A welding structure with an adaptive shape adjustment fixture for a turbine housing

Abstract

The present invention relates to the technical field of water turbine maintenance and processing, specifically to a welding structure for a water turbine casing with an adaptive shape adjustment fixture, comprising two brackets, a crossbeam fixedly connected between the two brackets, two clamping assemblies provided at the bottom of the crossbeam, a sliding frame movably connected to the outer sides of the two brackets, a compensation frame fixedly connected between the two sliding frames, a standard fixture provided on the left side of the compensation frame, a welding machine provided on the outer side of the front bracket, and a telescopic cylinder fixedly connected to the top of the crossbeam. The present invention provides a welding structure for a water turbine casing with an adaptive shape adjustment fixture, which has the function of adaptively deforming to fit curved components such as a volute through a fluid medium in a clamping point unit, and locks the clamping state in conjunction with an electrically controlled three-way valve to avoid slippage and extrusion deformation. At the same time, the combination of the sliding frame, guide rail and screw drive realizes the flexible adjustment of the standard fixture, adapts to flat components, does not require customized brackets, and improves the efficiency of fixture replacement.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine maintenance and processing, in particular to a welding structure with a shape-adaptive adjustment fixture for a water turbine shell. Background Art

[0002] As we all know, it is difficult to form a whole piece when processing the turbine casing, and complex components need to be assembled through welding and other processes. Most of the welding difficulties are for large-sized components, such as welding the volute and the seat ring, or welding the top cover or the bottom ring. Therefore, in order to ensure a certain welding position, it is necessary to use a hoist or clamp to preliminarily fix it or place it to the required position and angle. When welding sheet metal parts such as lifting ears and temperature measuring element brackets to the casing body, most of them can be welded directly by holding the parts.

[0003] In the prior art, due to the generally large size of the turbine casing, although the bottom ring, top cover and seat ring can be clamped by conventional threaded clamps, it is more difficult to fix some parts such as the volute by clamps. First, the clamp is difficult to fit the shape of the volute, which may cause slippage and unstable fixation. Moreover, if the clamping force is too large, the volute is a hollow structure and even part of the volute is a sheet metal part. Therefore, it may be deformed when subjected to a large force that does not fit its own shape, which makes it more inconvenient to use.

[0004] Based on the above-mentioned situation, we found that it is difficult to avoid the above problems at the same time with the existing turbine casing welding process. Even if it can be solved, it is necessary to build a bracket for auxiliary fixation according to the required size and model of the turbine casing, which is not only costly but also very inefficient. Therefore, we propose a welding structure for the turbine casing with an adaptive shape adjustment clamp that has good compatibility and can clamp and fix most turbine casings. At the same time, it can fit the shape of the turbine casing and is not easy to cause damage to it. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a welding structure for a turbine casing with an adaptive shape adjustment clamp, which has the advantages of good compatibility, can clamp and fix most turbine casings, and can fit the shape of the turbine casing without easily causing damage to it.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a welding structure for a turbine housing with an adaptive shape adjustment fixture, comprising two brackets, a crossbeam fixedly connected between the two brackets, two clamping assemblies provided at the bottom of the crossbeam, slide frames movably connected to the outer sides of the two brackets, a compensation frame fixedly connected between the two slide frames, a standard fixture provided on the left side of the compensation frame, a welding machine provided on the outer side of the front bracket, a telescopic cylinder fixedly connected to the top of the crossbeam, the telescopic end of the telescopic cylinder passing through the crossbeam and movably connected to the top clamping assembly;

[0007] The clamping assembly includes a quick-insert frame, a clamping point unit is clamped on the inner side of the quick-insert frame, a hanging bracket is fixedly connected to the outer side of the quick-insert frame, a water tank is fixedly connected to the inner side of the hanging bracket, an electric-controlled three-way valve is fixedly connected to the side of the water tank close to the clamping point unit, a water distribution pipe is fixedly connected to the top of the electric-controlled three-way valve, a pump is fixedly connected to the other end of the electric-controlled three-way valve, an input end of the pump is fixedly connected to the water tank, a hose is fixedly connected to the side of the water distribution pipe close to the clamping point unit, and the hose is connected to the clamping point unit.

[0008] The above technical solution is adopted, by setting a bracket and a crossbeam as a structural support, and the standard clamp is installed in a position convenient for operation through a sliding frame and a compensation frame, and the standard clamp can be used to clamp flat parts such as top covers or bottom rings. The welding machine is suspended on the top of the front bracket to free up the ground for loading and unloading large-sized welding workpieces, and sliding along the front bracket can facilitate adjustment according to the welding position. A telescopic cylinder is set to push and pull the top clamping assembly so that it can be lifted and lowered vertically. The top clamping assembly and the bottom clamping assembly can clamp curved surfaces or irregular parts such as the clamped volute, and then the welding action is performed between the parts through the head part of the welding machine. The difficult-to-clamp parts and standard flat parts are clamped in different ways, and the structural setting position is optimized, which can facilitate splicing of the welding position and facilitate single-person welding operations. When the welding parts are clamped by the clamping assembly , the welding parts can be directly placed on the clamping point unit of the bottom clamping assembly, and the top clamping assembly is pushed down by the telescopic cylinder to push the top quick-insert frame. At this time, the top clamping point unit and the bottom clamping point unit are in contact with the welding parts and deform to fit their shapes. At this time, the fluid medium discharged by the clamping point unit will be injected into the water tank through the hose, water distribution pipe and electric three-way valve. Then the electric three-way valve is closed, so that the fluid medium cannot continue to be discharged or flow. At this time, the clamping point unit state is locked, completing the clamping action of the welding parts. After the operation is completed, the top quick-insert frame can be pulled up by the telescopic cylinder to complete the unlocking. At this time, the parts can be removed from all sides. Since they fit the curved surface or irregular welding parts, it is not easy to slip. After the clamping is completed, locking the clamping point unit can maintain the clamping force to avoid deformation and damage of the parts caused by excessive clamping force. At the same time, it can be adapted to most types of turbine casings, and the clamping replacement speed is fast, which effectively improves the efficiency of the welding operation.

[0009] The present invention is further configured as follows: the bottom of the compensation frame is fixedly connected to a vertical guide rail, the left side of the vertical guide rail is movably connected to a horizontal guide rail, the inner side of the horizontal guide rail is movably connected to a connecting seat, and the left side of the connecting seat and the standard clamp are installed by bolts.

[0010] By adopting the above technical solution, vertical guide rails are provided in conjunction with horizontal guide rails to adjust the horizontal position and vertical height of the standard fixture, so that the position of the standard fixture and the workpiece it clamps can be easily adjusted as needed.

[0011] The present invention is further configured as follows: the inner sides of the vertical guide rail and the horizontal guide rail are both rotatably connected with screw rods, the screw rod on the inner side of the vertical guide rail is vertically arranged and threadedly connected to the horizontal guide rail, and the screw rod on the inner side of the horizontal guide rail is horizontally arranged and threadedly connected to the connecting seat.

[0012] By adopting the above technical solution, a screw rod is set to realize the vertical and horizontal transmission of the horizontal guide rail and the connecting seat by rotating the screw rod, and an external drive device can be connected to realize electrical control. The connecting seat can use different standard clamps as needed to facilitate clamping of different components.

[0013] The present invention is further configured as follows: an equipment seat is slidably connected to the outer side of the front bracket, and the top of the equipment seat is installed with a welding power source, a control system and a gas supply bottle of the welding machine.

[0014] By adopting the above technical solution, by providing an equipment stand, the welding machine can be easily connected or disassembled to facilitate component replacement, and the equipment stand can be slid along the front bracket to adjust the position of the welding machine.

[0015] The present invention is further configured as follows: the clamping point unit includes a tying frame, four cylinder bodies are fixedly connected to the inner side of the tying frame, a drainage rod is slidably connected to the inner side of the cylinder body, the bottom of the drainage rod is fixedly connected to a water collecting pipe, the bottom of the water collecting pipe is fixedly connected to a hose, and the inner side of the cylinder body is filled with a fluid medium.

[0016] The above technical solution is adopted, by setting up a bracket for installing four cylinders, and the set cylinders cooperate with the drainage rod to form a telescopic structure. When clamping, the end of the drainage rod contacts the welding part and retracts into the cylinder due to the force. At this time, the fluid medium inside the cylinder is squeezed and discharged from the water collecting pipe to the hose, so that the length of the cylinder and the drainage rod can fit the welding part.

[0017] The present invention is further configured as follows: a rubber plug is provided at the bottom of the drainage rod, the outer side of the rubber plug is slidingly connected to the cylinder body, the outer side of the drainage rod is fixedly connected to a raised outer edge, the bottom of the raised outer edge is provided with a reset spring, the bottom of the reset spring is in contact with the cylinder body, and the inner side of the top of the cylinder body is slidingly connected to the drainage rod through an oil seal.

[0018] By adopting the above technical solution, a reset spring is set up, so that the drain rod can be reset to a fully extended state when there is no force, and it itself has a certain load-bearing capacity, so that the drain rod at the bottom will not be completely retracted into the cylinder body when the welding parts are initially placed. The set oil seal can effectively prevent liquid leakage, and the rubber plug assists the drain rod to squeeze and drain water.

[0019] The present invention is further configured as follows: both sides of the tying frame are fixedly connected with a snap-in pin, the inner side of the snap-in pin is movably connected with a snap-in wheel, and the outer side of the snap-in wheel is snap-connected with the quick-insert frame.

[0020] By adopting the above technical solution, by setting a snap-in pin and a snap-in wheel, the clamping frame can be easily clamped into the quick-insertion frame. When clamping, the snap-in wheel moves horizontally due to the pressure against the clamping frame, and resets to clamp the structure when it moves to the inside of the quick-insertion frame to complete the assembly. Multiple clamping point units can be quickly installed as needed.

[0021] The present invention is further configured as follows: the inner side of the snap-in pin is fixedly connected to a limiting plate, the inner side of the limiting plate is fixedly connected to a pressure spring, the side of the pressure spring close to the snap wheel is in contact with the snap wheel, and a plurality of slots are provided on the inner side of the quick-insert frame, and the inner sides of the slots are used in conjunction with the snap-in pin.

[0022] By adopting the above technical solution, by setting a limit plate and a pressure spring, when the locking pin is inserted into the quick-insertion frame, the clamping wheel applies force to the pressure spring and moves horizontally along the limit plate. At this time, the pressure spring is compressed and deformed to accumulate force, and when it is clamped into the inner side of the quick-insertion frame, the clamping wheel is reset and clamped through the rebound of the pressure spring. When the entire clamping point unit needs to be removed, it can also be removed in the opposite direction of the clamping direction to save effort.

[0023] The present invention is further configured as follows: a winding frame is fixedly connected to the outer side of the top quick-insert frame, the top of the winding frame is fixedly connected to the telescopic end of the telescopic cylinder, and a padding frame is fixedly connected to the bottom of the bottom quick-insert frame.

[0024] By adopting the above technical solution, the top quick-insert frame can be easily installed by setting a winding frame, and the normal layout of the structure can be avoided from being affected. The bottom quick-insert frame can be lifted to a height that is convenient for operation by setting a cushion frame.

[0025] The present invention is further configured as follows: a sliding sleeve is fixedly connected to the right side of the winding frame, a slide is fixedly connected to the rear side of the rear bracket, the bottom of the slide is fixedly connected to the rear side of the bottom quick-insert frame, and the inner side of the sliding sleeve is slidably connected to the slide.

[0026] By adopting the above technical solution, a sliding sleeve is provided to cooperate with the slide. When the top quick-insert frame is pushed, pulled and lifted by the telescopic cylinder, the sliding sleeve slides along the slide to limit its movement, making the vertical lifting of the structure more stable.

[0027] Compared with the prior art, the present invention provides a welding structure for a turbine housing with a shape-adaptive adjustment fixture, which has the following beneficial effects:

[0028] The welding structure of the turbine casing with an adaptive shape adjustment fixture is provided, and a bracket is provided to cooperate with the crossbeam as a structural support, and a standard fixture is installed in a position convenient for operation through a sliding frame and a compensation frame. The standard fixture can be used to clamp flat parts such as top covers or bottom rings. The welding machine is suspended on the top of the front bracket to free up the ground space for loading and unloading large-sized welding workpieces, and sliding along the front bracket can facilitate adjustment according to the welding position. A telescopic cylinder is provided to push and pull the top clamping assembly so that it can be lifted and lowered vertically. The top clamping assembly and the bottom clamping assembly can clamp curved surfaces or irregular parts such as the clamped volute, and then the welding action is performed between the parts through the head part of the welding machine. The parts that are difficult to clamp and the standard flat parts are clamped in different ways, and the structural setting position is optimized, which can facilitate splicing of the welding position and facilitate single-person welding operations. When clamping the connecting parts, the welding parts can be directly placed on the clamping point unit of the bottom clamping assembly, and the top clamping assembly is pushed down by the telescopic cylinder to push the top quick-insert frame. At this time, the top clamping point unit and the bottom clamping point unit are in contact with the welding parts and deform to fit their shapes. At this time, the fluid medium discharged by the clamping point unit will be injected into the water tank through the hose, water distribution pipe and the electric three-way valve. Then the electric three-way valve is closed, so that the fluid medium cannot continue to be discharged or flow. At this time, the clamping point unit state is locked, completing the clamping action of the welding parts. After the operation is completed, the top quick-insert frame can be pulled up by the telescopic cylinder to complete the unlocking. At this time, the parts can be removed from all sides. Since they fit the curved surface or irregular welding parts, it is not easy to slip. After the clamping is completed, locking the clamping point unit can maintain the clamping force to avoid deformation and damage of the parts caused by excessive clamping force. At the same time, it can be adapted to most types of turbine casings, and the clamping replacement speed is fast, which effectively improves the efficiency of the welding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the main structure of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the clamping assembly in the present invention;

[0031] Figure 3 Schematic diagram of the structure of the pinch unit in the present invention;

[0032] Figure 4 Schematic diagram of the internal structure of the cylinder body in the present invention;

[0033] Figure 5 Schematic diagram of the structure of the locking pin in the present invention;

[0034] Figure 6 Schematic diagram of the position of the limiting plate in the present invention;

[0035] Figure 7 This is a schematic diagram of the connection of the water tank in the present invention;

[0036] Figure 8 It is a rear schematic diagram of the main structure of the present invention.

[0037] In the figure: 1. Bracket; 2. Crossbeam; 3. Clamping assembly; 31. Quick-insert frame; 32. Clamping point unit; 321. Tie frame; 322. Cylinder body; 323. Drain rod; 324. Collecting pipe; 33. Suspension frame; 34. Water tank; 35. Electric three-way valve; 36. Water distribution pipe; 37. Pump; 38. Hose; 4. Slide frame; 5. Compensation frame; 6. Standard fixture; 7. Welding machine; 8. Telescopic cylinder; 9. Vertical guide rail; 10. Horizontal guide rail; 11. Connecting seat; 12. Equipment seat; 13. Rubber plug; 14. Return spring; 15. Snap pin; 16. Card wheel; 17. Limit plate; 18. Compression spring; 19. Winding frame; 20. Pad frame; 21. Sleeve; 22. Slide. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0039] Example 1

[0040] See also Figures 1-8 A welding structure with an adaptive shape adjustment fixture for a turbine casing comprises two brackets 1, a crossbeam 2 is fixedly connected between the two brackets 1, two clamping assemblies 3 are provided at the bottom of the crossbeam 2, a sliding frame 4 is movably connected to the outer sides of the two brackets 1, a compensation frame 5 is fixedly connected between the two sliding frames 4, a standard clamp 6 is provided on the left side of the compensation frame 5, a welding machine 7 is provided on the outer side of the front bracket 1, a telescopic cylinder 8 is fixedly connected to the top of the crossbeam 2, and the telescopic end of the telescopic cylinder 8 passes through the crossbeam 2 and is movably connected to the top clamping assembly 3;

[0041] By setting a bracket 1 and a crossbeam 2 as structural support, and installing a standard fixture 6 in a convenient position through a sliding frame 4 and a compensation frame 5, the standard fixture 6 can be used to clamp flat parts such as top covers or bottom rings. The welding machine 7 is suspended on the top of the front bracket 1 to free up the ground for loading and unloading large-sized welding workpieces. At the same time, sliding along the front bracket 1 can facilitate adjustment according to the welding position. A telescopic cylinder 8 is set to push and pull the top clamping component 3 so that it can be lifted and lowered vertically. The top clamping component 3 and the bottom clamping component 3 can clamp curved surfaces or irregular parts such as the clamped volute, and then the welding action is performed between the parts through the head part of the welding machine 7. The difficult-to-clamp parts and standard flat parts are clamped in different ways, and the structural setting position is optimized, which can facilitate splicing of the welding position and facilitate single-person operation of the welding operation.

[0042] Among them, the bottom of the compensation frame 5 is fixedly connected to a vertical guide rail 9, the left side of the vertical guide rail 9 is movably connected to a horizontal guide rail 10, the inner side of the horizontal guide rail 10 is movably connected to a connecting seat 11, the left side of the connecting seat 11 and the standard fixture 6 are installed by bolts, and the horizontal guide rail 10 is arranged to adjust the horizontal position and vertical height of the standard fixture 6, which can facilitate the adjustment of the position of the standard fixture 6 and the workpiece it clamps according to needs. The inner sides of the vertical guide rails 9 and the horizontal guide rails 10 are rotatably connected with screw rods, and the inner side of the vertical guide rail 9 The screw rod is set vertically and is threadedly connected to the horizontal guide rail 10. The screw rod inside the horizontal guide rail 10 is set horizontally and is threadedly connected to the connecting seat 11. The screw rod is set to realize the vertical and horizontal transmission of the horizontal guide rail 10 and the connecting seat 11 by rotating the screw rod, and an external drive device can be connected to realize electric control. The connecting seat 11 can use different standard clamps 6 as needed to clamp different components. The outer side of the front bracket 1 is slidably connected to the equipment seat 12. The top of the equipment seat 12 is connected to the welding power supply and control of the welding machine 7. The control system and the gas supply bottle are installed. By setting the equipment seat 12, the welding machine 7 can be easily connected or disassembled to facilitate the replacement of parts, and the equipment frame can be slid along the front bracket 1 to adjust the position of the welding machine 7. The outer side of the top quick-insertion frame 31 is fixedly connected with a winding frame 19, and the top of the winding frame 19 is fixedly connected to the telescopic end of the telescopic cylinder 8. The bottom of the bottom quick-insertion frame 31 is fixedly connected with a pad frame 20. By setting the winding frame 19, the top quick-insertion frame 31 can be easily installed without affecting the normal layout of the structure. By setting up a raising frame 20, the bottom quick-insertion frame 31 is lifted to a height convenient for operation. A sliding sleeve 21 is fixedly connected to the right side of the frame 19, and a slide 22 is fixedly connected to the rear side of the rear bracket 1. The bottom of the slide 22 is fixedly connected to the rear side of the bottom quick-insertion frame 31, and the inner side of the sliding sleeve 21 is slidably connected to the slide 22. By setting the sliding sleeve 21 to cooperate with the slide 22, when the top quick-insertion frame 31 is pushed and pulled by the telescopic cylinder 8, the sliding sleeve 21 slides along the slide 22 to limit its movement, so that the vertical lifting of the structure is more stable.

[0043] The working principle of this embodiment is as follows: Two brackets 1 and a crossbeam 2 form a basic frame. The two clamping assemblies 3 at the bottom of the crossbeam 2 cooperate with a quick-insert frame 31 at the top driven by a telescopic cylinder 8 to adaptively clamp curved or irregular parts such as volutes. The telescopic cylinder 8 drives the top clamping assembly 3 to rise and fall vertically, thereby clamping and loosening the workpiece. At the same time, the sliding frame 4 on the outside of the two brackets 1 is connected to the compensation frame 5. The compensation frame 5 is driven by a screw through a vertical guide rail 9 and a horizontal guide rail 10, which can accurately adjust the horizontal position and vertical height of the standard clamp 6 to adapt to flat parts of different specifications, such as top covers and bottom rings. The equipment seat 12 slidingly connected to the outside of the front bracket 1 is used to install the power supply, control system and gas supply cylinder of the welding machine 7. It can slide along the bracket 1 to adjust the welding position. The top quick-insert frame 31 is connected to the telescopic cylinder 8 through a winding frame 19, and cooperates with the sliding sleeve 21 and slide 22 to achieve stable vertical lifting. The bottom quick-insert frame 31 is lifted to the appropriate working height by the support frame 20.

[0044] Example 2

[0045] refer to Figure 1-6 A welding structure for a turbine casing having an adaptive shape adjustment fixture further includes a clamping assembly 3, wherein the clamping assembly 3 includes a quick-insertion frame 31, a clamping unit 32 is clamped on the inner side of the quick-insertion frame 31, a hanging bracket 33 is fixedly connected to the outer side of the quick-insertion frame 31, a water tank 34 is fixedly connected to the inner side of the hanging bracket 33, an electric-controlled three-way valve 35 is fixedly connected to the side of the water tank 34 near the clamping unit 32, a water distribution pipe 36 is fixedly connected to the top of the electric-controlled three-way valve 35, a pump 37 is fixedly connected to the other end of the electric-controlled three-way valve 35, an input end of the pump 37 is fixedly connected to the water tank 34, a hose 38 is fixedly connected to the side of the water distribution pipe 36 near the clamping unit 32, and the hose 38 is in communication with the clamping unit 32;

[0046] When the welding part is clamped by the clamping assembly 3, the welding part can be directly placed on the clamping point unit 32 of the bottom clamping assembly 3, and the top clamping assembly 3 is pushed down by the telescopic cylinder 8 to push the top quick-insertion frame 31. At this time, the top clamping point unit 32 and the bottom clamping point unit 32 are in contact with the welding part and deform to fit its shape. At this time, the fluid medium discharged by the clamping point unit 32 will be injected into the water tank 34 through the hose 38, the water distribution pipe 36 and the electric three-way valve 35. Then the electric three-way valve 35 is closed, so that the fluid medium can no longer be discharged or flow. At this time, the clamping point unit 32 is locked, completing the clamping action for the welding component. After the operation is completed, the top quick-insertion frame 31 can be pulled up by the telescopic cylinder 8 to complete the unlocking. At this time, the component can be removed from all sides. Since it fits the curved surface or irregular welding components, it is not easy to slip. After the clamping is completed, locking the clamping point unit 32 can maintain the clamping force to avoid deformation and damage of the component caused by excessive clamping force. At the same time, it can adapt to most types of turbine casings, and the clamping and replacement speed is fast, which effectively improves the efficiency of the welding operation.

[0047] Among them, the clamping unit 32 includes a tying frame 321, the inner side of the tying frame 321 is fixedly connected with four cylinders 322, the inner side of the cylinder 322 is slidably connected with a drainage rod 323, the bottom of the drainage rod 323 is fixedly connected with a water collecting pipe 324, the bottom of the water collecting pipe 324 is fixedly connected to the hose 38, the inner side of the cylinder 322 is filled with a fluid medium, and the tying frame 321 is provided for installing the four cylinders 322. The provided cylinders 322 cooperate with the drainage rod 323 to form a telescopic structure. When clamping, the end of the drainage rod 323 contacts the welding component and retracts into the cylinder 322 due to the force. At this time, the fluid medium inside the cylinder 322 is squeezed and discharged from the water collecting pipe 324 to The hose 38 is so that the length of the cylinder body 322 and the drain rod 323 can fit the welding parts. The bottom of the drain rod 323 is provided with a rubber plug 13. The outer side of the rubber plug 13 is slidably connected to the cylinder body 322. The outer side of the drain rod 323 is fixedly connected with a raised outer edge. The bottom of the raised outer edge is provided with a return spring 14. The bottom of the return spring 14 is in contact with the cylinder body 322. The inner side of the top of the cylinder body 322 is slidably connected to the drain rod 323 through an oil seal. By providing the return spring 14, the drain rod 323 can be reset to a fully extended state without force, and it has a certain load-bearing capacity, so that the drain rod 323 at the bottom will not be completely retracted into the cylinder when the welding parts are initially placed. The oil seal provided in the body 322 can effectively prevent leakage, and the rubber plug 13 assists the drainage rod 323 to squeeze and drain water. Both sides of the bracket 321 are fixedly connected with a clamping pin 15, and the inner side of the clamping pin 15 is movably connected with a clamping wheel 16. The outer side of the clamping wheel 16 is clamped with the quick-insertion frame 31. By setting the clamping pin 15 to cooperate with the clamping wheel 16, the bracket 321 can be easily clamped into the quick-insertion frame 31. When clamped in, the clamping wheel 16 moves horizontally due to the pressure against the bracket 321, and resets to clamp the structure when it is displaced to the inner side of the quick-insertion frame 31 to complete the assembly. Multiple clamping point units 32 can be quickly installed as needed. The inner side of the clamping pin 15 is fixedly connected to a limited The positioning plate 17 and the inner side of the limiting plate 17 are fixedly connected with a pressure spring 18, and the pressure spring 18 contacts the card wheel 16 on the side close to the card wheel 16. A number of slots are provided on the inner side of the quick-insertion frame 31, and the inner sides of the slots are used in conjunction with the card pin 15. By setting the limiting plate 17 and cooperating with the pressure spring 18, the card wheel 16 can apply force to the pressure spring 18 when the card pin 15 is inserted into the quick-insertion frame 31, and move horizontally along the limiting plate 17. At this time, the pressure spring 18 is compressed and deformed to accumulate force, and when it is clamped into the inner side of the quick-insertion frame 31, the card wheel 16 is reset and clamped by the rebound of the pressure spring 18. When the entire clamping point unit 32 needs to be removed, it can also be removed from the reverse direction of the clamping direction to save effort.

[0048] The working principle of this embodiment is as follows: when in use, the welding parts are clamped by the top clamping point assembly and the bottom clamping point assembly. When the telescopic cylinder 8 drives the top quick-insertion frame 31 to descend, the drainage rods 323 of the bottom and top clamping point units 32 contact the workpiece and are forced to retract into the cylinder body 322. The fluid in the cylinder is discharged into the water tank 34 through the water collection pipe 324 and the hose 38. Each drainage rod 323 automatically adjusts the extension length according to the curved surface of the workpiece. After the electric three-way valve 35 is closed, the fluid circuit is locked to form a stable and flexible support to avoid deformation caused by rigid clamping. The clamping point unit 32 The quick-connect connection with the quick-insert frame 31 is achieved through the snap-in pin 15. When inserted, the card wheel 16 is squeezed and compressed against the spring 18 and moves horizontally. After entering the slot, the spring rebounds and locks it. When disassembling, it can be detached by applying reverse force. The rubber plug 13 at the bottom of the drain rod 323 and the oil seal at the top of the cylinder body 322 ensure that there is no leakage of the medium. The reset spring 14 makes the drain rod 323 automatically extend and reset when there is no load. The pump 37 can assist the fluid backflow. The electronically controlled three-way valve 35 accurately controls the locking and release of the clamping force, thereby achieving high-precision fitting of complex surfaces and rapid adjustment and reuse of the fixture.

[0049] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding structure for a turbine housing having a self-adaptive shape adjustment fixture, comprising two brackets (1), characterized in that: A crossbeam (2) is fixedly connected between the two brackets (1), two clamping assemblies (3) are provided at the bottom of the crossbeam (2), a sliding frame (4) is movably connected to the outer sides of the two brackets (1), a compensation frame (5) is fixedly connected between the two sliding frames (4), a standard clamp (6) is provided on the left side of the compensation frame (5), a welding machine (7) is provided on the outer side of the front bracket (1), a telescopic cylinder (8) is fixedly connected to the top of the crossbeam (2), and the telescopic end of the telescopic cylinder (8) passes through the crossbeam (2) and is movably connected to the top clamping assembly (3); The clamping assembly (3) comprises a quick-insert frame (31), the inner side of the quick-insert frame (31) is clamped with a clamping point unit (32), the outer side of the quick-insert frame (31) is fixedly connected to a suspension frame (33), the inner side of the suspension frame (33) is fixedly connected to a water tank (34), the side of the water tank (34) close to the clamping point unit (32) is fixedly connected to an electric-controlled three-way valve (35), the top of the electric-controlled three-way valve (35) is fixedly connected to a water distribution pipe (36), the other end of the electric-controlled three-way valve (35) is fixedly connected to a pump (37), the input end of the pump (37) is fixedly connected to the water tank (34), the side of the water distribution pipe (36) close to the clamping point unit (32) is fixedly connected to a hose (38), and the hose (38) is communicated with the clamping point unit (32); The bottom of the compensation frame (5) is fixedly connected to a vertical guide rail (9), the left side of the vertical guide rail (9) is movably connected to a horizontal guide rail (10), the inner side of the horizontal guide rail (10) is movably connected to a connecting seat (11), and the left side of the connecting seat (11) and the standard fixture (6) are installed by bolts; The inner sides of the vertical guide rail (9) and the horizontal guide rail (10) are both rotatably connected with screw rods, the screw rod inside the vertical guide rail (9) is vertically arranged and threadedly connected to the horizontal guide rail (10), and the screw rod inside the horizontal guide rail (10) is horizontally arranged and threadedly connected to the connecting seat (11); The outer side of the front bracket (1) is slidably connected to an equipment seat (12), and the top of the equipment seat (12) and the welding power supply, control system and gas supply bottle of the welding machine (7) are installed; The clamping point unit (32) comprises a tying frame (321), four cylinder bodies (322) are fixedly connected to the inner side of the tying frame (321), drainage rods (323) are slidably connected to the inner side of the cylinder bodies (322), the bottom of the drainage rods (323) is fixedly connected to a water collecting pipe (324), the bottom of the water collecting pipe (324) is fixedly connected to a hose (38), and the inner side of the cylinder bodies (322) is filled with a fluid medium; A rubber plug (13) is provided at the bottom of the drainage rod (323), and the outer side of the rubber plug (13) is slidably connected to the cylinder body (322). A raised outer edge is fixedly connected to the outer side of the drainage rod (323), and a return spring (14) is provided at the bottom of the raised outer edge. The bottom of the return spring (14) is in contact with the cylinder body (322), and the inner side of the top of the cylinder body (322) is slidably connected to the drainage rod (323) through an oil seal.

2. A welding structure with a self-adaptive shape adjustment fixture for a turbine housing according to claim 1, characterized in that: Both sides of the clamping frame (321) are fixedly connected with a clamping pin (15), the inner side of the clamping pin (15) is movably connected with a clamping wheel (16), and the outer side of the clamping wheel (16) is clamped with the quick-insertion frame (31).

3. A welding structure with a self-adaptive shape adjustment fixture for a turbine housing according to claim 2, characterized in that: The inner side of the engaging pin (15) is fixedly connected to a limiting plate (17), and the inner side of the limiting plate (17) is fixedly connected to a pressure spring (18). The pressure spring (18) contacts the card wheel (16) on the side close to the card wheel (16). The inner side of the quick-insertion frame (31) is provided with a plurality of slots, and the inner sides of the slots cooperate with the engaging pin (15).

4. The welding structure with a self-adaptive shape adjustment fixture for a turbine housing according to claim 1, characterized in that: The outer side of the top quick-insert frame (31) is fixedly connected to a winding frame (19), the top of the winding frame (19) is fixedly connected to the telescopic end of the telescopic cylinder (8), and the bottom of the bottom quick-insert frame (31) is fixedly connected to a raising frame (20).

5. A welding structure with a self-adaptive shape adjustment fixture for a turbine housing according to claim 4, characterized in that: The right side of the winding frame (19) is fixedly connected to a sliding sleeve (21), the rear side of the rear bracket (1) is fixedly connected to a sliding frame (22), the bottom of the sliding frame (22) is fixedly connected to the rear side of the bottom quick-insertion frame (31), and the inner side of the sliding sleeve (21) is slidably connected to the sliding frame (22).

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