Angle-adjustable welding machining device for boiler

Abstract

The invention relates to the technical field of industrial production, and discloses an angle-adjustable welding machining device for a boiler, which comprises a loading plate and a sliding frame connected above the loading plate in a sliding manner, a boiler body is arranged above the loading plate, the sliding frame comprises a positioning assembly, and the positioning assembly comprises a limiting bin, a frame-shaped sliding plate and a second spring. Positioning boxes are symmetrically and slidably connected into the sliding frame, second sliding blocks are slidably connected to the middles of the positioning boxes, first sliding blocks are symmetrically and slidably connected to the upper and lower sides of the positioning boxes with the second sliding blocks as the center, and first rollers are rotatably connected to the ends, close to the furnace body, of the first sliding blocks; a motor is limited through a positioning barrel, the two sides of the furnace body can be evenly clamped in the horizontal direction by moving first rolling wheels at the two positions and judging the vertical state of a frame-shaped sliding plate through a vertical detector, and therefore the stability of the furnace body is guaranteed to the maximum extent when the furnace body is limited; and therefore, a gap between the two furnace bodies after being folded is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of industrial production, in particular to an angle-adjustable welding processing device for a boiler. Background Art

[0002] As an important energy conversion equipment, the safety and stability of the boiler are of vital importance, and welding technology directly affects the structural strength and performance of the boiler. With the development of the power generation equipment manufacturing industry, the requirements for boiler welding technology are getting higher and higher. The problems existing in traditional welding technology are becoming increasingly prominent, such as defects such as porosity and incomplete penetration, which seriously affect the safe operation of the boiler. Therefore, the development of welding processing equipment with adjustable angles and strong adaptability has become the key to improving boiler welding quality and production efficiency.

[0003] During the welding process, the boiler needs to be hoisted by a crane because of its large size, so as to adjust it to a position convenient for welding. It takes a lot of time to adjust the position, resulting in low welding efficiency, which is not conducive to the efficient welding work.

[0004] The boiler is in a split state before welding. During welding, the staff operates the equipment to bend and close it. During the welding process, if the temporary welding points at the joints on the boiler fall off due to high force, the rebounding furnace body will pose a threat to the safety of surrounding workers.

[0005] Therefore, an angle-adjustable welding processing device for a boiler is proposed. Summary of the invention

[0006] The object of the present invention is to provide an angle-adjustable welding processing device for a boiler to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an angle-adjustable welding processing device for a boiler, comprising a loading plate and a sliding frame slidably connected above the loading plate, a furnace body is arranged above the loading plate, the sliding frame comprises a positioning assembly, the positioning assembly comprises a limited position bin, a frame-shaped slide plate and a second spring, a positioning box is symmetrically and slidably connected inside the sliding frame, a second slide block is slidably connected to the middle of the positioning box, a first slide block is symmetrically and slidably connected to the upper and lower sides of the positioning box with the second slide block as the center, a first roller is rotatably connected to one end of the first slide block close to the furnace body, a first spring is fixedly connected between the first slide block and the positioning box, and the limited position bin is fixedly connected to The cam is connected to the locking plate by a spring which is fixedly connected to the locking plate, and the cam is connected to the locking plate by a spring which is fixedly connected to the locking plate.

[0008] Preferably, the sliding frame also includes a lifting and fixing assembly, which includes a round rod, a second gear and a telescopic rod, the top of the inner cavity of the sliding frame is symmetrically fixedly connected with a cylinder, the telescopic ends of the cylinder are fixedly connected with the first splint, the outer wall of the cylinder is sleeved with a fourth spring, the fourth spring is fixedly connected to the top of the inner cavity of the sliding frame and the upper surface of the first splint, a driving turntable is installed on the top of the sliding frame, the inner rotation connection of the driving turntable is connected with a screw rod, the bottom of the screw rod is fixedly connected with a round rod, the outer wall of the round rod is symmetrically provided with a rack, the upper surface of the first splint is symmetrically rotationally connected with a second gear meshing with the rack, the bottom of the round rod is fixedly connected with the second splint, the inner sliding connection of the second splint is a trapezoidal block, the trapezoidal block and the inner part of the second splint are fixedly connected with a fifth spring, the inner part of the first splint is symmetrically slidingly connected with the telescopic rod, the first splint is fixedly connected with a ventilation pipe, and the inner part of the second splint is symmetrically rotationally connected with an electric drive wheel.

[0009] Preferably, a welding machine is fixedly connected to the upper surface of the loading plate, rollers are rotatably connected to the middle portion of the loading plate in a linear array, an auxiliary moving component is provided inside the loading plate, shafts are symmetrically rotatably connected to the two sides of the upper surface of the loading plate, a gear shaft is driven to rotate inside the shaft shaft, a toothed belt is meshed on the outer wall of the gear shaft, and a first gear is fixedly connected to one end of the shaft rod located outside the loading plate.

[0010] Preferably, the auxiliary moving assembly also includes a transverse plate, a tooth plate and a special-shaped sliding rod, the transverse plate is slidably connected to the side wall of the loading plate, the tooth plate is symmetrically fixedly connected to both sides of the upper surface of the transverse plate, the middle part of the transverse plate is slidably connected to a pedal, a sixth spring is fixedly connected between the pedal and the transverse plate, an air guide groove is opened inside the transverse plate, a side of the air guide groove close to the loading plate is slidably connected to the special-shaped sliding rod, and pins are slidably connected inside the transverse plate and on both sides of the special-shaped sliding rod.

[0011] Preferably, the recessed center of the positioning barrel is horizontal with the height of the limiting bin, the first sliding block and the frame-shaped sliding block are perpendicular to each other, a controller is arranged inside the sliding frame, the controller is electrically connected to the vertical detector, and the controller is electrically connected to the motor.

[0012] Preferably, an annular plate is provided on the top of the trapezoidal block, an air vent hole with a diameter equal to that of the trapezoidal block is provided inside the second splint, an air chamber is provided inside the first splint, the telescopic rod is slidably connected to the air chamber of the first splint, the ventilation pipe is fixedly connected to the air vent hole of the second splint and the air chamber of the first splint, and the telescopic rod is engaged with the second gear when extended.

[0013] Preferably, the first gear is meshed with the toothed plate, an air storage chamber is provided in the middle of the transverse plate and below the pedal, the air storage chamber forms a closed space inside the transverse plate, and the air guide groove is communicated with the air storage chamber.

[0014] Preferably, the middle portion of the special-shaped slide bar is concave, the latch is fitted to the non-concave portion of the outer wall of the special-shaped slide bar, the magnetic poles of the special-shaped slide bar and the latch are opposite, and the diameter of the special-shaped slide bar is equal to that of the air guide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The motor is limited by the positioning barrel. By moving the first rollers at two locations and determining the vertical state of the frame slide by the vertical detector, the positioning barrel can evenly clamp both sides of the furnace body in the horizontal direction, thereby maximally ensuring the stability of the furnace body when the furnace body is limited, thereby reducing the gap between the two furnace bodies after closing, and ensuring efficient welding.

[0017] 2. After the telescopic rod is pushed out, it engages with the second gear, thereby fixing the position of the first clamping plate, so that the first clamping plate and the second clamping plate are stable and do not shake during the process of clamping the furnace body. When the furnace body needs to be turned over to adjust the welding angle, the staff controls the electric drive wheel to rotate inside the second clamping plate, thereby driving the furnace body to rotate and adjust the orientation to facilitate welding work at different points.

[0018] 3. The two furnace bodies are initially closed by setting the shafts on both sides, and the staff controls the rotation of the gear shaft to make the toothed belt drive the furnace body to move above the loading plate, so that when welding the furnace body, the furnace body can be easily moved and adjusted to achieve the purpose of rapid welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a partial schematic diagram of the overall structure of the present invention;

[0021] Figure 3 It is a partial schematic diagram of the loading plate structure of the present invention;

[0022] Figure 4 This is an exploded schematic diagram of the auxiliary moving component structure of the present invention;

[0023] Figure 5 It is a partial schematic diagram of the horizontal plate structure of the present invention;

[0024] Figure 6 It is a cross-sectional schematic diagram of the horizontal plate structure of the present invention;

[0025] Figure 7 It is a schematic cross-sectional view of the positioning assembly structure of the present invention;

[0026] Figure 8 It is a partial schematic diagram of the structure of the lifting and fixing assembly of the present invention;

[0027] Fig. 9 It is a schematic transverse cross-sectional view of the structure of the hoisting and fixing assembly of the present invention;

[0028] Fig.10 It is a schematic longitudinal cross-sectional view of the lifting and fixing assembly structure of the present invention.

[0029] In the figure:

[0030] 1. Loading plate; 2. Welding machine; 3. Sliding rack; 4. Motor; 5. Furnace body;

[0031] 11. Auxiliary moving assembly; 111. Shaft; 112. First gear; 113. Gear shaft; 114. Toothed belt; 115. Cross plate; 116. Gear plate; 117. Pedal; 118. Sixth spring; 119. Air guide groove; 1110. Special-shaped slide bar; 1111. Latch;

[0032] 31. Positioning assembly; 311. Positioning box; 312. First slider; 313. First spring; 314. First roller; 315. Second slider; 316. Positioning bin; 317. Frame slide; 318. Second spring; 319. Third spring; 3110. Vertical detector; 3111. First support plate; 3112. Second support plate; 3113. Positioning barrel;

[0033] 32. Lifting and fixing assembly; 321. Cylinder; 322. Fourth spring; 323. First clamping plate; 324. Driving turntable; 325. Screw rod; 326. Round rod; 327. Rack; 328. Second gear; 329. Second clamping plate; 3210. Trapezoidal block; 3211. Fifth spring; 3212. Ventilation pipe; 3213. Telescopic rod; 3214. Electric drive wheel. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiments of the present invention

[0036] See also Figure 1 , Figure 2 and Figure 7, a welding processing device with adjustable angle for boiler, comprising a loading plate 1 and a sliding frame 3 slidably connected above the loading plate 1, a furnace body 5 is arranged above the loading plate 1, the sliding frame 3 comprises a positioning assembly 31, the positioning assembly 31 comprises a limited position bin 316, a frame-shaped slide plate 317 and a second spring 318, a positioning box 311 is symmetrically slidably connected inside the sliding frame 3, a second slider 315 is slidably connected to the middle of the positioning box 311, a first slider 312 is symmetrically slidably connected to the upper and lower sides of the positioning box 311 with the second slider 315 as the center, a first slider 312 is rotatably connected to one end of the first slider 312 close to the furnace body 5, a first spring 313 is fixedly connected between the first slider 312 and the positioning box 311, a limited position bin 316 is fixedly connected to the middle of the outer wall of the positioning box 311, a frame-shaped slide plate 317 is slidably connected inside the limited position bin 316, and a fixed position is provided between the upper and lower sides of the frame-shaped slide plate 317 and the first slider 312 A second spring 318 is connected, a vertical detector 3110 is installed inside the frame-type skateboard 317, a third spring 319 is fixedly connected between one end of the second slider 315 close to the limit bin 316 and the limit bin 316, the top of the positioning box 311 is fixedly connected to the first support plate 3111, the top of the sliding frame 3 is fixedly connected to the motor 4, the telescopic end of the motor 4 is fixedly connected to the second support plate 3112, the top of the first support plate 3111 is fixedly connected to the lower surface of the second support plate 3112, the side wall of the sliding frame 3 is symmetrically slidably connected with the positioning barrels 3113, the positioning barrels 3113 are fixedly connected to the bottom of the first support plate 3111, the recessed center of the positioning barrel 3113 is horizontal with the height of the limit bin 316, the first slider 312 and the frame-type skateboard 317 are perpendicular to each other, and a controller is arranged inside the sliding frame 3, the controller is electrically connected to the vertical detector 3110, and the controller is electrically connected to the motor 4.

[0037] When the embodiment of the present invention is actually used:

[0038] When in use, the staff will assemble the furnace body 5 and place it above the loading plate 1, and then the staff will control the motor 4 to extend. During the movement, the motor 4 will drive the second support plate 3112 and the first support plate 3111 to move upward together. During the upward movement of the first support plate 3111, the positioning box 311 will be driven to move upward together. The upward movement of the positioning box 311 will drive the second slider 315 and the first roller 314 to roll on the outer wall of the motor 4. When the symmetrical first roller 314 rolls on the outer wall of the motor 4, the arc surface of the outer wall of the motor 4 will cause the first roller 314 to move toward the direction of the limit bin 316. Extrusion, at this time, because the two first sliders 312 are symmetrically arranged above and below the second slider 315, when the second slider 315 is horizontal with the axis of the motor 4, the first rollers 314 at the two locations are squeezed by the motor 4 to the same extent, and when the two first rollers 314 move to the same extent, the frame-shaped slide plate 317 flexibly connected between the two first sliders 312 by the second spring 318 will be in a vertical state. When the frame-shaped slide plate 317 is in a vertical state, the vertical detector 3110 detects the state of the frame-shaped slide plate 317 and sends a signal to the motor 4, so that the motor 4 stops extending when the limit bin 316 and the axis of the furnace body 5 are horizontal;

[0039] At this time, because the positioning box 311 and the positioning barrel 3113 are fixedly connected by the first support plate 3111, the recessed center of the positioning barrel 3113 is level with the height of the second slider 315, the positioning barrel 3113 will move with the positioning box 311 when it moves, so that the motor 4 is limited by the positioning barrel 3113, and the positioning barrel 3113 is able to clamp both sides of the furnace body 5 evenly in the horizontal direction by moving the first rollers 314 at two locations and determining the vertical state of the frame slide 317 by the vertical detector 3110, so as to maximize the stability of the furnace body 5 when the furnace body 5 is limited, thereby reducing the gap between the two furnace bodies 5 after they are closed, and ensuring efficient welding.

[0040] See also Figure 1 , Figures 8 to 10The sliding frame 3 also includes a lifting and fixing component 32, which includes a round rod 326, a second gear 328 and a telescopic rod 3213. The top of the inner cavity of the sliding frame 3 is symmetrically fixedly connected with a cylinder 321, and the telescopic ends of the cylinder 321 are fixedly connected with a first clamping plate 323. The outer wall of the cylinder 321 is sleeved with a fourth spring 322, and the fourth spring 322 is fixedly connected to the top of the inner cavity of the sliding frame 3 and the upper surface of the first clamping plate 323. A driving turntable 324 is installed on the top of the sliding frame 3, and the internal rotation of the driving turntable 324 is connected with a screw rod 325. The bottom of the screw rod 325 is fixedly connected with a round rod 326, and the outer wall of the round rod 326 is symmetrically provided with a rack 327. The upper surface of the first clamping plate 323 is symmetrically rotatably connected with a second gear 328 meshing with the rack 327, and the bottom of the round rod 326 is fixedly connected with a second clamping plate 329 The second splint 329 is slidably connected to a trapezoidal block 3210, a fifth spring 3211 is fixedly connected between the trapezoidal block 3210 and the second splint 329, a telescopic rod 3213 is symmetrically slidably connected to the first splint 323, a ventilation pipe 3212 is fixedly connected between the first splint 323 and the second splint 329, an electric drive wheel 3214 is symmetrically rotatably connected to the second splint 329, an annular plate is provided on the top of the trapezoidal block 3210, a ventilation hole with the same diameter as the trapezoidal block 3210 is opened inside the second splint 329, an air chamber is opened inside the first splint 323, the telescopic rod 3213 is slidably connected to the air chamber of the first splint 323, the ventilation pipe 3212 is fixedly connected to the ventilation hole of the second splint 329 and the air chamber of the first splint 323, and the telescopic rod 3213 is engaged with the second gear 328 when extended.

[0041] When the embodiment of the present invention is actually used:

[0042] After the two furnace bodies 5 are clamped and closed by the positioning barrel 3113 and the first roller 314, the staff will push the furnace body 5 between the first clamping plate 323 and the second clamping plate 329. During the movement, the furnace body 5 will form an upward extrusion on the first clamping plate 323. When the outer wall of the furnace body 5 is in contact with the lower surface of the first clamping plate 323, the staff will control the driving turntable 324 to start rotating. The driving turntable 324 rotates to drive the screw rod 325 to slide upward. The screw rod 325 moves to drive the round rod 326 to slide through the inside of the first clamping plate 323. The round rod 326 moves upward to drive the second clamping plate 329 to move upward together. After the second clamping plate 329 moves upward to fit the inner cavity of the furnace body 5, the staff will control the driving turntable 324 to stop rotating and make the furnace body 5 move deeper into the first clamping plate 323 and the second clamping plate 329. The process of the furnace body 5 moving into the first clamping plate 323 and the second clamping plate 329 The fifth spring 3211 is elastically stretched when the trapezoidal block 3210 is pushed. When the trapezoidal block 3210 slides into the air hole, the air inside the air hole is pushed into the air pipe 3212 by the trapezoidal block 3210 and transmitted to the inside of the air chamber of the first clamping plate 323 through the air pipe 3212. After the air chamber inside the first clamping plate 323 is inflated, the telescopic rod 3213 is pushed out. After being pushed out, the telescopic rod 3213 engages with the second gear 328, thereby fixing the position of the first clamping plate 323, so that the first clamping plate 323 and the second clamping plate 329 are stable and do not shake during the process of clamping the furnace body 5. When the furnace body 5 needs to be flipped to adjust the welding angle, the staff controls the electric drive wheel 3214 to rotate inside the second clamping plate 329, thereby driving the furnace body 5 to rotate and adjust the orientation to facilitate welding work at different points.

[0043] See also Figures 3 to 6The middle part of the loading plate 1 is distributed in a linear array and is rotatably connected to rollers. An auxiliary moving assembly 11 is arranged inside the loading plate 1. The two sides of the upper surface of the loading plate 1 are symmetrically rotatably connected to shaft rods 111. The inside of the shaft rod 111 is driven to rotate and is connected to a gear shaft 113. The outer wall of the gear shaft 113 is meshed with a toothed belt 114. One end of the shaft rod 111 located outside the loading plate 1 is fixedly connected to a first gear 112. The auxiliary moving assembly 11 also includes a cross plate 115, a tooth plate 116 and a special-shaped sliding rod 1110. The cross plate 115 is slidably connected to the side wall of the loading plate 1. The tooth plate 116 is symmetrically fixedly connected to the two sides of the upper surface of the cross plate 115. A pedal 117 is slidably connected to the middle part of the cross plate 115. The pedal 117 and the cross plate 115 are fixedly connected. A sixth spring 118 is connected, an air guide groove 119 is provided inside the transverse plate 115, a special-shaped slide bar 1110 is slidably connected to the air guide groove 119 on one side close to the loading plate 1, latches 1111 are slidably connected to the inside of the transverse plate 115 and on both sides of the special-shaped slide bar 1110, the first gear 112 is meshed with the toothed plate 116, an air storage chamber is provided in the middle of the transverse plate 115 and below the pedal 117, the air storage chamber forms a closed space inside the transverse plate 115, the air guide groove 119 is communicated with the air storage chamber, the middle part of the special-shaped slide bar 1110 is concave, the latch 1111 is fitted to the non-concave part of the outer wall of the special-shaped slide bar 1110, the special-shaped slide bar 1110 and the latch 1111 have opposite magnetic poles, and the diameter of the special-shaped slide bar 1110 is equal to that of the air guide groove 119.

[0044] When the embodiment of the present invention is actually used:

[0045] After the furnace body 5 to be welded is placed on the loading plate 1, the staff will close the position of the furnace body 5 to be welded and place it on the loading plate 1, and then the staff will step on the pedal 117 downwards. After the pedal 117 is stepped on, the air inside the air storage compartment enters the inside of the air guide groove 119, and the internal air pressure of the air guide groove 119 increases and pushes the special-shaped slide bar 1110 to slide inside it. After the special-shaped slide bar 1110 slides, the concave part in the middle of the special-shaped slide bar 1110 is aligned with the latch 1111. The latch 1111 slides to the inside of the cross plate 115 under the magnetic adsorption of the special-shaped slide bar 1110. After the latch 1111 is received in the cross plate 115, it is no longer engaged with the inner cavity of the loading plate 1, so that the cross plate 115 can When the toothed plate 116 moves downward, it meshes with the first gear 112 and drives the shaft 111 to rotate. The shaft 111 rotates and drives the gear shaft 113 and the toothed belt 114 to rotate together. When the toothed belt 114 rotates to fit the outer wall of the furnace body 5, the two furnace bodies 5 are initially closed by the setting of the shafts 111 on both sides. The staff controls the gear shaft 113 to rotate so that the toothed belt 114 drives the furnace body 5 to move above the loading plate 1, so that when the furnace body 5 is welded, the furnace body 5 is easy to move and adjust the position, thereby achieving the purpose of fast welding.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An angle-adjustable welding processing device for a boiler, comprising a loading plate (1) and a sliding frame (3) slidably connected above the loading plate (1), characterized in that: A furnace body (5) is arranged above the loading plate (1); the sliding frame (3) comprises a positioning assembly (31); the positioning assembly (31) comprises a limiting position bin (316), a frame-shaped slide plate (317) and a second spring (318); a positioning box (311) is symmetrically slidably connected inside the sliding frame (3); a second slider (315) is slidably connected in the middle of the positioning box (311); a first slider (312) is symmetrically slidably connected at the upper and lower sides of the positioning box (311) with the second slider (315) as the center; a first roller (314) is rotatably connected at one end of the first slider (312) close to the furnace body (5); a first spring (313) is fixedly connected between the first slider (312) and the positioning box (311); the limiting position bin (316) is fixedly connected to the middle of the outer wall of the positioning box (311); a frame-shaped slide plate (317) is slidably connected in the middle of the positioning box (311); 17), a second spring (318) is fixedly connected between the upper and lower sides of the frame-shaped slide plate (317) and the first slide block (312), a vertical detector (3110) is installed inside the frame-shaped slide plate (317), a third spring (319) is fixedly connected between one end of the second slide block (315) close to the limit bin (316) and the limit bin (316), the top of the positioning box (311) is fixedly connected to the first support plate (3111), the top of the sliding frame (3) is fixedly connected to the motor (4), the telescopic end of the motor (4) is fixedly connected to the second support plate (3112), the top of the first support plate (3111) is fixedly connected to the lower surface of the second support plate (3112), the side wall of the sliding frame (3) is symmetrically slidably connected to the positioning barrel (3113), and the positioning barrel (3113) is fixedly connected to the bottom of the first support plate (3111).

2. The angle-adjustable welding device for a boiler according to claim 1, characterized in that: The sliding frame (3) also includes a lifting and fixing component (32), which includes a round rod (326), a second gear (328) and a telescopic rod (3213). The top of the inner cavity of the sliding frame (3) is symmetrically fixedly connected to a cylinder (321), and the telescopic ends of the cylinder (321) are fixedly connected to a first clamping plate (323). The outer wall of the cylinder (321) is sleeved with a fourth spring (322), and the fourth spring (322) is fixedly connected to the top of the inner cavity of the sliding frame (3) and the upper surface of the first clamping plate (323). A driving turntable (324) is installed on the top of the sliding frame (3), and the inner part of the driving turntable (324) is rotatably connected to a screw rod (325), and the bottom of the screw rod (325) is fixedly connected to a round rod (326). The outer wall of the round rod (326) is symmetrically provided with a rack (327); the upper surface of the first clamping plate (323) is symmetrically rotatably connected to a second gear (328) meshing with the rack (327); the bottom of the round rod (326) is fixedly connected to a second clamping plate (329); the interior of the second clamping plate (329) is slidably connected to a trapezoidal block (3210); a fifth spring (3211) is fixedly connected between the trapezoidal block (3210) and the interior of the second clamping plate (329); the interior of the first clamping plate (323) is symmetrically slidably connected to a telescopic rod (3213); a ventilation pipe (3212) is fixedly connected between the first clamping plate (323) and the second clamping plate (329); and the interior of the second clamping plate (329) is symmetrically rotatably connected to an electric drive wheel (3214).

3. The angle-adjustable welding device for a boiler according to claim 1, characterized in that: The upper surface of the loading plate (1) is fixedly connected to a welding machine (2); the middle part of the loading plate (1) is rotatably connected to rollers distributed in a linear array; an auxiliary moving assembly (11) is arranged inside the loading plate (1); shafts (111) are symmetrically rotatably connected to the two sides of the upper surface of the loading plate (1); a gear shaft (113) is driven to rotate inside the shaft shaft (111); a toothed belt (114) is meshed on the outer wall of the gear shaft (113); and a first gear (112) is fixedly connected to one end of the shaft shaft (111) located outside the loading plate (1).

4. The angle-adjustable welding device for a boiler according to claim 3, characterized in that: The auxiliary moving assembly (11) also includes a transverse plate (115), a tooth plate (116) and a special-shaped slide bar (1110); the transverse plate (115) is slidably connected to the side wall of the loading plate (1); the tooth plate (116) is symmetrically fixedly connected to the two sides of the upper surface of the transverse plate (115); a pedal (117) is slidably connected to the middle of the transverse plate (115); a sixth spring (118) is fixedly connected between the pedal (117) and the transverse plate (115); an air guide groove (119) is provided inside the transverse plate (115); a special-shaped slide bar (1110) is slidably connected to the side of the air guide groove (119) close to the loading plate (1); and latches (1111) are slidably connected inside the transverse plate (115) and on both sides of the special-shaped slide bar (1110).

5. The angle-adjustable welding device for a boiler according to claim 1, characterized in that: The center of the depression of the positioning barrel (3113) is horizontal with the height of the limiting bin (316); the first slider (312) and the frame-shaped slider (317) are perpendicular to each other; a controller is provided inside the sliding frame (3); the controller is electrically connected to the vertical detector (3110); and the controller is electrically connected to the motor (4).

6. The angle-adjustable welding device for a boiler according to claim 2, characterized in that: An annular plate is provided on the top of the trapezoidal block (3210), a ventilation hole with a diameter equal to that of the trapezoidal block (3210) is provided inside the second clamping plate (329), an air chamber is provided inside the first clamping plate (323), the telescopic rod (3213) is slidably connected to the inside of the air chamber of the first clamping plate (323), the ventilation pipe (3212) is fixedly connected to the ventilation hole of the second clamping plate (329) and the air chamber of the first clamping plate (323), and the telescopic rod (3213) is engaged with the second gear (328) when extended.

7. The angle-adjustable welding device for a boiler according to claim 4, characterized in that: The first gear (112) is meshed with the toothed plate (116); an air storage chamber is provided in the middle of the transverse plate (115) and below the pedal (117); the air storage chamber forms a closed space inside the transverse plate (115); and the air guide groove (119) is in communication with the air storage chamber.

8. The angle-adjustable welding device for a boiler according to claim 4, characterized in that: The middle part of the special-shaped slide bar (1110) is concave, and the latch (1111) is fitted to the non-concave part of the outer wall of the special-shaped slide bar (1110). The magnetic poles of the special-shaped slide bar (1110) and the latch (1111) are opposite, and the diameter of the special-shaped slide bar (1110) is equal to that of the air guide groove (119).

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