Convection bank tailor-welding detection working device

Abstract

The invention discloses a convection bank tailor-welding detection working device, and belongs to the technical field of welding equipment. The two X-direction sliding assemblies, the two Y-direction sliding assemblies, the two pushing assemblies and the two pressing assemblies are symmetrically arranged on the two sides of the center line of the frame body. A clamping and positioning assembly is arranged at the center line of the frame main body; a pressing positioning assembly is fixed to the moving end of the Y-direction sliding assembly, and an angle detection assembly is fixed to the lower portion of the Y-direction sliding assembly. The pushing assembly, the pressing assembly and the clamping and positioning assembly are used for positioning a workpiece, and welding of the workpiece is facilitated; and the pressing and positioning assembly and the angle detection assembly are used for detecting the welded workpiece. Convection banks of different models can be automatically clamped and welded, positioning is convenient and fast, and the repeated precision is high; after welding is completed, precision detection of welded products is directly completed on the basis of clamping, welding and detection are integrated, the equipment cost is reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to a working device for inspecting the welding of convection tube bundles. Background Technology

[0002] Convection tube bundle welding and inspection devices are widely used in the boiler industry. Currently, convection tube bundles are typically welded manually to the base plate and top plate, and then inspected using inspection devices. This process suffers from low welding efficiency, poor welding position accuracy, and low accuracy of manual inspection. Therefore, it is crucial to design tooling fixtures that can quickly position and clamp different convection tube bundles, ensure position requirements, and enable automatic inspection. Summary of the Invention

[0003] The purpose of this invention is to provide a convection tube bundle welding inspection device for positioning and clamping convection tube bundles of various sizes, and to directly inspect the welding quality of the finished product after welding.

[0004] This invention adopts the following technical solution: a convection tube bundle welding inspection device, comprising: Two sets of X-axis sliding components are symmetrically and in the same direction on both sides of the center line of the main frame. Two sets of Y-axis sliding components are respectively vertically fixed to the moving ends of the corresponding X-axis sliding components; a workstation for placing the convection tube bundle is provided on the frame body between the two sets of Y-axis sliding components. Two sets of clamping components are symmetrically fixed at the workstation of the frame body to clamp the middle section of the convection tube bundle in the horizontal direction. Two sets of clamping components are symmetrically fixed at the workstation of the frame body to clamp the middle section of the convection tube bundle in the vertical direction. A clamping and positioning assembly is fixed at the workstation of the frame body; the movable end of the clamping and positioning assembly is used to place the base plate and press the base plate against the lower side of the middle section of the convection tube bundle. Each of the Y-axis sliding components has a fixed pressing and positioning component at its moving end for detecting the position of both ends of the convection tube bundle. Each of the Y-axis sliding components is fixed below an angle detection component for detecting the bending angle at both ends of the convection tube bundle.

[0005] Preferably, the angle detection component includes: An angle detection support is fixed to the lower surface of the Y-axis sliding assembly; An angle detection cylinder is fixed on the angle detection support; an adapter is fixed to the moving end of the angle detection cylinder. An angle detection plate is rotatably mounted on the adapter seat and is used to fit against the bent sections at both ends of the convection tube bundle; An angle sensor is fixed on the adapter; the detection end of the angle sensor is connected to the rotating shaft of the angle detection plate. A reset spring is connected between the angle detection plate and the adapter. The angle detection support is also equipped with a photoelectric switch for detecting the position of the convection tube bundle.

[0006] Preferably, the clamping and positioning assembly includes: The positioning support is pressed and fixed to the moving end of the Y-axis sliding component; The clamping and positioning cylinder is vertically fixed on the clamping and positioning support; The first pull rope sensor is used to detect the displacement of the moving end of the clamping and positioning cylinder; A pressure plate, fixed to the moving end of the clamping and positioning cylinder, is used to vertically press against the end of the convection tube bundle; A positioning baffle, fixed to the clamping positioning support by an insulating plate, is used to abut the end of the convection tube bundle in the X direction.

[0007] Preferably, the clamping assembly includes: The support is tightened by applying pressure to the main frame structure; The clamping cylinder is vertically fixed on the clamping support; The second rope sensor is used to detect the displacement of the moving end of the clamping cylinder; A clamping block, fixed to the moving end of the clamping cylinder, is used to press against the upper side of the middle section of the convection tube bundle in a vertical direction. The frame body is provided with a support block that cooperates with the clamping block and is used to abut against the lower side of the middle section of the convection tube bundle; the support block is provided with a proximity switch for detecting the convection tube bundle.

[0008] Preferably, the moving end of the clamping cylinder is fixed with a pull rope bracket that cooperates with the second pull rope sensor; the second pull rope sensor is fixed on the frame body.

[0009] Preferably, the pressing assembly includes: Push the cylinder and fix it horizontally to the main frame body; A push plate, fixed to the moving end of the push cylinder, is used to press against the front side of the middle section of the convection tube bundle in the horizontal direction. The frame body is provided with a limiting block that cooperates with the push plate and is used to abut against the rear side of the middle section of the convection tube bundle.

[0010] Preferably, the clamping and positioning assembly includes: The clamping and positioning support is fixed to the main frame body; A clamping and positioning cylinder is fixed on the clamping and positioning support; A rotating arm is fixed to the output end of the clamping and positioning cylinder; the output end of the clamping and positioning cylinder is used to drive the rotating arm to rotate. The end of the rotating arm is fixed with an electromagnet for attracting and positioning the base plate; A limiting block is fixed on the main frame body to limit the rotation angle of the rotating arm.

[0011] Preferred options also include: A gripping robot is used to grip the upper plate and place it on the upper side of the convection tube bundle, opposite to the base plate. A welding robot for welding the base plate and convection tube bundle, and for welding the top plate and convection tube bundle.

[0012] Preferably, the X-axis sliding component includes: X-guide rails are fixed to the main frame body; The X-axis slider is slidably mounted on the X-axis guide rail; An X-axis servo motor is fixed on the X-axis slider; a gear is fixed to the output end of the X-axis servo motor. A rack is fixed to the frame body and parallel to the X-guide rail; the gear meshes with the rack. The X-axis sliding assembly also includes an X-axis secondary guide rail fixed to the main frame body and parallel to the X-axis guide rail, on which an X-axis secondary slider is slidably mounted.

[0013] Preferably, the Y-axis sliding component includes: The Y-axis support is fixed at both ends to the X-axis slider and the X-axis auxiliary slider, respectively; The Y-axis guide rail is fixed on the Y-axis support; The Y-axis slider is slidably mounted on the Y-axis guide rail; A lead screw is rotatably mounted on the Y-axis support; the lead screw is threadedly connected to the Y-axis slider. A Y-axis servo motor is fixed on the Y-axis support; the output end of the Y-axis servo motor is connected to one end of the lead screw. The clamping and positioning assembly is fixed on the Y-axis slider.

[0014] The beneficial effects of this invention are as follows: Automatic clamping and welding can be achieved for convection tube bundles of different models. Positioning is convenient, quick, safe, reliable, and has high repeatability. After welding is completed, the precision inspection of the welded product can be performed directly on the basis of clamping, integrating welding and inspection, reducing equipment costs and improving processing efficiency. Attached Figure Description

[0015] The accompanying drawings described below are merely some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0016] Figure 1 This invention provides a three-dimensional testing device for convection tube bundle welding. Figure 1 .

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 This invention provides a three-dimensional testing device for convection tube bundle welding. Figure 2 .

[0019] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0020] Figure 5 This is a front view of a convection tube bundle welding inspection device according to the present invention.

[0021] Figure 6 This is a top view of a convection tube bundle welding inspection device according to the present invention.

[0022] Figure 7 This is a left view of a convection tube bundle welding inspection device according to the present invention.

[0023] Figure 8 This is a schematic diagram of the structure after the convection tube bundle has been welded.

[0024] Figure 9 for Figure 8 Enlarged view of point C in the middle.

[0025] Figure 10 This is a schematic diagram of the assembly of the frame body and the X-direction sliding component in this invention.

[0026] Figure 11 for Figure 10 Enlarged view of point D in the middle.

[0027] Figure 12 for Figure 10 Enlarged view of point E in the middle.

[0028] Figure 13 This is a perspective view of the Y-axis sliding component in this invention.

[0029] Figure 14 This is a perspective view of the push-tightening component in this invention.

[0030] Figure 15 This is a perspective view of the clamping component in this invention.

[0031] Figure 16 This is a perspective view of the clamping and positioning component in this invention.

[0032] Figure 17 This is a perspective view of the angle detection component in this invention.

[0033] Figure 18 for Figure 17 Enlarged view of point F in the middle.

[0034] Figure 19 This is a perspective view of the clamping and positioning component in this invention.

[0035] Explanation of reference numerals in the attached figures: 1. Frame main body; 11. Support block; 12. Proximity switch; 13. Limit stop block; 14. Limit block; 2. X-axis sliding assembly; 21. X-axis guide rail; 22. X-axis slider; 23. X-axis servo motor; 24. Gear; 25. Rack; 26. X-axis secondary guide rail; 27. X-axis secondary slider; 3. Y-axis sliding assembly; 31. Y-axis support; 32. Y-axis guide rail; 33. Y-axis slider; 34. Lead screw; 35. Y-axis servo motor; 4. Clamping and positioning assembly; 41. Clamping and positioning support; 42. Clamping and positioning cylinder; 43. Pressure plate; 44. Positioning baffle; 45. Insulating plate; 46. First pull rope sensor; 5. Angle detection assembly; 51. Angle detection support; 52. Angle detection cylinder; 53. Adapter; 54. Angle detection plate; 55. Angle sensor; 56. Reset spring; 57. Photoelectric switch; 6. Push-tightening assembly; 61. Push-tightening cylinder; 62. Push-tightening plate; 7. Clamping assembly; 71. Clamping support; 72. Clamping cylinder; 73. Second rope sensor; 74. Clamping block; 75. Rope bracket; 8. Clamping and positioning assembly; 81. Clamping and positioning support; 82. Clamping and positioning cylinder; 83. Rotating arm; 84. Electromagnet; 91. Convection tube bundle; 92. Base plate; 93. Top plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. In the description of the present invention, terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", and "around" indicate orientation or positional relationship, and are only for the convenience of describing the present invention and simplifying the description, and should not be construed as limiting the present invention.

[0037] Example 1: like Figures 1 to 7 As shown, this invention provides a convection tube bundle welding inspection device, including a frame body 1 and two sets of X-direction sliding components 2 symmetrically and unidirectionally arranged on both sides of the center line of the frame body 1. A Y-direction sliding component 3 is vertically fixed to the moving end of the X-direction sliding component 2. The X-direction sliding component 2 drives the Y-direction sliding component 3 to slide in the X-direction of the frame body 1, and the moving end of the Y-direction sliding component 3 can slide along the Y-direction of the frame body 1. The position between the X-direction sliding component 2 and the Y-direction sliding component 3 is a workstation for placing the convection tube bundle 91. Figure 8 and Figure 9 As shown, the convection tube bundle 91 includes a straight section in the middle and bent sections formed by bending at both ends. The upper and lower sides of the straight section need to be welded with a mounting plate 93 and a base plate 92.

[0038] like Figures 1 to 7 As shown, two sets of pushing components 6 and two sets of pressing components 7 are symmetrically placed on both sides of the center line of the frame body 1, mainly used to clamp and position the convection tube bundle 91. Combined Figure 14 As shown, the tensioning assembly 6 includes a tensioning cylinder 61 horizontally fixed to the lower side of the workstation of the frame body 1. A tensioning plate 62 is fixed to the moving end of the tensioning cylinder 61, and the tensioning plate 62 extends to the upper side of the workstation. A limiting block 13 that cooperates with the tensioning plate 62 is fixed on the workstation of the frame body 1.

[0039] During operation, the push-tightening cylinder 61 pushes the push-tightening plate 62, which abuts against the front side of the middle section of the convection tube bundle 91 in the horizontal direction, while the limiting block 13 abuts against the rear side of the middle section of the convection tube bundle 91, thus completing the horizontal clamping of the convection tube bundle 91. The push-tightening components 6 on both sides are symmetrically arranged to ensure the straight position of the convection tube bundle 91.

[0040] Combined Figure 15 As shown, the clamping assembly 7 includes a clamping support 71 fixed to the lower side of the workstation of the frame body 1, and a vertical clamping cylinder 72 fixed on the clamping support 71. A clamping block 74 is fixed to the moving end of the clamping cylinder 72, and the upper end of the clamping block 74 is L-shaped and extends to the upper side of the workstation. Figure 10 and Figure 11 As shown, a support block 11 that cooperates with the upper end of the clamping block 74 is fixed on the frame body 1 station. A proximity switch 12 for detecting whether the convection tube bundle 91 is in place is provided on the support block 11.

[0041] During operation, proximity switch 12 first confirms whether the convection tube bundle 91 has been placed on support block 11. Then, clamping cylinder 72 pulls clamping block 74, which presses against the upper side of the middle section of convection tube bundle 91 in the vertical direction. Support block 11 supports the lower side of the middle section of convection tube bundle 91, thus completing the vertical clamping of convection tube bundle 91. The clamping components 7 on both sides are symmetrically arranged to ensure the straight position of convection tube bundle 91.

[0042] In addition, such as Figure 3 , Figure 4 and Figure 15 As shown, a rope bracket 75 is fixed to the moving end of the clamping cylinder 72, and a second rope sensor 73 is fixed to the lower side of the frame body 1. The detection rope of the second rope sensor 73 is connected to the rope bracket 75. During operation, the second rope sensor 73 detects the displacement of the clamping block 74 when it clamps the convection tube bundle 91, and then calculates the height of the middle section of the convection tube bundle 91 to help confirm the overall flatness of the convection tube bundle 91.

[0043] like Figures 1 to 7 ,as well as Figure 16 As shown, the clamping and positioning assembly 8 is located below the middle of the convection tube bundle 91, including a clamping and positioning support 81 fixed to the lower side of the frame body 1, and a clamping and positioning cylinder 82 fixed on the clamping and positioning support 81. The output end of the clamping and positioning cylinder 82 is a rotating shaft; a rotating arm 83 is fixed on the rotating shaft, and the rotation angle of the rotating arm 83 is controlled by the clamping and positioning cylinder 82. An electromagnet 84 is fixed to the distal end of the rotating arm 83, and the base plate 92 is placed on the electromagnet 84; a limiting block 14 that cooperates with the rotating arm 83 is fixed on the frame body 1.

[0044] During operation, the clamping and positioning cylinder 82 drives the distal end of the rotating arm 83 to rise, and the rotating arm 83 contacts the limiting block 14. At this time, the base plate 92 is placed on the electromagnet 84, and then the convection tube bundle 91 is placed, with the base plate 92 attached to the lower middle part of the convection tube bundle 91. After processing is completed, the clamping and positioning cylinder 82 drives the distal end of the rotating arm 83 to descend.

[0045] like Figure 1 , Figure 3 ,as well as Figures 5 to 7 As shown, each Y-axis sliding component 3 has an angle detection component 5 fixed below it for detecting the bending angle at both ends of the convection tube bundle 91, and each moving end of the Y-axis sliding component 3 has a clamping and positioning component 4 fixed therefor detecting the position at both ends of the convection tube bundle 91. The two angle detection components 5 and the two clamping and positioning components 4 are symmetrical in structure and can work together with the clamping component 7, the X-axis sliding component 2 and the Y-axis sliding component 3 to complete the detection of the convection tube bundle 91.

[0046] Combined Figure 17 and Figure 18As shown, the angle detection assembly 5 includes an angle detection support 51 fixed parallel to the lower surface of the Y-axis sliding assembly 3. An angle detection cylinder 52 is fixed on the angle detection support 51, and an adapter 53 is fixed at the moving end of the angle detection cylinder 52. An angle detection plate 54 is rotatably mounted on the adapter 53, and a reset spring 56 is connected between the angle detection plate 54 and the adapter 53. The reset spring 56 is used to hold the angle detection plate 54 in a position perpendicular to the Y-axis sliding assembly 3. An angle sensor 55 is fixed on the adapter 53, and the detection end of the angle sensor 55 is connected to the rotating shaft of the angle detection plate 54. Photoelectric switches 57 are fixed at both ends of the angle detection support 51 for detecting the position of the convection tube bundle 91.

[0047] During operation, at a predetermined position, the angle detection cylinder 52 pulls the adapter 53, causing the angle detection plate 54 to fit into the bent sections at both ends of the convection tube bundle 91; the angle sensor 55 detects the rotation angle of the angle detection plate 54, and then calculates the angle between the bent section and the straight section of the convection tube bundle 91.

[0048] Combined Figure 19 As shown, the clamping and positioning assembly 4 includes a clamping and positioning support 41 fixed to the moving end of the Y-direction sliding assembly 3. A vertically arranged clamping and positioning cylinder 42 is fixed on the clamping and positioning support 41. A pressure plate 43 is fixed to the moving end of the clamping and positioning cylinder 42, and the pressure plate 43 is horizontally arranged. A metal positioning baffle 44 is fixed to one side of the clamping and positioning support 41 via an insulating plate 45. The positioning baffle 44 is vertically arranged. The insulating plate 45 is used to ensure insulation between the positioning baffle 44 and the clamping and positioning support 41. A first pull rope sensor 46 is fixed between the clamping and positioning support 41 and the moving end of the clamping and positioning cylinder 42.

[0049] During operation, the X-axis sliding components 2 on both sides drive the Y-axis sliding components 3 and the clamping and positioning components 4 on both sides to move towards the convection tube bundle 91 until the positioning baffle 44 contacts the outer surfaces of the two ends of the convection tube bundle 91, which are far apart from each other. The positioning baffle 44 and the convection tube bundle 91 are electrically connected, causing the X-axis sliding components 2 to stop. The center distance of the tube ends of the convection tube bundle 91 can be calculated from the moving distance of the X-axis sliding components 2. Then, the clamping and positioning cylinder 42 pushes the pressure plate 43 downward. The pressure plate 43 abuts against the two ends of the convection tube bundle 91 in the vertical direction. The height of the two ends of the convection tube bundle 91 can be calculated by the displacement of the pressure plate 43 detected by the first pull rope sensor 46. Together with the clamping component 7 to detect the height of the middle section of the convection tube bundle 91, the overall flatness of the convection tube bundle 91 is detected.

[0050] Example 2: Based on the above embodiment one, combined with Figures 1 to 3As shown, the X-axis sliding assembly 2 includes a pair of X-axis guide rails 21 fixed to one side of the frame body 1. A rack 25 is arranged parallel to the two X-axis guide rails 21 and is fixed to the frame body 1. An X-axis slider 22 is fixed to an X-axis servo motor 23. The output end of the X-axis servo motor 23 is vertically downward and fixed with a gear 24, which meshes with the rack 25. An X-axis secondary guide rail 26 parallel to the X-axis guide rails 21 is fixed to the other side of the frame body 1, and an X-axis secondary slider 27 is slidably mounted on the X-axis secondary guide rail 26.

[0051] Combination Figures 1 to 3 As shown, the Y-axis sliding assembly 3 includes a Y-axis support 31, which is fixed to an angle detection support 51. The two ends of the angle detection support 51 are respectively fixed to the X-axis slider 22 and the X-axis auxiliary slider 27. A Y-axis guide rail 32, perpendicular to the X-axis guide rail 21, is fixed to the Y-axis support 31, and a Y-axis slider 33 is slidably mounted on the Y-axis guide rail 32. A lead screw 34, parallel to the Y-axis guide rail 32, is also rotatably mounted on the Y-axis support 31. The lead screw 34 is threadedly connected to the Y-axis slider 33, and one end of the lead screw 34 is connected to a Y-axis servo motor 35. The Y-axis servo motor 35 is fixed to one end of the Y-axis support 31. The clamping and positioning support 41 in the clamping and positioning assembly 4 is fixed to the Y-axis slider 33, and the angle detection support 51 in the angle detection assembly 5 is fixed to the lower surface of the Y-axis support 31.

[0052] During operation, the X-axis servo motor 23 drives the gear 24 to rotate, and the gear 24 meshes with the rack 25 to drive the X-axis slider 22 and the Y-axis support 31 to move along the X-axis guide rail 21; ultimately realizing the displacement control of the angle detection component 5 and the clamping and positioning component 4 in the X-axis. The Y-axis servo motor 35 drives the lead screw 34 to rotate, and the lead screw 34 engages with the Y-axis slider 33 for transmission, thereby driving the Y-axis slider 33 to move along the Y-axis guide rail 32; ultimately realizing the displacement control of the clamping and positioning component 4 in the Y-axis.

[0053] Example 3: Based on the above-described embodiment two, combined with Figures 1 to 9 As shown, the working device includes at least one gripping robot and one welding robot. The gripping robot can grasp the convection tube bundle 91, the base plate 92, and the upper plate 93, and place them on predetermined workstations. The welding robot is used to weld the upper plate 93 and the base plate 92 to the convection tube bundle 91.

[0054] Working principle: Welding process; 1. In the initial state, the X-axis sliding component 2 drives the Y-axis sliding component 3 to move along the X direction to both sides of the frame body 1 workstation. The clamping and positioning cylinder 82 in the clamping and positioning component 8 pushes the rotating arm 83, so that the electromagnet 84 at the end of the rotating arm 83 is in place, waiting for the gripping robot to pick up the part. 2. The gripping robot grips the base plate 92 and places it on the support surface of the electromagnet 84. Then, the electromagnet 84 is magnetized to fix the base plate 92. 3. The grabbing robot grabs the convection tube bundle 91 and places it on the two support blocks 11 on the frame body 1 station. The proximity switch 12 detects that the convection tube bundle 91 is in place. 4. When the push-tightening cylinder 61 in the push-tightening assembly 6 is activated, the push-tightening plate 62 pushes the convection tube bundle 91 toward the limit stop 13 and clamps it; When the clamping cylinder 72 in the clamping assembly 7 is activated, the clamping block 74 presses the convection tube bundle 91 onto the support block 11; and the height of the middle section of the convection tube bundle 91 is calculated by the movement data of the second pull rope sensor 73. 5. After the welding robot welds the base plate 92 and the convection tube bundle 91, the electromagnet 84 in the clamping and positioning assembly 8 is demagnetized, and the clamping and positioning cylinder 82 pulls back the rotating arm 83. 6. The gripping robot picks up the upper plate 93 and moves it to the upper side, opposite to the bottom plate 92, as shown. Figure 1 As shown, in the gripping state, the welding robot welds the plate 93 and the convection tube bundle 91, thus completing the welding of the convection tube bundle 91. Testing process; 7. After the welding operation is completed, the X-axis sliding component 2 drives the Y-axis sliding component 3, and the Y-axis sliding component 3 drives the clamping and positioning component 4 to move to the designated position according to the predetermined program; During this process, the positioning baffles 44 in the pressing and positioning components 4 on both sides abut against the two ends of the convection tube bundle 91 in the horizontal direction, and after contact, the X-direction sliding component 2 is stopped by power supply. The movement data of the X-direction servo motor in the X-direction sliding component 2 is used to determine the center distance of the tube ends of the convection tube bundle 91. 8. Then, the clamping and positioning cylinder 42 pushes the pressure plate 43 down, and the pressure plate 43 abuts against both ends of the convection tube bundle 91 in the vertical direction. The height of both ends of the convection tube bundle 91 can be calculated by the movement data of the first pull rope sensor 46. Combined with the height of the middle section of the convection tube bundle 91, the overall flatness of the convection tube bundle 91 can be confirmed. 9. The Y-axis sliding assembly 3 drives the clamping and positioning assembly 4 to reset; the X-axis sliding assemblies 2 on both sides drive the angle detection support 51 below the Y-axis sliding assembly 3 to move to the designated position according to the predetermined program; the angle detection cylinder 52 controls the angle detection plate 54 to fit with the bent sections at both ends of the convection tube bundle 91; the angle sensor 55 determines the bending angle of the bent section of the convection tube bundle 91; at this point, the detection of the convection tube bundle 91 after welding is completed.

[0055] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. Obviously, those skilled in the art can make various modifications and variations to the invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. A working device for inspecting the welding of convection tube bundles, characterized in that, include: Two sets of X-axis sliding components are symmetrically and in the same direction on both sides of the center line of the main frame. Two sets of Y-axis sliding components are respectively vertically fixed to the moving ends of the corresponding X-axis sliding components; a workstation for placing the convection tube bundle is provided on the frame body between the two sets of Y-axis sliding components. Two sets of clamping components are symmetrically fixed at the workstation of the frame body to clamp the middle section of the convection tube bundle in the horizontal direction. Two sets of clamping components are symmetrically fixed at the workstation of the frame body to clamp the middle section of the convection tube bundle in the vertical direction. A clamping and positioning assembly is fixed at the workstation of the frame body; the movable end of the clamping and positioning assembly is used to place the base plate and press the base plate against the lower side of the middle section of the convection tube bundle. Each of the Y-axis sliding components has a fixed pressing and positioning component at its moving end for detecting the position of both ends of the convection tube bundle. Each of the Y-axis sliding components is fixed below an angle detection component for detecting the bending angle at both ends of the convection tube bundle.

2. The convection tube bundle welding inspection device according to claim 1, characterized in that, The angle detection component includes: An angle detection support is fixed to the lower surface of the Y-axis sliding assembly; An angle detection cylinder is fixed on the angle detection support; an adapter is fixed to the moving end of the angle detection cylinder. An angle detection plate is rotatably mounted on the adapter seat and is used to fit against the bent sections at both ends of the convection tube bundle; An angle sensor is fixed on the adapter; the detection end of the angle sensor is connected to the rotating shaft of the angle detection plate. A reset spring is connected between the angle detection plate and the adapter. The angle detection support is also equipped with a photoelectric switch for detecting the position of the convection tube bundle.

3. The convection tube bundle welding inspection device according to claim 1, characterized in that, The clamping and positioning assembly includes: The positioning support is pressed and fixed to the moving end of the Y-axis sliding component; The clamping and positioning cylinder is vertically fixed on the clamping and positioning support; The first pull rope sensor is used to detect the displacement of the moving end of the clamping and positioning cylinder; A pressure plate, fixed to the moving end of the clamping and positioning cylinder, is used to vertically press against the end of the convection tube bundle; A positioning baffle, fixed to the clamping positioning support by an insulating plate, is used to abut the end of the convection tube bundle in the X direction.

4. The convection tube bundle welding inspection device according to claim 1, characterized in that, The clamping assembly includes: The support is tightened by applying pressure to the main frame structure; The clamping cylinder is vertically fixed on the clamping support; The second rope sensor is used to detect the displacement of the moving end of the clamping cylinder; A clamping block, fixed to the moving end of the clamping cylinder, is used to press against the upper side of the middle section of the convection tube bundle in a vertical direction. The frame body is provided with a support block that cooperates with the clamping block and is used to abut against the lower side of the middle section of the convection tube bundle; the support block is provided with a proximity switch for detecting the convection tube bundle.

5. The convection tube bundle welding inspection device according to claim 4, characterized in that: The moving end of the clamping cylinder is fixed with a pull rope bracket that cooperates with the second pull rope sensor; the second pull rope sensor is fixed on the frame body.

6. The convection tube bundle welding inspection device according to claim 1, characterized in that, The pressing assembly includes: Push the cylinder and fix it horizontally to the main frame body; A push plate, fixed to the moving end of the push cylinder, is used to press against the front side of the middle section of the convection tube bundle in the horizontal direction. The frame body is provided with a limiting block that cooperates with the push plate and is used to abut against the rear side of the middle section of the convection tube bundle.

7. The convection tube bundle welding inspection device according to claim 1, characterized in that, The clamping and positioning assembly includes: The clamping and positioning support is fixed to the main frame body; A clamping and positioning cylinder is fixed on the clamping and positioning support; A rotating arm is fixed to the output end of the clamping and positioning cylinder; the output end of the clamping and positioning cylinder is used to drive the rotating arm to rotate. The end of the rotating arm is fixed with an electromagnet for attracting and positioning the base plate; A limiting block is fixed on the main frame body to limit the rotation angle of the rotating arm.

8. The convection tube bundle welding inspection device according to claim 1, characterized in that, Also includes: A gripping robot is used to grip the upper plate and place it on the upper side of the convection tube bundle, opposite to the base plate. A welding robot for welding the base plate and convection tube bundle, and for welding the top plate and convection tube bundle.

9. The convection tube bundle welding inspection device according to claim 1, characterized in that, The X-axis sliding component includes: X-guide rails are fixed to the main frame body; The X-axis slider is slidably mounted on the X-axis guide rail; An X-axis servo motor is fixed on the X-axis slider; a gear is fixed to the output end of the X-axis servo motor. A rack is fixed to the frame body and parallel to the X-guide rail; the gear meshes with the rack. The X-axis sliding assembly also includes an X-axis secondary guide rail fixed to the main frame body and parallel to the X-axis guide rail, on which an X-axis secondary slider is slidably mounted.

10. The convection tube bundle welding inspection device according to claim 9, characterized in that, The Y-axis sliding component includes: The Y-axis support is fixed at both ends to the X-axis slider and the X-axis auxiliary slider, respectively; The Y-axis guide rail is fixed on the Y-axis support; The Y-axis slider is slidably mounted on the Y-axis guide rail; A lead screw is rotatably mounted on the Y-axis support; the lead screw is threadedly connected to the Y-axis slider. A Y-axis servo motor is fixed on the Y-axis support; the output end of the Y-axis servo motor is connected to one end of the lead screw. The clamping and positioning assembly is fixed on the Y-axis slider.

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