A poking rod for poking high pressure turbine blades and a method of using the same

Abstract

The application belongs to the technical field of aero-engines, and particularly relates to a poking rod for poking high-pressure turbine blades and a use method thereof, which comprises a sleeve, a straight rod sleeved in the sleeve, a rotating head for poking the high-pressure turbine blades and connected with one end of the straight rod, and a limiting device positioned with an engine hole probe instrument seat; wherein the other end of the straight rod is provided with a handle; when the straight rod drives the rotating head to move axially, the slope surface of the rotating head slides against the sleeve pin, and the flat surface of the rotating head slides against the short wall, so that the rotating head swings around the hinge point of the straight rod; thereby the blades are poked; the application has the advantages of simple structure and convenient operation. The rotation of the rotating head can be indirectly controlled through the sleeve; the limiting pin can realize axial limiting of the poking rod and rotation of the poking rod around itself.

Description

Technical Field

[0001] This application belongs to the field of aero-engine technology, and specifically relates to a lever for moving high-pressure turbine blades and its usage method. Background Technology

[0002] To inspect the dust accumulation on the lower edge of high-pressure turbine blades in aero-engines, it is necessary to observe the tangential movement of each blade in real time under external force using a borescope. If the tangential movement of the blade reaches the required amount, it indicates that the blade is not constrained, and thus the dust accumulation under the edge can be determined. A lever is needed to move the high-pressure turbine blades. Summary of the Invention

[0003] To solve the above problems, a lever for actuating high-pressure turbine blades includes:

[0004] Sleeve, straight rod fitted inside sleeve, rotating head hinged to one end of straight rod for turning high-pressure turbine blades, and limiting device for positioning engine borescope mount;

[0005] The other end of the straight rod has a handle;

[0006] The sleeve has a long wall extending axially from one side of a protruding end face, and a short wall opposite the long wall. A sleeve pin is located on the inner side of the long wall. The rotating head has a slope on the side near the long wall and a smooth, flat surface on the side near the short wall. When the straight rod drives the rotating head to move axially, the slope of the rotating head slides relative to the sleeve pin, and the flat surface of the rotating head slides relative to the short wall, causing the rotating head to swing around the hinge point of the straight rod.

[0007] The limiting device includes an adapter, an outer nut, and a limiting pin; the straight rod has a pin hole for insertion, and the sleeve has an elongated hole for the limiting pin to pass through and move axially a certain distance; the adapter is fitted with a gap on the outside of the sleeve, and the outer nut is fitted with a gap on the outside of the sleeve and threadedly connected to the adapter; the end face of the adapter and the inner end face of the outer nut form an annular cavity, and the limiting pin is rotatably placed in the annular cavity.

[0008] Preferably, the straight rod has two locking pin holes with different axial positions near the handle, and the sleeve has a corresponding through hole at the locking pin hole. The pin is connected to the through hole through the different locking pin holes, so that the straight rod and the sleeve are locked at different axial positions.

[0009] Preferably, the handle is perpendicular to the straight rod.

[0010] Preferably, the end of the adapter near the rotating head has a sleeve that inserts into the engine borescope mount, the sleeve radially limiting the adapter.

[0011] Preferably, when the straight rod extends relative to the sleeve, the angle between the axis of the straight rod and the axis of the rotating head is 45°.

[0012] Preferably, the head of the rotating head has a rubber protective sleeve.

[0013] A method of using a lever for moving high-pressure turbine blades, wherein the lever is used to move high-pressure turbine blades.

[0014] Step S1: Hold the sleeve and pull the straight rod to make the axis of the rotating head collinear with the axis of the straight rod;

[0015] Step S2: Insert the sleeve into the engine borescope mount and limit it axially using the limiting device;

[0016] Step S3: Push the straight rod so that the axis of the rotating head is at a certain angle to the axis of the straight rod and comes into contact with the high-pressure turbine blades;

[0017] Step S4: Rotate the handle to move the high-pressure turbine blades;

[0018] Step S5: After the check, hold the sleeve and pull the straight rod to make the axis of the rotating head collinear with the axis of the straight rod;

[0019] Step S6: Rotate the high-pressure turbine and repeat steps S1-S5.

[0020] Preferably, when there are two initial pin holes and working pin holes with different axial positions at the position of the straight rod near the handle, the sleeve has a corresponding through hole at the locking pin hole; at this time, before step S1, the pin is inserted into the initial pin hole to make the rotating head and the straight rod in a straight line, and after step S3, the pin is inserted into the working pin hole to make the rotating head and the straight rod have a preset angle.

[0021] The advantages of this application include: simple structure and convenient operation. The rotation of the rotating head can be indirectly controlled through the sleeve; the limiting pin can both limit the axial movement of the lever and allow the lever to rotate around itself. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a preferred embodiment of the present application, showing the rotating head and the straight rod at a 0° angle.

[0023] Figure 2 This is a schematic diagram of a preferred embodiment of the present application, showing the rotating head and the straight rod at a 45° angle. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] To solve the above problems, a lever for actuating high-pressure turbine blades includes:

[0026] Sleeve 5, straight rod 4 fitted inside sleeve 5, rotating head 1 hinged to one end of straight rod 4 for turning high pressure turbine blades, and limiting device for positioning engine borescope seat.

[0027] The other end of the straight rod 4 has a handle;

[0028] The sleeve 5 has a long wall extending axially from one side of the protruding end face. Opposite to the long wall is a short wall. The long wall has a sleeve pin 2 on its inner side. The rotating head 1 has a slope on the side near the long wall and a smooth, flat surface on the side near the short wall. When the straight rod 4 drives the rotating head 1 to move axially, the slope of the rotating head 1 slides relative to the sleeve pin 2, and the flat surface of the rotating head 1 slides relative to the short wall, causing the rotating head 1 to swing around the hinge point of the straight rod 4.

[0029] The limiting device includes an adapter 6, an outer nut 8, and a limiting pin 7; the straight rod 4 has a pin hole for insertion, and the sleeve 5 has an elongated hole through which the limiting pin 7 passes and is axially displaced a certain distance; the adapter 6 is fitted with a gap on the outside of the sleeve 5, and the outer nut 8 is fitted with a gap on the outside of the sleeve 5 and threadedly connected to the adapter 6; the end face of the adapter 6 and the inner end face of the outer nut 8 form an annular cavity, and the limiting pin 7 is rotatably placed in the annular cavity.

[0030] Preferably, the straight rod 4 has two locking pin holes with different axial positions near the handle, and the sleeve 5 has corresponding through holes at the locking pin holes. The pin 9 is connected to the through holes through different locking pin holes, so that the straight rod 4 and the sleeve 5 are locked at different axial positions.

[0031] Preferably, the handle is perpendicular to the straight rod 4.

[0032] Preferably, the end of the adapter 6 near the rotating head 1 has a sleeve that inserts into the engine borescope mount, the sleeve radially limiting the adapter 6.

[0033] Preferably, when the straight rod 4 extends relative to the sleeve 5, the angle between the axis of the straight rod 4 and the axis of the rotating head 1 is 45°.

[0034] Preferably, the head of the rotating head 1 has a rubber protective sleeve.

[0035] A method of using a lever for moving high-pressure turbine blades, wherein the lever is used to move high-pressure turbine blades.

[0036] Step S1: Hold the sleeve 5 and pull the straight rod 4 so that the axis of the rotating head 1 is collinear with the axis of the straight rod 4;

[0037] Step S2: Insert the sleeve 5 into the engine borescope holder and limit it axially using the limiting device;

[0038] Step S3: Push the straight rod 4 so that the axis of the rotating head 1 is at a certain angle to the axis of the straight rod 4 and comes into contact with the high-pressure turbine blades;

[0039] Step S4: Rotate the handle to move the high-pressure turbine blades;

[0040] Step S5: After the check, hold the sleeve 5 and pull the straight rod 4 to make the axis of the rotating head 1 collinear with the axis of the straight rod 4;

[0041] Step S6: Rotate the high-pressure turbine and repeat steps S1-S5.

[0042] Preferably, when the straight rod 4 has two initial pin holes and working pin holes with different axial positions near the handle, the sleeve 5 has a corresponding through hole at the locking pin hole; at this time, before step S1, the pin 9 is inserted into the initial pin hole to make the rotating head 1 and the straight rod 4 in a straight line, and after step S3, the pin 9 is inserted into the working pin hole to make the rotating head 1 and the straight rod 4 have a preset angle.

[0043] The advantages of this application include: simple structure and convenient operation. The rotation of the rotating head can be indirectly controlled through the sleeve; the limiting pin can both limit the axial movement of the lever and allow the lever to rotate around itself.

[0044] Its basic principle is as follows:

[0045] lever with Figure 1 The rod is inserted into the engine flow channel and fixed to the engine borescope mount via adapter 6. The limiting pin 7 is restricted by adapter 6 and outer nut 8 to limit the axial movement of the straight rod 4. At the same time, there is a certain gap between the limiting pin 7 and adapter 6 and outer nut 8, so that the straight rod 4 can rotate freely around itself.

[0046] Pull out pin 9, hold sleeve 5 and move it downwards, so that sleeve 2 at the top of sleeve 5 pushes the inclined surface on rotating head 1, causing rotating head 1 to rotate around rotating pin 3. Figure 2 state;

[0047] Insert pin 9 to fix rotating head 1, straight rod 4, and sleeve 5 together;

[0048] Manually rotate the handle at the lower end of the straight rod 4 to drive the rotating head 1 to move the turbine blades;

[0049] After checking, remove pin 9, grasp sleeve 5 and move it upwards, so that the groove at the top of sleeve 5 pushes the rotating head 1 to rotate. Figure 1 Status: Insert pin 9;

[0050] Rotate the high-pressure turbine and perform the above steps to check the tangential movement of each turbine blade. The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lever for actuating high-pressure turbine blades, characterized in that, include: Sleeve (5), straight rod (4) fitted inside sleeve (5), rotating head (1) hinged to one end of straight rod (4) for turning high pressure turbine blades, and limiting device for positioning engine borescope seat; The other end of the straight rod (4) has a handle; The sleeve (5) has a long wall extending axially from one side of the protruding end face. The opposite side of the long wall is a short wall. The inner side of the long wall has a sleeve pin (2). The rotating head (1) has a slope on the side near the long wall and a smooth flat surface on the side near the short wall. When the straight rod (4) drives the rotating head (1) to move axially, the slope of the rotating head (1) slides relative to the sleeve pin (2), and the flat surface of the rotating head (1) slides relative to the short wall, so that the rotating head (1) swings around the hinge point of the straight rod (4). The limiting device includes an adapter (6), an outer nut (8), and a limiting pin (7); the straight rod (4) has a pin hole for inserting the limiting pin (7), and the sleeve (5) has an elongated hole for the limiting pin (7) to pass through and move axially a certain distance; the adapter (6) has a gap sleeve on the outside of the sleeve (5), and the outer nut (8) has a gap sleeve on the outside of the sleeve (5) and is threadedly connected to the adapter (6); the end face of the adapter (6) and the inner end face of the outer nut (8) form an annular cavity, and the limiting pin (7) is rotated and placed in the annular cavity; the straight rod (4) has two locking pin holes with different axial positions near the handle, and the sleeve (5) has corresponding through holes at the locking pin holes; the pin (9) is connected to the through holes through different locking pin holes, so that the straight rod (4) and the sleeve (5) are locked in different axial positions.

2. The lever for actuating high-pressure turbine blades as described in claim 1, characterized in that, The handle is perpendicular to the straight rod (4).

3. The lever for actuating high-pressure turbine blades as described in claim 1, characterized in that, The adapter (6) has a sleeve at one end near the rotating head (1) that is inserted into the engine borescope mount, and the sleeve limits the radial movement of the adapter (6).

4. The lever for actuating high-pressure turbine blades as described in claim 1, characterized in that, When the straight rod (4) extends relative to the sleeve (5), the angle between the axis of the straight rod (4) and the axis of the rotating head (1) is 45°.

5. The lever for actuating high-pressure turbine blades as described in claim 1, characterized in that, The head of the rotating head (1) has a rubber protective sleeve.

6. A method of using a lever for actuating high-pressure turbine blades, comprising using the lever for actuating high-pressure turbine blades as described in any one of claims 1-5, characterized in that... ； Step S1: Hold the sleeve (5) and pull the straight rod (4) to make the axis of the rotating head (1) collinear with the axis of the straight rod (4); Step S2: Insert the sleeve (5) into the engine borescope holder and limit it axially by the limiting device; Step S3: Push the straight rod (4) so ​​that the axis of the rotating head (1) is at a certain angle to the axis of the straight rod (4) and comes into contact with the high-pressure turbine blade; Step S4: Rotate the handle to move the high-pressure turbine blades; Step S5: After the check, hold the sleeve (5) and pull the straight rod (4) to make the axis of the rotating head (1) collinear with the axis of the straight rod (4); Step S6: Rotate the high-pressure turbine and repeat steps S1-S5.

7. The method of using the lever for actuating high-pressure turbine blades as described in claim 6, characterized in that, When there are two initial pin holes and working pin holes with different axial positions near the handle of the straight rod (4), the sleeve (5) has a corresponding through hole at the locking pin hole; at this time, before step S1, the pin (9) is inserted into the initial pin hole so that the rotating head (1) and the straight rod (4) are in a straight line, and after step S3, the pin (9) is inserted into the working pin hole so that the rotating head (1) and the straight rod (4) have a preset angle.

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