Aero-engine power turbine assembly vehicle

Abstract

The invention discloses an aero-engine power turbine assembly vehicle, which belongs to the technical field of aero-engine power turbine assembly, and comprises a vehicle body capable of moving under the action of self-driving or external force; the vehicle frame is arranged on the vehicle body to provide a supporting platform; the overturning assembly is installed on the frame and is in running fit with the frame, an overturning driving source used for driving the overturning assembly to rotate is arranged on the frame, and the rotating center line of the overturning assembly is perpendicular to the axis of the power turbine; the turnover assembly comprises a power turbine case clamping assembly and a power turbine supporting assembly, the power turbine case clamping assembly is used for clamping and fixing a power turbine case, and the power turbine supporting assembly is used for supporting a power turbine body and driving the power turbine body to horizontally move in the axial direction and rotate in the circumferential direction. The method has the advantage that the assembly precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft engine power turbine assembly, in particular to an aircraft engine power turbine assembly vehicle. Background Art

[0002] The power turbine of an aircraft engine is an important component inside the aircraft engine. Its main function is to convert the energy of the high-temperature and high-pressure gas generated by combustion into mechanical energy. The power turbine receives high-speed and high-temperature airflow from the gas turbine and converts the energy of the airflow into rotational mechanical energy through the rotation of the turbine blades.

[0003] The power turbine consists of a body, blades, and a long axis as a whole. The power turbine is required to rise vertically from the inside of the lower part of the power turbine casing to assemble with the blades in the power turbine casing. The assembly dimensions require a vertical spacing dimension of 180±0.1 mm. Since the assembly process requires the blades on the power turbine to be matched with the blades in the casing, and the assembly of the two blades is directional, the power turbine is required to be assembled only vertically on the inside of the lower casing, and the assembly process needs to have a self-rotation adjustment function around the long axis. Therefore, it is also necessary to position the assembled power turbine and casing as a whole, then flip the whole 180°, and then measure the vertical spacing dimension of 180±0.1 mm using a measuring tool. Since the power turbine assembly is 1.1 meters long and slender, and needs to be flipped 180° to measure the assembly dimensions in the vertical direction, it requires the cooperation of multiple people and the assistance of a hanging device. Without tooling, the assembly accuracy is low. Summary of the invention

[0004] The invention provides an aircraft engine power turbine assembly vehicle to solve the technical problem of low assembly precision due to difficulty in turning over during the assembly process of the aircraft engine power turbine.

[0005] According to one aspect of the present invention, there is provided an aircraft engine power turbine assembly vehicle, comprising a vehicle body capable of moving by self-drive or under the action of external force; a frame arranged on the vehicle body to provide a support platform; a flip assembly mounted on the frame and rotatably coordinated with the frame, the frame being provided with a flip drive source for driving the flip assembly to rotate, the rotation centerline of the flip assembly being perpendicular to the axis of the power turbine; the flip assembly comprising a power turbine casing clamping assembly and a power turbine support assembly, the power turbine casing clamping assembly being used for clamping and fixing the power turbine casing, the power turbine support assembly being used for supporting a power turbine body and driving the power turbine body to translate axially and rotate circumferentially.

[0006] Optionally, the power turbine casing clamping assembly includes a pressure plate, an upper positioning plate and a pull rod, the pressure plate is arranged on the upper surface of the power turbine casing, the upper positioning plate is arranged on the lower surface of the power turbine casing, and the pull rod connects and tightens the upper positioning plate and the pressure plate to clamp the power turbine casing.

[0007] Optionally, the power turbine support assembly includes a lower positioning plate connected to the upper positioning plate, a fixed sleeve arranged on the lower positioning plate, an adjusting sleeve threadedly connected to the fixed sleeve, and a movable sleeve fixedly connected to the power turbine, the movable sleeve movably inserted into the fixed sleeve, the movable sleeve and the adjusting sleeve are both sleeved on the shaft of the power turbine, and the adjusting sleeve is located below the movable sleeve to support the movable sleeve.

[0008] Optionally, a fixing bolt for locking the movement of the movable sleeve rod is provided on the fixed sleeve, the fixing bolt is threadably matched with the fixed sleeve, and the end of the fixing bolt passes through the fixed sleeve and is pressed against the outer wall of the movable sleeve rod.

[0009] Optionally, a thrust ball bearing is provided between the movable sleeve rod and the adjusting sleeve rod.

[0010] Optionally, the flip assembly also includes a rocker arm arranged between the upper positioning plate and the lower positioning plate, the rocker arm is symmetrically provided with a left rotating shaft and a right rotating shaft, and the frame is provided with a left shaft sleeve cooperating with the left rotating shaft and a right shaft sleeve cooperating with the right rotating shaft.

[0011] Optionally, the flip driving source includes a support arranged on the frame and a reducer arranged on the support, the input end of the reducer is connected to a handle, and the output end of the reducer is transmission-connected to the left rotating shaft or the right rotating shaft.

[0012] Optionally, the aircraft engine power turbine assembly vehicle also includes a shaft tail positioning assembly, which includes a positioning base arranged on the vehicle body and a spline sleeve installed on the positioning base, the spline sleeve cooperates with the shaft tail of the power turbine through a spline, so that the rotation of the power turbine shaft tail is restricted when the power turbine shaft tail is inserted into the spline sleeve, and the height position of the spline sleeve matches the power turbine specification, so that after the power turbine is moved axially to an assembly position matching the power turbine casing, the shaft tail of the power turbine is separated from the spline sleeve.

[0013] Optionally, two handles are symmetrically arranged on the adjusting sleeve rod, and the handles are perpendicular to the axis of the adjusting sleeve rod.

[0014] Optionally, a brake universal wheel is provided at the bottom of the vehicle body, and a vehicle pusher socket is provided at one side of the vehicle body, and a vehicle pusher is plugged into and matched with the pusher socket.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The flip assembly is installed on the frame and rotates with the frame. The flip drive source on the frame is used to drive the flip assembly to rotate, ensuring that the rotation center line of the flip assembly is perpendicular to the axis of the power turbine, thereby ensuring the alignment accuracy during assembly; the power turbine casing clamping assembly in the flip assembly firmly clamps and fixes the power turbine casing, and the power turbine support assembly supports the power turbine body so that it can translate axially and rotate circumferentially. This design can ensure that the power turbine and the casing are accurately aligned during the assembly process, and by controlling their rotation and translation movements, error accumulation can be avoided, thereby improving the overall assembly accuracy.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 It is a front view of the aircraft engine power turbine assembly vehicle of the present invention;

[0020] Figure 2 It is a cross-sectional view of the aircraft engine power turbine assembly vehicle of the present invention.

[0021] Legend:

[0022] 1. Car body; 2. Car frame; 3. Flip assembly; 4. Car pusher; 5. Brake universal wheel; 6. Car pusher socket; 7. Pressure plate; 8. Pull rod; 9. Moving sleeve rod; 10. Fixed sleeve; 11. Upper positioning plate; 12. Fastening bolt; 13. Thrust ball bearing; 14. Left shaft; 15. Left bushing; 16. Right shaft; 17. Right bushing; 18. Lower positioning; 19. Adjusting sleeve rod; 20. Handle; 21. Handle; 22. Reducer; 23. Support; 24. Positioning base; 25. Spline sleeve. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0024] The following is combined with Figure 1-2 This application is described in further detail.

[0025] The embodiment of the present application discloses an aircraft engine power turbine assembly vehicle.

[0026] Reference Figure 1, an aircraft engine power turbine assembly vehicle, including a vehicle body 1, a frame 2 and a flip assembly 3, the vehicle body 1 can move by self-drive or under the action of external force; the frame 2 is arranged on the vehicle body 1 to provide a support platform; the flip assembly 3 is installed on the frame 2 and rotates with the frame 2, and a flip driving source for driving the flip assembly 3 to rotate is arranged on the frame 2, and the rotation center line of the flip assembly 3 is perpendicular to the axis of the power turbine; the flip assembly 3 includes a power turbine casing clamping assembly and a power turbine supporting assembly, the power turbine casing clamping assembly is used to clamp and fix the power turbine casing, and the power turbine supporting assembly is used to support the power turbine body and drive the power turbine body to translate axially and rotate circumferentially.

[0027] The assembly vehicle can move freely through the self-drive of the vehicle body 1 or external force, and the frame 2 provides a stable support platform for the entire assembly process. The flip assembly 3 is installed on the frame 2 and cooperates with the rotation thereof to make the flipping action more stable and precise. The flip driving source is responsible for driving the rotation of the flip assembly 3 to ensure that the rotation center line of the flip assembly 3 is perpendicular to the axis of the power turbine, thereby ensuring the alignment accuracy during assembly; the power turbine casing clamping assembly in the flip assembly 3 is used to firmly fix the power turbine casing to prevent displacement during flipping or movement, and the power turbine support assembly supports and adjusts the axial translation and circumferential rotation of the power turbine body, thereby making the assembly process more precise and ensuring the pairing and assembly accuracy of the power turbine and the casing, thereby effectively improving the efficiency and accuracy of the entire assembly process.

[0028] Reference Figure 2 The power turbine casing clamping assembly includes a pressure plate 7, an upper positioning plate 11 and a pull rod 8. The pressure plate 7 is arranged on the upper surface of the power turbine casing, the upper positioning plate 11 is arranged on the lower surface of the power turbine casing, and the pull rod 8 connects and tightens the upper positioning plate 11 and the pressure plate 7 to clamp the power turbine casing. The pressure plate 7 is arranged on the upper surface of the power turbine casing, the upper positioning plate 11 is arranged on the lower surface of the casing, the pull rod 8 connects the upper positioning plate 11 and the pressure plate 7, and by tightening the pull rod 8, the upper and lower positioning plates 18 and the pressure plate 7 clamp the casing at the same time, thereby ensuring that the casing remains stable and motionless during the assembly process, which can prevent the misalignment or movement of the casing, ensure accurate alignment with the power turbine, and ensure the accuracy and stability of the entire assembly process. Specifically, one end of the pull rod 8 is threadedly matched with the upper positioning plate 11, and the other end of the pull rod 8 passes through the pressure plate 7 and is threadedly connected with a nut.

[0029] The power turbine support assembly includes a lower positioning plate 18 connected to an upper positioning plate 11, a fixed sleeve 10 disposed on the lower positioning plate 18, an adjusting sleeve rod 19 threadedly connected to the fixed sleeve 10, and a movable sleeve rod 9 fixedly connected to the power turbine, wherein the movable sleeve rod 9 is movably inserted into the fixed sleeve 10, and both the movable sleeve rod 9 and the adjusting sleeve rod 19 are sleeved on the shaft of the power turbine, and the adjusting sleeve rod 19 is located below the movable sleeve rod 9 to support the movable sleeve rod 9. The lower positioning plate 18 provides a stable support platform by being connected to the upper positioning plate 11, the fixed sleeve 10 is mounted on the lower positioning plate 18, and the adjusting sleeve rod 19 threadedly connected thereto can adjust the up and down displacement of the power turbine by rotation, and the movable sleeve rod 9 is fixedly connected to the power turbine and movably passes through the fixed sleeve 10, allowing the power turbine to move or rotate axially when necessary. The adjusting sleeve rod 19 is located below the movable sleeve rod 9 and is used to support and adjust the height of the movable sleeve rod 9. Through the threaded drive system, the operator can accurately control the up and down movement and rotation of the power turbine, thereby achieving accurate positioning and assembly of the turbine in the casing.

[0030] The fixed sleeve 10 is provided with a set bolt 12 for locking the movement of the movable sleeve 9. The set bolt 12 is threadedly matched with the fixed sleeve 10, and the end of the set bolt 12 passes through the fixed sleeve 10 and is pressed against the outer wall of the movable sleeve 9. The set bolt 12 is threadedly matched with the fixed sleeve 10. When the operator rotates the set bolt 12, the end of the bolt will pass through the fixed sleeve 10 and press against the outer wall of the movable sleeve 9. The friction between the bolt and the sleeve is used to fix the movable sleeve 9 so that it remains stationary during the assembly process. This design ensures that when the position needs to be precisely fixed, the power turbine will not deviate in position due to external force or operation, thereby maintaining the stability and accuracy of the assembly.

[0031] A thrust ball bearing 13 is provided between the movable sleeve rod 9 and the adjustment sleeve rod 19. The thrust ball bearing 13 is provided between the movable sleeve rod 9 and the adjustment sleeve rod 19 to reduce the friction between the sleeve rods during the assembly process of the power turbine, so that the movable sleeve rod 9 can be more smoothly translated or rotated along the axial direction while maintaining high stability and precision. The thrust ball bearing 13 is designed to withstand axial loads and allow rotation, which makes the movement of the movable sleeve rod 9 easier and more accurate when the adjustment sleeve rod 19 drives the movable sleeve rod 9 to rise or fall or rotate, reducing the influence of mechanical friction on assembly precision.

[0032] The flip assembly 3 also includes a rocker arm arranged between the upper positioning plate 11 and the lower positioning plate 18, and a left shaft 14 and a right shaft 16 are symmetrically arranged on the rocker arm. A left shaft sleeve 15 cooperating with the left shaft 14 and a right shaft sleeve 17 cooperating with the right shaft 16 are arranged on the frame 2. Through the design of the rocker arm, the left shaft 14 and the right shaft 16, the flip assembly 3 can achieve a stable and symmetrical 180° flip. The rocker arm is connected between the upper positioning plate 11 and the lower positioning plate 18, and plays a role in supporting and transmitting force. The left shaft 14 and the right shaft 16 are symmetrically arranged, respectively cooperating with the left shaft sleeve 15 and the right shaft sleeve 17 on the frame 2, forming the rotation axis of the power turbine flip. This design ensures balance and accuracy during flipping, can effectively withstand the force generated during flipping, avoid shaking or instability during flipping, and ensure that the flip assembly process of the power turbine and the casing is stable and smooth.

[0033] The flip driving source includes a support 23 arranged on the frame 2 and a reducer 22 arranged on the support 23, the input end of the reducer 22 is connected with a handle 21, and the output end of the reducer 22 is connected to the left shaft 14 or the right shaft 16. The function of the reducer 22 is to reduce the rotation speed of the handle 21 and increase the torque at the same time, so as to ensure that the flipping process is more stable and accurate. The operator inputs power to the reducer 22 by rotating the handle 21, and the reducer 22 converts the high-speed small torque rotation of the handle 21 into a low-speed large torque rotation output, and drives the flip assembly 3 to flip 180° through the transmission connection with the left shaft 14 or the right shaft 16. The advantage of this design is that the flipping action can be carried out more easily, avoiding the instability that may be caused by rapid flipping, and at the same time, due to the regulating effect of the reducer 22, the flipping process is more stable and controllable.

[0034] The aircraft engine power turbine assembly vehicle also includes a shaft tail positioning assembly, which includes a positioning base 24 provided on the vehicle body 1 and a spline sleeve 25 installed on the positioning base 24. The spline sleeve 25 cooperates with the shaft tail of the power turbine through a spline, so that the self-rotation of the shaft tail of the power turbine is limited when the shaft tail of the power turbine is inserted into the spline sleeve 25. The height position of the spline sleeve 25 matches the specifications of the power turbine, so that after the power turbine is moved axially to an assembly position matching the power turbine casing, the shaft tail of the power turbine is separated from the spline sleeve 25. The shaft tail positioning assembly cooperates with the positioning base 24 provided on the vehicle body 1 and the spline sleeve 25 installed on the positioning base 24. The spline sleeve 25 and the shaft tail of the power turbine are precisely matched through a spline structure. When the shaft tail of the power turbine is inserted into the spline sleeve 25, the self-rotation is limited, preventing the power turbine from unexpectedly rotating during the assembly process, and ensuring stability when moving axially. The height position of the spline sleeve 25 is designed to match the specifications of the power turbine, so that the power turbine can be moved axially to a precise assembly position, and after assembly, the shaft tail of the power turbine can naturally separate from the spline sleeve 25 without affecting subsequent operations. Therefore, this structure not only ensures the stability of the position and posture of the power turbine during assembly, but also allows for easy separation after assembly, thereby improving assembly efficiency and accuracy.

[0035] Two handles 20 are symmetrically arranged on the adjustment sleeve 19, and the handles 20 are axially perpendicular to the adjustment sleeve 19. By symmetrically arranging the two handles 20 on the adjustment sleeve 19, and the handles 20 are axially perpendicular to the adjustment sleeve 19, the operator can easily drive the adjustment sleeve 19 by rotating the handles 20, thereby controlling the up and down movement or circumferential rotation of the power turbine. The symmetrical design of the handles 20 helps to balance the force, making the adjustment process smoother and more stable, and reducing the uneven torque or offset that may be generated during unilateral operation.

[0036] The bottom of the vehicle body 1 is provided with a brake universal wheel 5, and a vehicle pusher 4 socket is provided on one side of the vehicle body 1, and the vehicle pusher 4 is plugged into the pusher socket. The brake universal wheel 5 provided at the bottom of the vehicle body 1 enables the assembly vehicle to move flexibly between different workstations, so that the assembly vehicle can adjust its position as needed; when the assembly vehicle reaches the specified position, the brake function can lock the universal wheel to ensure that the assembly vehicle remains stable during the assembly process and prevent position deviation from affecting the assembly accuracy. The pusher socket on one side of the vehicle body 1 is used to insert the vehicle pusher 4. The matching design of the pusher allows the operator to easily push or drag the assembly vehicle, thereby facilitating the movement of the assembly vehicle within a larger range.

[0037] The steps of assembling the power turbine of an aircraft engine include:

[0038] Step S100: The power turbine shaft is placed with the tail facing downward on the flip assembly 3 of the assembly vehicle, and the power turbine is placed firmly on the flip assembly 3 of the assembly vehicle, ensuring that the axis of the power turbine is perpendicular to the rotation centerline of the flip assembly 3, and ensuring subsequent precise alignment and assembly. This step is the basis of the entire assembly process, ensuring that the power turbine is in the correct initial position to avoid deviations in subsequent assembly.

[0039] Step S200: Install the power turbine casing so that the casing is coaxial with the power turbine, firmly fix the power turbine casing through the power turbine casing clamping assembly (including the pressure plate 7, the upper positioning plate 11 and the pull rod 8), and ensure that the axis of the casing is coaxial with the axis of the power turbine to ensure accurate alignment during assembly. This step ensures that the casing and the power turbine are in an ideal matching state through the clamping device to prevent displacement or misalignment during subsequent movement or flipping.

[0040] Step S300: Move the power turbine axially upward to the preset installation position, and drive the power turbine to rise smoothly axially by adjusting the sleeve rod 19 to move the power turbine to the designated assembly position. The cooperation of the adjustment sleeve rod 19 and the moving sleeve rod 9 makes the up and down movement process precisely controllable, ensuring the assembly accuracy. This step ensures that the distance between the power turbine and the casing blades meets the requirements and reaches a vertical spacing of 180±0.1 mm.

[0041] Step S400: Rotate and adjust the power turbine to accurately match the blades in the casing, and adjust the power turbine's rotation by moving the sleeve rod 9, so that the blades of the power turbine and the blades in the casing are accurately matched in direction. This step ensures the stability and accuracy of the rotation process through the design of the thrust ball bearing 13, ensuring that the directional assembly of the blades meets the requirements.

[0042] Step S500: Lock the power turbine casing and the power turbine, perform a 180° flip, lock the movable sleeve rod 9 by the fixing bolt 12, fix the relative position of the power turbine and the casing, and use the flip assembly 3 to flip the power turbine and the casing as a whole 180°, so that the tail of the power turbine shaft faces upward. The reducer 22 and the rocker arm design in the flip assembly 3 ensure smooth flipping action and will not affect the relative position and assembly accuracy of the power turbine and the casing. This step of flipping operation is to facilitate subsequent measurement and inspection operations.

[0043] Step S600: Measure the vertical spacing and confirm the assembly accuracy. Use the measuring tool to measure the vertical spacing of the flipped power turbine and casing to ensure that the vertical spacing after assembly meets the requirement of 180±0.1 mm. If the measurement results meet the requirements, the assembly process is completed. If not, readjustment is required. This step, through precise measurement, finally confirms whether the assembly meets the strict tolerance requirements and ensures that the blade spacing and overall assembly accuracy meet the design standards.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aircraft engine power turbine assembly vehicle, characterized in that: include: The vehicle body (1) can move by itself or under the action of external force; A vehicle frame (2) is arranged on the vehicle body (1) to provide a supporting platform; The flip assembly (3) is mounted on the vehicle frame (2) and is rotatably matched with the vehicle frame (2). The vehicle frame (2) is provided with a flip driving source for driving the flip assembly (3) to rotate. The rotation centerline of the flip assembly (3) is perpendicular to the axis of the power turbine. The flip assembly (3) comprises a power turbine casing clamping assembly and a power turbine supporting assembly, wherein the power turbine casing clamping assembly is used to clamp and fix the power turbine casing, and the power turbine supporting assembly is used to support the power turbine body and drive the power turbine body to translate axially and rotate circumferentially.

2. The aircraft engine power turbine assembly vehicle according to claim 1, characterized in that: The power turbine casing clamping assembly comprises a pressure plate (7), an upper positioning plate (11) and a pull rod (8), wherein the pressure plate (7) is arranged on the upper surface of the power turbine casing, the upper positioning plate (11) is arranged on the lower surface of the power turbine casing, and the pull rod (8) connects and tightens the upper positioning plate (11) and the pressure plate (7) to clamp the power turbine casing.

3. The aircraft engine power turbine assembly vehicle according to claim 2, characterized in that: The power turbine support assembly comprises a lower positioning plate (18) connected to an upper positioning plate (11), a fixed sleeve (10) arranged on the lower positioning plate (18), an adjusting sleeve rod (19) threadedly connected to the fixed sleeve (10), and a movable sleeve rod (9) fixedly connected to the power turbine, wherein the movable sleeve rod (9) is movably inserted into the fixed sleeve (10), the movable sleeve rod (9) and the adjusting sleeve rod (19) are both sleeved on the shaft of the power turbine, and the adjusting sleeve rod (19) is located below the movable sleeve rod (9) to support the movable sleeve rod (9).

4. The aircraft engine power turbine assembly vehicle according to claim 3, characterized in that: The fixed sleeve (10) is provided with a fixing bolt (12) for locking the movement of the movable sleeve rod (9); the fixing bolt (12) is threadedly matched with the fixed sleeve (10); the end of the fixing bolt (12) passes through the fixed sleeve (10) and is pressed against the outer wall of the movable sleeve rod (9).

5. The aircraft engine power turbine assembly vehicle according to claim 3, characterized in that: A thrust ball bearing (13) is arranged between the movable sleeve rod (9) and the adjusting sleeve rod (19).

6. The aircraft engine power turbine assembly vehicle according to claim 5, characterized in that: The flip assembly (3) also includes a rocker arm arranged between an upper positioning plate (11) and a lower positioning plate (18), a left rotating shaft (14) and a right rotating shaft (16) being symmetrically arranged on the rocker arm, and a left shaft sleeve (15) cooperating with the left rotating shaft (14) and a right shaft sleeve (17) cooperating with the right rotating shaft (16) being arranged on the frame (2).

7. The aircraft engine power turbine assembly vehicle according to claim 6, characterized in that: The overturning driving source comprises a support (23) arranged on the frame (2) and a reducer (22) arranged on the support (23); the input end of the reducer (22) is connected to a handle (21); and the output end of the reducer (22) is drivingly connected to a left rotating shaft (14) or a right rotating shaft (16).

8. The aircraft engine power turbine assembly vehicle according to claim 1, characterized in that: The aircraft engine power turbine assembly vehicle further comprises a shaft tail positioning assembly, the shaft tail positioning assembly comprising a positioning base (24) arranged on the vehicle body (1) and a spline sleeve (25) mounted on the positioning base (24), the spline sleeve (25) being matched with the shaft tail of the power turbine via a spline, so that the self-rotation of the shaft tail of the power turbine is restricted when the shaft tail of the power turbine is inserted into the spline sleeve (25), the height position of the spline sleeve (25) matches the specification of the power turbine, so that after the power turbine is moved axially to an assembly position matching the power turbine casing, the shaft tail of the power turbine is separated from the spline sleeve (25).

9. The aircraft engine power turbine assembly vehicle according to claim 4, characterized in that: Two handles (20) are symmetrically arranged on the adjusting sleeve rod (19), and the handles (20) are axially perpendicular to the adjusting sleeve rod (19).

10. The aircraft engine power turbine assembly vehicle according to claim 1, characterized in that: The bottom of the vehicle body (1) is provided with a brake universal wheel (5), and one side of the vehicle body (1) is provided with a vehicle push handle (4) socket, and the vehicle push handle (4) is plugged into and matched with the push handle socket.

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