A crack detection device for engine turbine guide blades

Abstract

The present invention relates to the technical field of turbine guide blades, and specifically to an engine turbine guide blade crack detection device, comprising a base, the top of the base being movably connected to a turbine fixing mechanism, the top middle portion of the base being fixed with a detection mechanism, the rear side of the detection mechanism being fixedly connected with a control mechanism, and the turbine fixing mechanism comprising a moving assembly. The present invention realizes all-round scanning of the turbine guide blades from the inside to the outside by providing a base, a turbine fixing mechanism, a detection mechanism and a control mechanism, which not only improves the accuracy and efficiency of detection, but also enhances the applicability and accuracy of the detection device. The operation process of the device is simple and quick, and the turbine guide blade to be detected only needs to be fixed on the turbine clamping disk. Through a series of mechanical transmissions, the blade can be moved, scanned and detected. At the same time, the design of the expansion rod in the device enables the spacing of the laser beam heads to be flexibly adjusted according to the width of the blade.

Description

Technical Field

[0001] The present invention relates to the technical field of turbine guide blades, and more particularly to a crack detection device for engine turbine guide blades. Background Art

[0002] Engine turbine guide vanes refer to key components used in gas turbine engines. Their main function is to guide the airflow into the turbine section and ensure that the airflow is evenly distributed on the turbine rotor blades, thereby improving the efficiency of the turbine. These blades are usually made of high-temperature alloys or ceramic materials to withstand extreme working conditions under high temperature and high pressure environments. After processing, turbine rotor blades need to undergo rigorous inspection to ensure their quality and reliability. Traditional inspection methods may involve manual visual inspection or the use of some basic inspection tools, but these methods are often inefficient and prone to errors.

[0003] According to patent document CN114216960B, a nondestructive testing device for turbine blade cracks is disclosed. The device is symmetrically arranged as a whole and includes a clamping plate, a support device, a tensioning spring, a connecting bolt, a movable hinge, and a composite probe. The two sides of the support device are movably connected to the two clamping plates via corresponding movable hinges, and the two sides of the support device are also movably connected to the two clamping plates via corresponding tensioning springs. A composite probe is provided below the support device, and the two sides of the composite probe are movably connected to the two clamping plates via corresponding connecting bolts. The turbine blade is placed on the lower surface of the composite probe, and the support device is pressed downward, which changes the relative positions of the clamping plate, the support device, and the composite probe, and the composite probe undergoes elastic deformation, so that the lower surface of the composite probe is tightly fitted to the surface of the turbine blade. The operation of the composite probe realizes nondestructive testing of the turbine blade surface. The present invention improves the efficiency of nondestructive testing of turbine blades and has certain engineering significance.

[0004] Before turbine guide blades are put into use after processing, they usually need to be inspected for cracks on their surface to ensure their quality and safety. The commonly used inspection method for turbine guide blades is through X-ray scanning. Turbines generally have wraparound assembled blades. Although X-ray scanning can inspect multiple blades, the range of each scan is limited. Multiple scans are required to complete the inspection of the entire turbine, which greatly increases the time and cost of inspection. It is impossible to perform a comprehensive scan of the entire turbine at one time, which not only increases the inspection time, but may also lead to blind spots in the inspection and miss potential cracks. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an engine turbine guide vane crack detection device. The technical problem to be solved by the present invention is: turbines generally have surround-type assembled blades. Although X-ray scanning detection can detect multiple blades, the range of each scan is limited. Multiple scans are required to complete the detection of the entire turbine, which greatly increases the detection time and cost. It is impossible to perform a one-time comprehensive scan of the entire turbine, which not only increases the detection time, but may also lead to blind spots in detection and miss potential cracks.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An engine turbine guide vane crack detection device comprises a base, a turbine fixing mechanism movably connected to the top of the base, a detection mechanism fixed to the middle of the top of the base, and a control mechanism fixedly connected to the rear side of the detection mechanism;

[0008] The turbine fixing mechanism includes a moving component, and the inner wall of the moving component is movably connected to a connecting component;

[0009] The detection mechanism includes two inverted L-shaped support plates, the bottoms of the two inverted L-shaped support plates are respectively fixedly connected to the middle parts of the outer sides of the two L-shaped connecting plates, the tops of the two inverted L-shaped support plates are fixedly connected to the sides close to each other with side plates, the inner walls of the two side plates are rotatably connected to the rotating roller rods, and the rotating roller rods are fixedly connected to the outer walls of one side of the inner sides of the two side plates with rotating rollers;

[0010] The control mechanism includes two L-shaped base plates, the front sides of the two L-shaped base plates are respectively fixedly connected to the middle part of the rear sides of the two inverted L-shaped support plates, and the sides of the top rear sides of the two L-shaped base plates close to each other are fixedly connected to turntable rod connecting blocks, and the inner walls of the two turntable rod connecting blocks are rotatably connected to the turntable rod.

[0011] As a further solution of the present invention: the base includes a bottom plate, and the left and right sides of the top of the bottom plate are respectively fixedly connected with L-shaped connecting plates, the tops of the two L-shaped connecting plates are fixedly connected with guide rail rods, the outer tops of the two guide rail rods are fixedly connected with L-shaped guide side plates, and the left side of the left L-shaped guide side plate is fixedly connected with a rack.

[0012] As a further solution of the present invention: the moving component includes an external connecting plate, and the left and right sides of the external connecting plate are respectively fixedly connected with a horizontal connecting plate, and the front and rear sides of the two horizontal connecting plates are fixedly connected with L-shaped connecting rods, and the bottom middle parts of the two L-shaped connecting rods are respectively slidably connected to the tops of the two guide rail rods, and the left and right sides of the rear side of the external connecting plate are respectively provided with splicing grooves, and the left and right sides of the inner walls of the two splicing grooves are provided with limiting grooves.

[0013] As a further solution of the present invention: the left sides of the two L-shaped connecting rods on the left are fixedly connected to a gear connecting frame, a gear extension groove is opened at the bottom of the moving assembly, and the front and rear sides of the top of the gear connecting frame are respectively fixedly connected to vertical plates, and the tops of the two vertical plates are fixedly connected to hydraulic push rod connecting blocks, the inner wall of the hydraulic push rod connecting block is fixedly connected to the hydraulic push rod, and the bottom end of the hydraulic push rod is fixedly connected to a push plate, the outer wall of the push plate is slidably connected to the inner side of the two vertical plates, and the bottom of the push plate is fixedly connected to a gear motor, and the output end of the gear motor extends to the bottom of the gear connecting frame through the gear extension groove and is fixedly connected to a gear, and the outer wall of the gear is meshed with the outer wall of the rack.

[0014] As a further solution of the present invention, the flip control assembly includes a control assembly bottom plate, the top rear side of the control assembly bottom plate is fixedly connected to the bottom front side of the external plate, the rear side of the control assembly bottom plate is fixedly connected to the motor connecting plate, the top of the motor connecting plate is fixedly connected to the motor, the middle part of the top front side of the control assembly bottom plate is fixedly connected to the U-shaped connecting plate, the top of the U-shaped connecting plate is fixedly connected to the adapter block, the output end of the motor extends to the rear side of the U-shaped connecting plate and is fixedly connected to the rotating rod at the rear bottom side of the rotating rod, the inner wall of the adapter block is rotatably connected to the fan-shaped gear rotating rod, the outer wall rear side of the fan-shaped gear rotating rod is fixedly connected to the fan-shaped gear connecting ring, the outer wall bottom of the fan-shaped gear connecting ring is fixedly connected to the fan-shaped gear, the bottom of the middle part of the outer wall of the fan-shaped gear rotating rod is fixedly connected to the sliding slot rod, and the inner wall of the sliding slot rod is rotatably connected to the outer wall of the columnar rotating block.

[0015] As a further solution of the present invention: the inner wall of the second adapter block is rotatably connected to a cylindrical rotating rod, the front end of the cylindrical rotating rod is fixedly connected to a second gear, the outer wall of the second gear is engaged with the bottom of the fan-shaped tooth, and the rear end of the cylindrical rotating rod extends to the inner wall of the external plate and is fixedly connected to the front side of the outer wall of the turbine clamping disk.

[0016] As a further solution of the present invention: the front sides of the two inverted L-shaped vertical support plates close to each other are fixedly connected with columnar guide connecting rods, the top and bottom of the inner sides of the two columnar guide connecting rods are fixedly connected with columnar guide rods, the right side of the top of the right inverted L-shaped vertical support plate is fixedly connected with a second motor connecting seat, the top of the second motor connecting seat is fixedly connected with a second motor, the output end of the second motor is fixedly connected to the right end of the rotating roller rod, the outer wall of the rotating roller rod is fixedly connected with transmission disks on both sides of the outer sides of the two side plates, and a plurality of inclined slide grooves are provided on the left and right sides of the outer wall of the rotating roller, and the inclinations of the left and right groups of the inclined slide grooves are opposite.

[0017] As a further solution of the present invention: the left and right sides of the outer walls of the two columnar guide rods are slidably connected with expansion rods, the rear sides of the two groups of expansion rods are fixedly connected with expansion rod blocks, the outer walls of the two groups of expansion rod blocks are slidably connected to the inner walls of the inclined slide grooves, and the front sides of the two groups of expansion rods are fixedly connected with laser beam heads.

[0018] The two wheels are locked and the two guide wheels are locked. The two wheels are locked and the two guide wheels are locked.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention, by providing a base, a turbine fixing mechanism, a detection mechanism, and a control mechanism, achieves all-round scanning of the turbine guide blades from the inside out, thereby improving not only the accuracy and efficiency of detection, but also the applicability and accuracy of the detection device. The operation process of the device is simple and quick. It only needs to fix the turbine guide blade to be inspected on the turbine clamping disk. Through a series of mechanical transmissions, the blade can be moved, scanned, and inspected. At the same time, the design of the expansion and contraction rods in the device allows the spacing of the laser beam head to be flexibly adjusted according to the width of the blade and also allows for reciprocating scanning of the turbine guide blade from the inside out, further improving the flexibility and accuracy of detection. In addition, the transmission action of the transmission disk, crawler belt, and second transmission disk enables stable reciprocating movement of the turbine fixing mechanism during the detection process, ensuring that the laser beam head can fully scan the blade surface, avoiding detection blind spots, and improving the accuracy and efficiency of crack detection.

[0021] 2. The present invention effectively improves the efficiency and accuracy of crack detection by providing a turbine fixing mechanism. By implementing multi-angle and all-round blade scanning, the comprehensiveness of detection is ensured, the hidden dangers caused by blind spots in detection are eliminated, and the motor speed and direction are precisely adjusted so that the device can adapt to the detection of blades of various specifications and shapes, further enhancing its adaptability and practical value. The application of automated control significantly reduces the difficulty and errors of manual operation, ensuring the reliability and stability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the main body three-dimensional separation structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the base of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the turbine fixing mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the three-dimensional separation structure of the turbine fixing mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional separation structure of the mobile component of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the connection assembly of the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the flip control assembly of the present invention;

[0030] Figure 9 It is a schematic diagram of the three-dimensional structure of the detection mechanism and the control mechanism of the present invention;

[0031] Figure 10 It is a schematic diagram of the three-dimensional separation structure of the detection mechanism of the present invention;

[0032] Figure 11 It is a schematic diagram of a three-dimensional cross-sectional structure of the control mechanism of the present invention;

[0033] Figure 12 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0034] In the figure: 1. Base; 11. Bottom plate; 12. L-shaped connecting plate; 13. Guide rail; 14. L-shaped guide side plate; 15. Rack; 2. Turbine fixing mechanism; 21. Moving assembly; 211. External connecting plate; 212. Splicing groove; 213. L-shaped connecting rod; 214. Horizontal connecting plate; 215. Gear connecting frame; 216. Vertical plate; 217. Gear extension groove; 218. Hydraulic push rod connecting block; 219. Hydraulic push rod; 2110, push plate; 2111, gear motor; 2112, gear; 2113, limit slot; 22, connection assembly; 221, flip control assembly; 2211, control assembly base; 2212, motor connection plate; 2213, motor; 2214, U-shaped connection plate; 2215, adapter block; 2216, rotating rod; 2217, columnar rotating block; 2218, sector tooth rotating rod; 2219, slide rod; 221 10. Sector-shaped tooth connecting ring; 22111. Sector-shaped tooth; 22112. Second adapter block; 22113. Columnar rotating rod; 22114. Second gear; 222. Turbine clamping plate; 3. Detection mechanism; 31. Inverted L-shaped support plate; 32. Side plate; 33. Rotating roller rotating rod; 34. Rotating roller; 35. Inclined slide; 36. Columnar guide connecting rod; 37. Columnar guide rod; 38. Retracting and expanding rod block; 39. Retracting Expansion rod; 310, laser beam head; 311, second motor connecting seat; 312, second motor; 313, transmission plate; 4, control mechanism; 41, L-shaped base plate; 42, turntable rod connecting block; 43, turntable rod; 44, second transmission plate; 45, crawler track; 46, turntable; 47, turntable stop block; 48, elliptical push-pull frame; 49, L-shaped slide rod; 410, Z-shaped push-pull rod; 411, limit block; 412, spring. DETAILED DESCRIPTION

[0035] 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.

[0036] like Figure 1-2 As shown, the present invention provides an engine turbine guide blade crack detection device, including a base 1, a turbine fixing mechanism 2 is movably connected to the top of the base 1, a detection mechanism 3 is fixed to the middle of the top of the base 1, and a control mechanism 4 is fixedly connected to the rear side of the detection mechanism 3. The turbine fixing mechanism 2 firmly clamps the blade and flips it to ensure stability and comprehensiveness during the detection process. The detection mechanism 3 detects the surface of the turbine guide blade, and the control mechanism 4 reciprocates the turbine fixing mechanism 2 as a whole during the detection process.

[0037] like Figure 3-8 As shown, the base 1 includes a bottom plate 11, and the left and right sides of the top of the bottom plate 11 are respectively fixedly connected with L-shaped connecting plates 12, the tops of the two L-shaped connecting plates 12 are fixedly connected with guide rail rods 13, the outer tops of the two guide rail rods 13 are fixedly connected with L-shaped guide side plates 14, and the left side of the left L-shaped guide side plate 14 is fixedly connected with a rack 15. The arrangement of the rack 15 facilitates cooperation with the moving component 21 in the turbine fixing mechanism 2, so as to realize stable movement of the turbine fixing mechanism 2 during the detection process.

[0038] like Figure 3-8 As shown, the turbine fixing mechanism 2 includes a moving component 21, and the inner wall of the moving component 21 is movably connected to the connecting component 22; the moving component 21 includes an external plate 211, and the left and right sides of the external plate 211 are respectively fixedly connected to the horizontal connecting plates 214, and the front and rear sides of the two horizontal connecting plates 214 are fixedly connected to the L-shaped connecting rods 213, and the bottom middle parts of the two L-shaped connecting rods 213 are respectively slidably connected to the tops of the two guide rail rods 13, and the left and right sides of the rear side of the external plate 211 are respectively provided with splicing grooves 212, and the left and right sides of the inner walls of the two splicing grooves 212 are provided with limiting grooves 2113.

[0039] like Figure 3-8 As shown, the left sides of the two L-shaped connecting rods 213 on the left are fixedly connected to a gear connecting frame 215, a gear extension slot 217 is provided at the bottom of the moving component 21, and the front and rear sides of the top of the gear connecting frame 215 are respectively fixedly connected to vertical plates 216, and the tops of the two vertical plates 216 are fixedly connected to hydraulic push rod connecting blocks 218, and the inner wall of the hydraulic push rod connecting block 218 is fixedly connected to a hydraulic push rod 219, and the bottom end of the hydraulic push rod 219 is fixedly connected to a push plate 2110, and the outer wall of the push plate 2110 is slidably connected to the inner side of the two vertical plates 216, and the bottom of the push plate 2110 is fixedly connected to the gear motor 21 11. The output end of the gear motor 2111 extends to the bottom of the gear connecting frame 215 through the gear extension groove 217 and is fixedly connected to the gear 2112. The outer wall of the gear 2112 is engaged with the outer wall of the rack 15. The engagement design of the gear 2112 and the rack 15 enables the moving component 21 to move horizontally stably along the guide rod 13. The setting of the hydraulic push rod 219 further enhances the flexibility and adaptability of the turbine fixing mechanism 2. By adjusting the telescopic length of the hydraulic push rod 219, the overall position of the push plate 2110 and the gear motor 2111 and gear 2112 connected to the bottom thereof can be changed.

[0040] like Figure 3-8As shown, the connecting component 22 includes a flip control component 221, and the front side of the flip control component 221 is fixedly connected to the turbine clamping disk 222, and the rear side of the outer wall of the turbine clamping disk 222 is rotatably connected to the rear side of the inner wall of the external plate 211. The flip control component 221 can drive the turbine clamping disk 222 to flip in the external plate 211, thereby realizing detection of different angles of the turbine blades, which is convenient for subsequent crack detection operations.

[0041] like Figure 3-8 As shown, the flip control component 221 includes a control component base plate 2211, the top rear side of the control component base plate 2211 is fixedly connected to the bottom front side of the external plate 211, the rear side of the control component base plate 2211 is fixedly connected to the motor connecting plate 2212, the top of the motor connecting plate 2212 is fixedly connected to the motor 2213, the middle part of the top front side of the control component base plate 2211 is fixedly connected to the U-shaped connecting plate 2214, the top of the U-shaped connecting plate 2214 is fixedly connected to the adapter block 2215, the middle part of the top front side of the control component base plate 2211 is fixedly connected to the second adapter block 22112, the output end of the motor 2213 extends to the rear side of the U-shaped connecting plate 2214 and is fixedly connected to the rotating rod 2216, the rear bottom of the rotating rod 2216 is fixedly connected to the columnar rotating block 2217, the inner wall of the adapter block 2215 is rotatably connected to the fan-shaped gear rotating rod 2218, the fan-shaped gear rotating rod 2219 The rear side of the outer wall of 218 is fixedly connected with a fan-shaped tooth connecting ring 22110, and the outer wall bottom of the fan-shaped tooth connecting ring 22110 is fixedly connected with a fan-shaped tooth 22111. The bottom middle part of the outer wall of the fan-shaped tooth rotating rod 2218 is fixedly connected with a sliding groove rod 2219. The inner wall of the sliding groove rod 2219 is rotatably connected to the outer wall of the column rotating block 2217. Driven by the motor 2213, the rotating rod 2216 drives the column rotating block 2217 to rotate, and then the sliding groove rod 2219 is connected to the outer wall of the column rotating block 2217 through the rotation connection of the sliding groove rod 2219, so that the fan-shaped tooth rotating rod 2218 rotates on the inner wall of the adapter block 2215. At the same time, the fan-shaped tooth connecting ring 22110 rotates with the fan-shaped tooth rotating rod 2218, and the fan-shaped teeth 22111 at its bottom engage with other transmission components to realize the functions of power transmission and flip control, which can effectively control the flipping of the blade and provide necessary operational convenience for crack detection.

[0042] like Figure 3-8As shown, the inner wall of the second adapter block 22112 is rotatably connected to a cylindrical rotating rod 22113, and the front end of the cylindrical rotating rod 22113 is fixedly connected to a second gear 22114. The outer wall of the second gear 22114 is meshed with the bottom of the sector tooth 22111. The rear end of the cylindrical rotating rod 22113 extends to the inner wall of the external plate 211 and is fixedly connected to the front side of the outer wall of the turbine clamping disk 222. Through the meshing action of the sector tooth 22111 and the second gear 22114, when the sector tooth 22111 rotates, it drives the second gear The wheel 22114 and the cylindrical rotating rod 22113 connected thereto rotate, and the rear end of the cylindrical rotating rod 22113 is fixedly connected to the turbine clamping disk 222. Therefore, the turbine clamping disk 222 will rotate with the rotation of the cylindrical rotating rod 22113, thereby realizing the flipping action of the blade, ensuring that the blade can be smoothly and accurately flipped to the required position during the crack detection process, thereby facilitating the detection work. At the same time, the flip control component has a compact structure and occupies little space, and is suitable for crack detection devices of various engine turbine guide blades.

[0043] like Figure 9-12 As shown, the detection mechanism 3 includes two inverted L-shaped vertical support plates 31, the bottoms of the two inverted L-shaped vertical support plates 31 are respectively fixedly connected to the middle part of the outer side of the two L-shaped connecting plates 12, and the tops of the two inverted L-shaped vertical support plates 31 are fixedly connected to the side plates 32 on the sides close to each other. The inner walls of the two side plates 32 are rotatably connected to the rotating roller rods 33, and the rotating roller rods 33 are fixedly connected to the outer wall of one side of the inner side of the two side plates 32. The front sides of the two inverted L-shaped vertical support plates 31 on the sides close to each other are fixedly connected to the columnar guide connecting rods 36, and the tops and bottoms of the inner sides of the two columnar guide connecting rods 36 are fixedly connected to the columnar guide rods 37. The right side of the inverted L-shaped A second motor connecting seat 311 is fixedly connected to the top right side of the vertical support plate 31, and a second motor 312 is fixedly connected to the top of the second motor connecting seat 311. The output end of the second motor 312 is fixedly connected to the right end of the rotating roller rod 33. The outer wall of the rotating roller rod 33 is fixedly connected to the transmission disk 313 on both sides of the outer side of the two side plates 32. A plurality of inclined grooves 35 are opened on the left and right sides of the outer wall of the rotating roller 34. The inclinations of the left and right groups of inclined grooves 35 are opposite. The rotating roller rod 33 is driven by the second motor 312 to rotate in the two side plates 32. The rotating roller rod 33 drives the rotating roller 34 to rotate synchronously, and the transmission disk 313 plays the role of transmitting power.

[0044] like Figure 9-12As shown, the left and right sides of the outer walls of the two columnar guide rods 37 are slidably connected with the expansion rods 39, the rear sides of the two groups of expansion rods 39 are fixedly connected with the expansion rod blocks 38, the outer walls of the two groups of expansion rod blocks 38 are slidably connected to the inner walls of the inclined slots 35, and the front sides of the two groups of expansion rods 39 are fixedly connected with the laser beam heads 310, which are slidably connected to the expansion rod blocks 38 through the inclined slots 35 opened on the outer wall of the rotating roller 34. When the rotating roller 34 rotates, the inclined design of the inclined slots 35 makes the expansion rod blocks 38 drive the expansion rods 39 on the columnar guide rods 37 The outer wall slides left and right, thereby adjusting the spacing of the laser beam head 310 to achieve accurate detection of cracks in the engine turbine guide blades. When there is a crack in the blade, the laser emitted by the laser beam head 310 will be blocked by the crack, and the integrity of the laser can be detected to determine whether there is a crack in the blade. In addition, the design of the expansion rod 39 allows the spacing of the laser beam head 310 to be flexibly adjusted according to the width of the blade and can also be scanned back and forth from the inside to the outside, further improving the accuracy and efficiency of the detection and improving the applicability and accuracy of the detection device.

[0045] like Figure 9-12As shown, the control mechanism 4 includes two L-shaped bottom plates 41, the front sides of the two L-shaped bottom plates 41 are respectively fixedly connected to the middle part of the rear side of the two inverted L-shaped support plates 31, and the side of the top rear side of the two L-shaped bottom plates 41 close to each other is fixedly connected with a turntable rod connecting block 42, the inner walls of the two turntable rod connecting blocks 42 are rotatably connected to the turntable rod 43, the outer ends of the two turntable rods 43 are fixedly connected to the second transmission disk 44, the outer walls of the two second transmission disks 44 are respectively covered with crawlers 45, the inner sides of the two crawlers 45 away from the second transmission disk 44 are respectively covered with the outer walls of the two transmission disks 313, and the inner ends of the two turntable rods 43 extend to the two rotation disks. The inner side of the disk rod connecting block 42 is fixedly connected to a turntable 46, the inner sides of the two turntables 46 are fixedly connected to a turntable block 47, the outer walls of the two turntable blocks 47 are sleeved with an elliptical push-pull frame 48, the front sides of the two elliptical push-pull frames 48 are fixedly connected to a Z-shaped push-pull rod 410, the front sides of the two turntable rod connecting blocks 42 are fixedly connected to an L-shaped slide rod 49, the outer walls of the two Z-shaped push-pull rods 410 are respectively slidably connected to the inner sides of the two L-shaped slide rods 49, the left and right sides of the front inner walls of the two Z-shaped push-pull rods 410 are slidably connected to the limit blocks 411, and the outer sides of the two sets of limit blocks 411 extend to the Z-shaped push-pull rod 410 The front outer wall of the two sets of limit blocks 411 are all semicircular cross-sections, and the inner sides of the two sets of limit blocks 411 are fixedly connected with springs 412. Through the elastic action of the springs 412, the limit blocks 411 can be tightly engaged with the splicing grooves 212 when spliced. The two second transmission plates 44 are transmission-connected to the outer wall of the transmission plate 313 through the crawler belt 45 on the outer wall. When the second motor 312 is started, it will drive the rotating roller rod 33 to rotate. The rotating roller rod 33 drives the two second transmission plates 44 to rotate synchronously through the transmission action of the transmission plate 313 and the crawler belt 45. The rotation of the second transmission plate 44 further drives the turntable rod 43 and the turntable 46 connected thereto to rotate. During the rotation of the disk 46, the turntable block 47 on its inner side will move back and forth in the elliptical push-pull frame 48. Due to the design of the elliptical push-pull frame 48, the movement of the turntable block 47 will drive the elliptical push-pull frame 48 and the Z-shaped push-pull rod 410 connected to its front side to perform reciprocating push-pull movements. The Z-shaped push-pull rod 410 slides in the L-shaped slide rod 49. At the same time, the limit block 411 on the inner wall of the front side of the Z-shaped push-pull rod 410 is tightly engaged with the splicing groove 212 in the moving component 21 under the elastic action of the spring 412, thereby realizing stable reciprocating movement of the turbine fixing mechanism 2 during the detection process, thereby ensuring the comprehensiveness and accuracy of crack detection.

[0046] Working principle of the present invention: When crack detection of turbine guide blades is required, first fix the turbine guide blades to be detected on the turbine clamping plate 222, then start the gear motor 2111, the output end of the gear motor 2111 drives the gear 2112 to rotate, the meshing action of the gear 2112 and the rack 15 causes the moving assembly 21 and the connected turbine clamping plate 222 and the turbine guide blades to be detected to move linearly along the guide rail rod 13 until the turbine guide blades are moved to the bottom of the detection mechanism 3, and when the external plate 211 moves to the rear side, the two splicing grooves 212 opened on the rear side and the two Z-shaped push-pull rods 410 are connected. The limit block 411 on the front side is tightly engaged. At this time, the hydraulic push rod 219 is started, and the hydraulic push rod 219 starts to pull the push plate 2110 and the gear motor 2111 and gear 2112 at its bottom to move upward, so that the gear 2112 is separated from the outer wall of the rack 15. Then the second motor 312 is started, and the second motor 312 starts the transmission rotating roller rod 33 to rotate. The rotation of the rotating roller rod 33 drives the rotating roller 34 and the inclined slide 35 on its outer wall to rotate synchronously. The rotation of the inclined slide 35 drives the expansion rod block 38 and the expansion rod 39 connected to it to slide back and forth along the columnar guide rod 37. Since the inclinations of the two groups of inclined slides 35 are opposite, the two groups of expansion rods are The rod 39 will move toward or away from each other with the rotating roller 34 as the center, thereby adjusting the spacing of the laser beam head 310, and reciprocatingly scanning the turbine guide blades from the inside to the outside, further improving the accuracy and efficiency of the detection, and improving the applicability and accuracy of the detection device. When there is a crack in the blade, the laser emitted by the laser beam head 310 will be blocked by the crack, and the integrity of the laser can be used to determine whether the blade has a crack. In addition, the design of the expansion rod 39 allows the spacing of the laser beam head 310 to be flexibly adjusted according to the width of the blade. At the same time, the rotation of the rotating roller rod 33 also drives the two first The two transmission disks 44 rotate synchronously, and the rotation of the second transmission disk 44 further drives the turntable rod 43 and the turntable 46 and turntable stop block 47 connected to its inner side to rotate. The turntable stop block 47 reciprocates in the elliptical push-pull frame 48, thereby driving the elliptical push-pull frame 48 and the Z-shaped push-pull rod 410 connected to its front side to slide back and forth in the L-shaped slide rod 49. The sliding of the Z-shaped push-pull rod 410 is tightly engaged with the splicing groove 212 in the moving component 21 through the limit block 411, thereby realizing stable reciprocating movement of the turbine fixing mechanism 2 during the detection process, ensuring that the laser ray head 310 can fully scan the blade surface, and improving the accuracy and efficiency of crack detection;

[0047] In addition, while the turbine blades are being inspected and scanned, the motor 2213 is started, and the output end of the motor 2213 drives the rotating rod 2216 to rotate. The rotation of the rotating rod 2216 further drives the cylindrical rotating block 2217 to rotate synchronously. The rotation of the cylindrical rotating block 2217 drives the sector-toothed rotating rod 2218 and the sector-toothed connecting ring 22110 and the sector-toothed 22111 on its outer wall to rotate back and forth through the connection between the slide rod 2219 and the sector-toothed rotating rod 2218. The rotation of the sector-toothed 22111 engages with the outer wall of the second gear 22114 for transmission, thereby driving the cylindrical rotating rod 22113 and the turbine connected to its front end. The clamping disc 222 rotates, and the rotation of the turbine clamping disc 222 can drive the turbine guide blades fixed on its surface to adjust their angles, so that the laser beam head 310 can fully scan the blades at different angles, further improving the comprehensiveness and accuracy of crack detection. During the detection process, by controlling the speed and direction of the motor 2213, the rotation speed and angle of the turbine clamping disc 222 and the turbine guide blades thereon can be precisely controlled to meet the detection requirements of blades of different specifications and shapes. At the same time, since the entire detection process is automated, the detection efficiency and accuracy are greatly improved, and the difficulty and error of manual operation are reduced.

[0048] After the inspection is completed, it is only necessary to restart the hydraulic push rod 219. The hydraulic push rod 219 pushes the push plate 2110 and the gear motor 2111 and gear 2112 at the bottom thereof to move downward, so that the gear 2112 is re-engaged with the rack 15. Then the gear motor 2111 is started to reverse, and the output end of the gear motor 2111 drives the gear 2112 to rotate. The meshing action of the gear 2112 and the rack 15 causes the moving assembly 21 and its connected turbine clamping plate 222 and the inspected turbine guide blade to move in a straight line in the opposite direction along the guide rail rod 13. During the inspection process, the two splicing grooves 212 opened by the external plate 211 are disengaged from the limit blocks 411 on the front sides of the two Z-shaped push-pull rods 410 due to the pulling force of the movement. At this time, the second motor 312 stops working and the laser beam head 310 stops emitting laser, completing the entire inspection process and placing the next turbine guide blade to be inspected. This cycle is repeated to realize the automated process of turbine guide blade crack detection, which not only improves the detection efficiency, but also ensures the accuracy and stability of the detection, and meets the high requirements for turbine guide blade crack detection in industrial production.

[0049] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine turbine guide vane crack detection device, characterized in that: It comprises a base (1), the top of the base (1) is movably connected to a turbine fixing mechanism (2), a detection mechanism (3) is fixed to the middle of the top of the base (1), and a control mechanism (4) is fixedly connected to the rear side of the detection mechanism (3); The base (1) comprises a bottom plate (11), the left and right sides of the top of the bottom plate (11) are respectively fixedly connected with L-shaped connecting plates (12), the tops of the two L-shaped connecting plates (12) are fixedly connected with guide rails (13), the outer tops of the two guide rails (13) are fixedly connected with L-shaped guide side plates (14), and the left side of the left L-shaped guide side plate (14) is fixedly connected with a rack (15). The turbine fixing mechanism (2) comprises a moving component (21), and the inner wall of the moving component (21) is movably connected to a connecting component (22); The moving assembly (21) comprises an external connecting plate (211), the left and right sides of the external connecting plate (211) are respectively fixedly connected with a transverse connecting plate (214), the front and rear sides of the two transverse connecting plates (214) are both fixedly connected with an L-shaped connecting rod (213), the bottom middle parts of the two L-shaped connecting rods (213) are respectively slidably connected to the tops of the two guide rail rods (13), the left and right sides of the rear side of the external connecting plate (211) are respectively provided with a splicing groove (212), and the left and right sides of the inner walls of the two splicing grooves (212) are both provided with a limiting groove (2113); The connecting assembly (22) includes a flip control assembly (221), the front side of the flip control assembly (221) is fixedly connected to a turbine clamping disk (222), and the rear side of the outer wall of the turbine clamping disk (222) is rotatably connected to the rear side of the inner wall of the external plate (211); The flip control component (221) comprises a control component base plate (2211), the top rear side of the control component base plate (2211) is fixedly connected to the bottom front side of the external plate (211), the rear side of the control component base plate (2211) is fixedly connected to a motor connecting plate (2212), the top of the motor connecting plate (2212) is fixedly connected to a motor (2213), the middle of the top front side of the control component base plate (2211) is fixedly connected to a U-shaped connecting plate (2214), the top of the U-shaped connecting plate (2214) is fixedly connected to a transfer block (2215), the middle of the top front side of the control component base plate (2211) is fixedly connected to a second transfer block (22112), the motor (22 The output end of 13) extends to the rear side of the U-shaped connecting plate (2214) and is fixedly connected to a rotating rod (2216), the rear bottom of the rotating rod (2216) is fixedly connected to a columnar rotating block (2217), the inner wall of the switching block (2215) is rotatably connected to a fan-shaped tooth rotating rod (2218), the rear side of the outer wall of the fan-shaped tooth rotating rod (2218) is fixedly connected to a fan-shaped tooth connecting collar (22110), the outer wall bottom of the fan-shaped tooth connecting collar (22110) is fixedly connected to a fan-shaped tooth (22111), the middle bottom of the outer wall of the fan-shaped tooth rotating rod (2218) is fixedly connected to a sliding groove rod (2219), and the inner wall of the sliding groove rod (2219) is rotatably connected to the outer wall of the columnar rotating block (2217); The detection mechanism (3) comprises two inverted L-shaped support plates (31), the bottoms of the two inverted L-shaped support plates (31) are respectively fixedly connected to the middle parts of the outer sides of the two L-shaped connecting plates (12), the tops of the two inverted L-shaped support plates (31) are fixedly connected to the sides close to each other with side plates (32), the inner walls of the two side plates (32) are rotatably connected to rotating roller rods (33), and the rotating roller rods (33) are fixedly connected to rotating rollers (34) on the outer walls of one side of the inner sides of the two side plates (32); The front sides of the two inverted L-shaped vertical support plates (31) that are close to each other are fixedly connected with a columnar guide connecting rod (36), and the top and bottom of the inner sides of the two columnar guide connecting rods (36) are fixedly connected with a columnar guide rod (37). The right side of the top of the right inverted L-shaped vertical support plate (31) is fixedly connected with a second motor connecting seat (311), and the top of the second motor connecting seat (311) is fixedly connected with a second motor (312). The output end of the second motor (312) is fixedly connected to the right end of the rotating roller rotating rod (33). The outer wall of the rotating roller rotating rod (33) is fixedly connected with a transmission disk (313) on both sides of the outer side of the two side plates (32). A plurality of inclined slots (35) are provided on the left and right sides of the outer wall of the rotating roller (34), and the inclinations of the two groups of inclined slots (35) on the left and right are opposite. The control mechanism (4) comprises two L-shaped bottom plates (41), the front sides of the two L-shaped bottom plates (41) are respectively fixedly connected to the middle of the rear sides of the two inverted L-shaped vertical support plates (31), the top rear sides of the two L-shaped bottom plates (41) are fixedly connected to the sides close to each other, and the inner walls of the two turntable rod connecting blocks (42) are rotatably connected to the turntable rods (43).

2. The engine turbine guide vane crack detection device according to claim 1, characterized in that: The left sides of the two L-shaped connecting rods (213) on the left are fixedly connected to a gear connecting frame (215), the bottom of the moving assembly (21) is provided with a gear extension groove (217), the front and rear sides of the top of the gear connecting frame (215) are respectively fixedly connected to vertical plates (216), the tops of the two vertical plates (216) are fixedly connected to hydraulic push rod connecting blocks (218), the inner wall of the hydraulic push rod connecting block (218) is fixedly connected to a hydraulic push rod (219), the hydraulic push rod The bottom end of (219) is fixedly connected to a push plate (2110), the outer wall of which is slidably connected to the inner side of the two vertical plates (216), the bottom of which is fixedly connected to a gear motor (2111), the output end of which extends to the bottom of the gear connecting frame (215) through a gear extension slot (217) and is fixedly connected to a gear (2112), the outer wall of which is meshed with the outer wall of the rack (15).

3. The crack detection device for an engine turbine guide vane according to claim 2, characterized in that: The inner wall of the second adapter block (22112) is rotatably connected to a cylindrical rotating rod (22113), the front end of the cylindrical rotating rod (22113) is fixedly connected to a second gear (22114), the outer wall of the second gear (22114) is engaged with the bottom of the fan-shaped tooth (22111), and the rear end of the cylindrical rotating rod (22113) extends to the inner wall of the external plate (211) and is fixedly connected to the front side of the outer wall of the turbine clamping disk (222).

4. The crack detection device for an engine turbine guide vane according to claim 1, characterized in that: The left and right sides of the outer walls of the two columnar guide rods (37) are slidably connected to the expansion rods (39), the rear sides of the two groups of the expansion rods (39) are fixedly connected to the expansion rod abutments (38), the outer walls of the two groups of the expansion rod abutments (38) are slidably connected to the inner walls of the inclined slide groove (35), and the front sides of the two groups of the expansion rods (39) are fixedly connected to the laser beam heads (310).

5. The crack detection device for an engine turbine guide vane according to claim 1, characterized in that: The outer ends of the two turntable rods (43) are fixedly connected to the second transmission disc (44), the outer walls of the two second transmission discs (44) are covered with tracks (45), the inner sides of the two tracks (45) away from the second transmission disc (44) are respectively covered with the outer walls of the two transmission discs (313), the inner ends of the two turntable rods (43) extend to the inner sides of the two turntable rod connecting blocks (42) and are fixedly connected to the turntable (46), the inner sides of the two turntables (46) are fixedly connected to the turntable blocks (47), the outer walls of the two turntable blocks (47) are covered with elliptical push-pull frames (48), and the two elliptical The front sides of the push-pull frame (48) are fixedly connected with a Z-shaped push-pull rod (410), the front sides of the two turntable rod connecting blocks (42) are fixedly connected with an L-shaped sliding groove rod (49), the outer walls of the two Z-shaped push-pull rods (410) are respectively slidably connected to the inner sides of the two L-shaped sliding groove rods (49), the left and right sides of the front inner walls of the two Z-shaped push-pull rods (410) are slidably connected with limiting blocks (411), the outer sides of the two groups of limiting blocks (411) extend to the front outer walls of the Z-shaped push-pull rod (410) and are both semicircular cross-sections, and the inner sides of the two groups of limiting blocks (411) are fixedly connected with springs (412).

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