 are adjusted to the open state, and the fuel is ignited to start preheating. During the preheating period, the intensity of the flame sprayed by the flame gun head 83 can be controlled by adjusting the fuel valve 85 and the combustion-aiding agent valve 86, so as to control the preheating temperature until the preheating of the welding part is completed.

[0027] In summary, compared with the prior art, the flame preheating device for welding parts of the utility model has the following advantages and

[0028] Beneficial effects:

[0029] The device has a simple structure and is easy to assemble and disassemble. By arranging a roller 2 under the base 1, it can be moved more conveniently and has good flexibility. The relative position between the slider 5 and the first track seat 3 and the second track seat 6 can be adjusted to adapt to welding parts of different shapes, sizes and positions. The adaptability is strong. The intensity of the flame sprayed by the flame gun head 83 can be controlled by adjusting the fuel valve 85 and the combustion-supporting agent valve 86, so as to control the preheating temperature and achieve different preheating effects. The overall preheating efficiency is high and the preheating is uniform.

[0030] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper", "lower" and the like in this article are all referenced to the placement state shown in the accompanying drawings.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features therein may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flame preheating device for welding parts, characterized in that: The flame preheating device for welding parts comprises a base, a roller arranged below the base, a first track seat arranged vertically on the top of the base, a pulley fixed to the top of the first track seat, a slider slidably connected to the first track seat, a second track seat slidably connected to the slider, a fixed pipe perpendicular to one end of the second track seat, and a plurality of flame spraying components evenly distributed on the fixed pipe, wherein: The flame spraying assembly includes a connecting pipe connected to the fixed pipe, an adjusting ring arranged at one end of the connecting pipe, and a flame gun head sleeved in the adjusting ring, the adjusting ring is provided with a knob, and the outer periphery of the flame gun head is provided with a fuel valve, an oxidant valve, and a rack, one end of the flame gun head is connected to a fuel pipe and an oxidant pipe, the fuel pipe is connected to the fuel valve, the oxidant pipe is connected to the oxidant valve, one end of the slider is slidably connected to the first track seat, and the other end is slidably connected to the second track seat, and the pulley is connected to the top of the slider through a traction rope.

2. The flame preheating device for welding parts according to claim 1, characterized in that: The base is a cross-shaped frame, and the rollers are hinged at the bottom of each end of the cross-shaped frame through brackets.

3. The flame preheating device for welding parts according to claim 1, characterized in that: The first rail seat is perpendicular to the second rail seat.

4. The flame preheating device for welding parts according to claim 1, characterized in that: The fuel valve is a propane valve, and the fuel pipe is a propane pipe.

5. The flame preheating device for welding parts according to claim 1, characterized in that: The combustion-supporting agent valve is an oxygen valve, and the combustion-supporting agent pipe is an oxygen pipe.

6. The flame preheating device for welding parts according to claim 1, characterized in that: The welded part is a medium-thick plate.

7. The flame preheating device for welding parts according to claim 1, characterized in that: The number of the flame spraying components is 4 to 12.

Images