Heating device for welding seam area of part

Abstract

The embodiment of the utility model provides a part welding seam area heating device, and relates to the technical field of heating devices, the part welding seam area heating device comprises a gas bottle, a gas inlet pipe and a gas outlet pipe, the fire spraying structure comprises a supporting piece and at least two fire spraying heads arranged on the supporting piece, the gas bottle is communicated with the fire spraying heads so as to convey combustible gas to the fire spraying heads, the supporting piece is provided with a circulation pipeline, the circulation pipeline is used for conveying combustion-supporting gas to the fire spraying heads, and the fire spraying heads are used for igniting the combustible gas and the combustion-supporting gas; the driving assembly is used for driving the parts to move so that the weld joint areas of the parts can sequentially correspond to the fire-jet heads, and compared with manual movement of the fire-jet heads, the driving assembly can drive the parts to move at a constant speed, so that heat energy jetted by the at least two fire-jet heads continuously and uniformly acts on the weld joint areas of the parts, operation is convenient, flame distribution is optimized, and the welding efficiency is improved. The situation that local heating is overdue or insufficient is effectively avoided, and the welding quality is improved.

Description

Technical Field

[0001] This application relates to the field of heating device technology, and more particularly to a heating device for the weld area of ​​a part. Background Technology

[0002] The wind turbine tower, also known as the wind power tower, is a crucial supporting structure for wind turbine generators. It is constructed from multiple steel plates and structural components welded together, and the quality of this welding directly affects the stability, safety, and lifespan of the entire unit. Therefore, to ensure welding quality, the weld seams are typically heated and held at that temperature for a period after welding to eliminate residual stress and improve the toughness of the weld joint.

[0003] In related technologies, for large equipment such as wind turbine towers, gas cylinders containing flammable gas are connected to a flame nozzle through a gas pipeline. The flame nozzle is then manually held and aimed at the weld seam after welding to heat it.

[0004] However, manually holding a portable torch to heat the weld is inconvenient and can easily cause local overheating or underheating, affecting the welding quality. Utility Model Content

[0005] This application provides a heating device for the weld area of ​​a part, which overcomes the problems of the prior art where manual hand-held moving flame head is used to heat the weld area, which is inconvenient to operate and easily causes local overheating or underheating, affecting the welding quality.

[0006] This application provides a heating device for the weld area of ​​a part, comprising: a gas cylinder containing a combustible gas; a flame propulsion structure including a support member and at least two flame heads disposed on the support member, the gas cylinder being connected to the flame heads to supply the combustible gas to the flame heads, the support member having a flow pipe for supplying combustion-supporting gas to the flame heads, the flame heads being used to ignite the combustible gas and the combustion-supporting gas; and a drive assembly for driving the part to move so that the weld areas of the part sequentially face the flame heads.

[0007] In one possible implementation, the flame-throwing structure further includes a connecting pipe that communicates with the outlet end of the gas cylinder. The extending direction of the connecting pipe is consistent with the extending direction of the weld of the part. The flame-throwing head is connected to the side wall of the connecting pipe and is spaced apart along the extending direction of the connecting pipe.

[0008] In one possible implementation, the burner head includes a combustion chamber and a nozzle, the combustion chamber being in communication with the nozzle, the combustion chamber being used to ignite the combustible gas and the combustion-supporting gas to form a flame, the nozzle being used to spray the flame, and the nozzles of the plurality of burners are all oriented toward the part.

[0009] In one possible implementation, the connecting pipe is an arc-shaped pipe, and the flame heads are distributed at equal angles along the extension direction of the connecting pipe.

[0010] In one possible implementation, the support includes a combustion-supporting pipe and a base, the combustion-supporting pipe extending vertically and having its top end connected to the flame head, and its bottom end connected to the base, the base being used to support the flame head.

[0011] In one possible implementation, the drive assembly includes a drive motor, a support base, and at least two rollers disposed at both ends of the support base. The rollers are used to support the part, and the drive motor is used to drive the rollers to rotate, thereby causing the part to rotate.

[0012] In one possible implementation, a control component is also included, comprising a control valve and a controller. The burner head is connected to the gas cylinder via a gas pipeline. The control valve is disposed on the gas pipeline and is used to control the opening and closing of the gas pipeline. The controller is signal-connected to the control valve and has a preset timing function. The controller is used to operate the control valve to close according to the preset time, so as to control the flame heating time of the burner head by controlling the opening and closing of the gas pipeline.

[0013] In one possible implementation, the controller is a PLC controller, which includes a timing module. The control valve is signal-connected to the timing module. The timing module is used to preset a timed shutdown time based on the heating intensity of the part. The control valve is used to respond to the preset timed shutdown signal output by the timing module to achieve timed shutdown.

[0014] In one possible implementation, the control valve is an electromagnetic shut-off valve.

[0015] In one possible implementation, the drive component is electrically connected to the controller, which is used to synchronously control the drive component to shut down via the preset timing function.

[0016] The weld area heating device for a component provided in this application embodiment uses at least two burner heads to ignite combustible gas and combustion-supporting gas to form a flame. The component can move under the drive of a drive assembly. The rotating component maintains relative movement with the fixed burner heads, so that the weld area of ​​the component can be sequentially aligned with the burner heads. Compared with manual heating by moving the burner heads, the drive assembly can drive the component to move at a uniform speed, so that the flames sprayed by at least two burner heads can continuously and evenly act on the weld area of ​​the component. It is easy to operate, optimizes the flame distribution, effectively avoids local overheating or underheating, and improves welding quality. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 A schematic diagram of the structure of the heating device for the weld area of ​​the part provided in this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 100-Gas Cylinder;

[0021] 200 - Flame-blowing structure; 210 - Support component; 211 - Combustion-supporting pipe; 212 - Base; 220 - Flame head; 230 - Connecting pipe;

[0022] 300-parts;

[0023] 400 - Control component; 410 - Control valve; 420 - Controller;

[0024] 500 - Drive assembly; 510 - Drive motor; 520 - Support base; 530 - Roller;

[0025] 600 - Gas transmission pipeline.

[0026] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0029] The terms "first," "second," "third," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0030] Secondly, it should be noted that in the description of this application, the terms "inner", "outer", "first direction", "second direction", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0031] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] As shown in the background art, in related technologies, for large equipment such as wind turbine towers, a gas cylinder containing flammable gas is connected to a flame nozzle through a gas pipeline. The flame nozzle is manually held and aimed at the weld seam after welding to heat it.

[0033] However, manually holding a portable torch to heat the weld is inconvenient and can easily cause local overheating or underheating, affecting the welding quality.

[0034] To address the aforementioned technical problems, this application provides a heating device for the weld area of ​​a part, comprising: a gas cylinder containing combustible gas; a flame propulsion structure including a support member and at least two flame heads mounted on the support member, wherein the gas cylinder is connected to the flame heads to supply combustible gas to the flame heads, the support member has a flow pipe for supplying combustion-supporting gas to the flame heads, and the flame heads are used to ignite the combustible gas and the combustion-supporting gas; and a drive assembly for driving the part to move, wherein the rotating part maintains relative motion with the fixed flame heads so that the weld area of ​​the part sequentially faces the flame heads. Compared to manually moving the flame heads for heating, the drive assembly can drive the part to move at a uniform speed, thereby ensuring that the heat energy ejected by the at least two flame heads continuously and uniformly acts on the weld area of ​​the part. This method is convenient to operate, optimizes flame distribution, effectively avoids local overheating or underheating, and improves welding quality.

[0035] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0036] This application provides a heating device for the weld area of ​​a part, referring to... Figure 1 As shown, it includes:

[0037] Gas cylinder 100 contains flammable gas.

[0038] The flame-throwing structure 200 includes a support member 210 and at least two flame heads 220 disposed on the support member 210. The gas cylinder 100 is connected to the flame head 220 to supply combustible gas to the flame head 220. The support member 210 has a flow channel for supplying combustion-supporting gas to the flame head 220. The flame head 220 is used to ignite the combustible gas and the combustion-supporting gas.

[0039] The drive assembly 500 is used to drive the part 300 to move so that the weld area of ​​the part 300 is aligned with the flame head 220 in sequence.

[0040] Understandably, welding of some high-strength steels requires high precision. During welding, hydrogen may seep into the weld area. Direct and rapid cooling can lead to hydrogen retention, and residual welding stress cannot be eliminated, resulting in delayed cracking in the weld area. Therefore, after welding, heat treatment is still necessary at the weld location to slow down the cooling rate of the weld area, eliminate residual welding stress, improve the toughness of the welded joint, and prevent weld detachment. For example, wind turbine towers are composed of multiple steel rings, which need to be welded together to form the tower. After welding, the weld area needs to be heated to slow down the cooling rate of the wind turbine tower's weld area, achieving a heat preservation effect and maintaining this for a period of time to ensure that hydrogen can fully escape and residual stress is eliminated.

[0041] For wind turbine towers, especially thick-walled and large-diameter pipes, the weld area is heated by manually holding a torch. This involves manually moving the torch so that it can surround the weld area to fully heat the weld and continue to surround the weld for a period of time to completely eliminate residual welding stress.

[0042] However, manually holding a portable torch to heat the weld is inconvenient and can easily cause local overheating or underheating, affecting the welding quality.

[0043] Therefore, this application provides a heating device for the weld area of ​​a part, specifically, in conjunction with Figure 1 As shown, by setting at least two burner heads 220, combustible gas and combustion-supporting gas are ignited by the burner heads 220 to form a flame. The part 300 can move under the driving action of the drive component 500. The rotating part 300 and the fixed burner head 220 maintain relative movement, so that the weld area of ​​the part 300 can be sequentially aligned with the burner head 220. Compared with manual heating by moving the burner head, the drive component 500 can drive the part 300 to move at a uniform speed. Thus, the flames sprayed by at least two burner heads 220 can continuously and uniformly act on the weld area of ​​the part 300. The operation is convenient, and the flame distribution is optimized, effectively avoiding local overheating or underheating, and improving the welding quality.

[0044] It should be noted that, depending on the actual situation on site, the rotational speed of part 300 can be adjusted by adjusting the rotational speed of drive component 500, thereby avoiding the part 300 rotating too fast, which would prevent at least two flame heads 220 from effectively heating the weld area of ​​part 300.

[0045] In one possible implementation, combining Figure 1As shown, the flame-spraying structure 200 also includes a connecting pipe 230, which is connected to the outlet end of the gas cylinder 100. The extension direction of the connecting pipe 230 is consistent with the extension direction of the weld of the part 300. The flame-spraying head 220 is connected to the side wall of the connecting pipe 230 and is spaced along the extension direction of the connecting pipe 230.

[0046] Specifically, in combination Figure 1 As shown, the extension direction of the connecting pipe 230 is consistent with the extension direction of the weld of the part 300, and at least two flame heads 220 are connected to the side wall of the connecting pipe 230 facing the weld area of ​​the part 300. The at least two flame heads 220 are spaced apart along the extension direction of the connecting pipe 230, so that the at least two flame heads 220 can be aligned with the weld area of ​​the part 300.

[0047] This configuration allows the combustible gas in the gas cylinder 100 to be delivered to the burner head 220 for ignition. The ignited flame can be ejected from the burner head 220 and precisely sprayed onto the weld area of ​​the part 300 for heating, avoiding deviation of the sprayed flame angle and damage to the part 300.

[0048] It should be noted that by setting at least two flame heads 220, the flame area is increased compared to heating with a single handheld flame head. As the part 300 is driven to rotate by the drive assembly 500, the weld seam can be heated by multiple flame heads 220 in sequence, thereby reducing the cooling rate and improving the heat preservation effect.

[0049] Furthermore, the burner head 220 includes a combustion chamber and a nozzle. The combustion chamber is connected to the nozzle. The combustion chamber is used to ignite combustible gas and combustion-supporting gas to form a flame. The nozzle is used to spray the flame. The nozzles of the multiple burners head 220 are all oriented towards the part 300.

[0050] Specifically, combustible gas is transported to connecting pipe 230 via gas supply pipe 600, and combustion-supporting gas is transported to connecting pipe 230 via combustion-supporting pipe 211 (described below). The combustion chamber is connected to connecting pipe 230, so that combustible gas and combustion-supporting gas can be transported to the combustion chamber via connecting pipe 230 for mixing. An ignition head is provided in the combustion chamber to ignite the mixed combustible gas and combustion-supporting gas. The nozzle is connected to the combustion chamber, so that the flame can be ejected from the nozzle and sprayed onto the weld area of ​​part 300 for heating.

[0051] In one possible implementation, combining Figure 1 As shown, the connecting pipe 230 is an arc-shaped pipe, and the flame heads 220 are distributed at equal angles along the extension direction of the connecting pipe 230.

[0052] Specifically, in combination Figure 1As shown, part 300 can be a wind turbine tower, which is cylindrical. The connecting pipe 230 can be an arc-shaped pipe, which can be concentrically set with the outer wall of the wind turbine tower. The flame heads 220 are distributed at equal angles along the extension direction of the connecting pipe 230, so that the distance between each flame head 220 and the wind turbine tower is consistent, so as to heat the weld area of ​​part 300 evenly and improve the welding quality.

[0053] Of course, in other embodiments, the connecting pipe 230 can also be of other shapes, as long as the extension direction of the connecting pipe 230 is consistent with the extension direction of the weld of the part 300, ensuring that the distance between each flame head 220 and the weld area of ​​the part 300 is consistent, thereby ensuring the uniformity of flame spraying.

[0054] In one possible implementation, combining Figure 1 As shown, the support member 210 includes a combustion-supporting pipe 211 and a base 212. The combustion-supporting pipe 211 extends vertically and its top end is connected to the burner head 220. The bottom end of the combustion-supporting pipe 211 is connected to the base 212, which is used to support the burner head 220.

[0055] Specifically, in combination Figure 1 As shown, the output end of the combustion-supporting pipe 211 is connected to the connecting pipe 230, which can transport the combustion-supporting gas into the connecting pipe 230, mix it with the combustible gas transported into the connecting pipe 230, and then transport it into the burner head 220, ignite it through the burner head 220, and spray the flame to the weld area of ​​the part 300.

[0056] The combustion-supporting pipe 211 extends vertically and can be made of steel to support the connecting pipe 230 and at least two flame heads 220 connected to it, allowing the flame heads 220 to be aligned with the weld area of ​​the part 300 without manual handling. Furthermore, combined with... Figure 1 As shown, the bottom end of the combustion-supporting pipe 211 is connected to the base 212, increasing the contact area with the ground and enhancing stability.

[0057] In one possible implementation, combining Figure 1 As shown, the drive assembly 500 includes a drive motor 510, a support base 520, and at least two rollers 530 disposed at both ends of the support base 520. The rollers 530 are used to support the part 300, and the drive motor 510 is used to drive the rollers 530 to rotate, so as to drive the part 300 to rotate.

[0058] Specifically, in combination Figure 1As shown, at least two rollers 530 are provided on the support base 520. The at least two rollers 530 are respectively provided at both ends of the support base 520. The part 300 is provided on the rollers 530 and the part 300 exerts pressure on the rollers 530. The output end of the drive motor 510 is connected to the rollers 530. Starting the drive motor 510 can drive the rollers 530 to rotate. There is friction between the rollers 530 and the part 300. The part 300 is driven to rotate by this friction.

[0059] Among them, anti-slip textures can be provided on the roller surface of roller 530. The extension direction of the anti-slip textures can form an angle with the tangential direction of part 300, thereby increasing the friction between roller 530 and part 300, thereby enhancing the driving force and facilitating the rotation of part 300.

[0060] Of course, combined Figure 1 As shown, roller 530 is connected to one end of connecting shaft, and the other end of connecting shaft is hinged to support base 520. With this configuration, the angle between connecting shaft and support base 520 can be adjusted according to the actual size of part 300, thereby adjusting the distance between rollers 530 to provide maximum driving force to drive part 300 to rotate.

[0061] In one possible implementation, combining Figure 1 As shown, it also includes a control component 400, which includes a control valve 410 and a controller 420. The burner head 220 is connected to the gas cylinder 100 through a gas pipeline 600. The control valve 410 is installed on the gas pipeline 600 and is used to control the opening and closing of the gas pipeline 600. The controller 420 is signal-connected to the control valve 410 and has a preset timing function. The controller 420 is used to operate the control valve 410 to close according to the preset time of the preset timing function, so as to control the flame heating time of the burner head 220 by controlling the opening and closing of the gas pipeline 600.

[0062] Specifically, in combination Figure 1 As shown, the gas cylinder 100 and the burner head 220 are connected through the gas supply pipe 600. The combustible gas in the gas cylinder 100 can be transported to the burner head 220 through the gas supply pipe 600 and ignited to form a flame, which is then sprayed onto the weld area of ​​the part 300.

[0063] The gas pipeline 600 may be equipped with a control valve 410, which is connected to the controller 420. The controller 420 outputs a signal to adjust the opening of the control valve 410, that is, to close the control valve 410, cut off the supply of combustible gas to the burner head 220, thereby extinguishing the flame and stopping the heating operation on the weld area of ​​the part 300.

[0064] It is understandable that the controller 420 has a preset timing function. The preset timing function can preset the heating and heat preservation time required for the weld area of ​​the part 300 after welding. When the preset time is reached, the controller 420 can adjust the control valve 410 to close, cut off the flammable gas, and extinguish the flame at the burner head 220.

[0065] This configuration allows for flexible control of the flame heating time of the burner head 220, preventing overheating or insufficient heating time, ensuring the heating and insulation effect of the weld, guaranteeing welding quality, and eliminating the need for dedicated personnel to shut off the gas supply to the burner head 220, thus saving manpower.

[0066] Furthermore, the controller 420 is a PLC controller, which is equipped with a timing module. The control valve 410 is connected to the timing module via a signal. The timing module is used to preset the timed shutdown time based on the heating intensity of the part 300. The control valve 410 is used to respond to the preset timed shutdown signal output by the timing module to realize timed shutdown.

[0067] It is understandable that the controller 420 can be a PLC controller, which contains a timing module. The output of the timing module is connected to the control valve 410. The timing module can preset the timed shutdown time based on the heating intensity of the component 300. After the preset timed shutdown time is reached, the timing module can output a signal to the control valve 410. Upon receiving the signal, the control valve 410 closes, thereby cutting off the gas supply pipeline 600, shutting off the burner head 220, and stopping heating. The shutdown time can be precisely controlled without manual intervention, avoiding situations where the heating time is too long or too short. It should also be noted that nighttime heating is unavoidable; this setting avoids the need for staff to constantly monitor the burner head 220, saving manpower.

[0068] Of course, in other embodiments, the controller 420 can also be a timer socket or a timer relay. Both timer sockets and timer relays have a timer function. After the preset time is reached, the control valve 410 can be operated to close, thereby cutting off the combustible gas and extinguishing the flame at the burner head 220.

[0069] Furthermore, the control valve 410 can be an electromagnetic shut-off valve, which can be controlled to close at a time by the controller 420.

[0070] Of course, in other embodiments, the control valve 410 can also be an electric ball valve, an electric butterfly valve, etc., as long as it can be remotely controlled to close via timed control by the controller 420.

[0071] In one possible implementation, combining Figure 1As shown, the drive component 500 is electrically connected to the controller 420, which is used to synchronously control the drive component 500 to shut down via a preset timing function.

[0072] Specifically, in combination Figure 1 As shown, the drive component 500 is electrically connected to the controller 420. The controller 420 can synchronously control the drive component 500 to shut down through a preset timing function. The drive component can drive the part 300 to move.

[0073] Understandably, based on the specific conditions of the weld area of ​​part 300, the required heating time can be preset using the preset timing function of controller 420. When the preset time is reached (when the weld area of ​​part 300 no longer needs to be heated), controller 420 can output a signal to control valve 410 to close, thereby extinguishing the flame and stopping the heating of the weld area of ​​part 300. At the same time, controller 420 also outputs a signal to synchronously control drive component 500 to close, so that part 300 stops rotating without manual operation, avoiding the waste of energy caused by part 300 rotating continuously.

[0074] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A heating device for the weld area of ​​a part, characterized in that, include: A gas cylinder (100) containing a flammable gas; A flame-spraying structure (200) includes a support member (210) and at least two flame heads (220) disposed on the support member (210). The gas cylinder (100) is connected to the flame heads (220) to supply the combustible gas to the flame heads (220). The support member (210) has a flow channel for supplying combustion-supporting gas to the flame heads (220). The flame heads (220) are used to ignite the combustible gas and the combustion-supporting gas. A drive assembly (500) is used to drive the movement of the part (300) so that the weld area of ​​the part (300) is sequentially aligned with the flame head (220).

2. The heating device for the weld area of ​​a part according to claim 1, characterized in that, The flame-spraying structure (200) also includes a connecting pipe (230), which is connected to the outlet end of the gas cylinder (100). The extension direction of the connecting pipe (230) is consistent with the extension direction of the weld of the part (300). The flame-spraying head (220) is connected to the side wall of the connecting pipe (230) and is spaced apart along the extension direction of the connecting pipe (230).

3. The heating device for the weld area of ​​a part according to claim 2, characterized in that, The burner head (220) includes a combustion chamber and a nozzle. The combustion chamber is connected to the nozzle. The combustion chamber is used to ignite the combustible gas and the combustion-supporting gas to form a flame. The nozzle is used to spray the flame. The nozzles of the plurality of burners (220) are all oriented toward the part (300).

4. The heating device for the weld area of ​​a part according to claim 2, characterized in that, The connecting pipe (230) is an arc-shaped pipe, and the flame head (220) is distributed at equal angles along the extension direction of the connecting pipe (230).

5. The heating device for the weld area of ​​a part according to any one of claims 1-4, characterized in that, The support member (210) includes a combustion-supporting pipe (211) and a base (212). The combustion-supporting pipe (211) extends vertically, and the top end of the combustion-supporting pipe (211) is connected to the flame head (220). The bottom end of the combustion-supporting pipe (211) is connected to the base (212). The base (212) is used to support the flame head (220).

6. The heating device for the weld area of ​​a part according to any one of claims 1-4, characterized in that, The drive assembly (500) includes a drive motor (510), a support base (520), and at least two rollers (530) disposed at both ends of the support base (520). The rollers (530) are used to support the part (300), and the drive motor (510) is used to drive the rollers (530) to rotate, so as to drive the part (300) to rotate.

7. The heating device for the weld area of ​​a part according to any one of claims 1-4, characterized in that, It also includes a control component (400), which includes a control valve (410) and a controller (420). The burner head (220) is connected to the gas cylinder (100) through a gas pipeline (600). The control valve (410) is disposed on the gas pipeline (600) and is used to control the opening and closing of the gas pipeline (600). The controller (420) is signal-connected to the control valve (410) and has a preset timing function. The controller (420) is used to operate the control valve (410) to close according to the time preset by the preset timing function, so as to control the flame heating time of the burner head (220) by controlling the opening and closing of the gas pipeline (600).

8. The heating device for the weld area of ​​a part according to claim 7, characterized in that, The controller (420) is a PLC controller, and the PLC controller is equipped with a timing module. The control valve (410) is connected to the timing module. The timing module is used to preset the timed shutdown time according to the heating intensity of the part (300). The control valve (410) is used to respond to the preset timed shutdown signal output by the timing module to realize timed shutdown.

9. The heating device for the weld area of ​​a part according to claim 8, characterized in that, The control valve (410) is an electromagnetic shut-off valve.

10. The heating device for the weld area of ​​a part according to claim 8, characterized in that, The drive component (500) is electrically connected to the controller (420), and the controller (420) is used to synchronously control the drive component (500) to shut down through the preset timing function.

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