Aero-engine test preloading device and preloading method

Abstract

The application discloses an aero-engine test running preloading device and a preloading method, which comprises a frame body for supporting the preloading device, a mounting mechanism mounted on the frame body, a detachable mounting seat provided with a mounting structure matched with a rack of a test running table at the bottom of the mounting seat, and the mounting seat is used for mounting an engine, an adjusting assembly mounted on the mounting mechanism and used for adjusting the position of the mounting seat and then adjusting the position of the engine mounted on the mounting seat, and a centering mechanism used for centering calibration of the engine when or after the position of the mounting seat is adjusted. By using the preloading device, one group of operators can operate the test running process, and another group of operators can preload the engine for the next time on the preloading device. After the test running of one time, the engine preloaded for the next time is transferred and mounted on the test running table, the mounting time of each engine on the test running table is shortened, and the work efficiency of the test running process is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine test running, in particular to an aero-engine test running pre-assembly device. In addition, the present application also relates to a pre-assembly method comprising the aero-engine test running pre-assembly device. BACKGROUND

[0002] The aero-engine dynamometer is an important measurement component of the aero-engine test bed. When the aero-engine is installed on the test bed, it needs to be connected with the dynamometer. The dynamometer is fixedly installed when the test bed is built. Therefore, each aero-engine must go through a test running installation process before being tested on the test bed. The operator needs to adjust the level and centering of the engine during the test running installation process, so as to ensure that the aero-engine and the dynamometer can be accurately connected.

[0003] The test running installation of the aero-engine mainly includes the following steps: first, the engine and the mounting seat are lifted to the test bed rack by a crane; then, the mounting seat is installed on the rack; then, the mounting seats are adjusted in sequence to make the round runout and end face runout of the mounting stop of the aero-engine meet the predetermined test running installation parameters; finally, the test running installation is completed by connecting the dynamometer.

[0004] The current test running method is to directly adjust the position on the engine mounting seat of the test bed to realize the docking of the aero-engine and the dynamometer, and then start the test running process. According to the operation process in the prior art, at least the following disadvantages exist:

[0005] 1. The gap between the docking installation ports of the dynamometer is small, and the installation is difficult. Some aero-engine mounting joints are universal joint structures. After the engine mounting seat is connected to the mounting joint, the mounting seat will tilt due to its own weight, and the relative positions of the four mounting seats will be randomly misaligned. Therefore, the workload of the engine during the test running installation on the test bed is very large, and the test running personnel need to spend a lot of manpower to complete the test running installation of the engine, which greatly restricts the work efficiency of the engine test running;

[0006] 2. Each engine occupies a long installation time on the test bed, and the entire test bed staff needs to wait for the engine installation to be completed before continuing the subsequent process, which wastes a lot of working time and leads to low work efficiency of the test bed. SUMMARY

[0007] The present application provides an aero-engine test running pre-assembly device and a pre-assembly method to solve the technical problem of low work efficiency caused by large installation adjustment workload and long test bed occupation time in the prior art.

[0008] The technical scheme adopted by the present application is as follows: an aero-engine test running pre-assembly device, comprising:

[0009] a frame body for supporting the pre-assembly device;

[0010] a mounting mechanism mounted on the frame body, comprising a detachable mounting seat for mounting an engine, a mounting structure is arranged at the bottom of the mounting seat, and the mounting structure of the mounting seat is matched with a mounting structure of a testbed of the testbed;

[0011] an adjusting assembly mounted on the mounting mechanism, for adjusting the position of the mounting seat and the position of the engine mounted on the mounting seat;

[0012] a centering mechanism for centering the engine when the position of the mounting seat is adjusted or after the adjustment.

[0013] As a preferred mode, the mounting mechanism comprises a first support seat and a second support seat; the first support seat movably connects a first mounting seat, and the first mounting seat is used for mounting a front mounting leg of the engine; the second support seat movably connects a second mounting seat, and the second mounting seat is used for mounting a rear mounting leg of the engine.

[0014] As a preferred mode, the adjusting assembly comprises a universal joint mounted on the first mounting seat and / or the second mounting seat, and the universal joint is used for connecting the front mounting leg or the rear mounting leg of the engine.

[0015] As a preferred mode, the adjusting assembly comprises a mounting block movably arranged on the first mounting seat and / or the second mounting seat relative to the vertical direction of the surface of the first support seat, the bottom of the mounting block is a first inclined surface structure, the bottom of the mounting block is provided with a sliding block, the top of the sliding block is a second inclined surface structure matched with the slope of the first inclined surface structure; and the adjusting assembly further comprises an adjusting member for driving the sliding block to move horizontally along the direction in which the slope of the first inclined surface structure changes relative to the surface of the first support seat.

[0016] As a preferred mode, the adjusting assembly comprises a strip-shaped sliding rail, and the first support seat and the second support seat are provided with mounting grooves for mounting the strip-shaped sliding rail.

[0017] The bottom of the first mounting seat and the bottom of the second mounting seat are provided with sliding grooves matched with the sliding rail; or the strip-shaped sliding rail is formed on the bottom of the first mounting seat and the bottom of the second mounting seat.

[0018] As a preferred mode, the adjusting assembly further comprises a safety mechanism for preventing the mounting seat from moving and / or being misaligned when the engine is mounted on the mounting seat.

[0019] As a preferred mode, the pre-assembly device comprises a first set of oppositely arranged support seats and a second set of oppositely arranged support seats; the safety mechanism comprises a guide rod, a fixed plate and a locking member, the guide rod is arranged through the first end of the fixed plate; the first end of the fixed plate is in sliding connection with the guide rod, the locking member is arranged on the fixed plate, and the locking member is used to limit the relative movement of the fixed plate and the guide rod; the second end of the fixed plate is provided with a clamping assembly, and the clamping assembly is clamped and locked with the first mounting seat or the second mounting seat by arranging the locking member.

[0020] As a preferred mode, the centering mechanism comprises a mounting plate and a centering shaft; the mounting plate is mounted on the frame body; the centering shaft is mounted on the mounting plate in an axially movable manner; one end of the centering shaft is provided with a positioning structure matched with the end of the rotating shaft of the engine.

[0021] As a preferred mode, the mounting plate is in L shape, comprising a longitudinal mounting plate and a transverse mounting plate, the longitudinal mounting plate is provided with a first waist-shaped hole for penetrating a screw, and the frame body is provided with a threaded hole corresponding to the position of the first waist-shaped hole; the shaft mounting member is mounted with a linear bearing for penetrating the centering shaft; the two sides of the shaft mounting member are provided with mounting surfaces and are provided with second waist-shaped holes for penetrating bolts, and the transverse mounting plate is provided with threaded holes corresponding to the positions of the second waist-shaped holes.

[0022] According to another aspect of the present application, an aero-engine test pre-assembly method is also provided, which applies the pre-assembly device described above, and comprises the following steps:

[0023] S1. hoisting the engine on the mounting mechanism, and connecting the mounting feet of the engine with the mounting seats;

[0024] S2. adjusting the mounting mechanism by the adjusting assembly to make the rotating shaft of the engine correspond to the axial position of the centering mechanism;

[0025] S3. transferring the engine together with the mounting seats to the test bench.

[0026] The present application has the following beneficial effects: the shaft center position of the centering mechanism is adjusted to correspond to the shaft center position of the connecting structure of the dynamometer on the test bench according to the size parameters of the target engine; the aero-engine is installed on the mounting mechanism and the mounting feet are connected with the mounting seats, the positions of the mounting seats relative to the frame body are adjusted through the adjusting assembly to adjust the position of the engine to correspond to the shaft center position of the centering mechanism, and the pre-installation of the target engine on the pre-installation device is completed; based on the above working principle, after the position of the target engine is adjusted on the pre-installation device, the target engine is transported to the test bench together with the mounting seat connected to the target engine and having the adjusted position after the test of the previous engine is completed, the mounting seat is connected with the rack of the test bench, and then the rotating shaft of the engine is connected with the dynamometer to complete the test installation, without the need to adjust the position of the engine again; through the use of the pre-installation device, one group of operators can operate the test process, and another group of operators can pre-install the engine of the next time on the pre-installation device, so that the engine of the next time is transported and installed on the test bench after the test of the engine of the first time, the installation time of each engine on the test bench is shortened, and the work efficiency of the test process is significantly improved.

[0027] In addition to the objects, features, and advantages described above, the present application has other objects, features, and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate embodiments of the application and assist in explaining the application. In the drawings:

[0029] Figure 1 is a schematic diagram of the installation of the engine on the test bench;

[0030] Figure 2 is a schematic diagram of the structure of the preferred embodiment of the present application;

[0031] Figure 3 is a schematic diagram of part of the structure of the preferred embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the centering mechanism structure of the preferred embodiment of the present application;

[0033] Figure 5 is a partial sectional view of the centering mechanism of the preferred embodiment of the present application;

[0034] Figure 6 is a partial sectional view of the mounting seat from the front view of the preferred embodiment of the present application;

[0035] Figure 7 is a partial sectional view of the mounting seat from the side view of the preferred embodiment of the present application;

[0036] Figure 8 Figure 1 is a schematic diagram of an insurance mechanism structure according to a preferred embodiment of the present application.

[0037] 1, frame 11, directional wheel 12, universal wheel 13, push handle 21, first mounting seat 22, second mounting seat 31, first support seat 32, second support seat 41, universal joint 42, mounting block 43, sliding block 44, adjusting screw 45, strip-shaped sliding rail 46, mounting groove 5, centering mechanism 51, centering shaft 511, annular protrusion 52, longitudinal mounting plate 521, first waist-shaped hole 53, transverse mounting plate 54, reinforcing plate 55, shaft mounting 56, linear bearing 6, insurance mechanism 61, guide rod 611, platform surface 62, fixed plate 621, clamping assembly 63, locking member 7, engine 8, dynamometer 9, test bed DETAILED DESCRIPTION

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] With reference to Figures 1 to 8 , the preferred embodiment of the present application provides an aviation engine test pre-assembly device, comprising:

[0040] a frame 1 for supporting the pre-assembly device; as the basic platform of the device, the height of the frame is basically consistent with the height of the test bed 9 in the prior art, and directional wheels 11 and universal wheels 12 are arranged at the bottom corners of the frame 1, respectively, and the frame 1 is provided with a push handle 13, thereby facilitating the overall movement of the device;

[0041] a mounting mechanism mounted on the frame 1, comprising a detachable mounting seat, the bottom of the mounting seat is provided with a mounting structure matched with the frame of the test bed 9, and the mounting seat is used for mounting the engine;

[0042] an adjusting assembly mounted on the mounting mechanism, used for adjusting the position of the engine mounted on the mounting mechanism;

[0043] a centering mechanism 5 used for centering calibration of the engine when adjusting the position of the mounting seat or after adjustment;

[0044] The working principle of the pre-assembly device is as follows: the centering mechanism 5 is adjusted according to the size parameters of the target engine, and the centering position of the centering mechanism 5 corresponds to the centering position of the connecting structure of the dynamometer 8 on the test bed 9; the aviation engine is mounted on the mounting mechanism and connected with the mounting seat through the mounting feet, and the position of each mounting seat relative to the frame 1 is adjusted through the adjusting assembly, thereby adjusting the position of the engine to correspond to the centering position of the centering mechanism 5, and completing the pre-assembly of the target engine on the pre-assembly device;

[0045] It can be understood that, based on the above working principle, after the installation position of the target engine is adjusted by the pre-installation device, the target engine can be transported to the test bench 9 together with the mounting seat connected to the target engine and having been adjusted in position after the test of the previous engine 7 is completed, the mounting seat is connected with the rack of the test bench 9, and then the rotating shaft of the engine 7 is connected with the dynamometer 8, thereby completing the test installation without adjusting the position of the engine 7 again; by using the pre-installation device, one group of operators can perform the test process operation, and another group of workers can perform the pre-installation of the engine of the next time in the pre-installation device; after the test of the engine 7 of the previous time is completed, the engine pre-installed for the next time can be transported and installed to the test bench 9, thereby shortening the installation time of each engine 7 on the test bench 9 and significantly improving the work efficiency of the test process.

[0046] It should be understood that the centering mechanism 5 includes a mounting plate and a centering shaft 51; the mounting plate is installed on the rack body 1; the centering shaft 51 is axially movable and installed on the mounting plate; one end of the centering shaft 51 is provided with a positioning structure matched with the end of the rotating shaft of the engine; the shaft center position of each type of engine with different size specifications may be different after installation, and therefore the installation position of the dynamometer 8 is different, and the corresponding installation position of the centering shaft 51 is also different; after the position of the centering shaft 51 is adjusted according to the foregoing working principle, the installation position parameters of the centering shaft 51 of the corresponding engine type are recorded, and the position adjustment and installation of the centering shaft 51 are performed according to the parameters in the future;

[0047] The mounting plate is inverted L-shaped, which has a longitudinal mounting plate 52 and a transverse mounting plate 53 connected to one side edge of the longitudinal mounting plate 52, and a reinforcing plate 54 or a reinforcing rib is arranged between the two to support; the surface of the longitudinal mounting plate 52 is provided with a first waist-shaped hole 521 for screwing, and the length direction is arranged along the longitudinal direction, and a plurality of first waist-shaped holes 521 are uniformly distributed on the longitudinal mounting plate 52; the first screw hole is arranged at the position corresponding to the first waist-shaped hole 521 of the frame body 1, and the longitudinal mounting plate 52 is locked after the mounting height is adjusted; the shaft mounting piece 55 is arranged on the transverse mounting plate 53, the linear bearing 56 for inserting the centering shaft 51 is arranged on the shaft mounting piece 55, so that the centering shaft 51 can axially slide, preferably two shaft mounting pieces 55 are arranged, which are matched with the length of the centering shaft 51, and can be radially limited and supported; the two sides of the shaft mounting piece 55 have a mounting surface and are provided with a second waist-shaped hole for inserting a bolt, and the length direction of the second waist-shaped hole is perpendicular to the axis direction of the shaft mounting piece 55; the second screw hole is arranged at the position corresponding to the second waist-shaped hole of the transverse mounting plate 53; that is, the mounting height of the centering shaft 51 can be adjusted by adjusting the mounting height of the longitudinal mounting plate 52 (that is, adjusting the z-axis position), and the horizontal relative position of the shaft mounting piece 55 can be adjusted by adjusting the position of the shaft mounting piece 55 on the transverse mounting plate 53 (that is, adjusting the x-axis position), the centering shaft 51 can move axially (that is, adjusting the y-axis position, wherein the axial directions of the centering shaft 51 and the engine transmission shaft are the aforementioned y-axis direction) through the linear bearing 56 of the shaft mounting piece 55, when the centering operation is needed, the centering shaft 51 is pushed to slide towards the engine direction, the centering shaft 51 is aligned with the engine transmission shaft, that is, the centering is accurate, so as to correct the mounting position of the engine on the preloading device; after the centering is completed, the centering shaft 51 is slid away from the engine direction to be separated;

[0048] In some embodiments, the dynamometer 8 is basically kept at the center line position of the test bed 9 for height adjustment, based on which, the second waist-shaped hole can not be arranged, and the centering shaft 51 is kept at the center position of the frame body 1, and only the height position of the mounting plate needs to be adjusted to further adjust the height position of the centering shaft 51;

[0049] In the embodiment, the alignment structure of the centering shaft 51 is arranged as an annular protrusion 511 or a cylindrical protrusion matched with the internal spline of the engine transmission shaft, the outer diameter of the annular protrusion 511 and the small diameter of the internal spline have a gap of 0.02 to 0.05, so that the centering shaft 51 can be more accurately and quickly inserted into the internal environment of the engine transmission shaft to be positioned; based on this, in some embodiments, the alignment structure is arranged to be detachably connected with the centering shaft 51, and a plurality of corresponding alignment structures can be prepared according to the size parameters of the transmission shafts of different engines;

[0050] Specifically, the mounting mechanism comprises a first support base 31 and a second support base 32; the first support base 31 movably connects a first mounting seat 21, and the first mounting seat 21 is provided with mounting sections for mounting front mounting feet of the engine; similarly, the second support base 32 movably connects a second mounting seat 22, and the second mounting seat 22 is provided with mounting sections for mounting rear mounting feet of the engine; it can be understood that the positions and heights of the first support base 31 and the second support base 32 are designed according to the support bases on the rack of the existing test bench 9, so that the rack body 1 and the mounting mechanism are basically consistent with the test bench 9, and thus the engine preassembled in the preassembly device has the same relative position as on the test bench 9.

[0051] Further, the adjusting assembly comprises an installation block 42 movably arranged on the first mounting seat 21 and / or the second mounting seat 22 in the vertical direction relative to the surface of the first support base 31, the mounting sections are mounted on the installation block 42, the bottom of the installation block 42 is provided with a first inclined surface structure, the bottom of the installation block is provided with a sliding block 43, and the top of the sliding block 43 is provided with a second inclined surface structure matching the slope of the first inclined surface structure; that is, the installation block 42 and the installation block are both right-angled trapezoidal blocks, and the width of the installation block is smaller than that of the installation block 42, so that the installation block has an adjusting space; the adjusting assembly further comprises an adjusting member for driving the sliding block 43 to move horizontally along the slope change direction of the first inclined surface structure relative to the surface of the first support base 31 (relative to the surface of the working platform, the ground or other horizontal surfaces), wherein the adjusting member can be an adjusting screw 44 threadedly connected with the installation block 42, the adjusting screw 44 is arranged through the mounting seat and is axially limited, and then the mounting seat is moved along the axial direction of the adjusting screw 44 by rotating the adjusting screw 44, so that the first inclined surface structure and the second inclined surface structure are relatively slid, the contact height of the two can be changed within a certain range, and then the height of the installation block 42 is finely adjusted to adjust the height of the mounting sections;

[0052] Further, the adjusting assembly further comprises a strip-shaped sliding rail 45, and the first support base 31 and the second support base 32 are provided with mounting grooves 46 for mounting the sliding rail, and the length extension direction is consistent with the axial direction of the centering shaft 51; the mounting groove 46 is gap-fitted with the sliding rail, and the tolerance H7 is adopted; the bottom of the first mounting seat 21 and the second mounting seat 22 is provided with a sliding groove matching the sliding rail, so that the mounting seat can move forward and backward through the sliding groove to adjust the mounting position;

[0053] In some embodiments, the strip-shaped sliding rail 45 can also be formed on the bottom of the first mounting seat 21 and the bottom of the second mounting seat 22 respectively, and the sliding rail is gap-fitted with the mounting groove 46, and the two are relatively slid to adjust the mounting position of the mounting seat; based on this, the support bases of the existing test bench 9 need to be designed in the same structure as the support bases of the preassembly device.

[0054] Further, in order to facilitate the connection of the mounting section and the mounting foot of the engine, the mounting section of the embodiment adopts universal joints 41, each first mounting seat 21 and each second mounting seat 22 is respectively provided with a universal joint 41, which is used to correspondingly mount the front mounting foot or the rear mounting foot of the engine, and the universal angle can be finely adjusted in the mounting seat, which is convenient for connection with the engine;

[0055] It should be noted that, in actual application, although the use of universal joints 41 facilitates the connection of the mounting seat and the engine, it is not conducive to the fixation of the engine on the pre-assembly device. When the engine is installed, the position of the universal joint 41 may be angularly deflected or inclined, resulting in the need for re-adjustment;

[0056] Based on this, the pre-assembly device of the embodiment further comprises a safety mechanism 6 for preventing the movement and / or misplacement of the mounting seat when the engine is installed on the mounting seat;

[0057] Specifically, the pre-assembly device is provided with a set of oppositely arranged first support seats 31 and a set of oppositely arranged second support seats 32, i.e. a set of first mounting seats 21 and a set of second mounting seats 22 are correspondingly arranged, which correspond to the two front mounting feet and the two rear mounting feet of the engine. The safety mechanism 6 comprises a fixed fork assembly composed of a guide rod 61, a fixed plate 62 and a locking piece 63. The guide rod 61 is arranged through the first end of the fixed plate 62, and the first end of the fixed plate 62 is in sliding connection with the guide rod 61. Two fixed plates 62 are arranged at the two ends of the guide rod 61. The fixed plate 62 is provided with a locking piece 63 for limiting the relative movement of the fixed plate 62 and the guide rod 61. The second end of the fixed plate 62 is provided with a clamping assembly 621, which is clamped with the first mounting seat 21 or the second mounting seat 22 by arranging the locking piece 63;

[0058] The working principle of the safety mechanism 6 is as follows: by adjusting the relative positions of the two fixed plates 62 on the guide rod 61, the relative positions of the two fixed plates 62 are adapted to the relative positions of a set of first mounting seats 21 or a set of second mounting seats 22. The clamping assemblies 621 and the locking pieces 63 of the two fixed plates 62 clamp the two first mounting seats 21 or the two second mounting seats 22, respectively. Then, the locking piece 63 at the first end is locked, thereby fixing the relative positions of the fixed plate 62 and the guide rod 61. Through the fixed fork assembly, the relative positions of a set of mounting seats can be fixed. When the engine is installed, the relative positions of the set of mounting seats will not be deviated or inclined, avoiding secondary adjustment and improving efficiency. At the same time, it ensures that the adjusted position will not change when the engine is transferred from the pre-assembly device to the test bench 9;

[0059] The locking piece 63 is a quick-lock screw, i.e. a screw with a wrench / handle at the large end, which is convenient to operate. The two ends of the guide rod 61 are processed with platform surfaces 611, so that they have a plane in contact with the end of the quick-lock screw, increasing the contact surface to improve the locking effect.

[0060] In another aspect, the embodiment of the present application also provides an aero-engine test running pre-assembly method, which applies the pre-assembly device and comprises the following steps:

[0061] S1. Hoisting the engine on the mounting mechanism and connecting the mounting feet of the engine with the mounting seats;

[0062] Specifically, the mounting feet of the engine are connected with the universal joints 41; it can be understood that the mounting seats can be connected with the mounting feet of the engine before hoisting or after hoisting to the appropriate position;

[0063] S2. Adjusting the mounting mechanism by the adjusting assembly to make the shaft of the engine correspond to the axial position of the centering mechanism;

[0064] It should be understood that before the step S1 or the step S2, the axial position of the centering mechanism needs to be adjusted to be consistent with the axial position of the connecting structure of the dynamometer 8 and the shaft of the test running bed 9;

[0065] Specifically, it comprises the step S21. Adjusting the height of the mounting block 42 by moving the sliding block 43 driven by the adjusting screw 44, and then adjusting the height of each mounting foot of the engine to realize the height fine adjustment; the mounting seat is slid on the strip-shaped sliding rail 45 to realize the front and back position fine adjustment; the centering structure of the engine shaft and the centering mechanism 5 after any adjustment can be connected, and the pre-assembly is completed, at this time, the position of the engine on the pre-assembly device is the same as the relative position when it is installed on the test running bed 9;

[0066] Further, it also comprises the step S22. Adjusting the position of the fixing plate 62 on the two fixing fork assemblies and clamping and locking a set of first mounting seats 21 and a set of second mounting seats 22 respectively to prevent the universal joint 41 from being deviated or inclined under force;

[0067] S3. Transferring the engine together with the mounting seats to the test running bed 9;

[0068] It can be understood that the engine together with the mounting seats is hoisted to the support seat on the test running bed 9 by using the existing special lifting tool, each mounting seat is corresponded to the support seat, and is locked and fixed on the support seat by screws, and the test running installation of the engine is completed, without the need for further adjustment, which shortens the installation time of each engine on the test running bed 9 and significantly improves the work efficiency of the test running process.

[0069] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aeroengine test cell pre-rig apparatus for pre-positioning an assembled engine and for transferring the pre-positioned engine to a test cell, characterised in that, The utility model relates to a kind of engine test bench, including: Frame (1) for supporting; Mounting mechanism, mounted in the frame (1), the mounting mechanism includes first support seat (31), second support seat (32);The first support seat (31) is movably connected with first mounting seat (21), and the first mounting seat (21) is used to install the front mounting foot of the engine;Second support seat (32) is movably connected with second mounting seat (22), and second mounting seat (22) is used to install the rear mounting foot of the engine;The setting position and setting height of the first support seat (31), the second support seat (32) are designed to correspond to the support seat on the test bed (9) of test bed; Adjustment assembly, mounted in the mounting mechanism, for adjusting the position of mounting seat and then adjusting the position of engine mounted on the mounting seat; Centering mechanism (5) for centering calibration to the engine when adjusting the position of mounting seat or adjusting.

2. An aircraft engine test cell prepackaging device as recited in claim 1, wherein, The adjustment assembly includes a universal joint (41) mounted on the first mounting seat (21) and / or second mounting seat (22), which is used to connect with the front mounting foot or rear mounting foot of the engine.

3. The pre-assembly device for testing an aero-engine according to claim 1, characterized in that, The adjustment assembly includes an installation block (42) movably arranged on the first mounting seat (21) and / or second mounting seat (22) relative to the vertical direction of the surface of the first support seat (31), the bottom of the installation block (42) is a first inclined surface structure, the bottom of the installation block (42) is provided with a sliding block (43), the top of the sliding block (43) is a second inclined surface structure adapted to the slope of the first inclined surface structure;Further including adjusting member, for driving the sliding block (43) to move horizontally along the slope direction of the first inclined surface structure relative to the surface of the first support seat (31).

4. The pre-assembly device for testing an aero-engine according to claim 1, characterized in that, The adjustment assembly includes a strip-shaped slide rail (45), and the first support seat (31) and the second support seat (32) are provided with mounting grooves (46) for mounting the strip-shaped slide rail (45); The bottom of the first mounting seat (21) and the second mounting seat (22) is provided with a sliding groove matched with the slide rail;Or, the strip-shaped slide rail (45) is formed on the bottom of the first mounting seat (21) and the bottom of the second mounting seat (22).

5. A pre-assembly device for aero-engine test runs according to any one of claims 1-4, characterized in that, Further including safety mechanism (6) for preventing the mounting seat from moving and / or mispositioning when the engine is mounted on the mounting seat.

6. An aircraft engine test cell prepackaging apparatus as recited in claim 5, wherein, The pre-assembly device comprises a set of oppositely arranged first supporting seats (31) and a set of oppositely arranged second supporting seats (32); the safety mechanism (6) comprises a guide rod (61), a fixed plate (62) and a locking piece (63), the guide rod (61) is arranged through the first end of the fixed plate (62); the first end of the fixed plate (62) is in sliding connection with the guide rod (61), the locking piece (63) is arranged on the fixed plate (62), and the locking piece (63) is used for limiting the relative movement of the fixed plate (62) and the guide rod (61); the second end of the fixed plate (62) is provided with a clamping assembly (621), and the clamping assembly (621) is clamped and locked with the first mounting seat (21) or the second mounting seat (22) by arranging the locking piece (63).

7. An aircraft engine test cell prepackaging apparatus as recited in claim 1, wherein, The centering mechanism (5) comprises a mounting plate and a centering shaft (51); the mounting plate is mounted on the frame body (1); the centering shaft (51) is axially movably mounted on the mounting plate; one end of the centering shaft (51) is provided with a positioning structure adapted to the end of the rotating shaft of the engine.

8. An aircraft engine test cell prepackaging device as recited in claim 7, wherein, The mounting plate is L-shaped and has a longitudinal mounting plate (52) and a transverse mounting plate (53), the longitudinal mounting plate (52) is provided with a first waist-shaped hole (521) for penetrating a screw, the frame body (1) is provided with a threaded hole corresponding to the position of the first waist-shaped hole (521); the shaft mounting piece (55) is mounted with a linear bearing (56) for penetrating the centering shaft (51); the two sides of the shaft mounting piece (55) have mounting surfaces and are provided with second waist-shaped holes for penetrating bolts, and the transverse mounting plate (53) is provided with threaded holes corresponding to the positions of the second waist-shaped holes.

9. An aircraft engine test cell pre-charge method, comprising: The pre-assembly method is applied to the pre-assembly device of any one of claims 1-8, and the pre-assembly method comprises the following steps: S1. hoisting the engine on the mounting mechanism, connecting the mounting feet of the engine with the mounting seats; S2. adjusting the mounting mechanism by the adjusting assembly to make the engine rotating shaft correspond to the centering mechanism shaft center position; S3. transferring the engine together with the mounting seats to the test bed.

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