Mounting mechanism and mounting method for reverse thrust exhaust volute of aero-engine

Abstract

The invention discloses a mounting mechanism and a mounting method for reverse thrust exhaust volutes of an aero-engine, the mechanism comprises a pre-embedded steel beam, a track assembly, a transport vehicle and volutes, the pre-embedded steel beam is connected with the track assembly, the two volutes are connected to the track assembly through the transport vehicle, and the moving direction of the transport vehicle can be changed by 90 degrees on the track assembly, so that the two volutes are aligned. According to the technical scheme, the mounting mechanism for the reverse thrust exhaust volute of the aero-engine and the mounting method of the mounting mechanism have remarkable technical effects and innovative advantages. The installation efficiency and accuracy are improved, and the installation difficulty and the labor cost are reduced. And meanwhile, due to the characteristics of intelligent control, modular design, no influence on the test result of the test bench and the like, the mounting mechanism has a wider application prospect and a higher practical value in the field of aero-engine test.

Description

Technical Field

[0001] The invention belongs to the technical field of thrust reverser exhaust volute installation, and in particular relates to an installation mechanism and an installation method for a thrust reverser exhaust volute of an aero-engine. Background Art

[0002] When an aircraft engine is tested for reverse thrust on a ground test bench, the main purpose is to examine the reverse thrust performance of the engine and collect and analyze the data. When the engine is tested for reverse thrust, the reverse thrust device on the engine is turned on to generate reverse thrust airflow in the direction of the air intake. In order to prevent the reverse thrust airflow from being sucked into the engine and the turbulence and pipeline damage in the test chamber caused by the reverse thrust airflow, a reverse thrust exhaust volute is required to collect the reverse thrust exhaust airflow and guide it to be discharged in the direction of the ejector tube, and then discharged from the ejector tube to the test chamber.

[0003] At present, the installation of the reverse thrust exhaust volute is carried out in the form of ground track installation. The reverse thrust exhaust volute is installed on the transport vehicle and the matching position of the volute and the engine is manually controlled through the ground track. The volute installation equipment is large in size, and the safety measures such as unlimited positions make the installation of the reverse thrust exhaust volute difficult and require high personnel capabilities. There is a risk of damage to the product during the installation process. The existing installation method requires 4 professional operators to work at the same time for about 3 hours to complete the installation and disassembly of the volute, and the installation and disassembly time is long. Summary of the invention

[0004] The purpose of the present invention is to provide an installation mechanism and an installation method for an aircraft engine reverse thrust exhaust volute, so as to solve the problems of long installation and disassembly time in the prior art and the risk of damaging the product during the installation process.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A mounting mechanism for an aircraft engine thrust reverse exhaust volute comprises a pre-buried steel beam, a track assembly, a transport vehicle and a volute, wherein the pre-buried steel beam is connected to the track assembly, two volutes are connected to the track assembly via the transport vehicle, and the moving direction of the transport vehicle can be changed by 90 degrees at the track assembly to align the two volutes.

[0006] Furthermore, the embedded steel beams are two parallel steel beams.

[0007] Furthermore, the track assembly includes two forward tracks, two return tracks and two rotating tracks. The return track and the rotating track are installed under one embedded steel beam, and the forward track is installed under another embedded steel beam. The two forward tracks are parallel to each other and perpendicular to the return track. The two rotating tracks are respectively arranged between the forward track and the return track, and the rotating track can be connected with the forward track or the return track when rotating.

[0008] Furthermore, the two forward rails, the two return rails and the two rotating rails are all connected to the embedded steel beams through connectors, and the forward rails, the return rails and the rotating rails are all parallel to the embedded steel beams.

[0009] Furthermore, a track rotating mechanism is provided on the connecting piece of the rotating track.

[0010] Furthermore, the track rotating mechanism is a rotary reduction motor, the output end of the rotary reduction motor is connected to the rotating track, and the rotary reduction motor is connected to an external PLC control system.

[0011] Furthermore, the transport vehicle is a self-propelled drive vehicle, the driving wheels of the transport vehicle are stuck on the track assembly, and the transport vehicle is connected to an external PLC control system to control the movement of the transport vehicle; a laser rangefinder is provided on the transport vehicle to determine the position of the transport vehicle.

[0012] Furthermore, the volute is connected to the transport vehicle through a support frame, and a latch mechanism is provided on the transport vehicle for fixing the transport vehicle.

[0013] Furthermore, the support frame and the volute are connected via a gap adjustment mechanism, and the gap adjustment mechanism is a telescopic rod for adjusting the distance between the two volutes.

[0014] A method for installing an aircraft engine thrust reverse exhaust volute comprises the following steps: The initial position of the volute is at the end of the return track, connected to the transport vehicle through a support frame, and the position of the transport vehicle is determined by a laser rangefinder; When the rotating track is connected to the return track, the transport vehicle moves forward to the rotating track position, starts the track rotation mechanism, controls the rotation degree of the rotating track, and when the rotating track is connected to the forward track, the rotating track rotates to the position, and the transport vehicle continues to move forward; The transport vehicle continues to move on the forward track to the working position on the engine side, at which point the forward movement of the transport vehicle is completed, and the latch mechanism is locked to fix the position of the transport vehicle; Control the clearance adjustment mechanism to work. When it is extended to the full position, the motor stops working and the indicator light comes on. At this point, the installation of the reverse thrust volute is completed.

[0015] Compared with the prior art, the present invention has the following technical effects: The present invention realizes the automatic installation and disassembly of the volute by pre-embedded steel beams, track components and transport vehicles. The entire installation process does not require direct manual operation, which greatly improves work efficiency and safety.

[0016] The rotating track design in the track assembly enables the transport vehicle to achieve a 90° turn on the track, so that the two volutes can be easily aligned with the engine installation position. This design enhances the flexibility of the installation mechanism, enabling it to adapt to the installation needs of aircraft engines of different models and sizes.

[0017] The laser rangefinder equipped on the transport vehicle can accurately determine the position of the transport vehicle, ensuring the precise positioning of the volute during installation. At the same time, the application of the gap adjustment mechanism also allows the spacing between the two volutes to be accurately adjusted, ensuring the installation quality.

[0018] The overall size of the mounting mechanism is small, and it does not take up a lot of space, and can save a lot of space resources, especially when storing. This is especially important for a test bench with limited space.

[0019] Compared with the traditional manual installation method, this technical solution shortens the installation time from 3 hours to 20 minutes, and only one test operator is required to complete the operation. This greatly improves the installation efficiency and reduces the installation difficulty and labor cost.

[0020] Through the external PLC control system, the transport vehicle, track rotation mechanism, etc. are intelligently controlled, realizing the automation and intelligence of the installation process. This control method not only improves the accuracy and stability of the installation, but also makes the entire installation process more controllable and reliable.

[0021] The installation mechanism adopts a modular design concept, and the components are tightly connected and easy to disassemble and replace. This design method is not only easy to maintain and service, but also makes the entire installation mechanism more flexible and expandable.

[0022] The installation mechanism is not connected to the fixed frame of the test bench in any way, so the test results of the test bench will not be affected by the installation of the reverse thrust test equipment. This feature makes the installation mechanism have a wider application prospect in the field of aircraft engine testing.

[0023] In summary, the installation mechanism and installation method of the reverse thrust exhaust volute of an aircraft engine proposed in this technical solution have significant technical effects and innovative advantages. It not only improves the installation efficiency and accuracy, but also reduces the installation difficulty and labor costs. At the same time, its intelligent control, modular design, and no influence on the test bench test results also make the installation mechanism have a wider application prospect and higher practical value in the field of aircraft engine testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Parking position of the rear wall of the thrust-reverse exhaust volute; Figure 2 The exhaust volute is pushed back to move to the middle corner position; Figure 3 The reverse thrust exhaust volute is rotated 90 degrees at the corner position; Figure 4 The thrust reverse volute is in the test position.

[0025] in: 1. Transport vehicle; 2. Support frame; 3. Volute; 4. Embedded steel beam; 5. Forward track; 6. Return track; 7. Rotating track; 8. Track rotating mechanism; 9. Latch mechanism; 10. Gap adjustment mechanism. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings: Example 1, please refer to Figure 1 The present invention provides an installation mechanism for an aircraft engine reverse thrust exhaust volute, comprising an embedded steel beam 4, a track assembly, a transport vehicle 1 and a volute 3, wherein the embedded steel beam 4 is connected to the track assembly, and two volutes 3 are connected to the track assembly through the transport vehicle 1, and the moving direction of the transport vehicle 1 can be changed by 90° on the track assembly to align the two volutes 3.

[0027] The pre-buried steel beam 4 is firmly connected to the track assembly, providing a precise moving path for the transport vehicle 1. The transport vehicle 1 can move along the track assembly and can achieve a 90° turn on the track assembly, which enables the two volutes 3 to be accurately aligned with the installation position of the engine. This design significantly improves the installation accuracy of the volute and ensures the normal operation of the engine reverse thrust exhaust system.

[0028] The design of the track assembly allows the transport vehicle 1 to move in multiple directions thereon, especially the 90° turning capability, so that the installation mechanism can adapt to different installation scenarios and space constraints. This flexibility makes the installation process more convenient and reduces the installation difficulties caused by space constraints.

[0029] The traditional volute installation method may require a lot of manual adjustment and alignment, while the installation mechanism achieves accurate installation of the volute in a mechanized and automated manner. The movement and steering of the transport vehicle 1 are both completed by mechanical drive, which greatly improves the installation efficiency and shortens the installation period.

[0030] Since the installation mechanism improves installation accuracy and efficiency and reduces the time for manual adjustment and alignment, it also reduces installation costs. At the same time, the mechanized installation method also reduces installation errors and damage caused by human factors, further reducing the cost of maintenance and replacement.

[0031] The embedded steel beam 4 is the basic support of the entire installation mechanism, and its stability is directly related to the stability of the entire system. By properly designing and installing the embedded steel beam 4, the stability of the track assembly and the transport vehicle 1 during operation can be ensured, thereby ensuring the accuracy of the volute installation and the long-term stability of the system.

[0032] In summary, this installation mechanism of the thrust reverse exhaust volute of an aircraft engine has shown remarkable technical effects in improving installation accuracy, enhancing installation flexibility, improving installation efficiency, reducing installation costs, and enhancing system stability through its unique design and working principle. This installation mechanism not only provides a reliable installation guarantee for the thrust reverse exhaust system of the aircraft engine, but also provides strong support for the overall performance and safety of the aircraft engine.

[0033] Embodiment 2, the present invention provides a mounting mechanism for an aircraft engine thrust reverse exhaust volute, specifically comprising: The mechanism is mainly composed of key components such as embedded steel beams 4, track components, transport vehicles 1, and volutes 3. Among them, the embedded steel beams 4 serve as the basic support of the entire installation mechanism and are designed as two parallel steel beams to ensure the stability and bearing capacity of the structure. The track components are connected to the embedded steel beams 4, providing a precise moving path for the transport vehicle 1. The two volutes 3 are firmly connected to the transport vehicle 1 through the support frame 2, making the entire installation process more convenient and efficient.

[0034] The track assembly is the core part of the present invention, which includes two forward tracks 5, two return tracks 6 and two rotating tracks 7. The forward track 5 and the return track 6 are respectively installed under the two embedded steel beams 4, and the forward track 5 and the return track 6 are perpendicular to each other, forming a right-angle turn path. The rotating track 7 is arranged between the forward track 5 and the return track 6, connected to the embedded steel beam 4 through a connector, and can achieve a 90° rotation under the drive of the track rotation mechanism 8. This design enables the transport vehicle 1 to flexibly change the moving direction on the track assembly, ensuring that the two volutes 3 can be accurately aligned with the installation position of the engine. The track rotation mechanism 8 adopts a rotary reduction motor, which is precisely controlled by an external PLC control system to ensure the accuracy and stability of the rotation.

[0035] The transport vehicle 1 is a key component used to carry and move the volute 3 in the present invention. It adopts a self-propelled drive design, and the driving wheel is stuck on the track assembly, and precise control is achieved through an external PLC control system. The transport vehicle 1 is equipped with a laser rangefinder for real-time measurement and determination of its position to ensure the accuracy of installation. In addition, a latch mechanism 9 is also provided on the transport vehicle 1 to fix the position of the transport vehicle when necessary to ensure stability during the installation process. The support frame 2 is connected to the volute 3 through a gap adjustment mechanism 10, which adopts a telescopic rod design and can flexibly adjust the distance between the two volutes to meet the installation requirements of engines of different models. The entire installation mechanism realizes an efficient and precise installation process through automated control, greatly reducing the difficulty and risk of manual operation.

[0036] Embodiment 3, a method for installing an aircraft engine thrust reverse exhaust volute, comprising the following steps: The initial position of the volute is at the end of the return track 6, connected to the transport vehicle 1 through the support frame 2, and the position of the transport vehicle 1 is determined by a laser rangefinder; When the rotating track 7 is connected to the return track 6, the transport vehicle moves forward to the rotating track position, the track rotation mechanism 8 is started, and the rotating track 7 is controlled to rotate 90 degrees. When the rotating track 7 is connected to the forward track 5, the rotating track rotates to the position, and the transport vehicle 1 continues to move forward; The transport vehicle 1 continues to move on the forward track 5 to the working position on the engine side, at which point the forward movement of the transport vehicle 1 is completed, and the latch mechanism is locked to fix the position of the transport vehicle 1; Control the clearance adjustment mechanism to work. When it is extended to the full position, the motor stops working and the indicator light comes on. At this point, the installation of the reverse thrust volute is completed.

[0037] Volute disassembly process: After the test is completed, the operator retracts the gap adjustment mechanism, and after the gap adjustment mechanism is retracted into place, the pin insertion and extraction operations are performed.

[0038] After the pin insertion and extraction mechanism has pulled the pin into place, the transport vehicle 1 is operated to move backward.

[0039] The transport vehicle 1 is controlled to retreat to the rotating track. After the position indicator of the transport vehicle 1 retreats to the position of the rotating track, the rotating track is controlled to be connected with the return track. The transport vehicle 1 can be retreated only after the rotating track is returned to the position.

[0040] Control the transport vehicle 1 to return to the return position, and the indicator shows that the transport vehicle 1 has returned to the position. At this point, the disassembly of the reverse thrust exhaust volute is completed. The reverse thrust exhaust volutes on both sides can be installed and disassembled in a single motion or in a linkage.

[0041] Chain requirements: When the transport vehicle 1 is in the return position, the rotation in place signal light is on, and the reverse in place signal light is on, allowing the transport vehicle 1 to move forward, prohibiting the transport vehicle 1 from moving backward, and prohibiting the rotation track.

[0042] When the transport vehicle 1 advances to the rotating mechanism position, the forward position signal light is on, the track is allowed to rotate, the transport vehicle 1 is allowed to move backward, and the transport vehicle 1 is prohibited from moving forward.

[0043] When the transport vehicle 1 is on the rotating mechanism, the rotation position signal light is on, the reverse position signal light is on, and the plug-in pin position signal light is on, allowing the transport vehicle 1 to move forward and prohibiting the transport vehicle 1 from moving backward. When the transport vehicle 1 advances to the working position, the forward position signal light is on, the pin is allowed to be inserted and removed, the transport vehicle 1 is allowed to move backward, and the rotation track is prohibited. When the latch mechanism latches in place, the latch in place signal light comes on, allowing the gap adjustment mechanism to extend / retract, and prohibiting the transport vehicle 1 from moving backward. When the gap adjustment mechanism is extended to the full position, the extended position signal light is on, and it is forbidden to pull out the pin and the transport vehicle 1 is forbidden to move backward. When the gap adjustment mechanism is retracted into position, the retracted signal light comes on, allowing the pin to be pulled out. When the plug-in pin locking mechanism is pulled into place, the pull-in-place signal light is on, allowing the transport vehicle 1 to retreat. When the transport vehicle 1 retreats to the rotating mechanism position, the retreat position signal light comes on, allowing the transport vehicle 1 to move forward and the rotating track. When the transport vehicle 1 is on the rotating mechanism, the slewing position signal light is on, allowing the transport vehicle 1 to move backward.

[0044] The present invention replaces the manual installation of the reverse thrust exhaust volute, automatically runs to the installation area, automatically docks, and automatically returns to the storage area. It does not perform any connection or fixation with the fixed frame of the test bench, and the test results of the test bench will not be affected by the installation of the reverse thrust test equipment. At present, the suspended reverse thrust exhaust volute installation method has been applied on a certain type of engine test bench. The overall size of the equipment is relatively small, reducing the space occupied during daily storage. This method shortens the previous manual installation and disassembly of the reverse thrust exhaust volute on the ground track, which required 4 professional operators to work for 3 hours, to 1 test operator operating in 20 minutes, thereby improving the efficiency of volute installation and reducing the difficulty of installation.

[0045] PLC control system: The PLC control system is used to operate the control buttons on the reverse thrust control box to make the transport trolley, gap adjustment mechanism and latch mechanism perform related actions according to the established running trajectory and requirements, so as to realize the automatic installation and fixation of the reverse thrust volute. First, according to the test bench structure, the installation position and related requirements of the reverse thrust exhaust volute, the action conditions of the transport trolley, gap adjustment mechanism and latch mechanism are pre-set in the PLC control program, including the forward and backward distances of the transport trolley and related in-place indications; then the communication between the PLC and the encoder of the rotary drive component is established, so that the PLC obtains the real-time rotation angle of the rotary drive component; then the position signal detected by the sensor and the running distance of the transport trolley are fed back to the PLC; the PLC judges whether the operating conditions of the trolley, gap adjustment mechanism and latch mechanism are met and the real-time position of the reverse thrust volute through the received position signal, the running distance of the transport trolley and the rotation angle of the rotary drive component; finally, the PLC controls the trolley, gap adjustment mechanism and latch mechanism by operating the control buttons on the reverse thrust control box to realize the automatic installation and fixation of the reverse thrust volute.

[0046] Reverse thrust control box: "Emergency stop" button, when pressed, disconnects the 380V main circuit power supply of all power equipment, and needs to be reset for normal operation. It needs to be pressed when the system is stagnant and not in use; "Power" indicator light, when the emergency stop button is reset, it lights up, indicating that the system power supply is normal; "Control power" button, when pressed, connects the 24V control circuit power supply, and at the same time, the button's own indicator light lights up, indicating that the power supply is normal; "Control box / remote control" switch, the system is divided into platform control box and remote control for operation, through the selection switch to select, the system can only be operated according to the selected position; "Trolley" operation switch, when the trolley mechanism runs in the working direction, it is called "forward", and when it runs in the direction of the platform, it is called "backward". When it runs in place, the corresponding indicator light will light up; "Rotation mechanism" operation switch, when the rotating track mechanism runs in the direction parallel to the heading, it is called "rotation", and when it runs in the direction perpendicular to the heading, it is called "slewing". When it runs in place, the corresponding indicator light will light up; "Latch mechanism" operation switch, when the latch mechanism runs in the direction of the ground, it is called "latch", and when it runs in the direction of the roof, it is called "pulling pin". When the operation is in place, the corresponding indicator light will light up; the "gap adjustment mechanism" operation switch, when the gap adjustment mechanism runs toward the engine, it is called "extending", and when it runs toward the sides of the platform, it is called "retracting. When the operation is in place, the corresponding indicator light will light up. The above mechanism operation switches and position signal lights are divided into two parts on the left and right sides. When the system is operated through the platform control box, it can be operated separately or simultaneously.

[0047] Transport vehicle: The transport vehicle is a self-propelled drive wheel structure. The driving wheel is composed of a reduction motor, wheel, shaft, bearing seat, etc. The driven wheel assembly is composed of a wheel, bearing seat, shaft, etc. The guide wheel assembly is composed of a wheel, bearing, shaft, support, etc. The transport vehicle body is welded by steel sections, and the guide wheel mounting frame is welded by steel sections and steel plates. The travel speed is 0-12m / min (frequency conversion speed regulation); the reduction motor uses a frequency converter to control the speed and frequency conversion braking when stopping, and the brake set on the motor is locked after stopping. The reducer positioning is controlled in place by a laser rangefinder sensor.

[0048] There is a control box on each of the left and right sides of the transport vehicle. The panel of the box has a red "power" indicator light. When it is on, it means that the 380V main circuit power supply of the transport vehicle and the gap adjustment power equipment in the box is normal. There are status signal lights of different colors at the bottom of the box. During the operation of the system, please pay attention to observe at any time. The status functions of the signal lights are as follows: "Red" indicator light, the transport vehicle "advance / reverse" is in place; "Green" indicator light, the gap adjustment mechanism "extend / retract" is in place; "Blue" indicator light, the latch locking mechanism "pin / pull" is in place; "Yellow" indicator light, the rotating mechanism "rotates / revolves" is in place; sound and light indicator light, the light is always on and there is an intermittent sound during the operation of the transport vehicle.

[0049] The support frame includes an outer support frame and an inner support frame.

[0050] External support frame: It is a welded structure, which is welded by square steel pipes. The design structure fully considers the supporting force of the volute, with high strength and stable and reliable structure. The integral welding type can support the internal support frame and volute, which are supported on the upper part of the external support frame steel, which is stable and reliable; the internal support frame and volute guide seat are set, and the electric cylinder mounting seat and support of the gap adjustment device are designed; the sliding track plate is set on the upper part of the supporting steel, which can realize the centering sliding of the internal support frame and volute.

[0051] Internal support frame and reverse thrust exhaust volute: It is a welded structure, which is welded by square steel pipe combination. The design structure fully considers the support force of the reverse thrust exhaust volute, with high strength and stable and reliable structure. It is equipped with a lateral clearance adjustment electric cylinder connection ear; the reverse thrust exhaust volute is welded with 4-5mm steel plate, and its streamline is determined according to aerodynamic simulation calculation to ensure smooth exhaust.

[0052] Rotary drive assembly: The rotary drive assembly consists of a gear reduction motor, a motor mounting seat, a pinion, a rotary encoder, a coupling for the encoder, an encoder mounting seat, a motor protective cover, etc. Slewing bearing speed: ≈1rpm / min-0.2rpm / min (frequency conversion speed regulation); time for a 90° turn: ≈15s-60s (adjustable); track docking accuracy after turning: ±0.1mm; the reduction motor is controlled by a frequency converter to achieve adjustable corner speed.

[0053] Latch mechanism: The latch mechanism consists of an electric cylinder, a locking pin, a sleeve, etc. The locking mechanism is set inside the upper track box beam, the lower part of the track beam, the front part of the outer support frame, and the side part of the outer support frame. The extension and retraction of the electric cylinder rod can realize the locking and unlocking of the transport vehicle and the upper track box beam, the support frame, and the outer frame.

[0054] The clearance adjustment mechanism uses an electric push rod, which is equipped with a displacement sensor, so that it can be matched with the test dimensions of the engine thrust section.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A mounting mechanism for an aircraft engine thrust reverse exhaust volute, characterized in that: The invention comprises a pre-buried steel beam (4), a track assembly, a transport vehicle (1) and a volute (3), wherein the pre-buried steel beam (4) is connected to the track assembly, and two volutes (3) are connected to the track assembly via the transport vehicle (1), and the moving direction of the transport vehicle (1) can be changed by (90) degrees at the track assembly so that the two volutes (3) are aligned.

2. The mounting mechanism of the reverse thrust exhaust volute of an aircraft engine according to claim 1, characterized in that: The embedded steel beams (4) are two steel beams arranged in parallel.

3. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 2, characterized in that: The track assembly comprises two forward tracks (5), two return tracks (6) and two rotating tracks (7); the return track (6) and the rotating track (7) are installed under one embedded steel beam (4); the forward track (5) is installed under another embedded steel beam (4); the two forward tracks (5) are parallel to each other and perpendicular to the return track (6); the two rotating tracks (7) are respectively arranged between the forward track (5) and the return track (6); and the rotating tracks (7) can be connected to the forward track (5) or the return track (6) when rotating.

4. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 3, characterized in that: The two forward rails (5), the two return rails (6) and the two rotating rails (7) are all connected to the embedded steel beam (4) through connecting pieces, and the forward rails (5), the return rails (6) and the rotating rails (7) are all parallel to the embedded steel beam (4).

5. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 4, characterized in that: A track rotating mechanism (8) is provided on the connecting piece of the rotating track (7).

6. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 5, characterized in that: The track rotating mechanism (8) is a rotating reduction motor, the output end of which is connected to the rotating track (7), and the rotating reduction motor is connected to an external PLC control system.

7. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 1, characterized in that: The transport vehicle (1) is a self-propelled driving vehicle. The driving wheels of the transport vehicle (1) are clamped on the track assembly. The transport vehicle (1) is connected to an external PLC control system to control the movement of the transport vehicle (1). A laser rangefinder is provided on the transport vehicle (1) to determine the position of the transport vehicle (1).

8. The mounting mechanism for the thrust reverser exhaust volute of an aircraft engine according to claim 1, characterized in that: The volute (3) is connected to the transport vehicle (1) via a support frame (2); a latch mechanism (9) is provided on the transport vehicle (1) for fixing the transport vehicle (1).

9. The mounting mechanism for the reverse thrust exhaust volute of an aircraft engine according to claim 8, characterized in that: The support frame (2) and the volute (3) are connected via a gap adjustment mechanism (10), and the gap adjustment mechanism (10) is a telescopic rod used to adjust the distance between the two volutes (3).

10. A method for installing an aircraft engine thrust reverse exhaust volute, characterized in that: The installation mechanism of the reverse thrust exhaust volute of an aircraft engine according to any one of claims 1 to 9 comprises the following steps: The volute is initially located at the end of the return track (6), connected to the transport vehicle (1) via a support frame (2), and the position of the transport vehicle (1) is determined by a laser rangefinder; When the rotating track (7) is connected to the return track (6), the transport vehicle moves forward to the rotating track position, the track rotation mechanism (8) is started, and the rotating track (7) is controlled to rotate (90) degrees. When the rotating track (7) is connected to the forward track (5), the rotating track rotates to the position, and the transport vehicle (1) continues to move forward; The transport vehicle (1) continues to move on the forward track (5) to the working position on the engine side, at which point the forward movement of the transport vehicle (1) is completed, and the latch mechanism is locked to fix the position of the transport vehicle (1); Control the clearance adjustment mechanism to work. When it is extended to the full position, the motor stops working and the indicator light comes on. At this point, the installation of the reverse thrust volute is completed.

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