A welding device for the shell of a heat exchanger

Abstract

The present invention discloses a welding device for a heat exchanger housing, belonging to the technical field of heat exchanger welding. It includes a base device which is used to drive the heat exchanger housing and the flange to move. A clamping device and two welding devices are arranged on the base device. The clamping device is used to clamp heat exchanger housings and flanges of various sizes and drive the heat exchanger housing to rotate during welding to cooperate with the welding. The welding device is used to weld the heat exchanger housing and the flange. The base device provided by the present invention can change the position of the clamping device according to the heat exchanger housing of different lengths, so as to cooperate with the clamping device to clamp heat exchanger housings of different sizes, with wide adaptability. The clamping device can clamp the heat exchanger housing and the flange to be welded, and when the clamping device reaches the welding device, the clamping device can drive the heat exchanger housing and the flange to rotate together, cooperating with the welding device to weld a whole circle of welds of the heat exchanger housing and the flange, with good welding effect.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchanger welding, and particularly relates to a welding device for a heat exchanger housing. Background Art

[0002] A heat exchanger is a device used to transfer heat between two or more fluids. They play an important role in many applications such as industry, energy, chemical engineering, heating, ventilation, and air conditioning. Heat exchangers achieve heat transfer through the principle of heat conduction. Inside the heat exchanger, two fluids at different temperatures come into contact through different channels or surfaces, causing heat to transfer from the high-temperature fluid to the low-temperature fluid. The connection between the heat exchanger and the pipeline is usually through flange connection. Before use, the heat exchanger housing needs to be welded to the flange. The clamping reliability of the heat exchanger housing welding device in the prior art for the heat exchanger housing and the flange is generally average. At the same time, it cannot adapt to the welding of heat exchanger housings of different sizes during welding, and during welding, the welding gun moves around the heat exchanger housing, resulting in poor welding quality. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a welding device for a heat exchanger housing, including a base device. The base device includes a base and a forward sliding column. The base device is used to drive the heat exchanger housing and the flange to move. A clamping device and two welding devices are arranged on the base device. The clamping device includes a sliding frame, and the sliding frame is slidably installed on the forward sliding column. The clamping device is used to clamp heat exchanger housings and flanges of various sizes and drive the heat exchanger housing to rotate during welding to cooperate with welding. The welding device includes a welding frame, and the welding frame is fixedly installed on the base. The welding device is used to weld the heat exchanger housing and the flange.

[0004] Further, the base device includes a cross column fixedly installed on the base. A cross guide rail is fixedly installed on the cross column. A sliding groove is arranged on the cross guide rail. A rotating motor is fixedly installed on the cross column. A motor wheel is fixedly installed on the motor shaft of the rotating motor. An upper transmission wheel is fixedly installed on the cross guide rail. An upper transmission belt is wound around the upper transmission wheel and the motor wheel.

[0005] Further, an adjustment mechanism is arranged on the cross column. The adjustment mechanism includes an adjustment slider slidably installed on the cross column. A forward sliding column is fixedly installed on the adjustment slider. The forward sliding column is slidably installed with the cross guide rail. An adjustment electric cylinder is fixedly installed on the cross column. The top of the adjustment electric cylinder is fixedly installed with the adjustment slider. A lead screw is rotatably installed inside the forward sliding column. A lead screw bevel gear is fixedly installed on the lead screw. A sliding bevel gear is rotatably installed on the forward sliding column. The sliding bevel gear slides in the sliding groove. A jacking frame is fixedly installed on the forward sliding column.

[0006] Further, a synchronization mechanism is provided on the adjusting slider. The synchronization mechanism includes a bottom rack fixedly installed below the adjusting slider. A synchronization drive wheel is rotatably installed at the bottom of the cross-column. A synchronization gear is fixedly installed on the synchronization drive wheel. The synchronization gear meshes with the bottom rack. A synchronization drive belt is wound around the synchronization drive wheel.

[0007] The telescopic movement of the adjusting electric cylinder can drive the adjusting slider to slide along the cross-column, thereby driving the forward sliding column to slide along the transverse guide rail. The sliding bevel gear slides in the chute, thereby adjusting the inner and outer positions of the forward sliding column, and thus adjusting the inner and outer positions of the clamping device to adapt to the welding of heat exchanger shells of different lengths and also facilitating the placement of the heat exchanger shell. The sliding of the adjusting slider drives the bottom rack to slide, thereby driving the synchronization gear and the synchronization drive wheel to rotate, driving the two adjusting sliders on the same cross-column to move outward or inward simultaneously, and driving the adjusting slider on the other side to move inward or outward synchronously through the synchronization drive wheel, so as to realize the synchronous movement of the four adjusting sliders and make the two forward sliding columns move synchronously and parallelly inward and outward.

[0008] The rotation of the rotating motor drives the motor wheel to rotate, drives the upper transmission wheel and the transverse guide rail to rotate through the upper transmission belt, thereby driving the sliding bevel gear to rotate, driving the lead screw bevel gear and the lead screw to rotate, and further driving the sliding frame to slide along the forward sliding column through the internal thread block.

[0009] Further, the clamping device includes an internal thread block fixedly installed in the sliding frame. The internal thread block forms a threaded drive with the lead screw. A side motor is fixedly installed on the sliding frame. A motor bevel gear is fixedly installed on the motor shaft of the side motor. A fixed seat is fixedly installed on the sliding frame. A rotating cylinder is rotatably installed in the fixed seat. A rotating gear is fixedly installed on the rotating cylinder. A double lead screw shaft is rotatably installed in the rotating cylinder. Both ends of the double lead screw shaft are provided with threads with opposite thread directions. A rotating bevel gear is fixedly installed on the double lead screw shaft. The rotating bevel gear meshes with the motor bevel gear. Two internal thread rings are slidably installed in the rotating cylinder. The internal thread rings respectively form a threaded drive with the two lead screws at both ends of the double lead screw shaft. Three support connecting rods are rotatably installed on the internal thread rings. The support connecting rods are slidably installed in the long slots on the rotating cylinder. A support tightening plate is rotatably installed on the support connecting rods. A heat exchanger shell and two flanges are placed outside the support tightening plate.

[0010] Further, a tooth-locking mechanism is provided on the fixed seat. The tooth-locking mechanism includes a guide post fixedly installed on the fixed seat. A lifting clamping plate is slidably installed on the guide post. A guide post spring is provided between the lifting clamping plate and the guide post. A clamping rack is fixedly installed on the lifting clamping plate. The clamping rack meshes with the rotating gear.

[0011] When the sliding frame moves to the outside following the forward sliding column, at this time, place the heat exchanger housing and the two flanges on the tightening plate. The heat exchanger housing and the two flanges are in close contact. Subsequently, the forward sliding column retracts. At this time, the clamping rack meshes with the rotating gear, and the rotating gear and the rotating cylinder cannot rotate. The side motor rotates to drive the motor bevel gear to rotate, thereby driving the rotating bevel gear and the double lead screw shaft to rotate, thereby driving the two internal thread rings to slide along the rotating cylinder in opposite directions, thereby driving the support connecting rod to rotate, thereby driving the tightening plate to open outwards. Clamp the heat exchanger housing and the flange through the tightening plate. When the sliding frame and the internal thread block move along the forward sliding column to the jacking frame, the jacking frame jacks up the lifting clamping plate along the guide post, and the guide post spring is compressed, causing the clamping rack to disengage from the rotating gear. At this time, the weld of the heat exchanger housing and the flange contacts the welding torch. At this time, the side motor rotates to drive the double lead screw shaft to rotate. Since the tightening plate has tightened the heat exchanger housing and the flange, when the double lead screw shaft continues to rotate at this time, it will drive the internal thread ring, the support connecting rod and the tightening plate to rotate together, thereby driving the heat exchanger housing and the flange to rotate together through the tightening plate, and cooperate with the welding torch to weld the heat exchanger housing and the flange for a full circle.

[0012] Further, the welding device includes a transverse moving column fixedly installed on the welding frame. An adjusting screw rod is rotatably installed on the welding frame. An adjusting knob is fixedly installed on the adjusting screw rod. A guide sleeve is slidably installed on the transverse moving column. An adjusting seat is fixedly installed on the guide sleeve. A welding torch is fixedly installed on the adjusting seat.

[0013] Further, a coarse adjustment mechanism is provided on the adjusting seat. The coarse adjustment mechanism includes a clamping column slidably installed on the adjusting seat. A clamping column spring and an internal thread clamp are fixedly installed on the clamping column. An internal thread is provided on the internal thread clamp. A pulling block is provided between the clamping column spring and the adjusting seat. The internal thread clamp and the adjusting screw rod form a screw drive.

[0014] First, pull out the clamping column spring, thereby driving the clamping column and the internal thread clamp to slide outwards. The pulling block is stretched. At this time, the internal thread clamp disengages from the adjusting screw rod. At this time, manually move the adjusting seat to slide along the transverse moving column to roughly adjust the position of the adjusting seat first. Subsequently, release the clamping column spring, and the pulling block rebounds, causing the internal thread clamp to start cooperating with the adjusting screw rod. At this time, twisting the adjusting knob can drive the adjusting screw rod to rotate, thereby driving the internal thread clamp and the adjusting seat to move along the guide sleeve through the adjusting screw rod to finely adjust the position of the adjusting seat.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: (1) The base device provided by the present invention can change the internal and external positions of the clamping device according to the heat exchanger shells of different lengths, so as to cooperate with the clamping device to clamp the heat exchanger shells of different sizes, with good clamping effect and wide adaptability; (2) The clamping device provided by the present invention can clamp the heat exchanger shell and the flange to be welded, and when the clamping device reaches the welding device, the clamping device can drive the heat exchanger shell and the flange to rotate together, and cooperate with the welding device to realize the welding of a whole circle of welds of the heat exchanger shell and the flange, with high automation degree and good welding effect; (3) The welding device provided by the present invention can adjust the position of the welding torch in two ways: coarse adjustment and fine adjustment, which is convenient for adjustment, has high adjustment accuracy, and effectively improves the alignment accuracy of the welding torch and the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention (clamping state).

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention (welding state).

[0018] Figure 3 It is a schematic diagram of the structure of the base device of the present invention Figure 1 .

[0019] Figure 4 It is a schematic diagram of the structure of the base device of the present invention Figure 2 .

[0020] Figure 5 It is a schematic diagram of the structure of the base device of the present invention Figure 3 .

[0021] Figure 6 It is a schematic diagram of the cooperation between the jacking frame and the lifting clamping plate of the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the clamping device of the present invention Figure 1 .

[0023] Figure 8 It is a schematic diagram of the structure of the clamping device of the present invention Figure 2 .

[0024] Figure 9 It is a schematic diagram of the structure of the clamping device of the present invention Figure 3 .

[0025] Figure 10 It is a schematic diagram of the cooperation between the internal thread block and the sliding frame of the present invention.

[0026] Figure 11 It is a schematic diagram of the structure of the welding device of the present invention Figure 1 .

[0027] Figure 12 Structural Schematic of the Welding Device of the Present Invention Figure 2 。

[0028] Reference Numerals in the Attached Drawings: 101 - Base; 102 - Cross Column; 103 - Cross Guide Rail; 104 - Slide Groove; 105 - Forward Slide Post; 106 - Jacking Frame; 107 - Adjusting Slide Block; 108 - Adjusting Electric Cylinder; 109 - Rotating Motor; 110 - Motor Wheel; 111 - Upper Driving Wheel; 112 - Upper Driving Belt; 113 - Sliding Bevel Gear; 114 - Lead Screw; 115 - Lead Screw Bevel Gear; 116 - Bottom Rack; 117 - Synchronous Gear; 118 - Synchronous Driving Wheel; 119 - Synchronous Driving Belt; 201 - Sliding Frame; 202 - Internal Thread Block; 203 - Side Motor; 204 - Motor Bevel Gear; 205 - Rotating Bevel Gear; 206 - Fixed Seat; 207 - Rotating Cylinder; 208 - Guide Post; 209 - Guide Post Spring; 210 - Lifting Clamping Plate; 211 - Clamping Rack; 212 - Rotating Gear; 213 - Heat Exchanger Shell; 214 - Flange; 215 - Tightening Plate; 216 - Tightening Link Rod; 217 - Internal Thread Ring; 218 - Double Lead Screw Shaft; 301 - Welding Frame; 302 - Transverse Moving Post; 303 - Adjusting Lead Screw; 304 - Adjusting Knob; 305 - Adjusting Seat; 306 - Guide Sleeve; 307 - Welding Torch; 308 - Internal Thread Clamp; 309 - Clamping Post; 310 - Clamping Post Spring; 311 - Pulling Block. Specific Embodiments

[0029] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings.

[0030] Embodiment: Refer to Figures 1 - 12 , a welding device for a heat exchanger shell, including a base device. The base device includes a base 101 and a forward slide post 105. The base device is used to drive the heat exchanger shell and the flange to move. A clamping device and two welding devices are provided on the base device. The clamping device includes a sliding frame 201. The sliding frame 201 is slidably installed on the forward slide post 105. The clamping device is used to clamp heat exchanger shells and flanges of various sizes and drive the heat exchanger shell to rotate during welding to cooperate with welding. The welding device includes a welding frame 301. The welding frame 301 is fixedly installed on the base 101. The welding device is used to weld the heat exchanger shell and the flange.

[0031] As Figures 3 - 6 shown, the base device includes a cross column 102 fixedly installed on the base 101. A cross guide rail 103 is fixedly installed on the cross column 102. A slide groove 104 is provided on the cross guide rail 103. A rotating motor 109 is fixedly installed on the cross column 102. A motor wheel 110 is fixedly installed on the motor shaft of the rotating motor 109. An upper driving wheel 111 is fixedly installed on the cross guide rail 103. An upper driving belt 112 is wound around the upper driving wheel 111 and the motor wheel 110.

[0032] As shown Figures 3 - 6 in the figure, an adjusting mechanism is provided on the cross column 102. The adjusting mechanism includes an adjusting slider 107 slidably mounted on the cross column 102. A forward sliding column 105 is fixedly mounted on the adjusting slider 107. The forward sliding column 105 is slidably mounted with the horizontal guide rail 103. An adjusting electric cylinder 108 is fixedly mounted on the cross column 102. The top of the adjusting electric cylinder 108 is fixedly mounted with the adjusting slider 107. A lead screw 114 is rotatably mounted in the forward sliding column 105. A lead screw bevel gear 115 is fixedly mounted on the lead screw 114. A sliding bevel gear 113 is rotatably mounted on the forward sliding column 105. The sliding bevel gear 113 slides in the chute 104. A jacking frame 106 is fixedly mounted on the forward sliding column 105.

[0033] As shown Figures 3 - 6 in the figure, a synchronization mechanism is provided on the adjusting slider 107. The synchronization mechanism includes a bottom rack 116 fixedly mounted below the adjusting slider 107. A synchronization drive wheel 118 is rotatably mounted at the bottom of the cross column 102. A synchronization gear 117 is fixedly mounted on the synchronization drive wheel 118. The synchronization gear 117 meshes with the bottom rack 116. A synchronization drive belt 119 is wound around the synchronization drive wheel 118.

[0034] The telescopic movement of the adjusting electric cylinder 108 can drive the adjusting slider 107 to slide along the cross column 102, thereby driving the forward sliding column 105 to slide along the horizontal guide rail 103. The sliding bevel gear 113 slides in the chute 104, thereby adjusting the inner and outer positions of the forward sliding column 105, thereby adjusting the inner and outer positions of the clamping device to adapt to the welding of heat exchanger shells of different lengths and also facilitating the insertion of the heat exchanger shell. The sliding of the adjusting slider 107 drives the sliding of the bottom rack 116, thereby driving the synchronization gear 117 and the synchronization drive wheel 118 to rotate, driving the two adjusting sliders 107 on the same cross column 102 to move outward or inward simultaneously, and driving the adjusting slider 107 on the other side to move synchronously inward or outward through the synchronization drive wheel 118, thereby realizing the synchronous movement of the four adjusting sliders 107 and enabling the two forward sliding columns 105 to move synchronously and parallelly inward and outward.

[0035] The rotation of the rotating motor 109 drives the rotation of the motor wheel 110, drives the upper transmission wheel 111 and the horizontal guide rail 103 to rotate through the upper transmission belt 112, thereby driving the rotation of the sliding bevel gear 113, thereby driving the rotation of the lead screw bevel gear 115 and the lead screw 114, and further driving the sliding frame 201 to slide along the forward sliding column 105 through the internal thread block 202.

[0036] As shown Figures 7 - 10As shown, the clamping device includes an internally threaded block 202 fixedly installed in the sliding frame 201. The internally threaded block 202 forms a threaded drive with the lead screw 114. A side motor 203 is fixedly installed on the sliding frame 201, and a motor bevel gear 204 is fixedly installed on the motor shaft of the side motor 203. A fixed seat 206 is fixedly installed on the sliding frame 201. A rotating cylinder 207 is rotatably installed in the fixed seat 206. A rotating gear 212 is fixedly installed on the rotating cylinder 207. A double lead screw shaft 218 is rotatably installed in the rotating cylinder 207. Both ends of the double lead screw shaft 218 have threads with opposite directions. A rotating bevel gear 205 is fixedly installed on the double lead screw shaft 218. The rotating bevel gear 205 meshes with the motor bevel gear 204. Two internally threaded rings 217 are slidably installed in the rotating cylinder 207. The internally threaded rings 217 respectively form a threaded drive with the two lead screws on the double lead screw shaft 218. Three support connecting rods 216 are rotatably installed on the internally threaded rings 217. The support connecting rods 216 are slidably installed in the long grooves on the rotating cylinder 207. A support tightening plate 215 is rotatably installed on the support connecting rods 216. An outer heat exchanger shell 213 and two flanges 214 are placed outside the support tightening plate 215.

[0037] As Figures 7 - 10 As shown, a tooth engaging mechanism is provided on the fixed seat 206. The tooth engaging mechanism includes a guide post 208 fixedly installed on the fixed seat 206. A lifting clamping plate 210 is slidably installed on the guide post 208. A guide post spring 209 is provided between the lifting clamping plate 210 and the guide post 208. A toothed rack 211 is fixedly installed on the lifting clamping plate 210. The toothed rack 211 meshes with the rotating gear 212.

[0038] When the sliding frame 201 moves to the outside following the forward sliding column 105, at this time, the heat exchanger housing 213 and the two flanges 214 are placed on the tightening plate 215, and the heat exchanger housing 213 and the two flanges 214 are in close contact. Subsequently, the forward sliding column 105 retracts. At this time, the clamping rack 211 meshes with the rotating gear 212, and the rotating gear 212 and the rotating cylinder 207 cannot rotate. The side motor 203 rotates to drive the motor bevel gear 204 to rotate, thereby driving the rotating bevel gear 205 and the double lead screw shaft 218 to rotate, thereby driving the two internal thread rings 217 to slide along the rotating cylinder 207 in opposite directions, thereby driving the support connecting rod 216 to rotate, thereby driving the tightening plate 215 to open outward, and clamping the heat exchanger housing 213 and the flange 214 through the tightening plate 215. When the sliding frame 201 and the internal thread block 202 move along the forward sliding column 105 to the jacking frame 106, the jacking frame 106 jacks up the lifting clamping plate 210 along the guide post 208, and the guide post spring 209 is compressed, so that the clamping rack 211 is disengaged from the rotating gear 212. At this time, the weld of the heat exchanger housing 213 and the flange 214 contacts the welding torch 307. At this time, the side motor 203 rotates to drive the double lead screw shaft 218 to rotate. Since the tightening plate 215 has tightened the heat exchanger housing 213 and the flange 214, when the double lead screw shaft 218 continues to rotate at this time, it will drive the internal thread ring 217, the support connecting rod 216 and the tightening plate 215 to rotate together, thereby driving the heat exchanger housing 213 and the flange 214 to rotate together through the tightening plate 215, and cooperating with the welding torch 307 to weld the heat exchanger housing 213 and the flange 214 for a full circle.

[0039] As Figure 11 , Figure 12 shown, the welding device includes a crosswise column 302 fixedly installed on the welding frame 301. An adjusting screw 303 is rotatably installed on the welding frame 301. An adjusting knob 304 is fixedly installed on the adjusting screw 303. A guide sleeve 306 is slidably installed on the crosswise column 302. An adjusting seat 305 is fixedly installed on the guide sleeve 306. A welding torch 307 is fixedly installed on the adjusting seat 305.

[0040] As Figure 11 , Figure 12 shown, a coarse adjustment mechanism is provided on the adjusting seat 305. The coarse adjustment mechanism includes a clamping column 309 slidably installed on the adjusting seat 305. A clamping column spring 310 and an internal thread clamp 308 are fixedly installed on the clamping column 309. Internal threads are provided on the internal thread clamp 308. A pull block 311 is provided between the clamping column spring 310 and the adjusting seat 305. The internal thread clamp 308 and the adjusting screw 303 form a threaded drive.

[0041] First, pull out the clamping post spring 310, thereby driving the clamping post 309 and the internal thread clamp 308 to slide outwards. The pulling block 311 is stretched. At this time, the internal thread clamp 308 is disengaged from the adjusting lead screw 303. Then, manually move the adjusting seat 305 along the transverse moving post 302 to roughly adjust the position of the adjusting seat 305. Subsequently, release the clamping post spring 310, and the pulling block 311 rebounds, causing the internal thread clamp 308 to start cooperating with the adjusting lead screw 303. At this time, turning the adjusting knob 304 can drive the adjusting lead screw 303 to rotate, thereby driving the internal thread clamp 308 and the adjusting seat 305 to move along the guide sleeve 306 to finely adjust the position of the adjusting seat 305.

[0042] The working principle of a welding device for a heat exchanger housing disclosed by the present invention is as follows: Adjusting the telescopic movement of the electric cylinder 108 can drive the adjusting slider 107 to slide along the cross column 102, thereby driving the forward sliding column 105 to slide along the cross guide rail 103. The sliding bevel gear 113 slides in the chute 104, thereby adjusting the inner and outer positions of the forward sliding column 105, and thus adjusting the inner and outer positions of the clamping device to adapt to the welding of heat exchanger housings of different lengths and also facilitating the insertion of the heat exchanger housing. The sliding of the adjusting slider 107 drives the bottom rack 116 to slide, thereby driving the synchronous gear 117 and the synchronous transmission wheel 118 to rotate, driving the two adjusting sliders 107 on the same cross column 102 to move outward or inward simultaneously, and driving the adjusting slider 107 on the other side to move inward or outward synchronously through the synchronous transmission wheel 118, thereby realizing the synchronous movement of the four adjusting sliders 107 and enabling the two forward sliding columns 105 to move parallelly inward and outward synchronously. The rotation of the rotating motor 109 drives the motor wheel 110 to rotate, drives the upper transmission wheel 111 and the cross guide rail 103 to rotate through the upper transmission belt 112, thereby driving the sliding bevel gear 113 to rotate, driving the lead screw bevel gear 115 and the lead screw 114 to rotate, and further driving the sliding frame 201 to slide along the forward sliding column 105 through the internal thread block 202. First, pull out the clamping post spring 310, thereby driving the clamping post 309 and the internal thread clamp 308 to slide outward, and the pulling block 311 is stretched. At this time, the internal thread clamp 308 is disengaged from the adjusting lead screw 303. At this time, manually move the adjusting seat 305 to slide along the transverse moving column 302, first roughly adjust the position of the adjusting seat 305, and then release the clamping post spring 310. The pulling block 311 rebounds, enabling the internal thread clamp 308 to start cooperating with the adjusting lead screw 303. At this time, turning the adjusting knob 304 can drive the adjusting lead screw 303 to rotate, thereby driving the internal thread clamp 308 and the adjusting seat 305 to move along the guide sleeve 306 to finely adjust the position of the adjusting seat 305.When the sliding frame 201 moves to the outside following the forward sliding column 105, at this time, place the heat exchanger housing 213 and the two flanges 214 on the tightening plate 215. The heat exchanger housing 213 and the two flanges 214 are in close contact. Subsequently, the forward sliding column 105 retracts. At this time, the clamping rack 211 meshes with the rotating gear 212, and the rotating gear 212 and the rotating cylinder 207 cannot rotate. The side motor 203 rotates to drive the motor bevel gear 204 to rotate, thereby driving the rotating bevel gear 205 and the double lead screw shaft 218 to rotate, thereby driving the two internal thread rings 217 to slide along the rotating cylinder 207 in opposite directions, thereby driving the support connecting rod 216 to rotate, thereby driving the tightening plate 215 to open outward, and clamping the heat exchanger housing 213 and the flange 214 through the tightening plate 215. When the sliding frame 201 and the internal thread block 202 move along the forward sliding column 105 to the jacking frame 106, the jacking frame 106 jacks up the lifting clamping plate 210 along the guide post 208, and the guide post spring 209 is compressed, so that the clamping rack 211 is disengaged from the rotating gear 212. At this time, the weld of the heat exchanger housing 213 and the flange 214 contacts the welding torch 307. At this time, the side motor 203 rotates to drive the double lead screw shaft 218 to rotate. Since the tightening plate 215 has tightened the heat exchanger housing 213 and the flange 214, when the double lead screw shaft 218 continues to rotate, it will drive the internal thread ring 217, the support connecting rod 216 and the tightening plate 215 to rotate together, thereby driving the heat exchanger housing 213 and the flange 214 to rotate together through the tightening plate 215, and cooperating with the welding torch 307 to weld the heat exchanger housing 213 and the flange 214 for a full circle.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope of the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A heat exchanger shell welding device, comprising a base device, characterized in that: The base device comprises a base (101), a screw rod (114) and a forward sliding column (105); the base device is used to drive the heat exchanger shell and the flange to move; the base device is provided with a clamping device and two welding devices; the clamping device comprises a sliding frame (201); the sliding frame (201) is slidably mounted on the forward sliding column (105); the clamping device is used to clamp heat exchanger shells and flanges of various sizes and drive the heat exchanger shell to rotate to cooperate with welding during welding; the welding device comprises a welding frame (301); the welding frame (301) is fixedly mounted on the base (101); the welding device is used to weld the heat exchanger shell and the flange; The clamping device comprises an internal thread block (202) fixedly mounted in the sliding frame (201), the internal thread block (202) and the screw rod (114) forming a threaded transmission, a side motor (203) fixedly mounted on the sliding frame (201), a motor bevel gear (204) fixedly mounted on the motor shaft of the side motor (203), a fixed seat (206) fixedly mounted on the sliding frame (201), a rotating cylinder (207) rotatably mounted in the fixed seat (206), a rotating gear (212) fixedly mounted on the rotating cylinder (207), a double screw shaft (218) rotatably mounted in the rotating cylinder (207), and the double screw shaft (218) is provided with threads with opposite directions. The double-screw shaft (218) has threads at both ends, a rotating bevel gear (205) is fixedly mounted on the double-screw shaft (218), the rotating bevel gear (205) is meshed with the motor bevel gear (204), two internal thread rings (217) are slidably mounted in the rotating cylinder (207), the internal thread rings (217) and the screws at both ends of the double-screw shaft (218) respectively form a threaded transmission, three supporting rods (216) are rotatably mounted on the internal thread rings (217), the supporting rods (216) are slidably mounted in the long grooves on the rotating cylinder (207), a tightening plate (215) is rotatably mounted on the supporting rods (216), and a heat exchanger housing (213) and two flanges (214) are placed outside the tightening plate (215); The welding device comprises a traverse column (302) fixedly mounted on a welding frame (301); an adjusting screw rod (303) is rotatably mounted on the welding frame (301); an adjusting knob (304) is fixedly mounted on the adjusting screw rod (303); a guide sleeve (306) is slidably mounted on the traverse column (302); an adjusting seat (305) is fixedly mounted on the guide sleeve (306); and a welding gun (307) is fixedly mounted on the adjusting seat (305); The adjustment seat (305) is provided with a coarse adjustment mechanism, the coarse adjustment mechanism comprising a clamping column (309) slidably mounted on the adjustment seat (305), a clamping column spring (310) and an internal thread clamp (308) fixedly mounted on the clamping column (309), an internal thread clamp (308) being provided with an internal thread, a puller block (311) being provided between the clamping column spring (310) and the adjustment seat (305), and a threaded transmission being formed between the internal thread clamp (308) and the adjustment screw rod (303); The fixed seat (206) is provided with a latching gear mechanism, the latching gear mechanism comprising a guide column (208) fixedly mounted on the fixed seat (206), a lifting and lowering card plate (210) slidably mounted on the guide column (208), a guide column spring (209) being provided between the lifting and lowering card plate (210) and the guide column (208), a latching gear rack (211) being fixedly mounted on the lifting and lowering card plate (210), and the latching gear rack (211) being meshed with a rotating gear (212).

2. A heat exchanger shell welding device according to claim 1, characterized in that: The base device comprises a transverse column (102) fixedly mounted on the base (101), a transverse guide rail (103) fixedly mounted on the transverse column (102), a slide groove (104) provided on the transverse guide rail (103), a rotating motor (109) fixedly mounted on the transverse column (102), a motor wheel (110) fixedly mounted on the motor shaft of the rotating motor (109), an upper transmission wheel (111) fixedly mounted on the transverse guide rail (103), and an upper transmission belt (112) wound around the upper transmission wheel (111) and the motor wheel (110).

3. A heat exchanger shell welding device according to claim 2, characterized in that: The cross column (102) is provided with an adjustment mechanism, which comprises an adjustment slider (107) slidably mounted on the cross column (102), a forward slider (105) fixedly mounted on the adjustment slider (107), the forward slider (105) and the cross guide rail (103) being slidably mounted, an adjustment electric cylinder (108) fixedly mounted on the cross column (102), the top of the adjustment electric cylinder (108) being fixedly mounted on the adjustment slider (107), a lead screw (114) being rotatably mounted in the forward slider (105), a lead screw bevel gear (115) being fixedly mounted on the lead screw (114), a sliding bevel gear (113) being rotatably mounted on the forward slider (105), the sliding bevel gear (113) sliding in the slide groove (104), and a jacking frame (106) being fixedly mounted on the forward slider (105).

4. A heat exchanger shell welding device according to claim 3, characterized in that: The adjusting slider (107) is provided with a synchronization mechanism, the synchronization mechanism comprising a bottom rack (116) fixedly mounted below the adjusting slider (107), a synchronization transmission wheel (118) rotatably mounted at the bottom of the cross column (102), a synchronization gear (117) fixedly mounted on the synchronization transmission wheel (118), the synchronization gear (117) meshing with the bottom rack (116), and a synchronization transmission belt (119) wound around the synchronization transmission wheel (118).

Images