Welding device for water pump shell

Abstract

The welding device for the water pump shell comprises a fixed box provided with a base, and an abutting mechanism is arranged on a body of the fixed box; the abutting mechanism comprises a rotating pipe, the outer surface of the rotating pipe is rotationally connected with a body of the fixed box in a penetrating mode, the rotating pipe is used for entering and exiting of air in the fixed box and rotating through air flowing, the outer surface of the rotating pipe is in threaded connection with a screw pipe, and the outer surface of the screw pipe is movably connected with the interior of the fixed box; the water pump shell welding device comprises a screw pipe, the outer surface of the screw pipe is fixedly connected with an abutting plate in a penetrating mode, the outer surface of the abutting plate is fixedly connected with a telescopic rod, the telescopic rod limits rotation of the abutting plate through stretching out and drawing back, and a through air hole is formed in a body of the screw pipe. The problems that during spin welding, the stability of the water pump shell is easily reduced, much protective gas is needed, and the consumption of recovered protective gas is large are solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a welding device for a water pump casing. Background Art

[0002] In traditional water pump casing welding technology, gas protection is usually only applied to the welding side. This is because the limitations of the equipment structure and welding process make it difficult to perform gas protection on the inside of the water pump casing during welding, and defects such as oxidation, inclusions, and bubbles may occur at the welding site. The invention patent with application number CN202311354165.4 discloses a water pump casing welding device and its welding process, including a base, with a box body fixedly connected to the top of the base, so that during the welding process of the water pump casing, gas protection is performed on the welding side and the inside of the water pump casing at the same time to prevent defects such as oxidation, inclusions, and bubbles at the welding site.

[0003] Although the device has the above advantages, it still has the following defects when used:

[0004] 1) The device increases the gas pressure when the protective gas is filled, so that the clamping piston moves and continuously abuts against the water pump housing to improve the clamping stability. However, when the water pump housing is rotated and welded, the internal gas will flow, which may easily reduce the clamping stability.

[0005] 2) When the device is in use, the protective gas has a large flow range, which easily consumes more protective gas, and more energy is required during gas recovery, resulting in higher actual consumption.

[0006] Therefore, it is necessary to solve the problems that still exist in the existing devices. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a welding device for a water pump casing, which solves the problems that the stability of the water pump casing is easily reduced during rotary welding when the existing water pump casing welding device is used, more protective gas is required, and the consumption of recycled protective gas is large.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A welding device for a water pump housing, comprising a solid box provided with a base, and an abutment mechanism is provided on the body of the solid box;

[0009] The abutment mechanism includes a rotating tube, the outer surface of which is rotatably connected to the body of the solid box, the rotating tube is used for the entry and exit of air inside the solid box, and is rotated by air flow, the outer surface of the rotating tube is threadedly connected with a screw tube, the outer surface of the screw tube is movably connected to the interior of the solid box, the outer surface of the screw tube is fixedly connected with an abutment plate, the outer surface of the abutment plate is fixedly connected to a telescopic rod, the telescopic rod limits the rotation of the abutment plate by telescoping, the body of the screw tube is provided with a through air hole, the interior of the air hole is respectively connected to the rotating tube and the interior of the solid box, the outer side of the screw tube is sleeved with a tension spring, one end of the tension spring is fixedly connected to the outer surface of the abutment plate.

[0010] Preferably, one end of the rotating tube is penetrated and connected to an air pipe, the air pipe is internally rotatably connected to a fan blade, the axial end of the fan blade is penetrated and rotatably connected to the body of the air pipe and extends to the outside of the air pipe, the axial end of the fan blade and the outer surface of the rotating tube are penetrated and fixedly connected to a transmission wheel, and the outer surfaces of the two transmission wheels are connected by a transmission belt.

[0011] Preferably, a clamping assembly is provided on the outside of the rotating tube, and the clamping assembly includes a clamping tube, the outer surface of the clamping tube is movably connected to the inside of the solid box, the inside of the clamping tube is connected to the inside of the screw tube, one end of the clamping tube is fixedly connected to a slide, and the outer surface of the slide is fixedly connected to an adjusting rod.

[0012] Preferably, the outer surface of the skateboard is movably connected to a rotating plate, the outer surface of the rotating plate is fixedly connected to a rotating shaft, one end of the rotating shaft is embedded and rotatably connected to the interior of the fixed box, the outer surface of the rotating plate is fixedly connected to a fixed seat, and the outer surface of the fixed seat is fixedly connected to the outer surface of the adjusting rod.

[0013] Preferably, a driving assembly is provided on the outside of the rotating tube, and the driving assembly includes a sealing plate, the outer surface of the sealing plate is rotatably connected to the body of the solid box, the body of the sealing plate is fixedly connected with a first ratchet, the output end of the first ratchet is fixedly connected to the outer surface of the rotating tube, the outer surface of the sealing plate is fixedly connected to a worm gear ring, the outer surface of the worm gear ring is meshed with a worm, and the outer surface of the sealing plate is fixedly connected to the telescopic rod and one end of the tension spring, respectively.

[0014] Preferably, one end of the worm is rotatably connected to a support plate, the outer surface of the support plate is fixedly connected to the outer surface of the solid box, two meshing gears are provided on the outside of the support plate, and the body of the other gear is fixedly connected to the outer surface of the worm.

[0015] Preferably, a linkage unit is fixedly connected to the outer surface of one of the gears, and the linkage unit includes a rotating rod, one end of which is fixedly connected to the outer surface of one of the gears, and a torsion spring is sleeved on the outer surface of the rotating rod, and both ends of the torsion spring are respectively fixedly connected to the outer surface of one of the gears and the outer surface of the support plate.

[0016] Preferably, a rotation damper is fixedly connected to the outer surface of the rotating rod, and the outer surface of the rotation damper is fixedly connected to the body of the support plate. A prism is provided at one end of the rotating rod, and a ratchet wrench is movably connected to the outer surface of the prism. The outer surface of the ratchet wrench is rotationally connected to the body of the support plate, and the outer surface of the ratchet wrench is fixedly connected to the axial end of the fan blade.

[0017] Preferably, a limiting unit is provided on the outside of one of the gears, and the limiting unit includes a spring rod, the output end of the spring rod is fixedly connected to a clamping plate, the outer surface of the clamping plate is movably connected to a fixing plate, and the outer surface of the fixing plate is fixedly connected to the outer surface of one of the gears.

[0018] Preferably, the outer surface of the clamping plate is fixedly connected with a magnetic ring, the outer surface of the magnetic ring is movably connected with an electromagnet through magnetic force, and the outer surface of the electromagnet is respectively fixedly connected with the outer surface of the spring rod and the support plate.

[0019] Beneficial Effects

[0020] The present invention provides a welding device for a water pump housing. Compared with the prior art, the device has the following beneficial effects:

[0021] (1) By setting up an abutment mechanism, when the air inside the solid box is extracted, the rotating tube is rotated by the air flow, and the threaded connection between the rotating tube and the spiral tube causes the spiral tube to push the abutment plate to move along the axis, thereby strengthening the abutment against the pump casing. The stability of the water pump casing is improved through the effect of the spiral abutment, and the air is extracted from one side, and the volume of the solid box is reduced, thereby reducing the use of protective gas and reducing the recovery consumption.

[0022] (2) By setting up a clamping assembly, the slide plate and the clamping tube are driven to move by an adjusting rod, so as to adapt to the clamping of the water pump housing, and through the action of the rotating plate and the rotating shaft, the two sides of the water pump housing are made to rotate coaxially to facilitate the rotation welding thereof.

[0023] (3) By setting up a driving assembly and utilizing the meshing of the worm and the worm gear ring, on the one hand, the stability of the sealing plate can be achieved to realize the limiting effect on the abutment plate; on the other hand, through the action of the first ratchet, the sealing plate can drive the water pump housing through the rotating tube for rotation welding.

[0024] (4) By setting up a linkage unit and utilizing the cooperation of a ratchet wrench and a prism, the fan blade drives the worm to rotate through the rotating rod, and through the compression of the torsion spring, when the torsion spring rebounds, the worm drives the water pump housing to rotate, thereby continuously utilizing the kinetic energy of the discharged air.

[0025] (5) By setting a limit unit and utilizing the abutment between the clamping plate and the fixing plate, the torsion spring is kept in a compressed state, thereby facilitating the control of the rotational action of the welding. At the same time, the magnetic force is utilized to make the fixing plate move away from the limit action, so as to facilitate driving the water pump housing for rotational welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of the internal structure of the present invention;

[0027] Figure 2 It is a three-dimensional diagram of the external structure of the rotating tube of the present invention;

[0028] Figure 3 The external structure stereogram of the rotating plate of the present invention;

[0029] Figure 4 It is a stereoscopic diagram of the external structure of the worm of the present invention;

[0030] Figure 5 It is a three-dimensional diagram of the external structure of the rotating rod of the present invention;

[0031] Figure 6 It is a three-dimensional diagram of the external structure of the card board of the present invention.

[0032] In the figure: 1. fixed box; 2. rotating tube; 3. driving assembly; 31. sealing plate; 32. first ratchet; 33. worm wheel ring; 34. worm; 35. support plate; 36. gear; 37. limiting unit; 371. spring rod; 372. clamping plate; 373. fixed plate; 374. magnetic ring; 375. electromagnet; 38. linkage unit; 381. rotating rod; 382. torsion spring; 383. rotary damper; 384. prism; 385. ratchet wrench; 4. clamping assembly; 41. clamping tube; 42. slide plate; 43. adjusting rod; 44. rotating plate; 45. rotating shaft; 46. fixed seat; 5. screw tube; 6. abutment plate; 7. telescopic rod; 8. air hole; 9. tension spring; 10. air pipe; 11. fan blade; 12. transmission wheel; 13. transmission belt. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-6 The present invention provides a technical solution: a welding device for a water pump housing:

[0035] Embodiment 1: Refer to the attached manual Figure 1 , Attachment Figure 2 ;

[0036] The invention comprises a solid box 1 provided with a base, the solid box 1 is cylindrical and hollow inside, and a welding device is arranged inside the solid box 1 so as to weld the water pump casing, and an abutting mechanism is arranged on the body of the solid box 1; the abutting mechanism comprises a rotating tube 2, the outer surface of the rotating tube 2 is rotatably connected with the body of the solid box 1, the rotating tube 2 is used for the air inside the solid box 1 to enter and exit, and to rotate through the air flow, the outer surface of the rotating tube 2 is threadedly connected with a spiral tube 5, and the spiral tube 5 is abutted by the spiral to improve its own stability, the outer surface of the spiral tube 5 is movably connected with the inside of the solid box 1, and the outer surface of the spiral tube 5 is fixedly connected with a butt plate 6 through and through, and the butt plate 6 is made of a material that is resistant to pressure, wear-resistant and has good sealing properties, and the outer surface of the butt plate 6 is fixedly connected with a telescopic rod 7, and the telescopic rod 7 can radially limit the butt plate 6 to facilitate the axial movement of the butt plate 6, and the telescopic rod 7 limits the rotation of the butt plate 6 by telescoping, and the body of the spiral tube 5 is provided with a through The air hole 8 is separated from the blockage of the rotating tube 2 after the axial movement of the spiral tube 5, so as to discharge the air inside the solid box 1. The interior of the air hole 8 is respectively connected with the interior of the rotating tube 2 and the solid box 1. The outer sleeve of the spiral tube 5 is provided with a tension spring 9, which facilitates the resetting of the abutment plate 6 by rebounding. One end of the tension spring 9 is fixedly connected to the outer surface of the abutment plate 6. One end of the rotating tube 2 is penetrated and connected with an air pipe 10. The two ends of the air pipe 10 are respectively connected with its air pump and the protective gas tank, and solenoid valves are provided at both ends to control the flow of air and protective gas. The interior of the air pipe 10 is rotatably connected with a fan blade 11, and the fan blade 11 obtains rotational kinetic energy by contact with the flowing air. The axial end of the fan blade 11 is rotatably connected with the main body of the air pipe 10 and extends to the outside of the air pipe 10. The axial end of the fan blade 11 and the outer surface of the rotating tube 2 are penetrated and fixedly connected with a transmission wheel 12, and the outer surfaces of the two transmission wheels 12 are connected by a transmission belt 13.

[0037] When the air in the air pipe 10 is under negative pressure, the air pump stops working and the solenoid valve on the corresponding side is closed, while the solenoid valve on the other side is opened. The protective gas in the gas tank passes through the rotating tube 2, the solenoid tube 5 and the air hole 8 and enters the interior of the solid box 1 and the water pump housing respectively.

[0038] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 1 , Attachment Figure 3 ;

[0039] A clamping assembly 4 is provided on the outside of the rotating tube 2, and the clamping assembly 4 includes a clamping tube 41, which can clamp and abut the other end of the water pump housing, and the outer surface of the clamping tube 41 is movably connected to the interior of the solid box 1, and the interior of the clamping tube 41 is connected to the interior of the spiral tube 5, and one end of the clamping tube 41 is fixedly connected to a slide plate 42, and the slide plate 42 is made of the same material as the abutment plate 6, and the outer surface of the slide plate 42 is fixedly connected to an adjusting rod 43, and the adjusting rod 43 is made of an electric push rod and a workpiece with the same telescopic function, so as to facilitate the adjustment of the relative position of the clamping tube 41, so as to adapt to the clamping of one side of the water pump housing, and the outer surface of the slide plate 42 is movably connected to a rotating plate 44, and the outer surface of the rotating plate 44 is fixedly connected to a rotating shaft 45, and the rotating shaft 45 and the rotating plate 44 are convenient for coaxial rotation with both sides of the water pump housing, and one end of the rotating shaft 45 is embedded in the interior of the solid box 1 for rotation, and the outer surface of the rotating plate 44 is fixedly connected to a fixed seat 46, and the outer surface of the fixed seat 46 is fixedly connected to the outer surface of the adjusting rod 43.

[0040] In this embodiment, after the water pump housing is assembled and placed inside the solid box 1, the output end of the adjusting rod 43 extends so that the slide plate 42 drives the clamping tube 41 to move, so as to adjust the relative position of the clamping tube 41, and synchronously rotate the rotating plate 44 so that the clamping tube 41 is coaxial with the other side of the water pump housing, and then the clamping tube 41 is inserted into the interior of the other side of the water pump housing, and the other side of the water pump housing is abutted by the slide plate 42.

[0041] Embodiment 3: Based on Embodiment 2, refer to the attached Figure 1 , Attachment Figure 4 ;

[0042] A driving assembly 3 is arranged outside the rotating tube 2, and the driving assembly 3 includes a sealing plate 31. The sealing plate 31 is in a circular plate shape and is made of the same material as the abutment plate 6. At the same time, the middle part of the arc edge thereof is convexly arranged to realize the axial limiting effect. The outer surface of the sealing plate 31 is rotatably connected with the body of the solid box 1 through penetration. The body of the sealing plate 31 is fixedly connected with a first ratchet 32 ​​through penetration. The first ratchet 32 ​​adopts the ratchet structure of the rear wheel of a bicycle, which is convenient for the rotating tube 2 to rotate independently, and the sealing plate 31 drives the rotating tube 2 to rotate. The output end of the first ratchet 32 ​​is fixedly connected to the outer surface of the rotating tube 2. The outer surface of the sealing plate 31 is fixedly connected with a worm ring 33. 33 is formed by a hollow middle part of the worm wheel, and a worm 34 is meshed on the outer surface of the worm wheel ring 33. The meshing of the worm 34 and the worm wheel ring 33 realizes a self-locking function, thereby realizing the limiting effect of the sealing plate 31 on the abutment plate 6. The outer surface of the sealing plate 31 is fixedly connected to the telescopic rod 7 and one end of the tension spring 9 respectively. One end of the worm 34 is rotatably connected with a support plate 35. The outer surface of the support plate 35 is fixedly connected to the outer surface of the solid box 1. Two meshing gears 36 are arranged on the outside of the support plate 35. The gear 36 is made of an existing bevel gear to realize a vertical transmission effect. The body of the other gear 36 is fixedly connected to the outer surface of the worm 34.

[0043] In this embodiment, when the rotating tube 2 rotates, the meshing self-locking of the worm ring 33 and the worm 34 is achieved, and the radial limitation of the abutment plate 6 is achieved through the telescopic rod 7, so that the abutment plate 6 can slide axially to clamp the water pump housing. When the water pump housing needs to be rotationally welded, the meshing transmission of the two gears 36 makes the worm 34 drive the worm ring 33 to drive the sealing plate 31 to rotate, and the sealing plate 31 drives the rotating tube 2 and the abutment plate 6 to rotate through the first ratchet 32, so that the water pump housing follows the rotation for welding.

[0044] Embodiment 4: Based on Embodiment 3, refer to the attached Figure 4 , Attachment Figure 5 ;

[0045] The outer surface of one of the gears 36 is fixedly connected with a linkage unit 38, and the linkage unit 38 includes a rotating rod 381, one end of the rotating rod 381 is fixedly connected with the outer surface of one of the gears 36, and the outer surface of the rotating rod 381 is sleeved with a torsion spring 382, ​​and the torsion spring 382 causes the worm 34 to drive the sealing plate 31 to rotate by rebounding, and the two ends of the torsion spring 382 are respectively fixedly connected with the outer surface of one of the gears 36 and the outer surface of the support plate 35, and the outer surface of the rotating rod 381 is fixedly connected with a rotation damper 383, and the rotation damper 383 can make the rotating rod 381 slowly and uniformly drive the worm 34 to rotate, so that the water pump housing can be evenly welded, the welding effect is improved, and the rotation The outer surface of the rotary damper 383 is fixedly connected to the body of the support plate 35, one end of the rotating rod 381 is movably connected to the prism 384, one end of the rotating rod 381 is provided with a groove (not shown in the figure), and an electric push rod is provided inside the groove, and the output end of the electric push rod is fixedly connected to one end of the prism 384, and the outer surface of the prism 384 is movably connected to the ratchet wrench 385. The combination of the ratchet wrench 385 and the prism 384 makes it convenient for the fan blade 11 to drive the rotating rod 381 to rotate, and the rotating rod 381 to rotate in the opposite direction alone. The outer surface of the ratchet wrench 385 is rotatably connected to the body of the support plate 35, and the outer surface of the ratchet wrench 385 is fixedly connected to the shaft end of the fan blade 11.

[0046] In this embodiment, when the fan blades 11 drive the counter plate 6 to rotate, the electric push rod drives the prism 384 to retract into the groove at one end of the rotating rod 381, so that the sealing plate 31 remains stable to radially limit the counter plate 6. When the counter plate 6 clamps the water pump housing, the electric push rod drives the prism 384 to reset and connect with the ratchet wrench 385. Then the fan blades 11 drive the rotating rod 381 to rotate so that the torsion spring 382 is compressed. When the torsion spring 382 rebounds, the rotating rod 381 can be rotated alone through the ratchet wrench 385, and the rotating rod 381 drives the worm 34 and the sealing plate 31 to rotate through the transmission of the gear 36, so that the water pump housing rotates accordingly.

[0047] Embodiment 5: Based on Embodiment 4, refer to the attached Figure 4 , Attachment Figure 6 ;

[0048] A limiting unit 37 is arranged outside one of the gears 36. The limiting unit 37 includes a spring rod 371. A clamping plate 372 is fixedly connected to the output end of the spring rod 371. A fixing plate 373 is movably connected to the outer surface of the clamping plate 372. The clamping plate 372 and the second fixing plate 373 are both triangular in shape. The limiting of the gear 36 is achieved through the abutment between the straight edges, and the rotation of the water pump housing can be controlled. The clamping plate 372 moves through the output end of the spring rod 371, which can facilitate the compression of the torsion spring 382 by the gear 36. At the same time, the fixing plate 373 is on the gear 36. There are multiple surfaces arranged at equal angles around the axis of the gear 36. The outer surface of the fixed plate 373 is fixedly connected to the outer surface of one of the gears 36. The outer surface of the card plate 372 is fixedly connected to the magnetic ring 374. The magnetic ring 374 is made of a permanent magnet. The outer surface of the magnetic ring 374 is connected to the electromagnet 375 through magnetic activity. The electromagnet 375 is electrically connected to the external control circuit. After power is turned on to generate magnetism, it uses magnetic force with the magnetic ring 374 to control the card plate 372. The outer surface of the electromagnet 375 is fixedly connected to the outer surface of the spring rod 371 and the support plate 35 respectively.

[0049] In this embodiment, the rotation of the gear 36 drives the fixed plate 373 to rotate. The fixed plate 373 abuts against the beveled edge of the card plate 372, so that the card plate 372 compresses the output end of the spring rod 371 to move. When the gear 36 stops compressing the torsion spring 382, ​​the card plate 372 and the fixed plate 373 abut against the straight edges to limit the gear 36 and the torsion spring 382. When welding is required, the electromagnet 375 is energized to generate magnetism, and through the magnetic attraction with the magnetic ring 374, the card plate 372 moves out of the abutment with the fixed plate 373. After the gear 36 is out of the abutment, the torsion spring 382 rebounds to obtain power to drive the worm 34 to rotate, thereby causing the sealing plate 31 to drive the water pump housing to rotate.

[0050] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0051] 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. A welding device for a water pump housing, comprising a fixing box (1) provided with a base, characterized in that: The main body of the solid box (1) is provided with an abutment mechanism; The abutment mechanism comprises a rotating tube (2), the outer surface of the rotating tube (2) is rotatably connected to the body of the solid box (1), the rotating tube (2) is used for the air inside the solid box (1) to enter and exit, and is rotated by air flow, the outer surface of the rotating tube (2) is threadedly connected with a spiral tube (5), the outer surface of the spiral tube (5) is movably connected to the inside of the solid box (1), the outer surface of the spiral tube (5) is fixedly connected to a butt plate (6), the outer surface of the butt plate (6) is fixedly connected to a telescopic rod (7), the telescopic rod (7) limits the rotation of the butt plate (6) by telescoping, the body of the spiral tube (5) is provided with a through air hole (8), the interior of the air hole (8) is respectively connected to the interior of the rotating tube (2) and the solid box (1), the outside of the spiral tube (5) is sleeved with a tension spring (9), one end of the tension spring (9) is fixedly connected to the outer surface of the butt plate (6).

2. A welding device for a water pump housing according to claim 1, characterized in that: One end of the rotating tube (2) is connected to an air pipe (10) through which a fan blade (11) is rotatably connected inside the air pipe (10), an axial end of the fan blade (11) is rotatably connected to a body of the air pipe (10) and extends to the outside of the air pipe (10), and a transmission wheel (12) is fixedly connected to the axial end of the fan blade (11) and the outer surface of the rotating tube (2), and the outer surfaces of the two transmission wheels (12) are connected in transmission via a transmission belt (13).

3. A welding device for a water pump housing according to claim 1, characterized in that: A clamping assembly (4) is arranged outside the rotating tube (2), and the clamping assembly (4) comprises a clamping tube (41), the outer surface of the clamping tube (41) is movably connected to the inside of the fixed box (1), the inside of the clamping tube (41) is connected to the inside of the spiral tube (5), one end of the clamping tube (41) is fixedly connected to a slide plate (42), and the outer surface of the slide plate (42) is fixedly connected to an adjusting rod (43).

4. A welding device for a water pump housing according to claim 3, characterized in that: The outer surface of the slide plate (42) is movably connected to a rotating plate (44), the outer surface of the rotating plate (44) is fixedly connected to a rotating shaft (45), one end of the rotating shaft (45) is embedded in the interior of the fixed box (1) for rotation, the outer surface of the rotating plate (44) is fixedly connected to a fixed seat (46), and the outer surface of the fixed seat (46) is fixedly connected to the outer surface of the adjusting rod (43).

5. A welding device for a water pump housing according to claim 2, characterized in that: A driving assembly (3) is arranged outside the rotating tube (2), and the driving assembly (3) comprises a sealing plate (31), the outer surface of the sealing plate (31) is rotatably connected to the body of the fixed box (1), the body of the sealing plate (31) is fixedly connected to a first ratchet (32), the output end of the first ratchet (32) is fixedly connected to the outer surface of the rotating tube (2), the outer surface of the sealing plate (31) is fixedly connected to a worm wheel ring (33), the outer surface of the worm wheel ring (33) is meshed with a worm (34), and the outer surface of the sealing plate (31) is fixedly connected to the telescopic rod (7) and one end of the tension spring (9), respectively.

6. A welding device for a water pump housing according to claim 5, characterized in that: One end of the worm (34) is rotatably connected to a support plate (35), the outer surface of the support plate (35) is fixedly connected to the outer surface of the fixed box (1), and two meshing gears (36) are arranged outside the support plate (35), and the body of the other gear (36) is rotatably connected to the outer surface of the worm (34).

7. A welding device for a water pump housing according to claim 6, characterized in that: A linkage unit (38) is fixedly connected to the outer surface of one of the gears (36), and the linkage unit (38) comprises a rotating rod (381), one end of which is fixedly connected to the outer surface of one of the gears (36), and a torsion spring (382) is sleeved on the outer surface of the rotating rod (381), and two ends of the torsion spring (382) are respectively fixedly connected to the outer surface of one of the gears (36) and the outer surface of the support plate (35).

8. A welding device for a water pump housing according to claim 7, characterized in that: The outer surface of the rotating rod (381) is fixedly connected to a rotating damper (383), and the outer surface of the rotating damper (383) is fixedly connected to the body of the support plate (35). A prism (384) is provided at one end of the rotating rod (381), and the outer surface of the prism (384) is movably connected to a ratchet wrench (385), and the outer surface of the ratchet wrench (385) is rotatably connected to the body of the support plate (35), and the outer surface of the ratchet wrench (385) is fixedly connected to the shaft end of the fan blade (11).

9. A welding device for a water pump housing according to claim 6, characterized in that: A limiting unit (37) is arranged outside one of the gears (36), the limiting unit (37) comprising a spring rod (371), the output end of the spring rod (371) being fixedly connected to a clamping plate (372), the outer surface of the clamping plate (372) being movably connected to a fixing plate (373), and the outer surface of the fixing plate (373) being fixedly connected to the outer surface of one of the gears (36).

10. A welding device for a water pump housing according to claim 9, characterized in that: The outer surface of the clamping plate (372) is fixedly connected to a magnetic ring (374), the outer surface of the magnetic ring (374) is movably connected to an electromagnet (375) through magnetic force, and the outer surface of the electromagnet (375) is respectively fixedly connected to the outer surface of the spring rod (371) and the support plate (35).

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