Engine blade testing device

Abstract

The invention discloses an engine blade testing device, which comprises a box body, at least one group of stationary blades and one group of moving blades are arranged in the box body, and the stationary blades are fixedly arranged in the box body; the at least one borescope channel is arranged on the front face of the box body, each set of static blades corresponds to one borescope channel, and the borescope channels communicate with the interior of the box body; the arc-shaped moving block is arranged in the box body in a sliding mode along an arc-shaped track, the moving blade is installed on the arc-shaped moving block, the arc-shaped moving block and the moving blade are controlled to slide along the arc-shaped track in a manual or automatic mode, and the real motion path of the moving blade is simulated. The process that an operator stretches into the detection rod from the borescope channel for simulation detection is more real.

Description

Technical Field

[0001] This invention relates to the field of non-destructive testing technology, and in particular to an engine blade testing device. Background Technology

[0002] After a period of use, aircraft engines are subjected to shear and torsional stresses caused by the high temperature and high fluidity of the gas in the air duct. This can cause microcracks to appear on the edges of the turbine blades. Furthermore, turbine blades installed in the air duct require in-situ inspection. If an aircraft engine turbine blade is not assessed for damage using relevant non-destructive testing methods before it is put into flight, it will make the aircraft extremely unsafe. Therefore, the detection and assessment of microcracks on the edges of aircraft engine blades is of utmost importance.

[0003] Due to the complexity of aircraft engine blades, in-situ testing requires trained technicians to diagnose damage skillfully and accurately. Therefore, an engine blade testing device is needed to simulate real engine blade operating conditions, providing a testing and training tool for technicians and making the simulation testing process more realistic. Summary of the Invention

[0004] The purpose of this invention is to provide an engine blade testing device to address the shortcomings and unmet technical requirements of existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An engine blade testing device, comprising The housing has at least one set of stationary blades and one set of moving blades inside, with the stationary blades fixedly installed inside the housing. At least one borehole channel is provided. The borehole channel is located on the front of the housing, and each set of stationary blades corresponds to one borehole channel. The borehole channel is connected to the inside of the housing. An arc-shaped moving block is slidably disposed within the housing along an arc-shaped trajectory. The moving blade is mounted on the arc-shaped moving block. The arc-shaped moving block and the moving blade are controlled manually or automatically to slide along the arc-shaped trajectory, simulating the actual movement path of the moving blade.

[0006] Preferably, the box body is a fan-shaped box body, with a first connecting plate and a second connecting plate respectively provided at the front and rear ends of the fan-shaped box body. The hole probe channel is set on the first connecting plate, and the arc-shaped moving block is slidably set on the second connecting plate along the arc trajectory. The second connecting plate is set inside the fan-shaped box body, or the second connecting plate serves as the rear sealing plate of the fan-shaped box body.

[0007] Preferably, the second connecting plate is provided with an installation port, and an arc-shaped mounting seat is installed at the installation port. The arc-shaped mounting seat is provided with an arc-shaped sliding groove, and the cross-section of the arc-shaped sliding groove is T-shaped. The arc-shaped moving block is slidably disposed in the arc-shaped sliding groove.

[0008] Preferably, the device also includes a lever, the arc-shaped mounting base having a first drive groove communicating with the arc-shaped sliding groove, one end of the lever being fixedly connected to the arc-shaped moving block, the other end of the lever extending outward through the first drive groove, and the arc-shaped mounting base having a locking structure for locking the arc-shaped moving block.

[0009] Preferably, the locking structure includes a screw and a handle. The outer side of the arc-shaped mounting base extends outward with a boss. The screw passes through the boss and is threadedly connected to the boss. One end of the screw abuts against the rear end face of the arc-shaped moving block for locking. The other end of the screw is fixedly connected to the handle.

[0010] Preferably, there are two sets of stationary blades and two borehole channels. The axis of each borehole channel points to a corresponding set of stationary blades. The moving blade is disposed between the two sets of stationary blades. The blade surface tilt angle of the stationary blade is opposite to that of the moving blade. The borehole channels are disposed on a guide tube with a length exceeding 100 mm. The guide tube is detachably mounted on the first connecting plate.

[0011] Preferably, the device also includes a gear and an arc-shaped rack. The arc-shaped mounting base is provided with a second drive groove that communicates with the arc-shaped slide groove. The arc-shaped rack is arranged along an arc-shaped trajectory. The arc-shaped rack passes through the second drive groove and is fixedly mounted on the arc-shaped moving block. The gear is connected to the arc-shaped rack in a transmission connection. A mounting plate is fixedly connected to the outer side of the arc-shaped mounting base. The mounting plate is fixedly mounted with a motor. The output shaft of the motor passes through the mounting plate and is fixedly connected to a gear. The output shaft of the motor drives the gear to rotate. The gear drives the arc-shaped moving block and the moving blade to slide along the arc trajectory through the arc rack. Alternatively, a rotary brake is fixedly mounted on the mounting plate. The output shaft of the rotary brake passes through the mounting plate and is fixedly connected to a gear. When the rotary brake is powered on, the moving blades and the arc-shaped moving block are manually driven to slide along an arc-shaped trajectory. The arc-shaped rack drives the output shaft of the rotary brake to rotate through the gear. When the rotary brake is powered off, the output shaft of the rotary brake can be locked to achieve the positioning of the moving blades and the arc-shaped moving block.

[0012] Preferably, the first connecting plate is provided with waist holes on both sides. Bolts are used to fix the first connecting plate to the side plate of the box through the waist holes. By adjusting the position of the bolts in the waist holes, the installation position of the first connecting plate is controlled, thereby adjusting the corresponding position of the borehole channel. The length of the waist holes exceeds 50mm.

[0013] Preferably, the first connecting plate is provided with an observation window for easy observation of the interior of the box by the operator. The observation window is provided with a hatch, which can close the observation window to make the box form a closed structure, thereby blocking the external ambient light and avoiding ambient light interference. At least one edge of the observation window is less than 50mm away from the borehole channel to facilitate better observation of the working status of the tool inserted through the borehole channel inside the box.

[0014] Preferably, the moving blade and the arc-shaped moving block are installed using a tenon joint structure, which allows for the rapid replacement of different moving blades.

[0015] The beneficial effects of this invention are as follows: 1. By manually or automatically controlling the arc-shaped moving block and the moving blade to slide along the arc-shaped trajectory, the actual movement path of the moving blade is simulated, making the process of the operator extending the probe rod into the borehole channel to simulate detection more realistic; 2. The motor can control the rotation of the gear, which drives the arc-shaped rack to move, thereby controlling the arc-shaped moving block and the moving blade to slide along the arc-shaped trajectory, thus simulating automated detection; or the operator can manually operate the arc-shaped moving block and the moving blade to slide along the arc-shaped trajectory through the observation window. After moving to the designated position, the locking is achieved by rotating the brake. The locking action is simple and reliable, thus simulating semi-automated detection. 3. By controlling the installation position of the first connecting plate, the corresponding position of the borehole channel can be adjusted to meet the needs of different detection positions. The moving blade and the arc-shaped moving block are installed with a tenon joint structure, which can realize the quick replacement of different moving blades. The guide tube can also be replaced with different lengths to simulate the distance from the outer surface of the casing to the inner cavity of the engine of different engines. These quick-change structures can better simulate different models of engines. 4. The first connecting plate is provided with an observation window, and the minimum distance between at least one edge of the observation window and the borehole channel is less than 50mm, so as to better observe the working status of the tool inserted through the borehole channel inside the box. The observation window has a hatch, and when the hatch is closed, the box forms a closed structure, which can block the external ambient light and simulate the dark situation of a real engine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a side sectional view of Example 1; Figure 3 This is a schematic diagram of the internal structure of Example 1; Figure 4 This is a rear view of Example 1; Figure 5 This is a schematic diagram of the structure of Example 2; Figure 6 This is a schematic diagram of the internal structure of Example 2; Figure 7 A structural diagram showing a hatch with an observation window; Figure 8 This is an exploded view of the hatch. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0018] like Figures 1 to 4 An engine blade testing device includes a housing 1, a borehole channel 1031, and an arc-shaped moving block 4. The housing 1 is a sector-shaped housing, with a first connecting plate 101 and a second connecting plate 102 at its front and rear ends, respectively. The borehole channel 1031 is located on the first connecting plate 101, and the second connecting plate 102 serves as the rear sealing plate of the sector-shaped housing. Alternatively, the second connecting plate 102 can be located inside the sector-shaped housing, with a rear sealing plate at the rear end of the housing.

[0019] The housing 1 includes two sets of stationary blades 2 and one set of moving blades 3. The stationary blades 2 are fixedly installed inside the housing 1. There are two borehole channels 1031, with the axis of each borehole channel 1031 pointing to a corresponding set of stationary blades 2. The borehole channel 1031 is connected to the interior of the housing 1. The moving blades 3 are arranged between the two sets of stationary blades 2, and the blade inclination angle of the stationary blades 2 is opposite to that of the moving blades 3. The number of sets of stationary blades 2 and moving blades 3 can be adjusted according to actual needs.

[0020] A guide tube 103 extends outward from the outer side of the first connecting plate 101. A borehole channel 1031 is disposed through the guide tube 103. The guide tube 103 is longer than 100mm. The guide tube 103 is detachably mounted on the first connecting plate 101 by means of insertion, snap-fit, or threaded connection. In this embodiment, the guide tube 103 is mounted on the first connecting plate 101 by insertion.

[0021] The first connecting plate 101 has waist holes 1011 on both sides. Bolts are used to fix the first connecting plate 101 to the side plate of the box 1 through the waist holes 1011. By adjusting the position of the bolts in the waist holes 1011, the installation position of the first connecting plate 101 is controlled, thereby adjusting the corresponding position of the borehole channel 1031. The length of the waist hole 1011 exceeds 50mm.

[0022] The arc-shaped moving block 4 slides along an arc-shaped trajectory on the second connecting plate 102. The moving blade 3 is mounted on the arc-shaped moving block 4. The moving blade 3 and the arc-shaped moving block 4 are installed using a tenon joint structure, which allows for quick replacement of different moving blades 3. Of course, the tenon joint structure can also be replaced by a snap-fit ​​structure, a locking structure, or a threaded structure.

[0023] The second connecting plate 102 has an installation port, at which an arc-shaped mounting base 5 is installed. The arc-shaped mounting base 5 has an arc-shaped sliding groove 502 with a T-shaped cross-section. The arc-shaped moving block 4 is slidably disposed within the arc-shaped sliding groove 502. The end of the arc-shaped sliding groove 502 is open, facilitating the insertion of the arc-shaped moving block 4 into the arc-shaped sliding groove 502 from the end. The side plate of the housing 1 can cover the opening of the arc-shaped sliding groove 502.

[0024] like Figure 7 and Figure 8 The first connecting plate 101 is provided with an observation window 104 for easy observation of the inside of the box by the operator. The observation window 104 is provided with a door 105. The door 105 can close the observation window 104, so that the box forms a closed structure, thereby blocking the external ambient light and avoiding ambient light interference.

[0025] The minimum distance between at least one edge of the observation window 104 and the borehole channel 1031 is less than 50 mm, so as to better observe the working status of the tool inserted through the borehole channel 1031 inside the housing 1.

[0026] This embodiment uses manual control to move the arc-shaped moving block 4 and the moving blade 3 along an arc-shaped trajectory, simulating the actual movement path of the moving blade 3. It also includes a lever 6. The arc-shaped mounting base 5 has a first drive groove 501 communicating with the arc-shaped sliding groove 502. One end of the lever 6 is fixedly connected to the arc-shaped moving block 4, and the other end extends outward through the first drive groove 501. The arc-shaped mounting base 5 has a locking structure to lock the arc-shaped moving block 4 in place. This allows the operator to hold the lever 6 and push the arc-shaped moving block 4 along the arc-shaped trajectory.

[0027] The locking structure includes a screw 8 and a handle 7. A boss 9 extends outward from the outer side of the arc-shaped mounting base 5. A threaded hole is provided at the center of the boss 9. The screw 8 passes through the threaded hole of the boss 9 and is threadedly connected to the boss 9. One end of the screw 8 abuts against the rear end face of the arc-shaped moving block 4 for locking. The other end of the screw 8 is fixedly connected to the handle 7. The operator holds the handle 7 and rotates the screw 8, thereby achieving the tightening or loosening of the screw 8 against the rear end face of the arc-shaped moving block 4. Example 2

[0028] This embodiment refers to the working principle of embodiment 1, with the difference being: like Figure 5 and Figure 6In this embodiment, the arc-shaped moving block 4 and the moving blade 3 are controlled automatically to slide along the arc-shaped trajectory on the arc-shaped mounting base 5.

[0029] The system includes a motor 10, a gear 11, and an arc-shaped rack 12. The arc-shaped mounting base 5 has a second drive groove 503 that communicates with the arc-shaped slide groove 502. The arc-shaped rack 12 is set along an arc-shaped trajectory, passes through the second drive groove 503, and is fixedly mounted on the arc-shaped moving block 4. A mounting plate 13 is fixedly connected to the outer side of the arc-shaped mounting base 5. The motor 10 is fixedly mounted on the mounting plate 13. The output shaft of the motor 10 passes through the mounting plate 13 and is fixedly connected to the gear 11. The gear 11 is driven by the arc-shaped rack 12. This drive connection is a direct meshing connection. Alternatively, the gear 11 can be connected to the arc-shaped rack 12 through a transmission gear. The output shaft of the motor 10 drives the gear 11 to rotate. The gear 11 drives the arc-shaped moving block 4 and the moving blade 3 to slide along the arc-shaped trajectory through the arc-shaped rack 12, thereby simulating automated detection.

[0030] Alternatively, a second option is to replace motor 10 with a rotary brake. The rotary brake is fixedly mounted on mounting plate 13, and its output shaft passes through mounting plate 13 and is fixedly connected to gear 11. After the rotary brake is powered on, the operator can manually drive the moving blade 3 and the arc-shaped moving block 4 to slide along the arc-shaped trajectory through the observation window. The arc-shaped rack drives the output shaft of the rotary brake to rotate through the gear. After the moving blade 3 and the arc-shaped moving block 4 move to the designated position, the rotary brake is powered off, which can lock the output shaft of the rotary brake, thereby locking gear 11 and realizing the positioning of moving blade 3 and arc-shaped moving block 4, thus simulating semi-automatic detection.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. 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 can be understood by those skilled in the art.

Claims

1. An engine blade testing device, characterized in that, include The housing has at least one set of stationary blades and one set of moving blades inside, with the stationary blades fixedly installed inside the housing. At least one borehole channel is provided. The borehole channel is located on the front of the housing, and each set of stationary blades corresponds to one borehole channel. The borehole channel is connected to the inside of the housing. An arc-shaped moving block is slidably disposed within the housing along an arc-shaped trajectory. The moving blade is mounted on the arc-shaped moving block. The arc-shaped moving block and the moving blade are controlled manually or automatically to slide along the arc-shaped trajectory, simulating the actual movement path of the moving blade.

2. The engine blade testing device according to claim 1, characterized in that, The box body is a fan-shaped box body. The front and rear ends of the fan-shaped box body are respectively provided with a first connecting plate and a second connecting plate. The hole probe channel is set on the first connecting plate. The arc-shaped moving block is slidably set on the second connecting plate along the arc trajectory. The second connecting plate is set inside the fan-shaped box body, or the second connecting plate is used as the rear sealing plate of the fan-shaped box body.

3. The engine blade testing device according to claim 2, characterized in that, The second connecting plate is provided with an installation port, and an arc-shaped mounting seat is installed at the installation port. The arc-shaped mounting seat is provided with an arc-shaped sliding groove, and the cross-section of the arc-shaped sliding groove is T-shaped. The arc-shaped moving block is slidably disposed in the arc-shaped sliding groove.

4. The engine blade testing device according to claim 3, characterized in that, It also includes a lever, the arc-shaped mounting base is provided with a first drive groove communicating with the arc-shaped sliding groove, one end of the lever is fixedly connected to the arc-shaped moving block, the other end of the lever extends outward through the first drive groove, and the arc-shaped mounting base is provided with a locking structure to lock the arc-shaped moving block.

5. The engine blade testing device according to claim 4, characterized in that, The locking structure includes a screw and a handle. The outer side of the arc-shaped mounting base extends outward with a boss. The screw passes through the boss and is threadedly connected to the boss. One end of the screw abuts against the rear end face of the arc-shaped moving block for locking. The other end of the screw is fixedly connected to the handle.

6. The engine blade testing device according to claim 2, characterized in that, There are two sets of stationary blades and two borehole channels. The axis of each borehole channel points to a corresponding set of stationary blades. The moving blade is located between the two sets of stationary blades. The blade surface tilt angle of the stationary blade is opposite to that of the moving blade. The borehole channel is located on a guide tube with a length of more than 100 mm. The guide tube is detachably mounted on the first connecting plate.

7. The engine blade testing device according to claim 3, characterized in that, It also includes a gear and an arc-shaped rack. The arc-shaped mounting base is provided with a second drive groove that communicates with the arc-shaped slide groove. The arc-shaped rack is set along an arc-shaped trajectory. The arc-shaped rack passes through the second drive groove and is fixedly mounted on the arc-shaped moving block. The gear is connected to the arc-shaped rack in a transmission connection. A mounting plate is fixedly connected to the outer side of the arc-shaped mounting base. The mounting plate is fixedly mounted with a motor. The output shaft of the motor passes through the mounting plate and is fixedly connected to a gear. The output shaft of the motor drives the gear to rotate. The gear drives the arc-shaped moving block and the moving blade to slide along the arc trajectory through the arc rack. Alternatively, a rotary brake is fixedly mounted on the mounting plate. The output shaft of the rotary brake passes through the mounting plate and is fixedly connected to a gear. When the rotary brake is powered on, the moving blades and the arc-shaped moving block are manually driven to slide along an arc-shaped trajectory. The arc-shaped rack drives the output shaft of the rotary brake to rotate through the gear. When the rotary brake is powered off, the output shaft of the rotary brake can be locked to achieve the positioning of the moving blades and the arc-shaped moving block.

8. The engine blade testing device according to claim 2, characterized in that, The first connecting plate has waist holes on both sides. Bolts are used to fix the first connecting plate to the side plate of the box through the waist holes. By adjusting the position of the bolts in the waist holes, the installation position of the first connecting plate is controlled, thereby adjusting the corresponding position of the borehole channel. The length of the waist holes exceeds 50mm.

9. The engine blade testing device according to claim 2, characterized in that, The first connecting plate is provided with an observation window for easy observation of the inside of the box by the operator. The observation window is provided with a hatch, which can close the observation window to make the box form a closed structure, thereby blocking the external ambient light and avoiding ambient light interference. At least one edge of the observation window is less than 50mm away from the borehole channel to facilitate better observation of the working status of the tool inserted through the borehole channel inside the box.

10. The engine blade testing device according to claim 1, characterized in that, The moving blade and the arc-shaped moving block are installed using a tenon joint structure, which allows for the rapid replacement of different moving blades.

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