Flexible electromagnetic induction heating device, back burning system and method

Abstract

The invention relates to a flexible electromagnetic induction heating device, a back burning system and a method, all electromagnetic induction heating pieces of heating mechanisms in the heating device can do lifting movement and reciprocating deflection movement around the horizontal circumferential direction relative to a first supporting piece to adapt to different weld joint curved surfaces, and the multiple heating mechanisms can do reciprocating movement left and right to adapt to different weld joint intervals; the back burning system can drive the heating device to move in a large range in the three-dimensional direction and do 90-degree reciprocating rotation motion around the vertical axial direction, monitoring is conducted during back burning, and according to the positions and the extending directions of multiple welding seams, the distance between every two welding seams, the distance between the heating device and a to-be-heated face and fluctuation of the welding seams, the welding seams are subjected to back burning. The electromagnetic induction heating pieces of the heating mechanisms are adjusted and aligned to the proper positions above the welding seams, heat treatment can be conducted on the to-be-heated faces, visual remote control can be achieved through the control end, meanwhile, accurate back burning is conducted on the transverse or longitudinal welding seams, the back burning intelligent efficiency, applicability and environment friendliness are remarkably improved, and the ship body back burning device is suitable for being applied and popularized in ship body back burning.

Description

Technical Field

[0001] The invention belongs to the technical field of marine back-firing, and in particular relates to a flexible electromagnetic induction heating device, a back-firing system and a method. Background Art

[0002] During the hull construction process, residual stress will be generated during welding operations, and the correction angle will also be deformed, which will lead to local deformation of the hull structure. In order to prevent this deformation, the back of the weld needs to be back-burned, which can not only eliminate the angle deformation, but also eliminate the internal stress, and it is also a pre-deformation. When building a ship, especially a large hull, the area of ​​steel plates that need to be back-burned is very large, and the requirements for back-burning quality are also high. The traditional pyrotechnic back-burning construction method uses one person to operate a back-burning tool, which consumes a lot of manpower and material resources, is inefficient, and relies on the experience and technology of the workers. Toxic gases are also produced during the back-burning process, which affects the health of the workers. Therefore, the heating device, as a key device of the back-burning system, is crucial to the efficiency, degree of automation and quality of the back-burning. Compared with the flame gun nozzle type heating device, the electromagnetic induction heating device uses a heating coil to heat treat the weld, which has the advantages of standardization, light load and more environmental protection. Compared with the heating device that can only back-burn one weld at a time, although patents CN115261593A, CN117015094A, etc. use two heating coils, two welds can be back-burned at a time, and each heating coil can be independently raised and lowered relative to the heating surface, which increases efficiency and flexibility, but the vertical lifting flexibility is not enough. For example, on the uneven slope of the weld, it is easy to cause one end of the heating coil to be closer to the heating surface and the other end to be farther away. Therefore, it is difficult to adapt to different weld curved surfaces, and the ability to adapt to changes is poor, and it is difficult to meet the back-burning requirements.

[0003] Compared with back-burning systems and methods with fewer heating devices, although patents CN109333550B, CN219336493U, etc. use multiple heating or ignition devices on rollers or beams to adapt to the simultaneous back-burning of multiple surfaces to be heated, and can relatively adjust the distance between adjacent heating or ignition devices to increase efficiency and flexibility, they can only achieve a large range of movement in a certain direction. After the back-burning of the weld in the horizontal direction is completed, the weld in the vertical direction cannot be back-burned. Although the wheeled back-burning system is more flexible in steering than the track-type structure, the stability and accuracy of back-burning of multiple welds cannot meet the requirements. Summary of the invention

[0004] The present invention aims to solve at least one of the above-mentioned technical problems to a certain extent. The present invention provides a flexible electromagnetic induction heating device, a back-burning system and a method, which have a strong ability to adapt to different weld curves and spacings, and can accurately back-burn multiple horizontal or vertical welds at the same time, significantly improving the intelligent efficiency and applicability of back-burning, and is suitable for hull back-burning.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A flexible electromagnetic induction heating device comprises a heating mechanism, wherein the heating mechanism comprises a first support member and two electromagnetic induction heating members spaced apart from each other. A first driving mechanism is provided on the first support member, and the first driving mechanism is used to drive each electromagnetic induction heating member to perform lifting and lowering movement relative to the first support member and reciprocating deflection movement around a horizontal circumference.

[0007] Further, the first driving mechanism includes a first driving motor, a first shaft, a second driving motor and a first bracket, the first driving mechanism is used to drive the first shaft to rotate around a horizontal axis, the first shaft is provided with a first bevel tooth, the second driving mechanism is used to drive the first bracket to reciprocate around the axial direction of the first shaft, the first bracket is provided with a second shaft and an elastic support member, the second shaft is perpendicular to the first shaft, the second shaft is provided with a second bevel tooth and a cam, the second bevel tooth is meshed with the first bevel tooth, the cam is provided with a protrusion that can cooperate with the elastic support member, and the elastic support member can elastically support each electromagnetic induction heating element parallel to the second shaft.

[0008] Furthermore, the elastic support member includes a guide member, a limit member and an elastic member. The guide member and the first bracket are slidably matched in a direction parallel to the second axis. The guide member is provided with a roller that cooperates with the protrusion. The limit member is connected to the guide member. The elastic member is located between the limit member and the first bracket. The elastic member can be extended and retracted parallel to the second axis.

[0009] Furthermore, it includes a second support member and a plurality of heating mechanisms spaced apart from each other, a second driving mechanism is provided between the plurality of heating mechanisms and the second support member, and the second driving mechanism is used to drive each heating mechanism to reciprocate left and right.

[0010] Furthermore, the first support member slides with the second support member along the moving direction of the heating mechanism, and the second driving mechanism includes a first rack, a plurality of third driving motors and a first gear. The rack is arranged on the second support member, and the plurality of third driving motors are respectively arranged on each first support member. The third driving motor is used to drive the first gear to rotate, and the first gear is meshed with the first rack.

[0011] A flexible electromagnetic induction back-burning system comprises a third driving mechanism and the flexible electromagnetic induction heating device as described above, wherein the third driving mechanism is used to drive the flexible electromagnetic induction heating device to move in three-dimensional directions and to perform reciprocating 90° rotational motion around a vertical axis.

[0012] Furthermore, the third driving mechanism includes a Y-direction moving mechanism. The Y-direction moving mechanism includes a longitudinal track and a portal truss. The portal truss is provided with at least one driving wheel that cooperates with the longitudinal track along the longitudinal direction.

[0013] Furthermore, the third driving mechanism includes an X-direction moving mechanism, which includes a transverse track and a sliding member that slide in lateral direction. Two traction mechanisms are arranged in the transverse track, and traction ropes are arranged between the two traction mechanisms and the two sides of the sliding member.

[0014] Furthermore, the third driving mechanism includes a height-changing actuator, and the height actuator includes at least one vertical electric telescopic rod, and two ends of the electric telescopic rod are respectively connected to the portal truss and the transverse track.

[0015] Furthermore, the third driving mechanism includes a steering mechanism, which includes a cylinder, a second rack and a third shaft. The cylinder is used to drive the second rack to move back and forth laterally. The third shaft is vertically arranged on the sliding member. The third shaft is provided with a second gear meshing with the second rack. The second support member is connected to the third shaft.

[0016] Furthermore, it includes a control system, which includes a power supply device, a camera device, a control box and a control end, the power supply device is used to supply power to the first drive mechanism, the second drive mechanism, the third drive mechanism and each electromagnetic induction heating element, the camera device is used to monitor the position to be heated, the distance between the heating device and the surface to be heated, and the undulation of the weld, the control box is used to coordinate the operation of the power supply device, the first drive mechanism, the second drive mechanism, the third drive mechanism and each electromagnetic induction heating element according to the monitoring data of the camera device, and the control end remotely interacts with the control box through a control platform and / or a mobile phone APP.

[0017] Furthermore, it includes a water chiller, which is used to cool the control system and the heating device.

[0018] Furthermore, the power supply device includes a high-frequency power supply, a transformer and a cable winch. Cables are provided between the high-frequency power supply and the transformer, and between the transformer and each electromagnetic induction heating element. The cable is provided with a drag chain or is wound around the cable winch. The cable includes a spring cable connected to each electromagnetic induction heating element.

[0019] A flexible electromagnetic induction back-burning method, based on the flexible electromagnetic induction back-burning system as described above, comprises:

[0020] Monitor the position and extension direction of multiple welds, the distance between every two welds, the distance between the heating device and the surface to be heated, and the ups and downs of the welds to obtain monitoring data;

[0021] During back-burning, the heating device is controlled to move along the extension direction of multiple welds according to monitoring data, and the electromagnetic induction heating elements of each heating mechanism are adjusted and aligned with the appropriate position above each weld to perform heat treatment on the surface to be heated.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The heating device of the present invention uses an electromagnetic induction heating element to move up and down relative to the first support element and to perform a composite motion of reciprocating deflection around a horizontal circumference. It can move relative to the weld surface perpendicularly rather than moving up and down vertically to increase the heating uniformity of the weld surface, thereby solving the problem that the existing system cannot adapt to different weld surfaces due to insufficient flexibility when back-heating two welds at a time.

[0024] (2) The heating device of the present invention drives multiple heating mechanisms to move back and forth left and right, and has a strong ability to adapt to different weld spacings, further solving the previous problems of insufficient efficiency and accurate back-burning of multiple welds at the same time.

[0025] (3) The back-burning system of the present invention can move in three-dimensional directions and perform reciprocating 90° rotational motion around the vertical axis through the heating device, and can move over a large range in the three directions of X, Y, and Z. It is very advantageous for the back-burning of large steel plates. At the same time, it solves the existing problem of being unable to back-burn the weld in the vertical direction after the back-burning of the weld in the horizontal direction is completed through rapid steering.

[0026] (4) The back-burning system and method of the present invention improve the intelligence of the back-burning system through monitoring and control of the control system, so that the quality of back-burning is no longer determined solely by the experience of workers. It can be controlled by a console or a mobile phone. The control terminal is simple and easy to use, which greatly reduces the labor intensity of workers. Workers can control it away from the back-burning site, protecting their health. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a stereogram of embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the main view application of Embodiment 1 of the present invention;

[0030] Figure 3 is a side view application schematic diagram of embodiment 1 of the present invention;

[0031] Figure 4 is a top perspective view of embodiment 2 of the present invention;

[0032] Figure 5 is a bottom-up stereogram of embodiment 2 of the present invention;

[0033] Figure 6 is a top view application schematic diagram of embodiment 2 of the present invention;

[0034] Figure 7 is a top perspective view of embodiment 3 of the present invention;

[0035] Figure 8 is a bottom-up stereogram of embodiment 3 of the present invention;

[0036] Fig. 9 is a partial internal structure diagram of Embodiment 3 of the present invention;

[0037] Fig.10 It is an application schematic diagram of embodiment 4 of the present invention.

[0038] Markings in the figure: heating device 1; heating mechanism 11, first support member 111, electromagnetic induction heating member 112, first driving mechanism 113, first driving motor 1131, first shaft 1132, second driving motor 1133, first bracket 1134, first bevel gear 1135, second shaft 1136, second bevel gear 1137, cam 1138, protrusion 1139, elastic support member 114, guide member 1141, stop member 1142, elastic member 1143, roller 1144; second support member 12, through hole 121; second driving mechanism 13, first rack 131, third driving motor 132, first gear 133;

[0039] The third driving mechanism 2; the Y-direction moving mechanism 21, the longitudinal track 211, the door-type truss 212, the limiting groove 2121, the driving wheel 213, the driven wheel 214; the X-direction moving mechanism 22, the transverse track 221, the sliding member 222, the ear 223, the traction mechanism 224, the traction rope 225; the height changing actuator 23, the electric telescopic rod 231; the steering mechanism 24, the housing 241, the cylinder 242, the second rack 243, the third shaft 244, the second gear 245;

[0040] Control system 3, power supply device 31, high frequency power supply 311, transformer 312, cable winch 313, second bracket 314, third bracket 315, fourth bracket 316, fifth bracket 317, drag chain 318, camera 32, control box 33, control platform 34, mobile phone APP 35;

[0041] The distance d between every two welds, the distance h between the heating device and the surface to be heated, the left weld 4, the right weld 5, the longitudinal weld 6, the transverse weld 7, and the steel plate 8. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "height", "up", "down", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Embodiment 1:

[0046] In view of the problem that the prior art cannot adapt to different weld curves due to insufficient flexibility when back-heating two welds at a time, such as Figure 1As shown, a preferred embodiment of a flexible electromagnetic induction heating device of the present invention is shown. The flexible electromagnetic induction heating device 1 includes a heating mechanism 11, and the heating mechanism 11 includes a first support member 111 and two electromagnetic induction heating members 112 spaced apart from each other. The first support member 111 is provided with a first driving mechanism 113, and the first driving mechanism 113 is used to drive each electromagnetic induction heating member 112 to perform lifting and lowering movement and reciprocating deflection movement around the horizontal circumference relative to the first support member 111. The electromagnetic induction heating member 112 can move relative to the weld surface perpendicularly rather than vertically lifting and lowering movement under the composite movement through the added deflection movement, thereby increasing the heating uniformity of the weld surface, and thus having a strong ability to adapt to different weld surfaces.

[0047] Further, the first driving mechanism 113 includes a first driving motor 1131, a first shaft 1132, a second driving motor 1133 and a first bracket 1134. The first driving mechanism 113 can be axially connected to the first shaft 1132 to drive the first shaft 1132 to rotate around a horizontal axis. The first shaft 1132 is provided with a first bevel gear 1135. The second driving mechanism 113 can be axially connected to the first bracket 1134 to drive the first bracket 1134 to reciprocate around the axial direction of the first shaft 1132. The first bracket 1134 is provided with a second shaft 1136. and an elastic support member 114, the second shaft 1136 is perpendicular to the first shaft 1132, a second bevel tooth 1137 and a cam 1138 are provided on the second shaft 1136, the second bevel tooth 1137 is meshed with the first bevel tooth 1135, the cam 1138 is provided with a protrusion 1139 that can cooperate with the elastic support member 114, the elastic support member 114 can elastically support each electromagnetic induction heating member 112 parallel to the second shaft 1136, and transmission can be achieved through the meshing of the first bevel tooth 1135 and the second bevel tooth 1137, the structure is simpler, and it is beneficial to reduce the driving load and energy consumption.

[0048] Furthermore, the first shaft 1132 passes through the first bracket 1134, which can further improve stability.

[0049] Furthermore, the elastic support member 114 includes a guide member 1141, a stopper 1142 and an elastic member 1143. The guide member 1141 and the first bracket 1134 slide in a direction parallel to the second shaft 1136. The guide member 1141 is provided with a roller 1144 that cooperates with the protrusion 1139. The stopper 1142 is connected to the guide member 1141. The elastic member 1143 is located between the stopper 1142 and the first bracket 1134. The elastic member 1143 It can be extended and retracted parallel to the second axis 1136. The elastic member 1143 can be a spring. One end of the guide member 1141 passes through the first bracket 1134 and the spring connection limit member 1142, and the spring is pre-stressed. The electromagnetic induction heating element 112 can use a heating strip, and the heating strip is installed at the other end of the guide member 1141 to achieve elastic support and installation of the electromagnetic induction heating element 112 by the elastic support member 114, and the roller 1144 cooperates with the protrusion 1139 to reduce friction resistance and improve stability.

[0050] The working principle of the above-mentioned heating device 1 includes:

[0051] like Figure 2 As shown in (a), if the heights of the two weld sections are consistent, the protrusion 1139 and the roller 1144 give way, and the two electromagnetic induction heating elements 112 maintain consistent positions under the support of the elastic support member 114; Figure 2 As shown in (b), when the left weld 4 is lower than the right weld 5 due to deformation on the surface to be heated, the first drive motor 1131 drives the first shaft 1132 to rotate around the horizontal axis, and the first bevel tooth 1135 rotates synchronously, driving the second bevel tooth 1137 meshing with the first bevel tooth 1135 to rotate, then the second shaft 1136 and the cam 1138 on the second shaft 1136 rotate perpendicular to the first shaft 1132, until the protrusion 1139 of the cam 1138 runs to the roller 1144 corresponding to the left electromagnetic induction heating element 112, pushing the guide member 1141 to descend parallel to the first shaft 1132, and the spring is further compressed, then the distance from the left electromagnetic induction heating element 112 to the weld is adjusted to adapt to the concave surface of the left weld 4.

[0052] like Figure 2 As shown in (c), similarly, when the right weld 5 is lower than the left weld 4 due to deformation on the surface to be heated, the first drive motor 1131 drives the first shaft 1132 to rotate in the opposite direction, which can drive the electromagnetic induction heating element 112 on the right side to adapt to the concave surface of the weld 5 on the right side. At the same time, after the protrusion 1139 leaves the roller 1144 of the left electromagnetic induction heating element 112, the guide member 1141 moves in the opposite direction under the support of the elastic force of the spring, and the electromagnetic induction heating element 112 on the left side can be reset; therefore, the lifting and lowering adjustment of the two electromagnetic induction heating elements 112 can be further optimized by further optimizing the shape and number of the protrusions 1139 and the relative position of the roller 1144.

[0053] like Figure 3 As shown in (a), when the height along the extending direction of the weld is kept straight, the second shaft 1136 of the first bracket 1134 can be driven by the second driving motor 1133 to keep it in a vertical state, parallel to the weld surface; Figure 3 As shown in b, when the protrusion 1139 is extended in the direction of the weld and the heating mechanism 11 moves forward, the second driving motor 1133 drives the first bracket 1134 to deflect axially around the first shaft 1132, so that the two electromagnetic induction heating elements 112 are parallel to the weld surface under deflection; Figure 3 As shown in (c), when the heating mechanism 11 moves forward while being depressed in the extending direction of the weld, the second driving motor 1133 drives the first bracket 1134 to deflect in the opposite direction around the axial direction of the first shaft 1132, so that the two electromagnetic induction heating elements 112 are parallel to the weld surface under deflection; Figure 3 As shown in d, when the protrusion 1139 is along the extension direction of the weld and one weld is lower than the other weld, the corresponding electromagnetic induction heating element 112 is driven downward by the first driving motor 1131 under deflection to adjust the heating distance to the weld. Other possible scenarios are adjusted by compound motion in the same way and will not be repeated. Therefore, it can be seen that each electromagnetic induction heating element 112 can perform a compound motion of lifting and lowering movement and reciprocating deflection around the horizontal circumference relative to the first supporting element 111, which greatly increases the adaptability to the weld curved surface, can meet the back-burning processing of different weld cross-sections and undulating extension directions, and is beneficial to improving the processing quality and applicability.

[0054] Embodiment 2:

[0055] Based on the same inventive concept, Figure 4 As shown, another preferred embodiment of the flexible electromagnetic induction heating device described in the present invention includes a second support member 12 and a plurality of heating mechanisms 11 as described in Example 1 spaced apart from each other. A second driving mechanism 13 is provided between the plurality of heating mechanisms 11 and the second support member 12, and the second driving mechanism 13 is used to drive each heating mechanism 11 to reciprocate left and right.

[0056] Furthermore, the first support member 111 slides with the second support member 12 along the moving direction of the heating mechanism 11, and the second driving mechanism 13 includes a first rack 131, a plurality of third driving motors 132 and a first gear 133. The rack is arranged on the second support member 12, and the plurality of third driving motors 132 are respectively arranged on each first support member 111. The third driving motor 132 is used to drive the first gear 133 to rotate, and the first gear 133 is meshed with the first rack 131. The first support member 111 can adopt a sliding platform, and the second support member 12 can adopt a heating platform. Then, the driving shaft of the third driving mechanism 2 can be connected to the first gear 133 and drive the first gear 133 to rotate. The first gear 133 is meshed with the first rack 131 to drive the corresponding sliding platform to slide on the heating platform, thereby changing the distance between adjacent heating mechanisms 11. A polytetrafluoroethylene sheet can be arranged between the contact surfaces of the heating platform and the sliding platform to reduce sliding friction.

[0057] like Figure 5 As shown, further, the second support member 12 is provided with a through hole 121 that slidably cooperates with the first support member 111. The through hole 121 serves to limit the first support member 111, which can further compact the structure.

[0058] like Figure 6 As shown in (a) and 6(b), the second driving mechanism 13 can drive each heating mechanism 11 to move back and forth left and right, so that the electromagnetic induction heating element 112 of each heating mechanism 11 is aligned above the weld, and is responsible for accurately back-burning the weld. It has a strong ability to adapt to different weld spacings and the ability to adapt to different weld curves, which solves the problem of too few heating mechanisms 11 and insufficient efficiency in the past, and the problem of accurately back-burning multiple welds at the same time.

[0059] Embodiment 3:

[0060] Based on the same inventive concept, and aiming at the problem that the existing back-burning system has difficulty in turning the back-burning equipment when back-burning the weld in the vertical direction after back-burning the weld in the horizontal direction, such as Figure 7-8 As shown, a preferred embodiment of a flexible electromagnetic induction back-burning system described in the present invention is shown, and the back-burning system includes a third driving mechanism 2 and a flexible electromagnetic induction heating device 1 as described in Example 2, and the third driving mechanism 2 is used to drive the flexible electromagnetic induction heating device 1 to move in three-dimensional directions and to rotate 90° around the vertical axis. The distance from the heating device 1 to the surface to be heated can be further adjusted by lifting and lowering. The requirements for rapid turning of back-burning of the transverse weld 7 and the longitudinal weld 6 can be met by lateral and longitudinal movement and 90° rotation around the vertical axis, and a large range of movement can be performed in the three directions of XYZ, which is quite advantageous for back-burning of large steel plates 8.

[0061] Furthermore, the third driving mechanism 2 includes a Y-direction moving mechanism 21, and the Y-direction moving mechanism 21 includes a longitudinal track 211 and a portal truss 212. The longitudinal track 211 can be a straight track. The portal truss 212 is provided with at least one driving wheel 213 that cooperates with the longitudinal track 211 in the longitudinal direction. The two driving wheels 213 can be respectively arranged on both sides of the portal truss 212, and a plurality of driven wheels 214 that cooperate with the longitudinal track 211 can be arranged in front and behind each driving wheel 213 to maintain the balance of the portal truss 212. The driving wheel 213 is driven by a motor, and then the portal truss 212 is driven to move along the longitudinal track 211 through the rotation of the driving wheel 213, so that the Y-direction moving mechanism 21 is responsible for the longitudinal movement of the entire back-burning system.

[0062] like Fig. 9 As shown, further, the third driving mechanism 2 includes an X-direction moving mechanism 22, and the X-direction moving mechanism 22 includes a transverse track 221 and a sliding member 222 that slide in the transverse direction. The transverse track 221 can adopt a T-slot track, and both ends are embedded in the limit slots 2121 of the door-type truss 212. The sliding member 222 can adopt a T-bar with ears 223. A polytetrafluoroethylene sheet can be arranged between the contact surface of the T-slot track and the T-bar to reduce sliding friction. Two traction mechanisms 224 are arranged in the transverse track 221. The traction mechanism 224 can adopt a motor winding device. A traction rope 225 is respectively arranged between the two traction mechanisms 224 and the two sides of the sliding member 222. The traction rope 225 can adopt a steel rope, and the T-bar can be pulled by any traction mechanism 224 through the steel rope to make the T-bar move laterally in the T-slot track, so that the X-direction moving mechanism 22 is responsible for controlling the lateral movement of the heating device 1.

[0063] Furthermore, the third driving mechanism 2 includes a height changing actuator 23, which includes at least one vertical electric telescopic rod 231. The electric telescopic rod 231 is driven by a motor to extend and retract multiple sections. The two ends of the electric telescopic rod 231 are respectively connected to the portal truss 212 and the transverse track 221. The electric telescopic rod 231 drives the transverse track 221 to rise and fall relatively to the portal truss 212 to a limited extent, so that the height changing actuator 23 is responsible for controlling the lifting and lowering movement of the heating device 1.

[0064] Furthermore, the third driving mechanism 2 includes a steering mechanism 24. The T-bar can be connected to a housing 241 for installing the steering mechanism 24. The steering mechanism 24 includes a cylinder 242, a second rack 243 and a third shaft 244. The cylinder 242 is used to drive the second rack 243 to move back and forth laterally. The third shaft 244 is vertically arranged on the sliding member 222. The third shaft 244 is provided with a second gear 245 meshing with the second rack 243. The second support member 12 is connected to the third shaft 244. The length of the second rack 243 is one-fourth of the circumference of the second gear 245. When the reciprocating motion of the second rack 243 is driven by the cylinder 242, the second gear 245 can be rotated back and forth 90°, so that the steering mechanism 24 is used to control the steering of the heating device 1. The steering mechanism 24 can also be driven by a motor connected to the third shaft 244 instead of the cylinder 242 and the second rack 243, so as to save the load of the air source device of the cylinder 242.

[0065] Furthermore, it includes a control system 3, which includes a power supply device 31, a camera device, a control box 33 and a control end, the power supply device 31 is used to supply power to the first drive mechanism 113, the second drive mechanism 13, the third drive mechanism 2 and each electromagnetic induction heating element 112, the camera device is used to monitor the position to be heated, the distance h between the heating device and the surface to be heated, and the undulation of the weld, the control box 33 is used to coordinate the operation of the power supply device 31, the first drive mechanism 113, the second drive mechanism 13, the third drive mechanism 2 and each electromagnetic induction heating element 112 according to the monitoring data of the camera device, and the control end remotely interacts with the control box 33 through the control platform 34 and / or the mobile phone APP35.

[0066] The cameras 32 of the camera device can be set on both sides of the bottom of the heating platform, responsible for transmitting the image of the steel plate 8 to the control console in real time, and identifying and obtaining the position to be heated, the distance h between the heating device and the surface to be heated, and the undulation of the weld by real-time image processing. Distance sensors can also be set on both sides of the bottom of the heating platform to replace the monitoring of the distance h between the heating device and the surface to be heated, so as to control the limit movement of the height change actuator 23, so that the distance between the electromagnetic induction heating element 112 and the steel plate 8 is appropriate, which is convenient for back burning; the control box 33 can be installed in the door-type truss 212, and the motors and cylinders 242 of each drive mechanism control The control, camera device and control box 33 can be connected through 4G module signals to control the movement speed, start and stop, distance between heating mechanisms 11, deflection angle of the first bracket 1134 and rise and fall of the left and right electromagnetic induction heating elements 112 of the entire back-burning system, so that the movement parameters of the back-burning system, the operating parameters of the motor, and the operating parameters of the transformer 312 are transmitted to the control platform via Bluetooth, and the parameters can be viewed in real time using a mobile phone APP, and the distance between the heating mechanisms 11 can be adjusted automatically or manually by employees, thereby further improving the intelligent control. The control end is simple and easy to use, so that the quality of back-burning is no longer determined solely by the experience of workers.

[0067] Furthermore, it includes a water chiller, which is used to cool the control system 3 and the heating device 1 through a cooling pipeline.

[0068] Furthermore, the power supply device 31 includes a high-frequency power supply 311, a transformer 312 and a cable winch 313. Cables are provided between the high-frequency power supply 311 and the transformer 312, and between the transformer 312 and each electromagnetic induction heating element 112. The cable is provided with a tow chain 318 outside or is wound around the cable winch 313. The cable winch 313 is connected to the control box 33 by signal. The cable includes a spring cable connected to each electromagnetic induction heating element 112.

[0069] The high-frequency power supply 311 and the transformer 312 can be placed on the truss beam of the portal truss 212. The cable is connected to the electric winch through the second bracket 314, the drag chain 318 and the third bracket 315 of the portal truss 212. The drag chain 318 is used to restrain and protect the cable connected to the second bracket 314 from the transformer 312, so as to facilitate the rotation and movement of the cable when the height change actuator 23 moves, and ensure that the transformer 312 is not affected by the downward pulling force to avoid damage to the transformer 312. The electric winch can be placed above the X-direction moving mechanism 22, and the cable is then passed down from the fourth bracket 316 on the T-bar and the fifth bracket 317 on the steering mechanism 24, and finally connected to each electromagnetic induction heating element 112 with a spring cable. The electric winch controls the retraction and release of the cable when the X-direction moving mechanism 22 moves, and the spring cable can leave a margin for the movement space of the sliding platform.

[0070] Embodiment 4:

[0071] Taking the position to be heated as the weld position as an example, based on the same inventive concept, Fig.10 As shown, a preferred embodiment of a flexible electromagnetic induction back-burning method of the present invention is shown, based on a flexible electromagnetic induction back-burning system as described in Example 3, the method includes:

[0072] Step 1: Set up a flexible electromagnetic induction back-burning system, set the longitudinal track 211 parallel to the longitudinal track 211, and set the transverse track 221 parallel to the transverse track 221, such as Fig.10 As shown in (a), the Y-direction moving mechanism 21 is controlled to move the portal truss 212 to above the welded steel plate 8, and the camera device monitors the positions and extension directions of multiple welds, the distance d between every two welds, the distance h between the heating device and the surface to be heated, and the fluctuation of the welds to obtain monitoring data.

[0073] Step 2: If the weld extends in the longitudinal direction, the X-direction moving mechanism 22 is controlled to align the heating platform with the steel plate 8 according to the positions of the plurality of longitudinal welds 6 .

[0074] Step 3: According to the distance between every two longitudinal welds 6 , adjust the distance between the heating mechanisms 11 on the heating platform so that each electromagnetic induction heating element 112 is aligned with each longitudinal weld 6 .

[0075] Step 4: According to the distance between the heating device 1 and the surface to be heated, i.e., the surface of the steel plate 8 , the height change actuator 23 is controlled to raise and lower the height of the heating device 1 .

[0076] Step 5: Turn on the chiller to cool the back-burning system to ensure that the back-burning system maintains normal operation.

[0077] Step 6: According to the thickness of the steel plate 8, set the movement speed of the back-burning system.

[0078] Step 7: The high frequency power supply 311 is turned on, and the electromagnetic induction heating element 112, i.e. the heating strip, starts heating.

[0079] Step 8: The Y-direction moving mechanism 21 moves at a constant speed, so that the heating device 1 moves along the longitudinal weld 6 for continuous heating. Fig.10 (a) to Fig.10 As shown in (b), the distance between the heating mechanisms 11 on the heating platform can be adjusted in real time.

[0080] Step nine: According to the ups and downs of the longitudinal weld 6, drive the first drive motor 1131 and the second drive motor 1133 at the bottom of the sliding platform of each heating mechanism 11 to control the rise and fall of the left and right heating strips and the deflection angle of the first bracket 1134 to adapt to the ups and downs in different weld cross-sectional directions and extension directions.

[0081] Step 10: If the weld extends in the horizontal direction, Fig.10 As shown in (c), the heating platform is lifted and driven by the steering mechanism 24 to rotate 90°.

[0082] Step 11: Fig.10 As shown in (d), the X-direction moving mechanism 22 is controlled to move the heating platform to the starting end of the transverse weld 7.

[0083] Step 12: According to the distance between every two transverse welds 7 and the distance between the heating device 1 and the surface to be heated, i.e., the surface of the steel plate 8, the height of the heating platform and the distance between the heating mechanisms 11 are controlled so that each electromagnetic induction heating element 112 is aligned with each transverse weld 7.

[0084] Step 13: The X-direction moving mechanism 22 moves at a constant speed, so that the heating device 1 moves along the transverse weld 7 for continuous heating.

[0085] Step 14: According to the ups and downs of the transverse weld 7, drive the first drive motor 1131 and the second drive motor 1133 at the bottom of the sliding platform of each heating mechanism 11 to control the rise and fall of the left and right heating strips and the deflection angle of the first bracket 1134 to adapt to the ups and downs in different weld cross-sectional directions and extension directions.

[0086] Step 15: The heating device 1 has finished working, stops heating, and the back-burning system stops moving.

[0087] Step 16: Shut down the chiller.

[0088] Step 17: Backburn system shutdown.

[0089] The above-mentioned back-burning method obtains monitoring data by monitoring the position and extension direction of multiple welds, the distance d between every two welds, the distance h between the heating device and the surface to be heated, and the undulation of the welds; during back-burning, according to the monitoring data, the heating device 1 is controlled to move along the extension direction of the multiple welds, and the electromagnetic induction heating elements 112 of each heating mechanism 11 are adjusted and aligned with the appropriate position above each weld, and the surface to be heated is heat-treated, breaking the limitations of the small number and low efficiency of the heating mechanism 11, and being able to improve the adaptability of different weld curved surfaces, improve the efficiency of back-burning, solve the problem that the back-burning operation mainly relies on the experience of the workers when manpower is used, and the toxic gas generated by back-burning affects the health of the workers, and greatly reduces the work intensity of the workers; the coverage of the longitudinal track 211 and the transverse track 221 can be set according to demand, and multiple transverse or longitudinal welds can be accurately back-burned at the same time, which significantly improves the intelligent efficiency and applicability of back-burning, is suitable for hull back-burning, has a simpler structure, is easy to operate, and is conducive to promotion and application.

[0090] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible electromagnetic induction heating device, characterized in that: The invention comprises a heating mechanism (11), wherein the heating mechanism (11) comprises a first support member (111) and two electromagnetic induction heating members (112) spaced apart from each other. The first support member (111) is provided with a first driving mechanism (113), and the first driving mechanism (113) is used to drive each electromagnetic induction heating member (112) to move up and down relative to the first support member (111) and to perform reciprocating deflection motion around a horizontal circumference.

2. A flexible electromagnetic induction heating device according to claim 1, characterized in that: The first driving mechanism (113) comprises a first driving motor (1131), a first shaft (1132), a second driving motor (1133) and a first bracket (1134); the first driving mechanism (113) is used to drive the first shaft (1132) to rotate around a horizontal axis, the first shaft (1132) is provided with a first bevel gear (1135); the second driving mechanism (113) is used to drive the first bracket (1134) to reciprocate around the axial direction of the first shaft (1132), the first bracket (1134) is provided with a second A shaft (1136) and an elastic support member (114), wherein the second shaft (1136) is perpendicular to the first shaft (1132), the second shaft (1136) is provided with a second bevel tooth (1137) and a cam (1138), the second bevel tooth (1137) is meshed with the first bevel tooth (1135), the cam (1138) is provided with a protrusion (1139) capable of cooperating with the elastic support member (114), and the elastic support member (114) is capable of elastically supporting each electromagnetic induction heating element (112) parallel to the second shaft (1136).

3. A flexible electromagnetic induction heating device according to claim 2, characterized in that: The elastic support member (114) comprises a guide member (1141), a limit member (1142) and an elastic member (1143); the guide member (1141) and the first bracket (1134) are slidably matched in a direction parallel to the second shaft (1136); a roller (1144) matched with the protrusion (1139) is provided on the guide member (1141); the limit member (1142) is connected to the guide member (1141); the elastic member (1143) is located between the limit member (1142) and the first bracket (1134); and the elastic member (1143) can be extended and retracted parallel to the second shaft (1136).

4. A flexible electromagnetic induction heating device according to any one of claims 1 to 3, characterized in that: It comprises a second support member (12) and a plurality of heating mechanisms (11) spaced apart from each other. A second driving mechanism (13) is provided between the plurality of heating mechanisms (11) and the second support member (12). The second driving mechanism (13) is used to drive each heating mechanism (11) to reciprocate from left to right.

5. A flexible electromagnetic induction heating device according to claim 4, characterized in that: The first support member (111) is slidably matched with the second support member (12) along the moving direction of the heating mechanism (11); the second driving mechanism (13) comprises a first rack (131), a plurality of third driving motors (132) and a first gear (133); the rack is arranged on the second support member (12); the plurality of third driving motors (132) are respectively arranged on each of the first support members (111); the third driving motors (132) are used to drive the first gear (133) to rotate; and the first gear (133) is meshed with the first rack (131).

6. A flexible electromagnetic induction back-burning system, characterized in that: It comprises a third driving mechanism (2) and the flexible electromagnetic induction heating device (1) as claimed in claim 4, wherein the third driving mechanism (2) is used to drive the flexible electromagnetic induction heating device (1) to move in three-dimensional directions and to perform reciprocating 90° rotational motion around a vertical axis.

7. A flexible electromagnetic induction back-burning system according to claim 6, characterized in that: The third driving mechanism (2) comprises a Y-direction moving mechanism (21), an X-direction moving mechanism (22), a height change actuator (23) and a steering mechanism (24); The Y-direction moving mechanism (21) comprises a longitudinal track (211) and a door-type truss (212); the door-type truss (212) is provided with at least one driving wheel (213) that cooperates with the longitudinal track (211) in the longitudinal direction; The X-direction moving mechanism (22) comprises a transverse track (221) and a sliding member (222) that are slidably matched in the transverse direction, two traction mechanisms (224) are arranged in the transverse track (221), and traction ropes (225) are arranged between the two traction mechanisms (224) and the two sides of the sliding member (222); The height actuator comprises at least one vertical electric telescopic rod (231), and two ends of the electric telescopic rod (231) are respectively connected to the door-shaped truss (212) and the transverse track (221); The steering mechanism (24) comprises a cylinder (242), a second rack (243) and a third shaft (244); the cylinder (242) is used to drive the second rack (243) to move back and forth laterally; the third shaft (244) is vertically arranged on the sliding member (222); the third shaft (244) is provided with a second gear (245) meshing with the second rack (243); and the second support member (12) is connected to the third shaft (244).

8. The flexible electromagnetic induction back-burning system according to claim 6, characterized in that: The invention comprises a control system (3), wherein the control system (3) comprises a power supply device (31), a camera device, a control box (33) and a control end, wherein the power supply device (31) is used to supply power to a first drive mechanism (113), a second drive mechanism (13), a third drive mechanism (2) and each electromagnetic induction heating element (112), wherein the camera device is used to monitor a position to be heated, a distance h between the heating device and a surface to be heated and the fluctuation of a weld, wherein the control box (33) is used to coordinate the operation of the power supply device (31), the first drive mechanism (113), the second drive mechanism (13), the third drive mechanism (2) and each electromagnetic induction heating element (112) according to monitoring data of the camera device, and wherein the control end remotely interacts with the control box (33) via a control platform (34) and / or a mobile phone APP (35).

9. A flexible electromagnetic induction back-burning system according to claim 8, characterized in that: The power supply device (31) comprises a high-frequency power supply (311), a transformer (312) and a cable winch (313); cables are provided between the high-frequency power supply (311) and the transformer (312), and between the transformer (312) and each electromagnetic induction heating element (112); a tow chain (318) is provided outside the cable or the cable winch (313) is wound around the cable winch (313); the cable comprises a spring cable connected to each electromagnetic induction heating element (112).

10. A flexible electromagnetic induction back-burning method, characterized in that: Based on a flexible electromagnetic induction back-burning system as claimed in claim 6, the method comprises: Monitor the positions and extension directions of multiple welds, the distance d between every two welds, the distance h between the heating device and the surface to be heated, and the fluctuation of the welds to obtain monitoring data; During back-burning, the heating device (1) is controlled to move along the extension direction of the plurality of welds according to monitoring data, and the electromagnetic induction heating elements (112) of the heating mechanisms (11) are adjusted and aligned with appropriate positions above the welds to heat treat the surface to be heated.

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