Overhead rail type soundproof door and aero-engine test system

Abstract

The application discloses a hanging rail type soundproof door and an aero-engine test running system, wherein the hanging rail type soundproof door comprises a wall body provided with a door opening, a hanging rail arranged above the door opening, a soundproof door leaf installed on the hanging rail, and a translation mechanism connected with the soundproof door leaf; one side of the wall body facing the soundproof door leaf is provided with a sealing flange, and the top surface of the sealing flange is provided with a first sealing mechanism; the soundproof door leaf comprises a door leaf body and a sealing strip, the first end of the sealing strip is fixedly connected with the door leaf body, and the second end of the sealing strip is inserted into the first sealing mechanism in the vertical direction; the first sealing mechanism is used for clamping the sealing strip after the soundproof door leaf is closed, so as to seal the gap between the soundproof door leaf and the wall body; and the first sealing mechanism is also used for releasing the sealing strip when the soundproof door leaf moves. The hanging rail type soundproof door provided by the application adopts a sliding door structure, can solve the problem of poor sealing effect of a conventional sliding door, and can increase the area of the door opening while ensuring the sound insulation and noise reduction effect.

Description

Technical Field

[0001] This invention relates to the field of aero-engine test technology, and in particular, to a suspended rail type silencing door and an aero-engine test system employing the suspended rail type silencing door. Background Technology

[0002] Currently, in the ground testing of aero engines, it is necessary to transfer the engine from the assembly workshop to the test workshop. To facilitate rapid transfer, the assembly workshop and the test workshop are usually located together. However, since the test workshop generates noise of up to 160dB when conducting high-power turboprop engine tests, in order to avoid the huge noise affecting the assembly operations in the assembly workshop, it is necessary to install a soundproof door between the test workshop and the assembly workshop to achieve the effect of sound insulation and noise reduction.

[0003] Among existing soundproof door technologies, Chinese utility model patent CN222207692U provides a soundproof door with good sealing performance and noise reduction. Its door frame is fixed with hinges, and a sealing strip is installed between the outer frame and the door frame. The outer frame is inlaid with sound-absorbing cotton and has a flat, perforated aluminum panel, achieving good sealing and noise reduction. The outer frame is also conveniently opened and closed through a hinged door rod lock. Secondly, Chinese utility model patent CN221053563U also provides a soundproof door structure with a hydraulic vibratory hammer power station. It uses reinforcing ring rods to support the internal structure of the frame. Fixed connecting plates are arranged in a star-shaped pattern inside the door, providing good support for the internal structure. The fixed connecting plates and reinforcing ring rods are made of high-density, structurally robust aluminum alloy to improve the door's mass and damping effect, reducing the possibility of vibration and resonance. However, existing silencers are mainly single- or double-opening swing mechanical doors with limited door frame size and limited allowable area for equipment entry and exit, making them only suitable for testing low-power turbojet or low-power turboprop engines. Summary of the Invention

[0004] The present invention primarily provides a hanging track type soundproof door to solve the technical problem that existing soundproof doors cannot be adapted to the entry and exit of large-volume equipment.

[0005] The present invention also provides an aircraft engine test system, which adopts the above-mentioned suspended rail type silencer door.

[0006] According to one aspect of the present invention, a hanging rail type soundproof door is provided, including a wall with a door opening, a hanging rail disposed above the door opening, a soundproof door leaf installed on the hanging rail, and a translation mechanism connected to the soundproof door leaf, the translation mechanism being used to drive the soundproof door leaf to slide open and close along the hanging rail;

[0007] The wall has a sealing flange on the side facing the soundproof door leaf. The sealing flange is located above the door opening. The top surface of the sealing flange has a first sealing mechanism. The soundproof door leaf includes a door leaf body and a sealing strip. The first end of the sealing strip is fixedly connected to the door leaf body. The second end of the sealing strip is inserted vertically into the first sealing mechanism. The first sealing mechanism is used to clamp the sealing strip after the soundproof door leaf is closed, thereby sealing the gap between the soundproof door leaf and the wall. The first sealing mechanism is also used to release the sealing strip when the soundproof door leaf moves.

[0008] Preferably, the first sealing mechanism includes two first noise-absorbing air cushions, a return spring pressed between the two first noise-absorbing air cushions, and an electromagnet disposed on the first noise-absorbing air cushions;

[0009] The second end of the sealing strip is vertically inserted between the two first noise-absorbing air pads. The reset spring is used to spring the two first noise-absorbing air pads to a preset distance to release the sealing strip. The electromagnet is used to attract the two first noise-absorbing air pads in the energized state to drive the two first noise-absorbing air pads to clamp the sealing strip.

[0010] Preferably, the first sealing mechanism further includes a mounting base disposed between the two first noise-absorbing air pads, and two limiting components disposed at both ends of the mounting base. Each limiting component includes a limiting block and a transmission rod connected to the limiting block. The end of the transmission rod away from the limiting block passes through a preset limiting hole on the mounting base and connects to the first noise-absorbing air pad. The transmission rods of the two limiting components are connected to the two first noise-absorbing air pads one-to-one. The return spring abuts against the side of the limiting block away from the transmission rod. The limiting block is used to move to the state of abutting against the inner wall of the mounting base under the elastic force of the return spring and limit the maximum movement stroke of the first noise-absorbing air pad.

[0011] Preferably, the first noise-absorbing air cushion is provided with electromagnets on both the upper and lower sides of the return spring.

[0012] Preferably, the suspended track silencing door further includes a second sealing mechanism disposed on the bottom of the silencing door leaf. The second sealing mechanism includes a second silencing air cushion that is slidably connected to the silencing door leaf in a vertical direction, and a lifting component connected to the second silencing air cushion and used to drive the second silencing air cushion to move up and down.

[0013] Preferably, the lifting assembly includes a motor mounted on the wall, a first crank connected to the output shaft of the motor, a second crank rotatably mounted on the soundproof door leaf in the horizontal direction, a screw rotatably mounted inside the soundproof door leaf in the vertical direction, a universal joint disposed between the second crank and the screw and used to transmit the rotational power of the second crank to the screw, and a lifting transmission component connected to the second soundproof air cushion. The lifting transmission component has a threaded hole that is threadedly connected to the screw. The first crank is used to abut against the second crank and transmit the rotational power of the motor to the second crank after the soundproof door leaf is closed.

[0014] Preferably, the wall is provided in two sections, which are spaced apart and enclose a sound-absorbing cavity. Each of the two walls is provided with a door opening and a hanging rail. The sound-absorbing door is provided in two sections, which are correspondingly installed on the hanging rails of the two walls. When closed, the two sound-absorbing door sections simultaneously block the door openings on the two walls and seal the sound-absorbing cavity.

[0015] Preferably, the door panel body includes, in sequence from the outer side to the inner side, a first sound insulation board, a damping layer, a steel frame, sound insulation cotton, a composite sound insulation module, and a second sound insulation board.

[0016] Preferably, the soundproof door panel is provided with an infrared detection component and / or a pressure detection component. The infrared detection component is used to detect whether there is an obstacle in the closing direction of the soundproof door panel through infrared signals. The pressure detection component includes an airbag and a pressure sensor disposed in the airbag. The pressure sensor is used to detect the air pressure change of the airbag to determine whether the airbag has touched an obstacle.

[0017] As a second aspect, the present invention also provides an aircraft engine test system, including an assembly workshop and a test workshop, and the aforementioned suspended rail silencing door, wherein the suspended rail silencing door is disposed between the assembly workshop and the test workshop.

[0018] The present invention has the following beneficial effects:

[0019] The suspended-rail soundproof door provided by this invention adopts a sliding door structure and is driven to open and close by a translation mechanism. This avoids the situation where the soundproof door is too large and heavy to open and close manually, thus meeting the sealing requirements of large door openings and adapting to scenarios where large equipment needs to enter and exit. Furthermore, the suspended-rail design avoids the problem of uneven ground or protrusions hindering the entry and exit of large equipment compared to a ground-rail structure. More importantly, a first sealing mechanism on the wall clamps the sealing strip on the soundproof door after it closes, thereby sealing the gap between the soundproof door and the wall. This effectively solves the problem of poor sealing performance of conventional sliding doors, increasing the door opening area while ensuring sound insulation and noise reduction, and simultaneously meeting the transportation and noise reduction requirements of large aero-engine testing.

[0020] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the hanging rail type soundproof door provided in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the hanging track silencing door at the doorway location.

[0024] Figure 3 for Figure 2 A magnified view of area A in the suspended track silencing door shown;

[0025] Figure 4 for Figure 3 A schematic diagram of the first sealing mechanism in the suspended track silencing door shown;

[0026] Figure 5 for Figure 2 A magnified view of area B in the suspended track silencing door shown;

[0027] Figure 6 for Figure 1 The diagram shows the assembly structure of the door leaf and the hanging rail in a suspended track type soundproof door.

[0028] Figure 7 This is a schematic diagram of the structure of the aircraft engine test system provided in an embodiment of the present invention;

[0029] Figure 8 for Figure 7 The shown is a side view of the aircraft engine test system along the test workshop;

[0030] Figure 9 for Figure 7 A top view of the first-level auxiliary workshop in the aircraft engine test system shown;

[0031] Figure 10 for Figure 7 A top view of the second-level auxiliary workshop in the aircraft engine test system shown;

[0032] Figure 11 for Figure 9 The diagram shows the structure of the piping installation module in the aero-engine test system.

[0033] Figure 12 for Figure 10 The diagram shows the structure of the wiring module in the aero-engine test system.

[0034] Figure 13 This is a schematic diagram of the hoisting device in the aero-engine test system provided in an embodiment of the present invention;

[0035] Figure 14 for Figure 13 The diagram shown illustrates the usage status of the hoisting device, showing the state where the reversing track is offset from the transport track.

[0036] Figure 15 for Figure 14 The diagram shown illustrates the changing states of the hoisting device, showing the alignment of the reversing track with the transport track.

[0037] Figure 16 for Figure 15 The diagram showing the changing states of the hoisting device illustrates the connection status of the transfer track with the transport track.

[0038] Figure 17 for Figure 13 A schematic diagram of the crane in the hoisting device shown.

[0039] Legend:

[0040] 1000. Aircraft engine test system;

[0041] 1. Suspended rail type soundproof door; 11. Wall; 111. Door opening; 112. Sealing flange; 113. Soundproof cavity; 12. Suspended rail; 121. Limiting wheel; 13. Soundproof door leaf; 131. Door leaf body; 132. Sealing strip; 14. First sealing mechanism; 141. First soundproofing air cushion; 142. Return spring; 143. Electromagnet; 144. Mounting base; 145. Limiting component; 1451. Limiting block; 1452. Transmission rod; 15. Second sealing mechanism; 151. Second soundproofing air cushion; 152. Lifting component; 1521. Motor; 1522. First crank; 1523. Second crank; 1524. Screw; 1525. Universal joint; 1526. Lifting transmission component; 1527. Mounting bracket; 16. Pressure detection component; 161. Safety airbag;

[0042] 2. Lifting device; 21. Crane; 211. Lifting assembly; 2111. Drum; 2112. Wire rope; 2113. Pulley; 2114. Hook; 22. Parallel mounting rail; 23. Transfer rail; 24. Pre-installed rail; 25. Transport rail; 251. Notch; 26. Reversing rail;

[0043] 3. Assembly workshop; 4. Testing workshop; 5. Intake silencer tower; 6. Gas exhaust silencer tower; 7. Paddle jet exhaust silencer room;

[0044] 8. Auxiliary workshop; 81. Lubricating oil storage room; 82. Electrical equipment room; 821. Process equipment room; 822. Electrical room; 823. Loading cabinet room; 824. Accessory storage room; 825. Air compressor room; 83. Fuel room; 84. Changing and soundproof room; 841. Changing room; 842. Soundproof room; 85. Control room; 851. Instrument and meter room; 852. Operating room; 86. Data analysis room; 87. Restroom;

[0045] 91. Pipeline installation module; 911. Fixing plate; 912. Pipeline channel; 913. Noise-absorbing material; 92. Wiring module; 921. Sealing plate; 922. Wiring hole. Detailed Implementation

[0046] The embodiments of the present invention will be 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. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0047] Those skilled in the art will understand that, unless specifically stated otherwise, the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof. It should be understood that when we say a component is "connected" to another component, it can be directly connected to the other component or connected via an intermediate component. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items. The terms "first" and "second," etc., in this specification and claims are used to distinguish different objects, not to describe a particular order.

[0048] Figures 1 to 6 The invention also illustrates a suspended rail-type soundproof door provided in an embodiment of the present invention. Through structural optimization, it can achieve a large opening and closing area and has a good soundproofing effect, meeting the soundproofing requirements for the entry and exit of large equipment and testing. It can be applied to the aero-engine test system to achieve sound insulation and noise reduction between the assembly workshop and the test workshop.

[0049] Please combine Figure 1 and Figure 2 The suspended track type soundproof door 1 includes a wall 11, a suspended track 12, a soundproof door leaf 13, and a sliding mechanism (not shown in the figure, the same below). The wall 11 has a door opening 111 adapted to the soundproof door leaf 13. The suspended track 12 is installed on the wall 11. The suspended track 12 is located above the door opening 111 and extends horizontally to one side of the door opening 111. The soundproof door leaf 13 is slidably installed on the suspended track 12. The sliding mechanism is connected to the soundproof door leaf 13 and is used to drive the soundproof door leaf 13 to slide open and close along the suspended track 12. Furthermore, the translation mechanism may specifically include a translation motor mounted on the wall 11 and a drive wheel connected to the output shaft of the translation motor. The drive wheel abuts against the soundproof door panel 13, so that the translation motor drives the rolling motion of the drive wheel to drive the soundproof door panel 13 to translate. In other embodiments, the drive wheel may be a gear, and a rack that meshes with the gear may be provided on the soundproof door panel 13. The translation motor drives the gear to rotate so as to drive the rack to translate, thereby achieving a higher precision translation drive action.

[0050] like Figure 3As shown, the wall 11 has a sealing flange 112 on the side facing the soundproof door 13. The sealing flange 112 is located above the door opening 111 and extends towards the soundproof door 13. The top surface of the sealing flange 112 has a first sealing mechanism 14. The soundproof door 13 includes a door body 131 and a sealing strip 132. The first end of the sealing strip 132 is fixedly connected to the door body 131 in a horizontal direction, and the second end of the sealing strip 132 is inserted vertically into the door body 131. Within the first sealing mechanism 14, the middle section of the sealing strip 132 is configured as an arc-shaped structure or a right-angle structure so that its first end and second end are arranged in different directions. The first sealing mechanism 14 is used to clamp the sealing strip 132 after the soundproof door 13 is closed, thereby sealing the gap between the soundproof door 13 and the wall 11. The first sealing mechanism 14 is also used to release the sealing strip 132 when the soundproof door 13 moves, so as to avoid affecting the opening and closing action of the soundproof door 13.

[0051] Specifically, the suspended track silencing door 1 adopts a sliding door structure and is driven to open and close by the translation mechanism. This avoids the situation where the silencing door is too large and heavy to open and close manually, thus meeting the sealing requirements of large door openings and adapting to scenarios where large equipment needs to enter and exit. Furthermore, the suspended track design avoids the problem of uneven ground or protrusions hindering the entry and exit of large equipment compared to a ground track structure. More importantly, a first sealing mechanism 14 is provided on the wall 11, which clamps the sealing strip 132 on the silencing door leaf 13 after it is closed, thereby sealing the gap between the silencing door leaf 13 and the wall 11. This effectively solves the problem of poor sealing performance of conventional sliding doors, increasing the area of ​​the door opening 111 while ensuring sound insulation and noise reduction, and simultaneously meeting the transportation and noise reduction requirements of large aero-engine testing.

[0052] Please combine Figure 4 The first sealing mechanism 14 includes two first silencing air pads 141, a return spring 142 pressed between the two first silencing air pads 141, and an electromagnet 143 disposed on the first silencing air pads 141. Specifically, the two first silencing air pads 141 are disposed on opposite sides of the second end of the sealing strip 132, that is, the second end of the sealing strip 132 is inserted vertically between the two first silencing air pads 141. The return spring 142 is used to spring the two first silencing air pads 141 to a preset distance to release the sealing strip 132. The electromagnet 143 is used to attract the two first silencing air pads 141 in an energized state to drive the two first silencing air pads 141 to clamp the sealing strip 132.

[0053] The working principle of the first sealing mechanism 14 is as follows: When the electromagnet 143 is de-energized, it has no magnetic force. At this time, the elastic force of the return spring 142 can push the two first sound-absorbing air pads 141 to a preset distance, thereby causing the first sound-absorbing air pads 141 to detach from the sealing strip 132, allowing the soundproof door 13 to open and close smoothly. When the electromagnet 143 is energized, the magnetic force generated by the electromagnet 143 can overcome the elastic force of the return spring 142 and attract the two first sound-absorbing air pads 141 together. Thus, the two first sound-absorbing air pads 141 clamp the sealing strip 132, achieving efficient sealing of the gap between the soundproof door 13 and the wall 11. The sealing structure is simple and efficient. Furthermore, the air pad structure ensures that the first sound-absorbing air pads 141 are tightly attached to the sealing strip 132. It can also utilize the air cavity inside the first sound-absorbing air pads 141 for sound absorption, effectively improving the sound absorption effect.

[0054] Preferably, the first sealing mechanism 14 further includes a mounting base 144 disposed between the two first noise-absorbing air pads 141, and two limiting components 145 disposed at both ends of the mounting base 144. Each limiting component 145 includes a limiting block 1451 and a transmission rod 1452 connected to the limiting block 1451. One end of the transmission rod 1452 away from the limiting block 1451 passes through a preset limiting hole on the mounting base 144 and connects to the first noise-absorbing air pad 141. The transmission rods 1452 of the two limiting components 145 are connected to the two first noise-absorbing air pads 141 in a one-to-one correspondence. The return spring 142 abuts against the side of the limiting block 1451 away from the transmission rod 1452. The limiting block 1451 is used to move to the state of abutting against the inner wall of the mounting base 144 under the elastic force of the return spring 142 and limit the maximum movement stroke of the first noise-absorbing air pad 141.

[0055] The limiting component 145 limits the maximum travel of the first noise-absorbing air pad 141 through the cooperation of the limiting block 1451 and the mounting base 144, preventing the first noise-absorbing air pad 141 from loosening. It can also guide the movement direction of the first noise-absorbing air pad 141 by the cooperation of the limiting block 1451 and the preset limiting hole on the mounting base 144, effectively improving the stability of the first noise-absorbing air pad 141 and preventing the first noise-absorbing air pad 141 from deflecting and affecting the clamping and sealing effect.

[0056] Preferably, the first noise-absorbing air cushion 141 is provided with electromagnets 143 on both the upper and lower sides of the return spring 142, so that the first noise-absorbing air cushion 141 is attracted simultaneously by the electromagnets 143 on both sides, ensuring that the first noise-absorbing air cushion 141 is subjected to uniform force and can achieve stable translational operation. In this embodiment, electromagnets 143 are provided at corresponding positions on both first noise-absorbing air cushions 141 to improve the magnetic attraction effect and ensure sealing strength; in other embodiments, the electromagnet 143 may be provided on only one of the first noise-absorbing air cushions 141, and a metal part for the electromagnet 143 to be attracted is provided on the other first noise-absorbing air cushion 141, which can also control the attraction of both first noise-absorbing air cushions 141 by the electromagnet 143.

[0057] like Figure 5 As shown, the suspended track type soundproof door 1 also includes a second sealing mechanism 15 disposed on the bottom of the soundproof door leaf 13. The second sealing mechanism 15 includes a second soundproof air cushion 151 and a lifting assembly 152. The second soundproof air cushion 151 is slidably connected to the bottom of the soundproof door leaf 13 in a vertical direction. The lifting assembly 152 is connected to the second soundproof air cushion 151 and is used to drive the second soundproof air cushion 151 to move up and down, thereby controlling the second soundproof air cushion 151 to move up and down to a state of touching the ground or leaving the ground.

[0058] Specifically, after the soundproof door 13 is closed, the second soundproof air cushion 151 can be driven to descend and move to a state of contact with the ground by the lifting assembly 152, thereby sealing the bottom gap of the soundproof door 13. The sealing by the air cushion structure can ensure that the second soundproof air cushion 151 is in close contact with the ground, and can also use the air cavity in the second soundproof air cushion 151 to reduce noise, effectively improving the noise reduction effect at the bottom position, thereby further improving the sound insulation and noise reduction effect of the hanging track soundproof door 1.

[0059] Preferably, the lifting assembly 152 includes a motor 1521 mounted on the wall 11, a first crank 1522 connected to the output shaft of the motor 1521, a second crank 1523 rotatably mounted on the soundproof door 13 in the horizontal direction, a screw 1524 rotatably mounted inside the soundproof door 13 in the vertical direction, a universal joint 1525 located between the second crank 1523 and the screw 1524 and used to transmit the rotational power of the second crank 1523 to the screw 1524, and a lifting transmission component 1526 connected to the second soundproof air cushion 151. The lifting transmission component 1526 has a threaded hole that is threadedly connected to the screw 1524. The first crank 1522 is used to abut against the second crank 1523 and transmit the rotational power of the motor 1521 to the second crank 1523 after the soundproof door 13 is closed.

[0060] Specifically, both the first crank 1522 and the second crank 1523 are provided with overlapping portions at a preset angle. When the soundproof door 13 is in the open state, the second crank 1523 moves with the soundproof door 13 to a state where it is disengaged from the first crank 1522. When the soundproof door 13 is in the closed state, the second crank 1523 moves with the soundproof door 13 to the working position of the first crank 1522. At this time, the motor 1521 drives the first crank 1522 to rotate, which causes the overlapping portion on the first crank 1522 to rotate to the state where it overlaps the second crank 1523 and drives the second crank 1523 to rotate. Thus, the second crank 1523 and the universal joint 1525 cooperate to realize the reversing transmission and drive the screw 1524 to rotate. Then, the screw engagement drives the lifting transmission component 1526 to move up and down, and the lifting transmission component 1526 drives the second soundproof air cushion 151 to move up and down. Since the motor 1521 is detached from the soundproof door 13, the load on the soundproof door 13 can be reduced, the number of openings on the soundproof door 13 can be reduced, and the smooth movement and soundproofing effect of the soundproof door 13 can be ensured.

[0061] Furthermore, two second sound-absorbing air pads 151 are provided, and the two second sound-absorbing air pads 151 are respectively disposed on opposite sides of the sound-absorbing door leaf 13. The two ends of the lifting transmission member 1526 pass through opposite sides of the sound-absorbing door leaf 13 and are respectively connected to the two second sound-absorbing air pads 151 one by one. The second sound-absorbing air pads 151 extend upward to cover the through holes of the lifting transmission member 1526 on the sound-absorbing door leaf 13. The lifting transmission member 1526 synchronously drives the two second sound-absorbing air pads 151 to move up and down, so that the two second sound-absorbing air pads 151 can jointly clamp the sound-absorbing door leaf 13 to achieve a double-layer sealing effect. The second sound-absorbing air pads 151 can also cover the openings on the sound-absorbing door leaf 13 to ensure the sound-absorbing effect.

[0062] Furthermore, the lifting assembly 152 also includes a mounting bracket 1527 disposed in the inner cavity of the soundproof door leaf 13. The mounting bracket 1527 is mounted above the screw 1524, and the screw 1524 is rotatably mounted on the mounting bracket 1527. The mounting bracket 1527 limits the installation of the screw 1524, thereby improving the stability of the screw 1524.

[0063] Please combine Figure 1 and Figure 6The wall 11 consists of two sections, spaced apart and enclosing a sound-absorbing cavity 113. Each wall 11 has a doorway 111 and a hanging rail 12. Two sound-absorbing door panels 13 are correspondingly mounted on the hanging rails 12 of the two walls 11. When closed, the two door panels 13 simultaneously seal the doorways 111 on both walls and the sound-absorbing cavity. The hanging rail type sound-absorbing door 1, formed by the two spaced-apart walls 11, creates a cavity structure. When both door panels 13 are closed simultaneously, the sound-absorbing cavity 113 is completely sealed, effectively improving the sound absorption effect. Testing has shown that it can reduce the noise level from 160dB in the test workshop of an aero-engine test system to 70dB.

[0064] Preferably, the door body 131 includes, in sequence from the outer side to the inner side, a first sound insulation board, a damping layer, a steel frame, sound insulation cotton, a composite sound insulation module, and a second sound insulation board. By sequentially setting multiple layers of sound insulation structure, noise can be significantly reduced. Furthermore, by supporting the multiple layers of sound insulation structure through the steel frame, the structural strength of the door body 131 can be ensured, and deformation that would affect the sealing effect can be avoided.

[0065] Preferably, the soundproof door panel 13 is provided with an infrared detection component (not shown in the figure, the same below) and / or a pressure detection component 16. The infrared detection component includes an infrared sensor, which is used to detect whether there is an obstacle in the closing direction of the soundproof door panel 13 through infrared signals. The pressure detection component 16 includes an airbag 161 and a pressure sensor disposed in the airbag 161. The airbag 161 is disposed on the side wall of the soundproof door panel 13. The pressure sensor is used to detect the air pressure change of the airbag 161 to determine whether the airbag 161 has touched an obstacle.

[0066] In this embodiment, the soundproof door 13 is equipped with both the infrared detection component and the pressure detection component 16. By using dual anti-collision detection, it can determine whether there are obstacles in the closing direction of the soundproof door 13, thereby effectively improving safety.

[0067] Furthermore, the hanging rail 12 is provided with a limiting wheel 121, which is used to abut against the soundproof door leaf 13 and limit the opening and closing movement of the soundproof door leaf 13 to ensure the high-precision opening and closing of the soundproof door leaf 13.

[0068] like Figure 7As shown, as a second aspect, the present invention also provides an aero-engine test system 1000, including an assembly workshop 3 and a test workshop 4, and the aforementioned suspended rail-type silencing door 1, which is disposed between the assembly workshop 3 and the test workshop 4. The suspended rail-type silencing door 1 achieves sound insulation and noise reduction between the assembly workshop 3 and the test workshop 4, simultaneously meeting the transportation requirements and noise reduction requirements for large aero-engine testing.

[0069] Please combine Figure 7 and Figure 8 The aero-engine test system 1000 further includes an intake muffler 5, a gas exhaust muffler 6, and a propeller exhaust muffler 7. The test workshop 4 is used to test the aero-engine. The intake muffler 5 is located at the front end of the test workshop 4 along the airflow direction of the aero-engine. The gas exhaust muffler 6 and the propeller exhaust muffler 7 are located sequentially at the rear end of the test workshop 4 along the airflow direction of the aero-engine.

[0070] Furthermore, the intake muffler 5 extends vertically upward and its intake end is vertically downward. The exhaust muffler 6 is located between the test workshop 4 and the propeller exhaust muffler 7. The exhaust muffler 6 extends vertically upward and its exhaust end is vertically upward. The exhaust end of the propeller exhaust muffler 7 extends horizontally along the length of the test workshop 4. The intake muffler 5 is used to introduce air into the test workshop 4. The exhaust muffler 6 is used to discharge the exhaust gas generated by the aircraft engine in the test workshop 4. The propeller exhaust muffler 7 is used to discharge the propeller exhaust gas generated by the aircraft engine in the test workshop 4. The intake muffler 5, the exhaust muffler 6, and the propeller exhaust muffler 7 are all equipped with multi-stage silencing structures and rectification structures.

[0071] In the aforementioned aero-engine test system 1000, the intake end of the air intake muffler tower 5 intakes air vertically downwards, the exhaust end of the gas exhaust muffler tower 6 exhausts air vertically upwards, and the exhaust end of the propeller exhaust muffler 7 exhausts air horizontally. This achieves a vertical intake and horizontal exhaust structure, meeting the intake and exhaust requirements of the aero-engine while providing a more rational and compact overall layout, occupying less space, adapting to different sites, and offering greater applicability. Furthermore, since the gas exhaust muffler tower 6 and the propeller exhaust muffler 7 are independently set up, they can better exhaust the gas, effectively avoiding gas backflow problems during the test, thus improving test safety and test results. Secondly, since the air intake muffler tower 5, the gas exhaust muffler tower 6, and the propeller exhaust muffler 7 are all equipped with multi-stage silencing and rectification structures, they can achieve graded silencing and rectification, resulting in better exhaust performance and preventing test noise from spreading outwards, ensuring test safety.

[0072] like Figure 7 As shown, the aero-engine test system 1000 also includes an auxiliary workshop 8. The assembly workshop 3 and the auxiliary workshop 8 are arranged in a straight line and located on one side of the test workshop 4. The assembly workshop 3 is used to assemble the aero-engine and is located at the air intake end of the test workshop 4. The auxiliary workshop 8 is located at the exhaust end of the test workshop 4. The auxiliary workshop 8 has two layers along the height direction. The first layer of the auxiliary workshop includes a lubricating oil storage room 81, an electrical equipment room 82, and a fuel room 83 arranged sequentially in the direction away from the assembly workshop 3. The second layer of the auxiliary workshop includes a changing and soundproof room 84, a control room 85, and a data analysis room 86 arranged sequentially in the direction away from the assembly workshop 3. The control room 85 is located directly above the electrical equipment room 82 and is used to control the electrical equipment in the electrical equipment room 82.

[0073] Specifically, the lubricating oil storage room 81 is used to store lubricating oil, and the fuel oil storage room 83 is used to store fuel oil. Placing the lubricating oil storage room 81 near the engine installation position of the test workshop 4 is beneficial for subsequent lubricating oil filling and preparation of various test equipment and pipeline connection. Placing the fuel oil storage room 83 away from the engine installation position of the test workshop 4 can improve safety and avoid direct contact between fuel oil and high temperature. Secondly, since the auxiliary workshop 8 has two floors along the vertical direction, the changing room 84, the control room 85, and the data analysis room 86, which do not require large equipment, are sequentially located on the second floor. This not only makes efficient use of vertical space and makes the overall layout more reasonable and compact, but also facilitates the pipeline connection and installation between the control room 85 and the electrical equipment room 82. This allows the control room 85 to quickly control the electrical equipment in the electrical equipment room 82. Furthermore, the changing room 84 provides sound insulation and noise reduction for the control room 85 and the data analysis room 86, making it convenient for people to change clothes and enter and exit the control room 85 and the data analysis room 86, while effectively reducing the noise impact of the testing process of the test workshop 4 on the control room 85 and the data analysis room 86.

[0074] Preferably, the electrical equipment room 82 includes a process equipment room 821, an electrical room 822, and a loading cabinet room 823 arranged sequentially in a direction away from the assembly workshop 3. The process equipment room 821 is used to house the oil supply station, air system, and circulating cooling water system. The oil station specifically includes a lifting platform oil station, a hydraulic loading oil station, and an oil seal oil station. Since the process equipment room 821 is located relatively close to the test workshop 4, it facilitates the connection of the oil station, air system, and circulating cooling water system with the test workshop 4. Secondly, the electrical room 822 is used to house electrical control cabinets and power supply cabinets, and the loading cabinet room 823 is used to house electrical loading cabinets. Setting up the loading cabinets independently reduces the impact of their heat dissipation operations on other electrical equipment. The adjacent arrangement of the electrical room 822 and the loading cabinet room 823 facilitates unified management.

[0075] Furthermore, the electrical equipment room 82 also includes an accessory storage room 824 and an air compressor room 825, which are arranged sequentially at the rear end of the loading cabinet room 823 in a direction away from the assembly workshop 3. The accessory storage room 824 is used to store accessories, and the air compressor room 825 is used to house air compressors. By separating different equipment through multiple workshops, mutual interference can be avoided.

[0076] Furthermore, the changing room 84 includes a changing room 841 and a soundproof room 842 arranged sequentially in a direction away from the assembly workshop 3, thereby achieving double soundproofing of the control room 85 through the changing room 841 and the soundproof room 842.

[0077] Furthermore, the control room 85 includes an instrument room 851 and an operating room 852 arranged sequentially in a direction away from the assembly workshop 3. The instrument room 851 is used to house instruments, and the operating room 852 is used to operate the instruments. Separating the instrument room 851 and the operating room 852 avoids the operating room 852 from being too cluttered, and also allows for further noise reduction of the operating room 852 through the instrument room 851.

[0078] Furthermore, a restroom 87 is provided on the side of the data analysis room 86 away from the control room 85, to facilitate the testing personnel in the control room 85 and the data analysis room 86.

[0079] Please combine Figure 9 and Figure 11A pipe installation module 91 is provided on the wall between the electrical equipment room 82 and the test workshop 4. The pipe installation module 91 includes two fixing plates 911 for attaching to opposite sides of the wall, multiple pipe channels 912 located between the two fixing plates 911, and sound-absorbing material 913 filling the outer periphery of the pipe channels 912. The pipe channels 912 have connection ports on the fixing plates 911 for connecting to equipment pipes. At least some of the pipe channels 912 have different diameters to accommodate different pipe installations. Connecting to equipment pipes through the pipe channels 912 facilitates the transportation of substances such as lubricating oil, fuel oil, hydraulic oil, and coolant, while also achieving a good noise reduction effect, preventing noise in the test workshop 4 from propagating outward along the pipe installation location.

[0080] Please combine Figure 10 and Figure 12 A wiring module 92 is installed on the wall between the control room 85 and the test workshop 4. The wiring module 92 includes a sealing plate 921 embedded in the wall, multiple wiring holes 922 arranged on the sealing plate 921, and sealing plugs that can be detachably sealed to the wiring holes 922. At least some of the wiring holes 922 have different diameters. The wiring personnel can remove the sealing plugs at the corresponding positions as needed, and then pass the cables in the test workshop 4 through the corresponding wiring holes 922 to the control room 85. This structure not only ensures the airtightness of the test workshop 4, but also reduces the physical vibration of the cables during transmission, and ensures a constant temperature and humidity environment in the control room 85, thereby increasing the accuracy and precision of data transmission.

[0081] Preferably, both the control room 85 and the data analysis room 86 are equipped with a constant temperature and humidity system (not shown in the figure, the same below) for adjusting temperature and humidity. The temperature and humidity of the control room 85 and the data analysis room 86 are adjusted by the constant temperature and humidity system to ensure that the relevant instruments and meters are kept in a suitable working environment and to avoid being affected by the high temperature of the test workshop 4.

[0082] Please combine Figures 13 to 17 The aero-engine test system 1000 also includes a hoisting device 2, which is used to realize the rapid transfer of aero-engines between the pre-assembly station in the assembly workshop 3 and the test station in the test workshop 4, and can realize the parallel operation of multiple pre-assembly stations, effectively improving the transfer efficiency and test efficiency of aero-engines, reducing manual operation, and improving safety.

[0083] Please combine Figure 13 and Figure 14The hoisting device 2 includes a crane 21, two parallel mounting tracks 22 for installation on the roof of the assembly workshop 3, a transfer track 23 spanning between the two parallel mounting tracks 22, and a pre-assembly track 24 and a transport track 25 located on the side of the parallel mounting tracks 22 away from the other parallel mounting track 22. The pre-assembly track 24 is positioned above the pre-assembly station, and the transport track 25 extends to the roof of the test workshop 4. The transfer track 23 is equipped with a moving mechanism (not shown in the figure, the same below), which drives the transfer track 23 to move along the length of the parallel mounting tracks 22 to engage with the pre-assembly track 24 or the transport track 25. The crane 21 is used to hoist the aircraft engine on the pre-assembly station and drive the aircraft engine to move along the pre-assembly track 24, the transfer track 23, and the transport track 25.

[0084] Specifically, the hoisting device 2 is equipped with the transfer track 23 across two parallel tracks 22. A pre-installation track 24 and a transport track 25 are provided on the outer side of the parallel tracks 22 (the side away from the transfer track 23). This ensures the stable installation of the transfer track 23 while allowing it to move with high precision along the parallel tracks 22 to engage with any pre-installation track 24 or the transport track 25. This enables the crane 21 to move into different pre-installation tracks 24 to hoist the corresponding pre-installed components. The aero-engines at the workstations can also be moved from different pre-assembly tracks 24 to the transfer track 23 and then along the transfer track 23 to the transport track 25. This facilitates the crane 21 to directly lift the aero-engines from different pre-assembly workstations in the assembly workshop 3 to the test workstations in the test workshop 4, reducing the use of transfer vehicles and thus reducing the clamping and positioning processes between the transfer vehicles and the pre-assembly workstations, as well as between the transfer vehicles and the crane. Only one lifting operation is needed to directly transfer the aero-engines from the pre-assembly workstations to the test workstations, achieving rapid transfer and transportation. Secondly, by setting multiple pre-assembly tracks 24 on the outside of the parallel assembly track 22, multiple pre-assembly workstations can be operated in parallel, enabling the simultaneous assembly and lifting preparation of multiple aero-engines, effectively improving transportation efficiency and facilitating batch testing of multiple aero-engines.

[0085] Furthermore, the moving mechanism includes first rollers disposed at both ends of the transfer track 23 and a first moving motor connected to the first rollers and used to drive the first rollers to roll. The first rollers are embedded in the first roller grooves of the parallel track 22. By driving the first rollers to roll along the first roller grooves through the first moving motor, the transfer track 23 can be moved along the parallel track 22.

[0086] Please combine Figure 14 and Figure 15The transport track 25 has a gap 251 at the location of the suspended silencing door 1 between the assembly workshop 3 and the testing workshop 4. The hoisting device 2 also includes a deflecting track 26 rotatably disposed at the gap 251. The deflecting track 26 is used to rotate to align with the transport track 25 to fill the gap 251. Figure 15 As shown in the diagram, the deflecting track 26 is also used to rotate to a state offset from the transport track 25 to create clearance space at the gap 251 for the closing of the hanging-rail silencer 1 (in Figure 14 (As shown in the image).

[0087] Specifically, the reversing track 26 is rotatably arranged along the horizontal plane. The reversing track 26 is equipped with a reversing motor (not shown in the figure, the same below) for driving the reversing track 26 to rotate. When the reversing track 26 is driven to rotate to align with the transport track 25 by the reversing motor, it can fill the gap 251, allowing the crane 21 to move along the transport track 25 between the assembly workshop 3 and the test workshop 4. When testing is carried out in the test workshop 4, the reversing track 26 can be driven to rotate to a state that is offset from the transport track 25 by the reversing motor. This can create a clearance space at the gap 251 for the hanging rail type silencer door 1 to close, so that the hanging rail type silencer door 1 can close smoothly and seal the test workshop 4, which is beneficial to achieving the noise reduction effect of the test workshop 4.

[0088] Preferably, each of the two parallel mounting tracks 22 is equipped with a transport track 25, which extends to different test workshops 4. That is, the hoisting device 2 can flexibly transfer multiple pre-installed aero engines to different test workshops 4, enabling parallel operation of at least two test workshops 4 and further improving testing efficiency.

[0089] like Figure 16 As shown, the transport tracks 25 on the two parallel tracks 22 are arranged opposite each other, and the two ends of the transfer track 23 are used to simultaneously connect with the transport tracks 25 on the two parallel tracks 22. Since the transport tracks 25 on the two parallel tracks 22 are arranged opposite each other, only one positioning position is needed to allow the transfer track 23 to simultaneously connect with the two transport tracks 25, thereby reducing the docking positioning structure on the transfer track 23, simplifying the hoisting device 2, and making the overall structure simpler and more efficient.

[0090] Preferably, multiple pre-assembly rails 24 are spaced apart along the length of each of the two parallel mounting rails 22, and these pre-assembly rails 24 are positioned one-to-one above multiple pre-assembly stations. By setting multiple pre-assembly rails 24 on each of the two parallel mounting rails 22, it is convenient to set up more pre-assembly stations and meet the transfer needs of more pre-assembly stations. It should be understood that each pre-assembly station can be used to assemble an aircraft engine alone, or different assembly processes of the aircraft engine can be performed through multiple pre-assembly stations. The hoisting device 2 enables the crane 21 to move flexibly between multiple pre-assembly stations, meeting different usage requirements and demonstrating strong applicability.

[0091] like Figure 14 As shown, the pre-installed rails 24 on the two parallel tracks 22 are arranged in a one-to-one correspondence, and the two ends of the adapter rail 23 are used to simultaneously connect with the pre-installed rails 24 on the two parallel tracks 22. Similarly, since the pre-installed rails 24 on the two parallel tracks 22 are arranged facing each other, only one positioning position is needed to allow the adapter rail 23 to simultaneously connect with the two pre-installed rails 24, thereby reducing the docking positioning structure on the adapter rail 23, simplifying the hoisting device 2, and making the overall structure simpler and more efficient.

[0092] Preferably, the end of the transfer track 23 is provided with a locking mechanism (not shown in the figure, the same below). The locking mechanism is used to lock the transfer track 23 relative to the pre-installed track 24 or to lock the transfer track 23 relative to the transport track 25. The locking mechanism achieves the positioning and fixation of the transfer track 23, ensuring that the transfer track 23 stably connects to the pre-installed track 24 or the transport track 25, thereby enabling the crane 21 to move smoothly between the transfer track 23 and the pre-installed track 24 or between the transfer track 23 and the transport track 25.

[0093] Furthermore, the rail locking mechanism includes a telescopic component and a rail locking pin connected to the telescopic component. The telescopic component may specifically be a pneumatic rod or a hydraulic rod, or include a motor and a linear transmission component connected to the output shaft of the motor. The telescopic component is connected to the rail locking pin and is used to drive the rail locking pin to telescopically move, thereby causing the rail locking pin to extend and insert into a preset positioning hole on the pre-installed rail 24 or the transport rail 25, thereby locking and fixing the transfer rail 23.

[0094] like Figure 17As shown, the crane 21 includes two lifting assemblies 211 arranged side by side. Each lifting assembly 211 includes a drum 2111, a wire rope 2112, a pulley 2113, and a hook 2114 connected in sequence. There are two wire ropes 2112, which are spaced apart along the axial direction of the pulley 2113 and are both wound around the outer circumference of the pulley 2113. The drum 2111 is connected to the wire rope 2112 and is used to drive the wire rope 2112 to wind up or unwind, thereby driving the pulley 2113 and the hook 2114 to move up and down.

[0095] Since the lifting assembly 211 includes two steel wire ropes 2112 spaced apart along the axial direction of the pulley 2113, and the steel wire ropes 2112 are wound around the outer circumference of the pulley 2113, so that the two ends of the steel wire ropes 2112 are respectively located on opposite sides of the pulley 2113, the two steel wire ropes 2112 together form four traction points. The steel wire ropes 2112 are arranged around the hook 2114, which effectively ensures the stability of the hook 2114 in three dimensions and can prevent the hook 2114 from tilting in any direction. Compared with conventional hook structures, it can effectively ensure the stable transportation of the lifted items and prevent swaying during the lifting process. Secondly, since the crane 21 includes two lifting components 211 arranged side by side, the aircraft engine is lifted on opposite sides by hooks 2114 on the two lifting components 211 respectively. Thus, the position of the aircraft engine can be flexibly adjusted by individually controlling the lifting height of any one hook 2114, ensuring that the aircraft engine is in a horizontal state during lifting, and further improving the lifting stability.

[0096] Preferably, the cross-sections of the pre-installed track 24, the transfer track 23, and the transport track 25 are all designed as "I"-shaped structures. The drum 2111 is provided with a double hook drive assembly, which is used to engage the opposite sides of the "I"-shaped structure and to move along the pre-installed track 24, the transfer track 23, and the transport track 25.

[0097] Specifically, the pre-installed track 24, the transfer track 23, and the transport track 25 are all made of I-beams, which have a simple and efficient structure. The double hook drive assembly includes two oppositely arranged inverted "L" shaped hooks. By engaging the two inverted "L" shaped hooks with the limiting sides of the I-beams respectively, the crane 21 can be multi-directionally limited, thus improving stability.

[0098] Furthermore, the bottom of the inverted "L"-shaped hook is provided with a second roller and a second moving motor connected to the second roller. The second roller abuts against the upper surface of the flange of the I-beam. By driving the second roller to roll along the I-beam through the second moving motor, the crane 21 can be moved along the pre-installed track 24, the transfer track 23 and the transport track 25.

[0099] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hanging-track type soundproof door, comprising a wall with a door opening, a hanging track above the door opening, a soundproof door leaf installed on the hanging track, and a translation mechanism connected to the soundproof door leaf, the translation mechanism being used to drive the soundproof door leaf to slide open and close along the hanging track, characterized in that: The wall has a sealing flange on the side facing the soundproof door leaf. The sealing flange is located above the door opening. The top surface of the sealing flange has a first sealing mechanism. The soundproof door leaf includes a door leaf body and a sealing strip. The first end of the sealing strip is fixedly connected to the door leaf body. The second end of the sealing strip is inserted vertically into the first sealing mechanism. The first sealing mechanism is used to clamp the sealing strip after the soundproof door leaf is closed, thereby sealing the gap between the soundproof door leaf and the wall. The first sealing mechanism is also used to release the sealing strip when the soundproof door leaf moves. The first sealing mechanism includes two first noise-absorbing air cushions, a return spring that is pressed between the two first noise-absorbing air cushions, and an electromagnet disposed on the first noise-absorbing air cushions. Each of the first noise-absorbing air cushions has an electromagnet at both ends. The second end of the sealing strip is vertically inserted between the two first noise-absorbing air pads. The reset spring is used to spring the two first noise-absorbing air pads to a preset distance to release the sealing strip. The electromagnet is used to attract the two first noise-absorbing air pads in the energized state to drive the two first noise-absorbing air pads to clamp the sealing strip. The first sealing mechanism further includes a mounting base disposed between the two first noise-absorbing air pads, and two limiting components disposed at both ends of the mounting base. Each limiting component includes a limiting block and a transmission rod connected to the limiting block. The end of the transmission rod away from the limiting block passes through a preset limiting hole on the mounting base and is connected to the first noise-absorbing air pad. The transmission rods of the two limiting components are connected to the two first noise-absorbing air pads one-to-one. The return spring abuts against the side of the limiting block away from the transmission rod. The limiting block is used to move to the state of abutting against the inner wall of the mounting base under the elastic force of the return spring and limit the maximum movement stroke of the first noise-absorbing air pad. The transmission rod is connected to the middle of the first noise-absorbing air pad. The suspended track type soundproof door also includes a second sealing mechanism disposed on the bottom of the soundproof door leaf. The second sealing mechanism includes a second soundproof air cushion that is slidably connected to the soundproof door leaf in a vertical direction, and a lifting component that is connected to the second soundproof air cushion and is used to drive the second soundproof air cushion to move up and down. The lifting assembly includes a motor mounted on the wall, a first crank connected to the output shaft of the motor, a second crank rotatably mounted on the soundproof door leaf in the horizontal direction, a screw rotatably mounted inside the soundproof door leaf in the vertical direction, a universal joint located between the second crank and the screw and used to transmit the rotational power of the second crank to the screw, and a lifting transmission component connected to the second soundproof air cushion. The lifting transmission component has a threaded hole that is threadedly connected to the screw. The first crank is used to abut against the second crank and transmit the rotational power of the motor to the second crank after the soundproof door leaf is closed.

2. The hanging track type soundproof door according to claim 1, characterized in that, The first noise-absorbing air cushion is equipped with electromagnets on both the upper and lower sides of the reset spring.

3. The hanging track type soundproof door according to claim 1, characterized in that, The wall is provided in two sections, which are spaced apart and enclose a sound-absorbing cavity. Both walls are provided with door openings and hanging rails. There are two sound-absorbing door panels, which are correspondingly installed on the hanging rails of the two walls. When closed, the two sound-absorbing door panels simultaneously block the door openings on the two walls and seal the sound-absorbing cavity.

4. The hanging track type soundproof door according to claim 1, characterized in that, The main body of the door leaf includes, in sequence from the outside to the inside, a first sound insulation board, a damping layer, a steel frame, sound insulation cotton, a composite sound insulation module, and a second sound insulation board.

5. The hanging track type soundproof door according to claim 1, characterized in that, The soundproof door is equipped with an infrared detection component and / or a pressure detection component. The infrared detection component is used to detect whether there is an obstacle in the closing direction of the soundproof door through infrared signals. The pressure detection component includes an airbag and a pressure sensor located inside the airbag. The pressure sensor is used to detect the air pressure change of the airbag to determine whether the airbag has touched an obstacle.

6. An aircraft engine test system, comprising an assembly workshop and a testing workshop, characterized in that, The aero-engine test system also includes a suspended rail silencing door as described in any one of claims 1 to 5, wherein the suspended rail silencing door is located between the assembly workshop and the test workshop.

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