Tooling for welding turbine blade and shroud

Abstract

The application provides a tool for welding turbine blade and cover plate, which is simple in structure and convenient to operate. The tool comprises a base, an upper convex guide rod arranged on the base, a blade bottom positioning tool, a blade upper segment positioning tool, a cover plate clamping seat and a cover plate position adjusting assembly. The blade bottom positioning tool comprises a first tool body and a second tool body, and the cavity of the first tool body and the second tool body after splicing is used for positioning the bottom position of the blade. The blade tip of the blade penetrates the open end of the cavity and protrudes upward after the blade tip is arranged vertically in the assembled state. The blade upper segment positioning tool comprises a third tool body and a fourth tool body, and the penetrating cavity of the third tool body and the fourth tool body after splicing is used for positioning the middle segment position of the blade in the height direction. The cover plate clamping seat comprises a fixed clamping plate, a sliding clamping plate and a support plate. The lower surface of the support plate is provided with the fixed clamping plate at one end and the sliding clamping plate at the other end. The sliding clamping plate is arranged opposite to the fixed clamping plate and forms a clamping space. The clamping space is used for clamping the cover plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turbine blade assembly, in particular to a tool for welding turbine blade and cover plate. BACKGROUND

[0002] Turbine blade is a key part of gas turbine, and its temperature resistance is an important indicator for evaluating the performance and service life of the gas turbine. In order to improve the temperature resistance of the blade, in addition to improving the alloy composition and improving the high temperature resistance of the material, improving the cooling structure of the blade is also an important way. The existing turbine blade is composed of a blade and a cover plate, and the existing welding is carried out by placing the blade horizontally, inserting and aligning the cover plate and the blade, and then welding. Since the blade is placed horizontally, it may swing, and the gap between the cover plate and the blade may change, thereby causing uneven welding. Therefore, it is urgent to develop a tool for welding turbine blade and cover plate, which can prevent the blade and the cover plate from swinging during welding, thereby ensuring uniform and reliable welding. SUMMARY

[0003] In view of the above problems, the present application provides a tool for welding turbine blade and cover plate, which has simple structure and convenient operation, and good fitting effect of the blade and the cover plate, thereby reducing defects and improving the performance of the blade.

[0004] A tool for welding turbine blade and cover plate, characterized in that it comprises:

[0005] a base provided with an upward guide rod;

[0006] a blade bottom positioning tool comprising a first tool body and a second tool body, the cavity of the first tool body and the second tool body after splicing is used for positioning the bottom position of the blade, the blade tip of the blade protrudes upward after penetrating the open cavity, and the blade is arranged vertically in the assembled state;

[0007] a blade upper segment positioning tool comprising a third tool body and a fourth tool body, the penetrating cavity of the third tool body and the fourth tool body after splicing is used for positioning the middle segment position of the height direction of the blade;

[0008] a cover plate clamping seat comprising a fixed clamping plate, a sliding clamping plate and a support plate, the lower surface of the support plate is provided with a protruding fixed clamping plate at one end and a protruding sliding clamping plate at the other end, the sliding clamping plate is arranged opposite to the fixed clamping plate and forms a clamping space, and the clamping space is used for clamping the cover plate;

[0009] and a cover plate position adjusting assembly comprising a connecting rod, a rotating bolt, a rotating rod and an angle adjusting mechanism;

[0010] The guide section of the connecting rod is sleeved on the upper part of the guide rod, the connecting rod is horizontally arranged, one end of the connecting rod is connected with a vertical driving device, and the other end of the connecting rod is pivotally connected with the upper end of the rotating rod;

[0011] The rotating bolt drives the upper end of the rotating rod to rotate, the lower end of the rotating rod is provided with an angle adjusting mechanism, and the output end of the angle adjusting mechanism is connected with the cover plate clamping seat;

[0012] The two tool bodies of the blade bottom positioning tool are respectively fastened to the upper surface of the base through fasteners, so that the positioning position of the bottom of the blade is stable and reliable;

[0013] The guide rod is provided with a transverse guide rod at a position corresponding to the position of the blade upper section positioning tool, the back surfaces of the third tool body and the fourth tool body are clamped with the transverse guide rod and horizontally arranged, and after the blade is arranged upwardly, the third tool body and the fourth tool body are moved to the middle and then fastened, so that the auxiliary positioning of the blade in the height direction is completed.

[0014] It is further characterized in that:

[0015] The sliding clamping plate and the support plate are connected and arranged through a first guide rail structure, the cover plate clamping seat further comprises a clamping bolt, and the length direction two ends of the clamping bolt are respectively connected with the inner end positions of the clamping spaces of the sliding clamping plate and the fixed clamping plate;

[0016] First gaskets are respectively arranged on the opposite surfaces of the sliding clamping plate and the fixed clamping plate, so that the clamping does not damage the cover plate;

[0017] After the first tool body and the second tool body are spliced in place, protruding tool fixing bolts are arranged at the opposite positions of the front part and the rear part of the first tool body and the second tool body, and the tool fixing bolts lock the first tool body and the second tool body;

[0018] The angle adjusting mechanism comprises a rotating positioning wheel and an outward protruding handle, the rotating positioning wheel is supported on the lower end of the rotating rod and is arranged to rotate around the central shaft of the rotating rod under the action of external force, a plurality of outward protruding handles are arranged on the outer ring of the rotating positioning wheel, the lower end of the rotating positioning wheel is protrusively connected with a connecting shaft, a protruding connecting shaft is arranged at the outer end of the connecting shaft in the radial direction, and the end of the protruding connecting shaft is fastened with the support plate;

[0019] The third tool body and the fourth tool body are respectively fastened with a profiling seat body, two profiling seat bodies are spliced to form a profiling groove corresponding to the outer periphery of the blade at the corresponding height, the profiling seat body is convenient to replace, and together with the first tool body and the second tool body which can be quickly replaced, the universality of the whole structure is good.

[0020] After the application, firstly, the first tooling body is fixed at the set position, and the second tooling body, the third tooling body and the fourth tooling body are opened, the bottom of the blade is fixed on the first tooling body, then the second tooling body is positioned at the bottom of the blade, then the second tooling body is fixed, then the third tooling body and the fourth tooling body are horizontally positioned and spliced and locked, so that the height direction of the blade is stably positioned, then the cover plate is fixed in the clamping space of the cover plate clamping seat, the screw rotating rotating rod is rotated, the cover plate is located directly above the top of the blade, then the relative angle position of the cover plate and the blade is adjusted through the angle adjusting mechanism, then the cover plate is accurately matched with the position of the cover plate and the top of the blade through the vertical driving device, finally, the cover plate is welded and fixed through the manual argon arc welding method, after the completion, the clamp is moved, and the next cover plate is welded. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the three-dimensional view of the application Figure 1 ;

[0022] Figure 2 is a partial view of the blade and the cover plate assembled in the application;

[0023] Figure 3 is an assembly view of the rotating shaft, the angle adjusting mechanism and the cover plate clamping seat of the application;

[0024] Figure 4 is an enlarged structural view of the cover plate clamping seat of the application. DETAILED DESCRIPTION

[0025] A tooling for welding turbine blade and cover plate, see Figures 1-4 , which comprises a base 10, a blade bottom positioning tool 20, a blade upper segment positioning tool 30, a cover plate clamping seat 40 and a cover plate position adjusting assembly 50.

[0026] The base 10 is provided with an upward guide rod 11;

[0027] The blade bottom positioning tool 20 comprises a first tooling body 21 and a second tooling body 22, the cavity of the spliced first tooling body 21 and the second tooling body 22 is used for positioning the bottom position of the blade 1, the top of the blade 1 is protruded upward after penetrating the open cavity, and the blade 1 is vertically arranged in the assembled state.

[0028] The blade upper segment positioning tool 30 comprises a third tooling body 31 and a fourth tooling body 32, the penetrating cavity of the spliced third tooling body 31 and the fourth tooling body 32 is used for positioning the middle segment position of the height direction of the blade.

[0029] The cover plate clamping seat 40 comprises a fixed clamping plate 41, a sliding clamping plate 42, and a support plate 43. The support plate 43 is provided with the fixed clamping plate 41 at one end thereof in the length direction facing the blade bottom positioning tool 20, and is provided with the sliding clamping plate 42 at the other end thereof. The sliding clamping plate 42 is arranged towards the fixed clamping plate 41 and forms a clamping space for clamping the cover plate 2. The cover plate position adjusting assembly 50 comprises a connecting rod 60, a rotating bolt 70, a rotating rod 80, and an angle adjusting mechanism 90.

[0030] The guide section 61 of the connecting rod 60 is sleeved on the upper portion of the guide rod 11. The connecting rod 60 is arranged horizontally. One end of the guide section 61 of the connecting rod 60 is connected with a vertical driving device. In a specific implementation, the vertical driving device is a lifting cylinder 62. The guide rod is of a rectangular cross section. Therefore, the lifting of the connecting rod 60 will not cause rotation. The other end of the connecting rod 60 is pivotally connected with the upper end of the rotating rod 80.

[0031] The rotating bolt 70 drives the upper end of the rotating rod 80 to rotate. The lower end of the rotating rod 80 is provided with the angle adjusting mechanism 90. The output end of the angle adjusting mechanism 90 is connected with the cover plate clamping seat 40.

[0032] The two tool bodies of the blade bottom positioning tool 20 are respectively fixed to the upper surface of the base 10 through the side convex seat body 23 and fasteners. Therefore, the positioning position of the bottom of the blade 1 is stable and reliable.

[0033] The guide rod 11 is provided with a transverse guide rod 12 at a position corresponding to the position of the blade upper segment positioning tool 30. The back surfaces of the third tool body 31 and the fourth tool body 32 are clamped on the transverse guide rod 12 and are arranged to move horizontally. After the blade 1 is arranged upwardly, the third tool body 31 and the fourth tool body 32 are moved towards the middle and then are fastened, thereby completing the auxiliary positioning of the blade in the height direction.

[0034] In a specific implementation, the sliding clamping plate 42 and the support plate 43 are connected and arranged through the first guide rail structure 44. The cover plate clamping seat 40 further comprises a pressing bolt 45. The length direction two ends of the pressing bolt 45 are respectively connected with the inner end positions of the clamping spaces of the sliding clamping plate 42 and the fixed clamping plate 41.

[0035] The opposite surfaces of the sliding clamping plate 42 and the fixed clamping plate 41 are respectively provided with first backing plates 46, so as to ensure that the clamping will not damage the cover plate 2.

[0036] After the first tool body 21 and the second tool body 22 are combined in place, the front and rear opposite positions of the first tool body 21 and the second tool body 22 are provided with protruding tool fixing bolts 100. The tool fixing bolts 100 lock the first tool body 21 and the second tool body 22.

[0037] The third tooling body 31 and the fourth tooling body 32 are provided with protruding tooling fixing bolts 100 at the front and rear positions of the third tooling body 31 and the fourth tooling body 32 after being spliced in place, and the tooling fixing bolts 100 lock the third tooling body 31 and the fourth tooling body 32;

[0038] The angle adjusting mechanism 90 comprises a rotating positioning wheel 91 and an outward protruding handle 92, the rotating positioning wheel 91 is supported on the lower end of the rotating rod 80 and is arranged to rotate around the central axis of the rotating rod 80 under the action of external force, a plurality of outward protruding handles 92 are arranged on the outer ring of the rotating positioning wheel 91, the lower end of the rotating positioning wheel 91 is protrusively connected to a connecting shaft 93, the outer end of the connecting shaft 93 is radially and centrally provided with a protruding connecting shaft 94, and the end of the protruding connecting shaft 94 is fixedly connected to the support plate 43; in specific implementation, the protruding connecting shaft 94 and the connecting shaft 93 are coaxially arranged, and the outer diameter of the protruding connecting shaft 94 is smaller than the outer diameter of the connecting shaft 93.

[0039] The first profiling seat body 33 and the second profiling seat body 34 are respectively fixed in the third tooling body 31 and the fourth tooling body 32, and the two profiling seat bodies are spliced to form a profile groove which is profiled on the corresponding height of the outer periphery of the blade 1, the profiling seat body is convenient to replace, and together with the first tooling body 21 and the second tooling body 22 which can be quickly replaced, the universality of the whole structure is good.

[0040] In specific implementation, the support block 13 is further arranged at each corner position of the base 10, and the support block 13 is mainly used to support the base 10 and prevent the base 10 from being damaged.

[0041] After the application, first, the first tooling body is fixed at a set position, and the second tooling body, the third tooling body and the fourth tooling body are opened, the bottom of the blade is fixed on the first tooling body, then the second tooling body is positioned at the bottom of the blade, and then the second tooling body is fixed, then the third tooling body and the fourth tooling body are horizontally positioned and spliced and locked, so that the blade is stably positioned in the height direction, then the cover plate is fixed in the clamping space of the cover plate clamping seat, the rotating screw is rotated to rotate the rotating rod, so that the cover plate is located directly above the top of the blade, then the relative angle position of the cover plate and the blade is adjusted through the angle adjusting mechanism, then the cover plate is accurately matched with the position of the blade top through the vertical driving device, finally, the cover plate is welded and fixed through the manual argon arc welding method, after completion, the clamp is moved to weld the next cover plate. The position of the blade is stably and reliably ensured through two position positioning in the height direction, and then the position of the cover plate and the blade top is positioned, the structure is simple, the operation is convenient, the blade and the cover plate are well matched, defects are reduced, and the use performance of the blade is improved.

[0042] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0043] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A tool for welding a turbine blade and a shroud, characterized by, It includes: The base is provided with an upper convex guide rod; The blade bottom positioning tool includes a first tool body and a second tool body, and the cavity of the combined first tool body and second tool body is used to position the bottom position of the blade. The tip of the blade is upwardly convex after penetrating the open cavity, and the blade is vertically arranged in the assembled state. The blade upper segment positioning tool includes a third tool body and a fourth tool body, and the penetrating cavity of the combined third tool body and fourth tool body is used to position the middle segment position of the blade in the height direction. The cover plate clamping seat includes a fixed clamping plate, a sliding clamping plate, and a support plate. The lower surface of the support plate is provided with a convex fixed clamping plate at one end and a convex sliding clamping plate at the other end. The sliding clamping plate is arranged opposite to the fixed clamping plate and forms a clamping space. The clamping space is used to clamp the cover plate. The cover plate position adjusting assembly includes a connecting rod, a rotating bolt, a rotating rod, and an angle adjusting mechanism. The guide section of the connecting rod is sleeved on the upper part of the guide rod. The connecting rod is horizontally arranged. One end of the connecting rod is connected with a vertical driving device. The other end of the connecting rod is pivotally connected with the upper end of the rotating rod. The rotating bolt drives the upper end of the rotating rod to rotate. The lower end of the rotating rod is provided with an angle adjusting mechanism. The output end of the angle adjusting mechanism is connected with the cover plate clamping seat. The two tool bodies of the blade bottom positioning tool are respectively fastened to the upper surface of the base by fasteners, so that the positioning position of the bottom of the blade is stable and reliable. The guide rod is provided with a transverse guide rod at a position corresponding to the blade upper segment positioning tool. The back surfaces of the third tool body and the fourth tool body are clamped with the transverse guide rod and are horizontally arranged. After the blade penetrates upward, the third tool body and the fourth tool body are moved towards the middle and then fastened, completing the auxiliary positioning of the blade in the height direction. The sliding clamping plate and the support plate are connected by a first guide rail structure. The cover plate clamping seat further includes a tightening bolt. The lengthwise ends of the tightening bolt are respectively connected with the inner end positions of the clamping spaces of the sliding clamping plate and the fixed clamping plate. The angle adjusting mechanism includes a rotating positioning wheel and an outward convex handle. The rotating positioning wheel is supported on the lower end of the rotating rod and is rotatably arranged around the central axis of the rotating rod under external force. The outer ring of the rotating positioning wheel is provided with a plurality of outward convex handles. The lower end of the rotating positioning wheel is convexly connected with a connecting shaft. The outer end of the connecting shaft is provided with a convex connecting shaft in the radial center. The end of the convex connecting shaft is fastened with the support plate.

2. A tool for welding turbine blade and shroud plates as defined in claim 1, characterized in that: The opposite surfaces of the sliding clamping plate and the fixed clamping plate are respectively provided with first spacers.

3. A tool for welding turbine blade and shroud plates as defined in claim 1, wherein: After the first tool body and the second tool body are combined in place, the front and rear opposite positions of the first tool body and the second tool body are provided with convex tool fixing bolts. The tool fixing bolts lock the first tool body and the second tool body.

4. A tool for welding turbine blade and shroud plates as defined in claim 1, wherein: The third tool body and the fourth tool body are respectively fastened with profiled seat bodies. The two profiled seat bodies are spliced to form a profiled groove which is profiled on the outer periphery of the blade at the corresponding height.

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